2 * Copyright (C) 2012, 2013
6 * Permission is hereby granted, free of charge, to any person obtaining a copy of
7 * this software and associated documentation files (the "Software"), to deal in
8 * the Software without restriction, including without limitation the rights to
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13 * The above copyright notice and this permission notice shall be included in all
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16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 /* beginning of locals */
33 #define PARSER_HT_LOCALS 2
35 #define PARSER_HT_SIZE 128
36 #define TYPEDEF_HT_SIZE 16
38 typedef struct parser_s {
42 ast_expression **globals;
43 ast_expression **fields;
44 ast_function **functions;
45 ast_value **imm_float;
46 ast_value **imm_string;
47 ast_value **imm_vector;
52 /* must be deleted first, they reference immediates and values */
53 ast_value **accessors;
55 ast_value *imm_float_zero;
56 ast_value *imm_float_one;
57 ast_value *imm_float_neg_one;
59 ast_value *imm_vector_zero;
62 ast_value *reserved_version;
67 ast_function *function;
70 /* All the labels the function defined...
71 * Should they be in ast_function instead?
76 const char **continues;
78 /* A list of hashtables for each scope */
84 /* same as above but for the spelling corrector */
85 correct_trie_t **correct_variables;
86 size_t ***correct_variables_score; /* vector of vector of size_t* */
88 /* not to be used directly, we use the hash table */
89 ast_expression **_locals;
91 ast_value **_typedefs;
92 size_t *_blocktypedefs;
95 /* we store the '=' operator info */
96 const oper_info *assign_op;
99 ast_value *const_vec[3];
104 /* collected information */
105 size_t max_param_count;
111 static ast_expression * const intrinsic_debug_typestring = (ast_expression*)0x1;
113 static void parser_enterblock(parser_t *parser);
114 static bool parser_leaveblock(parser_t *parser);
115 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
116 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
117 static bool parse_typedef(parser_t *parser);
118 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool is_static, uint32_t qflags, char *vstring);
119 static ast_block* parse_block(parser_t *parser);
120 static bool parse_block_into(parser_t *parser, ast_block *block);
121 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
122 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
123 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
124 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
125 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname);
126 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname);
127 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
129 static void parseerror(parser_t *parser, const char *fmt, ...)
133 vcompile_error(parser->lex->tok.ctx, fmt, ap);
137 /* returns true if it counts as an error */
138 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
143 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
148 /**********************************************************************
149 * some maths used for constant folding
152 vector vec3_add(vector a, vector b)
161 vector vec3_sub(vector a, vector b)
170 qcfloat vec3_mulvv(vector a, vector b)
172 return (a.x * b.x + a.y * b.y + a.z * b.z);
175 vector vec3_mulvf(vector a, float b)
184 /**********************************************************************
188 bool parser_next(parser_t *parser)
190 /* lex_do kills the previous token */
191 parser->tok = lex_do(parser->lex);
192 if (parser->tok == TOKEN_EOF)
194 if (parser->tok >= TOKEN_ERROR) {
195 parseerror(parser, "lex error");
201 #define parser_tokval(p) ((p)->lex->tok.value)
202 #define parser_token(p) (&((p)->lex->tok))
203 #define parser_ctx(p) ((p)->lex->tok.ctx)
205 static ast_value* parser_const_float(parser_t *parser, double d)
210 for (i = 0; i < vec_size(parser->imm_float); ++i) {
211 const double compare = parser->imm_float[i]->constval.vfloat;
212 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
213 return parser->imm_float[i];
216 ctx = parser_ctx(parser);
218 memset(&ctx, 0, sizeof(ctx));
220 out = ast_value_new(ctx, "#IMMEDIATE", TYPE_FLOAT);
222 out->hasvalue = true;
224 out->constval.vfloat = d;
225 vec_push(parser->imm_float, out);
229 static ast_value* parser_const_float_0(parser_t *parser)
231 if (!parser->imm_float_zero)
232 parser->imm_float_zero = parser_const_float(parser, 0);
233 return parser->imm_float_zero;
236 static ast_value* parser_const_float_neg1(parser_t *parser) {
237 if (!parser->imm_float_neg_one)
238 parser->imm_float_neg_one = parser_const_float(parser, -1);
239 return parser->imm_float_neg_one;
242 static ast_value* parser_const_float_1(parser_t *parser)
244 if (!parser->imm_float_one)
245 parser->imm_float_one = parser_const_float(parser, 1);
246 return parser->imm_float_one;
249 static char *parser_strdup(const char *str)
252 /* actually dup empty strings */
253 char *out = (char*)mem_a(1);
257 return util_strdup(str);
260 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
262 size_t hash = util_hthash(parser->ht_imm_string, str);
264 if ( (out = (ast_value*)util_htgeth(parser->ht_imm_string, str, hash)) ) {
265 if (dotranslate && out->name[0] == '#') {
267 util_snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
268 ast_value_set_name(out, name);
273 for (i = 0; i < vec_size(parser->imm_string); ++i) {
274 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
275 return parser->imm_string[i];
