6 #define PARSER_HT_LOCALS 2
7 #define PARSER_HT_SIZE 512
8 #define TYPEDEF_HT_SIZE 512
10 static void parser_enterblock(parser_t *parser);
11 static bool parser_leaveblock(parser_t *parser);
12 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
13 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
14 static bool parse_typedef(parser_t *parser);
15 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool is_static, uint32_t qflags, char *vstring);
16 static ast_block* parse_block(parser_t *parser);
17 static bool parse_block_into(parser_t *parser, ast_block *block);
18 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
19 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
20 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
21 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
22 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname);
23 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname);
24 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef, bool *is_vararg);
26 static void parseerror(parser_t *parser, const char *fmt, ...)
30 vcompile_error(parser->lex->tok.ctx, fmt, ap);
34 /* returns true if it counts as an error */
35 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
40 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
45 /**********************************************************************
49 static bool parser_next(parser_t *parser)
51 /* lex_do kills the previous token */
52 parser->tok = lex_do(parser->lex);
53 if (parser->tok == TOKEN_EOF)
55 if (parser->tok >= TOKEN_ERROR) {
56 parseerror(parser, "lex error");
62 #define parser_tokval(p) ((p)->lex->tok.value)
63 #define parser_token(p) (&((p)->lex->tok))
65 char *parser_strdup(const char *str)
68 /* actually dup empty strings */
69 char *out = (char*)mem_a(1);
73 return util_strdup(str);
76 static ast_expression* parser_find_field(parser_t *parser, const char *name)
78 return ( ast_expression*)util_htget(parser->htfields, name);
81 static ast_expression* parser_find_label(parser_t *parser, const char *name)
83 for (auto &it : parser->labels)
84 if (!strcmp(it->name, name))
85 return (ast_expression*)it;
89 ast_expression* parser_find_global(parser_t *parser, const char *name)
91 ast_expression *var = (ast_expression*)util_htget(parser->aliases, parser_tokval(parser));
94 return (ast_expression*)util_htget(parser->htglobals, name);
97 static ast_expression* parser_find_param(parser_t *parser, const char *name)
100 if (!parser->function)
102 fun = parser->function->vtype;
103 for (auto &it : fun->expression.params) {
104 if (!strcmp(it->name, name))
105 return (ast_expression*)it;
110 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
115 hash = util_hthash(parser->htglobals, name);
118 for (i = vec_size(parser->variables); i > upto;) {
120 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
124 return parser_find_param(parser, name);
127 static ast_expression* parser_find_var(parser_t *parser, const char *name)
131 v = parser_find_local(parser, name, 0, &dummy);
132 if (!v) v = parser_find_global(parser, name);
136 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
140 hash = util_hthash(parser->typedefs[0], name);
142 for (i = vec_size(parser->typedefs); i > upto;) {
144 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
152 size_t etype; /* 0 = expression, others are operators */
156 ast_block *block; /* for commas and function calls */
175 static sy_elem syexp(lex_ctx_t ctx, ast_expression *v) {
186 static sy_elem syblock(lex_ctx_t ctx, ast_block *v) {
190 e.out = (ast_expression*)v;
197 static sy_elem syop(lex_ctx_t ctx, const oper_info *op) {
199 e.etype = 1 + (op - operators);
208 static sy_elem syparen(lex_ctx_t ctx, size_t off) {
219 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
220 * so we need to rotate it to become ent.(foo[n]).
222 static bool rotate_entfield_array_index_nodes(ast_expression **out)
224 ast_array_index *index, *oldindex;
225 ast_entfield *entfield;
229 ast_expression *entity;
231 lex_ctx_t ctx = ast_ctx(*out);
233 if (!ast_istype(*out, ast_array_index))
235 index = (ast_array_index*)*out;
237 if (!ast_istype(index->array, ast_entfield))
239 entfield = (ast_entfield*)index->array;
241 if (!ast_istype(entfield->field, ast_value))
243 field = (ast_value*)entfield->field;
246 entity = entfield->entity;
250 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
251 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
252 *out = (ast_expression*)entfield;
254 oldindex->array = NULL;
255 oldindex->index = NULL;
256 ast_delete(oldindex);
261 static bool check_write_to(lex_ctx_t ctx, ast_expression *expr)
263 if (ast_istype(expr, ast_value)) {
264 ast_value *val = (ast_value*)expr;
265 if (val->cvq == CV_CONST) {
266 if (val->name[0] == '#') {
267 compile_error(ctx, "invalid assignment to a literal constant");
271 * To work around quakeworld we must elide the error and make it
274 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_QCC)
275 compile_error(ctx, "assignment to constant `%s`", val->name);
277 (void)!compile_warning(ctx, WARN_CONST_OVERWRITE, "assignment to constant `%s`", val->name);
284 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
288 ast_expression *out = NULL;
289 ast_expression *exprs[3];
290 ast_block *blocks[3];
291 ast_binstore *asbinstore;
292 size_t i, assignop, addop, subop;
293 qcint_t generated_op = 0;
298 if (!vec_size(sy->ops)) {
299 parseerror(parser, "internal error: missing operator");
303 if (vec_last(sy->ops).isparen) {
304 parseerror(parser, "unmatched parenthesis");
308 op = &operators[vec_last(sy->ops).etype - 1];
309 ctx = vec_last(sy->ops).ctx;
311 if (vec_size(sy->out) < op->operands) {
312 if (op->flags & OP_PREFIX)
313 compile_error(ctx, "expected expression after unary operator `%s`", op->op, (int)op->id);
314 else /* this should have errored previously already */
315 compile_error(ctx, "expected expression after operator `%s`", op->op, (int)op->id);
319 vec_shrinkby(sy->ops, 1);
321 /* op(:?) has no input and no output */
325 vec_shrinkby(sy->out, op->operands);
326 for (i = 0; i < op->operands; ++i) {
327 exprs[i] = sy->out[vec_size(sy->out)+i].out;
328 blocks[i] = sy->out[vec_size(sy->out)+i].block;
330 if (exprs[i]->vtype == TYPE_NOEXPR &&
331 !(i != 0 && op->id == opid2('?',':')) &&
332 !(i == 1 && op->id == opid1('.')))
334 if (ast_istype(exprs[i], ast_label))
335 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
337 compile_error(ast_ctx(exprs[i]), "not an expression");
338 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
342 if (blocks[0] && blocks[0]->exprs.empty() && op->id != opid1(',')) {
343 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
347 #define NotSameType(T) \
348 (exprs[0]->vtype != exprs[1]->vtype || \
349 exprs[0]->vtype != T)
354 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
358 if (exprs[0]->vtype == TYPE_VECTOR &&
359 exprs[1]->vtype == TYPE_NOEXPR)
361 if (exprs[1] == (ast_expression*)parser->const_vec[0])
362 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
363 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
364 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
365 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
366 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
368 compile_error(ctx, "access to invalid vector component");
372 else if (exprs[0]->vtype == TYPE_ENTITY) {
373 if (exprs[1]->vtype != TYPE_FIELD) {
374 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
377 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
379 else if (exprs[0]->vtype == TYPE_VECTOR) {
380 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
384 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
390 if (exprs[0]->vtype != TYPE_ARRAY &&
391 !(exprs[0]->vtype == TYPE_FIELD &&
392 exprs[0]->next->vtype == TYPE_ARRAY))
394 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
395 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
398 if (exprs[1]->vtype != TYPE_FLOAT) {
399 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
400 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
403 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
404 rotate_entfield_array_index_nodes(&out);
408 if (vec_size(sy->paren) && vec_last(sy->paren) == PAREN_FUNC) {
409 vec_push(sy->out, syexp(ctx, exprs[0]));
410 vec_push(sy->out, syexp(ctx, exprs[1]));
411 vec_last(sy->argc)++;
415 if (!ast_block_add_expr(blocks[0], exprs[1]))
418 blocks[0] = ast_block_new(ctx);
419 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
420 !ast_block_add_expr(blocks[0], exprs[1]))
425 ast_block_set_type(blocks[0], exprs[1]);
427 vec_push(sy->out, syblock(ctx, blocks[0]));
434 if ((out = fold_op(parser->fold, op, exprs)))
437 if (exprs[0]->vtype != TYPE_FLOAT &&
438 exprs[0]->vtype != TYPE_VECTOR) {
439 compile_error(ctx, "invalid types used in unary expression: cannot negate type %s",
440 type_name[exprs[0]->vtype]);
443 if (exprs[0]->vtype == TYPE_FLOAT)
444 out = (ast_expression*)ast_unary_new(ctx, VINSTR_NEG_F, exprs[0]);
446 out = (ast_expression*)ast_unary_new(ctx, VINSTR_NEG_V, exprs[0]);
450 if (!(out = fold_op(parser->fold, op, exprs))) {
451 switch (exprs[0]->vtype) {
453 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
456 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
459 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
460 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
462 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
464 /* we don't constant-fold NOT for these types */
466 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
469 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
472 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
473 type_name[exprs[0]->vtype]);
480 if (exprs[0]->vtype != exprs[1]->vtype ||
481 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
483 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
484 type_name[exprs[0]->vtype],
485 type_name[exprs[1]->vtype]);
488 if (!(out = fold_op(parser->fold, op, exprs))) {
