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 opid2('~', 'P'):
1149 if (exprs[0]->vtype != TYPE_FLOAT && exprs[0]->vtype != TYPE_VECTOR) {
1150 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1151 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1154 if (!(out = fold_op(parser->fold, op, exprs))) {
1155 if (exprs[0]->vtype == TYPE_FLOAT) {
1156 out = fold_binary(ctx, INSTR_SUB_F, (ast_expression*)parser->fold->imm_float[2], exprs[0]);
1158 out = fold_binary(ctx, INSTR_SUB_V, (ast_expression*)parser->fold->imm_vector[1], exprs[0]);
1165 compile_error(ctx, "failed to apply operator %s", op->op);
1169 vec_push(sy->out, syexp(ctx, out));
1173 static bool parser_close_call(parser_t *parser, shunt *sy)
1175 /* was a function call */
1176 ast_expression *fun;
1177 ast_value *funval = NULL;
1181 size_t paramcount, i;
1184 fid = vec_last(sy->ops).off;
1185 vec_shrinkby(sy->ops, 1);
1187 /* out[fid] is the function
1188 * everything above is parameters...
1190 if (!vec_size(sy->argc)) {
1191 parseerror(parser, "internal error: no argument counter available");
1195 paramcount = vec_last(sy->argc);
1198 if (vec_size(sy->out) < fid) {
1199 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1200 (unsigned long)vec_size(sy->out),
1202 (unsigned long)paramcount);
1207 * TODO handle this at the intrinsic level with an ast_intrinsic
1210 if ((fun = sy->out[fid].out) == intrin_debug_typestring(parser->intrin)) {
1212 if (fid+2 != vec_size(sy->out) ||
1213 vec_last(sy->out).block)
1215 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1218 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1219 ast_unref(vec_last(sy->out).out);
1220 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1221 (ast_expression*)fold_constgen_string(parser->fold, ty, false));
1222 vec_shrinkby(sy->out, 1);
1227 * Now we need to determine if the function that is being called is
1228 * an intrinsic so we can evaluate if the arguments to it are constant
1229 * and than fruitfully fold them.
1231 #define fold_can_1(X) \
1232 (ast_istype(((ast_expression*)(X)), ast_value) && (X)->hasvalue && ((X)->cvq == CV_CONST) && \
1233 ((ast_expression*)(X))->vtype != TYPE_FUNCTION)
1235 if (fid + 1 < vec_size(sy->out))
1238 for (i = 0; i < paramcount; ++i) {
1239 if (!fold_can_1((ast_value*)sy->out[fid + 1 + i].out)) {
1246 * All is well which ends well, if we make it into here we can ignore the
1247 * intrinsic call and just evaluate it i.e constant fold it.
1249 if (fold && ast_istype(fun, ast_value) && ((ast_value*)fun)->intrinsic) {
1250 ast_expression **exprs = NULL;
1251 ast_expression *foldval = NULL;
1253 for (i = 0; i < paramcount; i++)
1254 vec_push(exprs, sy->out[fid+1 + i].out);
1256 if (!(foldval = intrin_fold(parser->intrin, (ast_value*)fun, exprs))) {
1262 * Blub: what sorts of unreffing and resizing of
1263 * sy->out should I be doing here?
1265 sy->out[fid] = syexp(foldval->node.context, foldval);
1266 vec_shrinkby(sy->out, paramcount);
1273 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1278 if (fid+1 + paramcount != vec_size(sy->out)) {
1279 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1280 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1284 for (i = 0; i < paramcount; ++i)
1285 vec_push(call->params, sy->out[fid+1 + i].out);
1286 vec_shrinkby(sy->out, paramcount);
1287 (void)!ast_call_check_types(call, parser->function->vtype->expression.varparam);
1288 if (parser->max_param_count < paramcount)
1289 parser->max_param_count = paramcount;
1291 if (ast_istype(fun, ast_value)) {
1292 funval = (ast_value*)fun;
1293 if ((fun->flags & AST_FLAG_VARIADIC) &&
1294 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1296 call->va_count = (ast_expression*)fold_constgen_float(parser->fold, (qcfloat_t)paramcount);
1300 /* overwrite fid, the function, with a call */
1301 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1303 if (fun->vtype != TYPE_FUNCTION) {
1304 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1309 parseerror(parser, "could not determine function return type");
1312 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1314 if (fun->flags & AST_FLAG_DEPRECATED) {
1316 return !parsewarning(parser, WARN_DEPRECATED,
1317 "call to function (which is marked deprecated)\n",
1318 "-> it has been declared here: %s:%i",
1319 ast_ctx(fun).file, ast_ctx(fun).line);
1322 return !parsewarning(parser, WARN_DEPRECATED,
1323 "call to `%s` (which is marked deprecated)\n"
1324 "-> `%s` declared here: %s:%i",
1325 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1327 return !parsewarning(parser, WARN_DEPRECATED,
1328 "call to `%s` (deprecated: %s)\n"
1329 "-> `%s` declared here: %s:%i",
1330 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1334 if (vec_size(fun->params) != paramcount &&
1335 !((fun->flags & AST_FLAG_VARIADIC) &&
1336 vec_size(fun->params) < paramcount))
1338 const char *fewmany = (vec_size(fun->params) > paramcount) ? "few" : "many";
1340 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1341 "too %s parameters for call to %s: expected %i, got %i\n"
1342 " -> `%s` has been declared here: %s:%i",
1343 fewmany, fval->name, (int)vec_size(fun->params), (int)paramcount,
1344 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1346 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1347 "too %s parameters for function call: expected %i, got %i\n"
1348 " -> it has been declared here: %s:%i",
1349 fewmany, (int)vec_size(fun->params), (int)paramcount,
1350 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1357 static bool parser_close_paren(parser_t *parser, shunt *sy)
1359 if (!vec_size(sy->ops)) {
1360 parseerror(parser, "unmatched closing paren");
1364 while (vec_size(sy->ops)) {
1365 if (vec_last(sy->ops).isparen) {
1366 if (vec_last(sy->paren) == PAREN_FUNC) {
1368 if (!parser_close_call(parser, sy))
1372 if (vec_last(sy->paren) == PAREN_EXPR) {
1374 if (!vec_size(sy->out)) {
1375 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1376 vec_shrinkby(sy->ops, 1);
1379 vec_shrinkby(sy->ops, 1);
1382 if (vec_last(sy->paren) == PAREN_INDEX) {
1384 /* pop off the parenthesis */
1385 vec_shrinkby(sy->ops, 1);
1386 /* then apply the index operator */
1387 if (!parser_sy_apply_operator(parser, sy))
1391 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1392 vec_last(sy->paren) = PAREN_TERNARY2;
1393 /* pop off the parenthesis */
1394 vec_shrinkby(sy->ops, 1);
1397 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1400 if (!parser_sy_apply_operator(parser, sy))
1406 static void parser_reclassify_token(parser_t *parser)
1409 if (parser->tok >= TOKEN_START)
1411 for (i = 0; i < operator_count; ++i) {
1412 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1413 parser->tok = TOKEN_OPERATOR;
1419 static ast_expression* parse_vararg_do(parser_t *parser)
1421 ast_expression *idx, *out;
1423 ast_value *funtype = parser->function->vtype;
1424 lex_ctx_t ctx = parser_ctx(parser);
1426 if (!parser->function->varargs) {
1427 parseerror(parser, "function has no variable argument list");
1431 if (!parser_next(parser) || parser->tok != '(') {
1432 parseerror(parser, "expected parameter index and type in parenthesis");
1435 if (!parser_next(parser)) {
1436 parseerror(parser, "error parsing parameter index");
1440 idx = parse_expression_leave(parser, true, false, false);
1444 if (parser->tok != ',') {
1445 if (parser->tok != ')') {
1447 parseerror(parser, "expected comma after parameter index");
1450 /* vararg piping: ...(start) */
1451 out = (ast_expression*)ast_argpipe_new(ctx, idx);
1455 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1457 parseerror(parser, "expected typename for vararg");
1461 typevar = parse_typename(parser, NULL, NULL, NULL);
1467 if (parser->tok != ')') {
1469 ast_delete(typevar);
1470 parseerror(parser, "expected closing paren");
1474 if (funtype->expression.varparam &&
1475 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1479 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1480 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1481 compile_error(ast_ctx(typevar),
1482 "function was declared to take varargs of type `%s`, requested type is: %s",
1486 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1487 ast_type_adopt(out, typevar);
1488 ast_delete(typevar);
1492 static ast_expression* parse_vararg(parser_t *parser)
1494 bool old_noops = parser->lex->flags.noops;
1496 ast_expression *out;
1498 parser->lex->flags.noops = true;
1499 out = parse_vararg_do(parser);
1501 parser->lex->flags.noops = old_noops;
1505 /* not to be exposed */
1506 bool ftepp_predef_exists(const char *name);
1507 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1509 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1510 parser->tok == TOKEN_IDENT &&
1511 !strcmp(parser_tokval(parser), "_"))
1513 /* a translatable string */
1516 parser->lex->flags.noops = true;
1517 if (!parser_next(parser) || parser->tok != '(') {
1518 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1521 parser->lex->flags.noops = false;
1522 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1523 parseerror(parser, "expected a constant string in translatable-string extension");
1526 val = (ast_value*)fold_constgen_string(parser->fold, parser_tokval(parser), true);
1529 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1531 if (!parser_next(parser) || parser->tok != ')') {
1532 parseerror(parser, "expected closing paren after translatable string");
1537 else if (parser->tok == TOKEN_DOTS)
1540 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1541 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1544 va = parse_vararg(parser);
1547 vec_push(sy->out, syexp(parser_ctx(parser), va));
1550 else if (parser->tok == TOKEN_FLOATCONST) {
1551 ast_expression *val = fold_constgen_float(parser->fold, (parser_token(parser)->constval.f));
1554 vec_push(sy->out, syexp(parser_ctx(parser), val));
1557 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1558 ast_expression *val = fold_constgen_float(parser->fold, (qcfloat_t)(parser_token(parser)->constval.i));
1561 vec_push(sy->out, syexp(parser_ctx(parser), val));
1564 else if (parser->tok == TOKEN_STRINGCONST) {
1565 ast_expression *val = fold_constgen_string(parser->fold, parser_tokval(parser), false);
1568 vec_push(sy->out, syexp(parser_ctx(parser), val));
1571 else if (parser->tok == TOKEN_VECTORCONST) {
1572 ast_expression *val = fold_constgen_vector(parser->fold, parser_token(parser)->constval.v);
1575 vec_push(sy->out, syexp(parser_ctx(parser), val));
1578 else if (parser->tok == TOKEN_IDENT)
1580 const char *ctoken = parser_tokval(parser);
1581 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1582 ast_expression *var;
1583 /* a_vector.{x,y,z} */
1584 if (!vec_size(sy->ops) ||
1585 !vec_last(sy->ops).etype ||
1586 operators[vec_last(sy->ops).etype-1].id != opid1('.'))
1588 /* When adding more intrinsics, fix the above condition */
1591 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1593 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1595 var = parser_find_var(parser, parser_tokval(parser));
1597 var = parser_find_field(parser, parser_tokval(parser));
1599 if (!var && with_labels) {
1600 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1602 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1603 var = (ast_expression*)lbl;
1604 vec_push(parser->labels, lbl);
1607 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
1608 var = (ast_expression*)fold_constgen_string(parser->fold, parser->function->name, false);
1611 * now we try for the real intrinsic hashtable. If the string
1612 * begins with __builtin, we simply skip past it, otherwise we
1613 * use the identifier as is.
1615 if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
1616 var = intrin_func(parser->intrin, parser_tokval(parser));
1620 * Try it again, intrin_func deals with the alias method as well
1621 * the first one masks for __builtin though, we emit warning here.
1624 if ((var = intrin_func(parser->intrin, parser_tokval(parser)))) {
1625 (void)!compile_warning(
1628 "using implicitly defined builtin `__builtin_%s' for `%s'",
1629 parser_tokval(parser),
1630 parser_tokval(parser)
1637 char *correct = NULL;
1641 * sometimes people use preprocessing predefs without enabling them
1642 * i've done this thousands of times already myself. Lets check for
1643 * it in the predef table. And diagnose it better :)
1645 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
1646 parseerror(parser, "unexpected identifier: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1651 * TODO: determine the best score for the identifier: be it
1652 * a variable, a field.
1654 * We should also consider adding correction tables for
1655 * other things as well.
