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
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13 * The above copyright notice and this permission notice shall be included in all
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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,
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21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 /* beginning of locals */
33 #define PARSER_HT_LOCALS 2
35 #define PARSER_HT_SIZE 128
36 #define TYPEDEF_HT_SIZE 16
38 typedef struct parser_s {
42 ast_expression **globals;
43 ast_expression **fields;
44 ast_function **functions;
45 ast_value **imm_float;
46 ast_value **imm_string;
47 ast_value **imm_vector;
52 /* must be deleted first, they reference immediates and values */
53 ast_value **accessors;
55 ast_value *imm_float_zero;
56 ast_value *imm_float_one;
57 ast_value *imm_float_neg_one;
59 ast_value *imm_vector_zero;
62 ast_value *reserved_version;
67 ast_function *function;
70 /* All the labels the function defined...
71 * Should they be in ast_function instead?
76 const char **continues;
78 /* A list of hashtables for each scope */
84 /* same as above but for the spelling corrector */
85 correct_trie_t **correct_variables;
86 size_t ***correct_variables_score; /* vector of vector of size_t* */
88 /* not to be used directly, we use the hash table */
89 ast_expression **_locals;
91 ast_value **_typedefs;
92 size_t *_blocktypedefs;
95 /* we store the '=' operator info */
96 const oper_info *assign_op;
99 ast_value *const_vec[3];
104 /* collected information */
105 size_t max_param_count;
111 static ast_expression * const intrinsic_debug_typestring = (ast_expression*)0x1;
113 static void parser_enterblock(parser_t *parser);
114 static bool parser_leaveblock(parser_t *parser);
115 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
116 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
117 static bool parse_typedef(parser_t *parser);
118 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);
119 static ast_block* parse_block(parser_t *parser);
120 static bool parse_block_into(parser_t *parser, ast_block *block);
121 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
122 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
123 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
124 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
125 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname);
126 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname);
127 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
129 static void parseerror(parser_t *parser, const char *fmt, ...)
133 vcompile_error(parser->lex->tok.ctx, fmt, ap);
137 /* returns true if it counts as an error */
138 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
143 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
148 /**********************************************************************
149 * some maths used for constant folding
152 vector vec3_add(vector a, vector b)
161 vector vec3_sub(vector a, vector b)
170 qcfloat vec3_mulvv(vector a, vector b)
172 return (a.x * b.x + a.y * b.y + a.z * b.z);
175 vector vec3_mulvf(vector a, float b)
184 /**********************************************************************
188 static bool parser_next(parser_t *parser)
190 /* lex_do kills the previous token */
191 parser->tok = lex_do(parser->lex);
192 if (parser->tok == TOKEN_EOF)
194 if (parser->tok >= TOKEN_ERROR) {
195 parseerror(parser, "lex error");
201 #define parser_tokval(p) ((p)->lex->tok.value)
202 #define parser_token(p) (&((p)->lex->tok))
203 #define parser_ctx(p) ((p)->lex->tok.ctx)
205 static ast_value* parser_const_float(parser_t *parser, double d)
210 for (i = 0; i < vec_size(parser->imm_float); ++i) {
211 const double compare = parser->imm_float[i]->constval.vfloat;
212 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
213 return parser->imm_float[i];
216 ctx = parser_ctx(parser);
218 memset(&ctx, 0, sizeof(ctx));
220 out = ast_value_new(ctx, "#IMMEDIATE", TYPE_FLOAT);
222 out->hasvalue = true;
224 out->constval.vfloat = d;
225 vec_push(parser->imm_float, out);
229 static ast_value* parser_const_float_0(parser_t *parser)
231 if (!parser->imm_float_zero)
232 parser->imm_float_zero = parser_const_float(parser, 0);
233 return parser->imm_float_zero;
236 static ast_value* parser_const_float_neg1(parser_t *parser) {
237 if (!parser->imm_float_neg_one)
238 parser->imm_float_neg_one = parser_const_float(parser, -1);
239 return parser->imm_float_neg_one;
242 static ast_value* parser_const_float_1(parser_t *parser)
244 if (!parser->imm_float_one)
245 parser->imm_float_one = parser_const_float(parser, 1);
246 return parser->imm_float_one;
249 static char *parser_strdup(const char *str)
252 /* actually dup empty strings */
253 char *out = (char*)mem_a(1);
257 return util_strdup(str);
260 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
262 size_t hash = util_hthash(parser->ht_imm_string, str);
264 if ( (out = (ast_value*)util_htgeth(parser->ht_imm_string, str, hash)) ) {
265 if (dotranslate && out->name[0] == '#') {
267 util_snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
268 ast_value_set_name(out, name);
269 out->expression.flags |= AST_FLAG_INCLUDE_DEF;
274 for (i = 0; i < vec_size(parser->imm_string); ++i) {
275 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
276 return parser->imm_string[i];
281 util_snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
282 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
283 out->expression.flags |= AST_FLAG_INCLUDE_DEF;
285 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
287 out->hasvalue = true;
289 out->constval.vstring = parser_strdup(str);
290 vec_push(parser->imm_string, out);
291 util_htseth(parser->ht_imm_string, str, hash, out);
295 static ast_value* parser_const_vector(parser_t *parser, vector v)
299 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
300 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
301 return parser->imm_vector[i];
303 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
305 out->hasvalue = true;
307 out->constval.vvec = v;
308 vec_push(parser->imm_vector, out);
312 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
318 return parser_const_vector(parser, v);
321 static ast_value* parser_const_vector_0(parser_t *parser)
323 if (!parser->imm_vector_zero)
324 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
325 return parser->imm_vector_zero;
328 static ast_expression* parser_find_field(parser_t *parser, const char *name)
330 return ( ast_expression*)util_htget(parser->htfields, name);
333 static ast_expression* parser_find_label(parser_t *parser, const char *name)
336 for(i = 0; i < vec_size(parser->labels); i++)
337 if (!strcmp(parser->labels[i]->name, name))
338 return (ast_expression*)parser->labels[i];
342 static ast_expression* parser_find_global(parser_t *parser, const char *name)
344 ast_expression *var = (ast_expression*)util_htget(parser->aliases, parser_tokval(parser));
347 return (ast_expression*)util_htget(parser->htglobals, name);
350 static ast_expression* parser_find_param(parser_t *parser, const char *name)
354 if (!parser->function)
356 fun = parser->function->vtype;
357 for (i = 0; i < vec_size(fun->expression.params); ++i) {
358 if (!strcmp(fun->expression.params[i]->name, name))
359 return (ast_expression*)(fun->expression.params[i]);
364 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
369 hash = util_hthash(parser->htglobals, name);
372 for (i = vec_size(parser->variables); i > upto;) {
374 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
378 return parser_find_param(parser, name);
381 static ast_expression* parser_find_var(parser_t *parser, const char *name)
385 v = parser_find_local(parser, name, 0, &dummy);
386 if (!v) v = parser_find_global(parser, name);
390 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
394 hash = util_hthash(parser->typedefs[0], name);
396 for (i = vec_size(parser->typedefs); i > upto;) {
398 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
404 /* include intrinsics */
409 size_t etype; /* 0 = expression, others are operators */
413 ast_block *block; /* for commas and function calls */
432 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
443 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
447 e.out = (ast_expression*)v;
454 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
456 e.etype = 1 + (op - operators);
465 static sy_elem syparen(lex_ctx ctx, size_t off) {
476 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
477 * so we need to rotate it to become ent.(foo[n]).
479 static bool rotate_entfield_array_index_nodes(ast_expression **out)
481 ast_array_index *index, *oldindex;
482 ast_entfield *entfield;
486 ast_expression *entity;
488 lex_ctx ctx = ast_ctx(*out);
490 if (!ast_istype(*out, ast_array_index))
492 index = (ast_array_index*)*out;
494 if (!ast_istype(index->array, ast_entfield))
496 entfield = (ast_entfield*)index->array;
498 if (!ast_istype(entfield->field, ast_value))
500 field = (ast_value*)entfield->field;
503 entity = entfield->entity;
507 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
508 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
509 *out = (ast_expression*)entfield;
511 oldindex->array = NULL;
512 oldindex->index = NULL;
513 ast_delete(oldindex);
518 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
520 switch (v->expression.vtype) {
522 return !!v->constval.vfloat;
524 return !!v->constval.vint;
526 if (OPTS_FLAG(CORRECT_LOGIC))
527 return v->constval.vvec.x &&
528 v->constval.vvec.y &&
531 return !!(v->constval.vvec.x);
533 if (!v->constval.vstring)
535 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
537 return !!v->constval.vstring[0];
539 compile_error(ctx, "internal error: immediate_is_true on invalid type");
540 return !!v->constval.vfunc;
544 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
548 ast_expression *out = NULL;
549 ast_expression *exprs[3];
550 ast_block *blocks[3];
551 ast_value *asvalue[3];
552 ast_binstore *asbinstore;
553 size_t i, assignop, addop, subop;
554 qcint generated_op = 0;
559 if (!vec_size(sy->ops)) {
560 parseerror(parser, "internal error: missing operator");
564 if (vec_last(sy->ops).isparen) {
565 parseerror(parser, "unmatched parenthesis");
569 op = &operators[vec_last(sy->ops).etype - 1];
570 ctx = vec_last(sy->ops).ctx;
572 if (vec_size(sy->out) < op->operands) {
573 compile_error(ctx, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
574 op->op, (int)op->id);
578 vec_shrinkby(sy->ops, 1);
580 /* op(:?) has no input and no output */
584 vec_shrinkby(sy->out, op->operands);
585 for (i = 0; i < op->operands; ++i) {
586 exprs[i] = sy->out[vec_size(sy->out)+i].out;
587 blocks[i] = sy->out[vec_size(sy->out)+i].block;
588 asvalue[i] = (ast_value*)exprs[i];
590 if (exprs[i]->vtype == TYPE_NOEXPR &&
591 !(i != 0 && op->id == opid2('?',':')) &&
592 !(i == 1 && op->id == opid1('.')))
594 if (ast_istype(exprs[i], ast_label))
595 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
597 compile_error(ast_ctx(exprs[i]), "not an expression");
598 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
602 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
603 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
607 #define NotSameType(T) \
608 (exprs[0]->vtype != exprs[1]->vtype || \
609 exprs[0]->vtype != T)
610 #define CanConstFold1(A) \
611 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
612 (A)->vtype != TYPE_FUNCTION)
613 #define CanConstFold(A, B) \
614 (CanConstFold1(A) && CanConstFold1(B))
615 #define ConstV(i) (asvalue[(i)]->constval.vvec)
616 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
617 #define ConstS(i) (asvalue[(i)]->constval.vstring)
621 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
625 if (exprs[0]->vtype == TYPE_VECTOR &&
626 exprs[1]->vtype == TYPE_NOEXPR)
628 if (exprs[1] == (ast_expression*)parser->const_vec[0])
629 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
630 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
631 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
632 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
633 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
635 compile_error(ctx, "access to invalid vector component");
639 else if (exprs[0]->vtype == TYPE_ENTITY) {
640 if (exprs[1]->vtype != TYPE_FIELD) {
641 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
644 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
646 else if (exprs[0]->vtype == TYPE_VECTOR) {
647 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
651 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
657 if (exprs[0]->vtype != TYPE_ARRAY &&
658 !(exprs[0]->vtype == TYPE_FIELD &&
659 exprs[0]->next->vtype == TYPE_ARRAY))
661 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
662 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
665 if (exprs[1]->vtype != TYPE_FLOAT) {
666 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
667 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
670 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
671 if (rotate_entfield_array_index_nodes(&out))
674 /* This is not broken in fteqcc anymore */
675 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
676 /* this error doesn't need to make us bail out */
677 (void)!parsewarning(parser, WARN_EXTENSIONS,
678 "accessing array-field members of an entity without parenthesis\n"
679 " -> this is an extension from -std=gmqcc");
686 if (vec_size(sy->paren) && vec_last(sy->paren) == PAREN_FUNC) {
687 vec_push(sy->out, syexp(ctx, exprs[0]));
688 vec_push(sy->out, syexp(ctx, exprs[1]));
689 vec_last(sy->argc)++;
693 if (!ast_block_add_expr(blocks[0], exprs[1]))
696 blocks[0] = ast_block_new(ctx);
697 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
698 !ast_block_add_expr(blocks[0], exprs[1]))
703 ast_block_set_type(blocks[0], exprs[1]);
705 vec_push(sy->out, syblock(ctx, blocks[0]));
712 switch (exprs[0]->vtype) {
714 if (CanConstFold1(exprs[0]))
715 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
717 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
718 (ast_expression*)parser_const_float_0(parser),
722 if (CanConstFold1(exprs[0]))
723 out = (ast_expression*)parser_const_vector_f(parser,
724 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
726 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
727 (ast_expression*)parser_const_vector_0(parser),
731 compile_error(ctx, "invalid types used in expression: cannot negate type %s",
732 type_name[exprs[0]->vtype]);
738 switch (exprs[0]->vtype) {
740 if (CanConstFold1(exprs[0]))
741 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
743 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
746 if (CanConstFold1(exprs[0]))
747 out = (ast_expression*)parser_const_float(parser,
748 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
750 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
753 if (CanConstFold1(exprs[0])) {
754 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
755 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
757 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
759 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
760 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
762 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
765 /* we don't constant-fold NOT for these types */
767 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
770 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
773 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
774 type_name[exprs[0]->vtype]);
780 if (exprs[0]->vtype != exprs[1]->vtype ||
781 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
783 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
784 type_name[exprs[0]->vtype],
785 type_name[exprs[1]->vtype]);
788 switch (exprs[0]->vtype) {
790 if (CanConstFold(exprs[0], exprs[1]))
792 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
795 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
798 if (CanConstFold(exprs[0], exprs[1]))
799 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
801 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
804 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
805 type_name[exprs[0]->vtype],
806 type_name[exprs[1]->vtype]);
811 if (exprs[0]->vtype != exprs[1]->vtype ||
812 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
814 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
815 type_name[exprs[1]->vtype],
816 type_name[exprs[0]->vtype]);
819 switch (exprs[0]->vtype) {
821 if (CanConstFold(exprs[0], exprs[1]))
822 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
824 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
827 if (CanConstFold(exprs[0], exprs[1]))
828 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
830 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
833 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
834 type_name[exprs[1]->vtype],
835 type_name[exprs[0]->vtype]);
840 if (exprs[0]->vtype != exprs[1]->vtype &&
841 !(exprs[0]->vtype == TYPE_VECTOR &&
842 exprs[1]->vtype == TYPE_FLOAT) &&
843 !(exprs[1]->vtype == TYPE_VECTOR &&
844 exprs[0]->vtype == TYPE_FLOAT)
847 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
848 type_name[exprs[1]->vtype],
849 type_name[exprs[0]->vtype]);
852 switch (exprs[0]->vtype) {
854 if (exprs[1]->vtype == TYPE_VECTOR)
856 if (CanConstFold(exprs[0], exprs[1]))
857 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
859 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
863 if (CanConstFold(exprs[0], exprs[1]))
864 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
866 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
870 if (exprs[1]->vtype == TYPE_FLOAT)
872 if (CanConstFold(exprs[0], exprs[1]))
873 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
875 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
879 if (CanConstFold(exprs[0], exprs[1]))
880 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
881 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[0])) {
882 vector vec = ConstV(0);
