9 #define PARSER_HT_LOCALS 2
10 #define PARSER_HT_SIZE 512
11 #define TYPEDEF_HT_SIZE 512
13 static void parser_enterblock(parser_t *parser);
14 static bool parser_leaveblock(parser_t *parser);
15 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
16 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
17 static bool parse_typedef(parser_t *parser);
18 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);
19 static ast_block* parse_block(parser_t *parser);
20 static bool parse_block_into(parser_t *parser, ast_block *block);
21 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
22 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
23 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
24 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
25 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname);
26 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname);
27 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef, bool *is_vararg);
29 static void parseerror(parser_t *parser, const char *fmt, ...)
33 vcompile_error(parser->lex->tok.ctx, fmt, ap);
37 /* returns true if it counts as an error */
38 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
43 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
48 /**********************************************************************
52 static bool parser_next(parser_t *parser)
54 /* lex_do kills the previous token */
55 parser->tok = lex_do(parser->lex);
56 if (parser->tok == TOKEN_EOF)
58 if (parser->tok >= TOKEN_ERROR) {
59 parseerror(parser, "lex error");
65 #define parser_tokval(p) ((p)->lex->tok.value)
66 #define parser_token(p) (&((p)->lex->tok))
68 char *parser_strdup(const char *str)
71 /* actually dup empty strings */
72 char *out = (char*)mem_a(1);
76 return util_strdup(str);
79 static ast_expression* parser_find_field(parser_t *parser, const char *name)
81 return ( ast_expression*)util_htget(parser->htfields, name);
84 static ast_expression* parser_find_label(parser_t *parser, const char *name)
86 for (auto &it : parser->labels)
87 if (!strcmp(it->name, name))
88 return (ast_expression*)it;
92 ast_expression* parser_find_global(parser_t *parser, const char *name)
94 ast_expression *var = (ast_expression*)util_htget(parser->aliases, parser_tokval(parser));
97 return (ast_expression*)util_htget(parser->htglobals, name);
100 static ast_expression* parser_find_param(parser_t *parser, const char *name)
103 if (!parser->function)
105 fun = parser->function->vtype;
106 for (auto &it : fun->expression.params) {
107 if (!strcmp(it->name, name))
108 return (ast_expression*)it;
113 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
118 hash = util_hthash(parser->htglobals, name);
121 for (i = vec_size(parser->variables); i > upto;) {
123 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
127 return parser_find_param(parser, name);
130 static ast_expression* parser_find_var(parser_t *parser, const char *name)
134 v = parser_find_local(parser, name, 0, &dummy);
135 if (!v) v = parser_find_global(parser, name);
139 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
143 hash = util_hthash(parser->typedefs[0], name);
145 for (i = vec_size(parser->typedefs); i > upto;) {
147 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
154 size_t etype; /* 0 = expression, others are operators */
158 ast_block *block; /* for commas and function calls */
171 std::vector<sy_elem> out;
172 std::vector<sy_elem> ops;
173 std::vector<size_t> argc;
174 std::vector<unsigned int> paren;
177 static sy_elem syexp(lex_ctx_t ctx, ast_expression *v) {
188 static sy_elem syblock(lex_ctx_t ctx, ast_block *v) {
192 e.out = (ast_expression*)v;
199 static sy_elem syop(lex_ctx_t ctx, const oper_info *op) {
201 e.etype = 1 + (op - operators);
210 static sy_elem syparen(lex_ctx_t ctx, size_t off) {
221 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
222 * so we need to rotate it to become ent.(foo[n]).
224 static bool rotate_entfield_array_index_nodes(ast_expression **out)
226 ast_array_index *index, *oldindex;
227 ast_entfield *entfield;
231 ast_expression *entity;
233 lex_ctx_t ctx = ast_ctx(*out);
235 if (!ast_istype(*out, ast_array_index))
237 index = (ast_array_index*)*out;
239 if (!ast_istype(index->array, ast_entfield))
241 entfield = (ast_entfield*)index->array;
243 if (!ast_istype(entfield->field, ast_value))
245 field = (ast_value*)entfield->field;
248 entity = entfield->entity;
252 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
253 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
254 *out = (ast_expression*)entfield;
256 oldindex->array = nullptr;
257 oldindex->index = nullptr;
258 ast_delete(oldindex);
263 static bool check_write_to(lex_ctx_t ctx, ast_expression *expr)
265 if (ast_istype(expr, ast_value)) {
266 ast_value *val = (ast_value*)expr;
267 if (val->cvq == CV_CONST) {
268 if (val->name[0] == '#') {
269 compile_error(ctx, "invalid assignment to a literal constant");
273 * To work around quakeworld we must elide the error and make it
276 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_QCC)
277 compile_error(ctx, "assignment to constant `%s`", val->name);
279 (void)!compile_warning(ctx, WARN_CONST_OVERWRITE, "assignment to constant `%s`", val->name);
286 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
290 ast_expression *out = nullptr;
291 ast_expression *exprs[3];
292 ast_block *blocks[3];
293 ast_binstore *asbinstore;
294 size_t i, assignop, addop, subop;
295 qcint_t generated_op = 0;
300 if (sy->ops.empty()) {
301 parseerror(parser, "internal error: missing operator");
305 if (sy->ops.back().isparen) {
306 parseerror(parser, "unmatched parenthesis");
310 op = &operators[sy->ops.back().etype - 1];
311 ctx = sy->ops.back().ctx;
313 if (sy->out.size() < op->operands) {
314 if (op->flags & OP_PREFIX)
315 compile_error(ctx, "expected expression after unary operator `%s`", op->op, (int)op->id);
316 else /* this should have errored previously already */
317 compile_error(ctx, "expected expression after operator `%s`", op->op, (int)op->id);
323 /* op(:?) has no input and no output */
327 sy->out.erase(sy->out.end() - op->operands, sy->out.end());
328 for (i = 0; i < op->operands; ++i) {
329 exprs[i] = sy->out[sy->out.size()+i].out;
330 blocks[i] = sy->out[sy->out.size()+i].block;
332 if (exprs[i]->vtype == TYPE_NOEXPR &&
333 !(i != 0 && op->id == opid2('?',':')) &&
334 !(i == 1 && op->id == opid1('.')))
336 if (ast_istype(exprs[i], ast_label))
337 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
339 compile_error(ast_ctx(exprs[i]), "not an expression");
340 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
344 if (blocks[0] && blocks[0]->exprs.empty() && op->id != opid1(',')) {
345 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
349 #define NotSameType(T) \
350 (exprs[0]->vtype != exprs[1]->vtype || \
351 exprs[0]->vtype != T)
356 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
360 if (exprs[0]->vtype == TYPE_VECTOR &&
361 exprs[1]->vtype == TYPE_NOEXPR)
363 if (exprs[1] == (ast_expression*)parser->const_vec[0])
364 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, nullptr);
365 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
366 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, nullptr);
367 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
368 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, nullptr);
370 compile_error(ctx, "access to invalid vector component");
374 else if (exprs[0]->vtype == TYPE_ENTITY) {
375 if (exprs[1]->vtype != TYPE_FIELD) {
376 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
379 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
381 else if (exprs[0]->vtype == TYPE_VECTOR) {
382 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
386 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
392 if (exprs[0]->vtype != TYPE_ARRAY &&
393 !(exprs[0]->vtype == TYPE_FIELD &&
394 exprs[0]->next->vtype == TYPE_ARRAY))
396 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
397 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
400 if (exprs[1]->vtype != TYPE_FLOAT) {
401 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
402 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
405 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
406 rotate_entfield_array_index_nodes(&out);
410 if (sy->paren.size() && sy->paren.back() == PAREN_FUNC) {
411 sy->out.push_back(syexp(ctx, exprs[0]));
412 sy->out.push_back(syexp(ctx, exprs[1]));
417 if (!ast_block_add_expr(blocks[0], exprs[1]))
420 blocks[0] = ast_block_new(ctx);
421 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
422 !ast_block_add_expr(blocks[0], exprs[1]))
427 ast_block_set_type(blocks[0], exprs[1]);
429 sy->out.push_back(syblock(ctx, blocks[0]));
436 if ((out = parser->m_fold.op(op, exprs)))
439 if (exprs[0]->vtype != TYPE_FLOAT &&
440 exprs[0]->vtype != TYPE_VECTOR) {
441 compile_error(ctx, "invalid types used in unary expression: cannot negate type %s",
442 type_name[exprs[0]->vtype]);
445 if (exprs[0]->vtype == TYPE_FLOAT)
446 out = (ast_expression*)ast_unary_new(ctx, VINSTR_NEG_F, exprs[0]);
448 out = (ast_expression*)ast_unary_new(ctx, VINSTR_NEG_V, exprs[0]);
452 if (!(out = parser->m_fold.op(op, exprs))) {
453 switch (exprs[0]->vtype) {
455 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
458 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
461 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
462 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
464 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