280 util_snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
281 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
283 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
285 out->hasvalue = true;
287 out->constval.vstring = parser_strdup(str);
288 vec_push(parser->imm_string, out);
289 util_htseth(parser->ht_imm_string, str, hash, out);
293 static ast_value* parser_const_vector(parser_t *parser, vector v)
297 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
298 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
299 return parser->imm_vector[i];
301 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
303 out->hasvalue = true;
305 out->constval.vvec = v;
306 vec_push(parser->imm_vector, out);
310 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
316 return parser_const_vector(parser, v);
319 static ast_value* parser_const_vector_0(parser_t *parser)
321 if (!parser->imm_vector_zero)
322 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
323 return parser->imm_vector_zero;
326 static ast_expression* parser_find_field(parser_t *parser, const char *name)
328 return ( ast_expression*)util_htget(parser->htfields, name);
331 static ast_expression* parser_find_label(parser_t *parser, const char *name)
334 for(i = 0; i < vec_size(parser->labels); i++)
335 if (!strcmp(parser->labels[i]->name, name))
336 return (ast_expression*)parser->labels[i];
340 static ast_expression* parser_find_global(parser_t *parser, const char *name)
342 ast_expression *var = (ast_expression*)util_htget(parser->aliases, parser_tokval(parser));
345 return (ast_expression*)util_htget(parser->htglobals, name);
348 static ast_expression* parser_find_param(parser_t *parser, const char *name)
352 if (!parser->function)
354 fun = parser->function->vtype;
355 for (i = 0; i < vec_size(fun->expression.params); ++i) {
356 if (!strcmp(fun->expression.params[i]->name, name))
357 return (ast_expression*)(fun->expression.params[i]);
362 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
367 hash = util_hthash(parser->htglobals, name);
370 for (i = vec_size(parser->variables); i > upto;) {
372 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
376 return parser_find_param(parser, name);
379 static ast_expression* parser_find_var(parser_t *parser, const char *name)
383 v = parser_find_local(parser, name, 0, &dummy);
384 if (!v) v = parser_find_global(parser, name);
388 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
392 hash = util_hthash(parser->typedefs[0], name);
394 for (i = vec_size(parser->typedefs); i > upto;) {
396 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
402 /* include intrinsics */
407 size_t etype; /* 0 = expression, others are operators */
411 ast_block *block; /* for commas and function calls */
430 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
441 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
445 e.out = (ast_expression*)v;
452 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
454 e.etype = 1 + (op - operators);
463 static sy_elem syparen(lex_ctx ctx, size_t off) {
474 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
475 * so we need to rotate it to become ent.(foo[n]).
477 static bool rotate_entfield_array_index_nodes(ast_expression **out)
479 ast_array_index *index, *oldindex;
480 ast_entfield *entfield;
484 ast_expression *entity;
486 lex_ctx ctx = ast_ctx(*out);
488 if (!ast_istype(*out, ast_array_index))
490 index = (ast_array_index*)*out;
492 if (!ast_istype(index->array, ast_entfield))
494 entfield = (ast_entfield*)index->array;
496 if (!ast_istype(entfield->field, ast_value))
498 field = (ast_value*)entfield->field;
501 entity = entfield->entity;
505 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
506 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
507 *out = (ast_expression*)entfield;
509 oldindex->array = NULL;
510 oldindex->index = NULL;
511 ast_delete(oldindex);
516 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
518 switch (v->expression.vtype) {
520 return !!v->constval.vfloat;
522 return !!v->constval.vint;
524 if (OPTS_FLAG(CORRECT_LOGIC))
525 return v->constval.vvec.x &&
526 v->constval.vvec.y &&
529 return !!(v->constval.vvec.x);
531 if (!v->constval.vstring)
533 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
535 return !!v->constval.vstring[0];
537 compile_error(ctx, "internal error: immediate_is_true on invalid type");
538 return !!v->constval.vfunc;
542 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
546 ast_expression *out = NULL;
547 ast_expression *exprs[3];
548 ast_block *blocks[3];
549 ast_value *asvalue[3];
550 ast_binstore *asbinstore;
551 size_t i, assignop, addop, subop;
552 qcint generated_op = 0;
557 if (!vec_size(sy->ops)) {
558 parseerror(parser, "internal error: missing operator");
562 if (vec_last(sy->ops).isparen) {
563 parseerror(parser, "unmatched parenthesis");
567 op = &operators[vec_last(sy->ops).etype - 1];
568 ctx = vec_last(sy->ops).ctx;
570 if (vec_size(sy->out) < op->operands) {
571 compile_error(ctx, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
572 op->op, (int)op->id);
576 vec_shrinkby(sy->ops, 1);
578 /* op(:?) has no input and no output */
582 vec_shrinkby(sy->out, op->operands);
583 for (i = 0; i < op->operands; ++i) {
584 exprs[i] = sy->out[vec_size(sy->out)+i].out;
585 blocks[i] = sy->out[vec_size(sy->out)+i].block;
586 asvalue[i] = (ast_value*)exprs[i];
588 if (exprs[i]->expression.vtype == TYPE_NOEXPR &&
589 !(i != 0 && op->id == opid2('?',':')) &&
590 !(i == 1 && op->id == opid1('.')))
