2 * Copyright (C) 2012, 2013, 2014, 2015
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 /* When we're a vector of part of an entity field we use STOREP */
957 if (ast_istype(exprs[0], ast_member) && ast_istype(((ast_member*)exprs[0])->owner, ast_entfield))
958 assignop = INSTR_STOREP_F;
959 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
961 case opid3('+','+','P'):
962 case opid3('-','-','P'):
964 if (exprs[0]->vtype != TYPE_FLOAT) {
965 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
966 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
969 if (op->id == opid3('+','+','P'))
973 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
974 if (ast_istype(exprs[0], ast_entfield)) {
975 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
977 (ast_expression*)parser->fold->imm_float[1]);
979 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
981 (ast_expression*)parser->fold->imm_float[1]);
984 case opid3('S','+','+'):
985 case opid3('S','-','-'):
987 if (exprs[0]->vtype != TYPE_FLOAT) {
988 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
989 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
992 if (op->id == opid3('S','+','+')) {
999 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
1000 if (ast_istype(exprs[0], ast_entfield)) {
1001 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1003 (ast_expression*)parser->fold->imm_float[1]);
1005 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1007 (ast_expression*)parser->fold->imm_float[1]);
1011 out = fold_binary(ctx, subop,
1013 (ast_expression*)parser->fold->imm_float[1]);
1016 case opid2('+','='):
1017 case opid2('-','='):
1018 if (exprs[0]->vtype != exprs[1]->vtype ||
1019 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
1021 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1022 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1023 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1027 (void)check_write_to(ctx, exprs[0]);
1028 if (ast_istype(exprs[0], ast_entfield))
1029 assignop = type_storep_instr[exprs[0]->vtype];
1031 assignop = type_store_instr[exprs[0]->vtype];
1032 switch (exprs[0]->vtype) {
1034 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1035 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1036 exprs[0], exprs[1]);
1039 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1040 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1041 exprs[0], exprs[1]);
1044 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1045 type_name[exprs[0]->vtype],
1046 type_name[exprs[1]->vtype]);
1050 case opid2('*','='):
1051 case opid2('/','='):
1052 if (exprs[1]->vtype != TYPE_FLOAT ||
1053 !(exprs[0]->vtype == TYPE_FLOAT ||
1054 exprs[0]->vtype == TYPE_VECTOR))
1056 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1057 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1058 compile_error(ctx, "invalid types used in expression: %s and %s",
1062 (void)check_write_to(ctx, exprs[0]);
1063 if (ast_istype(exprs[0], ast_entfield))
1064 assignop = type_storep_instr[exprs[0]->vtype];
1066 assignop = type_store_instr[exprs[0]->vtype];
1067 switch (exprs[0]->vtype) {
1069 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1070 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1071 exprs[0], exprs[1]);
1074 if (op->id == opid2('*','=')) {
1075 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1076 exprs[0], exprs[1]);
1078 out = fold_binary(ctx, INSTR_DIV_F,
1079 (ast_expression*)parser->fold->imm_float[1],
1082 compile_error(ctx, "internal error: failed to generate division");
1085 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1090 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1091 type_name[exprs[0]->vtype],
1092 type_name[exprs[1]->vtype]);
1096 case opid2('&','='):
1097 case opid2('|','='):
1098 case opid2('^','='):
1099 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1100 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1101 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1102 compile_error(ctx, "invalid types used in expression: %s and %s",
1106 (void)check_write_to(ctx, exprs[0]);
1107 if (ast_istype(exprs[0], ast_entfield))
1108 assignop = type_storep_instr[exprs[0]->vtype];
1110 assignop = type_store_instr[exprs[0]->vtype];
1111 if (exprs[0]->vtype == TYPE_FLOAT)
1112 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1113 (op->id == opid2('^','=') ? VINSTR_BITXOR : op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1114 exprs[0], exprs[1]);
1116 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1117 (op->id == opid2('^','=') ? VINSTR_BITXOR_V : op->id == opid2('&','=') ? VINSTR_BITAND_V : VINSTR_BITOR_V),
1118 exprs[0], exprs[1]);
1120 case opid3('&','~','='):
1121 /* This is like: a &= ~(b);
1122 * But QC has no bitwise-not, so we implement it as
1125 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1126 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1127 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1128 compile_error(ctx, "invalid types used in expression: %s and %s",
1132 if (ast_istype(exprs[0], ast_entfield))
1133 assignop = type_storep_instr[exprs[0]->vtype];
1135 assignop = type_store_instr[exprs[0]->vtype];
1136 if (exprs[0]->vtype == TYPE_FLOAT)
1137 out = fold_binary(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1139 out = fold_binary(ctx, VINSTR_BITAND_V, exprs[0], exprs[1]);
1142 (void)check_write_to(ctx, exprs[0]);
1143 if (exprs[0]->vtype == TYPE_FLOAT)
1144 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1146 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_V, exprs[0], out);
1147 asbinstore->keep_dest = true;
1148 out = (ast_expression*)asbinstore;
1151 case opid3('l', 'e', 'n'):
1152 if (exprs[0]->vtype != TYPE_STRING && exprs[0]->vtype != TYPE_ARRAY) {
1153 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1154 compile_error(ast_ctx(exprs[0]), "invalid type for length operator: %s", ty1);
1157 /* strings must be const, arrays are statically sized */
1158 if (exprs[0]->vtype == TYPE_STRING &&
1159 !(((ast_value*)exprs[0])->hasvalue && ((ast_value*)exprs[0])->cvq == CV_CONST))
1161 compile_error(ast_ctx(exprs[0]), "operand of length operator not a valid constant expression");
1164 out = fold_op(parser->fold, op, exprs);
1167 case opid2('~', 'P'):
1168 if (exprs[0]->vtype != TYPE_FLOAT && exprs[0]->vtype != TYPE_VECTOR) {
1169 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1170 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1173 if (!(out = fold_op(parser->fold, op, exprs))) {
1174 if (exprs[0]->vtype == TYPE_FLOAT) {
1175 out = fold_binary(ctx, INSTR_SUB_F, (ast_expression*)parser->fold->imm_float[2], exprs[0]);
1177 out = fold_binary(ctx, INSTR_SUB_V, (ast_expression*)parser->fold->imm_vector[1], exprs[0]);
1184 compile_error(ctx, "failed to apply operator %s", op->op);
1188 vec_push(sy->out, syexp(ctx, out));
1192 static bool parser_close_call(parser_t *parser, shunt *sy)
1194 /* was a function call */
1195 ast_expression *fun;
1196 ast_value *funval = NULL;
1200 size_t paramcount, i;
1203 fid = vec_last(sy->ops).off;
1204 vec_shrinkby(sy->ops, 1);
1206 /* out[fid] is the function
1207 * everything above is parameters...
1209 if (!vec_size(sy->argc)) {
1210 parseerror(parser, "internal error: no argument counter available");
1214 paramcount = vec_last(sy->argc);
1217 if (vec_size(sy->out) < fid) {
1218 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1219 (unsigned long)vec_size(sy->out),
1221 (unsigned long)paramcount);
1226 * TODO handle this at the intrinsic level with an ast_intrinsic
1229 if ((fun = sy->out[fid].out) == intrin_debug_typestring(parser->intrin)) {
1231 if (fid+2 != vec_size(sy->out) ||
1232 vec_last(sy->out).block)
1234 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1237 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1238 ast_unref(vec_last(sy->out).out);
1239 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1240 (ast_expression*)fold_constgen_string(parser->fold, ty, false));
1241 vec_shrinkby(sy->out, 1);
1246 * Now we need to determine if the function that is being called is
1247 * an intrinsic so we can evaluate if the arguments to it are constant
1248 * and than fruitfully fold them.
1250 #define fold_can_1(X) \
1251 (ast_istype(((ast_expression*)(X)), ast_value) && (X)->hasvalue && ((X)->cvq == CV_CONST) && \
1252 ((ast_expression*)(X))->vtype != TYPE_FUNCTION)
1254 if (fid + 1 < vec_size(sy->out))
1257 for (i = 0; i < paramcount; ++i) {
1258 if (!fold_can_1((ast_value*)sy->out[fid + 1 + i].out)) {
1265 * All is well which ends well, if we make it into here we can ignore the
1266 * intrinsic call and just evaluate it i.e constant fold it.
1268 if (fold && ast_istype(fun, ast_value) && ((ast_value*)fun)->intrinsic) {
1269 ast_expression **exprs = NULL;
1270 ast_expression *foldval = NULL;
1272 for (i = 0; i < paramcount; i++)
1273 vec_push(exprs, sy->out[fid+1 + i].out);
1275 if (!(foldval = intrin_fold(parser->intrin, (ast_value*)fun, exprs))) {
1281 * Blub: what sorts of unreffing and resizing of
1282 * sy->out should I be doing here?
1284 sy->out[fid] = syexp(foldval->node.context, foldval);
1285 vec_shrinkby(sy->out, paramcount);
1292 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1297 if (fid+1 + paramcount != vec_size(sy->out)) {
1298 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1299 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1303 for (i = 0; i < paramcount; ++i)
1304 vec_push(call->params, sy->out[fid+1 + i].out);
1305 vec_shrinkby(sy->out, paramcount);
1306 (void)!ast_call_check_types(call, parser->function->vtype->expression.varparam);
1307 if (parser->max_param_count < paramcount)
1308 parser->max_param_count = paramcount;
1310 if (ast_istype(fun, ast_value)) {
1311 funval = (ast_value*)fun;
1312 if ((fun->flags & AST_FLAG_VARIADIC) &&
1313 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1315 call->va_count = (ast_expression*)fold_constgen_float(parser->fold, (qcfloat_t)paramcount, false);
1319 /* overwrite fid, the function, with a call */
1320 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1322 if (fun->vtype != TYPE_FUNCTION) {
1323 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1328 parseerror(parser, "could not determine function return type");
1331 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1333 if (fun->flags & AST_FLAG_DEPRECATED) {
1335 return !parsewarning(parser, WARN_DEPRECATED,
1336 "call to function (which is marked deprecated)\n",
1337 "-> it has been declared here: %s:%i",
1338 ast_ctx(fun).file, ast_ctx(fun).line);
1341 return !parsewarning(parser, WARN_DEPRECATED,
1342 "call to `%s` (which is marked deprecated)\n"
1343 "-> `%s` declared here: %s:%i",
1344 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1346 return !parsewarning(parser, WARN_DEPRECATED,
1347 "call to `%s` (deprecated: %s)\n"
1348 "-> `%s` declared here: %s:%i",
1349 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1353 if (vec_size(fun->params) != paramcount &&
1354 !((fun->flags & AST_FLAG_VARIADIC) &&
1355 vec_size(fun->params) < paramcount))
1357 const char *fewmany = (vec_size(fun->params) > paramcount) ? "few" : "many";
1359 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1360 "too %s parameters for call to %s: expected %i, got %i\n"
1361 " -> `%s` has been declared here: %s:%i",
1362 fewmany, fval->name, (int)vec_size(fun->params), (int)paramcount,
1363 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1365 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1366 "too %s parameters for function call: expected %i, got %i\n"
1367 " -> it has been declared here: %s:%i",
1368 fewmany, (int)vec_size(fun->params), (int)paramcount,
1369 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1376 static bool parser_close_paren(parser_t *parser, shunt *sy)
1378 if (!vec_size(sy->ops)) {
1379 parseerror(parser, "unmatched closing paren");
1383 while (vec_size(sy->ops)) {
1384 if (vec_last(sy->ops).isparen) {
1385 if (vec_last(sy->paren) == PAREN_FUNC) {
1387 if (!parser_close_call(parser, sy))
1391 if (vec_last(sy->paren) == PAREN_EXPR) {
1393 if (!vec_size(sy->out)) {
1394 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1395 vec_shrinkby(sy->ops, 1);
1398 vec_shrinkby(sy->ops, 1);
1401 if (vec_last(sy->paren) == PAREN_INDEX) {
1403 /* pop off the parenthesis */
1404 vec_shrinkby(sy->ops, 1);
1405 /* then apply the index operator */
1406 if (!parser_sy_apply_operator(parser, sy))
1410 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1411 vec_last(sy->paren) = PAREN_TERNARY2;
1412 /* pop off the parenthesis */
1413 vec_shrinkby(sy->ops, 1);
1416 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1419 if (!parser_sy_apply_operator(parser, sy))
1425 static void parser_reclassify_token(parser_t *parser)
1428 if (parser->tok >= TOKEN_START)
1430 for (i = 0; i < operator_count; ++i) {
1431 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1432 parser->tok = TOKEN_OPERATOR;
1438 static ast_expression* parse_vararg_do(parser_t *parser)
1440 ast_expression *idx, *out;
1442 ast_value *funtype = parser->function->vtype;
1443 lex_ctx_t ctx = parser_ctx(parser);
1445 if (!parser->function->varargs) {
1446 parseerror(parser, "function has no variable argument list");
1450 if (!parser_next(parser) || parser->tok != '(') {
1451 parseerror(parser, "expected parameter index and type in parenthesis");
1454 if (!parser_next(parser)) {
1455 parseerror(parser, "error parsing parameter index");
1459 idx = parse_expression_leave(parser, true, false, false);
1463 if (parser->tok != ',') {
1464 if (parser->tok != ')') {
1466 parseerror(parser, "expected comma after parameter index");
1469 /* vararg piping: ...(start) */
1470 out = (ast_expression*)ast_argpipe_new(ctx, idx);
1474 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1476 parseerror(parser, "expected typename for vararg");
1480 typevar = parse_typename(parser, NULL, NULL, NULL);
1486 if (parser->tok != ')') {
1488 ast_delete(typevar);
1489 parseerror(parser, "expected closing paren");
1493 if (funtype->expression.varparam &&
1494 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1498 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1499 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1500 compile_error(ast_ctx(typevar),
1501 "function was declared to take varargs of type `%s`, requested type is: %s",
1505 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1506 ast_type_adopt(out, typevar);
1507 ast_delete(typevar);
1511 static ast_expression* parse_vararg(parser_t *parser)
1513 bool old_noops = parser->lex->flags.noops;
1515 ast_expression *out;
1517 parser->lex->flags.noops = true;
1518 out = parse_vararg_do(parser);
1520 parser->lex->flags.noops = old_noops;
1524 /* not to be exposed */
1525 bool ftepp_predef_exists(const char *name);
1526 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1528 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1529 parser->tok == TOKEN_IDENT &&
1530 !strcmp(parser_tokval(parser), "_"))
1532 /* a translatable string */
1535 parser->lex->flags.noops = true;
1536 if (!parser_next(parser) || parser->tok != '(') {
1537 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1540 parser->lex->flags.noops = false;
1541 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1542 parseerror(parser, "expected a constant string in translatable-string extension");
1545 val = (ast_value*)fold_constgen_string(parser->fold, parser_tokval(parser), true);
1548 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1550 if (!parser_next(parser) || parser->tok != ')') {
1551 parseerror(parser, "expected closing paren after translatable string");
1556 else if (parser->tok == TOKEN_DOTS)
1559 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1560 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1563 va = parse_vararg(parser);
1566 vec_push(sy->out, syexp(parser_ctx(parser), va));
1569 else if (parser->tok == TOKEN_FLOATCONST) {
1570 ast_expression *val = fold_constgen_float(parser->fold, (parser_token(parser)->constval.f), false);
1573 vec_push(sy->out, syexp(parser_ctx(parser), val));
1576 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1577 ast_expression *val = fold_constgen_float(parser->fold, (qcfloat_t)(parser_token(parser)->constval.i), false);
1580 vec_push(sy->out, syexp(parser_ctx(parser), val));
1583 else if (parser->tok == TOKEN_STRINGCONST) {
1584 ast_expression *val = fold_constgen_string(parser->fold, parser_tokval(parser), false);
1587 vec_push(sy->out, syexp(parser_ctx(parser), val));
1590 else if (parser->tok == TOKEN_VECTORCONST) {
1591 ast_expression *val = fold_constgen_vector(parser->fold, parser_token(parser)->constval.v);
1594 vec_push(sy->out, syexp(parser_ctx(parser), val));
1597 else if (parser->tok == TOKEN_IDENT)
1599 const char *ctoken = parser_tokval(parser);
1600 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1601 ast_expression *var;
1602 /* a_vector.{x,y,z} */
1603 if (!vec_size(sy->ops) ||
1604 !vec_last(sy->ops).etype ||
1605 operators[vec_last(sy->ops).etype-1].id != opid1('.'))