883 if (!vec.y && !vec.z) { /* 'n 0 0' * v */
884 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
885 out = (ast_expression*)ast_member_new(ctx, exprs[1], 0, NULL);
886 out->node.keep = false;
887 ((ast_member*)out)->rvalue = true;
889 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.x), out);
891 else if (!vec.x && !vec.z) { /* '0 n 0' * v */
892 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
893 out = (ast_expression*)ast_member_new(ctx, exprs[1], 1, NULL);
894 out->node.keep = false;
895 ((ast_member*)out)->rvalue = true;
897 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.y), out);
899 else if (!vec.x && !vec.y) { /* '0 n 0' * v */
900 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
901 out = (ast_expression*)ast_member_new(ctx, exprs[1], 2, NULL);
902 out->node.keep = false;
903 ((ast_member*)out)->rvalue = true;
905 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.z), out);
908 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
910 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[1])) {
911 vector vec = ConstV(1);
912 if (!vec.y && !vec.z) { /* v * 'n 0 0' */
913 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
914 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
915 out->node.keep = false;
916 ((ast_member*)out)->rvalue = true;
918 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.x));
920 else if (!vec.x && !vec.z) { /* v * '0 n 0' */
921 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
922 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
923 out->node.keep = false;
924 ((ast_member*)out)->rvalue = true;
926 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.y));
928 else if (!vec.x && !vec.y) { /* v * '0 n 0' */
929 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
930 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
931 out->node.keep = false;
932 ((ast_member*)out)->rvalue = true;
934 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.z));
937 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
940 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
944 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
945 type_name[exprs[1]->vtype],
946 type_name[exprs[0]->vtype]);
951 if (exprs[1]->vtype != TYPE_FLOAT) {
952 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
953 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
954 compile_error(ctx, "invalid types used in expression: cannot divide tyeps %s and %s", ty1, ty2);
957 if (exprs[0]->vtype == TYPE_FLOAT) {
958 if (CanConstFold(exprs[0], exprs[1]))
959 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
961 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
963 else if (exprs[0]->vtype == TYPE_VECTOR) {
964 if (CanConstFold(exprs[0], exprs[1]))
965 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), 1.0/ConstF(1)));
967 if (CanConstFold1(exprs[1])) {
968 out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
970 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
971 (ast_expression*)parser_const_float_1(parser),
975 compile_error(ctx, "internal error: failed to generate division");
978 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], out);
983 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
984 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
985 compile_error(ctx, "invalid types used in expression: cannot divide tyeps %s and %s", ty1, ty2);
991 if (NotSameType(TYPE_FLOAT)) {
992 compile_error(ctx, "invalid types used in expression: cannot perform modulo operation between types %s and %s",
993 type_name[exprs[0]->vtype],
994 type_name[exprs[1]->vtype]);
997 if (CanConstFold(exprs[0], exprs[1])) {
998 out = (ast_expression*)parser_const_float(parser,
999 (float)(((qcint)ConstF(0)) % ((qcint)ConstF(1))));
1001 /* generate a call to __builtin_mod */
1002 ast_expression *mod = intrin_func(parser, "mod");
1003 ast_call *call = NULL;
1004 if (!mod) return false; /* can return null for missing floor */
1006 call = ast_call_new(parser_ctx(parser), mod);
1007 vec_push(call->params, exprs[0]);
1008 vec_push(call->params, exprs[1]);
1010 out = (ast_expression*)call;
1014 case opid2('%','='):
1015 compile_error(ctx, "%= is unimplemented");
1020 if (NotSameType(TYPE_FLOAT)) {
1021 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
1022 type_name[exprs[0]->vtype],
1023 type_name[exprs[1]->vtype]);
1026 if (CanConstFold(exprs[0], exprs[1]))
1027 out = (ast_expression*)parser_const_float(parser,
1028 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
1029 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
1031 out = (ast_expression*)ast_binary_new(ctx,
1032 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
1033 exprs[0], exprs[1]);
1036 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor via ^");
1039 case opid2('<','<'):
1040 case opid2('>','>'):
1041 if (CanConstFold(exprs[0], exprs[1]) && ! NotSameType(TYPE_FLOAT)) {
1042 if (op->id == opid2('<','<'))
1043 out = (ast_expression*)parser_const_float(parser, (double)((unsigned int)(ConstF(0)) << (unsigned int)(ConstF(1))));
1045 out = (ast_expression*)parser_const_float(parser, (double)((unsigned int)(ConstF(0)) >> (unsigned int)(ConstF(1))));
1048 case opid3('<','<','='):
1049 case opid3('>','>','='):
1050 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
1053 case opid2('|','|'):
1054 generated_op += 1; /* INSTR_OR */
1055 case opid2('&','&'):
1056 generated_op += INSTR_AND;
1057 if (CanConstFold(exprs[0], exprs[1]))
1059 if (OPTS_FLAG(PERL_LOGIC)) {
1060 if (immediate_is_true(ctx, asvalue[0]))
1064 out = (ast_expression*)parser_const_float(parser,
1065 ( (generated_op == INSTR_OR)
1066 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
1067 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
1072 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
1073 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1074 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1075 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
1078 for (i = 0; i < 2; ++i) {
1079 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->vtype == TYPE_VECTOR) {
1080 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
1082 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1084 exprs[i] = out; out = NULL;
1085 if (OPTS_FLAG(PERL_LOGIC)) {
1086 /* here we want to keep the right expressions' type */
1090 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->vtype == TYPE_STRING) {
1091 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
1093 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1095 exprs[i] = out; out = NULL;
1096 if (OPTS_FLAG(PERL_LOGIC)) {
1097 /* here we want to keep the right expressions' type */
1102 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1106 case opid2('?',':'):
1107 if (vec_last(sy->paren) != PAREN_TERNARY2) {
1108 compile_error(ctx, "mismatched parenthesis/ternary");
1112 if (!ast_compare_type(exprs[1], exprs[2])) {
1113 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
1114 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
1115 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
1118 if (CanConstFold1(exprs[0]))
1119 out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
1121 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
1124 case opid2('*', '*'):
1125 if (NotSameType(TYPE_FLOAT)) {
1126 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1127 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1128 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
1134 if (CanConstFold(exprs[0], exprs[1])) {
1135 out = (ast_expression*)parser_const_float(parser, powf(ConstF(0), ConstF(1)));
1137 ast_call *gencall = ast_call_new(parser_ctx(parser), intrin_func(parser, "pow"));
1138 vec_push(gencall->params, exprs[0]);
1139 vec_push(gencall->params, exprs[1]);
1140 out = (ast_expression*)gencall;
1144 case opid3('<','=','>'): /* -1, 0, or 1 */
1145 if (NotSameType(TYPE_FLOAT)) {
1146 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1147 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1148 compile_error(ctx, "invalid types used in comparision: %s and %s",
1154 if (CanConstFold(exprs[0], exprs[1])) {
1155 if (ConstF(0) < ConstF(1))
1156 out = (ast_expression*)parser_const_float_neg1(parser);
1157 else if (ConstF(0) == ConstF(1))
1158 out = (ast_expression*)parser_const_float_0(parser);
1159 else if (ConstF(0) > ConstF(1))
1160 out = (ast_expression*)parser_const_float_1(parser);
1162 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
1164 eq->refs = (ast_binary_ref)false; /* references nothing */
1167 out = (ast_expression*)ast_ternary_new(ctx,
1168 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
1170 (ast_expression*)parser_const_float_neg1(parser),
1173 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
1175 (ast_expression*)parser_const_float_0(parser),
1178 (ast_expression*)parser_const_float_1(parser)
1188 generated_op += 1; /* INSTR_GT */
1190 generated_op += 1; /* INSTR_LT */
1191 case opid2('>', '='):
1192 generated_op += 1; /* INSTR_GE */
1193 case opid2('<', '='):
1194 generated_op += INSTR_LE;
1195 if (NotSameType(TYPE_FLOAT)) {
1196 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1197 type_name[exprs[0]->vtype],
1198 type_name[exprs[1]->vtype]);
1201 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1203 case opid2('!', '='):
1204 if (exprs[0]->vtype != exprs[1]->vtype) {
1205 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1206 type_name[exprs[0]->vtype],
1207 type_name[exprs[1]->vtype]);
1210 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->vtype], exprs[0], exprs[1]);
1212 case opid2('=', '='):
1213 if (exprs[0]->vtype != exprs[1]->vtype) {
1214 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1215 type_name[exprs[0]->vtype],
1216 type_name[exprs[1]->vtype]);
1219 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->vtype], exprs[0], exprs[1]);
1223 if (ast_istype(exprs[0], ast_entfield)) {
1224 ast_expression *field = ((ast_entfield*)exprs[0])->field;
1225 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1226 exprs[0]->vtype == TYPE_FIELD &&
1227 exprs[0]->next->vtype == TYPE_VECTOR)
1229 assignop = type_storep_instr[TYPE_VECTOR];
1232 assignop = type_storep_instr[exprs[0]->vtype];
1233 if (assignop == VINSTR_END || !ast_compare_type(field->next, exprs[1]))
1235 ast_type_to_string(field->next, ty1, sizeof(ty1));
1236 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1237 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1238 field->next->vtype == TYPE_FUNCTION &&
1239 exprs[1]->vtype == TYPE_FUNCTION)
1241 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1242 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1245 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1250 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1251 exprs[0]->vtype == TYPE_FIELD &&
1252 exprs[0]->next->vtype == TYPE_VECTOR)
1254 assignop = type_store_instr[TYPE_VECTOR];
1257 assignop = type_store_instr[exprs[0]->vtype];
1260 if (assignop == VINSTR_END) {
1261 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1262 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1263 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1265 else if (!ast_compare_type(exprs[0], exprs[1]))
1267 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1268 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1269 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1270 exprs[0]->vtype == TYPE_FUNCTION &&
1271 exprs[1]->vtype == TYPE_FUNCTION)
1273 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1274 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1277 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1280 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1281 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1283 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1285 case opid3('+','+','P'):
1286 case opid3('-','-','P'):
1288 if (exprs[0]->vtype != TYPE_FLOAT) {
1289 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1290 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
1293 if (op->id == opid3('+','+','P'))
1294 addop = INSTR_ADD_F;
1296 addop = INSTR_SUB_F;
1297 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1298 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1300 if (ast_istype(exprs[0], ast_entfield)) {
1301 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1303 (ast_expression*)parser_const_float_1(parser));
1305 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1307 (ast_expression*)parser_const_float_1(parser));
1310 case opid3('S','+','+'):
1311 case opid3('S','-','-'):
1313 if (exprs[0]->vtype != TYPE_FLOAT) {
1314 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1315 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
1318 if (op->id == opid3('S','+','+')) {
1319 addop = INSTR_ADD_F;
1320 subop = INSTR_SUB_F;
1322 addop = INSTR_SUB_F;
1323 subop = INSTR_ADD_F;
1325 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1326 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1328 if (ast_istype(exprs[0], ast_entfield)) {
1329 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1331 (ast_expression*)parser_const_float_1(parser));
1333 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1335 (ast_expression*)parser_const_float_1(parser));
1339 out = (ast_expression*)ast_binary_new(ctx, subop,
1341 (ast_expression*)parser_const_float_1(parser));
1343 case opid2('+','='):
1344 case opid2('-','='):
1345 if (exprs[0]->vtype != exprs[1]->vtype ||
1346 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
1348 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1349 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1350 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1354 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1355 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1357 if (ast_istype(exprs[0], ast_entfield))
1358 assignop = type_storep_instr[exprs[0]->vtype];
1360 assignop = type_store_instr[exprs[0]->vtype];
1361 switch (exprs[0]->vtype) {
1363 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1364 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1365 exprs[0], exprs[1]);
1368 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1369 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1370 exprs[0], exprs[1]);
1373 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1374 type_name[exprs[0]->vtype],
1375 type_name[exprs[1]->vtype]);
1379 case opid2('*','='):
1380 case opid2('/','='):
1381 if (exprs[1]->vtype != TYPE_FLOAT ||
1382 !(exprs[0]->vtype == TYPE_FLOAT ||
1383 exprs[0]->vtype == TYPE_VECTOR))
1385 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1386 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1387 compile_error(ctx, "invalid types used in expression: %s and %s",
1391 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1392 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1394 if (ast_istype(exprs[0], ast_entfield))
1395 assignop = type_storep_instr[exprs[0]->vtype];
1397 assignop = type_store_instr[exprs[0]->vtype];
1398 switch (exprs[0]->vtype) {
1400 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1401 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1402 exprs[0], exprs[1]);
1405 if (op->id == opid2('*','=')) {
1406 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1407 exprs[0], exprs[1]);
1409 /* there's no DIV_VF */
1410 if (CanConstFold1(exprs[1])) {
1411 out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
1413 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1414 (ast_expression*)parser_const_float_1(parser),
1418 compile_error(ctx, "internal error: failed to generate division");
1421 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1426 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1427 type_name[exprs[0]->vtype],
1428 type_name[exprs[1]->vtype]);
1432 case opid2('&','='):
1433 case opid2('|','='):
1434 if (NotSameType(TYPE_FLOAT)) {
1435 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1436 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1437 compile_error(ctx, "invalid types used in expression: %s and %s",
1441 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1442 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1444 if (ast_istype(exprs[0], ast_entfield))
1445 assignop = type_storep_instr[exprs[0]->vtype];
1447 assignop = type_store_instr[exprs[0]->vtype];
1448 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1449 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1450 exprs[0], exprs[1]);
1452 case opid3('&','~','='):
1453 /* This is like: a &= ~(b);
1454 * But QC has no bitwise-not, so we implement it as
1457 if (NotSameType(TYPE_FLOAT)) {
1458 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1459 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1460 compile_error(ctx, "invalid types used in expression: %s and %s",
1464 if (ast_istype(exprs[0], ast_entfield))
1465 assignop = type_storep_instr[exprs[0]->vtype];
1467 assignop = type_store_instr[exprs[0]->vtype];
1468 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1471 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1472 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1474 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1475 asbinstore->keep_dest = true;
1476 out = (ast_expression*)asbinstore;
1479 case opid2('~', 'P'):
1480 if (exprs[0]->vtype != TYPE_FLOAT) {
1481 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1482 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1486 if(CanConstFold1(exprs[0]))
1487 out = (ast_expression*)parser_const_float(parser, ~(qcint)ConstF(0));
1489 out = (ast_expression*)
1490 ast_binary_new(ctx, INSTR_SUB_F, (ast_expression*)parser_const_float_neg1(parser), exprs[0]);
1496 compile_error(ctx, "failed to apply operator %s", op->op);
1500 vec_push(sy->out, syexp(ctx, out));
1504 static bool parser_close_call(parser_t *parser, shunt *sy)
1506 /* was a function call */
1507 ast_expression *fun;
1508 ast_value *funval = NULL;
1512 size_t paramcount, i;
1514 fid = vec_last(sy->ops).off;
1515 vec_shrinkby(sy->ops, 1);
1517 /* out[fid] is the function
1518 * everything above is parameters...