592 if (ast_istype(exprs[i], ast_label))
593 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
595 compile_error(ast_ctx(exprs[i]), "not an expression");
596 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
600 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
601 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
605 #define NotSameType(T) \
606 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
607 exprs[0]->expression.vtype != T)
608 #define CanConstFold1(A) \
609 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
610 (A)->expression.vtype != TYPE_FUNCTION)
611 #define CanConstFold(A, B) \
612 (CanConstFold1(A) && CanConstFold1(B))
613 #define ConstV(i) (asvalue[(i)]->constval.vvec)
614 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
615 #define ConstS(i) (asvalue[(i)]->constval.vstring)
619 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
623 if (exprs[0]->expression.vtype == TYPE_VECTOR &&
624 exprs[1]->expression.vtype == TYPE_NOEXPR)
626 if (exprs[1] == (ast_expression*)parser->const_vec[0])
627 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
628 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
629 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
630 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
631 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
633 compile_error(ctx, "access to invalid vector component");
637 else if (exprs[0]->expression.vtype == TYPE_ENTITY) {
638 if (exprs[1]->expression.vtype != TYPE_FIELD) {
639 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
642 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
644 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
645 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
649 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
655 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
656 !(exprs[0]->expression.vtype == TYPE_FIELD &&
657 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
659 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
660 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
663 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
664 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
665 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
668 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
669 if (rotate_entfield_array_index_nodes(&out))
672 /* This is not broken in fteqcc anymore */
673 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
674 /* this error doesn't need to make us bail out */
675 (void)!parsewarning(parser, WARN_EXTENSIONS,
676 "accessing array-field members of an entity without parenthesis\n"
677 " -> this is an extension from -std=gmqcc");
684 if (vec_size(sy->paren) && vec_last(sy->paren) == PAREN_FUNC) {
685 vec_push(sy->out, syexp(ctx, exprs[0]));
686 vec_push(sy->out, syexp(ctx, exprs[1]));
687 vec_last(sy->argc)++;
691 if (!ast_block_add_expr(blocks[0], exprs[1]))
694 blocks[0] = ast_block_new(ctx);
695 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
696 !ast_block_add_expr(blocks[0], exprs[1]))
701 ast_block_set_type(blocks[0], exprs[1]);
703 vec_push(sy->out, syblock(ctx, blocks[0]));
710 switch (exprs[0]->expression.vtype) {
712 if (CanConstFold1(exprs[0]))
713 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
715 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
716 (ast_expression*)parser_const_float_0(parser),
720 if (CanConstFold1(exprs[0]))
721 out = (ast_expression*)parser_const_vector_f(parser,
722 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
724 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
725 (ast_expression*)parser_const_vector_0(parser),
729 compile_error(ctx, "invalid types used in expression: cannot negate type %s",
730 type_name[exprs[0]->expression.vtype]);
736 switch (exprs[0]->expression.vtype) {
738 if (CanConstFold1(exprs[0]))
739 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
741 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
744 if (CanConstFold1(exprs[0]))
745 out = (ast_expression*)parser_const_float(parser,
746 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
748 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
751 if (CanConstFold1(exprs[0])) {
752 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
753 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
755 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
757 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
758 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
760 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
763 /* we don't constant-fold NOT for these types */
765 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
768 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
771 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
772 type_name[exprs[0]->expression.vtype]);
778 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
779 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
781 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
782 type_name[exprs[0]->expression.vtype],
783 type_name[exprs[1]->expression.vtype]);
786 switch (exprs[0]->expression.vtype) {
788 if (CanConstFold(exprs[0], exprs[1]))
790 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
793 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
796 if (CanConstFold(exprs[0], exprs[1]))
797 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
799 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
802 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
803 type_name[exprs[0]->expression.vtype],
804 type_name[exprs[1]->expression.vtype]);
809 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
810 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
812 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
813 type_name[exprs[1]->expression.vtype],
814 type_name[exprs[0]->expression.vtype]);
817 switch (exprs[0]->expression.vtype) {
819 if (CanConstFold(exprs[0], exprs[1]))
820 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
822 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
825 if (CanConstFold(exprs[0], exprs[1]))
826 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
828 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
831 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
832 type_name[exprs[1]->expression.vtype],
833 type_name[exprs[0]->expression.vtype]);
838 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
839 !(exprs[0]->expression.vtype == TYPE_VECTOR &&
840 exprs[1]->expression.vtype == TYPE_FLOAT) &&
841 !(exprs[1]->expression.vtype == TYPE_VECTOR &&
