Mercurial > hg > octave-nkf
annotate libinterp/parse-tree/lex.ll @ 16263:9acb86e6ac90
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author | John W. Eaton <jwe@octave.org> |
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date | Mon, 11 Mar 2013 14:28:11 -0400 |
parents | b45a90cdb0ae |
children | 6077d13ddb3b 71ee3afedb69 |
rev | line source |
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1994 | 1 /* |
1 | 2 |
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3 Copyright (C) 1993-2012 John W. Eaton |
1 | 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. | |
1 | 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/>. | |
1 | 20 |
21 */ | |
22 | |
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23 /* |
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24 We are using the pure parser interface and the reentrant lexer |
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25 interface but the Octave parser and lexer are NOT properly |
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26 reentrant because both still use many global variables. It should be |
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27 safe to create a parser object and call it while anotehr parser |
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28 object is active (to parse a callback function while the main |
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29 interactive parser is waiting for input, for example) if you take |
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30 care to properly save and restore (typically with an unwind_protect |
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31 object) relevant global values before and after the nested call. |
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32 */ |
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33 |
4753 | 34 %option prefix = "octave_" |
16146 | 35 %option noyywrap |
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36 %option reentrant |
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37 %option bison-bridge |
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39 %top { |
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40 #ifdef HAVE_CONFIG_H |
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41 #include <config.h> |
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42 #endif |
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44 } |
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45 |
4208 | 46 %s COMMAND_START |
47 %s MATRIX_START | |
4240 | 48 |
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49 %x INPUT_FILE_START |
1 | 50 |
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51 %x BLOCK_COMMENT_START |
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52 %x LINE_COMMENT_START |
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53 |
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54 %x KLUGE |
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55 |
1 | 56 %{ |
240 | 57 |
1341 | 58 #include <cctype> |
59 #include <cstring> | |
60 | |
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61 #include <iostream> |
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62 #include <set> |
5765 | 63 #include <sstream> |
1823 | 64 #include <string> |
4214 | 65 #include <stack> |
1823 | 66 |
4093 | 67 #include <sys/types.h> |
68 #include <unistd.h> | |
69 | |
2926 | 70 #include "cmd-edit.h" |
4153 | 71 #include "quit.h" |
4910 | 72 #include "lo-mappers.h" |
2926 | 73 |
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74 // These would be alphabetical, but oct-parse.h must be included before |
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75 // oct-gperf.h and oct-parse.h must be included after token.h and the tree |
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76 // class declarations. We can't include oct-parse.h in oct-gperf.h |
1497 | 77 // because it may not be protected to allow it to be included multiple |
78 // times. | |
79 | |
4264 | 80 #include "Cell.h" |
3665 | 81 #include "comment-list.h" |
2181 | 82 #include "defun.h" |
1355 | 83 #include "error.h" |
4910 | 84 #include "gripes.h" |
1351 | 85 #include "input.h" |
1355 | 86 #include "lex.h" |
2891 | 87 #include "ov.h" |
1355 | 88 #include "parse.h" |
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89 #include "parse-private.h" |
2987 | 90 #include "pt-all.h" |
2891 | 91 #include "symtab.h" |
92 #include "token.h" | |
93 #include "toplev.h" | |
1355 | 94 #include "utils.h" |
95 #include "variables.h" | |
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96 #include <oct-parse.h> |
2492 | 97 #include <oct-gperf.h> |
1 | 98 |
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99 #if defined (GNULIB_NAMESPACE) |
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100 // Calls to the following functions appear in the generated output from |
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101 // flex without the namespace tag. Redefine them so we will use them |
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102 // via the gnulib namespace. |
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103 #define fprintf GNULIB_NAMESPACE::fprintf |
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104 #define fwrite GNULIB_NAMESPACE::fwrite |
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105 #define isatty GNULIB_NAMESPACE::isatty |
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106 #define malloc GNULIB_NAMESPACE::malloc |
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107 #define realloc GNULIB_NAMESPACE::realloc |
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108 #endif |
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109 |
2716 | 110 #if ! (defined (FLEX_SCANNER) \ |
111 && defined (YY_FLEX_MAJOR_VERSION) && YY_FLEX_MAJOR_VERSION >= 2 \ | |
112 && defined (YY_FLEX_MINOR_VERSION) && YY_FLEX_MINOR_VERSION >= 5) | |
113 #error lex.l requires flex version 2.5.4 or later | |
114 #endif | |
115 | |
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116 #define YY_EXTRA_TYPE octave_lexer * |
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117 #define curr_lexer yyextra |
4753 | 118 |
119 // Arrange to get input via readline. | |
120 | |
121 #ifdef YY_INPUT | |
122 #undef YY_INPUT | |
123 #endif | |
124 #define YY_INPUT(buf, result, max_size) \ | |
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125 result = curr_lexer->read (buf, max_size) |
4753 | 126 |
127 // Try to avoid crashing out completely on fatal scanner errors. | |
128 | |
129 #ifdef YY_FATAL_ERROR | |
130 #undef YY_FATAL_ERROR | |
131 #endif | |
132 #define YY_FATAL_ERROR(msg) \ | |
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133 (yyget_extra (yyscanner))->fatal_error (msg) |
4753 | 134 |
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135 static bool Vdisplay_tokens = false; |
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136 |
4910 | 137 static unsigned int Vtoken_count = 0; |
138 | |
8535 | 139 // Internal variable for lexer debugging state. |
140 static bool lexer_debug_flag = false; | |
141 | |
146 | 142 // Forward declarations for functions defined at the bottom of this |
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143 // file that are needed inside the lexer actions. |
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144 |
3523 | 145 static std::string strip_trailing_whitespace (char *s); |
1 | 146 |
147 %} | |
148 | |
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149 D [0-9] |
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150 S [ \t] |
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151 NL ((\n)|(\r)|(\r\n)) |
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152 CONT ((\.\.\.)|(\\)) |
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153 Im [iIjJ] |
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154 CCHAR [#%] |
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155 IDENT ([_$a-zA-Z][_$a-zA-Z0-9]*) |
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156 EXPON ([DdEe][+-]?{D}+) |
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157 NUMBER (({D}+\.?{D}*{EXPON}?)|(\.{D}+{EXPON}?)|(0[xX][0-9a-fA-F]+)) |
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158 |
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159 ANY_INCLUDING_NL (.|{NL}) |
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160 |
1 | 161 %% |
162 | |
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163 %{ |
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164 // Make script and function files start with a bogus token. This makes |
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165 // the parser go down a special path. |
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166 %} |
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167 |
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168 <INPUT_FILE_START>{ANY_INCLUDING_NL} { |
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169 curr_lexer->lexer_debug ("<INPUT_FILE_START>{ANY_INCLUDING_NL}"); |
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170 |
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171 curr_lexer->xunput (yytext[0]); |
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172 |
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173 // May be reset later if we see "function" or "classdef" appears |
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174 // as the first token. |
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175 curr_lexer->reading_script_file = true; |
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176 |
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177 curr_lexer->pop_start_state (); |
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178 |
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179 return curr_lexer->show_token (INPUT_FILE); |
4238 | 180 } |
181 | |
968 | 182 %{ |
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183 // Help and other command-style functions. |
968 | 184 %} |
185 | |
4208 | 186 <COMMAND_START>{NL} { |
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187 curr_lexer->lexer_debug ("<COMMAND_START>{NL}"); |
8535 | 188 |
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189 curr_lexer->input_line_number++; |
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190 curr_lexer->current_input_column = 1; |
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191 |
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192 curr_lexer->looking_for_object_index = false; |
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193 curr_lexer->at_beginning_of_statement = true; |
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194 |
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195 curr_lexer->pop_start_state (); |
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196 |
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197 return curr_lexer->count_token ('\n'); |
967 | 198 } |
1 | 199 |
4208 | 200 <COMMAND_START>[\;\,] { |
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201 curr_lexer->lexer_debug ("<COMMAND_START>[\\;\\,]"); |
8535 | 202 |
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203 curr_lexer->looking_for_object_index = false; |
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204 curr_lexer->at_beginning_of_statement = true; |
5102 | 205 |
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206 curr_lexer->pop_start_state (); |
5102 | 207 |
208 if (strcmp (yytext, ",") == 0) | |
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209 return curr_lexer->handle_token (','); |
967 | 210 else |
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211 return curr_lexer->handle_token (';'); |
967 | 212 } |
1 | 213 |
4208 | 214 <COMMAND_START>[\"\'] { |
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215 curr_lexer->lexer_debug ("<COMMAND_START>[\\\"\\']"); |
8535 | 216 |
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217 curr_lexer->at_beginning_of_statement = false; |
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218 |
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219 curr_lexer->current_input_column++; |
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220 int tok = curr_lexer->handle_string (yytext[0]); |
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221 |
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222 return curr_lexer->count_token_internal (tok); |
975 | 223 } |
224 | |
4923 | 225 <COMMAND_START>[^#% \t\r\n\;\,\"\'][^ \t\r\n\;\,]*{S}* { |
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226 curr_lexer->lexer_debug ("<COMMAND_START>[^#% \\t\\r\\n\\;\\,\\\"\\'][^ \\t\\r\\n\\;\\,]*{S}*"); |
8535 | 227 |
3523 | 228 std::string tok = strip_trailing_whitespace (yytext); |
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229 |
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230 curr_lexer->looking_for_object_index = false; |
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231 curr_lexer->at_beginning_of_statement = false; |
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232 |
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233 return curr_lexer->handle_token (tok, SQ_STRING); |
967 | 234 } |
1 | 235 |
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236 <MATRIX_START>{S}* { |
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237 curr_lexer->lexer_debug ("<MATRIX_START>{S}*"); |
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238 |
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239 curr_lexer->mark_previous_token_trailing_space (); |
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240 } |
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241 |
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242 <MATRIX_START>{NL} { |
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243 curr_lexer->lexer_debug ("<MATRIX_START>{NL}"); |
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244 |
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245 int tok = curr_lexer->previous_token_value (); |
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246 |
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247 if (! (tok == ';' || tok == '[' || tok == '{')) |
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248 curr_lexer->xunput (';'); |
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249 } |
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250 |
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251 <KLUGE>@ { |
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252 curr_lexer->lexer_debug ("<KLUGE>@"); |
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253 curr_lexer->pop_start_state (); |
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254 return curr_lexer->count_token (CHOOSE_ASSIGNMENT); |
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255 } |
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256 |
968 | 257 %{ |
1 | 258 // For this and the next two rules, we're looking at ']', and we |
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259 // need to know if the next token is '=' or '=='. |
1 | 260 // |
261 // It would have been so much easier if the delimiters were simply | |
262 // different for the expression on the left hand side of the equals | |
263 // operator. | |
971 | 264 // |
265 // It's also a pain in the ass to decide whether to insert a comma | |
266 // after seeing a ']' character... | |
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267 |
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268 // FIXME -- we need to handle block comments here. |
968 | 269 %} |
270 | |
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271 <MATRIX_START>\] { |
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272 curr_lexer->lexer_debug ("<MATRIX_START>\\]"); |
8535 | 273 |
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274 curr_lexer->looking_at_object_index.pop_front (); |
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275 |
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276 curr_lexer->looking_for_object_index = true; |
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277 curr_lexer->at_beginning_of_statement = false; |
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278 |
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279 int tok_to_return = curr_lexer->handle_close_bracket (']'); |
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280 |
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281 return curr_lexer->count_token (']'); |
4608 | 282 } |
283 | |
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284 %{ |
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285 // FIXME -- we need to handle block comments here. |
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286 %} |
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287 |
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288 <MATRIX_START>\} { |
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289 curr_lexer->lexer_debug ("<MATRIX_START>\\}*"); |
8535 | 290 |
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291 curr_lexer->looking_at_object_index.pop_front (); |
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292 |
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293 curr_lexer->looking_for_object_index = true; |
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294 curr_lexer->at_beginning_of_statement = false; |
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295 |
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296 int tok_to_return = curr_lexer->handle_close_bracket ('}'); |
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297 |
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298 return curr_lexer->count_token ('}'); |
967 | 299 } |
1 | 300 |
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301 \[ { |
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302 curr_lexer->lexer_debug ("\\["); |
8535 | 303 |
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304 bool unput_comma = false; |
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305 |
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306 if (curr_lexer->whitespace_is_significant () |
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307 && curr_lexer->space_follows_previous_token ()) |
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308 { |
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309 int tok = curr_lexer->previous_token_value (); |
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310 |
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311 if (! (tok == ';' || tok == ',' || tok == '[' || tok == '{' |
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312 || curr_lexer->previous_token_is_binop ())) |
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313 unput_comma = true; |
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314 } |
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315 |
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316 if (unput_comma) |
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317 { |
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318 yyless (0); |
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319 curr_lexer->xunput (','); |
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320 } |
5615 | 321 else |
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322 { |
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323 curr_lexer->nesting_level.bracket (); |
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324 |
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325 curr_lexer->looking_at_object_index.push_front (false); |
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326 |
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327 curr_lexer->current_input_column += yyleng; |
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328 curr_lexer->looking_for_object_index = false; |
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329 curr_lexer->at_beginning_of_statement = false; |
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330 |
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331 if (curr_lexer->defining_func |
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332 && ! curr_lexer->parsed_function_name.top ()) |
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333 curr_lexer->looking_at_return_list = true; |
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334 else |
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335 curr_lexer->looking_at_matrix_or_assign_lhs = true; |
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336 |
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337 curr_lexer->decrement_promptflag (); |
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338 |
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339 curr_lexer->bracketflag++; |
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340 |
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341 curr_lexer->push_start_state (MATRIX_START); |
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342 |
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343 return curr_lexer->count_token ('['); |
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344 } |
967 | 345 } |
1 | 346 |
968 | 347 \] { |
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348 curr_lexer->lexer_debug ("\\]"); |
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350 curr_lexer->nesting_level.remove (); |
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351 |
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352 curr_lexer->looking_at_object_index.pop_front (); |
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353 |
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354 curr_lexer->looking_for_object_index = true; |
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355 curr_lexer->at_beginning_of_statement = false; |
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356 |
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357 return curr_lexer->handle_token (']'); |
968 | 358 } |
359 | |
360 %{ | |
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361 // Gobble comments. |
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362 %} |
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363 |
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364 %{ |
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365 // Start of a block comment. If the comment marker appears immediately |
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366 // after a block of full-line comments, finish the full line comment |
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367 // block. |
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368 %} |
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369 |
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370 ^{S}*{CCHAR}\{{S}*{NL} { |
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371 curr_lexer->lexer_debug ("^{S}*{CCHAR}\{{S}*{NL}"); |
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372 |
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373 yyless (0); |
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374 |
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375 if (curr_lexer->start_state () == LINE_COMMENT_START) |
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376 { |
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377 if (! curr_lexer->comment_text.empty ()) |
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378 curr_lexer->finish_comment (octave_comment_elt::full_line); |
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379 |
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380 curr_lexer->pop_start_state (); |
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381 } |
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382 |
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383 curr_lexer->push_start_state (BLOCK_COMMENT_START); |
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384 |
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385 } |
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386 |
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387 <BLOCK_COMMENT_START>^{S}*{CCHAR}\{{S}*{NL} { |
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388 curr_lexer->lexer_debug ("<BLOCK_COMMENT_START>^{S}*{CCHAR}\{{S}*{NL}"); |
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389 |
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390 curr_lexer->input_line_number++; |
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391 curr_lexer->current_input_column = 1; |
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392 |
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393 if (curr_lexer->block_comment_nesting_level) |
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394 curr_lexer->comment_text = "\n"; |
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395 |
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396 curr_lexer->block_comment_nesting_level++; |
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397 } |
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398 |
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399 %{ |
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400 // End of a block comment. If this block comment is nested inside |
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401 // another, wait for the outermost block comment block to be closed |
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402 // before storing the comment. |
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403 %} |
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404 |
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405 <BLOCK_COMMENT_START>^{S}*{CCHAR}\}{S}*{NL} { |
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406 curr_lexer->lexer_debug ("<BLOCK_COMMENT_START>^{S}*{CCHAR}\\}{S}*{NL}"); |
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407 |
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408 curr_lexer->input_line_number++; |
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409 curr_lexer->current_input_column = 1; |
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410 |
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411 if (curr_lexer->block_comment_nesting_level > 1) |
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412 curr_lexer->comment_text = "\n"; |
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413 else |
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414 curr_lexer->finish_comment (octave_comment_elt::block); |
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415 |
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416 curr_lexer->block_comment_nesting_level--; |
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417 curr_lexer->pop_start_state (); |
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418 } |
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419 |
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420 %{ |
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421 // Body of a block comment. |
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422 %} |
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423 |
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424 <BLOCK_COMMENT_START>.*{NL} { |
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425 curr_lexer->lexer_debug ("<BLOCK_COMMENT_START>.*{NL}"); |
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426 |
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427 curr_lexer->input_line_number++; |
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428 curr_lexer->current_input_column = 1; |
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429 curr_lexer->comment_text += yytext; |
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430 } |
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431 |
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432 %{ |
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433 // Full-line or end-of-line comment. |
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434 %} |
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435 |
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436 {S}*{CCHAR}.*{NL} { |
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437 curr_lexer->lexer_debug ("{S}*{CCHAR}.*{NL}"); |
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438 |
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439 curr_lexer->push_start_state (LINE_COMMENT_START); |
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440 yyless (0); |
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441 } |
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442 |
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443 <LINE_COMMENT_START>{S}*{CCHAR}.*{NL} { |
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444 curr_lexer->lexer_debug ("<LINE_COMMENT_START>{S}*{CCHAR}.*{NL}"); |
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445 |
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446 bool full_line_comment = curr_lexer->current_input_column == 1; |
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447 curr_lexer->input_line_number++; |
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448 curr_lexer->current_input_column = 1; |
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449 |
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450 bool have_space = false; |
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451 size_t len = yyleng; |
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452 size_t i = 0; |
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453 while (i < len) |
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454 { |
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455 char c = yytext[i]; |
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456 if (c == ' ' || c == '\t') |
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457 { |
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458 have_space = true; |
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459 i++; |
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460 } |
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461 else |
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462 break; |
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463 } |
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464 |
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465 while (i < len) |
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466 { |
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467 char c = yytext[i]; |
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468 if (c == '#' || c == '%') |
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469 i++; |
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470 else |
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471 break; |
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472 } |
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473 |
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474 curr_lexer->comment_text += &yytext[i]; |
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475 |
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476 if (! full_line_comment) |
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477 { |
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478 if (have_space) |
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479 curr_lexer->mark_previous_token_trailing_space (); |
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480 |
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481 curr_lexer->finish_comment (octave_comment_elt::end_of_line); |
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482 |
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483 curr_lexer->pop_start_state (); |
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484 } |
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485 } |
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486 |
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487 %{ |
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488 // End of a block of full-line comments. |
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489 %} |
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490 |
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491 <LINE_COMMENT_START>{ANY_INCLUDING_NL} { |
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492 curr_lexer->lexer_debug ("<LINE_COMMENT_START>{ANY_INCLUDING_NL}"); |
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493 |
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494 curr_lexer->xunput (yytext[0]); |
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495 |
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496 curr_lexer->finish_comment (octave_comment_elt::full_line); |
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497 |
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498 curr_lexer->pop_start_state (); |
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499 } |
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500 |
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501 %{ |
968 | 502 // Imaginary numbers. |
503 %} | |
504 | |
505 {NUMBER}{Im} { | |
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506 curr_lexer->lexer_debug ("{NUMBER}{Im}"); |
8535 | 507 |
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508 int tok = curr_lexer->previous_token_value (); |
