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 compile_error(ctx, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
315 op->op, (int)op->id);
319 vec_shrinkby(sy->ops, 1);
321 /* op(:?) has no input and no output */
325 vec_shrinkby(sy->out, op->operands);
326 for (i = 0; i < op->operands; ++i) {
327 exprs[i] = sy->out[vec_size(sy->out)+i].out;
328 blocks[i] = sy->out[vec_size(sy->out)+i].block;
329 asvalue[i] = (ast_value*)exprs[i];
331 if (exprs[i]->vtype == TYPE_NOEXPR &&
332 !(i != 0 && op->id == opid2('?',':')) &&
333 !(i == 1 && op->id == opid1('.')))
335 if (ast_istype(exprs[i], ast_label))
336 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
338 compile_error(ast_ctx(exprs[i]), "not an expression");
339 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
343 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
344 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
348 #define NotSameType(T) \
349 (exprs[0]->vtype != exprs[1]->vtype || \
350 exprs[0]->vtype != T)
354 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
358 if (exprs[0]->vtype == TYPE_VECTOR &&
359 exprs[1]->vtype == TYPE_NOEXPR)
361 if (exprs[1] == (ast_expression*)parser->const_vec[0])
362 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
363 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
364 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
365 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
366 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
368 compile_error(ctx, "access to invalid vector component");
372 else if (exprs[0]->vtype == TYPE_ENTITY) {
373 if (exprs[1]->vtype != TYPE_FIELD) {
374 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
377 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
379 else if (exprs[0]->vtype == TYPE_VECTOR) {
380 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
384 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
390 if (exprs[0]->vtype != TYPE_ARRAY &&
391 !(exprs[0]->vtype == TYPE_FIELD &&
392 exprs[0]->next->vtype == TYPE_ARRAY))
394 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
395 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
398 if (exprs[1]->vtype != TYPE_FLOAT) {
399 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
400 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
403 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
404 if (rotate_entfield_array_index_nodes(&out))
407 /* This is not broken in fteqcc anymore */
408 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
409 /* this error doesn't need to make us bail out */
410 (void)!parsewarning(parser, WARN_EXTENSIONS,
411 "accessing array-field members of an entity without parenthesis\n"
412 " -> this is an extension from -std=gmqcc");
419 if (vec_size(sy->paren) && vec_last(sy->paren) == PAREN_FUNC) {
420 vec_push(sy->out, syexp(ctx, exprs[0]));
421 vec_push(sy->out, syexp(ctx, exprs[1]));
422 vec_last(sy->argc)++;
426 if (!ast_block_add_expr(blocks[0], exprs[1]))
429 blocks[0] = ast_block_new(ctx);
430 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
431 !ast_block_add_expr(blocks[0], exprs[1]))
436 ast_block_set_type(blocks[0], exprs[1]);
438 vec_push(sy->out, syblock(ctx, blocks[0]));
445 if (!(out = fold_op(parser->fold, op, exprs))) {
446 switch (exprs[0]->vtype) {
448 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
449 (ast_expression*)parser->fold->imm_float[0],
453 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
454 (ast_expression*)parser->fold->imm_vector[0],
458 compile_error(ctx, "invalid types used in expression: cannot negate type %s",
459 type_name[exprs[0]->vtype]);
466 if (!(out = fold_op(parser->fold, op, exprs))) {
467 switch (exprs[0]->vtype) {
469 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
472 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
475 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
476 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
478 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
480 /* we don't constant-fold NOT for these types */
482 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
485 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
488 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
489 type_name[exprs[0]->vtype]);
496 if (exprs[0]->vtype != exprs[1]->vtype ||
497 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
499 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
500 type_name[exprs[0]->vtype],
501 type_name[exprs[1]->vtype]);
504 if (!(out = fold_op(parser->fold, op, exprs))) {
505 switch (exprs[0]->vtype) {
507 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
510 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
513 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
514 type_name[exprs[0]->vtype],
515 type_name[exprs[1]->vtype]);
521 if (exprs[0]->vtype != exprs[1]->vtype ||
522 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT))
524 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
525 type_name[exprs[1]->vtype],
526 type_name[exprs[0]->vtype]);
529 if (!(out = fold_op(parser->fold, op, exprs))) {
530 switch (exprs[0]->vtype) {
532 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
535 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
538 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
539 type_name[exprs[1]->vtype],
540 type_name[exprs[0]->vtype]);
546 if (exprs[0]->vtype != exprs[1]->vtype &&
547 !(exprs[0]->vtype == TYPE_VECTOR &&
548 exprs[1]->vtype == TYPE_FLOAT) &&
549 !(exprs[1]->vtype == TYPE_VECTOR &&
550 exprs[0]->vtype == TYPE_FLOAT)
553 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
554 type_name[exprs[1]->vtype],
555 type_name[exprs[0]->vtype]);
558 if (!(out = fold_op(parser->fold, op, exprs))) {
559 switch (exprs[0]->vtype) {
561 if (exprs[1]->vtype == TYPE_VECTOR)
562 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
564 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
567 if (exprs[1]->vtype == TYPE_FLOAT)
568 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
570 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
573 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
574 type_name[exprs[1]->vtype],
575 type_name[exprs[0]->vtype]);
582 if (exprs[1]->vtype != TYPE_FLOAT) {
583 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
584 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
585 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
588 if (!(out = fold_op(parser->fold, op, exprs))) {
589 if (exprs[0]->vtype == TYPE_FLOAT)
590 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
592 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
593 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
594 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
601 if (NotSameType(TYPE_FLOAT)) {
602 compile_error(ctx, "invalid types used in expression: cannot perform modulo operation between types %s and %s",
603 type_name[exprs[0]->vtype],
604 type_name[exprs[1]->vtype]);
606 } else if (!(out = fold_op(parser->fold, op, exprs))) {
607 /* generate a call to __builtin_mod */
608 ast_expression *mod = intrin_func(parser->intrin, "mod");
609 ast_call *call = NULL;
610 if (!mod) return false; /* can return null for missing floor */
612 call = ast_call_new(parser_ctx(parser), mod);
613 vec_push(call->params, exprs[0]);
614 vec_push(call->params, exprs[1]);
616 out = (ast_expression*)call;
621 compile_error(ctx, "%= is unimplemented");
627 if ( !(exprs[0]->vtype == TYPE_FLOAT && exprs[1]->vtype == TYPE_FLOAT) &&
628 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_FLOAT) &&
629 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_VECTOR))
631 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
632 type_name[exprs[0]->vtype],
633 type_name[exprs[1]->vtype]);
637 if (!(out = fold_op(parser->fold, op, exprs))) {
639 * IF the first expression is float, the following will be too
640 * since scalar ^ vector is not allowed.
642 if (exprs[0]->vtype == TYPE_FLOAT) {
643 out = (ast_expression*)ast_binary_new(ctx,
644 (op->id == opid1('^') ? VINSTR_BITXOR : op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
648 * The first is a vector: vector is allowed to bitop with vector and
649 * with scalar, branch here for the second operand.
651 if (exprs[1]->vtype == TYPE_VECTOR) {
653 * Bitop all the values of the vector components against the
654 * vectors components in question.
656 out = (ast_expression*)ast_binary_new(ctx,
657 (op->id == opid1('^') ? VINSTR_BITXOR_V : op->id == opid1('|') ? VINSTR_BITOR_V : VINSTR_BITAND_V),
660 out = (ast_expression*)ast_binary_new(ctx,
661 (op->id == opid1('^') ? VINSTR_BITXOR_VF : op->id == opid1('|') ? VINSTR_BITOR_VF : VINSTR_BITAND_VF),
670 case opid3('<','<','='):
671 case opid3('>','>','='):
672 if(!(out = fold_op(parser->fold, op, exprs))) {
673 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
679 generated_op += 1; /* INSTR_OR */
681 generated_op += INSTR_AND;
682 if (!(out = fold_op(parser->fold, op, exprs))) {
683 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
684 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
685 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
686 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
689 for (i = 0; i < 2; ++i) {
690 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->vtype == TYPE_VECTOR) {
691 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
693 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
695 exprs[i] = out; out = NULL;
696 if (OPTS_FLAG(PERL_LOGIC)) {
697 /* here we want to keep the right expressions' type */
701 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->vtype == TYPE_STRING) {
702 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
704 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
706 exprs[i] = out; out = NULL;
707 if (OPTS_FLAG(PERL_LOGIC)) {
708 /* here we want to keep the right expressions' type */
713 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
718 if (vec_last(sy->paren) != PAREN_TERNARY2) {
719 compile_error(ctx, "mismatched parenthesis/ternary");
723 if (!ast_compare_type(exprs[1], exprs[2])) {
724 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
725 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
726 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
729 if (!(out = fold_op(parser->fold, op, exprs)))
730 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
733 case opid2('*', '*'):
734 if (NotSameType(TYPE_FLOAT)) {
735 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
736 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
737 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
742 if (!(out = fold_op(parser->fold, op, exprs))) {
743 ast_call *gencall = ast_call_new(parser_ctx(parser), intrin_func(parser->intrin, "pow"));
744 vec_push(gencall->params, exprs[0]);
745 vec_push(gencall->params, exprs[1]);
746 out = (ast_expression*)gencall;
750 case opid3('<','=','>'): /* -1, 0, or 1 */
751 if (NotSameType(TYPE_FLOAT)) {
752 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
753 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
754 compile_error(ctx, "invalid types used in comparision: %s and %s",
760 if (!(out = fold_op(parser->fold, op, exprs))) {
761 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
763 eq->refs = AST_REF_NONE;
766 out = (ast_expression*)ast_ternary_new(ctx,
767 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
769 (ast_expression*)parser->fold->imm_float[2],
772 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
774 (ast_expression*)parser->fold->imm_float[0],
777 (ast_expression*)parser->fold->imm_float[1]
787 generated_op += 1; /* INSTR_GT */
789 generated_op += 1; /* INSTR_LT */
790 case opid2('>', '='):
791 generated_op += 1; /* INSTR_GE */
792 case opid2('<', '='):
793 generated_op += INSTR_LE;
794 if (NotSameType(TYPE_FLOAT)) {
795 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
796 type_name[exprs[0]->vtype],
797 type_name[exprs[1]->vtype]);
800 if (!(out = fold_op(parser->fold, op, exprs)))
801 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
803 case opid2('!', '='):
804 if (exprs[0]->vtype != exprs[1]->vtype) {
805 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
806 type_name[exprs[0]->vtype],
807 type_name[exprs[1]->vtype]);
810 if (!(out = fold_op(parser->fold, op, exprs)))
811 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->vtype], exprs[0], exprs[1]);
813 case opid2('=', '='):
814 if (exprs[0]->vtype != exprs[1]->vtype) {
815 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
816 type_name[exprs[0]->vtype],
817 type_name[exprs[1]->vtype]);
820 if (!(out = fold_op(parser->fold, op, exprs)))
821 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->vtype], exprs[0], exprs[1]);
825 if (ast_istype(exprs[0], ast_entfield)) {
826 ast_expression *field = ((ast_entfield*)exprs[0])->field;
827 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
828 exprs[0]->vtype == TYPE_FIELD &&
829 exprs[0]->next->vtype == TYPE_VECTOR)
831 assignop = type_storep_instr[TYPE_VECTOR];
834 assignop = type_storep_instr[exprs[0]->vtype];
835 if (assignop == VINSTR_END || !ast_compare_type(field->next, exprs[1]))
837 ast_type_to_string(field->next, ty1, sizeof(ty1));
838 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
839 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
840 field->next->vtype == TYPE_FUNCTION &&
841 exprs[1]->vtype == TYPE_FUNCTION)
843 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
844 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
847 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
852 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
853 exprs[0]->vtype == TYPE_FIELD &&
854 exprs[0]->next->vtype == TYPE_VECTOR)
856 assignop = type_store_instr[TYPE_VECTOR];
859 assignop = type_store_instr[exprs[0]->vtype];
862 if (assignop == VINSTR_END) {
863 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
864 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
865 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
867 else if (!ast_compare_type(exprs[0], exprs[1]))
869 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
870 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
871 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
872 exprs[0]->vtype == TYPE_FUNCTION &&
873 exprs[1]->vtype == TYPE_FUNCTION)
875 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
876 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
879 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
882 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
883 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
885 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
887 case opid3('+','+','P'):
888 case opid3('-','-','P'):
890 if (exprs[0]->vtype != TYPE_FLOAT) {
891 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
892 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
895 if (op->id == opid3('+','+','P'))
899 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
900 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
902 if (ast_istype(exprs[0], ast_entfield)) {
903 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
905 (ast_expression*)parser->fold->imm_float[1]);
907 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
909 (ast_expression*)parser->fold->imm_float[1]);
912 case opid3('S','+','+'):
913 case opid3('S','-','-'):
915 if (exprs[0]->vtype != TYPE_FLOAT) {
916 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
917 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
920 if (op->id == opid3('S','+','+')) {
927 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
928 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
930 if (ast_istype(exprs[0], ast_entfield)) {
931 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
933 (ast_expression*)parser->fold->imm_float[1]);
935 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
937 (ast_expression*)parser->fold->imm_float[1]);
941 out = (ast_expression*)ast_binary_new(ctx, subop,
943 (ast_expression*)parser->fold->imm_float[1]);
947 if (exprs[0]->vtype != exprs[1]->vtype ||
948 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
950 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
951 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
952 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
956 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
957 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
959 if (ast_istype(exprs[0], ast_entfield))
960 assignop = type_storep_instr[exprs[0]->vtype];
962 assignop = type_store_instr[exprs[0]->vtype];
963 switch (exprs[0]->vtype) {
965 out = (ast_expression*)ast_binstore_new(ctx, assignop,
966 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
970 out = (ast_expression*)ast_binstore_new(ctx, assignop,
971 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
975 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
976 type_name[exprs[0]->vtype],
977 type_name[exprs[1]->vtype]);
983 if (exprs[1]->vtype != TYPE_FLOAT ||
984 !(exprs[0]->vtype == TYPE_FLOAT ||
985 exprs[0]->vtype == TYPE_VECTOR))
987 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
988 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
989 compile_error(ctx, "invalid types used in expression: %s and %s",
993 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
994 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
996 if (ast_istype(exprs[0], ast_entfield))
997 assignop = type_storep_instr[exprs[0]->vtype];
999 assignop = type_store_instr[exprs[0]->vtype];
1000 switch (exprs[0]->vtype) {
1002 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1003 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1004 exprs[0], exprs[1]);
1007 if (op->id == opid2('*','=')) {
1008 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1009 exprs[0], exprs[1]);
1011 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1012 (ast_expression*)parser->fold->imm_float[1],
1015 compile_error(ctx, "internal error: failed to generate division");
1018 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1023 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1024 type_name[exprs[0]->vtype],
1025 type_name[exprs[1]->vtype]);
1029 case opid2('&','='):
1030 case opid2('|','='):
1031 case opid2('^','='):
1032 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1033 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1034 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1035 compile_error(ctx, "invalid types used in expression: %s and %s",
1039 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1040 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1042 if (ast_istype(exprs[0], ast_entfield))
1043 assignop = type_storep_instr[exprs[0]->vtype];
1045 assignop = type_store_instr[exprs[0]->vtype];
1046 if (exprs[0]->vtype == TYPE_FLOAT)
1047 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1048 (op->id == opid2('^','=') ? VINSTR_BITXOR : op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1049 exprs[0], exprs[1]);
1051 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1052 (op->id == opid2('^','=') ? VINSTR_BITXOR_V : op->id == opid2('&','=') ? VINSTR_BITAND_V : VINSTR_BITOR_V),
1053 exprs[0], exprs[1]);
1055 case opid3('&','~','='):
1056 /* This is like: a &= ~(b);
1057 * But QC has no bitwise-not, so we implement it as
1060 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1061 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1062 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1063 compile_error(ctx, "invalid types used in expression: %s and %s",
1067 if (ast_istype(exprs[0], ast_entfield))
1068 assignop = type_storep_instr[exprs[0]->vtype];
1070 assignop = type_store_instr[exprs[0]->vtype];
1071 if (exprs[0]->vtype == TYPE_FLOAT)
1072 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1074 out = (ast_expression*)ast_binary_new(ctx, VINSTR_BITAND_V, exprs[0], exprs[1]);
1077 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1078 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1080 if (exprs[0]->vtype == TYPE_FLOAT)
1081 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1083 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_V, exprs[0], out);
1084 asbinstore->keep_dest = true;
1085 out = (ast_expression*)asbinstore;
1088 case opid2('~', 'P'):
1089 if (exprs[0]->vtype != TYPE_FLOAT && exprs[0]->vtype != TYPE_VECTOR) {
1090 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1091 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1094 if (!(out = fold_op(parser->fold, op, exprs))) {
1095 if (exprs[0]->vtype == TYPE_FLOAT) {
1096 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, (ast_expression*)parser->fold->imm_float[2], exprs[0]);
1098 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, (ast_expression*)parser->fold->imm_vector[1], exprs[0]);
1105 compile_error(ctx, "failed to apply operator %s", op->op);
1109 vec_push(sy->out, syexp(ctx, out));
1113 static bool parser_close_call(parser_t *parser, shunt *sy)
1115 /* was a function call */
1116 ast_expression *fun;
1117 ast_value *funval = NULL;
1121 size_t paramcount, i;
1124 fid = vec_last(sy->ops).off;
1125 vec_shrinkby(sy->ops, 1);
1127 /* out[fid] is the function
1128 * everything above is parameters...