842 exprs[0]->expression.vtype == TYPE_FLOAT)
845 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
846 type_name[exprs[1]->expression.vtype],
847 type_name[exprs[0]->expression.vtype]);
850 switch (exprs[0]->expression.vtype) {
852 if (exprs[1]->expression.vtype == TYPE_VECTOR)
854 if (CanConstFold(exprs[0], exprs[1]))
855 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
857 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
861 if (CanConstFold(exprs[0], exprs[1]))
862 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
864 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
868 if (exprs[1]->expression.vtype == TYPE_FLOAT)
870 if (CanConstFold(exprs[0], exprs[1]))
871 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
873 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
877 if (CanConstFold(exprs[0], exprs[1]))
878 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
879 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[0])) {
880 vector vec = ConstV(0);
881 if (!vec.y && !vec.z) { /* 'n 0 0' * v */
882 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
883 out = (ast_expression*)ast_member_new(ctx, exprs[1], 0, NULL);
884 out->expression.node.keep = false;
885 ((ast_member*)out)->rvalue = true;
887 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.x), out);
889 else if (!vec.x && !vec.z) { /* '0 n 0' * v */
890 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
891 out = (ast_expression*)ast_member_new(ctx, exprs[1], 1, NULL);
892 out->expression.node.keep = false;
893 ((ast_member*)out)->rvalue = true;
895 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.y), out);
897 else if (!vec.x && !vec.y) { /* '0 n 0' * v */
898 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
899 out = (ast_expression*)ast_member_new(ctx, exprs[1], 2, NULL);
900 out->expression.node.keep = false;
901 ((ast_member*)out)->rvalue = true;
903 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.z), out);
906 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
908 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[1])) {
909 vector vec = ConstV(1);
910 if (!vec.y && !vec.z) { /* v * 'n 0 0' */
911 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
912 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
913 out->expression.node.keep = false;
914 ((ast_member*)out)->rvalue = true;
916 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.x));
918 else if (!vec.x && !vec.z) { /* v * '0 n 0' */
919 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
920 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
921 out->expression.node.keep = false;
922 ((ast_member*)out)->rvalue = true;
924 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.y));
926 else if (!vec.x && !vec.y) { /* v * '0 n 0' */
927 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
928 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
929 out->expression.node.keep = false;
930 ((ast_member*)out)->rvalue = true;
932 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.z));
935 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
938 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
942 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
943 type_name[exprs[1]->expression.vtype],
944 type_name[exprs[0]->expression.vtype]);
949 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
950 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
951 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
952 compile_error(ctx, "invalid types used in expression: cannot divide tyeps %s and %s", ty1, ty2);
955 if (exprs[0]->expression.vtype == TYPE_FLOAT) {
956 if (CanConstFold(exprs[0], exprs[1]))
957 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
959 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
961 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
962 if (CanConstFold(exprs[0], exprs[1]))
963 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), 1.0/ConstF(1)));
965 if (CanConstFold1(exprs[1])) {
966 out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
968 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
969 (ast_expression*)parser_const_float_1(parser),
973 compile_error(ctx, "internal error: failed to generate division");
976 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], out);
981 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
982 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
983 compile_error(ctx, "invalid types used in expression: cannot divide tyeps %s and %s", ty1, ty2);
989 if (NotSameType(TYPE_FLOAT)) {
990 compile_error(ctx, "invalid types used in expression: cannot perform modulo operation between types %s and %s",
991 type_name[exprs[0]->expression.vtype],
992 type_name[exprs[1]->expression.vtype]);
995 if (CanConstFold(exprs[0], exprs[1])) {
996 out = (ast_expression*)parser_const_float(parser,
997 (float)(((qcint)ConstF(0)) % ((qcint)ConstF(1))));
999 /* generate a call to __builtin_mod */
1000 ast_expression *mod = intrin_func(parser, "mod");
1001 ast_call *call = NULL;
1002 if (!mod) return false; /* can return null for missing floor */
1004 call = ast_call_new(parser_ctx(parser), mod);
1005 vec_push(call->params, exprs[0]);
1006 vec_push(call->params, exprs[1]);
1008 out = (ast_expression*)call;
1012 case opid2('%','='):
1013 compile_error(ctx, "%= is unimplemented");
1018 if (NotSameType(TYPE_FLOAT)) {
1019 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
1020 type_name[exprs[0]->expression.vtype],
1021 type_name[exprs[1]->expression.vtype]);
1024 if (CanConstFold(exprs[0], exprs[1]))
1025 out = (ast_expression*)parser_const_float(parser,
1026 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
1027 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
1029 out = (ast_expression*)ast_binary_new(ctx,
1030 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
1031 exprs[0], exprs[1]);
1034 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor via ^");
1037 case opid2('<','<'):
1038 case opid2('>','>'):
1039 if (CanConstFold(exprs[0], exprs[1]) && ! NotSameType(TYPE_FLOAT)) {
1040 if (op->id == opid2('<','<'))
1041 out = (ast_expression*)parser_const_float(parser, (double)((int)(ConstF(0)) << (int)(ConstF(1))));
1043 out = (ast_expression*)parser_const_float(parser, (double)((int)(ConstF(0)) >> (int)(ConstF(1))));
1046 case opid3('<','<','='):
1047 case opid3('>','>','='):
1048 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
1051 case opid2('|','|'):
1052 generated_op += 1; /* INSTR_OR */
1053 case opid2('&','&'):
1054 generated_op += INSTR_AND;
1055 if (CanConstFold(exprs[0], exprs[1]))
