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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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 {
44 ast_expression **globals;
45 ast_expression **fields;
46 ast_function **functions;
47 ast_value **imm_float;
48 ast_value **imm_string;
49 ast_value **imm_vector;
54 /* must be deleted first, they reference immediates and values */
55 ast_value **accessors;
57 ast_value *imm_float_zero;
58 ast_value *imm_float_one;
59 ast_value *imm_float_neg_one;
61 ast_value *imm_vector_zero;
64 ast_value *reserved_version;
69 ast_function *function;
72 /* All the labels the function defined...
73 * Should they be in ast_function instead?
78 const char **continues;
80 /* A list of hashtables for each scope */
86 /* same as above but for the spelling corrector */
87 correct_trie_t **correct_variables;
88 size_t ***correct_variables_score; /* vector of vector of size_t* */
90 /* not to be used directly, we use the hash table */
91 ast_expression **_locals;
93 ast_value **_typedefs;
94 size_t *_blocktypedefs;
97 /* we store the '=' operator info */
98 const oper_info *assign_op;
101 ast_value *const_vec[3];
106 /* collected information */
107 size_t max_param_count;
113 static ast_expression * const intrinsic_debug_typestring = (ast_expression*)0x1;
115 static void parser_enterblock(parser_t *parser);
116 static bool parser_leaveblock(parser_t *parser);
117 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
118 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
119 static bool parse_typedef(parser_t *parser);
120 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);
121 static ast_block* parse_block(parser_t *parser);
122 static bool parse_block_into(parser_t *parser, ast_block *block);
123 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
124 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
125 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
126 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
127 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname);
128 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname);
129 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
131 static void parseerror(parser_t *parser, const char *fmt, ...)
135 vcompile_error(parser->lex->tok.ctx, fmt, ap);
139 /* returns true if it counts as an error */
140 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
145 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
150 /**********************************************************************
151 * some maths used for constant folding
154 vector vec3_add(vector a, vector b)
163 vector vec3_sub(vector a, vector b)
172 qcfloat vec3_mulvv(vector a, vector b)
174 return (a.x * b.x + a.y * b.y + a.z * b.z);
177 vector vec3_mulvf(vector a, float b)
186 /**********************************************************************
190 static bool parser_next(parser_t *parser)
192 /* lex_do kills the previous token */
193 parser->tok = lex_do(parser->lex);
194 if (parser->tok == TOKEN_EOF)
196 if (parser->tok >= TOKEN_ERROR) {
197 parseerror(parser, "lex error");
203 #define parser_tokval(p) ((p)->lex->tok.value)
204 #define parser_token(p) (&((p)->lex->tok))
205 #define parser_ctx(p) ((p)->lex->tok.ctx)
207 static ast_value* parser_const_float(parser_t *parser, double d)
212 for (i = 0; i < vec_size(parser->imm_float); ++i) {
213 const double compare = parser->imm_float[i]->constval.vfloat;
214 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
215 return parser->imm_float[i];
218 ctx = parser_ctx(parser);
220 memset(&ctx, 0, sizeof(ctx));
222 out = ast_value_new(ctx, "#IMMEDIATE", TYPE_FLOAT);
224 out->hasvalue = true;
226 out->constval.vfloat = d;
227 vec_push(parser->imm_float, out);
231 static ast_value* parser_const_float_0(parser_t *parser)
233 if (!parser->imm_float_zero)
234 parser->imm_float_zero = parser_const_float(parser, 0);
235 return parser->imm_float_zero;
238 static ast_value* parser_const_float_neg1(parser_t *parser) {
239 if (!parser->imm_float_neg_one)
240 parser->imm_float_neg_one = parser_const_float(parser, -1);
241 return parser->imm_float_neg_one;
244 static ast_value* parser_const_float_1(parser_t *parser)
246 if (!parser->imm_float_one)
247 parser->imm_float_one = parser_const_float(parser, 1);
248 return parser->imm_float_one;
251 static char *parser_strdup(const char *str)
254 /* actually dup empty strings */
255 char *out = (char*)mem_a(1);
259 return util_strdup(str);
262 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
264 size_t hash = util_hthash(parser->ht_imm_string, str);
266 if ( (out = (ast_value*)util_htgeth(parser->ht_imm_string, str, hash)) ) {
267 if (dotranslate && out->name[0] == '#') {
269 util_snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
270 ast_value_set_name(out, name);
271 out->expression.flags |= AST_FLAG_INCLUDE_DEF;
276 for (i = 0; i < vec_size(parser->imm_string); ++i) {
277 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
278 return parser->imm_string[i];
283 util_snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
284 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
285 out->expression.flags |= AST_FLAG_INCLUDE_DEF;
287 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
289 out->hasvalue = true;
291 out->constval.vstring = parser_strdup(str);
292 vec_push(parser->imm_string, out);
293 util_htseth(parser->ht_imm_string, str, hash, out);
297 static ast_value* parser_const_vector(parser_t *parser, vector v)
301 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
302 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
303 return parser->imm_vector[i];
305 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
307 out->hasvalue = true;
309 out->constval.vvec = v;
310 vec_push(parser->imm_vector, out);
314 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
320 return parser_const_vector(parser, v);
323 static ast_value* parser_const_vector_0(parser_t *parser)
325 if (!parser->imm_vector_zero)
326 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
327 return parser->imm_vector_zero;
330 static ast_expression* parser_find_field(parser_t *parser, const char *name)
332 return ( ast_expression*)util_htget(parser->htfields, name);
335 static ast_expression* parser_find_label(parser_t *parser, const char *name)
338 for(i = 0; i < vec_size(parser->labels); i++)
339 if (!strcmp(parser->labels[i]->name, name))
340 return (ast_expression*)parser->labels[i];
344 static ast_expression* parser_find_global(parser_t *parser, const char *name)
346 ast_expression *var = (ast_expression*)util_htget(parser->aliases, parser_tokval(parser));
349 return (ast_expression*)util_htget(parser->htglobals, name);
352 static ast_expression* parser_find_param(parser_t *parser, const char *name)
356 if (!parser->function)
358 fun = parser->function->vtype;
359 for (i = 0; i < vec_size(fun->expression.params); ++i) {
360 if (!strcmp(fun->expression.params[i]->name, name))
361 return (ast_expression*)(fun->expression.params[i]);
366 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
371 hash = util_hthash(parser->htglobals, name);
374 for (i = vec_size(parser->variables); i > upto;) {
376 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
380 return parser_find_param(parser, name);
383 static ast_expression* parser_find_var(parser_t *parser, const char *name)
387 v = parser_find_local(parser, name, 0, &dummy);
388 if (!v) v = parser_find_global(parser, name);
392 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
396 hash = util_hthash(parser->typedefs[0], name);
398 for (i = vec_size(parser->typedefs); i > upto;) {
400 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
406 /* include intrinsics */
411 size_t etype; /* 0 = expression, others are operators */
415 ast_block *block; /* for commas and function calls */
434 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
445 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
449 e.out = (ast_expression*)v;
456 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
458 e.etype = 1 + (op - operators);
467 static sy_elem syparen(lex_ctx ctx, size_t off) {
478 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
479 * so we need to rotate it to become ent.(foo[n]).
481 static bool rotate_entfield_array_index_nodes(ast_expression **out)
483 ast_array_index *index, *oldindex;
484 ast_entfield *entfield;
488 ast_expression *entity;
490 lex_ctx ctx = ast_ctx(*out);
492 if (!ast_istype(*out, ast_array_index))
494 index = (ast_array_index*)*out;
496 if (!ast_istype(index->array, ast_entfield))
498 entfield = (ast_entfield*)index->array;
500 if (!ast_istype(entfield->field, ast_value))
502 field = (ast_value*)entfield->field;
505 entity = entfield->entity;
509 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
510 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
511 *out = (ast_expression*)entfield;
513 oldindex->array = NULL;
514 oldindex->index = NULL;
515 ast_delete(oldindex);
520 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
522 switch (v->expression.vtype) {
524 return !!v->constval.vfloat;
526 return !!v->constval.vint;
528 if (OPTS_FLAG(CORRECT_LOGIC))
529 return v->constval.vvec.x &&
530 v->constval.vvec.y &&
533 return !!(v->constval.vvec.x);
535 if (!v->constval.vstring)
537 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
539 return !!v->constval.vstring[0];
541 compile_error(ctx, "internal error: immediate_is_true on invalid type");
542 return !!v->constval.vfunc;
546 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
550 ast_expression *out = NULL;
551 ast_expression *exprs[3];
552 ast_block *blocks[3];
553 ast_value *asvalue[3];
554 ast_binstore *asbinstore;
555 size_t i, assignop, addop, subop;
556 qcint generated_op = 0;
561 if (!vec_size(sy->ops)) {
562 parseerror(parser, "internal error: missing operator");
566 if (vec_last(sy->ops).isparen) {
567 parseerror(parser, "unmatched parenthesis");
571 op = &operators[vec_last(sy->ops).etype - 1];
572 ctx = vec_last(sy->ops).ctx;
574 if (vec_size(sy->out) < op->operands) {
575 compile_error(ctx, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
576 op->op, (int)op->id);
580 vec_shrinkby(sy->ops, 1);
582 /* op(:?) has no input and no output */
586 vec_shrinkby(sy->out, op->operands);
587 for (i = 0; i < op->operands; ++i) {
588 exprs[i] = sy->out[vec_size(sy->out)+i].out;
589 blocks[i] = sy->out[vec_size(sy->out)+i].block;
590 asvalue[i] = (ast_value*)exprs[i];
592 if (exprs[i]->vtype == TYPE_NOEXPR &&
593 !(i != 0 && op->id == opid2('?',':')) &&
594 !(i == 1 && op->id == opid1('.')))
596 if (ast_istype(exprs[i], ast_label))
597 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
599 compile_error(ast_ctx(exprs[i]), "not an expression");
600 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
604 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
605 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
609 #define NotSameType(T) \
610 (exprs[0]->vtype != exprs[1]->vtype || \
611 exprs[0]->vtype != T)
612 #define CanConstFold1(A) \
613 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
614 (A)->vtype != TYPE_FUNCTION)
615 #define CanConstFold(A, B) \
616 (CanConstFold1(A) && CanConstFold1(B))
617 #define ConstV(i) (asvalue[(i)]->constval.vvec)
618 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
619 #define ConstS(i) (asvalue[(i)]->constval.vstring)
623 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
627 if (exprs[0]->vtype == TYPE_VECTOR &&
628 exprs[1]->vtype == TYPE_NOEXPR)
630 if (exprs[1] == (ast_expression*)parser->const_vec[0])
631 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
632 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
633 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
634 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
635 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
637 compile_error(ctx, "access to invalid vector component");
641 else if (exprs[0]->vtype == TYPE_ENTITY) {
642 if (exprs[1]->vtype != TYPE_FIELD) {
643 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
646 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
648 else if (exprs[0]->vtype == TYPE_VECTOR) {
649 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
653 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
659 if (exprs[0]->vtype != TYPE_ARRAY &&
660 !(exprs[0]->vtype == TYPE_FIELD &&
661 exprs[0]->next->vtype == TYPE_ARRAY))
663 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
664 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
667 if (exprs[1]->vtype != TYPE_FLOAT) {
668 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
669 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
672 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
673 if (rotate_entfield_array_index_nodes(&out))
676 /* This is not broken in fteqcc anymore */
677 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
678 /* this error doesn't need to make us bail out */
679 (void)!parsewarning(parser, WARN_EXTENSIONS,
680 "accessing array-field members of an entity without parenthesis\n"
681 " -> this is an extension from -std=gmqcc");
688 if (vec_size(sy->paren) && vec_last(sy->paren) == PAREN_FUNC) {
689 vec_push(sy->out, syexp(ctx, exprs[0]));
690 vec_push(sy->out, syexp(ctx, exprs[1]));
691 vec_last(sy->argc)++;
695 if (!ast_block_add_expr(blocks[0], exprs[1]))
698 blocks[0] = ast_block_new(ctx);
699 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
700 !ast_block_add_expr(blocks[0], exprs[1]))
705 ast_block_set_type(blocks[0], exprs[1]);
707 vec_push(sy->out, syblock(ctx, blocks[0]));
714 switch (exprs[0]->vtype) {
716 if (CanConstFold1(exprs[0]))
717 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
719 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
720 (ast_expression*)parser_const_float_0(parser),
724 if (CanConstFold1(exprs[0]))
725 out = (ast_expression*)parser_const_vector_f(parser,
726 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
728 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
729 (ast_expression*)parser_const_vector_0(parser),
733 compile_error(ctx, "invalid types used in expression: cannot negate type %s",
734 type_name[exprs[0]->vtype]);
740 switch (exprs[0]->vtype) {
742 if (CanConstFold1(exprs[0]))
743 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
745 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
748 if (CanConstFold1(exprs[0]))
749 out = (ast_expression*)parser_const_float(parser,
750 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
752 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
755 if (CanConstFold1(exprs[0])) {
756 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
757 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
759 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
761 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
762 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
764 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
767 /* we don't constant-fold NOT for these types */
769 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
772 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
775 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
776 type_name[exprs[0]->vtype]);
782 if (exprs[0]->vtype != exprs[1]->vtype ||
783 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
785 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
786 type_name[exprs[0]->vtype],
787 type_name[exprs[1]->vtype]);
790 switch (exprs[0]->vtype) {
792 if (CanConstFold(exprs[0], exprs[1]))
794 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
797 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
800 if (CanConstFold(exprs[0], exprs[1]))
801 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
803 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
806 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
807 type_name[exprs[0]->vtype],
808 type_name[exprs[1]->vtype]);
813 if (exprs[0]->vtype != exprs[1]->vtype ||
814 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
816 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
817 type_name[exprs[1]->vtype],
818 type_name[exprs[0]->vtype]);
821 switch (exprs[0]->vtype) {
823 if (CanConstFold(exprs[0], exprs[1]))
824 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
826 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
829 if (CanConstFold(exprs[0], exprs[1]))
830 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
832 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
835 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
836 type_name[exprs[1]->vtype],
837 type_name[exprs[0]->vtype]);
842 if (exprs[0]->vtype != exprs[1]->vtype &&
843 !(exprs[0]->vtype == TYPE_VECTOR &&
844 exprs[1]->vtype == TYPE_FLOAT) &&
845 !(exprs[1]->vtype == TYPE_VECTOR &&
846 exprs[0]->vtype == TYPE_FLOAT)
849 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
850 type_name[exprs[1]->vtype],
851 type_name[exprs[0]->vtype]);
854 switch (exprs[0]->vtype) {
856 if (exprs[1]->vtype == TYPE_VECTOR)
858 if (CanConstFold(exprs[0], exprs[1]))
859 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
861 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
865 if (CanConstFold(exprs[0], exprs[1]))
866 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
868 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
872 if (exprs[1]->vtype == TYPE_FLOAT)
874 if (CanConstFold(exprs[0], exprs[1]))
875 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
877 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
881 if (CanConstFold(exprs[0], exprs[1]))
882 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
883 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[0])) {
884 vector vec = ConstV(0);
885 if (!vec.y && !vec.z) { /* 'n 0 0' * v */
886 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
887 out = (ast_expression*)ast_member_new(ctx, exprs[1], 0, NULL);
888 out->node.keep = false;