489 switch (exprs[0]->vtype) {
491 out = fold_binary(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
494 out = fold_binary(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
497 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
498 type_name[exprs[0]->vtype],
499 type_name[exprs[1]->vtype]);
505 if (exprs[0]->vtype != exprs[1]->vtype ||
506 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT))
508 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
509 type_name[exprs[1]->vtype],
510 type_name[exprs[0]->vtype]);
513 if (!(out = fold_op(parser->fold, op, exprs))) {
514 switch (exprs[0]->vtype) {
516 out = fold_binary(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
519 out = fold_binary(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
522 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
523 type_name[exprs[1]->vtype],
524 type_name[exprs[0]->vtype]);
530 if (exprs[0]->vtype != exprs[1]->vtype &&
531 !(exprs[0]->vtype == TYPE_VECTOR &&
532 exprs[1]->vtype == TYPE_FLOAT) &&
533 !(exprs[1]->vtype == TYPE_VECTOR &&
534 exprs[0]->vtype == TYPE_FLOAT)
537 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
538 type_name[exprs[1]->vtype],
539 type_name[exprs[0]->vtype]);
542 if (!(out = fold_op(parser->fold, op, exprs))) {
543 switch (exprs[0]->vtype) {
545 if (exprs[1]->vtype == TYPE_VECTOR)
546 out = fold_binary(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
548 out = fold_binary(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
551 if (exprs[1]->vtype == TYPE_FLOAT)
552 out = fold_binary(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
554 out = fold_binary(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
557 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
558 type_name[exprs[1]->vtype],
559 type_name[exprs[0]->vtype]);
566 if (exprs[1]->vtype != TYPE_FLOAT) {
567 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
568 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
569 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
572 if (!(out = fold_op(parser->fold, op, exprs))) {
573 if (exprs[0]->vtype == TYPE_FLOAT)
574 out = fold_binary(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
576 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
577 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
578 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
585 if (NotSameType(TYPE_FLOAT)) {
586 compile_error(ctx, "invalid types used in expression: cannot perform modulo operation between types %s and %s",
587 type_name[exprs[0]->vtype],
588 type_name[exprs[1]->vtype]);
590 } else if (!(out = fold_op(parser->fold, op, exprs))) {
591 /* generate a call to __builtin_mod */
592 ast_expression *mod = intrin_func(parser->intrin, "mod");
593 ast_call *call = NULL;
594 if (!mod) return false; /* can return null for missing floor */
596 call = ast_call_new(parser_ctx(parser), mod);
597 call->params.push_back(exprs[0]);
598 call->params.push_back(exprs[1]);
600 out = (ast_expression*)call;
605 compile_error(ctx, "%= is unimplemented");
611 if ( !(exprs[0]->vtype == TYPE_FLOAT && exprs[1]->vtype == TYPE_FLOAT) &&
612 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_FLOAT) &&
613 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_VECTOR))
615 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
616 type_name[exprs[0]->vtype],
617 type_name[exprs[1]->vtype]);
621 if (!(out = fold_op(parser->fold, op, exprs))) {
623 * IF the first expression is float, the following will be too
624 * since scalar ^ vector is not allowed.
626 if (exprs[0]->vtype == TYPE_FLOAT) {
627 out = fold_binary(ctx,
628 (op->id == opid1('^') ? VINSTR_BITXOR : op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
632 * The first is a vector: vector is allowed to bitop with vector and
633 * with scalar, branch here for the second operand.
635 if (exprs[1]->vtype == TYPE_VECTOR) {
637 * Bitop all the values of the vector components against the
638 * vectors components in question.
640 out = fold_binary(ctx,
641 (op->id == opid1('^') ? VINSTR_BITXOR_V : op->id == opid1('|') ? VINSTR_BITOR_V : VINSTR_BITAND_V),
644 out = fold_binary(ctx,
645 (op->id == opid1('^') ? VINSTR_BITXOR_VF : op->id == opid1('|') ? VINSTR_BITOR_VF : VINSTR_BITAND_VF),
654 if (NotSameType(TYPE_FLOAT)) {
655 compile_error(ctx, "invalid types used in expression: cannot perform shift between types %s and %s",
656 type_name[exprs[0]->vtype],
657 type_name[exprs[1]->vtype]);
661 if (!(out = fold_op(parser->fold, op, exprs))) {
662 ast_expression *shift = intrin_func(parser->intrin, (op->id == opid2('<','<')) ? "__builtin_lshift" : "__builtin_rshift");
663 ast_call *call = ast_call_new(parser_ctx(parser), shift);
664 call->params.push_back(exprs[0]);
665 call->params.push_back(exprs[1]);
666 out = (ast_expression*)call;
670 case opid3('<','<','='):
671 case opid3('>','>','='):
672 if (NotSameType(TYPE_FLOAT)) {
673 compile_error(ctx, "invalid types used in expression: cannot perform shift operation between types %s and %s",
674 type_name[exprs[0]->vtype],
675 type_name[exprs[1]->vtype]);
679 if(!(out = fold_op(parser->fold, op, exprs))) {
680 ast_expression *shift = intrin_func(parser->intrin, (op->id == opid3('<','<','=')) ? "__builtin_lshift" : "__builtin_rshift");
681 ast_call *call = ast_call_new(parser_ctx(parser), shift);
682 call->params.push_back(exprs[0]);
683 call->params.push_back(exprs[1]);
684 out = (ast_expression*)ast_store_new(
688 (ast_expression*)call
695 generated_op += 1; /* INSTR_OR */
697 generated_op += INSTR_AND;
698 if (!(out = fold_op(parser->fold, op, exprs))) {
699 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
700 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
701 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
702 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
705 for (i = 0; i < 2; ++i) {
706 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->vtype == TYPE_VECTOR) {
707 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
709 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
711 exprs[i] = out; out = NULL;
712 if (OPTS_FLAG(PERL_LOGIC)) {
713 /* here we want to keep the right expressions' type */
717 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->vtype == TYPE_STRING) {
718 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
720 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
722 exprs[i] = out; out = NULL;
723 if (OPTS_FLAG(PERL_LOGIC)) {
724 /* here we want to keep the right expressions' type */
729 out = fold_binary(ctx, generated_op, exprs[0], exprs[1]);
734 if (vec_last(sy->paren) != PAREN_TERNARY2) {
735 compile_error(ctx, "mismatched parenthesis/ternary");
739 if (!ast_compare_type(exprs[1], exprs[2])) {
740 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
741 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
742 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
745 if (!(out = fold_op(parser->fold, op, exprs)))
746 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
749 case opid2('*', '*'):
750 if (NotSameType(TYPE_FLOAT)) {
751 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
752 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
753 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
758 if (!(out = fold_op(parser->fold, op, exprs))) {
759 ast_call *gencall = ast_call_new(parser_ctx(parser), intrin_func(parser->intrin, "pow"));
760 gencall->params.push_back(exprs[0]);
761 gencall->params.push_back(exprs[1]);
762 out = (ast_expression*)gencall;
766 case opid2('>', '<'):
767 if (NotSameType(TYPE_VECTOR)) {
768 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
769 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
770 compile_error(ctx, "invalid types used in cross product: %s and %s",
775 if (!(out = fold_op(parser->fold, op, exprs))) {
786 case opid3('<','=','>'): /* -1, 0, or 1 */
787 if (NotSameType(TYPE_FLOAT)) {
788 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
789 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
790 compile_error(ctx, "invalid types used in comparision: %s and %s",
796 if (!(out = fold_op(parser->fold, op, exprs))) {
797 /* This whole block is NOT fold_binary safe */
798 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
800 eq->refs = AST_REF_NONE;
803 out = (ast_expression*)ast_ternary_new(ctx,
804 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
806 (ast_expression*)parser->fold->imm_float[2],
809 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
811 (ast_expression*)parser->fold->imm_float[0],
814 (ast_expression*)parser->fold->imm_float[1]
824 generated_op += 1; /* INSTR_GT */
826 generated_op += 1; /* INSTR_LT */
827 case opid2('>', '='):
828 generated_op += 1; /* INSTR_GE */
829 case opid2('<', '='):
830 generated_op += INSTR_LE;
831 if (NotSameType(TYPE_FLOAT)) {
832 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
833 type_name[exprs[0]->vtype],
834 type_name[exprs[1]->vtype]);
837 if (!(out = fold_op(parser->fold, op, exprs)))
838 out = fold_binary(ctx, generated_op, exprs[0], exprs[1]);
840 case opid2('!', '='):
841 if (exprs[0]->vtype != exprs[1]->vtype) {
842 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
843 type_name[exprs[0]->vtype],
844 type_name[exprs[1]->vtype]);
847 if (!(out = fold_op(parser->fold, op, exprs)))
848 out = fold_binary(ctx, type_ne_instr[exprs[0]->vtype], exprs[0], exprs[1]);
850 case opid2('=', '='):
851 if (exprs[0]->vtype != exprs[1]->vtype) {
852 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
853 type_name[exprs[0]->vtype],
854 type_name[exprs[1]->vtype]);
857 if (!(out = fold_op(parser->fold, op, exprs)))
858 out = fold_binary(ctx, type_eq_instr[exprs[0]->vtype], exprs[0], exprs[1]);
862 if (ast_istype(exprs[0], ast_entfield)) {
863 ast_expression *field = ((ast_entfield*)exprs[0])->field;
864 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
865 exprs[0]->vtype == TYPE_FIELD &&
866 exprs[0]->next->vtype == TYPE_VECTOR)
868 assignop = type_storep_instr[TYPE_VECTOR];
871 assignop = type_storep_instr[exprs[0]->vtype];
