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
31 /* beginning of locals */
32 #define PARSER_HT_LOCALS 2
34 #define PARSER_HT_SIZE 128
35 #define TYPEDEF_HT_SIZE 16
37 typedef struct parser_s {
43 ast_expression **globals;
44 ast_expression **fields;
45 ast_function **functions;
46 ast_value **imm_float;
47 ast_value **imm_string;
48 ast_value **imm_vector;
53 /* must be deleted first, they reference immediates and values */
54 ast_value **accessors;
56 ast_value *imm_float_zero;
57 ast_value *imm_float_one;
58 ast_value *imm_float_neg_one;
60 ast_value *imm_vector_zero;
63 ast_value *reserved_version;
68 ast_function *function;
71 /* All the labels the function defined...
72 * Should they be in ast_function instead?
77 const char **continues;
79 /* A list of hashtables for each scope */
85 /* same as above but for the spelling corrector */
86 correct_trie_t **correct_variables;
87 size_t ***correct_variables_score; /* vector of vector of size_t* */
89 /* not to be used directly, we use the hash table */
90 ast_expression **_locals;
92 ast_value **_typedefs;
93 size_t *_blocktypedefs;
96 /* we store the '=' operator info */
97 const oper_info *assign_op;
100 ast_value *const_vec[3];
105 /* collected information */
106 size_t max_param_count;
109 static ast_expression * const intrinsic_debug_typestring = (ast_expression*)0x1;
111 static void parser_enterblock(parser_t *parser);
112 static bool parser_leaveblock(parser_t *parser);
113 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
114 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
115 static bool parse_typedef(parser_t *parser);
116 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);
117 static ast_block* parse_block(parser_t *parser);
118 static bool parse_block_into(parser_t *parser, ast_block *block);
119 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
120 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
121 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
122 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
123 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname);
124 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname);
125 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
127 static void parseerror(parser_t *parser, const char *fmt, ...)
131 vcompile_error(parser->lex->tok.ctx, fmt, ap);
135 /* returns true if it counts as an error */
136 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
141 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
146 /**********************************************************************
147 * some maths used for constant folding
150 vector vec3_add(vector a, vector b)
159 vector vec3_sub(vector a, vector b)
168 qcfloat vec3_mulvv(vector a, vector b)
170 return (a.x * b.x + a.y * b.y + a.z * b.z);
173 vector vec3_mulvf(vector a, float b)
182 /**********************************************************************
186 static bool parser_next(parser_t *parser)
188 /* lex_do kills the previous token */
189 parser->tok = lex_do(parser->lex);
190 if (parser->tok == TOKEN_EOF)
192 if (parser->tok >= TOKEN_ERROR) {
193 parseerror(parser, "lex error");
199 #define parser_tokval(p) ((p)->lex->tok.value)
200 #define parser_token(p) (&((p)->lex->tok))
201 #define parser_ctx(p) ((p)->lex->tok.ctx)
203 static ast_value* parser_const_float(parser_t *parser, double d)
208 for (i = 0; i < vec_size(parser->imm_float); ++i) {
209 const double compare = parser->imm_float[i]->constval.vfloat;
210 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
211 return parser->imm_float[i];
214 ctx = parser_ctx(parser);
216 memset(&ctx, 0, sizeof(ctx));
218 out = ast_value_new(ctx, "#IMMEDIATE", TYPE_FLOAT);
220 out->hasvalue = true;
222 out->constval.vfloat = d;
223 vec_push(parser->imm_float, out);
227 static ast_value* parser_const_float_0(parser_t *parser)
229 if (!parser->imm_float_zero)
230 parser->imm_float_zero = parser_const_float(parser, 0);
231 return parser->imm_float_zero;
234 static ast_value* parser_const_float_neg1(parser_t *parser) {
235 if (!parser->imm_float_neg_one)
236 parser->imm_float_neg_one = parser_const_float(parser, -1);
237 return parser->imm_float_neg_one;
240 static ast_value* parser_const_float_1(parser_t *parser)
242 if (!parser->imm_float_one)
243 parser->imm_float_one = parser_const_float(parser, 1);
244 return parser->imm_float_one;
247 static char *parser_strdup(const char *str)
250 /* actually dup empty strings */
251 char *out = (char*)mem_a(1);
255 return util_strdup(str);
258 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
260 size_t hash = util_hthash(parser->ht_imm_string, str);
262 if ( (out = (ast_value*)util_htgeth(parser->ht_imm_string, str, hash)) ) {
263 if (dotranslate && out->name[0] == '#') {
265 util_snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
266 ast_value_set_name(out, name);
267 out->expression.flags |= AST_FLAG_INCLUDE_DEF;
272 for (i = 0; i < vec_size(parser->imm_string); ++i) {
273 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
274 return parser->imm_string[i];
279 util_snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
280 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
281 out->expression.flags |= AST_FLAG_INCLUDE_DEF;
283 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
285 out->hasvalue = true;
287 out->constval.vstring = parser_strdup(str);
288 vec_push(parser->imm_string, out);
289 util_htseth(parser->ht_imm_string, str, hash, out);
293 static ast_value* parser_const_vector(parser_t *parser, vector v)
297 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
298 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
299 return parser->imm_vector[i];
301 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
303 out->hasvalue = true;
305 out->constval.vvec = v;
306 vec_push(parser->imm_vector, out);
310 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
316 return parser_const_vector(parser, v);
319 static ast_value* parser_const_vector_0(parser_t *parser)
321 if (!parser->imm_vector_zero)
322 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
323 return parser->imm_vector_zero;
326 static ast_expression* parser_find_field(parser_t *parser, const char *name)
328 return ( ast_expression*)util_htget(parser->htfields, name);
331 static ast_expression* parser_find_label(parser_t *parser, const char *name)
334 for(i = 0; i < vec_size(parser->labels); i++)
335 if (!strcmp(parser->labels[i]->name, name))
336 return (ast_expression*)parser->labels[i];
340 static ast_expression* parser_find_global(parser_t *parser, const char *name)
342 ast_expression *var = (ast_expression*)util_htget(parser->aliases, parser_tokval(parser));
345 return (ast_expression*)util_htget(parser->htglobals, name);
348 static ast_expression* parser_find_param(parser_t *parser, const char *name)
352 if (!parser->function)
354 fun = parser->function->vtype;
355 for (i = 0; i < vec_size(fun->expression.params); ++i) {
356 if (!strcmp(fun->expression.params[i]->name, name))
357 return (ast_expression*)(fun->expression.params[i]);
362 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
367 hash = util_hthash(parser->htglobals, name);
370 for (i = vec_size(parser->variables); i > upto;) {
372 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
376 return parser_find_param(parser, name);
379 static ast_expression* parser_find_var(parser_t *parser, const char *name)
383 v = parser_find_local(parser, name, 0, &dummy);
384 if (!v) v = parser_find_global(parser, name);
388 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
392 hash = util_hthash(parser->typedefs[0], name);
394 for (i = vec_size(parser->typedefs); i > upto;) {
396 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
402 /* include intrinsics */
407 size_t etype; /* 0 = expression, others are operators */
411 ast_block *block; /* for commas and function calls */
430 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
441 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
445 e.out = (ast_expression*)v;
452 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
454 e.etype = 1 + (op - operators);
463 static sy_elem syparen(lex_ctx ctx, size_t off) {
474 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
475 * so we need to rotate it to become ent.(foo[n]).
477 static bool rotate_entfield_array_index_nodes(ast_expression **out)
479 ast_array_index *index, *oldindex;
480 ast_entfield *entfield;
484 ast_expression *entity;
486 lex_ctx ctx = ast_ctx(*out);
488 if (!ast_istype(*out, ast_array_index))
490 index = (ast_array_index*)*out;
492 if (!ast_istype(index->array, ast_entfield))
494 entfield = (ast_entfield*)index->array;
496 if (!ast_istype(entfield->field, ast_value))
498 field = (ast_value*)entfield->field;
501 entity = entfield->entity;
505 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
506 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
507 *out = (ast_expression*)entfield;
509 oldindex->array = NULL;
510 oldindex->index = NULL;
511 ast_delete(oldindex);
516 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
518 switch (v->expression.vtype) {
520 return !!v->constval.vfloat;
522 return !!v->constval.vint;
524 if (OPTS_FLAG(CORRECT_LOGIC))
525 return v->constval.vvec.x &&
526 v->constval.vvec.y &&
529 return !!(v->constval.vvec.x);
531 if (!v->constval.vstring)
533 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
535 return !!v->constval.vstring[0];
537 compile_error(ctx, "internal error: immediate_is_true on invalid type");
538 return !!v->constval.vfunc;
542 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
546 ast_expression *out = NULL;
547 ast_expression *exprs[3];
548 ast_block *blocks[3];
549 ast_value *asvalue[3];
550 ast_binstore *asbinstore;
551 size_t i, assignop, addop, subop;
552 qcint generated_op = 0;
557 if (!vec_size(sy->ops)) {
558 parseerror(parser, "internal error: missing operator");
562 if (vec_last(sy->ops).isparen) {
563 parseerror(parser, "unmatched parenthesis");
567 op = &operators[vec_last(sy->ops).etype - 1];
568 ctx = vec_last(sy->ops).ctx;
570 if (vec_size(sy->out) < op->operands) {
571 compile_error(ctx, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
572 op->op, (int)op->id);
576 vec_shrinkby(sy->ops, 1);
578 /* op(:?) has no input and no output */
582 vec_shrinkby(sy->out, op->operands);
583 for (i = 0; i < op->operands; ++i) {
584 exprs[i] = sy->out[vec_size(sy->out)+i].out;
585 blocks[i] = sy->out[vec_size(sy->out)+i].block;
586 asvalue[i] = (ast_value*)exprs[i];
588 if (exprs[i]->vtype == TYPE_NOEXPR &&
589 !(i != 0 && op->id == opid2('?',':')) &&
590 !(i == 1 && op->id == opid1('.')))
592 if (ast_istype(exprs[i], ast_label))
593 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
595 compile_error(ast_ctx(exprs[i]), "not an expression");
596 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
600 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
601 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
605 #define NotSameType(T) \
606 (exprs[0]->vtype != exprs[1]->vtype || \
607 exprs[0]->vtype != T)
608 #define CanConstFold1(A) \
609 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
610 (A)->vtype != TYPE_FUNCTION)
611 #define CanConstFold(A, B) \
612 (CanConstFold1(A) && CanConstFold1(B))
613 #define ConstV(i) (asvalue[(i)]->constval.vvec)
614 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
615 #define ConstS(i) (asvalue[(i)]->constval.vstring)
619 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
623 if (exprs[0]->vtype == TYPE_VECTOR &&
624 exprs[1]->vtype == TYPE_NOEXPR)
626 if (exprs[1] == (ast_expression*)parser->const_vec[0])
627 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
628 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
629 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
630 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
631 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
633 compile_error(ctx, "access to invalid vector component");
637 else if (exprs[0]->vtype == TYPE_ENTITY) {
638 if (exprs[1]->vtype != TYPE_FIELD) {
639 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
642 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
644 else if (exprs[0]->vtype == TYPE_VECTOR) {
645 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
649 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
655 if (exprs[0]->vtype != TYPE_ARRAY &&
656 !(exprs[0]->vtype == TYPE_FIELD &&
657 exprs[0]->next->vtype == TYPE_ARRAY))
659 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
660 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
663 if (exprs[1]->vtype != TYPE_FLOAT) {
664 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
665 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
668 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
669 if (rotate_entfield_array_index_nodes(&out))
672 /* This is not broken in fteqcc anymore */
673 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
674 /* this error doesn't need to make us bail out */
675 (void)!parsewarning(parser, WARN_EXTENSIONS,
676 "accessing array-field members of an entity without parenthesis\n"
677 " -> this is an extension from -std=gmqcc");
684 if (vec_size(sy->paren) && vec_last(sy->paren) == PAREN_FUNC) {
685 vec_push(sy->out, syexp(ctx, exprs[0]));
686 vec_push(sy->out, syexp(ctx, exprs[1]));
687 vec_last(sy->argc)++;
691 if (!ast_block_add_expr(blocks[0], exprs[1]))
694 blocks[0] = ast_block_new(ctx);
695 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
696 !ast_block_add_expr(blocks[0], exprs[1]))
701 ast_block_set_type(blocks[0], exprs[1]);
703 vec_push(sy->out, syblock(ctx, blocks[0]));
710 switch (exprs[0]->vtype) {
712 if (CanConstFold1(exprs[0]))
713 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
715 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
716 (ast_expression*)parser_const_float_0(parser),
720 if (CanConstFold1(exprs[0]))
721 out = (ast_expression*)parser_const_vector_f(parser,
722 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
724 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
725 (ast_expression*)parser_const_vector_0(parser),
729 compile_error(ctx, "invalid types used in expression: cannot negate type %s",
730 type_name[exprs[0]->vtype]);
736 switch (exprs[0]->vtype) {
738 if (CanConstFold1(exprs[0]))
739 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
741 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
744 if (CanConstFold1(exprs[0]))
745 out = (ast_expression*)parser_const_float(parser,
746 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
748 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
751 if (CanConstFold1(exprs[0])) {
752 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
753 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
755 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
757 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
758 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
760 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
763 /* we don't constant-fold NOT for these types */
765 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
768 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
771 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
772 type_name[exprs[0]->vtype]);
778 if (exprs[0]->vtype != exprs[1]->vtype ||
779 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
781 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
782 type_name[exprs[0]->vtype],
783 type_name[exprs[1]->vtype]);
786 switch (exprs[0]->vtype) {
788 if (CanConstFold(exprs[0], exprs[1]))
790 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
793 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
796 if (CanConstFold(exprs[0], exprs[1]))
797 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
799 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
802 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
803 type_name[exprs[0]->vtype],
804 type_name[exprs[1]->vtype]);
809 if (exprs[0]->vtype != exprs[1]->vtype ||
810 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
812 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
813 type_name[exprs[1]->vtype],
814 type_name[exprs[0]->vtype]);
817 switch (exprs[0]->vtype) {
819 if (CanConstFold(exprs[0], exprs[1]))
820 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
822 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
825 if (CanConstFold(exprs[0], exprs[1]))
826 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
828 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
831 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
832 type_name[exprs[1]->vtype],
833 type_name[exprs[0]->vtype]);
838 if (exprs[0]->vtype != exprs[1]->vtype &&
839 !(exprs[0]->vtype == TYPE_VECTOR &&
840 exprs[1]->vtype == TYPE_FLOAT) &&
841 !(exprs[1]->vtype == TYPE_VECTOR &&
842 exprs[0]->vtype == TYPE_FLOAT)
845 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
846 type_name[exprs[1]->vtype],
847 type_name[exprs[0]->vtype]);
850 switch (exprs[0]->vtype) {
852 if (exprs[1]->vtype == TYPE_VECTOR)
854 if (CanConstFold(exprs[0], exprs[1]))
855 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
857 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
861 if (CanConstFold(exprs[0], exprs[1]))
862 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
864 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
868 if (exprs[1]->vtype == TYPE_FLOAT)
870 if (CanConstFold(exprs[0], exprs[1]))
871 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
873 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
877 if (CanConstFold(exprs[0], exprs[1]))
878 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
879 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[0])) {
880 vector vec = ConstV(0);
881 if (!vec.y && !vec.z) { /* 'n 0 0' * v */
882 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
883 out = (ast_expression*)ast_member_new(ctx, exprs[1], 0, NULL);
884 out->node.keep = false;
885 ((ast_member*)out)->rvalue = true;
887 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.x), out);
889 else if (!vec.x && !vec.z) { /* '0 n 0' * v */
890 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
891 out = (ast_expression*)ast_member_new(ctx, exprs[1], 1, NULL);
892 out->node.keep = false;
893 ((ast_member*)out)->rvalue = true;
895 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.y), out);
897 else if (!vec.x && !vec.y) { /* '0 n 0' * v */
898 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
899 out = (ast_expression*)ast_member_new(ctx, exprs[1], 2, NULL);
900 out->node.keep = false;
901 ((ast_member*)out)->rvalue = true;
903 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.z), out);
906 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
908 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[1])) {
909 vector vec = ConstV(1);
910 if (!vec.y && !vec.z) { /* v * 'n 0 0' */
911 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
912 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
913 out->node.keep = false;
914 ((ast_member*)out)->rvalue = true;
916 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.x));
918 else if (!vec.x && !vec.z) { /* v * '0 n 0' */
919 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
920 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
921 out->node.keep = false;
922 ((ast_member*)out)->rvalue = true;
924 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.y));
926 else if (!vec.x && !vec.y) { /* v * '0 n 0' */
927 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
928 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
929 out->node.keep = false;
930 ((ast_member*)out)->rvalue = true;
932 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.z));
935 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
938 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
942 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
943 type_name[exprs[1]->vtype],
944 type_name[exprs[0]->vtype]);
949 if (exprs[1]->vtype != TYPE_FLOAT) {
950 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
951 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
952 compile_error(ctx, "invalid types used in expression: cannot divide tyeps %s and %s", ty1, ty2);
955 if (exprs[0]->vtype == TYPE_FLOAT) {
956 if (CanConstFold(exprs[0], exprs[1]))
957 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
959 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
961 else if (exprs[0]->vtype == TYPE_VECTOR) {
962 if (CanConstFold(exprs[0], exprs[1]))
963 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), 1.0/ConstF(1)));
965 if (CanConstFold1(exprs[1])) {
966 out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
968 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
969 (ast_expression*)parser_const_float_1(parser),
973 compile_error(ctx, "internal error: failed to generate division");
976 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], out);
981 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
982 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
983 compile_error(ctx, "invalid types used in expression: cannot divide tyeps %s and %s", ty1, ty2);
989 if (NotSameType(TYPE_FLOAT)) {
990 compile_error(ctx, "invalid types used in expression: cannot perform modulo operation between types %s and %s",
991 type_name[exprs[0]->vtype],
992 type_name[exprs[1]->vtype]);
995 if (CanConstFold(exprs[0], exprs[1])) {
996 out = (ast_expression*)parser_const_float(parser,
997 (float)(((qcint)ConstF(0)) % ((qcint)ConstF(1))));
999 /* generate a call to __builtin_mod */
1000 ast_expression *mod = intrin_func(parser, "mod");
1001 ast_call *call = NULL;
1002 if (!mod) return false; /* can return null for missing floor */
1004 call = ast_call_new(parser_ctx(parser), mod);
1005 vec_push(call->params, exprs[0]);
1006 vec_push(call->params, exprs[1]);
1008 out = (ast_expression*)call;
1012 case opid2('%','='):
1013 compile_error(ctx, "%= is unimplemented");
1018 if (NotSameType(TYPE_FLOAT)) {
1019 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
1020 type_name[exprs[0]->vtype],
1021 type_name[exprs[1]->vtype]);
1024 if (CanConstFold(exprs[0], exprs[1]))
1025 out = (ast_expression*)parser_const_float(parser,
1026 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
1027 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
1029 out = (ast_expression*)ast_binary_new(ctx,
1030 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
1031 exprs[0], exprs[1]);
1035 * Okay lets designate what the hell is an acceptable use
1036 * of the ^ operator. In many vector processing units, XOR
1037 * is allowed to be used on vectors, but only if the first
1038 * operand is a vector, the second operand can be a float
1039 * or vector. It's never legal for the first operand to be
1040 * a float, and then the following operand to be a vector.