889 ((ast_member*)out)->rvalue = true;
891 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.x), out);
893 else if (!vec.x && !vec.z) { /* '0 n 0' * v */
894 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
895 out = (ast_expression*)ast_member_new(ctx, exprs[1], 1, NULL);
896 out->node.keep = false;
897 ((ast_member*)out)->rvalue = true;
899 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.y), out);
901 else if (!vec.x && !vec.y) { /* '0 n 0' * v */
902 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
903 out = (ast_expression*)ast_member_new(ctx, exprs[1], 2, NULL);
904 out->node.keep = false;
905 ((ast_member*)out)->rvalue = true;
907 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.z), out);
910 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
912 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[1])) {
913 vector vec = ConstV(1);
914 if (!vec.y && !vec.z) { /* v * 'n 0 0' */
915 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
916 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
917 out->node.keep = false;
918 ((ast_member*)out)->rvalue = true;
920 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.x));
922 else if (!vec.x && !vec.z) { /* v * '0 n 0' */
923 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
924 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
925 out->node.keep = false;
926 ((ast_member*)out)->rvalue = true;
928 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.y));
930 else if (!vec.x && !vec.y) { /* v * '0 n 0' */
931 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
932 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
933 out->node.keep = false;
934 ((ast_member*)out)->rvalue = true;
936 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.z));
939 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
942 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
946 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
947 type_name[exprs[1]->vtype],
948 type_name[exprs[0]->vtype]);
953 if (exprs[1]->vtype != TYPE_FLOAT) {
954 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
955 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
956 compile_error(ctx, "invalid types used in expression: cannot divide tyeps %s and %s", ty1, ty2);
959 if (exprs[0]->vtype == TYPE_FLOAT) {
960 if (CanConstFold(exprs[0], exprs[1]))
961 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
963 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
965 else if (exprs[0]->vtype == TYPE_VECTOR) {
966 if (CanConstFold(exprs[0], exprs[1]))
967 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), 1.0/ConstF(1)));
969 if (CanConstFold1(exprs[1])) {
970 out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
972 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
973 (ast_expression*)parser_const_float_1(parser),
977 compile_error(ctx, "internal error: failed to generate division");
980 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], out);
985 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
986 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
987 compile_error(ctx, "invalid types used in expression: cannot divide tyeps %s and %s", ty1, ty2);
993 if (NotSameType(TYPE_FLOAT)) {
994 compile_error(ctx, "invalid types used in expression: cannot perform modulo operation between types %s and %s",
995 type_name[exprs[0]->vtype],
996 type_name[exprs[1]->vtype]);
999 if (CanConstFold(exprs[0], exprs[1])) {
1000 out = (ast_expression*)parser_const_float(parser,
1001 (float)(((qcint)ConstF(0)) % ((qcint)ConstF(1))));
1003 /* generate a call to __builtin_mod */
1004 ast_expression *mod = intrin_func(parser, "mod");
1005 ast_call *call = NULL;
1006 if (!mod) return false; /* can return null for missing floor */
1008 call = ast_call_new(parser_ctx(parser), mod);
1009 vec_push(call->params, exprs[0]);
1010 vec_push(call->params, exprs[1]);
1012 out = (ast_expression*)call;
1016 case opid2('%','='):
1017 compile_error(ctx, "%= is unimplemented");
1022 if (NotSameType(TYPE_FLOAT)) {
1023 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
1024 type_name[exprs[0]->vtype],
1025 type_name[exprs[1]->vtype]);
1028 if (CanConstFold(exprs[0], exprs[1]))
1029 out = (ast_expression*)parser_const_float(parser,
1030 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
1031 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
1033 out = (ast_expression*)ast_binary_new(ctx,
1034 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
1035 exprs[0], exprs[1]);
1038 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor via ^");
1041 case opid2('<','<'):
1042 case opid2('>','>'):
1043 if (CanConstFold(exprs[0], exprs[1]) && ! NotSameType(TYPE_FLOAT)) {
1044 if (op->id == opid2('<','<'))
1045 out = (ast_expression*)parser_const_float(parser, (double)((unsigned int)(ConstF(0)) << (unsigned int)(ConstF(1))));
1047 out = (ast_expression*)parser_const_float(parser, (double)((unsigned int)(ConstF(0)) >> (unsigned int)(ConstF(1))));
1050 case opid3('<','<','='):
1051 case opid3('>','>','='):
1052 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
1055 case opid2('|','|'):
1056 generated_op += 1; /* INSTR_OR */
1057 case opid2('&','&'):
1058 generated_op += INSTR_AND;
1059 if (CanConstFold(exprs[0], exprs[1]))
1061 if (OPTS_FLAG(PERL_LOGIC)) {
1062 if (immediate_is_true(ctx, asvalue[0]))
1066 out = (ast_expression*)parser_const_float(parser,
1067 ( (generated_op == INSTR_OR)
1068 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
1069 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
1074 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
1075 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1076 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1077 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
1080 for (i = 0; i < 2; ++i) {
1081 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->vtype == TYPE_VECTOR) {
1082 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
1084 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1086 exprs[i] = out; out = NULL;
1087 if (OPTS_FLAG(PERL_LOGIC)) {
1088 /* here we want to keep the right expressions' type */
1092 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->vtype == TYPE_STRING) {
1093 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
1095 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1097 exprs[i] = out; out = NULL;
1098 if (OPTS_FLAG(PERL_LOGIC)) {
1099 /* here we want to keep the right expressions' type */
1104 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1108 case opid2('?',':'):
1109 if (vec_last(sy->paren) != PAREN_TERNARY2) {
1110 compile_error(ctx, "mismatched parenthesis/ternary");
1114 if (!ast_compare_type(exprs[1], exprs[2])) {
1115 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
1116 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
1117 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
1120 if (CanConstFold1(exprs[0]))
1121 out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
1123 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
1126 case opid2('*', '*'):
1127 if (NotSameType(TYPE_FLOAT)) {
1128 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1129 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1130 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
1136 if (CanConstFold(exprs[0], exprs[1])) {
1137 out = (ast_expression*)parser_const_float(parser, powf(ConstF(0), ConstF(1)));
1139 ast_call *gencall = ast_call_new(parser_ctx(parser), intrin_func(parser, "pow"));
1140 vec_push(gencall->params, exprs[0]);
1141 vec_push(gencall->params, exprs[1]);
1142 out = (ast_expression*)gencall;
1146 case opid3('<','=','>'): /* -1, 0, or 1 */
1147 if (NotSameType(TYPE_FLOAT)) {
1148 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1149 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1150 compile_error(ctx, "invalid types used in comparision: %s and %s",
1156 if (CanConstFold(exprs[0], exprs[1])) {
1157 if (ConstF(0) < ConstF(1))
1158 out = (ast_expression*)parser_const_float_neg1(parser);
1159 else if (ConstF(0) == ConstF(1))
1160 out = (ast_expression*)parser_const_float_0(parser);
1161 else if (ConstF(0) > ConstF(1))
1162 out = (ast_expression*)parser_const_float_1(parser);
1164 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
1166 eq->refs = (ast_binary_ref)false; /* references nothing */
1169 out = (ast_expression*)ast_ternary_new(ctx,
1170 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
1172 (ast_expression*)parser_const_float_neg1(parser),
1175 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
1177 (ast_expression*)parser_const_float_0(parser),
1180 (ast_expression*)parser_const_float_1(parser)
1190 generated_op += 1; /* INSTR_GT */
1192 generated_op += 1; /* INSTR_LT */
1193 case opid2('>', '='):
1194 generated_op += 1; /* INSTR_GE */
1195 case opid2('<', '='):
1196 generated_op += INSTR_LE;
1197 if (NotSameType(TYPE_FLOAT)) {
1198 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1199 type_name[exprs[0]->vtype],
1200 type_name[exprs[1]->vtype]);
1203 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1205 case opid2('!', '='):
1206 if (exprs[0]->vtype != exprs[1]->vtype) {
1207 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1208 type_name[exprs[0]->vtype],
1209 type_name[exprs[1]->vtype]);
1212 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->vtype], exprs[0], exprs[1]);
1214 case opid2('=', '='):
1215 if (exprs[0]->vtype != exprs[1]->vtype) {
1216 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1217 type_name[exprs[0]->vtype],
1218 type_name[exprs[1]->vtype]);
1221 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->vtype], exprs[0], exprs[1]);
1225 if (ast_istype(exprs[0], ast_entfield)) {
1226 ast_expression *field = ((ast_entfield*)exprs[0])->field;
1227 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1228 exprs[0]->vtype == TYPE_FIELD &&
1229 exprs[0]->next->vtype == TYPE_VECTOR)
1231 assignop = type_storep_instr[TYPE_VECTOR];
1234 assignop = type_storep_instr[exprs[0]->vtype];
1235 if (assignop == VINSTR_END || !ast_compare_type(field->next, exprs[1]))
1237 ast_type_to_string(field->next, ty1, sizeof(ty1));
1238 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1239 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1240 field->next->vtype == TYPE_FUNCTION &&
1241 exprs[1]->vtype == TYPE_FUNCTION)
1243 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1244 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1247 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1252 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1253 exprs[0]->vtype == TYPE_FIELD &&
1254 exprs[0]->next->vtype == TYPE_VECTOR)
1256 assignop = type_store_instr[TYPE_VECTOR];
1259 assignop = type_store_instr[exprs[0]->vtype];
1262 if (assignop == VINSTR_END) {
1263 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1264 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1265 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1267 else if (!ast_compare_type(exprs[0], exprs[1]))
1269 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1270 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1271 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1272 exprs[0]->vtype == TYPE_FUNCTION &&
1273 exprs[1]->vtype == TYPE_FUNCTION)
1275 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1276 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1279 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1282 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1283 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1285 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1287 case opid3('+','+','P'):
1288 case opid3('-','-','P'):
1290 if (exprs[0]->vtype != TYPE_FLOAT) {
1291 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1292 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
1295 if (op->id == opid3('+','+','P'))
1296 addop = INSTR_ADD_F;
1298 addop = INSTR_SUB_F;
1299 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1300 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1302 if (ast_istype(exprs[0], ast_entfield)) {
1303 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1305 (ast_expression*)parser_const_float_1(parser));
1307 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1309 (ast_expression*)parser_const_float_1(parser));
1312 case opid3('S','+','+'):
1313 case opid3('S','-','-'):
1315 if (exprs[0]->vtype != TYPE_FLOAT) {
1316 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1317 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
1320 if (op->id == opid3('S','+','+')) {
1321 addop = INSTR_ADD_F;
1322 subop = INSTR_SUB_F;
1324 addop = INSTR_SUB_F;
1325 subop = INSTR_ADD_F;
1327 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1328 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1330 if (ast_istype(exprs[0], ast_entfield)) {
1331 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1333 (ast_expression*)parser_const_float_1(parser));
1335 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1337 (ast_expression*)parser_const_float_1(parser));
1341 out = (ast_expression*)ast_binary_new(ctx, subop,
1343 (ast_expression*)parser_const_float_1(parser));
1345 case opid2('+','='):
1346 case opid2('-','='):
1347 if (exprs[0]->vtype != exprs[1]->vtype ||
1348 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
1350 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1351 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1352 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1356 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1357 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1359 if (ast_istype(exprs[0], ast_entfield))
1360 assignop = type_storep_instr[exprs[0]->vtype];
1362 assignop = type_store_instr[exprs[0]->vtype];
1363 switch (exprs[0]->vtype) {
1365 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1366 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1367 exprs[0], exprs[1]);
1370 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1371 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1372 exprs[0], exprs[1]);
1375 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1376 type_name[exprs[0]->vtype],
1377 type_name[exprs[1]->vtype]);
1381 case opid2('*','='):
1382 case opid2('/','='):
1383 if (exprs[1]->vtype != TYPE_FLOAT ||
1384 !(exprs[0]->vtype == TYPE_FLOAT ||
1385 exprs[0]->vtype == TYPE_VECTOR))
1387 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1388 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1389 compile_error(ctx, "invalid types used in expression: %s and %s",
1393 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1394 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1396 if (ast_istype(exprs[0], ast_entfield))
1397 assignop = type_storep_instr[exprs[0]->vtype];
1399 assignop = type_store_instr[exprs[0]->vtype];
1400 switch (exprs[0]->vtype) {
1402 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1403 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1404 exprs[0], exprs[1]);
1407 if (op->id == opid2('*','=')) {
1408 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1409 exprs[0], exprs[1]);
1411 /* there's no DIV_VF */
1412 if (CanConstFold1(exprs[1])) {
1413 out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
1415 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1416 (ast_expression*)parser_const_float_1(parser),
1420 compile_error(ctx, "internal error: failed to generate division");
1423 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1428 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1429 type_name[exprs[0]->vtype],
1430 type_name[exprs[1]->vtype]);
1434 case opid2('&','='):
1435 case opid2('|','='):
1436 if (NotSameType(TYPE_FLOAT)) {
1437 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1438 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1439 compile_error(ctx, "invalid types used in expression: %s and %s",
1443 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1444 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1446 if (ast_istype(exprs[0], ast_entfield))
1447 assignop = type_storep_instr[exprs[0]->vtype];
1449 assignop = type_store_instr[exprs[0]->vtype];
1450 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1451 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1452 exprs[0], exprs[1]);
1454 case opid3('&','~','='):
1455 /* This is like: a &= ~(b);
1456 * But QC has no bitwise-not, so we implement it as
1459 if (NotSameType(TYPE_FLOAT)) {
1460 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1461 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1462 compile_error(ctx, "invalid types used in expression: %s and %s",
1466 if (ast_istype(exprs[0], ast_entfield))
1467 assignop = type_storep_instr[exprs[0]->vtype];
1469 assignop = type_store_instr[exprs[0]->vtype];
1470 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1473 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1474 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1476 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1477 asbinstore->keep_dest = true;
1478 out = (ast_expression*)asbinstore;
1481 case opid2('~', 'P'):
1482 if (exprs[0]->vtype != TYPE_FLOAT) {
1483 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1484 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1488 if(CanConstFold1(exprs[0]))
1489 out = (ast_expression*)parser_const_float(parser, ~(qcint)ConstF(0));
1491 out = (ast_expression*)
1492 ast_binary_new(ctx, INSTR_SUB_F, (ast_expression*)parser_const_float_neg1(parser), exprs[0]);
1498 compile_error(ctx, "failed to apply operator %s", op->op);
1502 vec_push(sy->out, syexp(ctx, out));
1506 static bool parser_close_call(parser_t *parser, shunt *sy)
1508 /* was a function call */
1509 ast_expression *fun;
1510 ast_value *funval = NULL;
1514 size_t paramcount, i;
1516 fid = vec_last(sy->ops).off;
1517 vec_shrinkby(sy->ops, 1);
1519 /* out[fid] is the function
1520 * everything above is parameters...
