2 * Copyright (C) 2012, 2013
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);
49 static void parseerror(parser_t *parser, const char *fmt, ...)
53 vcompile_error(parser->lex->tok.ctx, fmt, ap);
57 /* returns true if it counts as an error */
58 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
63 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
68 /**********************************************************************
72 static bool parser_next(parser_t *parser)
74 /* lex_do kills the previous token */
75 parser->tok = lex_do(parser->lex);
76 if (parser->tok == TOKEN_EOF)
78 if (parser->tok >= TOKEN_ERROR) {
79 parseerror(parser, "lex error");
85 #define parser_tokval(p) ((p)->lex->tok.value)
86 #define parser_token(p) (&((p)->lex->tok))
88 char *parser_strdup(const char *str)
91 /* actually dup empty strings */
92 char *out = (char*)mem_a(1);
96 return util_strdup(str);
99 static ast_expression* parser_find_field(parser_t *parser, const char *name)
101 return ( ast_expression*)util_htget(parser->htfields, name);
104 static ast_expression* parser_find_label(parser_t *parser, const char *name)
107 for(i = 0; i < vec_size(parser->labels); i++)
108 if (!strcmp(parser->labels[i]->name, name))
109 return (ast_expression*)parser->labels[i];
113 ast_expression* parser_find_global(parser_t *parser, const char *name)
115 ast_expression *var = (ast_expression*)util_htget(parser->aliases, parser_tokval(parser));
118 return (ast_expression*)util_htget(parser->htglobals, name);
121 static ast_expression* parser_find_param(parser_t *parser, const char *name)
125 if (!parser->function)
127 fun = parser->function->vtype;
128 for (i = 0; i < vec_size(fun->expression.params); ++i) {
129 if (!strcmp(fun->expression.params[i]->name, name))
130 return (ast_expression*)(fun->expression.params[i]);
135 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
140 hash = util_hthash(parser->htglobals, name);
143 for (i = vec_size(parser->variables); i > upto;) {
145 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
149 return parser_find_param(parser, name);
152 static ast_expression* parser_find_var(parser_t *parser, const char *name)
156 v = parser_find_local(parser, name, 0, &dummy);
157 if (!v) v = parser_find_global(parser, name);
161 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
165 hash = util_hthash(parser->typedefs[0], name);
167 for (i = vec_size(parser->typedefs); i > upto;) {
169 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
177 size_t etype; /* 0 = expression, others are operators */
181 ast_block *block; /* for commas and function calls */
200 static sy_elem syexp(lex_ctx_t ctx, ast_expression *v) {
211 static sy_elem syblock(lex_ctx_t ctx, ast_block *v) {
215 e.out = (ast_expression*)v;
222 static sy_elem syop(lex_ctx_t ctx, const oper_info *op) {
224 e.etype = 1 + (op - operators);
233 static sy_elem syparen(lex_ctx_t ctx, size_t off) {
244 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
245 * so we need to rotate it to become ent.(foo[n]).
247 static bool rotate_entfield_array_index_nodes(ast_expression **out)
249 ast_array_index *index, *oldindex;
250 ast_entfield *entfield;
254 ast_expression *entity;
256 lex_ctx_t ctx = ast_ctx(*out);
258 if (!ast_istype(*out, ast_array_index))
260 index = (ast_array_index*)*out;
262 if (!ast_istype(index->array, ast_entfield))
264 entfield = (ast_entfield*)index->array;
266 if (!ast_istype(entfield->field, ast_value))
268 field = (ast_value*)entfield->field;
271 entity = entfield->entity;
275 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
276 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
277 *out = (ast_expression*)entfield;
279 oldindex->array = NULL;
280 oldindex->index = NULL;
281 ast_delete(oldindex);
286 static bool check_write_to(lex_ctx_t ctx, ast_expression *expr)
288 if (ast_istype(expr, ast_value)) {
289 ast_value *val = (ast_value*)expr;
290 if (val->cvq == CV_CONST) {
291 if (val->name[0] == '#') {
292 compile_error(ctx, "invalid assignment to a literal constant");
296 * To work around quakeworld we must elide the error and make it
299 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_QCC)
300 compile_error(ctx, "assignment to constant `%s`", val->name);
302 (void)!compile_warning(ctx, WARN_CONST_OVERWRITE, "assignment to constant `%s`", val->name);
309 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
313 ast_expression *out = NULL;
314 ast_expression *exprs[3];
315 ast_block *blocks[3];
316 ast_binstore *asbinstore;
317 size_t i, assignop, addop, subop;
318 qcint_t generated_op = 0;
323 if (!vec_size(sy->ops)) {
324 parseerror(parser, "internal error: missing operator");
328 if (vec_last(sy->ops).isparen) {
329 parseerror(parser, "unmatched parenthesis");
333 op = &operators[vec_last(sy->ops).etype - 1];
334 ctx = vec_last(sy->ops).ctx;
336 if (vec_size(sy->out) < op->operands) {
337 if (op->flags & OP_PREFIX)
338 compile_error(ctx, "expected expression after unary operator `%s`", op->op, (int)op->id);
339 else /* this should have errored previously already */
340 compile_error(ctx, "expected expression after operator `%s`", op->op, (int)op->id);
344 vec_shrinkby(sy->ops, 1);
346 /* op(:?) has no input and no output */
350 vec_shrinkby(sy->out, op->operands);
351 for (i = 0; i < op->operands; ++i) {
352 exprs[i] = sy->out[vec_size(sy->out)+i].out;
353 blocks[i] = sy->out[vec_size(sy->out)+i].block;
355 if (exprs[i]->vtype == TYPE_NOEXPR &&
356 !(i != 0 && op->id == opid2('?',':')) &&
357 !(i == 1 && op->id == opid1('.')))
359 if (ast_istype(exprs[i], ast_label))
360 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
362 compile_error(ast_ctx(exprs[i]), "not an expression");
363 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
367 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
368 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
372 #define NotSameType(T) \
373 (exprs[0]->vtype != exprs[1]->vtype || \
374 exprs[0]->vtype != T)
379 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
383 if (exprs[0]->vtype == TYPE_VECTOR &&
384 exprs[1]->vtype == TYPE_NOEXPR)
386 if (exprs[1] == (ast_expression*)parser->const_vec[0])
387 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
388 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
389 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
390 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
391 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
393 compile_error(ctx, "access to invalid vector component");
397 else if (exprs[0]->vtype == TYPE_ENTITY) {
398 if (exprs[1]->vtype != TYPE_FIELD) {
399 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
402 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
404 else if (exprs[0]->vtype == TYPE_VECTOR) {
405 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
409 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
415 if (exprs[0]->vtype != TYPE_ARRAY &&
416 !(exprs[0]->vtype == TYPE_FIELD &&
417 exprs[0]->next->vtype == TYPE_ARRAY))
419 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
420 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
423 if (exprs[1]->vtype != TYPE_FLOAT) {
424 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
425 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
428 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
429 if (rotate_entfield_array_index_nodes(&out))
432 /* This is not broken in fteqcc anymore */
433 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
434 /* this error doesn't need to make us bail out */
435 (void)!parsewarning(parser, WARN_EXTENSIONS,
436 "accessing array-field members of an entity without parenthesis\n"
437 " -> this is an extension from -std=gmqcc");
444 if (vec_size(sy->paren) && vec_last(sy->paren) == PAREN_FUNC) {
445 vec_push(sy->out, syexp(ctx, exprs[0]));
446 vec_push(sy->out, syexp(ctx, exprs[1]));
447 vec_last(sy->argc)++;
451 if (!ast_block_add_expr(blocks[0], exprs[1]))
454 blocks[0] = ast_block_new(ctx);
455 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
456 !ast_block_add_expr(blocks[0], exprs[1]))
461 ast_block_set_type(blocks[0], exprs[1]);
463 vec_push(sy->out, syblock(ctx, blocks[0]));
470 if ((out = fold_op(parser->fold, op, exprs)))
473 if (exprs[0]->vtype != TYPE_FLOAT &&
474 exprs[0]->vtype != TYPE_VECTOR) {
475 compile_error(ctx, "invalid types used in unary expression: cannot negate type %s",
476 type_name[exprs[0]->vtype]);
479 out = (ast_expression*)ast_unary_new(ctx, (VINSTR_NEG_F-TYPE_FLOAT) + exprs[0]->vtype, exprs[0]);
483 if (!(out = fold_op(parser->fold, op, exprs))) {
484 switch (exprs[0]->vtype) {
486 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
489 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
492 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
493 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
495 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
497 /* we don't constant-fold NOT for these types */
499 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
502 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
505 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
506 type_name[exprs[0]->vtype]);
513 if (exprs[0]->vtype != exprs[1]->vtype ||
514 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
516 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
517 type_name[exprs[0]->vtype],
518 type_name[exprs[1]->vtype]);
521 if (!(out = fold_op(parser->fold, op, exprs))) {
522 switch (exprs[0]->vtype) {
524 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
527 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
530 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
531 type_name[exprs[0]->vtype],
532 type_name[exprs[1]->vtype]);
538 if (exprs[0]->vtype != exprs[1]->vtype ||
539 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT))
541 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
542 type_name[exprs[1]->vtype],
543 type_name[exprs[0]->vtype]);
546 if (!(out = fold_op(parser->fold, op, exprs))) {
547 switch (exprs[0]->vtype) {
549 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
552 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
555 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
556 type_name[exprs[1]->vtype],
557 type_name[exprs[0]->vtype]);
563 if (exprs[0]->vtype != exprs[1]->vtype &&
564 !(exprs[0]->vtype == TYPE_VECTOR &&
565 exprs[1]->vtype == TYPE_FLOAT) &&
566 !(exprs[1]->vtype == TYPE_VECTOR &&
567 exprs[0]->vtype == TYPE_FLOAT)
570 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
571 type_name[exprs[1]->vtype],
572 type_name[exprs[0]->vtype]);
575 if (!(out = fold_op(parser->fold, op, exprs))) {
576 switch (exprs[0]->vtype) {
578 if (exprs[1]->vtype == TYPE_VECTOR)
579 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
581 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
584 if (exprs[1]->vtype == TYPE_FLOAT)
585 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
587 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
590 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
591 type_name[exprs[1]->vtype],
592 type_name[exprs[0]->vtype]);
599 if (exprs[1]->vtype != TYPE_FLOAT) {
600 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
601 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
602 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
605 if (!(out = fold_op(parser->fold, op, exprs))) {
606 if (exprs[0]->vtype == TYPE_FLOAT)
607 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
609 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
610 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
611 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
618 if (NotSameType(TYPE_FLOAT)) {
619 compile_error(ctx, "invalid types used in expression: cannot perform modulo operation between types %s and %s",
620 type_name[exprs[0]->vtype],
621 type_name[exprs[1]->vtype]);
623 } else if (!(out = fold_op(parser->fold, op, exprs))) {
624 /* generate a call to __builtin_mod */
625 ast_expression *mod = intrin_func(parser->intrin, "mod");
626 ast_call *call = NULL;
627 if (!mod) return false; /* can return null for missing floor */
629 call = ast_call_new(parser_ctx(parser), mod);
630 vec_push(call->params, exprs[0]);
631 vec_push(call->params, exprs[1]);
633 out = (ast_expression*)call;
638 compile_error(ctx, "%= is unimplemented");
644 if ( !(exprs[0]->vtype == TYPE_FLOAT && exprs[1]->vtype == TYPE_FLOAT) &&
645 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_FLOAT) &&
646 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_VECTOR))
648 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
649 type_name[exprs[0]->vtype],
650 type_name[exprs[1]->vtype]);
654 if (!(out = fold_op(parser->fold, op, exprs))) {
656 * IF the first expression is float, the following will be too
657 * since scalar ^ vector is not allowed.
659 if (exprs[0]->vtype == TYPE_FLOAT) {
660 out = (ast_expression*)ast_binary_new(ctx,
661 (op->id == opid1('^') ? VINSTR_BITXOR : op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
665 * The first is a vector: vector is allowed to bitop with vector and
666 * with scalar, branch here for the second operand.
668 if (exprs[1]->vtype == TYPE_VECTOR) {
670 * Bitop all the values of the vector components against the
671 * vectors components in question.