1041 * Further more, the only time it is legal to do XOR otherwise
1042 * is when both operand are floats. This nicely crafted if
1043 * statement catches them all.
1045 * In the event that the first operand is a vector, two
1046 * possible situations can arise, thus, each element of
1047 * vector A (operand A) is exclusive-ORed with the corresponding
1048 * element of vector B (operand B), If B is scalar, the
1049 * scalar value is first replicated for each element.
1051 * The QCVM itself lacks a BITXOR instruction. Thus emulating
1052 * the mathematics of it is required. The following equation
1053 * is used: (LHS | RHS) & ~(LHS & RHS). However, due to the
1054 * QCVM also lacking a BITNEG instruction, we need to emulate
1055 * ~FOO with -1 - FOO, the whole process becoming this nicely
1056 * crafted expression: (LHS | RHS) & (-1 - (LHS & RHS)).
1058 * When A is not scalar, this process is repeated for all
1059 * components of vector A with the value in operand B,
1060 * only if operand B is scalar. When A is not scalar, and B
1061 * is also not scalar, this process is repeated for all
1062 * components of the vector A with the components of vector B.
1063 * Finally when A is scalar and B is scalar, this process is
1064 * simply used once for A and B being LHS and RHS respectfully.
1066 * Yes the semantics are a bit strange (no pun intended).
1067 * But then again BITXOR is strange itself, consdering it's
1068 * commutative, assocative, and elements of the BITXOR operation
1069 * are their own inverse.
1071 if ( !(exprs[0]->vtype == TYPE_FLOAT && exprs[1]->vtype == TYPE_FLOAT) &&
1072 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_FLOAT) &&
1073 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_VECTOR))
1075 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
1076 type_name[exprs[0]->vtype],
1077 type_name[exprs[1]->vtype]);
1082 * IF the first expression is float, the following will be too
1083 * since scalar ^ vector is not allowed.
1085 if (exprs[0]->vtype == TYPE_FLOAT) {
1086 if(CanConstFold(exprs[0], exprs[1])) {
1087 out = (ast_expression*)parser_const_float(parser, (float)((qcint)(ConstF(0)) ^ ((qcint)(ConstF(1)))));
1089 ast_binary *expr = ast_binary_new(
1092 (ast_expression*)parser_const_float_neg1(parser),
1093 (ast_expression*)ast_binary_new(
1100 expr->refs = AST_REF_NONE;
1102 out = (ast_expression*)
1106 (ast_expression*)ast_binary_new(
1112 (ast_expression*)expr
1117 * The first is a vector: vector is allowed to xor with vector and
1118 * with scalar, branch here for the second operand.
1120 if (exprs[1]->vtype == TYPE_VECTOR) {
1122 * Xor all the values of the vector components against the
1123 * vectors components in question.
1125 if (CanConstFold(exprs[0], exprs[1])) {
1126 out = (ast_expression*)parser_const_vector_f(
1128 (float)(((qcint)(ConstV(0).x)) ^ ((qcint)(ConstV(1).x))),
1129 (float)(((qcint)(ConstV(0).y)) ^ ((qcint)(ConstV(1).y))),
1130 (float)(((qcint)(ConstV(0).z)) ^ ((qcint)(ConstV(1).z)))
1133 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor for vector against vector");
1138 * Xor all the values of the vector components against the
1139 * scalar in question.
1141 if (CanConstFold(exprs[0], exprs[1])) {
1142 out = (ast_expression*)parser_const_vector_f(
1144 (float)(((qcint)(ConstV(0).x)) ^ ((qcint)(ConstF(1)))),
1145 (float)(((qcint)(ConstV(0).y)) ^ ((qcint)(ConstF(1)))),
1146 (float)(((qcint)(ConstV(0).z)) ^ ((qcint)(ConstF(1))))
1149 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor for vector against float");
1157 case opid2('<','<'):
1158 case opid2('>','>'):
1159 if (CanConstFold(exprs[0], exprs[1]) && ! NotSameType(TYPE_FLOAT)) {
1160 if (op->id == opid2('<','<'))
1161 out = (ast_expression*)parser_const_float(parser, (double)((unsigned int)(ConstF(0)) << (unsigned int)(ConstF(1))));
1163 out = (ast_expression*)parser_const_float(parser, (double)((unsigned int)(ConstF(0)) >> (unsigned int)(ConstF(1))));
1166 case opid3('<','<','='):
1167 case opid3('>','>','='):
1168 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
1171 case opid2('|','|'):
1172 generated_op += 1; /* INSTR_OR */
1173 case opid2('&','&'):
1174 generated_op += INSTR_AND;
1175 if (CanConstFold(exprs[0], exprs[1]))
1177 if (OPTS_FLAG(PERL_LOGIC)) {
1178 if (immediate_is_true(ctx, asvalue[0]))
1182 out = (ast_expression*)parser_const_float(parser,
1183 ( (generated_op == INSTR_OR)
1184 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
1185 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
1190 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
1191 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1192 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1193 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
1196 for (i = 0; i < 2; ++i) {
1197 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->vtype == TYPE_VECTOR) {
1198 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
1200 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1202 exprs[i] = out; out = NULL;
1203 if (OPTS_FLAG(PERL_LOGIC)) {
1204 /* here we want to keep the right expressions' type */
1208 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->vtype == TYPE_STRING) {
1209 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
1211 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1213 exprs[i] = out; out = NULL;
1214 if (OPTS_FLAG(PERL_LOGIC)) {
1215 /* here we want to keep the right expressions' type */
1220 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1224 case opid2('?',':'):
1225 if (vec_last(sy->paren) != PAREN_TERNARY2) {
1226 compile_error(ctx, "mismatched parenthesis/ternary");
1230 if (!ast_compare_type(exprs[1], exprs[2])) {
1231 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
1232 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
1233 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
1236 if (CanConstFold1(exprs[0]))
1237 out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
1239 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
1242 case opid2('*', '*'):
1243 if (NotSameType(TYPE_FLOAT)) {
1244 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1245 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1246 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
1252 if (CanConstFold(exprs[0], exprs[1])) {
1253 out = (ast_expression*)parser_const_float(parser, powf(ConstF(0), ConstF(1)));
1255 ast_call *gencall = ast_call_new(parser_ctx(parser), intrin_func(parser, "pow"));
1256 vec_push(gencall->params, exprs[0]);
1257 vec_push(gencall->params, exprs[1]);
1258 out = (ast_expression*)gencall;
1262 case opid3('<','=','>'): /* -1, 0, or 1 */
1263 if (NotSameType(TYPE_FLOAT)) {
1264 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1265 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1266 compile_error(ctx, "invalid types used in comparision: %s and %s",
1272 if (CanConstFold(exprs[0], exprs[1])) {
1273 if (ConstF(0) < ConstF(1))
1274 out = (ast_expression*)parser_const_float_neg1(parser);
1275 else if (ConstF(0) == ConstF(1))
1276 out = (ast_expression*)parser_const_float_0(parser);
1277 else if (ConstF(0) > ConstF(1))
1278 out = (ast_expression*)parser_const_float_1(parser);
1280 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
1282 eq->refs = AST_REF_NONE;
1285 out = (ast_expression*)ast_ternary_new(ctx,
1286 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
1288 (ast_expression*)parser_const_float_neg1(parser),
1291 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
1293 (ast_expression*)parser_const_float_0(parser),
1296 (ast_expression*)parser_const_float_1(parser)
1306 generated_op += 1; /* INSTR_GT */
1308 generated_op += 1; /* INSTR_LT */
1309 case opid2('>', '='):
1310 generated_op += 1; /* INSTR_GE */
1311 case opid2('<', '='):
1312 generated_op += INSTR_LE;
1313 if (NotSameType(TYPE_FLOAT)) {
1314 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1315 type_name[exprs[0]->vtype],
1316 type_name[exprs[1]->vtype]);
1319 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1321 case opid2('!', '='):
1322 if (exprs[0]->vtype != exprs[1]->vtype) {
1323 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1324 type_name[exprs[0]->vtype],
1325 type_name[exprs[1]->vtype]);
1328 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->vtype], exprs[0], exprs[1]);
1330 case opid2('=', '='):
1331 if (exprs[0]->vtype != exprs[1]->vtype) {
1332 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1333 type_name[exprs[0]->vtype],
1334 type_name[exprs[1]->vtype]);
1337 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->vtype], exprs[0], exprs[1]);
1341 if (ast_istype(exprs[0], ast_entfield)) {
1342 ast_expression *field = ((ast_entfield*)exprs[0])->field;
1343 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1344 exprs[0]->vtype == TYPE_FIELD &&
1345 exprs[0]->next->vtype == TYPE_VECTOR)
1347 assignop = type_storep_instr[TYPE_VECTOR];
1350 assignop = type_storep_instr[exprs[0]->vtype];
1351 if (assignop == VINSTR_END || !ast_compare_type(field->next, exprs[1]))
1353 ast_type_to_string(field->next, ty1, sizeof(ty1));
1354 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1355 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1356 field->next->vtype == TYPE_FUNCTION &&
1357 exprs[1]->vtype == TYPE_FUNCTION)
1359 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1360 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1363 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1368 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1369 exprs[0]->vtype == TYPE_FIELD &&
1370 exprs[0]->next->vtype == TYPE_VECTOR)
1372 assignop = type_store_instr[TYPE_VECTOR];
1375 assignop = type_store_instr[exprs[0]->vtype];
1378 if (assignop == VINSTR_END) {
1379 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1380 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1381 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1383 else if (!ast_compare_type(exprs[0], exprs[1]))
1385 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1386 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1387 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1388 exprs[0]->vtype == TYPE_FUNCTION &&
1389 exprs[1]->vtype == TYPE_FUNCTION)
1391 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1392 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1395 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1398 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1399 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1401 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1403 case opid3('+','+','P'):
1404 case opid3('-','-','P'):
1406 if (exprs[0]->vtype != TYPE_FLOAT) {
1407 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1408 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
1411 if (op->id == opid3('+','+','P'))
1412 addop = INSTR_ADD_F;
1414 addop = INSTR_SUB_F;
1415 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1416 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1418 if (ast_istype(exprs[0], ast_entfield)) {
1419 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1421 (ast_expression*)parser_const_float_1(parser));
1423 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1425 (ast_expression*)parser_const_float_1(parser));
1428 case opid3('S','+','+'):
1429 case opid3('S','-','-'):
1431 if (exprs[0]->vtype != TYPE_FLOAT) {
1432 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1433 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
1436 if (op->id == opid3('S','+','+')) {
1437 addop = INSTR_ADD_F;
1438 subop = INSTR_SUB_F;
1440 addop = INSTR_SUB_F;
1441 subop = INSTR_ADD_F;
1443 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1444 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1446 if (ast_istype(exprs[0], ast_entfield)) {
1447 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1449 (ast_expression*)parser_const_float_1(parser));
1451 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1453 (ast_expression*)parser_const_float_1(parser));
1457 out = (ast_expression*)ast_binary_new(ctx, subop,
1459 (ast_expression*)parser_const_float_1(parser));
1461 case opid2('+','='):
1462 case opid2('-','='):
1463 if (exprs[0]->vtype != exprs[1]->vtype ||
1464 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
1466 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1467 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1468 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1472 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1473 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1475 if (ast_istype(exprs[0], ast_entfield))
1476 assignop = type_storep_instr[exprs[0]->vtype];
1478 assignop = type_store_instr[exprs[0]->vtype];
1479 switch (exprs[0]->vtype) {
1481 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1482 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1483 exprs[0], exprs[1]);
1486 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1487 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1488 exprs[0], exprs[1]);
1491 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1492 type_name[exprs[0]->vtype],
1493 type_name[exprs[1]->vtype]);
1497 case opid2('*','='):
1498 case opid2('/','='):
1499 if (exprs[1]->vtype != TYPE_FLOAT ||
1500 !(exprs[0]->vtype == TYPE_FLOAT ||
1501 exprs[0]->vtype == TYPE_VECTOR))
1503 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1504 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1505 compile_error(ctx, "invalid types used in expression: %s and %s",
1509 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1510 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1512 if (ast_istype(exprs[0], ast_entfield))
1513 assignop = type_storep_instr[exprs[0]->vtype];
1515 assignop = type_store_instr[exprs[0]->vtype];
1516 switch (exprs[0]->vtype) {
1518 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1519 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1520 exprs[0], exprs[1]);
1523 if (op->id == opid2('*','=')) {
1524 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1525 exprs[0], exprs[1]);
1527 /* there's no DIV_VF */
1528 if (CanConstFold1(exprs[1])) {
1529 out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
1531 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1532 (ast_expression*)parser_const_float_1(parser),
1536 compile_error(ctx, "internal error: failed to generate division");
1539 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1544 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1545 type_name[exprs[0]->vtype],
1546 type_name[exprs[1]->vtype]);
1550 case opid2('&','='):
1551 case opid2('|','='):
1552 if (NotSameType(TYPE_FLOAT)) {
1553 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1554 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1555 compile_error(ctx, "invalid types used in expression: %s and %s",
1559 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1560 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1562 if (ast_istype(exprs[0], ast_entfield))
1563 assignop = type_storep_instr[exprs[0]->vtype];
1565 assignop = type_store_instr[exprs[0]->vtype];
1566 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1567 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1568 exprs[0], exprs[1]);
1570 case opid3('&','~','='):
1571 /* This is like: a &= ~(b);
1572 * But QC has no bitwise-not, so we implement it as
1575 if (NotSameType(TYPE_FLOAT)) {
1576 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1577 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1578 compile_error(ctx, "invalid types used in expression: %s and %s",
1582 if (ast_istype(exprs[0], ast_entfield))
1583 assignop = type_storep_instr[exprs[0]->vtype];
1585 assignop = type_store_instr[exprs[0]->vtype];
1586 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1589 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1590 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1592 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1593 asbinstore->keep_dest = true;
1594 out = (ast_expression*)asbinstore;
1597 case opid2('~', 'P'):
1598 if (exprs[0]->vtype != TYPE_FLOAT) {
1599 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1600 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1604 if(CanConstFold1(exprs[0]))
1605 out = (ast_expression*)parser_const_float(parser, ~(qcint)ConstF(0));
1607 out = (ast_expression*)
1608 ast_binary_new(ctx, INSTR_SUB_F, (ast_expression*)parser_const_float_neg1(parser), exprs[0]);
1614 compile_error(ctx, "failed to apply operator %s", op->op);
1618 vec_push(sy->out, syexp(ctx, out));
1622 static bool parser_close_call(parser_t *parser, shunt *sy)
1624 /* was a function call */
1625 ast_expression *fun;
1626 ast_value *funval = NULL;
1630 size_t paramcount, i;
1632 fid = vec_last(sy->ops).off;
1633 vec_shrinkby(sy->ops, 1);
1635 /* out[fid] is the function
1636 * everything above is parameters...