1522 if (!vec_size(sy->argc)) {
1523 parseerror(parser, "internal error: no argument counter available");
1527 paramcount = vec_last(sy->argc);
1530 if (vec_size(sy->out) < fid) {
1531 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1532 (unsigned long)vec_size(sy->out),
1534 (unsigned long)paramcount);
1538 fun = sy->out[fid].out;
1540 if (fun == intrinsic_debug_typestring) {
1542 if (fid+2 != vec_size(sy->out) ||
1543 vec_last(sy->out).block)
1545 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1548 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1549 ast_unref(vec_last(sy->out).out);
1550 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1551 (ast_expression*)parser_const_string(parser, ty, false));
1552 vec_shrinkby(sy->out, 1);
1556 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1560 if (fid+1 < vec_size(sy->out))
1563 if (fid+1 + paramcount != vec_size(sy->out)) {
1564 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1565 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1569 for (i = 0; i < paramcount; ++i)
1570 vec_push(call->params, sy->out[fid+1 + i].out);
1571 vec_shrinkby(sy->out, paramcount);
1572 (void)!ast_call_check_types(call);
1573 if (parser->max_param_count < paramcount)
1574 parser->max_param_count = paramcount;
1576 if (ast_istype(fun, ast_value)) {
1577 funval = (ast_value*)fun;
1578 if ((fun->flags & AST_FLAG_VARIADIC) &&
1579 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1581 call->va_count = (ast_expression*)parser_const_float(parser, (double)paramcount);
1585 /* overwrite fid, the function, with a call */
1586 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1588 if (fun->vtype != TYPE_FUNCTION) {
1589 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1594 parseerror(parser, "could not determine function return type");
1597 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1599 if (fun->flags & AST_FLAG_DEPRECATED) {
1601 return !parsewarning(parser, WARN_DEPRECATED,
1602 "call to function (which is marked deprecated)\n",
1603 "-> it has been declared here: %s:%i",
1604 ast_ctx(fun).file, ast_ctx(fun).line);
1607 return !parsewarning(parser, WARN_DEPRECATED,
1608 "call to `%s` (which is marked deprecated)\n"
1609 "-> `%s` declared here: %s:%i",
1610 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1612 return !parsewarning(parser, WARN_DEPRECATED,
1613 "call to `%s` (deprecated: %s)\n"
1614 "-> `%s` declared here: %s:%i",
1615 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1619 if (vec_size(fun->params) != paramcount &&
1620 !((fun->flags & AST_FLAG_VARIADIC) &&
1621 vec_size(fun->params) < paramcount))
1623 const char *fewmany = (vec_size(fun->params) > paramcount) ? "few" : "many";
1625 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1626 "too %s parameters for call to %s: expected %i, got %i\n"
1627 " -> `%s` has been declared here: %s:%i",
1628 fewmany, fval->name, (int)vec_size(fun->params), (int)paramcount,
1629 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1631 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1632 "too %s parameters for function call: expected %i, got %i\n"
1633 " -> it has been declared here: %s:%i",
1634 fewmany, (int)vec_size(fun->params), (int)paramcount,
1635 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1642 static bool parser_close_paren(parser_t *parser, shunt *sy)
1644 if (!vec_size(sy->ops)) {
1645 parseerror(parser, "unmatched closing paren");
1649 while (vec_size(sy->ops)) {
1650 if (vec_last(sy->ops).isparen) {
1651 if (vec_last(sy->paren) == PAREN_FUNC) {
1653 if (!parser_close_call(parser, sy))
1657 if (vec_last(sy->paren) == PAREN_EXPR) {
1659 if (!vec_size(sy->out)) {
1660 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1661 vec_shrinkby(sy->ops, 1);
1664 vec_shrinkby(sy->ops, 1);
1667 if (vec_last(sy->paren) == PAREN_INDEX) {
1669 /* pop off the parenthesis */
1670 vec_shrinkby(sy->ops, 1);
1671 /* then apply the index operator */
1672 if (!parser_sy_apply_operator(parser, sy))
1676 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1677 vec_last(sy->paren) = PAREN_TERNARY2;
1678 /* pop off the parenthesis */
1679 vec_shrinkby(sy->ops, 1);
1682 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1685 if (!parser_sy_apply_operator(parser, sy))
1691 static void parser_reclassify_token(parser_t *parser)
1694 for (i = 0; i < operator_count; ++i) {
1695 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1696 parser->tok = TOKEN_OPERATOR;
1702 static ast_expression* parse_vararg_do(parser_t *parser)
1704 ast_expression *idx, *out;
1706 ast_value *funtype = parser->function->vtype;
1708 lex_ctx ctx = parser_ctx(parser);
1710 if (!parser_next(parser) || parser->tok != '(') {
1711 parseerror(parser, "expected parameter index and type in parenthesis");
1714 if (!parser_next(parser)) {
1715 parseerror(parser, "error parsing parameter index");
1719 idx = parse_expression_leave(parser, true, false, false);
1723 if (parser->tok != ',') {
1725 parseerror(parser, "expected comma after parameter index");
1729 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1731 parseerror(parser, "expected typename for vararg");
1735 typevar = parse_typename(parser, NULL, NULL);
1741 if (parser->tok != ')') {
1743 ast_delete(typevar);
1744 parseerror(parser, "expected closing paren");
1749 if (!parser_next(parser)) {
1751 ast_delete(typevar);
1752 parseerror(parser, "parse error after vararg");
1757 if (!parser->function->varargs) {
1759 ast_delete(typevar);
1760 parseerror(parser, "function has no variable argument list");
1764 if (funtype->expression.varparam &&
1765 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1769 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1770 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1771 compile_error(ast_ctx(typevar),
1772 "function was declared to take varargs of type `%s`, requested type is: %s",
1776 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1777 ast_type_adopt(out, typevar);
1778 ast_delete(typevar);
1782 static ast_expression* parse_vararg(parser_t *parser)
1784 bool old_noops = parser->lex->flags.noops;
1786 ast_expression *out;
1788 parser->lex->flags.noops = true;
1789 out = parse_vararg_do(parser);
1791 parser->lex->flags.noops = old_noops;
1795 /* not to be exposed */
1796 extern bool ftepp_predef_exists(const char *name);
1798 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1800 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1801 parser->tok == TOKEN_IDENT &&
1802 !strcmp(parser_tokval(parser), "_"))
1804 /* a translatable string */
1807 parser->lex->flags.noops = true;
1808 if (!parser_next(parser) || parser->tok != '(') {
1809 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1812 parser->lex->flags.noops = false;
1813 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1814 parseerror(parser, "expected a constant string in translatable-string extension");
1817 val = parser_const_string(parser, parser_tokval(parser), true);
1820 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1822 if (!parser_next(parser) || parser->tok != ')') {
1823 parseerror(parser, "expected closing paren after translatable string");
1828 else if (parser->tok == TOKEN_DOTS)
1831 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1832 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1835 va = parse_vararg(parser);
1838 vec_push(sy->out, syexp(parser_ctx(parser), va));
1841 else if (parser->tok == TOKEN_FLOATCONST) {
1843 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1846 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1849 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1851 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1854 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1857 else if (parser->tok == TOKEN_STRINGCONST) {
1859 val = parser_const_string(parser, parser_tokval(parser), false);
1862 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1865 else if (parser->tok == TOKEN_VECTORCONST) {
1867 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1870 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1873 else if (parser->tok == TOKEN_IDENT)
1875 const char *ctoken = parser_tokval(parser);
1876 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1877 ast_expression *var;
1878 /* a_vector.{x,y,z} */
1879 if (!vec_size(sy->ops) ||
1880 !vec_last(sy->ops).etype ||
1881 operators[vec_last(sy->ops).etype-1].id != opid1('.') ||
1882 (prev >= intrinsic_debug_typestring &&
1883 prev <= intrinsic_debug_typestring))
1885 /* When adding more intrinsics, fix the above condition */
1888 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1890 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1892 var = parser_find_var(parser, parser_tokval(parser));
1894 var = parser_find_field(parser, parser_tokval(parser));
1896 if (!var && with_labels) {
1897 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1899 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1900 var = (ast_expression*)lbl;
1901 vec_push(parser->labels, lbl);
1904 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
1905 var = (ast_expression*)parser_const_string(parser, parser->function->name, false);
1908 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1909 var = (ast_expression*)intrinsic_debug_typestring;
1911 /* now we try for the real intrinsic hashtable. If the string
1912 * begins with __builtin, we simply skip past it, otherwise we
1913 * use the identifier as is.
1915 else if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
1916 var = intrin_func(parser, parser_tokval(parser) + 10 /* skip __builtin */);
1920 char *correct = NULL;
1924 * sometimes people use preprocessing predefs without enabling them
1925 * i've done this thousands of times already myself. Lets check for
1926 * it in the predef table. And diagnose it better :)
1928 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
1929 parseerror(parser, "unexpected ident: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1934 * TODO: determine the best score for the identifier: be it
1935 * a variable, a field.
1937 * We should also consider adding correction tables for
1938 * other things as well.
1940 if (OPTS_OPTION_BOOL(OPTION_CORRECTION)) {
1942 correct_init(&corr);
1944 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1945 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1946 if (strcmp(correct, parser_tokval(parser))) {
1948 } else if (correct) {
1953 correct_free(&corr);
1956 parseerror(parser, "unexpected ident: %s (did you mean %s?)", parser_tokval(parser), correct);
1961 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1967 if (ast_istype(var, ast_value)) {
1968 ((ast_value*)var)->uses++;
1970 else if (ast_istype(var, ast_member)) {
1971 ast_member *mem = (ast_member*)var;
1972 if (ast_istype(mem->owner, ast_value))
1973 ((ast_value*)(mem->owner))->uses++;
1976 vec_push(sy->out, syexp(parser_ctx(parser), var));
1979 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1983 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1985 ast_expression *expr = NULL;
1988 bool wantop = false;
1989 /* only warn once about an assignment in a truth value because the current code
1990 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1992 bool warn_truthvalue = true;
1994 /* count the parens because an if starts with one, so the
1995 * end of a condition is an unmatched closing paren
1999 memset(&sy, 0, sizeof(sy));
2001 parser->lex->flags.noops = false;
2003 parser_reclassify_token(parser);
2007 if (parser->tok == TOKEN_TYPENAME) {
2008 parseerror(parser, "unexpected typename");
2012 if (parser->tok == TOKEN_OPERATOR)
2014 /* classify the operator */
2015 const oper_info *op;
2016 const oper_info *olast = NULL;
2018 for (o = 0; o < operator_count; ++o) {
2019 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
2020 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
2021 !strcmp(parser_tokval(parser), operators[o].op))
2026 if (o == operator_count) {
2027 compile_error(parser_ctx(parser), "unknown operator: %s", parser_tokval(parser));
2030 /* found an operator */
2033 /* when declaring variables, a comma starts a new variable */
2034 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
2035 /* fixup the token */
2040 /* a colon without a pervious question mark cannot be a ternary */
2041 if (!ternaries && op->id == opid2(':','?')) {
2046 if (op->id == opid1(',')) {
2047 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2048 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
2052 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2053 olast = &operators[vec_last(sy.ops).etype-1];
2055 #define IsAssignOp(x) (\
2056 (x) == opid1('=') || \
2057 (x) == opid2('+','=') || \
2058 (x) == opid2('-','=') || \
2059 (x) == opid2('*','=') || \
2060 (x) == opid2('/','=') || \
2061 (x) == opid2('%','=') || \
2062 (x) == opid2('&','=') || \
2063 (x) == opid2('|','=') || \
2064 (x) == opid3('&','~','=') \
2066 if (warn_truthvalue) {
2067 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
2068 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
2069 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
2072 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
2073 warn_truthvalue = false;
2078 (op->prec < olast->prec) ||
2079 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
2081 if (!parser_sy_apply_operator(parser, &sy))
2083 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2084 olast = &operators[vec_last(sy.ops).etype-1];
2089 if (op->id == opid1('(')) {
2091 size_t sycount = vec_size(sy.out);
2092 /* we expected an operator, this is the function-call operator */
2093 vec_push(sy.paren, PAREN_FUNC);
2094 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
2095 vec_push(sy.argc, 0);
2097 vec_push(sy.paren, PAREN_EXPR);
2098 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2101 } else if (op->id == opid1('[')) {
2103 parseerror(parser, "unexpected array subscript");
2106 vec_push(sy.paren, PAREN_INDEX);
2107 /* push both the operator and the paren, this makes life easier */
2108 vec_push(sy.ops, syop(parser_ctx(parser), op));
2109 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2111 } else if (op->id == opid2('?',':')) {
2112 vec_push(sy.ops, syop(parser_ctx(parser), op));
2113 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2116 vec_push(sy.paren, PAREN_TERNARY1);
2117 } else if (op->id == opid2(':','?')) {
2118 if (!vec_size(sy.paren)) {
2119 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2122 if (vec_last(sy.paren) != PAREN_TERNARY1) {
2123 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2126 if (!parser_close_paren(parser, &sy))
2128 vec_push(sy.ops, syop(parser_ctx(parser), op));
2132 vec_push(sy.ops, syop(parser_ctx(parser), op));
2133 wantop = !!(op->flags & OP_SUFFIX);
2136 else if (parser->tok == ')') {
2137 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2138 if (!parser_sy_apply_operator(parser, &sy))
2141 if (!vec_size(sy.paren))
2144 if (vec_last(sy.paren) == PAREN_TERNARY1) {
2145 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
2148 if (!parser_close_paren(parser, &sy))
2151 /* must be a function call without parameters */
2152 if (vec_last(sy.paren) != PAREN_FUNC) {
2153 parseerror(parser, "closing paren in invalid position");
2156 if (!parser_close_paren(parser, &sy))
2161 else if (parser->tok == '(') {
2162 parseerror(parser, "internal error: '(' should be classified as operator");
2165 else if (parser->tok == '[') {
2166 parseerror(parser, "internal error: '[' should be classified as operator");
2169 else if (parser->tok == ']') {
2170 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2171 if (!parser_sy_apply_operator(parser, &sy))
2174 if (!vec_size(sy.paren))
2176 if (vec_last(sy.paren) != PAREN_INDEX) {
2177 parseerror(parser, "mismatched parentheses, unexpected ']'");
2180 if (!parser_close_paren(parser, &sy))
2185 if (!parse_sya_operand(parser, &sy, with_labels))
2188 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
2189 vec_last(sy.argc)++;
2194 /* in this case we might want to allow constant string concatenation */
2195 bool concatenated = false;
2196 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
2197 ast_expression *lexpr = vec_last(sy.out).out;
2198 if (ast_istype(lexpr, ast_value)) {
2199 ast_value *last = (ast_value*)lexpr;
2200 if (last->isimm == true && last->cvq == CV_CONST &&
2201 last->hasvalue && last->expression.vtype == TYPE_STRING)
2203 char *newstr = NULL;
2204 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
2205 vec_last(sy.out).out = (ast_expression*)parser_const_string(parser, newstr, false);
2207 concatenated = true;
2211 if (!concatenated) {
2212 parseerror(parser, "expected operator or end of statement");
2217 if (!parser_next(parser)) {
2220 if (parser->tok == ';' ||
2221 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
2222 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
2228 while (vec_size(sy.ops)) {