673 out = (ast_expression*)ast_binary_new(ctx,
674 (op->id == opid1('^') ? VINSTR_BITXOR_V : op->id == opid1('|') ? VINSTR_BITOR_V : VINSTR_BITAND_V),
677 out = (ast_expression*)ast_binary_new(ctx,
678 (op->id == opid1('^') ? VINSTR_BITXOR_VF : op->id == opid1('|') ? VINSTR_BITOR_VF : VINSTR_BITAND_VF),
687 case opid3('<','<','='):
688 case opid3('>','>','='):
689 if(!(out = fold_op(parser->fold, op, exprs))) {
690 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
696 generated_op += 1; /* INSTR_OR */
698 generated_op += INSTR_AND;
699 if (!(out = fold_op(parser->fold, op, exprs))) {
700 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
701 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
702 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
703 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
706 for (i = 0; i < 2; ++i) {
707 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->vtype == TYPE_VECTOR) {
708 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
710 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
712 exprs[i] = out; out = NULL;
713 if (OPTS_FLAG(PERL_LOGIC)) {
714 /* here we want to keep the right expressions' type */
718 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->vtype == TYPE_STRING) {
719 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
721 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
723 exprs[i] = out; out = NULL;
724 if (OPTS_FLAG(PERL_LOGIC)) {
725 /* here we want to keep the right expressions' type */
730 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
735 if (vec_last(sy->paren) != PAREN_TERNARY2) {
736 compile_error(ctx, "mismatched parenthesis/ternary");
740 if (!ast_compare_type(exprs[1], exprs[2])) {
741 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
742 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
743 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
746 if (!(out = fold_op(parser->fold, op, exprs)))
747 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
750 case opid2('*', '*'):
751 if (NotSameType(TYPE_FLOAT)) {
752 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
753 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
754 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
759 if (!(out = fold_op(parser->fold, op, exprs))) {
760 ast_call *gencall = ast_call_new(parser_ctx(parser), intrin_func(parser->intrin, "pow"));
761 vec_push(gencall->params, exprs[0]);
762 vec_push(gencall->params, exprs[1]);
763 out = (ast_expression*)gencall;
767 case opid2('>', '<'):
768 if (NotSameType(TYPE_VECTOR)) {
769 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
770 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
771 compile_error(ctx, "invalid types used in cross product: %s and %s",
776 if (!(out = fold_op(parser->fold, op, exprs))) {
777 out = (ast_expression*)ast_binary_new(
787 case opid3('<','=','>'): /* -1, 0, or 1 */
788 if (NotSameType(TYPE_FLOAT)) {
789 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
790 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
791 compile_error(ctx, "invalid types used in comparision: %s and %s",
797 if (!(out = fold_op(parser->fold, op, exprs))) {
798 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
800 eq->refs = AST_REF_NONE;
803 out = (ast_expression*)ast_ternary_new(ctx,
804 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
806 (ast_expression*)parser->fold->imm_float[2],
809 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
811 (ast_expression*)parser->fold->imm_float[0],
814 (ast_expression*)parser->fold->imm_float[1]
824 generated_op += 1; /* INSTR_GT */
826 generated_op += 1; /* INSTR_LT */
827 case opid2('>', '='):
828 generated_op += 1; /* INSTR_GE */
829 case opid2('<', '='):
830 generated_op += INSTR_LE;
831 if (NotSameType(TYPE_FLOAT)) {
832 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
833 type_name[exprs[0]->vtype],
834 type_name[exprs[1]->vtype]);
837 if (!(out = fold_op(parser->fold, op, exprs)))
838 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
840 case opid2('!', '='):
841 if (exprs[0]->vtype != exprs[1]->vtype) {
842 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
843 type_name[exprs[0]->vtype],
844 type_name[exprs[1]->vtype]);
847 if (!(out = fold_op(parser->fold, op, exprs)))
848 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->vtype], exprs[0], exprs[1]);
850 case opid2('=', '='):
851 if (exprs[0]->vtype != exprs[1]->vtype) {
852 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
853 type_name[exprs[0]->vtype],
854 type_name[exprs[1]->vtype]);
857 if (!(out = fold_op(parser->fold, op, exprs)))
858 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->vtype], exprs[0], exprs[1]);
862 if (ast_istype(exprs[0], ast_entfield)) {
863 ast_expression *field = ((ast_entfield*)exprs[0])->field;
864 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
865 exprs[0]->vtype == TYPE_FIELD &&
866 exprs[0]->next->vtype == TYPE_VECTOR)
868 assignop = type_storep_instr[TYPE_VECTOR];
871 assignop = type_storep_instr[exprs[0]->vtype];
872 if (assignop == VINSTR_END || !ast_compare_type(field->next, exprs[1]))
874 ast_type_to_string(field->next, ty1, sizeof(ty1));
875 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
876 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
877 field->next->vtype == TYPE_FUNCTION &&
878 exprs[1]->vtype == TYPE_FUNCTION)
880 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
881 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
884 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
889 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
890 exprs[0]->vtype == TYPE_FIELD &&
891 exprs[0]->next->vtype == TYPE_VECTOR)
893 assignop = type_store_instr[TYPE_VECTOR];
896 assignop = type_store_instr[exprs[0]->vtype];
899 if (assignop == VINSTR_END) {
900 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
901 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
902 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
904 else if (!ast_compare_type(exprs[0], exprs[1]))
906 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
907 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
908 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
909 exprs[0]->vtype == TYPE_FUNCTION &&
910 exprs[1]->vtype == TYPE_FUNCTION)
912 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
913 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
916 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
919 (void)check_write_to(ctx, exprs[0]);
920 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
922 case opid3('+','+','P'):
923 case opid3('-','-','P'):
925 if (exprs[0]->vtype != TYPE_FLOAT) {
926 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
927 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
930 if (op->id == opid3('+','+','P'))
934 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
935 if (ast_istype(exprs[0], ast_entfield)) {
936 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
938 (ast_expression*)parser->fold->imm_float[1]);
940 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
942 (ast_expression*)parser->fold->imm_float[1]);
945 case opid3('S','+','+'):
946 case opid3('S','-','-'):
948 if (exprs[0]->vtype != TYPE_FLOAT) {
949 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
950 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
953 if (op->id == opid3('S','+','+')) {
960 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
961 if (ast_istype(exprs[0], ast_entfield)) {
962 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
964 (ast_expression*)parser->fold->imm_float[1]);
966 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
968 (ast_expression*)parser->fold->imm_float[1]);
972 out = (ast_expression*)ast_binary_new(ctx, subop,
974 (ast_expression*)parser->fold->imm_float[1]);
979 if (exprs[0]->vtype != exprs[1]->vtype ||
980 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
982 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
983 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
984 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
988 (void)check_write_to(ctx, exprs[0]);
989 if (ast_istype(exprs[0], ast_entfield))
990 assignop = type_storep_instr[exprs[0]->vtype];
992 assignop = type_store_instr[exprs[0]->vtype];
993 switch (exprs[0]->vtype) {
995 out = (ast_expression*)ast_binstore_new(ctx, assignop,
996 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1000 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1001 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1002 exprs[0], exprs[1]);
1005 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1006 type_name[exprs[0]->vtype],
1007 type_name[exprs[1]->vtype]);
1011 case opid2('*','='):
1012 case opid2('/','='):
1013 if (exprs[1]->vtype != TYPE_FLOAT ||
1014 !(exprs[0]->vtype == TYPE_FLOAT ||
1015 exprs[0]->vtype == TYPE_VECTOR))
1017 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1018 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1019 compile_error(ctx, "invalid types used in expression: %s and %s",
1023 (void)check_write_to(ctx, exprs[0]);
1024 if (ast_istype(exprs[0], ast_entfield))
1025 assignop = type_storep_instr[exprs[0]->vtype];
1027 assignop = type_store_instr[exprs[0]->vtype];
1028 switch (exprs[0]->vtype) {
1030 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1031 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1032 exprs[0], exprs[1]);
1035 if (op->id == opid2('*','=')) {
1036 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1037 exprs[0], exprs[1]);
1039 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1040 (ast_expression*)parser->fold->imm_float[1],
1043 compile_error(ctx, "internal error: failed to generate division");
1046 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1051 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1052 type_name[exprs[0]->vtype],
1053 type_name[exprs[1]->vtype]);
1057 case opid2('&','='):
1058 case opid2('|','='):
1059 case opid2('^','='):
1060 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1061 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1062 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1063 compile_error(ctx, "invalid types used in expression: %s and %s",
1067 (void)check_write_to(ctx, exprs[0]);
1068 if (ast_istype(exprs[0], ast_entfield))
1069 assignop = type_storep_instr[exprs[0]->vtype];
1071 assignop = type_store_instr[exprs[0]->vtype];
1072 if (exprs[0]->vtype == TYPE_FLOAT)
1073 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1074 (op->id == opid2('^','=') ? VINSTR_BITXOR : op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1075 exprs[0], exprs[1]);
1077 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1078 (op->id == opid2('^','=') ? VINSTR_BITXOR_V : op->id == opid2('&','=') ? VINSTR_BITAND_V : VINSTR_BITOR_V),
1079 exprs[0], exprs[1]);
1081 case opid3('&','~','='):
1082 /* This is like: a &= ~(b);
1083 * But QC has no bitwise-not, so we implement it as
1086 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1087 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1088 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1089 compile_error(ctx, "invalid types used in expression: %s and %s",
1093 if (ast_istype(exprs[0], ast_entfield))
1094 assignop = type_storep_instr[exprs[0]->vtype];
1096 assignop = type_store_instr[exprs[0]->vtype];
1097 if (exprs[0]->vtype == TYPE_FLOAT)
1098 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1100 out = (ast_expression*)ast_binary_new(ctx, VINSTR_BITAND_V, exprs[0], exprs[1]);
1103 (void)check_write_to(ctx, exprs[0]);
1104 if (exprs[0]->vtype == TYPE_FLOAT)
1105 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1107 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_V, exprs[0], out);
1108 asbinstore->keep_dest = true;
1109 out = (ast_expression*)asbinstore;
1112 case opid2('~', 'P'):
1113 if (exprs[0]->vtype != TYPE_FLOAT && exprs[0]->vtype != TYPE_VECTOR) {
1114 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1115 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1118 if (!(out = fold_op(parser->fold, op, exprs))) {
1119 if (exprs[0]->vtype == TYPE_FLOAT) {
1120 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, (ast_expression*)parser->fold->imm_float[2], exprs[0]);
1122 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, (ast_expression*)parser->fold->imm_vector[1], exprs[0]);
1129 compile_error(ctx, "failed to apply operator %s", op->op);
1133 vec_push(sy->out, syexp(ctx, out));
1137 static bool parser_close_call(parser_t *parser, shunt *sy)
1139 /* was a function call */
1140 ast_expression *fun;
1141 ast_value *funval = NULL;
1145 size_t paramcount, i;
1148 fid = vec_last(sy->ops).off;
1149 vec_shrinkby(sy->ops, 1);
1151 /* out[fid] is the function
1152 * everything above is parameters...
1154 if (!vec_size(sy->argc)) {
1155 parseerror(parser, "internal error: no argument counter available");
1159 paramcount = vec_last(sy->argc);
1162 if (vec_size(sy->out) < fid) {
1163 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1164 (unsigned long)vec_size(sy->out),
1166 (unsigned long)paramcount);
1171 * TODO handle this at the intrinsic level with an ast_intrinsic
1174 if ((fun = sy->out[fid].out) == intrin_debug_typestring(parser->intrin)) {
1176 if (fid+2 != vec_size(sy->out) ||
1177 vec_last(sy->out).block)
1179 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1182 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1183 ast_unref(vec_last(sy->out).out);
1184 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1185 (ast_expression*)fold_constgen_string(parser->fold, ty, false));
1186 vec_shrinkby(sy->out, 1);
1191 * Now we need to determine if the function that is being called is
1192 * an intrinsic so we can evaluate if the arguments to it are constant
1193 * and than fruitfully fold them.
1195 #define fold_can_1(X) \
1196 (ast_istype(((ast_expression*)(X)), ast_value) && (X)->hasvalue && ((X)->cvq == CV_CONST) && \
1197 ((ast_expression*)(X))->vtype != TYPE_FUNCTION)
1199 if (fid + 1 < vec_size(sy->out))
1202 for (i = 0; i < paramcount; ++i) {
1203 if (!fold_can_1((ast_value*)sy->out[fid + 1 + i].out)) {
1210 * All is well which ends well, if we make it into here we can ignore the
1211 * intrinsic call and just evaluate it i.e constant fold it.
1213 if (fold && ast_istype(fun, ast_value) && ((ast_value*)fun)->intrinsic) {
1214 ast_expression **exprs = NULL;
1215 ast_expression *foldval = NULL;
1217 for (i = 0; i < paramcount; i++)
1218 vec_push(exprs, sy->out[fid+1 + i].out);
1220 if (!(foldval = intrin_fold(parser->intrin, (ast_value*)fun, exprs))) {
1226 * Blub: what sorts of unreffing and resizing of
1227 * sy->out should I be doing here?
1229 sy->out[fid] = syexp(foldval->node.context, foldval);
1230 vec_shrinkby(sy->out, paramcount);
1237 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1242 if (fid+1 + paramcount != vec_size(sy->out)) {
1243 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1244 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1248 for (i = 0; i < paramcount; ++i)
1249 vec_push(call->params, sy->out[fid+1 + i].out);
1250 vec_shrinkby(sy->out, paramcount);
1251 (void)!ast_call_check_types(call, parser->function->vtype->expression.varparam);
1252 if (parser->max_param_count < paramcount)
1253 parser->max_param_count = paramcount;
1255 if (ast_istype(fun, ast_value)) {
1256 funval = (ast_value*)fun;
1257 if ((fun->flags & AST_FLAG_VARIADIC) &&
1258 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1260 call->va_count = (ast_expression*)fold_constgen_float(parser->fold, (qcfloat_t)paramcount);
1264 /* overwrite fid, the function, with a call */
1265 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1267 if (fun->vtype != TYPE_FUNCTION) {
1268 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1273 parseerror(parser, "could not determine function return type");
1276 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1278 if (fun->flags & AST_FLAG_DEPRECATED) {
1280 return !parsewarning(parser, WARN_DEPRECATED,
1281 "call to function (which is marked deprecated)\n",
1282 "-> it has been declared here: %s:%i",
1283 ast_ctx(fun).file, ast_ctx(fun).line);
1286 return !parsewarning(parser, WARN_DEPRECATED,
1287 "call to `%s` (which is marked deprecated)\n"
1288 "-> `%s` declared here: %s:%i",
1289 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1291 return !parsewarning(parser, WARN_DEPRECATED,
1292 "call to `%s` (deprecated: %s)\n"
1293 "-> `%s` declared here: %s:%i",
1294 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1298 if (vec_size(fun->params) != paramcount &&
1299 !((fun->flags & AST_FLAG_VARIADIC) &&
1300 vec_size(fun->params) < paramcount))
1302 const char *fewmany = (vec_size(fun->params) > paramcount) ? "few" : "many";
1304 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1305 "too %s parameters for call to %s: expected %i, got %i\n"
1306 " -> `%s` has been declared here: %s:%i",
1307 fewmany, fval->name, (int)vec_size(fun->params), (int)paramcount,
1308 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1310 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1311 "too %s parameters for function call: expected %i, got %i\n"
1312 " -> it has been declared here: %s:%i",
1313 fewmany, (int)vec_size(fun->params), (int)paramcount,
1314 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1321 static bool parser_close_paren(parser_t *parser, shunt *sy)
1323 if (!vec_size(sy->ops)) {
1324 parseerror(parser, "unmatched closing paren");
1328 while (vec_size(sy->ops)) {
1329 if (vec_last(sy->ops).isparen) {
1330 if (vec_last(sy->paren) == PAREN_FUNC) {
1332 if (!parser_close_call(parser, sy))
1336 if (vec_last(sy->paren) == PAREN_EXPR) {
1338 if (!vec_size(sy->out)) {
1339 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1340 vec_shrinkby(sy->ops, 1);
1343 vec_shrinkby(sy->ops, 1);
1346 if (vec_last(sy->paren) == PAREN_INDEX) {
1348 /* pop off the parenthesis */
1349 vec_shrinkby(sy->ops, 1);
1350 /* then apply the index operator */
1351 if (!parser_sy_apply_operator(parser, sy))
1355 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1356 vec_last(sy->paren) = PAREN_TERNARY2;
1357 /* pop off the parenthesis */
1358 vec_shrinkby(sy->ops, 1);
1361 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1364 if (!parser_sy_apply_operator(parser, sy))
1370 static void parser_reclassify_token(parser_t *parser)
1373 if (parser->tok >= TOKEN_START)
1375 for (i = 0; i < operator_count; ++i) {
1376 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1377 parser->tok = TOKEN_OPERATOR;
1383 static ast_expression* parse_vararg_do(parser_t *parser)
1385 ast_expression *idx, *out;
1387 ast_value *funtype = parser->function->vtype;
1388 lex_ctx_t ctx = parser_ctx(parser);
1390 if (!parser->function->varargs) {
1391 parseerror(parser, "function has no variable argument list");
1395 if (!parser_next(parser) || parser->tok != '(') {
1396 parseerror(parser, "expected parameter index and type in parenthesis");
1399 if (!parser_next(parser)) {
1400 parseerror(parser, "error parsing parameter index");
1404 idx = parse_expression_leave(parser, true, false, false);
1408 if (parser->tok != ',') {
1409 if (parser->tok != ')') {
1411 parseerror(parser, "expected comma after parameter index");
1414 /* vararg piping: ...(start) */
1415 out = (ast_expression*)ast_argpipe_new(ctx, idx);
1419 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1421 parseerror(parser, "expected typename for vararg");
1425 typevar = parse_typename(parser, NULL, NULL);
1431 if (parser->tok != ')') {
1433 ast_delete(typevar);
1434 parseerror(parser, "expected closing paren");
1438 if (funtype->expression.varparam &&
1439 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1443 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1444 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1445 compile_error(ast_ctx(typevar),
1446 "function was declared to take varargs of type `%s`, requested type is: %s",
1450 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1451 ast_type_adopt(out, typevar);
1452 ast_delete(typevar);
1456 static ast_expression* parse_vararg(parser_t *parser)
1458 bool old_noops = parser->lex->flags.noops;
1460 ast_expression *out;
1462 parser->lex->flags.noops = true;
1463 out = parse_vararg_do(parser);
1465 parser->lex->flags.noops = old_noops;
1469 /* not to be exposed */
1470 bool ftepp_predef_exists(const char *name);
1471 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1473 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1474 parser->tok == TOKEN_IDENT &&
1475 !strcmp(parser_tokval(parser), "_"))
1477 /* a translatable string */
1480 parser->lex->flags.noops = true;
1481 if (!parser_next(parser) || parser->tok != '(') {
1482 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1485 parser->lex->flags.noops = false;
1486 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1487 parseerror(parser, "expected a constant string in translatable-string extension");
1490 val = (ast_value*)fold_constgen_string(parser->fold, parser_tokval(parser), true);
1493 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1495 if (!parser_next(parser) || parser->tok != ')') {
1496 parseerror(parser, "expected closing paren after translatable string");
1501 else if (parser->tok == TOKEN_DOTS)
1504 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1505 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1508 va = parse_vararg(parser);
1511 vec_push(sy->out, syexp(parser_ctx(parser), va));
1514 else if (parser->tok == TOKEN_FLOATCONST) {
1515 ast_expression *val = fold_constgen_float(parser->fold, (parser_token(parser)->constval.f));
1518 vec_push(sy->out, syexp(parser_ctx(parser), val));
1521 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1522 ast_expression *val = fold_constgen_float(parser->fold, (qcfloat_t)(parser_token(parser)->constval.i));
1525 vec_push(sy->out, syexp(parser_ctx(parser), val));
1528 else if (parser->tok == TOKEN_STRINGCONST) {
1529 ast_expression *val = fold_constgen_string(parser->fold, parser_tokval(parser), false);
1532 vec_push(sy->out, syexp(parser_ctx(parser), val));
1535 else if (parser->tok == TOKEN_VECTORCONST) {
1536 ast_expression *val = fold_constgen_vector(parser->fold, parser_token(parser)->constval.v);
1539 vec_push(sy->out, syexp(parser_ctx(parser), val));
1542 else if (parser->tok == TOKEN_IDENT)
1544 const char *ctoken = parser_tokval(parser);
1545 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1546 ast_expression *var;
1547 /* a_vector.{x,y,z} */
1548 if (!vec_size(sy->ops) ||
1549 !vec_last(sy->ops).etype ||
1550 operators[vec_last(sy->ops).etype-1].id != opid1('.'))
