Mercurial > hg > octave-lyh
annotate libinterp/parse-tree/pt-unop.h @ 16253:a89cf57ba3a5
partial cleanup of continuation handling in lexer
* lex.h, lex.ll (octave_lexer::handle_continuation): New function.
(octave_lexer::finish_comment): Move to octave_lexer::finish_comment.
Don't return token. New argument, looking_at_continuation. If not
handling continuation, unput newline character.
(^{S}*{CCHAR}\{{S}*{NL}): Call yyless before finishing comment.
(^{S}*{CCHAR}\{{S}*{NL}, <BLOCK_COMMENT_START>^{S}*{CCHAR}\{{S}*{NL},
<LINE_COMMENT_START>{ANY_INCLUDING_NL},
<LINE_COMMENT_START>{S}*{CCHAR}.*{NL}): Don't return token.
(<LINE_COMMENT_START>{S}*{CCHAR}.*{NL}): Don't give COMMAND_START
start state special treatment.
({CONT}{S}*{NL}|{CONT}{S}*{COMMENT}):
Call octave_lexer::handle_continuation.
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Sat, 09 Mar 2013 21:44:14 -0500 |
| parents | 2fc554ffbc28 |
| children |
| rev | line source |
|---|---|
| 2980 | 1 /* |
| 2 | |
|
14138
72c96de7a403
maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
parents:
11586
diff
changeset
|
3 Copyright (C) 1996-2012 John W. Eaton |
| 2980 | 4 |
| 5 This file is part of Octave. | |
| 6 | |
| 7 Octave is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 7016 | 9 Free Software Foundation; either version 3 of the License, or (at your |
| 10 option) any later version. | |
| 2980 | 11 |
| 12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 7016 | 18 along with Octave; see the file COPYING. If not, see |
| 19 <http://www.gnu.org/licenses/>. | |
| 2980 | 20 |
| 21 */ | |
| 22 | |
| 23 #if !defined (octave_tree_unop_h) | |
| 24 #define octave_tree_unop_h 1 | |
| 25 | |
| 26 #include <string> | |
| 27 | |
| 28 class tree_walker; | |
| 29 | |
| 30 class octave_value; | |
| 31 class octave_value_list; | |
| 32 class octave_lvalue; | |
| 33 | |
| 34 #include "pt-exp.h" | |
| 7336 | 35 #include "symtab.h" |
| 2980 | 36 |
| 37 // Unary expressions. | |
| 38 | |
| 39 class | |
| 40 tree_unary_expression : public tree_expression | |
| 41 { | |
| 42 public: | |
| 43 | |
| 3203 | 44 tree_unary_expression (int l = -1, int c = -1, |
| 10313 | 45 octave_value::unary_op t |
| 46 = octave_value::unknown_unary_op) | |
| 3203 | 47 : tree_expression (l, c), op (0), etype (t) { } |
| 2980 | 48 |
| 3203 | 49 tree_unary_expression (tree_expression *e, int l = -1, int c = -1, |
| 10313 | 50 octave_value::unary_op t |
| 51 = octave_value::unknown_unary_op) | |
| 3203 | 52 : tree_expression (l, c), op (e), etype (t) { } |
| 2980 | 53 |
| 54 ~tree_unary_expression (void) { delete op; } | |
| 55 | |
|
7800
5861b95e9879
support for compound operators, implement trans_mul, mul_trans, herm_mul and mul_herm
Jaroslav Hajek <highegg@gmail.com>
parents:
7767
diff
changeset
|
56 bool is_unary_expression (void) const { return true; } |
|
5861b95e9879
support for compound operators, implement trans_mul, mul_trans, herm_mul and mul_herm
Jaroslav Hajek <highegg@gmail.com>
parents:
7767
diff
changeset
|
57 |
| 4267 | 58 bool has_magic_end (void) const { return (op && op->has_magic_end ()); } |
| 59 | |
| 2980 | 60 tree_expression *operand (void) { return op; } |
| 61 | |
| 3523 | 62 std::string oper (void) const; |
|
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
63 |
| 7087 | 64 octave_value::unary_op op_type (void) const { return etype; } |
| 3203 | 65 |
