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
28 #define PARSER_HT_LOCALS 2
29 #define PARSER_HT_SIZE 512
30 #define TYPEDEF_HT_SIZE 512
32 static void parser_enterblock(parser_t *parser);
33 static bool parser_leaveblock(parser_t *parser);
34 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
35 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
36 static bool parse_typedef(parser_t *parser);
37 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);
38 static ast_block* parse_block(parser_t *parser);
39 static bool parse_block_into(parser_t *parser, ast_block *block);
40 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
41 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
42 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
43 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
44 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname);
45 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname);
46 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
48 static void parseerror(parser_t *parser, const char *fmt, ...)
52 vcompile_error(parser->lex->tok.ctx, fmt, ap);
56 /* returns true if it counts as an error */
57 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
62 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
67 /**********************************************************************
71 static bool parser_next(parser_t *parser)
73 /* lex_do kills the previous token */
74 parser->tok = lex_do(parser->lex);
75 if (parser->tok == TOKEN_EOF)
77 if (parser->tok >= TOKEN_ERROR) {
78 parseerror(parser, "lex error");
84 #define parser_tokval(p) ((p)->lex->tok.value)
85 #define parser_token(p) (&((p)->lex->tok))
87 char *parser_strdup(const char *str)
90 /* actually dup empty strings */
91 char *out = (char*)mem_a(1);
95 return util_strdup(str);
98 static ast_expression* parser_find_field(parser_t *parser, const char *name)
100 return ( ast_expression*)util_htget(parser->htfields, name);
103 static ast_expression* parser_find_label(parser_t *parser, const char *name)
106 for(i = 0; i < vec_size(parser->labels); i++)
107 if (!strcmp(parser->labels[i]->name, name))
108 return (ast_expression*)parser->labels[i];
112 ast_expression* parser_find_global(parser_t *parser, const char *name)
114 ast_expression *var = (ast_expression*)util_htget(parser->aliases, parser_tokval(parser));
117 return (ast_expression*)util_htget(parser->htglobals, name);
120 static ast_expression* parser_find_param(parser_t *parser, const char *name)
124 if (!parser->function)
126 fun = parser->function->vtype;
127 for (i = 0; i < vec_size(fun->expression.params); ++i) {
128 if (!strcmp(fun->expression.params[i]->name, name))
129 return (ast_expression*)(fun->expression.params[i]);
134 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
139 hash = util_hthash(parser->htglobals, name);
142 for (i = vec_size(parser->variables); i > upto;) {
144 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
148 return parser_find_param(parser, name);
151 static ast_expression* parser_find_var(parser_t *parser, const char *name)
155 v = parser_find_local(parser, name, 0, &dummy);
156 if (!v) v = parser_find_global(parser, name);
160 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
164 hash = util_hthash(parser->typedefs[0], name);
166 for (i = vec_size(parser->typedefs); i > upto;) {
168 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
176 size_t etype; /* 0 = expression, others are operators */
180 ast_block *block; /* for commas and function calls */
199 static sy_elem syexp(lex_ctx_t ctx, ast_expression *v) {
210 static sy_elem syblock(lex_ctx_t ctx, ast_block *v) {
214 e.out = (ast_expression*)v;
221 static sy_elem syop(lex_ctx_t ctx, const oper_info *op) {
223 e.etype = 1 + (op - operators);
232 static sy_elem syparen(lex_ctx_t ctx, size_t off) {
243 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
244 * so we need to rotate it to become ent.(foo[n]).
246 static bool rotate_entfield_array_index_nodes(ast_expression **out)
248 ast_array_index *index, *oldindex;
249 ast_entfield *entfield;
253 ast_expression *entity;
255 lex_ctx_t ctx = ast_ctx(*out);
257 if (!ast_istype(*out, ast_array_index))
259 index = (ast_array_index*)*out;
261 if (!ast_istype(index->array, ast_entfield))
263 entfield = (ast_entfield*)index->array;
265 if (!ast_istype(entfield->field, ast_value))
267 field = (ast_value*)entfield->field;
270 entity = entfield->entity;
274 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
275 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
276 *out = (ast_expression*)entfield;
278 oldindex->array = NULL;
279 oldindex->index = NULL;
280 ast_delete(oldindex);
285 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
289 ast_expression *out = NULL;
290 ast_expression *exprs[3];
291 ast_block *blocks[3];
292 ast_value *asvalue[3];
293 ast_binstore *asbinstore;
294 size_t i, assignop, addop, subop;
295 qcint_t generated_op = 0;
300 if (!vec_size(sy->ops)) {
301 parseerror(parser, "internal error: missing operator");
305 if (vec_last(sy->ops).isparen) {
306 parseerror(parser, "unmatched parenthesis");
310 op = &operators[vec_last(sy->ops).etype - 1];
311 ctx = vec_last(sy->ops).ctx;
313 if (vec_size(sy->out) < op->operands) {
314 if (op->flags & OP_PREFIX)
315 compile_error(ctx, "expected expression after unary operator `%s`", op->op, (int)op->id);
316 else /* this should have errored previously already */
317 compile_error(ctx, "expected expression after operator `%s`", op->op, (int)op->id);
321 vec_shrinkby(sy->ops, 1);
323 /* op(:?) has no input and no output */
327 vec_shrinkby(sy->out, op->operands);
328 for (i = 0; i < op->operands; ++i) {
329 exprs[i] = sy->out[vec_size(sy->out)+i].out;
330 blocks[i] = sy->out[vec_size(sy->out)+i].block;
331 asvalue[i] = (ast_value*)exprs[i];
333 if (exprs[i]->vtype == TYPE_NOEXPR &&
334 !(i != 0 && op->id == opid2('?',':')) &&
335 !(i == 1 && op->id == opid1('.')))
337 if (ast_istype(exprs[i], ast_label))
338 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
340 compile_error(ast_ctx(exprs[i]), "not an expression");
341 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
345 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
346 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
350 #define NotSameType(T) \
351 (exprs[0]->vtype != exprs[1]->vtype || \
352 exprs[0]->vtype != T)
356 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
360 if (exprs[0]->vtype == TYPE_VECTOR &&
361 exprs[1]->vtype == TYPE_NOEXPR)
363 if (exprs[1] == (ast_expression*)parser->const_vec[0])
364 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
365 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
366 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
367 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
368 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
370 compile_error(ctx, "access to invalid vector component");
374 else if (exprs[0]->vtype == TYPE_ENTITY) {
375 if (exprs[1]->vtype != TYPE_FIELD) {
376 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
379 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
381 else if (exprs[0]->vtype == TYPE_VECTOR) {
382 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
386 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
392 if (exprs[0]->vtype != TYPE_ARRAY &&
393 !(exprs[0]->vtype == TYPE_FIELD &&
394 exprs[0]->next->vtype == TYPE_ARRAY))
396 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
397 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
400 if (exprs[1]->vtype != TYPE_FLOAT) {
401 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
402 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
405 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
406 if (rotate_entfield_array_index_nodes(&out))
409 /* This is not broken in fteqcc anymore */
410 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
411 /* this error doesn't need to make us bail out */
412 (void)!parsewarning(parser, WARN_EXTENSIONS,
413 "accessing array-field members of an entity without parenthesis\n"
414 " -> this is an extension from -std=gmqcc");
421 if (vec_size(sy->paren) && vec_last(sy->paren) == PAREN_FUNC) {
422 vec_push(sy->out, syexp(ctx, exprs[0]));
423 vec_push(sy->out, syexp(ctx, exprs[1]));
424 vec_last(sy->argc)++;
428 if (!ast_block_add_expr(blocks[0], exprs[1]))
431 blocks[0] = ast_block_new(ctx);
432 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
433 !ast_block_add_expr(blocks[0], exprs[1]))
438 ast_block_set_type(blocks[0], exprs[1]);
440 vec_push(sy->out, syblock(ctx, blocks[0]));
447 if (!(out = fold_op(parser->fold, op, exprs))) {
448 switch (exprs[0]->vtype) {
450 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
451 (ast_expression*)parser->fold->imm_float[0],
455 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
456 (ast_expression*)parser->fold->imm_vector[0],
460 compile_error(ctx, "invalid types used in expression: cannot negate type %s",
461 type_name[exprs[0]->vtype]);
468 if (!(out = fold_op(parser->fold, op, exprs))) {
469 switch (exprs[0]->vtype) {
471 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
474 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
477 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
478 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
480 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
482 /* we don't constant-fold NOT for these types */
484 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
487 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
490 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
491 type_name[exprs[0]->vtype]);
498 if (exprs[0]->vtype != exprs[1]->vtype ||
499 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
501 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
502 type_name[exprs[0]->vtype],
503 type_name[exprs[1]->vtype]);
506 if (!(out = fold_op(parser->fold, op, exprs))) {
507 switch (exprs[0]->vtype) {
509 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
512 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
515 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
516 type_name[exprs[0]->vtype],
517 type_name[exprs[1]->vtype]);
523 if (exprs[0]->vtype != exprs[1]->vtype ||
524 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT))
526 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
527 type_name[exprs[1]->vtype],
528 type_name[exprs[0]->vtype]);
531 if (!(out = fold_op(parser->fold, op, exprs))) {
532 switch (exprs[0]->vtype) {
534 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
537 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
540 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
541 type_name[exprs[1]->vtype],
542 type_name[exprs[0]->vtype]);
548 if (exprs[0]->vtype != exprs[1]->vtype &&
549 !(exprs[0]->vtype == TYPE_VECTOR &&
550 exprs[1]->vtype == TYPE_FLOAT) &&
551 !(exprs[1]->vtype == TYPE_VECTOR &&
552 exprs[0]->vtype == TYPE_FLOAT)
555 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
556 type_name[exprs[1]->vtype],
557 type_name[exprs[0]->vtype]);
560 if (!(out = fold_op(parser->fold, op, exprs))) {
561 switch (exprs[0]->vtype) {
563 if (exprs[1]->vtype == TYPE_VECTOR)
564 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
566 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
569 if (exprs[1]->vtype == TYPE_FLOAT)
570 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
572 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
575 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
576 type_name[exprs[1]->vtype],
577 type_name[exprs[0]->vtype]);
584 if (exprs[1]->vtype != TYPE_FLOAT) {
585 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
586 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
587 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
590 if (!(out = fold_op(parser->fold, op, exprs))) {
591 if (exprs[0]->vtype == TYPE_FLOAT)
592 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
594 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
595 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
596 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
603 if (NotSameType(TYPE_FLOAT)) {
604 compile_error(ctx, "invalid types used in expression: cannot perform modulo operation between types %s and %s",
605 type_name[exprs[0]->vtype],
606 type_name[exprs[1]->vtype]);
608 } else if (!(out = fold_op(parser->fold, op, exprs))) {
609 /* generate a call to __builtin_mod */
610 ast_expression *mod = intrin_func(parser->intrin, "mod");
611 ast_call *call = NULL;
612 if (!mod) return false; /* can return null for missing floor */
614 call = ast_call_new(parser_ctx(parser), mod);
615 vec_push(call->params, exprs[0]);
616 vec_push(call->params, exprs[1]);
618 out = (ast_expression*)call;
623 compile_error(ctx, "%= is unimplemented");
629 if ( !(exprs[0]->vtype == TYPE_FLOAT && exprs[1]->vtype == TYPE_FLOAT) &&
630 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_FLOAT) &&
631 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_VECTOR))
633 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
634 type_name[exprs[0]->vtype],
635 type_name[exprs[1]->vtype]);
639 if (!(out = fold_op(parser->fold, op, exprs))) {
641 * IF the first expression is float, the following will be too
642 * since scalar ^ vector is not allowed.
644 if (exprs[0]->vtype == TYPE_FLOAT) {
645 out = (ast_expression*)ast_binary_new(ctx,
646 (op->id == opid1('^') ? VINSTR_BITXOR : op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
650 * The first is a vector: vector is allowed to bitop with vector and
651 * with scalar, branch here for the second operand.
653 if (exprs[1]->vtype == TYPE_VECTOR) {
655 * Bitop all the values of the vector components against the
656 * vectors components in question.
