Mercurial > octave-nkf
annotate src/lex.ll @ 13260:28e3e9158d70
fix bug with parsing cell array lists
* lex.ll (<MATRIX_START>{S}+): If spaces are converted to a comma,
set lexer_flags.looking_for_object_index to false.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Fri, 30 Sep 2011 14:40:33 -0400 |
parents | 7861a5fd3479 |
children | 2c664266e9d0 |
rev | line source |
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1994 | 1 /* |
1 | 2 |
11523 | 3 Copyright (C) 1993-2011 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 |
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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. | |
3174 | 1144 if ((interactive || forced_interactive) |
3880 | 1145 && ! (reading_fcn_file |
9476 | 1146 || reading_classdef_file |
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1147 || reading_script_file |
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1148 || get_input_from_eval_string |
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1149 || input_from_startup_file)) |
287 | 1150 yyrestart (stdin); |
991 | 1151 |
1826 | 1152 // Clear the buffer for help text. |
4426 | 1153 while (! help_buf.empty ()) |
1154 help_buf.pop (); | |
1755 | 1155 |
1826 | 1156 // Reset other flags. |
1157 lexer_flags.init (); | |
1 | 1158 } |
1159 | |
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1160 static void |
8535 | 1161 display_character (char c) |
1162 { | |
1163 if (isgraph (c)) | |
1164 std::cerr << c; | |
1165 else | |
1166 switch (c) | |
1167 { | |
1168 case 0: | |
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1169 std::cerr << "NUL"; |
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1170 break; |
8535 | 1171 |
1172 case 1: | |
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1173 std::cerr << "SOH"; |
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1174 break; |
8535 | 1175 |
1176 case 2: | |
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1177 std::cerr << "STX"; |
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1178 break; |
8535 | 1179 |
1180 case 3: | |
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1181 std::cerr << "ETX"; |
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1182 break; |
8535 | 1183 |
1184 case 4: | |
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1185 std::cerr << "EOT"; |
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1186 break; |
8535 | 1187 |
1188 case 5: | |
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1189 std::cerr << "ENQ"; |
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1190 break; |
8535 | 1191 |
1192 case 6: | |
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1193 std::cerr << "ACK"; |
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1194 break; |
8535 | 1195 |
1196 case 7: | |
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1197 std::cerr << "\\a"; |
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1198 break; |
8535 | 1199 |
1200 case 8: | |
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1201 std::cerr << "\\b"; |
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1202 break; |
8535 | 1203 |
1204 case 9: | |
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1205 std::cerr << "\\t"; |
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1206 break; |
8535 | 1207 |
1208 case 10: | |
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1209 std::cerr << "\\n"; |
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1210 break; |
8535 | 1211 |
1212 case 11: | |
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1213 std::cerr << "\\v"; |
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1214 break; |
8535 | 1215 |
1216 case 12: | |
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1217 std::cerr << "\\f"; |
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1218 break; |
8535 | 1219 |
1220 case 13: | |
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1221 std::cerr << "\\r"; |
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1222 break; |
8535 | 1223 |
1224 case 14: | |
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1225 std::cerr << "SO"; |
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1226 break; |
8535 | 1227 |
1228 case 15: | |
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1229 std::cerr << "SI"; |
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1230 break; |
8535 | 1231 |
1232 case 16: | |
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1233 std::cerr << "DLE"; |
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1234 break; |
8535 | 1235 |
1236 case 17: | |
10315
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1237 std::cerr << "DC1"; |
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|
1238 break; |
8535 | 1239 |
1240 case 18: | |
10315
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1241 std::cerr << "DC2"; |
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|
1242 break; |
8535 | 1243 |
1244 case 19: | |
10315
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|
1245 std::cerr << "DC3"; |
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|
1246 break; |
8535 | 1247 |
1248 case 20: | |
10315
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|
1249 std::cerr << "DC4"; |
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|
1250 break; |
8535 | 1251 |
1252 case 21: | |
10315
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1253 std::cerr << "NAK"; |
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|
1254 break; |
8535 | 1255 |
1256 case 22: | |
10315
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|
1257 std::cerr << "SYN"; |
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|
1258 break; |
8535 | 1259 |
1260 case 23: | |
10315
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|
1261 std::cerr << "ETB"; |
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|
1262 break; |
8535 | 1263 |
1264 case 24: | |
10315
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|
1265 std::cerr << "CAN"; |
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|
1266 break; |
8535 | 1267 |
1268 case 25: | |
10315
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|
1269 std::cerr << "EM"; |
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diff
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|
1270 break; |
8535 | 1271 |
1272 case 26: | |
10315
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|
1273 std::cerr << "SUB"; |
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|
1274 break; |
8535 | 1275 |
1276 case 27: | |
10315
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|
1277 std::cerr << "ESC"; |
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|
1278 break; |
8535 | 1279 |
1280 case 28: | |
10315
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|
1281 std::cerr << "FS"; |
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diff
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|
1282 break; |
8535 | 1283 |
1284 case 29: | |
10315
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|
1285 std::cerr << "GS"; |
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|
1286 break; |
8535 | 1287 |
1288 case 30: | |
10315
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|
1289 std::cerr << "RS"; |
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diff
changeset
|
1290 break; |
8535 | 1291 |
1292 case 31: | |
10315
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|
1293 std::cerr << "US"; |
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diff
changeset
|
1294 break; |
8535 | 1295 |
1296 case 32: | |
10315
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|
1297 std::cerr << "SPACE"; |
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|
1298 break; |
8535 | 1299 |
1300 case 127: | |
10315
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|
1301 std::cerr << "DEL"; |
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|
1302 break; |
8535 | 1303 } |
1304 } | |
8745
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|
1305 |
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|
1306 static int |
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|
1307 text_yyinput (void) |
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better handling of object indexing in lexer
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|
1308 { |
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|
1309 int c = yyinput (); |
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|
1310 |
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|
1311 if (lexer_debug_flag) |
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1312 { |
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1313 std::cerr << "I: "; |
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|
1314 display_character (c); |
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|
1315 std::cerr << std::endl; |
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|
1316 } |
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|
1317 |
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1318 // Convert CRLF into just LF and single CR into LF. |
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1319 |
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1320 if (c == '\r') |
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|
1321 { |
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|
1322 c = yyinput (); |
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|
1323 |
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|
1324 if (lexer_debug_flag) |
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|
1325 { |
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|
1326 std::cerr << "I: "; |
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|
1327 display_character (c); |
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|
1328 std::cerr << std::endl; |
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|
1329 } |
8745
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better handling of object indexing in lexer
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|
1330 |
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|
1331 if (c != '\n') |
10315
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|
1332 { |
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|
1333 xunput (c, yytext); |
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|
1334 c = '\n'; |
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|
1335 } |
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|
1336 } |
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|
1337 |
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|
1338 if (c == '\n') |
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|
1339 input_line_number++; |
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|
1340 |
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|
1341 return c; |
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|
1342 } |
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|
1343 |
8535 | 1344 static void |
8447
adab48231a03
make input_line_number work again
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|
1345 xunput (char c, char *buf) |
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|
1346 { |
8535 | 1347 if (lexer_debug_flag) |
1348 { | |
1349 std::cerr << "U: "; | |
1350 display_character (c); | |
1351 std::cerr << std::endl; | |
1352 } | |
1353 | |
8447
adab48231a03
make input_line_number work again
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diff
changeset
|
1354 if (c == '\n') |
adab48231a03
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changeset
|
1355 input_line_number--; |
adab48231a03
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|
1356 |
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1357 yyunput (c, buf); |
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|
1358 } |
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|
1359 |
767 | 1360 // If we read some newlines, we need figure out what column we're |
1361 // really looking at. | |
1362 | |
1 | 1363 static void |
1364 fixup_column_count (char *s) | |
1365 { | |
1366 char c; | |
1367 while ((c = *s++) != '\0') | |
1368 { | |
1369 if (c == '\n') | |
8447
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|
1370 { |
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1371 input_line_number++; |
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1372 current_input_column = 1; |
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1373 } |
1 | 1374 else |
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1375 current_input_column++; |
1 | 1376 } |
1377 } | |
1378 | |
767 | 1379 // Include these so that we don't have to link to libfl.a. |
246 | 1380 |
3332 | 1381 int |
1 | 1382 yywrap (void) |
1383 { | |
287 | 1384 return 1; |
1 | 1385 } |
1386 | |
767 | 1387 // Tell us all what the current buffer is. |
1388 | |
1 | 1389 YY_BUFFER_STATE |
1390 current_buffer (void) | |
1391 { | |
1392 return YY_CURRENT_BUFFER; | |
1393 } | |
1394 | |
767 | 1395 // Create a new buffer. |
1396 | |
1 | 1397 YY_BUFFER_STATE |
1398 create_buffer (FILE *f) | |
1399 { | |
1400 return yy_create_buffer (f, YY_BUF_SIZE); | |
1401 } | |
1402 | |
767 | 1403 // Start reading a new buffer. |
1404 | |
1 | 1405 void |
1406 switch_to_buffer (YY_BUFFER_STATE buf) | |
1407 { | |
1408 yy_switch_to_buffer (buf); | |
1409 } | |
1410 | |
767 | 1411 // Delete a buffer. |
1412 | |
1 | 1413 void |
1414 delete_buffer (YY_BUFFER_STATE buf) | |
1415 { | |
1416 yy_delete_buffer (buf); | |
1417 } | |
1418 | |
767 | 1419 // Restore a buffer (for unwind-prot). |
1420 | |
1 | 1421 void |
1422 restore_input_buffer (void *buf) | |
1423 { | |
2861 | 1424 switch_to_buffer (static_cast<YY_BUFFER_STATE> (buf)); |
1 | 1425 } |
1426 | |
767 | 1427 // Delete a buffer (for unwind-prot). |
1428 | |
1 | 1429 void |
1430 delete_input_buffer (void *buf) | |
1431 { | |
2861 | 1432 delete_buffer (static_cast<YY_BUFFER_STATE> (buf)); |
1 | 1433 } |
1434 | |
8745
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1435 static bool |
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|
1436 inside_any_object_index (void) |
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1437 { |
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|
1438 bool retval = false; |
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1439 |
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1440 for (std::list<bool>::const_iterator i = lexer_flags.looking_at_object_index.begin (); |
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1441 i != lexer_flags.looking_at_object_index.end (); i++) |
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1442 { |
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1443 if (*i) |
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1444 { |
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1445 retval = true; |
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1446 break; |
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1447 } |
8745
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1448 } |
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1449 |
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1450 return retval; |
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1451 } |
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1452 |
4238 | 1453 // Handle keywords. Return -1 if the keyword should be ignored. |
767 | 1454 |
1 | 1455 static int |
4867 | 1456 is_keyword_token (const std::string& s) |
1 | 1457 { |
3805 | 1458 int l = input_line_number; |
1459 int c = current_input_column; | |
1460 | |
1823 | 1461 int len = s.length (); |
922 | 1462 |
5088 | 1463 const octave_kw *kw = octave_kw_hash::in_word_set (s.c_str (), len); |
191 | 1464 |
1497 | 1465 if (kw) |
143 | 1466 { |
1497 | 1467 yylval.tok_val = 0; |
1468 | |
1469 switch (kw->kw_id) | |
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1470 { |
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changeset
|
1471 case break_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1472 case catch_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1473 case continue_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1474 case else_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1475 case otherwise_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1476 case return_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1477 case unwind_protect_cleanup_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1478 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1479 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1480 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1481 case case_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1482 case elseif_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1483 case global_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1484 case static_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1485 case until_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1486 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1487 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1488 case end_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1489 if (! reading_classdef_file |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1490 && (inside_any_object_index () |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1491 || (lexer_flags.defining_func |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1492 && ! (lexer_flags.looking_at_return_list |
11464
21b5284fa78d
avoid error when parsing nested functions
John W. Eaton <jwe@octave.org>
parents:
11431
diff
changeset
|
1493 || lexer_flags.parsed_function_name.top ())))) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1494 return 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1495 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1496 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
|
1497 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1498 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1499 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1500 case end_try_catch_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1501 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
|
1502 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1503 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1504 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1505 case end_unwind_protect_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1506 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
|
1507 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1508 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1509 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1510 case endfor_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1511 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
|
1512 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1513 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1514 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1515 case endfunction_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1516 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
|
1517 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1518 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1519 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1520 case endif_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1521 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
|
1522 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1523 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1524 |
13246 | 1525 case endparfor_kw: |
1526 yylval.tok_val = new token (token::parfor_end, l, c); | |
1527 lexer_flags.at_beginning_of_statement = true; | |
1528 break; | |
1529 | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1530 case endswitch_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1531 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
|
1532 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1533 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1534 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1535 case endwhile_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1536 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
|
1537 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1538 break; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1539 |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1540 case endclassdef_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1541 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
|
1542 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1543 break; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1544 |
13249
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1545 case endenumeration_kw: |
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1546 yylval.tok_val = new token (token::enumeration_end, l, c); |
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1547 lexer_flags.at_beginning_of_statement = true; |
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1548 break; |
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1549 |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1550 case endevents_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1551 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
|
1552 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1553 break; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1554 |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1555 case endmethods_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1556 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
|
1557 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1558 break; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1559 |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1560 case endproperties_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1561 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
|
1562 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1563 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1564 |
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
|