1607 /* When adding more intrinsics, fix the above condition */
1610 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1612 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1614 var = parser_find_var(parser, parser_tokval(parser));
1616 var = parser_find_field(parser, parser_tokval(parser));
1618 if (!var && with_labels) {
1619 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1621 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1622 var = (ast_expression*)lbl;
1623 vec_push(parser->labels, lbl);
1626 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
1627 var = (ast_expression*)fold_constgen_string(parser->fold, parser->function->name, false);
1630 * now we try for the real intrinsic hashtable. If the string
1631 * begins with __builtin, we simply skip past it, otherwise we
1632 * use the identifier as is.
1634 if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
1635 var = intrin_func(parser->intrin, parser_tokval(parser));
1639 * Try it again, intrin_func deals with the alias method as well
1640 * the first one masks for __builtin though, we emit warning here.
1643 if ((var = intrin_func(parser->intrin, parser_tokval(parser)))) {
1644 (void)!compile_warning(
1647 "using implicitly defined builtin `__builtin_%s' for `%s'",
1648 parser_tokval(parser),
1649 parser_tokval(parser)
1657 * sometimes people use preprocessing predefs without enabling them
1658 * i've done this thousands of times already myself. Lets check for
1659 * it in the predef table. And diagnose it better :)
1661 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
1662 parseerror(parser, "unexpected identifier: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1666 parseerror(parser, "unexpected identifier: %s", parser_tokval(parser));
1672 if (ast_istype(var, ast_value)) {
1673 ((ast_value*)var)->uses++;
1675 else if (ast_istype(var, ast_member)) {
1676 ast_member *mem = (ast_member*)var;
1677 if (ast_istype(mem->owner, ast_value))
1678 ((ast_value*)(mem->owner))->uses++;
1681 vec_push(sy->out, syexp(parser_ctx(parser), var));
1684 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1688 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1690 ast_expression *expr = NULL;
1693 bool wantop = false;
1694 /* only warn once about an assignment in a truth value because the current code
1695 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1697 bool warn_parenthesis = true;
1699 /* count the parens because an if starts with one, so the
1700 * end of a condition is an unmatched closing paren
1704 memset(&sy, 0, sizeof(sy));
1706 parser->lex->flags.noops = false;
1708 parser_reclassify_token(parser);
1712 if (parser->tok == TOKEN_TYPENAME) {
1713 parseerror(parser, "unexpected typename `%s`", parser_tokval(parser));
1717 if (parser->tok == TOKEN_OPERATOR)
1719 /* classify the operator */
1720 const oper_info *op;
1721 const oper_info *olast = NULL;
1723 for (o = 0; o < operator_count; ++o) {
1724 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1725 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1726 !strcmp(parser_tokval(parser), operators[o].op))
1731 if (o == operator_count) {
1732 compile_error(parser_ctx(parser), "unexpected operator: %s", parser_tokval(parser));
1735 /* found an operator */
1738 /* when declaring variables, a comma starts a new variable */
1739 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
1740 /* fixup the token */
1745 /* a colon without a pervious question mark cannot be a ternary */
1746 if (!ternaries && op->id == opid2(':','?')) {
1751 if (op->id == opid1(',')) {
1752 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1753 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1757 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1758 olast = &operators[vec_last(sy.ops).etype-1];
1760 /* first only apply higher precedences, assoc_left+equal comes after we warn about precedence rules */
1761 while (olast && op->prec < olast->prec)
1763 if (!parser_sy_apply_operator(parser, &sy))
1765 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1766 olast = &operators[vec_last(sy.ops).etype-1];
1771 #define IsAssignOp(x) (\
1772 (x) == opid1('=') || \
1773 (x) == opid2('+','=') || \
1774 (x) == opid2('-','=') || \
1775 (x) == opid2('*','=') || \
1776 (x) == opid2('/','=') || \
1777 (x) == opid2('%','=') || \
1778 (x) == opid2('&','=') || \
1779 (x) == opid2('|','=') || \
1780 (x) == opid3('&','~','=') \
1782 if (warn_parenthesis) {
1783 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1784 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1785 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
1788 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1789 warn_parenthesis = false;
1792 if (olast && olast->id != op->id) {
1793 if ((op->id == opid1('&') || op->id == opid1('|') || op->id == opid1('^')) &&
1794 (olast->id == opid1('&') || olast->id == opid1('|') || olast->id == opid1('^')))
1796 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around bitwise operations");
1797 warn_parenthesis = false;
1799 else if ((op->id == opid2('&','&') || op->id == opid2('|','|')) &&
1800 (olast->id == opid2('&','&') || olast->id == opid2('|','|')))
1802 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around logical operations");
1803 warn_parenthesis = false;
1809 (op->prec < olast->prec) ||
1810 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1812 if (!parser_sy_apply_operator(parser, &sy))
1814 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1815 olast = &operators[vec_last(sy.ops).etype-1];
1820 if (op->id == opid1('(')) {
1822 size_t sycount = vec_size(sy.out);
1823 /* we expected an operator, this is the function-call operator */
1824 vec_push(sy.paren, PAREN_FUNC);
1825 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
1826 vec_push(sy.argc, 0);
1828 vec_push(sy.paren, PAREN_EXPR);
1829 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1832 } else if (op->id == opid1('[')) {
1834 parseerror(parser, "unexpected array subscript");
1837 vec_push(sy.paren, PAREN_INDEX);
1838 /* push both the operator and the paren, this makes life easier */
1839 vec_push(sy.ops, syop(parser_ctx(parser), op));
1840 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1842 } else if (op->id == opid2('?',':')) {
1843 vec_push(sy.ops, syop(parser_ctx(parser), op));
1844 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1847 vec_push(sy.paren, PAREN_TERNARY1);
1848 } else if (op->id == opid2(':','?')) {
1849 if (!vec_size(sy.paren)) {
1850 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1853 if (vec_last(sy.paren) != PAREN_TERNARY1) {
1854 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1857 if (!parser_close_paren(parser, &sy))
1859 vec_push(sy.ops, syop(parser_ctx(parser), op));
1863 vec_push(sy.ops, syop(parser_ctx(parser), op));
1864 wantop = !!(op->flags & OP_SUFFIX);
1867 else if (parser->tok == ')') {
1868 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1869 if (!parser_sy_apply_operator(parser, &sy))
1872 if (!vec_size(sy.paren))
1875 if (vec_last(sy.paren) == PAREN_TERNARY1) {
1876 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
1879 if (!parser_close_paren(parser, &sy))
1882 /* must be a function call without parameters */
1883 if (vec_last(sy.paren) != PAREN_FUNC) {
1884 parseerror(parser, "closing paren in invalid position");
1887 if (!parser_close_paren(parser, &sy))
1892 else if (parser->tok == '(') {
1893 parseerror(parser, "internal error: '(' should be classified as operator");
1896 else if (parser->tok == '[') {
1897 parseerror(parser, "internal error: '[' should be classified as operator");
1900 else if (parser->tok == ']') {
1901 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1902 if (!parser_sy_apply_operator(parser, &sy))
1905 if (!vec_size(sy.paren))
1907 if (vec_last(sy.paren) != PAREN_INDEX) {
1908 parseerror(parser, "mismatched parentheses, unexpected ']'");
1911 if (!parser_close_paren(parser, &sy))
1916 if (!parse_sya_operand(parser, &sy, with_labels))
1919 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
1920 vec_last(sy.argc)++;
1925 /* in this case we might want to allow constant string concatenation */
1926 bool concatenated = false;
1927 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
1928 ast_expression *lexpr = vec_last(sy.out).out;
1929 if (ast_istype(lexpr, ast_value)) {
1930 ast_value *last = (ast_value*)lexpr;
1931 if (last->isimm == true && last->cvq == CV_CONST &&
1932 last->hasvalue && last->expression.vtype == TYPE_STRING)
1934 char *newstr = NULL;
1935 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
1936 vec_last(sy.out).out = (ast_expression*)fold_constgen_string(parser->fold, newstr, false);
1938 concatenated = true;
1942 if (!concatenated) {
1943 parseerror(parser, "expected operator or end of statement");
1948 if (!parser_next(parser)) {
1951 if (parser->tok == ';' ||
1952 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
1953 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
1959 while (vec_size(sy.ops)) {
1960 if (!parser_sy_apply_operator(parser, &sy))
1964 parser->lex->flags.noops = true;
1965 if (vec_size(sy.out) != 1) {
1966 parseerror(parser, "expression expected");
1969 expr = sy.out[0].out;
1972 if (vec_size(sy.paren)) {
1973 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
1981 parser->lex->flags.noops = true;
1982 for (i = 0; i < vec_size(sy.out); ++i) {
1984 ast_unref(sy.out[i].out);
1993 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
1995 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
1998 if (parser->tok != ';') {
1999 parseerror(parser, "semicolon expected after expression");
2003 if (!parser_next(parser)) {
2010 static void parser_enterblock(parser_t *parser)
2012 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2013 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2014 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2015 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2016 vec_push(parser->_block_ctx, parser_ctx(parser));
2019 static bool parser_leaveblock(parser_t *parser)
2022 size_t locals, typedefs;
2024 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2025 parseerror(parser, "internal error: parser_leaveblock with no block");
2029 util_htdel(vec_last(parser->variables));
2031 vec_pop(parser->variables);
2032 if (!vec_size(parser->_blocklocals)) {
2033 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2037 locals = vec_last(parser->_blocklocals);
2038 vec_pop(parser->_blocklocals);
2039 while (vec_size(parser->_locals) != locals) {
2040 ast_expression *e = vec_last(parser->_locals);
2041 ast_value *v = (ast_value*)e;
2042 vec_pop(parser->_locals);
2043 if (ast_istype(e, ast_value) && !v->uses) {
2044 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2049 typedefs = vec_last(parser->_blocktypedefs);
2050 while (vec_size(parser->_typedefs) != typedefs) {
2051 ast_delete(vec_last(parser->_typedefs));
2052 vec_pop(parser->_typedefs);
2054 util_htdel(vec_last(parser->typedefs));
2055 vec_pop(parser->typedefs);
2057 vec_pop(parser->_block_ctx);
2062 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2064 vec_push(parser->_locals, e);
2065 util_htset(vec_last(parser->variables), name, (void*)e);
2068 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2070 vec_push(parser->globals, e);
2071 util_htset(parser->htglobals, name, e);
2074 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2078 ast_expression *prev;
2080 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2082 ast_type_to_string(cond, ty, sizeof(ty));
2083 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2086 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2089 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2092 parseerror(parser, "internal error: failed to process condition");
2097 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2099 /* vector types need to be cast to true booleans */
2100 ast_binary *bin = (ast_binary*)cond;
2101 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2103 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2105 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2108 parseerror(parser, "internal error: failed to process condition");
2115 unary = (ast_unary*)cond;
2116 /* ast_istype dereferences cond, should test here for safety */
2117 while (cond && ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2119 cond = unary->operand;
2120 unary->operand = NULL;
2123 unary = (ast_unary*)cond;
2127 parseerror(parser, "internal error: failed to process condition");
2129 if (ifnot) *_ifnot = !*_ifnot;
2133 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2136 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2139 lex_ctx_t ctx = parser_ctx(parser);
2141 (void)block; /* not touching */
2143 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2144 if (!parser_next(parser)) {