1130 if (!vec_size(sy->argc)) {
1131 parseerror(parser, "internal error: no argument counter available");
1135 paramcount = vec_last(sy->argc);
1138 if (vec_size(sy->out) < fid) {
1139 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1140 (unsigned long)vec_size(sy->out),
1142 (unsigned long)paramcount);
1147 * TODO handle this at the intrinsic level with an ast_intrinsic
1150 if ((fun = sy->out[fid].out) == intrin_debug_typestring(parser->intrin)) {
1152 if (fid+2 != vec_size(sy->out) ||
1153 vec_last(sy->out).block)
1155 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1158 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1159 ast_unref(vec_last(sy->out).out);
1160 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1161 (ast_expression*)fold_constgen_string(parser->fold, ty, false));
1162 vec_shrinkby(sy->out, 1);
1167 * Now we need to determine if the function that is being called is
1168 * an intrinsic so we can evaluate if the arguments to it are constant
1169 * and than fruitfully fold them.
1171 #define fold_can_1(X) \
1172 (ast_istype(((ast_expression*)(X)), ast_value) && (X)->hasvalue && ((X)->cvq == CV_CONST) && \
1173 ((ast_expression*)(X))->vtype != TYPE_FUNCTION)
1175 if (fid + 1 < vec_size(sy->out))
1178 for (i = 0; i < paramcount; ++i) {
1179 if (!fold_can_1((ast_value*)sy->out[fid + 1 + i].out)) {
1186 * All is well which ends well, if we make it into here we can ignore the
1187 * intrinsic call and just evaluate it i.e constant fold it.
1189 if (fold && ast_istype(fun, ast_value) && ((ast_value*)fun)->intrinsic) {
1190 ast_expression **exprs = NULL;
1191 ast_expression *foldval = NULL;
1193 for (i = 0; i < paramcount; i++)
1194 vec_push(exprs, sy->out[fid+1 + i].out);
1196 if (!(foldval = intrin_fold(parser->intrin, (ast_value*)fun, exprs))) {
1202 * Blub: what sorts of unreffing and resizing of
1203 * sy->out should I be doing here?
1205 sy->out[fid] = syexp(foldval->node.context, foldval);
1206 vec_shrinkby(sy->out, 1);
1213 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1218 if (fid+1 + paramcount != vec_size(sy->out)) {
1219 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1220 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1224 for (i = 0; i < paramcount; ++i)
1225 vec_push(call->params, sy->out[fid+1 + i].out);
1226 vec_shrinkby(sy->out, paramcount);
1227 (void)!ast_call_check_types(call, parser->function->vtype->expression.varparam);
1228 if (parser->max_param_count < paramcount)
1229 parser->max_param_count = paramcount;
1231 if (ast_istype(fun, ast_value)) {
1232 funval = (ast_value*)fun;
1233 if ((fun->flags & AST_FLAG_VARIADIC) &&
1234 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1236 call->va_count = (ast_expression*)fold_constgen_float(parser->fold, (qcfloat_t)paramcount);
1240 /* overwrite fid, the function, with a call */
1241 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1243 if (fun->vtype != TYPE_FUNCTION) {
1244 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1249 parseerror(parser, "could not determine function return type");
1252 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1254 if (fun->flags & AST_FLAG_DEPRECATED) {
1256 return !parsewarning(parser, WARN_DEPRECATED,
1257 "call to function (which is marked deprecated)\n",
1258 "-> it has been declared here: %s:%i",
1259 ast_ctx(fun).file, ast_ctx(fun).line);
1262 return !parsewarning(parser, WARN_DEPRECATED,
1263 "call to `%s` (which is marked deprecated)\n"
1264 "-> `%s` declared here: %s:%i",
1265 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1267 return !parsewarning(parser, WARN_DEPRECATED,
1268 "call to `%s` (deprecated: %s)\n"
1269 "-> `%s` declared here: %s:%i",
1270 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1274 if (vec_size(fun->params) != paramcount &&
1275 !((fun->flags & AST_FLAG_VARIADIC) &&
1276 vec_size(fun->params) < paramcount))
1278 const char *fewmany = (vec_size(fun->params) > paramcount) ? "few" : "many";
1280 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1281 "too %s parameters for call to %s: expected %i, got %i\n"
1282 " -> `%s` has been declared here: %s:%i",
1283 fewmany, fval->name, (int)vec_size(fun->params), (int)paramcount,
1284 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1286 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1287 "too %s parameters for function call: expected %i, got %i\n"
1288 " -> it has been declared here: %s:%i",
1289 fewmany, (int)vec_size(fun->params), (int)paramcount,
1290 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1297 static bool parser_close_paren(parser_t *parser, shunt *sy)
1299 if (!vec_size(sy->ops)) {
1300 parseerror(parser, "unmatched closing paren");
1304 while (vec_size(sy->ops)) {
1305 if (vec_last(sy->ops).isparen) {
1306 if (vec_last(sy->paren) == PAREN_FUNC) {
1308 if (!parser_close_call(parser, sy))
1312 if (vec_last(sy->paren) == PAREN_EXPR) {
1314 if (!vec_size(sy->out)) {
1315 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1316 vec_shrinkby(sy->ops, 1);
1319 vec_shrinkby(sy->ops, 1);
1322 if (vec_last(sy->paren) == PAREN_INDEX) {
1324 /* pop off the parenthesis */
1325 vec_shrinkby(sy->ops, 1);
1326 /* then apply the index operator */
1327 if (!parser_sy_apply_operator(parser, sy))
1331 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1332 vec_last(sy->paren) = PAREN_TERNARY2;
1333 /* pop off the parenthesis */
1334 vec_shrinkby(sy->ops, 1);
1337 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1340 if (!parser_sy_apply_operator(parser, sy))
1346 static void parser_reclassify_token(parser_t *parser)
1349 if (parser->tok >= TOKEN_START)
1351 for (i = 0; i < operator_count; ++i) {
1352 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1353 parser->tok = TOKEN_OPERATOR;
1359 static ast_expression* parse_vararg_do(parser_t *parser)
1361 ast_expression *idx, *out;
1363 ast_value *funtype = parser->function->vtype;
1364 lex_ctx_t ctx = parser_ctx(parser);
1366 if (!parser->function->varargs) {
1367 parseerror(parser, "function has no variable argument list");
1371 if (!parser_next(parser) || parser->tok != '(') {
1372 parseerror(parser, "expected parameter index and type in parenthesis");
1375 if (!parser_next(parser)) {
1376 parseerror(parser, "error parsing parameter index");
1380 idx = parse_expression_leave(parser, true, false, false);
1384 if (parser->tok != ',') {
1385 if (parser->tok != ')') {
1387 parseerror(parser, "expected comma after parameter index");
1390 /* vararg piping: ...(start) */
1391 out = (ast_expression*)ast_argpipe_new(ctx, idx);
1395 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1397 parseerror(parser, "expected typename for vararg");
1401 typevar = parse_typename(parser, NULL, NULL);
1407 if (parser->tok != ')') {
1409 ast_delete(typevar);
1410 parseerror(parser, "expected closing paren");
1414 if (funtype->expression.varparam &&
1415 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1419 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1420 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1421 compile_error(ast_ctx(typevar),
1422 "function was declared to take varargs of type `%s`, requested type is: %s",
1426 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1427 ast_type_adopt(out, typevar);
1428 ast_delete(typevar);
1432 static ast_expression* parse_vararg(parser_t *parser)
1434 bool old_noops = parser->lex->flags.noops;
1436 ast_expression *out;
1438 parser->lex->flags.noops = true;
1439 out = parse_vararg_do(parser);
1441 parser->lex->flags.noops = old_noops;
1445 /* not to be exposed */
1446 bool ftepp_predef_exists(const char *name);
1447 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1449 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1450 parser->tok == TOKEN_IDENT &&
1451 !strcmp(parser_tokval(parser), "_"))
1453 /* a translatable string */
1456 parser->lex->flags.noops = true;
1457 if (!parser_next(parser) || parser->tok != '(') {
1458 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1461 parser->lex->flags.noops = false;
1462 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1463 parseerror(parser, "expected a constant string in translatable-string extension");
1466 val = (ast_value*)fold_constgen_string(parser->fold, parser_tokval(parser), true);
1469 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1471 if (!parser_next(parser) || parser->tok != ')') {
1472 parseerror(parser, "expected closing paren after translatable string");
1477 else if (parser->tok == TOKEN_DOTS)
1480 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1481 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1484 va = parse_vararg(parser);
1487 vec_push(sy->out, syexp(parser_ctx(parser), va));
1490 else if (parser->tok == TOKEN_FLOATCONST) {
1491 ast_expression *val = fold_constgen_float(parser->fold, (parser_token(parser)->constval.f));
1494 vec_push(sy->out, syexp(parser_ctx(parser), val));
1497 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1498 ast_expression *val = fold_constgen_float(parser->fold, (qcfloat_t)(parser_token(parser)->constval.i));
1501 vec_push(sy->out, syexp(parser_ctx(parser), val));
1504 else if (parser->tok == TOKEN_STRINGCONST) {
1505 ast_expression *val = fold_constgen_string(parser->fold, parser_tokval(parser), false);
1508 vec_push(sy->out, syexp(parser_ctx(parser), val));
1511 else if (parser->tok == TOKEN_VECTORCONST) {
1512 ast_expression *val = fold_constgen_vector(parser->fold, parser_token(parser)->constval.v);
1515 vec_push(sy->out, syexp(parser_ctx(parser), val));
1518 else if (parser->tok == TOKEN_IDENT)
1520 const char *ctoken = parser_tokval(parser);
1521 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1522 ast_expression *var;
1523 /* a_vector.{x,y,z} */
1524 if (!vec_size(sy->ops) ||
1525 !vec_last(sy->ops).etype ||
1526 operators[vec_last(sy->ops).etype-1].id != opid1('.'))
1528 /* When adding more intrinsics, fix the above condition */
1531 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1533 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1535 var = parser_find_var(parser, parser_tokval(parser));
1537 var = parser_find_field(parser, parser_tokval(parser));
1539 if (!var && with_labels) {
1540 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1542 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1543 var = (ast_expression*)lbl;
1544 vec_push(parser->labels, lbl);
1547 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
1548 var = (ast_expression*)fold_constgen_string(parser->fold, parser->function->name, false);
1551 * now we try for the real intrinsic hashtable. If the string
1552 * begins with __builtin, we simply skip past it, otherwise we
1553 * use the identifier as is.
1555 if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
1556 var = intrin_func(parser->intrin, parser_tokval(parser));
1560 char *correct = NULL;
1564 * sometimes people use preprocessing predefs without enabling them
1565 * i've done this thousands of times already myself. Lets check for
1566 * it in the predef table. And diagnose it better :)
1568 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
1569 parseerror(parser, "unexpected identifier: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1574 * TODO: determine the best score for the identifier: be it
1575 * a variable, a field.
1577 * We should also consider adding correction tables for
1578 * other things as well.