1565 |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1566 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
|
1567 case parfor_kw: |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1568 case while_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1569 promptflag--; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1570 lexer_flags.looping++; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1571 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1572 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1573 case do_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1574 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1575 promptflag--; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1576 lexer_flags.looping++; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1577 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1578 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1579 case try_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1580 case unwind_protect_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1581 lexer_flags.at_beginning_of_statement = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1582 promptflag--; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1583 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1584 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1585 case if_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1586 case switch_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 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1589 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1590 case get_kw: |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1591 case set_kw: |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1592 // 'get' and 'set' are keywords in classdef method |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1593 // declarations. |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1594 if (! lexer_flags.maybe_classdef_get_set_method) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1595 return 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1596 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1597 |
13249
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1598 case enumeration_kw: |
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1599 case events_kw: |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1600 case methods_kw: |
13249
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1601 case properties_kw: |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1602 // 'properties', 'methods' and 'events' are keywords for |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1603 // classdef blocks. |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1604 if (! lexer_flags.parsing_classdef) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1605 return 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1606 // fall through ... |
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 classdef_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1609 // 'classdef' is always a keyword. |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1610 promptflag--; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1611 break; |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1612 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1613 case function_kw: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1614 promptflag--; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1615 |
11367
b2191ebea12f
don't process input_event_hook when we are parsing a function
John W. Eaton <jwe@octave.org>
parents:
11217
diff
changeset
|
1616 lexer_flags.defining_func++; |
11464
21b5284fa78d
avoid error when parsing nested functions
John W. Eaton <jwe@octave.org>
parents:
11431
diff
changeset
|
1617 lexer_flags.parsed_function_name.push (false); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1618 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1619 if (! (reading_fcn_file || reading_script_file |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1620 || reading_classdef_file)) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1621 input_line_number = 1; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1622 break; |
1497 | 1623 |
3174 | 1624 case magic_file_kw: |
10315
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 if ((reading_fcn_file || reading_script_file |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1627 || reading_classdef_file) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1628 && ! curr_fcn_file_full_name.empty ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1629 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
|
1630 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1631 yylval.tok_val = new token ("stdin", l, c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1632 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1633 break; |
3174 | 1634 |
1635 case magic_line_kw: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1636 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
|
1637 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1638 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1639 default: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1640 panic_impossible (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1641 } |
1497 | 1642 |
1643 if (! yylval.tok_val) | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1644 yylval.tok_val = new token (l, c); |
1497 | 1645 |
476 | 1646 token_stack.push (yylval.tok_val); |
1497 | 1647 |
1648 return kw->tok; | |
143 | 1649 } |
1 | 1650 |
1651 return 0; | |
1652 } | |
1653 | |
2702 | 1654 static bool |
3523 | 1655 is_variable (const std::string& name) |
2702 | 1656 { |
8001
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7898
diff
changeset
|
1657 return (symbol_table::is_variable (name) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1658 || (lexer_flags.pending_local_variables.find (name) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1659 != lexer_flags.pending_local_variables.end ())); |
2702 | 1660 } |
1661 | |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1662 static std::string |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1663 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
|
1664 { |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1665 std::string buf; |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1666 |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1667 bool at_bol = true; |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1668 bool look_for_marker = false; |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1669 |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1670 bool warned_incompatible = false; |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1671 |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1672 int c = 0; |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1673 |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1674 while ((c = reader.getc ()) != EOF) |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1675 { |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1676 current_input_column++; |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1677 |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1678 if (look_for_marker) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1679 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1680 at_bol = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1681 look_for_marker = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1682 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1683 if (c == '{' || c == '}') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1684 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1685 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
|
1686 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1687 int type = c; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1688 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1689 bool done = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1690 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1691 while ((c = reader.getc ()) != EOF && ! done) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1692 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1693 current_input_column++; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1694 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1695 switch (c) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1696 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1697 case ' ': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1698 case '\t': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1699 tmp_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1700 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1701 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1702 case '\n': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1703 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1704 current_input_column = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1705 at_bol = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1706 done = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1707 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1708 if (type == '{') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1709 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1710 block_comment_nesting_level++; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1711 promptflag--; |
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 else |
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 block_comment_nesting_level--; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1716 promptflag++; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1717 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1718 if (block_comment_nesting_level == 0) |
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 buf += grab_comment_block (reader, true, eof); |
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 return buf; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1723 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1724 } |
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 break; |
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 default: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1729 at_bol = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1730 tmp_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1731 buf += tmp_buf; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1732 done = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1733 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1734 } |
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 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1737 } |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1738 |
7898
cce16b4e0970
lex.l (grab_block_comment): Use parens around || expression within && expression
John W. Eaton <jwe@octave.org>
parents:
7728
diff
changeset
|
1739 if (at_bol && (c == '%' || c == '#')) |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1740 { |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1741 if (c == '#' && ! warned_incompatible) |
10315
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 warned_incompatible = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1744 maybe_gripe_matlab_incompatible_comment (c); |
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 |
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 look_for_marker = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1749 } |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1750 else |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1751 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1752 buf += static_cast<char> (c); |
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 if (c == '\n') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1755 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1756 current_input_column = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1757 at_bol = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1758 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1759 } |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1760 } |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1761 |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1762 if (c == EOF) |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1763 eof = true; |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1764 |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1765 return buf; |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1766 } |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1767 |
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1768 std::string |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
1769 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
|
1770 bool& eof) |
1 | 1771 { |
4426 | 1772 std::string buf; |
1019 | 1773 |
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1774 // 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
|
1775 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
|
1776 |
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1777 // 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
|
1778 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
|
1779 |
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1780 bool warned_incompatible = false; |
3665 | 1781 |
1019 | 1782 int c = 0; |
1 | 1783 |
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
1784 while ((c = reader.getc ()) != EOF) |
1019 | 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 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
|
1787 |
2300 | 1788 if (begin_comment) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1789 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1790 if (c == '%' || c == '#') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1791 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1792 at_bol = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1793 continue; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1794 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1795 else if (at_bol && c == '{') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1796 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1797 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
|
1798 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1799 bool done = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1800 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1801 while ((c = reader.getc ()) != EOF && ! done) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1802 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1803 current_input_column++; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1804 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1805 switch (c) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1806 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1807 case ' ': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1808 case '\t': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1809 tmp_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1810 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1811 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1812 case '\n': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1813 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1814 current_input_column = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1815 at_bol = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1816 done = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1817 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1818 block_comment_nesting_level++; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1819 promptflag--; |
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 buf += grab_block_comment (reader, eof); |
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 in_comment = false; |
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 if (eof) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1826 goto done; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1827 } |
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 default: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1831 at_bol = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1832 tmp_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1833 buf += tmp_buf; |
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 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1836 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1837 } |
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 else |
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 at_bol = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1842 begin_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1843 } |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1844 } |
2300 | 1845 |
1019 | 1846 if (in_comment) |
10315
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 buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1849 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1850 if (c == '\n') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1851 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1852 at_bol = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1853 current_input_column = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1854 in_comment = false; |
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 // FIXME -- bailing out here prevents things like |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1857 // |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1858 // octave> # comment |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1859 // octave> x = 1 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1860 // |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1861 // from failing at the command line, while still |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1862 // allowing blocks of comments to be grabbed properly |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1863 // for function doc strings. But only the first line of |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1864 // a mult-line doc string will be picked up for |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1865 // functions defined on the command line. We need a |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1866 // better way of collecting these comments... |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1867 if (! (reading_fcn_file || reading_script_file)) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1868 goto done; |
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 } |
1019 | 1871 else |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1872 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1873 switch (c) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1874 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1875 case ' ': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1876 case '\t': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1877 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1878 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1879 case '#': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1880 if (! warned_incompatible) |
57a59eae83cc
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1881 { |
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1882 warned_incompatible = true; |
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1883 maybe_gripe_matlab_incompatible_comment (c); |
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|
1884 } |
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1885 // fall through... |
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1886 |
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1887 case '%': |
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1888 in_comment = true; |
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1889 begin_comment = true; |
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1890 break; |
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1891 |
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1892 default: |
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1893 current_input_column--; |
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1894 reader.ungetc (c); |
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1895 goto done; |
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1896 } |
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1897 } |
1019 | 1898 } |
991 | 1899 |
1019 | 1900 done: |
991 | 1901 |
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1902 if (c == EOF) |
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1903 eof = true; |
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1904 |
4426 | 1905 return buf; |
1 | 1906 } |
1907 | |
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1908 class |
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1909 flex_stream_reader : public stream_reader |
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1910 { |
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1911 public: |
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1912 flex_stream_reader (char *buf_arg) : stream_reader (), buf (buf_arg) { } |
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1913 |
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1914 int getc (void) { return ::text_yyinput (); } |
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1915 int ungetc (int c) { ::xunput (c, buf); return 0; } |
11586
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1916 |
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1917 private: |
12122
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1918 |
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1919 // No copying! |
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1920 |
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|
1921 flex_stream_reader (const flex_stream_reader&); |
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Explicitly disallow copying in some classes.