2145 parseerror(parser, "expected condition or 'not'");
2148 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2150 if (!parser_next(parser)) {
2151 parseerror(parser, "expected condition in parenthesis");
2155 if (parser->tok != '(') {
2156 parseerror(parser, "expected 'if' condition in parenthesis");
2159 /* parse into the expression */
2160 if (!parser_next(parser)) {
2161 parseerror(parser, "expected 'if' condition after opening paren");
2164 /* parse the condition */
2165 cond = parse_expression_leave(parser, false, true, false);
2169 if (parser->tok != ')') {
2170 parseerror(parser, "expected closing paren after 'if' condition");
2174 /* parse into the 'then' branch */
2175 if (!parser_next(parser)) {
2176 parseerror(parser, "expected statement for on-true branch of 'if'");
2180 if (!parse_statement_or_block(parser, &ontrue)) {
2185 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2186 /* check for an else */
2187 if (!strcmp(parser_tokval(parser), "else")) {
2188 /* parse into the 'else' branch */
2189 if (!parser_next(parser)) {
2190 parseerror(parser, "expected on-false branch after 'else'");
2195 if (!parse_statement_or_block(parser, &onfalse)) {
2202 cond = process_condition(parser, cond, &ifnot);
2204 if (ontrue) ast_delete(ontrue);
2205 if (onfalse) ast_delete(onfalse);
2210 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2212 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2213 *out = (ast_expression*)ifthen;
2217 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2218 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2223 /* skip the 'while' and get the body */
2224 if (!parser_next(parser)) {
2225 if (OPTS_FLAG(LOOP_LABELS))
2226 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2228 parseerror(parser, "expected 'while' condition in parenthesis");
2232 if (parser->tok == ':') {
2233 if (!OPTS_FLAG(LOOP_LABELS))
2234 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2235 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2236 parseerror(parser, "expected loop label");
2239 label = util_strdup(parser_tokval(parser));
2240 if (!parser_next(parser)) {
2242 parseerror(parser, "expected 'while' condition in parenthesis");
2247 if (parser->tok != '(') {
2248 parseerror(parser, "expected 'while' condition in parenthesis");
2252 vec_push(parser->breaks, label);
2253 vec_push(parser->continues, label);
2255 rv = parse_while_go(parser, block, out);
2258 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2259 parseerror(parser, "internal error: label stack corrupted");
2265 vec_pop(parser->breaks);
2266 vec_pop(parser->continues);
2271 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2274 ast_expression *cond, *ontrue;
2278 lex_ctx_t ctx = parser_ctx(parser);
2280 (void)block; /* not touching */
2282 /* parse into the expression */
2283 if (!parser_next(parser)) {
2284 parseerror(parser, "expected 'while' condition after opening paren");
2287 /* parse the condition */
2288 cond = parse_expression_leave(parser, false, true, false);
2292 if (parser->tok != ')') {
2293 parseerror(parser, "expected closing paren after 'while' condition");
2297 /* parse into the 'then' branch */
2298 if (!parser_next(parser)) {
2299 parseerror(parser, "expected while-loop body");
2303 if (!parse_statement_or_block(parser, &ontrue)) {
2308 cond = process_condition(parser, cond, &ifnot);
2313 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2314 *out = (ast_expression*)aloop;
2318 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2319 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2324 /* skip the 'do' and get the body */
2325 if (!parser_next(parser)) {
2326 if (OPTS_FLAG(LOOP_LABELS))
2327 parseerror(parser, "expected loop label or body");
2329 parseerror(parser, "expected loop body");
2333 if (parser->tok == ':') {
2334 if (!OPTS_FLAG(LOOP_LABELS))
2335 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2336 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2337 parseerror(parser, "expected loop label");
2340 label = util_strdup(parser_tokval(parser));
2341 if (!parser_next(parser)) {
2343 parseerror(parser, "expected loop body");
2348 vec_push(parser->breaks, label);
2349 vec_push(parser->continues, label);
2351 rv = parse_dowhile_go(parser, block, out);
2354 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2355 parseerror(parser, "internal error: label stack corrupted");
2358 * Test for NULL otherwise ast_delete dereferences null pointer
2366 vec_pop(parser->breaks);
2367 vec_pop(parser->continues);
2372 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2375 ast_expression *cond, *ontrue;
2379 lex_ctx_t ctx = parser_ctx(parser);
2381 (void)block; /* not touching */
2383 if (!parse_statement_or_block(parser, &ontrue))
2386 /* expect the "while" */
2387 if (parser->tok != TOKEN_KEYWORD ||
2388 strcmp(parser_tokval(parser), "while"))
2390 parseerror(parser, "expected 'while' and condition");
2395 /* skip the 'while' and check for opening paren */
2396 if (!parser_next(parser) || parser->tok != '(') {
2397 parseerror(parser, "expected 'while' condition in parenthesis");
2401 /* parse into the expression */
2402 if (!parser_next(parser)) {
2403 parseerror(parser, "expected 'while' condition after opening paren");
2407 /* parse the condition */
2408 cond = parse_expression_leave(parser, false, true, false);
2412 if (parser->tok != ')') {
2413 parseerror(parser, "expected closing paren after 'while' condition");
2419 if (!parser_next(parser) || parser->tok != ';') {
2420 parseerror(parser, "expected semicolon after condition");
2426 if (!parser_next(parser)) {
2427 parseerror(parser, "parse error");
2433 cond = process_condition(parser, cond, &ifnot);
2438 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2439 *out = (ast_expression*)aloop;
2443 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2444 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2449 /* skip the 'for' and check for opening paren */
2450 if (!parser_next(parser)) {
2451 if (OPTS_FLAG(LOOP_LABELS))
2452 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2454 parseerror(parser, "expected 'for' expressions in parenthesis");
2458 if (parser->tok == ':') {
2459 if (!OPTS_FLAG(LOOP_LABELS))
2460 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2461 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2462 parseerror(parser, "expected loop label");
2465 label = util_strdup(parser_tokval(parser));
2466 if (!parser_next(parser)) {
2468 parseerror(parser, "expected 'for' expressions in parenthesis");
2473 if (parser->tok != '(') {
2474 parseerror(parser, "expected 'for' expressions in parenthesis");
2478 vec_push(parser->breaks, label);
2479 vec_push(parser->continues, label);
2481 rv = parse_for_go(parser, block, out);
2484 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2485 parseerror(parser, "internal error: label stack corrupted");
2491 vec_pop(parser->breaks);
2492 vec_pop(parser->continues);
2496 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2499 ast_expression *initexpr, *cond, *increment, *ontrue;
2504 lex_ctx_t ctx = parser_ctx(parser);
2506 parser_enterblock(parser);
2513 /* parse into the expression */
2514 if (!parser_next(parser)) {
2515 parseerror(parser, "expected 'for' initializer after opening paren");
2520 if (parser->tok == TOKEN_IDENT)
2521 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2523 if (typevar || parser->tok == TOKEN_TYPENAME) {
2525 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2526 if (parsewarning(parser, WARN_EXTENSIONS,
2527 "current standard does not allow variable declarations in for-loop initializers"))
2531 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2534 else if (parser->tok != ';')
2536 initexpr = parse_expression_leave(parser, false, false, false);
2540 /* move on to condition */
2541 if (parser->tok != ';') {
2542 parseerror(parser, "expected semicolon after for-loop initializer");
2546 if (!parser_next(parser)) {
2547 parseerror(parser, "expected for-loop condition");
2552 /* parse the condition */
2553 if (parser->tok != ';') {
2554 cond = parse_expression_leave(parser, false, true, false);
2559 /* move on to incrementor */
2560 if (parser->tok != ';') {
2561 parseerror(parser, "expected semicolon after for-loop initializer");
2564 if (!parser_next(parser)) {
2565 parseerror(parser, "expected for-loop condition");
2569 /* parse the incrementor */
2570 if (parser->tok != ')') {
2571 lex_ctx_t condctx = parser_ctx(parser);
2572 increment = parse_expression_leave(parser, false, false, false);
2575 if (!ast_side_effects(increment)) {
2576 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2582 if (parser->tok != ')') {
2583 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2586 /* parse into the 'then' branch */
2587 if (!parser_next(parser)) {
2588 parseerror(parser, "expected for-loop body");
2591 if (!parse_statement_or_block(parser, &ontrue))
2595 cond = process_condition(parser, cond, &ifnot);
2599 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2600 *out = (ast_expression*)aloop;
2602 if (!parser_leaveblock(parser)) {
2608 if (initexpr) ast_unref(initexpr);
2609 if (cond) ast_unref(cond);
2610 if (increment) ast_unref(increment);
2611 (void)!parser_leaveblock(parser);
2615 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2617 ast_expression *exp = NULL;
2618 ast_expression *var = NULL;
2619 ast_return *ret = NULL;
2620 ast_value *retval = parser->function->return_value;
2621 ast_value *expected = parser->function->vtype;
2623 lex_ctx_t ctx = parser_ctx(parser);
2625 (void)block; /* not touching */
2627 if (!parser_next(parser)) {
2628 parseerror(parser, "expected return expression");
2632 /* return assignments */
2633 if (parser->tok == '=') {
2634 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
2635 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
2639 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
2641 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
2642 parseerror(parser, "invalid return type: `%s'", ty1);
2646 if (!parser_next(parser)) {
2647 parseerror(parser, "expected return assignment expression");
2651 if (!(exp = parse_expression_leave(parser, false, false, false)))
2654 /* prepare the return value */
2656 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
2657 ast_type_adopt(retval, expected->expression.next);
2658 parser->function->return_value = retval;
2661 if (!ast_compare_type(exp, (ast_expression*)retval)) {
2662 char ty1[1024], ty2[1024];
2663 ast_type_to_string(exp, ty1, sizeof(ty1));
2664 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
2665 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
2668 /* store to 'return' local variable */
2669 var = (ast_expression*)ast_store_new(
2671 type_store_instr[expected->expression.next->vtype],
2672 (ast_expression*)retval, exp);
2679 if (parser->tok != ';')
2680 parseerror(parser, "missing semicolon after return assignment");
2681 else if (!parser_next(parser))
2682 parseerror(parser, "parse error after return assignment");
2688 if (parser->tok != ';') {
2689 exp = parse_expression(parser, false, false);
2693 if (exp->vtype != TYPE_NIL &&
2694 exp->vtype != ((ast_expression*)expected)->next->vtype)
2696 parseerror(parser, "return with invalid expression");
2699 ret = ast_return_new(ctx, exp);
2705 if (!parser_next(parser))
2706 parseerror(parser, "parse error");
2708 if (!retval && expected->expression.next->vtype != TYPE_VOID)
2710 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2712 ret = ast_return_new(ctx, (ast_expression*)retval);
2714 *out = (ast_expression*)ret;
2718 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2721 unsigned int levels = 0;
2722 lex_ctx_t ctx = parser_ctx(parser);
2723 const char **loops = (is_continue ? parser->continues : parser->breaks);
2725 (void)block; /* not touching */
2726 if (!parser_next(parser)) {
2727 parseerror(parser, "expected semicolon or loop label");
2731 if (!vec_size(loops)) {
2733 parseerror(parser, "`continue` can only be used inside loops");
2735 parseerror(parser, "`break` can only be used inside loops or switches");
2738 if (parser->tok == TOKEN_IDENT) {
2739 if (!OPTS_FLAG(LOOP_LABELS))
2740 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2741 i = vec_size(loops);
2743 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2746 parseerror(parser, "no such loop to %s: `%s`",
2747 (is_continue ? "continue" : "break out of"),
2748 parser_tokval(parser));
2753 if (!parser_next(parser)) {
2754 parseerror(parser, "expected semicolon");
2759 if (parser->tok != ';') {
2760 parseerror(parser, "expected semicolon");
2764 if (!parser_next(parser))
2765 parseerror(parser, "parse error");
2767 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2771 /* returns true when it was a variable qualifier, false otherwise!
