2 * Copyright (C) 2012, 2013
6 * Permission is hereby granted, free of charge, to any person obtaining a copy of
7 * this software and associated documentation files (the "Software"), to deal in
8 * the Software without restriction, including without limitation the rights to
9 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
10 * of the Software, and to permit persons to whom the Software is furnished to do
11 * so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 #define PARSER_HT_LOCALS 2
30 #define PARSER_HT_SIZE 512
31 #define TYPEDEF_HT_SIZE 512
33 static void parser_enterblock(parser_t *parser);
34 static bool parser_leaveblock(parser_t *parser);
35 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
36 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
37 static bool parse_typedef(parser_t *parser);
38 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool is_static, uint32_t qflags, char *vstring);
39 static ast_block* parse_block(parser_t *parser);
40 static bool parse_block_into(parser_t *parser, ast_block *block);
41 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
42 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
43 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
44 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
45 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname);
46 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname);
47 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef, bool *is_vararg);
49 static void parseerror(parser_t *parser, const char *fmt, ...)
53 vcompile_error(parser->lex->tok.ctx, fmt, ap);
57 /* returns true if it counts as an error */
58 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
63 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
68 /**********************************************************************
72 static bool parser_next(parser_t *parser)
74 /* lex_do kills the previous token */
75 parser->tok = lex_do(parser->lex);
76 if (parser->tok == TOKEN_EOF)
78 if (parser->tok >= TOKEN_ERROR) {
79 parseerror(parser, "lex error");
85 #define parser_tokval(p) ((p)->lex->tok.value)
86 #define parser_token(p) (&((p)->lex->tok))
88 char *parser_strdup(const char *str)
91 /* actually dup empty strings */
92 char *out = (char*)mem_a(1);
96 return util_strdup(str);
99 static ast_expression* parser_find_field(parser_t *parser, const char *name)
101 return ( ast_expression*)util_htget(parser->htfields, name);
104 static ast_expression* parser_find_label(parser_t *parser, const char *name)
107 for(i = 0; i < vec_size(parser->labels); i++)
108 if (!strcmp(parser->labels[i]->name, name))
109 return (ast_expression*)parser->labels[i];
113 ast_expression* parser_find_global(parser_t *parser, const char *name)
115 ast_expression *var = (ast_expression*)util_htget(parser->aliases, parser_tokval(parser));
118 return (ast_expression*)util_htget(parser->htglobals, name);
121 static ast_expression* parser_find_param(parser_t *parser, const char *name)
125 if (!parser->function)
127 fun = parser->function->vtype;
128 for (i = 0; i < vec_size(fun->expression.params); ++i) {
129 if (!strcmp(fun->expression.params[i]->name, name))
130 return (ast_expression*)(fun->expression.params[i]);
135 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
140 hash = util_hthash(parser->htglobals, name);
143 for (i = vec_size(parser->variables); i > upto;) {
145 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
149 return parser_find_param(parser, name);
152 static ast_expression* parser_find_var(parser_t *parser, const char *name)
156 v = parser_find_local(parser, name, 0, &dummy);
157 if (!v) v = parser_find_global(parser, name);
161 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
165 hash = util_hthash(parser->typedefs[0], name);
167 for (i = vec_size(parser->typedefs); i > upto;) {
169 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
177 size_t etype; /* 0 = expression, others are operators */
181 ast_block *block; /* for commas and function calls */
200 static sy_elem syexp(lex_ctx_t ctx, ast_expression *v) {
211 static sy_elem syblock(lex_ctx_t ctx, ast_block *v) {
215 e.out = (ast_expression*)v;
222 static sy_elem syop(lex_ctx_t ctx, const oper_info *op) {
224 e.etype = 1 + (op - operators);
233 static sy_elem syparen(lex_ctx_t ctx, size_t off) {
244 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
245 * so we need to rotate it to become ent.(foo[n]).
247 static bool rotate_entfield_array_index_nodes(ast_expression **out)
249 ast_array_index *index, *oldindex;
250 ast_entfield *entfield;
254 ast_expression *entity;
256 lex_ctx_t ctx = ast_ctx(*out);
258 if (!ast_istype(*out, ast_array_index))
260 index = (ast_array_index*)*out;
262 if (!ast_istype(index->array, ast_entfield))
264 entfield = (ast_entfield*)index->array;
266 if (!ast_istype(entfield->field, ast_value))
268 field = (ast_value*)entfield->field;
271 entity = entfield->entity;
275 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
276 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
277 *out = (ast_expression*)entfield;
279 oldindex->array = NULL;
280 oldindex->index = NULL;
281 ast_delete(oldindex);
286 static bool check_write_to(lex_ctx_t ctx, ast_expression *expr)
288 if (ast_istype(expr, ast_value)) {
289 ast_value *val = (ast_value*)expr;
290 if (val->cvq == CV_CONST) {
291 if (val->name[0] == '#') {
292 compile_error(ctx, "invalid assignment to a literal constant");
296 * To work around quakeworld we must elide the error and make it
299 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_QCC)
300 compile_error(ctx, "assignment to constant `%s`", val->name);
302 (void)!compile_warning(ctx, WARN_CONST_OVERWRITE, "assignment to constant `%s`", val->name);
309 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
313 ast_expression *out = NULL;
314 ast_expression *exprs[3];
315 ast_block *blocks[3];
316 ast_binstore *asbinstore;
317 size_t i, assignop, addop, subop;
318 qcint_t generated_op = 0;
323 if (!vec_size(sy->ops)) {
324 parseerror(parser, "internal error: missing operator");
328 if (vec_last(sy->ops).isparen) {
329 parseerror(parser, "unmatched parenthesis");
333 op = &operators[vec_last(sy->ops).etype - 1];
334 ctx = vec_last(sy->ops).ctx;
336 if (vec_size(sy->out) < op->operands) {
337 if (op->flags & OP_PREFIX)
338 compile_error(ctx, "expected expression after unary operator `%s`", op->op, (int)op->id);
339 else /* this should have errored previously already */
340 compile_error(ctx, "expected expression after operator `%s`", op->op, (int)op->id);
344 vec_shrinkby(sy->ops, 1);
346 /* op(:?) has no input and no output */
350 vec_shrinkby(sy->out, op->operands);
351 for (i = 0; i < op->operands; ++i) {
352 exprs[i] = sy->out[vec_size(sy->out)+i].out;
353 blocks[i] = sy->out[vec_size(sy->out)+i].block;
355 if (exprs[i]->vtype == TYPE_NOEXPR &&
356 !(i != 0 && op->id == opid2('?',':')) &&
357 !(i == 1 && op->id == opid1('.')))
359 if (ast_istype(exprs[i], ast_label))
360 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
362 compile_error(ast_ctx(exprs[i]), "not an expression");
363 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
367 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
368 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
372 #define NotSameType(T) \
373 (exprs[0]->vtype != exprs[1]->vtype || \
374 exprs[0]->vtype != T)
379 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
383 if (exprs[0]->vtype == TYPE_VECTOR &&
384 exprs[1]->vtype == TYPE_NOEXPR)
386 if (exprs[1] == (ast_expression*)parser->const_vec[0])
387 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
388 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
389 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
390 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
391 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
393 compile_error(ctx, "access to invalid vector component");
397 else if (exprs[0]->vtype == TYPE_ENTITY) {
398 if (exprs[1]->vtype != TYPE_FIELD) {
399 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
402 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
404 else if (exprs[0]->vtype == TYPE_VECTOR) {
405 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
409 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
415 if (exprs[0]->vtype != TYPE_ARRAY &&
416 !(exprs[0]->vtype == TYPE_FIELD &&
417 exprs[0]->next->vtype == TYPE_ARRAY))
419 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
420 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
423 if (exprs[1]->vtype != TYPE_FLOAT) {
424 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
425 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
428 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
429 if (rotate_entfield_array_index_nodes(&out))
432 /* This is not broken in fteqcc anymore */
433 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
434 /* this error doesn't need to make us bail out */
435 (void)!parsewarning(parser, WARN_EXTENSIONS,
436 "accessing array-field members of an entity without parenthesis\n"
437 " -> this is an extension from -std=gmqcc");
444 if (vec_size(sy->paren) && vec_last(sy->paren) == PAREN_FUNC) {
445 vec_push(sy->out, syexp(ctx, exprs[0]));
446 vec_push(sy->out, syexp(ctx, exprs[1]));
447 vec_last(sy->argc)++;
451 if (!ast_block_add_expr(blocks[0], exprs[1]))
454 blocks[0] = ast_block_new(ctx);
455 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
456 !ast_block_add_expr(blocks[0], exprs[1]))
461 ast_block_set_type(blocks[0], exprs[1]);
463 vec_push(sy->out, syblock(ctx, blocks[0]));
470 if ((out = fold_op(parser->fold, op, exprs)))
473 if (exprs[0]->vtype != TYPE_FLOAT &&
474 exprs[0]->vtype != TYPE_VECTOR) {
475 compile_error(ctx, "invalid types used in unary expression: cannot negate type %s",
476 type_name[exprs[0]->vtype]);
479 out = (ast_expression*)ast_unary_new(ctx, (VINSTR_NEG_F-TYPE_FLOAT) + exprs[0]->vtype, exprs[0]);
483 if (!(out = fold_op(parser->fold, op, exprs))) {
484 switch (exprs[0]->vtype) {
486 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
489 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
492 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
493 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
495 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
497 /* we don't constant-fold NOT for these types */
499 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
502 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
505 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
506 type_name[exprs[0]->vtype]);
513 if (exprs[0]->vtype != exprs[1]->vtype ||
514 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
516 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
517 type_name[exprs[0]->vtype],
518 type_name[exprs[1]->vtype]);
521 if (!(out = fold_op(parser->fold, op, exprs))) {
522 switch (exprs[0]->vtype) {
524 out = fold_binary(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
527 out = fold_binary(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
530 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
531 type_name[exprs[0]->vtype],
532 type_name[exprs[1]->vtype]);
538 if (exprs[0]->vtype != exprs[1]->vtype ||
539 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT))
541 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
542 type_name[exprs[1]->vtype],
543 type_name[exprs[0]->vtype]);
546 if (!(out = fold_op(parser->fold, op, exprs))) {
547 switch (exprs[0]->vtype) {
549 out = fold_binary(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
552 out = fold_binary(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
555 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
556 type_name[exprs[1]->vtype],
557 type_name[exprs[0]->vtype]);
563 if (exprs[0]->vtype != exprs[1]->vtype &&
564 !(exprs[0]->vtype == TYPE_VECTOR &&
565 exprs[1]->vtype == TYPE_FLOAT) &&
566 !(exprs[1]->vtype == TYPE_VECTOR &&
567 exprs[0]->vtype == TYPE_FLOAT)
570 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
571 type_name[exprs[1]->vtype],
572 type_name[exprs[0]->vtype]);
575 if (!(out = fold_op(parser->fold, op, exprs))) {
576 switch (exprs[0]->vtype) {
578 if (exprs[1]->vtype == TYPE_VECTOR)
579 out = fold_binary(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
581 out = fold_binary(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
584 if (exprs[1]->vtype == TYPE_FLOAT)
585 out = fold_binary(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
587 out = fold_binary(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
590 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
591 type_name[exprs[1]->vtype],
592 type_name[exprs[0]->vtype]);
599 if (exprs[1]->vtype != TYPE_FLOAT) {
600 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
601 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
602 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
605 if (!(out = fold_op(parser->fold, op, exprs))) {
606 if (exprs[0]->vtype == TYPE_FLOAT)
607 out = fold_binary(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
609 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
610 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
611 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
618 if (NotSameType(TYPE_FLOAT)) {
619 compile_error(ctx, "invalid types used in expression: cannot perform modulo operation between types %s and %s",
620 type_name[exprs[0]->vtype],
621 type_name[exprs[1]->vtype]);
623 } else if (!(out = fold_op(parser->fold, op, exprs))) {
624 /* generate a call to __builtin_mod */
625 ast_expression *mod = intrin_func(parser->intrin, "mod");
626 ast_call *call = NULL;
627 if (!mod) return false; /* can return null for missing floor */
629 call = ast_call_new(parser_ctx(parser), mod);
630 vec_push(call->params, exprs[0]);
631 vec_push(call->params, exprs[1]);
633 out = (ast_expression*)call;
638 compile_error(ctx, "%= is unimplemented");
644 if ( !(exprs[0]->vtype == TYPE_FLOAT && exprs[1]->vtype == TYPE_FLOAT) &&
645 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_FLOAT) &&
646 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_VECTOR))
648 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
649 type_name[exprs[0]->vtype],
650 type_name[exprs[1]->vtype]);
654 if (!(out = fold_op(parser->fold, op, exprs))) {
656 * IF the first expression is float, the following will be too
657 * since scalar ^ vector is not allowed.
659 if (exprs[0]->vtype == TYPE_FLOAT) {
660 out = fold_binary(ctx,
661 (op->id == opid1('^') ? VINSTR_BITXOR : op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
665 * The first is a vector: vector is allowed to bitop with vector and
666 * with scalar, branch here for the second operand.
668 if (exprs[1]->vtype == TYPE_VECTOR) {
670 * Bitop all the values of the vector components against the
671 * vectors components in question.