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1922 |
12174 | 1923 flex_stream_reader& operator = (const flex_stream_reader&); |
12122
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1924 |
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1925 char *buf; |
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1926 }; |
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1927 |
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1928 static int |
7723
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1929 process_comment (bool start_in_block, bool& eof) |
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1930 { |
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1931 eof = false; |
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1932 |
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1933 std::string help_txt; |
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1934 |
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1935 if (! help_buf.empty ()) |
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1936 help_txt = help_buf.top (); |
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1937 |
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1938 flex_stream_reader flex_reader (yytext); |
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1939 |
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1940 // process_comment is only supposed to be called when we are not |
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1941 // initially looking at a block comment. |
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1942 |
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1943 std::string txt = start_in_block |
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1944 ? grab_block_comment (flex_reader, eof) |
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1945 : grab_comment_block (flex_reader, false, eof); |
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1946 |
8535 | 1947 if (lexer_debug_flag) |
8536
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1948 std::cerr << "C: " << txt << std::endl; |
8535 | 1949 |
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1950 if (help_txt.empty () && nesting_level.none ()) |
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1951 { |
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1952 if (! help_buf.empty ()) |
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1953 help_buf.pop (); |
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1954 |
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1955 help_buf.push (txt); |
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1956 } |
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1957 |
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1958 octave_comment_buffer::append (txt); |
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1959 |
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1960 current_input_column = 1; |
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1961 lexer_flags.quote_is_transpose = false; |
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1962 lexer_flags.convert_spaces_to_comma = true; |
8746
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1963 lexer_flags.at_beginning_of_statement = true; |
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1964 |
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1965 if (YY_START == COMMAND_START) |
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1966 BEGIN (INITIAL); |
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1967 |
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1968 if (nesting_level.none ()) |
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1969 return '\n'; |
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1970 else if (nesting_level.is_bracket_or_brace ()) |
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1971 return ';'; |
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1972 else |
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1973 return 0; |
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|
1974 } |
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1975 |
767 | 1976 // Return 1 if the given character matches any character in the given |
1977 // string. | |
1978 | |
2857 | 1979 static bool |
2804 | 1980 match_any (char c, const char *s) |
1 | 1981 { |
1982 char tmp; | |
1983 while ((tmp = *s++) != '\0') | |
1984 { | |
1985 if (c == tmp) | |
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1986 return true; |
1 | 1987 } |
2857 | 1988 return false; |
1 | 1989 } |
1990 | |
767 | 1991 // Given information about the spacing surrounding an operator, |
1992 // return 1 if it looks like it should be treated as a binary | |
1993 // operator. For example, | |
1994 // | |
3774 | 1995 // [ 1 + 2 ] or [ 1+ 2] or [ 1+2 ] ==> binary |
1996 // | |
1997 // [ 1 +2 ] ==> unary | |
767 | 1998 |
2857 | 1999 static bool |
3246 | 2000 looks_like_bin_op (bool spc_prev, int next_char) |
1 | 2001 { |
3246 | 2002 bool spc_next = (next_char == ' ' || next_char == '\t'); |
2003 | |
608 | 2004 return ((spc_prev && spc_next) || ! spc_prev); |
1 | 2005 } |
2006 | |
3263 | 2007 // Recognize separators. If the separator is a CRLF pair, it is |
2008 // replaced by a single LF. | |
2009 | |
2010 static bool | |
2011 next_token_is_sep_op (void) | |
2012 { | |
2013 bool retval = false; | |
2014 | |
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2015 int c = text_yyinput (); |
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2016 |
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2017 retval = match_any (c, ",;\n]"); |
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2018 |
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2019 xunput (c, yytext); |
3263 | 2020 |
2021 return retval; | |
2022 } | |
2023 | |
767 | 2024 // Try to determine if the next token should be treated as a postfix |
2025 // unary operator. This is ugly, but it seems to do the right thing. | |
2026 | |
2857 | 2027 static bool |
3246 | 2028 next_token_is_postfix_unary_op (bool spc_prev) |
1 | 2029 { |
2857 | 2030 bool un_op = false; |
1 | 2031 |
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2032 int c0 = text_yyinput (); |
1 | 2033 |
3246 | 2034 if (c0 == '\'' && ! spc_prev) |
2035 { | |
2036 un_op = true; | |
2037 } | |
2038 else if (c0 == '.') | |
2039 { | |
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2040 int c1 = text_yyinput (); |
3246 | 2041 un_op = (c1 == '\''); |
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2042 xunput (c1, yytext); |
3246 | 2043 } |
4613 | 2044 else if (c0 == '+') |
2045 { | |
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2046 int c1 = text_yyinput (); |
4613 | 2047 un_op = (c1 == '+'); |
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2048 xunput (c1, yytext); |
4613 | 2049 } |
2050 else if (c0 == '-') | |
2051 { | |
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2052 int c1 = text_yyinput (); |
4613 | 2053 un_op = (c1 == '-'); |
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2054 xunput (c1, yytext); |
4613 | 2055 } |
1 | 2056 |
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2057 xunput (c0, yytext); |
1 | 2058 |
2059 return un_op; | |
2060 } | |
2061 | |
767 | 2062 // Try to determine if the next token should be treated as a binary |
3246 | 2063 // operator. |
1521 | 2064 // |
3246 | 2065 // This kluge exists because whitespace is not always ignored inside |
3774 | 2066 // the square brackets that are used to create matrix objects (though |
2067 // spacing only really matters in the cases that can be interpreted | |
2068 // either as binary ops or prefix unary ops: currently just +, -). | |
2069 // | |
3779 | 2070 // Note that a line continuation directly following a + or - operator |
2071 // (e.g., the characters '[' 'a' ' ' '+' '\' LFD 'b' ']') will be | |
2072 // parsed as a binary operator. | |
767 | 2073 |
2857 | 2074 static bool |
3246 | 2075 next_token_is_bin_op (bool spc_prev) |
1 | 2076 { |
2857 | 2077 bool bin_op = false; |
1 | 2078 |
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2079 int c0 = text_yyinput (); |
1 | 2080 |
2081 switch (c0) | |
2082 { | |
777 | 2083 case '+': |
2084 case '-': | |
3774 | 2085 { |
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2086 int c1 = text_yyinput (); |
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2087 |
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2088 switch (c1) |
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changeset
|
2089 { |
57a59eae83cc
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diff
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|
2090 case '+': |
57a59eae83cc
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diff
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|
2091 case '-': |
57a59eae83cc
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|
2092 // Unary ops, spacing doesn't matter. |
57a59eae83cc
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10182
diff
changeset
|
2093 break; |
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diff
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|
2094 |
57a59eae83cc
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diff
changeset
|
2095 case '=': |
57a59eae83cc
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|
2096 // Binary ops, spacing doesn't matter. |
57a59eae83cc
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diff
changeset
|
2097 bin_op = true; |
57a59eae83cc
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diff
changeset
|
2098 break; |
57a59eae83cc
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diff
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|
2099 |
57a59eae83cc
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|
2100 default: |
57a59eae83cc
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diff
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|
2101 // Could be either, spacing matters. |
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untabify src C++ source files
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|
2102 bin_op = looks_like_bin_op (spc_prev, c1); |
57a59eae83cc
untabify src C++ source files
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diff
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|
2103 break; |
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diff
changeset
|
2104 } |
57a59eae83cc
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diff
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|
2105 |
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diff
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|
2106 xunput (c1, yytext); |
3774 | 2107 } |
2108 break; | |
2109 | |
2110 case ':': | |
3246 | 2111 case '/': |
2112 case '\\': | |
2113 case '^': | |
3774 | 2114 // Always a binary op (may also include /=, \=, and ^=). |
2115 bin_op = true; | |
1276 | 2116 break; |
2117 | |
3246 | 2118 // .+ .- ./ .\ .^ .* .** |
1554 | 2119 case '.': |
2120 { | |
10315
57a59eae83cc
untabify src C++ source files
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diff
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|
2121 int c1 = text_yyinput (); |
57a59eae83cc
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diff
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|
2122 |
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2123 if (match_any (c1, "+-/\\^*")) |
57a59eae83cc
untabify src C++ source files
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diff
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|
2124 // Always a binary op (may also include .+=, .-=, ./=, ...). |
57a59eae83cc
untabify src C++ source files
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diff
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|
2125 bin_op = true; |
57a59eae83cc
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diff
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|
2126 else if (! isdigit (c1) && c1 != ' ' && c1 != '\t' && c1 != '.') |
57a59eae83cc
untabify src C++ source files
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diff
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|
2127 // A structure element reference is a binary op. |
57a59eae83cc
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diff
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|
2128 bin_op = true; |
57a59eae83cc
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diff
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|
2129 |
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diff
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|
2130 xunput (c1, yytext); |
1554 | 2131 } |
2132 break; | |
2133 | |
3246 | 2134 // = == & && | || * ** |
2135 case '=': | |
1 | 2136 case '&': |
3246 | 2137 case '|': |
1 | 2138 case '*': |
3774 | 2139 // Always a binary op (may also include ==, &&, ||, **). |
2140 bin_op = true; | |
3246 | 2141 break; |
2142 | |
3774 | 2143 // < <= <> > >= |
1 | 2144 case '<': |
2145 case '>': | |
3774 | 2146 // Always a binary op (may also include <=, <>, >=). |
2147 bin_op = true; | |
2148 break; | |
2149 | |
2150 // ~= != | |
777 | 2151 case '~': |
2152 case '!': | |
3246 | 2153 { |
10315
57a59eae83cc
untabify src C++ source files
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diff
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|
2154 int c1 = text_yyinput (); |
57a59eae83cc
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|
2155 |
57a59eae83cc
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diff
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|
2156 // ~ and ! can be unary ops, so require following =. |
57a59eae83cc
untabify src C++ source files
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diff
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|
2157 if (c1 == '=') |
57a59eae83cc
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diff
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|
2158 bin_op = true; |
57a59eae83cc
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diff
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|
2159 |
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diff
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|
2160 xunput (c1, yytext); |
3246 | 2161 } |
1 | 2162 break; |
2163 | |
2164 default: | |
1276 | 2165 break; |
1 | 2166 } |
2167 | |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2168 xunput (c0, yytext); |
1 | 2169 |
2170 return bin_op; | |
2171 } | |
2172 | |
767 | 2173 // Used to delete trailing white space from tokens. |
2174 | |
3536 | 2175 static std::string |
1 | 2176 strip_trailing_whitespace (char *s) |
2177 { | |
3523 | 2178 std::string retval = s; |
1 | 2179 |
1823 | 2180 size_t pos = retval.find_first_of (" \t"); |
1 | 2181 |
8021 | 2182 if (pos != std::string::npos) |
1823 | 2183 retval.resize (pos); |
1 | 2184 |
2185 return retval; | |
2186 } | |
2187 | |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
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7722
diff
changeset
|
2188 // FIXME -- we need to handle block comments here. |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
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7722
diff
changeset
|
2189 |
3665 | 2190 static void |
2191 scan_for_comments (const char *text) | |
2192 { | |
2193 std::string comment_buf; | |
2194 | |
2195 bool in_comment = false; | |
2196 bool beginning_of_comment = false; | |
2197 | |
2198 int len = strlen (text); | |
2199 int i = 0; | |
2200 | |
2201 while (i < len) | |
2202 { | |
2203 char c = text[i++]; | |
2204 | |
2205 switch (c) | |
10315
57a59eae83cc
untabify src C++ source files
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diff
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|
2206 { |
57a59eae83cc
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diff
changeset
|
2207 case '%': |
57a59eae83cc
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diff
changeset
|
2208 case '#': |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2209 if (in_comment) |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2210 { |
57a59eae83cc
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|
2211 if (! beginning_of_comment) |
57a59eae83cc
untabify src C++ source files
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diff
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|
2212 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2213 } |
57a59eae83cc
untabify src C++ source files
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changeset
|
2214 else |
57a59eae83cc
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diff
changeset
|
2215 { |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2216 maybe_gripe_matlab_incompatible_comment (c); |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2217 in_comment = true; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2218 beginning_of_comment = true; |
57a59eae83cc
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diff
changeset
|
2219 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2220 break; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2221 |
57a59eae83cc
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diff
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|
2222 case '\n': |
57a59eae83cc
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diff
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|
