2 * Copyright (C) 2012, 2013
6 * Permission is hereby granted, free of charge, to any person obtaining a copy of
7 * this software and associated documentation files (the "Software"), to deal in
8 * the Software without restriction, including without limitation the rights to
9 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
10 * of the Software, and to permit persons to whom the Software is furnished to do
11 * so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
28 #define PARSER_HT_LOCALS 2
29 #define PARSER_HT_SIZE 512
30 #define TYPEDEF_HT_SIZE 512
32 static void parser_enterblock(parser_t *parser);
33 static bool parser_leaveblock(parser_t *parser);
34 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
35 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
36 static bool parse_typedef(parser_t *parser);
37 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool is_static, uint32_t qflags, char *vstring);
38 static ast_block* parse_block(parser_t *parser);
39 static bool parse_block_into(parser_t *parser, ast_block *block);
40 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
41 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
42 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
43 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
44 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname);
45 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname);
46 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
48 static void parseerror(parser_t *parser, const char *fmt, ...)
52 vcompile_error(parser->lex->tok.ctx, fmt, ap);
56 /* returns true if it counts as an error */
57 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
62 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
67 /**********************************************************************
71 static bool parser_next(parser_t *parser)
73 /* lex_do kills the previous token */
74 parser->tok = lex_do(parser->lex);
75 if (parser->tok == TOKEN_EOF)
77 if (parser->tok >= TOKEN_ERROR) {
78 parseerror(parser, "lex error");
84 #define parser_tokval(p) ((p)->lex->tok.value)
85 #define parser_token(p) (&((p)->lex->tok))
87 char *parser_strdup(const char *str)
90 /* actually dup empty strings */
91 char *out = (char*)mem_a(1);
95 return util_strdup(str);
98 static ast_expression* parser_find_field(parser_t *parser, const char *name)
100 return ( ast_expression*)util_htget(parser->htfields, name);
103 static ast_expression* parser_find_label(parser_t *parser, const char *name)
106 for(i = 0; i < vec_size(parser->labels); i++)
107 if (!strcmp(parser->labels[i]->name, name))
108 return (ast_expression*)parser->labels[i];
112 ast_expression* parser_find_global(parser_t *parser, const char *name)
114 ast_expression *var = (ast_expression*)util_htget(parser->aliases, parser_tokval(parser));
117 return (ast_expression*)util_htget(parser->htglobals, name);
120 static ast_expression* parser_find_param(parser_t *parser, const char *name)
124 if (!parser->function)
126 fun = parser->function->vtype;
127 for (i = 0; i < vec_size(fun->expression.params); ++i) {
128 if (!strcmp(fun->expression.params[i]->name, name))
129 return (ast_expression*)(fun->expression.params[i]);
134 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
139 hash = util_hthash(parser->htglobals, name);
142 for (i = vec_size(parser->variables); i > upto;) {
144 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
148 return parser_find_param(parser, name);
151 static ast_expression* parser_find_var(parser_t *parser, const char *name)
155 v = parser_find_local(parser, name, 0, &dummy);
156 if (!v) v = parser_find_global(parser, name);
160 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
164 hash = util_hthash(parser->typedefs[0], name);
166 for (i = vec_size(parser->typedefs); i > upto;) {
168 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
176 size_t etype; /* 0 = expression, others are operators */
180 ast_block *block; /* for commas and function calls */
199 static sy_elem syexp(lex_ctx_t ctx, ast_expression *v) {
210 static sy_elem syblock(lex_ctx_t ctx, ast_block *v) {
214 e.out = (ast_expression*)v;
221 static sy_elem syop(lex_ctx_t ctx, const oper_info *op) {
223 e.etype = 1 + (op - operators);
232 static sy_elem syparen(lex_ctx_t ctx, size_t off) {
243 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
244 * so we need to rotate it to become ent.(foo[n]).
246 static bool rotate_entfield_array_index_nodes(ast_expression **out)
248 ast_array_index *index, *oldindex;
249 ast_entfield *entfield;
253 ast_expression *entity;
255 lex_ctx_t ctx = ast_ctx(*out);
257 if (!ast_istype(*out, ast_array_index))
259 index = (ast_array_index*)*out;
261 if (!ast_istype(index->array, ast_entfield))
263 entfield = (ast_entfield*)index->array;
265 if (!ast_istype(entfield->field, ast_value))
267 field = (ast_value*)entfield->field;
270 entity = entfield->entity;
274 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
275 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
276 *out = (ast_expression*)entfield;
278 oldindex->array = NULL;
279 oldindex->index = NULL;
280 ast_delete(oldindex);
285 static bool check_write_to(lex_ctx_t ctx, ast_expression *expr)
287 if (ast_istype(expr, ast_value)) {
288 ast_value *val = (ast_value*)expr;
289 if (val->cvq == CV_CONST) {
290 if (val->name[0] == '#')
291 compile_error(ctx, "invalid assignment to a literal constant");
293 compile_error(ctx, "assignment to constant `%s`", val->name);
300 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
304 ast_expression *out = NULL;
305 ast_expression *exprs[3];
306 ast_block *blocks[3];
307 ast_binstore *asbinstore;
308 size_t i, assignop, addop, subop;
309 qcint_t generated_op = 0;
314 if (!vec_size(sy->ops)) {
315 parseerror(parser, "internal error: missing operator");
319 if (vec_last(sy->ops).isparen) {
320 parseerror(parser, "unmatched parenthesis");
324 op = &operators[vec_last(sy->ops).etype - 1];
325 ctx = vec_last(sy->ops).ctx;
327 if (vec_size(sy->out) < op->operands) {
328 if (op->flags & OP_PREFIX)
329 compile_error(ctx, "expected expression after unary operator `%s`", op->op, (int)op->id);
330 else /* this should have errored previously already */
331 compile_error(ctx, "expected expression after operator `%s`", op->op, (int)op->id);
335 vec_shrinkby(sy->ops, 1);
337 /* op(:?) has no input and no output */
341 vec_shrinkby(sy->out, op->operands);
342 for (i = 0; i < op->operands; ++i) {
343 exprs[i] = sy->out[vec_size(sy->out)+i].out;
344 blocks[i] = sy->out[vec_size(sy->out)+i].block;
346 if (exprs[i]->vtype == TYPE_NOEXPR &&
347 !(i != 0 && op->id == opid2('?',':')) &&
348 !(i == 1 && op->id == opid1('.')))
350 if (ast_istype(exprs[i], ast_label))
351 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
353 compile_error(ast_ctx(exprs[i]), "not an expression");
354 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
358 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
359 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
363 #define NotSameType(T) \
364 (exprs[0]->vtype != exprs[1]->vtype || \
365 exprs[0]->vtype != T)
369 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
373 if (exprs[0]->vtype == TYPE_VECTOR &&
374 exprs[1]->vtype == TYPE_NOEXPR)
376 if (exprs[1] == (ast_expression*)parser->const_vec[0])
377 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
378 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
379 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
380 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
381 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
383 compile_error(ctx, "access to invalid vector component");
387 else if (exprs[0]->vtype == TYPE_ENTITY) {
388 if (exprs[1]->vtype != TYPE_FIELD) {
389 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
392 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
394 else if (exprs[0]->vtype == TYPE_VECTOR) {
395 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
399 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
405 if (exprs[0]->vtype != TYPE_ARRAY &&
406 !(exprs[0]->vtype == TYPE_FIELD &&
407 exprs[0]->next->vtype == TYPE_ARRAY))
409 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
410 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
413 if (exprs[1]->vtype != TYPE_FLOAT) {
414 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
415 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
418 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
419 if (rotate_entfield_array_index_nodes(&out))
422 /* This is not broken in fteqcc anymore */
423 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
424 /* this error doesn't need to make us bail out */
425 (void)!parsewarning(parser, WARN_EXTENSIONS,
426 "accessing array-field members of an entity without parenthesis\n"
427 " -> this is an extension from -std=gmqcc");
434 if (vec_size(sy->paren) && vec_last(sy->paren) == PAREN_FUNC) {
435 vec_push(sy->out, syexp(ctx, exprs[0]));
436 vec_push(sy->out, syexp(ctx, exprs[1]));
437 vec_last(sy->argc)++;
441 if (!ast_block_add_expr(blocks[0], exprs[1]))
444 blocks[0] = ast_block_new(ctx);
445 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
446 !ast_block_add_expr(blocks[0], exprs[1]))
451 ast_block_set_type(blocks[0], exprs[1]);
453 vec_push(sy->out, syblock(ctx, blocks[0]));
460 if (!(out = fold_op(parser->fold, op, exprs))) {
461 switch (exprs[0]->vtype) {
463 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
464 (ast_expression*)parser->fold->imm_float[0],
468 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
469 (ast_expression*)parser->fold->imm_vector[0],
473 compile_error(ctx, "invalid types used in expression: cannot negate type %s",
474 type_name[exprs[0]->vtype]);
481 if (!(out = fold_op(parser->fold, op, exprs))) {
482 switch (exprs[0]->vtype) {
484 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
487 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
490 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
491 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
493 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
495 /* we don't constant-fold NOT for these types */
497 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
500 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
503 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
504 type_name[exprs[0]->vtype]);
511 if (exprs[0]->vtype != exprs[1]->vtype ||
512 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
514 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
515 type_name[exprs[0]->vtype],
516 type_name[exprs[1]->vtype]);
519 if (!(out = fold_op(parser->fold, op, exprs))) {
520 switch (exprs[0]->vtype) {
522 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
525 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
528 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
529 type_name[exprs[0]->vtype],
530 type_name[exprs[1]->vtype]);
536 if (exprs[0]->vtype != exprs[1]->vtype ||
537 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT))
539 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
540 type_name[exprs[1]->vtype],
541 type_name[exprs[0]->vtype]);
544 if (!(out = fold_op(parser->fold, op, exprs))) {
545 switch (exprs[0]->vtype) {
547 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
550 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
553 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
554 type_name[exprs[1]->vtype],
555 type_name[exprs[0]->vtype]);
561 if (exprs[0]->vtype != exprs[1]->vtype &&
562 !(exprs[0]->vtype == TYPE_VECTOR &&
563 exprs[1]->vtype == TYPE_FLOAT) &&
564 !(exprs[1]->vtype == TYPE_VECTOR &&
565 exprs[0]->vtype == TYPE_FLOAT)
568 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
569 type_name[exprs[1]->vtype],
570 type_name[exprs[0]->vtype]);
573 if (!(out = fold_op(parser->fold, op, exprs))) {
574 switch (exprs[0]->vtype) {
576 if (exprs[1]->vtype == TYPE_VECTOR)
577 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
579 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
582 if (exprs[1]->vtype == TYPE_FLOAT)
583 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
585 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
588 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
589 type_name[exprs[1]->vtype],
590 type_name[exprs[0]->vtype]);
597 if (exprs[1]->vtype != TYPE_FLOAT) {
598 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
599 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
600 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
603 if (!(out = fold_op(parser->fold, op, exprs))) {
604 if (exprs[0]->vtype == TYPE_FLOAT)
605 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
607 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
608 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
609 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
616 if (NotSameType(TYPE_FLOAT)) {
617 compile_error(ctx, "invalid types used in expression: cannot perform modulo operation between types %s and %s",
618 type_name[exprs[0]->vtype],
619 type_name[exprs[1]->vtype]);
621 } else if (!(out = fold_op(parser->fold, op, exprs))) {
622 /* generate a call to __builtin_mod */
623 ast_expression *mod = intrin_func(parser->intrin, "mod");
624 ast_call *call = NULL;
625 if (!mod) return false; /* can return null for missing floor */
627 call = ast_call_new(parser_ctx(parser), mod);
628 vec_push(call->params, exprs[0]);
629 vec_push(call->params, exprs[1]);
631 out = (ast_expression*)call;
636 compile_error(ctx, "%= is unimplemented");
642 if ( !(exprs[0]->vtype == TYPE_FLOAT && exprs[1]->vtype == TYPE_FLOAT) &&
643 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_FLOAT) &&
644 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_VECTOR))
646 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
647 type_name[exprs[0]->vtype],
648 type_name[exprs[1]->vtype]);
652 if (!(out = fold_op(parser->fold, op, exprs))) {
654 * IF the first expression is float, the following will be too
655 * since scalar ^ vector is not allowed.
657 if (exprs[0]->vtype == TYPE_FLOAT) {
658 out = (ast_expression*)ast_binary_new(ctx,
659 (op->id == opid1('^') ? VINSTR_BITXOR : op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
663 * The first is a vector: vector is allowed to bitop with vector and
664 * with scalar, branch here for the second operand.
666 if (exprs[1]->vtype == TYPE_VECTOR) {
668 * Bitop all the values of the vector components against the
669 * vectors components in question.