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509 |
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510 if (curr_lexer->whitespace_is_significant () |
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511 && curr_lexer->space_follows_previous_token () |
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512 && ! (tok == '[' || tok == '{' |
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513 || curr_lexer->previous_token_is_binop ())) |
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514 { |
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515 yyless (0); |
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516 unput (','); |
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517 } |
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518 else |
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519 { |
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520 curr_lexer->handle_number (); |
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521 return curr_lexer->count_token_internal (IMAG_NUM); |
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522 } |
968 | 523 } |
524 | |
525 %{ | |
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526 // Real numbers. Don't grab the '.' part of a dot operator as part of |
968 | 527 // the constant. |
528 %} | |
529 | |
8535 | 530 {D}+/\.[\*/\\^\'] | |
968 | 531 {NUMBER} { |
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532 curr_lexer->lexer_debug ("{D}+/\\.[\\*/\\^\\']|{NUMBER}"); |
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533 |
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534 int tok = curr_lexer->previous_token_value (); |
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535 |
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536 if (curr_lexer->whitespace_is_significant () |
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537 && curr_lexer->space_follows_previous_token () |
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538 && ! (tok == '[' || tok == '{' |
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539 || curr_lexer->previous_token_is_binop ())) |
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540 { |
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541 yyless (0); |
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542 unput (','); |
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543 } |
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544 else |
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545 { |
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546 curr_lexer->handle_number (); |
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547 return curr_lexer->count_token_internal (NUM); |
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548 } |
968 | 549 } |
550 | |
551 %{ | |
552 // Eat whitespace. Whitespace inside matrix constants is handled by | |
4208 | 553 // the <MATRIX_START> start state code above. |
968 | 554 %} |
555 | |
967 | 556 {S}* { |
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557 curr_lexer->current_input_column += yyleng; |
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558 |
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559 curr_lexer->mark_previous_token_trailing_space (); |
967 | 560 } |
561 | |
968 | 562 %{ |
563 // Continuation lines. Allow comments after continuations. | |
564 %} | |
565 | |
967 | 566 {CONT}{S}*{NL} | |
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567 {CONT}{S}*{CCHAR}.*{NL} { |
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568 curr_lexer->lexer_debug ("{CONT}{S}*{NL}|{CONT}{S}*{CCHAR}.*{NL}"); |
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569 |
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570 curr_lexer->handle_continuation (); |
967 | 571 } |
1 | 572 |
968 | 573 %{ |
574 // End of file. | |
575 %} | |
576 | |
967 | 577 <<EOF>> { |
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578 return curr_lexer->handle_end_of_input (); |
967 | 579 } |
1 | 580 |
968 | 581 %{ |
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582 // Identifiers. |
968 | 583 %} |
584 | |
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585 {IDENT} { |
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586 curr_lexer->lexer_debug ("{IDENT}"); |
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587 |
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588 int tok = curr_lexer->previous_token_value (); |
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589 |
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590 if (curr_lexer->whitespace_is_significant () |
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591 && curr_lexer->space_follows_previous_token () |
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592 && ! (tok == '[' || tok == '{' |
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593 || curr_lexer->previous_token_is_binop ())) |
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594 { |
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595 yyless (0); |
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596 unput (','); |
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597 } |
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598 else |
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599 { |
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600 if (! curr_lexer->looking_at_decl_list |
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601 && curr_lexer->previous_token_may_be_command ()) |
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602 { |
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603 yyless (0); |
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604 curr_lexer->push_start_state (COMMAND_START); |
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605 } |
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606 else |
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607 { |
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608 int id_tok = curr_lexer->handle_identifier (); |
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609 |
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610 if (id_tok >= 0) |
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611 return curr_lexer->count_token_internal (id_tok); |
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612 } |
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613 } |
967 | 614 } |
1 | 615 |
968 | 616 %{ |
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617 // Superclass method identifiers. |
9476 | 618 %} |
619 | |
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620 {IDENT}@{IDENT} | |
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621 {IDENT}@{IDENT}.{IDENT} { |
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622 curr_lexer->lexer_debug ("{IDENT}@{IDENT}|{IDENT}@{IDENT}.{IDENT}"); |
9476 | 623 |
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624 int id_tok = curr_lexer->handle_superclass_identifier (); |
9476 | 625 |
626 if (id_tok >= 0) | |
627 { | |
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628 curr_lexer->looking_for_object_index = true; |
9476 | 629 |
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630 return curr_lexer->count_token_internal (SUPERCLASSREF); |
9476 | 631 } |
632 } | |
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633 |
9476 | 634 %{ |
635 // Metaclass query | |
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636 %} |
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637 |
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638 \?{IDENT} | |
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639 \?{IDENT}\.{IDENT} { |
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640 curr_lexer->lexer_debug ("\\?{IDENT}|\\?{IDENT}\\.{IDENT}"); |
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641 |
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642 int id_tok = curr_lexer->handle_meta_identifier (); |
9476 | 643 |
644 if (id_tok >= 0) | |
645 { | |
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646 curr_lexer->looking_for_object_index = true; |
9476 | 647 |
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648 return curr_lexer->count_token_internal (METAQUERY); |
9476 | 649 } |
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650 } |
9476 | 651 |
652 %{ | |
653 // Function handles and superclass references | |
4342 | 654 %} |
655 | |
4930 | 656 "@" { |
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657 curr_lexer->lexer_debug ("@"); |
8535 | 658 |
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659 curr_lexer->current_input_column++; |
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660 |
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661 curr_lexer->looking_at_function_handle++; |
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662 curr_lexer->looking_for_object_index = false; |
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663 curr_lexer->at_beginning_of_statement = false; |
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664 |
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665 return curr_lexer->count_token ('@'); |
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666 |
4342 | 667 } |
668 | |
669 %{ | |
968 | 670 // A new line character. New line characters inside matrix constants |
4208 | 671 // are handled by the <MATRIX_START> start state code above. If closest |
985 | 672 // nesting is inside parentheses, don't return a row separator. |
968 | 673 %} |
674 | |
967 | 675 {NL} { |
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676 curr_lexer->lexer_debug ("{NL}"); |
8535 | 677 |
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678 curr_lexer->input_line_number++; |
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679 curr_lexer->current_input_column = 1; |
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680 |
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681 if (curr_lexer->nesting_level.none ()) |
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682 { |
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683 curr_lexer->at_beginning_of_statement = true; |
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684 return curr_lexer->count_token ('\n'); |
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685 } |
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686 else if (curr_lexer->nesting_level.is_paren ()) |
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687 { |
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688 curr_lexer->at_beginning_of_statement = false; |
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689 curr_lexer->gripe_matlab_incompatible ("bare newline inside parentheses"); |
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690 } |
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691 else if (curr_lexer->nesting_level.is_bracket_or_brace ()) |
985 | 692 return LEXICAL_ERROR; |
967 | 693 } |
1 | 694 |
968 | 695 %{ |
696 // Single quote can either be the beginning of a string or a transpose | |
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697 // operator. |
968 | 698 %} |
699 | |
967 | 700 "'" { |
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701 curr_lexer->lexer_debug ("'"); |
8535 | 702 |
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703 int tok = curr_lexer->previous_token_value (); |
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704 |
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705 bool transpose = false; |
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706 |
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707 if (curr_lexer->whitespace_is_significant ()) |
967 | 708 { |
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709 if (curr_lexer->space_follows_previous_token ()) |
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710 { |
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711 if (tok == '[' || tok == '{' |
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712 || curr_lexer->previous_token_is_binop ()) |
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713 { |
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714 curr_lexer->current_input_column++; |
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715 int retval = curr_lexer->handle_string ('\''); |
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716 return curr_lexer->count_token_internal (retval); |
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717 } |
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718 else |
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719 { |
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720 yyless (0); |
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721 curr_lexer->xunput (','); |
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722 } |
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723 } |
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724 else |
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725 { |
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726 if (tok == ',' || tok == ';' || tok == '[' || tok == '{' |
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727 || curr_lexer->previous_token_is_binop ()) |
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728 { |
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729 curr_lexer->current_input_column++; |
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730 int retval = curr_lexer->handle_string ('\''); |
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731 return curr_lexer->count_token_internal (retval); |
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732 } |
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733 else |
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734 return curr_lexer->count_token (QUOTE); |
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735 } |
967 | 736 } |
737 else | |
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738 { |
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739 if (tok == NAME || tok == NUM || tok == IMAG_NUM |
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740 || tok == ')' || tok == ']' || tok == '}') |
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741 return curr_lexer->count_token (QUOTE); |
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742 else |
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743 { |
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744 curr_lexer->current_input_column++; |
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745 int retval = curr_lexer->handle_string ('\''); |
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746 return curr_lexer->count_token_internal (retval); |
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747 } |
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748 } |
967 | 749 } |
1 | 750 |
968 | 751 %{ |
971 | 752 // Double quotes always begin strings. |
753 %} | |
754 | |
973 | 755 \" { |
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756 curr_lexer->lexer_debug ("\""); |
8535 | 757 |
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758 int tok = curr_lexer->previous_token_value (); |
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759 |
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760 bool transpose = false; |
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761 |
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762 if (curr_lexer->whitespace_is_significant ()) |
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763 { |
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764 if (curr_lexer->space_follows_previous_token ()) |
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765 { |
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766 if (tok == ',' || tok == ';' || tok == '[' || tok == '{' |
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767 || curr_lexer->previous_token_is_binop ()) |
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768 { |
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769 curr_lexer->current_input_column++; |
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770 int retval = curr_lexer->handle_string ('"'); |
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771 return curr_lexer->count_token_internal (retval); |
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772 } |
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773 else |
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774 { |
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775 yyless (0); |
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776 curr_lexer->xunput (','); |
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777 } |
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778 } |
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779 else |
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780 { |
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781 curr_lexer->current_input_column++; |
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782 int retval = curr_lexer->handle_string ('"'); |
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783 return curr_lexer->count_token_internal (retval); |
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784 } |
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785 } |
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786 else |
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787 { |
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788 curr_lexer->current_input_column++; |
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789 int retval = curr_lexer->handle_string ('"'); |
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790 return curr_lexer->count_token_internal (retval); |
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791 } |
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792 } |
971 | 793 |
794 %{ | |
968 | 795 // Other operators. |
796 %} | |
797 | |
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798 ":" { return curr_lexer->handle_op (":", ':'); } |
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799 ".+" { return curr_lexer->handle_incompatible_op (".+", EPLUS); } |
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800 ".-" { return curr_lexer->handle_incompatible_op (".-", EMINUS); } |
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801 ".*" { return curr_lexer->handle_op (".*", EMUL); } |
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802 "./" { return curr_lexer->handle_op ("./", EDIV); } |
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803 ".\\" { return curr_lexer->handle_op (".\\", ELEFTDIV); } |
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804 ".^" { return curr_lexer->handle_op (".^", EPOW); } |
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805 ".**" { return curr_lexer->handle_incompatible_op (".**", EPOW); } |
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806 "<=" { return curr_lexer->handle_op ("<=", EXPR_LE); } |
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807 "==" { return curr_lexer->handle_op ("==", EXPR_EQ); } |
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808 "~=" { return curr_lexer->handle_op ("~=", EXPR_NE); } |
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809 "!=" { return curr_lexer->handle_incompatible_op ("!=", EXPR_NE); } |
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810 ">=" { return curr_lexer->handle_op (">=", EXPR_GE); } |
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|
811 "&" { return curr_lexer->handle_op ("&", EXPR_AND); } |
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812 "|" { return curr_lexer->handle_op ("|", EXPR_OR); } |
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813 "<" { return curr_lexer->handle_op ("<", EXPR_LT); } |
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814 ">" { return curr_lexer->handle_op (">", EXPR_GT); } |
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815 "*" { return curr_lexer->handle_op ("*", '*'); } |
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816 "/" { return curr_lexer->handle_op ("/", '/'); } |
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817 "\\" { return curr_lexer->handle_op ("\\", LEFTDIV); } |
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818 "^" { return curr_lexer->handle_op ("^", POW); } |
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819 "**" { return curr_lexer->handle_incompatible_op ("**", POW); } |
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820 "&&" { return curr_lexer->handle_op ("&&", EXPR_AND_AND); } |
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821 "||" { return curr_lexer->handle_op ("||", EXPR_OR_OR); } |
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822 "<<" { return curr_lexer->handle_incompatible_op ("<<", LSHIFT); } |
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823 ">>" { return curr_lexer->handle_incompatible_op (">>", RSHIFT); } |
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824 ";" { return curr_lexer->handle_op (";", ';', true, true); } |
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825 |
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826 "+" { |
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827 int tok = curr_lexer->handle_unary_op ("+", '+'); |
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828 |
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829 if (tok < 0) |
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830 { |
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831 yyless (0); |
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832 curr_lexer->xunput (','); |
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833 } |
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834 else |
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835 return tok; |
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836 } |
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837 |
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838 "-" { |
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839 int prev_tok = curr_lexer->previous_token_value (); |
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840 bool space_before = curr_lexer->space_follows_previous_token (); |
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841 int c = curr_lexer->text_yyinput (); |
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842 curr_lexer->xunput (c); |
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843 bool space_after = (c == ' ' || c == '\t'); |
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844 |
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845 if (space_before && ! space_after |
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846 && curr_lexer->previous_token_may_be_command ()) |
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847 { |
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848 yyless (0); |
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849 curr_lexer->push_start_state (COMMAND_START); |
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850 } |
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851 else |
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852 { |
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853 int tok = curr_lexer->handle_unary_op ("-", '-'); |
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854 |
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855 if (tok < 0) |
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856 { |
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857 yyless (0); |
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858 curr_lexer->xunput (','); |
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859 } |
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860 else |
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861 return tok; |
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862 } |
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863 } |
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864 |
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865 "~" { |
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866 int tok = curr_lexer->handle_unary_op ("~", EXPR_NOT); |
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867 |
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868 if (tok < 0) |
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869 { |
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870 yyless (0); |
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871 curr_lexer->xunput (','); |
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872 } |
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873 else |
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874 return tok; |
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875 } |
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876 |
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877 "!" { |
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878 int tok = curr_lexer->handle_incompatible_unary_op ("!", EXPR_NOT); |
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879 |
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880 if (tok < 0) |
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881 { |
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882 yyless (0); |
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883 curr_lexer->xunput (','); |
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884 } |
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885 else |
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886 return tok; |
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887 } |
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888 |
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889 "," { |
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890 return curr_lexer->handle_op |
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891 (",", ',', true, ! curr_lexer->looking_at_object_index.front ()); |
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892 } |
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893 |
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894 ".'" { |
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895 return curr_lexer->handle_op (".'", TRANSPOSE, true, false); |
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896 } |
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897 |
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898 "++" { |
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899 int tok = curr_lexer->handle_incompatible_unary_op |
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900 ("++", PLUS_PLUS, true, false, true); |
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901 |
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902 if (tok < 0) |
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903 { |
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904 yyless (0); |
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905 curr_lexer->xunput (','); |
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906 } |
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907 else |
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908 return tok; |
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909 } |
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910 |
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911 "--" { |
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912 int tok = curr_lexer->handle_incompatible_unary_op |
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913 ("--", MINUS_MINUS, true, false, true); |
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914 |
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915 if (tok < 0) |
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916 { |
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917 yyless (0); |
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918 curr_lexer->xunput (','); |
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919 } |
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920 else |
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921 return tok; |
967 | 922 } |
1 | 923 |
967 | 924 "(" { |
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925 curr_lexer->lexer_debug ("("); |
8535 | 926 |
16263
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927 bool unput_comma = false; |
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928 |
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929 if (curr_lexer->whitespace_is_significant () |
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930 && curr_lexer->space_follows_previous_token ()) |
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931 { |
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932 int tok = curr_lexer->previous_token_value (); |
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933 |
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934 if (! (tok == ';' || tok == ',' || tok == '[' || tok == '{' |
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935 || curr_lexer->previous_token_is_binop ())) |
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936 unput_comma = true; |
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937 } |
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938 |
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939 if (unput_comma) |
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940 { |
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941 yyless (0); |
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942 curr_lexer->xunput (','); |
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943 } |
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944 else |
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945 { |
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946 // If we are looking for an object index, then push TRUE for |
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947 // looking_at_object_index. Otherwise, just push whatever state |
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948 // is current (so that we can pop it off the stack when we find |
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949 // the matching close paren). |
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950 |
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951 curr_lexer->looking_at_object_index.push_front |
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952 (curr_lexer->looking_for_object_index); |
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953 |
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954 curr_lexer->looking_at_indirect_ref = false; |
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955 curr_lexer->looking_for_object_index = false; |
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956 curr_lexer->at_beginning_of_statement = false; |
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957 |
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958 curr_lexer->nesting_level.paren (); |
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959 curr_lexer->decrement_promptflag (); |
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960 |
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961 return curr_lexer->handle_token ('('); |
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962 } |
967 | 963 } |
964 | |
965 ")" { | |
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966 curr_lexer->lexer_debug (")"); |
8535 | 967 |
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968 curr_lexer->nesting_level.remove (); |
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969 curr_lexer->current_input_column++; |
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970 |
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971 curr_lexer->looking_at_object_index.pop_front (); |
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972 |
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973 curr_lexer->looking_for_object_index = true; |
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974 curr_lexer->at_beginning_of_statement = false; |
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975 |
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976 if (curr_lexer->looking_at_anon_fcn_args) |
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977 curr_lexer->looking_at_anon_fcn_args = false; |
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978 |
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979 return curr_lexer->count_token (')'); |
967 | 980 } |
981 | |
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982 "." { |
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983 curr_lexer->lexer_debug ("."); |
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984 |
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985 curr_lexer->looking_for_object_index = false; |
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986 curr_lexer->at_beginning_of_statement = false; |
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987 |
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988 return curr_lexer->handle_token ('.'); |
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989 } |
8535 | 990 |
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991 %{ |
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992 // = and op= operators. |
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993 %} |
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994 |
