2 * Copyright (C) 2012, 2013, 2014
6 * Permission is hereby granted, free of charge, to any person obtaining a copy of
7 * this software and associated documentation files (the "Software"), to deal in
8 * the Software without restriction, including without limitation the rights to
9 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
10 * of the Software, and to permit persons to whom the Software is furnished to do
11 * so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 #define PARSER_HT_LOCALS 2
30 #define PARSER_HT_SIZE 512
31 #define TYPEDEF_HT_SIZE 512
33 static void parser_enterblock(parser_t *parser);
34 static bool parser_leaveblock(parser_t *parser);
35 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
36 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
37 static bool parse_typedef(parser_t *parser);
38 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);
39 static ast_block* parse_block(parser_t *parser);
40 static bool parse_block_into(parser_t *parser, ast_block *block);
41 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
42 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
43 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
44 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
45 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname);
46 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname);
47 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef, bool *is_vararg);
49 static void parseerror(parser_t *parser, const char *fmt, ...)
53 vcompile_error(parser->lex->tok.ctx, fmt, ap);
57 /* returns true if it counts as an error */
58 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
63 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
68 /**********************************************************************
72 static bool parser_next(parser_t *parser)
74 /* lex_do kills the previous token */
75 parser->tok = lex_do(parser->lex);
76 if (parser->tok == TOKEN_EOF)
78 if (parser->tok >= TOKEN_ERROR) {
79 parseerror(parser, "lex error");
85 #define parser_tokval(p) ((p)->lex->tok.value)
86 #define parser_token(p) (&((p)->lex->tok))
88 char *parser_strdup(const char *str)
91 /* actually dup empty strings */
92 char *out = (char*)mem_a(1);
96 return util_strdup(str);
99 static ast_expression* parser_find_field(parser_t *parser, const char *name)
101 return ( ast_expression*)util_htget(parser->htfields, name);
104 static ast_expression* parser_find_label(parser_t *parser, const char *name)
107 for(i = 0; i < vec_size(parser->labels); i++)
108 if (!strcmp(parser->labels[i]->name, name))
109 return (ast_expression*)parser->labels[i];
113 ast_expression* parser_find_global(parser_t *parser, const char *name)
115 ast_expression *var = (ast_expression*)util_htget(parser->aliases, parser_tokval(parser));
118 return (ast_expression*)util_htget(parser->htglobals, name);
121 static ast_expression* parser_find_param(parser_t *parser, const char *name)
125 if (!parser->function)
127 fun = parser->function->vtype;
128 for (i = 0; i < vec_size(fun->expression.params); ++i) {
129 if (!strcmp(fun->expression.params[i]->name, name))
130 return (ast_expression*)(fun->expression.params[i]);
135 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
140 hash = util_hthash(parser->htglobals, name);
143 for (i = vec_size(parser->variables); i > upto;) {
145 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
149 return parser_find_param(parser, name);
152 static ast_expression* parser_find_var(parser_t *parser, const char *name)
156 v = parser_find_local(parser, name, 0, &dummy);
157 if (!v) v = parser_find_global(parser, name);
161 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
165 hash = util_hthash(parser->typedefs[0], name);
167 for (i = vec_size(parser->typedefs); i > upto;) {
169 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
177 size_t etype; /* 0 = expression, others are operators */
181 ast_block *block; /* for commas and function calls */
200 static sy_elem syexp(lex_ctx_t ctx, ast_expression *v) {
211 static sy_elem syblock(lex_ctx_t ctx, ast_block *v) {
215 e.out = (ast_expression*)v;
222 static sy_elem syop(lex_ctx_t ctx, const oper_info *op) {
224 e.etype = 1 + (op - operators);
233 static sy_elem syparen(lex_ctx_t ctx, size_t off) {
244 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
245 * so we need to rotate it to become ent.(foo[n]).
247 static bool rotate_entfield_array_index_nodes(ast_expression **out)
249 ast_array_index *index, *oldindex;
250 ast_entfield *entfield;
254 ast_expression *entity;
256 lex_ctx_t ctx = ast_ctx(*out);
258 if (!ast_istype(*out, ast_array_index))
260 index = (ast_array_index*)*out;
262 if (!ast_istype(index->array, ast_entfield))
264 entfield = (ast_entfield*)index->array;
266 if (!ast_istype(entfield->field, ast_value))
268 field = (ast_value*)entfield->field;
271 entity = entfield->entity;
275 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
276 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
277 *out = (ast_expression*)entfield;
279 oldindex->array = NULL;
280 oldindex->index = NULL;
281 ast_delete(oldindex);
286 static bool check_write_to(lex_ctx_t ctx, ast_expression *expr)
288 if (ast_istype(expr, ast_value)) {
289 ast_value *val = (ast_value*)expr;
290 if (val->cvq == CV_CONST) {
291 if (val->name[0] == '#') {
292 compile_error(ctx, "invalid assignment to a literal constant");
296 * To work around quakeworld we must elide the error and make it
299 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_QCC)
300 compile_error(ctx, "assignment to constant `%s`", val->name);
302 (void)!compile_warning(ctx, WARN_CONST_OVERWRITE, "assignment to constant `%s`", val->name);
309 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
313 ast_expression *out = NULL;
314 ast_expression *exprs[3];
315 ast_block *blocks[3];
316 ast_binstore *asbinstore;
317 size_t i, assignop, addop, subop;
318 qcint_t generated_op = 0;
323 if (!vec_size(sy->ops)) {
324 parseerror(parser, "internal error: missing operator");
328 if (vec_last(sy->ops).isparen) {
329 parseerror(parser, "unmatched parenthesis");
333 op = &operators[vec_last(sy->ops).etype - 1];
334 ctx = vec_last(sy->ops).ctx;
336 if (vec_size(sy->out) < op->operands) {
337 if (op->flags & OP_PREFIX)
338 compile_error(ctx, "expected expression after unary operator `%s`", op->op, (int)op->id);
339 else /* this should have errored previously already */
340 compile_error(ctx, "expected expression after operator `%s`", op->op, (int)op->id);
344 vec_shrinkby(sy->ops, 1);
346 /* op(:?) has no input and no output */
350 vec_shrinkby(sy->out, op->operands);
351 for (i = 0; i < op->operands; ++i) {
352 exprs[i] = sy->out[vec_size(sy->out)+i].out;
353 blocks[i] = sy->out[vec_size(sy->out)+i].block;
355 if (exprs[i]->vtype == TYPE_NOEXPR &&
356 !(i != 0 && op->id == opid2('?',':')) &&
357 !(i == 1 && op->id == opid1('.')))
359 if (ast_istype(exprs[i], ast_label))
360 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
362 compile_error(ast_ctx(exprs[i]), "not an expression");
363 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
367 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
368 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
372 #define NotSameType(T) \
373 (exprs[0]->vtype != exprs[1]->vtype || \
374 exprs[0]->vtype != T)
379 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
383 if (exprs[0]->vtype == TYPE_VECTOR &&
384 exprs[1]->vtype == TYPE_NOEXPR)
386 if (exprs[1] == (ast_expression*)parser->const_vec[0])
387 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
388 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
389 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
390 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
391 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
393 compile_error(ctx, "access to invalid vector component");
397 else if (exprs[0]->vtype == TYPE_ENTITY) {
398 if (exprs[1]->vtype != TYPE_FIELD) {
399 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
402 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
404 else if (exprs[0]->vtype == TYPE_VECTOR) {
405 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
409 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
415 if (exprs[0]->vtype != TYPE_ARRAY &&
416 !(exprs[0]->vtype == TYPE_FIELD &&
417 exprs[0]->next->vtype == TYPE_ARRAY))
419 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
420 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
423 if (exprs[1]->vtype != TYPE_FLOAT) {
424 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
425 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
428 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
429 if (rotate_entfield_array_index_nodes(&out))
432 /* This is not broken in fteqcc anymore */
433 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
434 /* this error doesn't need to make us bail out */
435 (void)!parsewarning(parser, WARN_EXTENSIONS,
436 "accessing array-field members of an entity without parenthesis\n"
437 " -> this is an extension from -std=gmqcc");
444 if (vec_size(sy->paren) && vec_last(sy->paren) == PAREN_FUNC) {
445 vec_push(sy->out, syexp(ctx, exprs[0]));
446 vec_push(sy->out, syexp(ctx, exprs[1]));
447 vec_last(sy->argc)++;
451 if (!ast_block_add_expr(blocks[0], exprs[1]))
454 blocks[0] = ast_block_new(ctx);
455 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
456 !ast_block_add_expr(blocks[0], exprs[1]))
461 ast_block_set_type(blocks[0], exprs[1]);
463 vec_push(sy->out, syblock(ctx, blocks[0]));
470 if ((out = fold_op(parser->fold, op, exprs)))
473 if (exprs[0]->vtype != TYPE_FLOAT &&
474 exprs[0]->vtype != TYPE_VECTOR) {
475 compile_error(ctx, "invalid types used in unary expression: cannot negate type %s",
476 type_name[exprs[0]->vtype]);
479 if (exprs[0]->vtype == TYPE_FLOAT)
480 out = (ast_expression*)ast_unary_new(ctx, VINSTR_NEG_F, exprs[0]);
482 out = (ast_expression*)ast_unary_new(ctx, VINSTR_NEG_V, exprs[0]);
486 if (!(out = fold_op(parser->fold, op, exprs))) {
487 switch (exprs[0]->vtype) {
489 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
492 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
495 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
496 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
498 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
500 /* we don't constant-fold NOT for these types */
502 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
505 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
508 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
509 type_name[exprs[0]->vtype]);
516 if (exprs[0]->vtype != exprs[1]->vtype ||
517 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
519 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
520 type_name[exprs[0]->vtype],
521 type_name[exprs[1]->vtype]);
524 if (!(out = fold_op(parser->fold, op, exprs))) {
525 switch (exprs[0]->vtype) {
527 out = fold_binary(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
530 out = fold_binary(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
533 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
534 type_name[exprs[0]->vtype],
535 type_name[exprs[1]->vtype]);
541 if (exprs[0]->vtype != exprs[1]->vtype ||
542 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT))
544 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
545 type_name[exprs[1]->vtype],
546 type_name[exprs[0]->vtype]);
549 if (!(out = fold_op(parser->fold, op, exprs))) {
550 switch (exprs[0]->vtype) {
552 out = fold_binary(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
555 out = fold_binary(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
558 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
559 type_name[exprs[1]->vtype],
560 type_name[exprs[0]->vtype]);
566 if (exprs[0]->vtype != exprs[1]->vtype &&
567 !(exprs[0]->vtype == TYPE_VECTOR &&
568 exprs[1]->vtype == TYPE_FLOAT) &&
569 !(exprs[1]->vtype == TYPE_VECTOR &&
570 exprs[0]->vtype == TYPE_FLOAT)
573 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
574 type_name[exprs[1]->vtype],
575 type_name[exprs[0]->vtype]);
578 if (!(out = fold_op(parser->fold, op, exprs))) {
579 switch (exprs[0]->vtype) {
581 if (exprs[1]->vtype == TYPE_VECTOR)
582 out = fold_binary(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
584 out = fold_binary(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
587 if (exprs[1]->vtype == TYPE_FLOAT)
588 out = fold_binary(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
590 out = fold_binary(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
593 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
594 type_name[exprs[1]->vtype],
595 type_name[exprs[0]->vtype]);
602 if (exprs[1]->vtype != TYPE_FLOAT) {
603 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
604 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
605 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
608 if (!(out = fold_op(parser->fold, op, exprs))) {
609 if (exprs[0]->vtype == TYPE_FLOAT)
610 out = fold_binary(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
612 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
613 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
614 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
621 if (NotSameType(TYPE_FLOAT)) {
622 compile_error(ctx, "invalid types used in expression: cannot perform modulo operation between types %s and %s",
623 type_name[exprs[0]->vtype],
624 type_name[exprs[1]->vtype]);
626 } else if (!(out = fold_op(parser->fold, op, exprs))) {
627 /* generate a call to __builtin_mod */
628 ast_expression *mod = intrin_func(parser->intrin, "mod");
629 ast_call *call = NULL;
630 if (!mod) return false; /* can return null for missing floor */
632 call = ast_call_new(parser_ctx(parser), mod);
633 vec_push(call->params, exprs[0]);
634 vec_push(call->params, exprs[1]);
636 out = (ast_expression*)call;
641 compile_error(ctx, "%= is unimplemented");
647 if ( !(exprs[0]->vtype == TYPE_FLOAT && exprs[1]->vtype == TYPE_FLOAT) &&
648 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_FLOAT) &&
649 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_VECTOR))
651 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
652 type_name[exprs[0]->vtype],
653 type_name[exprs[1]->vtype]);
657 if (!(out = fold_op(parser->fold, op, exprs))) {
659 * IF the first expression is float, the following will be too
660 * since scalar ^ vector is not allowed.
662 if (exprs[0]->vtype == TYPE_FLOAT) {
663 out = fold_binary(ctx,
664 (op->id == opid1('^') ? VINSTR_BITXOR : op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
668 * The first is a vector: vector is allowed to bitop with vector and
669 * with scalar, branch here for the second operand.
671 if (exprs[1]->vtype == TYPE_VECTOR) {
673 * Bitop all the values of the vector components against the
674 * vectors components in question.