671 out = (ast_expression*)ast_binary_new(ctx,
672 (op->id == opid1('^') ? VINSTR_BITXOR_V : op->id == opid1('|') ? VINSTR_BITOR_V : VINSTR_BITAND_V),
675 out = (ast_expression*)ast_binary_new(ctx,
676 (op->id == opid1('^') ? VINSTR_BITXOR_VF : op->id == opid1('|') ? VINSTR_BITOR_VF : VINSTR_BITAND_VF),
685 case opid3('<','<','='):
686 case opid3('>','>','='):
687 if(!(out = fold_op(parser->fold, op, exprs))) {
688 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
694 generated_op += 1; /* INSTR_OR */
696 generated_op += INSTR_AND;
697 if (!(out = fold_op(parser->fold, op, exprs))) {
698 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
699 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
700 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
701 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
704 for (i = 0; i < 2; ++i) {
705 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->vtype == TYPE_VECTOR) {
706 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
708 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
710 exprs[i] = out; out = NULL;
711 if (OPTS_FLAG(PERL_LOGIC)) {
712 /* here we want to keep the right expressions' type */
716 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->vtype == TYPE_STRING) {
717 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
719 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
721 exprs[i] = out; out = NULL;
722 if (OPTS_FLAG(PERL_LOGIC)) {
723 /* here we want to keep the right expressions' type */
728 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
733 if (vec_last(sy->paren) != PAREN_TERNARY2) {
734 compile_error(ctx, "mismatched parenthesis/ternary");
738 if (!ast_compare_type(exprs[1], exprs[2])) {
739 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
740 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
741 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
744 if (!(out = fold_op(parser->fold, op, exprs)))
745 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
748 case opid2('*', '*'):
749 if (NotSameType(TYPE_FLOAT)) {
750 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
751 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
752 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
757 if (!(out = fold_op(parser->fold, op, exprs))) {
758 ast_call *gencall = ast_call_new(parser_ctx(parser), intrin_func(parser->intrin, "pow"));
759 vec_push(gencall->params, exprs[0]);
760 vec_push(gencall->params, exprs[1]);
761 out = (ast_expression*)gencall;
765 case opid3('<','=','>'): /* -1, 0, or 1 */
766 if (NotSameType(TYPE_FLOAT)) {
767 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
768 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
769 compile_error(ctx, "invalid types used in comparision: %s and %s",
775 if (!(out = fold_op(parser->fold, op, exprs))) {
776 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
778 eq->refs = AST_REF_NONE;
781 out = (ast_expression*)ast_ternary_new(ctx,
782 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
784 (ast_expression*)parser->fold->imm_float[2],
787 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
789 (ast_expression*)parser->fold->imm_float[0],
792 (ast_expression*)parser->fold->imm_float[1]
802 generated_op += 1; /* INSTR_GT */
804 generated_op += 1; /* INSTR_LT */
805 case opid2('>', '='):
806 generated_op += 1; /* INSTR_GE */
807 case opid2('<', '='):
808 generated_op += INSTR_LE;
809 if (NotSameType(TYPE_FLOAT)) {
810 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
811 type_name[exprs[0]->vtype],
812 type_name[exprs[1]->vtype]);
815 if (!(out = fold_op(parser->fold, op, exprs)))
816 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
818 case opid2('!', '='):
819 if (exprs[0]->vtype != exprs[1]->vtype) {
820 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
821 type_name[exprs[0]->vtype],
822 type_name[exprs[1]->vtype]);
825 if (!(out = fold_op(parser->fold, op, exprs)))
826 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->vtype], exprs[0], exprs[1]);
828 case opid2('=', '='):
829 if (exprs[0]->vtype != exprs[1]->vtype) {
830 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
831 type_name[exprs[0]->vtype],
832 type_name[exprs[1]->vtype]);
835 if (!(out = fold_op(parser->fold, op, exprs)))
836 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->vtype], exprs[0], exprs[1]);
840 if (ast_istype(exprs[0], ast_entfield)) {
841 ast_expression *field = ((ast_entfield*)exprs[0])->field;
842 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
843 exprs[0]->vtype == TYPE_FIELD &&
844 exprs[0]->next->vtype == TYPE_VECTOR)
846 assignop = type_storep_instr[TYPE_VECTOR];
849 assignop = type_storep_instr[exprs[0]->vtype];
850 if (assignop == VINSTR_END || !ast_compare_type(field->next, exprs[1]))
852 ast_type_to_string(field->next, ty1, sizeof(ty1));
853 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
854 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
855 field->next->vtype == TYPE_FUNCTION &&
856 exprs[1]->vtype == TYPE_FUNCTION)
858 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
859 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
862 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
867 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
868 exprs[0]->vtype == TYPE_FIELD &&
869 exprs[0]->next->vtype == TYPE_VECTOR)
871 assignop = type_store_instr[TYPE_VECTOR];
874 assignop = type_store_instr[exprs[0]->vtype];
877 if (assignop == VINSTR_END) {
878 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
879 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
880 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
882 else if (!ast_compare_type(exprs[0], exprs[1]))
884 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
885 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
886 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
887 exprs[0]->vtype == TYPE_FUNCTION &&
888 exprs[1]->vtype == TYPE_FUNCTION)
890 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
891 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
894 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
897 (void)check_write_to(ctx, exprs[0]);
898 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
900 case opid3('+','+','P'):
901 case opid3('-','-','P'):
903 if (exprs[0]->vtype != TYPE_FLOAT) {
904 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
905 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
908 if (op->id == opid3('+','+','P'))
912 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
913 if (ast_istype(exprs[0], ast_entfield)) {
914 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
916 (ast_expression*)parser->fold->imm_float[1]);
918 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
920 (ast_expression*)parser->fold->imm_float[1]);
923 case opid3('S','+','+'):
924 case opid3('S','-','-'):
926 if (exprs[0]->vtype != TYPE_FLOAT) {
927 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
928 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
931 if (op->id == opid3('S','+','+')) {
938 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
939 if (ast_istype(exprs[0], ast_entfield)) {
940 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
942 (ast_expression*)parser->fold->imm_float[1]);
944 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
946 (ast_expression*)parser->fold->imm_float[1]);
950 out = (ast_expression*)ast_binary_new(ctx, subop,
952 (ast_expression*)parser->fold->imm_float[1]);
956 if (exprs[0]->vtype != exprs[1]->vtype ||
957 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
959 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
960 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
961 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
965 (void)check_write_to(ctx, exprs[0]);
966 if (ast_istype(exprs[0], ast_entfield))
967 assignop = type_storep_instr[exprs[0]->vtype];
969 assignop = type_store_instr[exprs[0]->vtype];
970 switch (exprs[0]->vtype) {
972 out = (ast_expression*)ast_binstore_new(ctx, assignop,
973 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
977 out = (ast_expression*)ast_binstore_new(ctx, assignop,
978 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
982 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
983 type_name[exprs[0]->vtype],
984 type_name[exprs[1]->vtype]);
990 if (exprs[1]->vtype != TYPE_FLOAT ||
991 !(exprs[0]->vtype == TYPE_FLOAT ||
992 exprs[0]->vtype == TYPE_VECTOR))
994 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
995 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
996 compile_error(ctx, "invalid types used in expression: %s and %s",
1000 (void)check_write_to(ctx, exprs[0]);
1001 if (ast_istype(exprs[0], ast_entfield))
1002 assignop = type_storep_instr[exprs[0]->vtype];
1004 assignop = type_store_instr[exprs[0]->vtype];
1005 switch (exprs[0]->vtype) {
1007 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1008 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1009 exprs[0], exprs[1]);
1012 if (op->id == opid2('*','=')) {
1013 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1014 exprs[0], exprs[1]);
1016 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1017 (ast_expression*)parser->fold->imm_float[1],
1020 compile_error(ctx, "internal error: failed to generate division");
1023 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1028 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1029 type_name[exprs[0]->vtype],
1030 type_name[exprs[1]->vtype]);
1034 case opid2('&','='):
1035 case opid2('|','='):
1036 case opid2('^','='):
1037 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1038 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1039 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1040 compile_error(ctx, "invalid types used in expression: %s and %s",
1044 (void)check_write_to(ctx, exprs[0]);
1045 if (ast_istype(exprs[0], ast_entfield))
1046 assignop = type_storep_instr[exprs[0]->vtype];
1048 assignop = type_store_instr[exprs[0]->vtype];
1049 if (exprs[0]->vtype == TYPE_FLOAT)
1050 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1051 (op->id == opid2('^','=') ? VINSTR_BITXOR : op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1052 exprs[0], exprs[1]);
1054 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1055 (op->id == opid2('^','=') ? VINSTR_BITXOR_V : op->id == opid2('&','=') ? VINSTR_BITAND_V : VINSTR_BITOR_V),
1056 exprs[0], exprs[1]);
1058 case opid3('&','~','='):
1059 /* This is like: a &= ~(b);
1060 * But QC has no bitwise-not, so we implement it as
1063 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1064 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1065 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1066 compile_error(ctx, "invalid types used in expression: %s and %s",
1070 if (ast_istype(exprs[0], ast_entfield))
1071 assignop = type_storep_instr[exprs[0]->vtype];
1073 assignop = type_store_instr[exprs[0]->vtype];
1074 if (exprs[0]->vtype == TYPE_FLOAT)
1075 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1077 out = (ast_expression*)ast_binary_new(ctx, VINSTR_BITAND_V, exprs[0], exprs[1]);
1080 (void)check_write_to(ctx, exprs[0]);
1081 if (exprs[0]->vtype == TYPE_FLOAT)
1082 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1084 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_V, exprs[0], out);
1085 asbinstore->keep_dest = true;
1086 out = (ast_expression*)asbinstore;
1089 case opid2('~', 'P'):
1090 if (exprs[0]->vtype != TYPE_FLOAT && exprs[0]->vtype != TYPE_VECTOR) {
1091 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1092 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1095 if (!(out = fold_op(parser->fold, op, exprs))) {
1096 if (exprs[0]->vtype == TYPE_FLOAT) {
1097 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, (ast_expression*)parser->fold->imm_float[2], exprs[0]);
1099 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, (ast_expression*)parser->fold->imm_vector[1], exprs[0]);
1106 compile_error(ctx, "failed to apply operator %s", op->op);
1110 vec_push(sy->out, syexp(ctx, out));
1114 static bool parser_close_call(parser_t *parser, shunt *sy)
1116 /* was a function call */
1117 ast_expression *fun;
1118 ast_value *funval = NULL;
1122 size_t paramcount, i;
1125 fid = vec_last(sy->ops).off;
1126 vec_shrinkby(sy->ops, 1);
1128 /* out[fid] is the function
1129 * everything above is parameters...
1131 if (!vec_size(sy->argc)) {
1132 parseerror(parser, "internal error: no argument counter available");
1136 paramcount = vec_last(sy->argc);
1139 if (vec_size(sy->out) < fid) {
1140 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1141 (unsigned long)vec_size(sy->out),
1143 (unsigned long)paramcount);
1148 * TODO handle this at the intrinsic level with an ast_intrinsic
1151 if ((fun = sy->out[fid].out) == intrin_debug_typestring(parser->intrin)) {
1153 if (fid+2 != vec_size(sy->out) ||
1154 vec_last(sy->out).block)
1156 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1159 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1160 ast_unref(vec_last(sy->out).out);
1161 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1162 (ast_expression*)fold_constgen_string(parser->fold, ty, false));
1163 vec_shrinkby(sy->out, 1);
1168 * Now we need to determine if the function that is being called is
1169 * an intrinsic so we can evaluate if the arguments to it are constant
1170 * and than fruitfully fold them.
1172 #define fold_can_1(X) \
1173 (ast_istype(((ast_expression*)(X)), ast_value) && (X)->hasvalue && ((X)->cvq == CV_CONST) && \
1174 ((ast_expression*)(X))->vtype != TYPE_FUNCTION)
1176 if (fid + 1 < vec_size(sy->out))
1179 for (i = 0; i < paramcount; ++i) {
1180 if (!fold_can_1((ast_value*)sy->out[fid + 1 + i].out)) {
1187 * All is well which ends well, if we make it into here we can ignore the
1188 * intrinsic call and just evaluate it i.e constant fold it.
1190 if (fold && ast_istype(fun, ast_value) && ((ast_value*)fun)->intrinsic) {
1191 ast_expression **exprs = NULL;
1192 ast_expression *foldval = NULL;
1194 for (i = 0; i < paramcount; i++)
1195 vec_push(exprs, sy->out[fid+1 + i].out);
1197 if (!(foldval = intrin_fold(parser->intrin, (ast_value*)fun, exprs))) {
1203 * Blub: what sorts of unreffing and resizing of
1204 * sy->out should I be doing here?
1206 sy->out[fid] = syexp(foldval->node.context, foldval);
1207 vec_shrinkby(sy->out, 1);
1214 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1219 if (fid+1 + paramcount != vec_size(sy->out)) {
1220 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1221 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1225 for (i = 0; i < paramcount; ++i)
1226 vec_push(call->params, sy->out[fid+1 + i].out);
1227 vec_shrinkby(sy->out, paramcount);
1228 (void)!ast_call_check_types(call, parser->function->vtype->expression.varparam);
1229 if (parser->max_param_count < paramcount)
1230 parser->max_param_count = paramcount;
1232 if (ast_istype(fun, ast_value)) {
1233 funval = (ast_value*)fun;
1234 if ((fun->flags & AST_FLAG_VARIADIC) &&
1235 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1237 call->va_count = (ast_expression*)fold_constgen_float(parser->fold, (qcfloat_t)paramcount);
1241 /* overwrite fid, the function, with a call */
1242 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1244 if (fun->vtype != TYPE_FUNCTION) {
1245 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1250 parseerror(parser, "could not determine function return type");
1253 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1255 if (fun->flags & AST_FLAG_DEPRECATED) {
1257 return !parsewarning(parser, WARN_DEPRECATED,
1258 "call to function (which is marked deprecated)\n",
1259 "-> it has been declared here: %s:%i",
1260 ast_ctx(fun).file, ast_ctx(fun).line);
1263 return !parsewarning(parser, WARN_DEPRECATED,
1264 "call to `%s` (which is marked deprecated)\n"
1265 "-> `%s` declared here: %s:%i",
1266 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1268 return !parsewarning(parser, WARN_DEPRECATED,
1269 "call to `%s` (deprecated: %s)\n"
1270 "-> `%s` declared here: %s:%i",
1271 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1275 if (vec_size(fun->params) != paramcount &&
1276 !((fun->flags & AST_FLAG_VARIADIC) &&
1277 vec_size(fun->params) < paramcount))
1279 const char *fewmany = (vec_size(fun->params) > paramcount) ? "few" : "many";
1281 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1282 "too %s parameters for call to %s: expected %i, got %i\n"
1283 " -> `%s` has been declared here: %s:%i",
1284 fewmany, fval->name, (int)vec_size(fun->params), (int)paramcount,
1285 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1287 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1288 "too %s parameters for function call: expected %i, got %i\n"
1289 " -> it has been declared here: %s:%i",
1290 fewmany, (int)vec_size(fun->params), (int)paramcount,
1291 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1298 static bool parser_close_paren(parser_t *parser, shunt *sy)
1300 if (!vec_size(sy->ops)) {
1301 parseerror(parser, "unmatched closing paren");
1305 while (vec_size(sy->ops)) {
1306 if (vec_last(sy->ops).isparen) {
1307 if (vec_last(sy->paren) == PAREN_FUNC) {
1309 if (!parser_close_call(parser, sy))
1313 if (vec_last(sy->paren) == PAREN_EXPR) {
1315 if (!vec_size(sy->out)) {
1316 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1317 vec_shrinkby(sy->ops, 1);
1320 vec_shrinkby(sy->ops, 1);
1323 if (vec_last(sy->paren) == PAREN_INDEX) {
1325 /* pop off the parenthesis */
1326 vec_shrinkby(sy->ops, 1);
1327 /* then apply the index operator */
1328 if (!parser_sy_apply_operator(parser, sy))
1332 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1333 vec_last(sy->paren) = PAREN_TERNARY2;
1334 /* pop off the parenthesis */
1335 vec_shrinkby(sy->ops, 1);
1338 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1341 if (!parser_sy_apply_operator(parser, sy))
1347 static void parser_reclassify_token(parser_t *parser)
1350 if (parser->tok >= TOKEN_START)
1352 for (i = 0; i < operator_count; ++i) {
1353 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1354 parser->tok = TOKEN_OPERATOR;
1360 static ast_expression* parse_vararg_do(parser_t *parser)
1362 ast_expression *idx, *out;
1364 ast_value *funtype = parser->function->vtype;
1365 lex_ctx_t ctx = parser_ctx(parser);
1367 if (!parser->function->varargs) {
1368 parseerror(parser, "function has no variable argument list");
1372 if (!parser_next(parser) || parser->tok != '(') {
1373 parseerror(parser, "expected parameter index and type in parenthesis");
1376 if (!parser_next(parser)) {
1377 parseerror(parser, "error parsing parameter index");
1381 idx = parse_expression_leave(parser, true, false, false);
1385 if (parser->tok != ',') {
1386 if (parser->tok != ')') {
1388 parseerror(parser, "expected comma after parameter index");
1391 /* vararg piping: ...(start) */
1392 out = (ast_expression*)ast_argpipe_new(ctx, idx);
1396 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1398 parseerror(parser, "expected typename for vararg");
1402 typevar = parse_typename(parser, NULL, NULL);
1408 if (parser->tok != ')') {
1410 ast_delete(typevar);
1411 parseerror(parser, "expected closing paren");
1415 if (funtype->expression.varparam &&
1416 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1420 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1421 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1422 compile_error(ast_ctx(typevar),
1423 "function was declared to take varargs of type `%s`, requested type is: %s",
1427 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1428 ast_type_adopt(out, typevar);
1429 ast_delete(typevar);
1433 static ast_expression* parse_vararg(parser_t *parser)
1435 bool old_noops = parser->lex->flags.noops;
1437 ast_expression *out;
1439 parser->lex->flags.noops = true;
1440 out = parse_vararg_do(parser);
1442 parser->lex->flags.noops = old_noops;
1446 /* not to be exposed */
1447 bool ftepp_predef_exists(const char *name);
1448 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1450 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1451 parser->tok == TOKEN_IDENT &&
1452 !strcmp(parser_tokval(parser), "_"))
1454 /* a translatable string */
1457 parser->lex->flags.noops = true;
1458 if (!parser_next(parser) || parser->tok != '(') {
1459 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1462 parser->lex->flags.noops = false;
1463 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1464 parseerror(parser, "expected a constant string in translatable-string extension");
1467 val = (ast_value*)fold_constgen_string(parser->fold, parser_tokval(parser), true);
1470 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1472 if (!parser_next(parser) || parser->tok != ')') {
1473 parseerror(parser, "expected closing paren after translatable string");
1478 else if (parser->tok == TOKEN_DOTS)
1481 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1482 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1485 va = parse_vararg(parser);
1488 vec_push(sy->out, syexp(parser_ctx(parser), va));
1491 else if (parser->tok == TOKEN_FLOATCONST) {
1492 ast_expression *val = fold_constgen_float(parser->fold, (parser_token(parser)->constval.f));
1495 vec_push(sy->out, syexp(parser_ctx(parser), val));
1498 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1499 ast_expression *val = fold_constgen_float(parser->fold, (qcfloat_t)(parser_token(parser)->constval.i));
1502 vec_push(sy->out, syexp(parser_ctx(parser), val));
1505 else if (parser->tok == TOKEN_STRINGCONST) {
1506 ast_expression *val = fold_constgen_string(parser->fold, parser_tokval(parser), false);
1509 vec_push(sy->out, syexp(parser_ctx(parser), val));
1512 else if (parser->tok == TOKEN_VECTORCONST) {
1513 ast_expression *val = fold_constgen_vector(parser->fold, parser_token(parser)->constval.v);
1516 vec_push(sy->out, syexp(parser_ctx(parser), val));
1519 else if (parser->tok == TOKEN_IDENT)
1521 const char *ctoken = parser_tokval(parser);
1522 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1523 ast_expression *var;
1524 /* a_vector.{x,y,z} */
1525 if (!vec_size(sy->ops) ||
1526 !vec_last(sy->ops).etype ||
1527 operators[vec_last(sy->ops).etype-1].id != opid1('.'))