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995 "=" { |
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996 int tok = curr_lexer->handle_assign_op ("=", '='); |
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997 if (tok < 0) |
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998 { |
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999 yyless (0); |
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1000 curr_lexer->xunput ('@'); |
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1001 curr_lexer->push_start_state (KLUGE); |
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1002 } |
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1003 else |
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1004 return tok; |
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1005 } |
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1006 |
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1007 "+=" { |
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1008 int tok = curr_lexer->handle_incompatible_assign_op ("+=", ADD_EQ); |
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1009 if (tok < 0) |
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1010 { |
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1011 yyless (0); |
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1012 curr_lexer->xunput ('@'); |
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1013 curr_lexer->push_start_state (KLUGE); |
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1014 } |
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1015 else |
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1016 return tok; |
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1017 } |
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1018 |
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1019 "-=" { |
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1020 int tok = curr_lexer->handle_incompatible_assign_op ("-=", SUB_EQ); |
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1021 if (tok < 0) |
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1022 { |
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1023 yyless (0); |
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1024 curr_lexer->xunput ('@'); |
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1025 curr_lexer->push_start_state (KLUGE); |
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1026 } |
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1027 else |
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1028 return tok; |
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1029 } |
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1030 |
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1031 "*=" { |
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1032 int tok = curr_lexer->handle_incompatible_assign_op ("*=", MUL_EQ); |
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1033 if (tok < 0) |
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1034 { |
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1035 yyless (0); |
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1036 curr_lexer->xunput ('@'); |
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1037 curr_lexer->push_start_state (KLUGE); |
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1038 } |
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1039 else |
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1040 return tok; |
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1041 } |
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1042 |
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1043 "/=" { |
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1044 int tok = curr_lexer->handle_incompatible_assign_op ("/=", DIV_EQ); |
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1045 if (tok < 0) |
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1046 { |
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1047 yyless (0); |
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1048 curr_lexer->xunput ('@'); |
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diff
changeset
|
1049 curr_lexer->push_start_state (KLUGE); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1050 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1051 else |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1052 return tok; |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1053 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1054 |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1055 "\\=" { |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1056 int tok = curr_lexer->handle_incompatible_assign_op ("\\=", LEFTDIV_EQ); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1057 if (tok < 0) |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1058 { |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1059 yyless (0); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1060 curr_lexer->xunput ('@'); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1061 curr_lexer->push_start_state (KLUGE); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1062 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1063 else |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1064 return tok; |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1065 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1066 |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1067 ".+=" { |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1068 int tok = curr_lexer->handle_incompatible_assign_op (".+=", ADD_EQ); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1069 if (tok < 0) |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1070 { |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1071 yyless (0); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1072 curr_lexer->xunput ('@'); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1073 curr_lexer->push_start_state (KLUGE); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1074 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1075 else |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1076 return tok; |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1077 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1078 |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1079 ".-=" { |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1080 int tok = curr_lexer->handle_incompatible_assign_op (".-=", SUB_EQ); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1081 if (tok < 0) |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1082 { |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1083 yyless (0); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1084 curr_lexer->xunput ('@'); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1085 curr_lexer->push_start_state (KLUGE); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1086 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1087 else |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1088 return tok; |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1089 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1090 |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1091 ".*=" { |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1092 int tok = curr_lexer->handle_incompatible_assign_op (".*=", EMUL_EQ); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1093 if (tok < 0) |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1094 { |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1095 yyless (0); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1096 curr_lexer->xunput ('@'); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1097 curr_lexer->push_start_state (KLUGE); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1098 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1099 else |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1100 return tok; |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1101 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1102 |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1103 "./=" { |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1104 int tok = curr_lexer->handle_incompatible_assign_op ("./=", EDIV_EQ); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1105 if (tok < 0) |
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 yyless (0); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1108 curr_lexer->xunput ('@'); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1109 curr_lexer->push_start_state (KLUGE); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1110 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1111 else |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1112 return tok; |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1113 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1114 |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1115 ".\\=" { |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1116 int tok = curr_lexer->handle_incompatible_assign_op (".\\=", ELEFTDIV_EQ); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1117 if (tok < 0) |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1118 { |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1119 yyless (0); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1120 curr_lexer->xunput ('@'); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1121 curr_lexer->push_start_state (KLUGE); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1122 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1123 else |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1124 return tok; |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1125 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1126 |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1127 "^=" { |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1128 int tok = curr_lexer->handle_incompatible_assign_op ("^=", POW_EQ); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1129 if (tok < 0) |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1130 { |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1131 yyless (0); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1132 curr_lexer->xunput ('@'); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1133 curr_lexer->push_start_state (KLUGE); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1134 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1135 else |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1136 return tok; |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1137 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1138 |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1139 "**=" { |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1140 int tok = curr_lexer->handle_incompatible_assign_op ("^=", POW_EQ); |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1141 if (tok < 0) |
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1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1142 { |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1143 yyless (0); |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1144 curr_lexer->xunput ('@'); |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1145 curr_lexer->push_start_state (KLUGE); |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1146 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1147 else |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1148 return tok; |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1149 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1150 |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1151 ".^=" { |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1152 int tok = curr_lexer->handle_incompatible_assign_op (".^=", EPOW_EQ); |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1153 if (tok < 0) |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1154 { |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1155 yyless (0); |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1156 curr_lexer->xunput ('@'); |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1157 curr_lexer->push_start_state (KLUGE); |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1158 } |
db7f07b22b9b
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John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1159 else |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1160 return tok; |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1161 } |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1162 |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1163 ".**=" { |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1164 int tok = curr_lexer->handle_incompatible_assign_op (".^=", EPOW_EQ); |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1165 if (tok < 0) |
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1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1166 { |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1167 yyless (0); |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1168 curr_lexer->xunput ('@'); |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
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diff
changeset
|
1169 curr_lexer->push_start_state (KLUGE); |
db7f07b22b9b
1/10 commits reworking the lexer
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1170 } |
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1171 else |
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1172 return tok; |
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1173 } |
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1174 |
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1175 "&=" { |
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1176 int tok = curr_lexer->handle_incompatible_assign_op ("&=", AND_EQ); |
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1177 if (tok < 0) |
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1178 { |
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1179 yyless (0); |
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1180 curr_lexer->xunput ('@'); |
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1181 curr_lexer->push_start_state (KLUGE); |
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1182 } |
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1183 else |
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1184 return tok; |
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1185 } |
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1186 |
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1187 "|=" { |
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1188 int tok = curr_lexer->handle_incompatible_assign_op ("|=", OR_EQ); |
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1189 if (tok < 0) |
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1190 { |
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1191 yyless (0); |
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1192 curr_lexer->xunput ('@'); |
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1193 curr_lexer->push_start_state (KLUGE); |
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1194 } |
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1195 else |
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1196 return tok; |
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1197 } |
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1198 |
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1199 "<<=" { |
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1200 int tok = curr_lexer->handle_incompatible_assign_op ("<<=", LSHIFT_EQ); |
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1201 if (tok < 0) |
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1202 { |
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1203 yyless (0); |
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1204 curr_lexer->xunput ('@'); |
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1205 curr_lexer->push_start_state (KLUGE); |
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1206 } |
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1207 else |
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1208 return tok; |
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1209 } |
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1210 |
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1211 ">>=" { |
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1212 int tok = curr_lexer->handle_incompatible_assign_op (">>=", RSHIFT_EQ); |
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1213 if (tok < 0) |
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1214 { |
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1215 yyless (0); |
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1216 curr_lexer->xunput ('@'); |
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1217 curr_lexer->push_start_state (KLUGE); |
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1218 } |
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1219 else |
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1220 return tok; |
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1221 } |
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1222 |
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1223 "{" { |
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1224 curr_lexer->lexer_debug ("{"); |
8535 | 1225 |
16263
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1226 bool unput_comma = false; |
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1227 |
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1228 if (curr_lexer->whitespace_is_significant () |
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1229 && curr_lexer->space_follows_previous_token ()) |
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1230 { |
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1231 int tok = curr_lexer->previous_token_value (); |
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1232 |
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1233 if (! (tok == ';' || tok == ',' || tok == '[' || tok == '{' |
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1234 || curr_lexer->previous_token_is_binop ())) |
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1235 unput_comma = true; |
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1236 } |
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1237 |
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1238 if (unput_comma) |
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1239 { |
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1240 yyless (0); |
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1241 curr_lexer->xunput (','); |
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1242 } |
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1243 else |
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1244 { |
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1245 curr_lexer->nesting_level.brace (); |
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1246 |
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1247 curr_lexer->looking_at_object_index.push_front |
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1248 (curr_lexer->looking_for_object_index); |
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1249 |
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1250 curr_lexer->current_input_column += yyleng; |
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1251 curr_lexer->looking_for_object_index = false; |
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1252 curr_lexer->at_beginning_of_statement = false; |
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1253 |
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1254 curr_lexer->decrement_promptflag (); |
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1255 |
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1256 curr_lexer->braceflag++; |
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1257 |
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1258 curr_lexer->push_start_state (MATRIX_START); |
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1259 |
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1260 return curr_lexer->count_token ('{'); |
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1261 } |
3351 | 1262 } |
1263 | |
1264 "}" { | |
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1265 curr_lexer->lexer_debug ("}"); |
8535 | 1266 |
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1267 curr_lexer->looking_at_object_index.pop_front (); |
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1268 |
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1269 curr_lexer->looking_for_object_index = true; |
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1270 curr_lexer->at_beginning_of_statement = false; |
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1271 |
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1272 curr_lexer->nesting_level.remove (); |
3351 | 1273 |
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1274 return curr_lexer->handle_token ('}'); |
3351 | 1275 } |
1276 | |
968 | 1277 %{ |
2066 | 1278 // Unrecognized input is a lexical error. |
968 | 1279 %} |
1 | 1280 |
2042 | 1281 . { |
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1282 curr_lexer->lexer_debug ("."); |
8535 | 1283 |
16125
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1284 curr_lexer->xunput (yytext[0]); |
16113
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1285 |
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1286 int c = curr_lexer->text_yyinput (); |
4248 | 1287 |
1288 if (c != EOF) | |
4240 | 1289 { |
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1290 curr_lexer->current_input_column++; |
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1291 |
15466
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1292 error ("invalid character '%s' (ASCII %d) near line %d, column %d", |
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1293 undo_string_escape (static_cast<char> (c)), c, |
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1294 curr_lexer->input_line_number, curr_lexer->current_input_column); |
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1295 |
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1296 return LEXICAL_ERROR; |
4240 | 1297 } |
1298 else | |
16164
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1299 return curr_lexer->handle_end_of_input (); |
2066 | 1300 } |
1 | 1301 |
1302 %% | |
1303 | |
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1304 static void |
8535 | 1305 display_character (char c) |
1306 { | |
1307 if (isgraph (c)) | |
1308 std::cerr << c; | |
1309 else | |
1310 switch (c) | |
1311 { | |
1312 case 0: | |
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1313 std::cerr << "NUL"; |
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1314 break; |
8535 | 1315 |
1316 case 1: | |
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1317 std::cerr << "SOH"; |
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parents:
10182
diff
changeset
|
1318 break; |
8535 | 1319 |
1320 case 2: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1321 std::cerr << "STX"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1322 break; |
8535 | 1323 |
1324 case 3: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1325 std::cerr << "ETX"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1326 break; |
8535 | 1327 |
1328 case 4: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1329 std::cerr << "EOT"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1330 break; |
8535 | 1331 |
1332 case 5: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1333 std::cerr << "ENQ"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1334 break; |
8535 | 1335 |
1336 case 6: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1337 std::cerr << "ACK"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1338 break; |
8535 | 1339 |
1340 case 7: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1341 std::cerr << "\\a"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1342 break; |
8535 | 1343 |
1344 case 8: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1345 std::cerr << "\\b"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1346 break; |
8535 | 1347 |
1348 case 9: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1349 std::cerr << "\\t"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1350 break; |
8535 | 1351 |
1352 case 10: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1353 std::cerr << "\\n"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1354 break; |
8535 | 1355 |
1356 case 11: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1357 std::cerr << "\\v"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1358 break; |
8535 | 1359 |
1360 case 12: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1361 std::cerr << "\\f"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1362 break; |
8535 | 1363 |
1364 case 13: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1365 std::cerr << "\\r"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1366 break; |
8535 | 1367 |
1368 case 14: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1369 std::cerr << "SO"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1370 break; |
8535 | 1371 |
1372 case 15: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1373 std::cerr << "SI"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1374 break; |
8535 | 1375 |
1376 case 16: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1377 std::cerr << "DLE"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1378 break; |
8535 | 1379 |
1380 case 17: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1381 std::cerr << "DC1"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1382 break; |
8535 | 1383 |
1384 case 18: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1385 std::cerr << "DC2"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1386 break; |
8535 | 1387 |
1388 case 19: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1389 std::cerr << "DC3"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1390 break; |
8535 | 1391 |
1392 case 20: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1393 std::cerr << "DC4"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1394 break; |
8535 | 1395 |
1396 case 21: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1397 std::cerr << "NAK"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1398 break; |
8535 | 1399 |
1400 case 22: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1401 std::cerr << "SYN"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1402 break; |
8535 | 1403 |
1404 case 23: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1405 std::cerr << "ETB"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1406 break; |
8535 | 1407 |
1408 case 24: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1409 std::cerr << "CAN"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1410 break; |
8535 | 1411 |
1412 case 25: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1413 std::cerr << "EM"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1414 break; |
8535 | 1415 |
1416 case 26: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1417 std::cerr << "SUB"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1418 break; |
8535 | 1419 |
1420 case 27: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1421 std::cerr << "ESC"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1422 break; |
8535 | 1423 |
1424 case 28: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1425 std::cerr << "FS"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1426 break; |
8535 | 1427 |
1428 case 29: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1429 std::cerr << "GS"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1430 break; |
8535 | 1431 |
1432 case 30: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1433 std::cerr << "RS"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1434 break; |
8535 | 1435 |
1436 case 31: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1437 std::cerr << "US"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1438 break; |
8535 | 1439 |
1440 case 32: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1441 std::cerr << "SPACE"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1442 break; |
8535 | 1443 |
1444 case 127: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1445 std::cerr << "DEL"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1446 break; |
8535 | 1447 } |
1448 } | |
8745
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
1449 |
13973
2c664266e9d0
clean up parser memory on exit
John W. Eaton <jwe@octave.org>
parents:
13260
diff
changeset
|
1450 void |
2c664266e9d0
clean up parser memory on exit
John W. Eaton <jwe@octave.org>
parents:
13260
diff
changeset
|
1451 cleanup_parser (void) |
2c664266e9d0
clean up parser memory on exit
John W. Eaton <jwe@octave.org>
parents:
13260
diff
changeset
|
1452 { |
1 | 1453 } |
1454 | |
16114
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1455 // Return 1 if the given character matches any character in the given |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1456 // string. |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1457 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1458 static bool |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1459 match_any (char c, const char *s) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1460 { |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1461 char tmp; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1462 while ((tmp = *s++) != '\0') |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1463 { |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1464 if (c == tmp) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1465 return true; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1466 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1467 return false; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1468 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1469 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1470 // Given information about the spacing surrounding an operator, |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1471 // return 1 if it looks like it should be treated as a binary |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1472 // operator. For example, |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1473 // |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1474 // [ 1 + 2 ] or [ 1+ 2] or [ 1+2 ] ==> binary |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1475 // |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1476 // [ 1 +2 ] ==> unary |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1477 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1478 static bool |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1479 looks_like_bin_op (bool spc_prev, int next_char) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1480 { |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1481 bool spc_next = (next_char == ' ' || next_char == '\t'); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1482 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1483 return ((spc_prev && spc_next) || ! spc_prev); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1484 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1485 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1486 bool |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1487 is_keyword (const std::string& s) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1488 { |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1489 // Parsing function names like "set.property_name" inside |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1490 // 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
|
1491 // "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
|
1492 // 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
|
1493 // 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
|
1494 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1495 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
|
1496 && ! (s == "set" || s == "get")); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1497 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1498 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1499 DEFUN (iskeyword, args, , |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1500 "-*- texinfo -*-\n\ |
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1501 @deftypefn {Built-in Function} {} iskeyword ()\n\ |
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1502 @deftypefnx {Built-in Function} {} iskeyword (@var{name})\n\ |
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1503 Return true if @var{name} is an Octave keyword. If @var{name}\n\ |
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* lex.ll: Reorder function definitions.
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|
1504 is omitted, return a list of keywords.\n\ |
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* lex.ll: Reorder function definitions.
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|
1505 @seealso{isvarname, exist}\n\ |
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1506 @end deftypefn") |
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* lex.ll: Reorder function definitions.
