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
32 /* beginning of locals */
33 #define PARSER_HT_LOCALS 2
35 #define PARSER_HT_SIZE 128
36 #define TYPEDEF_HT_SIZE 16
42 ast_expression **globals;
43 ast_expression **fields;
44 ast_function **functions;
45 ast_value **imm_float;
46 ast_value **imm_string;
47 ast_value **imm_vector;
50 /* must be deleted first, they reference immediates and values */
51 ast_value **accessors;
53 ast_value *imm_float_zero;
54 ast_value *imm_float_one;
55 ast_value *imm_float_neg_one;
57 ast_value *imm_vector_zero;
60 ast_value *reserved_version;
65 ast_function *function;
68 /* All the labels the function defined...
69 * Should they be in ast_function instead?
74 const char **continues;
76 /* A list of hashtables for each scope */
82 /* same as above but for the spelling corrector */
83 correct_trie_t **correct_variables;
84 size_t ***correct_variables_score; /* vector of vector of size_t* */
86 /* not to be used directly, we use the hash table */
87 ast_expression **_locals;
89 ast_value **_typedefs;
90 size_t *_blocktypedefs;
93 /* we store the '=' operator info */
94 const oper_info *assign_op;
97 ast_value *const_vec[3];
102 /* collected information */
103 size_t max_param_count;
106 static ast_expression * const intrinsic_debug_typestring = (ast_expression*)0x1;
108 static void parser_enterblock(parser_t *parser);
109 static bool parser_leaveblock(parser_t *parser);
110 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
111 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
112 static bool parse_typedef(parser_t *parser);
113 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);
114 static ast_block* parse_block(parser_t *parser);
115 static bool parse_block_into(parser_t *parser, ast_block *block);
116 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
117 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
118 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
119 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
120 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname);
121 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname);
122 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
123 static ast_expression *parser_builtin_pow(parser_t *);
125 static void parseerror(parser_t *parser, const char *fmt, ...)
129 vcompile_error(parser->lex->tok.ctx, fmt, ap);
133 /* returns true if it counts as an error */
134 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
139 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
144 /**********************************************************************
145 * some maths used for constant folding
148 vector vec3_add(vector a, vector b)
157 vector vec3_sub(vector a, vector b)
166 qcfloat vec3_mulvv(vector a, vector b)
168 return (a.x * b.x + a.y * b.y + a.z * b.z);
171 vector vec3_mulvf(vector a, float b)
180 /**********************************************************************
184 bool parser_next(parser_t *parser)
186 /* lex_do kills the previous token */
187 parser->tok = lex_do(parser->lex);
188 if (parser->tok == TOKEN_EOF)
190 if (parser->tok >= TOKEN_ERROR) {
191 parseerror(parser, "lex error");
197 #define parser_tokval(p) ((p)->lex->tok.value)
198 #define parser_token(p) (&((p)->lex->tok))
199 #define parser_ctx(p) ((p)->lex->tok.ctx)
201 static ast_value* parser_const_float(parser_t *parser, double d)
206 for (i = 0; i < vec_size(parser->imm_float); ++i) {
207 const double compare = parser->imm_float[i]->constval.vfloat;
208 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
209 return parser->imm_float[i];
212 ctx = parser_ctx(parser);
214 memset(&ctx, 0, sizeof(ctx));
216 out = ast_value_new(ctx, "#IMMEDIATE", TYPE_FLOAT);
218 out->hasvalue = true;
219 out->constval.vfloat = d;
220 vec_push(parser->imm_float, out);
224 static ast_value* parser_const_float_0(parser_t *parser)
226 if (!parser->imm_float_zero)
227 parser->imm_float_zero = parser_const_float(parser, 0);
228 return parser->imm_float_zero;
231 static ast_value* parser_const_float_neg1(parser_t *parser) {
232 if (!parser->imm_float_neg_one)
233 parser->imm_float_neg_one = parser_const_float(parser, -1);
234 return parser->imm_float_neg_one;
237 static ast_value* parser_const_float_1(parser_t *parser)
239 if (!parser->imm_float_one)
240 parser->imm_float_one = parser_const_float(parser, 1);
241 return parser->imm_float_one;
244 static char *parser_strdup(const char *str)
247 /* actually dup empty strings */
248 char *out = (char*)mem_a(1);
252 return util_strdup(str);
255 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
259 for (i = 0; i < vec_size(parser->imm_string); ++i) {
260 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
261 return parser->imm_string[i];
265 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
266 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
268 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
270 out->hasvalue = true;
271 out->constval.vstring = parser_strdup(str);
272 vec_push(parser->imm_string, out);
276 static ast_value* parser_const_vector(parser_t *parser, vector v)
280 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
281 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
282 return parser->imm_vector[i];
284 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
286 out->hasvalue = true;
287 out->constval.vvec = v;
288 vec_push(parser->imm_vector, out);
292 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
298 return parser_const_vector(parser, v);
301 static ast_value* parser_const_vector_0(parser_t *parser)
303 if (!parser->imm_vector_zero)
304 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
305 return parser->imm_vector_zero;
308 static ast_expression* parser_find_field(parser_t *parser, const char *name)
310 return ( ast_expression*)util_htget(parser->htfields, name);
313 static ast_expression* parser_find_label(parser_t *parser, const char *name)
316 for(i = 0; i < vec_size(parser->labels); i++)
317 if (!strcmp(parser->labels[i]->name, name))
318 return (ast_expression*)parser->labels[i];
322 static ast_expression* parser_find_global(parser_t *parser, const char *name)
324 ast_expression *var = (ast_expression*)util_htget(parser->aliases, parser_tokval(parser));
327 return (ast_expression*)util_htget(parser->htglobals, name);
330 static ast_expression* parser_find_param(parser_t *parser, const char *name)
334 if (!parser->function)
336 fun = parser->function->vtype;
337 for (i = 0; i < vec_size(fun->expression.params); ++i) {
338 if (!strcmp(fun->expression.params[i]->name, name))
339 return (ast_expression*)(fun->expression.params[i]);
344 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
349 hash = util_hthash(parser->htglobals, name);
352 for (i = vec_size(parser->variables); i > upto;) {
354 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
358 return parser_find_param(parser, name);
361 static ast_expression* parser_find_var(parser_t *parser, const char *name)
365 v = parser_find_local(parser, name, 0, &dummy);
366 if (!v) v = parser_find_global(parser, name);
370 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
374 hash = util_hthash(parser->typedefs[0], name);
376 for (i = vec_size(parser->typedefs); i > upto;) {
378 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
386 size_t etype; /* 0 = expression, others are operators */
390 ast_block *block; /* for commas and function calls */
409 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
420 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
424 e.out = (ast_expression*)v;
431 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
433 e.etype = 1 + (op - operators);
442 static sy_elem syparen(lex_ctx ctx, size_t off) {
453 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
454 * so we need to rotate it to become ent.(foo[n]).
456 static bool rotate_entfield_array_index_nodes(ast_expression **out)
458 ast_array_index *index, *oldindex;
459 ast_entfield *entfield;
463 ast_expression *entity;
465 lex_ctx ctx = ast_ctx(*out);
467 if (!ast_istype(*out, ast_array_index))
469 index = (ast_array_index*)*out;
471 if (!ast_istype(index->array, ast_entfield))
473 entfield = (ast_entfield*)index->array;
475 if (!ast_istype(entfield->field, ast_value))
477 field = (ast_value*)entfield->field;
480 entity = entfield->entity;
484 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
485 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
486 *out = (ast_expression*)entfield;
488 oldindex->array = NULL;
489 oldindex->index = NULL;
490 ast_delete(oldindex);
495 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
497 switch (v->expression.vtype) {
499 return !!v->constval.vfloat;
501 return !!v->constval.vint;
503 if (OPTS_FLAG(CORRECT_LOGIC))
504 return v->constval.vvec.x &&
505 v->constval.vvec.y &&
508 return !!(v->constval.vvec.x);
510 if (!v->constval.vstring)
512 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
514 return !!v->constval.vstring[0];
516 compile_error(ctx, "internal error: immediate_is_true on invalid type");
517 return !!v->constval.vfunc;
521 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
525 ast_expression *out = NULL;
526 ast_expression *exprs[3];
527 ast_block *blocks[3];
528 ast_value *asvalue[3];
529 ast_binstore *asbinstore;
530 size_t i, assignop, addop, subop;
531 qcint generated_op = 0;
536 if (!vec_size(sy->ops)) {
537 parseerror(parser, "internal error: missing operator");
541 if (vec_last(sy->ops).isparen) {
542 parseerror(parser, "unmatched parenthesis");
546 op = &operators[vec_last(sy->ops).etype - 1];
547 ctx = vec_last(sy->ops).ctx;
549 if (vec_size(sy->out) < op->operands) {
550 compile_error(ctx, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
551 op->op, (int)op->id);
555 vec_shrinkby(sy->ops, 1);
557 /* op(:?) has no input and no output */
561 vec_shrinkby(sy->out, op->operands);
562 for (i = 0; i < op->operands; ++i) {
563 exprs[i] = sy->out[vec_size(sy->out)+i].out;
564 blocks[i] = sy->out[vec_size(sy->out)+i].block;
565 asvalue[i] = (ast_value*)exprs[i];
567 if (exprs[i]->expression.vtype == TYPE_NOEXPR &&
568 !(i != 0 && op->id == opid2('?',':')) &&
569 !(i == 1 && op->id == opid1('.')))
571 if (ast_istype(exprs[i], ast_label))
572 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
574 compile_error(ast_ctx(exprs[i]), "not an expression");
575 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
579 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
580 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
584 #define NotSameType(T) \
585 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
586 exprs[0]->expression.vtype != T)
587 #define CanConstFold1(A) \
588 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
589 (A)->expression.vtype != TYPE_FUNCTION)
590 #define CanConstFold(A, B) \
591 (CanConstFold1(A) && CanConstFold1(B))
592 #define ConstV(i) (asvalue[(i)]->constval.vvec)
593 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
594 #define ConstS(i) (asvalue[(i)]->constval.vstring)
598 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
602 if (exprs[0]->expression.vtype == TYPE_VECTOR &&
603 exprs[1]->expression.vtype == TYPE_NOEXPR)
605 if (exprs[1] == (ast_expression*)parser->const_vec[0])
606 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
607 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
608 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
609 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
610 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
612 compile_error(ctx, "access to invalid vector component");
616 else if (exprs[0]->expression.vtype == TYPE_ENTITY) {
617 if (exprs[1]->expression.vtype != TYPE_FIELD) {
618 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
621 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
623 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
624 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
628 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
634 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
635 !(exprs[0]->expression.vtype == TYPE_FIELD &&
636 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
638 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
639 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
642 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
643 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
644 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
647 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
648 if (rotate_entfield_array_index_nodes(&out))
651 /* This is not broken in fteqcc anymore */
652 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
653 /* this error doesn't need to make us bail out */
654 (void)!parsewarning(parser, WARN_EXTENSIONS,
655 "accessing array-field members of an entity without parenthesis\n"
656 " -> this is an extension from -std=gmqcc");
663 if (vec_size(sy->paren) && vec_last(sy->paren) == PAREN_FUNC) {
664 vec_push(sy->out, syexp(ctx, exprs[0]));
665 vec_push(sy->out, syexp(ctx, exprs[1]));
666 vec_last(sy->argc)++;
670 if (!ast_block_add_expr(blocks[0], exprs[1]))
673 blocks[0] = ast_block_new(ctx);
674 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
675 !ast_block_add_expr(blocks[0], exprs[1]))
680 ast_block_set_type(blocks[0], exprs[1]);
682 vec_push(sy->out, syblock(ctx, blocks[0]));
689 switch (exprs[0]->expression.vtype) {
691 if (CanConstFold1(exprs[0]))
692 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
694 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
695 (ast_expression*)parser_const_float_0(parser),
699 if (CanConstFold1(exprs[0]))
700 out = (ast_expression*)parser_const_vector_f(parser,
701 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
703 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
704 (ast_expression*)parser_const_vector_0(parser),
708 compile_error(ctx, "invalid types used in expression: cannot negate type %s",
709 type_name[exprs[0]->expression.vtype]);
715 switch (exprs[0]->expression.vtype) {
717 if (CanConstFold1(exprs[0]))
718 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
720 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
723 if (CanConstFold1(exprs[0]))
724 out = (ast_expression*)parser_const_float(parser,
725 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
727 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
730 if (CanConstFold1(exprs[0])) {
731 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
732 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
734 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
736 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
737 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
739 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
742 /* we don't constant-fold NOT for these types */
744 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
747 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
750 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
751 type_name[exprs[0]->expression.vtype]);
757 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
758 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
760 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
761 type_name[exprs[0]->expression.vtype],
762 type_name[exprs[1]->expression.vtype]);
765 switch (exprs[0]->expression.vtype) {
767 if (CanConstFold(exprs[0], exprs[1]))
769 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
772 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
775 if (CanConstFold(exprs[0], exprs[1]))
776 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
778 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
781 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
782 type_name[exprs[0]->expression.vtype],
783 type_name[exprs[1]->expression.vtype]);
788 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
789 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
791 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
792 type_name[exprs[1]->expression.vtype],
793 type_name[exprs[0]->expression.vtype]);
796 switch (exprs[0]->expression.vtype) {
798 if (CanConstFold(exprs[0], exprs[1]))
799 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
801 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
804 if (CanConstFold(exprs[0], exprs[1]))
805 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
807 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
810 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
811 type_name[exprs[1]->expression.vtype],
812 type_name[exprs[0]->expression.vtype]);
817 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
818 !(exprs[0]->expression.vtype == TYPE_VECTOR &&
819 exprs[1]->expression.vtype == TYPE_FLOAT) &&
820 !(exprs[1]->expression.vtype == TYPE_VECTOR &&
821 exprs[0]->expression.vtype == TYPE_FLOAT)
824 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
825 type_name[exprs[1]->expression.vtype],
826 type_name[exprs[0]->expression.vtype]);
829 switch (exprs[0]->expression.vtype) {
831 if (exprs[1]->expression.vtype == TYPE_VECTOR)
833 if (CanConstFold(exprs[0], exprs[1]))
834 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
836 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
840 if (CanConstFold(exprs[0], exprs[1]))
841 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
843 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
847 if (exprs[1]->expression.vtype == TYPE_FLOAT)
849 if (CanConstFold(exprs[0], exprs[1]))
850 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
852 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
856 if (CanConstFold(exprs[0], exprs[1]))
857 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
858 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[0])) {
