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970ed795 EL |
1 | /****************************************************************************** |
2 | * Copyright (c) 2000-2014 Ericsson Telecom AB | |
3 | * All rights reserved. This program and the accompanying materials | |
4 | * are made available under the terms of the Eclipse Public License v1.0 | |
5 | * which accompanies this distribution, and is available at | |
6 | * http://www.eclipse.org/legal/epl-v10.html | |
7 | ******************************************************************************/ | |
8 | %option nostack | |
9 | %option noyylineno | |
10 | %option noyywrap | |
11 | %option nounput | |
12 | %option never-interactive | |
13 | %option prefix="pstring_yy" | |
14 | ||
15 | %{ /* ****************** C declarations ***************** */ | |
16 | ||
17 | #include <stdio.h> | |
18 | #include <ctype.h> | |
19 | #include "../error.h" | |
20 | #include "../Identifier.hh" | |
21 | #include "../Int.hh" | |
22 | #include "PatternString.hh" | |
23 | ||
24 | using namespace Ttcn; | |
25 | using namespace Common; | |
26 | ||
27 | /** Adjust location information. | |
28 | * | |
29 | * \c start_index and \c end_index index into \c yytext. | |
30 | * \c current_line and \c current_column index into the actual source line | |
31 | * (only a part of which is in \c yytext). | |
32 | * | |
33 | * UPDATE_LOCATION should be called to "cover" all of yytext. | |
34 | * | |
35 | * @param [in] start_index index into yytext (the first character to consider) | |
36 | * @param [in] end_index index into yytext (one-past) | |
37 | * @param [in,out] current_line | |
38 | * @param [in,out] current_column | |
39 | * */ | |
40 | static void update_location(int start_index, int end_index, | |
41 | int& current_line, int& current_column) | |
42 | { | |
43 | for (int i = start_index; i < yyleng && i < end_index; i++) { | |
44 | // count CR, count LF, but count CR + LF as one | |
45 | switch (yytext[i]) { | |
46 | case '\r': | |
47 | current_line++; | |
48 | current_column = 0; | |
49 | break; | |
50 | case '\n': | |
51 | if (i == 0 || yytext[i - 1] != '\r') { | |
52 | current_line++; | |
53 | current_column = 0; | |
54 | } | |
55 | break; | |
56 | default: | |
57 | current_column++; | |
58 | } | |
59 | } | |
60 | } | |
61 | ||
62 | // This must be side-effect-free ! | |
63 | #define UPDATE_LOCATION(start_index, end_index) \ | |
64 | update_location(start_index, end_index, current_line, current_column) | |
65 | ||
66 | #define YY_DECL static PatternString *yylex(const char *current_file, \ | |
67 | int current_line, int current_column) | |
68 | ||
69 | %} /* ***************** definitions ***************** */ | |
70 | ||
71 | IDENTIFIER [A-Za-z][A-Za-z0-9_]* | |
72 | NUMBER 0|([1-9][0-9]*) | |
73 | WS [ \t\r\n\v\f]* | |
74 | NEWLINE \r|\n|\r\n | |
75 | ||
76 | %% /* ***************** rules ************************* */ | |
77 | ||
78 | bool in_set = false; /* inside a [] */ | |
79 | PatternString* ps = new PatternString(); | |
80 | ||
81 | "{"{WS}{IDENTIFIER}(({WS}\.{WS}{IDENTIFIER})|({WS}\[{WS}({IDENTIFIER}|{NUMBER}){WS}\]))*{WS}"}" { | |
82 | if (in_set) { | |
83 | // in a set a reference (without the \N at start) is just simple text, | |
84 | // the matched token does not contain characters that are special in a set | |
85 | ps->addString(yytext); | |
86 | UPDATE_LOCATION(0, yyleng); | |
87 | } else { | |
88 | vector<string> identifiers; | |
89 | vector<int> beginnings; | |
90 | ||
91 | const char * beg = yytext; | |
92 | const char * end = 0; | |
93 | int id_begin = 0; // the first alphanumeric character of an identifier | |
94 | for (;;) { | |