1657 if (OPTS_OPTION_BOOL(OPTION_CORRECTION) && strlen(parser_tokval(parser)) <= 16) {
1659 correct_init(&corr);
1661 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1662 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1663 if (strcmp(correct, parser_tokval(parser))) {
1670 correct_free(&corr);
1673 parseerror(parser, "unexpected identifier: %s (did you mean %s?)", parser_tokval(parser), correct);
1678 parseerror(parser, "unexpected identifier: %s", parser_tokval(parser));
1684 if (ast_istype(var, ast_value)) {
1685 ((ast_value*)var)->uses++;
1687 else if (ast_istype(var, ast_member)) {
1688 ast_member *mem = (ast_member*)var;
1689 if (ast_istype(mem->owner, ast_value))
1690 ((ast_value*)(mem->owner))->uses++;
1693 vec_push(sy->out, syexp(parser_ctx(parser), var));
1696 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1700 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1702 ast_expression *expr = NULL;
1705 bool wantop = false;
1706 /* only warn once about an assignment in a truth value because the current code
1707 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1709 bool warn_parenthesis = true;
1711 /* count the parens because an if starts with one, so the
1712 * end of a condition is an unmatched closing paren
1716 memset(&sy, 0, sizeof(sy));
1718 parser->lex->flags.noops = false;
1720 parser_reclassify_token(parser);
1724 if (parser->tok == TOKEN_TYPENAME) {
1725 parseerror(parser, "unexpected typename `%s`", parser_tokval(parser));
1729 if (parser->tok == TOKEN_OPERATOR)
1731 /* classify the operator */
1732 const oper_info *op;
1733 const oper_info *olast = NULL;
1735 for (o = 0; o < operator_count; ++o) {
1736 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1737 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1738 !strcmp(parser_tokval(parser), operators[o].op))
1743 if (o == operator_count) {
1744 compile_error(parser_ctx(parser), "unexpected operator: %s", parser_tokval(parser));
1747 /* found an operator */
1750 /* when declaring variables, a comma starts a new variable */
1751 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
1752 /* fixup the token */
1757 /* a colon without a pervious question mark cannot be a ternary */
1758 if (!ternaries && op->id == opid2(':','?')) {
1763 if (op->id == opid1(',')) {
1764 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1765 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1769 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1770 olast = &operators[vec_last(sy.ops).etype-1];
1772 /* first only apply higher precedences, assoc_left+equal comes after we warn about precedence rules */
1773 while (olast && op->prec < olast->prec)
1775 if (!parser_sy_apply_operator(parser, &sy))
1777 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1778 olast = &operators[vec_last(sy.ops).etype-1];
1783 #define IsAssignOp(x) (\
1784 (x) == opid1('=') || \
1785 (x) == opid2('+','=') || \
1786 (x) == opid2('-','=') || \
1787 (x) == opid2('*','=') || \
1788 (x) == opid2('/','=') || \
1789 (x) == opid2('%','=') || \
1790 (x) == opid2('&','=') || \
1791 (x) == opid2('|','=') || \
1792 (x) == opid3('&','~','=') \
1794 if (warn_parenthesis) {
1795 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1796 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1797 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
1800 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1801 warn_parenthesis = false;
1804 if (olast && olast->id != op->id) {
1805 if ((op->id == opid1('&') || op->id == opid1('|') || op->id == opid1('^')) &&
1806 (olast->id == opid1('&') || olast->id == opid1('|') || olast->id == opid1('^')))
1808 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around bitwise operations");
1809 warn_parenthesis = false;
1811 else if ((op->id == opid2('&','&') || op->id == opid2('|','|')) &&
1812 (olast->id == opid2('&','&') || olast->id == opid2('|','|')))
1814 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around logical operations");
1815 warn_parenthesis = false;
1821 (op->prec < olast->prec) ||
1822 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1824 if (!parser_sy_apply_operator(parser, &sy))
1826 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1827 olast = &operators[vec_last(sy.ops).etype-1];
1832 if (op->id == opid1('(')) {
1834 size_t sycount = vec_size(sy.out);
1835 /* we expected an operator, this is the function-call operator */
1836 vec_push(sy.paren, PAREN_FUNC);
1837 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
1838 vec_push(sy.argc, 0);
1840 vec_push(sy.paren, PAREN_EXPR);
1841 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1844 } else if (op->id == opid1('[')) {
1846 parseerror(parser, "unexpected array subscript");
1849 vec_push(sy.paren, PAREN_INDEX);
1850 /* push both the operator and the paren, this makes life easier */
1851 vec_push(sy.ops, syop(parser_ctx(parser), op));
1852 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1854 } else if (op->id == opid2('?',':')) {
1855 vec_push(sy.ops, syop(parser_ctx(parser), op));
1856 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1859 vec_push(sy.paren, PAREN_TERNARY1);
1860 } else if (op->id == opid2(':','?')) {
1861 if (!vec_size(sy.paren)) {
1862 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1865 if (vec_last(sy.paren) != PAREN_TERNARY1) {
1866 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1869 if (!parser_close_paren(parser, &sy))
1871 vec_push(sy.ops, syop(parser_ctx(parser), op));
1875 vec_push(sy.ops, syop(parser_ctx(parser), op));
1876 wantop = !!(op->flags & OP_SUFFIX);
1879 else if (parser->tok == ')') {
1880 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1881 if (!parser_sy_apply_operator(parser, &sy))
1884 if (!vec_size(sy.paren))
1887 if (vec_last(sy.paren) == PAREN_TERNARY1) {
1888 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
1891 if (!parser_close_paren(parser, &sy))
1894 /* must be a function call without parameters */
1895 if (vec_last(sy.paren) != PAREN_FUNC) {
1896 parseerror(parser, "closing paren in invalid position");
1899 if (!parser_close_paren(parser, &sy))
1904 else if (parser->tok == '(') {
1905 parseerror(parser, "internal error: '(' should be classified as operator");
1908 else if (parser->tok == '[') {
1909 parseerror(parser, "internal error: '[' should be classified as operator");
1912 else if (parser->tok == ']') {
1913 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1914 if (!parser_sy_apply_operator(parser, &sy))
1917 if (!vec_size(sy.paren))
1919 if (vec_last(sy.paren) != PAREN_INDEX) {
1920 parseerror(parser, "mismatched parentheses, unexpected ']'");
1923 if (!parser_close_paren(parser, &sy))
1928 if (!parse_sya_operand(parser, &sy, with_labels))
1931 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
1932 vec_last(sy.argc)++;
1937 /* in this case we might want to allow constant string concatenation */
1938 bool concatenated = false;
1939 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
1940 ast_expression *lexpr = vec_last(sy.out).out;
1941 if (ast_istype(lexpr, ast_value)) {
1942 ast_value *last = (ast_value*)lexpr;
1943 if (last->isimm == true && last->cvq == CV_CONST &&
1944 last->hasvalue && last->expression.vtype == TYPE_STRING)
1946 char *newstr = NULL;
1947 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
1948 vec_last(sy.out).out = (ast_expression*)fold_constgen_string(parser->fold, newstr, false);
1950 concatenated = true;
1954 if (!concatenated) {
1955 parseerror(parser, "expected operator or end of statement");
1960 if (!parser_next(parser)) {
1963 if (parser->tok == ';' ||
1964 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
1965 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
1971 while (vec_size(sy.ops)) {
1972 if (!parser_sy_apply_operator(parser, &sy))
1976 parser->lex->flags.noops = true;
1977 if (vec_size(sy.out) != 1) {
1978 parseerror(parser, "expression expected");
1981 expr = sy.out[0].out;
1984 if (vec_size(sy.paren)) {
1985 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
1993 parser->lex->flags.noops = true;
1994 for (i = 0; i < vec_size(sy.out); ++i) {
1996 ast_unref(sy.out[i].out);
2005 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
2007 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
2010 if (parser->tok != ';') {
2011 parseerror(parser, "semicolon expected after expression");
2015 if (!parser_next(parser)) {
2022 static void parser_enterblock(parser_t *parser)
2024 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2025 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2026 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2027 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2028 vec_push(parser->_block_ctx, parser_ctx(parser));
2031 vec_push(parser->correct_variables, correct_trie_new());
2032 vec_push(parser->correct_variables_score, NULL);
2035 static bool parser_leaveblock(parser_t *parser)
2038 size_t locals, typedefs;
2040 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2041 parseerror(parser, "internal error: parser_leaveblock with no block");
2045 util_htdel(vec_last(parser->variables));
2046 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2048 vec_pop(parser->variables);
2049 vec_pop(parser->correct_variables);
2050 vec_pop(parser->correct_variables_score);
2051 if (!vec_size(parser->_blocklocals)) {
2052 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2056 locals = vec_last(parser->_blocklocals);
2057 vec_pop(parser->_blocklocals);
2058 while (vec_size(parser->_locals) != locals) {
2059 ast_expression *e = vec_last(parser->_locals);
2060 ast_value *v = (ast_value*)e;
2061 vec_pop(parser->_locals);
2062 if (ast_istype(e, ast_value) && !v->uses) {
2063 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2068 typedefs = vec_last(parser->_blocktypedefs);
2069 while (vec_size(parser->_typedefs) != typedefs) {
2070 ast_delete(vec_last(parser->_typedefs));
2071 vec_pop(parser->_typedefs);
2073 util_htdel(vec_last(parser->typedefs));
2074 vec_pop(parser->typedefs);
2076 vec_pop(parser->_block_ctx);
2081 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2083 vec_push(parser->_locals, e);
2084 util_htset(vec_last(parser->variables), name, (void*)e);
2088 vec_last(parser->correct_variables),
2089 &vec_last(parser->correct_variables_score),
2094 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2096 vec_push(parser->globals, e);
2097 util_htset(parser->htglobals, name, e);
2101 parser->correct_variables[0],
2102 &parser->correct_variables_score[0],
2107 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2111 ast_expression *prev;
2113 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2115 ast_type_to_string(cond, ty, sizeof(ty));
2116 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2119 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2122 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2125 parseerror(parser, "internal error: failed to process condition");
2130 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2132 /* vector types need to be cast to true booleans */
2133 ast_binary *bin = (ast_binary*)cond;
2134 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2136 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2138 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2141 parseerror(parser, "internal error: failed to process condition");
2148 unary = (ast_unary*)cond;
2149 /* ast_istype dereferences cond, should test here for safety */
2150 while (cond && ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2152 cond = unary->operand;
2153 unary->operand = NULL;
2156 unary = (ast_unary*)cond;
2160 parseerror(parser, "internal error: failed to process condition");
2162 if (ifnot) *_ifnot = !*_ifnot;
2166 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2169 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2172 lex_ctx_t ctx = parser_ctx(parser);
2174 (void)block; /* not touching */
2176 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2177 if (!parser_next(parser)) {
2178 parseerror(parser, "expected condition or 'not'");
2181 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2183 if (!parser_next(parser)) {
2184 parseerror(parser, "expected condition in parenthesis");
2188 if (parser->tok != '(') {
2189 parseerror(parser, "expected 'if' condition in parenthesis");
2192 /* parse into the expression */
2193 if (!parser_next(parser)) {
2194 parseerror(parser, "expected 'if' condition after opening paren");
2197 /* parse the condition */
2198 cond = parse_expression_leave(parser, false, true, false);
2202 if (parser->tok != ')') {
2203 parseerror(parser, "expected closing paren after 'if' condition");
2207 /* parse into the 'then' branch */
2208 if (!parser_next(parser)) {
2209 parseerror(parser, "expected statement for on-true branch of 'if'");
2213 if (!parse_statement_or_block(parser, &ontrue)) {
2218 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2219 /* check for an else */
2220 if (!strcmp(parser_tokval(parser), "else")) {
2221 /* parse into the 'else' branch */
2222 if (!parser_next(parser)) {
2223 parseerror(parser, "expected on-false branch after 'else'");
2228 if (!parse_statement_or_block(parser, &onfalse)) {
2235 cond = process_condition(parser, cond, &ifnot);
2237 if (ontrue) ast_delete(ontrue);
2238 if (onfalse) ast_delete(onfalse);
2243 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2245 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2246 *out = (ast_expression*)ifthen;
2250 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2251 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2256 /* skip the 'while' and get the body */
2257 if (!parser_next(parser)) {
2258 if (OPTS_FLAG(LOOP_LABELS))
2259 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2261 parseerror(parser, "expected 'while' condition in parenthesis");
2265 if (parser->tok == ':') {
2266 if (!OPTS_FLAG(LOOP_LABELS))
2267 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2268 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2269 parseerror(parser, "expected loop label");
2272 label = util_strdup(parser_tokval(parser));
2273 if (!parser_next(parser)) {
2275 parseerror(parser, "expected 'while' condition in parenthesis");
2280 if (parser->tok != '(') {
2281 parseerror(parser, "expected 'while' condition in parenthesis");
2285 vec_push(parser->breaks, label);
2286 vec_push(parser->continues, label);
2288 rv = parse_while_go(parser, block, out);
2291 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2292 parseerror(parser, "internal error: label stack corrupted");
2298 vec_pop(parser->breaks);
2299 vec_pop(parser->continues);
2304 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2307 ast_expression *cond, *ontrue;
2311 lex_ctx_t ctx = parser_ctx(parser);
2313 (void)block; /* not touching */
2315 /* parse into the expression */
2316 if (!parser_next(parser)) {
2317 parseerror(parser, "expected 'while' condition after opening paren");
2320 /* parse the condition */