859 vector vec = ConstV(0);
860 if (!vec.y && !vec.z) { /* 'n 0 0' * v */
861 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
862 out = (ast_expression*)ast_member_new(ctx, exprs[1], 0, NULL);
863 out->expression.node.keep = false;
864 ((ast_member*)out)->rvalue = true;
866 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.x), out);
868 else if (!vec.x && !vec.z) { /* '0 n 0' * v */
869 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
870 out = (ast_expression*)ast_member_new(ctx, exprs[1], 1, NULL);
871 out->expression.node.keep = false;
872 ((ast_member*)out)->rvalue = true;
874 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.y), out);
876 else if (!vec.x && !vec.y) { /* '0 n 0' * v */
877 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
878 out = (ast_expression*)ast_member_new(ctx, exprs[1], 2, NULL);
879 out->expression.node.keep = false;
880 ((ast_member*)out)->rvalue = true;
882 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.z), out);
885 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
887 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[1])) {
888 vector vec = ConstV(1);
889 if (!vec.y && !vec.z) { /* v * 'n 0 0' */
890 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
891 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
892 out->expression.node.keep = false;
893 ((ast_member*)out)->rvalue = true;
895 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.x));
897 else if (!vec.x && !vec.z) { /* v * '0 n 0' */
898 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
899 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
900 out->expression.node.keep = false;
901 ((ast_member*)out)->rvalue = true;
903 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.y));
905 else if (!vec.x && !vec.y) { /* v * '0 n 0' */
906 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
907 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
908 out->expression.node.keep = false;
909 ((ast_member*)out)->rvalue = true;
911 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.z));
914 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
917 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
921 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
922 type_name[exprs[1]->expression.vtype],
923 type_name[exprs[0]->expression.vtype]);
928 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
929 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
930 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
931 compile_error(ctx, "invalid types used in expression: cannot divide tyeps %s and %s", ty1, ty2);
934 if (exprs[0]->expression.vtype == TYPE_FLOAT) {
935 if (CanConstFold(exprs[0], exprs[1]))
936 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
938 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
940 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
941 if (CanConstFold(exprs[0], exprs[1]))
942 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), 1.0/ConstF(1)));
944 if (CanConstFold1(exprs[1])) {
945 out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
947 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
948 (ast_expression*)parser_const_float_1(parser),
952 compile_error(ctx, "internal error: failed to generate division");
955 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], out);
960 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
961 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
962 compile_error(ctx, "invalid types used in expression: cannot divide tyeps %s and %s", ty1, ty2);
968 compile_error(ctx, "qc does not have a modulo operator");
972 if (NotSameType(TYPE_FLOAT)) {
973 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
974 type_name[exprs[0]->expression.vtype],
975 type_name[exprs[1]->expression.vtype]);
978 if (CanConstFold(exprs[0], exprs[1]))
979 out = (ast_expression*)parser_const_float(parser,
980 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
981 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
983 out = (ast_expression*)ast_binary_new(ctx,
984 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
988 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor via ^");
993 if (CanConstFold(exprs[0], exprs[1]) && ! NotSameType(TYPE_FLOAT)) {
994 if (op->id == opid2('<','<'))
995 out = (ast_expression*)parser_const_float(parser, (double)((int)(ConstF(0)) << (int)(ConstF(1))));
997 out = (ast_expression*)parser_const_float(parser, (double)((int)(ConstF(0)) >> (int)(ConstF(1))));
1000 case opid3('<','<','='):
1001 case opid3('>','>','='):
1002 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
1005 case opid2('|','|'):
1006 generated_op += 1; /* INSTR_OR */
1007 case opid2('&','&'):
1008 generated_op += INSTR_AND;
1009 if (CanConstFold(exprs[0], exprs[1]))
1011 if (OPTS_FLAG(PERL_LOGIC)) {
1012 if (immediate_is_true(ctx, asvalue[0]))
1016 out = (ast_expression*)parser_const_float(parser,
1017 ( (generated_op == INSTR_OR)
1018 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
1019 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
1024 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
1025 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1026 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1027 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
1030 for (i = 0; i < 2; ++i) {
1031 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->expression.vtype == TYPE_VECTOR) {
1032 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
1034 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1036 exprs[i] = out; out = NULL;
1037 if (OPTS_FLAG(PERL_LOGIC)) {
1038 /* here we want to keep the right expressions' type */
1042 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->expression.vtype == TYPE_STRING) {
1043 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
1045 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1047 exprs[i] = out; out = NULL;
1048 if (OPTS_FLAG(PERL_LOGIC)) {
1049 /* here we want to keep the right expressions' type */
1054 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1058 case opid2('?',':'):
1059 if (vec_last(sy->paren) != PAREN_TERNARY2) {
1060 compile_error(ctx, "mismatched parenthesis/ternary");
1064 if (!ast_compare_type(exprs[1], exprs[2])) {
1065 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
1066 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
1067 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
1070 if (CanConstFold1(exprs[0]))
1071 out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
1073 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
1076 case opid2('*', '*'):
1077 if (NotSameType(TYPE_FLOAT)) {
1078 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1079 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1080 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
1086 if (CanConstFold(exprs[0], exprs[1])) {
1087 out = (ast_expression*)parser_const_float(parser, powf(ConstF(0), ConstF(1)));
1089 out = parser_builtin_pow(parser);
1093 case opid3('<','=','>'): /* -1, 0, or 1 */
1094 if (NotSameType(TYPE_FLOAT)) {
1095 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1096 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1097 compile_error(ctx, "invalid types used in comparision: %s and %s",
1103 if (CanConstFold(exprs[0], exprs[1])) {
1104 if (ConstF(0) < ConstF(1))
1105 out = (ast_expression*)parser_const_float_neg1(parser);
1106 else if (ConstF(0) == ConstF(1))
1107 out = (ast_expression*)parser_const_float_0(parser);
1108 else if (ConstF(0) > ConstF(1))
1109 out = (ast_expression*)parser_const_float_1(parser);
1111 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
1113 eq->refs = (ast_binary_ref)false; /* references nothing */
1116 out = (ast_expression*)ast_ternary_new(ctx,
1117 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
1119 (ast_expression*)parser_const_float_neg1(parser),
1122 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
1124 (ast_expression*)parser_const_float_0(parser),
1127 (ast_expression*)parser_const_float_1(parser)
1137 generated_op += 1; /* INSTR_GT */
1139 generated_op += 1; /* INSTR_LT */
1140 case opid2('>', '='):
1141 generated_op += 1; /* INSTR_GE */
1142 case opid2('<', '='):
1143 generated_op += INSTR_LE;
1144 if (NotSameType(TYPE_FLOAT)) {
1145 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1146 type_name[exprs[0]->expression.vtype],
1147 type_name[exprs[1]->expression.vtype]);
1150 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1152 case opid2('!', '='):
1153 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1154 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1155 type_name[exprs[0]->expression.vtype],
1156 type_name[exprs[1]->expression.vtype]);
1159 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1161 case opid2('=', '='):
1162 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1163 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1164 type_name[exprs[0]->expression.vtype],
1165 type_name[exprs[1]->expression.vtype]);
1168 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1172 if (ast_istype(exprs[0], ast_entfield)) {
1173 ast_expression *field = ((ast_entfield*)exprs[0])->field;
1174 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1175 exprs[0]->expression.vtype == TYPE_FIELD &&
1176 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1178 assignop = type_storep_instr[TYPE_VECTOR];
1181 assignop = type_storep_instr[exprs[0]->expression.vtype];
1182 if (assignop == VINSTR_END || !ast_compare_type(field->expression.next, exprs[1]))
1184 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
1185 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1186 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1187 field->expression.next->expression.vtype == TYPE_FUNCTION &&
1188 exprs[1]->expression.vtype == TYPE_FUNCTION)
1190 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1191 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1194 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1199 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1200 exprs[0]->expression.vtype == TYPE_FIELD &&
1201 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1203 assignop = type_store_instr[TYPE_VECTOR];
1206 assignop = type_store_instr[exprs[0]->expression.vtype];
1209 if (assignop == VINSTR_END) {
1210 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1211 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1212 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1214 else if (!ast_compare_type(exprs[0], exprs[1]))
1216 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1217 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1218 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1219 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1220 exprs[1]->expression.vtype == TYPE_FUNCTION)
1222 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1223 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1226 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1229 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1230 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1232 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1234 case opid3('+','+','P'):
1235 case opid3('-','-','P'):
1237 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1238 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1239 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
1242 if (op->id == opid3('+','+','P'))
1243 addop = INSTR_ADD_F;
1245 addop = INSTR_SUB_F;
1246 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1247 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1249 if (ast_istype(exprs[0], ast_entfield)) {
1250 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1252 (ast_expression*)parser_const_float_1(parser));
1254 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1256 (ast_expression*)parser_const_float_1(parser));
1259 case opid3('S','+','+'):
1260 case opid3('S','-','-'):
1262 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1263 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1264 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
1267 if (op->id == opid3('S','+','+')) {
1268 addop = INSTR_ADD_F;
1269 subop = INSTR_SUB_F;
1271 addop = INSTR_SUB_F;
1272 subop = INSTR_ADD_F;
1274 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1275 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1277 if (ast_istype(exprs[0], ast_entfield)) {
1278 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1280 (ast_expression*)parser_const_float_1(parser));
1282 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1284 (ast_expression*)parser_const_float_1(parser));
1288 out = (ast_expression*)ast_binary_new(ctx, subop,
1290 (ast_expression*)parser_const_float_1(parser));
1292 case opid2('+','='):
1293 case opid2('-','='):
1294 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1295 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1297 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1298 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1299 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1303 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1304 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1306 if (ast_istype(exprs[0], ast_entfield))
1307 assignop = type_storep_instr[exprs[0]->expression.vtype];
1309 assignop = type_store_instr[exprs[0]->expression.vtype];
1310 switch (exprs[0]->expression.vtype) {
1312 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1313 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1314 exprs[0], exprs[1]);
1317 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1318 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1319 exprs[0], exprs[1]);
1322 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1323 type_name[exprs[0]->expression.vtype],
1324 type_name[exprs[1]->expression.vtype]);
1328 case opid2('*','='):
1329 case opid2('/','='):
1330 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1331 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1332 exprs[0]->expression.vtype == TYPE_VECTOR))
1334 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1335 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1336 compile_error(ctx, "invalid types used in expression: %s and %s",
1340 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1341 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1343 if (ast_istype(exprs[0], ast_entfield))
1344 assignop = type_storep_instr[exprs[0]->expression.vtype];
1346 assignop = type_store_instr[exprs[0]->expression.vtype];
1347 switch (exprs[0]->expression.vtype) {
1349 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1350 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1351 exprs[0], exprs[1]);
1354 if (op->id == opid2('*','=')) {
1355 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1356 exprs[0], exprs[1]);
1358 /* there's no DIV_VF */
1359 if (CanConstFold1(exprs[1])) {
1360 out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
1362 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1363 (ast_expression*)parser_const_float_1(parser),
1367 compile_error(ctx, "internal error: failed to generate division");
1370 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1375 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1376 type_name[exprs[0]->expression.vtype],
1377 type_name[exprs[1]->expression.vtype]);
1381 case opid2('&','='):
1382 case opid2('|','='):
1383 if (NotSameType(TYPE_FLOAT)) {
1384 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1385 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1386 compile_error(ctx, "invalid types used in expression: %s and %s",
1390 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1391 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1393 if (ast_istype(exprs[0], ast_entfield))
1394 assignop = type_storep_instr[exprs[0]->expression.vtype];
1396 assignop = type_store_instr[exprs[0]->expression.vtype];
1397 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1398 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1399 exprs[0], exprs[1]);
1401 case opid3('&','~','='):
1402 /* This is like: a &= ~(b);
1403 * But QC has no bitwise-not, so we implement it as
1406 if (NotSameType(TYPE_FLOAT)) {
1407 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1408 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1409 compile_error(ctx, "invalid types used in expression: %s and %s",
1413 if (ast_istype(exprs[0], ast_entfield))
1414 assignop = type_storep_instr[exprs[0]->expression.vtype];
1416 assignop = type_store_instr[exprs[0]->expression.vtype];
1417 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1420 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1421 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1423 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1424 asbinstore->keep_dest = true;
1425 out = (ast_expression*)asbinstore;
1428 case opid2('~', 'P'):
1429 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1430 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1431 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1435 if(CanConstFold1(exprs[0]))
1436 out = (ast_expression*)parser_const_float(parser, ~(qcint)ConstF(0));
1438 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, (ast_expression*)parser_const_float_neg1(parser), exprs[0]);
1444 compile_error(ctx, "failed to apply operator %s", op->op);
1448 vec_push(sy->out, syexp(ctx, out));
1452 static bool parser_close_call(parser_t *parser, shunt *sy)
1454 /* was a function call */
1455 ast_expression *fun;
1456 ast_value *funval = NULL;
1460 size_t paramcount, i;
1462 fid = vec_last(sy->ops).off;
1463 vec_shrinkby(sy->ops, 1);
1465 /* out[fid] is the function
1466 * everything above is parameters...