95 | while (isspace(*++beg) || (*beg=='[') ) ; // skip whitespace and [ | |
96 | int *current_begin = new int(beg - yytext); | |
97 | if (!id_begin) id_begin = *current_begin; | |
98 | end = beg; | |
99 | while (isalnum(*++end) || *end=='_') ; // scan for the end of identifier | |
100 | ||
101 | string* identifier = new string(end-beg, beg); | |
102 | identifiers.add(identifier); | |
103 | beginnings .add(current_begin); | |
104 | ||
105 | beg = end; // end remembers the position before the whitespace | |
106 | while (isspace(*beg) || (*beg==']') ) ++beg; // skip whitespace and ] | |
107 | if (*beg=='}') break; | |
108 | } | |
109 | ||
110 | size_t num_id = identifiers.size(); | |
111 | bool error = false; | |
112 | Ttcn::Reference *ref = 0; | |
113 | int last = 0; // last "consumed" index into yytext | |
114 | int old_column = 0, old_line = 0; // the beginning of the entire reference | |
115 | ||
116 | for (size_t i = 0; i < num_id; ++i) { | |
117 | const string & id_str = *identifiers[i]; | |
118 | const int & id_beg = *beginnings [i]; | |
119 | if (Identifier::is_reserved_word(id_str, Identifier::ID_TTCN)) { | |
120 | UPDATE_LOCATION(last, id_beg); // consume before identifier | |
121 | int first_line = current_line, first_column = current_column; | |
122 | UPDATE_LOCATION(id_beg, id_beg+id_str.size()); // consume identifier | |
123 | Location loc(current_file, first_line, first_column, current_line, | |
124 | current_column); // location covers the identifier | |
125 | UPDATE_LOCATION(id_beg+id_str.size(), yyleng); // consume to end | |
126 | loc.error("Invalid reference expression: `%s' is a reserved word in TTCN-3", | |
127 | id_str.c_str()); | |
128 | error = true; | |
129 | break; | |
130 | } else if (in_set) { | |
131 | UPDATE_LOCATION(last, id_beg); // consume before identifier | |
132 | break; | |
133 | } else { | |
134 | if (i==0) { | |
135 | UPDATE_LOCATION(0, id_begin); // consume before identifier | |
136 | old_column = current_column; old_line = current_line; | |
137 | ref = new Ttcn::Reference(new Identifier(Identifier::ID_TTCN, id_str)); | |
138 | UPDATE_LOCATION(id_begin, last = id_begin + id_str.size()); | |
139 | } else { | |
140 | UPDATE_LOCATION(last, id_beg); | |
141 | Location loc(current_file, current_line, current_column, current_line, | |
142 | current_column + id_str.size()); | |
143 | UPDATE_LOCATION(id_beg, last = id_beg + id_str.size()); | |
144 | ||
145 | int temp_i; | |
146 | FieldOrArrayRef *fieldref = 0; | |
147 | ||
148 | if(1 != sscanf( (id_str.c_str()), "%d", &temp_i)){ | |
149 | fieldref = new FieldOrArrayRef(new Identifier(Identifier::ID_TTCN, id_str)); | |
150 | } | |
151 | else { | |
152 | int_val_t* temp_intvalt = new int_val_t(temp_i); | |
153 | Value* temp_value = new Value(Value::V_INT, temp_intvalt); | |
154 | fieldref = new FieldOrArrayRef(temp_value); | |
155 | } | |
156 | if (ref) { | |
157 | ref->set_location(loc); | |
158 | ref->add(fieldref); | |
159 | } else { | |
160 | loc.error("Invalid reference expression"); | |
161 | } | |
162 | } | |
163 | } | |
164 | } // next i | |
165 | ||
166 | if (error) { | |
167 | delete ref; // safe even if NULL | |
168 | } else { | |
169 | UPDATE_LOCATION(last, yyleng); // consume to the end | |
170 | Location loc(current_file, old_line, old_column, current_line, current_column); | |
171 | if (ref) { | |
172 | ref->set_location(loc); | |
173 | ps->addRef(ref); | |
174 | } else { | |
175 | loc.error("Invalid reference expression"); | |
176 | } | |
177 | } | |
178 | ||
179 | // cleanup (can't be done in the second loop because it may end early) | |
180 | for (size_t i = 0; i < num_id; ++i) { | |
181 | delete identifiers[i]; | |
