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 check_write_to(lex_ctx_t ctx, ast_expression *expr)
287 if (ast_istype(expr, ast_value)) {
288 ast_value *val = (ast_value*)expr;
289 if (val->cvq == CV_CONST) {
290 if (val->name[0] == '#')
291 compile_error(ctx, "invalid assignment to a literal constant");
293 compile_error(ctx, "assignment to constant `%s`", val->name);
300 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
304 ast_expression *out = NULL;
305 ast_expression *exprs[3];
306 ast_block *blocks[3];
307 ast_binstore *asbinstore;
308 size_t i, assignop, addop, subop;
309 qcint_t generated_op = 0;
314 if (!vec_size(sy->ops)) {
315 parseerror(parser, "internal error: missing operator");
319 if (vec_last(sy->ops).isparen) {
320 parseerror(parser, "unmatched parenthesis");
324 op = &operators[vec_last(sy->ops).etype - 1];
325 ctx = vec_last(sy->ops).ctx;
327 if (vec_size(sy->out) < op->operands) {
328 if (op->flags & OP_PREFIX)
329 compile_error(ctx, "expected expression after unary operator `%s`", op->op, (int)op->id);
330 else /* this should have errored previously already */
331 compile_error(ctx, "expected expression after operator `%s`", op->op, (int)op->id);
335 vec_shrinkby(sy->ops, 1);
337 /* op(:?) has no input and no output */
341 vec_shrinkby(sy->out, op->operands);
342 for (i = 0; i < op->operands; ++i) {
343 exprs[i] = sy->out[vec_size(sy->out)+i].out;
344 blocks[i] = sy->out[vec_size(sy->out)+i].block;
346 if (exprs[i]->vtype == TYPE_NOEXPR &&
347 !(i != 0 && op->id == opid2('?',':')) &&
348 !(i == 1 && op->id == opid1('.')))
350 if (ast_istype(exprs[i], ast_label))
351 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
353 compile_error(ast_ctx(exprs[i]), "not an expression");
354 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
358 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
359 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
363 #define NotSameType(T) \
364 (exprs[0]->vtype != exprs[1]->vtype || \
365 exprs[0]->vtype != T)
369 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
373 if (exprs[0]->vtype == TYPE_VECTOR &&
374 exprs[1]->vtype == TYPE_NOEXPR)
376 if (exprs[1] == (ast_expression*)parser->const_vec[0])
377 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
378 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
379 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
380 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
381 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
383 compile_error(ctx, "access to invalid vector component");
387 else if (exprs[0]->vtype == TYPE_ENTITY) {
388 if (exprs[1]->vtype != TYPE_FIELD) {
389 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
392 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
394 else if (exprs[0]->vtype == TYPE_VECTOR) {
395 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
399 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
405 if (exprs[0]->vtype != TYPE_ARRAY &&
406 !(exprs[0]->vtype == TYPE_FIELD &&
407 exprs[0]->next->vtype == TYPE_ARRAY))
409 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
410 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
413 if (exprs[1]->vtype != TYPE_FLOAT) {
414 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
415 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
418 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
419 if (rotate_entfield_array_index_nodes(&out))
422 /* This is not broken in fteqcc anymore */
423 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
424 /* this error doesn't need to make us bail out */
425 (void)!parsewarning(parser, WARN_EXTENSIONS,
426 "accessing array-field members of an entity without parenthesis\n"
427 " -> this is an extension from -std=gmqcc");
434 if (vec_size(sy->paren) && vec_last(sy->paren) == PAREN_FUNC) {
435 vec_push(sy->out, syexp(ctx, exprs[0]));
436 vec_push(sy->out, syexp(ctx, exprs[1]));
437 vec_last(sy->argc)++;
441 if (!ast_block_add_expr(blocks[0], exprs[1]))
444 blocks[0] = ast_block_new(ctx);
445 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
446 !ast_block_add_expr(blocks[0], exprs[1]))
451 ast_block_set_type(blocks[0], exprs[1]);
453 vec_push(sy->out, syblock(ctx, blocks[0]));
460 if (!(out = fold_op(parser->fold, op, exprs))) {
461 switch (exprs[0]->vtype) {
463 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
464 (ast_expression*)parser->fold->imm_float[0],
468 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
469 (ast_expression*)parser->fold->imm_vector[0],
473 compile_error(ctx, "invalid types used in expression: cannot negate type %s",
474 type_name[exprs[0]->vtype]);
481 if (!(out = fold_op(parser->fold, op, exprs))) {
482 switch (exprs[0]->vtype) {
484 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
487 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
490 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
491 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
493 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
495 /* we don't constant-fold NOT for these types */
497 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
500 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
503 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
504 type_name[exprs[0]->vtype]);
511 if (exprs[0]->vtype != exprs[1]->vtype ||
512 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
514 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
515 type_name[exprs[0]->vtype],
516 type_name[exprs[1]->vtype]);
519 if (!(out = fold_op(parser->fold, op, exprs))) {
520 switch (exprs[0]->vtype) {
522 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
525 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
528 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
529 type_name[exprs[0]->vtype],
530 type_name[exprs[1]->vtype]);
536 if (exprs[0]->vtype != exprs[1]->vtype ||
537 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT))
539 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
540 type_name[exprs[1]->vtype],
541 type_name[exprs[0]->vtype]);
544 if (!(out = fold_op(parser->fold, op, exprs))) {
545 switch (exprs[0]->vtype) {
547 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
550 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
553 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
554 type_name[exprs[1]->vtype],
555 type_name[exprs[0]->vtype]);
561 if (exprs[0]->vtype != exprs[1]->vtype &&
562 !(exprs[0]->vtype == TYPE_VECTOR &&
563 exprs[1]->vtype == TYPE_FLOAT) &&
564 !(exprs[1]->vtype == TYPE_VECTOR &&
565 exprs[0]->vtype == TYPE_FLOAT)
568 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
569 type_name[exprs[1]->vtype],
570 type_name[exprs[0]->vtype]);
573 if (!(out = fold_op(parser->fold, op, exprs))) {
574 switch (exprs[0]->vtype) {
576 if (exprs[1]->vtype == TYPE_VECTOR)
577 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
579 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
582 if (exprs[1]->vtype == TYPE_FLOAT)
583 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
585 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
588 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
589 type_name[exprs[1]->vtype],
590 type_name[exprs[0]->vtype]);
597 if (exprs[1]->vtype != TYPE_FLOAT) {
598 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
599 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
600 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
603 if (!(out = fold_op(parser->fold, op, exprs))) {
604 if (exprs[0]->vtype == TYPE_FLOAT)
605 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
607 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
608 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
609 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
616 if (NotSameType(TYPE_FLOAT)) {
617 compile_error(ctx, "invalid types used in expression: cannot perform modulo operation between types %s and %s",
618 type_name[exprs[0]->vtype],
619 type_name[exprs[1]->vtype]);
621 } else if (!(out = fold_op(parser->fold, op, exprs))) {
622 /* generate a call to __builtin_mod */
623 ast_expression *mod = intrin_func(parser->intrin, "mod");
624 ast_call *call = NULL;
625 if (!mod) return false; /* can return null for missing floor */
627 call = ast_call_new(parser_ctx(parser), mod);
628 vec_push(call->params, exprs[0]);
629 vec_push(call->params, exprs[1]);
631 out = (ast_expression*)call;
636 compile_error(ctx, "%= is unimplemented");
642 if ( !(exprs[0]->vtype == TYPE_FLOAT && exprs[1]->vtype == TYPE_FLOAT) &&
643 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_FLOAT) &&
644 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_VECTOR))
646 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
647 type_name[exprs[0]->vtype],
648 type_name[exprs[1]->vtype]);
652 if (!(out = fold_op(parser->fold, op, exprs))) {
654 * IF the first expression is float, the following will be too
655 * since scalar ^ vector is not allowed.
657 if (exprs[0]->vtype == TYPE_FLOAT) {
658 out = (ast_expression*)ast_binary_new(ctx,
659 (op->id == opid1('^') ? VINSTR_BITXOR : op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
663 * The first is a vector: vector is allowed to bitop with vector and
664 * with scalar, branch here for the second operand.
666 if (exprs[1]->vtype == TYPE_VECTOR) {
668 * Bitop all the values of the vector components against the
669 * vectors components in question.
671 out = (ast_expression*)ast_binary_new(ctx,
672 (op->id == opid1('^') ? VINSTR_BITXOR_V : op->id == opid1('|') ? VINSTR_BITOR_V : VINSTR_BITAND_V),
675 out = (ast_expression*)ast_binary_new(ctx,
676 (op->id == opid1('^') ? VINSTR_BITXOR_VF : op->id == opid1('|') ? VINSTR_BITOR_VF : VINSTR_BITAND_VF),
685 case opid3('<','<','='):
686 case opid3('>','>','='):
687 if(!(out = fold_op(parser->fold, op, exprs))) {
688 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
694 generated_op += 1; /* INSTR_OR */
696 generated_op += INSTR_AND;
697 if (!(out = fold_op(parser->fold, op, exprs))) {
698 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
699 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
700 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
701 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
704 for (i = 0; i < 2; ++i) {
705 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->vtype == TYPE_VECTOR) {
706 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
708 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
710 exprs[i] = out; out = NULL;
711 if (OPTS_FLAG(PERL_LOGIC)) {
712 /* here we want to keep the right expressions' type */
716 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->vtype == TYPE_STRING) {
717 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
719 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
721 exprs[i] = out; out = NULL;
722 if (OPTS_FLAG(PERL_LOGIC)) {
723 /* here we want to keep the right expressions' type */
728 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
733 if (vec_last(sy->paren) != PAREN_TERNARY2) {
734 compile_error(ctx, "mismatched parenthesis/ternary");
738 if (!ast_compare_type(exprs[1], exprs[2])) {
739 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
740 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
741 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
744 if (!(out = fold_op(parser->fold, op, exprs)))
745 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
748 case opid2('*', '*'):
749 if (NotSameType(TYPE_FLOAT)) {
750 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
751 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
752 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
757 if (!(out = fold_op(parser->fold, op, exprs))) {
758 ast_call *gencall = ast_call_new(parser_ctx(parser), intrin_func(parser->intrin, "pow"));
759 vec_push(gencall->params, exprs[0]);
760 vec_push(gencall->params, exprs[1]);
761 out = (ast_expression*)gencall;
765 case opid2('>', '<'):
766 if (NotSameType(TYPE_VECTOR)) {
767 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
768 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
769 compile_error(ctx, "invalid types used in cross product: %s and %s",
774 if (!(out = fold_op(parser->fold, op, exprs))) {
775 compile_error(ctx, "cross product for non-constant vectors unimplemented");
781 case opid3('<','=','>'): /* -1, 0, or 1 */
782 if (NotSameType(TYPE_FLOAT)) {
783 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
784 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
785 compile_error(ctx, "invalid types used in comparision: %s and %s",
791 if (!(out = fold_op(parser->fold, op, exprs))) {
792 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
794 eq->refs = AST_REF_NONE;
797 out = (ast_expression*)ast_ternary_new(ctx,
798 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
800 (ast_expression*)parser->fold->imm_float[2],
803 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
805 (ast_expression*)parser->fold->imm_float[0],
808 (ast_expression*)parser->fold->imm_float[1]
818 generated_op += 1; /* INSTR_GT */
820 generated_op += 1; /* INSTR_LT */
821 case opid2('>', '='):
822 generated_op += 1; /* INSTR_GE */
823 case opid2('<', '='):
824 generated_op += INSTR_LE;
825 if (NotSameType(TYPE_FLOAT)) {
826 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
827 type_name[exprs[0]->vtype],
828 type_name[exprs[1]->vtype]);
831 if (!(out = fold_op(parser->fold, op, exprs)))
832 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
834 case opid2('!', '='):
835 if (exprs[0]->vtype != exprs[1]->vtype) {
836 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
837 type_name[exprs[0]->vtype],
838 type_name[exprs[1]->vtype]);
841 if (!(out = fold_op(parser->fold, op, exprs)))
842 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->vtype], exprs[0], exprs[1]);
844 case opid2('=', '='):
845 if (exprs[0]->vtype != exprs[1]->vtype) {
846 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
847 type_name[exprs[0]->vtype],
848 type_name[exprs[1]->vtype]);
851 if (!(out = fold_op(parser->fold, op, exprs)))
852 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->vtype], exprs[0], exprs[1]);
856 if (ast_istype(exprs[0], ast_entfield)) {
857 ast_expression *field = ((ast_entfield*)exprs[0])->field;
858 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
859 exprs[0]->vtype == TYPE_FIELD &&
860 exprs[0]->next->vtype == TYPE_VECTOR)
862 assignop = type_storep_instr[TYPE_VECTOR];
865 assignop = type_storep_instr[exprs[0]->vtype];
866 if (assignop == VINSTR_END || !ast_compare_type(field->next, exprs[1]))
868 ast_type_to_string(field->next, ty1, sizeof(ty1));
869 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
870 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
871 field->next->vtype == TYPE_FUNCTION &&
872 exprs[1]->vtype == TYPE_FUNCTION)
874 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
875 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
878 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
883 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
884 exprs[0]->vtype == TYPE_FIELD &&
885 exprs[0]->next->vtype == TYPE_VECTOR)
887 assignop = type_store_instr[TYPE_VECTOR];
890 assignop = type_store_instr[exprs[0]->vtype];
893 if (assignop == VINSTR_END) {
894 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
895 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
896 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
898 else if (!ast_compare_type(exprs[0], exprs[1]))
900 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
901 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
902 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
903 exprs[0]->vtype == TYPE_FUNCTION &&
904 exprs[1]->vtype == TYPE_FUNCTION)
906 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
907 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
910 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
913 (void)check_write_to(ctx, exprs[0]);
914 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
916 case opid3('+','+','P'):
917 case opid3('-','-','P'):
919 if (exprs[0]->vtype != TYPE_FLOAT) {
920 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
921 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
924 if (op->id == opid3('+','+','P'))
928 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
929 if (ast_istype(exprs[0], ast_entfield)) {
930 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
932 (ast_expression*)parser->fold->imm_float[1]);
934 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
936 (ast_expression*)parser->fold->imm_float[1]);
939 case opid3('S','+','+'):
940 case opid3('S','-','-'):
942 if (exprs[0]->vtype != TYPE_FLOAT) {
943 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
944 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
947 if (op->id == opid3('S','+','+')) {
954 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
955 if (ast_istype(exprs[0], ast_entfield)) {
956 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
958 (ast_expression*)parser->fold->imm_float[1]);
960 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
962 (ast_expression*)parser->fold->imm_float[1]);
966 out = (ast_expression*)ast_binary_new(ctx, subop,
968 (ast_expression*)parser->fold->imm_float[1]);
972 if (exprs[0]->vtype != exprs[1]->vtype ||
973 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
975 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
976 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
977 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
981 (void)check_write_to(ctx, exprs[0]);
982 if (ast_istype(exprs[0], ast_entfield))
983 assignop = type_storep_instr[exprs[0]->vtype];
985 assignop = type_store_instr[exprs[0]->vtype];
986 switch (exprs[0]->vtype) {
988 out = (ast_expression*)ast_binstore_new(ctx, assignop,
989 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
993 out = (ast_expression*)ast_binstore_new(ctx, assignop,
994 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
998 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
999 type_name[exprs[0]->vtype],
1000 type_name[exprs[1]->vtype]);
1004 case opid2('*','='):
1005 case opid2('/','='):
1006 if (exprs[1]->vtype != TYPE_FLOAT ||
1007 !(exprs[0]->vtype == TYPE_FLOAT ||
1008 exprs[0]->vtype == TYPE_VECTOR))
1010 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1011 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1012 compile_error(ctx, "invalid types used in expression: %s and %s",
1016 (void)check_write_to(ctx, exprs[0]);
1017 if (ast_istype(exprs[0], ast_entfield))
1018 assignop = type_storep_instr[exprs[0]->vtype];
1020 assignop = type_store_instr[exprs[0]->vtype];
1021 switch (exprs[0]->vtype) {
1023 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1024 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1025 exprs[0], exprs[1]);
1028 if (op->id == opid2('*','=')) {
1029 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1030 exprs[0], exprs[1]);
1032 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1033 (ast_expression*)parser->fold->imm_float[1],
1036 compile_error(ctx, "internal error: failed to generate division");
1039 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1044 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1045 type_name[exprs[0]->vtype],
1046 type_name[exprs[1]->vtype]);
1050 case opid2('&','='):
1051 case opid2('|','='):
1052 case opid2('^','='):
1053 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1054 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1055 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1056 compile_error(ctx, "invalid types used in expression: %s and %s",
1060 (void)check_write_to(ctx, exprs[0]);
1061 if (ast_istype(exprs[0], ast_entfield))
1062 assignop = type_storep_instr[exprs[0]->vtype];
1064 assignop = type_store_instr[exprs[0]->vtype];
1065 if (exprs[0]->vtype == TYPE_FLOAT)
1066 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1067 (op->id == opid2('^','=') ? VINSTR_BITXOR : op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1068 exprs[0], exprs[1]);
1070 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1071 (op->id == opid2('^','=') ? VINSTR_BITXOR_V : op->id == opid2('&','=') ? VINSTR_BITAND_V : VINSTR_BITOR_V),
1072 exprs[0], exprs[1]);
1074 case opid3('&','~','='):
1075 /* This is like: a &= ~(b);
1076 * But QC has no bitwise-not, so we implement it as
1079 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1080 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1081 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1082 compile_error(ctx, "invalid types used in expression: %s and %s",
1086 if (ast_istype(exprs[0], ast_entfield))
1087 assignop = type_storep_instr[exprs[0]->vtype];
1089 assignop = type_store_instr[exprs[0]->vtype];
1090 if (exprs[0]->vtype == TYPE_FLOAT)
1091 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1093 out = (ast_expression*)ast_binary_new(ctx, VINSTR_BITAND_V, exprs[0], exprs[1]);
1096 (void)check_write_to(ctx, exprs[0]);
1097 if (exprs[0]->vtype == TYPE_FLOAT)
1098 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1100 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_V, exprs[0], out);
1101 asbinstore->keep_dest = true;
1102 out = (ast_expression*)asbinstore;
1105 case opid2('~', 'P'):
1106 if (exprs[0]->vtype != TYPE_FLOAT && exprs[0]->vtype != TYPE_VECTOR) {
1107 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1108 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1111 if (!(out = fold_op(parser->fold, op, exprs))) {
1112 if (exprs[0]->vtype == TYPE_FLOAT) {
1113 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, (ast_expression*)parser->fold->imm_float[2], exprs[0]);
1115 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, (ast_expression*)parser->fold->imm_vector[1], exprs[0]);
1122 compile_error(ctx, "failed to apply operator %s", op->op);
1126 vec_push(sy->out, syexp(ctx, out));
1130 static bool parser_close_call(parser_t *parser, shunt *sy)
1132 /* was a function call */
1133 ast_expression *fun;
1134 ast_value *funval = NULL;
1138 size_t paramcount, i;
1141 fid = vec_last(sy->ops).off;
1142 vec_shrinkby(sy->ops, 1);
1144 /* out[fid] is the function
1145 * everything above is parameters...