1057 if (OPTS_FLAG(PERL_LOGIC)) {
1058 if (immediate_is_true(ctx, asvalue[0]))
1062 out = (ast_expression*)parser_const_float(parser,
1063 ( (generated_op == INSTR_OR)
1064 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
1065 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
1070 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
1071 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1072 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1073 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
1076 for (i = 0; i < 2; ++i) {
1077 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->expression.vtype == TYPE_VECTOR) {
1078 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
1080 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1082 exprs[i] = out; out = NULL;
1083 if (OPTS_FLAG(PERL_LOGIC)) {
1084 /* here we want to keep the right expressions' type */
1088 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->expression.vtype == TYPE_STRING) {
1089 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
1091 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1093 exprs[i] = out; out = NULL;
1094 if (OPTS_FLAG(PERL_LOGIC)) {
1095 /* here we want to keep the right expressions' type */
1100 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1104 case opid2('?',':'):
1105 if (vec_last(sy->paren) != PAREN_TERNARY2) {
1106 compile_error(ctx, "mismatched parenthesis/ternary");
1110 if (!ast_compare_type(exprs[1], exprs[2])) {
1111 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
1112 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
1113 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
1116 if (CanConstFold1(exprs[0]))
1117 out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
1119 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
1122 case opid2('*', '*'):
1123 if (NotSameType(TYPE_FLOAT)) {
1124 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1125 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1126 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
1132 if (CanConstFold(exprs[0], exprs[1])) {
1133 out = (ast_expression*)parser_const_float(parser, powf(ConstF(0), ConstF(1)));
1135 ast_call *gencall = ast_call_new(parser_ctx(parser), intrin_func(parser, "pow"));
1136 vec_push(gencall->params, exprs[0]);
1137 vec_push(gencall->params, exprs[1]);
1138 out = (ast_expression*)gencall;
1142 case opid3('<','=','>'): /* -1, 0, or 1 */
1143 if (NotSameType(TYPE_FLOAT)) {
1144 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1145 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1146 compile_error(ctx, "invalid types used in comparision: %s and %s",
1152 if (CanConstFold(exprs[0], exprs[1])) {
1153 if (ConstF(0) < ConstF(1))
1154 out = (ast_expression*)parser_const_float_neg1(parser);
1155 else if (ConstF(0) == ConstF(1))
1156 out = (ast_expression*)parser_const_float_0(parser);
1157 else if (ConstF(0) > ConstF(1))
1158 out = (ast_expression*)parser_const_float_1(parser);
1160 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
1162 eq->refs = (ast_binary_ref)false; /* references nothing */
1165 out = (ast_expression*)ast_ternary_new(ctx,
1166 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
1168 (ast_expression*)parser_const_float_neg1(parser),
1171 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
1173 (ast_expression*)parser_const_float_0(parser),
1176 (ast_expression*)parser_const_float_1(parser)
1186 generated_op += 1; /* INSTR_GT */
1188 generated_op += 1; /* INSTR_LT */
1189 case opid2('>', '='):
1190 generated_op += 1; /* INSTR_GE */
1191 case opid2('<', '='):
1192 generated_op += INSTR_LE;
1193 if (NotSameType(TYPE_FLOAT)) {
1194 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1195 type_name[exprs[0]->expression.vtype],
1196 type_name[exprs[1]->expression.vtype]);
1199 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1201 case opid2('!', '='):
1202 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1203 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1204 type_name[exprs[0]->expression.vtype],
1205 type_name[exprs[1]->expression.vtype]);
1208 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1210 case opid2('=', '='):
1211 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1212 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1213 type_name[exprs[0]->expression.vtype],
1214 type_name[exprs[1]->expression.vtype]);
1217 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1221 if (ast_istype(exprs[0], ast_entfield)) {
1222 ast_expression *field = ((ast_entfield*)exprs[0])->field;
1223 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1224 exprs[0]->expression.vtype == TYPE_FIELD &&
1225 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1227 assignop = type_storep_instr[TYPE_VECTOR];
1230 assignop = type_storep_instr[exprs[0]->expression.vtype];
1231 if (assignop == VINSTR_END || !ast_compare_type(field->expression.next, exprs[1]))
1233 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
1234 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1235 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1236 field->expression.next->expression.vtype == TYPE_FUNCTION &&
1237 exprs[1]->expression.vtype == TYPE_FUNCTION)
1239 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1240 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1243 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1248 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1249 exprs[0]->expression.vtype == TYPE_FIELD &&
1250 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1252 assignop = type_store_instr[TYPE_VECTOR];
1255 assignop = type_store_instr[exprs[0]->expression.vtype];
1258 if (assignop == VINSTR_END) {
1259 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1260 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1261 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1263 else if (!ast_compare_type(exprs[0], exprs[1]))
1265 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1266 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1267 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1268 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1269 exprs[1]->expression.vtype == TYPE_FUNCTION)
1271 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1272 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1275 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1278 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1279 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1281 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1283 case opid3('+','+','P'):
