| 380 | } |
| 381 | |
| 382 | static int parse_primary(AVExpr **e, Parser *p) |
| 383 | { |
| 384 | AVExpr *d = av_mallocz(sizeof(AVExpr)); |
| 385 | char *next = p->s, *s0 = p->s; |
| 386 | int ret, i; |
| 387 | |
| 388 | if (!d) |
| 389 | return AVERROR(ENOMEM); |
| 390 | |
| 391 | /* number */ |
| 392 | d->value = av_strtod(p->s, &next); |
| 393 | if (next != p->s) { |
| 394 | d->type = e_value; |
| 395 | p->s= next; |
| 396 | *e = d; |
| 397 | return 0; |
| 398 | } |
| 399 | d->value = 1; |
| 400 | |
| 401 | /* named constants */ |
| 402 | for (i=0; p->const_names && p->const_names[i]; i++) { |
| 403 | if (strmatch(p->s, p->const_names[i])) { |
| 404 | p->s+= strlen(p->const_names[i]); |
| 405 | d->type = e_const; |
| 406 | d->const_index = i; |
| 407 | *e = d; |
| 408 | return 0; |
| 409 | } |
| 410 | } |
| 411 | for (i = 0; i < FF_ARRAY_ELEMS(constants); i++) { |
| 412 | if (strmatch(p->s, constants[i].name)) { |
| 413 | p->s += strlen(constants[i].name); |
| 414 | d->type = e_value; |
| 415 | d->value = constants[i].value; |
| 416 | *e = d; |
| 417 | return 0; |
| 418 | } |
| 419 | } |
| 420 | |
| 421 | p->s= strchr(p->s, '('); |
| 422 | if (!p->s) { |
| 423 | av_log(p, AV_LOG_ERROR, "Undefined constant or missing '(' in '%s'\n", s0); |
| 424 | p->s= next; |
| 425 | av_expr_free(d); |
| 426 | return AVERROR(EINVAL); |
| 427 | } |
| 428 | p->s++; // "(" |
| 429 | if (*next == '(') { // special case do-nothing |
| 430 | av_freep(&d); |
| 431 | if ((ret = parse_expr(&d, p)) < 0) |
| 432 | return ret; |
| 433 | if (p->s[0] != ')') { |
| 434 | av_log(p, AV_LOG_ERROR, "Missing ')' in '%s'\n", s0); |
| 435 | av_expr_free(d); |
| 436 | return AVERROR(EINVAL); |
| 437 | } |
| 438 | p->s++; // ")" |
| 439 | *e = d; |
no test coverage detected