1638 if (!vec_size(sy->argc)) {
1639 parseerror(parser, "internal error: no argument counter available");
1643 paramcount = vec_last(sy->argc);
1646 if (vec_size(sy->out) < fid) {
1647 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1648 (unsigned long)vec_size(sy->out),
1650 (unsigned long)paramcount);
1654 fun = sy->out[fid].out;
1656 if (fun == intrinsic_debug_typestring) {
1658 if (fid+2 != vec_size(sy->out) ||
1659 vec_last(sy->out).block)
1661 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1664 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1665 ast_unref(vec_last(sy->out).out);
1666 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1667 (ast_expression*)parser_const_string(parser, ty, false));
1668 vec_shrinkby(sy->out, 1);
1672 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1676 if (fid+1 < vec_size(sy->out))
1679 if (fid+1 + paramcount != vec_size(sy->out)) {
1680 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1681 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1685 for (i = 0; i < paramcount; ++i)
1686 vec_push(call->params, sy->out[fid+1 + i].out);
1687 vec_shrinkby(sy->out, paramcount);
1688 (void)!ast_call_check_types(call, parser->function->vtype->expression.varparam);
1689 if (parser->max_param_count < paramcount)
1690 parser->max_param_count = paramcount;
1692 if (ast_istype(fun, ast_value)) {
1693 funval = (ast_value*)fun;
1694 if ((fun->flags & AST_FLAG_VARIADIC) &&
1695 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1697 call->va_count = (ast_expression*)parser_const_float(parser, (double)paramcount);
1701 /* overwrite fid, the function, with a call */
1702 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1704 if (fun->vtype != TYPE_FUNCTION) {
1705 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1710 parseerror(parser, "could not determine function return type");
1713 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1715 if (fun->flags & AST_FLAG_DEPRECATED) {
1717 return !parsewarning(parser, WARN_DEPRECATED,
1718 "call to function (which is marked deprecated)\n",
1719 "-> it has been declared here: %s:%i",
1720 ast_ctx(fun).file, ast_ctx(fun).line);
1723 return !parsewarning(parser, WARN_DEPRECATED,
1724 "call to `%s` (which is marked deprecated)\n"
1725 "-> `%s` declared here: %s:%i",
1726 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1728 return !parsewarning(parser, WARN_DEPRECATED,
1729 "call to `%s` (deprecated: %s)\n"
1730 "-> `%s` declared here: %s:%i",
1731 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1735 if (vec_size(fun->params) != paramcount &&
1736 !((fun->flags & AST_FLAG_VARIADIC) &&
1737 vec_size(fun->params) < paramcount))
1739 const char *fewmany = (vec_size(fun->params) > paramcount) ? "few" : "many";
1741 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1742 "too %s parameters for call to %s: expected %i, got %i\n"
1743 " -> `%s` has been declared here: %s:%i",
1744 fewmany, fval->name, (int)vec_size(fun->params), (int)paramcount,
1745 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1747 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1748 "too %s parameters for function call: expected %i, got %i\n"
1749 " -> it has been declared here: %s:%i",
1750 fewmany, (int)vec_size(fun->params), (int)paramcount,
1751 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1758 static bool parser_close_paren(parser_t *parser, shunt *sy)
1760 if (!vec_size(sy->ops)) {
1761 parseerror(parser, "unmatched closing paren");
1765 while (vec_size(sy->ops)) {
1766 if (vec_last(sy->ops).isparen) {
1767 if (vec_last(sy->paren) == PAREN_FUNC) {
1769 if (!parser_close_call(parser, sy))
1773 if (vec_last(sy->paren) == PAREN_EXPR) {
1775 if (!vec_size(sy->out)) {
1776 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1777 vec_shrinkby(sy->ops, 1);
1780 vec_shrinkby(sy->ops, 1);
1783 if (vec_last(sy->paren) == PAREN_INDEX) {
1785 /* pop off the parenthesis */
1786 vec_shrinkby(sy->ops, 1);
1787 /* then apply the index operator */
1788 if (!parser_sy_apply_operator(parser, sy))
1792 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1793 vec_last(sy->paren) = PAREN_TERNARY2;
1794 /* pop off the parenthesis */
1795 vec_shrinkby(sy->ops, 1);
1798 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1801 if (!parser_sy_apply_operator(parser, sy))
1807 static void parser_reclassify_token(parser_t *parser)
1810 if (parser->tok >= TOKEN_START)
1812 for (i = 0; i < operator_count; ++i) {
1813 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1814 parser->tok = TOKEN_OPERATOR;
1820 static ast_expression* parse_vararg_do(parser_t *parser)
1822 ast_expression *idx, *out;
1824 ast_value *funtype = parser->function->vtype;
1825 lex_ctx ctx = parser_ctx(parser);
1827 if (!parser->function->varargs) {
1828 parseerror(parser, "function has no variable argument list");
1832 if (!parser_next(parser) || parser->tok != '(') {
1833 parseerror(parser, "expected parameter index and type in parenthesis");
1836 if (!parser_next(parser)) {
1837 parseerror(parser, "error parsing parameter index");
1841 idx = parse_expression_leave(parser, true, false, false);
1845 if (parser->tok != ',') {
1846 if (parser->tok != ')') {
1848 parseerror(parser, "expected comma after parameter index");
1851 /* vararg piping: ...(start) */
1852 out = (ast_expression*)ast_argpipe_new(ctx, idx);
1856 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1858 parseerror(parser, "expected typename for vararg");
1862 typevar = parse_typename(parser, NULL, NULL);
1868 if (parser->tok != ')') {
1870 ast_delete(typevar);
1871 parseerror(parser, "expected closing paren");
1875 if (funtype->expression.varparam &&
1876 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1880 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1881 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1882 compile_error(ast_ctx(typevar),
1883 "function was declared to take varargs of type `%s`, requested type is: %s",
1887 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1888 ast_type_adopt(out, typevar);
1889 ast_delete(typevar);
1893 static ast_expression* parse_vararg(parser_t *parser)
1895 bool old_noops = parser->lex->flags.noops;
1897 ast_expression *out;
1899 parser->lex->flags.noops = true;
1900 out = parse_vararg_do(parser);
1902 parser->lex->flags.noops = old_noops;
1906 /* not to be exposed */
1907 extern bool ftepp_predef_exists(const char *name);
1909 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1911 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1912 parser->tok == TOKEN_IDENT &&
1913 !strcmp(parser_tokval(parser), "_"))
1915 /* a translatable string */
1918 parser->lex->flags.noops = true;
1919 if (!parser_next(parser) || parser->tok != '(') {
1920 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1923 parser->lex->flags.noops = false;
1924 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1925 parseerror(parser, "expected a constant string in translatable-string extension");
1928 val = parser_const_string(parser, parser_tokval(parser), true);
1931 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1933 if (!parser_next(parser) || parser->tok != ')') {
1934 parseerror(parser, "expected closing paren after translatable string");
1939 else if (parser->tok == TOKEN_DOTS)
1942 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1943 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1946 va = parse_vararg(parser);
1949 vec_push(sy->out, syexp(parser_ctx(parser), va));
1952 else if (parser->tok == TOKEN_FLOATCONST) {
1954 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1957 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1960 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1962 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1965 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1968 else if (parser->tok == TOKEN_STRINGCONST) {
1970 val = parser_const_string(parser, parser_tokval(parser), false);
1973 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1976 else if (parser->tok == TOKEN_VECTORCONST) {
1978 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1981 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1984 else if (parser->tok == TOKEN_IDENT)
1986 const char *ctoken = parser_tokval(parser);
1987 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1988 ast_expression *var;
1989 /* a_vector.{x,y,z} */
1990 if (!vec_size(sy->ops) ||
1991 !vec_last(sy->ops).etype ||
1992 operators[vec_last(sy->ops).etype-1].id != opid1('.') ||
1993 (prev >= intrinsic_debug_typestring &&
1994 prev <= intrinsic_debug_typestring))
1996 /* When adding more intrinsics, fix the above condition */
1999 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
2001 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
2003 var = parser_find_var(parser, parser_tokval(parser));
2005 var = parser_find_field(parser, parser_tokval(parser));
2007 if (!var && with_labels) {
2008 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
2010 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
2011 var = (ast_expression*)lbl;
2012 vec_push(parser->labels, lbl);
2015 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
2016 var = (ast_expression*)parser_const_string(parser, parser->function->name, false);
2019 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
2020 var = (ast_expression*)intrinsic_debug_typestring;
2022 /* now we try for the real intrinsic hashtable. If the string
2023 * begins with __builtin, we simply skip past it, otherwise we
2024 * use the identifier as is.
2026 else if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
2027 var = intrin_func(parser, parser_tokval(parser) + 10 /* skip __builtin */);
2031 char *correct = NULL;
2035 * sometimes people use preprocessing predefs without enabling them
2036 * i've done this thousands of times already myself. Lets check for
2037 * it in the predef table. And diagnose it better :)
2039 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
2040 parseerror(parser, "unexpected identifier: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
2045 * TODO: determine the best score for the identifier: be it
2046 * a variable, a field.
2048 * We should also consider adding correction tables for
2049 * other things as well.
2051 if (OPTS_OPTION_BOOL(OPTION_CORRECTION) && strlen(parser_tokval(parser)) <= 16) {
2053 correct_init(&corr);
2055 for (i = 0; i < vec_size(parser->correct_variables); i++) {
2056 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
2057 if (strcmp(correct, parser_tokval(parser))) {
2064 correct_free(&corr);
2067 parseerror(parser, "unexpected identifier: %s (did you mean %s?)", parser_tokval(parser), correct);
2072 parseerror(parser, "unexpected identifier: %s", parser_tokval(parser));
2078 if (ast_istype(var, ast_value)) {
2079 ((ast_value*)var)->uses++;
2081 else if (ast_istype(var, ast_member)) {
2082 ast_member *mem = (ast_member*)var;
2083 if (ast_istype(mem->owner, ast_value))
2084 ((ast_value*)(mem->owner))->uses++;
2087 vec_push(sy->out, syexp(parser_ctx(parser), var));
2090 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
2094 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
2096 ast_expression *expr = NULL;
2099 bool wantop = false;
2100 /* only warn once about an assignment in a truth value because the current code
2101 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
2103 bool warn_truthvalue = true;
2105 /* count the parens because an if starts with one, so the
2106 * end of a condition is an unmatched closing paren
2110 memset(&sy, 0, sizeof(sy));
2112 parser->lex->flags.noops = false;
2114 parser_reclassify_token(parser);
2118 if (parser->tok == TOKEN_TYPENAME) {
2119 parseerror(parser, "unexpected typename `%s`", parser_tokval(parser));
2123 if (parser->tok == TOKEN_OPERATOR)
2125 /* classify the operator */
2126 const oper_info *op;
2127 const oper_info *olast = NULL;
2129 for (o = 0; o < operator_count; ++o) {
2130 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
2131 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
2132 !strcmp(parser_tokval(parser), operators[o].op))
2137 if (o == operator_count) {
2138 compile_error(parser_ctx(parser), "unknown operator: %s", parser_tokval(parser));
2141 /* found an operator */
2144 /* when declaring variables, a comma starts a new variable */
2145 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
2146 /* fixup the token */
2151 /* a colon without a pervious question mark cannot be a ternary */
2152 if (!ternaries && op->id == opid2(':','?')) {
2157 if (op->id == opid1(',')) {
2158 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2159 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
2163 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2164 olast = &operators[vec_last(sy.ops).etype-1];
2166 #define IsAssignOp(x) (\
2167 (x) == opid1('=') || \
2168 (x) == opid2('+','=') || \
2169 (x) == opid2('-','=') || \
2170 (x) == opid2('*','=') || \
2171 (x) == opid2('/','=') || \
2172 (x) == opid2('%','=') || \
2173 (x) == opid2('&','=') || \
2174 (x) == opid2('|','=') || \
2175 (x) == opid3('&','~','=') \
2177 if (warn_truthvalue) {
2178 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
2179 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
2180 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
2183 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
2184 warn_truthvalue = false;
2189 (op->prec < olast->prec) ||
2190 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
2192 if (!parser_sy_apply_operator(parser, &sy))
2194 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2195 olast = &operators[vec_last(sy.ops).etype-1];
2200 if (op->id == opid1('(')) {
2202 size_t sycount = vec_size(sy.out);
2203 /* we expected an operator, this is the function-call operator */
2204 vec_push(sy.paren, PAREN_FUNC);
2205 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
2206 vec_push(sy.argc, 0);
2208 vec_push(sy.paren, PAREN_EXPR);
2209 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2212 } else if (op->id == opid1('[')) {
2214 parseerror(parser, "unexpected array subscript");
2217 vec_push(sy.paren, PAREN_INDEX);
2218 /* push both the operator and the paren, this makes life easier */
2219 vec_push(sy.ops, syop(parser_ctx(parser), op));
2220 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2222 } else if (op->id == opid2('?',':')) {
2223 vec_push(sy.ops, syop(parser_ctx(parser), op));
2224 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2227 vec_push(sy.paren, PAREN_TERNARY1);
2228 } else if (op->id == opid2(':','?')) {
2229 if (!vec_size(sy.paren)) {
2230 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2233 if (vec_last(sy.paren) != PAREN_TERNARY1) {
2234 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2237 if (!parser_close_paren(parser, &sy))
2239 vec_push(sy.ops, syop(parser_ctx(parser), op));
2243 vec_push(sy.ops, syop(parser_ctx(parser), op));
2244 wantop = !!(op->flags & OP_SUFFIX);
2247 else if (parser->tok == ')') {
2248 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2249 if (!parser_sy_apply_operator(parser, &sy))
2252 if (!vec_size(sy.paren))
2255 if (vec_last(sy.paren) == PAREN_TERNARY1) {
2256 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
2259 if (!parser_close_paren(parser, &sy))
2262 /* must be a function call without parameters */
2263 if (vec_last(sy.paren) != PAREN_FUNC) {
2264 parseerror(parser, "closing paren in invalid position");
2267 if (!parser_close_paren(parser, &sy))
2272 else if (parser->tok == '(') {
2273 parseerror(parser, "internal error: '(' should be classified as operator");
2276 else if (parser->tok == '[') {
2277 parseerror(parser, "internal error: '[' should be classified as operator");
2280 else if (parser->tok == ']') {
2281 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2282 if (!parser_sy_apply_operator(parser, &sy))
2285 if (!vec_size(sy.paren))
2287 if (vec_last(sy.paren) != PAREN_INDEX) {
2288 parseerror(parser, "mismatched parentheses, unexpected ']'");
2291 if (!parser_close_paren(parser, &sy))
2296 if (!parse_sya_operand(parser, &sy, with_labels))
2299 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
2300 vec_last(sy.argc)++;
2305 /* in this case we might want to allow constant string concatenation */
2306 bool concatenated = false;
2307 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
2308 ast_expression *lexpr = vec_last(sy.out).out;
2309 if (ast_istype(lexpr, ast_value)) {
2310 ast_value *last = (ast_value*)lexpr;
2311 if (last->isimm == true && last->cvq == CV_CONST &&
2312 last->hasvalue && last->expression.vtype == TYPE_STRING)
2314 char *newstr = NULL;
2315 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
2316 vec_last(sy.out).out = (ast_expression*)parser_const_string(parser, newstr, false);
2318 concatenated = true;
2322 if (!concatenated) {
2323 parseerror(parser, "expected operator or end of statement");
2328 if (!parser_next(parser)) {
2331 if (parser->tok == ';' ||
2332 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
2333 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
2339 while (vec_size(sy.ops)) {