1580 if (OPTS_OPTION_BOOL(OPTION_CORRECTION) && strlen(parser_tokval(parser)) <= 16) {
1582 correct_init(&corr);
1584 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1585 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1586 if (strcmp(correct, parser_tokval(parser))) {
1593 correct_free(&corr);
1596 parseerror(parser, "unexpected identifier: %s (did you mean %s?)", parser_tokval(parser), correct);
1601 parseerror(parser, "unexpected identifier: %s", parser_tokval(parser));
1607 if (ast_istype(var, ast_value)) {
1608 ((ast_value*)var)->uses++;
1610 else if (ast_istype(var, ast_member)) {
1611 ast_member *mem = (ast_member*)var;
1612 if (ast_istype(mem->owner, ast_value))
1613 ((ast_value*)(mem->owner))->uses++;
1616 vec_push(sy->out, syexp(parser_ctx(parser), var));
1619 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1623 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1625 ast_expression *expr = NULL;
1628 bool wantop = false;
1629 /* only warn once about an assignment in a truth value because the current code
1630 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1632 bool warn_parenthesis = true;
1634 /* count the parens because an if starts with one, so the
1635 * end of a condition is an unmatched closing paren
1639 memset(&sy, 0, sizeof(sy));
1641 parser->lex->flags.noops = false;
1643 parser_reclassify_token(parser);
1647 if (parser->tok == TOKEN_TYPENAME) {
1648 parseerror(parser, "unexpected typename `%s`", parser_tokval(parser));
1652 if (parser->tok == TOKEN_OPERATOR)
1654 /* classify the operator */
1655 const oper_info *op;
1656 const oper_info *olast = NULL;
1658 for (o = 0; o < operator_count; ++o) {
1659 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1660 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1661 !strcmp(parser_tokval(parser), operators[o].op))
1666 if (o == operator_count) {
1667 compile_error(parser_ctx(parser), "unknown operator: %s", parser_tokval(parser));
1670 /* found an operator */
1673 /* when declaring variables, a comma starts a new variable */
1674 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
1675 /* fixup the token */
1680 /* a colon without a pervious question mark cannot be a ternary */
1681 if (!ternaries && op->id == opid2(':','?')) {
1686 if (op->id == opid1(',')) {
1687 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1688 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1692 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1693 olast = &operators[vec_last(sy.ops).etype-1];
1695 #define IsAssignOp(x) (\
1696 (x) == opid1('=') || \
1697 (x) == opid2('+','=') || \
1698 (x) == opid2('-','=') || \
1699 (x) == opid2('*','=') || \
1700 (x) == opid2('/','=') || \
1701 (x) == opid2('%','=') || \
1702 (x) == opid2('&','=') || \
1703 (x) == opid2('|','=') || \
1704 (x) == opid3('&','~','=') \
1706 if (warn_parenthesis) {
1707 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1708 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1709 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
1712 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1713 warn_parenthesis = false;
1716 if (olast && olast->id != op->id) {
1717 if ((op->id == opid1('&') || op->id == opid1('|') || op->id == opid1('^')) &&
1718 (olast->id == opid1('&') || olast->id == opid1('|') || olast->id == opid1('^')))
1720 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around bitwise operations");
1721 warn_parenthesis = false;
1723 else if ((op->id == opid2('&','&') || op->id == opid2('|','|')) &&
1724 (olast->id == opid2('&','&') || olast->id == opid2('|','|')))
1726 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around logical operations");
1727 warn_parenthesis = false;
1733 (op->prec < olast->prec) ||
1734 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1736 if (!parser_sy_apply_operator(parser, &sy))
1738 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1739 olast = &operators[vec_last(sy.ops).etype-1];
1744 if (op->id == opid1('(')) {
1746 size_t sycount = vec_size(sy.out);
1747 /* we expected an operator, this is the function-call operator */
1748 vec_push(sy.paren, PAREN_FUNC);
1749 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
1750 vec_push(sy.argc, 0);
1752 vec_push(sy.paren, PAREN_EXPR);
1753 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1756 } else if (op->id == opid1('[')) {
1758 parseerror(parser, "unexpected array subscript");
1761 vec_push(sy.paren, PAREN_INDEX);
1762 /* push both the operator and the paren, this makes life easier */
1763 vec_push(sy.ops, syop(parser_ctx(parser), op));
1764 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1766 } else if (op->id == opid2('?',':')) {
1767 vec_push(sy.ops, syop(parser_ctx(parser), op));
1768 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1771 vec_push(sy.paren, PAREN_TERNARY1);
1772 } else if (op->id == opid2(':','?')) {
1773 if (!vec_size(sy.paren)) {
1774 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1777 if (vec_last(sy.paren) != PAREN_TERNARY1) {
1778 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1781 if (!parser_close_paren(parser, &sy))
1783 vec_push(sy.ops, syop(parser_ctx(parser), op));
1787 vec_push(sy.ops, syop(parser_ctx(parser), op));
1788 wantop = !!(op->flags & OP_SUFFIX);
1791 else if (parser->tok == ')') {
1792 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1793 if (!parser_sy_apply_operator(parser, &sy))
1796 if (!vec_size(sy.paren))
1799 if (vec_last(sy.paren) == PAREN_TERNARY1) {
1800 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
1803 if (!parser_close_paren(parser, &sy))
1806 /* must be a function call without parameters */
1807 if (vec_last(sy.paren) != PAREN_FUNC) {
1808 parseerror(parser, "closing paren in invalid position");
1811 if (!parser_close_paren(parser, &sy))
1816 else if (parser->tok == '(') {
1817 parseerror(parser, "internal error: '(' should be classified as operator");
1820 else if (parser->tok == '[') {
1821 parseerror(parser, "internal error: '[' should be classified as operator");
1824 else if (parser->tok == ']') {
1825 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1826 if (!parser_sy_apply_operator(parser, &sy))
1829 if (!vec_size(sy.paren))
1831 if (vec_last(sy.paren) != PAREN_INDEX) {
1832 parseerror(parser, "mismatched parentheses, unexpected ']'");
1835 if (!parser_close_paren(parser, &sy))
1840 if (!parse_sya_operand(parser, &sy, with_labels))
1843 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
1844 vec_last(sy.argc)++;
1849 /* in this case we might want to allow constant string concatenation */
1850 bool concatenated = false;
1851 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
1852 ast_expression *lexpr = vec_last(sy.out).out;
1853 if (ast_istype(lexpr, ast_value)) {
1854 ast_value *last = (ast_value*)lexpr;
1855 if (last->isimm == true && last->cvq == CV_CONST &&
1856 last->hasvalue && last->expression.vtype == TYPE_STRING)
1858 char *newstr = NULL;
1859 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
1860 vec_last(sy.out).out = (ast_expression*)fold_constgen_string(parser->fold, newstr, false);
1862 concatenated = true;
1866 if (!concatenated) {
1867 parseerror(parser, "expected operator or end of statement");
1872 if (!parser_next(parser)) {
1875 if (parser->tok == ';' ||
1876 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
1877 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
1883 while (vec_size(sy.ops)) {
1884 if (!parser_sy_apply_operator(parser, &sy))
1888 parser->lex->flags.noops = true;
1889 if (vec_size(sy.out) != 1) {
1890 parseerror(parser, "expression with not 1 but %lu output values...", (unsigned long) vec_size(sy.out));
1893 expr = sy.out[0].out;
1896 if (vec_size(sy.paren)) {
1897 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
1905 parser->lex->flags.noops = true;
1906 for (i = 0; i < vec_size(sy.out); ++i) {
1908 ast_unref(sy.out[i].out);
1917 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
1919 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
1922 if (parser->tok != ';') {
1923 parseerror(parser, "semicolon expected after expression");
1927 if (!parser_next(parser)) {
1934 static void parser_enterblock(parser_t *parser)
1936 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1937 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1938 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1939 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1940 vec_push(parser->_block_ctx, parser_ctx(parser));
1943 vec_push(parser->correct_variables, correct_trie_new());
1944 vec_push(parser->correct_variables_score, NULL);
1947 static bool parser_leaveblock(parser_t *parser)
1950 size_t locals, typedefs;
1952 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1953 parseerror(parser, "internal error: parser_leaveblock with no block");
1957 util_htdel(vec_last(parser->variables));
1958 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
1960 vec_pop(parser->variables);
1961 vec_pop(parser->correct_variables);
1962 vec_pop(parser->correct_variables_score);
1963 if (!vec_size(parser->_blocklocals)) {
1964 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1968 locals = vec_last(parser->_blocklocals);
1969 vec_pop(parser->_blocklocals);
1970 while (vec_size(parser->_locals) != locals) {
1971 ast_expression *e = vec_last(parser->_locals);
1972 ast_value *v = (ast_value*)e;
1973 vec_pop(parser->_locals);
1974 if (ast_istype(e, ast_value) && !v->uses) {
1975 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
1980 typedefs = vec_last(parser->_blocktypedefs);
1981 while (vec_size(parser->_typedefs) != typedefs) {
1982 ast_delete(vec_last(parser->_typedefs));
1983 vec_pop(parser->_typedefs);
1985 util_htdel(vec_last(parser->typedefs));
1986 vec_pop(parser->typedefs);
1988 vec_pop(parser->_block_ctx);
1993 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1995 vec_push(parser->_locals, e);
1996 util_htset(vec_last(parser->variables), name, (void*)e);
2000 vec_last(parser->correct_variables),
2001 &vec_last(parser->correct_variables_score),
2006 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2008 vec_push(parser->globals, e);
2009 util_htset(parser->htglobals, name, e);
2013 parser->correct_variables[0],
2014 &parser->correct_variables_score[0],
2019 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2023 ast_expression *prev;
2025 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2027 ast_type_to_string(cond, ty, sizeof(ty));
2028 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2031 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2034 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2037 parseerror(parser, "internal error: failed to process condition");
2042 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2044 /* vector types need to be cast to true booleans */
2045 ast_binary *bin = (ast_binary*)cond;
2046 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2048 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2050 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2053 parseerror(parser, "internal error: failed to process condition");
2060 unary = (ast_unary*)cond;
2061 /* ast_istype dereferences cond, should test here for safety */
2062 while (cond && ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2064 cond = unary->operand;
2065 unary->operand = NULL;
2068 unary = (ast_unary*)cond;
2072 parseerror(parser, "internal error: failed to process condition");
2074 if (ifnot) *_ifnot = !*_ifnot;
2078 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2081 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2084 lex_ctx_t ctx = parser_ctx(parser);
2086 (void)block; /* not touching */
2088 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2089 if (!parser_next(parser)) {
2090 parseerror(parser, "expected condition or 'not'");
2093 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2095 if (!parser_next(parser)) {
2096 parseerror(parser, "expected condition in parenthesis");
2100 if (parser->tok != '(') {
2101 parseerror(parser, "expected 'if' condition in parenthesis");
2104 /* parse into the expression */
2105 if (!parser_next(parser)) {
2106 parseerror(parser, "expected 'if' condition after opening paren");
2109 /* parse the condition */
2110 cond = parse_expression_leave(parser, false, true, false);
2114 if (parser->tok != ')') {
2115 parseerror(parser, "expected closing paren after 'if' condition");
2119 /* parse into the 'then' branch */
2120 if (!parser_next(parser)) {
2121 parseerror(parser, "expected statement for on-true branch of 'if'");
2125 if (!parse_statement_or_block(parser, &ontrue)) {
2130 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2131 /* check for an else */
2132 if (!strcmp(parser_tokval(parser), "else")) {
2133 /* parse into the 'else' branch */
2134 if (!parser_next(parser)) {
2135 parseerror(parser, "expected on-false branch after 'else'");
2140 if (!parse_statement_or_block(parser, &onfalse)) {
2147 cond = process_condition(parser, cond, &ifnot);
2149 if (ontrue) ast_delete(ontrue);
2150 if (onfalse) ast_delete(onfalse);
2155 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2157 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2158 *out = (ast_expression*)ifthen;
2162 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2163 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2168 /* skip the 'while' and get the body */
2169 if (!parser_next(parser)) {
2170 if (OPTS_FLAG(LOOP_LABELS))
2171 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2173 parseerror(parser, "expected 'while' condition in parenthesis");
2177 if (parser->tok == ':') {
2178 if (!OPTS_FLAG(LOOP_LABELS))
2179 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2180 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2181 parseerror(parser, "expected loop label");
2184 label = util_strdup(parser_tokval(parser));
2185 if (!parser_next(parser)) {
2187 parseerror(parser, "expected 'while' condition in parenthesis");
2192 if (parser->tok != '(') {
2193 parseerror(parser, "expected 'while' condition in parenthesis");
2197 vec_push(parser->breaks, label);
2198 vec_push(parser->continues, label);
2200 rv = parse_while_go(parser, block, out);
2203 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2204 parseerror(parser, "internal error: label stack corrupted");
2210 vec_pop(parser->breaks);
2211 vec_pop(parser->continues);
2216 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2219 ast_expression *cond, *ontrue;
2223 lex_ctx_t ctx = parser_ctx(parser);
2225 (void)block; /* not touching */
2227 /* parse into the expression */
2228 if (!parser_next(parser)) {
2229 parseerror(parser, "expected 'while' condition after opening paren");
2232 /* parse the condition */
2233 cond = parse_expression_leave(parser, false, true, false);
2237 if (parser->tok != ')') {
2238 parseerror(parser, "expected closing paren after 'while' condition");
2242 /* parse into the 'then' branch */
2243 if (!parser_next(parser)) {
2244 parseerror(parser, "expected while-loop body");
2248 if (!parse_statement_or_block(parser, &ontrue)) {
2253 cond = process_condition(parser, cond, &ifnot);
2258 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2259 *out = (ast_expression*)aloop;
2263 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2264 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2269 /* skip the 'do' and get the body */
2270 if (!parser_next(parser)) {
2271 if (OPTS_FLAG(LOOP_LABELS))
2272 parseerror(parser, "expected loop label or body");
2274 parseerror(parser, "expected loop body");
2278 if (parser->tok == ':') {
2279 if (!OPTS_FLAG(LOOP_LABELS))
2280 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2281 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2282 parseerror(parser, "expected loop label");
2285 label = util_strdup(parser_tokval(parser));
2286 if (!parser_next(parser)) {
2288 parseerror(parser, "expected loop body");
2293 vec_push(parser->breaks, label);
2294 vec_push(parser->continues, label);
2296 rv = parse_dowhile_go(parser, block, out);
2299 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2300 parseerror(parser, "internal error: label stack corrupted");
2303 * Test for NULL otherwise ast_delete dereferences null pointer
2311 vec_pop(parser->breaks);
2312 vec_pop(parser->continues);
2317 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2320 ast_expression *cond, *ontrue;
2324 lex_ctx_t ctx = parser_ctx(parser);
2326 (void)block; /* not touching */
2328 if (!parse_statement_or_block(parser, &ontrue))
2331 /* expect the "while" */
