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 rotate_entfield_array_index_nodes(&out);
433 if (vec_size(sy->paren) && vec_last(sy->paren) == PAREN_FUNC) {
434 vec_push(sy->out, syexp(ctx, exprs[0]));
435 vec_push(sy->out, syexp(ctx, exprs[1]));
436 vec_last(sy->argc)++;
440 if (!ast_block_add_expr(blocks[0], exprs[1]))
443 blocks[0] = ast_block_new(ctx);
444 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
445 !ast_block_add_expr(blocks[0], exprs[1]))
450 ast_block_set_type(blocks[0], exprs[1]);
452 vec_push(sy->out, syblock(ctx, blocks[0]));
459 if ((out = fold_op(parser->fold, op, exprs)))
462 if (exprs[0]->vtype != TYPE_FLOAT &&
463 exprs[0]->vtype != TYPE_VECTOR) {
464 compile_error(ctx, "invalid types used in unary expression: cannot negate type %s",
465 type_name[exprs[0]->vtype]);
468 if (exprs[0]->vtype == TYPE_FLOAT)
469 out = (ast_expression*)ast_unary_new(ctx, VINSTR_NEG_F, exprs[0]);
471 out = (ast_expression*)ast_unary_new(ctx, VINSTR_NEG_V, exprs[0]);
475 if (!(out = fold_op(parser->fold, op, exprs))) {
476 switch (exprs[0]->vtype) {
478 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
481 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
484 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
485 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
487 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
489 /* we don't constant-fold NOT for these types */
491 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
494 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
497 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
498 type_name[exprs[0]->vtype]);
505 if (exprs[0]->vtype != exprs[1]->vtype ||
506 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
508 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
509 type_name[exprs[0]->vtype],
510 type_name[exprs[1]->vtype]);
513 if (!(out = fold_op(parser->fold, op, exprs))) {
514 switch (exprs[0]->vtype) {
516 out = fold_binary(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
519 out = fold_binary(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
522 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
523 type_name[exprs[0]->vtype],
524 type_name[exprs[1]->vtype]);
530 if (exprs[0]->vtype != exprs[1]->vtype ||
531 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT))
533 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
534 type_name[exprs[1]->vtype],
535 type_name[exprs[0]->vtype]);
538 if (!(out = fold_op(parser->fold, op, exprs))) {
539 switch (exprs[0]->vtype) {
541 out = fold_binary(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
544 out = fold_binary(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
547 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
548 type_name[exprs[1]->vtype],
549 type_name[exprs[0]->vtype]);
555 if (exprs[0]->vtype != exprs[1]->vtype &&
556 !(exprs[0]->vtype == TYPE_VECTOR &&
557 exprs[1]->vtype == TYPE_FLOAT) &&
558 !(exprs[1]->vtype == TYPE_VECTOR &&
559 exprs[0]->vtype == TYPE_FLOAT)
562 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
563 type_name[exprs[1]->vtype],
564 type_name[exprs[0]->vtype]);
567 if (!(out = fold_op(parser->fold, op, exprs))) {
568 switch (exprs[0]->vtype) {
570 if (exprs[1]->vtype == TYPE_VECTOR)
571 out = fold_binary(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
573 out = fold_binary(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
576 if (exprs[1]->vtype == TYPE_FLOAT)
577 out = fold_binary(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
579 out = fold_binary(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
582 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
583 type_name[exprs[1]->vtype],
584 type_name[exprs[0]->vtype]);
591 if (exprs[1]->vtype != TYPE_FLOAT) {
592 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
593 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
594 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
597 if (!(out = fold_op(parser->fold, op, exprs))) {
598 if (exprs[0]->vtype == TYPE_FLOAT)
599 out = fold_binary(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
601 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
602 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
603 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
610 if (NotSameType(TYPE_FLOAT)) {
611 compile_error(ctx, "invalid types used in expression: cannot perform modulo operation between types %s and %s",
612 type_name[exprs[0]->vtype],
613 type_name[exprs[1]->vtype]);
615 } else if (!(out = fold_op(parser->fold, op, exprs))) {
616 /* generate a call to __builtin_mod */
617 ast_expression *mod = intrin_func(parser->intrin, "mod");
618 ast_call *call = NULL;
619 if (!mod) return false; /* can return null for missing floor */
621 call = ast_call_new(parser_ctx(parser), mod);
622 vec_push(call->params, exprs[0]);
623 vec_push(call->params, exprs[1]);
625 out = (ast_expression*)call;
630 compile_error(ctx, "%= is unimplemented");
636 if ( !(exprs[0]->vtype == TYPE_FLOAT && exprs[1]->vtype == TYPE_FLOAT) &&
637 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_FLOAT) &&
638 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_VECTOR))
640 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
641 type_name[exprs[0]->vtype],
642 type_name[exprs[1]->vtype]);
646 if (!(out = fold_op(parser->fold, op, exprs))) {
648 * IF the first expression is float, the following will be too
649 * since scalar ^ vector is not allowed.
651 if (exprs[0]->vtype == TYPE_FLOAT) {
652 out = fold_binary(ctx,
653 (op->id == opid1('^') ? VINSTR_BITXOR : op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
657 * The first is a vector: vector is allowed to bitop with vector and
658 * with scalar, branch here for the second operand.
660 if (exprs[1]->vtype == TYPE_VECTOR) {
662 * Bitop all the values of the vector components against the
663 * vectors components in question.
665 out = fold_binary(ctx,
666 (op->id == opid1('^') ? VINSTR_BITXOR_V : op->id == opid1('|') ? VINSTR_BITOR_V : VINSTR_BITAND_V),
669 out = fold_binary(ctx,
670 (op->id == opid1('^') ? VINSTR_BITXOR_VF : op->id == opid1('|') ? VINSTR_BITOR_VF : VINSTR_BITAND_VF),
679 if (NotSameType(TYPE_FLOAT)) {
680 compile_error(ctx, "invalid types used in expression: cannot perform shift between types %s and %s",
681 type_name[exprs[0]->vtype],
682 type_name[exprs[1]->vtype]);
686 if (!(out = fold_op(parser->fold, op, exprs))) {
687 ast_expression *shift = intrin_func(parser->intrin, (op->id == opid2('<','<')) ? "__builtin_lshift" : "__builtin_rshift");
688 ast_call *call = ast_call_new(parser_ctx(parser), shift);
689 vec_push(call->params, exprs[0]);
690 vec_push(call->params, exprs[1]);
691 out = (ast_expression*)call;
695 case opid3('<','<','='):
696 case opid3('>','>','='):
697 if (NotSameType(TYPE_FLOAT)) {
698 compile_error(ctx, "invalid types used in expression: cannot perform shift operation between types %s and %s",
699 type_name[exprs[0]->vtype],
700 type_name[exprs[1]->vtype]);
704 if(!(out = fold_op(parser->fold, op, exprs))) {
705 ast_expression *shift = intrin_func(parser->intrin, (op->id == opid3('<','<','=')) ? "__builtin_lshift" : "__builtin_rshift");
706 ast_call *call = ast_call_new(parser_ctx(parser), shift);
707 vec_push(call->params, exprs[0]);
708 vec_push(call->params, exprs[1]);
709 out = (ast_expression*)ast_store_new(
713 (ast_expression*)call
720 generated_op += 1; /* INSTR_OR */
722 generated_op += INSTR_AND;
723 if (!(out = fold_op(parser->fold, op, exprs))) {
724 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
725 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
726 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
727 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
730 for (i = 0; i < 2; ++i) {
731 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->vtype == TYPE_VECTOR) {
732 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
734 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
736 exprs[i] = out; out = NULL;
737 if (OPTS_FLAG(PERL_LOGIC)) {
738 /* here we want to keep the right expressions' type */
742 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->vtype == TYPE_STRING) {
743 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, 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 */
754 out = fold_binary(ctx, generated_op, exprs[0], exprs[1]);
759 if (vec_last(sy->paren) != PAREN_TERNARY2) {
760 compile_error(ctx, "mismatched parenthesis/ternary");
764 if (!ast_compare_type(exprs[1], exprs[2])) {
765 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
766 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
767 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
770 if (!(out = fold_op(parser->fold, op, exprs)))
771 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
774 case opid2('*', '*'):
775 if (NotSameType(TYPE_FLOAT)) {
776 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
777 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
778 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
783 if (!(out = fold_op(parser->fold, op, exprs))) {
784 ast_call *gencall = ast_call_new(parser_ctx(parser), intrin_func(parser->intrin, "pow"));
785 vec_push(gencall->params, exprs[0]);
786 vec_push(gencall->params, exprs[1]);
787 out = (ast_expression*)gencall;
791 case opid2('>', '<'):
792 if (NotSameType(TYPE_VECTOR)) {
793 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
794 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
795 compile_error(ctx, "invalid types used in cross product: %s and %s",
800 if (!(out = fold_op(parser->fold, op, exprs))) {
811 case opid3('<','=','>'): /* -1, 0, or 1 */
812 if (NotSameType(TYPE_FLOAT)) {
813 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
814 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
815 compile_error(ctx, "invalid types used in comparision: %s and %s",
821 if (!(out = fold_op(parser->fold, op, exprs))) {
822 /* This whole block is NOT fold_binary safe */
823 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
825 eq->refs = AST_REF_NONE;
828 out = (ast_expression*)ast_ternary_new(ctx,
829 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
831 (ast_expression*)parser->fold->imm_float[2],
834 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
836 (ast_expression*)parser->fold->imm_float[0],
839 (ast_expression*)parser->fold->imm_float[1]
849 generated_op += 1; /* INSTR_GT */
851 generated_op += 1; /* INSTR_LT */
852 case opid2('>', '='):
853 generated_op += 1; /* INSTR_GE */
854 case opid2('<', '='):
855 generated_op += INSTR_LE;
856 if (NotSameType(TYPE_FLOAT)) {
857 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
858 type_name[exprs[0]->vtype],
859 type_name[exprs[1]->vtype]);
862 if (!(out = fold_op(parser->fold, op, exprs)))
863 out = fold_binary(ctx, generated_op, exprs[0], exprs[1]);
865 case opid2('!', '='):
866 if (exprs[0]->vtype != exprs[1]->vtype) {
867 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
868 type_name[exprs[0]->vtype],
869 type_name[exprs[1]->vtype]);
872 if (!(out = fold_op(parser->fold, op, exprs)))
873 out = fold_binary(ctx, type_ne_instr[exprs[0]->vtype], exprs[0], exprs[1]);
875 case opid2('=', '='):
876 if (exprs[0]->vtype != exprs[1]->vtype) {
877 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
878 type_name[exprs[0]->vtype],
879 type_name[exprs[1]->vtype]);
882 if (!(out = fold_op(parser->fold, op, exprs)))
883 out = fold_binary(ctx, type_eq_instr[exprs[0]->vtype], exprs[0], exprs[1]);
887 if (ast_istype(exprs[0], ast_entfield)) {
888 ast_expression *field = ((ast_entfield*)exprs[0])->field;
889 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
890 exprs[0]->vtype == TYPE_FIELD &&
891 exprs[0]->next->vtype == TYPE_VECTOR)
893 assignop = type_storep_instr[TYPE_VECTOR];
896 assignop = type_storep_instr[exprs[0]->vtype];
897 if (assignop == VINSTR_END || !ast_compare_type(field->next, exprs[1]))
899 ast_type_to_string(field->next, ty1, sizeof(ty1));
900 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
901 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
902 field->next->vtype == TYPE_FUNCTION &&
903 exprs[1]->vtype == TYPE_FUNCTION)
905 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
906 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
909 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
914 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
915 exprs[0]->vtype == TYPE_FIELD &&
916 exprs[0]->next->vtype == TYPE_VECTOR)
918 assignop = type_store_instr[TYPE_VECTOR];
921 assignop = type_store_instr[exprs[0]->vtype];
924 if (assignop == VINSTR_END) {
925 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
926 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
927 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
929 else if (!ast_compare_type(exprs[0], exprs[1]))
931 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
932 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
933 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
934 exprs[0]->vtype == TYPE_FUNCTION &&
935 exprs[1]->vtype == TYPE_FUNCTION)
937 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
938 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
941 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
944 (void)check_write_to(ctx, exprs[0]);
945 /* When we're a vector of part of an entity field we use STOREP */
946 if (ast_istype(exprs[0], ast_member) && ast_istype(((ast_member*)exprs[0])->owner, ast_entfield))
947 assignop = INSTR_STOREP_F;
948 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
950 case opid3('+','+','P'):
951 case opid3('-','-','P'):
953 if (exprs[0]->vtype != TYPE_FLOAT) {
954 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
955 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
958 if (op->id == opid3('+','+','P'))
962 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
963 if (ast_istype(exprs[0], ast_entfield)) {
964 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
966 (ast_expression*)parser->fold->imm_float[1]);
968 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
970 (ast_expression*)parser->fold->imm_float[1]);
973 case opid3('S','+','+'):
974 case opid3('S','-','-'):
976 if (exprs[0]->vtype != TYPE_FLOAT) {
977 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
978 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
981 if (op->id == opid3('S','+','+')) {
988 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
989 if (ast_istype(exprs[0], ast_entfield)) {
990 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
992 (ast_expression*)parser->fold->imm_float[1]);
994 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
996 (ast_expression*)parser->fold->imm_float[1]);
1000 out = fold_binary(ctx, subop,
1002 (ast_expression*)parser->fold->imm_float[1]);
1005 case opid2('+','='):
1006 case opid2('-','='):
1007 if (exprs[0]->vtype != exprs[1]->vtype ||
1008 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
1010 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1011 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1012 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1016 (void)check_write_to(ctx, exprs[0]);
1017 if (ast_istype(exprs[0], ast_entfield))
1018 assignop = type_storep_instr[exprs[0]->vtype];
1020 assignop = type_store_instr[exprs[0]->vtype];
1021 switch (exprs[0]->vtype) {
1023 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1024 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1025 exprs[0], exprs[1]);
1028 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1029 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1030 exprs[0], exprs[1]);
1033 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1034 type_name[exprs[0]->vtype],
1035 type_name[exprs[1]->vtype]);
1039 case opid2('*','='):
1040 case opid2('/','='):
1041 if (exprs[1]->vtype != TYPE_FLOAT ||
1042 !(exprs[0]->vtype == TYPE_FLOAT ||
1043 exprs[0]->vtype == TYPE_VECTOR))
1045 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1046 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1047 compile_error(ctx, "invalid types used in expression: %s and %s",
1051 (void)check_write_to(ctx, exprs[0]);
1052 if (ast_istype(exprs[0], ast_entfield))
1053 assignop = type_storep_instr[exprs[0]->vtype];
1055 assignop = type_store_instr[exprs[0]->vtype];
1056 switch (exprs[0]->vtype) {
1058 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1059 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1060 exprs[0], exprs[1]);
1063 if (op->id == opid2('*','=')) {
1064 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1065 exprs[0], exprs[1]);
1067 out = fold_binary(ctx, INSTR_DIV_F,
1068 (ast_expression*)parser->fold->imm_float[1],
1071 compile_error(ctx, "internal error: failed to generate division");
1074 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1079 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1080 type_name[exprs[0]->vtype],
1081 type_name[exprs[1]->vtype]);
1085 case opid2('&','='):
1086 case opid2('|','='):
1087 case opid2('^','='):
1088 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1089 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1090 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1091 compile_error(ctx, "invalid types used in expression: %s and %s",
1095 (void)check_write_to(ctx, exprs[0]);
1096 if (ast_istype(exprs[0], ast_entfield))
1097 assignop = type_storep_instr[exprs[0]->vtype];
1099 assignop = type_store_instr[exprs[0]->vtype];
1100 if (exprs[0]->vtype == TYPE_FLOAT)
1101 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1102 (op->id == opid2('^','=') ? VINSTR_BITXOR : op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1103 exprs[0], exprs[1]);
1105 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1106 (op->id == opid2('^','=') ? VINSTR_BITXOR_V : op->id == opid2('&','=') ? VINSTR_BITAND_V : VINSTR_BITOR_V),
1107 exprs[0], exprs[1]);
1109 case opid3('&','~','='):
1110 /* This is like: a &= ~(b);
1111 * But QC has no bitwise-not, so we implement it as
1114 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1115 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1116 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1117 compile_error(ctx, "invalid types used in expression: %s and %s",
1121 if (ast_istype(exprs[0], ast_entfield))
1122 assignop = type_storep_instr[exprs[0]->vtype];
1124 assignop = type_store_instr[exprs[0]->vtype];
1125 if (exprs[0]->vtype == TYPE_FLOAT)
1126 out = fold_binary(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1128 out = fold_binary(ctx, VINSTR_BITAND_V, exprs[0], exprs[1]);
1131 (void)check_write_to(ctx, exprs[0]);
1132 if (exprs[0]->vtype == TYPE_FLOAT)
1133 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1135 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_V, exprs[0], out);
1136 asbinstore->keep_dest = true;
1137 out = (ast_expression*)asbinstore;
1140 case opid3('l', 'e', 'n'):
1141 if (exprs[0]->vtype != TYPE_STRING && exprs[0]->vtype != TYPE_ARRAY) {
1142 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1143 compile_error(ast_ctx(exprs[0]), "invalid type for length operator: %s", ty1);
1146 /* strings must be const, arrays are statically sized */
1147 if (exprs[0]->vtype == TYPE_STRING &&
1148 !(((ast_value*)exprs[0])->hasvalue && ((ast_value*)exprs[0])->cvq == CV_CONST))
1150 compile_error(ast_ctx(exprs[0]), "operand of length operator not a valid constant expression");
1153 out = fold_op(parser->fold, op, exprs);
1156 case opid2('~', 'P'):
1157 if (exprs[0]->vtype != TYPE_FLOAT && exprs[0]->vtype != TYPE_VECTOR) {
1158 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1159 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1162 if (!(out = fold_op(parser->fold, op, exprs))) {
1163 if (exprs[0]->vtype == TYPE_FLOAT) {
1164 out = fold_binary(ctx, INSTR_SUB_F, (ast_expression*)parser->fold->imm_float[2], exprs[0]);
1166 out = fold_binary(ctx, INSTR_SUB_V, (ast_expression*)parser->fold->imm_vector[1], exprs[0]);
1173 compile_error(ctx, "failed to apply operator %s", op->op);
1177 vec_push(sy->out, syexp(ctx, out));
1181 static bool parser_close_call(parser_t *parser, shunt *sy)
1183 /* was a function call */
1184 ast_expression *fun;
1185 ast_value *funval = NULL;
1189 size_t paramcount, i;
1192 fid = vec_last(sy->ops).off;
1193 vec_shrinkby(sy->ops, 1);
1195 /* out[fid] is the function
1196 * everything above is parameters...