1552 /* When adding more intrinsics, fix the above condition */
1555 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1557 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1559 var = parser_find_var(parser, parser_tokval(parser));
1561 var = parser_find_field(parser, parser_tokval(parser));
1563 if (!var && with_labels) {
1564 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1566 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1567 var = (ast_expression*)lbl;
1568 vec_push(parser->labels, lbl);
1571 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
1572 var = (ast_expression*)fold_constgen_string(parser->fold, parser->function->name, false);
1575 * now we try for the real intrinsic hashtable. If the string
1576 * begins with __builtin, we simply skip past it, otherwise we
1577 * use the identifier as is.
1579 if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
1580 var = intrin_func(parser->intrin, parser_tokval(parser));
1584 char *correct = NULL;
1588 * sometimes people use preprocessing predefs without enabling them
1589 * i've done this thousands of times already myself. Lets check for
1590 * it in the predef table. And diagnose it better :)
1592 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
1593 parseerror(parser, "unexpected identifier: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1598 * TODO: determine the best score for the identifier: be it
1599 * a variable, a field.
1601 * We should also consider adding correction tables for
1602 * other things as well.
1604 if (OPTS_OPTION_BOOL(OPTION_CORRECTION) && strlen(parser_tokval(parser)) <= 16) {
1606 correct_init(&corr);
1608 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1609 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1610 if (strcmp(correct, parser_tokval(parser))) {
1617 correct_free(&corr);
1620 parseerror(parser, "unexpected identifier: %s (did you mean %s?)", parser_tokval(parser), correct);
1625 parseerror(parser, "unexpected identifier: %s", parser_tokval(parser));
1631 if (ast_istype(var, ast_value)) {
1632 ((ast_value*)var)->uses++;
1634 else if (ast_istype(var, ast_member)) {
1635 ast_member *mem = (ast_member*)var;
1636 if (ast_istype(mem->owner, ast_value))
1637 ((ast_value*)(mem->owner))->uses++;
1640 vec_push(sy->out, syexp(parser_ctx(parser), var));
1643 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1647 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1649 ast_expression *expr = NULL;
1652 bool wantop = false;
1653 /* only warn once about an assignment in a truth value because the current code
1654 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1656 bool warn_parenthesis = true;
1658 /* count the parens because an if starts with one, so the
1659 * end of a condition is an unmatched closing paren
1663 memset(&sy, 0, sizeof(sy));
1665 parser->lex->flags.noops = false;
1667 parser_reclassify_token(parser);
1671 if (parser->tok == TOKEN_TYPENAME) {
1672 parseerror(parser, "unexpected typename `%s`", parser_tokval(parser));
1676 if (parser->tok == TOKEN_OPERATOR)
1678 /* classify the operator */
1679 const oper_info *op;
1680 const oper_info *olast = NULL;
1682 for (o = 0; o < operator_count; ++o) {
1683 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1684 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1685 !strcmp(parser_tokval(parser), operators[o].op))
1690 if (o == operator_count) {
1691 compile_error(parser_ctx(parser), "unexpected operator: %s", parser_tokval(parser));
1694 /* found an operator */
1697 /* when declaring variables, a comma starts a new variable */
1698 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
1699 /* fixup the token */
1704 /* a colon without a pervious question mark cannot be a ternary */
1705 if (!ternaries && op->id == opid2(':','?')) {
1710 if (op->id == opid1(',')) {
1711 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1712 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1716 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1717 olast = &operators[vec_last(sy.ops).etype-1];
1719 /* first only apply higher precedences, assoc_left+equal comes after we warn about precedence rules */
1720 while (olast && op->prec < olast->prec)
1722 if (!parser_sy_apply_operator(parser, &sy))
1724 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1725 olast = &operators[vec_last(sy.ops).etype-1];
1730 #define IsAssignOp(x) (\
1731 (x) == opid1('=') || \
1732 (x) == opid2('+','=') || \
1733 (x) == opid2('-','=') || \
1734 (x) == opid2('*','=') || \
1735 (x) == opid2('/','=') || \
1736 (x) == opid2('%','=') || \
1737 (x) == opid2('&','=') || \
1738 (x) == opid2('|','=') || \
1739 (x) == opid3('&','~','=') \
1741 if (warn_parenthesis) {
1742 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1743 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1744 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
1747 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1748 warn_parenthesis = false;
1751 if (olast && olast->id != op->id) {
1752 if ((op->id == opid1('&') || op->id == opid1('|') || op->id == opid1('^')) &&
1753 (olast->id == opid1('&') || olast->id == opid1('|') || olast->id == opid1('^')))
1755 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around bitwise operations");
1756 warn_parenthesis = false;
1758 else if ((op->id == opid2('&','&') || op->id == opid2('|','|')) &&
1759 (olast->id == opid2('&','&') || olast->id == opid2('|','|')))
1761 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around logical operations");
1762 warn_parenthesis = false;
1768 (op->prec < olast->prec) ||
1769 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1771 if (!parser_sy_apply_operator(parser, &sy))
1773 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1774 olast = &operators[vec_last(sy.ops).etype-1];
1779 if (op->id == opid1('(')) {
1781 size_t sycount = vec_size(sy.out);
1782 /* we expected an operator, this is the function-call operator */
1783 vec_push(sy.paren, PAREN_FUNC);
1784 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
1785 vec_push(sy.argc, 0);
1787 vec_push(sy.paren, PAREN_EXPR);
1788 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1791 } else if (op->id == opid1('[')) {
1793 parseerror(parser, "unexpected array subscript");
1796 vec_push(sy.paren, PAREN_INDEX);
1797 /* push both the operator and the paren, this makes life easier */
1798 vec_push(sy.ops, syop(parser_ctx(parser), op));
1799 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1801 } else if (op->id == opid2('?',':')) {
1802 vec_push(sy.ops, syop(parser_ctx(parser), op));
1803 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1806 vec_push(sy.paren, PAREN_TERNARY1);
1807 } else if (op->id == opid2(':','?')) {
1808 if (!vec_size(sy.paren)) {
1809 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1812 if (vec_last(sy.paren) != PAREN_TERNARY1) {
1813 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1816 if (!parser_close_paren(parser, &sy))
1818 vec_push(sy.ops, syop(parser_ctx(parser), op));
1822 vec_push(sy.ops, syop(parser_ctx(parser), op));
1823 wantop = !!(op->flags & OP_SUFFIX);
1826 else if (parser->tok == ')') {
1827 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1828 if (!parser_sy_apply_operator(parser, &sy))
1831 if (!vec_size(sy.paren))
1834 if (vec_last(sy.paren) == PAREN_TERNARY1) {
1835 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
1838 if (!parser_close_paren(parser, &sy))
1841 /* must be a function call without parameters */
1842 if (vec_last(sy.paren) != PAREN_FUNC) {
1843 parseerror(parser, "closing paren in invalid position");
1846 if (!parser_close_paren(parser, &sy))
1851 else if (parser->tok == '(') {
1852 parseerror(parser, "internal error: '(' should be classified as operator");
1855 else if (parser->tok == '[') {
1856 parseerror(parser, "internal error: '[' should be classified as operator");
1859 else if (parser->tok == ']') {
1860 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1861 if (!parser_sy_apply_operator(parser, &sy))
1864 if (!vec_size(sy.paren))
1866 if (vec_last(sy.paren) != PAREN_INDEX) {
1867 parseerror(parser, "mismatched parentheses, unexpected ']'");
1870 if (!parser_close_paren(parser, &sy))
1875 if (!parse_sya_operand(parser, &sy, with_labels))
1878 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
1879 vec_last(sy.argc)++;
1884 /* in this case we might want to allow constant string concatenation */
1885 bool concatenated = false;
1886 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
1887 ast_expression *lexpr = vec_last(sy.out).out;
1888 if (ast_istype(lexpr, ast_value)) {
1889 ast_value *last = (ast_value*)lexpr;
1890 if (last->isimm == true && last->cvq == CV_CONST &&
1891 last->hasvalue && last->expression.vtype == TYPE_STRING)
1893 char *newstr = NULL;
1894 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
1895 vec_last(sy.out).out = (ast_expression*)fold_constgen_string(parser->fold, newstr, false);
1897 concatenated = true;
1901 if (!concatenated) {
1902 parseerror(parser, "expected operator or end of statement");
1907 if (!parser_next(parser)) {
1910 if (parser->tok == ';' ||
1911 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
1912 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
1918 while (vec_size(sy.ops)) {
1919 if (!parser_sy_apply_operator(parser, &sy))
1923 parser->lex->flags.noops = true;
1924 if (vec_size(sy.out) != 1) {
1925 parseerror(parser, "expression expected");
1928 expr = sy.out[0].out;
1931 if (vec_size(sy.paren)) {
1932 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
1940 parser->lex->flags.noops = true;
1941 for (i = 0; i < vec_size(sy.out); ++i) {
1943 ast_unref(sy.out[i].out);
1952 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
1954 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
1957 if (parser->tok != ';') {
1958 parseerror(parser, "semicolon expected after expression");
1962 if (!parser_next(parser)) {
1969 static void parser_enterblock(parser_t *parser)
1971 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1972 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1973 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1974 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1975 vec_push(parser->_block_ctx, parser_ctx(parser));
1978 vec_push(parser->correct_variables, correct_trie_new());
1979 vec_push(parser->correct_variables_score, NULL);
1982 static bool parser_leaveblock(parser_t *parser)
1985 size_t locals, typedefs;
1987 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1988 parseerror(parser, "internal error: parser_leaveblock with no block");
1992 util_htdel(vec_last(parser->variables));
1993 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
1995 vec_pop(parser->variables);
1996 vec_pop(parser->correct_variables);
1997 vec_pop(parser->correct_variables_score);
1998 if (!vec_size(parser->_blocklocals)) {
1999 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2003 locals = vec_last(parser->_blocklocals);
2004 vec_pop(parser->_blocklocals);
2005 while (vec_size(parser->_locals) != locals) {
2006 ast_expression *e = vec_last(parser->_locals);
2007 ast_value *v = (ast_value*)e;
2008 vec_pop(parser->_locals);
2009 if (ast_istype(e, ast_value) && !v->uses) {
2010 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2015 typedefs = vec_last(parser->_blocktypedefs);
2016 while (vec_size(parser->_typedefs) != typedefs) {
2017 ast_delete(vec_last(parser->_typedefs));
2018 vec_pop(parser->_typedefs);
2020 util_htdel(vec_last(parser->typedefs));
2021 vec_pop(parser->typedefs);
2023 vec_pop(parser->_block_ctx);
2028 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2030 vec_push(parser->_locals, e);
2031 util_htset(vec_last(parser->variables), name, (void*)e);
2035 vec_last(parser->correct_variables),
2036 &vec_last(parser->correct_variables_score),
2041 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2043 vec_push(parser->globals, e);
2044 util_htset(parser->htglobals, name, e);
2048 parser->correct_variables[0],
2049 &parser->correct_variables_score[0],
2054 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2058 ast_expression *prev;
2060 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2062 ast_type_to_string(cond, ty, sizeof(ty));
2063 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2066 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2069 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2072 parseerror(parser, "internal error: failed to process condition");
2077 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2079 /* vector types need to be cast to true booleans */
2080 ast_binary *bin = (ast_binary*)cond;
2081 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2083 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2085 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2088 parseerror(parser, "internal error: failed to process condition");
2095 unary = (ast_unary*)cond;
2096 /* ast_istype dereferences cond, should test here for safety */
2097 while (cond && ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2099 cond = unary->operand;
2100 unary->operand = NULL;
2103 unary = (ast_unary*)cond;
2107 parseerror(parser, "internal error: failed to process condition");
2109 if (ifnot) *_ifnot = !*_ifnot;
2113 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2116 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2119 lex_ctx_t ctx = parser_ctx(parser);
2121 (void)block; /* not touching */
2123 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2124 if (!parser_next(parser)) {
2125 parseerror(parser, "expected condition or 'not'");
2128 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2130 if (!parser_next(parser)) {
2131 parseerror(parser, "expected condition in parenthesis");
2135 if (parser->tok != '(') {
2136 parseerror(parser, "expected 'if' condition in parenthesis");
2139 /* parse into the expression */
2140 if (!parser_next(parser)) {
2141 parseerror(parser, "expected 'if' condition after opening paren");
2144 /* parse the condition */
2145 cond = parse_expression_leave(parser, false, true, false);
2149 if (parser->tok != ')') {
2150 parseerror(parser, "expected closing paren after 'if' condition");
2154 /* parse into the 'then' branch */
2155 if (!parser_next(parser)) {
2156 parseerror(parser, "expected statement for on-true branch of 'if'");
2160 if (!parse_statement_or_block(parser, &ontrue)) {
2165 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2166 /* check for an else */
2167 if (!strcmp(parser_tokval(parser), "else")) {
2168 /* parse into the 'else' branch */
2169 if (!parser_next(parser)) {
2170 parseerror(parser, "expected on-false branch after 'else'");
2175 if (!parse_statement_or_block(parser, &onfalse)) {
2182 cond = process_condition(parser, cond, &ifnot);
2184 if (ontrue) ast_delete(ontrue);
2185 if (onfalse) ast_delete(onfalse);
2190 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2192 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2193 *out = (ast_expression*)ifthen;
2197 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2198 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2203 /* skip the 'while' and get the body */
2204 if (!parser_next(parser)) {
2205 if (OPTS_FLAG(LOOP_LABELS))
2206 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2208 parseerror(parser, "expected 'while' condition in parenthesis");
2212 if (parser->tok == ':') {
2213 if (!OPTS_FLAG(LOOP_LABELS))
2214 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2215 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2216 parseerror(parser, "expected loop label");
2219 label = util_strdup(parser_tokval(parser));
2220 if (!parser_next(parser)) {
2222 parseerror(parser, "expected 'while' condition in parenthesis");
2227 if (parser->tok != '(') {
2228 parseerror(parser, "expected 'while' condition in parenthesis");
2232 vec_push(parser->breaks, label);
2233 vec_push(parser->continues, label);
2235 rv = parse_while_go(parser, block, out);
2238 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2239 parseerror(parser, "internal error: label stack corrupted");
2245 vec_pop(parser->breaks);
2246 vec_pop(parser->continues);
2251 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2254 ast_expression *cond, *ontrue;
2258 lex_ctx_t ctx = parser_ctx(parser);
2260 (void)block; /* not touching */
2262 /* parse into the expression */
2263 if (!parser_next(parser)) {
2264 parseerror(parser, "expected 'while' condition after opening paren");
2267 /* parse the condition */
2268 cond = parse_expression_leave(parser, false, true, false);
2272 if (parser->tok != ')') {
2273 parseerror(parser, "expected closing paren after 'while' condition");
2277 /* parse into the 'then' branch */
2278 if (!parser_next(parser)) {
2279 parseerror(parser, "expected while-loop body");
2283 if (!parse_statement_or_block(parser, &ontrue)) {
2288 cond = process_condition(parser, cond, &ifnot);
2293 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2294 *out = (ast_expression*)aloop;
2298 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2299 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2304 /* skip the 'do' and get the body */