1468 if (!vec_size(sy->argc)) {
1469 parseerror(parser, "internal error: no argument counter available");
1473 paramcount = vec_last(sy->argc);
1476 if (vec_size(sy->out) < fid) {
1477 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1478 (unsigned long)vec_size(sy->out),
1480 (unsigned long)paramcount);
1484 fun = sy->out[fid].out;
1486 if (fun == intrinsic_debug_typestring) {
1488 if (fid+2 != vec_size(sy->out) ||
1489 vec_last(sy->out).block)
1491 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1494 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1495 ast_unref(vec_last(sy->out).out);
1496 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1497 (ast_expression*)parser_const_string(parser, ty, false));
1498 vec_shrinkby(sy->out, 1);
1502 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1506 if (fid+1 < vec_size(sy->out))
1509 if (fid+1 + paramcount != vec_size(sy->out)) {
1510 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1511 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1515 for (i = 0; i < paramcount; ++i)
1516 vec_push(call->params, sy->out[fid+1 + i].out);
1517 vec_shrinkby(sy->out, paramcount);
1518 (void)!ast_call_check_types(call);
1519 if (parser->max_param_count < paramcount)
1520 parser->max_param_count = paramcount;
1522 if (ast_istype(fun, ast_value)) {
1523 funval = (ast_value*)fun;
1524 if ((fun->expression.flags & AST_FLAG_VARIADIC) &&
1525 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1527 call->va_count = (ast_expression*)parser_const_float(parser, (double)paramcount);
1531 /* overwrite fid, the function, with a call */
1532 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1534 if (fun->expression.vtype != TYPE_FUNCTION) {
1535 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1539 if (!fun->expression.next) {
1540 parseerror(parser, "could not determine function return type");
1543 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1545 if (fun->expression.flags & AST_FLAG_DEPRECATED) {
1547 return !parsewarning(parser, WARN_DEPRECATED,
1548 "call to function (which is marked deprecated)\n",
1549 "-> it has been declared here: %s:%i",
1550 ast_ctx(fun).file, ast_ctx(fun).line);
1553 return !parsewarning(parser, WARN_DEPRECATED,
1554 "call to `%s` (which is marked deprecated)\n"
1555 "-> `%s` declared here: %s:%i",
1556 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1558 return !parsewarning(parser, WARN_DEPRECATED,
1559 "call to `%s` (deprecated: %s)\n"
1560 "-> `%s` declared here: %s:%i",
1561 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1565 if (vec_size(fun->expression.params) != paramcount &&
1566 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1567 vec_size(fun->expression.params) < paramcount))
1569 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1571 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1572 "too %s parameters for call to %s: expected %i, got %i\n"
1573 " -> `%s` has been declared here: %s:%i",
1574 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1575 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1577 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1578 "too %s parameters for function call: expected %i, got %i\n"
1579 " -> it has been declared here: %s:%i",
1580 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1581 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1588 static bool parser_close_paren(parser_t *parser, shunt *sy)
1590 if (!vec_size(sy->ops)) {
1591 parseerror(parser, "unmatched closing paren");
1595 while (vec_size(sy->ops)) {
1596 if (vec_last(sy->ops).isparen) {
1597 if (vec_last(sy->paren) == PAREN_FUNC) {
1599 if (!parser_close_call(parser, sy))
1603 if (vec_last(sy->paren) == PAREN_EXPR) {
1605 if (!vec_size(sy->out)) {
1606 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1607 vec_shrinkby(sy->ops, 1);
1610 vec_shrinkby(sy->ops, 1);
1613 if (vec_last(sy->paren) == PAREN_INDEX) {
1615 /* pop off the parenthesis */
1616 vec_shrinkby(sy->ops, 1);
1617 /* then apply the index operator */
1618 if (!parser_sy_apply_operator(parser, sy))
1622 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1623 vec_last(sy->paren) = PAREN_TERNARY2;
1624 /* pop off the parenthesis */
1625 vec_shrinkby(sy->ops, 1);
1628 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1631 if (!parser_sy_apply_operator(parser, sy))
1637 static void parser_reclassify_token(parser_t *parser)
1640 for (i = 0; i < operator_count; ++i) {
1641 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1642 parser->tok = TOKEN_OPERATOR;
1648 static ast_expression* parse_vararg_do(parser_t *parser)
1650 ast_expression *idx, *out;
1652 ast_value *funtype = parser->function->vtype;
1654 lex_ctx ctx = parser_ctx(parser);
1656 if (!parser_next(parser) || parser->tok != '(') {
1657 parseerror(parser, "expected parameter index and type in parenthesis");
1660 if (!parser_next(parser)) {
1661 parseerror(parser, "error parsing parameter index");
1665 idx = parse_expression_leave(parser, true, false, false);
1669 if (parser->tok != ',') {
1671 parseerror(parser, "expected comma after parameter index");
1675 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1677 parseerror(parser, "expected typename for vararg");
1681 typevar = parse_typename(parser, NULL, NULL);
1687 if (parser->tok != ')') {
1689 ast_delete(typevar);
1690 parseerror(parser, "expected closing paren");
1695 if (!parser_next(parser)) {
1697 ast_delete(typevar);
1698 parseerror(parser, "parse error after vararg");
1703 if (!parser->function->varargs) {
1705 ast_delete(typevar);
1706 parseerror(parser, "function has no variable argument list");
1710 if (funtype->expression.varparam &&
1711 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1715 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1716 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1717 compile_error(ast_ctx(typevar),
1718 "function was declared to take varargs of type `%s`, requested type is: %s",
1722 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1723 ast_type_adopt(out, typevar);
1724 ast_delete(typevar);
1728 static ast_expression* parse_vararg(parser_t *parser)
1730 bool old_noops = parser->lex->flags.noops;
1732 ast_expression *out;
1734 parser->lex->flags.noops = true;
1735 out = parse_vararg_do(parser);
1737 parser->lex->flags.noops = old_noops;
1741 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1743 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1744 parser->tok == TOKEN_IDENT &&
1745 !strcmp(parser_tokval(parser), "_"))
1747 /* a translatable string */
1750 parser->lex->flags.noops = true;
1751 if (!parser_next(parser) || parser->tok != '(') {
1752 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1755 parser->lex->flags.noops = false;
1756 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1757 parseerror(parser, "expected a constant string in translatable-string extension");
1760 val = parser_const_string(parser, parser_tokval(parser), true);
1763 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1765 if (!parser_next(parser) || parser->tok != ')') {
1766 parseerror(parser, "expected closing paren after translatable string");
1771 else if (parser->tok == TOKEN_DOTS)
1774 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1775 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1778 va = parse_vararg(parser);
1781 vec_push(sy->out, syexp(parser_ctx(parser), va));
1784 else if (parser->tok == TOKEN_FLOATCONST) {
1786 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1789 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1792 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1794 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1797 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1800 else if (parser->tok == TOKEN_STRINGCONST) {
1802 val = parser_const_string(parser, parser_tokval(parser), false);
1805 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1808 else if (parser->tok == TOKEN_VECTORCONST) {
1810 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1813 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1816 else if (parser->tok == TOKEN_IDENT)
1818 const char *ctoken = parser_tokval(parser);
1819 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1820 ast_expression *var;
1821 /* a_vector.{x,y,z} */
1822 if (!vec_size(sy->ops) ||
1823 !vec_last(sy->ops).etype ||
1824 operators[vec_last(sy->ops).etype-1].id != opid1('.') ||
1825 (prev >= intrinsic_debug_typestring &&
1826 prev <= intrinsic_debug_typestring))
1828 /* When adding more intrinsics, fix the above condition */
1831 if (prev && prev->expression.vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1833 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1835 var = parser_find_var(parser, parser_tokval(parser));
1837 var = parser_find_field(parser, parser_tokval(parser));
1839 if (!var && with_labels) {
1840 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1842 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1843 var = (ast_expression*)lbl;
1844 vec_push(parser->labels, lbl);
1849 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1850 var = (ast_expression*)intrinsic_debug_typestring;
1852 if (!strcmp(parser_tokval(parser), "__builtin_pow"))
1853 var = parser_builtin_pow(parser);
1856 char *correct = NULL;
1860 * sometimes people use preprocessing predefs without enabling them
1861 * i've done this thousands of times already myself. Lets check for
1862 * it in the predef table. And diagnose it better :)
1864 if (!OPTS_FLAG(FTEPP_PREDEFS)) {
1865 for (i = 0; i < sizeof(ftepp_predefs)/sizeof(*ftepp_predefs); i++) {
1866 if (!strcmp(ftepp_predefs[i].name, parser_tokval(parser))) {
1867 parseerror(parser, "unexpected ident: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1874 * TODO: determine the best score for the identifier: be it
1875 * a variable, a field.
1877 * We should also consider adding correction tables for
1878 * other things as well.
1880 if (OPTS_OPTION_BOOL(OPTION_CORRECTION)) {
1882 correct_init(&corr);
1884 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1885 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1886 if (strcmp(correct, parser_tokval(parser))) {
1888 } else if (correct) {
1893 correct_free(&corr);
1896 parseerror(parser, "unexpected ident: %s (did you mean %s?)", parser_tokval(parser), correct);
1901 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1907 if (ast_istype(var, ast_value)) {
1908 ((ast_value*)var)->uses++;
1910 else if (ast_istype(var, ast_member)) {
1911 ast_member *mem = (ast_member*)var;
1912 if (ast_istype(mem->owner, ast_value))
1913 ((ast_value*)(mem->owner))->uses++;
1916 vec_push(sy->out, syexp(parser_ctx(parser), var));
1919 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1923 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1925 ast_expression *expr = NULL;
1928 bool wantop = false;
1929 /* only warn once about an assignment in a truth value because the current code
1930 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1932 bool warn_truthvalue = true;
1934 /* count the parens because an if starts with one, so the
1935 * end of a condition is an unmatched closing paren
1939 memset(&sy, 0, sizeof(sy));
1941 parser->lex->flags.noops = false;
1943 parser_reclassify_token(parser);
1947 if (parser->tok == TOKEN_TYPENAME) {
1948 parseerror(parser, "unexpected typename");
1952 if (parser->tok == TOKEN_OPERATOR)
1954 /* classify the operator */
1955 const oper_info *op;
1956 const oper_info *olast = NULL;
1958 for (o = 0; o < operator_count; ++o) {
1959 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1960 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1961 !strcmp(parser_tokval(parser), operators[o].op))
1966 if (o == operator_count) {
1967 compile_error(parser_ctx(parser), "unknown operator: %s", parser_tokval(parser));
1970 /* found an operator */
1973 /* when declaring variables, a comma starts a new variable */
1974 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
1975 /* fixup the token */
1980 /* a colon without a pervious question mark cannot be a ternary */
1981 if (!ternaries && op->id == opid2(':','?')) {
1986 if (op->id == opid1(',')) {
1987 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1988 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1992 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1993 olast = &operators[vec_last(sy.ops).etype-1];
1995 #define IsAssignOp(x) (\
1996 (x) == opid1('=') || \
1997 (x) == opid2('+','=') || \
1998 (x) == opid2('-','=') || \
1999 (x) == opid2('*','=') || \
2000 (x) == opid2('/','=') || \
2001 (x) == opid2('%','=') || \
2002 (x) == opid2('&','=') || \
2003 (x) == opid2('|','=') || \
2004 (x) == opid3('&','~','=') \
2006 if (warn_truthvalue) {
2007 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
2008 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
2009 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
2012 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
2013 warn_truthvalue = false;
2018 (op->prec < olast->prec) ||
2019 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
2021 if (!parser_sy_apply_operator(parser, &sy))
2023 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2024 olast = &operators[vec_last(sy.ops).etype-1];
2029 if (op->id == opid1('(')) {
2031 size_t sycount = vec_size(sy.out);
2032 /* we expected an operator, this is the function-call operator */
2033 vec_push(sy.paren, PAREN_FUNC);
2034 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
2035 vec_push(sy.argc, 0);
2037 vec_push(sy.paren, PAREN_EXPR);
2038 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2041 } else if (op->id == opid1('[')) {
2043 parseerror(parser, "unexpected array subscript");
2046 vec_push(sy.paren, PAREN_INDEX);
2047 /* push both the operator and the paren, this makes life easier */
2048 vec_push(sy.ops, syop(parser_ctx(parser), op));
2049 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2051 } else if (op->id == opid2('?',':')) {
2052 vec_push(sy.ops, syop(parser_ctx(parser), op));
2053 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2056 vec_push(sy.paren, PAREN_TERNARY1);
2057 } else if (op->id == opid2(':','?')) {
2058 if (!vec_size(sy.paren)) {
2059 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2062 if (vec_last(sy.paren) != PAREN_TERNARY1) {
2063 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2066 if (!parser_close_paren(parser, &sy))
2068 vec_push(sy.ops, syop(parser_ctx(parser), op));
2072 vec_push(sy.ops, syop(parser_ctx(parser), op));
2073 wantop = !!(op->flags & OP_SUFFIX);
2076 else if (parser->tok == ')') {
2077 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2078 if (!parser_sy_apply_operator(parser, &sy))
2081 if (!vec_size(sy.paren))
2084 if (vec_last(sy.paren) == PAREN_TERNARY1) {
2085 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
2088 if (!parser_close_paren(parser, &sy))
2091 /* must be a function call without parameters */
2092 if (vec_last(sy.paren) != PAREN_FUNC) {
2093 parseerror(parser, "closing paren in invalid position");
2096 if (!parser_close_paren(parser, &sy))
2101 else if (parser->tok == '(') {
2102 parseerror(parser, "internal error: '(' should be classified as operator");
2105 else if (parser->tok == '[') {
2106 parseerror(parser, "internal error: '[' should be classified as operator");
2109 else if (parser->tok == ']') {
2110 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2111 if (!parser_sy_apply_operator(parser, &sy))
2114 if (!vec_size(sy.paren))
2116 if (vec_last(sy.paren) != PAREN_INDEX) {
2117 parseerror(parser, "mismatched parentheses, unexpected ']'");
2120 if (!parser_close_paren(parser, &sy))
2125 if (!parse_sya_operand(parser, &sy, with_labels))
2128 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
2129 vec_last(sy.argc)++;
2134 parseerror(parser, "expected operator or end of statement");
2138 if (!parser_next(parser)) {
2141 if (parser->tok == ';' ||
2142 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
2143 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
2149 while (vec_size(sy.ops)) {
2150 if (!parser_sy_apply_operator(parser, &sy))
2154 parser->lex->flags.noops = true;
2155 if (!vec_size(sy.out)) {
2156 parseerror(parser, "empty expression");
2159 expr = sy.out[0].out;
2162 if (vec_size(sy.paren)) {
2163 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
2171 parser->lex->flags.noops = true;
2172 for (i = 0; i < vec_size(sy.out); ++i) {
2174 ast_unref(sy.out[i].out);
2183 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
2185 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
2188 if (parser->tok != ';') {
2189 parseerror(parser, "semicolon expected after expression");
2193 if (!parser_next(parser)) {
2200 static void parser_enterblock(parser_t *parser)
2202 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2203 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2204 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2205 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2206 vec_push(parser->_block_ctx, parser_ctx(parser));
2209 vec_push(parser->correct_variables, correct_trie_new());
2210 vec_push(parser->correct_variables_score, NULL);
2213 static bool parser_leaveblock(parser_t *parser)
2216 size_t locals, typedefs;
2218 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2219 parseerror(parser, "internal error: parser_leaveblock with no block");
2223 util_htdel(vec_last(parser->variables));
2224 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2226 vec_pop(parser->variables);
2227 vec_pop(parser->correct_variables);
2228 vec_pop(parser->correct_variables_score);
2229 if (!vec_size(parser->_blocklocals)) {
2230 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2234 locals = vec_last(parser->_blocklocals);
2235 vec_pop(parser->_blocklocals);
2236 while (vec_size(parser->_locals) != locals) {
2237 ast_expression *e = vec_last(parser->_locals);
2238 ast_value *v = (ast_value*)e;
2239 vec_pop(parser->_locals);
2240 if (ast_istype(e, ast_value) && !v->uses) {
2241 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2246 typedefs = vec_last(parser->_blocktypedefs);
2247 while (vec_size(parser->_typedefs) != typedefs) {
2248 ast_delete(vec_last(parser->_typedefs));
2249 vec_pop(parser->_typedefs);