2223 if (in_comment) |
57a59eae83cc
untabify src C++ source files
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diff
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|
2224 { |
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diff
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|
2225 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2226 octave_comment_buffer::append (comment_buf); |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2227 comment_buf.resize (0); |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2228 in_comment = false; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2229 beginning_of_comment = false; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2230 } |
57a59eae83cc
untabify src C++ source files
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10182
diff
changeset
|
2231 break; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2232 |
57a59eae83cc
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diff
changeset
|
2233 default: |
57a59eae83cc
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diff
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|
2234 if (in_comment) |
57a59eae83cc
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diff
changeset
|
2235 { |
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untabify src C++ source files
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changeset
|
2236 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2237 beginning_of_comment = false; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2238 } |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2239 break; |
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diff
changeset
|
2240 } |
3665 | 2241 } |
2242 | |
2243 if (! comment_buf.empty ()) | |
2244 octave_comment_buffer::append (comment_buf); | |
2245 } | |
2246 | |
1001 | 2247 // Discard whitespace, including comments and continuations. |
1088 | 2248 // |
2249 // Return value is logical OR of the following values: | |
2250 // | |
1826 | 2251 // ATE_NOTHING : no spaces to eat |
1088 | 2252 // ATE_SPACE_OR_TAB : space or tab in input |
2253 // ATE_NEWLINE : bare new line in input | |
1001 | 2254 |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
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7722
diff
changeset
|
2255 // FIXME -- we need to handle block comments here. |
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
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7722
diff
changeset
|
2256 |
1826 | 2257 static yum_yum |
975 | 2258 eat_whitespace (void) |
2259 { | |
1826 | 2260 yum_yum retval = ATE_NOTHING; |
3665 | 2261 |
2262 std::string comment_buf; | |
2263 | |
2857 | 2264 bool in_comment = false; |
3665 | 2265 bool beginning_of_comment = false; |
2266 | |
2267 int c = 0; | |
2268 | |
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
|
2269 while ((c = text_yyinput ()) != EOF) |
975 | 2270 { |
2271 current_input_column++; | |
2272 | |
2273 switch (c) | |
10315
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2274 { |
57a59eae83cc
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|
2275 case ' ': |
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diff
changeset
|
2276 case '\t': |
57a59eae83cc
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changeset
|
2277 if (in_comment) |
57a59eae83cc
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|
2278 { |
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|
2279 comment_buf += static_cast<char> (c); |
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|
2280 beginning_of_comment = false; |
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|
2281 } |
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|
2282 retval |= ATE_SPACE_OR_TAB; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2283 break; |
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diff
changeset
|
2284 |
57a59eae83cc
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|
2285 case '\n': |
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changeset
|
2286 retval |= ATE_NEWLINE; |
57a59eae83cc
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changeset
|
2287 if (in_comment) |
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|
2288 { |
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changeset
|
2289 comment_buf += static_cast<char> (c); |
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untabify src C++ source files
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changeset
|
2290 octave_comment_buffer::append (comment_buf); |
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untabify src C++ source files
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changeset
|
2291 comment_buf.resize (0); |
57a59eae83cc
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changeset
|
2292 in_comment = false; |
57a59eae83cc
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changeset
|
2293 beginning_of_comment = false; |
57a59eae83cc
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|
2294 } |
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|
2295 current_input_column = 0; |
57a59eae83cc
untabify src C++ source files
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changeset
|
2296 break; |
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changeset
|
2297 |
57a59eae83cc
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|
2298 case '#': |
57a59eae83cc
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|
2299 case '%': |
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|
2300 if (in_comment) |
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changeset
|
2301 { |
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|
2302 if (! beginning_of_comment) |
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|
2303 comment_buf += static_cast<char> (c); |
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|
2304 } |
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|
2305 else |
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10182
diff
changeset
|
2306 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2307 maybe_gripe_matlab_incompatible_comment (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2308 in_comment = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2309 beginning_of_comment = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2310 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2311 break; |
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 case '.': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2314 if (in_comment) |
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 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2317 beginning_of_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2318 break; |
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 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2321 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2322 if (have_ellipsis_continuation ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2323 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2324 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2325 goto done; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2326 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2327 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2328 case '\\': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2329 if (in_comment) |
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 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2332 beginning_of_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2333 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2334 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2335 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2336 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2337 if (have_continuation ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2338 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2339 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2340 goto done; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2341 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2342 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2343 default: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2344 if (in_comment) |
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 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2347 beginning_of_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2348 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2349 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2350 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2351 goto done; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2352 } |
975 | 2353 } |
2354 | |
3665 | 2355 if (! comment_buf.empty ()) |
2356 octave_comment_buffer::append (comment_buf); | |
2357 | |
975 | 2358 done: |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2359 xunput (c, yytext); |
1082 | 2360 current_input_column--; |
1001 | 2361 return retval; |
975 | 2362 } |
2363 | |
3220 | 2364 static inline bool |
2365 looks_like_hex (const char *s, int len) | |
2366 { | |
2367 return (len > 2 && s[0] == '0' && (s[1] == 'x' || s[1] == 'X')); | |
2368 } | |
2369 | |
975 | 2370 static void |
3246 | 2371 handle_number (void) |
972 | 2372 { |
3220 | 2373 double value = 0.0; |
2374 int nread = 0; | |
2375 | |
3598 | 2376 if (looks_like_hex (yytext, strlen (yytext))) |
3220 | 2377 { |
2378 unsigned long ival; | |
3598 | 2379 |
2380 nread = sscanf (yytext, "%lx", &ival); | |
2381 | |
3220 | 2382 value = static_cast<double> (ival); |
2383 } | |
2384 else | |
3598 | 2385 { |
2386 char *tmp = strsave (yytext); | |
2387 | |
2388 char *idx = strpbrk (tmp, "Dd"); | |
2621 | 2389 |
3598 | 2390 if (idx) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2391 *idx = 'e'; |
3598 | 2392 |
2393 nread = sscanf (tmp, "%lf", &value); | |
2394 | |
2395 delete [] tmp; | |
2396 } | |
972 | 2397 |
1826 | 2398 // If yytext doesn't contain a valid number, we are in deep doo doo. |
985 | 2399 |
972 | 2400 assert (nread == 1); |
2401 | |
3988 | 2402 lexer_flags.quote_is_transpose = true; |
2403 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
|
2404 lexer_flags.looking_for_object_index = false; |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2405 lexer_flags.at_beginning_of_statement = false; |
972 | 2406 |
2407 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
|
2408 current_input_column); |
972 | 2409 |
2410 token_stack.push (yylval.tok_val); | |
2411 | |
2412 current_input_column += yyleng; | |
2413 | |
2414 do_comma_insert_check (); | |
2415 } | |
2416 | |
1001 | 2417 // We have seen a backslash and need to find out if it should be |
2418 // treated as a continuation character. If so, this eats it, up to | |
2419 // and including the new line character. | |
2420 // | |
973 | 2421 // Match whitespace only, followed by a comment character or newline. |
2422 // Once a comment character is found, discard all input until newline. | |
2423 // If non-whitespace characters are found before comment | |
2424 // characters, return 0. Otherwise, return 1. | |
2425 | |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
2426 // 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
|
2427 |
2857 | 2428 static bool |
3096 | 2429 have_continuation (bool trailing_comments_ok) |
973 | 2430 { |
5765 | 2431 std::ostringstream buf; |
973 | 2432 |
3665 | 2433 std::string comment_buf; |
2434 | |
2857 | 2435 bool in_comment = false; |
3665 | 2436 bool beginning_of_comment = false; |
2437 | |
2438 int c = 0; | |
2439 | |
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
|
2440 while ((c = text_yyinput ()) != EOF) |
973 | 2441 { |
3802 | 2442 buf << static_cast<char> (c); |
973 | 2443 |
2444 switch (c) | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2445 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2446 case ' ': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2447 case '\t': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2448 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2449 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2450 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2451 beginning_of_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2452 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2453 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2454 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2455 case '%': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2456 case '#': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2457 if (trailing_comments_ok) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2458 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2459 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2460 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2461 if (! beginning_of_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2462 comment_buf += static_cast<char> (c); |
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 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2465 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2466 maybe_gripe_matlab_incompatible_comment (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2467 in_comment = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2468 beginning_of_comment = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2469 } |
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 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2472 goto cleanup; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2473 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2474 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2475 case '\n': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2476 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2477 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2478 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2479 octave_comment_buffer::append (comment_buf); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2480 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2481 current_input_column = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2482 promptflag--; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2483 gripe_matlab_incompatible_continuation (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2484 return true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2485 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2486 default: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2487 if (in_comment) |
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 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2490 beginning_of_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2491 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2492 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2493 goto cleanup; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2494 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2495 } |
973 | 2496 } |
2497 | |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2498 xunput (c, yytext); |
2857 | 2499 return false; |
973 | 2500 |
3096 | 2501 cleanup: |
4051 | 2502 |
5765 | 2503 std::string s = buf.str (); |
4051 | 2504 |
2505 int len = s.length (); | |
2506 while (len--) | |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2507 xunput (s[len], yytext); |
3096 | 2508 |
2857 | 2509 return false; |
973 | 2510 } |
2511 | |
1001 | 2512 // We have seen a `.' and need to see if it is the start of a |
2513 // continuation. If so, this eats it, up to and including the new | |
2514 // line character. | |
2515 | |
2857 | 2516 static bool |
3096 | 2517 have_ellipsis_continuation (bool trailing_comments_ok) |
973 | 2518 { |
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
|
2519 char c1 = text_yyinput (); |
973 | 2520 if (c1 == '.') |
2521 { | |
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
|
2522 char c2 = text_yyinput (); |
1091 | 2523 if (c2 == '.' && have_continuation (trailing_comments_ok)) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2524 return true; |
973 | 2525 else |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2526 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2527 xunput (c2, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2528 xunput (c1, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2529 } |
973 | 2530 } |
2531 else | |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2532 xunput (c1, yytext); |
973 | 2533 |
2857 | 2534 return false; |
973 | 2535 } |
2536 | |
1001 | 2537 // See if we have a continuation line. If so, eat it and the leading |
2538 // whitespace on the next line. | |
1088 | 2539 // |
2540 // Return value is the same as described for eat_whitespace(). | |
1001 | 2541 |
1826 | 2542 static yum_yum |
1001 | 2543 eat_continuation (void) |
2544 { | |
1826 | 2545 int retval = ATE_NOTHING; |
3665 | 2546 |
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
|
2547 int c = text_yyinput (); |
3665 | 2548 |
1001 | 2549 if ((c == '.' && have_ellipsis_continuation ()) |
3105 | 2550 || (c == '\\' && have_continuation ())) |
1001 | 2551 retval = eat_whitespace (); |
2552 else | |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2553 xunput (c, yytext); |
1001 | 2554 |
2555 return retval; | |
2556 } | |
2557 | |
973 | 2558 static int |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2559 handle_string (char delim) |