2321 cond = parse_expression_leave(parser, false, true, false);
2325 if (parser->tok != ')') {
2326 parseerror(parser, "expected closing paren after 'while' condition");
2330 /* parse into the 'then' branch */
2331 if (!parser_next(parser)) {
2332 parseerror(parser, "expected while-loop body");
2336 if (!parse_statement_or_block(parser, &ontrue)) {
2341 cond = process_condition(parser, cond, &ifnot);
2346 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2347 *out = (ast_expression*)aloop;
2351 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2352 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2357 /* skip the 'do' and get the body */
2358 if (!parser_next(parser)) {
2359 if (OPTS_FLAG(LOOP_LABELS))
2360 parseerror(parser, "expected loop label or body");
2362 parseerror(parser, "expected loop body");
2366 if (parser->tok == ':') {
2367 if (!OPTS_FLAG(LOOP_LABELS))
2368 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2369 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2370 parseerror(parser, "expected loop label");
2373 label = util_strdup(parser_tokval(parser));
2374 if (!parser_next(parser)) {
2376 parseerror(parser, "expected loop body");
2381 vec_push(parser->breaks, label);
2382 vec_push(parser->continues, label);
2384 rv = parse_dowhile_go(parser, block, out);
2387 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2388 parseerror(parser, "internal error: label stack corrupted");
2391 * Test for NULL otherwise ast_delete dereferences null pointer
2399 vec_pop(parser->breaks);
2400 vec_pop(parser->continues);
2405 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2408 ast_expression *cond, *ontrue;
2412 lex_ctx_t ctx = parser_ctx(parser);
2414 (void)block; /* not touching */
2416 if (!parse_statement_or_block(parser, &ontrue))
2419 /* expect the "while" */
2420 if (parser->tok != TOKEN_KEYWORD ||
2421 strcmp(parser_tokval(parser), "while"))
2423 parseerror(parser, "expected 'while' and condition");
2428 /* skip the 'while' and check for opening paren */
2429 if (!parser_next(parser) || parser->tok != '(') {
2430 parseerror(parser, "expected 'while' condition in parenthesis");
2434 /* parse into the expression */
2435 if (!parser_next(parser)) {
2436 parseerror(parser, "expected 'while' condition after opening paren");
2440 /* parse the condition */
2441 cond = parse_expression_leave(parser, false, true, false);
2445 if (parser->tok != ')') {
2446 parseerror(parser, "expected closing paren after 'while' condition");
2452 if (!parser_next(parser) || parser->tok != ';') {
2453 parseerror(parser, "expected semicolon after condition");
2459 if (!parser_next(parser)) {
2460 parseerror(parser, "parse error");
2466 cond = process_condition(parser, cond, &ifnot);
2471 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2472 *out = (ast_expression*)aloop;
2476 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2477 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2482 /* skip the 'for' and check for opening paren */
2483 if (!parser_next(parser)) {
2484 if (OPTS_FLAG(LOOP_LABELS))
2485 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2487 parseerror(parser, "expected 'for' expressions in parenthesis");
2491 if (parser->tok == ':') {
2492 if (!OPTS_FLAG(LOOP_LABELS))
2493 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2494 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2495 parseerror(parser, "expected loop label");
2498 label = util_strdup(parser_tokval(parser));
2499 if (!parser_next(parser)) {
2501 parseerror(parser, "expected 'for' expressions in parenthesis");
2506 if (parser->tok != '(') {
2507 parseerror(parser, "expected 'for' expressions in parenthesis");
2511 vec_push(parser->breaks, label);
2512 vec_push(parser->continues, label);
2514 rv = parse_for_go(parser, block, out);
2517 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2518 parseerror(parser, "internal error: label stack corrupted");
2524 vec_pop(parser->breaks);
2525 vec_pop(parser->continues);
2529 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2532 ast_expression *initexpr, *cond, *increment, *ontrue;
2537 lex_ctx_t ctx = parser_ctx(parser);
2539 parser_enterblock(parser);
2546 /* parse into the expression */
2547 if (!parser_next(parser)) {
2548 parseerror(parser, "expected 'for' initializer after opening paren");
2553 if (parser->tok == TOKEN_IDENT)
2554 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2556 if (typevar || parser->tok == TOKEN_TYPENAME) {
2558 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2559 if (parsewarning(parser, WARN_EXTENSIONS,
2560 "current standard does not allow variable declarations in for-loop initializers"))
2564 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2567 else if (parser->tok != ';')
2569 initexpr = parse_expression_leave(parser, false, false, false);
2574 /* move on to condition */
2575 if (parser->tok != ';') {
2576 parseerror(parser, "expected semicolon after for-loop initializer");
2579 if (!parser_next(parser)) {
2580 parseerror(parser, "expected for-loop condition");
2584 /* parse the condition */
2585 if (parser->tok != ';') {
2586 cond = parse_expression_leave(parser, false, true, false);
2591 /* move on to incrementor */
2592 if (parser->tok != ';') {
2593 parseerror(parser, "expected semicolon after for-loop initializer");
2596 if (!parser_next(parser)) {
2597 parseerror(parser, "expected for-loop condition");
2601 /* parse the incrementor */
2602 if (parser->tok != ')') {
2603 lex_ctx_t condctx = parser_ctx(parser);
2604 increment = parse_expression_leave(parser, false, false, false);
2607 if (!ast_side_effects(increment)) {
2608 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2614 if (parser->tok != ')') {
2615 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2618 /* parse into the 'then' branch */
2619 if (!parser_next(parser)) {
2620 parseerror(parser, "expected for-loop body");
2623 if (!parse_statement_or_block(parser, &ontrue))
2627 cond = process_condition(parser, cond, &ifnot);
2631 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2632 *out = (ast_expression*)aloop;
2634 if (!parser_leaveblock(parser)) {
2640 if (initexpr) ast_unref(initexpr);
2641 if (cond) ast_unref(cond);
2642 if (increment) ast_unref(increment);
2643 (void)!parser_leaveblock(parser);
2647 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2649 ast_expression *exp = NULL;
2650 ast_expression *var = NULL;
2651 ast_return *ret = NULL;
2652 ast_value *retval = parser->function->return_value;
2653 ast_value *expected = parser->function->vtype;
2655 lex_ctx_t ctx = parser_ctx(parser);
2657 (void)block; /* not touching */
2659 if (!parser_next(parser)) {
2660 parseerror(parser, "expected return expression");
2664 /* return assignments */
2665 if (parser->tok == '=') {
2666 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
2667 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
2671 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
2673 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
2674 parseerror(parser, "invalid return type: `%s'", ty1);
2678 if (!parser_next(parser)) {
2679 parseerror(parser, "expected return assignment expression");
2683 if (!(exp = parse_expression_leave(parser, false, false, false)))
2686 /* prepare the return value */
2688 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
2689 ast_type_adopt(retval, expected->expression.next);
2690 parser->function->return_value = retval;
2693 if (!ast_compare_type(exp, (ast_expression*)retval)) {
2694 char ty1[1024], ty2[1024];
2695 ast_type_to_string(exp, ty1, sizeof(ty1));
2696 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
2697 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
2700 /* store to 'return' local variable */
2701 var = (ast_expression*)ast_store_new(
2703 type_store_instr[expected->expression.next->vtype],
2704 (ast_expression*)retval, exp);
2711 if (parser->tok != ';')
2712 parseerror(parser, "missing semicolon after return assignment");
2713 else if (!parser_next(parser))
2714 parseerror(parser, "parse error after return assignment");
2720 if (parser->tok != ';') {
2721 exp = parse_expression(parser, false, false);
2725 if (exp->vtype != TYPE_NIL &&
2726 exp->vtype != ((ast_expression*)expected)->next->vtype)
2728 parseerror(parser, "return with invalid expression");
2731 ret = ast_return_new(ctx, exp);
2737 if (!parser_next(parser))
2738 parseerror(parser, "parse error");
2740 if (!retval && expected->expression.next->vtype != TYPE_VOID)
2742 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2744 ret = ast_return_new(ctx, (ast_expression*)retval);
2746 *out = (ast_expression*)ret;
2750 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2753 unsigned int levels = 0;
2754 lex_ctx_t ctx = parser_ctx(parser);
2755 const char **loops = (is_continue ? parser->continues : parser->breaks);
2757 (void)block; /* not touching */
2758 if (!parser_next(parser)) {
2759 parseerror(parser, "expected semicolon or loop label");
2763 if (!vec_size(loops)) {
2765 parseerror(parser, "`continue` can only be used inside loops");
2767 parseerror(parser, "`break` can only be used inside loops or switches");
2770 if (parser->tok == TOKEN_IDENT) {
2771 if (!OPTS_FLAG(LOOP_LABELS))
2772 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2773 i = vec_size(loops);
2775 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2778 parseerror(parser, "no such loop to %s: `%s`",
2779 (is_continue ? "continue" : "break out of"),
2780 parser_tokval(parser));
2785 if (!parser_next(parser)) {
2786 parseerror(parser, "expected semicolon");
2791 if (parser->tok != ';') {
2792 parseerror(parser, "expected semicolon");
2796 if (!parser_next(parser))
2797 parseerror(parser, "parse error");
2799 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2803 /* returns true when it was a variable qualifier, false otherwise!
2804 * on error, cvq is set to CV_WRONG
2811 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2813 bool had_const = false;
2814 bool had_var = false;
2815 bool had_noref = false;
2816 bool had_attrib = false;
2817 bool had_static = false;
2820 static attribute_t attributes[] = {
2821 { "noreturn", AST_FLAG_NORETURN },
2822 { "inline", AST_FLAG_INLINE },
2823 { "eraseable", AST_FLAG_ERASEABLE },
2824 { "accumulate", AST_FLAG_ACCUMULATE },
2825 { "last", AST_FLAG_FINAL_DECL }
2832 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2834 /* parse an attribute */
2835 if (!parser_next(parser)) {
2836 parseerror(parser, "expected attribute after `[[`");
2841 for (i = 0; i < GMQCC_ARRAY_COUNT(attributes); i++) {
2842 if (!strcmp(parser_tokval(parser), attributes[i].name)) {
2843 flags |= attributes[i].flag;
2844 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2845 parseerror(parser, "`%s` attribute has no parameters, expected `]]`",
2846 attributes[i].name);
2854 if (i != GMQCC_ARRAY_COUNT(attributes))
2858 if (!strcmp(parser_tokval(parser), "noref")) {
2860 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2861 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2866 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
2867 flags |= AST_FLAG_ALIAS;
2870 if (!parser_next(parser)) {
2871 parseerror(parser, "parse error in attribute");
2875 if (parser->tok == '(') {
2876 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2877 parseerror(parser, "`alias` attribute missing parameter");
2881 *message = util_strdup(parser_tokval(parser));
2883 if (!parser_next(parser)) {
2884 parseerror(parser, "parse error in attribute");
2888 if (parser->tok != ')') {
2889 parseerror(parser, "`alias` attribute expected `)` after parameter");
2893 if (!parser_next(parser)) {
2894 parseerror(parser, "parse error in attribute");
2899 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2900 parseerror(parser, "`alias` attribute expected `]]`");
2904 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2905 flags |= AST_FLAG_DEPRECATED;
2908 if (!parser_next(parser)) {
2909 parseerror(parser, "parse error in attribute");
2913 if (parser->tok == '(') {
2914 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2915 parseerror(parser, "`deprecated` attribute missing parameter");
2919 *message = util_strdup(parser_tokval(parser));
2921 if (!parser_next(parser)) {
2922 parseerror(parser, "parse error in attribute");
2926 if(parser->tok != ')') {
2927 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2931 if (!parser_next(parser)) {
2932 parseerror(parser, "parse error in attribute");
2937 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2938 parseerror(parser, "`deprecated` attribute expected `]]`");
2941 if (*message) mem_d(*message);
2949 /* Skip tokens until we hit a ]] */
2950 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2951 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2952 if (!parser_next(parser)) {
2953 parseerror(parser, "error inside attribute");
2960 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2962 else if (!strcmp(parser_tokval(parser), "const"))
2964 else if (!strcmp(parser_tokval(parser), "var"))
2966 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2968 else if (!strcmp(parser_tokval(parser), "noref"))
2970 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2977 if (!parser_next(parser))
2987 *is_static = had_static;
2991 parseerror(parser, "parse error after variable qualifier");
2996 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2997 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
3002 /* skip the 'while' and get the body */
3003 if (!parser_next(parser)) {
3004 if (OPTS_FLAG(LOOP_LABELS))
3005 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
3007 parseerror(parser, "expected 'switch' operand in parenthesis");
3011 if (parser->tok == ':') {
3012 if (!OPTS_FLAG(LOOP_LABELS))
3013 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3014 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3015 parseerror(parser, "expected loop label");
3018 label = util_strdup(parser_tokval(parser));
3019 if (!parser_next(parser)) {
3021 parseerror(parser, "expected 'switch' operand in parenthesis");
3026 if (parser->tok != '(') {
3027 parseerror(parser, "expected 'switch' operand in parenthesis");
3031 vec_push(parser->breaks, label);
3033 rv = parse_switch_go(parser, block, out);
3036 if (vec_last(parser->breaks) != label) {
3037 parseerror(parser, "internal error: label stack corrupted");
3043 vec_pop(parser->breaks);
3048 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3050 ast_expression *operand;
3053 ast_switch *switchnode;
3054 ast_switch_case swcase;
3057 bool noref, is_static;
3058 uint32_t qflags = 0;
3060 lex_ctx_t ctx = parser_ctx(parser);
3062 (void)block; /* not touching */
3065 /* parse into the expression */
3066 if (!parser_next(parser)) {
3067 parseerror(parser, "expected switch operand");
3070 /* parse the operand */
3071 operand = parse_expression_leave(parser, false, false, false);
3075 switchnode = ast_switch_new(ctx, operand);