2772 * on error, cvq is set to CV_WRONG
2779 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2781 bool had_const = false;
2782 bool had_var = false;
2783 bool had_noref = false;
2784 bool had_attrib = false;
2785 bool had_static = false;
2788 static attribute_t attributes[] = {
2789 { "noreturn", AST_FLAG_NORETURN },
2790 { "inline", AST_FLAG_INLINE },
2791 { "eraseable", AST_FLAG_ERASEABLE },
2792 { "accumulate", AST_FLAG_ACCUMULATE },
2793 { "last", AST_FLAG_FINAL_DECL }
2800 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2802 /* parse an attribute */
2803 if (!parser_next(parser)) {
2804 parseerror(parser, "expected attribute after `[[`");
2809 for (i = 0; i < GMQCC_ARRAY_COUNT(attributes); i++) {
2810 if (!strcmp(parser_tokval(parser), attributes[i].name)) {
2811 flags |= attributes[i].flag;
2812 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2813 parseerror(parser, "`%s` attribute has no parameters, expected `]]`",
2814 attributes[i].name);
2822 if (i != GMQCC_ARRAY_COUNT(attributes))
2826 if (!strcmp(parser_tokval(parser), "noref")) {
2828 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2829 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2834 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
2835 flags |= AST_FLAG_ALIAS;
2838 if (!parser_next(parser)) {
2839 parseerror(parser, "parse error in attribute");
2843 if (parser->tok == '(') {
2844 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2845 parseerror(parser, "`alias` attribute missing parameter");
2849 *message = util_strdup(parser_tokval(parser));
2851 if (!parser_next(parser)) {
2852 parseerror(parser, "parse error in attribute");
2856 if (parser->tok != ')') {
2857 parseerror(parser, "`alias` attribute expected `)` after parameter");
2861 if (!parser_next(parser)) {
2862 parseerror(parser, "parse error in attribute");
2867 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2868 parseerror(parser, "`alias` attribute expected `]]`");
2872 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2873 flags |= AST_FLAG_DEPRECATED;
2876 if (!parser_next(parser)) {
2877 parseerror(parser, "parse error in attribute");
2881 if (parser->tok == '(') {
2882 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2883 parseerror(parser, "`deprecated` attribute missing parameter");
2887 *message = util_strdup(parser_tokval(parser));
2889 if (!parser_next(parser)) {
2890 parseerror(parser, "parse error in attribute");
2894 if(parser->tok != ')') {
2895 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2899 if (!parser_next(parser)) {
2900 parseerror(parser, "parse error in attribute");
2905 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2906 parseerror(parser, "`deprecated` attribute expected `]]`");
2909 if (*message) mem_d(*message);
2915 else if (!strcmp(parser_tokval(parser), "coverage") && !(flags & AST_FLAG_COVERAGE)) {
2916 flags |= AST_FLAG_COVERAGE;
2917 if (!parser_next(parser)) {
2919 parseerror(parser, "parse error in coverage attribute");
2923 if (parser->tok == '(') {
2924 if (!parser_next(parser)) {
2926 parseerror(parser, "invalid parameter for coverage() attribute\n"
2927 "valid are: block");
2931 if (parser->tok != ')') {
2933 if (parser->tok != TOKEN_IDENT)
2934 goto bad_coverage_arg;
2935 if (!strcmp(parser_tokval(parser), "block"))
2936 flags |= AST_FLAG_BLOCK_COVERAGE;
2937 else if (!strcmp(parser_tokval(parser), "none"))
2938 flags &= ~(AST_FLAG_COVERAGE_MASK);
2940 goto bad_coverage_arg;
2941 if (!parser_next(parser))
2942 goto error_in_coverage;
2943 if (parser->tok == ',') {
2944 if (!parser_next(parser))
2945 goto error_in_coverage;
2947 } while (parser->tok != ')');
2949 if (parser->tok != ')' || !parser_next(parser))
2950 goto error_in_coverage;
2952 /* without parameter [[coverage]] equals [[coverage(block)]] */
2953 flags |= AST_FLAG_BLOCK_COVERAGE;
2958 /* Skip tokens until we hit a ]] */
2959 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2960 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2961 if (!parser_next(parser)) {
2962 parseerror(parser, "error inside attribute");
2969 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2971 else if (!strcmp(parser_tokval(parser), "const"))
2973 else if (!strcmp(parser_tokval(parser), "var"))
2975 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2977 else if (!strcmp(parser_tokval(parser), "noref"))
2979 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2986 if (!parser_next(parser))
2996 *is_static = had_static;
3000 parseerror(parser, "parse error after variable qualifier");
3005 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
3006 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
3011 /* skip the 'while' and get the body */
3012 if (!parser_next(parser)) {
3013 if (OPTS_FLAG(LOOP_LABELS))
3014 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
3016 parseerror(parser, "expected 'switch' operand in parenthesis");
3020 if (parser->tok == ':') {
3021 if (!OPTS_FLAG(LOOP_LABELS))
3022 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3023 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3024 parseerror(parser, "expected loop label");
3027 label = util_strdup(parser_tokval(parser));
3028 if (!parser_next(parser)) {
3030 parseerror(parser, "expected 'switch' operand in parenthesis");
3035 if (parser->tok != '(') {
3036 parseerror(parser, "expected 'switch' operand in parenthesis");
3040 vec_push(parser->breaks, label);
3042 rv = parse_switch_go(parser, block, out);
3045 if (vec_last(parser->breaks) != label) {
3046 parseerror(parser, "internal error: label stack corrupted");
3052 vec_pop(parser->breaks);
3057 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3059 ast_expression *operand;
3062 ast_switch *switchnode;
3063 ast_switch_case swcase;
3066 bool noref, is_static;
3067 uint32_t qflags = 0;
3069 lex_ctx_t ctx = parser_ctx(parser);
3071 (void)block; /* not touching */
3074 /* parse into the expression */
3075 if (!parser_next(parser)) {
3076 parseerror(parser, "expected switch operand");
3079 /* parse the operand */
3080 operand = parse_expression_leave(parser, false, false, false);
3084 switchnode = ast_switch_new(ctx, operand);
3087 if (parser->tok != ')') {
3088 ast_delete(switchnode);
3089 parseerror(parser, "expected closing paren after 'switch' operand");
3093 /* parse over the opening paren */
3094 if (!parser_next(parser) || parser->tok != '{') {
3095 ast_delete(switchnode);
3096 parseerror(parser, "expected list of cases");
3100 if (!parser_next(parser)) {
3101 ast_delete(switchnode);
3102 parseerror(parser, "expected 'case' or 'default'");
3106 /* new block; allow some variables to be declared here */
3107 parser_enterblock(parser);
3110 if (parser->tok == TOKEN_IDENT)
3111 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3112 if (typevar || parser->tok == TOKEN_TYPENAME) {
3113 if (!parse_variable(parser, block, true, CV_NONE, typevar, false, false, 0, NULL)) {
3114 ast_delete(switchnode);
3119 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3121 if (cvq == CV_WRONG) {
3122 ast_delete(switchnode);
3125 if (!parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, NULL)) {
3126 ast_delete(switchnode);
3135 while (parser->tok != '}') {
3136 ast_block *caseblock;
3138 if (!strcmp(parser_tokval(parser), "case")) {
3139 if (!parser_next(parser)) {
3140 ast_delete(switchnode);
3141 parseerror(parser, "expected expression for case");
3144 swcase.value = parse_expression_leave(parser, false, false, false);
3145 if (!swcase.value) {
3146 ast_delete(switchnode);
3147 parseerror(parser, "expected expression for case");
3150 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3151 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3152 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3158 else if (!strcmp(parser_tokval(parser), "default")) {
3159 swcase.value = NULL;
3160 if (!parser_next(parser)) {
3161 ast_delete(switchnode);
3162 parseerror(parser, "expected colon");
3167 ast_delete(switchnode);
3168 parseerror(parser, "expected 'case' or 'default'");
3172 /* Now the colon and body */
3173 if (parser->tok != ':') {
3174 if (swcase.value) ast_unref(swcase.value);
3175 ast_delete(switchnode);
3176 parseerror(parser, "expected colon");
3180 if (!parser_next(parser)) {
3181 if (swcase.value) ast_unref(swcase.value);
3182 ast_delete(switchnode);
3183 parseerror(parser, "expected statements or case");
3186 caseblock = ast_block_new(parser_ctx(parser));
3188 if (swcase.value) ast_unref(swcase.value);
3189 ast_delete(switchnode);
3192 swcase.code = (ast_expression*)caseblock;
3193 vec_push(switchnode->cases, swcase);
3195 ast_expression *expr;
3196 if (parser->tok == '}')
3198 if (parser->tok == TOKEN_KEYWORD) {
3199 if (!strcmp(parser_tokval(parser), "case") ||
3200 !strcmp(parser_tokval(parser), "default"))
3205 if (!parse_statement(parser, caseblock, &expr, true)) {
3206 ast_delete(switchnode);
3211 if (!ast_block_add_expr(caseblock, expr)) {
3212 ast_delete(switchnode);
3218 parser_leaveblock(parser);
3221 if (parser->tok != '}') {
3222 ast_delete(switchnode);
3223 parseerror(parser, "expected closing paren of case list");
3226 if (!parser_next(parser)) {
3227 ast_delete(switchnode);
3228 parseerror(parser, "parse error after switch");
3231 *out = (ast_expression*)switchnode;
3235 /* parse computed goto sides */
3236 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3237 ast_expression *on_true;
3238 ast_expression *on_false;
3239 ast_expression *cond;
3244 if (ast_istype(*side, ast_ternary)) {
3245 ast_ternary *tern = (ast_ternary*)*side;
3246 on_true = parse_goto_computed(parser, &tern->on_true);
3247 on_false = parse_goto_computed(parser, &tern->on_false);
3249 if (!on_true || !on_false) {
3250 parseerror(parser, "expected label or expression in ternary");
3251 if (on_true) ast_unref(on_true);
3252 if (on_false) ast_unref(on_false);
3260 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3261 } else if (ast_istype(*side, ast_label)) {
3262 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3263 ast_goto_set_label(gt, ((ast_label*)*side));
3265 return (ast_expression*)gt;
3270 static bool parse_goto(parser_t *parser, ast_expression **out)
3272 ast_goto *gt = NULL;
3273 ast_expression *lbl;
3275 if (!parser_next(parser))
3278 if (parser->tok != TOKEN_IDENT) {
3279 ast_expression *expression;
3281 /* could be an expression i.e computed goto :-) */
3282 if (parser->tok != '(') {
3283 parseerror(parser, "expected label name after `goto`");
3287 /* failed to parse expression for goto */
3288 if (!(expression = parse_expression(parser, false, true)) ||
3289 !(*out = parse_goto_computed(parser, &expression))) {
3290 parseerror(parser, "invalid goto expression");
3292 ast_unref(expression);
3299 /* not computed goto */
3300 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3301 lbl = parser_find_label(parser, gt->name);
3303 if (!ast_istype(lbl, ast_label)) {
3304 parseerror(parser, "internal error: label is not an ast_label");
3308 ast_goto_set_label(gt, (ast_label*)lbl);
3311 vec_push(parser->gotos, gt);
3313 if (!parser_next(parser) || parser->tok != ';') {
3314 parseerror(parser, "semicolon expected after goto label");
3317 if (!parser_next(parser)) {
3318 parseerror(parser, "parse error after goto");
3322 *out = (ast_expression*)gt;
3326 static bool parse_skipwhite(parser_t *parser)
3329 if (!parser_next(parser))
3331 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3332 return parser->tok < TOKEN_ERROR;
3335 static bool parse_eol(parser_t *parser)
3337 if (!parse_skipwhite(parser))
3339 return parser->tok == TOKEN_EOL;
3342 static bool parse_pragma_do(parser_t *parser)
3344 if (!parser_next(parser) ||
3345 parser->tok != TOKEN_IDENT ||
3346 strcmp(parser_tokval(parser), "pragma"))
3348 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3351 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3352 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3356 if (!strcmp(parser_tokval(parser), "noref")) {
3357 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3358 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3361 parser->noref = !!parser_token(parser)->constval.i;
3362 if (!parse_eol(parser)) {
3363 parseerror(parser, "parse error after `noref` pragma");
3369 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3372 while (!parse_eol(parser)) {
3373 parser_next(parser);
3382 static bool parse_pragma(parser_t *parser)
3385 parser->lex->flags.preprocessing = true;
3386 parser->lex->flags.mergelines = true;
3387 rv = parse_pragma_do(parser);
3388 if (parser->tok != TOKEN_EOL) {
3389 parseerror(parser, "junk after pragma");
3392 parser->lex->flags.preprocessing = false;
3393 parser->lex->flags.mergelines = false;
3394 if (!parser_next(parser)) {
3395 parseerror(parser, "parse error after pragma");
3401 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3403 bool noref, is_static;
3405 uint32_t qflags = 0;
3406 ast_value *typevar = NULL;
3407 char *vstring = NULL;
3411 if (parser->tok == TOKEN_IDENT)
3412 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3414 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.' || parser->tok == TOKEN_DOTS)
3416 /* local variable */
3418 parseerror(parser, "cannot declare a variable from here");
3421 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3422 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3425 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3429 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3431 if (cvq == CV_WRONG)
3433 return parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, vstring);
3435 else if (parser->tok == TOKEN_KEYWORD)
3437 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3442 if (!parser_next(parser)) {
3443 parseerror(parser, "parse error after __builtin_debug_printtype");
3447 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3449 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3450 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3451 if (!parser_next(parser)) {
3452 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3458 if (!parse_statement(parser, block, out, allow_cases))
3461 con_out("__builtin_debug_printtype: got no output node\n");
3464 ast_type_to_string(*out, ty, sizeof(ty));
3465 con_out("__builtin_debug_printtype: `%s`\n", ty);
3470 else if (!strcmp(parser_tokval(parser), "return"))
3472 return parse_return(parser, block, out);
3474 else if (!strcmp(parser_tokval(parser), "if"))
3476 return parse_if(parser, block, out);
3478 else if (!strcmp(parser_tokval(parser), "while"))
3480 return parse_while(parser, block, out);
3482 else if (!strcmp(parser_tokval(parser), "do"))
3484 return parse_dowhile(parser, block, out);
3486 else if (!strcmp(parser_tokval(parser), "for"))
3488 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3489 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3492 return parse_for(parser, block, out);
3494 else if (!strcmp(parser_tokval(parser), "break"))
3496 return parse_break_continue(parser, block, out, false);
3498 else if (!strcmp(parser_tokval(parser), "continue"))
3500 return parse_break_continue(parser, block, out, true);
3502 else if (!strcmp(parser_tokval(parser), "switch"))
3504 return parse_switch(parser, block, out);
3506 else if (!strcmp(parser_tokval(parser), "case") ||
3507 !strcmp(parser_tokval(parser), "default"))
3510 parseerror(parser, "unexpected 'case' label");
3515 else if (!strcmp(parser_tokval(parser), "goto"))
3517 return parse_goto(parser, out);
3519 else if (!strcmp(parser_tokval(parser), "typedef"))
3521 if (!parser_next(parser)) {
3522 parseerror(parser, "expected type definition after 'typedef'");
3525 return parse_typedef(parser);
3527 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3530 else if (parser->tok == '{')
3533 inner = parse_block(parser);
3536 *out = (ast_expression*)inner;
3539 else if (parser->tok == ':')
3543 if (!parser_next(parser)) {
3544 parseerror(parser, "expected label name");
3547 if (parser->tok != TOKEN_IDENT) {
3548 parseerror(parser, "label must be an identifier");
3551 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3553 if (!label->undefined) {
3554 parseerror(parser, "label `%s` already defined", label->name);
3557 label->undefined = false;
3560 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3561 vec_push(parser->labels, label);
3563 *out = (ast_expression*)label;
3564 if (!parser_next(parser)) {
3565 parseerror(parser, "parse error after label");
3568 for (i = 0; i < vec_size(parser->gotos); ++i) {
3569 if (!strcmp(parser->gotos[i]->name, label->name)) {
3570 ast_goto_set_label(parser->gotos[i], label);
3571 vec_remove(parser->gotos, i, 1);
3577 else if (parser->tok == ';')
3579 if (!parser_next(parser)) {
3580 parseerror(parser, "parse error after empty statement");
3587 lex_ctx_t ctx = parser_ctx(parser);
3588 ast_expression *exp = parse_expression(parser, false, false);
3592 if (!ast_side_effects(exp)) {
3593 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3600 static bool parse_enum(parser_t *parser)
3603 bool reverse = false;
3605 ast_value **values = NULL;
3606 ast_value *var = NULL;
3609 ast_expression *old;
3611 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3612 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3616 /* enumeration attributes (can add more later) */
3617 if (parser->tok == ':') {
3618 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3619 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3624 if (!strcmp(parser_tokval(parser), "flag")) {
3628 else if (!strcmp(parser_tokval(parser), "reverse")) {
3632 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3636 if (!parser_next(parser) || parser->tok != '{') {
3637 parseerror(parser, "expected `{` after enum attribute ");
3643 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3644 if (parser->tok == '}') {
3645 /* allow an empty enum */
3648 parseerror(parser, "expected identifier or `}`");
3652 old = parser_find_field(parser, parser_tokval(parser));
3654 old = parser_find_global(parser, parser_tokval(parser));
3656 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3657 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3661 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3662 vec_push(values, var);
3663 var->cvq = CV_CONST;
3664 var->hasvalue = true;
3666 /* for flagged enumerations increment in POTs of TWO */