673 out = fold_binary(ctx,
674 (op->id == opid1('^') ? VINSTR_BITXOR_V : op->id == opid1('|') ? VINSTR_BITOR_V : VINSTR_BITAND_V),
677 out = fold_binary(ctx,
678 (op->id == opid1('^') ? VINSTR_BITXOR_VF : op->id == opid1('|') ? VINSTR_BITOR_VF : VINSTR_BITAND_VF),
687 case opid3('<','<','='):
688 case opid3('>','>','='):
689 if(!(out = fold_op(parser->fold, op, exprs))) {
690 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
696 generated_op += 1; /* INSTR_OR */
699 generated_op += INSTR_AND;
700 if (!(out = fold_op(parser->fold, op, exprs))) {
701 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
702 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
703 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
704 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
707 for (i = 0; i < 2; ++i) {
708 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->vtype == TYPE_VECTOR) {
709 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
711 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
713 exprs[i] = out; out = NULL;
714 if (OPTS_FLAG(PERL_LOGIC)) {
715 /* here we want to keep the right expressions' type */
719 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->vtype == TYPE_STRING) {
720 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
722 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
724 exprs[i] = out; out = NULL;
725 if (OPTS_FLAG(PERL_LOGIC)) {
726 /* here we want to keep the right expressions' type */
731 out = fold_binary(ctx, generated_op, exprs[0], exprs[1]);
736 if (vec_last(sy->paren) != PAREN_TERNARY2) {
737 compile_error(ctx, "mismatched parenthesis/ternary");
741 if (!ast_compare_type(exprs[1], exprs[2])) {
742 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
743 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
744 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
747 if (!(out = fold_op(parser->fold, op, exprs)))
748 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
751 case opid2('*', '*'):
752 if (NotSameType(TYPE_FLOAT)) {
753 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
754 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
755 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
760 if (!(out = fold_op(parser->fold, op, exprs))) {
761 ast_call *gencall = ast_call_new(parser_ctx(parser), intrin_func(parser->intrin, "pow"));
762 vec_push(gencall->params, exprs[0]);
763 vec_push(gencall->params, exprs[1]);
764 out = (ast_expression*)gencall;
768 case opid2('>', '<'):
769 if (NotSameType(TYPE_VECTOR)) {
770 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
771 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
772 compile_error(ctx, "invalid types used in cross product: %s and %s",
777 if (!(out = fold_op(parser->fold, op, exprs))) {
788 case opid3('<','=','>'): /* -1, 0, or 1 */
789 if (NotSameType(TYPE_FLOAT)) {
790 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
791 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
792 compile_error(ctx, "invalid types used in comparision: %s and %s",
798 if (!(out = fold_op(parser->fold, op, exprs))) {
799 /* This whole block is NOT fold_binary safe */
800 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
802 eq->refs = AST_REF_NONE;
805 out = (ast_expression*)ast_ternary_new(ctx,
806 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
808 (ast_expression*)parser->fold->imm_float[2],
811 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
813 (ast_expression*)parser->fold->imm_float[0],
816 (ast_expression*)parser->fold->imm_float[1]
826 generated_op += 1; /* INSTR_GT */
829 generated_op += 1; /* INSTR_LT */
831 case opid2('>', '='):
832 generated_op += 1; /* INSTR_GE */
834 case opid2('<', '='):
835 generated_op += INSTR_LE;
836 if (NotSameType(TYPE_FLOAT)) {
837 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
838 type_name[exprs[0]->vtype],
839 type_name[exprs[1]->vtype]);
842 if (!(out = fold_op(parser->fold, op, exprs)))
843 out = fold_binary(ctx, generated_op, exprs[0], exprs[1]);
845 case opid2('!', '='):
846 if (exprs[0]->vtype != exprs[1]->vtype) {
847 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
848 type_name[exprs[0]->vtype],
849 type_name[exprs[1]->vtype]);
852 if (!(out = fold_op(parser->fold, op, exprs)))
853 out = fold_binary(ctx, type_ne_instr[exprs[0]->vtype], exprs[0], exprs[1]);
855 case opid2('=', '='):
856 if (exprs[0]->vtype != exprs[1]->vtype) {
857 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
858 type_name[exprs[0]->vtype],
859 type_name[exprs[1]->vtype]);
862 if (!(out = fold_op(parser->fold, op, exprs)))
863 out = fold_binary(ctx, type_eq_instr[exprs[0]->vtype], exprs[0], exprs[1]);
867 if (ast_istype(exprs[0], ast_entfield)) {
868 ast_expression *field = ((ast_entfield*)exprs[0])->field;
869 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
870 exprs[0]->vtype == TYPE_FIELD &&
871 exprs[0]->next->vtype == TYPE_VECTOR)
873 assignop = type_storep_instr[TYPE_VECTOR];
876 assignop = type_storep_instr[exprs[0]->vtype];
877 if (assignop == VINSTR_END || !ast_compare_type(field->next, exprs[1]))
879 ast_type_to_string(field->next, ty1, sizeof(ty1));
880 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
881 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
882 field->next->vtype == TYPE_FUNCTION &&
883 exprs[1]->vtype == TYPE_FUNCTION)
885 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
886 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
889 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
894 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
895 exprs[0]->vtype == TYPE_FIELD &&
896 exprs[0]->next->vtype == TYPE_VECTOR)
898 assignop = type_store_instr[TYPE_VECTOR];
901 assignop = type_store_instr[exprs[0]->vtype];
904 if (assignop == VINSTR_END) {
905 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
906 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
907 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
909 else if (!ast_compare_type(exprs[0], exprs[1]))
911 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
912 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
913 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
914 exprs[0]->vtype == TYPE_FUNCTION &&
915 exprs[1]->vtype == TYPE_FUNCTION)
917 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
918 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
921 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
924 (void)check_write_to(ctx, exprs[0]);
925 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
927 case opid3('+','+','P'):
928 case opid3('-','-','P'):
930 if (exprs[0]->vtype != TYPE_FLOAT) {
931 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
932 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
935 if (op->id == opid3('+','+','P'))
939 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
940 if (ast_istype(exprs[0], ast_entfield)) {
941 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
943 (ast_expression*)parser->fold->imm_float[1]);
945 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
947 (ast_expression*)parser->fold->imm_float[1]);
950 case opid3('S','+','+'):
951 case opid3('S','-','-'):
953 if (exprs[0]->vtype != TYPE_FLOAT) {
954 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
955 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
958 if (op->id == opid3('S','+','+')) {
965 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
966 if (ast_istype(exprs[0], ast_entfield)) {
967 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
969 (ast_expression*)parser->fold->imm_float[1]);
971 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
973 (ast_expression*)parser->fold->imm_float[1]);
977 out = fold_binary(ctx, subop,
979 (ast_expression*)parser->fold->imm_float[1]);
984 if (exprs[0]->vtype != exprs[1]->vtype ||
985 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
987 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
988 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
989 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
993 (void)check_write_to(ctx, exprs[0]);
994 if (ast_istype(exprs[0], ast_entfield))
995 assignop = type_storep_instr[exprs[0]->vtype];
997 assignop = type_store_instr[exprs[0]->vtype];
998 switch (exprs[0]->vtype) {
1000 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1001 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1002 exprs[0], exprs[1]);
1005 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1006 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1007 exprs[0], exprs[1]);
1010 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1011 type_name[exprs[0]->vtype],
1012 type_name[exprs[1]->vtype]);
1016 case opid2('*','='):
1017 case opid2('/','='):
1018 if (exprs[1]->vtype != TYPE_FLOAT ||
1019 !(exprs[0]->vtype == TYPE_FLOAT ||
1020 exprs[0]->vtype == TYPE_VECTOR))
1022 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1023 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1024 compile_error(ctx, "invalid types used in expression: %s and %s",
1028 (void)check_write_to(ctx, exprs[0]);
1029 if (ast_istype(exprs[0], ast_entfield))
1030 assignop = type_storep_instr[exprs[0]->vtype];
1032 assignop = type_store_instr[exprs[0]->vtype];
1033 switch (exprs[0]->vtype) {
1035 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1036 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1037 exprs[0], exprs[1]);
1040 if (op->id == opid2('*','=')) {
1041 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1042 exprs[0], exprs[1]);
1044 out = fold_binary(ctx, INSTR_DIV_F,
1045 (ast_expression*)parser->fold->imm_float[1],
1048 compile_error(ctx, "internal error: failed to generate division");
1051 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1056 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1057 type_name[exprs[0]->vtype],
1058 type_name[exprs[1]->vtype]);
1062 case opid2('&','='):
1063 case opid2('|','='):
1064 case opid2('^','='):
1065 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1066 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1067 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1068 compile_error(ctx, "invalid types used in expression: %s and %s",
1072 (void)check_write_to(ctx, exprs[0]);
1073 if (ast_istype(exprs[0], ast_entfield))
1074 assignop = type_storep_instr[exprs[0]->vtype];
1076 assignop = type_store_instr[exprs[0]->vtype];
1077 if (exprs[0]->vtype == TYPE_FLOAT)
1078 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1079 (op->id == opid2('^','=') ? VINSTR_BITXOR : op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1080 exprs[0], exprs[1]);
1082 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1083 (op->id == opid2('^','=') ? VINSTR_BITXOR_V : op->id == opid2('&','=') ? VINSTR_BITAND_V : VINSTR_BITOR_V),
1084 exprs[0], exprs[1]);
1086 case opid3('&','~','='):
1087 /* This is like: a &= ~(b);
1088 * But QC has no bitwise-not, so we implement it as
1091 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1092 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1093 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1094 compile_error(ctx, "invalid types used in expression: %s and %s",
1098 if (ast_istype(exprs[0], ast_entfield))
1099 assignop = type_storep_instr[exprs[0]->vtype];
1101 assignop = type_store_instr[exprs[0]->vtype];
1102 if (exprs[0]->vtype == TYPE_FLOAT)
1103 out = fold_binary(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1105 out = fold_binary(ctx, VINSTR_BITAND_V, exprs[0], exprs[1]);
1108 (void)check_write_to(ctx, exprs[0]);
1109 if (exprs[0]->vtype == TYPE_FLOAT)
1110 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1112 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_V, exprs[0], out);
1113 asbinstore->keep_dest = true;
1114 out = (ast_expression*)asbinstore;
1117 case opid2('~', 'P'):
1118 if (exprs[0]->vtype != TYPE_FLOAT && exprs[0]->vtype != TYPE_VECTOR) {
1119 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1120 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1123 if (!(out = fold_op(parser->fold, op, exprs))) {
1124 if (exprs[0]->vtype == TYPE_FLOAT) {
1125 out = fold_binary(ctx, INSTR_SUB_F, (ast_expression*)parser->fold->imm_float[2], exprs[0]);
1127 out = fold_binary(ctx, INSTR_SUB_V, (ast_expression*)parser->fold->imm_vector[1], exprs[0]);
1134 compile_error(ctx, "failed to apply operator %s", op->op);
1138 vec_push(sy->out, syexp(ctx, out));
1142 static bool parser_close_call(parser_t *parser, shunt *sy)
1144 /* was a function call */
1145 ast_expression *fun;
1146 ast_value *funval = NULL;
1150 size_t paramcount, i;
1153 fid = vec_last(sy->ops).off;
1154 vec_shrinkby(sy->ops, 1);
1156 /* out[fid] is the function
1157 * everything above is parameters...
1159 if (!vec_size(sy->argc)) {
1160 parseerror(parser, "internal error: no argument counter available");
1164 paramcount = vec_last(sy->argc);
1167 if (vec_size(sy->out) < fid) {
1168 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1169 (unsigned long)vec_size(sy->out),
1171 (unsigned long)paramcount);
1176 * TODO handle this at the intrinsic level with an ast_intrinsic
1179 if ((fun = sy->out[fid].out) == intrin_debug_typestring(parser->intrin)) {
1181 if (fid+2 != vec_size(sy->out) ||
1182 vec_last(sy->out).block)
1184 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1187 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1188 ast_unref(vec_last(sy->out).out);
1189 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1190 (ast_expression*)fold_constgen_string(parser->fold, ty, false));
1191 vec_shrinkby(sy->out, 1);
1196 * Now we need to determine if the function that is being called is
1197 * an intrinsic so we can evaluate if the arguments to it are constant
1198 * and than fruitfully fold them.
1200 #define fold_can_1(X) \
1201 (ast_istype(((ast_expression*)(X)), ast_value) && (X)->hasvalue && ((X)->cvq == CV_CONST) && \
1202 ((ast_expression*)(X))->vtype != TYPE_FUNCTION)
1204 if (fid + 1 < vec_size(sy->out))
1207 for (i = 0; i < paramcount; ++i) {
1208 if (!fold_can_1((ast_value*)sy->out[fid + 1 + i].out)) {
1215 * All is well which ends well, if we make it into here we can ignore the
1216 * intrinsic call and just evaluate it i.e constant fold it.
1218 if (fold && ast_istype(fun, ast_value) && ((ast_value*)fun)->intrinsic) {
1219 ast_expression **exprs = NULL;
1220 ast_expression *foldval = NULL;
1222 for (i = 0; i < paramcount; i++)
1223 vec_push(exprs, sy->out[fid+1 + i].out);
1225 if (!(foldval = intrin_fold(parser->intrin, (ast_value*)fun, exprs))) {
1231 * Blub: what sorts of unreffing and resizing of
1232 * sy->out should I be doing here?
1234 sy->out[fid] = syexp(foldval->node.context, foldval);
1235 vec_shrinkby(sy->out, paramcount);
1242 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1247 if (fid+1 + paramcount != vec_size(sy->out)) {
1248 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1249 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1253 for (i = 0; i < paramcount; ++i)
1254 vec_push(call->params, sy->out[fid+1 + i].out);
1255 vec_shrinkby(sy->out, paramcount);
1256 (void)!ast_call_check_types(call, parser->function->vtype->expression.varparam);
1257 if (parser->max_param_count < paramcount)
1258 parser->max_param_count = paramcount;
1260 if (ast_istype(fun, ast_value)) {
1261 funval = (ast_value*)fun;
1262 if ((fun->flags & AST_FLAG_VARIADIC) &&
1263 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1265 call->va_count = (ast_expression*)fold_constgen_float(parser->fold, (qcfloat_t)paramcount);
1269 /* overwrite fid, the function, with a call */
1270 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1272 if (fun->vtype != TYPE_FUNCTION) {
1273 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1278 parseerror(parser, "could not determine function return type");
1281 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1283 if (fun->flags & AST_FLAG_DEPRECATED) {
1285 return !parsewarning(parser, WARN_DEPRECATED,
1286 "call to function (which is marked deprecated)\n",
1287 "-> it has been declared here: %s:%i",
1288 ast_ctx(fun).file, ast_ctx(fun).line);
1291 return !parsewarning(parser, WARN_DEPRECATED,
1292 "call to `%s` (which is marked deprecated)\n"
1293 "-> `%s` declared here: %s:%i",
1294 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1296 return !parsewarning(parser, WARN_DEPRECATED,
1297 "call to `%s` (deprecated: %s)\n"
1298 "-> `%s` declared here: %s:%i",
1299 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1303 if (vec_size(fun->params) != paramcount &&
1304 !((fun->flags & AST_FLAG_VARIADIC) &&
1305 vec_size(fun->params) < paramcount))
1307 const char *fewmany = (vec_size(fun->params) > paramcount) ? "few" : "many";
1309 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1310 "too %s parameters for call to %s: expected %i, got %i\n"
1311 " -> `%s` has been declared here: %s:%i",
1312 fewmany, fval->name, (int)vec_size(fun->params), (int)paramcount,
1313 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1315 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1316 "too %s parameters for function call: expected %i, got %i\n"
1317 " -> it has been declared here: %s:%i",
1318 fewmany, (int)vec_size(fun->params), (int)paramcount,
1319 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1326 static bool parser_close_paren(parser_t *parser, shunt *sy)
1328 if (!vec_size(sy->ops)) {
1329 parseerror(parser, "unmatched closing paren");
1333 while (vec_size(sy->ops)) {
1334 if (vec_last(sy->ops).isparen) {
1335 if (vec_last(sy->paren) == PAREN_FUNC) {
1337 if (!parser_close_call(parser, sy))
1341 if (vec_last(sy->paren) == PAREN_EXPR) {
1343 if (!vec_size(sy->out)) {
1344 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1345 vec_shrinkby(sy->ops, 1);
1348 vec_shrinkby(sy->ops, 1);
1351 if (vec_last(sy->paren) == PAREN_INDEX) {
1353 /* pop off the parenthesis */
1354 vec_shrinkby(sy->ops, 1);
1355 /* then apply the index operator */
1356 if (!parser_sy_apply_operator(parser, sy))
1360 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1361 vec_last(sy->paren) = PAREN_TERNARY2;
1362 /* pop off the parenthesis */
1363 vec_shrinkby(sy->ops, 1);
1366 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1369 if (!parser_sy_apply_operator(parser, sy))
1375 static void parser_reclassify_token(parser_t *parser)
1378 if (parser->tok >= TOKEN_START)
1380 for (i = 0; i < operator_count; ++i) {
1381 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1382 parser->tok = TOKEN_OPERATOR;
1388 static ast_expression* parse_vararg_do(parser_t *parser)
1390 ast_expression *idx, *out;
1392 ast_value *funtype = parser->function->vtype;
1393 lex_ctx_t ctx = parser_ctx(parser);
1395 if (!parser->function->varargs) {
1396 parseerror(parser, "function has no variable argument list");
1400 if (!parser_next(parser) || parser->tok != '(') {
1401 parseerror(parser, "expected parameter index and type in parenthesis");
1404 if (!parser_next(parser)) {
1405 parseerror(parser, "error parsing parameter index");
1409 idx = parse_expression_leave(parser, true, false, false);
1413 if (parser->tok != ',') {
1414 if (parser->tok != ')') {
1416 parseerror(parser, "expected comma after parameter index");
1419 /* vararg piping: ...(start) */
1420 out = (ast_expression*)ast_argpipe_new(ctx, idx);
1424 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1426 parseerror(parser, "expected typename for vararg");
1430 typevar = parse_typename(parser, NULL, NULL, NULL);
1436 if (parser->tok != ')') {
1438 ast_delete(typevar);
1439 parseerror(parser, "expected closing paren");
1443 if (funtype->expression.varparam &&
1444 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1448 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1449 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1450 compile_error(ast_ctx(typevar),
1451 "function was declared to take varargs of type `%s`, requested type is: %s",
1455 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1456 ast_type_adopt(out, typevar);
1457 ast_delete(typevar);
1461 static ast_expression* parse_vararg(parser_t *parser)
1463 bool old_noops = parser->lex->flags.noops;
1465 ast_expression *out;
1467 parser->lex->flags.noops = true;
1468 out = parse_vararg_do(parser);
1470 parser->lex->flags.noops = old_noops;
1474 /* not to be exposed */
1475 bool ftepp_predef_exists(const char *name);
1476 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1478 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1479 parser->tok == TOKEN_IDENT &&
1480 !strcmp(parser_tokval(parser), "_"))
1482 /* a translatable string */
1485 parser->lex->flags.noops = true;
1486 if (!parser_next(parser) || parser->tok != '(') {
1487 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1490 parser->lex->flags.noops = false;
1491 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1492 parseerror(parser, "expected a constant string in translatable-string extension");
1495 val = (ast_value*)fold_constgen_string(parser->fold, parser_tokval(parser), true);
1498 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1500 if (!parser_next(parser) || parser->tok != ')') {
1501 parseerror(parser, "expected closing paren after translatable string");
1506 else if (parser->tok == TOKEN_DOTS)
1509 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1510 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1513 va = parse_vararg(parser);
1516 vec_push(sy->out, syexp(parser_ctx(parser), va));
1519 else if (parser->tok == TOKEN_FLOATCONST) {
1520 ast_expression *val = fold_constgen_float(parser->fold, (parser_token(parser)->constval.f));
1523 vec_push(sy->out, syexp(parser_ctx(parser), val));
1526 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1527 ast_expression *val = fold_constgen_float(parser->fold, (qcfloat_t)(parser_token(parser)->constval.i));
1530 vec_push(sy->out, syexp(parser_ctx(parser), val));
1533 else if (parser->tok == TOKEN_STRINGCONST) {
1534 ast_expression *val = fold_constgen_string(parser->fold, parser_tokval(parser), false);
1537 vec_push(sy->out, syexp(parser_ctx(parser), val));
1540 else if (parser->tok == TOKEN_VECTORCONST) {
1541 ast_expression *val = fold_constgen_vector(parser->fold, parser_token(parser)->constval.v);
1544 vec_push(sy->out, syexp(parser_ctx(parser), val));
1547 else if (parser->tok == TOKEN_IDENT)
1549 const char *ctoken = parser_tokval(parser);
1550 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1551 ast_expression *var;
1552 /* a_vector.{x,y,z} */
1553 if (!vec_size(sy->ops) ||
1554 !vec_last(sy->ops).etype ||
1555 operators[vec_last(sy->ops).etype-1].id != opid1('.'))