658 out = (ast_expression*)ast_binary_new(ctx,
659 (op->id == opid1('^') ? VINSTR_BITXOR_V : op->id == opid1('|') ? VINSTR_BITOR_V : VINSTR_BITAND_V),
662 out = (ast_expression*)ast_binary_new(ctx,
663 (op->id == opid1('^') ? VINSTR_BITXOR_VF : op->id == opid1('|') ? VINSTR_BITOR_VF : VINSTR_BITAND_VF),
672 case opid3('<','<','='):
673 case opid3('>','>','='):
674 if(!(out = fold_op(parser->fold, op, exprs))) {
675 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
681 generated_op += 1; /* INSTR_OR */
683 generated_op += INSTR_AND;
684 if (!(out = fold_op(parser->fold, op, exprs))) {
685 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
686 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
687 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
688 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
691 for (i = 0; i < 2; ++i) {
692 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->vtype == TYPE_VECTOR) {
693 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
695 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
697 exprs[i] = out; out = NULL;
698 if (OPTS_FLAG(PERL_LOGIC)) {
699 /* here we want to keep the right expressions' type */
703 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->vtype == TYPE_STRING) {
704 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
706 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
708 exprs[i] = out; out = NULL;
709 if (OPTS_FLAG(PERL_LOGIC)) {
710 /* here we want to keep the right expressions' type */
715 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
720 if (vec_last(sy->paren) != PAREN_TERNARY2) {
721 compile_error(ctx, "mismatched parenthesis/ternary");
725 if (!ast_compare_type(exprs[1], exprs[2])) {
726 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
727 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
728 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
731 if (!(out = fold_op(parser->fold, op, exprs)))
732 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
735 case opid2('*', '*'):
736 if (NotSameType(TYPE_FLOAT)) {
737 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
738 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
739 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
744 if (!(out = fold_op(parser->fold, op, exprs))) {
745 ast_call *gencall = ast_call_new(parser_ctx(parser), intrin_func(parser->intrin, "pow"));
746 vec_push(gencall->params, exprs[0]);
747 vec_push(gencall->params, exprs[1]);
748 out = (ast_expression*)gencall;
752 case opid3('<','=','>'): /* -1, 0, or 1 */
753 if (NotSameType(TYPE_FLOAT)) {
754 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
755 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
756 compile_error(ctx, "invalid types used in comparision: %s and %s",
762 if (!(out = fold_op(parser->fold, op, exprs))) {
763 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
765 eq->refs = AST_REF_NONE;
768 out = (ast_expression*)ast_ternary_new(ctx,
769 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
771 (ast_expression*)parser->fold->imm_float[2],
774 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
776 (ast_expression*)parser->fold->imm_float[0],
779 (ast_expression*)parser->fold->imm_float[1]
789 generated_op += 1; /* INSTR_GT */
791 generated_op += 1; /* INSTR_LT */
792 case opid2('>', '='):
793 generated_op += 1; /* INSTR_GE */
794 case opid2('<', '='):
795 generated_op += INSTR_LE;
796 if (NotSameType(TYPE_FLOAT)) {
797 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
798 type_name[exprs[0]->vtype],
799 type_name[exprs[1]->vtype]);
802 if (!(out = fold_op(parser->fold, op, exprs)))
803 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
805 case opid2('!', '='):
806 if (exprs[0]->vtype != exprs[1]->vtype) {
807 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
808 type_name[exprs[0]->vtype],
809 type_name[exprs[1]->vtype]);
812 if (!(out = fold_op(parser->fold, op, exprs)))
813 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->vtype], exprs[0], exprs[1]);
815 case opid2('=', '='):
816 if (exprs[0]->vtype != exprs[1]->vtype) {
817 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
818 type_name[exprs[0]->vtype],
819 type_name[exprs[1]->vtype]);
822 if (!(out = fold_op(parser->fold, op, exprs)))
823 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->vtype], exprs[0], exprs[1]);
827 if (ast_istype(exprs[0], ast_entfield)) {
828 ast_expression *field = ((ast_entfield*)exprs[0])->field;
829 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
830 exprs[0]->vtype == TYPE_FIELD &&
831 exprs[0]->next->vtype == TYPE_VECTOR)
833 assignop = type_storep_instr[TYPE_VECTOR];
836 assignop = type_storep_instr[exprs[0]->vtype];
837 if (assignop == VINSTR_END || !ast_compare_type(field->next, exprs[1]))
839 ast_type_to_string(field->next, ty1, sizeof(ty1));
840 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
841 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
842 field->next->vtype == TYPE_FUNCTION &&
843 exprs[1]->vtype == TYPE_FUNCTION)
845 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
846 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
849 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
854 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
855 exprs[0]->vtype == TYPE_FIELD &&
856 exprs[0]->next->vtype == TYPE_VECTOR)
858 assignop = type_store_instr[TYPE_VECTOR];
861 assignop = type_store_instr[exprs[0]->vtype];
864 if (assignop == VINSTR_END) {
865 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
866 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
867 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
869 else if (!ast_compare_type(exprs[0], exprs[1]))
871 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
872 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
873 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
874 exprs[0]->vtype == TYPE_FUNCTION &&
875 exprs[1]->vtype == TYPE_FUNCTION)
877 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
878 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
881 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
884 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
885 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
887 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
889 case opid3('+','+','P'):
890 case opid3('-','-','P'):
892 if (exprs[0]->vtype != TYPE_FLOAT) {
893 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
894 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
897 if (op->id == opid3('+','+','P'))
901 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
902 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
904 if (ast_istype(exprs[0], ast_entfield)) {
905 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
907 (ast_expression*)parser->fold->imm_float[1]);
909 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
911 (ast_expression*)parser->fold->imm_float[1]);
914 case opid3('S','+','+'):
915 case opid3('S','-','-'):
917 if (exprs[0]->vtype != TYPE_FLOAT) {
918 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
919 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
922 if (op->id == opid3('S','+','+')) {
929 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
930 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
932 if (ast_istype(exprs[0], ast_entfield)) {
933 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
935 (ast_expression*)parser->fold->imm_float[1]);
937 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
939 (ast_expression*)parser->fold->imm_float[1]);
943 out = (ast_expression*)ast_binary_new(ctx, subop,
945 (ast_expression*)parser->fold->imm_float[1]);
949 if (exprs[0]->vtype != exprs[1]->vtype ||
950 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
952 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
953 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
954 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
958 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
959 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
961 if (ast_istype(exprs[0], ast_entfield))
962 assignop = type_storep_instr[exprs[0]->vtype];
964 assignop = type_store_instr[exprs[0]->vtype];
965 switch (exprs[0]->vtype) {
967 out = (ast_expression*)ast_binstore_new(ctx, assignop,
968 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
972 out = (ast_expression*)ast_binstore_new(ctx, assignop,
973 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
977 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
978 type_name[exprs[0]->vtype],
979 type_name[exprs[1]->vtype]);
985 if (exprs[1]->vtype != TYPE_FLOAT ||
986 !(exprs[0]->vtype == TYPE_FLOAT ||
987 exprs[0]->vtype == TYPE_VECTOR))
989 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
990 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
991 compile_error(ctx, "invalid types used in expression: %s and %s",
995 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
996 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
998 if (ast_istype(exprs[0], ast_entfield))
999 assignop = type_storep_instr[exprs[0]->vtype];
1001 assignop = type_store_instr[exprs[0]->vtype];
1002 switch (exprs[0]->vtype) {
1004 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1005 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1006 exprs[0], exprs[1]);
1009 if (op->id == opid2('*','=')) {
1010 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1011 exprs[0], exprs[1]);
1013 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1014 (ast_expression*)parser->fold->imm_float[1],
1017 compile_error(ctx, "internal error: failed to generate division");
1020 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1025 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1026 type_name[exprs[0]->vtype],
1027 type_name[exprs[1]->vtype]);
1031 case opid2('&','='):
1032 case opid2('|','='):
1033 case opid2('^','='):
1034 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1035 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1036 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1037 compile_error(ctx, "invalid types used in expression: %s and %s",
1041 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1042 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1044 if (ast_istype(exprs[0], ast_entfield))
1045 assignop = type_storep_instr[exprs[0]->vtype];
1047 assignop = type_store_instr[exprs[0]->vtype];
1048 if (exprs[0]->vtype == TYPE_FLOAT)
1049 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1050 (op->id == opid2('^','=') ? VINSTR_BITXOR : op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1051 exprs[0], exprs[1]);
1053 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1054 (op->id == opid2('^','=') ? VINSTR_BITXOR_V : op->id == opid2('&','=') ? VINSTR_BITAND_V : VINSTR_BITOR_V),
1055 exprs[0], exprs[1]);
1057 case opid3('&','~','='):
1058 /* This is like: a &= ~(b);
1059 * But QC has no bitwise-not, so we implement it as
1062 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1063 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1064 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1065 compile_error(ctx, "invalid types used in expression: %s and %s",
1069 if (ast_istype(exprs[0], ast_entfield))
1070 assignop = type_storep_instr[exprs[0]->vtype];
1072 assignop = type_store_instr[exprs[0]->vtype];
1073 if (exprs[0]->vtype == TYPE_FLOAT)
1074 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1076 out = (ast_expression*)ast_binary_new(ctx, VINSTR_BITAND_V, exprs[0], exprs[1]);
1079 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1080 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1082 if (exprs[0]->vtype == TYPE_FLOAT)
1083 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1085 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_V, exprs[0], out);
1086 asbinstore->keep_dest = true;
1087 out = (ast_expression*)asbinstore;
1090 case opid2('~', 'P'):
1091 if (exprs[0]->vtype != TYPE_FLOAT && exprs[0]->vtype != TYPE_VECTOR) {
1092 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1093 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1096 if (!(out = fold_op(parser->fold, op, exprs))) {
1097 if (exprs[0]->vtype == TYPE_FLOAT) {
1098 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, (ast_expression*)parser->fold->imm_float[2], exprs[0]);
1100 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, (ast_expression*)parser->fold->imm_vector[1], exprs[0]);
1107 compile_error(ctx, "failed to apply operator %s", op->op);
1111 vec_push(sy->out, syexp(ctx, out));
1115 static bool parser_close_call(parser_t *parser, shunt *sy)
1117 /* was a function call */
1118 ast_expression *fun;
1119 ast_value *funval = NULL;
1123 size_t paramcount, i;
1126 fid = vec_last(sy->ops).off;
1127 vec_shrinkby(sy->ops, 1);
1129 /* out[fid] is the function
1130 * everything above is parameters...
1132 if (!vec_size(sy->argc)) {
1133 parseerror(parser, "internal error: no argument counter available");
1137 paramcount = vec_last(sy->argc);
1140 if (vec_size(sy->out) < fid) {
1141 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1142 (unsigned long)vec_size(sy->out),
1144 (unsigned long)paramcount);
1149 * TODO handle this at the intrinsic level with an ast_intrinsic
1152 if ((fun = sy->out[fid].out) == intrin_debug_typestring(parser->intrin)) {
1154 if (fid+2 != vec_size(sy->out) ||
1155 vec_last(sy->out).block)
1157 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1160 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1161 ast_unref(vec_last(sy->out).out);
1162 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1163 (ast_expression*)fold_constgen_string(parser->fold, ty, false));
1164 vec_shrinkby(sy->out, 1);
1169 * Now we need to determine if the function that is being called is
1170 * an intrinsic so we can evaluate if the arguments to it are constant
1171 * and than fruitfully fold them.
1173 #define fold_can_1(X) \
1174 (ast_istype(((ast_expression*)(X)), ast_value) && (X)->hasvalue && ((X)->cvq == CV_CONST) && \
1175 ((ast_expression*)(X))->vtype != TYPE_FUNCTION)
1177 if (fid + 1 < vec_size(sy->out))
1180 for (i = 0; i < paramcount; ++i) {
1181 if (!fold_can_1((ast_value*)sy->out[fid + 1 + i].out)) {
1188 * All is well which ends well, if we make it into here we can ignore the
1189 * intrinsic call and just evaluate it i.e constant fold it.
1191 if (fold && ast_istype(fun, ast_value) && ((ast_value*)fun)->intrinsic) {
1192 ast_expression **exprs = NULL;
1193 ast_expression *foldval = NULL;
1195 for (i = 0; i < paramcount; i++)
1196 vec_push(exprs, sy->out[fid+1 + i].out);
1198 if (!(foldval = intrin_fold(parser->intrin, (ast_value*)fun, exprs))) {
1204 * Blub: what sorts of unreffing and resizing of
1205 * sy->out should I be doing here?
1207 sy->out[fid] = syexp(foldval->node.context, foldval);
1208 vec_shrinkby(sy->out, 1);
1215 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1220 if (fid+1 + paramcount != vec_size(sy->out)) {
1221 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1222 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1226 for (i = 0; i < paramcount; ++i)
1227 vec_push(call->params, sy->out[fid+1 + i].out);
1228 vec_shrinkby(sy->out, paramcount);
1229 (void)!ast_call_check_types(call, parser->function->vtype->expression.varparam);
1230 if (parser->max_param_count < paramcount)
1231 parser->max_param_count = paramcount;
1233 if (ast_istype(fun, ast_value)) {
1234 funval = (ast_value*)fun;
1235 if ((fun->flags & AST_FLAG_VARIADIC) &&
1236 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1238 call->va_count = (ast_expression*)fold_constgen_float(parser->fold, (qcfloat_t)paramcount);
1242 /* overwrite fid, the function, with a call */
1243 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1245 if (fun->vtype != TYPE_FUNCTION) {
1246 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1251 parseerror(parser, "could not determine function return type");
1254 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1256 if (fun->flags & AST_FLAG_DEPRECATED) {
1258 return !parsewarning(parser, WARN_DEPRECATED,
1259 "call to function (which is marked deprecated)\n",
1260 "-> it has been declared here: %s:%i",
1261 ast_ctx(fun).file, ast_ctx(fun).line);
1264 return !parsewarning(parser, WARN_DEPRECATED,
1265 "call to `%s` (which is marked deprecated)\n"
1266 "-> `%s` declared here: %s:%i",
1267 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1269 return !parsewarning(parser, WARN_DEPRECATED,
1270 "call to `%s` (deprecated: %s)\n"
1271 "-> `%s` declared here: %s:%i",
1272 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1276 if (vec_size(fun->params) != paramcount &&
1277 !((fun->flags & AST_FLAG_VARIADIC) &&
1278 vec_size(fun->params) < paramcount))
1280 const char *fewmany = (vec_size(fun->params) > paramcount) ? "few" : "many";
1282 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1283 "too %s parameters for call to %s: expected %i, got %i\n"
1284 " -> `%s` has been declared here: %s:%i",
1285 fewmany, fval->name, (int)vec_size(fun->params), (int)paramcount,
1286 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1288 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1289 "too %s parameters for function call: expected %i, got %i\n"
1290 " -> it has been declared here: %s:%i",
1291 fewmany, (int)vec_size(fun->params), (int)paramcount,
1292 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1299 static bool parser_close_paren(parser_t *parser, shunt *sy)
1301 if (!vec_size(sy->ops)) {
1302 parseerror(parser, "unmatched closing paren");
1306 while (vec_size(sy->ops)) {
1307 if (vec_last(sy->ops).isparen) {
1308 if (vec_last(sy->paren) == PAREN_FUNC) {
1310 if (!parser_close_call(parser, sy))
1314 if (vec_last(sy->paren) == PAREN_EXPR) {
1316 if (!vec_size(sy->out)) {
1317 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1318 vec_shrinkby(sy->ops, 1);
1321 vec_shrinkby(sy->ops, 1);
1324 if (vec_last(sy->paren) == PAREN_INDEX) {
1326 /* pop off the parenthesis */
1327 vec_shrinkby(sy->ops, 1);
1328 /* then apply the index operator */
1329 if (!parser_sy_apply_operator(parser, sy))
1333 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1334 vec_last(sy->paren) = PAREN_TERNARY2;
1335 /* pop off the parenthesis */
1336 vec_shrinkby(sy->ops, 1);
1339 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1342 if (!parser_sy_apply_operator(parser, sy))
1348 static void parser_reclassify_token(parser_t *parser)
1351 if (parser->tok >= TOKEN_START)
1353 for (i = 0; i < operator_count; ++i) {
1354 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1355 parser->tok = TOKEN_OPERATOR;
1361 static ast_expression* parse_vararg_do(parser_t *parser)
1363 ast_expression *idx, *out;
1365 ast_value *funtype = parser->function->vtype;
1366 lex_ctx_t ctx = parser_ctx(parser);
1368 if (!parser->function->varargs) {
1369 parseerror(parser, "function has no variable argument list");
1373 if (!parser_next(parser) || parser->tok != '(') {
1374 parseerror(parser, "expected parameter index and type in parenthesis");
1377 if (!parser_next(parser)) {
1378 parseerror(parser, "error parsing parameter index");
1382 idx = parse_expression_leave(parser, true, false, false);
1386 if (parser->tok != ',') {
1387 if (parser->tok != ')') {
1389 parseerror(parser, "expected comma after parameter index");
1392 /* vararg piping: ...(start) */
1393 out = (ast_expression*)ast_argpipe_new(ctx, idx);
1397 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1399 parseerror(parser, "expected typename for vararg");
1403 typevar = parse_typename(parser, NULL, NULL);
1409 if (parser->tok != ')') {
1411 ast_delete(typevar);
1412 parseerror(parser, "expected closing paren");
1416 if (funtype->expression.varparam &&
1417 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1421 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1422 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1423 compile_error(ast_ctx(typevar),
1424 "function was declared to take varargs of type `%s`, requested type is: %s",
1428 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1429 ast_type_adopt(out, typevar);
1430 ast_delete(typevar);
1434 static ast_expression* parse_vararg(parser_t *parser)
1436 bool old_noops = parser->lex->flags.noops;
1438 ast_expression *out;
1440 parser->lex->flags.noops = true;
1441 out = parse_vararg_do(parser);
1443 parser->lex->flags.noops = old_noops;
1447 /* not to be exposed */
1448 bool ftepp_predef_exists(const char *name);
1449 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1451 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1452 parser->tok == TOKEN_IDENT &&
1453 !strcmp(parser_tokval(parser), "_"))
1455 /* a translatable string */
1458 parser->lex->flags.noops = true;
1459 if (!parser_next(parser) || parser->tok != '(') {
1460 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1463 parser->lex->flags.noops = false;
1464 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1465 parseerror(parser, "expected a constant string in translatable-string extension");
1468 val = (ast_value*)fold_constgen_string(parser->fold, parser_tokval(parser), true);
1471 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1473 if (!parser_next(parser) || parser->tok != ')') {
1474 parseerror(parser, "expected closing paren after translatable string");
1479 else if (parser->tok == TOKEN_DOTS)
1482 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1483 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1486 va = parse_vararg(parser);
1489 vec_push(sy->out, syexp(parser_ctx(parser), va));
1492 else if (parser->tok == TOKEN_FLOATCONST) {
1493 ast_expression *val = fold_constgen_float(parser->fold, (parser_token(parser)->constval.f));
1496 vec_push(sy->out, syexp(parser_ctx(parser), val));
1499 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1500 ast_expression *val = fold_constgen_float(parser->fold, (qcfloat_t)(parser_token(parser)->constval.i));
1503 vec_push(sy->out, syexp(parser_ctx(parser), val));
1506 else if (parser->tok == TOKEN_STRINGCONST) {
1507 ast_expression *val = fold_constgen_string(parser->fold, parser_tokval(parser), false);
1510 vec_push(sy->out, syexp(parser_ctx(parser), val));
1513 else if (parser->tok == TOKEN_VECTORCONST) {
1514 ast_expression *val = fold_constgen_vector(parser->fold, parser_token(parser)->constval.v);
1517 vec_push(sy->out, syexp(parser_ctx(parser), val));
1520 else if (parser->tok == TOKEN_IDENT)
1522 const char *ctoken = parser_tokval(parser);
1523 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1524 ast_expression *var;
1525 /* a_vector.{x,y,z} */
1526 if (!vec_size(sy->ops) ||
1527 !vec_last(sy->ops).etype ||
1528 operators[vec_last(sy->ops).etype-1].id != opid1('.'))
