Mercurial > hg > octave-nkf

annotate libinterp/parse-tree/lex.ll @ 16361:e1dcd834751f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
and foo NUMBER as command syntax (bug #38565) * lex.ll ({NUMBER}{Im}, {D}+/\.[\*/\\^\']|{NUMBER}): Handle possible command syntax.
author John W. Eaton <jwe@octave.org>
date Sat, 23 Mar 2013 15:29:15 -0400
parents 11115c237231
children d16c255299c0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1994
c2d20f365b84 [project @ 1996-03-03 01:19:32 by jwe]
jwe
parents: 1884
diff changeset
1 /*
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
2
14138
72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
parents: 14074
diff changeset
3 Copyright (C) 1993-2012 John W. Eaton
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
4
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
5 This file is part of Octave.
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
6
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
7 Octave is free software; you can redistribute it and/or modify it
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
8 under the terms of the GNU General Public License as published by the
7016
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6547
diff changeset
9 Free Software Foundation; either version 3 of the License, or (at your
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6547
diff changeset
10 option) any later version.
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
11
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
12 Octave is distributed in the hope that it will be useful, but WITHOUT
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
15 for more details.
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
16
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
17 You should have received a copy of the GNU General Public License
7016
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6547
diff changeset
18 along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6547
diff changeset
19 <http://www.gnu.org/licenses/>.
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
20
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
21 */
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
22
16150
891a2a4df71f * lex.ll: Use C-style comments in preamble.
John W. Eaton <jwe@octave.org>
parents: 16149
diff changeset
23 /*
891a2a4df71f * lex.ll: Use C-style comments in preamble.
John W. Eaton <jwe@octave.org>
parents: 16149
diff changeset
24 We are using the pure parser interface and the reentrant lexer
891a2a4df71f * lex.ll: Use C-style comments in preamble.
John W. Eaton <jwe@octave.org>
parents: 16149
diff changeset
25 interface but the Octave parser and lexer are NOT properly
891a2a4df71f * lex.ll: Use C-style comments in preamble.
John W. Eaton <jwe@octave.org>
parents: 16149
diff changeset
26 reentrant because both still use many global variables. It should be
891a2a4df71f * lex.ll: Use C-style comments in preamble.
John W. Eaton <jwe@octave.org>
parents: 16149
diff changeset
27 safe to create a parser object and call it while anotehr parser
891a2a4df71f * lex.ll: Use C-style comments in preamble.
John W. Eaton <jwe@octave.org>
parents: 16149
diff changeset
28 object is active (to parse a callback function while the main
891a2a4df71f * lex.ll: Use C-style comments in preamble.
John W. Eaton <jwe@octave.org>
parents: 16149
diff changeset
29 interactive parser is waiting for input, for example) if you take
891a2a4df71f * lex.ll: Use C-style comments in preamble.
John W. Eaton <jwe@octave.org>
parents: 16149
diff changeset
30 care to properly save and restore (typically with an unwind_protect
891a2a4df71f * lex.ll: Use C-style comments in preamble.
John W. Eaton <jwe@octave.org>
parents: 16149
diff changeset
31 object) relevant global values before and after the nested call.
891a2a4df71f * lex.ll: Use C-style comments in preamble.
John W. Eaton <jwe@octave.org>
parents: 16149
diff changeset
32 */
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
33
4753
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe]
jwe
parents: 4678
diff changeset
34 %option prefix = "octave_"
16146
b6050fc0a2d9 use %option noyywrap
John W. Eaton <jwe@octave.org>
parents: 16139
diff changeset
35 %option noyywrap
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
36 %option reentrant
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
37 %option bison-bridge
4753
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe]
jwe
parents: 4678
diff changeset
38
10019
7ad32bf759c3 lex.cc: Use %top block to include config.h
John W. Eaton <jwe@octave.org>
parents: 9794
diff changeset
39 %top {
7ad32bf759c3 lex.cc: Use %top block to include config.h
John W. Eaton <jwe@octave.org>
parents: 9794
diff changeset
40 #ifdef HAVE_CONFIG_H
7ad32bf759c3 lex.cc: Use %top block to include config.h
John W. Eaton <jwe@octave.org>
parents: 9794
diff changeset
41 #include <config.h>
7ad32bf759c3 lex.cc: Use %top block to include config.h
John W. Eaton <jwe@octave.org>
parents: 9794
diff changeset
42 #endif
10411
479cc8a0a846 use gnulib namespace
John W. Eaton <jwe@octave.org>
parents: 10315
diff changeset
43
10019
7ad32bf759c3 lex.cc: Use %top block to include config.h
John W. Eaton <jwe@octave.org>
parents: 9794
diff changeset
44 }
7ad32bf759c3 lex.cc: Use %top block to include config.h
John W. Eaton <jwe@octave.org>
parents: 9794
diff changeset
45
4208
e96f52432059 [project @ 2002-12-03 19:48:57 by jwe]
jwe
parents: 4198
diff changeset
46 %s COMMAND_START
e96f52432059 [project @ 2002-12-03 19:48:57 by jwe]
jwe
parents: 4198
diff changeset
47 %s MATRIX_START
4240
8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe]
jwe
parents: 4238
diff changeset
48
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
49 %x INPUT_FILE_START
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
50
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
51 %x BLOCK_COMMENT_START
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
52 %x LINE_COMMENT_START
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
53
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
54 %{
240
a99f28f5e351 [project @ 1993-11-30 20:24:36 by jwe]
jwe
parents: 216
diff changeset
55
1341
e4e4131b1648 [project @ 1995-09-04 00:13:33 by jwe]
jwe
parents: 1315
diff changeset
56 #include <cctype>
e4e4131b1648 [project @ 1995-09-04 00:13:33 by jwe]
jwe
parents: 1315
diff changeset
57 #include <cstring>
e4e4131b1648 [project @ 1995-09-04 00:13:33 by jwe]
jwe
parents: 1315
diff changeset
58
8950
d865363208d6 include <iosfwd> instead of <iostream> in header files
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
59 #include <iostream>
8001
ff9e7873f8ea improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents: 7898
diff changeset
60 #include <set>
5765
7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe]
jwe
parents: 5615
diff changeset
61 #include <sstream>
1823
5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe]
jwe
parents: 1755
diff changeset
62 #include <string>
4214
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe]
jwe
parents: 4208
diff changeset
63 #include <stack>
1823
5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe]
jwe
parents: 1755
diff changeset
64
4093
5a82e874999b [project @ 2002-10-08 23:48:45 by jwe]
jwe
parents: 4064
diff changeset
65 #include <sys/types.h>
5a82e874999b [project @ 2002-10-08 23:48:45 by jwe]
jwe
parents: 4064
diff changeset
66 #include <unistd.h>
5a82e874999b [project @ 2002-10-08 23:48:45 by jwe]
jwe
parents: 4064
diff changeset
67
2926
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2900
diff changeset
68 #include "cmd-edit.h"
4153
6b96ce9f5743 [project @ 2002-11-06 20:38:49 by jwe]
jwe
parents: 4131
diff changeset
69 #include "quit.h"
4910
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe]
jwe
parents: 4867
diff changeset
70 #include "lo-mappers.h"
2926
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2900
diff changeset
71
16154
aa5e1e8dce66 * lex.ll: Change y.tab.h to oct-parse.h in comment.
John W. Eaton <jwe@octave.org>
parents: 16150
diff changeset
72 // These would be alphabetical, but oct-parse.h must be included before
aa5e1e8dce66 * lex.ll: Change y.tab.h to oct-parse.h in comment.
John W. Eaton <jwe@octave.org>
parents: 16150
diff changeset
73 // oct-gperf.h and oct-parse.h must be included after token.h and the tree
aa5e1e8dce66 * lex.ll: Change y.tab.h to oct-parse.h in comment.
John W. Eaton <jwe@octave.org>
parents: 16150
diff changeset
74 // class declarations. We can't include oct-parse.h in oct-gperf.h
1497
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe]
jwe
parents: 1489
diff changeset
75 // because it may not be protected to allow it to be included multiple
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe]
jwe
parents: 1489
diff changeset
76 // times.
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe]
jwe
parents: 1489
diff changeset
77
4264
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe]
jwe
parents: 4248
diff changeset
78 #include "Cell.h"
3665
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe]
jwe
parents: 3598
diff changeset
79 #include "comment-list.h"
2181
138b3c98dc85 [project @ 1996-05-13 18:02:31 by jwe]
jwe
parents: 2167
diff changeset
80 #include "defun.h"
1355
94697d007075 [project @ 1995-09-05 20:04:15 by jwe]
jwe
parents: 1351
diff changeset
81 #include "error.h"
4910
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe]
jwe
parents: 4867
diff changeset
82 #include "gripes.h"
1351
8256c4c57419 [project @ 1995-09-05 08:02:08 by jwe]
jwe
parents: 1341
diff changeset
83 #include "input.h"
1355
94697d007075 [project @ 1995-09-05 20:04:15 by jwe]
jwe
parents: 1351
diff changeset
84 #include "lex.h"
2891
1a30f46e1870 [project @ 1997-04-28 01:49:00 by jwe]
jwe
parents: 2877
diff changeset
85 #include "ov.h"
1355
94697d007075 [project @ 1995-09-05 20:04:15 by jwe]
jwe
parents: 1351
diff changeset
86 #include "parse.h"
2987
ae20b3f37f5e [project @ 1997-05-16 07:05:15 by jwe]
jwe
parents: 2982
diff changeset
87 #include "pt-all.h"
2891
1a30f46e1870 [project @ 1997-04-28 01:49:00 by jwe]
jwe
parents: 2877
diff changeset
88 #include "symtab.h"
1a30f46e1870 [project @ 1997-04-28 01:49:00 by jwe]
jwe
parents: 2877
diff changeset
89 #include "token.h"
1a30f46e1870 [project @ 1997-04-28 01:49:00 by jwe]
jwe
parents: 2877
diff changeset
90 #include "toplev.h"
1355
94697d007075 [project @ 1995-09-05 20:04:15 by jwe]
jwe
parents: 1351
diff changeset
91 #include "utils.h"
94697d007075 [project @ 1995-09-05 20:04:15 by jwe]
jwe
parents: 1351
diff changeset
92 #include "variables.h"
9794
0d4613a736e9 convert build system to use automake and libtool
John W. Eaton <jwe@octave.org>
parents: 9476
diff changeset
93 #include <oct-parse.h>
2492
06595bc7f2d0 [project @ 1996-11-09 00:13:50 by jwe]
jwe
parents: 2375
diff changeset
94 #include <oct-gperf.h>
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
95
10426
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace
John W. Eaton <jwe@octave.org>
parents: 10411
diff changeset
96 #if defined (GNULIB_NAMESPACE)
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace
John W. Eaton <jwe@octave.org>
parents: 10411
diff changeset
97 // Calls to the following functions appear in the generated output from
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace
John W. Eaton <jwe@octave.org>
parents: 10411
diff changeset
98 // flex without the namespace tag. Redefine them so we will use them
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace
John W. Eaton <jwe@octave.org>
parents: 10411
diff changeset
99 // via the gnulib namespace.
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace
John W. Eaton <jwe@octave.org>
parents: 10411
diff changeset
100 #define fprintf GNULIB_NAMESPACE::fprintf
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace
John W. Eaton <jwe@octave.org>
parents: 10411
diff changeset
101 #define fwrite GNULIB_NAMESPACE::fwrite
14161
f4b5a2f899d3 check in change accidentally omitted from previuos changeset
John W. Eaton <jwe@octave.org>
parents: 14138
diff changeset
102 #define isatty GNULIB_NAMESPACE::isatty
10426
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace
John W. Eaton <jwe@octave.org>
parents: 10411
diff changeset
103 #define malloc GNULIB_NAMESPACE::malloc
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace
John W. Eaton <jwe@octave.org>
parents: 10411
diff changeset
104 #define realloc GNULIB_NAMESPACE::realloc
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace
John W. Eaton <jwe@octave.org>
parents: 10411
diff changeset
105 #endif
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace
John W. Eaton <jwe@octave.org>
parents: 10411
diff changeset
106
2716
2b5c27299cde [project @ 1997-02-22 08:40:55 by jwe]
jwe
parents: 2702
diff changeset
107 #if ! (defined (FLEX_SCANNER) \
2b5c27299cde [project @ 1997-02-22 08:40:55 by jwe]
jwe
parents: 2702
diff changeset
108 && defined (YY_FLEX_MAJOR_VERSION) && YY_FLEX_MAJOR_VERSION >= 2 \
2b5c27299cde [project @ 1997-02-22 08:40:55 by jwe]
jwe
parents: 2702
diff changeset
109 && defined (YY_FLEX_MINOR_VERSION) && YY_FLEX_MINOR_VERSION >= 5)
2b5c27299cde [project @ 1997-02-22 08:40:55 by jwe]
jwe
parents: 2702
diff changeset
110 #error lex.l requires flex version 2.5.4 or later
2b5c27299cde [project @ 1997-02-22 08:40:55 by jwe]
jwe
parents: 2702
diff changeset
111 #endif
2b5c27299cde [project @ 1997-02-22 08:40:55 by jwe]
jwe
parents: 2702
diff changeset
112
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
113 #define YY_EXTRA_TYPE octave_base_lexer *
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
114 #define curr_lexer yyextra
4753
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe]
jwe
parents: 4678
diff changeset
115
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe]
jwe
parents: 4678
diff changeset
116 // Arrange to get input via readline.
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe]
jwe
parents: 4678
diff changeset
117
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe]
jwe
parents: 4678
diff changeset
118 #ifdef YY_INPUT
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe]
jwe
parents: 4678
diff changeset
119 #undef YY_INPUT
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe]
jwe
parents: 4678
diff changeset
120 #endif
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe]
jwe
parents: 4678
diff changeset
121 #define YY_INPUT(buf, result, max_size) \
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
122 result = curr_lexer->fill_flex_buffer (buf, max_size)
4753
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe]
jwe
parents: 4678
diff changeset
123
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe]
jwe
parents: 4678
diff changeset
124 // Try to avoid crashing out completely on fatal scanner errors.
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe]
jwe
parents: 4678
diff changeset
125
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe]
jwe
parents: 4678
diff changeset
126 #ifdef YY_FATAL_ERROR
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe]
jwe
parents: 4678
diff changeset
127 #undef YY_FATAL_ERROR
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe]
jwe
parents: 4678
diff changeset
128 #endif
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe]
jwe
parents: 4678
diff changeset
129 #define YY_FATAL_ERROR(msg) \
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
130 (yyget_extra (yyscanner))->fatal_error (msg)
4753
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe]
jwe
parents: 4678
diff changeset
131
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
132 #define CMD_OR_OP(PATTERN, TOK, COMPAT) \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
133 \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
134 do \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
135 { \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
136 curr_lexer->lexer_debug (PATTERN); \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
137 \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
138 if (curr_lexer->looks_like_command_arg ()) \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
139 { \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
140 yyless (0); \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
141 curr_lexer->push_start_state (COMMAND_START); \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
142 } \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
143 else \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
144 { \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
145 return curr_lexer->handle_op_internal (TOK, false, COMPAT); \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
146 } \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
147 } \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
148 while (0)
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
149
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
150 #define CMD_OR_UNARY_OP(PATTERN, TOK, COMPAT) \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
151 \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
152 do \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
153 { \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
154 curr_lexer->lexer_debug (PATTERN); \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
155 \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
156 if (curr_lexer->looks_like_command_arg ()) \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
157 { \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
158 yyless (0); \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
159 curr_lexer->push_start_state (COMMAND_START); \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
160 } \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
161 else \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
162 { \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
163 int tok \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
164 = (COMPAT \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
165 ? curr_lexer->handle_unary_op (TOK) \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
166 : curr_lexer->handle_incompatible_unary_op (TOK)); \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
167 \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
168 if (tok < 0) \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
169 { \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
170 yyless (0); \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
171 curr_lexer->xunput (','); \
16281
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
172 /* Adjust for comma that was not really in the input stream. */ \
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
173 curr_lexer->current_input_column--; \
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
174 } \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
175 else \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
176 { \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
177 return tok; \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
178 } \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
179 } \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
180 } \
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
181 while (0)
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
182
7722
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents: 7720
diff changeset
183 static bool Vdisplay_tokens = false;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents: 7720
diff changeset
184
4910
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe]
jwe
parents: 4867
diff changeset
185 static unsigned int Vtoken_count = 0;
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe]
jwe
parents: 4867
diff changeset
186
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
187 // Internal variable for lexer debugging state.
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
188 static bool lexer_debug_flag = false;
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
189
146
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
190 // Forward declarations for functions defined at the bottom of this
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
191 // file that are needed inside the lexer actions.