1284 case opid3('-','-','P'):
1286 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1287 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1288 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
1291 if (op->id == opid3('+','+','P'))
1292 addop = INSTR_ADD_F;
1294 addop = INSTR_SUB_F;
1295 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1296 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1298 if (ast_istype(exprs[0], ast_entfield)) {
1299 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1301 (ast_expression*)parser_const_float_1(parser));
1303 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1305 (ast_expression*)parser_const_float_1(parser));
1308 case opid3('S','+','+'):
1309 case opid3('S','-','-'):
1311 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1312 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1313 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
1316 if (op->id == opid3('S','+','+')) {
1317 addop = INSTR_ADD_F;
1318 subop = INSTR_SUB_F;
1320 addop = INSTR_SUB_F;
1321 subop = INSTR_ADD_F;
1323 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1324 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1326 if (ast_istype(exprs[0], ast_entfield)) {
1327 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1329 (ast_expression*)parser_const_float_1(parser));
1331 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1333 (ast_expression*)parser_const_float_1(parser));
1337 out = (ast_expression*)ast_binary_new(ctx, subop,
1339 (ast_expression*)parser_const_float_1(parser));
1341 case opid2('+','='):
1342 case opid2('-','='):
1343 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1344 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1346 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1347 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1348 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1352 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1353 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1355 if (ast_istype(exprs[0], ast_entfield))
1356 assignop = type_storep_instr[exprs[0]->expression.vtype];
1358 assignop = type_store_instr[exprs[0]->expression.vtype];
1359 switch (exprs[0]->expression.vtype) {
1361 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1362 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1363 exprs[0], exprs[1]);
1366 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1367 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1368 exprs[0], exprs[1]);
1371 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1372 type_name[exprs[0]->expression.vtype],
1373 type_name[exprs[1]->expression.vtype]);
1377 case opid2('*','='):
1378 case opid2('/','='):
1379 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1380 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1381 exprs[0]->expression.vtype == TYPE_VECTOR))
1383 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1384 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1385 compile_error(ctx, "invalid types used in expression: %s and %s",
1389 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1390 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1392 if (ast_istype(exprs[0], ast_entfield))
1393 assignop = type_storep_instr[exprs[0]->expression.vtype];
1395 assignop = type_store_instr[exprs[0]->expression.vtype];
1396 switch (exprs[0]->expression.vtype) {
1398 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1399 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1400 exprs[0], exprs[1]);
1403 if (op->id == opid2('*','=')) {
1404 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1405 exprs[0], exprs[1]);
1407 /* there's no DIV_VF */
1408 if (CanConstFold1(exprs[1])) {
1409 out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
1411 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1412 (ast_expression*)parser_const_float_1(parser),
1416 compile_error(ctx, "internal error: failed to generate division");
1419 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1424 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1425 type_name[exprs[0]->expression.vtype],
1426 type_name[exprs[1]->expression.vtype]);
1430 case opid2('&','='):
1431 case opid2('|','='):
1432 if (NotSameType(TYPE_FLOAT)) {
1433 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1434 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1435 compile_error(ctx, "invalid types used in expression: %s and %s",
1439 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1440 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1442 if (ast_istype(exprs[0], ast_entfield))
1443 assignop = type_storep_instr[exprs[0]->expression.vtype];
1445 assignop = type_store_instr[exprs[0]->expression.vtype];
1446 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1447 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1448 exprs[0], exprs[1]);
1450 case opid3('&','~','='):
1451 /* This is like: a &= ~(b);
1452 * But QC has no bitwise-not, so we implement it as
1455 if (NotSameType(TYPE_FLOAT)) {
1456 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1457 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1458 compile_error(ctx, "invalid types used in expression: %s and %s",
1462 if (ast_istype(exprs[0], ast_entfield))
1463 assignop = type_storep_instr[exprs[0]->expression.vtype];
1465 assignop = type_store_instr[exprs[0]->expression.vtype];
1466 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1469 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1470 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1472 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1473 asbinstore->keep_dest = true;
1474 out = (ast_expression*)asbinstore;
1477 case opid2('~', 'P'):
1478 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1479 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1480 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1484 if(CanConstFold1(exprs[0]))
1485 out = (ast_expression*)parser_const_float(parser, ~(qcint)ConstF(0));
1487 out = (ast_expression*)
1488 ast_binary_new(ctx, INSTR_SUB_F, (ast_expression*)parser_const_float_neg1(parser), exprs[0]);
1494 compile_error(ctx, "failed to apply operator %s", op->op);
1498 vec_push(sy->out, syexp(ctx, out));
1502 static bool parser_close_call(parser_t *parser, shunt *sy)
1504 /* was a function call */
1505 ast_expression *fun;
1506 ast_value *funval = NULL;
1510 size_t paramcount, i;
1512 fid = vec_last(sy->ops).off;
1513 vec_shrinkby(sy->ops, 1);
1515 /* out[fid] is the function
1516 * everything above is parameters...