2305 if (!parser_next(parser)) {
2306 if (OPTS_FLAG(LOOP_LABELS))
2307 parseerror(parser, "expected loop label or body");
2309 parseerror(parser, "expected loop body");
2313 if (parser->tok == ':') {
2314 if (!OPTS_FLAG(LOOP_LABELS))
2315 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2316 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2317 parseerror(parser, "expected loop label");
2320 label = util_strdup(parser_tokval(parser));
2321 if (!parser_next(parser)) {
2323 parseerror(parser, "expected loop body");
2328 vec_push(parser->breaks, label);
2329 vec_push(parser->continues, label);
2331 rv = parse_dowhile_go(parser, block, out);
2334 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2335 parseerror(parser, "internal error: label stack corrupted");
2338 * Test for NULL otherwise ast_delete dereferences null pointer
2346 vec_pop(parser->breaks);
2347 vec_pop(parser->continues);
2352 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2355 ast_expression *cond, *ontrue;
2359 lex_ctx_t ctx = parser_ctx(parser);
2361 (void)block; /* not touching */
2363 if (!parse_statement_or_block(parser, &ontrue))
2366 /* expect the "while" */
2367 if (parser->tok != TOKEN_KEYWORD ||
2368 strcmp(parser_tokval(parser), "while"))
2370 parseerror(parser, "expected 'while' and condition");
2375 /* skip the 'while' and check for opening paren */
2376 if (!parser_next(parser) || parser->tok != '(') {
2377 parseerror(parser, "expected 'while' condition in parenthesis");
2381 /* parse into the expression */
2382 if (!parser_next(parser)) {
2383 parseerror(parser, "expected 'while' condition after opening paren");
2387 /* parse the condition */
2388 cond = parse_expression_leave(parser, false, true, false);
2392 if (parser->tok != ')') {
2393 parseerror(parser, "expected closing paren after 'while' condition");
2399 if (!parser_next(parser) || parser->tok != ';') {
2400 parseerror(parser, "expected semicolon after condition");
2406 if (!parser_next(parser)) {
2407 parseerror(parser, "parse error");
2413 cond = process_condition(parser, cond, &ifnot);
2418 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2419 *out = (ast_expression*)aloop;
2423 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2424 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2429 /* skip the 'for' and check for opening paren */
2430 if (!parser_next(parser)) {
2431 if (OPTS_FLAG(LOOP_LABELS))
2432 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2434 parseerror(parser, "expected 'for' expressions in parenthesis");
2438 if (parser->tok == ':') {
2439 if (!OPTS_FLAG(LOOP_LABELS))
2440 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2441 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2442 parseerror(parser, "expected loop label");
2445 label = util_strdup(parser_tokval(parser));
2446 if (!parser_next(parser)) {
2448 parseerror(parser, "expected 'for' expressions in parenthesis");
2453 if (parser->tok != '(') {
2454 parseerror(parser, "expected 'for' expressions in parenthesis");
2458 vec_push(parser->breaks, label);
2459 vec_push(parser->continues, label);
2461 rv = parse_for_go(parser, block, out);
2464 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2465 parseerror(parser, "internal error: label stack corrupted");
2471 vec_pop(parser->breaks);
2472 vec_pop(parser->continues);
2476 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2479 ast_expression *initexpr, *cond, *increment, *ontrue;
2484 lex_ctx_t ctx = parser_ctx(parser);
2486 parser_enterblock(parser);
2493 /* parse into the expression */
2494 if (!parser_next(parser)) {
2495 parseerror(parser, "expected 'for' initializer after opening paren");
2500 if (parser->tok == TOKEN_IDENT)
2501 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2503 if (typevar || parser->tok == TOKEN_TYPENAME) {
2505 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2506 if (parsewarning(parser, WARN_EXTENSIONS,
2507 "current standard does not allow variable declarations in for-loop initializers"))
2511 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2514 else if (parser->tok != ';')
2516 initexpr = parse_expression_leave(parser, false, false, false);
2521 /* move on to condition */
2522 if (parser->tok != ';') {
2523 parseerror(parser, "expected semicolon after for-loop initializer");
2526 if (!parser_next(parser)) {
2527 parseerror(parser, "expected for-loop condition");
2531 /* parse the condition */
2532 if (parser->tok != ';') {
2533 cond = parse_expression_leave(parser, false, true, false);
2538 /* move on to incrementor */
2539 if (parser->tok != ';') {
2540 parseerror(parser, "expected semicolon after for-loop initializer");
2543 if (!parser_next(parser)) {
2544 parseerror(parser, "expected for-loop condition");
2548 /* parse the incrementor */
2549 if (parser->tok != ')') {
2550 lex_ctx_t condctx = parser_ctx(parser);
2551 increment = parse_expression_leave(parser, false, false, false);
2554 if (!ast_side_effects(increment)) {
2555 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2561 if (parser->tok != ')') {
2562 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2565 /* parse into the 'then' branch */
2566 if (!parser_next(parser)) {
2567 parseerror(parser, "expected for-loop body");
2570 if (!parse_statement_or_block(parser, &ontrue))
2574 cond = process_condition(parser, cond, &ifnot);
2578 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2579 *out = (ast_expression*)aloop;
2581 if (!parser_leaveblock(parser)) {
2587 if (initexpr) ast_unref(initexpr);
2588 if (cond) ast_unref(cond);
2589 if (increment) ast_unref(increment);
2590 (void)!parser_leaveblock(parser);
2594 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2596 ast_expression *exp = NULL;
2597 ast_expression *var = NULL;
2598 ast_return *ret = NULL;
2599 ast_value *retval = parser->function->return_value;
2600 ast_value *expected = parser->function->vtype;
2602 lex_ctx_t ctx = parser_ctx(parser);
2604 (void)block; /* not touching */
2606 if (!parser_next(parser)) {
2607 parseerror(parser, "expected return expression");
2611 /* return assignments */
2612 if (parser->tok == '=') {
2613 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
2614 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
2618 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
2620 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
2621 parseerror(parser, "invalid return type: `%s'", ty1);
2625 if (!parser_next(parser)) {
2626 parseerror(parser, "expected return assignment expression");
2630 if (!(exp = parse_expression_leave(parser, false, false, false)))
2633 /* prepare the return value */
2635 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
2636 ast_type_adopt(retval, expected->expression.next);
2637 parser->function->return_value = retval;
2640 if (!ast_compare_type(exp, (ast_expression*)retval)) {
2641 char ty1[1024], ty2[1024];
2642 ast_type_to_string(exp, ty1, sizeof(ty1));
2643 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
2644 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
2647 /* store to 'return' local variable */
2648 var = (ast_expression*)ast_store_new(
2650 type_store_instr[expected->expression.next->vtype],
2651 (ast_expression*)retval, exp);
2658 if (parser->tok != ';')
2659 parseerror(parser, "missing semicolon after return assignment");
2660 else if (!parser_next(parser))
2661 parseerror(parser, "parse error after return assignment");
2667 if (parser->tok != ';') {
2668 exp = parse_expression(parser, false, false);
2672 if (exp->vtype != TYPE_NIL &&
2673 exp->vtype != ((ast_expression*)expected)->next->vtype)
2675 parseerror(parser, "return with invalid expression");
2678 ret = ast_return_new(ctx, exp);
2684 if (!parser_next(parser))
2685 parseerror(parser, "parse error");
2687 if (!retval && expected->expression.next->vtype != TYPE_VOID)
2689 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2691 ret = ast_return_new(ctx, (ast_expression*)retval);
2693 *out = (ast_expression*)ret;
2697 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2700 unsigned int levels = 0;
2701 lex_ctx_t ctx = parser_ctx(parser);
2702 const char **loops = (is_continue ? parser->continues : parser->breaks);
2704 (void)block; /* not touching */
2705 if (!parser_next(parser)) {
2706 parseerror(parser, "expected semicolon or loop label");
2710 if (!vec_size(loops)) {
2712 parseerror(parser, "`continue` can only be used inside loops");
2714 parseerror(parser, "`break` can only be used inside loops or switches");
2717 if (parser->tok == TOKEN_IDENT) {
2718 if (!OPTS_FLAG(LOOP_LABELS))
2719 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2720 i = vec_size(loops);
2722 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2725 parseerror(parser, "no such loop to %s: `%s`",
2726 (is_continue ? "continue" : "break out of"),
2727 parser_tokval(parser));
2732 if (!parser_next(parser)) {
2733 parseerror(parser, "expected semicolon");
2738 if (parser->tok != ';') {
2739 parseerror(parser, "expected semicolon");
2743 if (!parser_next(parser))
2744 parseerror(parser, "parse error");
2746 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2750 /* returns true when it was a variable qualifier, false otherwise!
2751 * on error, cvq is set to CV_WRONG
2753 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2755 bool had_const = false;
2756 bool had_var = false;
2757 bool had_noref = false;
2758 bool had_attrib = false;
2759 bool had_static = false;
2764 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2766 /* parse an attribute */
2767 if (!parser_next(parser)) {
2768 parseerror(parser, "expected attribute after `[[`");
2772 if (!strcmp(parser_tokval(parser), "noreturn")) {
2773 flags |= AST_FLAG_NORETURN;
2774 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2775 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2780 else if (!strcmp(parser_tokval(parser), "noref")) {
2782 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2783 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2788 else if (!strcmp(parser_tokval(parser), "inline")) {
2789 flags |= AST_FLAG_INLINE;
2790 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2791 parseerror(parser, "`inline` attribute has no parameters, expected `]]`");
2796 else if (!strcmp(parser_tokval(parser), "eraseable")) {
2797 flags |= AST_FLAG_ERASEABLE;
2798 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2799 parseerror(parser, "`eraseable` attribute has no parameters, expected `]]`");
2804 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
2805 flags |= AST_FLAG_ALIAS;
2808 if (!parser_next(parser)) {
2809 parseerror(parser, "parse error in attribute");
2813 if (parser->tok == '(') {
2814 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2815 parseerror(parser, "`alias` attribute missing parameter");
2819 *message = util_strdup(parser_tokval(parser));
2821 if (!parser_next(parser)) {
2822 parseerror(parser, "parse error in attribute");
2826 if (parser->tok != ')') {
2827 parseerror(parser, "`alias` attribute expected `)` after parameter");
2831 if (!parser_next(parser)) {
2832 parseerror(parser, "parse error in attribute");
2837 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2838 parseerror(parser, "`alias` attribute expected `]]`");
2842 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2843 flags |= AST_FLAG_DEPRECATED;
2846 if (!parser_next(parser)) {
2847 parseerror(parser, "parse error in attribute");
2851 if (parser->tok == '(') {
2852 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2853 parseerror(parser, "`deprecated` attribute missing parameter");
2857 *message = util_strdup(parser_tokval(parser));
2859 if (!parser_next(parser)) {
2860 parseerror(parser, "parse error in attribute");
2864 if(parser->tok != ')') {
2865 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2869 if (!parser_next(parser)) {
2870 parseerror(parser, "parse error in attribute");
2875 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2876 parseerror(parser, "`deprecated` attribute expected `]]`");
2879 if (*message) mem_d(*message);
2887 /* Skip tokens until we hit a ]] */
2888 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2889 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2890 if (!parser_next(parser)) {
2891 parseerror(parser, "error inside attribute");
2898 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2900 else if (!strcmp(parser_tokval(parser), "const"))
2902 else if (!strcmp(parser_tokval(parser), "var"))
2904 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2906 else if (!strcmp(parser_tokval(parser), "noref"))
2908 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2913 if (!parser_next(parser))
2923 *is_static = had_static;
2927 parseerror(parser, "parse error after variable qualifier");
2932 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2933 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2938 /* skip the 'while' and get the body */
2939 if (!parser_next(parser)) {
2940 if (OPTS_FLAG(LOOP_LABELS))
2941 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2943 parseerror(parser, "expected 'switch' operand in parenthesis");
2947 if (parser->tok == ':') {
2948 if (!OPTS_FLAG(LOOP_LABELS))
2949 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2950 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2951 parseerror(parser, "expected loop label");
2954 label = util_strdup(parser_tokval(parser));
2955 if (!parser_next(parser)) {
2957 parseerror(parser, "expected 'switch' operand in parenthesis");
2962 if (parser->tok != '(') {
2963 parseerror(parser, "expected 'switch' operand in parenthesis");
2967 vec_push(parser->breaks, label);
2969 rv = parse_switch_go(parser, block, out);
2972 if (vec_last(parser->breaks) != label) {
2973 parseerror(parser, "internal error: label stack corrupted");
2979 vec_pop(parser->breaks);
2984 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
2986 ast_expression *operand;
2989 ast_switch *switchnode;
2990 ast_switch_case swcase;
2993 bool noref, is_static;
2994 uint32_t qflags = 0;
2996 lex_ctx_t ctx = parser_ctx(parser);
2998 (void)block; /* not touching */
3001 /* parse into the expression */
3002 if (!parser_next(parser)) {
3003 parseerror(parser, "expected switch operand");
3006 /* parse the operand */
3007 operand = parse_expression_leave(parser, false, false, false);
3011 switchnode = ast_switch_new(ctx, operand);
3014 if (parser->tok != ')') {
3015 ast_delete(switchnode);
3016 parseerror(parser, "expected closing paren after 'switch' operand");
3020 /* parse over the opening paren */
3021 if (!parser_next(parser) || parser->tok != '{') {
3022 ast_delete(switchnode);
3023 parseerror(parser, "expected list of cases");
3027 if (!parser_next(parser)) {
3028 ast_delete(switchnode);
3029 parseerror(parser, "expected 'case' or 'default'");
3033 /* new block; allow some variables to be declared here */
3034 parser_enterblock(parser);
3037 if (parser->tok == TOKEN_IDENT)
3038 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3039 if (typevar || parser->tok == TOKEN_TYPENAME) {
3040 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3041 ast_delete(switchnode);
3046 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3048 if (cvq == CV_WRONG) {
3049 ast_delete(switchnode);
3052 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3053 ast_delete(switchnode);
3062 while (parser->tok != '}') {
3063 ast_block *caseblock;
3065 if (!strcmp(parser_tokval(parser), "case")) {
3066 if (!parser_next(parser)) {
3067 ast_delete(switchnode);
3068 parseerror(parser, "expected expression for case");
3071 swcase.value = parse_expression_leave(parser, false, false, false);
3072 if (!swcase.value) {
3073 ast_delete(switchnode);
3074 parseerror(parser, "expected expression for case");
3077 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3078 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3079 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3085 else if (!strcmp(parser_tokval(parser), "default")) {
3086 swcase.value = NULL;
3087 if (!parser_next(parser)) {
3088 ast_delete(switchnode);
3089 parseerror(parser, "expected colon");
3094 ast_delete(switchnode);
3095 parseerror(parser, "expected 'case' or 'default'");
3099 /* Now the colon and body */
3100 if (parser->tok != ':') {
3101 if (swcase.value) ast_unref(swcase.value);
3102 ast_delete(switchnode);
3103 parseerror(parser, "expected colon");
3107 if (!parser_next(parser)) {
3108 if (swcase.value) ast_unref(swcase.value);
3109 ast_delete(switchnode);
3110 parseerror(parser, "expected statements or case");
3113 caseblock = ast_block_new(parser_ctx(parser));
3115 if (swcase.value) ast_unref(swcase.value);
3116 ast_delete(switchnode);
3119 swcase.code = (ast_expression*)caseblock;
3120 vec_push(switchnode->cases, swcase);
3122 ast_expression *expr;
3123 if (parser->tok == '}')
3125 if (parser->tok == TOKEN_KEYWORD) {
3126 if (!strcmp(parser_tokval(parser), "case") ||
3127 !strcmp(parser_tokval(parser), "default"))
3132 if (!parse_statement(parser, caseblock, &expr, true)) {