676 out = fold_binary(ctx,
677 (op->id == opid1('^') ? VINSTR_BITXOR_V : op->id == opid1('|') ? VINSTR_BITOR_V : VINSTR_BITAND_V),
680 out = fold_binary(ctx,
681 (op->id == opid1('^') ? VINSTR_BITXOR_VF : op->id == opid1('|') ? VINSTR_BITOR_VF : VINSTR_BITAND_VF),
690 if (NotSameType(TYPE_FLOAT)) {
691 compile_error(ctx, "invalid types used in expression: cannot perform shift between types %s and %s",
692 type_name[exprs[0]->vtype],
693 type_name[exprs[1]->vtype]);
697 if (!(out = fold_op(parser->fold, op, exprs))) {
698 ast_expression *shift = intrin_func(parser->intrin, (op->id == opid2('<','<')) ? "__builtin_lshift" : "__builtin_rshift");
699 ast_call *call = ast_call_new(parser_ctx(parser), shift);
700 vec_push(call->params, exprs[0]);
701 vec_push(call->params, exprs[1]);
702 out = (ast_expression*)call;
706 case opid3('<','<','='):
707 case opid3('>','>','='):
708 if (NotSameType(TYPE_FLOAT)) {
709 compile_error(ctx, "invalid types used in expression: cannot perform shift operation between types %s and %s",
710 type_name[exprs[0]->vtype],
711 type_name[exprs[1]->vtype]);
715 if(!(out = fold_op(parser->fold, op, exprs))) {
716 ast_expression *shift = intrin_func(parser->intrin, (op->id == opid3('<','<','=')) ? "__builtin_lshift" : "__builtin_rshift");
717 ast_call *call = ast_call_new(parser_ctx(parser), shift);
718 vec_push(call->params, exprs[0]);
719 vec_push(call->params, exprs[1]);
720 out = (ast_expression*)ast_store_new(
724 (ast_expression*)call
731 generated_op += 1; /* INSTR_OR */
733 generated_op += INSTR_AND;
734 if (!(out = fold_op(parser->fold, op, exprs))) {
735 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
736 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
737 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
738 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
741 for (i = 0; i < 2; ++i) {
742 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->vtype == TYPE_VECTOR) {
743 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
745 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
747 exprs[i] = out; out = NULL;
748 if (OPTS_FLAG(PERL_LOGIC)) {
749 /* here we want to keep the right expressions' type */
753 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->vtype == TYPE_STRING) {
754 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
756 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
758 exprs[i] = out; out = NULL;
759 if (OPTS_FLAG(PERL_LOGIC)) {
760 /* here we want to keep the right expressions' type */
765 out = fold_binary(ctx, generated_op, exprs[0], exprs[1]);
770 if (vec_last(sy->paren) != PAREN_TERNARY2) {
771 compile_error(ctx, "mismatched parenthesis/ternary");
775 if (!ast_compare_type(exprs[1], exprs[2])) {
776 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
777 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
778 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
781 if (!(out = fold_op(parser->fold, op, exprs)))
782 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
785 case opid2('*', '*'):
786 if (NotSameType(TYPE_FLOAT)) {
787 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
788 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
789 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
794 if (!(out = fold_op(parser->fold, op, exprs))) {
795 ast_call *gencall = ast_call_new(parser_ctx(parser), intrin_func(parser->intrin, "pow"));
796 vec_push(gencall->params, exprs[0]);
797 vec_push(gencall->params, exprs[1]);
798 out = (ast_expression*)gencall;
802 case opid2('>', '<'):
803 if (NotSameType(TYPE_VECTOR)) {
804 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
805 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
806 compile_error(ctx, "invalid types used in cross product: %s and %s",
811 if (!(out = fold_op(parser->fold, op, exprs))) {
822 case opid3('<','=','>'): /* -1, 0, or 1 */
823 if (NotSameType(TYPE_FLOAT)) {
824 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
825 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
826 compile_error(ctx, "invalid types used in comparision: %s and %s",
832 if (!(out = fold_op(parser->fold, op, exprs))) {
833 /* This whole block is NOT fold_binary safe */
834 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
836 eq->refs = AST_REF_NONE;
839 out = (ast_expression*)ast_ternary_new(ctx,
840 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
842 (ast_expression*)parser->fold->imm_float[2],
845 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
847 (ast_expression*)parser->fold->imm_float[0],
850 (ast_expression*)parser->fold->imm_float[1]
860 generated_op += 1; /* INSTR_GT */
862 generated_op += 1; /* INSTR_LT */
863 case opid2('>', '='):
864 generated_op += 1; /* INSTR_GE */
865 case opid2('<', '='):
866 generated_op += INSTR_LE;
867 if (NotSameType(TYPE_FLOAT)) {
868 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
869 type_name[exprs[0]->vtype],
870 type_name[exprs[1]->vtype]);
873 if (!(out = fold_op(parser->fold, op, exprs)))
874 out = fold_binary(ctx, generated_op, exprs[0], exprs[1]);
876 case opid2('!', '='):
877 if (exprs[0]->vtype != exprs[1]->vtype) {
878 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
879 type_name[exprs[0]->vtype],
880 type_name[exprs[1]->vtype]);
883 if (!(out = fold_op(parser->fold, op, exprs)))
884 out = fold_binary(ctx, type_ne_instr[exprs[0]->vtype], exprs[0], exprs[1]);
886 case opid2('=', '='):
887 if (exprs[0]->vtype != exprs[1]->vtype) {
888 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
889 type_name[exprs[0]->vtype],
890 type_name[exprs[1]->vtype]);
893 if (!(out = fold_op(parser->fold, op, exprs)))
894 out = fold_binary(ctx, type_eq_instr[exprs[0]->vtype], exprs[0], exprs[1]);
898 if (ast_istype(exprs[0], ast_entfield)) {
899 ast_expression *field = ((ast_entfield*)exprs[0])->field;
900 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
901 exprs[0]->vtype == TYPE_FIELD &&
902 exprs[0]->next->vtype == TYPE_VECTOR)
904 assignop = type_storep_instr[TYPE_VECTOR];
907 assignop = type_storep_instr[exprs[0]->vtype];
908 if (assignop == VINSTR_END || !ast_compare_type(field->next, exprs[1]))
910 ast_type_to_string(field->next, ty1, sizeof(ty1));
911 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
912 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
913 field->next->vtype == TYPE_FUNCTION &&
914 exprs[1]->vtype == TYPE_FUNCTION)
916 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
917 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
920 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
925 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
926 exprs[0]->vtype == TYPE_FIELD &&
927 exprs[0]->next->vtype == TYPE_VECTOR)
929 assignop = type_store_instr[TYPE_VECTOR];
932 assignop = type_store_instr[exprs[0]->vtype];
935 if (assignop == VINSTR_END) {
936 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
937 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
938 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
940 else if (!ast_compare_type(exprs[0], exprs[1]))
942 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
943 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
944 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
945 exprs[0]->vtype == TYPE_FUNCTION &&
946 exprs[1]->vtype == TYPE_FUNCTION)
948 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
949 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
952 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
955 (void)check_write_to(ctx, exprs[0]);
956 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
958 case opid3('+','+','P'):
959 case opid3('-','-','P'):
961 if (exprs[0]->vtype != TYPE_FLOAT) {
962 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
963 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
966 if (op->id == opid3('+','+','P'))
970 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
971 if (ast_istype(exprs[0], ast_entfield)) {
972 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
974 (ast_expression*)parser->fold->imm_float[1]);
976 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
978 (ast_expression*)parser->fold->imm_float[1]);
981 case opid3('S','+','+'):
982 case opid3('S','-','-'):
984 if (exprs[0]->vtype != TYPE_FLOAT) {
985 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
986 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
989 if (op->id == opid3('S','+','+')) {
996 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
997 if (ast_istype(exprs[0], ast_entfield)) {
998 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1000 (ast_expression*)parser->fold->imm_float[1]);
1002 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1004 (ast_expression*)parser->fold->imm_float[1]);
1008 out = fold_binary(ctx, subop,
1010 (ast_expression*)parser->fold->imm_float[1]);
1013 case opid2('+','='):
1014 case opid2('-','='):
1015 if (exprs[0]->vtype != exprs[1]->vtype ||
1016 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
1018 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1019 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1020 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1024 (void)check_write_to(ctx, exprs[0]);
1025 if (ast_istype(exprs[0], ast_entfield))
1026 assignop = type_storep_instr[exprs[0]->vtype];
1028 assignop = type_store_instr[exprs[0]->vtype];
1029 switch (exprs[0]->vtype) {
1031 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1032 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1033 exprs[0], exprs[1]);
1036 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1037 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1038 exprs[0], exprs[1]);
1041 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1042 type_name[exprs[0]->vtype],
1043 type_name[exprs[1]->vtype]);
1047 case opid2('*','='):
1048 case opid2('/','='):
1049 if (exprs[1]->vtype != TYPE_FLOAT ||
1050 !(exprs[0]->vtype == TYPE_FLOAT ||
1051 exprs[0]->vtype == TYPE_VECTOR))
1053 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1054 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1055 compile_error(ctx, "invalid types used in expression: %s and %s",
1059 (void)check_write_to(ctx, exprs[0]);
1060 if (ast_istype(exprs[0], ast_entfield))
1061 assignop = type_storep_instr[exprs[0]->vtype];
1063 assignop = type_store_instr[exprs[0]->vtype];
1064 switch (exprs[0]->vtype) {
1066 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1067 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1068 exprs[0], exprs[1]);
1071 if (op->id == opid2('*','=')) {
1072 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1073 exprs[0], exprs[1]);
1075 out = fold_binary(ctx, INSTR_DIV_F,
1076 (ast_expression*)parser->fold->imm_float[1],
1079 compile_error(ctx, "internal error: failed to generate division");
1082 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1087 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1088 type_name[exprs[0]->vtype],
1089 type_name[exprs[1]->vtype]);
1093 case opid2('&','='):
1094 case opid2('|','='):
1095 case opid2('^','='):
1096 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1097 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1098 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1099 compile_error(ctx, "invalid types used in expression: %s and %s",
1103 (void)check_write_to(ctx, exprs[0]);
1104 if (ast_istype(exprs[0], ast_entfield))
1105 assignop = type_storep_instr[exprs[0]->vtype];
1107 assignop = type_store_instr[exprs[0]->vtype];
1108 if (exprs[0]->vtype == TYPE_FLOAT)
1109 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1110 (op->id == opid2('^','=') ? VINSTR_BITXOR : op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1111 exprs[0], exprs[1]);
1113 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1114 (op->id == opid2('^','=') ? VINSTR_BITXOR_V : op->id == opid2('&','=') ? VINSTR_BITAND_V : VINSTR_BITOR_V),
1115 exprs[0], exprs[1]);
1117 case opid3('&','~','='):
1118 /* This is like: a &= ~(b);
1119 * But QC has no bitwise-not, so we implement it as
1122 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1123 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1124 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1125 compile_error(ctx, "invalid types used in expression: %s and %s",
1129 if (ast_istype(exprs[0], ast_entfield))
1130 assignop = type_storep_instr[exprs[0]->vtype];
1132 assignop = type_store_instr[exprs[0]->vtype];
1133 if (exprs[0]->vtype == TYPE_FLOAT)
1134 out = fold_binary(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1136 out = fold_binary(ctx, VINSTR_BITAND_V, exprs[0], exprs[1]);
1139 (void)check_write_to(ctx, exprs[0]);
1140 if (exprs[0]->vtype == TYPE_FLOAT)
1141 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1143 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_V, exprs[0], out);
1144 asbinstore->keep_dest = true;
1145 out = (ast_expression*)asbinstore;
1148 case opid3('l', 'e', 'n'):
1149 if (exprs[0]->vtype != TYPE_STRING && exprs[0]->vtype != TYPE_ARRAY) {
1150 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1151 compile_error(ast_ctx(exprs[0]), "invalid type for length operator: %s", ty1);
1154 /* strings must be const, arrays are statically sized */
1155 if (exprs[0]->vtype == TYPE_STRING &&
1156 !(((ast_value*)exprs[0])->hasvalue && ((ast_value*)exprs[0])->cvq == CV_CONST))
1158 compile_error(ast_ctx(exprs[0]), "operand of length operator not a valid constant expression");
1161 out = fold_op(parser->fold, op, exprs);
1164 case opid2('~', 'P'):
1165 if (exprs[0]->vtype != TYPE_FLOAT && exprs[0]->vtype != TYPE_VECTOR) {
1166 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1167 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1170 if (!(out = fold_op(parser->fold, op, exprs))) {
1171 if (exprs[0]->vtype == TYPE_FLOAT) {
1172 out = fold_binary(ctx, INSTR_SUB_F, (ast_expression*)parser->fold->imm_float[2], exprs[0]);
1174 out = fold_binary(ctx, INSTR_SUB_V, (ast_expression*)parser->fold->imm_vector[1], exprs[0]);
1181 compile_error(ctx, "failed to apply operator %s", op->op);
1185 vec_push(sy->out, syexp(ctx, out));
1189 static bool parser_close_call(parser_t *parser, shunt *sy)
1191 /* was a function call */
1192 ast_expression *fun;
1193 ast_value *funval = NULL;
1197 size_t paramcount, i;
1200 fid = vec_last(sy->ops).off;
1201 vec_shrinkby(sy->ops, 1);
1203 /* out[fid] is the function
1204 * everything above is parameters...
1206 if (!vec_size(sy->argc)) {
1207 parseerror(parser, "internal error: no argument counter available");
1211 paramcount = vec_last(sy->argc);
1214 if (vec_size(sy->out) < fid) {
1215 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1216 (unsigned long)vec_size(sy->out),
1218 (unsigned long)paramcount);
1223 * TODO handle this at the intrinsic level with an ast_intrinsic
1226 if ((fun = sy->out[fid].out) == intrin_debug_typestring(parser->intrin)) {
1228 if (fid+2 != vec_size(sy->out) ||
1229 vec_last(sy->out).block)
1231 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1234 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1235 ast_unref(vec_last(sy->out).out);
1236 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1237 (ast_expression*)fold_constgen_string(parser->fold, ty, false));
1238 vec_shrinkby(sy->out, 1);
1243 * Now we need to determine if the function that is being called is
1244 * an intrinsic so we can evaluate if the arguments to it are constant
1245 * and than fruitfully fold them.
1247 #define fold_can_1(X) \
1248 (ast_istype(((ast_expression*)(X)), ast_value) && (X)->hasvalue && ((X)->cvq == CV_CONST) && \
1249 ((ast_expression*)(X))->vtype != TYPE_FUNCTION)
1251 if (fid + 1 < vec_size(sy->out))
1254 for (i = 0; i < paramcount; ++i) {
1255 if (!fold_can_1((ast_value*)sy->out[fid + 1 + i].out)) {
1262 * All is well which ends well, if we make it into here we can ignore the
1263 * intrinsic call and just evaluate it i.e constant fold it.
1265 if (fold && ast_istype(fun, ast_value) && ((ast_value*)fun)->intrinsic) {
1266 ast_expression **exprs = NULL;
1267 ast_expression *foldval = NULL;
1269 for (i = 0; i < paramcount; i++)
1270 vec_push(exprs, sy->out[fid+1 + i].out);
1272 if (!(foldval = intrin_fold(parser->intrin, (ast_value*)fun, exprs))) {
1278 * Blub: what sorts of unreffing and resizing of
1279 * sy->out should I be doing here?
1281 sy->out[fid] = syexp(foldval->node.context, foldval);
1282 vec_shrinkby(sy->out, paramcount);
1289 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1294 if (fid+1 + paramcount != vec_size(sy->out)) {
1295 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1296 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1300 for (i = 0; i < paramcount; ++i)
1301 vec_push(call->params, sy->out[fid+1 + i].out);
1302 vec_shrinkby(sy->out, paramcount);
1303 (void)!ast_call_check_types(call, parser->function->vtype->expression.varparam);
1304 if (parser->max_param_count < paramcount)
1305 parser->max_param_count = paramcount;
1307 if (ast_istype(fun, ast_value)) {
1308 funval = (ast_value*)fun;
1309 if ((fun->flags & AST_FLAG_VARIADIC) &&
1310 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1312 call->va_count = (ast_expression*)fold_constgen_float(parser->fold, (qcfloat_t)paramcount, false);
1316 /* overwrite fid, the function, with a call */
1317 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1319 if (fun->vtype != TYPE_FUNCTION) {
1320 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1325 parseerror(parser, "could not determine function return type");
1328 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1330 if (fun->flags & AST_FLAG_DEPRECATED) {
1332 return !parsewarning(parser, WARN_DEPRECATED,
1333 "call to function (which is marked deprecated)\n",
1334 "-> it has been declared here: %s:%i",
1335 ast_ctx(fun).file, ast_ctx(fun).line);
1338 return !parsewarning(parser, WARN_DEPRECATED,
1339 "call to `%s` (which is marked deprecated)\n"
1340 "-> `%s` declared here: %s:%i",
1341 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1343 return !parsewarning(parser, WARN_DEPRECATED,
1344 "call to `%s` (deprecated: %s)\n"
1345 "-> `%s` declared here: %s:%i",
1346 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1350 if (vec_size(fun->params) != paramcount &&
1351 !((fun->flags & AST_FLAG_VARIADIC) &&
1352 vec_size(fun->params) < paramcount))
1354 const char *fewmany = (vec_size(fun->params) > paramcount) ? "few" : "many";
1356 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1357 "too %s parameters for call to %s: expected %i, got %i\n"
1358 " -> `%s` has been declared here: %s:%i",
1359 fewmany, fval->name, (int)vec_size(fun->params), (int)paramcount,
1360 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1362 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1363 "too %s parameters for function call: expected %i, got %i\n"
1364 " -> it has been declared here: %s:%i",
1365 fewmany, (int)vec_size(fun->params), (int)paramcount,
1366 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1373 static bool parser_close_paren(parser_t *parser, shunt *sy)
1375 if (!vec_size(sy->ops)) {
1376 parseerror(parser, "unmatched closing paren");
1380 while (vec_size(sy->ops)) {
1381 if (vec_last(sy->ops).isparen) {
1382 if (vec_last(sy->paren) == PAREN_FUNC) {
1384 if (!parser_close_call(parser, sy))
1388 if (vec_last(sy->paren) == PAREN_EXPR) {
1390 if (!vec_size(sy->out)) {
1391 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1392 vec_shrinkby(sy->ops, 1);
1395 vec_shrinkby(sy->ops, 1);
1398 if (vec_last(sy->paren) == PAREN_INDEX) {
1400 /* pop off the parenthesis */
1401 vec_shrinkby(sy->ops, 1);
1402 /* then apply the index operator */
1403 if (!parser_sy_apply_operator(parser, sy))
1407 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1408 vec_last(sy->paren) = PAREN_TERNARY2;
1409 /* pop off the parenthesis */
1410 vec_shrinkby(sy->ops, 1);
1413 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1416 if (!parser_sy_apply_operator(parser, sy))
1422 static void parser_reclassify_token(parser_t *parser)
1425 if (parser->tok >= TOKEN_START)
1427 for (i = 0; i < operator_count; ++i) {
1428 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1429 parser->tok = TOKEN_OPERATOR;
1435 static ast_expression* parse_vararg_do(parser_t *parser)
1437 ast_expression *idx, *out;
1439 ast_value *funtype = parser->function->vtype;
1440 lex_ctx_t ctx = parser_ctx(parser);
1442 if (!parser->function->varargs) {
1443 parseerror(parser, "function has no variable argument list");
1447 if (!parser_next(parser) || parser->tok != '(') {
1448 parseerror(parser, "expected parameter index and type in parenthesis");
1451 if (!parser_next(parser)) {
1452 parseerror(parser, "error parsing parameter index");
1456 idx = parse_expression_leave(parser, true, false, false);
1460 if (parser->tok != ',') {
1461 if (parser->tok != ')') {
1463 parseerror(parser, "expected comma after parameter index");
1466 /* vararg piping: ...(start) */
1467 out = (ast_expression*)ast_argpipe_new(ctx, idx);
1471 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1473 parseerror(parser, "expected typename for vararg");
1477 typevar = parse_typename(parser, NULL, NULL, NULL);
1483 if (parser->tok != ')') {
1485 ast_delete(typevar);
1486 parseerror(parser, "expected closing paren");
1490 if (funtype->expression.varparam &&
1491 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1495 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1496 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1497 compile_error(ast_ctx(typevar),
1498 "function was declared to take varargs of type `%s`, requested type is: %s",
1502 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1503 ast_type_adopt(out, typevar);
1504 ast_delete(typevar);
1508 static ast_expression* parse_vararg(parser_t *parser)
1510 bool old_noops = parser->lex->flags.noops;
1512 ast_expression *out;
1514 parser->lex->flags.noops = true;
1515 out = parse_vararg_do(parser);
1517 parser->lex->flags.noops = old_noops;
1521 /* not to be exposed */
1522 bool ftepp_predef_exists(const char *name);
1523 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1525 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1526 parser->tok == TOKEN_IDENT &&
1527 !strcmp(parser_tokval(parser), "_"))
1529 /* a translatable string */
1532 parser->lex->flags.noops = true;
1533 if (!parser_next(parser) || parser->tok != '(') {
1534 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1537 parser->lex->flags.noops = false;
1538 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1539 parseerror(parser, "expected a constant string in translatable-string extension");
1542 val = (ast_value*)fold_constgen_string(parser->fold, parser_tokval(parser), true);
1545 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1547 if (!parser_next(parser) || parser->tok != ')') {
1548 parseerror(parser, "expected closing paren after translatable string");
1553 else if (parser->tok == TOKEN_DOTS)
1556 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1557 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1560 va = parse_vararg(parser);
1563 vec_push(sy->out, syexp(parser_ctx(parser), va));
1566 else if (parser->tok == TOKEN_FLOATCONST) {
1567 ast_expression *val = fold_constgen_float(parser->fold, (parser_token(parser)->constval.f), false);
1570 vec_push(sy->out, syexp(parser_ctx(parser), val));
1573 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1574 ast_expression *val = fold_constgen_float(parser->fold, (qcfloat_t)(parser_token(parser)->constval.i), false);
1577 vec_push(sy->out, syexp(parser_ctx(parser), val));
1580 else if (parser->tok == TOKEN_STRINGCONST) {
1581 ast_expression *val = fold_constgen_string(parser->fold, parser_tokval(parser), false);
1584 vec_push(sy->out, syexp(parser_ctx(parser), val));
1587 else if (parser->tok == TOKEN_VECTORCONST) {
1588 ast_expression *val = fold_constgen_vector(parser->fold, parser_token(parser)->constval.v);
1591 vec_push(sy->out, syexp(parser_ctx(parser), val));
1594 else if (parser->tok == TOKEN_IDENT)
1596 const char *ctoken = parser_tokval(parser);
1597 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1598 ast_expression *var;
1599 /* a_vector.{x,y,z} */
1600 if (!vec_size(sy->ops) ||
1601 !vec_last(sy->ops).etype ||
1602 operators[vec_last(sy->ops).etype-1].id != opid1('.'))