1147 if (!vec_size(sy->argc)) {
1148 parseerror(parser, "internal error: no argument counter available");
1152 paramcount = vec_last(sy->argc);
1155 if (vec_size(sy->out) < fid) {
1156 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1157 (unsigned long)vec_size(sy->out),
1159 (unsigned long)paramcount);
1164 * TODO handle this at the intrinsic level with an ast_intrinsic
1167 if ((fun = sy->out[fid].out) == intrin_debug_typestring(parser->intrin)) {
1169 if (fid+2 != vec_size(sy->out) ||
1170 vec_last(sy->out).block)
1172 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1175 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1176 ast_unref(vec_last(sy->out).out);
1177 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1178 (ast_expression*)fold_constgen_string(parser->fold, ty, false));
1179 vec_shrinkby(sy->out, 1);
1184 * Now we need to determine if the function that is being called is
1185 * an intrinsic so we can evaluate if the arguments to it are constant
1186 * and than fruitfully fold them.
1188 #define fold_can_1(X) \
1189 (ast_istype(((ast_expression*)(X)), ast_value) && (X)->hasvalue && ((X)->cvq == CV_CONST) && \
1190 ((ast_expression*)(X))->vtype != TYPE_FUNCTION)
1192 if (fid + 1 < vec_size(sy->out))
1195 for (i = 0; i < paramcount; ++i) {
1196 if (!fold_can_1((ast_value*)sy->out[fid + 1 + i].out)) {
1203 * All is well which ends well, if we make it into here we can ignore the
1204 * intrinsic call and just evaluate it i.e constant fold it.
1206 if (fold && ast_istype(fun, ast_value) && ((ast_value*)fun)->intrinsic) {
1207 ast_expression **exprs = NULL;
1208 ast_expression *foldval = NULL;
1210 for (i = 0; i < paramcount; i++)
1211 vec_push(exprs, sy->out[fid+1 + i].out);
1213 if (!(foldval = intrin_fold(parser->intrin, (ast_value*)fun, exprs))) {
1219 * Blub: what sorts of unreffing and resizing of
1220 * sy->out should I be doing here?
1222 sy->out[fid] = syexp(foldval->node.context, foldval);
1223 vec_shrinkby(sy->out, 1);
1230 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1235 if (fid+1 + paramcount != vec_size(sy->out)) {
1236 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1237 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1241 for (i = 0; i < paramcount; ++i)
1242 vec_push(call->params, sy->out[fid+1 + i].out);
1243 vec_shrinkby(sy->out, paramcount);
1244 (void)!ast_call_check_types(call, parser->function->vtype->expression.varparam);
1245 if (parser->max_param_count < paramcount)
1246 parser->max_param_count = paramcount;
1248 if (ast_istype(fun, ast_value)) {
1249 funval = (ast_value*)fun;
1250 if ((fun->flags & AST_FLAG_VARIADIC) &&
1251 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1253 call->va_count = (ast_expression*)fold_constgen_float(parser->fold, (qcfloat_t)paramcount);
1257 /* overwrite fid, the function, with a call */
1258 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1260 if (fun->vtype != TYPE_FUNCTION) {
1261 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1266 parseerror(parser, "could not determine function return type");
1269 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1271 if (fun->flags & AST_FLAG_DEPRECATED) {
1273 return !parsewarning(parser, WARN_DEPRECATED,
1274 "call to function (which is marked deprecated)\n",
1275 "-> it has been declared here: %s:%i",
1276 ast_ctx(fun).file, ast_ctx(fun).line);
1279 return !parsewarning(parser, WARN_DEPRECATED,
1280 "call to `%s` (which is marked deprecated)\n"
1281 "-> `%s` declared here: %s:%i",
1282 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1284 return !parsewarning(parser, WARN_DEPRECATED,
1285 "call to `%s` (deprecated: %s)\n"
1286 "-> `%s` declared here: %s:%i",
1287 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1291 if (vec_size(fun->params) != paramcount &&
1292 !((fun->flags & AST_FLAG_VARIADIC) &&
1293 vec_size(fun->params) < paramcount))
1295 const char *fewmany = (vec_size(fun->params) > paramcount) ? "few" : "many";
1297 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1298 "too %s parameters for call to %s: expected %i, got %i\n"
1299 " -> `%s` has been declared here: %s:%i",
1300 fewmany, fval->name, (int)vec_size(fun->params), (int)paramcount,
1301 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1303 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1304 "too %s parameters for function call: expected %i, got %i\n"
1305 " -> it has been declared here: %s:%i",
1306 fewmany, (int)vec_size(fun->params), (int)paramcount,
1307 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1314 static bool parser_close_paren(parser_t *parser, shunt *sy)
1316 if (!vec_size(sy->ops)) {
1317 parseerror(parser, "unmatched closing paren");
1321 while (vec_size(sy->ops)) {
1322 if (vec_last(sy->ops).isparen) {
1323 if (vec_last(sy->paren) == PAREN_FUNC) {
1325 if (!parser_close_call(parser, sy))
1329 if (vec_last(sy->paren) == PAREN_EXPR) {
1331 if (!vec_size(sy->out)) {
1332 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1333 vec_shrinkby(sy->ops, 1);
1336 vec_shrinkby(sy->ops, 1);
1339 if (vec_last(sy->paren) == PAREN_INDEX) {
1341 /* pop off the parenthesis */
1342 vec_shrinkby(sy->ops, 1);
1343 /* then apply the index operator */
1344 if (!parser_sy_apply_operator(parser, sy))
1348 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1349 vec_last(sy->paren) = PAREN_TERNARY2;
1350 /* pop off the parenthesis */
1351 vec_shrinkby(sy->ops, 1);
1354 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1357 if (!parser_sy_apply_operator(parser, sy))
1363 static void parser_reclassify_token(parser_t *parser)
1366 if (parser->tok >= TOKEN_START)
1368 for (i = 0; i < operator_count; ++i) {
1369 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1370 parser->tok = TOKEN_OPERATOR;
1376 static ast_expression* parse_vararg_do(parser_t *parser)
1378 ast_expression *idx, *out;
1380 ast_value *funtype = parser->function->vtype;
1381 lex_ctx_t ctx = parser_ctx(parser);
1383 if (!parser->function->varargs) {
1384 parseerror(parser, "function has no variable argument list");
1388 if (!parser_next(parser) || parser->tok != '(') {
1389 parseerror(parser, "expected parameter index and type in parenthesis");
1392 if (!parser_next(parser)) {
1393 parseerror(parser, "error parsing parameter index");
1397 idx = parse_expression_leave(parser, true, false, false);
1401 if (parser->tok != ',') {
1402 if (parser->tok != ')') {
1404 parseerror(parser, "expected comma after parameter index");
1407 /* vararg piping: ...(start) */
1408 out = (ast_expression*)ast_argpipe_new(ctx, idx);
1412 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1414 parseerror(parser, "expected typename for vararg");
1418 typevar = parse_typename(parser, NULL, NULL);
1424 if (parser->tok != ')') {
1426 ast_delete(typevar);
1427 parseerror(parser, "expected closing paren");
1431 if (funtype->expression.varparam &&
1432 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1436 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1437 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1438 compile_error(ast_ctx(typevar),
1439 "function was declared to take varargs of type `%s`, requested type is: %s",
1443 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1444 ast_type_adopt(out, typevar);
1445 ast_delete(typevar);
1449 static ast_expression* parse_vararg(parser_t *parser)
1451 bool old_noops = parser->lex->flags.noops;
1453 ast_expression *out;
1455 parser->lex->flags.noops = true;
1456 out = parse_vararg_do(parser);
1458 parser->lex->flags.noops = old_noops;
1462 /* not to be exposed */
1463 bool ftepp_predef_exists(const char *name);
1464 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1466 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1467 parser->tok == TOKEN_IDENT &&
1468 !strcmp(parser_tokval(parser), "_"))
1470 /* a translatable string */
1473 parser->lex->flags.noops = true;
1474 if (!parser_next(parser) || parser->tok != '(') {
1475 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1478 parser->lex->flags.noops = false;
1479 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1480 parseerror(parser, "expected a constant string in translatable-string extension");
1483 val = (ast_value*)fold_constgen_string(parser->fold, parser_tokval(parser), true);
1486 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1488 if (!parser_next(parser) || parser->tok != ')') {
1489 parseerror(parser, "expected closing paren after translatable string");
1494 else if (parser->tok == TOKEN_DOTS)
1497 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1498 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1501 va = parse_vararg(parser);
1504 vec_push(sy->out, syexp(parser_ctx(parser), va));
1507 else if (parser->tok == TOKEN_FLOATCONST) {
1508 ast_expression *val = fold_constgen_float(parser->fold, (parser_token(parser)->constval.f));
1511 vec_push(sy->out, syexp(parser_ctx(parser), val));
1514 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1515 ast_expression *val = fold_constgen_float(parser->fold, (qcfloat_t)(parser_token(parser)->constval.i));
1518 vec_push(sy->out, syexp(parser_ctx(parser), val));
1521 else if (parser->tok == TOKEN_STRINGCONST) {
1522 ast_expression *val = fold_constgen_string(parser->fold, parser_tokval(parser), false);
1525 vec_push(sy->out, syexp(parser_ctx(parser), val));
1528 else if (parser->tok == TOKEN_VECTORCONST) {
1529 ast_expression *val = fold_constgen_vector(parser->fold, parser_token(parser)->constval.v);
1532 vec_push(sy->out, syexp(parser_ctx(parser), val));
1535 else if (parser->tok == TOKEN_IDENT)
1537 const char *ctoken = parser_tokval(parser);
1538 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1539 ast_expression *var;
1540 /* a_vector.{x,y,z} */
1541 if (!vec_size(sy->ops) ||
1542 !vec_last(sy->ops).etype ||
1543 operators[vec_last(sy->ops).etype-1].id != opid1('.'))
1545 /* When adding more intrinsics, fix the above condition */
1548 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1550 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1552 var = parser_find_var(parser, parser_tokval(parser));
1554 var = parser_find_field(parser, parser_tokval(parser));
1556 if (!var && with_labels) {
1557 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1559 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1560 var = (ast_expression*)lbl;
1561 vec_push(parser->labels, lbl);
1564 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
1565 var = (ast_expression*)fold_constgen_string(parser->fold, parser->function->name, false);
1568 * now we try for the real intrinsic hashtable. If the string
1569 * begins with __builtin, we simply skip past it, otherwise we
1570 * use the identifier as is.
1572 if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
1573 var = intrin_func(parser->intrin, parser_tokval(parser));
1577 char *correct = NULL;
1581 * sometimes people use preprocessing predefs without enabling them
1582 * i've done this thousands of times already myself. Lets check for
1583 * it in the predef table. And diagnose it better :)
1585 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
1586 parseerror(parser, "unexpected identifier: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1591 * TODO: determine the best score for the identifier: be it
1592 * a variable, a field.