2340 if (!parser_sy_apply_operator(parser, &sy))
2344 parser->lex->flags.noops = true;
2345 if (vec_size(sy.out) != 1) {
2346 parseerror(parser, "expression with not 1 but %lu output values...", (unsigned long) vec_size(sy.out));
2349 expr = sy.out[0].out;
2352 if (vec_size(sy.paren)) {
2353 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
2361 parser->lex->flags.noops = true;
2362 for (i = 0; i < vec_size(sy.out); ++i) {
2364 ast_unref(sy.out[i].out);
2373 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
2375 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
2378 if (parser->tok != ';') {
2379 parseerror(parser, "semicolon expected after expression");
2383 if (!parser_next(parser)) {
2390 static void parser_enterblock(parser_t *parser)
2392 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2393 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2394 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2395 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2396 vec_push(parser->_block_ctx, parser_ctx(parser));
2399 vec_push(parser->correct_variables, correct_trie_new());
2400 vec_push(parser->correct_variables_score, NULL);
2403 static bool parser_leaveblock(parser_t *parser)
2406 size_t locals, typedefs;
2408 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2409 parseerror(parser, "internal error: parser_leaveblock with no block");
2413 util_htdel(vec_last(parser->variables));
2414 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2416 vec_pop(parser->variables);
2417 vec_pop(parser->correct_variables);
2418 vec_pop(parser->correct_variables_score);
2419 if (!vec_size(parser->_blocklocals)) {
2420 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2424 locals = vec_last(parser->_blocklocals);
2425 vec_pop(parser->_blocklocals);
2426 while (vec_size(parser->_locals) != locals) {
2427 ast_expression *e = vec_last(parser->_locals);
2428 ast_value *v = (ast_value*)e;
2429 vec_pop(parser->_locals);
2430 if (ast_istype(e, ast_value) && !v->uses) {
2431 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2436 typedefs = vec_last(parser->_blocktypedefs);
2437 while (vec_size(parser->_typedefs) != typedefs) {
2438 ast_delete(vec_last(parser->_typedefs));
2439 vec_pop(parser->_typedefs);
2441 util_htdel(vec_last(parser->typedefs));
2442 vec_pop(parser->typedefs);
2444 vec_pop(parser->_block_ctx);
2449 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2451 vec_push(parser->_locals, e);
2452 util_htset(vec_last(parser->variables), name, (void*)e);
2456 vec_last(parser->correct_variables),
2457 &vec_last(parser->correct_variables_score),
2462 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2464 vec_push(parser->globals, e);
2465 util_htset(parser->htglobals, name, e);
2469 parser->correct_variables[0],
2470 &parser->correct_variables_score[0],
2475 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2479 ast_expression *prev;
2481 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2483 ast_type_to_string(cond, ty, sizeof(ty));
2484 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2487 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2490 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2493 parseerror(parser, "internal error: failed to process condition");
2498 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2500 /* vector types need to be cast to true booleans */
2501 ast_binary *bin = (ast_binary*)cond;
2502 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2504 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2506 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2509 parseerror(parser, "internal error: failed to process condition");
2516 unary = (ast_unary*)cond;
2517 /* ast_istype dereferences cond, should test here for safety */
2518 while (cond && ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2520 cond = unary->operand;
2521 unary->operand = NULL;
2524 unary = (ast_unary*)cond;
2528 parseerror(parser, "internal error: failed to process condition");
2530 if (ifnot) *_ifnot = !*_ifnot;
2534 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2537 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2540 lex_ctx ctx = parser_ctx(parser);
2542 (void)block; /* not touching */
2544 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2545 if (!parser_next(parser)) {
2546 parseerror(parser, "expected condition or 'not'");
2549 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2551 if (!parser_next(parser)) {
2552 parseerror(parser, "expected condition in parenthesis");
2556 if (parser->tok != '(') {
2557 parseerror(parser, "expected 'if' condition in parenthesis");
2560 /* parse into the expression */
2561 if (!parser_next(parser)) {
2562 parseerror(parser, "expected 'if' condition after opening paren");
2565 /* parse the condition */
2566 cond = parse_expression_leave(parser, false, true, false);
2570 if (parser->tok != ')') {
2571 parseerror(parser, "expected closing paren after 'if' condition");
2575 /* parse into the 'then' branch */
2576 if (!parser_next(parser)) {
2577 parseerror(parser, "expected statement for on-true branch of 'if'");
2581 if (!parse_statement_or_block(parser, &ontrue)) {
2586 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2587 /* check for an else */
2588 if (!strcmp(parser_tokval(parser), "else")) {
2589 /* parse into the 'else' branch */
2590 if (!parser_next(parser)) {
2591 parseerror(parser, "expected on-false branch after 'else'");
2596 if (!parse_statement_or_block(parser, &onfalse)) {
2603 cond = process_condition(parser, cond, &ifnot);
2605 if (ontrue) ast_delete(ontrue);
2606 if (onfalse) ast_delete(onfalse);
2611 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2613 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2614 *out = (ast_expression*)ifthen;
2618 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2619 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2624 /* skip the 'while' and get the body */
2625 if (!parser_next(parser)) {
2626 if (OPTS_FLAG(LOOP_LABELS))
2627 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2629 parseerror(parser, "expected 'while' condition in parenthesis");
2633 if (parser->tok == ':') {
2634 if (!OPTS_FLAG(LOOP_LABELS))
2635 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2636 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2637 parseerror(parser, "expected loop label");
2640 label = util_strdup(parser_tokval(parser));
2641 if (!parser_next(parser)) {
2643 parseerror(parser, "expected 'while' condition in parenthesis");
2648 if (parser->tok != '(') {
2649 parseerror(parser, "expected 'while' condition in parenthesis");
2653 vec_push(parser->breaks, label);
2654 vec_push(parser->continues, label);
2656 rv = parse_while_go(parser, block, out);
2659 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2660 parseerror(parser, "internal error: label stack corrupted");
2666 vec_pop(parser->breaks);
2667 vec_pop(parser->continues);
2672 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2675 ast_expression *cond, *ontrue;
2679 lex_ctx ctx = parser_ctx(parser);
2681 (void)block; /* not touching */
2683 /* parse into the expression */
2684 if (!parser_next(parser)) {
2685 parseerror(parser, "expected 'while' condition after opening paren");
2688 /* parse the condition */
2689 cond = parse_expression_leave(parser, false, true, false);
2693 if (parser->tok != ')') {
2694 parseerror(parser, "expected closing paren after 'while' condition");
2698 /* parse into the 'then' branch */
2699 if (!parser_next(parser)) {
2700 parseerror(parser, "expected while-loop body");
2704 if (!parse_statement_or_block(parser, &ontrue)) {
2709 cond = process_condition(parser, cond, &ifnot);
2714 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2715 *out = (ast_expression*)aloop;
2719 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2720 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2725 /* skip the 'do' and get the body */
2726 if (!parser_next(parser)) {
2727 if (OPTS_FLAG(LOOP_LABELS))
2728 parseerror(parser, "expected loop label or body");
2730 parseerror(parser, "expected loop body");
2734 if (parser->tok == ':') {
2735 if (!OPTS_FLAG(LOOP_LABELS))
2736 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2737 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2738 parseerror(parser, "expected loop label");
2741 label = util_strdup(parser_tokval(parser));
2742 if (!parser_next(parser)) {
2744 parseerror(parser, "expected loop body");
2749 vec_push(parser->breaks, label);
2750 vec_push(parser->continues, label);
2752 rv = parse_dowhile_go(parser, block, out);
2755 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2756 parseerror(parser, "internal error: label stack corrupted");
2759 * Test for NULL otherwise ast_delete dereferences null pointer
2767 vec_pop(parser->breaks);
2768 vec_pop(parser->continues);
2773 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2776 ast_expression *cond, *ontrue;
2780 lex_ctx ctx = parser_ctx(parser);
2782 (void)block; /* not touching */
2784 if (!parse_statement_or_block(parser, &ontrue))
2787 /* expect the "while" */
2788 if (parser->tok != TOKEN_KEYWORD ||
2789 strcmp(parser_tokval(parser), "while"))
2791 parseerror(parser, "expected 'while' and condition");
2796 /* skip the 'while' and check for opening paren */
2797 if (!parser_next(parser) || parser->tok != '(') {
2798 parseerror(parser, "expected 'while' condition in parenthesis");
2802 /* parse into the expression */
2803 if (!parser_next(parser)) {
2804 parseerror(parser, "expected 'while' condition after opening paren");
2808 /* parse the condition */
2809 cond = parse_expression_leave(parser, false, true, false);
2813 if (parser->tok != ')') {
2814 parseerror(parser, "expected closing paren after 'while' condition");
2820 if (!parser_next(parser) || parser->tok != ';') {
2821 parseerror(parser, "expected semicolon after condition");
2827 if (!parser_next(parser)) {
2828 parseerror(parser, "parse error");
2834 cond = process_condition(parser, cond, &ifnot);
2839 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2840 *out = (ast_expression*)aloop;
2844 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2845 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2850 /* skip the 'for' and check for opening paren */
2851 if (!parser_next(parser)) {
2852 if (OPTS_FLAG(LOOP_LABELS))
2853 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2855 parseerror(parser, "expected 'for' expressions in parenthesis");
2859 if (parser->tok == ':') {
2860 if (!OPTS_FLAG(LOOP_LABELS))
2861 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2862 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2863 parseerror(parser, "expected loop label");
2866 label = util_strdup(parser_tokval(parser));
2867 if (!parser_next(parser)) {
2869 parseerror(parser, "expected 'for' expressions in parenthesis");
2874 if (parser->tok != '(') {
2875 parseerror(parser, "expected 'for' expressions in parenthesis");
2879 vec_push(parser->breaks, label);
2880 vec_push(parser->continues, label);
2882 rv = parse_for_go(parser, block, out);
2885 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2886 parseerror(parser, "internal error: label stack corrupted");
2892 vec_pop(parser->breaks);
2893 vec_pop(parser->continues);
2897 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2900 ast_expression *initexpr, *cond, *increment, *ontrue;
2905 lex_ctx ctx = parser_ctx(parser);
2907 parser_enterblock(parser);
2914 /* parse into the expression */
2915 if (!parser_next(parser)) {
2916 parseerror(parser, "expected 'for' initializer after opening paren");
2921 if (parser->tok == TOKEN_IDENT)
2922 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2924 if (typevar || parser->tok == TOKEN_TYPENAME) {
2926 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2927 if (parsewarning(parser, WARN_EXTENSIONS,
2928 "current standard does not allow variable declarations in for-loop initializers"))
2932 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2935 else if (parser->tok != ';')
2937 initexpr = parse_expression_leave(parser, false, false, false);
2942 /* move on to condition */
2943 if (parser->tok != ';') {
2944 parseerror(parser, "expected semicolon after for-loop initializer");
2947 if (!parser_next(parser)) {
2948 parseerror(parser, "expected for-loop condition");
2952 /* parse the condition */
2953 if (parser->tok != ';') {
2954 cond = parse_expression_leave(parser, false, true, false);
2959 /* move on to incrementor */
2960 if (parser->tok != ';') {
2961 parseerror(parser, "expected semicolon after for-loop initializer");
2964 if (!parser_next(parser)) {
2965 parseerror(parser, "expected for-loop condition");
2969 /* parse the incrementor */
2970 if (parser->tok != ')') {
2971 lex_ctx condctx = parser_ctx(parser);
2972 increment = parse_expression_leave(parser, false, false, false);
2975 if (!ast_side_effects(increment)) {
2976 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2982 if (parser->tok != ')') {
2983 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2986 /* parse into the 'then' branch */
2987 if (!parser_next(parser)) {
2988 parseerror(parser, "expected for-loop body");
2991 if (!parse_statement_or_block(parser, &ontrue))
2995 cond = process_condition(parser, cond, &ifnot);
2999 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
3000 *out = (ast_expression*)aloop;
3002 if (!parser_leaveblock(parser)) {
3008 if (initexpr) ast_unref(initexpr);
3009 if (cond) ast_unref(cond);
3010 if (increment) ast_unref(increment);
3011 (void)!parser_leaveblock(parser);
3015 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
3017 ast_expression *exp = NULL;
3018 ast_expression *var = NULL;
3019 ast_return *ret = NULL;
3020 ast_value *retval = parser->function->return_value;
3021 ast_value *expected = parser->function->vtype;
3023 lex_ctx ctx = parser_ctx(parser);
3025 (void)block; /* not touching */
3027 if (!parser_next(parser)) {
3028 parseerror(parser, "expected return expression");
3032 /* return assignments */
3033 if (parser->tok == '=') {
3034 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
3035 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
3039 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
3041 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
3042 parseerror(parser, "invalid return type: `%s'", ty1);
3046 if (!parser_next(parser)) {
3047 parseerror(parser, "expected return assignment expression");
3051 if (!(exp = parse_expression_leave(parser, false, false, false)))
3054 /* prepare the return value */
3056 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
3057 ast_type_adopt(retval, expected->expression.next);
3058 parser->function->return_value = retval;
3061 if (!ast_compare_type(exp, (ast_expression*)retval)) {
3062 char ty1[1024], ty2[1024];
3063 ast_type_to_string(exp, ty1, sizeof(ty1));
3064 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
3065 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
3068 /* store to 'return' local variable */
3069 var = (ast_expression*)ast_store_new(
3071 type_store_instr[expected->expression.next->vtype],
3072 (ast_expression*)retval, exp);
3079 if (parser->tok != ';')
3080 parseerror(parser, "missing semicolon after return assignment");
3081 else if (!parser_next(parser))
3082 parseerror(parser, "parse error after return assignment");
3088 if (parser->tok != ';') {
3089 exp = parse_expression(parser, false, false);
3093 if (exp->vtype != TYPE_NIL &&
3094 exp->vtype != ((ast_expression*)expected)->next->vtype)
3096 parseerror(parser, "return with invalid expression");
3099 ret = ast_return_new(ctx, exp);
3105 if (!parser_next(parser))
3106 parseerror(parser, "parse error");
3108 if (!retval && expected->expression.next->vtype != TYPE_VOID)
3110 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
3112 ret = ast_return_new(ctx, (ast_expression*)retval);
3114 *out = (ast_expression*)ret;
3118 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
3121 unsigned int levels = 0;
3122 lex_ctx ctx = parser_ctx(parser);
3123 const char **loops = (is_continue ? parser->continues : parser->breaks);
3125 (void)block; /* not touching */
3126 if (!parser_next(parser)) {
3127 parseerror(parser, "expected semicolon or loop label");
3131 if (!vec_size(loops)) {
3133 parseerror(parser, "`continue` can only be used inside loops");
3135 parseerror(parser, "`break` can only be used inside loops or switches");
3138 if (parser->tok == TOKEN_IDENT) {
3139 if (!OPTS_FLAG(LOOP_LABELS))
3140 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3141 i = vec_size(loops);
3143 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
3146 parseerror(parser, "no such loop to %s: `%s`",
3147 (is_continue ? "continue" : "break out of"),
3148 parser_tokval(parser));
3153 if (!parser_next(parser)) {
3154 parseerror(parser, "expected semicolon");
3159 if (parser->tok != ';') {
3160 parseerror(parser, "expected semicolon");
3164 if (!parser_next(parser))
3165 parseerror(parser, "parse error");
3167 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
3171 /* returns true when it was a variable qualifier, false otherwise!