1557 /* When adding more intrinsics, fix the above condition */
1560 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1562 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1564 var = parser_find_var(parser, parser_tokval(parser));
1566 var = parser_find_field(parser, parser_tokval(parser));
1568 if (!var && with_labels) {
1569 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1571 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1572 var = (ast_expression*)lbl;
1573 vec_push(parser->labels, lbl);
1576 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
1577 var = (ast_expression*)fold_constgen_string(parser->fold, parser->function->name, false);
1580 * now we try for the real intrinsic hashtable. If the string
1581 * begins with __builtin, we simply skip past it, otherwise we
1582 * use the identifier as is.
1584 if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
1585 var = intrin_func(parser->intrin, parser_tokval(parser));
1589 char *correct = NULL;
1593 * sometimes people use preprocessing predefs without enabling them
1594 * i've done this thousands of times already myself. Lets check for
1595 * it in the predef table. And diagnose it better :)
1597 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
1598 parseerror(parser, "unexpected identifier: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1603 * TODO: determine the best score for the identifier: be it
1604 * a variable, a field.
1606 * We should also consider adding correction tables for
1607 * other things as well.
1609 if (OPTS_OPTION_BOOL(OPTION_CORRECTION) && strlen(parser_tokval(parser)) <= 16) {
1611 correct_init(&corr);
1613 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1614 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1615 if (strcmp(correct, parser_tokval(parser))) {
1622 correct_free(&corr);
1625 parseerror(parser, "unexpected identifier: %s (did you mean %s?)", parser_tokval(parser), correct);
1630 parseerror(parser, "unexpected identifier: %s", parser_tokval(parser));
1636 if (ast_istype(var, ast_value)) {
1637 ((ast_value*)var)->uses++;
1639 else if (ast_istype(var, ast_member)) {
1640 ast_member *mem = (ast_member*)var;
1641 if (ast_istype(mem->owner, ast_value))
1642 ((ast_value*)(mem->owner))->uses++;
1645 vec_push(sy->out, syexp(parser_ctx(parser), var));
1648 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1652 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1654 ast_expression *expr = NULL;
1657 bool wantop = false;
1658 /* only warn once about an assignment in a truth value because the current code
1659 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1661 bool warn_parenthesis = true;
1663 /* count the parens because an if starts with one, so the
1664 * end of a condition is an unmatched closing paren
1668 memset(&sy, 0, sizeof(sy));
1670 parser->lex->flags.noops = false;
1672 parser_reclassify_token(parser);
1676 if (parser->tok == TOKEN_TYPENAME) {
1677 parseerror(parser, "unexpected typename `%s`", parser_tokval(parser));
1681 if (parser->tok == TOKEN_OPERATOR)
1683 /* classify the operator */
1684 const oper_info *op;
1685 const oper_info *olast = NULL;
1687 for (o = 0; o < operator_count; ++o) {
1688 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1689 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1690 !strcmp(parser_tokval(parser), operators[o].op))
1695 if (o == operator_count) {
1696 compile_error(parser_ctx(parser), "unexpected operator: %s", parser_tokval(parser));
1699 /* found an operator */
1702 /* when declaring variables, a comma starts a new variable */
1703 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
1704 /* fixup the token */
1709 /* a colon without a pervious question mark cannot be a ternary */
1710 if (!ternaries && op->id == opid2(':','?')) {
1715 if (op->id == opid1(',')) {
1716 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1717 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1721 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1722 olast = &operators[vec_last(sy.ops).etype-1];
1724 /* first only apply higher precedences, assoc_left+equal comes after we warn about precedence rules */
1725 while (olast && op->prec < olast->prec)
1727 if (!parser_sy_apply_operator(parser, &sy))
1729 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1730 olast = &operators[vec_last(sy.ops).etype-1];
1735 #define IsAssignOp(x) (\
1736 (x) == opid1('=') || \
1737 (x) == opid2('+','=') || \
1738 (x) == opid2('-','=') || \
1739 (x) == opid2('*','=') || \
1740 (x) == opid2('/','=') || \
1741 (x) == opid2('%','=') || \
1742 (x) == opid2('&','=') || \
1743 (x) == opid2('|','=') || \
1744 (x) == opid3('&','~','=') \
1746 if (warn_parenthesis) {
1747 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1748 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1749 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
1752 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1753 warn_parenthesis = false;
1756 if (olast && olast->id != op->id) {
1757 if ((op->id == opid1('&') || op->id == opid1('|') || op->id == opid1('^')) &&
1758 (olast->id == opid1('&') || olast->id == opid1('|') || olast->id == opid1('^')))
1760 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around bitwise operations");
1761 warn_parenthesis = false;
1763 else if ((op->id == opid2('&','&') || op->id == opid2('|','|')) &&
1764 (olast->id == opid2('&','&') || olast->id == opid2('|','|')))
1766 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around logical operations");
1767 warn_parenthesis = false;
1773 (op->prec < olast->prec) ||
1774 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1776 if (!parser_sy_apply_operator(parser, &sy))
1778 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1779 olast = &operators[vec_last(sy.ops).etype-1];
1784 if (op->id == opid1('(')) {
1786 size_t sycount = vec_size(sy.out);
1787 /* we expected an operator, this is the function-call operator */
1788 vec_push(sy.paren, PAREN_FUNC);
1789 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
1790 vec_push(sy.argc, 0);
1792 vec_push(sy.paren, PAREN_EXPR);
1793 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1796 } else if (op->id == opid1('[')) {
1798 parseerror(parser, "unexpected array subscript");
1801 vec_push(sy.paren, PAREN_INDEX);
1802 /* push both the operator and the paren, this makes life easier */
1803 vec_push(sy.ops, syop(parser_ctx(parser), op));
1804 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1806 } else if (op->id == opid2('?',':')) {
1807 vec_push(sy.ops, syop(parser_ctx(parser), op));
1808 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1811 vec_push(sy.paren, PAREN_TERNARY1);
1812 } else if (op->id == opid2(':','?')) {
1813 if (!vec_size(sy.paren)) {
1814 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1817 if (vec_last(sy.paren) != PAREN_TERNARY1) {
1818 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1821 if (!parser_close_paren(parser, &sy))
1823 vec_push(sy.ops, syop(parser_ctx(parser), op));
1827 vec_push(sy.ops, syop(parser_ctx(parser), op));
1828 wantop = !!(op->flags & OP_SUFFIX);
1831 else if (parser->tok == ')') {
1832 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1833 if (!parser_sy_apply_operator(parser, &sy))
1836 if (!vec_size(sy.paren))
1839 if (vec_last(sy.paren) == PAREN_TERNARY1) {
1840 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
1843 if (!parser_close_paren(parser, &sy))
1846 /* must be a function call without parameters */
1847 if (vec_last(sy.paren) != PAREN_FUNC) {
1848 parseerror(parser, "closing paren in invalid position");
1851 if (!parser_close_paren(parser, &sy))
1856 else if (parser->tok == '(') {
1857 parseerror(parser, "internal error: '(' should be classified as operator");
1860 else if (parser->tok == '[') {
1861 parseerror(parser, "internal error: '[' should be classified as operator");
1864 else if (parser->tok == ']') {
1865 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1866 if (!parser_sy_apply_operator(parser, &sy))
1869 if (!vec_size(sy.paren))
1871 if (vec_last(sy.paren) != PAREN_INDEX) {
1872 parseerror(parser, "mismatched parentheses, unexpected ']'");
1875 if (!parser_close_paren(parser, &sy))
1880 if (!parse_sya_operand(parser, &sy, with_labels))
1883 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
1884 vec_last(sy.argc)++;
1889 /* in this case we might want to allow constant string concatenation */
1890 bool concatenated = false;
1891 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
1892 ast_expression *lexpr = vec_last(sy.out).out;
1893 if (ast_istype(lexpr, ast_value)) {
1894 ast_value *last = (ast_value*)lexpr;
1895 if (last->isimm == true && last->cvq == CV_CONST &&
1896 last->hasvalue && last->expression.vtype == TYPE_STRING)
1898 char *newstr = NULL;
1899 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
1900 vec_last(sy.out).out = (ast_expression*)fold_constgen_string(parser->fold, newstr, false);
1902 concatenated = true;
1906 if (!concatenated) {
1907 parseerror(parser, "expected operator or end of statement");
1912 if (!parser_next(parser)) {
1915 if (parser->tok == ';' ||
1916 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
1917 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
1923 while (vec_size(sy.ops)) {
1924 if (!parser_sy_apply_operator(parser, &sy))
1928 parser->lex->flags.noops = true;
1929 if (vec_size(sy.out) != 1) {
1930 parseerror(parser, "expression expected");
1933 expr = sy.out[0].out;
1936 if (vec_size(sy.paren)) {
1937 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
1945 parser->lex->flags.noops = true;
1946 for (i = 0; i < vec_size(sy.out); ++i) {
1948 ast_unref(sy.out[i].out);
1957 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
1959 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
1962 if (parser->tok != ';') {
1963 parseerror(parser, "semicolon expected after expression");
1967 if (!parser_next(parser)) {
1974 static void parser_enterblock(parser_t *parser)
1976 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1977 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1978 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1979 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1980 vec_push(parser->_block_ctx, parser_ctx(parser));
1983 vec_push(parser->correct_variables, correct_trie_new());
1984 vec_push(parser->correct_variables_score, NULL);
1987 static bool parser_leaveblock(parser_t *parser)
1990 size_t locals, typedefs;
1992 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1993 parseerror(parser, "internal error: parser_leaveblock with no block");
1997 util_htdel(vec_last(parser->variables));
1998 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2000 vec_pop(parser->variables);
2001 vec_pop(parser->correct_variables);
2002 vec_pop(parser->correct_variables_score);
2003 if (!vec_size(parser->_blocklocals)) {
2004 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2008 locals = vec_last(parser->_blocklocals);
2009 vec_pop(parser->_blocklocals);
2010 while (vec_size(parser->_locals) != locals) {
2011 ast_expression *e = vec_last(parser->_locals);
2012 ast_value *v = (ast_value*)e;
2013 vec_pop(parser->_locals);
2014 if (ast_istype(e, ast_value) && !v->uses) {
2015 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2020 typedefs = vec_last(parser->_blocktypedefs);
2021 while (vec_size(parser->_typedefs) != typedefs) {
2022 ast_delete(vec_last(parser->_typedefs));
2023 vec_pop(parser->_typedefs);
2025 util_htdel(vec_last(parser->typedefs));
2026 vec_pop(parser->typedefs);
2028 vec_pop(parser->_block_ctx);
2033 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2035 vec_push(parser->_locals, e);
2036 util_htset(vec_last(parser->variables), name, (void*)e);
2040 vec_last(parser->correct_variables),
2041 &vec_last(parser->correct_variables_score),
2046 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2048 vec_push(parser->globals, e);
2049 util_htset(parser->htglobals, name, e);
2053 parser->correct_variables[0],
2054 &parser->correct_variables_score[0],
2059 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2063 ast_expression *prev;
2065 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2067 ast_type_to_string(cond, ty, sizeof(ty));
2068 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2071 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2074 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2077 parseerror(parser, "internal error: failed to process condition");
2082 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2084 /* vector types need to be cast to true booleans */
2085 ast_binary *bin = (ast_binary*)cond;
2086 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2088 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2090 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2093 parseerror(parser, "internal error: failed to process condition");
2100 unary = (ast_unary*)cond;
2101 /* ast_istype dereferences cond, should test here for safety */
2102 while (cond && ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2104 cond = unary->operand;
2105 unary->operand = NULL;
2108 unary = (ast_unary*)cond;
2112 parseerror(parser, "internal error: failed to process condition");
2114 if (ifnot) *_ifnot = !*_ifnot;
2118 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2121 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2124 lex_ctx_t ctx = parser_ctx(parser);
2126 (void)block; /* not touching */
2128 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2129 if (!parser_next(parser)) {
2130 parseerror(parser, "expected condition or 'not'");
2133 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2135 if (!parser_next(parser)) {
2136 parseerror(parser, "expected condition in parenthesis");
2140 if (parser->tok != '(') {
2141 parseerror(parser, "expected 'if' condition in parenthesis");
2144 /* parse into the expression */
2145 if (!parser_next(parser)) {
2146 parseerror(parser, "expected 'if' condition after opening paren");
2149 /* parse the condition */
2150 cond = parse_expression_leave(parser, false, true, false);
2154 if (parser->tok != ')') {
2155 parseerror(parser, "expected closing paren after 'if' condition");
2159 /* parse into the 'then' branch */
2160 if (!parser_next(parser)) {
2161 parseerror(parser, "expected statement for on-true branch of 'if'");
2165 if (!parse_statement_or_block(parser, &ontrue)) {
2170 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2171 /* check for an else */
2172 if (!strcmp(parser_tokval(parser), "else")) {
2173 /* parse into the 'else' branch */
2174 if (!parser_next(parser)) {
2175 parseerror(parser, "expected on-false branch after 'else'");
2180 if (!parse_statement_or_block(parser, &onfalse)) {
2187 cond = process_condition(parser, cond, &ifnot);
2189 if (ontrue) ast_delete(ontrue);
2190 if (onfalse) ast_delete(onfalse);
2195 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2197 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2198 *out = (ast_expression*)ifthen;
2202 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2203 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2208 /* skip the 'while' and get the body */
2209 if (!parser_next(parser)) {
2210 if (OPTS_FLAG(LOOP_LABELS))
2211 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2213 parseerror(parser, "expected 'while' condition in parenthesis");
2217 if (parser->tok == ':') {
2218 if (!OPTS_FLAG(LOOP_LABELS))
2219 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2220 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2221 parseerror(parser, "expected loop label");
2224 label = util_strdup(parser_tokval(parser));
2225 if (!parser_next(parser)) {
2227 parseerror(parser, "expected 'while' condition in parenthesis");
2232 if (parser->tok != '(') {
2233 parseerror(parser, "expected 'while' condition in parenthesis");
2237 vec_push(parser->breaks, label);
2238 vec_push(parser->continues, label);
2240 rv = parse_while_go(parser, block, out);
2243 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2244 parseerror(parser, "internal error: label stack corrupted");
2250 vec_pop(parser->breaks);
2251 vec_pop(parser->continues);
2256 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2259 ast_expression *cond, *ontrue;
2263 lex_ctx_t ctx = parser_ctx(parser);
2265 (void)block; /* not touching */
2267 /* parse into the expression */
2268 if (!parser_next(parser)) {
2269 parseerror(parser, "expected 'while' condition after opening paren");
2272 /* parse the condition */
2273 cond = parse_expression_leave(parser, false, true, false);
2277 if (parser->tok != ')') {
2278 parseerror(parser, "expected closing paren after 'while' condition");
2282 /* parse into the 'then' branch */
2283 if (!parser_next(parser)) {
2284 parseerror(parser, "expected while-loop body");
2288 if (!parse_statement_or_block(parser, &ontrue)) {
2293 cond = process_condition(parser, cond, &ifnot);
