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 *);
124 static ast_expression *parser_builtin_exp(parser_t *);
126 static void parseerror(parser_t *parser, const char *fmt, ...)
130 vcompile_error(parser->lex->tok.ctx, fmt, ap);
134 /* returns true if it counts as an error */
135 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
140 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
145 /**********************************************************************
146 * some maths used for constant folding
149 vector vec3_add(vector a, vector b)
158 vector vec3_sub(vector a, vector b)
167 qcfloat vec3_mulvv(vector a, vector b)
169 return (a.x * b.x + a.y * b.y + a.z * b.z);
172 vector vec3_mulvf(vector a, float b)
181 /**********************************************************************
185 bool parser_next(parser_t *parser)
187 /* lex_do kills the previous token */
188 parser->tok = lex_do(parser->lex);
189 if (parser->tok == TOKEN_EOF)
191 if (parser->tok >= TOKEN_ERROR) {
192 parseerror(parser, "lex error");
198 #define parser_tokval(p) ((p)->lex->tok.value)
199 #define parser_token(p) (&((p)->lex->tok))
200 #define parser_ctx(p) ((p)->lex->tok.ctx)
202 static ast_value* parser_const_float(parser_t *parser, double d)
207 for (i = 0; i < vec_size(parser->imm_float); ++i) {
208 const double compare = parser->imm_float[i]->constval.vfloat;
209 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
210 return parser->imm_float[i];
213 ctx = parser_ctx(parser);
215 memset(&ctx, 0, sizeof(ctx));
217 out = ast_value_new(ctx, "#IMMEDIATE", TYPE_FLOAT);
219 out->hasvalue = true;
220 out->constval.vfloat = d;
221 vec_push(parser->imm_float, out);
225 static ast_value* parser_const_float_0(parser_t *parser)
227 if (!parser->imm_float_zero)
228 parser->imm_float_zero = parser_const_float(parser, 0);
229 return parser->imm_float_zero;
232 static ast_value* parser_const_float_neg1(parser_t *parser) {
233 if (!parser->imm_float_neg_one)
234 parser->imm_float_neg_one = parser_const_float(parser, -1);
235 return parser->imm_float_neg_one;
238 static ast_value* parser_const_float_1(parser_t *parser)
240 if (!parser->imm_float_one)
241 parser->imm_float_one = parser_const_float(parser, 1);
242 return parser->imm_float_one;
245 static char *parser_strdup(const char *str)
248 /* actually dup empty strings */
249 char *out = (char*)mem_a(1);
253 return util_strdup(str);
256 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
260 for (i = 0; i < vec_size(parser->imm_string); ++i) {
261 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
262 return parser->imm_string[i];
266 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
267 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
269 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
271 out->hasvalue = true;
272 out->constval.vstring = parser_strdup(str);
273 vec_push(parser->imm_string, out);
277 static ast_value* parser_const_vector(parser_t *parser, vector v)
281 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
282 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
283 return parser->imm_vector[i];
285 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
287 out->hasvalue = true;
288 out->constval.vvec = v;
289 vec_push(parser->imm_vector, out);
293 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
299 return parser_const_vector(parser, v);
302 static ast_value* parser_const_vector_0(parser_t *parser)
304 if (!parser->imm_vector_zero)
305 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
306 return parser->imm_vector_zero;
309 static ast_expression* parser_find_field(parser_t *parser, const char *name)
311 return ( ast_expression*)util_htget(parser->htfields, name);
314 static ast_expression* parser_find_label(parser_t *parser, const char *name)
317 for(i = 0; i < vec_size(parser->labels); i++)
318 if (!strcmp(parser->labels[i]->name, name))
319 return (ast_expression*)parser->labels[i];
323 static ast_expression* parser_find_global(parser_t *parser, const char *name)
325 ast_expression *var = (ast_expression*)util_htget(parser->aliases, parser_tokval(parser));
328 return (ast_expression*)util_htget(parser->htglobals, name);
331 static ast_expression* parser_find_param(parser_t *parser, const char *name)
335 if (!parser->function)
337 fun = parser->function->vtype;
338 for (i = 0; i < vec_size(fun->expression.params); ++i) {
339 if (!strcmp(fun->expression.params[i]->name, name))
340 return (ast_expression*)(fun->expression.params[i]);
345 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
350 hash = util_hthash(parser->htglobals, name);
353 for (i = vec_size(parser->variables); i > upto;) {
355 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
359 return parser_find_param(parser, name);
362 static ast_expression* parser_find_var(parser_t *parser, const char *name)
366 v = parser_find_local(parser, name, 0, &dummy);
367 if (!v) v = parser_find_global(parser, name);
371 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
375 hash = util_hthash(parser->typedefs[0], name);
377 for (i = vec_size(parser->typedefs); i > upto;) {
379 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
387 size_t etype; /* 0 = expression, others are operators */
391 ast_block *block; /* for commas and function calls */
410 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
421 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
425 e.out = (ast_expression*)v;
432 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
434 e.etype = 1 + (op - operators);
443 static sy_elem syparen(lex_ctx ctx, size_t off) {
454 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
455 * so we need to rotate it to become ent.(foo[n]).
457 static bool rotate_entfield_array_index_nodes(ast_expression **out)
459 ast_array_index *index, *oldindex;
460 ast_entfield *entfield;
464 ast_expression *entity;
466 lex_ctx ctx = ast_ctx(*out);
468 if (!ast_istype(*out, ast_array_index))
470 index = (ast_array_index*)*out;
472 if (!ast_istype(index->array, ast_entfield))
474 entfield = (ast_entfield*)index->array;
476 if (!ast_istype(entfield->field, ast_value))
478 field = (ast_value*)entfield->field;
481 entity = entfield->entity;
485 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
486 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
487 *out = (ast_expression*)entfield;
489 oldindex->array = NULL;
490 oldindex->index = NULL;
491 ast_delete(oldindex);
496 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
498 switch (v->expression.vtype) {
500 return !!v->constval.vfloat;
502 return !!v->constval.vint;
504 if (OPTS_FLAG(CORRECT_LOGIC))
505 return v->constval.vvec.x &&
506 v->constval.vvec.y &&
509 return !!(v->constval.vvec.x);
511 if (!v->constval.vstring)
513 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
515 return !!v->constval.vstring[0];
517 compile_error(ctx, "internal error: immediate_is_true on invalid type");
518 return !!v->constval.vfunc;
522 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
526 ast_expression *out = NULL;
527 ast_expression *exprs[3];
528 ast_block *blocks[3];
529 ast_value *asvalue[3];
530 ast_binstore *asbinstore;
531 size_t i, assignop, addop, subop;
532 qcint generated_op = 0;
537 if (!vec_size(sy->ops)) {
538 parseerror(parser, "internal error: missing operator");
542 if (vec_last(sy->ops).isparen) {
543 parseerror(parser, "unmatched parenthesis");
547 op = &operators[vec_last(sy->ops).etype - 1];
548 ctx = vec_last(sy->ops).ctx;
550 if (vec_size(sy->out) < op->operands) {
551 compile_error(ctx, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
552 op->op, (int)op->id);
556 vec_shrinkby(sy->ops, 1);
558 /* op(:?) has no input and no output */
562 vec_shrinkby(sy->out, op->operands);
563 for (i = 0; i < op->operands; ++i) {
564 exprs[i] = sy->out[vec_size(sy->out)+i].out;
565 blocks[i] = sy->out[vec_size(sy->out)+i].block;
566 asvalue[i] = (ast_value*)exprs[i];
568 if (exprs[i]->expression.vtype == TYPE_NOEXPR &&
569 !(i != 0 && op->id == opid2('?',':')) &&
570 !(i == 1 && op->id == opid1('.')))
572 if (ast_istype(exprs[i], ast_label))
573 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
575 compile_error(ast_ctx(exprs[i]), "not an expression");
576 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
580 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
581 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
585 #define NotSameType(T) \
586 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
587 exprs[0]->expression.vtype != T)
588 #define CanConstFold1(A) \
589 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
590 (A)->expression.vtype != TYPE_FUNCTION)
591 #define CanConstFold(A, B) \
592 (CanConstFold1(A) && CanConstFold1(B))
593 #define ConstV(i) (asvalue[(i)]->constval.vvec)
594 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
595 #define ConstS(i) (asvalue[(i)]->constval.vstring)
599 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
603 if (exprs[0]->expression.vtype == TYPE_VECTOR &&
604 exprs[1]->expression.vtype == TYPE_NOEXPR)
606 if (exprs[1] == (ast_expression*)parser->const_vec[0])
607 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
608 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
609 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
610 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
611 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
613 compile_error(ctx, "access to invalid vector component");
617 else if (exprs[0]->expression.vtype == TYPE_ENTITY) {
618 if (exprs[1]->expression.vtype != TYPE_FIELD) {
619 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
622 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
624 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
625 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
629 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
635 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
636 !(exprs[0]->expression.vtype == TYPE_FIELD &&
637 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
639 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
640 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
643 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
644 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
645 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
648 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
649 if (rotate_entfield_array_index_nodes(&out))
652 /* This is not broken in fteqcc anymore */
653 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
654 /* this error doesn't need to make us bail out */
655 (void)!parsewarning(parser, WARN_EXTENSIONS,
656 "accessing array-field members of an entity without parenthesis\n"
657 " -> this is an extension from -std=gmqcc");
664 if (vec_size(sy->paren) && vec_last(sy->paren) == PAREN_FUNC) {
665 vec_push(sy->out, syexp(ctx, exprs[0]));
666 vec_push(sy->out, syexp(ctx, exprs[1]));
667 vec_last(sy->argc)++;
671 if (!ast_block_add_expr(blocks[0], exprs[1]))
674 blocks[0] = ast_block_new(ctx);
675 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
676 !ast_block_add_expr(blocks[0], exprs[1]))
681 ast_block_set_type(blocks[0], exprs[1]);
683 vec_push(sy->out, syblock(ctx, blocks[0]));
690 switch (exprs[0]->expression.vtype) {
692 if (CanConstFold1(exprs[0]))
693 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
695 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
696 (ast_expression*)parser_const_float_0(parser),
700 if (CanConstFold1(exprs[0]))
701 out = (ast_expression*)parser_const_vector_f(parser,
702 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
704 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
705 (ast_expression*)parser_const_vector_0(parser),
709 compile_error(ctx, "invalid types used in expression: cannot negate type %s",
710 type_name[exprs[0]->expression.vtype]);
716 switch (exprs[0]->expression.vtype) {
718 if (CanConstFold1(exprs[0]))
719 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
721 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
724 if (CanConstFold1(exprs[0]))
725 out = (ast_expression*)parser_const_float(parser,
726 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
728 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
731 if (CanConstFold1(exprs[0])) {
732 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
733 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
735 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
737 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
738 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
740 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
743 /* we don't constant-fold NOT for these types */
745 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
748 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
751 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
752 type_name[exprs[0]->expression.vtype]);
758 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
759 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
761 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
762 type_name[exprs[0]->expression.vtype],
763 type_name[exprs[1]->expression.vtype]);
766 switch (exprs[0]->expression.vtype) {
768 if (CanConstFold(exprs[0], exprs[1]))
770 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
773 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
776 if (CanConstFold(exprs[0], exprs[1]))
777 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
779 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
782 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
783 type_name[exprs[0]->expression.vtype],
784 type_name[exprs[1]->expression.vtype]);
789 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
790 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
792 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
793 type_name[exprs[1]->expression.vtype],
794 type_name[exprs[0]->expression.vtype]);
797 switch (exprs[0]->expression.vtype) {
799 if (CanConstFold(exprs[0], exprs[1]))
800 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
802 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
805 if (CanConstFold(exprs[0], exprs[1]))
806 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
808 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
811 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
812 type_name[exprs[1]->expression.vtype],
813 type_name[exprs[0]->expression.vtype]);
818 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
819 !(exprs[0]->expression.vtype == TYPE_VECTOR &&
820 exprs[1]->expression.vtype == TYPE_FLOAT) &&
821 !(exprs[1]->expression.vtype == TYPE_VECTOR &&
822 exprs[0]->expression.vtype == TYPE_FLOAT)
825 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
826 type_name[exprs[1]->expression.vtype],
827 type_name[exprs[0]->expression.vtype]);
830 switch (exprs[0]->expression.vtype) {
832 if (exprs[1]->expression.vtype == TYPE_VECTOR)
834 if (CanConstFold(exprs[0], exprs[1]))
835 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
837 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
841 if (CanConstFold(exprs[0], exprs[1]))
842 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
844 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
848 if (exprs[1]->expression.vtype == TYPE_FLOAT)
850 if (CanConstFold(exprs[0], exprs[1]))
851 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
853 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
857 if (CanConstFold(exprs[0], exprs[1]))
858 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
859 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[0])) {
860 vector vec = ConstV(0);
861 if (!vec.y && !vec.z) { /* 'n 0 0' * v */
862 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
863 out = (ast_expression*)ast_member_new(ctx, exprs[1], 0, NULL);
864 out->expression.node.keep = false;
865 ((ast_member*)out)->rvalue = true;
867 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.x), out);
869 else if (!vec.x && !vec.z) { /* '0 n 0' * v */
870 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
871 out = (ast_expression*)ast_member_new(ctx, exprs[1], 1, NULL);
872 out->expression.node.keep = false;
873 ((ast_member*)out)->rvalue = true;
875 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.y), out);
877 else if (!vec.x && !vec.y) { /* '0 n 0' * v */
878 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
879 out = (ast_expression*)ast_member_new(ctx, exprs[1], 2, NULL);
880 out->expression.node.keep = false;
881 ((ast_member*)out)->rvalue = true;
883 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.z), out);
886 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
888 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[1])) {
889 vector vec = ConstV(1);
890 if (!vec.y && !vec.z) { /* v * 'n 0 0' */
891 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
892 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
893 out->expression.node.keep = false;
894 ((ast_member*)out)->rvalue = true;
896 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.x));
898 else if (!vec.x && !vec.z) { /* v * '0 n 0' */
899 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
900 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
901 out->expression.node.keep = false;
902 ((ast_member*)out)->rvalue = true;
904 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.y));
906 else if (!vec.x && !vec.y) { /* v * '0 n 0' */
907 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
908 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
909 out->expression.node.keep = false;
910 ((ast_member*)out)->rvalue = true;
912 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.z));
915 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
918 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
922 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
923 type_name[exprs[1]->expression.vtype],
924 type_name[exprs[0]->expression.vtype]);
929 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
930 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
931 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
932 compile_error(ctx, "invalid types used in expression: cannot divide tyeps %s and %s", ty1, ty2);
935 if (exprs[0]->expression.vtype == TYPE_FLOAT) {
936 if (CanConstFold(exprs[0], exprs[1]))
937 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
939 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
941 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
942 if (CanConstFold(exprs[0], exprs[1]))
943 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), 1.0/ConstF(1)));
945 if (CanConstFold1(exprs[1])) {
946 out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
948 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
949 (ast_expression*)parser_const_float_1(parser),
953 compile_error(ctx, "internal error: failed to generate division");
956 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], out);
961 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
962 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
963 compile_error(ctx, "invalid types used in expression: cannot divide tyeps %s and %s", ty1, ty2);
969 compile_error(ctx, "qc does not have a modulo operator");
973 if (NotSameType(TYPE_FLOAT)) {
974 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
975 type_name[exprs[0]->expression.vtype],
976 type_name[exprs[1]->expression.vtype]);
979 if (CanConstFold(exprs[0], exprs[1]))
980 out = (ast_expression*)parser_const_float(parser,
981 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
982 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
984 out = (ast_expression*)ast_binary_new(ctx,
985 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
989 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor via ^");
994 if (CanConstFold(exprs[0], exprs[1]) && ! NotSameType(TYPE_FLOAT)) {
995 if (op->id == opid2('<','<'))
996 out = (ast_expression*)parser_const_float(parser, (double)((int)(ConstF(0)) << (int)(ConstF(1))));
998 out = (ast_expression*)parser_const_float(parser, (double)((int)(ConstF(0)) >> (int)(ConstF(1))));
1001 case opid3('<','<','='):
1002 case opid3('>','>','='):
1003 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
1006 case opid2('|','|'):
1007 generated_op += 1; /* INSTR_OR */
1008 case opid2('&','&'):
1009 generated_op += INSTR_AND;
1010 if (CanConstFold(exprs[0], exprs[1]))
1012 if (OPTS_FLAG(PERL_LOGIC)) {
1013 if (immediate_is_true(ctx, asvalue[0]))
1017 out = (ast_expression*)parser_const_float(parser,
1018 ( (generated_op == INSTR_OR)
1019 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
1020 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
1025 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
1026 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1027 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1028 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
1031 for (i = 0; i < 2; ++i) {
1032 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->expression.vtype == TYPE_VECTOR) {
1033 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
1035 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1037 exprs[i] = out; out = NULL;
1038 if (OPTS_FLAG(PERL_LOGIC)) {
1039 /* here we want to keep the right expressions' type */
1043 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->expression.vtype == TYPE_STRING) {
1044 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
1046 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1048 exprs[i] = out; out = NULL;
1049 if (OPTS_FLAG(PERL_LOGIC)) {
1050 /* here we want to keep the right expressions' type */
1055 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1059 case opid2('?',':'):
1060 if (vec_last(sy->paren) != PAREN_TERNARY2) {