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|
1507 { |
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|
1508 octave_value retval; |
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* lex.ll: Reorder function definitions.
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|
1509 |
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|
1510 int argc = args.length () + 1; |
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* lex.ll: Reorder function definitions.
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|
1511 |
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|
1512 string_vector argv = args.make_argv ("iskeyword"); |
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* lex.ll: Reorder function definitions.
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|
1513 |
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* lex.ll: Reorder function definitions.
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|
1514 if (error_state) |
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* lex.ll: Reorder function definitions.
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|
1515 return retval; |
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* lex.ll: Reorder function definitions.
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|
1516 |
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|
1517 if (argc == 1) |
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* lex.ll: Reorder function definitions.
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|
1518 { |
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* lex.ll: Reorder function definitions.
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|
1519 // Neither set and get are keywords. See the note in the |
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* lex.ll: Reorder function definitions.
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|
1520 // is_keyword function for additional details. |
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* lex.ll: Reorder function definitions.
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|
1521 |
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* lex.ll: Reorder function definitions.
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|
1522 string_vector lst (TOTAL_KEYWORDS); |
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* lex.ll: Reorder function definitions.
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|
1523 |
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* lex.ll: Reorder function definitions.
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|
1524 int j = 0; |
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* lex.ll: Reorder function definitions.
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|
1525 |
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|
1526 for (int i = 0; i < TOTAL_KEYWORDS; i++) |
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|
1527 { |
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|
1528 std::string tmp = wordlist[i].name; |
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* lex.ll: Reorder function definitions.
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|
1529 |
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|
1530 if (! (tmp == "set" || tmp == "get")) |
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* lex.ll: Reorder function definitions.
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|
1531 lst[j++] = tmp; |
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* lex.ll: Reorder function definitions.
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|
1532 } |
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* lex.ll: Reorder function definitions.
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diff
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|
1533 |
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|
1534 lst.resize (j); |
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* lex.ll: Reorder function definitions.
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|
1535 |
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|
1536 retval = Cell (lst.sort ()); |
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|
1537 } |
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* lex.ll: Reorder function definitions.
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|
1538 else if (argc == 2) |
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* lex.ll: Reorder function definitions.
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|
1539 { |
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* lex.ll: Reorder function definitions.
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|
1540 retval = is_keyword (argv[1]); |
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* lex.ll: Reorder function definitions.
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|
1541 } |
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* lex.ll: Reorder function definitions.
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|
1542 else |
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* lex.ll: Reorder function definitions.
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|
1543 print_usage (); |
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* lex.ll: Reorder function definitions.
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|
1544 |
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* lex.ll: Reorder function definitions.
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|
1545 return retval; |
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* lex.ll: Reorder function definitions.
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|
1546 } |
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* lex.ll: Reorder function definitions.
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diff
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|
1547 |
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* lex.ll: Reorder function definitions.
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|
1548 /* |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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diff
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|
1549 |
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|
1550 %!assert (iskeyword ("for")) |
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|
1551 %!assert (iskeyword ("fort"), false) |
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* lex.ll: Reorder function definitions.
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|
1552 %!assert (iskeyword ("fft"), false) |
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|
1553 |
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* lex.ll: Reorder function definitions.
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|
1554 */ |
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* lex.ll: Reorder function definitions.
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|
1555 |
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* lex.ll: Reorder function definitions.
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|
1556 // Used to delete trailing white space from tokens. |
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* lex.ll: Reorder function definitions.
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|
1557 |
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* lex.ll: Reorder function definitions.
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|
1558 static std::string |
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* lex.ll: Reorder function definitions.
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|
1559 strip_trailing_whitespace (char *s) |
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* lex.ll: Reorder function definitions.
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|
1560 { |
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* lex.ll: Reorder function definitions.
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|
1561 std::string retval = s; |
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* lex.ll: Reorder function definitions.
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|
1562 |
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* lex.ll: Reorder function definitions.
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|
1563 size_t pos = retval.find_first_of (" \t"); |
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* lex.ll: Reorder function definitions.
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|
1564 |
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* lex.ll: Reorder function definitions.
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|
1565 if (pos != std::string::npos) |
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* lex.ll: Reorder function definitions.
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|
1566 retval.resize (pos); |
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* lex.ll: Reorder function definitions.
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|
1567 |
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* lex.ll: Reorder function definitions.
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|
1568 return retval; |
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* lex.ll: Reorder function definitions.
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|
1569 } |
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* lex.ll: Reorder function definitions.
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diff
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|
1570 |
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* lex.ll: Reorder function definitions.
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|
1571 DEFUN (__display_tokens__, args, nargout, |
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|
1572 "-*- texinfo -*-\n\ |
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|
1573 @deftypefn {Built-in Function} {} __display_tokens__ ()\n\ |
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* lex.ll: Reorder function definitions.
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|
1574 Query or set the internal variable that determines whether Octave's\n\ |
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* lex.ll: Reorder function definitions.
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|
1575 lexer displays tokens as they are read.\n\ |
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|
1576 @end deftypefn") |
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* lex.ll: Reorder function definitions.
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|
1577 { |
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* lex.ll: Reorder function definitions.
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|
1578 return SET_INTERNAL_VARIABLE (display_tokens); |
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* lex.ll: Reorder function definitions.
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|
1579 } |
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* lex.ll: Reorder function definitions.
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16113
diff
changeset
|
1580 |
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|
1581 DEFUN (__token_count__, , , |
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|
1582 "-*- texinfo -*-\n\ |
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|
1583 @deftypefn {Built-in Function} {} __token_count__ ()\n\ |
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|
1584 Number of language tokens processed since Octave startup.\n\ |
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* lex.ll: Reorder function definitions.
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|
1585 @end deftypefn") |
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* lex.ll: Reorder function definitions.
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|
1586 { |
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* lex.ll: Reorder function definitions.
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|
1587 return octave_value (Vtoken_count); |
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16113
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|
1588 } |
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* lex.ll: Reorder function definitions.
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diff
changeset
|
1589 |
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* lex.ll: Reorder function definitions.
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|
1590 DEFUN (__lexer_debug_flag__, args, nargout, |
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* lex.ll: Reorder function definitions.
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|
1591 "-*- texinfo -*-\n\ |
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|
1592 @deftypefn {Built-in Function} {@var{old_val} =} __lexer_debug_flag__ (@var{new_val}))\n\ |
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* lex.ll: Reorder function definitions.
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|
1593 Undocumented internal function.\n\ |
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* lex.ll: Reorder function definitions.
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|
1594 @end deftypefn") |
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* lex.ll: Reorder function definitions.
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|
1595 { |
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* lex.ll: Reorder function definitions.
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|
1596 octave_value retval; |
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* lex.ll: Reorder function definitions.
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|
1597 |
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|
1598 retval = set_internal_variable (lexer_debug_flag, args, nargout, |
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* lex.ll: Reorder function definitions.
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|
1599 "__lexer_debug_flag__"); |
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|
1600 |
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* lex.ll: Reorder function definitions.
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|
1601 return retval; |
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|
1602 } |
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* lex.ll: Reorder function definitions.
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|
1603 |
16117
771186909285
maint: move class definition in lex.ll
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|
1604 class |
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|
1605 flex_stream_reader : public stream_reader |
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|
1606 { |
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|
1607 public: |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
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16154
diff
changeset
|
1608 flex_stream_reader (octave_lexer *l, char *buf_arg) |
16117
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|
1609 : stream_reader (), lexer (l), buf (buf_arg) |
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|
1610 { } |
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|
1611 |
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|
1612 int getc (void) { return lexer->text_yyinput (); } |
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|
1613 int ungetc (int c) { lexer->xunput (c, buf); return 0; } |
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|
1614 |
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|
1615 private: |
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|
1616 |
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|
1617 // No copying! |
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|
1618 |
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|
1619 flex_stream_reader (const flex_stream_reader&); |
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|
1620 |
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|
1621 flex_stream_reader& operator = (const flex_stream_reader&); |
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16116
diff
changeset
|
1622 |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
1623 octave_lexer *lexer; |
16117
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1624 |
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1625 char *buf; |
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1626 }; |
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1627 |
16193
d7392bf42fd1
use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents:
16183
diff
changeset
|
1628 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
|
1629 { |
16230
4bf907906134
use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents:
16229
diff
changeset
|
1630 tokens.clear (); |
16194
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1631 } |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1632 |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1633 void |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1634 lexical_feedback::init (void) |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1635 { |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1636 // 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
|
1637 // index. |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1638 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
|
1639 } |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1640 |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1641 void |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1642 lexical_feedback::reset (void) |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1643 { |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1644 end_of_input = false; |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1645 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
|
1646 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
|
1647 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
|
1648 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
|
1649 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
|
1650 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
|
1651 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
|
1652 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
|
1653 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
|
1654 parsing_class_method = false; |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1655 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
|
1656 parsing_classdef = false; |
16203
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
1657 force_script = false; |
16199
810a71122c25
move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16195
diff
changeset
|
1658 reading_fcn_file = false; |
810a71122c25
move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16195
diff
changeset
|
1659 reading_script_file = false; |
810a71122c25
move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16195
diff
changeset
|
1660 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
|
1661 input_line_number = 1; |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1662 current_input_column = 1; |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1663 bracketflag = 0; |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1664 braceflag = 0; |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1665 looping = 0; |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1666 defining_func = 0; |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1667 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
|
1668 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
|
1669 token_count = 0; |
16207
0467d68ca891
move current_input_line to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16203
diff
changeset
|
1670 current_input_line = ""; |
16228
e19b1632d7c1
revamp most comment handling
John W. Eaton <jwe@octave.org>
parents:
16224
diff
changeset
|
1671 comment_text = ""; |
16203
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
1672 help_text = ""; |
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
1673 fcn_file_name = ""; |
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
1674 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
|
1675 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
|
1676 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
|
1677 |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1678 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
|
1679 parsed_function_name.pop (); |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1680 |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1681 pending_local_variables.clear (); |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1682 |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1683 nesting_level.reset (); |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1684 |
16230
4bf907906134
use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents:
16229
diff
changeset
|
1685 tokens.clear (); |
16194
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1686 } |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1687 |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1688 int |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1689 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
|
1690 { |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1691 const token *tok = tokens.front (); |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1692 return tok ? tok->token_value () : 0; |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1693 } |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1694 |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1695 bool |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1696 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
|
1697 { |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1698 const token *tok = tokens.front (); |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1699 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
|
1700 } |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1701 |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1702 void |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1703 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
|
1704 { |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1705 token *tok = tokens.front (); |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1706 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
|
1707 tok->mark_trailing_space (); |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1708 } |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1709 |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1710 bool |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1711 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
|
1712 { |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1713 const token *tok = tokens.front (); |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1714 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
|
1715 } |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1716 |
16257
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1717 bool |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1718 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
|
1719 { |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1720 int tok = previous_token_value (); |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
16255
diff
changeset
|
1721 |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1722 return (tok == '+' || tok == '-' || tok == '@' |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1723 || tok == ',' || tok == ';' || tok == '*' || tok == '/' |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1724 || tok == ':' || tok == '=' || tok == ADD_EQ |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1725 || 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
|
1726 || 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
|
1727 || tok == EMINUS || tok == EMUL || tok == EMUL_EQ |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1728 || 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
|
1729 || 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
|
1730 || tok == EXPR_GT || tok == EXPR_LE || tok == EXPR_LT |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
16255
diff
changeset
|
1731 || 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
|
1732 || tok == EXPR_OR_OR || tok == LEFTDIV || tok == LEFTDIV_EQ |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
16255
diff
changeset
|
1733 || tok == LSHIFT || tok == LSHIFT_EQ || tok == MUL_EQ |
db7f07b22b9b
1/10 commits reworking the lexer
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parents:
16255
diff
changeset
|
1734 || tok == OR_EQ || tok == POW || tok == POW_EQ |
db7f07b22b9b
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parents:
16255
diff
changeset
|
1735 || tok == RSHIFT || tok == RSHIFT_EQ || tok == SUB_EQ); |
db7f07b22b9b
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parents:
16255
diff
changeset
|
1736 } |
db7f07b22b9b
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16255
diff
changeset
|
1737 |
db7f07b22b9b
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16255
diff
changeset
|
1738 bool |
db7f07b22b9b
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John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1739 lexical_feedback::previous_token_may_be_command (void) const |
db7f07b22b9b
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parents:
16255
diff
changeset
|
1740 { |
db7f07b22b9b
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John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
1741 const token *tok = tokens.front (); |
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|
1742 return tok ? tok->may_be_command () : false; |
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diff
changeset
|
1743 } |
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diff
changeset
|
1744 |
16228
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|
1745 static bool |
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|
1746 looks_like_copyright (const std::string& s) |
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|
1747 { |
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|
1748 bool retval = false; |
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|
1749 |
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|
1750 if (! s.empty ()) |
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|
1751 { |
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|
1752 size_t offset = s.find_first_not_of (" \t"); |
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|
1753 |
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|
1754 retval = (s.substr (offset, 9) == "Copyright" || s.substr (offset, 6) == "Author"); |
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|
1755 } |
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|
1756 |
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changeset
|
1757 return retval; |
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changeset
|
1758 } |
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|
1759 |
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|
1760 void |
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|
1761 octave_lexer::input_buffer::fill (const std::string& input, bool eof_arg) |
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|
1762 { |
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|
1763 buffer = input; |
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|
1764 chars_left = buffer.length (); |
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|
1765 pos = buffer.c_str (); |
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|
1766 eof = eof_arg; |
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|
1767 } |
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|
1768 |
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|
1769 int |
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|
1770 octave_lexer::input_buffer::copy_chunk (char *buf, size_t max_size) |
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|
1771 { |
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|
1772 static const char * const eol = "\n"; |
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|
1773 |
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|
1774 size_t len = max_size > chars_left ? chars_left : max_size; |
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|
1775 assert (len > 0); |
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1776 |
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1777 memcpy (buf, pos, len); |
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1778 |
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1779 chars_left -= len; |
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|
1780 pos += len; |
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1781 |
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|
1782 // Make sure input ends with a new line character. |
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|
1783 if (chars_left == 0 && buf[len-1] != '\n') |
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|
1784 { |
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|
1785 if (len < max_size) |
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|
1786 { |
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|
1787 // There is enough room to plug the newline character in |
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1788 // the buffer. |
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|
1789 buf[len++] = '\n'; |
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|
1790 } |
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|
1791 else |
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|
1792 { |
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|
1793 // There isn't enough room to plug the newline character |
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|
1794 // in the buffer so arrange to have it returned on the next |
16195
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|
1795 // call to octave_lexer::read. |
16183
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|
1796 pos = eol; |
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changeset
|
1797 chars_left = 1; |
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|
1798 } |
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diff
changeset
|
1799 } |
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diff
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|
1800 |
359d56094efa
handle lexer input buffering with class
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changeset
|
1801 return len; |
359d56094efa
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changeset
|
1802 } |
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|
1803 |
16158
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|
1804 octave_lexer::~octave_lexer (void) |
16114
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diff
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|
1805 { |
16149
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|
1806 yylex_destroy (scanner); |
16114
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|
1807 } |
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|
1808 |
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|
1809 void |
16158
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diff
changeset
|
1810 octave_lexer::init (void) |
16149
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|
1811 { |
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|
1812 yylex_init (&scanner); |
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|
1813 |
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|
1814 // Make octave_lexer object available through yyextra in |
16149
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|
1815 // flex-generated lexer. |
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diff
changeset
|
1816 yyset_extra (this, scanner); |
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diff
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1817 |
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|
1818 clear_start_state (); |
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diff
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|
1819 } |
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|
1820 |
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|
1821 // Inside Flex-generated functions, yyg is the scanner cast to its real |
16224
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|
1822 // type. Some flex macros that we use in octave_lexer member functions |
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diff
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|
1823 // (for example, BEGIN) use yyg. If we could perform the actions of |
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|
1824 // these macros with functions instead, we could eliminate the |
4a848eb52de2
use stack for tracking lexer start states
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1825 // OCTAVE_YYG macro. |
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|
1826 |
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|
1827 #define OCTAVE_YYG \ |
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|
1828 struct yyguts_t *yyg = static_cast<struct yyguts_t*> (scanner) |
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|
1829 |
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|
1830 void |
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|
1831 octave_lexer::reset (void) |
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1832 { |
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|
1833 // Start off on the right foot. |
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|
1834 clear_start_state (); |
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1835 |
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1836 parser_symtab_context.clear (); |
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1837 |
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1838 // We do want a prompt by default. |
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|
1839 promptflag (1); |
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1840 |
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1841 // Only ask for input from stdin if we are expecting interactive |
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1842 // input. |
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|
1843 |
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1844 if (! quitting_gracefully |
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1845 && (interactive || forced_interactive) |
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1846 && ! (reading_fcn_file |
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|
1847 || reading_classdef_file |
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|
1848 || reading_script_file |
16203
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|
1849 || input_from_eval_string ())) |
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|
1850 yyrestart (stdin, scanner); |
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1851 |
16209
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|
1852 input_reader.reset (); |
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|
1853 |
16194
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|
1854 lexical_feedback::reset (); |
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|
1855 } |
a484e39d1f22
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|
1856 |
16124
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|
1857 void |
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|
1858 octave_lexer::prep_for_file (void) |
16124
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|
1859 { |
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|
1860 reading_script_file = true; |
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|
1861 |
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16209
diff
changeset
|
1862 push_start_state (INPUT_FILE_START); |
16124
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move more lexer helper functions to lexical_feedback class
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16123
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|
1863 } |
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16123
diff
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|
1864 |
16121
bdf365c5c9bf
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|
1865 int |
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|
1866 octave_lexer::read (char *buf, unsigned max_size) |
16121
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|
1867 { |
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|
1868 int status = 0; |
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|
1869 |
16183
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|
1870 if (input_buf.empty ()) |
16195
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|
1871 { |
b52d2f9294b6
use class for reading lexer input
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|
1872 bool eof = false; |
16207
0467d68ca891
move current_input_line to lexical_feedback class
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16203
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|
1873 current_input_line = input_reader.get_input (eof); |
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|
1874 input_buf.fill (current_input_line, eof); |
16195
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|
1875 } |
16183
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|
1876 |
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|
1877 if (! input_buf.empty ()) |
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handle lexer input buffering with class
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|
1878 status = input_buf.copy_chunk (buf, max_size); |
16121
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|
1879 else |
bdf365c5c9bf
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|
1880 { |
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|
1881 status = YY_NULL; |
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|
1882 |
16183
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|
1883 if (! input_buf.at_eof ()) |
16195
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use class for reading lexer input
John W. Eaton <jwe@octave.org>
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changeset
|
1884 fatal_error ("octave_lexer::read () in flex scanner failed"); |
16121
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|
1885 } |
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changeset
|
1886 |
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|
1887 return status; |
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John W. Eaton <jwe@octave.org>
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|
1888 } |
bdf365c5c9bf
maint: move function definition in lex.ll
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parents:
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changeset
|
1889 |
16164
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move end_of_input flag from octve_parser class to octave_lexer class
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|
1890 int |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
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|
1891 octave_lexer::handle_end_of_input (void) |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
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|
1892 { |
16229
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use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
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|
1893 lexer_debug ("<<EOF>>"); |
16164
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changeset
|
1894 |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
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|
1895 if (block_comment_nesting_level != 0) |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
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changeset
|
1896 { |
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move end_of_input flag from octve_parser class to octave_lexer class
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changeset
|
1897 warning ("block comment open at end of input"); |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
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parents:
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changeset
|
1898 |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents:
16158
diff
changeset
|
1899 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:
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|
1900 && ! fcn_file_name.empty ()) |
16164
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
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parents:
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diff
changeset
|
1901 warning ("near line %d of file '%s.m'", |
16203
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move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
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|
1902 input_line_number, fcn_file_name.c_str ()); |
16164
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changeset
|
1903 } |
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move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents:
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changeset
|
1904 |
16229
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use functions instead of token return macros in lexer
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|
1905 return handle_token (END_OF_INPUT); |
16164
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move end_of_input flag from octve_parser class to octave_lexer class
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changeset
|
1906 } |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
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|
1907 |
16128
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|
1908 char * |
16158
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rename lexical_feedback to octave_lexer
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|
1909 octave_lexer::flex_yytext (void) |
16128
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|
1910 { |
16149
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parents:
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|
1911 return yyget_text (scanner); |
16128
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John W. Eaton <jwe@octave.org>
parents:
16126
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|
1912 } |
210039e91ad6
localize use of yytext with lexical_feedback member function
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changeset
|
1913 |
16130
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localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16129
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|
1914 int |
16158
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16154
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changeset
|
1915 octave_lexer::flex_yyleng (void) |
16130
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parents:
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changeset
|
1916 { |
16149
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|
1917 return yyget_leng (scanner); |
16130
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16129
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|
1918 } |
421dea028bbf
localize use of yyleng with lexical_feedback member function
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parents:
16129
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changeset
|
1919 |
16114
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|
1920 int |
16158
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John W. Eaton <jwe@octave.org>
parents:
16154
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changeset
|
1921 octave_lexer::text_yyinput (void) |
16114
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* lex.ll: Reorder function definitions.