2229 if (!parser_sy_apply_operator(parser, &sy))
2233 parser->lex->flags.noops = true;
2234 if (vec_size(sy.out) != 1) {
2235 parseerror(parser, "expression with not 1 but %lu output values...", (unsigned long) vec_size(sy.out));
2238 expr = sy.out[0].out;
2241 if (vec_size(sy.paren)) {
2242 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
2250 parser->lex->flags.noops = true;
2251 for (i = 0; i < vec_size(sy.out); ++i) {
2253 ast_unref(sy.out[i].out);
2262 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
2264 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
2267 if (parser->tok != ';') {
2268 parseerror(parser, "semicolon expected after expression");
2272 if (!parser_next(parser)) {
2279 static void parser_enterblock(parser_t *parser)
2281 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2282 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2283 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2284 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2285 vec_push(parser->_block_ctx, parser_ctx(parser));
2288 vec_push(parser->correct_variables, correct_trie_new());
2289 vec_push(parser->correct_variables_score, NULL);
2292 static bool parser_leaveblock(parser_t *parser)
2295 size_t locals, typedefs;
2297 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2298 parseerror(parser, "internal error: parser_leaveblock with no block");
2302 util_htdel(vec_last(parser->variables));
2303 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2305 vec_pop(parser->variables);
2306 vec_pop(parser->correct_variables);
2307 vec_pop(parser->correct_variables_score);
2308 if (!vec_size(parser->_blocklocals)) {
2309 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2313 locals = vec_last(parser->_blocklocals);
2314 vec_pop(parser->_blocklocals);
2315 while (vec_size(parser->_locals) != locals) {
2316 ast_expression *e = vec_last(parser->_locals);
2317 ast_value *v = (ast_value*)e;
2318 vec_pop(parser->_locals);
2319 if (ast_istype(e, ast_value) && !v->uses) {
2320 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2325 typedefs = vec_last(parser->_blocktypedefs);
2326 while (vec_size(parser->_typedefs) != typedefs) {
2327 ast_delete(vec_last(parser->_typedefs));
2328 vec_pop(parser->_typedefs);
2330 util_htdel(vec_last(parser->typedefs));
2331 vec_pop(parser->typedefs);
2333 vec_pop(parser->_block_ctx);
2338 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2340 vec_push(parser->_locals, e);
2341 util_htset(vec_last(parser->variables), name, (void*)e);
2345 vec_last(parser->correct_variables),
2346 &vec_last(parser->correct_variables_score),
2351 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2353 vec_push(parser->globals, e);
2354 util_htset(parser->htglobals, name, e);
2358 parser->correct_variables[0],
2359 &parser->correct_variables_score[0],
2364 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2368 ast_expression *prev;
2370 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2372 ast_type_to_string(cond, ty, sizeof(ty));
2373 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2376 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2379 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2382 parseerror(parser, "internal error: failed to process condition");
2387 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2389 /* vector types need to be cast to true booleans */
2390 ast_binary *bin = (ast_binary*)cond;
2391 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2393 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2395 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2398 parseerror(parser, "internal error: failed to process condition");
2405 unary = (ast_unary*)cond;
2406 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2408 cond = unary->operand;
2409 unary->operand = NULL;
2412 unary = (ast_unary*)cond;
2416 parseerror(parser, "internal error: failed to process condition");
2418 if (ifnot) *_ifnot = !*_ifnot;
2422 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2425 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2428 lex_ctx ctx = parser_ctx(parser);
2430 (void)block; /* not touching */
2432 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2433 if (!parser_next(parser)) {
2434 parseerror(parser, "expected condition or 'not'");
2437 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2439 if (!parser_next(parser)) {
2440 parseerror(parser, "expected condition in parenthesis");
2444 if (parser->tok != '(') {
2445 parseerror(parser, "expected 'if' condition in parenthesis");
2448 /* parse into the expression */
2449 if (!parser_next(parser)) {
2450 parseerror(parser, "expected 'if' condition after opening paren");
2453 /* parse the condition */
2454 cond = parse_expression_leave(parser, false, true, false);
2458 if (parser->tok != ')') {
2459 parseerror(parser, "expected closing paren after 'if' condition");
2463 /* parse into the 'then' branch */
2464 if (!parser_next(parser)) {
2465 parseerror(parser, "expected statement for on-true branch of 'if'");
2469 if (!parse_statement_or_block(parser, &ontrue)) {
2474 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2475 /* check for an else */
2476 if (!strcmp(parser_tokval(parser), "else")) {
2477 /* parse into the 'else' branch */
2478 if (!parser_next(parser)) {
2479 parseerror(parser, "expected on-false branch after 'else'");
2484 if (!parse_statement_or_block(parser, &onfalse)) {
2491 cond = process_condition(parser, cond, &ifnot);
2493 if (ontrue) ast_delete(ontrue);
2494 if (onfalse) ast_delete(onfalse);
2499 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2501 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2502 *out = (ast_expression*)ifthen;
2506 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2507 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2512 /* skip the 'while' and get the body */
2513 if (!parser_next(parser)) {
2514 if (OPTS_FLAG(LOOP_LABELS))
2515 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2517 parseerror(parser, "expected 'while' condition in parenthesis");
2521 if (parser->tok == ':') {
2522 if (!OPTS_FLAG(LOOP_LABELS))
2523 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2524 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2525 parseerror(parser, "expected loop label");
2528 label = util_strdup(parser_tokval(parser));
2529 if (!parser_next(parser)) {
2531 parseerror(parser, "expected 'while' condition in parenthesis");
2536 if (parser->tok != '(') {
2537 parseerror(parser, "expected 'while' condition in parenthesis");
2541 vec_push(parser->breaks, label);
2542 vec_push(parser->continues, label);
2544 rv = parse_while_go(parser, block, out);
2547 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2548 parseerror(parser, "internal error: label stack corrupted");
2554 vec_pop(parser->breaks);
2555 vec_pop(parser->continues);
2560 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2563 ast_expression *cond, *ontrue;
2567 lex_ctx ctx = parser_ctx(parser);
2569 (void)block; /* not touching */
2571 /* parse into the expression */
2572 if (!parser_next(parser)) {
2573 parseerror(parser, "expected 'while' condition after opening paren");
2576 /* parse the condition */
2577 cond = parse_expression_leave(parser, false, true, false);
2581 if (parser->tok != ')') {
2582 parseerror(parser, "expected closing paren after 'while' condition");
2586 /* parse into the 'then' branch */
2587 if (!parser_next(parser)) {
2588 parseerror(parser, "expected while-loop body");
2592 if (!parse_statement_or_block(parser, &ontrue)) {
2597 cond = process_condition(parser, cond, &ifnot);
2602 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2603 *out = (ast_expression*)aloop;
2607 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2608 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2613 /* skip the 'do' and get the body */
2614 if (!parser_next(parser)) {
2615 if (OPTS_FLAG(LOOP_LABELS))
2616 parseerror(parser, "expected loop label or body");
2618 parseerror(parser, "expected loop body");
2622 if (parser->tok == ':') {
2623 if (!OPTS_FLAG(LOOP_LABELS))
2624 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2625 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2626 parseerror(parser, "expected loop label");
2629 label = util_strdup(parser_tokval(parser));
2630 if (!parser_next(parser)) {
2632 parseerror(parser, "expected loop body");
2637 vec_push(parser->breaks, label);
2638 vec_push(parser->continues, label);
2640 rv = parse_dowhile_go(parser, block, out);
2643 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2644 parseerror(parser, "internal error: label stack corrupted");
2650 vec_pop(parser->breaks);
2651 vec_pop(parser->continues);
2656 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2659 ast_expression *cond, *ontrue;
2663 lex_ctx ctx = parser_ctx(parser);
2665 (void)block; /* not touching */
2667 if (!parse_statement_or_block(parser, &ontrue))
2670 /* expect the "while" */
2671 if (parser->tok != TOKEN_KEYWORD ||
2672 strcmp(parser_tokval(parser), "while"))
2674 parseerror(parser, "expected 'while' and condition");
2679 /* skip the 'while' and check for opening paren */
2680 if (!parser_next(parser) || parser->tok != '(') {
2681 parseerror(parser, "expected 'while' condition in parenthesis");
2685 /* parse into the expression */
2686 if (!parser_next(parser)) {
2687 parseerror(parser, "expected 'while' condition after opening paren");
2691 /* parse the condition */
2692 cond = parse_expression_leave(parser, false, true, false);
2696 if (parser->tok != ')') {
2697 parseerror(parser, "expected closing paren after 'while' condition");
2703 if (!parser_next(parser) || parser->tok != ';') {
2704 parseerror(parser, "expected semicolon after condition");
2710 if (!parser_next(parser)) {
2711 parseerror(parser, "parse error");
2717 cond = process_condition(parser, cond, &ifnot);
2722 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2723 *out = (ast_expression*)aloop;
2727 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2728 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2733 /* skip the 'for' and check for opening paren */
2734 if (!parser_next(parser)) {
2735 if (OPTS_FLAG(LOOP_LABELS))
2736 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2738 parseerror(parser, "expected 'for' expressions in parenthesis");
2742 if (parser->tok == ':') {
2743 if (!OPTS_FLAG(LOOP_LABELS))
2744 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2745 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2746 parseerror(parser, "expected loop label");
2749 label = util_strdup(parser_tokval(parser));
2750 if (!parser_next(parser)) {
2752 parseerror(parser, "expected 'for' expressions in parenthesis");
2757 if (parser->tok != '(') {
2758 parseerror(parser, "expected 'for' expressions in parenthesis");
2762 vec_push(parser->breaks, label);
2763 vec_push(parser->continues, label);
2765 rv = parse_for_go(parser, block, out);
2768 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2769 parseerror(parser, "internal error: label stack corrupted");
2775 vec_pop(parser->breaks);
2776 vec_pop(parser->continues);
2780 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2783 ast_expression *initexpr, *cond, *increment, *ontrue;
2788 lex_ctx ctx = parser_ctx(parser);
2790 parser_enterblock(parser);
2797 /* parse into the expression */
2798 if (!parser_next(parser)) {
2799 parseerror(parser, "expected 'for' initializer after opening paren");
2804 if (parser->tok == TOKEN_IDENT)
2805 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2807 if (typevar || parser->tok == TOKEN_TYPENAME) {
2809 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2810 if (parsewarning(parser, WARN_EXTENSIONS,
2811 "current standard does not allow variable declarations in for-loop initializers"))
2815 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2818 else if (parser->tok != ';')
2820 initexpr = parse_expression_leave(parser, false, false, false);
2825 /* move on to condition */
2826 if (parser->tok != ';') {
2827 parseerror(parser, "expected semicolon after for-loop initializer");
2830 if (!parser_next(parser)) {
2831 parseerror(parser, "expected for-loop condition");
2835 /* parse the condition */
2836 if (parser->tok != ';') {
2837 cond = parse_expression_leave(parser, false, true, false);
2842 /* move on to incrementor */
2843 if (parser->tok != ';') {
2844 parseerror(parser, "expected semicolon after for-loop initializer");
2847 if (!parser_next(parser)) {
2848 parseerror(parser, "expected for-loop condition");
2852 /* parse the incrementor */
2853 if (parser->tok != ')') {
2854 lex_ctx condctx = parser_ctx(parser);
2855 increment = parse_expression_leave(parser, false, false, false);
2858 if (!ast_side_effects(increment)) {
2859 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2865 if (parser->tok != ')') {
2866 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2869 /* parse into the 'then' branch */
2870 if (!parser_next(parser)) {
2871 parseerror(parser, "expected for-loop body");
2874 if (!parse_statement_or_block(parser, &ontrue))
2878 cond = process_condition(parser, cond, &ifnot);
2882 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2883 *out = (ast_expression*)aloop;
2885 if (!parser_leaveblock(parser)) {
2891 if (initexpr) ast_unref(initexpr);
2892 if (cond) ast_unref(cond);
2893 if (increment) ast_unref(increment);
2894 (void)!parser_leaveblock(parser);
2898 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2900 ast_expression *exp = NULL;
2901 ast_expression *var = NULL;
2902 ast_return *ret = NULL;
2903 ast_value *retval = parser->function->return_value;
2904 ast_value *expected = parser->function->vtype;
2906 lex_ctx ctx = parser_ctx(parser);
2908 (void)block; /* not touching */
2910 if (!parser_next(parser)) {
2911 parseerror(parser, "expected return expression");
2915 /* return assignments */
2916 if (parser->tok == '=') {
2917 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
2918 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
2922 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
2924 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
2925 parseerror(parser, "invalid return type: `%s'", ty1);
2929 if (!parser_next(parser)) {
2930 parseerror(parser, "expected return assignment expression");
2934 if (!(exp = parse_expression_leave(parser, false, false, false)))
2937 /* prepare the return value */
2939 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
2940 ast_type_adopt(retval, expected->expression.next);
2941 parser->function->return_value = retval;
2944 if (!ast_compare_type(exp, (ast_expression*)retval)) {
2945 char ty1[1024], ty2[1024];
2946 ast_type_to_string(exp, ty1, sizeof(ty1));
2947 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
2948 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
2951 /* store to 'return' local variable */
2952 var = (ast_expression*)ast_store_new(
2954 type_store_instr[expected->expression.next->vtype],
2955 (ast_expression*)retval, exp);
2962 if (parser->tok != ';')
2963 parseerror(parser, "missing semicolon after return assignment");
2964 else if (!parser_next(parser))
2965 parseerror(parser, "parse error after return assignment");
2971 if (parser->tok != ';') {
2972 exp = parse_expression(parser, false, false);
2976 if (exp->vtype != TYPE_NIL &&
2977 exp->vtype != ((ast_expression*)expected)->next->vtype)
2979 parseerror(parser, "return with invalid expression");
2982 ret = ast_return_new(ctx, exp);
2988 if (!parser_next(parser))
2989 parseerror(parser, "parse error");
2991 if (!retval && expected->expression.next->vtype != TYPE_VOID)
2993 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2995 ret = ast_return_new(ctx, (ast_expression*)retval);
2997 *out = (ast_expression*)ret;
3001 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
3004 unsigned int levels = 0;
3005 lex_ctx ctx = parser_ctx(parser);
3006 const char **loops = (is_continue ? parser->continues : parser->breaks);
3008 (void)block; /* not touching */
3009 if (!parser_next(parser)) {
3010 parseerror(parser, "expected semicolon or loop label");
3014 if (!vec_size(loops)) {
3016 parseerror(parser, "`continue` can only be used inside loops");
3018 parseerror(parser, "`break` can only be used inside loops or switches");
3021 if (parser->tok == TOKEN_IDENT) {
3022 if (!OPTS_FLAG(LOOP_LABELS))
3023 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3024 i = vec_size(loops);
3026 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
3029 parseerror(parser, "no such loop to %s: `%s`",
3030 (is_continue ? "continue" : "break out of"),
3031 parser_tokval(parser));
3036 if (!parser_next(parser)) {
3037 parseerror(parser, "expected semicolon");
3042 if (parser->tok != ';') {
3043 parseerror(parser, "expected semicolon");
3047 if (!parser_next(parser))
3048 parseerror(parser, "parse error");
3050 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
3054 /* returns true when it was a variable qualifier, false otherwise!