1520 if (!vec_size(sy->argc)) {
1521 parseerror(parser, "internal error: no argument counter available");
1525 paramcount = vec_last(sy->argc);
1528 if (vec_size(sy->out) < fid) {
1529 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1530 (unsigned long)vec_size(sy->out),
1532 (unsigned long)paramcount);
1536 fun = sy->out[fid].out;
1538 if (fun == intrinsic_debug_typestring) {
1540 if (fid+2 != vec_size(sy->out) ||
1541 vec_last(sy->out).block)
1543 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1546 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1547 ast_unref(vec_last(sy->out).out);
1548 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1549 (ast_expression*)parser_const_string(parser, ty, false));
1550 vec_shrinkby(sy->out, 1);
1554 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1558 if (fid+1 < vec_size(sy->out))
1561 if (fid+1 + paramcount != vec_size(sy->out)) {
1562 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1563 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1567 for (i = 0; i < paramcount; ++i)
1568 vec_push(call->params, sy->out[fid+1 + i].out);
1569 vec_shrinkby(sy->out, paramcount);
1570 (void)!ast_call_check_types(call);
1571 if (parser->max_param_count < paramcount)
1572 parser->max_param_count = paramcount;
1574 if (ast_istype(fun, ast_value)) {
1575 funval = (ast_value*)fun;
1576 if ((fun->flags & AST_FLAG_VARIADIC) &&
1577 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1579 call->va_count = (ast_expression*)parser_const_float(parser, (double)paramcount);
1583 /* overwrite fid, the function, with a call */
1584 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1586 if (fun->vtype != TYPE_FUNCTION) {
1587 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1592 parseerror(parser, "could not determine function return type");
1595 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1597 if (fun->flags & AST_FLAG_DEPRECATED) {
1599 return !parsewarning(parser, WARN_DEPRECATED,
1600 "call to function (which is marked deprecated)\n",
1601 "-> it has been declared here: %s:%i",
1602 ast_ctx(fun).file, ast_ctx(fun).line);
1605 return !parsewarning(parser, WARN_DEPRECATED,
1606 "call to `%s` (which is marked deprecated)\n"
1607 "-> `%s` declared here: %s:%i",
1608 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1610 return !parsewarning(parser, WARN_DEPRECATED,
1611 "call to `%s` (deprecated: %s)\n"
1612 "-> `%s` declared here: %s:%i",
1613 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1617 if (vec_size(fun->params) != paramcount &&
1618 !((fun->flags & AST_FLAG_VARIADIC) &&
1619 vec_size(fun->params) < paramcount))
1621 const char *fewmany = (vec_size(fun->params) > paramcount) ? "few" : "many";
1623 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1624 "too %s parameters for call to %s: expected %i, got %i\n"
1625 " -> `%s` has been declared here: %s:%i",
1626 fewmany, fval->name, (int)vec_size(fun->params), (int)paramcount,
1627 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1629 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1630 "too %s parameters for function call: expected %i, got %i\n"
1631 " -> it has been declared here: %s:%i",
1632 fewmany, (int)vec_size(fun->params), (int)paramcount,
1633 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1640 static bool parser_close_paren(parser_t *parser, shunt *sy)
1642 if (!vec_size(sy->ops)) {
1643 parseerror(parser, "unmatched closing paren");
1647 while (vec_size(sy->ops)) {
1648 if (vec_last(sy->ops).isparen) {
1649 if (vec_last(sy->paren) == PAREN_FUNC) {
1651 if (!parser_close_call(parser, sy))
1655 if (vec_last(sy->paren) == PAREN_EXPR) {
1657 if (!vec_size(sy->out)) {
1658 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1659 vec_shrinkby(sy->ops, 1);
1662 vec_shrinkby(sy->ops, 1);
1665 if (vec_last(sy->paren) == PAREN_INDEX) {
1667 /* pop off the parenthesis */
1668 vec_shrinkby(sy->ops, 1);
1669 /* then apply the index operator */
1670 if (!parser_sy_apply_operator(parser, sy))
1674 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1675 vec_last(sy->paren) = PAREN_TERNARY2;
1676 /* pop off the parenthesis */
1677 vec_shrinkby(sy->ops, 1);
1680 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1683 if (!parser_sy_apply_operator(parser, sy))
1689 static void parser_reclassify_token(parser_t *parser)
1692 for (i = 0; i < operator_count; ++i) {
1693 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1694 parser->tok = TOKEN_OPERATOR;
1700 static ast_expression* parse_vararg_do(parser_t *parser)
1702 ast_expression *idx, *out;
1704 ast_value *funtype = parser->function->vtype;
1706 lex_ctx ctx = parser_ctx(parser);
1708 if (!parser_next(parser) || parser->tok != '(') {
1709 parseerror(parser, "expected parameter index and type in parenthesis");
1712 if (!parser_next(parser)) {
1713 parseerror(parser, "error parsing parameter index");
1717 idx = parse_expression_leave(parser, true, false, false);
1721 if (parser->tok != ',') {
1723 parseerror(parser, "expected comma after parameter index");
1727 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1729 parseerror(parser, "expected typename for vararg");
1733 typevar = parse_typename(parser, NULL, NULL);
1739 if (parser->tok != ')') {
1741 ast_delete(typevar);
1742 parseerror(parser, "expected closing paren");
1747 if (!parser_next(parser)) {
1749 ast_delete(typevar);
1750 parseerror(parser, "parse error after vararg");
1755 if (!parser->function->varargs) {
1757 ast_delete(typevar);
1758 parseerror(parser, "function has no variable argument list");
1762 if (funtype->expression.varparam &&
1763 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1767 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1768 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1769 compile_error(ast_ctx(typevar),
1770 "function was declared to take varargs of type `%s`, requested type is: %s",
1774 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1775 ast_type_adopt(out, typevar);
1776 ast_delete(typevar);
1780 static ast_expression* parse_vararg(parser_t *parser)
1782 bool old_noops = parser->lex->flags.noops;
1784 ast_expression *out;
1786 parser->lex->flags.noops = true;
1787 out = parse_vararg_do(parser);
1789 parser->lex->flags.noops = old_noops;
1793 /* not to be exposed */
1794 extern bool ftepp_predef_exists(const char *name);
1796 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1798 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1799 parser->tok == TOKEN_IDENT &&
1800 !strcmp(parser_tokval(parser), "_"))
1802 /* a translatable string */
1805 parser->lex->flags.noops = true;
1806 if (!parser_next(parser) || parser->tok != '(') {
1807 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1810 parser->lex->flags.noops = false;
1811 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1812 parseerror(parser, "expected a constant string in translatable-string extension");
1815 val = parser_const_string(parser, parser_tokval(parser), true);
1818 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1820 if (!parser_next(parser) || parser->tok != ')') {
1821 parseerror(parser, "expected closing paren after translatable string");
1826 else if (parser->tok == TOKEN_DOTS)
1829 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1830 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1833 va = parse_vararg(parser);
1836 vec_push(sy->out, syexp(parser_ctx(parser), va));
1839 else if (parser->tok == TOKEN_FLOATCONST) {
1841 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1844 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1847 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1849 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1852 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1855 else if (parser->tok == TOKEN_STRINGCONST) {
1857 val = parser_const_string(parser, parser_tokval(parser), false);
1860 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1863 else if (parser->tok == TOKEN_VECTORCONST) {
1865 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1868 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1871 else if (parser->tok == TOKEN_IDENT)
1873 const char *ctoken = parser_tokval(parser);
1874 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1875 ast_expression *var;
1876 /* a_vector.{x,y,z} */
1877 if (!vec_size(sy->ops) ||
1878 !vec_last(sy->ops).etype ||
1879 operators[vec_last(sy->ops).etype-1].id != opid1('.') ||
1880 (prev >= intrinsic_debug_typestring &&
1881 prev <= intrinsic_debug_typestring))
1883 /* When adding more intrinsics, fix the above condition */
1886 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1888 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1890 var = parser_find_var(parser, parser_tokval(parser));
1892 var = parser_find_field(parser, parser_tokval(parser));
1894 if (!var && with_labels) {
1895 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1897 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1898 var = (ast_expression*)lbl;
1899 vec_push(parser->labels, lbl);
1902 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
1903 var = (ast_expression*)parser_const_string(parser, parser->function->name, false);
1906 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1907 var = (ast_expression*)intrinsic_debug_typestring;
1909 /* now we try for the real intrinsic hashtable. If the string
1910 * begins with __builtin, we simply skip past it, otherwise we
1911 * use the identifier as is.
1913 else if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
1914 var = intrin_func(parser, parser_tokval(parser) + 10 /* skip __builtin */);
1918 char *correct = NULL;
1922 * sometimes people use preprocessing predefs without enabling them
1923 * i've done this thousands of times already myself. Lets check for
1924 * it in the predef table. And diagnose it better :)
1926 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
1927 parseerror(parser, "unexpected ident: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1932 * TODO: determine the best score for the identifier: be it
1933 * a variable, a field.
1935 * We should also consider adding correction tables for
1936 * other things as well.
1938 if (OPTS_OPTION_BOOL(OPTION_CORRECTION)) {
1940 correct_init(&corr);
1942 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1943 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1944 if (strcmp(correct, parser_tokval(parser))) {
1946 } else if (correct) {
1951 correct_free(&corr);
1954 parseerror(parser, "unexpected ident: %s (did you mean %s?)", parser_tokval(parser), correct);
1959 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1965 if (ast_istype(var, ast_value)) {
1966 ((ast_value*)var)->uses++;
1968 else if (ast_istype(var, ast_member)) {
1969 ast_member *mem = (ast_member*)var;
1970 if (ast_istype(mem->owner, ast_value))
1971 ((ast_value*)(mem->owner))->uses++;
1974 vec_push(sy->out, syexp(parser_ctx(parser), var));
1977 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1981 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1983 ast_expression *expr = NULL;
1986 bool wantop = false;
1987 /* only warn once about an assignment in a truth value because the current code
1988 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1990 bool warn_truthvalue = true;
1992 /* count the parens because an if starts with one, so the
1993 * end of a condition is an unmatched closing paren
1997 memset(&sy, 0, sizeof(sy));
1999 parser->lex->flags.noops = false;
2001 parser_reclassify_token(parser);
2005 if (parser->tok == TOKEN_TYPENAME) {
2006 parseerror(parser, "unexpected typename");
2010 if (parser->tok == TOKEN_OPERATOR)
2012 /* classify the operator */
2013 const oper_info *op;
2014 const oper_info *olast = NULL;
2016 for (o = 0; o < operator_count; ++o) {
2017 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
2018 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
2019 !strcmp(parser_tokval(parser), operators[o].op))
2024 if (o == operator_count) {
2025 compile_error(parser_ctx(parser), "unknown operator: %s", parser_tokval(parser));
2028 /* found an operator */
2031 /* when declaring variables, a comma starts a new variable */
2032 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
2033 /* fixup the token */
2038 /* a colon without a pervious question mark cannot be a ternary */
2039 if (!ternaries && op->id == opid2(':','?')) {
2044 if (op->id == opid1(',')) {
2045 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2046 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
2050 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2051 olast = &operators[vec_last(sy.ops).etype-1];
2053 #define IsAssignOp(x) (\
2054 (x) == opid1('=') || \
2055 (x) == opid2('+','=') || \
2056 (x) == opid2('-','=') || \
2057 (x) == opid2('*','=') || \
2058 (x) == opid2('/','=') || \
2059 (x) == opid2('%','=') || \
2060 (x) == opid2('&','=') || \
2061 (x) == opid2('|','=') || \
2062 (x) == opid3('&','~','=') \
2064 if (warn_truthvalue) {
2065 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
2066 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
2067 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
2070 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
2071 warn_truthvalue = false;
2076 (op->prec < olast->prec) ||
2077 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
2079 if (!parser_sy_apply_operator(parser, &sy))
2081 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2082 olast = &operators[vec_last(sy.ops).etype-1];
2087 if (op->id == opid1('(')) {
2089 size_t sycount = vec_size(sy.out);
2090 /* we expected an operator, this is the function-call operator */
2091 vec_push(sy.paren, PAREN_FUNC);
2092 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
2093 vec_push(sy.argc, 0);
2095 vec_push(sy.paren, PAREN_EXPR);
2096 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2099 } else if (op->id == opid1('[')) {
2101 parseerror(parser, "unexpected array subscript");
2104 vec_push(sy.paren, PAREN_INDEX);
2105 /* push both the operator and the paren, this makes life easier */
2106 vec_push(sy.ops, syop(parser_ctx(parser), op));
2107 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2109 } else if (op->id == opid2('?',':')) {
2110 vec_push(sy.ops, syop(parser_ctx(parser), op));
2111 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2114 vec_push(sy.paren, PAREN_TERNARY1);
2115 } else if (op->id == opid2(':','?')) {
2116 if (!vec_size(sy.paren)) {
2117 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2120 if (vec_last(sy.paren) != PAREN_TERNARY1) {
2121 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2124 if (!parser_close_paren(parser, &sy))
2126 vec_push(sy.ops, syop(parser_ctx(parser), op));
2130 vec_push(sy.ops, syop(parser_ctx(parser), op));
2131 wantop = !!(op->flags & OP_SUFFIX);
2134 else if (parser->tok == ')') {
2135 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2136 if (!parser_sy_apply_operator(parser, &sy))
2139 if (!vec_size(sy.paren))
2142 if (vec_last(sy.paren) == PAREN_TERNARY1) {
2143 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
2146 if (!parser_close_paren(parser, &sy))
2149 /* must be a function call without parameters */
2150 if (vec_last(sy.paren) != PAREN_FUNC) {
2151 parseerror(parser, "closing paren in invalid position");
2154 if (!parser_close_paren(parser, &sy))
2159 else if (parser->tok == '(') {
2160 parseerror(parser, "internal error: '(' should be classified as operator");
2163 else if (parser->tok == '[') {
2164 parseerror(parser, "internal error: '[' should be classified as operator");
2167 else if (parser->tok == ']') {
2168 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2169 if (!parser_sy_apply_operator(parser, &sy))
2172 if (!vec_size(sy.paren))
2174 if (vec_last(sy.paren) != PAREN_INDEX) {
2175 parseerror(parser, "mismatched parentheses, unexpected ']'");
2178 if (!parser_close_paren(parser, &sy))
2183 if (!parse_sya_operand(parser, &sy, with_labels))
2186 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
2187 vec_last(sy.argc)++;
2192 /* in this case we might want to allow constant string concatenation */
2193 bool concatenated = false;
2194 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
2195 ast_expression *lexpr = vec_last(sy.out).out;
2196 if (ast_istype(lexpr, ast_value)) {
2197 ast_value *last = (ast_value*)lexpr;
2198 if (last->isimm == true && last->cvq == CV_CONST &&
2199 last->hasvalue && last->expression.vtype == TYPE_STRING)
2201 char *newstr = NULL;
2202 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
2203 vec_last(sy.out).out = (ast_expression*)parser_const_string(parser, newstr, false);
2205 concatenated = true;
2209 if (!concatenated) {
2210 parseerror(parser, "expected operator or end of statement");
2215 if (!parser_next(parser)) {
2218 if (parser->tok == ';' ||
2219 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
2220 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
2226 while (vec_size(sy.ops)) {