3078 if (parser->tok != ')') {
3079 ast_delete(switchnode);
3080 parseerror(parser, "expected closing paren after 'switch' operand");
3084 /* parse over the opening paren */
3085 if (!parser_next(parser) || parser->tok != '{') {
3086 ast_delete(switchnode);
3087 parseerror(parser, "expected list of cases");
3091 if (!parser_next(parser)) {
3092 ast_delete(switchnode);
3093 parseerror(parser, "expected 'case' or 'default'");
3097 /* new block; allow some variables to be declared here */
3098 parser_enterblock(parser);
3101 if (parser->tok == TOKEN_IDENT)
3102 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3103 if (typevar || parser->tok == TOKEN_TYPENAME) {
3104 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3105 ast_delete(switchnode);
3110 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3112 if (cvq == CV_WRONG) {
3113 ast_delete(switchnode);
3116 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3117 ast_delete(switchnode);
3126 while (parser->tok != '}') {
3127 ast_block *caseblock;
3129 if (!strcmp(parser_tokval(parser), "case")) {
3130 if (!parser_next(parser)) {
3131 ast_delete(switchnode);
3132 parseerror(parser, "expected expression for case");
3135 swcase.value = parse_expression_leave(parser, false, false, false);
3136 if (!swcase.value) {
3137 ast_delete(switchnode);
3138 parseerror(parser, "expected expression for case");
3141 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3142 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3143 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3149 else if (!strcmp(parser_tokval(parser), "default")) {
3150 swcase.value = NULL;
3151 if (!parser_next(parser)) {
3152 ast_delete(switchnode);
3153 parseerror(parser, "expected colon");
3158 ast_delete(switchnode);
3159 parseerror(parser, "expected 'case' or 'default'");
3163 /* Now the colon and body */
3164 if (parser->tok != ':') {
3165 if (swcase.value) ast_unref(swcase.value);
3166 ast_delete(switchnode);
3167 parseerror(parser, "expected colon");
3171 if (!parser_next(parser)) {
3172 if (swcase.value) ast_unref(swcase.value);
3173 ast_delete(switchnode);
3174 parseerror(parser, "expected statements or case");
3177 caseblock = ast_block_new(parser_ctx(parser));
3179 if (swcase.value) ast_unref(swcase.value);
3180 ast_delete(switchnode);
3183 swcase.code = (ast_expression*)caseblock;
3184 vec_push(switchnode->cases, swcase);
3186 ast_expression *expr;
3187 if (parser->tok == '}')
3189 if (parser->tok == TOKEN_KEYWORD) {
3190 if (!strcmp(parser_tokval(parser), "case") ||
3191 !strcmp(parser_tokval(parser), "default"))
3196 if (!parse_statement(parser, caseblock, &expr, true)) {
3197 ast_delete(switchnode);
3202 if (!ast_block_add_expr(caseblock, expr)) {
3203 ast_delete(switchnode);
3209 parser_leaveblock(parser);
3212 if (parser->tok != '}') {
3213 ast_delete(switchnode);
3214 parseerror(parser, "expected closing paren of case list");
3217 if (!parser_next(parser)) {
3218 ast_delete(switchnode);
3219 parseerror(parser, "parse error after switch");
3222 *out = (ast_expression*)switchnode;
3226 /* parse computed goto sides */
3227 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3228 ast_expression *on_true;
3229 ast_expression *on_false;
3230 ast_expression *cond;
3235 if (ast_istype(*side, ast_ternary)) {
3236 ast_ternary *tern = (ast_ternary*)*side;
3237 on_true = parse_goto_computed(parser, &tern->on_true);
3238 on_false = parse_goto_computed(parser, &tern->on_false);
3240 if (!on_true || !on_false) {
3241 parseerror(parser, "expected label or expression in ternary");
3242 if (on_true) ast_unref(on_true);
3243 if (on_false) ast_unref(on_false);
3251 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3252 } else if (ast_istype(*side, ast_label)) {
3253 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3254 ast_goto_set_label(gt, ((ast_label*)*side));
3256 return (ast_expression*)gt;
3261 static bool parse_goto(parser_t *parser, ast_expression **out)
3263 ast_goto *gt = NULL;
3264 ast_expression *lbl;
3266 if (!parser_next(parser))
3269 if (parser->tok != TOKEN_IDENT) {
3270 ast_expression *expression;
3272 /* could be an expression i.e computed goto :-) */
3273 if (parser->tok != '(') {
3274 parseerror(parser, "expected label name after `goto`");
3278 /* failed to parse expression for goto */
3279 if (!(expression = parse_expression(parser, false, true)) ||
3280 !(*out = parse_goto_computed(parser, &expression))) {
3281 parseerror(parser, "invalid goto expression");
3283 ast_unref(expression);
3290 /* not computed goto */
3291 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3292 lbl = parser_find_label(parser, gt->name);
3294 if (!ast_istype(lbl, ast_label)) {
3295 parseerror(parser, "internal error: label is not an ast_label");
3299 ast_goto_set_label(gt, (ast_label*)lbl);
3302 vec_push(parser->gotos, gt);
3304 if (!parser_next(parser) || parser->tok != ';') {
3305 parseerror(parser, "semicolon expected after goto label");
3308 if (!parser_next(parser)) {
3309 parseerror(parser, "parse error after goto");
3313 *out = (ast_expression*)gt;
3317 static bool parse_skipwhite(parser_t *parser)
3320 if (!parser_next(parser))
3322 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3323 return parser->tok < TOKEN_ERROR;
3326 static bool parse_eol(parser_t *parser)
3328 if (!parse_skipwhite(parser))
3330 return parser->tok == TOKEN_EOL;
3333 static bool parse_pragma_do(parser_t *parser)
3335 if (!parser_next(parser) ||
3336 parser->tok != TOKEN_IDENT ||
3337 strcmp(parser_tokval(parser), "pragma"))
3339 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3342 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3343 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3347 if (!strcmp(parser_tokval(parser), "noref")) {
3348 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3349 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3352 parser->noref = !!parser_token(parser)->constval.i;
3353 if (!parse_eol(parser)) {
3354 parseerror(parser, "parse error after `noref` pragma");
3360 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3363 while (!parse_eol(parser)) {
3364 parser_next(parser);
3373 static bool parse_pragma(parser_t *parser)
3376 parser->lex->flags.preprocessing = true;
3377 parser->lex->flags.mergelines = true;
3378 rv = parse_pragma_do(parser);
3379 if (parser->tok != TOKEN_EOL) {
3380 parseerror(parser, "junk after pragma");
3383 parser->lex->flags.preprocessing = false;
3384 parser->lex->flags.mergelines = false;
3385 if (!parser_next(parser)) {
3386 parseerror(parser, "parse error after pragma");
3392 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3394 bool noref, is_static;
3396 uint32_t qflags = 0;
3397 ast_value *typevar = NULL;
3398 char *vstring = NULL;
3402 if (parser->tok == TOKEN_IDENT)
3403 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3405 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.' || parser->tok == TOKEN_DOTS)
3407 /* local variable */
3409 parseerror(parser, "cannot declare a variable from here");
3412 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3413 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3416 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3420 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3422 if (cvq == CV_WRONG)
3424 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3426 else if (parser->tok == TOKEN_KEYWORD)
3428 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3433 if (!parser_next(parser)) {
3434 parseerror(parser, "parse error after __builtin_debug_printtype");
3438 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3440 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3441 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3442 if (!parser_next(parser)) {
3443 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3449 if (!parse_statement(parser, block, out, allow_cases))
3452 con_out("__builtin_debug_printtype: got no output node\n");
3455 ast_type_to_string(*out, ty, sizeof(ty));
3456 con_out("__builtin_debug_printtype: `%s`\n", ty);
3461 else if (!strcmp(parser_tokval(parser), "return"))
3463 return parse_return(parser, block, out);
3465 else if (!strcmp(parser_tokval(parser), "if"))
3467 return parse_if(parser, block, out);
3469 else if (!strcmp(parser_tokval(parser), "while"))
3471 return parse_while(parser, block, out);
3473 else if (!strcmp(parser_tokval(parser), "do"))
3475 return parse_dowhile(parser, block, out);
3477 else if (!strcmp(parser_tokval(parser), "for"))
3479 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3480 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3483 return parse_for(parser, block, out);
3485 else if (!strcmp(parser_tokval(parser), "break"))
3487 return parse_break_continue(parser, block, out, false);
3489 else if (!strcmp(parser_tokval(parser), "continue"))
3491 return parse_break_continue(parser, block, out, true);
3493 else if (!strcmp(parser_tokval(parser), "switch"))
3495 return parse_switch(parser, block, out);
3497 else if (!strcmp(parser_tokval(parser), "case") ||
3498 !strcmp(parser_tokval(parser), "default"))
3501 parseerror(parser, "unexpected 'case' label");
3506 else if (!strcmp(parser_tokval(parser), "goto"))
3508 return parse_goto(parser, out);
3510 else if (!strcmp(parser_tokval(parser), "typedef"))
3512 if (!parser_next(parser)) {
3513 parseerror(parser, "expected type definition after 'typedef'");
3516 return parse_typedef(parser);
3518 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3521 else if (parser->tok == '{')
3524 inner = parse_block(parser);
3527 *out = (ast_expression*)inner;
3530 else if (parser->tok == ':')
3534 if (!parser_next(parser)) {
3535 parseerror(parser, "expected label name");
3538 if (parser->tok != TOKEN_IDENT) {
3539 parseerror(parser, "label must be an identifier");
3542 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3544 if (!label->undefined) {
3545 parseerror(parser, "label `%s` already defined", label->name);
3548 label->undefined = false;
3551 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3552 vec_push(parser->labels, label);
3554 *out = (ast_expression*)label;
3555 if (!parser_next(parser)) {
3556 parseerror(parser, "parse error after label");
3559 for (i = 0; i < vec_size(parser->gotos); ++i) {
3560 if (!strcmp(parser->gotos[i]->name, label->name)) {
3561 ast_goto_set_label(parser->gotos[i], label);
3562 vec_remove(parser->gotos, i, 1);
3568 else if (parser->tok == ';')
3570 if (!parser_next(parser)) {
3571 parseerror(parser, "parse error after empty statement");
3578 lex_ctx_t ctx = parser_ctx(parser);
3579 ast_expression *exp = parse_expression(parser, false, false);
3583 if (!ast_side_effects(exp)) {
3584 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3591 static bool parse_enum(parser_t *parser)
3594 bool reverse = false;
3596 ast_value **values = NULL;
3597 ast_value *var = NULL;
3600 ast_expression *old;
3602 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3603 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3607 /* enumeration attributes (can add more later) */
3608 if (parser->tok == ':') {
3609 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3610 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3615 if (!strcmp(parser_tokval(parser), "flag")) {
3619 else if (!strcmp(parser_tokval(parser), "reverse")) {
3623 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3627 if (!parser_next(parser) || parser->tok != '{') {
3628 parseerror(parser, "expected `{` after enum attribute ");
3634 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3635 if (parser->tok == '}') {
3636 /* allow an empty enum */
3639 parseerror(parser, "expected identifier or `}`");
3643 old = parser_find_field(parser, parser_tokval(parser));
3645 old = parser_find_global(parser, parser_tokval(parser));
3647 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3648 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3652 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3653 vec_push(values, var);
3654 var->cvq = CV_CONST;
3655 var->hasvalue = true;
3657 /* for flagged enumerations increment in POTs of TWO */
3658 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3659 parser_addglobal(parser, var->name, (ast_expression*)var);
3661 if (!parser_next(parser)) {
3662 parseerror(parser, "expected `=`, `}` or comma after identifier");
3666 if (parser->tok == ',')
3668 if (parser->tok == '}')
3670 if (parser->tok != '=') {
3671 parseerror(parser, "expected `=`, `}` or comma after identifier");
3675 if (!parser_next(parser)) {
3676 parseerror(parser, "expected expression after `=`");
3680 /* We got a value! */
3681 old = parse_expression_leave(parser, true, false, false);
3682 asvalue = (ast_value*)old;
3683 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3684 compile_error(ast_ctx(var), "constant value or expression expected");
3687 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3689 if (parser->tok == '}')
3691 if (parser->tok != ',') {
3692 parseerror(parser, "expected `}` or comma after expression");
3697 /* patch them all (for reversed attribute) */
3700 for (i = 0; i < vec_size(values); i++)
3701 values[i]->constval.vfloat = vec_size(values) - i - 1;
3704 if (parser->tok != '}') {
3705 parseerror(parser, "internal error: breaking without `}`");
3709 if (!parser_next(parser) || parser->tok != ';') {
3710 parseerror(parser, "expected semicolon after enumeration");
3714 if (!parser_next(parser)) {
3715 parseerror(parser, "parse error after enumeration");
3727 static bool parse_block_into(parser_t *parser, ast_block *block)
3731 parser_enterblock(parser);
3733 if (!parser_next(parser)) { /* skip the '{' */
3734 parseerror(parser, "expected function body");
3738 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3740 ast_expression *expr = NULL;
3741 if (parser->tok == '}')
3744 if (!parse_statement(parser, block, &expr, false)) {
3745 /* parseerror(parser, "parse error"); */
3751 if (!ast_block_add_expr(block, expr)) {
3758 if (parser->tok != '}') {
3761 (void)parser_next(parser);
3765 if (!parser_leaveblock(parser))
3767 return retval && !!block;
3770 static ast_block* parse_block(parser_t *parser)
3773 block = ast_block_new(parser_ctx(parser));
3776 if (!parse_block_into(parser, block)) {
3777 ast_block_delete(block);
3783 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3785 if (parser->tok == '{') {
3786 *out = (ast_expression*)parse_block(parser);
3789 return parse_statement(parser, NULL, out, false);
3792 static bool create_vector_members(ast_value *var, ast_member **me)
3795 size_t len = strlen(var->name);
3797 for (i = 0; i < 3; ++i) {
3798 char *name = (char*)mem_a(len+3);
3799 memcpy(name, var->name, len);
3801 name[len+1] = 'x'+i;
3803 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3812 do { ast_member_delete(me[--i]); } while(i);
3816 static bool parse_function_body(parser_t *parser, ast_value *var)
3818 ast_block *block = NULL;
3823 ast_expression *framenum = NULL;