1530 /* When adding more intrinsics, fix the above condition */
1533 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1535 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1537 var = parser_find_var(parser, parser_tokval(parser));
1539 var = parser_find_field(parser, parser_tokval(parser));
1541 if (!var && with_labels) {
1542 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1544 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1545 var = (ast_expression*)lbl;
1546 vec_push(parser->labels, lbl);
1549 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
1550 var = (ast_expression*)fold_constgen_string(parser->fold, parser->function->name, false);
1553 * now we try for the real intrinsic hashtable. If the string
1554 * begins with __builtin, we simply skip past it, otherwise we
1555 * use the identifier as is.
1557 if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
1558 var = intrin_func(parser->intrin, parser_tokval(parser));
1562 char *correct = NULL;
1566 * sometimes people use preprocessing predefs without enabling them
1567 * i've done this thousands of times already myself. Lets check for
1568 * it in the predef table. And diagnose it better :)
1570 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
1571 parseerror(parser, "unexpected identifier: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1576 * TODO: determine the best score for the identifier: be it
1577 * a variable, a field.
1579 * We should also consider adding correction tables for
1580 * other things as well.
1582 if (OPTS_OPTION_BOOL(OPTION_CORRECTION) && strlen(parser_tokval(parser)) <= 16) {
1584 correct_init(&corr);
1586 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1587 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1588 if (strcmp(correct, parser_tokval(parser))) {
1595 correct_free(&corr);
1598 parseerror(parser, "unexpected identifier: %s (did you mean %s?)", parser_tokval(parser), correct);
1603 parseerror(parser, "unexpected identifier: %s", parser_tokval(parser));
1609 if (ast_istype(var, ast_value)) {
1610 ((ast_value*)var)->uses++;
1612 else if (ast_istype(var, ast_member)) {
1613 ast_member *mem = (ast_member*)var;
1614 if (ast_istype(mem->owner, ast_value))
1615 ((ast_value*)(mem->owner))->uses++;
1618 vec_push(sy->out, syexp(parser_ctx(parser), var));
1621 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1625 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1627 ast_expression *expr = NULL;
1630 bool wantop = false;
1631 /* only warn once about an assignment in a truth value because the current code
1632 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1634 bool warn_parenthesis = true;
1636 /* count the parens because an if starts with one, so the
1637 * end of a condition is an unmatched closing paren
1641 memset(&sy, 0, sizeof(sy));
1643 parser->lex->flags.noops = false;
1645 parser_reclassify_token(parser);
1649 if (parser->tok == TOKEN_TYPENAME) {
1650 parseerror(parser, "unexpected typename `%s`", parser_tokval(parser));
1654 if (parser->tok == TOKEN_OPERATOR)
1656 /* classify the operator */
1657 const oper_info *op;
1658 const oper_info *olast = NULL;
1660 for (o = 0; o < operator_count; ++o) {
1661 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1662 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1663 !strcmp(parser_tokval(parser), operators[o].op))
1668 if (o == operator_count) {
1669 compile_error(parser_ctx(parser), "unexpected operator: %s", parser_tokval(parser));
1672 /* found an operator */
1675 /* when declaring variables, a comma starts a new variable */
1676 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
1677 /* fixup the token */
1682 /* a colon without a pervious question mark cannot be a ternary */
1683 if (!ternaries && op->id == opid2(':','?')) {
1688 if (op->id == opid1(',')) {
1689 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1690 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1694 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1695 olast = &operators[vec_last(sy.ops).etype-1];
1697 /* first only apply higher precedences, assoc_left+equal comes after we warn about precedence rules */
1698 while (olast && op->prec < olast->prec)
1700 if (!parser_sy_apply_operator(parser, &sy))
1702 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1703 olast = &operators[vec_last(sy.ops).etype-1];
1708 #define IsAssignOp(x) (\
1709 (x) == opid1('=') || \
1710 (x) == opid2('+','=') || \
1711 (x) == opid2('-','=') || \
1712 (x) == opid2('*','=') || \
1713 (x) == opid2('/','=') || \
1714 (x) == opid2('%','=') || \
1715 (x) == opid2('&','=') || \
1716 (x) == opid2('|','=') || \
1717 (x) == opid3('&','~','=') \
1719 if (warn_parenthesis) {
1720 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1721 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1722 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
1725 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1726 warn_parenthesis = false;
1729 if (olast && olast->id != op->id) {
1730 if ((op->id == opid1('&') || op->id == opid1('|') || op->id == opid1('^')) &&
1731 (olast->id == opid1('&') || olast->id == opid1('|') || olast->id == opid1('^')))
1733 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around bitwise operations");
1734 warn_parenthesis = false;
1736 else if ((op->id == opid2('&','&') || op->id == opid2('|','|')) &&
1737 (olast->id == opid2('&','&') || olast->id == opid2('|','|')))
1739 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around logical operations");
1740 warn_parenthesis = false;
1746 (op->prec < olast->prec) ||
1747 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1749 if (!parser_sy_apply_operator(parser, &sy))
1751 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1752 olast = &operators[vec_last(sy.ops).etype-1];
1757 if (op->id == opid1('(')) {
1759 size_t sycount = vec_size(sy.out);
1760 /* we expected an operator, this is the function-call operator */
1761 vec_push(sy.paren, PAREN_FUNC);
1762 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
1763 vec_push(sy.argc, 0);
1765 vec_push(sy.paren, PAREN_EXPR);
1766 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1769 } else if (op->id == opid1('[')) {
1771 parseerror(parser, "unexpected array subscript");
1774 vec_push(sy.paren, PAREN_INDEX);
1775 /* push both the operator and the paren, this makes life easier */
1776 vec_push(sy.ops, syop(parser_ctx(parser), op));
1777 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1779 } else if (op->id == opid2('?',':')) {
1780 vec_push(sy.ops, syop(parser_ctx(parser), op));
1781 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1784 vec_push(sy.paren, PAREN_TERNARY1);
1785 } else if (op->id == opid2(':','?')) {
1786 if (!vec_size(sy.paren)) {
1787 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1790 if (vec_last(sy.paren) != PAREN_TERNARY1) {
1791 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1794 if (!parser_close_paren(parser, &sy))
1796 vec_push(sy.ops, syop(parser_ctx(parser), op));
1800 vec_push(sy.ops, syop(parser_ctx(parser), op));
1801 wantop = !!(op->flags & OP_SUFFIX);
1804 else if (parser->tok == ')') {
1805 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1806 if (!parser_sy_apply_operator(parser, &sy))
1809 if (!vec_size(sy.paren))
1812 if (vec_last(sy.paren) == PAREN_TERNARY1) {
1813 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
1816 if (!parser_close_paren(parser, &sy))
1819 /* must be a function call without parameters */
1820 if (vec_last(sy.paren) != PAREN_FUNC) {
1821 parseerror(parser, "closing paren in invalid position");
1824 if (!parser_close_paren(parser, &sy))
1829 else if (parser->tok == '(') {
1830 parseerror(parser, "internal error: '(' should be classified as operator");
1833 else if (parser->tok == '[') {
1834 parseerror(parser, "internal error: '[' should be classified as operator");
1837 else if (parser->tok == ']') {
1838 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1839 if (!parser_sy_apply_operator(parser, &sy))
1842 if (!vec_size(sy.paren))
1844 if (vec_last(sy.paren) != PAREN_INDEX) {
1845 parseerror(parser, "mismatched parentheses, unexpected ']'");
1848 if (!parser_close_paren(parser, &sy))
1853 if (!parse_sya_operand(parser, &sy, with_labels))
1856 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
1857 vec_last(sy.argc)++;
1862 /* in this case we might want to allow constant string concatenation */
1863 bool concatenated = false;
1864 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
1865 ast_expression *lexpr = vec_last(sy.out).out;
1866 if (ast_istype(lexpr, ast_value)) {
1867 ast_value *last = (ast_value*)lexpr;
1868 if (last->isimm == true && last->cvq == CV_CONST &&
1869 last->hasvalue && last->expression.vtype == TYPE_STRING)
1871 char *newstr = NULL;
1872 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
1873 vec_last(sy.out).out = (ast_expression*)fold_constgen_string(parser->fold, newstr, false);
1875 concatenated = true;
1879 if (!concatenated) {
1880 parseerror(parser, "expected operator or end of statement");
1885 if (!parser_next(parser)) {
1888 if (parser->tok == ';' ||
1889 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
1890 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
1896 while (vec_size(sy.ops)) {
1897 if (!parser_sy_apply_operator(parser, &sy))
1901 parser->lex->flags.noops = true;
1902 if (vec_size(sy.out) != 1) {
1903 parseerror(parser, "expression with not 1 but %lu output values...", (unsigned long) vec_size(sy.out));
1906 expr = sy.out[0].out;
1909 if (vec_size(sy.paren)) {
1910 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
1918 parser->lex->flags.noops = true;
1919 for (i = 0; i < vec_size(sy.out); ++i) {
1921 ast_unref(sy.out[i].out);
1930 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
1932 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
1935 if (parser->tok != ';') {
1936 parseerror(parser, "semicolon expected after expression");
1940 if (!parser_next(parser)) {
1947 static void parser_enterblock(parser_t *parser)
1949 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1950 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1951 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1952 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1953 vec_push(parser->_block_ctx, parser_ctx(parser));
1956 vec_push(parser->correct_variables, correct_trie_new());
1957 vec_push(parser->correct_variables_score, NULL);
1960 static bool parser_leaveblock(parser_t *parser)
1963 size_t locals, typedefs;
1965 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1966 parseerror(parser, "internal error: parser_leaveblock with no block");
1970 util_htdel(vec_last(parser->variables));
1971 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
1973 vec_pop(parser->variables);
1974 vec_pop(parser->correct_variables);
1975 vec_pop(parser->correct_variables_score);
1976 if (!vec_size(parser->_blocklocals)) {
1977 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1981 locals = vec_last(parser->_blocklocals);
1982 vec_pop(parser->_blocklocals);
1983 while (vec_size(parser->_locals) != locals) {
1984 ast_expression *e = vec_last(parser->_locals);
1985 ast_value *v = (ast_value*)e;
1986 vec_pop(parser->_locals);
1987 if (ast_istype(e, ast_value) && !v->uses) {
1988 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
1993 typedefs = vec_last(parser->_blocktypedefs);
1994 while (vec_size(parser->_typedefs) != typedefs) {
1995 ast_delete(vec_last(parser->_typedefs));
1996 vec_pop(parser->_typedefs);
1998 util_htdel(vec_last(parser->typedefs));
1999 vec_pop(parser->typedefs);
2001 vec_pop(parser->_block_ctx);
2006 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2008 vec_push(parser->_locals, e);
2009 util_htset(vec_last(parser->variables), name, (void*)e);
2013 vec_last(parser->correct_variables),
2014 &vec_last(parser->correct_variables_score),
2019 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2021 vec_push(parser->globals, e);
2022 util_htset(parser->htglobals, name, e);
2026 parser->correct_variables[0],
2027 &parser->correct_variables_score[0],
2032 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2036 ast_expression *prev;
2038 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2040 ast_type_to_string(cond, ty, sizeof(ty));
2041 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2044 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2047 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2050 parseerror(parser, "internal error: failed to process condition");
2055 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2057 /* vector types need to be cast to true booleans */
2058 ast_binary *bin = (ast_binary*)cond;
2059 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2061 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2063 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2066 parseerror(parser, "internal error: failed to process condition");
2073 unary = (ast_unary*)cond;
2074 /* ast_istype dereferences cond, should test here for safety */
2075 while (cond && ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2077 cond = unary->operand;
2078 unary->operand = NULL;
2081 unary = (ast_unary*)cond;
2085 parseerror(parser, "internal error: failed to process condition");
2087 if (ifnot) *_ifnot = !*_ifnot;
2091 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2094 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2097 lex_ctx_t ctx = parser_ctx(parser);
2099 (void)block; /* not touching */
2101 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2102 if (!parser_next(parser)) {
2103 parseerror(parser, "expected condition or 'not'");
2106 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2108 if (!parser_next(parser)) {
2109 parseerror(parser, "expected condition in parenthesis");
2113 if (parser->tok != '(') {
2114 parseerror(parser, "expected 'if' condition in parenthesis");
2117 /* parse into the expression */
2118 if (!parser_next(parser)) {
2119 parseerror(parser, "expected 'if' condition after opening paren");
2122 /* parse the condition */
2123 cond = parse_expression_leave(parser, false, true, false);
2127 if (parser->tok != ')') {
2128 parseerror(parser, "expected closing paren after 'if' condition");
2132 /* parse into the 'then' branch */
2133 if (!parser_next(parser)) {
2134 parseerror(parser, "expected statement for on-true branch of 'if'");
2138 if (!parse_statement_or_block(parser, &ontrue)) {
2143 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2144 /* check for an else */
2145 if (!strcmp(parser_tokval(parser), "else")) {
2146 /* parse into the 'else' branch */
2147 if (!parser_next(parser)) {
2148 parseerror(parser, "expected on-false branch after 'else'");
2153 if (!parse_statement_or_block(parser, &onfalse)) {
2160 cond = process_condition(parser, cond, &ifnot);
2162 if (ontrue) ast_delete(ontrue);
2163 if (onfalse) ast_delete(onfalse);
2168 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2170 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2171 *out = (ast_expression*)ifthen;
2175 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2176 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2181 /* skip the 'while' and get the body */
2182 if (!parser_next(parser)) {
2183 if (OPTS_FLAG(LOOP_LABELS))
2184 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2186 parseerror(parser, "expected 'while' condition in parenthesis");
2190 if (parser->tok == ':') {
2191 if (!OPTS_FLAG(LOOP_LABELS))
2192 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2193 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2194 parseerror(parser, "expected loop label");
2197 label = util_strdup(parser_tokval(parser));
2198 if (!parser_next(parser)) {
2200 parseerror(parser, "expected 'while' condition in parenthesis");
2205 if (parser->tok != '(') {
2206 parseerror(parser, "expected 'while' condition in parenthesis");
2210 vec_push(parser->breaks, label);
2211 vec_push(parser->continues, label);
2213 rv = parse_while_go(parser, block, out);
2216 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2217 parseerror(parser, "internal error: label stack corrupted");
2223 vec_pop(parser->breaks);
2224 vec_pop(parser->continues);
2229 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2232 ast_expression *cond, *ontrue;
2236 lex_ctx_t ctx = parser_ctx(parser);
2238 (void)block; /* not touching */
2240 /* parse into the expression */
2241 if (!parser_next(parser)) {
2242 parseerror(parser, "expected 'while' condition after opening paren");
2245 /* parse the condition */
2246 cond = parse_expression_leave(parser, false, true, false);
2250 if (parser->tok != ')') {
2251 parseerror(parser, "expected closing paren after 'while' condition");
2255 /* parse into the 'then' branch */
2256 if (!parser_next(parser)) {
2257 parseerror(parser, "expected while-loop body");
2261 if (!parse_statement_or_block(parser, &ontrue)) {
2266 cond = process_condition(parser, cond, &ifnot);