872 if (assignop == VINSTR_END || !ast_compare_type(field->next, exprs[1]))
874 ast_type_to_string(field->next, ty1, sizeof(ty1));
875 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
876 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
877 field->next->vtype == TYPE_FUNCTION &&
878 exprs[1]->vtype == TYPE_FUNCTION)
880 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
881 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
884 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
889 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
890 exprs[0]->vtype == TYPE_FIELD &&
891 exprs[0]->next->vtype == TYPE_VECTOR)
893 assignop = type_store_instr[TYPE_VECTOR];
896 assignop = type_store_instr[exprs[0]->vtype];
899 if (assignop == VINSTR_END) {
900 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
901 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
902 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
904 else if (!ast_compare_type(exprs[0], exprs[1]))
906 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
907 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
908 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
909 exprs[0]->vtype == TYPE_FUNCTION &&
910 exprs[1]->vtype == TYPE_FUNCTION)
912 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
913 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
916 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
919 (void)check_write_to(ctx, exprs[0]);
920 /* When we're a vector of part of an entity field we use STOREP */
921 if (ast_istype(exprs[0], ast_member) && ast_istype(((ast_member*)exprs[0])->owner, ast_entfield))
922 assignop = INSTR_STOREP_F;
923 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
925 case opid3('+','+','P'):
926 case opid3('-','-','P'):
928 if (exprs[0]->vtype != TYPE_FLOAT) {
929 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
930 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
933 if (op->id == opid3('+','+','P'))
937 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
938 if (ast_istype(exprs[0], ast_entfield)) {
939 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
941 (ast_expression*)parser->fold->imm_float[1]);
943 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
945 (ast_expression*)parser->fold->imm_float[1]);
948 case opid3('S','+','+'):
949 case opid3('S','-','-'):
951 if (exprs[0]->vtype != TYPE_FLOAT) {
952 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
953 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
956 if (op->id == opid3('S','+','+')) {
963 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
964 if (ast_istype(exprs[0], ast_entfield)) {
965 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
967 (ast_expression*)parser->fold->imm_float[1]);
969 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
971 (ast_expression*)parser->fold->imm_float[1]);
975 out = fold_binary(ctx, subop,
977 (ast_expression*)parser->fold->imm_float[1]);
982 if (exprs[0]->vtype != exprs[1]->vtype ||
983 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
985 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
986 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
987 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
991 (void)check_write_to(ctx, exprs[0]);
992 if (ast_istype(exprs[0], ast_entfield))
993 assignop = type_storep_instr[exprs[0]->vtype];
995 assignop = type_store_instr[exprs[0]->vtype];
996 switch (exprs[0]->vtype) {
998 out = (ast_expression*)ast_binstore_new(ctx, assignop,
999 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1000 exprs[0], exprs[1]);
1003 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1004 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1005 exprs[0], exprs[1]);
1008 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1009 type_name[exprs[0]->vtype],
1010 type_name[exprs[1]->vtype]);
1014 case opid2('*','='):
1015 case opid2('/','='):
1016 if (exprs[1]->vtype != TYPE_FLOAT ||
1017 !(exprs[0]->vtype == TYPE_FLOAT ||
1018 exprs[0]->vtype == TYPE_VECTOR))
1020 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1021 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1022 compile_error(ctx, "invalid types used in expression: %s and %s",
1026 (void)check_write_to(ctx, exprs[0]);
1027 if (ast_istype(exprs[0], ast_entfield))
1028 assignop = type_storep_instr[exprs[0]->vtype];
1030 assignop = type_store_instr[exprs[0]->vtype];
1031 switch (exprs[0]->vtype) {
1033 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1034 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1035 exprs[0], exprs[1]);
1038 if (op->id == opid2('*','=')) {
1039 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1040 exprs[0], exprs[1]);
1042 out = fold_binary(ctx, INSTR_DIV_F,
1043 (ast_expression*)parser->fold->imm_float[1],
1046 compile_error(ctx, "internal error: failed to generate division");
1049 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1054 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1055 type_name[exprs[0]->vtype],
1056 type_name[exprs[1]->vtype]);
1060 case opid2('&','='):
1061 case opid2('|','='):
1062 case opid2('^','='):
1063 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1064 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1065 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1066 compile_error(ctx, "invalid types used in expression: %s and %s",
1070 (void)check_write_to(ctx, exprs[0]);
1071 if (ast_istype(exprs[0], ast_entfield))
1072 assignop = type_storep_instr[exprs[0]->vtype];
1074 assignop = type_store_instr[exprs[0]->vtype];
1075 if (exprs[0]->vtype == TYPE_FLOAT)
1076 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1077 (op->id == opid2('^','=') ? VINSTR_BITXOR : op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1078 exprs[0], exprs[1]);
1080 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1081 (op->id == opid2('^','=') ? VINSTR_BITXOR_V : op->id == opid2('&','=') ? VINSTR_BITAND_V : VINSTR_BITOR_V),
1082 exprs[0], exprs[1]);
1084 case opid3('&','~','='):
1085 /* This is like: a &= ~(b);
1086 * But QC has no bitwise-not, so we implement it as
1089 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1090 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1091 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1092 compile_error(ctx, "invalid types used in expression: %s and %s",
1096 if (ast_istype(exprs[0], ast_entfield))
1097 assignop = type_storep_instr[exprs[0]->vtype];
1099 assignop = type_store_instr[exprs[0]->vtype];
1100 if (exprs[0]->vtype == TYPE_FLOAT)
1101 out = fold_binary(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1103 out = fold_binary(ctx, VINSTR_BITAND_V, exprs[0], exprs[1]);
1106 (void)check_write_to(ctx, exprs[0]);
1107 if (exprs[0]->vtype == TYPE_FLOAT)
1108 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1110 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_V, exprs[0], out);
1111 asbinstore->keep_dest = true;
1112 out = (ast_expression*)asbinstore;
1115 case opid3('l', 'e', 'n'):
1116 if (exprs[0]->vtype != TYPE_STRING && exprs[0]->vtype != TYPE_ARRAY) {
1117 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1118 compile_error(ast_ctx(exprs[0]), "invalid type for length operator: %s", ty1);
1121 /* strings must be const, arrays are statically sized */
1122 if (exprs[0]->vtype == TYPE_STRING &&
1123 !(((ast_value*)exprs[0])->hasvalue && ((ast_value*)exprs[0])->cvq == CV_CONST))
1125 compile_error(ast_ctx(exprs[0]), "operand of length operator not a valid constant expression");
1128 out = fold_op(parser->fold, op, exprs);
1131 case opid2('~', 'P'):
1132 if (exprs[0]->vtype != TYPE_FLOAT && exprs[0]->vtype != TYPE_VECTOR) {
1133 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1134 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1137 if (!(out = fold_op(parser->fold, op, exprs))) {
1138 if (exprs[0]->vtype == TYPE_FLOAT) {
1139 out = fold_binary(ctx, INSTR_SUB_F, (ast_expression*)parser->fold->imm_float[2], exprs[0]);
1141 out = fold_binary(ctx, INSTR_SUB_V, (ast_expression*)parser->fold->imm_vector[1], exprs[0]);
1148 compile_error(ctx, "failed to apply operator %s", op->op);
1152 vec_push(sy->out, syexp(ctx, out));
1156 static bool parser_close_call(parser_t *parser, shunt *sy)
1158 /* was a function call */
1159 ast_expression *fun;
1160 ast_value *funval = NULL;
1164 size_t paramcount, i;
1167 fid = vec_last(sy->ops).off;
1168 vec_shrinkby(sy->ops, 1);
1170 /* out[fid] is the function
1171 * everything above is parameters...
1173 if (!vec_size(sy->argc)) {
1174 parseerror(parser, "internal error: no argument counter available");
1178 paramcount = vec_last(sy->argc);
1181 if (vec_size(sy->out) < fid) {
1182 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1183 (unsigned long)vec_size(sy->out),
1185 (unsigned long)paramcount);
1190 * TODO handle this at the intrinsic level with an ast_intrinsic
1193 if ((fun = sy->out[fid].out) == intrin_debug_typestring(parser->intrin)) {
1195 if (fid+2 != vec_size(sy->out) ||
1196 vec_last(sy->out).block)
1198 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1201 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1202 ast_unref(vec_last(sy->out).out);
1203 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1204 (ast_expression*)fold_constgen_string(parser->fold, ty, false));
1205 vec_shrinkby(sy->out, 1);
1210 * Now we need to determine if the function that is being called is
1211 * an intrinsic so we can evaluate if the arguments to it are constant
1212 * and than fruitfully fold them.
1214 #define fold_can_1(X) \
1215 (ast_istype(((ast_expression*)(X)), ast_value) && (X)->hasvalue && ((X)->cvq == CV_CONST) && \
1216 ((ast_expression*)(X))->vtype != TYPE_FUNCTION)
1218 if (fid + 1 < vec_size(sy->out))
1221 for (i = 0; i < paramcount; ++i) {
1222 if (!fold_can_1((ast_value*)sy->out[fid + 1 + i].out)) {
1229 * All is well which ends well, if we make it into here we can ignore the
1230 * intrinsic call and just evaluate it i.e constant fold it.