1061 compile_error(ctx, "mismatched parenthesis/ternary");
1065 if (!ast_compare_type(exprs[1], exprs[2])) {
1066 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
1067 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
1068 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
1071 if (CanConstFold1(exprs[0]))
1072 out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
1074 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
1077 case opid2('*', '*'):
1078 if (NotSameType(TYPE_FLOAT)) {
1079 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1080 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1081 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
1087 if (CanConstFold(exprs[0], exprs[1])) {
1088 out = (ast_expression*)parser_const_float(parser, powf(ConstF(0), ConstF(1)));
1090 ast_call *gencall = ast_call_new(parser_ctx(parser), parser_builtin_pow(parser));
1091 vec_push(gencall->params, exprs[0]);
1092 vec_push(gencall->params, exprs[1]);
1093 out = (ast_expression*)gencall;
1097 case opid3('<','=','>'): /* -1, 0, or 1 */
1098 if (NotSameType(TYPE_FLOAT)) {
1099 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1100 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1101 compile_error(ctx, "invalid types used in comparision: %s and %s",
1107 if (CanConstFold(exprs[0], exprs[1])) {
1108 if (ConstF(0) < ConstF(1))
1109 out = (ast_expression*)parser_const_float_neg1(parser);
1110 else if (ConstF(0) == ConstF(1))
1111 out = (ast_expression*)parser_const_float_0(parser);
1112 else if (ConstF(0) > ConstF(1))
1113 out = (ast_expression*)parser_const_float_1(parser);
1115 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
1117 eq->refs = (ast_binary_ref)false; /* references nothing */
1120 out = (ast_expression*)ast_ternary_new(ctx,
1121 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
1123 (ast_expression*)parser_const_float_neg1(parser),
1126 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
1128 (ast_expression*)parser_const_float_0(parser),
1131 (ast_expression*)parser_const_float_1(parser)
1141 generated_op += 1; /* INSTR_GT */
1143 generated_op += 1; /* INSTR_LT */
1144 case opid2('>', '='):
1145 generated_op += 1; /* INSTR_GE */
1146 case opid2('<', '='):
1147 generated_op += INSTR_LE;
1148 if (NotSameType(TYPE_FLOAT)) {
1149 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1150 type_name[exprs[0]->expression.vtype],
1151 type_name[exprs[1]->expression.vtype]);
1154 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1156 case opid2('!', '='):
1157 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1158 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1159 type_name[exprs[0]->expression.vtype],
1160 type_name[exprs[1]->expression.vtype]);
1163 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1165 case opid2('=', '='):
1166 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1167 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1168 type_name[exprs[0]->expression.vtype],
1169 type_name[exprs[1]->expression.vtype]);
1172 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1176 if (ast_istype(exprs[0], ast_entfield)) {
1177 ast_expression *field = ((ast_entfield*)exprs[0])->field;
1178 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1179 exprs[0]->expression.vtype == TYPE_FIELD &&
1180 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1182 assignop = type_storep_instr[TYPE_VECTOR];
1185 assignop = type_storep_instr[exprs[0]->expression.vtype];
1186 if (assignop == VINSTR_END || !ast_compare_type(field->expression.next, exprs[1]))
1188 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
1189 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1190 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1191 field->expression.next->expression.vtype == TYPE_FUNCTION &&
1192 exprs[1]->expression.vtype == TYPE_FUNCTION)
1194 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1195 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1198 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1203 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1204 exprs[0]->expression.vtype == TYPE_FIELD &&
1205 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1207 assignop = type_store_instr[TYPE_VECTOR];
1210 assignop = type_store_instr[exprs[0]->expression.vtype];
1213 if (assignop == VINSTR_END) {
1214 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1215 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1216 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1218 else if (!ast_compare_type(exprs[0], exprs[1]))
1220 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1221 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1222 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1223 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1224 exprs[1]->expression.vtype == TYPE_FUNCTION)
1226 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1227 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1230 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1233 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1234 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1236 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1238 case opid3('+','+','P'):
1239 case opid3('-','-','P'):
1241 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1242 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1243 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
1246 if (op->id == opid3('+','+','P'))
1247 addop = INSTR_ADD_F;
1249 addop = INSTR_SUB_F;
1250 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1251 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1253 if (ast_istype(exprs[0], ast_entfield)) {
1254 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1256 (ast_expression*)parser_const_float_1(parser));
1258 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1260 (ast_expression*)parser_const_float_1(parser));
1263 case opid3('S','+','+'):
1264 case opid3('S','-','-'):
1266 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1267 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1268 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
1271 if (op->id == opid3('S','+','+')) {
1272 addop = INSTR_ADD_F;
1273 subop = INSTR_SUB_F;
1275 addop = INSTR_SUB_F;
1276 subop = INSTR_ADD_F;
1278 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1279 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1281 if (ast_istype(exprs[0], ast_entfield)) {
1282 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1284 (ast_expression*)parser_const_float_1(parser));
1286 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1288 (ast_expression*)parser_const_float_1(parser));
1292 out = (ast_expression*)ast_binary_new(ctx, subop,
1294 (ast_expression*)parser_const_float_1(parser));
1296 case opid2('+','='):
1297 case opid2('-','='):
1298 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1299 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1301 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1302 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1303 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1307 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1308 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1310 if (ast_istype(exprs[0], ast_entfield))
1311 assignop = type_storep_instr[exprs[0]->expression.vtype];
1313 assignop = type_store_instr[exprs[0]->expression.vtype];
1314 switch (exprs[0]->expression.vtype) {
1316 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1317 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1318 exprs[0], exprs[1]);
1321 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1322 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1323 exprs[0], exprs[1]);
1326 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1327 type_name[exprs[0]->expression.vtype],
1328 type_name[exprs[1]->expression.vtype]);
1332 case opid2('*','='):
1333 case opid2('/','='):
1334 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1335 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1336 exprs[0]->expression.vtype == TYPE_VECTOR))
1338 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1339 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1340 compile_error(ctx, "invalid types used in expression: %s and %s",
1344 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1345 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1347 if (ast_istype(exprs[0], ast_entfield))
1348 assignop = type_storep_instr[exprs[0]->expression.vtype];
1350 assignop = type_store_instr[exprs[0]->expression.vtype];
1351 switch (exprs[0]->expression.vtype) {
1353 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1354 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1355 exprs[0], exprs[1]);
1358 if (op->id == opid2('*','=')) {
1359 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1360 exprs[0], exprs[1]);
1362 /* there's no DIV_VF */
1363 if (CanConstFold1(exprs[1])) {
1364 out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
1366 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1367 (ast_expression*)parser_const_float_1(parser),
1371 compile_error(ctx, "internal error: failed to generate division");
1374 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1379 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1380 type_name[exprs[0]->expression.vtype],
1381 type_name[exprs[1]->expression.vtype]);
1385 case opid2('&','='):
1386 case opid2('|','='):
1387 if (NotSameType(TYPE_FLOAT)) {
1388 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1389 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1390 compile_error(ctx, "invalid types used in expression: %s and %s",
1394 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1395 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1397 if (ast_istype(exprs[0], ast_entfield))
1398 assignop = type_storep_instr[exprs[0]->expression.vtype];
1400 assignop = type_store_instr[exprs[0]->expression.vtype];
1401 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1402 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1403 exprs[0], exprs[1]);
1405 case opid3('&','~','='):
1406 /* This is like: a &= ~(b);
1407 * But QC has no bitwise-not, so we implement it as
1410 if (NotSameType(TYPE_FLOAT)) {
1411 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1412 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1413 compile_error(ctx, "invalid types used in expression: %s and %s",
1417 if (ast_istype(exprs[0], ast_entfield))
1418 assignop = type_storep_instr[exprs[0]->expression.vtype];
1420 assignop = type_store_instr[exprs[0]->expression.vtype];
1421 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1424 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1425 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1427 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1428 asbinstore->keep_dest = true;
1429 out = (ast_expression*)asbinstore;
1432 case opid2('~', 'P'):
1433 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1434 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1435 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1439 if(CanConstFold1(exprs[0]))
1440 out = (ast_expression*)parser_const_float(parser, ~(qcint)ConstF(0));
1442 out = (ast_expression*)
1443 ast_binary_new(ctx, INSTR_SUB_F, (ast_expression*)parser_const_float_neg1(parser), exprs[0]);
1449 compile_error(ctx, "failed to apply operator %s", op->op);
1453 vec_push(sy->out, syexp(ctx, out));
1457 static bool parser_close_call(parser_t *parser, shunt *sy)
1459 /* was a function call */
1460 ast_expression *fun;
1461 ast_value *funval = NULL;
1465 size_t paramcount, i;
1467 fid = vec_last(sy->ops).off;
1468 vec_shrinkby(sy->ops, 1);
1470 /* out[fid] is the function
1471 * everything above is parameters...
1473 if (!vec_size(sy->argc)) {
1474 parseerror(parser, "internal error: no argument counter available");
1478 paramcount = vec_last(sy->argc);
1481 if (vec_size(sy->out) < fid) {
1482 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1483 (unsigned long)vec_size(sy->out),
1485 (unsigned long)paramcount);
1489 fun = sy->out[fid].out;
1491 if (fun == intrinsic_debug_typestring) {
1493 if (fid+2 != vec_size(sy->out) ||
1494 vec_last(sy->out).block)
1496 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1499 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1500 ast_unref(vec_last(sy->out).out);
1501 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1502 (ast_expression*)parser_const_string(parser, ty, false));
1503 vec_shrinkby(sy->out, 1);
1507 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1511 if (fid+1 < vec_size(sy->out))
1514 if (fid+1 + paramcount != vec_size(sy->out)) {
1515 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1516 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1520 for (i = 0; i < paramcount; ++i)
1521 vec_push(call->params, sy->out[fid+1 + i].out);
1522 vec_shrinkby(sy->out, paramcount);
1523 (void)!ast_call_check_types(call);
1524 if (parser->max_param_count < paramcount)
1525 parser->max_param_count = paramcount;
1527 if (ast_istype(fun, ast_value)) {
1528 funval = (ast_value*)fun;
1529 if ((fun->expression.flags & AST_FLAG_VARIADIC) &&
1530 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1532 call->va_count = (ast_expression*)parser_const_float(parser, (double)paramcount);
1536 /* overwrite fid, the function, with a call */
1537 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1539 if (fun->expression.vtype != TYPE_FUNCTION) {
1540 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1544 if (!fun->expression.next) {
1545 parseerror(parser, "could not determine function return type");
1548 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1550 if (fun->expression.flags & AST_FLAG_DEPRECATED) {
1552 return !parsewarning(parser, WARN_DEPRECATED,
1553 "call to function (which is marked deprecated)\n",
1554 "-> it has been declared here: %s:%i",
1555 ast_ctx(fun).file, ast_ctx(fun).line);
1558 return !parsewarning(parser, WARN_DEPRECATED,
1559 "call to `%s` (which is marked deprecated)\n"
1560 "-> `%s` declared here: %s:%i",
1561 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1563 return !parsewarning(parser, WARN_DEPRECATED,
1564 "call to `%s` (deprecated: %s)\n"
1565 "-> `%s` declared here: %s:%i",
1566 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1570 if (vec_size(fun->expression.params) != paramcount &&
1571 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1572 vec_size(fun->expression.params) < paramcount))
1574 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1576 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1577 "too %s parameters for call to %s: expected %i, got %i\n"
1578 " -> `%s` has been declared here: %s:%i",
1579 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1580 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1582 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1583 "too %s parameters for function call: expected %i, got %i\n"
1584 " -> it has been declared here: %s:%i",
1585 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1586 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1593 static bool parser_close_paren(parser_t *parser, shunt *sy)
1595 if (!vec_size(sy->ops)) {
1596 parseerror(parser, "unmatched closing paren");
1600 while (vec_size(sy->ops)) {
1601 if (vec_last(sy->ops).isparen) {
1602 if (vec_last(sy->paren) == PAREN_FUNC) {
1604 if (!parser_close_call(parser, sy))
1608 if (vec_last(sy->paren) == PAREN_EXPR) {
1610 if (!vec_size(sy->out)) {
1611 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1612 vec_shrinkby(sy->ops, 1);
1615 vec_shrinkby(sy->ops, 1);
1618 if (vec_last(sy->paren) == PAREN_INDEX) {
1620 /* pop off the parenthesis */
1621 vec_shrinkby(sy->ops, 1);
1622 /* then apply the index operator */
1623 if (!parser_sy_apply_operator(parser, sy))
1627 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1628 vec_last(sy->paren) = PAREN_TERNARY2;
1629 /* pop off the parenthesis */
1630 vec_shrinkby(sy->ops, 1);
1633 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1636 if (!parser_sy_apply_operator(parser, sy))
1642 static void parser_reclassify_token(parser_t *parser)
1645 for (i = 0; i < operator_count; ++i) {
1646 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1647 parser->tok = TOKEN_OPERATOR;
1653 static ast_expression* parse_vararg_do(parser_t *parser)
1655 ast_expression *idx, *out;
1657 ast_value *funtype = parser->function->vtype;
1659 lex_ctx ctx = parser_ctx(parser);
1661 if (!parser_next(parser) || parser->tok != '(') {
1662 parseerror(parser, "expected parameter index and type in parenthesis");
1665 if (!parser_next(parser)) {
1666 parseerror(parser, "error parsing parameter index");
1670 idx = parse_expression_leave(parser, true, false, false);
1674 if (parser->tok != ',') {
1676 parseerror(parser, "expected comma after parameter index");
1680 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1682 parseerror(parser, "expected typename for vararg");
1686 typevar = parse_typename(parser, NULL, NULL);
1692 if (parser->tok != ')') {
1694 ast_delete(typevar);
1695 parseerror(parser, "expected closing paren");
1700 if (!parser_next(parser)) {
1702 ast_delete(typevar);
1703 parseerror(parser, "parse error after vararg");
1708 if (!parser->function->varargs) {
1710 ast_delete(typevar);
1711 parseerror(parser, "function has no variable argument list");
1715 if (funtype->expression.varparam &&
1716 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1720 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1721 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1722 compile_error(ast_ctx(typevar),
1723 "function was declared to take varargs of type `%s`, requested type is: %s",
1727 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1728 ast_type_adopt(out, typevar);
1729 ast_delete(typevar);
1733 static ast_expression* parse_vararg(parser_t *parser)
1735 bool old_noops = parser->lex->flags.noops;
1737 ast_expression *out;
1739 parser->lex->flags.noops = true;
1740 out = parse_vararg_do(parser);
1742 parser->lex->flags.noops = old_noops;
1746 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1748 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1749 parser->tok == TOKEN_IDENT &&
1750 !strcmp(parser_tokval(parser), "_"))
1752 /* a translatable string */
1755 parser->lex->flags.noops = true;
1756 if (!parser_next(parser) || parser->tok != '(') {
1757 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1760 parser->lex->flags.noops = false;
1761 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1762 parseerror(parser, "expected a constant string in translatable-string extension");
1765 val = parser_const_string(parser, parser_tokval(parser), true);
1768 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1770 if (!parser_next(parser) || parser->tok != ')') {
1771 parseerror(parser, "expected closing paren after translatable string");
1776 else if (parser->tok == TOKEN_DOTS)
1779 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1780 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1783 va = parse_vararg(parser);
1786 vec_push(sy->out, syexp(parser_ctx(parser), va));
1789 else if (parser->tok == TOKEN_FLOATCONST) {
1791 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1794 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1797 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1799 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1802 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1805 else if (parser->tok == TOKEN_STRINGCONST) {
1807 val = parser_const_string(parser, parser_tokval(parser), false);
1810 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1813 else if (parser->tok == TOKEN_VECTORCONST) {
1815 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1818 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1821 else if (parser->tok == TOKEN_IDENT)
1823 const char *ctoken = parser_tokval(parser);
1824 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1825 ast_expression *var;
1826 /* a_vector.{x,y,z} */
1827 if (!vec_size(sy->ops) ||
1828 !vec_last(sy->ops).etype ||
1829 operators[vec_last(sy->ops).etype-1].id != opid1('.') ||
1830 (prev >= intrinsic_debug_typestring &&
1831 prev <= intrinsic_debug_typestring))
1833 /* When adding more intrinsics, fix the above condition */
1836 if (prev && prev->expression.vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1838 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1840 var = parser_find_var(parser, parser_tokval(parser));
1842 var = parser_find_field(parser, parser_tokval(parser));
1844 if (!var && with_labels) {
1845 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1847 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1848 var = (ast_expression*)lbl;
1849 vec_push(parser->labels, lbl);
1854 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1855 var = (ast_expression*)intrinsic_debug_typestring;
1857 if (!strcmp(parser_tokval(parser), "__builtin_pow"))
1858 var = parser_builtin_pow(parser);
1859 if (!strcmp(parser_tokval(parser), "__builtin_exp"))
1860 var = parser_builtin_exp(parser);
1863 char *correct = NULL;
1867 * sometimes people use preprocessing predefs without enabling them
1868 * i've done this thousands of times already myself. Lets check for
1869 * it in the predef table. And diagnose it better :)
1871 if (!OPTS_FLAG(FTEPP_PREDEFS)) {
1872 for (i = 0; i < sizeof(ftepp_predefs)/sizeof(*ftepp_predefs); i++) {
1873 if (!strcmp(ftepp_predefs[i].name, parser_tokval(parser))) {
1874 parseerror(parser, "unexpected ident: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1881 * TODO: determine the best score for the identifier: be it
1882 * a variable, a field.