2271 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2272 *out = (ast_expression*)aloop;
2276 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2277 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2282 /* skip the 'do' and get the body */
2283 if (!parser_next(parser)) {
2284 if (OPTS_FLAG(LOOP_LABELS))
2285 parseerror(parser, "expected loop label or body");
2287 parseerror(parser, "expected loop body");
2291 if (parser->tok == ':') {
2292 if (!OPTS_FLAG(LOOP_LABELS))
2293 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2294 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2295 parseerror(parser, "expected loop label");
2298 label = util_strdup(parser_tokval(parser));
2299 if (!parser_next(parser)) {
2301 parseerror(parser, "expected loop body");
2306 vec_push(parser->breaks, label);
2307 vec_push(parser->continues, label);
2309 rv = parse_dowhile_go(parser, block, out);
2312 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2313 parseerror(parser, "internal error: label stack corrupted");
2316 * Test for NULL otherwise ast_delete dereferences null pointer
2324 vec_pop(parser->breaks);
2325 vec_pop(parser->continues);
2330 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2333 ast_expression *cond, *ontrue;
2337 lex_ctx_t ctx = parser_ctx(parser);
2339 (void)block; /* not touching */
2341 if (!parse_statement_or_block(parser, &ontrue))
2344 /* expect the "while" */
2345 if (parser->tok != TOKEN_KEYWORD ||
2346 strcmp(parser_tokval(parser), "while"))
2348 parseerror(parser, "expected 'while' and condition");
2353 /* skip the 'while' and check for opening paren */
2354 if (!parser_next(parser) || parser->tok != '(') {
2355 parseerror(parser, "expected 'while' condition in parenthesis");
2359 /* parse into the expression */
2360 if (!parser_next(parser)) {
2361 parseerror(parser, "expected 'while' condition after opening paren");
2365 /* parse the condition */
2366 cond = parse_expression_leave(parser, false, true, false);
2370 if (parser->tok != ')') {
2371 parseerror(parser, "expected closing paren after 'while' condition");
2377 if (!parser_next(parser) || parser->tok != ';') {
2378 parseerror(parser, "expected semicolon after condition");
2384 if (!parser_next(parser)) {
2385 parseerror(parser, "parse error");
2391 cond = process_condition(parser, cond, &ifnot);
2396 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2397 *out = (ast_expression*)aloop;
2401 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2402 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2407 /* skip the 'for' and check for opening paren */
2408 if (!parser_next(parser)) {
2409 if (OPTS_FLAG(LOOP_LABELS))
2410 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2412 parseerror(parser, "expected 'for' expressions in parenthesis");
2416 if (parser->tok == ':') {
2417 if (!OPTS_FLAG(LOOP_LABELS))
2418 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2419 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2420 parseerror(parser, "expected loop label");
2423 label = util_strdup(parser_tokval(parser));
2424 if (!parser_next(parser)) {
2426 parseerror(parser, "expected 'for' expressions in parenthesis");
2431 if (parser->tok != '(') {
2432 parseerror(parser, "expected 'for' expressions in parenthesis");
2436 vec_push(parser->breaks, label);
2437 vec_push(parser->continues, label);
2439 rv = parse_for_go(parser, block, out);
2442 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2443 parseerror(parser, "internal error: label stack corrupted");
2449 vec_pop(parser->breaks);
2450 vec_pop(parser->continues);
2454 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2457 ast_expression *initexpr, *cond, *increment, *ontrue;
2462 lex_ctx_t ctx = parser_ctx(parser);
2464 parser_enterblock(parser);
2471 /* parse into the expression */
2472 if (!parser_next(parser)) {
2473 parseerror(parser, "expected 'for' initializer after opening paren");
2478 if (parser->tok == TOKEN_IDENT)
2479 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2481 if (typevar || parser->tok == TOKEN_TYPENAME) {
2483 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2484 if (parsewarning(parser, WARN_EXTENSIONS,
2485 "current standard does not allow variable declarations in for-loop initializers"))
2489 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2492 else if (parser->tok != ';')
2494 initexpr = parse_expression_leave(parser, false, false, false);
2499 /* move on to condition */
2500 if (parser->tok != ';') {
2501 parseerror(parser, "expected semicolon after for-loop initializer");
2504 if (!parser_next(parser)) {
2505 parseerror(parser, "expected for-loop condition");
2509 /* parse the condition */
2510 if (parser->tok != ';') {
2511 cond = parse_expression_leave(parser, false, true, false);
2516 /* move on to incrementor */
2517 if (parser->tok != ';') {
2518 parseerror(parser, "expected semicolon after for-loop initializer");
2521 if (!parser_next(parser)) {
2522 parseerror(parser, "expected for-loop condition");
2526 /* parse the incrementor */
2527 if (parser->tok != ')') {
2528 lex_ctx_t condctx = parser_ctx(parser);
2529 increment = parse_expression_leave(parser, false, false, false);
2532 if (!ast_side_effects(increment)) {
2533 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2539 if (parser->tok != ')') {
2540 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2543 /* parse into the 'then' branch */
2544 if (!parser_next(parser)) {
2545 parseerror(parser, "expected for-loop body");
2548 if (!parse_statement_or_block(parser, &ontrue))
2552 cond = process_condition(parser, cond, &ifnot);
2556 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2557 *out = (ast_expression*)aloop;
2559 if (!parser_leaveblock(parser)) {
2565 if (initexpr) ast_unref(initexpr);
2566 if (cond) ast_unref(cond);
2567 if (increment) ast_unref(increment);
2568 (void)!parser_leaveblock(parser);
2572 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2574 ast_expression *exp = NULL;
2575 ast_expression *var = NULL;
2576 ast_return *ret = NULL;
2577 ast_value *retval = parser->function->return_value;
2578 ast_value *expected = parser->function->vtype;
2580 lex_ctx_t ctx = parser_ctx(parser);
2582 (void)block; /* not touching */
2584 if (!parser_next(parser)) {
2585 parseerror(parser, "expected return expression");
2589 /* return assignments */
2590 if (parser->tok == '=') {
2591 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
2592 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
2596 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
2598 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
2599 parseerror(parser, "invalid return type: `%s'", ty1);
2603 if (!parser_next(parser)) {
2604 parseerror(parser, "expected return assignment expression");
2608 if (!(exp = parse_expression_leave(parser, false, false, false)))
2611 /* prepare the return value */
2613 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
2614 ast_type_adopt(retval, expected->expression.next);
2615 parser->function->return_value = retval;
2618 if (!ast_compare_type(exp, (ast_expression*)retval)) {
2619 char ty1[1024], ty2[1024];
2620 ast_type_to_string(exp, ty1, sizeof(ty1));
2621 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
2622 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
2625 /* store to 'return' local variable */
2626 var = (ast_expression*)ast_store_new(
2628 type_store_instr[expected->expression.next->vtype],
2629 (ast_expression*)retval, exp);
2636 if (parser->tok != ';')
2637 parseerror(parser, "missing semicolon after return assignment");
2638 else if (!parser_next(parser))
2639 parseerror(parser, "parse error after return assignment");
2645 if (parser->tok != ';') {
2646 exp = parse_expression(parser, false, false);
2650 if (exp->vtype != TYPE_NIL &&
2651 exp->vtype != ((ast_expression*)expected)->next->vtype)
2653 parseerror(parser, "return with invalid expression");
2656 ret = ast_return_new(ctx, exp);
2662 if (!parser_next(parser))
2663 parseerror(parser, "parse error");
2665 if (!retval && expected->expression.next->vtype != TYPE_VOID)
2667 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2669 ret = ast_return_new(ctx, (ast_expression*)retval);
2671 *out = (ast_expression*)ret;
2675 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2678 unsigned int levels = 0;
2679 lex_ctx_t ctx = parser_ctx(parser);
2680 const char **loops = (is_continue ? parser->continues : parser->breaks);
2682 (void)block; /* not touching */
2683 if (!parser_next(parser)) {
2684 parseerror(parser, "expected semicolon or loop label");
2688 if (!vec_size(loops)) {
2690 parseerror(parser, "`continue` can only be used inside loops");
2692 parseerror(parser, "`break` can only be used inside loops or switches");
2695 if (parser->tok == TOKEN_IDENT) {
2696 if (!OPTS_FLAG(LOOP_LABELS))
2697 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2698 i = vec_size(loops);
2700 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2703 parseerror(parser, "no such loop to %s: `%s`",
2704 (is_continue ? "continue" : "break out of"),
2705 parser_tokval(parser));
2710 if (!parser_next(parser)) {
2711 parseerror(parser, "expected semicolon");
2716 if (parser->tok != ';') {
2717 parseerror(parser, "expected semicolon");
2721 if (!parser_next(parser))
2722 parseerror(parser, "parse error");
2724 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2728 /* returns true when it was a variable qualifier, false otherwise!
2729 * on error, cvq is set to CV_WRONG
2731 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2733 bool had_const = false;
2734 bool had_var = false;
2735 bool had_noref = false;
2736 bool had_attrib = false;
2737 bool had_static = false;
2742 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2744 /* parse an attribute */
2745 if (!parser_next(parser)) {
2746 parseerror(parser, "expected attribute after `[[`");
2750 if (!strcmp(parser_tokval(parser), "noreturn")) {
2751 flags |= AST_FLAG_NORETURN;
2752 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2753 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2758 else if (!strcmp(parser_tokval(parser), "noref")) {
2760 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2761 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2766 else if (!strcmp(parser_tokval(parser), "inline")) {
2767 flags |= AST_FLAG_INLINE;
2768 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2769 parseerror(parser, "`inline` attribute has no parameters, expected `]]`");
2774 else if (!strcmp(parser_tokval(parser), "eraseable")) {
2775 flags |= AST_FLAG_ERASEABLE;
2776 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2777 parseerror(parser, "`eraseable` attribute has no parameters, expected `]]`");
2782 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
2783 flags |= AST_FLAG_ALIAS;
2786 if (!parser_next(parser)) {
2787 parseerror(parser, "parse error in attribute");
2791 if (parser->tok == '(') {
2792 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2793 parseerror(parser, "`alias` attribute missing parameter");
2797 *message = util_strdup(parser_tokval(parser));
2799 if (!parser_next(parser)) {
2800 parseerror(parser, "parse error in attribute");
2804 if (parser->tok != ')') {
2805 parseerror(parser, "`alias` attribute expected `)` after parameter");
2809 if (!parser_next(parser)) {
2810 parseerror(parser, "parse error in attribute");
2815 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2816 parseerror(parser, "`alias` attribute expected `]]`");
2820 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2821 flags |= AST_FLAG_DEPRECATED;
2824 if (!parser_next(parser)) {
2825 parseerror(parser, "parse error in attribute");
2829 if (parser->tok == '(') {
2830 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2831 parseerror(parser, "`deprecated` attribute missing parameter");
2835 *message = util_strdup(parser_tokval(parser));
2837 if (!parser_next(parser)) {
2838 parseerror(parser, "parse error in attribute");
2842 if(parser->tok != ')') {
2843 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2847 if (!parser_next(parser)) {
2848 parseerror(parser, "parse error in attribute");
2853 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2854 parseerror(parser, "`deprecated` attribute expected `]]`");
2857 if (*message) mem_d(*message);
2865 /* Skip tokens until we hit a ]] */
2866 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2867 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2868 if (!parser_next(parser)) {
2869 parseerror(parser, "error inside attribute");
2876 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2878 else if (!strcmp(parser_tokval(parser), "const"))
2880 else if (!strcmp(parser_tokval(parser), "var"))
2882 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2884 else if (!strcmp(parser_tokval(parser), "noref"))
2886 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2891 if (!parser_next(parser))
2901 *is_static = had_static;
2905 parseerror(parser, "parse error after variable qualifier");
2910 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2911 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2916 /* skip the 'while' and get the body */
2917 if (!parser_next(parser)) {
2918 if (OPTS_FLAG(LOOP_LABELS))
2919 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2921 parseerror(parser, "expected 'switch' operand in parenthesis");
2925 if (parser->tok == ':') {
2926 if (!OPTS_FLAG(LOOP_LABELS))
2927 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2928 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2929 parseerror(parser, "expected loop label");
2932 label = util_strdup(parser_tokval(parser));
2933 if (!parser_next(parser)) {
2935 parseerror(parser, "expected 'switch' operand in parenthesis");
2940 if (parser->tok != '(') {
2941 parseerror(parser, "expected 'switch' operand in parenthesis");
2945 vec_push(parser->breaks, label);
2947 rv = parse_switch_go(parser, block, out);
2950 if (vec_last(parser->breaks) != label) {
2951 parseerror(parser, "internal error: label stack corrupted");
2957 vec_pop(parser->breaks);
2962 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
2964 ast_expression *operand;
2967 ast_switch *switchnode;
2968 ast_switch_case swcase;
2971 bool noref, is_static;
2972 uint32_t qflags = 0;
2974 lex_ctx_t ctx = parser_ctx(parser);
2976 (void)block; /* not touching */
2979 /* parse into the expression */
2980 if (!parser_next(parser)) {
2981 parseerror(parser, "expected switch operand");
2984 /* parse the operand */
2985 operand = parse_expression_leave(parser, false, false, false);
2989 switchnode = ast_switch_new(ctx, operand);
2992 if (parser->tok != ')') {
2993 ast_delete(switchnode);
2994 parseerror(parser, "expected closing paren after 'switch' operand");
2998 /* parse over the opening paren */
2999 if (!parser_next(parser) || parser->tok != '{') {
3000 ast_delete(switchnode);
3001 parseerror(parser, "expected list of cases");
3005 if (!parser_next(parser)) {
3006 ast_delete(switchnode);
3007 parseerror(parser, "expected 'case' or 'default'");
3011 /* new block; allow some variables to be declared here */
3012 parser_enterblock(parser);
3015 if (parser->tok == TOKEN_IDENT)
3016 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3017 if (typevar || parser->tok == TOKEN_TYPENAME) {
3018 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3019 ast_delete(switchnode);
3024 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3026 if (cvq == CV_WRONG) {
3027 ast_delete(switchnode);
3030 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3031 ast_delete(switchnode);
3040 while (parser->tok != '}') {
3041 ast_block *caseblock;
3043 if (!strcmp(parser_tokval(parser), "case")) {
3044 if (!parser_next(parser)) {
3045 ast_delete(switchnode);
3046 parseerror(parser, "expected expression for case");
3049 swcase.value = parse_expression_leave(parser, false, false, false);
3050 if (!swcase.value) {
3051 ast_delete(switchnode);
3052 parseerror(parser, "expected expression for case");
3055 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3056 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3057 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3063 else if (!strcmp(parser_tokval(parser), "default")) {
3064 swcase.value = NULL;
3065 if (!parser_next(parser)) {
3066 ast_delete(switchnode);
3067 parseerror(parser, "expected colon");
3072 ast_delete(switchnode);
3073 parseerror(parser, "expected 'case' or 'default'");
3077 /* Now the colon and body */
3078 if (parser->tok != ':') {
3079 if (swcase.value) ast_unref(swcase.value);
3080 ast_delete(switchnode);
3081 parseerror(parser, "expected colon");
3085 if (!parser_next(parser)) {
3086 if (swcase.value) ast_unref(swcase.value);
3087 ast_delete(switchnode);
3088 parseerror(parser, "expected statements or case");
3091 caseblock = ast_block_new(parser_ctx(parser));
3093 if (swcase.value) ast_unref(swcase.value);
3094 ast_delete(switchnode);
3097 swcase.code = (ast_expression*)caseblock;
3098 vec_push(switchnode->cases, swcase);