2227 if (!parser_sy_apply_operator(parser, &sy))
2231 parser->lex->flags.noops = true;
2232 if (vec_size(sy.out) != 1) {
2233 parseerror(parser, "expression with not 1 but %lu output values...", (unsigned long) vec_size(sy.out));
2236 expr = sy.out[0].out;
2239 if (vec_size(sy.paren)) {
2240 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
2248 parser->lex->flags.noops = true;
2249 for (i = 0; i < vec_size(sy.out); ++i) {
2251 ast_unref(sy.out[i].out);
2260 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
2262 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
2265 if (parser->tok != ';') {
2266 parseerror(parser, "semicolon expected after expression");
2270 if (!parser_next(parser)) {
2277 static void parser_enterblock(parser_t *parser)
2279 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2280 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2281 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2282 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2283 vec_push(parser->_block_ctx, parser_ctx(parser));
2286 vec_push(parser->correct_variables, correct_trie_new());
2287 vec_push(parser->correct_variables_score, NULL);
2290 static bool parser_leaveblock(parser_t *parser)
2293 size_t locals, typedefs;
2295 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2296 parseerror(parser, "internal error: parser_leaveblock with no block");
2300 util_htdel(vec_last(parser->variables));
2301 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2303 vec_pop(parser->variables);
2304 vec_pop(parser->correct_variables);
2305 vec_pop(parser->correct_variables_score);
2306 if (!vec_size(parser->_blocklocals)) {
2307 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2311 locals = vec_last(parser->_blocklocals);
2312 vec_pop(parser->_blocklocals);
2313 while (vec_size(parser->_locals) != locals) {
2314 ast_expression *e = vec_last(parser->_locals);
2315 ast_value *v = (ast_value*)e;
2316 vec_pop(parser->_locals);
2317 if (ast_istype(e, ast_value) && !v->uses) {
2318 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2323 typedefs = vec_last(parser->_blocktypedefs);
2324 while (vec_size(parser->_typedefs) != typedefs) {
2325 ast_delete(vec_last(parser->_typedefs));
2326 vec_pop(parser->_typedefs);
2328 util_htdel(vec_last(parser->typedefs));
2329 vec_pop(parser->typedefs);
2331 vec_pop(parser->_block_ctx);
2336 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2338 vec_push(parser->_locals, e);
2339 util_htset(vec_last(parser->variables), name, (void*)e);
2343 vec_last(parser->correct_variables),
2344 &vec_last(parser->correct_variables_score),
2349 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2351 vec_push(parser->globals, e);
2352 util_htset(parser->htglobals, name, e);
2356 parser->correct_variables[0],
2357 &parser->correct_variables_score[0],
2362 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2366 ast_expression *prev;
2368 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2370 ast_type_to_string(cond, ty, sizeof(ty));
2371 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2374 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2377 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2380 parseerror(parser, "internal error: failed to process condition");
2385 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2387 /* vector types need to be cast to true booleans */
2388 ast_binary *bin = (ast_binary*)cond;
2389 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2391 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2393 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2396 parseerror(parser, "internal error: failed to process condition");
2403 unary = (ast_unary*)cond;
2404 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2406 cond = unary->operand;
2407 unary->operand = NULL;
2410 unary = (ast_unary*)cond;
2414 parseerror(parser, "internal error: failed to process condition");
2416 if (ifnot) *_ifnot = !*_ifnot;
2420 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2423 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2426 lex_ctx ctx = parser_ctx(parser);
2428 (void)block; /* not touching */
2430 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2431 if (!parser_next(parser)) {
2432 parseerror(parser, "expected condition or 'not'");
2435 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2437 if (!parser_next(parser)) {
2438 parseerror(parser, "expected condition in parenthesis");
2442 if (parser->tok != '(') {
2443 parseerror(parser, "expected 'if' condition in parenthesis");
2446 /* parse into the expression */
2447 if (!parser_next(parser)) {
2448 parseerror(parser, "expected 'if' condition after opening paren");
2451 /* parse the condition */
2452 cond = parse_expression_leave(parser, false, true, false);
2456 if (parser->tok != ')') {
2457 parseerror(parser, "expected closing paren after 'if' condition");
2461 /* parse into the 'then' branch */
2462 if (!parser_next(parser)) {
2463 parseerror(parser, "expected statement for on-true branch of 'if'");
2467 if (!parse_statement_or_block(parser, &ontrue)) {
2472 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2473 /* check for an else */
2474 if (!strcmp(parser_tokval(parser), "else")) {
2475 /* parse into the 'else' branch */
2476 if (!parser_next(parser)) {
2477 parseerror(parser, "expected on-false branch after 'else'");
2482 if (!parse_statement_or_block(parser, &onfalse)) {
2489 cond = process_condition(parser, cond, &ifnot);
2491 if (ontrue) ast_delete(ontrue);
2492 if (onfalse) ast_delete(onfalse);
2497 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2499 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2500 *out = (ast_expression*)ifthen;
2504 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2505 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2510 /* skip the 'while' and get the body */
2511 if (!parser_next(parser)) {
2512 if (OPTS_FLAG(LOOP_LABELS))
2513 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2515 parseerror(parser, "expected 'while' condition in parenthesis");
2519 if (parser->tok == ':') {
2520 if (!OPTS_FLAG(LOOP_LABELS))
2521 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2522 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2523 parseerror(parser, "expected loop label");
2526 label = util_strdup(parser_tokval(parser));
2527 if (!parser_next(parser)) {
2529 parseerror(parser, "expected 'while' condition in parenthesis");
2534 if (parser->tok != '(') {
2535 parseerror(parser, "expected 'while' condition in parenthesis");
2539 vec_push(parser->breaks, label);
2540 vec_push(parser->continues, label);
2542 rv = parse_while_go(parser, block, out);
2545 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2546 parseerror(parser, "internal error: label stack corrupted");
2552 vec_pop(parser->breaks);
2553 vec_pop(parser->continues);
2558 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2561 ast_expression *cond, *ontrue;
2565 lex_ctx ctx = parser_ctx(parser);
2567 (void)block; /* not touching */
2569 /* parse into the expression */
2570 if (!parser_next(parser)) {
2571 parseerror(parser, "expected 'while' condition after opening paren");
2574 /* parse the condition */
2575 cond = parse_expression_leave(parser, false, true, false);
2579 if (parser->tok != ')') {
2580 parseerror(parser, "expected closing paren after 'while' condition");
2584 /* parse into the 'then' branch */
2585 if (!parser_next(parser)) {
2586 parseerror(parser, "expected while-loop body");
2590 if (!parse_statement_or_block(parser, &ontrue)) {
2595 cond = process_condition(parser, cond, &ifnot);
2600 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2601 *out = (ast_expression*)aloop;
2605 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2606 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2611 /* skip the 'do' and get the body */
2612 if (!parser_next(parser)) {
2613 if (OPTS_FLAG(LOOP_LABELS))
2614 parseerror(parser, "expected loop label or body");
2616 parseerror(parser, "expected loop body");
2620 if (parser->tok == ':') {
2621 if (!OPTS_FLAG(LOOP_LABELS))
2622 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2623 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2624 parseerror(parser, "expected loop label");
2627 label = util_strdup(parser_tokval(parser));
2628 if (!parser_next(parser)) {
2630 parseerror(parser, "expected loop body");
2635 vec_push(parser->breaks, label);
2636 vec_push(parser->continues, label);
2638 rv = parse_dowhile_go(parser, block, out);
2641 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2642 parseerror(parser, "internal error: label stack corrupted");
2648 vec_pop(parser->breaks);
2649 vec_pop(parser->continues);
2654 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2657 ast_expression *cond, *ontrue;
2661 lex_ctx ctx = parser_ctx(parser);
2663 (void)block; /* not touching */
2665 if (!parse_statement_or_block(parser, &ontrue))
2668 /* expect the "while" */
2669 if (parser->tok != TOKEN_KEYWORD ||
2670 strcmp(parser_tokval(parser), "while"))
2672 parseerror(parser, "expected 'while' and condition");
2677 /* skip the 'while' and check for opening paren */
2678 if (!parser_next(parser) || parser->tok != '(') {
2679 parseerror(parser, "expected 'while' condition in parenthesis");
2683 /* parse into the expression */
2684 if (!parser_next(parser)) {
2685 parseerror(parser, "expected 'while' condition after opening paren");
2689 /* parse the condition */
2690 cond = parse_expression_leave(parser, false, true, false);
2694 if (parser->tok != ')') {
2695 parseerror(parser, "expected closing paren after 'while' condition");
2701 if (!parser_next(parser) || parser->tok != ';') {
2702 parseerror(parser, "expected semicolon after condition");
2708 if (!parser_next(parser)) {
2709 parseerror(parser, "parse error");
2715 cond = process_condition(parser, cond, &ifnot);
2720 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2721 *out = (ast_expression*)aloop;
2725 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2726 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2731 /* skip the 'for' and check for opening paren */
2732 if (!parser_next(parser)) {
2733 if (OPTS_FLAG(LOOP_LABELS))
2734 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2736 parseerror(parser, "expected 'for' expressions in parenthesis");
2740 if (parser->tok == ':') {
2741 if (!OPTS_FLAG(LOOP_LABELS))
2742 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2743 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2744 parseerror(parser, "expected loop label");
2747 label = util_strdup(parser_tokval(parser));
2748 if (!parser_next(parser)) {
2750 parseerror(parser, "expected 'for' expressions in parenthesis");
2755 if (parser->tok != '(') {
2756 parseerror(parser, "expected 'for' expressions in parenthesis");
2760 vec_push(parser->breaks, label);
2761 vec_push(parser->continues, label);
2763 rv = parse_for_go(parser, block, out);
2766 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2767 parseerror(parser, "internal error: label stack corrupted");
2773 vec_pop(parser->breaks);
2774 vec_pop(parser->continues);
2778 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2781 ast_expression *initexpr, *cond, *increment, *ontrue;
2786 lex_ctx ctx = parser_ctx(parser);
2788 parser_enterblock(parser);
2795 /* parse into the expression */
2796 if (!parser_next(parser)) {
2797 parseerror(parser, "expected 'for' initializer after opening paren");
2802 if (parser->tok == TOKEN_IDENT)
2803 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2805 if (typevar || parser->tok == TOKEN_TYPENAME) {
2807 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2808 if (parsewarning(parser, WARN_EXTENSIONS,
2809 "current standard does not allow variable declarations in for-loop initializers"))
2813 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2816 else if (parser->tok != ';')
2818 initexpr = parse_expression_leave(parser, false, false, false);
2823 /* move on to condition */
2824 if (parser->tok != ';') {
2825 parseerror(parser, "expected semicolon after for-loop initializer");
2828 if (!parser_next(parser)) {
2829 parseerror(parser, "expected for-loop condition");
2833 /* parse the condition */
2834 if (parser->tok != ';') {
2835 cond = parse_expression_leave(parser, false, true, false);
2840 /* move on to incrementor */
2841 if (parser->tok != ';') {
2842 parseerror(parser, "expected semicolon after for-loop initializer");
2845 if (!parser_next(parser)) {
2846 parseerror(parser, "expected for-loop condition");
2850 /* parse the incrementor */
2851 if (parser->tok != ')') {
2852 lex_ctx condctx = parser_ctx(parser);
2853 increment = parse_expression_leave(parser, false, false, false);
2856 if (!ast_side_effects(increment)) {
2857 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2863 if (parser->tok != ')') {
2864 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2867 /* parse into the 'then' branch */
2868 if (!parser_next(parser)) {
2869 parseerror(parser, "expected for-loop body");
2872 if (!parse_statement_or_block(parser, &ontrue))
2876 cond = process_condition(parser, cond, &ifnot);
2880 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2881 *out = (ast_expression*)aloop;
2883 if (!parser_leaveblock(parser)) {
2889 if (initexpr) ast_unref(initexpr);
2890 if (cond) ast_unref(cond);
2891 if (increment) ast_unref(increment);
2892 (void)!parser_leaveblock(parser);
2896 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2898 ast_expression *exp = NULL;
2899 ast_expression *var = NULL;
2900 ast_return *ret = NULL;
2901 ast_value *retval = parser->function->return_value;
2902 ast_value *expected = parser->function->vtype;
2904 lex_ctx ctx = parser_ctx(parser);
2906 (void)block; /* not touching */
2908 if (!parser_next(parser)) {
2909 parseerror(parser, "expected return expression");
2913 /* return assignments */
2914 if (parser->tok == '=') {
2915 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
2916 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
2920 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
2922 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
2923 parseerror(parser, "invalid return type: `%s'", ty1);
2927 if (!parser_next(parser)) {
2928 parseerror(parser, "expected return assignment expression");
2932 if (!(exp = parse_expression_leave(parser, false, false, false)))
2935 /* prepare the return value */
2937 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
2938 ast_type_adopt(retval, expected->expression.next);
2939 parser->function->return_value = retval;
2942 if (!ast_compare_type(exp, (ast_expression*)retval)) {
2943 char ty1[1024], ty2[1024];
2944 ast_type_to_string(exp, ty1, sizeof(ty1));
2945 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
2946 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
2949 /* store to 'return' local variable */
2950 var = (ast_expression*)ast_store_new(
2952 type_store_instr[expected->expression.next->vtype],
2953 (ast_expression*)retval, exp);
2960 if (parser->tok != ';')
2961 parseerror(parser, "missing semicolon after return assignment");
2962 else if (!parser_next(parser))
2963 parseerror(parser, "parse error after return assignment");
2969 if (parser->tok != ';') {
2970 exp = parse_expression(parser, false, false);
2974 if (exp->vtype != TYPE_NIL &&
2975 exp->vtype != ((ast_expression*)expected)->next->vtype)
2977 parseerror(parser, "return with invalid expression");
2980 ret = ast_return_new(ctx, exp);
2986 if (!parser_next(parser))
2987 parseerror(parser, "parse error");
2989 if (!retval && expected->expression.next->vtype != TYPE_VOID)
2991 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2993 ret = ast_return_new(ctx, (ast_expression*)retval);
2995 *out = (ast_expression*)ret;
2999 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
3002 unsigned int levels = 0;
3003 lex_ctx ctx = parser_ctx(parser);
3004 const char **loops = (is_continue ? parser->continues : parser->breaks);
3006 (void)block; /* not touching */
3007 if (!parser_next(parser)) {
3008 parseerror(parser, "expected semicolon or loop label");
3012 if (!vec_size(loops)) {
3014 parseerror(parser, "`continue` can only be used inside loops");
3016 parseerror(parser, "`break` can only be used inside loops or switches");
3019 if (parser->tok == TOKEN_IDENT) {
3020 if (!OPTS_FLAG(LOOP_LABELS))
3021 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3022 i = vec_size(loops);
3024 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
3027 parseerror(parser, "no such loop to %s: `%s`",
3028 (is_continue ? "continue" : "break out of"),
3029 parser_tokval(parser));
3034 if (!parser_next(parser)) {
3035 parseerror(parser, "expected semicolon");
3040 if (parser->tok != ';') {
3041 parseerror(parser, "expected semicolon");
3045 if (!parser_next(parser))
3046 parseerror(parser, "parse error");
3048 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
3052 /* returns true when it was a variable qualifier, false otherwise!
