2 * Copyright 2008-2009 Katholieke Universiteit Leuven
4 * Use of this software is governed by the MIT license
6 * Written by Sven Verdoolaege, K.U.Leuven, Departement
7 * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
14 #include <isl_stream_private.h>
20 enum isl_token_type type;
23 static int same_name(const void *entry, const void *val)
25 const struct isl_keyword *keyword = (const struct isl_keyword *)entry;
27 return !strcmp(keyword->name, val);
30 enum isl_token_type isl_stream_register_keyword(struct isl_stream *s,
33 struct isl_hash_table_entry *entry;
34 struct isl_keyword *keyword;
38 s->keywords = isl_hash_table_alloc(s->ctx, 10);
40 return ISL_TOKEN_ERROR;
41 s->next_type = ISL_TOKEN_LAST;
44 name_hash = isl_hash_string(isl_hash_init(), name);
46 entry = isl_hash_table_find(s->ctx, s->keywords, name_hash,
49 return ISL_TOKEN_ERROR;
51 keyword = entry->data;
55 keyword = isl_calloc_type(s->ctx, struct isl_keyword);
57 return ISL_TOKEN_ERROR;
58 keyword->type = s->next_type++;
59 keyword->name = strdup(name);
62 return ISL_TOKEN_ERROR;
64 entry->data = keyword;
69 struct isl_token *isl_token_new(isl_ctx *ctx,
70 int line, int col, unsigned on_new_line)
72 struct isl_token *tok = isl_alloc_type(ctx, struct isl_token);
77 tok->on_new_line = on_new_line;
83 void isl_token_free(struct isl_token *tok)
87 if (tok->type == ISL_TOKEN_VALUE)
88 isl_int_clear(tok->u.v);
89 else if (tok->type == ISL_TOKEN_MAP)
90 isl_map_free(tok->u.map);
91 else if (tok->type == ISL_TOKEN_AFF)
92 isl_pw_aff_free(tok->u.pwaff);
98 void isl_stream_error(struct isl_stream *s, struct isl_token *tok, char *msg)
100 int line = tok ? tok->line : s->line;
101 int col = tok ? tok->col : s->col;
102 fprintf(stderr, "syntax error (%d, %d): %s\n", line, col, msg);
105 fprintf(stderr, "got '%c'\n", tok->type);
106 else if (tok->type == ISL_TOKEN_IDENT)
107 fprintf(stderr, "got ident '%s'\n", tok->u.s);
108 else if (tok->is_keyword)
109 fprintf(stderr, "got keyword '%s'\n", tok->u.s);
110 else if (tok->type == ISL_TOKEN_VALUE) {
111 fprintf(stderr, "got value '");
112 isl_int_print(stderr, tok->u.v, 0);
113 fprintf(stderr, "'\n");
114 } else if (tok->type == ISL_TOKEN_MAP) {
116 fprintf(stderr, "got map '");
117 p = isl_printer_to_file(s->ctx, stderr);
118 p = isl_printer_print_map(p, tok->u.map);
120 fprintf(stderr, "'\n");
121 } else if (tok->type == ISL_TOKEN_AFF) {
123 fprintf(stderr, "got affine expression '");
124 p = isl_printer_to_file(s->ctx, stderr);
125 p = isl_printer_print_pw_aff(p, tok->u.pwaff);
127 fprintf(stderr, "'\n");
129 fprintf(stderr, "got token '%s'\n", tok->u.s);
131 fprintf(stderr, "got token type %d\n", tok->type);
135 static struct isl_stream* isl_stream_new(struct isl_ctx *ctx)
138 struct isl_stream *s = isl_alloc_type(ctx, struct isl_stream);
151 for (i = 0; i < 5; ++i)
156 s->buffer = isl_alloc_array(ctx, char, s->size);
165 struct isl_stream* isl_stream_new_file(struct isl_ctx *ctx, FILE *file)
167 struct isl_stream *s = isl_stream_new(ctx);