2298 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2299 *out = (ast_expression*)aloop;
2303 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2304 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2309 /* skip the 'do' and get the body */
2310 if (!parser_next(parser)) {
2311 if (OPTS_FLAG(LOOP_LABELS))
2312 parseerror(parser, "expected loop label or body");
2314 parseerror(parser, "expected loop body");
2318 if (parser->tok == ':') {
2319 if (!OPTS_FLAG(LOOP_LABELS))
2320 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2321 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2322 parseerror(parser, "expected loop label");
2325 label = util_strdup(parser_tokval(parser));
2326 if (!parser_next(parser)) {
2328 parseerror(parser, "expected loop body");
2333 vec_push(parser->breaks, label);
2334 vec_push(parser->continues, label);
2336 rv = parse_dowhile_go(parser, block, out);
2339 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2340 parseerror(parser, "internal error: label stack corrupted");
2343 * Test for NULL otherwise ast_delete dereferences null pointer
2351 vec_pop(parser->breaks);
2352 vec_pop(parser->continues);
2357 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2360 ast_expression *cond, *ontrue;
2364 lex_ctx_t ctx = parser_ctx(parser);
2366 (void)block; /* not touching */
2368 if (!parse_statement_or_block(parser, &ontrue))
2371 /* expect the "while" */
2372 if (parser->tok != TOKEN_KEYWORD ||
2373 strcmp(parser_tokval(parser), "while"))
2375 parseerror(parser, "expected 'while' and condition");
2380 /* skip the 'while' and check for opening paren */
2381 if (!parser_next(parser) || parser->tok != '(') {
2382 parseerror(parser, "expected 'while' condition in parenthesis");
2386 /* parse into the expression */
2387 if (!parser_next(parser)) {
2388 parseerror(parser, "expected 'while' condition after opening paren");
2392 /* parse the condition */
2393 cond = parse_expression_leave(parser, false, true, false);
2397 if (parser->tok != ')') {
2398 parseerror(parser, "expected closing paren after 'while' condition");
2404 if (!parser_next(parser) || parser->tok != ';') {
2405 parseerror(parser, "expected semicolon after condition");
2411 if (!parser_next(parser)) {
2412 parseerror(parser, "parse error");
2418 cond = process_condition(parser, cond, &ifnot);
2423 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2424 *out = (ast_expression*)aloop;
2428 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2429 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2434 /* skip the 'for' and check for opening paren */
2435 if (!parser_next(parser)) {
2436 if (OPTS_FLAG(LOOP_LABELS))
2437 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2439 parseerror(parser, "expected 'for' expressions in parenthesis");
2443 if (parser->tok == ':') {
2444 if (!OPTS_FLAG(LOOP_LABELS))
2445 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2446 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2447 parseerror(parser, "expected loop label");
2450 label = util_strdup(parser_tokval(parser));
2451 if (!parser_next(parser)) {
2453 parseerror(parser, "expected 'for' expressions in parenthesis");
2458 if (parser->tok != '(') {
2459 parseerror(parser, "expected 'for' expressions in parenthesis");
2463 vec_push(parser->breaks, label);
2464 vec_push(parser->continues, label);
2466 rv = parse_for_go(parser, block, out);
2469 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2470 parseerror(parser, "internal error: label stack corrupted");
2476 vec_pop(parser->breaks);
2477 vec_pop(parser->continues);
2481 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2484 ast_expression *initexpr, *cond, *increment, *ontrue;
2489 lex_ctx_t ctx = parser_ctx(parser);
2491 parser_enterblock(parser);
2498 /* parse into the expression */
2499 if (!parser_next(parser)) {
2500 parseerror(parser, "expected 'for' initializer after opening paren");
2505 if (parser->tok == TOKEN_IDENT)
2506 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2508 if (typevar || parser->tok == TOKEN_TYPENAME) {
2510 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2511 if (parsewarning(parser, WARN_EXTENSIONS,
2512 "current standard does not allow variable declarations in for-loop initializers"))
2516 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2519 else if (parser->tok != ';')
2521 initexpr = parse_expression_leave(parser, false, false, false);
2526 /* move on to condition */
2527 if (parser->tok != ';') {
2528 parseerror(parser, "expected semicolon after for-loop initializer");
2531 if (!parser_next(parser)) {
2532 parseerror(parser, "expected for-loop condition");
2536 /* parse the condition */
2537 if (parser->tok != ';') {
2538 cond = parse_expression_leave(parser, false, true, false);
2543 /* move on to incrementor */
2544 if (parser->tok != ';') {
2545 parseerror(parser, "expected semicolon after for-loop initializer");
2548 if (!parser_next(parser)) {
2549 parseerror(parser, "expected for-loop condition");
2553 /* parse the incrementor */
2554 if (parser->tok != ')') {
2555 lex_ctx_t condctx = parser_ctx(parser);
2556 increment = parse_expression_leave(parser, false, false, false);
2559 if (!ast_side_effects(increment)) {
2560 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2566 if (parser->tok != ')') {
2567 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2570 /* parse into the 'then' branch */
2571 if (!parser_next(parser)) {
2572 parseerror(parser, "expected for-loop body");
2575 if (!parse_statement_or_block(parser, &ontrue))
2579 cond = process_condition(parser, cond, &ifnot);
2583 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2584 *out = (ast_expression*)aloop;
2586 if (!parser_leaveblock(parser)) {
2592 if (initexpr) ast_unref(initexpr);
2593 if (cond) ast_unref(cond);
2594 if (increment) ast_unref(increment);
2595 (void)!parser_leaveblock(parser);
2599 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2601 ast_expression *exp = NULL;
2602 ast_expression *var = NULL;
2603 ast_return *ret = NULL;
2604 ast_value *retval = parser->function->return_value;
2605 ast_value *expected = parser->function->vtype;
2607 lex_ctx_t ctx = parser_ctx(parser);
2609 (void)block; /* not touching */
2611 if (!parser_next(parser)) {
2612 parseerror(parser, "expected return expression");
2616 /* return assignments */
2617 if (parser->tok == '=') {
2618 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
2619 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
2623 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
2625 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
2626 parseerror(parser, "invalid return type: `%s'", ty1);
2630 if (!parser_next(parser)) {
2631 parseerror(parser, "expected return assignment expression");
2635 if (!(exp = parse_expression_leave(parser, false, false, false)))
2638 /* prepare the return value */
2640 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
2641 ast_type_adopt(retval, expected->expression.next);
2642 parser->function->return_value = retval;
2645 if (!ast_compare_type(exp, (ast_expression*)retval)) {
2646 char ty1[1024], ty2[1024];
2647 ast_type_to_string(exp, ty1, sizeof(ty1));
2648 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
2649 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
2652 /* store to 'return' local variable */
2653 var = (ast_expression*)ast_store_new(
2655 type_store_instr[expected->expression.next->vtype],
2656 (ast_expression*)retval, exp);
2663 if (parser->tok != ';')
2664 parseerror(parser, "missing semicolon after return assignment");
2665 else if (!parser_next(parser))
2666 parseerror(parser, "parse error after return assignment");
2672 if (parser->tok != ';') {
2673 exp = parse_expression(parser, false, false);
2677 if (exp->vtype != TYPE_NIL &&
2678 exp->vtype != ((ast_expression*)expected)->next->vtype)
2680 parseerror(parser, "return with invalid expression");
2683 ret = ast_return_new(ctx, exp);
2689 if (!parser_next(parser))
2690 parseerror(parser, "parse error");
2692 if (!retval && expected->expression.next->vtype != TYPE_VOID)
2694 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2696 ret = ast_return_new(ctx, (ast_expression*)retval);
2698 *out = (ast_expression*)ret;
2702 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2705 unsigned int levels = 0;
2706 lex_ctx_t ctx = parser_ctx(parser);
2707 const char **loops = (is_continue ? parser->continues : parser->breaks);
2709 (void)block; /* not touching */
2710 if (!parser_next(parser)) {
2711 parseerror(parser, "expected semicolon or loop label");
2715 if (!vec_size(loops)) {
2717 parseerror(parser, "`continue` can only be used inside loops");
2719 parseerror(parser, "`break` can only be used inside loops or switches");
2722 if (parser->tok == TOKEN_IDENT) {
2723 if (!OPTS_FLAG(LOOP_LABELS))
2724 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2725 i = vec_size(loops);
2727 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2730 parseerror(parser, "no such loop to %s: `%s`",
2731 (is_continue ? "continue" : "break out of"),
2732 parser_tokval(parser));
2737 if (!parser_next(parser)) {
2738 parseerror(parser, "expected semicolon");
2743 if (parser->tok != ';') {
2744 parseerror(parser, "expected semicolon");
2748 if (!parser_next(parser))
2749 parseerror(parser, "parse error");
2751 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2755 /* returns true when it was a variable qualifier, false otherwise!
2756 * on error, cvq is set to CV_WRONG
2758 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2760 bool had_const = false;
2761 bool had_var = false;
2762 bool had_noref = false;
2763 bool had_attrib = false;
2764 bool had_static = false;
2769 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2771 /* parse an attribute */
2772 if (!parser_next(parser)) {
2773 parseerror(parser, "expected attribute after `[[`");
2777 if (!strcmp(parser_tokval(parser), "noreturn")) {
2778 flags |= AST_FLAG_NORETURN;
2779 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2780 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2785 else if (!strcmp(parser_tokval(parser), "noref")) {
2787 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2788 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2793 else if (!strcmp(parser_tokval(parser), "inline")) {
2794 flags |= AST_FLAG_INLINE;
2795 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2796 parseerror(parser, "`inline` attribute has no parameters, expected `]]`");
2801 else if (!strcmp(parser_tokval(parser), "eraseable")) {
2802 flags |= AST_FLAG_ERASEABLE;
2803 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2804 parseerror(parser, "`eraseable` attribute has no parameters, expected `]]`");
2809 else if (!strcmp(parser_tokval(parser), "accumulate")) {
2810 flags |= AST_FLAG_ACCUMULATE;
2811 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2812 parseerror(parser, "`accumulate` attribute has no parameters, expected `]]`");
2817 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
2818 flags |= AST_FLAG_ALIAS;
2821 if (!parser_next(parser)) {
2822 parseerror(parser, "parse error in attribute");
2826 if (parser->tok == '(') {
2827 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2828 parseerror(parser, "`alias` attribute missing parameter");
2832 *message = util_strdup(parser_tokval(parser));
2834 if (!parser_next(parser)) {
2835 parseerror(parser, "parse error in attribute");
2839 if (parser->tok != ')') {
2840 parseerror(parser, "`alias` attribute expected `)` after parameter");
2844 if (!parser_next(parser)) {
2845 parseerror(parser, "parse error in attribute");
2850 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2851 parseerror(parser, "`alias` attribute expected `]]`");
2855 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2856 flags |= AST_FLAG_DEPRECATED;
2859 if (!parser_next(parser)) {
2860 parseerror(parser, "parse error in attribute");
2864 if (parser->tok == '(') {
2865 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2866 parseerror(parser, "`deprecated` attribute missing parameter");
2870 *message = util_strdup(parser_tokval(parser));
2872 if (!parser_next(parser)) {
2873 parseerror(parser, "parse error in attribute");
2877 if(parser->tok != ')') {
2878 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2882 if (!parser_next(parser)) {
2883 parseerror(parser, "parse error in attribute");
2888 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2889 parseerror(parser, "`deprecated` attribute expected `]]`");
2892 if (*message) mem_d(*message);
2900 /* Skip tokens until we hit a ]] */
2901 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2902 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2903 if (!parser_next(parser)) {
2904 parseerror(parser, "error inside attribute");
2911 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2913 else if (!strcmp(parser_tokval(parser), "const"))
2915 else if (!strcmp(parser_tokval(parser), "var"))
2917 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2919 else if (!strcmp(parser_tokval(parser), "noref"))
2921 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2926 if (!parser_next(parser))
2936 *is_static = had_static;
2940 parseerror(parser, "parse error after variable qualifier");
2945 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2946 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2951 /* skip the 'while' and get the body */
2952 if (!parser_next(parser)) {
2953 if (OPTS_FLAG(LOOP_LABELS))
2954 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2956 parseerror(parser, "expected 'switch' operand in parenthesis");
2960 if (parser->tok == ':') {
2961 if (!OPTS_FLAG(LOOP_LABELS))
2962 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2963 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2964 parseerror(parser, "expected loop label");
2967 label = util_strdup(parser_tokval(parser));
2968 if (!parser_next(parser)) {
2970 parseerror(parser, "expected 'switch' operand in parenthesis");
2975 if (parser->tok != '(') {
2976 parseerror(parser, "expected 'switch' operand in parenthesis");
2980 vec_push(parser->breaks, label);
2982 rv = parse_switch_go(parser, block, out);
2985 if (vec_last(parser->breaks) != label) {
2986 parseerror(parser, "internal error: label stack corrupted");
2992 vec_pop(parser->breaks);
2997 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
2999 ast_expression *operand;
3002 ast_switch *switchnode;
3003 ast_switch_case swcase;
3006 bool noref, is_static;
3007 uint32_t qflags = 0;
3009 lex_ctx_t ctx = parser_ctx(parser);
3011 (void)block; /* not touching */
3014 /* parse into the expression */
3015 if (!parser_next(parser)) {
3016 parseerror(parser, "expected switch operand");
3019 /* parse the operand */
3020 operand = parse_expression_leave(parser, false, false, false);
3024 switchnode = ast_switch_new(ctx, operand);
3027 if (parser->tok != ')') {
3028 ast_delete(switchnode);
3029 parseerror(parser, "expected closing paren after 'switch' operand");
3033 /* parse over the opening paren */
3034 if (!parser_next(parser) || parser->tok != '{') {
3035 ast_delete(switchnode);
3036 parseerror(parser, "expected list of cases");
3040 if (!parser_next(parser)) {
3041 ast_delete(switchnode);
3042 parseerror(parser, "expected 'case' or 'default'");
3046 /* new block; allow some variables to be declared here */
3047 parser_enterblock(parser);
3050 if (parser->tok == TOKEN_IDENT)
3051 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3052 if (typevar || parser->tok == TOKEN_TYPENAME) {
3053 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3054 ast_delete(switchnode);
3059 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3061 if (cvq == CV_WRONG) {
3062 ast_delete(switchnode);
3065 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3066 ast_delete(switchnode);
3075 while (parser->tok != '}') {
3076 ast_block *caseblock;
3078 if (!strcmp(parser_tokval(parser), "case")) {
3079 if (!parser_next(parser)) {
3080 ast_delete(switchnode);
3081 parseerror(parser, "expected expression for case");
3084 swcase.value = parse_expression_leave(parser, false, false, false);
3085 if (!swcase.value) {
3086 ast_delete(switchnode);
3087 parseerror(parser, "expected expression for case");
3090 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3091 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3092 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3098 else if (!strcmp(parser_tokval(parser), "default")) {
3099 swcase.value = NULL;
3100 if (!parser_next(parser)) {
3101 ast_delete(switchnode);
3102 parseerror(parser, "expected colon");
3107 ast_delete(switchnode);
3108 parseerror(parser, "expected 'case' or 'default'");
3112 /* Now the colon and body */
3113 if (parser->tok != ':') {
3114 if (swcase.value) ast_unref(swcase.value);
3115 ast_delete(switchnode);
3116 parseerror(parser, "expected colon");
3120 if (!parser_next(parser)) {
3121 if (swcase.value) ast_unref(swcase.value);
3122 ast_delete(switchnode);