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
192
3523
b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe]
jwe
parents: 3503
diff changeset
193 static std::string strip_trailing_whitespace (char *s);
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
194
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
195 %}
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
196
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
197 D [0-9]
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
198 S [ \t]
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
199 NL ((\n)|(\r)|(\r\n))
16261
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
200 CONT ((\.\.\.)|(\\))
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
201 Im [iIjJ]
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
202 CCHAR [#%]
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
203 IDENT ([_$a-zA-Z][_$a-zA-Z0-9]*)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
204 EXPON ([DdEe][+-]?{D}+)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
205 NUMBER (({D}+\.?{D}*{EXPON}?)|(\.{D}+{EXPON}?)|(0[xX][0-9a-fA-F]+))
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
206
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
207 ANY_INCLUDING_NL (.|{NL})
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
208
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
209 %%
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
210
9474
25ed2d6aacf6 Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents: 9324
diff changeset
211 %{
25ed2d6aacf6 Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents: 9324
diff changeset
212 // Make script and function files start with a bogus token. This makes
25ed2d6aacf6 Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents: 9324
diff changeset
213 // the parser go down a special path.
25ed2d6aacf6 Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents: 9324
diff changeset
214 %}
25ed2d6aacf6 Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents: 9324
diff changeset
215
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
216 <INPUT_FILE_START>{ANY_INCLUDING_NL} {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
217 curr_lexer->lexer_debug ("<INPUT_FILE_START>{ANY_INCLUDING_NL}");
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
218
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
219 curr_lexer->xunput (yytext[0]);
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
220
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
221 // May be reset later if we see "function" or "classdef" appears
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
222 // as the first token.
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
223 curr_lexer->reading_script_file = true;
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
224
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
225 curr_lexer->pop_start_state ();
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
226
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
227 return curr_lexer->show_token (INPUT_FILE);
4238
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe]
jwe
parents: 4237
diff changeset
228 }
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe]
jwe
parents: 4237
diff changeset
229
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
230 %{
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
231 // Help and other command-style functions.
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
232 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
233
4208
e96f52432059 [project @ 2002-12-03 19:48:57 by jwe]
jwe
parents: 4198
diff changeset
234 <COMMAND_START>{NL} {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
235 curr_lexer->lexer_debug ("<COMMAND_START>{NL}");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
236
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
237 curr_lexer->input_line_number++;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
238 curr_lexer->current_input_column = 1;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
239
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
240 curr_lexer->looking_for_object_index = false;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
241 curr_lexer->at_beginning_of_statement = true;
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
242
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
243 curr_lexer->pop_start_state ();
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
244
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
245 return curr_lexer->count_token ('\n');
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
246 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
247
4208
e96f52432059 [project @ 2002-12-03 19:48:57 by jwe]
jwe
parents: 4198
diff changeset
248 <COMMAND_START>[\;\,] {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
249 curr_lexer->lexer_debug ("<COMMAND_START>[\\;\\,]");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
250
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
251 curr_lexer->looking_for_object_index = false;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
252 curr_lexer->at_beginning_of_statement = true;
5102
b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe]
jwe
parents: 5088
diff changeset
253
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
254 curr_lexer->pop_start_state ();
5102
b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe]
jwe
parents: 5088
diff changeset
255
b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe]
jwe
parents: 5088
diff changeset
256 if (strcmp (yytext, ",") == 0)
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
257 return curr_lexer->handle_token (',');
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
258 else
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
259 return curr_lexer->handle_token (';');
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
260 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
261
4208
e96f52432059 [project @ 2002-12-03 19:48:57 by jwe]
jwe
parents: 4198
diff changeset
262 <COMMAND_START>[\"\'] {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
263 curr_lexer->lexer_debug ("<COMMAND_START>[\\\"\\']");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
264
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
265 curr_lexer->at_beginning_of_statement = false;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
266
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
267 curr_lexer->current_input_column++;
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
268 int tok = curr_lexer->handle_string (yytext[0]);
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
269
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
270 return curr_lexer->count_token_internal (tok);
975
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe]
jwe
parents: 973
diff changeset
271 }
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe]
jwe
parents: 973
diff changeset
272
4923
b11223097ad4 [project @ 2004-08-02 16:33:11 by jwe]
jwe
parents: 4910
diff changeset
273 <COMMAND_START>[^#% \t\r\n\;\,\"\'][^ \t\r\n\;\,]*{S}* {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
274 curr_lexer->lexer_debug ("<COMMAND_START>[^#% \\t\\r\\n\\;\\,\\\"\\'][^ \\t\\r\\n\\;\\,]*{S}*");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
275
3523
b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe]
jwe
parents: 3503
diff changeset
276 std::string tok = strip_trailing_whitespace (yytext);
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
277
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
278 curr_lexer->looking_for_object_index = false;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
279 curr_lexer->at_beginning_of_statement = false;
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
280
16231
2b15ae55c721 put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents: 16230
diff changeset
281 return curr_lexer->handle_token (tok, SQ_STRING);
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
282 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
283
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
284 <MATRIX_START>{S}* {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
285 curr_lexer->lexer_debug ("<MATRIX_START>{S}*");
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
286
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
287 curr_lexer->mark_previous_token_trailing_space ();
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
288 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
289
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
290 <MATRIX_START>{NL} {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
291 curr_lexer->lexer_debug ("<MATRIX_START>{NL}");
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
292
16281
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
293 curr_lexer->input_line_number++;
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
294 curr_lexer->current_input_column = 1;
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
295
16267
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
296 if (curr_lexer->nesting_level.is_paren ())
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
297 curr_lexer->gripe_matlab_incompatible ("bare newline inside parentheses");
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
298 else
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
299 {
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
300 int tok = curr_lexer->previous_token_value ();
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
301
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
302 if (! (tok == ';' || tok == '[' || tok == '{'))
16281
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
303 {
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
304 curr_lexer->xunput (';');
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
305 // Adjust for semicolon that was not really in the input stream.
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
306 curr_lexer->current_input_column--;
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
307 }
16267
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
308 }
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
309 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
310
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
311 %{
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
312 // For this and the next two rules, we're looking at ']', and we
15466
d174210ce1ec use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents: 14161
diff changeset
313 // need to know if the next token is '=' or '=='.
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
314 //
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
315 // It would have been so much easier if the delimiters were simply
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
316 // different for the expression on the left hand side of the equals
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
317 // operator.
971
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
318 //
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
319 // It's also a pain in the ass to decide whether to insert a comma
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
320 // after seeing a ']' character...
7723
74f5e0c7de9e first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents: 7722
diff changeset
321
74f5e0c7de9e first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents: 7722
diff changeset
322 // FIXME -- we need to handle block comments here.
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
323 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
324
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
325 <MATRIX_START>\] {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
326 curr_lexer->lexer_debug ("<MATRIX_START>\\]");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
327
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
328 curr_lexer->looking_at_object_index.pop_front ();
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
329
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
330 curr_lexer->looking_for_object_index = true;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
331 curr_lexer->at_beginning_of_statement = false;
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
332
16299
c40a8873c2e7 eliminate some unused variables
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
333 curr_lexer->handle_close_bracket (']');
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
334
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
335 return curr_lexer->count_token (']');
4608
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe]
jwe
parents: 4476
diff changeset
336 }
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe]
jwe
parents: 4476
diff changeset
337
7723
74f5e0c7de9e first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents: 7722
diff changeset
338 %{
74f5e0c7de9e first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents: 7722
diff changeset
339 // FIXME -- we need to handle block comments here.
74f5e0c7de9e first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents: 7722
diff changeset
340 %}
74f5e0c7de9e first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents: 7722
diff changeset
341
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
342 <MATRIX_START>\} {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
343 curr_lexer->lexer_debug ("<MATRIX_START>\\}*");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
344
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
345 curr_lexer->looking_at_object_index.pop_front ();
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
346
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
347 curr_lexer->looking_for_object_index = true;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
348 curr_lexer->at_beginning_of_statement = false;
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
349
16299
c40a8873c2e7 eliminate some unused variables
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
350 curr_lexer->handle_close_bracket ('}');
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
351
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
352 return curr_lexer->count_token ('}');
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
353 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
354
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
355 \[ {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
356 curr_lexer->lexer_debug ("\\[");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
357
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
358 bool unput_comma = false;
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
359
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
360 if (curr_lexer->whitespace_is_significant ()
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
361 && curr_lexer->space_follows_previous_token ())
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
362 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
363 int tok = curr_lexer->previous_token_value ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
364
16267
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
365 if (! (tok == '[' || tok == '{'
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
366 || curr_lexer->previous_token_is_binop ()))
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
367 unput_comma = true;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
368 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
369
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
370 if (unput_comma)
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
371 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
372 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
373 curr_lexer->xunput (',');
16281
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
374 // Adjust for comma that was not really in the input stream.
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
375 curr_lexer->current_input_column--;
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
376 }
5615
d01f07aeaec5 [project @ 2006-02-10 21:30:41 by jwe]
jwe
parents: 5570
diff changeset
377 else
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
378 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
379 curr_lexer->nesting_level.bracket ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
380
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
381 curr_lexer->looking_at_object_index.push_front (false);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
382
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
383 curr_lexer->current_input_column += yyleng;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
384 curr_lexer->looking_for_object_index = false;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
385 curr_lexer->at_beginning_of_statement = false;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
386
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
387 if (curr_lexer->defining_func
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
388 && ! curr_lexer->parsed_function_name.top ())
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
389 curr_lexer->looking_at_return_list = true;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
390 else
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
391 curr_lexer->looking_at_matrix_or_assign_lhs = true;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
392
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
393 curr_lexer->decrement_promptflag ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
394
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
395 curr_lexer->bracketflag++;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
396
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
397 curr_lexer->push_start_state (MATRIX_START);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
398
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
399 return curr_lexer->count_token ('[');
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
400 }
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
401 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
402
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
403 \] {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
404 curr_lexer->lexer_debug ("\\]");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
405
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
406 curr_lexer->nesting_level.remove ();
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
407
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
408 curr_lexer->looking_at_object_index.pop_front ();
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
409
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
410 curr_lexer->looking_for_object_index = true;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
411 curr_lexer->at_beginning_of_statement = false;
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
412
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
413 return curr_lexer->handle_token (']');
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
414 }
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
415
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
416 %{
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
417 // Gobble comments.
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
418 %}
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
419
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
420 %{
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
421 // Start of a block comment. If the comment marker appears immediately
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
422 // after a block of full-line comments, finish the full line comment
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
423 // block.
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
424 %}
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
425
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
426 ^{S}*{CCHAR}\{{S}*{NL} {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
427 curr_lexer->lexer_debug ("^{S}*{CCHAR}\{{S}*{NL}");
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
428
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
429 yyless (0);
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
430
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
431 if (curr_lexer->start_state () == LINE_COMMENT_START)
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
432 {
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
433 if (! curr_lexer->comment_text.empty ())
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
434 curr_lexer->finish_comment (octave_comment_elt::full_line);
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
435
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
436 curr_lexer->pop_start_state ();
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
437 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
438
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
439 curr_lexer->push_start_state (BLOCK_COMMENT_START);
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
440
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
441 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
442
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
443 <BLOCK_COMMENT_START>^{S}*{CCHAR}\{{S}*{NL} {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
444 curr_lexer->lexer_debug ("<BLOCK_COMMENT_START>^{S}*{CCHAR}\{{S}*{NL}");
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
445
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
446 curr_lexer->input_line_number++;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
447 curr_lexer->current_input_column = 1;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
448
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
449 if (curr_lexer->block_comment_nesting_level)
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
450 curr_lexer->comment_text = "\n";
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
451
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
452 curr_lexer->block_comment_nesting_level++;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
453 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
454
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
455 %{
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
456 // End of a block comment. If this block comment is nested inside
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
457 // another, wait for the outermost block comment block to be closed
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
458 // before storing the comment.
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
459 %}
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
460
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
461 <BLOCK_COMMENT_START>^{S}*{CCHAR}\}{S}*{NL} {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
462 curr_lexer->lexer_debug ("<BLOCK_COMMENT_START>^{S}*{CCHAR}\\}{S}*{NL}");
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
463
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
464 curr_lexer->input_line_number++;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
465 curr_lexer->current_input_column = 1;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
466
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
467 if (curr_lexer->block_comment_nesting_level > 1)
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
468 curr_lexer->comment_text = "\n";
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
469 else
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
470 curr_lexer->finish_comment (octave_comment_elt::block);
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
471
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
472 curr_lexer->block_comment_nesting_level--;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
473 curr_lexer->pop_start_state ();
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
474 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
475
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
476 %{
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
477 // Body of a block comment.
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
478 %}
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
479
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
480 <BLOCK_COMMENT_START>.*{NL} {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
481 curr_lexer->lexer_debug ("<BLOCK_COMMENT_START>.*{NL}");
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
482
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
483 curr_lexer->input_line_number++;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
484 curr_lexer->current_input_column = 1;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
485 curr_lexer->comment_text += yytext;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
486 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
487
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
488 %{
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
489 // Full-line or end-of-line comment.
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
490 %}
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
491
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
492 {S}*{CCHAR}.*{NL} {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
493 curr_lexer->lexer_debug ("{S}*{CCHAR}.*{NL}");
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
494
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
495 curr_lexer->push_start_state (LINE_COMMENT_START);
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
496 yyless (0);
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
497 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
498
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
499 <LINE_COMMENT_START>{S}*{CCHAR}.*{NL} {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
500 curr_lexer->lexer_debug ("<LINE_COMMENT_START>{S}*{CCHAR}.*{NL}");
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
501
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
502 bool full_line_comment = curr_lexer->current_input_column == 1;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
503 curr_lexer->input_line_number++;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
504 curr_lexer->current_input_column = 1;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
505
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
506 bool have_space = false;
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
507 size_t len = yyleng;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
508 size_t i = 0;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
509 while (i < len)
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
510 {
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
511 char c = yytext[i];
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
512 if (c == ' ' || c == '\t')
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
513 {
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
514 have_space = true;
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
515 i++;
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
516 }
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
517 else
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
518 break;
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
519 }
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
520
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
521 while (i < len)
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
522 {
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
523 char c = yytext[i];
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
524 if (c == '#' || c == '%')
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
525 i++;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
526 else
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
527 break;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
528 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
529
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
530 curr_lexer->comment_text += &yytext[i];
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
531
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
532 if (! full_line_comment)
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
533 {
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
534 if (have_space)
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
535 curr_lexer->mark_previous_token_trailing_space ();
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
536
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
537 curr_lexer->finish_comment (octave_comment_elt::end_of_line);
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
538
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
539 curr_lexer->pop_start_state ();
16337
6bfd8dbd7d3c don't swallow statements that follow comment lines (bug #38549)
John W. Eaton <jwe@octave.org>
parents: 16334
diff changeset
540
6bfd8dbd7d3c don't swallow statements that follow comment lines (bug #38549)
John W. Eaton <jwe@octave.org>
parents: 16334
diff changeset
541 curr_lexer->xunput ('\n');
6bfd8dbd7d3c don't swallow statements that follow comment lines (bug #38549)
John W. Eaton <jwe@octave.org>
parents: 16334
diff changeset
542 curr_lexer->input_line_number--;
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
543 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
544 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
545
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
546 %{
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
547 // End of a block of full-line comments.
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
548 %}
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
549
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
550 <LINE_COMMENT_START>{ANY_INCLUDING_NL} {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
551 curr_lexer->lexer_debug ("<LINE_COMMENT_START>{ANY_INCLUDING_NL}");
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
552
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
553 curr_lexer->xunput (yytext[0]);
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
554
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
555 curr_lexer->finish_comment (octave_comment_elt::full_line);
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
556
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
557 curr_lexer->pop_start_state ();
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
558 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
559
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
560 %{
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
561 // Imaginary numbers.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
562 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
563
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
564 {NUMBER}{Im} {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
565 curr_lexer->lexer_debug ("{NUMBER}{Im}");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
566
16361
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
567 if (curr_lexer->previous_token_may_be_command ()
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
568 && curr_lexer->space_follows_previous_token ())
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
569 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
570 yyless (0);
16361
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
571 curr_lexer->push_start_state (COMMAND_START);
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
572 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
573 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
574 {
16361
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
575 int tok = curr_lexer->previous_token_value ();
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
576
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
577 if (curr_lexer->whitespace_is_significant ()
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
578 && curr_lexer->space_follows_previous_token ()
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
579 && ! (tok == '[' || tok == '{'
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
580 || curr_lexer->previous_token_is_binop ()))
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
581 {
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
582 yyless (0);
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
583 unput (',');
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
584 }
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
585 else
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
586 {
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
587 curr_lexer->handle_number ();
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
588 return curr_lexer->count_token_internal (IMAG_NUM);
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
589 }
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
590 }
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
591 }
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
592
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
593 %{
15466
d174210ce1ec use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents: 14161
diff changeset
594 // Real numbers. Don't grab the '.' part of a dot operator as part of
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
595 // the constant.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
596 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
597
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
598 {D}+/\.[\*/\\^\'] |
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
599 {NUMBER} {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
600 curr_lexer->lexer_debug ("{D}+/\\.[\\*/\\^\\']|{NUMBER}");
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
601
16361
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
602 if (curr_lexer->previous_token_may_be_command ()
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
603 && curr_lexer->space_follows_previous_token ())
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
604 {
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
605 yyless (0);
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
606 curr_lexer->push_start_state (COMMAND_START);
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
607 }
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
608 else
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
609 {
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
610 int tok = curr_lexer->previous_token_value ();
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
611
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
612 if (curr_lexer->whitespace_is_significant ()
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
613 && curr_lexer->space_follows_previous_token ()
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
614 && ! (tok == '[' || tok == '{'
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
615 || curr_lexer->previous_token_is_binop ()))
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
616 {
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
617 yyless (0);
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
618 unput (',');
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
619 }
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
620 else
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
621 {
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
622 curr_lexer->handle_number ();
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
623 return curr_lexer->count_token_internal (NUM);
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
624 }
e1dcd834751f and foo NUMBER as command syntax (bug #38565)
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
625 }
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
626 }
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
627
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
628 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
629 // Eat whitespace. Whitespace inside matrix constants is handled by
4208
e96f52432059 [project @ 2002-12-03 19:48:57 by jwe]
jwe
parents: 4198
diff changeset
630 // the <MATRIX_START> start state code above.