3055 * on error, cvq is set to CV_WRONG
3057 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
3059 bool had_const = false;
3060 bool had_var = false;
3061 bool had_noref = false;
3062 bool had_attrib = false;
3063 bool had_static = false;
3068 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
3070 /* parse an attribute */
3071 if (!parser_next(parser)) {
3072 parseerror(parser, "expected attribute after `[[`");
3076 if (!strcmp(parser_tokval(parser), "noreturn")) {
3077 flags |= AST_FLAG_NORETURN;
3078 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3079 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
3084 else if (!strcmp(parser_tokval(parser), "noref")) {
3086 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3087 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
3092 else if (!strcmp(parser_tokval(parser), "inline")) {
3093 flags |= AST_FLAG_INLINE;
3094 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3095 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
3100 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
3101 flags |= AST_FLAG_ALIAS;
3104 if (!parser_next(parser)) {
3105 parseerror(parser, "parse error in attribute");
3109 if (parser->tok == '(') {
3110 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
3111 parseerror(parser, "`alias` attribute missing parameter");
3115 *message = util_strdup(parser_tokval(parser));
3117 if (!parser_next(parser)) {
3118 parseerror(parser, "parse error in attribute");
3122 if (parser->tok != ')') {
3123 parseerror(parser, "`alias` attribute expected `)` after parameter");
3127 if (!parser_next(parser)) {
3128 parseerror(parser, "parse error in attribute");
3133 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3134 parseerror(parser, "`alias` attribute expected `]]`");
3138 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
3139 flags |= AST_FLAG_DEPRECATED;
3142 if (!parser_next(parser)) {
3143 parseerror(parser, "parse error in attribute");
3147 if (parser->tok == '(') {
3148 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
3149 parseerror(parser, "`deprecated` attribute missing parameter");
3153 *message = util_strdup(parser_tokval(parser));
3155 if (!parser_next(parser)) {
3156 parseerror(parser, "parse error in attribute");
3160 if(parser->tok != ')') {
3161 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
3165 if (!parser_next(parser)) {
3166 parseerror(parser, "parse error in attribute");
3171 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3172 parseerror(parser, "`deprecated` attribute expected `]]`");
3175 if (*message) mem_d(*message);
3183 /* Skip tokens until we hit a ]] */
3184 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
3185 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3186 if (!parser_next(parser)) {
3187 parseerror(parser, "error inside attribute");
3194 else if (with_local && !strcmp(parser_tokval(parser), "static"))
3196 else if (!strcmp(parser_tokval(parser), "const"))
3198 else if (!strcmp(parser_tokval(parser), "var"))
3200 else if (with_local && !strcmp(parser_tokval(parser), "local"))
3202 else if (!strcmp(parser_tokval(parser), "noref"))
3204 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
3209 if (!parser_next(parser))
3219 *is_static = had_static;
3223 parseerror(parser, "parse error after variable qualifier");
3228 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
3229 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
3234 /* skip the 'while' and get the body */
3235 if (!parser_next(parser)) {
3236 if (OPTS_FLAG(LOOP_LABELS))
3237 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
3239 parseerror(parser, "expected 'switch' operand in parenthesis");
3243 if (parser->tok == ':') {
3244 if (!OPTS_FLAG(LOOP_LABELS))
3245 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3246 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3247 parseerror(parser, "expected loop label");
3250 label = util_strdup(parser_tokval(parser));
3251 if (!parser_next(parser)) {
3253 parseerror(parser, "expected 'switch' operand in parenthesis");
3258 if (parser->tok != '(') {
3259 parseerror(parser, "expected 'switch' operand in parenthesis");
3263 vec_push(parser->breaks, label);
3265 rv = parse_switch_go(parser, block, out);
3268 if (vec_last(parser->breaks) != label) {
3269 parseerror(parser, "internal error: label stack corrupted");
3275 vec_pop(parser->breaks);
3280 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3282 ast_expression *operand;
3285 ast_switch *switchnode;
3286 ast_switch_case swcase;
3289 bool noref, is_static;
3290 uint32_t qflags = 0;
3292 lex_ctx ctx = parser_ctx(parser);
3294 (void)block; /* not touching */
3297 /* parse into the expression */
3298 if (!parser_next(parser)) {
3299 parseerror(parser, "expected switch operand");
3302 /* parse the operand */
3303 operand = parse_expression_leave(parser, false, false, false);
3307 switchnode = ast_switch_new(ctx, operand);
3310 if (parser->tok != ')') {
3311 ast_delete(switchnode);
3312 parseerror(parser, "expected closing paren after 'switch' operand");
3316 /* parse over the opening paren */
3317 if (!parser_next(parser) || parser->tok != '{') {
3318 ast_delete(switchnode);
3319 parseerror(parser, "expected list of cases");
3323 if (!parser_next(parser)) {
3324 ast_delete(switchnode);
3325 parseerror(parser, "expected 'case' or 'default'");
3329 /* new block; allow some variables to be declared here */
3330 parser_enterblock(parser);
3333 if (parser->tok == TOKEN_IDENT)
3334 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3335 if (typevar || parser->tok == TOKEN_TYPENAME) {
3336 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3337 ast_delete(switchnode);
3342 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3344 if (cvq == CV_WRONG) {
3345 ast_delete(switchnode);
3348 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3349 ast_delete(switchnode);
3358 while (parser->tok != '}') {
3359 ast_block *caseblock;
3361 if (!strcmp(parser_tokval(parser), "case")) {
3362 if (!parser_next(parser)) {
3363 ast_delete(switchnode);
3364 parseerror(parser, "expected expression for case");
3367 swcase.value = parse_expression_leave(parser, false, false, false);
3368 if (!swcase.value) {
3369 ast_delete(switchnode);
3370 parseerror(parser, "expected expression for case");
3373 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3374 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3375 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3381 else if (!strcmp(parser_tokval(parser), "default")) {
3382 swcase.value = NULL;
3383 if (!parser_next(parser)) {
3384 ast_delete(switchnode);
3385 parseerror(parser, "expected colon");
3390 ast_delete(switchnode);
3391 parseerror(parser, "expected 'case' or 'default'");
3395 /* Now the colon and body */
3396 if (parser->tok != ':') {
3397 if (swcase.value) ast_unref(swcase.value);
3398 ast_delete(switchnode);
3399 parseerror(parser, "expected colon");
3403 if (!parser_next(parser)) {
3404 if (swcase.value) ast_unref(swcase.value);
3405 ast_delete(switchnode);
3406 parseerror(parser, "expected statements or case");
3409 caseblock = ast_block_new(parser_ctx(parser));
3411 if (swcase.value) ast_unref(swcase.value);
3412 ast_delete(switchnode);
3415 swcase.code = (ast_expression*)caseblock;
3416 vec_push(switchnode->cases, swcase);
3418 ast_expression *expr;
3419 if (parser->tok == '}')
3421 if (parser->tok == TOKEN_KEYWORD) {
3422 if (!strcmp(parser_tokval(parser), "case") ||
3423 !strcmp(parser_tokval(parser), "default"))
3428 if (!parse_statement(parser, caseblock, &expr, true)) {
3429 ast_delete(switchnode);
3434 if (!ast_block_add_expr(caseblock, expr)) {
3435 ast_delete(switchnode);
3441 parser_leaveblock(parser);
3444 if (parser->tok != '}') {
3445 ast_delete(switchnode);
3446 parseerror(parser, "expected closing paren of case list");
3449 if (!parser_next(parser)) {
3450 ast_delete(switchnode);
3451 parseerror(parser, "parse error after switch");
3454 *out = (ast_expression*)switchnode;
3458 /* parse computed goto sides */
3459 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3460 ast_expression *on_true;
3461 ast_expression *on_false;
3462 ast_expression *cond;
3467 if (ast_istype(*side, ast_ternary)) {
3468 ast_ternary *tern = (ast_ternary*)*side;
3469 on_true = parse_goto_computed(parser, &tern->on_true);
3470 on_false = parse_goto_computed(parser, &tern->on_false);
3472 if (!on_true || !on_false) {
3473 parseerror(parser, "expected label or expression in ternary");
3474 if (on_true) ast_unref(on_true);
3475 if (on_false) ast_unref(on_false);
3483 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3484 } else if (ast_istype(*side, ast_label)) {
3485 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3486 ast_goto_set_label(gt, ((ast_label*)*side));
3488 return (ast_expression*)gt;
3493 static bool parse_goto(parser_t *parser, ast_expression **out)
3495 ast_goto *gt = NULL;
3496 ast_expression *lbl;
3498 if (!parser_next(parser))
3501 if (parser->tok != TOKEN_IDENT) {
3502 ast_expression *expression;
3504 /* could be an expression i.e computed goto :-) */
3505 if (parser->tok != '(') {
3506 parseerror(parser, "expected label name after `goto`");
3510 /* failed to parse expression for goto */
3511 if (!(expression = parse_expression(parser, false, true)) ||
3512 !(*out = parse_goto_computed(parser, &expression))) {
3513 parseerror(parser, "invalid goto expression");
3514 ast_unref(expression);
3521 /* not computed goto */
3522 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3523 lbl = parser_find_label(parser, gt->name);
3525 if (!ast_istype(lbl, ast_label)) {
3526 parseerror(parser, "internal error: label is not an ast_label");
3530 ast_goto_set_label(gt, (ast_label*)lbl);
3533 vec_push(parser->gotos, gt);
3535 if (!parser_next(parser) || parser->tok != ';') {
3536 parseerror(parser, "semicolon expected after goto label");
3539 if (!parser_next(parser)) {
3540 parseerror(parser, "parse error after goto");
3544 *out = (ast_expression*)gt;
3548 static bool parse_skipwhite(parser_t *parser)
3551 if (!parser_next(parser))
3553 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3554 return parser->tok < TOKEN_ERROR;
3557 static bool parse_eol(parser_t *parser)
3559 if (!parse_skipwhite(parser))
3561 return parser->tok == TOKEN_EOL;
3564 static bool parse_pragma_do(parser_t *parser)
3566 if (!parser_next(parser) ||
3567 parser->tok != TOKEN_IDENT ||
3568 strcmp(parser_tokval(parser), "pragma"))
3570 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3573 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3574 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3578 if (!strcmp(parser_tokval(parser), "noref")) {
3579 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3580 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3583 parser->noref = !!parser_token(parser)->constval.i;
3584 if (!parse_eol(parser)) {
3585 parseerror(parser, "parse error after `noref` pragma");
3591 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3598 static bool parse_pragma(parser_t *parser)
3601 parser->lex->flags.preprocessing = true;
3602 parser->lex->flags.mergelines = true;
3603 rv = parse_pragma_do(parser);
3604 if (parser->tok != TOKEN_EOL) {
3605 parseerror(parser, "junk after pragma");
3608 parser->lex->flags.preprocessing = false;
3609 parser->lex->flags.mergelines = false;
3610 if (!parser_next(parser)) {
3611 parseerror(parser, "parse error after pragma");
3617 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3619 bool noref, is_static;
3621 uint32_t qflags = 0;
3622 ast_value *typevar = NULL;
3623 char *vstring = NULL;
3627 if (parser->tok == TOKEN_IDENT)
3628 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3630 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3632 /* local variable */
3634 parseerror(parser, "cannot declare a variable from here");
3637 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3638 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3641 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3645 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3647 if (cvq == CV_WRONG)
3649 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3651 else if (parser->tok == TOKEN_KEYWORD)
3653 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3658 if (!parser_next(parser)) {
3659 parseerror(parser, "parse error after __builtin_debug_printtype");
3663 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3665 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3666 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3667 if (!parser_next(parser)) {
3668 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3674 if (!parse_statement(parser, block, out, allow_cases))
3677 con_out("__builtin_debug_printtype: got no output node\n");
3680 ast_type_to_string(*out, ty, sizeof(ty));
3681 con_out("__builtin_debug_printtype: `%s`\n", ty);
3686 else if (!strcmp(parser_tokval(parser), "return"))
3688 return parse_return(parser, block, out);
3690 else if (!strcmp(parser_tokval(parser), "if"))
3692 return parse_if(parser, block, out);
3694 else if (!strcmp(parser_tokval(parser), "while"))
3696 return parse_while(parser, block, out);
3698 else if (!strcmp(parser_tokval(parser), "do"))
3700 return parse_dowhile(parser, block, out);
3702 else if (!strcmp(parser_tokval(parser), "for"))
3704 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3705 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3708 return parse_for(parser, block, out);
3710 else if (!strcmp(parser_tokval(parser), "break"))
3712 return parse_break_continue(parser, block, out, false);
3714 else if (!strcmp(parser_tokval(parser), "continue"))
3716 return parse_break_continue(parser, block, out, true);
3718 else if (!strcmp(parser_tokval(parser), "switch"))
3720 return parse_switch(parser, block, out);
3722 else if (!strcmp(parser_tokval(parser), "case") ||
3723 !strcmp(parser_tokval(parser), "default"))
3726 parseerror(parser, "unexpected 'case' label");
3731 else if (!strcmp(parser_tokval(parser), "goto"))
3733 return parse_goto(parser, out);
3735 else if (!strcmp(parser_tokval(parser), "typedef"))
3737 if (!parser_next(parser)) {
3738 parseerror(parser, "expected type definition after 'typedef'");
3741 return parse_typedef(parser);
3743 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3746 else if (parser->tok == '{')
3749 inner = parse_block(parser);
3752 *out = (ast_expression*)inner;
3755 else if (parser->tok == ':')
3759 if (!parser_next(parser)) {
3760 parseerror(parser, "expected label name");
3763 if (parser->tok != TOKEN_IDENT) {
3764 parseerror(parser, "label must be an identifier");
3767 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3769 if (!label->undefined) {
3770 parseerror(parser, "label `%s` already defined", label->name);
3773 label->undefined = false;
3776 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3777 vec_push(parser->labels, label);
3779 *out = (ast_expression*)label;
3780 if (!parser_next(parser)) {
3781 parseerror(parser, "parse error after label");
3784 for (i = 0; i < vec_size(parser->gotos); ++i) {
3785 if (!strcmp(parser->gotos[i]->name, label->name)) {
3786 ast_goto_set_label(parser->gotos[i], label);
3787 vec_remove(parser->gotos, i, 1);
3793 else if (parser->tok == ';')
3795 if (!parser_next(parser)) {
3796 parseerror(parser, "parse error after empty statement");
3803 lex_ctx ctx = parser_ctx(parser);
3804 ast_expression *exp = parse_expression(parser, false, false);
3808 if (!ast_side_effects(exp)) {
3809 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3816 static bool parse_enum(parser_t *parser)
3819 bool reverse = false;
3821 ast_value **values = NULL;
3822 ast_value *var = NULL;
3825 ast_expression *old;
3827 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3828 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3832 /* enumeration attributes (can add more later) */
3833 if (parser->tok == ':') {
3834 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3835 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3840 if (!strcmp(parser_tokval(parser), "flag")) {
3844 else if (!strcmp(parser_tokval(parser), "reverse")) {
3848 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3852 if (!parser_next(parser) || parser->tok != '{') {
3853 parseerror(parser, "expected `{` after enum attribute ");
3859 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3860 if (parser->tok == '}') {
3861 /* allow an empty enum */
3864 parseerror(parser, "expected identifier or `}`");
3868 old = parser_find_field(parser, parser_tokval(parser));
3870 old = parser_find_global(parser, parser_tokval(parser));
3872 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3873 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3877 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3878 vec_push(values, var);
3879 var->cvq = CV_CONST;
3880 var->hasvalue = true;
3882 /* for flagged enumerations increment in POTs of TWO */
3883 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3884 parser_addglobal(parser, var->name, (ast_expression*)var);
3886 if (!parser_next(parser)) {
3887 parseerror(parser, "expected `=`, `}` or comma after identifier");
3891 if (parser->tok == ',')
3893 if (parser->tok == '}')
3895 if (parser->tok != '=') {
3896 parseerror(parser, "expected `=`, `}` or comma after identifier");
3900 if (!parser_next(parser)) {
3901 parseerror(parser, "expected expression after `=`");
3905 /* We got a value! */
3906 old = parse_expression_leave(parser, true, false, false);
3907 asvalue = (ast_value*)old;
3908 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3909 compile_error(ast_ctx(var), "constant value or expression expected");
3912 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3914 if (parser->tok == '}')
3916 if (parser->tok != ',') {
3917 parseerror(parser, "expected `}` or comma after expression");
3922 /* patch them all (for reversed attribute) */
3925 for (i = 0; i < vec_size(values); i++)
3926 values[i]->constval.vfloat = vec_size(values) - i - 1;
3929 if (parser->tok != '}') {
3930 parseerror(parser, "internal error: breaking without `}`");
3934 if (!parser_next(parser) || parser->tok != ';') {
3935 parseerror(parser, "expected semicolon after enumeration");
3939 if (!parser_next(parser)) {
3940 parseerror(parser, "parse error after enumeration");
3952 static bool parse_block_into(parser_t *parser, ast_block *block)
3956 parser_enterblock(parser);
3958 if (!parser_next(parser)) { /* skip the '{' */
3959 parseerror(parser, "expected function body");
3963 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3965 ast_expression *expr = NULL;
3966 if (parser->tok == '}')
3969 if (!parse_statement(parser, block, &expr, false)) {
3970 /* parseerror(parser, "parse error"); */
3976 if (!ast_block_add_expr(block, expr)) {
3983 if (parser->tok != '}') {
3986 (void)parser_next(parser);
3990 if (!parser_leaveblock(parser))
3992 return retval && !!block;
3995 static ast_block* parse_block(parser_t *parser)
3998 block = ast_block_new(parser_ctx(parser));
4001 if (!parse_block_into(parser, block)) {
4002 ast_block_delete(block);
4008 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
4010 if (parser->tok == '{') {
4011 *out = (ast_expression*)parse_block(parser);
4014 return parse_statement(parser, NULL, out, false);
4017 static bool create_vector_members(ast_value *var, ast_member **me)
4020 size_t len = strlen(var->name);
4022 for (i = 0; i < 3; ++i) {
4023 char *name = (char*)mem_a(len+3);
4024 memcpy(name, var->name, len);
4026 name[len+1] = 'x'+i;
4028 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
