Mercurial > octave-nkf
annotate src/lex.ll @ 14138:72c96de7a403 stable
maint: update copyright notices for 2012
author | John W. Eaton <jwe@octave.org> |
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date | Mon, 02 Jan 2012 14:25:41 -0500 |
parents | f90c3facfac3 |
children | f4b5a2f899d3 |
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 | |
4753 | 23 %option prefix = "octave_" |
24 | |
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25 %top { |
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26 #ifdef HAVE_CONFIG_H |
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27 #include <config.h> |
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28 #endif |
10411 | 29 |
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30 } |
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31 |
4208 | 32 %s COMMAND_START |
33 %s MATRIX_START | |
4240 | 34 |
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35 %x SCRIPT_FILE_BEGIN |
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36 %x FUNCTION_FILE_BEGIN |
1 | 37 |
38 %{ | |
240 | 39 |
1341 | 40 #include <cctype> |
41 #include <cstring> | |
42 | |
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43 #include <iostream> |
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44 #include <set> |
5765 | 45 #include <sstream> |
1823 | 46 #include <string> |
4214 | 47 #include <stack> |
1823 | 48 |
4093 | 49 #include <sys/types.h> |
50 #include <unistd.h> | |
51 | |
2926 | 52 #include "cmd-edit.h" |
4153 | 53 #include "quit.h" |
4910 | 54 #include "lo-mappers.h" |
2926 | 55 |
1497 | 56 // These would be alphabetical, but y.tab.h must be included before |
57 // oct-gperf.h and y.tab.h must be included after token.h and the tree | |
58 // class declarations. We can't include y.tab.h in oct-gperf.h | |
59 // because it may not be protected to allow it to be included multiple | |
60 // times. | |
61 | |
4264 | 62 #include "Cell.h" |
3665 | 63 #include "comment-list.h" |
2181 | 64 #include "defun.h" |
1355 | 65 #include "error.h" |
4910 | 66 #include "gripes.h" |
1351 | 67 #include "input.h" |
1355 | 68 #include "lex.h" |
2891 | 69 #include "ov.h" |
1355 | 70 #include "parse.h" |
2987 | 71 #include "pt-all.h" |
2891 | 72 #include "symtab.h" |
73 #include "token.h" | |
74 #include "toplev.h" | |
1355 | 75 #include "utils.h" |
76 #include "variables.h" | |
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77 #include <oct-parse.h> |
2492 | 78 #include <oct-gperf.h> |
1 | 79 |
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80 #if defined (GNULIB_NAMESPACE) |
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81 // Calls to the following functions appear in the generated output from |
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82 // flex without the namespace tag. Redefine them so we will use them |
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83 // via the gnulib namespace. |
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84 #define fprintf GNULIB_NAMESPACE::fprintf |
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85 #define fwrite GNULIB_NAMESPACE::fwrite |
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86 #define malloc GNULIB_NAMESPACE::malloc |
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87 #define realloc GNULIB_NAMESPACE::realloc |
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88 #endif |
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89 |
2716 | 90 #if ! (defined (FLEX_SCANNER) \ |
91 && defined (YY_FLEX_MAJOR_VERSION) && YY_FLEX_MAJOR_VERSION >= 2 \ | |
92 && defined (YY_FLEX_MINOR_VERSION) && YY_FLEX_MINOR_VERSION >= 5) | |
93 #error lex.l requires flex version 2.5.4 or later | |
94 #endif | |
95 | |
4753 | 96 #define yylval octave_lval |
97 | |
98 // Arrange to get input via readline. | |
99 | |
100 #ifdef YY_INPUT | |
101 #undef YY_INPUT | |
102 #endif | |
103 #define YY_INPUT(buf, result, max_size) \ | |
104 if ((result = octave_read (buf, max_size)) < 0) \ | |
105 YY_FATAL_ERROR ("octave_read () in flex scanner failed"); | |
106 | |
107 // Try to avoid crashing out completely on fatal scanner errors. | |
108 // The call to yy_fatal_error should never happen, but it avoids a | |
109 // `static function defined but not used' warning from gcc. | |
110 | |
111 #ifdef YY_FATAL_ERROR | |
112 #undef YY_FATAL_ERROR | |
113 #endif | |
114 #define YY_FATAL_ERROR(msg) \ | |
115 do \ | |
116 { \ | |
117 error (msg); \ | |
118 OCTAVE_QUIT; \ | |
119 yy_fatal_error (msg); \ | |
120 } \ | |
121 while (0) | |
122 | |
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123 #define DISPLAY_TOK_AND_RETURN(tok) \ |
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124 do \ |
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125 { \ |
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126 int tok_val = tok; \ |
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127 if (Vdisplay_tokens) \ |
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128 display_token (tok_val); \ |
8535 | 129 if (lexer_debug_flag) \ |
130 { \ | |
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131 std::cerr << "R: "; \ |
8535 | 132 display_token (tok_val); \ |
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133 std::cerr << std::endl; \ |
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134 } \ |
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135 return tok_val; \ |
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136 } \ |
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137 while (0) |
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138 |
4910 | 139 #define COUNT_TOK_AND_RETURN(tok) \ |
140 do \ | |
141 { \ | |
142 Vtoken_count++; \ | |
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143 DISPLAY_TOK_AND_RETURN (tok); \ |
4910 | 144 } \ |
145 while (0) | |
146 | |
4753 | 147 #define TOK_RETURN(tok) \ |
148 do \ | |
149 { \ | |
150 current_input_column += yyleng; \ | |
151 lexer_flags.quote_is_transpose = false; \ | |
152 lexer_flags.convert_spaces_to_comma = true; \ | |
4910 | 153 COUNT_TOK_AND_RETURN (tok); \ |
4753 | 154 } \ |
155 while (0) | |
156 | |
157 #define TOK_PUSH_AND_RETURN(name, tok) \ | |
158 do \ | |
159 { \ | |
160 yylval.tok_val = new token (name, input_line_number, \ | |
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161 current_input_column); \ |
4753 | 162 token_stack.push (yylval.tok_val); \ |
163 TOK_RETURN (tok); \ | |
164 } \ | |
165 while (0) | |
166 | |
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167 #define BIN_OP_RETURN_INTERNAL(tok, convert, bos, qit) \ |
4753 | 168 do \ |
169 { \ | |
170 yylval.tok_val = new token (input_line_number, current_input_column); \ | |
171 token_stack.push (yylval.tok_val); \ | |
172 current_input_column += yyleng; \ | |
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173 lexer_flags.quote_is_transpose = qit; \ |
4753 | 174 lexer_flags.convert_spaces_to_comma = convert; \ |
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175 lexer_flags.looking_for_object_index = false; \ |
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176 lexer_flags.at_beginning_of_statement = bos; \ |
4910 | 177 COUNT_TOK_AND_RETURN (tok); \ |
4753 | 178 } \ |
179 while (0) | |
180 | |
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181 #define XBIN_OP_RETURN_INTERNAL(tok, convert, bos, qit) \ |
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182 do \ |
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183 { \ |
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184 gripe_matlab_incompatible_operator (yytext); \ |
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185 BIN_OP_RETURN_INTERNAL (tok, convert, bos, qit); \ |
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186 } \ |
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187 while (0) |
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188 |
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189 #define BIN_OP_RETURN(tok, convert, bos) \ |
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190 do \ |
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191 { \ |
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192 BIN_OP_RETURN_INTERNAL (tok, convert, bos, false); \ |
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193 } \ |
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194 while (0) |
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195 |
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196 #define XBIN_OP_RETURN(tok, convert, bos) \ |
4753 | 197 do \ |
198 { \ | |
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199 gripe_matlab_incompatible_operator (yytext); \ |
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200 BIN_OP_RETURN (tok, convert, bos); \ |
4753 | 201 } \ |
202 while (0) | |
203 | |
8535 | 204 #define LEXER_DEBUG(pattern) \ |
205 do \ | |
206 { \ | |
207 if (lexer_debug_flag) \ | |
208 lexer_debug (pattern, yytext); \ | |
209 } \ | |
210 while (0) | |
211 | |
3883 | 212 // TRUE means that we have encountered EOF on the input stream. |
213 bool parser_end_of_input = false; | |
214 | |
1826 | 215 // Flags that need to be shared between the lexer and parser. |
216 lexical_feedback lexer_flags; | |
217 | |
1351 | 218 // Stack to hold tokens so that we can delete them when the parser is |
219 // reset and avoid growing forever just because we are stashing some | |
220 // information. This has to appear before lex.h is included, because | |
221 // one of the macros defined there uses token_stack. | |
2614 | 222 // |
5775 | 223 // FIXME -- this should really be static, but that causes |
2614 | 224 // problems on some systems. |
4214 | 225 std::stack <token*> token_stack; |
1351 | 226 |
1826 | 227 // Did eat_whitespace() eat a space or tab, or a newline, or both? |
1 | 228 |
1826 | 229 typedef int yum_yum; |
1 | 230 |
1826 | 231 const yum_yum ATE_NOTHING = 0; |
232 const yum_yum ATE_SPACE_OR_TAB = 1; | |
233 const yum_yum ATE_NEWLINE = 2; | |
1088 | 234 |
3351 | 235 // Is the closest nesting level a square bracket, squiggly brace or a paren? |
1826 | 236 |
4214 | 237 class bracket_brace_paren_nesting_level |
1826 | 238 { |
239 public: | |
240 | |
4214 | 241 bracket_brace_paren_nesting_level (void) : context () { } |
1826 | 242 |
3351 | 243 ~bracket_brace_paren_nesting_level (void) { } |
244 | |
4214 | 245 void bracket (void) { context.push (BRACKET); } |
246 bool is_bracket (void) | |
247 { return ! context.empty () && context.top () == BRACKET; } | |
248 | |
249 void brace (void) { context.push (BRACE); } | |
250 bool is_brace (void) | |
251 { return ! context.empty () && context.top () == BRACE; } | |
252 | |
253 void paren (void) { context.push (PAREN); } | |
254 bool is_paren (void) | |
255 { return ! context.empty () && context.top () == PAREN; } | |
256 | |
4608 | 257 bool is_bracket_or_brace (void) |
258 { return (! context.empty () | |
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259 && (context.top () == BRACKET || context.top () == BRACE)); } |
4608 | 260 |
4214 | 261 bool none (void) { return context.empty (); } |
262 | |
263 void remove (void) { if (! context.empty ()) context.pop (); } | |
264 | |
265 void clear (void) { while (! context.empty ()) context.pop (); } | |
1826 | 266 |
267 private: | |
268 | |
4214 | 269 std::stack<int> context; |
270 | |
5225 | 271 static const int BRACKET; |
272 static const int BRACE; | |
273 static const int PAREN; | |
1826 | 274 |
3351 | 275 bracket_brace_paren_nesting_level (const bracket_brace_paren_nesting_level&); |
1826 | 276 |
3351 | 277 bracket_brace_paren_nesting_level& |
278 operator = (const bracket_brace_paren_nesting_level&); | |
1826 | 279 }; |
280 | |
5225 | 281 const int bracket_brace_paren_nesting_level::BRACKET = 1; |
282 const int bracket_brace_paren_nesting_level::BRACE = 2; | |
283 const int bracket_brace_paren_nesting_level::PAREN = 3; | |
284 | |
3351 | 285 static bracket_brace_paren_nesting_level nesting_level; |
1 | 286 |
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287 static bool Vdisplay_tokens = false; |
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288 |
4910 | 289 static unsigned int Vtoken_count = 0; |
290 | |
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291 // The start state that was in effect when the beginning of a block |
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292 // comment was noticed. |
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293 static int block_comment_nesting_level = 0; |
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294 |
8535 | 295 // Internal variable for lexer debugging state. |
296 static bool lexer_debug_flag = false; | |
297 | |
146 | 298 // Forward declarations for functions defined at the bottom of this |
299 // file. | |
300 | |
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301 static int text_yyinput (void); |
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302 static void xunput (char c, char *buf); |
1 | 303 static void fixup_column_count (char *s); |
146 | 304 static void do_comma_insert_check (void); |
4867 | 305 static int is_keyword_token (const std::string& s); |
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306 static int process_comment (bool start_in_block, bool& eof); |
2857 | 307 static bool match_any (char c, const char *s); |
3263 | 308 static bool next_token_is_sep_op (void); |
3246 | 309 static bool next_token_is_bin_op (bool spc_prev); |
310 static bool next_token_is_postfix_unary_op (bool spc_prev); | |
3523 | 311 static std::string strip_trailing_whitespace (char *s); |
3246 | 312 static void handle_number (void); |
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313 static int handle_string (char delim); |
4612 | 314 static int handle_close_bracket (bool spc_gobbled, int bracket_type); |
9476 | 315 static int handle_superclass_identifier (void); |
316 static int handle_meta_identifier (void); | |
3974 | 317 static int handle_identifier (void); |
3096 | 318 static bool have_continuation (bool trailing_comments_ok = true); |
319 static bool have_ellipsis_continuation (bool trailing_comments_ok = true); | |
3665 | 320 static void scan_for_comments (const char *); |
1826 | 321 static yum_yum eat_whitespace (void); |
322 static yum_yum eat_continuation (void); | |
3388 | 323 static void maybe_warn_separator_insert (char sep); |
3400 | 324 static void gripe_single_quote_string (void); |
4037 | 325 static void gripe_matlab_incompatible (const std::string& msg); |
326 static void maybe_gripe_matlab_incompatible_comment (char c); | |
327 static void gripe_matlab_incompatible_continuation (void); | |
328 static void gripe_matlab_incompatible_operator (const std::string& op); | |
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329 static void display_token (int tok); |
8535 | 330 static void lexer_debug (const char *pattern, const char *text); |
1 | 331 |
332 %} | |
333 | |
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334 D [0-9] |
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335 S [ \t] |
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336 NL ((\n)|(\r)|(\r\n)) |
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337 SNL ({S}|{NL}) |
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338 EL (\.\.\.) |
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339 BS (\\) |
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340 CONT ({EL}|{BS}) |
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341 Im [iIjJ] |
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342 CCHAR [#%] |
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343 COMMENT ({CCHAR}.*{NL}) |
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344 SNLCMT ({SNL}|{COMMENT}) |
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345 NOT ((\~)|(\!)) |
4037 | 346 POW ((\*\*)|(\^)) |
347 EPOW (\.{POW}) | |
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348 IDENT ([_$a-zA-Z][_$a-zA-Z0-9]*) |
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349 EXPON ([DdEe][+-]?{D}+) |
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350 NUMBER (({D}+\.?{D}*{EXPON}?)|(\.{D}+{EXPON}?)|(0[xX][0-9a-fA-F]+)) |
1 | 351 %% |
352 | |
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353 %{ |
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354 // Make script and function files start with a bogus token. This makes |
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355 // the parser go down a special path. |
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356 %} |
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357 |
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358 <SCRIPT_FILE_BEGIN>. { |
8535 | 359 LEXER_DEBUG ("<SCRIPT_FILE_BEGIN>."); |
360 | |
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361 BEGIN (INITIAL); |
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362 xunput (yytext[0], yytext); |
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363 COUNT_TOK_AND_RETURN (SCRIPT_FILE); |
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364 } |
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365 |
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366 <FUNCTION_FILE_BEGIN>. { |
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367 LEXER_DEBUG ("<FUNCTION_FILE_BEGIN>."); |
8535 | 368 |
4323 | 369 BEGIN (INITIAL); |
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370 xunput (yytext[0], yytext); |
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371 COUNT_TOK_AND_RETURN (FUNCTION_FILE); |
4238 | 372 } |
373 | |
968 | 374 %{ |
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375 // Help and other command-style functions. |
968 | 376 %} |
377 | |
4208 | 378 <COMMAND_START>{NL} { |
8535 | 379 LEXER_DEBUG ("<COMMAND_START>{NL}"); |
380 | |
4323 | 381 BEGIN (INITIAL); |
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382 input_line_number++; |
967 | 383 current_input_column = 1; |
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384 |
2857 | 385 lexer_flags.quote_is_transpose = false; |
386 lexer_flags.convert_spaces_to_comma = true; | |
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387 lexer_flags.looking_for_object_index = false; |
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388 lexer_flags.at_beginning_of_statement = true; |
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389 |
4910 | 390 COUNT_TOK_AND_RETURN ('\n'); |
967 | 391 } |
1 | 392 |
4208 | 393 <COMMAND_START>[\;\,] { |
8535 | 394 LEXER_DEBUG ("<COMMAND_START>[\\;\\,]"); |
395 | |
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396 lexer_flags.looking_for_object_index = false; |
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397 lexer_flags.at_beginning_of_statement = true; |
5102 | 398 |
399 BEGIN (INITIAL); | |
400 | |
401 if (strcmp (yytext, ",") == 0) | |
402 TOK_RETURN (','); | |
967 | 403 else |
5102 | 404 TOK_RETURN (';'); |
967 | 405 } |
1 | 406 |
4208 | 407 <COMMAND_START>[\"\'] { |
8535 | 408 LEXER_DEBUG ("<COMMAND_START>[\\\"\\']"); |
409 | |
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410 lexer_flags.at_beginning_of_statement = false; |
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411 |
975 | 412 current_input_column++; |
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413 int tok = handle_string (yytext[0]); |
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414 |
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415 COUNT_TOK_AND_RETURN (tok); |
975 | 416 } |
417 | |
4923 | 418 <COMMAND_START>[^#% \t\r\n\;\,\"\'][^ \t\r\n\;\,]*{S}* { |
8535 | 419 LEXER_DEBUG ("<COMMAND_START>[^#% \\t\\r\\n\\;\\,\\\"\\'][^ \\t\\r\\n\\;\\,]*{S}*"); |
420 | |
3523 | 421 std::string tok = strip_trailing_whitespace (yytext); |
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422 |
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423 lexer_flags.looking_for_object_index = false; |
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424 lexer_flags.at_beginning_of_statement = false; |
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425 |
5279 | 426 TOK_PUSH_AND_RETURN (tok, SQ_STRING); |
967 | 427 } |
1 | 428 |
968 | 429 %{ |
1 | 430 // For this and the next two rules, we're looking at ']', and we |
971 | 431 // need to know if the next token is `=' or `=='. |
1 | 432 // |
433 // It would have been so much easier if the delimiters were simply | |
434 // different for the expression on the left hand side of the equals | |
435 // operator. | |
971 | 436 // |
437 // It's also a pain in the ass to decide whether to insert a comma | |
438 // after seeing a ']' character... | |
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439 |
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440 // FIXME -- we need to handle block comments here. |
968 | 441 %} |
442 | |
4208 | 443 <MATRIX_START>{SNLCMT}*\]{S}* { |
8535 | 444 LEXER_DEBUG ("<MATRIX_START>{SNLCMT}*\\]{S}*"); |
445 | |
3665 | 446 scan_for_comments (yytext); |
1001 | 447 fixup_column_count (yytext); |
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448 |
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449 lexer_flags.looking_at_object_index.pop_front (); |
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450 |
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451 lexer_flags.looking_for_object_index = true; |
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452 lexer_flags.at_beginning_of_statement = false; |
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453 |
1001 | 454 int c = yytext[yyleng-1]; |
455 int cont_is_spc = eat_continuation (); | |
4608 | 456 bool spc_gobbled = (cont_is_spc || c == ' ' || c == '\t'); |
5345 | 457 int tok_to_return = handle_close_bracket (spc_gobbled, ']'); |
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458 |
5345 | 459 if (spc_gobbled) |
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460 xunput (' ', yytext); |
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461 |
5345 | 462 COUNT_TOK_AND_RETURN (tok_to_return); |
4608 | 463 } |
464 | |
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465 %{ |
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466 // FIXME -- we need to handle block comments here. |
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467 %} |
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468 |
4608 | 469 <MATRIX_START>{SNLCMT}*\}{S}* { |
8535 | 470 LEXER_DEBUG ("<MATRIX_START>{SNLCMT}*\\}{S}*"); |
471 | |
4608 | 472 scan_for_comments (yytext); |
473 fixup_column_count (yytext); | |
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474 |
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475 lexer_flags.looking_at_object_index.pop_front (); |
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476 |
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477 lexer_flags.looking_for_object_index = true; |
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478 lexer_flags.at_beginning_of_statement = false; |
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479 |
4608 | 480 int c = yytext[yyleng-1]; |
481 int cont_is_spc = eat_continuation (); | |
482 bool spc_gobbled = (cont_is_spc || c == ' ' || c == '\t'); | |
5345 | 483 int tok_to_return = handle_close_bracket (spc_gobbled, '}'); |
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484 |
5345 | 485 if (spc_gobbled) |
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486 xunput (' ', yytext); |
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487 |
5345 | 488 COUNT_TOK_AND_RETURN (tok_to_return); |
967 | 489 } |
1 | 490 |
968 | 491 %{ |
1088 | 492 // Commas are element separators in matrix constants. If we don't |
493 // check for continuations here we can end up inserting too many | |
494 // commas. | |
968 | 495 %} |
496 | |
4208 | 497 <MATRIX_START>{S}*\,{S}* { |
8535 | 498 LEXER_DEBUG ("<MATRIX_START>{S}*\\,{S}*"); |
499 | |
1088 | 500 current_input_column += yyleng; |
3388 | 501 |
1088 | 502 int tmp = eat_continuation (); |
3388 | 503 |
2857 | 504 lexer_flags.quote_is_transpose = false; |
505 lexer_flags.convert_spaces_to_comma = true; | |
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506 lexer_flags.looking_for_object_index = false; |
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507 lexer_flags.at_beginning_of_statement = false; |
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508 |
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509 if (! lexer_flags.looking_at_object_index.front ()) |
3388 | 510 { |
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511 if ((tmp & ATE_NEWLINE) == ATE_NEWLINE) |
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512 { |
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513 maybe_warn_separator_insert (';'); |
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514 |
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515 xunput (';', yytext); |
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516 } |
3388 | 517 } |
518 | |
4910 | 519 COUNT_TOK_AND_RETURN (','); |
967 | 520 } |
1 | 521 |
968 | 522 %{ |
523 // In some cases, spaces in matrix constants can turn into commas. | |
524 // If commas are required, spaces are not important in matrix | |
1088 | 525 // constants so we just eat them. If we don't check for continuations |
526 // here we can end up inserting too many commas. | |
968 | 527 %} |
430 | 528 |
4208 | 529 <MATRIX_START>{S}+ { |
8535 | 530 LEXER_DEBUG ("<MATRIX_START>{S}+"); |
531 | |
1088 | 532 current_input_column += yyleng; |
3388 | 533 |
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534 lexer_flags.at_beginning_of_statement = false; |
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535 |
3388 | 536 int tmp = eat_continuation (); |
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537 |
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538 if (! lexer_flags.looking_at_object_index.front ()) |
967 | 539 { |
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540 bool bin_op = next_token_is_bin_op (true); |
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541 bool postfix_un_op = next_token_is_postfix_unary_op (true); |
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542 bool sep_op = next_token_is_sep_op (); |
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543 |
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544 if (! (postfix_un_op || bin_op || sep_op) |
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545 && nesting_level.is_bracket_or_brace () |
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546 && lexer_flags.convert_spaces_to_comma) |
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547 { |
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548 if ((tmp & ATE_NEWLINE) == ATE_NEWLINE) |
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549 { |
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550 maybe_warn_separator_insert (';'); |
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551 |
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552 xunput (';', yytext); |
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553 } |
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554 |
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555 lexer_flags.quote_is_transpose = false; |
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556 lexer_flags.convert_spaces_to_comma = true; |
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557 lexer_flags.looking_for_object_index = false; |
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558 |
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559 maybe_warn_separator_insert (','); |
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560 |
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561 COUNT_TOK_AND_RETURN (','); |
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562 } |
967 | 563 } |
564 } | |
430 | 565 |
968 | 566 %{ |
1088 | 567 // Semicolons are handled as row seprators in matrix constants. If we |
568 // don't eat whitespace here we can end up inserting too many | |
569 // semicolons. | |
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570 |