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
631 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
632
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
633 {S}* {
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
634 curr_lexer->current_input_column += yyleng;
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
635
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
636 curr_lexer->mark_previous_token_trailing_space ();
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
637 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
638
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
639 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
640 // Continuation lines. Allow comments after continuations.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
641 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
642
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
643 {CONT}{S}*{NL} |
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
644 {CONT}{S}*{CCHAR}.*{NL} {
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
645 curr_lexer->lexer_debug ("{CONT}{S}*{NL}|{CONT}{S}*{CCHAR}.*{NL}");
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
646
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
647 curr_lexer->handle_continuation ();
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
648 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
649
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
650 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
651 // End of file.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
652 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
653
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
654 <<EOF>> {
16164
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
655 return curr_lexer->handle_end_of_input ();
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
656 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
657
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
658 %{
16259
0b5ab09dfce4 2/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16257
diff changeset
659 // Identifiers.
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
660 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
661
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
662 {IDENT} {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
663 curr_lexer->lexer_debug ("{IDENT}");
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
664
16259
0b5ab09dfce4 2/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16257
diff changeset
665 int tok = curr_lexer->previous_token_value ();
0b5ab09dfce4 2/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16257
diff changeset
666
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
667 if (curr_lexer->whitespace_is_significant ()
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
668 && curr_lexer->space_follows_previous_token ()
16259
0b5ab09dfce4 2/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16257
diff changeset
669 && ! (tok == '[' || tok == '{'
0b5ab09dfce4 2/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16257
diff changeset
670 || curr_lexer->previous_token_is_binop ()))
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
671 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
672 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
673 unput (',');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
674 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
675 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
676 {
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
677 if (! curr_lexer->looking_at_decl_list
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
678 && curr_lexer->previous_token_may_be_command ())
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
679 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
680 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
681 curr_lexer->push_start_state (COMMAND_START);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
682 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
683 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
684 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
685 int id_tok = curr_lexer->handle_identifier ();
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
686
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
687 if (id_tok >= 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
688 return curr_lexer->count_token_internal (id_tok);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
689 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
690 }
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
691 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
692
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
693 %{
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
694 // Superclass method identifiers.
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
695 %}
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
696
16261
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
697 {IDENT}@{IDENT} |
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
698 {IDENT}@{IDENT}.{IDENT} {
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
699 curr_lexer->lexer_debug ("{IDENT}@{IDENT}|{IDENT}@{IDENT}.{IDENT}");
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
700
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
701 int id_tok = curr_lexer->handle_superclass_identifier ();
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
702
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
703 if (id_tok >= 0)
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
704 {
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
705 curr_lexer->looking_for_object_index = true;
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
706
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
707 return curr_lexer->count_token_internal (SUPERCLASSREF);
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
708 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
709 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
710
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
711 %{
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
712 // Metaclass query
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
713 %}
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
714
16261
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
715 \?{IDENT} |
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
716 \?{IDENT}\.{IDENT} {
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
717 curr_lexer->lexer_debug ("\\?{IDENT}|\\?{IDENT}\\.{IDENT}");
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
718
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
719 int id_tok = curr_lexer->handle_meta_identifier ();
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
720
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
721 if (id_tok >= 0)
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
722 {
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
723 curr_lexer->looking_for_object_index = true;
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
724
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
725 return curr_lexer->count_token_internal (METAQUERY);
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
726 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
727 }
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
728
4930
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe]
jwe
parents: 4923
diff changeset
729 "@" {
16334
06aa4c0f2018 handle foo @... as command syntax
John W. Eaton <jwe@octave.org>
parents: 16325
diff changeset
730 if (curr_lexer->previous_token_may_be_command ()
06aa4c0f2018 handle foo @... as command syntax
John W. Eaton <jwe@octave.org>
parents: 16325
diff changeset
731 && curr_lexer->space_follows_previous_token ())
06aa4c0f2018 handle foo @... as command syntax
John W. Eaton <jwe@octave.org>
parents: 16325
diff changeset
732 {
06aa4c0f2018 handle foo @... as command syntax
John W. Eaton <jwe@octave.org>
parents: 16325
diff changeset
733 yyless (0);
06aa4c0f2018 handle foo @... as command syntax
John W. Eaton <jwe@octave.org>
parents: 16325
diff changeset
734 curr_lexer->push_start_state (COMMAND_START);
06aa4c0f2018 handle foo @... as command syntax
John W. Eaton <jwe@octave.org>
parents: 16325
diff changeset
735 }
06aa4c0f2018 handle foo @... as command syntax
John W. Eaton <jwe@octave.org>
parents: 16325
diff changeset
736 else
06aa4c0f2018 handle foo @... as command syntax
John W. Eaton <jwe@octave.org>
parents: 16325
diff changeset
737 {
06aa4c0f2018 handle foo @... as command syntax
John W. Eaton <jwe@octave.org>
parents: 16325
diff changeset
738 curr_lexer->lexer_debug ("@");
06aa4c0f2018 handle foo @... as command syntax
John W. Eaton <jwe@octave.org>
parents: 16325
diff changeset
739
06aa4c0f2018 handle foo @... as command syntax
John W. Eaton <jwe@octave.org>
parents: 16325
diff changeset
740 curr_lexer->current_input_column++;
06aa4c0f2018 handle foo @... as command syntax
John W. Eaton <jwe@octave.org>
parents: 16325
diff changeset
741
06aa4c0f2018 handle foo @... as command syntax
John W. Eaton <jwe@octave.org>
parents: 16325
diff changeset
742 curr_lexer->looking_at_function_handle++;
06aa4c0f2018 handle foo @... as command syntax
John W. Eaton <jwe@octave.org>
parents: 16325
diff changeset
743 curr_lexer->looking_for_object_index = false;
06aa4c0f2018 handle foo @... as command syntax
John W. Eaton <jwe@octave.org>
parents: 16325
diff changeset
744 curr_lexer->at_beginning_of_statement = false;
06aa4c0f2018 handle foo @... as command syntax
John W. Eaton <jwe@octave.org>
parents: 16325
diff changeset
745
06aa4c0f2018 handle foo @... as command syntax
John W. Eaton <jwe@octave.org>
parents: 16325
diff changeset
746 return curr_lexer->count_token ('@');
06aa4c0f2018 handle foo @... as command syntax
John W. Eaton <jwe@octave.org>
parents: 16325
diff changeset
747 }
4342
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe]
jwe
parents: 4323
diff changeset
748 }
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe]
jwe
parents: 4323
diff changeset
749
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe]
jwe
parents: 4323
diff changeset
750 %{
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
751 // A new line character. New line characters inside matrix constants
4208
e96f52432059 [project @ 2002-12-03 19:48:57 by jwe]
jwe
parents: 4198
diff changeset
752 // are handled by the <MATRIX_START> start state code above. If closest
985
4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe]
jwe
parents: 975
diff changeset
753 // nesting is inside parentheses, don't return a row separator.
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
754 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
755
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
756 {NL} {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
757 curr_lexer->lexer_debug ("{NL}");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
758
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
759 curr_lexer->input_line_number++;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
760 curr_lexer->current_input_column = 1;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
761
16309
e608de76742c allow newline to terminate anonymous function definition
John W. Eaton <jwe@octave.org>
parents: 16299
diff changeset
762 if (curr_lexer->nesting_level.is_paren ())
e608de76742c allow newline to terminate anonymous function definition
John W. Eaton <jwe@octave.org>
parents: 16299
diff changeset
763 {
e608de76742c allow newline to terminate anonymous function definition
John W. Eaton <jwe@octave.org>
parents: 16299
diff changeset
764 curr_lexer->at_beginning_of_statement = false;
e608de76742c allow newline to terminate anonymous function definition
John W. Eaton <jwe@octave.org>
parents: 16299
diff changeset
765 curr_lexer->gripe_matlab_incompatible
e608de76742c allow newline to terminate anonymous function definition
John W. Eaton <jwe@octave.org>
parents: 16299
diff changeset
766 ("bare newline inside parentheses");
e608de76742c allow newline to terminate anonymous function definition
John W. Eaton <jwe@octave.org>
parents: 16299
diff changeset
767 }
e608de76742c allow newline to terminate anonymous function definition
John W. Eaton <jwe@octave.org>
parents: 16299
diff changeset
768 else if (curr_lexer->nesting_level.none ()
e608de76742c allow newline to terminate anonymous function definition
John W. Eaton <jwe@octave.org>
parents: 16299
diff changeset
769 || curr_lexer->nesting_level.is_anon_fcn_body ())
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
770 {
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
771 curr_lexer->at_beginning_of_statement = true;
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
772 return curr_lexer->count_token ('\n');
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
773 }
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
774 else if (curr_lexer->nesting_level.is_bracket_or_brace ())
985
4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe]
jwe
parents: 975
diff changeset
775 return LEXICAL_ERROR;
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
776 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
777
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
778 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
779 // Single quote can either be the beginning of a string or a transpose
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
780 // operator.
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
781 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
782
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
783 "'" {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
784 curr_lexer->lexer_debug ("'");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
785
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
786 if (curr_lexer->previous_token_may_be_command ()
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
787 && curr_lexer->space_follows_previous_token ())
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
788 {
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
789 yyless (0);
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
790 curr_lexer->push_start_state (COMMAND_START);
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
791 }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
792 else
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
793 {
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
794 int tok = curr_lexer->previous_token_value ();
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
795
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
796 if (curr_lexer->whitespace_is_significant ())
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
797 {
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
798 if (curr_lexer->space_follows_previous_token ())
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
799 {
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
800 if (tok == '[' || tok == '{'
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
801 || curr_lexer->previous_token_is_binop ())
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
802 {
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
803 curr_lexer->current_input_column++;
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
804 int retval = curr_lexer->handle_string ('\'');
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
805 return curr_lexer->count_token_internal (retval);
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
806 }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
807 else
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
808 {
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
809 yyless (0);
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
810 curr_lexer->xunput (',');
16281
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
811 // Adjust for comma that was not really in the input stream.
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
812 curr_lexer->current_input_column--;
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
813 }
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
814 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
815 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
816 {
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
817 if (tok == '[' || tok == '{'
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
818 || curr_lexer->previous_token_is_binop ()
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
819 || curr_lexer->previous_token_is_keyword ())
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
820 {
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
821 curr_lexer->current_input_column++;
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
822 int retval = curr_lexer->handle_string ('\'');
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
823 return curr_lexer->count_token_internal (retval);
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
824 }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
825 else
16284
09881dab3aaf * lex.ll, oct-parse.in.yy (HERMITIAN): Rename token from QUOTE.
John W. Eaton <jwe@octave.org>
parents: 16283
diff changeset
826 return curr_lexer->count_token (HERMITIAN);
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
827 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
828 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
829 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
830 {
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
831 if (! tok || tok == '[' || tok == '{' || tok == '('
16267
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
832 || curr_lexer->previous_token_is_binop ()
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
833 || curr_lexer->previous_token_is_keyword ())
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
834 {
16261
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
835 curr_lexer->current_input_column++;
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
836 int retval = curr_lexer->handle_string ('\'');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
837 return curr_lexer->count_token_internal (retval);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
838 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
839 else
16284
09881dab3aaf * lex.ll, oct-parse.in.yy (HERMITIAN): Rename token from QUOTE.
John W. Eaton <jwe@octave.org>
parents: 16283
diff changeset
840 return curr_lexer->count_token (HERMITIAN);
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
841 }
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
842 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
843 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
844
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
845 %{
971
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
846 // Double quotes always begin strings.
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
847 %}
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
848
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
849 \" {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
850 curr_lexer->lexer_debug ("\"");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
851
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
852 if (curr_lexer->previous_token_may_be_command ()
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
853 && curr_lexer->space_follows_previous_token ())
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
854 {
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
855 yyless (0);
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
856 curr_lexer->push_start_state (COMMAND_START);
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
857 }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
858 else
16261
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
859 {
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
860 int tok = curr_lexer->previous_token_value ();
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
861
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
862 if (curr_lexer->whitespace_is_significant ())
16261
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
863 {
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
864 if (curr_lexer->space_follows_previous_token ())
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
865 {
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
866 if (tok == '[' || tok == '{'
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
867 || curr_lexer->previous_token_is_binop ())
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
868 {
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
869 curr_lexer->current_input_column++;
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
870 int retval = curr_lexer->handle_string ('"');
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
871 return curr_lexer->count_token_internal (retval);
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
872 }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
873 else
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
874 {
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
875 yyless (0);
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
876 curr_lexer->xunput (',');
16281
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
877 // Adjust for comma that was not really in the input stream.
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
878 curr_lexer->current_input_column--;
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
879 }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
880 }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
881 else
16261
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
882 {
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
883 curr_lexer->current_input_column++;
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
884 int retval = curr_lexer->handle_string ('"');
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
885 return curr_lexer->count_token_internal (retval);
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
886 }
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
887 }
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
888 else
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
889 {
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
890 curr_lexer->current_input_column++;
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
891 int retval = curr_lexer->handle_string ('"');
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
892 return curr_lexer->count_token_internal (retval);
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
893 }
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
894 }
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
895 }
971
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
896
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
897 %{
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
898 // Other operators.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
899 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
900
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
901 ":" { CMD_OR_OP (":", ':', true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
902 ".+" { CMD_OR_OP (".+", EPLUS, false); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
903 ".-" { CMD_OR_OP (".-", EMINUS, false); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
904 ".*" { CMD_OR_OP (".*", EMUL, true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
905 "./" { CMD_OR_OP ("./", EDIV, true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
906 ".\\" { CMD_OR_OP (".\\", ELEFTDIV, true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
907 ".^" { CMD_OR_OP (".^", EPOW, true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
908 ".**" { CMD_OR_OP (".**", EPOW, false); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
909 "<=" { CMD_OR_OP ("<=", EXPR_LE, true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
910 "==" { CMD_OR_OP ("==", EXPR_EQ, true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
911 "~=" { CMD_OR_OP ("~=", EXPR_NE, true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
912 "!=" { CMD_OR_OP ("!=", EXPR_NE, false); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
913 ">=" { CMD_OR_OP (">=", EXPR_GE, true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
914 "&" { CMD_OR_OP ("&", EXPR_AND, true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
915 "|" { CMD_OR_OP ("|", EXPR_OR, true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
916 "<" { CMD_OR_OP ("<", EXPR_LT, true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
917 ">" { CMD_OR_OP (">", EXPR_GT, true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
918 "*" { CMD_OR_OP ("*", '*', true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
919 "/" { CMD_OR_OP ("/", '/', true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
920
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
921 %{
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
922 // In Matlab, '\' may also trigger command syntax.