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parents:
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changeset
|
1922 { |
16149
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|
1923 int c = yyinput (scanner); |
16114
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16113
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changeset
|
1924 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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parents:
16113
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changeset
|
1925 if (lexer_debug_flag) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
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changeset
|
1926 { |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1927 std::cerr << "I: "; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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parents:
16113
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changeset
|
1928 display_character (c); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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parents:
16113
diff
changeset
|
1929 std::cerr << std::endl; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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parents:
16113
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changeset
|
1930 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1931 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1932 // Convert CRLF into just LF and single CR into LF. |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
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changeset
|
1933 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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parents:
16113
diff
changeset
|
1934 if (c == '\r') |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
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changeset
|
1935 { |
16149
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John W. Eaton <jwe@octave.org>
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16148
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changeset
|
1936 c = yyinput (scanner); |
16114
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1937 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1938 if (lexer_debug_flag) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1939 { |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1940 std::cerr << "I: "; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1941 display_character (c); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1942 std::cerr << std::endl; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1943 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1944 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1945 if (c != '\n') |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1946 { |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
1947 xunput (c); |
16114
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1948 c = '\n'; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1949 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1950 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1951 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1952 if (c == '\n') |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1953 input_line_number++; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1954 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1955 return c; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1956 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1957 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1958 void |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
1959 octave_lexer::xunput (char c, char *buf) |
16114
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1960 { |
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
|
1961 if (c != EOF) |
16114
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1962 { |
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
|
1963 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
|
1964 { |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents:
16158
diff
changeset
|
1965 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
|
1966 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
|
1967 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
|
1968 } |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents:
16158
diff
changeset
|
1969 |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents:
16158
diff
changeset
|
1970 if (c == '\n') |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents:
16158
diff
changeset
|
1971 input_line_number--; |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents:
16158
diff
changeset
|
1972 |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents:
16158
diff
changeset
|
1973 yyunput (c, buf, scanner); |
16114
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1974 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1975 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1976 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
1977 void |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
1978 octave_lexer::xunput (char c) |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
1979 { |
16128
210039e91ad6
localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16126
diff
changeset
|
1980 char *yytxt = flex_yytext (); |
16149
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
1981 |
16128
210039e91ad6
localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16126
diff
changeset
|
1982 xunput (c, yytxt); |
16125
96a58f197f93
allow xunput to be called without buffer argument
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1983 } |
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1984 |
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1985 bool |
16158
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|
1986 octave_lexer::inside_any_object_index (void) |
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1987 { |
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|
1988 bool retval = false; |
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|
1989 |
16113
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|
1990 for (std::list<bool>::const_iterator i = looking_at_object_index.begin (); |
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move static lexer helper functions to lexical_feedback class
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1991 i != looking_at_object_index.end (); i++) |
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|
1992 { |
6dc61981d18b
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|
1993 if (*i) |
10315
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|
1994 { |
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|
1995 retval = true; |
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|
1996 break; |
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|
1997 } |
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|
1998 } |
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|
1999 |
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|
2000 return retval; |
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|
2001 } |
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2002 |
4238 | 2003 // Handle keywords. Return -1 if the keyword should be ignored. |
767 | 2004 |
16113
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|
2005 int |
16158
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rename lexical_feedback to octave_lexer
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|
2006 octave_lexer::is_keyword_token (const std::string& s) |
1 | 2007 { |
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|
2008 int l = input_line_number; |
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|
2009 int c = current_input_column; |
3805 | 2010 |
1823 | 2011 int len = s.length (); |
922 | 2012 |
5088 | 2013 const octave_kw *kw = octave_kw_hash::in_word_set (s.c_str (), len); |
191 | 2014 |
1497 | 2015 if (kw) |
143 | 2016 { |
16126
5c885c13bfa3
localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
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|
2017 token *tok_val = 0; |
1497 | 2018 |
2019 switch (kw->kw_id) | |
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2020 { |
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|
2021 case break_kw: |
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2022 case catch_kw: |
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2023 case continue_kw: |
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|
2024 case else_kw: |
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|
2025 case otherwise_kw: |
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|
2026 case return_kw: |
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|
2027 case unwind_protect_cleanup_kw: |
16113
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move static lexer helper functions to lexical_feedback class
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2028 at_beginning_of_statement = true; |
10315
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|
2029 break; |
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|
2030 |
14294
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diff
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|
2031 case static_kw: |
9e3983c8963c
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diff
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|
2032 if ((reading_fcn_file || reading_script_file |
9e3983c8963c
deprecate the static keyword
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diff
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|
2033 || reading_classdef_file) |
16203
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
2034 && ! fcn_file_full_name.empty ()) |
14294
9e3983c8963c
deprecate the static keyword
John W. Eaton <jwe@octave.org>
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diff
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|
2035 warning_with_id ("Octave:deprecated-keyword", |
15468
6437fa7263dd
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15467
diff
changeset
|
2036 "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>
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diff
changeset
|
2037 input_line_number, |
16203
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
2038 fcn_file_full_name.c_str ()); |
14294
9e3983c8963c
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diff
changeset
|
2039 else |
9e3983c8963c
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14292
diff
changeset
|
2040 warning_with_id ("Octave:deprecated-keyword", |
15468
6437fa7263dd
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John W. Eaton <jwe@octave.org>
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15467
diff
changeset
|
2041 "the 'static' keyword is obsolete and will be removed from a future version of Octave; please use 'persistent' instead; near line %d", |
16113
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move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
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changeset
|
2042 input_line_number); |
14294
9e3983c8963c
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14292
diff
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|
2043 // fall through ... |
9e3983c8963c
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diff
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|
2044 |
9e3983c8963c
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John W. Eaton <jwe@octave.org>
parents:
14292
diff
changeset
|
2045 case persistent_kw: |
16263
9acb86e6ac90
4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16261
diff
changeset
|
2046 case global_kw: |
9acb86e6ac90
4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16261
diff
changeset
|
2047 looking_at_decl_list = true; |
14294
9e3983c8963c
deprecate the static keyword
John W. Eaton <jwe@octave.org>
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14292
diff
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|
2048 break; |
9e3983c8963c
deprecate the static keyword
John W. Eaton <jwe@octave.org>
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diff
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|
2049 |
10315
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|
2050 case case_kw: |
57a59eae83cc
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|
2051 case elseif_kw: |
57a59eae83cc
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diff
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|
2052 case until_kw: |
57a59eae83cc
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diff
changeset
|
2053 break; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2054 |
57a59eae83cc
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diff
changeset
|
2055 case end_kw: |
14645
cbc00b587f36
also allow "end" indexing in classdef files
John W. Eaton <jwe@octave.org>
parents:
14642
diff
changeset
|
2056 if (inside_any_object_index () |
cbc00b587f36
also allow "end" indexing in classdef files
John W. Eaton <jwe@octave.org>
parents:
14642
diff
changeset
|
2057 || (! reading_classdef_file |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
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16111
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|
2058 && (defining_func |
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
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16111
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changeset
|
2059 && ! (looking_at_return_list |
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
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16111
diff
changeset
|
2060 || parsed_function_name.top ())))) |
10315
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diff
changeset
|
2061 return 0; |
57a59eae83cc
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10182
diff
changeset
|
2062 |
16255
12bf6a3f8c45
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John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2063 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>
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changeset
|
2064 at_beginning_of_statement = true; |
10315
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untabify src C++ source files
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10182
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changeset
|
2065 break; |
57a59eae83cc
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diff
changeset
|
2066 |
57a59eae83cc
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diff
changeset
|
2067 case end_try_catch_kw: |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
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16253
diff
changeset
|
2068 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>
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changeset
|
2069 at_beginning_of_statement = true; |
10315
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10182
diff
changeset
|
2070 break; |
57a59eae83cc
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diff
changeset
|
2071 |
57a59eae83cc
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
2072 case end_unwind_protect_kw: |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2073 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
|
2074 token::unwind_protect_end, l, c); |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
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16111
diff
changeset
|
2075 at_beginning_of_statement = true; |
10315
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diff
changeset
|
2076 break; |
57a59eae83cc
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10182
diff
changeset
|
2077 |
57a59eae83cc
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diff
changeset
|
2078 case endfor_kw: |
16255
12bf6a3f8c45
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16253
diff
changeset
|
2079 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>
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changeset
|
2080 at_beginning_of_statement = true; |
10315
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changeset
|
2081 break; |
57a59eae83cc
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changeset
|
2082 |
57a59eae83cc
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diff
changeset
|
2083 case endfunction_kw: |
16255
12bf6a3f8c45
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16253
diff
changeset
|
2084 tok_val = new token (endfunction_kw, token::function_end, l, c); |
16113
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move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
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changeset
|
2085 at_beginning_of_statement = true; |
10315
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changeset
|
2086 break; |
57a59eae83cc
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|
2087 |
57a59eae83cc
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changeset
|
2088 case endif_kw: |
16255
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diff
changeset
|
2089 tok_val = new token (endif_kw, token::if_end, l, c); |
16113
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move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
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changeset
|
2090 at_beginning_of_statement = true; |
10315
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changeset
|
2091 break; |
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changeset
|
2092 |
13246 | 2093 case endparfor_kw: |
16255
12bf6a3f8c45
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16253
diff
changeset
|
2094 tok_val = new token (endparfor_kw, token::parfor_end, l, c); |
16113
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move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
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changeset
|
2095 at_beginning_of_statement = true; |
13246 | 2096 break; |
2097 | |
10315
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changeset
|
2098 case endswitch_kw: |
16255
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John W. Eaton <jwe@octave.org>
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16253
diff
changeset
|
2099 tok_val = new token (endswitch_kw, token::switch_end, l, c); |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
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changeset
|
2100 at_beginning_of_statement = true; |
10315
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changeset
|
2101 break; |
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changeset
|
2102 |
57a59eae83cc
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changeset
|
2103 case endwhile_kw: |
16255
12bf6a3f8c45
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16253
diff
changeset
|
2104 tok_val = new token (endwhile_kw, token::while_end, l, c); |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
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changeset
|
2105 at_beginning_of_statement = true; |
10315
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changeset
|
2106 break; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
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11523
diff
changeset
|
2107 |
10315
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diff
changeset
|
2108 case endclassdef_kw: |
16255
12bf6a3f8c45
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diff
changeset
|
2109 tok_val = new token (endclassdef_kw, token::classdef_end, l, c); |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
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changeset
|
2110 at_beginning_of_statement = true; |
10315
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changeset
|
2111 break; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2112 |
13249
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
2113 case endenumeration_kw: |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2114 tok_val = new token (endenumeration_kw, token::enumeration_end, |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2115 l, c); |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2116 at_beginning_of_statement = true; |
13249
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
2117 break; |
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
2118 |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2119 case endevents_kw: |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2120 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
|
2121 at_beginning_of_statement = true; |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2122 break; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2123 |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2124 case endmethods_kw: |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2125 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
|
2126 at_beginning_of_statement = true; |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2127 break; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2128 |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2129 case endproperties_kw: |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2130 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
|
2131 at_beginning_of_statement = true; |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2132 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2133 |
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
|
2134 |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2135 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
|
2136 case parfor_kw: |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2137 case while_kw: |
16209
e7ff32e7cf82
move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents:
16207
diff
changeset
|
2138 decrement_promptflag (); |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2139 looping++; |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2140 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2141 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2142 case do_kw: |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2143 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
|
2144 decrement_promptflag (); |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2145 looping++; |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2146 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2147 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2148 case try_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2149 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
|
2150 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
|
2151 decrement_promptflag (); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2152 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2153 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2154 case if_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2155 case switch_kw: |
16209
e7ff32e7cf82
move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents:
16207
diff
changeset
|
2156 decrement_promptflag (); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2157 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2158 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2159 case get_kw: |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2160 case set_kw: |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2161 // 'get' and 'set' are keywords in classdef method |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2162 // declarations. |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2163 if (! maybe_classdef_get_set_method) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2164 return 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2165 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2166 |
13249
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
2167 case enumeration_kw: |
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
2168 case events_kw: |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2169 case methods_kw: |
13249
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
2170 case properties_kw: |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2171 // 'properties', 'methods' and 'events' are keywords for |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2172 // classdef blocks. |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2173 if (! parsing_classdef) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2174 return 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2175 // fall through ... |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2176 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2177 case classdef_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2178 // '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
|
2179 decrement_promptflag (); |
16203
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
2180 |
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
2181 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
|
2182 { |
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
2183 reading_classdef_file = true; |
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
2184 reading_script_file = false; |
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
2185 } |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2186 break; |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2187 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2188 case function_kw: |
16209
e7ff32e7cf82
move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents:
16207
diff
changeset
|
2189 decrement_promptflag (); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2190 |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2191 defining_func++; |
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2192 parsed_function_name.push (false); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2193 |
16203
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
2194 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
|
2195 { |
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
2196 reading_fcn_file = true; |
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
2197 reading_script_file = false; |
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
2198 } |
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
2199 |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2200 if (! (reading_fcn_file || reading_script_file |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2201 || reading_classdef_file)) |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2202 input_line_number = 1; |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2203 break; |
1497 | 2204 |
3174 | 2205 case magic_file_kw: |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2206 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2207 if ((reading_fcn_file || reading_script_file |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2208 || reading_classdef_file) |
16203
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
2209 && ! fcn_file_full_name.empty ()) |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2210 tok_val = new token (magic_file_kw, fcn_file_full_name, l, c); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2211 else |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2212 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
|
2213 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2214 break; |
3174 | 2215 |
2216 case magic_line_kw: | |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2217 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
|
2218 "", l, c); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2219 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2220 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2221 default: |
57a59eae83cc
untabify src C++ source files
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10182
diff
changeset
|
2222 panic_impossible (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2223 } |
1497 | 2224 |
16126
5c885c13bfa3
localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents:
16125
diff
changeset
|
2225 if (! tok_val) |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2226 tok_val = new token (kw->tok, 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
|
2227 |
16148
10abbc493f50
delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents:
16146
diff
changeset
|
2228 push_token (tok_val); |
1497 | 2229 |
2230 return kw->tok; | |
143 | 2231 } |
1 | 2232 |
2233 return 0; | |
2234 } | |
2235 | |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2236 bool |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
2237 octave_lexer::is_variable (const std::string& name) |
2702 | 2238 { |
8001
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7898
diff
changeset
|
2239 return (symbol_table::is_variable (name) |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2240 || (pending_local_variables.find (name) |
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2241 != pending_local_variables.end ())); |
2702 | 2242 } |
2243 | |
16257
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
2244 bool |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
2245 octave_lexer::whitespace_is_significant (void) |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
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|
2246 { |
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2247 return (nesting_level.is_bracket () |
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|
2248 || (nesting_level.is_brace () |
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2249 && ! looking_at_object_index.front ())); |
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2250 } |
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|
2251 |
3220 | 2252 static inline bool |
2253 looks_like_hex (const char *s, int len) | |
2254 { | |
2255 return (len > 2 && s[0] == '0' && (s[1] == 'x' || s[1] == 'X')); | |
2256 } | |
2257 | |
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2258 void |
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2259 octave_lexer::handle_number (void) |
972 | 2260 { |
3220 | 2261 double value = 0.0; |
2262 int nread = 0; | |
2263 | |
16128
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2264 char *yytxt = flex_yytext (); |
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2265 |
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|
2266 if (looks_like_hex (yytxt, strlen (yytxt))) |
3220 | 2267 { |
2268 unsigned long ival; | |
3598 | 2269 |
16128
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2270 nread = sscanf (yytxt, "%lx", &ival); |
3598 | 2271 |
3220 | 2272 value = static_cast<double> (ival); |
2273 } | |
2274 else | |
3598 | 2275 { |
16128
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|
2276 char *tmp = strsave (yytxt); |
3598 | 2277 |
2278 char *idx = strpbrk (tmp, "Dd"); | |
2621 | 2279 |
3598 | 2280 if (idx) |
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|
2281 *idx = 'e'; |
3598 | 2282 |
2283 nread = sscanf (tmp, "%lf", &value); | |
2284 | |
2285 delete [] tmp; | |
2286 } | |
972 | 2287 |
1826 | 2288 // If yytext doesn't contain a valid number, we are in deep doo doo. |
985 | 2289 |
972 | 2290 assert (nread == 1); |
2291 | |
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2292 looking_for_object_index = false; |
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2293 at_beginning_of_statement = false; |
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2294 |
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2295 push_token (new token (NUM, value, yytxt, input_line_number, |
16148
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|
2296 current_input_column)); |
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2297 |
16130
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|
2298 current_input_column += flex_yyleng (); |
972 | 2299 } |
2300 | |
16253
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2301 void |
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2302 octave_lexer::handle_continuation (void) |
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2303 { |
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2304 char *yytxt = flex_yytext (); |
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2305 int yylng = flex_yyleng (); |
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2306 |
16257
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2307 int offset = 1; |
16253
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2308 if (yytxt[0] == '\\') |
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2309 gripe_matlab_incompatible_continuation (); |
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2310 else |
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2311 offset = 3; |
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2312 |
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2313 bool have_space = false; |
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2314 while (offset < yylng) |
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2315 { |
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2316 char c = yytxt[offset]; |
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2317 if (c == ' ' || c == '\t') |
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2318 { |
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2319 have_space = true; |
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|
2320 offset++; |
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|
2321 } |
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|
2322 else |
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|
2323 break; |
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|
2324 } |
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|
2325 |
16255
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|
2326 if (have_space) |
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2327 mark_previous_token_trailing_space (); |
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2328 |
16253
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2329 bool have_comment = false; |
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2330 while (offset < yylng) |
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2331 { |
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|
2332 char c = yytxt[offset]; |
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2333 if (c == '#' || c == '%') |
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|
2334 { |
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2335 have_comment = true; |
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|
2336 offset++; |