2251 util_htdel(vec_last(parser->typedefs));
2252 vec_pop(parser->typedefs);
2254 vec_pop(parser->_block_ctx);
2259 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2261 vec_push(parser->_locals, e);
2262 util_htset(vec_last(parser->variables), name, (void*)e);
2266 vec_last(parser->correct_variables),
2267 &vec_last(parser->correct_variables_score),
2272 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2274 vec_push(parser->globals, e);
2275 util_htset(parser->htglobals, name, e);
2279 parser->correct_variables[0],
2280 &parser->correct_variables_score[0],
2285 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2289 ast_expression *prev;
2291 if (cond->expression.vtype == TYPE_VOID || cond->expression.vtype >= TYPE_VARIANT) {
2293 ast_type_to_string(cond, ty, sizeof(ty));
2294 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2297 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
2300 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2303 parseerror(parser, "internal error: failed to process condition");
2308 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
2310 /* vector types need to be cast to true booleans */
2311 ast_binary *bin = (ast_binary*)cond;
2312 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2314 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2316 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2319 parseerror(parser, "internal error: failed to process condition");
2326 unary = (ast_unary*)cond;
2327 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2329 cond = unary->operand;
2330 unary->operand = NULL;
2333 unary = (ast_unary*)cond;
2337 parseerror(parser, "internal error: failed to process condition");
2339 if (ifnot) *_ifnot = !*_ifnot;
2343 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2346 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2349 lex_ctx ctx = parser_ctx(parser);
2351 (void)block; /* not touching */
2353 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2354 if (!parser_next(parser)) {
2355 parseerror(parser, "expected condition or 'not'");
2358 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2360 if (!parser_next(parser)) {
2361 parseerror(parser, "expected condition in parenthesis");
2365 if (parser->tok != '(') {
2366 parseerror(parser, "expected 'if' condition in parenthesis");
2369 /* parse into the expression */
2370 if (!parser_next(parser)) {
2371 parseerror(parser, "expected 'if' condition after opening paren");
2374 /* parse the condition */
2375 cond = parse_expression_leave(parser, false, true, false);
2379 if (parser->tok != ')') {
2380 parseerror(parser, "expected closing paren after 'if' condition");
2384 /* parse into the 'then' branch */
2385 if (!parser_next(parser)) {
2386 parseerror(parser, "expected statement for on-true branch of 'if'");
2390 if (!parse_statement_or_block(parser, &ontrue)) {
2395 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2396 /* check for an else */
2397 if (!strcmp(parser_tokval(parser), "else")) {
2398 /* parse into the 'else' branch */
2399 if (!parser_next(parser)) {
2400 parseerror(parser, "expected on-false branch after 'else'");
2405 if (!parse_statement_or_block(parser, &onfalse)) {
2412 cond = process_condition(parser, cond, &ifnot);
2414 if (ontrue) ast_delete(ontrue);
2415 if (onfalse) ast_delete(onfalse);
2420 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2422 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2423 *out = (ast_expression*)ifthen;
2427 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2428 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2433 /* skip the 'while' and get the body */
2434 if (!parser_next(parser)) {
2435 if (OPTS_FLAG(LOOP_LABELS))
2436 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2438 parseerror(parser, "expected 'while' condition in parenthesis");
2442 if (parser->tok == ':') {
2443 if (!OPTS_FLAG(LOOP_LABELS))
2444 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2445 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2446 parseerror(parser, "expected loop label");
2449 label = util_strdup(parser_tokval(parser));
2450 if (!parser_next(parser)) {
2452 parseerror(parser, "expected 'while' condition in parenthesis");
2457 if (parser->tok != '(') {
2458 parseerror(parser, "expected 'while' condition in parenthesis");
2462 vec_push(parser->breaks, label);
2463 vec_push(parser->continues, label);
2465 rv = parse_while_go(parser, block, out);
2468 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2469 parseerror(parser, "internal error: label stack corrupted");
2475 vec_pop(parser->breaks);
2476 vec_pop(parser->continues);
2481 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2484 ast_expression *cond, *ontrue;
2488 lex_ctx ctx = parser_ctx(parser);
2490 (void)block; /* not touching */
2492 /* parse into the expression */
2493 if (!parser_next(parser)) {
2494 parseerror(parser, "expected 'while' condition after opening paren");
2497 /* parse the condition */
2498 cond = parse_expression_leave(parser, false, true, false);
2502 if (parser->tok != ')') {
2503 parseerror(parser, "expected closing paren after 'while' condition");
2507 /* parse into the 'then' branch */
2508 if (!parser_next(parser)) {
2509 parseerror(parser, "expected while-loop body");
2513 if (!parse_statement_or_block(parser, &ontrue)) {
2518 cond = process_condition(parser, cond, &ifnot);
2523 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2524 *out = (ast_expression*)aloop;
2528 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2529 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2534 /* skip the 'do' and get the body */
2535 if (!parser_next(parser)) {
2536 if (OPTS_FLAG(LOOP_LABELS))
2537 parseerror(parser, "expected loop label or body");
2539 parseerror(parser, "expected loop body");
2543 if (parser->tok == ':') {
2544 if (!OPTS_FLAG(LOOP_LABELS))
2545 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2546 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2547 parseerror(parser, "expected loop label");
2550 label = util_strdup(parser_tokval(parser));
2551 if (!parser_next(parser)) {
2553 parseerror(parser, "expected loop body");
2558 vec_push(parser->breaks, label);
2559 vec_push(parser->continues, label);
2561 rv = parse_dowhile_go(parser, block, out);
2564 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2565 parseerror(parser, "internal error: label stack corrupted");
2571 vec_pop(parser->breaks);
2572 vec_pop(parser->continues);
2577 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2580 ast_expression *cond, *ontrue;
2584 lex_ctx ctx = parser_ctx(parser);
2586 (void)block; /* not touching */
2588 if (!parse_statement_or_block(parser, &ontrue))
2591 /* expect the "while" */
2592 if (parser->tok != TOKEN_KEYWORD ||
2593 strcmp(parser_tokval(parser), "while"))
2595 parseerror(parser, "expected 'while' and condition");
2600 /* skip the 'while' and check for opening paren */
2601 if (!parser_next(parser) || parser->tok != '(') {
2602 parseerror(parser, "expected 'while' condition in parenthesis");
2606 /* parse into the expression */
2607 if (!parser_next(parser)) {
2608 parseerror(parser, "expected 'while' condition after opening paren");
2612 /* parse the condition */
2613 cond = parse_expression_leave(parser, false, true, false);
2617 if (parser->tok != ')') {
2618 parseerror(parser, "expected closing paren after 'while' condition");
2624 if (!parser_next(parser) || parser->tok != ';') {
2625 parseerror(parser, "expected semicolon after condition");
2631 if (!parser_next(parser)) {
2632 parseerror(parser, "parse error");
2638 cond = process_condition(parser, cond, &ifnot);
2643 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2644 *out = (ast_expression*)aloop;
2648 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2649 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2654 /* skip the 'for' and check for opening paren */
2655 if (!parser_next(parser)) {
2656 if (OPTS_FLAG(LOOP_LABELS))
2657 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2659 parseerror(parser, "expected 'for' expressions in parenthesis");
2663 if (parser->tok == ':') {
2664 if (!OPTS_FLAG(LOOP_LABELS))
2665 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2666 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2667 parseerror(parser, "expected loop label");
2670 label = util_strdup(parser_tokval(parser));
2671 if (!parser_next(parser)) {
2673 parseerror(parser, "expected 'for' expressions in parenthesis");
2678 if (parser->tok != '(') {
2679 parseerror(parser, "expected 'for' expressions in parenthesis");
2683 vec_push(parser->breaks, label);
2684 vec_push(parser->continues, label);
2686 rv = parse_for_go(parser, block, out);
2689 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2690 parseerror(parser, "internal error: label stack corrupted");
2696 vec_pop(parser->breaks);
2697 vec_pop(parser->continues);
2701 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2704 ast_expression *initexpr, *cond, *increment, *ontrue;
2710 lex_ctx ctx = parser_ctx(parser);
2712 parser_enterblock(parser);
2719 /* parse into the expression */
2720 if (!parser_next(parser)) {
2721 parseerror(parser, "expected 'for' initializer after opening paren");
2726 if (parser->tok == TOKEN_IDENT)
2727 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2729 if (typevar || parser->tok == TOKEN_TYPENAME) {
2731 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2732 if (parsewarning(parser, WARN_EXTENSIONS,
2733 "current standard does not allow variable declarations in for-loop initializers"))
2737 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2740 else if (parser->tok != ';')
2742 initexpr = parse_expression_leave(parser, false, false, false);
2747 /* move on to condition */
2748 if (parser->tok != ';') {
2749 parseerror(parser, "expected semicolon after for-loop initializer");
2752 if (!parser_next(parser)) {
2753 parseerror(parser, "expected for-loop condition");
2757 /* parse the condition */
2758 if (parser->tok != ';') {
2759 cond = parse_expression_leave(parser, false, true, false);
2764 /* move on to incrementor */
2765 if (parser->tok != ';') {
2766 parseerror(parser, "expected semicolon after for-loop initializer");
2769 if (!parser_next(parser)) {
2770 parseerror(parser, "expected for-loop condition");
2774 /* parse the incrementor */
2775 if (parser->tok != ')') {
2776 lex_ctx condctx = parser_ctx(parser);
2777 increment = parse_expression_leave(parser, false, false, false);
2780 if (!ast_side_effects(increment)) {
2781 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2787 if (parser->tok != ')') {
2788 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2791 /* parse into the 'then' branch */
2792 if (!parser_next(parser)) {
2793 parseerror(parser, "expected for-loop body");
2796 if (!parse_statement_or_block(parser, &ontrue))
2800 cond = process_condition(parser, cond, &ifnot);
2804 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2805 *out = (ast_expression*)aloop;
2807 if (!parser_leaveblock(parser))
2811 if (initexpr) ast_delete(initexpr);
2812 if (cond) ast_delete(cond);
2813 if (increment) ast_delete(increment);
2814 (void)!parser_leaveblock(parser);
2818 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2820 ast_expression *exp = NULL;
2821 ast_return *ret = NULL;
2822 ast_value *expected = parser->function->vtype;
2824 lex_ctx ctx = parser_ctx(parser);
2826 (void)block; /* not touching */
2828 if (!parser_next(parser)) {
2829 parseerror(parser, "expected return expression");
2833 if (parser->tok != ';') {
2834 exp = parse_expression(parser, false, false);
2838 if (exp->expression.vtype != TYPE_NIL &&
2839 exp->expression.vtype != expected->expression.next->expression.vtype)
2841 parseerror(parser, "return with invalid expression");
2844 ret = ast_return_new(ctx, exp);
2850 if (!parser_next(parser))
2851 parseerror(parser, "parse error");
2852 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2853 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2855 ret = ast_return_new(ctx, NULL);
2857 *out = (ast_expression*)ret;
2861 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2864 unsigned int levels = 0;
2865 lex_ctx ctx = parser_ctx(parser);
2866 const char **loops = (is_continue ? parser->continues : parser->breaks);
2868 (void)block; /* not touching */
2869 if (!parser_next(parser)) {
2870 parseerror(parser, "expected semicolon or loop label");
2874 if (!vec_size(loops)) {
2876 parseerror(parser, "`continue` can only be used inside loops");
2878 parseerror(parser, "`break` can only be used inside loops or switches");
2881 if (parser->tok == TOKEN_IDENT) {
2882 if (!OPTS_FLAG(LOOP_LABELS))
2883 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2884 i = vec_size(loops);
2886 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2889 parseerror(parser, "no such loop to %s: `%s`",
2890 (is_continue ? "continue" : "break out of"),
2891 parser_tokval(parser));
2896 if (!parser_next(parser)) {
2897 parseerror(parser, "expected semicolon");
2902 if (parser->tok != ';') {
2903 parseerror(parser, "expected semicolon");
2907 if (!parser_next(parser))
2908 parseerror(parser, "parse error");
2910 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2914 /* returns true when it was a variable qualifier, false otherwise!
2915 * on error, cvq is set to CV_WRONG
2917 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2919 bool had_const = false;
2920 bool had_var = false;
2921 bool had_noref = false;
2922 bool had_attrib = false;
2923 bool had_static = false;
2928 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2930 /* parse an attribute */
2931 if (!parser_next(parser)) {
2932 parseerror(parser, "expected attribute after `[[`");
2936 if (!strcmp(parser_tokval(parser), "noreturn")) {
2937 flags |= AST_FLAG_NORETURN;
2938 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2939 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2944 else if (!strcmp(parser_tokval(parser), "noref")) {
2946 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2947 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2952 else if (!strcmp(parser_tokval(parser), "inline")) {
2953 flags |= AST_FLAG_INLINE;
2954 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2955 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2960 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
2961 flags |= AST_FLAG_ALIAS;
2964 if (!parser_next(parser)) {
2965 parseerror(parser, "parse error in attribute");
2969 if (parser->tok == '(') {
2970 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2971 parseerror(parser, "`alias` attribute missing parameter");
2975 *message = util_strdup(parser_tokval(parser));
2977 if (!parser_next(parser)) {
2978 parseerror(parser, "parse error in attribute");
2982 if (parser->tok != ')') {
2983 parseerror(parser, "`alias` attribute expected `)` after parameter");
2987 if (!parser_next(parser)) {
2988 parseerror(parser, "parse error in attribute");
2993 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2994 parseerror(parser, "`alias` attribute expected `]]`");
2998 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2999 flags |= AST_FLAG_DEPRECATED;
3002 if (!parser_next(parser)) {
3003 parseerror(parser, "parse error in attribute");
3007 if (parser->tok == '(') {
3008 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
3009 parseerror(parser, "`deprecated` attribute missing parameter");
3013 *message = util_strdup(parser_tokval(parser));
3015 if (!parser_next(parser)) {
3016 parseerror(parser, "parse error in attribute");
3020 if(parser->tok != ')') {
3021 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
3025 if (!parser_next(parser)) {
3026 parseerror(parser, "parse error in attribute");
3031 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3032 parseerror(parser, "`deprecated` attribute expected `]]`");
3035 if (*message) mem_d(*message);
3043 /* Skip tokens until we hit a ]] */
3044 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
3045 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3046 if (!parser_next(parser)) {
3047 parseerror(parser, "error inside attribute");
3054 else if (with_local && !strcmp(parser_tokval(parser), "static"))
3056 else if (!strcmp(parser_tokval(parser), "const"))
3058 else if (!strcmp(parser_tokval(parser), "var"))
3060 else if (with_local && !strcmp(parser_tokval(parser), "local"))
3062 else if (!strcmp(parser_tokval(parser), "noref"))
3064 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
3069 if (!parser_next(parser))
3079 *is_static = had_static;
3083 parseerror(parser, "parse error after variable qualifier");
3088 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
3089 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
3094 /* skip the 'while' and get the body */
3095 if (!parser_next(parser)) {
3096 if (OPTS_FLAG(LOOP_LABELS))
3097 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
3099 parseerror(parser, "expected 'switch' operand in parenthesis");
3103 if (parser->tok == ':') {
3104 if (!OPTS_FLAG(LOOP_LABELS))
3105 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3106 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3107 parseerror(parser, "expected loop label");
3110 label = util_strdup(parser_tokval(parser));
3111 if (!parser_next(parser)) {
3113 parseerror(parser, "expected 'switch' operand in parenthesis");
3118 if (parser->tok != '(') {
3119 parseerror(parser, "expected 'switch' operand in parenthesis");
3123 vec_push(parser->breaks, label);
3125 rv = parse_switch_go(parser, block, out);
3128 if (vec_last(parser->breaks) != label) {
3129 parseerror(parser, "internal error: label stack corrupted");
3135 vec_pop(parser->breaks);
3140 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3142 ast_expression *operand;
3145 ast_switch *switchnode;
3146 ast_switch_case swcase;
3149 bool noref, is_static;
3150 uint32_t qflags = 0;
3152 lex_ctx ctx = parser_ctx(parser);
3154 (void)block; /* not touching */
3157 /* parse into the expression */
3158 if (!parser_next(parser)) {
3159 parseerror(parser, "expected switch operand");
3162 /* parse the operand */
3163 operand = parse_expression_leave(parser, false, false, false);
3167 switchnode = ast_switch_new(ctx, operand);