3053 * on error, cvq is set to CV_WRONG
3055 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
3057 bool had_const = false;
3058 bool had_var = false;
3059 bool had_noref = false;
3060 bool had_attrib = false;
3061 bool had_static = false;
3066 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
3068 /* parse an attribute */
3069 if (!parser_next(parser)) {
3070 parseerror(parser, "expected attribute after `[[`");
3074 if (!strcmp(parser_tokval(parser), "noreturn")) {
3075 flags |= AST_FLAG_NORETURN;
3076 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3077 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
3082 else if (!strcmp(parser_tokval(parser), "noref")) {
3084 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3085 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
3090 else if (!strcmp(parser_tokval(parser), "inline")) {
3091 flags |= AST_FLAG_INLINE;
3092 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3093 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
3098 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
3099 flags |= AST_FLAG_ALIAS;
3102 if (!parser_next(parser)) {
3103 parseerror(parser, "parse error in attribute");
3107 if (parser->tok == '(') {
3108 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
3109 parseerror(parser, "`alias` attribute missing parameter");
3113 *message = util_strdup(parser_tokval(parser));
3115 if (!parser_next(parser)) {
3116 parseerror(parser, "parse error in attribute");
3120 if (parser->tok != ')') {
3121 parseerror(parser, "`alias` attribute expected `)` after parameter");
3125 if (!parser_next(parser)) {
3126 parseerror(parser, "parse error in attribute");
3131 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3132 parseerror(parser, "`alias` attribute expected `]]`");
3136 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
3137 flags |= AST_FLAG_DEPRECATED;
3140 if (!parser_next(parser)) {
3141 parseerror(parser, "parse error in attribute");
3145 if (parser->tok == '(') {
3146 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
3147 parseerror(parser, "`deprecated` attribute missing parameter");
3151 *message = util_strdup(parser_tokval(parser));
3153 if (!parser_next(parser)) {
3154 parseerror(parser, "parse error in attribute");
3158 if(parser->tok != ')') {
3159 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
3163 if (!parser_next(parser)) {
3164 parseerror(parser, "parse error in attribute");
3169 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3170 parseerror(parser, "`deprecated` attribute expected `]]`");
3173 if (*message) mem_d(*message);
3181 /* Skip tokens until we hit a ]] */
3182 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
3183 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3184 if (!parser_next(parser)) {
3185 parseerror(parser, "error inside attribute");
3192 else if (with_local && !strcmp(parser_tokval(parser), "static"))
3194 else if (!strcmp(parser_tokval(parser), "const"))
3196 else if (!strcmp(parser_tokval(parser), "var"))
3198 else if (with_local && !strcmp(parser_tokval(parser), "local"))
3200 else if (!strcmp(parser_tokval(parser), "noref"))
3202 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
3207 if (!parser_next(parser))
3217 *is_static = had_static;
3221 parseerror(parser, "parse error after variable qualifier");
3226 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
3227 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
3232 /* skip the 'while' and get the body */
3233 if (!parser_next(parser)) {
3234 if (OPTS_FLAG(LOOP_LABELS))
3235 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
3237 parseerror(parser, "expected 'switch' operand in parenthesis");
3241 if (parser->tok == ':') {
3242 if (!OPTS_FLAG(LOOP_LABELS))
3243 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3244 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3245 parseerror(parser, "expected loop label");
3248 label = util_strdup(parser_tokval(parser));
3249 if (!parser_next(parser)) {
3251 parseerror(parser, "expected 'switch' operand in parenthesis");
3256 if (parser->tok != '(') {
3257 parseerror(parser, "expected 'switch' operand in parenthesis");
3261 vec_push(parser->breaks, label);
3263 rv = parse_switch_go(parser, block, out);
3266 if (vec_last(parser->breaks) != label) {
3267 parseerror(parser, "internal error: label stack corrupted");
3273 vec_pop(parser->breaks);
3278 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3280 ast_expression *operand;
3283 ast_switch *switchnode;
3284 ast_switch_case swcase;
3287 bool noref, is_static;
3288 uint32_t qflags = 0;
3290 lex_ctx ctx = parser_ctx(parser);
3292 (void)block; /* not touching */
3295 /* parse into the expression */
3296 if (!parser_next(parser)) {
3297 parseerror(parser, "expected switch operand");
3300 /* parse the operand */
3301 operand = parse_expression_leave(parser, false, false, false);
3305 switchnode = ast_switch_new(ctx, operand);
3308 if (parser->tok != ')') {
3309 ast_delete(switchnode);
3310 parseerror(parser, "expected closing paren after 'switch' operand");
3314 /* parse over the opening paren */
3315 if (!parser_next(parser) || parser->tok != '{') {
3316 ast_delete(switchnode);
3317 parseerror(parser, "expected list of cases");
3321 if (!parser_next(parser)) {
3322 ast_delete(switchnode);
3323 parseerror(parser, "expected 'case' or 'default'");
3327 /* new block; allow some variables to be declared here */
3328 parser_enterblock(parser);
3331 if (parser->tok == TOKEN_IDENT)
3332 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3333 if (typevar || parser->tok == TOKEN_TYPENAME) {
3334 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3335 ast_delete(switchnode);
3340 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3342 if (cvq == CV_WRONG) {
3343 ast_delete(switchnode);
3346 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3347 ast_delete(switchnode);
3356 while (parser->tok != '}') {
3357 ast_block *caseblock;
3359 if (!strcmp(parser_tokval(parser), "case")) {
3360 if (!parser_next(parser)) {
3361 ast_delete(switchnode);
3362 parseerror(parser, "expected expression for case");
3365 swcase.value = parse_expression_leave(parser, false, false, false);
3366 if (!swcase.value) {
3367 ast_delete(switchnode);
3368 parseerror(parser, "expected expression for case");
3371 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3372 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3373 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3379 else if (!strcmp(parser_tokval(parser), "default")) {
3380 swcase.value = NULL;
3381 if (!parser_next(parser)) {
3382 ast_delete(switchnode);
3383 parseerror(parser, "expected colon");
3388 ast_delete(switchnode);
3389 parseerror(parser, "expected 'case' or 'default'");
3393 /* Now the colon and body */
3394 if (parser->tok != ':') {
3395 if (swcase.value) ast_unref(swcase.value);
3396 ast_delete(switchnode);
3397 parseerror(parser, "expected colon");
3401 if (!parser_next(parser)) {
3402 if (swcase.value) ast_unref(swcase.value);
3403 ast_delete(switchnode);
3404 parseerror(parser, "expected statements or case");
3407 caseblock = ast_block_new(parser_ctx(parser));
3409 if (swcase.value) ast_unref(swcase.value);
3410 ast_delete(switchnode);
3413 swcase.code = (ast_expression*)caseblock;
3414 vec_push(switchnode->cases, swcase);
3416 ast_expression *expr;
3417 if (parser->tok == '}')
3419 if (parser->tok == TOKEN_KEYWORD) {
3420 if (!strcmp(parser_tokval(parser), "case") ||
3421 !strcmp(parser_tokval(parser), "default"))
3426 if (!parse_statement(parser, caseblock, &expr, true)) {
3427 ast_delete(switchnode);
3432 if (!ast_block_add_expr(caseblock, expr)) {
3433 ast_delete(switchnode);
3439 parser_leaveblock(parser);
3442 if (parser->tok != '}') {
3443 ast_delete(switchnode);
3444 parseerror(parser, "expected closing paren of case list");
3447 if (!parser_next(parser)) {
3448 ast_delete(switchnode);
3449 parseerror(parser, "parse error after switch");
3452 *out = (ast_expression*)switchnode;
3456 /* parse computed goto sides */
3457 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3458 ast_expression *on_true;
3459 ast_expression *on_false;
3460 ast_expression *cond;
3465 if (ast_istype(*side, ast_ternary)) {
3466 ast_ternary *tern = (ast_ternary*)*side;
3467 on_true = parse_goto_computed(parser, &tern->on_true);
3468 on_false = parse_goto_computed(parser, &tern->on_false);
3470 if (!on_true || !on_false) {
3471 parseerror(parser, "expected label or expression in ternary");
3472 if (on_true) ast_unref(on_true);
3473 if (on_false) ast_unref(on_false);
3481 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3482 } else if (ast_istype(*side, ast_label)) {
3483 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3484 ast_goto_set_label(gt, ((ast_label*)*side));
3486 return (ast_expression*)gt;
3491 static bool parse_goto(parser_t *parser, ast_expression **out)
3493 ast_goto *gt = NULL;
3494 ast_expression *lbl;
3496 if (!parser_next(parser))
3499 if (parser->tok != TOKEN_IDENT) {
3500 ast_expression *expression;
3502 /* could be an expression i.e computed goto :-) */
3503 if (parser->tok != '(') {
3504 parseerror(parser, "expected label name after `goto`");
3508 /* failed to parse expression for goto */
3509 if (!(expression = parse_expression(parser, false, true)) ||
3510 !(*out = parse_goto_computed(parser, &expression))) {
3511 parseerror(parser, "invalid goto expression");
3512 ast_unref(expression);
3519 /* not computed goto */
3520 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3521 lbl = parser_find_label(parser, gt->name);
3523 if (!ast_istype(lbl, ast_label)) {
3524 parseerror(parser, "internal error: label is not an ast_label");
3528 ast_goto_set_label(gt, (ast_label*)lbl);
3531 vec_push(parser->gotos, gt);
3533 if (!parser_next(parser) || parser->tok != ';') {
3534 parseerror(parser, "semicolon expected after goto label");
3537 if (!parser_next(parser)) {
3538 parseerror(parser, "parse error after goto");
3542 *out = (ast_expression*)gt;
3546 static bool parse_skipwhite(parser_t *parser)
3549 if (!parser_next(parser))
3551 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3552 return parser->tok < TOKEN_ERROR;
3555 static bool parse_eol(parser_t *parser)
3557 if (!parse_skipwhite(parser))
3559 return parser->tok == TOKEN_EOL;
3562 static bool parse_pragma_do(parser_t *parser)
3564 if (!parser_next(parser) ||
3565 parser->tok != TOKEN_IDENT ||
3566 strcmp(parser_tokval(parser), "pragma"))
3568 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3571 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3572 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3576 if (!strcmp(parser_tokval(parser), "noref")) {
3577 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3578 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3581 parser->noref = !!parser_token(parser)->constval.i;
3582 if (!parse_eol(parser)) {
3583 parseerror(parser, "parse error after `noref` pragma");
3589 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3596 static bool parse_pragma(parser_t *parser)
3599 parser->lex->flags.preprocessing = true;
3600 parser->lex->flags.mergelines = true;
3601 rv = parse_pragma_do(parser);
3602 if (parser->tok != TOKEN_EOL) {
3603 parseerror(parser, "junk after pragma");
3606 parser->lex->flags.preprocessing = false;
3607 parser->lex->flags.mergelines = false;
3608 if (!parser_next(parser)) {
3609 parseerror(parser, "parse error after pragma");
3615 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3617 bool noref, is_static;
3619 uint32_t qflags = 0;
3620 ast_value *typevar = NULL;
3621 char *vstring = NULL;
3625 if (parser->tok == TOKEN_IDENT)
3626 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3628 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3630 /* local variable */
3632 parseerror(parser, "cannot declare a variable from here");
3635 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3636 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3639 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3643 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3645 if (cvq == CV_WRONG)
3647 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3649 else if (parser->tok == TOKEN_KEYWORD)
3651 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3656 if (!parser_next(parser)) {
3657 parseerror(parser, "parse error after __builtin_debug_printtype");
3661 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3663 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3664 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3665 if (!parser_next(parser)) {
3666 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3672 if (!parse_statement(parser, block, out, allow_cases))
3675 con_out("__builtin_debug_printtype: got no output node\n");
3678 ast_type_to_string(*out, ty, sizeof(ty));
3679 con_out("__builtin_debug_printtype: `%s`\n", ty);
3684 else if (!strcmp(parser_tokval(parser), "return"))
3686 return parse_return(parser, block, out);
3688 else if (!strcmp(parser_tokval(parser), "if"))
3690 return parse_if(parser, block, out);
3692 else if (!strcmp(parser_tokval(parser), "while"))
3694 return parse_while(parser, block, out);
3696 else if (!strcmp(parser_tokval(parser), "do"))
3698 return parse_dowhile(parser, block, out);
3700 else if (!strcmp(parser_tokval(parser), "for"))
3702 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3703 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3706 return parse_for(parser, block, out);
3708 else if (!strcmp(parser_tokval(parser), "break"))
3710 return parse_break_continue(parser, block, out, false);
3712 else if (!strcmp(parser_tokval(parser), "continue"))
3714 return parse_break_continue(parser, block, out, true);
3716 else if (!strcmp(parser_tokval(parser), "switch"))
3718 return parse_switch(parser, block, out);
3720 else if (!strcmp(parser_tokval(parser), "case") ||
3721 !strcmp(parser_tokval(parser), "default"))
3724 parseerror(parser, "unexpected 'case' label");
3729 else if (!strcmp(parser_tokval(parser), "goto"))
3731 return parse_goto(parser, out);
3733 else if (!strcmp(parser_tokval(parser), "typedef"))
3735 if (!parser_next(parser)) {
3736 parseerror(parser, "expected type definition after 'typedef'");
3739 return parse_typedef(parser);
3741 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3744 else if (parser->tok == '{')
3747 inner = parse_block(parser);
3750 *out = (ast_expression*)inner;
3753 else if (parser->tok == ':')
3757 if (!parser_next(parser)) {
3758 parseerror(parser, "expected label name");
3761 if (parser->tok != TOKEN_IDENT) {
3762 parseerror(parser, "label must be an identifier");
3765 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3767 if (!label->undefined) {
3768 parseerror(parser, "label `%s` already defined", label->name);
3771 label->undefined = false;
3774 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3775 vec_push(parser->labels, label);
3777 *out = (ast_expression*)label;
3778 if (!parser_next(parser)) {
3779 parseerror(parser, "parse error after label");
3782 for (i = 0; i < vec_size(parser->gotos); ++i) {
3783 if (!strcmp(parser->gotos[i]->name, label->name)) {
3784 ast_goto_set_label(parser->gotos[i], label);
3785 vec_remove(parser->gotos, i, 1);
3791 else if (parser->tok == ';')
3793 if (!parser_next(parser)) {
3794 parseerror(parser, "parse error after empty statement");
3801 lex_ctx ctx = parser_ctx(parser);
3802 ast_expression *exp = parse_expression(parser, false, false);
3806 if (!ast_side_effects(exp)) {
3807 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3814 static bool parse_enum(parser_t *parser)
3817 bool reverse = false;
3819 ast_value **values = NULL;
3820 ast_value *var = NULL;
3823 ast_expression *old;
3825 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3826 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3830 /* enumeration attributes (can add more later) */
3831 if (parser->tok == ':') {
3832 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3833 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3838 if (!strcmp(parser_tokval(parser), "flag")) {
3842 else if (!strcmp(parser_tokval(parser), "reverse")) {
3846 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3850 if (!parser_next(parser) || parser->tok != '{') {
3851 parseerror(parser, "expected `{` after enum attribute ");
3857 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3858 if (parser->tok == '}') {
3859 /* allow an empty enum */
3862 parseerror(parser, "expected identifier or `}`");
3866 old = parser_find_field(parser, parser_tokval(parser));
3868 old = parser_find_global(parser, parser_tokval(parser));
3870 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3871 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3875 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3876 vec_push(values, var);
3877 var->cvq = CV_CONST;
3878 var->hasvalue = true;
3880 /* for flagged enumerations increment in POTs of TWO */
3881 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3882 parser_addglobal(parser, var->name, (ast_expression*)var);
3884 if (!parser_next(parser)) {
3885 parseerror(parser, "expected `=`, `}` or comma after identifier");
3889 if (parser->tok == ',')
3891 if (parser->tok == '}')
3893 if (parser->tok != '=') {
3894 parseerror(parser, "expected `=`, `}` or comma after identifier");
3898 if (!parser_next(parser)) {
3899 parseerror(parser, "expected expression after `=`");
3903 /* We got a value! */
3904 old = parse_expression_leave(parser, true, false, false);
3905 asvalue = (ast_value*)old;
3906 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3907 compile_error(ast_ctx(var), "constant value or expression expected");
3910 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3912 if (parser->tok == '}')
3914 if (parser->tok != ',') {
3915 parseerror(parser, "expected `}` or comma after expression");
3920 /* patch them all (for reversed attribute) */
3923 for (i = 0; i < vec_size(values); i++)
3924 values[i]->constval.vfloat = vec_size(values) - i - 1;
3927 if (parser->tok != '}') {
3928 parseerror(parser, "internal error: breaking without `}`");
3932 if (!parser_next(parser) || parser->tok != ';') {
3933 parseerror(parser, "expected semicolon after enumeration");
3937 if (!parser_next(parser)) {
3938 parseerror(parser, "parse error after enumeration");
3950 static bool parse_block_into(parser_t *parser, ast_block *block)
3954 parser_enterblock(parser);
3956 if (!parser_next(parser)) { /* skip the '{' */
3957 parseerror(parser, "expected function body");
3961 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3963 ast_expression *expr = NULL;
3964 if (parser->tok == '}')
3967 if (!parse_statement(parser, block, &expr, false)) {
3968 /* parseerror(parser, "parse error"); */
3974 if (!ast_block_add_expr(block, expr)) {
3981 if (parser->tok != '}') {
3984 (void)parser_next(parser);
3988 if (!parser_leaveblock(parser))
3990 return retval && !!block;
3993 static ast_block* parse_block(parser_t *parser)
3996 block = ast_block_new(parser_ctx(parser));
3999 if (!parse_block_into(parser, block)) {
4000 ast_block_delete(block);
4006 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
4008 if (parser->tok == '{') {
4009 *out = (ast_expression*)parse_block(parser);
4012 return parse_statement(parser, NULL, out, false);
4015 static bool create_vector_members(ast_value *var, ast_member **me)
4018 size_t len = strlen(var->name);
4020 for (i = 0; i < 3; ++i) {
4021 char *name = (char*)mem_a(len+3);
4022 memcpy(name, var->name, len);
4024 name[len+1] = 'x'+i;
4026 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