3133 ast_delete(switchnode);
3138 if (!ast_block_add_expr(caseblock, expr)) {
3139 ast_delete(switchnode);
3145 parser_leaveblock(parser);
3148 if (parser->tok != '}') {
3149 ast_delete(switchnode);
3150 parseerror(parser, "expected closing paren of case list");
3153 if (!parser_next(parser)) {
3154 ast_delete(switchnode);
3155 parseerror(parser, "parse error after switch");
3158 *out = (ast_expression*)switchnode;
3162 /* parse computed goto sides */
3163 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3164 ast_expression *on_true;
3165 ast_expression *on_false;
3166 ast_expression *cond;
3171 if (ast_istype(*side, ast_ternary)) {
3172 ast_ternary *tern = (ast_ternary*)*side;
3173 on_true = parse_goto_computed(parser, &tern->on_true);
3174 on_false = parse_goto_computed(parser, &tern->on_false);
3176 if (!on_true || !on_false) {
3177 parseerror(parser, "expected label or expression in ternary");
3178 if (on_true) ast_unref(on_true);
3179 if (on_false) ast_unref(on_false);
3187 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3188 } else if (ast_istype(*side, ast_label)) {
3189 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3190 ast_goto_set_label(gt, ((ast_label*)*side));
3192 return (ast_expression*)gt;
3197 static bool parse_goto(parser_t *parser, ast_expression **out)
3199 ast_goto *gt = NULL;
3200 ast_expression *lbl;
3202 if (!parser_next(parser))
3205 if (parser->tok != TOKEN_IDENT) {
3206 ast_expression *expression;
3208 /* could be an expression i.e computed goto :-) */
3209 if (parser->tok != '(') {
3210 parseerror(parser, "expected label name after `goto`");
3214 /* failed to parse expression for goto */
3215 if (!(expression = parse_expression(parser, false, true)) ||
3216 !(*out = parse_goto_computed(parser, &expression))) {
3217 parseerror(parser, "invalid goto expression");
3219 ast_unref(expression);
3226 /* not computed goto */
3227 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3228 lbl = parser_find_label(parser, gt->name);
3230 if (!ast_istype(lbl, ast_label)) {
3231 parseerror(parser, "internal error: label is not an ast_label");
3235 ast_goto_set_label(gt, (ast_label*)lbl);
3238 vec_push(parser->gotos, gt);
3240 if (!parser_next(parser) || parser->tok != ';') {
3241 parseerror(parser, "semicolon expected after goto label");
3244 if (!parser_next(parser)) {
3245 parseerror(parser, "parse error after goto");
3249 *out = (ast_expression*)gt;
3253 static bool parse_skipwhite(parser_t *parser)
3256 if (!parser_next(parser))
3258 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3259 return parser->tok < TOKEN_ERROR;
3262 static bool parse_eol(parser_t *parser)
3264 if (!parse_skipwhite(parser))
3266 return parser->tok == TOKEN_EOL;
3269 static bool parse_pragma_do(parser_t *parser)
3271 if (!parser_next(parser) ||
3272 parser->tok != TOKEN_IDENT ||
3273 strcmp(parser_tokval(parser), "pragma"))
3275 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3278 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3279 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3283 if (!strcmp(parser_tokval(parser), "noref")) {
3284 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3285 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3288 parser->noref = !!parser_token(parser)->constval.i;
3289 if (!parse_eol(parser)) {
3290 parseerror(parser, "parse error after `noref` pragma");
3296 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3299 while (!parse_eol(parser)) {
3300 parser_next(parser);
3309 static bool parse_pragma(parser_t *parser)
3312 parser->lex->flags.preprocessing = true;
3313 parser->lex->flags.mergelines = true;
3314 rv = parse_pragma_do(parser);
3315 if (parser->tok != TOKEN_EOL) {
3316 parseerror(parser, "junk after pragma");
3319 parser->lex->flags.preprocessing = false;
3320 parser->lex->flags.mergelines = false;
3321 if (!parser_next(parser)) {
3322 parseerror(parser, "parse error after pragma");
3328 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3330 bool noref, is_static;
3332 uint32_t qflags = 0;
3333 ast_value *typevar = NULL;
3334 char *vstring = NULL;
3338 if (parser->tok == TOKEN_IDENT)
3339 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3341 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.' || parser->tok == TOKEN_DOTS)
3343 /* local variable */
3345 parseerror(parser, "cannot declare a variable from here");
3348 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3349 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3352 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3356 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3358 if (cvq == CV_WRONG)
3360 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3362 else if (parser->tok == TOKEN_KEYWORD)
3364 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3369 if (!parser_next(parser)) {
3370 parseerror(parser, "parse error after __builtin_debug_printtype");
3374 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3376 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3377 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3378 if (!parser_next(parser)) {
3379 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3385 if (!parse_statement(parser, block, out, allow_cases))
3388 con_out("__builtin_debug_printtype: got no output node\n");
3391 ast_type_to_string(*out, ty, sizeof(ty));
3392 con_out("__builtin_debug_printtype: `%s`\n", ty);
3397 else if (!strcmp(parser_tokval(parser), "return"))
3399 return parse_return(parser, block, out);
3401 else if (!strcmp(parser_tokval(parser), "if"))
3403 return parse_if(parser, block, out);
3405 else if (!strcmp(parser_tokval(parser), "while"))
3407 return parse_while(parser, block, out);
3409 else if (!strcmp(parser_tokval(parser), "do"))
3411 return parse_dowhile(parser, block, out);
3413 else if (!strcmp(parser_tokval(parser), "for"))
3415 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3416 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3419 return parse_for(parser, block, out);
3421 else if (!strcmp(parser_tokval(parser), "break"))
3423 return parse_break_continue(parser, block, out, false);
3425 else if (!strcmp(parser_tokval(parser), "continue"))
3427 return parse_break_continue(parser, block, out, true);
3429 else if (!strcmp(parser_tokval(parser), "switch"))
3431 return parse_switch(parser, block, out);
3433 else if (!strcmp(parser_tokval(parser), "case") ||
3434 !strcmp(parser_tokval(parser), "default"))
3437 parseerror(parser, "unexpected 'case' label");
3442 else if (!strcmp(parser_tokval(parser), "goto"))
3444 return parse_goto(parser, out);
3446 else if (!strcmp(parser_tokval(parser), "typedef"))
3448 if (!parser_next(parser)) {
3449 parseerror(parser, "expected type definition after 'typedef'");
3452 return parse_typedef(parser);
3454 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3457 else if (parser->tok == '{')
3460 inner = parse_block(parser);
3463 *out = (ast_expression*)inner;
3466 else if (parser->tok == ':')
3470 if (!parser_next(parser)) {
3471 parseerror(parser, "expected label name");
3474 if (parser->tok != TOKEN_IDENT) {
3475 parseerror(parser, "label must be an identifier");
3478 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3480 if (!label->undefined) {
3481 parseerror(parser, "label `%s` already defined", label->name);
3484 label->undefined = false;
3487 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3488 vec_push(parser->labels, label);
3490 *out = (ast_expression*)label;
3491 if (!parser_next(parser)) {
3492 parseerror(parser, "parse error after label");
3495 for (i = 0; i < vec_size(parser->gotos); ++i) {
3496 if (!strcmp(parser->gotos[i]->name, label->name)) {
3497 ast_goto_set_label(parser->gotos[i], label);
3498 vec_remove(parser->gotos, i, 1);
3504 else if (parser->tok == ';')
3506 if (!parser_next(parser)) {
3507 parseerror(parser, "parse error after empty statement");
3514 lex_ctx_t ctx = parser_ctx(parser);
3515 ast_expression *exp = parse_expression(parser, false, false);
3519 if (!ast_side_effects(exp)) {
3520 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3527 static bool parse_enum(parser_t *parser)
3530 bool reverse = false;
3532 ast_value **values = NULL;
3533 ast_value *var = NULL;
3536 ast_expression *old;
3538 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3539 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3543 /* enumeration attributes (can add more later) */
3544 if (parser->tok == ':') {
3545 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3546 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3551 if (!strcmp(parser_tokval(parser), "flag")) {
3555 else if (!strcmp(parser_tokval(parser), "reverse")) {
3559 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3563 if (!parser_next(parser) || parser->tok != '{') {
3564 parseerror(parser, "expected `{` after enum attribute ");
3570 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3571 if (parser->tok == '}') {
3572 /* allow an empty enum */
3575 parseerror(parser, "expected identifier or `}`");
3579 old = parser_find_field(parser, parser_tokval(parser));
3581 old = parser_find_global(parser, parser_tokval(parser));
3583 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3584 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3588 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3589 vec_push(values, var);
3590 var->cvq = CV_CONST;
3591 var->hasvalue = true;
3593 /* for flagged enumerations increment in POTs of TWO */
3594 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3595 parser_addglobal(parser, var->name, (ast_expression*)var);
3597 if (!parser_next(parser)) {
3598 parseerror(parser, "expected `=`, `}` or comma after identifier");
3602 if (parser->tok == ',')
3604 if (parser->tok == '}')
3606 if (parser->tok != '=') {
3607 parseerror(parser, "expected `=`, `}` or comma after identifier");
3611 if (!parser_next(parser)) {
3612 parseerror(parser, "expected expression after `=`");
3616 /* We got a value! */
3617 old = parse_expression_leave(parser, true, false, false);
3618 asvalue = (ast_value*)old;
3619 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3620 compile_error(ast_ctx(var), "constant value or expression expected");
3623 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3625 if (parser->tok == '}')
3627 if (parser->tok != ',') {
3628 parseerror(parser, "expected `}` or comma after expression");
3633 /* patch them all (for reversed attribute) */
3636 for (i = 0; i < vec_size(values); i++)
3637 values[i]->constval.vfloat = vec_size(values) - i - 1;
3640 if (parser->tok != '}') {
3641 parseerror(parser, "internal error: breaking without `}`");
3645 if (!parser_next(parser) || parser->tok != ';') {
3646 parseerror(parser, "expected semicolon after enumeration");
3650 if (!parser_next(parser)) {
3651 parseerror(parser, "parse error after enumeration");
3663 static bool parse_block_into(parser_t *parser, ast_block *block)
3667 parser_enterblock(parser);
3669 if (!parser_next(parser)) { /* skip the '{' */
3670 parseerror(parser, "expected function body");
3674 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3676 ast_expression *expr = NULL;
3677 if (parser->tok == '}')
3680 if (!parse_statement(parser, block, &expr, false)) {
3681 /* parseerror(parser, "parse error"); */
3687 if (!ast_block_add_expr(block, expr)) {
3694 if (parser->tok != '}') {
3697 (void)parser_next(parser);
3701 if (!parser_leaveblock(parser))
3703 return retval && !!block;
3706 static ast_block* parse_block(parser_t *parser)
3709 block = ast_block_new(parser_ctx(parser));
3712 if (!parse_block_into(parser, block)) {
3713 ast_block_delete(block);
3719 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3721 if (parser->tok == '{') {
3722 *out = (ast_expression*)parse_block(parser);
3725 return parse_statement(parser, NULL, out, false);
3728 static bool create_vector_members(ast_value *var, ast_member **me)
3731 size_t len = strlen(var->name);
3733 for (i = 0; i < 3; ++i) {
3734 char *name = (char*)mem_a(len+3);
3735 memcpy(name, var->name, len);
3737 name[len+1] = 'x'+i;
3739 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3748 do { ast_member_delete(me[--i]); } while(i);
3752 static bool parse_function_body(parser_t *parser, ast_value *var)
3754 ast_block *block = NULL;
3759 ast_expression *framenum = NULL;
3760 ast_expression *nextthink = NULL;
3761 /* None of the following have to be deleted */
3762 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3763 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3764 bool has_frame_think;
3768 has_frame_think = false;
3769 old = parser->function;
3771 if (var->expression.flags & AST_FLAG_ALIAS) {
3772 parseerror(parser, "function aliases cannot have bodies");
3776 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3777 parseerror(parser, "gotos/labels leaking");
3781 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
3782 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3783 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
3789 if (parser->tok == '[') {
3790 /* got a frame definition: [ framenum, nextthink ]
3791 * this translates to:
3792 * self.frame = framenum;
3793 * self.nextthink = time + 0.1;
3794 * self.think = nextthink;
3798 fld_think = parser_find_field(parser, "think");
3799 fld_nextthink = parser_find_field(parser, "nextthink");
3800 fld_frame = parser_find_field(parser, "frame");
3801 if (!fld_think || !fld_nextthink || !fld_frame) {
3802 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3803 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3806 gbl_time = parser_find_global(parser, "time");
3807 gbl_self = parser_find_global(parser, "self");
3808 if (!gbl_time || !gbl_self) {
3809 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3810 parseerror(parser, "please declare the following globals: `time`, `self`");
3814 if (!parser_next(parser))
3817 framenum = parse_expression_leave(parser, true, false, false);
3819 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3822 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3823 ast_unref(framenum);
3824 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3828 if (parser->tok != ',') {
3829 ast_unref(framenum);
3830 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3831 parseerror(parser, "Got a %i\n", parser->tok);
3835 if (!parser_next(parser)) {
3836 ast_unref(framenum);
3840 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3842 /* qc allows the use of not-yet-declared functions here
3843 * - this automatically creates a prototype */
3844 ast_value *thinkfunc;
3845 ast_expression *functype = fld_think->next;
3847 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
3848 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
3849 ast_unref(framenum);
3850 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3853 ast_type_adopt(thinkfunc, functype);
3855 if (!parser_next(parser)) {
3856 ast_unref(framenum);
3857 ast_delete(thinkfunc);
3861 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3863 nextthink = (ast_expression*)thinkfunc;
3866 nextthink = parse_expression_leave(parser, true, false, false);
3868 ast_unref(framenum);
3869 parseerror(parser, "expected a think-function in [frame,think] notation");
3874 if (!ast_istype(nextthink, ast_value)) {
3875 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3879 if (retval && parser->tok != ']') {
3880 parseerror(parser, "expected closing `]` for [frame,think] notation");
3884 if (retval && !parser_next(parser)) {
3888 if (retval && parser->tok != '{') {
3889 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3894 ast_unref(nextthink);
3895 ast_unref(framenum);
3899 has_frame_think = true;
3902 block = ast_block_new(parser_ctx(parser));
3904 parseerror(parser, "failed to allocate block");
3905 if (has_frame_think) {
3906 ast_unref(nextthink);
3907 ast_unref(framenum);
3912 if (has_frame_think) {
3914 ast_expression *self_frame;
3915 ast_expression *self_nextthink;
3916 ast_expression *self_think;
3917 ast_expression *time_plus_1;
3918 ast_store *store_frame;
3919 ast_store *store_nextthink;
3920 ast_store *store_think;
3922 ctx = parser_ctx(parser);
3923 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3924 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3925 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3927 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3928 gbl_time, (ast_expression*)fold_constgen_float(parser->fold, 0.1f));
3930 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3931 if (self_frame) ast_delete(self_frame);
3932 if (self_nextthink) ast_delete(self_nextthink);
3933 if (self_think) ast_delete(self_think);
3934 if (time_plus_1) ast_delete(time_plus_1);
3940 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3941 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3942 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3945 ast_delete(self_frame);
3948 if (!store_nextthink) {
3949 ast_delete(self_nextthink);
3953 ast_delete(self_think);
3957 if (store_frame) ast_delete(store_frame);
3958 if (store_nextthink) ast_delete(store_nextthink);