466 /* we don't constant-fold NOT for these types */
468 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
471 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
474 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
475 type_name[exprs[0]->vtype]);
482 if (exprs[0]->vtype != exprs[1]->vtype ||
483 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
485 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
486 type_name[exprs[0]->vtype],
487 type_name[exprs[1]->vtype]);
490 if (!(out = parser->m_fold.op(op, exprs))) {
491 switch (exprs[0]->vtype) {
493 out = fold::binary(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
496 out = fold::binary(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
499 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
500 type_name[exprs[0]->vtype],
501 type_name[exprs[1]->vtype]);
507 if (exprs[0]->vtype != exprs[1]->vtype ||
508 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT))
510 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
511 type_name[exprs[1]->vtype],
512 type_name[exprs[0]->vtype]);
515 if (!(out = parser->m_fold.op(op, exprs))) {
516 switch (exprs[0]->vtype) {
518 out = fold::binary(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
521 out = fold::binary(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
524 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
525 type_name[exprs[1]->vtype],
526 type_name[exprs[0]->vtype]);
532 if (exprs[0]->vtype != exprs[1]->vtype &&
533 !(exprs[0]->vtype == TYPE_VECTOR &&
534 exprs[1]->vtype == TYPE_FLOAT) &&
535 !(exprs[1]->vtype == TYPE_VECTOR &&
536 exprs[0]->vtype == TYPE_FLOAT)
539 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
540 type_name[exprs[1]->vtype],
541 type_name[exprs[0]->vtype]);
544 if (!(out = parser->m_fold.op(op, exprs))) {
545 switch (exprs[0]->vtype) {
547 if (exprs[1]->vtype == TYPE_VECTOR)
548 out = fold::binary(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
550 out = fold::binary(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
553 if (exprs[1]->vtype == TYPE_FLOAT)
554 out = fold::binary(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
556 out = fold::binary(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
559 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
560 type_name[exprs[1]->vtype],
561 type_name[exprs[0]->vtype]);
568 if (exprs[1]->vtype != TYPE_FLOAT) {
569 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
570 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
571 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
574 if (!(out = parser->m_fold.op(op, exprs))) {
575 if (exprs[0]->vtype == TYPE_FLOAT)
576 out = fold::binary(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
578 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
579 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
580 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
587 if (NotSameType(TYPE_FLOAT)) {
588 compile_error(ctx, "invalid types used in expression: cannot perform modulo operation between types %s and %s",
589 type_name[exprs[0]->vtype],
590 type_name[exprs[1]->vtype]);
592 } else if (!(out = parser->m_fold.op(op, exprs))) {
593 /* generate a call to __builtin_mod */
594 ast_expression *mod = parser->m_intrin.func("mod");
595 ast_call *call = nullptr;
596 if (!mod) return false; /* can return null for missing floor */
598 call = ast_call_new(parser_ctx(parser), mod);
599 call->params.push_back(exprs[0]);
600 call->params.push_back(exprs[1]);
602 out = (ast_expression*)call;
607 compile_error(ctx, "%= is unimplemented");
613 if ( !(exprs[0]->vtype == TYPE_FLOAT && exprs[1]->vtype == TYPE_FLOAT) &&
614 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_FLOAT) &&
615 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_VECTOR))
617 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
618 type_name[exprs[0]->vtype],
619 type_name[exprs[1]->vtype]);
623 if (!(out = parser->m_fold.op(op, exprs))) {
625 * IF the first expression is float, the following will be too
626 * since scalar ^ vector is not allowed.
628 if (exprs[0]->vtype == TYPE_FLOAT) {
629 out = fold::binary(ctx,
630 (op->id == opid1('^') ? VINSTR_BITXOR : op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
634 * The first is a vector: vector is allowed to bitop with vector and
635 * with scalar, branch here for the second operand.
637 if (exprs[1]->vtype == TYPE_VECTOR) {
639 * Bitop all the values of the vector components against the
640 * vectors components in question.
642 out = fold::binary(ctx,
643 (op->id == opid1('^') ? VINSTR_BITXOR_V : op->id == opid1('|') ? VINSTR_BITOR_V : VINSTR_BITAND_V),
646 out = fold::binary(ctx,
647 (op->id == opid1('^') ? VINSTR_BITXOR_VF : op->id == opid1('|') ? VINSTR_BITOR_VF : VINSTR_BITAND_VF),
656 if (NotSameType(TYPE_FLOAT)) {
657 compile_error(ctx, "invalid types used in expression: cannot perform shift between types %s and %s",
658 type_name[exprs[0]->vtype],
659 type_name[exprs[1]->vtype]);
663 if (!(out = parser->m_fold.op(op, exprs))) {
664 ast_expression *shift = parser->m_intrin.func((op->id == opid2('<','<')) ? "__builtin_lshift" : "__builtin_rshift");
665 ast_call *call = ast_call_new(parser_ctx(parser), shift);
666 call->params.push_back(exprs[0]);
667 call->params.push_back(exprs[1]);
668 out = (ast_expression*)call;
672 case opid3('<','<','='):
673 case opid3('>','>','='):
674 if (NotSameType(TYPE_FLOAT)) {
675 compile_error(ctx, "invalid types used in expression: cannot perform shift operation between types %s and %s",
676 type_name[exprs[0]->vtype],
677 type_name[exprs[1]->vtype]);
681 if(!(out = parser->m_fold.op(op, exprs))) {
682 ast_expression *shift = parser->m_intrin.func((op->id == opid3('<','<','=')) ? "__builtin_lshift" : "__builtin_rshift");
683 ast_call *call = ast_call_new(parser_ctx(parser), shift);
684 call->params.push_back(exprs[0]);
685 call->params.push_back(exprs[1]);
686 out = (ast_expression*)ast_store_new(
690 (ast_expression*)call
697 generated_op += 1; /* INSTR_OR */
699 generated_op += INSTR_AND;
700 if (!(out = parser->m_fold.op(op, exprs))) {
701 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
702 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
703 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
704 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
707 for (i = 0; i < 2; ++i) {
708 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->vtype == TYPE_VECTOR) {
709 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
711 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
713 exprs[i] = out; out = nullptr;
714 if (OPTS_FLAG(PERL_LOGIC)) {
715 /* here we want to keep the right expressions' type */
719 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->vtype == TYPE_STRING) {
720 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
722 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
724 exprs[i] = out; out = nullptr;
725 if (OPTS_FLAG(PERL_LOGIC)) {
726 /* here we want to keep the right expressions' type */
731 out = fold::binary(ctx, generated_op, exprs[0], exprs[1]);
736 if (sy->paren.back() != PAREN_TERNARY2) {
737 compile_error(ctx, "mismatched parenthesis/ternary");
740 sy->paren.pop_back();
741 if (!ast_compare_type(exprs[1], exprs[2])) {
742 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
743 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
744 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
747 if (!(out = parser->m_fold.op(op, exprs)))
748 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
751 case opid2('*', '*'):
752 if (NotSameType(TYPE_FLOAT)) {
753 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
754 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
755 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
760 if (!(out = parser->m_fold.op(op, exprs))) {
761 ast_call *gencall = ast_call_new(parser_ctx(parser), parser->m_intrin.func("pow"));
762 gencall->params.push_back(exprs[0]);
763 gencall->params.push_back(exprs[1]);
764 out = (ast_expression*)gencall;
768 case opid2('>', '<'):
769 if (NotSameType(TYPE_VECTOR)) {
770 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
771 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
772 compile_error(ctx, "invalid types used in cross product: %s and %s",
777 if (!(out = parser->m_fold.op(op, exprs))) {
788 case opid3('<','=','>'): /* -1, 0, or 1 */
789 if (NotSameType(TYPE_FLOAT)) {
790 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
791 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
792 compile_error(ctx, "invalid types used in comparision: %s and %s",
798 if (!(out = parser->m_fold.op(op, exprs))) {
799 /* This whole block is NOT fold_binary safe */
800 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
802 eq->refs = AST_REF_NONE;
805 out = (ast_expression*)ast_ternary_new(ctx,
806 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
808 (ast_expression*)parser->m_fold.imm_float(2),
811 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
813 (ast_expression*)parser->m_fold.imm_float(0),
816 (ast_expression*)parser->m_fold.imm_float(1)
826 generated_op += 1; /* INSTR_GT */
828 generated_op += 1; /* INSTR_LT */
829 case opid2('>', '='):
830 generated_op += 1; /* INSTR_GE */
831 case opid2('<', '='):
832 generated_op += INSTR_LE;
833 if (NotSameType(TYPE_FLOAT)) {
834 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
835 type_name[exprs[0]->vtype],
836 type_name[exprs[1]->vtype]);
839 if (!(out = parser->m_fold.op(op, exprs)))
