2 * Copyright (C) 2012, 2013
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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},
200 { "+", 2, opid1('+'), ASSOC_LEFT, 12, 0, true},
201 { "-", 2, opid1('-'), ASSOC_LEFT, 12, 0, true},
203 { "<<", 2, opid2('<','<'), ASSOC_LEFT, 11, 0, true},
204 { ">>", 2, opid2('>','>'), ASSOC_LEFT, 11, 0, true},
206 { "<", 2, opid1('<'), ASSOC_LEFT, 10, 0, false},
207 { ">", 2, opid1('>'), ASSOC_LEFT, 10, 0, false},
208 { "<=>", 2, opid3('<','=','>'), ASSOC_LEFT, 10, 0, true},
209 { "<=", 2, opid2('<','='), ASSOC_LEFT, 10, 0, false},
210 { ">=", 2, opid2('>','='), ASSOC_LEFT, 10, 0, false},
212 { "==", 2, opid2('=','='), ASSOC_LEFT, 9, 0, false},
213 { "!=", 2, opid2('!','='), ASSOC_LEFT, 9, 0, false},
215 { "&", 2, opid1('&'), ASSOC_LEFT, 8, 0, true},
217 { "^", 2, opid1('^'), ASSOC_LEFT, 7, 0, true},
219 { "|", 2, opid1('|'), ASSOC_LEFT, 6, 0, true},
221 { "&&", 2, opid2('&','&'), ASSOC_LEFT, 5, 0, true},
223 { "||", 2, opid2('|','|'), ASSOC_LEFT, 4, 0, true},
225 { "?", 3, opid2('?',':'), ASSOC_RIGHT, 3, 0, true},
227 { "=", 2, opid1('='), ASSOC_RIGHT, 2, 0, false},
228 { "+=", 2, opid2('+','='), 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, true},
232 { "%=", 2, opid2('%','='), ASSOC_RIGHT, 2, 0, false},
233 { ">>=", 2, opid3('>','>','='), ASSOC_RIGHT, 2, 0, false},
234 { "<<=", 2, opid3('<','<','='), ASSOC_RIGHT, 2, 0, false},
235 { "&=", 2, opid2('&','='), ASSOC_RIGHT, 2, 0, false},
236 { "^=", 2, opid2('^','='), ASSOC_RIGHT, 2, 0, false},
237 { "|=", 2, opid2('|','='), ASSOC_RIGHT, 2, 0, false},
238 { "&~=", 2, opid3('&','~','='), ASSOC_RIGHT, 2, 0, false},
240 { ":", 0, opid2(':','?'), ASSOC_RIGHT, 1, 0, false},
242 { ",", 2, opid1(','), ASSOC_LEFT, 0, 0, false}
244 static const size_t c_operator_count = (sizeof(c_operators) / sizeof(c_operators[0]));
246 static const oper_info fte_operators[] = {
247 { "(", 0, opid1('('), ASSOC_LEFT, 99, OP_PREFIX, false}, /* paren expression - non function call */
249 { "++", 1, opid3('S','+','+'), ASSOC_LEFT, 15, OP_SUFFIX, false},
250 { "--", 1, opid3('S','-','-'), ASSOC_LEFT, 15, OP_SUFFIX, false},
251 { ".", 2, opid1('.'), ASSOC_LEFT, 15, 0, false},
252 { "(", 0, opid1('('), ASSOC_LEFT, 15, 0, false}, /* function call */
253 { "[", 2, opid1('['), ASSOC_LEFT, 15, 0, false}, /* array subscript */
255 { "!", 1, opid2('!', 'P'), ASSOC_RIGHT, 14, OP_PREFIX, true},
256 { "+", 1, opid2('+','P'), ASSOC_RIGHT, 14, OP_PREFIX, false},
257 { "-", 1, opid2('-','P'), ASSOC_RIGHT, 14, OP_PREFIX, true},
258 { "++", 1, opid3('+','+','P'), ASSOC_RIGHT, 14, OP_PREFIX, false},
259 { "--", 1, opid3('-','-','P'), ASSOC_RIGHT, 14, OP_PREFIX, false},
261 { "*", 2, opid1('*'), ASSOC_LEFT, 13, 0, true},
262 { "/", 2, opid1('/'), ASSOC_LEFT, 13, 0, true},
263 { "&", 2, opid1('&'), ASSOC_LEFT, 13, 0, true},
264 { "|", 2, opid1('|'), ASSOC_LEFT, 13, 0, true},
266 { "+", 2, opid1('+'), ASSOC_LEFT, 12, 0, true},
267 { "-", 2, opid1('-'), ASSOC_LEFT, 12, 0, true},
269 { "<<", 2, opid2('<','<'), ASSOC_LEFT, 11, 0, true},