4037 do { ast_member_delete(me[--i]); } while(i);
4041 static bool parse_function_body(parser_t *parser, ast_value *var)
4043 ast_block *block = NULL;
4048 ast_expression *framenum = NULL;
4049 ast_expression *nextthink = NULL;
4050 /* None of the following have to be deleted */
4051 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
4052 ast_expression *gbl_time = NULL, *gbl_self = NULL;
4053 bool has_frame_think;
4057 has_frame_think = false;
4058 old = parser->function;
4060 if (var->expression.flags & AST_FLAG_ALIAS) {
4061 parseerror(parser, "function aliases cannot have bodies");
4065 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
4066 parseerror(parser, "gotos/labels leaking");
4070 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4071 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
4072 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
4078 if (parser->tok == '[') {
4079 /* got a frame definition: [ framenum, nextthink ]
4080 * this translates to:
4081 * self.frame = framenum;
4082 * self.nextthink = time + 0.1;
4083 * self.think = nextthink;
4087 fld_think = parser_find_field(parser, "think");
4088 fld_nextthink = parser_find_field(parser, "nextthink");
4089 fld_frame = parser_find_field(parser, "frame");
4090 if (!fld_think || !fld_nextthink || !fld_frame) {
4091 parseerror(parser, "cannot use [frame,think] notation without the required fields");
4092 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
4095 gbl_time = parser_find_global(parser, "time");
4096 gbl_self = parser_find_global(parser, "self");
4097 if (!gbl_time || !gbl_self) {
4098 parseerror(parser, "cannot use [frame,think] notation without the required globals");
4099 parseerror(parser, "please declare the following globals: `time`, `self`");
4103 if (!parser_next(parser))
4106 framenum = parse_expression_leave(parser, true, false, false);
4108 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
4111 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
4112 ast_unref(framenum);
4113 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
4117 if (parser->tok != ',') {
4118 ast_unref(framenum);
4119 parseerror(parser, "expected comma after frame number in [frame,think] notation");
4120 parseerror(parser, "Got a %i\n", parser->tok);
4124 if (!parser_next(parser)) {
4125 ast_unref(framenum);
4129 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
4131 /* qc allows the use of not-yet-declared functions here
4132 * - this automatically creates a prototype */
4133 ast_value *thinkfunc;
4134 ast_expression *functype = fld_think->next;
4136 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
4137 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
4138 ast_unref(framenum);
4139 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
4142 ast_type_adopt(thinkfunc, functype);
4144 if (!parser_next(parser)) {
4145 ast_unref(framenum);
4146 ast_delete(thinkfunc);
4150 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
4152 nextthink = (ast_expression*)thinkfunc;
4155 nextthink = parse_expression_leave(parser, true, false, false);
4157 ast_unref(framenum);
4158 parseerror(parser, "expected a think-function in [frame,think] notation");
4163 if (!ast_istype(nextthink, ast_value)) {
4164 parseerror(parser, "think-function in [frame,think] notation must be a constant");
4168 if (retval && parser->tok != ']') {
4169 parseerror(parser, "expected closing `]` for [frame,think] notation");
4173 if (retval && !parser_next(parser)) {
4177 if (retval && parser->tok != '{') {
4178 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
4183 ast_unref(nextthink);
4184 ast_unref(framenum);
4188 has_frame_think = true;
4191 block = ast_block_new(parser_ctx(parser));
4193 parseerror(parser, "failed to allocate block");
4194 if (has_frame_think) {
4195 ast_unref(nextthink);
4196 ast_unref(framenum);
4201 if (has_frame_think) {
4203 ast_expression *self_frame;
4204 ast_expression *self_nextthink;
4205 ast_expression *self_think;
4206 ast_expression *time_plus_1;
4207 ast_store *store_frame;
4208 ast_store *store_nextthink;
4209 ast_store *store_think;
4211 ctx = parser_ctx(parser);
4212 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
4213 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
4214 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
4216 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
4217 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
4219 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
4220 if (self_frame) ast_delete(self_frame);
4221 if (self_nextthink) ast_delete(self_nextthink);
4222 if (self_think) ast_delete(self_think);
4223 if (time_plus_1) ast_delete(time_plus_1);
4229 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
4230 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
4231 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
4234 ast_delete(self_frame);
4237 if (!store_nextthink) {
4238 ast_delete(self_nextthink);
4242 ast_delete(self_think);
4246 if (store_frame) ast_delete(store_frame);
4247 if (store_nextthink) ast_delete(store_nextthink);
4248 if (store_think) ast_delete(store_think);
4251 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
4252 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
4253 !ast_block_add_expr(block, (ast_expression*)store_think))
4260 parseerror(parser, "failed to generate code for [frame,think]");
4261 ast_unref(nextthink);
4262 ast_unref(framenum);
4268 if (var->hasvalue) {
4269 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
4270 ast_block_delete(block);
4274 func = ast_function_new(ast_ctx(var), var->name, var);
4276 parseerror(parser, "failed to allocate function for `%s`", var->name);
4277 ast_block_delete(block);
4280 vec_push(parser->functions, func);
4282 parser_enterblock(parser);
4284 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
4286 ast_value *param = var->expression.params[parami];
4289 if (param->expression.vtype != TYPE_VECTOR &&
4290 (param->expression.vtype != TYPE_FIELD ||
4291 param->expression.next->vtype != TYPE_VECTOR))
4296 if (!create_vector_members(param, me)) {
4297 ast_block_delete(block);
4301 for (e = 0; e < 3; ++e) {
4302 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4303 ast_block_collect(block, (ast_expression*)me[e]);
4307 if (var->argcounter) {
4308 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4309 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4313 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4315 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4316 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4317 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4318 varargs->expression.count = 0;
4319 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4320 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4321 ast_delete(varargs);
4322 ast_block_delete(block);
4325 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4326 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4327 ast_delete(varargs);
4328 ast_block_delete(block);
4331 func->varargs = varargs;
4333 func->fixedparams = parser_const_float(parser, vec_size(var->expression.params));
4336 parser->function = func;
4337 if (!parse_block_into(parser, block)) {
4338 ast_block_delete(block);
4342 vec_push(func->blocks, block);
4345 parser->function = old;
4346 if (!parser_leaveblock(parser))
4348 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4349 parseerror(parser, "internal error: local scopes left");
4353 if (parser->tok == ';')
4354 return parser_next(parser);
4355 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4356 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4360 (void)!parser_leaveblock(parser);
4361 vec_pop(parser->functions);
4362 ast_function_delete(func);
4363 var->constval.vfunc = NULL;
4366 parser->function = old;
4370 static ast_expression *array_accessor_split(
4375 ast_expression *left,
4376 ast_expression *right
4382 lex_ctx ctx = ast_ctx(array);
4384 if (!left || !right) {
4385 if (left) ast_delete(left);
4386 if (right) ast_delete(right);
4390 cmp = ast_binary_new(ctx, INSTR_LT,
4391 (ast_expression*)index,
4392 (ast_expression*)parser_const_float(parser, middle));
4396 parseerror(parser, "internal error: failed to create comparison for array setter");
4400 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4402 ast_delete(cmp); /* will delete left and right */
4403 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4407 return (ast_expression*)ifthen;
4410 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4412 lex_ctx ctx = ast_ctx(array);
4414 if (from+1 == afterend) {
4415 /* set this value */
4418 ast_array_index *subscript;
4420 int assignop = type_store_instr[value->expression.vtype];
4422 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4423 assignop = INSTR_STORE_V;
4425 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4429 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4431 ast_delete(subscript);
4435 block = ast_block_new(ctx);
4441 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4446 ret = ast_return_new(ctx, NULL);
4452 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4457 return (ast_expression*)block;
4459 ast_expression *left, *right;
4460 size_t diff = afterend - from;
4461 size_t middle = from + diff/2;
4462 left = array_setter_node(parser, array, index, value, from, middle);
4463 right = array_setter_node(parser, array, index, value, middle, afterend);
4464 return array_accessor_split(parser, array, index, middle, left, right);
4468 static ast_expression *array_field_setter_node(
4477 lex_ctx ctx = ast_ctx(array);
4479 if (from+1 == afterend) {
4480 /* set this value */
4483 ast_entfield *entfield;
4484 ast_array_index *subscript;
4486 int assignop = type_storep_instr[value->expression.vtype];
4488 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4489 assignop = INSTR_STOREP_V;
4491 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4495 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4496 subscript->expression.vtype = TYPE_FIELD;
4498 entfield = ast_entfield_new_force(ctx,
4499 (ast_expression*)entity,
4500 (ast_expression*)subscript,
4501 (ast_expression*)subscript);
4503 ast_delete(subscript);
4507 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4509 ast_delete(entfield);
4513 block = ast_block_new(ctx);
4519 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4524 ret = ast_return_new(ctx, NULL);
4530 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4535 return (ast_expression*)block;
4537 ast_expression *left, *right;
4538 size_t diff = afterend - from;
4539 size_t middle = from + diff/2;
4540 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4541 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4542 return array_accessor_split(parser, array, index, middle, left, right);
4546 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4548 lex_ctx ctx = ast_ctx(array);
4550 if (from+1 == afterend) {
4552 ast_array_index *subscript;
4554 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4558 ret = ast_return_new(ctx, (ast_expression*)subscript);
4560 ast_delete(subscript);
4564 return (ast_expression*)ret;
4566 ast_expression *left, *right;
4567 size_t diff = afterend - from;
4568 size_t middle = from + diff/2;
4569 left = array_getter_node(parser, array, index, from, middle);
4570 right = array_getter_node(parser, array, index, middle, afterend);
4571 return array_accessor_split(parser, array, index, middle, left, right);
4575 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4577 ast_function *func = NULL;
4578 ast_value *fval = NULL;
4579 ast_block *body = NULL;
4581 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4583 parseerror(parser, "failed to create accessor function value");
4587 func = ast_function_new(ast_ctx(array), funcname, fval);
4590 parseerror(parser, "failed to create accessor function node");
4594 body = ast_block_new(ast_ctx(array));
4596 parseerror(parser, "failed to create block for array accessor");
4602 vec_push(func->blocks, body);
4605 vec_push(parser->accessors, fval);
4610 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4612 ast_value *index = NULL;
4613 ast_value *value = NULL;
4617 if (!ast_istype(array->expression.next, ast_value)) {
4618 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4622 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4624 func = fval->constval.vfunc;
4625 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4627 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4628 value = ast_value_copy((ast_value*)array->expression.next);
4630 if (!index || !value) {
4631 parseerror(parser, "failed to create locals for array accessor");
4634 (void)!ast_value_set_name(value, "value"); /* not important */
4635 vec_push(fval->expression.params, index);
4636 vec_push(fval->expression.params, value);
4638 array->setter = fval;
4641 if (index) ast_delete(index);
4642 if (value) ast_delete(value);
4648 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4650 ast_expression *root = NULL;
4651 root = array_setter_node(parser, array,
4652 array->setter->expression.params[0],
4653 array->setter->expression.params[1],
4654 0, array->expression.count);
4656 parseerror(parser, "failed to build accessor search tree");
4659 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4666 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4668 if (!parser_create_array_setter_proto(parser, array, funcname))
4670 return parser_create_array_setter_impl(parser, array);
4673 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4675 ast_expression *root = NULL;
4676 ast_value *entity = NULL;
4677 ast_value *index = NULL;
4678 ast_value *value = NULL;
4682 if (!ast_istype(array->expression.next, ast_value)) {
4683 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4687 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4689 func = fval->constval.vfunc;
4690 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4692 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4693 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4694 value = ast_value_copy((ast_value*)array->expression.next);
4695 if (!entity || !index || !value) {
4696 parseerror(parser, "failed to create locals for array accessor");
4699 (void)!ast_value_set_name(value, "value"); /* not important */
4700 vec_push(fval->expression.params, entity);
4701 vec_push(fval->expression.params, index);
4702 vec_push(fval->expression.params, value);
4704 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4706 parseerror(parser, "failed to build accessor search tree");
4710 array->setter = fval;
4711 return ast_block_add_expr(func->blocks[0], root);
4713 if (entity) ast_delete(entity);
4714 if (index) ast_delete(index);
4715 if (value) ast_delete(value);
4716 if (root) ast_delete(root);
4722 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4724 ast_value *index = NULL;
4728 /* NOTE: checking array->expression.next rather than elemtype since
4729 * for fields elemtype is a temporary fieldtype.
4731 if (!ast_istype(array->expression.next, ast_value)) {
4732 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4736 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4738 func = fval->constval.vfunc;
4739 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4741 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4744 parseerror(parser, "failed to create locals for array accessor");
4747 vec_push(fval->expression.params, index);
4749 array->getter = fval;
4752 if (index) ast_delete(index);
4758 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4760 ast_expression *root = NULL;
4762 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4764 parseerror(parser, "failed to build accessor search tree");
4767 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4774 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4776 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4778 return parser_create_array_getter_impl(parser, array);
4781 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4782 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4790 bool variadic = false;
4791 ast_value *varparam = NULL;
4792 char *argcounter = NULL;
4794 ctx = parser_ctx(parser);
4796 /* for the sake of less code we parse-in in this function */
4797 if (!parser_next(parser)) {
4799 parseerror(parser, "expected parameter list");
4805 /* parse variables until we hit a closing paren */
4806 while (parser->tok != ')') {
4808 /* there must be commas between them */
4809 if (parser->tok != ',') {
4810 parseerror(parser, "expected comma or end of parameter list");
4813 if (!parser_next(parser)) {
4814 parseerror(parser, "expected parameter");
4820 if (parser->tok == TOKEN_DOTS) {
4821 /* '...' indicates a varargs function */
4823 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4824 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4827 if (parser->tok == TOKEN_IDENT) {
4828 argcounter = util_strdup(parser_tokval(parser));
4829 if (!parser_next(parser) || parser->tok != ')') {
4830 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4837 /* for anything else just parse a typename */
4838 param = parse_typename(parser, NULL, NULL);
4841 vec_push(params, param);
4842 if (param->expression.vtype >= TYPE_VARIANT) {
4843 char tname[1024]; /* typename is reserved in C++ */
4844 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4845 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4848 /* type-restricted varargs */
4849 if (parser->tok == TOKEN_DOTS) {
4851 varparam = vec_last(params);
4853 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4854 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4857 if (parser->tok == TOKEN_IDENT) {
4858 argcounter = util_strdup(parser_tokval(parser));
4859 if (!parser_next(parser) || parser->tok != ')') {
4860 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4868 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4872 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4873 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4876 if (!parser_next(parser)) {
4877 parseerror(parser, "parse error after typename");
4881 /* now turn 'var' into a function type */
4882 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4883 fval->expression.next = (ast_expression*)var;
4885 fval->expression.flags |= AST_FLAG_VARIADIC;
4888 var->expression.params = params;
4889 var->expression.varparam = (ast_expression*)varparam;
4890 var->argcounter = argcounter;
4899 ast_delete(varparam);
4901 for (i = 0; i < vec_size(params); ++i)
4902 ast_delete(params[i]);
4907 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4909 ast_expression *cexp;
4910 ast_value *cval, *tmp;
4913 ctx = parser_ctx(parser);
4915 if (!parser_next(parser)) {
4917 parseerror(parser, "expected array-size");
4921 cexp = parse_expression_leave(parser, true, false, false);
4923 if (!cexp || !ast_istype(cexp, ast_value)) {
4927 parseerror(parser, "expected array-size as constant positive integer");
4930 cval = (ast_value*)cexp;
4932 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4933 tmp->expression.next = (ast_expression*)var;
4936 if (cval->expression.vtype == TYPE_INTEGER)
4937 tmp->expression.count = cval->constval.vint;
4938 else if (cval->expression.vtype == TYPE_FLOAT)
4939 tmp->expression.count = cval->constval.vfloat;
4943 parseerror(parser, "array-size must be a positive integer constant");
4948 if (parser->tok != ']') {
4950 parseerror(parser, "expected ']' after array-size");
4953 if (!parser_next(parser)) {
4955 parseerror(parser, "error after parsing array size");
4961 /* Parse a complete typename.