1594 * We should also consider adding correction tables for
1595 * other things as well.
1597 if (OPTS_OPTION_BOOL(OPTION_CORRECTION) && strlen(parser_tokval(parser)) <= 16) {
1599 correct_init(&corr);
1601 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1602 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1603 if (strcmp(correct, parser_tokval(parser))) {
1610 correct_free(&corr);
1613 parseerror(parser, "unexpected identifier: %s (did you mean %s?)", parser_tokval(parser), correct);
1618 parseerror(parser, "unexpected identifier: %s", parser_tokval(parser));
1624 if (ast_istype(var, ast_value)) {
1625 ((ast_value*)var)->uses++;
1627 else if (ast_istype(var, ast_member)) {
1628 ast_member *mem = (ast_member*)var;
1629 if (ast_istype(mem->owner, ast_value))
1630 ((ast_value*)(mem->owner))->uses++;
1633 vec_push(sy->out, syexp(parser_ctx(parser), var));
1636 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1640 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1642 ast_expression *expr = NULL;
1645 bool wantop = false;
1646 /* only warn once about an assignment in a truth value because the current code
1647 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1649 bool warn_parenthesis = true;
1651 /* count the parens because an if starts with one, so the
1652 * end of a condition is an unmatched closing paren
1656 memset(&sy, 0, sizeof(sy));
1658 parser->lex->flags.noops = false;
1660 parser_reclassify_token(parser);
1664 if (parser->tok == TOKEN_TYPENAME) {
1665 parseerror(parser, "unexpected typename `%s`", parser_tokval(parser));
1669 if (parser->tok == TOKEN_OPERATOR)
1671 /* classify the operator */
1672 const oper_info *op;
1673 const oper_info *olast = NULL;
1675 for (o = 0; o < operator_count; ++o) {
1676 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1677 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1678 !strcmp(parser_tokval(parser), operators[o].op))
1683 if (o == operator_count) {
1684 compile_error(parser_ctx(parser), "unexpected operator: %s", parser_tokval(parser));
1687 /* found an operator */
1690 /* when declaring variables, a comma starts a new variable */
1691 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
1692 /* fixup the token */
1697 /* a colon without a pervious question mark cannot be a ternary */
1698 if (!ternaries && op->id == opid2(':','?')) {
1703 if (op->id == opid1(',')) {
1704 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1705 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1709 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1710 olast = &operators[vec_last(sy.ops).etype-1];
1712 /* first only apply higher precedences, assoc_left+equal comes after we warn about precedence rules */
1713 while (olast && op->prec < olast->prec)
1715 if (!parser_sy_apply_operator(parser, &sy))
1717 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1718 olast = &operators[vec_last(sy.ops).etype-1];
1723 #define IsAssignOp(x) (\
1724 (x) == opid1('=') || \
1725 (x) == opid2('+','=') || \
1726 (x) == opid2('-','=') || \
1727 (x) == opid2('*','=') || \
1728 (x) == opid2('/','=') || \
1729 (x) == opid2('%','=') || \
1730 (x) == opid2('&','=') || \
1731 (x) == opid2('|','=') || \
1732 (x) == opid3('&','~','=') \
1734 if (warn_parenthesis) {
1735 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1736 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1737 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
1740 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1741 warn_parenthesis = false;
1744 if (olast && olast->id != op->id) {
1745 if ((op->id == opid1('&') || op->id == opid1('|') || op->id == opid1('^')) &&
1746 (olast->id == opid1('&') || olast->id == opid1('|') || olast->id == opid1('^')))
1748 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around bitwise operations");
1749 warn_parenthesis = false;
1751 else if ((op->id == opid2('&','&') || op->id == opid2('|','|')) &&
1752 (olast->id == opid2('&','&') || olast->id == opid2('|','|')))
1754 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around logical operations");
1755 warn_parenthesis = false;
1761 (op->prec < olast->prec) ||
1762 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1764 if (!parser_sy_apply_operator(parser, &sy))
1766 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1767 olast = &operators[vec_last(sy.ops).etype-1];
1772 if (op->id == opid1('(')) {
1774 size_t sycount = vec_size(sy.out);
1775 /* we expected an operator, this is the function-call operator */
1776 vec_push(sy.paren, PAREN_FUNC);
1777 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
1778 vec_push(sy.argc, 0);
1780 vec_push(sy.paren, PAREN_EXPR);
1781 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1784 } else if (op->id == opid1('[')) {
1786 parseerror(parser, "unexpected array subscript");
1789 vec_push(sy.paren, PAREN_INDEX);
1790 /* push both the operator and the paren, this makes life easier */
1791 vec_push(sy.ops, syop(parser_ctx(parser), op));
1792 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1794 } else if (op->id == opid2('?',':')) {
1795 vec_push(sy.ops, syop(parser_ctx(parser), op));
1796 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1799 vec_push(sy.paren, PAREN_TERNARY1);
1800 } else if (op->id == opid2(':','?')) {
1801 if (!vec_size(sy.paren)) {
1802 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1805 if (vec_last(sy.paren) != PAREN_TERNARY1) {
1806 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1809 if (!parser_close_paren(parser, &sy))
1811 vec_push(sy.ops, syop(parser_ctx(parser), op));
1815 vec_push(sy.ops, syop(parser_ctx(parser), op));
1816 wantop = !!(op->flags & OP_SUFFIX);
1819 else if (parser->tok == ')') {
1820 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1821 if (!parser_sy_apply_operator(parser, &sy))
1824 if (!vec_size(sy.paren))
1827 if (vec_last(sy.paren) == PAREN_TERNARY1) {
1828 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
1831 if (!parser_close_paren(parser, &sy))
1834 /* must be a function call without parameters */
1835 if (vec_last(sy.paren) != PAREN_FUNC) {
1836 parseerror(parser, "closing paren in invalid position");
1839 if (!parser_close_paren(parser, &sy))
1844 else if (parser->tok == '(') {
1845 parseerror(parser, "internal error: '(' should be classified as operator");
1848 else if (parser->tok == '[') {
1849 parseerror(parser, "internal error: '[' should be classified as operator");
1852 else if (parser->tok == ']') {
1853 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1854 if (!parser_sy_apply_operator(parser, &sy))
1857 if (!vec_size(sy.paren))
1859 if (vec_last(sy.paren) != PAREN_INDEX) {
1860 parseerror(parser, "mismatched parentheses, unexpected ']'");
1863 if (!parser_close_paren(parser, &sy))
1868 if (!parse_sya_operand(parser, &sy, with_labels))
1871 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
1872 vec_last(sy.argc)++;
1877 /* in this case we might want to allow constant string concatenation */
1878 bool concatenated = false;
1879 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
1880 ast_expression *lexpr = vec_last(sy.out).out;
1881 if (ast_istype(lexpr, ast_value)) {
1882 ast_value *last = (ast_value*)lexpr;
1883 if (last->isimm == true && last->cvq == CV_CONST &&
1884 last->hasvalue && last->expression.vtype == TYPE_STRING)
1886 char *newstr = NULL;
1887 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
1888 vec_last(sy.out).out = (ast_expression*)fold_constgen_string(parser->fold, newstr, false);
1890 concatenated = true;
1894 if (!concatenated) {
1895 parseerror(parser, "expected operator or end of statement");
1900 if (!parser_next(parser)) {
1903 if (parser->tok == ';' ||
1904 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
1905 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
1911 while (vec_size(sy.ops)) {
1912 if (!parser_sy_apply_operator(parser, &sy))
1916 parser->lex->flags.noops = true;
1917 if (vec_size(sy.out) != 1) {
1918 parseerror(parser, "expression expected");
1921 expr = sy.out[0].out;
1924 if (vec_size(sy.paren)) {
1925 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
1933 parser->lex->flags.noops = true;
1934 for (i = 0; i < vec_size(sy.out); ++i) {
1936 ast_unref(sy.out[i].out);
1945 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
1947 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
1950 if (parser->tok != ';') {
1951 parseerror(parser, "semicolon expected after expression");
1955 if (!parser_next(parser)) {
1962 static void parser_enterblock(parser_t *parser)
1964 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1965 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1966 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1967 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1968 vec_push(parser->_block_ctx, parser_ctx(parser));
1971 vec_push(parser->correct_variables, correct_trie_new());
1972 vec_push(parser->correct_variables_score, NULL);
1975 static bool parser_leaveblock(parser_t *parser)
1978 size_t locals, typedefs;
1980 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1981 parseerror(parser, "internal error: parser_leaveblock with no block");
1985 util_htdel(vec_last(parser->variables));
1986 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
1988 vec_pop(parser->variables);
1989 vec_pop(parser->correct_variables);
1990 vec_pop(parser->correct_variables_score);
1991 if (!vec_size(parser->_blocklocals)) {
1992 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1996 locals = vec_last(parser->_blocklocals);
1997 vec_pop(parser->_blocklocals);
1998 while (vec_size(parser->_locals) != locals) {
1999 ast_expression *e = vec_last(parser->_locals);
2000 ast_value *v = (ast_value*)e;
2001 vec_pop(parser->_locals);
2002 if (ast_istype(e, ast_value) && !v->uses) {
2003 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2008 typedefs = vec_last(parser->_blocktypedefs);
2009 while (vec_size(parser->_typedefs) != typedefs) {
2010 ast_delete(vec_last(parser->_typedefs));
2011 vec_pop(parser->_typedefs);
2013 util_htdel(vec_last(parser->typedefs));
2014 vec_pop(parser->typedefs);
2016 vec_pop(parser->_block_ctx);
2021 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2023 vec_push(parser->_locals, e);
2024 util_htset(vec_last(parser->variables), name, (void*)e);
2028 vec_last(parser->correct_variables),
2029 &vec_last(parser->correct_variables_score),
2034 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2036 vec_push(parser->globals, e);
2037 util_htset(parser->htglobals, name, e);
2041 parser->correct_variables[0],
2042 &parser->correct_variables_score[0],
2047 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2051 ast_expression *prev;
2053 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2055 ast_type_to_string(cond, ty, sizeof(ty));
2056 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2059 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2062 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2065 parseerror(parser, "internal error: failed to process condition");
2070 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2072 /* vector types need to be cast to true booleans */
2073 ast_binary *bin = (ast_binary*)cond;
2074 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2076 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2078 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2081 parseerror(parser, "internal error: failed to process condition");
2088 unary = (ast_unary*)cond;
2089 /* ast_istype dereferences cond, should test here for safety */
2090 while (cond && ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2092 cond = unary->operand;
2093 unary->operand = NULL;
2096 unary = (ast_unary*)cond;
2100 parseerror(parser, "internal error: failed to process condition");
2102 if (ifnot) *_ifnot = !*_ifnot;
2106 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2109 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2112 lex_ctx_t ctx = parser_ctx(parser);
2114 (void)block; /* not touching */
2116 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2117 if (!parser_next(parser)) {
2118 parseerror(parser, "expected condition or 'not'");
2121 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2123 if (!parser_next(parser)) {
2124 parseerror(parser, "expected condition in parenthesis");
2128 if (parser->tok != '(') {
2129 parseerror(parser, "expected 'if' condition in parenthesis");
2132 /* parse into the expression */
2133 if (!parser_next(parser)) {
2134 parseerror(parser, "expected 'if' condition after opening paren");
2137 /* parse the condition */
2138 cond = parse_expression_leave(parser, false, true, false);
2142 if (parser->tok != ')') {
2143 parseerror(parser, "expected closing paren after 'if' condition");
2147 /* parse into the 'then' branch */
2148 if (!parser_next(parser)) {
2149 parseerror(parser, "expected statement for on-true branch of 'if'");
2153 if (!parse_statement_or_block(parser, &ontrue)) {
2158 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2159 /* check for an else */
2160 if (!strcmp(parser_tokval(parser), "else")) {
2161 /* parse into the 'else' branch */
2162 if (!parser_next(parser)) {
2163 parseerror(parser, "expected on-false branch after 'else'");
2168 if (!parse_statement_or_block(parser, &onfalse)) {
2175 cond = process_condition(parser, cond, &ifnot);
2177 if (ontrue) ast_delete(ontrue);
2178 if (onfalse) ast_delete(onfalse);
2183 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2185 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2186 *out = (ast_expression*)ifthen;
2190 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2191 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2196 /* skip the 'while' and get the body */
2197 if (!parser_next(parser)) {
2198 if (OPTS_FLAG(LOOP_LABELS))
2199 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2201 parseerror(parser, "expected 'while' condition in parenthesis");
2205 if (parser->tok == ':') {
2206 if (!OPTS_FLAG(LOOP_LABELS))
2207 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2208 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2209 parseerror(parser, "expected loop label");
2212 label = util_strdup(parser_tokval(parser));
2213 if (!parser_next(parser)) {
2215 parseerror(parser, "expected 'while' condition in parenthesis");
2220 if (parser->tok != '(') {
2221 parseerror(parser, "expected 'while' condition in parenthesis");
2225 vec_push(parser->breaks, label);
2226 vec_push(parser->continues, label);
2228 rv = parse_while_go(parser, block, out);
2231 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2232 parseerror(parser, "internal error: label stack corrupted");
2238 vec_pop(parser->breaks);
2239 vec_pop(parser->continues);
2244 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2247 ast_expression *cond, *ontrue;
2251 lex_ctx_t ctx = parser_ctx(parser);
2253 (void)block; /* not touching */
2255 /* parse into the expression */
2256 if (!parser_next(parser)) {
2257 parseerror(parser, "expected 'while' condition after opening paren");
2260 /* parse the condition */
2261 cond = parse_expression_leave(parser, false, true, false);
2265 if (parser->tok != ')') {
2266 parseerror(parser, "expected closing paren after 'while' condition");
2270 /* parse into the 'then' branch */
2271 if (!parser_next(parser)) {
2272 parseerror(parser, "expected while-loop body");
2276 if (!parse_statement_or_block(parser, &ontrue)) {
2281 cond = process_condition(parser, cond, &ifnot);
2286 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2287 *out = (ast_expression*)aloop;
2291 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2292 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2297 /* skip the 'do' and get the body */
2298 if (!parser_next(parser)) {
2299 if (OPTS_FLAG(LOOP_LABELS))
2300 parseerror(parser, "expected loop label or body");
2302 parseerror(parser, "expected loop body");
2306 if (parser->tok == ':') {
2307 if (!OPTS_FLAG(LOOP_LABELS))
2308 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2309 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2310 parseerror(parser, "expected loop label");
2313 label = util_strdup(parser_tokval(parser));
2314 if (!parser_next(parser)) {
2316 parseerror(parser, "expected loop body");
2321 vec_push(parser->breaks, label);
2322 vec_push(parser->continues, label);
2324 rv = parse_dowhile_go(parser, block, out);
2327 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2328 parseerror(parser, "internal error: label stack corrupted");
2331 * Test for NULL otherwise ast_delete dereferences null pointer
2339 vec_pop(parser->breaks);
2340 vec_pop(parser->continues);
2345 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2348 ast_expression *cond, *ontrue;