3667 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3668 parser_addglobal(parser, var->name, (ast_expression*)var);
3670 if (!parser_next(parser)) {
3671 parseerror(parser, "expected `=`, `}` or comma after identifier");
3675 if (parser->tok == ',')
3677 if (parser->tok == '}')
3679 if (parser->tok != '=') {
3680 parseerror(parser, "expected `=`, `}` or comma after identifier");
3684 if (!parser_next(parser)) {
3685 parseerror(parser, "expected expression after `=`");
3689 /* We got a value! */
3690 old = parse_expression_leave(parser, true, false, false);
3691 asvalue = (ast_value*)old;
3692 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3693 compile_error(ast_ctx(var), "constant value or expression expected");
3696 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3698 if (parser->tok == '}')
3700 if (parser->tok != ',') {
3701 parseerror(parser, "expected `}` or comma after expression");
3706 /* patch them all (for reversed attribute) */
3709 for (i = 0; i < vec_size(values); i++)
3710 values[i]->constval.vfloat = vec_size(values) - i - 1;
3713 if (parser->tok != '}') {
3714 parseerror(parser, "internal error: breaking without `}`");
3718 if (!parser_next(parser) || parser->tok != ';') {
3719 parseerror(parser, "expected semicolon after enumeration");
3723 if (!parser_next(parser)) {
3724 parseerror(parser, "parse error after enumeration");
3736 static bool parse_block_into(parser_t *parser, ast_block *block)
3740 parser_enterblock(parser);
3742 if (!parser_next(parser)) { /* skip the '{' */
3743 parseerror(parser, "expected function body");
3747 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3749 ast_expression *expr = NULL;
3750 if (parser->tok == '}')
3753 if (!parse_statement(parser, block, &expr, false)) {
3754 /* parseerror(parser, "parse error"); */
3760 if (!ast_block_add_expr(block, expr)) {
3767 if (parser->tok != '}') {
3770 (void)parser_next(parser);
3774 if (!parser_leaveblock(parser))
3776 return retval && !!block;
3779 static ast_block* parse_block(parser_t *parser)
3782 block = ast_block_new(parser_ctx(parser));
3785 if (!parse_block_into(parser, block)) {
3786 ast_block_delete(block);
3792 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3794 if (parser->tok == '{') {
3795 *out = (ast_expression*)parse_block(parser);
3798 return parse_statement(parser, NULL, out, false);
3801 static bool create_vector_members(ast_value *var, ast_member **me)
3804 size_t len = strlen(var->name);
3806 for (i = 0; i < 3; ++i) {
3807 char *name = (char*)mem_a(len+3);
3808 memcpy(name, var->name, len);
3810 name[len+1] = 'x'+i;
3812 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3821 do { ast_member_delete(me[--i]); } while(i);
3825 static bool parse_function_body(parser_t *parser, ast_value *var)
3827 ast_block *block = NULL;
3832 ast_expression *framenum = NULL;
3833 ast_expression *nextthink = NULL;
3834 /* None of the following have to be deleted */
3835 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3836 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3837 bool has_frame_think;
3841 has_frame_think = false;
3842 old = parser->function;
3844 if (var->expression.flags & AST_FLAG_ALIAS) {
3845 parseerror(parser, "function aliases cannot have bodies");
3849 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3850 parseerror(parser, "gotos/labels leaking");
3854 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
3855 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3856 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
3862 if (parser->tok == '[') {
3863 /* got a frame definition: [ framenum, nextthink ]
3864 * this translates to:
3865 * self.frame = framenum;
3866 * self.nextthink = time + 0.1;
3867 * self.think = nextthink;
3871 fld_think = parser_find_field(parser, "think");
3872 fld_nextthink = parser_find_field(parser, "nextthink");
3873 fld_frame = parser_find_field(parser, "frame");
3874 if (!fld_think || !fld_nextthink || !fld_frame) {
3875 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3876 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3879 gbl_time = parser_find_global(parser, "time");
3880 gbl_self = parser_find_global(parser, "self");
3881 if (!gbl_time || !gbl_self) {
3882 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3883 parseerror(parser, "please declare the following globals: `time`, `self`");
3887 if (!parser_next(parser))
3890 framenum = parse_expression_leave(parser, true, false, false);
3892 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3895 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3896 ast_unref(framenum);
3897 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3901 if (parser->tok != ',') {
3902 ast_unref(framenum);
3903 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3904 parseerror(parser, "Got a %i\n", parser->tok);
3908 if (!parser_next(parser)) {
3909 ast_unref(framenum);
3913 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3915 /* qc allows the use of not-yet-declared functions here
3916 * - this automatically creates a prototype */
3917 ast_value *thinkfunc;
3918 ast_expression *functype = fld_think->next;
3920 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
3921 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
3922 ast_unref(framenum);
3923 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3926 ast_type_adopt(thinkfunc, functype);
3928 if (!parser_next(parser)) {
3929 ast_unref(framenum);
3930 ast_delete(thinkfunc);
3934 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3936 nextthink = (ast_expression*)thinkfunc;
3939 nextthink = parse_expression_leave(parser, true, false, false);
3941 ast_unref(framenum);
3942 parseerror(parser, "expected a think-function in [frame,think] notation");
3947 if (!ast_istype(nextthink, ast_value)) {
3948 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3952 if (retval && parser->tok != ']') {
3953 parseerror(parser, "expected closing `]` for [frame,think] notation");
3957 if (retval && !parser_next(parser)) {
3961 if (retval && parser->tok != '{') {
3962 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3967 ast_unref(nextthink);
3968 ast_unref(framenum);
3972 has_frame_think = true;
3975 block = ast_block_new(parser_ctx(parser));
3977 parseerror(parser, "failed to allocate block");
3978 if (has_frame_think) {
3979 ast_unref(nextthink);
3980 ast_unref(framenum);
3985 if (has_frame_think) {
3986 if (!OPTS_FLAG(EMULATE_STATE)) {
3987 ast_state *state_op = ast_state_new(parser_ctx(parser), framenum, nextthink);
3988 if (!ast_block_add_expr(block, (ast_expression*)state_op)) {
3989 parseerror(parser, "failed to generate state op for [frame,think]");
3990 ast_unref(nextthink);
3991 ast_unref(framenum);
3996 /* emulate OP_STATE in code: */
3998 ast_expression *self_frame;
3999 ast_expression *self_nextthink;
4000 ast_expression *self_think;
4001 ast_expression *time_plus_1;
4002 ast_store *store_frame;
4003 ast_store *store_nextthink;
4004 ast_store *store_think;
4006 float frame_delta = 1.0f / (float)OPTS_OPTION_U32(OPTION_STATE_FPS);
4008 ctx = parser_ctx(parser);
4009 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
4010 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
4011 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
4013 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
4014 gbl_time, (ast_expression*)fold_constgen_float(parser->fold, frame_delta, false));
4016 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
4017 if (self_frame) ast_delete(self_frame);
4018 if (self_nextthink) ast_delete(self_nextthink);
4019 if (self_think) ast_delete(self_think);
4020 if (time_plus_1) ast_delete(time_plus_1);
4026 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
4027 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
4028 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
4031 ast_delete(self_frame);
4034 if (!store_nextthink) {
4035 ast_delete(self_nextthink);
4039 ast_delete(self_think);
4043 if (store_frame) ast_delete(store_frame);
4044 if (store_nextthink) ast_delete(store_nextthink);
4045 if (store_think) ast_delete(store_think);
4048 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
4049 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
4050 !ast_block_add_expr(block, (ast_expression*)store_think))
4057 parseerror(parser, "failed to generate code for [frame,think]");
4058 ast_unref(nextthink);
4059 ast_unref(framenum);
4066 if (var->hasvalue) {
4067 if (!(var->expression.flags & AST_FLAG_ACCUMULATE)) {
4068 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
4069 ast_block_delete(block);
4072 func = var->constval.vfunc;
4075 parseerror(parser, "internal error: NULL function: `%s`", var->name);
4076 ast_block_delete(block);
4080 func = ast_function_new(ast_ctx(var), var->name, var);
4083 parseerror(parser, "failed to allocate function for `%s`", var->name);
4084 ast_block_delete(block);
4087 vec_push(parser->functions, func);
4090 parser_enterblock(parser);
4092 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
4094 ast_value *param = var->expression.params[parami];
4097 if (param->expression.vtype != TYPE_VECTOR &&
4098 (param->expression.vtype != TYPE_FIELD ||
4099 param->expression.next->vtype != TYPE_VECTOR))
4104 if (!create_vector_members(param, me)) {
4105 ast_block_delete(block);
4109 for (e = 0; e < 3; ++e) {
4110 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4111 ast_block_collect(block, (ast_expression*)me[e]);
4115 if (var->argcounter && !func->argc) {
4116 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4117 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4121 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC && !func->varargs) {
4123 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4124 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4125 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4126 varargs->expression.count = 0;
4127 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4128 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4129 ast_delete(varargs);
4130 ast_block_delete(block);
4133 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4134 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4135 ast_delete(varargs);
4136 ast_block_delete(block);
4139 func->varargs = varargs;
4140 func->fixedparams = (ast_value*)fold_constgen_float(parser->fold, vec_size(var->expression.params), false);
4143 parser->function = func;
4144 if (!parse_block_into(parser, block)) {
4145 ast_block_delete(block);
4149 vec_push(func->blocks, block);
4151 parser->function = old;
4152 if (!parser_leaveblock(parser))
4154 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4155 parseerror(parser, "internal error: local scopes left");
4159 if (parser->tok == ';')
4160 return parser_next(parser);
4161 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4162 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4166 (void)!parser_leaveblock(parser);
4167 vec_pop(parser->functions);
4168 ast_function_delete(func);
4169 var->constval.vfunc = NULL;
4172 parser->function = old;
4176 static ast_expression *array_accessor_split(
4181 ast_expression *left,
4182 ast_expression *right
4188 lex_ctx_t ctx = ast_ctx(array);
4190 if (!left || !right) {
4191 if (left) ast_delete(left);
4192 if (right) ast_delete(right);
4196 cmp = ast_binary_new(ctx, INSTR_LT,
4197 (ast_expression*)index,
4198 (ast_expression*)fold_constgen_float(parser->fold, middle, false));
4202 parseerror(parser, "internal error: failed to create comparison for array setter");
4206 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4208 ast_delete(cmp); /* will delete left and right */
4209 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4213 return (ast_expression*)ifthen;
4216 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4218 lex_ctx_t ctx = ast_ctx(array);
4220 if (from+1 == afterend) {
4221 /* set this value */
4224 ast_array_index *subscript;
4226 int assignop = type_store_instr[value->expression.vtype];
4228 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4229 assignop = INSTR_STORE_V;
4231 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from, false));
4235 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4237 ast_delete(subscript);
4241 block = ast_block_new(ctx);
4247 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4252 ret = ast_return_new(ctx, NULL);
4258 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4263 return (ast_expression*)block;
4265 ast_expression *left, *right;
4266 size_t diff = afterend - from;
4267 size_t middle = from + diff/2;
4268 left = array_setter_node(parser, array, index, value, from, middle);
4269 right = array_setter_node(parser, array, index, value, middle, afterend);
4270 return array_accessor_split(parser, array, index, middle, left, right);
4274 static ast_expression *array_field_setter_node(
4283 lex_ctx_t ctx = ast_ctx(array);
4285 if (from+1 == afterend) {
4286 /* set this value */
4289 ast_entfield *entfield;
4290 ast_array_index *subscript;
4292 int assignop = type_storep_instr[value->expression.vtype];
4294 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4295 assignop = INSTR_STOREP_V;
4297 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from, false));
4301 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4302 subscript->expression.vtype = TYPE_FIELD;
4304 entfield = ast_entfield_new_force(ctx,
4305 (ast_expression*)entity,
4306 (ast_expression*)subscript,
4307 (ast_expression*)subscript);
4309 ast_delete(subscript);
4313 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4315 ast_delete(entfield);
4319 block = ast_block_new(ctx);
4325 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4330 ret = ast_return_new(ctx, NULL);
4336 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4341 return (ast_expression*)block;
4343 ast_expression *left, *right;
4344 size_t diff = afterend - from;
4345 size_t middle = from + diff/2;
4346 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4347 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4348 return array_accessor_split(parser, array, index, middle, left, right);
4352 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4354 lex_ctx_t ctx = ast_ctx(array);
4356 if (from+1 == afterend) {
4358 ast_array_index *subscript;
4360 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from, false));
4364 ret = ast_return_new(ctx, (ast_expression*)subscript);
4366 ast_delete(subscript);
4370 return (ast_expression*)ret;
4372 ast_expression *left, *right;
4373 size_t diff = afterend - from;
4374 size_t middle = from + diff/2;
4375 left = array_getter_node(parser, array, index, from, middle);
4376 right = array_getter_node(parser, array, index, middle, afterend);
4377 return array_accessor_split(parser, array, index, middle, left, right);
4381 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4383 ast_function *func = NULL;
4384 ast_value *fval = NULL;
4385 ast_block *body = NULL;
4387 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4389 parseerror(parser, "failed to create accessor function value");
4392 fval->expression.flags &= ~(AST_FLAG_COVERAGE_MASK);
4394 func = ast_function_new(ast_ctx(array), funcname, fval);
4397 parseerror(parser, "failed to create accessor function node");
4401 body = ast_block_new(ast_ctx(array));
4403 parseerror(parser, "failed to create block for array accessor");
4409 vec_push(func->blocks, body);
4412 vec_push(parser->accessors, fval);
4417 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4419 ast_value *index = NULL;
4420 ast_value *value = NULL;
4424 if (!ast_istype(array->expression.next, ast_value)) {
4425 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4429 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4431 func = fval->constval.vfunc;
4432 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4434 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4435 value = ast_value_copy((ast_value*)array->expression.next);
4437 if (!index || !value) {
4438 parseerror(parser, "failed to create locals for array accessor");
4441 (void)!ast_value_set_name(value, "value"); /* not important */
4442 vec_push(fval->expression.params, index);
4443 vec_push(fval->expression.params, value);
4445 array->setter = fval;
4448 if (index) ast_delete(index);
4449 if (value) ast_delete(value);
4455 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4457 ast_expression *root = NULL;
4458 root = array_setter_node(parser, array,
4459 array->setter->expression.params[0],
4460 array->setter->expression.params[1],
4461 0, array->expression.count);
4463 parseerror(parser, "failed to build accessor search tree");
4466 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4473 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4475 if (!parser_create_array_setter_proto(parser, array, funcname))
4477 return parser_create_array_setter_impl(parser, array);
4480 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4482 ast_expression *root = NULL;
4483 ast_value *entity = NULL;
4484 ast_value *index = NULL;
4485 ast_value *value = NULL;
4489 if (!ast_istype(array->expression.next, ast_value)) {
4490 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4494 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4496 func = fval->constval.vfunc;
4497 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4499 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4500 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4501 value = ast_value_copy((ast_value*)array->expression.next);
4502 if (!entity || !index || !value) {
4503 parseerror(parser, "failed to create locals for array accessor");
4506 (void)!ast_value_set_name(value, "value"); /* not important */
4507 vec_push(fval->expression.params, entity);
4508 vec_push(fval->expression.params, index);
4509 vec_push(fval->expression.params, value);
4511 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4513 parseerror(parser, "failed to build accessor search tree");
4517 array->setter = fval;
4518 return ast_block_add_expr(func->blocks[0], root);
4520 if (entity) ast_delete(entity);
4521 if (index) ast_delete(index);
4522 if (value) ast_delete(value);
4523 if (root) ast_delete(root);
4529 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4531 ast_value *index = NULL;
4535 /* NOTE: checking array->expression.next rather than elemtype since
4536 * for fields elemtype is a temporary fieldtype.