1604 /* When adding more intrinsics, fix the above condition */
1607 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1609 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1611 var = parser_find_var(parser, parser_tokval(parser));
1613 var = parser_find_field(parser, parser_tokval(parser));
1615 if (!var && with_labels) {
1616 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1618 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1619 var = (ast_expression*)lbl;
1620 vec_push(parser->labels, lbl);
1623 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
1624 var = (ast_expression*)fold_constgen_string(parser->fold, parser->function->name, false);
1627 * now we try for the real intrinsic hashtable. If the string
1628 * begins with __builtin, we simply skip past it, otherwise we
1629 * use the identifier as is.
1631 if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
1632 var = intrin_func(parser->intrin, parser_tokval(parser));
1636 * Try it again, intrin_func deals with the alias method as well
1637 * the first one masks for __builtin though, we emit warning here.
1640 if ((var = intrin_func(parser->intrin, parser_tokval(parser)))) {
1641 (void)!compile_warning(
1644 "using implicitly defined builtin `__builtin_%s' for `%s'",
1645 parser_tokval(parser),
1646 parser_tokval(parser)
1653 char *correct = NULL;
1657 * sometimes people use preprocessing predefs without enabling them
1658 * i've done this thousands of times already myself. Lets check for
1659 * it in the predef table. And diagnose it better :)
1661 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
1662 parseerror(parser, "unexpected identifier: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1667 * TODO: determine the best score for the identifier: be it
1668 * a variable, a field.
1670 * We should also consider adding correction tables for
1671 * other things as well.
1673 if (OPTS_OPTION_BOOL(OPTION_CORRECTION) && strlen(parser_tokval(parser)) <= 16) {
1675 correct_init(&corr);
1677 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1678 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1679 if (strcmp(correct, parser_tokval(parser))) {
1686 correct_free(&corr);
1689 parseerror(parser, "unexpected identifier: %s (did you mean %s?)", parser_tokval(parser), correct);
1694 parseerror(parser, "unexpected identifier: %s", parser_tokval(parser));
1700 if (ast_istype(var, ast_value)) {
1701 ((ast_value*)var)->uses++;
1703 else if (ast_istype(var, ast_member)) {
1704 ast_member *mem = (ast_member*)var;
1705 if (ast_istype(mem->owner, ast_value))
1706 ((ast_value*)(mem->owner))->uses++;
1709 vec_push(sy->out, syexp(parser_ctx(parser), var));
1712 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1716 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1718 ast_expression *expr = NULL;
1721 bool wantop = false;
1722 /* only warn once about an assignment in a truth value because the current code
1723 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1725 bool warn_parenthesis = true;
1727 /* count the parens because an if starts with one, so the
1728 * end of a condition is an unmatched closing paren
1732 memset(&sy, 0, sizeof(sy));
1734 parser->lex->flags.noops = false;
1736 parser_reclassify_token(parser);
1740 if (parser->tok == TOKEN_TYPENAME) {
1741 parseerror(parser, "unexpected typename `%s`", parser_tokval(parser));
1745 if (parser->tok == TOKEN_OPERATOR)
1747 /* classify the operator */
1748 const oper_info *op;
1749 const oper_info *olast = NULL;
1751 for (o = 0; o < operator_count; ++o) {
1752 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1753 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1754 !strcmp(parser_tokval(parser), operators[o].op))
1759 if (o == operator_count) {
1760 compile_error(parser_ctx(parser), "unexpected operator: %s", parser_tokval(parser));
1763 /* found an operator */
1766 /* when declaring variables, a comma starts a new variable */
1767 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
1768 /* fixup the token */
1773 /* a colon without a pervious question mark cannot be a ternary */
1774 if (!ternaries && op->id == opid2(':','?')) {
1779 if (op->id == opid1(',')) {
1780 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1781 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1785 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1786 olast = &operators[vec_last(sy.ops).etype-1];
1788 /* first only apply higher precedences, assoc_left+equal comes after we warn about precedence rules */
1789 while (olast && op->prec < olast->prec)
1791 if (!parser_sy_apply_operator(parser, &sy))
1793 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1794 olast = &operators[vec_last(sy.ops).etype-1];
1799 #define IsAssignOp(x) (\
1800 (x) == opid1('=') || \
1801 (x) == opid2('+','=') || \
1802 (x) == opid2('-','=') || \
1803 (x) == opid2('*','=') || \
1804 (x) == opid2('/','=') || \
1805 (x) == opid2('%','=') || \
1806 (x) == opid2('&','=') || \
1807 (x) == opid2('|','=') || \
1808 (x) == opid3('&','~','=') \
1810 if (warn_parenthesis) {
1811 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1812 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1813 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
1816 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1817 warn_parenthesis = false;
1820 if (olast && olast->id != op->id) {
1821 if ((op->id == opid1('&') || op->id == opid1('|') || op->id == opid1('^')) &&
1822 (olast->id == opid1('&') || olast->id == opid1('|') || olast->id == opid1('^')))
1824 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around bitwise operations");
1825 warn_parenthesis = false;
1827 else if ((op->id == opid2('&','&') || op->id == opid2('|','|')) &&
1828 (olast->id == opid2('&','&') || olast->id == opid2('|','|')))
1830 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around logical operations");
1831 warn_parenthesis = false;
1837 (op->prec < olast->prec) ||
1838 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1840 if (!parser_sy_apply_operator(parser, &sy))
1842 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1843 olast = &operators[vec_last(sy.ops).etype-1];
1848 if (op->id == opid1('(')) {
1850 size_t sycount = vec_size(sy.out);
1851 /* we expected an operator, this is the function-call operator */
1852 vec_push(sy.paren, PAREN_FUNC);
1853 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
1854 vec_push(sy.argc, 0);
1856 vec_push(sy.paren, PAREN_EXPR);
1857 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1860 } else if (op->id == opid1('[')) {
1862 parseerror(parser, "unexpected array subscript");
1865 vec_push(sy.paren, PAREN_INDEX);
1866 /* push both the operator and the paren, this makes life easier */
1867 vec_push(sy.ops, syop(parser_ctx(parser), op));
1868 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1870 } else if (op->id == opid2('?',':')) {
1871 vec_push(sy.ops, syop(parser_ctx(parser), op));
1872 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1875 vec_push(sy.paren, PAREN_TERNARY1);
1876 } else if (op->id == opid2(':','?')) {
1877 if (!vec_size(sy.paren)) {
1878 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1881 if (vec_last(sy.paren) != PAREN_TERNARY1) {
1882 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1885 if (!parser_close_paren(parser, &sy))
1887 vec_push(sy.ops, syop(parser_ctx(parser), op));
1891 vec_push(sy.ops, syop(parser_ctx(parser), op));
1892 wantop = !!(op->flags & OP_SUFFIX);
1895 else if (parser->tok == ')') {
1896 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1897 if (!parser_sy_apply_operator(parser, &sy))
1900 if (!vec_size(sy.paren))
1903 if (vec_last(sy.paren) == PAREN_TERNARY1) {
1904 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
1907 if (!parser_close_paren(parser, &sy))
1910 /* must be a function call without parameters */
1911 if (vec_last(sy.paren) != PAREN_FUNC) {
1912 parseerror(parser, "closing paren in invalid position");
1915 if (!parser_close_paren(parser, &sy))
1920 else if (parser->tok == '(') {
1921 parseerror(parser, "internal error: '(' should be classified as operator");
1924 else if (parser->tok == '[') {
1925 parseerror(parser, "internal error: '[' should be classified as operator");
1928 else if (parser->tok == ']') {
1929 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1930 if (!parser_sy_apply_operator(parser, &sy))
1933 if (!vec_size(sy.paren))
1935 if (vec_last(sy.paren) != PAREN_INDEX) {
1936 parseerror(parser, "mismatched parentheses, unexpected ']'");
1939 if (!parser_close_paren(parser, &sy))
1944 if (!parse_sya_operand(parser, &sy, with_labels))
1947 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
1948 vec_last(sy.argc)++;
1953 /* in this case we might want to allow constant string concatenation */
1954 bool concatenated = false;
1955 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
1956 ast_expression *lexpr = vec_last(sy.out).out;
1957 if (ast_istype(lexpr, ast_value)) {
1958 ast_value *last = (ast_value*)lexpr;
1959 if (last->isimm == true && last->cvq == CV_CONST &&
1960 last->hasvalue && last->expression.vtype == TYPE_STRING)
1962 char *newstr = NULL;
1963 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
1964 vec_last(sy.out).out = (ast_expression*)fold_constgen_string(parser->fold, newstr, false);
1966 concatenated = true;
1970 if (!concatenated) {
1971 parseerror(parser, "expected operator or end of statement");
1976 if (!parser_next(parser)) {
1979 if (parser->tok == ';' ||
1980 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
1981 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
1987 while (vec_size(sy.ops)) {
1988 if (!parser_sy_apply_operator(parser, &sy))
1992 parser->lex->flags.noops = true;
1993 if (vec_size(sy.out) != 1) {
1994 parseerror(parser, "expression expected");
1997 expr = sy.out[0].out;
2000 if (vec_size(sy.paren)) {
2001 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
2009 parser->lex->flags.noops = true;
2010 for (i = 0; i < vec_size(sy.out); ++i) {
2012 ast_unref(sy.out[i].out);
2021 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
2023 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
2026 if (parser->tok != ';') {
2027 parseerror(parser, "semicolon expected after expression");
2031 if (!parser_next(parser)) {
2038 static void parser_enterblock(parser_t *parser)
2040 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2041 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2042 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2043 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2044 vec_push(parser->_block_ctx, parser_ctx(parser));
2047 vec_push(parser->correct_variables, correct_trie_new());
2048 vec_push(parser->correct_variables_score, NULL);
2051 static bool parser_leaveblock(parser_t *parser)
2054 size_t locals, typedefs;
2056 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2057 parseerror(parser, "internal error: parser_leaveblock with no block");
2061 util_htdel(vec_last(parser->variables));
2062 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2064 vec_pop(parser->variables);
2065 vec_pop(parser->correct_variables);
2066 vec_pop(parser->correct_variables_score);
2067 if (!vec_size(parser->_blocklocals)) {
2068 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2072 locals = vec_last(parser->_blocklocals);
2073 vec_pop(parser->_blocklocals);
2074 while (vec_size(parser->_locals) != locals) {
2075 ast_expression *e = vec_last(parser->_locals);
2076 ast_value *v = (ast_value*)e;
2077 vec_pop(parser->_locals);
2078 if (ast_istype(e, ast_value) && !v->uses) {
2079 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2084 typedefs = vec_last(parser->_blocktypedefs);
2085 while (vec_size(parser->_typedefs) != typedefs) {
2086 ast_delete(vec_last(parser->_typedefs));
2087 vec_pop(parser->_typedefs);
2089 util_htdel(vec_last(parser->typedefs));
2090 vec_pop(parser->typedefs);
2092 vec_pop(parser->_block_ctx);
2097 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2099 vec_push(parser->_locals, e);
2100 util_htset(vec_last(parser->variables), name, (void*)e);
2104 vec_last(parser->correct_variables),
2105 &vec_last(parser->correct_variables_score),
2110 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2112 vec_push(parser->globals, e);
2113 util_htset(parser->htglobals, name, e);
2117 parser->correct_variables[0],
2118 &parser->correct_variables_score[0],
2123 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2127 ast_expression *prev;
2129 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2131 ast_type_to_string(cond, ty, sizeof(ty));
2132 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2135 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2138 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2141 parseerror(parser, "internal error: failed to process condition");
2146 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2148 /* vector types need to be cast to true booleans */
2149 ast_binary *bin = (ast_binary*)cond;
2150 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2152 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2154 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2157 parseerror(parser, "internal error: failed to process condition");
2164 unary = (ast_unary*)cond;
2165 /* ast_istype dereferences cond, should test here for safety */
2166 while (cond && ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2168 cond = unary->operand;
2169 unary->operand = NULL;
2172 unary = (ast_unary*)cond;
2176 parseerror(parser, "internal error: failed to process condition");
2178 if (ifnot) *_ifnot = !*_ifnot;
2182 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2185 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2188 lex_ctx_t ctx = parser_ctx(parser);
2190 (void)block; /* not touching */
2192 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2193 if (!parser_next(parser)) {
2194 parseerror(parser, "expected condition or 'not'");
2197 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2199 if (!parser_next(parser)) {
2200 parseerror(parser, "expected condition in parenthesis");
2204 if (parser->tok != '(') {
2205 parseerror(parser, "expected 'if' condition in parenthesis");
2208 /* parse into the expression */
2209 if (!parser_next(parser)) {
2210 parseerror(parser, "expected 'if' condition after opening paren");
2213 /* parse the condition */
2214 cond = parse_expression_leave(parser, false, true, false);
2218 if (parser->tok != ')') {
2219 parseerror(parser, "expected closing paren after 'if' condition");
2223 /* parse into the 'then' branch */
2224 if (!parser_next(parser)) {
2225 parseerror(parser, "expected statement for on-true branch of 'if'");
2229 if (!parse_statement_or_block(parser, &ontrue)) {
2234 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2235 /* check for an else */
2236 if (!strcmp(parser_tokval(parser), "else")) {
2237 /* parse into the 'else' branch */
2238 if (!parser_next(parser)) {
2239 parseerror(parser, "expected on-false branch after 'else'");
2244 if (!parse_statement_or_block(parser, &onfalse)) {
2251 cond = process_condition(parser, cond, &ifnot);
2253 if (ontrue) ast_delete(ontrue);
2254 if (onfalse) ast_delete(onfalse);
2259 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2261 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2262 *out = (ast_expression*)ifthen;
2266 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2267 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2272 /* skip the 'while' and get the body */
2273 if (!parser_next(parser)) {
2274 if (OPTS_FLAG(LOOP_LABELS))
2275 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2277 parseerror(parser, "expected 'while' condition in parenthesis");
2281 if (parser->tok == ':') {
2282 if (!OPTS_FLAG(LOOP_LABELS))
2283 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2284 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2285 parseerror(parser, "expected loop label");
2288 label = util_strdup(parser_tokval(parser));
2289 if (!parser_next(parser)) {
2291 parseerror(parser, "expected 'while' condition in parenthesis");
2296 if (parser->tok != '(') {
2297 parseerror(parser, "expected 'while' condition in parenthesis");
2301 vec_push(parser->breaks, label);
2302 vec_push(parser->continues, label);
2304 rv = parse_while_go(parser, block, out);
2307 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2308 parseerror(parser, "internal error: label stack corrupted");
2314 vec_pop(parser->breaks);
2315 vec_pop(parser->continues);
2320 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2323 ast_expression *cond, *ontrue;
2327 lex_ctx_t ctx = parser_ctx(parser);
2329 (void)block; /* not touching */
2331 /* parse into the expression */
2332 if (!parser_next(parser)) {
2333 parseerror(parser, "expected 'while' condition after opening paren");
2336 /* parse the condition */
2337 cond = parse_expression_leave(parser, false, true, false);
2341 if (parser->tok != ')') {
2342 parseerror(parser, "expected closing paren after 'while' condition");
2346 /* parse into the 'then' branch */
2347 if (!parser_next(parser)) {
2348 parseerror(parser, "expected while-loop body");
2352 if (!parse_statement_or_block(parser, &ontrue)) {
2357 cond = process_condition(parser, cond, &ifnot);
2362 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2363 *out = (ast_expression*)aloop;
2367 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2368 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2373 /* skip the 'do' and get the body */
2374 if (!parser_next(parser)) {
2375 if (OPTS_FLAG(LOOP_LABELS))
2376 parseerror(parser, "expected loop label or body");
2378 parseerror(parser, "expected loop body");
2382 if (parser->tok == ':') {