1232 if (fold && ast_istype(fun, ast_value) && ((ast_value*)fun)->intrinsic) {
1233 ast_expression **exprs = NULL;
1234 ast_expression *foldval = NULL;
1236 for (i = 0; i < paramcount; i++)
1237 vec_push(exprs, sy->out[fid+1 + i].out);
1239 if (!(foldval = intrin_fold(parser->intrin, (ast_value*)fun, exprs))) {
1245 * Blub: what sorts of unreffing and resizing of
1246 * sy->out should I be doing here?
1248 sy->out[fid] = syexp(foldval->node.context, foldval);
1249 vec_shrinkby(sy->out, paramcount);
1256 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1261 if (fid+1 + paramcount != vec_size(sy->out)) {
1262 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1263 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1267 for (i = 0; i < paramcount; ++i)
1268 call->params.push_back(sy->out[fid+1 + i].out);
1269 vec_shrinkby(sy->out, paramcount);
1270 (void)!ast_call_check_types(call, parser->function->vtype->expression.varparam);
1271 if (parser->max_param_count < paramcount)
1272 parser->max_param_count = paramcount;
1274 if (ast_istype(fun, ast_value)) {
1275 funval = (ast_value*)fun;
1276 if ((fun->flags & AST_FLAG_VARIADIC) &&
1277 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1279 call->va_count = (ast_expression*)fold_constgen_float(parser->fold, (qcfloat_t)paramcount, false);
1283 /* overwrite fid, the function, with a call */
1284 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1286 if (fun->vtype != TYPE_FUNCTION) {
1287 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1292 parseerror(parser, "could not determine function return type");
1295 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1297 if (fun->flags & AST_FLAG_DEPRECATED) {
1299 return !parsewarning(parser, WARN_DEPRECATED,
1300 "call to function (which is marked deprecated)\n",
1301 "-> it has been declared here: %s:%i",
1302 ast_ctx(fun).file, ast_ctx(fun).line);
1305 return !parsewarning(parser, WARN_DEPRECATED,
1306 "call to `%s` (which is marked deprecated)\n"
1307 "-> `%s` declared here: %s:%i",
1308 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1310 return !parsewarning(parser, WARN_DEPRECATED,
1311 "call to `%s` (deprecated: %s)\n"
1312 "-> `%s` declared here: %s:%i",
1313 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1317 if (fun->params.size() != paramcount &&
1318 !((fun->flags & AST_FLAG_VARIADIC) &&
1319 fun->params.size() < paramcount))
1321 const char *fewmany = (fun->params.size() > paramcount) ? "few" : "many";
1323 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1324 "too %s parameters for call to %s: expected %i, got %i\n"
1325 " -> `%s` has been declared here: %s:%i",
1326 fewmany, fval->name, (int)fun->params.size(), (int)paramcount,
1327 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1329 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1330 "too %s parameters for function call: expected %i, got %i\n"
1331 " -> it has been declared here: %s:%i",
1332 fewmany, (int)fun->params.size(), (int)paramcount,
1333 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1340 static bool parser_close_paren(parser_t *parser, shunt *sy)
1342 if (!vec_size(sy->ops)) {
1343 parseerror(parser, "unmatched closing paren");
1347 while (vec_size(sy->ops)) {
1348 if (vec_last(sy->ops).isparen) {
1349 if (vec_last(sy->paren) == PAREN_FUNC) {
1351 if (!parser_close_call(parser, sy))
1355 if (vec_last(sy->paren) == PAREN_EXPR) {
1357 if (!vec_size(sy->out)) {
1358 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1359 vec_shrinkby(sy->ops, 1);
1362 vec_shrinkby(sy->ops, 1);
1365 if (vec_last(sy->paren) == PAREN_INDEX) {
1367 /* pop off the parenthesis */
1368 vec_shrinkby(sy->ops, 1);
1369 /* then apply the index operator */
1370 if (!parser_sy_apply_operator(parser, sy))
1374 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1375 vec_last(sy->paren) = PAREN_TERNARY2;
1376 /* pop off the parenthesis */
1377 vec_shrinkby(sy->ops, 1);
1380 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1383 if (!parser_sy_apply_operator(parser, sy))
1389 static void parser_reclassify_token(parser_t *parser)
1392 if (parser->tok >= TOKEN_START)
1394 for (i = 0; i < operator_count; ++i) {
1395 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1396 parser->tok = TOKEN_OPERATOR;
1402 static ast_expression* parse_vararg_do(parser_t *parser)
1404 ast_expression *idx, *out;
1406 ast_value *funtype = parser->function->vtype;
1407 lex_ctx_t ctx = parser_ctx(parser);
1409 if (!parser->function->varargs) {
1410 parseerror(parser, "function has no variable argument list");
1414 if (!parser_next(parser) || parser->tok != '(') {
1415 parseerror(parser, "expected parameter index and type in parenthesis");
1418 if (!parser_next(parser)) {
1419 parseerror(parser, "error parsing parameter index");
1423 idx = parse_expression_leave(parser, true, false, false);
1427 if (parser->tok != ',') {
1428 if (parser->tok != ')') {
1430 parseerror(parser, "expected comma after parameter index");
1433 /* vararg piping: ...(start) */
1434 out = (ast_expression*)ast_argpipe_new(ctx, idx);
1438 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1440 parseerror(parser, "expected typename for vararg");
1444 typevar = parse_typename(parser, NULL, NULL, NULL);
1450 if (parser->tok != ')') {
1452 ast_delete(typevar);
1453 parseerror(parser, "expected closing paren");
1457 if (funtype->expression.varparam &&
1458 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1462 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1463 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1464 compile_error(ast_ctx(typevar),
1465 "function was declared to take varargs of type `%s`, requested type is: %s",
1469 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1470 ast_type_adopt(out, typevar);
1471 ast_delete(typevar);
1475 static ast_expression* parse_vararg(parser_t *parser)
1477 bool old_noops = parser->lex->flags.noops;
1479 ast_expression *out;
1481 parser->lex->flags.noops = true;
1482 out = parse_vararg_do(parser);
1484 parser->lex->flags.noops = old_noops;
1488 /* not to be exposed */
1489 bool ftepp_predef_exists(const char *name);
1490 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1492 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1493 parser->tok == TOKEN_IDENT &&
1494 !strcmp(parser_tokval(parser), "_"))
1496 /* a translatable string */
1499 parser->lex->flags.noops = true;
1500 if (!parser_next(parser) || parser->tok != '(') {
1501 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1504 parser->lex->flags.noops = false;
1505 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1506 parseerror(parser, "expected a constant string in translatable-string extension");
1509 val = (ast_value*)fold_constgen_string(parser->fold, parser_tokval(parser), true);
1512 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1514 if (!parser_next(parser) || parser->tok != ')') {
1515 parseerror(parser, "expected closing paren after translatable string");
1520 else if (parser->tok == TOKEN_DOTS)
1523 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1524 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1527 va = parse_vararg(parser);
1530 vec_push(sy->out, syexp(parser_ctx(parser), va));
1533 else if (parser->tok == TOKEN_FLOATCONST) {
1534 ast_expression *val = fold_constgen_float(parser->fold, (parser_token(parser)->constval.f), false);
1537 vec_push(sy->out, syexp(parser_ctx(parser), val));
1540 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1541 ast_expression *val = fold_constgen_float(parser->fold, (qcfloat_t)(parser_token(parser)->constval.i), false);
1544 vec_push(sy->out, syexp(parser_ctx(parser), val));
1547 else if (parser->tok == TOKEN_STRINGCONST) {
1548 ast_expression *val = fold_constgen_string(parser->fold, parser_tokval(parser), false);
1551 vec_push(sy->out, syexp(parser_ctx(parser), val));
1554 else if (parser->tok == TOKEN_VECTORCONST) {
1555 ast_expression *val = fold_constgen_vector(parser->fold, parser_token(parser)->constval.v);
1558 vec_push(sy->out, syexp(parser_ctx(parser), val));
1561 else if (parser->tok == TOKEN_IDENT)
1563 const char *ctoken = parser_tokval(parser);
1564 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1565 ast_expression *var;
1566 /* a_vector.{x,y,z} */
1567 if (!vec_size(sy->ops) ||
1568 !vec_last(sy->ops).etype ||
1569 operators[vec_last(sy->ops).etype-1].id != opid1('.'))
1571 /* When adding more intrinsics, fix the above condition */
1574 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1576 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1578 var = parser_find_var(parser, parser_tokval(parser));
1580 var = parser_find_field(parser, parser_tokval(parser));
1582 if (!var && with_labels) {
1583 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1585 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1586 var = (ast_expression*)lbl;
1587 parser->labels.push_back(lbl);
1590 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
1591 var = (ast_expression*)fold_constgen_string(parser->fold, parser->function->name, false);
1594 * now we try for the real intrinsic hashtable. If the string
1595 * begins with __builtin, we simply skip past it, otherwise we
1596 * use the identifier as is.
1598 if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
1599 var = intrin_func(parser->intrin, parser_tokval(parser));
1603 * Try it again, intrin_func deals with the alias method as well
1604 * the first one masks for __builtin though, we emit warning here.