3824 ast_expression *nextthink = NULL;
3825 /* None of the following have to be deleted */
3826 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3827 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3828 bool has_frame_think;
3832 has_frame_think = false;
3833 old = parser->function;
3835 if (var->expression.flags & AST_FLAG_ALIAS) {
3836 parseerror(parser, "function aliases cannot have bodies");
3840 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3841 parseerror(parser, "gotos/labels leaking");
3845 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
3846 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3847 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
3853 if (parser->tok == '[') {
3854 /* got a frame definition: [ framenum, nextthink ]
3855 * this translates to:
3856 * self.frame = framenum;
3857 * self.nextthink = time + 0.1;
3858 * self.think = nextthink;
3862 fld_think = parser_find_field(parser, "think");
3863 fld_nextthink = parser_find_field(parser, "nextthink");
3864 fld_frame = parser_find_field(parser, "frame");
3865 if (!fld_think || !fld_nextthink || !fld_frame) {
3866 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3867 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3870 gbl_time = parser_find_global(parser, "time");
3871 gbl_self = parser_find_global(parser, "self");
3872 if (!gbl_time || !gbl_self) {
3873 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3874 parseerror(parser, "please declare the following globals: `time`, `self`");
3878 if (!parser_next(parser))
3881 framenum = parse_expression_leave(parser, true, false, false);
3883 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3886 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3887 ast_unref(framenum);
3888 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3892 if (parser->tok != ',') {
3893 ast_unref(framenum);
3894 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3895 parseerror(parser, "Got a %i\n", parser->tok);
3899 if (!parser_next(parser)) {
3900 ast_unref(framenum);
3904 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3906 /* qc allows the use of not-yet-declared functions here
3907 * - this automatically creates a prototype */
3908 ast_value *thinkfunc;
3909 ast_expression *functype = fld_think->next;
3911 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
3912 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
3913 ast_unref(framenum);
3914 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3917 ast_type_adopt(thinkfunc, functype);
3919 if (!parser_next(parser)) {
3920 ast_unref(framenum);
3921 ast_delete(thinkfunc);
3925 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3927 nextthink = (ast_expression*)thinkfunc;
3930 nextthink = parse_expression_leave(parser, true, false, false);
3932 ast_unref(framenum);
3933 parseerror(parser, "expected a think-function in [frame,think] notation");
3938 if (!ast_istype(nextthink, ast_value)) {
3939 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3943 if (retval && parser->tok != ']') {
3944 parseerror(parser, "expected closing `]` for [frame,think] notation");
3948 if (retval && !parser_next(parser)) {
3952 if (retval && parser->tok != '{') {
3953 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3958 ast_unref(nextthink);
3959 ast_unref(framenum);
3963 has_frame_think = true;
3966 block = ast_block_new(parser_ctx(parser));
3968 parseerror(parser, "failed to allocate block");
3969 if (has_frame_think) {
3970 ast_unref(nextthink);
3971 ast_unref(framenum);
3976 if (has_frame_think) {
3978 ast_expression *self_frame;
3979 ast_expression *self_nextthink;
3980 ast_expression *self_think;
3981 ast_expression *time_plus_1;
3982 ast_store *store_frame;
3983 ast_store *store_nextthink;
3984 ast_store *store_think;
3986 ctx = parser_ctx(parser);
3987 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3988 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3989 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3991 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3992 gbl_time, (ast_expression*)fold_constgen_float(parser->fold, 0.1f));
3994 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3995 if (self_frame) ast_delete(self_frame);
3996 if (self_nextthink) ast_delete(self_nextthink);
3997 if (self_think) ast_delete(self_think);
3998 if (time_plus_1) ast_delete(time_plus_1);
4004 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
4005 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
4006 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
4009 ast_delete(self_frame);
4012 if (!store_nextthink) {
4013 ast_delete(self_nextthink);
4017 ast_delete(self_think);
4021 if (store_frame) ast_delete(store_frame);
4022 if (store_nextthink) ast_delete(store_nextthink);
4023 if (store_think) ast_delete(store_think);
4026 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
4027 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
4028 !ast_block_add_expr(block, (ast_expression*)store_think))
4035 parseerror(parser, "failed to generate code for [frame,think]");
4036 ast_unref(nextthink);
4037 ast_unref(framenum);
4043 if (var->hasvalue) {
4044 if (!(var->expression.flags & AST_FLAG_ACCUMULATE)) {
4045 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
4046 ast_block_delete(block);
4049 func = var->constval.vfunc;
4052 parseerror(parser, "internal error: NULL function: `%s`", var->name);
4053 ast_block_delete(block);
4057 func = ast_function_new(ast_ctx(var), var->name, var);
4060 parseerror(parser, "failed to allocate function for `%s`", var->name);
4061 ast_block_delete(block);
4064 vec_push(parser->functions, func);
4067 parser_enterblock(parser);
4069 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
4071 ast_value *param = var->expression.params[parami];
4074 if (param->expression.vtype != TYPE_VECTOR &&
4075 (param->expression.vtype != TYPE_FIELD ||
4076 param->expression.next->vtype != TYPE_VECTOR))
4081 if (!create_vector_members(param, me)) {
4082 ast_block_delete(block);
4086 for (e = 0; e < 3; ++e) {
4087 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4088 ast_block_collect(block, (ast_expression*)me[e]);
4092 if (var->argcounter && !func->argc) {
4093 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4094 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4098 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC && !func->varargs) {
4100 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4101 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4102 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4103 varargs->expression.count = 0;
4104 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4105 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4106 ast_delete(varargs);
4107 ast_block_delete(block);
4110 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4111 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4112 ast_delete(varargs);
4113 ast_block_delete(block);
4116 func->varargs = varargs;
4117 func->fixedparams = (ast_value*)fold_constgen_float(parser->fold, vec_size(var->expression.params));
4120 parser->function = func;
4121 if (!parse_block_into(parser, block)) {
4122 ast_block_delete(block);
4126 vec_push(func->blocks, block);
4128 parser->function = old;
4129 if (!parser_leaveblock(parser))
4131 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4132 parseerror(parser, "internal error: local scopes left");
4136 if (parser->tok == ';')
4137 return parser_next(parser);
4138 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4139 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4143 (void)!parser_leaveblock(parser);
4144 vec_pop(parser->functions);
4145 ast_function_delete(func);
4146 var->constval.vfunc = NULL;
4149 parser->function = old;
4153 static ast_expression *array_accessor_split(
4158 ast_expression *left,
4159 ast_expression *right
4165 lex_ctx_t ctx = ast_ctx(array);
4167 if (!left || !right) {
4168 if (left) ast_delete(left);
4169 if (right) ast_delete(right);
4173 cmp = ast_binary_new(ctx, INSTR_LT,
4174 (ast_expression*)index,
4175 (ast_expression*)fold_constgen_float(parser->fold, middle));
4179 parseerror(parser, "internal error: failed to create comparison for array setter");
4183 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4185 ast_delete(cmp); /* will delete left and right */
4186 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4190 return (ast_expression*)ifthen;
4193 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4195 lex_ctx_t ctx = ast_ctx(array);
4197 if (from+1 == afterend) {
4198 /* set this value */
4201 ast_array_index *subscript;
4203 int assignop = type_store_instr[value->expression.vtype];
4205 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4206 assignop = INSTR_STORE_V;
4208 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4212 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4214 ast_delete(subscript);
4218 block = ast_block_new(ctx);
4224 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4229 ret = ast_return_new(ctx, NULL);
4235 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4240 return (ast_expression*)block;
4242 ast_expression *left, *right;
4243 size_t diff = afterend - from;
4244 size_t middle = from + diff/2;
4245 left = array_setter_node(parser, array, index, value, from, middle);
4246 right = array_setter_node(parser, array, index, value, middle, afterend);
4247 return array_accessor_split(parser, array, index, middle, left, right);
4251 static ast_expression *array_field_setter_node(
4260 lex_ctx_t ctx = ast_ctx(array);
4262 if (from+1 == afterend) {
4263 /* set this value */
4266 ast_entfield *entfield;
4267 ast_array_index *subscript;
4269 int assignop = type_storep_instr[value->expression.vtype];
4271 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4272 assignop = INSTR_STOREP_V;
4274 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4278 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4279 subscript->expression.vtype = TYPE_FIELD;
4281 entfield = ast_entfield_new_force(ctx,
4282 (ast_expression*)entity,
4283 (ast_expression*)subscript,
4284 (ast_expression*)subscript);
4286 ast_delete(subscript);
4290 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4292 ast_delete(entfield);
4296 block = ast_block_new(ctx);
4302 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4307 ret = ast_return_new(ctx, NULL);
4313 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4318 return (ast_expression*)block;
4320 ast_expression *left, *right;
4321 size_t diff = afterend - from;
4322 size_t middle = from + diff/2;
4323 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4324 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4325 return array_accessor_split(parser, array, index, middle, left, right);
4329 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4331 lex_ctx_t ctx = ast_ctx(array);
4333 if (from+1 == afterend) {
4335 ast_array_index *subscript;
4337 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4341 ret = ast_return_new(ctx, (ast_expression*)subscript);
4343 ast_delete(subscript);
4347 return (ast_expression*)ret;
4349 ast_expression *left, *right;
4350 size_t diff = afterend - from;
4351 size_t middle = from + diff/2;
4352 left = array_getter_node(parser, array, index, from, middle);
4353 right = array_getter_node(parser, array, index, middle, afterend);
4354 return array_accessor_split(parser, array, index, middle, left, right);
4358 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4360 ast_function *func = NULL;
4361 ast_value *fval = NULL;
4362 ast_block *body = NULL;
4364 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4366 parseerror(parser, "failed to create accessor function value");
4370 func = ast_function_new(ast_ctx(array), funcname, fval);
4373 parseerror(parser, "failed to create accessor function node");
4377 body = ast_block_new(ast_ctx(array));
4379 parseerror(parser, "failed to create block for array accessor");
4385 vec_push(func->blocks, body);
4388 vec_push(parser->accessors, fval);
4393 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4395 ast_value *index = NULL;
4396 ast_value *value = NULL;
4400 if (!ast_istype(array->expression.next, ast_value)) {
4401 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4405 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4407 func = fval->constval.vfunc;
4408 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4410 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4411 value = ast_value_copy((ast_value*)array->expression.next);
4413 if (!index || !value) {
4414 parseerror(parser, "failed to create locals for array accessor");
4417 (void)!ast_value_set_name(value, "value"); /* not important */
4418 vec_push(fval->expression.params, index);
4419 vec_push(fval->expression.params, value);
4421 array->setter = fval;
4424 if (index) ast_delete(index);
4425 if (value) ast_delete(value);
4431 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4433 ast_expression *root = NULL;
4434 root = array_setter_node(parser, array,
4435 array->setter->expression.params[0],
4436 array->setter->expression.params[1],
4437 0, array->expression.count);
4439 parseerror(parser, "failed to build accessor search tree");
4442 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4449 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4451 if (!parser_create_array_setter_proto(parser, array, funcname))
4453 return parser_create_array_setter_impl(parser, array);
4456 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4458 ast_expression *root = NULL;
4459 ast_value *entity = NULL;
4460 ast_value *index = NULL;
4461 ast_value *value = NULL;
4465 if (!ast_istype(array->expression.next, ast_value)) {
4466 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4470 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4472 func = fval->constval.vfunc;
4473 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4475 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4476 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4477 value = ast_value_copy((ast_value*)array->expression.next);
4478 if (!entity || !index || !value) {
4479 parseerror(parser, "failed to create locals for array accessor");
4482 (void)!ast_value_set_name(value, "value"); /* not important */
4483 vec_push(fval->expression.params, entity);
4484 vec_push(fval->expression.params, index);
4485 vec_push(fval->expression.params, value);
4487 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4489 parseerror(parser, "failed to build accessor search tree");
4493 array->setter = fval;
4494 return ast_block_add_expr(func->blocks[0], root);
4496 if (entity) ast_delete(entity);
4497 if (index) ast_delete(index);
4498 if (value) ast_delete(value);
4499 if (root) ast_delete(root);
4505 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4507 ast_value *index = NULL;
4511 /* NOTE: checking array->expression.next rather than elemtype since
4512 * for fields elemtype is a temporary fieldtype.