3123 parseerror(parser, "expected statements or case");
3126 caseblock = ast_block_new(parser_ctx(parser));
3128 if (swcase.value) ast_unref(swcase.value);
3129 ast_delete(switchnode);
3132 swcase.code = (ast_expression*)caseblock;
3133 vec_push(switchnode->cases, swcase);
3135 ast_expression *expr;
3136 if (parser->tok == '}')
3138 if (parser->tok == TOKEN_KEYWORD) {
3139 if (!strcmp(parser_tokval(parser), "case") ||
3140 !strcmp(parser_tokval(parser), "default"))
3145 if (!parse_statement(parser, caseblock, &expr, true)) {
3146 ast_delete(switchnode);
3151 if (!ast_block_add_expr(caseblock, expr)) {
3152 ast_delete(switchnode);
3158 parser_leaveblock(parser);
3161 if (parser->tok != '}') {
3162 ast_delete(switchnode);
3163 parseerror(parser, "expected closing paren of case list");
3166 if (!parser_next(parser)) {
3167 ast_delete(switchnode);
3168 parseerror(parser, "parse error after switch");
3171 *out = (ast_expression*)switchnode;
3175 /* parse computed goto sides */
3176 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3177 ast_expression *on_true;
3178 ast_expression *on_false;
3179 ast_expression *cond;
3184 if (ast_istype(*side, ast_ternary)) {
3185 ast_ternary *tern = (ast_ternary*)*side;
3186 on_true = parse_goto_computed(parser, &tern->on_true);
3187 on_false = parse_goto_computed(parser, &tern->on_false);
3189 if (!on_true || !on_false) {
3190 parseerror(parser, "expected label or expression in ternary");
3191 if (on_true) ast_unref(on_true);
3192 if (on_false) ast_unref(on_false);
3200 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3201 } else if (ast_istype(*side, ast_label)) {
3202 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3203 ast_goto_set_label(gt, ((ast_label*)*side));
3205 return (ast_expression*)gt;
3210 static bool parse_goto(parser_t *parser, ast_expression **out)
3212 ast_goto *gt = NULL;
3213 ast_expression *lbl;
3215 if (!parser_next(parser))
3218 if (parser->tok != TOKEN_IDENT) {
3219 ast_expression *expression;
3221 /* could be an expression i.e computed goto :-) */
3222 if (parser->tok != '(') {
3223 parseerror(parser, "expected label name after `goto`");
3227 /* failed to parse expression for goto */
3228 if (!(expression = parse_expression(parser, false, true)) ||
3229 !(*out = parse_goto_computed(parser, &expression))) {
3230 parseerror(parser, "invalid goto expression");
3232 ast_unref(expression);
3239 /* not computed goto */
3240 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3241 lbl = parser_find_label(parser, gt->name);
3243 if (!ast_istype(lbl, ast_label)) {
3244 parseerror(parser, "internal error: label is not an ast_label");
3248 ast_goto_set_label(gt, (ast_label*)lbl);
3251 vec_push(parser->gotos, gt);
3253 if (!parser_next(parser) || parser->tok != ';') {
3254 parseerror(parser, "semicolon expected after goto label");
3257 if (!parser_next(parser)) {
3258 parseerror(parser, "parse error after goto");
3262 *out = (ast_expression*)gt;
3266 static bool parse_skipwhite(parser_t *parser)
3269 if (!parser_next(parser))
3271 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3272 return parser->tok < TOKEN_ERROR;
3275 static bool parse_eol(parser_t *parser)
3277 if (!parse_skipwhite(parser))
3279 return parser->tok == TOKEN_EOL;
3282 static bool parse_pragma_do(parser_t *parser)
3284 if (!parser_next(parser) ||
3285 parser->tok != TOKEN_IDENT ||
3286 strcmp(parser_tokval(parser), "pragma"))
3288 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3291 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3292 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3296 if (!strcmp(parser_tokval(parser), "noref")) {
3297 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3298 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3301 parser->noref = !!parser_token(parser)->constval.i;
3302 if (!parse_eol(parser)) {
3303 parseerror(parser, "parse error after `noref` pragma");
3309 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3312 while (!parse_eol(parser)) {
3313 parser_next(parser);
3322 static bool parse_pragma(parser_t *parser)
3325 parser->lex->flags.preprocessing = true;
3326 parser->lex->flags.mergelines = true;
3327 rv = parse_pragma_do(parser);
3328 if (parser->tok != TOKEN_EOL) {
3329 parseerror(parser, "junk after pragma");
3332 parser->lex->flags.preprocessing = false;
3333 parser->lex->flags.mergelines = false;
3334 if (!parser_next(parser)) {
3335 parseerror(parser, "parse error after pragma");
3341 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3343 bool noref, is_static;
3345 uint32_t qflags = 0;
3346 ast_value *typevar = NULL;
3347 char *vstring = NULL;
3351 if (parser->tok == TOKEN_IDENT)
3352 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3354 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.' || parser->tok == TOKEN_DOTS)
3356 /* local variable */
3358 parseerror(parser, "cannot declare a variable from here");
3361 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3362 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3365 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3369 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3371 if (cvq == CV_WRONG)
3373 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3375 else if (parser->tok == TOKEN_KEYWORD)
3377 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3382 if (!parser_next(parser)) {
3383 parseerror(parser, "parse error after __builtin_debug_printtype");
3387 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3389 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3390 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3391 if (!parser_next(parser)) {
3392 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3398 if (!parse_statement(parser, block, out, allow_cases))
3401 con_out("__builtin_debug_printtype: got no output node\n");
3404 ast_type_to_string(*out, ty, sizeof(ty));
3405 con_out("__builtin_debug_printtype: `%s`\n", ty);
3410 else if (!strcmp(parser_tokval(parser), "return"))
3412 return parse_return(parser, block, out);
3414 else if (!strcmp(parser_tokval(parser), "if"))
3416 return parse_if(parser, block, out);
3418 else if (!strcmp(parser_tokval(parser), "while"))
3420 return parse_while(parser, block, out);
3422 else if (!strcmp(parser_tokval(parser), "do"))
3424 return parse_dowhile(parser, block, out);
3426 else if (!strcmp(parser_tokval(parser), "for"))
3428 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3429 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3432 return parse_for(parser, block, out);
3434 else if (!strcmp(parser_tokval(parser), "break"))
3436 return parse_break_continue(parser, block, out, false);
3438 else if (!strcmp(parser_tokval(parser), "continue"))
3440 return parse_break_continue(parser, block, out, true);
3442 else if (!strcmp(parser_tokval(parser), "switch"))
3444 return parse_switch(parser, block, out);
3446 else if (!strcmp(parser_tokval(parser), "case") ||
3447 !strcmp(parser_tokval(parser), "default"))
3450 parseerror(parser, "unexpected 'case' label");
3455 else if (!strcmp(parser_tokval(parser), "goto"))
3457 return parse_goto(parser, out);
3459 else if (!strcmp(parser_tokval(parser), "typedef"))
3461 if (!parser_next(parser)) {
3462 parseerror(parser, "expected type definition after 'typedef'");
3465 return parse_typedef(parser);
3467 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3470 else if (parser->tok == '{')
3473 inner = parse_block(parser);
3476 *out = (ast_expression*)inner;
3479 else if (parser->tok == ':')
3483 if (!parser_next(parser)) {
3484 parseerror(parser, "expected label name");
3487 if (parser->tok != TOKEN_IDENT) {
3488 parseerror(parser, "label must be an identifier");
3491 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3493 if (!label->undefined) {
3494 parseerror(parser, "label `%s` already defined", label->name);
3497 label->undefined = false;
3500 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3501 vec_push(parser->labels, label);
3503 *out = (ast_expression*)label;
3504 if (!parser_next(parser)) {
3505 parseerror(parser, "parse error after label");
3508 for (i = 0; i < vec_size(parser->gotos); ++i) {
3509 if (!strcmp(parser->gotos[i]->name, label->name)) {
3510 ast_goto_set_label(parser->gotos[i], label);
3511 vec_remove(parser->gotos, i, 1);
3517 else if (parser->tok == ';')
3519 if (!parser_next(parser)) {
3520 parseerror(parser, "parse error after empty statement");
3527 lex_ctx_t ctx = parser_ctx(parser);
3528 ast_expression *exp = parse_expression(parser, false, false);
3532 if (!ast_side_effects(exp)) {
3533 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3540 static bool parse_enum(parser_t *parser)
3543 bool reverse = false;
3545 ast_value **values = NULL;
3546 ast_value *var = NULL;
3549 ast_expression *old;
3551 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3552 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3556 /* enumeration attributes (can add more later) */
3557 if (parser->tok == ':') {
3558 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3559 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3564 if (!strcmp(parser_tokval(parser), "flag")) {
3568 else if (!strcmp(parser_tokval(parser), "reverse")) {
3572 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3576 if (!parser_next(parser) || parser->tok != '{') {
3577 parseerror(parser, "expected `{` after enum attribute ");
3583 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3584 if (parser->tok == '}') {
3585 /* allow an empty enum */
3588 parseerror(parser, "expected identifier or `}`");
3592 old = parser_find_field(parser, parser_tokval(parser));
3594 old = parser_find_global(parser, parser_tokval(parser));
3596 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3597 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3601 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3602 vec_push(values, var);
3603 var->cvq = CV_CONST;
3604 var->hasvalue = true;
3606 /* for flagged enumerations increment in POTs of TWO */
3607 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3608 parser_addglobal(parser, var->name, (ast_expression*)var);
3610 if (!parser_next(parser)) {
3611 parseerror(parser, "expected `=`, `}` or comma after identifier");
3615 if (parser->tok == ',')
3617 if (parser->tok == '}')
3619 if (parser->tok != '=') {
3620 parseerror(parser, "expected `=`, `}` or comma after identifier");
3624 if (!parser_next(parser)) {
3625 parseerror(parser, "expected expression after `=`");
3629 /* We got a value! */
3630 old = parse_expression_leave(parser, true, false, false);
3631 asvalue = (ast_value*)old;
3632 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3633 compile_error(ast_ctx(var), "constant value or expression expected");
3636 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3638 if (parser->tok == '}')
3640 if (parser->tok != ',') {
3641 parseerror(parser, "expected `}` or comma after expression");
3646 /* patch them all (for reversed attribute) */
3649 for (i = 0; i < vec_size(values); i++)
3650 values[i]->constval.vfloat = vec_size(values) - i - 1;
3653 if (parser->tok != '}') {
3654 parseerror(parser, "internal error: breaking without `}`");
3658 if (!parser_next(parser) || parser->tok != ';') {
3659 parseerror(parser, "expected semicolon after enumeration");
3663 if (!parser_next(parser)) {
3664 parseerror(parser, "parse error after enumeration");
3676 static bool parse_block_into(parser_t *parser, ast_block *block)
3680 parser_enterblock(parser);
3682 if (!parser_next(parser)) { /* skip the '{' */
3683 parseerror(parser, "expected function body");
3687 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3689 ast_expression *expr = NULL;
3690 if (parser->tok == '}')
3693 if (!parse_statement(parser, block, &expr, false)) {
3694 /* parseerror(parser, "parse error"); */
3700 if (!ast_block_add_expr(block, expr)) {
3707 if (parser->tok != '}') {
3710 (void)parser_next(parser);
3714 if (!parser_leaveblock(parser))
3716 return retval && !!block;
3719 static ast_block* parse_block(parser_t *parser)
3722 block = ast_block_new(parser_ctx(parser));
3725 if (!parse_block_into(parser, block)) {
3726 ast_block_delete(block);
3732 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3734 if (parser->tok == '{') {
3735 *out = (ast_expression*)parse_block(parser);
3738 return parse_statement(parser, NULL, out, false);
3741 static bool create_vector_members(ast_value *var, ast_member **me)
3744 size_t len = strlen(var->name);
3746 for (i = 0; i < 3; ++i) {
3747 char *name = (char*)mem_a(len+3);
3748 memcpy(name, var->name, len);
3750 name[len+1] = 'x'+i;
3752 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3761 do { ast_member_delete(me[--i]); } while(i);
3765 static bool parse_function_body(parser_t *parser, ast_value *var)
3767 ast_block *block = NULL;
3772 ast_expression *framenum = NULL;
3773 ast_expression *nextthink = NULL;
3774 /* None of the following have to be deleted */
3775 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3776 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3777 bool has_frame_think;
3781 has_frame_think = false;
3782 old = parser->function;
3784 if (var->expression.flags & AST_FLAG_ALIAS) {
3785 parseerror(parser, "function aliases cannot have bodies");
3789 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3790 parseerror(parser, "gotos/labels leaking");
3794 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
3795 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3796 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
3802 if (parser->tok == '[') {
3803 /* got a frame definition: [ framenum, nextthink ]
3804 * this translates to:
3805 * self.frame = framenum;
3806 * self.nextthink = time + 0.1;
3807 * self.think = nextthink;
3811 fld_think = parser_find_field(parser, "think");
3812 fld_nextthink = parser_find_field(parser, "nextthink");
3813 fld_frame = parser_find_field(parser, "frame");
3814 if (!fld_think || !fld_nextthink || !fld_frame) {
3815 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3816 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3819 gbl_time = parser_find_global(parser, "time");
3820 gbl_self = parser_find_global(parser, "self");
3821 if (!gbl_time || !gbl_self) {
3822 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3823 parseerror(parser, "please declare the following globals: `time`, `self`");
3827 if (!parser_next(parser))
3830 framenum = parse_expression_leave(parser, true, false, false);
3832 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3835 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3836 ast_unref(framenum);
3837 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3841 if (parser->tok != ',') {
3842 ast_unref(framenum);
3843 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3844 parseerror(parser, "Got a %i\n", parser->tok);
3848 if (!parser_next(parser)) {
3849 ast_unref(framenum);
3853 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3855 /* qc allows the use of not-yet-declared functions here
3856 * - this automatically creates a prototype */
3857 ast_value *thinkfunc;
3858 ast_expression *functype = fld_think->next;
3860 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
3861 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
3862 ast_unref(framenum);
3863 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3866 ast_type_adopt(thinkfunc, functype);
3868 if (!parser_next(parser)) {
3869 ast_unref(framenum);
3870 ast_delete(thinkfunc);
3874 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3876 nextthink = (ast_expression*)thinkfunc;
3879 nextthink = parse_expression_leave(parser, true, false, false);
3881 ast_unref(framenum);
3882 parseerror(parser, "expected a think-function in [frame,think] notation");
3887 if (!ast_istype(nextthink, ast_value)) {
3888 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3892 if (retval && parser->tok != ']') {
3893 parseerror(parser, "expected closing `]` for [frame,think] notation");
3897 if (retval && !parser_next(parser)) {
3901 if (retval && parser->tok != '{') {
3902 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3907 ast_unref(nextthink);
3908 ast_unref(framenum);
3912 has_frame_think = true;
3915 block = ast_block_new(parser_ctx(parser));
3917 parseerror(parser, "failed to allocate block");
3918 if (has_frame_think) {
3919 ast_unref(nextthink);
3920 ast_unref(framenum);
3925 if (has_frame_think) {
3927 ast_expression *self_frame;
3928 ast_expression *self_nextthink;
3929 ast_expression *self_think;
3930 ast_expression *time_plus_1;
3931 ast_store *store_frame;
3932 ast_store *store_nextthink;
3933 ast_store *store_think;
3935 ctx = parser_ctx(parser);
3936 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3937 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3938 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3940 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3941 gbl_time, (ast_expression*)fold_constgen_float(parser->fold, 0.1f));