1607 if ((var = intrin_func(parser->intrin, parser_tokval(parser)))) {
1608 (void)!compile_warning(
1611 "using implicitly defined builtin `__builtin_%s' for `%s'",
1612 parser_tokval(parser),
1613 parser_tokval(parser)
1621 * sometimes people use preprocessing predefs without enabling them
1622 * i've done this thousands of times already myself. Lets check for
1623 * it in the predef table. And diagnose it better :)
1625 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
1626 parseerror(parser, "unexpected identifier: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1630 parseerror(parser, "unexpected identifier: %s", parser_tokval(parser));
1636 if (ast_istype(var, ast_value)) {
1637 ((ast_value*)var)->uses++;
1639 else if (ast_istype(var, ast_member)) {
1640 ast_member *mem = (ast_member*)var;
1641 if (ast_istype(mem->owner, ast_value))
1642 ((ast_value*)(mem->owner))->uses++;
1645 vec_push(sy->out, syexp(parser_ctx(parser), var));
1648 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1652 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1654 ast_expression *expr = NULL;
1657 bool wantop = false;
1658 /* only warn once about an assignment in a truth value because the current code
1659 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1661 bool warn_parenthesis = true;
1663 /* count the parens because an if starts with one, so the
1664 * end of a condition is an unmatched closing paren
1668 memset(&sy, 0, sizeof(sy));
1670 parser->lex->flags.noops = false;
1672 parser_reclassify_token(parser);
1676 if (parser->tok == TOKEN_TYPENAME) {
1677 parseerror(parser, "unexpected typename `%s`", parser_tokval(parser));
1681 if (parser->tok == TOKEN_OPERATOR)
1683 /* classify the operator */
1684 const oper_info *op;
1685 const oper_info *olast = NULL;
1687 for (o = 0; o < operator_count; ++o) {
1688 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1689 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1690 !strcmp(parser_tokval(parser), operators[o].op))
1695 if (o == operator_count) {
1696 compile_error(parser_ctx(parser), "unexpected operator: %s", parser_tokval(parser));
1699 /* found an operator */
1702 /* when declaring variables, a comma starts a new variable */
1703 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
1704 /* fixup the token */
1709 /* a colon without a pervious question mark cannot be a ternary */
1710 if (!ternaries && op->id == opid2(':','?')) {
1715 if (op->id == opid1(',')) {
1716 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1717 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1721 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1722 olast = &operators[vec_last(sy.ops).etype-1];
1724 /* first only apply higher precedences, assoc_left+equal comes after we warn about precedence rules */
1725 while (olast && op->prec < olast->prec)
1727 if (!parser_sy_apply_operator(parser, &sy))
1729 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1730 olast = &operators[vec_last(sy.ops).etype-1];
1735 #define IsAssignOp(x) (\
1736 (x) == opid1('=') || \
1737 (x) == opid2('+','=') || \
1738 (x) == opid2('-','=') || \
1739 (x) == opid2('*','=') || \
1740 (x) == opid2('/','=') || \
1741 (x) == opid2('%','=') || \
1742 (x) == opid2('&','=') || \
1743 (x) == opid2('|','=') || \
1744 (x) == opid3('&','~','=') \
1746 if (warn_parenthesis) {
1747 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1748 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1749 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
1752 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1753 warn_parenthesis = false;
1756 if (olast && olast->id != op->id) {
1757 if ((op->id == opid1('&') || op->id == opid1('|') || op->id == opid1('^')) &&
1758 (olast->id == opid1('&') || olast->id == opid1('|') || olast->id == opid1('^')))
1760 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around bitwise operations");
1761 warn_parenthesis = false;
1763 else if ((op->id == opid2('&','&') || op->id == opid2('|','|')) &&
1764 (olast->id == opid2('&','&') || olast->id == opid2('|','|')))
1766 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around logical operations");
1767 warn_parenthesis = false;
1773 (op->prec < olast->prec) ||
1774 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1776 if (!parser_sy_apply_operator(parser, &sy))
1778 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1779 olast = &operators[vec_last(sy.ops).etype-1];
1784 if (op->id == opid1('(')) {
1786 size_t sycount = vec_size(sy.out);
1787 /* we expected an operator, this is the function-call operator */
1788 vec_push(sy.paren, PAREN_FUNC);
1789 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
1790 vec_push(sy.argc, 0);
1792 vec_push(sy.paren, PAREN_EXPR);
1793 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1796 } else if (op->id == opid1('[')) {
1798 parseerror(parser, "unexpected array subscript");
1801 vec_push(sy.paren, PAREN_INDEX);
1802 /* push both the operator and the paren, this makes life easier */
1803 vec_push(sy.ops, syop(parser_ctx(parser), op));
1804 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1806 } else if (op->id == opid2('?',':')) {
1807 vec_push(sy.ops, syop(parser_ctx(parser), op));
1808 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1811 vec_push(sy.paren, PAREN_TERNARY1);
1812 } else if (op->id == opid2(':','?')) {
1813 if (!vec_size(sy.paren)) {
1814 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1817 if (vec_last(sy.paren) != PAREN_TERNARY1) {
1818 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1821 if (!parser_close_paren(parser, &sy))
1823 vec_push(sy.ops, syop(parser_ctx(parser), op));
1827 vec_push(sy.ops, syop(parser_ctx(parser), op));
1828 wantop = !!(op->flags & OP_SUFFIX);
1831 else if (parser->tok == ')') {
1832 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1833 if (!parser_sy_apply_operator(parser, &sy))
1836 if (!vec_size(sy.paren))
1839 if (vec_last(sy.paren) == PAREN_TERNARY1) {
1840 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
1843 if (!parser_close_paren(parser, &sy))
1846 /* must be a function call without parameters */
1847 if (vec_last(sy.paren) != PAREN_FUNC) {
1848 parseerror(parser, "closing paren in invalid position");
1851 if (!parser_close_paren(parser, &sy))
1856 else if (parser->tok == '(') {
1857 parseerror(parser, "internal error: '(' should be classified as operator");
1860 else if (parser->tok == '[') {
1861 parseerror(parser, "internal error: '[' should be classified as operator");
1864 else if (parser->tok == ']') {
1865 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1866 if (!parser_sy_apply_operator(parser, &sy))
1869 if (!vec_size(sy.paren))
1871 if (vec_last(sy.paren) != PAREN_INDEX) {
1872 parseerror(parser, "mismatched parentheses, unexpected ']'");
1875 if (!parser_close_paren(parser, &sy))
1880 if (!parse_sya_operand(parser, &sy, with_labels))
1885 /* in this case we might want to allow constant string concatenation */
1886 bool concatenated = false;
1887 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
1888 ast_expression *lexpr = vec_last(sy.out).out;
1889 if (ast_istype(lexpr, ast_value)) {
1890 ast_value *last = (ast_value*)lexpr;
1891 if (last->isimm == true && last->cvq == CV_CONST &&
1892 last->hasvalue && last->expression.vtype == TYPE_STRING)
1894 char *newstr = NULL;
1895 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
1896 vec_last(sy.out).out = (ast_expression*)fold_constgen_string(parser->fold, newstr, false);
1898 concatenated = true;
1902 if (!concatenated) {
1903 parseerror(parser, "expected operator or end of statement");
1908 if (!parser_next(parser)) {
1911 if (parser->tok == ';' ||
1912 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
1913 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
1919 while (vec_size(sy.ops)) {
1920 if (!parser_sy_apply_operator(parser, &sy))
1924 parser->lex->flags.noops = true;
1925 if (vec_size(sy.out) != 1) {
1926 parseerror(parser, "expression expected");
1929 expr = sy.out[0].out;
1932 if (vec_size(sy.paren)) {
1933 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
1941 parser->lex->flags.noops = true;
1942 for (i = 0; i < vec_size(sy.out); ++i) {
1944 ast_unref(sy.out[i].out);
1953 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
1955 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
1958 if (parser->tok != ';') {
1959 parseerror(parser, "semicolon expected after expression");
1963 if (!parser_next(parser)) {
1970 static void parser_enterblock(parser_t *parser)
1972 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1973 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1974 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1975 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1976 vec_push(parser->_block_ctx, parser_ctx(parser));
1979 static bool parser_leaveblock(parser_t *parser)
1982 size_t locals, typedefs;
1984 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1985 parseerror(parser, "internal error: parser_leaveblock with no block");
1989 util_htdel(vec_last(parser->variables));
1991 vec_pop(parser->variables);
1992 if (!vec_size(parser->_blocklocals)) {
1993 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1997 locals = vec_last(parser->_blocklocals);
1998 vec_pop(parser->_blocklocals);
1999 while (vec_size(parser->_locals) != locals) {
2000 ast_expression *e = vec_last(parser->_locals);
2001 ast_value *v = (ast_value*)e;
2002 vec_pop(parser->_locals);
2003 if (ast_istype(e, ast_value) && !v->uses) {
2004 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2009 typedefs = vec_last(parser->_blocktypedefs);
2010 while (vec_size(parser->_typedefs) != typedefs) {
2011 ast_delete(vec_last(parser->_typedefs));
2012 vec_pop(parser->_typedefs);
2014 util_htdel(vec_last(parser->typedefs));
2015 vec_pop(parser->typedefs);
2017 vec_pop(parser->_block_ctx);