1529 /* When adding more intrinsics, fix the above condition */
1532 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1534 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1536 var = parser_find_var(parser, parser_tokval(parser));
1538 var = parser_find_field(parser, parser_tokval(parser));
1540 if (!var && with_labels) {
1541 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1543 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1544 var = (ast_expression*)lbl;
1545 vec_push(parser->labels, lbl);
1548 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
1549 var = (ast_expression*)fold_constgen_string(parser->fold, parser->function->name, false);
1552 * now we try for the real intrinsic hashtable. If the string
1553 * begins with __builtin, we simply skip past it, otherwise we
1554 * use the identifier as is.
1556 if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
1557 var = intrin_func(parser->intrin, parser_tokval(parser));
1561 char *correct = NULL;
1565 * sometimes people use preprocessing predefs without enabling them
1566 * i've done this thousands of times already myself. Lets check for
1567 * it in the predef table. And diagnose it better :)
1569 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
1570 parseerror(parser, "unexpected identifier: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1575 * TODO: determine the best score for the identifier: be it
1576 * a variable, a field.
1578 * We should also consider adding correction tables for
1579 * other things as well.
1581 if (OPTS_OPTION_BOOL(OPTION_CORRECTION) && strlen(parser_tokval(parser)) <= 16) {
1583 correct_init(&corr);
1585 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1586 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1587 if (strcmp(correct, parser_tokval(parser))) {
1594 correct_free(&corr);
1597 parseerror(parser, "unexpected identifier: %s (did you mean %s?)", parser_tokval(parser), correct);
1602 parseerror(parser, "unexpected identifier: %s", parser_tokval(parser));
1608 if (ast_istype(var, ast_value)) {
1609 ((ast_value*)var)->uses++;
1611 else if (ast_istype(var, ast_member)) {
1612 ast_member *mem = (ast_member*)var;
1613 if (ast_istype(mem->owner, ast_value))
1614 ((ast_value*)(mem->owner))->uses++;
1617 vec_push(sy->out, syexp(parser_ctx(parser), var));
1620 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1624 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1626 ast_expression *expr = NULL;
1629 bool wantop = false;
1630 /* only warn once about an assignment in a truth value because the current code
1631 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1633 bool warn_parenthesis = true;
1635 /* count the parens because an if starts with one, so the
1636 * end of a condition is an unmatched closing paren
1640 memset(&sy, 0, sizeof(sy));
1642 parser->lex->flags.noops = false;
1644 parser_reclassify_token(parser);
1648 if (parser->tok == TOKEN_TYPENAME) {
1649 parseerror(parser, "unexpected typename `%s`", parser_tokval(parser));
1653 if (parser->tok == TOKEN_OPERATOR)
1655 /* classify the operator */
1656 const oper_info *op;
1657 const oper_info *olast = NULL;
1659 for (o = 0; o < operator_count; ++o) {
1660 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1661 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1662 !strcmp(parser_tokval(parser), operators[o].op))
1667 if (o == operator_count) {
1668 compile_error(parser_ctx(parser), "unexpected operator: %s", parser_tokval(parser));
1671 /* found an operator */
1674 /* when declaring variables, a comma starts a new variable */
1675 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
1676 /* fixup the token */
1681 /* a colon without a pervious question mark cannot be a ternary */
1682 if (!ternaries && op->id == opid2(':','?')) {
1687 if (op->id == opid1(',')) {
1688 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1689 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1693 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1694 olast = &operators[vec_last(sy.ops).etype-1];
1696 /* first only apply higher precedences, assoc_left+equal comes after we warn about precedence rules */
1697 while (olast && op->prec < olast->prec)
1699 if (!parser_sy_apply_operator(parser, &sy))
1701 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1702 olast = &operators[vec_last(sy.ops).etype-1];
1707 #define IsAssignOp(x) (\
1708 (x) == opid1('=') || \
1709 (x) == opid2('+','=') || \
1710 (x) == opid2('-','=') || \
1711 (x) == opid2('*','=') || \
1712 (x) == opid2('/','=') || \
1713 (x) == opid2('%','=') || \
1714 (x) == opid2('&','=') || \
1715 (x) == opid2('|','=') || \
1716 (x) == opid3('&','~','=') \
1718 if (warn_parenthesis) {
1719 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1720 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1721 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
1724 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1725 warn_parenthesis = false;
1728 if (olast && olast->id != op->id) {
1729 if ((op->id == opid1('&') || op->id == opid1('|') || op->id == opid1('^')) &&
1730 (olast->id == opid1('&') || olast->id == opid1('|') || olast->id == opid1('^')))
1732 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around bitwise operations");
1733 warn_parenthesis = false;
1735 else if ((op->id == opid2('&','&') || op->id == opid2('|','|')) &&
1736 (olast->id == opid2('&','&') || olast->id == opid2('|','|')))
1738 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around logical operations");
1739 warn_parenthesis = false;
1745 (op->prec < olast->prec) ||
1746 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1748 if (!parser_sy_apply_operator(parser, &sy))
1750 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1751 olast = &operators[vec_last(sy.ops).etype-1];
1756 if (op->id == opid1('(')) {
1758 size_t sycount = vec_size(sy.out);
1759 /* we expected an operator, this is the function-call operator */
1760 vec_push(sy.paren, PAREN_FUNC);
1761 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
1762 vec_push(sy.argc, 0);
1764 vec_push(sy.paren, PAREN_EXPR);
1765 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1768 } else if (op->id == opid1('[')) {
1770 parseerror(parser, "unexpected array subscript");
1773 vec_push(sy.paren, PAREN_INDEX);
1774 /* push both the operator and the paren, this makes life easier */
1775 vec_push(sy.ops, syop(parser_ctx(parser), op));
1776 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1778 } else if (op->id == opid2('?',':')) {
1779 vec_push(sy.ops, syop(parser_ctx(parser), op));
1780 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1783 vec_push(sy.paren, PAREN_TERNARY1);
1784 } else if (op->id == opid2(':','?')) {
1785 if (!vec_size(sy.paren)) {
1786 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1789 if (vec_last(sy.paren) != PAREN_TERNARY1) {
1790 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1793 if (!parser_close_paren(parser, &sy))
1795 vec_push(sy.ops, syop(parser_ctx(parser), op));
1799 vec_push(sy.ops, syop(parser_ctx(parser), op));
1800 wantop = !!(op->flags & OP_SUFFIX);
1803 else if (parser->tok == ')') {
1804 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1805 if (!parser_sy_apply_operator(parser, &sy))
1808 if (!vec_size(sy.paren))
1811 if (vec_last(sy.paren) == PAREN_TERNARY1) {
1812 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
1815 if (!parser_close_paren(parser, &sy))
1818 /* must be a function call without parameters */
1819 if (vec_last(sy.paren) != PAREN_FUNC) {
1820 parseerror(parser, "closing paren in invalid position");
1823 if (!parser_close_paren(parser, &sy))
1828 else if (parser->tok == '(') {
1829 parseerror(parser, "internal error: '(' should be classified as operator");
1832 else if (parser->tok == '[') {
1833 parseerror(parser, "internal error: '[' should be classified as operator");
1836 else if (parser->tok == ']') {
1837 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1838 if (!parser_sy_apply_operator(parser, &sy))
1841 if (!vec_size(sy.paren))
1843 if (vec_last(sy.paren) != PAREN_INDEX) {
1844 parseerror(parser, "mismatched parentheses, unexpected ']'");
1847 if (!parser_close_paren(parser, &sy))
1852 if (!parse_sya_operand(parser, &sy, with_labels))
1855 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
1856 vec_last(sy.argc)++;
1861 /* in this case we might want to allow constant string concatenation */
1862 bool concatenated = false;
1863 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
1864 ast_expression *lexpr = vec_last(sy.out).out;
1865 if (ast_istype(lexpr, ast_value)) {
1866 ast_value *last = (ast_value*)lexpr;
1867 if (last->isimm == true && last->cvq == CV_CONST &&
1868 last->hasvalue && last->expression.vtype == TYPE_STRING)
1870 char *newstr = NULL;
1871 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
1872 vec_last(sy.out).out = (ast_expression*)fold_constgen_string(parser->fold, newstr, false);
1874 concatenated = true;
1878 if (!concatenated) {
1879 parseerror(parser, "expected operator or end of statement");
1884 if (!parser_next(parser)) {
1887 if (parser->tok == ';' ||
1888 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
1889 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
1895 while (vec_size(sy.ops)) {
1896 if (!parser_sy_apply_operator(parser, &sy))
1900 parser->lex->flags.noops = true;
1901 if (vec_size(sy.out) != 1) {
1902 parseerror(parser, "expression with not 1 but %lu output values...", (unsigned long) vec_size(sy.out));
1905 expr = sy.out[0].out;
1908 if (vec_size(sy.paren)) {
1909 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
1917 parser->lex->flags.noops = true;
1918 for (i = 0; i < vec_size(sy.out); ++i) {
1920 ast_unref(sy.out[i].out);
1929 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
1931 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
1934 if (parser->tok != ';') {
1935 parseerror(parser, "semicolon expected after expression");
1939 if (!parser_next(parser)) {
1946 static void parser_enterblock(parser_t *parser)
1948 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1949 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1950 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1951 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1952 vec_push(parser->_block_ctx, parser_ctx(parser));
1955 vec_push(parser->correct_variables, correct_trie_new());
1956 vec_push(parser->correct_variables_score, NULL);
1959 static bool parser_leaveblock(parser_t *parser)
1962 size_t locals, typedefs;
1964 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1965 parseerror(parser, "internal error: parser_leaveblock with no block");
1969 util_htdel(vec_last(parser->variables));
1970 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
1972 vec_pop(parser->variables);
1973 vec_pop(parser->correct_variables);
1974 vec_pop(parser->correct_variables_score);
1975 if (!vec_size(parser->_blocklocals)) {
1976 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1980 locals = vec_last(parser->_blocklocals);
1981 vec_pop(parser->_blocklocals);
1982 while (vec_size(parser->_locals) != locals) {
1983 ast_expression *e = vec_last(parser->_locals);
1984 ast_value *v = (ast_value*)e;
1985 vec_pop(parser->_locals);
1986 if (ast_istype(e, ast_value) && !v->uses) {
1987 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
1992 typedefs = vec_last(parser->_blocktypedefs);
1993 while (vec_size(parser->_typedefs) != typedefs) {
1994 ast_delete(vec_last(parser->_typedefs));
1995 vec_pop(parser->_typedefs);
1997 util_htdel(vec_last(parser->typedefs));
1998 vec_pop(parser->typedefs);
2000 vec_pop(parser->_block_ctx);
2005 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2007 vec_push(parser->_locals, e);
2008 util_htset(vec_last(parser->variables), name, (void*)e);
2012 vec_last(parser->correct_variables),
2013 &vec_last(parser->correct_variables_score),
2018 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2020 vec_push(parser->globals, e);
2021 util_htset(parser->htglobals, name, e);
2025 parser->correct_variables[0],
2026 &parser->correct_variables_score[0],
2031 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2035 ast_expression *prev;
2037 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2039 ast_type_to_string(cond, ty, sizeof(ty));
2040 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2043 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2046 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2049 parseerror(parser, "internal error: failed to process condition");
2054 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2056 /* vector types need to be cast to true booleans */
2057 ast_binary *bin = (ast_binary*)cond;
2058 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2060 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2062 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2065 parseerror(parser, "internal error: failed to process condition");
2072 unary = (ast_unary*)cond;
2073 /* ast_istype dereferences cond, should test here for safety */
2074 while (cond && ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2076 cond = unary->operand;
2077 unary->operand = NULL;
2080 unary = (ast_unary*)cond;
2084 parseerror(parser, "internal error: failed to process condition");
2086 if (ifnot) *_ifnot = !*_ifnot;
2090 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2093 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2096 lex_ctx_t ctx = parser_ctx(parser);
2098 (void)block; /* not touching */
2100 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2101 if (!parser_next(parser)) {
2102 parseerror(parser, "expected condition or 'not'");
2105 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2107 if (!parser_next(parser)) {
2108 parseerror(parser, "expected condition in parenthesis");
2112 if (parser->tok != '(') {
2113 parseerror(parser, "expected 'if' condition in parenthesis");
2116 /* parse into the expression */
2117 if (!parser_next(parser)) {
2118 parseerror(parser, "expected 'if' condition after opening paren");
2121 /* parse the condition */
2122 cond = parse_expression_leave(parser, false, true, false);
2126 if (parser->tok != ')') {
2127 parseerror(parser, "expected closing paren after 'if' condition");
2131 /* parse into the 'then' branch */
2132 if (!parser_next(parser)) {
2133 parseerror(parser, "expected statement for on-true branch of 'if'");
2137 if (!parse_statement_or_block(parser, &ontrue)) {
2142 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2143 /* check for an else */
2144 if (!strcmp(parser_tokval(parser), "else")) {
2145 /* parse into the 'else' branch */
2146 if (!parser_next(parser)) {
2147 parseerror(parser, "expected on-false branch after 'else'");
2152 if (!parse_statement_or_block(parser, &onfalse)) {
2159 cond = process_condition(parser, cond, &ifnot);
2161 if (ontrue) ast_delete(ontrue);
2162 if (onfalse) ast_delete(onfalse);
2167 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2169 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2170 *out = (ast_expression*)ifthen;
2174 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2175 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2180 /* skip the 'while' and get the body */
2181 if (!parser_next(parser)) {
2182 if (OPTS_FLAG(LOOP_LABELS))
2183 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2185 parseerror(parser, "expected 'while' condition in parenthesis");
2189 if (parser->tok == ':') {
2190 if (!OPTS_FLAG(LOOP_LABELS))
2191 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2192 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2193 parseerror(parser, "expected loop label");
2196 label = util_strdup(parser_tokval(parser));
2197 if (!parser_next(parser)) {
2199 parseerror(parser, "expected 'while' condition in parenthesis");
2204 if (parser->tok != '(') {
2205 parseerror(parser, "expected 'while' condition in parenthesis");
2209 vec_push(parser->breaks, label);
2210 vec_push(parser->continues, label);
2212 rv = parse_while_go(parser, block, out);
2215 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2216 parseerror(parser, "internal error: label stack corrupted");
2222 vec_pop(parser->breaks);
2223 vec_pop(parser->continues);
2228 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2231 ast_expression *cond, *ontrue;
2235 lex_ctx_t ctx = parser_ctx(parser);
2237 (void)block; /* not touching */
2239 /* parse into the expression */
2240 if (!parser_next(parser)) {
2241 parseerror(parser, "expected 'while' condition after opening paren");
2244 /* parse the condition */
2245 cond = parse_expression_leave(parser, false, true, false);
2249 if (parser->tok != ')') {
2250 parseerror(parser, "expected closing paren after 'while' condition");
2254 /* parse into the 'then' branch */
2255 if (!parser_next(parser)) {
2256 parseerror(parser, "expected while-loop body");
2260 if (!parse_statement_or_block(parser, &ontrue)) {
2265 cond = process_condition(parser, cond, &ifnot);