4514 if (!ast_istype(array->expression.next, ast_value)) {
4515 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4519 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4521 func = fval->constval.vfunc;
4522 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4524 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4527 parseerror(parser, "failed to create locals for array accessor");
4530 vec_push(fval->expression.params, index);
4532 array->getter = fval;
4535 if (index) ast_delete(index);
4541 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4543 ast_expression *root = NULL;
4545 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4547 parseerror(parser, "failed to build accessor search tree");
4550 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4557 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4559 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4561 return parser_create_array_getter_impl(parser, array);
4564 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4572 bool variadic = false;
4573 ast_value *varparam = NULL;
4574 char *argcounter = NULL;
4576 ctx = parser_ctx(parser);
4578 /* for the sake of less code we parse-in in this function */
4579 if (!parser_next(parser)) {
4581 parseerror(parser, "expected parameter list");
4587 /* parse variables until we hit a closing paren */
4588 while (parser->tok != ')') {
4589 bool is_varargs = false;
4592 /* there must be commas between them */
4593 if (parser->tok != ',') {
4594 parseerror(parser, "expected comma or end of parameter list");
4597 if (!parser_next(parser)) {
4598 parseerror(parser, "expected parameter");
4604 param = parse_typename(parser, NULL, NULL, &is_varargs);
4605 if (!param && !is_varargs)
4608 /* '...' indicates a varargs function */
4610 if (parser->tok != ')' && parser->tok != TOKEN_IDENT) {
4611 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4614 if (parser->tok == TOKEN_IDENT) {
4615 argcounter = util_strdup(parser_tokval(parser));
4616 if (!parser_next(parser) || parser->tok != ')') {
4617 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4622 vec_push(params, param);
4623 if (param->expression.vtype >= TYPE_VARIANT) {
4624 char tname[1024]; /* typename is reserved in C++ */
4625 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4626 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4629 /* type-restricted varargs */
4630 if (parser->tok == TOKEN_DOTS) {
4632 varparam = vec_last(params);
4634 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4635 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4638 if (parser->tok == TOKEN_IDENT) {
4639 argcounter = util_strdup(parser_tokval(parser));
4640 if (!parser_next(parser) || parser->tok != ')') {
4641 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4649 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4653 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4654 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4657 if (!parser_next(parser)) {
4658 parseerror(parser, "parse error after typename");
4662 /* now turn 'var' into a function type */
4663 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4664 fval->expression.next = (ast_expression*)var;
4666 fval->expression.flags |= AST_FLAG_VARIADIC;
4669 var->expression.params = params;
4670 var->expression.varparam = (ast_expression*)varparam;
4671 var->argcounter = argcounter;
4680 ast_delete(varparam);
4682 for (i = 0; i < vec_size(params); ++i)
4683 ast_delete(params[i]);
4688 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4690 ast_expression *cexp;
4691 ast_value *cval, *tmp;
4694 ctx = parser_ctx(parser);
4696 if (!parser_next(parser)) {
4698 parseerror(parser, "expected array-size");
4702 if (parser->tok != ']') {
4703 cexp = parse_expression_leave(parser, true, false, false);
4705 if (!cexp || !ast_istype(cexp, ast_value)) {
4709 parseerror(parser, "expected array-size as constant positive integer");
4712 cval = (ast_value*)cexp;
4719 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4720 tmp->expression.next = (ast_expression*)var;
4724 if (cval->expression.vtype == TYPE_INTEGER)
4725 tmp->expression.count = cval->constval.vint;
4726 else if (cval->expression.vtype == TYPE_FLOAT)
4727 tmp->expression.count = cval->constval.vfloat;
4731 parseerror(parser, "array-size must be a positive integer constant");
4737 var->expression.count = -1;
4738 var->expression.flags |= AST_FLAG_ARRAY_INIT;
4741 if (parser->tok != ']') {
4743 parseerror(parser, "expected ']' after array-size");
4746 if (!parser_next(parser)) {
4748 parseerror(parser, "error after parsing array size");
4754 /* Parse a complete typename.
4755 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4756 * but when parsing variables separated by comma
4757 * 'storebase' should point to where the base-type should be kept.
4758 * The base type makes up every bit of type information which comes *before* the
4761 * NOTE: The value must either be named, have a NULL name, or a name starting
4762 * with '<'. In the first case, this will be the actual variable or type
4763 * name, in the other cases it is assumed that the name will appear
4764 * later, and an error is generated otherwise.
4766 * The following will be parsed in its entirety:
4768 * The 'basetype' in this case is 'void()'
4769 * and if there's a comma after it, say:
4771 * then the type-information 'void()' can be stored in 'storebase'
4773 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef, bool *is_vararg)
4775 ast_value *var, *tmp;
4778 const char *name = NULL;
4779 bool isfield = false;
4780 bool wasarray = false;
4781 size_t morefields = 0;
4783 bool vararg = (parser->tok == TOKEN_DOTS);
4785 ctx = parser_ctx(parser);
4787 /* types may start with a dot */
4788 if (parser->tok == '.' || parser->tok == TOKEN_DOTS) {
4790 if (parser->tok == TOKEN_DOTS)
4792 /* if we parsed a dot we need a typename now */
4793 if (!parser_next(parser)) {
4794 parseerror(parser, "expected typename for field definition");
4798 /* Further dots are handled seperately because they won't be part of the
4802 if (parser->tok == '.')
4804 else if (parser->tok == TOKEN_DOTS)
4809 if (!parser_next(parser)) {
4810 parseerror(parser, "expected typename for field definition");
4815 if (parser->tok == TOKEN_IDENT)
4816 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4817 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4818 if (vararg && is_vararg) {
4822 parseerror(parser, "expected typename");
4826 /* generate the basic type value */
4827 if (cached_typedef) {
4828 var = ast_value_copy(cached_typedef);
4829 ast_value_set_name(var, "<type(from_def)>");
4831 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4833 for (; morefields; --morefields) {
4834 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4835 tmp->expression.next = (ast_expression*)var;
4839 /* do not yet turn into a field - remember:
4840 * .void() foo; is a field too
4841 * .void()() foo; is a function
4845 if (!parser_next(parser)) {
4847 parseerror(parser, "parse error after typename");
4851 /* an opening paren now starts the parameter-list of a function
4852 * this is where original-QC has parameter lists.
4853 * We allow a single parameter list here.
4854 * Much like fteqcc we don't allow `float()() x`
4856 if (parser->tok == '(') {
4857 var = parse_parameter_list(parser, var);
4862 /* store the base if requested */
4864 *storebase = ast_value_copy(var);
4866 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4867 tmp->expression.next = (ast_expression*)*storebase;
4872 /* there may be a name now */
4873 if (parser->tok == TOKEN_IDENT || parser->tok == TOKEN_KEYWORD) {
4874 if (!strcmp(parser_tokval(parser), "break"))
4875 (void)!parsewarning(parser, WARN_BREAKDEF, "break definition ignored (suggest removing it)");
4876 else if (parser->tok == TOKEN_KEYWORD)
4879 name = util_strdup(parser_tokval(parser));
4882 if (!parser_next(parser)) {
4885 parseerror(parser, "error after variable or field declaration");
4891 /* now this may be an array */
4892 if (parser->tok == '[') {
4894 var = parse_arraysize(parser, var);
4896 if (name) mem_d(name);
4901 /* This is the point where we can turn it into a field */
4903 /* turn it into a field if desired */
4904 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4905 tmp->expression.next = (ast_expression*)var;
4909 /* now there may be function parens again */
4910 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4911 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4912 if (parser->tok == '(' && wasarray)
4913 parseerror(parser, "arrays as part of a return type is not supported");
4914 while (parser->tok == '(') {
4915 var = parse_parameter_list(parser, var);
4917 if (name) mem_d(name);
4922 /* finally name it */
4924 if (!ast_value_set_name(var, name)) {
4927 parseerror(parser, "internal error: failed to set name");
4930 /* free the name, ast_value_set_name duplicates */
4937 static bool parse_typedef(parser_t *parser)
4939 ast_value *typevar, *oldtype;
4940 ast_expression *old;
4942 typevar = parse_typename(parser, NULL, NULL, NULL);
4947 /* while parsing types, the ast_value's get named '<something>' */
4948 if (!typevar->name || typevar->name[0] == '<') {
4949 parseerror(parser, "missing name in typedef");
4950 ast_delete(typevar);
4954 if ( (old = parser_find_var(parser, typevar->name)) ) {
4955 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4956 " -> `%s` has been declared here: %s:%i",
4957 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4958 ast_delete(typevar);
4962 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4963 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4964 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4965 ast_delete(typevar);
4969 vec_push(parser->_typedefs, typevar);
4970 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4972 if (parser->tok != ';') {
4973 parseerror(parser, "expected semicolon after typedef");
4976 if (!parser_next(parser)) {
4977 parseerror(parser, "parse error after typedef");
4984 static const char *cvq_to_str(int cvq) {
4986 case CV_NONE: return "none";
4987 case CV_VAR: return "`var`";
4988 case CV_CONST: return "`const`";
4989 default: return "<INVALID>";
4993 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4996 if (proto->cvq != var->cvq) {
4997 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4998 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4999 parser->tok == '='))
5001 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
5002 "`%s` declared with different qualifiers: %s\n"
5003 " -> previous declaration here: %s:%i uses %s",
5004 var->name, cvq_to_str(var->cvq),
5005 ast_ctx(proto).file, ast_ctx(proto).line,
5006 cvq_to_str(proto->cvq));
5009 av = (var ->expression.flags & AST_FLAG_NORETURN);
5010 ao = (proto->expression.flags & AST_FLAG_NORETURN);
5012 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
5013 "`%s` declared with different attributes%s\n"
5014 " -> previous declaration here: %s:%i",
5015 var->name, (av ? ": noreturn" : ""),
5016 ast_ctx(proto).file, ast_ctx(proto).line,
5017 (ao ? ": noreturn" : ""));
5022 static bool create_array_accessors(parser_t *parser, ast_value *var)
5025 util_snprintf(name, sizeof(name), "%s##SET", var->name);
5026 if (!parser_create_array_setter(parser, var, name))
5028 util_snprintf(name, sizeof(name), "%s##GET", var->name);
5029 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5034 static bool parse_array(parser_t *parser, ast_value *array)
5037 if (array->initlist) {
5038 parseerror(parser, "array already initialized elsewhere");
5041 if (!parser_next(parser)) {
5042 parseerror(parser, "parse error in array initializer");
5046 while (parser->tok != '}') {
5047 ast_value *v = (ast_value*)parse_expression_leave(parser, true, false, false);
5050 if (!ast_istype(v, ast_value) || !v->hasvalue || v->cvq != CV_CONST) {
5052 parseerror(parser, "initializing element must be a compile time constant");
5055 vec_push(array->initlist, v->constval);
5056 if (v->expression.vtype == TYPE_STRING) {
5057 array->initlist[i].vstring = util_strdupe(array->initlist[i].vstring);
5061 if (parser->tok == '}')
5063 if (parser->tok != ',' || !parser_next(parser)) {
5064 parseerror(parser, "expected comma or '}' in element list");
5068 if (!parser_next(parser) || parser->tok != ';') {
5069 parseerror(parser, "expected semicolon after initializer, got %s");
5073 if (!parser_next(parser)) {
5074 parseerror(parser, "parse error after initializer");
5079 if (array->expression.flags & AST_FLAG_ARRAY_INIT) {
5080 if (array->expression.count != (size_t)-1) {
5081 parseerror(parser, "array `%s' has already been initialized with %u elements",
5082 array->name, (unsigned)array->expression.count);
5084 array->expression.count = vec_size(array->initlist);
5085 if (!create_array_accessors(parser, array))
5091 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)
5095 ast_expression *old;
5099 ast_value *basetype = NULL;
5101 bool isparam = false;
5102 bool isvector = false;
5103 bool cleanvar = true;
5104 bool wasarray = false;
5106 ast_member *me[3] = { NULL, NULL, NULL };
5108 if (!localblock && is_static)
5109 parseerror(parser, "`static` qualifier is not supported in global scope");
5111 /* get the first complete variable */
5112 var = parse_typename(parser, &basetype, cached_typedef, NULL);
5115 ast_delete(basetype);
5119 /* while parsing types, the ast_value's get named '<something>' */
5120 if (!var->name || var->name[0] == '<') {
5121 parseerror(parser, "declaration does not declare anything");
5123 ast_delete(basetype);
5131 /* Part 0: finish the type */
5132 if (parser->tok == '(') {
5133 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5134 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5135 var = parse_parameter_list(parser, var);
5141 /* we only allow 1-dimensional arrays */
5142 if (parser->tok == '[') {
5144 var = parse_arraysize(parser, var);
5150 if (parser->tok == '(' && wasarray) {
5151 parseerror(parser, "arrays as part of a return type is not supported");
5152 /* we'll still parse the type completely for now */
5154 /* for functions returning functions */
5155 while (parser->tok == '(') {
5156 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5157 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5158 var = parse_parameter_list(parser, var);
5165 var->cvq = qualifier;
5166 var->expression.flags |= qflags;
5169 * store the vstring back to var for alias and
5170 * deprecation messages.