2022 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2024 vec_push(parser->_locals, e);
2025 util_htset(vec_last(parser->variables), name, (void*)e);
2028 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2030 vec_push(parser->globals, e);
2031 util_htset(parser->htglobals, name, e);
2034 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2038 ast_expression *prev;
2040 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2042 ast_type_to_string(cond, ty, sizeof(ty));
2043 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2046 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2049 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2052 parseerror(parser, "internal error: failed to process condition");
2057 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2059 /* vector types need to be cast to true booleans */
2060 ast_binary *bin = (ast_binary*)cond;
2061 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2063 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2065 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2068 parseerror(parser, "internal error: failed to process condition");
2075 unary = (ast_unary*)cond;
2076 /* ast_istype dereferences cond, should test here for safety */
2077 while (cond && ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2079 cond = unary->operand;
2080 unary->operand = NULL;
2083 unary = (ast_unary*)cond;
2087 parseerror(parser, "internal error: failed to process condition");
2089 if (ifnot) *_ifnot = !*_ifnot;
2093 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2096 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2099 lex_ctx_t ctx = parser_ctx(parser);
2101 (void)block; /* not touching */
2103 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2104 if (!parser_next(parser)) {
2105 parseerror(parser, "expected condition or 'not'");
2108 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2110 if (!parser_next(parser)) {
2111 parseerror(parser, "expected condition in parenthesis");
2115 if (parser->tok != '(') {
2116 parseerror(parser, "expected 'if' condition in parenthesis");
2119 /* parse into the expression */
2120 if (!parser_next(parser)) {
2121 parseerror(parser, "expected 'if' condition after opening paren");
2124 /* parse the condition */
2125 cond = parse_expression_leave(parser, false, true, false);
2129 if (parser->tok != ')') {
2130 parseerror(parser, "expected closing paren after 'if' condition");
2134 /* parse into the 'then' branch */
2135 if (!parser_next(parser)) {
2136 parseerror(parser, "expected statement for on-true branch of 'if'");
2140 if (!parse_statement_or_block(parser, &ontrue)) {
2145 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2146 /* check for an else */
2147 if (!strcmp(parser_tokval(parser), "else")) {
2148 /* parse into the 'else' branch */
2149 if (!parser_next(parser)) {
2150 parseerror(parser, "expected on-false branch after 'else'");
2155 if (!parse_statement_or_block(parser, &onfalse)) {
2162 cond = process_condition(parser, cond, &ifnot);
2164 if (ontrue) ast_delete(ontrue);
2165 if (onfalse) ast_delete(onfalse);
2170 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2172 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2173 *out = (ast_expression*)ifthen;
2177 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2178 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2183 /* skip the 'while' and get the body */
2184 if (!parser_next(parser)) {
2185 if (OPTS_FLAG(LOOP_LABELS))
2186 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2188 parseerror(parser, "expected 'while' condition in parenthesis");
2192 if (parser->tok == ':') {
2193 if (!OPTS_FLAG(LOOP_LABELS))
2194 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2195 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2196 parseerror(parser, "expected loop label");
2199 label = util_strdup(parser_tokval(parser));
2200 if (!parser_next(parser)) {
2202 parseerror(parser, "expected 'while' condition in parenthesis");
2207 if (parser->tok != '(') {
2208 parseerror(parser, "expected 'while' condition in parenthesis");
2212 parser->breaks.push_back(label);
2213 parser->continues.push_back(label);
2215 rv = parse_while_go(parser, block, out);
2218 if (parser->breaks.back() != label || parser->continues.back() != label) {
2219 parseerror(parser, "internal error: label stack corrupted");
2225 parser->breaks.pop_back();
2226 parser->continues.pop_back();
2231 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2234 ast_expression *cond, *ontrue;
2238 lex_ctx_t ctx = parser_ctx(parser);
2240 (void)block; /* not touching */
2242 /* parse into the expression */
2243 if (!parser_next(parser)) {
2244 parseerror(parser, "expected 'while' condition after opening paren");
2247 /* parse the condition */
2248 cond = parse_expression_leave(parser, false, true, false);
2252 if (parser->tok != ')') {
2253 parseerror(parser, "expected closing paren after 'while' condition");
2257 /* parse into the 'then' branch */
2258 if (!parser_next(parser)) {
2259 parseerror(parser, "expected while-loop body");
2263 if (!parse_statement_or_block(parser, &ontrue)) {
2268 cond = process_condition(parser, cond, &ifnot);
2273 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2274 *out = (ast_expression*)aloop;
2278 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2279 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2284 /* skip the 'do' and get the body */
2285 if (!parser_next(parser)) {
2286 if (OPTS_FLAG(LOOP_LABELS))
2287 parseerror(parser, "expected loop label or body");
2289 parseerror(parser, "expected loop body");
2293 if (parser->tok == ':') {
2294 if (!OPTS_FLAG(LOOP_LABELS))
2295 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2296 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2297 parseerror(parser, "expected loop label");
2300 label = util_strdup(parser_tokval(parser));
2301 if (!parser_next(parser)) {
2303 parseerror(parser, "expected loop body");
2308 parser->breaks.push_back(label);
2309 parser->continues.push_back(label);
2311 rv = parse_dowhile_go(parser, block, out);
2314 if (parser->breaks.back() != label || parser->continues.back() != label) {
2315 parseerror(parser, "internal error: label stack corrupted");
2318 * Test for NULL otherwise ast_delete dereferences null pointer
2326 parser->breaks.pop_back();
2327 parser->continues.pop_back();
2332 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2335 ast_expression *cond, *ontrue;
2339 lex_ctx_t ctx = parser_ctx(parser);
2341 (void)block; /* not touching */
2343 if (!parse_statement_or_block(parser, &ontrue))
2346 /* expect the "while" */
2347 if (parser->tok != TOKEN_KEYWORD ||
2348 strcmp(parser_tokval(parser), "while"))
2350 parseerror(parser, "expected 'while' and condition");
2355 /* skip the 'while' and check for opening paren */
2356 if (!parser_next(parser) || parser->tok != '(') {
2357 parseerror(parser, "expected 'while' condition in parenthesis");
2361 /* parse into the expression */
2362 if (!parser_next(parser)) {
2363 parseerror(parser, "expected 'while' condition after opening paren");
2367 /* parse the condition */
2368 cond = parse_expression_leave(parser, false, true, false);
2372 if (parser->tok != ')') {
2373 parseerror(parser, "expected closing paren after 'while' condition");
2379 if (!parser_next(parser) || parser->tok != ';') {
2380 parseerror(parser, "expected semicolon after condition");
2386 if (!parser_next(parser)) {
2387 parseerror(parser, "parse error");
2393 cond = process_condition(parser, cond, &ifnot);
2398 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2399 *out = (ast_expression*)aloop;
2403 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2404 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2409 /* skip the 'for' and check for opening paren */
2410 if (!parser_next(parser)) {
2411 if (OPTS_FLAG(LOOP_LABELS))
2412 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2414 parseerror(parser, "expected 'for' expressions in parenthesis");
2418 if (parser->tok == ':') {
2419 if (!OPTS_FLAG(LOOP_LABELS))
2420 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2421 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2422 parseerror(parser, "expected loop label");
2425 label = util_strdup(parser_tokval(parser));
2426 if (!parser_next(parser)) {
2428 parseerror(parser, "expected 'for' expressions in parenthesis");
2433 if (parser->tok != '(') {
2434 parseerror(parser, "expected 'for' expressions in parenthesis");
2438 parser->breaks.push_back(label);
2439 parser->continues.push_back(label);
2441 rv = parse_for_go(parser, block, out);
2444 if (parser->breaks.back() != label || parser->continues.back() != label) {
2445 parseerror(parser, "internal error: label stack corrupted");
2451 parser->breaks.pop_back();
2452 parser->continues.pop_back();
2456 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2459 ast_expression *initexpr, *cond, *increment, *ontrue;
2464 lex_ctx_t ctx = parser_ctx(parser);
2466 parser_enterblock(parser);
2473 /* parse into the expression */
2474 if (!parser_next(parser)) {
2475 parseerror(parser, "expected 'for' initializer after opening paren");
2480 if (parser->tok == TOKEN_IDENT)
2481 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2483 if (typevar || parser->tok == TOKEN_TYPENAME) {
2484 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2487 else if (parser->tok != ';')
2489 initexpr = parse_expression_leave(parser, false, false, false);
2493 /* move on to condition */
2494 if (parser->tok != ';') {
2495 parseerror(parser, "expected semicolon after for-loop initializer");
2499 if (!parser_next(parser)) {
2500 parseerror(parser, "expected for-loop condition");
2505 /* parse the condition */
2506 if (parser->tok != ';') {
2507 cond = parse_expression_leave(parser, false, true, false);
2512 /* move on to incrementor */
2513 if (parser->tok != ';') {