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571 // FIXME -- we need to handle block comments here. |
968 | 572 %} |
573 | |
4208 | 574 <MATRIX_START>{SNLCMT}*;{SNLCMT}* { |
8535 | 575 LEXER_DEBUG ("<MATRIX_START>{SNLCMT}*;{SNLCMT}*"); |
576 | |
3665 | 577 scan_for_comments (yytext); |
967 | 578 fixup_column_count (yytext); |
1001 | 579 eat_whitespace (); |
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580 |
2857 | 581 lexer_flags.quote_is_transpose = false; |
582 lexer_flags.convert_spaces_to_comma = true; | |
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583 lexer_flags.looking_for_object_index = false; |
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584 lexer_flags.at_beginning_of_statement = false; |
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585 |
4910 | 586 COUNT_TOK_AND_RETURN (';'); |
967 | 587 } |
588 | |
968 | 589 %{ |
1088 | 590 // In some cases, new lines can also become row separators. If we |
591 // don't eat whitespace here we can end up inserting too many | |
592 // semicolons. | |
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593 |
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594 // FIXME -- we need to handle block comments here. |
985 | 595 %} |
596 | |
4208 | 597 <MATRIX_START>{S}*{COMMENT}{SNLCMT}* | |
598 <MATRIX_START>{S}*{NL}{SNLCMT}* { | |
8535 | 599 LEXER_DEBUG ("<MATRIX_START>{S}*{COMMENT}{SNLCMT}*|<MATRIX_START>{S}*{NL}{SNLCMT}*"); |
600 | |
3665 | 601 scan_for_comments (yytext); |
1082 | 602 fixup_column_count (yytext); |
1088 | 603 eat_whitespace (); |
3388 | 604 |
4476 | 605 lexer_flags.quote_is_transpose = false; |
606 lexer_flags.convert_spaces_to_comma = true; | |
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607 lexer_flags.at_beginning_of_statement = false; |
4476 | 608 |
609 if (nesting_level.none ()) | |
610 return LEXICAL_ERROR; | |
985 | 611 |
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612 if (! lexer_flags.looking_at_object_index.front () |
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613 && nesting_level.is_bracket_or_brace ()) |
3388 | 614 { |
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615 maybe_warn_separator_insert (';'); |
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616 |
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617 COUNT_TOK_AND_RETURN (';'); |
985 | 618 } |
619 } | |
620 | |
967 | 621 \[{S}* { |
8535 | 622 LEXER_DEBUG ("\\[{S}*"); |
623 | |
3351 | 624 nesting_level.bracket (); |
975 | 625 |
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626 lexer_flags.looking_at_object_index.push_front (false); |
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627 |
1082 | 628 current_input_column += yyleng; |
2857 | 629 lexer_flags.quote_is_transpose = false; |
630 lexer_flags.convert_spaces_to_comma = true; | |
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631 lexer_flags.looking_for_object_index = false; |
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632 lexer_flags.at_beginning_of_statement = false; |
975 | 633 |
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634 if (lexer_flags.defining_func |
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635 && ! lexer_flags.parsed_function_name.top ()) |
5615 | 636 lexer_flags.looking_at_return_list = true; |
637 else | |
638 lexer_flags.looking_at_matrix_or_assign_lhs = true; | |
639 | |
975 | 640 promptflag--; |
641 eat_whitespace (); | |
642 | |
5102 | 643 lexer_flags.bracketflag++; |
644 BEGIN (MATRIX_START); | |
645 COUNT_TOK_AND_RETURN ('['); | |
967 | 646 } |
1 | 647 |
968 | 648 \] { |
8535 | 649 LEXER_DEBUG ("\\]"); |
650 | |
1826 | 651 nesting_level.remove (); |
968 | 652 |
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653 lexer_flags.looking_at_object_index.pop_front (); |
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654 |
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655 lexer_flags.looking_for_object_index = true; |
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656 lexer_flags.at_beginning_of_statement = false; |
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657 |
5102 | 658 TOK_RETURN (']'); |
968 | 659 } |
660 | |
661 %{ | |
662 // Imaginary numbers. | |
663 %} | |
664 | |
665 {NUMBER}{Im} { | |
8535 | 666 LEXER_DEBUG ("{NUMBER}{Im}"); |
667 | |
3246 | 668 handle_number (); |
4910 | 669 COUNT_TOK_AND_RETURN (IMAG_NUM); |
968 | 670 } |
671 | |
672 %{ | |
673 // Real numbers. Don't grab the `.' part of a dot operator as part of | |
674 // the constant. | |
675 %} | |
676 | |
8535 | 677 {D}+/\.[\*/\\^\'] | |
968 | 678 {NUMBER} { |
8535 | 679 LEXER_DEBUG ("{D}+/\\.[\\*/\\^\\']|{NUMBER}"); |
3246 | 680 handle_number (); |
4910 | 681 COUNT_TOK_AND_RETURN (NUM); |
968 | 682 } |
683 | |
684 %{ | |
685 // Eat whitespace. Whitespace inside matrix constants is handled by | |
4208 | 686 // the <MATRIX_START> start state code above. |
968 | 687 %} |
688 | |
967 | 689 {S}* { |
690 current_input_column += yyleng; | |
691 } | |
692 | |
968 | 693 %{ |
694 // Continuation lines. Allow comments after continuations. | |
695 %} | |
696 | |
967 | 697 {CONT}{S}*{NL} | |
698 {CONT}{S}*{COMMENT} { | |
8535 | 699 LEXER_DEBUG ("{CONT}{S}*{NL}|{CONT}{S}*{COMMENT}"); |
700 | |
4037 | 701 if (yytext[0] == '\\') |
702 gripe_matlab_incompatible_continuation (); | |
3665 | 703 scan_for_comments (yytext); |
967 | 704 promptflag--; |
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705 input_line_number++; |
967 | 706 current_input_column = 1; |
707 } | |
1 | 708 |
968 | 709 %{ |
710 // End of file. | |
711 %} | |
712 | |
967 | 713 <<EOF>> { |
8535 | 714 LEXER_DEBUG ("<<EOF>>"); |
715 | |
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716 if (block_comment_nesting_level != 0) |
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717 { |
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718 warning ("block comment open at end of input"); |
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719 |
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720 if ((reading_fcn_file || reading_script_file || reading_classdef_file) |
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721 && ! curr_fcn_file_name.empty ()) |
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722 warning ("near line %d of file `%s.m'", |
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723 input_line_number, curr_fcn_file_name.c_str ()); |
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724 } |
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725 |
967 | 726 TOK_RETURN (END_OF_INPUT); |
727 } | |
1 | 728 |
968 | 729 %{ |
970 | 730 // Identifiers. Truncate the token at the first space or tab but |
731 // don't write directly on yytext. | |
968 | 732 %} |
733 | |
967 | 734 {IDENT}{S}* { |
8535 | 735 LEXER_DEBUG ("{IDENT}{S}*"); |
736 | |
4238 | 737 int id_tok = handle_identifier (); |
738 | |
739 if (id_tok >= 0) | |
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740 COUNT_TOK_AND_RETURN (id_tok); |
967 | 741 } |
1 | 742 |
968 | 743 %{ |
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744 // Superclass method identifiers. |
9476 | 745 %} |
746 | |
747 {IDENT}@{IDENT}{S}* | | |
748 {IDENT}@{IDENT}.{IDENT}{S}* { | |
749 LEXER_DEBUG ("{IDENT}@{IDENT}{S}*|{IDENT}@{IDENT}.{IDENT}{S}*"); | |
750 | |
751 int id_tok = handle_superclass_identifier (); | |
752 | |
753 if (id_tok >= 0) | |
754 { | |
755 lexer_flags.looking_for_object_index = true; | |
756 | |
757 COUNT_TOK_AND_RETURN (SUPERCLASSREF); | |
758 } | |
759 } | |
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760 |
9476 | 761 %{ |
762 // Metaclass query | |
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763 %} |
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764 |
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765 \?{IDENT}{S}* | |
9476 | 766 \?{IDENT}.{IDENT}{S}* { |
767 LEXER_DEBUG ("\?{IDENT}{S}* | \?{IDENT}.{IDENT}{S}*"); | |
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768 |
9476 | 769 int id_tok = handle_meta_identifier (); |
770 | |
771 if (id_tok >= 0) | |
772 { | |
773 lexer_flags.looking_for_object_index = true; | |
774 | |
775 COUNT_TOK_AND_RETURN (METAQUERY); | |
776 } | |
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777 } |
9476 | 778 |
779 %{ | |
780 // Function handles and superclass references | |
4342 | 781 %} |
782 | |
4930 | 783 "@" { |
8535 | 784 LEXER_DEBUG ("@"); |
785 | |
4930 | 786 current_input_column++; |
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787 |
4930 | 788 lexer_flags.quote_is_transpose = false; |
789 lexer_flags.convert_spaces_to_comma = false; | |
790 lexer_flags.looking_at_function_handle++; | |
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791 lexer_flags.looking_for_object_index = false; |
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792 lexer_flags.at_beginning_of_statement = false; |
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793 |
4930 | 794 COUNT_TOK_AND_RETURN ('@'); |
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795 |
4342 | 796 } |
797 | |
798 %{ | |
968 | 799 // A new line character. New line characters inside matrix constants |
4208 | 800 // are handled by the <MATRIX_START> start state code above. If closest |
985 | 801 // nesting is inside parentheses, don't return a row separator. |
968 | 802 %} |
803 | |
967 | 804 {NL} { |
8535 | 805 LEXER_DEBUG ("{NL}"); |
806 | |
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807 input_line_number++; |
967 | 808 current_input_column = 1; |
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809 |
2857 | 810 lexer_flags.quote_is_transpose = false; |
811 lexer_flags.convert_spaces_to_comma = true; | |
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812 |
1826 | 813 if (nesting_level.none ()) |
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814 { |
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815 lexer_flags.at_beginning_of_statement = true; |
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816 COUNT_TOK_AND_RETURN ('\n'); |
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817 } |
4037 | 818 else if (nesting_level.is_paren ()) |
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819 { |
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820 lexer_flags.at_beginning_of_statement = false; |
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821 gripe_matlab_incompatible ("bare newline inside parentheses"); |
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822 } |
4608 | 823 else if (nesting_level.is_bracket_or_brace ()) |
985 | 824 return LEXICAL_ERROR; |
967 | 825 } |
1 | 826 |
968 | 827 %{ |
828 // Single quote can either be the beginning of a string or a transpose | |
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829 // operator. |
968 | 830 %} |
831 | |
967 | 832 "'" { |
8535 | 833 LEXER_DEBUG ("'"); |
834 | |
967 | 835 current_input_column++; |
2857 | 836 lexer_flags.convert_spaces_to_comma = true; |
1 | 837 |
1826 | 838 if (lexer_flags.quote_is_transpose) |
967 | 839 { |
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840 do_comma_insert_check (); |
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841 COUNT_TOK_AND_RETURN (QUOTE); |
967 | 842 } |
843 else | |
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844 { |
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845 int tok = handle_string ('\''); |
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846 COUNT_TOK_AND_RETURN (tok); |
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847 } |
967 | 848 } |
1 | 849 |
968 | 850 %{ |
971 | 851 // Double quotes always begin strings. |
852 %} | |
853 | |
973 | 854 \" { |
8535 | 855 LEXER_DEBUG ("\""); |
856 | |
973 | 857 current_input_column++; |
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858 int tok = handle_string ('"'); |
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859 |
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860 COUNT_TOK_AND_RETURN (tok); |
973 | 861 } |
971 | 862 |
863 %{ | |
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864 // Gobble comments. |
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865 %} |
968 | 866 |
967 | 867 {CCHAR} { |
8535 | 868 LEXER_DEBUG ("{CCHAR}"); |
869 | |
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870 lexer_flags.looking_for_object_index = false; |
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871 |
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872 xunput (yytext[0], yytext); |
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873 |
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874 bool eof = false; |
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875 int tok = process_comment (false, eof); |
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876 |
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877 if (eof) |
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878 TOK_RETURN (END_OF_INPUT); |
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879 else if (tok > 0) |
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880 COUNT_TOK_AND_RETURN (tok); |
967 | 881 } |
440 | 882 |
968 | 883 %{ |
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884 // Block comments. |
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885 %} |
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886 |
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887 ^{S}*{CCHAR}\{{S}*{NL} { |
8535 | 888 LEXER_DEBUG ("^{S}*{CCHAR}\\{{S}*{NL}"); |
889 | |
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890 lexer_flags.looking_for_object_index = false; |
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891 |
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892 input_line_number++; |
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893 current_input_column = 1; |
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894 block_comment_nesting_level++; |
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895 promptflag--; |
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896 |
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897 bool eof = false; |
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898 process_comment (true, eof); |
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899 } |
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900 |
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901 %{ |
968 | 902 // Other operators. |
903 %} | |
904 | |
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905 ":" { LEXER_DEBUG (":"); BIN_OP_RETURN (':', false, false); } |
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906 |
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907 ".+" { LEXER_DEBUG (".+"); XBIN_OP_RETURN (EPLUS, false, false); } |
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908 ".-" { LEXER_DEBUG (".-"); XBIN_OP_RETURN (EMINUS, false, false); } |
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909 ".*" { LEXER_DEBUG (".*"); BIN_OP_RETURN (EMUL, false, false); } |
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910 "./" { LEXER_DEBUG ("./"); BIN_OP_RETURN (EDIV, false, false); } |
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911 ".\\" { LEXER_DEBUG (".\\"); BIN_OP_RETURN (ELEFTDIV, false, false); } |
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912 ".^" { LEXER_DEBUG (".^"); BIN_OP_RETURN (EPOW, false, false); } |
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913 ".**" { LEXER_DEBUG (".**"); XBIN_OP_RETURN (EPOW, false, false); } |
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914 ".'" { LEXER_DEBUG (".'"); do_comma_insert_check (); BIN_OP_RETURN (TRANSPOSE, true, false); } |
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915 "++" { LEXER_DEBUG ("++"); do_comma_insert_check (); XBIN_OP_RETURN_INTERNAL (PLUS_PLUS, true, false, true); } |
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916 "--" { LEXER_DEBUG ("--"); do_comma_insert_check (); XBIN_OP_RETURN_INTERNAL (MINUS_MINUS, true, false, true); } |
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917 "<=" { LEXER_DEBUG ("<="); BIN_OP_RETURN (EXPR_LE, false, false); } |
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918 "==" { LEXER_DEBUG ("=="); BIN_OP_RETURN (EXPR_EQ, false, false); } |
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919 "~=" { LEXER_DEBUG ("~="); BIN_OP_RETURN (EXPR_NE, false, false); } |
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920 "!=" { LEXER_DEBUG ("!="); XBIN_OP_RETURN (EXPR_NE, false, false); } |
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921 ">=" { LEXER_DEBUG (">="); BIN_OP_RETURN (EXPR_GE, false, false); } |
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922 "&" { LEXER_DEBUG ("&"); BIN_OP_RETURN (EXPR_AND, false, false); } |
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923 "|" { LEXER_DEBUG ("|"); BIN_OP_RETURN (EXPR_OR, false, false); } |
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924 "<" { LEXER_DEBUG ("<"); BIN_OP_RETURN (EXPR_LT, false, false); } |
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925 ">" { LEXER_DEBUG (">"); BIN_OP_RETURN (EXPR_GT, false, false); } |
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926 "+" { LEXER_DEBUG ("+"); BIN_OP_RETURN ('+', false, false); } |
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927 "-" { LEXER_DEBUG ("-"); BIN_OP_RETURN ('-', false, false); } |
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928 "*" { LEXER_DEBUG ("*"); BIN_OP_RETURN ('*', false, false); } |
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929 "/" { LEXER_DEBUG ("/"); BIN_OP_RETURN ('/', false, false); } |
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930 "\\" { LEXER_DEBUG ("\\"); BIN_OP_RETURN (LEFTDIV, false, false); } |
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931 ";" { LEXER_DEBUG (";"); BIN_OP_RETURN (';', true, true); } |
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932 "," { LEXER_DEBUG (","); BIN_OP_RETURN (',', true, ! lexer_flags.looking_at_object_index.front ()); } |
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933 "^" { LEXER_DEBUG ("^"); BIN_OP_RETURN (POW, false, false); } |
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934 "**" { LEXER_DEBUG ("**"); XBIN_OP_RETURN (POW, false, false); } |
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935 "=" { LEXER_DEBUG ("="); BIN_OP_RETURN ('=', true, false); } |
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936 "&&" { LEXER_DEBUG ("&&"); BIN_OP_RETURN (EXPR_AND_AND, false, false); } |
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937 "||" { LEXER_DEBUG ("||"); BIN_OP_RETURN (EXPR_OR_OR, false, false); } |
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938 "<<" { LEXER_DEBUG ("<<"); XBIN_OP_RETURN (LSHIFT, false, false); } |
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939 ">>" { LEXER_DEBUG (">>"); XBIN_OP_RETURN (RSHIFT, false, false); } |
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940 |
967 | 941 {NOT} { |
8535 | 942 LEXER_DEBUG ("{NOT}"); |
943 | |
4037 | 944 if (yytext[0] == '~') |
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945 BIN_OP_RETURN (EXPR_NOT, false, false); |
4037 | 946 else |
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947 XBIN_OP_RETURN (EXPR_NOT, false, false); |
967 | 948 } |
1 | 949 |
967 | 950 "(" { |
8535 | 951 LEXER_DEBUG ("("); |
952 | |
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953 // If we are looking for an object index, then push TRUE for |
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954 // looking_at_object_index. Otherwise, just push whatever state |
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955 // is current (so that we can pop it off the stack when we find |
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956 // the matching close paren). |
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|
957 |
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958 lexer_flags.looking_at_object_index.push_front |
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959 (lexer_flags.looking_for_object_index); |
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960 |
4131 | 961 lexer_flags.looking_at_indirect_ref = false; |
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962 lexer_flags.looking_for_object_index = false; |
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963 lexer_flags.at_beginning_of_statement = false; |
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964 |
1826 | 965 nesting_level.paren (); |
985 | 966 promptflag--; |
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967 |
967 | 968 TOK_RETURN ('('); |
969 } | |
970 | |
971 ")" { | |
8535 | 972 LEXER_DEBUG (")"); |
973 | |
1826 | 974 nesting_level.remove (); |
967 | 975 current_input_column++; |
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976 |
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977 lexer_flags.looking_at_object_index.pop_front (); |
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978 |
2857 | 979 lexer_flags.quote_is_transpose = true; |
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980 lexer_flags.convert_spaces_to_comma |
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981 = (nesting_level.is_bracket_or_brace () |
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982 && ! lexer_flags.looking_at_anon_fcn_args); |
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983 lexer_flags.looking_for_object_index = true; |
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984 lexer_flags.at_beginning_of_statement = false; |
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985 |
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986 if (lexer_flags.looking_at_anon_fcn_args) |
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987 lexer_flags.looking_at_anon_fcn_args = false; |
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988 |
1001 | 989 do_comma_insert_check (); |
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990 |
4910 | 991 COUNT_TOK_AND_RETURN (')'); |
967 | 992 } |
993 | |
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994 "." { |
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995 LEXER_DEBUG ("."); |
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996 |
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997 lexer_flags.looking_for_object_index = false; |
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998 lexer_flags.at_beginning_of_statement = false; |
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999 |
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1000 TOK_RETURN ('.'); |
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1001 } |
8535 | 1002 |
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1003 "+=" { LEXER_DEBUG ("+="); XBIN_OP_RETURN (ADD_EQ, false, false); } |
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1004 "-=" { LEXER_DEBUG ("-="); XBIN_OP_RETURN (SUB_EQ, false, false); } |
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1005 "*=" { LEXER_DEBUG ("*="); XBIN_OP_RETURN (MUL_EQ, false, false); } |
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1006 "/=" { LEXER_DEBUG ("/="); XBIN_OP_RETURN (DIV_EQ, false, false); } |
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1007 "\\=" { LEXER_DEBUG ("\\="); XBIN_OP_RETURN (LEFTDIV_EQ, false, false); } |
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1008 ".+=" { LEXER_DEBUG (".+="); XBIN_OP_RETURN (ADD_EQ, false, false); } |
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1009 ".-=" { LEXER_DEBUG (".-="); XBIN_OP_RETURN (SUB_EQ, false, false); } |
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1010 ".*=" { LEXER_DEBUG (".*="); XBIN_OP_RETURN (EMUL_EQ, false, false); } |
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1011 "./=" { LEXER_DEBUG ("./="); XBIN_OP_RETURN (EDIV_EQ, false, false); } |
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1012 ".\\=" { LEXER_DEBUG (".\\="); XBIN_OP_RETURN (ELEFTDIV_EQ, false, false); } |
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1013 {POW}= { LEXER_DEBUG ("{POW}="); XBIN_OP_RETURN (POW_EQ, false, false); } |
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1014 {EPOW}= { LEXER_DEBUG ("{EPOW}="); XBIN_OP_RETURN (EPOW_EQ, false, false); } |
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1015 "&=" { LEXER_DEBUG ("&="); XBIN_OP_RETURN (AND_EQ, false, false); } |
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1016 "|=" { LEXER_DEBUG ("|="); XBIN_OP_RETURN (OR_EQ, false, false); } |
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1017 "<<=" { LEXER_DEBUG ("<<="); XBIN_OP_RETURN (LSHIFT_EQ, false, false); } |
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1018 ">>=" { LEXER_DEBUG (">>="); XBIN_OP_RETURN (RSHIFT_EQ, false, false); } |
2877 | 1019 |
4608 | 1020 \{{S}* { |
8535 | 1021 LEXER_DEBUG ("\\{{S}*"); |
1022 | |
3351 | 1023 nesting_level.brace (); |
4608 | 1024 |
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1025 lexer_flags.looking_at_object_index.push_front |
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1026 (lexer_flags.looking_for_object_index); |
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1027 |
4608 | 1028 current_input_column += yyleng; |
1029 lexer_flags.quote_is_transpose = false; | |
1030 lexer_flags.convert_spaces_to_comma = true; | |
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1031 lexer_flags.looking_for_object_index = false; |
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1032 lexer_flags.at_beginning_of_statement = false; |
4608 | 1033 |
3351 | 1034 promptflag--; |
4608 | 1035 eat_whitespace (); |
1036 | |
4613 | 1037 lexer_flags.braceflag++; |
4608 | 1038 BEGIN (MATRIX_START); |
4910 | 1039 COUNT_TOK_AND_RETURN ('{'); |
3351 | 1040 } |
1041 | |
1042 "}" { | |
8535 | 1043 LEXER_DEBUG ("}"); |
1044 | |
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1045 lexer_flags.looking_at_object_index.pop_front (); |
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1046 |
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1047 lexer_flags.looking_for_object_index = true; |
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1048 lexer_flags.at_beginning_of_statement = false; |
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1049 |
3351 | 1050 nesting_level.remove (); |
1051 | |
4608 | 1052 TOK_RETURN ('}'); |
3351 | 1053 } |
1054 | |
968 | 1055 %{ |
2066 | 1056 // Unrecognized input is a lexical error. |
968 | 1057 %} |
1 | 1058 |
2042 | 1059 . { |
8535 | 1060 LEXER_DEBUG ("."); |
1061 | |
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1062 xunput (yytext[0], yytext); |
4248 | 1063 |
7728
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1064 int c = text_yyinput (); |
4248 | 1065 |
1066 if (c != EOF) | |
4240 | 1067 { |
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1068 current_input_column++; |
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1069 |
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1070 error ("invalid character `%s' (ASCII %d) near line %d, column %d", |
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1071 undo_string_escape (static_cast<char> (c)), c, |
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1072 input_line_number, current_input_column); |
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1073 |
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1074 return LEXICAL_ERROR; |
4240 | 1075 } |
1076 else | |
1077 TOK_RETURN (END_OF_INPUT); | |
2066 | 1078 } |
1 | 1079 |
1080 %% | |
1081 | |
767 | 1082 // GAG. |
1083 // | |
1084 // If we're reading a matrix and the next character is '[', make sure | |
1085 // that we insert a comma ahead of it. | |
1086 | |
146 | 1087 void |
1 | 1088 do_comma_insert_check (void) |
1089 { | |
1001 | 1090 int spc_gobbled = eat_continuation (); |
2970 | 1091 |
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1092 int c = text_yyinput (); |
2970 | 1093 |
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1094 xunput (c, yytext); |
2970 | 1095 |
1001 | 1096 if (spc_gobbled) |