5172 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5173 var->expression.flags & AST_FLAG_ALIAS)
5174 var->desc = vstring;
5176 if (parser_find_global(parser, var->name) && var->expression.flags & AST_FLAG_ALIAS) {
5177 parseerror(parser, "function aliases cannot be forward declared");
5184 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5185 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5186 * is then filled with the previous definition and the parameter-names replaced.
5188 if (!strcmp(var->name, "nil")) {
5189 if (OPTS_FLAG(UNTYPED_NIL)) {
5190 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5191 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5193 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5196 /* Deal with end_sys_ vars */
5198 if (!strcmp(var->name, "end_sys_globals")) {
5200 parser->crc_globals = vec_size(parser->globals);
5203 else if (!strcmp(var->name, "end_sys_fields")) {
5205 parser->crc_fields = vec_size(parser->fields);
5208 if (was_end && var->expression.vtype == TYPE_FIELD) {
5209 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5210 "global '%s' hint should not be a field",
5211 parser_tokval(parser)))
5218 if (!nofields && var->expression.vtype == TYPE_FIELD)
5220 /* deal with field declarations */
5221 old = parser_find_field(parser, var->name);
5223 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5224 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5233 parseerror(parser, "field `%s` already declared here: %s:%i",
5234 var->name, ast_ctx(old).file, ast_ctx(old).line);
5239 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5240 (old = parser_find_global(parser, var->name)))
5242 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5243 parseerror(parser, "field `%s` already declared here: %s:%i",
5244 var->name, ast_ctx(old).file, ast_ctx(old).line);
5251 /* deal with other globals */
5252 old = parser_find_global(parser, var->name);
5253 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5255 /* This is a function which had a prototype */
5256 if (!ast_istype(old, ast_value)) {
5257 parseerror(parser, "internal error: prototype is not an ast_value");
5261 proto = (ast_value*)old;
5262 proto->desc = var->desc;
5263 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5264 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5266 ast_ctx(proto).file, ast_ctx(proto).line);
5270 /* we need the new parameter-names */
5271 for (i = 0; i < vec_size(proto->expression.params); ++i)
5272 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5273 if (!parser_check_qualifiers(parser, var, proto)) {
5280 proto->expression.flags |= var->expression.flags;
5288 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5289 "global `%s` already declared here: %s:%i",
5290 var->name, ast_ctx(old).file, ast_ctx(old).line))
5295 if (old->flags & AST_FLAG_FINAL_DECL) {
5296 parseerror(parser, "cannot redeclare variable `%s`, declared final here: %s:%i",
5297 var->name, ast_ctx(old).file, ast_ctx(old).line);
5301 proto = (ast_value*)old;
5302 if (!ast_istype(old, ast_value)) {
5303 parseerror(parser, "internal error: not an ast_value");
5308 if (!parser_check_qualifiers(parser, var, proto)) {
5313 proto->expression.flags |= var->expression.flags;
5314 /* copy the context for finals,
5315 * so the error can show where it was actually made 'final'
5317 if (proto->expression.flags & AST_FLAG_FINAL_DECL)
5318 ast_ctx(old) = ast_ctx(var);
5322 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5323 (old = parser_find_field(parser, var->name)))
5325 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5326 parseerror(parser, "global `%s` already declared here: %s:%i",
5327 var->name, ast_ctx(old).file, ast_ctx(old).line);
5334 else /* it's not a global */
5336 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5337 if (old && !isparam) {
5338 parseerror(parser, "local `%s` already declared here: %s:%i",
5339 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5343 /* doing this here as the above is just for a single scope */
5344 old = parser_find_local(parser, var->name, 0, &isparam);
5345 if (old && isparam) {
5346 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5347 "local `%s` is shadowing a parameter", var->name))
5349 parseerror(parser, "local `%s` already declared here: %s:%i",
5350 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5354 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5356 if (ast_istype(old, ast_value))
5357 var = proto = (ast_value*)old;
5366 /* in a noref section we simply bump the usecount */
5367 if (noref || parser->noref)
5371 * Create the global/local, and deal with vector types.
5374 if (var->expression.vtype == TYPE_VECTOR)
5376 else if (var->expression.vtype == TYPE_FIELD &&
5377 var->expression.next->vtype == TYPE_VECTOR)
5381 if (!create_vector_members(var, me)) {
5388 /* deal with global variables, fields, functions */
5389 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5390 var->isfield = true;
5391 vec_push(parser->fields, (ast_expression*)var);
5392 util_htset(parser->htfields, var->name, var);
5394 for (i = 0; i < 3; ++i) {
5395 vec_push(parser->fields, (ast_expression*)me[i]);
5396 util_htset(parser->htfields, me[i]->name, me[i]);
5401 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5402 parser_addglobal(parser, var->name, (ast_expression*)var);
5404 for (i = 0; i < 3; ++i) {
5405 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5409 ast_expression *find = parser_find_global(parser, var->desc);
5412 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5416 if (!ast_compare_type((ast_expression*)var, find)) {
5420 ast_type_to_string(find, ty1, sizeof(ty1));
5421 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5423 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5430 * add alias to aliases table and to corrector
5431 * so corrections can apply for aliases as well.
5433 util_htset(parser->aliases, var->name, find);
5436 * add to corrector so corrections can work
5437 * even for aliases too.
5440 vec_last(parser->correct_variables),
5441 &vec_last(parser->correct_variables_score),
5445 /* generate aliases for vector components */
5449 util_asprintf(&buffer[0], "%s_x", var->desc);
5450 util_asprintf(&buffer[1], "%s_y", var->desc);
5451 util_asprintf(&buffer[2], "%s_z", var->desc);
5453 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5454 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5455 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5462 * add to corrector so corrections can work
5463 * even for aliases too.
5466 vec_last(parser->correct_variables),
5467 &vec_last(parser->correct_variables_score),
5471 vec_last(parser->correct_variables),
5472 &vec_last(parser->correct_variables_score),
5476 vec_last(parser->correct_variables),
5477 &vec_last(parser->correct_variables_score),
5485 /* a static adds itself to be generated like any other global
5486 * but is added to the local namespace instead
5488 char *defname = NULL;
5489 size_t prefix_len, ln;
5492 ln = strlen(parser->function->name);
5493 vec_append(defname, ln, parser->function->name);
5495 vec_append(defname, 2, "::");
5496 /* remember the length up to here */
5497 prefix_len = vec_size(defname);
5499 /* Add it to the local scope */
5500 util_htset(vec_last(parser->variables), var->name, (void*)var);
5504 vec_last(parser->correct_variables),
5505 &vec_last(parser->correct_variables_score),
5509 /* now rename the global */
5510 ln = strlen(var->name);
5511 vec_append(defname, ln, var->name);
5512 /* if a variable of that name already existed, add the
5514 * The counter is incremented either way.
5516 sn_size = vec_size(parser->function->static_names);
5517 for (sn = 0; sn != sn_size; ++sn) {
5518 if (strcmp(parser->function->static_names[sn], var->name) == 0)
5521 if (sn != sn_size) {
5523 int len = util_asprintf(&num, "#%u", parser->function->static_count);
5524 vec_append(defname, len, num);
5528 vec_push(parser->function->static_names, util_strdup(var->name));
5529 parser->function->static_count++;
5530 ast_value_set_name(var, defname);
5532 /* push it to the to-be-generated globals */
5533 vec_push(parser->globals, (ast_expression*)var);
5535 /* same game for the vector members */
5537 for (i = 0; i < 3; ++i) {
5538 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5542 vec_last(parser->correct_variables),
5543 &vec_last(parser->correct_variables_score),
5547 vec_shrinkto(defname, prefix_len);
5548 ln = strlen(me[i]->name);
5549 vec_append(defname, ln, me[i]->name);
5550 ast_member_set_name(me[i], defname);
5552 vec_push(parser->globals, (ast_expression*)me[i]);
5557 vec_push(localblock->locals, var);
5558 parser_addlocal(parser, var->name, (ast_expression*)var);
5560 for (i = 0; i < 3; ++i) {
5561 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5562 ast_block_collect(localblock, (ast_expression*)me[i]);
5568 me[0] = me[1] = me[2] = NULL;
5573 if (var->expression.vtype == TYPE_ARRAY) {
5574 if (var->expression.count != (size_t)-1) {
5575 if (!create_array_accessors(parser, var))
5579 else if (!localblock && !nofields &&
5580 var->expression.vtype == TYPE_FIELD &&
5581 var->expression.next->vtype == TYPE_ARRAY)
5584 ast_expression *telem;
5586 ast_value *array = (ast_value*)var->expression.next;
5588 if (!ast_istype(var->expression.next, ast_value)) {
5589 parseerror(parser, "internal error: field element type must be an ast_value");
5593 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5594 if (!parser_create_array_field_setter(parser, array, name))
5597 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5598 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5599 tfield->expression.next = telem;
5600 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5601 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5609 if (parser->tok == ';') {
5610 ast_delete(basetype);
5611 if (!parser_next(parser)) {
5612 parseerror(parser, "error after variable declaration");
5618 if (parser->tok == ',')
5622 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5625 parseerror(parser, "missing comma or semicolon while parsing variables");
5629 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5630 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5631 "initializing expression turns variable `%s` into a constant in this standard",
5638 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5639 if (parser->tok != '=') {
5640 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5644 if (!parser_next(parser)) {
5645 parseerror(parser, "error parsing initializer");
5649 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5650 parseerror(parser, "expected '=' before function body in this standard");
5653 if (parser->tok == '#') {
5654 ast_function *func = NULL;
5655 ast_value *number = NULL;
5661 parseerror(parser, "cannot declare builtins within functions");
5664 if (var->expression.vtype != TYPE_FUNCTION) {
5665 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5668 if (!parser_next(parser)) {
5669 parseerror(parser, "expected builtin number");
5673 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5674 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5676 parseerror(parser, "builtin number expected");
5679 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5682 parseerror(parser, "builtin number must be a compile time constant");
5685 if (number->expression.vtype == TYPE_INTEGER)
5686 builtin_num = number->constval.vint;
5687 else if (number->expression.vtype == TYPE_FLOAT)
5688 builtin_num = number->constval.vfloat;
5691 parseerror(parser, "builtin number must be an integer constant");
5696 fractional = modff(builtin_num, &integral);
5697 if (builtin_num < 0 || fractional != 0) {
5698 parseerror(parser, "builtin number must be an integer greater than zero");
5702 /* we only want the integral part anyways */
5703 builtin_num = integral;
5704 } else if (parser->tok == TOKEN_INTCONST) {
5705 builtin_num = parser_token(parser)->constval.i;
5707 parseerror(parser, "builtin number must be a compile time constant");
5711 if (var->hasvalue) {
5712 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5713 "builtin `%s` has already been defined\n"
5714 " -> previous declaration here: %s:%i",
5715 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5719 func = ast_function_new(ast_ctx(var), var->name, var);
5721 parseerror(parser, "failed to allocate function for `%s`", var->name);
5724 vec_push(parser->functions, func);
5726 func->builtin = -builtin_num-1;
5729 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5730 ? (parser->tok != ',' && parser->tok != ';')
5731 : (!parser_next(parser)))
5733 parseerror(parser, "expected comma or semicolon");
5735 ast_function_delete(func);
5736 var->constval.vfunc = NULL;
5740 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
5743 /* Note that fteqcc and most others don't even *have*
5744 * local arrays, so this is not a high priority.