| 2980 | 66 protected: |
| 67 | |
| 68 // The operand for the expression. | |
| 69 tree_expression *op; | |
| 2988 | 70 |
| 3203 | 71 // The type of the expression. |
| 72 octave_value::unary_op etype; | |
| 73 | |
| 74 private: | |
| 75 | |
| 2988 | 76 // No copying! |
| 77 | |
| 78 tree_unary_expression (const tree_unary_expression&); | |
| 79 | |
| 80 tree_unary_expression& operator = (const tree_unary_expression&); | |
| 2980 | 81 }; |
| 82 | |
| 83 // Prefix expressions. | |
| 84 | |
| 85 class | |
| 86 tree_prefix_expression : public tree_unary_expression | |
| 87 { | |
| 88 public: | |
| 89 | |
| 90 tree_prefix_expression (int l = -1, int c = -1) | |
| 3203 | 91 : tree_unary_expression (l, c, octave_value::unknown_unary_op) { } |
| 2980 | 92 |
| 3195 | 93 tree_prefix_expression (tree_expression *e, int l = -1, int c = -1, |
| 10313 | 94 octave_value::unary_op t |
| 95 = octave_value::unknown_unary_op) | |
| 3203 | 96 : tree_unary_expression (e, l, c, t) { } |
| 2980 | 97 |
| 98 ~tree_prefix_expression (void) { } | |
| 99 | |
| 3933 | 100 bool rvalue_ok (void) const { return true; } |
| 2980 | 101 |
|
8658
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8011
diff
changeset
|
102 octave_value rvalue1 (int nargout = 1); |
| 2980 | 103 |
| 3010 | 104 octave_value_list rvalue (int nargout); |
| 2980 | 105 |
|
7767
71f068b22fcc
scope and context fixes for function handles
John W. Eaton <jwe@octave.org>
parents:
7336
diff
changeset
|
106 tree_expression *dup (symbol_table::scope_id scope, |
| 10313 | 107 symbol_table::context_id context) const; |
| 5861 | 108 |
| 2980 | 109 void accept (tree_walker& tw); |
| 110 | |
| 111 private: | |
| 112 | |
| 2988 | 113 // No copying! |
| 114 | |
| 115 tree_prefix_expression (const tree_prefix_expression&); | |
| 116 | |
| 117 tree_prefix_expression& operator = (const tree_prefix_expression&); | |
| 2980 | 118 }; |
| 119 | |
| 120 // Postfix expressions. | |
| 121 | |
| 122 class | |
| 123 tree_postfix_expression : public tree_unary_expression | |
| 124 { | |
| 125 public: | |
| 126 | |
| 127 tree_postfix_expression (int l = -1, int c = -1) | |
| 3203 | 128 : tree_unary_expression (l, c, octave_value::unknown_unary_op) { } |
| 2980 | 129 |
| 3195 | 130 tree_postfix_expression (tree_expression *e, int l = -1, int c = -1, |
| 10313 | 131 octave_value::unary_op t |
| 132 = octave_value::unknown_unary_op) | |
| 3203 | 133 : tree_unary_expression (e, l, c, t) { } |
| 2980 | 134 |
| 135 ~tree_postfix_expression (void) { } | |
| 136 | |
| 3933 | 137 bool rvalue_ok (void) const { return true; } |
| 2980 | 138 |
|
8658
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8011
diff
changeset
|
139 octave_value rvalue1 (int nargout = 1); |
| 2980 | 140 |
| 141 octave_value_list rvalue (int nargout); | |
| 142 | |
|
7767
71f068b22fcc
scope and context fixes for function handles
John W. Eaton <jwe@octave.org>
parents:
7336
diff
changeset
|
143 tree_expression *dup (symbol_table::scope_id scope, |
| 10313 | 144 symbol_table::context_id context) const; |
| 5861 | 145 |
| 2980 | 146 void accept (tree_walker& tw); |
| 147 | |
| 148 private: | |
| 149 | |
| 2988 | 150 // No copying! |
| 151 | |
| 152 tree_postfix_expression (const tree_postfix_expression&); | |
| 153 | |
| 154 tree_postfix_expression& operator = (const tree_postfix_expression&); | |
| 2980 | 155 }; |
| 156 | |
| 157 #endif |