1198 if (!vec_size(sy->argc)) {
1199 parseerror(parser, "internal error: no argument counter available");
1203 paramcount = vec_last(sy->argc);
1206 if (vec_size(sy->out) < fid) {
1207 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1208 (unsigned long)vec_size(sy->out),
1210 (unsigned long)paramcount);
1215 * TODO handle this at the intrinsic level with an ast_intrinsic
1218 if ((fun = sy->out[fid].out) == intrin_debug_typestring(parser->intrin)) {
1220 if (fid+2 != vec_size(sy->out) ||
1221 vec_last(sy->out).block)
1223 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1226 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1227 ast_unref(vec_last(sy->out).out);
1228 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1229 (ast_expression*)fold_constgen_string(parser->fold, ty, false));
1230 vec_shrinkby(sy->out, 1);
1235 * Now we need to determine if the function that is being called is
1236 * an intrinsic so we can evaluate if the arguments to it are constant
1237 * and than fruitfully fold them.
1239 #define fold_can_1(X) \
1240 (ast_istype(((ast_expression*)(X)), ast_value) && (X)->hasvalue && ((X)->cvq == CV_CONST) && \
1241 ((ast_expression*)(X))->vtype != TYPE_FUNCTION)
1243 if (fid + 1 < vec_size(sy->out))
1246 for (i = 0; i < paramcount; ++i) {
1247 if (!fold_can_1((ast_value*)sy->out[fid + 1 + i].out)) {
1254 * All is well which ends well, if we make it into here we can ignore the
1255 * intrinsic call and just evaluate it i.e constant fold it.
1257 if (fold && ast_istype(fun, ast_value) && ((ast_value*)fun)->intrinsic) {
1258 ast_expression **exprs = NULL;
1259 ast_expression *foldval = NULL;
1261 for (i = 0; i < paramcount; i++)
1262 vec_push(exprs, sy->out[fid+1 + i].out);
1264 if (!(foldval = intrin_fold(parser->intrin, (ast_value*)fun, exprs))) {
1270 * Blub: what sorts of unreffing and resizing of
1271 * sy->out should I be doing here?
1273 sy->out[fid] = syexp(foldval->node.context, foldval);
1274 vec_shrinkby(sy->out, paramcount);
1281 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1286 if (fid+1 + paramcount != vec_size(sy->out)) {
1287 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1288 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1292 for (i = 0; i < paramcount; ++i)
1293 vec_push(call->params, sy->out[fid+1 + i].out);
1294 vec_shrinkby(sy->out, paramcount);
1295 (void)!ast_call_check_types(call, parser->function->vtype->expression.varparam);
1296 if (parser->max_param_count < paramcount)
1297 parser->max_param_count = paramcount;
1299 if (ast_istype(fun, ast_value)) {
1300 funval = (ast_value*)fun;
1301 if ((fun->flags & AST_FLAG_VARIADIC) &&
1302 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1304 call->va_count = (ast_expression*)fold_constgen_float(parser->fold, (qcfloat_t)paramcount, false);
1308 /* overwrite fid, the function, with a call */
1309 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1311 if (fun->vtype != TYPE_FUNCTION) {
1312 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1317 parseerror(parser, "could not determine function return type");
1320 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1322 if (fun->flags & AST_FLAG_DEPRECATED) {
1324 return !parsewarning(parser, WARN_DEPRECATED,
1325 "call to function (which is marked deprecated)\n",
1326 "-> it has been declared here: %s:%i",
1327 ast_ctx(fun).file, ast_ctx(fun).line);
1330 return !parsewarning(parser, WARN_DEPRECATED,
1331 "call to `%s` (which is marked deprecated)\n"
1332 "-> `%s` declared here: %s:%i",
1333 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1335 return !parsewarning(parser, WARN_DEPRECATED,
1336 "call to `%s` (deprecated: %s)\n"
1337 "-> `%s` declared here: %s:%i",
1338 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1342 if (vec_size(fun->params) != paramcount &&
1343 !((fun->flags & AST_FLAG_VARIADIC) &&
1344 vec_size(fun->params) < paramcount))
1346 const char *fewmany = (vec_size(fun->params) > paramcount) ? "few" : "many";
1348 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1349 "too %s parameters for call to %s: expected %i, got %i\n"
1350 " -> `%s` has been declared here: %s:%i",
1351 fewmany, fval->name, (int)vec_size(fun->params), (int)paramcount,
1352 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1354 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1355 "too %s parameters for function call: expected %i, got %i\n"
1356 " -> it has been declared here: %s:%i",
1357 fewmany, (int)vec_size(fun->params), (int)paramcount,
1358 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1365 static bool parser_close_paren(parser_t *parser, shunt *sy)
1367 if (!vec_size(sy->ops)) {
1368 parseerror(parser, "unmatched closing paren");
1372 while (vec_size(sy->ops)) {
1373 if (vec_last(sy->ops).isparen) {
1374 if (vec_last(sy->paren) == PAREN_FUNC) {
1376 if (!parser_close_call(parser, sy))
1380 if (vec_last(sy->paren) == PAREN_EXPR) {
1382 if (!vec_size(sy->out)) {
1383 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1384 vec_shrinkby(sy->ops, 1);
1387 vec_shrinkby(sy->ops, 1);
1390 if (vec_last(sy->paren) == PAREN_INDEX) {
1392 /* pop off the parenthesis */
1393 vec_shrinkby(sy->ops, 1);
1394 /* then apply the index operator */
1395 if (!parser_sy_apply_operator(parser, sy))
1399 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1400 vec_last(sy->paren) = PAREN_TERNARY2;
1401 /* pop off the parenthesis */
1402 vec_shrinkby(sy->ops, 1);
1405 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1408 if (!parser_sy_apply_operator(parser, sy))
1414 static void parser_reclassify_token(parser_t *parser)
1417 if (parser->tok >= TOKEN_START)
1419 for (i = 0; i < operator_count; ++i) {
1420 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1421 parser->tok = TOKEN_OPERATOR;
1427 static ast_expression* parse_vararg_do(parser_t *parser)
1429 ast_expression *idx, *out;
1431 ast_value *funtype = parser->function->vtype;
1432 lex_ctx_t ctx = parser_ctx(parser);
1434 if (!parser->function->varargs) {
1435 parseerror(parser, "function has no variable argument list");
1439 if (!parser_next(parser) || parser->tok != '(') {
1440 parseerror(parser, "expected parameter index and type in parenthesis");
1443 if (!parser_next(parser)) {
1444 parseerror(parser, "error parsing parameter index");
1448 idx = parse_expression_leave(parser, true, false, false);
1452 if (parser->tok != ',') {
1453 if (parser->tok != ')') {
1455 parseerror(parser, "expected comma after parameter index");
1458 /* vararg piping: ...(start) */
1459 out = (ast_expression*)ast_argpipe_new(ctx, idx);
1463 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1465 parseerror(parser, "expected typename for vararg");
1469 typevar = parse_typename(parser, NULL, NULL, NULL);
1475 if (parser->tok != ')') {
1477 ast_delete(typevar);
1478 parseerror(parser, "expected closing paren");
1482 if (funtype->expression.varparam &&
1483 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1487 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1488 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1489 compile_error(ast_ctx(typevar),
1490 "function was declared to take varargs of type `%s`, requested type is: %s",
1494 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1495 ast_type_adopt(out, typevar);
1496 ast_delete(typevar);
1500 static ast_expression* parse_vararg(parser_t *parser)
1502 bool old_noops = parser->lex->flags.noops;
1504 ast_expression *out;
1506 parser->lex->flags.noops = true;
1507 out = parse_vararg_do(parser);
1509 parser->lex->flags.noops = old_noops;
1513 /* not to be exposed */
1514 bool ftepp_predef_exists(const char *name);
1515 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1517 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1518 parser->tok == TOKEN_IDENT &&
1519 !strcmp(parser_tokval(parser), "_"))
1521 /* a translatable string */
1524 parser->lex->flags.noops = true;
1525 if (!parser_next(parser) || parser->tok != '(') {
1526 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1529 parser->lex->flags.noops = false;
1530 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1531 parseerror(parser, "expected a constant string in translatable-string extension");
1534 val = (ast_value*)fold_constgen_string(parser->fold, parser_tokval(parser), true);
1537 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1539 if (!parser_next(parser) || parser->tok != ')') {
1540 parseerror(parser, "expected closing paren after translatable string");
1545 else if (parser->tok == TOKEN_DOTS)
1548 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1549 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1552 va = parse_vararg(parser);
1555 vec_push(sy->out, syexp(parser_ctx(parser), va));
1558 else if (parser->tok == TOKEN_FLOATCONST) {
1559 ast_expression *val = fold_constgen_float(parser->fold, (parser_token(parser)->constval.f), false);
1562 vec_push(sy->out, syexp(parser_ctx(parser), val));
1565 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1566 ast_expression *val = fold_constgen_float(parser->fold, (qcfloat_t)(parser_token(parser)->constval.i), false);
1569 vec_push(sy->out, syexp(parser_ctx(parser), val));
1572 else if (parser->tok == TOKEN_STRINGCONST) {
1573 ast_expression *val = fold_constgen_string(parser->fold, parser_tokval(parser), false);
1576 vec_push(sy->out, syexp(parser_ctx(parser), val));
1579 else if (parser->tok == TOKEN_VECTORCONST) {
1580 ast_expression *val = fold_constgen_vector(parser->fold, parser_token(parser)->constval.v);
1583 vec_push(sy->out, syexp(parser_ctx(parser), val));
1586 else if (parser->tok == TOKEN_IDENT)
1588 const char *ctoken = parser_tokval(parser);
1589 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1590 ast_expression *var;
1591 /* a_vector.{x,y,z} */
1592 if (!vec_size(sy->ops) ||
1593 !vec_last(sy->ops).etype ||
1594 operators[vec_last(sy->ops).etype-1].id != opid1('.'))
1596 /* When adding more intrinsics, fix the above condition */
1599 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1601 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1603 var = parser_find_var(parser, parser_tokval(parser));
1605 var = parser_find_field(parser, parser_tokval(parser));
1607 if (!var && with_labels) {
1608 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1610 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1611 var = (ast_expression*)lbl;
1612 vec_push(parser->labels, lbl);
1615 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
1616 var = (ast_expression*)fold_constgen_string(parser->fold, parser->function->name, false);
1619 * now we try for the real intrinsic hashtable. If the string
1620 * begins with __builtin, we simply skip past it, otherwise we
1621 * use the identifier as is.
1623 if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
1624 var = intrin_func(parser->intrin, parser_tokval(parser));
1628 * Try it again, intrin_func deals with the alias method as well
1629 * the first one masks for __builtin though, we emit warning here.