5746 parseerror(parser, "TODO: initializers for local arrays");
5750 var->hasvalue = true;
5751 if (!parse_array(parser, var))
5754 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
5757 parseerror(parser, "cannot declare functions within functions");
5762 ast_ctx(proto) = parser_ctx(parser);
5764 if (!parse_function_body(parser, var))
5766 ast_delete(basetype);
5767 for (i = 0; i < vec_size(parser->gotos); ++i)
5768 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5769 vec_free(parser->gotos);
5770 vec_free(parser->labels);
5773 ast_expression *cexp;
5776 cexp = parse_expression_leave(parser, true, false, false);
5780 if (!localblock || is_static) {
5781 cval = (ast_value*)cexp;
5782 if (cval != parser->nil &&
5783 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5786 parseerror(parser, "initializer is non constant");
5791 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5792 qualifier != CV_VAR)
5794 var->cvq = CV_CONST;
5796 if (cval == parser->nil)
5797 var->expression.flags |= AST_FLAG_INITIALIZED;
5800 var->hasvalue = true;
5801 if (cval->expression.vtype == TYPE_STRING)
5802 var->constval.vstring = parser_strdup(cval->constval.vstring);
5803 else if (cval->expression.vtype == TYPE_FIELD)
5804 var->constval.vfield = cval;
5806 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5812 shunt sy = { NULL, NULL, NULL, NULL };
5815 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5816 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5817 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5818 if (!parser_sy_apply_operator(parser, &sy))
5821 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5822 parseerror(parser, "internal error: leaked operands");
5823 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5834 if (parser->tok == ',') {
5835 if (!parser_next(parser)) {
5836 parseerror(parser, "expected another variable");
5840 if (parser->tok != TOKEN_IDENT) {
5841 parseerror(parser, "expected another variable");
5844 var = ast_value_copy(basetype);
5846 ast_value_set_name(var, parser_tokval(parser));
5847 if (!parser_next(parser)) {
5848 parseerror(parser, "error parsing variable declaration");
5854 if (parser->tok != ';') {
5855 parseerror(parser, "missing semicolon after variables");
5859 if (!parser_next(parser)) {
5860 parseerror(parser, "parse error after variable declaration");
5864 ast_delete(basetype);
5868 if (cleanvar && var)
5870 ast_delete(basetype);
5874 ast_delete(basetype);
5875 if (cleanvar && var)
5877 if (me[0]) ast_member_delete(me[0]);
5878 if (me[1]) ast_member_delete(me[1]);
5879 if (me[2]) ast_member_delete(me[2]);
5883 static bool parser_global_statement(parser_t *parser)
5887 bool is_static = false;
5888 uint32_t qflags = 0;
5889 ast_value *istype = NULL;
5890 char *vstring = NULL;
5892 if (parser->tok == TOKEN_IDENT)
5893 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5895 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.' || parser->tok == TOKEN_DOTS)
5897 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5899 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5901 if (cvq == CV_WRONG)
5903 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5905 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5907 return parse_enum(parser);
5909 else if (parser->tok == TOKEN_KEYWORD)
5911 if (!strcmp(parser_tokval(parser), "typedef")) {
5912 if (!parser_next(parser)) {
5913 parseerror(parser, "expected type definition after 'typedef'");
5916 return parse_typedef(parser);
5918 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5921 else if (parser->tok == '#')
5923 return parse_pragma(parser);
5925 else if (parser->tok == '$')
5927 if (!parser_next(parser)) {
5928 parseerror(parser, "parse error");
5934 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
5940 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5942 return util_crc16(old, str, strlen(str));
5945 static void progdefs_crc_file(const char *str)
5947 /* write to progdefs.h here */
5951 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5953 old = progdefs_crc_sum(old, str);
5954 progdefs_crc_file(str);
5958 static void generate_checksum(parser_t *parser, ir_builder *ir)
5960 uint16_t crc = 0xFFFF;
5964 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5965 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5967 progdefs_crc_file("\tint\tpad;\n");
5968 progdefs_crc_file("\tint\tofs_return[3];\n");
5969 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5970 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5971 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5972 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5973 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5974 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5975 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5976 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5978 for (i = 0; i < parser->crc_globals; ++i) {
5979 if (!ast_istype(parser->globals[i], ast_value))
5981 value = (ast_value*)(parser->globals[i]);
5982 switch (value->expression.vtype) {
5983 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5984 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5985 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5986 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5988 crc = progdefs_crc_both(crc, "\tint\t");
5991 crc = progdefs_crc_both(crc, value->name);
5992 crc = progdefs_crc_both(crc, ";\n");
5994 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5995 for (i = 0; i < parser->crc_fields; ++i) {
5996 if (!ast_istype(parser->fields[i], ast_value))
5998 value = (ast_value*)(parser->fields[i]);
5999 switch (value->expression.next->vtype) {
6000 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6001 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6002 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6003 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6005 crc = progdefs_crc_both(crc, "\tint\t");
6008 crc = progdefs_crc_both(crc, value->name);
6009 crc = progdefs_crc_both(crc, ";\n");
6011 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
6012 ir->code->crc = crc;
6015 parser_t *parser_create()
6018 lex_ctx_t empty_ctx;
6021 parser = (parser_t*)mem_a(sizeof(parser_t));
6025 memset(parser, 0, sizeof(*parser));
6027 for (i = 0; i < operator_count; ++i) {
6028 if (operators[i].id == opid1('=')) {
6029 parser->assign_op = operators+i;
6033 if (!parser->assign_op) {
6034 con_err("internal error: initializing parser: failed to find assign operator\n");
6039 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
6040 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
6041 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
6042 vec_push(parser->_blocktypedefs, 0);
6044 parser->aliases = util_htnew(PARSER_HT_SIZE);
6047 vec_push(parser->correct_variables, correct_trie_new());
6048 vec_push(parser->correct_variables_score, NULL);
6050 empty_ctx.file = "<internal>";
6052 empty_ctx.column = 0;
6053 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
6054 parser->nil->cvq = CV_CONST;
6055 if (OPTS_FLAG(UNTYPED_NIL))
6056 util_htset(parser->htglobals, "nil", (void*)parser->nil);
6058 parser->max_param_count = 1;
6060 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
6061 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
6062 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
6064 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
6065 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
6066 parser->reserved_version->cvq = CV_CONST;
6067 parser->reserved_version->hasvalue = true;
6068 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
6069 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
6071 parser->reserved_version = NULL;
6074 parser->fold = fold_init (parser);
6075 parser->intrin = intrin_init(parser);
6079 static bool parser_compile(parser_t *parser)
6081 /* initial lexer/parser state */
6082 parser->lex->flags.noops = true;
6084 if (parser_next(parser))
6086 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
6088 if (!parser_global_statement(parser)) {
6089 if (parser->tok == TOKEN_EOF)
6090 parseerror(parser, "unexpected end of file");
6091 else if (compile_errors)
6092 parseerror(parser, "there have been errors, bailing out");
6093 lex_close(parser->lex);
6099 parseerror(parser, "parse error");
6100 lex_close(parser->lex);
6105 lex_close(parser->lex);
6108 return !compile_errors;
6111 bool parser_compile_file(parser_t *parser, const char *filename)
6113 parser->lex = lex_open(filename);
6115 con_err("failed to open file \"%s\"\n", filename);
6118 return parser_compile(parser);
6121 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
6123 parser->lex = lex_open_string(str, len, name);
6125 con_err("failed to create lexer for string \"%s\"\n", name);
6128 return parser_compile(parser);
6131 static void parser_remove_ast(parser_t *parser)
6134 if (parser->ast_cleaned)
6136 parser->ast_cleaned = true;
6137 for (i = 0; i < vec_size(parser->accessors); ++i) {
6138 ast_delete(parser->accessors[i]->constval.vfunc);
6139 parser->accessors[i]->constval.vfunc = NULL;
6140 ast_delete(parser->accessors[i]);
6142 for (i = 0; i < vec_size(parser->functions); ++i) {
6143 ast_delete(parser->functions[i]);
6145 for (i = 0; i < vec_size(parser->fields); ++i) {
6146 ast_delete(parser->fields[i]);
6148 for (i = 0; i < vec_size(parser->globals); ++i) {
6149 ast_delete(parser->globals[i]);
6151 vec_free(parser->accessors);
6152 vec_free(parser->functions);
6153 vec_free(parser->globals);
6154 vec_free(parser->fields);
6156 for (i = 0; i < vec_size(parser->variables); ++i)
6157 util_htdel(parser->variables[i]);
6158 vec_free(parser->variables);
6159 vec_free(parser->_blocklocals);
6160 vec_free(parser->_locals);
6163 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
6164 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
6166 vec_free(parser->correct_variables);
6167 vec_free(parser->correct_variables_score);
6169 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6170 ast_delete(parser->_typedefs[i]);
6171 vec_free(parser->_typedefs);
6172 for (i = 0; i < vec_size(parser->typedefs); ++i)
6173 util_htdel(parser->typedefs[i]);
6174 vec_free(parser->typedefs);
6175 vec_free(parser->_blocktypedefs);
6177 vec_free(parser->_block_ctx);
6179 vec_free(parser->labels);
6180 vec_free(parser->gotos);
6181 vec_free(parser->breaks);
6182 vec_free(parser->continues);
6184 ast_value_delete(parser->nil);
6186 ast_value_delete(parser->const_vec[0]);
6187 ast_value_delete(parser->const_vec[1]);
6188 ast_value_delete(parser->const_vec[2]);
6190 if (parser->reserved_version)
6191 ast_value_delete(parser->reserved_version);
6193 util_htdel(parser->aliases);
6194 fold_cleanup(parser->fold);
6195 intrin_cleanup(parser->intrin);
6198 void parser_cleanup(parser_t *parser)
6200 parser_remove_ast(parser);
6204 bool parser_finish(parser_t *parser, const char *output)
6210 if (compile_errors) {
6211 con_out("*** there were compile errors\n");
6215 ir = ir_builder_new("gmqcc_out");
6217 con_out("failed to allocate builder\n");
6221 for (i = 0; i < vec_size(parser->fields); ++i) {
6224 if (!ast_istype(parser->fields[i], ast_value))
6226 field = (ast_value*)parser->fields[i];
6227 hasvalue = field->hasvalue;
6228 field->hasvalue = false;
6229 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6230 con_out("failed to generate field %s\n", field->name);
6231 ir_builder_delete(ir);
6236 ast_expression *subtype;
6237 field->hasvalue = true;
6238 subtype = field->expression.next;
6239 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6240 if (subtype->vtype == TYPE_FIELD)
6241 ifld->fieldtype = subtype->next->vtype;
6242 else if (subtype->vtype == TYPE_FUNCTION)
6243 ifld->outtype = subtype->next->vtype;
6244 (void)!ir_value_set_field(field->ir_v, ifld);
6247 for (i = 0; i < vec_size(parser->globals); ++i) {
6249 if (!ast_istype(parser->globals[i], ast_value))
6251 asvalue = (ast_value*)(parser->globals[i]);
6252 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6253 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6254 "unused global: `%s`", asvalue->name);
6256 if (!ast_global_codegen(asvalue, ir, false)) {
6257 con_out("failed to generate global %s\n", asvalue->name);
6258 ir_builder_delete(ir);
6262 /* Build function vararg accessor ast tree now before generating
6263 * immediates, because the accessors may add new immediates
6265 for (i = 0; i < vec_size(parser->functions); ++i) {
6266 ast_function *f = parser->functions[i];
6268 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6269 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6270 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6271 con_out("failed to generate vararg setter for %s\n", f->name);
6272 ir_builder_delete(ir);
6275 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6276 con_out("failed to generate vararg getter for %s\n", f->name);
6277 ir_builder_delete(ir);
6281 ast_delete(f->varargs);
6286 /* Now we can generate immediates */
6287 if (!fold_generate(parser->fold, ir))
6290 for (i = 0; i < vec_size(parser->globals); ++i) {
6292 if (!ast_istype(parser->globals[i], ast_value))
6294 asvalue = (ast_value*)(parser->globals[i]);
6295 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6297 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6298 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6299 "uninitialized constant: `%s`",
6301 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6302 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6303 "uninitialized global: `%s`",
6306 if (!ast_generate_accessors(asvalue, ir)) {
6307 ir_builder_delete(ir);
6311 for (i = 0; i < vec_size(parser->fields); ++i) {
6313 asvalue = (ast_value*)(parser->fields[i]->next);
6315 if (!ast_istype((ast_expression*)asvalue, ast_value))
6317 if (asvalue->expression.vtype != TYPE_ARRAY)
6319 if (!ast_generate_accessors(asvalue, ir)) {
6320 ir_builder_delete(ir);
6324 if (parser->reserved_version &&
6325 !ast_global_codegen(parser->reserved_version, ir, false))
6327 con_out("failed to generate reserved::version");
6328 ir_builder_delete(ir);
6331 for (i = 0; i < vec_size(parser->functions); ++i) {
6332 ast_function *f = parser->functions[i];
6333 if (!ast_function_codegen(f, ir)) {
6334 con_out("failed to generate function %s\n", f->name);
6335 ir_builder_delete(ir);
6340 generate_checksum(parser, ir);
6342 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6343 ir_builder_dump(ir, con_out);
6344 for (i = 0; i < vec_size(parser->functions); ++i) {
6345 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6346 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6347 ir_builder_delete(ir);
6351 parser_remove_ast(parser);
6353 if (compile_Werrors) {
6354 con_out("*** there were warnings treated as errors\n");
6355 compile_show_werrors();
6360 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6361 ir_builder_dump(ir, con_out);
6363 if (!ir_builder_generate(ir, output)) {
6364 con_out("*** failed to generate output file\n");
6365 ir_builder_delete(ir);
6369 ir_builder_delete(ir);