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
923 %}
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
924
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
925 "\\" { return curr_lexer->handle_op ("\\", LEFTDIV); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
926
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
927 "^" { CMD_OR_OP ("^", POW, true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
928 "**" { CMD_OR_OP ("**", POW, false); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
929 "&&" { CMD_OR_OP ("&&", EXPR_AND_AND, true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
930 "||" { CMD_OR_OP ("||", EXPR_OR_OR, true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
931 "<<" { CMD_OR_OP ("<<", LSHIFT, false); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
932 ">>" { CMD_OR_OP (">>", RSHIFT, false); }
16265
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
933
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
934 ";" {
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
935 bool at_beginning_of_statement
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
936 = (! (curr_lexer->whitespace_is_significant ()
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
937 || curr_lexer->looking_at_object_index.front ()));
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
938
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
939 return curr_lexer->handle_op (";", ';', at_beginning_of_statement);
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
940 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
941
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
942 "+" { CMD_OR_UNARY_OP ("+", '+', true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
943 "-" { CMD_OR_UNARY_OP ("-", '-', true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
944
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
945 "~" { CMD_OR_UNARY_OP ("~", EXPR_NOT, true); }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
946 "!" { CMD_OR_UNARY_OP ("!", EXPR_NOT, false); }
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
947
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
948 "," {
16265
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
949 bool at_beginning_of_statement
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
950 = (! (curr_lexer->whitespace_is_significant ()
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
951 || curr_lexer->looking_at_object_index.front ()));
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
952
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
953 return curr_lexer->handle_op (",", ',', at_beginning_of_statement);
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
954 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
955
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
956 ".'" {
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
957 return curr_lexer->handle_op (".'", TRANSPOSE, false);
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
958 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
959
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
960 "++" {
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
961 curr_lexer->lexer_debug ("++");
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
962
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
963 int tok = curr_lexer->handle_incompatible_unary_op (PLUS_PLUS, false);
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
964
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
965 if (tok < 0)
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
966 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
967 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
968 curr_lexer->xunput (',');
16281
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
969 // Adjust for comma that was not really in the input stream.
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
970 curr_lexer->current_input_column--;
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
971 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
972 else
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
973 return tok;
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
974 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
975
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
976 "--" {
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
977 curr_lexer->lexer_debug ("--");
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
978
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
979 int tok = curr_lexer->handle_incompatible_unary_op (MINUS_MINUS, false);
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
980
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
981 if (tok < 0)
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
982 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
983 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
984 curr_lexer->xunput (',');
16281
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
985 // Adjust for comma that was not really in the input stream.
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
986 curr_lexer->current_input_column--;
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
987 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
988 else
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
989 return tok;
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
990 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
991
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
992 "(" {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
993 curr_lexer->lexer_debug ("(");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
994
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
995 bool unput_comma = false;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
996
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
997 if (curr_lexer->whitespace_is_significant ()
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
998 && curr_lexer->space_follows_previous_token ())
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
999 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1000 int tok = curr_lexer->previous_token_value ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1001
16267
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
1002 if (! (tok == '[' || tok == '{'
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1003 || curr_lexer->previous_token_is_binop ()))
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1004 unput_comma = true;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1005 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1006
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1007 if (unput_comma)
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1008 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1009 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1010 curr_lexer->xunput (',');
16281
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
1011 // Adjust for comma that was not really in the input stream.
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
1012 curr_lexer->current_input_column--;
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1013 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1014 else
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1015 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1016 // If we are looking for an object index, then push TRUE for
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1017 // looking_at_object_index. Otherwise, just push whatever state
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1018 // is current (so that we can pop it off the stack when we find
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1019 // the matching close paren).
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1020
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1021 curr_lexer->looking_at_object_index.push_front
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1022 (curr_lexer->looking_for_object_index);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1023
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1024 curr_lexer->looking_at_indirect_ref = false;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1025 curr_lexer->looking_for_object_index = false;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1026 curr_lexer->at_beginning_of_statement = false;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1027
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1028 curr_lexer->nesting_level.paren ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1029 curr_lexer->decrement_promptflag ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1030
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1031 return curr_lexer->handle_token ('(');
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1032 }
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
1033 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
1034
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
1035 ")" {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1036 curr_lexer->lexer_debug (")");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1037
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1038 curr_lexer->nesting_level.remove ();
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1039 curr_lexer->current_input_column++;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1040
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1041 curr_lexer->looking_at_object_index.pop_front ();
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1042
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1043 curr_lexer->looking_for_object_index = true;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1044 curr_lexer->at_beginning_of_statement = false;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1045
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1046 if (curr_lexer->looking_at_anon_fcn_args)
16265
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
1047 {
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
1048 curr_lexer->looking_at_anon_fcn_args = false;
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
1049 curr_lexer->nesting_level.anon_fcn_body ();
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
1050 }
13237
1bfca2bbea8b fix parsing of anonymous functions inside cell array lists.
John W. Eaton <jwe@octave.org>
parents: 12801
diff changeset
1051
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1052 return curr_lexer->count_token (')');
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
1053 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
1054
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
1055 "." {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1056 curr_lexer->lexer_debug (".");
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
1057
16325
fc565603ccbb also accept "." as possibly beginning a command
John W. Eaton <jwe@octave.org>
parents: 16320
diff changeset
1058 if (curr_lexer->previous_token_may_be_command ()
fc565603ccbb also accept "." as possibly beginning a command
John W. Eaton <jwe@octave.org>
parents: 16320
diff changeset
1059 && curr_lexer->space_follows_previous_token ())
fc565603ccbb also accept "." as possibly beginning a command
John W. Eaton <jwe@octave.org>
parents: 16320
diff changeset
1060 {
fc565603ccbb also accept "." as possibly beginning a command
John W. Eaton <jwe@octave.org>
parents: 16320
diff changeset
1061 yyless (0);
fc565603ccbb also accept "." as possibly beginning a command
John W. Eaton <jwe@octave.org>
parents: 16320
diff changeset
1062 curr_lexer->push_start_state (COMMAND_START);
fc565603ccbb also accept "." as possibly beginning a command
John W. Eaton <jwe@octave.org>
parents: 16320
diff changeset
1063 }
fc565603ccbb also accept "." as possibly beginning a command
John W. Eaton <jwe@octave.org>
parents: 16320
diff changeset
1064 else
fc565603ccbb also accept "." as possibly beginning a command
John W. Eaton <jwe@octave.org>
parents: 16320
diff changeset
1065 {
fc565603ccbb also accept "." as possibly beginning a command
John W. Eaton <jwe@octave.org>
parents: 16320
diff changeset
1066 curr_lexer->looking_for_object_index = false;
fc565603ccbb also accept "." as possibly beginning a command
John W. Eaton <jwe@octave.org>
parents: 16320
diff changeset
1067 curr_lexer->at_beginning_of_statement = false;
fc565603ccbb also accept "." as possibly beginning a command
John W. Eaton <jwe@octave.org>
parents: 16320
diff changeset
1068
fc565603ccbb also accept "." as possibly beginning a command
John W. Eaton <jwe@octave.org>
parents: 16320
diff changeset
1069 return curr_lexer->handle_token ('.');
fc565603ccbb also accept "." as possibly beginning a command
John W. Eaton <jwe@octave.org>
parents: 16320
diff changeset
1070 }
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
1071 }
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1072
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1073 %{
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1074 // = and op= operators.
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1075 %}
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1076
16360
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1077 "=" {
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1078 curr_lexer->maybe_mark_previous_token_as_variable ();
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1079
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1080 return curr_lexer->handle_op ("=", '=');
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1081 }
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1082
16273
c5e5f6ccac5d 9/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16271
diff changeset
1083 "+=" { return curr_lexer->handle_incompatible_op ("+=", ADD_EQ); }
c5e5f6ccac5d 9/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16271
diff changeset
1084 "-=" { return curr_lexer->handle_incompatible_op ("-=", SUB_EQ); }
c5e5f6ccac5d 9/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16271
diff changeset
1085 "*=" { return curr_lexer->handle_incompatible_op ("*=", MUL_EQ); }
c5e5f6ccac5d 9/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16271
diff changeset
1086 "/=" { return curr_lexer->handle_incompatible_op ("/=", DIV_EQ); }
c5e5f6ccac5d 9/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16271
diff changeset
1087 "\\=" { return curr_lexer->handle_incompatible_op ("\\=", LEFTDIV_EQ); }
c5e5f6ccac5d 9/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16271
diff changeset
1088 ".+=" { return curr_lexer->handle_incompatible_op (".+=", ADD_EQ); }
c5e5f6ccac5d 9/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16271
diff changeset
1089 ".-=" { return curr_lexer->handle_incompatible_op (".-=", SUB_EQ); }
c5e5f6ccac5d 9/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16271
diff changeset
1090 ".*=" { return curr_lexer->handle_incompatible_op (".*=", EMUL_EQ); }
c5e5f6ccac5d 9/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16271
diff changeset
1091 "./=" { return curr_lexer->handle_incompatible_op ("./=", EDIV_EQ); }
c5e5f6ccac5d 9/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16271
diff changeset
1092 ".\\=" { return curr_lexer->handle_incompatible_op (".\\=", ELEFTDIV_EQ); }
c5e5f6ccac5d 9/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16271
diff changeset
1093 "^=" { return curr_lexer->handle_incompatible_op ("^=", POW_EQ); }
c5e5f6ccac5d 9/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16271
diff changeset
1094 "**=" { return curr_lexer->handle_incompatible_op ("^=", POW_EQ); }
c5e5f6ccac5d 9/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16271
diff changeset
1095 ".^=" { return curr_lexer->handle_incompatible_op (".^=", EPOW_EQ); }
c5e5f6ccac5d 9/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16271
diff changeset
1096 ".**=" { return curr_lexer->handle_incompatible_op (".^=", EPOW_EQ); }
c5e5f6ccac5d 9/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16271
diff changeset
1097 "&=" { return curr_lexer->handle_incompatible_op ("&=", AND_EQ); }
c5e5f6ccac5d 9/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16271
diff changeset
1098 "|=" { return curr_lexer->handle_incompatible_op ("|=", OR_EQ); }
c5e5f6ccac5d 9/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16271
diff changeset
1099 "<<=" { return curr_lexer->handle_incompatible_op ("<<=", LSHIFT_EQ); }
c5e5f6ccac5d 9/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16271
diff changeset
1100 ">>=" { return curr_lexer->handle_incompatible_op (">>=", RSHIFT_EQ); }
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1101
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
1102 %{
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
1103 // In Matlab, '{' may also trigger command syntax.
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
1104 %}
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
1105
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1106 "{" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1107 curr_lexer->lexer_debug ("{");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1108
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1109 bool unput_comma = false;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1110
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1111 if (curr_lexer->whitespace_is_significant ()
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1112 && curr_lexer->space_follows_previous_token ())
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1113 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1114 int tok = curr_lexer->previous_token_value ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1115
16267
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
1116 if (! (tok == '[' || tok == '{'
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1117 || curr_lexer->previous_token_is_binop ()))
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1118 unput_comma = true;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1119 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1120
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1121 if (unput_comma)
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1122 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1123 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1124 curr_lexer->xunput (',');
16281
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
1125 // Adjust for comma that was not really in the input stream.
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream
John W. Eaton <jwe@octave.org>
parents: 16277
diff changeset
1126 curr_lexer->current_input_column--;
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1127 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1128 else
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1129 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1130 curr_lexer->nesting_level.brace ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1131
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1132 curr_lexer->looking_at_object_index.push_front
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1133 (curr_lexer->looking_for_object_index);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1134
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1135 curr_lexer->current_input_column += yyleng;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1136 curr_lexer->looking_for_object_index = false;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1137 curr_lexer->at_beginning_of_statement = false;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1138
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1139 curr_lexer->decrement_promptflag ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1140
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1141 curr_lexer->braceflag++;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1142
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1143 curr_lexer->push_start_state (MATRIX_START);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1144
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1145 return curr_lexer->count_token ('{');
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1146 }
3351
8623649c967c [project @ 1999-11-15 16:17:01 by jwe]
jwe
parents: 3332
diff changeset
1147 }
8623649c967c [project @ 1999-11-15 16:17:01 by jwe]
jwe
parents: 3332
diff changeset
1148
8623649c967c [project @ 1999-11-15 16:17:01 by jwe]
jwe
parents: 3332
diff changeset
1149 "}" {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1150 curr_lexer->lexer_debug ("}");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1151
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1152 curr_lexer->looking_at_object_index.pop_front ();
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1153
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1154 curr_lexer->looking_for_object_index = true;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1155 curr_lexer->at_beginning_of_statement = false;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1156
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1157 curr_lexer->nesting_level.remove ();
3351
8623649c967c [project @ 1999-11-15 16:17:01 by jwe]
jwe
parents: 3332
diff changeset
1158
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1159 return curr_lexer->handle_token ('}');
3351
8623649c967c [project @ 1999-11-15 16:17:01 by jwe]
jwe
parents: 3332
diff changeset
1160 }
8623649c967c [project @ 1999-11-15 16:17:01 by jwe]
jwe
parents: 3332
diff changeset
1161
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
1162 %{
2066
a75d2a5d6783 [project @ 1996-04-11 21:20:43 by jwe]
jwe
parents: 2042
diff changeset
1163 // Unrecognized input is a lexical error.
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
1164 %}
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
1165
2042
31f4f775b8c6 [project @ 1996-03-28 09:06:28 by jwe]
jwe
parents: 1994
diff changeset
1166 . {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1167 curr_lexer->lexer_debug (".");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1168
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
1169 curr_lexer->xunput (yytext[0]);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1170
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1171 int c = curr_lexer->text_yyinput ();
4248
eef64f3f9a4c [project @ 2002-12-31 00:00:20 by jwe]
jwe
parents: 4241
diff changeset
1172
16294
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
1173 if (c == 1)
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
1174 return -1;
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
1175 else if (c == EOF)
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
1176 return curr_lexer->handle_end_of_input ();
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
1177 else
4240
8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe]
jwe
parents: 4238
diff changeset
1178 {
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1179 curr_lexer->current_input_column++;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1180
15466
d174210ce1ec use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents: 14161
diff changeset
1181 error ("invalid character '%s' (ASCII %d) near line %d, column %d",
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1182 undo_string_escape (static_cast<char> (c)), c,
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1183 curr_lexer->input_line_number, curr_lexer->current_input_column);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1184
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1185 return LEXICAL_ERROR;
4240
8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe]
jwe
parents: 4238
diff changeset
1186 }
2066
a75d2a5d6783 [project @ 1996-04-11 21:20:43 by jwe]
jwe
parents: 2042
diff changeset
1187 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
1188
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
1189 %%
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
1190
8447
adab48231a03 make input_line_number work again
John W. Eaton <jwe@octave.org>
parents: 8312
diff changeset
1191 static void
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1192 display_character (char c)
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1193 {
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1194 if (isgraph (c))
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1195 std::cerr << c;
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1196 else
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1197 switch (c)
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1198 {
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1199 case 0:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1200 std::cerr << "NUL";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1201 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1202
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1203 case 1:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1204 std::cerr << "SOH";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1205 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1206
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1207 case 2:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1208 std::cerr << "STX";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1209 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1210
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1211 case 3:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1212 std::cerr << "ETX";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1213 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1214
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1215 case 4:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1216 std::cerr << "EOT";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1217 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1218
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1219 case 5:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1220 std::cerr << "ENQ";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1221 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1222
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1223 case 6:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1224 std::cerr << "ACK";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1225 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1226
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1227 case 7:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1228 std::cerr << "\\a";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1229 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1230
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1231 case 8:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1232 std::cerr << "\\b";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1233 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1234
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1235 case 9:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1236 std::cerr << "\\t";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1237 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1238
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1239 case 10:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1240 std::cerr << "\\n";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1241 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1242
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1243 case 11:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1244 std::cerr << "\\v";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1245 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1246
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1247 case 12:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1248 std::cerr << "\\f";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1249 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1250
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1251 case 13:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1252 std::cerr << "\\r";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1253 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1254
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1255 case 14:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1256 std::cerr << "SO";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1257 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1258
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1259 case 15:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1260 std::cerr << "SI";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1261 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1262
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1263 case 16:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1264 std::cerr << "DLE";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1265 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1266
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1267 case 17:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1268 std::cerr << "DC1";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1269 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1270
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1271 case 18:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1272 std::cerr << "DC2";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1273 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1274
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1275 case 19:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1276 std::cerr << "DC3";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1277 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1278
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1279 case 20:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1280 std::cerr << "DC4";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1281 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1282
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1283 case 21:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1284 std::cerr << "NAK";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1285 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1286
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1287 case 22:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1288 std::cerr << "SYN";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1289 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1290
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1291 case 23:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1292 std::cerr << "ETB";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1293 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1294
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1295 case 24:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1296 std::cerr << "CAN";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1297 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1298
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1299 case 25:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1300 std::cerr << "EM";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1301 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1302
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1303 case 26:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1304 std::cerr << "SUB";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1305 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1306
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1307 case 27:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1308 std::cerr << "ESC";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1309 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1310
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1311 case 28:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1312 std::cerr << "FS";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1313 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1314
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1315 case 29:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1316 std::cerr << "GS";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1317 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1318
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1319 case 30:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1320 std::cerr << "RS";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1321 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1322
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1323 case 31:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1324 std::cerr << "US";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1325 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1326
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1327 case 32:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1328 std::cerr << "SPACE";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1329 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1330
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1331 case 127:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1332 std::cerr << "DEL";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1333 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1334 }
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1335 }
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
1336
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1337 bool
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1338 is_keyword (const std::string& s)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1339 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1340 // Parsing function names like "set.property_name" inside
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1341 // classdef-style class definitions is simplified by handling the
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1342 // "set" and "get" portions of the names using the same mechanism as
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1343 // is used for keywords. However, they are not really keywords in
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1344 // the language, so omit them from the list of possible keywords.