2383 if (!OPTS_FLAG(LOOP_LABELS))
2384 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2385 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2386 parseerror(parser, "expected loop label");
2389 label = util_strdup(parser_tokval(parser));
2390 if (!parser_next(parser)) {
2392 parseerror(parser, "expected loop body");
2397 vec_push(parser->breaks, label);
2398 vec_push(parser->continues, label);
2400 rv = parse_dowhile_go(parser, block, out);
2403 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2404 parseerror(parser, "internal error: label stack corrupted");
2407 * Test for NULL otherwise ast_delete dereferences null pointer
2415 vec_pop(parser->breaks);
2416 vec_pop(parser->continues);
2421 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2424 ast_expression *cond, *ontrue;
2428 lex_ctx_t ctx = parser_ctx(parser);
2430 (void)block; /* not touching */
2432 if (!parse_statement_or_block(parser, &ontrue))
2435 /* expect the "while" */
2436 if (parser->tok != TOKEN_KEYWORD ||
2437 strcmp(parser_tokval(parser), "while"))
2439 parseerror(parser, "expected 'while' and condition");
2444 /* skip the 'while' and check for opening paren */
2445 if (!parser_next(parser) || parser->tok != '(') {
2446 parseerror(parser, "expected 'while' condition in parenthesis");
2450 /* parse into the expression */
2451 if (!parser_next(parser)) {
2452 parseerror(parser, "expected 'while' condition after opening paren");
2456 /* parse the condition */
2457 cond = parse_expression_leave(parser, false, true, false);
2461 if (parser->tok != ')') {
2462 parseerror(parser, "expected closing paren after 'while' condition");
2468 if (!parser_next(parser) || parser->tok != ';') {
2469 parseerror(parser, "expected semicolon after condition");
2475 if (!parser_next(parser)) {
2476 parseerror(parser, "parse error");
2482 cond = process_condition(parser, cond, &ifnot);
2487 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2488 *out = (ast_expression*)aloop;
2492 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2493 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2498 /* skip the 'for' and check for opening paren */
2499 if (!parser_next(parser)) {
2500 if (OPTS_FLAG(LOOP_LABELS))
2501 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2503 parseerror(parser, "expected 'for' expressions in parenthesis");
2507 if (parser->tok == ':') {
2508 if (!OPTS_FLAG(LOOP_LABELS))
2509 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2510 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2511 parseerror(parser, "expected loop label");
2514 label = util_strdup(parser_tokval(parser));
2515 if (!parser_next(parser)) {
2517 parseerror(parser, "expected 'for' expressions in parenthesis");
2522 if (parser->tok != '(') {
2523 parseerror(parser, "expected 'for' expressions in parenthesis");
2527 vec_push(parser->breaks, label);
2528 vec_push(parser->continues, label);
2530 rv = parse_for_go(parser, block, out);
2533 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2534 parseerror(parser, "internal error: label stack corrupted");
2540 vec_pop(parser->breaks);
2541 vec_pop(parser->continues);
2545 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2548 ast_expression *initexpr, *cond, *increment, *ontrue;
2553 lex_ctx_t ctx = parser_ctx(parser);
2555 parser_enterblock(parser);
2562 /* parse into the expression */
2563 if (!parser_next(parser)) {
2564 parseerror(parser, "expected 'for' initializer after opening paren");
2569 if (parser->tok == TOKEN_IDENT)
2570 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2572 if (typevar || parser->tok == TOKEN_TYPENAME) {
2574 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2575 if (parsewarning(parser, WARN_EXTENSIONS,
2576 "current standard does not allow variable declarations in for-loop initializers"))
2580 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2583 else if (parser->tok != ';')
2585 initexpr = parse_expression_leave(parser, false, false, false);
2590 /* move on to condition */
2591 if (parser->tok != ';') {
2592 parseerror(parser, "expected semicolon after for-loop initializer");
2595 if (!parser_next(parser)) {
2596 parseerror(parser, "expected for-loop condition");
2600 /* parse the condition */
2601 if (parser->tok != ';') {
2602 cond = parse_expression_leave(parser, false, true, false);
2607 /* move on to incrementor */
2608 if (parser->tok != ';') {
2609 parseerror(parser, "expected semicolon after for-loop initializer");
2612 if (!parser_next(parser)) {
2613 parseerror(parser, "expected for-loop condition");
2617 /* parse the incrementor */
2618 if (parser->tok != ')') {
2619 lex_ctx_t condctx = parser_ctx(parser);
2620 increment = parse_expression_leave(parser, false, false, false);
2623 if (!ast_side_effects(increment)) {
2624 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2630 if (parser->tok != ')') {
2631 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2634 /* parse into the 'then' branch */
2635 if (!parser_next(parser)) {
2636 parseerror(parser, "expected for-loop body");
2639 if (!parse_statement_or_block(parser, &ontrue))
2643 cond = process_condition(parser, cond, &ifnot);
2647 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2648 *out = (ast_expression*)aloop;
2650 if (!parser_leaveblock(parser)) {
2656 if (initexpr) ast_unref(initexpr);
2657 if (cond) ast_unref(cond);
2658 if (increment) ast_unref(increment);
2659 (void)!parser_leaveblock(parser);
2663 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2665 ast_expression *exp = NULL;
2666 ast_expression *var = NULL;
2667 ast_return *ret = NULL;
2668 ast_value *retval = parser->function->return_value;
2669 ast_value *expected = parser->function->vtype;
2671 lex_ctx_t ctx = parser_ctx(parser);
2673 (void)block; /* not touching */
2675 if (!parser_next(parser)) {
2676 parseerror(parser, "expected return expression");
2680 /* return assignments */
2681 if (parser->tok == '=') {
2682 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
2683 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
2687 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
2689 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
2690 parseerror(parser, "invalid return type: `%s'", ty1);
2694 if (!parser_next(parser)) {
2695 parseerror(parser, "expected return assignment expression");
2699 if (!(exp = parse_expression_leave(parser, false, false, false)))
2702 /* prepare the return value */
2704 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
2705 ast_type_adopt(retval, expected->expression.next);
2706 parser->function->return_value = retval;
2709 if (!ast_compare_type(exp, (ast_expression*)retval)) {
2710 char ty1[1024], ty2[1024];
2711 ast_type_to_string(exp, ty1, sizeof(ty1));
2712 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
2713 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
2716 /* store to 'return' local variable */
2717 var = (ast_expression*)ast_store_new(
2719 type_store_instr[expected->expression.next->vtype],
2720 (ast_expression*)retval, exp);
2727 if (parser->tok != ';')
2728 parseerror(parser, "missing semicolon after return assignment");
2729 else if (!parser_next(parser))
2730 parseerror(parser, "parse error after return assignment");
2736 if (parser->tok != ';') {
2737 exp = parse_expression(parser, false, false);
2741 if (exp->vtype != TYPE_NIL &&
2742 exp->vtype != ((ast_expression*)expected)->next->vtype)
2744 parseerror(parser, "return with invalid expression");
2747 ret = ast_return_new(ctx, exp);
2753 if (!parser_next(parser))
2754 parseerror(parser, "parse error");
2756 if (!retval && expected->expression.next->vtype != TYPE_VOID)
2758 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2760 ret = ast_return_new(ctx, (ast_expression*)retval);
2762 *out = (ast_expression*)ret;
2766 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2769 unsigned int levels = 0;
2770 lex_ctx_t ctx = parser_ctx(parser);
2771 const char **loops = (is_continue ? parser->continues : parser->breaks);
2773 (void)block; /* not touching */
2774 if (!parser_next(parser)) {
2775 parseerror(parser, "expected semicolon or loop label");
2779 if (!vec_size(loops)) {
2781 parseerror(parser, "`continue` can only be used inside loops");
2783 parseerror(parser, "`break` can only be used inside loops or switches");
2786 if (parser->tok == TOKEN_IDENT) {
2787 if (!OPTS_FLAG(LOOP_LABELS))
2788 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2789 i = vec_size(loops);
2791 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2794 parseerror(parser, "no such loop to %s: `%s`",
2795 (is_continue ? "continue" : "break out of"),
2796 parser_tokval(parser));
2801 if (!parser_next(parser)) {
2802 parseerror(parser, "expected semicolon");
2807 if (parser->tok != ';') {
2808 parseerror(parser, "expected semicolon");
2812 if (!parser_next(parser))
2813 parseerror(parser, "parse error");
2815 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2819 /* returns true when it was a variable qualifier, false otherwise!
2820 * on error, cvq is set to CV_WRONG
2827 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2829 bool had_const = false;
2830 bool had_var = false;
2831 bool had_noref = false;
2832 bool had_attrib = false;
2833 bool had_static = false;
2836 static attribute_t attributes[] = {
2837 { "noreturn", AST_FLAG_NORETURN },
2838 { "inline", AST_FLAG_INLINE },
2839 { "eraseable", AST_FLAG_ERASEABLE },
2840 { "accumulate", AST_FLAG_ACCUMULATE },
2841 { "last", AST_FLAG_FINAL_DECL }
2848 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2850 /* parse an attribute */
2851 if (!parser_next(parser)) {
2852 parseerror(parser, "expected attribute after `[[`");
2857 for (i = 0; i < GMQCC_ARRAY_COUNT(attributes); i++) {
2858 if (!strcmp(parser_tokval(parser), attributes[i].name)) {
2859 flags |= attributes[i].flag;
2860 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2861 parseerror(parser, "`%s` attribute has no parameters, expected `]]`",
2862 attributes[i].name);
2870 if (i != GMQCC_ARRAY_COUNT(attributes))
2874 if (!strcmp(parser_tokval(parser), "noref")) {
2876 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2877 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2882 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
2883 flags |= AST_FLAG_ALIAS;
2886 if (!parser_next(parser)) {
2887 parseerror(parser, "parse error in attribute");
2891 if (parser->tok == '(') {
2892 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2893 parseerror(parser, "`alias` attribute missing parameter");
2897 *message = util_strdup(parser_tokval(parser));
2899 if (!parser_next(parser)) {
2900 parseerror(parser, "parse error in attribute");
2904 if (parser->tok != ')') {
2905 parseerror(parser, "`alias` attribute expected `)` after parameter");
2909 if (!parser_next(parser)) {
2910 parseerror(parser, "parse error in attribute");
2915 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2916 parseerror(parser, "`alias` attribute expected `]]`");
2920 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2921 flags |= AST_FLAG_DEPRECATED;
2924 if (!parser_next(parser)) {
2925 parseerror(parser, "parse error in attribute");
2929 if (parser->tok == '(') {
2930 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2931 parseerror(parser, "`deprecated` attribute missing parameter");
2935 *message = util_strdup(parser_tokval(parser));
2937 if (!parser_next(parser)) {
2938 parseerror(parser, "parse error in attribute");
2942 if(parser->tok != ')') {
2943 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2947 if (!parser_next(parser)) {
2948 parseerror(parser, "parse error in attribute");
2953 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2954 parseerror(parser, "`deprecated` attribute expected `]]`");
2957 if (*message) mem_d(*message);
2963 else if (!strcmp(parser_tokval(parser), "coverage") && !(flags & AST_FLAG_COVERAGE)) {
2964 flags |= AST_FLAG_COVERAGE;
2965 if (!parser_next(parser)) {
2967 parseerror(parser, "parse error in coverage attribute");
2971 if (parser->tok == '(') {
2972 if (!parser_next(parser)) {
2974 parseerror(parser, "invalid parameter for coverage() attribute\n"
2975 "valid are: block");
2979 if (parser->tok != ')') {
2981 if (parser->tok != TOKEN_IDENT)
2982 goto bad_coverage_arg;
2983 if (!strcmp(parser_tokval(parser), "block"))
2984 flags |= AST_FLAG_BLOCK_COVERAGE;
2985 else if (!strcmp(parser_tokval(parser), "none"))
2986 flags &= ~(AST_FLAG_COVERAGE_MASK);
2988 goto bad_coverage_arg;
2989 if (!parser_next(parser))
2990 goto error_in_coverage;
2991 if (parser->tok == ',') {
2992 if (!parser_next(parser))
2993 goto error_in_coverage;
2995 } while (parser->tok != ')');
2997 if (parser->tok != ')' || !parser_next(parser))
2998 goto error_in_coverage;
3000 /* without parameter [[coverage]] equals [[coverage(block)]] */
3001 flags |= AST_FLAG_BLOCK_COVERAGE;
3006 /* Skip tokens until we hit a ]] */
3007 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
3008 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3009 if (!parser_next(parser)) {
3010 parseerror(parser, "error inside attribute");
3017 else if (with_local && !strcmp(parser_tokval(parser), "static"))
3019 else if (!strcmp(parser_tokval(parser), "const"))
3021 else if (!strcmp(parser_tokval(parser), "var"))
3023 else if (with_local && !strcmp(parser_tokval(parser), "local"))
3025 else if (!strcmp(parser_tokval(parser), "noref"))
3027 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
3034 if (!parser_next(parser))
3044 *is_static = had_static;
3048 parseerror(parser, "parse error after variable qualifier");
3053 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
3054 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
3059 /* skip the 'while' and get the body */
3060 if (!parser_next(parser)) {
3061 if (OPTS_FLAG(LOOP_LABELS))
3062 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
3064 parseerror(parser, "expected 'switch' operand in parenthesis");
3068 if (parser->tok == ':') {
3069 if (!OPTS_FLAG(LOOP_LABELS))
3070 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3071 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3072 parseerror(parser, "expected loop label");
3075 label = util_strdup(parser_tokval(parser));
3076 if (!parser_next(parser)) {
3078 parseerror(parser, "expected 'switch' operand in parenthesis");
3083 if (parser->tok != '(') {
3084 parseerror(parser, "expected 'switch' operand in parenthesis");
3088 vec_push(parser->breaks, label);
3090 rv = parse_switch_go(parser, block, out);
3093 if (vec_last(parser->breaks) != label) {
3094 parseerror(parser, "internal error: label stack corrupted");
3100 vec_pop(parser->breaks);
3105 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3107 ast_expression *operand;
3110 ast_switch *switchnode;
3111 ast_switch_case swcase;
3114 bool noref, is_static;
3115 uint32_t qflags = 0;
3117 lex_ctx_t ctx = parser_ctx(parser);
3119 (void)block; /* not touching */
3122 /* parse into the expression */
3123 if (!parser_next(parser)) {
3124 parseerror(parser, "expected switch operand");
3127 /* parse the operand */
3128 operand = parse_expression_leave(parser, false, false, false);
3132 switchnode = ast_switch_new(ctx, operand);
3135 if (parser->tok != ')') {
3136 ast_delete(switchnode);
3137 parseerror(parser, "expected closing paren after 'switch' operand");
3141 /* parse over the opening paren */
3142 if (!parser_next(parser) || parser->tok != '{') {
3143 ast_delete(switchnode);
3144 parseerror(parser, "expected list of cases");
3148 if (!parser_next(parser)) {
3149 ast_delete(switchnode);
3150 parseerror(parser, "expected 'case' or 'default'");
3154 /* new block; allow some variables to be declared here */
3155 parser_enterblock(parser);
3158 if (parser->tok == TOKEN_IDENT)
3159 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3160 if (typevar || parser->tok == TOKEN_TYPENAME) {
3161 if (!parse_variable(parser, block, true, CV_NONE, typevar, false, false, 0, NULL)) {
3162 ast_delete(switchnode);
3167 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3169 if (cvq == CV_WRONG) {
3170 ast_delete(switchnode);
3173 if (!parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, NULL)) {
3174 ast_delete(switchnode);
3183 while (parser->tok != '}') {
3184 ast_block *caseblock;
3186 if (!strcmp(parser_tokval(parser), "case")) {
3187 if (!parser_next(parser)) {
3188 ast_delete(switchnode);
3189 parseerror(parser, "expected expression for case");
3192 swcase.value = parse_expression_leave(parser, false, false, false);
3193 if (!swcase.value) {
3194 ast_delete(switchnode);
3195 parseerror(parser, "expected expression for case");
3198 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3199 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3200 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3206 else if (!strcmp(parser_tokval(parser), "default")) {
3207 swcase.value = NULL;
3208 if (!parser_next(parser)) {
3209 ast_delete(switchnode);
3210 parseerror(parser, "expected colon");
3215 ast_delete(switchnode);
3216 parseerror(parser, "expected 'case' or 'default'");
3220 /* Now the colon and body */
3221 if (parser->tok != ':') {
3222 if (swcase.value) ast_unref(swcase.value);
3223 ast_delete(switchnode);
3224 parseerror(parser, "expected colon");
3228 if (!parser_next(parser)) {
3229 if (swcase.value) ast_unref(swcase.value);
3230 ast_delete(switchnode);
3231 parseerror(parser, "expected statements or case");
3234 caseblock = ast_block_new(parser_ctx(parser));
3236 if (swcase.value) ast_unref(swcase.value);
3237 ast_delete(switchnode);
3240 swcase.code = (ast_expression*)caseblock;
3241 vec_push(switchnode->cases, swcase);
3243 ast_expression *expr;
3244 if (parser->tok == '}')
3246 if (parser->tok == TOKEN_KEYWORD) {