182 | delete beginnings [i]; | |
183 | } | |
184 | identifiers.clear(); | |
185 | beginnings .clear(); | |
186 | } //else | |
187 | } | |
188 | ||
189 | "{"[^}]*"}" { | |
190 | int first_line = current_line, first_column = current_column; | |
191 | UPDATE_LOCATION(0, yyleng); | |
192 | Location loc(current_file, first_line, first_column, current_line, | |
193 | current_column); | |
194 | loc.error("Invalid reference expression: `%s'", yytext); | |
195 | } | |
196 | ||
197 | "\\N"{WS}"{"{WS}{IDENTIFIER}{WS}"}" { | |
198 | int id_begin = 3; | |
199 | while (!isalpha(yytext[id_begin])) id_begin++; | |
200 | int id_len = 1; | |
201 | while (isalnum(yytext[id_begin + id_len]) || yytext[id_begin + id_len] == '_') | |
202 | id_len++; | |
203 | string id_str(id_len, yytext + id_begin); | |
204 | /* | |
205 | Ttcn::Reference *ref = new Ttcn::Reference(new Identifier( | |
206 | Identifier::ID_TTCN, id_str)); | |
207 | ref->set_location(loc); | |
208 | ps->addRefdCharSet(ref); | |
209 | */ | |
210 | int first_line = current_line, first_column = current_column; | |
211 | UPDATE_LOCATION(0, yyleng); | |
212 | Location loc(current_file, first_line, first_column, current_line, | |
213 | current_column); | |
214 | if (Identifier::is_reserved_word(id_str, Identifier::ID_TTCN)) { | |
215 | loc.error("Invalid character set reference: `%s' is a reserved word in " | |
216 | "TTCN-3", id_str.c_str()); | |
217 | } else if (in_set) { | |
218 | loc.warning("Character set reference `\\N{%s}' is not supported, " | |
219 | "dropped out from the set", id_str.c_str()); | |
220 | } else { | |
221 | loc.warning("Character set reference `\\N{%s}' is not supported, " | |
222 | "substituted with `?'", id_str.c_str()); | |
223 | ps->addChar('?'); | |
224 | } | |
225 | } | |
226 | ||
227 | "\\N"{WS}"{"[^}]*"}" { | |
228 | int first_line = current_line, first_column = current_column; | |
229 | UPDATE_LOCATION(0, yyleng); | |
230 | Location loc(current_file, first_line, first_column, current_line, | |
231 | current_column); | |
232 | loc.error("Invalid character set reference: `%s'", yytext); | |
233 | } | |
234 | ||
235 | "\\q"{WS}"{"{WS}{NUMBER}{WS}","{WS}{NUMBER}{WS}","{WS}{NUMBER}{WS}","{WS}{NUMBER}{WS}"}" { | |
236 | int group_begin = 3; | |
237 | while (!isdigit(yytext[group_begin])) group_begin++; | |
238 | UPDATE_LOCATION(0, group_begin); | |
239 | int group_len = 1; | |
240 | while (isdigit(yytext[group_begin + group_len])) group_len++; | |
241 | string group_str(group_len, yytext + group_begin); | |
242 | Location group_loc(current_file, current_line, current_column, current_line, | |
243 | current_column + group_len); | |
244 | Int group = string2Int(group_str, group_loc); | |
245 | if (group < 0 || group > 127) { | |
246 | group_loc.error("The first number of quadruple (group) must be within " | |
247 | "the range 0 .. 127 instead of %s", Int2string(group).c_str()); | |
248 | group = group < 0 ? 0 : 127; | |
249 | } | |
250 | int plane_begin = group_begin + group_len + 1; | |
251 | while (!isdigit(yytext[plane_begin])) plane_begin++; | |
252 | UPDATE_LOCATION(group_begin, plane_begin); | |
253 | int plane_len = 1; | |
254 | while (isdigit(yytext[plane_begin + plane_len])) plane_len++; | |
255 | string plane_str(plane_len, yytext + plane_begin); | |
256 | Location plane_loc(current_file, current_line, current_column, current_line, | |
257 | current_column + plane_len); | |
258 | Int plane = string2Int(plane_str, plane_loc); | |
259 | if (plane < 0 || plane > 255) { | |
260 | plane_loc.error("The second number of quadruple (plane) must be within " | |
261 | "the range 0 .. 255 instead of %s", Int2string(plane).c_str()); | |