4538 if (!ast_istype(array->expression.next, ast_value)) {
4539 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4543 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4545 func = fval->constval.vfunc;
4546 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4548 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4551 parseerror(parser, "failed to create locals for array accessor");
4554 vec_push(fval->expression.params, index);
4556 array->getter = fval;
4559 if (index) ast_delete(index);
4565 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4567 ast_expression *root = NULL;
4569 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4571 parseerror(parser, "failed to build accessor search tree");
4574 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4581 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4583 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4585 return parser_create_array_getter_impl(parser, array);
4588 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4596 bool variadic = false;
4597 ast_value *varparam = NULL;
4598 char *argcounter = NULL;
4600 ctx = parser_ctx(parser);
4602 /* for the sake of less code we parse-in in this function */
4603 if (!parser_next(parser)) {
4605 parseerror(parser, "expected parameter list");
4611 /* parse variables until we hit a closing paren */
4612 while (parser->tok != ')') {
4613 bool is_varargs = false;
4616 /* there must be commas between them */
4617 if (parser->tok != ',') {
4618 parseerror(parser, "expected comma or end of parameter list");
4621 if (!parser_next(parser)) {
4622 parseerror(parser, "expected parameter");
4628 param = parse_typename(parser, NULL, NULL, &is_varargs);
4629 if (!param && !is_varargs)
4632 /* '...' indicates a varargs function */
4634 if (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");
4646 vec_push(params, param);
4647 if (param->expression.vtype >= TYPE_VARIANT) {
4648 char tname[1024]; /* typename is reserved in C++ */
4649 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4650 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4653 /* type-restricted varargs */
4654 if (parser->tok == TOKEN_DOTS) {
4656 varparam = vec_last(params);
4658 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4659 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4662 if (parser->tok == TOKEN_IDENT) {
4663 argcounter = util_strdup(parser_tokval(parser));
4664 ast_value_set_name(param, argcounter);
4665 if (!parser_next(parser) || parser->tok != ')') {
4666 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4671 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC && param->name[0] == '<') {
4672 parseerror(parser, "parameter name omitted");
4678 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4682 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4683 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4686 if (!parser_next(parser)) {
4687 parseerror(parser, "parse error after typename");
4691 /* now turn 'var' into a function type */
4692 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4693 fval->expression.next = (ast_expression*)var;
4695 fval->expression.flags |= AST_FLAG_VARIADIC;
4698 var->expression.params = params;
4699 var->expression.varparam = (ast_expression*)varparam;
4700 var->argcounter = argcounter;
4709 ast_delete(varparam);
4711 for (i = 0; i < vec_size(params); ++i)
4712 ast_delete(params[i]);
4717 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4719 ast_expression *cexp;
4720 ast_value *cval, *tmp;
4723 ctx = parser_ctx(parser);
4725 if (!parser_next(parser)) {
4727 parseerror(parser, "expected array-size");
4731 if (parser->tok != ']') {
4732 cexp = parse_expression_leave(parser, true, false, false);
4734 if (!cexp || !ast_istype(cexp, ast_value)) {
4738 parseerror(parser, "expected array-size as constant positive integer");
4741 cval = (ast_value*)cexp;
4748 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4749 tmp->expression.next = (ast_expression*)var;
4753 if (cval->expression.vtype == TYPE_INTEGER)
4754 tmp->expression.count = cval->constval.vint;
4755 else if (cval->expression.vtype == TYPE_FLOAT)
4756 tmp->expression.count = cval->constval.vfloat;
4760 parseerror(parser, "array-size must be a positive integer constant");
4766 var->expression.count = -1;
4767 var->expression.flags |= AST_FLAG_ARRAY_INIT;
4770 if (parser->tok != ']') {
4772 parseerror(parser, "expected ']' after array-size");
4775 if (!parser_next(parser)) {
4777 parseerror(parser, "error after parsing array size");
4783 /* Parse a complete typename.
4784 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4785 * but when parsing variables separated by comma
4786 * 'storebase' should point to where the base-type should be kept.
4787 * The base type makes up every bit of type information which comes *before* the
4790 * NOTE: The value must either be named, have a NULL name, or a name starting
4791 * with '<'. In the first case, this will be the actual variable or type
4792 * name, in the other cases it is assumed that the name will appear
4793 * later, and an error is generated otherwise.
4795 * The following will be parsed in its entirety:
4797 * The 'basetype' in this case is 'void()'
4798 * and if there's a comma after it, say:
4800 * then the type-information 'void()' can be stored in 'storebase'
4802 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef, bool *is_vararg)
4804 ast_value *var, *tmp;
4807 const char *name = NULL;
4808 bool isfield = false;
4809 bool wasarray = false;
4810 size_t morefields = 0;
4812 bool vararg = (parser->tok == TOKEN_DOTS);
4814 ctx = parser_ctx(parser);
4816 /* types may start with a dot */
4817 if (parser->tok == '.' || parser->tok == TOKEN_DOTS) {
4819 if (parser->tok == TOKEN_DOTS)
4821 /* if we parsed a dot we need a typename now */
4822 if (!parser_next(parser)) {
4823 parseerror(parser, "expected typename for field definition");
4827 /* Further dots are handled seperately because they won't be part of the
4831 if (parser->tok == '.')
4833 else if (parser->tok == TOKEN_DOTS)
4838 if (!parser_next(parser)) {
4839 parseerror(parser, "expected typename for field definition");
4844 if (parser->tok == TOKEN_IDENT)
4845 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4846 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4847 if (vararg && is_vararg) {
4851 parseerror(parser, "expected typename");
4855 /* generate the basic type value */
4856 if (cached_typedef) {
4857 var = ast_value_copy(cached_typedef);
4858 ast_value_set_name(var, "<type(from_def)>");
4860 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4862 for (; morefields; --morefields) {
4863 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4864 tmp->expression.next = (ast_expression*)var;
4868 /* do not yet turn into a field - remember:
4869 * .void() foo; is a field too
4870 * .void()() foo; is a function
4874 if (!parser_next(parser)) {
4876 parseerror(parser, "parse error after typename");
4880 /* an opening paren now starts the parameter-list of a function
4881 * this is where original-QC has parameter lists.
4882 * We allow a single parameter list here.
4883 * Much like fteqcc we don't allow `float()() x`
4885 if (parser->tok == '(') {
4886 var = parse_parameter_list(parser, var);
4891 /* store the base if requested */
4893 *storebase = ast_value_copy(var);
4895 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4896 tmp->expression.next = (ast_expression*)*storebase;
4901 /* there may be a name now */
4902 if (parser->tok == TOKEN_IDENT || parser->tok == TOKEN_KEYWORD) {
4903 if (!strcmp(parser_tokval(parser), "break"))
4904 (void)!parsewarning(parser, WARN_BREAKDEF, "break definition ignored (suggest removing it)");
4905 else if (parser->tok == TOKEN_KEYWORD)
4908 name = util_strdup(parser_tokval(parser));
4911 if (!parser_next(parser)) {
4914 parseerror(parser, "error after variable or field declaration");
4920 /* now this may be an array */
4921 if (parser->tok == '[') {
4923 var = parse_arraysize(parser, var);
4925 if (name) mem_d(name);
4930 /* This is the point where we can turn it into a field */
4932 /* turn it into a field if desired */
4933 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4934 tmp->expression.next = (ast_expression*)var;
4938 /* now there may be function parens again */
4939 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4940 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4941 if (parser->tok == '(' && wasarray)
4942 parseerror(parser, "arrays as part of a return type is not supported");
4943 while (parser->tok == '(') {
4944 var = parse_parameter_list(parser, var);
4946 if (name) mem_d(name);
4951 /* finally name it */
4953 if (!ast_value_set_name(var, name)) {
4956 parseerror(parser, "internal error: failed to set name");
4959 /* free the name, ast_value_set_name duplicates */
4966 static bool parse_typedef(parser_t *parser)
4968 ast_value *typevar, *oldtype;
4969 ast_expression *old;
4971 typevar = parse_typename(parser, NULL, NULL, NULL);
4976 /* while parsing types, the ast_value's get named '<something>' */
4977 if (!typevar->name || typevar->name[0] == '<') {
4978 parseerror(parser, "missing name in typedef");
4979 ast_delete(typevar);
4983 if ( (old = parser_find_var(parser, typevar->name)) ) {
4984 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4985 " -> `%s` has been declared here: %s:%i",
4986 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4987 ast_delete(typevar);
4991 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4992 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4993 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4994 ast_delete(typevar);
4998 vec_push(parser->_typedefs, typevar);
4999 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
5001 if (parser->tok != ';') {
5002 parseerror(parser, "expected semicolon after typedef");
5005 if (!parser_next(parser)) {
5006 parseerror(parser, "parse error after typedef");
5013 static const char *cvq_to_str(int cvq) {
5015 case CV_NONE: return "none";
5016 case CV_VAR: return "`var`";
5017 case CV_CONST: return "`const`";
5018 default: return "<INVALID>";
5022 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
5025 if (proto->cvq != var->cvq) {
5026 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
5027 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5028 parser->tok == '='))
5030 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
5031 "`%s` declared with different qualifiers: %s\n"
5032 " -> previous declaration here: %s:%i uses %s",
5033 var->name, cvq_to_str(var->cvq),
5034 ast_ctx(proto).file, ast_ctx(proto).line,
5035 cvq_to_str(proto->cvq));
5038 av = (var ->expression.flags & AST_FLAG_NORETURN);
5039 ao = (proto->expression.flags & AST_FLAG_NORETURN);
5041 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
5042 "`%s` declared with different attributes%s\n"
5043 " -> previous declaration here: %s:%i",
5044 var->name, (av ? ": noreturn" : ""),
5045 ast_ctx(proto).file, ast_ctx(proto).line,
5046 (ao ? ": noreturn" : ""));
5051 static bool create_array_accessors(parser_t *parser, ast_value *var)
5054 util_snprintf(name, sizeof(name), "%s##SET", var->name);
5055 if (!parser_create_array_setter(parser, var, name))
5057 util_snprintf(name, sizeof(name), "%s##GET", var->name);
5058 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5063 static bool parse_array(parser_t *parser, ast_value *array)
5066 if (array->initlist) {
5067 parseerror(parser, "array already initialized elsewhere");
5070 if (!parser_next(parser)) {
5071 parseerror(parser, "parse error in array initializer");
5075 while (parser->tok != '}') {
5076 ast_value *v = (ast_value*)parse_expression_leave(parser, true, false, false);
5079 if (!ast_istype(v, ast_value) || !v->hasvalue || v->cvq != CV_CONST) {
5081 parseerror(parser, "initializing element must be a compile time constant");
5084 vec_push(array->initlist, v->constval);
5085 if (v->expression.vtype == TYPE_STRING) {
5086 array->initlist[i].vstring = util_strdupe(array->initlist[i].vstring);
5090 if (parser->tok == '}')
5092 if (parser->tok != ',' || !parser_next(parser)) {
5093 parseerror(parser, "expected comma or '}' in element list");
5097 if (!parser_next(parser) || parser->tok != ';') {
5098 parseerror(parser, "expected semicolon after initializer, got %s");
5102 if (!parser_next(parser)) {
5103 parseerror(parser, "parse error after initializer");
5108 if (array->expression.flags & AST_FLAG_ARRAY_INIT) {
5109 if (array->expression.count != (size_t)-1) {
5110 parseerror(parser, "array `%s' has already been initialized with %u elements",
5111 array->name, (unsigned)array->expression.count);
5113 array->expression.count = vec_size(array->initlist);
5114 if (!create_array_accessors(parser, array))
5120 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)
5124 ast_expression *old;
5128 ast_value *basetype = NULL;
5130 bool isparam = false;
5131 bool isvector = false;
5132 bool cleanvar = true;
5133 bool wasarray = false;
5135 ast_member *me[3] = { NULL, NULL, NULL };
5136 ast_member *last_me[3] = { NULL, NULL, NULL };
5138 if (!localblock && is_static)
5139 parseerror(parser, "`static` qualifier is not supported in global scope");
5141 /* get the first complete variable */
5142 var = parse_typename(parser, &basetype, cached_typedef, NULL);
5145 ast_delete(basetype);
5149 /* while parsing types, the ast_value's get named '<something>' */
5150 if (!var->name || var->name[0] == '<') {
5151 parseerror(parser, "declaration does not declare anything");
5153 ast_delete(basetype);
5161 /* Part 0: finish the type */
5162 if (parser->tok == '(') {
5163 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5164 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5165 var = parse_parameter_list(parser, var);
5171 /* we only allow 1-dimensional arrays */
5172 if (parser->tok == '[') {
5174 var = parse_arraysize(parser, var);
5180 if (parser->tok == '(' && wasarray) {
5181 parseerror(parser, "arrays as part of a return type is not supported");
5182 /* we'll still parse the type completely for now */
5184 /* for functions returning functions */
5185 while (parser->tok == '(') {
5186 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5187 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5188 var = parse_parameter_list(parser, var);
5195 var->cvq = qualifier;
5196 if (qflags & AST_FLAG_COVERAGE) /* specified in QC, drop our default */
5197 var->expression.flags &= ~(AST_FLAG_COVERAGE_MASK);
5198 var->expression.flags |= qflags;
5201 * store the vstring back to var for alias and
5202 * deprecation messages.