2514 parseerror(parser, "expected semicolon after for-loop initializer");
2517 if (!parser_next(parser)) {
2518 parseerror(parser, "expected for-loop condition");
2522 /* parse the incrementor */
2523 if (parser->tok != ')') {
2524 lex_ctx_t condctx = parser_ctx(parser);
2525 increment = parse_expression_leave(parser, false, false, false);
2528 if (!ast_side_effects(increment)) {
2529 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2535 if (parser->tok != ')') {
2536 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2539 /* parse into the 'then' branch */
2540 if (!parser_next(parser)) {
2541 parseerror(parser, "expected for-loop body");
2544 if (!parse_statement_or_block(parser, &ontrue))
2548 cond = process_condition(parser, cond, &ifnot);
2552 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2553 *out = (ast_expression*)aloop;
2555 if (!parser_leaveblock(parser)) {
2561 if (initexpr) ast_unref(initexpr);
2562 if (cond) ast_unref(cond);
2563 if (increment) ast_unref(increment);
2564 (void)!parser_leaveblock(parser);
2568 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2570 ast_expression *exp = NULL;
2571 ast_expression *var = NULL;
2572 ast_return *ret = NULL;
2573 ast_value *retval = parser->function->return_value;
2574 ast_value *expected = parser->function->vtype;
2576 lex_ctx_t ctx = parser_ctx(parser);
2578 (void)block; /* not touching */
2580 if (!parser_next(parser)) {
2581 parseerror(parser, "expected return expression");
2585 /* return assignments */
2586 if (parser->tok == '=') {
2587 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
2588 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
2592 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
2594 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
2595 parseerror(parser, "invalid return type: `%s'", ty1);
2599 if (!parser_next(parser)) {
2600 parseerror(parser, "expected return assignment expression");
2604 if (!(exp = parse_expression_leave(parser, false, false, false)))
2607 /* prepare the return value */
2609 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
2610 ast_type_adopt(retval, expected->expression.next);
2611 parser->function->return_value = retval;
2614 if (!ast_compare_type(exp, (ast_expression*)retval)) {
2615 char ty1[1024], ty2[1024];
2616 ast_type_to_string(exp, ty1, sizeof(ty1));
2617 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
2618 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
2621 /* store to 'return' local variable */
2622 var = (ast_expression*)ast_store_new(
2624 type_store_instr[expected->expression.next->vtype],
2625 (ast_expression*)retval, exp);
2632 if (parser->tok != ';')
2633 parseerror(parser, "missing semicolon after return assignment");
2634 else if (!parser_next(parser))
2635 parseerror(parser, "parse error after return assignment");
2641 if (parser->tok != ';') {
2642 exp = parse_expression(parser, false, false);
2646 if (exp->vtype != TYPE_NIL &&
2647 exp->vtype != ((ast_expression*)expected)->next->vtype)
2649 parseerror(parser, "return with invalid expression");
2652 ret = ast_return_new(ctx, exp);
2658 if (!parser_next(parser))
2659 parseerror(parser, "parse error");
2661 if (!retval && expected->expression.next->vtype != TYPE_VOID)
2663 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2665 ret = ast_return_new(ctx, (ast_expression*)retval);
2667 *out = (ast_expression*)ret;
2671 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2674 unsigned int levels = 0;
2675 lex_ctx_t ctx = parser_ctx(parser);
2676 auto &loops = (is_continue ? parser->continues : parser->breaks);
2678 (void)block; /* not touching */
2679 if (!parser_next(parser)) {
2680 parseerror(parser, "expected semicolon or loop label");
2684 if (loops.empty()) {
2686 parseerror(parser, "`continue` can only be used inside loops");
2688 parseerror(parser, "`break` can only be used inside loops or switches");
2691 if (parser->tok == TOKEN_IDENT) {
2692 if (!OPTS_FLAG(LOOP_LABELS))
2693 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2696 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2699 parseerror(parser, "no such loop to %s: `%s`",
2700 (is_continue ? "continue" : "break out of"),
2701 parser_tokval(parser));
2706 if (!parser_next(parser)) {
2707 parseerror(parser, "expected semicolon");
2712 if (parser->tok != ';') {
2713 parseerror(parser, "expected semicolon");
2717 if (!parser_next(parser))
2718 parseerror(parser, "parse error");
2720 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2724 /* returns true when it was a variable qualifier, false otherwise!
2725 * on error, cvq is set to CV_WRONG
2732 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2734 bool had_const = false;
2735 bool had_var = false;
2736 bool had_noref = false;
2737 bool had_attrib = false;
2738 bool had_static = false;
2741 static attribute_t attributes[] = {
2742 { "noreturn", AST_FLAG_NORETURN },
2743 { "inline", AST_FLAG_INLINE },
2744 { "eraseable", AST_FLAG_ERASEABLE },
2745 { "accumulate", AST_FLAG_ACCUMULATE },
2746 { "last", AST_FLAG_FINAL_DECL }
2753 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2755 /* parse an attribute */
2756 if (!parser_next(parser)) {
2757 parseerror(parser, "expected attribute after `[[`");
2762 for (i = 0; i < GMQCC_ARRAY_COUNT(attributes); i++) {
2763 if (!strcmp(parser_tokval(parser), attributes[i].name)) {
2764 flags |= attributes[i].flag;
2765 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2766 parseerror(parser, "`%s` attribute has no parameters, expected `]]`",
2767 attributes[i].name);
2775 if (i != GMQCC_ARRAY_COUNT(attributes))
2779 if (!strcmp(parser_tokval(parser), "noref")) {
2781 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2782 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2787 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
2788 flags |= AST_FLAG_ALIAS;
2791 if (!parser_next(parser)) {
2792 parseerror(parser, "parse error in attribute");
2796 if (parser->tok == '(') {
2797 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2798 parseerror(parser, "`alias` attribute missing parameter");
2802 *message = util_strdup(parser_tokval(parser));
2804 if (!parser_next(parser)) {
2805 parseerror(parser, "parse error in attribute");
2809 if (parser->tok != ')') {
2810 parseerror(parser, "`alias` attribute expected `)` after parameter");
2814 if (!parser_next(parser)) {
2815 parseerror(parser, "parse error in attribute");
2820 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2821 parseerror(parser, "`alias` attribute expected `]]`");
2825 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2826 flags |= AST_FLAG_DEPRECATED;
2829 if (!parser_next(parser)) {
2830 parseerror(parser, "parse error in attribute");
2834 if (parser->tok == '(') {
2835 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2836 parseerror(parser, "`deprecated` attribute missing parameter");
2840 *message = util_strdup(parser_tokval(parser));
2842 if (!parser_next(parser)) {
2843 parseerror(parser, "parse error in attribute");
2847 if(parser->tok != ')') {
2848 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2852 if (!parser_next(parser)) {
2853 parseerror(parser, "parse error in attribute");
2858 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2859 parseerror(parser, "`deprecated` attribute expected `]]`");
2862 if (*message) mem_d(*message);
2868 else if (!strcmp(parser_tokval(parser), "coverage") && !(flags & AST_FLAG_COVERAGE)) {
2869 flags |= AST_FLAG_COVERAGE;
2870 if (!parser_next(parser)) {
2872 parseerror(parser, "parse error in coverage attribute");
2876 if (parser->tok == '(') {
2877 if (!parser_next(parser)) {
2879 parseerror(parser, "invalid parameter for coverage() attribute\n"
2880 "valid are: block");
2884 if (parser->tok != ')') {
2886 if (parser->tok != TOKEN_IDENT)
2887 goto bad_coverage_arg;
2888 if (!strcmp(parser_tokval(parser), "block"))
2889 flags |= AST_FLAG_BLOCK_COVERAGE;
2890 else if (!strcmp(parser_tokval(parser), "none"))
2891 flags &= ~(AST_FLAG_COVERAGE_MASK);
2893 goto bad_coverage_arg;
2894 if (!parser_next(parser))
2895 goto error_in_coverage;
2896 if (parser->tok == ',') {
2897 if (!parser_next(parser))
2898 goto error_in_coverage;
2900 } while (parser->tok != ')');
2902 if (parser->tok != ')' || !parser_next(parser))
2903 goto error_in_coverage;
2905 /* without parameter [[coverage]] equals [[coverage(block)]] */
2906 flags |= AST_FLAG_BLOCK_COVERAGE;
2911 /* Skip tokens until we hit a ]] */
2912 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2913 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2914 if (!parser_next(parser)) {
2915 parseerror(parser, "error inside attribute");
2922 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2924 else if (!strcmp(parser_tokval(parser), "const"))
2926 else if (!strcmp(parser_tokval(parser), "var"))
2928 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2930 else if (!strcmp(parser_tokval(parser), "noref"))
2932 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2939 if (!parser_next(parser))
2949 *is_static = had_static;
2953 parseerror(parser, "parse error after variable qualifier");
2958 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2959 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2964 /* skip the 'while' and get the body */
2965 if (!parser_next(parser)) {
2966 if (OPTS_FLAG(LOOP_LABELS))
2967 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2969 parseerror(parser, "expected 'switch' operand in parenthesis");
2973 if (parser->tok == ':') {
2974 if (!OPTS_FLAG(LOOP_LABELS))
2975 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2976 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2977 parseerror(parser, "expected loop label");
2980 label = util_strdup(parser_tokval(parser));
2981 if (!parser_next(parser)) {
2983 parseerror(parser, "expected 'switch' operand in parenthesis");
2988 if (parser->tok != '(') {