1518 if (!vec_size(sy->argc)) {
1519 parseerror(parser, "internal error: no argument counter available");
1523 paramcount = vec_last(sy->argc);
1526 if (vec_size(sy->out) < fid) {
1527 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1528 (unsigned long)vec_size(sy->out),
1530 (unsigned long)paramcount);
1534 fun = sy->out[fid].out;
1536 if (fun == intrinsic_debug_typestring) {
1538 if (fid+2 != vec_size(sy->out) ||
1539 vec_last(sy->out).block)
1541 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1544 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1545 ast_unref(vec_last(sy->out).out);
1546 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1547 (ast_expression*)parser_const_string(parser, ty, false));
1548 vec_shrinkby(sy->out, 1);
1552 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1556 if (fid+1 < vec_size(sy->out))
1559 if (fid+1 + paramcount != vec_size(sy->out)) {
1560 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1561 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1565 for (i = 0; i < paramcount; ++i)
1566 vec_push(call->params, sy->out[fid+1 + i].out);
1567 vec_shrinkby(sy->out, paramcount);
1568 (void)!ast_call_check_types(call);
1569 if (parser->max_param_count < paramcount)
1570 parser->max_param_count = paramcount;
1572 if (ast_istype(fun, ast_value)) {
1573 funval = (ast_value*)fun;
1574 if ((fun->expression.flags & AST_FLAG_VARIADIC) &&
1575 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1577 call->va_count = (ast_expression*)parser_const_float(parser, (double)paramcount);
1581 /* overwrite fid, the function, with a call */
1582 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1584 if (fun->expression.vtype != TYPE_FUNCTION) {
1585 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1589 if (!fun->expression.next) {
1590 parseerror(parser, "could not determine function return type");
1593 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1595 if (fun->expression.flags & AST_FLAG_DEPRECATED) {
1597 return !parsewarning(parser, WARN_DEPRECATED,
1598 "call to function (which is marked deprecated)\n",
1599 "-> it has been declared here: %s:%i",
1600 ast_ctx(fun).file, ast_ctx(fun).line);
1603 return !parsewarning(parser, WARN_DEPRECATED,
1604 "call to `%s` (which is marked deprecated)\n"
1605 "-> `%s` declared here: %s:%i",
1606 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1608 return !parsewarning(parser, WARN_DEPRECATED,
1609 "call to `%s` (deprecated: %s)\n"
1610 "-> `%s` declared here: %s:%i",
1611 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1615 if (vec_size(fun->expression.params) != paramcount &&
1616 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1617 vec_size(fun->expression.params) < paramcount))
1619 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1621 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1622 "too %s parameters for call to %s: expected %i, got %i\n"
1623 " -> `%s` has been declared here: %s:%i",
1624 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1625 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1627 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1628 "too %s parameters for function call: expected %i, got %i\n"
1629 " -> it has been declared here: %s:%i",
1630 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1631 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1638 static bool parser_close_paren(parser_t *parser, shunt *sy)
1640 if (!vec_size(sy->ops)) {
1641 parseerror(parser, "unmatched closing paren");
1645 while (vec_size(sy->ops)) {
1646 if (vec_last(sy->ops).isparen) {
1647 if (vec_last(sy->paren) == PAREN_FUNC) {
1649 if (!parser_close_call(parser, sy))
1653 if (vec_last(sy->paren) == PAREN_EXPR) {
1655 if (!vec_size(sy->out)) {
1656 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1657 vec_shrinkby(sy->ops, 1);
1660 vec_shrinkby(sy->ops, 1);
1663 if (vec_last(sy->paren) == PAREN_INDEX) {
1665 /* pop off the parenthesis */
1666 vec_shrinkby(sy->ops, 1);
1667 /* then apply the index operator */
1668 if (!parser_sy_apply_operator(parser, sy))
1672 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1673 vec_last(sy->paren) = PAREN_TERNARY2;
1674 /* pop off the parenthesis */
1675 vec_shrinkby(sy->ops, 1);
1678 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1681 if (!parser_sy_apply_operator(parser, sy))
1687 static void parser_reclassify_token(parser_t *parser)
1690 for (i = 0; i < operator_count; ++i) {
1691 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1692 parser->tok = TOKEN_OPERATOR;
1698 static ast_expression* parse_vararg_do(parser_t *parser)
1700 ast_expression *idx, *out;
1702 ast_value *funtype = parser->function->vtype;
1704 lex_ctx ctx = parser_ctx(parser);
1706 if (!parser_next(parser) || parser->tok != '(') {
1707 parseerror(parser, "expected parameter index and type in parenthesis");
1710 if (!parser_next(parser)) {
1711 parseerror(parser, "error parsing parameter index");
1715 idx = parse_expression_leave(parser, true, false, false);
1719 if (parser->tok != ',') {
1721 parseerror(parser, "expected comma after parameter index");
1725 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1727 parseerror(parser, "expected typename for vararg");
1731 typevar = parse_typename(parser, NULL, NULL);
1737 if (parser->tok != ')') {
1739 ast_delete(typevar);
1740 parseerror(parser, "expected closing paren");
1745 if (!parser_next(parser)) {
1747 ast_delete(typevar);
1748 parseerror(parser, "parse error after vararg");