1632 if ((var = intrin_func(parser->intrin, parser_tokval(parser)))) {
1633 (void)!compile_warning(
1636 "using implicitly defined builtin `__builtin_%s' for `%s'",
1637 parser_tokval(parser),
1638 parser_tokval(parser)
1646 * sometimes people use preprocessing predefs without enabling them
1647 * i've done this thousands of times already myself. Lets check for
1648 * it in the predef table. And diagnose it better :)
1650 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
1651 parseerror(parser, "unexpected identifier: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1655 parseerror(parser, "unexpected identifier: %s", parser_tokval(parser));
1661 if (ast_istype(var, ast_value)) {
1662 ((ast_value*)var)->uses++;
1664 else if (ast_istype(var, ast_member)) {
1665 ast_member *mem = (ast_member*)var;
1666 if (ast_istype(mem->owner, ast_value))
1667 ((ast_value*)(mem->owner))->uses++;
1670 vec_push(sy->out, syexp(parser_ctx(parser), var));
1673 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1677 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1679 ast_expression *expr = NULL;
1682 bool wantop = false;
1683 /* only warn once about an assignment in a truth value because the current code
1684 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1686 bool warn_parenthesis = true;
1688 /* count the parens because an if starts with one, so the
1689 * end of a condition is an unmatched closing paren
1693 memset(&sy, 0, sizeof(sy));
1695 parser->lex->flags.noops = false;
1697 parser_reclassify_token(parser);
1701 if (parser->tok == TOKEN_TYPENAME) {
1702 parseerror(parser, "unexpected typename `%s`", parser_tokval(parser));
1706 if (parser->tok == TOKEN_OPERATOR)
1708 /* classify the operator */
1709 const oper_info *op;
1710 const oper_info *olast = NULL;
1712 for (o = 0; o < operator_count; ++o) {
1713 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1714 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1715 !strcmp(parser_tokval(parser), operators[o].op))
1720 if (o == operator_count) {
1721 compile_error(parser_ctx(parser), "unexpected operator: %s", parser_tokval(parser));
1724 /* found an operator */
1727 /* when declaring variables, a comma starts a new variable */
1728 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
1729 /* fixup the token */
1734 /* a colon without a pervious question mark cannot be a ternary */
1735 if (!ternaries && op->id == opid2(':','?')) {
1740 if (op->id == opid1(',')) {
1741 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1742 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1746 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1747 olast = &operators[vec_last(sy.ops).etype-1];
1749 /* first only apply higher precedences, assoc_left+equal comes after we warn about precedence rules */
1750 while (olast && op->prec < olast->prec)
1752 if (!parser_sy_apply_operator(parser, &sy))
1754 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1755 olast = &operators[vec_last(sy.ops).etype-1];
1760 #define IsAssignOp(x) (\
1761 (x) == opid1('=') || \
1762 (x) == opid2('+','=') || \
1763 (x) == opid2('-','=') || \
1764 (x) == opid2('*','=') || \
1765 (x) == opid2('/','=') || \
1766 (x) == opid2('%','=') || \
1767 (x) == opid2('&','=') || \
1768 (x) == opid2('|','=') || \
1769 (x) == opid3('&','~','=') \
1771 if (warn_parenthesis) {
1772 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1773 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1774 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
1777 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1778 warn_parenthesis = false;
1781 if (olast && olast->id != op->id) {
1782 if ((op->id == opid1('&') || op->id == opid1('|') || op->id == opid1('^')) &&
1783 (olast->id == opid1('&') || olast->id == opid1('|') || olast->id == opid1('^')))
1785 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around bitwise operations");
1786 warn_parenthesis = false;
1788 else if ((op->id == opid2('&','&') || op->id == opid2('|','|')) &&
1789 (olast->id == opid2('&','&') || olast->id == opid2('|','|')))
1791 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around logical operations");
1792 warn_parenthesis = false;
1798 (op->prec < olast->prec) ||
1799 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1801 if (!parser_sy_apply_operator(parser, &sy))
1803 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1804 olast = &operators[vec_last(sy.ops).etype-1];
1809 if (op->id == opid1('(')) {
1811 size_t sycount = vec_size(sy.out);
1812 /* we expected an operator, this is the function-call operator */
1813 vec_push(sy.paren, PAREN_FUNC);
1814 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
1815 vec_push(sy.argc, 0);
1817 vec_push(sy.paren, PAREN_EXPR);
1818 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1821 } else if (op->id == opid1('[')) {
1823 parseerror(parser, "unexpected array subscript");
1826 vec_push(sy.paren, PAREN_INDEX);
1827 /* push both the operator and the paren, this makes life easier */
1828 vec_push(sy.ops, syop(parser_ctx(parser), op));
1829 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1831 } else if (op->id == opid2('?',':')) {
1832 vec_push(sy.ops, syop(parser_ctx(parser), op));
1833 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1836 vec_push(sy.paren, PAREN_TERNARY1);
1837 } else if (op->id == opid2(':','?')) {
1838 if (!vec_size(sy.paren)) {
1839 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1842 if (vec_last(sy.paren) != PAREN_TERNARY1) {
1843 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1846 if (!parser_close_paren(parser, &sy))
1848 vec_push(sy.ops, syop(parser_ctx(parser), op));
1852 vec_push(sy.ops, syop(parser_ctx(parser), op));
1853 wantop = !!(op->flags & OP_SUFFIX);
1856 else if (parser->tok == ')') {
1857 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1858 if (!parser_sy_apply_operator(parser, &sy))
1861 if (!vec_size(sy.paren))
1864 if (vec_last(sy.paren) == PAREN_TERNARY1) {
1865 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
1868 if (!parser_close_paren(parser, &sy))
1871 /* must be a function call without parameters */
1872 if (vec_last(sy.paren) != PAREN_FUNC) {
1873 parseerror(parser, "closing paren in invalid position");
1876 if (!parser_close_paren(parser, &sy))
1881 else if (parser->tok == '(') {
1882 parseerror(parser, "internal error: '(' should be classified as operator");
1885 else if (parser->tok == '[') {
1886 parseerror(parser, "internal error: '[' should be classified as operator");
1889 else if (parser->tok == ']') {
1890 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1891 if (!parser_sy_apply_operator(parser, &sy))
1894 if (!vec_size(sy.paren))
1896 if (vec_last(sy.paren) != PAREN_INDEX) {
1897 parseerror(parser, "mismatched parentheses, unexpected ']'");
1900 if (!parser_close_paren(parser, &sy))
1905 if (!parse_sya_operand(parser, &sy, with_labels))
1910 /* in this case we might want to allow constant string concatenation */
1911 bool concatenated = false;
1912 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
1913 ast_expression *lexpr = vec_last(sy.out).out;
1914 if (ast_istype(lexpr, ast_value)) {
1915 ast_value *last = (ast_value*)lexpr;
1916 if (last->isimm == true && last->cvq == CV_CONST &&
1917 last->hasvalue && last->expression.vtype == TYPE_STRING)
1919 char *newstr = NULL;
1920 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
1921 vec_last(sy.out).out = (ast_expression*)fold_constgen_string(parser->fold, newstr, false);
1923 concatenated = true;
1927 if (!concatenated) {
1928 parseerror(parser, "expected operator or end of statement");
1933 if (!parser_next(parser)) {
1936 if (parser->tok == ';' ||
1937 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
1938 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
1944 while (vec_size(sy.ops)) {
1945 if (!parser_sy_apply_operator(parser, &sy))
1949 parser->lex->flags.noops = true;
1950 if (vec_size(sy.out) != 1) {
1951 parseerror(parser, "expression expected");
1954 expr = sy.out[0].out;
1957 if (vec_size(sy.paren)) {
1958 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
1966 parser->lex->flags.noops = true;
1967 for (i = 0; i < vec_size(sy.out); ++i) {
1969 ast_unref(sy.out[i].out);
1978 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
1980 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
1983 if (parser->tok != ';') {
1984 parseerror(parser, "semicolon expected after expression");
1988 if (!parser_next(parser)) {
1995 static void parser_enterblock(parser_t *parser)
1997 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1998 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1999 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2000 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2001 vec_push(parser->_block_ctx, parser_ctx(parser));
2004 static bool parser_leaveblock(parser_t *parser)
2007 size_t locals, typedefs;
2009 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2010 parseerror(parser, "internal error: parser_leaveblock with no block");
2014 util_htdel(vec_last(parser->variables));
2016 vec_pop(parser->variables);
2017 if (!vec_size(parser->_blocklocals)) {
2018 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2022 locals = vec_last(parser->_blocklocals);
2023 vec_pop(parser->_blocklocals);
2024 while (vec_size(parser->_locals) != locals) {
2025 ast_expression *e = vec_last(parser->_locals);
2026 ast_value *v = (ast_value*)e;
2027 vec_pop(parser->_locals);
2028 if (ast_istype(e, ast_value) && !v->uses) {
2029 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2034 typedefs = vec_last(parser->_blocktypedefs);
2035 while (vec_size(parser->_typedefs) != typedefs) {
2036 ast_delete(vec_last(parser->_typedefs));
2037 vec_pop(parser->_typedefs);
2039 util_htdel(vec_last(parser->typedefs));
2040 vec_pop(parser->typedefs);
2042 vec_pop(parser->_block_ctx);
2047 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2049 vec_push(parser->_locals, e);
2050 util_htset(vec_last(parser->variables), name, (void*)e);
2053 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2055 vec_push(parser->globals, e);
2056 util_htset(parser->htglobals, name, e);
2059 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2063 ast_expression *prev;
2065 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2067 ast_type_to_string(cond, ty, sizeof(ty));
2068 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2071 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2074 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2077 parseerror(parser, "internal error: failed to process condition");
2082 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2084 /* vector types need to be cast to true booleans */
2085 ast_binary *bin = (ast_binary*)cond;
2086 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2088 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2090 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2093 parseerror(parser, "internal error: failed to process condition");
2100 unary = (ast_unary*)cond;
2101 /* ast_istype dereferences cond, should test here for safety */
2102 while (cond && ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2104 cond = unary->operand;
2105 unary->operand = NULL;
2108 unary = (ast_unary*)cond;
2112 parseerror(parser, "internal error: failed to process condition");
2114 if (ifnot) *_ifnot = !*_ifnot;
2118 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2121 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2124 lex_ctx_t ctx = parser_ctx(parser);
2126 (void)block; /* not touching */
2128 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2129 if (!parser_next(parser)) {
2130 parseerror(parser, "expected condition or 'not'");
2133 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2135 if (!parser_next(parser)) {
2136 parseerror(parser, "expected condition in parenthesis");
2140 if (parser->tok != '(') {
2141 parseerror(parser, "expected 'if' condition in parenthesis");
2144 /* parse into the expression */
2145 if (!parser_next(parser)) {
2146 parseerror(parser, "expected 'if' condition after opening paren");
2149 /* parse the condition */
2150 cond = parse_expression_leave(parser, false, true, false);
2154 if (parser->tok != ')') {
2155 parseerror(parser, "expected closing paren after 'if' condition");
2159 /* parse into the 'then' branch */
2160 if (!parser_next(parser)) {
2161 parseerror(parser, "expected statement for on-true branch of 'if'");
2165 if (!parse_statement_or_block(parser, &ontrue)) {
2170 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2171 /* check for an else */
2172 if (!strcmp(parser_tokval(parser), "else")) {
2173 /* parse into the 'else' branch */
2174 if (!parser_next(parser)) {
2175 parseerror(parser, "expected on-false branch after 'else'");
2180 if (!parse_statement_or_block(parser, &onfalse)) {
2187 cond = process_condition(parser, cond, &ifnot);
2189 if (ontrue) ast_delete(ontrue);
2190 if (onfalse) ast_delete(onfalse);
2195 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2197 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2198 *out = (ast_expression*)ifthen;
2202 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2203 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2208 /* skip the 'while' and get the body */
2209 if (!parser_next(parser)) {
2210 if (OPTS_FLAG(LOOP_LABELS))
2211 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2213 parseerror(parser, "expected 'while' condition in parenthesis");
2217 if (parser->tok == ':') {
2218 if (!OPTS_FLAG(LOOP_LABELS))
2219 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2220 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2221 parseerror(parser, "expected loop label");
2224 label = util_strdup(parser_tokval(parser));
2225 if (!parser_next(parser)) {
2227 parseerror(parser, "expected 'while' condition in parenthesis");
2232 if (parser->tok != '(') {
2233 parseerror(parser, "expected 'while' condition in parenthesis");
2237 vec_push(parser->breaks, label);
2238 vec_push(parser->continues, label);
2240 rv = parse_while_go(parser, block, out);
2243 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2244 parseerror(parser, "internal error: label stack corrupted");
2250 vec_pop(parser->breaks);
2251 vec_pop(parser->continues);
2256 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2259 ast_expression *cond, *ontrue;
2263 lex_ctx_t ctx = parser_ctx(parser);
2265 (void)block; /* not touching */
2267 /* parse into the expression */
2268 if (!parser_next(parser)) {
2269 parseerror(parser, "expected 'while' condition after opening paren");
2272 /* parse the condition */
2273 cond = parse_expression_leave(parser, false, true, false);
2277 if (parser->tok != ')') {
2278 parseerror(parser, "expected closing paren after 'while' condition");
2282 /* parse into the 'then' branch */
2283 if (!parser_next(parser)) {
2284 parseerror(parser, "expected while-loop body");
2288 if (!parse_statement_or_block(parser, &ontrue)) {
2293 cond = process_condition(parser, cond, &ifnot);
2298 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2299 *out = (ast_expression*)aloop;
2303 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2304 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2309 /* skip the 'do' and get the body */
2310 if (!parser_next(parser)) {
2311 if (OPTS_FLAG(LOOP_LABELS))
2312 parseerror(parser, "expected loop label or body");
2314 parseerror(parser, "expected loop body");
2318 if (parser->tok == ':') {
2319 if (!OPTS_FLAG(LOOP_LABELS))
2320 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2321 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2322 parseerror(parser, "expected loop label");
2325 label = util_strdup(parser_tokval(parser));
2326 if (!parser_next(parser)) {
2328 parseerror(parser, "expected loop body");
2333 vec_push(parser->breaks, label);
2334 vec_push(parser->continues, label);
2336 rv = parse_dowhile_go(parser, block, out);
2339 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2340 parseerror(parser, "internal error: label stack corrupted");
2343 * Test for NULL otherwise ast_delete dereferences null pointer
2351 vec_pop(parser->breaks);
2352 vec_pop(parser->continues);
2357 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2360 ast_expression *cond, *ontrue;
2364 lex_ctx_t ctx = parser_ctx(parser);
2366 (void)block; /* not touching */
2368 if (!parse_statement_or_block(parser, &ontrue))
2371 /* expect the "while" */
2372 if (parser->tok != TOKEN_KEYWORD ||
2373 strcmp(parser_tokval(parser), "while"))
2375 parseerror(parser, "expected 'while' and condition");
2380 /* skip the 'while' and check for opening paren */
2381 if (!parser_next(parser) || parser->tok != '(') {
2382 parseerror(parser, "expected 'while' condition in parenthesis");
2386 /* parse into the expression */
2387 if (!parser_next(parser)) {
2388 parseerror(parser, "expected 'while' condition after opening paren");
2392 /* parse the condition */
2393 cond = parse_expression_leave(parser, false, true, false);
2397 if (parser->tok != ')') {
2398 parseerror(parser, "expected closing paren after 'while' condition");
2404 if (!parser_next(parser) || parser->tok != ';') {
2405 parseerror(parser, "expected semicolon after condition");
2411 if (!parser_next(parser)) {
2412 parseerror(parser, "parse error");
2418 cond = process_condition(parser, cond, &ifnot);
2423 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2424 *out = (ast_expression*)aloop;
2428 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2429 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2434 /* skip the 'for' and check for opening paren */
2435 if (!parser_next(parser)) {
2436 if (OPTS_FLAG(LOOP_LABELS))
2437 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2439 parseerror(parser, "expected 'for' expressions in parenthesis");
2443 if (parser->tok == ':') {
2444 if (!OPTS_FLAG(LOOP_LABELS))
2445 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2446 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2447 parseerror(parser, "expected loop label");
2450 label = util_strdup(parser_tokval(parser));
2451 if (!parser_next(parser)) {
2453 parseerror(parser, "expected 'for' expressions in parenthesis");
2458 if (parser->tok != '(') {
2459 parseerror(parser, "expected 'for' expressions in parenthesis");
2463 vec_push(parser->breaks, label);
2464 vec_push(parser->continues, label);
2466 rv = parse_for_go(parser, block, out);
2469 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2470 parseerror(parser, "internal error: label stack corrupted");
2476 vec_pop(parser->breaks);
2477 vec_pop(parser->continues);
2481 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2484 ast_expression *initexpr, *cond, *increment, *ontrue;
2489 lex_ctx_t ctx = parser_ctx(parser);
2491 parser_enterblock(parser);
2498 /* parse into the expression */
2499 if (!parser_next(parser)) {
2500 parseerror(parser, "expected 'for' initializer after opening paren");
2505 if (parser->tok == TOKEN_IDENT)
2506 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2508 if (typevar || parser->tok == TOKEN_TYPENAME) {
2509 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2512 else if (parser->tok != ';')
2514 initexpr = parse_expression_leave(parser, false, false, false);
2518 /* move on to condition */
2519 if (parser->tok != ';') {
2520 parseerror(parser, "expected semicolon after for-loop initializer");
2524 if (!parser_next(parser)) {
2525 parseerror(parser, "expected for-loop condition");
2530 /* parse the condition */
2531 if (parser->tok != ';') {
2532 cond = parse_expression_leave(parser, false, true, false);
2537 /* move on to incrementor */
2538 if (parser->tok != ';') {
2539 parseerror(parser, "expected semicolon after for-loop initializer");
2542 if (!parser_next(parser)) {
2543 parseerror(parser, "expected for-loop condition");
2547 /* parse the incrementor */
2548 if (parser->tok != ')') {
2549 lex_ctx_t condctx = parser_ctx(parser);
2550 increment = parse_expression_leave(parser, false, false, false);
2553 if (!ast_side_effects(increment)) {
2554 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2560 if (parser->tok != ')') {
2561 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2564 /* parse into the 'then' branch */
2565 if (!parser_next(parser)) {
2566 parseerror(parser, "expected for-loop body");
2569 if (!parse_statement_or_block(parser, &ontrue))
2573 cond = process_condition(parser, cond, &ifnot);
2577 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2578 *out = (ast_expression*)aloop;
2580 if (!parser_leaveblock(parser)) {
2586 if (initexpr) ast_unref(initexpr);
2587 if (cond) ast_unref(cond);
2588 if (increment) ast_unref(increment);
2589 (void)!parser_leaveblock(parser);
2593 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2595 ast_expression *exp = NULL;
2596 ast_expression *var = NULL;
2597 ast_return *ret = NULL;
2598 ast_value *retval = parser->function->return_value;
2599 ast_value *expected = parser->function->vtype;
2601 lex_ctx_t ctx = parser_ctx(parser);
2603 (void)block; /* not touching */
2605 if (!parser_next(parser)) {
2606 parseerror(parser, "expected return expression");
2610 /* return assignments */
2611 if (parser->tok == '=') {
2612 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
2613 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
2617 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
2619 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
2620 parseerror(parser, "invalid return type: `%s'", ty1);
2624 if (!parser_next(parser)) {
2625 parseerror(parser, "expected return assignment expression");
2629 if (!(exp = parse_expression_leave(parser, false, false, false)))
2632 /* prepare the return value */
2634 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
2635 ast_type_adopt(retval, expected->expression.next);
2636 parser->function->return_value = retval;
2639 if (!ast_compare_type(exp, (ast_expression*)retval)) {
2640 char ty1[1024], ty2[1024];
2641 ast_type_to_string(exp, ty1, sizeof(ty1));
2642 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
2643 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
2646 /* store to 'return' local variable */
2647 var = (ast_expression*)ast_store_new(
2649 type_store_instr[expected->expression.next->vtype],
2650 (ast_expression*)retval, exp);
2657 if (parser->tok != ';')
2658 parseerror(parser, "missing semicolon after return assignment");
2659 else if (!parser_next(parser))
2660 parseerror(parser, "parse error after return assignment");
2666 if (parser->tok != ';') {
2667 exp = parse_expression(parser, false, false);
2671 if (exp->vtype != TYPE_NIL &&
2672 exp->vtype != ((ast_expression*)expected)->next->vtype)
2674 parseerror(parser, "return with invalid expression");
2677 ret = ast_return_new(ctx, exp);
2683 if (!parser_next(parser))
2684 parseerror(parser, "parse error");
2686 if (!retval && expected->expression.next->vtype != TYPE_VOID)
2688 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2690 ret = ast_return_new(ctx, (ast_expression*)retval);
2692 *out = (ast_expression*)ret;
2696 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2699 unsigned int levels = 0;
2700 lex_ctx_t ctx = parser_ctx(parser);
2701 const char **loops = (is_continue ? parser->continues : parser->breaks);
2703 (void)block; /* not touching */
2704 if (!parser_next(parser)) {
2705 parseerror(parser, "expected semicolon or loop label");
2709 if (!vec_size(loops)) {
2711 parseerror(parser, "`continue` can only be used inside loops");
2713 parseerror(parser, "`break` can only be used inside loops or switches");
2716 if (parser->tok == TOKEN_IDENT) {
2717 if (!OPTS_FLAG(LOOP_LABELS))
2718 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2719 i = vec_size(loops);
2721 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2724 parseerror(parser, "no such loop to %s: `%s`",
2725 (is_continue ? "continue" : "break out of"),
2726 parser_tokval(parser));
2731 if (!parser_next(parser)) {
2732 parseerror(parser, "expected semicolon");
2737 if (parser->tok != ';') {
2738 parseerror(parser, "expected semicolon");
2742 if (!parser_next(parser))
2743 parseerror(parser, "parse error");
2745 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2749 /* returns true when it was a variable qualifier, false otherwise!