174 struct isl_stream* isl_stream_new_str(struct isl_ctx *ctx, const char *str)
176 struct isl_stream *s = isl_stream_new(ctx);
183 static int stream_getc(struct isl_stream *s)
189 return s->c = s->un[--s->n_un];
210 static void isl_stream_ungetc(struct isl_stream *s, int c)
212 isl_assert(s->ctx, s->n_un < 5, return);
213 s->un[s->n_un++] = c;
217 static int isl_stream_getc(struct isl_stream *s)
228 isl_stream_ungetc(s, c);
233 static int isl_stream_push_char(struct isl_stream *s, int c)
235 if (s->len >= s->size) {
237 s->size = (3*s->size)/2;
238 buffer = isl_realloc_array(s->ctx, s->buffer, char, s->size);
243 s->buffer[s->len++] = c;
247 void isl_stream_push_token(struct isl_stream *s, struct isl_token *tok)
249 isl_assert(s->ctx, s->n_token < 5, return);
250 s->tokens[s->n_token++] = tok;
253 static enum isl_token_type check_keywords(struct isl_stream *s)
255 struct isl_hash_table_entry *entry;
256 struct isl_keyword *keyword;
259 if (!strcasecmp(s->buffer, "exists"))
260 return ISL_TOKEN_EXISTS;
261 if (!strcasecmp(s->buffer, "and"))
262 return ISL_TOKEN_AND;
263 if (!strcasecmp(s->buffer, "or"))
265 if (!strcasecmp(s->buffer, "not"))
266 return ISL_TOKEN_NOT;
267 if (!strcasecmp(s->buffer, "infty"))
268 return ISL_TOKEN_INFTY;
269 if (!strcasecmp(s->buffer, "infinity"))
270 return ISL_TOKEN_INFTY;
271 if (!strcasecmp(s->buffer, "NaN"))
272 return ISL_TOKEN_NAN;
273 if (!strcasecmp(s->buffer, "min"))
274 return ISL_TOKEN_MIN;
275 if (!strcasecmp(s->buffer, "max"))
276 return ISL_TOKEN_MAX;
277 if (!strcasecmp(s->buffer, "rat"))
278 return ISL_TOKEN_RAT;
279 if (!strcasecmp(s->buffer, "true"))
280 return ISL_TOKEN_TRUE;
281 if (!strcasecmp(s->buffer, "false"))
282 return ISL_TOKEN_FALSE;
283 if (!strcasecmp(s->buffer, "ceild"))
284 return ISL_TOKEN_CEILD;
285 if (!strcasecmp(s->buffer, "floord"))
286 return ISL_TOKEN_FLOORD;
287 if (!strcasecmp(s->buffer, "mod"))
288 return ISL_TOKEN_MOD;
291 return ISL_TOKEN_IDENT;
293 name_hash = isl_hash_string(isl_hash_init(), s->buffer);
294 entry = isl_hash_table_find(s->ctx, s->keywords, name_hash, same_name,
297 keyword = entry->data;
298 return keyword->type;
301 return ISL_TOKEN_IDENT;
304 int isl_stream_skip_line(struct isl_stream *s)
308 while ((c = isl_stream_getc(s)) != -1 && c != '\n')
312 return c == -1 ? -1 : 0;
315 static struct isl_token *next_token(struct isl_stream *s, int same_line)
318 struct isl_token *tok = NULL;
320 int old_line = s->line;
323 if (same_line && s->tokens[s->n_token - 1]->on_new_line)
325 return s->tokens[--s->n_token];
328 if (same_line && s->c == '\n')
333 /* skip spaces and comment lines */
334 while ((c = isl_stream_getc(s)) != -1) {
336 if (isl_stream_skip_line(s) < 0)
341 } else if (!isspace(c) || (same_line && c == '\n'))
348 if (c == -1 || (same_line && c == '\n'))
366 tok = isl_token_new(s->ctx, line, col, old_line != line);
369 tok->type = (enum isl_token_type)c;
374 if ((c = isl_stream_getc(s)) == '>') {
375 tok = isl_token_new(s->ctx, line, col, old_line != line);
378 tok->u.s = strdup("->");