3172 * on error, cvq is set to CV_WRONG
3174 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
3176 bool had_const = false;
3177 bool had_var = false;
3178 bool had_noref = false;
3179 bool had_attrib = false;
3180 bool had_static = false;
3185 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
3187 /* parse an attribute */
3188 if (!parser_next(parser)) {
3189 parseerror(parser, "expected attribute after `[[`");
3193 if (!strcmp(parser_tokval(parser), "noreturn")) {
3194 flags |= AST_FLAG_NORETURN;
3195 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3196 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
3201 else if (!strcmp(parser_tokval(parser), "noref")) {
3203 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3204 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
3209 else if (!strcmp(parser_tokval(parser), "inline")) {
3210 flags |= AST_FLAG_INLINE;
3211 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3212 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
3217 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
3218 flags |= AST_FLAG_ALIAS;
3221 if (!parser_next(parser)) {
3222 parseerror(parser, "parse error in attribute");
3226 if (parser->tok == '(') {
3227 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
3228 parseerror(parser, "`alias` attribute missing parameter");
3232 *message = util_strdup(parser_tokval(parser));
3234 if (!parser_next(parser)) {
3235 parseerror(parser, "parse error in attribute");
3239 if (parser->tok != ')') {
3240 parseerror(parser, "`alias` attribute expected `)` after parameter");
3244 if (!parser_next(parser)) {
3245 parseerror(parser, "parse error in attribute");
3250 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3251 parseerror(parser, "`alias` attribute expected `]]`");
3255 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
3256 flags |= AST_FLAG_DEPRECATED;
3259 if (!parser_next(parser)) {
3260 parseerror(parser, "parse error in attribute");
3264 if (parser->tok == '(') {
3265 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
3266 parseerror(parser, "`deprecated` attribute missing parameter");
3270 *message = util_strdup(parser_tokval(parser));
3272 if (!parser_next(parser)) {
3273 parseerror(parser, "parse error in attribute");
3277 if(parser->tok != ')') {
3278 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
3282 if (!parser_next(parser)) {
3283 parseerror(parser, "parse error in attribute");
3288 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3289 parseerror(parser, "`deprecated` attribute expected `]]`");
3292 if (*message) mem_d(*message);
3300 /* Skip tokens until we hit a ]] */
3301 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
3302 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3303 if (!parser_next(parser)) {
3304 parseerror(parser, "error inside attribute");
3311 else if (with_local && !strcmp(parser_tokval(parser), "static"))
3313 else if (!strcmp(parser_tokval(parser), "const"))
3315 else if (!strcmp(parser_tokval(parser), "var"))
3317 else if (with_local && !strcmp(parser_tokval(parser), "local"))
3319 else if (!strcmp(parser_tokval(parser), "noref"))
3321 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
3326 if (!parser_next(parser))
3336 *is_static = had_static;
3340 parseerror(parser, "parse error after variable qualifier");
3345 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
3346 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
3351 /* skip the 'while' and get the body */
3352 if (!parser_next(parser)) {
3353 if (OPTS_FLAG(LOOP_LABELS))
3354 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
3356 parseerror(parser, "expected 'switch' operand in parenthesis");
3360 if (parser->tok == ':') {
3361 if (!OPTS_FLAG(LOOP_LABELS))
3362 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3363 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3364 parseerror(parser, "expected loop label");
3367 label = util_strdup(parser_tokval(parser));
3368 if (!parser_next(parser)) {
3370 parseerror(parser, "expected 'switch' operand in parenthesis");
3375 if (parser->tok != '(') {
3376 parseerror(parser, "expected 'switch' operand in parenthesis");
3380 vec_push(parser->breaks, label);
3382 rv = parse_switch_go(parser, block, out);
3385 if (vec_last(parser->breaks) != label) {
3386 parseerror(parser, "internal error: label stack corrupted");
3392 vec_pop(parser->breaks);
3397 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3399 ast_expression *operand;
3402 ast_switch *switchnode;
3403 ast_switch_case swcase;
3406 bool noref, is_static;
3407 uint32_t qflags = 0;
3409 lex_ctx ctx = parser_ctx(parser);
3411 (void)block; /* not touching */
3414 /* parse into the expression */
3415 if (!parser_next(parser)) {
3416 parseerror(parser, "expected switch operand");
3419 /* parse the operand */
3420 operand = parse_expression_leave(parser, false, false, false);
3424 switchnode = ast_switch_new(ctx, operand);
3427 if (parser->tok != ')') {
3428 ast_delete(switchnode);
3429 parseerror(parser, "expected closing paren after 'switch' operand");
3433 /* parse over the opening paren */
3434 if (!parser_next(parser) || parser->tok != '{') {
3435 ast_delete(switchnode);
3436 parseerror(parser, "expected list of cases");
3440 if (!parser_next(parser)) {
3441 ast_delete(switchnode);
3442 parseerror(parser, "expected 'case' or 'default'");
3446 /* new block; allow some variables to be declared here */
3447 parser_enterblock(parser);
3450 if (parser->tok == TOKEN_IDENT)
3451 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3452 if (typevar || parser->tok == TOKEN_TYPENAME) {
3453 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3454 ast_delete(switchnode);
3459 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3461 if (cvq == CV_WRONG) {
3462 ast_delete(switchnode);
3465 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3466 ast_delete(switchnode);
3475 while (parser->tok != '}') {
3476 ast_block *caseblock;
3478 if (!strcmp(parser_tokval(parser), "case")) {
3479 if (!parser_next(parser)) {
3480 ast_delete(switchnode);
3481 parseerror(parser, "expected expression for case");
3484 swcase.value = parse_expression_leave(parser, false, false, false);
3485 if (!swcase.value) {
3486 ast_delete(switchnode);
3487 parseerror(parser, "expected expression for case");
3490 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3491 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3492 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3498 else if (!strcmp(parser_tokval(parser), "default")) {
3499 swcase.value = NULL;
3500 if (!parser_next(parser)) {
3501 ast_delete(switchnode);
3502 parseerror(parser, "expected colon");
3507 ast_delete(switchnode);
3508 parseerror(parser, "expected 'case' or 'default'");
3512 /* Now the colon and body */
3513 if (parser->tok != ':') {
3514 if (swcase.value) ast_unref(swcase.value);
3515 ast_delete(switchnode);
3516 parseerror(parser, "expected colon");
3520 if (!parser_next(parser)) {
3521 if (swcase.value) ast_unref(swcase.value);
3522 ast_delete(switchnode);
3523 parseerror(parser, "expected statements or case");
3526 caseblock = ast_block_new(parser_ctx(parser));
3528 if (swcase.value) ast_unref(swcase.value);
3529 ast_delete(switchnode);
3532 swcase.code = (ast_expression*)caseblock;
3533 vec_push(switchnode->cases, swcase);
3535 ast_expression *expr;
3536 if (parser->tok == '}')
3538 if (parser->tok == TOKEN_KEYWORD) {
3539 if (!strcmp(parser_tokval(parser), "case") ||
3540 !strcmp(parser_tokval(parser), "default"))
3545 if (!parse_statement(parser, caseblock, &expr, true)) {
3546 ast_delete(switchnode);
3551 if (!ast_block_add_expr(caseblock, expr)) {
3552 ast_delete(switchnode);
3558 parser_leaveblock(parser);
3561 if (parser->tok != '}') {
3562 ast_delete(switchnode);
3563 parseerror(parser, "expected closing paren of case list");
3566 if (!parser_next(parser)) {
3567 ast_delete(switchnode);
3568 parseerror(parser, "parse error after switch");
3571 *out = (ast_expression*)switchnode;
3575 /* parse computed goto sides */
3576 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3577 ast_expression *on_true;
3578 ast_expression *on_false;
3579 ast_expression *cond;
3584 if (ast_istype(*side, ast_ternary)) {
3585 ast_ternary *tern = (ast_ternary*)*side;
3586 on_true = parse_goto_computed(parser, &tern->on_true);
3587 on_false = parse_goto_computed(parser, &tern->on_false);
3589 if (!on_true || !on_false) {
3590 parseerror(parser, "expected label or expression in ternary");
3591 if (on_true) ast_unref(on_true);
3592 if (on_false) ast_unref(on_false);
3600 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3601 } else if (ast_istype(*side, ast_label)) {
3602 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3603 ast_goto_set_label(gt, ((ast_label*)*side));
3605 return (ast_expression*)gt;
3610 static bool parse_goto(parser_t *parser, ast_expression **out)
3612 ast_goto *gt = NULL;
3613 ast_expression *lbl;
3615 if (!parser_next(parser))
3618 if (parser->tok != TOKEN_IDENT) {
3619 ast_expression *expression;
3621 /* could be an expression i.e computed goto :-) */
3622 if (parser->tok != '(') {
3623 parseerror(parser, "expected label name after `goto`");
3627 /* failed to parse expression for goto */
3628 if (!(expression = parse_expression(parser, false, true)) ||
3629 !(*out = parse_goto_computed(parser, &expression))) {
3630 parseerror(parser, "invalid goto expression");
3632 ast_unref(expression);
3639 /* not computed goto */
3640 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3641 lbl = parser_find_label(parser, gt->name);
3643 if (!ast_istype(lbl, ast_label)) {
3644 parseerror(parser, "internal error: label is not an ast_label");
3648 ast_goto_set_label(gt, (ast_label*)lbl);
3651 vec_push(parser->gotos, gt);
3653 if (!parser_next(parser) || parser->tok != ';') {
3654 parseerror(parser, "semicolon expected after goto label");
3657 if (!parser_next(parser)) {
3658 parseerror(parser, "parse error after goto");
3662 *out = (ast_expression*)gt;
3666 static bool parse_skipwhite(parser_t *parser)
3669 if (!parser_next(parser))
3671 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3672 return parser->tok < TOKEN_ERROR;
3675 static bool parse_eol(parser_t *parser)
3677 if (!parse_skipwhite(parser))
3679 return parser->tok == TOKEN_EOL;
3682 static bool parse_pragma_do(parser_t *parser)
3684 if (!parser_next(parser) ||
3685 parser->tok != TOKEN_IDENT ||
3686 strcmp(parser_tokval(parser), "pragma"))
3688 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3691 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3692 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3696 if (!strcmp(parser_tokval(parser), "noref")) {
3697 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3698 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3701 parser->noref = !!parser_token(parser)->constval.i;
3702 if (!parse_eol(parser)) {
3703 parseerror(parser, "parse error after `noref` pragma");
3709 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3716 static bool parse_pragma(parser_t *parser)
3719 parser->lex->flags.preprocessing = true;
3720 parser->lex->flags.mergelines = true;
3721 rv = parse_pragma_do(parser);
3722 if (parser->tok != TOKEN_EOL) {
3723 parseerror(parser, "junk after pragma");
3726 parser->lex->flags.preprocessing = false;
3727 parser->lex->flags.mergelines = false;
3728 if (!parser_next(parser)) {
3729 parseerror(parser, "parse error after pragma");
3735 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3737 bool noref, is_static;
3739 uint32_t qflags = 0;
3740 ast_value *typevar = NULL;
3741 char *vstring = NULL;
3745 if (parser->tok == TOKEN_IDENT)
3746 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3748 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3750 /* local variable */
3752 parseerror(parser, "cannot declare a variable from here");
3755 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3756 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3759 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3763 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3765 if (cvq == CV_WRONG)
3767 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3769 else if (parser->tok == TOKEN_KEYWORD)
3771 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3776 if (!parser_next(parser)) {
3777 parseerror(parser, "parse error after __builtin_debug_printtype");
3781 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3783 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3784 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3785 if (!parser_next(parser)) {
3786 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3792 if (!parse_statement(parser, block, out, allow_cases))
3795 con_out("__builtin_debug_printtype: got no output node\n");
3798 ast_type_to_string(*out, ty, sizeof(ty));
3799 con_out("__builtin_debug_printtype: `%s`\n", ty);
3804 else if (!strcmp(parser_tokval(parser), "return"))
3806 return parse_return(parser, block, out);
3808 else if (!strcmp(parser_tokval(parser), "if"))
3810 return parse_if(parser, block, out);
3812 else if (!strcmp(parser_tokval(parser), "while"))
3814 return parse_while(parser, block, out);
3816 else if (!strcmp(parser_tokval(parser), "do"))
3818 return parse_dowhile(parser, block, out);
3820 else if (!strcmp(parser_tokval(parser), "for"))
3822 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3823 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3826 return parse_for(parser, block, out);
3828 else if (!strcmp(parser_tokval(parser), "break"))
3830 return parse_break_continue(parser, block, out, false);
3832 else if (!strcmp(parser_tokval(parser), "continue"))
3834 return parse_break_continue(parser, block, out, true);
3836 else if (!strcmp(parser_tokval(parser), "switch"))
3838 return parse_switch(parser, block, out);
3840 else if (!strcmp(parser_tokval(parser), "case") ||
3841 !strcmp(parser_tokval(parser), "default"))
3844 parseerror(parser, "unexpected 'case' label");
3849 else if (!strcmp(parser_tokval(parser), "goto"))
3851 return parse_goto(parser, out);
3853 else if (!strcmp(parser_tokval(parser), "typedef"))
3855 if (!parser_next(parser)) {
3856 parseerror(parser, "expected type definition after 'typedef'");
3859 return parse_typedef(parser);
3861 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3864 else if (parser->tok == '{')
3867 inner = parse_block(parser);
3870 *out = (ast_expression*)inner;
3873 else if (parser->tok == ':')
3877 if (!parser_next(parser)) {
3878 parseerror(parser, "expected label name");
3881 if (parser->tok != TOKEN_IDENT) {
3882 parseerror(parser, "label must be an identifier");
3885 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3887 if (!label->undefined) {
3888 parseerror(parser, "label `%s` already defined", label->name);
3891 label->undefined = false;
3894 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3895 vec_push(parser->labels, label);
3897 *out = (ast_expression*)label;
3898 if (!parser_next(parser)) {
3899 parseerror(parser, "parse error after label");
3902 for (i = 0; i < vec_size(parser->gotos); ++i) {
3903 if (!strcmp(parser->gotos[i]->name, label->name)) {
3904 ast_goto_set_label(parser->gotos[i], label);
3905 vec_remove(parser->gotos, i, 1);
3911 else if (parser->tok == ';')
3913 if (!parser_next(parser)) {
3914 parseerror(parser, "parse error after empty statement");
3921 lex_ctx ctx = parser_ctx(parser);
3922 ast_expression *exp = parse_expression(parser, false, false);
3926 if (!ast_side_effects(exp)) {
3927 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3934 static bool parse_enum(parser_t *parser)
3937 bool reverse = false;
3939 ast_value **values = NULL;
3940 ast_value *var = NULL;
3943 ast_expression *old;
3945 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3946 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3950 /* enumeration attributes (can add more later) */
3951 if (parser->tok == ':') {
3952 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3953 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3958 if (!strcmp(parser_tokval(parser), "flag")) {
3962 else if (!strcmp(parser_tokval(parser), "reverse")) {
3966 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3970 if (!parser_next(parser) || parser->tok != '{') {
3971 parseerror(parser, "expected `{` after enum attribute ");
3977 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3978 if (parser->tok == '}') {
3979 /* allow an empty enum */
3982 parseerror(parser, "expected identifier or `}`");
3986 old = parser_find_field(parser, parser_tokval(parser));
3988 old = parser_find_global(parser, parser_tokval(parser));
3990 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3991 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3995 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3996 vec_push(values, var);
3997 var->cvq = CV_CONST;
3998 var->hasvalue = true;
4000 /* for flagged enumerations increment in POTs of TWO */
4001 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
4002 parser_addglobal(parser, var->name, (ast_expression*)var);
4004 if (!parser_next(parser)) {
4005 parseerror(parser, "expected `=`, `}` or comma after identifier");
4009 if (parser->tok == ',')
4011 if (parser->tok == '}')
4013 if (parser->tok != '=') {
4014 parseerror(parser, "expected `=`, `}` or comma after identifier");
4018 if (!parser_next(parser)) {
4019 parseerror(parser, "expected expression after `=`");
4023 /* We got a value! */
4024 old = parse_expression_leave(parser, true, false, false);
4025 asvalue = (ast_value*)old;
4026 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
4027 compile_error(ast_ctx(var), "constant value or expression expected");
4030 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
4032 if (parser->tok == '}')
4034 if (parser->tok != ',') {
4035 parseerror(parser, "expected `}` or comma after expression");
4040 /* patch them all (for reversed attribute) */
4043 for (i = 0; i < vec_size(values); i++)
4044 values[i]->constval.vfloat = vec_size(values) - i - 1;
4047 if (parser->tok != '}') {
4048 parseerror(parser, "internal error: breaking without `}`");
4052 if (!parser_next(parser) || parser->tok != ';') {
4053 parseerror(parser, "expected semicolon after enumeration");
4057 if (!parser_next(parser)) {
4058 parseerror(parser, "parse error after enumeration");
4070 static bool parse_block_into(parser_t *parser, ast_block *block)
4074 parser_enterblock(parser);
4076 if (!parser_next(parser)) { /* skip the '{' */
4077 parseerror(parser, "expected function body");
4081 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4083 ast_expression *expr = NULL;
4084 if (parser->tok == '}')
4087 if (!parse_statement(parser, block, &expr, false)) {
4088 /* parseerror(parser, "parse error"); */
4094 if (!ast_block_add_expr(block, expr)) {
4101 if (parser->tok != '}') {
4104 (void)parser_next(parser);
4108 if (!parser_leaveblock(parser))
4110 return retval && !!block;
4113 static ast_block* parse_block(parser_t *parser)
4116 block = ast_block_new(parser_ctx(parser));
4119 if (!parse_block_into(parser, block)) {
4120 ast_block_delete(block);
4126 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
4128 if (parser->tok == '{') {
4129 *out = (ast_expression*)parse_block(parser);
4132 return parse_statement(parser, NULL, out, false);
4135 static bool create_vector_members(ast_value *var, ast_member **me)
4138 size_t len = strlen(var->name);
4140 for (i = 0; i < 3; ++i) {
4141 char *name = (char*)mem_a(len+3);
4142 memcpy(name, var->name, len);
4144 name[len+1] = 'x'+i;
4146 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
4155 do { ast_member_delete(me[--i]); } while(i);