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|
2337 } |
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|
2338 else |
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|
2339 break; |
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|
2340 } |
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2341 |
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2342 if (have_comment) |
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|
2343 { |
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|
2344 comment_text = &yytxt[offset]; |
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|
2345 |
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|
2346 finish_comment (octave_comment_elt::end_of_line, true); |
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|
2347 } |
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|
2348 |
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|
2349 decrement_promptflag (); |
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|
2350 input_line_number++; |
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|
2351 current_input_column = 1; |
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2352 } |
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|
2353 |
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|
2354 void |
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|
2355 octave_lexer::finish_comment (octave_comment_elt::comment_type typ, |
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|
2356 bool looking_at_continuation) |
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|
2357 { |
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|
2358 bool copyright = looks_like_copyright (comment_text); |
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|
2359 |
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|
2360 if (nesting_level.none () && help_text.empty () |
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|
2361 && ! comment_text.empty () && ! copyright) |
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|
2362 help_text = comment_text; |
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2363 |
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2364 if (copyright) |
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2365 typ = octave_comment_elt::copyright; |
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2366 |
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2367 octave_comment_buffer::append (comment_text, typ); |
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2368 |
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2369 comment_text = ""; |
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2370 |
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2371 at_beginning_of_statement = true; |
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2372 |
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2373 if (! looking_at_continuation) |
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2374 xunput ('\n'); |
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2375 } |
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2376 |
1001 | 2377 // We have seen a backslash and need to find out if it should be |
2378 // treated as a continuation character. If so, this eats it, up to | |
2379 // and including the new line character. | |
2380 // | |
973 | 2381 // Match whitespace only, followed by a comment character or newline. |
2382 // Once a comment character is found, discard all input until newline. | |
2383 // If non-whitespace characters are found before comment | |
2384 // characters, return 0. Otherwise, return 1. | |
2385 | |
7723
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2386 // FIXME -- we need to handle block comments here. |
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2387 |
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2388 bool |
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|
2389 octave_lexer::have_continuation (bool trailing_comments_ok) |
973 | 2390 { |
5765 | 2391 std::ostringstream buf; |
973 | 2392 |
3665 | 2393 std::string comment_buf; |
2394 | |
2857 | 2395 bool in_comment = false; |
3665 | 2396 bool beginning_of_comment = false; |
2397 | |
2398 int c = 0; | |
2399 | |
7728
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2400 while ((c = text_yyinput ()) != EOF) |
973 | 2401 { |
3802 | 2402 buf << static_cast<char> (c); |
973 | 2403 |
2404 switch (c) | |
10315
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2405 { |
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2406 case ' ': |
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2407 case '\t': |
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2408 if (in_comment) |
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2409 { |
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2410 comment_buf += static_cast<char> (c); |
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2411 beginning_of_comment = false; |
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2412 } |
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2413 break; |
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2414 |
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2415 case '%': |
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|
2416 case '#': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2417 if (trailing_comments_ok) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2418 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2419 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2420 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2421 if (! beginning_of_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2422 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2423 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2424 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2425 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2426 maybe_gripe_matlab_incompatible_comment (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2427 in_comment = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2428 beginning_of_comment = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2429 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2430 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2431 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2432 goto cleanup; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2433 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2434 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2435 case '\n': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2436 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2437 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2438 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2439 octave_comment_buffer::append (comment_buf); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2440 } |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2441 current_input_column = 0; |
16209
e7ff32e7cf82
move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents:
16207
diff
changeset
|
2442 decrement_promptflag (); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2443 gripe_matlab_incompatible_continuation (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2444 return true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2445 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2446 default: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2447 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2448 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2449 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2450 beginning_of_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2451 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2452 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2453 goto cleanup; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2454 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2455 } |
973 | 2456 } |
2457 | |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2458 xunput (c); |
2857 | 2459 return false; |
973 | 2460 |
3096 | 2461 cleanup: |
4051 | 2462 |
5765 | 2463 std::string s = buf.str (); |
4051 | 2464 |
2465 int len = s.length (); | |
2466 while (len--) | |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2467 xunput (s[len]); |
3096 | 2468 |
2857 | 2469 return false; |
973 | 2470 } |
2471 | |
15466
d174210ce1ec
use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents:
14161
diff
changeset
|
2472 // We have seen a '.' and need to see if it is the start of a |
1001 | 2473 // continuation. If so, this eats it, up to and including the new |
2474 // line character. | |
2475 | |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2476 bool |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
2477 octave_lexer::have_ellipsis_continuation (bool trailing_comments_ok) |
973 | 2478 { |
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
|
2479 char c1 = text_yyinput (); |
973 | 2480 if (c1 == '.') |
2481 { | |
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
|
2482 char c2 = text_yyinput (); |
1091 | 2483 if (c2 == '.' && have_continuation (trailing_comments_ok)) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2484 return true; |
973 | 2485 else |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2486 { |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2487 xunput (c2); |
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2488 xunput (c1); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2489 } |
973 | 2490 } |
2491 else | |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2492 xunput (c1); |
973 | 2493 |
2857 | 2494 return false; |
973 | 2495 } |
2496 | |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2497 int |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
2498 octave_lexer::handle_string (char delim) |
973 | 2499 { |
5765 | 2500 std::ostringstream buf; |
973 | 2501 |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2502 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
|
2503 int bos_col = current_input_column; |
3805 | 2504 |
973 | 2505 int c; |
1031 | 2506 int escape_pending = 0; |
973 | 2507 |
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
|
2508 while ((c = text_yyinput ()) != EOF) |
973 | 2509 { |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2510 current_input_column++; |
973 | 2511 |
3105 | 2512 if (c == '\\') |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2513 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2514 if (delim == '\'' || escape_pending) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2515 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2516 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2517 escape_pending = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2518 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2519 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2520 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2521 if (have_continuation (false)) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2522 escape_pending = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2523 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2524 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2525 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2526 escape_pending = 1; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2527 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2528 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2529 continue; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2530 } |
973 | 2531 else if (c == '.') |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2532 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2533 if (delim == '\'' || ! have_ellipsis_continuation (false)) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2534 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2535 } |
973 | 2536 else if (c == '\n') |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2537 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2538 error ("unterminated string constant"); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2539 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2540 } |
973 | 2541 else if (c == delim) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2542 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2543 if (escape_pending) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2544 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2545 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2546 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2547 c = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2548 if (c == delim) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2549 { |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2550 buf << static_cast<char> (c); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2551 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2552 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2553 { |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2554 std::string s; |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2555 xunput (c); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2556 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2557 if (delim == '\'') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2558 s = buf.str (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2559 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2560 s = do_string_escapes (buf.str ()); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2561 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2562 if (delim == '"') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2563 gripe_matlab_incompatible ("\" used as string delimiter"); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2564 else if (delim == '\'') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2565 gripe_single_quote_string (); |
3400 | 2566 |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2567 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
|
2568 at_beginning_of_statement = false; |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2569 |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2570 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
|
2571 |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2572 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
|
2573 |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2574 return tok; |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2575 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2576 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2577 } |
973 | 2578 else |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2579 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2580 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2581 } |
973 | 2582 |
1031 | 2583 escape_pending = 0; |
973 | 2584 } |
2585 | |
2586 return LEXICAL_ERROR; | |
2587 } | |
2588 | |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2589 int |
16259
0b5ab09dfce4
2/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16257
diff
changeset
|
2590 octave_lexer::handle_close_bracket (int bracket_type) |
971 | 2591 { |
4612 | 2592 int retval = bracket_type; |
3208 | 2593 |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2594 if (! nesting_level.none ()) |
971 | 2595 { |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2596 nesting_level.remove (); |
4613 | 2597 |
2598 if (bracket_type == ']') | |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2599 bracketflag--; |
4613 | 2600 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
|
2601 braceflag--; |
4613 | 2602 else |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2603 panic_impossible (); |
971 | 2604 } |
2605 | |
16224
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
2606 pop_start_state (); |
1001 | 2607 |
3208 | 2608 return retval; |
971 | 2609 } |
2610 | |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2611 bool |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
2612 octave_lexer::next_token_can_follow_bin_op (void) |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2613 { |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2614 std::stack<char> buf; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2615 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2616 int c = EOF; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2617 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2618 // Skip whitespace in current statement on current line |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2619 while (true) |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2620 { |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2621 c = text_yyinput (); |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2622 |
8767
026c6732ec7a
lex.l (next_token_can_follow_bin_op): push all characters read on to buffer stack
John W. Eaton <jwe@octave.org>
parents:
8746
diff
changeset
|
2623 buf.push (c); |
026c6732ec7a
lex.l (next_token_can_follow_bin_op): push all characters read on to buffer stack
John W. Eaton <jwe@octave.org>
parents:
8746
diff
changeset
|
2624 |
026c6732ec7a
lex.l (next_token_can_follow_bin_op): push all characters read on to buffer stack
John W. Eaton <jwe@octave.org>
parents:
8746
diff
changeset
|
2625 if (match_any (c, ",;\n") || (c != ' ' && c != '\t')) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2626 break; |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2627 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2628 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2629 // Restore input. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2630 while (! buf.empty ()) |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2631 { |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2632 xunput (buf.top ()); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2633 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2634 buf.pop (); |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2635 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2636 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2637 return (isalnum (c) || match_any (c, "!\"'(-[_{~")); |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2638 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2639 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2640 static bool |
10052
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
2641 can_be_command (const std::string& tok) |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
2642 { |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
2643 // Don't allow these names to be treated as commands to avoid |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
2644 // surprises when parsing things like "NaN ^2". |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
2645 |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
2646 return ! (tok == "e" |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
2647 || tok == "I" || tok == "i" |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
2648 || tok == "J" || tok == "j" |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
2649 || tok == "Inf" || tok == "inf" |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
2650 || tok == "NaN" || tok == "nan"); |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
2651 } |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
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 bool |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
2654 octave_lexer::looks_like_command_arg (void) |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2655 { |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2656 bool retval = true; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2657 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2658 int c0 = text_yyinput (); |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2659 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2660 switch (c0) |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2661 { |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2662 // = == |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2663 case '=': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2664 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2665 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2666 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2667 if (c1 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2668 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2669 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2670 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2671 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2672 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2673 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2674 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2675 xunput (c2); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2676 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2677 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2678 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2679 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2680 xunput (c1); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2681 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2682 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2683 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2684 case '(': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2685 case '{': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2686 // Indexing. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2687 retval = false; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2688 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2689 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2690 case '\n': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2691 // EOL. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2692 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2693 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2694 case '\'': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2695 case '"': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2696 // Beginning of a character string. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2697 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2698 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2699 // + - ++ -- += -= |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2700 case '+': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2701 case '-': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2702 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2703 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2704 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2705 switch (c1) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2706 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2707 case '\n': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2708 // EOL. |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2709 case '+': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2710 case '-': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2711 // Unary ops, spacing doesn't matter. |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2712 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2713 |
57a59eae83cc
untabify src C++ source files
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parents:
10182
diff
changeset
|
2714 case '\t': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2715 case ' ': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2716 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2717 if (next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2718 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2719 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2720 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2721 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2722 case '=': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2723 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2724 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2725 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2726 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2727 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2728 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2729 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2730 xunput (c2); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2731 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2732 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2733 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2734 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2735 xunput (c1); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2736 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2737 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2738 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2739 case ':': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2740 case '/': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2741 case '\\': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2742 case '^': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2743 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2744 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2745 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2746 if (! match_any (c1, ",;\n") && (c1 == ' ' || c1 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2747 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2748 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2749 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2750 xunput (c1); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2751 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2752 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2753 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2754 // .+ .- ./ .\ .^ .* .** |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2755 case '.': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2756 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2757 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2758 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2759 if (match_any (c1, "+-/\\^*")) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2760 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2761 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2762 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2763 if (c2 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2764 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2765 int c3 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2766 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2767 if (! match_any (c3, ",;\n") && (c3 == ' ' || c3 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2768 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2769 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2770 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2771 xunput (c3); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2772 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2773 else if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2774 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2775 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2776 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2777 xunput (c2); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2778 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2779 else if (! match_any (c1, ",;\n") |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2780 && (! isdigit (c1) && c1 != ' ' && c1 != '\t' |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2781 && c1 != '.')) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2782 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2783 // Structure reference. FIXME -- is this a complete check? |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2784 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2785 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2786 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2787 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2788 xunput (c1); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2789 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2790 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2791 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2792 // & && | || * ** |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2793 case '&': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2794 case '|': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2795 case '*': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2796 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2797 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2798 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2799 if (c1 == c0) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2800 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2801 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2802 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2803 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2804 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2805 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2806 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2807 xunput (c2); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2808 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2809 else if (! match_any (c1, ",;\n") && (c1 == ' ' || c1 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2810 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2811 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2812 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2813 xunput (c1); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2814 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2815 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2816 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2817 // < <= > >= |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2818 case '<': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2819 case '>': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2820 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2821 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2822 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2823 if (c1 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2824 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2825 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2826 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2827 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2828 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2829 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2830 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2831 xunput (c2); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2832 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2833 else if (! match_any (c1, ",;\n") && (c1 == ' ' || c1 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2834 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2835 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2836 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2837 xunput (c1); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2838 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2839 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2840 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2841 // ~= != |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2842 case '~': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2843 case '!': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2844 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2845 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2846 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2847 // ~ and ! can be unary ops, so require following =. |
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untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2848 if (c1 == '=') |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2849 { |
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diff
changeset
|
2850 int c2 = text_yyinput (); |
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untabify src C++ source files
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diff
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|
2851 |
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
2852 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
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changeset
|
2853 && next_token_can_follow_bin_op ()) |
57a59eae83cc
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
2854 retval = false; |
57a59eae83cc
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10182
diff
changeset
|
2855 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
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16124
diff
changeset
|
2856 xunput (c2); |
10315
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John W. Eaton <jwe@octave.org>
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10182
diff
changeset
|
2857 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2858 else if (! match_any (c1, ",;\n") && (c1 == ' ' || c1 == '\t') |
57a59eae83cc
untabify src C++ source files
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|
2859 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2860 retval = false; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2861 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2862 xunput (c1); |
8746
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handle commands in the lexer
John W. Eaton <jwe@octave.org>
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diff
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|
2863 } |
5dd06f19e9be
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
2864 break; |
5dd06f19e9be
handle commands in the lexer
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diff
changeset
|
2865 |
5dd06f19e9be
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John W. Eaton <jwe@octave.org>
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diff
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|
2866 default: |
5dd06f19e9be
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diff
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|
2867 break; |
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handle commands in the lexer
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diff
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|
2868 } |
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|