840 out = fold::binary(ctx, generated_op, exprs[0], exprs[1]);
842 case opid2('!', '='):
843 if (exprs[0]->vtype != exprs[1]->vtype) {
844 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
845 type_name[exprs[0]->vtype],
846 type_name[exprs[1]->vtype]);
849 if (!(out = parser->m_fold.op(op, exprs)))
850 out = fold::binary(ctx, type_ne_instr[exprs[0]->vtype], exprs[0], exprs[1]);
852 case opid2('=', '='):
853 if (exprs[0]->vtype != exprs[1]->vtype) {
854 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
855 type_name[exprs[0]->vtype],
856 type_name[exprs[1]->vtype]);
859 if (!(out = parser->m_fold.op(op, exprs)))
860 out = fold::binary(ctx, type_eq_instr[exprs[0]->vtype], exprs[0], exprs[1]);
864 if (ast_istype(exprs[0], ast_entfield)) {
865 ast_expression *field = ((ast_entfield*)exprs[0])->field;
866 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
867 exprs[0]->vtype == TYPE_FIELD &&
868 exprs[0]->next->vtype == TYPE_VECTOR)
870 assignop = type_storep_instr[TYPE_VECTOR];
873 assignop = type_storep_instr[exprs[0]->vtype];
874 if (assignop == VINSTR_END || !ast_compare_type(field->next, exprs[1]))
876 ast_type_to_string(field->next, ty1, sizeof(ty1));
877 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
878 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
879 field->next->vtype == TYPE_FUNCTION &&
880 exprs[1]->vtype == TYPE_FUNCTION)
882 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
883 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
886 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
891 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
892 exprs[0]->vtype == TYPE_FIELD &&
893 exprs[0]->next->vtype == TYPE_VECTOR)
895 assignop = type_store_instr[TYPE_VECTOR];
898 assignop = type_store_instr[exprs[0]->vtype];
901 if (assignop == VINSTR_END) {
902 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
903 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
904 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
906 else if (!ast_compare_type(exprs[0], exprs[1]))
908 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
909 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
910 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
911 exprs[0]->vtype == TYPE_FUNCTION &&
912 exprs[1]->vtype == TYPE_FUNCTION)
914 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
915 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
918 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
921 (void)check_write_to(ctx, exprs[0]);
922 /* When we're a vector of part of an entity field we use STOREP */
923 if (ast_istype(exprs[0], ast_member) && ast_istype(((ast_member*)exprs[0])->owner, ast_entfield))
924 assignop = INSTR_STOREP_F;
925 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
927 case opid3('+','+','P'):
928 case opid3('-','-','P'):
930 if (exprs[0]->vtype != TYPE_FLOAT) {
931 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
932 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
935 if (op->id == opid3('+','+','P'))
939 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
940 if (ast_istype(exprs[0], ast_entfield)) {
941 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
943 (ast_expression*)parser->m_fold.imm_float(1));
945 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
947 (ast_expression*)parser->m_fold.imm_float(1));
950 case opid3('S','+','+'):
951 case opid3('S','-','-'):
953 if (exprs[0]->vtype != TYPE_FLOAT) {
954 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
955 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
958 if (op->id == opid3('S','+','+')) {
965 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
966 if (ast_istype(exprs[0], ast_entfield)) {
967 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
969 (ast_expression*)parser->m_fold.imm_float(1));
971 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
973 (ast_expression*)parser->m_fold.imm_float(1));
977 out = fold::binary(ctx, subop,
979 (ast_expression*)parser->m_fold.imm_float(1));
984 if (exprs[0]->vtype != exprs[1]->vtype ||
985 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
987 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
988 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
989 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
993 (void)check_write_to(ctx, exprs[0]);
994 if (ast_istype(exprs[0], ast_entfield))
995 assignop = type_storep_instr[exprs[0]->vtype];
997 assignop = type_store_instr[exprs[0]->vtype];
998 switch (exprs[0]->vtype) {
1000 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1001 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1002 exprs[0], exprs[1]);
1005 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1006 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1007 exprs[0], exprs[1]);
1010 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1011 type_name[exprs[0]->vtype],
1012 type_name[exprs[1]->vtype]);
1016 case opid2('*','='):
1017 case opid2('/','='):
1018 if (exprs[1]->vtype != TYPE_FLOAT ||
1019 !(exprs[0]->vtype == TYPE_FLOAT ||
1020 exprs[0]->vtype == TYPE_VECTOR))
1022 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1023 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1024 compile_error(ctx, "invalid types used in expression: %s and %s",
1028 (void)check_write_to(ctx, exprs[0]);
1029 if (ast_istype(exprs[0], ast_entfield))
1030 assignop = type_storep_instr[exprs[0]->vtype];
1032 assignop = type_store_instr[exprs[0]->vtype];
1033 switch (exprs[0]->vtype) {
1035 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1036 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1037 exprs[0], exprs[1]);
1040 if (op->id == opid2('*','=')) {
1041 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1042 exprs[0], exprs[1]);
1044 out = fold::binary(ctx, INSTR_DIV_F,
1045 (ast_expression*)parser->m_fold.imm_float(1),
1048 compile_error(ctx, "internal error: failed to generate division");
1051 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1056 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1057 type_name[exprs[0]->vtype],
1058 type_name[exprs[1]->vtype]);
1062 case opid2('&','='):
1063 case opid2('|','='):
1064 case opid2('^','='):
1065 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1066 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1067 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1068 compile_error(ctx, "invalid types used in expression: %s and %s",
1072 (void)check_write_to(ctx, exprs[0]);
1073 if (ast_istype(exprs[0], ast_entfield))
1074 assignop = type_storep_instr[exprs[0]->vtype];
1076 assignop = type_store_instr[exprs[0]->vtype];
1077 if (exprs[0]->vtype == TYPE_FLOAT)
1078 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1079 (op->id == opid2('^','=') ? VINSTR_BITXOR : op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1080 exprs[0], exprs[1]);
1082 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1083 (op->id == opid2('^','=') ? VINSTR_BITXOR_V : op->id == opid2('&','=') ? VINSTR_BITAND_V : VINSTR_BITOR_V),
1084 exprs[0], exprs[1]);
1086 case opid3('&','~','='):
1087 /* This is like: a &= ~(b);
1088 * But QC has no bitwise-not, so we implement it as
1091 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1092 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1093 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1094 compile_error(ctx, "invalid types used in expression: %s and %s",
1098 if (ast_istype(exprs[0], ast_entfield))
1099 assignop = type_storep_instr[exprs[0]->vtype];
1101 assignop = type_store_instr[exprs[0]->vtype];
1102 if (exprs[0]->vtype == TYPE_FLOAT)
1103 out = fold::binary(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1105 out = fold::binary(ctx, VINSTR_BITAND_V, exprs[0], exprs[1]);
1108 (void)check_write_to(ctx, exprs[0]);
1109 if (exprs[0]->vtype == TYPE_FLOAT)
1110 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1112 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_V, exprs[0], out);
1113 asbinstore->keep_dest = true;
1114 out = (ast_expression*)asbinstore;
1117 case opid3('l', 'e', 'n'):
1118 if (exprs[0]->vtype != TYPE_STRING && exprs[0]->vtype != TYPE_ARRAY) {
1119 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1120 compile_error(ast_ctx(exprs[0]), "invalid type for length operator: %s", ty1);
1123 /* strings must be const, arrays are statically sized */
1124 if (exprs[0]->vtype == TYPE_STRING &&
1125 !(((ast_value*)exprs[0])->hasvalue && ((ast_value*)exprs[0])->cvq == CV_CONST))
1127 compile_error(ast_ctx(exprs[0]), "operand of length operator not a valid constant expression");
1130 out = parser->m_fold.op(op, exprs);
1133 case opid2('~', 'P'):
1134 if (exprs[0]->vtype != TYPE_FLOAT && exprs[0]->vtype != TYPE_VECTOR) {
1135 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1136 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1139 if (!(out = parser->m_fold.op(op, exprs))) {
1140 if (exprs[0]->vtype == TYPE_FLOAT) {
1141 out = fold::binary(ctx, INSTR_SUB_F, (ast_expression*)parser->m_fold.imm_float(2), exprs[0]);
1143 out = fold::binary(ctx, INSTR_SUB_V, (ast_expression*)parser->m_fold.imm_vector(1), exprs[0]);
1150 compile_error(ctx, "failed to apply operator %s", op->op);
1154 sy->out.push_back(syexp(ctx, out));
1158 static bool parser_close_call(parser_t *parser, shunt *sy)
1160 /* was a function call */
1161 ast_expression *fun;
1162 ast_value *funval = nullptr;
1166 size_t paramcount, i;
1169 fid = sy->ops.back().off;
1172 /* out[fid] is the function
1173 * everything above is parameters...
