2 * Copyright (C) 2012, 2013
5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
6 * this software and associated documentation files (the "Software"), to deal in
7 * the Software without restriction, including without limitation the rights to
8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is furnished to do
10 * so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in all
13 * copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 #ifndef GMQCC_LEXER_HDR
24 #define GMQCC_LEXER_HDR
25 typedef struct token_s token;
49 void token_delete(token*);
50 token* token_copy(const token *cp);
51 void token_delete_all(token *t);
52 token* token_copy_all(const token *cp);
59 /* Other tokens which we can return: */
69 TOKEN_KEYWORD, /* loop */
71 TOKEN_DOTS, /* 3 dots, ... */
73 TOKEN_ATTRIBUTE_OPEN, /* [[ */
74 TOKEN_ATTRIBUTE_CLOSE, /* ]] */
76 TOKEN_VA_ARGS, /* for the ftepp only */
77 TOKEN_VA_ARGS_ARRAY, /* for the ftepp only */
78 TOKEN_VA_COUNT, /* to get the count of vaargs */
80 TOKEN_STRINGCONST, /* not the typename but an actual "string" */
89 /* if we add additional tokens before this, the exposed API
90 * should not be broken anyway, but EOF/ERROR/... should
91 * still be at the bottom
95 /* We use '< TOKEN_ERROR', so TOKEN_FATAL must come after it and any
96 * other error related tokens as well
99 TOKEN_FATAL /* internal error, eg out of memory */
107 typedef struct lex_file_s {
109 const char *open_string;
110 size_t open_string_length;
111 size_t open_string_pos;
115 size_t sline; /* line at the start of a token */
123 token tok; /* not a pointer anymore */
127 unsigned nodigraphs:1; /* used when lexing string constants */
128 unsigned preprocessing:1; /* whitespace and EOLs become actual tokens */
129 unsigned mergelines:1; /* backslash at the end of a line escapes the newline */
130 } flags; /* sizeof == 1 */
139 lex_file* lex_open (const char *file);
140 lex_file* lex_open_string(const char *str, size_t len, const char *name);
141 void lex_close(lex_file *lex);
142 int lex_do (lex_file *lex);
143 void lex_cleanup(void);
159 unsigned int operands;
168 * Explicit uint8_t casts since the left operand of shift operator cannot
169 * be negative, even though it won't happen, this supresses the future
172 #define opid1(a) ((uint8_t)a)
173 #define opid2(a,b) (((uint8_t)a<<8) |(uint8_t)b)
174 #define opid3(a,b,c) (((uint8_t)a<<16)|((uint8_t)b<<8)|(uint8_t)c)
176 static const oper_info c_operators[] = {
177 { "(", 0, opid1('('), ASSOC_LEFT, 99, OP_PREFIX, false}, /* paren expression - non function call */
179 { "++", 1, opid3('S','+','+'), ASSOC_LEFT, 17, OP_SUFFIX, false},
180 { "--", 1, opid3('S','-','-'), ASSOC_LEFT, 17, OP_SUFFIX, false},
181 { ".", 2, opid1('.'), ASSOC_LEFT, 17, 0, false},
182 { "(", 0, opid1('('), ASSOC_LEFT, 17, 0, false}, /* function call */
183 { "[", 2, opid1('['), ASSOC_LEFT, 17, 0, false}, /* array subscript */
185 { "++", 1, opid3('+','+','P'), ASSOC_RIGHT, 16, OP_PREFIX, false},
186 { "--", 1, opid3('-','-','P'), ASSOC_RIGHT, 16, OP_PREFIX, false},
188 { "**", 2, opid2('*','*'), ASSOC_RIGHT, 15, 0, true},
190 { "!", 1, opid2('!','P'), ASSOC_RIGHT, 14, OP_PREFIX, true},
191 { "~", 1, opid2('~','P'), ASSOC_RIGHT, 14, OP_PREFIX, true},