1884 * We should also consider adding correction tables for
1885 * other things as well.
1887 if (OPTS_OPTION_BOOL(OPTION_CORRECTION)) {
1889 correct_init(&corr);
1891 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1892 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1893 if (strcmp(correct, parser_tokval(parser))) {
1895 } else if (correct) {
1900 correct_free(&corr);
1903 parseerror(parser, "unexpected ident: %s (did you mean %s?)", parser_tokval(parser), correct);
1908 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1914 if (ast_istype(var, ast_value)) {
1915 ((ast_value*)var)->uses++;
1917 else if (ast_istype(var, ast_member)) {
1918 ast_member *mem = (ast_member*)var;
1919 if (ast_istype(mem->owner, ast_value))
1920 ((ast_value*)(mem->owner))->uses++;
1923 vec_push(sy->out, syexp(parser_ctx(parser), var));
1926 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1930 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1932 ast_expression *expr = NULL;
1935 bool wantop = false;
1936 /* only warn once about an assignment in a truth value because the current code
1937 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1939 bool warn_truthvalue = true;
1941 /* count the parens because an if starts with one, so the
1942 * end of a condition is an unmatched closing paren
1946 memset(&sy, 0, sizeof(sy));
1948 parser->lex->flags.noops = false;
1950 parser_reclassify_token(parser);
1954 if (parser->tok == TOKEN_TYPENAME) {
1955 parseerror(parser, "unexpected typename");
1959 if (parser->tok == TOKEN_OPERATOR)
1961 /* classify the operator */
1962 const oper_info *op;
1963 const oper_info *olast = NULL;
1965 for (o = 0; o < operator_count; ++o) {
1966 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1967 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1968 !strcmp(parser_tokval(parser), operators[o].op))
1973 if (o == operator_count) {
1974 compile_error(parser_ctx(parser), "unknown operator: %s", parser_tokval(parser));
1977 /* found an operator */
1980 /* when declaring variables, a comma starts a new variable */
1981 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
1982 /* fixup the token */
1987 /* a colon without a pervious question mark cannot be a ternary */
1988 if (!ternaries && op->id == opid2(':','?')) {
1993 if (op->id == opid1(',')) {
1994 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1995 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1999 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2000 olast = &operators[vec_last(sy.ops).etype-1];
2002 #define IsAssignOp(x) (\
2003 (x) == opid1('=') || \
2004 (x) == opid2('+','=') || \
2005 (x) == opid2('-','=') || \
2006 (x) == opid2('*','=') || \
2007 (x) == opid2('/','=') || \
2008 (x) == opid2('%','=') || \
2009 (x) == opid2('&','=') || \
2010 (x) == opid2('|','=') || \
2011 (x) == opid3('&','~','=') \
2013 if (warn_truthvalue) {
2014 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
2015 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
2016 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
2019 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
2020 warn_truthvalue = false;
2025 (op->prec < olast->prec) ||
2026 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
2028 if (!parser_sy_apply_operator(parser, &sy))
2030 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2031 olast = &operators[vec_last(sy.ops).etype-1];
2036 if (op->id == opid1('(')) {
2038 size_t sycount = vec_size(sy.out);
2039 /* we expected an operator, this is the function-call operator */
2040 vec_push(sy.paren, PAREN_FUNC);
2041 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
2042 vec_push(sy.argc, 0);
2044 vec_push(sy.paren, PAREN_EXPR);
2045 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2048 } else if (op->id == opid1('[')) {
2050 parseerror(parser, "unexpected array subscript");
2053 vec_push(sy.paren, PAREN_INDEX);
2054 /* push both the operator and the paren, this makes life easier */
2055 vec_push(sy.ops, syop(parser_ctx(parser), op));
2056 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2058 } else if (op->id == opid2('?',':')) {
2059 vec_push(sy.ops, syop(parser_ctx(parser), op));
2060 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2063 vec_push(sy.paren, PAREN_TERNARY1);
2064 } else if (op->id == opid2(':','?')) {
2065 if (!vec_size(sy.paren)) {
2066 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2069 if (vec_last(sy.paren) != PAREN_TERNARY1) {
2070 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2073 if (!parser_close_paren(parser, &sy))
2075 vec_push(sy.ops, syop(parser_ctx(parser), op));
2079 vec_push(sy.ops, syop(parser_ctx(parser), op));
2080 wantop = !!(op->flags & OP_SUFFIX);
2083 else if (parser->tok == ')') {
2084 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2085 if (!parser_sy_apply_operator(parser, &sy))
2088 if (!vec_size(sy.paren))
2091 if (vec_last(sy.paren) == PAREN_TERNARY1) {
2092 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
2095 if (!parser_close_paren(parser, &sy))
2098 /* must be a function call without parameters */
2099 if (vec_last(sy.paren) != PAREN_FUNC) {
2100 parseerror(parser, "closing paren in invalid position");
2103 if (!parser_close_paren(parser, &sy))
2108 else if (parser->tok == '(') {
2109 parseerror(parser, "internal error: '(' should be classified as operator");
2112 else if (parser->tok == '[') {
2113 parseerror(parser, "internal error: '[' should be classified as operator");
2116 else if (parser->tok == ']') {
2117 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2118 if (!parser_sy_apply_operator(parser, &sy))
2121 if (!vec_size(sy.paren))
2123 if (vec_last(sy.paren) != PAREN_INDEX) {
2124 parseerror(parser, "mismatched parentheses, unexpected ']'");
2127 if (!parser_close_paren(parser, &sy))
2132 if (!parse_sya_operand(parser, &sy, with_labels))
2135 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
2136 vec_last(sy.argc)++;
2141 parseerror(parser, "expected operator or end of statement");
2145 if (!parser_next(parser)) {
2148 if (parser->tok == ';' ||
2149 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
2150 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
2156 while (vec_size(sy.ops)) {
2157 if (!parser_sy_apply_operator(parser, &sy))
2161 parser->lex->flags.noops = true;
2162 if (!vec_size(sy.out)) {
2163 parseerror(parser, "empty expression");
2166 expr = sy.out[0].out;
2169 if (vec_size(sy.paren)) {
2170 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
2178 parser->lex->flags.noops = true;
2179 for (i = 0; i < vec_size(sy.out); ++i) {
2181 ast_unref(sy.out[i].out);
2190 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
2192 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
2195 if (parser->tok != ';') {
2196 parseerror(parser, "semicolon expected after expression");
2200 if (!parser_next(parser)) {
2207 static void parser_enterblock(parser_t *parser)
2209 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2210 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2211 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2212 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2213 vec_push(parser->_block_ctx, parser_ctx(parser));
2216 vec_push(parser->correct_variables, correct_trie_new());
2217 vec_push(parser->correct_variables_score, NULL);
2220 static bool parser_leaveblock(parser_t *parser)
2223 size_t locals, typedefs;
2225 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2226 parseerror(parser, "internal error: parser_leaveblock with no block");
2230 util_htdel(vec_last(parser->variables));
2231 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2233 vec_pop(parser->variables);
2234 vec_pop(parser->correct_variables);
2235 vec_pop(parser->correct_variables_score);
2236 if (!vec_size(parser->_blocklocals)) {
2237 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2241 locals = vec_last(parser->_blocklocals);
2242 vec_pop(parser->_blocklocals);
2243 while (vec_size(parser->_locals) != locals) {
2244 ast_expression *e = vec_last(parser->_locals);
2245 ast_value *v = (ast_value*)e;
2246 vec_pop(parser->_locals);
2247 if (ast_istype(e, ast_value) && !v->uses) {
2248 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2253 typedefs = vec_last(parser->_blocktypedefs);
2254 while (vec_size(parser->_typedefs) != typedefs) {
2255 ast_delete(vec_last(parser->_typedefs));
2256 vec_pop(parser->_typedefs);
2258 util_htdel(vec_last(parser->typedefs));
2259 vec_pop(parser->typedefs);
2261 vec_pop(parser->_block_ctx);
2266 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2268 vec_push(parser->_locals, e);
2269 util_htset(vec_last(parser->variables), name, (void*)e);
2273 vec_last(parser->correct_variables),
2274 &vec_last(parser->correct_variables_score),
2279 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2281 vec_push(parser->globals, e);
2282 util_htset(parser->htglobals, name, e);
2286 parser->correct_variables[0],
2287 &parser->correct_variables_score[0],
2292 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2296 ast_expression *prev;
2298 if (cond->expression.vtype == TYPE_VOID || cond->expression.vtype >= TYPE_VARIANT) {
2300 ast_type_to_string(cond, ty, sizeof(ty));
2301 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2304 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
2307 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2310 parseerror(parser, "internal error: failed to process condition");
2315 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
2317 /* vector types need to be cast to true booleans */
2318 ast_binary *bin = (ast_binary*)cond;
2319 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2321 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2323 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2326 parseerror(parser, "internal error: failed to process condition");
2333 unary = (ast_unary*)cond;
2334 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2336 cond = unary->operand;
2337 unary->operand = NULL;
2340 unary = (ast_unary*)cond;
2344 parseerror(parser, "internal error: failed to process condition");
2346 if (ifnot) *_ifnot = !*_ifnot;
2350 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2353 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2356 lex_ctx ctx = parser_ctx(parser);
2358 (void)block; /* not touching */
2360 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2361 if (!parser_next(parser)) {
2362 parseerror(parser, "expected condition or 'not'");
2365 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2367 if (!parser_next(parser)) {
2368 parseerror(parser, "expected condition in parenthesis");
2372 if (parser->tok != '(') {
2373 parseerror(parser, "expected 'if' condition in parenthesis");
2376 /* parse into the expression */
2377 if (!parser_next(parser)) {
2378 parseerror(parser, "expected 'if' condition after opening paren");
2381 /* parse the condition */
2382 cond = parse_expression_leave(parser, false, true, false);
2386 if (parser->tok != ')') {
2387 parseerror(parser, "expected closing paren after 'if' condition");
2391 /* parse into the 'then' branch */
2392 if (!parser_next(parser)) {
2393 parseerror(parser, "expected statement for on-true branch of 'if'");
2397 if (!parse_statement_or_block(parser, &ontrue)) {
2402 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2403 /* check for an else */
2404 if (!strcmp(parser_tokval(parser), "else")) {
2405 /* parse into the 'else' branch */
2406 if (!parser_next(parser)) {
2407 parseerror(parser, "expected on-false branch after 'else'");
2412 if (!parse_statement_or_block(parser, &onfalse)) {
2419 cond = process_condition(parser, cond, &ifnot);
2421 if (ontrue) ast_delete(ontrue);
2422 if (onfalse) ast_delete(onfalse);
2427 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2429 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2430 *out = (ast_expression*)ifthen;
2434 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2435 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2440 /* skip the 'while' and get the body */
2441 if (!parser_next(parser)) {
2442 if (OPTS_FLAG(LOOP_LABELS))
2443 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2445 parseerror(parser, "expected 'while' condition in parenthesis");
2449 if (parser->tok == ':') {
2450 if (!OPTS_FLAG(LOOP_LABELS))
2451 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2452 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2453 parseerror(parser, "expected loop label");
2456 label = util_strdup(parser_tokval(parser));
2457 if (!parser_next(parser)) {
2459 parseerror(parser, "expected 'while' condition in parenthesis");
2464 if (parser->tok != '(') {
2465 parseerror(parser, "expected 'while' condition in parenthesis");
2469 vec_push(parser->breaks, label);
2470 vec_push(parser->continues, label);
2472 rv = parse_while_go(parser, block, out);
2475 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2476 parseerror(parser, "internal error: label stack corrupted");
2482 vec_pop(parser->breaks);
2483 vec_pop(parser->continues);
2488 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2491 ast_expression *cond, *ontrue;
2495 lex_ctx ctx = parser_ctx(parser);
2497 (void)block; /* not touching */
2499 /* parse into the expression */
2500 if (!parser_next(parser)) {
2501 parseerror(parser, "expected 'while' condition after opening paren");
2504 /* parse the condition */
2505 cond = parse_expression_leave(parser, false, true, false);
2509 if (parser->tok != ')') {
2510 parseerror(parser, "expected closing paren after 'while' condition");
2514 /* parse into the 'then' branch */
2515 if (!parser_next(parser)) {
2516 parseerror(parser, "expected while-loop body");
2520 if (!parse_statement_or_block(parser, &ontrue)) {
2525 cond = process_condition(parser, cond, &ifnot);
2530 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2531 *out = (ast_expression*)aloop;
2535 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2536 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2541 /* skip the 'do' and get the body */
2542 if (!parser_next(parser)) {
2543 if (OPTS_FLAG(LOOP_LABELS))
2544 parseerror(parser, "expected loop label or body");
2546 parseerror(parser, "expected loop body");
2550 if (parser->tok == ':') {
2551 if (!OPTS_FLAG(LOOP_LABELS))
2552 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2553 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2554 parseerror(parser, "expected loop label");
2557 label = util_strdup(parser_tokval(parser));
2558 if (!parser_next(parser)) {
2560 parseerror(parser, "expected loop body");
2565 vec_push(parser->breaks, label);
2566 vec_push(parser->continues, label);
2568 rv = parse_dowhile_go(parser, block, out);
2571 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2572 parseerror(parser, "internal error: label stack corrupted");
2578 vec_pop(parser->breaks);
2579 vec_pop(parser->continues);
2584 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2587 ast_expression *cond, *ontrue;
2591 lex_ctx ctx = parser_ctx(parser);
2593 (void)block; /* not touching */
2595 if (!parse_statement_or_block(parser, &ontrue))
2598 /* expect the "while" */
2599 if (parser->tok != TOKEN_KEYWORD ||
2600 strcmp(parser_tokval(parser), "while"))
2602 parseerror(parser, "expected 'while' and condition");
2607 /* skip the 'while' and check for opening paren */
2608 if (!parser_next(parser) || parser->tok != '(') {
2609 parseerror(parser, "expected 'while' condition in parenthesis");
2613 /* parse into the expression */
2614 if (!parser_next(parser)) {
2615 parseerror(parser, "expected 'while' condition after opening paren");
2619 /* parse the condition */
2620 cond = parse_expression_leave(parser, false, true, false);
2624 if (parser->tok != ')') {
2625 parseerror(parser, "expected closing paren after 'while' condition");
2631 if (!parser_next(parser) || parser->tok != ';') {
2632 parseerror(parser, "expected semicolon after condition");
2638 if (!parser_next(parser)) {
2639 parseerror(parser, "parse error");
2645 cond = process_condition(parser, cond, &ifnot);
2650 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2651 *out = (ast_expression*)aloop;