2989 parseerror(parser, "expected 'switch' operand in parenthesis");
2993 parser->breaks.push_back(label);
2995 rv = parse_switch_go(parser, block, out);
2998 if (parser->breaks.back() != label) {
2999 parseerror(parser, "internal error: label stack corrupted");
3005 parser->breaks.pop_back();
3010 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3012 ast_expression *operand;
3015 ast_switch *switchnode;
3016 ast_switch_case swcase;
3019 bool noref, is_static;
3020 uint32_t qflags = 0;
3022 lex_ctx_t ctx = parser_ctx(parser);
3024 (void)block; /* not touching */
3027 /* parse into the expression */
3028 if (!parser_next(parser)) {
3029 parseerror(parser, "expected switch operand");
3032 /* parse the operand */
3033 operand = parse_expression_leave(parser, false, false, false);
3037 switchnode = ast_switch_new(ctx, operand);
3040 if (parser->tok != ')') {
3041 ast_delete(switchnode);
3042 parseerror(parser, "expected closing paren after 'switch' operand");
3046 /* parse over the opening paren */
3047 if (!parser_next(parser) || parser->tok != '{') {
3048 ast_delete(switchnode);
3049 parseerror(parser, "expected list of cases");
3053 if (!parser_next(parser)) {
3054 ast_delete(switchnode);
3055 parseerror(parser, "expected 'case' or 'default'");
3059 /* new block; allow some variables to be declared here */
3060 parser_enterblock(parser);
3063 if (parser->tok == TOKEN_IDENT)
3064 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3065 if (typevar || parser->tok == TOKEN_TYPENAME) {
3066 if (!parse_variable(parser, block, true, CV_NONE, typevar, false, false, 0, NULL)) {
3067 ast_delete(switchnode);
3072 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3074 if (cvq == CV_WRONG) {
3075 ast_delete(switchnode);
3078 if (!parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, NULL)) {
3079 ast_delete(switchnode);
3088 while (parser->tok != '}') {
3089 ast_block *caseblock;
3091 if (!strcmp(parser_tokval(parser), "case")) {
3092 if (!parser_next(parser)) {
3093 ast_delete(switchnode);
3094 parseerror(parser, "expected expression for case");
3097 swcase.value = parse_expression_leave(parser, false, false, false);
3098 if (!swcase.value) {
3099 ast_delete(switchnode);
3100 parseerror(parser, "expected expression for case");
3103 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3104 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3105 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3111 else if (!strcmp(parser_tokval(parser), "default")) {
3112 swcase.value = NULL;
3113 if (!parser_next(parser)) {
3114 ast_delete(switchnode);
3115 parseerror(parser, "expected colon");
3120 ast_delete(switchnode);
3121 parseerror(parser, "expected 'case' or 'default'");
3125 /* Now the colon and body */
3126 if (parser->tok != ':') {
3127 if (swcase.value) ast_unref(swcase.value);
3128 ast_delete(switchnode);
3129 parseerror(parser, "expected colon");
3133 if (!parser_next(parser)) {
3134 if (swcase.value) ast_unref(swcase.value);
3135 ast_delete(switchnode);
3136 parseerror(parser, "expected statements or case");
3139 caseblock = ast_block_new(parser_ctx(parser));
3141 if (swcase.value) ast_unref(swcase.value);
3142 ast_delete(switchnode);
3145 swcase.code = (ast_expression*)caseblock;
3146 vec_push(switchnode->cases, swcase);
3148 ast_expression *expr;
3149 if (parser->tok == '}')
3151 if (parser->tok == TOKEN_KEYWORD) {
3152 if (!strcmp(parser_tokval(parser), "case") ||
3153 !strcmp(parser_tokval(parser), "default"))
3158 if (!parse_statement(parser, caseblock, &expr, true)) {
3159 ast_delete(switchnode);
3164 if (!ast_block_add_expr(caseblock, expr)) {
3165 ast_delete(switchnode);
3171 parser_leaveblock(parser);
3174 if (parser->tok != '}') {
3175 ast_delete(switchnode);
3176 parseerror(parser, "expected closing paren of case list");
3179 if (!parser_next(parser)) {
3180 ast_delete(switchnode);
3181 parseerror(parser, "parse error after switch");
3184 *out = (ast_expression*)switchnode;
3188 /* parse computed goto sides */
3189 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3190 ast_expression *on_true;
3191 ast_expression *on_false;
3192 ast_expression *cond;
3197 if (ast_istype(*side, ast_ternary)) {
3198 ast_ternary *tern = (ast_ternary*)*side;
3199 on_true = parse_goto_computed(parser, &tern->on_true);
3200 on_false = parse_goto_computed(parser, &tern->on_false);
3202 if (!on_true || !on_false) {
3203 parseerror(parser, "expected label or expression in ternary");
3204 if (on_true) ast_unref(on_true);
3205 if (on_false) ast_unref(on_false);
3213 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3214 } else if (ast_istype(*side, ast_label)) {
3215 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3216 ast_goto_set_label(gt, ((ast_label*)*side));
3218 return (ast_expression*)gt;
3223 static bool parse_goto(parser_t *parser, ast_expression **out)
3225 ast_goto *gt = NULL;
3226 ast_expression *lbl;
3228 if (!parser_next(parser))
3231 if (parser->tok != TOKEN_IDENT) {
3232 ast_expression *expression;
3234 /* could be an expression i.e computed goto :-) */
3235 if (parser->tok != '(') {
3236 parseerror(parser, "expected label name after `goto`");
3240 /* failed to parse expression for goto */
3241 if (!(expression = parse_expression(parser, false, true)) ||
3242 !(*out = parse_goto_computed(parser, &expression))) {
3243 parseerror(parser, "invalid goto expression");
3245 ast_unref(expression);
3252 /* not computed goto */
3253 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3254 lbl = parser_find_label(parser, gt->name);
3256 if (!ast_istype(lbl, ast_label)) {
3257 parseerror(parser, "internal error: label is not an ast_label");
3261 ast_goto_set_label(gt, (ast_label*)lbl);
3264 parser->gotos.push_back(gt);
3266 if (!parser_next(parser) || parser->tok != ';') {
3267 parseerror(parser, "semicolon expected after goto label");
3270 if (!parser_next(parser)) {
3271 parseerror(parser, "parse error after goto");
3275 *out = (ast_expression*)gt;
3279 static bool parse_skipwhite(parser_t *parser)
3282 if (!parser_next(parser))
3284 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3285 return parser->tok < TOKEN_ERROR;
3288 static bool parse_eol(parser_t *parser)
3290 if (!parse_skipwhite(parser))
3292 return parser->tok == TOKEN_EOL;
3295 static bool parse_pragma_do(parser_t *parser)
3297 if (!parser_next(parser) ||
3298 parser->tok != TOKEN_IDENT ||
3299 strcmp(parser_tokval(parser), "pragma"))
3301 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3304 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3305 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3309 if (!strcmp(parser_tokval(parser), "noref")) {
3310 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3311 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3314 parser->noref = !!parser_token(parser)->constval.i;
3315 if (!parse_eol(parser)) {
3316 parseerror(parser, "parse error after `noref` pragma");
3322 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3325 while (!parse_eol(parser)) {
3326 parser_next(parser);
3335 static bool parse_pragma(parser_t *parser)
3338 parser->lex->flags.preprocessing = true;
3339 parser->lex->flags.mergelines = true;
3340 rv = parse_pragma_do(parser);
3341 if (parser->tok != TOKEN_EOL) {
3342 parseerror(parser, "junk after pragma");
3345 parser->lex->flags.preprocessing = false;
3346 parser->lex->flags.mergelines = false;
3347 if (!parser_next(parser)) {
3348 parseerror(parser, "parse error after pragma");
3354 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3356 bool noref, is_static;
3358 uint32_t qflags = 0;
3359 ast_value *typevar = NULL;
3360 char *vstring = NULL;
3364 if (parser->tok == TOKEN_IDENT)
3365 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3367 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.' || parser->tok == TOKEN_DOTS)
3369 /* local variable */
3371 parseerror(parser, "cannot declare a variable from here");
3374 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3375 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3378 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3382 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3384 if (cvq == CV_WRONG)
3386 return parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, vstring);
3388 else if (parser->tok == TOKEN_KEYWORD)
3390 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3395 if (!parser_next(parser)) {
3396 parseerror(parser, "parse error after __builtin_debug_printtype");
3400 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3402 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3403 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3404 if (!parser_next(parser)) {
3405 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3411 if (!parse_statement(parser, block, out, allow_cases))
3414 con_out("__builtin_debug_printtype: got no output node\n");
3417 ast_type_to_string(*out, ty, sizeof(ty));
3418 con_out("__builtin_debug_printtype: `%s`\n", ty);
3423 else if (!strcmp(parser_tokval(parser), "return"))
3425 return parse_return(parser, block, out);
3427 else if (!strcmp(parser_tokval(parser), "if"))
3429 return parse_if(parser, block, out);
3431 else if (!strcmp(parser_tokval(parser), "while"))
3433 return parse_while(parser, block, out);
3435 else if (!strcmp(parser_tokval(parser), "do"))
3437 return parse_dowhile(parser, block, out);
3439 else if (!strcmp(parser_tokval(parser), "for"))
3441 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3442 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3445 return parse_for(parser, block, out);
3447 else if (!strcmp(parser_tokval(parser), "break"))
3449 return parse_break_continue(parser, block, out, false);
3451 else if (!strcmp(parser_tokval(parser), "continue"))
3453 return parse_break_continue(parser, block, out, true);
3455 else if (!strcmp(parser_tokval(parser), "switch"))
3457 return parse_switch(parser, block, out);
<