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1097 xunput (' ', yytext); |
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1098 |
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1099 lexer_flags.do_comma_insert = (! lexer_flags.looking_at_object_index.front () |
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1100 && lexer_flags.bracketflag && c == '['); |
1 | 1101 } |
1102 | |
767 | 1103 // Fix things up for errors or interrupts. The parser is never called |
1104 // recursively, so it is always safe to reinitialize its state before | |
1105 // doing any parsing. | |
1106 | |
1 | 1107 void |
1108 reset_parser (void) | |
1109 { | |
1826 | 1110 // Start off on the right foot. |
4323 | 1111 BEGIN (INITIAL); |
4318 | 1112 |
3883 | 1113 parser_end_of_input = false; |
4238 | 1114 |
1115 while (! symtab_context.empty ()) | |
1116 symtab_context.pop (); | |
287 | 1117 |
1826 | 1118 // We do want a prompt by default. |
1 | 1119 promptflag = 1; |
287 | 1120 |
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1121 // We are not in a block comment. |
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1122 block_comment_nesting_level = 0; |
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1123 |
3351 | 1124 // Error may have occurred inside some brackets, braces, or parentheses. |
985 | 1125 nesting_level.clear (); |
287 | 1126 |
1826 | 1127 // Clear out the stack of token info used to track line and column |
1128 // numbers. | |
143 | 1129 while (! token_stack.empty ()) |
4214 | 1130 { |
1131 delete token_stack.top (); | |
1132 token_stack.pop (); | |
1133 } | |
287 | 1134 |
1826 | 1135 // Can be reset by defining a function. |
9476 | 1136 if (! (reading_script_file || reading_fcn_file || reading_classdef_file)) |
985 | 1137 { |
1138 current_input_column = 1; | |
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1139 input_line_number = command_editor::current_command_number (); |
985 | 1140 } |
287 | 1141 |
1826 | 1142 // Only ask for input from stdin if we are expecting interactive |
1143 // input. | |
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1144 |
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1145 if (! quitting_gracefully |
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1146 && (interactive || forced_interactive) |
3880 | 1147 && ! (reading_fcn_file |
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1148 || reading_classdef_file |
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1149 || reading_script_file |
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1150 || get_input_from_eval_string |
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1151 || input_from_startup_file)) |
287 | 1152 yyrestart (stdin); |
991 | 1153 |
1826 | 1154 // Clear the buffer for help text. |
4426 | 1155 while (! help_buf.empty ()) |
1156 help_buf.pop (); | |
1755 | 1157 |
1826 | 1158 // Reset other flags. |
1159 lexer_flags.init (); | |
1 | 1160 } |
1161 | |
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1162 static void |
8535 | 1163 display_character (char c) |
1164 { | |
1165 if (isgraph (c)) | |
1166 std::cerr << c; | |
1167 else | |
1168 switch (c) | |
1169 { | |
1170 case 0: | |
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1171 std::cerr << "NUL"; |
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1172 break; |
8535 | 1173 |
1174 case 1: | |
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1175 std::cerr << "SOH"; |
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1176 break; |
8535 | 1177 |
1178 case 2: | |
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1179 std::cerr << "STX"; |
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1180 break; |
8535 | 1181 |
1182 case 3: | |
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1183 std::cerr << "ETX"; |
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1184 break; |
8535 | 1185 |
1186 case 4: | |
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1187 std::cerr << "EOT"; |
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1188 break; |
8535 | 1189 |
1190 case 5: | |
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1191 std::cerr << "ENQ"; |
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1192 break; |
8535 | 1193 |
1194 case 6: | |
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1195 std::cerr << "ACK"; |
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1196 break; |
8535 | 1197 |
1198 case 7: | |
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1199 std::cerr << "\\a"; |
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1200 break; |
8535 | 1201 |
1202 case 8: | |
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1203 std::cerr << "\\b"; |
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1204 break; |
8535 | 1205 |
1206 case 9: | |
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1207 std::cerr << "\\t"; |
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1208 break; |
8535 | 1209 |
1210 case 10: | |
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1211 std::cerr << "\\n"; |
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1212 break; |
8535 | 1213 |
1214 case 11: | |
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1215 std::cerr << "\\v"; |
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1216 break; |
8535 | 1217 |
1218 case 12: | |
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1219 std::cerr << "\\f"; |
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1220 break; |
8535 | 1221 |
1222 case 13: | |
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1223 std::cerr << "\\r"; |
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1224 break; |
8535 | 1225 |
1226 case 14: | |
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1227 std::cerr << "SO"; |
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|
1228 break; |
8535 | 1229 |
1230 case 15: | |
10315
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1231 std::cerr << "SI"; |
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|
1232 break; |
8535 | 1233 |
1234 case 16: | |
10315
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|
1235 std::cerr << "DLE"; |
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diff
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|
1236 break; |
8535 | 1237 |
1238 case 17: | |
10315
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untabify src C++ source files
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|
1239 std::cerr << "DC1"; |
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untabify src C++ source files
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diff
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|
1240 break; |
8535 | 1241 |
1242 case 18: | |
10315
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untabify src C++ source files
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|
1243 std::cerr << "DC2"; |
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untabify src C++ source files
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diff
changeset
|
1244 break; |
8535 | 1245 |
1246 case 19: | |
10315
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untabify src C++ source files
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|
1247 std::cerr << "DC3"; |
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untabify src C++ source files
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diff
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|
1248 break; |
8535 | 1249 |
1250 case 20: | |
10315
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untabify src C++ source files
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diff
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|
1251 std::cerr << "DC4"; |
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untabify src C++ source files
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diff
changeset
|
1252 break; |
8535 | 1253 |
1254 case 21: | |
10315
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untabify src C++ source files
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diff
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|
1255 std::cerr << "NAK"; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
1256 break; |
8535 | 1257 |
1258 case 22: | |
10315
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untabify src C++ source files
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diff
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|
1259 std::cerr << "SYN"; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
1260 break; |
8535 | 1261 |
1262 case 23: | |
10315
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untabify src C++ source files
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diff
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|
1263 std::cerr << "ETB"; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
1264 break; |
8535 | 1265 |
1266 case 24: | |
10315
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untabify src C++ source files
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diff
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|
1267 std::cerr << "CAN"; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
1268 break; |
8535 | 1269 |
1270 case 25: | |
10315
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untabify src C++ source files
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diff
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|
1271 std::cerr << "EM"; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
1272 break; |
8535 | 1273 |
1274 case 26: | |
10315
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untabify src C++ source files
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diff
changeset
|
1275 std::cerr << "SUB"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
1276 break; |
8535 | 1277 |
1278 case 27: | |
10315
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untabify src C++ source files
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diff
changeset
|
1279 std::cerr << "ESC"; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
1280 break; |
8535 | 1281 |
1282 case 28: | |
10315
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diff
changeset
|
1283 std::cerr << "FS"; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
1284 break; |
8535 | 1285 |
1286 case 29: | |
10315
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untabify src C++ source files
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diff
changeset
|
1287 std::cerr << "GS"; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
1288 break; |
8535 | 1289 |
1290 case 30: | |
10315
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untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
1291 std::cerr << "RS"; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
1292 break; |
8535 | 1293 |
1294 case 31: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
1295 std::cerr << "US"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
1296 break; |
8535 | 1297 |
1298 case 32: | |
10315
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
1299 std::cerr << "SPACE"; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
1300 break; |
8535 | 1301 |
1302 case 127: | |
10315
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diff
changeset
|
1303 std::cerr << "DEL"; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
1304 break; |
8535 | 1305 } |
1306 } | |
8745
6dc61981d18b
better handling of object indexing in lexer
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|
1307 |
6dc61981d18b
better handling of object indexing in lexer
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|
1308 static int |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
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|
1309 text_yyinput (void) |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
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diff
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|
1310 { |
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better handling of object indexing in lexer
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|
1311 int c = yyinput (); |
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better handling of object indexing in lexer
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|
1312 |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
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|
1313 if (lexer_debug_flag) |
6dc61981d18b
better handling of object indexing in lexer
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|
1314 { |
6dc61981d18b
better handling of object indexing in lexer
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|
1315 std::cerr << "I: "; |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
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changeset
|
1316 display_character (c); |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
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|
1317 std::cerr << std::endl; |
6dc61981d18b
better handling of object indexing in lexer
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|
1318 } |
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better handling of object indexing in lexer
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|
1319 |
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better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
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|
1320 // Convert CRLF into just LF and single CR into LF. |
6dc61981d18b
better handling of object indexing in lexer
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|
1321 |
6dc61981d18b
better handling of object indexing in lexer
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|
1322 if (c == '\r') |
6dc61981d18b
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|
1323 { |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
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changeset
|
1324 c = yyinput (); |
6dc61981d18b
better handling of object indexing in lexer
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|
1325 |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
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changeset
|
1326 if (lexer_debug_flag) |
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changeset
|
1327 { |
57a59eae83cc
untabify src C++ source files
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changeset
|
1328 std::cerr << "I: "; |
57a59eae83cc
untabify src C++ source files
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changeset
|
1329 display_character (c); |
57a59eae83cc
untabify src C++ source files
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changeset
|
1330 std::cerr << std::endl; |
57a59eae83cc
untabify src C++ source files
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|
1331 } |
8745
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better handling of object indexing in lexer
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|
1332 |
6dc61981d18b
better handling of object indexing in lexer
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changeset
|
1333 if (c != '\n') |
10315
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untabify src C++ source files
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changeset
|
1334 { |
57a59eae83cc
untabify src C++ source files
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changeset
|
1335 xunput (c, yytext); |
57a59eae83cc
untabify src C++ source files
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changeset
|
1336 c = '\n'; |
57a59eae83cc
untabify src C++ source files
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|
1337 } |
8745
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|
1338 } |
6dc61981d18b
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changeset
|
1339 |
6dc61981d18b
better handling of object indexing in lexer
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|
1340 if (c == '\n') |
6dc61981d18b
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changeset
|
1341 input_line_number++; |
6dc61981d18b
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|
1342 |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
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|
1343 return c; |
6dc61981d18b
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|
1344 } |
6dc61981d18b
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changeset
|
1345 |
8535 | 1346 static void |
8447
adab48231a03
make input_line_number work again
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changeset
|
1347 xunput (char c, char *buf) |
adab48231a03
make input_line_number work again
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diff
changeset
|
1348 { |
8535 | 1349 if (lexer_debug_flag) |
1350 { | |
1351 std::cerr << "U: "; | |
1352 display_character (c); | |
1353 std::cerr << std::endl; | |
1354 } | |
1355 | |
8447
adab48231a03
make input_line_number work again
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diff
changeset
|
1356 if (c == '\n') |
adab48231a03
make input_line_number work again
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changeset
|
1357 input_line_number--; |
adab48231a03
make input_line_number work again
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changeset
|
1358 |
adab48231a03
make input_line_number work again
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|
1359 yyunput (c, buf); |
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|
1360 } |
adab48231a03
make input_line_number work again
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|
1361 |
767 | 1362 // If we read some newlines, we need figure out what column we're |
1363 // really looking at. | |
1364 | |
1 | 1365 static void |
1366 fixup_column_count (char *s) | |
1367 { | |
1368 char c; | |
1369 while ((c = *s++) != '\0') | |
1370 { | |
1371 if (c == '\n') | |
8447
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|
1372 { |
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|
1373 input_line_number++; |
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|
1374 current_input_column = 1; |
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|
1375 } |
1 | 1376 else |
10315
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|
1377 current_input_column++; |
1 | 1378 } |
1379 } | |
1380 | |
767 | 1381 // Include these so that we don't have to link to libfl.a. |
246 | 1382 |
3332 | 1383 int |
1 | 1384 yywrap (void) |
1385 { | |
287 | 1386 return 1; |
1 | 1387 } |
1388 | |
767 | 1389 // Tell us all what the current buffer is. |
1390 | |
1 | 1391 YY_BUFFER_STATE |
1392 current_buffer (void) | |
1393 { | |
1394 return YY_CURRENT_BUFFER; | |
1395 } | |
1396 | |
767 | 1397 // Create a new buffer. |
1398 | |
1 | 1399 YY_BUFFER_STATE |
1400 create_buffer (FILE *f) | |
1401 { | |
1402 return yy_create_buffer (f, YY_BUF_SIZE); | |
1403 } | |
1404 | |
767 | 1405 // Start reading a new buffer. |
1406 | |
1 | 1407 void |
1408 switch_to_buffer (YY_BUFFER_STATE buf) | |
1409 { | |
1410 yy_switch_to_buffer (buf); | |
1411 } | |
1412 | |
767 | 1413 // Delete a buffer. |
1414 | |
1 | 1415 void |
1416 delete_buffer (YY_BUFFER_STATE buf) | |
1417 { | |
1418 yy_delete_buffer (buf); | |
1419 } | |
1420 | |
13973
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clean up parser memory on exit
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1421 // Delete all buffers from the stack. |
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1422 void |
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1423 clear_all_buffers (void) |
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|
1424 { |
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1425 while (current_buffer ()) |
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|
1426 octave_pop_buffer_state (); |
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1427 } |
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1428 |
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|
1429 void |
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|
1430 cleanup_parser (void) |
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|
1431 { |
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1432 reset_parser (); |
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1433 |
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1434 clear_all_buffers (); |
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1435 } |
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|
1436 |
767 | 1437 // Restore a buffer (for unwind-prot). |
1438 | |
1 | 1439 void |
1440 restore_input_buffer (void *buf) | |
1441 { | |
2861 | 1442 switch_to_buffer (static_cast<YY_BUFFER_STATE> (buf)); |
1 | 1443 } |
1444 | |
767 | 1445 // Delete a buffer (for unwind-prot). |
1446 | |
1 | 1447 void |
1448 delete_input_buffer (void *buf) | |
1449 { | |
2861 | 1450 delete_buffer (static_cast<YY_BUFFER_STATE> (buf)); |
1 | 1451 } |
1452 | |
8745
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1453 static bool |
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1454 inside_any_object_index (void) |
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1455 { |
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|
1456 bool retval = false; |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
1457 |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
1458 for (std::list<bool>::const_iterator i = lexer_flags.looking_at_object_index.begin (); |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
1459 i != lexer_flags.looking_at_object_index.end (); i++) |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
1460 { |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
1461 if (*i) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1462 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1463 retval = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1464 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1465 } |
8745
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
1466 } |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
1467 |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
1468 return retval; |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
1469 } |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
1470 |
4238 | 1471 // Handle keywords. Return -1 if the keyword should be ignored. |
767 | 1472 |
1 | 1473 static int |
4867 | 1474 is_keyword_token (const std::string& s) |
1 | 1475 { |
3805 | 1476 int l = input_line_number; |
1477 int c = current_input_column; | |
1478 | |
1823 | 1479 int len = s.length (); |
922 | 1480 |
5088 | 1481 const octave_kw *kw = octave_kw_hash::in_word_set (s.c_str (), len); |
191 | 1482 |
1497 | 1483 if (kw) |
143 | 1484 { |
1497 | 1485 yylval.tok_val = 0; |
1486 | |
1487 switch (kw->kw_id) | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1488 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1489 case break_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1490 case catch_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1491 case continue_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1492 case else_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1493 case otherwise_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1494 case return_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1495 case unwind_protect_cleanup_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1496 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1497 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1498 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1499 case case_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1500 case elseif_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1501 case global_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1502 case static_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1503 case until_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1504 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1505 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1506 case end_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1507 if (! reading_classdef_file |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1508 && (inside_any_object_index () |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1509 || (lexer_flags.defining_func |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1510 && ! (lexer_flags.looking_at_return_list |
11464
21b5284fa78d
avoid error when parsing nested functions
John W. Eaton <jwe@octave.org>
parents:
11431
diff
changeset
|
1511 || lexer_flags.parsed_function_name.top ())))) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1512 return 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1513 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1514 yylval.tok_val = new token (token::simple_end, l, c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1515 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1516 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1517 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1518 case end_try_catch_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1519 yylval.tok_val = new token (token::try_catch_end, l, c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1520 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1521 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1522 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1523 case end_unwind_protect_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1524 yylval.tok_val = new token (token::unwind_protect_end, l, c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1525 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1526 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1527 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1528 case endfor_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1529 yylval.tok_val = new token (token::for_end, l, c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1530 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1531 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1532 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1533 case endfunction_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1534 yylval.tok_val = new token (token::function_end, l, c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1535 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1536 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1537 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1538 case endif_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1539 yylval.tok_val = new token (token::if_end, l, c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1540 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1541 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1542 |
13246 | 1543 case endparfor_kw: |
1544 yylval.tok_val = new token (token::parfor_end, l, c); | |
1545 lexer_flags.at_beginning_of_statement = true; | |
1546 break; | |
1547 | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1548 case endswitch_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1549 yylval.tok_val = new token (token::switch_end, l, c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1550 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1551 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1552 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1553 case endwhile_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1554 yylval.tok_val = new token (token::while_end, l, c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1555 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1556 break; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1557 |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1558 case endclassdef_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1559 yylval.tok_val = new token (token::classdef_end, l, c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1560 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1561 break; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1562 |
13249