3170 if (parser->tok != ')') {
3171 ast_delete(switchnode);
3172 parseerror(parser, "expected closing paren after 'switch' operand");
3176 /* parse over the opening paren */
3177 if (!parser_next(parser) || parser->tok != '{') {
3178 ast_delete(switchnode);
3179 parseerror(parser, "expected list of cases");
3183 if (!parser_next(parser)) {
3184 ast_delete(switchnode);
3185 parseerror(parser, "expected 'case' or 'default'");
3189 /* new block; allow some variables to be declared here */
3190 parser_enterblock(parser);
3193 if (parser->tok == TOKEN_IDENT)
3194 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3195 if (typevar || parser->tok == TOKEN_TYPENAME) {
3196 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3197 ast_delete(switchnode);
3202 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3204 if (cvq == CV_WRONG) {
3205 ast_delete(switchnode);
3208 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3209 ast_delete(switchnode);
3218 while (parser->tok != '}') {
3219 ast_block *caseblock;
3221 if (!strcmp(parser_tokval(parser), "case")) {
3222 if (!parser_next(parser)) {
3223 ast_delete(switchnode);
3224 parseerror(parser, "expected expression for case");
3227 swcase.value = parse_expression_leave(parser, false, false, false);
3228 if (!swcase.value) {
3229 ast_delete(switchnode);
3230 parseerror(parser, "expected expression for case");
3233 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3234 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3235 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3241 else if (!strcmp(parser_tokval(parser), "default")) {
3242 swcase.value = NULL;
3243 if (!parser_next(parser)) {
3244 ast_delete(switchnode);
3245 parseerror(parser, "expected colon");
3250 ast_delete(switchnode);
3251 parseerror(parser, "expected 'case' or 'default'");
3255 /* Now the colon and body */
3256 if (parser->tok != ':') {
3257 if (swcase.value) ast_unref(swcase.value);
3258 ast_delete(switchnode);
3259 parseerror(parser, "expected colon");
3263 if (!parser_next(parser)) {
3264 if (swcase.value) ast_unref(swcase.value);
3265 ast_delete(switchnode);
3266 parseerror(parser, "expected statements or case");
3269 caseblock = ast_block_new(parser_ctx(parser));
3271 if (swcase.value) ast_unref(swcase.value);
3272 ast_delete(switchnode);
3275 swcase.code = (ast_expression*)caseblock;
3276 vec_push(switchnode->cases, swcase);
3278 ast_expression *expr;
3279 if (parser->tok == '}')
3281 if (parser->tok == TOKEN_KEYWORD) {
3282 if (!strcmp(parser_tokval(parser), "case") ||
3283 !strcmp(parser_tokval(parser), "default"))
3288 if (!parse_statement(parser, caseblock, &expr, true)) {
3289 ast_delete(switchnode);
3294 if (!ast_block_add_expr(caseblock, expr)) {
3295 ast_delete(switchnode);
3301 parser_leaveblock(parser);
3304 if (parser->tok != '}') {
3305 ast_delete(switchnode);
3306 parseerror(parser, "expected closing paren of case list");
3309 if (!parser_next(parser)) {
3310 ast_delete(switchnode);
3311 parseerror(parser, "parse error after switch");
3314 *out = (ast_expression*)switchnode;
3318 ast_expression *parser_builtin_pow(parser_t *parser) {
3320 * float __builtin_pow(float x, float y) {
3321 * float value = 1.0f;
3328 * value = x * value;
3333 static ast_function *pow_func = NULL;
3334 static ast_value *pow_func_val = NULL;
3336 ast_value *pow_arguments[2];
3337 ast_value *pow_value = ast_value_new (parser_ctx(parser), "value", TYPE_FLOAT);
3338 ast_block *pow_body = ast_block_new (parser_ctx(parser));
3339 ast_block *pow_loop_body = ast_block_new (parser_ctx(parser));
3340 ast_block *pow_loop_nest_body = ast_block_new (parser_ctx(parser));
3341 ast_loop *pow_loop = NULL;
3342 ast_loop *pow_loop_nest = NULL;
3344 pow_arguments[0] = ast_value_new (parser_ctx(parser), "x", TYPE_FLOAT);
3345 pow_arguments[1] = ast_value_new (parser_ctx(parser), "x", TYPE_FLOAT);
3346 pow_func_val = ast_value_new (parser_ctx(parser), "__builtin_pow", TYPE_FUNCTION);
3347 pow_func_val->expression.next = (ast_expression*)ast_value_new(parser_ctx(parser), "<float>", TYPE_FLOAT);
3349 vec_push(pow_func_val->expression.params, pow_arguments[0]);
3350 vec_push(pow_func_val->expression.params, pow_arguments[1]);
3352 pow_func = ast_function_new(parser_ctx(parser), "__builtin_pow", pow_func_val);
3355 vec_push(pow_body->locals, pow_value);
3357 vec_push(pow_body->exprs,
3358 (ast_expression*)ast_store_new(
3361 (ast_expression*)pow_value,
3362 (ast_expression*)parser_const_float_1(parser)
3367 vec_push(pow_loop_nest_body->exprs,
3368 (ast_expression*)ast_binstore_new(
3372 (ast_expression*)pow_arguments[1],
3373 (ast_expression*)parser_const_float(parser, 0.25f)
3376 vec_push(pow_loop_nest_body->exprs,
3377 (ast_expression*)ast_binstore_new(
3381 (ast_expression*)pow_arguments[0],
3382 (ast_expression*)pow_arguments[0]
3386 /* while (!(y&1)) */
3387 pow_loop_nest = ast_loop_new (
3390 (ast_expression*)ast_binary_new(
3393 (ast_expression*)pow_arguments[1],
3394 (ast_expression*)parser_const_float_1(parser)
3400 (ast_expression*)pow_loop_nest_body
3403 vec_push(pow_loop_body->exprs, (ast_expression*)pow_loop_nest);
3404 vec_push(pow_loop_body->exprs,
3405 (ast_expression*)ast_binstore_new(
3409 (ast_expression*)pow_arguments[1],
3410 (ast_expression*)parser_const_float_1(parser)
3413 vec_push(pow_loop_body->exprs,
3414 (ast_expression*)ast_binstore_new(
3418 (ast_expression*)pow_value,
3419 (ast_expression*)pow_arguments[0]
3423 /* while (y > 0) { */
3424 pow_loop = ast_loop_new(
3427 (ast_expression*)ast_binary_new(
3430 (ast_expression*)pow_arguments[1],
3431 (ast_expression*)parser_const_float_0(parser)
3437 (ast_expression*)pow_loop_body
3440 vec_push(pow_body->exprs, (ast_expression*)pow_loop);
3442 vec_push(pow_body->exprs,
3443 (ast_expression*)ast_return_new(
3445 (ast_expression*)pow_value
3449 vec_push(pow_func->blocks, pow_body);
3450 vec_push(parser->globals, (ast_expression*)pow_func_val);
3451 vec_push(parser->functions, pow_func);
3454 return (ast_expression*)pow_func_val;
3457 /* parse computed goto sides */
3458 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3459 ast_expression *on_true;
3460 ast_expression *on_false;
3461 ast_expression *cond;
3466 if (ast_istype(*side, ast_ternary)) {
3467 ast_ternary *tern = (ast_ternary*)*side;
3468 on_true = parse_goto_computed(parser, &tern->on_true);
3469 on_false = parse_goto_computed(parser, &tern->on_false);
3471 if (!on_true || !on_false) {
3472 parseerror(parser, "expected label or expression in ternary");
3473 if (on_true) ast_unref(on_true);
3474 if (on_false) ast_unref(on_false);
3482 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3483 } else if (ast_istype(*side, ast_label)) {
3484 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3485 ast_goto_set_label(gt, ((ast_label*)*side));
3487 return (ast_expression*)gt;
3492 static bool parse_goto(parser_t *parser, ast_expression **out)
3494 ast_goto *gt = NULL;
3495 ast_expression *lbl;
3497 if (!parser_next(parser))
3500 if (parser->tok != TOKEN_IDENT) {
3501 ast_expression *expression;
3503 /* could be an expression i.e computed goto :-) */
3504 if (parser->tok != '(') {
3505 parseerror(parser, "expected label name after `goto`");
3509 /* failed to parse expression for goto */
3510 if (!(expression = parse_expression(parser, false, true)) ||
3511 !(*out = parse_goto_computed(parser, &expression))) {
3512 parseerror(parser, "invalid goto expression");
3513 ast_unref(expression);
3520 /* not computed goto */
3521 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3522 lbl = parser_find_label(parser, gt->name);
3524 if (!ast_istype(lbl, ast_label)) {
3525 parseerror(parser, "internal error: label is not an ast_label");
3529 ast_goto_set_label(gt, (ast_label*)lbl);
3532 vec_push(parser->gotos, gt);
3534 if (!parser_next(parser) || parser->tok != ';') {
3535 parseerror(parser, "semicolon expected after goto label");
3538 if (!parser_next(parser)) {
3539 parseerror(parser, "parse error after goto");
3543 *out = (ast_expression*)gt;
3547 static bool parse_skipwhite(parser_t *parser)
3550 if (!parser_next(parser))
3552 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3553 return parser->tok < TOKEN_ERROR;
3556 static bool parse_eol(parser_t *parser)
3558 if (!parse_skipwhite(parser))
3560 return parser->tok == TOKEN_EOL;
3563 static bool parse_pragma_do(parser_t *parser)
3565 if (!parser_next(parser) ||
3566 parser->tok != TOKEN_IDENT ||
3567 strcmp(parser_tokval(parser), "pragma"))
3569 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3572 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3573 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3577 if (!strcmp(parser_tokval(parser), "noref")) {
3578 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3579 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3582 parser->noref = !!parser_token(parser)->constval.i;
3583 if (!parse_eol(parser)) {
3584 parseerror(parser, "parse error after `noref` pragma");
3590 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3597 static bool parse_pragma(parser_t *parser)
3600 parser->lex->flags.preprocessing = true;
3601 parser->lex->flags.mergelines = true;
3602 rv = parse_pragma_do(parser);
3603 if (parser->tok != TOKEN_EOL) {
3604 parseerror(parser, "junk after pragma");
3607 parser->lex->flags.preprocessing = false;
3608 parser->lex->flags.mergelines = false;
3609 if (!parser_next(parser)) {
3610 parseerror(parser, "parse error after pragma");
3616 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3618 bool noref, is_static;
3620 uint32_t qflags = 0;
3621 ast_value *typevar = NULL;
3622 char *vstring = NULL;
3626 if (parser->tok == TOKEN_IDENT)
3627 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3629 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3631 /* local variable */
3633 parseerror(parser, "cannot declare a variable from here");
3636 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3637 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3640 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3644 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3646 if (cvq == CV_WRONG)
3648 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3650 else if (parser->tok == TOKEN_KEYWORD)
3652 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3657 if (!parser_next(parser)) {
3658 parseerror(parser, "parse error after __builtin_debug_printtype");
3662 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3664 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3665 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3666 if (!parser_next(parser)) {
3667 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3673 if (!parse_statement(parser, block, out, allow_cases))
3676 con_out("__builtin_debug_printtype: got no output node\n");
3679 ast_type_to_string(*out, ty, sizeof(ty));
3680 con_out("__builtin_debug_printtype: `%s`\n", ty);
3685 else if (!strcmp(parser_tokval(parser), "return"))
3687 return parse_return(parser, block, out);
3689 else if (!strcmp(parser_tokval(parser), "if"))
3691 return parse_if(parser, block, out);
3693 else if (!strcmp(parser_tokval(parser), "while"))
3695 return parse_while(parser, block, out);
3697 else if (!strcmp(parser_tokval(parser), "do"))
3699 return parse_dowhile(parser, block, out);
3701 else if (!strcmp(parser_tokval(parser), "for"))
3703 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3704 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3707 return parse_for(parser, block, out);
3709 else if (!strcmp(parser_tokval(parser), "break"))
3711 return parse_break_continue(parser, block, out, false);
3713 else if (!strcmp(parser_tokval(parser), "continue"))
3715 return parse_break_continue(parser, block, out, true);
3717 else if (!strcmp(parser_tokval(parser), "switch"))
3719 return parse_switch(parser, block, out);
3721 else if (!strcmp(parser_tokval(parser), "case") ||
3722 !strcmp(parser_tokval(parser), "default"))
3725 parseerror(parser, "unexpected 'case' label");
3730 else if (!strcmp(parser_tokval(parser), "goto"))
3732 return parse_goto(parser, out);
3734 else if (!strcmp(parser_tokval(parser), "typedef"))
3736 if (!parser_next(parser)) {
3737 parseerror(parser, "expected type definition after 'typedef'");
3740 return parse_typedef(parser);
3742 parseerror(parser, "Unexpected keyword");
3745 else if (parser->tok == '{')
3748 inner = parse_block(parser);
3751 *out = (ast_expression*)inner;
3754 else if (parser->tok == ':')
3758 if (!parser_next(parser)) {
3759 parseerror(parser, "expected label name");
3762 if (parser->tok != TOKEN_IDENT) {
3763 parseerror(parser, "label must be an identifier");
3766 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3768 if (!label->undefined) {
3769 parseerror(parser, "label `%s` already defined", label->name);
3772 label->undefined = false;
3775 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3776 vec_push(parser->labels, label);
3778 *out = (ast_expression*)label;
3779 if (!parser_next(parser)) {
3780 parseerror(parser, "parse error after label");
3783 for (i = 0; i < vec_size(parser->gotos); ++i) {
3784 if (!strcmp(parser->gotos[i]->name, label->name)) {
3785 ast_goto_set_label(parser->gotos[i], label);
3786 vec_remove(parser->gotos, i, 1);
3792 else if (parser->tok == ';')
3794 if (!parser_next(parser)) {
3795 parseerror(parser, "parse error after empty statement");
3802 lex_ctx ctx = parser_ctx(parser);
3803 ast_expression *exp = parse_expression(parser, false, false);
3807 if (!ast_side_effects(exp)) {
3808 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3815 static bool parse_enum(parser_t *parser)
3818 ast_value **values = NULL;
3819 ast_value *var = NULL;
3822 ast_expression *old;
3824 if (!parser_next(parser) || parser->tok != '{') {
3825 parseerror(parser, "expected `{` after `enum` keyword");
3830 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3831 if (parser->tok == '}') {
3832 /* allow an empty enum */
3835 parseerror(parser, "expected identifier or `}`");
3839 old = parser_find_field(parser, parser_tokval(parser));
3841 old = parser_find_global(parser, parser_tokval(parser));
3843 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3844 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3848 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3849 vec_push(values, var);
3850 var->cvq = CV_CONST;
3851 var->hasvalue = true;
3852 var->constval.vfloat = num++;
3854 parser_addglobal(parser, var->name, (ast_expression*)var);
3856 if (!parser_next(parser)) {
3857 parseerror(parser, "expected `=`, `}` or comma after identifier");
3861 if (parser->tok == ',')
3863 if (parser->tok == '}')
3865 if (parser->tok != '=') {
3866 parseerror(parser, "expected `=`, `}` or comma after identifier");
3870 if (!parser_next(parser)) {
3871 parseerror(parser, "expected expression after `=`");
3875 /* We got a value! */
3876 old = parse_expression_leave(parser, true, false, false);
3877 asvalue = (ast_value*)old;
3878 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3879 compile_error(ast_ctx(var), "constant value or expression expected");
3882 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3884 if (parser->tok == '}')
3886 if (parser->tok != ',') {
3887 parseerror(parser, "expected `}` or comma after expression");
3892 if (parser->tok != '}') {
3893 parseerror(parser, "internal error: breaking without `}`");
3897 if (!parser_next(parser) || parser->tok != ';') {
3898 parseerror(parser, "expected semicolon after enumeration");
3902 if (!parser_next(parser)) {
3903 parseerror(parser, "parse error after enumeration");
3915 static bool parse_block_into(parser_t *parser, ast_block *block)
3919 parser_enterblock(parser);
3921 if (!parser_next(parser)) { /* skip the '{' */
3922 parseerror(parser, "expected function body");
3926 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3928 ast_expression *expr = NULL;
3929 if (parser->tok == '}')
3932 if (!parse_statement(parser, block, &expr, false)) {
3933 /* parseerror(parser, "parse error"); */
3939 if (!ast_block_add_expr(block, expr)) {
3946 if (parser->tok != '}') {
3949 (void)parser_next(parser);
3953 if (!parser_leaveblock(parser))
3955 return retval && !!block;
3958 static ast_block* parse_block(parser_t *parser)
3961 block = ast_block_new(parser_ctx(parser));
3964 if (!parse_block_into(parser, block)) {
3965 ast_block_delete(block);
3971 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3973 if (parser->tok == '{') {
3974 *out = (ast_expression*)parse_block(parser);
3977 return parse_statement(parser, NULL, out, false);
3980 static bool create_vector_members(ast_value *var, ast_member **me)
3983 size_t len = strlen(var->name);
3985 for (i = 0; i < 3; ++i) {
3986 char *name = (char*)mem_a(len+3);
3987 memcpy(name, var->name, len);
3989 name[len+1] = 'x'+i;
3991 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
4000 do { ast_member_delete(me[--i]); } while(i);
4004 static bool parse_function_body(parser_t *parser, ast_value *var)
4006 ast_block *block = NULL;
4011 ast_expression *framenum = NULL;
4012 ast_expression *nextthink = NULL;
4013 /* None of the following have to be deleted */
4014 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
4015 ast_expression *gbl_time = NULL, *gbl_self = NULL;
4016 bool has_frame_think;
4020 has_frame_think = false;
4021 old = parser->function;
4023 if (var->expression.flags & AST_FLAG_ALIAS) {
4024 parseerror(parser, "function aliases cannot have bodies");
4028 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
4029 parseerror(parser, "gotos/labels leaking");
4033 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4034 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
4035 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
4041 if (parser->tok == '[') {
4042 /* got a frame definition: [ framenum, nextthink ]
4043 * this translates to:
4044 * self.frame = framenum;
4045 * self.nextthink = time + 0.1;
4046 * self.think = nextthink;
4050 fld_think = parser_find_field(parser, "think");
4051 fld_nextthink = parser_find_field(parser, "nextthink");
4052 fld_frame = parser_find_field(parser, "frame");
4053 if (!fld_think || !fld_nextthink || !fld_frame) {
4054 parseerror(parser, "cannot use [frame,think] notation without the required fields");