262 | plane = plane < 0 ? 0 : 255; | |
263 | } | |
264 | int row_begin = plane_begin + plane_len + 1; | |
265 | while (!isdigit(yytext[row_begin])) row_begin++; | |
266 | UPDATE_LOCATION(plane_begin, row_begin); | |
267 | int row_len = 1; | |
268 | while (isdigit(yytext[row_begin + row_len])) row_len++; | |
269 | string row_str(row_len, yytext + row_begin); | |
270 | Location row_loc(current_file, current_line, current_column, current_line, | |
271 | current_column + row_len); | |
272 | Int row = string2Int(row_str, row_loc); | |
273 | if (row < 0 || row > 255) { | |
274 | row_loc.error("The third number of quadruple (row) must be within " | |
275 | "the range 0 .. 255 instead of %s", Int2string(row).c_str()); | |
276 | row = row < 0 ? 0 : 255; | |
277 | } | |
278 | int cell_begin = row_begin + row_len + 1; | |
279 | while (!isdigit(yytext[cell_begin])) cell_begin++; | |
280 | UPDATE_LOCATION(row_begin, cell_begin); | |
281 | int cell_len = 1; | |
282 | while (isdigit(yytext[cell_begin + cell_len])) cell_len++; | |
283 | string cell_str(cell_len, yytext + cell_begin); | |
284 | Location cell_loc(current_file, current_line, current_column, current_line, | |
285 | current_column + cell_len); | |
286 | Int cell = string2Int(cell_str, cell_loc); | |
287 | if (cell < 0 || cell > 255) { | |
288 | cell_loc.error("The fourth number of quadruple (cell) must be within " | |
289 | "the range 0 .. 255 instead of %s", Int2string(cell).c_str()); | |
290 | cell = cell < 0 ? 0 : 255; | |
291 | } | |
292 | bool add_quadruple = true; | |
293 | if (group == 0 && plane == 0 && row == 0) { | |
294 | if (isprint(cell)) { | |
295 | switch (cell) { | |
296 | case '-': | |
297 | case '^': | |
298 | if (!in_set) break; | |
299 | case '?': | |
300 | case '*': | |
301 | case '\\': | |
302 | case '[': | |
303 | case ']': | |
304 | case '{': | |
305 | case '}': | |
306 | case '"': | |
307 | case '|': | |
308 | case '(': | |
309 | case ')': | |
310 | case '#': | |
311 | case '+': | |
312 | ps->addChar('\\'); | |
313 | default: | |
314 | break; | |
315 | } | |
316 | ps->addChar(cell); | |
317 | add_quadruple = false; | |
318 | } else { | |
319 | switch (cell) { | |
320 | case '\t': | |
321 | ps->addString("\\t"); | |
322 | add_quadruple = false; | |
323 | break; | |
324 | case '\r': | |
325 | ps->addString("\\r"); | |
326 | add_quadruple = false; | |
327 | } | |
328 | } | |
329 | } | |
330 | if (add_quadruple) { | |
331 | ps->addString("\\q{" + Int2string(group) + "," + Int2string(plane) + "," + | |
332 | Int2string(row) + "," + Int2string(cell) + "}"); | |
333 | } | |
334 | UPDATE_LOCATION(cell_begin, yyleng); | |
335 | } | |
336 | ||
337 | "\\q"({WS}"{"[^}]*"}")? { | |
338 | int first_line = current_line, first_column = current_column; | |
339 | UPDATE_LOCATION(0, yyleng); | |
340 | Location loc(current_file, first_line, first_column, current_line, | |
341 | current_column); | |
342 | loc.error("Invalid quadruple notation: `%s'", yytext); | |
343 | } | |
344 | ||
345 | "[]" { | |
346 | if(in_set) { | |
347 | ps->addString("\\[]"); | |
348 | in_set = false; | |
349 | } else { | |
350 | ps->addString("[\\]"); | |
351 | in_set = true; | |
352 | } | |
353 | current_column += 2; | |
354 | } | |
355 | ||
356 | "[^]" { | |
357 | if(in_set) { | |
358 | ps->addString("\\[\\^]"); | |
359 | in_set = false; | |
360 | } else { | |
361 | ps->addString("[^\\]"); | |
362 | in_set = true; | |
363 | } | |
364 | current_column += 3; | |
365 | } | |
366 | ||
367 | "[" { | |
368 | if(in_set) { | |
369 | ps->addString("\\["); | |
370 | } else { | |
371 | ps->addChar('['); | |
372 | in_set = true; | |
373 | } | |
374 | current_column++; | |
375 | } | |
376 | ||