2270 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2271 *out = (ast_expression*)aloop;
2275 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2276 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2281 /* skip the 'do' and get the body */
2282 if (!parser_next(parser)) {
2283 if (OPTS_FLAG(LOOP_LABELS))
2284 parseerror(parser, "expected loop label or body");
2286 parseerror(parser, "expected loop body");
2290 if (parser->tok == ':') {
2291 if (!OPTS_FLAG(LOOP_LABELS))
2292 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2293 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2294 parseerror(parser, "expected loop label");
2297 label = util_strdup(parser_tokval(parser));
2298 if (!parser_next(parser)) {
2300 parseerror(parser, "expected loop body");
2305 vec_push(parser->breaks, label);
2306 vec_push(parser->continues, label);
2308 rv = parse_dowhile_go(parser, block, out);
2311 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2312 parseerror(parser, "internal error: label stack corrupted");
2315 * Test for NULL otherwise ast_delete dereferences null pointer
2323 vec_pop(parser->breaks);
2324 vec_pop(parser->continues);
2329 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2332 ast_expression *cond, *ontrue;
2336 lex_ctx_t ctx = parser_ctx(parser);
2338 (void)block; /* not touching */
2340 if (!parse_statement_or_block(parser, &ontrue))
2343 /* expect the "while" */
2344 if (parser->tok != TOKEN_KEYWORD ||
2345 strcmp(parser_tokval(parser), "while"))
2347 parseerror(parser, "expected 'while' and condition");
2352 /* skip the 'while' and check for opening paren */
2353 if (!parser_next(parser) || parser->tok != '(') {
2354 parseerror(parser, "expected 'while' condition in parenthesis");
2358 /* parse into the expression */
2359 if (!parser_next(parser)) {
2360 parseerror(parser, "expected 'while' condition after opening paren");
2364 /* parse the condition */
2365 cond = parse_expression_leave(parser, false, true, false);
2369 if (parser->tok != ')') {
2370 parseerror(parser, "expected closing paren after 'while' condition");
2376 if (!parser_next(parser) || parser->tok != ';') {
2377 parseerror(parser, "expected semicolon after condition");
2383 if (!parser_next(parser)) {
2384 parseerror(parser, "parse error");
2390 cond = process_condition(parser, cond, &ifnot);
2395 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2396 *out = (ast_expression*)aloop;
2400 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2401 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2406 /* skip the 'for' and check for opening paren */
2407 if (!parser_next(parser)) {
2408 if (OPTS_FLAG(LOOP_LABELS))
2409 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2411 parseerror(parser, "expected 'for' expressions in parenthesis");
2415 if (parser->tok == ':') {
2416 if (!OPTS_FLAG(LOOP_LABELS))
2417 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2418 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2419 parseerror(parser, "expected loop label");
2422 label = util_strdup(parser_tokval(parser));
2423 if (!parser_next(parser)) {
2425 parseerror(parser, "expected 'for' expressions in parenthesis");
2430 if (parser->tok != '(') {
2431 parseerror(parser, "expected 'for' expressions in parenthesis");
2435 vec_push(parser->breaks, label);
2436 vec_push(parser->continues, label);
2438 rv = parse_for_go(parser, block, out);
2441 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2442 parseerror(parser, "internal error: label stack corrupted");
2448 vec_pop(parser->breaks);
2449 vec_pop(parser->continues);
2453 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2456 ast_expression *initexpr, *cond, *increment, *ontrue;
2461 lex_ctx_t ctx = parser_ctx(parser);
2463 parser_enterblock(parser);
2470 /* parse into the expression */
2471 if (!parser_next(parser)) {
2472 parseerror(parser, "expected 'for' initializer after opening paren");
2477 if (parser->tok == TOKEN_IDENT)
2478 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2480 if (typevar || parser->tok == TOKEN_TYPENAME) {
2482 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2483 if (parsewarning(parser, WARN_EXTENSIONS,
2484 "current standard does not allow variable declarations in for-loop initializers"))
2488 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2491 else if (parser->tok != ';')
2493 initexpr = parse_expression_leave(parser, false, false, false);
2498 /* move on to condition */
2499 if (parser->tok != ';') {
2500 parseerror(parser, "expected semicolon after for-loop initializer");
2503 if (!parser_next(parser)) {
2504 parseerror(parser, "expected for-loop condition");
2508 /* parse the condition */
2509 if (parser->tok != ';') {
2510 cond = parse_expression_leave(parser, false, true, false);
2515 /* move on to incrementor */
2516 if (parser->tok != ';') {
2517 parseerror(parser, "expected semicolon after for-loop initializer");
2520 if (!parser_next(parser)) {
2521 parseerror(parser, "expected for-loop condition");
2525 /* parse the incrementor */
2526 if (parser->tok != ')') {
2527 lex_ctx_t condctx = parser_ctx(parser);
2528 increment = parse_expression_leave(parser, false, false, false);
2531 if (!ast_side_effects(increment)) {
2532 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2538 if (parser->tok != ')') {
2539 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2542 /* parse into the 'then' branch */
2543 if (!parser_next(parser)) {
2544 parseerror(parser, "expected for-loop body");
2547 if (!parse_statement_or_block(parser, &ontrue))
2551 cond = process_condition(parser, cond, &ifnot);
2555 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2556 *out = (ast_expression*)aloop;
2558 if (!parser_leaveblock(parser)) {
2564 if (initexpr) ast_unref(initexpr);
2565 if (cond) ast_unref(cond);
2566 if (increment) ast_unref(increment);
2567 (void)!parser_leaveblock(parser);
2571 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2573 ast_expression *exp = NULL;
2574 ast_expression *var = NULL;
2575 ast_return *ret = NULL;
2576 ast_value *retval = parser->function->return_value;
2577 ast_value *expected = parser->function->vtype;
2579 lex_ctx_t ctx = parser_ctx(parser);
2581 (void)block; /* not touching */
2583 if (!parser_next(parser)) {
2584 parseerror(parser, "expected return expression");
2588 /* return assignments */
2589 if (parser->tok == '=') {
2590 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
2591 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
2595 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
2597 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
2598 parseerror(parser, "invalid return type: `%s'", ty1);
2602 if (!parser_next(parser)) {
2603 parseerror(parser, "expected return assignment expression");
2607 if (!(exp = parse_expression_leave(parser, false, false, false)))
2610 /* prepare the return value */
2612 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
2613 ast_type_adopt(retval, expected->expression.next);
2614 parser->function->return_value = retval;
2617 if (!ast_compare_type(exp, (ast_expression*)retval)) {
2618 char ty1[1024], ty2[1024];
2619 ast_type_to_string(exp, ty1, sizeof(ty1));
2620 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
2621 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
2624 /* store to 'return' local variable */
2625 var = (ast_expression*)ast_store_new(
2627 type_store_instr[expected->expression.next->vtype],
2628 (ast_expression*)retval, exp);
2635 if (parser->tok != ';')
2636 parseerror(parser, "missing semicolon after return assignment");
2637 else if (!parser_next(parser))
2638 parseerror(parser, "parse error after return assignment");
2644 if (parser->tok != ';') {
2645 exp = parse_expression(parser, false, false);
2649 if (exp->vtype != TYPE_NIL &&
2650 exp->vtype != ((ast_expression*)expected)->next->vtype)
2652 parseerror(parser, "return with invalid expression");
2655 ret = ast_return_new(ctx, exp);
2661 if (!parser_next(parser))
2662 parseerror(parser, "parse error");
2664 if (!retval && expected->expression.next->vtype != TYPE_VOID)
2666 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2668 ret = ast_return_new(ctx, (ast_expression*)retval);
2670 *out = (ast_expression*)ret;
2674 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2677 unsigned int levels = 0;
2678 lex_ctx_t ctx = parser_ctx(parser);
2679 const char **loops = (is_continue ? parser->continues : parser->breaks);
2681 (void)block; /* not touching */
2682 if (!parser_next(parser)) {
2683 parseerror(parser, "expected semicolon or loop label");
2687 if (!vec_size(loops)) {
2689 parseerror(parser, "`continue` can only be used inside loops");
2691 parseerror(parser, "`break` can only be used inside loops or switches");
2694 if (parser->tok == TOKEN_IDENT) {
2695 if (!OPTS_FLAG(LOOP_LABELS))
2696 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2697 i = vec_size(loops);
2699 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2702 parseerror(parser, "no such loop to %s: `%s`",
2703 (is_continue ? "continue" : "break out of"),
2704 parser_tokval(parser));
2709 if (!parser_next(parser)) {
2710 parseerror(parser, "expected semicolon");
2715 if (parser->tok != ';') {
2716 parseerror(parser, "expected semicolon");
2720 if (!parser_next(parser))
2721 parseerror(parser, "parse error");
2723 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2727 /* returns true when it was a variable qualifier, false otherwise!
2728 * on error, cvq is set to CV_WRONG
2730 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2732 bool had_const = false;
2733 bool had_var = false;
2734 bool had_noref = false;
2735 bool had_attrib = false;
2736 bool had_static = false;
2741 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2743 /* parse an attribute */
2744 if (!parser_next(parser)) {
2745 parseerror(parser, "expected attribute after `[[`");
2749 if (!strcmp(parser_tokval(parser), "noreturn")) {
2750 flags |= AST_FLAG_NORETURN;
2751 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2752 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2757 else if (!strcmp(parser_tokval(parser), "noref")) {
2759 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2760 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2765 else if (!strcmp(parser_tokval(parser), "inline")) {
2766 flags |= AST_FLAG_INLINE;
2767 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2768 parseerror(parser, "`inline` attribute has no parameters, expected `]]`");
2773 else if (!strcmp(parser_tokval(parser), "eraseable")) {
2774 flags |= AST_FLAG_ERASEABLE;
2775 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2776 parseerror(parser, "`eraseable` attribute has no parameters, expected `]]`");
2781 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
2782 flags |= AST_FLAG_ALIAS;
2785 if (!parser_next(parser)) {
2786 parseerror(parser, "parse error in attribute");
2790 if (parser->tok == '(') {
2791 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2792 parseerror(parser, "`alias` attribute missing parameter");
2796 *message = util_strdup(parser_tokval(parser));
2798 if (!parser_next(parser)) {
2799 parseerror(parser, "parse error in attribute");
2803 if (parser->tok != ')') {
2804 parseerror(parser, "`alias` attribute expected `)` after parameter");
2808 if (!parser_next(parser)) {
2809 parseerror(parser, "parse error in attribute");
2814 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2815 parseerror(parser, "`alias` attribute expected `]]`");
2819 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2820 flags |= AST_FLAG_DEPRECATED;
2823 if (!parser_next(parser)) {
2824 parseerror(parser, "parse error in attribute");
2828 if (parser->tok == '(') {
2829 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2830 parseerror(parser, "`deprecated` attribute missing parameter");
2834 *message = util_strdup(parser_tokval(parser));
2836 if (!parser_next(parser)) {
2837 parseerror(parser, "parse error in attribute");
2841 if(parser->tok != ')') {
2842 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2846 if (!parser_next(parser)) {
2847 parseerror(parser, "parse error in attribute");
2852 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2853 parseerror(parser, "`deprecated` attribute expected `]]`");
2856 if (*message) mem_d(*message);
2864 /* Skip tokens until we hit a ]] */
2865 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2866 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2867 if (!parser_next(parser)) {
2868 parseerror(parser, "error inside attribute");
2875 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2877 else if (!strcmp(parser_tokval(parser), "const"))
2879 else if (!strcmp(parser_tokval(parser), "var"))
2881 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2883 else if (!strcmp(parser_tokval(parser), "noref"))
2885 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2890 if (!parser_next(parser))
2900 *is_static = had_static;
2904 parseerror(parser, "parse error after variable qualifier");
2909 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2910 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2915 /* skip the 'while' and get the body */
2916 if (!parser_next(parser)) {
2917 if (OPTS_FLAG(LOOP_LABELS))
2918 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2920 parseerror(parser, "expected 'switch' operand in parenthesis");
2924 if (parser->tok == ':') {
2925 if (!OPTS_FLAG(LOOP_LABELS))
2926 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2927 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2928 parseerror(parser, "expected loop label");
2931 label = util_strdup(parser_tokval(parser));
2932 if (!parser_next(parser)) {
2934 parseerror(parser, "expected 'switch' operand in parenthesis");
2939 if (parser->tok != '(') {
2940 parseerror(parser, "expected 'switch' operand in parenthesis");
2944 vec_push(parser->breaks, label);
2946 rv = parse_switch_go(parser, block, out);
2949 if (vec_last(parser->breaks) != label) {
2950 parseerror(parser, "internal error: label stack corrupted");
2956 vec_pop(parser->breaks);
2961 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
2963 ast_expression *operand;
2966 ast_switch *switchnode;
2967 ast_switch_case swcase;
2970 bool noref, is_static;
2971 uint32_t qflags = 0;
2973 lex_ctx_t ctx = parser_ctx(parser);
2975 (void)block; /* not touching */
2978 /* parse into the expression */
2979 if (!parser_next(parser)) {
2980 parseerror(parser, "expected switch operand");
2983 /* parse the operand */
2984 operand = parse_expression_leave(parser, false, false, false);
2988 switchnode = ast_switch_new(ctx, operand);
2991 if (parser->tok != ')') {
2992 ast_delete(switchnode);
2993 parseerror(parser, "expected closing paren after 'switch' operand");
2997 /* parse over the opening paren */
2998 if (!parser_next(parser) || parser->tok != '{') {
2999 ast_delete(switchnode);
3000 parseerror(parser, "expected list of cases");
3004 if (!parser_next(parser)) {
3005 ast_delete(switchnode);
3006 parseerror(parser, "expected 'case' or 'default'");
3010 /* new block; allow some variables to be declared here */
3011 parser_enterblock(parser);
3014 if (parser->tok == TOKEN_IDENT)
3015 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3016 if (typevar || parser->tok == TOKEN_TYPENAME) {
3017 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3018 ast_delete(switchnode);
3023 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3025 if (cvq == CV_WRONG) {
3026 ast_delete(switchnode);
3029 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3030 ast_delete(switchnode);
3039 while (parser->tok != '}') {
3040 ast_block *caseblock;
3042 if (!strcmp(parser_tokval(parser), "case")) {
3043 if (!parser_next(parser)) {
3044 ast_delete(switchnode);
3045 parseerror(parser, "expected expression for case");
3048 swcase.value = parse_expression_leave(parser, false, false, false);
3049 if (!swcase.value) {
3050 ast_delete(switchnode);
3051 parseerror(parser, "expected expression for case");
3054 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3055 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3056 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3062 else if (!strcmp(parser_tokval(parser), "default")) {
3063 swcase.value = NULL;
3064 if (!parser_next(parser)) {
3065 ast_delete(switchnode);
3066 parseerror(parser, "expected colon");
3071 ast_delete(switchnode);
3072 parseerror(parser, "expected 'case' or 'default'");
3076 /* Now the colon and body */
3077 if (parser->tok != ':') {
3078 if (swcase.value) ast_unref(swcase.value);
3079 ast_delete(switchnode);
3080 parseerror(parser, "expected colon");
3084 if (!parser_next(parser)) {
3085 if (swcase.value) ast_unref(swcase.value);
3086 ast_delete(switchnode);
3087 parseerror(parser, "expected statements or case");
3090 caseblock = ast_block_new(parser_ctx(parser));
3092 if (swcase.value) ast_unref(swcase.value);
3093 ast_delete(switchnode);
3096 swcase.code = (ast_expression*)caseblock;
3097 vec_push(switchnode->cases, swcase);