2655 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2656 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2661 /* skip the 'for' and check for opening paren */
2662 if (!parser_next(parser)) {
2663 if (OPTS_FLAG(LOOP_LABELS))
2664 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2666 parseerror(parser, "expected 'for' expressions in parenthesis");
2670 if (parser->tok == ':') {
2671 if (!OPTS_FLAG(LOOP_LABELS))
2672 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2673 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2674 parseerror(parser, "expected loop label");
2677 label = util_strdup(parser_tokval(parser));
2678 if (!parser_next(parser)) {
2680 parseerror(parser, "expected 'for' expressions in parenthesis");
2685 if (parser->tok != '(') {
2686 parseerror(parser, "expected 'for' expressions in parenthesis");
2690 vec_push(parser->breaks, label);
2691 vec_push(parser->continues, label);
2693 rv = parse_for_go(parser, block, out);
2696 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2697 parseerror(parser, "internal error: label stack corrupted");
2703 vec_pop(parser->breaks);
2704 vec_pop(parser->continues);
2708 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2711 ast_expression *initexpr, *cond, *increment, *ontrue;
2717 lex_ctx ctx = parser_ctx(parser);
2719 parser_enterblock(parser);
2726 /* parse into the expression */
2727 if (!parser_next(parser)) {
2728 parseerror(parser, "expected 'for' initializer after opening paren");
2733 if (parser->tok == TOKEN_IDENT)
2734 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2736 if (typevar || parser->tok == TOKEN_TYPENAME) {
2738 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2739 if (parsewarning(parser, WARN_EXTENSIONS,
2740 "current standard does not allow variable declarations in for-loop initializers"))
2744 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2747 else if (parser->tok != ';')
2749 initexpr = parse_expression_leave(parser, false, false, false);
2754 /* move on to condition */
2755 if (parser->tok != ';') {
2756 parseerror(parser, "expected semicolon after for-loop initializer");
2759 if (!parser_next(parser)) {
2760 parseerror(parser, "expected for-loop condition");
2764 /* parse the condition */
2765 if (parser->tok != ';') {
2766 cond = parse_expression_leave(parser, false, true, false);
2771 /* move on to incrementor */
2772 if (parser->tok != ';') {
2773 parseerror(parser, "expected semicolon after for-loop initializer");
2776 if (!parser_next(parser)) {
2777 parseerror(parser, "expected for-loop condition");
2781 /* parse the incrementor */
2782 if (parser->tok != ')') {
2783 lex_ctx condctx = parser_ctx(parser);
2784 increment = parse_expression_leave(parser, false, false, false);
2787 if (!ast_side_effects(increment)) {
2788 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2794 if (parser->tok != ')') {
2795 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2798 /* parse into the 'then' branch */
2799 if (!parser_next(parser)) {
2800 parseerror(parser, "expected for-loop body");
2803 if (!parse_statement_or_block(parser, &ontrue))
2807 cond = process_condition(parser, cond, &ifnot);
2811 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2812 *out = (ast_expression*)aloop;
2814 if (!parser_leaveblock(parser))
2818 if (initexpr) ast_delete(initexpr);
2819 if (cond) ast_delete(cond);
2820 if (increment) ast_delete(increment);
2821 (void)!parser_leaveblock(parser);
2825 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2827 ast_expression *exp = NULL;
2828 ast_return *ret = NULL;
2829 ast_value *expected = parser->function->vtype;
2831 lex_ctx ctx = parser_ctx(parser);
2833 (void)block; /* not touching */
2835 if (!parser_next(parser)) {
2836 parseerror(parser, "expected return expression");
2840 if (parser->tok != ';') {
2841 exp = parse_expression(parser, false, false);
2845 if (exp->expression.vtype != TYPE_NIL &&
2846 exp->expression.vtype != expected->expression.next->expression.vtype)
2848 parseerror(parser, "return with invalid expression");
2851 ret = ast_return_new(ctx, exp);
2857 if (!parser_next(parser))
2858 parseerror(parser, "parse error");
2859 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2860 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2862 ret = ast_return_new(ctx, NULL);
2864 *out = (ast_expression*)ret;
2868 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2871 unsigned int levels = 0;
2872 lex_ctx ctx = parser_ctx(parser);
2873 const char **loops = (is_continue ? parser->continues : parser->breaks);
2875 (void)block; /* not touching */
2876 if (!parser_next(parser)) {
2877 parseerror(parser, "expected semicolon or loop label");
2881 if (!vec_size(loops)) {
2883 parseerror(parser, "`continue` can only be used inside loops");
2885 parseerror(parser, "`break` can only be used inside loops or switches");
2888 if (parser->tok == TOKEN_IDENT) {
2889 if (!OPTS_FLAG(LOOP_LABELS))
2890 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2891 i = vec_size(loops);
2893 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2896 parseerror(parser, "no such loop to %s: `%s`",
2897 (is_continue ? "continue" : "break out of"),
2898 parser_tokval(parser));
2903 if (!parser_next(parser)) {
2904 parseerror(parser, "expected semicolon");
2909 if (parser->tok != ';') {
2910 parseerror(parser, "expected semicolon");
2914 if (!parser_next(parser))
2915 parseerror(parser, "parse error");
2917 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2921 /* returns true when it was a variable qualifier, false otherwise!
2922 * on error, cvq is set to CV_WRONG
2924 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2926 bool had_const = false;
2927 bool had_var = false;
2928 bool had_noref = false;
2929 bool had_attrib = false;
2930 bool had_static = false;
2935 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2937 /* parse an attribute */
2938 if (!parser_next(parser)) {
2939 parseerror(parser, "expected attribute after `[[`");
2943 if (!strcmp(parser_tokval(parser), "noreturn")) {
2944 flags |= AST_FLAG_NORETURN;
2945 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2946 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2951 else if (!strcmp(parser_tokval(parser), "noref")) {
2953 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2954 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2959 else if (!strcmp(parser_tokval(parser), "inline")) {
2960 flags |= AST_FLAG_INLINE;
2961 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2962 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2967 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
2968 flags |= AST_FLAG_ALIAS;
2971 if (!parser_next(parser)) {
2972 parseerror(parser, "parse error in attribute");
2976 if (parser->tok == '(') {
2977 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2978 parseerror(parser, "`alias` attribute missing parameter");
2982 *message = util_strdup(parser_tokval(parser));
2984 if (!parser_next(parser)) {
2985 parseerror(parser, "parse error in attribute");
2989 if (parser->tok != ')') {
2990 parseerror(parser, "`alias` attribute expected `)` after parameter");
2994 if (!parser_next(parser)) {
2995 parseerror(parser, "parse error in attribute");
3000 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3001 parseerror(parser, "`alias` attribute expected `]]`");
3005 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
3006 flags |= AST_FLAG_DEPRECATED;
3009 if (!parser_next(parser)) {
3010 parseerror(parser, "parse error in attribute");
3014 if (parser->tok == '(') {
3015 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
3016 parseerror(parser, "`deprecated` attribute missing parameter");
3020 *message = util_strdup(parser_tokval(parser));
3022 if (!parser_next(parser)) {
3023 parseerror(parser, "parse error in attribute");
3027 if(parser->tok != ')') {
3028 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
3032 if (!parser_next(parser)) {
3033 parseerror(parser, "parse error in attribute");
3038 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3039 parseerror(parser, "`deprecated` attribute expected `]]`");
3042 if (*message) mem_d(*message);
3050 /* Skip tokens until we hit a ]] */
3051 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
3052 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3053 if (!parser_next(parser)) {
3054 parseerror(parser, "error inside attribute");
3061 else if (with_local && !strcmp(parser_tokval(parser), "static"))
3063 else if (!strcmp(parser_tokval(parser), "const"))
3065 else if (!strcmp(parser_tokval(parser), "var"))
3067 else if (with_local && !strcmp(parser_tokval(parser), "local"))
3069 else if (!strcmp(parser_tokval(parser), "noref"))
3071 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
3076 if (!parser_next(parser))
3086 *is_static = had_static;
3090 parseerror(parser, "parse error after variable qualifier");
3095 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
3096 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
3101 /* skip the 'while' and get the body */
3102 if (!parser_next(parser)) {
3103 if (OPTS_FLAG(LOOP_LABELS))
3104 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
3106 parseerror(parser, "expected 'switch' operand in parenthesis");
3110 if (parser->tok == ':') {
3111 if (!OPTS_FLAG(LOOP_LABELS))
3112 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3113 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3114 parseerror(parser, "expected loop label");
3117 label = util_strdup(parser_tokval(parser));
3118 if (!parser_next(parser)) {
3120 parseerror(parser, "expected 'switch' operand in parenthesis");
3125 if (parser->tok != '(') {
3126 parseerror(parser, "expected 'switch' operand in parenthesis");
3130 vec_push(parser->breaks, label);
3132 rv = parse_switch_go(parser, block, out);
3135 if (vec_last(parser->breaks) != label) {
3136 parseerror(parser, "internal error: label stack corrupted");
3142 vec_pop(parser->breaks);
3147 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3149 ast_expression *operand;
3152 ast_switch *switchnode;
3153 ast_switch_case swcase;
3156 bool noref, is_static;
3157 uint32_t qflags = 0;
3159 lex_ctx ctx = parser_ctx(parser);
3161 (void)block; /* not touching */
3164 /* parse into the expression */
3165 if (!parser_next(parser)) {
3166 parseerror(parser, "expected switch operand");
3169 /* parse the operand */
3170 operand = parse_expression_leave(parser, false, false, false);
3174 switchnode = ast_switch_new(ctx, operand);
3177 if (parser->tok != ')') {
3178 ast_delete(switchnode);
3179 parseerror(parser, "expected closing paren after 'switch' operand");
3183 /* parse over the opening paren */
3184 if (!parser_next(parser) || parser->tok != '{') {
3185 ast_delete(switchnode);
3186 parseerror(parser, "expected list of cases");
3190 if (!parser_next(parser)) {
3191 ast_delete(switchnode);
3192 parseerror(parser, "expected 'case' or 'default'");
3196 /* new block; allow some variables to be declared here */
3197 parser_enterblock(parser);
3200 if (parser->tok == TOKEN_IDENT)
3201 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3202 if (typevar || parser->tok == TOKEN_TYPENAME) {
3203 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3204 ast_delete(switchnode);
3209 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3211 if (cvq == CV_WRONG) {
3212 ast_delete(switchnode);
3215 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3216 ast_delete(switchnode);
3225 while (parser->tok != '}') {
3226 ast_block *caseblock;
3228 if (!strcmp(parser_tokval(parser), "case")) {
3229 if (!parser_next(parser)) {
3230 ast_delete(switchnode);
3231 parseerror(parser, "expected expression for case");
3234 swcase.value = parse_expression_leave(parser, false, false, false);
3235 if (!swcase.value) {
3236 ast_delete(switchnode);
3237 parseerror(parser, "expected expression for case");
3240 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3241 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3242 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3248 else if (!strcmp(parser_tokval(parser), "default")) {
3249 swcase.value = NULL;
3250 if (!parser_next(parser)) {
3251 ast_delete(switchnode);
3252 parseerror(parser, "expected colon");
3257 ast_delete(switchnode);
3258 parseerror(parser, "expected 'case' or 'default'");
3262 /* Now the colon and body */
3263 if (parser->tok != ':') {
3264 if (swcase.value) ast_unref(swcase.value);
3265 ast_delete(switchnode);
3266 parseerror(parser, "expected colon");
3270 if (!parser_next(parser)) {
3271 if (swcase.value) ast_unref(swcase.value);
3272 ast_delete(switchnode);
3273 parseerror(parser, "expected statements or case");
3276 caseblock = ast_block_new(parser_ctx(parser));
3278 if (swcase.value) ast_unref(swcase.value);
3279 ast_delete(switchnode);
3282 swcase.code = (ast_expression*)caseblock;
3283 vec_push(switchnode->cases, swcase);
3285 ast_expression *expr;
3286 if (parser->tok == '}')
3288 if (parser->tok == TOKEN_KEYWORD) {
3289 if (!strcmp(parser_tokval(parser), "case") ||
3290 !strcmp(parser_tokval(parser), "default"))
3295 if (!parse_statement(parser, caseblock, &expr, true)) {
3296 ast_delete(switchnode);
3301 if (!ast_block_add_expr(caseblock, expr)) {
3302 ast_delete(switchnode);
3308 parser_leaveblock(parser);
3311 if (parser->tok != '}') {
3312 ast_delete(switchnode);
3313 parseerror(parser, "expected closing paren of case list");
3316 if (!parser_next(parser)) {
3317 ast_delete(switchnode);
3318 parseerror(parser, "parse error after switch");
3321 *out = (ast_expression*)switchnode;
3325 ast_expression *parser_builtin_pow(parser_t *parser) {
3327 * float __builtin_pow(float x, float y) {
3328 * float value = 1.0f;
3340 static ast_function *pow_func = NULL;
3341 static ast_value *pow_func_val = NULL;
3343 ast_value *pow_arguments[2];
3344 ast_value *pow_value = ast_value_new (parser_ctx(parser), "value", TYPE_FLOAT);
3345 ast_block *pow_body = ast_block_new (parser_ctx(parser));
3346 ast_block *pow_loop_body = ast_block_new (parser_ctx(parser));
3347 ast_block *pow_loop_nest_body = ast_block_new (parser_ctx(parser));
3348 ast_loop *pow_loop = NULL;
3349 ast_loop *pow_loop_nest = NULL;
3351 pow_arguments[0] = ast_value_new (parser_ctx(parser), "x", TYPE_FLOAT);
3352 pow_arguments[1] = ast_value_new (parser_ctx(parser), "x", TYPE_FLOAT);
3353 pow_func_val = ast_value_new (parser_ctx(parser), "__builtin_pow", TYPE_FUNCTION);
3354 pow_func_val->expression.next = (ast_expression*)ast_value_new(parser_ctx(parser), "<float>", TYPE_FLOAT);
3356 vec_push(pow_func_val->expression.params, pow_arguments[0]);
3357 vec_push(pow_func_val->expression.params, pow_arguments[1]);
3359 pow_func = ast_function_new(parser_ctx(parser), "__builtin_pow", pow_func_val);
3362 vec_push(pow_body->locals, pow_value);
3364 vec_push(pow_body->exprs,
3365 (ast_expression*)ast_store_new(
3368 (ast_expression*)pow_value,
3369 (ast_expression*)parser_const_float_1(parser)
3374 vec_push(pow_loop_nest_body->exprs,
3375 (ast_expression*)ast_binstore_new(
3379 (ast_expression*)pow_arguments[1],
3380 (ast_expression*)parser_const_float(parser, 0.25f)
3383 vec_push(pow_loop_nest_body->exprs,
3384 (ast_expression*)ast_binstore_new(
3388 (ast_expression*)pow_arguments[0],
3389 (ast_expression*)pow_arguments[0]
3393 /* while (!(y&1)) */
3394 pow_loop_nest = ast_loop_new (
3397 (ast_expression*)ast_binary_new(
3400 (ast_expression*)pow_arguments[1],
3401 (ast_expression*)parser_const_float_1(parser)
3407 (ast_expression*)pow_loop_nest_body
3410 vec_push(pow_loop_body->exprs, (ast_expression*)pow_loop_nest);
3411 vec_push(pow_loop_body->exprs,
3412 (ast_expression*)ast_binstore_new(
3416 (ast_expression*)pow_arguments[1],
3417 (ast_expression*)parser_const_float_1(parser)
3420 vec_push(pow_loop_body->exprs,
3421 (ast_expression*)ast_binstore_new(
3425 (ast_expression*)pow_value,
3426 (ast_expression*)pow_arguments[0]
3430 /* while (y > 0) { */
3431 pow_loop = ast_loop_new(
3434 (ast_expression*)ast_binary_new(
3437 (ast_expression*)pow_arguments[1],
3438 (ast_expression*)parser_const_float_0(parser)
3444 (ast_expression*)pow_loop_body
3447 vec_push(pow_body->exprs, (ast_expression*)pow_loop);
3449 vec_push(pow_body->exprs,
3450 (ast_expression*)ast_return_new(
3452 (ast_expression*)pow_value