377 | "]" { | |
378 | if (in_set) { | |
379 | ps->addChar(']'); | |
380 | in_set = false; | |
381 | } else { | |
382 | Location loc(current_file, current_line, current_column, current_line, | |
383 | current_column + 1); | |
384 | loc.error("Unmatched `]'. Did you mean `\\]'?"); | |
385 | ps->addString("\\]"); | |
386 | } | |
387 | current_column++; | |
388 | } | |
389 | ||
390 | "{"|"}" { | |
391 | Location loc(current_file, current_line, current_column, current_line, | |
392 | current_column + 1); | |
393 | loc.warning("Unmatched `%c' was treated literally", yytext[0]); | |
394 | ps->addChar('\\'); | |
395 | ps->addChar(yytext[0]); | |
396 | current_column++; | |
397 | } | |
398 | ||
399 | "\\\""|"\"\"" { | |
400 | ps->addChar('"'); | |
401 | current_column += 2; | |
402 | } | |
403 | /* \metachars and escaped metachars */ | |
404 | \\[dwtnrsb?*\\\[\]\-\^|()#+] { | |
405 | ps->addString(yytext); | |
406 | current_column += 2; | |
407 | } | |
408 | ||
409 | "\\"(.|{NEWLINE}) { | |
410 | int first_line = current_line, first_column = current_column; | |
411 | UPDATE_LOCATION(0, yyleng); | |
412 | Location loc(current_file, first_line, first_column, current_line, | |
413 | current_column); | |
414 | if (isprint((unsigned char)yytext[1])) | |
415 | loc.warning("Use of unrecognized escape sequence `\\%c' is deprecated", | |
416 | yytext[1]); | |
417 | else loc.warning("Use of unrecognized escape sequence is deprecated"); | |
418 | ps->addString(yytext + 1); | |
419 | } | |
420 | ||
421 | "#"{WS}[0-9] { | |
422 | int first_line = current_line, first_column = current_column; | |
423 | UPDATE_LOCATION(0, yyleng); | |
424 | if (in_set) { | |
425 | Location loc(current_file, first_line, first_column, current_line, | |
426 | current_column); | |
427 | loc.error("Number of repetitions `#n' cannot be given inside a set " | |
428 | "expression"); | |
429 | } else if (yytext[yyleng - 1] != '1') { | |
430 | ps->addChar('#'); | |
431 | ps->addChar(yytext[yyleng - 1]); | |
432 | } | |
433 | } | |
434 | ||
435 | "#"{WS}"("{WS}{NUMBER}{WS}")" { | |
436 | if (in_set) { | |
437 | int first_line = current_line, first_column = current_column; | |
438 | UPDATE_LOCATION(0, yyleng); | |
439 | Location loc(current_file, first_line, first_column, current_line, | |
440 | current_column); | |
441 | loc.error("Number of repetitions `#(n)' cannot be given inside a set " | |
442 | "expression"); | |
443 | } else { | |
444 | int number_begin = 2; | |
445 | while (!isdigit(yytext[number_begin])) number_begin++; | |
446 | UPDATE_LOCATION(0, number_begin); | |
447 | int number_len = 1; | |
448 | while (isdigit(yytext[number_begin + number_len])) number_len++; | |
449 | string number_str(number_len, yytext + number_begin); | |
450 | Location number_loc(current_file, current_line, current_column, | |
451 | current_line, current_column + number_len); | |
452 | UPDATE_LOCATION(number_begin, yyleng); | |
453 | Int number = string2Int(number_str, number_loc); | |
454 | if (number < 0) { | |
455 | number_loc.error("A non-negative integer value was expected as the " | |
456 | "number of repetitions instead of %s", Int2string(number).c_str()); | |
457 | } else if (number != 1) ps->addString("#(" + Int2string(number) + ")"); | |
458 | } | |
459 | } | |
460 | ||
461 | "#"{WS}"("{WS}{NUMBER}{WS}","{WS}{NUMBER}{WS}")" { | |
462 | int first_line = current_line, first_column = current_column; | |
463 | if (in_set) { | |
464 | UPDATE_LOCATION(0, yyleng); | |
465 | Location loc(current_file, first_line, first_column, current_line, | |
466 | current_column); | |
467 | loc.error("Number of repetitions `#(n,m)' cannot be given inside a set " | |