1175 if (sy->argc.empty()) {
1176 parseerror(parser, "internal error: no argument counter available");
1180 paramcount = sy->argc.back();
1181 sy->argc.pop_back();
1183 if (sy->out.size() < fid) {
1184 parseerror(parser, "internal error: broken function call %zu < %zu+%zu\n",
1192 * TODO handle this at the intrinsic level with an ast_intrinsic
1195 if ((fun = sy->out[fid].out) == parser->m_intrin.debug_typestring()) {
1197 if (fid+2 != sy->out.size() || sy->out.back().block) {
1198 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1201 ast_type_to_string(sy->out.back().out, ty, sizeof(ty));
1202 ast_unref(sy->out.back().out);
1203 sy->out[fid] = syexp(ast_ctx(sy->out.back().out),
1204 (ast_expression*)parser->m_fold.constgen_string(ty, false));
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 < sy->out.size())
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 = nullptr;
1234 ast_expression *foldval = nullptr;
1236 for (i = 0; i < paramcount; i++)
1237 vec_push(exprs, sy->out[fid+1 + i].out);
1239 if (!(foldval = parser->m_intrin.do_fold((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 sy->out.erase(sy->out.end() - paramcount, sy->out.end());
1256 call = ast_call_new(sy->ops[sy->ops.size()].ctx, fun);
1261 if (fid+1 + paramcount != sy->out.size()) {
1262 parseerror(parser, "internal error: parameter count mismatch: (%zu+1+%zu), %zu",
1269 for (i = 0; i < paramcount; ++i)
1270 call->params.push_back(sy->out[fid+1 + i].out);
1271 sy->out.erase(sy->out.end() - paramcount, sy->out.end());
1272 (void)!ast_call_check_types(call, parser->function->vtype->expression.varparam);
1273 if (parser->max_param_count < paramcount)
1274 parser->max_param_count = paramcount;
1276 if (ast_istype(fun, ast_value)) {
1277 funval = (ast_value*)fun;
1278 if ((fun->flags & AST_FLAG_VARIADIC) &&
1279 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1281 call->va_count = (ast_expression*)parser->m_fold.constgen_float((qcfloat_t)paramcount, false);
1285 /* overwrite fid, the function, with a call */
1286 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1288 if (fun->vtype != TYPE_FUNCTION) {
1289 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1294 parseerror(parser, "could not determine function return type");
1297 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : nullptr);
1299 if (fun->flags & AST_FLAG_DEPRECATED) {
1301 return !parsewarning(parser, WARN_DEPRECATED,
1302 "call to function (which is marked deprecated)\n",
1303 "-> it has been declared here: %s:%i",
1304 ast_ctx(fun).file, ast_ctx(fun).line);
1307 return !parsewarning(parser, WARN_DEPRECATED,
1308 "call to `%s` (which is marked deprecated)\n"
1309 "-> `%s` declared here: %s:%i",
1310 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1312 return !parsewarning(parser, WARN_DEPRECATED,
1313 "call to `%s` (deprecated: %s)\n"
1314 "-> `%s` declared here: %s:%i",
1315 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1319 if (fun->params.size() != paramcount &&
1320 !((fun->flags & AST_FLAG_VARIADIC) &&
1321 fun->params.size() < paramcount))
1323 const char *fewmany = (fun->params.size() > paramcount) ? "few" : "many";
1325 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1326 "too %s parameters for call to %s: expected %i, got %i\n"
1327 " -> `%s` has been declared here: %s:%i",
1328 fewmany, fval->name, (int)fun->params.size(), (int)paramcount,
1329 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1331 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1332 "too %s parameters for function call: expected %i, got %i\n"
1333 " -> it has been declared here: %s:%i",
1334 fewmany, (int)fun->params.size(), (int)paramcount,
1335 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1342 static bool parser_close_paren(parser_t *parser, shunt *sy)
1344 if (sy->ops.empty()) {
1345 parseerror(parser, "unmatched closing paren");
1349 while (sy->ops.size()) {
1350 if (sy->ops.back().isparen) {
1351 if (sy->paren.back() == PAREN_FUNC) {
1352 sy->paren.pop_back();
1353 if (!parser_close_call(parser, sy))
1357 if (sy->paren.back() == PAREN_EXPR) {
1358 sy->paren.pop_back();
1359 if (sy->out.empty()) {
1360 compile_error(sy->ops.back().ctx, "empty paren expression");
1367 if (sy->paren.back() == PAREN_INDEX) {
1368 sy->paren.pop_back();
1369 // pop off the parenthesis
1371 /* then apply the index operator */
1372 if (!parser_sy_apply_operator(parser, sy))
1376 if (sy->paren.back() == PAREN_TERNARY1) {
1377 sy->paren.back() = PAREN_TERNARY2;
1378 // pop off the parenthesis
1382 compile_error(sy->ops.back().ctx, "invalid parenthesis");
1385 if (!parser_sy_apply_operator(parser, sy))
1391 static void parser_reclassify_token(parser_t *parser)
1394 if (parser->tok >= TOKEN_START)
1396 for (i = 0; i < operator_count; ++i) {
1397 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1398 parser->tok = TOKEN_OPERATOR;
1404 static ast_expression* parse_vararg_do(parser_t *parser)
1406 ast_expression *idx, *out;
1408 ast_value *funtype = parser->function->vtype;
1409 lex_ctx_t ctx = parser_ctx(parser);
1411 if (!parser->function->varargs) {
1412 parseerror(parser, "function has no variable argument list");
1416 if (!parser_next(parser) || parser->tok != '(') {
1417 parseerror(parser, "expected parameter index and type in parenthesis");
1420 if (!parser_next(parser)) {
1421 parseerror(parser, "error parsing parameter index");
1425 idx = parse_expression_leave(parser, true, false, false);
1429 if (parser->tok != ',') {
1430 if (parser->tok != ')') {
1432 parseerror(parser, "expected comma after parameter index");
1435 /* vararg piping: ...(start) */
1436 out = (ast_expression*)ast_argpipe_new(ctx, idx);
1440 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1442 parseerror(parser, "expected typename for vararg");
1446 typevar = parse_typename(parser, nullptr, nullptr, nullptr);
1452 if (parser->tok != ')') {
1454 ast_delete(typevar);
1455 parseerror(parser, "expected closing paren");
1459 if (funtype->expression.varparam &&
1460 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1464 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1465 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1466 compile_error(ast_ctx(typevar),
1467 "function was declared to take varargs of type `%s`, requested type is: %s",
1471 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1472 ast_type_adopt(out, typevar);
1473 ast_delete(typevar);
1477 static ast_expression* parse_vararg(parser_t *parser)
1479 bool old_noops = parser->lex->flags.noops;
1481 ast_expression *out;
1483 parser->lex->flags.noops = true;
1484 out = parse_vararg_do(parser);
1486 parser->lex->flags.noops = old_noops;
1490 /* not to be exposed */
1491 bool ftepp_predef_exists(const char *name);
1492 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1494 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1495 parser->tok == TOKEN_IDENT &&
1496 !strcmp(parser_tokval(parser), "_"))
1498 /* a translatable string */
1501 parser->lex->flags.noops = true;
1502 if (!parser_next(parser) || parser->tok != '(') {
1503 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1506 parser->lex->flags.noops = false;
1507 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1508 parseerror(parser, "expected a constant string in translatable-string extension");
1511 val = (ast_value*)parser->m_fold.constgen_string(parser_tokval(parser), true);
1514 sy->out.push_back(syexp(parser_ctx(parser), (ast_expression*)val));
1516 if (!parser_next(parser) || parser->tok != ')') {
1517 parseerror(parser, "expected closing paren after translatable string");
1522 else if (parser->tok == TOKEN_DOTS)
1525 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1526 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1529 va = parse_vararg(parser);
1532 sy->out.push_back(syexp(parser_ctx(parser), va));
1535 else if (parser->tok == TOKEN_FLOATCONST) {
1536 ast_expression *val = parser->m_fold.constgen_float((parser_token(parser)->constval.f), false);
1539 sy->out.push_back(syexp(parser_ctx(parser), val));
1542 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1543 ast_expression *val = parser->m_fold.constgen_float((qcfloat_t)(parser_token(parser)->constval.i), false);
1546 sy->out.push_back(syexp(parser_ctx(parser), val));
1549 else if (parser->tok == TOKEN_STRINGCONST) {
1550 ast_expression *val = parser->m_fold.constgen_string(parser_tokval(parser), false);
1553 sy->out.push_back(syexp(parser_ctx(parser), val));
1556 else if (parser->tok == TOKEN_VECTORCONST) {
1557 ast_expression *val = parser->m_fold.constgen_vector(parser_token(parser)->constval.v);
1560 sy->out.push_back(syexp(parser_ctx(parser), val));
1563 else if (parser->tok == TOKEN_IDENT)
1565 const char *ctoken = parser_tokval(parser);
1566 ast_expression *prev = sy->out.size() ? sy->out.back().out : nullptr;
1567 ast_expression *var;
1568 /* a_vector.{x,y,z} */
1569 if (sy->ops.empty() ||
1570 !sy->ops.back().etype ||
1571 operators[sy->ops.back().etype-1].id != opid1('.'))
1573 /* When adding more intrinsics, fix the above condition */
1576 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1578 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1580 var = parser_find_var(parser, parser_tokval(parser));
1582 var = parser_find_field(parser, parser_tokval(parser));
1584 if (!var && with_labels) {
1585 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1587 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1588 var = (ast_expression*)lbl;
1589 parser->labels.push_back(lbl);
1592 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
1593 var = (ast_expression*)parser->m_fold.constgen_string(parser->function->name, false);
1596 * now we try for the real intrinsic hashtable. If the string
1597 * begins with __builtin, we simply skip past it, otherwise we
1598 * use the identifier as is.
1600 if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
1601 var = parser->m_intrin.func(parser_tokval(parser));
1605 * Try it again, intrin_func deals with the alias method as well
1606 * the first one masks for __builtin though, we emit warning here.