2750 * on error, cvq is set to CV_WRONG
2757 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2759 bool had_const = false;
2760 bool had_var = false;
2761 bool had_noref = false;
2762 bool had_attrib = false;
2763 bool had_static = false;
2766 static attribute_t attributes[] = {
2767 { "noreturn", AST_FLAG_NORETURN },
2768 { "inline", AST_FLAG_INLINE },
2769 { "eraseable", AST_FLAG_ERASEABLE },
2770 { "accumulate", AST_FLAG_ACCUMULATE },
2771 { "last", AST_FLAG_FINAL_DECL }
2778 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2780 /* parse an attribute */
2781 if (!parser_next(parser)) {
2782 parseerror(parser, "expected attribute after `[[`");
2787 for (i = 0; i < GMQCC_ARRAY_COUNT(attributes); i++) {
2788 if (!strcmp(parser_tokval(parser), attributes[i].name)) {
2789 flags |= attributes[i].flag;
2790 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2791 parseerror(parser, "`%s` attribute has no parameters, expected `]]`",
2792 attributes[i].name);
2800 if (i != GMQCC_ARRAY_COUNT(attributes))
2804 if (!strcmp(parser_tokval(parser), "noref")) {
2806 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2807 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2812 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
2813 flags |= AST_FLAG_ALIAS;
2816 if (!parser_next(parser)) {
2817 parseerror(parser, "parse error in attribute");
2821 if (parser->tok == '(') {
2822 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2823 parseerror(parser, "`alias` attribute missing parameter");
2827 *message = util_strdup(parser_tokval(parser));
2829 if (!parser_next(parser)) {
2830 parseerror(parser, "parse error in attribute");
2834 if (parser->tok != ')') {
2835 parseerror(parser, "`alias` attribute expected `)` after parameter");
2839 if (!parser_next(parser)) {
2840 parseerror(parser, "parse error in attribute");
2845 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2846 parseerror(parser, "`alias` attribute expected `]]`");
2850 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2851 flags |= AST_FLAG_DEPRECATED;
2854 if (!parser_next(parser)) {
2855 parseerror(parser, "parse error in attribute");
2859 if (parser->tok == '(') {
2860 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2861 parseerror(parser, "`deprecated` attribute missing parameter");
2865 *message = util_strdup(parser_tokval(parser));
2867 if (!parser_next(parser)) {
2868 parseerror(parser, "parse error in attribute");
2872 if(parser->tok != ')') {
2873 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2877 if (!parser_next(parser)) {
2878 parseerror(parser, "parse error in attribute");
2883 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2884 parseerror(parser, "`deprecated` attribute expected `]]`");
2887 if (*message) mem_d(*message);
2893 else if (!strcmp(parser_tokval(parser), "coverage") && !(flags & AST_FLAG_COVERAGE)) {
2894 flags |= AST_FLAG_COVERAGE;
2895 if (!parser_next(parser)) {
2897 parseerror(parser, "parse error in coverage attribute");
2901 if (parser->tok == '(') {
2902 if (!parser_next(parser)) {
2904 parseerror(parser, "invalid parameter for coverage() attribute\n"
2905 "valid are: block");
2909 if (parser->tok != ')') {
2911 if (parser->tok != TOKEN_IDENT)
2912 goto bad_coverage_arg;
2913 if (!strcmp(parser_tokval(parser), "block"))
2914 flags |= AST_FLAG_BLOCK_COVERAGE;
2915 else if (!strcmp(parser_tokval(parser), "none"))
2916 flags &= ~(AST_FLAG_COVERAGE_MASK);
2918 goto bad_coverage_arg;
2919 if (!parser_next(parser))
2920 goto error_in_coverage;
2921 if (parser->tok == ',') {
2922 if (!parser_next(parser))
2923 goto error_in_coverage;
2925 } while (parser->tok != ')');
2927 if (parser->tok != ')' || !parser_next(parser))
2928 goto error_in_coverage;
2930 /* without parameter [[coverage]] equals [[coverage(block)]] */
2931 flags |= AST_FLAG_BLOCK_COVERAGE;
2936 /* Skip tokens until we hit a ]] */
2937 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2938 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2939 if (!parser_next(parser)) {
2940 parseerror(parser, "error inside attribute");
2947 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2949 else if (!strcmp(parser_tokval(parser), "const"))
2951 else if (!strcmp(parser_tokval(parser), "var"))
2953 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2955 else if (!strcmp(parser_tokval(parser), "noref"))
2957 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2964 if (!parser_next(parser))
2974 *is_static = had_static;
2978 parseerror(parser, "parse error after variable qualifier");
2983 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2984 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2989 /* skip the 'while' and get the body */
2990 if (!parser_next(parser)) {
2991 if (OPTS_FLAG(LOOP_LABELS))
2992 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2994 parseerror(parser, "expected 'switch' operand in parenthesis");
2998 if (parser->tok == ':') {
2999 if (!OPTS_FLAG(LOOP_LABELS))
3000 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3001 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3002 parseerror(parser, "expected loop label");
3005 label = util_strdup(parser_tokval(parser));
3006 if (!parser_next(parser)) {
3008 parseerror(parser, "expected 'switch' operand in parenthesis");
3013 if (parser->tok != '(') {
3014 parseerror(parser, "expected 'switch' operand in parenthesis");
3018 vec_push(parser->breaks, label);
3020 rv = parse_switch_go(parser, block, out);
3023 if (vec_last(parser->breaks) != label) {
3024 parseerror(parser, "internal error: label stack corrupted");
3030 vec_pop(parser->breaks);
3035 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3037 ast_expression *operand;
3040 ast_switch *switchnode;
3041 ast_switch_case swcase;
3044 bool noref, is_static;
3045 uint32_t qflags = 0;
3047 lex_ctx_t ctx = parser_ctx(parser);
3049 (void)block; /* not touching */
3052 /* parse into the expression */
3053 if (!parser_next(parser)) {
3054 parseerror(parser, "expected switch operand");
3057 /* parse the operand */
3058 operand = parse_expression_leave(parser, false, false, false);
3062 switchnode = ast_switch_new(ctx, operand);
3065 if (parser->tok != ')') {
3066 ast_delete(switchnode);
3067 parseerror(parser, "expected closing paren after 'switch' operand");
3071 /* parse over the opening paren */
3072 if (!parser_next(parser) || parser->tok != '{') {
3073 ast_delete(switchnode);
3074 parseerror(parser, "expected list of cases");
3078 if (!parser_next(parser)) {
3079 ast_delete(switchnode);
3080 parseerror(parser, "expected 'case' or 'default'");
3084 /* new block; allow some variables to be declared here */
3085 parser_enterblock(parser);
3088 if (parser->tok == TOKEN_IDENT)
3089 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3090 if (typevar || parser->tok == TOKEN_TYPENAME) {
3091 if (!parse_variable(parser, block, true, CV_NONE, typevar, false, false, 0, NULL)) {
3092 ast_delete(switchnode);
3097 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3099 if (cvq == CV_WRONG) {
3100 ast_delete(switchnode);
3103 if (!parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, NULL)) {
3104 ast_delete(switchnode);
3113 while (parser->tok != '}') {
3114 ast_block *caseblock;
3116 if (!strcmp(parser_tokval(parser), "case")) {
3117 if (!parser_next(parser)) {
3118 ast_delete(switchnode);
3119 parseerror(parser, "expected expression for case");
3122 swcase.value = parse_expression_leave(parser, false, false, false);
3123 if (!swcase.value) {
3124 ast_delete(switchnode);
3125 parseerror(parser, "expected expression for case");
3128 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3129 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3130 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3136 else if (!strcmp(parser_tokval(parser), "default")) {
3137 swcase.value = NULL;
3138 if (!parser_next(parser)) {
3139 ast_delete(switchnode);
3140 parseerror(parser, "expected colon");
3145 ast_delete(switchnode);
3146 parseerror(parser, "expected 'case' or 'default'");
3150 /* Now the colon and body */
3151 if (parser->tok != ':') {
3152 if (swcase.value) ast_unref(swcase.value);
3153 ast_delete(switchnode);
3154 parseerror(parser, "expected colon");
3158 if (!parser_next(parser)) {
3159 if (swcase.value) ast_unref(swcase.value);
3160 ast_delete(switchnode);
3161 parseerror(parser, "expected statements or case");
3164 caseblock = ast_block_new(parser_ctx(parser));
3166 if (swcase.value) ast_unref(swcase.value);
3167 ast_delete(switchnode);
3170 swcase.code = (ast_expression*)caseblock;
3171 vec_push(switchnode->cases, swcase);
3173 ast_expression *expr;
3174 if (parser->tok == '}')
3176 if (parser->tok == TOKEN_KEYWORD) {
3177 if (!strcmp(parser_tokval(parser), "case") ||
3178 !strcmp(parser_tokval(parser), "default"))
3183 if (!parse_statement(parser, caseblock, &expr, true)) {
3184 ast_delete(switchnode);
3189 if (!ast_block_add_expr(caseblock, expr)) {
3190 ast_delete(switchnode);
3196 parser_leaveblock(parser);
3199 if (parser->tok != '}') {
3200 ast_delete(switchnode);
3201 parseerror(parser, "expected closing paren of case list");
3204 if (!parser_next(parser)) {
3205 ast_delete(switchnode);
3206 parseerror(parser, "parse error after switch");
3209 *out = (ast_expression*)switchnode;
3213 /* parse computed goto sides */
3214 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3215 ast_expression *on_true;
3216 ast_expression *on_false;
3217 ast_expression *cond;
3222 if (ast_istype(*side, ast_ternary)) {
3223 ast_ternary *tern = (ast_ternary*)*side;
3224 on_true = parse_goto_computed(parser, &tern->on_true);
3225 on_false = parse_goto_computed(parser, &tern->on_false);
3227 if (!on_true || !on_false) {
3228 parseerror(parser, "expected label or expression in ternary");
3229 if (on_true) ast_unref(on_true);
3230 if (on_false) ast_unref(on_false);
3238 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3239 } else if (ast_istype(*side, ast_label)) {
3240 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3241 ast_goto_set_label(gt, ((ast_label*)*side));
3243 return (ast_expression*)gt;
3248 static bool parse_goto(parser_t *parser, ast_expression **out)
3250 ast_goto *gt = NULL;
3251 ast_expression *lbl;
3253 if (!parser_next(parser))
3256 if (parser->tok != TOKEN_IDENT) {
3257 ast_expression *expression;
3259 /* could be an expression i.e computed goto :-) */
3260 if (parser->tok != '(') {
3261 parseerror(parser, "expected label name after `goto`");
3265 /* failed to parse expression for goto */
3266 if (!(expression = parse_expression(parser, false, true)) ||
3267 !(*out = parse_goto_computed(parser, &expression))) {
3268 parseerror(parser, "invalid goto expression");
3270 ast_unref(expression);
3277 /* not computed goto */
3278 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3279 lbl = parser_find_label(parser, gt->name);
3281 if (!ast_istype(lbl, ast_label)) {
3282 parseerror(parser, "internal error: label is not an ast_label");
3286 ast_goto_set_label(gt, (ast_label*)lbl);
3289 vec_push(parser->gotos, gt);
3291 if (!parser_next(parser) || parser->tok != ';') {
3292 parseerror(parser, "semicolon expected after goto label");
3295 if (!parser_next(parser)) {
3296 parseerror(parser, "parse error after goto");
3300 *out = (ast_expression*)gt;
3304 static bool parse_skipwhite(parser_t *parser)
3307 if (!parser_next(parser))
3309 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3310 return parser->tok < TOKEN_ERROR;
3313 static bool parse_eol(parser_t *parser)
3315 if (!parse_skipwhite(parser))
3317 return parser->tok == TOKEN_EOL;
3320 static bool parse_pragma_do(parser_t *parser)
3322 if (!parser_next(parser) ||
3323 parser->tok != TOKEN_IDENT ||
3324 strcmp(parser_tokval(parser), "pragma"))
3326 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3329 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3330 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3334 if (!strcmp(parser_tokval(parser), "noref")) {
3335 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3336 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3339 parser->noref = !!parser_token(parser)->constval.i;
3340 if (!parse_eol(parser)) {
3341 parseerror(parser, "parse error after `noref` pragma");
3347 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3350 while (!parse_eol(parser)) {
3351 parser_next(parser);
3360 static bool parse_pragma(parser_t *parser)
3363 parser->lex->flags.preprocessing = true;
3364 parser->lex->flags.mergelines = true;
3365 rv = parse_pragma_do(parser);
3366 if (parser->tok != TOKEN_EOL) {
3367 parseerror(parser, "junk after pragma");
3370 parser->lex->flags.preprocessing = false;
3371 parser->lex->flags.mergelines = false;
3372 if (!parser_next(parser)) {
3373 parseerror(parser, "parse error after pragma");
3379 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3381 bool noref, is_static;
3383 uint32_t qflags = 0;
3384 ast_value *typevar = NULL;
3385 char *vstring = NULL;
3389 if (parser->tok == TOKEN_IDENT)
3390 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3392 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.' || parser->tok == TOKEN_DOTS)
3394 /* local variable */
3396 parseerror(parser, "cannot declare a variable from here");
3399 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3400 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3403 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3407 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3409 if (cvq == CV_WRONG)
3411 return parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, vstring);
3413 else if (parser->tok == TOKEN_KEYWORD)
3415 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3420 if (!parser_next(parser)) {
3421 parseerror(parser, "parse error after __builtin_debug_printtype");
3425 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3427 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3428 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3429 if (!parser_next(parser)) {
3430 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3436 if (!parse_statement(parser, block, out, allow_cases))
3439 con_out("__builtin_debug_printtype: got no output node\n");
3442 ast_type_to_string(*out, ty, sizeof(ty));
3443 con_out("__builtin_debug_printtype: `%s`\n", ty);
3448 else if (!strcmp(parser_tokval(parser), "return"))
3450 return parse_return(parser, block, out);
3452 else if (!strcmp(parser_tokval(parser), "if"))
3454 return parse_if(parser, block, out);
3456 else if (!strcmp(parser_tokval(parser), "while"))
3458 return parse_while(parser, block, out);
3460 else if (!strcmp(parser_tokval(parser), "do"))
3462 return parse_dowhile(parser, block, out);
3464 else if (!strcmp(parser_tokval(parser), "for"))