5204 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5205 var->expression.flags & AST_FLAG_ALIAS)
5206 var->desc = vstring;
5208 if (parser_find_global(parser, var->name) && var->expression.flags & AST_FLAG_ALIAS) {
5209 parseerror(parser, "function aliases cannot be forward declared");
5216 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5217 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5218 * is then filled with the previous definition and the parameter-names replaced.
5220 if (!strcmp(var->name, "nil")) {
5221 if (OPTS_FLAG(UNTYPED_NIL)) {
5222 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5223 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5225 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5228 /* Deal with end_sys_ vars */
5230 if (!strcmp(var->name, "end_sys_globals")) {
5232 parser->crc_globals = vec_size(parser->globals);
5235 else if (!strcmp(var->name, "end_sys_fields")) {
5237 parser->crc_fields = vec_size(parser->fields);
5240 if (was_end && var->expression.vtype == TYPE_FIELD) {
5241 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5242 "global '%s' hint should not be a field",
5243 parser_tokval(parser)))
5250 if (!nofields && var->expression.vtype == TYPE_FIELD)
5252 /* deal with field declarations */
5253 old = parser_find_field(parser, var->name);
5255 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5256 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5265 parseerror(parser, "field `%s` already declared here: %s:%i",
5266 var->name, ast_ctx(old).file, ast_ctx(old).line);
5271 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5272 (old = parser_find_global(parser, var->name)))
5274 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5275 parseerror(parser, "field `%s` already declared here: %s:%i",
5276 var->name, ast_ctx(old).file, ast_ctx(old).line);
5283 /* deal with other globals */
5284 old = parser_find_global(parser, var->name);
5285 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5287 /* This is a function which had a prototype */
5288 if (!ast_istype(old, ast_value)) {
5289 parseerror(parser, "internal error: prototype is not an ast_value");
5293 proto = (ast_value*)old;
5294 proto->desc = var->desc;
5295 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5296 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5298 ast_ctx(proto).file, ast_ctx(proto).line);
5302 /* we need the new parameter-names */
5303 for (i = 0; i < vec_size(proto->expression.params); ++i)
5304 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5305 if (!parser_check_qualifiers(parser, var, proto)) {
5312 proto->expression.flags |= var->expression.flags;
5320 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5321 "global `%s` already declared here: %s:%i",
5322 var->name, ast_ctx(old).file, ast_ctx(old).line))
5327 if (old->flags & AST_FLAG_FINAL_DECL) {
5328 parseerror(parser, "cannot redeclare variable `%s`, declared final here: %s:%i",
5329 var->name, ast_ctx(old).file, ast_ctx(old).line);
5333 proto = (ast_value*)old;
5334 if (!ast_istype(old, ast_value)) {
5335 parseerror(parser, "internal error: not an ast_value");
5340 if (!parser_check_qualifiers(parser, var, proto)) {
5345 proto->expression.flags |= var->expression.flags;
5346 /* copy the context for finals,
5347 * so the error can show where it was actually made 'final'
5349 if (proto->expression.flags & AST_FLAG_FINAL_DECL)
5350 ast_ctx(old) = ast_ctx(var);
5354 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5355 (old = parser_find_field(parser, var->name)))
5357 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5358 parseerror(parser, "global `%s` already declared here: %s:%i",
5359 var->name, ast_ctx(old).file, ast_ctx(old).line);
5366 else /* it's not a global */
5368 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5369 if (old && !isparam) {
5370 parseerror(parser, "local `%s` already declared here: %s:%i",
5371 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5375 /* doing this here as the above is just for a single scope */
5376 old = parser_find_local(parser, var->name, 0, &isparam);
5377 if (old && isparam) {
5378 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5379 "local `%s` is shadowing a parameter", var->name))
5381 parseerror(parser, "local `%s` already declared here: %s:%i",
5382 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5386 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5388 if (ast_istype(old, ast_value))
5389 var = proto = (ast_value*)old;
5398 /* in a noref section we simply bump the usecount */
5399 if (noref || parser->noref)
5403 * Create the global/local, and deal with vector types.
5406 if (var->expression.vtype == TYPE_VECTOR)
5408 else if (var->expression.vtype == TYPE_FIELD &&
5409 var->expression.next->vtype == TYPE_VECTOR)
5413 if (!create_vector_members(var, me)) {
5420 /* deal with global variables, fields, functions */
5421 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5422 var->isfield = true;
5423 vec_push(parser->fields, (ast_expression*)var);
5424 util_htset(parser->htfields, var->name, var);
5426 for (i = 0; i < 3; ++i) {
5427 vec_push(parser->fields, (ast_expression*)me[i]);
5428 util_htset(parser->htfields, me[i]->name, me[i]);
5433 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5434 parser_addglobal(parser, var->name, (ast_expression*)var);
5436 for (i = 0; i < 3; ++i) {
5437 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5441 ast_expression *find = parser_find_global(parser, var->desc);
5444 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5448 if (!ast_compare_type((ast_expression*)var, find)) {
5452 ast_type_to_string(find, ty1, sizeof(ty1));
5453 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5455 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5461 util_htset(parser->aliases, var->name, find);
5463 /* generate aliases for vector components */
5467 util_asprintf(&buffer[0], "%s_x", var->desc);
5468 util_asprintf(&buffer[1], "%s_y", var->desc);
5469 util_asprintf(&buffer[2], "%s_z", var->desc);
5471 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5472 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5473 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5483 /* a static adds itself to be generated like any other global
5484 * but is added to the local namespace instead
5486 char *defname = NULL;
5487 size_t prefix_len, ln;
5490 ln = strlen(parser->function->name);
5491 vec_append(defname, ln, parser->function->name);
5493 vec_append(defname, 2, "::");
5494 /* remember the length up to here */
5495 prefix_len = vec_size(defname);
5497 /* Add it to the local scope */
5498 util_htset(vec_last(parser->variables), var->name, (void*)var);
5500 /* now rename the global */
5501 ln = strlen(var->name);
5502 vec_append(defname, ln, var->name);
5503 /* if a variable of that name already existed, add the
5505 * The counter is incremented either way.
5507 sn_size = vec_size(parser->function->static_names);
5508 for (sn = 0; sn != sn_size; ++sn) {
5509 if (strcmp(parser->function->static_names[sn], var->name) == 0)
5512 if (sn != sn_size) {
5514 int len = util_asprintf(&num, "#%u", parser->function->static_count);
5515 vec_append(defname, len, num);
5519 vec_push(parser->function->static_names, util_strdup(var->name));
5520 parser->function->static_count++;
5521 ast_value_set_name(var, defname);
5523 /* push it to the to-be-generated globals */
5524 vec_push(parser->globals, (ast_expression*)var);
5526 /* same game for the vector members */
5528 for (i = 0; i < 3; ++i) {
5529 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5531 vec_shrinkto(defname, prefix_len);
5532 ln = strlen(me[i]->name);
5533 vec_append(defname, ln, me[i]->name);
5534 ast_member_set_name(me[i], defname);
5536 vec_push(parser->globals, (ast_expression*)me[i]);
5541 vec_push(localblock->locals, var);
5542 parser_addlocal(parser, var->name, (ast_expression*)var);
5544 for (i = 0; i < 3; ++i) {
5545 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5546 ast_block_collect(localblock, (ast_expression*)me[i]);
5552 memcpy(last_me, me, sizeof(me));
5553 me[0] = me[1] = me[2] = NULL;
5558 if (var->expression.vtype == TYPE_ARRAY) {
5559 if (var->expression.count != (size_t)-1) {
5560 if (!create_array_accessors(parser, var))
5564 else if (!localblock && !nofields &&
5565 var->expression.vtype == TYPE_FIELD &&
5566 var->expression.next->vtype == TYPE_ARRAY)
5569 ast_expression *telem;
5571 ast_value *array = (ast_value*)var->expression.next;
5573 if (!ast_istype(var->expression.next, ast_value)) {
5574 parseerror(parser, "internal error: field element type must be an ast_value");
5578 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5579 if (!parser_create_array_field_setter(parser, array, name))
5582 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5583 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5584 tfield->expression.next = telem;
5585 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5586 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5594 if (parser->tok == ';') {
5595 ast_delete(basetype);
5596 if (!parser_next(parser)) {
5597 parseerror(parser, "error after variable declaration");
5603 if (parser->tok == ',')
5607 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5610 parseerror(parser, "missing comma or semicolon while parsing variables");
5614 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5615 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5616 "initializing expression turns variable `%s` into a constant in this standard",
5623 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5624 if (parser->tok != '=') {
5625 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5629 if (!parser_next(parser)) {
5630 parseerror(parser, "error parsing initializer");
5634 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5635 parseerror(parser, "expected '=' before function body in this standard");
5638 if (parser->tok == '#') {
5639 ast_function *func = NULL;
5640 ast_value *number = NULL;
5646 parseerror(parser, "cannot declare builtins within functions");
5649 if (var->expression.vtype != TYPE_FUNCTION) {
5650 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5653 if (!parser_next(parser)) {
5654 parseerror(parser, "expected builtin number");
5658 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5659 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5661 parseerror(parser, "builtin number expected");
5664 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5667 parseerror(parser, "builtin number must be a compile time constant");
5670 if (number->expression.vtype == TYPE_INTEGER)
5671 builtin_num = number->constval.vint;
5672 else if (number->expression.vtype == TYPE_FLOAT)
5673 builtin_num = number->constval.vfloat;
5676 parseerror(parser, "builtin number must be an integer constant");
5681 fractional = modff(builtin_num, &integral);
5682 if (builtin_num < 0 || fractional != 0) {
5683 parseerror(parser, "builtin number must be an integer greater than zero");
5687 /* we only want the integral part anyways */
5688 builtin_num = integral;
5689 } else if (parser->tok == TOKEN_INTCONST) {
5690 builtin_num = parser_token(parser)->constval.i;
5692 parseerror(parser, "builtin number must be a compile time constant");
5696 if (var->hasvalue) {
5697 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5698 "builtin `%s` has already been defined\n"
5699 " -> previous declaration here: %s:%i",
5700 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5704 func = ast_function_new(ast_ctx(var), var->name, var);
5706 parseerror(parser, "failed to allocate function for `%s`", var->name);
5709 vec_push(parser->functions, func);
5711 func->builtin = -builtin_num-1;
5714 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5715 ? (parser->tok != ',' && parser->tok != ';')
5716 : (!parser_next(parser)))
5718 parseerror(parser, "expected comma or semicolon");
5720 ast_function_delete(func);
5721 var->constval.vfunc = NULL;
5725 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
5728 /* Note that fteqcc and most others don't even *have*
5729 * local arrays, so this is not a high priority.