3943 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3944 if (self_frame) ast_delete(self_frame);
3945 if (self_nextthink) ast_delete(self_nextthink);
3946 if (self_think) ast_delete(self_think);
3947 if (time_plus_1) ast_delete(time_plus_1);
3953 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3954 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3955 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3958 ast_delete(self_frame);
3961 if (!store_nextthink) {
3962 ast_delete(self_nextthink);
3966 ast_delete(self_think);
3970 if (store_frame) ast_delete(store_frame);
3971 if (store_nextthink) ast_delete(store_nextthink);
3972 if (store_think) ast_delete(store_think);
3975 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3976 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3977 !ast_block_add_expr(block, (ast_expression*)store_think))
3984 parseerror(parser, "failed to generate code for [frame,think]");
3985 ast_unref(nextthink);
3986 ast_unref(framenum);
3992 if (var->hasvalue) {
3993 if (!(var->expression.flags & AST_FLAG_ACCUMULATE)) {
3994 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
3995 ast_block_delete(block);
3998 func = var->constval.vfunc;
4001 parseerror(parser, "internal error: NULL function: `%s`", var->name);
4002 ast_block_delete(block);
4006 func = ast_function_new(ast_ctx(var), var->name, var);
4009 parseerror(parser, "failed to allocate function for `%s`", var->name);
4010 ast_block_delete(block);
4013 vec_push(parser->functions, func);
4016 parser_enterblock(parser);
4018 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
4020 ast_value *param = var->expression.params[parami];
4023 if (param->expression.vtype != TYPE_VECTOR &&
4024 (param->expression.vtype != TYPE_FIELD ||
4025 param->expression.next->vtype != TYPE_VECTOR))
4030 if (!create_vector_members(param, me)) {
4031 ast_block_delete(block);
4035 for (e = 0; e < 3; ++e) {
4036 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4037 ast_block_collect(block, (ast_expression*)me[e]);
4041 if (var->argcounter && !func->argc) {
4042 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4043 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4047 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC && !func->varargs) {
4049 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4050 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4051 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4052 varargs->expression.count = 0;
4053 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4054 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4055 ast_delete(varargs);
4056 ast_block_delete(block);
4059 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4060 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4061 ast_delete(varargs);
4062 ast_block_delete(block);
4065 func->varargs = varargs;
4066 func->fixedparams = (ast_value*)fold_constgen_float(parser->fold, vec_size(var->expression.params));
4069 parser->function = func;
4070 if (!parse_block_into(parser, block)) {
4071 ast_block_delete(block);
4075 vec_push(func->blocks, block);
4077 parser->function = old;
4078 if (!parser_leaveblock(parser))
4080 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4081 parseerror(parser, "internal error: local scopes left");
4085 if (parser->tok == ';')
4086 return parser_next(parser);
4087 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4088 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4092 (void)!parser_leaveblock(parser);
4093 vec_pop(parser->functions);
4094 ast_function_delete(func);
4095 var->constval.vfunc = NULL;
4098 parser->function = old;
4102 static ast_expression *array_accessor_split(
4107 ast_expression *left,
4108 ast_expression *right
4114 lex_ctx_t ctx = ast_ctx(array);
4116 if (!left || !right) {
4117 if (left) ast_delete(left);
4118 if (right) ast_delete(right);
4122 cmp = ast_binary_new(ctx, INSTR_LT,
4123 (ast_expression*)index,
4124 (ast_expression*)fold_constgen_float(parser->fold, middle));
4128 parseerror(parser, "internal error: failed to create comparison for array setter");
4132 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4134 ast_delete(cmp); /* will delete left and right */
4135 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4139 return (ast_expression*)ifthen;
4142 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4144 lex_ctx_t ctx = ast_ctx(array);
4146 if (from+1 == afterend) {
4147 /* set this value */
4150 ast_array_index *subscript;
4152 int assignop = type_store_instr[value->expression.vtype];
4154 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4155 assignop = INSTR_STORE_V;
4157 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4161 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4163 ast_delete(subscript);
4167 block = ast_block_new(ctx);
4173 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4178 ret = ast_return_new(ctx, NULL);
4184 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4189 return (ast_expression*)block;
4191 ast_expression *left, *right;
4192 size_t diff = afterend - from;
4193 size_t middle = from + diff/2;
4194 left = array_setter_node(parser, array, index, value, from, middle);
4195 right = array_setter_node(parser, array, index, value, middle, afterend);
4196 return array_accessor_split(parser, array, index, middle, left, right);
4200 static ast_expression *array_field_setter_node(
4209 lex_ctx_t ctx = ast_ctx(array);
4211 if (from+1 == afterend) {
4212 /* set this value */
4215 ast_entfield *entfield;
4216 ast_array_index *subscript;
4218 int assignop = type_storep_instr[value->expression.vtype];
4220 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4221 assignop = INSTR_STOREP_V;
4223 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4227 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4228 subscript->expression.vtype = TYPE_FIELD;
4230 entfield = ast_entfield_new_force(ctx,
4231 (ast_expression*)entity,
4232 (ast_expression*)subscript,
4233 (ast_expression*)subscript);
4235 ast_delete(subscript);
4239 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4241 ast_delete(entfield);
4245 block = ast_block_new(ctx);
4251 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4256 ret = ast_return_new(ctx, NULL);
4262 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4267 return (ast_expression*)block;
4269 ast_expression *left, *right;
4270 size_t diff = afterend - from;
4271 size_t middle = from + diff/2;
4272 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4273 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4274 return array_accessor_split(parser, array, index, middle, left, right);
4278 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4280 lex_ctx_t ctx = ast_ctx(array);
4282 if (from+1 == afterend) {
4284 ast_array_index *subscript;
4286 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4290 ret = ast_return_new(ctx, (ast_expression*)subscript);
4292 ast_delete(subscript);
4296 return (ast_expression*)ret;
4298 ast_expression *left, *right;
4299 size_t diff = afterend - from;
4300 size_t middle = from + diff/2;
4301 left = array_getter_node(parser, array, index, from, middle);
4302 right = array_getter_node(parser, array, index, middle, afterend);
4303 return array_accessor_split(parser, array, index, middle, left, right);
4307 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4309 ast_function *func = NULL;
4310 ast_value *fval = NULL;
4311 ast_block *body = NULL;
4313 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4315 parseerror(parser, "failed to create accessor function value");
4319 func = ast_function_new(ast_ctx(array), funcname, fval);
4322 parseerror(parser, "failed to create accessor function node");
4326 body = ast_block_new(ast_ctx(array));
4328 parseerror(parser, "failed to create block for array accessor");
4334 vec_push(func->blocks, body);
4337 vec_push(parser->accessors, fval);
4342 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4344 ast_value *index = NULL;
4345 ast_value *value = NULL;
4349 if (!ast_istype(array->expression.next, ast_value)) {
4350 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4354 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4356 func = fval->constval.vfunc;
4357 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4359 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4360 value = ast_value_copy((ast_value*)array->expression.next);
4362 if (!index || !value) {
4363 parseerror(parser, "failed to create locals for array accessor");
4366 (void)!ast_value_set_name(value, "value"); /* not important */
4367 vec_push(fval->expression.params, index);
4368 vec_push(fval->expression.params, value);
4370 array->setter = fval;
4373 if (index) ast_delete(index);
4374 if (value) ast_delete(value);
4380 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4382 ast_expression *root = NULL;
4383 root = array_setter_node(parser, array,
4384 array->setter->expression.params[0],
4385 array->setter->expression.params[1],
4386 0, array->expression.count);
4388 parseerror(parser, "failed to build accessor search tree");
4391 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4398 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4400 if (!parser_create_array_setter_proto(parser, array, funcname))
4402 return parser_create_array_setter_impl(parser, array);
4405 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4407 ast_expression *root = NULL;
4408 ast_value *entity = NULL;
4409 ast_value *index = NULL;
4410 ast_value *value = NULL;
4414 if (!ast_istype(array->expression.next, ast_value)) {
4415 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4419 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4421 func = fval->constval.vfunc;
4422 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4424 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4425 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4426 value = ast_value_copy((ast_value*)array->expression.next);
4427 if (!entity || !index || !value) {
4428 parseerror(parser, "failed to create locals for array accessor");
4431 (void)!ast_value_set_name(value, "value"); /* not important */
4432 vec_push(fval->expression.params, entity);
4433 vec_push(fval->expression.params, index);
4434 vec_push(fval->expression.params, value);
4436 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4438 parseerror(parser, "failed to build accessor search tree");
4442 array->setter = fval;
4443 return ast_block_add_expr(func->blocks[0], root);
4445 if (entity) ast_delete(entity);
4446 if (index) ast_delete(index);
4447 if (value) ast_delete(value);
4448 if (root) ast_delete(root);
4454 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4456 ast_value *index = NULL;
4460 /* NOTE: checking array->expression.next rather than elemtype since
4461 * for fields elemtype is a temporary fieldtype.
4463 if (!ast_istype(array->expression.next, ast_value)) {
4464 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4468 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4470 func = fval->constval.vfunc;
4471 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4473 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4476 parseerror(parser, "failed to create locals for array accessor");
4479 vec_push(fval->expression.params, index);
4481 array->getter = fval;
4484 if (index) ast_delete(index);
4490 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4492 ast_expression *root = NULL;
4494 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4496 parseerror(parser, "failed to build accessor search tree");
4499 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4506 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4508 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4510 return parser_create_array_getter_impl(parser, array);
4513 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4521 bool variadic = false;
4522 ast_value *varparam = NULL;
4523 char *argcounter = NULL;
4525 ctx = parser_ctx(parser);
4527 /* for the sake of less code we parse-in in this function */
4528 if (!parser_next(parser)) {
4530 parseerror(parser, "expected parameter list");
4536 /* parse variables until we hit a closing paren */
4537 while (parser->tok != ')') {
4538 bool is_varargs = false;
4541 /* there must be commas between them */
4542 if (parser->tok != ',') {
4543 parseerror(parser, "expected comma or end of parameter list");
4546 if (!parser_next(parser)) {
4547 parseerror(parser, "expected parameter");
4553 param = parse_typename(parser, NULL, NULL, &is_varargs);
4554 if (!param && !is_varargs)
4557 /* '...' indicates a varargs function */
4559 if (parser->tok != ')' && parser->tok != TOKEN_IDENT) {
4560 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4563 if (parser->tok == TOKEN_IDENT) {
4564 argcounter = util_strdup(parser_tokval(parser));
4565 if (!parser_next(parser) || parser->tok != ')') {
4566 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4571 vec_push(params, param);
4572 if (param->expression.vtype >= TYPE_VARIANT) {
4573 char tname[1024]; /* typename is reserved in C++ */
4574 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4575 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4578 /* type-restricted varargs */
4579 if (parser->tok == TOKEN_DOTS) {
4581 varparam = vec_last(params);
4583 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4584 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4587 if (parser->tok == TOKEN_IDENT) {
4588 argcounter = util_strdup(parser_tokval(parser));
4589 if (!parser_next(parser) || parser->tok != ')') {
4590 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4598 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4602 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4603 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4606 if (!parser_next(parser)) {
4607 parseerror(parser, "parse error after typename");
4611 /* now turn 'var' into a function type */
4612 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4613 fval->expression.next = (ast_expression*)var;
4615 fval->expression.flags |= AST_FLAG_VARIADIC;
4618 var->expression.params = params;
4619 var->expression.varparam = (ast_expression*)varparam;
4620 var->argcounter = argcounter;
4629 ast_delete(varparam);
4631 for (i = 0; i < vec_size(params); ++i)
4632 ast_delete(params[i]);
4637 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4639 ast_expression *cexp;
4640 ast_value *cval, *tmp;
4643 ctx = parser_ctx(parser);
4645 if (!parser_next(parser)) {
4647 parseerror(parser, "expected array-size");
4651 if (parser->tok != ']') {
4652 cexp = parse_expression_leave(parser, true, false, false);
4654 if (!cexp || !ast_istype(cexp, ast_value)) {
4658 parseerror(parser, "expected array-size as constant positive integer");
4661 cval = (ast_value*)cexp;
4668 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4669 tmp->expression.next = (ast_expression*)var;
4673 if (cval->expression.vtype == TYPE_INTEGER)
4674 tmp->expression.count = cval->constval.vint;
4675 else if (cval->expression.vtype == TYPE_FLOAT)
4676 tmp->expression.count = cval->constval.vfloat;
4680 parseerror(parser, "array-size must be a positive integer constant");
4686 var->expression.count = -1;
4687 var->expression.flags |= AST_FLAG_ARRAY_INIT;
4690 if (parser->tok != ']') {
4692 parseerror(parser, "expected ']' after array-size");
4695 if (!parser_next(parser)) {
4697 parseerror(parser, "error after parsing array size");
4703 /* Parse a complete typename.
4704 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4705 * but when parsing variables separated by comma
4706 * 'storebase' should point to where the base-type should be kept.
4707 * The base type makes up every bit of type information which comes *before* the
4710 * NOTE: The value must either be named, have a NULL name, or a name starting
4711 * with '<'. In the first case, this will be the actual variable or type
4712 * name, in the other cases it is assumed that the name will appear
4713 * later, and an error is generated otherwise.
4715 * The following will be parsed in its entirety:
4717 * The 'basetype' in this case is 'void()'
4718 * and if there's a comma after it, say:
4720 * then the type-information 'void()' can be stored in 'storebase'
4722 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef, bool *is_vararg)
4724 ast_value *var, *tmp;
4727 const char *name = NULL;
4728 bool isfield = false;
4729 bool wasarray = false;
4730 size_t morefields = 0;
4732 bool vararg = (parser->tok == TOKEN_DOTS);
4734 ctx = parser_ctx(parser);
4736 /* types may start with a dot */
4737 if (parser->tok == '.' || parser->tok == TOKEN_DOTS) {
4739 if (parser->tok == TOKEN_DOTS)
4741 /* if we parsed a dot we need a typename now */
4742 if (!parser_next(parser)) {
4743 parseerror(parser, "expected typename for field definition");
4747 /* Further dots are handled seperately because they won't be part of the
4751 if (parser->tok == '.')