3466 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3467 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3470 return parse_for(parser, block, out);
3472 else if (!strcmp(parser_tokval(parser), "break"))
3474 return parse_break_continue(parser, block, out, false);
3476 else if (!strcmp(parser_tokval(parser), "continue"))
3478 return parse_break_continue(parser, block, out, true);
3480 else if (!strcmp(parser_tokval(parser), "switch"))
3482 return parse_switch(parser, block, out);
3484 else if (!strcmp(parser_tokval(parser), "case") ||
3485 !strcmp(parser_tokval(parser), "default"))
3488 parseerror(parser, "unexpected 'case' label");
3493 else if (!strcmp(parser_tokval(parser), "goto"))
3495 return parse_goto(parser, out);
3497 else if (!strcmp(parser_tokval(parser), "typedef"))
3499 if (!parser_next(parser)) {
3500 parseerror(parser, "expected type definition after 'typedef'");
3503 return parse_typedef(parser);
3505 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3508 else if (parser->tok == '{')
3511 inner = parse_block(parser);
3514 *out = (ast_expression*)inner;
3517 else if (parser->tok == ':')
3521 if (!parser_next(parser)) {
3522 parseerror(parser, "expected label name");
3525 if (parser->tok != TOKEN_IDENT) {
3526 parseerror(parser, "label must be an identifier");
3529 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3531 if (!label->undefined) {
3532 parseerror(parser, "label `%s` already defined", label->name);
3535 label->undefined = false;
3538 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3539 vec_push(parser->labels, label);
3541 *out = (ast_expression*)label;
3542 if (!parser_next(parser)) {
3543 parseerror(parser, "parse error after label");
3546 for (i = 0; i < vec_size(parser->gotos); ++i) {
3547 if (!strcmp(parser->gotos[i]->name, label->name)) {
3548 ast_goto_set_label(parser->gotos[i], label);
3549 vec_remove(parser->gotos, i, 1);
3555 else if (parser->tok == ';')
3557 if (!parser_next(parser)) {
3558 parseerror(parser, "parse error after empty statement");
3565 lex_ctx_t ctx = parser_ctx(parser);
3566 ast_expression *exp = parse_expression(parser, false, false);
3570 if (!ast_side_effects(exp)) {
3571 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3578 static bool parse_enum(parser_t *parser)
3581 bool reverse = false;
3583 ast_value **values = NULL;
3584 ast_value *var = NULL;
3587 ast_expression *old;
3589 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3590 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3594 /* enumeration attributes (can add more later) */
3595 if (parser->tok == ':') {
3596 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3597 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3602 if (!strcmp(parser_tokval(parser), "flag")) {
3606 else if (!strcmp(parser_tokval(parser), "reverse")) {
3610 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3614 if (!parser_next(parser) || parser->tok != '{') {
3615 parseerror(parser, "expected `{` after enum attribute ");
3621 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3622 if (parser->tok == '}') {
3623 /* allow an empty enum */
3626 parseerror(parser, "expected identifier or `}`");
3630 old = parser_find_field(parser, parser_tokval(parser));
3632 old = parser_find_global(parser, parser_tokval(parser));
3634 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3635 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3639 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3640 vec_push(values, var);
3641 var->cvq = CV_CONST;
3642 var->hasvalue = true;
3644 /* for flagged enumerations increment in POTs of TWO */
3645 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3646 parser_addglobal(parser, var->name, (ast_expression*)var);
3648 if (!parser_next(parser)) {
3649 parseerror(parser, "expected `=`, `}` or comma after identifier");
3653 if (parser->tok == ',')
3655 if (parser->tok == '}')
3657 if (parser->tok != '=') {
3658 parseerror(parser, "expected `=`, `}` or comma after identifier");
3662 if (!parser_next(parser)) {
3663 parseerror(parser, "expected expression after `=`");
3667 /* We got a value! */
3668 old = parse_expression_leave(parser, true, false, false);
3669 asvalue = (ast_value*)old;
3670 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3671 compile_error(ast_ctx(var), "constant value or expression expected");
3674 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3676 if (parser->tok == '}')
3678 if (parser->tok != ',') {
3679 parseerror(parser, "expected `}` or comma after expression");
3684 /* patch them all (for reversed attribute) */
3687 for (i = 0; i < vec_size(values); i++)
3688 values[i]->constval.vfloat = vec_size(values) - i - 1;
3691 if (parser->tok != '}') {
3692 parseerror(parser, "internal error: breaking without `}`");
3696 if (!parser_next(parser) || parser->tok != ';') {
3697 parseerror(parser, "expected semicolon after enumeration");
3701 if (!parser_next(parser)) {
3702 parseerror(parser, "parse error after enumeration");
3714 static bool parse_block_into(parser_t *parser, ast_block *block)
3718 parser_enterblock(parser);
3720 if (!parser_next(parser)) { /* skip the '{' */
3721 parseerror(parser, "expected function body");
3725 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3727 ast_expression *expr = NULL;
3728 if (parser->tok == '}')
3731 if (!parse_statement(parser, block, &expr, false)) {
3732 /* parseerror(parser, "parse error"); */
3738 if (!ast_block_add_expr(block, expr)) {
3745 if (parser->tok != '}') {
3748 (void)parser_next(parser);
3752 if (!parser_leaveblock(parser))
3754 return retval && !!block;
3757 static ast_block* parse_block(parser_t *parser)
3760 block = ast_block_new(parser_ctx(parser));
3763 if (!parse_block_into(parser, block)) {
3764 ast_block_delete(block);
3770 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3772 if (parser->tok == '{') {
3773 *out = (ast_expression*)parse_block(parser);
3776 return parse_statement(parser, NULL, out, false);
3779 static bool create_vector_members(ast_value *var, ast_member **me)
3782 size_t len = strlen(var->name);
3784 for (i = 0; i < 3; ++i) {
3785 char *name = (char*)mem_a(len+3);
3786 memcpy(name, var->name, len);
3788 name[len+1] = 'x'+i;
3790 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3799 do { ast_member_delete(me[--i]); } while(i);
3803 static bool parse_function_body(parser_t *parser, ast_value *var)
3805 ast_block *block = NULL;
3810 ast_expression *framenum = NULL;
3811 ast_expression *nextthink = NULL;
3812 /* None of the following have to be deleted */
3813 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3814 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3815 bool has_frame_think;
3819 has_frame_think = false;
3820 old = parser->function;
3822 if (var->expression.flags & AST_FLAG_ALIAS) {
3823 parseerror(parser, "function aliases cannot have bodies");
3827 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3828 parseerror(parser, "gotos/labels leaking");
3832 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
3833 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3834 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
3840 if (parser->tok == '[') {
3841 /* got a frame definition: [ framenum, nextthink ]
3842 * this translates to:
3843 * self.frame = framenum;
3844 * self.nextthink = time + 0.1;
3845 * self.think = nextthink;
3849 fld_think = parser_find_field(parser, "think");
3850 fld_nextthink = parser_find_field(parser, "nextthink");
3851 fld_frame = parser_find_field(parser, "frame");
3852 if (!fld_think || !fld_nextthink || !fld_frame) {
3853 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3854 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3857 gbl_time = parser_find_global(parser, "time");
3858 gbl_self = parser_find_global(parser, "self");
3859 if (!gbl_time || !gbl_self) {
3860 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3861 parseerror(parser, "please declare the following globals: `time`, `self`");
3865 if (!parser_next(parser))
3868 framenum = parse_expression_leave(parser, true, false, false);
3870 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3873 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3874 ast_unref(framenum);
3875 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3879 if (parser->tok != ',') {
3880 ast_unref(framenum);
3881 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3882 parseerror(parser, "Got a %i\n", parser->tok);
3886 if (!parser_next(parser)) {
3887 ast_unref(framenum);
3891 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3893 /* qc allows the use of not-yet-declared functions here
3894 * - this automatically creates a prototype */
3895 ast_value *thinkfunc;
3896 ast_expression *functype = fld_think->next;
3898 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
3899 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
3900 ast_unref(framenum);
3901 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3904 ast_type_adopt(thinkfunc, functype);
3906 if (!parser_next(parser)) {
3907 ast_unref(framenum);
3908 ast_delete(thinkfunc);
3912 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3914 nextthink = (ast_expression*)thinkfunc;
3917 nextthink = parse_expression_leave(parser, true, false, false);
3919 ast_unref(framenum);
3920 parseerror(parser, "expected a think-function in [frame,think] notation");
3925 if (!ast_istype(nextthink, ast_value)) {
3926 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3930 if (retval && parser->tok != ']') {
3931 parseerror(parser, "expected closing `]` for [frame,think] notation");
3935 if (retval && !parser_next(parser)) {
3939 if (retval && parser->tok != '{') {
3940 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3945 ast_unref(nextthink);
3946 ast_unref(framenum);
3950 has_frame_think = true;
3953 block = ast_block_new(parser_ctx(parser));
3955 parseerror(parser, "failed to allocate block");
3956 if (has_frame_think) {
3957 ast_unref(nextthink);
3958 ast_unref(framenum);
3963 if (has_frame_think) {
3964 if (!OPTS_FLAG(EMULATE_STATE)) {
3965 ast_state *state_op = ast_state_new(parser_ctx(parser), framenum, nextthink);
3966 if (!ast_block_add_expr(block, (ast_expression*)state_op)) {
3967 parseerror(parser, "failed to generate state op for [frame,think]");
3968 ast_unref(nextthink);
3969 ast_unref(framenum);
3974 /* emulate OP_STATE in code: */
3976 ast_expression *self_frame;
3977 ast_expression *self_nextthink;
3978 ast_expression *self_think;
3979 ast_expression *time_plus_1;
3980 ast_store *store_frame;
3981 ast_store *store_nextthink;
3982 ast_store *store_think;
3984 float frame_delta = 1.0f / (float)OPTS_OPTION_U32(OPTION_STATE_FPS);
3986 ctx = parser_ctx(parser);
3987 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3988 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3989 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3991 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3992 gbl_time, (ast_expression*)fold_constgen_float(parser->fold, frame_delta, false));
3994 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3995 if (self_frame) ast_delete(self_frame);
3996 if (self_nextthink) ast_delete(self_nextthink);
3997 if (self_think) ast_delete(self_think);
3998 if (time_plus_1) ast_delete(time_plus_1);
4004 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
4005 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
4006 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
4009 ast_delete(self_frame);
4012 if (!store_nextthink) {
4013 ast_delete(self_nextthink);
4017 ast_delete(self_think);
4021 if (store_frame) ast_delete(store_frame);
4022 if (store_nextthink) ast_delete(store_nextthink);
4023 if (store_think) ast_delete(store_think);
4026 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
4027 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
4028 !ast_block_add_expr(block, (ast_expression*)store_think))
4035 parseerror(parser, "failed to generate code for [frame,think]");
4036 ast_unref(nextthink);
4037 ast_unref(framenum);
4044 if (var->hasvalue) {
4045 if (!(var->expression.flags & AST_FLAG_ACCUMULATE)) {
4046 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
4047 ast_block_delete(block);
4050 func = var->constval.vfunc;
4053 parseerror(parser, "internal error: NULL function: `%s`", var->name);
4054 ast_block_delete(block);
4058 func = ast_function_new(ast_ctx(var), var->name, var);
4061 parseerror(parser, "failed to allocate function for `%s`", var->name);
4062 ast_block_delete(block);
4065 vec_push(parser->functions, func);
4068 parser_enterblock(parser);
4070 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
4072 ast_value *param = var->expression.params[parami];
4075 if (param->expression.vtype != TYPE_VECTOR &&
4076 (param->expression.vtype != TYPE_FIELD ||
4077 param->expression.next->vtype != TYPE_VECTOR))
4082 if (!create_vector_members(param, me)) {
4083 ast_block_delete(block);
4087 for (e = 0; e < 3; ++e) {
4088 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4089 ast_block_collect(block, (ast_expression*)me[e]);
4093 if (var->argcounter && !func->argc) {
4094 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4095 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4099 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC && !func->varargs) {
4101 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4102 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4103 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4104 varargs->expression.count = 0;
4105 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4106 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4107 ast_delete(varargs);
4108 ast_block_delete(block);
4111 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4112 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4113 ast_delete(varargs);
4114 ast_block_delete(block);
4117 func->varargs = varargs;
4118 func->fixedparams = (ast_value*)fold_constgen_float(parser->fold, vec_size(var->expression.params), false);
4121 parser->function = func;
4122 if (!parse_block_into(parser, block)) {
4123 ast_block_delete(block);
4127 vec_push(func->blocks, block);
4129 parser->function = old;
4130 if (!parser_leaveblock(parser))
4132 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4133 parseerror(parser, "internal error: local scopes left");
4137 if (parser->tok == ';')
4138 return parser_next(parser);
4139 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4140 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4144 (void)!parser_leaveblock(parser);
4145 vec_pop(parser->functions);
4146 ast_function_delete(func);
4147 var->constval.vfunc = NULL;
4150 parser->function = old;