3099 ast_expression *expr;
3100 if (parser->tok == '}')
3102 if (parser->tok == TOKEN_KEYWORD) {
3103 if (!strcmp(parser_tokval(parser), "case") ||
3104 !strcmp(parser_tokval(parser), "default"))
3109 if (!parse_statement(parser, caseblock, &expr, true)) {
3110 ast_delete(switchnode);
3115 if (!ast_block_add_expr(caseblock, expr)) {
3116 ast_delete(switchnode);
3122 parser_leaveblock(parser);
3125 if (parser->tok != '}') {
3126 ast_delete(switchnode);
3127 parseerror(parser, "expected closing paren of case list");
3130 if (!parser_next(parser)) {
3131 ast_delete(switchnode);
3132 parseerror(parser, "parse error after switch");
3135 *out = (ast_expression*)switchnode;
3139 /* parse computed goto sides */
3140 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3141 ast_expression *on_true;
3142 ast_expression *on_false;
3143 ast_expression *cond;
3148 if (ast_istype(*side, ast_ternary)) {
3149 ast_ternary *tern = (ast_ternary*)*side;
3150 on_true = parse_goto_computed(parser, &tern->on_true);
3151 on_false = parse_goto_computed(parser, &tern->on_false);
3153 if (!on_true || !on_false) {
3154 parseerror(parser, "expected label or expression in ternary");
3155 if (on_true) ast_unref(on_true);
3156 if (on_false) ast_unref(on_false);
3164 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3165 } else if (ast_istype(*side, ast_label)) {
3166 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3167 ast_goto_set_label(gt, ((ast_label*)*side));
3169 return (ast_expression*)gt;
3174 static bool parse_goto(parser_t *parser, ast_expression **out)
3176 ast_goto *gt = NULL;
3177 ast_expression *lbl;
3179 if (!parser_next(parser))
3182 if (parser->tok != TOKEN_IDENT) {
3183 ast_expression *expression;
3185 /* could be an expression i.e computed goto :-) */
3186 if (parser->tok != '(') {
3187 parseerror(parser, "expected label name after `goto`");
3191 /* failed to parse expression for goto */
3192 if (!(expression = parse_expression(parser, false, true)) ||
3193 !(*out = parse_goto_computed(parser, &expression))) {
3194 parseerror(parser, "invalid goto expression");
3196 ast_unref(expression);
3203 /* not computed goto */
3204 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3205 lbl = parser_find_label(parser, gt->name);
3207 if (!ast_istype(lbl, ast_label)) {
3208 parseerror(parser, "internal error: label is not an ast_label");
3212 ast_goto_set_label(gt, (ast_label*)lbl);
3215 vec_push(parser->gotos, gt);
3217 if (!parser_next(parser) || parser->tok != ';') {
3218 parseerror(parser, "semicolon expected after goto label");
3221 if (!parser_next(parser)) {
3222 parseerror(parser, "parse error after goto");
3226 *out = (ast_expression*)gt;
3230 static bool parse_skipwhite(parser_t *parser)
3233 if (!parser_next(parser))
3235 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3236 return parser->tok < TOKEN_ERROR;
3239 static bool parse_eol(parser_t *parser)
3241 if (!parse_skipwhite(parser))
3243 return parser->tok == TOKEN_EOL;
3246 static bool parse_pragma_do(parser_t *parser)
3248 if (!parser_next(parser) ||
3249 parser->tok != TOKEN_IDENT ||
3250 strcmp(parser_tokval(parser), "pragma"))
3252 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3255 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3256 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3260 if (!strcmp(parser_tokval(parser), "noref")) {
3261 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3262 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3265 parser->noref = !!parser_token(parser)->constval.i;
3266 if (!parse_eol(parser)) {
3267 parseerror(parser, "parse error after `noref` pragma");
3273 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3280 static bool parse_pragma(parser_t *parser)
3283 parser->lex->flags.preprocessing = true;
3284 parser->lex->flags.mergelines = true;
3285 rv = parse_pragma_do(parser);
3286 if (parser->tok != TOKEN_EOL) {
3287 parseerror(parser, "junk after pragma");
3290 parser->lex->flags.preprocessing = false;
3291 parser->lex->flags.mergelines = false;
3292 if (!parser_next(parser)) {
3293 parseerror(parser, "parse error after pragma");
3299 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3301 bool noref, is_static;
3303 uint32_t qflags = 0;
3304 ast_value *typevar = NULL;
3305 char *vstring = NULL;
3309 if (parser->tok == TOKEN_IDENT)
3310 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3312 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3314 /* local variable */
3316 parseerror(parser, "cannot declare a variable from here");
3319 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3320 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3323 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3327 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3329 if (cvq == CV_WRONG)
3331 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3333 else if (parser->tok == TOKEN_KEYWORD)
3335 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3340 if (!parser_next(parser)) {
3341 parseerror(parser, "parse error after __builtin_debug_printtype");
3345 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3347 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3348 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3349 if (!parser_next(parser)) {
3350 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3356 if (!parse_statement(parser, block, out, allow_cases))
3359 con_out("__builtin_debug_printtype: got no output node\n");
3362 ast_type_to_string(*out, ty, sizeof(ty));
3363 con_out("__builtin_debug_printtype: `%s`\n", ty);
3368 else if (!strcmp(parser_tokval(parser), "return"))
3370 return parse_return(parser, block, out);
3372 else if (!strcmp(parser_tokval(parser), "if"))
3374 return parse_if(parser, block, out);
3376 else if (!strcmp(parser_tokval(parser), "while"))
3378 return parse_while(parser, block, out);
3380 else if (!strcmp(parser_tokval(parser), "do"))
3382 return parse_dowhile(parser, block, out);
3384 else if (!strcmp(parser_tokval(parser), "for"))
3386 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3387 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3390 return parse_for(parser, block, out);
3392 else if (!strcmp(parser_tokval(parser), "break"))
3394 return parse_break_continue(parser, block, out, false);
3396 else if (!strcmp(parser_tokval(parser), "continue"))
3398 return parse_break_continue(parser, block, out, true);
3400 else if (!strcmp(parser_tokval(parser), "switch"))
3402 return parse_switch(parser, block, out);
3404 else if (!strcmp(parser_tokval(parser), "case") ||
3405 !strcmp(parser_tokval(parser), "default"))
3408 parseerror(parser, "unexpected 'case' label");
3413 else if (!strcmp(parser_tokval(parser), "goto"))
3415 return parse_goto(parser, out);
3417 else if (!strcmp(parser_tokval(parser), "typedef"))
3419 if (!parser_next(parser)) {
3420 parseerror(parser, "expected type definition after 'typedef'");
3423 return parse_typedef(parser);
3425 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3428 else if (parser->tok == '{')
3431 inner = parse_block(parser);
3434 *out = (ast_expression*)inner;
3437 else if (parser->tok == ':')
3441 if (!parser_next(parser)) {
3442 parseerror(parser, "expected label name");
3445 if (parser->tok != TOKEN_IDENT) {
3446 parseerror(parser, "label must be an identifier");
3449 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3451 if (!label->undefined) {
3452 parseerror(parser, "label `%s` already defined", label->name);
3455 label->undefined = false;
3458 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3459 vec_push(parser->labels, label);
3461 *out = (ast_expression*)label;
3462 if (!parser_next(parser)) {
3463 parseerror(parser, "parse error after label");
3466 for (i = 0; i < vec_size(parser->gotos); ++i) {
3467 if (!strcmp(parser->gotos[i]->name, label->name)) {
3468 ast_goto_set_label(parser->gotos[i], label);
3469 vec_remove(parser->gotos, i, 1);
3475 else if (parser->tok == ';')
3477 if (!parser_next(parser)) {
3478 parseerror(parser, "parse error after empty statement");
3485 lex_ctx_t ctx = parser_ctx(parser);
3486 ast_expression *exp = parse_expression(parser, false, false);
3490 if (!ast_side_effects(exp)) {
3491 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3498 static bool parse_enum(parser_t *parser)
3501 bool reverse = false;
3503 ast_value **values = NULL;
3504 ast_value *var = NULL;
3507 ast_expression *old;
3509 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3510 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3514 /* enumeration attributes (can add more later) */
3515 if (parser->tok == ':') {
3516 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3517 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3522 if (!strcmp(parser_tokval(parser), "flag")) {
3526 else if (!strcmp(parser_tokval(parser), "reverse")) {
3530 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3534 if (!parser_next(parser) || parser->tok != '{') {
3535 parseerror(parser, "expected `{` after enum attribute ");
3541 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3542 if (parser->tok == '}') {
3543 /* allow an empty enum */
3546 parseerror(parser, "expected identifier or `}`");
3550 old = parser_find_field(parser, parser_tokval(parser));
3552 old = parser_find_global(parser, parser_tokval(parser));
3554 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3555 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3559 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3560 vec_push(values, var);
3561 var->cvq = CV_CONST;
3562 var->hasvalue = true;
3564 /* for flagged enumerations increment in POTs of TWO */
3565 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3566 parser_addglobal(parser, var->name, (ast_expression*)var);
3568 if (!parser_next(parser)) {
3569 parseerror(parser, "expected `=`, `}` or comma after identifier");
3573 if (parser->tok == ',')
3575 if (parser->tok == '}')
3577 if (parser->tok != '=') {
3578 parseerror(parser, "expected `=`, `}` or comma after identifier");
3582 if (!parser_next(parser)) {
3583 parseerror(parser, "expected expression after `=`");
3587 /* We got a value! */
3588 old = parse_expression_leave(parser, true, false, false);
3589 asvalue = (ast_value*)old;
3590 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3591 compile_error(ast_ctx(var), "constant value or expression expected");
3594 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3596 if (parser->tok == '}')
3598 if (parser->tok != ',') {
3599 parseerror(parser, "expected `}` or comma after expression");
3604 /* patch them all (for reversed attribute) */
3607 for (i = 0; i < vec_size(values); i++)
3608 values[i]->constval.vfloat = vec_size(values) - i - 1;
3611 if (parser->tok != '}') {
3612 parseerror(parser, "internal error: breaking without `}`");
3616 if (!parser_next(parser) || parser->tok != ';') {
3617 parseerror(parser, "expected semicolon after enumeration");
3621 if (!parser_next(parser)) {
3622 parseerror(parser, "parse error after enumeration");
3634 static bool parse_block_into(parser_t *parser, ast_block *block)
3638 parser_enterblock(parser);
3640 if (!parser_next(parser)) { /* skip the '{' */
3641 parseerror(parser, "expected function body");
3645 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3647 ast_expression *expr = NULL;
3648 if (parser->tok == '}')
3651 if (!parse_statement(parser, block, &expr, false)) {
3652 /* parseerror(parser, "parse error"); */
3658 if (!ast_block_add_expr(block, expr)) {
3665 if (parser->tok != '}') {
3668 (void)parser_next(parser);
3672 if (!parser_leaveblock(parser))
3674 return retval && !!block;
3677 static ast_block* parse_block(parser_t *parser)
3680 block = ast_block_new(parser_ctx(parser));
3683 if (!parse_block_into(parser, block)) {
3684 ast_block_delete(block);
3690 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3692 if (parser->tok == '{') {
3693 *out = (ast_expression*)parse_block(parser);
3696 return parse_statement(parser, NULL, out, false);
3699 static bool create_vector_members(ast_value *var, ast_member **me)
3702 size_t len = strlen(var->name);
3704 for (i = 0; i < 3; ++i) {
3705 char *name = (char*)mem_a(len+3);
3706 memcpy(name, var->name, len);
3708 name[len+1] = 'x'+i;
3710 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3719 do { ast_member_delete(me[--i]); } while(i);
3723 static bool parse_function_body(parser_t *parser, ast_value *var)
3725 ast_block *block = NULL;
3730 ast_expression *framenum = NULL;
3731 ast_expression *nextthink = NULL;
3732 /* None of the following have to be deleted */
3733 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3734 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3735 bool has_frame_think;
3739 has_frame_think = false;
3740 old = parser->function;
3742 if (var->expression.flags & AST_FLAG_ALIAS) {
3743 parseerror(parser, "function aliases cannot have bodies");
3747 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3748 parseerror(parser, "gotos/labels leaking");
3752 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
3753 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3754 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
3760 if (parser->tok == '[') {
3761 /* got a frame definition: [ framenum, nextthink ]
3762 * this translates to:
3763 * self.frame = framenum;
3764 * self.nextthink = time + 0.1;
3765 * self.think = nextthink;
3769 fld_think = parser_find_field(parser, "think");
3770 fld_nextthink = parser_find_field(parser, "nextthink");
3771 fld_frame = parser_find_field(parser, "frame");
3772 if (!fld_think || !fld_nextthink || !fld_frame) {
3773 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3774 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3777 gbl_time = parser_find_global(parser, "time");
3778 gbl_self = parser_find_global(parser, "self");
3779 if (!gbl_time || !gbl_self) {
3780 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3781 parseerror(parser, "please declare the following globals: `time`, `self`");
3785 if (!parser_next(parser))
3788 framenum = parse_expression_leave(parser, true, false, false);
3790 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3793 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3794 ast_unref(framenum);
3795 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3799 if (parser->tok != ',') {
3800 ast_unref(framenum);
3801 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3802 parseerror(parser, "Got a %i\n", parser->tok);
3806 if (!parser_next(parser)) {
3807 ast_unref(framenum);
3811 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3813 /* qc allows the use of not-yet-declared functions here
3814 * - this automatically creates a prototype */
3815 ast_value *thinkfunc;
3816 ast_expression *functype = fld_think->next;
3818 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
3819 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
3820 ast_unref(framenum);
3821 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3824 ast_type_adopt(thinkfunc, functype);
3826 if (!parser_next(parser)) {
3827 ast_unref(framenum);
3828 ast_delete(thinkfunc);
3832 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3834 nextthink = (ast_expression*)thinkfunc;
3837 nextthink = parse_expression_leave(parser, true, false, false);
3839 ast_unref(framenum);
3840 parseerror(parser, "expected a think-function in [frame,think] notation");
3845 if (!ast_istype(nextthink, ast_value)) {
3846 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3850 if (retval && parser->tok != ']') {
3851 parseerror(parser, "expected closing `]` for [frame,think] notation");
3855 if (retval && !parser_next(parser)) {
3859 if (retval && parser->tok != '{') {
3860 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3865 ast_unref(nextthink);
3866 ast_unref(framenum);
3870 has_frame_think = true;
3873 block = ast_block_new(parser_ctx(parser));
3875 parseerror(parser, "failed to allocate block");
3876 if (has_frame_think) {
3877 ast_unref(nextthink);
3878 ast_unref(framenum);
3883 if (has_frame_think) {
3885 ast_expression *self_frame;
3886 ast_expression *self_nextthink;
3887 ast_expression *self_think;
3888 ast_expression *time_plus_1;
3889 ast_store *store_frame;
3890 ast_store *store_nextthink;
3891 ast_store *store_think;
3893 ctx = parser_ctx(parser);
3894 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3895 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3896 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3898 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3899 gbl_time, (ast_expression*)fold_constgen_float(parser->fold, 0.1f));
3901 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3902 if (self_frame) ast_delete(self_frame);
3903 if (self_nextthink) ast_delete(self_nextthink);
3904 if (self_think) ast_delete(self_think);
3905 if (time_plus_1) ast_delete(time_plus_1);
3911 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3912 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3913 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3916 ast_delete(self_frame);