4035 do { ast_member_delete(me[--i]); } while(i);
4039 static bool parse_function_body(parser_t *parser, ast_value *var)
4041 ast_block *block = NULL;
4046 ast_expression *framenum = NULL;
4047 ast_expression *nextthink = NULL;
4048 /* None of the following have to be deleted */
4049 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
4050 ast_expression *gbl_time = NULL, *gbl_self = NULL;
4051 bool has_frame_think;
4055 has_frame_think = false;
4056 old = parser->function;
4058 if (var->expression.flags & AST_FLAG_ALIAS) {
4059 parseerror(parser, "function aliases cannot have bodies");
4063 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
4064 parseerror(parser, "gotos/labels leaking");
4068 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4069 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
4070 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
4076 if (parser->tok == '[') {
4077 /* got a frame definition: [ framenum, nextthink ]
4078 * this translates to:
4079 * self.frame = framenum;
4080 * self.nextthink = time + 0.1;
4081 * self.think = nextthink;
4085 fld_think = parser_find_field(parser, "think");
4086 fld_nextthink = parser_find_field(parser, "nextthink");
4087 fld_frame = parser_find_field(parser, "frame");
4088 if (!fld_think || !fld_nextthink || !fld_frame) {
4089 parseerror(parser, "cannot use [frame,think] notation without the required fields");
4090 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
4093 gbl_time = parser_find_global(parser, "time");
4094 gbl_self = parser_find_global(parser, "self");
4095 if (!gbl_time || !gbl_self) {
4096 parseerror(parser, "cannot use [frame,think] notation without the required globals");
4097 parseerror(parser, "please declare the following globals: `time`, `self`");
4101 if (!parser_next(parser))
4104 framenum = parse_expression_leave(parser, true, false, false);
4106 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
4109 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
4110 ast_unref(framenum);
4111 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
4115 if (parser->tok != ',') {
4116 ast_unref(framenum);
4117 parseerror(parser, "expected comma after frame number in [frame,think] notation");
4118 parseerror(parser, "Got a %i\n", parser->tok);
4122 if (!parser_next(parser)) {
4123 ast_unref(framenum);
4127 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
4129 /* qc allows the use of not-yet-declared functions here
4130 * - this automatically creates a prototype */
4131 ast_value *thinkfunc;
4132 ast_expression *functype = fld_think->next;
4134 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
4135 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
4136 ast_unref(framenum);
4137 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
4140 ast_type_adopt(thinkfunc, functype);
4142 if (!parser_next(parser)) {
4143 ast_unref(framenum);
4144 ast_delete(thinkfunc);
4148 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
4150 nextthink = (ast_expression*)thinkfunc;
4153 nextthink = parse_expression_leave(parser, true, false, false);
4155 ast_unref(framenum);
4156 parseerror(parser, "expected a think-function in [frame,think] notation");
4161 if (!ast_istype(nextthink, ast_value)) {
4162 parseerror(parser, "think-function in [frame,think] notation must be a constant");
4166 if (retval && parser->tok != ']') {
4167 parseerror(parser, "expected closing `]` for [frame,think] notation");
4171 if (retval && !parser_next(parser)) {
4175 if (retval && parser->tok != '{') {
4176 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
4181 ast_unref(nextthink);
4182 ast_unref(framenum);
4186 has_frame_think = true;
4189 block = ast_block_new(parser_ctx(parser));
4191 parseerror(parser, "failed to allocate block");
4192 if (has_frame_think) {
4193 ast_unref(nextthink);
4194 ast_unref(framenum);
4199 if (has_frame_think) {
4201 ast_expression *self_frame;
4202 ast_expression *self_nextthink;
4203 ast_expression *self_think;
4204 ast_expression *time_plus_1;
4205 ast_store *store_frame;
4206 ast_store *store_nextthink;
4207 ast_store *store_think;
4209 ctx = parser_ctx(parser);
4210 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
4211 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
4212 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
4214 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
4215 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
4217 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
4218 if (self_frame) ast_delete(self_frame);
4219 if (self_nextthink) ast_delete(self_nextthink);
4220 if (self_think) ast_delete(self_think);
4221 if (time_plus_1) ast_delete(time_plus_1);
4227 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
4228 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
4229 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
4232 ast_delete(self_frame);
4235 if (!store_nextthink) {
4236 ast_delete(self_nextthink);
4240 ast_delete(self_think);
4244 if (store_frame) ast_delete(store_frame);
4245 if (store_nextthink) ast_delete(store_nextthink);
4246 if (store_think) ast_delete(store_think);
4249 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
4250 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
4251 !ast_block_add_expr(block, (ast_expression*)store_think))
4258 parseerror(parser, "failed to generate code for [frame,think]");
4259 ast_unref(nextthink);
4260 ast_unref(framenum);
4266 if (var->hasvalue) {
4267 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
4268 ast_block_delete(block);
4272 func = ast_function_new(ast_ctx(var), var->name, var);
4274 parseerror(parser, "failed to allocate function for `%s`", var->name);
4275 ast_block_delete(block);
4278 vec_push(parser->functions, func);
4280 parser_enterblock(parser);
4282 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
4284 ast_value *param = var->expression.params[parami];
4287 if (param->expression.vtype != TYPE_VECTOR &&
4288 (param->expression.vtype != TYPE_FIELD ||
4289 param->expression.next->vtype != TYPE_VECTOR))
4294 if (!create_vector_members(param, me)) {
4295 ast_block_delete(block);
4299 for (e = 0; e < 3; ++e) {
4300 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4301 ast_block_collect(block, (ast_expression*)me[e]);
4305 if (var->argcounter) {
4306 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4307 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4311 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4313 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4314 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4315 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4316 varargs->expression.count = 0;
4317 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4318 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4319 ast_delete(varargs);
4320 ast_block_delete(block);
4323 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4324 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4325 ast_delete(varargs);
4326 ast_block_delete(block);
4329 func->varargs = varargs;
4331 func->fixedparams = parser_const_float(parser, vec_size(var->expression.params));
4334 parser->function = func;
4335 if (!parse_block_into(parser, block)) {
4336 ast_block_delete(block);
4340 vec_push(func->blocks, block);
4343 parser->function = old;
4344 if (!parser_leaveblock(parser))
4346 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4347 parseerror(parser, "internal error: local scopes left");
4351 if (parser->tok == ';')
4352 return parser_next(parser);
4353 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4354 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4358 (void)!parser_leaveblock(parser);
4359 vec_pop(parser->functions);
4360 ast_function_delete(func);
4361 var->constval.vfunc = NULL;
4364 parser->function = old;
4368 static ast_expression *array_accessor_split(
4373 ast_expression *left,
4374 ast_expression *right
4380 lex_ctx ctx = ast_ctx(array);
4382 if (!left || !right) {
4383 if (left) ast_delete(left);
4384 if (right) ast_delete(right);
4388 cmp = ast_binary_new(ctx, INSTR_LT,
4389 (ast_expression*)index,
4390 (ast_expression*)parser_const_float(parser, middle));
4394 parseerror(parser, "internal error: failed to create comparison for array setter");
4398 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4400 ast_delete(cmp); /* will delete left and right */
4401 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4405 return (ast_expression*)ifthen;
4408 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4410 lex_ctx ctx = ast_ctx(array);
4412 if (from+1 == afterend) {
4413 /* set this value */
4416 ast_array_index *subscript;
4418 int assignop = type_store_instr[value->expression.vtype];
4420 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4421 assignop = INSTR_STORE_V;
4423 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4427 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4429 ast_delete(subscript);
4433 block = ast_block_new(ctx);
4439 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4444 ret = ast_return_new(ctx, NULL);
4450 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4455 return (ast_expression*)block;
4457 ast_expression *left, *right;
4458 size_t diff = afterend - from;
4459 size_t middle = from + diff/2;
4460 left = array_setter_node(parser, array, index, value, from, middle);
4461 right = array_setter_node(parser, array, index, value, middle, afterend);
4462 return array_accessor_split(parser, array, index, middle, left, right);
4466 static ast_expression *array_field_setter_node(
4475 lex_ctx ctx = ast_ctx(array);
4477 if (from+1 == afterend) {
4478 /* set this value */
4481 ast_entfield *entfield;
4482 ast_array_index *subscript;
4484 int assignop = type_storep_instr[value->expression.vtype];
4486 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4487 assignop = INSTR_STOREP_V;
4489 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4493 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4494 subscript->expression.vtype = TYPE_FIELD;
4496 entfield = ast_entfield_new_force(ctx,
4497 (ast_expression*)entity,
4498 (ast_expression*)subscript,
4499 (ast_expression*)subscript);
4501 ast_delete(subscript);
4505 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4507 ast_delete(entfield);
4511 block = ast_block_new(ctx);
4517 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4522 ret = ast_return_new(ctx, NULL);
4528 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4533 return (ast_expression*)block;
4535 ast_expression *left, *right;
4536 size_t diff = afterend - from;
4537 size_t middle = from + diff/2;
4538 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4539 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4540 return array_accessor_split(parser, array, index, middle, left, right);
4544 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4546 lex_ctx ctx = ast_ctx(array);
4548 if (from+1 == afterend) {
4550 ast_array_index *subscript;
4552 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4556 ret = ast_return_new(ctx, (ast_expression*)subscript);
4558 ast_delete(subscript);
4562 return (ast_expression*)ret;
4564 ast_expression *left, *right;
4565 size_t diff = afterend - from;
4566 size_t middle = from + diff/2;
4567 left = array_getter_node(parser, array, index, from, middle);
4568 right = array_getter_node(parser, array, index, middle, afterend);
4569 return array_accessor_split(parser, array, index, middle, left, right);
4573 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4575 ast_function *func = NULL;
4576 ast_value *fval = NULL;
4577 ast_block *body = NULL;
4579 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4581 parseerror(parser, "failed to create accessor function value");
4585 func = ast_function_new(ast_ctx(array), funcname, fval);
4588 parseerror(parser, "failed to create accessor function node");
4592 body = ast_block_new(ast_ctx(array));
4594 parseerror(parser, "failed to create block for array accessor");
4600 vec_push(func->blocks, body);
4603 vec_push(parser->accessors, fval);
4608 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4610 ast_value *index = NULL;
4611 ast_value *value = NULL;
4615 if (!ast_istype(array->expression.next, ast_value)) {
4616 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4620 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4622 func = fval->constval.vfunc;
4623 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4625 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4626 value = ast_value_copy((ast_value*)array->expression.next);
4628 if (!index || !value) {
4629 parseerror(parser, "failed to create locals for array accessor");
4632 (void)!ast_value_set_name(value, "value"); /* not important */
4633 vec_push(fval->expression.params, index);
4634 vec_push(fval->expression.params, value);
4636 array->setter = fval;
4639 if (index) ast_delete(index);
4640 if (value) ast_delete(value);
4646 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4648 ast_expression *root = NULL;
4649 root = array_setter_node(parser, array,
4650 array->setter->expression.params[0],
4651 array->setter->expression.params[1],
4652 0, array->expression.count);
4654 parseerror(parser, "failed to build accessor search tree");
4657 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4664 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4666 if (!parser_create_array_setter_proto(parser, array, funcname))
4668 return parser_create_array_setter_impl(parser, array);
4671 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4673 ast_expression *root = NULL;
4674 ast_value *entity = NULL;
4675 ast_value *index = NULL;
4676 ast_value *value = NULL;
4680 if (!ast_istype(array->expression.next, ast_value)) {
4681 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4685 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4687 func = fval->constval.vfunc;
4688 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4690 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4691 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4692 value = ast_value_copy((ast_value*)array->expression.next);
4693 if (!entity || !index || !value) {
4694 parseerror(parser, "failed to create locals for array accessor");
4697 (void)!ast_value_set_name(value, "value"); /* not important */
4698 vec_push(fval->expression.params, entity);
4699 vec_push(fval->expression.params, index);
4700 vec_push(fval->expression.params, value);
4702 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4704 parseerror(parser, "failed to build accessor search tree");
4708 array->setter = fval;
4709 return ast_block_add_expr(func->blocks[0], root);
4711 if (entity) ast_delete(entity);
4712 if (index) ast_delete(index);
4713 if (value) ast_delete(value);
4714 if (root) ast_delete(root);
4720 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4722 ast_value *index = NULL;
4726 /* NOTE: checking array->expression.next rather than elemtype since
4727 * for fields elemtype is a temporary fieldtype.
4729 if (!ast_istype(array->expression.next, ast_value)) {
4730 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4734 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4736 func = fval->constval.vfunc;
4737 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4739 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4742 parseerror(parser, "failed to create locals for array accessor");
4745 vec_push(fval->expression.params, index);
4747 array->getter = fval;
4750 if (index) ast_delete(index);
4756 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4758 ast_expression *root = NULL;
4760 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4762 parseerror(parser, "failed to build accessor search tree");
4765 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4772 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4774 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4776 return parser_create_array_getter_impl(parser, array);
4779 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4780 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4788 bool variadic = false;
4789 ast_value *varparam = NULL;
4790 char *argcounter = NULL;
4792 ctx = parser_ctx(parser);
4794 /* for the sake of less code we parse-in in this function */
4795 if (!parser_next(parser)) {
4797 parseerror(parser, "expected parameter list");
4803 /* parse variables until we hit a closing paren */
4804 while (parser->tok != ')') {
4806 /* there must be commas between them */
4807 if (parser->tok != ',') {
4808 parseerror(parser, "expected comma or end of parameter list");
4811 if (!parser_next(parser)) {
4812 parseerror(parser, "expected parameter");
4818 if (parser->tok == TOKEN_DOTS) {
4819 /* '...' indicates a varargs function */
4821 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4822 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4825 if (parser->tok == TOKEN_IDENT) {
4826 argcounter = util_strdup(parser_tokval(parser));
4827 if (!parser_next(parser) || parser->tok != ')') {
4828 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4835 /* for anything else just parse a typename */
4836 param = parse_typename(parser, NULL, NULL);
4839 vec_push(params, param);
4840 if (param->expression.vtype >= TYPE_VARIANT) {
4841 char tname[1024]; /* typename is reserved in C++ */
4842 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4843 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4846 /* type-restricted varargs */
4847 if (parser->tok == TOKEN_DOTS) {
4849 varparam = vec_last(params);
4851 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4852 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4855 if (parser->tok == TOKEN_IDENT) {
4856 argcounter = util_strdup(parser_tokval(parser));
4857 if (!parser_next(parser) || parser->tok != ')') {
4858 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4866 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4870 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4871 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4874 if (!parser_next(parser)) {
4875 parseerror(parser, "parse error after typename");
4879 /* now turn 'var' into a function type */
4880 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4881 fval->expression.next = (ast_expression*)var;
4883 fval->expression.flags |= AST_FLAG_VARIADIC;
4886 var->expression.params = params;
4887 var->expression.varparam = (ast_expression*)varparam;
4888 var->argcounter = argcounter;
4897 ast_delete(varparam);
4899 for (i = 0; i < vec_size(params); ++i)
4900 ast_delete(params[i]);
4905 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4907 ast_expression *cexp;
4908 ast_value *cval, *tmp;
4911 ctx = parser_ctx(parser);
4913 if (!parser_next(parser)) {
4915 parseerror(parser, "expected array-size");
4919 cexp = parse_expression_leave(parser, true, false, false);
4921 if (!cexp || !ast_istype(cexp, ast_value)) {
4925 parseerror(parser, "expected array-size as constant positive integer");
4928 cval = (ast_value*)cexp;
4930 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4931 tmp->expression.next = (ast_expression*)var;
4934 if (cval->expression.vtype == TYPE_INTEGER)
4935 tmp->expression.count = cval->constval.vint;
4936 else if (cval->expression.vtype == TYPE_FLOAT)
4937 tmp->expression.count = cval->constval.vfloat;
4941 parseerror(parser, "array-size must be a positive integer constant");
4946 if (parser->tok != ']') {
4948 parseerror(parser, "expected ']' after array-size");
4951 if (!parser_next(parser)) {
4953 parseerror(parser, "error after parsing array size");
4959 /* Parse a complete typename.