4055 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
4058 gbl_time = parser_find_global(parser, "time");
4059 gbl_self = parser_find_global(parser, "self");
4060 if (!gbl_time || !gbl_self) {
4061 parseerror(parser, "cannot use [frame,think] notation without the required globals");
4062 parseerror(parser, "please declare the following globals: `time`, `self`");
4066 if (!parser_next(parser))
4069 framenum = parse_expression_leave(parser, true, false, false);
4071 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
4074 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
4075 ast_unref(framenum);
4076 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
4080 if (parser->tok != ',') {
4081 ast_unref(framenum);
4082 parseerror(parser, "expected comma after frame number in [frame,think] notation");
4083 parseerror(parser, "Got a %i\n", parser->tok);
4087 if (!parser_next(parser)) {
4088 ast_unref(framenum);
4092 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
4094 /* qc allows the use of not-yet-declared functions here
4095 * - this automatically creates a prototype */
4096 ast_value *thinkfunc;
4097 ast_expression *functype = fld_think->expression.next;
4099 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
4100 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
4101 ast_unref(framenum);
4102 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
4105 ast_type_adopt(thinkfunc, functype);
4107 if (!parser_next(parser)) {
4108 ast_unref(framenum);
4109 ast_delete(thinkfunc);
4113 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
4115 nextthink = (ast_expression*)thinkfunc;
4118 nextthink = parse_expression_leave(parser, true, false, false);
4120 ast_unref(framenum);
4121 parseerror(parser, "expected a think-function in [frame,think] notation");
4126 if (!ast_istype(nextthink, ast_value)) {
4127 parseerror(parser, "think-function in [frame,think] notation must be a constant");
4131 if (retval && parser->tok != ']') {
4132 parseerror(parser, "expected closing `]` for [frame,think] notation");
4136 if (retval && !parser_next(parser)) {
4140 if (retval && parser->tok != '{') {
4141 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
4146 ast_unref(nextthink);
4147 ast_unref(framenum);
4151 has_frame_think = true;
4154 block = ast_block_new(parser_ctx(parser));
4156 parseerror(parser, "failed to allocate block");
4157 if (has_frame_think) {
4158 ast_unref(nextthink);
4159 ast_unref(framenum);
4164 if (has_frame_think) {
4166 ast_expression *self_frame;
4167 ast_expression *self_nextthink;
4168 ast_expression *self_think;
4169 ast_expression *time_plus_1;
4170 ast_store *store_frame;
4171 ast_store *store_nextthink;
4172 ast_store *store_think;
4174 ctx = parser_ctx(parser);
4175 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
4176 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
4177 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
4179 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
4180 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
4182 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
4183 if (self_frame) ast_delete(self_frame);
4184 if (self_nextthink) ast_delete(self_nextthink);
4185 if (self_think) ast_delete(self_think);
4186 if (time_plus_1) ast_delete(time_plus_1);
4192 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
4193 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
4194 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
4197 ast_delete(self_frame);
4200 if (!store_nextthink) {
4201 ast_delete(self_nextthink);
4205 ast_delete(self_think);
4209 if (store_frame) ast_delete(store_frame);
4210 if (store_nextthink) ast_delete(store_nextthink);
4211 if (store_think) ast_delete(store_think);
4214 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
4215 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
4216 !ast_block_add_expr(block, (ast_expression*)store_think))
4223 parseerror(parser, "failed to generate code for [frame,think]");
4224 ast_unref(nextthink);
4225 ast_unref(framenum);
4231 if (var->hasvalue) {
4232 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
4233 ast_block_delete(block);
4237 func = ast_function_new(ast_ctx(var), var->name, var);
4239 parseerror(parser, "failed to allocate function for `%s`", var->name);
4240 ast_block_delete(block);
4243 vec_push(parser->functions, func);
4245 parser_enterblock(parser);
4247 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
4249 ast_value *param = var->expression.params[parami];
4252 if (param->expression.vtype != TYPE_VECTOR &&
4253 (param->expression.vtype != TYPE_FIELD ||
4254 param->expression.next->expression.vtype != TYPE_VECTOR))
4259 if (!create_vector_members(param, me)) {
4260 ast_block_delete(block);
4264 for (e = 0; e < 3; ++e) {
4265 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4266 ast_block_collect(block, (ast_expression*)me[e]);
4270 if (var->argcounter) {
4271 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4272 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4276 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4278 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4279 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4280 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4281 varargs->expression.count = 0;
4282 snprintf(name, sizeof(name), "%s##va##SET", var->name);
4283 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4284 ast_delete(varargs);
4285 ast_block_delete(block);
4288 snprintf(name, sizeof(name), "%s##va##GET", var->name);
4289 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4290 ast_delete(varargs);
4291 ast_block_delete(block);
4294 func->varargs = varargs;
4296 func->fixedparams = parser_const_float(parser, vec_size(var->expression.params));
4299 parser->function = func;
4300 if (!parse_block_into(parser, block)) {
4301 ast_block_delete(block);
4305 vec_push(func->blocks, block);
4307 parser->function = old;
4308 if (!parser_leaveblock(parser))
4310 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4311 parseerror(parser, "internal error: local scopes left");
4315 if (parser->tok == ';')
4316 return parser_next(parser);
4317 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4318 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4322 (void)!parser_leaveblock(parser);
4323 vec_pop(parser->functions);
4324 ast_function_delete(func);
4325 var->constval.vfunc = NULL;
4328 parser->function = old;
4332 static ast_expression *array_accessor_split(
4337 ast_expression *left,
4338 ast_expression *right
4344 lex_ctx ctx = ast_ctx(array);
4346 if (!left || !right) {
4347 if (left) ast_delete(left);
4348 if (right) ast_delete(right);
4352 cmp = ast_binary_new(ctx, INSTR_LT,
4353 (ast_expression*)index,
4354 (ast_expression*)parser_const_float(parser, middle));
4358 parseerror(parser, "internal error: failed to create comparison for array setter");
4362 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4364 ast_delete(cmp); /* will delete left and right */
4365 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4369 return (ast_expression*)ifthen;
4372 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4374 lex_ctx ctx = ast_ctx(array);
4376 if (from+1 == afterend) {
4377 /* set this value */
4380 ast_array_index *subscript;
4382 int assignop = type_store_instr[value->expression.vtype];
4384 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
4385 assignop = INSTR_STORE_V;
4387 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4391 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4393 ast_delete(subscript);
4397 block = ast_block_new(ctx);
4403 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4408 ret = ast_return_new(ctx, NULL);
4414 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4419 return (ast_expression*)block;
4421 ast_expression *left, *right;
4422 size_t diff = afterend - from;
4423 size_t middle = from + diff/2;
4424 left = array_setter_node(parser, array, index, value, from, middle);
4425 right = array_setter_node(parser, array, index, value, middle, afterend);
4426 return array_accessor_split(parser, array, index, middle, left, right);
4430 static ast_expression *array_field_setter_node(
4439 lex_ctx ctx = ast_ctx(array);
4441 if (from+1 == afterend) {
4442 /* set this value */
4445 ast_entfield *entfield;
4446 ast_array_index *subscript;
4448 int assignop = type_storep_instr[value->expression.vtype];
4450 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
4451 assignop = INSTR_STOREP_V;
4453 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4457 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4458 subscript->expression.vtype = TYPE_FIELD;
4460 entfield = ast_entfield_new_force(ctx,
4461 (ast_expression*)entity,
4462 (ast_expression*)subscript,
4463 (ast_expression*)subscript);
4465 ast_delete(subscript);
4469 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4471 ast_delete(entfield);
4475 block = ast_block_new(ctx);
4481 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4486 ret = ast_return_new(ctx, NULL);
4492 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4497 return (ast_expression*)block;
4499 ast_expression *left, *right;
4500 size_t diff = afterend - from;
4501 size_t middle = from + diff/2;
4502 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4503 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4504 return array_accessor_split(parser, array, index, middle, left, right);
4508 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4510 lex_ctx ctx = ast_ctx(array);
4512 if (from+1 == afterend) {
4514 ast_array_index *subscript;
4516 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4520 ret = ast_return_new(ctx, (ast_expression*)subscript);
4522 ast_delete(subscript);
4526 return (ast_expression*)ret;
4528 ast_expression *left, *right;
4529 size_t diff = afterend - from;
4530 size_t middle = from + diff/2;
4531 left = array_getter_node(parser, array, index, from, middle);
4532 right = array_getter_node(parser, array, index, middle, afterend);
4533 return array_accessor_split(parser, array, index, middle, left, right);
4537 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4539 ast_function *func = NULL;
4540 ast_value *fval = NULL;
4541 ast_block *body = NULL;
4543 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4545 parseerror(parser, "failed to create accessor function value");
4549 func = ast_function_new(ast_ctx(array), funcname, fval);
4552 parseerror(parser, "failed to create accessor function node");
4556 body = ast_block_new(ast_ctx(array));
4558 parseerror(parser, "failed to create block for array accessor");
4564 vec_push(func->blocks, body);
4567 vec_push(parser->accessors, fval);
4572 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4574 ast_value *index = NULL;
4575 ast_value *value = NULL;
4579 if (!ast_istype(array->expression.next, ast_value)) {
4580 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4584 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4586 func = fval->constval.vfunc;
4587 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4589 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4590 value = ast_value_copy((ast_value*)array->expression.next);
4592 if (!index || !value) {
4593 parseerror(parser, "failed to create locals for array accessor");
4596 (void)!ast_value_set_name(value, "value"); /* not important */
4597 vec_push(fval->expression.params, index);
4598 vec_push(fval->expression.params, value);
4600 array->setter = fval;
4603 if (index) ast_delete(index);
4604 if (value) ast_delete(value);
4610 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4612 ast_expression *root = NULL;
4613 root = array_setter_node(parser, array,
4614 array->setter->expression.params[0],
4615 array->setter->expression.params[1],
4616 0, array->expression.count);
4618 parseerror(parser, "failed to build accessor search tree");
4621 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4628 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4630 if (!parser_create_array_setter_proto(parser, array, funcname))
4632 return parser_create_array_setter_impl(parser, array);
4635 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4637 ast_expression *root = NULL;
4638 ast_value *entity = NULL;
4639 ast_value *index = NULL;
4640 ast_value *value = NULL;
4644 if (!ast_istype(array->expression.next, ast_value)) {
4645 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4649 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4651 func = fval->constval.vfunc;
4652 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4654 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4655 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4656 value = ast_value_copy((ast_value*)array->expression.next);
4657 if (!entity || !index || !value) {
4658 parseerror(parser, "failed to create locals for array accessor");
4661 (void)!ast_value_set_name(value, "value"); /* not important */
4662 vec_push(fval->expression.params, entity);
4663 vec_push(fval->expression.params, index);
4664 vec_push(fval->expression.params, value);
4666 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4668 parseerror(parser, "failed to build accessor search tree");
4672 array->setter = fval;
4673 return ast_block_add_expr(func->blocks[0], root);
4675 if (entity) ast_delete(entity);
4676 if (index) ast_delete(index);
4677 if (value) ast_delete(value);
4678 if (root) ast_delete(root);
4684 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4686 ast_value *index = NULL;
4690 /* NOTE: checking array->expression.next rather than elemtype since
4691 * for fields elemtype is a temporary fieldtype.
4693 if (!ast_istype(array->expression.next, ast_value)) {
4694 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4698 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4700 func = fval->constval.vfunc;
4701 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4703 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4706 parseerror(parser, "failed to create locals for array accessor");
4709 vec_push(fval->expression.params, index);
4711 array->getter = fval;
4714 if (index) ast_delete(index);
4720 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4722 ast_expression *root = NULL;
4724 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4726 parseerror(parser, "failed to build accessor search tree");
4729 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4736 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4738 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4740 return parser_create_array_getter_impl(parser, array);
4743 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4744 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4752 bool variadic = false;
4753 ast_value *varparam = NULL;
4754 char *argcounter = NULL;
4756 ctx = parser_ctx(parser);
4758 /* for the sake of less code we parse-in in this function */
4759 if (!parser_next(parser)) {
4760 parseerror(parser, "expected parameter list");
4766 /* parse variables until we hit a closing paren */
4767 while (parser->tok != ')') {
4769 /* there must be commas between them */
4770 if (parser->tok != ',') {
4771 parseerror(parser, "expected comma or end of parameter list");
4774 if (!parser_next(parser)) {
4775 parseerror(parser, "expected parameter");
4781 if (parser->tok == TOKEN_DOTS) {
4782 /* '...' indicates a varargs function */
4784 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4785 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4788 if (parser->tok == TOKEN_IDENT) {
4789 argcounter = util_strdup(parser_tokval(parser));
4790 if (!parser_next(parser) || parser->tok != ')') {
4791 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4798 /* for anything else just parse a typename */
4799 param = parse_typename(parser, NULL, NULL);
4802 vec_push(params, param);
4803 if (param->expression.vtype >= TYPE_VARIANT) {
4804 char tname[1024]; /* typename is reserved in C++ */
4805 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4806 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4809 /* type-restricted varargs */
4810 if (parser->tok == TOKEN_DOTS) {
4812 varparam = vec_last(params);
4814 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4815 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4818 if (parser->tok == TOKEN_IDENT) {
4819 argcounter = util_strdup(parser_tokval(parser));
4820 if (!parser_next(parser) || parser->tok != ')') {
4821 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4829 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4833 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4834 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4837 if (!parser_next(parser)) {
4838 parseerror(parser, "parse error after typename");
4842 /* now turn 'var' into a function type */
4843 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4844 fval->expression.next = (ast_expression*)var;
4846 fval->expression.flags |= AST_FLAG_VARIADIC;
4849 var->expression.params = params;
4850 var->expression.varparam = (ast_expression*)varparam;
4851 var->argcounter = argcounter;
4860 for (i = 0; i < vec_size(params); ++i)
4861 ast_delete(params[i]);
4866 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4868 ast_expression *cexp;
4869 ast_value *cval, *tmp;
4872 ctx = parser_ctx(parser);
4874 if (!parser_next(parser)) {
4876 parseerror(parser, "expected array-size");
4880 cexp = parse_expression_leave(parser, true, false, false);
4882 if (!cexp || !ast_istype(cexp, ast_value)) {
4886 parseerror(parser, "expected array-size as constant positive integer");
4889 cval = (ast_value*)cexp;
4891 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4892 tmp->expression.next = (ast_expression*)var;
4895 if (cval->expression.vtype == TYPE_INTEGER)
4896 tmp->expression.count = cval->constval.vint;
4897 else if (cval->expression.vtype == TYPE_FLOAT)
4898 tmp->expression.count = cval->constval.vfloat;
4902 parseerror(parser, "array-size must be a positive integer constant");
4907 if (parser->tok != ']') {
4909 parseerror(parser, "expected ']' after array-size");
4912 if (!parser_next(parser)) {
4914 parseerror(parser, "error after parsing array size");
4920 /* Parse a complete typename.