2352 lex_ctx_t ctx = parser_ctx(parser);
2354 (void)block; /* not touching */
2356 if (!parse_statement_or_block(parser, &ontrue))
2359 /* expect the "while" */
2360 if (parser->tok != TOKEN_KEYWORD ||
2361 strcmp(parser_tokval(parser), "while"))
2363 parseerror(parser, "expected 'while' and condition");
2368 /* skip the 'while' and check for opening paren */
2369 if (!parser_next(parser) || parser->tok != '(') {
2370 parseerror(parser, "expected 'while' condition in parenthesis");
2374 /* parse into the expression */
2375 if (!parser_next(parser)) {
2376 parseerror(parser, "expected 'while' condition after opening paren");
2380 /* parse the condition */
2381 cond = parse_expression_leave(parser, false, true, false);
2385 if (parser->tok != ')') {
2386 parseerror(parser, "expected closing paren after 'while' condition");
2392 if (!parser_next(parser) || parser->tok != ';') {
2393 parseerror(parser, "expected semicolon after condition");
2399 if (!parser_next(parser)) {
2400 parseerror(parser, "parse error");
2406 cond = process_condition(parser, cond, &ifnot);
2411 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2412 *out = (ast_expression*)aloop;
2416 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2417 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2422 /* skip the 'for' and check for opening paren */
2423 if (!parser_next(parser)) {
2424 if (OPTS_FLAG(LOOP_LABELS))
2425 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2427 parseerror(parser, "expected 'for' expressions in parenthesis");
2431 if (parser->tok == ':') {
2432 if (!OPTS_FLAG(LOOP_LABELS))
2433 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2434 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2435 parseerror(parser, "expected loop label");
2438 label = util_strdup(parser_tokval(parser));
2439 if (!parser_next(parser)) {
2441 parseerror(parser, "expected 'for' expressions in parenthesis");
2446 if (parser->tok != '(') {
2447 parseerror(parser, "expected 'for' expressions in parenthesis");
2451 vec_push(parser->breaks, label);
2452 vec_push(parser->continues, label);
2454 rv = parse_for_go(parser, block, out);
2457 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2458 parseerror(parser, "internal error: label stack corrupted");
2464 vec_pop(parser->breaks);
2465 vec_pop(parser->continues);
2469 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2472 ast_expression *initexpr, *cond, *increment, *ontrue;
2477 lex_ctx_t ctx = parser_ctx(parser);
2479 parser_enterblock(parser);
2486 /* parse into the expression */
2487 if (!parser_next(parser)) {
2488 parseerror(parser, "expected 'for' initializer after opening paren");
2493 if (parser->tok == TOKEN_IDENT)
2494 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2496 if (typevar || parser->tok == TOKEN_TYPENAME) {
2498 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2499 if (parsewarning(parser, WARN_EXTENSIONS,
2500 "current standard does not allow variable declarations in for-loop initializers"))
2504 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2507 else if (parser->tok != ';')
2509 initexpr = parse_expression_leave(parser, false, false, false);
2514 /* move on to condition */
2515 if (parser->tok != ';') {
2516 parseerror(parser, "expected semicolon after for-loop initializer");
2519 if (!parser_next(parser)) {
2520 parseerror(parser, "expected for-loop condition");
2524 /* parse the condition */
2525 if (parser->tok != ';') {
2526 cond = parse_expression_leave(parser, false, true, false);
2531 /* move on to incrementor */
2532 if (parser->tok != ';') {
2533 parseerror(parser, "expected semicolon after for-loop initializer");
2536 if (!parser_next(parser)) {
2537 parseerror(parser, "expected for-loop condition");
2541 /* parse the incrementor */
2542 if (parser->tok != ')') {
2543 lex_ctx_t condctx = parser_ctx(parser);
2544 increment = parse_expression_leave(parser, false, false, false);
2547 if (!ast_side_effects(increment)) {
2548 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2554 if (parser->tok != ')') {
2555 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2558 /* parse into the 'then' branch */
2559 if (!parser_next(parser)) {
2560 parseerror(parser, "expected for-loop body");
2563 if (!parse_statement_or_block(parser, &ontrue))
2567 cond = process_condition(parser, cond, &ifnot);
2571 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2572 *out = (ast_expression*)aloop;
2574 if (!parser_leaveblock(parser)) {
2580 if (initexpr) ast_unref(initexpr);
2581 if (cond) ast_unref(cond);
2582 if (increment) ast_unref(increment);
2583 (void)!parser_leaveblock(parser);
2587 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2589 ast_expression *exp = NULL;
2590 ast_expression *var = NULL;
2591 ast_return *ret = NULL;
2592 ast_value *retval = parser->function->return_value;
2593 ast_value *expected = parser->function->vtype;
2595 lex_ctx_t ctx = parser_ctx(parser);
2597 (void)block; /* not touching */
2599 if (!parser_next(parser)) {
2600 parseerror(parser, "expected return expression");
2604 /* return assignments */
2605 if (parser->tok == '=') {
2606 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
2607 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
2611 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
2613 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
2614 parseerror(parser, "invalid return type: `%s'", ty1);
2618 if (!parser_next(parser)) {
2619 parseerror(parser, "expected return assignment expression");
2623 if (!(exp = parse_expression_leave(parser, false, false, false)))
2626 /* prepare the return value */
2628 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
2629 ast_type_adopt(retval, expected->expression.next);
2630 parser->function->return_value = retval;
2633 if (!ast_compare_type(exp, (ast_expression*)retval)) {
2634 char ty1[1024], ty2[1024];
2635 ast_type_to_string(exp, ty1, sizeof(ty1));
2636 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
2637 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
2640 /* store to 'return' local variable */
2641 var = (ast_expression*)ast_store_new(
2643 type_store_instr[expected->expression.next->vtype],
2644 (ast_expression*)retval, exp);
2651 if (parser->tok != ';')
2652 parseerror(parser, "missing semicolon after return assignment");
2653 else if (!parser_next(parser))
2654 parseerror(parser, "parse error after return assignment");
2660 if (parser->tok != ';') {
2661 exp = parse_expression(parser, false, false);
2665 if (exp->vtype != TYPE_NIL &&
2666 exp->vtype != ((ast_expression*)expected)->next->vtype)
2668 parseerror(parser, "return with invalid expression");
2671 ret = ast_return_new(ctx, exp);
2677 if (!parser_next(parser))
2678 parseerror(parser, "parse error");
2680 if (!retval && expected->expression.next->vtype != TYPE_VOID)
2682 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2684 ret = ast_return_new(ctx, (ast_expression*)retval);
2686 *out = (ast_expression*)ret;
2690 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2693 unsigned int levels = 0;
2694 lex_ctx_t ctx = parser_ctx(parser);
2695 const char **loops = (is_continue ? parser->continues : parser->breaks);
2697 (void)block; /* not touching */
2698 if (!parser_next(parser)) {
2699 parseerror(parser, "expected semicolon or loop label");
2703 if (!vec_size(loops)) {
2705 parseerror(parser, "`continue` can only be used inside loops");
2707 parseerror(parser, "`break` can only be used inside loops or switches");
2710 if (parser->tok == TOKEN_IDENT) {
2711 if (!OPTS_FLAG(LOOP_LABELS))
2712 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2713 i = vec_size(loops);
2715 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2718 parseerror(parser, "no such loop to %s: `%s`",
2719 (is_continue ? "continue" : "break out of"),
2720 parser_tokval(parser));
2725 if (!parser_next(parser)) {
2726 parseerror(parser, "expected semicolon");
2731 if (parser->tok != ';') {
2732 parseerror(parser, "expected semicolon");
2736 if (!parser_next(parser))
2737 parseerror(parser, "parse error");
2739 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2743 /* returns true when it was a variable qualifier, false otherwise!
2744 * on error, cvq is set to CV_WRONG
2746 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2748 bool had_const = false;
2749 bool had_var = false;
2750 bool had_noref = false;
2751 bool had_attrib = false;
2752 bool had_static = false;
2757 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2759 /* parse an attribute */
2760 if (!parser_next(parser)) {
2761 parseerror(parser, "expected attribute after `[[`");
2765 if (!strcmp(parser_tokval(parser), "noreturn")) {
2766 flags |= AST_FLAG_NORETURN;
2767 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2768 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2773 else if (!strcmp(parser_tokval(parser), "noref")) {
2775 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2776 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2781 else if (!strcmp(parser_tokval(parser), "inline")) {
2782 flags |= AST_FLAG_INLINE;
2783 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2784 parseerror(parser, "`inline` attribute has no parameters, expected `]]`");
2789 else if (!strcmp(parser_tokval(parser), "eraseable")) {
2790 flags |= AST_FLAG_ERASEABLE;
2791 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2792 parseerror(parser, "`eraseable` attribute has no parameters, expected `]]`");
2797 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
2798 flags |= AST_FLAG_ALIAS;
2801 if (!parser_next(parser)) {
2802 parseerror(parser, "parse error in attribute");
2806 if (parser->tok == '(') {
2807 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2808 parseerror(parser, "`alias` attribute missing parameter");
2812 *message = util_strdup(parser_tokval(parser));
2814 if (!parser_next(parser)) {
2815 parseerror(parser, "parse error in attribute");
2819 if (parser->tok != ')') {
2820 parseerror(parser, "`alias` attribute expected `)` after parameter");
2824 if (!parser_next(parser)) {
2825 parseerror(parser, "parse error in attribute");
2830 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2831 parseerror(parser, "`alias` attribute expected `]]`");
2835 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2836 flags |= AST_FLAG_DEPRECATED;
2839 if (!parser_next(parser)) {
2840 parseerror(parser, "parse error in attribute");
2844 if (parser->tok == '(') {
2845 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2846 parseerror(parser, "`deprecated` attribute missing parameter");
2850 *message = util_strdup(parser_tokval(parser));
2852 if (!parser_next(parser)) {
2853 parseerror(parser, "parse error in attribute");
2857 if(parser->tok != ')') {
2858 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2862 if (!parser_next(parser)) {
2863 parseerror(parser, "parse error in attribute");
2868 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2869 parseerror(parser, "`deprecated` attribute expected `]]`");
2872 if (*message) mem_d(*message);
2880 /* Skip tokens until we hit a ]] */
2881 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2882 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2883 if (!parser_next(parser)) {
2884 parseerror(parser, "error inside attribute");
2891 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2893 else if (!strcmp(parser_tokval(parser), "const"))
2895 else if (!strcmp(parser_tokval(parser), "var"))
2897 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2899 else if (!strcmp(parser_tokval(parser), "noref"))
2901 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2906 if (!parser_next(parser))
2916 *is_static = had_static;
2920 parseerror(parser, "parse error after variable qualifier");
2925 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2926 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2931 /* skip the 'while' and get the body */
2932 if (!parser_next(parser)) {
2933 if (OPTS_FLAG(LOOP_LABELS))
2934 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2936 parseerror(parser, "expected 'switch' operand in parenthesis");
2940 if (parser->tok == ':') {
2941 if (!OPTS_FLAG(LOOP_LABELS))
2942 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2943 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2944 parseerror(parser, "expected loop label");
2947 label = util_strdup(parser_tokval(parser));
2948 if (!parser_next(parser)) {
2950 parseerror(parser, "expected 'switch' operand in parenthesis");
2955 if (parser->tok != '(') {
2956 parseerror(parser, "expected 'switch' operand in parenthesis");
2960 vec_push(parser->breaks, label);
2962 rv = parse_switch_go(parser, block, out);
2965 if (vec_last(parser->breaks) != label) {
2966 parseerror(parser, "internal error: label stack corrupted");
2972 vec_pop(parser->breaks);
2977 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
2979 ast_expression *operand;
2982 ast_switch *switchnode;
2983 ast_switch_case swcase;
2986 bool noref, is_static;
2987 uint32_t qflags = 0;
2989 lex_ctx_t ctx = parser_ctx(parser);
2991 (void)block; /* not touching */
2994 /* parse into the expression */
2995 if (!parser_next(parser)) {
2996 parseerror(parser, "expected switch operand");
2999 /* parse the operand */
3000 operand = parse_expression_leave(parser, false, false, false);
3004 switchnode = ast_switch_new(ctx, operand);
3007 if (parser->tok != ')') {
3008 ast_delete(switchnode);
3009 parseerror(parser, "expected closing paren after 'switch' operand");
3013 /* parse over the opening paren */
3014 if (!parser_next(parser) || parser->tok != '{') {
3015 ast_delete(switchnode);
3016 parseerror(parser, "expected list of cases");
3020 if (!parser_next(parser)) {
3021 ast_delete(switchnode);
3022 parseerror(parser, "expected 'case' or 'default'");
3026 /* new block; allow some variables to be declared here */
3027 parser_enterblock(parser);
3030 if (parser->tok == TOKEN_IDENT)
3031 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3032 if (typevar || parser->tok == TOKEN_TYPENAME) {
3033 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3034 ast_delete(switchnode);
3039 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3041 if (cvq == CV_WRONG) {
3042 ast_delete(switchnode);
3045 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3046 ast_delete(switchnode);
3055 while (parser->tok != '}') {
3056 ast_block *caseblock;
3058 if (!strcmp(parser_tokval(parser), "case")) {
3059 if (!parser_next(parser)) {
3060 ast_delete(switchnode);
3061 parseerror(parser, "expected expression for case");
3064 swcase.value = parse_expression_leave(parser, false, false, false);
3065 if (!swcase.value) {
3066 ast_delete(switchnode);
3067 parseerror(parser, "expected expression for case");
3070 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3071 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3072 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3078 else if (!strcmp(parser_tokval(parser), "default")) {
3079 swcase.value = NULL;
3080 if (!parser_next(parser)) {
3081 ast_delete(switchnode);
3082 parseerror(parser, "expected colon");
3087 ast_delete(switchnode);
3088 parseerror(parser, "expected 'case' or 'default'");
3092 /* Now the colon and body */
3093 if (parser->tok != ':') {
3094 if (swcase.value) ast_unref(swcase.value);
3095 ast_delete(switchnode);
3096 parseerror(parser, "expected colon");
3100 if (!parser_next(parser)) {
3101 if (swcase.value) ast_unref(swcase.value);
3102 ast_delete(switchnode);
3103 parseerror(parser, "expected statements or case");
3106 caseblock = ast_block_new(parser_ctx(parser));
3108 if (swcase.value) ast_unref(swcase.value);
3109 ast_delete(switchnode);
3112 swcase.code = (ast_expression*)caseblock;
3113 vec_push(switchnode->cases, swcase);
3115 ast_expression *expr;
3116 if (parser->tok == '}')
3118 if (parser->tok == TOKEN_KEYWORD) {
3119 if (!strcmp(parser_tokval(parser), "case") ||
3120 !strcmp(parser_tokval(parser), "default"))
3125 if (!parse_statement(parser, caseblock, &expr, true)) {
3126 ast_delete(switchnode);
3131 if (!ast_block_add_expr(caseblock, expr)) {
3132 ast_delete(switchnode);
3138 parser_leaveblock(parser);
3141 if (parser->tok != '}') {
3142 ast_delete(switchnode);
3143 parseerror(parser, "expected closing paren of case list");
3146 if (!parser_next(parser)) {
3147 ast_delete(switchnode);
3148 parseerror(parser, "parse error after switch");
3151 *out = (ast_expression*)switchnode;
3155 /* parse computed goto sides */
3156 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3157 ast_expression *on_true;
3158 ast_expression *on_false;
3159 ast_expression *cond;
3164 if (ast_istype(*side, ast_ternary)) {