3247 if (!strcmp(parser_tokval(parser), "case") ||
3248 !strcmp(parser_tokval(parser), "default"))
3253 if (!parse_statement(parser, caseblock, &expr, true)) {
3254 ast_delete(switchnode);
3259 if (!ast_block_add_expr(caseblock, expr)) {
3260 ast_delete(switchnode);
3266 parser_leaveblock(parser);
3269 if (parser->tok != '}') {
3270 ast_delete(switchnode);
3271 parseerror(parser, "expected closing paren of case list");
3274 if (!parser_next(parser)) {
3275 ast_delete(switchnode);
3276 parseerror(parser, "parse error after switch");
3279 *out = (ast_expression*)switchnode;
3283 /* parse computed goto sides */
3284 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3285 ast_expression *on_true;
3286 ast_expression *on_false;
3287 ast_expression *cond;
3292 if (ast_istype(*side, ast_ternary)) {
3293 ast_ternary *tern = (ast_ternary*)*side;
3294 on_true = parse_goto_computed(parser, &tern->on_true);
3295 on_false = parse_goto_computed(parser, &tern->on_false);
3297 if (!on_true || !on_false) {
3298 parseerror(parser, "expected label or expression in ternary");
3299 if (on_true) ast_unref(on_true);
3300 if (on_false) ast_unref(on_false);
3308 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3309 } else if (ast_istype(*side, ast_label)) {
3310 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3311 ast_goto_set_label(gt, ((ast_label*)*side));
3313 return (ast_expression*)gt;
3318 static bool parse_goto(parser_t *parser, ast_expression **out)
3320 ast_goto *gt = NULL;
3321 ast_expression *lbl;
3323 if (!parser_next(parser))
3326 if (parser->tok != TOKEN_IDENT) {
3327 ast_expression *expression;
3329 /* could be an expression i.e computed goto :-) */
3330 if (parser->tok != '(') {
3331 parseerror(parser, "expected label name after `goto`");
3335 /* failed to parse expression for goto */
3336 if (!(expression = parse_expression(parser, false, true)) ||
3337 !(*out = parse_goto_computed(parser, &expression))) {
3338 parseerror(parser, "invalid goto expression");
3340 ast_unref(expression);
3347 /* not computed goto */
3348 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3349 lbl = parser_find_label(parser, gt->name);
3351 if (!ast_istype(lbl, ast_label)) {
3352 parseerror(parser, "internal error: label is not an ast_label");
3356 ast_goto_set_label(gt, (ast_label*)lbl);
3359 vec_push(parser->gotos, gt);
3361 if (!parser_next(parser) || parser->tok != ';') {
3362 parseerror(parser, "semicolon expected after goto label");
3365 if (!parser_next(parser)) {
3366 parseerror(parser, "parse error after goto");
3370 *out = (ast_expression*)gt;
3374 static bool parse_skipwhite(parser_t *parser)
3377 if (!parser_next(parser))
3379 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3380 return parser->tok < TOKEN_ERROR;
3383 static bool parse_eol(parser_t *parser)
3385 if (!parse_skipwhite(parser))
3387 return parser->tok == TOKEN_EOL;
3390 static bool parse_pragma_do(parser_t *parser)
3392 if (!parser_next(parser) ||
3393 parser->tok != TOKEN_IDENT ||
3394 strcmp(parser_tokval(parser), "pragma"))
3396 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3399 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3400 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3404 if (!strcmp(parser_tokval(parser), "noref")) {
3405 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3406 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3409 parser->noref = !!parser_token(parser)->constval.i;
3410 if (!parse_eol(parser)) {
3411 parseerror(parser, "parse error after `noref` pragma");
3417 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3420 while (!parse_eol(parser)) {
3421 parser_next(parser);
3430 static bool parse_pragma(parser_t *parser)
3433 parser->lex->flags.preprocessing = true;
3434 parser->lex->flags.mergelines = true;
3435 rv = parse_pragma_do(parser);
3436 if (parser->tok != TOKEN_EOL) {
3437 parseerror(parser, "junk after pragma");
3440 parser->lex->flags.preprocessing = false;
3441 parser->lex->flags.mergelines = false;
3442 if (!parser_next(parser)) {
3443 parseerror(parser, "parse error after pragma");
3449 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3451 bool noref, is_static;
3453 uint32_t qflags = 0;
3454 ast_value *typevar = NULL;
3455 char *vstring = NULL;
3459 if (parser->tok == TOKEN_IDENT)
3460 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3462 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.' || parser->tok == TOKEN_DOTS)
3464 /* local variable */
3466 parseerror(parser, "cannot declare a variable from here");
3469 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3470 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3473 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3477 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3479 if (cvq == CV_WRONG)
3481 return parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, vstring);
3483 else if (parser->tok == TOKEN_KEYWORD)
3485 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3490 if (!parser_next(parser)) {
3491 parseerror(parser, "parse error after __builtin_debug_printtype");
3495 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3497 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3498 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3499 if (!parser_next(parser)) {
3500 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3506 if (!parse_statement(parser, block, out, allow_cases))
3509 con_out("__builtin_debug_printtype: got no output node\n");
3512 ast_type_to_string(*out, ty, sizeof(ty));
3513 con_out("__builtin_debug_printtype: `%s`\n", ty);
3518 else if (!strcmp(parser_tokval(parser), "return"))
3520 return parse_return(parser, block, out);
3522 else if (!strcmp(parser_tokval(parser), "if"))
3524 return parse_if(parser, block, out);
3526 else if (!strcmp(parser_tokval(parser), "while"))
3528 return parse_while(parser, block, out);
3530 else if (!strcmp(parser_tokval(parser), "do"))
3532 return parse_dowhile(parser, block, out);
3534 else if (!strcmp(parser_tokval(parser), "for"))
3536 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3537 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3540 return parse_for(parser, block, out);
3542 else if (!strcmp(parser_tokval(parser), "break"))
3544 return parse_break_continue(parser, block, out, false);
3546 else if (!strcmp(parser_tokval(parser), "continue"))
3548 return parse_break_continue(parser, block, out, true);
3550 else if (!strcmp(parser_tokval(parser), "switch"))
3552 return parse_switch(parser, block, out);
3554 else if (!strcmp(parser_tokval(parser), "case") ||
3555 !strcmp(parser_tokval(parser), "default"))
3558 parseerror(parser, "unexpected 'case' label");
3563 else if (!strcmp(parser_tokval(parser), "goto"))
3565 return parse_goto(parser, out);
3567 else if (!strcmp(parser_tokval(parser), "typedef"))
3569 if (!parser_next(parser)) {
3570 parseerror(parser, "expected type definition after 'typedef'");
3573 return parse_typedef(parser);
3575 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3578 else if (parser->tok == '{')
3581 inner = parse_block(parser);
3584 *out = (ast_expression*)inner;
3587 else if (parser->tok == ':')
3591 if (!parser_next(parser)) {
3592 parseerror(parser, "expected label name");
3595 if (parser->tok != TOKEN_IDENT) {
3596 parseerror(parser, "label must be an identifier");
3599 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3601 if (!label->undefined) {
3602 parseerror(parser, "label `%s` already defined", label->name);
3605 label->undefined = false;
3608 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3609 vec_push(parser->labels, label);
3611 *out = (ast_expression*)label;
3612 if (!parser_next(parser)) {
3613 parseerror(parser, "parse error after label");
3616 for (i = 0; i < vec_size(parser->gotos); ++i) {
3617 if (!strcmp(parser->gotos[i]->name, label->name)) {
3618 ast_goto_set_label(parser->gotos[i], label);
3619 vec_remove(parser->gotos, i, 1);
3625 else if (parser->tok == ';')
3627 if (!parser_next(parser)) {
3628 parseerror(parser, "parse error after empty statement");
3635 lex_ctx_t ctx = parser_ctx(parser);
3636 ast_expression *exp = parse_expression(parser, false, false);
3640 if (!ast_side_effects(exp)) {
3641 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3648 static bool parse_enum(parser_t *parser)
3651 bool reverse = false;
3653 ast_value **values = NULL;
3654 ast_value *var = NULL;
3657 ast_expression *old;
3659 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3660 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3664 /* enumeration attributes (can add more later) */
3665 if (parser->tok == ':') {
3666 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3667 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3672 if (!strcmp(parser_tokval(parser), "flag")) {
3676 else if (!strcmp(parser_tokval(parser), "reverse")) {
3680 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3684 if (!parser_next(parser) || parser->tok != '{') {
3685 parseerror(parser, "expected `{` after enum attribute ");
3691 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3692 if (parser->tok == '}') {
3693 /* allow an empty enum */
3696 parseerror(parser, "expected identifier or `}`");
3700 old = parser_find_field(parser, parser_tokval(parser));
3702 old = parser_find_global(parser, parser_tokval(parser));
3704 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3705 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3709 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3710 vec_push(values, var);
3711 var->cvq = CV_CONST;
3712 var->hasvalue = true;
3714 /* for flagged enumerations increment in POTs of TWO */
3715 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3716 parser_addglobal(parser, var->name, (ast_expression*)var);
3718 if (!parser_next(parser)) {
3719 parseerror(parser, "expected `=`, `}` or comma after identifier");
3723 if (parser->tok == ',')
3725 if (parser->tok == '}')
3727 if (parser->tok != '=') {
3728 parseerror(parser, "expected `=`, `}` or comma after identifier");
3732 if (!parser_next(parser)) {
3733 parseerror(parser, "expected expression after `=`");
3737 /* We got a value! */
3738 old = parse_expression_leave(parser, true, false, false);
3739 asvalue = (ast_value*)old;
3740 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3741 compile_error(ast_ctx(var), "constant value or expression expected");
3744 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3746 if (parser->tok == '}')
3748 if (parser->tok != ',') {
3749 parseerror(parser, "expected `}` or comma after expression");
3754 /* patch them all (for reversed attribute) */
3757 for (i = 0; i < vec_size(values); i++)
3758 values[i]->constval.vfloat = vec_size(values) - i - 1;
3761 if (parser->tok != '}') {
3762 parseerror(parser, "internal error: breaking without `}`");
3766 if (!parser_next(parser) || parser->tok != ';') {
3767 parseerror(parser, "expected semicolon after enumeration");
3771 if (!parser_next(parser)) {
3772 parseerror(parser, "parse error after enumeration");
3784 static bool parse_block_into(parser_t *parser, ast_block *block)
3788 parser_enterblock(parser);
3790 if (!parser_next(parser)) { /* skip the '{' */
3791 parseerror(parser, "expected function body");
3795 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3797 ast_expression *expr = NULL;
3798 if (parser->tok == '}')
3801 if (!parse_statement(parser, block, &expr, false)) {
3802 /* parseerror(parser, "parse error"); */
3808 if (!ast_block_add_expr(block, expr)) {
3815 if (parser->tok != '}') {
3818 (void)parser_next(parser);
3822 if (!parser_leaveblock(parser))
3824 return retval && !!block;
3827 static ast_block* parse_block(parser_t *parser)
3830 block = ast_block_new(parser_ctx(parser));
3833 if (!parse_block_into(parser, block)) {
3834 ast_block_delete(block);
3840 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3842 if (parser->tok == '{') {
3843 *out = (ast_expression*)parse_block(parser);
3846 return parse_statement(parser, NULL, out, false);
3849 static bool create_vector_members(ast_value *var, ast_member **me)
3852 size_t len = strlen(var->name);
3854 for (i = 0; i < 3; ++i) {
3855 char *name = (char*)mem_a(len+3);
3856 memcpy(name, var->name, len);
3858 name[len+1] = 'x'+i;
3860 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3869 do { ast_member_delete(me[--i]); } while(i);
3873 static bool parse_function_body(parser_t *parser, ast_value *var)
3875 ast_block *block = NULL;
3880 ast_expression *framenum = NULL;
3881 ast_expression *nextthink = NULL;
3882 /* None of the following have to be deleted */
3883 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3884 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3885 bool has_frame_think;
3889 has_frame_think = false;
3890 old = parser->function;
3892 if (var->expression.flags & AST_FLAG_ALIAS) {
3893 parseerror(parser, "function aliases cannot have bodies");
3897 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3898 parseerror(parser, "gotos/labels leaking");
3902 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
3903 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3904 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
3910 if (parser->tok == '[') {
3911 /* got a frame definition: [ framenum, nextthink ]
3912 * this translates to:
3913 * self.frame = framenum;
3914 * self.nextthink = time + 0.1;
3915 * self.think = nextthink;
3919 fld_think = parser_find_field(parser, "think");
3920 fld_nextthink = parser_find_field(parser, "nextthink");
3921 fld_frame = parser_find_field(parser, "frame");
3922 if (!fld_think || !fld_nextthink || !fld_frame) {
3923 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3924 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3927 gbl_time = parser_find_global(parser, "time");
3928 gbl_self = parser_find_global(parser, "self");
3929 if (!gbl_time || !gbl_self) {
3930 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3931 parseerror(parser, "please declare the following globals: `time`, `self`");
3935 if (!parser_next(parser))
3938 framenum = parse_expression_leave(parser, true, false, false);
3940 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3943 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3944 ast_unref(framenum);
3945 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3949 if (parser->tok != ',') {
3950 ast_unref(framenum);
3951 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3952 parseerror(parser, "Got a %i\n", parser->tok);
3956 if (!parser_next(parser)) {
3957 ast_unref(framenum);
3961 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3963 /* qc allows the use of not-yet-declared functions here
3964 * - this automatically creates a prototype */
3965 ast_value *thinkfunc;
3966 ast_expression *functype = fld_think->next;
3968 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
3969 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
3970 ast_unref(framenum);
3971 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3974 ast_type_adopt(thinkfunc, functype);
3976 if (!parser_next(parser)) {
3977 ast_unref(framenum);
3978 ast_delete(thinkfunc);
3982 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3984 nextthink = (ast_expression*)thinkfunc;
3987 nextthink = parse_expression_leave(parser, true, false, false);
3989 ast_unref(framenum);
3990 parseerror(parser, "expected a think-function in [frame,think] notation");
3995 if (!ast_istype(nextthink, ast_value)) {
3996 parseerror(parser, "think-function in [frame,think] notation must be a constant");
4000 if (retval && parser->tok != ']') {
4001 parseerror(parser, "expected closing `]` for [frame,think] notation");
4005 if (retval && !parser_next(parser)) {
4009 if (retval && parser->tok != '{') {
4010 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
4015 ast_unref(nextthink);
4016 ast_unref(framenum);
4020 has_frame_think = true;
4023 block = ast_block_new(parser_ctx(parser));
4025 parseerror(parser, "failed to allocate block");
4026 if (has_frame_think) {
4027 ast_unref(nextthink);
4028 ast_unref(framenum);
4033 if (has_frame_think) {
4034 if (!OPTS_FLAG(EMULATE_STATE)) {
4035 ast_state *state_op = ast_state_new(parser_ctx(parser), framenum, nextthink);
4036 if (!ast_block_add_expr(block, (ast_expression*)state_op)) {
4037 parseerror(parser, "failed to generate state op for [frame,think]");
4038 ast_unref(nextthink);
4039 ast_unref(framenum);
4044 /* emulate OP_STATE in code: */
4046 ast_expression *self_frame;
4047 ast_expression *self_nextthink;
4048 ast_expression *self_think;
4049 ast_expression *time_plus_1;
4050 ast_store *store_frame;
4051 ast_store *store_nextthink;
4052 ast_store *store_think;
4054 float frame_delta = 1.0f / (float)OPTS_OPTION_U32(OPTION_STATE_FPS);
4056 ctx = parser_ctx(parser);
4057 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
4058 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
4059 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
4061 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
4062 gbl_time, (ast_expression*)fold_constgen_float(parser->fold, frame_delta, false));
4064 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
4065 if (self_frame) ast_delete(self_frame);
4066 if (self_nextthink) ast_delete(self_nextthink);
4067 if (self_think) ast_delete(self_think);
4068 if (time_plus_1) ast_delete(time_plus_1);
4074 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
4075 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
4076 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
4079 ast_delete(self_frame);
4082 if (!store_nextthink) {
4083 ast_delete(self_nextthink);
4087 ast_delete(self_think);
4091 if (store_frame) ast_delete(store_frame);
4092 if (store_nextthink) ast_delete(store_nextthink);