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1563 case endenumeration_kw: |
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1564 yylval.tok_val = new token (token::enumeration_end, l, c); |
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1565 lexer_flags.at_beginning_of_statement = true; |
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1566 break; |
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1567 |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1568 case endevents_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1569 yylval.tok_val = new token (token::events_end, l, c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1570 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1571 break; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1572 |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1573 case endmethods_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1574 yylval.tok_val = new token (token::methods_end, l, c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1575 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1576 break; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1577 |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1578 case endproperties_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1579 yylval.tok_val = new token (token::properties_end, l, c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1580 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1581 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1582 |
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
|
1583 |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1584 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
|
1585 case parfor_kw: |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1586 case while_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1587 promptflag--; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1588 lexer_flags.looping++; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1589 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1590 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1591 case do_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1592 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1593 promptflag--; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1594 lexer_flags.looping++; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1595 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1596 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1597 case try_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1598 case unwind_protect_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1599 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1600 promptflag--; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1601 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1602 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1603 case if_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1604 case switch_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1605 promptflag--; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1606 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1607 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1608 case get_kw: |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1609 case set_kw: |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1610 // 'get' and 'set' are keywords in classdef method |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1611 // declarations. |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1612 if (! lexer_flags.maybe_classdef_get_set_method) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1613 return 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1614 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1615 |
13249
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1616 case enumeration_kw: |
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1617 case events_kw: |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1618 case methods_kw: |
13249
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1619 case properties_kw: |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1620 // 'properties', 'methods' and 'events' are keywords for |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1621 // classdef blocks. |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1622 if (! lexer_flags.parsing_classdef) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1623 return 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1624 // fall through ... |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1625 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1626 case classdef_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1627 // 'classdef' is always a keyword. |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1628 promptflag--; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1629 break; |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1630 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1631 case function_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1632 promptflag--; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1633 |
11367
b2191ebea12f
don't process input_event_hook when we are parsing a function
John W. Eaton <jwe@octave.org>
parents:
11217
diff
changeset
|
1634 lexer_flags.defining_func++; |
11464
21b5284fa78d
avoid error when parsing nested functions
John W. Eaton <jwe@octave.org>
parents:
11431
diff
changeset
|
1635 lexer_flags.parsed_function_name.push (false); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1636 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1637 if (! (reading_fcn_file || reading_script_file |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1638 || reading_classdef_file)) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1639 input_line_number = 1; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1640 break; |
1497 | 1641 |
3174 | 1642 case magic_file_kw: |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1643 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1644 if ((reading_fcn_file || reading_script_file |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1645 || reading_classdef_file) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1646 && ! curr_fcn_file_full_name.empty ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1647 yylval.tok_val = new token (curr_fcn_file_full_name, l, c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1648 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1649 yylval.tok_val = new token ("stdin", l, c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1650 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1651 break; |
3174 | 1652 |
1653 case magic_line_kw: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1654 yylval.tok_val = new token (static_cast<double> (l), "", l, c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1655 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1656 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1657 default: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1658 panic_impossible (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1659 } |
1497 | 1660 |
1661 if (! yylval.tok_val) | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1662 yylval.tok_val = new token (l, c); |
1497 | 1663 |
476 | 1664 token_stack.push (yylval.tok_val); |
1497 | 1665 |
1666 return kw->tok; | |
143 | 1667 } |
1 | 1668 |
1669 return 0; | |
1670 } | |
1671 | |
2702 | 1672 static bool |
3523 | 1673 is_variable (const std::string& name) |
2702 | 1674 { |
8001
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7898
diff
changeset
|
1675 return (symbol_table::is_variable (name) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1676 || (lexer_flags.pending_local_variables.find (name) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1677 != lexer_flags.pending_local_variables.end ())); |
2702 | 1678 } |
1679 | |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1680 static std::string |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1681 grab_block_comment (stream_reader& reader, bool& eof) |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1682 { |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1683 std::string buf; |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1684 |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1685 bool at_bol = true; |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1686 bool look_for_marker = false; |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1687 |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1688 bool warned_incompatible = false; |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1689 |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1690 int c = 0; |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1691 |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1692 while ((c = reader.getc ()) != EOF) |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1693 { |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1694 current_input_column++; |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1695 |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1696 if (look_for_marker) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1697 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1698 at_bol = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1699 look_for_marker = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1700 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1701 if (c == '{' || c == '}') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1702 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1703 std::string tmp_buf (1, static_cast<char> (c)); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1704 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1705 int type = c; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1706 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1707 bool done = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1708 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1709 while ((c = reader.getc ()) != EOF && ! done) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1710 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1711 current_input_column++; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1712 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1713 switch (c) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1714 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1715 case ' ': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1716 case '\t': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1717 tmp_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1718 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1719 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1720 case '\n': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1721 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1722 current_input_column = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1723 at_bol = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1724 done = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1725 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1726 if (type == '{') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1727 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1728 block_comment_nesting_level++; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1729 promptflag--; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1730 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1731 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1732 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1733 block_comment_nesting_level--; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1734 promptflag++; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1735 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1736 if (block_comment_nesting_level == 0) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1737 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1738 buf += grab_comment_block (reader, true, eof); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1739 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1740 return buf; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1741 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1742 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1743 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1744 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1745 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1746 default: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1747 at_bol = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1748 tmp_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1749 buf += tmp_buf; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1750 done = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1751 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1752 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1753 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1754 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1755 } |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1756 |
7898
cce16b4e0970
lex.l (grab_block_comment): Use parens around || expression within && expression
John W. Eaton <jwe@octave.org>
parents:
7728
diff
changeset
|
1757 if (at_bol && (c == '%' || c == '#')) |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1758 { |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1759 if (c == '#' && ! warned_incompatible) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1760 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1761 warned_incompatible = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1762 maybe_gripe_matlab_incompatible_comment (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1763 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1764 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1765 at_bol = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1766 look_for_marker = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1767 } |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1768 else |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1769 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1770 buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1771 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1772 if (c == '\n') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1773 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1774 current_input_column = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1775 at_bol = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1776 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1777 } |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1778 } |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1779 |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1780 if (c == EOF) |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1781 eof = true; |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1782 |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1783 return buf; |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1784 } |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1785 |
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1786 std::string |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1787 grab_comment_block (stream_reader& reader, bool at_bol, |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1788 bool& eof) |
1 | 1789 { |
4426 | 1790 std::string buf; |
1019 | 1791 |
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1792 // TRUE means we are at the beginning of a comment block. |
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1793 bool begin_comment = false; |
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1794 |
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1795 // TRUE means we are currently reading a comment block. |
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1796 bool in_comment = false; |
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1797 |
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1798 bool warned_incompatible = false; |
3665 | 1799 |
1019 | 1800 int c = 0; |
1 | 1801 |
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1802 while ((c = reader.getc ()) != EOF) |
1019 | 1803 { |
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1804 current_input_column++; |
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1805 |
2300 | 1806 if (begin_comment) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1807 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1808 if (c == '%' || c == '#') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1809 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1810 at_bol = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1811 continue; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1812 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1813 else if (at_bol && c == '{') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1814 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1815 std::string tmp_buf (1, static_cast<char> (c)); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1816 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1817 bool done = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1818 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1819 while ((c = reader.getc ()) != EOF && ! done) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1820 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1821 current_input_column++; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1822 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1823 switch (c) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1824 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1825 case ' ': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1826 case '\t': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1827 tmp_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1828 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1829 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1830 case '\n': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1831 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1832 current_input_column = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1833 at_bol = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1834 done = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1835 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1836 block_comment_nesting_level++; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1837 promptflag--; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1838 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1839 buf += grab_block_comment (reader, eof); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1840 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1841 in_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1842 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1843 if (eof) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1844 goto done; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1845 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1846 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1847 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1848 default: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1849 at_bol = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1850 tmp_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1851 buf += tmp_buf; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1852 done = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1853 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1854 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1855 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1856 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1857 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1858 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1859 at_bol = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1860 begin_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1861 } |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1862 } |
2300 | 1863 |
1019 | 1864 if (in_comment) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1865 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1866 buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1867 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1868 if (c == '\n') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1869 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1870 at_bol = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1871 current_input_column = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1872 in_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1873 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1874 // FIXME -- bailing out here prevents things like |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1875 // |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1876 // octave> # comment |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1877 // octave> x = 1 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1878 // |
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|
1879 // from failing at the command line, while still |
57a59eae83cc
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diff
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|
1880 // allowing blocks of comments to be grabbed properly |
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diff
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|
1881 // for function doc strings. But only the first line of |
57a59eae83cc
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parents:
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diff
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|
1882 // a mult-line doc string will be picked up for |
57a59eae83cc
untabify src C++ source files
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parents:
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diff
changeset
|
1883 // functions defined on the command line. We need a |
57a59eae83cc
untabify src C++ source files
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parents:
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diff
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|
1884 // better way of collecting these comments... |
57a59eae83cc
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changeset
|
1885 if (! (reading_fcn_file || reading_script_file)) |
57a59eae83cc
untabify src C++ source files
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parents:
10182
diff
changeset
|
1886 goto done; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
1887 } |
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diff
changeset
|
1888 } |
1019 | 1889 else |
10315
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diff
changeset
|
1890 { |
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parents:
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diff
changeset
|
1891 switch (c) |
57a59eae83cc
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parents:
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diff
changeset
|
1892 { |
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parents:
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diff
changeset
|
1893 case ' ': |
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parents:
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diff
changeset
|
1894 case '\t': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1895 break; |
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parents:
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diff
changeset
|
1896 |
57a59eae83cc
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diff
changeset
|
1897 case '#': |
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changeset
|
1898 if (! warned_incompatible) |
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|
1899 { |
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1900 warned_incompatible = true; |
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parents:
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diff
changeset
|
1901 maybe_gripe_matlab_incompatible_comment (c); |
57a59eae83cc
untabify src C++ source files
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parents:
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diff
changeset
|
1902 } |
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diff
changeset
|
1903 // fall through... |
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|
1904 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
1905 case '%': |
57a59eae83cc
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parents:
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diff
changeset
|
1906 in_comment = true; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
1907 begin_comment = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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10182
diff
changeset
|
1908 break; |
57a59eae83cc
untabify src C++ source files
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parents:
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diff
changeset
|
1909 |
57a59eae83cc
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diff
changeset
|
1910 default: |
57a59eae83cc
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diff
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|
1911 current_input_column--; |
57a59eae83cc
untabify src C++ source files
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diff
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|
1912 reader.ungetc (c); |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
1913 goto done; |
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|
1914 } |
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changeset
|
1915 } |
1019 | 1916 } |
991 | 1917 |
1019 | 1918 done: |
991 | 1919 |
7715
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1920 if (c == EOF) |
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parse scripts completely before executing
John W. Eaton <jwe@octave.org>
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|
1921 eof = true; |
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parse scripts completely before executing
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|
1922 |
4426 | 1923 return buf; |
1 | 1924 } |
1925 | |
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
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7715
diff
changeset
|
1926 class |
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1927 flex_stream_reader : public stream_reader |
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
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diff
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|
1928 { |
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
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diff
changeset
|
1929 public: |
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
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|
1930 flex_stream_reader (char *buf_arg) : stream_reader (), buf (buf_arg) { } |
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
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diff
changeset
|
1931 |
7728
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more consistent handling of CR/CRLF/LF line endings in lexer and parser
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1932 int getc (void) { return ::text_yyinput (); } |
8447
adab48231a03
make input_line_number work again
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|
1933 int ungetc (int c) { ::xunput (c, buf); return 0; } |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1934 |
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
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diff
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|
1935 private: |
12122
f4689107dd8c
Explicitly disallow copying in some classes.
Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
parents:
11586
diff
changeset
|
1936 |
f4689107dd8c
Explicitly disallow copying in some classes.
Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
parents:
11586
diff
changeset
|
1937 // No copying! |
f4689107dd8c
Explicitly disallow copying in some classes.
Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
parents:
11586
diff
changeset
|
1938 |
f4689107dd8c
Explicitly disallow copying in some classes.
Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
parents:
11586
diff
changeset
|
1939 flex_stream_reader (const flex_stream_reader&); |
f4689107dd8c
Explicitly disallow copying in some classes.
Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
parents:
11586
diff
changeset
|
1940 |
12174 | 1941 flex_stream_reader& operator = (const flex_stream_reader&); |
12122
f4689107dd8c
Explicitly disallow copying in some classes.
Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
parents:
11586
diff
changeset
|
1942 |
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
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diff
changeset
|
1943 char *buf; |
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
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diff
changeset
|
1944 }; |
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
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diff
changeset
|
1945 |
7715
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parse scripts completely before executing
John W. Eaton <jwe@octave.org>
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diff
changeset
|
1946 static int |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1947 process_comment (bool start_in_block, bool& eof) |
7715
5b4d278ec828
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diff
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|
1948 { |
5b4d278ec828
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|
1949 eof = false; |
5b4d278ec828
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diff
changeset
|
1950 |
5b4d278ec828
parse scripts completely before executing
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diff
changeset
|
1951 std::string help_txt; |
5b4d278ec828
parse scripts completely before executing
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diff
changeset
|
1952 |
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
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diff
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|
1953 if (! help_buf.empty ()) |
5b4d278ec828
parse scripts completely before executing
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diff
changeset
|
1954 help_txt = help_buf.top (); |
5b4d278ec828
parse scripts completely before executing
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diff
changeset
|
1955 |
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
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diff
changeset
|
1956 flex_stream_reader flex_reader (yytext); |
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1957 |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1958 // process_comment is only supposed to be called when we are not |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
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7722
diff
changeset
|
1959 // initially looking at a block comment. |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1960 |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1961 std::string txt = start_in_block |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1962 ? grab_block_comment (flex_reader, eof) |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1963 : grab_comment_block (flex_reader, false, eof); |
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1964 |
8535 | 1965 if (lexer_debug_flag) |
8536
de1b944d5306
lex.l: finish previous change
John W. Eaton <jwe@octave.org>
parents:
8535
diff
changeset
|
1966 std::cerr << "C: " << txt << std::endl; |
8535 | 1967 |
7715
5b4d278ec828
parse scripts completely before executing
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7634
diff
changeset
|
1968 if (help_txt.empty () && nesting_level.none ()) |
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
1969 { |
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
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7634
diff
changeset
|
1970 if (! help_buf.empty ()) |
10315
57a59eae83cc
untabify src C++ source files
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10182
diff
changeset
|
1971 help_buf.pop (); |
7715
5b4d278ec828
parse scripts completely before executing
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parents:
7634
diff
changeset
|
1972 |
5b4d278ec828
parse scripts completely before executing
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parents:
7634
diff
changeset
|
1973 help_buf.push (txt); |
5b4d278ec828
parse scripts completely before executing
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7634
diff
changeset
|
1974 } |
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1975 |
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
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diff
changeset
|
1976 octave_comment_buffer::append (txt); |
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
1977 |
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
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diff
changeset
|
1978 current_input_column = 1; |
5b4d278ec828
parse scripts completely before executing
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7634
diff
changeset
|
1979 lexer_flags.quote_is_transpose = false; |
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
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7634
diff
changeset
|
1980 lexer_flags.convert_spaces_to_comma = true; |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
1981 lexer_flags.at_beginning_of_statement = true; |
7715
5b4d278ec828
parse scripts completely before executing
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7634
diff
changeset
|
1982 |
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
1983 if (YY_START == COMMAND_START) |
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
1984 BEGIN (INITIAL); |
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
1985 |
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
1986 if (nesting_level.none ()) |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
1987 return '\n'; |
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
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7634
diff
changeset
|
1988 else if (nesting_level.is_bracket_or_brace ()) |
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
1989 return ';'; |
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
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7634
diff
changeset
|
1990 else |
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
1991 return 0; |
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
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7634
diff
changeset
|
1992 } |
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
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diff
changeset
|
1993 |
767 | 1994 // Return 1 if the given character matches any character in the given |
1995 // string. | |
1996 | |
2857 | 1997 static bool |
2804 | 1998 match_any (char c, const char *s) |
1 | 1999 { |
2000 char tmp; | |
2001 while ((tmp = *s++) != '\0') | |
2002 { | |
2003 if (c == tmp) | |
10315
57a59eae83cc
untabify src C++ source files
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diff
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|
2004 return true; |
1 | 2005 } |
2857 | 2006 return false; |
1 | 2007 } |
2008 | |
767 | 2009 // Given information about the spacing surrounding an operator, |
2010 // return 1 if it looks like it should be treated as a binary | |
2011 // operator. For example, | |
2012 // | |
3774 | 2013 // [ 1 + 2 ] or [ 1+ 2] or [ 1+2 ] ==> binary |
2014 // | |
2015 // [ 1 +2 ] ==> unary | |
767 | 2016 |
2857 | 2017 static bool |
3246 | 2018 looks_like_bin_op (bool spc_prev, int next_char) |
1 | 2019 { |
3246 | 2020 bool spc_next = (next_char == ' ' || next_char == '\t'); |
2021 | |
608 | 2022 return ((spc_prev && spc_next) || ! spc_prev); |
1 | 2023 } |
2024 | |
3263 | 2025 // Recognize separators. If the separator is a CRLF pair, it is |
2026 // replaced by a single LF. | |
2027 | |
2028 static bool | |
2029 next_token_is_sep_op (void) | |
2030 { | |
2031 bool retval = false; | |
2032 | |
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
|
2033 int c = text_yyinput (); |
13820b9f5fd9
more consistent handling of CR/CRLF/LF line endings in lexer and parser
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2034 |
13820b9f5fd9
more consistent handling of CR/CRLF/LF line endings in lexer and parser
John W. Eaton <jwe@octave.org>
parents:
7723
diff
changeset
|
2035 retval = match_any (c, ",;\n]"); |
13820b9f5fd9
more consistent handling of CR/CRLF/LF line endings in lexer and parser
John W. Eaton <jwe@octave.org>
parents:
7723
diff
changeset
|
2036 |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2037 xunput (c, yytext); |
3263 | 2038 |
2039 return retval; | |
2040 } | |
2041 | |
767 | 2042 // Try to determine if the next token should be treated as a postfix |
2043 // unary operator. This is ugly, but it seems to do the right thing. | |
2044 | |
2857 | 2045 static bool |
3246 | 2046 next_token_is_postfix_unary_op (bool spc_prev) |
1 | 2047 { |
2857 | 2048 bool un_op = false; |
1 | 2049 |
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
|
2050 int c0 = text_yyinput (); |
1 | 2051 |
3246 | 2052 if (c0 == '\'' && ! spc_prev) |
2053 { | |
2054 un_op = true; | |
2055 } | |
2056 else if (c0 == '.') | |
2057 { | |
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
|
2058 int c1 = text_yyinput (); |
3246 | 2059 un_op = (c1 == '\''); |
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2060 xunput (c1, yytext); |
3246 | 2061 } |
4613 | 2062 else if (c0 == '+') |
2063 { | |
7728
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more consistent handling of CR/CRLF/LF line endings in lexer and parser
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2064 int c1 = text_yyinput (); |
4613 | 2065 un_op = (c1 == '+'); |
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|
2066 xunput (c1, yytext); |
4613 | 2067 } |
2068 else if (c0 == '-') | |
2069 { | |
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2070 int c1 = text_yyinput (); |
4613 | 2071 un_op = (c1 == '-'); |
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2072 xunput (c1, yytext); |
4613 | 2073 } |
1 | 2074 |
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2075 xunput (c0, yytext); |
1 | 2076 |
2077 return un_op; | |
2078 } | |
2079 | |
767 | 2080 // Try to determine if the next token should be treated as a binary |
3246 | 2081 // operator. |
1521 | 2082 // |
3246 | 2083 // This kluge exists because whitespace is not always ignored inside |
3774 | 2084 // the square brackets that are used to create matrix objects (though |
2085 // spacing only really matters in the cases that can be interpreted | |
2086 // either as binary ops or prefix unary ops: currently just +, -). | |
2087 // | |
3779 | 2088 // Note that a line continuation directly following a + or - operator |
2089 // (e.g., the characters '[' 'a' ' ' '+' '\' LFD 'b' ']') will be | |
2090 // parsed as a binary operator. | |
767 | 2091 |
2857 | 2092 static bool |
3246 | 2093 next_token_is_bin_op (bool spc_prev) |
1 | 2094 { |
2857 | 2095 bool bin_op = false; |
1 | 2096 |
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2097 int c0 = text_yyinput (); |
1 | 2098 |
2099 switch (c0) | |
2100 { | |
777 | 2101 case '+': |
2102 case '-': | |
3774 | 2103 { |
10315
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2104 int c1 = text_yyinput (); |
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2105 |
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2106 switch (c1) |
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2107 { |
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2108 case '+': |
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2109 case '-': |
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2110 // Unary ops, spacing doesn't matter. |
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2111 break; |
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2112 |
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2113 case '=': |
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2114 // Binary ops, spacing doesn't matter. |
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2115 bin_op = true; |
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2116 break; |
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2117 |
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2118 default: |
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2119 // Could be either, spacing matters. |
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2120 bin_op = looks_like_bin_op (spc_prev, c1); |
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2121 break; |
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|
2122 } |
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|
2123 |
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2124 xunput (c1, yytext); |
3774 | 2125 } |
2126 break; | |
2127 | |
2128 case ':': | |
3246 | 2129 case '/': |
2130 case '\\': | |
2131 case '^': | |
3774 | 2132 // Always a binary op (may also include /=, \=, and ^=). |
2133 bin_op = true; | |
1276 | 2134 break; |
2135 | |
3246 | 2136 // .+ .- ./ .\ .^ .* .** |
1554 | 2137 case '.': |
2138 { | |
10315
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2139 int c1 = text_yyinput (); |
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2140 |
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2141 if (match_any (c1, "+-/\\^*")) |
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2142 // Always a binary op (may also include .+=, .-=, ./=, ...). |
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2143 bin_op = true; |
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2144 else if (! isdigit (c1) && c1 != ' ' && c1 != '\t' && c1 != '.') |
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2145 // A structure element reference is a binary op. |
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2146 bin_op = true; |
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|
2147 |
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|
2148 xunput (c1, yytext); |
1554 | 2149 } |
2150 break; | |
2151 | |
3246 | 2152 // = == & && | || * ** |
2153 case '=': | |
1 | 2154 case '&': |
3246 | 2155 case '|': |
1 | 2156 case '*': |
3774 | 2157 // Always a binary op (may also include ==, &&, ||, **). |
2158 bin_op = true; | |
3246 | 2159 break; |
2160 | |
3774 | 2161 // < <= <> > >= |
1 | 2162 case '<': |
2163 case '>': | |
3774 | 2164 // Always a binary op (may also include <=, <>, >=). |
2165 bin_op = true; | |
2166 break; | |
2167 | |
2168 // ~= != | |
777 | 2169 case '~': |
2170 case '!': | |
3246 | 2171 { |
10315
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2172 int c1 = text_yyinput (); |
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2173 |
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2174 // ~ and ! can be unary ops, so require following =. |
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2175 if (c1 == '=') |
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2176 bin_op = true; |
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2177 |
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2178 xunput (c1, yytext); |
3246 | 2179 } |
1 | 2180 break; |
2181 | |
2182 default: | |
1276 | 2183 break; |
1 | 2184 } |
2185 | |
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2186 xunput (c0, yytext); |
1 | 2187 |
2188 return bin_op; | |
2189 } | |
2190 | |
767 | 2191 // Used to delete trailing white space from tokens. |
2192 | |
3536 | 2193 static std::string |
1 | 2194 strip_trailing_whitespace (char *s) |
2195 { | |
3523 | 2196 std::string retval = s; |
1 | 2197 |
1823 | 2198 size_t pos = retval.find_first_of (" \t"); |
1 | 2199 |
8021 | 2200 if (pos != std::string::npos) |
1823 | 2201 retval.resize (pos); |
1 | 2202 |
2203 return retval; | |
2204 } | |
2205 | |
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2206 // FIXME -- we need to handle block comments here. |
74f5e0c7de9e
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2207 |
3665 | 2208 static void |
2209 scan_for_comments (const char *text) | |
2210 { | |
2211 std::string comment_buf; | |
2212 | |
2213 bool in_comment = false; | |
2214 bool beginning_of_comment = false; | |
2215 | |
2216 int len = strlen (text); | |
2217 int i = 0; | |
2218 | |
2219 while (i < len) | |
2220 { | |
2221 char c = text[i++]; | |
2222 | |
2223 switch (c) | |
10315
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2224 { |
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2225 case '%': |
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|
2226 case '#': |
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|
2227 if (in_comment) |
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|
2228 { |
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|
2229 if (! beginning_of_comment) |
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2230 comment_buf += static_cast<char> (c); |
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|
2231 } |
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2232 else |
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|
2233 { |
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2234 maybe_gripe_matlab_incompatible_comment (c); |
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|
2235 in_comment = true; |
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|
2236 beginning_of_comment = true; |
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|
2237 } |
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|
2238 break; |
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|
2239 |
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2240 case '\n': |
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|
2241 if (in_comment) |
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2242 { |
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2243 comment_buf += static_cast<char> (c); |
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2244 octave_comment_buffer::append (comment_buf); |
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2245 comment_buf.resize (0); |
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2246 in_comment = false; |
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2247 beginning_of_comment = false; |
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2248 } |
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|
2249 break; |
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|
2250 |
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2251 default: |
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2252 if (in_comment) |
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2253 { |
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2254 comment_buf += static_cast<char> (c); |
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2255 beginning_of_comment = false; |
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2256 } |
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2257 break; |
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|
2258 } |
3665 | 2259 } |
2260 | |
2261 if (! comment_buf.empty ()) | |
2262 octave_comment_buffer::append (comment_buf); | |
2263 } | |
2264 | |
1001 | 2265 // Discard whitespace, including comments and continuations. |
1088 | 2266 // |
2267 // Return value is logical OR of the following values: | |
2268 // | |
1826 | 2269 // ATE_NOTHING : no spaces to eat |
1088 | 2270 // ATE_SPACE_OR_TAB : space or tab in input |
2271 // ATE_NEWLINE : bare new line in input | |
1001 | 2272 |
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2273 // FIXME -- we need to handle block comments here. |
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2274 |
1826 | 2275 static yum_yum |
975 | 2276 eat_whitespace (void) |
2277 { | |
1826 | 2278 yum_yum retval = ATE_NOTHING; |
3665 | 2279 |
2280 std::string comment_buf; | |
2281 | |
2857 | 2282 bool in_comment = false; |
3665 | 2283 bool beginning_of_comment = false; |
2284 | |
2285 int c = 0; | |
2286 | |
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2287 while ((c = text_yyinput ()) != EOF) |
975 | 2288 { |
2289 current_input_column++; | |
2290 | |
2291 switch (c) | |
10315
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2292 { |
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2293 case ' ': |
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2294 case '\t': |
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2295 if (in_comment) |
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2296 { |
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2297 comment_buf += static_cast<char> (c); |
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2298 beginning_of_comment = false; |
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2299 } |
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2300 retval |= ATE_SPACE_OR_TAB; |
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2301 break; |
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2302 |
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2303 case '\n': |
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2304 retval |= ATE_NEWLINE; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2305 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2306 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2307 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2308 octave_comment_buffer::append (comment_buf); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2309 comment_buf.resize (0); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2310 in_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2311 beginning_of_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2312 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2313 current_input_column = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2314 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2315 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2316 case '#': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2317 case '%': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2318 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2319 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2320 if (! beginning_of_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2321 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2322 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2323 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2324 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2325 maybe_gripe_matlab_incompatible_comment (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2326 in_comment = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2327 beginning_of_comment = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2328 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2329 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2330 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2331 case '.': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2332 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2333 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2334 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2335 beginning_of_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2336 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2337 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2338 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2339 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2340 if (have_ellipsis_continuation ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2341 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2342 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2343 goto done; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2344 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2345 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2346 case '\\': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2347 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2348 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2349 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2350 beginning_of_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2351 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2352 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2353 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2354 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2355 if (have_continuation ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2356 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2357 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2358 goto done; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2359 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2360 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2361 default: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2362 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2363 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2364 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2365 beginning_of_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2366 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2367 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2368 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2369 goto done; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2370 } |
975 | 2371 } |
2372 | |
3665 | 2373 if (! comment_buf.empty ()) |
2374 octave_comment_buffer::append (comment_buf); | |
2375 | |
975 | 2376 done: |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2377 xunput (c, yytext); |
1082 | 2378 current_input_column--; |
1001 | 2379 return retval; |
975 | 2380 } |
2381 | |
3220 | 2382 static inline bool |
2383 looks_like_hex (const char *s, int len) | |
2384 { | |
2385 return (len > 2 && s[0] == '0' && (s[1] == 'x' || s[1] == 'X')); | |
2386 } | |
2387 | |
975 | 2388 static void |
3246 | 2389 handle_number (void) |
972 | 2390 { |
3220 | 2391 double value = 0.0; |
2392 int nread = 0; | |
2393 | |
3598 | 2394 if (looks_like_hex (yytext, strlen (yytext))) |
3220 | 2395 { |
2396 unsigned long ival; | |
3598 | 2397 |
2398 nread = sscanf (yytext, "%lx", &ival); | |
2399 | |
3220 | 2400 value = static_cast<double> (ival); |
2401 } | |
2402 else | |
3598 | 2403 { |
2404 char *tmp = strsave (yytext); | |
2405 | |
2406 char *idx = strpbrk (tmp, "Dd"); | |
2621 | 2407 |
3598 | 2408 if (idx) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2409 *idx = 'e'; |
3598 | 2410 |
2411 nread = sscanf (tmp, "%lf", &value); | |
2412 | |
2413 delete [] tmp; | |
2414 } | |
972 | 2415 |
1826 | 2416 // If yytext doesn't contain a valid number, we are in deep doo doo. |
985 | 2417 |
972 | 2418 assert (nread == 1); |
2419 | |
3988 | 2420 lexer_flags.quote_is_transpose = true; |
2421 lexer_flags.convert_spaces_to_comma = true; | |
11217
521373e25613
correctly parse {1 2 {3 4}}
John W. Eaton <jwe@octave.org>
parents:
10426
diff
changeset
|
2422 lexer_flags.looking_for_object_index = false; |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2423 lexer_flags.at_beginning_of_statement = false; |
972 | 2424 |
2425 yylval.tok_val = new token (value, yytext, input_line_number, | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2426 current_input_column); |
972 | 2427 |
2428 token_stack.push (yylval.tok_val); | |
2429 | |
2430 current_input_column += yyleng; | |
2431 | |
2432 do_comma_insert_check (); | |
2433 } | |
2434 | |
1001 | 2435 // We have seen a backslash and need to find out if it should be |
2436 // treated as a continuation character. If so, this eats it, up to | |
2437 // and including the new line character. | |
2438 // | |
973 | 2439 // Match whitespace only, followed by a comment character or newline. |
2440 // Once a comment character is found, discard all input until newline. | |
2441 // If non-whitespace characters are found before comment | |
2442 // characters, return 0. Otherwise, return 1. | |
2443 | |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