3456 vec_push(pow_func->blocks, pow_body);
3457 vec_push(parser->globals, (ast_expression*)pow_func_val);
3458 vec_push(parser->functions, pow_func);
3461 return (ast_expression*)pow_func_val;
3465 #define M_E 2.71828182845905
3467 static ast_expression *parser_builtin_exp(parser_t *parser) {
3469 * float __builtin_exp(float x) {
3470 * return __builtin_exp(E, x);
3473 static ast_value *exp_func_val = NULL;
3475 if (!exp_func_val) {
3476 ast_function *exp_func = NULL;
3477 ast_value *arg = ast_value_new (parser_ctx(parser), "x", TYPE_FLOAT);
3478 ast_block *exp_body = ast_block_new (parser_ctx(parser));
3479 ast_call *exp_call = ast_call_new (parser_ctx(parser), parser_builtin_pow(parser));
3480 exp_func_val = ast_value_new (parser_ctx(parser), "__builtin_exp", TYPE_FUNCTION);
3481 exp_func_val->expression.next = (ast_expression*)ast_value_new(parser_ctx(parser), "<float>", TYPE_FLOAT);
3482 exp_func = ast_function_new(parser_ctx(parser), "__builtin_exp", exp_func_val);
3484 vec_push(exp_call->params, (ast_expression*)parser_const_float(parser, M_E));
3485 vec_push(exp_call->params, (ast_expression*)arg);
3487 vec_push(exp_body->exprs,
3488 (ast_expression*)ast_return_new(
3490 (ast_expression*)exp_call
3494 vec_push(exp_func_val->expression.params, arg);
3495 vec_push(exp_func->blocks, exp_body);
3497 vec_push(parser->functions, exp_func);
3498 vec_push(parser->globals, (ast_expression*)exp_func_val);
3501 return (ast_expression*)exp_func_val;
3504 /* parse computed goto sides */
3505 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3506 ast_expression *on_true;
3507 ast_expression *on_false;
3508 ast_expression *cond;
3513 if (ast_istype(*side, ast_ternary)) {
3514 ast_ternary *tern = (ast_ternary*)*side;
3515 on_true = parse_goto_computed(parser, &tern->on_true);
3516 on_false = parse_goto_computed(parser, &tern->on_false);
3518 if (!on_true || !on_false) {
3519 parseerror(parser, "expected label or expression in ternary");
3520 if (on_true) ast_unref(on_true);
3521 if (on_false) ast_unref(on_false);
3529 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3530 } else if (ast_istype(*side, ast_label)) {
3531 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3532 ast_goto_set_label(gt, ((ast_label*)*side));
3534 return (ast_expression*)gt;
3539 static bool parse_goto(parser_t *parser, ast_expression **out)
3541 ast_goto *gt = NULL;
3542 ast_expression *lbl;
3544 if (!parser_next(parser))
3547 if (parser->tok != TOKEN_IDENT) {
3548 ast_expression *expression;
3550 /* could be an expression i.e computed goto :-) */
3551 if (parser->tok != '(') {
3552 parseerror(parser, "expected label name after `goto`");
3556 /* failed to parse expression for goto */
3557 if (!(expression = parse_expression(parser, false, true)) ||
3558 !(*out = parse_goto_computed(parser, &expression))) {
3559 parseerror(parser, "invalid goto expression");
3560 ast_unref(expression);
3567 /* not computed goto */
3568 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3569 lbl = parser_find_label(parser, gt->name);
3571 if (!ast_istype(lbl, ast_label)) {
3572 parseerror(parser, "internal error: label is not an ast_label");
3576 ast_goto_set_label(gt, (ast_label*)lbl);
3579 vec_push(parser->gotos, gt);
3581 if (!parser_next(parser) || parser->tok != ';') {
3582 parseerror(parser, "semicolon expected after goto label");
3585 if (!parser_next(parser)) {
3586 parseerror(parser, "parse error after goto");
3590 *out = (ast_expression*)gt;
3594 static bool parse_skipwhite(parser_t *parser)
3597 if (!parser_next(parser))
3599 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3600 return parser->tok < TOKEN_ERROR;
3603 static bool parse_eol(parser_t *parser)
3605 if (!parse_skipwhite(parser))
3607 return parser->tok == TOKEN_EOL;
3610 static bool parse_pragma_do(parser_t *parser)
3612 if (!parser_next(parser) ||
3613 parser->tok != TOKEN_IDENT ||
3614 strcmp(parser_tokval(parser), "pragma"))
3616 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3619 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3620 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3624 if (!strcmp(parser_tokval(parser), "noref")) {
3625 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3626 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3629 parser->noref = !!parser_token(parser)->constval.i;
3630 if (!parse_eol(parser)) {
3631 parseerror(parser, "parse error after `noref` pragma");
3637 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3644 static bool parse_pragma(parser_t *parser)
3647 parser->lex->flags.preprocessing = true;
3648 parser->lex->flags.mergelines = true;
3649 rv = parse_pragma_do(parser);
3650 if (parser->tok != TOKEN_EOL) {
3651 parseerror(parser, "junk after pragma");
3654 parser->lex->flags.preprocessing = false;
3655 parser->lex->flags.mergelines = false;
3656 if (!parser_next(parser)) {
3657 parseerror(parser, "parse error after pragma");
3663 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3665 bool noref, is_static;
3667 uint32_t qflags = 0;
3668 ast_value *typevar = NULL;
3669 char *vstring = NULL;
3673 if (parser->tok == TOKEN_IDENT)
3674 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3676 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3678 /* local variable */
3680 parseerror(parser, "cannot declare a variable from here");
3683 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3684 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3687 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3691 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3693 if (cvq == CV_WRONG)
3695 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3697 else if (parser->tok == TOKEN_KEYWORD)
3699 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3704 if (!parser_next(parser)) {
3705 parseerror(parser, "parse error after __builtin_debug_printtype");
3709 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3711 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3712 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3713 if (!parser_next(parser)) {
3714 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3720 if (!parse_statement(parser, block, out, allow_cases))
3723 con_out("__builtin_debug_printtype: got no output node\n");
3726 ast_type_to_string(*out, ty, sizeof(ty));
3727 con_out("__builtin_debug_printtype: `%s`\n", ty);
3732 else if (!strcmp(parser_tokval(parser), "return"))
3734 return parse_return(parser, block, out);
3736 else if (!strcmp(parser_tokval(parser), "if"))
3738 return parse_if(parser, block, out);
3740 else if (!strcmp(parser_tokval(parser), "while"))
3742 return parse_while(parser, block, out);
3744 else if (!strcmp(parser_tokval(parser), "do"))
3746 return parse_dowhile(parser, block, out);
3748 else if (!strcmp(parser_tokval(parser), "for"))
3750 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3751 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3754 return parse_for(parser, block, out);
3756 else if (!strcmp(parser_tokval(parser), "break"))
3758 return parse_break_continue(parser, block, out, false);
3760 else if (!strcmp(parser_tokval(parser), "continue"))
3762 return parse_break_continue(parser, block, out, true);
3764 else if (!strcmp(parser_tokval(parser), "switch"))
3766 return parse_switch(parser, block, out);
3768 else if (!strcmp(parser_tokval(parser), "case") ||
3769 !strcmp(parser_tokval(parser), "default"))
3772 parseerror(parser, "unexpected 'case' label");
3777 else if (!strcmp(parser_tokval(parser), "goto"))
3779 return parse_goto(parser, out);
3781 else if (!strcmp(parser_tokval(parser), "typedef"))
3783 if (!parser_next(parser)) {
3784 parseerror(parser, "expected type definition after 'typedef'");
3787 return parse_typedef(parser);
3789 parseerror(parser, "Unexpected keyword");
3792 else if (parser->tok == '{')
3795 inner = parse_block(parser);
3798 *out = (ast_expression*)inner;
3801 else if (parser->tok == ':')
3805 if (!parser_next(parser)) {
3806 parseerror(parser, "expected label name");
3809 if (parser->tok != TOKEN_IDENT) {
3810 parseerror(parser, "label must be an identifier");
3813 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3815 if (!label->undefined) {
3816 parseerror(parser, "label `%s` already defined", label->name);
3819 label->undefined = false;
3822 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3823 vec_push(parser->labels, label);
3825 *out = (ast_expression*)label;
3826 if (!parser_next(parser)) {
3827 parseerror(parser, "parse error after label");
3830 for (i = 0; i < vec_size(parser->gotos); ++i) {
3831 if (!strcmp(parser->gotos[i]->name, label->name)) {
3832 ast_goto_set_label(parser->gotos[i], label);
3833 vec_remove(parser->gotos, i, 1);
3839 else if (parser->tok == ';')
3841 if (!parser_next(parser)) {
3842 parseerror(parser, "parse error after empty statement");
3849 lex_ctx ctx = parser_ctx(parser);
3850 ast_expression *exp = parse_expression(parser, false, false);
3854 if (!ast_side_effects(exp)) {
3855 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3862 static bool parse_enum(parser_t *parser)
3866 ast_value **values = NULL;
3867 ast_value *var = NULL;
3870 ast_expression *old;
3872 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3873 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3877 /* enumeration attributes (can add more later) */
3878 if (parser->tok == ':') {
3879 if (!parser_next(parser) || parser->tok != TOKEN_IDENT || strcmp(parser_tokval(parser), "flag")) {
3880 parseerror(parser, "expected `flag` after enumeration attribute ':'");
3884 if (!parser_next(parser) || parser->tok != '{') {
3885 parseerror(parser, "expected `{` after enum attribute `flag`");
3889 /* flagged enumeration start from 1 */
3895 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3896 if (parser->tok == '}') {
3897 /* allow an empty enum */
3900 parseerror(parser, "expected identifier or `}`");
3904 old = parser_find_field(parser, parser_tokval(parser));
3906 old = parser_find_global(parser, parser_tokval(parser));
3908 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3909 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3913 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3914 vec_push(values, var);
3915 var->cvq = CV_CONST;
3916 var->hasvalue = true;
3918 /* for flagged enumerations increment in POTs of TWO */
3919 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3921 parser_addglobal(parser, var->name, (ast_expression*)var);
3923 if (!parser_next(parser)) {
3924 parseerror(parser, "expected `=`, `}` or comma after identifier");
3928 if (parser->tok == ',')
3930 if (parser->tok == '}')
3932 if (parser->tok != '=') {
3933 parseerror(parser, "expected `=`, `}` or comma after identifier");
3937 if (!parser_next(parser)) {
3938 parseerror(parser, "expected expression after `=`");
3942 /* We got a value! */
3943 old = parse_expression_leave(parser, true, false, false);
3944 asvalue = (ast_value*)old;
3945 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3946 compile_error(ast_ctx(var), "constant value or expression expected");
3949 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3951 if (parser->tok == '}')
3953 if (parser->tok != ',') {
3954 parseerror(parser, "expected `}` or comma after expression");
3959 if (parser->tok != '}') {
3960 parseerror(parser, "internal error: breaking without `}`");
3964 if (!parser_next(parser) || parser->tok != ';') {
3965 parseerror(parser, "expected semicolon after enumeration");
3969 if (!parser_next(parser)) {
3970 parseerror(parser, "parse error after enumeration");
3982 static bool parse_block_into(parser_t *parser, ast_block *block)
3986 parser_enterblock(parser);
3988 if (!parser_next(parser)) { /* skip the '{' */
3989 parseerror(parser, "expected function body");
3993 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3995 ast_expression *expr = NULL;
3996 if (parser->tok == '}')
3999 if (!parse_statement(parser, block, &expr, false)) {
4000 /* parseerror(parser, "parse error"); */
4006 if (!ast_block_add_expr(block, expr)) {
4013 if (parser->tok != '}') {
4016 (void)parser_next(parser);
4020 if (!parser_leaveblock(parser))
4022 return retval && !!block;
4025 static ast_block* parse_block(parser_t *parser)
4028 block = ast_block_new(parser_ctx(parser));
4031 if (!parse_block_into(parser, block)) {
4032 ast_block_delete(block);
4038 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
4040 if (parser->tok == '{') {
4041 *out = (ast_expression*)parse_block(parser);
4044 return parse_statement(parser, NULL, out, false);
4047 static bool create_vector_members(ast_value *var, ast_member **me)
4050 size_t len = strlen(var->name);
4052 for (i = 0; i < 3; ++i) {
4053 char *name = (char*)mem_a(len+3);
4054 memcpy(name, var->name, len);
4056 name[len+1] = 'x'+i;
4058 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
4067 do { ast_member_delete(me[--i]); } while(i);
4071 static bool parse_function_body(parser_t *parser, ast_value *var)
4073 ast_block *block = NULL;
4078 ast_expression *framenum = NULL;
4079 ast_expression *nextthink = NULL;
4080 /* None of the following have to be deleted */
4081 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
4082 ast_expression *gbl_time = NULL, *gbl_self = NULL;
4083 bool has_frame_think;
4087 has_frame_think = false;
4088 old = parser->function;
4090 if (var->expression.flags & AST_FLAG_ALIAS) {
4091 parseerror(parser, "function aliases cannot have bodies");
4095 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
4096 parseerror(parser, "gotos/labels leaking");
4100 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4101 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
4102 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
4108 if (parser->tok == '[') {
4109 /* got a frame definition: [ framenum, nextthink ]
4110 * this translates to:
4111 * self.frame = framenum;
4112 * self.nextthink = time + 0.1;
4113 * self.think = nextthink;
4117 fld_think = parser_find_field(parser, "think");
4118 fld_nextthink = parser_find_field(parser, "nextthink");
4119 fld_frame = parser_find_field(parser, "frame");
4120 if (!fld_think || !fld_nextthink || !fld_frame) {
4121 parseerror(parser, "cannot use [frame,think] notation without the required fields");
4122 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
4125 gbl_time = parser_find_global(parser, "time");
4126 gbl_self = parser_find_global(parser, "self");
4127 if (!gbl_time || !gbl_self) {
4128 parseerror(parser, "cannot use [frame,think] notation without the required globals");
4129 parseerror(parser, "please declare the following globals: `time`, `self`");
4133 if (!parser_next(parser))
4136 framenum = parse_expression_leave(parser, true, false, false);
4138 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
4141 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
4142 ast_unref(framenum);
4143 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
4147 if (parser->tok != ',') {
4148 ast_unref(framenum);
4149 parseerror(parser, "expected comma after frame number in [frame,think] notation");
4150 parseerror(parser, "Got a %i\n", parser->tok);
4154 if (!parser_next(parser)) {
4155 ast_unref(framenum);
4159 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
4161 /* qc allows the use of not-yet-declared functions here
4162 * - this automatically creates a prototype */
4163 ast_value *thinkfunc;
4164 ast_expression *functype = fld_think->expression.next;
4166 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
4167 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
4168 ast_unref(framenum);
4169 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
4172 ast_type_adopt(thinkfunc, functype);
4174 if (!parser_next(parser)) {
4175 ast_unref(framenum);
4176 ast_delete(thinkfunc);
4180 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
4182 nextthink = (ast_expression*)thinkfunc;
4185 nextthink = parse_expression_leave(parser, true, false, false);
4187 ast_unref(framenum);
4188 parseerror(parser, "expected a think-function in [frame,think] notation");
4193 if (!ast_istype(nextthink, ast_value)) {
4194 parseerror(parser, "think-function in [frame,think] notation must be a constant");
4198 if (retval && parser->tok != ']') {