4921 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4922 * but when parsing variables separated by comma
4923 * 'storebase' should point to where the base-type should be kept.
4924 * The base type makes up every bit of type information which comes *before* the
4927 * The following will be parsed in its entirety:
4929 * The 'basetype' in this case is 'void()'
4930 * and if there's a comma after it, say:
4932 * then the type-information 'void()' can be stored in 'storebase'
4934 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4936 ast_value *var, *tmp;
4939 const char *name = NULL;
4940 bool isfield = false;
4941 bool wasarray = false;
4942 size_t morefields = 0;
4944 ctx = parser_ctx(parser);
4946 /* types may start with a dot */
4947 if (parser->tok == '.') {
4949 /* if we parsed a dot we need a typename now */
4950 if (!parser_next(parser)) {
4951 parseerror(parser, "expected typename for field definition");
4955 /* Further dots are handled seperately because they won't be part of the
4958 while (parser->tok == '.') {
4960 if (!parser_next(parser)) {
4961 parseerror(parser, "expected typename for field definition");
4966 if (parser->tok == TOKEN_IDENT)
4967 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4968 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4969 parseerror(parser, "expected typename");
4973 /* generate the basic type value */
4974 if (cached_typedef) {
4975 var = ast_value_copy(cached_typedef);
4976 ast_value_set_name(var, "<type(from_def)>");
4978 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4980 for (; morefields; --morefields) {
4981 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4982 tmp->expression.next = (ast_expression*)var;
4986 /* do not yet turn into a field - remember:
4987 * .void() foo; is a field too
4988 * .void()() foo; is a function
4992 if (!parser_next(parser)) {
4994 parseerror(parser, "parse error after typename");
4998 /* an opening paren now starts the parameter-list of a function
4999 * this is where original-QC has parameter lists.
5000 * We allow a single parameter list here.
5001 * Much like fteqcc we don't allow `float()() x`
5003 if (parser->tok == '(') {
5004 var = parse_parameter_list(parser, var);
5009 /* store the base if requested */
5011 *storebase = ast_value_copy(var);
5013 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5014 tmp->expression.next = (ast_expression*)*storebase;
5019 /* there may be a name now */
5020 if (parser->tok == TOKEN_IDENT) {
5021 name = util_strdup(parser_tokval(parser));
5023 if (!parser_next(parser)) {
5025 parseerror(parser, "error after variable or field declaration");
5030 /* now this may be an array */
5031 if (parser->tok == '[') {
5033 var = parse_arraysize(parser, var);
5038 /* This is the point where we can turn it into a field */
5040 /* turn it into a field if desired */
5041 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5042 tmp->expression.next = (ast_expression*)var;
5046 /* now there may be function parens again */
5047 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5048 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5049 if (parser->tok == '(' && wasarray)
5050 parseerror(parser, "arrays as part of a return type is not supported");
5051 while (parser->tok == '(') {
5052 var = parse_parameter_list(parser, var);
5060 /* finally name it */
5062 if (!ast_value_set_name(var, name)) {
5064 parseerror(parser, "internal error: failed to set name");
5067 /* free the name, ast_value_set_name duplicates */
5074 static bool parse_typedef(parser_t *parser)
5076 ast_value *typevar, *oldtype;
5077 ast_expression *old;
5079 typevar = parse_typename(parser, NULL, NULL);
5084 if ( (old = parser_find_var(parser, typevar->name)) ) {
5085 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
5086 " -> `%s` has been declared here: %s:%i",
5087 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
5088 ast_delete(typevar);
5092 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
5093 parseerror(parser, "type `%s` has already been declared here: %s:%i",
5094 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
5095 ast_delete(typevar);
5099 vec_push(parser->_typedefs, typevar);
5100 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
5102 if (parser->tok != ';') {
5103 parseerror(parser, "expected semicolon after typedef");
5106 if (!parser_next(parser)) {
5107 parseerror(parser, "parse error after typedef");
5114 static const char *cvq_to_str(int cvq) {
5116 case CV_NONE: return "none";
5117 case CV_VAR: return "`var`";
5118 case CV_CONST: return "`const`";
5119 default: return "<INVALID>";
5123 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
5126 if (proto->cvq != var->cvq) {
5127 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
5128 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5129 parser->tok == '='))
5131 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
5132 "`%s` declared with different qualifiers: %s\n"
5133 " -> previous declaration here: %s:%i uses %s",
5134 var->name, cvq_to_str(var->cvq),
5135 ast_ctx(proto).file, ast_ctx(proto).line,
5136 cvq_to_str(proto->cvq));
5139 av = (var ->expression.flags & AST_FLAG_NORETURN);
5140 ao = (proto->expression.flags & AST_FLAG_NORETURN);
5142 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
5143 "`%s` declared with different attributes%s\n"
5144 " -> previous declaration here: %s:%i",
5145 var->name, (av ? ": noreturn" : ""),
5146 ast_ctx(proto).file, ast_ctx(proto).line,
5147 (ao ? ": noreturn" : ""));
5152 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)
5156 ast_expression *old;
5160 ast_value *basetype = NULL;
5162 bool isparam = false;
5163 bool isvector = false;
5164 bool cleanvar = true;
5165 bool wasarray = false;
5169 if (!localblock && is_static)
5170 parseerror(parser, "`static` qualifier is not supported in global scope");
5172 /* get the first complete variable */
5173 var = parse_typename(parser, &basetype, cached_typedef);
5176 ast_delete(basetype);
5184 /* Part 0: finish the type */
5185 if (parser->tok == '(') {
5186 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5187 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5188 var = parse_parameter_list(parser, var);
5194 /* we only allow 1-dimensional arrays */
5195 if (parser->tok == '[') {
5197 var = parse_arraysize(parser, var);
5203 if (parser->tok == '(' && wasarray) {
5204 parseerror(parser, "arrays as part of a return type is not supported");
5205 /* we'll still parse the type completely for now */
5207 /* for functions returning functions */
5208 while (parser->tok == '(') {
5209 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5210 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5211 var = parse_parameter_list(parser, var);
5218 var->cvq = qualifier;
5219 var->expression.flags |= qflags;
5222 * store the vstring back to var for alias and
5223 * deprecation messages.
5225 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5226 var->expression.flags & AST_FLAG_ALIAS)
5227 var->desc = vstring;
5230 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5231 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5232 * is then filled with the previous definition and the parameter-names replaced.
5234 if (!strcmp(var->name, "nil")) {
5235 if (OPTS_FLAG(UNTYPED_NIL)) {
5236 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5237 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5239 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5242 /* Deal with end_sys_ vars */
5244 if (!strcmp(var->name, "end_sys_globals")) {
5246 parser->crc_globals = vec_size(parser->globals);
5249 else if (!strcmp(var->name, "end_sys_fields")) {
5251 parser->crc_fields = vec_size(parser->fields);
5254 if (was_end && var->expression.vtype == TYPE_FIELD) {
5255 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5256 "global '%s' hint should not be a field",
5257 parser_tokval(parser)))
5264 if (!nofields && var->expression.vtype == TYPE_FIELD)
5266 /* deal with field declarations */
5267 old = parser_find_field(parser, var->name);
5269 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5270 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5279 parseerror(parser, "field `%s` already declared here: %s:%i",
5280 var->name, ast_ctx(old).file, ast_ctx(old).line);
5285 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5286 (old = parser_find_global(parser, var->name)))
5288 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5289 parseerror(parser, "field `%s` already declared here: %s:%i",
5290 var->name, ast_ctx(old).file, ast_ctx(old).line);
5297 /* deal with other globals */
5298 old = parser_find_global(parser, var->name);
5299 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
5301 /* This is a function which had a prototype */
5302 if (!ast_istype(old, ast_value)) {
5303 parseerror(parser, "internal error: prototype is not an ast_value");
5307 proto = (ast_value*)old;
5308 proto->desc = var->desc;
5309 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5310 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5312 ast_ctx(proto).file, ast_ctx(proto).line);
5316 /* we need the new parameter-names */
5317 for (i = 0; i < vec_size(proto->expression.params); ++i)
5318 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5319 if (!parser_check_qualifiers(parser, var, proto)) {
5326 proto->expression.flags |= var->expression.flags;
5334 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5335 "global `%s` already declared here: %s:%i",
5336 var->name, ast_ctx(old).file, ast_ctx(old).line))
5341 proto = (ast_value*)old;
5342 if (!ast_istype(old, ast_value)) {
5343 parseerror(parser, "internal error: not an ast_value");
5348 if (!parser_check_qualifiers(parser, var, proto)) {
5353 proto->expression.flags |= var->expression.flags;
5357 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5358 (old = parser_find_field(parser, var->name)))
5360 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5361 parseerror(parser, "global `%s` already declared here: %s:%i",
5362 var->name, ast_ctx(old).file, ast_ctx(old).line);
5369 else /* it's not a global */
5371 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5372 if (old && !isparam) {
5373 parseerror(parser, "local `%s` already declared here: %s:%i",
5374 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5378 old = parser_find_local(parser, var->name, 0, &isparam);
5379 if (old && isparam) {
5380 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5381 "local `%s` is shadowing a parameter", var->name))
5383 parseerror(parser, "local `%s` already declared here: %s:%i",
5384 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5388 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5396 /* in a noref section we simply bump the usecount */
5397 if (noref || parser->noref)
5401 * Create the global/local, and deal with vector types.
5404 if (var->expression.vtype == TYPE_VECTOR)
5406 else if (var->expression.vtype == TYPE_FIELD &&
5407 var->expression.next->expression.vtype == TYPE_VECTOR)
5411 if (!create_vector_members(var, me)) {
5418 /* deal with global variables, fields, functions */
5419 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5420 var->isfield = true;
5421 vec_push(parser->fields, (ast_expression*)var);
5422 util_htset(parser->htfields, var->name, var);
5424 for (i = 0; i < 3; ++i) {
5425 vec_push(parser->fields, (ast_expression*)me[i]);
5426 util_htset(parser->htfields, me[i]->name, me[i]);
5431 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5432 parser_addglobal(parser, var->name, (ast_expression*)var);
5434 for (i = 0; i < 3; ++i) {
5435 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5439 ast_expression *find = parser_find_global(parser, var->desc);
5442 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5446 if (var->expression.vtype != find->expression.vtype) {
5450 ast_type_to_string(find, ty1, sizeof(ty1));
5451 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5453 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5460 * add alias to aliases table and to corrector
5461 * so corrections can apply for aliases as well.
5463 util_htset(parser->aliases, var->name, find);
5466 * add to corrector so corrections can work
5467 * even for aliases too.
5470 vec_last(parser->correct_variables),
5471 &vec_last(parser->correct_variables_score),
5475 /* generate aliases for vector components */
5479 util_asprintf(&buffer[0], "%s_x", var->desc);
5480 util_asprintf(&buffer[1], "%s_y", var->desc);
5481 util_asprintf(&buffer[2], "%s_z", var->desc);
5483 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5484 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5485 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5492 * add to corrector so corrections can work
5493 * even for aliases too.