1609 if ((var = parser->m_intrin.func(parser_tokval(parser)))) {
1610 (void)!compile_warning(
1613 "using implicitly defined builtin `__builtin_%s' for `%s'",
1614 parser_tokval(parser),
1615 parser_tokval(parser)
1623 * sometimes people use preprocessing predefs without enabling them
1624 * i've done this thousands of times already myself. Lets check for
1625 * it in the predef table. And diagnose it better :)
1627 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
1628 parseerror(parser, "unexpected identifier: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1632 parseerror(parser, "unexpected identifier: %s", parser_tokval(parser));
1638 if (ast_istype(var, ast_value)) {
1639 ((ast_value*)var)->uses++;
1641 else if (ast_istype(var, ast_member)) {
1642 ast_member *mem = (ast_member*)var;
1643 if (ast_istype(mem->owner, ast_value))
1644 ((ast_value*)(mem->owner))->uses++;
1647 sy->out.push_back(syexp(parser_ctx(parser), var));
1650 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1654 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1656 ast_expression *expr = nullptr;
1658 bool wantop = false;
1659 /* only warn once about an assignment in a truth value because the current code
1660 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1662 bool warn_parenthesis = true;
1664 /* count the parens because an if starts with one, so the
1665 * end of a condition is an unmatched closing paren
1669 memset(&sy, 0, sizeof(sy));
1671 parser->lex->flags.noops = false;
1673 parser_reclassify_token(parser);
1677 if (parser->tok == TOKEN_TYPENAME) {
1678 parseerror(parser, "unexpected typename `%s`", parser_tokval(parser));
1682 if (parser->tok == TOKEN_OPERATOR)
1684 /* classify the operator */
1685 const oper_info *op;
1686 const oper_info *olast = nullptr;
1688 for (o = 0; o < operator_count; ++o) {
1689 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1690 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1691 !strcmp(parser_tokval(parser), operators[o].op))
1696 if (o == operator_count) {
1697 compile_error(parser_ctx(parser), "unexpected operator: %s", parser_tokval(parser));
1700 /* found an operator */
1703 /* when declaring variables, a comma starts a new variable */
1704 if (op->id == opid1(',') && sy.paren.empty() && stopatcomma) {
1705 /* fixup the token */
1710 /* a colon without a pervious question mark cannot be a ternary */
1711 if (!ternaries && op->id == opid2(':','?')) {
1716 if (op->id == opid1(',')) {
1717 if (sy.paren.size() && sy.paren.back() == PAREN_TERNARY2) {
1718 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1722 if (sy.ops.size() && !sy.ops.back().isparen)
1723 olast = &operators[sy.ops.back().etype-1];
1725 /* first only apply higher precedences, assoc_left+equal comes after we warn about precedence rules */
1726 while (olast && op->prec < olast->prec)
1728 if (!parser_sy_apply_operator(parser, &sy))
1730 if (sy.ops.size() && !sy.ops.back().isparen)
1731 olast = &operators[sy.ops.back().etype-1];
1736 #define IsAssignOp(x) (\
1737 (x) == opid1('=') || \
1738 (x) == opid2('+','=') || \
1739 (x) == opid2('-','=') || \
1740 (x) == opid2('*','=') || \
1741 (x) == opid2('/','=') || \
1742 (x) == opid2('%','=') || \
1743 (x) == opid2('&','=') || \
1744 (x) == opid2('|','=') || \
1745 (x) == opid3('&','~','=') \
1747 if (warn_parenthesis) {
1748 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1749 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1750 (truthvalue && sy.paren.empty() && IsAssignOp(op->id))
1753 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1754 warn_parenthesis = false;
1757 if (olast && olast->id != op->id) {
1758 if ((op->id == opid1('&') || op->id == opid1('|') || op->id == opid1('^')) &&
1759 (olast->id == opid1('&') || olast->id == opid1('|') || olast->id == opid1('^')))
1761 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around bitwise operations");
1762 warn_parenthesis = false;
1764 else if ((op->id == opid2('&','&') || op->id == opid2('|','|')) &&
1765 (olast->id == opid2('&','&') || olast->id == opid2('|','|')))
1767 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around logical operations");
1768 warn_parenthesis = false;
1774 (op->prec < olast->prec) ||
1775 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1777 if (!parser_sy_apply_operator(parser, &sy))
1779 if (sy.ops.size() && !sy.ops.back().isparen)
1780 olast = &operators[sy.ops.back().etype-1];
1785 if (op->id == opid1('(')) {
1787 size_t sycount = sy.out.size();
1788 /* we expected an operator, this is the function-call operator */
1789 sy.paren.push_back(PAREN_FUNC);
1790 sy.ops.push_back(syparen(parser_ctx(parser), sycount-1));
1791 sy.argc.push_back(0);
1793 sy.paren.push_back(PAREN_EXPR);
1794 sy.ops.push_back(syparen(parser_ctx(parser), 0));
1797 } else if (op->id == opid1('[')) {
1799 parseerror(parser, "unexpected array subscript");
1802 sy.paren.push_back(PAREN_INDEX);
1803 /* push both the operator and the paren, this makes life easier */
1804 sy.ops.push_back(syop(parser_ctx(parser), op));
1805 sy.ops.push_back(syparen(parser_ctx(parser), 0));
1807 } else if (op->id == opid2('?',':')) {
1808 sy.ops.push_back(syop(parser_ctx(parser), op));
1809 sy.ops.push_back(syparen(parser_ctx(parser), 0));
1812 sy.paren.push_back(PAREN_TERNARY1);
1813 } else if (op->id == opid2(':','?')) {
1814 if (sy.paren.empty()) {
1815 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1818 if (sy.paren.back() != PAREN_TERNARY1) {
1819 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1822 if (!parser_close_paren(parser, &sy))
1824 sy.ops.push_back(syop(parser_ctx(parser), op));
1828 sy.ops.push_back(syop(parser_ctx(parser), op));
1829 wantop = !!(op->flags & OP_SUFFIX);
1832 else if (parser->tok == ')') {
1833 while (sy.paren.size() && sy.paren.back() == PAREN_TERNARY2) {
1834 if (!parser_sy_apply_operator(parser, &sy))
1837 if (sy.paren.empty())
1840 if (sy.paren.back() == PAREN_TERNARY1) {
1841 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
1844 if (!parser_close_paren(parser, &sy))
1847 /* must be a function call without parameters */
1848 if (sy.paren.back() != PAREN_FUNC) {
1849 parseerror(parser, "closing paren in invalid position");
1852 if (!parser_close_paren(parser, &sy))
1857 else if (parser->tok == '(') {
1858 parseerror(parser, "internal error: '(' should be classified as operator");
1861 else if (parser->tok == '[') {
1862 parseerror(parser, "internal error: '[' should be classified as operator");
1865 else if (parser->tok == ']') {
1866 while (sy.paren.size() && sy.paren.back() == PAREN_TERNARY2) {
1867 if (!parser_sy_apply_operator(parser, &sy))
1870 if (sy.paren.empty())
1872 if (sy.paren.back() != PAREN_INDEX) {
1873 parseerror(parser, "mismatched parentheses, unexpected ']'");
1876 if (!parser_close_paren(parser, &sy))
1881 if (!parse_sya_operand(parser, &sy, with_labels))
1886 /* in this case we might want to allow constant string concatenation */
1887 bool concatenated = false;
1888 if (parser->tok == TOKEN_STRINGCONST && sy.out.size()) {
1889 ast_expression *lexpr = sy.out.back().out;
1890 if (ast_istype(lexpr, ast_value)) {
1891 ast_value *last = (ast_value*)lexpr;
1892 if (last->isimm == true && last->cvq == CV_CONST &&
1893 last->hasvalue && last->expression.vtype == TYPE_STRING)
1895 char *newstr = nullptr;
1896 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
1897 sy.out.back().out = (ast_expression*)parser->m_fold.constgen_string(newstr, false);
1899 concatenated = true;
1903 if (!concatenated) {
1904 parseerror(parser, "expected operator or end of statement");
1909 if (!parser_next(parser)) {
1912 if (parser->tok == ';' ||
1913 ((sy.paren.empty() || (sy.paren.size() == 1 && sy.paren.back() == PAREN_TERNARY2)) &&
1914 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
1920 while (sy.ops.size()) {
1921 if (!parser_sy_apply_operator(parser, &sy))
1925 parser->lex->flags.noops = true;
1926 if (sy.out.size() != 1) {
1927 parseerror(parser, "expression expected");
1930 expr = sy.out[0].out;
1931 if (sy.paren.size()) {
1932 parseerror(parser, "internal error: sy.paren.size() = %zu", sy.paren.size());
1938 parser->lex->flags.noops = true;
1939 for (auto &it : sy.out)
1940 if (it.out) ast_unref(it.out);
1944 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
1946 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
1949 if (parser->tok != ';') {
1950 parseerror(parser, "semicolon expected after expression");
1954 if (!parser_next(parser)) {
1961 static void parser_enterblock(parser_t *parser)
1963 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1964 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1965 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1966 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1967 vec_push(parser->_block_ctx, parser_ctx(parser));
1970 static bool parser_leaveblock(parser_t *parser)
1973 size_t locals, typedefs;
1975 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1976 parseerror(parser, "internal error: parser_leaveblock with no block");
1980 util_htdel(vec_last(parser->variables));
1982 vec_pop(parser->variables);
1983 if (!vec_size(parser->_blocklocals)) {
1984 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1988 locals = vec_last(parser->_blocklocals);
1989 vec_pop(parser->_blocklocals);
1990 while (vec_size(parser->_locals) != locals) {
1991 ast_expression *e = vec_last(parser->_locals);
1992 ast_value *v = (ast_value*)e;
1993 vec_pop(parser->_locals);
1994 if (ast_istype(e, ast_value) && !v->uses) {
1995 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2000 typedefs = vec_last(parser->_blocktypedefs);
2001 while (vec_size(parser->_typedefs) != typedefs) {
2002 ast_delete(vec_last(parser->_typedefs));
2003 vec_pop(parser->_typedefs);
2005 util_htdel(vec_last(parser->typedefs));
2006 vec_pop(parser->typedefs);
2008 vec_pop(parser->_block_ctx);
2013 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2015 vec_push(parser->_locals, e);
2016 util_htset(vec_last(parser->variables), name, (void*)e);