2332 if (parser->tok != TOKEN_KEYWORD ||
2333 strcmp(parser_tokval(parser), "while"))
2335 parseerror(parser, "expected 'while' and condition");
2340 /* skip the 'while' and check for opening paren */
2341 if (!parser_next(parser) || parser->tok != '(') {
2342 parseerror(parser, "expected 'while' condition in parenthesis");
2346 /* parse into the expression */
2347 if (!parser_next(parser)) {
2348 parseerror(parser, "expected 'while' condition after opening paren");
2352 /* parse the condition */
2353 cond = parse_expression_leave(parser, false, true, false);
2357 if (parser->tok != ')') {
2358 parseerror(parser, "expected closing paren after 'while' condition");
2364 if (!parser_next(parser) || parser->tok != ';') {
2365 parseerror(parser, "expected semicolon after condition");
2371 if (!parser_next(parser)) {
2372 parseerror(parser, "parse error");
2378 cond = process_condition(parser, cond, &ifnot);
2383 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2384 *out = (ast_expression*)aloop;
2388 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2389 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2394 /* skip the 'for' and check for opening paren */
2395 if (!parser_next(parser)) {
2396 if (OPTS_FLAG(LOOP_LABELS))
2397 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2399 parseerror(parser, "expected 'for' expressions in parenthesis");
2403 if (parser->tok == ':') {
2404 if (!OPTS_FLAG(LOOP_LABELS))
2405 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2406 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2407 parseerror(parser, "expected loop label");
2410 label = util_strdup(parser_tokval(parser));
2411 if (!parser_next(parser)) {
2413 parseerror(parser, "expected 'for' expressions in parenthesis");
2418 if (parser->tok != '(') {
2419 parseerror(parser, "expected 'for' expressions in parenthesis");
2423 vec_push(parser->breaks, label);
2424 vec_push(parser->continues, label);
2426 rv = parse_for_go(parser, block, out);
2429 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2430 parseerror(parser, "internal error: label stack corrupted");
2436 vec_pop(parser->breaks);
2437 vec_pop(parser->continues);
2441 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2444 ast_expression *initexpr, *cond, *increment, *ontrue;
2449 lex_ctx_t ctx = parser_ctx(parser);
2451 parser_enterblock(parser);
2458 /* parse into the expression */
2459 if (!parser_next(parser)) {
2460 parseerror(parser, "expected 'for' initializer after opening paren");
2465 if (parser->tok == TOKEN_IDENT)
2466 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2468 if (typevar || parser->tok == TOKEN_TYPENAME) {
2470 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2471 if (parsewarning(parser, WARN_EXTENSIONS,
2472 "current standard does not allow variable declarations in for-loop initializers"))
2476 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2479 else if (parser->tok != ';')
2481 initexpr = parse_expression_leave(parser, false, false, false);
2486 /* move on to condition */
2487 if (parser->tok != ';') {
2488 parseerror(parser, "expected semicolon after for-loop initializer");
2491 if (!parser_next(parser)) {
2492 parseerror(parser, "expected for-loop condition");
2496 /* parse the condition */
2497 if (parser->tok != ';') {
2498 cond = parse_expression_leave(parser, false, true, false);
2503 /* move on to incrementor */
2504 if (parser->tok != ';') {
2505 parseerror(parser, "expected semicolon after for-loop initializer");
2508 if (!parser_next(parser)) {
2509 parseerror(parser, "expected for-loop condition");
2513 /* parse the incrementor */
2514 if (parser->tok != ')') {
2515 lex_ctx_t condctx = parser_ctx(parser);
2516 increment = parse_expression_leave(parser, false, false, false);
2519 if (!ast_side_effects(increment)) {
2520 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2526 if (parser->tok != ')') {
2527 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2530 /* parse into the 'then' branch */
2531 if (!parser_next(parser)) {
2532 parseerror(parser, "expected for-loop body");
2535 if (!parse_statement_or_block(parser, &ontrue))
2539 cond = process_condition(parser, cond, &ifnot);
2543 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2544 *out = (ast_expression*)aloop;
2546 if (!parser_leaveblock(parser)) {
2552 if (initexpr) ast_unref(initexpr);
2553 if (cond) ast_unref(cond);
2554 if (increment) ast_unref(increment);
2555 (void)!parser_leaveblock(parser);
2559 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2561 ast_expression *exp = NULL;
2562 ast_expression *var = NULL;
2563 ast_return *ret = NULL;
2564 ast_value *retval = parser->function->return_value;
2565 ast_value *expected = parser->function->vtype;
2567 lex_ctx_t ctx = parser_ctx(parser);
2569 (void)block; /* not touching */
2571 if (!parser_next(parser)) {
2572 parseerror(parser, "expected return expression");
2576 /* return assignments */
2577 if (parser->tok == '=') {
2578 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
2579 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
2583 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
2585 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
2586 parseerror(parser, "invalid return type: `%s'", ty1);
2590 if (!parser_next(parser)) {
2591 parseerror(parser, "expected return assignment expression");
2595 if (!(exp = parse_expression_leave(parser, false, false, false)))
2598 /* prepare the return value */
2600 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
2601 ast_type_adopt(retval, expected->expression.next);
2602 parser->function->return_value = retval;
2605 if (!ast_compare_type(exp, (ast_expression*)retval)) {
2606 char ty1[1024], ty2[1024];
2607 ast_type_to_string(exp, ty1, sizeof(ty1));
2608 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
2609 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
2612 /* store to 'return' local variable */
2613 var = (ast_expression*)ast_store_new(
2615 type_store_instr[expected->expression.next->vtype],
2616 (ast_expression*)retval, exp);
2623 if (parser->tok != ';')
2624 parseerror(parser, "missing semicolon after return assignment");
2625 else if (!parser_next(parser))
2626 parseerror(parser, "parse error after return assignment");
2632 if (parser->tok != ';') {
2633 exp = parse_expression(parser, false, false);
2637 if (exp->vtype != TYPE_NIL &&
2638 exp->vtype != ((ast_expression*)expected)->next->vtype)
2640 parseerror(parser, "return with invalid expression");
2643 ret = ast_return_new(ctx, exp);
2649 if (!parser_next(parser))
2650 parseerror(parser, "parse error");
2652 if (!retval && expected->expression.next->vtype != TYPE_VOID)
2654 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2656 ret = ast_return_new(ctx, (ast_expression*)retval);
2658 *out = (ast_expression*)ret;
2662 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2665 unsigned int levels = 0;
2666 lex_ctx_t ctx = parser_ctx(parser);
2667 const char **loops = (is_continue ? parser->continues : parser->breaks);
2669 (void)block; /* not touching */
2670 if (!parser_next(parser)) {
2671 parseerror(parser, "expected semicolon or loop label");
2675 if (!vec_size(loops)) {
2677 parseerror(parser, "`continue` can only be used inside loops");
2679 parseerror(parser, "`break` can only be used inside loops or switches");
2682 if (parser->tok == TOKEN_IDENT) {
2683 if (!OPTS_FLAG(LOOP_LABELS))
2684 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2685 i = vec_size(loops);
2687 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2690 parseerror(parser, "no such loop to %s: `%s`",
2691 (is_continue ? "continue" : "break out of"),
2692 parser_tokval(parser));
2697 if (!parser_next(parser)) {
2698 parseerror(parser, "expected semicolon");
2703 if (parser->tok != ';') {
2704 parseerror(parser, "expected semicolon");
2708 if (!parser_next(parser))
2709 parseerror(parser, "parse error");
2711 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2715 /* returns true when it was a variable qualifier, false otherwise!
2716 * on error, cvq is set to CV_WRONG
2718 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2720 bool had_const = false;
2721 bool had_var = false;
2722 bool had_noref = false;
2723 bool had_attrib = false;
2724 bool had_static = false;
2729 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2731 /* parse an attribute */
2732 if (!parser_next(parser)) {
2733 parseerror(parser, "expected attribute after `[[`");
2737 if (!strcmp(parser_tokval(parser), "noreturn")) {
2738 flags |= AST_FLAG_NORETURN;
2739 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2740 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2745 else if (!strcmp(parser_tokval(parser), "noref")) {
2747 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2748 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2753 else if (!strcmp(parser_tokval(parser), "inline")) {
2754 flags |= AST_FLAG_INLINE;
2755 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2756 parseerror(parser, "`inline` attribute has no parameters, expected `]]`");
2761 else if (!strcmp(parser_tokval(parser), "eraseable")) {
2762 flags |= AST_FLAG_ERASEABLE;
2763 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2764 parseerror(parser, "`eraseable` attribute has no parameters, expected `]]`");
2769 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
2770 flags |= AST_FLAG_ALIAS;
2773 if (!parser_next(parser)) {
2774 parseerror(parser, "parse error in attribute");
2778 if (parser->tok == '(') {
2779 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2780 parseerror(parser, "`alias` attribute missing parameter");
2784 *message = util_strdup(parser_tokval(parser));
2786 if (!parser_next(parser)) {
2787 parseerror(parser, "parse error in attribute");
2791 if (parser->tok != ')') {
2792 parseerror(parser, "`alias` attribute expected `)` after parameter");
2796 if (!parser_next(parser)) {
2797 parseerror(parser, "parse error in attribute");
2802 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2803 parseerror(parser, "`alias` attribute expected `]]`");
2807 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2808 flags |= AST_FLAG_DEPRECATED;
2811 if (!parser_next(parser)) {
2812 parseerror(parser, "parse error in attribute");
2816 if (parser->tok == '(') {
2817 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2818 parseerror(parser, "`deprecated` attribute missing parameter");
2822 *message = util_strdup(parser_tokval(parser));
2824 if (!parser_next(parser)) {
2825 parseerror(parser, "parse error in attribute");
2829 if(parser->tok != ')') {
2830 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2834 if (!parser_next(parser)) {
2835 parseerror(parser, "parse error in attribute");
2840 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2841 parseerror(parser, "`deprecated` attribute expected `]]`");
2844 if (*message) mem_d(*message);
2852 /* Skip tokens until we hit a ]] */
2853 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2854 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2855 if (!parser_next(parser)) {
2856 parseerror(parser, "error inside attribute");
2863 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2865 else if (!strcmp(parser_tokval(parser), "const"))
2867 else if (!strcmp(parser_tokval(parser), "var"))
2869 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2871 else if (!strcmp(parser_tokval(parser), "noref"))
2873 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2878 if (!parser_next(parser))
2888 *is_static = had_static;
2892 parseerror(parser, "parse error after variable qualifier");
2897 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2898 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2903 /* skip the 'while' and get the body */
2904 if (!parser_next(parser)) {
2905 if (OPTS_FLAG(LOOP_LABELS))
2906 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2908 parseerror(parser, "expected 'switch' operand in parenthesis");
2912 if (parser->tok == ':') {
2913 if (!OPTS_FLAG(LOOP_LABELS))
2914 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2915 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2916 parseerror(parser, "expected loop label");
2919 label = util_strdup(parser_tokval(parser));
2920 if (!parser_next(parser)) {
2922 parseerror(parser, "expected 'switch' operand in parenthesis");
2927 if (parser->tok != '(') {
2928 parseerror(parser, "expected 'switch' operand in parenthesis");
2932 vec_push(parser->breaks, label);
2934 rv = parse_switch_go(parser, block, out);
2937 if (vec_last(parser->breaks) != label) {
2938 parseerror(parser, "internal error: label stack corrupted");
2944 vec_pop(parser->breaks);
2949 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
2951 ast_expression *operand;
2954 ast_switch *switchnode;
2955 ast_switch_case swcase;
2958 bool noref, is_static;
2959 uint32_t qflags = 0;
2961 lex_ctx_t ctx = parser_ctx(parser);
2963 (void)block; /* not touching */
2966 /* parse into the expression */
2967 if (!parser_next(parser)) {
2968 parseerror(parser, "expected switch operand");
2971 /* parse the operand */
2972 operand = parse_expression_leave(parser, false, false, false);
2976 switchnode = ast_switch_new(ctx, operand);
2979 if (parser->tok != ')') {
2980 ast_delete(switchnode);
2981 parseerror(parser, "expected closing paren after 'switch' operand");
2985 /* parse over the opening paren */
2986 if (!parser_next(parser) || parser->tok != '{') {
2987 ast_delete(switchnode);
2988 parseerror(parser, "expected list of cases");
2992 if (!parser_next(parser)) {
2993 ast_delete(switchnode);
2994 parseerror(parser, "expected 'case' or 'default'");
2998 /* new block; allow some variables to be declared here */
2999 parser_enterblock(parser);
3002 if (parser->tok == TOKEN_IDENT)
3003 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3004 if (typevar || parser->tok == TOKEN_TYPENAME) {
3005 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3006 ast_delete(switchnode);
3011 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3013 if (cvq == CV_WRONG) {
3014 ast_delete(switchnode);
3017 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3018 ast_delete(switchnode);
3027 while (parser->tok != '}') {
3028 ast_block *caseblock;
3030 if (!strcmp(parser_tokval(parser), "case")) {
3031 if (!parser_next(parser)) {
3032 ast_delete(switchnode);
3033 parseerror(parser, "expected expression for case");
3036 swcase.value = parse_expression_leave(parser, false, false, false);
3037 if (!swcase.value) {
3038 ast_delete(switchnode);
3039 parseerror(parser, "expected expression for case");
3042 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3043 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3044 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3050 else if (!strcmp(parser_tokval(parser), "default")) {
3051 swcase.value = NULL;
3052 if (!parser_next(parser)) {
3053 ast_delete(switchnode);
3054 parseerror(parser, "expected colon");
3059 ast_delete(switchnode);
3060 parseerror(parser, "expected 'case' or 'default'");
3064 /* Now the colon and body */
3065 if (parser->tok != ':') {
3066 if (swcase.value) ast_unref(swcase.value);
3067 ast_delete(switchnode);
3068 parseerror(parser, "expected colon");
3072 if (!parser_next(parser)) {
3073 if (swcase.value) ast_unref(swcase.value);
3074 ast_delete(switchnode);
3075 parseerror(parser, "expected statements or case");
3078 caseblock = ast_block_new(parser_ctx(parser));
3080 if (swcase.value) ast_unref(swcase.value);
3081 ast_delete(switchnode);
3084 swcase.code = (ast_expression*)caseblock;
3085 vec_push(switchnode->cases, swcase);
3087 ast_expression *expr;
3088 if (parser->tok == '}')
3090 if (parser->tok == TOKEN_KEYWORD) {
3091 if (!strcmp(parser_tokval(parser), "case") ||
3092 !strcmp(parser_tokval(parser), "default"))
3097 if (!parse_statement(parser, caseblock, &expr, true)) {
3098 ast_delete(switchnode);
3103 if (!ast_block_add_expr(caseblock, expr)) {
3104 ast_delete(switchnode);
3110 parser_leaveblock(parser);
3113 if (parser->tok != '}') {
3114 ast_delete(switchnode);
3115 parseerror(parser, "expected closing paren of case list");
3118 if (!parser_next(parser)) {
3119 ast_delete(switchnode);
3120 parseerror(parser, "parse error after switch");
3123 *out = (ast_expression*)switchnode;
3127 /* parse computed goto sides */
3128 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3129 ast_expression *on_true;
3130 ast_expression *on_false;
3131 ast_expression *cond;
3136 if (ast_istype(*side, ast_ternary)) {
3137 ast_ternary *tern = (ast_ternary*)*side;