4154 static ast_expression *array_accessor_split(
4159 ast_expression *left,
4160 ast_expression *right
4166 lex_ctx_t ctx = ast_ctx(array);
4168 if (!left || !right) {
4169 if (left) ast_delete(left);
4170 if (right) ast_delete(right);
4174 cmp = ast_binary_new(ctx, INSTR_LT,
4175 (ast_expression*)index,
4176 (ast_expression*)fold_constgen_float(parser->fold, middle, false));
4180 parseerror(parser, "internal error: failed to create comparison for array setter");
4184 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4186 ast_delete(cmp); /* will delete left and right */
4187 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4191 return (ast_expression*)ifthen;
4194 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4196 lex_ctx_t ctx = ast_ctx(array);
4198 if (from+1 == afterend) {
4199 /* set this value */
4202 ast_array_index *subscript;
4204 int assignop = type_store_instr[value->expression.vtype];
4206 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4207 assignop = INSTR_STORE_V;
4209 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from, false));
4213 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4215 ast_delete(subscript);
4219 block = ast_block_new(ctx);
4225 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4230 ret = ast_return_new(ctx, NULL);
4236 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4241 return (ast_expression*)block;
4243 ast_expression *left, *right;
4244 size_t diff = afterend - from;
4245 size_t middle = from + diff/2;
4246 left = array_setter_node(parser, array, index, value, from, middle);
4247 right = array_setter_node(parser, array, index, value, middle, afterend);
4248 return array_accessor_split(parser, array, index, middle, left, right);
4252 static ast_expression *array_field_setter_node(
4261 lex_ctx_t ctx = ast_ctx(array);
4263 if (from+1 == afterend) {
4264 /* set this value */
4267 ast_entfield *entfield;
4268 ast_array_index *subscript;
4270 int assignop = type_storep_instr[value->expression.vtype];
4272 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4273 assignop = INSTR_STOREP_V;
4275 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from, false));
4279 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4280 subscript->expression.vtype = TYPE_FIELD;
4282 entfield = ast_entfield_new_force(ctx,
4283 (ast_expression*)entity,
4284 (ast_expression*)subscript,
4285 (ast_expression*)subscript);
4287 ast_delete(subscript);
4291 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4293 ast_delete(entfield);
4297 block = ast_block_new(ctx);
4303 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4308 ret = ast_return_new(ctx, NULL);
4314 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4319 return (ast_expression*)block;
4321 ast_expression *left, *right;
4322 size_t diff = afterend - from;
4323 size_t middle = from + diff/2;
4324 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4325 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4326 return array_accessor_split(parser, array, index, middle, left, right);
4330 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4332 lex_ctx_t ctx = ast_ctx(array);
4334 if (from+1 == afterend) {
4336 ast_array_index *subscript;
4338 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from, false));
4342 ret = ast_return_new(ctx, (ast_expression*)subscript);
4344 ast_delete(subscript);
4348 return (ast_expression*)ret;
4350 ast_expression *left, *right;
4351 size_t diff = afterend - from;
4352 size_t middle = from + diff/2;
4353 left = array_getter_node(parser, array, index, from, middle);
4354 right = array_getter_node(parser, array, index, middle, afterend);
4355 return array_accessor_split(parser, array, index, middle, left, right);
4359 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4361 ast_function *func = NULL;
4362 ast_value *fval = NULL;
4363 ast_block *body = NULL;
4365 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4367 parseerror(parser, "failed to create accessor function value");
4370 fval->expression.flags &= ~(AST_FLAG_COVERAGE_MASK);
4372 func = ast_function_new(ast_ctx(array), funcname, fval);
4375 parseerror(parser, "failed to create accessor function node");
4379 body = ast_block_new(ast_ctx(array));
4381 parseerror(parser, "failed to create block for array accessor");
4387 vec_push(func->blocks, body);
4390 vec_push(parser->accessors, fval);
4395 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4397 ast_value *index = NULL;
4398 ast_value *value = NULL;
4402 if (!ast_istype(array->expression.next, ast_value)) {
4403 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4407 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4409 func = fval->constval.vfunc;
4410 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4412 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4413 value = ast_value_copy((ast_value*)array->expression.next);
4415 if (!index || !value) {
4416 parseerror(parser, "failed to create locals for array accessor");
4419 (void)!ast_value_set_name(value, "value"); /* not important */
4420 vec_push(fval->expression.params, index);
4421 vec_push(fval->expression.params, value);
4423 array->setter = fval;
4426 if (index) ast_delete(index);
4427 if (value) ast_delete(value);
4433 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4435 ast_expression *root = NULL;
4436 root = array_setter_node(parser, array,
4437 array->setter->expression.params[0],
4438 array->setter->expression.params[1],
4439 0, array->expression.count);
4441 parseerror(parser, "failed to build accessor search tree");
4444 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4451 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4453 if (!parser_create_array_setter_proto(parser, array, funcname))
4455 return parser_create_array_setter_impl(parser, array);
4458 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4460 ast_expression *root = NULL;
4461 ast_value *entity = NULL;
4462 ast_value *index = NULL;
4463 ast_value *value = NULL;
4467 if (!ast_istype(array->expression.next, ast_value)) {
4468 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4472 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4474 func = fval->constval.vfunc;
4475 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4477 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4478 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4479 value = ast_value_copy((ast_value*)array->expression.next);
4480 if (!entity || !index || !value) {
4481 parseerror(parser, "failed to create locals for array accessor");
4484 (void)!ast_value_set_name(value, "value"); /* not important */
4485 vec_push(fval->expression.params, entity);
4486 vec_push(fval->expression.params, index);
4487 vec_push(fval->expression.params, value);
4489 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4491 parseerror(parser, "failed to build accessor search tree");
4495 array->setter = fval;
4496 return ast_block_add_expr(func->blocks[0], root);
4498 if (entity) ast_delete(entity);
4499 if (index) ast_delete(index);
4500 if (value) ast_delete(value);
4501 if (root) ast_delete(root);
4507 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4509 ast_value *index = NULL;
4513 /* NOTE: checking array->expression.next rather than elemtype since
4514 * for fields elemtype is a temporary fieldtype.
4516 if (!ast_istype(array->expression.next, ast_value)) {
4517 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4521 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4523 func = fval->constval.vfunc;
4524 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4526 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4529 parseerror(parser, "failed to create locals for array accessor");
4532 vec_push(fval->expression.params, index);
4534 array->getter = fval;
4537 if (index) ast_delete(index);
4543 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4545 ast_expression *root = NULL;
4547 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4549 parseerror(parser, "failed to build accessor search tree");
4552 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4559 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4561 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4563 return parser_create_array_getter_impl(parser, array);
4566 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4574 bool variadic = false;
4575 ast_value *varparam = NULL;
4576 char *argcounter = NULL;
4578 ctx = parser_ctx(parser);
4580 /* for the sake of less code we parse-in in this function */
4581 if (!parser_next(parser)) {
4583 parseerror(parser, "expected parameter list");
4589 /* parse variables until we hit a closing paren */
4590 while (parser->tok != ')') {
4591 bool is_varargs = false;
4594 /* there must be commas between them */
4595 if (parser->tok != ',') {
4596 parseerror(parser, "expected comma or end of parameter list");
4599 if (!parser_next(parser)) {
4600 parseerror(parser, "expected parameter");
4606 param = parse_typename(parser, NULL, NULL, &is_varargs);
4607 if (!param && !is_varargs)
4610 /* '...' indicates a varargs function */
4612 if (parser->tok != ')' && parser->tok != TOKEN_IDENT) {
4613 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4616 if (parser->tok == TOKEN_IDENT) {
4617 argcounter = util_strdup(parser_tokval(parser));
4618 if (!parser_next(parser) || parser->tok != ')') {
4619 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4624 vec_push(params, param);
4625 if (param->expression.vtype >= TYPE_VARIANT) {
4626 char tname[1024]; /* typename is reserved in C++ */
4627 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4628 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4631 /* type-restricted varargs */
4632 if (parser->tok == TOKEN_DOTS) {
4634 varparam = vec_last(params);
4636 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4637 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4640 if (parser->tok == TOKEN_IDENT) {
4641 argcounter = util_strdup(parser_tokval(parser));
4642 ast_value_set_name(param, argcounter);
4643 if (!parser_next(parser) || parser->tok != ')') {
4644 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4649 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC && param->name[0] == '<') {
4650 parseerror(parser, "parameter name omitted");
4656 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4660 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4661 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4664 if (!parser_next(parser)) {
4665 parseerror(parser, "parse error after typename");
4669 /* now turn 'var' into a function type */
4670 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4671 fval->expression.next = (ast_expression*)var;
4673 fval->expression.flags |= AST_FLAG_VARIADIC;
4676 var->expression.params = params;
4677 var->expression.varparam = (ast_expression*)varparam;
4678 var->argcounter = argcounter;
4687 ast_delete(varparam);
4689 for (i = 0; i < vec_size(params); ++i)
4690 ast_delete(params[i]);
4695 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4697 ast_expression *cexp;
4698 ast_value *cval, *tmp;
4701 ctx = parser_ctx(parser);
4703 if (!parser_next(parser)) {
4705 parseerror(parser, "expected array-size");
4709 if (parser->tok != ']') {
4710 cexp = parse_expression_leave(parser, true, false, false);
4712 if (!cexp || !ast_istype(cexp, ast_value)) {
4716 parseerror(parser, "expected array-size as constant positive integer");
4719 cval = (ast_value*)cexp;
4726 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4727 tmp->expression.next = (ast_expression*)var;
4731 if (cval->expression.vtype == TYPE_INTEGER)
4732 tmp->expression.count = cval->constval.vint;
4733 else if (cval->expression.vtype == TYPE_FLOAT)
4734 tmp->expression.count = cval->constval.vfloat;
4738 parseerror(parser, "array-size must be a positive integer constant");
4744 var->expression.count = -1;
4745 var->expression.flags |= AST_FLAG_ARRAY_INIT;
4748 if (parser->tok != ']') {
4750 parseerror(parser, "expected ']' after array-size");
4753 if (!parser_next(parser)) {
4755 parseerror(parser, "error after parsing array size");
4761 /* Parse a complete typename.
4762 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4763 * but when parsing variables separated by comma
4764 * 'storebase' should point to where the base-type should be kept.
4765 * The base type makes up every bit of type information which comes *before* the
4768 * NOTE: The value must either be named, have a NULL name, or a name starting
4769 * with '<'. In the first case, this will be the actual variable or type
4770 * name, in the other cases it is assumed that the name will appear
4771 * later, and an error is generated otherwise.
4773 * The following will be parsed in its entirety:
4775 * The 'basetype' in this case is 'void()'
4776 * and if there's a comma after it, say:
4778 * then the type-information 'void()' can be stored in 'storebase'
4780 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef, bool *is_vararg)
4782 ast_value *var, *tmp;
4785 const char *name = NULL;
4786 bool isfield = false;
4787 bool wasarray = false;
4788 size_t morefields = 0;
4790 bool vararg = (parser->tok == TOKEN_DOTS);
4792 ctx = parser_ctx(parser);
4794 /* types may start with a dot */
4795 if (parser->tok == '.' || parser->tok == TOKEN_DOTS) {
4797 if (parser->tok == TOKEN_DOTS)
4799 /* if we parsed a dot we need a typename now */
4800 if (!parser_next(parser)) {
4801 parseerror(parser, "expected typename for field definition");
4805 /* Further dots are handled seperately because they won't be part of the
4809 if (parser->tok == '.')
4811 else if (parser->tok == TOKEN_DOTS)
4816 if (!parser_next(parser)) {
4817 parseerror(parser, "expected typename for field definition");
4822 if (parser->tok == TOKEN_IDENT)
4823 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4824 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4825 if (vararg && is_vararg) {
4829 parseerror(parser, "expected typename");
4833 /* generate the basic type value */
4834 if (cached_typedef) {
4835 var = ast_value_copy(cached_typedef);
4836 ast_value_set_name(var, "<type(from_def)>");
4838 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4840 for (; morefields; --morefields) {
4841 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4842 tmp->expression.next = (ast_expression*)var;
4846 /* do not yet turn into a field - remember:
4847 * .void() foo; is a field too
4848 * .void()() foo; is a function
4852 if (!parser_next(parser)) {
4854 parseerror(parser, "parse error after typename");
4858 /* an opening paren now starts the parameter-list of a function
4859 * this is where original-QC has parameter lists.
4860 * We allow a single parameter list here.