4962 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4963 * but when parsing variables separated by comma
4964 * 'storebase' should point to where the base-type should be kept.
4965 * The base type makes up every bit of type information which comes *before* the
4968 * The following will be parsed in its entirety:
4970 * The 'basetype' in this case is 'void()'
4971 * and if there's a comma after it, say:
4973 * then the type-information 'void()' can be stored in 'storebase'
4975 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4977 ast_value *var, *tmp;
4980 const char *name = NULL;
4981 bool isfield = false;
4982 bool wasarray = false;
4983 size_t morefields = 0;
4985 ctx = parser_ctx(parser);
4987 /* types may start with a dot */
4988 if (parser->tok == '.') {
4990 /* if we parsed a dot we need a typename now */
4991 if (!parser_next(parser)) {
4992 parseerror(parser, "expected typename for field definition");
4996 /* Further dots are handled seperately because they won't be part of the
4999 while (parser->tok == '.') {
5001 if (!parser_next(parser)) {
5002 parseerror(parser, "expected typename for field definition");
5007 if (parser->tok == TOKEN_IDENT)
5008 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
5009 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
5010 parseerror(parser, "expected typename");
5014 /* generate the basic type value */
5015 if (cached_typedef) {
5016 var = ast_value_copy(cached_typedef);
5017 ast_value_set_name(var, "<type(from_def)>");
5019 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
5021 for (; morefields; --morefields) {
5022 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
5023 tmp->expression.next = (ast_expression*)var;
5027 /* do not yet turn into a field - remember:
5028 * .void() foo; is a field too
5029 * .void()() foo; is a function
5033 if (!parser_next(parser)) {
5035 parseerror(parser, "parse error after typename");
5039 /* an opening paren now starts the parameter-list of a function
5040 * this is where original-QC has parameter lists.
5041 * We allow a single parameter list here.
5042 * Much like fteqcc we don't allow `float()() x`
5044 if (parser->tok == '(') {
5045 var = parse_parameter_list(parser, var);
5050 /* store the base if requested */
5052 *storebase = ast_value_copy(var);
5054 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5055 tmp->expression.next = (ast_expression*)*storebase;
5060 /* there may be a name now */
5061 if (parser->tok == TOKEN_IDENT) {
5062 name = util_strdup(parser_tokval(parser));
5064 if (!parser_next(parser)) {
5067 parseerror(parser, "error after variable or field declaration");
5072 /* now this may be an array */
5073 if (parser->tok == '[') {
5075 var = parse_arraysize(parser, var);
5077 if (name) mem_d(name);
5082 /* This is the point where we can turn it into a field */
5084 /* turn it into a field if desired */
5085 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5086 tmp->expression.next = (ast_expression*)var;
5090 /* now there may be function parens again */
5091 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5092 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5093 if (parser->tok == '(' && wasarray)
5094 parseerror(parser, "arrays as part of a return type is not supported");
5095 while (parser->tok == '(') {
5096 var = parse_parameter_list(parser, var);
5098 if (name) mem_d(name);
5103 /* finally name it */
5105 if (!ast_value_set_name(var, name)) {
5108 parseerror(parser, "internal error: failed to set name");
5111 /* free the name, ast_value_set_name duplicates */
5118 static bool parse_typedef(parser_t *parser)
5120 ast_value *typevar, *oldtype;
5121 ast_expression *old;
5123 typevar = parse_typename(parser, NULL, NULL);
5128 if ( (old = parser_find_var(parser, typevar->name)) ) {
5129 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
5130 " -> `%s` has been declared here: %s:%i",
5131 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
5132 ast_delete(typevar);
5136 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
5137 parseerror(parser, "type `%s` has already been declared here: %s:%i",
5138 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
5139 ast_delete(typevar);
5143 vec_push(parser->_typedefs, typevar);
5144 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
5146 if (parser->tok != ';') {
5147 parseerror(parser, "expected semicolon after typedef");
5150 if (!parser_next(parser)) {
5151 parseerror(parser, "parse error after typedef");
5158 static const char *cvq_to_str(int cvq) {
5160 case CV_NONE: return "none";
5161 case CV_VAR: return "`var`";
5162 case CV_CONST: return "`const`";
5163 default: return "<INVALID>";
5167 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
5170 if (proto->cvq != var->cvq) {
5171 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
5172 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5173 parser->tok == '='))
5175 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
5176 "`%s` declared with different qualifiers: %s\n"
5177 " -> previous declaration here: %s:%i uses %s",
5178 var->name, cvq_to_str(var->cvq),
5179 ast_ctx(proto).file, ast_ctx(proto).line,
5180 cvq_to_str(proto->cvq));
5183 av = (var ->expression.flags & AST_FLAG_NORETURN);
5184 ao = (proto->expression.flags & AST_FLAG_NORETURN);
5186 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
5187 "`%s` declared with different attributes%s\n"
5188 " -> previous declaration here: %s:%i",
5189 var->name, (av ? ": noreturn" : ""),
5190 ast_ctx(proto).file, ast_ctx(proto).line,
5191 (ao ? ": noreturn" : ""));
5196 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)
5200 ast_expression *old;
5204 ast_value *basetype = NULL;
5206 bool isparam = false;
5207 bool isvector = false;
5208 bool cleanvar = true;
5209 bool wasarray = false;
5211 ast_member *me[3] = { NULL, NULL, NULL };
5213 if (!localblock && is_static)
5214 parseerror(parser, "`static` qualifier is not supported in global scope");
5216 /* get the first complete variable */
5217 var = parse_typename(parser, &basetype, cached_typedef);
5220 ast_delete(basetype);
5228 /* Part 0: finish the type */
5229 if (parser->tok == '(') {
5230 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5231 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5232 var = parse_parameter_list(parser, var);
5238 /* we only allow 1-dimensional arrays */
5239 if (parser->tok == '[') {
5241 var = parse_arraysize(parser, var);
5247 if (parser->tok == '(' && wasarray) {
5248 parseerror(parser, "arrays as part of a return type is not supported");
5249 /* we'll still parse the type completely for now */
5251 /* for functions returning functions */
5252 while (parser->tok == '(') {
5253 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5254 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5255 var = parse_parameter_list(parser, var);
5262 var->cvq = qualifier;
5263 var->expression.flags |= qflags;
5266 * store the vstring back to var for alias and
5267 * deprecation messages.
5269 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5270 var->expression.flags & AST_FLAG_ALIAS)
5271 var->desc = vstring;
5274 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5275 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5276 * is then filled with the previous definition and the parameter-names replaced.
5278 if (!strcmp(var->name, "nil")) {
5279 if (OPTS_FLAG(UNTYPED_NIL)) {
5280 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5281 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5283 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5286 /* Deal with end_sys_ vars */
5288 if (!strcmp(var->name, "end_sys_globals")) {
5290 parser->crc_globals = vec_size(parser->globals);
5293 else if (!strcmp(var->name, "end_sys_fields")) {
5295 parser->crc_fields = vec_size(parser->fields);
5298 if (was_end && var->expression.vtype == TYPE_FIELD) {
5299 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5300 "global '%s' hint should not be a field",
5301 parser_tokval(parser)))
5308 if (!nofields && var->expression.vtype == TYPE_FIELD)
5310 /* deal with field declarations */
5311 old = parser_find_field(parser, var->name);
5313 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5314 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5323 parseerror(parser, "field `%s` already declared here: %s:%i",
5324 var->name, ast_ctx(old).file, ast_ctx(old).line);
5329 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5330 (old = parser_find_global(parser, var->name)))
5332 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5333 parseerror(parser, "field `%s` already declared here: %s:%i",
5334 var->name, ast_ctx(old).file, ast_ctx(old).line);
5341 /* deal with other globals */
5342 old = parser_find_global(parser, var->name);
5343 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5345 /* This is a function which had a prototype */
5346 if (!ast_istype(old, ast_value)) {
5347 parseerror(parser, "internal error: prototype is not an ast_value");
5351 proto = (ast_value*)old;
5352 proto->desc = var->desc;
5353 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5354 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5356 ast_ctx(proto).file, ast_ctx(proto).line);
5360 /* we need the new parameter-names */
5361 for (i = 0; i < vec_size(proto->expression.params); ++i)
5362 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5363 if (!parser_check_qualifiers(parser, var, proto)) {
5370 proto->expression.flags |= var->expression.flags;
5378 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5379 "global `%s` already declared here: %s:%i",
5380 var->name, ast_ctx(old).file, ast_ctx(old).line))
5385 proto = (ast_value*)old;
5386 if (!ast_istype(old, ast_value)) {
5387 parseerror(parser, "internal error: not an ast_value");
5392 if (!parser_check_qualifiers(parser, var, proto)) {
5397 proto->expression.flags |= var->expression.flags;
5401 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5402 (old = parser_find_field(parser, var->name)))
5404 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5405 parseerror(parser, "global `%s` already declared here: %s:%i",
5406 var->name, ast_ctx(old).file, ast_ctx(old).line);
5413 else /* it's not a global */
5415 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5416 if (old && !isparam) {
5417 parseerror(parser, "local `%s` already declared here: %s:%i",
5418 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5422 old = parser_find_local(parser, var->name, 0, &isparam);
5423 if (old && isparam) {
5424 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5425 "local `%s` is shadowing a parameter", var->name))
5427 parseerror(parser, "local `%s` already declared here: %s:%i",
5428 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5432 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5440 /* in a noref section we simply bump the usecount */
5441 if (noref || parser->noref)
5445 * Create the global/local, and deal with vector types.
5448 if (var->expression.vtype == TYPE_VECTOR)
5450 else if (var->expression.vtype == TYPE_FIELD &&
5451 var->expression.next->vtype == TYPE_VECTOR)
5455 if (!create_vector_members(var, me)) {
5462 /* deal with global variables, fields, functions */
5463 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5464 var->isfield = true;
5465 vec_push(parser->fields, (ast_expression*)var);
5466 util_htset(parser->htfields, var->name, var);
5468 for (i = 0; i < 3; ++i) {
5469 vec_push(parser->fields, (ast_expression*)me[i]);
5470 util_htset(parser->htfields, me[i]->name, me[i]);
5475 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5476 parser_addglobal(parser, var->name, (ast_expression*)var);
5478 for (i = 0; i < 3; ++i) {
5479 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5483 ast_expression *find = parser_find_global(parser, var->desc);
5486 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5490 if (var->expression.vtype != find->vtype) {
5494 ast_type_to_string(find, ty1, sizeof(ty1));
5495 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5497 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5504 * add alias to aliases table and to corrector
5505 * so corrections can apply for aliases as well.
5507 util_htset(parser->aliases, var->name, find);
5510 * add to corrector so corrections can work
5511 * even for aliases too.
5514 vec_last(parser->correct_variables),
5515 &vec_last(parser->correct_variables_score),
5519 /* generate aliases for vector components */
5523 util_asprintf(&buffer[0], "%s_x", var->desc);
5524 util_asprintf(&buffer[1], "%s_y", var->desc);
5525 util_asprintf(&buffer[2], "%s_z", var->desc);
5527 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5528 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5529 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5536 * add to corrector so corrections can work
5537 * even for aliases too.
5540 vec_last(parser->correct_variables),
5541 &vec_last(parser->correct_variables_score),
5545 vec_last(parser->correct_variables),
5546 &vec_last(parser->correct_variables_score),
5550 vec_last(parser->correct_variables),
5551 &vec_last(parser->correct_variables_score),
5559 /* a static adds itself to be generated like any other global
5560 * but is added to the local namespace instead
5562 char *defname = NULL;
5563 size_t prefix_len, ln;
5565 ln = strlen(parser->function->name);
5566 vec_append(defname, ln, parser->function->name);
5568 vec_append(defname, 2, "::");
5569 /* remember the length up to here */
5570 prefix_len = vec_size(defname);
5572 /* Add it to the local scope */
5573 util_htset(vec_last(parser->variables), var->name, (void*)var);
5577 vec_last(parser->correct_variables),
5578 &vec_last(parser->correct_variables_score),
5582 /* now rename the global */
5583 ln = strlen(var->name);
5584 vec_append(defname, ln, var->name);
5585 ast_value_set_name(var, defname);
5587 /* push it to the to-be-generated globals */
5588 vec_push(parser->globals, (ast_expression*)var);
5590 /* same game for the vector members */
5592 for (i = 0; i < 3; ++i) {
5593 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5597 vec_last(parser->correct_variables),
5598 &vec_last(parser->correct_variables_score),
5602 vec_shrinkto(defname, prefix_len);
5603 ln = strlen(me[i]->name);
5604 vec_append(defname, ln, me[i]->name);
5605 ast_member_set_name(me[i], defname);
5607 vec_push(parser->globals, (ast_expression*)me[i]);
5612 vec_push(localblock->locals, var);
5613 parser_addlocal(parser, var->name, (ast_expression*)var);
5615 for (i = 0; i < 3; ++i) {
5616 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5617 ast_block_collect(localblock, (ast_expression*)me[i]);
5623 me[0] = me[1] = me[2] = NULL;
5628 if (var->expression.vtype == TYPE_ARRAY) {
5630 util_snprintf(name, sizeof(name), "%s##SET", var->name);
5631 if (!parser_create_array_setter(parser, var, name))
5633 util_snprintf(name, sizeof(name), "%s##GET", var->name);
5634 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5637 else if (!localblock && !nofields &&
5638 var->expression.vtype == TYPE_FIELD &&
5639 var->expression.next->vtype == TYPE_ARRAY)
5642 ast_expression *telem;
5644 ast_value *array = (ast_value*)var->expression.next;
5646 if (!ast_istype(var->expression.next, ast_value)) {
5647 parseerror(parser, "internal error: field element type must be an ast_value");
5651 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5652 if (!parser_create_array_field_setter(parser, array, name))
5655 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5656 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5657 tfield->expression.next = telem;
5658 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5659 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5667 if (parser->tok == ';') {
5668 ast_delete(basetype);
5669 if (!parser_next(parser)) {
5670 parseerror(parser, "error after variable declaration");
5676 if (parser->tok == ',')
5680 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5683 parseerror(parser, "missing comma or semicolon while parsing variables");
5687 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5688 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5689 "initializing expression turns variable `%s` into a constant in this standard",
5696 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5697 if (parser->tok != '=') {
5698 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5702 if (!parser_next(parser)) {
5703 parseerror(parser, "error parsing initializer");
5707 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5708 parseerror(parser, "expected '=' before function body in this standard");
5711 if (parser->tok == '#') {
5712 ast_function *func = NULL;
5713 ast_value *number = NULL;
5719 parseerror(parser, "cannot declare builtins within functions");
5722 if (var->expression.vtype != TYPE_FUNCTION) {
5723 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5726 if (!parser_next(parser)) {
5727 parseerror(parser, "expected builtin number");
5731 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5732 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5734 parseerror(parser, "builtin number expected");
5737 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5740 parseerror(parser, "builtin number must be a compile time constant");
5743 if (number->expression.vtype == TYPE_INTEGER)
5744 builtin_num = number->constval.vint;
5745 else if (number->expression.vtype == TYPE_FLOAT)
5746 builtin_num = number->constval.vfloat;
5749 parseerror(parser, "builtin number must be an integer constant");
5754 fractional = modff(builtin_num, &integral);
5755 if (builtin_num < 0 || fractional != 0) {
5756 parseerror(parser, "builtin number must be an integer greater than zero");
5760 /* we only want the integral part anyways */
5761 builtin_num = integral;
5762 } else if (parser->tok == TOKEN_INTCONST) {
5763 builtin_num = parser_token(parser)->constval.i;
5765 parseerror(parser, "builtin number must be a compile time constant");
5769 if (var->hasvalue) {
5770 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5771 "builtin `%s` has already been defined\n"
5772 " -> previous declaration here: %s:%i",
5773 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5777 func = ast_function_new(ast_ctx(var), var->name, var);
5779 parseerror(parser, "failed to allocate function for `%s`", var->name);
5782 vec_push(parser->functions, func);
5784 func->builtin = -builtin_num-1;
5787 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5788 ? (parser->tok != ',' && parser->tok != ';')
5789 : (!parser_next(parser)))
5791 parseerror(parser, "expected comma or semicolon");
5793 ast_function_delete(func);
5794 var->constval.vfunc = NULL;
5798 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
5801 /* Note that fteqcc and most others don't even *have*
5802 * local arrays, so this is not a high priority.