3100 ast_expression *expr;
3101 if (parser->tok == '}')
3103 if (parser->tok == TOKEN_KEYWORD) {
3104 if (!strcmp(parser_tokval(parser), "case") ||
3105 !strcmp(parser_tokval(parser), "default"))
3110 if (!parse_statement(parser, caseblock, &expr, true)) {
3111 ast_delete(switchnode);
3116 if (!ast_block_add_expr(caseblock, expr)) {
3117 ast_delete(switchnode);
3123 parser_leaveblock(parser);
3126 if (parser->tok != '}') {
3127 ast_delete(switchnode);
3128 parseerror(parser, "expected closing paren of case list");
3131 if (!parser_next(parser)) {
3132 ast_delete(switchnode);
3133 parseerror(parser, "parse error after switch");
3136 *out = (ast_expression*)switchnode;
3140 /* parse computed goto sides */
3141 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3142 ast_expression *on_true;
3143 ast_expression *on_false;
3144 ast_expression *cond;
3149 if (ast_istype(*side, ast_ternary)) {
3150 ast_ternary *tern = (ast_ternary*)*side;
3151 on_true = parse_goto_computed(parser, &tern->on_true);
3152 on_false = parse_goto_computed(parser, &tern->on_false);
3154 if (!on_true || !on_false) {
3155 parseerror(parser, "expected label or expression in ternary");
3156 if (on_true) ast_unref(on_true);
3157 if (on_false) ast_unref(on_false);
3165 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3166 } else if (ast_istype(*side, ast_label)) {
3167 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3168 ast_goto_set_label(gt, ((ast_label*)*side));
3170 return (ast_expression*)gt;
3175 static bool parse_goto(parser_t *parser, ast_expression **out)
3177 ast_goto *gt = NULL;
3178 ast_expression *lbl;
3180 if (!parser_next(parser))
3183 if (parser->tok != TOKEN_IDENT) {
3184 ast_expression *expression;
3186 /* could be an expression i.e computed goto :-) */
3187 if (parser->tok != '(') {
3188 parseerror(parser, "expected label name after `goto`");
3192 /* failed to parse expression for goto */
3193 if (!(expression = parse_expression(parser, false, true)) ||
3194 !(*out = parse_goto_computed(parser, &expression))) {
3195 parseerror(parser, "invalid goto expression");
3197 ast_unref(expression);
3204 /* not computed goto */
3205 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3206 lbl = parser_find_label(parser, gt->name);
3208 if (!ast_istype(lbl, ast_label)) {
3209 parseerror(parser, "internal error: label is not an ast_label");
3213 ast_goto_set_label(gt, (ast_label*)lbl);
3216 vec_push(parser->gotos, gt);
3218 if (!parser_next(parser) || parser->tok != ';') {
3219 parseerror(parser, "semicolon expected after goto label");
3222 if (!parser_next(parser)) {
3223 parseerror(parser, "parse error after goto");
3227 *out = (ast_expression*)gt;
3231 static bool parse_skipwhite(parser_t *parser)
3234 if (!parser_next(parser))
3236 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3237 return parser->tok < TOKEN_ERROR;
3240 static bool parse_eol(parser_t *parser)
3242 if (!parse_skipwhite(parser))
3244 return parser->tok == TOKEN_EOL;
3247 static bool parse_pragma_do(parser_t *parser)
3249 if (!parser_next(parser) ||
3250 parser->tok != TOKEN_IDENT ||
3251 strcmp(parser_tokval(parser), "pragma"))
3253 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3256 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3257 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3261 if (!strcmp(parser_tokval(parser), "noref")) {
3262 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3263 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3266 parser->noref = !!parser_token(parser)->constval.i;
3267 if (!parse_eol(parser)) {
3268 parseerror(parser, "parse error after `noref` pragma");
3274 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3281 static bool parse_pragma(parser_t *parser)
3284 parser->lex->flags.preprocessing = true;
3285 parser->lex->flags.mergelines = true;
3286 rv = parse_pragma_do(parser);
3287 if (parser->tok != TOKEN_EOL) {
3288 parseerror(parser, "junk after pragma");
3291 parser->lex->flags.preprocessing = false;
3292 parser->lex->flags.mergelines = false;
3293 if (!parser_next(parser)) {
3294 parseerror(parser, "parse error after pragma");
3300 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3302 bool noref, is_static;
3304 uint32_t qflags = 0;
3305 ast_value *typevar = NULL;
3306 char *vstring = NULL;
3310 if (parser->tok == TOKEN_IDENT)
3311 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3313 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3315 /* local variable */
3317 parseerror(parser, "cannot declare a variable from here");
3320 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3321 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3324 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3328 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3330 if (cvq == CV_WRONG)
3332 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3334 else if (parser->tok == TOKEN_KEYWORD)
3336 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3341 if (!parser_next(parser)) {
3342 parseerror(parser, "parse error after __builtin_debug_printtype");
3346 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3348 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3349 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3350 if (!parser_next(parser)) {
3351 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3357 if (!parse_statement(parser, block, out, allow_cases))
3360 con_out("__builtin_debug_printtype: got no output node\n");
3363 ast_type_to_string(*out, ty, sizeof(ty));
3364 con_out("__builtin_debug_printtype: `%s`\n", ty);
3369 else if (!strcmp(parser_tokval(parser), "return"))
3371 return parse_return(parser, block, out);
3373 else if (!strcmp(parser_tokval(parser), "if"))
3375 return parse_if(parser, block, out);
3377 else if (!strcmp(parser_tokval(parser), "while"))
3379 return parse_while(parser, block, out);
3381 else if (!strcmp(parser_tokval(parser), "do"))
3383 return parse_dowhile(parser, block, out);
3385 else if (!strcmp(parser_tokval(parser), "for"))
3387 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3388 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3391 return parse_for(parser, block, out);
3393 else if (!strcmp(parser_tokval(parser), "break"))
3395 return parse_break_continue(parser, block, out, false);
3397 else if (!strcmp(parser_tokval(parser), "continue"))
3399 return parse_break_continue(parser, block, out, true);
3401 else if (!strcmp(parser_tokval(parser), "switch"))
3403 return parse_switch(parser, block, out);
3405 else if (!strcmp(parser_tokval(parser), "case") ||
3406 !strcmp(parser_tokval(parser), "default"))
3409 parseerror(parser, "unexpected 'case' label");
3414 else if (!strcmp(parser_tokval(parser), "goto"))
3416 return parse_goto(parser, out);
3418 else if (!strcmp(parser_tokval(parser), "typedef"))
3420 if (!parser_next(parser)) {
3421 parseerror(parser, "expected type definition after 'typedef'");
3424 return parse_typedef(parser);
3426 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3429 else if (parser->tok == '{')
3432 inner = parse_block(parser);
3435 *out = (ast_expression*)inner;
3438 else if (parser->tok == ':')
3442 if (!parser_next(parser)) {
3443 parseerror(parser, "expected label name");
3446 if (parser->tok != TOKEN_IDENT) {
3447 parseerror(parser, "label must be an identifier");
3450 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3452 if (!label->undefined) {
3453 parseerror(parser, "label `%s` already defined", label->name);
3456 label->undefined = false;
3459 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3460 vec_push(parser->labels, label);
3462 *out = (ast_expression*)label;
3463 if (!parser_next(parser)) {
3464 parseerror(parser, "parse error after label");
3467 for (i = 0; i < vec_size(parser->gotos); ++i) {
3468 if (!strcmp(parser->gotos[i]->name, label->name)) {
3469 ast_goto_set_label(parser->gotos[i], label);
3470 vec_remove(parser->gotos, i, 1);
3476 else if (parser->tok == ';')
3478 if (!parser_next(parser)) {
3479 parseerror(parser, "parse error after empty statement");
3486 lex_ctx_t ctx = parser_ctx(parser);
3487 ast_expression *exp = parse_expression(parser, false, false);
3491 if (!ast_side_effects(exp)) {
3492 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3499 static bool parse_enum(parser_t *parser)
3502 bool reverse = false;
3504 ast_value **values = NULL;
3505 ast_value *var = NULL;
3508 ast_expression *old;
3510 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3511 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3515 /* enumeration attributes (can add more later) */
3516 if (parser->tok == ':') {
3517 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3518 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3523 if (!strcmp(parser_tokval(parser), "flag")) {
3527 else if (!strcmp(parser_tokval(parser), "reverse")) {
3531 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3535 if (!parser_next(parser) || parser->tok != '{') {
3536 parseerror(parser, "expected `{` after enum attribute ");
3542 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3543 if (parser->tok == '}') {
3544 /* allow an empty enum */
3547 parseerror(parser, "expected identifier or `}`");
3551 old = parser_find_field(parser, parser_tokval(parser));
3553 old = parser_find_global(parser, parser_tokval(parser));
3555 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3556 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3560 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3561 vec_push(values, var);
3562 var->cvq = CV_CONST;
3563 var->hasvalue = true;
3565 /* for flagged enumerations increment in POTs of TWO */
3566 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3567 parser_addglobal(parser, var->name, (ast_expression*)var);
3569 if (!parser_next(parser)) {
3570 parseerror(parser, "expected `=`, `}` or comma after identifier");
3574 if (parser->tok == ',')
3576 if (parser->tok == '}')
3578 if (parser->tok != '=') {
3579 parseerror(parser, "expected `=`, `}` or comma after identifier");
3583 if (!parser_next(parser)) {
3584 parseerror(parser, "expected expression after `=`");
3588 /* We got a value! */
3589 old = parse_expression_leave(parser, true, false, false);
3590 asvalue = (ast_value*)old;
3591 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3592 compile_error(ast_ctx(var), "constant value or expression expected");
3595 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3597 if (parser->tok == '}')
3599 if (parser->tok != ',') {
3600 parseerror(parser, "expected `}` or comma after expression");
3605 /* patch them all (for reversed attribute) */
3608 for (i = 0; i < vec_size(values); i++)
3609 values[i]->constval.vfloat = vec_size(values) - i - 1;
3612 if (parser->tok != '}') {
3613 parseerror(parser, "internal error: breaking without `}`");
3617 if (!parser_next(parser) || parser->tok != ';') {
3618 parseerror(parser, "expected semicolon after enumeration");
3622 if (!parser_next(parser)) {
3623 parseerror(parser, "parse error after enumeration");
3635 static bool parse_block_into(parser_t *parser, ast_block *block)
3639 parser_enterblock(parser);
3641 if (!parser_next(parser)) { /* skip the '{' */
3642 parseerror(parser, "expected function body");
3646 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3648 ast_expression *expr = NULL;
3649 if (parser->tok == '}')
3652 if (!parse_statement(parser, block, &expr, false)) {
3653 /* parseerror(parser, "parse error"); */
3659 if (!ast_block_add_expr(block, expr)) {
3666 if (parser->tok != '}') {
3669 (void)parser_next(parser);
3673 if (!parser_leaveblock(parser))
3675 return retval && !!block;
3678 static ast_block* parse_block(parser_t *parser)
3681 block = ast_block_new(parser_ctx(parser));
3684 if (!parse_block_into(parser, block)) {
3685 ast_block_delete(block);
3691 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3693 if (parser->tok == '{') {
3694 *out = (ast_expression*)parse_block(parser);
3697 return parse_statement(parser, NULL, out, false);
3700 static bool create_vector_members(ast_value *var, ast_member **me)
3703 size_t len = strlen(var->name);
3705 for (i = 0; i < 3; ++i) {
3706 char *name = (char*)mem_a(len+3);
3707 memcpy(name, var->name, len);
3709 name[len+1] = 'x'+i;
3711 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3720 do { ast_member_delete(me[--i]); } while(i);
3724 static bool parse_function_body(parser_t *parser, ast_value *var)
3726 ast_block *block = NULL;
3731 ast_expression *framenum = NULL;
3732 ast_expression *nextthink = NULL;
3733 /* None of the following have to be deleted */
3734 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3735 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3736 bool has_frame_think;
3740 has_frame_think = false;
3741 old = parser->function;
3743 if (var->expression.flags & AST_FLAG_ALIAS) {
3744 parseerror(parser, "function aliases cannot have bodies");
3748 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3749 parseerror(parser, "gotos/labels leaking");
3753 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
3754 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3755 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
3761 if (parser->tok == '[') {
3762 /* got a frame definition: [ framenum, nextthink ]
3763 * this translates to:
3764 * self.frame = framenum;
3765 * self.nextthink = time + 0.1;
3766 * self.think = nextthink;
3770 fld_think = parser_find_field(parser, "think");
3771 fld_nextthink = parser_find_field(parser, "nextthink");
3772 fld_frame = parser_find_field(parser, "frame");
3773 if (!fld_think || !fld_nextthink || !fld_frame) {
3774 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3775 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3778 gbl_time = parser_find_global(parser, "time");
3779 gbl_self = parser_find_global(parser, "self");
3780 if (!gbl_time || !gbl_self) {
3781 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3782 parseerror(parser, "please declare the following globals: `time`, `self`");
3786 if (!parser_next(parser))
3789 framenum = parse_expression_leave(parser, true, false, false);
3791 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3794 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3795 ast_unref(framenum);
3796 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3800 if (parser->tok != ',') {
3801 ast_unref(framenum);
3802 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3803 parseerror(parser, "Got a %i\n", parser->tok);
3807 if (!parser_next(parser)) {
3808 ast_unref(framenum);
3812 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3814 /* qc allows the use of not-yet-declared functions here
3815 * - this automatically creates a prototype */
3816 ast_value *thinkfunc;
3817 ast_expression *functype = fld_think->next;
3819 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
3820 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
3821 ast_unref(framenum);
3822 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3825 ast_type_adopt(thinkfunc, functype);
3827 if (!parser_next(parser)) {
3828 ast_unref(framenum);
3829 ast_delete(thinkfunc);
3833 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3835 nextthink = (ast_expression*)thinkfunc;
3838 nextthink = parse_expression_leave(parser, true, false, false);
3840 ast_unref(framenum);
3841 parseerror(parser, "expected a think-function in [frame,think] notation");
3846 if (!ast_istype(nextthink, ast_value)) {
3847 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3851 if (retval && parser->tok != ']') {
3852 parseerror(parser, "expected closing `]` for [frame,think] notation");
3856 if (retval && !parser_next(parser)) {
3860 if (retval && parser->tok != '{') {
3861 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3866 ast_unref(nextthink);
3867 ast_unref(framenum);
3871 has_frame_think = true;
3874 block = ast_block_new(parser_ctx(parser));
3876 parseerror(parser, "failed to allocate block");
3877 if (has_frame_think) {
3878 ast_unref(nextthink);
3879 ast_unref(framenum);
3884 if (has_frame_think) {
3886 ast_expression *self_frame;
3887 ast_expression *self_nextthink;
3888 ast_expression *self_think;
3889 ast_expression *time_plus_1;
3890 ast_store *store_frame;
3891 ast_store *store_nextthink;
3892 ast_store *store_think;
3894 ctx = parser_ctx(parser);
3895 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3896 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3897 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3899 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3900 gbl_time, (ast_expression*)fold_constgen_float(parser->fold, 0.1f));
3902 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3903 if (self_frame) ast_delete(self_frame);
3904 if (self_nextthink) ast_delete(self_nextthink);
3905 if (self_think) ast_delete(self_think);
3906 if (time_plus_1) ast_delete(time_plus_1);
3912 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3913 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3914 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3917 ast_delete(self_frame);