4159 static bool parse_function_body(parser_t *parser, ast_value *var)
4161 ast_block *block = NULL;
4166 ast_expression *framenum = NULL;
4167 ast_expression *nextthink = NULL;
4168 /* None of the following have to be deleted */
4169 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
4170 ast_expression *gbl_time = NULL, *gbl_self = NULL;
4171 bool has_frame_think;
4175 has_frame_think = false;
4176 old = parser->function;
4178 if (var->expression.flags & AST_FLAG_ALIAS) {
4179 parseerror(parser, "function aliases cannot have bodies");
4183 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
4184 parseerror(parser, "gotos/labels leaking");
4188 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4189 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
4190 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
4196 if (parser->tok == '[') {
4197 /* got a frame definition: [ framenum, nextthink ]
4198 * this translates to:
4199 * self.frame = framenum;
4200 * self.nextthink = time + 0.1;
4201 * self.think = nextthink;
4205 fld_think = parser_find_field(parser, "think");
4206 fld_nextthink = parser_find_field(parser, "nextthink");
4207 fld_frame = parser_find_field(parser, "frame");
4208 if (!fld_think || !fld_nextthink || !fld_frame) {
4209 parseerror(parser, "cannot use [frame,think] notation without the required fields");
4210 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
4213 gbl_time = parser_find_global(parser, "time");
4214 gbl_self = parser_find_global(parser, "self");
4215 if (!gbl_time || !gbl_self) {
4216 parseerror(parser, "cannot use [frame,think] notation without the required globals");
4217 parseerror(parser, "please declare the following globals: `time`, `self`");
4221 if (!parser_next(parser))
4224 framenum = parse_expression_leave(parser, true, false, false);
4226 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
4229 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
4230 ast_unref(framenum);
4231 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
4235 if (parser->tok != ',') {
4236 ast_unref(framenum);
4237 parseerror(parser, "expected comma after frame number in [frame,think] notation");
4238 parseerror(parser, "Got a %i\n", parser->tok);
4242 if (!parser_next(parser)) {
4243 ast_unref(framenum);
4247 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
4249 /* qc allows the use of not-yet-declared functions here
4250 * - this automatically creates a prototype */
4251 ast_value *thinkfunc;
4252 ast_expression *functype = fld_think->next;
4254 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
4255 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
4256 ast_unref(framenum);
4257 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
4260 ast_type_adopt(thinkfunc, functype);
4262 if (!parser_next(parser)) {
4263 ast_unref(framenum);
4264 ast_delete(thinkfunc);
4268 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
4270 nextthink = (ast_expression*)thinkfunc;
4273 nextthink = parse_expression_leave(parser, true, false, false);
4275 ast_unref(framenum);
4276 parseerror(parser, "expected a think-function in [frame,think] notation");
4281 if (!ast_istype(nextthink, ast_value)) {
4282 parseerror(parser, "think-function in [frame,think] notation must be a constant");
4286 if (retval && parser->tok != ']') {
4287 parseerror(parser, "expected closing `]` for [frame,think] notation");
4291 if (retval && !parser_next(parser)) {
4295 if (retval && parser->tok != '{') {
4296 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
4301 ast_unref(nextthink);
4302 ast_unref(framenum);
4306 has_frame_think = true;
4309 block = ast_block_new(parser_ctx(parser));
4311 parseerror(parser, "failed to allocate block");
4312 if (has_frame_think) {
4313 ast_unref(nextthink);
4314 ast_unref(framenum);
4319 if (has_frame_think) {
4321 ast_expression *self_frame;
4322 ast_expression *self_nextthink;
4323 ast_expression *self_think;
4324 ast_expression *time_plus_1;
4325 ast_store *store_frame;
4326 ast_store *store_nextthink;
4327 ast_store *store_think;
4329 ctx = parser_ctx(parser);
4330 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
4331 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
4332 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
4334 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
4335 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
4337 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
4338 if (self_frame) ast_delete(self_frame);
4339 if (self_nextthink) ast_delete(self_nextthink);
4340 if (self_think) ast_delete(self_think);
4341 if (time_plus_1) ast_delete(time_plus_1);
4347 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
4348 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
4349 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
4352 ast_delete(self_frame);
4355 if (!store_nextthink) {
4356 ast_delete(self_nextthink);
4360 ast_delete(self_think);
4364 if (store_frame) ast_delete(store_frame);
4365 if (store_nextthink) ast_delete(store_nextthink);
4366 if (store_think) ast_delete(store_think);
4369 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
4370 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
4371 !ast_block_add_expr(block, (ast_expression*)store_think))
4378 parseerror(parser, "failed to generate code for [frame,think]");
4379 ast_unref(nextthink);
4380 ast_unref(framenum);
4386 if (var->hasvalue) {
4387 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
4388 ast_block_delete(block);
4392 func = ast_function_new(ast_ctx(var), var->name, var);
4394 parseerror(parser, "failed to allocate function for `%s`", var->name);
4395 ast_block_delete(block);
4398 vec_push(parser->functions, func);
4400 parser_enterblock(parser);
4402 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
4404 ast_value *param = var->expression.params[parami];
4407 if (param->expression.vtype != TYPE_VECTOR &&
4408 (param->expression.vtype != TYPE_FIELD ||
4409 param->expression.next->vtype != TYPE_VECTOR))
4414 if (!create_vector_members(param, me)) {
4415 ast_block_delete(block);
4419 for (e = 0; e < 3; ++e) {
4420 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4421 ast_block_collect(block, (ast_expression*)me[e]);
4425 if (var->argcounter) {
4426 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4427 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4431 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4433 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4434 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4435 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4436 varargs->expression.count = 0;
4437 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4438 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4439 ast_delete(varargs);
4440 ast_block_delete(block);
4443 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4444 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4445 ast_delete(varargs);
4446 ast_block_delete(block);
4449 func->varargs = varargs;
4451 func->fixedparams = parser_const_float(parser, vec_size(var->expression.params));
4454 parser->function = func;
4455 if (!parse_block_into(parser, block)) {
4456 ast_block_delete(block);
4460 vec_push(func->blocks, block);
4463 parser->function = old;
4464 if (!parser_leaveblock(parser))
4466 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4467 parseerror(parser, "internal error: local scopes left");
4471 if (parser->tok == ';')
4472 return parser_next(parser);
4473 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4474 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4478 (void)!parser_leaveblock(parser);
4479 vec_pop(parser->functions);
4480 ast_function_delete(func);
4481 var->constval.vfunc = NULL;
4484 parser->function = old;
4488 static ast_expression *array_accessor_split(
4493 ast_expression *left,
4494 ast_expression *right
4500 lex_ctx ctx = ast_ctx(array);
4502 if (!left || !right) {
4503 if (left) ast_delete(left);
4504 if (right) ast_delete(right);
4508 cmp = ast_binary_new(ctx, INSTR_LT,
4509 (ast_expression*)index,
4510 (ast_expression*)parser_const_float(parser, middle));
4514 parseerror(parser, "internal error: failed to create comparison for array setter");
4518 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4520 ast_delete(cmp); /* will delete left and right */
4521 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4525 return (ast_expression*)ifthen;
4528 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4530 lex_ctx ctx = ast_ctx(array);
4532 if (from+1 == afterend) {
4533 /* set this value */
4536 ast_array_index *subscript;
4538 int assignop = type_store_instr[value->expression.vtype];
4540 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4541 assignop = INSTR_STORE_V;
4543 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4547 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4549 ast_delete(subscript);
4553 block = ast_block_new(ctx);
4559 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4564 ret = ast_return_new(ctx, NULL);
4570 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4575 return (ast_expression*)block;
4577 ast_expression *left, *right;
4578 size_t diff = afterend - from;
4579 size_t middle = from + diff/2;
4580 left = array_setter_node(parser, array, index, value, from, middle);
4581 right = array_setter_node(parser, array, index, value, middle, afterend);
4582 return array_accessor_split(parser, array, index, middle, left, right);
4586 static ast_expression *array_field_setter_node(
4595 lex_ctx ctx = ast_ctx(array);
4597 if (from+1 == afterend) {
4598 /* set this value */
4601 ast_entfield *entfield;
4602 ast_array_index *subscript;
4604 int assignop = type_storep_instr[value->expression.vtype];
4606 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4607 assignop = INSTR_STOREP_V;
4609 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4613 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4614 subscript->expression.vtype = TYPE_FIELD;
4616 entfield = ast_entfield_new_force(ctx,
4617 (ast_expression*)entity,
4618 (ast_expression*)subscript,
4619 (ast_expression*)subscript);
4621 ast_delete(subscript);
4625 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4627 ast_delete(entfield);
4631 block = ast_block_new(ctx);
4637 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4642 ret = ast_return_new(ctx, NULL);
4648 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4653 return (ast_expression*)block;
4655 ast_expression *left, *right;
4656 size_t diff = afterend - from;
4657 size_t middle = from + diff/2;
4658 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4659 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4660 return array_accessor_split(parser, array, index, middle, left, right);
4664 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4666 lex_ctx ctx = ast_ctx(array);
4668 if (from+1 == afterend) {
4670 ast_array_index *subscript;
4672 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4676 ret = ast_return_new(ctx, (ast_expression*)subscript);
4678 ast_delete(subscript);
4682 return (ast_expression*)ret;
4684 ast_expression *left, *right;
4685 size_t diff = afterend - from;
4686 size_t middle = from + diff/2;
4687 left = array_getter_node(parser, array, index, from, middle);
4688 right = array_getter_node(parser, array, index, middle, afterend);
4689 return array_accessor_split(parser, array, index, middle, left, right);
4693 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4695 ast_function *func = NULL;
4696 ast_value *fval = NULL;
4697 ast_block *body = NULL;
4699 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4701 parseerror(parser, "failed to create accessor function value");
4705 func = ast_function_new(ast_ctx(array), funcname, fval);
4708 parseerror(parser, "failed to create accessor function node");
4712 body = ast_block_new(ast_ctx(array));
4714 parseerror(parser, "failed to create block for array accessor");
4720 vec_push(func->blocks, body);
4723 vec_push(parser->accessors, fval);
4728 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4730 ast_value *index = NULL;
4731 ast_value *value = NULL;
4735 if (!ast_istype(array->expression.next, ast_value)) {
4736 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4740 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4742 func = fval->constval.vfunc;
4743 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4745 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4746 value = ast_value_copy((ast_value*)array->expression.next);
4748 if (!index || !value) {
4749 parseerror(parser, "failed to create locals for array accessor");
4752 (void)!ast_value_set_name(value, "value"); /* not important */
4753 vec_push(fval->expression.params, index);
4754 vec_push(fval->expression.params, value);
4756 array->setter = fval;
4759 if (index) ast_delete(index);
4760 if (value) ast_delete(value);
4766 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4768 ast_expression *root = NULL;
4769 root = array_setter_node(parser, array,
4770 array->setter->expression.params[0],
4771 array->setter->expression.params[1],
4772 0, array->expression.count);
4774 parseerror(parser, "failed to build accessor search tree");
4777 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4784 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4786 if (!parser_create_array_setter_proto(parser, array, funcname))
4788 return parser_create_array_setter_impl(parser, array);
4791 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4793 ast_expression *root = NULL;
4794 ast_value *entity = NULL;
4795 ast_value *index = NULL;
4796 ast_value *value = NULL;
4800 if (!ast_istype(array->expression.next, ast_value)) {
4801 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4805 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4807 func = fval->constval.vfunc;
4808 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4810 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4811 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4812 value = ast_value_copy((ast_value*)array->expression.next);
4813 if (!entity || !index || !value) {
4814 parseerror(parser, "failed to create locals for array accessor");
4817 (void)!ast_value_set_name(value, "value"); /* not important */
4818 vec_push(fval->expression.params, entity);
4819 vec_push(fval->expression.params, index);
4820 vec_push(fval->expression.params, value);
4822 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4824 parseerror(parser, "failed to build accessor search tree");
4828 array->setter = fval;
4829 return ast_block_add_expr(func->blocks[0], root);
4831 if (entity) ast_delete(entity);
4832 if (index) ast_delete(index);
4833 if (value) ast_delete(value);
4834 if (root) ast_delete(root);
4840 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4842 ast_value *index = NULL;
4846 /* NOTE: checking array->expression.next rather than elemtype since
4847 * for fields elemtype is a temporary fieldtype.
4849 if (!ast_istype(array->expression.next, ast_value)) {
4850 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4854 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4856 func = fval->constval.vfunc;
4857 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4859 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4862 parseerror(parser, "failed to create locals for array accessor");
4865 vec_push(fval->expression.params, index);
4867 array->getter = fval;
4870 if (index) ast_delete(index);
4876 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4878 ast_expression *root = NULL;
4880 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4882 parseerror(parser, "failed to build accessor search tree");
4885 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4892 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4894 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4896 return parser_create_array_getter_impl(parser, array);
4899 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4900 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4908 bool variadic = false;
4909 ast_value *varparam = NULL;
4910 char *argcounter = NULL;
4912 ctx = parser_ctx(parser);
4914 /* for the sake of less code we parse-in in this function */
4915 if (!parser_next(parser)) {
4917 parseerror(parser, "expected parameter list");
4923 /* parse variables until we hit a closing paren */
4924 while (parser->tok != ')') {
4926 /* there must be commas between them */
4927 if (parser->tok != ',') {
4928 parseerror(parser, "expected comma or end of parameter list");
4931 if (!parser_next(parser)) {
4932 parseerror(parser, "expected parameter");
4938 if (parser->tok == TOKEN_DOTS) {
4939 /* '...' indicates a varargs function */
4941 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4942 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4945 if (parser->tok == TOKEN_IDENT) {
4946 argcounter = util_strdup(parser_tokval(parser));
4947 if (!parser_next(parser) || parser->tok != ')') {
4948 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4955 /* for anything else just parse a typename */
4956 param = parse_typename(parser, NULL, NULL);
4959 vec_push(params, param);
4960 if (param->expression.vtype >= TYPE_VARIANT) {
4961 char tname[1024]; /* typename is reserved in C++ */
4962 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4963 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4966 /* type-restricted varargs */
4967 if (parser->tok == TOKEN_DOTS) {
4969 varparam = vec_last(params);
4971 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4972 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4975 if (parser->tok == TOKEN_IDENT) {
4976 argcounter = util_strdup(parser_tokval(parser));
4977 if (!parser_next(parser) || parser->tok != ')') {
4978 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4986 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4990 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4991 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4994 if (!parser_next(parser)) {
4995 parseerror(parser, "parse error after typename");
4999 /* now turn 'var' into a function type */
5000 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
5001 fval->expression.next = (ast_expression*)var;
5003 fval->expression.flags |= AST_FLAG_VARIADIC;
5006 var->expression.params = params;
5007 var->expression.varparam = (ast_expression*)varparam;
5008 var->argcounter = argcounter;
5017 ast_delete(varparam);
5019 for (i = 0; i < vec_size(params); ++i)
5020 ast_delete(params[i]);
5025 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
5027 ast_expression *cexp;
5028 ast_value *cval, *tmp;
5031 ctx = parser_ctx(parser);
5033 if (!parser_next(parser)) {
5035 parseerror(parser, "expected array-size");
5039 if (parser->tok != ']') {
5040 cexp = parse_expression_leave(parser, true, false, false);
5042 if (!cexp || !ast_istype(cexp, ast_value)) {
5046 parseerror(parser, "expected array-size as constant positive integer");
5049 cval = (ast_value*)cexp;
5056 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
5057 tmp->expression.next = (ast_expression*)var;
5061 if (cval->expression.vtype == TYPE_INTEGER)
5062 tmp->expression.count = cval->constval.vint;
5063 else if (cval->expression.vtype == TYPE_FLOAT)
5064 tmp->expression.count = cval->constval.vfloat;
5068 parseerror(parser, "array-size must be a positive integer constant");
5074 var->expression.count = -1;
5075 var->expression.flags |= AST_FLAG_ARRAY_INIT;
5078 if (parser->tok != ']') {
5080 parseerror(parser, "expected ']' after array-size");
5083 if (!parser_next(parser)) {
5085 parseerror(parser, "error after parsing array size");
5091 /* Parse a complete typename.