3138 on_true = parse_goto_computed(parser, &tern->on_true);
3139 on_false = parse_goto_computed(parser, &tern->on_false);
3141 if (!on_true || !on_false) {
3142 parseerror(parser, "expected label or expression in ternary");
3143 if (on_true) ast_unref(on_true);
3144 if (on_false) ast_unref(on_false);
3152 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3153 } else if (ast_istype(*side, ast_label)) {
3154 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3155 ast_goto_set_label(gt, ((ast_label*)*side));
3157 return (ast_expression*)gt;
3162 static bool parse_goto(parser_t *parser, ast_expression **out)
3164 ast_goto *gt = NULL;
3165 ast_expression *lbl;
3167 if (!parser_next(parser))
3170 if (parser->tok != TOKEN_IDENT) {
3171 ast_expression *expression;
3173 /* could be an expression i.e computed goto :-) */
3174 if (parser->tok != '(') {
3175 parseerror(parser, "expected label name after `goto`");
3179 /* failed to parse expression for goto */
3180 if (!(expression = parse_expression(parser, false, true)) ||
3181 !(*out = parse_goto_computed(parser, &expression))) {
3182 parseerror(parser, "invalid goto expression");
3184 ast_unref(expression);
3191 /* not computed goto */
3192 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3193 lbl = parser_find_label(parser, gt->name);
3195 if (!ast_istype(lbl, ast_label)) {
3196 parseerror(parser, "internal error: label is not an ast_label");
3200 ast_goto_set_label(gt, (ast_label*)lbl);
3203 vec_push(parser->gotos, gt);
3205 if (!parser_next(parser) || parser->tok != ';') {
3206 parseerror(parser, "semicolon expected after goto label");
3209 if (!parser_next(parser)) {
3210 parseerror(parser, "parse error after goto");
3214 *out = (ast_expression*)gt;
3218 static bool parse_skipwhite(parser_t *parser)
3221 if (!parser_next(parser))
3223 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3224 return parser->tok < TOKEN_ERROR;
3227 static bool parse_eol(parser_t *parser)
3229 if (!parse_skipwhite(parser))
3231 return parser->tok == TOKEN_EOL;
3234 static bool parse_pragma_do(parser_t *parser)
3236 if (!parser_next(parser) ||
3237 parser->tok != TOKEN_IDENT ||
3238 strcmp(parser_tokval(parser), "pragma"))
3240 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3243 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3244 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3248 if (!strcmp(parser_tokval(parser), "noref")) {
3249 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3250 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3253 parser->noref = !!parser_token(parser)->constval.i;
3254 if (!parse_eol(parser)) {
3255 parseerror(parser, "parse error after `noref` pragma");
3261 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3268 static bool parse_pragma(parser_t *parser)
3271 parser->lex->flags.preprocessing = true;
3272 parser->lex->flags.mergelines = true;
3273 rv = parse_pragma_do(parser);
3274 if (parser->tok != TOKEN_EOL) {
3275 parseerror(parser, "junk after pragma");
3278 parser->lex->flags.preprocessing = false;
3279 parser->lex->flags.mergelines = false;
3280 if (!parser_next(parser)) {
3281 parseerror(parser, "parse error after pragma");
3287 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3289 bool noref, is_static;
3291 uint32_t qflags = 0;
3292 ast_value *typevar = NULL;
3293 char *vstring = NULL;
3297 if (parser->tok == TOKEN_IDENT)
3298 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3300 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3302 /* local variable */
3304 parseerror(parser, "cannot declare a variable from here");
3307 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3308 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3311 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3315 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3317 if (cvq == CV_WRONG)
3319 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3321 else if (parser->tok == TOKEN_KEYWORD)
3323 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3328 if (!parser_next(parser)) {
3329 parseerror(parser, "parse error after __builtin_debug_printtype");
3333 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3335 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3336 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3337 if (!parser_next(parser)) {
3338 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3344 if (!parse_statement(parser, block, out, allow_cases))
3347 con_out("__builtin_debug_printtype: got no output node\n");
3350 ast_type_to_string(*out, ty, sizeof(ty));
3351 con_out("__builtin_debug_printtype: `%s`\n", ty);
3356 else if (!strcmp(parser_tokval(parser), "return"))
3358 return parse_return(parser, block, out);
3360 else if (!strcmp(parser_tokval(parser), "if"))
3362 return parse_if(parser, block, out);
3364 else if (!strcmp(parser_tokval(parser), "while"))
3366 return parse_while(parser, block, out);
3368 else if (!strcmp(parser_tokval(parser), "do"))
3370 return parse_dowhile(parser, block, out);
3372 else if (!strcmp(parser_tokval(parser), "for"))
3374 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3375 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3378 return parse_for(parser, block, out);
3380 else if (!strcmp(parser_tokval(parser), "break"))
3382 return parse_break_continue(parser, block, out, false);
3384 else if (!strcmp(parser_tokval(parser), "continue"))
3386 return parse_break_continue(parser, block, out, true);
3388 else if (!strcmp(parser_tokval(parser), "switch"))
3390 return parse_switch(parser, block, out);
3392 else if (!strcmp(parser_tokval(parser), "case") ||
3393 !strcmp(parser_tokval(parser), "default"))
3396 parseerror(parser, "unexpected 'case' label");
3401 else if (!strcmp(parser_tokval(parser), "goto"))
3403 return parse_goto(parser, out);
3405 else if (!strcmp(parser_tokval(parser), "typedef"))
3407 if (!parser_next(parser)) {
3408 parseerror(parser, "expected type definition after 'typedef'");
3411 return parse_typedef(parser);
3413 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3416 else if (parser->tok == '{')
3419 inner = parse_block(parser);
3422 *out = (ast_expression*)inner;
3425 else if (parser->tok == ':')
3429 if (!parser_next(parser)) {
3430 parseerror(parser, "expected label name");
3433 if (parser->tok != TOKEN_IDENT) {
3434 parseerror(parser, "label must be an identifier");
3437 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3439 if (!label->undefined) {
3440 parseerror(parser, "label `%s` already defined", label->name);
3443 label->undefined = false;
3446 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3447 vec_push(parser->labels, label);
3449 *out = (ast_expression*)label;
3450 if (!parser_next(parser)) {
3451 parseerror(parser, "parse error after label");
3454 for (i = 0; i < vec_size(parser->gotos); ++i) {
3455 if (!strcmp(parser->gotos[i]->name, label->name)) {
3456 ast_goto_set_label(parser->gotos[i], label);
3457 vec_remove(parser->gotos, i, 1);
3463 else if (parser->tok == ';')
3465 if (!parser_next(parser)) {
3466 parseerror(parser, "parse error after empty statement");
3473 lex_ctx_t ctx = parser_ctx(parser);
3474 ast_expression *exp = parse_expression(parser, false, false);
3478 if (!ast_side_effects(exp)) {
3479 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3486 static bool parse_enum(parser_t *parser)
3489 bool reverse = false;
3491 ast_value **values = NULL;
3492 ast_value *var = NULL;
3495 ast_expression *old;
3497 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3498 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3502 /* enumeration attributes (can add more later) */
3503 if (parser->tok == ':') {
3504 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3505 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3510 if (!strcmp(parser_tokval(parser), "flag")) {
3514 else if (!strcmp(parser_tokval(parser), "reverse")) {
3518 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3522 if (!parser_next(parser) || parser->tok != '{') {
3523 parseerror(parser, "expected `{` after enum attribute ");
3529 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3530 if (parser->tok == '}') {
3531 /* allow an empty enum */
3534 parseerror(parser, "expected identifier or `}`");
3538 old = parser_find_field(parser, parser_tokval(parser));
3540 old = parser_find_global(parser, parser_tokval(parser));
3542 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3543 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3547 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3548 vec_push(values, var);
3549 var->cvq = CV_CONST;
3550 var->hasvalue = true;
3552 /* for flagged enumerations increment in POTs of TWO */
3553 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3554 parser_addglobal(parser, var->name, (ast_expression*)var);
3556 if (!parser_next(parser)) {
3557 parseerror(parser, "expected `=`, `}` or comma after identifier");
3561 if (parser->tok == ',')
3563 if (parser->tok == '}')
3565 if (parser->tok != '=') {
3566 parseerror(parser, "expected `=`, `}` or comma after identifier");
3570 if (!parser_next(parser)) {
3571 parseerror(parser, "expected expression after `=`");
3575 /* We got a value! */
3576 old = parse_expression_leave(parser, true, false, false);
3577 asvalue = (ast_value*)old;
3578 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3579 compile_error(ast_ctx(var), "constant value or expression expected");
3582 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3584 if (parser->tok == '}')
3586 if (parser->tok != ',') {
3587 parseerror(parser, "expected `}` or comma after expression");
3592 /* patch them all (for reversed attribute) */
3595 for (i = 0; i < vec_size(values); i++)
3596 values[i]->constval.vfloat = vec_size(values) - i - 1;
3599 if (parser->tok != '}') {
3600 parseerror(parser, "internal error: breaking without `}`");
3604 if (!parser_next(parser) || parser->tok != ';') {
3605 parseerror(parser, "expected semicolon after enumeration");
3609 if (!parser_next(parser)) {
3610 parseerror(parser, "parse error after enumeration");
3622 static bool parse_block_into(parser_t *parser, ast_block *block)
3626 parser_enterblock(parser);
3628 if (!parser_next(parser)) { /* skip the '{' */
3629 parseerror(parser, "expected function body");
3633 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3635 ast_expression *expr = NULL;
3636 if (parser->tok == '}')
3639 if (!parse_statement(parser, block, &expr, false)) {
3640 /* parseerror(parser, "parse error"); */
3646 if (!ast_block_add_expr(block, expr)) {
3653 if (parser->tok != '}') {
3656 (void)parser_next(parser);
3660 if (!parser_leaveblock(parser))
3662 return retval && !!block;
3665 static ast_block* parse_block(parser_t *parser)
3668 block = ast_block_new(parser_ctx(parser));
3671 if (!parse_block_into(parser, block)) {
3672 ast_block_delete(block);
3678 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3680 if (parser->tok == '{') {
3681 *out = (ast_expression*)parse_block(parser);
3684 return parse_statement(parser, NULL, out, false);
3687 static bool create_vector_members(ast_value *var, ast_member **me)
3690 size_t len = strlen(var->name);
3692 for (i = 0; i < 3; ++i) {
3693 char *name = (char*)mem_a(len+3);
3694 memcpy(name, var->name, len);
3696 name[len+1] = 'x'+i;
3698 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3707 do { ast_member_delete(me[--i]); } while(i);
3711 static bool parse_function_body(parser_t *parser, ast_value *var)
3713 ast_block *block = NULL;
3718 ast_expression *framenum = NULL;
3719 ast_expression *nextthink = NULL;
3720 /* None of the following have to be deleted */
3721 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3722 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3723 bool has_frame_think;
3727 has_frame_think = false;
3728 old = parser->function;
3730 if (var->expression.flags & AST_FLAG_ALIAS) {
3731 parseerror(parser, "function aliases cannot have bodies");
3735 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3736 parseerror(parser, "gotos/labels leaking");
3740 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
3741 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3742 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
3748 if (parser->tok == '[') {
3749 /* got a frame definition: [ framenum, nextthink ]
3750 * this translates to:
3751 * self.frame = framenum;
3752 * self.nextthink = time + 0.1;
3753 * self.think = nextthink;
3757 fld_think = parser_find_field(parser, "think");
3758 fld_nextthink = parser_find_field(parser, "nextthink");
3759 fld_frame = parser_find_field(parser, "frame");
3760 if (!fld_think || !fld_nextthink || !fld_frame) {
3761 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3762 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3765 gbl_time = parser_find_global(parser, "time");
3766 gbl_self = parser_find_global(parser, "self");
3767 if (!gbl_time || !gbl_self) {
3768 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3769 parseerror(parser, "please declare the following globals: `time`, `self`");
3773 if (!parser_next(parser))
3776 framenum = parse_expression_leave(parser, true, false, false);
3778 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3781 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3782 ast_unref(framenum);
3783 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3787 if (parser->tok != ',') {
3788 ast_unref(framenum);
3789 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3790 parseerror(parser, "Got a %i\n", parser->tok);
3794 if (!parser_next(parser)) {
3795 ast_unref(framenum);
3799 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3801 /* qc allows the use of not-yet-declared functions here
3802 * - this automatically creates a prototype */
3803 ast_value *thinkfunc;
3804 ast_expression *functype = fld_think->next;
3806 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
3807 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
3808 ast_unref(framenum);
3809 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3812 ast_type_adopt(thinkfunc, functype);
3814 if (!parser_next(parser)) {
3815 ast_unref(framenum);
3816 ast_delete(thinkfunc);
3820 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3822 nextthink = (ast_expression*)thinkfunc;
3825 nextthink = parse_expression_leave(parser, true, false, false);
3827 ast_unref(framenum);
3828 parseerror(parser, "expected a think-function in [frame,think] notation");
3833 if (!ast_istype(nextthink, ast_value)) {
3834 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3838 if (retval && parser->tok != ']') {
3839 parseerror(parser, "expected closing `]` for [frame,think] notation");
3843 if (retval && !parser_next(parser)) {
3847 if (retval && parser->tok != '{') {
3848 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3853 ast_unref(nextthink);
3854 ast_unref(framenum);
3858 has_frame_think = true;
3861 block = ast_block_new(parser_ctx(parser));
3863 parseerror(parser, "failed to allocate block");
3864 if (has_frame_think) {
3865 ast_unref(nextthink);
3866 ast_unref(framenum);
3871 if (has_frame_think) {
3873 ast_expression *self_frame;
3874 ast_expression *self_nextthink;
3875 ast_expression *self_think;
3876 ast_expression *time_plus_1;
3877 ast_store *store_frame;
3878 ast_store *store_nextthink;
3879 ast_store *store_think;
3881 ctx = parser_ctx(parser);
3882 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3883 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3884 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3886 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3887 gbl_time, (ast_expression*)fold_constgen_float(parser->fold, 0.1f));
3889 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3890 if (self_frame) ast_delete(self_frame);
3891 if (self_nextthink) ast_delete(self_nextthink);
3892 if (self_think) ast_delete(self_think);
3893 if (time_plus_1) ast_delete(time_plus_1);
3899 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3900 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3901 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3904 ast_delete(self_frame);
3907 if (!store_nextthink) {
3908 ast_delete(self_nextthink);
3912 ast_delete(self_think);
3916 if (store_frame) ast_delete(store_frame);
3917 if (store_nextthink) ast_delete(store_nextthink);
3918 if (store_think) ast_delete(store_think);
3921 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3922 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3923 !ast_block_add_expr(block, (ast_expression*)store_think))