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1345
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1346 return (octave_kw_hash::in_word_set (s.c_str (), s.length ()) != 0
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1347 && ! (s == "set" || s == "get"));
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1348 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1349
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1350 DEFUN (iskeyword, args, ,
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1351 "-*- texinfo -*-\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1352 @deftypefn {Built-in Function} {} iskeyword ()\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1353 @deftypefnx {Built-in Function} {} iskeyword (@var{name})\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1354 Return true if @var{name} is an Octave keyword. If @var{name}\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1355 is omitted, return a list of keywords.\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1356 @seealso{isvarname, exist}\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1357 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1358 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1359 octave_value retval;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1360
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1361 int argc = args.length () + 1;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1362
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1363 string_vector argv = args.make_argv ("iskeyword");
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1364
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1365 if (error_state)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1366 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1367
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1368 if (argc == 1)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1369 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1370 // Neither set and get are keywords. See the note in the
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1371 // is_keyword function for additional details.
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1372
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1373 string_vector lst (TOTAL_KEYWORDS);
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1374
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1375 int j = 0;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1376
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1377 for (int i = 0; i < TOTAL_KEYWORDS; i++)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1378 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1379 std::string tmp = wordlist[i].name;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1380
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1381 if (! (tmp == "set" || tmp == "get"))
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1382 lst[j++] = tmp;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1383 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1384
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1385 lst.resize (j);
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1386
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1387 retval = Cell (lst.sort ());
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1388 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1389 else if (argc == 2)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1390 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1391 retval = is_keyword (argv[1]);
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1392 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1393 else
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1394 print_usage ();
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1395
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1396 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1397 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1398
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1399 /*
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1400
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1401 %!assert (iskeyword ("for"))
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1402 %!assert (iskeyword ("fort"), false)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1403 %!assert (iskeyword ("fft"), false)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1404
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1405 */
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1406
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1407 // Used to delete trailing white space from tokens.
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1408
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1409 static std::string
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1410 strip_trailing_whitespace (char *s)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1411 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1412 std::string retval = s;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1413
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1414 size_t pos = retval.find_first_of (" \t");
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1415
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1416 if (pos != std::string::npos)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1417 retval.resize (pos);
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1418
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1419 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1420 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1421
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1422 DEFUN (__display_tokens__, args, nargout,
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1423 "-*- texinfo -*-\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1424 @deftypefn {Built-in Function} {} __display_tokens__ ()\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1425 Query or set the internal variable that determines whether Octave's\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1426 lexer displays tokens as they are read.\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1427 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1428 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1429 return SET_INTERNAL_VARIABLE (display_tokens);
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1430 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1431
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1432 DEFUN (__token_count__, , ,
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1433 "-*- texinfo -*-\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1434 @deftypefn {Built-in Function} {} __token_count__ ()\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1435 Number of language tokens processed since Octave startup.\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1436 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1437 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1438 return octave_value (Vtoken_count);
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1439 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1440
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1441 DEFUN (__lexer_debug_flag__, args, nargout,
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1442 "-*- texinfo -*-\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1443 @deftypefn {Built-in Function} {@var{old_val} =} __lexer_debug_flag__ (@var{new_val}))\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1444 Undocumented internal function.\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1445 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1446 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1447 octave_value retval;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1448
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1449 retval = set_internal_variable (lexer_debug_flag, args, nargout,
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1450 "__lexer_debug_flag__");
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1451
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1452 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1453 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1454
16193
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16183
diff changeset
1455 lexical_feedback::~lexical_feedback (void)
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16183
diff changeset
1456 {
16230
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
1457 tokens.clear ();
16194
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1458 }
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1459
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1460 void
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1461 lexical_feedback::init (void)
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1462 {
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1463 // The closest paren, brace, or bracket nesting is not an object
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1464 // index.
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1465 looking_at_object_index.push_front (false);
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1466 }
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1467
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1468 void
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1469 lexical_feedback::reset (void)
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1470 {
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1471 end_of_input = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1472 at_beginning_of_statement = true;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1473 looking_at_anon_fcn_args = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1474 looking_at_return_list = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1475 looking_at_parameter_list = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1476 looking_at_decl_list = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1477 looking_at_initializer_expression = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1478 looking_at_matrix_or_assign_lhs = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1479 looking_for_object_index = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1480 looking_at_indirect_ref = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1481 parsing_class_method = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1482 maybe_classdef_get_set_method = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1483 parsing_classdef = false;
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1484 force_script = false;
16199
810a71122c25 move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16195
diff changeset
1485 reading_fcn_file = false;
810a71122c25 move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16195
diff changeset
1486 reading_script_file = false;
810a71122c25 move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16195
diff changeset
1487 reading_classdef_file = false;
16194
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1488 input_line_number = 1;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1489 current_input_column = 1;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1490 bracketflag = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1491 braceflag = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1492 looping = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1493 defining_func = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1494 looking_at_function_handle = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1495 block_comment_nesting_level = 0;
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1496 token_count = 0;
16207
0467d68ca891 move current_input_line to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16203
diff changeset
1497 current_input_line = "";
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1498 comment_text = "";
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1499 help_text = "";
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1500 fcn_file_name = "";
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1501 fcn_file_full_name = "";
16194
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1502 looking_at_object_index.clear ();
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1503 looking_at_object_index.push_front (false);
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1504
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1505 while (! parsed_function_name.empty ())
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1506 parsed_function_name.pop ();
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1507
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1508 nesting_level.reset ();
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1509
16230
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
1510 tokens.clear ();
16194
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1511 }
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1512
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1513 int
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1514 lexical_feedback::previous_token_value (void) const
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1515 {
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1516 const token *tok = tokens.front ();
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1517 return tok ? tok->token_value () : 0;
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1518 }
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1519
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1520 bool
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1521 lexical_feedback::previous_token_value_is (int tok_val) const
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1522 {
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1523 const token *tok = tokens.front ();
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1524 return tok ? tok->token_value_is (tok_val) : false;
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1525 }
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1526
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1527 void
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1528 lexical_feedback::mark_previous_token_trailing_space (void)
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1529 {
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1530 token *tok = tokens.front ();
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1531 if (tok && ! previous_token_value_is ('\n'))
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1532 tok->mark_trailing_space ();
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1533 }
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1534
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1535 bool
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1536 lexical_feedback::space_follows_previous_token (void) const
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1537 {
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1538 const token *tok = tokens.front ();
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1539 return tok ? tok->space_follows_token () : false;
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1540 }
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1541
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1542 bool
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1543 lexical_feedback::previous_token_is_binop (void) const
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1544 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1545 int tok = previous_token_value ();
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1546
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1547 return (tok == '+' || tok == '-' || tok == '@'
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1548 || tok == ',' || tok == ';' || tok == '*' || tok == '/'
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1549 || tok == ':' || tok == '=' || tok == ADD_EQ
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1550 || tok == AND_EQ || tok == DIV_EQ || tok == EDIV
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1551 || tok == EDIV_EQ || tok == ELEFTDIV || tok == ELEFTDIV_EQ
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1552 || tok == EMINUS || tok == EMUL || tok == EMUL_EQ
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1553 || tok == EPOW || tok == EPOW_EQ || tok == EXPR_AND
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1554 || tok == EXPR_AND_AND || tok == EXPR_EQ || tok == EXPR_GE
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1555 || tok == EXPR_GT || tok == EXPR_LE || tok == EXPR_LT
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1556 || tok == EXPR_NE || tok == EXPR_NOT || tok == EXPR_OR
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1557 || tok == EXPR_OR_OR || tok == LEFTDIV || tok == LEFTDIV_EQ
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1558 || tok == LSHIFT || tok == LSHIFT_EQ || tok == MUL_EQ
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1559 || tok == OR_EQ || tok == POW || tok == POW_EQ
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1560 || tok == RSHIFT || tok == RSHIFT_EQ || tok == SUB_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1561 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1562
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1563 bool
16267
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
1564 lexical_feedback::previous_token_is_keyword (void) const
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
1565 {
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
1566 const token *tok = tokens.front ();
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
1567 return tok ? tok->is_keyword () : false;
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
1568 }
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
1569
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
1570 bool
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1571 lexical_feedback::previous_token_may_be_command (void) const
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1572 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1573 const token *tok = tokens.front ();
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1574 return tok ? tok->may_be_command () : false;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1575 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1576
16360
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1577 void
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1578 lexical_feedback::maybe_mark_previous_token_as_variable (void)
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1579 {
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1580 token *tok = tokens.front ();
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1581 if (tok->is_symbol ())
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1582 pending_local_variables.insert (tok->symbol_name ());
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1583 }
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1584
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1585 void
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1586 lexical_feedback::mark_as_variables (const std::list<std::string>& lst)
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1587 {
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1588 for (std::list<std::string>::const_iterator p = lst.begin ();
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1589 p != lst.end (); p++)
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1590 {
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1591 pending_local_variables.insert (*p);
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1592 }
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1593 }
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1594
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1595 static bool
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1596 looks_like_copyright (const std::string& s)
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1597 {
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1598 bool retval = false;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1599
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1600 if (! s.empty ())
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1601 {
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1602 size_t offset = s.find_first_not_of (" \t");
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1603
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1604 retval = (s.substr (offset, 9) == "Copyright" || s.substr (offset, 6) == "Author");
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1605 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1606
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1607 return retval;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1608 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1609
16194
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1610 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
1611 octave_base_lexer::input_buffer::fill (const std::string& input, bool eof_arg)
16183
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1612 {
16195
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
1613 buffer = input;
16183
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1614 chars_left = buffer.length ();
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1615 pos = buffer.c_str ();
16195
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
1616 eof = eof_arg;
16183
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1617 }
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1618
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1619 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
1620 octave_base_lexer::input_buffer::copy_chunk (char *buf, size_t max_size)
16183
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1621 {
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1622 static const char * const eol = "\n";
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1623
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1624 size_t len = max_size > chars_left ? chars_left : max_size;
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1625 assert (len > 0);
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1626
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1627 memcpy (buf, pos, len);
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1628
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1629 chars_left -= len;
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1630 pos += len;
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1631
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1632 // Make sure input ends with a new line character.
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1633 if (chars_left == 0 && buf[len-1] != '\n')
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1634 {
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1635 if (len < max_size)
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1636 {
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1637 // There is enough room to plug the newline character in
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1638 // the buffer.
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1639 buf[len++] = '\n';
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1640 }
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1641 else
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1642 {
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1643 // There isn't enough room to plug the newline character
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1644 // in the buffer so arrange to have it returned on the next
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
1645 // call to octave_base_lexer::read.
16183
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1646 pos = eol;
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1647 chars_left = 1;
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1648 }
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1649 }
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1650
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1651 return len;
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1652 }
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1653
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
1654 octave_base_lexer::~octave_base_lexer (void)
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1655 {
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1656 yylex_destroy (scanner);
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1657 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1658
16123
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1659 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
1660 octave_base_lexer::init (void)
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1661 {
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1662 yylex_init (&scanner);
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1663
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
1664 // Make octave_base_lexer object available through yyextra in
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1665 // flex-generated lexer.
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1666 yyset_extra (this, scanner);
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
1667
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
1668 clear_start_state ();
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1669 }
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1670
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1671 // Inside Flex-generated functions, yyg is the scanner cast to its real
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
1672 // type. Some flex macros that we use in octave_base_lexer member functions
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
1673 // (for example, BEGIN) use yyg. If we could perform the actions of
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
1674 // these macros with functions instead, we could eliminate the
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
1675 // OCTAVE_YYG macro.
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1676
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1677 #define OCTAVE_YYG \
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1678 struct yyguts_t *yyg = static_cast<struct yyguts_t*> (scanner)
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1679
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1680 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
1681 octave_base_lexer::reset (void)
16123
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1682 {
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1683 // Start off on the right foot.
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
1684 clear_start_state ();
16123
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1685
16320
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
1686 symtab_context.clear ();
16123
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1687
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1688 // We do want a prompt by default.
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
1689 promptflag (1);
16123
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1690
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1691 // Only ask for input from stdin if we are expecting interactive
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1692 // input.
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1693
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1694 if (! quitting_gracefully
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1695 && (interactive || forced_interactive)
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1696 && ! (reading_fcn_file
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1697 || reading_classdef_file
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1698 || reading_script_file
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1699 || input_from_eval_string ()))
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1700 yyrestart (stdin, scanner);
16123
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1701
16194
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1702 lexical_feedback::reset ();
16123
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1703 }
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1704
16124
3be725cd195b move more lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16123
diff changeset
1705 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
1706 octave_base_lexer::prep_for_file (void)
16124
3be725cd195b move more lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16123
diff changeset
1707 {
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1708 reading_script_file = true;
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1709
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
1710 push_start_state (INPUT_FILE_START);
16124
3be725cd195b move more lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16123
diff changeset
1711 }
3be725cd195b move more lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16123
diff changeset
1712
16121
bdf365c5c9bf maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16120
diff changeset
1713 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
1714 octave_base_lexer::handle_end_of_input (void)
16164
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1715 {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1716 lexer_debug ("<<EOF>>");
16164
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1717
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1718 if (block_comment_nesting_level != 0)
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1719 {
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1720 warning ("block comment open at end of input");
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1721
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1722 if ((reading_fcn_file || reading_script_file || reading_classdef_file)
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1723 && ! fcn_file_name.empty ())
16164
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1724 warning ("near line %d of file '%s.m'",
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1725 input_line_number, fcn_file_name.c_str ());
16164
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1726 }
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1727
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1728 return handle_token (END_OF_INPUT);
16164
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1729 }
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1730
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
1731 char *
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
1732 octave_base_lexer::flex_yytext (void)
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
1733 {
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1734 return yyget_text (scanner);
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
1735 }
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
1736
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
1737 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
1738 octave_base_lexer::flex_yyleng (void)
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
1739 {
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1740 return yyget_leng (scanner);
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
1741 }
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
1742
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1743 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
1744 octave_base_lexer::text_yyinput (void)
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1745 {
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1746 int c = yyinput (scanner);
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1747
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1748 if (lexer_debug_flag)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1749 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1750 std::cerr << "I: ";
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1751 display_character (c);
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1752 std::cerr << std::endl;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1753 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1754
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1755 // Convert CRLF into just LF and single CR into LF.
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1756
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1757 if (c == '\r')
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1758 {
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1759 c = yyinput (scanner);
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1760
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1761 if (lexer_debug_flag)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1762 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1763 std::cerr << "I: ";
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1764 display_character (c);
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1765 std::cerr << std::endl;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1766 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1767
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1768 if (c != '\n')
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1769 {
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
1770 xunput (c);
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1771 c = '\n';
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1772 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1773 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1774
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1775 return c;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1776 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1777
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1778 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
1779 octave_base_lexer::xunput (char c, char *buf)
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1780 {
16164
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1781 if (c != EOF)
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1782 {
16164
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1783 if (lexer_debug_flag)
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1784 {
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1785 std::cerr << "U: ";
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1786 display_character (c);
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1787 std::cerr << std::endl;
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1788 }
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1789
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1790 yyunput (c, buf, scanner);
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1791 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1792 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1793
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
1794 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
1795 octave_base_lexer::xunput (char c)
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
1796 {
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
1797 char *yytxt = flex_yytext ();
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1798
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
1799 xunput (c, yytxt);
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
1800 }
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
1801
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1802 bool
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
1803 octave_base_lexer::looking_at_space (void)
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
1804 {
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
1805 int c = text_yyinput ();
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
1806 xunput (c);
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
1807 return (c == ' ' || c == '\t');
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
1808 }
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
1809
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
1810 bool
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
1811 octave_base_lexer::inside_any_object_index (void)
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
1812 {
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
1813 bool retval = false;
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
1814
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1815 for (std::list<bool>::const_iterator i = looking_at_object_index.begin ();
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1816 i != looking_at_object_index.end (); i++)
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
1817 {
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
1818 if (*i)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1819 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1820 retval = true;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1821 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1822 }
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
1823 }
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
1824
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
1825 return retval;
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
1826 }
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
1827
16360
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1828 bool
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1829 octave_base_lexer::is_variable (const std::string& name)
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1830 {
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1831 return (symbol_table::is_variable (name)
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1832 || (pending_local_variables.find (name)
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1833 != pending_local_variables.end ()));
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1834 }
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
1835
4238
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe]
jwe
parents: 4237
diff changeset
1836 // Handle keywords. Return -1 if the keyword should be ignored.