4960 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4961 * but when parsing variables separated by comma
4962 * 'storebase' should point to where the base-type should be kept.
4963 * The base type makes up every bit of type information which comes *before* the
4966 * The following will be parsed in its entirety:
4968 * The 'basetype' in this case is 'void()'
4969 * and if there's a comma after it, say:
4971 * then the type-information 'void()' can be stored in 'storebase'
4973 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4975 ast_value *var, *tmp;
4978 const char *name = NULL;
4979 bool isfield = false;
4980 bool wasarray = false;
4981 size_t morefields = 0;
4983 ctx = parser_ctx(parser);
4985 /* types may start with a dot */
4986 if (parser->tok == '.') {
4988 /* if we parsed a dot we need a typename now */
4989 if (!parser_next(parser)) {
4990 parseerror(parser, "expected typename for field definition");
4994 /* Further dots are handled seperately because they won't be part of the
4997 while (parser->tok == '.') {
4999 if (!parser_next(parser)) {
5000 parseerror(parser, "expected typename for field definition");
5005 if (parser->tok == TOKEN_IDENT)
5006 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
5007 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
5008 parseerror(parser, "expected typename");
5012 /* generate the basic type value */
5013 if (cached_typedef) {
5014 var = ast_value_copy(cached_typedef);
5015 ast_value_set_name(var, "<type(from_def)>");
5017 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
5019 for (; morefields; --morefields) {
5020 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
5021 tmp->expression.next = (ast_expression*)var;
5025 /* do not yet turn into a field - remember:
5026 * .void() foo; is a field too
5027 * .void()() foo; is a function
5031 if (!parser_next(parser)) {
5033 parseerror(parser, "parse error after typename");
5037 /* an opening paren now starts the parameter-list of a function
5038 * this is where original-QC has parameter lists.
5039 * We allow a single parameter list here.
5040 * Much like fteqcc we don't allow `float()() x`
5042 if (parser->tok == '(') {
5043 var = parse_parameter_list(parser, var);
5048 /* store the base if requested */
5050 *storebase = ast_value_copy(var);
5052 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5053 tmp->expression.next = (ast_expression*)*storebase;
5058 /* there may be a name now */
5059 if (parser->tok == TOKEN_IDENT) {
5060 name = util_strdup(parser_tokval(parser));
5062 if (!parser_next(parser)) {
5065 parseerror(parser, "error after variable or field declaration");
5070 /* now this may be an array */
5071 if (parser->tok == '[') {
5073 var = parse_arraysize(parser, var);
5075 if (name) mem_d(name);
5080 /* This is the point where we can turn it into a field */
5082 /* turn it into a field if desired */
5083 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5084 tmp->expression.next = (ast_expression*)var;
5088 /* now there may be function parens again */
5089 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5090 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5091 if (parser->tok == '(' && wasarray)
5092 parseerror(parser, "arrays as part of a return type is not supported");
5093 while (parser->tok == '(') {
5094 var = parse_parameter_list(parser, var);
5096 if (name) mem_d(name);
5101 /* finally name it */
5103 if (!ast_value_set_name(var, name)) {
5106 parseerror(parser, "internal error: failed to set name");
5109 /* free the name, ast_value_set_name duplicates */
5116 static bool parse_typedef(parser_t *parser)
5118 ast_value *typevar, *oldtype;
5119 ast_expression *old;
5121 typevar = parse_typename(parser, NULL, NULL);
5126 if ( (old = parser_find_var(parser, typevar->name)) ) {
5127 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
5128 " -> `%s` has been declared here: %s:%i",
5129 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
5130 ast_delete(typevar);
5134 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
5135 parseerror(parser, "type `%s` has already been declared here: %s:%i",
5136 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
5137 ast_delete(typevar);
5141 vec_push(parser->_typedefs, typevar);
5142 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
5144 if (parser->tok != ';') {
5145 parseerror(parser, "expected semicolon after typedef");
5148 if (!parser_next(parser)) {
5149 parseerror(parser, "parse error after typedef");
5156 static const char *cvq_to_str(int cvq) {
5158 case CV_NONE: return "none";
5159 case CV_VAR: return "`var`";
5160 case CV_CONST: return "`const`";
5161 default: return "<INVALID>";
5165 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
5168 if (proto->cvq != var->cvq) {
5169 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
5170 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5171 parser->tok == '='))
5173 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
5174 "`%s` declared with different qualifiers: %s\n"
5175 " -> previous declaration here: %s:%i uses %s",
5176 var->name, cvq_to_str(var->cvq),
5177 ast_ctx(proto).file, ast_ctx(proto).line,
5178 cvq_to_str(proto->cvq));
5181 av = (var ->expression.flags & AST_FLAG_NORETURN);
5182 ao = (proto->expression.flags & AST_FLAG_NORETURN);
5184 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
5185 "`%s` declared with different attributes%s\n"
5186 " -> previous declaration here: %s:%i",
5187 var->name, (av ? ": noreturn" : ""),
5188 ast_ctx(proto).file, ast_ctx(proto).line,
5189 (ao ? ": noreturn" : ""));
5194 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)
5198 ast_expression *old;
5202 ast_value *basetype = NULL;
5204 bool isparam = false;
5205 bool isvector = false;
5206 bool cleanvar = true;
5207 bool wasarray = false;
5209 ast_member *me[3] = { NULL, NULL, NULL };
5211 if (!localblock && is_static)
5212 parseerror(parser, "`static` qualifier is not supported in global scope");
5214 /* get the first complete variable */
5215 var = parse_typename(parser, &basetype, cached_typedef);
5218 ast_delete(basetype);
5226 /* Part 0: finish the type */
5227 if (parser->tok == '(') {
5228 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5229 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5230 var = parse_parameter_list(parser, var);
5236 /* we only allow 1-dimensional arrays */
5237 if (parser->tok == '[') {
5239 var = parse_arraysize(parser, var);
5245 if (parser->tok == '(' && wasarray) {
5246 parseerror(parser, "arrays as part of a return type is not supported");
5247 /* we'll still parse the type completely for now */
5249 /* for functions returning functions */
5250 while (parser->tok == '(') {
5251 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5252 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5253 var = parse_parameter_list(parser, var);
5260 var->cvq = qualifier;
5261 var->expression.flags |= qflags;
5264 * store the vstring back to var for alias and
5265 * deprecation messages.
5267 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5268 var->expression.flags & AST_FLAG_ALIAS)
5269 var->desc = vstring;
5272 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5273 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5274 * is then filled with the previous definition and the parameter-names replaced.
5276 if (!strcmp(var->name, "nil")) {
5277 if (OPTS_FLAG(UNTYPED_NIL)) {
5278 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5279 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5281 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5284 /* Deal with end_sys_ vars */
5286 if (!strcmp(var->name, "end_sys_globals")) {
5288 parser->crc_globals = vec_size(parser->globals);
5291 else if (!strcmp(var->name, "end_sys_fields")) {
5293 parser->crc_fields = vec_size(parser->fields);
5296 if (was_end && var->expression.vtype == TYPE_FIELD) {
5297 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5298 "global '%s' hint should not be a field",
5299 parser_tokval(parser)))
5306 if (!nofields && var->expression.vtype == TYPE_FIELD)
5308 /* deal with field declarations */
5309 old = parser_find_field(parser, var->name);
5311 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5312 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5321 parseerror(parser, "field `%s` already declared here: %s:%i",
5322 var->name, ast_ctx(old).file, ast_ctx(old).line);
5327 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5328 (old = parser_find_global(parser, var->name)))
5330 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5331 parseerror(parser, "field `%s` already declared here: %s:%i",
5332 var->name, ast_ctx(old).file, ast_ctx(old).line);
5339 /* deal with other globals */
5340 old = parser_find_global(parser, var->name);
5341 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5343 /* This is a function which had a prototype */
5344 if (!ast_istype(old, ast_value)) {
5345 parseerror(parser, "internal error: prototype is not an ast_value");
5349 proto = (ast_value*)old;
5350 proto->desc = var->desc;
5351 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5352 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5354 ast_ctx(proto).file, ast_ctx(proto).line);
5358 /* we need the new parameter-names */
5359 for (i = 0; i < vec_size(proto->expression.params); ++i)
5360 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5361 if (!parser_check_qualifiers(parser, var, proto)) {
5368 proto->expression.flags |= var->expression.flags;
5376 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5377 "global `%s` already declared here: %s:%i",
5378 var->name, ast_ctx(old).file, ast_ctx(old).line))
5383 proto = (ast_value*)old;
5384 if (!ast_istype(old, ast_value)) {
5385 parseerror(parser, "internal error: not an ast_value");
5390 if (!parser_check_qualifiers(parser, var, proto)) {
5395 proto->expression.flags |= var->expression.flags;
5399 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5400 (old = parser_find_field(parser, var->name)))
5402 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5403 parseerror(parser, "global `%s` already declared here: %s:%i",
5404 var->name, ast_ctx(old).file, ast_ctx(old).line);
5411 else /* it's not a global */
5413 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5414 if (old && !isparam) {
5415 parseerror(parser, "local `%s` already declared here: %s:%i",
5416 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5420 old = parser_find_local(parser, var->name, 0, &isparam);
5421 if (old && isparam) {
5422 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5423 "local `%s` is shadowing a parameter", var->name))
5425 parseerror(parser, "local `%s` already declared here: %s:%i",
5426 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5430 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5438 /* in a noref section we simply bump the usecount */
5439 if (noref || parser->noref)
5443 * Create the global/local, and deal with vector types.
5446 if (var->expression.vtype == TYPE_VECTOR)
5448 else if (var->expression.vtype == TYPE_FIELD &&
5449 var->expression.next->vtype == TYPE_VECTOR)
5453 if (!create_vector_members(var, me)) {
5460 /* deal with global variables, fields, functions */
5461 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5462 var->isfield = true;
5463 vec_push(parser->fields, (ast_expression*)var);
5464 util_htset(parser->htfields, var->name, var);
5466 for (i = 0; i < 3; ++i) {
5467 vec_push(parser->fields, (ast_expression*)me[i]);
5468 util_htset(parser->htfields, me[i]->name, me[i]);
5473 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5474 parser_addglobal(parser, var->name, (ast_expression*)var);
5476 for (i = 0; i < 3; ++i) {
5477 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5481 ast_expression *find = parser_find_global(parser, var->desc);
5484 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5488 if (var->expression.vtype != find->vtype) {
5492 ast_type_to_string(find, ty1, sizeof(ty1));
5493 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5495 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5502 * add alias to aliases table and to corrector
5503 * so corrections can apply for aliases as well.
5505 util_htset(parser->aliases, var->name, find);
5508 * add to corrector so corrections can work
5509 * even for aliases too.
5512 vec_last(parser->correct_variables),
5513 &vec_last(parser->correct_variables_score),
5517 /* generate aliases for vector components */
5521 util_asprintf(&buffer[0], "%s_x", var->desc);
5522 util_asprintf(&buffer[1], "%s_y", var->desc);
5523 util_asprintf(&buffer[2], "%s_z", var->desc);
5525 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5526 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5527 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5534 * add to corrector so corrections can work
5535 * even for aliases too.
5538 vec_last(parser->correct_variables),
5539 &vec_last(parser->correct_variables_score),
5543 vec_last(parser->correct_variables),
5544 &vec_last(parser->correct_variables_score),
5548 vec_last(parser->correct_variables),
5549 &vec_last(parser->correct_variables_score),
5557 /* a static adds itself to be generated like any other global
5558 * but is added to the local namespace instead
5560 char *defname = NULL;
5561 size_t prefix_len, ln;
5563 ln = strlen(parser->function->name);
5564 vec_append(defname, ln, parser->function->name);
5566 vec_append(defname, 2, "::");
5567 /* remember the length up to here */
5568 prefix_len = vec_size(defname);
5570 /* Add it to the local scope */
5571 util_htset(vec_last(parser->variables), var->name, (void*)var);
5575 vec_last(parser->correct_variables),
5576 &vec_last(parser->correct_variables_score),
5580 /* now rename the global */
5581 ln = strlen(var->name);
5582 vec_append(defname, ln, var->name);
5583 ast_value_set_name(var, defname);
5585 /* push it to the to-be-generated globals */
5586 vec_push(parser->globals, (ast_expression*)var);
5588 /* same game for the vector members */
5590 for (i = 0; i < 3; ++i) {
5591 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5595 vec_last(parser->correct_variables),
5596 &vec_last(parser->correct_variables_score),
5600 vec_shrinkto(defname, prefix_len);
5601 ln = strlen(me[i]->name);
5602 vec_append(defname, ln, me[i]->name);
5603 ast_member_set_name(me[i], defname);
5605 vec_push(parser->globals, (ast_expression*)me[i]);
5610 vec_push(localblock->locals, var);
5611 parser_addlocal(parser, var->name, (ast_expression*)var);
5613 for (i = 0; i < 3; ++i) {
5614 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5615 ast_block_collect(localblock, (ast_expression*)me[i]);
5621 me[0] = me[1] = me[2] = NULL;
5626 if (var->expression.vtype == TYPE_ARRAY) {
5628 util_snprintf(name, sizeof(name), "%s##SET", var->name);
5629 if (!parser_create_array_setter(parser, var, name))
5631 util_snprintf(name, sizeof(name), "%s##GET", var->name);
5632 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5635 else if (!localblock && !nofields &&
5636 var->expression.vtype == TYPE_FIELD &&
5637 var->expression.next->vtype == TYPE_ARRAY)
5640 ast_expression *telem;
5642 ast_value *array = (ast_value*)var->expression.next;
5644 if (!ast_istype(var->expression.next, ast_value)) {
5645 parseerror(parser, "internal error: field element type must be an ast_value");
5649 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5650 if (!parser_create_array_field_setter(parser, array, name))
5653 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5654 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5655 tfield->expression.next = telem;
5656 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5657 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5665 if (parser->tok == ';') {
5666 ast_delete(basetype);
5667 if (!parser_next(parser)) {
5668 parseerror(parser, "error after variable declaration");
5674 if (parser->tok == ',')
5678 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5681 parseerror(parser, "missing comma or semicolon while parsing variables");
5685 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5686 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5687 "initializing expression turns variable `%s` into a constant in this standard",
5694 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5695 if (parser->tok != '=') {
5696 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5700 if (!parser_next(parser)) {
5701 parseerror(parser, "error parsing initializer");
5705 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5706 parseerror(parser, "expected '=' before function body in this standard");
5709 if (parser->tok == '#') {
5710 ast_function *func = NULL;
5711 ast_value *number = NULL;
5717 parseerror(parser, "cannot declare builtins within functions");
5720 if (var->expression.vtype != TYPE_FUNCTION) {
5721 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5724 if (!parser_next(parser)) {
5725 parseerror(parser, "expected builtin number");
5729 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5730 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5732 parseerror(parser, "builtin number expected");
5735 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5738 parseerror(parser, "builtin number must be a compile time constant");
5741 if (number->expression.vtype == TYPE_INTEGER)
5742 builtin_num = number->constval.vint;
5743 else if (number->expression.vtype == TYPE_FLOAT)
5744 builtin_num = number->constval.vfloat;
5747 parseerror(parser, "builtin number must be an integer constant");
5752 fractional = modff(builtin_num, &integral);
5753 if (builtin_num < 0 || fractional != 0) {
5754 parseerror(parser, "builtin number must be an integer greater than zero");
5758 /* we only want the integral part anyways */
5759 builtin_num = integral;
5760 } else if (parser->tok == TOKEN_INTCONST) {
5761 builtin_num = parser_token(parser)->constval.i;
5763 parseerror(parser, "builtin number must be a compile time constant");
5767 if (var->hasvalue) {
5768 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5769 "builtin `%s` has already been defined\n"
5770 " -> previous declaration here: %s:%i",
5771 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5775 func = ast_function_new(ast_ctx(var), var->name, var);
5777 parseerror(parser, "failed to allocate function for `%s`", var->name);
5780 vec_push(parser->functions, func);
5782 func->builtin = -builtin_num-1;
5785 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5786 ? (parser->tok != ',' && parser->tok != ';')
5787 : (!parser_next(parser)))
5789 parseerror(parser, "expected comma or semicolon");
5791 ast_function_delete(func);
5792 var->constval.vfunc = NULL;
5796 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
5799 /* Note that fteqcc and most others don't even *have*
5800 * local arrays, so this is not a high priority.