973 | 2560 { |
5765 | 2561 std::ostringstream buf; |
973 | 2562 |
3805 | 2563 int bos_line = input_line_number; |
2564 int bos_col = current_input_column; | |
2565 | |
973 | 2566 int c; |
1031 | 2567 int escape_pending = 0; |
973 | 2568 |
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
|
2569 while ((c = text_yyinput ()) != EOF) |
973 | 2570 { |
2571 current_input_column++; | |
2572 | |
3105 | 2573 if (c == '\\') |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2574 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2575 if (delim == '\'' || escape_pending) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2576 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2577 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2578 escape_pending = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2579 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2580 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2581 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2582 if (have_continuation (false)) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2583 escape_pending = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2584 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2585 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2586 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2587 escape_pending = 1; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2588 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2589 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2590 continue; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2591 } |
973 | 2592 else if (c == '.') |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2593 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2594 if (delim == '\'' || ! have_ellipsis_continuation (false)) |
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 } |
973 | 2597 else if (c == '\n') |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2598 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2599 error ("unterminated string constant"); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2600 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2601 } |
973 | 2602 else if (c == delim) |
10315
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 if (escape_pending) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2605 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2606 else |
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 c = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2609 if (c == delim) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2610 { |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2611 buf << static_cast<char> (c); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2612 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2613 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2614 { |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2615 std::string s; |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2616 xunput (c, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2617 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2618 if (delim == '\'') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2619 s = buf.str (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2620 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2621 s = do_string_escapes (buf.str ()); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2622 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2623 lexer_flags.quote_is_transpose = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2624 lexer_flags.convert_spaces_to_comma = true; |
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 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
|
2627 token_stack.push (yylval.tok_val); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2628 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2629 if (delim == '"') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2630 gripe_matlab_incompatible ("\" used as string delimiter"); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2631 else if (delim == '\'') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2632 gripe_single_quote_string (); |
3400 | 2633 |
8745
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
2634 lexer_flags.looking_for_object_index = true; |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2635 lexer_flags.at_beginning_of_statement = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2636 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2637 return delim == '"' ? DQ_STRING : SQ_STRING; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2638 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2639 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2640 } |
973 | 2641 else |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2642 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2643 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2644 } |
973 | 2645 |
1031 | 2646 escape_pending = 0; |
973 | 2647 } |
2648 | |
2649 return LEXICAL_ERROR; | |
2650 } | |
2651 | |
3208 | 2652 static bool |
2653 next_token_is_assign_op (void) | |
2654 { | |
2655 bool retval = false; | |
2656 | |
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
|
2657 int c0 = text_yyinput (); |
3208 | 2658 |
2659 switch (c0) | |
2660 { | |
2661 case '=': | |
2662 { | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2663 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2664 xunput (c1, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2665 if (c1 != '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2666 retval = true; |
3208 | 2667 } |
2668 break; | |
2669 | |
2670 case '+': | |
2671 case '-': | |
2672 case '*': | |
2673 case '/': | |
2674 case '\\': | |
2675 case '&': | |
2676 case '|': | |
2677 { | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2678 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2679 xunput (c1, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2680 if (c1 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2681 retval = true; |
3208 | 2682 } |
2683 break; | |
2684 | |
2685 case '.': | |
2686 { | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2687 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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10182
diff
changeset
|
2688 if (match_any (c1, "+-*/\\")) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2689 { |
57a59eae83cc
untabify src C++ source files
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10182
diff
changeset
|
2690 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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10182
diff
changeset
|
2691 xunput (c2, yytext); |
57a59eae83cc
untabify src C++ source files
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10182
diff
changeset
|
2692 if (c2 == '=') |
57a59eae83cc
untabify src C++ source files
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parents:
10182
diff
changeset
|
2693 retval = true; |
57a59eae83cc
untabify src C++ source files
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10182
diff
changeset
|
2694 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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10182
diff
changeset
|
2695 xunput (c1, yytext); |
3208 | 2696 } |
2697 break; | |
2698 | |
2699 case '>': | |
2700 { | |
10315
57a59eae83cc
untabify src C++ source files
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10182
diff
changeset
|
2701 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2702 if (c1 == '>') |
57a59eae83cc
untabify src C++ source files
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10182
diff
changeset
|
2703 { |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2704 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2705 xunput (c2, yytext); |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2706 if (c2 == '=') |
57a59eae83cc
untabify src C++ source files
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10182
diff
changeset
|
2707 retval = true; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2708 } |
57a59eae83cc
untabify src C++ source files
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10182
diff
changeset
|
2709 xunput (c1, yytext); |
3208 | 2710 } |
2711 break; | |
2712 | |
2713 case '<': | |
2714 { | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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10182
diff
changeset
|
2715 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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10182
diff
changeset
|
2716 if (c1 == '<') |
57a59eae83cc
untabify src C++ source files
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10182
diff
changeset
|
2717 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2718 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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10182
diff
changeset
|
2719 xunput (c2, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2720 if (c2 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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10182
diff
changeset
|
2721 retval = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2722 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2723 xunput (c1, yytext); |
3208 | 2724 } |
2725 break; | |
2726 | |
2727 default: | |
2728 break; | |
2729 } | |
2730 | |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2731 xunput (c0, yytext); |
3208 | 2732 |
2733 return retval; | |
2734 } | |
2735 | |
4633 | 2736 static bool |
2737 next_token_is_index_op (void) | |
2738 { | |
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
|
2739 int c = text_yyinput (); |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2740 xunput (c, yytext); |
4633 | 2741 return c == '(' || c == '{'; |
2742 } | |
2743 | |
4612 | 2744 static int |
2745 handle_close_bracket (bool spc_gobbled, int bracket_type) | |
971 | 2746 { |
4612 | 2747 int retval = bracket_type; |
3208 | 2748 |
1826 | 2749 if (! nesting_level.none ()) |
971 | 2750 { |
1826 | 2751 nesting_level.remove (); |
4613 | 2752 |
2753 if (bracket_type == ']') | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2754 lexer_flags.bracketflag--; |
4613 | 2755 else if (bracket_type == '}') |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2756 lexer_flags.braceflag--; |
4613 | 2757 else |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2758 panic_impossible (); |
971 | 2759 } |
2760 | |
4613 | 2761 if (lexer_flags.bracketflag == 0 && lexer_flags.braceflag == 0) |
4323 | 2762 BEGIN (INITIAL); |
1001 | 2763 |
4608 | 2764 if (bracket_type == ']' |
2765 && next_token_is_assign_op () | |
2766 && ! lexer_flags.looking_at_return_list) | |
971 | 2767 { |
3208 | 2768 retval = CLOSE_BRACE; |
971 | 2769 } |
4613 | 2770 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
|
2771 && lexer_flags.convert_spaces_to_comma |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2772 && (nesting_level.is_bracket () |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2773 || (nesting_level.is_brace () |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2774 && ! lexer_flags.looking_at_object_index.front ()))) |
971 | 2775 { |
4633 | 2776 bool index_op = next_token_is_index_op (); |
2777 | |
2778 // Don't insert comma if we are looking at something like | |
2779 // | |
2780 // [x{i}{j}] or [x{i}(j)] | |
2781 // | |
2782 // but do if we are looking at | |
2783 // | |
2784 // [x{i} {j}] or [x{i} (j)] | |
2785 | |
2786 if (spc_gobbled || ! (bracket_type == '}' && index_op)) | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2787 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2788 bool bin_op = next_token_is_bin_op (spc_gobbled); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2789 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2790 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
|
2791 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2792 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
|
2793 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2794 if (! (postfix_un_op || bin_op || sep_op)) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2795 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2796 maybe_warn_separator_insert (','); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2797 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2798 xunput (',', yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2799 return retval; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2800 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2801 } |
971 | 2802 } |
2803 | |
2857 | 2804 lexer_flags.quote_is_transpose = true; |
2805 lexer_flags.convert_spaces_to_comma = true; | |
3208 | 2806 |
2807 return retval; | |
971 | 2808 } |
2809 | |
1072 | 2810 static void |
2811 maybe_unput_comma (int spc_gobbled) | |
2812 { | |
4613 | 2813 if (nesting_level.is_bracket () |
2814 || (nesting_level.is_brace () | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2815 && ! lexer_flags.looking_at_object_index.front ())) |
1072 | 2816 { |
3246 | 2817 int bin_op = next_token_is_bin_op (spc_gobbled); |
1072 | 2818 |
3246 | 2819 int postfix_un_op = next_token_is_postfix_unary_op (spc_gobbled); |
1072 | 2820 |
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
|
2821 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
|
2822 int c2 = text_yyinput (); |
2970 | 2823 |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2824 xunput (c2, yytext); |
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
2825 xunput (c1, yytext); |
2970 | 2826 |
3263 | 2827 int sep_op = next_token_is_sep_op (); |
2970 | 2828 |
1072 | 2829 int dot_op = (c1 == '.' |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2830 && (isalpha (c2) || isspace (c2) || c2 == '_')); |
2970 | 2831 |
3388 | 2832 if (postfix_un_op || bin_op || sep_op || dot_op) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2833 return; |
3388 | 2834 |
3985 | 2835 int index_op = (c1 == '(' || c1 == '{'); |
3388 | 2836 |
4476 | 2837 // If there is no space before the indexing op, we don't insert |
2838 // a comma. | |
2839 | |
2840 if (index_op && ! spc_gobbled) | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2841 return; |
4476 | 2842 |
2843 maybe_warn_separator_insert (','); | |
2844 | |
8745
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
2845 xunput (',', yytext); |
1072 | 2846 } |
2847 } | |
2848 | |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2849 static bool |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2850 next_token_can_follow_bin_op (void) |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2851 { |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2852 std::stack<char> buf; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2853 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2854 int c = EOF; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2855 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2856 // Skip whitespace in current statement on current line |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2857 while (true) |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2858 { |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2859 c = text_yyinput (); |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2860 |
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
|
2861 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
|
2862 |
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
|
2863 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
|
2864 break; |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2865 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2866 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2867 // Restore input. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2868 while (! buf.empty ()) |
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 xunput (buf.top (), yytext); |
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 buf.pop (); |
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 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2875 return (isalnum (c) || match_any (c, "!\"'(-[_{~")); |
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 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2878 static bool |
10052
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
2879 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
|
2880 { |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
2881 // 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
|
2882 // 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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10048
diff
changeset
|
2883 |
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
|
2884 return ! (tok == "e" |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
2885 || tok == "I" || tok == "i" |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
2886 || tok == "J" || tok == "j" |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
2887 || tok == "Inf" || tok == "inf" |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
2888 || 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
|
2889 } |
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
|
2890 |
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
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10048
diff
changeset
|
2891 static bool |
8746
5dd06f19e9be