468 | "expression"); | |
469 | } else { | |
470 | int lower_begin = 2; | |
471 | while (!isdigit(yytext[lower_begin])) lower_begin++; | |
472 | UPDATE_LOCATION(0, lower_begin); | |
473 | int lower_len = 1; | |
474 | while (isdigit(yytext[lower_begin + lower_len])) lower_len++; | |
475 | string lower_str(lower_len, yytext + lower_begin); | |
476 | Location lower_loc(current_file, current_line, current_column, | |
477 | current_line, current_column + lower_len); | |
478 | Int lower = string2Int(lower_str, lower_loc); | |
479 | if (lower < 0) { | |
480 | lower_loc.error("A non-negative integer value was expected as the " | |
481 | "minimum number of repetitions instead of %s", | |
482 | Int2string(lower).c_str()); | |
483 | lower = 0; | |
484 | } | |
485 | int upper_begin = lower_begin + lower_len + 1; | |
486 | while (!isdigit(yytext[upper_begin])) upper_begin++; | |
487 | UPDATE_LOCATION(lower_begin, upper_begin); | |
488 | int upper_len = 1; | |
489 | while (isdigit(yytext[upper_begin + upper_len])) upper_len++; | |
490 | string upper_str(upper_len, yytext + upper_begin); | |
491 | Location upper_loc(current_file, current_line, current_column, | |
492 | current_line, current_column + upper_len); | |
493 | UPDATE_LOCATION(upper_begin, yyleng); | |
494 | Int upper = string2Int(upper_str, upper_loc); | |
495 | if (upper < 0) { | |
496 | upper_loc.error("A non-negative integer value was expected as the " | |
497 | "maximum number of repetitions instead of %s", | |
498 | Int2string(upper).c_str()); | |
499 | } else if (lower > upper) { | |
500 | Location loc(current_file, first_line, first_column, current_line, | |
501 | current_column); | |
502 | loc.error("The lower bound is higher than the upper bound in the number " | |
503 | "of repetitions: `#(%s,%s)'", Int2string(lower).c_str(), | |
504 | Int2string(upper).c_str()); | |
505 | } else if (lower == upper) { | |
506 | if (lower != 1) ps->addString("#(" + Int2string(lower) + ")"); | |
507 | } else { | |
508 | if (lower == 0) ps->addString("#(," + Int2string(upper) + ")"); | |
509 | else ps->addString("#(" + Int2string(lower) + "," + Int2string(upper) + | |
510 | ")"); | |
511 | } | |
512 | } | |
513 | } | |
514 | ||
515 | "#"{WS}"("{WS}{NUMBER}{WS}","{WS}")" { | |
516 | if (in_set) { | |
517 | int first_line = current_line, first_column = current_column; | |
518 | UPDATE_LOCATION(0, yyleng); | |
519 | Location loc(current_file, first_line, first_column, current_line, | |
520 | current_column); | |
521 | loc.error("Number of repetitions `#(n,)' cannot be given inside a set " | |
522 | "expression"); | |
523 | } else { | |
524 | int lower_begin = 2; | |
525 | while (!isdigit(yytext[lower_begin])) lower_begin++; | |
526 | UPDATE_LOCATION(0, lower_begin); | |
527 | int lower_len = 1; | |
528 | while (isdigit(yytext[lower_begin + lower_len])) lower_len++; | |
529 | string lower_str(lower_len, yytext + lower_begin); | |
530 | Location lower_loc(current_file, current_line, current_column, | |
531 | current_line, current_column + lower_len); | |
532 | UPDATE_LOCATION(lower_begin, yyleng); | |
533 | Int lower = string2Int(lower_str, lower_loc); | |
534 | if (lower < 0) { | |
535 | lower_loc.error("A non-negative integer value was expected as the " | |
536 | "minimum number of repetitions instead of %s", | |
537 | Int2string(lower).c_str()); | |
538 | } else if (lower == 1) ps->addChar('+'); | |
539 | else ps->addString("#(" + Int2string(lower) + ",)"); | |
540 | } | |
541 | } | |
542 | ||
543 | "#"{WS}"("{WS}","{WS}{NUMBER}{WS}")" { | |
544 | if (in_set) { | |
545 | int first_line = current_line, first_column = current_column; | |
546 | UPDATE_LOCATION(0, yyleng); | |