2444 // FIXME -- we need to handle block comments here. |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
2445 |
2857 | 2446 static bool |
3096 | 2447 have_continuation (bool trailing_comments_ok) |
973 | 2448 { |
5765 | 2449 std::ostringstream buf; |
973 | 2450 |
3665 | 2451 std::string comment_buf; |
2452 | |
2857 | 2453 bool in_comment = false; |
3665 | 2454 bool beginning_of_comment = false; |
2455 | |
2456 int c = 0; | |
2457 | |
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
|
2458 while ((c = text_yyinput ()) != EOF) |
973 | 2459 { |
3802 | 2460 buf << static_cast<char> (c); |
973 | 2461 |
2462 switch (c) | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2463 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2464 case ' ': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2465 case '\t': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2466 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2467 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2468 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2469 beginning_of_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2470 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2471 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2472 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2473 case '%': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2474 case '#': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2475 if (trailing_comments_ok) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2476 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2477 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2478 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2479 if (! beginning_of_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2480 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2481 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2482 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2483 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2484 maybe_gripe_matlab_incompatible_comment (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2485 in_comment = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2486 beginning_of_comment = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2487 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2488 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2489 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2490 goto cleanup; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2491 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2492 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2493 case '\n': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2494 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2495 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2496 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2497 octave_comment_buffer::append (comment_buf); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2498 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2499 current_input_column = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2500 promptflag--; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2501 gripe_matlab_incompatible_continuation (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2502 return true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2503 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2504 default: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2505 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2506 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2507 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2508 beginning_of_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2509 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2510 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2511 goto cleanup; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2512 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2513 } |
973 | 2514 } |
2515 | |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2516 xunput (c, yytext); |
2857 | 2517 return false; |
973 | 2518 |
3096 | 2519 cleanup: |
4051 | 2520 |
5765 | 2521 std::string s = buf.str (); |
4051 | 2522 |
2523 int len = s.length (); | |
2524 while (len--) | |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2525 xunput (s[len], yytext); |
3096 | 2526 |
2857 | 2527 return false; |
973 | 2528 } |
2529 | |
1001 | 2530 // We have seen a `.' and need to see if it is the start of a |
2531 // continuation. If so, this eats it, up to and including the new | |
2532 // line character. | |
2533 | |
2857 | 2534 static bool |
3096 | 2535 have_ellipsis_continuation (bool trailing_comments_ok) |
973 | 2536 { |
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
|
2537 char c1 = text_yyinput (); |
973 | 2538 if (c1 == '.') |
2539 { | |
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
|
2540 char c2 = text_yyinput (); |
1091 | 2541 if (c2 == '.' && have_continuation (trailing_comments_ok)) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2542 return true; |
973 | 2543 else |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2544 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2545 xunput (c2, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2546 xunput (c1, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2547 } |
973 | 2548 } |
2549 else | |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2550 xunput (c1, yytext); |
973 | 2551 |
2857 | 2552 return false; |
973 | 2553 } |
2554 | |
1001 | 2555 // See if we have a continuation line. If so, eat it and the leading |
2556 // whitespace on the next line. | |
1088 | 2557 // |
2558 // Return value is the same as described for eat_whitespace(). | |
1001 | 2559 |
1826 | 2560 static yum_yum |
1001 | 2561 eat_continuation (void) |
2562 { | |
1826 | 2563 int retval = ATE_NOTHING; |
3665 | 2564 |
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
|
2565 int c = text_yyinput (); |
3665 | 2566 |
1001 | 2567 if ((c == '.' && have_ellipsis_continuation ()) |
3105 | 2568 || (c == '\\' && have_continuation ())) |
1001 | 2569 retval = eat_whitespace (); |
2570 else | |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2571 xunput (c, yytext); |
1001 | 2572 |
2573 return retval; | |
2574 } | |
2575 | |
973 | 2576 static int |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2577 handle_string (char delim) |
973 | 2578 { |
5765 | 2579 std::ostringstream buf; |
973 | 2580 |
3805 | 2581 int bos_line = input_line_number; |
2582 int bos_col = current_input_column; | |
2583 | |
973 | 2584 int c; |
1031 | 2585 int escape_pending = 0; |
973 | 2586 |
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
|
2587 while ((c = text_yyinput ()) != EOF) |
973 | 2588 { |
2589 current_input_column++; | |
2590 | |
3105 | 2591 if (c == '\\') |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2592 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2593 if (delim == '\'' || escape_pending) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2594 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2595 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2596 escape_pending = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2597 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2598 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2599 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2600 if (have_continuation (false)) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2601 escape_pending = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2602 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2603 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2604 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2605 escape_pending = 1; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2606 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2607 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2608 continue; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2609 } |
973 | 2610 else if (c == '.') |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2611 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2612 if (delim == '\'' || ! have_ellipsis_continuation (false)) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2613 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2614 } |
973 | 2615 else if (c == '\n') |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2616 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2617 error ("unterminated string constant"); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2618 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2619 } |
973 | 2620 else if (c == delim) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2621 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2622 if (escape_pending) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2623 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2624 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2625 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2626 c = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2627 if (c == delim) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2628 { |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2629 buf << static_cast<char> (c); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2630 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2631 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2632 { |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2633 std::string s; |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2634 xunput (c, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2635 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2636 if (delim == '\'') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2637 s = buf.str (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2638 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2639 s = do_string_escapes (buf.str ()); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2640 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2641 lexer_flags.quote_is_transpose = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2642 lexer_flags.convert_spaces_to_comma = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2643 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2644 yylval.tok_val = new token (s, bos_line, bos_col); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2645 token_stack.push (yylval.tok_val); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2646 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2647 if (delim == '"') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2648 gripe_matlab_incompatible ("\" used as string delimiter"); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2649 else if (delim == '\'') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2650 gripe_single_quote_string (); |
3400 | 2651 |
8745
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
2652 lexer_flags.looking_for_object_index = true; |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2653 lexer_flags.at_beginning_of_statement = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2654 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2655 return delim == '"' ? DQ_STRING : SQ_STRING; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2656 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2657 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2658 } |
973 | 2659 else |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2660 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2661 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2662 } |
973 | 2663 |
1031 | 2664 escape_pending = 0; |
973 | 2665 } |
2666 | |
2667 return LEXICAL_ERROR; | |
2668 } | |
2669 | |
3208 | 2670 static bool |
2671 next_token_is_assign_op (void) | |
2672 { | |
2673 bool retval = false; | |
2674 | |
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
|
2675 int c0 = text_yyinput (); |
3208 | 2676 |
2677 switch (c0) | |
2678 { | |
2679 case '=': | |
2680 { | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2681 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2682 xunput (c1, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2683 if (c1 != '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2684 retval = true; |
3208 | 2685 } |
2686 break; | |
2687 | |
2688 case '+': | |
2689 case '-': | |
2690 case '*': | |
2691 case '/': | |
2692 case '\\': | |
2693 case '&': | |
2694 case '|': | |
2695 { | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2696 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2697 xunput (c1, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2698 if (c1 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2699 retval = true; |
3208 | 2700 } |
2701 break; | |
2702 | |
2703 case '.': | |
2704 { | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2705 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2706 if (match_any (c1, "+-*/\\")) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2707 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2708 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2709 xunput (c2, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2710 if (c2 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2711 retval = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2712 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2713 xunput (c1, yytext); |
3208 | 2714 } |
2715 break; | |
2716 | |
2717 case '>': | |
2718 { | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2719 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2720 if (c1 == '>') |
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>
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diff
changeset
|
2722 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2723 xunput (c2, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2724 if (c2 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2725 retval = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2726 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2727 xunput (c1, yytext); |
3208 | 2728 } |
2729 break; | |
2730 | |
2731 case '<': | |
2732 { | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2733 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2734 if (c1 == '<') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2735 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2736 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2737 xunput (c2, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2738 if (c2 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2739 retval = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2740 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2741 xunput (c1, yytext); |
3208 | 2742 } |
2743 break; | |
2744 | |
2745 default: | |
2746 break; | |
2747 } | |
2748 | |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2749 xunput (c0, yytext); |
3208 | 2750 |
2751 return retval; | |
2752 } | |
2753 | |
4633 | 2754 static bool |
2755 next_token_is_index_op (void) | |
2756 { | |
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
|
2757 int c = text_yyinput (); |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2758 xunput (c, yytext); |
4633 | 2759 return c == '(' || c == '{'; |
2760 } | |
2761 | |
4612 | 2762 static int |
2763 handle_close_bracket (bool spc_gobbled, int bracket_type) | |
971 | 2764 { |
4612 | 2765 int retval = bracket_type; |
3208 | 2766 |
1826 | 2767 if (! nesting_level.none ()) |
971 | 2768 { |
1826 | 2769 nesting_level.remove (); |
4613 | 2770 |
2771 if (bracket_type == ']') | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2772 lexer_flags.bracketflag--; |
4613 | 2773 else if (bracket_type == '}') |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2774 lexer_flags.braceflag--; |
4613 | 2775 else |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2776 panic_impossible (); |
971 | 2777 } |
2778 | |
4613 | 2779 if (lexer_flags.bracketflag == 0 && lexer_flags.braceflag == 0) |
4323 | 2780 BEGIN (INITIAL); |
1001 | 2781 |
4608 | 2782 if (bracket_type == ']' |
2783 && next_token_is_assign_op () | |
2784 && ! lexer_flags.looking_at_return_list) | |
971 | 2785 { |
3208 | 2786 retval = CLOSE_BRACE; |
971 | 2787 } |
4613 | 2788 else if ((lexer_flags.bracketflag || lexer_flags.braceflag) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2789 && lexer_flags.convert_spaces_to_comma |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2790 && (nesting_level.is_bracket () |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2791 || (nesting_level.is_brace () |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2792 && ! lexer_flags.looking_at_object_index.front ()))) |
971 | 2793 { |
4633 | 2794 bool index_op = next_token_is_index_op (); |
2795 | |
2796 // Don't insert comma if we are looking at something like | |
2797 // | |
2798 // [x{i}{j}] or [x{i}(j)] | |
2799 // | |
2800 // but do if we are looking at | |
2801 // | |
2802 // [x{i} {j}] or [x{i} (j)] | |
2803 | |
2804 if (spc_gobbled || ! (bracket_type == '}' && index_op)) | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2805 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2806 bool bin_op = next_token_is_bin_op (spc_gobbled); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2807 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2808 bool postfix_un_op = next_token_is_postfix_unary_op (spc_gobbled); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2809 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2810 bool sep_op = next_token_is_sep_op (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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10182
diff
changeset
|
2811 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2812 if (! (postfix_un_op || bin_op || sep_op)) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2813 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2814 maybe_warn_separator_insert (','); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2815 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2816 xunput (',', yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2817 return retval; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2818 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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10182
diff
changeset
|
2819 } |
971 | 2820 } |
2821 | |
2857 | 2822 lexer_flags.quote_is_transpose = true; |
2823 lexer_flags.convert_spaces_to_comma = true; | |
3208 | 2824 |
2825 return retval; | |
971 | 2826 } |
2827 | |
1072 | 2828 static void |
2829 maybe_unput_comma (int spc_gobbled) | |
2830 { | |
4613 | 2831 if (nesting_level.is_bracket () |
2832 || (nesting_level.is_brace () | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2833 && ! lexer_flags.looking_at_object_index.front ())) |
1072 | 2834 { |
3246 | 2835 int bin_op = next_token_is_bin_op (spc_gobbled); |
1072 | 2836 |
3246 | 2837 int postfix_un_op = next_token_is_postfix_unary_op (spc_gobbled); |
1072 | 2838 |
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
|
2839 int c1 = text_yyinput (); |
13820b9f5fd9
more consistent handling of CR/CRLF/LF line endings in lexer and parser
John W. Eaton <jwe@octave.org>
parents:
7723
diff
changeset
|
2840 int c2 = text_yyinput (); |
2970 | 2841 |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2842 xunput (c2, yytext); |
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2843 xunput (c1, yytext); |
2970 | 2844 |
3263 | 2845 int sep_op = next_token_is_sep_op (); |
2970 | 2846 |
1072 | 2847 int dot_op = (c1 == '.' |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2848 && (isalpha (c2) || isspace (c2) || c2 == '_')); |
2970 | 2849 |
3388 | 2850 if (postfix_un_op || bin_op || sep_op || dot_op) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2851 return; |
3388 | 2852 |
3985 | 2853 int index_op = (c1 == '(' || c1 == '{'); |
3388 | 2854 |
4476 | 2855 // If there is no space before the indexing op, we don't insert |
2856 // a comma. | |
2857 | |
2858 if (index_op && ! spc_gobbled) | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2859 return; |
4476 | 2860 |
2861 maybe_warn_separator_insert (','); | |
2862 | |
8745
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
2863 xunput (',', yytext); |
1072 | 2864 } |
2865 } | |
2866 | |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2867 static bool |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2868 next_token_can_follow_bin_op (void) |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2869 { |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2870 std::stack<char> buf; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2871 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2872 int c = EOF; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2873 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2874 // Skip whitespace in current statement on current line |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2875 while (true) |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2876 { |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2877 c = text_yyinput (); |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2878 |
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
|
2879 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
|
2880 |
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
|
2881 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
|
2882 break; |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2883 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2884 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2885 // Restore input. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2886 while (! buf.empty ()) |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2887 { |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2888 xunput (buf.top (), yytext); |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2889 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2890 buf.pop (); |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2891 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
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8745
diff
changeset
|
2892 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
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8745
diff
changeset
|
2893 return (isalnum (c) || match_any (c, "!\"'(-[_{~")); |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2894 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2895 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2896 static bool |
10052
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
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10048
diff
changeset
|
2897 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
|
2898 { |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
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10048
diff
changeset
|
2899 // 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
|
2900 // 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>
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diff
changeset
|
2901 |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
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diff
changeset
|
2902 return ! (tok == "e" |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
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10048
diff
changeset
|
2903 || tok == "I" || tok == "i" |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
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10048
diff
changeset
|
2904 || tok == "J" || tok == "j" |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2905 || tok == "Inf" || tok == "inf" |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
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10048
diff
changeset
|
2906 || tok == "NaN" || tok == "nan"); |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
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10048
diff
changeset
|
2907 } |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
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10048
diff
changeset
|
2908 |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
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10048
diff
changeset
|
2909 static bool |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2910 looks_like_command_arg (void) |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
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8745
diff
changeset
|
2911 { |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
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8745
diff
changeset
|
2912 bool retval = true; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2913 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
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8745
diff
changeset
|