handle commands in the lexer
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diff
changeset
|
2892 looks_like_command_arg (void) |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
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8745
diff
changeset
|
2893 { |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
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8745
diff
changeset
|
2894 bool retval = true; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2895 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2896 int c0 = text_yyinput (); |
5dd06f19e9be
handle commands in the lexer
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8745
diff
changeset
|
2897 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
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8745
diff
changeset
|
2898 switch (c0) |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2899 { |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
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8745
diff
changeset
|
2900 // = == |
5dd06f19e9be
handle commands in the lexer
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8745
diff
changeset
|
2901 case '=': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2902 { |
10315
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2903 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2904 |
57a59eae83cc
untabify src C++ source files
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changeset
|
2905 if (c1 == '=') |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2906 { |
57a59eae83cc
untabify src C++ source files
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changeset
|
2907 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
2908 |
57a59eae83cc
untabify src C++ source files
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changeset
|
2909 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
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changeset
|
2910 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
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10182
diff
changeset
|
2911 retval = false; |
57a59eae83cc
untabify src C++ source files
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changeset
|
2912 |
57a59eae83cc
untabify src C++ source files
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changeset
|
2913 xunput (c2, yytext); |
57a59eae83cc
untabify src C++ source files
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changeset
|
2914 } |
57a59eae83cc
untabify src C++ source files
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changeset
|
2915 else |
57a59eae83cc
untabify src C++ source files
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parents:
10182
diff
changeset
|
2916 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2917 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2918 xunput (c1, yytext); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2919 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2920 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2921 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2922 case '(': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2923 case '{': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2924 // Indexing. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2925 retval = false; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2926 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2927 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2928 case '\n': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2929 // EOL. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2930 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2931 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2932 case '\'': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2933 case '"': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2934 // Beginning of a character string. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2935 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2936 |
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 case '+': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2939 case '-': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2940 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2941 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2942 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2943 switch (c1) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2944 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2945 case '\n': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2946 // EOL. |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2947 case '+': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2948 case '-': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2949 // Unary ops, spacing doesn't matter. |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2950 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2951 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2952 case '\t': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2953 case ' ': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2954 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2955 if (next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2956 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2957 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2958 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2959 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2960 case '=': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2961 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2962 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2963 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2964 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2965 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2966 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2967 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2968 xunput (c2, yytext); |
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 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2971 } |
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 xunput (c1, yytext); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2974 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2975 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2976 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2977 case ':': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2978 case '/': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2979 case '\\': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2980 case '^': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2981 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2982 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2983 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2984 if (! match_any (c1, ",;\n") && (c1 == ' ' || c1 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2985 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2986 retval = false; |
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 xunput (c1, yytext); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2989 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2990 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2991 |
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 case '.': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2994 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2995 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2996 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2997 if (match_any (c1, "+-/\\^*")) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2998 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2999 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3000 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3001 if (c2 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3002 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3003 int c3 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3004 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3005 if (! match_any (c3, ",;\n") && (c3 == ' ' || c3 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3006 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3007 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3008 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3009 xunput (c3, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3010 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3011 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
|
3012 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3013 retval = false; |
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 xunput (c2, yytext); |
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 else if (! match_any (c1, ",;\n") |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3018 && (! isdigit (c1) && c1 != ' ' && c1 != '\t' |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3019 && c1 != '.')) |
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 // Structure reference. FIXME -- is this a complete check? |
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 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3024 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3025 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3026 xunput (c1, yytext); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3027 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3028 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3029 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3030 // & && | || * ** |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3031 case '&': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3032 case '|': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3033 case '*': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3034 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3035 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3036 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3037 if (c1 == c0) |
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 int c2 = text_yyinput (); |
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 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3042 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3043 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3044 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3045 xunput (c2, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3046 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3047 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
|
3048 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3049 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3050 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3051 xunput (c1, yytext); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3052 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3053 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3054 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3055 // < <= > >= |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3056 case '<': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3057 case '>': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3058 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3059 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3060 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3061 if (c1 == '=') |
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 int c2 = text_yyinput (); |
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 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\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 (c2, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3070 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3071 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
|
3072 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3073 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3074 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3075 xunput (c1, yytext); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3076 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3077 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3078 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3079 // ~= != |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3080 case '~': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3081 case '!': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3082 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3083 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3084 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3085 // ~ and ! can be unary ops, so require following =. |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3086 if (c1 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3087 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3088 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3089 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3090 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3091 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3092 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3093 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3094 xunput (c2, yytext); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3095 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3096 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
|
3097 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3098 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3099 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3100 xunput (c1, yytext); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3101 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3102 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3103 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3104 default: |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3105 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3106 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3107 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3108 xunput (c0, yytext); |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3109 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3110 return retval; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3111 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3112 |
9476 | 3113 static int |
3114 handle_superclass_identifier (void) | |
3115 { | |
3116 eat_continuation (); | |
3117 | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3118 std::string pkg; |
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3119 std::string meth = strip_trailing_whitespace (yytext); |
9476 | 3120 size_t pos = meth.find ("@"); |
3121 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
|
3122 meth = meth.substr (0, pos - 1); |
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3123 |
9476 | 3124 pos = cls.find ("."); |
3125 if (pos != std::string::npos) | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3126 { |
9476 | 3127 pkg = cls.substr (pos).substr (1); |
3128 cls = cls.substr (0, pos - 1); | |
3129 } | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3130 |
9476 | 3131 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
|
3132 || is_keyword_token (pkg)); |
9476 | 3133 if (kw_token) |
3134 { | |
3135 error ("method, class and package names may not be keywords"); | |
3136 return LEXICAL_ERROR; | |
3137 } | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3138 |
9476 | 3139 yylval.tok_val |
3140 = new token (meth.empty () ? 0 : &(symbol_table::insert (meth)), | |
3141 cls.empty () ? 0 : &(symbol_table::insert (cls)), | |
3142 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
|
3143 input_line_number, current_input_column); |
9476 | 3144 token_stack.push (yylval.tok_val); |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3145 |
9476 | 3146 lexer_flags.convert_spaces_to_comma = true; |
3147 current_input_column += yyleng; | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3148 |
9476 | 3149 return SUPERCLASSREF; |
3150 } | |
3151 | |
3152 static int | |
3153 handle_meta_identifier (void) | |
3154 { | |
3155 eat_continuation (); | |
3156 | |
3157 std::string pkg; | |
3158 std::string cls = strip_trailing_whitespace (yytext).substr (1); | |
3159 size_t pos = cls.find ("."); | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3160 |
9476 | 3161 if (pos != std::string::npos) |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3162 { |
9476 | 3163 pkg = cls.substr (pos).substr (1); |
3164 cls = cls.substr (0, pos - 1); | |
3165 } | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3166 |
9476 | 3167 int kw_token = is_keyword_token (cls) || is_keyword_token (pkg); |
3168 if (kw_token) | |
3169 { | |
3170 error ("class and package names may not be keywords"); | |
3171 return LEXICAL_ERROR; | |
3172 } | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3173 |
9476 | 3174 yylval.tok_val |
3175 = 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
|
3176 pkg.empty () ? 0 : &(symbol_table::insert (pkg)), |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3177 input_line_number, current_input_column); |
9476 | 3178 |
3179 token_stack.push (yylval.tok_val); | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3180 |
9476 | 3181 lexer_flags.convert_spaces_to_comma = true; |