4199 parseerror(parser, "expected closing `]` for [frame,think] notation");
4203 if (retval && !parser_next(parser)) {
4207 if (retval && parser->tok != '{') {
4208 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
4213 ast_unref(nextthink);
4214 ast_unref(framenum);
4218 has_frame_think = true;
4221 block = ast_block_new(parser_ctx(parser));
4223 parseerror(parser, "failed to allocate block");
4224 if (has_frame_think) {
4225 ast_unref(nextthink);
4226 ast_unref(framenum);
4231 if (has_frame_think) {
4233 ast_expression *self_frame;
4234 ast_expression *self_nextthink;
4235 ast_expression *self_think;
4236 ast_expression *time_plus_1;
4237 ast_store *store_frame;
4238 ast_store *store_nextthink;
4239 ast_store *store_think;
4241 ctx = parser_ctx(parser);
4242 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
4243 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
4244 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
4246 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
4247 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
4249 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
4250 if (self_frame) ast_delete(self_frame);
4251 if (self_nextthink) ast_delete(self_nextthink);
4252 if (self_think) ast_delete(self_think);
4253 if (time_plus_1) ast_delete(time_plus_1);
4259 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
4260 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
4261 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
4264 ast_delete(self_frame);
4267 if (!store_nextthink) {
4268 ast_delete(self_nextthink);
4272 ast_delete(self_think);
4276 if (store_frame) ast_delete(store_frame);
4277 if (store_nextthink) ast_delete(store_nextthink);
4278 if (store_think) ast_delete(store_think);
4281 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
4282 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
4283 !ast_block_add_expr(block, (ast_expression*)store_think))
4290 parseerror(parser, "failed to generate code for [frame,think]");
4291 ast_unref(nextthink);
4292 ast_unref(framenum);
4298 if (var->hasvalue) {
4299 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
4300 ast_block_delete(block);
4304 func = ast_function_new(ast_ctx(var), var->name, var);
4306 parseerror(parser, "failed to allocate function for `%s`", var->name);
4307 ast_block_delete(block);
4310 vec_push(parser->functions, func);
4312 parser_enterblock(parser);
4314 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
4316 ast_value *param = var->expression.params[parami];
4319 if (param->expression.vtype != TYPE_VECTOR &&
4320 (param->expression.vtype != TYPE_FIELD ||
4321 param->expression.next->expression.vtype != TYPE_VECTOR))
4326 if (!create_vector_members(param, me)) {
4327 ast_block_delete(block);
4331 for (e = 0; e < 3; ++e) {
4332 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4333 ast_block_collect(block, (ast_expression*)me[e]);
4337 if (var->argcounter) {
4338 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4339 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4343 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4345 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4346 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4347 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4348 varargs->expression.count = 0;
4349 snprintf(name, sizeof(name), "%s##va##SET", var->name);
4350 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4351 ast_delete(varargs);
4352 ast_block_delete(block);
4355 snprintf(name, sizeof(name), "%s##va##GET", var->name);
4356 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4357 ast_delete(varargs);
4358 ast_block_delete(block);
4361 func->varargs = varargs;
4363 func->fixedparams = parser_const_float(parser, vec_size(var->expression.params));
4366 parser->function = func;
4367 if (!parse_block_into(parser, block)) {
4368 ast_block_delete(block);
4372 vec_push(func->blocks, block);
4374 parser->function = old;
4375 if (!parser_leaveblock(parser))
4377 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4378 parseerror(parser, "internal error: local scopes left");
4382 if (parser->tok == ';')
4383 return parser_next(parser);
4384 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4385 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4389 (void)!parser_leaveblock(parser);
4390 vec_pop(parser->functions);
4391 ast_function_delete(func);
4392 var->constval.vfunc = NULL;
4395 parser->function = old;
4399 static ast_expression *array_accessor_split(
4404 ast_expression *left,
4405 ast_expression *right
4411 lex_ctx ctx = ast_ctx(array);
4413 if (!left || !right) {
4414 if (left) ast_delete(left);
4415 if (right) ast_delete(right);
4419 cmp = ast_binary_new(ctx, INSTR_LT,
4420 (ast_expression*)index,
4421 (ast_expression*)parser_const_float(parser, middle));
4425 parseerror(parser, "internal error: failed to create comparison for array setter");
4429 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4431 ast_delete(cmp); /* will delete left and right */
4432 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4436 return (ast_expression*)ifthen;
4439 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4441 lex_ctx ctx = ast_ctx(array);
4443 if (from+1 == afterend) {
4444 /* set this value */
4447 ast_array_index *subscript;
4449 int assignop = type_store_instr[value->expression.vtype];
4451 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
4452 assignop = INSTR_STORE_V;
4454 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4458 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4460 ast_delete(subscript);
4464 block = ast_block_new(ctx);
4470 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4475 ret = ast_return_new(ctx, NULL);
4481 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4486 return (ast_expression*)block;
4488 ast_expression *left, *right;
4489 size_t diff = afterend - from;
4490 size_t middle = from + diff/2;
4491 left = array_setter_node(parser, array, index, value, from, middle);
4492 right = array_setter_node(parser, array, index, value, middle, afterend);
4493 return array_accessor_split(parser, array, index, middle, left, right);
4497 static ast_expression *array_field_setter_node(
4506 lex_ctx ctx = ast_ctx(array);
4508 if (from+1 == afterend) {
4509 /* set this value */
4512 ast_entfield *entfield;
4513 ast_array_index *subscript;
4515 int assignop = type_storep_instr[value->expression.vtype];
4517 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
4518 assignop = INSTR_STOREP_V;
4520 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4524 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4525 subscript->expression.vtype = TYPE_FIELD;
4527 entfield = ast_entfield_new_force(ctx,
4528 (ast_expression*)entity,
4529 (ast_expression*)subscript,
4530 (ast_expression*)subscript);
4532 ast_delete(subscript);
4536 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4538 ast_delete(entfield);
4542 block = ast_block_new(ctx);
4548 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4553 ret = ast_return_new(ctx, NULL);
4559 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4564 return (ast_expression*)block;
4566 ast_expression *left, *right;
4567 size_t diff = afterend - from;
4568 size_t middle = from + diff/2;
4569 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4570 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4571 return array_accessor_split(parser, array, index, middle, left, right);
4575 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4577 lex_ctx ctx = ast_ctx(array);
4579 if (from+1 == afterend) {
4581 ast_array_index *subscript;
4583 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4587 ret = ast_return_new(ctx, (ast_expression*)subscript);
4589 ast_delete(subscript);
4593 return (ast_expression*)ret;
4595 ast_expression *left, *right;
4596 size_t diff = afterend - from;
4597 size_t middle = from + diff/2;
4598 left = array_getter_node(parser, array, index, from, middle);
4599 right = array_getter_node(parser, array, index, middle, afterend);
4600 return array_accessor_split(parser, array, index, middle, left, right);
4604 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4606 ast_function *func = NULL;
4607 ast_value *fval = NULL;
4608 ast_block *body = NULL;
4610 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4612 parseerror(parser, "failed to create accessor function value");
4616 func = ast_function_new(ast_ctx(array), funcname, fval);
4619 parseerror(parser, "failed to create accessor function node");
4623 body = ast_block_new(ast_ctx(array));
4625 parseerror(parser, "failed to create block for array accessor");
4631 vec_push(func->blocks, body);
4634 vec_push(parser->accessors, fval);
4639 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4641 ast_value *index = NULL;
4642 ast_value *value = NULL;
4646 if (!ast_istype(array->expression.next, ast_value)) {
4647 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4651 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4653 func = fval->constval.vfunc;
4654 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4656 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4657 value = ast_value_copy((ast_value*)array->expression.next);
4659 if (!index || !value) {
4660 parseerror(parser, "failed to create locals for array accessor");
4663 (void)!ast_value_set_name(value, "value"); /* not important */
4664 vec_push(fval->expression.params, index);
4665 vec_push(fval->expression.params, value);
4667 array->setter = fval;
4670 if (index) ast_delete(index);
4671 if (value) ast_delete(value);
4677 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4679 ast_expression *root = NULL;
4680 root = array_setter_node(parser, array,
4681 array->setter->expression.params[0],
4682 array->setter->expression.params[1],
4683 0, array->expression.count);
4685 parseerror(parser, "failed to build accessor search tree");
4688 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4695 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4697 if (!parser_create_array_setter_proto(parser, array, funcname))
4699 return parser_create_array_setter_impl(parser, array);
4702 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4704 ast_expression *root = NULL;
4705 ast_value *entity = NULL;
4706 ast_value *index = NULL;
4707 ast_value *value = NULL;
4711 if (!ast_istype(array->expression.next, ast_value)) {
4712 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4716 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4718 func = fval->constval.vfunc;
4719 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4721 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4722 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4723 value = ast_value_copy((ast_value*)array->expression.next);
4724 if (!entity || !index || !value) {
4725 parseerror(parser, "failed to create locals for array accessor");
4728 (void)!ast_value_set_name(value, "value"); /* not important */
4729 vec_push(fval->expression.params, entity);
4730 vec_push(fval->expression.params, index);
4731 vec_push(fval->expression.params, value);
4733 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4735 parseerror(parser, "failed to build accessor search tree");
4739 array->setter = fval;
4740 return ast_block_add_expr(func->blocks[0], root);
4742 if (entity) ast_delete(entity);
4743 if (index) ast_delete(index);
4744 if (value) ast_delete(value);
4745 if (root) ast_delete(root);
4751 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4753 ast_value *index = NULL;
4757 /* NOTE: checking array->expression.next rather than elemtype since
4758 * for fields elemtype is a temporary fieldtype.
4760 if (!ast_istype(array->expression.next, ast_value)) {
4761 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4765 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4767 func = fval->constval.vfunc;
4768 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4770 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4773 parseerror(parser, "failed to create locals for array accessor");
4776 vec_push(fval->expression.params, index);
4778 array->getter = fval;
4781 if (index) ast_delete(index);
4787 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4789 ast_expression *root = NULL;
4791 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4793 parseerror(parser, "failed to build accessor search tree");
4796 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4803 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4805 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4807 return parser_create_array_getter_impl(parser, array);
4810 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4811 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4819 bool variadic = false;
4820 ast_value *varparam = NULL;
4821 char *argcounter = NULL;
4823 ctx = parser_ctx(parser);
4825 /* for the sake of less code we parse-in in this function */
4826 if (!parser_next(parser)) {
4827 parseerror(parser, "expected parameter list");
4833 /* parse variables until we hit a closing paren */
4834 while (parser->tok != ')') {
4836 /* there must be commas between them */
4837 if (parser->tok != ',') {
4838 parseerror(parser, "expected comma or end of parameter list");
4841 if (!parser_next(parser)) {
4842 parseerror(parser, "expected parameter");
4848 if (parser->tok == TOKEN_DOTS) {
4849 /* '...' indicates a varargs function */
4851 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4852 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4855 if (parser->tok == TOKEN_IDENT) {
4856 argcounter = util_strdup(parser_tokval(parser));
4857 if (!parser_next(parser) || parser->tok != ')') {
4858 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4865 /* for anything else just parse a typename */
4866 param = parse_typename(parser, NULL, NULL);
4869 vec_push(params, param);
4870 if (param->expression.vtype >= TYPE_VARIANT) {
4871 char tname[1024]; /* typename is reserved in C++ */
4872 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4873 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4876 /* type-restricted varargs */
4877 if (parser->tok == TOKEN_DOTS) {
4879 varparam = vec_last(params);
4881 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4882 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4885 if (parser->tok == TOKEN_IDENT) {
4886 argcounter = util_strdup(parser_tokval(parser));
4887 if (!parser_next(parser) || parser->tok != ')') {
4888 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4896 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4900 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4901 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4904 if (!parser_next(parser)) {
4905 parseerror(parser, "parse error after typename");
4909 /* now turn 'var' into a function type */
4910 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4911 fval->expression.next = (ast_expression*)var;
4913 fval->expression.flags |= AST_FLAG_VARIADIC;
4916 var->expression.params = params;
4917 var->expression.varparam = (ast_expression*)varparam;
4918 var->argcounter = argcounter;
4927 for (i = 0; i < vec_size(params); ++i)
4928 ast_delete(params[i]);
4933 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4935 ast_expression *cexp;
4936 ast_value *cval, *tmp;
4939 ctx = parser_ctx(parser);
4941 if (!parser_next(parser)) {
4943 parseerror(parser, "expected array-size");
4947 cexp = parse_expression_leave(parser, true, false, false);
4949 if (!cexp || !ast_istype(cexp, ast_value)) {
4953 parseerror(parser, "expected array-size as constant positive integer");
4956 cval = (ast_value*)cexp;
4958 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4959 tmp->expression.next = (ast_expression*)var;
4962 if (cval->expression.vtype == TYPE_INTEGER)
4963 tmp->expression.count = cval->constval.vint;
4964 else if (cval->expression.vtype == TYPE_FLOAT)
4965 tmp->expression.count = cval->constval.vfloat;
4969 parseerror(parser, "array-size must be a positive integer constant");
4974 if (parser->tok != ']') {
4976 parseerror(parser, "expected ']' after array-size");
4979 if (!parser_next(parser)) {
4981 parseerror(parser, "error after parsing array size");
4987 /* Parse a complete typename.