5092 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
5093 * but when parsing variables separated by comma
5094 * 'storebase' should point to where the base-type should be kept.
5095 * The base type makes up every bit of type information which comes *before* the
5098 * The following will be parsed in its entirety:
5100 * The 'basetype' in this case is 'void()'
5101 * and if there's a comma after it, say:
5103 * then the type-information 'void()' can be stored in 'storebase'
5105 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
5107 ast_value *var, *tmp;
5110 const char *name = NULL;
5111 bool isfield = false;
5112 bool wasarray = false;
5113 size_t morefields = 0;
5115 ctx = parser_ctx(parser);
5117 /* types may start with a dot */
5118 if (parser->tok == '.') {
5120 /* if we parsed a dot we need a typename now */
5121 if (!parser_next(parser)) {
5122 parseerror(parser, "expected typename for field definition");
5126 /* Further dots are handled seperately because they won't be part of the
5129 while (parser->tok == '.') {
5131 if (!parser_next(parser)) {
5132 parseerror(parser, "expected typename for field definition");
5137 if (parser->tok == TOKEN_IDENT)
5138 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
5139 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
5140 parseerror(parser, "expected typename");
5144 /* generate the basic type value */
5145 if (cached_typedef) {
5146 var = ast_value_copy(cached_typedef);
5147 ast_value_set_name(var, "<type(from_def)>");
5149 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
5151 for (; morefields; --morefields) {
5152 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
5153 tmp->expression.next = (ast_expression*)var;
5157 /* do not yet turn into a field - remember:
5158 * .void() foo; is a field too
5159 * .void()() foo; is a function
5163 if (!parser_next(parser)) {
5165 parseerror(parser, "parse error after typename");
5169 /* an opening paren now starts the parameter-list of a function
5170 * this is where original-QC has parameter lists.
5171 * We allow a single parameter list here.
5172 * Much like fteqcc we don't allow `float()() x`
5174 if (parser->tok == '(') {
5175 var = parse_parameter_list(parser, var);
5180 /* store the base if requested */
5182 *storebase = ast_value_copy(var);
5184 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5185 tmp->expression.next = (ast_expression*)*storebase;
5190 /* there may be a name now */
5191 if (parser->tok == TOKEN_IDENT) {
5192 name = util_strdup(parser_tokval(parser));
5194 if (!parser_next(parser)) {
5197 parseerror(parser, "error after variable or field declaration");
5202 /* now this may be an array */
5203 if (parser->tok == '[') {
5205 var = parse_arraysize(parser, var);
5207 if (name) mem_d(name);
5212 /* This is the point where we can turn it into a field */
5214 /* turn it into a field if desired */
5215 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5216 tmp->expression.next = (ast_expression*)var;
5220 /* now there may be function parens again */
5221 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5222 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5223 if (parser->tok == '(' && wasarray)
5224 parseerror(parser, "arrays as part of a return type is not supported");
5225 while (parser->tok == '(') {
5226 var = parse_parameter_list(parser, var);
5228 if (name) mem_d(name);
5233 /* finally name it */
5235 if (!ast_value_set_name(var, name)) {
5238 parseerror(parser, "internal error: failed to set name");
5241 /* free the name, ast_value_set_name duplicates */
5248 static bool parse_typedef(parser_t *parser)
5250 ast_value *typevar, *oldtype;
5251 ast_expression *old;
5253 typevar = parse_typename(parser, NULL, NULL);
5258 if ( (old = parser_find_var(parser, typevar->name)) ) {
5259 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
5260 " -> `%s` has been declared here: %s:%i",
5261 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
5262 ast_delete(typevar);
5266 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
5267 parseerror(parser, "type `%s` has already been declared here: %s:%i",
5268 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
5269 ast_delete(typevar);
5273 vec_push(parser->_typedefs, typevar);
5274 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
5276 if (parser->tok != ';') {
5277 parseerror(parser, "expected semicolon after typedef");
5280 if (!parser_next(parser)) {
5281 parseerror(parser, "parse error after typedef");
5288 static const char *cvq_to_str(int cvq) {
5290 case CV_NONE: return "none";
5291 case CV_VAR: return "`var`";
5292 case CV_CONST: return "`const`";
5293 default: return "<INVALID>";
5297 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
5300 if (proto->cvq != var->cvq) {
5301 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
5302 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5303 parser->tok == '='))
5305 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
5306 "`%s` declared with different qualifiers: %s\n"
5307 " -> previous declaration here: %s:%i uses %s",
5308 var->name, cvq_to_str(var->cvq),
5309 ast_ctx(proto).file, ast_ctx(proto).line,
5310 cvq_to_str(proto->cvq));
5313 av = (var ->expression.flags & AST_FLAG_NORETURN);
5314 ao = (proto->expression.flags & AST_FLAG_NORETURN);
5316 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
5317 "`%s` declared with different attributes%s\n"
5318 " -> previous declaration here: %s:%i",
5319 var->name, (av ? ": noreturn" : ""),
5320 ast_ctx(proto).file, ast_ctx(proto).line,
5321 (ao ? ": noreturn" : ""));
5326 static bool create_array_accessors(parser_t *parser, ast_value *var)
5329 util_snprintf(name, sizeof(name), "%s##SET", var->name);
5330 if (!parser_create_array_setter(parser, var, name))
5332 util_snprintf(name, sizeof(name), "%s##GET", var->name);
5333 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5338 static bool parse_array(parser_t *parser, ast_value *array)
5341 if (array->initlist) {
5342 parseerror(parser, "array already initialized elsewhere");
5345 if (!parser_next(parser)) {
5346 parseerror(parser, "parse error in array initializer");
5350 while (parser->tok != '}') {
5351 ast_value *v = (ast_value*)parse_expression_leave(parser, true, false, false);
5354 if (!ast_istype(v, ast_value) || !v->hasvalue || v->cvq != CV_CONST) {
5356 parseerror(parser, "initializing element must be a compile time constant");
5359 vec_push(array->initlist, v->constval);
5360 if (v->expression.vtype == TYPE_STRING) {
5361 array->initlist[i].vstring = util_strdupe(array->initlist[i].vstring);
5365 if (parser->tok == '}')
5367 if (parser->tok != ',' || !parser_next(parser)) {
5368 parseerror(parser, "expected comma or '}' in element list");
5372 if (!parser_next(parser) || parser->tok != ';') {
5373 parseerror(parser, "expected semicolon after initializer, got %s");
5377 if (!parser_next(parser)) {
5378 parseerror(parser, "parse error after initializer");
5383 if (array->expression.flags & AST_FLAG_ARRAY_INIT) {
5384 if (array->expression.count != (size_t)-1) {
5385 parseerror(parser, "array `%s' has already been initialized with %u elements",
5386 array->name, (unsigned)array->expression.count);
5388 array->expression.count = vec_size(array->initlist);
5389 if (!create_array_accessors(parser, array))
5395 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)
5399 ast_expression *old;
5403 ast_value *basetype = NULL;
5405 bool isparam = false;
5406 bool isvector = false;
5407 bool cleanvar = true;
5408 bool wasarray = false;
5410 ast_member *me[3] = { NULL, NULL, NULL };
5412 if (!localblock && is_static)
5413 parseerror(parser, "`static` qualifier is not supported in global scope");
5415 /* get the first complete variable */
5416 var = parse_typename(parser, &basetype, cached_typedef);
5419 ast_delete(basetype);
5427 /* Part 0: finish the type */
5428 if (parser->tok == '(') {
5429 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5430 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5431 var = parse_parameter_list(parser, var);
5437 /* we only allow 1-dimensional arrays */
5438 if (parser->tok == '[') {
5440 var = parse_arraysize(parser, var);
5446 if (parser->tok == '(' && wasarray) {
5447 parseerror(parser, "arrays as part of a return type is not supported");
5448 /* we'll still parse the type completely for now */
5450 /* for functions returning functions */
5451 while (parser->tok == '(') {
5452 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5453 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5454 var = parse_parameter_list(parser, var);
5461 var->cvq = qualifier;
5462 var->expression.flags |= qflags;
5465 * store the vstring back to var for alias and
5466 * deprecation messages.
5468 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5469 var->expression.flags & AST_FLAG_ALIAS)
5470 var->desc = vstring;
5473 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5474 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5475 * is then filled with the previous definition and the parameter-names replaced.
5477 if (!strcmp(var->name, "nil")) {
5478 if (OPTS_FLAG(UNTYPED_NIL)) {
5479 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5480 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5482 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5485 /* Deal with end_sys_ vars */
5487 if (!strcmp(var->name, "end_sys_globals")) {
5489 parser->crc_globals = vec_size(parser->globals);
5492 else if (!strcmp(var->name, "end_sys_fields")) {
5494 parser->crc_fields = vec_size(parser->fields);
5497 if (was_end && var->expression.vtype == TYPE_FIELD) {
5498 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5499 "global '%s' hint should not be a field",
5500 parser_tokval(parser)))
5507 if (!nofields && var->expression.vtype == TYPE_FIELD)
5509 /* deal with field declarations */
5510 old = parser_find_field(parser, var->name);
5512 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5513 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5522 parseerror(parser, "field `%s` already declared here: %s:%i",
5523 var->name, ast_ctx(old).file, ast_ctx(old).line);
5528 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5529 (old = parser_find_global(parser, var->name)))
5531 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5532 parseerror(parser, "field `%s` already declared here: %s:%i",
5533 var->name, ast_ctx(old).file, ast_ctx(old).line);
5540 /* deal with other globals */
5541 old = parser_find_global(parser, var->name);
5542 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5544 /* This is a function which had a prototype */
5545 if (!ast_istype(old, ast_value)) {
5546 parseerror(parser, "internal error: prototype is not an ast_value");
5550 proto = (ast_value*)old;
5551 proto->desc = var->desc;
5552 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5553 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5555 ast_ctx(proto).file, ast_ctx(proto).line);
5559 /* we need the new parameter-names */
5560 for (i = 0; i < vec_size(proto->expression.params); ++i)
5561 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5562 if (!parser_check_qualifiers(parser, var, proto)) {
5569 proto->expression.flags |= var->expression.flags;
5577 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5578 "global `%s` already declared here: %s:%i",
5579 var->name, ast_ctx(old).file, ast_ctx(old).line))
5584 proto = (ast_value*)old;
5585 if (!ast_istype(old, ast_value)) {
5586 parseerror(parser, "internal error: not an ast_value");
5591 if (!parser_check_qualifiers(parser, var, proto)) {
5596 proto->expression.flags |= var->expression.flags;
5600 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5601 (old = parser_find_field(parser, var->name)))
5603 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5604 parseerror(parser, "global `%s` already declared here: %s:%i",
5605 var->name, ast_ctx(old).file, ast_ctx(old).line);
5612 else /* it's not a global */
5614 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5615 if (old && !isparam) {
5616 parseerror(parser, "local `%s` already declared here: %s:%i",
5617 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5621 old = parser_find_local(parser, var->name, 0, &isparam);
5622 if (old && isparam) {
5623 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5624 "local `%s` is shadowing a parameter", var->name))
5626 parseerror(parser, "local `%s` already declared here: %s:%i",
5627 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5631 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5639 /* in a noref section we simply bump the usecount */
5640 if (noref || parser->noref)
5644 * Create the global/local, and deal with vector types.
5647 if (var->expression.vtype == TYPE_VECTOR)
5649 else if (var->expression.vtype == TYPE_FIELD &&
5650 var->expression.next->vtype == TYPE_VECTOR)
5654 if (!create_vector_members(var, me)) {
5661 /* deal with global variables, fields, functions */
5662 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5663 var->isfield = true;
5664 vec_push(parser->fields, (ast_expression*)var);
5665 util_htset(parser->htfields, var->name, var);
5667 for (i = 0; i < 3; ++i) {
5668 vec_push(parser->fields, (ast_expression*)me[i]);
5669 util_htset(parser->htfields, me[i]->name, me[i]);
5674 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5675 parser_addglobal(parser, var->name, (ast_expression*)var);
5677 for (i = 0; i < 3; ++i) {
5678 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5682 ast_expression *find = parser_find_global(parser, var->desc);
5685 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5689 if (var->expression.vtype != find->vtype) {
5693 ast_type_to_string(find, ty1, sizeof(ty1));
5694 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5696 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5703 * add alias to aliases table and to corrector
5704 * so corrections can apply for aliases as well.
5706 util_htset(parser->aliases, var->name, find);
5709 * add to corrector so corrections can work
5710 * even for aliases too.
5713 vec_last(parser->correct_variables),
5714 &vec_last(parser->correct_variables_score),
5718 /* generate aliases for vector components */
5722 util_asprintf(&buffer[0], "%s_x", var->desc);
5723 util_asprintf(&buffer[1], "%s_y", var->desc);
5724 util_asprintf(&buffer[2], "%s_z", var->desc);
5726 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5727 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5728 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5735 * add to corrector so corrections can work
5736 * even for aliases too.
5739 vec_last(parser->correct_variables),
5740 &vec_last(parser->correct_variables_score),
5744 vec_last(parser->correct_variables),
5745 &vec_last(parser->correct_variables_score),
5749 vec_last(parser->correct_variables),
5750 &vec_last(parser->correct_variables_score),
5758 /* a static adds itself to be generated like any other global
5759 * but is added to the local namespace instead
5761 char *defname = NULL;
5762 size_t prefix_len, ln;
5764 ln = strlen(parser->function->name);
5765 vec_append(defname, ln, parser->function->name);
5767 vec_append(defname, 2, "::");
5768 /* remember the length up to here */
5769 prefix_len = vec_size(defname);
5771 /* Add it to the local scope */
5772 util_htset(vec_last(parser->variables), var->name, (void*)var);
5776 vec_last(parser->correct_variables),
5777 &vec_last(parser->correct_variables_score),
5781 /* now rename the global */
5782 ln = strlen(var->name);
5783 vec_append(defname, ln, var->name);
5784 ast_value_set_name(var, defname);
5786 /* push it to the to-be-generated globals */
5787 vec_push(parser->globals, (ast_expression*)var);
5789 /* same game for the vector members */
5791 for (i = 0; i < 3; ++i) {
5792 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5796 vec_last(parser->correct_variables),
5797 &vec_last(parser->correct_variables_score),
5801 vec_shrinkto(defname, prefix_len);
5802 ln = strlen(me[i]->name);
5803 vec_append(defname, ln, me[i]->name);
5804 ast_member_set_name(me[i], defname);
5806 vec_push(parser->globals, (ast_expression*)me[i]);
5811 vec_push(localblock->locals, var);
5812 parser_addlocal(parser, var->name, (ast_expression*)var);
5814 for (i = 0; i < 3; ++i) {
5815 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5816 ast_block_collect(localblock, (ast_expression*)me[i]);
5822 me[0] = me[1] = me[2] = NULL;
5827 if (var->expression.vtype == TYPE_ARRAY) {
5828 if (var->expression.count != (size_t)-1) {
5829 if (!create_array_accessors(parser, var))
5833 else if (!localblock && !nofields &&
5834 var->expression.vtype == TYPE_FIELD &&
5835 var->expression.next->vtype == TYPE_ARRAY)
5838 ast_expression *telem;
5840 ast_value *array = (ast_value*)var->expression.next;
5842 if (!ast_istype(var->expression.next, ast_value)) {
5843 parseerror(parser, "internal error: field element type must be an ast_value");
5847 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5848 if (!parser_create_array_field_setter(parser, array, name))
5851 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5852 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5853 tfield->expression.next = telem;
5854 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5855 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5863 if (parser->tok == ';') {
5864 ast_delete(basetype);
5865 if (!parser_next(parser)) {
5866 parseerror(parser, "error after variable declaration");
5872 if (parser->tok == ',')
5876 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5879 parseerror(parser, "missing comma or semicolon while parsing variables");
5883 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5884 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5885 "initializing expression turns variable `%s` into a constant in this standard",
5892 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5893 if (parser->tok != '=') {
5894 if (!strcmp(parser_tokval(parser), "break")) {
5895 if (!parser_next(parser)) {
5896 parseerror(parser, "error parsing break definition");
5899 (void)!!parsewarning(parser, WARN_BREAKDEF, "break definition ignored (suggest removing it)");
5901 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5906 if (!parser_next(parser)) {
5907 parseerror(parser, "error parsing initializer");
5911 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5912 parseerror(parser, "expected '=' before function body in this standard");
5915 if (parser->tok == '#') {
5916 ast_function *func = NULL;
5917 ast_value *number = NULL;
5923 parseerror(parser, "cannot declare builtins within functions");
5926 if (var->expression.vtype != TYPE_FUNCTION) {
5927 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5930 if (!parser_next(parser)) {
5931 parseerror(parser, "expected builtin number");
5935 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5936 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5938 parseerror(parser, "builtin number expected");
5941 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5944 parseerror(parser, "builtin number must be a compile time constant");
5947 if (number->expression.vtype == TYPE_INTEGER)
5948 builtin_num = number->constval.vint;
5949 else if (number->expression.vtype == TYPE_FLOAT)
5950 builtin_num = number->constval.vfloat;
5953 parseerror(parser, "builtin number must be an integer constant");
5958 fractional = modff(builtin_num, &integral);
5959 if (builtin_num < 0 || fractional != 0) {
5960 parseerror(parser, "builtin number must be an integer greater than zero");
5964 /* we only want the integral part anyways */
5965 builtin_num = integral;
5966 } else if (parser->tok == TOKEN_INTCONST) {
5967 builtin_num = parser_token(parser)->constval.i;
5969 parseerror(parser, "builtin number must be a compile time constant");
5973 if (var->hasvalue) {
5974 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5975 "builtin `%s` has already been defined\n"
5976 " -> previous declaration here: %s:%i",
5977 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5981 func = ast_function_new(ast_ctx(var), var->name, var);
5983 parseerror(parser, "failed to allocate function for `%s`", var->name);
5986 vec_push(parser->functions, func);
5988 func->builtin = -builtin_num-1;
5991 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5992 ? (parser->tok != ',' && parser->tok != ';')
5993 : (!parser_next(parser)))
5995 parseerror(parser, "expected comma or semicolon");
5997 ast_function_delete(func);
5998 var->constval.vfunc = NULL;
6002 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
6005 /* Note that fteqcc and most others don't even *have*
6006 * local arrays, so this is not a high priority.