3182 current_input_column += yyleng; | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3183 |
9476 | 3184 return METAQUERY; |
3185 } | |
3186 | |
767 | 3187 // Figure out exactly what kind of token to return when we have seen |
4238 | 3188 // an identifier. Handles keywords. Return -1 if the identifier |
3189 // should be ignored. | |
767 | 3190 |
146 | 3191 static int |
3974 | 3192 handle_identifier (void) |
146 | 3193 { |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3194 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
|
3195 |
3974 | 3196 std::string tok = strip_trailing_whitespace (yytext); |
3197 | |
3198 int c = yytext[yyleng-1]; | |
3199 | |
3200 int cont_is_spc = eat_continuation (); | |
3201 | |
3202 int spc_gobbled = (cont_is_spc || c == ' ' || c == '\t'); | |
3203 | |
2970 | 3204 // If we are expecting a structure element, avoid recognizing |
3205 // keywords and other special names and return STRUCT_ELT, which is | |
3206 // a string that is also a valid identifier. But first, we have to | |
3207 // decide whether to insert a comma. | |
747 | 3208 |
1826 | 3209 if (lexer_flags.looking_at_indirect_ref) |
1072 | 3210 { |
2970 | 3211 do_comma_insert_check (); |
3212 | |
1072 | 3213 maybe_unput_comma (spc_gobbled); |
2819 | 3214 |
3215 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
|
3216 current_input_column); |
2819 | 3217 |
3218 token_stack.push (yylval.tok_val); | |
3219 | |
2857 | 3220 lexer_flags.quote_is_transpose = true; |
3221 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
|
3222 lexer_flags.looking_for_object_index = true; |
2819 | 3223 |
3224 current_input_column += yyleng; | |
3225 | |
2970 | 3226 return STRUCT_ELT; |
1072 | 3227 } |
747 | 3228 |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3229 lexer_flags.at_beginning_of_statement = false; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3230 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3231 // The is_keyword_token may reset |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3232 // 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
|
3233 // 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
|
3234 // statement. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3235 |
4930 | 3236 int kw_token = is_keyword_token (tok); |
3237 | |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3238 // 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
|
3239 // 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
|
3240 // statement. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3241 |
4930 | 3242 if (lexer_flags.looking_at_function_handle) |
3243 { | |
3244 if (kw_token) | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3245 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3246 error ("function handles may not refer to keywords"); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3247 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3248 return LEXICAL_ERROR; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3249 } |
4930 | 3250 else |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3251 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3252 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
|
3253 current_input_column); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3254 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3255 token_stack.push (yylval.tok_val); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3256 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3257 current_input_column += yyleng; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3258 lexer_flags.quote_is_transpose = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3259 lexer_flags.convert_spaces_to_comma = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3260 lexer_flags.looking_for_object_index = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3261 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3262 return FCN_HANDLE; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3263 } |
4930 | 3264 } |
3265 | |
5102 | 3266 // 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
|
3267 // Keywords can be followed by identifiers. |
146 | 3268 |
3269 if (kw_token) | |
3270 { | |
7722
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3271 if (kw_token >= 0) |
10315
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 current_input_column += yyleng; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3274 lexer_flags.quote_is_transpose = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3275 lexer_flags.convert_spaces_to_comma = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3276 lexer_flags.looking_for_object_index = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3277 } |
7722
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3278 |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3279 return kw_token; |
146 | 3280 } |
3281 | |
1826 | 3282 // See if we have a plot keyword (title, using, with, or clear). |
146 | 3283 |
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
|
3284 int c1 = text_yyinput (); |
3480 | 3285 |
3286 bool next_tok_is_eq = false; | |
3287 if (c1 == '=') | |
3288 { | |
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
|
3289 int c2 = text_yyinput (); |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
3290 xunput (c2, yytext); |
3480 | 3291 |
3292 if (c2 != '=') | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3293 next_tok_is_eq = true; |
3480 | 3294 } |
3295 | |
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8312
diff
changeset
|
3296 xunput (c1, yytext); |
1001 | 3297 |
2702 | 3298 // Kluge alert. |
3299 // | |
3300 // If we are looking at a text style function, set up to gobble its | |
2745 | 3301 // arguments. |
3302 // | |
3303 // If the following token is `=', or if we are parsing a function | |
3189 | 3304 // return list or function parameter list, or if we are looking at |
3305 // something like [ab,cd] = foo (), force the symbol to be inserted | |
3306 // as a variable in the current symbol table. | |
2702 | 3307 |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3308 if (! is_variable (tok)) |
2702 | 3309 { |
10052
5813ec5077b5
don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents:
10048
diff
changeset
|
3310 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
|
3311 && looks_like_command_arg ()) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3312 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3313 BEGIN (COMMAND_START); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3314 } |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3315 else if (next_tok_is_eq |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3316 || lexer_flags.looking_at_decl_list |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3317 || lexer_flags.looking_at_return_list |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3318 || (lexer_flags.looking_at_parameter_list |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3319 && ! lexer_flags.looking_at_initializer_expression)) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3320 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3321 symbol_table::force_variable (tok); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3322 } |
8001
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7898
diff
changeset
|
3323 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
|
3324 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3325 lexer_flags.pending_local_variables.insert (tok); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3326 } |
2702 | 3327 } |
3328 | |
4234 | 3329 // Find the token in the symbol table. Beware the magic |
3330 // transformation of the end keyword... | |
3331 | |
3332 if (tok == "end") | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3333 tok = "__end__"; |
146 | 3334 |
7336 | 3335 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
|
3336 input_line_number, current_input_column); |
7336 | 3337 |
146 | 3338 token_stack.push (yylval.tok_val); |
3339 | |
1826 | 3340 // After seeing an identifer, it is ok to convert spaces to a comma |
3341 // (if needed). | |
146 | 3342 |
2857 | 3343 lexer_flags.convert_spaces_to_comma = true; |
146 | 3344 |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3345 if (! (next_tok_is_eq || YY_START == COMMAND_START)) |
2877 | 3346 { |
3347 lexer_flags.quote_is_transpose = true; | |
146 | 3348 |
2877 | 3349 do_comma_insert_check (); |
3350 | |
3351 maybe_unput_comma (spc_gobbled); | |
146 | 3352 } |
3353 | |
2877 | 3354 current_input_column += yyleng; |
146 | 3355 |
9324
29563379fa9b
don't look for object index after keyword
John W. Eaton <jwe@octave.org>
parents:
8974
diff
changeset
|
3356 if (tok != "__end__") |
29563379fa9b
don't look for object index after keyword
John W. Eaton <jwe@octave.org>
parents:
8974
diff
changeset
|
3357 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
|
3358 |
146 | 3359 return NAME; |
3360 } | |
3361 | |
1826 | 3362 void |
3363 lexical_feedback::init (void) | |
3364 { | |
3365 // Not initially defining a matrix list. | |
3351 | 3366 bracketflag = 0; |
1826 | 3367 |
4613 | 3368 // Not initially defining a cell array list. |
3369 braceflag = 0; | |
3370 | |
1826 | 3371 // Not initially inside a loop or if statement. |
3372 looping = 0; | |
3373 | |
2857 | 3374 // 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
|
3375 defining_func = 0; |
11464
21b5284fa78d
avoid error when parsing nested functions
John W. Eaton <jwe@octave.org>
parents:
11431
diff
changeset
|
3376 |
21b5284fa78d
avoid error when parsing nested functions
John W. Eaton <jwe@octave.org>
parents:
11431
diff
changeset
|
3377 // Not parsing an object index. |
21b5284fa78d
avoid error when parsing nested functions
John W. Eaton <jwe@octave.org>
parents:
11431
diff
changeset
|
3378 while (! parsed_function_name.empty ()) |
21b5284fa78d
avoid error when parsing nested functions
John W. Eaton <jwe@octave.org>
parents:
11431
diff
changeset
|
3379 parsed_function_name.pop (); |
21b5284fa78d
avoid error when parsing nested functions
John W. Eaton <jwe@octave.org>
parents:
11431
diff
changeset
|
3380 |
7336 | 3381 parsing_class_method = false; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
3382 |
9476 | 3383 // Not initially defining a class with classdef. |
3384 maybe_classdef_get_set_method = false; | |
3385 parsing_classdef = false; | |
2857 | 3386 |
4930 | 3387 // Not initiallly looking at a function handle. |
3388 looking_at_function_handle = 0; | |
3389 | |
13237
1bfca2bbea8b
fix parsing of anonymous functions inside cell array lists.
John W. Eaton <jwe@octave.org>
parents:
12801
diff
changeset
|
3390 // 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
|
3391 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
|
3392 |
8701
1652e39b934e
handle command names in declaration lists
John W. Eaton <jwe@octave.org>
parents:
8537
diff
changeset
|
3393 // Not parsing a function return, parameter, or declaration list. |
2857 | 3394 looking_at_return_list = false; |
3395 looking_at_parameter_list = false; | |
8701
1652e39b934e
handle command names in declaration lists
John W. Eaton <jwe@octave.org>
parents:
8537
diff
changeset
|
3396 looking_at_decl_list = false; |
2857 | 3397 |
7634
ae90e05ad299
fix parameter list initializer bug
John W. Eaton <jwe@octave.org>
parents:
7587
diff
changeset
|
3398 // Not looking at an argument list initializer expression. |
ae90e05ad299
fix parameter list initializer bug
John W. Eaton <jwe@octave.org>
parents:
7587
diff
changeset
|
3399 looking_at_initializer_expression = false; |
ae90e05ad299
fix parameter list initializer bug
John W. Eaton <jwe@octave.org>
parents:
7587
diff
changeset
|
3400 |
3796 | 3401 // Not parsing a matrix or the left hand side of multi-value |
3402 // assignment statement. | |
3403 looking_at_matrix_or_assign_lhs = false; | |
3404 | |
4234 | 3405 // Not parsing an object index. |
8745
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
3406 while (! looking_at_object_index.empty ()) |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
3407 looking_at_object_index.pop_front (); |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
3408 |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
3409 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
|
3410 |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
3411 // 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
|
3412 looking_for_object_index = false; |
4234 | 3413 |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3414 // 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
|
3415 at_beginning_of_statement = true; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3416 |
2857 | 3417 // 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
|
3418 // beginning of input. |
2857 | 3419 convert_spaces_to_comma = true; |
3420 do_comma_insert = false; | |
3421 | |
1826 | 3422 // Not initially looking at indirect references. |
2857 | 3423 looking_at_indirect_ref = false; |
1826 | 3424 |
3425 // Quote marks strings intially. | |
2857 | 3426 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
|
3427 |
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7898
diff
changeset
|
3428 // 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
|
3429 pending_local_variables.clear (); |
1826 | 3430 } |
3431 | |
4867 | 3432 bool |
3433 is_keyword (const std::string& s) | |
3434 { | |
5088 | 3435 return octave_kw_hash::in_word_set (s.c_str (), s.length ()) != 0; |
4867 | 3436 } |
3437 | |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3438 DEFUN (iskeyword, args, , |
4264 | 3439 "-*- texinfo -*-\n\ |
11431
0d9640d755b1
Improve docstrings for all isXXX functions.
Rik <octave@nomad.inbox5.com>
parents:
11367
diff
changeset
|
3440 @deftypefn {Built-in Function} {} iskeyword ()\n\ |
0d9640d755b1
Improve docstrings for all isXXX functions.
Rik <octave@nomad.inbox5.com>
parents:
11367
diff
changeset
|
3441 @deftypefnx {Built-in Function} {} iskeyword (@var{name})\n\ |
4264 | 3442 Return true if @var{name} is an Octave keyword. If @var{name}\n\ |
3443 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
|
3444 @seealso{isvarname, exist}\n\ |
4264 | 3445 @end deftypefn") |
3446 { | |
3447 octave_value retval; | |
3448 | |
3449 int argc = args.length () + 1; | |
3450 | |
4867 | 3451 string_vector argv = args.make_argv ("iskeyword"); |
4264 | 3452 |
3453 if (error_state) | |
3454 return retval; | |
3455 | |
3456 if (argc == 1) | |
3457 { | |
3458 string_vector lst (TOTAL_KEYWORDS); | |
3459 | |
3460 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
|
3461 lst[i] = wordlist[i].name; |
4264 | 3462 |
8504
0e0bd07e6ae2
omission from last patch
Jaroslav Hajek <highegg@gmail.com>
parents:
8447
diff
changeset
|
3463 retval = Cell (lst.sort ()); |
4264 | 3464 } |
3465 else if (argc == 2) | |
3466 { | |
4867 | 3467 retval = is_keyword (argv[1]); |
4264 | 3468 } |
3469 else | |
5823 | 3470 print_usage (); |
4264 | 3471 |
3472 return retval; | |
3473 } | |
3474 | |
12801
2837514cf178
codesprint: Add tests for iskeyword() to lex.ll
Rik <octave@nomad.inbox5.com>
parents:
12627
diff
changeset
|
3475 /* |
2837514cf178
codesprint: Add tests for iskeyword() to lex.ll
Rik <octave@nomad.inbox5.com>
parents:
12627
diff
changeset
|
3476 |
2837514cf178
codesprint: Add tests for iskeyword() to lex.ll
Rik <octave@nomad.inbox5.com>
parents:
12627
diff
changeset
|
3477 %!assert (iskeyword ("for")) |
2837514cf178
codesprint: Add tests for iskeyword() to lex.ll
Rik <octave@nomad.inbox5.com>
parents:
12627
diff
changeset
|
3478 %!assert (iskeyword ("fort"), false) |
2837514cf178
codesprint: Add tests for iskeyword() to lex.ll
Rik <octave@nomad.inbox5.com>
parents:
12627
diff
changeset
|
3479 %!assert (iskeyword ("fft"), false) |
2837514cf178
codesprint: Add tests for iskeyword() to lex.ll
Rik <octave@nomad.inbox5.com>
parents:
12627
diff
changeset
|
3480 |
2837514cf178
codesprint: Add tests for iskeyword() to lex.ll
Rik <octave@nomad.inbox5.com>
parents:
12627
diff
changeset
|
3481 */ |
2837514cf178
codesprint: Add tests for iskeyword() to lex.ll
Rik <octave@nomad.inbox5.com>
parents:
12627
diff
changeset
|
3482 |
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
3483 void |
9474
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3484 prep_lexer_for_script_file (void) |
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
3485 { |
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
3486 BEGIN (SCRIPT_FILE_BEGIN); |
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
3487 } |
4264 | 3488 |
9474
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3489 void |
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3490 prep_lexer_for_function_file (void) |
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3491 { |
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3492 BEGIN (FUNCTION_FILE_BEGIN); |
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3493 } |
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3494 |
3388 | 3495 static void |
3496 maybe_warn_separator_insert (char sep) | |
3497 { | |
3523 | 3498 std::string nm = curr_fcn_file_full_name; |
3388 | 3499 |
5794 | 3500 if (nm.empty ()) |
3501 warning_with_id ("Octave:separator-insert", | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3502 "potential auto-insertion of `%c' near line %d", |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3503 sep, input_line_number); |