3959 if (store_think) ast_delete(store_think);
3962 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3963 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3964 !ast_block_add_expr(block, (ast_expression*)store_think))
3971 parseerror(parser, "failed to generate code for [frame,think]");
3972 ast_unref(nextthink);
3973 ast_unref(framenum);
3979 if (var->hasvalue) {
3980 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
3981 ast_block_delete(block);
3985 func = ast_function_new(ast_ctx(var), var->name, var);
3987 parseerror(parser, "failed to allocate function for `%s`", var->name);
3988 ast_block_delete(block);
3991 vec_push(parser->functions, func);
3993 parser_enterblock(parser);
3995 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3997 ast_value *param = var->expression.params[parami];
4000 if (param->expression.vtype != TYPE_VECTOR &&
4001 (param->expression.vtype != TYPE_FIELD ||
4002 param->expression.next->vtype != TYPE_VECTOR))
4007 if (!create_vector_members(param, me)) {
4008 ast_block_delete(block);
4012 for (e = 0; e < 3; ++e) {
4013 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4014 ast_block_collect(block, (ast_expression*)me[e]);
4018 if (var->argcounter) {
4019 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4020 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4024 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4026 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4027 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4028 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4029 varargs->expression.count = 0;
4030 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4031 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4032 ast_delete(varargs);
4033 ast_block_delete(block);
4036 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4037 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4038 ast_delete(varargs);
4039 ast_block_delete(block);
4042 func->varargs = varargs;
4043 func->fixedparams = (ast_value*)fold_constgen_float(parser->fold, vec_size(var->expression.params));
4046 parser->function = func;
4047 if (!parse_block_into(parser, block)) {
4048 ast_block_delete(block);
4052 vec_push(func->blocks, block);
4055 parser->function = old;
4056 if (!parser_leaveblock(parser))
4058 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4059 parseerror(parser, "internal error: local scopes left");
4063 if (parser->tok == ';')
4064 return parser_next(parser);
4065 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4066 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4070 (void)!parser_leaveblock(parser);
4071 vec_pop(parser->functions);
4072 ast_function_delete(func);
4073 var->constval.vfunc = NULL;
4076 parser->function = old;
4080 static ast_expression *array_accessor_split(
4085 ast_expression *left,
4086 ast_expression *right
4092 lex_ctx_t ctx = ast_ctx(array);
4094 if (!left || !right) {
4095 if (left) ast_delete(left);
4096 if (right) ast_delete(right);
4100 cmp = ast_binary_new(ctx, INSTR_LT,
4101 (ast_expression*)index,
4102 (ast_expression*)fold_constgen_float(parser->fold, middle));
4106 parseerror(parser, "internal error: failed to create comparison for array setter");
4110 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4112 ast_delete(cmp); /* will delete left and right */
4113 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4117 return (ast_expression*)ifthen;
4120 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4122 lex_ctx_t ctx = ast_ctx(array);
4124 if (from+1 == afterend) {
4125 /* set this value */
4128 ast_array_index *subscript;
4130 int assignop = type_store_instr[value->expression.vtype];
4132 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4133 assignop = INSTR_STORE_V;
4135 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4139 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4141 ast_delete(subscript);
4145 block = ast_block_new(ctx);
4151 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4156 ret = ast_return_new(ctx, NULL);
4162 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4167 return (ast_expression*)block;
4169 ast_expression *left, *right;
4170 size_t diff = afterend - from;
4171 size_t middle = from + diff/2;
4172 left = array_setter_node(parser, array, index, value, from, middle);
4173 right = array_setter_node(parser, array, index, value, middle, afterend);
4174 return array_accessor_split(parser, array, index, middle, left, right);
4178 static ast_expression *array_field_setter_node(
4187 lex_ctx_t ctx = ast_ctx(array);
4189 if (from+1 == afterend) {
4190 /* set this value */
4193 ast_entfield *entfield;
4194 ast_array_index *subscript;
4196 int assignop = type_storep_instr[value->expression.vtype];
4198 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4199 assignop = INSTR_STOREP_V;
4201 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4205 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4206 subscript->expression.vtype = TYPE_FIELD;
4208 entfield = ast_entfield_new_force(ctx,
4209 (ast_expression*)entity,
4210 (ast_expression*)subscript,
4211 (ast_expression*)subscript);
4213 ast_delete(subscript);
4217 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4219 ast_delete(entfield);
4223 block = ast_block_new(ctx);
4229 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4234 ret = ast_return_new(ctx, NULL);
4240 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4245 return (ast_expression*)block;
4247 ast_expression *left, *right;
4248 size_t diff = afterend - from;
4249 size_t middle = from + diff/2;
4250 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4251 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4252 return array_accessor_split(parser, array, index, middle, left, right);
4256 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4258 lex_ctx_t ctx = ast_ctx(array);
4260 if (from+1 == afterend) {
4262 ast_array_index *subscript;
4264 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4268 ret = ast_return_new(ctx, (ast_expression*)subscript);
4270 ast_delete(subscript);
4274 return (ast_expression*)ret;
4276 ast_expression *left, *right;
4277 size_t diff = afterend - from;
4278 size_t middle = from + diff/2;
4279 left = array_getter_node(parser, array, index, from, middle);
4280 right = array_getter_node(parser, array, index, middle, afterend);
4281 return array_accessor_split(parser, array, index, middle, left, right);
4285 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4287 ast_function *func = NULL;
4288 ast_value *fval = NULL;
4289 ast_block *body = NULL;
4291 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4293 parseerror(parser, "failed to create accessor function value");
4297 func = ast_function_new(ast_ctx(array), funcname, fval);
4300 parseerror(parser, "failed to create accessor function node");
4304 body = ast_block_new(ast_ctx(array));
4306 parseerror(parser, "failed to create block for array accessor");
4312 vec_push(func->blocks, body);
4315 vec_push(parser->accessors, fval);
4320 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4322 ast_value *index = NULL;
4323 ast_value *value = NULL;
4327 if (!ast_istype(array->expression.next, ast_value)) {
4328 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4332 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4334 func = fval->constval.vfunc;
4335 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4337 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4338 value = ast_value_copy((ast_value*)array->expression.next);
4340 if (!index || !value) {
4341 parseerror(parser, "failed to create locals for array accessor");
4344 (void)!ast_value_set_name(value, "value"); /* not important */
4345 vec_push(fval->expression.params, index);
4346 vec_push(fval->expression.params, value);
4348 array->setter = fval;
4351 if (index) ast_delete(index);
4352 if (value) ast_delete(value);
4358 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4360 ast_expression *root = NULL;
4361 root = array_setter_node(parser, array,
4362 array->setter->expression.params[0],
4363 array->setter->expression.params[1],
4364 0, array->expression.count);
4366 parseerror(parser, "failed to build accessor search tree");
4369 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4376 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4378 if (!parser_create_array_setter_proto(parser, array, funcname))
4380 return parser_create_array_setter_impl(parser, array);
4383 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4385 ast_expression *root = NULL;
4386 ast_value *entity = NULL;
4387 ast_value *index = NULL;
4388 ast_value *value = NULL;
4392 if (!ast_istype(array->expression.next, ast_value)) {
4393 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4397 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4399 func = fval->constval.vfunc;
4400 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4402 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4403 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4404 value = ast_value_copy((ast_value*)array->expression.next);
4405 if (!entity || !index || !value) {
4406 parseerror(parser, "failed to create locals for array accessor");
4409 (void)!ast_value_set_name(value, "value"); /* not important */
4410 vec_push(fval->expression.params, entity);
4411 vec_push(fval->expression.params, index);
4412 vec_push(fval->expression.params, value);
4414 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4416 parseerror(parser, "failed to build accessor search tree");
4420 array->setter = fval;
4421 return ast_block_add_expr(func->blocks[0], root);
4423 if (entity) ast_delete(entity);
4424 if (index) ast_delete(index);
4425 if (value) ast_delete(value);
4426 if (root) ast_delete(root);
4432 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4434 ast_value *index = NULL;
4438 /* NOTE: checking array->expression.next rather than elemtype since
4439 * for fields elemtype is a temporary fieldtype.
4441 if (!ast_istype(array->expression.next, ast_value)) {
4442 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4446 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4448 func = fval->constval.vfunc;
4449 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4451 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4454 parseerror(parser, "failed to create locals for array accessor");
4457 vec_push(fval->expression.params, index);
4459 array->getter = fval;
4462 if (index) ast_delete(index);
4468 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4470 ast_expression *root = NULL;
4472 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4474 parseerror(parser, "failed to build accessor search tree");
4477 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4484 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4486 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4488 return parser_create_array_getter_impl(parser, array);
4491 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4492 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4500 bool variadic = false;
4501 ast_value *varparam = NULL;
4502 char *argcounter = NULL;
4504 ctx = parser_ctx(parser);
4506 /* for the sake of less code we parse-in in this function */
4507 if (!parser_next(parser)) {
4509 parseerror(parser, "expected parameter list");
4515 /* parse variables until we hit a closing paren */
4516 while (parser->tok != ')') {
4518 /* there must be commas between them */
4519 if (parser->tok != ',') {
4520 parseerror(parser, "expected comma or end of parameter list");
4523 if (!parser_next(parser)) {
4524 parseerror(parser, "expected parameter");
4530 if (parser->tok == TOKEN_DOTS) {
4531 /* '...' indicates a varargs function */
4533 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4534 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4537 if (parser->tok == TOKEN_IDENT) {
4538 argcounter = util_strdup(parser_tokval(parser));
4539 if (!parser_next(parser) || parser->tok != ')') {
4540 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4547 /* for anything else just parse a typename */
4548 param = parse_typename(parser, NULL, NULL);
4551 vec_push(params, param);
4552 if (param->expression.vtype >= TYPE_VARIANT) {
4553 char tname[1024]; /* typename is reserved in C++ */
4554 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4555 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4558 /* type-restricted varargs */
4559 if (parser->tok == TOKEN_DOTS) {
4561 varparam = vec_last(params);
4563 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4564 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4567 if (parser->tok == TOKEN_IDENT) {
4568 argcounter = util_strdup(parser_tokval(parser));
4569 if (!parser_next(parser) || parser->tok != ')') {
4570 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4578 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4582 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4583 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4586 if (!parser_next(parser)) {
4587 parseerror(parser, "parse error after typename");
4591 /* now turn 'var' into a function type */
4592 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4593 fval->expression.next = (ast_expression*)var;
4595 fval->expression.flags |= AST_FLAG_VARIADIC;
4598 var->expression.params = params;
4599 var->expression.varparam = (ast_expression*)varparam;
4600 var->argcounter = argcounter;
4609 ast_delete(varparam);
4611 for (i = 0; i < vec_size(params); ++i)
4612 ast_delete(params[i]);
4617 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4619 ast_expression *cexp;
4620 ast_value *cval, *tmp;
4623 ctx = parser_ctx(parser);
4625 if (!parser_next(parser)) {
4627 parseerror(parser, "expected array-size");
4631 if (parser->tok != ']') {
4632 cexp = parse_expression_leave(parser, true, false, false);
4634 if (!cexp || !ast_istype(cexp, ast_value)) {
4638 parseerror(parser, "expected array-size as constant positive integer");
4641 cval = (ast_value*)cexp;
4648 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4649 tmp->expression.next = (ast_expression*)var;
4653 if (cval->expression.vtype == TYPE_INTEGER)
4654 tmp->expression.count = cval->constval.vint;
4655 else if (cval->expression.vtype == TYPE_FLOAT)
4656 tmp->expression.count = cval->constval.vfloat;
4660 parseerror(parser, "array-size must be a positive integer constant");
4666 var->expression.count = -1;
4667 var->expression.flags |= AST_FLAG_ARRAY_INIT;
4670 if (parser->tok != ']') {
4672 parseerror(parser, "expected ']' after array-size");
4675 if (!parser_next(parser)) {
4677 parseerror(parser, "error after parsing array size");
4683 /* Parse a complete typename.
4684 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4685 * but when parsing variables separated by comma
4686 * 'storebase' should point to where the base-type should be kept.
4687 * The base type makes up every bit of type information which comes *before* the
4690 * NOTE: The value must either be named, have a NULL name, or a name starting
4691 * with '<'. In the first case, this will be the actual variable or type
4692 * name, in the other cases it is assumed that the name will appear
4693 * later, and an error is generated otherwise.
4695 * The following will be parsed in its entirety:
4697 * The 'basetype' in this case is 'void()'
4698 * and if there's a comma after it, say:
4700 * then the type-information 'void()' can be stored in 'storebase'
4702 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4704 ast_value *var, *tmp;
4707 const char *name = NULL;
4708 bool isfield = false;
4709 bool wasarray = false;
4710 size_t morefields = 0;
4712 ctx = parser_ctx(parser);
4714 /* types may start with a dot */
4715 if (parser->tok == '.' || parser->tok == TOKEN_DOTS) {
4717 if (parser->tok == TOKEN_DOTS)
4719 /* if we parsed a dot we need a typename now */
4720 if (!parser_next(parser)) {
4721 parseerror(parser, "expected typename for field definition");
4725 /* Further dots are handled seperately because they won't be part of the
4729 if (parser->tok == '.')
4731 else if (parser->tok == TOKEN_DOTS)
4735 if (!parser_next(parser)) {
4736 parseerror(parser, "expected typename for field definition");
4741 if (parser->tok == TOKEN_IDENT)
4742 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4743 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4744 parseerror(parser, "expected typename");
4748 /* generate the basic type value */
4749 if (cached_typedef) {
4750 var = ast_value_copy(cached_typedef);
4751 ast_value_set_name(var, "<type(from_def)>");
4753 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4755 for (; morefields; --morefields) {
4756 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4757 tmp->expression.next = (ast_expression*)var;
4761 /* do not yet turn into a field - remember:
4762 * .void() foo; is a field too
4763 * .void()() foo; is a function
4767 if (!parser_next(parser)) {
4769 parseerror(parser, "parse error after typename");
4773 /* an opening paren now starts the parameter-list of a function
4774 * this is where original-QC has parameter lists.