547 | Location loc(current_file, first_line, first_column, current_line, | |
548 | current_column); | |
549 | loc.error("Number of repetitions `#(,m)' cannot be given inside a set " | |
550 | "expression"); | |
551 | } else { | |
552 | int upper_begin = 3; | |
553 | while (!isdigit(yytext[upper_begin])) upper_begin++; | |
554 | UPDATE_LOCATION(0, upper_begin); | |
555 | int upper_len = 1; | |
556 | while (isdigit(yytext[upper_begin + upper_len])) upper_len++; | |
557 | string upper_str(upper_len, yytext + upper_begin); | |
558 | Location upper_loc(current_file, current_line, current_column, | |
559 | current_line, current_column + upper_len); | |
560 | UPDATE_LOCATION(upper_begin, yyleng); | |
561 | Int upper = string2Int(upper_str, upper_loc); | |
562 | if (upper < 0) { | |
563 | upper_loc.error("A non-negative integer value was expected as the " | |
564 | "maximum number of repetitions instead of %s", | |
565 | Int2string(upper).c_str()); | |
566 | } else ps->addString("#(," + Int2string(upper) + ")"); | |
567 | } | |
568 | } | |
569 | ||
570 | "#"{WS}"("{WS}","{WS}")" { | |
571 | int first_line = current_line, first_column = current_column; | |
572 | UPDATE_LOCATION(0, yyleng); | |
573 | if (in_set) { | |
574 | Location loc(current_file, first_line, first_column, current_line, | |
575 | current_column); | |
576 | loc.error("Number of repetitions `#(,)' cannot be given inside a set " | |
577 | "expression"); | |
578 | } else ps->addString("#(,)"); | |
579 | } | |
580 | ||
581 | "#"{WS}"("[^)]*")" { | |
582 | int first_line = current_line, first_column = current_column; | |
583 | UPDATE_LOCATION(0, yyleng); | |
584 | Location loc(current_file, first_line, first_column, current_line, | |
585 | current_column); | |
586 | loc.error("Invalid notation for the number of repetitions: `%s'", yytext); | |
587 | } | |
588 | ||
589 | "#" { | |
590 | Location loc(current_file, current_line, current_column, current_line, | |
591 | current_column + 1); | |
592 | if (in_set) { | |
593 | loc.warning("Unescaped `#' inside character set was treated literally"); | |
594 | ps->addChar('\\'); | |
595 | ps->addChar('#'); | |
596 | } else { | |
597 | loc.error("Syntax error in the number of repetitions `#...'"); | |
598 | } | |
599 | current_column++; | |
600 | } | |
601 | ||
602 | "+" { | |
603 | if (in_set) { | |
604 | Location loc(current_file, current_line, current_column, current_line, | |
605 | current_column + 1); | |
606 | loc.warning("Unescaped `+' inside character set was treated literally"); | |
607 | ps->addChar('\\'); | |
608 | } | |
609 | ps->addChar('+'); | |
610 | current_column++; | |
611 | } | |
612 | ||
613 | .|{NEWLINE} { | |
614 | ps->addString(yytext); | |
615 | UPDATE_LOCATION(0, yyleng); | |
616 | } | |
617 | ||
618 | <<EOF>> { | |
619 | if (in_set) { | |
620 | Location loc(current_file, current_line, current_column, current_line, | |
621 | current_column + 1); | |
622 | loc.error("Missing `]' at the end of the string"); | |
623 | ps->addChar(']'); | |
624 | } | |
625 | return ps; | |
626 | } | |
627 | ||
628 | %% | |
629 | ||
630 | PatternString* parse_pattern(const char *str, const Location& p_loc) | |
631 | { | |
632 | Error_Context cntxt(&p_loc, "In character string pattern"); | |
633 | struct yy_buffer_state *flex_buffer=pstring_yy_scan_string(str); | |
634 | if (!flex_buffer) { | |
635 | FATAL_ERROR("parse_pattern(): flex buffer creation failed"); | |
636 | return 0; | |
637 | } | |
638 | ||
639 | PatternString *ps = yylex(p_loc.get_filename(), p_loc.get_first_line(), | |
640 | p_loc.get_first_column() + 1); | |
641 | pstring_yylex_destroy(); | |
642 | ||
643 | return ps; | |
644 | } |