3165 ast_ternary *tern = (ast_ternary*)*side;
3166 on_true = parse_goto_computed(parser, &tern->on_true);
3167 on_false = parse_goto_computed(parser, &tern->on_false);
3169 if (!on_true || !on_false) {
3170 parseerror(parser, "expected label or expression in ternary");
3171 if (on_true) ast_unref(on_true);
3172 if (on_false) ast_unref(on_false);
3180 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3181 } else if (ast_istype(*side, ast_label)) {
3182 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3183 ast_goto_set_label(gt, ((ast_label*)*side));
3185 return (ast_expression*)gt;
3190 static bool parse_goto(parser_t *parser, ast_expression **out)
3192 ast_goto *gt = NULL;
3193 ast_expression *lbl;
3195 if (!parser_next(parser))
3198 if (parser->tok != TOKEN_IDENT) {
3199 ast_expression *expression;
3201 /* could be an expression i.e computed goto :-) */
3202 if (parser->tok != '(') {
3203 parseerror(parser, "expected label name after `goto`");
3207 /* failed to parse expression for goto */
3208 if (!(expression = parse_expression(parser, false, true)) ||
3209 !(*out = parse_goto_computed(parser, &expression))) {
3210 parseerror(parser, "invalid goto expression");
3212 ast_unref(expression);
3219 /* not computed goto */
3220 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3221 lbl = parser_find_label(parser, gt->name);
3223 if (!ast_istype(lbl, ast_label)) {
3224 parseerror(parser, "internal error: label is not an ast_label");
3228 ast_goto_set_label(gt, (ast_label*)lbl);
3231 vec_push(parser->gotos, gt);
3233 if (!parser_next(parser) || parser->tok != ';') {
3234 parseerror(parser, "semicolon expected after goto label");
3237 if (!parser_next(parser)) {
3238 parseerror(parser, "parse error after goto");
3242 *out = (ast_expression*)gt;
3246 static bool parse_skipwhite(parser_t *parser)
3249 if (!parser_next(parser))
3251 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3252 return parser->tok < TOKEN_ERROR;
3255 static bool parse_eol(parser_t *parser)
3257 if (!parse_skipwhite(parser))
3259 return parser->tok == TOKEN_EOL;
3262 static bool parse_pragma_do(parser_t *parser)
3264 if (!parser_next(parser) ||
3265 parser->tok != TOKEN_IDENT ||
3266 strcmp(parser_tokval(parser), "pragma"))
3268 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3271 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3272 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3276 if (!strcmp(parser_tokval(parser), "noref")) {
3277 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3278 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3281 parser->noref = !!parser_token(parser)->constval.i;
3282 if (!parse_eol(parser)) {
3283 parseerror(parser, "parse error after `noref` pragma");
3289 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3296 static bool parse_pragma(parser_t *parser)
3299 parser->lex->flags.preprocessing = true;
3300 parser->lex->flags.mergelines = true;
3301 rv = parse_pragma_do(parser);
3302 if (parser->tok != TOKEN_EOL) {
3303 parseerror(parser, "junk after pragma");
3306 parser->lex->flags.preprocessing = false;
3307 parser->lex->flags.mergelines = false;
3308 if (!parser_next(parser)) {
3309 parseerror(parser, "parse error after pragma");
3315 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3317 bool noref, is_static;
3319 uint32_t qflags = 0;
3320 ast_value *typevar = NULL;
3321 char *vstring = NULL;
3325 if (parser->tok == TOKEN_IDENT)
3326 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3328 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3330 /* local variable */
3332 parseerror(parser, "cannot declare a variable from here");
3335 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3336 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3339 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3343 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3345 if (cvq == CV_WRONG)
3347 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3349 else if (parser->tok == TOKEN_KEYWORD)
3351 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3356 if (!parser_next(parser)) {
3357 parseerror(parser, "parse error after __builtin_debug_printtype");
3361 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3363 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3364 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3365 if (!parser_next(parser)) {
3366 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3372 if (!parse_statement(parser, block, out, allow_cases))
3375 con_out("__builtin_debug_printtype: got no output node\n");
3378 ast_type_to_string(*out, ty, sizeof(ty));
3379 con_out("__builtin_debug_printtype: `%s`\n", ty);
3384 else if (!strcmp(parser_tokval(parser), "return"))
3386 return parse_return(parser, block, out);
3388 else if (!strcmp(parser_tokval(parser), "if"))
3390 return parse_if(parser, block, out);
3392 else if (!strcmp(parser_tokval(parser), "while"))
3394 return parse_while(parser, block, out);
3396 else if (!strcmp(parser_tokval(parser), "do"))
3398 return parse_dowhile(parser, block, out);
3400 else if (!strcmp(parser_tokval(parser), "for"))
3402 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3403 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3406 return parse_for(parser, block, out);
3408 else if (!strcmp(parser_tokval(parser), "break"))
3410 return parse_break_continue(parser, block, out, false);
3412 else if (!strcmp(parser_tokval(parser), "continue"))
3414 return parse_break_continue(parser, block, out, true);
3416 else if (!strcmp(parser_tokval(parser), "switch"))
3418 return parse_switch(parser, block, out);
3420 else if (!strcmp(parser_tokval(parser), "case") ||
3421 !strcmp(parser_tokval(parser), "default"))
3424 parseerror(parser, "unexpected 'case' label");
3429 else if (!strcmp(parser_tokval(parser), "goto"))
3431 return parse_goto(parser, out);
3433 else if (!strcmp(parser_tokval(parser), "typedef"))
3435 if (!parser_next(parser)) {
3436 parseerror(parser, "expected type definition after 'typedef'");
3439 return parse_typedef(parser);
3441 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3444 else if (parser->tok == '{')
3447 inner = parse_block(parser);
3450 *out = (ast_expression*)inner;
3453 else if (parser->tok == ':')
3457 if (!parser_next(parser)) {
3458 parseerror(parser, "expected label name");
3461 if (parser->tok != TOKEN_IDENT) {
3462 parseerror(parser, "label must be an identifier");
3465 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3467 if (!label->undefined) {
3468 parseerror(parser, "label `%s` already defined", label->name);
3471 label->undefined = false;
3474 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3475 vec_push(parser->labels, label);
3477 *out = (ast_expression*)label;
3478 if (!parser_next(parser)) {
3479 parseerror(parser, "parse error after label");
3482 for (i = 0; i < vec_size(parser->gotos); ++i) {
3483 if (!strcmp(parser->gotos[i]->name, label->name)) {
3484 ast_goto_set_label(parser->gotos[i], label);
3485 vec_remove(parser->gotos, i, 1);
3491 else if (parser->tok == ';')
3493 if (!parser_next(parser)) {
3494 parseerror(parser, "parse error after empty statement");
3501 lex_ctx_t ctx = parser_ctx(parser);
3502 ast_expression *exp = parse_expression(parser, false, false);
3506 if (!ast_side_effects(exp)) {
3507 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3514 static bool parse_enum(parser_t *parser)
3517 bool reverse = false;
3519 ast_value **values = NULL;
3520 ast_value *var = NULL;
3523 ast_expression *old;
3525 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3526 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3530 /* enumeration attributes (can add more later) */
3531 if (parser->tok == ':') {
3532 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3533 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3538 if (!strcmp(parser_tokval(parser), "flag")) {
3542 else if (!strcmp(parser_tokval(parser), "reverse")) {
3546 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3550 if (!parser_next(parser) || parser->tok != '{') {
3551 parseerror(parser, "expected `{` after enum attribute ");
3557 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3558 if (parser->tok == '}') {
3559 /* allow an empty enum */
3562 parseerror(parser, "expected identifier or `}`");
3566 old = parser_find_field(parser, parser_tokval(parser));
3568 old = parser_find_global(parser, parser_tokval(parser));
3570 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3571 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3575 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3576 vec_push(values, var);
3577 var->cvq = CV_CONST;
3578 var->hasvalue = true;
3580 /* for flagged enumerations increment in POTs of TWO */
3581 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3582 parser_addglobal(parser, var->name, (ast_expression*)var);
3584 if (!parser_next(parser)) {
3585 parseerror(parser, "expected `=`, `}` or comma after identifier");
3589 if (parser->tok == ',')
3591 if (parser->tok == '}')
3593 if (parser->tok != '=') {
3594 parseerror(parser, "expected `=`, `}` or comma after identifier");
3598 if (!parser_next(parser)) {
3599 parseerror(parser, "expected expression after `=`");
3603 /* We got a value! */
3604 old = parse_expression_leave(parser, true, false, false);
3605 asvalue = (ast_value*)old;
3606 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3607 compile_error(ast_ctx(var), "constant value or expression expected");
3610 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3612 if (parser->tok == '}')
3614 if (parser->tok != ',') {
3615 parseerror(parser, "expected `}` or comma after expression");
3620 /* patch them all (for reversed attribute) */
3623 for (i = 0; i < vec_size(values); i++)
3624 values[i]->constval.vfloat = vec_size(values) - i - 1;
3627 if (parser->tok != '}') {
3628 parseerror(parser, "internal error: breaking without `}`");
3632 if (!parser_next(parser) || parser->tok != ';') {
3633 parseerror(parser, "expected semicolon after enumeration");
3637 if (!parser_next(parser)) {
3638 parseerror(parser, "parse error after enumeration");
3650 static bool parse_block_into(parser_t *parser, ast_block *block)
3654 parser_enterblock(parser);
3656 if (!parser_next(parser)) { /* skip the '{' */
3657 parseerror(parser, "expected function body");
3661 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3663 ast_expression *expr = NULL;
3664 if (parser->tok == '}')
3667 if (!parse_statement(parser, block, &expr, false)) {
3668 /* parseerror(parser, "parse error"); */
3674 if (!ast_block_add_expr(block, expr)) {
3681 if (parser->tok != '}') {
3684 (void)parser_next(parser);
3688 if (!parser_leaveblock(parser))
3690 return retval && !!block;
3693 static ast_block* parse_block(parser_t *parser)
3696 block = ast_block_new(parser_ctx(parser));
3699 if (!parse_block_into(parser, block)) {
3700 ast_block_delete(block);
3706 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3708 if (parser->tok == '{') {
3709 *out = (ast_expression*)parse_block(parser);
3712 return parse_statement(parser, NULL, out, false);
3715 static bool create_vector_members(ast_value *var, ast_member **me)
3718 size_t len = strlen(var->name);
3720 for (i = 0; i < 3; ++i) {
3721 char *name = (char*)mem_a(len+3);
3722 memcpy(name, var->name, len);
3724 name[len+1] = 'x'+i;
3726 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3735 do { ast_member_delete(me[--i]); } while(i);
3739 static bool parse_function_body(parser_t *parser, ast_value *var)
3741 ast_block *block = NULL;
3746 ast_expression *framenum = NULL;
3747 ast_expression *nextthink = NULL;
3748 /* None of the following have to be deleted */
3749 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3750 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3751 bool has_frame_think;
3755 has_frame_think = false;
3756 old = parser->function;
3758 if (var->expression.flags & AST_FLAG_ALIAS) {
3759 parseerror(parser, "function aliases cannot have bodies");
3763 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3764 parseerror(parser, "gotos/labels leaking");
3768 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
3769 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3770 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
3776 if (parser->tok == '[') {
3777 /* got a frame definition: [ framenum, nextthink ]
3778 * this translates to:
3779 * self.frame = framenum;
3780 * self.nextthink = time + 0.1;
3781 * self.think = nextthink;
3785 fld_think = parser_find_field(parser, "think");
3786 fld_nextthink = parser_find_field(parser, "nextthink");
3787 fld_frame = parser_find_field(parser, "frame");
3788 if (!fld_think || !fld_nextthink || !fld_frame) {
3789 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3790 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3793 gbl_time = parser_find_global(parser, "time");
3794 gbl_self = parser_find_global(parser, "self");
3795 if (!gbl_time || !gbl_self) {
3796 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3797 parseerror(parser, "please declare the following globals: `time`, `self`");
3801 if (!parser_next(parser))
3804 framenum = parse_expression_leave(parser, true, false, false);
3806 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3809 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3810 ast_unref(framenum);
3811 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3815 if (parser->tok != ',') {
3816 ast_unref(framenum);
3817 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3818 parseerror(parser, "Got a %i\n", parser->tok);
3822 if (!parser_next(parser)) {
3823 ast_unref(framenum);
3827 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3829 /* qc allows the use of not-yet-declared functions here
3830 * - this automatically creates a prototype */
3831 ast_value *thinkfunc;
3832 ast_expression *functype = fld_think->next;
3834 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
3835 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
3836 ast_unref(framenum);
3837 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3840 ast_type_adopt(thinkfunc, functype);
3842 if (!parser_next(parser)) {
3843 ast_unref(framenum);
3844 ast_delete(thinkfunc);
3848 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3850 nextthink = (ast_expression*)thinkfunc;
3853 nextthink = parse_expression_leave(parser, true, false, false);
3855 ast_unref(framenum);
3856 parseerror(parser, "expected a think-function in [frame,think] notation");
3861 if (!ast_istype(nextthink, ast_value)) {
3862 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3866 if (retval && parser->tok != ']') {
3867 parseerror(parser, "expected closing `]` for [frame,think] notation");
3871 if (retval && !parser_next(parser)) {
3875 if (retval && parser->tok != '{') {
3876 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3881 ast_unref(nextthink);
3882 ast_unref(framenum);
3886 has_frame_think = true;
3889 block = ast_block_new(parser_ctx(parser));
3891 parseerror(parser, "failed to allocate block");
3892 if (has_frame_think) {
3893 ast_unref(nextthink);
3894 ast_unref(framenum);
3899 if (has_frame_think) {
3901 ast_expression *self_frame;
3902 ast_expression *self_nextthink;
3903 ast_expression *self_think;
3904 ast_expression *time_plus_1;
3905 ast_store *store_frame;
3906 ast_store *store_nextthink;
3907 ast_store *store_think;
3909 ctx = parser_ctx(parser);
3910 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3911 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3912 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3914 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3915 gbl_time, (ast_expression*)fold_constgen_float(parser->fold, 0.1f));
3917 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3918 if (self_frame) ast_delete(self_frame);
3919 if (self_nextthink) ast_delete(self_nextthink);
3920 if (self_think) ast_delete(self_think);
3921 if (time_plus_1) ast_delete(time_plus_1);
3927 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3928 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3929 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3932 ast_delete(self_frame);
3935 if (!store_nextthink) {
3936 ast_delete(self_nextthink);
3940 ast_delete(self_think);
3944 if (store_frame) ast_delete(store_frame);
3945 if (store_nextthink) ast_delete(store_nextthink);
3946 if (store_think) ast_delete(store_think);
3949 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3950 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3951 !ast_block_add_expr(block, (ast_expression*)store_think))
3958 parseerror(parser, "failed to generate code for [frame,think]");
3959 ast_unref(nextthink);
3960 ast_unref(framenum);