192 { "+", 1, opid2('+','P'), ASSOC_RIGHT, 14, OP_PREFIX, false},
193 { "-", 1, opid2('-','P'), ASSOC_RIGHT, 14, OP_PREFIX, true},
194 /* { "&", 1, opid2('&','P'), ASSOC_RIGHT, 14, OP_PREFIX, false}, */
196 { "*", 2, opid1('*'), ASSOC_LEFT, 13, 0, true},
197 { "/", 2, opid1('/'), ASSOC_LEFT, 13, 0, true},
198 { "%", 2, opid1('%'), ASSOC_LEFT, 13, 0, true},
199 { "><", 2, opid2('>','<'), ASSOC_LEFT, 13, 0, true},
201 { "+", 2, opid1('+'), ASSOC_LEFT, 12, 0, true},
202 { "-", 2, opid1('-'), ASSOC_LEFT, 12, 0, true},
204 { "<<", 2, opid2('<','<'), ASSOC_LEFT, 11, 0, true},
205 { ">>", 2, opid2('>','>'), ASSOC_LEFT, 11, 0, true},
207 { "<", 2, opid1('<'), ASSOC_LEFT, 10, 0, false},
208 { ">", 2, opid1('>'), ASSOC_LEFT, 10, 0, false},
209 { "<=>", 2, opid3('<','=','>'), ASSOC_LEFT, 10, 0, true},
210 { "<=", 2, opid2('<','='), ASSOC_LEFT, 10, 0, false},
211 { ">=", 2, opid2('>','='), ASSOC_LEFT, 10, 0, false},
213 { "==", 2, opid2('=','='), ASSOC_LEFT, 9, 0, true},
214 { "!=", 2, opid2('!','='), ASSOC_LEFT, 9, 0, true},
216 { "&", 2, opid1('&'), ASSOC_LEFT, 8, 0, true},
218 { "^", 2, opid1('^'), ASSOC_LEFT, 7, 0, true},
220 { "|", 2, opid1('|'), ASSOC_LEFT, 6, 0, true},
222 { "&&", 2, opid2('&','&'), ASSOC_LEFT, 5, 0, true},
224 { "||", 2, opid2('|','|'), ASSOC_LEFT, 4, 0, true},
226 { "?", 3, opid2('?',':'), ASSOC_RIGHT, 3, 0, true},
228 { "=", 2, opid1('='), ASSOC_RIGHT, 2, 0, false},
229 { "+=", 2, opid2('+','='), ASSOC_RIGHT, 2, 0, false},
230 { "-=", 2, opid2('-','='), ASSOC_RIGHT, 2, 0, false},
231 { "*=", 2, opid2('*','='), ASSOC_RIGHT, 2, 0, false},
232 { "/=", 2, opid2('/','='), ASSOC_RIGHT, 2, 0, false},
233 { "%=", 2, opid2('%','='), ASSOC_RIGHT, 2, 0, false},
234 { ">>=", 2, opid3('>','>','='), ASSOC_RIGHT, 2, 0, false},
235 { "<<=", 2, opid3('<','<','='), ASSOC_RIGHT, 2, 0, false},
236 { "&=", 2, opid2('&','='), ASSOC_RIGHT, 2, 0, false},
237 { "^=", 2, opid2('^','='), ASSOC_RIGHT, 2, 0, false},
238 { "|=", 2, opid2('|','='), ASSOC_RIGHT, 2, 0, false},
240 { ":", 0, opid2(':','?'), ASSOC_RIGHT, 1, 0, false},
242 { ",", 2, opid1(','), ASSOC_LEFT, 0, 0, false}
245 static const oper_info fte_operators[] = {
246 { "(", 0, opid1('('), ASSOC_LEFT, 99, OP_PREFIX, false}, /* paren expression - non function call */
248 { "++", 1, opid3('S','+','+'), ASSOC_LEFT, 15, OP_SUFFIX, false},
249 { "--", 1, opid3('S','-','-'), ASSOC_LEFT, 15, OP_SUFFIX, false},
250 { ".", 2, opid1('.'), ASSOC_LEFT, 15, 0, false},
251 { "(", 0, opid1('('), ASSOC_LEFT, 15, 0, false}, /* function call */
252 { "[", 2, opid1('['), ASSOC_LEFT, 15, 0, false}, /* array subscript */
254 { "!", 1, opid2('!','P'), ASSOC_RIGHT, 14, OP_PREFIX, true},
255 { "+", 1, opid2('+','P'), ASSOC_RIGHT, 14, OP_PREFIX, false},
256 { "-", 1, opid2('-','P'), ASSOC_RIGHT, 14, OP_PREFIX, true},
257 { "++", 1, opid3('+','+','P'), ASSOC_RIGHT, 14, OP_PREFIX, false},
258 { "--", 1, opid3('-','-','P'), ASSOC_RIGHT, 14, OP_PREFIX, false},
260 { "*", 2, opid1('*'), ASSOC_LEFT, 13, 0, true},
261 { "/", 2, opid1('/'), ASSOC_LEFT, 13, 0, true},
262 { "&", 2, opid1('&'), ASSOC_LEFT, 13, 0, true},
263 { "|", 2, opid1('|'), ASSOC_LEFT, 13, 0, true},
265 { "+", 2, opid1('+'), ASSOC_LEFT, 12, 0, true},