2869 |
16125
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|
2870 xunput (c0); |
8746
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handle commands in the lexer
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diff
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|
2871 |
5dd06f19e9be
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|
2872 return retval; |
5dd06f19e9be
handle commands in the lexer
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diff
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|
2873 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
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|
2874 |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
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|
2875 int |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
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diff
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|
2876 octave_lexer::handle_superclass_identifier (void) |
9476 | 2877 { |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
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11523
diff
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|
2878 std::string pkg; |
16128
210039e91ad6
localize use of yytext with lexical_feedback member function
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|
2879 char *yytxt = flex_yytext (); |
210039e91ad6
localize use of yytext with lexical_feedback member function
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diff
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|
2880 std::string meth = strip_trailing_whitespace (yytxt); |
9476 | 2881 size_t pos = meth.find ("@"); |
2882 std::string cls = meth.substr (pos).substr (1); | |
11586
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strip trailing whitespace from source files
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|
2883 meth = meth.substr (0, pos - 1); |
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|
2884 |
9476 | 2885 pos = cls.find ("."); |
2886 if (pos != std::string::npos) | |
11586
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diff
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|
2887 { |
9476 | 2888 pkg = cls.substr (pos).substr (1); |
2889 cls = cls.substr (0, pos - 1); | |
2890 } | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
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diff
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|
2891 |
9476 | 2892 int kw_token = (is_keyword_token (meth) || is_keyword_token (cls) |
10315
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untabify src C++ source files
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|
2893 || is_keyword_token (pkg)); |
9476 | 2894 if (kw_token) |
2895 { | |
2896 error ("method, class and package names may not be keywords"); | |
2897 return LEXICAL_ERROR; | |
2898 } | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2899 |
16255
12bf6a3f8c45
store more info in token value class
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diff
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|
2900 push_token (new token (SUPERCLASSREF, |
12bf6a3f8c45
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changeset
|
2901 meth.empty () ? 0 : &(symbol_table::insert (meth)), |
16148
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delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
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diff
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|
2902 cls.empty () ? 0 : &(symbol_table::insert (cls)), |
10abbc493f50
delete unnecessary X-> references inside class X member functions
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diff
changeset
|
2903 pkg.empty () ? 0 : &(symbol_table::insert (pkg)), |
10abbc493f50
delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2904 input_line_number, current_input_column)); |
16113
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move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
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|
2905 |
16130
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localize use of yyleng with lexical_feedback member function
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changeset
|
2906 current_input_column += flex_yyleng (); |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
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diff
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|
2907 |
9476 | 2908 return SUPERCLASSREF; |
2909 } | |
2910 | |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
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|
2911 int |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2912 octave_lexer::handle_meta_identifier (void) |
9476 | 2913 { |
2914 std::string pkg; | |
16128
210039e91ad6
localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
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changeset
|
2915 char *yytxt = flex_yytext (); |
210039e91ad6
localize use of yytext with lexical_feedback member function
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diff
changeset
|
2916 std::string cls = strip_trailing_whitespace (yytxt).substr (1); |
9476 | 2917 size_t pos = cls.find ("."); |
11586
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strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
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|
2918 |
9476 | 2919 if (pos != std::string::npos) |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2920 { |
9476 | 2921 pkg = cls.substr (pos).substr (1); |
2922 cls = cls.substr (0, pos - 1); | |
2923 } | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2924 |
9476 | 2925 int kw_token = is_keyword_token (cls) || is_keyword_token (pkg); |
2926 if (kw_token) | |
2927 { | |
2928 error ("class and package names may not be keywords"); | |
2929 return LEXICAL_ERROR; | |
2930 } | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2931 |
16255
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store more info in token value class
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2932 push_token (new token (METAQUERY, |
12bf6a3f8c45
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|
2933 cls.empty () ? 0 : &(symbol_table::insert (cls)), |
16148
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John W. Eaton <jwe@octave.org>
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|
2934 pkg.empty () ? 0 : &(symbol_table::insert (pkg)), |
10abbc493f50
delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2935 input_line_number, current_input_column)); |
16113
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move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
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|
2936 |
16130
421dea028bbf
localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2937 current_input_column += flex_yyleng (); |
11586
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strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2938 |
9476 | 2939 return METAQUERY; |
2940 } | |
2941 | |
767 | 2942 // Figure out exactly what kind of token to return when we have seen |
4238 | 2943 // an identifier. Handles keywords. Return -1 if the identifier |
2944 // should be ignored. | |
767 | 2945 |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
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changeset
|
2946 int |
16158
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rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2947 octave_lexer::handle_identifier (void) |
146 | 2948 { |
16128
210039e91ad6
localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
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changeset
|
2949 char *yytxt = flex_yytext (); |
210039e91ad6
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changeset
|
2950 |
16257
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diff
changeset
|
2951 std::string tok = yytxt; |
16128
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diff
changeset
|
2952 |
2970 | 2953 // If we are expecting a structure element, avoid recognizing |
2954 // keywords and other special names and return STRUCT_ELT, which is | |
2955 // a string that is also a valid identifier. But first, we have to | |
2956 // decide whether to insert a comma. | |
747 | 2957 |
16113
7c5e5e97a3bc
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John W. Eaton <jwe@octave.org>
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changeset
|
2958 if (looking_at_indirect_ref) |
1072 | 2959 { |
16255
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diff
changeset
|
2960 push_token (new token (STRUCT_ELT, tok, input_line_number, |
16148
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diff
changeset
|
2961 current_input_column)); |
16113
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move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2962 |
7c5e5e97a3bc
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diff
changeset
|
2963 looking_for_object_index = true; |
7c5e5e97a3bc
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|
2964 |
16130
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diff
changeset
|
2965 current_input_column += flex_yyleng (); |
2819 | 2966 |
16257
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changeset
|
2967 at_beginning_of_statement = false; |
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diff
changeset
|
2968 |
2970 | 2969 return STRUCT_ELT; |
1072 | 2970 } |
747 | 2971 |
8746
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handle commands in the lexer
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changeset
|
2972 // The is_keyword_token may reset |
16113
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diff
changeset
|
2973 // at_beginning_of_statement. For example, if it sees |
8746
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changeset
|
2974 // an else token, then the next token is at the beginning of a |
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diff
changeset
|
2975 // statement. |
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|
2976 |
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diff
changeset
|
2977 // May set begenning_of_statement to true. |
4930 | 2978 int kw_token = is_keyword_token (tok); |
2979 | |
8746
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changeset
|
2980 // If we found a keyword token, then the beginning_of_statement flag |
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diff
changeset
|
2981 // is already set. Otherwise, we won't be at the beginning of a |
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changeset
|
2982 // statement. |
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changeset
|
2983 |
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changeset
|
2984 if (looking_at_function_handle) |
4930 | 2985 { |
2986 if (kw_token) | |
10315
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changeset
|
2987 { |
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changeset
|
2988 error ("function handles may not refer to keywords"); |
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changeset
|
2989 |
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changeset
|
2990 return LEXICAL_ERROR; |
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changeset
|
2991 } |
4930 | 2992 else |
10315
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|
2993 { |
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changeset
|
2994 push_token (new token (FCN_HANDLE, tok, input_line_number, |
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changeset
|
2995 current_input_column)); |
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changeset
|
2996 |
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changeset
|
2997 current_input_column += flex_yyleng (); |
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changeset
|
2998 looking_for_object_index = true; |
10315
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changeset
|
2999 |
16257
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changeset
|
3000 at_beginning_of_statement = false; |
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changeset
|
3001 |
10315
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diff
changeset
|
3002 return FCN_HANDLE; |
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changeset
|
3003 } |
4930 | 3004 } |
3005 | |
5102 | 3006 // If we have a regular keyword, return it. |
7722
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changeset
|
3007 // Keywords can be followed by identifiers. |
146 | 3008 |
3009 if (kw_token) | |
3010 { | |
7722
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changeset
|
3011 if (kw_token >= 0) |
10315
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changeset
|
3012 { |
16130
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changeset
|
3013 current_input_column += flex_yyleng (); |
16113
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parents:
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diff
changeset
|
3014 looking_for_object_index = false; |
10315
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parents:
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changeset
|
3015 } |
7722
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changeset
|
3016 |
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changeset
|
3017 return kw_token; |
146 | 3018 } |
3019 | |
1826 | 3020 // See if we have a plot keyword (title, using, with, or clear). |
146 | 3021 |
7728
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parents:
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diff
changeset
|
3022 int c1 = text_yyinput (); |
3480 | 3023 |
3024 bool next_tok_is_eq = false; | |
3025 if (c1 == '=') | |
3026 { | |
7728
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3027 int c2 = text_yyinput (); |
16125
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allow xunput to be called without buffer argument
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parents:
16124
diff
changeset
|
3028 xunput (c2); |
3480 | 3029 |
3030 if (c2 != '=') | |
10315
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parents:
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changeset
|
3031 next_tok_is_eq = true; |
3480 | 3032 } |
3033 | |
16125
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parents:
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diff
changeset
|
3034 xunput (c1); |
1001 | 3035 |
2702 | 3036 // Kluge alert. |
3037 // | |
3038 // If we are looking at a text style function, set up to gobble its | |
2745 | 3039 // arguments. |
3040 // | |
15466
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parents:
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changeset
|
3041 // If the following token is '=', or if we are parsing a function |
3189 | 3042 // return list or function parameter list, or if we are looking at |
3043 // something like [ab,cd] = foo (), force the symbol to be inserted | |
3044 // as a variable in the current symbol table. | |
2702 | 3045 |
8746
5dd06f19e9be
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parents:
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diff
changeset
|
3046 if (! is_variable (tok)) |
2702 | 3047 { |
16257
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parents:
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changeset
|
3048 if (next_tok_is_eq |
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parents:
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diff
changeset
|
3049 || looking_at_decl_list |
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parents:
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diff
changeset
|
3050 || looking_at_return_list |
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parents:
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changeset
|
3051 || (looking_at_parameter_list |
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diff
changeset
|
3052 && ! looking_at_initializer_expression)) |
10315
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changeset
|
3053 { |
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parents:
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diff
changeset
|
3054 symbol_table::force_variable (tok); |
57a59eae83cc
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parents:
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changeset
|
3055 } |
16113
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parents:
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diff
changeset
|
3056 else if (looking_at_matrix_or_assign_lhs) |
10315
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parents:
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diff
changeset
|
3057 { |
16113
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parents:
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diff
changeset
|
3058 pending_local_variables.insert (tok); |
10315
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parents:
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diff
changeset
|
3059 } |
2702 | 3060 } |
3061 | |
4234 | 3062 // Find the token in the symbol table. Beware the magic |
3063 // transformation of the end keyword... | |
3064 | |
3065 if (tok == "end") | |
11586
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parents:
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diff
changeset
|
3066 tok = "__end__"; |
146 | 3067 |
16257
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|
3068 token *tok_val = new token (NAME, &(symbol_table::insert (tok)), |
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parents:
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diff
changeset
|
3069 input_line_number, current_input_column); |
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changeset
|
3070 |
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changeset
|
3071 if (at_beginning_of_statement) |
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changeset
|
3072 tok_val->mark_may_be_command (); |
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changeset
|
3073 |
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parents:
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diff
changeset
|
3074 push_token (tok_val); |
146 | 3075 |
16130
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localize use of yyleng with lexical_feedback member function
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parents:
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diff
changeset
|
3076 current_input_column += flex_yyleng (); |
146 | 3077 |
9324
29563379fa9b
don't look for object index after keyword
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parents:
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changeset
|
3078 if (tok != "__end__") |
16113
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parents:
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changeset
|
3079 looking_for_object_index = true; |
9324
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|
3080 |
16257
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changeset
|
3081 at_beginning_of_statement = false; |
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changeset
|
3082 |
146 | 3083 return NAME; |
3084 } | |
3085 | |
16113
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parents:
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changeset
|
3086 void |
16158
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parents:
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diff
changeset
|
3087 octave_lexer::maybe_warn_separator_insert (char sep) |
3388 | 3088 { |
16203
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3089 std::string nm = fcn_file_full_name; |
3388 | 3090 |
5794 | 3091 if (nm.empty ()) |
3092 warning_with_id ("Octave:separator-insert", | |
15466
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parents:
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diff
changeset
|
3093 "potential auto-insertion of '%c' near line %d", |
16113
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parents:
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changeset
|
3094 sep, input_line_number); |
5794 | 3095 else |
3096 warning_with_id ("Octave:separator-insert", | |
15466
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parents:
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changeset
|
3097 "potential auto-insertion of '%c' near line %d of file %s", |
16113
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parents:
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diff
changeset
|
3098 sep, input_line_number, nm.c_str ()); |
3388 | 3099 } |
3100 | |
16113
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parents:
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diff
changeset
|
3101 void |
16158
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parents:
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diff
changeset
|
3102 octave_lexer::gripe_single_quote_string (void) |
3400 | 3103 { |
16203
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parents:
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diff
changeset
|
3104 std::string nm = fcn_file_full_name; |
3400 | 3105 |
5794 | 3106 if (nm.empty ()) |
3107 warning_with_id ("Octave:single-quote-string", | |
10315
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parents:
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changeset
|
3108 "single quote delimited string near line %d", |
16113
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move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3109 input_line_number); |
5794 | 3110 else |
3111 warning_with_id ("Octave:single-quote-string", | |
10315
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parents:
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changeset
|
3112 "single quote delimited string near line %d of file %s", |
16113
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move static lexer helper functions to lexical_feedback class
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parents:
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diff
changeset
|
3113 input_line_number, nm.c_str ()); |
3400 | 3114 } |
3115 | |
16113
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parents:
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diff
changeset
|
3116 void |
16158
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3117 octave_lexer::gripe_matlab_incompatible (const std::string& msg) |
4037 | 3118 { |
16203
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parents:
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diff
changeset
|
3119 std::string nm = fcn_file_full_name; |
8974
fde2a916b2ac
include line and file info in parser warnings
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parents:
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changeset
|
3120 |
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parents:
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changeset
|
3121 if (nm.empty ()) |
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include line and file info in parser warnings
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parents:
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changeset
|
3122 warning_with_id ("Octave:matlab-incompatible", |
10315
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parents:
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diff
changeset
|
3123 "potential Matlab compatibility problem: %s", |
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untabify src C++ source files
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parents:
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changeset
|
3124 msg.c_str ()); |
8974
fde2a916b2ac
include line and file info in parser warnings
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parents:
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changeset
|
3125 else |
fde2a916b2ac
include line and file info in parser warnings
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parents:
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changeset
|
3126 warning_with_id ("Octave:matlab-incompatible", |
10315
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untabify src C++ source files
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parents:
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diff
changeset
|
3127 "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:
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diff
changeset
|
3128 msg.c_str (), input_line_number, nm.c_str ()); |
4037 | 3129 } |
3130 | |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
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parents:
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diff
changeset
|
3131 void |
16158
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parents:
16154
diff
changeset
|
3132 octave_lexer::maybe_gripe_matlab_incompatible_comment (char c) |
4037 | 3133 { |
3134 if (c == '#') | |
3135 gripe_matlab_incompatible ("# used as comment character"); | |
3136 } | |
3137 | |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3138 void |
16158
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parents:
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diff
changeset
|
3139 octave_lexer::gripe_matlab_incompatible_continuation (void) |
4037 | 3140 { |
3141 gripe_matlab_incompatible ("\\ used as line continuation marker"); | |
3142 } | |
3143 | |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3144 void |
16158
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rename lexical_feedback to octave_lexer
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parents:
16154
diff
changeset
|
3145 octave_lexer::gripe_matlab_incompatible_operator (const std::string& op) |
4037 | 3146 { |
3147 std::string t = op; | |
3148 int n = t.length (); | |
3149 if (t[n-1] == '\n') | |
3150 t.resize (n-1); | |
3151 gripe_matlab_incompatible (t + " used as operator"); | |
3152 } | |
16119
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maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3153 |
b31eb56f4d84
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16118
diff
changeset
|
3154 void |
16158
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parents:
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diff
changeset
|
3155 octave_lexer::push_token (token *tok) |
16126
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localize use of yylval.tok_val in lexical_feedback member functions
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diff
changeset
|
3156 { |
16149
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use pure parser and reentrant lexer interfaces
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parents:
16148
diff
changeset
|
3157 YYSTYPE *lval = yyget_lval (scanner); |
49dfba4fd3c5
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parents:
16148
diff
changeset
|
3158 lval->tok_val = tok; |
16230
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use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents:
16229
diff
changeset
|
3159 tokens.push (tok); |
16126
5c885c13bfa3
localize use of yylval.tok_val in lexical_feedback member functions
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parents:
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diff
changeset
|
3160 } |
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diff
changeset
|
3161 |
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diff
changeset
|
3162 token * |
16158
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rename lexical_feedback to octave_lexer
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diff
changeset
|
3163 octave_lexer::current_token (void) |
16126
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localize use of yylval.tok_val in lexical_feedback member functions
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diff
changeset
|
3164 { |
16149
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
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diff
changeset
|
3165 YYSTYPE *lval = yyget_lval (scanner); |
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use pure parser and reentrant lexer interfaces
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diff
changeset
|
3166 return lval->tok_val; |
16126
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diff
changeset
|
3167 } |
5c885c13bfa3
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diff
changeset
|
3168 |
5c885c13bfa3
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diff
changeset
|
3169 void |
16158
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diff
changeset
|
3170 octave_lexer::display_token (int tok) |
16119
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changeset
|
3171 { |
b31eb56f4d84
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changeset
|
3172 switch (tok) |
b31eb56f4d84
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changeset
|
3173 { |
b31eb56f4d84
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diff
changeset
|
3174 case '=': std::cerr << "'='\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
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diff
changeset
|
3175 case ':': std::cerr << "':'\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
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changeset
|
3176 case '-': std::cerr << "'-'\n"; break; |
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changeset
|
3177 case '+': std::cerr << "'+'\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
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changeset
|
3178 case '*': std::cerr << "'*'\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
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diff
changeset
|
3179 case '/': std::cerr << "'/'\n"; break; |
b31eb56f4d84
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changeset
|
3180 case ADD_EQ: std::cerr << "ADD_EQ\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
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diff
changeset
|
3181 case SUB_EQ: std::cerr << "SUB_EQ\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
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diff
changeset
|
3182 case MUL_EQ: std::cerr << "MUL_EQ\n"; break; |
b31eb56f4d84
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changeset
|
3183 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
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|
3184 case LEFTDIV_EQ: std::cerr << "LEFTDIV_EQ\n"; break; |
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maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
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|
3185 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
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|
3186 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
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|
3187 case EDIV_EQ: std::cerr << "EDIV_EQ\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
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|
3188 case ELEFTDIV_EQ: std::cerr << "ELEFTDIV_EQ\n"; break; |
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maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
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|
3189 case EPOW_EQ: std::cerr << "EPOW_EQ\n"; break; |
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maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3190 case AND_EQ: std::cerr << "AND_EQ\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
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|
3191 case OR_EQ: std::cerr << "OR_EQ\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
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|
3192 case LSHIFT_EQ: std::cerr << "LSHIFT_EQ\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
changeset
|
3193 case RSHIFT_EQ: std::cerr << "RSHIFT_EQ\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
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|
3194 case LSHIFT: std::cerr << "LSHIFT\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
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|
3195 case RSHIFT: std::cerr << "RSHIFT\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
changeset
|
3196 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>
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diff
changeset
|
3197 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>
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diff
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|
3198 case EXPR_AND: std::cerr << "EXPR_AND\n"; break; |
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maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
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|
3199 case EXPR_OR: std::cerr << "EXPR_OR\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
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|
3200 case EXPR_NOT: std::cerr << "EXPR_NOT\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
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|
3201 case EXPR_LT: std::cerr << "EXPR_LT\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
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|
3202 case EXPR_LE: std::cerr << "EXPR_LE\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
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diff
changeset
|
3203 case EXPR_EQ: std::cerr << "EXPR_EQ\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
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|
3204 case EXPR_NE: std::cerr << "EXPR_NE\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
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|
3205 case EXPR_GE: std::cerr << "EXPR_GE\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
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|
3206 case EXPR_GT: std::cerr << "EXPR_GT\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3207 case LEFTDIV: std::cerr << "LEFTDIV\n"; break; |
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maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3208 case EMUL: std::cerr << "EMUL\n"; break; |
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maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3209 case EDIV: std::cerr << "EDIV\n"; break; |
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maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3210 case ELEFTDIV: std::cerr << "ELEFTDIV\n"; break; |
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maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3211 case EPLUS: std::cerr << "EPLUS\n"; break; |