767
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe]
jwe
parents: 747
diff changeset
1837
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1838 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
1839 octave_base_lexer::is_keyword_token (const std::string& s)
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
1840 {
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1841 int l = input_line_number;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1842 int c = current_input_column;
3805
44386b0e53da [project @ 2001-03-01 16:54:31 by jwe]
jwe
parents: 3802
diff changeset
1843
1823
5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe]
jwe
parents: 1755
diff changeset
1844 int len = s.length ();
922
708827b941b4 [project @ 1994-11-14 22:14:13 by jwe]
jwe
parents: 916
diff changeset
1845
5088
7830f271a53f [project @ 2004-12-01 19:54:45 by jwe]
jwe
parents: 5035
diff changeset
1846 const octave_kw *kw = octave_kw_hash::in_word_set (s.c_str (), len);
191
b6b4d8c513fe [project @ 1993-10-29 23:41:39 by jwe]
jwe
parents: 186
diff changeset
1847
1497
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe]
jwe
parents: 1489
diff changeset
1848 if (kw)
143
7849db4b6dbc [project @ 1993-10-04 02:36:45 by jwe]
jwe
parents: 120
diff changeset
1849 {
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
1850 token *tok_val = 0;
1497
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe]
jwe
parents: 1489
diff changeset
1851
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe]
jwe
parents: 1489
diff changeset
1852 switch (kw->kw_id)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1853 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1854 case break_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1855 case catch_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1856 case continue_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1857 case else_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1858 case otherwise_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1859 case return_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1860 case unwind_protect_cleanup_kw:
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1861 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1862 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1863
14294
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
1864 case static_kw:
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
1865 if ((reading_fcn_file || reading_script_file
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
1866 || reading_classdef_file)
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1867 && ! fcn_file_full_name.empty ())
14294
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
1868 warning_with_id ("Octave:deprecated-keyword",
15468
6437fa7263dd use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents: 15467
diff changeset
1869 "the 'static' keyword is obsolete and will be removed from a future version of Octave; please use 'persistent' instead; near line %d of file '%s'",
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1870 input_line_number,
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1871 fcn_file_full_name.c_str ());
14294
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
1872 else
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
1873 warning_with_id ("Octave:deprecated-keyword",
15468
6437fa7263dd use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents: 15467
diff changeset
1874 "the 'static' keyword is obsolete and will be removed from a future version of Octave; please use 'persistent' instead; near line %d",
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1875 input_line_number);
14294
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
1876 // fall through ...
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
1877
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
1878 case persistent_kw:
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1879 case global_kw:
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1880 looking_at_decl_list = true;
14294
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
1881 break;
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
1882
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1883 case case_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1884 case elseif_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1885 case until_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1886 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1887
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1888 case end_kw:
14645
cbc00b587f36 also allow "end" indexing in classdef files
John W. Eaton <jwe@octave.org>
parents: 14642
diff changeset
1889 if (inside_any_object_index ()
cbc00b587f36 also allow "end" indexing in classdef files
John W. Eaton <jwe@octave.org>
parents: 14642
diff changeset
1890 || (! reading_classdef_file
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1891 && (defining_func
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1892 && ! (looking_at_return_list
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1893 || parsed_function_name.top ()))))
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1894 return 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1895
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1896 tok_val = new token (end_kw, token::simple_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1897 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1898 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1899
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1900 case end_try_catch_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1901 tok_val = new token (end_try_catch_kw, token::try_catch_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1902 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1903 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1904
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1905 case end_unwind_protect_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1906 tok_val = new token (end_unwind_protect_kw,
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1907 token::unwind_protect_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1908 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1909 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1910
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1911 case endfor_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1912 tok_val = new token (endfor_kw, token::for_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1913 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1914 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1915
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1916 case endfunction_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1917 tok_val = new token (endfunction_kw, token::function_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1918 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1919 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1920
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1921 case endif_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1922 tok_val = new token (endif_kw, token::if_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1923 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1924 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1925
13246
0c69a564f2be additional parfor changes
John W. Eaton <jwe@octave.org>
parents: 13245
diff changeset
1926 case endparfor_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1927 tok_val = new token (endparfor_kw, token::parfor_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1928 at_beginning_of_statement = true;
13246
0c69a564f2be additional parfor changes
John W. Eaton <jwe@octave.org>
parents: 13245
diff changeset
1929 break;
0c69a564f2be additional parfor changes
John W. Eaton <jwe@octave.org>
parents: 13245
diff changeset
1930
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1931 case endswitch_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1932 tok_val = new token (endswitch_kw, token::switch_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1933 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1934 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1935
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1936 case endwhile_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1937 tok_val = new token (endwhile_kw, token::while_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1938 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1939 break;
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
1940
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1941 case endclassdef_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1942 tok_val = new token (endclassdef_kw, token::classdef_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1943 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1944 break;
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
1945
13249
7861a5fd3479 accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents: 13246
diff changeset
1946 case endenumeration_kw:
16267
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
1947 tok_val = new token (endenumeration_kw, token::enumeration_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1948 at_beginning_of_statement = true;
13249
7861a5fd3479 accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents: 13246
diff changeset
1949 break;
7861a5fd3479 accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents: 13246
diff changeset
1950
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1951 case endevents_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1952 tok_val = new token (endevents_kw, token::events_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1953 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1954 break;
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
1955
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1956 case endmethods_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1957 tok_val = new token (endmethods_kw, token::methods_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1958 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1959 break;
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
1960
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1961 case endproperties_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1962 tok_val = new token (endproperties_kw, token::properties_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1963 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1964 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1965
13245
027a2186cd90 parfor keyword and infrastructure, but handle parfor as normal for loop for now
John W. Eaton <jwe@octave.org>
parents: 13237
diff changeset
1966
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1967 case for_kw:
13245
027a2186cd90 parfor keyword and infrastructure, but handle parfor as normal for loop for now
John W. Eaton <jwe@octave.org>
parents: 13237
diff changeset
1968 case parfor_kw:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1969 case while_kw:
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
1970 decrement_promptflag ();
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1971 looping++;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1972 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1973
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1974 case do_kw:
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1975 at_beginning_of_statement = true;
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
1976 decrement_promptflag ();
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1977 looping++;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1978 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1979
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1980 case try_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1981 case unwind_protect_kw:
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1982 at_beginning_of_statement = true;
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
1983 decrement_promptflag ();
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1984 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1985
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1986 case if_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1987 case switch_kw:
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
1988 decrement_promptflag ();
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1989 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1990
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1991 case get_kw:
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
1992 case set_kw:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1993 // 'get' and 'set' are keywords in classdef method
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1994 // declarations.
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1995 if (! maybe_classdef_get_set_method)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1996 return 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1997 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1998
13249
7861a5fd3479 accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents: 13246
diff changeset
1999 case enumeration_kw:
7861a5fd3479 accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents: 13246
diff changeset
2000 case events_kw:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2001 case methods_kw:
13249
7861a5fd3479 accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents: 13246
diff changeset
2002 case properties_kw:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2003 // 'properties', 'methods' and 'events' are keywords for
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2004 // classdef blocks.
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2005 if (! parsing_classdef)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2006 return 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2007 // fall through ...
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2008
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2009 case classdef_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2010 // 'classdef' is always a keyword.
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
2011 decrement_promptflag ();
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2012
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2013 if (! force_script && token_count == 0 && input_from_file ())
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2014 {
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2015 reading_classdef_file = true;
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2016 reading_script_file = false;
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2017 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2018 break;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2019
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2020 case function_kw:
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
2021 decrement_promptflag ();
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2022
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2023 defining_func++;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2024 parsed_function_name.push (false);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2025
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2026 if (! force_script && token_count == 0 && input_from_file ())
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2027 {
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2028 reading_fcn_file = true;
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2029 reading_script_file = false;
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2030 }
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2031
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2032 if (! (reading_fcn_file || reading_script_file
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2033 || reading_classdef_file))
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2034 input_line_number = 1;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2035 break;
1497
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe]
jwe
parents: 1489
diff changeset
2036
3174
390d5e396682 [project @ 1998-05-04 16:36:17 by jwe]
jwe
parents: 3165
diff changeset
2037 case magic_file_kw:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2038 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2039 if ((reading_fcn_file || reading_script_file
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2040 || reading_classdef_file)
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2041 && ! fcn_file_full_name.empty ())
16267
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
2042 tok_val = new token (magic_file_kw, true,
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
2043 fcn_file_full_name, l, c);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2044 else
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2045 tok_val = new token (magic_file_kw, "stdin", l, c);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2046 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2047 break;
3174
390d5e396682 [project @ 1998-05-04 16:36:17 by jwe]
jwe
parents: 3165
diff changeset
2048
390d5e396682 [project @ 1998-05-04 16:36:17 by jwe]
jwe
parents: 3165
diff changeset
2049 case magic_line_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2050 tok_val = new token (magic_line_kw, static_cast<double> (l),
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2051 "", l, c);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2052 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2053
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2054 default:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2055 panic_impossible ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2056 }
1497
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe]
jwe
parents: 1489
diff changeset
2057
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2058 if (! tok_val)
16267
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
2059 tok_val = new token (kw->tok, true, l, c);
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2060
16148
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
2061 push_token (tok_val);
1497
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe]
jwe
parents: 1489
diff changeset
2062
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe]
jwe
parents: 1489
diff changeset
2063 return kw->tok;
143
7849db4b6dbc [project @ 1993-10-04 02:36:45 by jwe]
jwe
parents: 120
diff changeset
2064 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
2065
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
2066 return 0;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
2067 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
2068
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2069 bool
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2070 octave_base_lexer::whitespace_is_significant (void)
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2071 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2072 return (nesting_level.is_bracket ()
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2073 || (nesting_level.is_brace ()
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2074 && ! looking_at_object_index.front ()));
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2075 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2076
3220
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2077 static inline bool
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2078 looks_like_hex (const char *s, int len)
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2079 {
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2080 return (len > 2 && s[0] == '0' && (s[1] == 'x' || s[1] == 'X'));
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2081 }
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2082
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2083 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2084 octave_base_lexer::handle_number (void)
972
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe]
jwe
parents: 971
diff changeset
2085 {
3220
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2086 double value = 0.0;
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2087 int nread = 0;
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2088
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2089 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2090
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2091 if (looks_like_hex (yytxt, strlen (yytxt)))
3220
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2092 {
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2093 unsigned long ival;
3598
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2094
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2095 nread = sscanf (yytxt, "%lx", &ival);
3598
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2096
3220
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2097 value = static_cast<double> (ival);
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2098 }
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2099 else
3598
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2100 {
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2101 char *tmp = strsave (yytxt);
3598
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2102
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2103 char *idx = strpbrk (tmp, "Dd");
2621
337a09dd1c06 [project @ 1997-01-24 21:49:41 by jwe]
jwe
parents: 2614
diff changeset
2104
3598
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2105 if (idx)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2106 *idx = 'e';
3598
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2107
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2108 nread = sscanf (tmp, "%lf", &value);
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2109
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2110 delete [] tmp;
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2111 }
972
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe]
jwe
parents: 971
diff changeset
2112
1826
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe]
jwe
parents: 1823
diff changeset
2113 // If yytext doesn't contain a valid number, we are in deep doo doo.
985
4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe]
jwe
parents: 975
diff changeset
2114
972
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe]
jwe
parents: 971
diff changeset
2115 assert (nread == 1);
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe]
jwe
parents: 971
diff changeset
2116
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2117 looking_for_object_index = false;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2118 at_beginning_of_statement = false;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2119
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2120 push_token (new token (NUM, value, yytxt, input_line_number,
16148
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
2121 current_input_column));
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2122
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
2123 current_input_column += flex_yyleng ();
972
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe]
jwe
parents: 971
diff changeset
2124 }
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe]
jwe
parents: 971
diff changeset
2125
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2126 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2127 octave_base_lexer::handle_continuation (void)
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2128 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2129 char *yytxt = flex_yytext ();
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2130 int yylng = flex_yyleng ();
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2131
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2132 int offset = 1;
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2133 if (yytxt[0] == '\\')
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2134 gripe_matlab_incompatible_continuation ();
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2135 else
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2136 offset = 3;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2137
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2138 bool have_space = false;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2139 while (offset < yylng)
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2140 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2141 char c = yytxt[offset];
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2142 if (c == ' ' || c == '\t')
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2143 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2144 have_space = true;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2145 offset++;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2146 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2147 else
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2148 break;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2149 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2150
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2151 if (have_space)
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2152 mark_previous_token_trailing_space ();
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2153
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2154 bool have_comment = false;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2155 while (offset < yylng)
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2156 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2157 char c = yytxt[offset];
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2158 if (c == '#' || c == '%')
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2159 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2160 have_comment = true;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2161 offset++;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2162 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2163 else
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2164 break;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2165 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2166
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2167 if (have_comment)
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2168 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2169 comment_text = &yytxt[offset];
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2170
16337
6bfd8dbd7d3c don't swallow statements that follow comment lines (bug #38549)
John W. Eaton <jwe@octave.org>
parents: 16334
diff changeset
2171 finish_comment (octave_comment_elt::end_of_line);
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2172 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2173
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2174 decrement_promptflag ();
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2175 input_line_number++;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2176 current_input_column = 1;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2177 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2178
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2179 void
16337
6bfd8dbd7d3c don't swallow statements that follow comment lines (bug #38549)
John W. Eaton <jwe@octave.org>
parents: 16334
diff changeset
2180 octave_base_lexer::finish_comment (octave_comment_elt::comment_type typ)
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2181 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2182 bool copyright = looks_like_copyright (comment_text);
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2183
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2184 if (nesting_level.none () && help_text.empty ()
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2185 && ! comment_text.empty () && ! copyright)
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2186 help_text = comment_text;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2187
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2188 if (copyright)
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2189 typ = octave_comment_elt::copyright;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2190
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2191 octave_comment_buffer::append (comment_text, typ);
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2192
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2193 comment_text = "";
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2194
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2195 at_beginning_of_statement = true;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2196 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2197
1001
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe]
jwe
parents: 991
diff changeset
2198 // We have seen a backslash and need to find out if it should be
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe]
jwe
parents: 991
diff changeset
2199 // treated as a continuation character. If so, this eats it, up to
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe]
jwe
parents: 991
diff changeset
2200 // and including the new line character.
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe]
jwe
parents: 991
diff changeset
2201 //
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2202 // Match whitespace only, followed by a comment character or newline.
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2203 // Once a comment character is found, discard all input until newline.
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2204 // If non-whitespace characters are found before comment
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2205 // characters, return 0. Otherwise, return 1.
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2206
7723
74f5e0c7de9e first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents: 7722
diff changeset
2207 // FIXME -- we need to handle block comments here.
74f5e0c7de9e first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents: 7722
diff changeset
2208
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2209 bool
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2210 octave_base_lexer::have_continuation (bool trailing_comments_ok)
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2211 {
5765
7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe]
jwe
parents: 5615
diff changeset
2212 std::ostringstream buf;
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2213
3665
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe]
jwe
parents: 3598
diff changeset
2214 std::string comment_buf;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe]
jwe
parents: 3598
diff changeset
2215
2857
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe]
jwe
parents: 2856
diff changeset
2216 bool in_comment = false;
3665
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe]
jwe
parents: 3598
diff changeset
2217 bool beginning_of_comment = false;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe]
jwe
parents: 3598
diff changeset
2218
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe]
jwe
parents: 3598
diff changeset
2219 int c = 0;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe]
jwe
parents: 3598
diff changeset
2220
7728
13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser
John W. Eaton <jwe@octave.org>
parents: 7723
diff changeset
2221 while ((c = text_yyinput ()) != EOF)
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2222 {
3802
4f1a26a730fd [project @ 2001-02-26 20:26:14 by jwe]
jwe
parents: 3796
diff changeset
2223 buf << static_cast<char> (c);
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2224
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2225 switch (c)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2226 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2227 case ' ':
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2228 case '\t':
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2229 if (in_comment)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2230 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2231 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2232 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2233 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2234 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2235
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2236 case '%':
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2237 case '#':
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2238 if (trailing_comments_ok)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2239 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2240 if (in_comment)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2241 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2242 if (! beginning_of_comment)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2243 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2244 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2245 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2246 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2247 maybe_gripe_matlab_incompatible_comment (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2248 in_comment = true;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2249 beginning_of_comment = true;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2250 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2251 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2252 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2253 goto cleanup;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2254 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2255
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2256 case '\n':
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2257 if (in_comment)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2258 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2259 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2260 octave_comment_buffer::append (comment_buf);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2261 }
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2262 current_input_column = 0;
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
2263 decrement_promptflag ();
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2264 gripe_matlab_incompatible_continuation ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2265 return true;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2266
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2267 default:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2268 if (in_comment)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2269 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2270 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2271 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2272 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2273 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2274 goto cleanup;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2275 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2276 }
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2277 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2278
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2279 xunput (c);
2857
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe]
jwe
parents: 2856
diff changeset
2280 return false;
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2281
3096
ff8b4d6371b3 [project @ 1997-11-14 07:59:14 by jwe]
jwe
parents: 3079
diff changeset
2282 cleanup:
4051
b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe]
jwe
parents: 4037
diff changeset
2283
5765
7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe]
jwe
parents: 5615
diff changeset
2284 std::string s = buf.str ();
4051
b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe]
jwe
parents: 4037
diff changeset
2285
b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe]
jwe
parents: 4037
diff changeset
2286 int len = s.length ();
b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe]
jwe
parents: 4037
diff changeset
2287 while (len--)
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2288 xunput (s[len]);
3096
ff8b4d6371b3 [project @ 1997-11-14 07:59:14 by jwe]
jwe
parents: 3079
diff changeset
2289
2857
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe]
jwe
parents: 2856
diff changeset
2290 return false;
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2291 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2292
15466
d174210ce1ec use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents: 14161
diff changeset
2293 // We have seen a '.' and need to see if it is the start of a
1001
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe]
jwe
parents: 991
diff changeset
2294 // continuation. If so, this eats it, up to and including the new
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe]
jwe
parents: 991
diff changeset
2295 // line character.