5496 vec_last(parser->correct_variables),
5497 &vec_last(parser->correct_variables_score),
5501 vec_last(parser->correct_variables),
5502 &vec_last(parser->correct_variables_score),
5506 vec_last(parser->correct_variables),
5507 &vec_last(parser->correct_variables_score),
5515 /* a static adds itself to be generated like any other global
5516 * but is added to the local namespace instead
5518 char *defname = NULL;
5519 size_t prefix_len, ln;
5521 ln = strlen(parser->function->name);
5522 vec_append(defname, ln, parser->function->name);
5524 vec_append(defname, 2, "::");
5525 /* remember the length up to here */
5526 prefix_len = vec_size(defname);
5528 /* Add it to the local scope */
5529 util_htset(vec_last(parser->variables), var->name, (void*)var);
5533 vec_last(parser->correct_variables),
5534 &vec_last(parser->correct_variables_score),
5538 /* now rename the global */
5539 ln = strlen(var->name);
5540 vec_append(defname, ln, var->name);
5541 ast_value_set_name(var, defname);
5543 /* push it to the to-be-generated globals */
5544 vec_push(parser->globals, (ast_expression*)var);
5546 /* same game for the vector members */
5548 for (i = 0; i < 3; ++i) {
5549 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5553 vec_last(parser->correct_variables),
5554 &vec_last(parser->correct_variables_score),
5558 vec_shrinkto(defname, prefix_len);
5559 ln = strlen(me[i]->name);
5560 vec_append(defname, ln, me[i]->name);
5561 ast_member_set_name(me[i], defname);
5563 vec_push(parser->globals, (ast_expression*)me[i]);
5568 vec_push(localblock->locals, var);
5569 parser_addlocal(parser, var->name, (ast_expression*)var);
5571 for (i = 0; i < 3; ++i) {
5572 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5573 ast_block_collect(localblock, (ast_expression*)me[i]);
5579 me[0] = me[1] = me[2] = NULL;
5584 if (var->expression.vtype == TYPE_ARRAY) {
5586 snprintf(name, sizeof(name), "%s##SET", var->name);
5587 if (!parser_create_array_setter(parser, var, name))
5589 snprintf(name, sizeof(name), "%s##GET", var->name);
5590 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5593 else if (!localblock && !nofields &&
5594 var->expression.vtype == TYPE_FIELD &&
5595 var->expression.next->expression.vtype == TYPE_ARRAY)
5598 ast_expression *telem;
5600 ast_value *array = (ast_value*)var->expression.next;
5602 if (!ast_istype(var->expression.next, ast_value)) {
5603 parseerror(parser, "internal error: field element type must be an ast_value");
5607 snprintf(name, sizeof(name), "%s##SETF", var->name);
5608 if (!parser_create_array_field_setter(parser, array, name))
5611 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5612 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5613 tfield->expression.next = telem;
5614 snprintf(name, sizeof(name), "%s##GETFP", var->name);
5615 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5623 if (parser->tok == ';') {
5624 ast_delete(basetype);
5625 if (!parser_next(parser)) {
5626 parseerror(parser, "error after variable declaration");
5632 if (parser->tok == ',')
5636 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5639 parseerror(parser, "missing comma or semicolon while parsing variables");
5643 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5644 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5645 "initializing expression turns variable `%s` into a constant in this standard",
5652 if (parser->tok != '{') {
5653 if (parser->tok != '=') {
5654 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5658 if (!parser_next(parser)) {
5659 parseerror(parser, "error parsing initializer");
5663 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5664 parseerror(parser, "expected '=' before function body in this standard");
5667 if (parser->tok == '#') {
5668 ast_function *func = NULL;
5671 parseerror(parser, "cannot declare builtins within functions");
5674 if (var->expression.vtype != TYPE_FUNCTION) {
5675 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5678 if (!parser_next(parser)) {
5679 parseerror(parser, "expected builtin number");
5682 if (parser->tok != TOKEN_INTCONST) {
5683 parseerror(parser, "builtin number must be an integer constant");
5686 if (parser_token(parser)->constval.i < 0) {
5687 parseerror(parser, "builtin number must be an integer greater than zero");
5691 if (var->hasvalue) {
5692 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5693 "builtin `%s` has already been defined\n"
5694 " -> previous declaration here: %s:%i",
5695 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5699 func = ast_function_new(ast_ctx(var), var->name, var);
5701 parseerror(parser, "failed to allocate function for `%s`", var->name);
5704 vec_push(parser->functions, func);
5706 func->builtin = -parser_token(parser)->constval.i-1;
5709 if (!parser_next(parser)) {
5710 parseerror(parser, "expected comma or semicolon");
5712 ast_function_delete(func);
5713 var->constval.vfunc = NULL;
5717 else if (parser->tok == '{' || parser->tok == '[')
5720 parseerror(parser, "cannot declare functions within functions");
5725 ast_ctx(proto) = parser_ctx(parser);
5727 if (!parse_function_body(parser, var))
5729 ast_delete(basetype);
5730 for (i = 0; i < vec_size(parser->gotos); ++i)
5731 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5732 vec_free(parser->gotos);
5733 vec_free(parser->labels);
5736 ast_expression *cexp;
5739 cexp = parse_expression_leave(parser, true, false, false);
5744 cval = (ast_value*)cexp;
5745 if (cval != parser->nil &&
5746 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5749 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5753 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5754 qualifier != CV_VAR)
5756 var->cvq = CV_CONST;
5758 if (cval == parser->nil)
5759 var->expression.flags |= AST_FLAG_INITIALIZED;
5762 var->hasvalue = true;
5763 if (cval->expression.vtype == TYPE_STRING)
5764 var->constval.vstring = parser_strdup(cval->constval.vstring);
5765 else if (cval->expression.vtype == TYPE_FIELD)
5766 var->constval.vfield = cval;
5768 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5774 shunt sy = { NULL, NULL, NULL, NULL };
5777 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5778 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5779 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5780 if (!parser_sy_apply_operator(parser, &sy))
5783 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5784 parseerror(parser, "internal error: leaked operands");
5785 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5795 if (parser->tok == ',') {
5796 if (!parser_next(parser)) {
5797 parseerror(parser, "expected another variable");
5801 if (parser->tok != TOKEN_IDENT) {
5802 parseerror(parser, "expected another variable");
5805 var = ast_value_copy(basetype);
5807 ast_value_set_name(var, parser_tokval(parser));
5808 if (!parser_next(parser)) {
5809 parseerror(parser, "error parsing variable declaration");
5815 if (parser->tok != ';') {
5816 parseerror(parser, "missing semicolon after variables");
5820 if (!parser_next(parser)) {
5821 parseerror(parser, "parse error after variable declaration");
5825 ast_delete(basetype);
5829 if (cleanvar && var)
5831 ast_delete(basetype);
5835 ast_delete(basetype);
5836 if (cleanvar && var)
5838 if (me[0]) ast_member_delete(me[0]);
5839 if (me[1]) ast_member_delete(me[1]);
5840 if (me[2]) ast_member_delete(me[2]);
5844 static bool parser_global_statement(parser_t *parser)
5848 bool is_static = false;
5849 uint32_t qflags = 0;
5850 ast_value *istype = NULL;
5851 char *vstring = NULL;
5853 if (parser->tok == TOKEN_IDENT)
5854 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5856 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5858 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5860 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5862 if (cvq == CV_WRONG)
5864 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5866 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5868 return parse_enum(parser);
5870 else if (parser->tok == TOKEN_KEYWORD)
5872 if (!strcmp(parser_tokval(parser), "typedef")) {
5873 if (!parser_next(parser)) {
5874 parseerror(parser, "expected type definition after 'typedef'");
5877 return parse_typedef(parser);
5879 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5882 else if (parser->tok == '#')
5884 return parse_pragma(parser);
5886 else if (parser->tok == '$')
5888 if (!parser_next(parser)) {
5889 parseerror(parser, "parse error");
5895 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
5901 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5903 return util_crc16(old, str, strlen(str));
5906 static void progdefs_crc_file(const char *str)
5908 /* write to progdefs.h here */
5912 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5914 old = progdefs_crc_sum(old, str);
5915 progdefs_crc_file(str);
5919 static void generate_checksum(parser_t *parser)
5921 uint16_t crc = 0xFFFF;
5925 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5926 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5928 progdefs_crc_file("\tint\tpad;\n");
5929 progdefs_crc_file("\tint\tofs_return[3];\n");
5930 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5931 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5932 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5933 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5934 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5935 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5936 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5937 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5939 for (i = 0; i < parser->crc_globals; ++i) {
5940 if (!ast_istype(parser->globals[i], ast_value))
5942 value = (ast_value*)(parser->globals[i]);
5943 switch (value->expression.vtype) {
5944 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5945 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5946 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5947 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5949 crc = progdefs_crc_both(crc, "\tint\t");
5952 crc = progdefs_crc_both(crc, value->name);
5953 crc = progdefs_crc_both(crc, ";\n");
5955 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5956 for (i = 0; i < parser->crc_fields; ++i) {
5957 if (!ast_istype(parser->fields[i], ast_value))
5959 value = (ast_value*)(parser->fields[i]);
5960 switch (value->expression.next->expression.vtype) {
5961 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5962 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5963 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5964 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5966 crc = progdefs_crc_both(crc, "\tint\t");
5969 crc = progdefs_crc_both(crc, value->name);
5970 crc = progdefs_crc_both(crc, ";\n");
5972 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5977 static parser_t *parser;
5984 parser = (parser_t*)mem_a(sizeof(parser_t));
5988 memset(parser, 0, sizeof(*parser));
5990 for (i = 0; i < operator_count; ++i) {
5991 if (operators[i].id == opid1('=')) {
5992 parser->assign_op = operators+i;
5996 if (!parser->assign_op) {
5997 printf("internal error: initializing parser: failed to find assign operator\n");
6002 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
6003 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
6004 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
6005 vec_push(parser->_blocktypedefs, 0);
6007 parser->aliases = util_htnew(PARSER_HT_SIZE);
6010 vec_push(parser->correct_variables, correct_trie_new());
6011 vec_push(parser->correct_variables_score, NULL);
6013 empty_ctx.file = "<internal>";
6015 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
6016 parser->nil->cvq = CV_CONST;
6017 if (OPTS_FLAG(UNTYPED_NIL))
6018 util_htset(parser->htglobals, "nil", (void*)parser->nil);
6020 parser->max_param_count = 1;
6022 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
6023 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
6024 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
6026 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
6027 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
6028 parser->reserved_version->cvq = CV_CONST;
6029 parser->reserved_version->hasvalue = true;
6030 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
6031 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
6033 parser->reserved_version = NULL;
6038 bool parser_compile()
6040 /* initial lexer/parser state */
6041 parser->lex->flags.noops = true;
6043 if (parser_next(parser))
6045 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
6047 if (!parser_global_statement(parser)) {
6048 if (parser->tok == TOKEN_EOF)
6049 parseerror(parser, "unexpected eof");
6050 else if (compile_errors)
6051 parseerror(parser, "there have been errors, bailing out");
6052 lex_close(parser->lex);
6058 parseerror(parser, "parse error");
6059 lex_close(parser->lex);
6064 lex_close(parser->lex);
6067 return !compile_errors;
6070 bool parser_compile_file(const char *filename)
6072 parser->lex = lex_open(filename);
6074 con_err("failed to open file \"%s\"\n", filename);
6077 return parser_compile();
6080 bool parser_compile_string(const char *name, const char *str, size_t len)
6082 parser->lex = lex_open_string(str, len, name);
6084 con_err("failed to create lexer for string \"%s\"\n", name);
6087 return parser_compile();
6090 void parser_cleanup()
6093 for (i = 0; i < vec_size(parser->accessors); ++i) {
6094 ast_delete(parser->accessors[i]->constval.vfunc);
6095 parser->accessors[i]->constval.vfunc = NULL;
6096 ast_delete(parser->accessors[i]);
6098 for (i = 0; i < vec_size(parser->functions); ++i) {
6099 ast_delete(parser->functions[i]);
6101 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6102 ast_delete(parser->imm_vector[i]);
6104 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6105 ast_delete(parser->imm_string[i]);
6107 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6108 ast_delete(parser->imm_float[i]);
6110 for (i = 0; i < vec_size(parser->fields); ++i) {
6111 ast_delete(parser->fields[i]);
6113 for (i = 0; i < vec_size(parser->globals); ++i) {
6114 ast_delete(parser->globals[i]);
6116 vec_free(parser->accessors);
6117 vec_free(parser->functions);
6118 vec_free(parser->imm_vector);
6119 vec_free(parser->imm_string);
6120 vec_free(parser->imm_float);
6121 vec_free(parser->globals);
6122 vec_free(parser->fields);
6124 for (i = 0; i < vec_size(parser->variables); ++i)
6125 util_htdel(parser->variables[i]);
6126 vec_free(parser->variables);
6127 vec_free(parser->_blocklocals);
6128 vec_free(parser->_locals);
6131 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
6132 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
6134 vec_free(parser->correct_variables);
6135 vec_free(parser->correct_variables_score);
6138 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6139 ast_delete(parser->_typedefs[i]);
6140 vec_free(parser->_typedefs);
6141 for (i = 0; i < vec_size(parser->typedefs); ++i)
6142 util_htdel(parser->typedefs[i]);
6143 vec_free(parser->typedefs);
6144 vec_free(parser->_blocktypedefs);
6146 vec_free(parser->_block_ctx);
6148 vec_free(parser->labels);
6149 vec_free(parser->gotos);
6150 vec_free(parser->breaks);
6151 vec_free(parser->continues);
6153 ast_value_delete(parser->nil);
6155 ast_value_delete(parser->const_vec[0]);
6156 ast_value_delete(parser->const_vec[1]);
6157 ast_value_delete(parser->const_vec[2]);
6159 util_htdel(parser->aliases);
6164 bool parser_finish(const char *output)
6170 if (compile_errors) {
6171 con_out("*** there were compile errors\n");
6175 ir = ir_builder_new("gmqcc_out");
6177 con_out("failed to allocate builder\n");
6181 for (i = 0; i < vec_size(parser->fields); ++i) {
6184 if (!ast_istype(parser->fields[i], ast_value))
6186 field = (ast_value*)parser->fields[i];
6187 hasvalue = field->hasvalue;
6188 field->hasvalue = false;
6189 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6190 con_out("failed to generate field %s\n", field->name);
6191 ir_builder_delete(ir);
6196 ast_expression *subtype;
6197 field->hasvalue = true;
6198 subtype = field->expression.next;
6199 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
6200 if (subtype->expression.vtype == TYPE_FIELD)
6201 ifld->fieldtype = subtype->expression.next->expression.vtype;
6202 else if (subtype->expression.vtype == TYPE_FUNCTION)
6203 ifld->outtype = subtype->expression.next->expression.vtype;
6204 (void)!ir_value_set_field(field->ir_v, ifld);
6207 for (i = 0; i < vec_size(parser->globals); ++i) {
6209 if (!ast_istype(parser->globals[i], ast_value))
6211 asvalue = (ast_value*)(parser->globals[i]);
6212 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6213 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6214 "unused global: `%s`", asvalue->name);
6216 if (!ast_global_codegen(asvalue, ir, false)) {
6217 con_out("failed to generate global %s\n", asvalue->name);
6218 ir_builder_delete(ir);
6222 /* Build function vararg accessor ast tree now before generating
6223 * immediates, because the accessors may add new immediates
6225 for (i = 0; i < vec_size(parser->functions); ++i) {
6226 ast_function *f = parser->functions[i];
6228 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6229 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6230 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6231 con_out("failed to generate vararg setter for %s\n", f->name);
6232 ir_builder_delete(ir);
6235 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6236 con_out("failed to generate vararg getter for %s\n", f->name);
6237 ir_builder_delete(ir);
6241 ast_delete(f->varargs);
6246 /* Now we can generate immediates */
6247 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6248 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
6249 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
6250 ir_builder_delete(ir);
6254 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6255 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
6256 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
6257 ir_builder_delete(ir);
6261 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6262 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
6263 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
6264 ir_builder_delete(ir);
6268 for (i = 0; i < vec_size(parser->globals); ++i) {
6270 if (!ast_istype(parser->globals[i], ast_value))
6272 asvalue = (ast_value*)(parser->globals[i]);
6273 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6275 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6276 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6277 "uninitialized constant: `%s`",
6279 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6280 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6281 "uninitialized global: `%s`",
6284 if (!ast_generate_accessors(asvalue, ir)) {
6285 ir_builder_delete(ir);
6289 for (i = 0; i < vec_size(parser->fields); ++i) {
6291 asvalue = (ast_value*)(parser->fields[i]->expression.next);
6293 if (!ast_istype((ast_expression*)asvalue, ast_value))
6295 if (asvalue->expression.vtype != TYPE_ARRAY)
6297 if (!ast_generate_accessors(asvalue, ir)) {
6298 ir_builder_delete(ir);
6302 if (parser->reserved_version &&
6303 !ast_global_codegen(parser->reserved_version, ir, false))
6305 con_out("failed to generate reserved::version");
6306 ir_builder_delete(ir);
6309 for (i = 0; i < vec_size(parser->functions); ++i) {
6310 ast_function *f = parser->functions[i];
6311 if (!ast_function_codegen(f, ir)) {
6312 con_out("failed to generate function %s\n", f->name);
6313 ir_builder_delete(ir);
6317 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6318 ir_builder_dump(ir, con_out);
6319 for (i = 0; i < vec_size(parser->functions); ++i) {
6320 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6321 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6322 ir_builder_delete(ir);
6327 if (compile_Werrors) {
6328 con_out("*** there were warnings treated as errors\n");
6329 compile_show_werrors();
6334 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6335 ir_builder_dump(ir, con_out);
6337 generate_checksum(parser);
6339 if (!ir_builder_generate(ir, output)) {
6340 con_out("*** failed to generate output file\n");
6341 ir_builder_delete(ir);
6346 ir_builder_delete(ir);