270 { ">>", 2, opid2('>','>'), ASSOC_LEFT, 11, 0, true},
272 { "<", 2, opid1('<'), ASSOC_LEFT, 10, 0, false},
273 { ">", 2, opid1('>'), ASSOC_LEFT, 10, 0, false},
274 { "<=", 2, opid2('<','='), ASSOC_LEFT, 10, 0, false},
275 { ">=", 2, opid2('>','='), ASSOC_LEFT, 10, 0, false},
276 { "==", 2, opid2('=','='), ASSOC_LEFT, 10, 0, false},
277 { "!=", 2, opid2('!','='), ASSOC_LEFT, 10, 0, false},
279 { "?", 3, opid2('?',':'), ASSOC_RIGHT, 9, 0, true},
281 { "=", 2, opid1('='), 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, true},
286 { "%=", 2, opid2('%','='), ASSOC_RIGHT, 8, 0, false},
287 { "&=", 2, opid2('&','='), ASSOC_RIGHT, 8, 0, false},
288 { "|=", 2, opid2('|','='), ASSOC_RIGHT, 8, 0, false},
289 { "&~=", 2, opid3('&','~','='), ASSOC_RIGHT, 8, 0, false},
291 { "&&", 2, opid2('&','&'), ASSOC_LEFT, 5, 0, true},
292 { "||", 2, opid2('|','|'), ASSOC_LEFT, 5, 0, true},
294 /* Leave precedence 3 for : with -fcorrect-ternary */
295 { ",", 2, opid1(','), ASSOC_LEFT, 2, 0, false},
296 { ":", 0, opid2(':','?'), ASSOC_RIGHT, 1, 0, false}
298 static const size_t fte_operator_count = (sizeof(fte_operators) / sizeof(fte_operators[0]));
300 static const oper_info qcc_operators[] = {
301 { "(", 0, opid1('('), ASSOC_LEFT, 99, OP_PREFIX, false}, /* paren expression - non function call */
303 { ".", 2, opid1('.'), ASSOC_LEFT, 15, 0, false},
304 { "(", 0, opid1('('), ASSOC_LEFT, 15, 0, false}, /* function call */
305 { "[", 2, opid1('['), ASSOC_LEFT, 15, 0, false}, /* array subscript */
307 { "!", 1, opid2('!', 'P'), ASSOC_RIGHT, 14, OP_PREFIX, true},
308 { "+", 1, opid2('+','P'), ASSOC_RIGHT, 14, OP_PREFIX, false},
309 { "-", 1, opid2('-','P'), ASSOC_RIGHT, 14, OP_PREFIX, true},
311 { "*", 2, opid1('*'), ASSOC_LEFT, 13, 0, true},
312 { "/", 2, opid1('/'), ASSOC_LEFT, 13, 0, true},
313 { "&", 2, opid1('&'), ASSOC_LEFT, 13, 0, true},
314 { "|", 2, opid1('|'), ASSOC_LEFT, 13, 0, true},
316 { "+", 2, opid1('+'), ASSOC_LEFT, 12, 0, true},
317 { "-", 2, opid1('-'), ASSOC_LEFT, 12, 0, true},
319 { "<", 2, opid1('<'), ASSOC_LEFT, 10, 0, false},
320 { ">", 2, opid1('>'), ASSOC_LEFT, 10, 0, false},
321 { "<=", 2, opid2('<','='), ASSOC_LEFT, 10, 0, false},
322 { ">=", 2, opid2('>','='), ASSOC_LEFT, 10, 0, false},
323 { "==", 2, opid2('=','='), ASSOC_LEFT, 10, 0, false},
324 { "!=", 2, opid2('!','='), ASSOC_LEFT, 10, 0, false},
326 { "=", 2, opid1('='), 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, true},
331 { "%=", 2, opid2('%','='), ASSOC_RIGHT, 8, 0, false},
332 { "&=", 2, opid2('&','='), ASSOC_RIGHT, 8, 0, false},
333 { "|=", 2, opid2('|','='), ASSOC_RIGHT, 8, 0, false},
335 { "&&", 2, opid2('&','&'), ASSOC_LEFT, 5, 0, true},
336 { "||", 2, opid2('|','|'), ASSOC_LEFT, 5, 0, true},
338 { ",", 2, opid1(','), ASSOC_LEFT, 2, 0, false},
340 static const size_t qcc_operator_count = (sizeof(qcc_operators) / sizeof(qcc_operators[0]));
342 extern const oper_info *operators;
343 extern size_t operator_count;
344 /*void lexerror(lex_file*, const char *fmt, ...);*/