3919 if (!store_nextthink) {
3920 ast_delete(self_nextthink);
3924 ast_delete(self_think);
3928 if (store_frame) ast_delete(store_frame);
3929 if (store_nextthink) ast_delete(store_nextthink);
3930 if (store_think) ast_delete(store_think);
3933 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3934 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3935 !ast_block_add_expr(block, (ast_expression*)store_think))
3942 parseerror(parser, "failed to generate code for [frame,think]");
3943 ast_unref(nextthink);
3944 ast_unref(framenum);
3950 if (var->hasvalue) {
3951 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
3952 ast_block_delete(block);
3956 func = ast_function_new(ast_ctx(var), var->name, var);
3958 parseerror(parser, "failed to allocate function for `%s`", var->name);
3959 ast_block_delete(block);
3962 vec_push(parser->functions, func);
3964 parser_enterblock(parser);
3966 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3968 ast_value *param = var->expression.params[parami];
3971 if (param->expression.vtype != TYPE_VECTOR &&
3972 (param->expression.vtype != TYPE_FIELD ||
3973 param->expression.next->vtype != TYPE_VECTOR))
3978 if (!create_vector_members(param, me)) {
3979 ast_block_delete(block);
3983 for (e = 0; e < 3; ++e) {
3984 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3985 ast_block_collect(block, (ast_expression*)me[e]);
3989 if (var->argcounter) {
3990 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
3991 parser_addlocal(parser, argc->name, (ast_expression*)argc);
3995 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
3997 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
3998 varargs->expression.flags |= AST_FLAG_IS_VARARG;
3999 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4000 varargs->expression.count = 0;
4001 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4002 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4003 ast_delete(varargs);
4004 ast_block_delete(block);
4007 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4008 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4009 ast_delete(varargs);
4010 ast_block_delete(block);
4013 func->varargs = varargs;
4014 func->fixedparams = (ast_value*)fold_constgen_float(parser->fold, vec_size(var->expression.params));
4017 parser->function = func;
4018 if (!parse_block_into(parser, block)) {
4019 ast_block_delete(block);
4023 vec_push(func->blocks, block);
4026 parser->function = old;
4027 if (!parser_leaveblock(parser))
4029 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4030 parseerror(parser, "internal error: local scopes left");
4034 if (parser->tok == ';')
4035 return parser_next(parser);
4036 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4037 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4041 (void)!parser_leaveblock(parser);
4042 vec_pop(parser->functions);
4043 ast_function_delete(func);
4044 var->constval.vfunc = NULL;
4047 parser->function = old;
4051 static ast_expression *array_accessor_split(
4056 ast_expression *left,
4057 ast_expression *right
4063 lex_ctx_t ctx = ast_ctx(array);
4065 if (!left || !right) {
4066 if (left) ast_delete(left);
4067 if (right) ast_delete(right);
4071 cmp = ast_binary_new(ctx, INSTR_LT,
4072 (ast_expression*)index,
4073 (ast_expression*)fold_constgen_float(parser->fold, middle));
4077 parseerror(parser, "internal error: failed to create comparison for array setter");
4081 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4083 ast_delete(cmp); /* will delete left and right */
4084 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4088 return (ast_expression*)ifthen;
4091 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4093 lex_ctx_t ctx = ast_ctx(array);
4095 if (from+1 == afterend) {
4096 /* set this value */
4099 ast_array_index *subscript;
4101 int assignop = type_store_instr[value->expression.vtype];
4103 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4104 assignop = INSTR_STORE_V;
4106 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4110 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4112 ast_delete(subscript);
4116 block = ast_block_new(ctx);
4122 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4127 ret = ast_return_new(ctx, NULL);
4133 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4138 return (ast_expression*)block;
4140 ast_expression *left, *right;
4141 size_t diff = afterend - from;
4142 size_t middle = from + diff/2;
4143 left = array_setter_node(parser, array, index, value, from, middle);
4144 right = array_setter_node(parser, array, index, value, middle, afterend);
4145 return array_accessor_split(parser, array, index, middle, left, right);
4149 static ast_expression *array_field_setter_node(
4158 lex_ctx_t ctx = ast_ctx(array);
4160 if (from+1 == afterend) {
4161 /* set this value */
4164 ast_entfield *entfield;
4165 ast_array_index *subscript;
4167 int assignop = type_storep_instr[value->expression.vtype];
4169 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4170 assignop = INSTR_STOREP_V;
4172 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4176 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4177 subscript->expression.vtype = TYPE_FIELD;
4179 entfield = ast_entfield_new_force(ctx,
4180 (ast_expression*)entity,
4181 (ast_expression*)subscript,
4182 (ast_expression*)subscript);
4184 ast_delete(subscript);
4188 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4190 ast_delete(entfield);
4194 block = ast_block_new(ctx);
4200 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4205 ret = ast_return_new(ctx, NULL);
4211 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4216 return (ast_expression*)block;
4218 ast_expression *left, *right;
4219 size_t diff = afterend - from;
4220 size_t middle = from + diff/2;
4221 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4222 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4223 return array_accessor_split(parser, array, index, middle, left, right);
4227 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4229 lex_ctx_t ctx = ast_ctx(array);
4231 if (from+1 == afterend) {
4233 ast_array_index *subscript;
4235 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from));
4239 ret = ast_return_new(ctx, (ast_expression*)subscript);
4241 ast_delete(subscript);
4245 return (ast_expression*)ret;
4247 ast_expression *left, *right;
4248 size_t diff = afterend - from;
4249 size_t middle = from + diff/2;
4250 left = array_getter_node(parser, array, index, from, middle);
4251 right = array_getter_node(parser, array, index, middle, afterend);
4252 return array_accessor_split(parser, array, index, middle, left, right);
4256 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4258 ast_function *func = NULL;
4259 ast_value *fval = NULL;
4260 ast_block *body = NULL;
4262 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4264 parseerror(parser, "failed to create accessor function value");
4268 func = ast_function_new(ast_ctx(array), funcname, fval);
4271 parseerror(parser, "failed to create accessor function node");
4275 body = ast_block_new(ast_ctx(array));
4277 parseerror(parser, "failed to create block for array accessor");
4283 vec_push(func->blocks, body);
4286 vec_push(parser->accessors, fval);
4291 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4293 ast_value *index = NULL;
4294 ast_value *value = NULL;
4298 if (!ast_istype(array->expression.next, ast_value)) {
4299 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4303 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4305 func = fval->constval.vfunc;
4306 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4308 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4309 value = ast_value_copy((ast_value*)array->expression.next);
4311 if (!index || !value) {
4312 parseerror(parser, "failed to create locals for array accessor");
4315 (void)!ast_value_set_name(value, "value"); /* not important */
4316 vec_push(fval->expression.params, index);
4317 vec_push(fval->expression.params, value);
4319 array->setter = fval;
4322 if (index) ast_delete(index);
4323 if (value) ast_delete(value);
4329 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4331 ast_expression *root = NULL;
4332 root = array_setter_node(parser, array,
4333 array->setter->expression.params[0],
4334 array->setter->expression.params[1],
4335 0, array->expression.count);
4337 parseerror(parser, "failed to build accessor search tree");
4340 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4347 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4349 if (!parser_create_array_setter_proto(parser, array, funcname))
4351 return parser_create_array_setter_impl(parser, array);
4354 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4356 ast_expression *root = NULL;
4357 ast_value *entity = NULL;
4358 ast_value *index = NULL;
4359 ast_value *value = NULL;
4363 if (!ast_istype(array->expression.next, ast_value)) {
4364 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4368 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4370 func = fval->constval.vfunc;
4371 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4373 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4374 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4375 value = ast_value_copy((ast_value*)array->expression.next);
4376 if (!entity || !index || !value) {
4377 parseerror(parser, "failed to create locals for array accessor");
4380 (void)!ast_value_set_name(value, "value"); /* not important */
4381 vec_push(fval->expression.params, entity);
4382 vec_push(fval->expression.params, index);
4383 vec_push(fval->expression.params, value);
4385 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4387 parseerror(parser, "failed to build accessor search tree");
4391 array->setter = fval;
4392 return ast_block_add_expr(func->blocks[0], root);
4394 if (entity) ast_delete(entity);
4395 if (index) ast_delete(index);
4396 if (value) ast_delete(value);
4397 if (root) ast_delete(root);
4403 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4405 ast_value *index = NULL;
4409 /* NOTE: checking array->expression.next rather than elemtype since
4410 * for fields elemtype is a temporary fieldtype.
4412 if (!ast_istype(array->expression.next, ast_value)) {
4413 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4417 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4419 func = fval->constval.vfunc;
4420 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4422 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4425 parseerror(parser, "failed to create locals for array accessor");
4428 vec_push(fval->expression.params, index);
4430 array->getter = fval;
4433 if (index) ast_delete(index);
4439 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4441 ast_expression *root = NULL;
4443 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4445 parseerror(parser, "failed to build accessor search tree");
4448 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4455 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4457 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4459 return parser_create_array_getter_impl(parser, array);
4462 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4463 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4471 bool variadic = false;
4472 ast_value *varparam = NULL;
4473 char *argcounter = NULL;
4475 ctx = parser_ctx(parser);
4477 /* for the sake of less code we parse-in in this function */
4478 if (!parser_next(parser)) {
4480 parseerror(parser, "expected parameter list");
4486 /* parse variables until we hit a closing paren */
4487 while (parser->tok != ')') {
4489 /* there must be commas between them */
4490 if (parser->tok != ',') {
4491 parseerror(parser, "expected comma or end of parameter list");
4494 if (!parser_next(parser)) {
4495 parseerror(parser, "expected parameter");
4501 if (parser->tok == TOKEN_DOTS) {
4502 /* '...' indicates a varargs function */
4504 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4505 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4508 if (parser->tok == TOKEN_IDENT) {
4509 argcounter = util_strdup(parser_tokval(parser));
4510 if (!parser_next(parser) || parser->tok != ')') {
4511 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4518 /* for anything else just parse a typename */
4519 param = parse_typename(parser, NULL, NULL);
4522 vec_push(params, param);
4523 if (param->expression.vtype >= TYPE_VARIANT) {
4524 char tname[1024]; /* typename is reserved in C++ */
4525 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4526 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4529 /* type-restricted varargs */
4530 if (parser->tok == TOKEN_DOTS) {
4532 varparam = vec_last(params);
4534 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4535 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4538 if (parser->tok == TOKEN_IDENT) {
4539 argcounter = util_strdup(parser_tokval(parser));
4540 if (!parser_next(parser) || parser->tok != ')') {
4541 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4549 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4553 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4554 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4557 if (!parser_next(parser)) {
4558 parseerror(parser, "parse error after typename");
4562 /* now turn 'var' into a function type */
4563 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4564 fval->expression.next = (ast_expression*)var;
4566 fval->expression.flags |= AST_FLAG_VARIADIC;
4569 var->expression.params = params;
4570 var->expression.varparam = (ast_expression*)varparam;
4571 var->argcounter = argcounter;
4580 ast_delete(varparam);
4582 for (i = 0; i < vec_size(params); ++i)
4583 ast_delete(params[i]);
4588 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4590 ast_expression *cexp;
4591 ast_value *cval, *tmp;
4594 ctx = parser_ctx(parser);
4596 if (!parser_next(parser)) {
4598 parseerror(parser, "expected array-size");
4602 if (parser->tok != ']') {
4603 cexp = parse_expression_leave(parser, true, false, false);
4605 if (!cexp || !ast_istype(cexp, ast_value)) {
4609 parseerror(parser, "expected array-size as constant positive integer");
4612 cval = (ast_value*)cexp;
4619 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4620 tmp->expression.next = (ast_expression*)var;
4624 if (cval->expression.vtype == TYPE_INTEGER)
4625 tmp->expression.count = cval->constval.vint;
4626 else if (cval->expression.vtype == TYPE_FLOAT)
4627 tmp->expression.count = cval->constval.vfloat;
4631 parseerror(parser, "array-size must be a positive integer constant");
4637 var->expression.count = -1;
4638 var->expression.flags |= AST_FLAG_ARRAY_INIT;
4641 if (parser->tok != ']') {
4643 parseerror(parser, "expected ']' after array-size");
4646 if (!parser_next(parser)) {
4648 parseerror(parser, "error after parsing array size");
4654 /* Parse a complete typename.
4655 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4656 * but when parsing variables separated by comma
4657 * 'storebase' should point to where the base-type should be kept.
4658 * The base type makes up every bit of type information which comes *before* the
4661 * The following will be parsed in its entirety:
4663 * The 'basetype' in this case is 'void()'
4664 * and if there's a comma after it, say:
4666 * then the type-information 'void()' can be stored in 'storebase'
4668 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4670 ast_value *var, *tmp;
4673 const char *name = NULL;
4674 bool isfield = false;
4675 bool wasarray = false;
4676 size_t morefields = 0;
4678 ctx = parser_ctx(parser);
4680 /* types may start with a dot */
4681 if (parser->tok == '.') {
4683 /* if we parsed a dot we need a typename now */
4684 if (!parser_next(parser)) {
4685 parseerror(parser, "expected typename for field definition");
4689 /* Further dots are handled seperately because they won't be part of the
4692 while (parser->tok == '.') {
4694 if (!parser_next(parser)) {
4695 parseerror(parser, "expected typename for field definition");
4700 if (parser->tok == TOKEN_IDENT)
4701 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4702 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4703 parseerror(parser, "expected typename");
4707 /* generate the basic type value */
4708 if (cached_typedef) {
4709 var = ast_value_copy(cached_typedef);
4710 ast_value_set_name(var, "<type(from_def)>");
4712 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4714 for (; morefields; --morefields) {
4715 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4716 tmp->expression.next = (ast_expression*)var;
4720 /* do not yet turn into a field - remember:
4721 * .void() foo; is a field too
4722 * .void()() foo; is a function
4726 if (!parser_next(parser)) {
4728 parseerror(parser, "parse error after typename");
4732 /* an opening paren now starts the parameter-list of a function
4733 * this is where original-QC has parameter lists.