4988 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4989 * but when parsing variables separated by comma
4990 * 'storebase' should point to where the base-type should be kept.
4991 * The base type makes up every bit of type information which comes *before* the
4994 * The following will be parsed in its entirety:
4996 * The 'basetype' in this case is 'void()'
4997 * and if there's a comma after it, say:
4999 * then the type-information 'void()' can be stored in 'storebase'
5001 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
5003 ast_value *var, *tmp;
5006 const char *name = NULL;
5007 bool isfield = false;
5008 bool wasarray = false;
5009 size_t morefields = 0;
5011 ctx = parser_ctx(parser);
5013 /* types may start with a dot */
5014 if (parser->tok == '.') {
5016 /* if we parsed a dot we need a typename now */
5017 if (!parser_next(parser)) {
5018 parseerror(parser, "expected typename for field definition");
5022 /* Further dots are handled seperately because they won't be part of the
5025 while (parser->tok == '.') {
5027 if (!parser_next(parser)) {
5028 parseerror(parser, "expected typename for field definition");
5033 if (parser->tok == TOKEN_IDENT)
5034 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
5035 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
5036 parseerror(parser, "expected typename");
5040 /* generate the basic type value */
5041 if (cached_typedef) {
5042 var = ast_value_copy(cached_typedef);
5043 ast_value_set_name(var, "<type(from_def)>");
5045 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
5047 for (; morefields; --morefields) {
5048 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
5049 tmp->expression.next = (ast_expression*)var;
5053 /* do not yet turn into a field - remember:
5054 * .void() foo; is a field too
5055 * .void()() foo; is a function
5059 if (!parser_next(parser)) {
5061 parseerror(parser, "parse error after typename");
5065 /* an opening paren now starts the parameter-list of a function
5066 * this is where original-QC has parameter lists.
5067 * We allow a single parameter list here.
5068 * Much like fteqcc we don't allow `float()() x`
5070 if (parser->tok == '(') {
5071 var = parse_parameter_list(parser, var);
5076 /* store the base if requested */
5078 *storebase = ast_value_copy(var);
5080 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5081 tmp->expression.next = (ast_expression*)*storebase;
5086 /* there may be a name now */
5087 if (parser->tok == TOKEN_IDENT) {
5088 name = util_strdup(parser_tokval(parser));
5090 if (!parser_next(parser)) {
5092 parseerror(parser, "error after variable or field declaration");
5097 /* now this may be an array */
5098 if (parser->tok == '[') {
5100 var = parse_arraysize(parser, var);
5105 /* This is the point where we can turn it into a field */
5107 /* turn it into a field if desired */
5108 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5109 tmp->expression.next = (ast_expression*)var;
5113 /* now there may be function parens again */
5114 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5115 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5116 if (parser->tok == '(' && wasarray)
5117 parseerror(parser, "arrays as part of a return type is not supported");
5118 while (parser->tok == '(') {
5119 var = parse_parameter_list(parser, var);
5127 /* finally name it */
5129 if (!ast_value_set_name(var, name)) {
5131 parseerror(parser, "internal error: failed to set name");
5134 /* free the name, ast_value_set_name duplicates */
5141 static bool parse_typedef(parser_t *parser)
5143 ast_value *typevar, *oldtype;
5144 ast_expression *old;
5146 typevar = parse_typename(parser, NULL, NULL);
5151 if ( (old = parser_find_var(parser, typevar->name)) ) {
5152 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
5153 " -> `%s` has been declared here: %s:%i",
5154 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
5155 ast_delete(typevar);
5159 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
5160 parseerror(parser, "type `%s` has already been declared here: %s:%i",
5161 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
5162 ast_delete(typevar);
5166 vec_push(parser->_typedefs, typevar);
5167 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
5169 if (parser->tok != ';') {
5170 parseerror(parser, "expected semicolon after typedef");
5173 if (!parser_next(parser)) {
5174 parseerror(parser, "parse error after typedef");
5181 static const char *cvq_to_str(int cvq) {
5183 case CV_NONE: return "none";
5184 case CV_VAR: return "`var`";
5185 case CV_CONST: return "`const`";
5186 default: return "<INVALID>";
5190 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
5193 if (proto->cvq != var->cvq) {
5194 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
5195 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5196 parser->tok == '='))
5198 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
5199 "`%s` declared with different qualifiers: %s\n"
5200 " -> previous declaration here: %s:%i uses %s",
5201 var->name, cvq_to_str(var->cvq),
5202 ast_ctx(proto).file, ast_ctx(proto).line,
5203 cvq_to_str(proto->cvq));
5206 av = (var ->expression.flags & AST_FLAG_NORETURN);
5207 ao = (proto->expression.flags & AST_FLAG_NORETURN);
5209 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
5210 "`%s` declared with different attributes%s\n"
5211 " -> previous declaration here: %s:%i",
5212 var->name, (av ? ": noreturn" : ""),
5213 ast_ctx(proto).file, ast_ctx(proto).line,
5214 (ao ? ": noreturn" : ""));
5219 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)
5223 ast_expression *old;
5227 ast_value *basetype = NULL;
5229 bool isparam = false;
5230 bool isvector = false;
5231 bool cleanvar = true;
5232 bool wasarray = false;
5236 if (!localblock && is_static)
5237 parseerror(parser, "`static` qualifier is not supported in global scope");
5239 /* get the first complete variable */
5240 var = parse_typename(parser, &basetype, cached_typedef);
5243 ast_delete(basetype);
5251 /* Part 0: finish the type */
5252 if (parser->tok == '(') {
5253 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5254 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5255 var = parse_parameter_list(parser, var);
5261 /* we only allow 1-dimensional arrays */
5262 if (parser->tok == '[') {
5264 var = parse_arraysize(parser, var);
5270 if (parser->tok == '(' && wasarray) {
5271 parseerror(parser, "arrays as part of a return type is not supported");
5272 /* we'll still parse the type completely for now */
5274 /* for functions returning functions */
5275 while (parser->tok == '(') {
5276 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5277 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5278 var = parse_parameter_list(parser, var);
5285 var->cvq = qualifier;
5286 var->expression.flags |= qflags;
5289 * store the vstring back to var for alias and
5290 * deprecation messages.
5292 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5293 var->expression.flags & AST_FLAG_ALIAS)
5294 var->desc = vstring;
5297 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5298 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5299 * is then filled with the previous definition and the parameter-names replaced.
5301 if (!strcmp(var->name, "nil")) {
5302 if (OPTS_FLAG(UNTYPED_NIL)) {
5303 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5304 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5306 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5309 /* Deal with end_sys_ vars */
5311 if (!strcmp(var->name, "end_sys_globals")) {
5313 parser->crc_globals = vec_size(parser->globals);
5316 else if (!strcmp(var->name, "end_sys_fields")) {
5318 parser->crc_fields = vec_size(parser->fields);
5321 if (was_end && var->expression.vtype == TYPE_FIELD) {
5322 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5323 "global '%s' hint should not be a field",
5324 parser_tokval(parser)))
5331 if (!nofields && var->expression.vtype == TYPE_FIELD)
5333 /* deal with field declarations */
5334 old = parser_find_field(parser, var->name);
5336 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5337 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5346 parseerror(parser, "field `%s` already declared here: %s:%i",
5347 var->name, ast_ctx(old).file, ast_ctx(old).line);
5352 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5353 (old = parser_find_global(parser, var->name)))
5355 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5356 parseerror(parser, "field `%s` already declared here: %s:%i",
5357 var->name, ast_ctx(old).file, ast_ctx(old).line);
5364 /* deal with other globals */
5365 old = parser_find_global(parser, var->name);
5366 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
5368 /* This is a function which had a prototype */
5369 if (!ast_istype(old, ast_value)) {
5370 parseerror(parser, "internal error: prototype is not an ast_value");
5374 proto = (ast_value*)old;
5375 proto->desc = var->desc;
5376 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5377 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5379 ast_ctx(proto).file, ast_ctx(proto).line);
5383 /* we need the new parameter-names */
5384 for (i = 0; i < vec_size(proto->expression.params); ++i)
5385 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5386 if (!parser_check_qualifiers(parser, var, proto)) {
5393 proto->expression.flags |= var->expression.flags;
5401 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5402 "global `%s` already declared here: %s:%i",
5403 var->name, ast_ctx(old).file, ast_ctx(old).line))
5408 proto = (ast_value*)old;
5409 if (!ast_istype(old, ast_value)) {
5410 parseerror(parser, "internal error: not an ast_value");
5415 if (!parser_check_qualifiers(parser, var, proto)) {
5420 proto->expression.flags |= var->expression.flags;
5424 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5425 (old = parser_find_field(parser, var->name)))
5427 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5428 parseerror(parser, "global `%s` already declared here: %s:%i",
5429 var->name, ast_ctx(old).file, ast_ctx(old).line);
5436 else /* it's not a global */
5438 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5439 if (old && !isparam) {
5440 parseerror(parser, "local `%s` already declared here: %s:%i",
5441 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5445 old = parser_find_local(parser, var->name, 0, &isparam);
5446 if (old && isparam) {
5447 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5448 "local `%s` is shadowing a parameter", var->name))
5450 parseerror(parser, "local `%s` already declared here: %s:%i",
5451 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5455 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5463 /* in a noref section we simply bump the usecount */
5464 if (noref || parser->noref)
5468 * Create the global/local, and deal with vector types.
5471 if (var->expression.vtype == TYPE_VECTOR)
5473 else if (var->expression.vtype == TYPE_FIELD &&
5474 var->expression.next->expression.vtype == TYPE_VECTOR)
5478 if (!create_vector_members(var, me)) {
5485 /* deal with global variables, fields, functions */
5486 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5487 var->isfield = true;
5488 vec_push(parser->fields, (ast_expression*)var);
5489 util_htset(parser->htfields, var->name, var);
5491 for (i = 0; i < 3; ++i) {
5492 vec_push(parser->fields, (ast_expression*)me[i]);
5493 util_htset(parser->htfields, me[i]->name, me[i]);
5498 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5499 parser_addglobal(parser, var->name, (ast_expression*)var);
5501 for (i = 0; i < 3; ++i) {
5502 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5506 ast_expression *find = parser_find_global(parser, var->desc);
5509 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5513 if (var->expression.vtype != find->expression.vtype) {
5517 ast_type_to_string(find, ty1, sizeof(ty1));
5518 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5520 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5527 * add alias to aliases table and to corrector
5528 * so corrections can apply for aliases as well.
5530 util_htset(parser->aliases, var->name, find);
5533 * add to corrector so corrections can work
5534 * even for aliases too.
5537 vec_last(parser->correct_variables),
5538 &vec_last(parser->correct_variables_score),
5542 /* generate aliases for vector components */
5546 util_asprintf(&buffer[0], "%s_x", var->desc);
5547 util_asprintf(&buffer[1], "%s_y", var->desc);
5548 util_asprintf(&buffer[2], "%s_z", var->desc);
5550 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5551 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5552 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5559 * add to corrector so corrections can work
5560 * even for aliases too.