379 tok->type = ISL_TOKEN_TO;
383 isl_stream_ungetc(s, c);
385 tok = isl_token_new(s->ctx, line, col, old_line != line);
388 tok->type = (enum isl_token_type) '-';
392 if (c == '-' || isdigit(c)) {
393 int minus = c == '-';
394 tok = isl_token_new(s->ctx, line, col, old_line != line);
397 tok->type = ISL_TOKEN_VALUE;
398 isl_int_init(tok->u.v);
399 if (isl_stream_push_char(s, c))
401 while ((c = isl_stream_getc(s)) != -1 && isdigit(c))
402 if (isl_stream_push_char(s, c))
405 isl_stream_ungetc(s, c);
406 isl_stream_push_char(s, '\0');
407 isl_int_read(tok->u.v, s->buffer);
408 if (minus && isl_int_is_zero(tok->u.v)) {
410 tok->on_new_line = 0;
411 isl_stream_push_token(s, tok);
412 tok = isl_token_new(s->ctx, line, col, old_line != line);
415 tok->type = (enum isl_token_type) '-';
419 if (isalpha(c) || c == '_') {
420 tok = isl_token_new(s->ctx, line, col, old_line != line);
423 isl_stream_push_char(s, c);
424 while ((c = isl_stream_getc(s)) != -1 &&
425 (isalnum(c) || c == '_'))
426 isl_stream_push_char(s, c);
428 isl_stream_ungetc(s, c);
429 while ((c = isl_stream_getc(s)) != -1 && c == '\'')
430 isl_stream_push_char(s, c);
432 isl_stream_ungetc(s, c);
433 isl_stream_push_char(s, '\0');
434 tok->type = check_keywords(s);
435 if (tok->type != ISL_TOKEN_IDENT)
437 tok->u.s = strdup(s->buffer);
443 tok = isl_token_new(s->ctx, line, col, old_line != line);
446 tok->type = ISL_TOKEN_STRING;
448 while ((c = isl_stream_getc(s)) != -1 && c != '"' && c != '\n')
449 isl_stream_push_char(s, c);
451 isl_stream_error(s, NULL, "unterminated string");
454 isl_stream_push_char(s, '\0');
455 tok->u.s = strdup(s->buffer);
460 tok = isl_token_new(s->ctx, line, col, old_line != line);
463 if ((c = isl_stream_getc(s)) == '=') {
464 tok->u.s = strdup("==");
465 tok->type = ISL_TOKEN_EQ_EQ;
469 isl_stream_ungetc(s, c);
470 tok->type = (enum isl_token_type) '=';
475 tok = isl_token_new(s->ctx, line, col, old_line != line);
478 if ((c = isl_stream_getc(s)) == '=') {
479 tok->u.s = strdup(":=");
480 tok->type = ISL_TOKEN_DEF;
484 isl_stream_ungetc(s, c);
485 tok->type = (enum isl_token_type) ':';
490 tok = isl_token_new(s->ctx, line, col, old_line != line);
493 if ((c = isl_stream_getc(s)) == '=') {
494 tok->u.s = strdup(">=");
495 tok->type = ISL_TOKEN_GE;
497 } else if (c == '>') {
498 if ((c = isl_stream_getc(s)) == '=') {
499 tok->u.s = strdup(">>=");
500 tok->type = ISL_TOKEN_LEX_GE;
503 tok->u.s = strdup(">>");
504 tok->type = ISL_TOKEN_LEX_GT;
506 tok->u.s = strdup(">");
507 tok->type = ISL_TOKEN_GT;
510 isl_stream_ungetc(s, c);
515 tok = isl_token_new(s->ctx, line, col, old_line != line);
518 if ((c = isl_stream_getc(s)) == '=') {
519 tok->u.s = strdup("<=");
520 tok->type = ISL_TOKEN_LE;
522 } else if (c == '<') {
523 if ((c = isl_stream_getc(s)) == '=') {
524 tok->u.s = strdup("<<=");
525 tok->type = ISL_TOKEN_LEX_LE;
528 tok->u.s = strdup("<<");
529 tok->type = ISL_TOKEN_LEX_LT;
531 tok->u.s = strdup("<");
532 tok->type = ISL_TOKEN_LT;
535 isl_stream_ungetc(s, c);
539 tok = isl_token_new(s->ctx, line, col, old_line != line);