2019 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2021 parser->globals.push_back(e);
2022 util_htset(parser->htglobals, name, e);
2025 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2029 ast_expression *prev;
2031 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2033 ast_type_to_string(cond, ty, sizeof(ty));
2034 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2037 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2040 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2043 parseerror(parser, "internal error: failed to process condition");
2048 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2050 /* vector types need to be cast to true booleans */
2051 ast_binary *bin = (ast_binary*)cond;
2052 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2054 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2056 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2059 parseerror(parser, "internal error: failed to process condition");
2066 unary = (ast_unary*)cond;
2067 /* ast_istype dereferences cond, should test here for safety */
2068 while (cond && ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2070 cond = unary->operand;
2071 unary->operand = nullptr;
2074 unary = (ast_unary*)cond;
2078 parseerror(parser, "internal error: failed to process condition");
2080 if (ifnot) *_ifnot = !*_ifnot;
2084 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2087 ast_expression *cond, *ontrue = nullptr, *onfalse = nullptr;
2090 lex_ctx_t ctx = parser_ctx(parser);
2092 (void)block; /* not touching */
2094 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2095 if (!parser_next(parser)) {
2096 parseerror(parser, "expected condition or 'not'");
2099 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2101 if (!parser_next(parser)) {
2102 parseerror(parser, "expected condition in parenthesis");
2106 if (parser->tok != '(') {
2107 parseerror(parser, "expected 'if' condition in parenthesis");
2110 /* parse into the expression */
2111 if (!parser_next(parser)) {
2112 parseerror(parser, "expected 'if' condition after opening paren");
2115 /* parse the condition */
2116 cond = parse_expression_leave(parser, false, true, false);
2120 if (parser->tok != ')') {
2121 parseerror(parser, "expected closing paren after 'if' condition");
2125 /* parse into the 'then' branch */
2126 if (!parser_next(parser)) {
2127 parseerror(parser, "expected statement for on-true branch of 'if'");
2131 if (!parse_statement_or_block(parser, &ontrue)) {
2136 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2137 /* check for an else */
2138 if (!strcmp(parser_tokval(parser), "else")) {
2139 /* parse into the 'else' branch */
2140 if (!parser_next(parser)) {
2141 parseerror(parser, "expected on-false branch after 'else'");
2146 if (!parse_statement_or_block(parser, &onfalse)) {
2153 cond = process_condition(parser, cond, &ifnot);
2155 if (ontrue) ast_delete(ontrue);
2156 if (onfalse) ast_delete(onfalse);
2161 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2163 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2164 *out = (ast_expression*)ifthen;
2168 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2169 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2172 char *label = nullptr;
2174 /* skip the 'while' and get the body */
2175 if (!parser_next(parser)) {
2176 if (OPTS_FLAG(LOOP_LABELS))
2177 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2179 parseerror(parser, "expected 'while' condition in parenthesis");
2183 if (parser->tok == ':') {
2184 if (!OPTS_FLAG(LOOP_LABELS))
2185 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2186 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2187 parseerror(parser, "expected loop label");
2190 label = util_strdup(parser_tokval(parser));
2191 if (!parser_next(parser)) {
2193 parseerror(parser, "expected 'while' condition in parenthesis");
2198 if (parser->tok != '(') {
2199 parseerror(parser, "expected 'while' condition in parenthesis");
2203 parser->breaks.push_back(label);
2204 parser->continues.push_back(label);
2206 rv = parse_while_go(parser, block, out);
2209 if (parser->breaks.back() != label || parser->continues.back() != label) {
2210 parseerror(parser, "internal error: label stack corrupted");
2216 parser->breaks.pop_back();
2217 parser->continues.pop_back();
2222 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2225 ast_expression *cond, *ontrue;
2229 lex_ctx_t ctx = parser_ctx(parser);
2231 (void)block; /* not touching */
2233 /* parse into the expression */
2234 if (!parser_next(parser)) {
2235 parseerror(parser, "expected 'while' condition after opening paren");
2238 /* parse the condition */
2239 cond = parse_expression_leave(parser, false, true, false);
2243 if (parser->tok != ')') {
2244 parseerror(parser, "expected closing paren after 'while' condition");
2248 /* parse into the 'then' branch */
2249 if (!parser_next(parser)) {
2250 parseerror(parser, "expected while-loop body");
2254 if (!parse_statement_or_block(parser, &ontrue)) {
2259 cond = process_condition(parser, cond, &ifnot);
2264 aloop = ast_loop_new(ctx, nullptr, cond, ifnot, nullptr, false, nullptr, ontrue);
2265 *out = (ast_expression*)aloop;
2269 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2270 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2273 char *label = nullptr;
2275 /* skip the 'do' and get the body */
2276 if (!parser_next(parser)) {
2277 if (OPTS_FLAG(LOOP_LABELS))
2278 parseerror(parser, "expected loop label or body");
2280 parseerror(parser, "expected loop body");
2284 if (parser->tok == ':') {
2285 if (!OPTS_FLAG(LOOP_LABELS))
2286 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2287 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2288 parseerror(parser, "expected loop label");
2291 label = util_strdup(parser_tokval(parser));
2292 if (!parser_next(parser)) {
2294 parseerror(parser, "expected loop body");
2299 parser->breaks.push_back(label);
2300 parser->continues.push_back(label);
2302 rv = parse_dowhile_go(parser, block, out);
2305 if (parser->breaks.back() != label || parser->continues.back() != label) {
2306 parseerror(parser, "internal error: label stack corrupted");
2309 * Test for nullptr otherwise ast_delete dereferences null pointer
2317 parser->breaks.pop_back();
2318 parser->continues.pop_back();
2323 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2326 ast_expression *cond, *ontrue;
2330 lex_ctx_t ctx = parser_ctx(parser);
2332 (void)block; /* not touching */
2334 if (!parse_statement_or_block(parser, &ontrue))
2337 /* expect the "while" */
2338 if (parser->tok != TOKEN_KEYWORD ||
2339 strcmp(parser_tokval(parser), "while"))
2341 parseerror(parser, "expected 'while' and condition");
2346 /* skip the 'while' and check for opening paren */
2347 if (!parser_next(parser) || parser->tok != '(') {
2348 parseerror(parser, "expected 'while' condition in parenthesis");
2352 /* parse into the expression */
2353 if (!parser_next(parser)) {
2354 parseerror(parser, "expected 'while' condition after opening paren");
2358 /* parse the condition */
2359 cond = parse_expression_leave(parser, false, true, false);
2363 if (parser->tok != ')') {
2364 parseerror(parser, "expected closing paren after 'while' condition");
2370 if (!parser_next(parser) || parser->tok != ';') {
2371 parseerror(parser, "expected semicolon after condition");
2377 if (!parser_next(parser)) {
2378 parseerror(parser, "parse error");
2384 cond = process_condition(parser, cond, &ifnot);
2389 aloop = ast_loop_new(ctx, nullptr, nullptr, false, cond, ifnot, nullptr, ontrue);
2390 *out = (ast_expression*)aloop;
2394 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2395 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2398 char *label = nullptr;
2400 /* skip the 'for' and check for opening paren */
2401 if (!parser_next(parser)) {
2402 if (OPTS_FLAG(LOOP_LABELS))
2403 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2405 parseerror(parser, "expected 'for' expressions in parenthesis");
2409 if (parser->tok == ':') {
2410 if (!OPTS_FLAG(LOOP_LABELS))
2411 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2412 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2413 parseerror(parser, "expected loop label");
2416 label = util_strdup(parser_tokval(parser));
2417 if (!parser_next(parser)) {
2419 parseerror(parser, "expected 'for' expressions in parenthesis");
2424 if (parser->tok != '(') {
2425 parseerror(parser, "expected 'for' expressions in parenthesis");
2429 parser->breaks.push_back(label);
2430 parser->continues.push_back(label);
2432 rv = parse_for_go(parser, block, out);
2435 if (parser->breaks.back() != label || parser->continues.back() != label) {
2436 parseerror(parser, "internal error: label stack corrupted");
2442 parser->breaks.pop_back();
2443 parser->continues.pop_back();
2447 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2450 ast_expression *initexpr, *cond, *increment, *ontrue;
2455 lex_ctx_t ctx = parser_ctx(parser);
2457 parser_enterblock(parser);
2461 increment = nullptr;
2464 /* parse into the expression */
2465 if (!parser_next(parser)) {
2466 parseerror(parser, "expected 'for' initializer after opening paren");
2471 if (parser->tok == TOKEN_IDENT)
2472 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2474 if (typevar || parser->tok == TOKEN_TYPENAME) {
2475 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, nullptr))
2478 else if (parser->tok != ';')
2480 initexpr = parse_expression_leave(parser, false, false, false);
2484 /* move on to condition */
2485 if (parser->tok != ';') {
2486 parseerror(parser, "expected semicolon after for-loop initializer");
2490 if (!parser_next(parser)) {
2491 parseerror(parser, "expected for-loop condition");
2496 /* parse the condition */
2497 if (parser->tok != ';') {
2498 cond = parse_expression_leave(parser, false, true, false);
2503 /* move on to incrementor */
2504 if (parser->tok != ';') {
2505 parseerror(parser, "expected semicolon after for-loop initializer");
2508 if (!parser_next(parser)) {
2509 parseerror(parser, "expected for-loop condition");