4093 if (store_think) ast_delete(store_think);
4096 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
4097 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
4098 !ast_block_add_expr(block, (ast_expression*)store_think))
4105 parseerror(parser, "failed to generate code for [frame,think]");
4106 ast_unref(nextthink);
4107 ast_unref(framenum);
4114 if (var->hasvalue) {
4115 if (!(var->expression.flags & AST_FLAG_ACCUMULATE)) {
4116 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
4117 ast_block_delete(block);
4120 func = var->constval.vfunc;
4123 parseerror(parser, "internal error: NULL function: `%s`", var->name);
4124 ast_block_delete(block);
4128 func = ast_function_new(ast_ctx(var), var->name, var);
4131 parseerror(parser, "failed to allocate function for `%s`", var->name);
4132 ast_block_delete(block);
4135 vec_push(parser->functions, func);
4138 parser_enterblock(parser);
4140 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
4142 ast_value *param = var->expression.params[parami];
4145 if (param->expression.vtype != TYPE_VECTOR &&
4146 (param->expression.vtype != TYPE_FIELD ||
4147 param->expression.next->vtype != TYPE_VECTOR))
4152 if (!create_vector_members(param, me)) {
4153 ast_block_delete(block);
4157 for (e = 0; e < 3; ++e) {
4158 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4159 ast_block_collect(block, (ast_expression*)me[e]);
4163 if (var->argcounter && !func->argc) {
4164 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4165 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4169 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC && !func->varargs) {
4171 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4172 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4173 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4174 varargs->expression.count = 0;
4175 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4176 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4177 ast_delete(varargs);
4178 ast_block_delete(block);
4181 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4182 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4183 ast_delete(varargs);
4184 ast_block_delete(block);
4187 func->varargs = varargs;
4188 func->fixedparams = (ast_value*)fold_constgen_float(parser->fold, vec_size(var->expression.params), false);
4191 parser->function = func;
4192 if (!parse_block_into(parser, block)) {
4193 ast_block_delete(block);
4197 vec_push(func->blocks, block);
4199 parser->function = old;
4200 if (!parser_leaveblock(parser))
4202 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4203 parseerror(parser, "internal error: local scopes left");
4207 if (parser->tok == ';')
4208 return parser_next(parser);
4209 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4210 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4214 (void)!parser_leaveblock(parser);
4215 vec_pop(parser->functions);
4216 ast_function_delete(func);
4217 var->constval.vfunc = NULL;
4220 parser->function = old;
4224 static ast_expression *array_accessor_split(
4229 ast_expression *left,
4230 ast_expression *right
4236 lex_ctx_t ctx = ast_ctx(array);
4238 if (!left || !right) {
4239 if (left) ast_delete(left);
4240 if (right) ast_delete(right);
4244 cmp = ast_binary_new(ctx, INSTR_LT,
4245 (ast_expression*)index,
4246 (ast_expression*)fold_constgen_float(parser->fold, middle, false));
4250 parseerror(parser, "internal error: failed to create comparison for array setter");
4254 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4256 ast_delete(cmp); /* will delete left and right */
4257 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4261 return (ast_expression*)ifthen;
4264 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4266 lex_ctx_t ctx = ast_ctx(array);
4268 if (from+1 == afterend) {
4269 /* set this value */
4272 ast_array_index *subscript;
4274 int assignop = type_store_instr[value->expression.vtype];
4276 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4277 assignop = INSTR_STORE_V;
4279 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from, false));
4283 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4285 ast_delete(subscript);
4289 block = ast_block_new(ctx);
4295 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4300 ret = ast_return_new(ctx, NULL);
4306 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4311 return (ast_expression*)block;
4313 ast_expression *left, *right;
4314 size_t diff = afterend - from;
4315 size_t middle = from + diff/2;
4316 left = array_setter_node(parser, array, index, value, from, middle);
4317 right = array_setter_node(parser, array, index, value, middle, afterend);
4318 return array_accessor_split(parser, array, index, middle, left, right);
4322 static ast_expression *array_field_setter_node(
4331 lex_ctx_t ctx = ast_ctx(array);
4333 if (from+1 == afterend) {
4334 /* set this value */
4337 ast_entfield *entfield;
4338 ast_array_index *subscript;
4340 int assignop = type_storep_instr[value->expression.vtype];
4342 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4343 assignop = INSTR_STOREP_V;
4345 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from, false));
4349 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4350 subscript->expression.vtype = TYPE_FIELD;
4352 entfield = ast_entfield_new_force(ctx,
4353 (ast_expression*)entity,
4354 (ast_expression*)subscript,
4355 (ast_expression*)subscript);
4357 ast_delete(subscript);
4361 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4363 ast_delete(entfield);
4367 block = ast_block_new(ctx);
4373 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4378 ret = ast_return_new(ctx, NULL);
4384 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4389 return (ast_expression*)block;
4391 ast_expression *left, *right;
4392 size_t diff = afterend - from;
4393 size_t middle = from + diff/2;
4394 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4395 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4396 return array_accessor_split(parser, array, index, middle, left, right);
4400 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4402 lex_ctx_t ctx = ast_ctx(array);
4404 if (from+1 == afterend) {
4406 ast_array_index *subscript;
4408 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from, false));
4412 ret = ast_return_new(ctx, (ast_expression*)subscript);
4414 ast_delete(subscript);
4418 return (ast_expression*)ret;
4420 ast_expression *left, *right;
4421 size_t diff = afterend - from;
4422 size_t middle = from + diff/2;
4423 left = array_getter_node(parser, array, index, from, middle);
4424 right = array_getter_node(parser, array, index, middle, afterend);
4425 return array_accessor_split(parser, array, index, middle, left, right);
4429 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4431 ast_function *func = NULL;
4432 ast_value *fval = NULL;
4433 ast_block *body = NULL;
4435 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4437 parseerror(parser, "failed to create accessor function value");
4440 fval->expression.flags &= ~(AST_FLAG_COVERAGE_MASK);
4442 func = ast_function_new(ast_ctx(array), funcname, fval);
4445 parseerror(parser, "failed to create accessor function node");
4449 body = ast_block_new(ast_ctx(array));
4451 parseerror(parser, "failed to create block for array accessor");
4457 vec_push(func->blocks, body);
4460 vec_push(parser->accessors, fval);
4465 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4467 ast_value *index = NULL;
4468 ast_value *value = NULL;
4472 if (!ast_istype(array->expression.next, ast_value)) {
4473 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4477 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4479 func = fval->constval.vfunc;
4480 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4482 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4483 value = ast_value_copy((ast_value*)array->expression.next);
4485 if (!index || !value) {
4486 parseerror(parser, "failed to create locals for array accessor");
4489 (void)!ast_value_set_name(value, "value"); /* not important */
4490 vec_push(fval->expression.params, index);
4491 vec_push(fval->expression.params, value);
4493 array->setter = fval;
4496 if (index) ast_delete(index);
4497 if (value) ast_delete(value);
4503 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4505 ast_expression *root = NULL;
4506 root = array_setter_node(parser, array,
4507 array->setter->expression.params[0],
4508 array->setter->expression.params[1],
4509 0, array->expression.count);
4511 parseerror(parser, "failed to build accessor search tree");
4514 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4521 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4523 if (!parser_create_array_setter_proto(parser, array, funcname))
4525 return parser_create_array_setter_impl(parser, array);
4528 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4530 ast_expression *root = NULL;
4531 ast_value *entity = NULL;
4532 ast_value *index = NULL;
4533 ast_value *value = NULL;
4537 if (!ast_istype(array->expression.next, ast_value)) {
4538 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4542 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4544 func = fval->constval.vfunc;
4545 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4547 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4548 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4549 value = ast_value_copy((ast_value*)array->expression.next);
4550 if (!entity || !index || !value) {
4551 parseerror(parser, "failed to create locals for array accessor");
4554 (void)!ast_value_set_name(value, "value"); /* not important */
4555 vec_push(fval->expression.params, entity);
4556 vec_push(fval->expression.params, index);
4557 vec_push(fval->expression.params, value);
4559 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4561 parseerror(parser, "failed to build accessor search tree");
4565 array->setter = fval;
4566 return ast_block_add_expr(func->blocks[0], root);
4568 if (entity) ast_delete(entity);
4569 if (index) ast_delete(index);
4570 if (value) ast_delete(value);
4571 if (root) ast_delete(root);
4577 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4579 ast_value *index = NULL;
4583 /* NOTE: checking array->expression.next rather than elemtype since
4584 * for fields elemtype is a temporary fieldtype.
4586 if (!ast_istype(array->expression.next, ast_value)) {
4587 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4591 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4593 func = fval->constval.vfunc;
4594 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4596 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4599 parseerror(parser, "failed to create locals for array accessor");
4602 vec_push(fval->expression.params, index);
4604 array->getter = fval;
4607 if (index) ast_delete(index);
4613 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4615 ast_expression *root = NULL;
4617 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4619 parseerror(parser, "failed to build accessor search tree");
4622 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4629 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4631 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4633 return parser_create_array_getter_impl(parser, array);
4636 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4644 bool variadic = false;
4645 ast_value *varparam = NULL;
4646 char *argcounter = NULL;
4648 ctx = parser_ctx(parser);
4650 /* for the sake of less code we parse-in in this function */
4651 if (!parser_next(parser)) {
4653 parseerror(parser, "expected parameter list");
4659 /* parse variables until we hit a closing paren */
4660 while (parser->tok != ')') {
4661 bool is_varargs = false;
4664 /* there must be commas between them */
4665 if (parser->tok != ',') {
4666 parseerror(parser, "expected comma or end of parameter list");
4669 if (!parser_next(parser)) {
4670 parseerror(parser, "expected parameter");
4676 param = parse_typename(parser, NULL, NULL, &is_varargs);
4677 if (!param && !is_varargs)
4680 /* '...' indicates a varargs function */
4682 if (parser->tok != ')' && parser->tok != TOKEN_IDENT) {
4683 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4686 if (parser->tok == TOKEN_IDENT) {
4687 argcounter = util_strdup(parser_tokval(parser));
4688 if (!parser_next(parser) || parser->tok != ')') {
4689 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4694 vec_push(params, param);
4695 if (param->expression.vtype >= TYPE_VARIANT) {
4696 char tname[1024]; /* typename is reserved in C++ */
4697 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4698 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4701 /* type-restricted varargs */
4702 if (parser->tok == TOKEN_DOTS) {
4704 varparam = vec_last(params);
4706 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4707 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4710 if (parser->tok == TOKEN_IDENT) {
4711 argcounter = util_strdup(parser_tokval(parser));
4712 ast_value_set_name(param, argcounter);
4713 if (!parser_next(parser) || parser->tok != ')') {
4714 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4719 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC && param->name[0] == '<') {
4720 parseerror(parser, "parameter name omitted");
4726 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4730 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4731 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4734 if (!parser_next(parser)) {
4735 parseerror(parser, "parse error after typename");
4739 /* now turn 'var' into a function type */
4740 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4741 fval->expression.next = (ast_expression*)var;
4743 fval->expression.flags |= AST_FLAG_VARIADIC;
4746 var->expression.params = params;
4747 var->expression.varparam = (ast_expression*)varparam;
4748 var->argcounter = argcounter;
4757 ast_delete(varparam);
4759 for (i = 0; i < vec_size(params); ++i)
4760 ast_delete(params[i]);
4765 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4767 ast_expression *cexp;
4768 ast_value *cval, *tmp;
4771 ctx = parser_ctx(parser);
4773 if (!parser_next(parser)) {
4775 parseerror(parser, "expected array-size");
4779 if (parser->tok != ']') {
4780 cexp = parse_expression_leave(parser, true, false, false);
4782 if (!cexp || !ast_istype(cexp, ast_value)) {
4786 parseerror(parser, "expected array-size as constant positive integer");
4789 cval = (ast_value*)cexp;
4796 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4797 tmp->expression.next = (ast_expression*)var;
4801 if (cval->expression.vtype == TYPE_INTEGER)
4802 tmp->expression.count = cval->constval.vint;
4803 else if (cval->expression.vtype == TYPE_FLOAT)
4804 tmp->expression.count = cval->constval.vfloat;
4808 parseerror(parser, "array-size must be a positive integer constant");
4814 var->expression.count = -1;
4815 var->expression.flags |= AST_FLAG_ARRAY_INIT;
4818 if (parser->tok != ']') {
4820 parseerror(parser, "expected ']' after array-size");
4823 if (!parser_next(parser)) {
4825 parseerror(parser, "error after parsing array size");
4831 /* Parse a complete typename.
4832 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4833 * but when parsing variables separated by comma
4834 * 'storebase' should point to where the base-type should be kept.
4835 * The base type makes up every bit of type information which comes *before* the
4838 * NOTE: The value must either be named, have a NULL name, or a name starting
4839 * with '<'. In the first case, this will be the actual variable or type
4840 * name, in the other cases it is assumed that the name will appear
4841 * later, and an error is generated otherwise.
4843 * The following will be parsed in its entirety:
4845 * The 'basetype' in this case is 'void()'
4846 * and if there's a comma after it, say:
4848 * then the type-information 'void()' can be stored in 'storebase'
4850 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef, bool *is_vararg)
4852 ast_value *var, *tmp;
4855 const char *name = NULL;
4856 bool isfield = false;
4857 bool wasarray = false;
4858 size_t morefields = 0;
4860 bool vararg = (parser->tok == TOKEN_DOTS);
4862 ctx = parser_ctx(parser);
4864 /* types may start with a dot */
4865 if (parser->tok == '.' || parser->tok == TOKEN_DOTS) {
4867 if (parser->tok == TOKEN_DOTS)
4869 /* if we parsed a dot we need a typename now */
4870 if (!parser_next(parser)) {
4871 parseerror(parser, "expected typename for field definition");
4875 /* Further dots are handled seperately because they won't be part of the
4879 if (parser->tok == '.')
4881 else if (parser->tok == TOKEN_DOTS)
4886 if (!parser_next(parser)) {
4887 parseerror(parser, "expected typename for field definition");
4892 if (parser->tok == TOKEN_IDENT)
4893 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4894 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4895 if (vararg && is_vararg) {
4899 parseerror(parser, "expected typename");
4903 /* generate the basic type value */
4904 if (cached_typedef) {
4905 var = ast_value_copy(cached_typedef);
4906 ast_value_set_name(var, "<type(from_def)>");
4908 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4910 for (; morefields; --morefields) {
4911 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4912 tmp->expression.next = (ast_expression*)var;
4916 /* do not yet turn into a field - remember:
4917 * .void() foo; is a field too
4918 * .void()() foo; is a function
4922 if (!parser_next(parser)) {
4924 parseerror(parser, "parse error after typename");
4928 /* an opening paren now starts the parameter-list of a function
4929 * this is where original-QC has parameter lists.
4930 * We allow a single parameter list here.