4753 else if (parser->tok == TOKEN_DOTS)
4758 if (!parser_next(parser)) {
4759 parseerror(parser, "expected typename for field definition");
4764 if (parser->tok == TOKEN_IDENT)
4765 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4766 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4767 if (vararg && is_vararg) {
4771 parseerror(parser, "expected typename");
4775 /* generate the basic type value */
4776 if (cached_typedef) {
4777 var = ast_value_copy(cached_typedef);
4778 ast_value_set_name(var, "<type(from_def)>");
4780 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4782 for (; morefields; --morefields) {
4783 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4784 tmp->expression.next = (ast_expression*)var;
4788 /* do not yet turn into a field - remember:
4789 * .void() foo; is a field too
4790 * .void()() foo; is a function
4794 if (!parser_next(parser)) {
4796 parseerror(parser, "parse error after typename");
4800 /* an opening paren now starts the parameter-list of a function
4801 * this is where original-QC has parameter lists.
4802 * We allow a single parameter list here.
4803 * Much like fteqcc we don't allow `float()() x`
4805 if (parser->tok == '(') {
4806 var = parse_parameter_list(parser, var);
4811 /* store the base if requested */
4813 *storebase = ast_value_copy(var);
4815 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4816 tmp->expression.next = (ast_expression*)*storebase;
4821 /* there may be a name now */
4822 if (parser->tok == TOKEN_IDENT || parser->tok == TOKEN_KEYWORD) {
4823 if (!strcmp(parser_tokval(parser), "break"))
4824 (void)!parsewarning(parser, WARN_BREAKDEF, "break definition ignored (suggest removing it)");
4825 else if (parser->tok == TOKEN_KEYWORD)
4828 name = util_strdup(parser_tokval(parser));
4831 if (!parser_next(parser)) {
4834 parseerror(parser, "error after variable or field declaration");
4840 /* now this may be an array */
4841 if (parser->tok == '[') {
4843 var = parse_arraysize(parser, var);
4845 if (name) mem_d(name);
4850 /* This is the point where we can turn it into a field */
4852 /* turn it into a field if desired */
4853 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4854 tmp->expression.next = (ast_expression*)var;
4858 /* now there may be function parens again */
4859 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4860 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4861 if (parser->tok == '(' && wasarray)
4862 parseerror(parser, "arrays as part of a return type is not supported");
4863 while (parser->tok == '(') {
4864 var = parse_parameter_list(parser, var);
4866 if (name) mem_d(name);
4871 /* finally name it */
4873 if (!ast_value_set_name(var, name)) {
4876 parseerror(parser, "internal error: failed to set name");
4879 /* free the name, ast_value_set_name duplicates */
4886 static bool parse_typedef(parser_t *parser)
4888 ast_value *typevar, *oldtype;
4889 ast_expression *old;
4891 typevar = parse_typename(parser, NULL, NULL, NULL);
4896 /* while parsing types, the ast_value's get named '<something>' */
4897 if (!typevar->name || typevar->name[0] == '<') {
4898 parseerror(parser, "missing name in typedef");
4899 ast_delete(typevar);
4903 if ( (old = parser_find_var(parser, typevar->name)) ) {
4904 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4905 " -> `%s` has been declared here: %s:%i",
4906 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4907 ast_delete(typevar);
4911 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4912 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4913 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4914 ast_delete(typevar);
4918 vec_push(parser->_typedefs, typevar);
4919 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4921 if (parser->tok != ';') {
4922 parseerror(parser, "expected semicolon after typedef");
4925 if (!parser_next(parser)) {
4926 parseerror(parser, "parse error after typedef");
4933 static const char *cvq_to_str(int cvq) {
4935 case CV_NONE: return "none";
4936 case CV_VAR: return "`var`";
4937 case CV_CONST: return "`const`";
4938 default: return "<INVALID>";
4942 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4945 if (proto->cvq != var->cvq) {
4946 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4947 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4948 parser->tok == '='))
4950 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4951 "`%s` declared with different qualifiers: %s\n"
4952 " -> previous declaration here: %s:%i uses %s",
4953 var->name, cvq_to_str(var->cvq),
4954 ast_ctx(proto).file, ast_ctx(proto).line,
4955 cvq_to_str(proto->cvq));
4958 av = (var ->expression.flags & AST_FLAG_NORETURN);
4959 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4961 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4962 "`%s` declared with different attributes%s\n"
4963 " -> previous declaration here: %s:%i",
4964 var->name, (av ? ": noreturn" : ""),
4965 ast_ctx(proto).file, ast_ctx(proto).line,
4966 (ao ? ": noreturn" : ""));
4971 static bool create_array_accessors(parser_t *parser, ast_value *var)
4974 util_snprintf(name, sizeof(name), "%s##SET", var->name);
4975 if (!parser_create_array_setter(parser, var, name))
4977 util_snprintf(name, sizeof(name), "%s##GET", var->name);
4978 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4983 static bool parse_array(parser_t *parser, ast_value *array)
4986 if (array->initlist) {
4987 parseerror(parser, "array already initialized elsewhere");
4990 if (!parser_next(parser)) {
4991 parseerror(parser, "parse error in array initializer");
4995 while (parser->tok != '}') {
4996 ast_value *v = (ast_value*)parse_expression_leave(parser, true, false, false);
4999 if (!ast_istype(v, ast_value) || !v->hasvalue || v->cvq != CV_CONST) {
5001 parseerror(parser, "initializing element must be a compile time constant");
5004 vec_push(array->initlist, v->constval);
5005 if (v->expression.vtype == TYPE_STRING) {
5006 array->initlist[i].vstring = util_strdupe(array->initlist[i].vstring);
5010 if (parser->tok == '}')
5012 if (parser->tok != ',' || !parser_next(parser)) {
5013 parseerror(parser, "expected comma or '}' in element list");
5017 if (!parser_next(parser) || parser->tok != ';') {
5018 parseerror(parser, "expected semicolon after initializer, got %s");
5022 if (!parser_next(parser)) {
5023 parseerror(parser, "parse error after initializer");
5028 if (array->expression.flags & AST_FLAG_ARRAY_INIT) {
5029 if (array->expression.count != (size_t)-1) {
5030 parseerror(parser, "array `%s' has already been initialized with %u elements",
5031 array->name, (unsigned)array->expression.count);
5033 array->expression.count = vec_size(array->initlist);
5034 if (!create_array_accessors(parser, array))
5040 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)
5044 ast_expression *old;
5048 ast_value *basetype = NULL;
5050 bool isparam = false;
5051 bool isvector = false;
5052 bool cleanvar = true;
5053 bool wasarray = false;
5055 ast_member *me[3] = { NULL, NULL, NULL };
5057 if (!localblock && is_static)
5058 parseerror(parser, "`static` qualifier is not supported in global scope");
5060 /* get the first complete variable */
5061 var = parse_typename(parser, &basetype, cached_typedef, NULL);
5064 ast_delete(basetype);
5068 /* while parsing types, the ast_value's get named '<something>' */
5069 if (!var->name || var->name[0] == '<') {
5070 parseerror(parser, "declaration does not declare anything");
5072 ast_delete(basetype);
5080 /* Part 0: finish the type */
5081 if (parser->tok == '(') {
5082 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5083 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5084 var = parse_parameter_list(parser, var);
5090 /* we only allow 1-dimensional arrays */
5091 if (parser->tok == '[') {
5093 var = parse_arraysize(parser, var);
5099 if (parser->tok == '(' && wasarray) {
5100 parseerror(parser, "arrays as part of a return type is not supported");
5101 /* we'll still parse the type completely for now */
5103 /* for functions returning functions */
5104 while (parser->tok == '(') {
5105 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5106 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5107 var = parse_parameter_list(parser, var);
5114 var->cvq = qualifier;
5115 var->expression.flags |= qflags;
5118 * store the vstring back to var for alias and
5119 * deprecation messages.
5121 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5122 var->expression.flags & AST_FLAG_ALIAS)
5123 var->desc = vstring;
5125 if (parser_find_global(parser, var->name) && var->expression.flags & AST_FLAG_ALIAS) {
5126 parseerror(parser, "function aliases cannot be forward declared");
5133 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5134 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5135 * is then filled with the previous definition and the parameter-names replaced.
5137 if (!strcmp(var->name, "nil")) {
5138 if (OPTS_FLAG(UNTYPED_NIL)) {
5139 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5140 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5142 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5145 /* Deal with end_sys_ vars */
5147 if (!strcmp(var->name, "end_sys_globals")) {
5149 parser->crc_globals = vec_size(parser->globals);
5152 else if (!strcmp(var->name, "end_sys_fields")) {
5154 parser->crc_fields = vec_size(parser->fields);
5157 if (was_end && var->expression.vtype == TYPE_FIELD) {
5158 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5159 "global '%s' hint should not be a field",
5160 parser_tokval(parser)))
5167 if (!nofields && var->expression.vtype == TYPE_FIELD)
5169 /* deal with field declarations */
5170 old = parser_find_field(parser, var->name);
5172 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5173 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5182 parseerror(parser, "field `%s` already declared here: %s:%i",
5183 var->name, ast_ctx(old).file, ast_ctx(old).line);
5188 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5189 (old = parser_find_global(parser, var->name)))
5191 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5192 parseerror(parser, "field `%s` already declared here: %s:%i",
5193 var->name, ast_ctx(old).file, ast_ctx(old).line);
5200 /* deal with other globals */
5201 old = parser_find_global(parser, var->name);
5202 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5204 /* This is a function which had a prototype */
5205 if (!ast_istype(old, ast_value)) {
5206 parseerror(parser, "internal error: prototype is not an ast_value");
5210 proto = (ast_value*)old;
5211 proto->desc = var->desc;
5212 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5213 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5215 ast_ctx(proto).file, ast_ctx(proto).line);
5219 /* we need the new parameter-names */
5220 for (i = 0; i < vec_size(proto->expression.params); ++i)
5221 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5222 if (!parser_check_qualifiers(parser, var, proto)) {
5229 proto->expression.flags |= var->expression.flags;
5237 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5238 "global `%s` already declared here: %s:%i",
5239 var->name, ast_ctx(old).file, ast_ctx(old).line))
5244 proto = (ast_value*)old;
5245 if (!ast_istype(old, ast_value)) {
5246 parseerror(parser, "internal error: not an ast_value");
5251 if (!parser_check_qualifiers(parser, var, proto)) {
5256 proto->expression.flags |= var->expression.flags;
5260 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5261 (old = parser_find_field(parser, var->name)))
5263 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5264 parseerror(parser, "global `%s` already declared here: %s:%i",
5265 var->name, ast_ctx(old).file, ast_ctx(old).line);
5272 else /* it's not a global */
5274 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5275 if (old && !isparam) {
5276 parseerror(parser, "local `%s` already declared here: %s:%i",
5277 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5281 /* doing this here as the above is just for a single scope */
5282 old = parser_find_local(parser, var->name, 0, &isparam);
5283 if (old && isparam) {
5284 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5285 "local `%s` is shadowing a parameter", var->name))
5287 parseerror(parser, "local `%s` already declared here: %s:%i",
5288 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5292 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5294 if (ast_istype(old, ast_value))
5295 var = proto = (ast_value*)old;
5304 /* in a noref section we simply bump the usecount */
5305 if (noref || parser->noref)
5309 * Create the global/local, and deal with vector types.
5312 if (var->expression.vtype == TYPE_VECTOR)
5314 else if (var->expression.vtype == TYPE_FIELD &&
5315 var->expression.next->vtype == TYPE_VECTOR)
5319 if (!create_vector_members(var, me)) {
5326 /* deal with global variables, fields, functions */
5327 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5328 var->isfield = true;
5329 vec_push(parser->fields, (ast_expression*)var);
5330 util_htset(parser->htfields, var->name, var);
5332 for (i = 0; i < 3; ++i) {
5333 vec_push(parser->fields, (ast_expression*)me[i]);
5334 util_htset(parser->htfields, me[i]->name, me[i]);
5339 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5340 parser_addglobal(parser, var->name, (ast_expression*)var);
5342 for (i = 0; i < 3; ++i) {
5343 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5347 ast_expression *find = parser_find_global(parser, var->desc);
5350 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5354 if (!ast_compare_type((ast_expression*)var, find)) {
5358 ast_type_to_string(find, ty1, sizeof(ty1));
5359 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5361 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5368 * add alias to aliases table and to corrector
5369 * so corrections can apply for aliases as well.
5371 util_htset(parser->aliases, var->name, find);
5374 * add to corrector so corrections can work
5375 * even for aliases too.
5378 vec_last(parser->correct_variables),
5379 &vec_last(parser->correct_variables_score),
5383 /* generate aliases for vector components */
5387 util_asprintf(&buffer[0], "%s_x", var->desc);
5388 util_asprintf(&buffer[1], "%s_y", var->desc);
5389 util_asprintf(&buffer[2], "%s_z", var->desc);
5391 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5392 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5393 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5400 * add to corrector so corrections can work
5401 * even for aliases too.
5404 vec_last(parser->correct_variables),
5405 &vec_last(parser->correct_variables_score),
5409 vec_last(parser->correct_variables),
5410 &vec_last(parser->correct_variables_score),
5414 vec_last(parser->correct_variables),
5415 &vec_last(parser->correct_variables_score),
5423 /* a static adds itself to be generated like any other global
5424 * but is added to the local namespace instead
5426 char *defname = NULL;
5427 size_t prefix_len, ln;
5429 ln = strlen(parser->function->name);
5430 vec_append(defname, ln, parser->function->name);
5432 vec_append(defname, 2, "::");
5433 /* remember the length up to here */
5434 prefix_len = vec_size(defname);
5436 /* Add it to the local scope */
5437 util_htset(vec_last(parser->variables), var->name, (void*)var);
5441 vec_last(parser->correct_variables),
5442 &vec_last(parser->correct_variables_score),
5446 /* now rename the global */
5447 ln = strlen(var->name);
5448 vec_append(defname, ln, var->name);
5449 ast_value_set_name(var, defname);
5451 /* push it to the to-be-generated globals */
5452 vec_push(parser->globals, (ast_expression*)var);
5454 /* same game for the vector members */
5456 for (i = 0; i < 3; ++i) {
5457 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5461 vec_last(parser->correct_variables),
5462 &vec_last(parser->correct_variables_score),
5466 vec_shrinkto(defname, prefix_len);
5467 ln = strlen(me[i]->name);
5468 vec_append(defname, ln, me[i]->name);
5469 ast_member_set_name(me[i], defname);
5471 vec_push(parser->globals, (ast_expression*)me[i]);
5476 vec_push(localblock->locals, var);
5477 parser_addlocal(parser, var->name, (ast_expression*)var);
5479 for (i = 0; i < 3; ++i) {
5480 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5481 ast_block_collect(localblock, (ast_expression*)me[i]);
5487 me[0] = me[1] = me[2] = NULL;
5492 if (var->expression.vtype == TYPE_ARRAY) {
5493 if (var->expression.count != (size_t)-1) {
5494 if (!create_array_accessors(parser, var))
5498 else if (!localblock && !nofields &&
5499 var->expression.vtype == TYPE_FIELD &&
5500 var->expression.next->vtype == TYPE_ARRAY)
5503 ast_expression *telem;
5505 ast_value *array = (ast_value*)var->expression.next;
5507 if (!ast_istype(var->expression.next, ast_value)) {
5508 parseerror(parser, "internal error: field element type must be an ast_value");
5512 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5513 if (!parser_create_array_field_setter(parser, array, name))
5516 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5517 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5518 tfield->expression.next = telem;
5519 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5520 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5528 if (parser->tok == ';') {
5529 ast_delete(basetype);
5530 if (!parser_next(parser)) {
5531 parseerror(parser, "error after variable declaration");
5537 if (parser->tok == ',')
5541 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5544 parseerror(parser, "missing comma or semicolon while parsing variables");
5548 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5549 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5550 "initializing expression turns variable `%s` into a constant in this standard",
5557 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5558 if (parser->tok != '=') {
5559 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5563 if (!parser_next(parser)) {
5564 parseerror(parser, "error parsing initializer");
5568 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5569 parseerror(parser, "expected '=' before function body in this standard");
5572 if (parser->tok == '#') {
5573 ast_function *func = NULL;
5574 ast_value *number = NULL;
5580 parseerror(parser, "cannot declare builtins within functions");
5583 if (var->expression.vtype != TYPE_FUNCTION) {
5584 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5587 if (!parser_next(parser)) {
5588 parseerror(parser, "expected builtin number");
5592 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5593 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5595 parseerror(parser, "builtin number expected");
5598 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5601 parseerror(parser, "builtin number must be a compile time constant");
5604 if (number->expression.vtype == TYPE_INTEGER)
5605 builtin_num = number->constval.vint;
5606 else if (number->expression.vtype == TYPE_FLOAT)
5607 builtin_num = number->constval.vfloat;
5610 parseerror(parser, "builtin number must be an integer constant");
5615 fractional = modff(builtin_num, &integral);
5616 if (builtin_num < 0 || fractional != 0) {
5617 parseerror(parser, "builtin number must be an integer greater than zero");
5621 /* we only want the integral part anyways */
5622 builtin_num = integral;
5623 } else if (parser->tok == TOKEN_INTCONST) {
5624 builtin_num = parser_token(parser)->constval.i;
5626 parseerror(parser, "builtin number must be a compile time constant");
5630 if (var->hasvalue) {
5631 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5632 "builtin `%s` has already been defined\n"
5633 " -> previous declaration here: %s:%i",
5634 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5638 func = ast_function_new(ast_ctx(var), var->name, var);
5640 parseerror(parser, "failed to allocate function for `%s`", var->name);
5643 vec_push(parser->functions, func);
5645 func->builtin = -builtin_num-1;
5648 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5649 ? (parser->tok != ',' && parser->tok != ';')
5650 : (!parser_next(parser)))
5652 parseerror(parser, "expected comma or semicolon");
5654 ast_function_delete(func);
5655 var->constval.vfunc = NULL;
5659 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
5662 /* Note that fteqcc and most others don't even *have*
5663 * local arrays, so this is not a high priority.