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maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3212 case EMINUS: std::cerr << "EMINUS\n"; break; |
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maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3213 case QUOTE: std::cerr << "QUOTE\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3214 case TRANSPOSE: std::cerr << "TRANSPOSE\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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changeset
|
3215 case PLUS_PLUS: std::cerr << "PLUS_PLUS\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3216 case MINUS_MINUS: std::cerr << "MINUS_MINUS\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3217 case POW: std::cerr << "POW\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3218 case EPOW: std::cerr << "EPOW\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
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|
3219 |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3220 case NUM: |
b31eb56f4d84
maint: reorder class definitions in lex.ll
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changeset
|
3221 case IMAG_NUM: |
16126
5c885c13bfa3
localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
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16125
diff
changeset
|
3222 { |
16148
10abbc493f50
delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3223 token *tok_val = current_token (); |
16126
5c885c13bfa3
localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3224 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>
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diff
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|
3225 << " [" << tok_val->number () << "]\n"; |
5c885c13bfa3
localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
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diff
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|
3226 } |
16119
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maint: reorder class definitions in lex.ll
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changeset
|
3227 break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
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changeset
|
3228 |
b31eb56f4d84
maint: reorder class definitions in lex.ll
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changeset
|
3229 case STRUCT_ELT: |
16126
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localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
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diff
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|
3230 { |
16148
10abbc493f50
delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
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|
3231 token *tok_val = current_token (); |
16126
5c885c13bfa3
localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
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|
3232 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>
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diff
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|
3233 } |
5c885c13bfa3
localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3234 break; |
16119
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maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3235 |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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changeset
|
3236 case NAME: |
b31eb56f4d84
maint: reorder class definitions in lex.ll
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|
3237 { |
16148
10abbc493f50
delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3238 token *tok_val = current_token (); |
16126
5c885c13bfa3
localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3239 symbol_table::symbol_record *sr = tok_val->sym_rec (); |
16119
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3240 std::cerr << "NAME"; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
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|
3241 if (sr) |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3242 std::cerr << " [" << sr->name () << "]"; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
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|
3243 std::cerr << "\n"; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3244 } |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3245 break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3246 |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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changeset
|
3247 case END: std::cerr << "END\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3248 |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3249 case DQ_STRING: |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3250 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
|
3251 { |
16148
10abbc493f50
delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents:
16146
diff
changeset
|
3252 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
|
3253 |
5c885c13bfa3
localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents:
16125
diff
changeset
|
3254 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>
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16125
diff
changeset
|
3255 << " [" << 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
|
3256 } |
16119
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3257 break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3258 |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
changeset
|
3259 case FOR: std::cerr << "FOR\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
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|
3260 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
|
3261 case DO: std::cerr << "DO\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3262 case UNTIL: std::cerr << "UNTIL\n"; break; |
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maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3263 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
|
3264 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
|
3265 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
|
3266 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
|
3267 case CASE: std::cerr << "CASE\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
changeset
|
3268 case OTHERWISE: std::cerr << "OTHERWISE\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
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|
3269 case BREAK: std::cerr << "BREAK\n"; break; |
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maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3270 case CONTINUE: std::cerr << "CONTINUE\n"; break; |
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maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3271 case FUNC_RET: std::cerr << "FUNC_RET\n"; break; |
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maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
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|
3272 case UNWIND: std::cerr << "UNWIND\n"; break; |
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maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
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changeset
|
3273 case CLEANUP: std::cerr << "CLEANUP\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
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|
3274 case TRY: std::cerr << "TRY\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
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|
3275 case CATCH: std::cerr << "CATCH\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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changeset
|
3276 case GLOBAL: std::cerr << "GLOBAL\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3277 case PERSISTENT: std::cerr << "PERSISTENT\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3278 case FCN_HANDLE: std::cerr << "FCN_HANDLE\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
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|
3279 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>
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16118
diff
changeset
|
3280 case LEXICAL_ERROR: std::cerr << "LEXICAL_ERROR\n\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
changeset
|
3281 case FCN: std::cerr << "FCN\n"; break; |
16257
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
3282 case CHOOSE_ASSIGNMENT: std::cerr << "CHOOSE_ASSIGNMENT\n"; break; |
16203
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
3283 case INPUT_FILE: std::cerr << "INPUT_FILE\n"; break; |
16119
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maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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|
3284 case SUPERCLASSREF: std::cerr << "SUPERCLASSREF\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3285 case METAQUERY: std::cerr << "METAQUERY\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3286 case GET: std::cerr << "GET\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
changeset
|
3287 case SET: std::cerr << "SET\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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changeset
|
3288 case PROPERTIES: std::cerr << "PROPERTIES\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
changeset
|
3289 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
|
3290 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
|
3291 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
|
3292 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
|
3293 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
|
3294 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
|
3295 default: |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3296 { |
16166
cb80b1d062b1
don't attempt to print unprintable tokens
John W. Eaton <jwe@octave.org>
parents:
16164
diff
changeset
|
3297 if (tok < 256 && tok > 31) |
16119
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3298 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
|
3299 else |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3300 std::cerr << "UNKNOWN(" << tok << ")\n"; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3301 } |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3302 break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3303 } |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3304 } |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3305 |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3306 void |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
3307 octave_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
|
3308 { |
053b0364b507
localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16128
diff
changeset
|
3309 error (msg); |
053b0364b507
localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16128
diff
changeset
|
3310 |
053b0364b507
localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16128
diff
changeset
|
3311 OCTAVE_QUIT; |
053b0364b507
localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16128
diff
changeset
|
3312 |
16149
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
3313 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
|
3314 } |
053b0364b507
localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16128
diff
changeset
|
3315 |
053b0364b507
localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16128
diff
changeset
|
3316 void |
16229
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3317 octave_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
|
3318 { |
16229
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3319 if (lexer_debug_flag) |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3320 { |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3321 std::cerr << std::endl; |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3322 |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3323 display_start_state (); |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3324 |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3325 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
|
3326 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
|
3327 } |
16119
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3328 } |
16224
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3329 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3330 void |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3331 octave_lexer::push_start_state (int state) |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3332 { |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3333 OCTAVE_YYG; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3334 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3335 start_state_stack.push (state); |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3336 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3337 BEGIN (start_state ()); |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3338 } |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3339 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3340 void |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3341 octave_lexer::pop_start_state (void) |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3342 { |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3343 OCTAVE_YYG; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3344 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3345 start_state_stack.pop (); |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3346 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3347 BEGIN (start_state ()); |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3348 } |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3349 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3350 void |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3351 octave_lexer::clear_start_state (void) |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3352 { |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3353 while (! start_state_stack.empty ()) |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3354 start_state_stack.pop (); |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3355 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3356 push_start_state (INITIAL); |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3357 } |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3358 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3359 void |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3360 octave_lexer::display_start_state (void) const |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3361 { |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3362 std::cerr << "S: "; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3363 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3364 switch (start_state ()) |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3365 { |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3366 case INITIAL: |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3367 std::cerr << "INITIAL" << std::endl; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3368 break; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3369 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3370 case COMMAND_START: |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3371 std::cerr << "COMMAND_START" << std::endl; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3372 break; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3373 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3374 case MATRIX_START: |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3375 std::cerr << "MATRIX_START" << std::endl; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3376 break; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3377 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3378 case INPUT_FILE_START: |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3379 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
|
3380 break; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3381 |
16228
e19b1632d7c1
revamp most comment handling
John W. Eaton <jwe@octave.org>
parents:
16224
diff
changeset
|
3382 case BLOCK_COMMENT_START: |
e19b1632d7c1
revamp most comment handling
John W. Eaton <jwe@octave.org>
parents:
16224
diff
changeset
|
3383 std::cerr << "BLOCK_COMMENT_START" << std::endl; |
e19b1632d7c1
revamp most comment handling
John W. Eaton <jwe@octave.org>
parents:
16224
diff
changeset
|
3384 break; |
e19b1632d7c1
revamp most comment handling
John W. Eaton <jwe@octave.org>
parents:
16224
diff
changeset
|
3385 |
e19b1632d7c1
revamp most comment handling
John W. Eaton <jwe@octave.org>
parents:
16224
diff
changeset
|
3386 case LINE_COMMENT_START: |
e19b1632d7c1
revamp most comment handling
John W. Eaton <jwe@octave.org>
parents:
16224
diff
changeset
|
3387 std::cerr << "LINE_COMMENT_START" << std::endl; |
e19b1632d7c1
revamp most comment handling
John W. Eaton <jwe@octave.org>
parents:
16224
diff
changeset
|
3388 break; |
e19b1632d7c1
revamp most comment handling
John W. Eaton <jwe@octave.org>
parents:
16224
diff
changeset
|
3389 |
16257
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
3390 case KLUGE: |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
3391 std::cerr << "KLUGE" << std::endl; |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
3392 break; |
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
3393 |
16224
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3394 default: |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3395 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
|
3396 break; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3397 } |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3398 } |
16229
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3399 |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3400 int |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3401 octave_lexer::handle_op (const char *pattern, int tok, bool convert, |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3402 bool bos, bool qit) |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3403 { |
16263
9acb86e6ac90
4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16261
diff
changeset
|
3404 lexer_debug (pattern); |
9acb86e6ac90
4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16261
diff
changeset
|
3405 |
16229
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3406 return handle_op_internal (pattern, tok, convert, bos, qit, true); |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3407 } |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3408 |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3409 int |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3410 octave_lexer::handle_incompatible_op (const char *pattern, int tok, |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3411 bool convert, bool bos, bool qit) |
7b7b1e4968e8
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|
3412 { |
16263
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3413 lexer_debug (pattern); |
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3414 |
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|
3415 return handle_op_internal (pattern, tok, convert, bos, qit, false); |
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3416 } |
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|
3417 |
16263
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3418 bool |
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3419 octave_lexer::maybe_unput_comma_before_unary_op (int tok) |
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3420 { |
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3421 int prev_tok = previous_token_value (); |
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3422 |
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changeset
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3423 bool unput_comma = false; |
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changeset
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3424 |
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parents:
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changeset
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3425 if (whitespace_is_significant () && space_follows_previous_token ()) |
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3426 { |
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parents:
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changeset
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3427 int c = text_yyinput (); |
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parents:
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diff
changeset
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3428 xunput (c); |
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changeset
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3429 |
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3430 bool space_after = (c == ' ' || c == '\t'); |
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changeset
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3431 |
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changeset
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3432 if (! (prev_tok == ';' || prev_tok == ',' |
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parents:
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3433 || prev_tok == '[' || prev_tok == '{' |
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3434 || previous_token_is_binop () |
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3435 || ((tok == '+' || tok == '-') && space_after))) |
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parents:
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3436 unput_comma = true; |
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3437 } |
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changeset
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3438 |
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changeset
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3439 return unput_comma; |
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3440 } |
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changeset
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3441 |
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3442 int |
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3443 octave_lexer::handle_unary_op (const char *pattern, int tok, bool convert, |
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3444 bool bos, bool qit) |
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3445 { |
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changeset
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3446 lexer_debug (pattern); |
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3447 |
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3448 return maybe_unput_comma_before_unary_op (tok) |
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3449 ? -1 : handle_op_internal (pattern, tok, convert, bos, qit, true); |
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3450 } |
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3451 |
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changeset
|
3452 int |
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3453 octave_lexer::handle_incompatible_unary_op (const char *pattern, int tok, |
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3454 bool convert, bool bos, bool qit) |
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changeset
|
3455 { |
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changeset
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3456 lexer_debug (pattern); |
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3457 |
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3458 return maybe_unput_comma_before_unary_op (tok) |
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3459 ? -1 : handle_op_internal (pattern, tok, convert, bos, qit, false); |
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3460 } |
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3461 |
16229
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3462 int |
16257
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3463 octave_lexer::handle_assign_op (const char *pattern, int tok) |
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3464 { |
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changeset
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3465 lexer_debug (pattern); |
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3466 |
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3467 return (previous_token_value_is (']') && looking_at_matrix_or_assign_lhs) |
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3468 ? -1 : handle_op_internal (pattern, tok, false, false, false, true); |
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3469 } |
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3470 |
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|
3471 int |
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|
3472 octave_lexer::handle_incompatible_assign_op (const char *pattern, int tok) |
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|
3473 { |
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changeset
|
3474 lexer_debug (pattern); |
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|
3475 |
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changeset
|
3476 return (previous_token_value_is (']') && looking_at_matrix_or_assign_lhs) |
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|
3477 ? -1 : handle_op_internal (pattern, tok, false, false, false, false); |
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|
3478 } |
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changeset
|
3479 |
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parents:
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changeset
|
3480 int |
16229
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diff
changeset
|
3481 octave_lexer::handle_op_internal (const char *pattern, int tok, bool convert, |
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|
3482 bool bos, bool qit, bool compat) |
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parents:
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changeset
|
3483 { |
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parents:
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|
3484 if (! compat) |
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parents:
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changeset
|
3485 gripe_matlab_incompatible_operator (flex_yytext ()); |
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use functions instead of token return macros in lexer
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parents:
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diff
changeset
|
3486 |
16255
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parents:
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diff
changeset
|
3487 push_token (new token (tok, input_line_number, current_input_column)); |
16229
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changeset
|
3488 |
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parents:
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changeset
|
3489 current_input_column += flex_yyleng (); |
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diff
changeset
|
3490 looking_for_object_index = false; |
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use functions instead of token return macros in lexer
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parents:
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diff
changeset
|
3491 at_beginning_of_statement = bos; |
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parents:
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changeset
|
3492 |
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parents:
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diff
changeset
|
3493 return count_token (tok); |
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parents:
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diff
changeset
|
3494 } |
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parents:
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diff
changeset
|
3495 |
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parents:
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diff
changeset
|
3496 int |
16231
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put all tokens in the token cache
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parents:
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diff
changeset
|
3497 octave_lexer::handle_token (const std::string& name, int tok) |
16229
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|
3498 { |
16255
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diff
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|
3499 token *tok_val = new token (tok, name, input_line_number, |
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diff
changeset
|
3500 current_input_column); |
16231
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changeset
|
3501 |
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parents:
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changeset
|
3502 return handle_token (tok, tok_val); |
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|
3503 } |
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|
3504 |
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|
3505 int |
16231
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parents:
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|
3506 octave_lexer::handle_token (int tok, token *tok_val) |
16229
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|
3507 { |
16231
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changeset
|
3508 if (! tok_val) |
16255
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|
3509 tok_val = new token (tok, input_line_number, current_input_column); |
16231
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|
3510 |
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|
3511 push_token (tok_val); |
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|
3512 |
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|
3513 current_input_column += flex_yyleng (); |
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|
3514 |
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|
3515 return count_token_internal (tok); |
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|
3516 } |
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changeset
|
3517 |
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|
3518 int |
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|
3519 octave_lexer::count_token (int tok) |
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3520 { |
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|
3521 token *tok_val = new token (tok, input_line_number, current_input_column); |
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|
3522 |
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|
3523 push_token (tok_val); |
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|
3524 |
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|
3525 return count_token_internal (tok); |
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|
3526 } |
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|
3527 |
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|
3528 int |
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changeset
|
3529 octave_lexer::count_token_internal (int tok) |
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3530 { |
16229
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use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
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|
3531 if (tok != '\n') |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3532 { |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
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|
3533 Vtoken_count++; |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
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changeset
|
3534 token_count++; |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3535 } |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3536 |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3537 return show_token (tok); |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3538 } |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3539 |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
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|
3540 int |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
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|
3541 octave_lexer::show_token (int tok) |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
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|
3542 { |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
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|
3543 if (Vdisplay_tokens) |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
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|
3544 display_token (tok); |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
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|
3545 |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
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|
3546 if (lexer_debug_flag) |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
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|
3547 { |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
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|
3548 std::cerr << "R: "; |
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use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
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|
3549 display_token (tok); |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
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|
3550 std::cerr << std::endl; |
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use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
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|
3551 } |
7b7b1e4968e8
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John W. Eaton <jwe@octave.org>
parents:
16228
diff
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|
3552 |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
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|
3553 return tok; |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
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|
3554 } |