4861 * Much like fteqcc we don't allow `float()() x`
4863 if (parser->tok == '(') {
4864 var = parse_parameter_list(parser, var);
4869 /* store the base if requested */
4871 *storebase = ast_value_copy(var);
4873 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4874 tmp->expression.next = (ast_expression*)*storebase;
4879 /* there may be a name now */
4880 if (parser->tok == TOKEN_IDENT || parser->tok == TOKEN_KEYWORD) {
4881 if (!strcmp(parser_tokval(parser), "break"))
4882 (void)!parsewarning(parser, WARN_BREAKDEF, "break definition ignored (suggest removing it)");
4883 else if (parser->tok == TOKEN_KEYWORD)
4886 name = util_strdup(parser_tokval(parser));
4889 if (!parser_next(parser)) {
4892 parseerror(parser, "error after variable or field declaration");
4898 /* now this may be an array */
4899 if (parser->tok == '[') {
4901 var = parse_arraysize(parser, var);
4903 if (name) mem_d(name);
4908 /* This is the point where we can turn it into a field */
4910 /* turn it into a field if desired */
4911 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4912 tmp->expression.next = (ast_expression*)var;
4916 /* now there may be function parens again */
4917 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4918 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4919 if (parser->tok == '(' && wasarray)
4920 parseerror(parser, "arrays as part of a return type is not supported");
4921 while (parser->tok == '(') {
4922 var = parse_parameter_list(parser, var);
4924 if (name) mem_d(name);
4929 /* finally name it */
4931 if (!ast_value_set_name(var, name)) {
4934 parseerror(parser, "internal error: failed to set name");
4937 /* free the name, ast_value_set_name duplicates */
4944 static bool parse_typedef(parser_t *parser)
4946 ast_value *typevar, *oldtype;
4947 ast_expression *old;
4949 typevar = parse_typename(parser, NULL, NULL, NULL);
4954 /* while parsing types, the ast_value's get named '<something>' */
4955 if (!typevar->name || typevar->name[0] == '<') {
4956 parseerror(parser, "missing name in typedef");
4957 ast_delete(typevar);
4961 if ( (old = parser_find_var(parser, typevar->name)) ) {
4962 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4963 " -> `%s` has been declared here: %s:%i",
4964 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4965 ast_delete(typevar);
4969 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4970 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4971 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4972 ast_delete(typevar);
4976 vec_push(parser->_typedefs, typevar);
4977 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4979 if (parser->tok != ';') {
4980 parseerror(parser, "expected semicolon after typedef");
4983 if (!parser_next(parser)) {
4984 parseerror(parser, "parse error after typedef");
4991 static const char *cvq_to_str(int cvq) {
4993 case CV_NONE: return "none";
4994 case CV_VAR: return "`var`";
4995 case CV_CONST: return "`const`";
4996 default: return "<INVALID>";
5000 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
5003 if (proto->cvq != var->cvq) {
5004 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
5005 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5006 parser->tok == '='))
5008 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
5009 "`%s` declared with different qualifiers: %s\n"
5010 " -> previous declaration here: %s:%i uses %s",
5011 var->name, cvq_to_str(var->cvq),
5012 ast_ctx(proto).file, ast_ctx(proto).line,
5013 cvq_to_str(proto->cvq));
5016 av = (var ->expression.flags & AST_FLAG_NORETURN);
5017 ao = (proto->expression.flags & AST_FLAG_NORETURN);
5019 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
5020 "`%s` declared with different attributes%s\n"
5021 " -> previous declaration here: %s:%i",
5022 var->name, (av ? ": noreturn" : ""),
5023 ast_ctx(proto).file, ast_ctx(proto).line,
5024 (ao ? ": noreturn" : ""));
5029 static bool create_array_accessors(parser_t *parser, ast_value *var)
5032 util_snprintf(name, sizeof(name), "%s##SET", var->name);
5033 if (!parser_create_array_setter(parser, var, name))
5035 util_snprintf(name, sizeof(name), "%s##GET", var->name);
5036 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5041 static bool parse_array(parser_t *parser, ast_value *array)
5044 if (array->initlist) {
5045 parseerror(parser, "array already initialized elsewhere");
5048 if (!parser_next(parser)) {
5049 parseerror(parser, "parse error in array initializer");
5053 while (parser->tok != '}') {
5054 ast_value *v = (ast_value*)parse_expression_leave(parser, true, false, false);
5057 if (!ast_istype(v, ast_value) || !v->hasvalue || v->cvq != CV_CONST) {
5059 parseerror(parser, "initializing element must be a compile time constant");
5062 vec_push(array->initlist, v->constval);
5063 if (v->expression.vtype == TYPE_STRING) {
5064 array->initlist[i].vstring = util_strdupe(array->initlist[i].vstring);
5068 if (parser->tok == '}')
5070 if (parser->tok != ',' || !parser_next(parser)) {
5071 parseerror(parser, "expected comma or '}' in element list");
5075 if (!parser_next(parser) || parser->tok != ';') {
5076 parseerror(parser, "expected semicolon after initializer, got %s");
5080 if (!parser_next(parser)) {
5081 parseerror(parser, "parse error after initializer");
5086 if (array->expression.flags & AST_FLAG_ARRAY_INIT) {
5087 if (array->expression.count != (size_t)-1) {
5088 parseerror(parser, "array `%s' has already been initialized with %u elements",
5089 array->name, (unsigned)array->expression.count);
5091 array->expression.count = vec_size(array->initlist);
5092 if (!create_array_accessors(parser, array))
5098 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)
5102 ast_expression *old;
5106 ast_value *basetype = NULL;
5108 bool isparam = false;
5109 bool isvector = false;
5110 bool cleanvar = true;
5111 bool wasarray = false;
5113 ast_member *me[3] = { NULL, NULL, NULL };
5114 ast_member *last_me[3] = { NULL, NULL, NULL };
5116 if (!localblock && is_static)
5117 parseerror(parser, "`static` qualifier is not supported in global scope");
5119 /* get the first complete variable */
5120 var = parse_typename(parser, &basetype, cached_typedef, NULL);
5123 ast_delete(basetype);
5127 /* while parsing types, the ast_value's get named '<something>' */
5128 if (!var->name || var->name[0] == '<') {
5129 parseerror(parser, "declaration does not declare anything");
5131 ast_delete(basetype);
5139 /* Part 0: finish the type */
5140 if (parser->tok == '(') {
5141 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5142 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5143 var = parse_parameter_list(parser, var);
5149 /* we only allow 1-dimensional arrays */
5150 if (parser->tok == '[') {
5152 var = parse_arraysize(parser, var);
5158 if (parser->tok == '(' && wasarray) {
5159 parseerror(parser, "arrays as part of a return type is not supported");
5160 /* we'll still parse the type completely for now */
5162 /* for functions returning functions */
5163 while (parser->tok == '(') {
5164 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5165 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5166 var = parse_parameter_list(parser, var);
5173 var->cvq = qualifier;
5174 if (qflags & AST_FLAG_COVERAGE) /* specified in QC, drop our default */
5175 var->expression.flags &= ~(AST_FLAG_COVERAGE_MASK);
5176 var->expression.flags |= qflags;
5179 * store the vstring back to var for alias and
5180 * deprecation messages.
5182 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5183 var->expression.flags & AST_FLAG_ALIAS)
5184 var->desc = vstring;
5186 if (parser_find_global(parser, var->name) && var->expression.flags & AST_FLAG_ALIAS) {
5187 parseerror(parser, "function aliases cannot be forward declared");
5194 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5195 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5196 * is then filled with the previous definition and the parameter-names replaced.
5198 if (!strcmp(var->name, "nil")) {
5199 if (OPTS_FLAG(UNTYPED_NIL)) {
5200 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5201 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5203 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5206 /* Deal with end_sys_ vars */
5208 if (!strcmp(var->name, "end_sys_globals")) {
5210 parser->crc_globals = vec_size(parser->globals);
5213 else if (!strcmp(var->name, "end_sys_fields")) {
5215 parser->crc_fields = vec_size(parser->fields);
5218 if (was_end && var->expression.vtype == TYPE_FIELD) {
5219 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5220 "global '%s' hint should not be a field",
5221 parser_tokval(parser)))
5228 if (!nofields && var->expression.vtype == TYPE_FIELD)
5230 /* deal with field declarations */
5231 old = parser_find_field(parser, var->name);
5233 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5234 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5243 parseerror(parser, "field `%s` already declared here: %s:%i",
5244 var->name, ast_ctx(old).file, ast_ctx(old).line);
5249 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5250 (old = parser_find_global(parser, var->name)))
5252 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5253 parseerror(parser, "field `%s` already declared here: %s:%i",
5254 var->name, ast_ctx(old).file, ast_ctx(old).line);
5261 /* deal with other globals */
5262 old = parser_find_global(parser, var->name);
5263 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5265 /* This is a function which had a prototype */
5266 if (!ast_istype(old, ast_value)) {
5267 parseerror(parser, "internal error: prototype is not an ast_value");
5271 proto = (ast_value*)old;
5272 proto->desc = var->desc;
5273 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5274 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5276 ast_ctx(proto).file, ast_ctx(proto).line);
5280 /* we need the new parameter-names */
5281 for (i = 0; i < vec_size(proto->expression.params); ++i)
5282 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5283 if (!parser_check_qualifiers(parser, var, proto)) {
5290 proto->expression.flags |= var->expression.flags;
5298 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5299 "global `%s` already declared here: %s:%i",
5300 var->name, ast_ctx(old).file, ast_ctx(old).line))
5305 if (old->flags & AST_FLAG_FINAL_DECL) {
5306 parseerror(parser, "cannot redeclare variable `%s`, declared final here: %s:%i",
5307 var->name, ast_ctx(old).file, ast_ctx(old).line);
5311 proto = (ast_value*)old;
5312 if (!ast_istype(old, ast_value)) {
5313 parseerror(parser, "internal error: not an ast_value");
5318 if (!parser_check_qualifiers(parser, var, proto)) {
5323 proto->expression.flags |= var->expression.flags;
5324 /* copy the context for finals,
5325 * so the error can show where it was actually made 'final'
5327 if (proto->expression.flags & AST_FLAG_FINAL_DECL)
5328 ast_ctx(old) = ast_ctx(var);
5332 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5333 (old = parser_find_field(parser, var->name)))
5335 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5336 parseerror(parser, "global `%s` already declared here: %s:%i",
5337 var->name, ast_ctx(old).file, ast_ctx(old).line);
5344 else /* it's not a global */
5346 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5347 if (old && !isparam) {
5348 parseerror(parser, "local `%s` already declared here: %s:%i",
5349 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5353 /* doing this here as the above is just for a single scope */
5354 old = parser_find_local(parser, var->name, 0, &isparam);
5355 if (old && isparam) {
5356 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5357 "local `%s` is shadowing a parameter", var->name))
5359 parseerror(parser, "local `%s` already declared here: %s:%i",
5360 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5364 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5366 if (ast_istype(old, ast_value))
5367 var = proto = (ast_value*)old;
5376 /* in a noref section we simply bump the usecount */
5377 if (noref || parser->noref)
5381 * Create the global/local, and deal with vector types.
5384 if (var->expression.vtype == TYPE_VECTOR)
5386 else if (var->expression.vtype == TYPE_FIELD &&
5387 var->expression.next->vtype == TYPE_VECTOR)
5391 if (!create_vector_members(var, me)) {
5398 /* deal with global variables, fields, functions */
5399 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5400 var->isfield = true;
5401 vec_push(parser->fields, (ast_expression*)var);
5402 util_htset(parser->htfields, var->name, var);
5404 for (i = 0; i < 3; ++i) {
5405 vec_push(parser->fields, (ast_expression*)me[i]);
5406 util_htset(parser->htfields, me[i]->name, me[i]);
5411 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5412 parser_addglobal(parser, var->name, (ast_expression*)var);
5414 for (i = 0; i < 3; ++i) {
5415 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5419 ast_expression *find = parser_find_global(parser, var->desc);
5422 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5426 if (!ast_compare_type((ast_expression*)var, find)) {
5430 ast_type_to_string(find, ty1, sizeof(ty1));
5431 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5433 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5439 util_htset(parser->aliases, var->name, find);
5441 /* generate aliases for vector components */
5445 util_asprintf(&buffer[0], "%s_x", var->desc);
5446 util_asprintf(&buffer[1], "%s_y", var->desc);
5447 util_asprintf(&buffer[2], "%s_z", var->desc);
5449 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5450 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5451 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5461 /* a static adds itself to be generated like any other global
5462 * but is added to the local namespace instead
5464 char *defname = NULL;
5465 size_t prefix_len, ln;
5468 ln = strlen(parser->function->name);
5469 vec_append(defname, ln, parser->function->name);
5471 vec_append(defname, 2, "::");
5472 /* remember the length up to here */
5473 prefix_len = vec_size(defname);
5475 /* Add it to the local scope */
5476 util_htset(vec_last(parser->variables), var->name, (void*)var);
5478 /* now rename the global */
5479 ln = strlen(var->name);
5480 vec_append(defname, ln, var->name);
5481 /* if a variable of that name already existed, add the
5483 * The counter is incremented either way.
5485 sn_size = vec_size(parser->function->static_names);
5486 for (sn = 0; sn != sn_size; ++sn) {
5487 if (strcmp(parser->function->static_names[sn], var->name) == 0)
5490 if (sn != sn_size) {
5492 int len = util_asprintf(&num, "#%u", parser->function->static_count);
5493 vec_append(defname, len, num);
5497 vec_push(parser->function->static_names, util_strdup(var->name));
5498 parser->function->static_count++;
5499 ast_value_set_name(var, defname);
5501 /* push it to the to-be-generated globals */
5502 vec_push(parser->globals, (ast_expression*)var);
5504 /* same game for the vector members */
5506 for (i = 0; i < 3; ++i) {
5507 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5509 vec_shrinkto(defname, prefix_len);
5510 ln = strlen(me[i]->name);
5511 vec_append(defname, ln, me[i]->name);
5512 ast_member_set_name(me[i], defname);
5514 vec_push(parser->globals, (ast_expression*)me[i]);
5519 vec_push(localblock->locals, var);
5520 parser_addlocal(parser, var->name, (ast_expression*)var);
5522 for (i = 0; i < 3; ++i) {
5523 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5524 ast_block_collect(localblock, (ast_expression*)me[i]);
5530 memcpy(last_me, me, sizeof(me));
5531 me[0] = me[1] = me[2] = NULL;
5536 if (var->expression.vtype == TYPE_ARRAY) {
5537 if (var->expression.count != (size_t)-1) {
5538 if (!create_array_accessors(parser, var))
5542 else if (!localblock && !nofields &&
5543 var->expression.vtype == TYPE_FIELD &&
5544 var->expression.next->vtype == TYPE_ARRAY)
5547 ast_expression *telem;
5549 ast_value *array = (ast_value*)var->expression.next;
5551 if (!ast_istype(var->expression.next, ast_value)) {
5552 parseerror(parser, "internal error: field element type must be an ast_value");
5556 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5557 if (!parser_create_array_field_setter(parser, array, name))
5560 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5561 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5562 tfield->expression.next = telem;
5563 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5564 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5572 if (parser->tok == ';') {
5573 ast_delete(basetype);
5574 if (!parser_next(parser)) {
5575 parseerror(parser, "error after variable declaration");
5581 if (parser->tok == ',')
5585 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5588 parseerror(parser, "missing comma or semicolon while parsing variables");
5592 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5593 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5594 "initializing expression turns variable `%s` into a constant in this standard",
5601 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5602 if (parser->tok != '=') {
5603 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5607 if (!parser_next(parser)) {
5608 parseerror(parser, "error parsing initializer");
5612 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5613 parseerror(parser, "expected '=' before function body in this standard");
5616 if (parser->tok == '#') {
5617 ast_function *func = NULL;
5618 ast_value *number = NULL;
5624 parseerror(parser, "cannot declare builtins within functions");
5627 if (var->expression.vtype != TYPE_FUNCTION) {
5628 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5631 if (!parser_next(parser)) {
5632 parseerror(parser, "expected builtin number");
5636 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5637 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5639 parseerror(parser, "builtin number expected");
5642 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5645 parseerror(parser, "builtin number must be a compile time constant");
5648 if (number->expression.vtype == TYPE_INTEGER)
5649 builtin_num = number->constval.vint;
5650 else if (number->expression.vtype == TYPE_FLOAT)
5651 builtin_num = number->constval.vfloat;
5654 parseerror(parser, "builtin number must be an integer constant");
5659 fractional = modff(builtin_num, &integral);
5660 if (builtin_num < 0 || fractional != 0) {
5661 parseerror(parser, "builtin number must be an integer greater than zero");
5665 /* we only want the integral part anyways */
5666 builtin_num = integral;
5667 } else if (parser->tok == TOKEN_INTCONST) {
5668 builtin_num = parser_token(parser)->constval.i;
5670 parseerror(parser, "builtin number must be a compile time constant");
5674 if (var->hasvalue) {
5675 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5676 "builtin `%s` has already been defined\n"
5677 " -> previous declaration here: %s:%i",
5678 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5682 func = ast_function_new(ast_ctx(var), var->name, var);
5684 parseerror(parser, "failed to allocate function for `%s`", var->name);
5687 vec_push(parser->functions, func);
5689 func->builtin = -builtin_num-1;
5692 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5693 ? (parser->tok != ',' && parser->tok != ';')
5694 : (!parser_next(parser)))
5696 parseerror(parser, "expected comma or semicolon");
5698 ast_function_delete(func);
5699 var->constval.vfunc = NULL;
5703 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
5706 /* Note that fteqcc and most others don't even *have*
5707 * local arrays, so this is not a high priority.