4931 * Much like fteqcc we don't allow `float()() x`
4933 if (parser->tok == '(') {
4934 var = parse_parameter_list(parser, var);
4939 /* store the base if requested */
4941 *storebase = ast_value_copy(var);
4943 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4944 tmp->expression.next = (ast_expression*)*storebase;
4949 /* there may be a name now */
4950 if (parser->tok == TOKEN_IDENT || parser->tok == TOKEN_KEYWORD) {
4951 if (!strcmp(parser_tokval(parser), "break"))
4952 (void)!parsewarning(parser, WARN_BREAKDEF, "break definition ignored (suggest removing it)");
4953 else if (parser->tok == TOKEN_KEYWORD)
4956 name = util_strdup(parser_tokval(parser));
4959 if (!parser_next(parser)) {
4962 parseerror(parser, "error after variable or field declaration");
4968 /* now this may be an array */
4969 if (parser->tok == '[') {
4971 var = parse_arraysize(parser, var);
4973 if (name) mem_d(name);
4978 /* This is the point where we can turn it into a field */
4980 /* turn it into a field if desired */
4981 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4982 tmp->expression.next = (ast_expression*)var;
4986 /* now there may be function parens again */
4987 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4988 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4989 if (parser->tok == '(' && wasarray)
4990 parseerror(parser, "arrays as part of a return type is not supported");
4991 while (parser->tok == '(') {
4992 var = parse_parameter_list(parser, var);
4994 if (name) mem_d(name);
4999 /* finally name it */
5001 if (!ast_value_set_name(var, name)) {
5004 parseerror(parser, "internal error: failed to set name");
5007 /* free the name, ast_value_set_name duplicates */
5014 static bool parse_typedef(parser_t *parser)
5016 ast_value *typevar, *oldtype;
5017 ast_expression *old;
5019 typevar = parse_typename(parser, NULL, NULL, NULL);
5024 /* while parsing types, the ast_value's get named '<something>' */
5025 if (!typevar->name || typevar->name[0] == '<') {
5026 parseerror(parser, "missing name in typedef");
5027 ast_delete(typevar);
5031 if ( (old = parser_find_var(parser, typevar->name)) ) {
5032 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
5033 " -> `%s` has been declared here: %s:%i",
5034 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
5035 ast_delete(typevar);
5039 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
5040 parseerror(parser, "type `%s` has already been declared here: %s:%i",
5041 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
5042 ast_delete(typevar);
5046 vec_push(parser->_typedefs, typevar);
5047 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
5049 if (parser->tok != ';') {
5050 parseerror(parser, "expected semicolon after typedef");
5053 if (!parser_next(parser)) {
5054 parseerror(parser, "parse error after typedef");
5061 static const char *cvq_to_str(int cvq) {
5063 case CV_NONE: return "none";
5064 case CV_VAR: return "`var`";
5065 case CV_CONST: return "`const`";
5066 default: return "<INVALID>";
5070 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
5073 if (proto->cvq != var->cvq) {
5074 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
5075 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5076 parser->tok == '='))
5078 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
5079 "`%s` declared with different qualifiers: %s\n"
5080 " -> previous declaration here: %s:%i uses %s",
5081 var->name, cvq_to_str(var->cvq),
5082 ast_ctx(proto).file, ast_ctx(proto).line,
5083 cvq_to_str(proto->cvq));
5086 av = (var ->expression.flags & AST_FLAG_NORETURN);
5087 ao = (proto->expression.flags & AST_FLAG_NORETURN);
5089 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
5090 "`%s` declared with different attributes%s\n"
5091 " -> previous declaration here: %s:%i",
5092 var->name, (av ? ": noreturn" : ""),
5093 ast_ctx(proto).file, ast_ctx(proto).line,
5094 (ao ? ": noreturn" : ""));
5099 static bool create_array_accessors(parser_t *parser, ast_value *var)
5102 util_snprintf(name, sizeof(name), "%s##SET", var->name);
5103 if (!parser_create_array_setter(parser, var, name))
5105 util_snprintf(name, sizeof(name), "%s##GET", var->name);
5106 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5111 static bool parse_array(parser_t *parser, ast_value *array)
5114 if (array->initlist) {
5115 parseerror(parser, "array already initialized elsewhere");
5118 if (!parser_next(parser)) {
5119 parseerror(parser, "parse error in array initializer");
5123 while (parser->tok != '}') {
5124 ast_value *v = (ast_value*)parse_expression_leave(parser, true, false, false);
5127 if (!ast_istype(v, ast_value) || !v->hasvalue || v->cvq != CV_CONST) {
5129 parseerror(parser, "initializing element must be a compile time constant");
5132 vec_push(array->initlist, v->constval);
5133 if (v->expression.vtype == TYPE_STRING) {
5134 array->initlist[i].vstring = util_strdupe(array->initlist[i].vstring);
5138 if (parser->tok == '}')
5140 if (parser->tok != ',' || !parser_next(parser)) {
5141 parseerror(parser, "expected comma or '}' in element list");
5145 if (!parser_next(parser) || parser->tok != ';') {
5146 parseerror(parser, "expected semicolon after initializer, got %s");
5150 if (!parser_next(parser)) {
5151 parseerror(parser, "parse error after initializer");
5156 if (array->expression.flags & AST_FLAG_ARRAY_INIT) {
5157 if (array->expression.count != (size_t)-1) {
5158 parseerror(parser, "array `%s' has already been initialized with %u elements",
5159 array->name, (unsigned)array->expression.count);
5161 array->expression.count = vec_size(array->initlist);
5162 if (!create_array_accessors(parser, array))
5168 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)
5172 ast_expression *old;
5176 ast_value *basetype = NULL;
5178 bool isparam = false;
5179 bool isvector = false;
5180 bool cleanvar = true;
5181 bool wasarray = false;
5183 ast_member *me[3] = { NULL, NULL, NULL };
5184 ast_member *last_me[3] = { NULL, NULL, NULL };
5186 if (!localblock && is_static)
5187 parseerror(parser, "`static` qualifier is not supported in global scope");
5189 /* get the first complete variable */
5190 var = parse_typename(parser, &basetype, cached_typedef, NULL);
5193 ast_delete(basetype);
5197 /* while parsing types, the ast_value's get named '<something>' */
5198 if (!var->name || var->name[0] == '<') {
5199 parseerror(parser, "declaration does not declare anything");
5201 ast_delete(basetype);
5209 /* Part 0: finish the type */
5210 if (parser->tok == '(') {
5211 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5212 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5213 var = parse_parameter_list(parser, var);
5219 /* we only allow 1-dimensional arrays */
5220 if (parser->tok == '[') {
5222 var = parse_arraysize(parser, var);
5228 if (parser->tok == '(' && wasarray) {
5229 parseerror(parser, "arrays as part of a return type is not supported");
5230 /* we'll still parse the type completely for now */
5232 /* for functions returning functions */
5233 while (parser->tok == '(') {
5234 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5235 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5236 var = parse_parameter_list(parser, var);
5243 var->cvq = qualifier;
5244 if (qflags & AST_FLAG_COVERAGE) /* specified in QC, drop our default */
5245 var->expression.flags &= ~(AST_FLAG_COVERAGE_MASK);
5246 var->expression.flags |= qflags;
5249 * store the vstring back to var for alias and
5250 * deprecation messages.
5252 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5253 var->expression.flags & AST_FLAG_ALIAS)
5254 var->desc = vstring;
5256 if (parser_find_global(parser, var->name) && var->expression.flags & AST_FLAG_ALIAS) {
5257 parseerror(parser, "function aliases cannot be forward declared");
5264 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5265 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5266 * is then filled with the previous definition and the parameter-names replaced.
5268 if (!strcmp(var->name, "nil")) {
5269 if (OPTS_FLAG(UNTYPED_NIL)) {
5270 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5271 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5273 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5276 /* Deal with end_sys_ vars */
5278 if (!strcmp(var->name, "end_sys_globals")) {
5280 parser->crc_globals = vec_size(parser->globals);
5283 else if (!strcmp(var->name, "end_sys_fields")) {
5285 parser->crc_fields = vec_size(parser->fields);
5288 if (was_end && var->expression.vtype == TYPE_FIELD) {
5289 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5290 "global '%s' hint should not be a field",
5291 parser_tokval(parser)))
5298 if (!nofields && var->expression.vtype == TYPE_FIELD)
5300 /* deal with field declarations */
5301 old = parser_find_field(parser, var->name);
5303 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5304 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5313 parseerror(parser, "field `%s` already declared here: %s:%i",
5314 var->name, ast_ctx(old).file, ast_ctx(old).line);
5319 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5320 (old = parser_find_global(parser, var->name)))
5322 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5323 parseerror(parser, "field `%s` already declared here: %s:%i",
5324 var->name, ast_ctx(old).file, ast_ctx(old).line);
5331 /* deal with other globals */
5332 old = parser_find_global(parser, var->name);
5333 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5335 /* This is a function which had a prototype */
5336 if (!ast_istype(old, ast_value)) {
5337 parseerror(parser, "internal error: prototype is not an ast_value");
5341 proto = (ast_value*)old;
5342 proto->desc = var->desc;
5343 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5344 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5346 ast_ctx(proto).file, ast_ctx(proto).line);
5350 /* we need the new parameter-names */
5351 for (i = 0; i < vec_size(proto->expression.params); ++i)
5352 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5353 if (!parser_check_qualifiers(parser, var, proto)) {
5360 proto->expression.flags |= var->expression.flags;
5368 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5369 "global `%s` already declared here: %s:%i",
5370 var->name, ast_ctx(old).file, ast_ctx(old).line))
5375 if (old->flags & AST_FLAG_FINAL_DECL) {
5376 parseerror(parser, "cannot redeclare variable `%s`, declared final here: %s:%i",
5377 var->name, ast_ctx(old).file, ast_ctx(old).line);
5381 proto = (ast_value*)old;
5382 if (!ast_istype(old, ast_value)) {
5383 parseerror(parser, "internal error: not an ast_value");
5388 if (!parser_check_qualifiers(parser, var, proto)) {
5393 proto->expression.flags |= var->expression.flags;
5394 /* copy the context for finals,
5395 * so the error can show where it was actually made 'final'
5397 if (proto->expression.flags & AST_FLAG_FINAL_DECL)
5398 ast_ctx(old) = ast_ctx(var);
5402 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5403 (old = parser_find_field(parser, var->name)))
5405 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5406 parseerror(parser, "global `%s` already declared here: %s:%i",
5407 var->name, ast_ctx(old).file, ast_ctx(old).line);
5414 else /* it's not a global */
5416 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5417 if (old && !isparam) {
5418 parseerror(parser, "local `%s` already declared here: %s:%i",
5419 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5423 /* doing this here as the above is just for a single scope */
5424 old = parser_find_local(parser, var->name, 0, &isparam);
5425 if (old && isparam) {
5426 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5427 "local `%s` is shadowing a parameter", var->name))
5429 parseerror(parser, "local `%s` already declared here: %s:%i",
5430 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5434 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5436 if (ast_istype(old, ast_value))
5437 var = proto = (ast_value*)old;
5446 /* in a noref section we simply bump the usecount */
5447 if (noref || parser->noref)
5451 * Create the global/local, and deal with vector types.
5454 if (var->expression.vtype == TYPE_VECTOR)
5456 else if (var->expression.vtype == TYPE_FIELD &&
5457 var->expression.next->vtype == TYPE_VECTOR)
5461 if (!create_vector_members(var, me)) {
5468 /* deal with global variables, fields, functions */
5469 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5470 var->isfield = true;
5471 vec_push(parser->fields, (ast_expression*)var);
5472 util_htset(parser->htfields, var->name, var);
5474 for (i = 0; i < 3; ++i) {
5475 vec_push(parser->fields, (ast_expression*)me[i]);
5476 util_htset(parser->htfields, me[i]->name, me[i]);
5481 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5482 parser_addglobal(parser, var->name, (ast_expression*)var);
5484 for (i = 0; i < 3; ++i) {
5485 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5489 ast_expression *find = parser_find_global(parser, var->desc);
5492 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5496 if (!ast_compare_type((ast_expression*)var, find)) {
5500 ast_type_to_string(find, ty1, sizeof(ty1));
5501 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5503 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5510 * add alias to aliases table and to corrector
5511 * so corrections can apply for aliases as well.
5513 util_htset(parser->aliases, var->name, find);
5516 * add to corrector so corrections can work
5517 * even for aliases too.
5520 vec_last(parser->correct_variables),
5521 &vec_last(parser->correct_variables_score),
5525 /* generate aliases for vector components */
5529 util_asprintf(&buffer[0], "%s_x", var->desc);
5530 util_asprintf(&buffer[1], "%s_y", var->desc);
5531 util_asprintf(&buffer[2], "%s_z", var->desc);
5533 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5534 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5535 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5542 * add to corrector so corrections can work
5543 * even for aliases too.
5546 vec_last(parser->correct_variables),
5547 &vec_last(parser->correct_variables_score),
5551 vec_last(parser->correct_variables),
5552 &vec_last(parser->correct_variables_score),
5556 vec_last(parser->correct_variables),
5557 &vec_last(parser->correct_variables_score),
5565 /* a static adds itself to be generated like any other global
5566 * but is added to the local namespace instead
5568 char *defname = NULL;
5569 size_t prefix_len, ln;
5572 ln = strlen(parser->function->name);
5573 vec_append(defname, ln, parser->function->name);
5575 vec_append(defname, 2, "::");
5576 /* remember the length up to here */
5577 prefix_len = vec_size(defname);
5579 /* Add it to the local scope */
5580 util_htset(vec_last(parser->variables), var->name, (void*)var);
5584 vec_last(parser->correct_variables),
5585 &vec_last(parser->correct_variables_score),
5589 /* now rename the global */
5590 ln = strlen(var->name);
5591 vec_append(defname, ln, var->name);
5592 /* if a variable of that name already existed, add the
5594 * The counter is incremented either way.
5596 sn_size = vec_size(parser->function->static_names);
5597 for (sn = 0; sn != sn_size; ++sn) {
5598 if (strcmp(parser->function->static_names[sn], var->name) == 0)
5601 if (sn != sn_size) {
5603 int len = util_asprintf(&num, "#%u", parser->function->static_count);
5604 vec_append(defname, len, num);
5608 vec_push(parser->function->static_names, util_strdup(var->name));
5609 parser->function->static_count++;
5610 ast_value_set_name(var, defname);
5612 /* push it to the to-be-generated globals */
5613 vec_push(parser->globals, (ast_expression*)var);
5615 /* same game for the vector members */
5617 for (i = 0; i < 3; ++i) {
5618 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5622 vec_last(parser->correct_variables),
5623 &vec_last(parser->correct_variables_score),
5627 vec_shrinkto(defname, prefix_len);
5628 ln = strlen(me[i]->name);
5629 vec_append(defname, ln, me[i]->name);
5630 ast_member_set_name(me[i], defname);
5632 vec_push(parser->globals, (ast_expression*)me[i]);
5637 vec_push(localblock->locals, var);
5638 parser_addlocal(parser, var->name, (ast_expression*)var);
5640 for (i = 0; i < 3; ++i) {
5641 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5642 ast_block_collect(localblock, (ast_expression*)me[i]);
5648 memcpy(last_me, me, sizeof(me));
5649 me[0] = me[1] = me[2] = NULL;
5654 if (var->expression.vtype == TYPE_ARRAY) {
5655 if (var->expression.count != (size_t)-1) {
5656 if (!create_array_accessors(parser, var))
5660 else if (!localblock && !nofields &&
5661 var->expression.vtype == TYPE_FIELD &&
5662 var->expression.next->vtype == TYPE_ARRAY)
5665 ast_expression *telem;
5667 ast_value *array = (ast_value*)var->expression.next;
5669 if (!ast_istype(var->expression.next, ast_value)) {
5670 parseerror(parser, "internal error: field element type must be an ast_value");
5674 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5675 if (!parser_create_array_field_setter(parser, array, name))
5678 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5679 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5680 tfield->expression.next = telem;
5681 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5682 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5690 if (parser->tok == ';') {
5691 ast_delete(basetype);
5692 if (!parser_next(parser)) {
5693 parseerror(parser, "error after variable declaration");
5699 if (parser->tok == ',')
5703 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5706 parseerror(parser, "missing comma or semicolon while parsing variables");
5710 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5711 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5712 "initializing expression turns variable `%s` into a constant in this standard",
5719 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5720 if (parser->tok != '=') {
5721 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5725 if (!parser_next(parser)) {
5726 parseerror(parser, "error parsing initializer");
5730 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5731 parseerror(parser, "expected '=' before function body in this standard");
5734 if (parser->tok == '#') {
5735 ast_function *func = NULL;
5736 ast_value *number = NULL;
5742 parseerror(parser, "cannot declare builtins within functions");
5745 if (var->expression.vtype != TYPE_FUNCTION) {
5746 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5749 if (!parser_next(parser)) {
5750 parseerror(parser, "expected builtin number");
5754 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5755 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5757 parseerror(parser, "builtin number expected");
5760 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5763 parseerror(parser, "builtin number must be a compile time constant");
5766 if (number->expression.vtype == TYPE_INTEGER)
5767 builtin_num = number->constval.vint;
5768 else if (number->expression.vtype == TYPE_FLOAT)
5769 builtin_num = number->constval.vfloat;
5772 parseerror(parser, "builtin number must be an integer constant");
5777 fractional = modff(builtin_num, &integral);
5778 if (builtin_num < 0 || fractional != 0) {
5779 parseerror(parser, "builtin number must be an integer greater than zero");
5783 /* we only want the integral part anyways */
5784 builtin_num = integral;
5785 } else if (parser->tok == TOKEN_INTCONST) {
5786 builtin_num = parser_token(parser)->constval.i;
5788 parseerror(parser, "builtin number must be a compile time constant");
5792 if (var->hasvalue) {
5793 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5794 "builtin `%s` has already been defined\n"
5795 " -> previous declaration here: %s:%i",
5796 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5800 func = ast_function_new(ast_ctx(var), var->name, var);
5802 parseerror(parser, "failed to allocate function for `%s`", var->name);
5805 vec_push(parser->functions, func);
5807 func->builtin = -builtin_num-1;
5810 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5811 ? (parser->tok != ',' && parser->tok != ';')
5812 : (!parser_next(parser)))
5814 parseerror(parser, "expected comma or semicolon");
5816 ast_function_delete(func);
5817 var->constval.vfunc = NULL;
5821 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
5824 /* Note that fteqcc and most others don't even *have*
5825 * local arrays, so this is not a high priority.