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe]
jwe
parents: 991
diff changeset
2296
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2297 bool
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2298 octave_base_lexer::have_ellipsis_continuation (bool trailing_comments_ok)
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2299 {
7728
13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser
John W. Eaton <jwe@octave.org>
parents: 7723
diff changeset
2300 char c1 = text_yyinput ();
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2301 if (c1 == '.')
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2302 {
7728
13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser
John W. Eaton <jwe@octave.org>
parents: 7723
diff changeset
2303 char c2 = text_yyinput ();
1091
54abf1b3a8e9 [project @ 1995-02-02 00:30:14 by jwe]
jwe
parents: 1088
diff changeset
2304 if (c2 == '.' && have_continuation (trailing_comments_ok))
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2305 return true;
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2306 else
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2307 {
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2308 xunput (c2);
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2309 xunput (c1);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2310 }
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2311 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2312 else
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2313 xunput (c1);
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2314
2857
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe]
jwe
parents: 2856
diff changeset
2315 return false;
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2316 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2317
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2318 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2319 octave_base_lexer::handle_string (char delim)
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2320 {
5765
7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe]
jwe
parents: 5615
diff changeset
2321 std::ostringstream buf;
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2322
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2323 int bos_line = input_line_number;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2324 int bos_col = current_input_column;
3805
44386b0e53da [project @ 2001-03-01 16:54:31 by jwe]
jwe
parents: 3802
diff changeset
2325
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2326 int c;
1031
59f5eb2d5eb3 [project @ 1995-01-15 21:11:11 by jwe]
jwe
parents: 1019
diff changeset
2327 int escape_pending = 0;
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2328
7728
13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser
John W. Eaton <jwe@octave.org>
parents: 7723
diff changeset
2329 while ((c = text_yyinput ()) != EOF)
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2330 {
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2331 current_input_column++;
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2332
3105
f936c7f5074f [project @ 1997-11-19 04:36:17 by jwe]
jwe
parents: 3103
diff changeset
2333 if (c == '\\')
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2334 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2335 if (delim == '\'' || escape_pending)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2336 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2337 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2338 escape_pending = 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2339 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2340 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2341 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2342 if (have_continuation (false))
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2343 escape_pending = 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2344 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2345 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2346 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2347 escape_pending = 1;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2348 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2349 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2350 continue;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2351 }
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2352 else if (c == '.')
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2353 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2354 if (delim == '\'' || ! have_ellipsis_continuation (false))
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2355 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2356 }
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2357 else if (c == '\n')
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2358 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2359 error ("unterminated string constant");
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2360 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2361 }
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2362 else if (c == delim)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2363 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2364 if (escape_pending)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2365 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2366 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2367 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2368 c = text_yyinput ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2369 if (c == delim)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2370 {
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2371 buf << static_cast<char> (c);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2372 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2373 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2374 {
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2375 std::string s;
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2376 xunput (c);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2377
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2378 if (delim == '\'')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2379 s = buf.str ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2380 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2381 s = do_string_escapes (buf.str ());
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2382
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2383 if (delim == '"')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2384 gripe_matlab_incompatible ("\" used as string delimiter");
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2385 else if (delim == '\'')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2386 gripe_single_quote_string ();
3400
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe]
jwe
parents: 3388
diff changeset
2387
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2388 looking_for_object_index = true;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2389 at_beginning_of_statement = false;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2390
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2391 int tok = delim == '"' ? DQ_STRING : SQ_STRING;
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2392
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2393 push_token (new token (tok, s, bos_line, bos_col));
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2394
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2395 return tok;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2396 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2397 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2398 }
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2399 else
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2400 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2401 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2402 }
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2403
1031
59f5eb2d5eb3 [project @ 1995-01-15 21:11:11 by jwe]
jwe
parents: 1019
diff changeset
2404 escape_pending = 0;
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2405 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2406
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2407 return LEXICAL_ERROR;
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2408 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2409
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2410 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2411 octave_base_lexer::handle_close_bracket (int bracket_type)
971
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
2412 {
4612
d44675070f1a [project @ 2003-11-14 19:49:56 by jwe]
jwe
parents: 4608
diff changeset
2413 int retval = bracket_type;
3208
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe]
jwe
parents: 3204
diff changeset
2414
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2415 if (! nesting_level.none ())
971
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
2416 {
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2417 nesting_level.remove ();
4613
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe]
jwe
parents: 4612
diff changeset
2418
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe]
jwe
parents: 4612
diff changeset
2419 if (bracket_type == ']')
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2420 bracketflag--;
4613
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe]
jwe
parents: 4612
diff changeset
2421 else if (bracket_type == '}')
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2422 braceflag--;
4613
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe]
jwe
parents: 4612
diff changeset
2423 else
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2424 panic_impossible ();
971
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
2425 }
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
2426
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2427 pop_start_state ();
1001
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe]
jwe
parents: 991
diff changeset
2428
3208
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe]
jwe
parents: 3204
diff changeset
2429 return retval;
971
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
2430 }
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
2431
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2432 bool
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2433 octave_base_lexer::looks_like_command_arg (void)
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2434 {
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
2435 bool space_before = space_follows_previous_token ();
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
2436 bool space_after = looking_at_space ();
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
2437
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
2438 return (space_before && ! space_after
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
2439 && previous_token_may_be_command ());
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2440 }
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2441
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2442 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2443 octave_base_lexer::handle_superclass_identifier (void)
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2444 {
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2445 std::string pkg;
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2446 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2447 std::string meth = strip_trailing_whitespace (yytxt);
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2448 size_t pos = meth.find ("@");
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2449 std::string cls = meth.substr (pos).substr (1);
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2450 meth = meth.substr (0, pos - 1);
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2451
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2452 pos = cls.find (".");
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2453 if (pos != std::string::npos)
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2454 {
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2455 pkg = cls.substr (pos).substr (1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2456 cls = cls.substr (0, pos - 1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2457 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2458
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2459 int kw_token = (is_keyword_token (meth) || is_keyword_token (cls)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2460 || is_keyword_token (pkg));
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2461 if (kw_token)
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2462 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2463 error ("method, class and package names may not be keywords");
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2464 return LEXICAL_ERROR;
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2465 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2466
16320
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
2467 symbol_table::scope_id sid = symtab_context.curr_scope ();
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
2468
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
2469 push_token (new token
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
2470 (SUPERCLASSREF,
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
2471 meth.empty () ? 0 : &(symbol_table::insert (meth, sid)),
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
2472 cls.empty () ? 0 : &(symbol_table::insert (cls, sid)),
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
2473 pkg.empty () ? 0 : &(symbol_table::insert (pkg, sid)),
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
2474 input_line_number, current_input_column));
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2475
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
2476 current_input_column += flex_yyleng ();
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2477
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2478 return SUPERCLASSREF;
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2479 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2480
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2481 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2482 octave_base_lexer::handle_meta_identifier (void)
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2483 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2484 std::string pkg;
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2485 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2486 std::string cls = strip_trailing_whitespace (yytxt).substr (1);
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2487 size_t pos = cls.find (".");
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2488
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2489 if (pos != std::string::npos)
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2490 {
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2491 pkg = cls.substr (pos).substr (1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2492 cls = cls.substr (0, pos - 1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2493 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2494
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2495 int kw_token = is_keyword_token (cls) || is_keyword_token (pkg);
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2496 if (kw_token)
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2497 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2498 error ("class and package names may not be keywords");
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2499 return LEXICAL_ERROR;
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2500 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2501
16320
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
2502 symbol_table::scope_id sid = symtab_context.curr_scope ();
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
2503
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
2504 push_token (new token
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
2505 (METAQUERY,
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
2506 cls.empty () ? 0 : &(symbol_table::insert (cls, sid)),
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
2507 pkg.empty () ? 0 : &(symbol_table::insert (pkg, sid)),
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
2508 input_line_number, current_input_column));
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2509
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
2510 current_input_column += flex_yyleng ();
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2511
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2512 return METAQUERY;
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2513 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2514
767
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe]
jwe
parents: 747
diff changeset
2515 // Figure out exactly what kind of token to return when we have seen
4238
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe]
jwe
parents: 4237
diff changeset
2516 // an identifier. Handles keywords. Return -1 if the identifier
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe]
jwe
parents: 4237
diff changeset
2517 // should be ignored.
767
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe]
jwe
parents: 747
diff changeset
2518
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2519 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2520 octave_base_lexer::handle_identifier (void)
146
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
2521 {
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2522 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2523
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2524 std::string tok = yytxt;
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2525
2970
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe]
jwe
parents: 2926
diff changeset
2526 // If we are expecting a structure element, avoid recognizing
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe]
jwe
parents: 2926
diff changeset
2527 // keywords and other special names and return STRUCT_ELT, which is
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe]
jwe
parents: 2926
diff changeset
2528 // a string that is also a valid identifier. But first, we have to
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe]
jwe
parents: 2926
diff changeset
2529 // decide whether to insert a comma.
747
6182de8cb3b7 [project @ 1994-09-30 15:09:36 by jwe]
jwe
parents: 661
diff changeset
2530
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2531 if (looking_at_indirect_ref)
1072
0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe]
jwe
parents: 1060
diff changeset
2532 {
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2533 push_token (new token (STRUCT_ELT, tok, input_line_number,
16148
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
2534 current_input_column));
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2535
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2536 looking_for_object_index = true;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2537
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
2538 current_input_column += flex_yyleng ();
2819
ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe]
jwe
parents: 2804
diff changeset
2539
2970
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe]
jwe
parents: 2926
diff changeset
2540 return STRUCT_ELT;
1072
0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe]
jwe
parents: 1060
diff changeset
2541 }
747
6182de8cb3b7 [project @ 1994-09-30 15:09:36 by jwe]
jwe
parents: 661
diff changeset
2542
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2543 // The is_keyword_token may reset
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2544 // at_beginning_of_statement. For example, if it sees
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2545 // an else token, then the next token is at the beginning of a
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2546 // statement.
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2547
16271
87069bd38107 8/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16269
diff changeset
2548 // May set at_beginning_of_statement to true.
4930
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe]
jwe
parents: 4923
diff changeset
2549 int kw_token = is_keyword_token (tok);
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe]
jwe
parents: 4923
diff changeset
2550
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2551 // If we found a keyword token, then the beginning_of_statement flag
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2552 // is already set. Otherwise, we won't be at the beginning of a
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2553 // statement.
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2554
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2555 if (looking_at_function_handle)
4930
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe]
jwe
parents: 4923
diff changeset
2556 {
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe]
jwe
parents: 4923
diff changeset
2557 if (kw_token)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2558 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2559 error ("function handles may not refer to keywords");
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2560
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2561 return LEXICAL_ERROR;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2562 }
4930
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe]
jwe
parents: 4923
diff changeset
2563 else
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2564 {
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2565 push_token (new token (FCN_HANDLE, tok, input_line_number,
16148
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
2566 current_input_column));
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2567
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
2568 current_input_column += flex_yyleng ();
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2569 looking_for_object_index = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2570
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2571 at_beginning_of_statement = false;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2572
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2573 return FCN_HANDLE;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2574 }
4930
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe]
jwe
parents: 4923
diff changeset
2575 }
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe]
jwe
parents: 4923
diff changeset
2576
5102
b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe]
jwe
parents: 5088
diff changeset
2577 // If we have a regular keyword, return it.
7722
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents: 7720
diff changeset
2578 // Keywords can be followed by identifiers.
146
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
2579
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
2580 if (kw_token)
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
2581 {
7722
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents: 7720
diff changeset
2582 if (kw_token >= 0)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2583 {
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
2584 current_input_column += flex_yyleng ();
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2585 looking_for_object_index = false;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2586 }
7722
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents: 7720
diff changeset
2587
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents: 7720
diff changeset
2588 return kw_token;
146
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
2589 }
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
2590
4234
90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe]
jwe
parents: 4233
diff changeset
2591 // Find the token in the symbol table. Beware the magic
90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe]
jwe
parents: 4233
diff changeset
2592 // transformation of the end keyword...