4775 * We allow a single parameter list here.
4776 * Much like fteqcc we don't allow `float()() x`
4778 if (parser->tok == '(') {
4779 var = parse_parameter_list(parser, var);
4784 /* store the base if requested */
4786 *storebase = ast_value_copy(var);
4788 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4789 tmp->expression.next = (ast_expression*)*storebase;
4794 /* there may be a name now */
4795 if (parser->tok == TOKEN_IDENT) {
4796 name = util_strdup(parser_tokval(parser));
4798 if (!parser_next(parser)) {
4801 parseerror(parser, "error after variable or field declaration");
4806 /* now this may be an array */
4807 if (parser->tok == '[') {
4809 var = parse_arraysize(parser, var);
4811 if (name) mem_d(name);
4816 /* This is the point where we can turn it into a field */
4818 /* turn it into a field if desired */
4819 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4820 tmp->expression.next = (ast_expression*)var;
4824 /* now there may be function parens again */
4825 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4826 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4827 if (parser->tok == '(' && wasarray)
4828 parseerror(parser, "arrays as part of a return type is not supported");
4829 while (parser->tok == '(') {
4830 var = parse_parameter_list(parser, var);
4832 if (name) mem_d(name);
4837 /* finally name it */
4839 if (!ast_value_set_name(var, name)) {
4842 parseerror(parser, "internal error: failed to set name");
4845 /* free the name, ast_value_set_name duplicates */
4852 static bool parse_typedef(parser_t *parser)
4854 ast_value *typevar, *oldtype;
4855 ast_expression *old;
4857 typevar = parse_typename(parser, NULL, NULL);
4862 /* while parsing types, the ast_value's get named '<something>' */
4863 if (!typevar->name || typevar->name[0] == '<') {
4864 parseerror(parser, "missing name in typedef");
4865 ast_delete(typevar);
4869 if ( (old = parser_find_var(parser, typevar->name)) ) {
4870 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4871 " -> `%s` has been declared here: %s:%i",
4872 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4873 ast_delete(typevar);
4877 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4878 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4879 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4880 ast_delete(typevar);
4884 vec_push(parser->_typedefs, typevar);
4885 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4887 if (parser->tok != ';') {
4888 parseerror(parser, "expected semicolon after typedef");
4891 if (!parser_next(parser)) {
4892 parseerror(parser, "parse error after typedef");
4899 static const char *cvq_to_str(int cvq) {
4901 case CV_NONE: return "none";
4902 case CV_VAR: return "`var`";
4903 case CV_CONST: return "`const`";
4904 default: return "<INVALID>";
4908 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4911 if (proto->cvq != var->cvq) {
4912 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4913 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4914 parser->tok == '='))
4916 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4917 "`%s` declared with different qualifiers: %s\n"
4918 " -> previous declaration here: %s:%i uses %s",
4919 var->name, cvq_to_str(var->cvq),
4920 ast_ctx(proto).file, ast_ctx(proto).line,
4921 cvq_to_str(proto->cvq));
4924 av = (var ->expression.flags & AST_FLAG_NORETURN);
4925 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4927 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4928 "`%s` declared with different attributes%s\n"
4929 " -> previous declaration here: %s:%i",
4930 var->name, (av ? ": noreturn" : ""),
4931 ast_ctx(proto).file, ast_ctx(proto).line,
4932 (ao ? ": noreturn" : ""));
4937 static bool create_array_accessors(parser_t *parser, ast_value *var)
4940 util_snprintf(name, sizeof(name), "%s##SET", var->name);
4941 if (!parser_create_array_setter(parser, var, name))
4943 util_snprintf(name, sizeof(name), "%s##GET", var->name);
4944 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4949 static bool parse_array(parser_t *parser, ast_value *array)
4952 if (array->initlist) {
4953 parseerror(parser, "array already initialized elsewhere");
4956 if (!parser_next(parser)) {
4957 parseerror(parser, "parse error in array initializer");
4961 while (parser->tok != '}') {
4962 ast_value *v = (ast_value*)parse_expression_leave(parser, true, false, false);
4965 if (!ast_istype(v, ast_value) || !v->hasvalue || v->cvq != CV_CONST) {
4967 parseerror(parser, "initializing element must be a compile time constant");
4970 vec_push(array->initlist, v->constval);
4971 if (v->expression.vtype == TYPE_STRING) {
4972 array->initlist[i].vstring = util_strdupe(array->initlist[i].vstring);
4976 if (parser->tok == '}')
4978 if (parser->tok != ',' || !parser_next(parser)) {
4979 parseerror(parser, "expected comma or '}' in element list");
4983 if (!parser_next(parser) || parser->tok != ';') {
4984 parseerror(parser, "expected semicolon after initializer, got %s");
4988 if (!parser_next(parser)) {
4989 parseerror(parser, "parse error after initializer");
4994 if (array->expression.flags & AST_FLAG_ARRAY_INIT) {
4995 if (array->expression.count != (size_t)-1) {
4996 parseerror(parser, "array `%s' has already been initialized with %u elements",
4997 array->name, (unsigned)array->expression.count);
4999 array->expression.count = vec_size(array->initlist);
5000 if (!create_array_accessors(parser, array))
5006 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)
5010 ast_expression *old;
5014 ast_value *basetype = NULL;
5016 bool isparam = false;
5017 bool isvector = false;
5018 bool cleanvar = true;
5019 bool wasarray = false;
5021 ast_member *me[3] = { NULL, NULL, NULL };
5023 if (!localblock && is_static)
5024 parseerror(parser, "`static` qualifier is not supported in global scope");
5026 /* get the first complete variable */
5027 var = parse_typename(parser, &basetype, cached_typedef);
5030 ast_delete(basetype);
5034 /* while parsing types, the ast_value's get named '<something>' */
5035 if (!var->name || var->name[0] == '<') {
5036 parseerror(parser, "declaration does not declare anything");
5038 ast_delete(basetype);
5046 /* Part 0: finish the type */
5047 if (parser->tok == '(') {
5048 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5049 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5050 var = parse_parameter_list(parser, var);
5056 /* we only allow 1-dimensional arrays */
5057 if (parser->tok == '[') {
5059 var = parse_arraysize(parser, var);
5065 if (parser->tok == '(' && wasarray) {
5066 parseerror(parser, "arrays as part of a return type is not supported");
5067 /* we'll still parse the type completely for now */
5069 /* for functions returning functions */
5070 while (parser->tok == '(') {
5071 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5072 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5073 var = parse_parameter_list(parser, var);
5080 var->cvq = qualifier;
5081 var->expression.flags |= qflags;
5084 * store the vstring back to var for alias and
5085 * deprecation messages.
5087 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5088 var->expression.flags & AST_FLAG_ALIAS)
5089 var->desc = vstring;
5091 if (parser_find_global(parser, var->name) && var->expression.flags & AST_FLAG_ALIAS) {
5092 parseerror(parser, "function aliases cannot be forward declared");
5099 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5100 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5101 * is then filled with the previous definition and the parameter-names replaced.
5103 if (!strcmp(var->name, "nil")) {
5104 if (OPTS_FLAG(UNTYPED_NIL)) {
5105 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5106 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5108 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5111 /* Deal with end_sys_ vars */
5113 if (!strcmp(var->name, "end_sys_globals")) {
5115 parser->crc_globals = vec_size(parser->globals);
5118 else if (!strcmp(var->name, "end_sys_fields")) {
5120 parser->crc_fields = vec_size(parser->fields);
5123 if (was_end && var->expression.vtype == TYPE_FIELD) {
5124 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5125 "global '%s' hint should not be a field",
5126 parser_tokval(parser)))
5133 if (!nofields && var->expression.vtype == TYPE_FIELD)
5135 /* deal with field declarations */
5136 old = parser_find_field(parser, var->name);
5138 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5139 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5148 parseerror(parser, "field `%s` already declared here: %s:%i",
5149 var->name, ast_ctx(old).file, ast_ctx(old).line);
5154 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5155 (old = parser_find_global(parser, var->name)))
5157 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5158 parseerror(parser, "field `%s` already declared here: %s:%i",
5159 var->name, ast_ctx(old).file, ast_ctx(old).line);
5166 /* deal with other globals */
5167 old = parser_find_global(parser, var->name);
5168 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5170 /* This is a function which had a prototype */
5171 if (!ast_istype(old, ast_value)) {
5172 parseerror(parser, "internal error: prototype is not an ast_value");
5176 proto = (ast_value*)old;
5177 proto->desc = var->desc;
5178 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5179 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5181 ast_ctx(proto).file, ast_ctx(proto).line);
5185 /* we need the new parameter-names */
5186 for (i = 0; i < vec_size(proto->expression.params); ++i)
5187 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5188 if (!parser_check_qualifiers(parser, var, proto)) {
5195 proto->expression.flags |= var->expression.flags;
5203 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5204 "global `%s` already declared here: %s:%i",
5205 var->name, ast_ctx(old).file, ast_ctx(old).line))
5210 proto = (ast_value*)old;
5211 if (!ast_istype(old, ast_value)) {
5212 parseerror(parser, "internal error: not an ast_value");
5217 if (!parser_check_qualifiers(parser, var, proto)) {
5222 proto->expression.flags |= var->expression.flags;
5226 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5227 (old = parser_find_field(parser, var->name)))
5229 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5230 parseerror(parser, "global `%s` already declared here: %s:%i",
5231 var->name, ast_ctx(old).file, ast_ctx(old).line);
5238 else /* it's not a global */
5240 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5241 if (old && !isparam) {
5242 parseerror(parser, "local `%s` already declared here: %s:%i",
5243 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5247 /* doing this here as the above is just for a single scope */
5248 old = parser_find_local(parser, var->name, 0, &isparam);
5249 if (old && isparam) {
5250 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5251 "local `%s` is shadowing a parameter", var->name))
5253 parseerror(parser, "local `%s` already declared here: %s:%i",
5254 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5258 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5260 if (ast_istype(old, ast_value))
5261 var = proto = (ast_value*)old;
5270 /* in a noref section we simply bump the usecount */
5271 if (noref || parser->noref)
5275 * Create the global/local, and deal with vector types.
5278 if (var->expression.vtype == TYPE_VECTOR)
5280 else if (var->expression.vtype == TYPE_FIELD &&
5281 var->expression.next->vtype == TYPE_VECTOR)
5285 if (!create_vector_members(var, me)) {
5292 /* deal with global variables, fields, functions */
5293 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5294 var->isfield = true;
5295 vec_push(parser->fields, (ast_expression*)var);
5296 util_htset(parser->htfields, var->name, var);
5298 for (i = 0; i < 3; ++i) {
5299 vec_push(parser->fields, (ast_expression*)me[i]);
5300 util_htset(parser->htfields, me[i]->name, me[i]);
5305 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5306 parser_addglobal(parser, var->name, (ast_expression*)var);
5308 for (i = 0; i < 3; ++i) {
5309 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5313 ast_expression *find = parser_find_global(parser, var->desc);
5316 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5320 if (!ast_compare_type((ast_expression*)var, find)) {
5324 ast_type_to_string(find, ty1, sizeof(ty1));
5325 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5327 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5334 * add alias to aliases table and to corrector
5335 * so corrections can apply for aliases as well.
5337 util_htset(parser->aliases, var->name, find);
5340 * add to corrector so corrections can work
5341 * even for aliases too.
5344 vec_last(parser->correct_variables),
5345 &vec_last(parser->correct_variables_score),
5349 /* generate aliases for vector components */
5353 util_asprintf(&buffer[0], "%s_x", var->desc);
5354 util_asprintf(&buffer[1], "%s_y", var->desc);
5355 util_asprintf(&buffer[2], "%s_z", var->desc);
5357 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5358 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5359 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5366 * add to corrector so corrections can work
5367 * even for aliases too.
5370 vec_last(parser->correct_variables),
5371 &vec_last(parser->correct_variables_score),
5375 vec_last(parser->correct_variables),
5376 &vec_last(parser->correct_variables_score),
5380 vec_last(parser->correct_variables),
5381 &vec_last(parser->correct_variables_score),
5389 /* a static adds itself to be generated like any other global
5390 * but is added to the local namespace instead
5392 char *defname = NULL;
5393 size_t prefix_len, ln;
5395 ln = strlen(parser->function->name);
5396 vec_append(defname, ln, parser->function->name);
5398 vec_append(defname, 2, "::");
5399 /* remember the length up to here */
5400 prefix_len = vec_size(defname);
5402 /* Add it to the local scope */
5403 util_htset(vec_last(parser->variables), var->name, (void*)var);
5407 vec_last(parser->correct_variables),
5408 &vec_last(parser->correct_variables_score),
5412 /* now rename the global */
5413 ln = strlen(var->name);
5414 vec_append(defname, ln, var->name);
5415 ast_value_set_name(var, defname);
5417 /* push it to the to-be-generated globals */
5418 vec_push(parser->globals, (ast_expression*)var);
5420 /* same game for the vector members */
5422 for (i = 0; i < 3; ++i) {
5423 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5427 vec_last(parser->correct_variables),
5428 &vec_last(parser->correct_variables_score),
5432 vec_shrinkto(defname, prefix_len);
5433 ln = strlen(me[i]->name);
5434 vec_append(defname, ln, me[i]->name);
5435 ast_member_set_name(me[i], defname);
5437 vec_push(parser->globals, (ast_expression*)me[i]);
5442 vec_push(localblock->locals, var);
5443 parser_addlocal(parser, var->name, (ast_expression*)var);
5445 for (i = 0; i < 3; ++i) {
5446 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5447 ast_block_collect(localblock, (ast_expression*)me[i]);
5453 me[0] = me[1] = me[2] = NULL;
5458 if (var->expression.vtype == TYPE_ARRAY) {
5459 if (var->expression.count != (size_t)-1) {
5460 if (!create_array_accessors(parser, var))
5464 else if (!localblock && !nofields &&
5465 var->expression.vtype == TYPE_FIELD &&
5466 var->expression.next->vtype == TYPE_ARRAY)
5469 ast_expression *telem;
5471 ast_value *array = (ast_value*)var->expression.next;
5473 if (!ast_istype(var->expression.next, ast_value)) {
5474 parseerror(parser, "internal error: field element type must be an ast_value");
5478 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5479 if (!parser_create_array_field_setter(parser, array, name))
5482 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5483 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5484 tfield->expression.next = telem;
5485 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5486 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5494 if (parser->tok == ';') {
5495 ast_delete(basetype);
5496 if (!parser_next(parser)) {
5497 parseerror(parser, "error after variable declaration");
5503 if (parser->tok == ',')
5507 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5510 parseerror(parser, "missing comma or semicolon while parsing variables");
5514 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5515 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5516 "initializing expression turns variable `%s` into a constant in this standard",
5523 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5524 if (parser->tok != '=') {
5525 if (!strcmp(parser_tokval(parser), "break")) {
5526 if (!parser_next(parser)) {
5527 parseerror(parser, "error parsing break definition");
5530 (void)!parsewarning(parser, WARN_BREAKDEF, "break definition ignored (suggest removing it)");
5532 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5537 if (!parser_next(parser)) {
5538 parseerror(parser, "error parsing initializer");
5542 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5543 parseerror(parser, "expected '=' before function body in this standard");
5546 if (parser->tok == '#') {
5547 ast_function *func = NULL;
5548 ast_value *number = NULL;
5554 parseerror(parser, "cannot declare builtins within functions");
5557 if (var->expression.vtype != TYPE_FUNCTION) {
5558 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5561 if (!parser_next(parser)) {
5562 parseerror(parser, "expected builtin number");
5566 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5567 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5569 parseerror(parser, "builtin number expected");
5572 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5575 parseerror(parser, "builtin number must be a compile time constant");
5578 if (number->expression.vtype == TYPE_INTEGER)
5579 builtin_num = number->constval.vint;
5580 else if (number->expression.vtype == TYPE_FLOAT)
5581 builtin_num = number->constval.vfloat;
5584 parseerror(parser, "builtin number must be an integer constant");
5589 fractional = modff(builtin_num, &integral);
5590 if (builtin_num < 0 || fractional != 0) {
5591 parseerror(parser, "builtin number must be an integer greater than zero");
5595 /* we only want the integral part anyways */
5596 builtin_num = integral;
5597 } else if (parser->tok == TOKEN_INTCONST) {
5598 builtin_num = parser_token(parser)->constval.i;
5600 parseerror(parser, "builtin number must be a compile time constant");
5604 if (var->hasvalue) {
5605 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5606 "builtin `%s` has already been defined\n"
5607 " -> previous declaration here: %s:%i",
5608 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5612 func = ast_function_new(ast_ctx(var), var->name, var);
5614 parseerror(parser, "failed to allocate function for `%s`", var->name);
5617 vec_push(parser->functions, func);
5619 func->builtin = -builtin_num-1;
5622 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5623 ? (parser->tok != ',' && parser->tok != ';')
5624 : (!parser_next(parser)))
5626 parseerror(parser, "expected comma or semicolon");
5628 ast_function_delete(func);
5629 var->constval.vfunc = NULL;
5633 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
5636 /* Note that fteqcc and most others don't even *have*
5637 * local arrays, so this is not a high priority.