3920 if (!store_nextthink) {
3921 ast_delete(self_nextthink);
3925 ast_delete(self_think);
3929 if (store_frame) ast_delete(store_frame);
3930 if (store_nextthink) ast_delete(store_nextthink);
3931 if (store_think) ast_delete(store_think);
3934 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3935 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3936 !ast_block_add_expr(block, (ast_expression*)store_think))
3943 parseerror(parser, "failed to generate code for [frame,think]");
3944 ast_unref(nextthink);
3945 ast_unref(framenum);
3951 if (var->hasvalue) {
3952 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
3953 ast_block_delete(block);
3957 func = ast_function_new(ast_ctx(var), var->name, var);
3959 parseerror(parser, "failed to allocate function for `%s`", var->name);
3960 ast_block_delete(block);
3963 vec_push(parser->functions, func);
3965 parser_enterblock(parser);
3967 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3969 ast_value *param = var->expression.params[parami];
3972 if (param->expression.vtype != TYPE_VECTOR &&
3973 (param->expression.vtype != TYPE_FIELD ||
3974 param->expression.next->vtype != TYPE_VECTOR))
3979 if (!create_vector_members(param, me)) {
3980 ast_block_delete(block);
3984 for (e = 0; e < 3; ++e) {
3985 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3986 ast_block_collect(block, (ast_expression*)me[e]);
3990 if (var->argcounter) {
3991 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
3992 parser_addlocal(parser, argc->name, (ast_expression*)argc);
3996 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
3998 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
3999 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4000 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4001 varargs->expression.count = 0;
4002 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4003 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4004 ast_delete(varargs);
4005 ast_block_delete(block);
4008 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4009 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4010 ast_delete(varargs);
4011 ast_block_delete(block);
4014 func->varargs = varargs;
4015 func->fixedparams = (ast_value*)fold_constgen_float(parser->fold, vec_size(var->expression.params));
4018 parser->function = func;
4019 if (!parse_block_into(parser, block)) {
4020 ast_block_delete(block);
4024 vec_push(func->blocks, block);
4027 parser->function = old;
4028 if (!parser_leaveblock(parser))
4030 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4031 parseerror(parser, "internal error: local scopes left");
4035 if (parser->tok == ';')
4036 return parser_next(parser);
4037 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4038 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4042 (void)!parser_leaveblock(parser);
4043 vec_pop(parser->functions);
4044 ast_function_delete(func);
4045 var->constval.vfunc = NULL;
4048 parser->function = old;
4052 static ast_expression *array_accessor_split(
4057 ast_expression *left,
4058 ast_expression *right
4064 lex_ctx_t ctx = ast_ctx(array);
4066 if (!left || !right) {
4067 if (left) ast_delete(left);
4068 if (right) ast_delete(right);
4072 cmp = ast_binary_new(ctx, INSTR_LT,
4073 (ast_expression*)index,
4074 (ast_expression*)fold_constgen_float(parser->fold, middle));
4078 parseerror(parser, "internal error: failed to create comparison for array setter");
4082 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4084 ast_delete(cmp); /* will delete left and right */
4085 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4089 return (ast_expression*)ifthen;
4092 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4094 lex_ctx_t ctx = ast_ctx(array);
4096 if (from+1 == afterend) {
4097 /* set this value */
4100 ast_array_index *subscript;
4102 int assignop = type_store_instr[value->expression.vtype];
4104 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4105 assignop = INSTR_STORE_V;
4107 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4111 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4113 ast_delete(subscript);
4117 block = ast_block_new(ctx);
4123 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4128 ret = ast_return_new(ctx, NULL);
4134 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4139 return (ast_expression*)block;
4141 ast_expression *left, *right;
4142 size_t diff = afterend - from;
4143 size_t middle = from + diff/2;
4144 left = array_setter_node(parser, array, index, value, from, middle);
4145 right = array_setter_node(parser, array, index, value, middle, afterend);
4146 return array_accessor_split(parser, array, index, middle, left, right);
4150 static ast_expression *array_field_setter_node(
4159 lex_ctx_t ctx = ast_ctx(array);
4161 if (from+1 == afterend) {
4162 /* set this value */
4165 ast_entfield *entfield;
4166 ast_array_index *subscript;
4168 int assignop = type_storep_instr[value->expression.vtype];
4170 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4171 assignop = INSTR_STOREP_V;
4173 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4177 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4178 subscript->expression.vtype = TYPE_FIELD;
4180 entfield = ast_entfield_new_force(ctx,
4181 (ast_expression*)entity,
4182 (ast_expression*)subscript,
4183 (ast_expression*)subscript);
4185 ast_delete(subscript);
4189 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4191 ast_delete(entfield);
4195 block = ast_block_new(ctx);
4201 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4206 ret = ast_return_new(ctx, NULL);
4212 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4217 return (ast_expression*)block;
4219 ast_expression *left, *right;
4220 size_t diff = afterend - from;
4221 size_t middle = from + diff/2;
4222 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4223 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4224 return array_accessor_split(parser, array, index, middle, left, right);
4228 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4230 lex_ctx_t ctx = ast_ctx(array);
4232 if (from+1 == afterend) {
4234 ast_array_index *subscript;
4236 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4240 ret = ast_return_new(ctx, (ast_expression*)subscript);
4242 ast_delete(subscript);
4246 return (ast_expression*)ret;
4248 ast_expression *left, *right;
4249 size_t diff = afterend - from;
4250 size_t middle = from + diff/2;
4251 left = array_getter_node(parser, array, index, from, middle);
4252 right = array_getter_node(parser, array, index, middle, afterend);
4253 return array_accessor_split(parser, array, index, middle, left, right);
4257 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4259 ast_function *func = NULL;
4260 ast_value *fval = NULL;
4261 ast_block *body = NULL;
4263 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4265 parseerror(parser, "failed to create accessor function value");
4269 func = ast_function_new(ast_ctx(array), funcname, fval);
4272 parseerror(parser, "failed to create accessor function node");
4276 body = ast_block_new(ast_ctx(array));
4278 parseerror(parser, "failed to create block for array accessor");
4284 vec_push(func->blocks, body);
4287 vec_push(parser->accessors, fval);
4292 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4294 ast_value *index = NULL;
4295 ast_value *value = NULL;
4299 if (!ast_istype(array->expression.next, ast_value)) {
4300 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4304 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4306 func = fval->constval.vfunc;
4307 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4309 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4310 value = ast_value_copy((ast_value*)array->expression.next);
4312 if (!index || !value) {
4313 parseerror(parser, "failed to create locals for array accessor");
4316 (void)!ast_value_set_name(value, "value"); /* not important */
4317 vec_push(fval->expression.params, index);
4318 vec_push(fval->expression.params, value);
4320 array->setter = fval;
4323 if (index) ast_delete(index);
4324 if (value) ast_delete(value);
4330 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4332 ast_expression *root = NULL;
4333 root = array_setter_node(parser, array,
4334 array->setter->expression.params[0],
4335 array->setter->expression.params[1],
4336 0, array->expression.count);
4338 parseerror(parser, "failed to build accessor search tree");
4341 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4348 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4350 if (!parser_create_array_setter_proto(parser, array, funcname))
4352 return parser_create_array_setter_impl(parser, array);
4355 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4357 ast_expression *root = NULL;
4358 ast_value *entity = NULL;
4359 ast_value *index = NULL;
4360 ast_value *value = NULL;
4364 if (!ast_istype(array->expression.next, ast_value)) {
4365 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4369 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4371 func = fval->constval.vfunc;
4372 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4374 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4375 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4376 value = ast_value_copy((ast_value*)array->expression.next);
4377 if (!entity || !index || !value) {
4378 parseerror(parser, "failed to create locals for array accessor");
4381 (void)!ast_value_set_name(value, "value"); /* not important */
4382 vec_push(fval->expression.params, entity);
4383 vec_push(fval->expression.params, index);
4384 vec_push(fval->expression.params, value);
4386 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4388 parseerror(parser, "failed to build accessor search tree");
4392 array->setter = fval;
4393 return ast_block_add_expr(func->blocks[0], root);
4395 if (entity) ast_delete(entity);
4396 if (index) ast_delete(index);
4397 if (value) ast_delete(value);
4398 if (root) ast_delete(root);
4404 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4406 ast_value *index = NULL;
4410 /* NOTE: checking array->expression.next rather than elemtype since
4411 * for fields elemtype is a temporary fieldtype.
4413 if (!ast_istype(array->expression.next, ast_value)) {
4414 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4418 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4420 func = fval->constval.vfunc;
4421 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4423 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4426 parseerror(parser, "failed to create locals for array accessor");
4429 vec_push(fval->expression.params, index);
4431 array->getter = fval;
4434 if (index) ast_delete(index);
4440 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4442 ast_expression *root = NULL;
4444 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4446 parseerror(parser, "failed to build accessor search tree");
4449 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4456 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4458 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4460 return parser_create_array_getter_impl(parser, array);
4463 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4464 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4472 bool variadic = false;
4473 ast_value *varparam = NULL;
4474 char *argcounter = NULL;
4476 ctx = parser_ctx(parser);
4478 /* for the sake of less code we parse-in in this function */
4479 if (!parser_next(parser)) {
4481 parseerror(parser, "expected parameter list");
4487 /* parse variables until we hit a closing paren */
4488 while (parser->tok != ')') {
4490 /* there must be commas between them */
4491 if (parser->tok != ',') {
4492 parseerror(parser, "expected comma or end of parameter list");
4495 if (!parser_next(parser)) {
4496 parseerror(parser, "expected parameter");
4502 if (parser->tok == TOKEN_DOTS) {
4503 /* '...' indicates a varargs function */
4505 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4506 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4509 if (parser->tok == TOKEN_IDENT) {
4510 argcounter = util_strdup(parser_tokval(parser));
4511 if (!parser_next(parser) || parser->tok != ')') {
4512 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4519 /* for anything else just parse a typename */
4520 param = parse_typename(parser, NULL, NULL);
4523 vec_push(params, param);
4524 if (param->expression.vtype >= TYPE_VARIANT) {
4525 char tname[1024]; /* typename is reserved in C++ */
4526 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4527 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4530 /* type-restricted varargs */
4531 if (parser->tok == TOKEN_DOTS) {
4533 varparam = vec_last(params);
4535 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4536 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4539 if (parser->tok == TOKEN_IDENT) {
4540 argcounter = util_strdup(parser_tokval(parser));
4541 if (!parser_next(parser) || parser->tok != ')') {
4542 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4550 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4554 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4555 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4558 if (!parser_next(parser)) {
4559 parseerror(parser, "parse error after typename");
4563 /* now turn 'var' into a function type */
4564 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4565 fval->expression.next = (ast_expression*)var;
4567 fval->expression.flags |= AST_FLAG_VARIADIC;
4570 var->expression.params = params;
4571 var->expression.varparam = (ast_expression*)varparam;
4572 var->argcounter = argcounter;
4581 ast_delete(varparam);
4583 for (i = 0; i < vec_size(params); ++i)
4584 ast_delete(params[i]);
4589 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4591 ast_expression *cexp;
4592 ast_value *cval, *tmp;
4595 ctx = parser_ctx(parser);
4597 if (!parser_next(parser)) {
4599 parseerror(parser, "expected array-size");
4603 if (parser->tok != ']') {
4604 cexp = parse_expression_leave(parser, true, false, false);
4606 if (!cexp || !ast_istype(cexp, ast_value)) {
4610 parseerror(parser, "expected array-size as constant positive integer");
4613 cval = (ast_value*)cexp;
4620 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4621 tmp->expression.next = (ast_expression*)var;
4625 if (cval->expression.vtype == TYPE_INTEGER)
4626 tmp->expression.count = cval->constval.vint;
4627 else if (cval->expression.vtype == TYPE_FLOAT)
4628 tmp->expression.count = cval->constval.vfloat;
4632 parseerror(parser, "array-size must be a positive integer constant");
4638 var->expression.count = -1;
4639 var->expression.flags |= AST_FLAG_ARRAY_INIT;
4642 if (parser->tok != ']') {
4644 parseerror(parser, "expected ']' after array-size");
4647 if (!parser_next(parser)) {
4649 parseerror(parser, "error after parsing array size");
4655 /* Parse a complete typename.
4656 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4657 * but when parsing variables separated by comma
4658 * 'storebase' should point to where the base-type should be kept.
4659 * The base type makes up every bit of type information which comes *before* the
4662 * The following will be parsed in its entirety:
4664 * The 'basetype' in this case is 'void()'
4665 * and if there's a comma after it, say:
4667 * then the type-information 'void()' can be stored in 'storebase'
4669 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4671 ast_value *var, *tmp;
4674 const char *name = NULL;
4675 bool isfield = false;
4676 bool wasarray = false;
4677 size_t morefields = 0;
4679 ctx = parser_ctx(parser);
4681 /* types may start with a dot */
4682 if (parser->tok == '.') {
4684 /* if we parsed a dot we need a typename now */
4685 if (!parser_next(parser)) {
4686 parseerror(parser, "expected typename for field definition");
4690 /* Further dots are handled seperately because they won't be part of the
4693 while (parser->tok == '.') {
4695 if (!parser_next(parser)) {
4696 parseerror(parser, "expected typename for field definition");
4701 if (parser->tok == TOKEN_IDENT)
4702 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4703 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4704 parseerror(parser, "expected typename");
4708 /* generate the basic type value */
4709 if (cached_typedef) {
4710 var = ast_value_copy(cached_typedef);
4711 ast_value_set_name(var, "<type(from_def)>");
4713 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4715 for (; morefields; --morefields) {
4716 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4717 tmp->expression.next = (ast_expression*)var;
4721 /* do not yet turn into a field - remember:
4722 * .void() foo; is a field too
4723 * .void()() foo; is a function
4727 if (!parser_next(parser)) {
4729 parseerror(parser, "parse error after typename");
4733 /* an opening paren now starts the parameter-list of a function
4734 * this is where original-QC has parameter lists.