3930 parseerror(parser, "failed to generate code for [frame,think]");
3931 ast_unref(nextthink);
3932 ast_unref(framenum);
3938 if (var->hasvalue) {
3939 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
3940 ast_block_delete(block);
3944 func = ast_function_new(ast_ctx(var), var->name, var);
3946 parseerror(parser, "failed to allocate function for `%s`", var->name);
3947 ast_block_delete(block);
3950 vec_push(parser->functions, func);
3952 parser_enterblock(parser);
3954 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3956 ast_value *param = var->expression.params[parami];
3959 if (param->expression.vtype != TYPE_VECTOR &&
3960 (param->expression.vtype != TYPE_FIELD ||
3961 param->expression.next->vtype != TYPE_VECTOR))
3966 if (!create_vector_members(param, me)) {
3967 ast_block_delete(block);
3971 for (e = 0; e < 3; ++e) {
3972 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3973 ast_block_collect(block, (ast_expression*)me[e]);
3977 if (var->argcounter) {
3978 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
3979 parser_addlocal(parser, argc->name, (ast_expression*)argc);
3983 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
3985 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
3986 varargs->expression.flags |= AST_FLAG_IS_VARARG;
3987 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
3988 varargs->expression.count = 0;
3989 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
3990 if (!parser_create_array_setter_proto(parser, varargs, name)) {
3991 ast_delete(varargs);
3992 ast_block_delete(block);
3995 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
3996 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
3997 ast_delete(varargs);
3998 ast_block_delete(block);
4001 func->varargs = varargs;
4002 func->fixedparams = (ast_value*)fold_constgen_float(parser->fold, vec_size(var->expression.params));
4005 parser->function = func;
4006 if (!parse_block_into(parser, block)) {
4007 ast_block_delete(block);
4011 vec_push(func->blocks, block);
4014 parser->function = old;
4015 if (!parser_leaveblock(parser))
4017 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4018 parseerror(parser, "internal error: local scopes left");
4022 if (parser->tok == ';')
4023 return parser_next(parser);
4024 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4025 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4029 (void)!parser_leaveblock(parser);
4030 vec_pop(parser->functions);
4031 ast_function_delete(func);
4032 var->constval.vfunc = NULL;
4035 parser->function = old;
4039 static ast_expression *array_accessor_split(
4044 ast_expression *left,
4045 ast_expression *right
4051 lex_ctx_t ctx = ast_ctx(array);
4053 if (!left || !right) {
4054 if (left) ast_delete(left);
4055 if (right) ast_delete(right);
4059 cmp = ast_binary_new(ctx, INSTR_LT,
4060 (ast_expression*)index,
4061 (ast_expression*)fold_constgen_float(parser->fold, middle));
4065 parseerror(parser, "internal error: failed to create comparison for array setter");
4069 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4071 ast_delete(cmp); /* will delete left and right */
4072 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4076 return (ast_expression*)ifthen;
4079 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4081 lex_ctx_t ctx = ast_ctx(array);
4083 if (from+1 == afterend) {
4084 /* set this value */
4087 ast_array_index *subscript;
4089 int assignop = type_store_instr[value->expression.vtype];
4091 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4092 assignop = INSTR_STORE_V;
4094 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4098 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4100 ast_delete(subscript);
4104 block = ast_block_new(ctx);
4110 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4115 ret = ast_return_new(ctx, NULL);
4121 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4126 return (ast_expression*)block;
4128 ast_expression *left, *right;
4129 size_t diff = afterend - from;
4130 size_t middle = from + diff/2;
4131 left = array_setter_node(parser, array, index, value, from, middle);
4132 right = array_setter_node(parser, array, index, value, middle, afterend);
4133 return array_accessor_split(parser, array, index, middle, left, right);
4137 static ast_expression *array_field_setter_node(
4146 lex_ctx_t ctx = ast_ctx(array);
4148 if (from+1 == afterend) {
4149 /* set this value */
4152 ast_entfield *entfield;
4153 ast_array_index *subscript;
4155 int assignop = type_storep_instr[value->expression.vtype];
4157 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4158 assignop = INSTR_STOREP_V;
4160 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4164 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4165 subscript->expression.vtype = TYPE_FIELD;
4167 entfield = ast_entfield_new_force(ctx,
4168 (ast_expression*)entity,
4169 (ast_expression*)subscript,
4170 (ast_expression*)subscript);
4172 ast_delete(subscript);
4176 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4178 ast_delete(entfield);
4182 block = ast_block_new(ctx);
4188 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4193 ret = ast_return_new(ctx, NULL);
4199 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4204 return (ast_expression*)block;
4206 ast_expression *left, *right;
4207 size_t diff = afterend - from;
4208 size_t middle = from + diff/2;
4209 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4210 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4211 return array_accessor_split(parser, array, index, middle, left, right);
4215 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4217 lex_ctx_t ctx = ast_ctx(array);
4219 if (from+1 == afterend) {
4221 ast_array_index *subscript;
4223 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4227 ret = ast_return_new(ctx, (ast_expression*)subscript);
4229 ast_delete(subscript);
4233 return (ast_expression*)ret;
4235 ast_expression *left, *right;
4236 size_t diff = afterend - from;
4237 size_t middle = from + diff/2;
4238 left = array_getter_node(parser, array, index, from, middle);
4239 right = array_getter_node(parser, array, index, middle, afterend);
4240 return array_accessor_split(parser, array, index, middle, left, right);
4244 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4246 ast_function *func = NULL;
4247 ast_value *fval = NULL;
4248 ast_block *body = NULL;
4250 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4252 parseerror(parser, "failed to create accessor function value");
4256 func = ast_function_new(ast_ctx(array), funcname, fval);
4259 parseerror(parser, "failed to create accessor function node");
4263 body = ast_block_new(ast_ctx(array));
4265 parseerror(parser, "failed to create block for array accessor");
4271 vec_push(func->blocks, body);
4274 vec_push(parser->accessors, fval);
4279 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4281 ast_value *index = NULL;
4282 ast_value *value = NULL;
4286 if (!ast_istype(array->expression.next, ast_value)) {
4287 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4291 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4293 func = fval->constval.vfunc;
4294 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4296 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4297 value = ast_value_copy((ast_value*)array->expression.next);
4299 if (!index || !value) {
4300 parseerror(parser, "failed to create locals for array accessor");
4303 (void)!ast_value_set_name(value, "value"); /* not important */
4304 vec_push(fval->expression.params, index);
4305 vec_push(fval->expression.params, value);
4307 array->setter = fval;
4310 if (index) ast_delete(index);
4311 if (value) ast_delete(value);
4317 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4319 ast_expression *root = NULL;
4320 root = array_setter_node(parser, array,
4321 array->setter->expression.params[0],
4322 array->setter->expression.params[1],
4323 0, array->expression.count);
4325 parseerror(parser, "failed to build accessor search tree");
4328 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4335 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4337 if (!parser_create_array_setter_proto(parser, array, funcname))
4339 return parser_create_array_setter_impl(parser, array);
4342 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4344 ast_expression *root = NULL;
4345 ast_value *entity = NULL;
4346 ast_value *index = NULL;
4347 ast_value *value = NULL;
4351 if (!ast_istype(array->expression.next, ast_value)) {
4352 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4356 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4358 func = fval->constval.vfunc;
4359 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4361 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4362 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4363 value = ast_value_copy((ast_value*)array->expression.next);
4364 if (!entity || !index || !value) {
4365 parseerror(parser, "failed to create locals for array accessor");
4368 (void)!ast_value_set_name(value, "value"); /* not important */
4369 vec_push(fval->expression.params, entity);
4370 vec_push(fval->expression.params, index);
4371 vec_push(fval->expression.params, value);
4373 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4375 parseerror(parser, "failed to build accessor search tree");
4379 array->setter = fval;
4380 return ast_block_add_expr(func->blocks[0], root);
4382 if (entity) ast_delete(entity);
4383 if (index) ast_delete(index);
4384 if (value) ast_delete(value);
4385 if (root) ast_delete(root);
4391 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4393 ast_value *index = NULL;
4397 /* NOTE: checking array->expression.next rather than elemtype since
4398 * for fields elemtype is a temporary fieldtype.
4400 if (!ast_istype(array->expression.next, ast_value)) {
4401 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4405 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4407 func = fval->constval.vfunc;
4408 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4410 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4413 parseerror(parser, "failed to create locals for array accessor");
4416 vec_push(fval->expression.params, index);
4418 array->getter = fval;
4421 if (index) ast_delete(index);
4427 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4429 ast_expression *root = NULL;
4431 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4433 parseerror(parser, "failed to build accessor search tree");
4436 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4443 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4445 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4447 return parser_create_array_getter_impl(parser, array);
4450 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4451 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4459 bool variadic = false;
4460 ast_value *varparam = NULL;
4461 char *argcounter = NULL;
4463 ctx = parser_ctx(parser);
4465 /* for the sake of less code we parse-in in this function */
4466 if (!parser_next(parser)) {
4468 parseerror(parser, "expected parameter list");
4474 /* parse variables until we hit a closing paren */
4475 while (parser->tok != ')') {
4477 /* there must be commas between them */
4478 if (parser->tok != ',') {
4479 parseerror(parser, "expected comma or end of parameter list");
4482 if (!parser_next(parser)) {
4483 parseerror(parser, "expected parameter");
4489 if (parser->tok == TOKEN_DOTS) {
4490 /* '...' indicates a varargs function */
4492 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4493 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4496 if (parser->tok == TOKEN_IDENT) {
4497 argcounter = util_strdup(parser_tokval(parser));
4498 if (!parser_next(parser) || parser->tok != ')') {
4499 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4506 /* for anything else just parse a typename */
4507 param = parse_typename(parser, NULL, NULL);
4510 vec_push(params, param);
4511 if (param->expression.vtype >= TYPE_VARIANT) {
4512 char tname[1024]; /* typename is reserved in C++ */
4513 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4514 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4517 /* type-restricted varargs */
4518 if (parser->tok == TOKEN_DOTS) {
4520 varparam = vec_last(params);
4522 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4523 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4526 if (parser->tok == TOKEN_IDENT) {
4527 argcounter = util_strdup(parser_tokval(parser));
4528 if (!parser_next(parser) || parser->tok != ')') {
4529 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4537 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4541 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4542 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4545 if (!parser_next(parser)) {
4546 parseerror(parser, "parse error after typename");
4550 /* now turn 'var' into a function type */
4551 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4552 fval->expression.next = (ast_expression*)var;
4554 fval->expression.flags |= AST_FLAG_VARIADIC;
4557 var->expression.params = params;
4558 var->expression.varparam = (ast_expression*)varparam;
4559 var->argcounter = argcounter;
4568 ast_delete(varparam);
4570 for (i = 0; i < vec_size(params); ++i)
4571 ast_delete(params[i]);
4576 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4578 ast_expression *cexp;
4579 ast_value *cval, *tmp;
4582 ctx = parser_ctx(parser);
4584 if (!parser_next(parser)) {
4586 parseerror(parser, "expected array-size");
4590 if (parser->tok != ']') {
4591 cexp = parse_expression_leave(parser, true, false, false);
4593 if (!cexp || !ast_istype(cexp, ast_value)) {
4597 parseerror(parser, "expected array-size as constant positive integer");
4600 cval = (ast_value*)cexp;
4607 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4608 tmp->expression.next = (ast_expression*)var;
4612 if (cval->expression.vtype == TYPE_INTEGER)
4613 tmp->expression.count = cval->constval.vint;
4614 else if (cval->expression.vtype == TYPE_FLOAT)
4615 tmp->expression.count = cval->constval.vfloat;
4619 parseerror(parser, "array-size must be a positive integer constant");
4625 var->expression.count = -1;
4626 var->expression.flags |= AST_FLAG_ARRAY_INIT;
4629 if (parser->tok != ']') {
4631 parseerror(parser, "expected ']' after array-size");
4634 if (!parser_next(parser)) {
4636 parseerror(parser, "error after parsing array size");
4642 /* Parse a complete typename.
4643 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4644 * but when parsing variables separated by comma
4645 * 'storebase' should point to where the base-type should be kept.
4646 * The base type makes up every bit of type information which comes *before* the
4649 * The following will be parsed in its entirety:
4651 * The 'basetype' in this case is 'void()'
4652 * and if there's a comma after it, say:
4654 * then the type-information 'void()' can be stored in 'storebase'
4656 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4658 ast_value *var, *tmp;
4661 const char *name = NULL;
4662 bool isfield = false;
4663 bool wasarray = false;
4664 size_t morefields = 0;
4666 ctx = parser_ctx(parser);
4668 /* types may start with a dot */
4669 if (parser->tok == '.') {
4671 /* if we parsed a dot we need a typename now */
4672 if (!parser_next(parser)) {
4673 parseerror(parser, "expected typename for field definition");
4677 /* Further dots are handled seperately because they won't be part of the
4680 while (parser->tok == '.') {
4682 if (!parser_next(parser)) {
4683 parseerror(parser, "expected typename for field definition");
4688 if (parser->tok == TOKEN_IDENT)
4689 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4690 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4691 parseerror(parser, "expected typename");
4695 /* generate the basic type value */
4696 if (cached_typedef) {
4697 var = ast_value_copy(cached_typedef);
4698 ast_value_set_name(var, "<type(from_def)>");
4700 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4702 for (; morefields; --morefields) {
4703 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4704 tmp->expression.next = (ast_expression*)var;
4708 /* do not yet turn into a field - remember:
4709 * .void() foo; is a field too
4710 * .void()() foo; is a function
4714 if (!parser_next(parser)) {
4716 parseerror(parser, "parse error after typename");
4720 /* an opening paren now starts the parameter-list of a function
4721 * this is where original-QC has parameter lists.
4722 * We allow a single parameter list here.