5639 parseerror(parser, "TODO: initializers for local arrays");
5643 var->hasvalue = true;
5644 if (!parse_array(parser, var))
5647 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
5650 parseerror(parser, "cannot declare functions within functions");
5655 ast_ctx(proto) = parser_ctx(parser);
5657 if (!parse_function_body(parser, var))
5659 ast_delete(basetype);
5660 for (i = 0; i < vec_size(parser->gotos); ++i)
5661 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5662 vec_free(parser->gotos);
5663 vec_free(parser->labels);
5666 ast_expression *cexp;
5669 cexp = parse_expression_leave(parser, true, false, false);
5674 cval = (ast_value*)cexp;
5675 if (cval != parser->nil &&
5676 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5679 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5683 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5684 qualifier != CV_VAR)
5686 var->cvq = CV_CONST;
5688 if (cval == parser->nil)
5689 var->expression.flags |= AST_FLAG_INITIALIZED;
5692 var->hasvalue = true;
5693 if (cval->expression.vtype == TYPE_STRING)
5694 var->constval.vstring = parser_strdup(cval->constval.vstring);
5695 else if (cval->expression.vtype == TYPE_FIELD)
5696 var->constval.vfield = cval;
5698 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5704 shunt sy = { NULL, NULL, NULL, NULL };
5707 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5708 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5709 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5710 if (!parser_sy_apply_operator(parser, &sy))
5713 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5714 parseerror(parser, "internal error: leaked operands");
5715 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5726 if (parser->tok == ',') {
5727 if (!parser_next(parser)) {
5728 parseerror(parser, "expected another variable");
5732 if (parser->tok != TOKEN_IDENT) {
5733 parseerror(parser, "expected another variable");
5736 var = ast_value_copy(basetype);
5738 ast_value_set_name(var, parser_tokval(parser));
5739 if (!parser_next(parser)) {
5740 parseerror(parser, "error parsing variable declaration");
5746 if (parser->tok != ';') {
5747 parseerror(parser, "missing semicolon after variables");
5751 if (!parser_next(parser)) {
5752 parseerror(parser, "parse error after variable declaration");
5756 ast_delete(basetype);
5760 if (cleanvar && var)
5762 ast_delete(basetype);
5766 ast_delete(basetype);
5767 if (cleanvar && var)
5769 if (me[0]) ast_member_delete(me[0]);
5770 if (me[1]) ast_member_delete(me[1]);
5771 if (me[2]) ast_member_delete(me[2]);
5775 static bool parser_global_statement(parser_t *parser)
5779 bool is_static = false;
5780 uint32_t qflags = 0;
5781 ast_value *istype = NULL;
5782 char *vstring = NULL;
5784 if (parser->tok == TOKEN_IDENT)
5785 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5787 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.' || parser->tok == TOKEN_DOTS)
5789 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5791 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5793 if (cvq == CV_WRONG)
5795 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5797 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5799 return parse_enum(parser);
5801 else if (parser->tok == TOKEN_KEYWORD)
5803 if (!strcmp(parser_tokval(parser), "typedef")) {
5804 if (!parser_next(parser)) {
5805 parseerror(parser, "expected type definition after 'typedef'");
5808 return parse_typedef(parser);
5810 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5813 else if (parser->tok == '#')
5815 return parse_pragma(parser);
5817 else if (parser->tok == '$')
5819 if (!parser_next(parser)) {
5820 parseerror(parser, "parse error");
5826 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
5832 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5834 return util_crc16(old, str, strlen(str));
5837 static void progdefs_crc_file(const char *str)
5839 /* write to progdefs.h here */
5843 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5845 old = progdefs_crc_sum(old, str);
5846 progdefs_crc_file(str);
5850 static void generate_checksum(parser_t *parser, ir_builder *ir)
5852 uint16_t crc = 0xFFFF;
5856 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5857 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5859 progdefs_crc_file("\tint\tpad;\n");
5860 progdefs_crc_file("\tint\tofs_return[3];\n");
5861 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5862 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5863 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5864 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5865 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5866 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5867 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5868 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5870 for (i = 0; i < parser->crc_globals; ++i) {
5871 if (!ast_istype(parser->globals[i], ast_value))
5873 value = (ast_value*)(parser->globals[i]);
5874 switch (value->expression.vtype) {
5875 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5876 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5877 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5878 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5880 crc = progdefs_crc_both(crc, "\tint\t");
5883 crc = progdefs_crc_both(crc, value->name);
5884 crc = progdefs_crc_both(crc, ";\n");
5886 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5887 for (i = 0; i < parser->crc_fields; ++i) {
5888 if (!ast_istype(parser->fields[i], ast_value))
5890 value = (ast_value*)(parser->fields[i]);
5891 switch (value->expression.next->vtype) {
5892 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5893 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5894 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5895 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5897 crc = progdefs_crc_both(crc, "\tint\t");
5900 crc = progdefs_crc_both(crc, value->name);
5901 crc = progdefs_crc_both(crc, ";\n");
5903 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5904 ir->code->crc = crc;
5907 parser_t *parser_create()
5910 lex_ctx_t empty_ctx;
5913 parser = (parser_t*)mem_a(sizeof(parser_t));
5917 memset(parser, 0, sizeof(*parser));
5919 for (i = 0; i < operator_count; ++i) {
5920 if (operators[i].id == opid1('=')) {
5921 parser->assign_op = operators+i;
5925 if (!parser->assign_op) {
5926 con_err("internal error: initializing parser: failed to find assign operator\n");
5931 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5932 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5933 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5934 vec_push(parser->_blocktypedefs, 0);
5936 parser->aliases = util_htnew(PARSER_HT_SIZE);
5939 vec_push(parser->correct_variables, correct_trie_new());
5940 vec_push(parser->correct_variables_score, NULL);
5942 empty_ctx.file = "<internal>";
5944 empty_ctx.column = 0;
5945 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
5946 parser->nil->cvq = CV_CONST;
5947 if (OPTS_FLAG(UNTYPED_NIL))
5948 util_htset(parser->htglobals, "nil", (void*)parser->nil);
5950 parser->max_param_count = 1;
5952 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
5953 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
5954 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
5956 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
5957 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
5958 parser->reserved_version->cvq = CV_CONST;
5959 parser->reserved_version->hasvalue = true;
5960 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
5961 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
5963 parser->reserved_version = NULL;
5966 parser->fold = fold_init (parser);
5967 parser->intrin = intrin_init(parser);
5971 static bool parser_compile(parser_t *parser)
5973 /* initial lexer/parser state */
5974 parser->lex->flags.noops = true;
5976 if (parser_next(parser))
5978 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
5980 if (!parser_global_statement(parser)) {
5981 if (parser->tok == TOKEN_EOF)
5982 parseerror(parser, "unexpected end of file");
5983 else if (compile_errors)
5984 parseerror(parser, "there have been errors, bailing out");
5985 lex_close(parser->lex);
5991 parseerror(parser, "parse error");
5992 lex_close(parser->lex);
5997 lex_close(parser->lex);
6000 return !compile_errors;
6003 bool parser_compile_file(parser_t *parser, const char *filename)
6005 parser->lex = lex_open(filename);
6007 con_err("failed to open file \"%s\"\n", filename);
6010 return parser_compile(parser);
6013 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
6015 parser->lex = lex_open_string(str, len, name);
6017 con_err("failed to create lexer for string \"%s\"\n", name);
6020 return parser_compile(parser);
6023 static void parser_remove_ast(parser_t *parser)
6026 if (parser->ast_cleaned)
6028 parser->ast_cleaned = true;
6029 for (i = 0; i < vec_size(parser->accessors); ++i) {
6030 ast_delete(parser->accessors[i]->constval.vfunc);
6031 parser->accessors[i]->constval.vfunc = NULL;
6032 ast_delete(parser->accessors[i]);
6034 for (i = 0; i < vec_size(parser->functions); ++i) {
6035 ast_delete(parser->functions[i]);
6037 for (i = 0; i < vec_size(parser->fields); ++i) {
6038 ast_delete(parser->fields[i]);
6040 for (i = 0; i < vec_size(parser->globals); ++i) {
6041 ast_delete(parser->globals[i]);
6043 vec_free(parser->accessors);
6044 vec_free(parser->functions);
6045 vec_free(parser->globals);
6046 vec_free(parser->fields);
6048 for (i = 0; i < vec_size(parser->variables); ++i)
6049 util_htdel(parser->variables[i]);
6050 vec_free(parser->variables);
6051 vec_free(parser->_blocklocals);
6052 vec_free(parser->_locals);
6055 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
6056 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
6058 vec_free(parser->correct_variables);
6059 vec_free(parser->correct_variables_score);
6061 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6062 ast_delete(parser->_typedefs[i]);
6063 vec_free(parser->_typedefs);
6064 for (i = 0; i < vec_size(parser->typedefs); ++i)
6065 util_htdel(parser->typedefs[i]);
6066 vec_free(parser->typedefs);
6067 vec_free(parser->_blocktypedefs);
6069 vec_free(parser->_block_ctx);
6071 vec_free(parser->labels);
6072 vec_free(parser->gotos);
6073 vec_free(parser->breaks);
6074 vec_free(parser->continues);
6076 ast_value_delete(parser->nil);
6078 ast_value_delete(parser->const_vec[0]);
6079 ast_value_delete(parser->const_vec[1]);
6080 ast_value_delete(parser->const_vec[2]);
6082 if (parser->reserved_version)
6083 ast_value_delete(parser->reserved_version);
6085 util_htdel(parser->aliases);
6086 fold_cleanup(parser->fold);
6087 intrin_cleanup(parser->intrin);
6090 void parser_cleanup(parser_t *parser)
6092 parser_remove_ast(parser);
6096 bool parser_finish(parser_t *parser, const char *output)
6102 if (compile_errors) {
6103 con_out("*** there were compile errors\n");
6107 ir = ir_builder_new("gmqcc_out");
6109 con_out("failed to allocate builder\n");
6113 for (i = 0; i < vec_size(parser->fields); ++i) {
6116 if (!ast_istype(parser->fields[i], ast_value))
6118 field = (ast_value*)parser->fields[i];
6119 hasvalue = field->hasvalue;
6120 field->hasvalue = false;
6121 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6122 con_out("failed to generate field %s\n", field->name);
6123 ir_builder_delete(ir);
6128 ast_expression *subtype;
6129 field->hasvalue = true;
6130 subtype = field->expression.next;
6131 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6132 if (subtype->vtype == TYPE_FIELD)
6133 ifld->fieldtype = subtype->next->vtype;
6134 else if (subtype->vtype == TYPE_FUNCTION)
6135 ifld->outtype = subtype->next->vtype;
6136 (void)!ir_value_set_field(field->ir_v, ifld);
6139 for (i = 0; i < vec_size(parser->globals); ++i) {
6141 if (!ast_istype(parser->globals[i], ast_value))
6143 asvalue = (ast_value*)(parser->globals[i]);
6144 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6145 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6146 "unused global: `%s`", asvalue->name);
6148 if (!ast_global_codegen(asvalue, ir, false)) {
6149 con_out("failed to generate global %s\n", asvalue->name);
6150 ir_builder_delete(ir);
6154 /* Build function vararg accessor ast tree now before generating
6155 * immediates, because the accessors may add new immediates
6157 for (i = 0; i < vec_size(parser->functions); ++i) {
6158 ast_function *f = parser->functions[i];
6160 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6161 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6162 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6163 con_out("failed to generate vararg setter for %s\n", f->name);
6164 ir_builder_delete(ir);
6167 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6168 con_out("failed to generate vararg getter for %s\n", f->name);
6169 ir_builder_delete(ir);
6173 ast_delete(f->varargs);
6178 /* Now we can generate immediates */
6179 if (!fold_generate(parser->fold, ir))
6182 for (i = 0; i < vec_size(parser->globals); ++i) {
6184 if (!ast_istype(parser->globals[i], ast_value))
6186 asvalue = (ast_value*)(parser->globals[i]);
6187 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6189 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6190 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6191 "uninitialized constant: `%s`",
6193 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6194 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6195 "uninitialized global: `%s`",
6198 if (!ast_generate_accessors(asvalue, ir)) {
6199 ir_builder_delete(ir);
6203 for (i = 0; i < vec_size(parser->fields); ++i) {
6205 asvalue = (ast_value*)(parser->fields[i]->next);
6207 if (!ast_istype((ast_expression*)asvalue, ast_value))
6209 if (asvalue->expression.vtype != TYPE_ARRAY)
6211 if (!ast_generate_accessors(asvalue, ir)) {
6212 ir_builder_delete(ir);
6216 if (parser->reserved_version &&
6217 !ast_global_codegen(parser->reserved_version, ir, false))
6219 con_out("failed to generate reserved::version");
6220 ir_builder_delete(ir);
6223 for (i = 0; i < vec_size(parser->functions); ++i) {
6224 ast_function *f = parser->functions[i];
6225 if (!ast_function_codegen(f, ir)) {
6226 con_out("failed to generate function %s\n", f->name);
6227 ir_builder_delete(ir);
6232 generate_checksum(parser, ir);
6234 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6235 ir_builder_dump(ir, con_out);
6236 for (i = 0; i < vec_size(parser->functions); ++i) {
6237 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6238 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6239 ir_builder_delete(ir);
6243 parser_remove_ast(parser);
6245 if (compile_Werrors) {
6246 con_out("*** there were warnings treated as errors\n");
6247 compile_show_werrors();
6252 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6253 ir_builder_dump(ir, con_out);
6255 if (!ir_builder_generate(ir, output)) {
6256 con_out("*** failed to generate output file\n");
6257 ir_builder_delete(ir);
6261 ir_builder_delete(ir);