2513 /* parse the incrementor */
2514 if (parser->tok != ')') {
2515 lex_ctx_t condctx = parser_ctx(parser);
2516 increment = parse_expression_leave(parser, false, false, false);
2519 if (!ast_side_effects(increment)) {
2520 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2526 if (parser->tok != ')') {
2527 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2530 /* parse into the 'then' branch */
2531 if (!parser_next(parser)) {
2532 parseerror(parser, "expected for-loop body");
2535 if (!parse_statement_or_block(parser, &ontrue))
2539 cond = process_condition(parser, cond, &ifnot);
2543 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, nullptr, false, increment, ontrue);
2544 *out = (ast_expression*)aloop;
2546 if (!parser_leaveblock(parser)) {
2552 if (initexpr) ast_unref(initexpr);
2553 if (cond) ast_unref(cond);
2554 if (increment) ast_unref(increment);
2555 (void)!parser_leaveblock(parser);
2559 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2561 ast_expression *exp = nullptr;
2562 ast_expression *var = nullptr;
2563 ast_return *ret = nullptr;
2564 ast_value *retval = parser->function->return_value;
2565 ast_value *expected = parser->function->vtype;
2567 lex_ctx_t ctx = parser_ctx(parser);
2569 (void)block; /* not touching */
2571 if (!parser_next(parser)) {
2572 parseerror(parser, "expected return expression");
2576 /* return assignments */
2577 if (parser->tok == '=') {
2578 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
2579 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
2583 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
2585 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
2586 parseerror(parser, "invalid return type: `%s'", ty1);
2590 if (!parser_next(parser)) {
2591 parseerror(parser, "expected return assignment expression");
2595 if (!(exp = parse_expression_leave(parser, false, false, false)))
2598 /* prepare the return value */
2600 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
2601 ast_type_adopt(retval, expected->expression.next);
2602 parser->function->return_value = retval;
2605 if (!ast_compare_type(exp, (ast_expression*)retval)) {
2606 char ty1[1024], ty2[1024];
2607 ast_type_to_string(exp, ty1, sizeof(ty1));
2608 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
2609 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
2612 /* store to 'return' local variable */
2613 var = (ast_expression*)ast_store_new(
2615 type_store_instr[expected->expression.next->vtype],
2616 (ast_expression*)retval, exp);
2623 if (parser->tok != ';')
2624 parseerror(parser, "missing semicolon after return assignment");
2625 else if (!parser_next(parser))
2626 parseerror(parser, "parse error after return assignment");
2632 if (parser->tok != ';') {
2633 exp = parse_expression(parser, false, false);
2637 if (exp->vtype != TYPE_NIL &&
2638 exp->vtype != ((ast_expression*)expected)->next->vtype)
2640 parseerror(parser, "return with invalid expression");
2643 ret = ast_return_new(ctx, exp);
2649 if (!parser_next(parser))
2650 parseerror(parser, "parse error");
2652 if (!retval && expected->expression.next->vtype != TYPE_VOID)
2654 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2656 ret = ast_return_new(ctx, (ast_expression*)retval);
2658 *out = (ast_expression*)ret;
2662 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2665 unsigned int levels = 0;
2666 lex_ctx_t ctx = parser_ctx(parser);
2667 auto &loops = (is_continue ? parser->continues : parser->breaks);
2669 (void)block; /* not touching */
2670 if (!parser_next(parser)) {
2671 parseerror(parser, "expected semicolon or loop label");
2675 if (loops.empty()) {
2677 parseerror(parser, "`continue` can only be used inside loops");
2679 parseerror(parser, "`break` can only be used inside loops or switches");
2682 if (parser->tok == TOKEN_IDENT) {
2683 if (!OPTS_FLAG(LOOP_LABELS))
2684 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2687 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2690 parseerror(parser, "no such loop to %s: `%s`",
2691 (is_continue ? "continue" : "break out of"),
2692 parser_tokval(parser));
2697 if (!parser_next(parser)) {
2698 parseerror(parser, "expected semicolon");
2703 if (parser->tok != ';') {
2704 parseerror(parser, "expected semicolon");
2708 if (!parser_next(parser))
2709 parseerror(parser, "parse error");
2711 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2715 /* returns true when it was a variable qualifier, false otherwise!
2716 * on error, cvq is set to CV_WRONG
2718 struct attribute_t {
2723 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2725 bool had_const = false;
2726 bool had_var = false;
2727 bool had_noref = false;
2728 bool had_attrib = false;
2729 bool had_static = false;
2732 static attribute_t attributes[] = {
2733 { "noreturn", AST_FLAG_NORETURN },
2734 { "inline", AST_FLAG_INLINE },
2735 { "eraseable", AST_FLAG_ERASEABLE },
2736 { "accumulate", AST_FLAG_ACCUMULATE },
2737 { "last", AST_FLAG_FINAL_DECL }
2744 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2746 /* parse an attribute */
2747 if (!parser_next(parser)) {
2748 parseerror(parser, "expected attribute after `[[`");
2753 for (i = 0; i < GMQCC_ARRAY_COUNT(attributes); i++) {
2754 if (!strcmp(parser_tokval(parser), attributes[i].name)) {
2755 flags |= attributes[i].flag;
2756 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2757 parseerror(parser, "`%s` attribute has no parameters, expected `]]`",
2758 attributes[i].name);
2766 if (i != GMQCC_ARRAY_COUNT(attributes))
2770 if (!strcmp(parser_tokval(parser), "noref")) {
2772 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2773 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2778 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
2779 flags |= AST_FLAG_ALIAS;
2782 if (!parser_next(parser)) {
2783 parseerror(parser, "parse error in attribute");
2787 if (parser->tok == '(') {
2788 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2789 parseerror(parser, "`alias` attribute missing parameter");
2793 *message = util_strdup(parser_tokval(parser));
2795 if (!parser_next(parser)) {
2796 parseerror(parser, "parse error in attribute");
2800 if (parser->tok != ')') {
2801 parseerror(parser, "`alias` attribute expected `)` after parameter");
2805 if (!parser_next(parser)) {
2806 parseerror(parser, "parse error in attribute");
2811 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2812 parseerror(parser, "`alias` attribute expected `]]`");
2816 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2817 flags |= AST_FLAG_DEPRECATED;
2820 if (!parser_next(parser)) {
2821 parseerror(parser, "parse error in attribute");
2825 if (parser->tok == '(') {
2826 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2827 parseerror(parser, "`deprecated` attribute missing parameter");
2831 *message = util_strdup(parser_tokval(parser));
2833 if (!parser_next(parser)) {
2834 parseerror(parser, "parse error in attribute");
2838 if(parser->tok != ')') {
2839 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2843 if (!parser_next(parser)) {
2844 parseerror(parser, "parse error in attribute");
2849 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2850 parseerror(parser, "`deprecated` attribute expected `]]`");
2853 if (*message) mem_d(*message);
2859 else if (!strcmp(parser_tokval(parser), "coverage") && !(flags & AST_FLAG_COVERAGE)) {
2860 flags |= AST_FLAG_COVERAGE;
2861 if (!parser_next(parser)) {
2863 parseerror(parser, "parse error in coverage attribute");
2867 if (parser->tok == '(') {
2868 if (!parser_next(parser)) {
2870 parseerror(parser, "invalid parameter for coverage() attribute\n"
2871 "valid are: block");
2875 if (parser->tok != ')') {
2877 if (parser->tok != TOKEN_IDENT)
2878 goto bad_coverage_arg;
2879 if (!strcmp(parser_tokval(parser), "block"))
2880 flags |= AST_FLAG_BLOCK_COVERAGE;
2881 else if (!strcmp(parser_tokval(parser), "none"))
2882 flags &= ~(AST_FLAG_COVERAGE_MASK);
2884 goto bad_coverage_arg;
2885 if (!parser_next(parser))
2886 goto error_in_coverage;
2887 if (parser->tok == ',') {
2888 if (!parser_next(parser))
2889 goto error_in_coverage;
2891 } while (parser->tok != ')');
2893 if (parser->tok != ')' || !parser_next(parser))
2894 goto error_in_coverage;
2896 /* without parameter [[coverage]] equals [[coverage(block)]] */
2897 flags |= AST_FLAG_BLOCK_COVERAGE;
2902 /* Skip tokens until we hit a ]] */
2903 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2904 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2905 if (!parser_next(parser)) {
2906 parseerror(parser, "error inside attribute");
2913 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2915 else if (!strcmp(parser_tokval(parser), "const"))
2917 else if (!strcmp(parser_tokval(parser), "var"))
2919 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2921 else if (!strcmp(parser_tokval(parser), "noref"))
2923 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2930 if (!parser_next(parser))
2940 *is_static = had_static;
2944 parseerror(parser, "parse error after variable qualifier");
2949 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2950 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2953 char *label = nullptr;
2955 /* skip the 'while' and get the body */
2956 if (!parser_next(parser)) {
2957 if (OPTS_FLAG(LOOP_LABELS))
2958 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2960 parseerror(parser, "expected 'switch' operand in parenthesis");
2964 if (parser->tok == ':') {
2965 if (!OPTS_FLAG(LOOP_LABELS))
2966 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2967 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2968 parseerror(parser, "expected loop label");
2971 label = util_strdup(parser_tokval(parser));
2972 if (!parser_next(parser)) {
2974 parseerror(parser, "expected 'switch' operand in parenthesis");
2979 if (parser->tok != '(') {
2980 parseerror(parser, "expected 'switch' operand in parenthesis");
2984 parser->breaks.push_back(label);
2986 rv = parse_switch_go(parser, block, out);
2989 if (parser->breaks.back() != label) {