3966 if (var->hasvalue) {
3967 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
3968 ast_block_delete(block);
3972 func = ast_function_new(ast_ctx(var), var->name, var);
3974 parseerror(parser, "failed to allocate function for `%s`", var->name);
3975 ast_block_delete(block);
3978 vec_push(parser->functions, func);
3980 parser_enterblock(parser);
3982 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3984 ast_value *param = var->expression.params[parami];
3987 if (param->expression.vtype != TYPE_VECTOR &&
3988 (param->expression.vtype != TYPE_FIELD ||
3989 param->expression.next->vtype != TYPE_VECTOR))
3994 if (!create_vector_members(param, me)) {
3995 ast_block_delete(block);
3999 for (e = 0; e < 3; ++e) {
4000 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4001 ast_block_collect(block, (ast_expression*)me[e]);
4005 if (var->argcounter) {
4006 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4007 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4011 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4013 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4014 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4015 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4016 varargs->expression.count = 0;
4017 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4018 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4019 ast_delete(varargs);
4020 ast_block_delete(block);
4023 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4024 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4025 ast_delete(varargs);
4026 ast_block_delete(block);
4029 func->varargs = varargs;
4030 func->fixedparams = (ast_value*)fold_constgen_float(parser->fold, vec_size(var->expression.params));
4033 parser->function = func;
4034 if (!parse_block_into(parser, block)) {
4035 ast_block_delete(block);
4039 vec_push(func->blocks, block);
4042 parser->function = old;
4043 if (!parser_leaveblock(parser))
4045 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4046 parseerror(parser, "internal error: local scopes left");
4050 if (parser->tok == ';')
4051 return parser_next(parser);
4052 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4053 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4057 (void)!parser_leaveblock(parser);
4058 vec_pop(parser->functions);
4059 ast_function_delete(func);
4060 var->constval.vfunc = NULL;
4063 parser->function = old;
4067 static ast_expression *array_accessor_split(
4072 ast_expression *left,
4073 ast_expression *right
4079 lex_ctx_t ctx = ast_ctx(array);
4081 if (!left || !right) {
4082 if (left) ast_delete(left);
4083 if (right) ast_delete(right);
4087 cmp = ast_binary_new(ctx, INSTR_LT,
4088 (ast_expression*)index,
4089 (ast_expression*)fold_constgen_float(parser->fold, middle));
4093 parseerror(parser, "internal error: failed to create comparison for array setter");
4097 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4099 ast_delete(cmp); /* will delete left and right */
4100 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4104 return (ast_expression*)ifthen;
4107 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4109 lex_ctx_t ctx = ast_ctx(array);
4111 if (from+1 == afterend) {
4112 /* set this value */
4115 ast_array_index *subscript;
4117 int assignop = type_store_instr[value->expression.vtype];
4119 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4120 assignop = INSTR_STORE_V;
4122 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4126 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4128 ast_delete(subscript);
4132 block = ast_block_new(ctx);
4138 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4143 ret = ast_return_new(ctx, NULL);
4149 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4154 return (ast_expression*)block;
4156 ast_expression *left, *right;
4157 size_t diff = afterend - from;
4158 size_t middle = from + diff/2;
4159 left = array_setter_node(parser, array, index, value, from, middle);
4160 right = array_setter_node(parser, array, index, value, middle, afterend);
4161 return array_accessor_split(parser, array, index, middle, left, right);
4165 static ast_expression *array_field_setter_node(
4174 lex_ctx_t ctx = ast_ctx(array);
4176 if (from+1 == afterend) {
4177 /* set this value */
4180 ast_entfield *entfield;
4181 ast_array_index *subscript;
4183 int assignop = type_storep_instr[value->expression.vtype];
4185 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4186 assignop = INSTR_STOREP_V;
4188 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4192 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4193 subscript->expression.vtype = TYPE_FIELD;
4195 entfield = ast_entfield_new_force(ctx,
4196 (ast_expression*)entity,
4197 (ast_expression*)subscript,
4198 (ast_expression*)subscript);
4200 ast_delete(subscript);
4204 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4206 ast_delete(entfield);
4210 block = ast_block_new(ctx);
4216 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4221 ret = ast_return_new(ctx, NULL);
4227 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4232 return (ast_expression*)block;
4234 ast_expression *left, *right;
4235 size_t diff = afterend - from;
4236 size_t middle = from + diff/2;
4237 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4238 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4239 return array_accessor_split(parser, array, index, middle, left, right);
4243 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4245 lex_ctx_t ctx = ast_ctx(array);
4247 if (from+1 == afterend) {
4249 ast_array_index *subscript;
4251 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4255 ret = ast_return_new(ctx, (ast_expression*)subscript);
4257 ast_delete(subscript);
4261 return (ast_expression*)ret;
4263 ast_expression *left, *right;
4264 size_t diff = afterend - from;
4265 size_t middle = from + diff/2;
4266 left = array_getter_node(parser, array, index, from, middle);
4267 right = array_getter_node(parser, array, index, middle, afterend);
4268 return array_accessor_split(parser, array, index, middle, left, right);
4272 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4274 ast_function *func = NULL;
4275 ast_value *fval = NULL;
4276 ast_block *body = NULL;
4278 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4280 parseerror(parser, "failed to create accessor function value");
4284 func = ast_function_new(ast_ctx(array), funcname, fval);
4287 parseerror(parser, "failed to create accessor function node");
4291 body = ast_block_new(ast_ctx(array));
4293 parseerror(parser, "failed to create block for array accessor");
4299 vec_push(func->blocks, body);
4302 vec_push(parser->accessors, fval);
4307 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4309 ast_value *index = NULL;
4310 ast_value *value = NULL;
4314 if (!ast_istype(array->expression.next, ast_value)) {
4315 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4319 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4321 func = fval->constval.vfunc;
4322 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4324 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4325 value = ast_value_copy((ast_value*)array->expression.next);
4327 if (!index || !value) {
4328 parseerror(parser, "failed to create locals for array accessor");
4331 (void)!ast_value_set_name(value, "value"); /* not important */
4332 vec_push(fval->expression.params, index);
4333 vec_push(fval->expression.params, value);
4335 array->setter = fval;
4338 if (index) ast_delete(index);
4339 if (value) ast_delete(value);
4345 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4347 ast_expression *root = NULL;
4348 root = array_setter_node(parser, array,
4349 array->setter->expression.params[0],
4350 array->setter->expression.params[1],
4351 0, array->expression.count);
4353 parseerror(parser, "failed to build accessor search tree");
4356 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4363 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4365 if (!parser_create_array_setter_proto(parser, array, funcname))
4367 return parser_create_array_setter_impl(parser, array);
4370 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4372 ast_expression *root = NULL;
4373 ast_value *entity = NULL;
4374 ast_value *index = NULL;
4375 ast_value *value = NULL;
4379 if (!ast_istype(array->expression.next, ast_value)) {
4380 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4384 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4386 func = fval->constval.vfunc;
4387 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4389 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4390 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4391 value = ast_value_copy((ast_value*)array->expression.next);
4392 if (!entity || !index || !value) {
4393 parseerror(parser, "failed to create locals for array accessor");
4396 (void)!ast_value_set_name(value, "value"); /* not important */
4397 vec_push(fval->expression.params, entity);
4398 vec_push(fval->expression.params, index);
4399 vec_push(fval->expression.params, value);
4401 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4403 parseerror(parser, "failed to build accessor search tree");
4407 array->setter = fval;
4408 return ast_block_add_expr(func->blocks[0], root);
4410 if (entity) ast_delete(entity);
4411 if (index) ast_delete(index);
4412 if (value) ast_delete(value);
4413 if (root) ast_delete(root);
4419 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4421 ast_value *index = NULL;
4425 /* NOTE: checking array->expression.next rather than elemtype since
4426 * for fields elemtype is a temporary fieldtype.
4428 if (!ast_istype(array->expression.next, ast_value)) {
4429 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4433 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4435 func = fval->constval.vfunc;
4436 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4438 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4441 parseerror(parser, "failed to create locals for array accessor");
4444 vec_push(fval->expression.params, index);
4446 array->getter = fval;
4449 if (index) ast_delete(index);
4455 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4457 ast_expression *root = NULL;
4459 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4461 parseerror(parser, "failed to build accessor search tree");
4464 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4471 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4473 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4475 return parser_create_array_getter_impl(parser, array);
4478 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4479 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4487 bool variadic = false;
4488 ast_value *varparam = NULL;
4489 char *argcounter = NULL;
4491 ctx = parser_ctx(parser);
4493 /* for the sake of less code we parse-in in this function */
4494 if (!parser_next(parser)) {
4496 parseerror(parser, "expected parameter list");
4502 /* parse variables until we hit a closing paren */
4503 while (parser->tok != ')') {
4505 /* there must be commas between them */
4506 if (parser->tok != ',') {
4507 parseerror(parser, "expected comma or end of parameter list");
4510 if (!parser_next(parser)) {
4511 parseerror(parser, "expected parameter");
4517 if (parser->tok == TOKEN_DOTS) {
4518 /* '...' indicates a varargs function */
4520 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4521 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4524 if (parser->tok == TOKEN_IDENT) {
4525 argcounter = util_strdup(parser_tokval(parser));
4526 if (!parser_next(parser) || parser->tok != ')') {
4527 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4534 /* for anything else just parse a typename */
4535 param = parse_typename(parser, NULL, NULL);
4538 vec_push(params, param);
4539 if (param->expression.vtype >= TYPE_VARIANT) {
4540 char tname[1024]; /* typename is reserved in C++ */
4541 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4542 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4545 /* type-restricted varargs */
4546 if (parser->tok == TOKEN_DOTS) {
4548 varparam = vec_last(params);
4550 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4551 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4554 if (parser->tok == TOKEN_IDENT) {
4555 argcounter = util_strdup(parser_tokval(parser));
4556 if (!parser_next(parser) || parser->tok != ')') {
4557 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4565 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4569 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4570 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4573 if (!parser_next(parser)) {
4574 parseerror(parser, "parse error after typename");
4578 /* now turn 'var' into a function type */
4579 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4580 fval->expression.next = (ast_expression*)var;
4582 fval->expression.flags |= AST_FLAG_VARIADIC;
4585 var->expression.params = params;
4586 var->expression.varparam = (ast_expression*)varparam;
4587 var->argcounter = argcounter;
4596 ast_delete(varparam);
4598 for (i = 0; i < vec_size(params); ++i)
4599 ast_delete(params[i]);
4604 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4606 ast_expression *cexp;
4607 ast_value *cval, *tmp;
4610 ctx = parser_ctx(parser);
4612 if (!parser_next(parser)) {
4614 parseerror(parser, "expected array-size");
4618 if (parser->tok != ']') {
4619 cexp = parse_expression_leave(parser, true, false, false);
4621 if (!cexp || !ast_istype(cexp, ast_value)) {
4625 parseerror(parser, "expected array-size as constant positive integer");
4628 cval = (ast_value*)cexp;
4635 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4636 tmp->expression.next = (ast_expression*)var;
4640 if (cval->expression.vtype == TYPE_INTEGER)
4641 tmp->expression.count = cval->constval.vint;
4642 else if (cval->expression.vtype == TYPE_FLOAT)
4643 tmp->expression.count = cval->constval.vfloat;
4647 parseerror(parser, "array-size must be a positive integer constant");
4653 var->expression.count = -1;
4654 var->expression.flags |= AST_FLAG_ARRAY_INIT;
4657 if (parser->tok != ']') {
4659 parseerror(parser, "expected ']' after array-size");
4662 if (!parser_next(parser)) {
4664 parseerror(parser, "error after parsing array size");
4670 /* Parse a complete typename.
4671 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4672 * but when parsing variables separated by comma
4673 * 'storebase' should point to where the base-type should be kept.
4674 * The base type makes up every bit of type information which comes *before* the
4677 * NOTE: The value must either be named, have a NULL name, or a name starting
4678 * with '<'. In the first case, this will be the actual variable or type
4679 * name, in the other cases it is assumed that the name will appear
4680 * later, and an error is generated otherwise.
4682 * The following will be parsed in its entirety:
4684 * The 'basetype' in this case is 'void()'
4685 * and if there's a comma after it, say:
4687 * then the type-information 'void()' can be stored in 'storebase'
4689 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4691 ast_value *var, *tmp;
4694 const char *name = NULL;
4695 bool isfield = false;
4696 bool wasarray = false;
4697 size_t morefields = 0;
4699 ctx = parser_ctx(parser);
4701 /* types may start with a dot */
4702 if (parser->tok == '.') {
4704 /* if we parsed a dot we need a typename now */
4705 if (!parser_next(parser)) {
4706 parseerror(parser, "expected typename for field definition");
4710 /* Further dots are handled seperately because they won't be part of the
4713 while (parser->tok == '.') {
4715 if (!parser_next(parser)) {
4716 parseerror(parser, "expected typename for field definition");
4721 if (parser->tok == TOKEN_IDENT)
4722 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4723 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4724 parseerror(parser, "expected typename");
4728 /* generate the basic type value */
4729 if (cached_typedef) {
4730 var = ast_value_copy(cached_typedef);
4731 ast_value_set_name(var, "<type(from_def)>");
4733 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4735 for (; morefields; --morefields) {
4736 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4737 tmp->expression.next = (ast_expression*)var;
4741 /* do not yet turn into a field - remember:
4742 * .void() foo; is a field too
4743 * .void()() foo; is a function
4747 if (!parser_next(parser)) {
4749 parseerror(parser, "parse error after typename");
4753 /* an opening paren now starts the parameter-list of a function
4754 * this is where original-QC has parameter lists.
4755 * We allow a single parameter list here.