266 { "-", 2, opid1('-'), ASSOC_LEFT, 12, 0, true},
268 { "<<", 2, opid2('<','<'), ASSOC_LEFT, 11, 0, true},
269 { ">>", 2, opid2('>','>'), ASSOC_LEFT, 11, 0, true},
271 { "<", 2, opid1('<'), ASSOC_LEFT, 10, 0, false},
272 { ">", 2, opid1('>'), ASSOC_LEFT, 10, 0, false},
273 { "<=", 2, opid2('<','='), ASSOC_LEFT, 10, 0, false},
274 { ">=", 2, opid2('>','='), ASSOC_LEFT, 10, 0, false},
275 { "==", 2, opid2('=','='), ASSOC_LEFT, 10, 0, true},
276 { "!=", 2, opid2('!','='), ASSOC_LEFT, 10, 0, true},
278 { "?", 3, opid2('?',':'), ASSOC_RIGHT, 9, 0, true},
280 { "=", 2, opid1('='), ASSOC_RIGHT, 8, 0, false},
281 { "+=", 2, opid2('+','='), ASSOC_RIGHT, 8, 0, false},
282 { "-=", 2, opid2('-','='), ASSOC_RIGHT, 8, 0, false},
283 { "*=", 2, opid2('*','='), ASSOC_RIGHT, 8, 0, false},
284 { "/=", 2, opid2('/','='), ASSOC_RIGHT, 8, 0, false},
285 { "%=", 2, opid2('%','='), ASSOC_RIGHT, 8, 0, false},
286 { "&=", 2, opid2('&','='), ASSOC_RIGHT, 8, 0, false},
287 { "|=", 2, opid2('|','='), ASSOC_RIGHT, 8, 0, false},
288 { "&~=", 2, opid3('&','~','='), ASSOC_RIGHT, 8, 0, false},
290 { "&&", 2, opid2('&','&'), ASSOC_LEFT, 5, 0, true},
291 { "||", 2, opid2('|','|'), ASSOC_LEFT, 5, 0, true},
293 /* Leave precedence 3 for : with -fcorrect-ternary */
294 { ",", 2, opid1(','), ASSOC_LEFT, 2, 0, false},
295 { ":", 0, opid2(':','?'), ASSOC_RIGHT, 1, 0, false}
298 static const oper_info qcc_operators[] = {
299 { "(", 0, opid1('('), ASSOC_LEFT, 99, OP_PREFIX, false}, /* paren expression - non function call */
301 { ".", 2, opid1('.'), ASSOC_LEFT, 15, 0, false},
302 { "(", 0, opid1('('), ASSOC_LEFT, 15, 0, false}, /* function call */
303 { "[", 2, opid1('['), ASSOC_LEFT, 15, 0, false}, /* array subscript */
305 { "!", 1, opid2('!','P'), ASSOC_RIGHT, 14, OP_PREFIX, true},
306 { "+", 1, opid2('+','P'), ASSOC_RIGHT, 14, OP_PREFIX, false},
307 { "-", 1, opid2('-','P'), ASSOC_RIGHT, 14, OP_PREFIX, true},
309 { "*", 2, opid1('*'), ASSOC_LEFT, 13, 0, true},
310 { "/", 2, opid1('/'), ASSOC_LEFT, 13, 0, true},
311 { "&", 2, opid1('&'), ASSOC_LEFT, 13, 0, true},
312 { "|", 2, opid1('|'), ASSOC_LEFT, 13, 0, true},
314 { "+", 2, opid1('+'), ASSOC_LEFT, 12, 0, true},
315 { "-", 2, opid1('-'), ASSOC_LEFT, 12, 0, true},
317 { "<", 2, opid1('<'), ASSOC_LEFT, 10, 0, false},
318 { ">", 2, opid1('>'), ASSOC_LEFT, 10, 0, false},
319 { "<=", 2, opid2('<','='), ASSOC_LEFT, 10, 0, false},
320 { ">=", 2, opid2('>','='), ASSOC_LEFT, 10, 0, false},
321 { "==", 2, opid2('=','='), ASSOC_LEFT, 10, 0, true},
322 { "!=", 2, opid2('!','='), ASSOC_LEFT, 10, 0, true},
324 { "=", 2, opid1('='), ASSOC_RIGHT, 8, 0, false},
325 { "+=", 2, opid2('+','='), ASSOC_RIGHT, 8, 0, false},
326 { "-=", 2, opid2('-','='), ASSOC_RIGHT, 8, 0, false},
327 { "*=", 2, opid2('*','='), ASSOC_RIGHT, 8, 0, false},
328 { "/=", 2, opid2('/','='), ASSOC_RIGHT, 8, 0, false},
329 { "%=", 2, opid2('%','='), ASSOC_RIGHT, 8, 0, false},
330 { "&=", 2, opid2('&','='), ASSOC_RIGHT, 8, 0, false},
331 { "|=", 2, opid2('|','='), ASSOC_RIGHT, 8, 0, false},
333 { "&&", 2, opid2('&','&'), ASSOC_LEFT, 5, 0, true},
334 { "||", 2, opid2('|','|'), ASSOC_LEFT, 5, 0, true},
336 { ",", 2, opid1(','), ASSOC_LEFT, 2, 0, false},
338 extern const oper_info *operators;
339 extern size_t operator_count;