542 tok->type = ISL_TOKEN_AND;
543 if ((c = isl_stream_getc(s)) != '&' && c != -1) {
544 tok->u.s = strdup("&");
545 isl_stream_ungetc(s, c);
547 tok->u.s = strdup("&&");
551 tok = isl_token_new(s->ctx, line, col, old_line != line);
554 tok->type = ISL_TOKEN_OR;
555 if ((c = isl_stream_getc(s)) != '|' && c != -1) {
556 tok->u.s = strdup("|");
557 isl_stream_ungetc(s, c);
559 tok->u.s = strdup("||");
563 tok = isl_token_new(s->ctx, line, col, old_line != line);
566 if ((c = isl_stream_getc(s)) != '\\' && c != -1) {
567 tok->type = (enum isl_token_type) '/';
568 isl_stream_ungetc(s, c);
570 tok->u.s = strdup("/\\");
571 tok->type = ISL_TOKEN_AND;
576 tok = isl_token_new(s->ctx, line, col, old_line != line);
579 if ((c = isl_stream_getc(s)) != '/' && c != -1) {
580 tok->type = (enum isl_token_type) '\\';
581 isl_stream_ungetc(s, c);
583 tok->u.s = strdup("\\/");
584 tok->type = ISL_TOKEN_OR;
589 tok = isl_token_new(s->ctx, line, col, old_line != line);
592 if ((c = isl_stream_getc(s)) == '=') {
593 tok->u.s = strdup("!=");
594 tok->type = ISL_TOKEN_NE;
597 tok->type = ISL_TOKEN_NOT;
598 tok->u.s = strdup("!");
601 isl_stream_ungetc(s, c);
605 tok = isl_token_new(s->ctx, line, col, old_line != line);
608 tok->type = ISL_TOKEN_UNKNOWN;
615 struct isl_token *isl_stream_next_token(struct isl_stream *s)
617 return next_token(s, 0);
620 struct isl_token *isl_stream_next_token_on_same_line(struct isl_stream *s)
622 return next_token(s, 1);
625 int isl_stream_eat_if_available(struct isl_stream *s, int type)
627 struct isl_token *tok;
629 tok = isl_stream_next_token(s);
632 if (tok->type == type) {
636 isl_stream_push_token(s, tok);
640 int isl_stream_next_token_is(struct isl_stream *s, int type)
642 struct isl_token *tok;
645 tok = isl_stream_next_token(s);
648 r = tok->type == type;
649 isl_stream_push_token(s, tok);
653 char *isl_stream_read_ident_if_available(struct isl_stream *s)
655 struct isl_token *tok;
657 tok = isl_stream_next_token(s);
660 if (tok->type == ISL_TOKEN_IDENT) {
661 char *ident = strdup(tok->u.s);
665 isl_stream_push_token(s, tok);
669 int isl_stream_eat(struct isl_stream *s, int type)
671 struct isl_token *tok;
673 tok = isl_stream_next_token(s);
676 if (tok->type == type) {
680 isl_stream_error(s, tok, "expecting other token");
681 isl_stream_push_token(s, tok);
685 int isl_stream_is_empty(struct isl_stream *s)
687 struct isl_token *tok;
689 tok = isl_stream_next_token(s);
694 isl_stream_push_token(s, tok);
698 static int free_keyword(void **p, void *user)
700 struct isl_keyword *keyword = *p;
708 void isl_stream_flush_tokens(struct isl_stream *s)
714 for (i = 0; i < s->n_token; ++i)
715 isl_token_free(s->tokens[i]);
719 void isl_stream_free(struct isl_stream *s)
724 if (s->n_token != 0) {
725 struct isl_token *tok = isl_stream_next_token(s);
726 isl_stream_error(s, tok, "unexpected token");
730 isl_hash_table_foreach(s->ctx, s->keywords, &free_keyword, NULL);
731 isl_hash_table_free(s->ctx, s->keywords);
733 isl_ctx_deref(s->ctx);