90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe]
jwe
parents: 4233
diff changeset
2593
90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe]
jwe
parents: 4233
diff changeset
2594 if (tok == "end")
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2595 tok = "__end__";
146
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
2596
16320
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
2597 symbol_table::scope_id sid = symtab_context.curr_scope ();
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
2598
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16309
diff changeset
2599 token *tok_val = new token (NAME, &(symbol_table::insert (tok, sid)),
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2600 input_line_number, current_input_column);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2601
16269
488b0fef52c5 7/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16267
diff changeset
2602 if (at_beginning_of_statement
16360
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
2603 && (! (is_variable (tok)
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
2604 || tok == "e"
16269
488b0fef52c5 7/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16267
diff changeset
2605 || tok == "I" || tok == "i"
488b0fef52c5 7/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16267
diff changeset
2606 || tok == "J" || tok == "j"
488b0fef52c5 7/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16267
diff changeset
2607 || tok == "Inf" || tok == "inf"
488b0fef52c5 7/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16267
diff changeset
2608 || tok == "NaN" || tok == "nan")))
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2609 tok_val->mark_may_be_command ();
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2610
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2611 push_token (tok_val);
146
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
2612
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
2613 current_input_column += flex_yyleng ();
146
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
2614
9324
29563379fa9b don't look for object index after keyword
John W. Eaton <jwe@octave.org>
parents: 8974
diff changeset
2615 if (tok != "__end__")
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2616 looking_for_object_index = true;
9324
29563379fa9b don't look for object index after keyword
John W. Eaton <jwe@octave.org>
parents: 8974
diff changeset
2617
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2618 at_beginning_of_statement = false;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2619
146
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
2620 return NAME;
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
2621 }
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
2622
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2623 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2624 octave_base_lexer::maybe_warn_separator_insert (char sep)
3388
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe]
jwe
parents: 3351
diff changeset
2625 {
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2626 std::string nm = fcn_file_full_name;
3388
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe]
jwe
parents: 3351
diff changeset
2627
5794
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5783
diff changeset
2628 if (nm.empty ())
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5783
diff changeset
2629 warning_with_id ("Octave:separator-insert",
15466
d174210ce1ec use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents: 14161
diff changeset
2630 "potential auto-insertion of '%c' near line %d",
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2631 sep, input_line_number);
5794
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5783
diff changeset
2632 else
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5783
diff changeset
2633 warning_with_id ("Octave:separator-insert",
15466
d174210ce1ec use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents: 14161
diff changeset
2634 "potential auto-insertion of '%c' near line %d of file %s",
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2635 sep, input_line_number, nm.c_str ());
3388
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe]
jwe
parents: 3351
diff changeset
2636 }
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe]
jwe
parents: 3351
diff changeset
2637
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2638 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2639 octave_base_lexer::gripe_single_quote_string (void)
3400
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe]
jwe
parents: 3388
diff changeset
2640 {
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2641 std::string nm = fcn_file_full_name;
3400
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe]
jwe
parents: 3388
diff changeset
2642
5794
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5783
diff changeset
2643 if (nm.empty ())
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5783
diff changeset
2644 warning_with_id ("Octave:single-quote-string",
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2645 "single quote delimited string near line %d",
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2646 input_line_number);
5794
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5783
diff changeset
2647 else
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5783
diff changeset
2648 warning_with_id ("Octave:single-quote-string",
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2649 "single quote delimited string near line %d of file %s",
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2650 input_line_number, nm.c_str ());
3400
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe]
jwe
parents: 3388
diff changeset
2651 }
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe]
jwe
parents: 3388
diff changeset
2652
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2653 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2654 octave_base_lexer::gripe_matlab_incompatible (const std::string& msg)
4037
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2655 {
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2656 std::string nm = fcn_file_full_name;
8974
fde2a916b2ac include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents: 8950
diff changeset
2657
fde2a916b2ac include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents: 8950
diff changeset
2658 if (nm.empty ())
fde2a916b2ac include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents: 8950
diff changeset
2659 warning_with_id ("Octave:matlab-incompatible",
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2660 "potential Matlab compatibility problem: %s",
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2661 msg.c_str ());
8974
fde2a916b2ac include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents: 8950
diff changeset
2662 else
fde2a916b2ac include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents: 8950
diff changeset
2663 warning_with_id ("Octave:matlab-incompatible",
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2664 "potential Matlab compatibility problem: %s near line %d offile %s",
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2665 msg.c_str (), input_line_number, nm.c_str ());
4037
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2666 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2667
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2668 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2669 octave_base_lexer::maybe_gripe_matlab_incompatible_comment (char c)
4037
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2670 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2671 if (c == '#')
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2672 gripe_matlab_incompatible ("# used as comment character");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2673 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2674
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2675 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2676 octave_base_lexer::gripe_matlab_incompatible_continuation (void)
4037
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2677 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2678 gripe_matlab_incompatible ("\\ used as line continuation marker");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2679 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2680
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2681 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2682 octave_base_lexer::gripe_matlab_incompatible_operator (const std::string& op)
4037
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2683 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2684 std::string t = op;
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2685 int n = t.length ();
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2686 if (t[n-1] == '\n')
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2687 t.resize (n-1);
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2688 gripe_matlab_incompatible (t + " used as operator");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
2689 }
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2690
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2691 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2692 octave_base_lexer::push_token (token *tok)
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2693 {
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
2694 YYSTYPE *lval = yyget_lval (scanner);
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
2695 lval->tok_val = tok;
16230
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
2696 tokens.push (tok);
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2697 }
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2698
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2699 token *
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2700 octave_base_lexer::current_token (void)
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2701 {
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
2702 YYSTYPE *lval = yyget_lval (scanner);
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
2703 return lval->tok_val;
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2704 }
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2705
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2706 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2707 octave_base_lexer::display_token (int tok)
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2708 {
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2709 switch (tok)
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2710 {
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2711 case '=': std::cerr << "'='\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2712 case ':': std::cerr << "':'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2713 case '-': std::cerr << "'-'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2714 case '+': std::cerr << "'+'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2715 case '*': std::cerr << "'*'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2716 case '/': std::cerr << "'/'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2717 case ADD_EQ: std::cerr << "ADD_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2718 case SUB_EQ: std::cerr << "SUB_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2719 case MUL_EQ: std::cerr << "MUL_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2720 case DIV_EQ: std::cerr << "DIV_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2721 case LEFTDIV_EQ: std::cerr << "LEFTDIV_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2722 case POW_EQ: std::cerr << "POW_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2723 case EMUL_EQ: std::cerr << "EMUL_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2724 case EDIV_EQ: std::cerr << "EDIV_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2725 case ELEFTDIV_EQ: std::cerr << "ELEFTDIV_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2726 case EPOW_EQ: std::cerr << "EPOW_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2727 case AND_EQ: std::cerr << "AND_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2728 case OR_EQ: std::cerr << "OR_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2729 case LSHIFT_EQ: std::cerr << "LSHIFT_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2730 case RSHIFT_EQ: std::cerr << "RSHIFT_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2731 case LSHIFT: std::cerr << "LSHIFT\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2732 case RSHIFT: std::cerr << "RSHIFT\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2733 case EXPR_AND_AND: std::cerr << "EXPR_AND_AND\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2734 case EXPR_OR_OR: std::cerr << "EXPR_OR_OR\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2735 case EXPR_AND: std::cerr << "EXPR_AND\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2736 case EXPR_OR: std::cerr << "EXPR_OR\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2737 case EXPR_NOT: std::cerr << "EXPR_NOT\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2738 case EXPR_LT: std::cerr << "EXPR_LT\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2739 case EXPR_LE: std::cerr << "EXPR_LE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2740 case EXPR_EQ: std::cerr << "EXPR_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2741 case EXPR_NE: std::cerr << "EXPR_NE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2742 case EXPR_GE: std::cerr << "EXPR_GE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2743 case EXPR_GT: std::cerr << "EXPR_GT\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2744 case LEFTDIV: std::cerr << "LEFTDIV\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2745 case EMUL: std::cerr << "EMUL\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2746 case EDIV: std::cerr << "EDIV\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2747 case ELEFTDIV: std::cerr << "ELEFTDIV\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2748 case EPLUS: std::cerr << "EPLUS\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2749 case EMINUS: std::cerr << "EMINUS\n"; break;
16284
09881dab3aaf * lex.ll, oct-parse.in.yy (HERMITIAN): Rename token from QUOTE.
John W. Eaton <jwe@octave.org>
parents: 16283
diff changeset
2750 case HERMITIAN: std::cerr << "HERMITIAN\n"; break;
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2751 case TRANSPOSE: std::cerr << "TRANSPOSE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2752 case PLUS_PLUS: std::cerr << "PLUS_PLUS\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2753 case MINUS_MINUS: std::cerr << "MINUS_MINUS\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2754 case POW: std::cerr << "POW\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2755 case EPOW: std::cerr << "EPOW\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2756
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2757 case NUM:
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2758 case IMAG_NUM:
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2759 {
16148
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
2760 token *tok_val = current_token ();
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2761 std::cerr << (tok == NUM ? "NUM" : "IMAG_NUM")
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2762 << " [" << tok_val->number () << "]\n";
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2763 }
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2764 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2765
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2766 case STRUCT_ELT:
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2767 {
16148
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
2768 token *tok_val = current_token ();
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2769 std::cerr << "STRUCT_ELT [" << tok_val->text () << "]\n";
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2770 }
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2771 break;
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2772
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2773 case NAME:
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2774 {
16148
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
2775 token *tok_val = current_token ();
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2776 symbol_table::symbol_record *sr = tok_val->sym_rec ();
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2777 std::cerr << "NAME";
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2778 if (sr)
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2779 std::cerr << " [" << sr->name () << "]";
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2780 std::cerr << "\n";
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2781 }
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2782 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2783
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2784 case END: std::cerr << "END\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2785
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2786 case DQ_STRING:
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2787 case SQ_STRING:
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2788 {
16148
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
2789 token *tok_val = current_token ();
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2790
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2791 std::cerr << (tok == DQ_STRING ? "DQ_STRING" : "SQ_STRING")
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2792 << " [" << tok_val->text () << "]\n";
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2793 }
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2794 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2795
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2796 case FOR: std::cerr << "FOR\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2797 case WHILE: std::cerr << "WHILE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2798 case DO: std::cerr << "DO\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2799 case UNTIL: std::cerr << "UNTIL\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2800 case IF: std::cerr << "IF\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2801 case ELSEIF: std::cerr << "ELSEIF\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2802 case ELSE: std::cerr << "ELSE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2803 case SWITCH: std::cerr << "SWITCH\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2804 case CASE: std::cerr << "CASE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2805 case OTHERWISE: std::cerr << "OTHERWISE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2806 case BREAK: std::cerr << "BREAK\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2807 case CONTINUE: std::cerr << "CONTINUE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2808 case FUNC_RET: std::cerr << "FUNC_RET\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2809 case UNWIND: std::cerr << "UNWIND\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2810 case CLEANUP: std::cerr << "CLEANUP\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2811 case TRY: std::cerr << "TRY\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2812 case CATCH: std::cerr << "CATCH\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2813 case GLOBAL: std::cerr << "GLOBAL\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2814 case PERSISTENT: std::cerr << "PERSISTENT\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2815 case FCN_HANDLE: std::cerr << "FCN_HANDLE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2816 case END_OF_INPUT: std::cerr << "END_OF_INPUT\n\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2817 case LEXICAL_ERROR: std::cerr << "LEXICAL_ERROR\n\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2818 case FCN: std::cerr << "FCN\n"; break;
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2819 case INPUT_FILE: std::cerr << "INPUT_FILE\n"; break;
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2820 case SUPERCLASSREF: std::cerr << "SUPERCLASSREF\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2821 case METAQUERY: std::cerr << "METAQUERY\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2822 case GET: std::cerr << "GET\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2823 case SET: std::cerr << "SET\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2824 case PROPERTIES: std::cerr << "PROPERTIES\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2825 case METHODS: std::cerr << "METHODS\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2826 case EVENTS: std::cerr << "EVENTS\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2827 case CLASSDEF: std::cerr << "CLASSDEF\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2828 case '\n': std::cerr << "\\n\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2829 case '\r': std::cerr << "\\r\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2830 case '\t': std::cerr << "TAB\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2831 default:
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2832 {
16166
cb80b1d062b1 don't attempt to print unprintable tokens
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
2833 if (tok < 256 && tok > 31)
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2834 std::cerr << static_cast<char> (tok) << "\n";
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2835 else
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2836 std::cerr << "UNKNOWN(" << tok << ")\n";
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2837 }
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2838 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2839 }
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2840 }
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2841
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2842 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2843 octave_base_lexer::fatal_error (const char *msg)
16129
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16128
diff changeset
2844 {
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16128
diff changeset
2845 error (msg);
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16128
diff changeset
2846
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16128
diff changeset
2847 OCTAVE_QUIT;
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16128
diff changeset
2848
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
2849 yy_fatal_error (msg, scanner);
16129
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16128
diff changeset
2850 }
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16128
diff changeset
2851
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16128
diff changeset
2852 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2853 octave_base_lexer::lexer_debug (const char *pattern)
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2854 {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2855 if (lexer_debug_flag)
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2856 {
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2857 std::cerr << std::endl;
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2858
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2859 display_start_state ();
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2860
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2861 std::cerr << "P: " << pattern << std::endl;
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2862 std::cerr << "T: " << flex_yytext () << std::endl;
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2863 }
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
2864 }
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2865
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2866 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2867 octave_base_lexer::push_start_state (int state)
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2868 {
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2869 OCTAVE_YYG;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2870
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2871 start_state_stack.push (state);
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2872
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2873 BEGIN (start_state ());
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2874 }
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2875
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2876 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2877 octave_base_lexer::pop_start_state (void)
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2878 {
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2879 OCTAVE_YYG;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2880
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2881 start_state_stack.pop ();
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2882
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2883 BEGIN (start_state ());
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2884 }
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2885
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2886 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2887 octave_base_lexer::clear_start_state (void)
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2888 {
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2889 while (! start_state_stack.empty ())
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2890 start_state_stack.pop ();
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2891
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2892 push_start_state (INITIAL);
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2893 }
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2894
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2895 void
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2896 octave_base_lexer::display_start_state (void) const
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2897 {
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2898 std::cerr << "S: ";
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2899
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2900 switch (start_state ())
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2901 {
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2902 case INITIAL:
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2903 std::cerr << "INITIAL" << std::endl;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2904 break;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2905
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2906 case COMMAND_START:
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2907 std::cerr << "COMMAND_START" << std::endl;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2908 break;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2909
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2910 case MATRIX_START:
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2911 std::cerr << "MATRIX_START" << std::endl;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2912 break;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2913
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2914 case INPUT_FILE_START:
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2915 std::cerr << "INPUT_FILE_BEGIN" << std::endl;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2916 break;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2917
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
2918 case BLOCK_COMMENT_START:
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
2919 std::cerr << "BLOCK_COMMENT_START" << std::endl;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
2920 break;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
2921
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
2922 case LINE_COMMENT_START:
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
2923 std::cerr << "LINE_COMMENT_START" << std::endl;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
2924 break;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
2925
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2926 default:
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2927 std::cerr << "UNKNOWN START STATE!" << std::endl;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2928 break;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2929 }
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2930 }
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2931
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2932 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2933 octave_base_lexer::handle_op (const char *pattern, int tok, bool bos)
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2934 {
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2935 lexer_debug (pattern);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2936
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
2937 return handle_op_internal (tok, bos, true);
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2938 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2939
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2940 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2941 octave_base_lexer::handle_incompatible_op (const char *pattern, int tok,
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2942 bool bos)
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2943 {
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2944 lexer_debug (pattern);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2945
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
2946 return handle_op_internal (tok, bos, false);
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2947 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2948
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2949 bool
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2950 octave_base_lexer::maybe_unput_comma_before_unary_op (int tok)
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2951 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2952 int prev_tok = previous_token_value ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2953
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2954 bool unput_comma = false;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2955
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2956 if (whitespace_is_significant () && space_follows_previous_token ())
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2957 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2958 int c = text_yyinput ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2959 xunput (c);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2960
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2961 bool space_after = (c == ' ' || c == '\t');
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2962
16267
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
2963 if (! (prev_tok == '[' || prev_tok == '{'
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2964 || previous_token_is_binop ()
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2965 || ((tok == '+' || tok == '-') && space_after)))
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2966 unput_comma = true;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2967 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2968
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2969 return unput_comma;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2970 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2971
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2972 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2973 octave_base_lexer::handle_unary_op (int tok, bool bos)
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2974 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2975 return maybe_unput_comma_before_unary_op (tok)
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
2976 ? -1 : handle_op_internal (tok, bos, true);
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2977 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2978
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2979 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2980 octave_base_lexer::handle_incompatible_unary_op (int tok, bool bos)
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2981 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2982 return maybe_unput_comma_before_unary_op (tok)
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16273
diff changeset
2983 ? -1 : handle_op_internal (tok, bos, false);
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2984 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2985
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2986 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
2987 octave_base_lexer::handle_op_internal (int tok, bool bos, bool compat)
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2988 {
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2989 if (! compat)
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2990 gripe_matlab_incompatible_operator (flex_yytext ());
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2991
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2992 push_token (new token (tok, input_line_number, current_input_column));
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2993
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2994 current_input_column += flex_yyleng ();
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2995 looking_for_object_index = false;
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2996 at_beginning_of_statement = bos;
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2997
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2998 return count_token (tok);
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
2999 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3000
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3001 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3002 octave_base_lexer::handle_token (const std::string& name, int tok)
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3003 {
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
3004 token *tok_val = new token (tok, name, input_line_number,
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
3005 current_input_column);
16231
2b15ae55c721 put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents: 16230
diff changeset
3006
2b15ae55c721 put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents: 16230
diff changeset
3007 return handle_token (tok, tok_val);
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3008 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3009
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3010 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3011 octave_base_lexer::handle_token (int tok, token *tok_val)
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3012 {
16231
2b15ae55c721 put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents: 16230
diff changeset
3013 if (! tok_val)
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
3014 tok_val = new token (tok, input_line_number, current_input_column);
16231
2b15ae55c721 put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents: 16230
diff changeset
3015
2b15ae55c721 put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents: 16230
diff changeset
3016 push_token (tok_val);
2b15ae55c721 put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents: 16230
diff changeset
3017
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3018 current_input_column += flex_yyleng ();
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3019
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3020 return count_token_internal (tok);
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3021 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3022
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3023 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3024 octave_base_lexer::count_token (int tok)
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3025 {
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3026 token *tok_val = new token (tok, input_line_number, current_input_column);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3027
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3028 push_token (tok_val);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3029
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3030 return count_token_internal (tok);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3031 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3032
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3033 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3034 octave_base_lexer::count_token_internal (int tok)
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3035 {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3036 if (tok != '\n')
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3037 {
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3038 Vtoken_count++;
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3039 token_count++;
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3040 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3041
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3042 return show_token (tok);
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3043 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3044
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3045 int
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3046 octave_base_lexer::show_token (int tok)
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3047 {
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3048 if (Vdisplay_tokens)
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3049 display_token (tok);
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3050
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3051 if (lexer_debug_flag)
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3052 {
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3053 std::cerr << "R: ";
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3054 display_token (tok);
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3055 std::cerr << std::endl;
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3056 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3057
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3058 return tok;
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3059 }
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3060
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3061 int
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3062 octave_lexer::fill_flex_buffer (char *buf, unsigned max_size)
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3063 {
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3064 int status = 0;
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3065
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3066 if (input_buf.empty ())
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3067 {
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3068 bool eof = false;
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3069 current_input_line = input_reader.get_input (eof);
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3070 input_buf.fill (current_input_line, eof);
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3071 }
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3072
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3073 if (! input_buf.empty ())
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3074 status = input_buf.copy_chunk (buf, max_size);
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3075 else
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3076 {
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3077 status = YY_NULL;
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3078
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3079 if (! input_buf.at_eof ())
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3080 fatal_error ("octave_base_lexer::fill_flex_buffer failed");
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3081 }
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3082
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3083 return status;
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
3084 }
16294
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3085
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3086 int
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3087 octave_push_lexer::fill_flex_buffer (char *buf, unsigned max_size)
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3088 {
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3089 int status = 0;
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3090
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3091 if (input_buf.empty () && ! input_buf.at_eof ())
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3092 input_buf.fill (std::string (1, static_cast<char> (1)), false);
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3093
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3094 if (! input_buf.empty ())
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3095 status = input_buf.copy_chunk (buf, max_size);
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3096 else
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3097 {
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3098 status = YY_NULL;
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3099
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3100 if (! input_buf.at_eof ())
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3101 fatal_error ("octave_base_lexer::fill_flex_buffer failed");
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3102 }
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3103
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3104 return status;
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
3105 }