4734 * We allow a single parameter list here.
4735 * Much like fteqcc we don't allow `float()() x`
4737 if (parser->tok == '(') {
4738 var = parse_parameter_list(parser, var);
4743 /* store the base if requested */
4745 *storebase = ast_value_copy(var);
4747 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4748 tmp->expression.next = (ast_expression*)*storebase;
4753 /* there may be a name now */
4754 if (parser->tok == TOKEN_IDENT) {
4755 name = util_strdup(parser_tokval(parser));
4757 if (!parser_next(parser)) {
4760 parseerror(parser, "error after variable or field declaration");
4765 /* now this may be an array */
4766 if (parser->tok == '[') {
4768 var = parse_arraysize(parser, var);
4770 if (name) mem_d(name);
4775 /* This is the point where we can turn it into a field */
4777 /* turn it into a field if desired */
4778 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4779 tmp->expression.next = (ast_expression*)var;
4783 /* now there may be function parens again */
4784 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4785 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4786 if (parser->tok == '(' && wasarray)
4787 parseerror(parser, "arrays as part of a return type is not supported");
4788 while (parser->tok == '(') {
4789 var = parse_parameter_list(parser, var);
4791 if (name) mem_d(name);
4796 /* finally name it */
4798 if (!ast_value_set_name(var, name)) {
4801 parseerror(parser, "internal error: failed to set name");
4804 /* free the name, ast_value_set_name duplicates */
4811 static bool parse_typedef(parser_t *parser)
4813 ast_value *typevar, *oldtype;
4814 ast_expression *old;
4816 typevar = parse_typename(parser, NULL, NULL);
4821 if ( (old = parser_find_var(parser, typevar->name)) ) {
4822 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4823 " -> `%s` has been declared here: %s:%i",
4824 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4825 ast_delete(typevar);
4829 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4830 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4831 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4832 ast_delete(typevar);
4836 vec_push(parser->_typedefs, typevar);
4837 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4839 if (parser->tok != ';') {
4840 parseerror(parser, "expected semicolon after typedef");
4843 if (!parser_next(parser)) {
4844 parseerror(parser, "parse error after typedef");
4851 static const char *cvq_to_str(int cvq) {
4853 case CV_NONE: return "none";
4854 case CV_VAR: return "`var`";
4855 case CV_CONST: return "`const`";
4856 default: return "<INVALID>";
4860 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4863 if (proto->cvq != var->cvq) {
4864 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4865 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4866 parser->tok == '='))
4868 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4869 "`%s` declared with different qualifiers: %s\n"
4870 " -> previous declaration here: %s:%i uses %s",
4871 var->name, cvq_to_str(var->cvq),
4872 ast_ctx(proto).file, ast_ctx(proto).line,
4873 cvq_to_str(proto->cvq));
4876 av = (var ->expression.flags & AST_FLAG_NORETURN);
4877 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4879 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4880 "`%s` declared with different attributes%s\n"
4881 " -> previous declaration here: %s:%i",
4882 var->name, (av ? ": noreturn" : ""),
4883 ast_ctx(proto).file, ast_ctx(proto).line,
4884 (ao ? ": noreturn" : ""));
4889 static bool create_array_accessors(parser_t *parser, ast_value *var)
4892 util_snprintf(name, sizeof(name), "%s##SET", var->name);
4893 if (!parser_create_array_setter(parser, var, name))
4895 util_snprintf(name, sizeof(name), "%s##GET", var->name);
4896 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4901 static bool parse_array(parser_t *parser, ast_value *array)
4904 if (array->initlist) {
4905 parseerror(parser, "array already initialized elsewhere");
4908 if (!parser_next(parser)) {
4909 parseerror(parser, "parse error in array initializer");
4913 while (parser->tok != '}') {
4914 ast_value *v = (ast_value*)parse_expression_leave(parser, true, false, false);
4917 if (!ast_istype(v, ast_value) || !v->hasvalue || v->cvq != CV_CONST) {
4919 parseerror(parser, "initializing element must be a compile time constant");
4922 vec_push(array->initlist, v->constval);
4923 if (v->expression.vtype == TYPE_STRING) {
4924 array->initlist[i].vstring = util_strdupe(array->initlist[i].vstring);
4928 if (parser->tok == '}')
4930 if (parser->tok != ',' || !parser_next(parser)) {
4931 parseerror(parser, "expected comma or '}' in element list");
4935 if (!parser_next(parser) || parser->tok != ';') {
4936 parseerror(parser, "expected semicolon after initializer, got %s");
4940 if (!parser_next(parser)) {
4941 parseerror(parser, "parse error after initializer");
4946 if (array->expression.flags & AST_FLAG_ARRAY_INIT) {
4947 if (array->expression.count != (size_t)-1) {
4948 parseerror(parser, "array `%s' has already been initialized with %u elements",
4949 array->name, (unsigned)array->expression.count);
4951 array->expression.count = vec_size(array->initlist);
4952 if (!create_array_accessors(parser, array))
4958 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)
4962 ast_expression *old;
4966 ast_value *basetype = NULL;
4968 bool isparam = false;
4969 bool isvector = false;
4970 bool cleanvar = true;
4971 bool wasarray = false;
4973 ast_member *me[3] = { NULL, NULL, NULL };
4975 if (!localblock && is_static)
4976 parseerror(parser, "`static` qualifier is not supported in global scope");
4978 /* get the first complete variable */
4979 var = parse_typename(parser, &basetype, cached_typedef);
4982 ast_delete(basetype);
4990 /* Part 0: finish the type */
4991 if (parser->tok == '(') {
4992 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4993 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4994 var = parse_parameter_list(parser, var);
5000 /* we only allow 1-dimensional arrays */
5001 if (parser->tok == '[') {
5003 var = parse_arraysize(parser, var);
5009 if (parser->tok == '(' && wasarray) {
5010 parseerror(parser, "arrays as part of a return type is not supported");
5011 /* we'll still parse the type completely for now */
5013 /* for functions returning functions */
5014 while (parser->tok == '(') {
5015 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5016 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5017 var = parse_parameter_list(parser, var);
5024 var->cvq = qualifier;
5025 var->expression.flags |= qflags;
5028 * store the vstring back to var for alias and
5029 * deprecation messages.
5031 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5032 var->expression.flags & AST_FLAG_ALIAS)
5033 var->desc = vstring;
5036 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5037 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5038 * is then filled with the previous definition and the parameter-names replaced.
5040 if (!strcmp(var->name, "nil")) {
5041 if (OPTS_FLAG(UNTYPED_NIL)) {
5042 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5043 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5045 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5048 /* Deal with end_sys_ vars */
5050 if (!strcmp(var->name, "end_sys_globals")) {
5052 parser->crc_globals = vec_size(parser->globals);
5055 else if (!strcmp(var->name, "end_sys_fields")) {
5057 parser->crc_fields = vec_size(parser->fields);
5060 if (was_end && var->expression.vtype == TYPE_FIELD) {
5061 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5062 "global '%s' hint should not be a field",
5063 parser_tokval(parser)))
5070 if (!nofields && var->expression.vtype == TYPE_FIELD)
5072 /* deal with field declarations */
5073 old = parser_find_field(parser, var->name);
5075 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5076 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5085 parseerror(parser, "field `%s` already declared here: %s:%i",
5086 var->name, ast_ctx(old).file, ast_ctx(old).line);
5091 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5092 (old = parser_find_global(parser, var->name)))
5094 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5095 parseerror(parser, "field `%s` already declared here: %s:%i",
5096 var->name, ast_ctx(old).file, ast_ctx(old).line);
5103 /* deal with other globals */
5104 old = parser_find_global(parser, var->name);
5105 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5107 /* This is a function which had a prototype */
5108 if (!ast_istype(old, ast_value)) {
5109 parseerror(parser, "internal error: prototype is not an ast_value");
5113 proto = (ast_value*)old;
5114 proto->desc = var->desc;
5115 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5116 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5118 ast_ctx(proto).file, ast_ctx(proto).line);
5122 /* we need the new parameter-names */
5123 for (i = 0; i < vec_size(proto->expression.params); ++i)
5124 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5125 if (!parser_check_qualifiers(parser, var, proto)) {
5132 proto->expression.flags |= var->expression.flags;
5140 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5141 "global `%s` already declared here: %s:%i",
5142 var->name, ast_ctx(old).file, ast_ctx(old).line))
5147 proto = (ast_value*)old;
5148 if (!ast_istype(old, ast_value)) {
5149 parseerror(parser, "internal error: not an ast_value");
5154 if (!parser_check_qualifiers(parser, var, proto)) {
5159 proto->expression.flags |= var->expression.flags;
5163 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5164 (old = parser_find_field(parser, var->name)))
5166 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5167 parseerror(parser, "global `%s` already declared here: %s:%i",
5168 var->name, ast_ctx(old).file, ast_ctx(old).line);
5175 else /* it's not a global */
5177 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5178 if (old && !isparam) {
5179 parseerror(parser, "local `%s` already declared here: %s:%i",
5180 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5184 old = parser_find_local(parser, var->name, 0, &isparam);
5185 if (old && isparam) {
5186 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5187 "local `%s` is shadowing a parameter", var->name))
5189 parseerror(parser, "local `%s` already declared here: %s:%i",
5190 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5194 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5196 if (ast_istype(old, ast_value))
5197 var = (ast_value*)old;
5206 /* in a noref section we simply bump the usecount */
5207 if (noref || parser->noref)
5211 * Create the global/local, and deal with vector types.
5214 if (var->expression.vtype == TYPE_VECTOR)
5216 else if (var->expression.vtype == TYPE_FIELD &&
5217 var->expression.next->vtype == TYPE_VECTOR)
5221 if (!create_vector_members(var, me)) {
5228 /* deal with global variables, fields, functions */
5229 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5230 var->isfield = true;
5231 vec_push(parser->fields, (ast_expression*)var);
5232 util_htset(parser->htfields, var->name, var);
5234 for (i = 0; i < 3; ++i) {
5235 vec_push(parser->fields, (ast_expression*)me[i]);
5236 util_htset(parser->htfields, me[i]->name, me[i]);
5241 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5242 parser_addglobal(parser, var->name, (ast_expression*)var);
5244 for (i = 0; i < 3; ++i) {
5245 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5249 ast_expression *find = parser_find_global(parser, var->desc);
5252 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5256 if (var->expression.vtype != find->vtype) {
5260 ast_type_to_string(find, ty1, sizeof(ty1));
5261 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5263 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5270 * add alias to aliases table and to corrector
5271 * so corrections can apply for aliases as well.
5273 util_htset(parser->aliases, var->name, find);
5276 * add to corrector so corrections can work
5277 * even for aliases too.
5280 vec_last(parser->correct_variables),
5281 &vec_last(parser->correct_variables_score),
5285 /* generate aliases for vector components */
5289 util_asprintf(&buffer[0], "%s_x", var->desc);
5290 util_asprintf(&buffer[1], "%s_y", var->desc);
5291 util_asprintf(&buffer[2], "%s_z", var->desc);
5293 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5294 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5295 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5302 * add to corrector so corrections can work
5303 * even for aliases too.
5306 vec_last(parser->correct_variables),
5307 &vec_last(parser->correct_variables_score),
5311 vec_last(parser->correct_variables),
5312 &vec_last(parser->correct_variables_score),
5316 vec_last(parser->correct_variables),
5317 &vec_last(parser->correct_variables_score),
5325 /* a static adds itself to be generated like any other global
5326 * but is added to the local namespace instead
5328 char *defname = NULL;
5329 size_t prefix_len, ln;
5331 ln = strlen(parser->function->name);
5332 vec_append(defname, ln, parser->function->name);
5334 vec_append(defname, 2, "::");
5335 /* remember the length up to here */
5336 prefix_len = vec_size(defname);
5338 /* Add it to the local scope */
5339 util_htset(vec_last(parser->variables), var->name, (void*)var);
5343 vec_last(parser->correct_variables),
5344 &vec_last(parser->correct_variables_score),
5348 /* now rename the global */
5349 ln = strlen(var->name);
5350 vec_append(defname, ln, var->name);
5351 ast_value_set_name(var, defname);
5353 /* push it to the to-be-generated globals */
5354 vec_push(parser->globals, (ast_expression*)var);
5356 /* same game for the vector members */
5358 for (i = 0; i < 3; ++i) {
5359 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5363 vec_last(parser->correct_variables),
5364 &vec_last(parser->correct_variables_score),
5368 vec_shrinkto(defname, prefix_len);
5369 ln = strlen(me[i]->name);
5370 vec_append(defname, ln, me[i]->name);
5371 ast_member_set_name(me[i], defname);
5373 vec_push(parser->globals, (ast_expression*)me[i]);
5378 vec_push(localblock->locals, var);
5379 parser_addlocal(parser, var->name, (ast_expression*)var);
5381 for (i = 0; i < 3; ++i) {
5382 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5383 ast_block_collect(localblock, (ast_expression*)me[i]);
5389 me[0] = me[1] = me[2] = NULL;
5394 if (var->expression.vtype == TYPE_ARRAY) {
5395 if (var->expression.count != (size_t)-1) {
5396 if (!create_array_accessors(parser, var))
5400 else if (!localblock && !nofields &&
5401 var->expression.vtype == TYPE_FIELD &&
5402 var->expression.next->vtype == TYPE_ARRAY)
5405 ast_expression *telem;
5407 ast_value *array = (ast_value*)var->expression.next;
5409 if (!ast_istype(var->expression.next, ast_value)) {
5410 parseerror(parser, "internal error: field element type must be an ast_value");
5414 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5415 if (!parser_create_array_field_setter(parser, array, name))
5418 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5419 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5420 tfield->expression.next = telem;
5421 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5422 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5430 if (parser->tok == ';') {
5431 ast_delete(basetype);
5432 if (!parser_next(parser)) {
5433 parseerror(parser, "error after variable declaration");
5439 if (parser->tok == ',')
5443 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5446 parseerror(parser, "missing comma or semicolon while parsing variables");
5450 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5451 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5452 "initializing expression turns variable `%s` into a constant in this standard",
5459 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5460 if (parser->tok != '=') {
5461 if (!strcmp(parser_tokval(parser), "break")) {
5462 if (!parser_next(parser)) {
5463 parseerror(parser, "error parsing break definition");
5466 (void)!parsewarning(parser, WARN_BREAKDEF, "break definition ignored (suggest removing it)");
5468 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5473 if (!parser_next(parser)) {
5474 parseerror(parser, "error parsing initializer");
5478 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5479 parseerror(parser, "expected '=' before function body in this standard");
5482 if (parser->tok == '#') {
5483 ast_function *func = NULL;
5484 ast_value *number = NULL;
5490 parseerror(parser, "cannot declare builtins within functions");
5493 if (var->expression.vtype != TYPE_FUNCTION) {
5494 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5497 if (!parser_next(parser)) {
5498 parseerror(parser, "expected builtin number");
5502 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5503 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5505 parseerror(parser, "builtin number expected");
5508 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5511 parseerror(parser, "builtin number must be a compile time constant");
5514 if (number->expression.vtype == TYPE_INTEGER)
5515 builtin_num = number->constval.vint;
5516 else if (number->expression.vtype == TYPE_FLOAT)
5517 builtin_num = number->constval.vfloat;
5520 parseerror(parser, "builtin number must be an integer constant");
5525 fractional = modff(builtin_num, &integral);
5526 if (builtin_num < 0 || fractional != 0) {
5527 parseerror(parser, "builtin number must be an integer greater than zero");
5531 /* we only want the integral part anyways */
5532 builtin_num = integral;
5533 } else if (parser->tok == TOKEN_INTCONST) {
5534 builtin_num = parser_token(parser)->constval.i;
5536 parseerror(parser, "builtin number must be a compile time constant");
5540 if (var->hasvalue) {
5541 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5542 "builtin `%s` has already been defined\n"
5543 " -> previous declaration here: %s:%i",
5544 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5548 func = ast_function_new(ast_ctx(var), var->name, var);
5550 parseerror(parser, "failed to allocate function for `%s`", var->name);
5553 vec_push(parser->functions, func);
5555 func->builtin = -builtin_num-1;
5558 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5559 ? (parser->tok != ',' && parser->tok != ';')
5560 : (!parser_next(parser)))
5562 parseerror(parser, "expected comma or semicolon");
5564 ast_function_delete(func);
5565 var->constval.vfunc = NULL;
5569 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
5572 /* Note that fteqcc and most others don't even *have*
5573 * local arrays, so this is not a high priority.