2914 int c0 = text_yyinput (); |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2915 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2916 switch (c0) |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2917 { |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2918 // = == |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2919 case '=': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2920 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2921 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2922 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2923 if (c1 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2924 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2925 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2926 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2927 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2928 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2929 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2930 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2931 xunput (c2, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2932 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2933 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2934 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2935 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2936 xunput (c1, yytext); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2937 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2938 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2939 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2940 case '(': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2941 case '{': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2942 // Indexing. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2943 retval = false; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2944 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2945 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2946 case '\n': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2947 // EOL. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2948 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2949 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2950 case '\'': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2951 case '"': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2952 // Beginning of a character string. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2953 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2954 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2955 // + - ++ -- += -= |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2956 case '+': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2957 case '-': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2958 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2959 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2960 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2961 switch (c1) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2962 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2963 case '\n': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2964 // EOL. |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2965 case '+': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2966 case '-': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2967 // Unary ops, spacing doesn't matter. |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2968 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2969 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2970 case '\t': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2971 case ' ': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2972 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2973 if (next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2974 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2975 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2976 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2977 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2978 case '=': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2979 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2980 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2981 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2982 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2983 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2984 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2985 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2986 xunput (c2, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2987 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2988 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2989 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2990 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2991 xunput (c1, yytext); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2992 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2993 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2994 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2995 case ':': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2996 case '/': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2997 case '\\': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2998 case '^': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2999 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3000 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3001 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3002 if (! match_any (c1, ",;\n") && (c1 == ' ' || c1 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3003 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3004 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3005 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3006 xunput (c1, yytext); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3007 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3008 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3009 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3010 // .+ .- ./ .\ .^ .* .** |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3011 case '.': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3012 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3013 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3014 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3015 if (match_any (c1, "+-/\\^*")) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3016 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3017 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3018 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3019 if (c2 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3020 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3021 int c3 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3022 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3023 if (! match_any (c3, ",;\n") && (c3 == ' ' || c3 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3024 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3025 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3026 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3027 xunput (c3, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3028 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3029 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
|
3030 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3031 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3032 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3033 xunput (c2, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3034 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3035 else if (! match_any (c1, ",;\n") |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3036 && (! isdigit (c1) && c1 != ' ' && c1 != '\t' |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3037 && c1 != '.')) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3038 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3039 // Structure reference. FIXME -- is this a complete check? |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3040 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3041 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3042 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3043 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3044 xunput (c1, yytext); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3045 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3046 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3047 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3048 // & && | || * ** |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3049 case '&': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3050 case '|': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3051 case '*': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3052 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3053 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3054 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3055 if (c1 == c0) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3056 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3057 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3058 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3059 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3060 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3061 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3062 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3063 xunput (c2, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3064 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3065 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
|
3066 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3067 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3068 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3069 xunput (c1, yytext); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3070 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3071 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3072 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3073 // < <= > >= |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3074 case '<': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3075 case '>': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3076 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3077 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3078 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3079 if (c1 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3080 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3081 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3082 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3083 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3084 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3085 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3086 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3087 xunput (c2, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3088 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3089 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
|
3090 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3091 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3092 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3093 xunput (c1, yytext); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3094 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3095 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3096 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3097 // ~= != |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3098 case '~': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3099 case '!': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3100 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3101 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3102 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3103 // ~ and ! can be unary ops, so require following =. |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3104 if (c1 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3105 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3106 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3107 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3108 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3109 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3110 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3111 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3112 xunput (c2, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3113 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3114 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
|
3115 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3116 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3117 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3118 xunput (c1, yytext); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3119 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3120 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3121 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3122 default: |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3123 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3124 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3125 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3126 xunput (c0, yytext); |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3127 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3128 return retval; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3129 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3130 |
9476 | 3131 static int |
3132 handle_superclass_identifier (void) | |
3133 { | |
3134 eat_continuation (); | |
3135 | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3136 std::string pkg; |
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3137 std::string meth = strip_trailing_whitespace (yytext); |
9476 | 3138 size_t pos = meth.find ("@"); |
3139 std::string cls = meth.substr (pos).substr (1); | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3140 meth = meth.substr (0, pos - 1); |
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3141 |
9476 | 3142 pos = cls.find ("."); |
3143 if (pos != std::string::npos) | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3144 { |
9476 | 3145 pkg = cls.substr (pos).substr (1); |
3146 cls = cls.substr (0, pos - 1); | |
3147 } | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3148 |
9476 | 3149 int kw_token = (is_keyword_token (meth) || is_keyword_token (cls) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3150 || is_keyword_token (pkg)); |
9476 | 3151 if (kw_token) |
3152 { | |
3153 error ("method, class and package names may not be keywords"); | |
3154 return LEXICAL_ERROR; | |
3155 } | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3156 |
9476 | 3157 yylval.tok_val |
3158 = new token (meth.empty () ? 0 : &(symbol_table::insert (meth)), | |
3159 cls.empty () ? 0 : &(symbol_table::insert (cls)), | |
3160 pkg.empty () ? 0 : &(symbol_table::insert (pkg)), | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3161 input_line_number, current_input_column); |
9476 | 3162 token_stack.push (yylval.tok_val); |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3163 |
9476 | 3164 lexer_flags.convert_spaces_to_comma = true; |
3165 current_input_column += yyleng; | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3166 |
9476 | 3167 return SUPERCLASSREF; |
3168 } | |
3169 | |
3170 static int | |
3171 handle_meta_identifier (void) | |
3172 { | |
3173 eat_continuation (); | |
3174 | |
3175 std::string pkg; | |
3176 std::string cls = strip_trailing_whitespace (yytext).substr (1); | |
3177 size_t pos = cls.find ("."); | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3178 |
9476 | 3179 if (pos != std::string::npos) |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3180 { |
9476 | 3181 pkg = cls.substr (pos).substr (1); |
3182 cls = cls.substr (0, pos - 1); | |
3183 } | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3184 |
9476 | 3185 int kw_token = is_keyword_token (cls) || is_keyword_token (pkg); |
3186 if (kw_token) | |
3187 { | |
3188 error ("class and package names may not be keywords"); | |
3189 return LEXICAL_ERROR; | |
3190 } | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3191 |
9476 | 3192 yylval.tok_val |
3193 = new token (cls.empty () ? 0 : &(symbol_table::insert (cls)), | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3194 pkg.empty () ? 0 : &(symbol_table::insert (pkg)), |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3195 input_line_number, current_input_column); |
9476 | 3196 |
3197 token_stack.push (yylval.tok_val); | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3198 |
9476 | 3199 lexer_flags.convert_spaces_to_comma = true; |
3200 current_input_column += yyleng; | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3201 |
9476 | 3202 return METAQUERY; |
3203 } | |
3204 | |
767 | 3205 // Figure out exactly what kind of token to return when we have seen |
4238 | 3206 // an identifier. Handles keywords. Return -1 if the identifier |
3207 // should be ignored. | |
767 | 3208 |
146 | 3209 static int |
3974 | 3210 handle_identifier (void) |
146 | 3211 { |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3212 bool at_bos = lexer_flags.at_beginning_of_statement; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3213 |
3974 | 3214 std::string tok = strip_trailing_whitespace (yytext); |
3215 | |
3216 int c = yytext[yyleng-1]; | |
3217 | |
3218 int cont_is_spc = eat_continuation (); | |
3219 | |
3220 int spc_gobbled = (cont_is_spc || c == ' ' || c == '\t'); | |
3221 | |
2970 | 3222 // If we are expecting a structure element, avoid recognizing |
3223 // keywords and other special names and return STRUCT_ELT, which is | |
3224 // a string that is also a valid identifier. But first, we have to | |
3225 // decide whether to insert a comma. | |
747 | 3226 |
1826 | 3227 if (lexer_flags.looking_at_indirect_ref) |
1072 | 3228 { |
2970 | 3229 do_comma_insert_check (); |
3230 | |
1072 | 3231 maybe_unput_comma (spc_gobbled); |
2819 | 3232 |
3233 yylval.tok_val = new token (tok, input_line_number, | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3234 current_input_column); |
2819 | 3235 |
3236 token_stack.push (yylval.tok_val); | |
3237 | |
2857 | 3238 lexer_flags.quote_is_transpose = true; |
3239 lexer_flags.convert_spaces_to_comma = true; | |
9324
29563379fa9b
don't look for object index after keyword
John W. Eaton <jwe@octave.org>
parents:
8974
diff
changeset
|
3240 lexer_flags.looking_for_object_index = true; |
2819 | 3241 |
3242 current_input_column += yyleng; | |
3243 | |
2970 | 3244 return STRUCT_ELT; |
1072 | 3245 } |
747 | 3246 |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3247 lexer_flags.at_beginning_of_statement = false; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3248 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3249 // The is_keyword_token may reset |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3250 // lexer_flags.at_beginning_of_statement. For example, if it sees |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3251 // an else token, then the next token is at the beginning of a |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3252 // statement. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3253 |
4930 | 3254 int kw_token = is_keyword_token (tok); |
3255 | |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3256 // If we found a keyword token, then the beginning_of_statement flag |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3257 // is already set. Otherwise, we won't be at the beginning of a |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3258 // statement. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3259 |
4930 | 3260 if (lexer_flags.looking_at_function_handle) |
3261 { | |
3262 if (kw_token) | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3263 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3264 error ("function handles may not refer to keywords"); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3265 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3266 return LEXICAL_ERROR; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3267 } |
4930 | 3268 else |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3269 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3270 yylval.tok_val = new token (tok, input_line_number, |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3271 current_input_column); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3272 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3273 token_stack.push (yylval.tok_val); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3274 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3275 current_input_column += yyleng; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3276 lexer_flags.quote_is_transpose = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3277 lexer_flags.convert_spaces_to_comma = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3278 lexer_flags.looking_for_object_index = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3279 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3280 return FCN_HANDLE; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3281 } |
4930 | 3282 } |
3283 | |
5102 | 3284 // If we have a regular keyword, return it. |
7722
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3285 // Keywords can be followed by identifiers. |
146 | 3286 |
3287 if (kw_token) | |
3288 { | |
7722
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3289 if (kw_token >= 0) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3290 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3291 current_input_column += yyleng; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3292 lexer_flags.quote_is_transpose = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3293 lexer_flags.convert_spaces_to_comma = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3294 lexer_flags.looking_for_object_index = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3295 } |
7722
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3296 |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3297 return kw_token; |
146 | 3298 } |
3299 | |
1826 | 3300 // See if we have a plot keyword (title, using, with, or clear). |
146 | 3301 |
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
|
3302 int c1 = text_yyinput (); |
3480 | 3303 |
3304 bool next_tok_is_eq = false; | |
3305 if (c1 == '=') | |
3306 { | |
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
|
3307 int c2 = text_yyinput (); |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
3308 xunput (c2, yytext); |
3480 | 3309 |
3310 if (c2 != '=') | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3311 next_tok_is_eq = true; |
3480 | 3312 } |
3313 | |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
3314 xunput (c1, yytext); |
1001 | 3315 |
2702 | 3316 // Kluge alert. |
3317 // | |
3318 // If we are looking at a text style function, set up to gobble its | |
2745 | 3319 // arguments. |
3320 // | |
3321 // If the following token is `=', or if we are parsing a function | |
3189 | 3322 // return list or function parameter list, or if we are looking at |
3323 // something like [ab,cd] = foo (), force the symbol to be inserted | |
3324 // as a variable in the current symbol table. | |
2702 | 3325 |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3326 if (! is_variable (tok)) |
2702 | 3327 { |
10052
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
3328 if (at_bos && spc_gobbled && can_be_command (tok) |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
3329 && looks_like_command_arg ()) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3330 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3331 BEGIN (COMMAND_START); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3332 } |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3333 else if (next_tok_is_eq |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3334 || lexer_flags.looking_at_decl_list |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3335 || lexer_flags.looking_at_return_list |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3336 || (lexer_flags.looking_at_parameter_list |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3337 && ! lexer_flags.looking_at_initializer_expression)) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3338 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3339 symbol_table::force_variable (tok); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3340 } |
8001
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7898
diff
changeset
|
3341 else if (lexer_flags.looking_at_matrix_or_assign_lhs) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3342 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3343 lexer_flags.pending_local_variables.insert (tok); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3344 } |
2702 | 3345 } |
3346 | |
4234 | 3347 // Find the token in the symbol table. Beware the magic |
3348 // transformation of the end keyword... | |
3349 | |
3350 if (tok == "end") | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3351 tok = "__end__"; |
146 | 3352 |
7336 | 3353 yylval.tok_val = new token (&(symbol_table::insert (tok)), |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3354 input_line_number, current_input_column); |
7336 | 3355 |
146 | 3356 token_stack.push (yylval.tok_val); |
3357 | |
1826 | 3358 // After seeing an identifer, it is ok to convert spaces to a comma |
3359 // (if needed). | |
146 | 3360 |
2857 | 3361 lexer_flags.convert_spaces_to_comma = true; |
146 | 3362 |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3363 if (! (next_tok_is_eq || YY_START == COMMAND_START)) |
2877 | 3364 { |
3365 lexer_flags.quote_is_transpose = true; | |
146 | 3366 |
2877 | 3367 do_comma_insert_check (); |
3368 | |
3369 maybe_unput_comma (spc_gobbled); | |
146 | 3370 } |
3371 | |
2877 | 3372 current_input_column += yyleng; |
146 | 3373 |
9324
29563379fa9b
don't look for object index after keyword
John W. Eaton <jwe@octave.org>
parents:
8974
diff
changeset
|
3374 if (tok != "__end__") |
29563379fa9b
don't look for object index after keyword
John W. Eaton <jwe@octave.org>
parents:
8974
diff
changeset
|
3375 lexer_flags.looking_for_object_index = true; |
29563379fa9b
don't look for object index after keyword
John W. Eaton <jwe@octave.org>
parents:
8974
diff
changeset
|
3376 |
146 | 3377 return NAME; |
3378 } | |
3379 | |
1826 | 3380 void |
3381 lexical_feedback::init (void) | |
3382 { | |
3383 // Not initially defining a matrix list. | |
3351 | 3384 bracketflag = 0; |
1826 | 3385 |
4613 | 3386 // Not initially defining a cell array list. |
3387 braceflag = 0; | |
3388 | |
1826 | 3389 // Not initially inside a loop or if statement. |
3390 looping = 0; | |
3391 | |
2857 | 3392 // Not initially defining a function. |
11367
b2191ebea12f
don't process input_event_hook when we are parsing a function
John W. Eaton <jwe@octave.org>
parents:
11217
diff
changeset
|
3393 defining_func = 0; |
11464
21b5284fa78d
avoid error when parsing nested functions
John W. Eaton <jwe@octave.org>
parents:
11431
diff
changeset
|
3394 |
21b5284fa78d
avoid error when parsing nested functions
John W. Eaton <jwe@octave.org>
parents:
11431
diff
changeset
|
3395 // Not parsing an object index. |
21b5284fa78d
avoid error when parsing nested functions
John W. Eaton <jwe@octave.org>
parents:
11431
diff
changeset
|
3396 while (! parsed_function_name.empty ()) |
21b5284fa78d
avoid error when parsing nested functions
John W. Eaton <jwe@octave.org>
parents:
11431
diff
changeset
|
3397 parsed_function_name.pop (); |
21b5284fa78d
avoid error when parsing nested functions
John W. Eaton <jwe@octave.org>
parents:
11431
diff
changeset
|
3398 |
7336 | 3399 parsing_class_method = false; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3400 |
9476 | 3401 // Not initially defining a class with classdef. |
3402 maybe_classdef_get_set_method = false; | |
3403 parsing_classdef = false; | |
2857 | 3404 |
4930 | 3405 // Not initiallly looking at a function handle. |
3406 looking_at_function_handle = 0; | |
3407 | |
13237
1bfca2bbea8b
fix parsing of anonymous functions inside cell array lists.
John W. Eaton <jwe@octave.org>
parents:
12801
diff
changeset
|
3408 // Not initiallly looking at an anonymous function argument list. |
1bfca2bbea8b
fix parsing of anonymous functions inside cell array lists.
John W. Eaton <jwe@octave.org>
parents:
12801
diff
changeset
|
3409 looking_at_anon_fcn_args = 0; |
1bfca2bbea8b
fix parsing of anonymous functions inside cell array lists.
John W. Eaton <jwe@octave.org>
parents:
12801
diff
changeset
|
3410 |
8701
1652e39b934e
handle command names in declaration lists
John W. Eaton <jwe@octave.org>
parents:
8537
diff
changeset
|
3411 // Not parsing a function return, parameter, or declaration list. |
2857 | 3412 looking_at_return_list = false; |
3413 looking_at_parameter_list = false; | |
8701
1652e39b934e
handle command names in declaration lists
John W. Eaton <jwe@octave.org>
parents:
8537
diff
changeset
|
3414 looking_at_decl_list = false; |
2857 | 3415 |
7634
ae90e05ad299
fix parameter list initializer bug
John W. Eaton <jwe@octave.org>
parents:
7587
diff
changeset
|
3416 // Not looking at an argument list initializer expression. |
ae90e05ad299
fix parameter list initializer bug
John W. Eaton <jwe@octave.org>
parents:
7587
diff
changeset
|
3417 looking_at_initializer_expression = false; |
ae90e05ad299
fix parameter list initializer bug
John W. Eaton <jwe@octave.org>
parents:
7587
diff
changeset
|
3418 |
3796 | 3419 // Not parsing a matrix or the left hand side of multi-value |
3420 // assignment statement. | |
3421 looking_at_matrix_or_assign_lhs = false; | |
3422 | |
4234 | 3423 // Not parsing an object index. |
8745
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
3424 while (! looking_at_object_index.empty ()) |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
3425 looking_at_object_index.pop_front (); |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
3426 |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
3427 looking_at_object_index.push_front (false); |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
3428 |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
3429 // Object index not possible until we've seen something. |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
3430 looking_for_object_index = false; |
4234 | 3431 |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3432 // Yes, we are at the beginning of a statement. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3433 at_beginning_of_statement = true; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3434 |
2857 | 3435 // No need to do comma insert or convert spaces to comma at |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3436 // beginning of input. |
2857 | 3437 convert_spaces_to_comma = true; |
3438 do_comma_insert = false; | |
3439 | |
1826 | 3440 // Not initially looking at indirect references. |
2857 | 3441 looking_at_indirect_ref = false; |
1826 | 3442 |
3443 // Quote marks strings intially. | |
2857 | 3444 quote_is_transpose = false; |
8001
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7898
diff
changeset
|
3445 |
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7898
diff
changeset
|
3446 // Set of identifiers that might be local variable names is empty. |
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7898
diff
changeset
|
3447 pending_local_variables.clear (); |
1826 | 3448 } |
3449 | |
4867 | 3450 bool |
3451 is_keyword (const std::string& s) | |
3452 { | |
5088 | 3453 return octave_kw_hash::in_word_set (s.c_str (), s.length ()) != 0; |
4867 | 3454 } |
3455 | |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3456 DEFUN (iskeyword, args, , |
4264 | 3457 "-*- texinfo -*-\n\ |
11431
0d9640d755b1
Improve docstrings for all isXXX functions.