5804 parseerror(parser, "TODO: initializers for local arrays");
5808 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
5810 parseerror(parser, "TODO: initializing global arrays is not supported yet!");
5813 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
5816 parseerror(parser, "cannot declare functions within functions");
5821 ast_ctx(proto) = parser_ctx(parser);
5823 if (!parse_function_body(parser, var))
5825 ast_delete(basetype);
5826 for (i = 0; i < vec_size(parser->gotos); ++i)
5827 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5828 vec_free(parser->gotos);
5829 vec_free(parser->labels);
5832 ast_expression *cexp;
5835 cexp = parse_expression_leave(parser, true, false, false);
5840 cval = (ast_value*)cexp;
5841 if (cval != parser->nil &&
5842 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5845 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5849 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5850 qualifier != CV_VAR)
5852 var->cvq = CV_CONST;
5854 if (cval == parser->nil)
5855 var->expression.flags |= AST_FLAG_INITIALIZED;
5858 var->hasvalue = true;
5859 if (cval->expression.vtype == TYPE_STRING)
5860 var->constval.vstring = parser_strdup(cval->constval.vstring);
5861 else if (cval->expression.vtype == TYPE_FIELD)
5862 var->constval.vfield = cval;
5864 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5870 shunt sy = { NULL, NULL, NULL, NULL };
5873 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5874 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5875 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5876 if (!parser_sy_apply_operator(parser, &sy))
5879 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5880 parseerror(parser, "internal error: leaked operands");
5881 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5892 if (parser->tok == ',') {
5893 if (!parser_next(parser)) {
5894 parseerror(parser, "expected another variable");
5898 if (parser->tok != TOKEN_IDENT) {
5899 parseerror(parser, "expected another variable");
5902 var = ast_value_copy(basetype);
5904 ast_value_set_name(var, parser_tokval(parser));
5905 if (!parser_next(parser)) {
5906 parseerror(parser, "error parsing variable declaration");
5912 if (parser->tok != ';') {
5913 parseerror(parser, "missing semicolon after variables");
5917 if (!parser_next(parser)) {
5918 parseerror(parser, "parse error after variable declaration");
5922 ast_delete(basetype);
5926 if (cleanvar && var)
5928 ast_delete(basetype);
5932 ast_delete(basetype);
5933 if (cleanvar && var)
5935 if (me[0]) ast_member_delete(me[0]);
5936 if (me[1]) ast_member_delete(me[1]);
5937 if (me[2]) ast_member_delete(me[2]);
5941 static bool parser_global_statement(parser_t *parser)
5945 bool is_static = false;
5946 uint32_t qflags = 0;
5947 ast_value *istype = NULL;
5948 char *vstring = NULL;
5950 if (parser->tok == TOKEN_IDENT)
5951 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5953 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5955 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5957 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5959 if (cvq == CV_WRONG)
5961 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5963 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5965 return parse_enum(parser);
5967 else if (parser->tok == TOKEN_KEYWORD)
5969 if (!strcmp(parser_tokval(parser), "typedef")) {
5970 if (!parser_next(parser)) {
5971 parseerror(parser, "expected type definition after 'typedef'");
5974 return parse_typedef(parser);
5976 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5979 else if (parser->tok == '#')
5981 return parse_pragma(parser);
5983 else if (parser->tok == '$')
5985 if (!parser_next(parser)) {
5986 parseerror(parser, "parse error");
5992 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
5998 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
6000 return util_crc16(old, str, strlen(str));
6003 static void progdefs_crc_file(const char *str)
6005 /* write to progdefs.h here */
6009 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
6011 old = progdefs_crc_sum(old, str);
6012 progdefs_crc_file(str);
6016 static void generate_checksum(parser_t *parser)
6018 uint16_t crc = 0xFFFF;
6022 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
6023 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
6025 progdefs_crc_file("\tint\tpad;\n");
6026 progdefs_crc_file("\tint\tofs_return[3];\n");
6027 progdefs_crc_file("\tint\tofs_parm0[3];\n");
6028 progdefs_crc_file("\tint\tofs_parm1[3];\n");
6029 progdefs_crc_file("\tint\tofs_parm2[3];\n");
6030 progdefs_crc_file("\tint\tofs_parm3[3];\n");
6031 progdefs_crc_file("\tint\tofs_parm4[3];\n");
6032 progdefs_crc_file("\tint\tofs_parm5[3];\n");
6033 progdefs_crc_file("\tint\tofs_parm6[3];\n");
6034 progdefs_crc_file("\tint\tofs_parm7[3];\n");
6036 for (i = 0; i < parser->crc_globals; ++i) {
6037 if (!ast_istype(parser->globals[i], ast_value))
6039 value = (ast_value*)(parser->globals[i]);
6040 switch (value->expression.vtype) {
6041 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6042 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6043 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6044 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6046 crc = progdefs_crc_both(crc, "\tint\t");
6049 crc = progdefs_crc_both(crc, value->name);
6050 crc = progdefs_crc_both(crc, ";\n");
6052 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
6053 for (i = 0; i < parser->crc_fields; ++i) {
6054 if (!ast_istype(parser->fields[i], ast_value))
6056 value = (ast_value*)(parser->fields[i]);
6057 switch (value->expression.next->vtype) {
6058 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6059 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6060 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6061 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6063 crc = progdefs_crc_both(crc, "\tint\t");
6066 crc = progdefs_crc_both(crc, value->name);
6067 crc = progdefs_crc_both(crc, ";\n");
6069 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
6071 parser->code->crc = crc;
6074 parser_t *parser_create()
6080 parser = (parser_t*)mem_a(sizeof(parser_t));
6084 memset(parser, 0, sizeof(*parser));
6086 if (!(parser->code = code_init())) {
6091 for (i = 0; i < operator_count; ++i) {
6092 if (operators[i].id == opid1('=')) {
6093 parser->assign_op = operators+i;
6097 if (!parser->assign_op) {
6098 printf("internal error: initializing parser: failed to find assign operator\n");
6103 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
6104 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
6105 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
6106 vec_push(parser->_blocktypedefs, 0);
6108 parser->aliases = util_htnew(PARSER_HT_SIZE);
6110 parser->ht_imm_string = util_htnew(512);
6113 vec_push(parser->correct_variables, correct_trie_new());
6114 vec_push(parser->correct_variables_score, NULL);
6116 empty_ctx.file = "<internal>";
6118 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
6119 parser->nil->cvq = CV_CONST;
6120 if (OPTS_FLAG(UNTYPED_NIL))
6121 util_htset(parser->htglobals, "nil", (void*)parser->nil);
6123 parser->max_param_count = 1;
6125 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
6126 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
6127 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
6129 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
6130 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
6131 parser->reserved_version->cvq = CV_CONST;
6132 parser->reserved_version->hasvalue = true;
6133 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
6134 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
6136 parser->reserved_version = NULL;
6142 static bool parser_compile(parser_t *parser)
6144 /* initial lexer/parser state */
6145 parser->lex->flags.noops = true;
6147 if (parser_next(parser))
6149 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
6151 if (!parser_global_statement(parser)) {
6152 if (parser->tok == TOKEN_EOF)
6153 parseerror(parser, "unexpected eof");
6154 else if (compile_errors)
6155 parseerror(parser, "there have been errors, bailing out");
6156 lex_close(parser->lex);
6162 parseerror(parser, "parse error");
6163 lex_close(parser->lex);
6168 lex_close(parser->lex);
6171 return !compile_errors;
6174 bool parser_compile_file(parser_t *parser, const char *filename)
6176 parser->lex = lex_open(filename);
6178 con_err("failed to open file \"%s\"\n", filename);
6181 return parser_compile(parser);
6184 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
6186 parser->lex = lex_open_string(str, len, name);
6188 con_err("failed to create lexer for string \"%s\"\n", name);
6191 return parser_compile(parser);
6194 static void parser_remove_ast(parser_t *parser)
6197 if (parser->ast_cleaned)
6199 parser->ast_cleaned = true;
6200 for (i = 0; i < vec_size(parser->accessors); ++i) {
6201 ast_delete(parser->accessors[i]->constval.vfunc);
6202 parser->accessors[i]->constval.vfunc = NULL;
6203 ast_delete(parser->accessors[i]);
6205 for (i = 0; i < vec_size(parser->functions); ++i) {
6206 ast_delete(parser->functions[i]);
6208 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6209 ast_delete(parser->imm_vector[i]);
6211 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6212 ast_delete(parser->imm_string[i]);
6214 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6215 ast_delete(parser->imm_float[i]);
6217 for (i = 0; i < vec_size(parser->fields); ++i) {
6218 ast_delete(parser->fields[i]);
6220 for (i = 0; i < vec_size(parser->globals); ++i) {
6221 ast_delete(parser->globals[i]);
6223 vec_free(parser->accessors);
6224 vec_free(parser->functions);
6225 vec_free(parser->imm_vector);
6226 vec_free(parser->imm_string);
6227 util_htdel(parser->ht_imm_string);
6228 vec_free(parser->imm_float);
6229 vec_free(parser->globals);
6230 vec_free(parser->fields);
6232 for (i = 0; i < vec_size(parser->variables); ++i)
6233 util_htdel(parser->variables[i]);
6234 vec_free(parser->variables);
6235 vec_free(parser->_blocklocals);
6236 vec_free(parser->_locals);
6239 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
6240 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
6242 vec_free(parser->correct_variables);
6243 vec_free(parser->correct_variables_score);
6246 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6247 ast_delete(parser->_typedefs[i]);
6248 vec_free(parser->_typedefs);
6249 for (i = 0; i < vec_size(parser->typedefs); ++i)
6250 util_htdel(parser->typedefs[i]);
6251 vec_free(parser->typedefs);
6252 vec_free(parser->_blocktypedefs);
6254 vec_free(parser->_block_ctx);
6256 vec_free(parser->labels);
6257 vec_free(parser->gotos);
6258 vec_free(parser->breaks);
6259 vec_free(parser->continues);
6261 ast_value_delete(parser->nil);
6263 ast_value_delete(parser->const_vec[0]);
6264 ast_value_delete(parser->const_vec[1]);
6265 ast_value_delete(parser->const_vec[2]);
6267 util_htdel(parser->aliases);
6268 intrin_intrinsics_destroy(parser);
6271 void parser_cleanup(parser_t *parser)
6273 parser_remove_ast(parser);
6274 code_cleanup(parser->code);
6279 bool parser_finish(parser_t *parser, const char *output)
6285 if (compile_errors) {
6286 con_out("*** there were compile errors\n");
6290 ir = ir_builder_new("gmqcc_out");
6292 con_out("failed to allocate builder\n");
6296 for (i = 0; i < vec_size(parser->fields); ++i) {
6299 if (!ast_istype(parser->fields[i], ast_value))
6301 field = (ast_value*)parser->fields[i];
6302 hasvalue = field->hasvalue;
6303 field->hasvalue = false;
6304 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6305 con_out("failed to generate field %s\n", field->name);
6306 ir_builder_delete(ir);
6311 ast_expression *subtype;
6312 field->hasvalue = true;
6313 subtype = field->expression.next;
6314 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6315 if (subtype->vtype == TYPE_FIELD)
6316 ifld->fieldtype = subtype->next->vtype;
6317 else if (subtype->vtype == TYPE_FUNCTION)
6318 ifld->outtype = subtype->next->vtype;
6319 (void)!ir_value_set_field(field->ir_v, ifld);
6322 for (i = 0; i < vec_size(parser->globals); ++i) {
6324 if (!ast_istype(parser->globals[i], ast_value))
6326 asvalue = (ast_value*)(parser->globals[i]);
6327 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6328 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6329 "unused global: `%s`", asvalue->name);
6331 if (!ast_global_codegen(asvalue, ir, false)) {
6332 con_out("failed to generate global %s\n", asvalue->name);
6333 ir_builder_delete(ir);
6337 /* Build function vararg accessor ast tree now before generating
6338 * immediates, because the accessors may add new immediates
6340 for (i = 0; i < vec_size(parser->functions); ++i) {
6341 ast_function *f = parser->functions[i];
6343 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6344 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6345 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6346 con_out("failed to generate vararg setter for %s\n", f->name);
6347 ir_builder_delete(ir);
6350 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6351 con_out("failed to generate vararg getter for %s\n", f->name);
6352 ir_builder_delete(ir);
6356 ast_delete(f->varargs);
6361 /* Now we can generate immediates */
6362 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6363 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
6364 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
6365 ir_builder_delete(ir);
6369 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6370 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
6371 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
6372 ir_builder_delete(ir);
6376 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6377 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
6378 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
6379 ir_builder_delete(ir);
6383 for (i = 0; i < vec_size(parser->globals); ++i) {
6385 if (!ast_istype(parser->globals[i], ast_value))
6387 asvalue = (ast_value*)(parser->globals[i]);
6388 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6390 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6391 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6392 "uninitialized constant: `%s`",
6394 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6395 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6396 "uninitialized global: `%s`",
6399 if (!ast_generate_accessors(asvalue, ir)) {
6400 ir_builder_delete(ir);
6404 for (i = 0; i < vec_size(parser->fields); ++i) {
6406 asvalue = (ast_value*)(parser->fields[i]->next);
6408 if (!ast_istype((ast_expression*)asvalue, ast_value))
6410 if (asvalue->expression.vtype != TYPE_ARRAY)
6412 if (!ast_generate_accessors(asvalue, ir)) {
6413 ir_builder_delete(ir);
6417 if (parser->reserved_version &&
6418 !ast_global_codegen(parser->reserved_version, ir, false))
6420 con_out("failed to generate reserved::version");
6421 ir_builder_delete(ir);
6424 for (i = 0; i < vec_size(parser->functions); ++i) {
6425 ast_function *f = parser->functions[i];
6426 if (!ast_function_codegen(f, ir)) {
6427 con_out("failed to generate function %s\n", f->name);
6428 ir_builder_delete(ir);
6433 generate_checksum(parser);
6434 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6435 ir_builder_dump(ir, con_out);
6436 for (i = 0; i < vec_size(parser->functions); ++i) {
6437 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6438 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6439 ir_builder_delete(ir);
6443 parser_remove_ast(parser);
6445 if (compile_Werrors) {
6446 con_out("*** there were warnings treated as errors\n");
6447 compile_show_werrors();
6452 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6453 ir_builder_dump(ir, con_out);
6455 if (!ir_builder_generate(parser->code, ir, output)) {
6456 con_out("*** failed to generate output file\n");
6457 ir_builder_delete(ir);
6461 ir_builder_delete(ir);