5575 parseerror(parser, "TODO: initializers for local arrays");
5579 var->hasvalue = true;
5580 if (!parse_array(parser, var))
5583 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
5586 parseerror(parser, "cannot declare functions within functions");
5591 ast_ctx(proto) = parser_ctx(parser);
5593 if (!parse_function_body(parser, var))
5595 ast_delete(basetype);
5596 for (i = 0; i < vec_size(parser->gotos); ++i)
5597 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5598 vec_free(parser->gotos);
5599 vec_free(parser->labels);
5602 ast_expression *cexp;
5605 cexp = parse_expression_leave(parser, true, false, false);
5610 cval = (ast_value*)cexp;
5611 if (cval != parser->nil &&
5612 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5615 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5619 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5620 qualifier != CV_VAR)
5622 var->cvq = CV_CONST;
5624 if (cval == parser->nil)
5625 var->expression.flags |= AST_FLAG_INITIALIZED;
5628 var->hasvalue = true;
5629 if (cval->expression.vtype == TYPE_STRING)
5630 var->constval.vstring = parser_strdup(cval->constval.vstring);
5631 else if (cval->expression.vtype == TYPE_FIELD)
5632 var->constval.vfield = cval;
5634 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5640 shunt sy = { NULL, NULL, NULL, NULL };
5643 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5644 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5645 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5646 if (!parser_sy_apply_operator(parser, &sy))
5649 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5650 parseerror(parser, "internal error: leaked operands");
5651 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5662 if (parser->tok == ',') {
5663 if (!parser_next(parser)) {
5664 parseerror(parser, "expected another variable");
5668 if (parser->tok != TOKEN_IDENT) {
5669 parseerror(parser, "expected another variable");
5672 var = ast_value_copy(basetype);
5674 ast_value_set_name(var, parser_tokval(parser));
5675 if (!parser_next(parser)) {
5676 parseerror(parser, "error parsing variable declaration");
5682 if (parser->tok != ';') {
5683 parseerror(parser, "missing semicolon after variables");
5687 if (!parser_next(parser)) {
5688 parseerror(parser, "parse error after variable declaration");
5692 ast_delete(basetype);
5696 if (cleanvar && var)
5698 ast_delete(basetype);
5702 ast_delete(basetype);
5703 if (cleanvar && var)
5705 if (me[0]) ast_member_delete(me[0]);
5706 if (me[1]) ast_member_delete(me[1]);
5707 if (me[2]) ast_member_delete(me[2]);
5711 static bool parser_global_statement(parser_t *parser)
5715 bool is_static = false;
5716 uint32_t qflags = 0;
5717 ast_value *istype = NULL;
5718 char *vstring = NULL;
5720 if (parser->tok == TOKEN_IDENT)
5721 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5723 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5725 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5727 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5729 if (cvq == CV_WRONG)
5731 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5733 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5735 return parse_enum(parser);
5737 else if (parser->tok == TOKEN_KEYWORD)
5739 if (!strcmp(parser_tokval(parser), "typedef")) {
5740 if (!parser_next(parser)) {
5741 parseerror(parser, "expected type definition after 'typedef'");
5744 return parse_typedef(parser);
5746 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5749 else if (parser->tok == '#')
5751 return parse_pragma(parser);
5753 else if (parser->tok == '$')
5755 if (!parser_next(parser)) {
5756 parseerror(parser, "parse error");
5762 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
5768 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5770 return util_crc16(old, str, strlen(str));
5773 static void progdefs_crc_file(const char *str)
5775 /* write to progdefs.h here */
5779 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5781 old = progdefs_crc_sum(old, str);
5782 progdefs_crc_file(str);
5786 static void generate_checksum(parser_t *parser, ir_builder *ir)
5788 uint16_t crc = 0xFFFF;
5792 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5793 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5795 progdefs_crc_file("\tint\tpad;\n");
5796 progdefs_crc_file("\tint\tofs_return[3];\n");
5797 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5798 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5799 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5800 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5801 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5802 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5803 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5804 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5806 for (i = 0; i < parser->crc_globals; ++i) {
5807 if (!ast_istype(parser->globals[i], ast_value))
5809 value = (ast_value*)(parser->globals[i]);
5810 switch (value->expression.vtype) {
5811 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5812 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5813 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5814 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5816 crc = progdefs_crc_both(crc, "\tint\t");
5819 crc = progdefs_crc_both(crc, value->name);
5820 crc = progdefs_crc_both(crc, ";\n");
5822 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5823 for (i = 0; i < parser->crc_fields; ++i) {
5824 if (!ast_istype(parser->fields[i], ast_value))
5826 value = (ast_value*)(parser->fields[i]);
5827 switch (value->expression.next->vtype) {
5828 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5829 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5830 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5831 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5833 crc = progdefs_crc_both(crc, "\tint\t");
5836 crc = progdefs_crc_both(crc, value->name);
5837 crc = progdefs_crc_both(crc, ";\n");
5839 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5840 ir->code->crc = crc;
5843 parser_t *parser_create()
5846 lex_ctx_t empty_ctx;
5849 parser = (parser_t*)mem_a(sizeof(parser_t));
5853 memset(parser, 0, sizeof(*parser));
5855 for (i = 0; i < operator_count; ++i) {
5856 if (operators[i].id == opid1('=')) {
5857 parser->assign_op = operators+i;
5861 if (!parser->assign_op) {
5862 printf("internal error: initializing parser: failed to find assign operator\n");
5867 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5868 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5869 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5870 vec_push(parser->_blocktypedefs, 0);
5872 parser->aliases = util_htnew(PARSER_HT_SIZE);
5875 vec_push(parser->correct_variables, correct_trie_new());
5876 vec_push(parser->correct_variables_score, NULL);
5878 empty_ctx.file = "<internal>";
5880 empty_ctx.column = 0;
5881 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
5882 parser->nil->cvq = CV_CONST;
5883 if (OPTS_FLAG(UNTYPED_NIL))
5884 util_htset(parser->htglobals, "nil", (void*)parser->nil);
5886 parser->max_param_count = 1;
5888 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
5889 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
5890 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
5892 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
5893 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
5894 parser->reserved_version->cvq = CV_CONST;
5895 parser->reserved_version->hasvalue = true;
5896 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
5897 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
5899 parser->reserved_version = NULL;
5902 parser->fold = fold_init (parser);
5903 parser->intrin = intrin_init(parser);
5907 static bool parser_compile(parser_t *parser)
5909 /* initial lexer/parser state */
5910 parser->lex->flags.noops = true;
5912 if (parser_next(parser))
5914 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
5916 if (!parser_global_statement(parser)) {
5917 if (parser->tok == TOKEN_EOF)
5918 parseerror(parser, "unexpected end of file");
5919 else if (compile_errors)
5920 parseerror(parser, "there have been errors, bailing out");
5921 lex_close(parser->lex);
5927 parseerror(parser, "parse error");
5928 lex_close(parser->lex);
5933 lex_close(parser->lex);
5936 return !compile_errors;
5939 bool parser_compile_file(parser_t *parser, const char *filename)
5941 parser->lex = lex_open(filename);
5943 con_err("failed to open file \"%s\"\n", filename);
5946 return parser_compile(parser);
5949 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
5951 parser->lex = lex_open_string(str, len, name);
5953 con_err("failed to create lexer for string \"%s\"\n", name);
5956 return parser_compile(parser);
5959 static void parser_remove_ast(parser_t *parser)
5962 if (parser->ast_cleaned)
5964 parser->ast_cleaned = true;
5965 for (i = 0; i < vec_size(parser->accessors); ++i) {
5966 ast_delete(parser->accessors[i]->constval.vfunc);
5967 parser->accessors[i]->constval.vfunc = NULL;
5968 ast_delete(parser->accessors[i]);
5970 for (i = 0; i < vec_size(parser->functions); ++i) {
5971 ast_delete(parser->functions[i]);
5973 for (i = 0; i < vec_size(parser->fields); ++i) {
5974 ast_delete(parser->fields[i]);
5976 for (i = 0; i < vec_size(parser->globals); ++i) {
5977 ast_delete(parser->globals[i]);
5979 vec_free(parser->accessors);
5980 vec_free(parser->functions);
5981 vec_free(parser->globals);
5982 vec_free(parser->fields);
5984 for (i = 0; i < vec_size(parser->variables); ++i)
5985 util_htdel(parser->variables[i]);
5986 vec_free(parser->variables);
5987 vec_free(parser->_blocklocals);
5988 vec_free(parser->_locals);
5991 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
5992 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
5994 vec_free(parser->correct_variables);
5995 vec_free(parser->correct_variables_score);
5997 for (i = 0; i < vec_size(parser->_typedefs); ++i)
5998 ast_delete(parser->_typedefs[i]);
5999 vec_free(parser->_typedefs);
6000 for (i = 0; i < vec_size(parser->typedefs); ++i)
6001 util_htdel(parser->typedefs[i]);
6002 vec_free(parser->typedefs);
6003 vec_free(parser->_blocktypedefs);
6005 vec_free(parser->_block_ctx);
6007 vec_free(parser->labels);
6008 vec_free(parser->gotos);
6009 vec_free(parser->breaks);
6010 vec_free(parser->continues);
6012 ast_value_delete(parser->nil);
6014 ast_value_delete(parser->const_vec[0]);
6015 ast_value_delete(parser->const_vec[1]);
6016 ast_value_delete(parser->const_vec[2]);
6018 if (parser->reserved_version)
6019 ast_value_delete(parser->reserved_version);
6021 util_htdel(parser->aliases);
6022 fold_cleanup(parser->fold);
6023 intrin_cleanup(parser->intrin);
6026 void parser_cleanup(parser_t *parser)
6028 parser_remove_ast(parser);
6032 bool parser_finish(parser_t *parser, const char *output)
6038 if (compile_errors) {
6039 con_out("*** there were compile errors\n");
6043 ir = ir_builder_new("gmqcc_out");
6045 con_out("failed to allocate builder\n");
6049 for (i = 0; i < vec_size(parser->fields); ++i) {
6052 if (!ast_istype(parser->fields[i], ast_value))
6054 field = (ast_value*)parser->fields[i];
6055 hasvalue = field->hasvalue;
6056 field->hasvalue = false;
6057 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6058 con_out("failed to generate field %s\n", field->name);
6059 ir_builder_delete(ir);
6064 ast_expression *subtype;
6065 field->hasvalue = true;
6066 subtype = field->expression.next;
6067 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6068 if (subtype->vtype == TYPE_FIELD)
6069 ifld->fieldtype = subtype->next->vtype;
6070 else if (subtype->vtype == TYPE_FUNCTION)
6071 ifld->outtype = subtype->next->vtype;
6072 (void)!ir_value_set_field(field->ir_v, ifld);
6075 for (i = 0; i < vec_size(parser->globals); ++i) {
6077 if (!ast_istype(parser->globals[i], ast_value))
6079 asvalue = (ast_value*)(parser->globals[i]);
6080 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6081 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6082 "unused global: `%s`", asvalue->name);
6084 if (!ast_global_codegen(asvalue, ir, false)) {
6085 con_out("failed to generate global %s\n", asvalue->name);
6086 ir_builder_delete(ir);
6090 /* Build function vararg accessor ast tree now before generating
6091 * immediates, because the accessors may add new immediates
6093 for (i = 0; i < vec_size(parser->functions); ++i) {
6094 ast_function *f = parser->functions[i];
6096 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6097 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6098 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6099 con_out("failed to generate vararg setter for %s\n", f->name);
6100 ir_builder_delete(ir);
6103 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6104 con_out("failed to generate vararg getter for %s\n", f->name);
6105 ir_builder_delete(ir);
6109 ast_delete(f->varargs);
6114 /* Now we can generate immediates */
6115 if (!fold_generate(parser->fold, ir))
6118 for (i = 0; i < vec_size(parser->globals); ++i) {
6120 if (!ast_istype(parser->globals[i], ast_value))
6122 asvalue = (ast_value*)(parser->globals[i]);
6123 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6125 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6126 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6127 "uninitialized constant: `%s`",
6129 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6130 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6131 "uninitialized global: `%s`",
6134 if (!ast_generate_accessors(asvalue, ir)) {
6135 ir_builder_delete(ir);
6139 for (i = 0; i < vec_size(parser->fields); ++i) {
6141 asvalue = (ast_value*)(parser->fields[i]->next);
6143 if (!ast_istype((ast_expression*)asvalue, ast_value))
6145 if (asvalue->expression.vtype != TYPE_ARRAY)
6147 if (!ast_generate_accessors(asvalue, ir)) {
6148 ir_builder_delete(ir);
6152 if (parser->reserved_version &&
6153 !ast_global_codegen(parser->reserved_version, ir, false))
6155 con_out("failed to generate reserved::version");
6156 ir_builder_delete(ir);
6159 for (i = 0; i < vec_size(parser->functions); ++i) {
6160 ast_function *f = parser->functions[i];
6161 if (!ast_function_codegen(f, ir)) {
6162 con_out("failed to generate function %s\n", f->name);
6163 ir_builder_delete(ir);
6168 generate_checksum(parser, ir);
6170 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6171 ir_builder_dump(ir, con_out);
6172 for (i = 0; i < vec_size(parser->functions); ++i) {
6173 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6174 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6175 ir_builder_delete(ir);
6179 parser_remove_ast(parser);
6181 if (compile_Werrors) {
6182 con_out("*** there were warnings treated as errors\n");
6183 compile_show_werrors();
6188 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6189 ir_builder_dump(ir, con_out);
6191 if (!ir_builder_generate(ir, output)) {
6192 con_out("*** failed to generate output file\n");
6193 ir_builder_delete(ir);
6197 ir_builder_delete(ir);