2990 parseerror(parser, "internal error: label stack corrupted");
2996 parser->breaks.pop_back();
3001 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3003 ast_expression *operand;
3006 ast_switch *switchnode;
3007 ast_switch_case swcase;
3010 bool noref, is_static;
3011 uint32_t qflags = 0;
3013 lex_ctx_t ctx = parser_ctx(parser);
3015 (void)block; /* not touching */
3018 /* parse into the expression */
3019 if (!parser_next(parser)) {
3020 parseerror(parser, "expected switch operand");
3023 /* parse the operand */
3024 operand = parse_expression_leave(parser, false, false, false);
3028 switchnode = ast_switch_new(ctx, operand);
3031 if (parser->tok != ')') {
3032 ast_delete(switchnode);
3033 parseerror(parser, "expected closing paren after 'switch' operand");
3037 /* parse over the opening paren */
3038 if (!parser_next(parser) || parser->tok != '{') {
3039 ast_delete(switchnode);
3040 parseerror(parser, "expected list of cases");
3044 if (!parser_next(parser)) {
3045 ast_delete(switchnode);
3046 parseerror(parser, "expected 'case' or 'default'");
3050 /* new block; allow some variables to be declared here */
3051 parser_enterblock(parser);
3054 if (parser->tok == TOKEN_IDENT)
3055 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3056 if (typevar || parser->tok == TOKEN_TYPENAME) {
3057 if (!parse_variable(parser, block, true, CV_NONE, typevar, false, false, 0, nullptr)) {
3058 ast_delete(switchnode);
3063 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, nullptr))
3065 if (cvq == CV_WRONG) {
3066 ast_delete(switchnode);
3069 if (!parse_variable(parser, block, true, cvq, nullptr, noref, is_static, qflags, nullptr)) {
3070 ast_delete(switchnode);
3079 while (parser->tok != '}') {
3080 ast_block *caseblock;
3082 if (!strcmp(parser_tokval(parser), "case")) {
3083 if (!parser_next(parser)) {
3084 ast_delete(switchnode);
3085 parseerror(parser, "expected expression for case");
3088 swcase.value = parse_expression_leave(parser, false, false, false);
3089 if (!swcase.value) {
3090 ast_delete(switchnode);
3091 parseerror(parser, "expected expression for case");
3094 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3095 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3096 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3102 else if (!strcmp(parser_tokval(parser), "default")) {
3103 swcase.value = nullptr;
3104 if (!parser_next(parser)) {
3105 ast_delete(switchnode);
3106 parseerror(parser, "expected colon");
3111 ast_delete(switchnode);
3112 parseerror(parser, "expected 'case' or 'default'");
3116 /* Now the colon and body */
3117 if (parser->tok != ':') {
3118 if (swcase.value) ast_unref(swcase.value);
3119 ast_delete(switchnode);
3120 parseerror(parser, "expected colon");
3124 if (!parser_next(parser)) {
3125 if (swcase.value) ast_unref(swcase.value);
3126 ast_delete(switchnode);
3127 parseerror(parser, "expected statements or case");
3130 caseblock = ast_block_new(parser_ctx(parser));
3132 if (swcase.value) ast_unref(swcase.value);
3133 ast_delete(switchnode);
3136 swcase.code = (ast_expression*)caseblock;
3137 switchnode->cases.push_back(swcase);
3139 ast_expression *expr;
3140 if (parser->tok == '}')
3142 if (parser->tok == TOKEN_KEYWORD) {
3143 if (!strcmp(parser_tokval(parser), "case") ||
3144 !strcmp(parser_tokval(parser), "default"))
3149 if (!parse_statement(parser, caseblock, &expr, true)) {
3150 ast_delete(switchnode);
3155 if (!ast_block_add_expr(caseblock, expr)) {
3156 ast_delete(switchnode);
3162 parser_leaveblock(parser);
3165 if (parser->tok != '}') {
3166 ast_delete(switchnode);
3167 parseerror(parser, "expected closing paren of case list");
3170 if (!parser_next(parser)) {
3171 ast_delete(switchnode);
3172 parseerror(parser, "parse error after switch");
3175 *out = (ast_expression*)switchnode;
3179 /* parse computed goto sides */
3180 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3181 ast_expression *on_true;
3182 ast_expression *on_false;
3183 ast_expression *cond;
3188 if (ast_istype(*side, ast_ternary)) {
3189 ast_ternary *tern = (ast_ternary*)*side;
3190 on_true = parse_goto_computed(parser, &tern->on_true);
3191 on_false = parse_goto_computed(parser, &tern->on_false);
3193 if (!on_true || !on_false) {
3194 parseerror(parser, "expected label or expression in ternary");
3195 if (on_true) ast_unref(on_true);
3196 if (on_false) ast_unref(on_false);
3201 tern->cond = nullptr;
3204 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3205 } else if (ast_istype(*side, ast_label)) {
3206 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3207 ast_goto_set_label(gt, ((ast_label*)*side));
3209 return (ast_expression*)gt;
3214 static bool parse_goto(parser_t *parser, ast_expression **out)
3216 ast_goto *gt = nullptr;
3217 ast_expression *lbl;
3219 if (!parser_next(parser))
3222 if (parser->tok != TOKEN_IDENT) {
3223 ast_expression *expression;
3225 /* could be an expression i.e computed goto :-) */
3226 if (parser->tok != '(') {
3227 parseerror(parser, "expected label name after `goto`");
3231 /* failed to parse expression for goto */
3232 if (!(expression = parse_expression(parser, false, true)) ||
3233 !(*out = parse_goto_computed(parser, &expression))) {
3234 parseerror(parser, "invalid goto expression");
3236 ast_unref(expression);
3243 /* not computed goto */
3244 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3245 lbl = parser_find_label(parser, gt->name);
3247 if (!ast_istype(lbl, ast_label)) {
3248 parseerror(parser, "internal error: label is not an ast_label");
3252 ast_goto_set_label(gt, (ast_label*)lbl);
3255 parser->gotos.push_back(gt);
3257 if (!parser_next(parser) || parser->tok != ';') {
3258 parseerror(parser, "semicolon expected after goto label");
3261 if (!parser_next(parser)) {
3262 parseerror(parser, "parse error after goto");
3266 *out = (ast_expression*)gt;
3270 static bool parse_skipwhite(parser_t *parser)
3273 if (!parser_next(parser))
3275 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3276 return parser->tok < TOKEN_ERROR;
3279 static bool parse_eol(parser_t *parser)
3281 if (!parse_skipwhite(parser))
3283 return parser->tok == TOKEN_EOL;
3286 static bool parse_pragma_do(parser_t *parser)
3288 if (!parser_next(parser) ||
3289 parser->tok != TOKEN_IDENT ||
3290 strcmp(parser_tokval(parser), "pragma"))
3292 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3295 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3296 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3300 if (!strcmp(parser_tokval(parser), "noref")) {
3301 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3302 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3305 parser->noref = !!parser_token(parser)->constval.i;
3306 if (!parse_eol(parser)) {
3307 parseerror(parser, "parse error after `noref` pragma");
3313 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3316 while (!parse_eol(parser)) {
3317 parser_next(parser);
3326 static bool parse_pragma(parser_t *parser)
3329 parser->lex->flags.preprocessing = true;
3330 parser->lex->flags.mergelines = true;
3331 rv = parse_pragma_do(parser);
3332 if (parser->tok != TOKEN_EOL) {
3333 parseerror(parser, "junk after pragma");
3336 parser->lex->flags.preprocessing = false;
3337 parser->lex->flags.mergelines = false;
3338 if (!parser_next(parser)) {
3339 parseerror(parser, "parse error after pragma");
3345 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3347 bool noref, is_static;
3349 uint32_t qflags = 0;
3350 ast_value *typevar = nullptr;
3351 char *vstring = nullptr;
3355 if (parser->tok == TOKEN_IDENT)
3356 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3358 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.' || parser->tok == TOKEN_DOTS)
3360 /* local variable */
3362 parseerror(parser, "cannot declare a variable from here");
3365 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3366 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3369 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, nullptr))
3373 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3375 if (cvq == CV_WRONG)
3377 return parse_variable(parser, block, false, cvq, nullptr, noref, is_static, qflags, vstring);
3379 else if (parser->tok == TOKEN_KEYWORD)
3381 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3386 if (!parser_next(parser)) {
3387 parseerror(parser, "parse error after __builtin_debug_printtype");
3391 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3393 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3394 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3395 if (!parser_next(parser)) {
3396 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3402 if (!parse_statement(parser, block, out, allow_cases))
3405 con_out("__builtin_debug_printtype: got no output node\n");
3408 ast_type_to_string(*out, ty, sizeof(ty));
3409 con_out("__builtin_debug_printtype: `%s`\n", ty);
3414 else if (!strcmp(parser_tokval(parser), "return"))
3416 return parse_return(parser, block, out);
3418 else if (!strcmp(parser_tokval(parser), "if"))
3420 return parse_if(parser, block, out);
3422 else if (!strcmp(parser_tokval(parser), "while"))
3424 return parse_while(parser, block, out);
3426 else if (!strcmp(parser_tokval(parser), "do"))
3428 return parse_dowhile(parser, block, out);
3430 else if (!strcmp(parser_tokval(parser), "for"))
3432 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3433 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3436 return parse_for(parser, block, out);
3438 else if (!strcmp(parser_tokval(parser), "break"))
3440 return parse_break_continue(parser, block, out, false);
3442 else if (!strcmp(parser_tokval(parser), "continue"))
3444 return parse_break_continue(parser, block, out, true);
3446 else if (!strcmp(parser_tokval(parser), "switch"))
3448 return parse_switch(parser, block, out);
3450 else if (!strcmp(parser_tokval(parser), "case") ||
3451 !strcmp(parser_tokval(parser), "default"))
3454 parseerror(parser, "unexpected 'case' label");
3459 else if (!strcmp(parser_tokval(parser), "goto"))
3461 return parse_goto(parser, out);