4756 * Much like fteqcc we don't allow `float()() x`
4758 if (parser->tok == '(') {
4759 var = parse_parameter_list(parser, var);
4764 /* store the base if requested */
4766 *storebase = ast_value_copy(var);
4768 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4769 tmp->expression.next = (ast_expression*)*storebase;
4774 /* there may be a name now */
4775 if (parser->tok == TOKEN_IDENT) {
4776 name = util_strdup(parser_tokval(parser));
4778 if (!parser_next(parser)) {
4781 parseerror(parser, "error after variable or field declaration");
4786 /* now this may be an array */
4787 if (parser->tok == '[') {
4789 var = parse_arraysize(parser, var);
4791 if (name) mem_d(name);
4796 /* This is the point where we can turn it into a field */
4798 /* turn it into a field if desired */
4799 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4800 tmp->expression.next = (ast_expression*)var;
4804 /* now there may be function parens again */
4805 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4806 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4807 if (parser->tok == '(' && wasarray)
4808 parseerror(parser, "arrays as part of a return type is not supported");
4809 while (parser->tok == '(') {
4810 var = parse_parameter_list(parser, var);
4812 if (name) mem_d(name);
4817 /* finally name it */
4819 if (!ast_value_set_name(var, name)) {
4822 parseerror(parser, "internal error: failed to set name");
4825 /* free the name, ast_value_set_name duplicates */
4832 static bool parse_typedef(parser_t *parser)
4834 ast_value *typevar, *oldtype;
4835 ast_expression *old;
4837 typevar = parse_typename(parser, NULL, NULL);
4842 /* while parsing types, the ast_value's get named '<something>' */
4843 if (!typevar->name || typevar->name[0] == '<') {
4844 parseerror(parser, "missing name in typedef");
4845 ast_delete(typevar);
4849 if ( (old = parser_find_var(parser, typevar->name)) ) {
4850 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4851 " -> `%s` has been declared here: %s:%i",
4852 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4853 ast_delete(typevar);
4857 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4858 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4859 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4860 ast_delete(typevar);
4864 vec_push(parser->_typedefs, typevar);
4865 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4867 if (parser->tok != ';') {
4868 parseerror(parser, "expected semicolon after typedef");
4871 if (!parser_next(parser)) {
4872 parseerror(parser, "parse error after typedef");
4879 static const char *cvq_to_str(int cvq) {
4881 case CV_NONE: return "none";
4882 case CV_VAR: return "`var`";
4883 case CV_CONST: return "`const`";
4884 default: return "<INVALID>";
4888 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4891 if (proto->cvq != var->cvq) {
4892 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4893 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4894 parser->tok == '='))
4896 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4897 "`%s` declared with different qualifiers: %s\n"
4898 " -> previous declaration here: %s:%i uses %s",
4899 var->name, cvq_to_str(var->cvq),
4900 ast_ctx(proto).file, ast_ctx(proto).line,
4901 cvq_to_str(proto->cvq));
4904 av = (var ->expression.flags & AST_FLAG_NORETURN);
4905 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4907 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4908 "`%s` declared with different attributes%s\n"
4909 " -> previous declaration here: %s:%i",
4910 var->name, (av ? ": noreturn" : ""),
4911 ast_ctx(proto).file, ast_ctx(proto).line,
4912 (ao ? ": noreturn" : ""));
4917 static bool create_array_accessors(parser_t *parser, ast_value *var)
4920 util_snprintf(name, sizeof(name), "%s##SET", var->name);
4921 if (!parser_create_array_setter(parser, var, name))
4923 util_snprintf(name, sizeof(name), "%s##GET", var->name);
4924 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4929 static bool parse_array(parser_t *parser, ast_value *array)
4932 if (array->initlist) {
4933 parseerror(parser, "array already initialized elsewhere");
4936 if (!parser_next(parser)) {
4937 parseerror(parser, "parse error in array initializer");
4941 while (parser->tok != '}') {
4942 ast_value *v = (ast_value*)parse_expression_leave(parser, true, false, false);
4945 if (!ast_istype(v, ast_value) || !v->hasvalue || v->cvq != CV_CONST) {
4947 parseerror(parser, "initializing element must be a compile time constant");
4950 vec_push(array->initlist, v->constval);
4951 if (v->expression.vtype == TYPE_STRING) {
4952 array->initlist[i].vstring = util_strdupe(array->initlist[i].vstring);
4956 if (parser->tok == '}')
4958 if (parser->tok != ',' || !parser_next(parser)) {
4959 parseerror(parser, "expected comma or '}' in element list");
4963 if (!parser_next(parser) || parser->tok != ';') {
4964 parseerror(parser, "expected semicolon after initializer, got %s");
4968 if (!parser_next(parser)) {
4969 parseerror(parser, "parse error after initializer");
4974 if (array->expression.flags & AST_FLAG_ARRAY_INIT) {
4975 if (array->expression.count != (size_t)-1) {
4976 parseerror(parser, "array `%s' has already been initialized with %u elements",
4977 array->name, (unsigned)array->expression.count);
4979 array->expression.count = vec_size(array->initlist);
4980 if (!create_array_accessors(parser, array))
4986 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)
4990 ast_expression *old;
4994 ast_value *basetype = NULL;
4996 bool isparam = false;
4997 bool isvector = false;
4998 bool cleanvar = true;
4999 bool wasarray = false;
5001 ast_member *me[3] = { NULL, NULL, NULL };
5003 if (!localblock && is_static)
5004 parseerror(parser, "`static` qualifier is not supported in global scope");
5006 /* get the first complete variable */
5007 var = parse_typename(parser, &basetype, cached_typedef);
5010 ast_delete(basetype);
5014 /* while parsing types, the ast_value's get named '<something>' */
5015 if (!var->name || var->name[0] == '<') {
5016 parseerror(parser, "declaration does not declare anything");
5018 ast_delete(basetype);
5026 /* Part 0: finish the type */
5027 if (parser->tok == '(') {
5028 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5029 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5030 var = parse_parameter_list(parser, var);
5036 /* we only allow 1-dimensional arrays */
5037 if (parser->tok == '[') {
5039 var = parse_arraysize(parser, var);
5045 if (parser->tok == '(' && wasarray) {
5046 parseerror(parser, "arrays as part of a return type is not supported");
5047 /* we'll still parse the type completely for now */
5049 /* for functions returning functions */
5050 while (parser->tok == '(') {
5051 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5052 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5053 var = parse_parameter_list(parser, var);
5060 var->cvq = qualifier;
5061 var->expression.flags |= qflags;
5064 * store the vstring back to var for alias and
5065 * deprecation messages.
5067 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5068 var->expression.flags & AST_FLAG_ALIAS)
5069 var->desc = vstring;
5072 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5073 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5074 * is then filled with the previous definition and the parameter-names replaced.
5076 if (!strcmp(var->name, "nil")) {
5077 if (OPTS_FLAG(UNTYPED_NIL)) {
5078 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5079 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5081 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5084 /* Deal with end_sys_ vars */
5086 if (!strcmp(var->name, "end_sys_globals")) {
5088 parser->crc_globals = vec_size(parser->globals);
5091 else if (!strcmp(var->name, "end_sys_fields")) {
5093 parser->crc_fields = vec_size(parser->fields);
5096 if (was_end && var->expression.vtype == TYPE_FIELD) {
5097 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5098 "global '%s' hint should not be a field",
5099 parser_tokval(parser)))
5106 if (!nofields && var->expression.vtype == TYPE_FIELD)
5108 /* deal with field declarations */
5109 old = parser_find_field(parser, var->name);
5111 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5112 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5121 parseerror(parser, "field `%s` already declared here: %s:%i",
5122 var->name, ast_ctx(old).file, ast_ctx(old).line);
5127 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5128 (old = parser_find_global(parser, var->name)))
5130 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5131 parseerror(parser, "field `%s` already declared here: %s:%i",
5132 var->name, ast_ctx(old).file, ast_ctx(old).line);
5139 /* deal with other globals */
5140 old = parser_find_global(parser, var->name);
5141 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5143 /* This is a function which had a prototype */
5144 if (!ast_istype(old, ast_value)) {
5145 parseerror(parser, "internal error: prototype is not an ast_value");
5149 proto = (ast_value*)old;
5150 proto->desc = var->desc;
5151 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5152 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5154 ast_ctx(proto).file, ast_ctx(proto).line);
5158 /* we need the new parameter-names */
5159 for (i = 0; i < vec_size(proto->expression.params); ++i)
5160 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5161 if (!parser_check_qualifiers(parser, var, proto)) {
5168 proto->expression.flags |= var->expression.flags;
5176 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5177 "global `%s` already declared here: %s:%i",
5178 var->name, ast_ctx(old).file, ast_ctx(old).line))
5183 proto = (ast_value*)old;
5184 if (!ast_istype(old, ast_value)) {
5185 parseerror(parser, "internal error: not an ast_value");
5190 if (!parser_check_qualifiers(parser, var, proto)) {
5195 proto->expression.flags |= var->expression.flags;
5199 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5200 (old = parser_find_field(parser, var->name)))
5202 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5203 parseerror(parser, "global `%s` already declared here: %s:%i",
5204 var->name, ast_ctx(old).file, ast_ctx(old).line);
5211 else /* it's not a global */
5213 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5214 if (old && !isparam) {
5215 parseerror(parser, "local `%s` already declared here: %s:%i",
5216 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5220 old = parser_find_local(parser, var->name, 0, &isparam);
5221 if (old && isparam) {
5222 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5223 "local `%s` is shadowing a parameter", var->name))
5225 parseerror(parser, "local `%s` already declared here: %s:%i",
5226 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5230 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5232 if (ast_istype(old, ast_value))
5233 var = (ast_value*)old;
5242 /* in a noref section we simply bump the usecount */
5243 if (noref || parser->noref)
5247 * Create the global/local, and deal with vector types.
5250 if (var->expression.vtype == TYPE_VECTOR)
5252 else if (var->expression.vtype == TYPE_FIELD &&
5253 var->expression.next->vtype == TYPE_VECTOR)
5257 if (!create_vector_members(var, me)) {
5264 /* deal with global variables, fields, functions */
5265 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5266 var->isfield = true;
5267 vec_push(parser->fields, (ast_expression*)var);
5268 util_htset(parser->htfields, var->name, var);
5270 for (i = 0; i < 3; ++i) {
5271 vec_push(parser->fields, (ast_expression*)me[i]);
5272 util_htset(parser->htfields, me[i]->name, me[i]);
5277 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5278 parser_addglobal(parser, var->name, (ast_expression*)var);
5280 for (i = 0; i < 3; ++i) {
5281 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5285 ast_expression *find = parser_find_global(parser, var->desc);
5288 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5292 if (var->expression.vtype != find->vtype) {
5296 ast_type_to_string(find, ty1, sizeof(ty1));
5297 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5299 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5306 * add alias to aliases table and to corrector
5307 * so corrections can apply for aliases as well.
5309 util_htset(parser->aliases, var->name, find);
5312 * add to corrector so corrections can work
5313 * even for aliases too.
5316 vec_last(parser->correct_variables),
5317 &vec_last(parser->correct_variables_score),
5321 /* generate aliases for vector components */
5325 util_asprintf(&buffer[0], "%s_x", var->desc);
5326 util_asprintf(&buffer[1], "%s_y", var->desc);
5327 util_asprintf(&buffer[2], "%s_z", var->desc);
5329 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5330 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5331 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5338 * add to corrector so corrections can work
5339 * even for aliases too.
5342 vec_last(parser->correct_variables),
5343 &vec_last(parser->correct_variables_score),
5347 vec_last(parser->correct_variables),
5348 &vec_last(parser->correct_variables_score),
5352 vec_last(parser->correct_variables),
5353 &vec_last(parser->correct_variables_score),
5361 /* a static adds itself to be generated like any other global
5362 * but is added to the local namespace instead
5364 char *defname = NULL;
5365 size_t prefix_len, ln;
5367 ln = strlen(parser->function->name);
5368 vec_append(defname, ln, parser->function->name);
5370 vec_append(defname, 2, "::");
5371 /* remember the length up to here */
5372 prefix_len = vec_size(defname);
5374 /* Add it to the local scope */
5375 util_htset(vec_last(parser->variables), var->name, (void*)var);
5379 vec_last(parser->correct_variables),
5380 &vec_last(parser->correct_variables_score),
5384 /* now rename the global */
5385 ln = strlen(var->name);
5386 vec_append(defname, ln, var->name);
5387 ast_value_set_name(var, defname);
5389 /* push it to the to-be-generated globals */
5390 vec_push(parser->globals, (ast_expression*)var);
5392 /* same game for the vector members */
5394 for (i = 0; i < 3; ++i) {
5395 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5399 vec_last(parser->correct_variables),
5400 &vec_last(parser->correct_variables_score),
5404 vec_shrinkto(defname, prefix_len);
5405 ln = strlen(me[i]->name);
5406 vec_append(defname, ln, me[i]->name);
5407 ast_member_set_name(me[i], defname);
5409 vec_push(parser->globals, (ast_expression*)me[i]);
5414 vec_push(localblock->locals, var);
5415 parser_addlocal(parser, var->name, (ast_expression*)var);
5417 for (i = 0; i < 3; ++i) {
5418 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5419 ast_block_collect(localblock, (ast_expression*)me[i]);
5425 me[0] = me[1] = me[2] = NULL;
5430 if (var->expression.vtype == TYPE_ARRAY) {
5431 if (var->expression.count != (size_t)-1) {
5432 if (!create_array_accessors(parser, var))
5436 else if (!localblock && !nofields &&
5437 var->expression.vtype == TYPE_FIELD &&
5438 var->expression.next->vtype == TYPE_ARRAY)
5441 ast_expression *telem;
5443 ast_value *array = (ast_value*)var->expression.next;
5445 if (!ast_istype(var->expression.next, ast_value)) {
5446 parseerror(parser, "internal error: field element type must be an ast_value");
5450 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5451 if (!parser_create_array_field_setter(parser, array, name))
5454 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5455 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5456 tfield->expression.next = telem;
5457 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5458 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5466 if (parser->tok == ';') {
5467 ast_delete(basetype);
5468 if (!parser_next(parser)) {
5469 parseerror(parser, "error after variable declaration");
5475 if (parser->tok == ',')
5479 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5482 parseerror(parser, "missing comma or semicolon while parsing variables");
5486 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5487 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5488 "initializing expression turns variable `%s` into a constant in this standard",
5495 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5496 if (parser->tok != '=') {
5497 if (!strcmp(parser_tokval(parser), "break")) {
5498 if (!parser_next(parser)) {
5499 parseerror(parser, "error parsing break definition");
5502 (void)!parsewarning(parser, WARN_BREAKDEF, "break definition ignored (suggest removing it)");
5504 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5509 if (!parser_next(parser)) {
5510 parseerror(parser, "error parsing initializer");
5514 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5515 parseerror(parser, "expected '=' before function body in this standard");
5518 if (parser->tok == '#') {
5519 ast_function *func = NULL;
5520 ast_value *number = NULL;
5526 parseerror(parser, "cannot declare builtins within functions");
5529 if (var->expression.vtype != TYPE_FUNCTION) {
5530 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5533 if (!parser_next(parser)) {
5534 parseerror(parser, "expected builtin number");
5538 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5539 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5541 parseerror(parser, "builtin number expected");
5544 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5547 parseerror(parser, "builtin number must be a compile time constant");
5550 if (number->expression.vtype == TYPE_INTEGER)
5551 builtin_num = number->constval.vint;
5552 else if (number->expression.vtype == TYPE_FLOAT)
5553 builtin_num = number->constval.vfloat;
5556 parseerror(parser, "builtin number must be an integer constant");
5561 fractional = modff(builtin_num, &integral);
5562 if (builtin_num < 0 || fractional != 0) {
5563 parseerror(parser, "builtin number must be an integer greater than zero");
5567 /* we only want the integral part anyways */
5568 builtin_num = integral;
5569 } else if (parser->tok == TOKEN_INTCONST) {
5570 builtin_num = parser_token(parser)->constval.i;
5572 parseerror(parser, "builtin number must be a compile time constant");
5576 if (var->hasvalue) {
5577 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5578 "builtin `%s` has already been defined\n"
5579 " -> previous declaration here: %s:%i",
5580 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5584 func = ast_function_new(ast_ctx(var), var->name, var);
5586 parseerror(parser, "failed to allocate function for `%s`", var->name);
5589 vec_push(parser->functions, func);
5591 func->builtin = -builtin_num-1;
5594 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5595 ? (parser->tok != ',' && parser->tok != ';')
5596 : (!parser_next(parser)))
5598 parseerror(parser, "expected comma or semicolon");
5600 ast_function_delete(func);
5601 var->constval.vfunc = NULL;
5605 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
5608 /* Note that fteqcc and most others don't even *have*
5609 * local arrays, so this is not a high priority.