4735 * We allow a single parameter list here.
4736 * Much like fteqcc we don't allow `float()() x`
4738 if (parser->tok == '(') {
4739 var = parse_parameter_list(parser, var);
4744 /* store the base if requested */
4746 *storebase = ast_value_copy(var);
4748 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4749 tmp->expression.next = (ast_expression*)*storebase;
4754 /* there may be a name now */
4755 if (parser->tok == TOKEN_IDENT) {
4756 name = util_strdup(parser_tokval(parser));
4758 if (!parser_next(parser)) {
4761 parseerror(parser, "error after variable or field declaration");
4766 /* now this may be an array */
4767 if (parser->tok == '[') {
4769 var = parse_arraysize(parser, var);
4771 if (name) mem_d(name);
4776 /* This is the point where we can turn it into a field */
4778 /* turn it into a field if desired */
4779 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4780 tmp->expression.next = (ast_expression*)var;
4784 /* now there may be function parens again */
4785 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4786 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4787 if (parser->tok == '(' && wasarray)
4788 parseerror(parser, "arrays as part of a return type is not supported");
4789 while (parser->tok == '(') {
4790 var = parse_parameter_list(parser, var);
4792 if (name) mem_d(name);
4797 /* finally name it */
4799 if (!ast_value_set_name(var, name)) {
4802 parseerror(parser, "internal error: failed to set name");
4805 /* free the name, ast_value_set_name duplicates */
4812 static bool parse_typedef(parser_t *parser)
4814 ast_value *typevar, *oldtype;
4815 ast_expression *old;
4817 typevar = parse_typename(parser, NULL, NULL);
4822 if ( (old = parser_find_var(parser, typevar->name)) ) {
4823 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4824 " -> `%s` has been declared here: %s:%i",
4825 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4826 ast_delete(typevar);
4830 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4831 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4832 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4833 ast_delete(typevar);
4837 vec_push(parser->_typedefs, typevar);
4838 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4840 if (parser->tok != ';') {
4841 parseerror(parser, "expected semicolon after typedef");
4844 if (!parser_next(parser)) {
4845 parseerror(parser, "parse error after typedef");
4852 static const char *cvq_to_str(int cvq) {
4854 case CV_NONE: return "none";
4855 case CV_VAR: return "`var`";
4856 case CV_CONST: return "`const`";
4857 default: return "<INVALID>";
4861 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4864 if (proto->cvq != var->cvq) {
4865 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4866 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4867 parser->tok == '='))
4869 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4870 "`%s` declared with different qualifiers: %s\n"
4871 " -> previous declaration here: %s:%i uses %s",
4872 var->name, cvq_to_str(var->cvq),
4873 ast_ctx(proto).file, ast_ctx(proto).line,
4874 cvq_to_str(proto->cvq));
4877 av = (var ->expression.flags & AST_FLAG_NORETURN);
4878 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4880 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4881 "`%s` declared with different attributes%s\n"
4882 " -> previous declaration here: %s:%i",
4883 var->name, (av ? ": noreturn" : ""),
4884 ast_ctx(proto).file, ast_ctx(proto).line,
4885 (ao ? ": noreturn" : ""));
4890 static bool create_array_accessors(parser_t *parser, ast_value *var)
4893 util_snprintf(name, sizeof(name), "%s##SET", var->name);
4894 if (!parser_create_array_setter(parser, var, name))
4896 util_snprintf(name, sizeof(name), "%s##GET", var->name);
4897 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4902 static bool parse_array(parser_t *parser, ast_value *array)
4905 if (array->initlist) {
4906 parseerror(parser, "array already initialized elsewhere");
4909 if (!parser_next(parser)) {
4910 parseerror(parser, "parse error in array initializer");
4914 while (parser->tok != '}') {
4915 ast_value *v = (ast_value*)parse_expression_leave(parser, true, false, false);
4918 if (!ast_istype(v, ast_value) || !v->hasvalue || v->cvq != CV_CONST) {
4920 parseerror(parser, "initializing element must be a compile time constant");
4923 vec_push(array->initlist, v->constval);
4924 if (v->expression.vtype == TYPE_STRING) {
4925 array->initlist[i].vstring = util_strdupe(array->initlist[i].vstring);
4929 if (parser->tok == '}')
4931 if (parser->tok != ',' || !parser_next(parser)) {
4932 parseerror(parser, "expected comma or '}' in element list");
4936 if (!parser_next(parser) || parser->tok != ';') {
4937 parseerror(parser, "expected semicolon after initializer, got %s");
4941 if (!parser_next(parser)) {
4942 parseerror(parser, "parse error after initializer");
4947 if (array->expression.flags & AST_FLAG_ARRAY_INIT) {
4948 if (array->expression.count != (size_t)-1) {
4949 parseerror(parser, "array `%s' has already been initialized with %u elements",
4950 array->name, (unsigned)array->expression.count);
4952 array->expression.count = vec_size(array->initlist);
4953 if (!create_array_accessors(parser, array))
4959 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)
4963 ast_expression *old;
4967 ast_value *basetype = NULL;
4969 bool isparam = false;
4970 bool isvector = false;
4971 bool cleanvar = true;
4972 bool wasarray = false;
4974 ast_member *me[3] = { NULL, NULL, NULL };
4976 if (!localblock && is_static)
4977 parseerror(parser, "`static` qualifier is not supported in global scope");
4979 /* get the first complete variable */
4980 var = parse_typename(parser, &basetype, cached_typedef);
4983 ast_delete(basetype);
4991 /* Part 0: finish the type */
4992 if (parser->tok == '(') {
4993 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4994 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4995 var = parse_parameter_list(parser, var);
5001 /* we only allow 1-dimensional arrays */
5002 if (parser->tok == '[') {
5004 var = parse_arraysize(parser, var);
5010 if (parser->tok == '(' && wasarray) {
5011 parseerror(parser, "arrays as part of a return type is not supported");
5012 /* we'll still parse the type completely for now */
5014 /* for functions returning functions */
5015 while (parser->tok == '(') {
5016 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5017 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5018 var = parse_parameter_list(parser, var);
5025 var->cvq = qualifier;
5026 var->expression.flags |= qflags;
5029 * store the vstring back to var for alias and
5030 * deprecation messages.
5032 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5033 var->expression.flags & AST_FLAG_ALIAS)
5034 var->desc = vstring;
5037 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5038 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5039 * is then filled with the previous definition and the parameter-names replaced.
5041 if (!strcmp(var->name, "nil")) {
5042 if (OPTS_FLAG(UNTYPED_NIL)) {
5043 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5044 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5046 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5049 /* Deal with end_sys_ vars */
5051 if (!strcmp(var->name, "end_sys_globals")) {
5053 parser->crc_globals = vec_size(parser->globals);
5056 else if (!strcmp(var->name, "end_sys_fields")) {
5058 parser->crc_fields = vec_size(parser->fields);
5061 if (was_end && var->expression.vtype == TYPE_FIELD) {
5062 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5063 "global '%s' hint should not be a field",
5064 parser_tokval(parser)))
5071 if (!nofields && var->expression.vtype == TYPE_FIELD)
5073 /* deal with field declarations */
5074 old = parser_find_field(parser, var->name);
5076 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5077 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5086 parseerror(parser, "field `%s` already declared here: %s:%i",
5087 var->name, ast_ctx(old).file, ast_ctx(old).line);
5092 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5093 (old = parser_find_global(parser, var->name)))
5095 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5096 parseerror(parser, "field `%s` already declared here: %s:%i",
5097 var->name, ast_ctx(old).file, ast_ctx(old).line);
5104 /* deal with other globals */
5105 old = parser_find_global(parser, var->name);
5106 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5108 /* This is a function which had a prototype */
5109 if (!ast_istype(old, ast_value)) {
5110 parseerror(parser, "internal error: prototype is not an ast_value");
5114 proto = (ast_value*)old;
5115 proto->desc = var->desc;
5116 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5117 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5119 ast_ctx(proto).file, ast_ctx(proto).line);
5123 /* we need the new parameter-names */
5124 for (i = 0; i < vec_size(proto->expression.params); ++i)
5125 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5126 if (!parser_check_qualifiers(parser, var, proto)) {
5133 proto->expression.flags |= var->expression.flags;
5141 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5142 "global `%s` already declared here: %s:%i",
5143 var->name, ast_ctx(old).file, ast_ctx(old).line))
5148 proto = (ast_value*)old;
5149 if (!ast_istype(old, ast_value)) {
5150 parseerror(parser, "internal error: not an ast_value");
5155 if (!parser_check_qualifiers(parser, var, proto)) {
5160 proto->expression.flags |= var->expression.flags;
5164 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5165 (old = parser_find_field(parser, var->name)))
5167 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5168 parseerror(parser, "global `%s` already declared here: %s:%i",
5169 var->name, ast_ctx(old).file, ast_ctx(old).line);
5176 else /* it's not a global */
5178 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5179 if (old && !isparam) {
5180 parseerror(parser, "local `%s` already declared here: %s:%i",
5181 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5185 old = parser_find_local(parser, var->name, 0, &isparam);
5186 if (old && isparam) {
5187 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5188 "local `%s` is shadowing a parameter", var->name))
5190 parseerror(parser, "local `%s` already declared here: %s:%i",
5191 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5195 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5197 if (ast_istype(old, ast_value))
5198 var = (ast_value*)old;
5207 /* in a noref section we simply bump the usecount */
5208 if (noref || parser->noref)
5212 * Create the global/local, and deal with vector types.
5215 if (var->expression.vtype == TYPE_VECTOR)
5217 else if (var->expression.vtype == TYPE_FIELD &&
5218 var->expression.next->vtype == TYPE_VECTOR)
5222 if (!create_vector_members(var, me)) {
5229 /* deal with global variables, fields, functions */
5230 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5231 var->isfield = true;
5232 vec_push(parser->fields, (ast_expression*)var);
5233 util_htset(parser->htfields, var->name, var);
5235 for (i = 0; i < 3; ++i) {
5236 vec_push(parser->fields, (ast_expression*)me[i]);
5237 util_htset(parser->htfields, me[i]->name, me[i]);
5242 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5243 parser_addglobal(parser, var->name, (ast_expression*)var);
5245 for (i = 0; i < 3; ++i) {
5246 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5250 ast_expression *find = parser_find_global(parser, var->desc);
5253 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5257 if (var->expression.vtype != find->vtype) {
5261 ast_type_to_string(find, ty1, sizeof(ty1));
5262 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5264 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5271 * add alias to aliases table and to corrector
5272 * so corrections can apply for aliases as well.
5274 util_htset(parser->aliases, var->name, find);
5277 * add to corrector so corrections can work
5278 * even for aliases too.
5281 vec_last(parser->correct_variables),
5282 &vec_last(parser->correct_variables_score),
5286 /* generate aliases for vector components */
5290 util_asprintf(&buffer[0], "%s_x", var->desc);
5291 util_asprintf(&buffer[1], "%s_y", var->desc);
5292 util_asprintf(&buffer[2], "%s_z", var->desc);
5294 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5295 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5296 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5303 * add to corrector so corrections can work
5304 * even for aliases too.
5307 vec_last(parser->correct_variables),
5308 &vec_last(parser->correct_variables_score),
5312 vec_last(parser->correct_variables),
5313 &vec_last(parser->correct_variables_score),
5317 vec_last(parser->correct_variables),
5318 &vec_last(parser->correct_variables_score),
5326 /* a static adds itself to be generated like any other global
5327 * but is added to the local namespace instead
5329 char *defname = NULL;
5330 size_t prefix_len, ln;
5332 ln = strlen(parser->function->name);
5333 vec_append(defname, ln, parser->function->name);
5335 vec_append(defname, 2, "::");
5336 /* remember the length up to here */
5337 prefix_len = vec_size(defname);
5339 /* Add it to the local scope */
5340 util_htset(vec_last(parser->variables), var->name, (void*)var);
5344 vec_last(parser->correct_variables),
5345 &vec_last(parser->correct_variables_score),
5349 /* now rename the global */
5350 ln = strlen(var->name);
5351 vec_append(defname, ln, var->name);
5352 ast_value_set_name(var, defname);
5354 /* push it to the to-be-generated globals */
5355 vec_push(parser->globals, (ast_expression*)var);
5357 /* same game for the vector members */
5359 for (i = 0; i < 3; ++i) {
5360 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5364 vec_last(parser->correct_variables),
5365 &vec_last(parser->correct_variables_score),
5369 vec_shrinkto(defname, prefix_len);
5370 ln = strlen(me[i]->name);
5371 vec_append(defname, ln, me[i]->name);
5372 ast_member_set_name(me[i], defname);
5374 vec_push(parser->globals, (ast_expression*)me[i]);
5379 vec_push(localblock->locals, var);
5380 parser_addlocal(parser, var->name, (ast_expression*)var);
5382 for (i = 0; i < 3; ++i) {
5383 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5384 ast_block_collect(localblock, (ast_expression*)me[i]);
5390 me[0] = me[1] = me[2] = NULL;
5395 if (var->expression.vtype == TYPE_ARRAY) {
5396 if (var->expression.count != (size_t)-1) {
5397 if (!create_array_accessors(parser, var))
5401 else if (!localblock && !nofields &&
5402 var->expression.vtype == TYPE_FIELD &&
5403 var->expression.next->vtype == TYPE_ARRAY)
5406 ast_expression *telem;
5408 ast_value *array = (ast_value*)var->expression.next;
5410 if (!ast_istype(var->expression.next, ast_value)) {
5411 parseerror(parser, "internal error: field element type must be an ast_value");
5415 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5416 if (!parser_create_array_field_setter(parser, array, name))
5419 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5420 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5421 tfield->expression.next = telem;
5422 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5423 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5431 if (parser->tok == ';') {
5432 ast_delete(basetype);
5433 if (!parser_next(parser)) {
5434 parseerror(parser, "error after variable declaration");
5440 if (parser->tok == ',')
5444 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5447 parseerror(parser, "missing comma or semicolon while parsing variables");
5451 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5452 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5453 "initializing expression turns variable `%s` into a constant in this standard",
5460 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5461 if (parser->tok != '=') {
5462 if (!strcmp(parser_tokval(parser), "break")) {
5463 if (!parser_next(parser)) {
5464 parseerror(parser, "error parsing break definition");
5467 (void)!parsewarning(parser, WARN_BREAKDEF, "break definition ignored (suggest removing it)");
5469 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5474 if (!parser_next(parser)) {
5475 parseerror(parser, "error parsing initializer");
5479 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5480 parseerror(parser, "expected '=' before function body in this standard");
5483 if (parser->tok == '#') {
5484 ast_function *func = NULL;
5485 ast_value *number = NULL;
5491 parseerror(parser, "cannot declare builtins within functions");
5494 if (var->expression.vtype != TYPE_FUNCTION) {
5495 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5498 if (!parser_next(parser)) {
5499 parseerror(parser, "expected builtin number");
5503 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5504 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5506 parseerror(parser, "builtin number expected");
5509 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5512 parseerror(parser, "builtin number must be a compile time constant");
5515 if (number->expression.vtype == TYPE_INTEGER)
5516 builtin_num = number->constval.vint;
5517 else if (number->expression.vtype == TYPE_FLOAT)
5518 builtin_num = number->constval.vfloat;
5521 parseerror(parser, "builtin number must be an integer constant");
5526 fractional = modff(builtin_num, &integral);
5527 if (builtin_num < 0 || fractional != 0) {
5528 parseerror(parser, "builtin number must be an integer greater than zero");
5532 /* we only want the integral part anyways */
5533 builtin_num = integral;
5534 } else if (parser->tok == TOKEN_INTCONST) {
5535 builtin_num = parser_token(parser)->constval.i;
5537 parseerror(parser, "builtin number must be a compile time constant");
5541 if (var->hasvalue) {
5542 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5543 "builtin `%s` has already been defined\n"
5544 " -> previous declaration here: %s:%i",
5545 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5549 func = ast_function_new(ast_ctx(var), var->name, var);
5551 parseerror(parser, "failed to allocate function for `%s`", var->name);
5554 vec_push(parser->functions, func);
5556 func->builtin = -builtin_num-1;
5559 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5560 ? (parser->tok != ',' && parser->tok != ';')
5561 : (!parser_next(parser)))
5563 parseerror(parser, "expected comma or semicolon");
5565 ast_function_delete(func);
5566 var->constval.vfunc = NULL;
5570 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
5573 /* Note that fteqcc and most others don't even *have*
5574 * local arrays, so this is not a high priority.