Rik <octave@nomad.inbox5.com>
parents:
11367
diff
changeset
|
3458 @deftypefn {Built-in Function} {} iskeyword ()\n\ |
0d9640d755b1
Improve docstrings for all isXXX functions.
Rik <octave@nomad.inbox5.com>
parents:
11367
diff
changeset
|
3459 @deftypefnx {Built-in Function} {} iskeyword (@var{name})\n\ |
4264 | 3460 Return true if @var{name} is an Octave keyword. If @var{name}\n\ |
3461 is omitted, return a list of keywords.\n\ | |
11431
0d9640d755b1
Improve docstrings for all isXXX functions.
Rik <octave@nomad.inbox5.com>
parents:
11367
diff
changeset
|
3462 @seealso{isvarname, exist}\n\ |
4264 | 3463 @end deftypefn") |
3464 { | |
3465 octave_value retval; | |
3466 | |
3467 int argc = args.length () + 1; | |
3468 | |
4867 | 3469 string_vector argv = args.make_argv ("iskeyword"); |
4264 | 3470 |
3471 if (error_state) | |
3472 return retval; | |
3473 | |
3474 if (argc == 1) | |
3475 { | |
3476 string_vector lst (TOTAL_KEYWORDS); | |
3477 | |
3478 for (int i = 0; i < TOTAL_KEYWORDS; i++) | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3479 lst[i] = wordlist[i].name; |
4264 | 3480 |
8504
0e0bd07e6ae2
omission from last patch
Jaroslav Hajek <highegg@gmail.com>
parents:
8447
diff
changeset
|
3481 retval = Cell (lst.sort ()); |
4264 | 3482 } |
3483 else if (argc == 2) | |
3484 { | |
4867 | 3485 retval = is_keyword (argv[1]); |
4264 | 3486 } |
3487 else | |
5823 | 3488 print_usage (); |
4264 | 3489 |
3490 return retval; | |
3491 } | |
3492 | |
12801
2837514cf178
codesprint: Add tests for iskeyword() to lex.ll
Rik <octave@nomad.inbox5.com>
parents:
12627
diff
changeset
|
3493 /* |
2837514cf178
codesprint: Add tests for iskeyword() to lex.ll
Rik <octave@nomad.inbox5.com>
parents:
12627
diff
changeset
|
3494 |
2837514cf178
codesprint: Add tests for iskeyword() to lex.ll
Rik <octave@nomad.inbox5.com>
parents:
12627
diff
changeset
|
3495 %!assert (iskeyword ("for")) |
2837514cf178
codesprint: Add tests for iskeyword() to lex.ll
Rik <octave@nomad.inbox5.com>
parents:
12627
diff
changeset
|
3496 %!assert (iskeyword ("fort"), false) |
2837514cf178
codesprint: Add tests for iskeyword() to lex.ll
Rik <octave@nomad.inbox5.com>
parents:
12627
diff
changeset
|
3497 %!assert (iskeyword ("fft"), false) |
2837514cf178
codesprint: Add tests for iskeyword() to lex.ll
Rik <octave@nomad.inbox5.com>
parents:
12627
diff
changeset
|
3498 |
2837514cf178
codesprint: Add tests for iskeyword() to lex.ll
Rik <octave@nomad.inbox5.com>
parents:
12627
diff
changeset
|
3499 */ |
2837514cf178
codesprint: Add tests for iskeyword() to lex.ll
Rik <octave@nomad.inbox5.com>
parents:
12627
diff
changeset
|
3500 |
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
3501 void |
9474
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3502 prep_lexer_for_script_file (void) |
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
3503 { |
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
3504 BEGIN (SCRIPT_FILE_BEGIN); |
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
3505 } |
4264 | 3506 |
9474
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3507 void |
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3508 prep_lexer_for_function_file (void) |
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3509 { |
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3510 BEGIN (FUNCTION_FILE_BEGIN); |
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3511 } |
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3512 |
3388 | 3513 static void |
3514 maybe_warn_separator_insert (char sep) | |
3515 { | |
3523 | 3516 std::string nm = curr_fcn_file_full_name; |
3388 | 3517 |
5794 | 3518 if (nm.empty ()) |
3519 warning_with_id ("Octave:separator-insert", | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3520 "potential auto-insertion of `%c' near line %d", |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3521 sep, input_line_number); |
5794 | 3522 else |
3523 warning_with_id ("Octave:separator-insert", | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3524 "potential auto-insertion of `%c' near line %d of file %s", |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3525 sep, input_line_number, nm.c_str ()); |
3388 | 3526 } |
3527 | |
3400 | 3528 static void |
3529 gripe_single_quote_string (void) | |
3530 { | |
3523 | 3531 std::string nm = curr_fcn_file_full_name; |
3400 | 3532 |
5794 | 3533 if (nm.empty ()) |
3534 warning_with_id ("Octave:single-quote-string", | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3535 "single quote delimited string near line %d", |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3536 input_line_number); |
5794 | 3537 else |
3538 warning_with_id ("Octave:single-quote-string", | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3539 "single quote delimited string near line %d of file %s", |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3540 input_line_number, nm.c_str ()); |
3400 | 3541 } |
3542 | |
4037 | 3543 static void |
3544 gripe_matlab_incompatible (const std::string& msg) | |
3545 { | |
8974
fde2a916b2ac
include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents:
8950
diff
changeset
|
3546 std::string nm = curr_fcn_file_full_name; |
fde2a916b2ac
include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents:
8950
diff
changeset
|
3547 |
fde2a916b2ac
include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents:
8950
diff
changeset
|
3548 if (nm.empty ()) |
fde2a916b2ac
include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents:
8950
diff
changeset
|
3549 warning_with_id ("Octave:matlab-incompatible", |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3550 "potential Matlab compatibility problem: %s", |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3551 msg.c_str ()); |
8974
fde2a916b2ac
include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents:
8950
diff
changeset
|
3552 else |
fde2a916b2ac
include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents:
8950
diff
changeset
|
3553 warning_with_id ("Octave:matlab-incompatible", |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3554 "potential Matlab compatibility problem: %s near line %d offile %s", |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3555 msg.c_str (), input_line_number, nm.c_str ()); |
4037 | 3556 } |
3557 | |
3558 static void | |
3559 maybe_gripe_matlab_incompatible_comment (char c) | |
3560 { | |
3561 if (c == '#') | |
3562 gripe_matlab_incompatible ("# used as comment character"); | |
3563 } | |
3564 | |
3565 static void | |
3566 gripe_matlab_incompatible_continuation (void) | |
3567 { | |
3568 gripe_matlab_incompatible ("\\ used as line continuation marker"); | |
3569 } | |
3570 | |
3571 static void | |
3572 gripe_matlab_incompatible_operator (const std::string& op) | |
3573 { | |
3574 std::string t = op; | |
3575 int n = t.length (); | |
3576 if (t[n-1] == '\n') | |
3577 t.resize (n-1); | |
3578 gripe_matlab_incompatible (t + " used as operator"); | |
3579 } | |
3580 | |
7722
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3581 static void |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3582 display_token (int tok) |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3583 { |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3584 switch (tok) |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3585 { |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3586 case '=': std::cerr << "'='\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3587 case ':': std::cerr << "':'\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3588 case '-': std::cerr << "'-'\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3589 case '+': std::cerr << "'+'\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3590 case '*': std::cerr << "'*'\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3591 case '/': std::cerr << "'/'\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3592 case ADD_EQ: std::cerr << "ADD_EQ\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3593 case SUB_EQ: std::cerr << "SUB_EQ\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3594 case MUL_EQ: std::cerr << "MUL_EQ\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3595 case DIV_EQ: std::cerr << "DIV_EQ\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3596 case LEFTDIV_EQ: std::cerr << "LEFTDIV_EQ\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3597 case POW_EQ: std::cerr << "POW_EQ\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3598 case EMUL_EQ: std::cerr << "EMUL_EQ\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3599 case EDIV_EQ: std::cerr << "EDIV_EQ\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3600 case ELEFTDIV_EQ: std::cerr << "ELEFTDIV_EQ\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3601 case EPOW_EQ: std::cerr << "EPOW_EQ\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3602 case AND_EQ: std::cerr << "AND_EQ\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3603 case OR_EQ: std::cerr << "OR_EQ\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3604 case LSHIFT_EQ: std::cerr << "LSHIFT_EQ\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3605 case RSHIFT_EQ: std::cerr << "RSHIFT_EQ\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3606 case LSHIFT: std::cerr << "LSHIFT\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3607 case RSHIFT: std::cerr << "RSHIFT\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3608 case EXPR_AND_AND: std::cerr << "EXPR_AND_AND\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3609 case EXPR_OR_OR: std::cerr << "EXPR_OR_OR\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3610 case EXPR_AND: std::cerr << "EXPR_AND\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3611 case EXPR_OR: std::cerr << "EXPR_OR\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3612 case EXPR_NOT: std::cerr << "EXPR_NOT\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3613 case EXPR_LT: std::cerr << "EXPR_LT\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3614 case EXPR_LE: std::cerr << "EXPR_LE\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3615 case EXPR_EQ: std::cerr << "EXPR_EQ\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3616 case EXPR_NE: std::cerr << "EXPR_NE\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3617 case EXPR_GE: std::cerr << "EXPR_GE\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3618 case EXPR_GT: std::cerr << "EXPR_GT\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3619 case LEFTDIV: std::cerr << "LEFTDIV\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3620 case EMUL: std::cerr << "EMUL\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3621 case EDIV: std::cerr << "EDIV\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3622 case ELEFTDIV: std::cerr << "ELEFTDIV\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3623 case EPLUS: std::cerr << "EPLUS\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3624 case EMINUS: std::cerr << "EMINUS\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3625 case QUOTE: std::cerr << "QUOTE\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3626 case TRANSPOSE: std::cerr << "TRANSPOSE\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3627 case PLUS_PLUS: std::cerr << "PLUS_PLUS\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3628 case MINUS_MINUS: std::cerr << "MINUS_MINUS\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3629 case POW: std::cerr << "POW\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3630 case EPOW: std::cerr << "EPOW\n"; break; |
11466
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3631 |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3632 case NUM: |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3633 case IMAG_NUM: |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3634 std::cerr << (tok == NUM ? "NUM" : "IMAG_NUM") |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3635 << " [" << yylval.tok_val->number () << "]\n"; |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3636 break; |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3637 |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3638 case STRUCT_ELT: |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3639 std::cerr << "STRUCT_ELT [" << yylval.tok_val->text () << "]\n"; break; |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3640 |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3641 case NAME: |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3642 { |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3643 symbol_table::symbol_record *sr = yylval.tok_val->sym_rec (); |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3644 std::cerr << "NAME"; |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3645 if (sr) |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3646 std::cerr << " [" << sr->name () << "]"; |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3647 std::cerr << "\n"; |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3648 } |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3649 break; |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3650 |
7722
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3651 case END: std::cerr << "END\n"; break; |
11466
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3652 |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3653 case DQ_STRING: |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3654 case SQ_STRING: |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3655 std::cerr << (tok == DQ_STRING ? "DQ_STRING" : "SQ_STRING") |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3656 << " [" << yylval.tok_val->text () << "]\n"; |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3657 break; |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3658 |
7722
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3659 case FOR: std::cerr << "FOR\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3660 case WHILE: std::cerr << "WHILE\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3661 case DO: std::cerr << "DO\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3662 case UNTIL: std::cerr << "UNTIL\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3663 case IF: std::cerr << "IF\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3664 case ELSEIF: std::cerr << "ELSEIF\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3665 case ELSE: std::cerr << "ELSE\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3666 case SWITCH: std::cerr << "SWITCH\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3667 case CASE: std::cerr << "CASE\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3668 case OTHERWISE: std::cerr << "OTHERWISE\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3669 case BREAK: std::cerr << "BREAK\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3670 case CONTINUE: std::cerr << "CONTINUE\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3671 case FUNC_RET: std::cerr << "FUNC_RET\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3672 case UNWIND: std::cerr << "UNWIND\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3673 case CLEANUP: std::cerr << "CLEANUP\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3674 case TRY: std::cerr << "TRY\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3675 case CATCH: std::cerr << "CATCH\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3676 case GLOBAL: std::cerr << "GLOBAL\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3677 case STATIC: std::cerr << "STATIC\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3678 case FCN_HANDLE: std::cerr << "FCN_HANDLE\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3679 case END_OF_INPUT: std::cerr << "END_OF_INPUT\n\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3680 case LEXICAL_ERROR: std::cerr << "LEXICAL_ERROR\n\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3681 case FCN: std::cerr << "FCN\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3682 case CLOSE_BRACE: std::cerr << "CLOSE_BRACE\n"; break; |
9474
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3683 case SCRIPT_FILE: std::cerr << "SCRIPT_FILE\n"; break; |
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3684 case FUNCTION_FILE: std::cerr << "FUNCTION_FILE\n"; break; |
9476 | 3685 case SUPERCLASSREF: std::cerr << "SUPERCLASSREF\n"; break; |
3686 case METAQUERY: std::cerr << "METAQUERY\n"; break; | |
3687 case GET: std::cerr << "GET\n"; break; | |
3688 case SET: std::cerr << "SET\n"; break; | |
3689 case PROPERTIES: std::cerr << "PROPERTIES\n"; break; | |
3690 case METHODS: std::cerr << "METHODS\n"; break; | |
3691 case EVENTS: std::cerr << "EVENTS\n"; break; | |
3692 case CLASSDEF: std::cerr << "CLASSDEF\n"; break; | |
7722
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3693 case '\n': std::cerr << "\\n\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3694 case '\r': std::cerr << "\\r\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3695 case '\t': std::cerr << "TAB\n"; break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3696 default: |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3697 { |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3698 if (tok < 256) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3699 std::cerr << static_cast<char> (tok) << "\n"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3700 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3701 std::cerr << "UNKNOWN(" << tok << ")\n"; |
7722
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3702 } |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3703 break; |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3704 } |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3705 } |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3706 |
8535 | 3707 static void |
3708 display_state (void) | |
3709 { | |
3710 std::cerr << "S: "; | |
3711 | |
3712 switch (YY_START) | |
3713 { | |
3714 case INITIAL: | |
3715 std::cerr << "INITIAL" << std::endl; | |
3716 break; | |
3717 | |
3718 case COMMAND_START: | |
3719 std::cerr << "COMMAND_START" << std::endl; | |
3720 break; | |
3721 | |
3722 case MATRIX_START: | |
3723 std::cerr << "MATRIX_START" << std::endl; | |
3724 break; | |
3725 | |
3726 case SCRIPT_FILE_BEGIN: | |
3727 std::cerr << "SCRIPT_FILE_BEGIN" << std::endl; | |
3728 break; | |
3729 | |
9474
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3730 case FUNCTION_FILE_BEGIN: |
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3731 std::cerr << "FUNCTION_FILE_BEGIN" << std::endl; |
8535 | 3732 break; |
3733 | |
3734 default: | |
3735 std::cerr << "UNKNOWN START STATE!" << std::endl; | |
3736 break; | |
3737 } | |
3738 } | |
3739 | |
3740 static void | |
3741 lexer_debug (const char *pattern, const char *text) | |
3742 { | |
3743 std::cerr << std::endl; | |
3744 | |
3745 display_state (); | |
3746 | |
3747 std::cerr << "P: " << pattern << std::endl; | |
3748 std::cerr << "T: " << text << std::endl; | |
3749 } | |
3750 | |
7722
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3751 DEFUN (__display_tokens__, args, nargout, |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3752 "-*- texinfo -*-\n\ |
8812
7d48766c21a5
use consistent format for doc strings of internal functions
John W. Eaton <jwe@octave.org>
parents:
8767
diff
changeset
|
3753 @deftypefn {Built-in Function} {} __display_tokens__ ()\n\ |
7722
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3754 Query or set the internal variable that determines whether Octave's\n\ |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3755 lexer displays tokens as they are read.\n\ |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3756 @end deftypefn") |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3757 { |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3758 return SET_INTERNAL_VARIABLE (display_tokens); |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3759 } |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3760 |
4910 | 3761 DEFUN (__token_count__, , , |
3762 "-*- texinfo -*-\n\ | |
8812
7d48766c21a5
use consistent format for doc strings of internal functions
John W. Eaton <jwe@octave.org>
parents:
8767
diff
changeset
|
3763 @deftypefn {Built-in Function} {} __token_count__ ()\n\ |
4910 | 3764 Number of language tokens processed since Octave startup.\n\ |
3765 @end deftypefn") | |
3766 { | |
3767 return octave_value (Vtoken_count); | |
3768 } | |
3769 | |
8535 | 3770 DEFUN (__lexer_debug_flag__, args, nargout, |
8812
7d48766c21a5
use consistent format for doc strings of internal functions
John W. Eaton <jwe@octave.org>
parents:
8767
diff
changeset
|
3771 "-*- texinfo -*-\n\ |
7d48766c21a5
use consistent format for doc strings of internal functions
John W. Eaton <jwe@octave.org>
parents:
8767
diff
changeset
|
3772 @deftypefn {Built-in Function} {@var{old_val} =} __lexer_debug_flag__ (@var{new_val}))\n\ |
7d48766c21a5
use consistent format for doc strings of internal functions
John W. Eaton <jwe@octave.org>
parents:
8767
diff
changeset
|
3773 Undocumented internal function.\n\ |
7d48766c21a5
use consistent format for doc strings of internal functions
John W. Eaton <jwe@octave.org>
parents:
8767
diff
changeset
|
3774 @end deftypefn") |
8535 | 3775 { |
3776 octave_value retval; | |
3777 | |
3778 retval = set_internal_variable (lexer_debug_flag, args, nargout, | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3779 "__lexer_debug_flag__"); |
8535 | 3780 |
3781 return retval; | |
3782 } |