5611 parseerror(parser, "TODO: initializers for local arrays");
5615 var->hasvalue = true;
5616 if (!parse_array(parser, var))
5619 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
5622 parseerror(parser, "cannot declare functions within functions");
5627 ast_ctx(proto) = parser_ctx(parser);
5629 if (!parse_function_body(parser, var))
5631 ast_delete(basetype);
5632 for (i = 0; i < vec_size(parser->gotos); ++i)
5633 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5634 vec_free(parser->gotos);
5635 vec_free(parser->labels);
5638 ast_expression *cexp;
5641 cexp = parse_expression_leave(parser, true, false, false);
5646 cval = (ast_value*)cexp;
5647 if (cval != parser->nil &&
5648 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5651 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5655 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5656 qualifier != CV_VAR)
5658 var->cvq = CV_CONST;
5660 if (cval == parser->nil)
5661 var->expression.flags |= AST_FLAG_INITIALIZED;
5664 var->hasvalue = true;
5665 if (cval->expression.vtype == TYPE_STRING)
5666 var->constval.vstring = parser_strdup(cval->constval.vstring);
5667 else if (cval->expression.vtype == TYPE_FIELD)
5668 var->constval.vfield = cval;
5670 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5676 shunt sy = { NULL, NULL, NULL, NULL };
5679 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5680 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5681 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5682 if (!parser_sy_apply_operator(parser, &sy))
5685 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5686 parseerror(parser, "internal error: leaked operands");
5687 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5698 if (parser->tok == ',') {
5699 if (!parser_next(parser)) {
5700 parseerror(parser, "expected another variable");
5704 if (parser->tok != TOKEN_IDENT) {
5705 parseerror(parser, "expected another variable");
5708 var = ast_value_copy(basetype);
5710 ast_value_set_name(var, parser_tokval(parser));
5711 if (!parser_next(parser)) {
5712 parseerror(parser, "error parsing variable declaration");
5718 if (parser->tok != ';') {
5719 parseerror(parser, "missing semicolon after variables");
5723 if (!parser_next(parser)) {
5724 parseerror(parser, "parse error after variable declaration");
5728 ast_delete(basetype);
5732 if (cleanvar && var)
5734 ast_delete(basetype);
5738 ast_delete(basetype);
5739 if (cleanvar && var)
5741 if (me[0]) ast_member_delete(me[0]);
5742 if (me[1]) ast_member_delete(me[1]);
5743 if (me[2]) ast_member_delete(me[2]);
5747 static bool parser_global_statement(parser_t *parser)
5751 bool is_static = false;
5752 uint32_t qflags = 0;
5753 ast_value *istype = NULL;
5754 char *vstring = NULL;
5756 if (parser->tok == TOKEN_IDENT)
5757 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5759 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5761 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5763 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5765 if (cvq == CV_WRONG)
5767 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5769 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5771 return parse_enum(parser);
5773 else if (parser->tok == TOKEN_KEYWORD)
5775 if (!strcmp(parser_tokval(parser), "typedef")) {
5776 if (!parser_next(parser)) {
5777 parseerror(parser, "expected type definition after 'typedef'");
5780 return parse_typedef(parser);
5782 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5785 else if (parser->tok == '#')
5787 return parse_pragma(parser);
5789 else if (parser->tok == '$')
5791 if (!parser_next(parser)) {
5792 parseerror(parser, "parse error");
5798 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
5804 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5806 return util_crc16(old, str, strlen(str));
5809 static void progdefs_crc_file(const char *str)
5811 /* write to progdefs.h here */
5815 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5817 old = progdefs_crc_sum(old, str);
5818 progdefs_crc_file(str);
5822 static void generate_checksum(parser_t *parser, ir_builder *ir)
5824 uint16_t crc = 0xFFFF;
5828 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5829 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5831 progdefs_crc_file("\tint\tpad;\n");
5832 progdefs_crc_file("\tint\tofs_return[3];\n");
5833 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5834 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5835 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5836 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5837 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5838 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5839 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5840 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5842 for (i = 0; i < parser->crc_globals; ++i) {
5843 if (!ast_istype(parser->globals[i], ast_value))
5845 value = (ast_value*)(parser->globals[i]);
5846 switch (value->expression.vtype) {
5847 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5848 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5849 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5850 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5852 crc = progdefs_crc_both(crc, "\tint\t");
5855 crc = progdefs_crc_both(crc, value->name);
5856 crc = progdefs_crc_both(crc, ";\n");
5858 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5859 for (i = 0; i < parser->crc_fields; ++i) {
5860 if (!ast_istype(parser->fields[i], ast_value))
5862 value = (ast_value*)(parser->fields[i]);
5863 switch (value->expression.next->vtype) {
5864 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5865 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5866 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5867 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5869 crc = progdefs_crc_both(crc, "\tint\t");
5872 crc = progdefs_crc_both(crc, value->name);
5873 crc = progdefs_crc_both(crc, ";\n");
5875 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5876 ir->code->crc = crc;
5879 parser_t *parser_create()
5882 lex_ctx_t empty_ctx;
5885 parser = (parser_t*)mem_a(sizeof(parser_t));
5889 memset(parser, 0, sizeof(*parser));
5891 for (i = 0; i < operator_count; ++i) {
5892 if (operators[i].id == opid1('=')) {
5893 parser->assign_op = operators+i;
5897 if (!parser->assign_op) {
5898 printf("internal error: initializing parser: failed to find assign operator\n");
5903 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5904 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5905 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5906 vec_push(parser->_blocktypedefs, 0);
5908 parser->aliases = util_htnew(PARSER_HT_SIZE);
5911 vec_push(parser->correct_variables, correct_trie_new());
5912 vec_push(parser->correct_variables_score, NULL);
5914 empty_ctx.file = "<internal>";
5916 empty_ctx.column = 0;
5917 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
5918 parser->nil->cvq = CV_CONST;
5919 if (OPTS_FLAG(UNTYPED_NIL))
5920 util_htset(parser->htglobals, "nil", (void*)parser->nil);
5922 parser->max_param_count = 1;
5924 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
5925 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
5926 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
5928 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
5929 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
5930 parser->reserved_version->cvq = CV_CONST;
5931 parser->reserved_version->hasvalue = true;
5932 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
5933 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
5935 parser->reserved_version = NULL;
5938 parser->fold = fold_init (parser);
5939 parser->intrin = intrin_init(parser);
5943 static bool parser_compile(parser_t *parser)
5945 /* initial lexer/parser state */
5946 parser->lex->flags.noops = true;
5948 if (parser_next(parser))
5950 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
5952 if (!parser_global_statement(parser)) {
5953 if (parser->tok == TOKEN_EOF)
5954 parseerror(parser, "unexpected end of file");
5955 else if (compile_errors)
5956 parseerror(parser, "there have been errors, bailing out");
5957 lex_close(parser->lex);
5963 parseerror(parser, "parse error");
5964 lex_close(parser->lex);
5969 lex_close(parser->lex);
5972 return !compile_errors;
5975 bool parser_compile_file(parser_t *parser, const char *filename)
5977 parser->lex = lex_open(filename);
5979 con_err("failed to open file \"%s\"\n", filename);
5982 return parser_compile(parser);
5985 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
5987 parser->lex = lex_open_string(str, len, name);
5989 con_err("failed to create lexer for string \"%s\"\n", name);
5992 return parser_compile(parser);
5995 static void parser_remove_ast(parser_t *parser)
5998 if (parser->ast_cleaned)
6000 parser->ast_cleaned = true;
6001 for (i = 0; i < vec_size(parser->accessors); ++i) {
6002 ast_delete(parser->accessors[i]->constval.vfunc);
6003 parser->accessors[i]->constval.vfunc = NULL;
6004 ast_delete(parser->accessors[i]);
6006 for (i = 0; i < vec_size(parser->functions); ++i) {
6007 ast_delete(parser->functions[i]);
6009 for (i = 0; i < vec_size(parser->fields); ++i) {
6010 ast_delete(parser->fields[i]);
6012 for (i = 0; i < vec_size(parser->globals); ++i) {
6013 ast_delete(parser->globals[i]);
6015 vec_free(parser->accessors);
6016 vec_free(parser->functions);
6017 vec_free(parser->globals);
6018 vec_free(parser->fields);
6020 for (i = 0; i < vec_size(parser->variables); ++i)
6021 util_htdel(parser->variables[i]);
6022 vec_free(parser->variables);
6023 vec_free(parser->_blocklocals);
6024 vec_free(parser->_locals);
6027 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
6028 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
6030 vec_free(parser->correct_variables);
6031 vec_free(parser->correct_variables_score);
6033 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6034 ast_delete(parser->_typedefs[i]);
6035 vec_free(parser->_typedefs);
6036 for (i = 0; i < vec_size(parser->typedefs); ++i)
6037 util_htdel(parser->typedefs[i]);
6038 vec_free(parser->typedefs);
6039 vec_free(parser->_blocktypedefs);
6041 vec_free(parser->_block_ctx);
6043 vec_free(parser->labels);
6044 vec_free(parser->gotos);
6045 vec_free(parser->breaks);
6046 vec_free(parser->continues);
6048 ast_value_delete(parser->nil);
6050 ast_value_delete(parser->const_vec[0]);
6051 ast_value_delete(parser->const_vec[1]);
6052 ast_value_delete(parser->const_vec[2]);
6054 if (parser->reserved_version)
6055 ast_value_delete(parser->reserved_version);
6057 util_htdel(parser->aliases);
6058 fold_cleanup(parser->fold);
6059 intrin_cleanup(parser->intrin);
6062 void parser_cleanup(parser_t *parser)
6064 parser_remove_ast(parser);
6068 bool parser_finish(parser_t *parser, const char *output)
6074 if (compile_errors) {
6075 con_out("*** there were compile errors\n");
6079 ir = ir_builder_new("gmqcc_out");
6081 con_out("failed to allocate builder\n");
6085 for (i = 0; i < vec_size(parser->fields); ++i) {
6088 if (!ast_istype(parser->fields[i], ast_value))
6090 field = (ast_value*)parser->fields[i];
6091 hasvalue = field->hasvalue;
6092 field->hasvalue = false;
6093 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6094 con_out("failed to generate field %s\n", field->name);
6095 ir_builder_delete(ir);
6100 ast_expression *subtype;
6101 field->hasvalue = true;
6102 subtype = field->expression.next;
6103 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6104 if (subtype->vtype == TYPE_FIELD)
6105 ifld->fieldtype = subtype->next->vtype;
6106 else if (subtype->vtype == TYPE_FUNCTION)
6107 ifld->outtype = subtype->next->vtype;
6108 (void)!ir_value_set_field(field->ir_v, ifld);
6111 for (i = 0; i < vec_size(parser->globals); ++i) {
6113 if (!ast_istype(parser->globals[i], ast_value))
6115 asvalue = (ast_value*)(parser->globals[i]);
6116 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6117 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6118 "unused global: `%s`", asvalue->name);
6120 if (!ast_global_codegen(asvalue, ir, false)) {
6121 con_out("failed to generate global %s\n", asvalue->name);
6122 ir_builder_delete(ir);
6126 /* Build function vararg accessor ast tree now before generating
6127 * immediates, because the accessors may add new immediates
6129 for (i = 0; i < vec_size(parser->functions); ++i) {
6130 ast_function *f = parser->functions[i];
6132 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6133 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6134 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6135 con_out("failed to generate vararg setter for %s\n", f->name);
6136 ir_builder_delete(ir);
6139 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6140 con_out("failed to generate vararg getter for %s\n", f->name);
6141 ir_builder_delete(ir);
6145 ast_delete(f->varargs);
6150 /* Now we can generate immediates */
6151 if (!fold_generate(parser->fold, ir))
6154 for (i = 0; i < vec_size(parser->globals); ++i) {
6156 if (!ast_istype(parser->globals[i], ast_value))
6158 asvalue = (ast_value*)(parser->globals[i]);
6159 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6161 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6162 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6163 "uninitialized constant: `%s`",
6165 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6166 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6167 "uninitialized global: `%s`",
6170 if (!ast_generate_accessors(asvalue, ir)) {
6171 ir_builder_delete(ir);
6175 for (i = 0; i < vec_size(parser->fields); ++i) {
6177 asvalue = (ast_value*)(parser->fields[i]->next);
6179 if (!ast_istype((ast_expression*)asvalue, ast_value))
6181 if (asvalue->expression.vtype != TYPE_ARRAY)
6183 if (!ast_generate_accessors(asvalue, ir)) {
6184 ir_builder_delete(ir);
6188 if (parser->reserved_version &&
6189 !ast_global_codegen(parser->reserved_version, ir, false))
6191 con_out("failed to generate reserved::version");
6192 ir_builder_delete(ir);
6195 for (i = 0; i < vec_size(parser->functions); ++i) {
6196 ast_function *f = parser->functions[i];
6197 if (!ast_function_codegen(f, ir)) {
6198 con_out("failed to generate function %s\n", f->name);
6199 ir_builder_delete(ir);
6204 generate_checksum(parser, ir);
6206 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6207 ir_builder_dump(ir, con_out);
6208 for (i = 0; i < vec_size(parser->functions); ++i) {
6209 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6210 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6211 ir_builder_delete(ir);
6215 parser_remove_ast(parser);
6217 if (compile_Werrors) {
6218 con_out("*** there were warnings treated as errors\n");
6219 compile_show_werrors();
6224 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6225 ir_builder_dump(ir, con_out);
6227 if (!ir_builder_generate(ir, output)) {
6228 con_out("*** failed to generate output file\n");
6229 ir_builder_delete(ir);
6233 ir_builder_delete(ir);