5665 parseerror(parser, "TODO: initializers for local arrays");
5669 var->hasvalue = true;
5670 if (!parse_array(parser, var))
5673 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
5676 parseerror(parser, "cannot declare functions within functions");
5681 ast_ctx(proto) = parser_ctx(parser);
5683 if (!parse_function_body(parser, var))
5685 ast_delete(basetype);
5686 for (i = 0; i < vec_size(parser->gotos); ++i)
5687 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5688 vec_free(parser->gotos);
5689 vec_free(parser->labels);
5692 ast_expression *cexp;
5695 cexp = parse_expression_leave(parser, true, false, false);
5700 cval = (ast_value*)cexp;
5701 if (cval != parser->nil &&
5702 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5705 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5709 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5710 qualifier != CV_VAR)
5712 var->cvq = CV_CONST;
5714 if (cval == parser->nil)
5715 var->expression.flags |= AST_FLAG_INITIALIZED;
5718 var->hasvalue = true;
5719 if (cval->expression.vtype == TYPE_STRING)
5720 var->constval.vstring = parser_strdup(cval->constval.vstring);
5721 else if (cval->expression.vtype == TYPE_FIELD)
5722 var->constval.vfield = cval;
5724 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5730 shunt sy = { NULL, NULL, NULL, NULL };
5733 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5734 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5735 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5736 if (!parser_sy_apply_operator(parser, &sy))
5739 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5740 parseerror(parser, "internal error: leaked operands");
5741 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5752 if (parser->tok == ',') {
5753 if (!parser_next(parser)) {
5754 parseerror(parser, "expected another variable");
5758 if (parser->tok != TOKEN_IDENT) {
5759 parseerror(parser, "expected another variable");
5762 var = ast_value_copy(basetype);
5764 ast_value_set_name(var, parser_tokval(parser));
5765 if (!parser_next(parser)) {
5766 parseerror(parser, "error parsing variable declaration");
5772 if (parser->tok != ';') {
5773 parseerror(parser, "missing semicolon after variables");
5777 if (!parser_next(parser)) {
5778 parseerror(parser, "parse error after variable declaration");
5782 ast_delete(basetype);
5786 if (cleanvar && var)
5788 ast_delete(basetype);
5792 ast_delete(basetype);
5793 if (cleanvar && var)
5795 if (me[0]) ast_member_delete(me[0]);
5796 if (me[1]) ast_member_delete(me[1]);
5797 if (me[2]) ast_member_delete(me[2]);
5801 static bool parser_global_statement(parser_t *parser)
5805 bool is_static = false;
5806 uint32_t qflags = 0;
5807 ast_value *istype = NULL;
5808 char *vstring = NULL;
5810 if (parser->tok == TOKEN_IDENT)
5811 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5813 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.' || parser->tok == TOKEN_DOTS)
5815 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5817 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5819 if (cvq == CV_WRONG)
5821 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5823 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5825 return parse_enum(parser);
5827 else if (parser->tok == TOKEN_KEYWORD)
5829 if (!strcmp(parser_tokval(parser), "typedef")) {
5830 if (!parser_next(parser)) {
5831 parseerror(parser, "expected type definition after 'typedef'");
5834 return parse_typedef(parser);
5836 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5839 else if (parser->tok == '#')
5841 return parse_pragma(parser);
5843 else if (parser->tok == '$')
5845 if (!parser_next(parser)) {
5846 parseerror(parser, "parse error");
5852 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
5858 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5860 return util_crc16(old, str, strlen(str));
5863 static void progdefs_crc_file(const char *str)
5865 /* write to progdefs.h here */
5869 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5871 old = progdefs_crc_sum(old, str);
5872 progdefs_crc_file(str);
5876 static void generate_checksum(parser_t *parser, ir_builder *ir)
5878 uint16_t crc = 0xFFFF;
5882 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5883 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5885 progdefs_crc_file("\tint\tpad;\n");
5886 progdefs_crc_file("\tint\tofs_return[3];\n");
5887 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5888 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5889 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5890 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5891 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5892 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5893 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5894 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5896 for (i = 0; i < parser->crc_globals; ++i) {
5897 if (!ast_istype(parser->globals[i], ast_value))
5899 value = (ast_value*)(parser->globals[i]);
5900 switch (value->expression.vtype) {
5901 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5902 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5903 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5904 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5906 crc = progdefs_crc_both(crc, "\tint\t");
5909 crc = progdefs_crc_both(crc, value->name);
5910 crc = progdefs_crc_both(crc, ";\n");
5912 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5913 for (i = 0; i < parser->crc_fields; ++i) {
5914 if (!ast_istype(parser->fields[i], ast_value))
5916 value = (ast_value*)(parser->fields[i]);
5917 switch (value->expression.next->vtype) {
5918 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5919 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5920 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5921 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5923 crc = progdefs_crc_both(crc, "\tint\t");
5926 crc = progdefs_crc_both(crc, value->name);
5927 crc = progdefs_crc_both(crc, ";\n");
5929 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5930 ir->code->crc = crc;
5933 parser_t *parser_create()
5936 lex_ctx_t empty_ctx;
5939 parser = (parser_t*)mem_a(sizeof(parser_t));
5943 memset(parser, 0, sizeof(*parser));
5945 for (i = 0; i < operator_count; ++i) {
5946 if (operators[i].id == opid1('=')) {
5947 parser->assign_op = operators+i;
5951 if (!parser->assign_op) {
5952 con_err("internal error: initializing parser: failed to find assign operator\n");
5957 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5958 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5959 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5960 vec_push(parser->_blocktypedefs, 0);
5962 parser->aliases = util_htnew(PARSER_HT_SIZE);
5965 vec_push(parser->correct_variables, correct_trie_new());
5966 vec_push(parser->correct_variables_score, NULL);
5968 empty_ctx.file = "<internal>";
5970 empty_ctx.column = 0;
5971 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
5972 parser->nil->cvq = CV_CONST;
5973 if (OPTS_FLAG(UNTYPED_NIL))
5974 util_htset(parser->htglobals, "nil", (void*)parser->nil);
5976 parser->max_param_count = 1;
5978 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
5979 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
5980 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
5982 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
5983 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
5984 parser->reserved_version->cvq = CV_CONST;
5985 parser->reserved_version->hasvalue = true;
5986 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
5987 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
5989 parser->reserved_version = NULL;
5992 parser->fold = fold_init (parser);
5993 parser->intrin = intrin_init(parser);
5997 static bool parser_compile(parser_t *parser)
5999 /* initial lexer/parser state */
6000 parser->lex->flags.noops = true;
6002 if (parser_next(parser))
6004 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
6006 if (!parser_global_statement(parser)) {
6007 if (parser->tok == TOKEN_EOF)
6008 parseerror(parser, "unexpected end of file");
6009 else if (compile_errors)
6010 parseerror(parser, "there have been errors, bailing out");
6011 lex_close(parser->lex);
6017 parseerror(parser, "parse error");
6018 lex_close(parser->lex);
6023 lex_close(parser->lex);
6026 return !compile_errors;
6029 bool parser_compile_file(parser_t *parser, const char *filename)
6031 parser->lex = lex_open(filename);
6033 con_err("failed to open file \"%s\"\n", filename);
6036 return parser_compile(parser);
6039 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
6041 parser->lex = lex_open_string(str, len, name);
6043 con_err("failed to create lexer for string \"%s\"\n", name);
6046 return parser_compile(parser);
6049 static void parser_remove_ast(parser_t *parser)
6052 if (parser->ast_cleaned)
6054 parser->ast_cleaned = true;
6055 for (i = 0; i < vec_size(parser->accessors); ++i) {
6056 ast_delete(parser->accessors[i]->constval.vfunc);
6057 parser->accessors[i]->constval.vfunc = NULL;
6058 ast_delete(parser->accessors[i]);
6060 for (i = 0; i < vec_size(parser->functions); ++i) {
6061 ast_delete(parser->functions[i]);
6063 for (i = 0; i < vec_size(parser->fields); ++i) {
6064 ast_delete(parser->fields[i]);
6066 for (i = 0; i < vec_size(parser->globals); ++i) {
6067 ast_delete(parser->globals[i]);
6069 vec_free(parser->accessors);
6070 vec_free(parser->functions);
6071 vec_free(parser->globals);
6072 vec_free(parser->fields);
6074 for (i = 0; i < vec_size(parser->variables); ++i)
6075 util_htdel(parser->variables[i]);
6076 vec_free(parser->variables);
6077 vec_free(parser->_blocklocals);
6078 vec_free(parser->_locals);
6081 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
6082 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
6084 vec_free(parser->correct_variables);
6085 vec_free(parser->correct_variables_score);
6087 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6088 ast_delete(parser->_typedefs[i]);
6089 vec_free(parser->_typedefs);
6090 for (i = 0; i < vec_size(parser->typedefs); ++i)
6091 util_htdel(parser->typedefs[i]);
6092 vec_free(parser->typedefs);
6093 vec_free(parser->_blocktypedefs);
6095 vec_free(parser->_block_ctx);
6097 vec_free(parser->labels);
6098 vec_free(parser->gotos);
6099 vec_free(parser->breaks);
6100 vec_free(parser->continues);
6102 ast_value_delete(parser->nil);
6104 ast_value_delete(parser->const_vec[0]);
6105 ast_value_delete(parser->const_vec[1]);
6106 ast_value_delete(parser->const_vec[2]);
6108 if (parser->reserved_version)
6109 ast_value_delete(parser->reserved_version);
6111 util_htdel(parser->aliases);
6112 fold_cleanup(parser->fold);
6113 intrin_cleanup(parser->intrin);
6116 void parser_cleanup(parser_t *parser)
6118 parser_remove_ast(parser);
6122 bool parser_finish(parser_t *parser, const char *output)
6128 if (compile_errors) {
6129 con_out("*** there were compile errors\n");
6133 ir = ir_builder_new("gmqcc_out");
6135 con_out("failed to allocate builder\n");
6139 for (i = 0; i < vec_size(parser->fields); ++i) {
6142 if (!ast_istype(parser->fields[i], ast_value))
6144 field = (ast_value*)parser->fields[i];
6145 hasvalue = field->hasvalue;
6146 field->hasvalue = false;
6147 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6148 con_out("failed to generate field %s\n", field->name);
6149 ir_builder_delete(ir);
6154 ast_expression *subtype;
6155 field->hasvalue = true;
6156 subtype = field->expression.next;
6157 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6158 if (subtype->vtype == TYPE_FIELD)
6159 ifld->fieldtype = subtype->next->vtype;
6160 else if (subtype->vtype == TYPE_FUNCTION)
6161 ifld->outtype = subtype->next->vtype;
6162 (void)!ir_value_set_field(field->ir_v, ifld);
6165 for (i = 0; i < vec_size(parser->globals); ++i) {
6167 if (!ast_istype(parser->globals[i], ast_value))
6169 asvalue = (ast_value*)(parser->globals[i]);
6170 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6171 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6172 "unused global: `%s`", asvalue->name);
6174 if (!ast_global_codegen(asvalue, ir, false)) {
6175 con_out("failed to generate global %s\n", asvalue->name);
6176 ir_builder_delete(ir);
6180 /* Build function vararg accessor ast tree now before generating
6181 * immediates, because the accessors may add new immediates
6183 for (i = 0; i < vec_size(parser->functions); ++i) {
6184 ast_function *f = parser->functions[i];
6186 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6187 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6188 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6189 con_out("failed to generate vararg setter for %s\n", f->name);
6190 ir_builder_delete(ir);
6193 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6194 con_out("failed to generate vararg getter for %s\n", f->name);
6195 ir_builder_delete(ir);
6199 ast_delete(f->varargs);
6204 /* Now we can generate immediates */
6205 if (!fold_generate(parser->fold, ir))
6208 for (i = 0; i < vec_size(parser->globals); ++i) {
6210 if (!ast_istype(parser->globals[i], ast_value))
6212 asvalue = (ast_value*)(parser->globals[i]);
6213 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6215 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6216 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6217 "uninitialized constant: `%s`",
6219 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6220 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6221 "uninitialized global: `%s`",
6224 if (!ast_generate_accessors(asvalue, ir)) {
6225 ir_builder_delete(ir);
6229 for (i = 0; i < vec_size(parser->fields); ++i) {
6231 asvalue = (ast_value*)(parser->fields[i]->next);
6233 if (!ast_istype((ast_expression*)asvalue, ast_value))
6235 if (asvalue->expression.vtype != TYPE_ARRAY)
6237 if (!ast_generate_accessors(asvalue, ir)) {
6238 ir_builder_delete(ir);
6242 if (parser->reserved_version &&
6243 !ast_global_codegen(parser->reserved_version, ir, false))
6245 con_out("failed to generate reserved::version");
6246 ir_builder_delete(ir);
6249 for (i = 0; i < vec_size(parser->functions); ++i) {
6250 ast_function *f = parser->functions[i];
6251 if (!ast_function_codegen(f, ir)) {
6252 con_out("failed to generate function %s\n", f->name);
6253 ir_builder_delete(ir);
6258 generate_checksum(parser, ir);
6260 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6261 ir_builder_dump(ir, con_out);
6262 for (i = 0; i < vec_size(parser->functions); ++i) {
6263 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6264 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6265 ir_builder_delete(ir);
6269 parser_remove_ast(parser);
6271 if (compile_Werrors) {
6272 con_out("*** there were warnings treated as errors\n");
6273 compile_show_werrors();
6278 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6279 ir_builder_dump(ir, con_out);
6281 if (!ir_builder_generate(ir, output)) {
6282 con_out("*** failed to generate output file\n");
6283 ir_builder_delete(ir);
6287 ir_builder_delete(ir);