4723 * Much like fteqcc we don't allow `float()() x`
4725 if (parser->tok == '(') {
4726 var = parse_parameter_list(parser, var);
4731 /* store the base if requested */
4733 *storebase = ast_value_copy(var);
4735 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4736 tmp->expression.next = (ast_expression*)*storebase;
4741 /* there may be a name now */
4742 if (parser->tok == TOKEN_IDENT) {
4743 name = util_strdup(parser_tokval(parser));
4745 if (!parser_next(parser)) {
4748 parseerror(parser, "error after variable or field declaration");
4753 /* now this may be an array */
4754 if (parser->tok == '[') {
4756 var = parse_arraysize(parser, var);
4758 if (name) mem_d(name);
4763 /* This is the point where we can turn it into a field */
4765 /* turn it into a field if desired */
4766 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4767 tmp->expression.next = (ast_expression*)var;
4771 /* now there may be function parens again */
4772 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4773 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4774 if (parser->tok == '(' && wasarray)
4775 parseerror(parser, "arrays as part of a return type is not supported");
4776 while (parser->tok == '(') {
4777 var = parse_parameter_list(parser, var);
4779 if (name) mem_d(name);
4784 /* finally name it */
4786 if (!ast_value_set_name(var, name)) {
4789 parseerror(parser, "internal error: failed to set name");
4792 /* free the name, ast_value_set_name duplicates */
4799 static bool parse_typedef(parser_t *parser)
4801 ast_value *typevar, *oldtype;
4802 ast_expression *old;
4804 typevar = parse_typename(parser, NULL, NULL);
4809 if ( (old = parser_find_var(parser, typevar->name)) ) {
4810 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4811 " -> `%s` has been declared here: %s:%i",
4812 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4813 ast_delete(typevar);
4817 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4818 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4819 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4820 ast_delete(typevar);
4824 vec_push(parser->_typedefs, typevar);
4825 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4827 if (parser->tok != ';') {
4828 parseerror(parser, "expected semicolon after typedef");
4831 if (!parser_next(parser)) {
4832 parseerror(parser, "parse error after typedef");
4839 static const char *cvq_to_str(int cvq) {
4841 case CV_NONE: return "none";
4842 case CV_VAR: return "`var`";
4843 case CV_CONST: return "`const`";
4844 default: return "<INVALID>";
4848 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4851 if (proto->cvq != var->cvq) {
4852 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4853 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4854 parser->tok == '='))
4856 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4857 "`%s` declared with different qualifiers: %s\n"
4858 " -> previous declaration here: %s:%i uses %s",
4859 var->name, cvq_to_str(var->cvq),
4860 ast_ctx(proto).file, ast_ctx(proto).line,
4861 cvq_to_str(proto->cvq));
4864 av = (var ->expression.flags & AST_FLAG_NORETURN);
4865 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4867 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4868 "`%s` declared with different attributes%s\n"
4869 " -> previous declaration here: %s:%i",
4870 var->name, (av ? ": noreturn" : ""),
4871 ast_ctx(proto).file, ast_ctx(proto).line,
4872 (ao ? ": noreturn" : ""));
4877 static bool create_array_accessors(parser_t *parser, ast_value *var)
4880 util_snprintf(name, sizeof(name), "%s##SET", var->name);
4881 if (!parser_create_array_setter(parser, var, name))
4883 util_snprintf(name, sizeof(name), "%s##GET", var->name);
4884 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4889 static bool parse_array(parser_t *parser, ast_value *array)
4892 if (array->initlist) {
4893 parseerror(parser, "array already initialized elsewhere");
4896 if (!parser_next(parser)) {
4897 parseerror(parser, "parse error in array initializer");
4901 while (parser->tok != '}') {
4902 ast_value *v = (ast_value*)parse_expression_leave(parser, true, false, false);
4905 if (!ast_istype(v, ast_value) || !v->hasvalue || v->cvq != CV_CONST) {
4907 parseerror(parser, "initializing element must be a compile time constant");
4910 vec_push(array->initlist, v->constval);
4911 if (v->expression.vtype == TYPE_STRING) {
4912 array->initlist[i].vstring = util_strdupe(array->initlist[i].vstring);
4916 if (parser->tok == '}')
4918 if (parser->tok != ',' || !parser_next(parser)) {
4919 parseerror(parser, "expected comma or '}' in element list");
4923 if (!parser_next(parser) || parser->tok != ';') {
4924 parseerror(parser, "expected semicolon after initializer, got %s");
4928 if (!parser_next(parser)) {
4929 parseerror(parser, "parse error after initializer");
4934 if (array->expression.flags & AST_FLAG_ARRAY_INIT) {
4935 if (array->expression.count != (size_t)-1) {
4936 parseerror(parser, "array `%s' has already been initialized with %u elements",
4937 array->name, (unsigned)array->expression.count);
4939 array->expression.count = vec_size(array->initlist);
4940 if (!create_array_accessors(parser, array))
4946 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)
4950 ast_expression *old;
4954 ast_value *basetype = NULL;
4956 bool isparam = false;
4957 bool isvector = false;
4958 bool cleanvar = true;
4959 bool wasarray = false;
4961 ast_member *me[3] = { NULL, NULL, NULL };
4963 if (!localblock && is_static)
4964 parseerror(parser, "`static` qualifier is not supported in global scope");
4966 /* get the first complete variable */
4967 var = parse_typename(parser, &basetype, cached_typedef);
4970 ast_delete(basetype);
4978 /* Part 0: finish the type */
4979 if (parser->tok == '(') {
4980 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4981 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4982 var = parse_parameter_list(parser, var);
4988 /* we only allow 1-dimensional arrays */
4989 if (parser->tok == '[') {
4991 var = parse_arraysize(parser, var);
4997 if (parser->tok == '(' && wasarray) {
4998 parseerror(parser, "arrays as part of a return type is not supported");
4999 /* we'll still parse the type completely for now */
5001 /* for functions returning functions */
5002 while (parser->tok == '(') {
5003 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5004 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5005 var = parse_parameter_list(parser, var);
5012 var->cvq = qualifier;
5013 var->expression.flags |= qflags;
5016 * store the vstring back to var for alias and
5017 * deprecation messages.
5019 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5020 var->expression.flags & AST_FLAG_ALIAS)
5021 var->desc = vstring;
5024 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5025 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5026 * is then filled with the previous definition and the parameter-names replaced.
5028 if (!strcmp(var->name, "nil")) {
5029 if (OPTS_FLAG(UNTYPED_NIL)) {
5030 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5031 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5033 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5036 /* Deal with end_sys_ vars */
5038 if (!strcmp(var->name, "end_sys_globals")) {
5040 parser->crc_globals = vec_size(parser->globals);
5043 else if (!strcmp(var->name, "end_sys_fields")) {
5045 parser->crc_fields = vec_size(parser->fields);
5048 if (was_end && var->expression.vtype == TYPE_FIELD) {
5049 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5050 "global '%s' hint should not be a field",
5051 parser_tokval(parser)))
5058 if (!nofields && var->expression.vtype == TYPE_FIELD)
5060 /* deal with field declarations */
5061 old = parser_find_field(parser, var->name);
5063 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5064 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5073 parseerror(parser, "field `%s` already declared here: %s:%i",
5074 var->name, ast_ctx(old).file, ast_ctx(old).line);
5079 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5080 (old = parser_find_global(parser, var->name)))
5082 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5083 parseerror(parser, "field `%s` already declared here: %s:%i",
5084 var->name, ast_ctx(old).file, ast_ctx(old).line);
5091 /* deal with other globals */
5092 old = parser_find_global(parser, var->name);
5093 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5095 /* This is a function which had a prototype */
5096 if (!ast_istype(old, ast_value)) {
5097 parseerror(parser, "internal error: prototype is not an ast_value");
5101 proto = (ast_value*)old;
5102 proto->desc = var->desc;
5103 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5104 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5106 ast_ctx(proto).file, ast_ctx(proto).line);
5110 /* we need the new parameter-names */
5111 for (i = 0; i < vec_size(proto->expression.params); ++i)
5112 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5113 if (!parser_check_qualifiers(parser, var, proto)) {
5120 proto->expression.flags |= var->expression.flags;
5128 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5129 "global `%s` already declared here: %s:%i",
5130 var->name, ast_ctx(old).file, ast_ctx(old).line))
5135 proto = (ast_value*)old;
5136 if (!ast_istype(old, ast_value)) {
5137 parseerror(parser, "internal error: not an ast_value");
5142 if (!parser_check_qualifiers(parser, var, proto)) {
5147 proto->expression.flags |= var->expression.flags;
5151 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5152 (old = parser_find_field(parser, var->name)))
5154 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5155 parseerror(parser, "global `%s` already declared here: %s:%i",
5156 var->name, ast_ctx(old).file, ast_ctx(old).line);
5163 else /* it's not a global */
5165 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5166 if (old && !isparam) {
5167 parseerror(parser, "local `%s` already declared here: %s:%i",
5168 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5172 old = parser_find_local(parser, var->name, 0, &isparam);
5173 if (old && isparam) {
5174 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5175 "local `%s` is shadowing a parameter", var->name))
5177 parseerror(parser, "local `%s` already declared here: %s:%i",
5178 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5182 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5184 if (ast_istype(old, ast_value))
5185 var = (ast_value*)old;
5194 /* in a noref section we simply bump the usecount */
5195 if (noref || parser->noref)
5199 * Create the global/local, and deal with vector types.
5202 if (var->expression.vtype == TYPE_VECTOR)
5204 else if (var->expression.vtype == TYPE_FIELD &&
5205 var->expression.next->vtype == TYPE_VECTOR)
5209 if (!create_vector_members(var, me)) {
5216 /* deal with global variables, fields, functions */
5217 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5218 var->isfield = true;
5219 vec_push(parser->fields, (ast_expression*)var);
5220 util_htset(parser->htfields, var->name, var);
5222 for (i = 0; i < 3; ++i) {
5223 vec_push(parser->fields, (ast_expression*)me[i]);
5224 util_htset(parser->htfields, me[i]->name, me[i]);
5229 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5230 parser_addglobal(parser, var->name, (ast_expression*)var);
5232 for (i = 0; i < 3; ++i) {
5233 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5237 ast_expression *find = parser_find_global(parser, var->desc);
5240 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5244 if (var->expression.vtype != find->vtype) {
5248 ast_type_to_string(find, ty1, sizeof(ty1));
5249 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5251 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5258 * add alias to aliases table and to corrector
5259 * so corrections can apply for aliases as well.
5261 util_htset(parser->aliases, var->name, find);
5264 * add to corrector so corrections can work
5265 * even for aliases too.
5268 vec_last(parser->correct_variables),
5269 &vec_last(parser->correct_variables_score),
5273 /* generate aliases for vector components */
5277 util_asprintf(&buffer[0], "%s_x", var->desc);
5278 util_asprintf(&buffer[1], "%s_y", var->desc);
5279 util_asprintf(&buffer[2], "%s_z", var->desc);
5281 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5282 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5283 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5290 * add to corrector so corrections can work
5291 * even for aliases too.
5294 vec_last(parser->correct_variables),
5295 &vec_last(parser->correct_variables_score),
5299 vec_last(parser->correct_variables),
5300 &vec_last(parser->correct_variables_score),
5304 vec_last(parser->correct_variables),
5305 &vec_last(parser->correct_variables_score),
5313 /* a static adds itself to be generated like any other global
5314 * but is added to the local namespace instead
5316 char *defname = NULL;
5317 size_t prefix_len, ln;
5319 ln = strlen(parser->function->name);
5320 vec_append(defname, ln, parser->function->name);
5322 vec_append(defname, 2, "::");
5323 /* remember the length up to here */
5324 prefix_len = vec_size(defname);
5326 /* Add it to the local scope */
5327 util_htset(vec_last(parser->variables), var->name, (void*)var);
5331 vec_last(parser->correct_variables),
5332 &vec_last(parser->correct_variables_score),
5336 /* now rename the global */
5337 ln = strlen(var->name);
5338 vec_append(defname, ln, var->name);
5339 ast_value_set_name(var, defname);
5341 /* push it to the to-be-generated globals */
5342 vec_push(parser->globals, (ast_expression*)var);
5344 /* same game for the vector members */
5346 for (i = 0; i < 3; ++i) {
5347 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5351 vec_last(parser->correct_variables),
5352 &vec_last(parser->correct_variables_score),
5356 vec_shrinkto(defname, prefix_len);
5357 ln = strlen(me[i]->name);
5358 vec_append(defname, ln, me[i]->name);
5359 ast_member_set_name(me[i], defname);
5361 vec_push(parser->globals, (ast_expression*)me[i]);
5366 vec_push(localblock->locals, var);
5367 parser_addlocal(parser, var->name, (ast_expression*)var);
5369 for (i = 0; i < 3; ++i) {
5370 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5371 ast_block_collect(localblock, (ast_expression*)me[i]);
5377 me[0] = me[1] = me[2] = NULL;
5382 if (var->expression.vtype == TYPE_ARRAY) {
5383 if (var->expression.count != (size_t)-1) {
5384 if (!create_array_accessors(parser, var))
5388 else if (!localblock && !nofields &&
5389 var->expression.vtype == TYPE_FIELD &&
5390 var->expression.next->vtype == TYPE_ARRAY)
5393 ast_expression *telem;
5395 ast_value *array = (ast_value*)var->expression.next;
5397 if (!ast_istype(var->expression.next, ast_value)) {
5398 parseerror(parser, "internal error: field element type must be an ast_value");
5402 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5403 if (!parser_create_array_field_setter(parser, array, name))
5406 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5407 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5408 tfield->expression.next = telem;
5409 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5410 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5418 if (parser->tok == ';') {
5419 ast_delete(basetype);
5420 if (!parser_next(parser)) {
5421 parseerror(parser, "error after variable declaration");
5427 if (parser->tok == ',')
5431 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5434 parseerror(parser, "missing comma or semicolon while parsing variables");
5438 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5439 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5440 "initializing expression turns variable `%s` into a constant in this standard",
5447 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5448 if (parser->tok != '=') {
5449 if (!strcmp(parser_tokval(parser), "break")) {
5450 if (!parser_next(parser)) {
5451 parseerror(parser, "error parsing break definition");
5454 (void)!parsewarning(parser, WARN_BREAKDEF, "break definition ignored (suggest removing it)");
5456 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5461 if (!parser_next(parser)) {
5462 parseerror(parser, "error parsing initializer");
5466 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5467 parseerror(parser, "expected '=' before function body in this standard");
5470 if (parser->tok == '#') {
5471 ast_function *func = NULL;
5472 ast_value *number = NULL;
5478 parseerror(parser, "cannot declare builtins within functions");
5481 if (var->expression.vtype != TYPE_FUNCTION) {
5482 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5485 if (!parser_next(parser)) {
5486 parseerror(parser, "expected builtin number");
5490 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5491 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5493 parseerror(parser, "builtin number expected");
5496 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5499 parseerror(parser, "builtin number must be a compile time constant");
5502 if (number->expression.vtype == TYPE_INTEGER)
5503 builtin_num = number->constval.vint;
5504 else if (number->expression.vtype == TYPE_FLOAT)
5505 builtin_num = number->constval.vfloat;
5508 parseerror(parser, "builtin number must be an integer constant");
5513 fractional = modff(builtin_num, &integral);
5514 if (builtin_num < 0 || fractional != 0) {
5515 parseerror(parser, "builtin number must be an integer greater than zero");
5519 /* we only want the integral part anyways */
5520 builtin_num = integral;
5521 } else if (parser->tok == TOKEN_INTCONST) {
5522 builtin_num = parser_token(parser)->constval.i;
5524 parseerror(parser, "builtin number must be a compile time constant");
5528 if (var->hasvalue) {
5529 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5530 "builtin `%s` has already been defined\n"
5531 " -> previous declaration here: %s:%i",
5532 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5536 func = ast_function_new(ast_ctx(var), var->name, var);
5538 parseerror(parser, "failed to allocate function for `%s`", var->name);
5541 vec_push(parser->functions, func);
5543 func->builtin = -builtin_num-1;
5546 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5547 ? (parser->tok != ',' && parser->tok != ';')
5548 : (!parser_next(parser)))
5550 parseerror(parser, "expected comma or semicolon");
5552 ast_function_delete(func);
5553 var->constval.vfunc = NULL;
5557 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
5560 /* Note that fteqcc and most others don't even *have*
5561 * local arrays, so this is not a high priority.