5563 vec_last(parser->correct_variables),
5564 &vec_last(parser->correct_variables_score),
5568 vec_last(parser->correct_variables),
5569 &vec_last(parser->correct_variables_score),
5573 vec_last(parser->correct_variables),
5574 &vec_last(parser->correct_variables_score),
5582 /* a static adds itself to be generated like any other global
5583 * but is added to the local namespace instead
5585 char *defname = NULL;
5586 size_t prefix_len, ln;
5588 ln = strlen(parser->function->name);
5589 vec_append(defname, ln, parser->function->name);
5591 vec_append(defname, 2, "::");
5592 /* remember the length up to here */
5593 prefix_len = vec_size(defname);
5595 /* Add it to the local scope */
5596 util_htset(vec_last(parser->variables), var->name, (void*)var);
5600 vec_last(parser->correct_variables),
5601 &vec_last(parser->correct_variables_score),
5605 /* now rename the global */
5606 ln = strlen(var->name);
5607 vec_append(defname, ln, var->name);
5608 ast_value_set_name(var, defname);
5610 /* push it to the to-be-generated globals */
5611 vec_push(parser->globals, (ast_expression*)var);
5613 /* same game for the vector members */
5615 for (i = 0; i < 3; ++i) {
5616 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5620 vec_last(parser->correct_variables),
5621 &vec_last(parser->correct_variables_score),
5625 vec_shrinkto(defname, prefix_len);
5626 ln = strlen(me[i]->name);
5627 vec_append(defname, ln, me[i]->name);
5628 ast_member_set_name(me[i], defname);
5630 vec_push(parser->globals, (ast_expression*)me[i]);
5635 vec_push(localblock->locals, var);
5636 parser_addlocal(parser, var->name, (ast_expression*)var);
5638 for (i = 0; i < 3; ++i) {
5639 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5640 ast_block_collect(localblock, (ast_expression*)me[i]);
5646 me[0] = me[1] = me[2] = NULL;
5651 if (var->expression.vtype == TYPE_ARRAY) {
5653 snprintf(name, sizeof(name), "%s##SET", var->name);
5654 if (!parser_create_array_setter(parser, var, name))
5656 snprintf(name, sizeof(name), "%s##GET", var->name);
5657 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5660 else if (!localblock && !nofields &&
5661 var->expression.vtype == TYPE_FIELD &&
5662 var->expression.next->expression.vtype == TYPE_ARRAY)
5665 ast_expression *telem;
5667 ast_value *array = (ast_value*)var->expression.next;
5669 if (!ast_istype(var->expression.next, ast_value)) {
5670 parseerror(parser, "internal error: field element type must be an ast_value");
5674 snprintf(name, sizeof(name), "%s##SETF", var->name);
5675 if (!parser_create_array_field_setter(parser, array, name))
5678 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5679 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5680 tfield->expression.next = telem;
5681 snprintf(name, sizeof(name), "%s##GETFP", var->name);
5682 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5690 if (parser->tok == ';') {
5691 ast_delete(basetype);
5692 if (!parser_next(parser)) {
5693 parseerror(parser, "error after variable declaration");
5699 if (parser->tok == ',')
5703 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5706 parseerror(parser, "missing comma or semicolon while parsing variables");
5710 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5711 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5712 "initializing expression turns variable `%s` into a constant in this standard",
5719 if (parser->tok != '{') {
5720 if (parser->tok != '=') {
5721 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5725 if (!parser_next(parser)) {
5726 parseerror(parser, "error parsing initializer");
5730 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5731 parseerror(parser, "expected '=' before function body in this standard");
5734 if (parser->tok == '#') {
5735 ast_function *func = NULL;
5738 parseerror(parser, "cannot declare builtins within functions");
5741 if (var->expression.vtype != TYPE_FUNCTION) {
5742 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5745 if (!parser_next(parser)) {
5746 parseerror(parser, "expected builtin number");
5749 if (parser->tok != TOKEN_INTCONST) {
5750 parseerror(parser, "builtin number must be an integer constant");
5753 if (parser_token(parser)->constval.i < 0) {
5754 parseerror(parser, "builtin number must be an integer greater than zero");
5758 if (var->hasvalue) {
5759 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5760 "builtin `%s` has already been defined\n"
5761 " -> previous declaration here: %s:%i",
5762 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5766 func = ast_function_new(ast_ctx(var), var->name, var);
5768 parseerror(parser, "failed to allocate function for `%s`", var->name);
5771 vec_push(parser->functions, func);
5773 func->builtin = -parser_token(parser)->constval.i-1;
5776 if (!parser_next(parser)) {
5777 parseerror(parser, "expected comma or semicolon");
5779 ast_function_delete(func);
5780 var->constval.vfunc = NULL;
5784 else if (parser->tok == '{' || parser->tok == '[')
5787 parseerror(parser, "cannot declare functions within functions");
5792 ast_ctx(proto) = parser_ctx(parser);
5794 if (!parse_function_body(parser, var))
5796 ast_delete(basetype);
5797 for (i = 0; i < vec_size(parser->gotos); ++i)
5798 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5799 vec_free(parser->gotos);
5800 vec_free(parser->labels);
5803 ast_expression *cexp;
5806 cexp = parse_expression_leave(parser, true, false, false);
5811 cval = (ast_value*)cexp;
5812 if (cval != parser->nil &&
5813 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5816 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5820 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5821 qualifier != CV_VAR)
5823 var->cvq = CV_CONST;
5825 if (cval == parser->nil)
5826 var->expression.flags |= AST_FLAG_INITIALIZED;
5829 var->hasvalue = true;
5830 if (cval->expression.vtype == TYPE_STRING)
5831 var->constval.vstring = parser_strdup(cval->constval.vstring);
5832 else if (cval->expression.vtype == TYPE_FIELD)
5833 var->constval.vfield = cval;
5835 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5841 shunt sy = { NULL, NULL, NULL, NULL };
5844 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5845 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5846 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5847 if (!parser_sy_apply_operator(parser, &sy))
5850 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5851 parseerror(parser, "internal error: leaked operands");
5852 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5862 if (parser->tok == ',') {
5863 if (!parser_next(parser)) {
5864 parseerror(parser, "expected another variable");
5868 if (parser->tok != TOKEN_IDENT) {
5869 parseerror(parser, "expected another variable");
5872 var = ast_value_copy(basetype);
5874 ast_value_set_name(var, parser_tokval(parser));
5875 if (!parser_next(parser)) {
5876 parseerror(parser, "error parsing variable declaration");
5882 if (parser->tok != ';') {
5883 parseerror(parser, "missing semicolon after variables");
5887 if (!parser_next(parser)) {
5888 parseerror(parser, "parse error after variable declaration");
5892 ast_delete(basetype);
5896 if (cleanvar && var)
5898 ast_delete(basetype);
5902 ast_delete(basetype);
5903 if (cleanvar && var)
5905 if (me[0]) ast_member_delete(me[0]);
5906 if (me[1]) ast_member_delete(me[1]);
5907 if (me[2]) ast_member_delete(me[2]);
5911 static bool parser_global_statement(parser_t *parser)
5915 bool is_static = false;
5916 uint32_t qflags = 0;
5917 ast_value *istype = NULL;
5918 char *vstring = NULL;
5920 if (parser->tok == TOKEN_IDENT)
5921 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5923 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5925 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5927 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5929 if (cvq == CV_WRONG)
5931 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5933 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5935 return parse_enum(parser);
5937 else if (parser->tok == TOKEN_KEYWORD)
5939 if (!strcmp(parser_tokval(parser), "typedef")) {
5940 if (!parser_next(parser)) {
5941 parseerror(parser, "expected type definition after 'typedef'");
5944 return parse_typedef(parser);
5946 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5949 else if (parser->tok == '#')
5951 return parse_pragma(parser);
5953 else if (parser->tok == '$')
5955 if (!parser_next(parser)) {
5956 parseerror(parser, "parse error");
5962 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
5968 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5970 return util_crc16(old, str, strlen(str));
5973 static void progdefs_crc_file(const char *str)
5975 /* write to progdefs.h here */
5979 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5981 old = progdefs_crc_sum(old, str);
5982 progdefs_crc_file(str);
5986 static void generate_checksum(parser_t *parser)
5988 uint16_t crc = 0xFFFF;
5992 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5993 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5995 progdefs_crc_file("\tint\tpad;\n");
5996 progdefs_crc_file("\tint\tofs_return[3];\n");
5997 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5998 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5999 progdefs_crc_file("\tint\tofs_parm2[3];\n");
6000 progdefs_crc_file("\tint\tofs_parm3[3];\n");
6001 progdefs_crc_file("\tint\tofs_parm4[3];\n");
6002 progdefs_crc_file("\tint\tofs_parm5[3];\n");
6003 progdefs_crc_file("\tint\tofs_parm6[3];\n");
6004 progdefs_crc_file("\tint\tofs_parm7[3];\n");
6006 for (i = 0; i < parser->crc_globals; ++i) {
6007 if (!ast_istype(parser->globals[i], ast_value))
6009 value = (ast_value*)(parser->globals[i]);
6010 switch (value->expression.vtype) {
6011 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6012 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6013 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6014 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6016 crc = progdefs_crc_both(crc, "\tint\t");
6019 crc = progdefs_crc_both(crc, value->name);
6020 crc = progdefs_crc_both(crc, ";\n");
6022 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
6023 for (i = 0; i < parser->crc_fields; ++i) {
6024 if (!ast_istype(parser->fields[i], ast_value))
6026 value = (ast_value*)(parser->fields[i]);
6027 switch (value->expression.next->expression.vtype) {
6028 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6029 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6030 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6031 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6033 crc = progdefs_crc_both(crc, "\tint\t");
6036 crc = progdefs_crc_both(crc, value->name);
6037 crc = progdefs_crc_both(crc, ";\n");
6039 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
6044 static parser_t *parser;
6051 parser = (parser_t*)mem_a(sizeof(parser_t));
6055 memset(parser, 0, sizeof(*parser));
6057 for (i = 0; i < operator_count; ++i) {
6058 if (operators[i].id == opid1('=')) {
6059 parser->assign_op = operators+i;
6063 if (!parser->assign_op) {
6064 printf("internal error: initializing parser: failed to find assign operator\n");
6069 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
6070 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
6071 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
6072 vec_push(parser->_blocktypedefs, 0);
6074 parser->aliases = util_htnew(PARSER_HT_SIZE);
6077 vec_push(parser->correct_variables, correct_trie_new());
6078 vec_push(parser->correct_variables_score, NULL);
6080 empty_ctx.file = "<internal>";
6082 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
6083 parser->nil->cvq = CV_CONST;
6084 if (OPTS_FLAG(UNTYPED_NIL))
6085 util_htset(parser->htglobals, "nil", (void*)parser->nil);
6087 parser->max_param_count = 1;
6089 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
6090 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
6091 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
6093 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
6094 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
6095 parser->reserved_version->cvq = CV_CONST;
6096 parser->reserved_version->hasvalue = true;
6097 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
6098 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
6100 parser->reserved_version = NULL;
6105 bool parser_compile()
6107 /* initial lexer/parser state */
6108 parser->lex->flags.noops = true;
6110 if (parser_next(parser))
6112 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
6114 if (!parser_global_statement(parser)) {
6115 if (parser->tok == TOKEN_EOF)
6116 parseerror(parser, "unexpected eof");
6117 else if (compile_errors)
6118 parseerror(parser, "there have been errors, bailing out");
6119 lex_close(parser->lex);
6125 parseerror(parser, "parse error");
6126 lex_close(parser->lex);
6131 lex_close(parser->lex);
6134 return !compile_errors;
6137 bool parser_compile_file(const char *filename)
6139 parser->lex = lex_open(filename);
6141 con_err("failed to open file \"%s\"\n", filename);
6144 return parser_compile();
6147 bool parser_compile_string(const char *name, const char *str, size_t len)
6149 parser->lex = lex_open_string(str, len, name);
6151 con_err("failed to create lexer for string \"%s\"\n", name);
6154 return parser_compile();
6157 void parser_cleanup()
6160 for (i = 0; i < vec_size(parser->accessors); ++i) {
6161 ast_delete(parser->accessors[i]->constval.vfunc);
6162 parser->accessors[i]->constval.vfunc = NULL;
6163 ast_delete(parser->accessors[i]);
6165 for (i = 0; i < vec_size(parser->functions); ++i) {
6166 ast_delete(parser->functions[i]);
6168 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6169 ast_delete(parser->imm_vector[i]);
6171 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6172 ast_delete(parser->imm_string[i]);
6174 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6175 ast_delete(parser->imm_float[i]);
6177 for (i = 0; i < vec_size(parser->fields); ++i) {
6178 ast_delete(parser->fields[i]);
6180 for (i = 0; i < vec_size(parser->globals); ++i) {
6181 ast_delete(parser->globals[i]);
6183 vec_free(parser->accessors);
6184 vec_free(parser->functions);
6185 vec_free(parser->imm_vector);
6186 vec_free(parser->imm_string);
6187 vec_free(parser->imm_float);
6188 vec_free(parser->globals);
6189 vec_free(parser->fields);
6191 for (i = 0; i < vec_size(parser->variables); ++i)
6192 util_htdel(parser->variables[i]);
6193 vec_free(parser->variables);
6194 vec_free(parser->_blocklocals);
6195 vec_free(parser->_locals);
6198 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
6199 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
6201 vec_free(parser->correct_variables);
6202 vec_free(parser->correct_variables_score);
6205 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6206 ast_delete(parser->_typedefs[i]);
6207 vec_free(parser->_typedefs);
6208 for (i = 0; i < vec_size(parser->typedefs); ++i)
6209 util_htdel(parser->typedefs[i]);
6210 vec_free(parser->typedefs);
6211 vec_free(parser->_blocktypedefs);
6213 vec_free(parser->_block_ctx);
6215 vec_free(parser->labels);
6216 vec_free(parser->gotos);
6217 vec_free(parser->breaks);
6218 vec_free(parser->continues);
6220 ast_value_delete(parser->nil);
6222 ast_value_delete(parser->const_vec[0]);
6223 ast_value_delete(parser->const_vec[1]);
6224 ast_value_delete(parser->const_vec[2]);
6226 util_htdel(parser->aliases);
6231 bool parser_finish(const char *output)
6237 if (compile_errors) {
6238 con_out("*** there were compile errors\n");
6242 ir = ir_builder_new("gmqcc_out");
6244 con_out("failed to allocate builder\n");
6248 for (i = 0; i < vec_size(parser->fields); ++i) {
6251 if (!ast_istype(parser->fields[i], ast_value))
6253 field = (ast_value*)parser->fields[i];
6254 hasvalue = field->hasvalue;
6255 field->hasvalue = false;
6256 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6257 con_out("failed to generate field %s\n", field->name);
6258 ir_builder_delete(ir);
6263 ast_expression *subtype;
6264 field->hasvalue = true;
6265 subtype = field->expression.next;
6266 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
6267 if (subtype->expression.vtype == TYPE_FIELD)
6268 ifld->fieldtype = subtype->expression.next->expression.vtype;
6269 else if (subtype->expression.vtype == TYPE_FUNCTION)
6270 ifld->outtype = subtype->expression.next->expression.vtype;
6271 (void)!ir_value_set_field(field->ir_v, ifld);
6274 for (i = 0; i < vec_size(parser->globals); ++i) {
6276 if (!ast_istype(parser->globals[i], ast_value))
6278 asvalue = (ast_value*)(parser->globals[i]);
6279 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6280 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6281 "unused global: `%s`", asvalue->name);
6283 if (!ast_global_codegen(asvalue, ir, false)) {
6284 con_out("failed to generate global %s\n", asvalue->name);
6285 ir_builder_delete(ir);
6289 /* Build function vararg accessor ast tree now before generating
6290 * immediates, because the accessors may add new immediates
6292 for (i = 0; i < vec_size(parser->functions); ++i) {
6293 ast_function *f = parser->functions[i];
6295 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6296 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6297 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6298 con_out("failed to generate vararg setter for %s\n", f->name);
6299 ir_builder_delete(ir);
6302 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6303 con_out("failed to generate vararg getter for %s\n", f->name);
6304 ir_builder_delete(ir);
6308 ast_delete(f->varargs);
6313 /* Now we can generate immediates */
6314 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6315 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
6316 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
6317 ir_builder_delete(ir);
6321 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6322 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
6323 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
6324 ir_builder_delete(ir);
6328 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6329 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
6330 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
6331 ir_builder_delete(ir);
6335 for (i = 0; i < vec_size(parser->globals); ++i) {
6337 if (!ast_istype(parser->globals[i], ast_value))
6339 asvalue = (ast_value*)(parser->globals[i]);
6340 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6342 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6343 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6344 "uninitialized constant: `%s`",
6346 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6347 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6348 "uninitialized global: `%s`",
6351 if (!ast_generate_accessors(asvalue, ir)) {
6352 ir_builder_delete(ir);
6356 for (i = 0; i < vec_size(parser->fields); ++i) {
6358 asvalue = (ast_value*)(parser->fields[i]->expression.next);
6360 if (!ast_istype((ast_expression*)asvalue, ast_value))
6362 if (asvalue->expression.vtype != TYPE_ARRAY)
6364 if (!ast_generate_accessors(asvalue, ir)) {
6365 ir_builder_delete(ir);
6369 if (parser->reserved_version &&
6370 !ast_global_codegen(parser->reserved_version, ir, false))
6372 con_out("failed to generate reserved::version");
6373 ir_builder_delete(ir);
6376 for (i = 0; i < vec_size(parser->functions); ++i) {
6377 ast_function *f = parser->functions[i];
6378 if (!ast_function_codegen(f, ir)) {
6379 con_out("failed to generate function %s\n", f->name);
6380 ir_builder_delete(ir);
6384 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6385 ir_builder_dump(ir, con_out);
6386 for (i = 0; i < vec_size(parser->functions); ++i) {
6387 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6388 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6389 ir_builder_delete(ir);
6394 if (compile_Werrors) {
6395 con_out("*** there were warnings treated as errors\n");
6396 compile_show_werrors();
6401 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6402 ir_builder_dump(ir, con_out);
6404 generate_checksum(parser);
6406 if (!ir_builder_generate(ir, output)) {
6407 con_out("*** failed to generate output file\n");
6408 ir_builder_delete(ir);
6413 ir_builder_delete(ir);