5576 parseerror(parser, "TODO: initializers for local arrays");
5580 var->hasvalue = true;
5581 if (!parse_array(parser, var))
5584 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
5587 parseerror(parser, "cannot declare functions within functions");
5592 ast_ctx(proto) = parser_ctx(parser);
5594 if (!parse_function_body(parser, var))
5596 ast_delete(basetype);
5597 for (i = 0; i < vec_size(parser->gotos); ++i)
5598 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5599 vec_free(parser->gotos);
5600 vec_free(parser->labels);
5603 ast_expression *cexp;
5606 cexp = parse_expression_leave(parser, true, false, false);
5611 cval = (ast_value*)cexp;
5612 if (cval != parser->nil &&
5613 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5616 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5620 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5621 qualifier != CV_VAR)
5623 var->cvq = CV_CONST;
5625 if (cval == parser->nil)
5626 var->expression.flags |= AST_FLAG_INITIALIZED;
5629 var->hasvalue = true;
5630 if (cval->expression.vtype == TYPE_STRING)
5631 var->constval.vstring = parser_strdup(cval->constval.vstring);
5632 else if (cval->expression.vtype == TYPE_FIELD)
5633 var->constval.vfield = cval;
5635 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5641 shunt sy = { NULL, NULL, NULL, NULL };
5644 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5645 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5646 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5647 if (!parser_sy_apply_operator(parser, &sy))
5650 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5651 parseerror(parser, "internal error: leaked operands");
5652 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5663 if (parser->tok == ',') {
5664 if (!parser_next(parser)) {
5665 parseerror(parser, "expected another variable");
5669 if (parser->tok != TOKEN_IDENT) {
5670 parseerror(parser, "expected another variable");
5673 var = ast_value_copy(basetype);
5675 ast_value_set_name(var, parser_tokval(parser));
5676 if (!parser_next(parser)) {
5677 parseerror(parser, "error parsing variable declaration");
5683 if (parser->tok != ';') {
5684 parseerror(parser, "missing semicolon after variables");
5688 if (!parser_next(parser)) {
5689 parseerror(parser, "parse error after variable declaration");
5693 ast_delete(basetype);
5697 if (cleanvar && var)
5699 ast_delete(basetype);
5703 ast_delete(basetype);
5704 if (cleanvar && var)
5706 if (me[0]) ast_member_delete(me[0]);
5707 if (me[1]) ast_member_delete(me[1]);
5708 if (me[2]) ast_member_delete(me[2]);
5712 static bool parser_global_statement(parser_t *parser)
5716 bool is_static = false;
5717 uint32_t qflags = 0;
5718 ast_value *istype = NULL;
5719 char *vstring = NULL;
5721 if (parser->tok == TOKEN_IDENT)
5722 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5724 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5726 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5728 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5730 if (cvq == CV_WRONG)
5732 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5734 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5736 return parse_enum(parser);
5738 else if (parser->tok == TOKEN_KEYWORD)
5740 if (!strcmp(parser_tokval(parser), "typedef")) {
5741 if (!parser_next(parser)) {
5742 parseerror(parser, "expected type definition after 'typedef'");
5745 return parse_typedef(parser);
5747 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5750 else if (parser->tok == '#')
5752 return parse_pragma(parser);
5754 else if (parser->tok == '$')
5756 if (!parser_next(parser)) {
5757 parseerror(parser, "parse error");
5763 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
5769 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5771 return util_crc16(old, str, strlen(str));
5774 static void progdefs_crc_file(const char *str)
5776 /* write to progdefs.h here */
5780 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5782 old = progdefs_crc_sum(old, str);
5783 progdefs_crc_file(str);
5787 static void generate_checksum(parser_t *parser, ir_builder *ir)
5789 uint16_t crc = 0xFFFF;
5793 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5794 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5796 progdefs_crc_file("\tint\tpad;\n");
5797 progdefs_crc_file("\tint\tofs_return[3];\n");
5798 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5799 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5800 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5801 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5802 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5803 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5804 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5805 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5807 for (i = 0; i < parser->crc_globals; ++i) {
5808 if (!ast_istype(parser->globals[i], ast_value))
5810 value = (ast_value*)(parser->globals[i]);
5811 switch (value->expression.vtype) {
5812 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5813 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5814 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5815 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5817 crc = progdefs_crc_both(crc, "\tint\t");
5820 crc = progdefs_crc_both(crc, value->name);
5821 crc = progdefs_crc_both(crc, ";\n");
5823 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5824 for (i = 0; i < parser->crc_fields; ++i) {
5825 if (!ast_istype(parser->fields[i], ast_value))
5827 value = (ast_value*)(parser->fields[i]);
5828 switch (value->expression.next->vtype) {
5829 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5830 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5831 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5832 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5834 crc = progdefs_crc_both(crc, "\tint\t");
5837 crc = progdefs_crc_both(crc, value->name);
5838 crc = progdefs_crc_both(crc, ";\n");
5840 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5841 ir->code->crc = crc;
5844 parser_t *parser_create()
5847 lex_ctx_t empty_ctx;
5850 parser = (parser_t*)mem_a(sizeof(parser_t));
5854 memset(parser, 0, sizeof(*parser));
5856 for (i = 0; i < operator_count; ++i) {
5857 if (operators[i].id == opid1('=')) {
5858 parser->assign_op = operators+i;
5862 if (!parser->assign_op) {
5863 printf("internal error: initializing parser: failed to find assign operator\n");
5868 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5869 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5870 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5871 vec_push(parser->_blocktypedefs, 0);
5873 parser->aliases = util_htnew(PARSER_HT_SIZE);
5876 vec_push(parser->correct_variables, correct_trie_new());
5877 vec_push(parser->correct_variables_score, NULL);
5879 empty_ctx.file = "<internal>";
5881 empty_ctx.column = 0;
5882 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
5883 parser->nil->cvq = CV_CONST;
5884 if (OPTS_FLAG(UNTYPED_NIL))
5885 util_htset(parser->htglobals, "nil", (void*)parser->nil);
5887 parser->max_param_count = 1;
5889 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
5890 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
5891 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
5893 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
5894 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
5895 parser->reserved_version->cvq = CV_CONST;
5896 parser->reserved_version->hasvalue = true;
5897 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
5898 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
5900 parser->reserved_version = NULL;
5903 parser->fold = fold_init (parser);
5904 parser->intrin = intrin_init(parser);
5908 static bool parser_compile(parser_t *parser)
5910 /* initial lexer/parser state */
5911 parser->lex->flags.noops = true;
5913 if (parser_next(parser))
5915 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
5917 if (!parser_global_statement(parser)) {
5918 if (parser->tok == TOKEN_EOF)
5919 parseerror(parser, "unexpected end of file");
5920 else if (compile_errors)
5921 parseerror(parser, "there have been errors, bailing out");
5922 lex_close(parser->lex);
5928 parseerror(parser, "parse error");
5929 lex_close(parser->lex);
5934 lex_close(parser->lex);
5937 return !compile_errors;
5940 bool parser_compile_file(parser_t *parser, const char *filename)
5942 parser->lex = lex_open(filename);
5944 con_err("failed to open file \"%s\"\n", filename);
5947 return parser_compile(parser);
5950 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
5952 parser->lex = lex_open_string(str, len, name);
5954 con_err("failed to create lexer for string \"%s\"\n", name);
5957 return parser_compile(parser);
5960 static void parser_remove_ast(parser_t *parser)
5963 if (parser->ast_cleaned)
5965 parser->ast_cleaned = true;
5966 for (i = 0; i < vec_size(parser->accessors); ++i) {
5967 ast_delete(parser->accessors[i]->constval.vfunc);
5968 parser->accessors[i]->constval.vfunc = NULL;
5969 ast_delete(parser->accessors[i]);
5971 for (i = 0; i < vec_size(parser->functions); ++i) {
5972 ast_delete(parser->functions[i]);
5974 for (i = 0; i < vec_size(parser->fields); ++i) {
5975 ast_delete(parser->fields[i]);
5977 for (i = 0; i < vec_size(parser->globals); ++i) {
5978 ast_delete(parser->globals[i]);
5980 vec_free(parser->accessors);
5981 vec_free(parser->functions);
5982 vec_free(parser->globals);
5983 vec_free(parser->fields);
5985 for (i = 0; i < vec_size(parser->variables); ++i)
5986 util_htdel(parser->variables[i]);
5987 vec_free(parser->variables);
5988 vec_free(parser->_blocklocals);
5989 vec_free(parser->_locals);
5992 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
5993 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
5995 vec_free(parser->correct_variables);
5996 vec_free(parser->correct_variables_score);
5998 for (i = 0; i < vec_size(parser->_typedefs); ++i)
5999 ast_delete(parser->_typedefs[i]);
6000 vec_free(parser->_typedefs);
6001 for (i = 0; i < vec_size(parser->typedefs); ++i)
6002 util_htdel(parser->typedefs[i]);
6003 vec_free(parser->typedefs);
6004 vec_free(parser->_blocktypedefs);
6006 vec_free(parser->_block_ctx);
6008 vec_free(parser->labels);
6009 vec_free(parser->gotos);
6010 vec_free(parser->breaks);
6011 vec_free(parser->continues);
6013 ast_value_delete(parser->nil);
6015 ast_value_delete(parser->const_vec[0]);
6016 ast_value_delete(parser->const_vec[1]);
6017 ast_value_delete(parser->const_vec[2]);
6019 if (parser->reserved_version)
6020 ast_value_delete(parser->reserved_version);
6022 util_htdel(parser->aliases);
6023 fold_cleanup(parser->fold);
6024 intrin_cleanup(parser->intrin);
6027 void parser_cleanup(parser_t *parser)
6029 parser_remove_ast(parser);
6033 bool parser_finish(parser_t *parser, const char *output)
6039 if (compile_errors) {
6040 con_out("*** there were compile errors\n");
6044 ir = ir_builder_new("gmqcc_out");
6046 con_out("failed to allocate builder\n");
6050 for (i = 0; i < vec_size(parser->fields); ++i) {
6053 if (!ast_istype(parser->fields[i], ast_value))
6055 field = (ast_value*)parser->fields[i];
6056 hasvalue = field->hasvalue;
6057 field->hasvalue = false;
6058 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6059 con_out("failed to generate field %s\n", field->name);
6060 ir_builder_delete(ir);
6065 ast_expression *subtype;
6066 field->hasvalue = true;
6067 subtype = field->expression.next;
6068 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6069 if (subtype->vtype == TYPE_FIELD)
6070 ifld->fieldtype = subtype->next->vtype;
6071 else if (subtype->vtype == TYPE_FUNCTION)
6072 ifld->outtype = subtype->next->vtype;
6073 (void)!ir_value_set_field(field->ir_v, ifld);
6076 for (i = 0; i < vec_size(parser->globals); ++i) {
6078 if (!ast_istype(parser->globals[i], ast_value))
6080 asvalue = (ast_value*)(parser->globals[i]);
6081 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6082 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6083 "unused global: `%s`", asvalue->name);
6085 if (!ast_global_codegen(asvalue, ir, false)) {
6086 con_out("failed to generate global %s\n", asvalue->name);
6087 ir_builder_delete(ir);
6091 /* Build function vararg accessor ast tree now before generating
6092 * immediates, because the accessors may add new immediates
6094 for (i = 0; i < vec_size(parser->functions); ++i) {
6095 ast_function *f = parser->functions[i];
6097 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6098 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6099 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6100 con_out("failed to generate vararg setter for %s\n", f->name);
6101 ir_builder_delete(ir);
6104 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6105 con_out("failed to generate vararg getter for %s\n", f->name);
6106 ir_builder_delete(ir);
6110 ast_delete(f->varargs);
6115 /* Now we can generate immediates */
6116 if (!fold_generate(parser->fold, ir))
6119 for (i = 0; i < vec_size(parser->globals); ++i) {
6121 if (!ast_istype(parser->globals[i], ast_value))
6123 asvalue = (ast_value*)(parser->globals[i]);
6124 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6126 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6127 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6128 "uninitialized constant: `%s`",
6130 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6131 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6132 "uninitialized global: `%s`",
6135 if (!ast_generate_accessors(asvalue, ir)) {
6136 ir_builder_delete(ir);
6140 for (i = 0; i < vec_size(parser->fields); ++i) {
6142 asvalue = (ast_value*)(parser->fields[i]->next);
6144 if (!ast_istype((ast_expression*)asvalue, ast_value))
6146 if (asvalue->expression.vtype != TYPE_ARRAY)
6148 if (!ast_generate_accessors(asvalue, ir)) {
6149 ir_builder_delete(ir);
6153 if (parser->reserved_version &&
6154 !ast_global_codegen(parser->reserved_version, ir, false))
6156 con_out("failed to generate reserved::version");
6157 ir_builder_delete(ir);
6160 for (i = 0; i < vec_size(parser->functions); ++i) {
6161 ast_function *f = parser->functions[i];
6162 if (!ast_function_codegen(f, ir)) {
6163 con_out("failed to generate function %s\n", f->name);
6164 ir_builder_delete(ir);
6169 generate_checksum(parser, ir);
6171 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6172 ir_builder_dump(ir, con_out);
6173 for (i = 0; i < vec_size(parser->functions); ++i) {
6174 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6175 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6176 ir_builder_delete(ir);
6180 parser_remove_ast(parser);
6182 if (compile_Werrors) {
6183 con_out("*** there were warnings treated as errors\n");
6184 compile_show_werrors();
6189 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6190 ir_builder_dump(ir, con_out);
6192 if (!ir_builder_generate(ir, output)) {
6193 con_out("*** failed to generate output file\n");
6194 ir_builder_delete(ir);
6198 ir_builder_delete(ir);