5802 parseerror(parser, "TODO: initializers for local arrays");
5806 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
5808 parseerror(parser, "TODO: initializing global arrays is not supported yet!");
5811 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
5814 parseerror(parser, "cannot declare functions within functions");
5819 ast_ctx(proto) = parser_ctx(parser);
5821 if (!parse_function_body(parser, var))
5823 ast_delete(basetype);
5824 for (i = 0; i < vec_size(parser->gotos); ++i)
5825 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5826 vec_free(parser->gotos);
5827 vec_free(parser->labels);
5830 ast_expression *cexp;
5833 cexp = parse_expression_leave(parser, true, false, false);
5838 cval = (ast_value*)cexp;
5839 if (cval != parser->nil &&
5840 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5843 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5847 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5848 qualifier != CV_VAR)
5850 var->cvq = CV_CONST;
5852 if (cval == parser->nil)
5853 var->expression.flags |= AST_FLAG_INITIALIZED;
5856 var->hasvalue = true;
5857 if (cval->expression.vtype == TYPE_STRING)
5858 var->constval.vstring = parser_strdup(cval->constval.vstring);
5859 else if (cval->expression.vtype == TYPE_FIELD)
5860 var->constval.vfield = cval;
5862 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5868 shunt sy = { NULL, NULL, NULL, NULL };
5871 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5872 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5873 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5874 if (!parser_sy_apply_operator(parser, &sy))
5877 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5878 parseerror(parser, "internal error: leaked operands");
5879 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5890 if (parser->tok == ',') {
5891 if (!parser_next(parser)) {
5892 parseerror(parser, "expected another variable");
5896 if (parser->tok != TOKEN_IDENT) {
5897 parseerror(parser, "expected another variable");
5900 var = ast_value_copy(basetype);
5902 ast_value_set_name(var, parser_tokval(parser));
5903 if (!parser_next(parser)) {
5904 parseerror(parser, "error parsing variable declaration");
5910 if (parser->tok != ';') {
5911 parseerror(parser, "missing semicolon after variables");
5915 if (!parser_next(parser)) {
5916 parseerror(parser, "parse error after variable declaration");
5920 ast_delete(basetype);
5924 if (cleanvar && var)
5926 ast_delete(basetype);
5930 ast_delete(basetype);
5931 if (cleanvar && var)
5933 if (me[0]) ast_member_delete(me[0]);
5934 if (me[1]) ast_member_delete(me[1]);
5935 if (me[2]) ast_member_delete(me[2]);
5939 static bool parser_global_statement(parser_t *parser)
5943 bool is_static = false;
5944 uint32_t qflags = 0;
5945 ast_value *istype = NULL;
5946 char *vstring = NULL;
5948 if (parser->tok == TOKEN_IDENT)
5949 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5951 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5953 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5955 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5957 if (cvq == CV_WRONG)
5959 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5961 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5963 return parse_enum(parser);
5965 else if (parser->tok == TOKEN_KEYWORD)
5967 if (!strcmp(parser_tokval(parser), "typedef")) {
5968 if (!parser_next(parser)) {
5969 parseerror(parser, "expected type definition after 'typedef'");
5972 return parse_typedef(parser);
5974 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5977 else if (parser->tok == '#')
5979 return parse_pragma(parser);
5981 else if (parser->tok == '$')
5983 if (!parser_next(parser)) {
5984 parseerror(parser, "parse error");
5990 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
5996 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5998 return util_crc16(old, str, strlen(str));
6001 static void progdefs_crc_file(const char *str)
6003 /* write to progdefs.h here */
6007 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
6009 old = progdefs_crc_sum(old, str);
6010 progdefs_crc_file(str);
6014 static void generate_checksum(parser_t *parser)
6016 uint16_t crc = 0xFFFF;
6020 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
6021 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
6023 progdefs_crc_file("\tint\tpad;\n");
6024 progdefs_crc_file("\tint\tofs_return[3];\n");
6025 progdefs_crc_file("\tint\tofs_parm0[3];\n");
6026 progdefs_crc_file("\tint\tofs_parm1[3];\n");
6027 progdefs_crc_file("\tint\tofs_parm2[3];\n");
6028 progdefs_crc_file("\tint\tofs_parm3[3];\n");
6029 progdefs_crc_file("\tint\tofs_parm4[3];\n");
6030 progdefs_crc_file("\tint\tofs_parm5[3];\n");
6031 progdefs_crc_file("\tint\tofs_parm6[3];\n");
6032 progdefs_crc_file("\tint\tofs_parm7[3];\n");
6034 for (i = 0; i < parser->crc_globals; ++i) {
6035 if (!ast_istype(parser->globals[i], ast_value))
6037 value = (ast_value*)(parser->globals[i]);
6038 switch (value->expression.vtype) {
6039 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6040 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6041 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6042 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6044 crc = progdefs_crc_both(crc, "\tint\t");
6047 crc = progdefs_crc_both(crc, value->name);
6048 crc = progdefs_crc_both(crc, ";\n");
6050 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
6051 for (i = 0; i < parser->crc_fields; ++i) {
6052 if (!ast_istype(parser->fields[i], ast_value))
6054 value = (ast_value*)(parser->fields[i]);
6055 switch (value->expression.next->vtype) {
6056 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6057 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6058 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6059 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6061 crc = progdefs_crc_both(crc, "\tint\t");
6064 crc = progdefs_crc_both(crc, value->name);
6065 crc = progdefs_crc_both(crc, ";\n");
6067 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
6069 parser->code->crc = crc;
6072 parser_t *parser_create()
6078 parser = (parser_t*)mem_a(sizeof(parser_t));
6082 memset(parser, 0, sizeof(*parser));
6084 if (!(parser->code = code_init())) {
6089 for (i = 0; i < operator_count; ++i) {
6090 if (operators[i].id == opid1('=')) {
6091 parser->assign_op = operators+i;
6095 if (!parser->assign_op) {
6096 printf("internal error: initializing parser: failed to find assign operator\n");
6101 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
6102 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
6103 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
6104 vec_push(parser->_blocktypedefs, 0);
6106 parser->aliases = util_htnew(PARSER_HT_SIZE);
6108 parser->ht_imm_string = util_htnew(512);
6111 vec_push(parser->correct_variables, correct_trie_new());
6112 vec_push(parser->correct_variables_score, NULL);
6114 empty_ctx.file = "<internal>";
6116 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
6117 parser->nil->cvq = CV_CONST;
6118 if (OPTS_FLAG(UNTYPED_NIL))
6119 util_htset(parser->htglobals, "nil", (void*)parser->nil);
6121 parser->max_param_count = 1;
6123 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
6124 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
6125 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
6127 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
6128 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
6129 parser->reserved_version->cvq = CV_CONST;
6130 parser->reserved_version->hasvalue = true;
6131 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
6132 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
6134 parser->reserved_version = NULL;
6140 static bool parser_compile(parser_t *parser)
6142 /* initial lexer/parser state */
6143 parser->lex->flags.noops = true;
6145 if (parser_next(parser))
6147 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
6149 if (!parser_global_statement(parser)) {
6150 if (parser->tok == TOKEN_EOF)
6151 parseerror(parser, "unexpected eof");
6152 else if (compile_errors)
6153 parseerror(parser, "there have been errors, bailing out");
6154 lex_close(parser->lex);
6160 parseerror(parser, "parse error");
6161 lex_close(parser->lex);
6166 lex_close(parser->lex);
6169 return !compile_errors;
6172 bool parser_compile_file(parser_t *parser, const char *filename)
6174 parser->lex = lex_open(filename);
6176 con_err("failed to open file \"%s\"\n", filename);
6179 return parser_compile(parser);
6182 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
6184 parser->lex = lex_open_string(str, len, name);
6186 con_err("failed to create lexer for string \"%s\"\n", name);
6189 return parser_compile(parser);
6192 void parser_cleanup(parser_t *parser)
6195 for (i = 0; i < vec_size(parser->accessors); ++i) {
6196 ast_delete(parser->accessors[i]->constval.vfunc);
6197 parser->accessors[i]->constval.vfunc = NULL;
6198 ast_delete(parser->accessors[i]);
6200 for (i = 0; i < vec_size(parser->functions); ++i) {
6201 ast_delete(parser->functions[i]);
6203 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6204 ast_delete(parser->imm_vector[i]);
6206 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6207 ast_delete(parser->imm_string[i]);
6209 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6210 ast_delete(parser->imm_float[i]);
6212 for (i = 0; i < vec_size(parser->fields); ++i) {
6213 ast_delete(parser->fields[i]);
6215 for (i = 0; i < vec_size(parser->globals); ++i) {
6216 ast_delete(parser->globals[i]);
6218 vec_free(parser->accessors);
6219 vec_free(parser->functions);
6220 vec_free(parser->imm_vector);
6221 vec_free(parser->imm_string);
6222 util_htdel(parser->ht_imm_string);
6223 vec_free(parser->imm_float);
6224 vec_free(parser->globals);
6225 vec_free(parser->fields);
6227 for (i = 0; i < vec_size(parser->variables); ++i)
6228 util_htdel(parser->variables[i]);
6229 vec_free(parser->variables);
6230 vec_free(parser->_blocklocals);
6231 vec_free(parser->_locals);
6234 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
6235 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
6237 vec_free(parser->correct_variables);
6238 vec_free(parser->correct_variables_score);
6241 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6242 ast_delete(parser->_typedefs[i]);
6243 vec_free(parser->_typedefs);
6244 for (i = 0; i < vec_size(parser->typedefs); ++i)
6245 util_htdel(parser->typedefs[i]);
6246 vec_free(parser->typedefs);
6247 vec_free(parser->_blocktypedefs);
6249 vec_free(parser->_block_ctx);
6251 vec_free(parser->labels);
6252 vec_free(parser->gotos);
6253 vec_free(parser->breaks);
6254 vec_free(parser->continues);
6256 ast_value_delete(parser->nil);
6258 ast_value_delete(parser->const_vec[0]);
6259 ast_value_delete(parser->const_vec[1]);
6260 ast_value_delete(parser->const_vec[2]);
6262 util_htdel(parser->aliases);
6264 intrin_intrinsics_destroy(parser);
6266 code_cleanup(parser->code);
6271 bool parser_finish(parser_t *parser, const char *output)
6277 if (compile_errors) {
6278 con_out("*** there were compile errors\n");
6282 ir = ir_builder_new("gmqcc_out");
6284 con_out("failed to allocate builder\n");
6288 for (i = 0; i < vec_size(parser->fields); ++i) {
6291 if (!ast_istype(parser->fields[i], ast_value))
6293 field = (ast_value*)parser->fields[i];
6294 hasvalue = field->hasvalue;
6295 field->hasvalue = false;
6296 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6297 con_out("failed to generate field %s\n", field->name);
6298 ir_builder_delete(ir);
6303 ast_expression *subtype;
6304 field->hasvalue = true;
6305 subtype = field->expression.next;
6306 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6307 if (subtype->vtype == TYPE_FIELD)
6308 ifld->fieldtype = subtype->next->vtype;
6309 else if (subtype->vtype == TYPE_FUNCTION)
6310 ifld->outtype = subtype->next->vtype;
6311 (void)!ir_value_set_field(field->ir_v, ifld);
6314 for (i = 0; i < vec_size(parser->globals); ++i) {
6316 if (!ast_istype(parser->globals[i], ast_value))
6318 asvalue = (ast_value*)(parser->globals[i]);
6319 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6320 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6321 "unused global: `%s`", asvalue->name);
6323 if (!ast_global_codegen(asvalue, ir, false)) {
6324 con_out("failed to generate global %s\n", asvalue->name);
6325 ir_builder_delete(ir);
6329 /* Build function vararg accessor ast tree now before generating
6330 * immediates, because the accessors may add new immediates
6332 for (i = 0; i < vec_size(parser->functions); ++i) {
6333 ast_function *f = parser->functions[i];
6335 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6336 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6337 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6338 con_out("failed to generate vararg setter for %s\n", f->name);
6339 ir_builder_delete(ir);
6342 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6343 con_out("failed to generate vararg getter for %s\n", f->name);
6344 ir_builder_delete(ir);
6348 ast_delete(f->varargs);
6353 /* Now we can generate immediates */
6354 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6355 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
6356 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
6357 ir_builder_delete(ir);
6361 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6362 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
6363 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
6364 ir_builder_delete(ir);
6368 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6369 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
6370 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
6371 ir_builder_delete(ir);
6375 for (i = 0; i < vec_size(parser->globals); ++i) {
6377 if (!ast_istype(parser->globals[i], ast_value))
6379 asvalue = (ast_value*)(parser->globals[i]);
6380 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6382 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6383 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6384 "uninitialized constant: `%s`",
6386 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6387 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6388 "uninitialized global: `%s`",
6391 if (!ast_generate_accessors(asvalue, ir)) {
6392 ir_builder_delete(ir);
6396 for (i = 0; i < vec_size(parser->fields); ++i) {
6398 asvalue = (ast_value*)(parser->fields[i]->next);
6400 if (!ast_istype((ast_expression*)asvalue, ast_value))
6402 if (asvalue->expression.vtype != TYPE_ARRAY)
6404 if (!ast_generate_accessors(asvalue, ir)) {
6405 ir_builder_delete(ir);
6409 if (parser->reserved_version &&
6410 !ast_global_codegen(parser->reserved_version, ir, false))
6412 con_out("failed to generate reserved::version");
6413 ir_builder_delete(ir);
6416 for (i = 0; i < vec_size(parser->functions); ++i) {
6417 ast_function *f = parser->functions[i];
6418 if (!ast_function_codegen(f, ir)) {
6419 con_out("failed to generate function %s\n", f->name);
6420 ir_builder_delete(ir);
6424 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6425 ir_builder_dump(ir, con_out);
6426 for (i = 0; i < vec_size(parser->functions); ++i) {
6427 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6428 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6429 ir_builder_delete(ir);
6434 if (compile_Werrors) {
6435 con_out("*** there were warnings treated as errors\n");
6436 compile_show_werrors();
6441 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6442 ir_builder_dump(ir, con_out);
6444 generate_checksum(parser);
6446 if (!ir_builder_generate(parser->code, ir, output)) {
6447 con_out("*** failed to generate output file\n");
6448 ir_builder_delete(ir);
6453 ir_builder_delete(ir);