5827 parseerror(parser, "TODO: initializers for local arrays");
5831 var->hasvalue = true;
5832 if (!parse_array(parser, var))
5835 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
5838 parseerror(parser, "cannot declare functions within functions");
5843 ast_ctx(proto) = parser_ctx(parser);
5845 if (!parse_function_body(parser, var))
5847 ast_delete(basetype);
5848 for (i = 0; i < vec_size(parser->gotos); ++i)
5849 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5850 vec_free(parser->gotos);
5851 vec_free(parser->labels);
5854 ast_expression *cexp;
5856 bool folded_const = false;
5858 cexp = parse_expression_leave(parser, true, false, false);
5861 cval = ast_istype(cexp, ast_value) ? (ast_value*)cexp : NULL;
5863 /* deal with foldable constants: */
5865 var->cvq == CV_CONST && cval && cval->hasvalue && cval->cvq == CV_CONST && !cval->isfield)
5867 /* remove it from the current locals */
5869 for (i = 0; i < 3; ++i) {
5870 vec_pop(parser->_locals);
5871 vec_pop(localblock->collect);
5874 /* do sanity checking, this function really needs refactoring */
5875 if (vec_last(parser->_locals) != (ast_expression*)var)
5876 parseerror(parser, "internal error: unexpected change in local variable handling");
5878 vec_pop(parser->_locals);
5879 if (vec_last(localblock->locals) != var)
5880 parseerror(parser, "internal error: unexpected change in local variable handling (2)");
5882 vec_pop(localblock->locals);
5883 /* push it to the to-be-generated globals */
5884 vec_push(parser->globals, (ast_expression*)var);
5886 for (i = 0; i < 3; ++i)
5887 vec_push(parser->globals, (ast_expression*)last_me[i]);
5888 folded_const = true;
5891 if (folded_const || !localblock || is_static) {
5892 if (cval != parser->nil &&
5893 (!cval || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5896 parseerror(parser, "initializer is non constant");
5901 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5902 qualifier != CV_VAR)
5904 var->cvq = CV_CONST;
5906 if (cval == parser->nil)
5907 var->expression.flags |= AST_FLAG_INITIALIZED;
5910 var->hasvalue = true;
5911 if (cval->expression.vtype == TYPE_STRING)
5912 var->constval.vstring = parser_strdup(cval->constval.vstring);
5913 else if (cval->expression.vtype == TYPE_FIELD)
5914 var->constval.vfield = cval;
5916 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5922 shunt sy = { NULL, NULL, NULL, NULL };
5925 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5926 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5927 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5928 if (!parser_sy_apply_operator(parser, &sy))
5931 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5932 parseerror(parser, "internal error: leaked operands");
5933 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5941 /* a constant initialized to an inexact value should be marked inexact:
5942 * const float x = <inexact>; should propagate the inexact flag
5944 if (var->cvq == CV_CONST && var->expression.vtype == TYPE_FLOAT) {
5945 if (cval && cval->hasvalue && cval->cvq == CV_CONST)
5946 var->inexact = cval->inexact;
5951 if (parser->tok == ',') {
5952 if (!parser_next(parser)) {
5953 parseerror(parser, "expected another variable");
5957 if (parser->tok != TOKEN_IDENT) {
5958 parseerror(parser, "expected another variable");
5961 var = ast_value_copy(basetype);
5963 ast_value_set_name(var, parser_tokval(parser));
5964 if (!parser_next(parser)) {
5965 parseerror(parser, "error parsing variable declaration");
5971 if (parser->tok != ';') {
5972 parseerror(parser, "missing semicolon after variables");
5976 if (!parser_next(parser)) {
5977 parseerror(parser, "parse error after variable declaration");
5981 ast_delete(basetype);
5985 if (cleanvar && var)
5987 ast_delete(basetype);
5991 ast_delete(basetype);
5992 if (cleanvar && var)
5994 if (me[0]) ast_member_delete(me[0]);
5995 if (me[1]) ast_member_delete(me[1]);
5996 if (me[2]) ast_member_delete(me[2]);
6000 static bool parser_global_statement(parser_t *parser)
6004 bool is_static = false;
6005 uint32_t qflags = 0;
6006 ast_value *istype = NULL;
6007 char *vstring = NULL;
6009 if (parser->tok == TOKEN_IDENT)
6010 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
6012 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.' || parser->tok == TOKEN_DOTS)
6014 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
6016 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
6018 if (cvq == CV_WRONG)
6020 return parse_variable(parser, NULL, false, cvq, NULL, noref, is_static, qflags, vstring);
6022 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
6024 return parse_enum(parser);
6026 else if (parser->tok == TOKEN_KEYWORD)
6028 if (!strcmp(parser_tokval(parser), "typedef")) {
6029 if (!parser_next(parser)) {
6030 parseerror(parser, "expected type definition after 'typedef'");
6033 return parse_typedef(parser);
6035 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
6038 else if (parser->tok == '#')
6040 return parse_pragma(parser);
6042 else if (parser->tok == '$')
6044 if (!parser_next(parser)) {
6045 parseerror(parser, "parse error");
6051 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
6057 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
6059 return util_crc16(old, str, strlen(str));
6062 static void progdefs_crc_file(const char *str)
6064 /* write to progdefs.h here */
6068 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
6070 old = progdefs_crc_sum(old, str);
6071 progdefs_crc_file(str);
6075 static void generate_checksum(parser_t *parser, ir_builder *ir)
6077 uint16_t crc = 0xFFFF;
6081 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
6082 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
6084 progdefs_crc_file("\tint\tpad;\n");
6085 progdefs_crc_file("\tint\tofs_return[3];\n");
6086 progdefs_crc_file("\tint\tofs_parm0[3];\n");
6087 progdefs_crc_file("\tint\tofs_parm1[3];\n");
6088 progdefs_crc_file("\tint\tofs_parm2[3];\n");
6089 progdefs_crc_file("\tint\tofs_parm3[3];\n");
6090 progdefs_crc_file("\tint\tofs_parm4[3];\n");
6091 progdefs_crc_file("\tint\tofs_parm5[3];\n");
6092 progdefs_crc_file("\tint\tofs_parm6[3];\n");
6093 progdefs_crc_file("\tint\tofs_parm7[3];\n");
6095 for (i = 0; i < parser->crc_globals; ++i) {
6096 if (!ast_istype(parser->globals[i], ast_value))
6098 value = (ast_value*)(parser->globals[i]);
6099 switch (value->expression.vtype) {
6100 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6101 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6102 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6103 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6105 crc = progdefs_crc_both(crc, "\tint\t");
6108 crc = progdefs_crc_both(crc, value->name);
6109 crc = progdefs_crc_both(crc, ";\n");
6111 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
6112 for (i = 0; i < parser->crc_fields; ++i) {
6113 if (!ast_istype(parser->fields[i], ast_value))
6115 value = (ast_value*)(parser->fields[i]);
6116 switch (value->expression.next->vtype) {
6117 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6118 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6119 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6120 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6122 crc = progdefs_crc_both(crc, "\tint\t");
6125 crc = progdefs_crc_both(crc, value->name);
6126 crc = progdefs_crc_both(crc, ";\n");
6128 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
6129 ir->code->crc = crc;
6132 parser_t *parser_create()
6135 lex_ctx_t empty_ctx;
6138 parser = (parser_t*)mem_a(sizeof(parser_t));
6142 memset(parser, 0, sizeof(*parser));
6144 for (i = 0; i < operator_count; ++i) {
6145 if (operators[i].id == opid1('=')) {
6146 parser->assign_op = operators+i;
6150 if (!parser->assign_op) {
6151 con_err("internal error: initializing parser: failed to find assign operator\n");
6156 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
6157 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
6158 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
6159 vec_push(parser->_blocktypedefs, 0);
6161 parser->aliases = util_htnew(PARSER_HT_SIZE);
6164 vec_push(parser->correct_variables, correct_trie_new());
6165 vec_push(parser->correct_variables_score, NULL);
6167 empty_ctx.file = "<internal>";
6169 empty_ctx.column = 0;
6170 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
6171 parser->nil->cvq = CV_CONST;
6172 if (OPTS_FLAG(UNTYPED_NIL))
6173 util_htset(parser->htglobals, "nil", (void*)parser->nil);
6175 parser->max_param_count = 1;
6177 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
6178 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
6179 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
6181 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
6182 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
6183 parser->reserved_version->cvq = CV_CONST;
6184 parser->reserved_version->hasvalue = true;
6185 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
6186 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
6188 parser->reserved_version = NULL;
6191 parser->fold = fold_init (parser);
6192 parser->intrin = intrin_init(parser);
6196 static bool parser_compile(parser_t *parser)
6198 /* initial lexer/parser state */
6199 parser->lex->flags.noops = true;
6201 if (parser_next(parser))
6203 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
6205 if (!parser_global_statement(parser)) {
6206 if (parser->tok == TOKEN_EOF)
6207 parseerror(parser, "unexpected end of file");
6208 else if (compile_errors)
6209 parseerror(parser, "there have been errors, bailing out");
6210 lex_close(parser->lex);
6216 parseerror(parser, "parse error");
6217 lex_close(parser->lex);
6222 lex_close(parser->lex);
6225 return !compile_errors;
6228 bool parser_compile_file(parser_t *parser, const char *filename)
6230 parser->lex = lex_open(filename);
6232 con_err("failed to open file \"%s\"\n", filename);
6235 return parser_compile(parser);
6238 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
6240 parser->lex = lex_open_string(str, len, name);
6242 con_err("failed to create lexer for string \"%s\"\n", name);
6245 return parser_compile(parser);
6248 static void parser_remove_ast(parser_t *parser)
6251 if (parser->ast_cleaned)
6253 parser->ast_cleaned = true;
6254 for (i = 0; i < vec_size(parser->accessors); ++i) {
6255 ast_delete(parser->accessors[i]->constval.vfunc);
6256 parser->accessors[i]->constval.vfunc = NULL;
6257 ast_delete(parser->accessors[i]);
6259 for (i = 0; i < vec_size(parser->functions); ++i) {
6260 ast_delete(parser->functions[i]);
6262 for (i = 0; i < vec_size(parser->fields); ++i) {
6263 ast_delete(parser->fields[i]);
6265 for (i = 0; i < vec_size(parser->globals); ++i) {
6266 ast_delete(parser->globals[i]);
6268 vec_free(parser->accessors);
6269 vec_free(parser->functions);
6270 vec_free(parser->globals);
6271 vec_free(parser->fields);
6273 for (i = 0; i < vec_size(parser->variables); ++i)
6274 util_htdel(parser->variables[i]);
6275 vec_free(parser->variables);
6276 vec_free(parser->_blocklocals);
6277 vec_free(parser->_locals);
6280 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
6281 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
6283 vec_free(parser->correct_variables);
6284 vec_free(parser->correct_variables_score);
6286 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6287 ast_delete(parser->_typedefs[i]);
6288 vec_free(parser->_typedefs);
6289 for (i = 0; i < vec_size(parser->typedefs); ++i)
6290 util_htdel(parser->typedefs[i]);
6291 vec_free(parser->typedefs);
6292 vec_free(parser->_blocktypedefs);
6294 vec_free(parser->_block_ctx);
6296 vec_free(parser->labels);
6297 vec_free(parser->gotos);
6298 vec_free(parser->breaks);
6299 vec_free(parser->continues);
6301 ast_value_delete(parser->nil);
6303 ast_value_delete(parser->const_vec[0]);
6304 ast_value_delete(parser->const_vec[1]);
6305 ast_value_delete(parser->const_vec[2]);
6307 if (parser->reserved_version)
6308 ast_value_delete(parser->reserved_version);
6310 util_htdel(parser->aliases);
6311 fold_cleanup(parser->fold);
6312 intrin_cleanup(parser->intrin);
6315 void parser_cleanup(parser_t *parser)
6317 parser_remove_ast(parser);
6321 static bool parser_set_coverage_func(parser_t *parser, ir_builder *ir) {
6323 ast_expression *expr;
6327 if (!OPTS_OPTION_BOOL(OPTION_COVERAGE))
6331 for (i = 0; i != vec_size(parser->functions); ++i) {
6332 if (!strcmp(parser->functions[i]->name, "coverage")) {
6333 func = parser->functions[i];
6338 if (OPTS_OPTION_BOOL(OPTION_COVERAGE)) {
6339 con_out("coverage support requested but no coverage() builtin declared\n");
6340 ir_builder_delete(ir);
6347 expr = (ast_expression*)cov;
6349 if (expr->vtype != TYPE_FUNCTION || vec_size(expr->params) != 0) {
6351 ast_type_to_string(expr, ty, sizeof(ty));
6352 con_out("invalid type for coverage(): %s\n", ty);
6353 ir_builder_delete(ir);
6357 ir->coverage_func = func->ir_func->value;
6361 bool parser_finish(parser_t *parser, const char *output)
6367 if (compile_errors) {
6368 con_out("*** there were compile errors\n");
6372 ir = ir_builder_new("gmqcc_out");
6374 con_out("failed to allocate builder\n");
6378 for (i = 0; i < vec_size(parser->fields); ++i) {
6381 if (!ast_istype(parser->fields[i], ast_value))
6383 field = (ast_value*)parser->fields[i];
6384 hasvalue = field->hasvalue;
6385 field->hasvalue = false;
6386 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6387 con_out("failed to generate field %s\n", field->name);
6388 ir_builder_delete(ir);
6393 ast_expression *subtype;
6394 field->hasvalue = true;
6395 subtype = field->expression.next;
6396 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6397 if (subtype->vtype == TYPE_FIELD)
6398 ifld->fieldtype = subtype->next->vtype;
6399 else if (subtype->vtype == TYPE_FUNCTION)
6400 ifld->outtype = subtype->next->vtype;
6401 (void)!ir_value_set_field(field->ir_v, ifld);
6404 for (i = 0; i < vec_size(parser->globals); ++i) {
6406 if (!ast_istype(parser->globals[i], ast_value))
6408 asvalue = (ast_value*)(parser->globals[i]);
6409 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6410 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6411 "unused global: `%s`", asvalue->name);
6413 if (!ast_global_codegen(asvalue, ir, false)) {
6414 con_out("failed to generate global %s\n", asvalue->name);
6415 ir_builder_delete(ir);
6419 /* Build function vararg accessor ast tree now before generating
6420 * immediates, because the accessors may add new immediates
6422 for (i = 0; i < vec_size(parser->functions); ++i) {
6423 ast_function *f = parser->functions[i];
6425 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6426 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6427 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6428 con_out("failed to generate vararg setter for %s\n", f->name);
6429 ir_builder_delete(ir);
6432 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6433 con_out("failed to generate vararg getter for %s\n", f->name);
6434 ir_builder_delete(ir);
6438 ast_delete(f->varargs);
6443 /* Now we can generate immediates */
6444 if (!fold_generate(parser->fold, ir))
6447 /* before generating any functions we need to set the coverage_func */
6448 if (!parser_set_coverage_func(parser, ir))
6451 for (i = 0; i < vec_size(parser->globals); ++i) {
6453 if (!ast_istype(parser->globals[i], ast_value))
6455 asvalue = (ast_value*)(parser->globals[i]);
6456 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6458 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6459 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6460 "uninitialized constant: `%s`",
6462 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6463 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6464 "uninitialized global: `%s`",
6467 if (!ast_generate_accessors(asvalue, ir)) {
6468 ir_builder_delete(ir);
6472 for (i = 0; i < vec_size(parser->fields); ++i) {
6474 asvalue = (ast_value*)(parser->fields[i]->next);
6476 if (!ast_istype((ast_expression*)asvalue, ast_value))
6478 if (asvalue->expression.vtype != TYPE_ARRAY)
6480 if (!ast_generate_accessors(asvalue, ir)) {
6481 ir_builder_delete(ir);
6485 if (parser->reserved_version &&
6486 !ast_global_codegen(parser->reserved_version, ir, false))
6488 con_out("failed to generate reserved::version");
6489 ir_builder_delete(ir);
6492 for (i = 0; i < vec_size(parser->functions); ++i) {
6493 ast_function *f = parser->functions[i];
6494 if (!ast_function_codegen(f, ir)) {
6495 con_out("failed to generate function %s\n", f->name);
6496 ir_builder_delete(ir);
6501 generate_checksum(parser, ir);
6503 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6504 ir_builder_dump(ir, con_out);
6505 for (i = 0; i < vec_size(parser->functions); ++i) {
6506 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6507 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6508 ir_builder_delete(ir);
6512 parser_remove_ast(parser);
6514 if (compile_Werrors) {
6515 con_out("*** there were warnings treated as errors\n");
6516 compile_show_werrors();
6521 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6522 ir_builder_dump(ir, con_out);
6524 if (!ir_builder_generate(ir, output)) {
6525 con_out("*** failed to generate output file\n");
6526 ir_builder_delete(ir);
6530 ir_builder_delete(ir);