5709 parseerror(parser, "TODO: initializers for local arrays");
5713 var->hasvalue = true;
5714 if (!parse_array(parser, var))
5717 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
5720 parseerror(parser, "cannot declare functions within functions");
5725 ast_ctx(proto) = parser_ctx(parser);
5727 if (!parse_function_body(parser, var))
5729 ast_delete(basetype);
5730 for (i = 0; i < vec_size(parser->gotos); ++i)
5731 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5732 vec_free(parser->gotos);
5733 vec_free(parser->labels);
5736 ast_expression *cexp;
5738 bool folded_const = false;
5740 cexp = parse_expression_leave(parser, true, false, false);
5743 cval = ast_istype(cexp, ast_value) ? (ast_value*)cexp : NULL;
5745 /* deal with foldable constants: */
5747 var->cvq == CV_CONST && cval && cval->hasvalue && cval->cvq == CV_CONST && !cval->isfield)
5749 /* remove it from the current locals */
5751 for (i = 0; i < 3; ++i) {
5752 vec_pop(parser->_locals);
5753 vec_pop(localblock->collect);
5756 /* do sanity checking, this function really needs refactoring */
5757 if (vec_last(parser->_locals) != (ast_expression*)var)
5758 parseerror(parser, "internal error: unexpected change in local variable handling");
5760 vec_pop(parser->_locals);
5761 if (vec_last(localblock->locals) != var)
5762 parseerror(parser, "internal error: unexpected change in local variable handling (2)");
5764 vec_pop(localblock->locals);
5765 /* push it to the to-be-generated globals */
5766 vec_push(parser->globals, (ast_expression*)var);
5768 for (i = 0; i < 3; ++i)
5769 vec_push(parser->globals, (ast_expression*)last_me[i]);
5770 folded_const = true;
5773 if (folded_const || !localblock || is_static) {
5774 if (cval != parser->nil &&
5775 (!cval || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5778 parseerror(parser, "initializer is non constant");
5783 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5784 qualifier != CV_VAR)
5786 var->cvq = CV_CONST;
5788 if (cval == parser->nil)
5789 var->expression.flags |= AST_FLAG_INITIALIZED;
5792 var->hasvalue = true;
5793 if (cval->expression.vtype == TYPE_STRING)
5794 var->constval.vstring = parser_strdup(cval->constval.vstring);
5795 else if (cval->expression.vtype == TYPE_FIELD)
5796 var->constval.vfield = cval;
5798 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5804 shunt sy = { NULL, NULL, NULL, NULL };
5807 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5808 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5809 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5810 if (!parser_sy_apply_operator(parser, &sy))
5813 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5814 parseerror(parser, "internal error: leaked operands");
5815 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5823 /* a constant initialized to an inexact value should be marked inexact:
5824 * const float x = <inexact>; should propagate the inexact flag
5826 if (var->cvq == CV_CONST && var->expression.vtype == TYPE_FLOAT) {
5827 if (cval && cval->hasvalue && cval->cvq == CV_CONST)
5828 var->inexact = cval->inexact;
5833 if (parser->tok == ',') {
5834 if (!parser_next(parser)) {
5835 parseerror(parser, "expected another variable");
5839 if (parser->tok != TOKEN_IDENT) {
5840 parseerror(parser, "expected another variable");
5843 var = ast_value_copy(basetype);
5845 ast_value_set_name(var, parser_tokval(parser));
5846 if (!parser_next(parser)) {
5847 parseerror(parser, "error parsing variable declaration");
5853 if (parser->tok != ';') {
5854 parseerror(parser, "missing semicolon after variables");
5858 if (!parser_next(parser)) {
5859 parseerror(parser, "parse error after variable declaration");
5863 ast_delete(basetype);
5867 if (cleanvar && var)
5869 ast_delete(basetype);
5873 ast_delete(basetype);
5874 if (cleanvar && var)
5876 if (me[0]) ast_member_delete(me[0]);
5877 if (me[1]) ast_member_delete(me[1]);
5878 if (me[2]) ast_member_delete(me[2]);
5882 static bool parser_global_statement(parser_t *parser)
5886 bool is_static = false;
5887 uint32_t qflags = 0;
5888 ast_value *istype = NULL;
5889 char *vstring = NULL;
5891 if (parser->tok == TOKEN_IDENT)
5892 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5894 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.' || parser->tok == TOKEN_DOTS)
5896 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5898 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5900 if (cvq == CV_WRONG)
5902 return parse_variable(parser, NULL, false, cvq, NULL, noref, is_static, qflags, vstring);
5904 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5906 return parse_enum(parser);
5908 else if (parser->tok == TOKEN_KEYWORD)
5910 if (!strcmp(parser_tokval(parser), "typedef")) {
5911 if (!parser_next(parser)) {
5912 parseerror(parser, "expected type definition after 'typedef'");
5915 return parse_typedef(parser);
5917 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5920 else if (parser->tok == '#')
5922 return parse_pragma(parser);
5924 else if (parser->tok == '$')
5926 if (!parser_next(parser)) {
5927 parseerror(parser, "parse error");
5933 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
5939 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5941 return util_crc16(old, str, strlen(str));
5944 static void progdefs_crc_file(const char *str)
5946 /* write to progdefs.h here */
5950 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5952 old = progdefs_crc_sum(old, str);
5953 progdefs_crc_file(str);
5957 static void generate_checksum(parser_t *parser, ir_builder *ir)
5959 uint16_t crc = 0xFFFF;
5963 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5964 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5966 progdefs_crc_file("\tint\tpad;\n");
5967 progdefs_crc_file("\tint\tofs_return[3];\n");
5968 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5969 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5970 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5971 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5972 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5973 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5974 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5975 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5977 for (i = 0; i < parser->crc_globals; ++i) {
5978 if (!ast_istype(parser->globals[i], ast_value))
5980 value = (ast_value*)(parser->globals[i]);
5981 switch (value->expression.vtype) {
5982 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5983 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5984 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5985 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5987 crc = progdefs_crc_both(crc, "\tint\t");
5990 crc = progdefs_crc_both(crc, value->name);
5991 crc = progdefs_crc_both(crc, ";\n");
5993 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5994 for (i = 0; i < parser->crc_fields; ++i) {
5995 if (!ast_istype(parser->fields[i], ast_value))
5997 value = (ast_value*)(parser->fields[i]);
5998 switch (value->expression.next->vtype) {
5999 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6000 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6001 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6002 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6004 crc = progdefs_crc_both(crc, "\tint\t");
6007 crc = progdefs_crc_both(crc, value->name);
6008 crc = progdefs_crc_both(crc, ";\n");
6010 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
6011 ir->code->crc = crc;
6014 parser_t *parser_create()
6017 lex_ctx_t empty_ctx;
6020 parser = (parser_t*)mem_a(sizeof(parser_t));
6024 memset(parser, 0, sizeof(*parser));
6026 for (i = 0; i < operator_count; ++i) {
6027 if (operators[i].id == opid1('=')) {
6028 parser->assign_op = operators+i;
6032 if (!parser->assign_op) {
6033 con_err("internal error: initializing parser: failed to find assign operator\n");
6038 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
6039 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
6040 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
6041 vec_push(parser->_blocktypedefs, 0);
6043 parser->aliases = util_htnew(PARSER_HT_SIZE);
6045 empty_ctx.file = "<internal>";
6047 empty_ctx.column = 0;
6048 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
6049 parser->nil->cvq = CV_CONST;
6050 if (OPTS_FLAG(UNTYPED_NIL))
6051 util_htset(parser->htglobals, "nil", (void*)parser->nil);
6053 parser->max_param_count = 1;
6055 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
6056 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
6057 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
6059 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
6060 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
6061 parser->reserved_version->cvq = CV_CONST;
6062 parser->reserved_version->hasvalue = true;
6063 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
6064 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
6066 parser->reserved_version = NULL;
6069 parser->fold = fold_init (parser);
6070 parser->intrin = intrin_init(parser);
6074 static bool parser_compile(parser_t *parser)
6076 /* initial lexer/parser state */
6077 parser->lex->flags.noops = true;
6079 if (parser_next(parser))
6081 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
6083 if (!parser_global_statement(parser)) {
6084 if (parser->tok == TOKEN_EOF)
6085 parseerror(parser, "unexpected end of file");
6086 else if (compile_errors)
6087 parseerror(parser, "there have been errors, bailing out");
6088 lex_close(parser->lex);
6094 parseerror(parser, "parse error");
6095 lex_close(parser->lex);
6100 lex_close(parser->lex);
6103 return !compile_errors;
6106 bool parser_compile_file(parser_t *parser, const char *filename)
6108 parser->lex = lex_open(filename);
6110 con_err("failed to open file \"%s\"\n", filename);
6113 return parser_compile(parser);
6116 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
6118 parser->lex = lex_open_string(str, len, name);
6120 con_err("failed to create lexer for string \"%s\"\n", name);
6123 return parser_compile(parser);
6126 static void parser_remove_ast(parser_t *parser)
6129 if (parser->ast_cleaned)
6131 parser->ast_cleaned = true;
6132 for (i = 0; i < vec_size(parser->accessors); ++i) {
6133 ast_delete(parser->accessors[i]->constval.vfunc);
6134 parser->accessors[i]->constval.vfunc = NULL;
6135 ast_delete(parser->accessors[i]);
6137 for (i = 0; i < vec_size(parser->functions); ++i) {
6138 ast_delete(parser->functions[i]);
6140 for (i = 0; i < vec_size(parser->fields); ++i) {
6141 ast_delete(parser->fields[i]);
6143 for (i = 0; i < vec_size(parser->globals); ++i) {
6144 ast_delete(parser->globals[i]);
6146 vec_free(parser->accessors);
6147 vec_free(parser->functions);
6148 vec_free(parser->globals);
6149 vec_free(parser->fields);
6151 for (i = 0; i < vec_size(parser->variables); ++i)
6152 util_htdel(parser->variables[i]);
6153 vec_free(parser->variables);
6154 vec_free(parser->_blocklocals);
6155 vec_free(parser->_locals);
6157 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6158 ast_delete(parser->_typedefs[i]);
6159 vec_free(parser->_typedefs);
6160 for (i = 0; i < vec_size(parser->typedefs); ++i)
6161 util_htdel(parser->typedefs[i]);
6162 vec_free(parser->typedefs);
6163 vec_free(parser->_blocktypedefs);
6165 vec_free(parser->_block_ctx);
6167 vec_free(parser->labels);
6168 vec_free(parser->gotos);
6169 vec_free(parser->breaks);
6170 vec_free(parser->continues);
6172 ast_value_delete(parser->nil);
6174 ast_value_delete(parser->const_vec[0]);
6175 ast_value_delete(parser->const_vec[1]);
6176 ast_value_delete(parser->const_vec[2]);
6178 if (parser->reserved_version)
6179 ast_value_delete(parser->reserved_version);
6181 util_htdel(parser->aliases);
6182 fold_cleanup(parser->fold);
6183 intrin_cleanup(parser->intrin);
6186 void parser_cleanup(parser_t *parser)
6188 parser_remove_ast(parser);
6192 static bool parser_set_coverage_func(parser_t *parser, ir_builder *ir) {
6194 ast_expression *expr;
6198 if (!OPTS_OPTION_BOOL(OPTION_COVERAGE))
6202 for (i = 0; i != vec_size(parser->functions); ++i) {
6203 if (!strcmp(parser->functions[i]->name, "coverage")) {
6204 func = parser->functions[i];
6209 if (OPTS_OPTION_BOOL(OPTION_COVERAGE)) {
6210 con_out("coverage support requested but no coverage() builtin declared\n");
6211 ir_builder_delete(ir);
6218 expr = (ast_expression*)cov;
6220 if (expr->vtype != TYPE_FUNCTION || vec_size(expr->params) != 0) {
6222 ast_type_to_string(expr, ty, sizeof(ty));
6223 con_out("invalid type for coverage(): %s\n", ty);
6224 ir_builder_delete(ir);
6228 ir->coverage_func = func->ir_func->value;
6232 bool parser_finish(parser_t *parser, const char *output)
6238 if (compile_errors) {
6239 con_out("*** there were compile errors\n");
6243 ir = ir_builder_new("gmqcc_out");
6245 con_out("failed to allocate builder\n");
6249 for (i = 0; i < vec_size(parser->fields); ++i) {
6252 if (!ast_istype(parser->fields[i], ast_value))
6254 field = (ast_value*)parser->fields[i];
6255 hasvalue = field->hasvalue;
6256 field->hasvalue = false;
6257 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6258 con_out("failed to generate field %s\n", field->name);
6259 ir_builder_delete(ir);
6264 ast_expression *subtype;
6265 field->hasvalue = true;
6266 subtype = field->expression.next;
6267 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6268 if (subtype->vtype == TYPE_FIELD)
6269 ifld->fieldtype = subtype->next->vtype;
6270 else if (subtype->vtype == TYPE_FUNCTION)
6271 ifld->outtype = subtype->next->vtype;
6272 (void)!ir_value_set_field(field->ir_v, ifld);
6275 for (i = 0; i < vec_size(parser->globals); ++i) {
6277 if (!ast_istype(parser->globals[i], ast_value))
6279 asvalue = (ast_value*)(parser->globals[i]);
6280 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6281 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6282 "unused global: `%s`", asvalue->name);
6284 if (!ast_global_codegen(asvalue, ir, false)) {
6285 con_out("failed to generate global %s\n", asvalue->name);
6286 ir_builder_delete(ir);
6290 /* Build function vararg accessor ast tree now before generating
6291 * immediates, because the accessors may add new immediates
6293 for (i = 0; i < vec_size(parser->functions); ++i) {
6294 ast_function *f = parser->functions[i];
6296 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6297 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6298 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6299 con_out("failed to generate vararg setter for %s\n", f->name);
6300 ir_builder_delete(ir);
6303 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6304 con_out("failed to generate vararg getter for %s\n", f->name);
6305 ir_builder_delete(ir);
6309 ast_delete(f->varargs);
6314 /* Now we can generate immediates */
6315 if (!fold_generate(parser->fold, ir))
6318 /* before generating any functions we need to set the coverage_func */
6319 if (!parser_set_coverage_func(parser, ir))
6322 for (i = 0; i < vec_size(parser->globals); ++i) {
6324 if (!ast_istype(parser->globals[i], ast_value))
6326 asvalue = (ast_value*)(parser->globals[i]);
6327 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6329 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6330 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6331 "uninitialized constant: `%s`",
6333 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6334 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6335 "uninitialized global: `%s`",
6338 if (!ast_generate_accessors(asvalue, ir)) {
6339 ir_builder_delete(ir);
6343 for (i = 0; i < vec_size(parser->fields); ++i) {
6345 asvalue = (ast_value*)(parser->fields[i]->next);
6347 if (!ast_istype((ast_expression*)asvalue, ast_value))
6349 if (asvalue->expression.vtype != TYPE_ARRAY)
6351 if (!ast_generate_accessors(asvalue, ir)) {
6352 ir_builder_delete(ir);
6356 if (parser->reserved_version &&
6357 !ast_global_codegen(parser->reserved_version, ir, false))
6359 con_out("failed to generate reserved::version");
6360 ir_builder_delete(ir);
6363 for (i = 0; i < vec_size(parser->functions); ++i) {
6364 ast_function *f = parser->functions[i];
6365 if (!ast_function_codegen(f, ir)) {
6366 con_out("failed to generate function %s\n", f->name);
6367 ir_builder_delete(ir);
6372 generate_checksum(parser, ir);
6374 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6375 ir_builder_dump(ir, con_out);
6376 for (i = 0; i < vec_size(parser->functions); ++i) {
6377 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6378 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6379 ir_builder_delete(ir);
6383 parser_remove_ast(parser);
6385 if (compile_Werrors) {
6386 con_out("*** there were warnings treated as errors\n");
6387 compile_show_werrors();
6392 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6393 ir_builder_dump(ir, con_out);
6395 if (!ir_builder_generate(ir, output)) {
6396 con_out("*** failed to generate output file\n");
6397 ir_builder_delete(ir);
6401 ir_builder_delete(ir);