5563 parseerror(parser, "TODO: initializers for local arrays");
5567 var->hasvalue = true;
5568 if (!parse_array(parser, var))
5571 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
5574 parseerror(parser, "cannot declare functions within functions");
5579 ast_ctx(proto) = parser_ctx(parser);
5581 if (!parse_function_body(parser, var))
5583 ast_delete(basetype);
5584 for (i = 0; i < vec_size(parser->gotos); ++i)
5585 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5586 vec_free(parser->gotos);
5587 vec_free(parser->labels);
5590 ast_expression *cexp;
5593 cexp = parse_expression_leave(parser, true, false, false);
5598 cval = (ast_value*)cexp;
5599 if (cval != parser->nil &&
5600 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5603 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5607 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5608 qualifier != CV_VAR)
5610 var->cvq = CV_CONST;
5612 if (cval == parser->nil)
5613 var->expression.flags |= AST_FLAG_INITIALIZED;
5616 var->hasvalue = true;
5617 if (cval->expression.vtype == TYPE_STRING)
5618 var->constval.vstring = parser_strdup(cval->constval.vstring);
5619 else if (cval->expression.vtype == TYPE_FIELD)
5620 var->constval.vfield = cval;
5622 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5628 shunt sy = { NULL, NULL, NULL, NULL };
5631 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5632 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5633 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5634 if (!parser_sy_apply_operator(parser, &sy))
5637 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5638 parseerror(parser, "internal error: leaked operands");
5639 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5650 if (parser->tok == ',') {
5651 if (!parser_next(parser)) {
5652 parseerror(parser, "expected another variable");
5656 if (parser->tok != TOKEN_IDENT) {
5657 parseerror(parser, "expected another variable");
5660 var = ast_value_copy(basetype);
5662 ast_value_set_name(var, parser_tokval(parser));
5663 if (!parser_next(parser)) {
5664 parseerror(parser, "error parsing variable declaration");
5670 if (parser->tok != ';') {
5671 parseerror(parser, "missing semicolon after variables");
5675 if (!parser_next(parser)) {
5676 parseerror(parser, "parse error after variable declaration");
5680 ast_delete(basetype);
5684 if (cleanvar && var)
5686 ast_delete(basetype);
5690 ast_delete(basetype);
5691 if (cleanvar && var)
5693 if (me[0]) ast_member_delete(me[0]);
5694 if (me[1]) ast_member_delete(me[1]);
5695 if (me[2]) ast_member_delete(me[2]);
5699 static bool parser_global_statement(parser_t *parser)
5703 bool is_static = false;
5704 uint32_t qflags = 0;
5705 ast_value *istype = NULL;
5706 char *vstring = NULL;
5708 if (parser->tok == TOKEN_IDENT)
5709 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5711 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5713 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5715 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5717 if (cvq == CV_WRONG)
5719 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5721 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5723 return parse_enum(parser);
5725 else if (parser->tok == TOKEN_KEYWORD)
5727 if (!strcmp(parser_tokval(parser), "typedef")) {
5728 if (!parser_next(parser)) {
5729 parseerror(parser, "expected type definition after 'typedef'");
5732 return parse_typedef(parser);
5734 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5737 else if (parser->tok == '#')
5739 return parse_pragma(parser);
5741 else if (parser->tok == '$')
5743 if (!parser_next(parser)) {
5744 parseerror(parser, "parse error");
5750 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
5756 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5758 return util_crc16(old, str, strlen(str));
5761 static void progdefs_crc_file(const char *str)
5763 /* write to progdefs.h here */
5767 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5769 old = progdefs_crc_sum(old, str);
5770 progdefs_crc_file(str);
5774 static void generate_checksum(parser_t *parser, ir_builder *ir)
5776 uint16_t crc = 0xFFFF;
5780 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5781 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5783 progdefs_crc_file("\tint\tpad;\n");
5784 progdefs_crc_file("\tint\tofs_return[3];\n");
5785 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5786 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5787 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5788 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5789 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5790 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5791 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5792 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5794 for (i = 0; i < parser->crc_globals; ++i) {
5795 if (!ast_istype(parser->globals[i], ast_value))
5797 value = (ast_value*)(parser->globals[i]);
5798 switch (value->expression.vtype) {
5799 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5800 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5801 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5802 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5804 crc = progdefs_crc_both(crc, "\tint\t");
5807 crc = progdefs_crc_both(crc, value->name);
5808 crc = progdefs_crc_both(crc, ";\n");
5810 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5811 for (i = 0; i < parser->crc_fields; ++i) {
5812 if (!ast_istype(parser->fields[i], ast_value))
5814 value = (ast_value*)(parser->fields[i]);
5815 switch (value->expression.next->vtype) {
5816 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5817 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5818 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5819 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5821 crc = progdefs_crc_both(crc, "\tint\t");
5824 crc = progdefs_crc_both(crc, value->name);
5825 crc = progdefs_crc_both(crc, ";\n");
5827 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5828 ir->code->crc = crc;
5831 parser_t *parser_create()
5834 lex_ctx_t empty_ctx;
5837 parser = (parser_t*)mem_a(sizeof(parser_t));
5841 memset(parser, 0, sizeof(*parser));
5843 for (i = 0; i < operator_count; ++i) {
5844 if (operators[i].id == opid1('=')) {
5845 parser->assign_op = operators+i;
5849 if (!parser->assign_op) {
5850 printf("internal error: initializing parser: failed to find assign operator\n");
5855 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5856 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5857 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5858 vec_push(parser->_blocktypedefs, 0);
5860 parser->aliases = util_htnew(PARSER_HT_SIZE);
5863 vec_push(parser->correct_variables, correct_trie_new());
5864 vec_push(parser->correct_variables_score, NULL);
5866 empty_ctx.file = "<internal>";
5868 empty_ctx.column = 0;
5869 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
5870 parser->nil->cvq = CV_CONST;
5871 if (OPTS_FLAG(UNTYPED_NIL))
5872 util_htset(parser->htglobals, "nil", (void*)parser->nil);
5874 parser->max_param_count = 1;
5876 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
5877 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
5878 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
5880 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
5881 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
5882 parser->reserved_version->cvq = CV_CONST;
5883 parser->reserved_version->hasvalue = true;
5884 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
5885 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
5887 parser->reserved_version = NULL;
5890 parser->fold = fold_init (parser);
5891 parser->intrin = intrin_init(parser);
5895 static bool parser_compile(parser_t *parser)
5897 /* initial lexer/parser state */
5898 parser->lex->flags.noops = true;
5900 if (parser_next(parser))
5902 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
5904 if (!parser_global_statement(parser)) {
5905 if (parser->tok == TOKEN_EOF)
5906 parseerror(parser, "unexpected end of file");
5907 else if (compile_errors)
5908 parseerror(parser, "there have been errors, bailing out");
5909 lex_close(parser->lex);
5915 parseerror(parser, "parse error");
5916 lex_close(parser->lex);
5921 lex_close(parser->lex);
5924 return !compile_errors;
5927 bool parser_compile_file(parser_t *parser, const char *filename)
5929 parser->lex = lex_open(filename);
5931 con_err("failed to open file \"%s\"\n", filename);
5934 return parser_compile(parser);
5937 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
5939 parser->lex = lex_open_string(str, len, name);
5941 con_err("failed to create lexer for string \"%s\"\n", name);
5944 return parser_compile(parser);
5947 static void parser_remove_ast(parser_t *parser)
5950 if (parser->ast_cleaned)
5952 parser->ast_cleaned = true;
5953 for (i = 0; i < vec_size(parser->accessors); ++i) {
5954 ast_delete(parser->accessors[i]->constval.vfunc);
5955 parser->accessors[i]->constval.vfunc = NULL;
5956 ast_delete(parser->accessors[i]);
5958 for (i = 0; i < vec_size(parser->functions); ++i) {
5959 ast_delete(parser->functions[i]);
5961 for (i = 0; i < vec_size(parser->fields); ++i) {
5962 ast_delete(parser->fields[i]);
5964 for (i = 0; i < vec_size(parser->globals); ++i) {
5965 ast_delete(parser->globals[i]);
5967 vec_free(parser->accessors);
5968 vec_free(parser->functions);
5969 vec_free(parser->globals);
5970 vec_free(parser->fields);
5972 for (i = 0; i < vec_size(parser->variables); ++i)
5973 util_htdel(parser->variables[i]);
5974 vec_free(parser->variables);
5975 vec_free(parser->_blocklocals);
5976 vec_free(parser->_locals);
5979 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
5980 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
5982 vec_free(parser->correct_variables);
5983 vec_free(parser->correct_variables_score);
5985 for (i = 0; i < vec_size(parser->_typedefs); ++i)
5986 ast_delete(parser->_typedefs[i]);
5987 vec_free(parser->_typedefs);
5988 for (i = 0; i < vec_size(parser->typedefs); ++i)
5989 util_htdel(parser->typedefs[i]);
5990 vec_free(parser->typedefs);
5991 vec_free(parser->_blocktypedefs);
5993 vec_free(parser->_block_ctx);
5995 vec_free(parser->labels);
5996 vec_free(parser->gotos);
5997 vec_free(parser->breaks);
5998 vec_free(parser->continues);
6000 ast_value_delete(parser->nil);
6002 ast_value_delete(parser->const_vec[0]);
6003 ast_value_delete(parser->const_vec[1]);
6004 ast_value_delete(parser->const_vec[2]);
6006 if (parser->reserved_version)
6007 ast_value_delete(parser->reserved_version);
6009 util_htdel(parser->aliases);
6010 fold_cleanup(parser->fold);
6011 intrin_cleanup(parser->intrin);
6014 void parser_cleanup(parser_t *parser)
6016 parser_remove_ast(parser);
6020 bool parser_finish(parser_t *parser, const char *output)
6026 if (compile_errors) {
6027 con_out("*** there were compile errors\n");
6031 ir = ir_builder_new("gmqcc_out");
6033 con_out("failed to allocate builder\n");
6037 for (i = 0; i < vec_size(parser->fields); ++i) {
6040 if (!ast_istype(parser->fields[i], ast_value))
6042 field = (ast_value*)parser->fields[i];
6043 hasvalue = field->hasvalue;
6044 field->hasvalue = false;
6045 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6046 con_out("failed to generate field %s\n", field->name);
6047 ir_builder_delete(ir);
6052 ast_expression *subtype;
6053 field->hasvalue = true;
6054 subtype = field->expression.next;
6055 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6056 if (subtype->vtype == TYPE_FIELD)
6057 ifld->fieldtype = subtype->next->vtype;
6058 else if (subtype->vtype == TYPE_FUNCTION)
6059 ifld->outtype = subtype->next->vtype;
6060 (void)!ir_value_set_field(field->ir_v, ifld);
6063 for (i = 0; i < vec_size(parser->globals); ++i) {
6065 if (!ast_istype(parser->globals[i], ast_value))
6067 asvalue = (ast_value*)(parser->globals[i]);
6068 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6069 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6070 "unused global: `%s`", asvalue->name);
6072 if (!ast_global_codegen(asvalue, ir, false)) {
6073 con_out("failed to generate global %s\n", asvalue->name);
6074 ir_builder_delete(ir);
6078 /* Build function vararg accessor ast tree now before generating
6079 * immediates, because the accessors may add new immediates
6081 for (i = 0; i < vec_size(parser->functions); ++i) {
6082 ast_function *f = parser->functions[i];
6084 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6085 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6086 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6087 con_out("failed to generate vararg setter for %s\n", f->name);
6088 ir_builder_delete(ir);
6091 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6092 con_out("failed to generate vararg getter for %s\n", f->name);
6093 ir_builder_delete(ir);
6097 ast_delete(f->varargs);
6102 /* Now we can generate immediates */
6103 if (!fold_generate(parser->fold, ir))
6106 for (i = 0; i < vec_size(parser->globals); ++i) {
6108 if (!ast_istype(parser->globals[i], ast_value))
6110 asvalue = (ast_value*)(parser->globals[i]);
6111 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6113 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6114 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6115 "uninitialized constant: `%s`",
6117 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6118 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6119 "uninitialized global: `%s`",
6122 if (!ast_generate_accessors(asvalue, ir)) {
6123 ir_builder_delete(ir);
6127 for (i = 0; i < vec_size(parser->fields); ++i) {
6129 asvalue = (ast_value*)(parser->fields[i]->next);
6131 if (!ast_istype((ast_expression*)asvalue, ast_value))
6133 if (asvalue->expression.vtype != TYPE_ARRAY)
6135 if (!ast_generate_accessors(asvalue, ir)) {
6136 ir_builder_delete(ir);
6140 if (parser->reserved_version &&
6141 !ast_global_codegen(parser->reserved_version, ir, false))
6143 con_out("failed to generate reserved::version");
6144 ir_builder_delete(ir);
6147 for (i = 0; i < vec_size(parser->functions); ++i) {
6148 ast_function *f = parser->functions[i];
6149 if (!ast_function_codegen(f, ir)) {
6150 con_out("failed to generate function %s\n", f->name);
6151 ir_builder_delete(ir);
6156 generate_checksum(parser, ir);
6158 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6159 ir_builder_dump(ir, con_out);
6160 for (i = 0; i < vec_size(parser->functions); ++i) {
6161 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6162 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6163 ir_builder_delete(ir);
6167 parser_remove_ast(parser);
6169 if (compile_Werrors) {
6170 con_out("*** there were warnings treated as errors\n");
6171 compile_show_werrors();
6176 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6177 ir_builder_dump(ir, con_out);
6179 if (!ir_builder_generate(ir, output)) {
6180 con_out("*** failed to generate output file\n");
6181 ir_builder_delete(ir);
6185 ir_builder_delete(ir);