6008 parseerror(parser, "TODO: initializers for local arrays");
6012 var->hasvalue = true;
6013 if (!parse_array(parser, var))
6016 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
6019 parseerror(parser, "cannot declare functions within functions");
6024 ast_ctx(proto) = parser_ctx(parser);
6026 if (!parse_function_body(parser, var))
6028 ast_delete(basetype);
6029 for (i = 0; i < vec_size(parser->gotos); ++i)
6030 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
6031 vec_free(parser->gotos);
6032 vec_free(parser->labels);
6035 ast_expression *cexp;
6038 cexp = parse_expression_leave(parser, true, false, false);
6043 cval = (ast_value*)cexp;
6044 if (cval != parser->nil &&
6045 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
6048 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
6052 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
6053 qualifier != CV_VAR)
6055 var->cvq = CV_CONST;
6057 if (cval == parser->nil)
6058 var->expression.flags |= AST_FLAG_INITIALIZED;
6061 var->hasvalue = true;
6062 if (cval->expression.vtype == TYPE_STRING)
6063 var->constval.vstring = parser_strdup(cval->constval.vstring);
6064 else if (cval->expression.vtype == TYPE_FIELD)
6065 var->constval.vfield = cval;
6067 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
6073 shunt sy = { NULL, NULL, NULL, NULL };
6076 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
6077 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
6078 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
6079 if (!parser_sy_apply_operator(parser, &sy))
6082 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
6083 parseerror(parser, "internal error: leaked operands");
6084 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
6095 if (parser->tok == ',') {
6096 if (!parser_next(parser)) {
6097 parseerror(parser, "expected another variable");
6101 if (parser->tok != TOKEN_IDENT) {
6102 parseerror(parser, "expected another variable");
6105 var = ast_value_copy(basetype);
6107 ast_value_set_name(var, parser_tokval(parser));
6108 if (!parser_next(parser)) {
6109 parseerror(parser, "error parsing variable declaration");
6115 if (parser->tok != ';') {
6116 parseerror(parser, "missing semicolon after variables");
6120 if (!parser_next(parser)) {
6121 parseerror(parser, "parse error after variable declaration");
6125 ast_delete(basetype);
6129 if (cleanvar && var)
6131 ast_delete(basetype);
6135 ast_delete(basetype);
6136 if (cleanvar && var)
6138 if (me[0]) ast_member_delete(me[0]);
6139 if (me[1]) ast_member_delete(me[1]);
6140 if (me[2]) ast_member_delete(me[2]);
6144 static bool parser_global_statement(parser_t *parser)
6148 bool is_static = false;
6149 uint32_t qflags = 0;
6150 ast_value *istype = NULL;
6151 char *vstring = NULL;
6153 if (parser->tok == TOKEN_IDENT)
6154 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
6156 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
6158 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
6160 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
6162 if (cvq == CV_WRONG)
6164 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
6166 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
6168 return parse_enum(parser);
6170 else if (parser->tok == TOKEN_KEYWORD)
6172 if (!strcmp(parser_tokval(parser), "typedef")) {
6173 if (!parser_next(parser)) {
6174 parseerror(parser, "expected type definition after 'typedef'");
6177 return parse_typedef(parser);
6179 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
6182 else if (parser->tok == '#')
6184 return parse_pragma(parser);
6186 else if (parser->tok == '$')
6188 if (!parser_next(parser)) {
6189 parseerror(parser, "parse error");
6195 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
6201 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
6203 return util_crc16(old, str, strlen(str));
6206 static void progdefs_crc_file(const char *str)
6208 /* write to progdefs.h here */
6212 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
6214 old = progdefs_crc_sum(old, str);
6215 progdefs_crc_file(str);
6219 static void generate_checksum(parser_t *parser, ir_builder *ir)
6221 uint16_t crc = 0xFFFF;
6225 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
6226 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
6228 progdefs_crc_file("\tint\tpad;\n");
6229 progdefs_crc_file("\tint\tofs_return[3];\n");
6230 progdefs_crc_file("\tint\tofs_parm0[3];\n");
6231 progdefs_crc_file("\tint\tofs_parm1[3];\n");
6232 progdefs_crc_file("\tint\tofs_parm2[3];\n");
6233 progdefs_crc_file("\tint\tofs_parm3[3];\n");
6234 progdefs_crc_file("\tint\tofs_parm4[3];\n");
6235 progdefs_crc_file("\tint\tofs_parm5[3];\n");
6236 progdefs_crc_file("\tint\tofs_parm6[3];\n");
6237 progdefs_crc_file("\tint\tofs_parm7[3];\n");
6239 for (i = 0; i < parser->crc_globals; ++i) {
6240 if (!ast_istype(parser->globals[i], ast_value))
6242 value = (ast_value*)(parser->globals[i]);
6243 switch (value->expression.vtype) {
6244 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6245 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6246 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6247 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6249 crc = progdefs_crc_both(crc, "\tint\t");
6252 crc = progdefs_crc_both(crc, value->name);
6253 crc = progdefs_crc_both(crc, ";\n");
6255 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
6256 for (i = 0; i < parser->crc_fields; ++i) {
6257 if (!ast_istype(parser->fields[i], ast_value))
6259 value = (ast_value*)(parser->fields[i]);
6260 switch (value->expression.next->vtype) {
6261 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6262 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6263 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6264 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6266 crc = progdefs_crc_both(crc, "\tint\t");
6269 crc = progdefs_crc_both(crc, value->name);
6270 crc = progdefs_crc_both(crc, ";\n");
6272 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
6273 ir->code->crc = crc;
6276 parser_t *parser_create()
6282 parser = (parser_t*)mem_a(sizeof(parser_t));
6286 memset(parser, 0, sizeof(*parser));
6288 for (i = 0; i < operator_count; ++i) {
6289 if (operators[i].id == opid1('=')) {
6290 parser->assign_op = operators+i;
6294 if (!parser->assign_op) {
6295 printf("internal error: initializing parser: failed to find assign operator\n");
6300 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
6301 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
6302 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
6303 vec_push(parser->_blocktypedefs, 0);
6305 parser->aliases = util_htnew(PARSER_HT_SIZE);
6307 parser->ht_imm_string = util_htnew(512);
6310 vec_push(parser->correct_variables, correct_trie_new());
6311 vec_push(parser->correct_variables_score, NULL);
6313 empty_ctx.file = "<internal>";
6315 empty_ctx.column = 0;
6316 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
6317 parser->nil->cvq = CV_CONST;
6318 if (OPTS_FLAG(UNTYPED_NIL))
6319 util_htset(parser->htglobals, "nil", (void*)parser->nil);
6321 parser->max_param_count = 1;
6323 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
6324 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
6325 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
6327 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
6328 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
6329 parser->reserved_version->cvq = CV_CONST;
6330 parser->reserved_version->hasvalue = true;
6331 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
6332 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
6334 parser->reserved_version = NULL;
6340 static bool parser_compile(parser_t *parser)
6342 /* initial lexer/parser state */
6343 parser->lex->flags.noops = true;
6345 if (parser_next(parser))
6347 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
6349 if (!parser_global_statement(parser)) {
6350 if (parser->tok == TOKEN_EOF)
6351 parseerror(parser, "unexpected end of file");
6352 else if (compile_errors)
6353 parseerror(parser, "there have been errors, bailing out");
6354 lex_close(parser->lex);
6360 parseerror(parser, "parse error");
6361 lex_close(parser->lex);
6366 lex_close(parser->lex);
6369 return !compile_errors;
6372 bool parser_compile_file(parser_t *parser, const char *filename)
6374 parser->lex = lex_open(filename);
6376 con_err("failed to open file \"%s\"\n", filename);
6379 return parser_compile(parser);
6382 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
6384 parser->lex = lex_open_string(str, len, name);
6386 con_err("failed to create lexer for string \"%s\"\n", name);
6389 return parser_compile(parser);
6392 static void parser_remove_ast(parser_t *parser)
6395 if (parser->ast_cleaned)
6397 parser->ast_cleaned = true;
6398 for (i = 0; i < vec_size(parser->accessors); ++i) {
6399 ast_delete(parser->accessors[i]->constval.vfunc);
6400 parser->accessors[i]->constval.vfunc = NULL;
6401 ast_delete(parser->accessors[i]);
6403 for (i = 0; i < vec_size(parser->functions); ++i) {
6404 ast_delete(parser->functions[i]);
6406 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6407 ast_delete(parser->imm_vector[i]);
6409 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6410 ast_delete(parser->imm_string[i]);
6412 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6413 ast_delete(parser->imm_float[i]);
6415 for (i = 0; i < vec_size(parser->fields); ++i) {
6416 ast_delete(parser->fields[i]);
6418 for (i = 0; i < vec_size(parser->globals); ++i) {
6419 ast_delete(parser->globals[i]);
6421 vec_free(parser->accessors);
6422 vec_free(parser->functions);
6423 vec_free(parser->imm_vector);
6424 vec_free(parser->imm_string);
6425 util_htdel(parser->ht_imm_string);
6426 vec_free(parser->imm_float);
6427 vec_free(parser->globals);
6428 vec_free(parser->fields);
6430 for (i = 0; i < vec_size(parser->variables); ++i)
6431 util_htdel(parser->variables[i]);
6432 vec_free(parser->variables);
6433 vec_free(parser->_blocklocals);
6434 vec_free(parser->_locals);
6437 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
6438 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
6440 vec_free(parser->correct_variables);
6441 vec_free(parser->correct_variables_score);
6443 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6444 ast_delete(parser->_typedefs[i]);
6445 vec_free(parser->_typedefs);
6446 for (i = 0; i < vec_size(parser->typedefs); ++i)
6447 util_htdel(parser->typedefs[i]);
6448 vec_free(parser->typedefs);
6449 vec_free(parser->_blocktypedefs);
6451 vec_free(parser->_block_ctx);
6453 vec_free(parser->labels);
6454 vec_free(parser->gotos);
6455 vec_free(parser->breaks);
6456 vec_free(parser->continues);
6458 ast_value_delete(parser->nil);
6460 ast_value_delete(parser->const_vec[0]);
6461 ast_value_delete(parser->const_vec[1]);
6462 ast_value_delete(parser->const_vec[2]);
6464 if (parser->reserved_version)
6465 ast_value_delete(parser->reserved_version);
6467 util_htdel(parser->aliases);
6468 intrin_intrinsics_destroy(parser);
6471 void parser_cleanup(parser_t *parser)
6473 parser_remove_ast(parser);
6477 bool parser_finish(parser_t *parser, const char *output)
6483 if (compile_errors) {
6484 con_out("*** there were compile errors\n");
6488 ir = ir_builder_new("gmqcc_out");
6490 con_out("failed to allocate builder\n");
6494 for (i = 0; i < vec_size(parser->fields); ++i) {
6497 if (!ast_istype(parser->fields[i], ast_value))
6499 field = (ast_value*)parser->fields[i];
6500 hasvalue = field->hasvalue;
6501 field->hasvalue = false;
6502 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6503 con_out("failed to generate field %s\n", field->name);
6504 ir_builder_delete(ir);
6509 ast_expression *subtype;
6510 field->hasvalue = true;
6511 subtype = field->expression.next;
6512 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6513 if (subtype->vtype == TYPE_FIELD)
6514 ifld->fieldtype = subtype->next->vtype;
6515 else if (subtype->vtype == TYPE_FUNCTION)
6516 ifld->outtype = subtype->next->vtype;
6517 (void)!ir_value_set_field(field->ir_v, ifld);
6520 for (i = 0; i < vec_size(parser->globals); ++i) {
6522 if (!ast_istype(parser->globals[i], ast_value))
6524 asvalue = (ast_value*)(parser->globals[i]);
6525 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6526 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6527 "unused global: `%s`", asvalue->name);
6529 if (!ast_global_codegen(asvalue, ir, false)) {
6530 con_out("failed to generate global %s\n", asvalue->name);
6531 ir_builder_delete(ir);
6535 /* Build function vararg accessor ast tree now before generating
6536 * immediates, because the accessors may add new immediates
6538 for (i = 0; i < vec_size(parser->functions); ++i) {
6539 ast_function *f = parser->functions[i];
6541 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6542 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6543 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6544 con_out("failed to generate vararg setter for %s\n", f->name);
6545 ir_builder_delete(ir);
6548 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6549 con_out("failed to generate vararg getter for %s\n", f->name);
6550 ir_builder_delete(ir);
6554 ast_delete(f->varargs);
6559 /* Now we can generate immediates */
6560 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6561 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
6562 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
6563 ir_builder_delete(ir);
6567 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6568 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
6569 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
6570 ir_builder_delete(ir);
6574 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6575 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
6576 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
6577 ir_builder_delete(ir);
6581 for (i = 0; i < vec_size(parser->globals); ++i) {
6583 if (!ast_istype(parser->globals[i], ast_value))
6585 asvalue = (ast_value*)(parser->globals[i]);
6586 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6588 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6589 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6590 "uninitialized constant: `%s`",
6592 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6593 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6594 "uninitialized global: `%s`",
6597 if (!ast_generate_accessors(asvalue, ir)) {
6598 ir_builder_delete(ir);
6602 for (i = 0; i < vec_size(parser->fields); ++i) {
6604 asvalue = (ast_value*)(parser->fields[i]->next);
6606 if (!ast_istype((ast_expression*)asvalue, ast_value))
6608 if (asvalue->expression.vtype != TYPE_ARRAY)
6610 if (!ast_generate_accessors(asvalue, ir)) {
6611 ir_builder_delete(ir);
6615 if (parser->reserved_version &&
6616 !ast_global_codegen(parser->reserved_version, ir, false))
6618 con_out("failed to generate reserved::version");
6619 ir_builder_delete(ir);
6622 for (i = 0; i < vec_size(parser->functions); ++i) {
6623 ast_function *f = parser->functions[i];
6624 if (!ast_function_codegen(f, ir)) {
6625 con_out("failed to generate function %s\n", f->name);
6626 ir_builder_delete(ir);
6631 generate_checksum(parser, ir);
6633 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6634 ir_builder_dump(ir, con_out);
6635 for (i = 0; i < vec_size(parser->functions); ++i) {
6636 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6637 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6638 ir_builder_delete(ir);
6642 parser_remove_ast(parser);
6644 if (compile_Werrors) {
6645 con_out("*** there were warnings treated as errors\n");
6646 compile_show_werrors();
6651 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6652 ir_builder_dump(ir, con_out);
6654 if (!ir_builder_generate(ir, output)) {
6655 con_out("*** failed to generate output file\n");
6656 ir_builder_delete(ir);
6660 ir_builder_delete(ir);