5794 | 3504 else |
3505 warning_with_id ("Octave:separator-insert", | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3506 "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
|
3507 sep, input_line_number, nm.c_str ()); |
3388 | 3508 } |
3509 | |
3400 | 3510 static void |
3511 gripe_single_quote_string (void) | |
3512 { | |
3523 | 3513 std::string nm = curr_fcn_file_full_name; |
3400 | 3514 |
5794 | 3515 if (nm.empty ()) |
3516 warning_with_id ("Octave:single-quote-string", | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3517 "single quote delimited string near line %d", |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3518 input_line_number); |
5794 | 3519 else |
3520 warning_with_id ("Octave:single-quote-string", | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3521 "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
|
3522 input_line_number, nm.c_str ()); |
3400 | 3523 } |
3524 | |
4037 | 3525 static void |
3526 gripe_matlab_incompatible (const std::string& msg) | |
3527 { | |
8974
fde2a916b2ac
include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents:
8950
diff
changeset
|
3528 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
|
3529 |
fde2a916b2ac
include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents:
8950
diff
changeset
|
3530 if (nm.empty ()) |
fde2a916b2ac
include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents:
8950
diff
changeset
|
3531 warning_with_id ("Octave:matlab-incompatible", |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3532 "potential Matlab compatibility problem: %s", |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3533 msg.c_str ()); |
8974
fde2a916b2ac
include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents:
8950
diff
changeset
|
3534 else |
fde2a916b2ac
include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents:
8950
diff
changeset
|
3535 warning_with_id ("Octave:matlab-incompatible", |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3536 "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
|
3537 msg.c_str (), input_line_number, nm.c_str ()); |
4037 | 3538 } |
3539 | |
3540 static void | |
3541 maybe_gripe_matlab_incompatible_comment (char c) | |
3542 { | |
3543 if (c == '#') | |
3544 gripe_matlab_incompatible ("# used as comment character"); | |
3545 } | |
3546 | |
3547 static void | |
3548 gripe_matlab_incompatible_continuation (void) | |
3549 { | |
3550 gripe_matlab_incompatible ("\\ used as line continuation marker"); | |
3551 } | |
3552 | |
3553 static void | |
3554 gripe_matlab_incompatible_operator (const std::string& op) | |
3555 { | |
3556 std::string t = op; | |
3557 int n = t.length (); | |
3558 if (t[n-1] == '\n') | |
3559 t.resize (n-1); | |
3560 gripe_matlab_incompatible (t + " used as operator"); | |
3561 } | |
3562 | |
7722
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3563 static void |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3564 display_token (int tok) |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3565 { |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3566 switch (tok) |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3567 { |
c3bb0b7a4261
lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3568 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
|
3569 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
|
3570 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
|
3571 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
|
3572 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
|
3573 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
|
3574 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
|
3575 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
|
3576 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
|
3577 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
|
3578 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
|
3579 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
|
3580 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
|
3581 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
|
3582 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
|
3583 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
|
3584 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
|
3585 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
|
3586 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
|
3587 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
|
3588 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
|
3589 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
|
3590 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
|
3591 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
|
3592 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
|
3593 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
|
3594 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
|
3595 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
|
3596 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
|
3597 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
|
3598 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
|
3599 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
|
3600 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
|
3601 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
|
3602 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
|
3603 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
|
3604 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
|
3605 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
|
3606 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
|
3607 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
|
3608 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
|
3609 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
|
3610 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
|
3611 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
|
3612 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
|
3613 |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3614 case NUM: |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3615 case IMAG_NUM: |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3616 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
|
3617 << " [" << yylval.tok_val->number () << "]\n"; |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3618 break; |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3619 |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3620 case STRUCT_ELT: |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3621 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
|
3622 |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3623 case NAME: |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3624 { |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3625 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
|
3626 std::cerr << "NAME"; |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3627 if (sr) |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3628 std::cerr << " [" << sr->name () << "]"; |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
parents:
11464
diff
changeset
|
3629 std::cerr << "\n"; |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
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11464
diff
changeset
|
3630 } |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3631 break; |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3632 |
7722
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diff
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3633 case END: std::cerr << "END\n"; break; |
11466
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3634 |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3635 case DQ_STRING: |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3636 case SQ_STRING: |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3637 std::cerr << (tok == DQ_STRING ? "DQ_STRING" : "SQ_STRING") |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3638 << " [" << yylval.tok_val->text () << "]\n"; |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3639 break; |
1f64a7b73e98
lex.ll (display_tokens): print token values
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3640 |
7722
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3641 case FOR: std::cerr << "FOR\n"; break; |
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3642 case WHILE: std::cerr << "WHILE\n"; break; |
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3643 case DO: std::cerr << "DO\n"; break; |
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3644 case UNTIL: std::cerr << "UNTIL\n"; break; |
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3645 case IF: std::cerr << "IF\n"; break; |
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3646 case ELSEIF: std::cerr << "ELSEIF\n"; break; |
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3647 case ELSE: std::cerr << "ELSE\n"; break; |
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3648 case SWITCH: std::cerr << "SWITCH\n"; break; |
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diff
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3649 case CASE: std::cerr << "CASE\n"; break; |
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3650 case OTHERWISE: std::cerr << "OTHERWISE\n"; break; |
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3651 case BREAK: std::cerr << "BREAK\n"; break; |
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3652 case CONTINUE: std::cerr << "CONTINUE\n"; break; |
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3653 case FUNC_RET: std::cerr << "FUNC_RET\n"; break; |
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3654 case UNWIND: std::cerr << "UNWIND\n"; break; |
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3655 case CLEANUP: std::cerr << "CLEANUP\n"; break; |
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3656 case TRY: std::cerr << "TRY\n"; break; |
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3657 case CATCH: std::cerr << "CATCH\n"; break; |
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3658 case GLOBAL: std::cerr << "GLOBAL\n"; break; |
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3659 case STATIC: std::cerr << "STATIC\n"; break; |
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3660 case FCN_HANDLE: std::cerr << "FCN_HANDLE\n"; break; |
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3661 case END_OF_INPUT: std::cerr << "END_OF_INPUT\n\n"; break; |
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lex.l: allow tokens to be displayed when parsed
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|
3662 case LEXICAL_ERROR: std::cerr << "LEXICAL_ERROR\n\n"; break; |
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lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
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3663 case FCN: std::cerr << "FCN\n"; break; |
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diff
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|
3664 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
|
3665 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
|
3666 case FUNCTION_FILE: std::cerr << "FUNCTION_FILE\n"; break; |
9476 | 3667 case SUPERCLASSREF: std::cerr << "SUPERCLASSREF\n"; break; |
3668 case METAQUERY: std::cerr << "METAQUERY\n"; break; | |
3669 case GET: std::cerr << "GET\n"; break; | |
3670 case SET: std::cerr << "SET\n"; break; | |
3671 case PROPERTIES: std::cerr << "PROPERTIES\n"; break; | |
3672 case METHODS: std::cerr << "METHODS\n"; break; | |
3673 case EVENTS: std::cerr << "EVENTS\n"; break; | |
3674 case CLASSDEF: std::cerr << "CLASSDEF\n"; break; | |
7722
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|
3675 case '\n': std::cerr << "\\n\n"; break; |
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diff
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|
3676 case '\r': std::cerr << "\\r\n"; break; |
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diff
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|
3677 case '\t': std::cerr << "TAB\n"; break; |
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diff
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|
3678 default: |
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diff
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|
3679 { |
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diff
changeset
|
3680 if (tok < 256) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3681 std::cerr << static_cast<char> (tok) << "\n"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
3682 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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10182
diff
changeset
|
3683 std::cerr << "UNKNOWN(" << tok << ")\n"; |
7722
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diff
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|
3684 } |
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|
3685 break; |
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|
3686 } |
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diff
changeset
|
3687 } |
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diff
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|
3688 |
8535 | 3689 static void |
3690 display_state (void) | |
3691 { | |
3692 std::cerr << "S: "; | |
3693 | |
3694 switch (YY_START) | |
3695 { | |
3696 case INITIAL: | |
3697 std::cerr << "INITIAL" << std::endl; | |
3698 break; | |
3699 | |
3700 case COMMAND_START: | |
3701 std::cerr << "COMMAND_START" << std::endl; | |
3702 break; | |
3703 | |
3704 case MATRIX_START: | |
3705 std::cerr << "MATRIX_START" << std::endl; | |
3706 break; | |
3707 | |
3708 case SCRIPT_FILE_BEGIN: | |
3709 std::cerr << "SCRIPT_FILE_BEGIN" << std::endl; | |
3710 break; | |
3711 | |
9474
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3712 case FUNCTION_FILE_BEGIN: |
25ed2d6aacf6
Parse nested functions more accurately.
David Grundberg <individ@acc.umu.se>
parents:
9324
diff
changeset
|
3713 std::cerr << "FUNCTION_FILE_BEGIN" << std::endl; |
8535 | 3714 break; |
3715 | |
3716 default: | |
3717 std::cerr << "UNKNOWN START STATE!" << std::endl; | |
3718 break; | |
3719 } | |
3720 } | |
3721 | |
3722 static void | |
3723 lexer_debug (const char *pattern, const char *text) | |
3724 { | |
3725 std::cerr << std::endl; | |
3726 | |
3727 display_state (); | |
3728 | |
3729 std::cerr << "P: " << pattern << std::endl; | |
3730 std::cerr << "T: " << text << std::endl; | |
3731 } | |
3732 | |
7722
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|
3733 DEFUN (__display_tokens__, args, nargout, |
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|
3734 "-*- texinfo -*-\n\ |
8812
7d48766c21a5
use consistent format for doc strings of internal functions
John W. Eaton <jwe@octave.org>
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8767
diff
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|
3735 @deftypefn {Built-in Function} {} __display_tokens__ ()\n\ |
7722
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3736 Query or set the internal variable that determines whether Octave's\n\ |
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|
3737 lexer displays tokens as they are read.\n\ |
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diff
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|
3738 @end deftypefn") |
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diff
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|
3739 { |
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changeset
|
3740 return SET_INTERNAL_VARIABLE (display_tokens); |
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|
3741 } |
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|
3742 |
4910 | 3743 DEFUN (__token_count__, , , |
3744 "-*- texinfo -*-\n\ | |
8812
7d48766c21a5
use consistent format for doc strings of internal functions
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3745 @deftypefn {Built-in Function} {} __token_count__ ()\n\ |
4910 | 3746 Number of language tokens processed since Octave startup.\n\ |
3747 @end deftypefn") | |
3748 { | |
3749 return octave_value (Vtoken_count); | |
3750 } | |
3751 | |
8535 | 3752 DEFUN (__lexer_debug_flag__, args, nargout, |
8812
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use consistent format for doc strings of internal functions
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|
3753 "-*- texinfo -*-\n\ |
7d48766c21a5
use consistent format for doc strings of internal functions
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diff
changeset
|
3754 @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>
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diff
changeset
|
3755 Undocumented internal function.\n\ |
7d48766c21a5
use consistent format for doc strings of internal functions
John W. Eaton <jwe@octave.org>
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diff
changeset
|
3756 @end deftypefn") |
8535 | 3757 { |
3758 octave_value retval; | |
3759 | |
3760 retval = set_internal_variable (lexer_debug_flag, args, nargout, | |
10315
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untabify src C++ source files
John W. Eaton <jwe@octave.org>
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10182
diff
changeset
|
3761 "__lexer_debug_flag__"); |
8535 | 3762 |
3763 return retval; | |
3764 } |