5731 parseerror(parser, "TODO: initializers for local arrays");
5735 var->hasvalue = true;
5736 if (!parse_array(parser, var))
5739 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
5742 parseerror(parser, "cannot declare functions within functions");
5747 ast_ctx(proto) = parser_ctx(parser);
5749 if (!parse_function_body(parser, var))
5751 ast_delete(basetype);
5752 for (i = 0; i < vec_size(parser->gotos); ++i)
5753 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5754 vec_free(parser->gotos);
5755 vec_free(parser->labels);
5758 ast_expression *cexp;
5760 bool folded_const = false;
5762 cexp = parse_expression_leave(parser, true, false, false);
5765 cval = ast_istype(cexp, ast_value) ? (ast_value*)cexp : NULL;
5767 /* deal with foldable constants: */
5769 var->cvq == CV_CONST && cval && cval->hasvalue && cval->cvq == CV_CONST && !cval->isfield)
5771 /* remove it from the current locals */
5773 for (i = 0; i < 3; ++i) {
5774 vec_pop(parser->_locals);
5775 vec_pop(localblock->collect);
5778 /* do sanity checking, this function really needs refactoring */
5779 if (vec_last(parser->_locals) != (ast_expression*)var)
5780 parseerror(parser, "internal error: unexpected change in local variable handling");
5782 vec_pop(parser->_locals);
5783 if (vec_last(localblock->locals) != var)
5784 parseerror(parser, "internal error: unexpected change in local variable handling (2)");
5786 vec_pop(localblock->locals);
5787 /* push it to the to-be-generated globals */
5788 vec_push(parser->globals, (ast_expression*)var);
5790 for (i = 0; i < 3; ++i)
5791 vec_push(parser->globals, (ast_expression*)last_me[i]);
5792 folded_const = true;
5795 if (folded_const || !localblock || is_static) {
5796 if (cval != parser->nil &&
5797 (!cval || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5800 parseerror(parser, "initializer is non constant");
5805 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5806 qualifier != CV_VAR)
5808 var->cvq = CV_CONST;
5810 if (cval == parser->nil)
5811 var->expression.flags |= AST_FLAG_INITIALIZED;
5814 var->hasvalue = true;
5815 if (cval->expression.vtype == TYPE_STRING)
5816 var->constval.vstring = parser_strdup(cval->constval.vstring);
5817 else if (cval->expression.vtype == TYPE_FIELD)
5818 var->constval.vfield = cval;
5820 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5826 shunt sy = { NULL, NULL, NULL, NULL };
5829 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5830 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5831 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5832 if (!parser_sy_apply_operator(parser, &sy))
5835 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5836 parseerror(parser, "internal error: leaked operands");
5837 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5845 /* a constant initialized to an inexact value should be marked inexact:
5846 * const float x = <inexact>; should propagate the inexact flag
5848 if (var->cvq == CV_CONST && var->expression.vtype == TYPE_FLOAT) {
5849 if (cval && cval->hasvalue && cval->cvq == CV_CONST)
5850 var->inexact = cval->inexact;
5855 if (parser->tok == ',') {
5856 if (!parser_next(parser)) {
5857 parseerror(parser, "expected another variable");
5861 if (parser->tok != TOKEN_IDENT) {
5862 parseerror(parser, "expected another variable");
5865 var = ast_value_copy(basetype);
5867 ast_value_set_name(var, parser_tokval(parser));
5868 if (!parser_next(parser)) {
5869 parseerror(parser, "error parsing variable declaration");
5875 if (parser->tok != ';') {
5876 parseerror(parser, "missing semicolon after variables");
5880 if (!parser_next(parser)) {
5881 parseerror(parser, "parse error after variable declaration");
5885 ast_delete(basetype);
5889 if (cleanvar && var)
5891 ast_delete(basetype);
5895 ast_delete(basetype);
5896 if (cleanvar && var)
5898 if (me[0]) ast_member_delete(me[0]);
5899 if (me[1]) ast_member_delete(me[1]);
5900 if (me[2]) ast_member_delete(me[2]);
5904 static bool parser_global_statement(parser_t *parser)
5908 bool is_static = false;
5909 uint32_t qflags = 0;
5910 ast_value *istype = NULL;
5911 char *vstring = NULL;
5913 if (parser->tok == TOKEN_IDENT)
5914 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5916 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.' || parser->tok == TOKEN_DOTS)
5918 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5920 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5922 if (cvq == CV_WRONG)
5924 return parse_variable(parser, NULL, false, cvq, NULL, noref, is_static, qflags, vstring);
5926 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5928 return parse_enum(parser);
5930 else if (parser->tok == TOKEN_KEYWORD)
5932 if (!strcmp(parser_tokval(parser), "typedef")) {
5933 if (!parser_next(parser)) {
5934 parseerror(parser, "expected type definition after 'typedef'");
5937 return parse_typedef(parser);
5939 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5942 else if (parser->tok == '#')
5944 return parse_pragma(parser);
5946 else if (parser->tok == '$')
5948 if (!parser_next(parser)) {
5949 parseerror(parser, "parse error");
5955 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
5961 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5963 return util_crc16(old, str, strlen(str));
5966 static void progdefs_crc_file(const char *str)
5968 /* write to progdefs.h here */
5972 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5974 old = progdefs_crc_sum(old, str);
5975 progdefs_crc_file(str);
5979 static void generate_checksum(parser_t *parser, ir_builder *ir)
5981 uint16_t crc = 0xFFFF;
5985 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5986 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5988 progdefs_crc_file("\tint\tpad;\n");
5989 progdefs_crc_file("\tint\tofs_return[3];\n");
5990 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5991 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5992 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5993 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5994 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5995 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5996 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5997 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5999 for (i = 0; i < parser->crc_globals; ++i) {
6000 if (!ast_istype(parser->globals[i], ast_value))
6002 value = (ast_value*)(parser->globals[i]);
6003 switch (value->expression.vtype) {
6004 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6005 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6006 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6007 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6009 crc = progdefs_crc_both(crc, "\tint\t");
6012 crc = progdefs_crc_both(crc, value->name);
6013 crc = progdefs_crc_both(crc, ";\n");
6015 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
6016 for (i = 0; i < parser->crc_fields; ++i) {
6017 if (!ast_istype(parser->fields[i], ast_value))
6019 value = (ast_value*)(parser->fields[i]);
6020 switch (value->expression.next->vtype) {
6021 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6022 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6023 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6024 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6026 crc = progdefs_crc_both(crc, "\tint\t");
6029 crc = progdefs_crc_both(crc, value->name);
6030 crc = progdefs_crc_both(crc, ";\n");
6032 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
6033 ir->code->crc = crc;
6036 parser_t *parser_create()
6039 lex_ctx_t empty_ctx;
6042 parser = (parser_t*)mem_a(sizeof(parser_t));
6046 memset(parser, 0, sizeof(*parser));
6048 for (i = 0; i < operator_count; ++i) {
6049 if (operators[i].id == opid1('=')) {
6050 parser->assign_op = operators+i;
6054 if (!parser->assign_op) {
6055 con_err("internal error: initializing parser: failed to find assign operator\n");
6060 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
6061 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
6062 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
6063 vec_push(parser->_blocktypedefs, 0);
6065 parser->aliases = util_htnew(PARSER_HT_SIZE);
6067 empty_ctx.file = "<internal>";
6069 empty_ctx.column = 0;
6070 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
6071 parser->nil->cvq = CV_CONST;
6072 if (OPTS_FLAG(UNTYPED_NIL))
6073 util_htset(parser->htglobals, "nil", (void*)parser->nil);
6075 parser->max_param_count = 1;
6077 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
6078 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
6079 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
6081 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
6082 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
6083 parser->reserved_version->cvq = CV_CONST;
6084 parser->reserved_version->hasvalue = true;
6085 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
6086 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
6088 parser->reserved_version = NULL;
6091 parser->fold = fold_init (parser);
6092 parser->intrin = intrin_init(parser);
6096 static bool parser_compile(parser_t *parser)
6098 /* initial lexer/parser state */
6099 parser->lex->flags.noops = true;
6101 if (parser_next(parser))
6103 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
6105 if (!parser_global_statement(parser)) {
6106 if (parser->tok == TOKEN_EOF)
6107 parseerror(parser, "unexpected end of file");
6108 else if (compile_errors)
6109 parseerror(parser, "there have been errors, bailing out");
6110 lex_close(parser->lex);
6116 parseerror(parser, "parse error");
6117 lex_close(parser->lex);
6122 lex_close(parser->lex);
6125 return !compile_errors;
6128 bool parser_compile_file(parser_t *parser, const char *filename)
6130 parser->lex = lex_open(filename);
6132 con_err("failed to open file \"%s\"\n", filename);
6135 return parser_compile(parser);
6138 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
6140 parser->lex = lex_open_string(str, len, name);
6142 con_err("failed to create lexer for string \"%s\"\n", name);
6145 return parser_compile(parser);
6148 static void parser_remove_ast(parser_t *parser)
6151 if (parser->ast_cleaned)
6153 parser->ast_cleaned = true;
6154 for (i = 0; i < vec_size(parser->accessors); ++i) {
6155 ast_delete(parser->accessors[i]->constval.vfunc);
6156 parser->accessors[i]->constval.vfunc = NULL;
6157 ast_delete(parser->accessors[i]);
6159 for (i = 0; i < vec_size(parser->functions); ++i) {
6160 ast_delete(parser->functions[i]);
6162 for (i = 0; i < vec_size(parser->fields); ++i) {
6163 ast_delete(parser->fields[i]);
6165 for (i = 0; i < vec_size(parser->globals); ++i) {
6166 ast_delete(parser->globals[i]);
6168 vec_free(parser->accessors);
6169 vec_free(parser->functions);
6170 vec_free(parser->globals);
6171 vec_free(parser->fields);
6173 for (i = 0; i < vec_size(parser->variables); ++i)
6174 util_htdel(parser->variables[i]);
6175 vec_free(parser->variables);
6176 vec_free(parser->_blocklocals);
6177 vec_free(parser->_locals);
6179 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6180 ast_delete(parser->_typedefs[i]);
6181 vec_free(parser->_typedefs);
6182 for (i = 0; i < vec_size(parser->typedefs); ++i)
6183 util_htdel(parser->typedefs[i]);
6184 vec_free(parser->typedefs);
6185 vec_free(parser->_blocktypedefs);
6187 vec_free(parser->_block_ctx);
6189 vec_free(parser->labels);
6190 vec_free(parser->gotos);
6191 vec_free(parser->breaks);
6192 vec_free(parser->continues);
6194 ast_value_delete(parser->nil);
6196 ast_value_delete(parser->const_vec[0]);
6197 ast_value_delete(parser->const_vec[1]);
6198 ast_value_delete(parser->const_vec[2]);
6200 if (parser->reserved_version)
6201 ast_value_delete(parser->reserved_version);
6203 util_htdel(parser->aliases);
6204 fold_cleanup(parser->fold);
6205 intrin_cleanup(parser->intrin);
6208 void parser_cleanup(parser_t *parser)
6210 parser_remove_ast(parser);
6214 static bool parser_set_coverage_func(parser_t *parser, ir_builder *ir) {
6216 ast_expression *expr;
6220 if (!OPTS_OPTION_BOOL(OPTION_COVERAGE))
6224 for (i = 0; i != vec_size(parser->functions); ++i) {
6225 if (!strcmp(parser->functions[i]->name, "coverage")) {
6226 func = parser->functions[i];
6231 if (OPTS_OPTION_BOOL(OPTION_COVERAGE)) {
6232 con_out("coverage support requested but no coverage() builtin declared\n");
6233 ir_builder_delete(ir);
6240 expr = (ast_expression*)cov;
6242 if (expr->vtype != TYPE_FUNCTION || vec_size(expr->params) != 0) {
6244 ast_type_to_string(expr, ty, sizeof(ty));
6245 con_out("invalid type for coverage(): %s\n", ty);
6246 ir_builder_delete(ir);
6250 ir->coverage_func = func->ir_func->value;
6254 bool parser_finish(parser_t *parser, const char *output)
6260 if (compile_errors) {
6261 con_out("*** there were compile errors\n");
6265 ir = ir_builder_new("gmqcc_out");
6267 con_out("failed to allocate builder\n");
6271 for (i = 0; i < vec_size(parser->fields); ++i) {
6274 if (!ast_istype(parser->fields[i], ast_value))
6276 field = (ast_value*)parser->fields[i];
6277 hasvalue = field->hasvalue;
6278 field->hasvalue = false;
6279 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6280 con_out("failed to generate field %s\n", field->name);
6281 ir_builder_delete(ir);
6286 ast_expression *subtype;
6287 field->hasvalue = true;
6288 subtype = field->expression.next;
6289 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6290 if (subtype->vtype == TYPE_FIELD)
6291 ifld->fieldtype = subtype->next->vtype;
6292 else if (subtype->vtype == TYPE_FUNCTION)
6293 ifld->outtype = subtype->next->vtype;
6294 (void)!ir_value_set_field(field->ir_v, ifld);
6297 for (i = 0; i < vec_size(parser->globals); ++i) {
6299 if (!ast_istype(parser->globals[i], ast_value))
6301 asvalue = (ast_value*)(parser->globals[i]);
6302 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6303 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6304 "unused global: `%s`", asvalue->name);
6306 if (!ast_global_codegen(asvalue, ir, false)) {
6307 con_out("failed to generate global %s\n", asvalue->name);
6308 ir_builder_delete(ir);
6312 /* Build function vararg accessor ast tree now before generating
6313 * immediates, because the accessors may add new immediates
6315 for (i = 0; i < vec_size(parser->functions); ++i) {
6316 ast_function *f = parser->functions[i];
6318 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6319 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6320 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6321 con_out("failed to generate vararg setter for %s\n", f->name);
6322 ir_builder_delete(ir);
6325 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6326 con_out("failed to generate vararg getter for %s\n", f->name);
6327 ir_builder_delete(ir);
6331 ast_delete(f->varargs);
6336 /* Now we can generate immediates */
6337 if (!fold_generate(parser->fold, ir))
6340 /* before generating any functions we need to set the coverage_func */
6341 if (!parser_set_coverage_func(parser, ir))
6344 for (i = 0; i < vec_size(parser->globals); ++i) {
6346 if (!ast_istype(parser->globals[i], ast_value))
6348 asvalue = (ast_value*)(parser->globals[i]);
6349 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6351 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6352 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6353 "uninitialized constant: `%s`",
6355 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6356 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6357 "uninitialized global: `%s`",
6360 if (!ast_generate_accessors(asvalue, ir)) {
6361 ir_builder_delete(ir);
6365 for (i = 0; i < vec_size(parser->fields); ++i) {
6367 asvalue = (ast_value*)(parser->fields[i]->next);
6369 if (!ast_istype((ast_expression*)asvalue, ast_value))
6371 if (asvalue->expression.vtype != TYPE_ARRAY)
6373 if (!ast_generate_accessors(asvalue, ir)) {
6374 ir_builder_delete(ir);
6378 if (parser->reserved_version &&
6379 !ast_global_codegen(parser->reserved_version, ir, false))
6381 con_out("failed to generate reserved::version");
6382 ir_builder_delete(ir);
6385 for (i = 0; i < vec_size(parser->functions); ++i) {
6386 ast_function *f = parser->functions[i];
6387 if (!ast_function_codegen(f, ir)) {
6388 con_out("failed to generate function %s\n", f->name);
6389 ir_builder_delete(ir);
6394 generate_checksum(parser, ir);
6396 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6397 ir_builder_dump(ir, con_out);
6398 for (i = 0; i < vec_size(parser->functions); ++i) {
6399 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6400 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6401 ir_builder_delete(ir);
6405 parser_remove_ast(parser);
6407 if (compile_Werrors) {
6408 con_out("*** there were warnings treated as errors\n");
6409 compile_show_werrors();
6414 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6415 ir_builder_dump(ir, con_out);
6417 if (!ir_builder_generate(ir, output)) {
6418 con_out("*** failed to generate output file\n");
6419 ir_builder_delete(ir);
6423 ir_builder_delete(ir);