1753 if (!parser->function->varargs) {
1755 ast_delete(typevar);
1756 parseerror(parser, "function has no variable argument list");
1760 if (funtype->expression.varparam &&
1761 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1765 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1766 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1767 compile_error(ast_ctx(typevar),
1768 "function was declared to take varargs of type `%s`, requested type is: %s",
1772 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1773 ast_type_adopt(out, typevar);
1774 ast_delete(typevar);
1778 static ast_expression* parse_vararg(parser_t *parser)
1780 bool old_noops = parser->lex->flags.noops;
1782 ast_expression *out;
1784 parser->lex->flags.noops = true;
1785 out = parse_vararg_do(parser);
1787 parser->lex->flags.noops = old_noops;
1791 /* not to be exposed */
1792 extern bool ftepp_predef_exists(const char *name);
1794 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1796 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1797 parser->tok == TOKEN_IDENT &&
1798 !strcmp(parser_tokval(parser), "_"))
1800 /* a translatable string */
1803 parser->lex->flags.noops = true;
1804 if (!parser_next(parser) || parser->tok != '(') {
1805 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1808 parser->lex->flags.noops = false;
1809 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1810 parseerror(parser, "expected a constant string in translatable-string extension");
1813 val = parser_const_string(parser, parser_tokval(parser), true);
1816 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1818 if (!parser_next(parser) || parser->tok != ')') {
1819 parseerror(parser, "expected closing paren after translatable string");
1824 else if (parser->tok == TOKEN_DOTS)
1827 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1828 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1831 va = parse_vararg(parser);
1834 vec_push(sy->out, syexp(parser_ctx(parser), va));
1837 else if (parser->tok == TOKEN_FLOATCONST) {
1839 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1842 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1845 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1847 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1850 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1853 else if (parser->tok == TOKEN_STRINGCONST) {
1855 val = parser_const_string(parser, parser_tokval(parser), false);
1858 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1861 else if (parser->tok == TOKEN_VECTORCONST) {
1863 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1866 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1869 else if (parser->tok == TOKEN_IDENT)
1871 const char *ctoken = parser_tokval(parser);
1872 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1873 ast_expression *var;
1874 /* a_vector.{x,y,z} */
1875 if (!vec_size(sy->ops) ||
1876 !vec_last(sy->ops).etype ||
1877 operators[vec_last(sy->ops).etype-1].id != opid1('.') ||
1878 (prev >= intrinsic_debug_typestring &&
1879 prev <= intrinsic_debug_typestring))
1881 /* When adding more intrinsics, fix the above condition */
1884 if (prev && prev->expression.vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1886 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1888 var = parser_find_var(parser, parser_tokval(parser));
1890 var = parser_find_field(parser, parser_tokval(parser));
1892 if (!var && with_labels) {
1893 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1895 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1896 var = (ast_expression*)lbl;
1897 vec_push(parser->labels, lbl);
1900 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
1901 var = (ast_expression*)parser_const_string(parser, parser->function->name, false);
1904 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1905 var = (ast_expression*)intrinsic_debug_typestring;
1907 /* now we try for the real intrinsic hashtable. If the string
1908 * begins with __builtin, we simply skip past it, otherwise we
1909 * use the identifier as is.
1911 else if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
1912 var = intrin_func(parser, parser_tokval(parser) + 10 /* skip __builtin */);
1916 char *correct = NULL;
1920 * sometimes people use preprocessing predefs without enabling them
1921 * i've done this thousands of times already myself. Lets check for
1922 * it in the predef table. And diagnose it better :)
1924 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
1925 parseerror(parser, "unexpected ident: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1930 * TODO: determine the best score for the identifier: be it
1931 * a variable, a field.
1933 * We should also consider adding correction tables for
1934 * other things as well.
1936 if (OPTS_OPTION_BOOL(OPTION_CORRECTION)) {
1938 correct_init(&corr);
1940 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1941 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1942 if (strcmp(correct, parser_tokval(parser))) {
1944 } else if (correct) {
1949 correct_free(&corr);
1952 parseerror(parser, "unexpected ident: %s (did you mean %s?)", parser_tokval(parser), correct);
1957 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1963 if (ast_istype(var, ast_value)) {
1964 ((ast_value*)var)->uses++;
1966 else if (ast_istype(var, ast_member)) {
1967 ast_member *mem = (ast_member*)var;
1968 if (ast_istype(mem->owner, ast_value))
1969 ((ast_value*)(mem->owner))->uses++;
1972 vec_push(sy->out, syexp(parser_ctx(parser), var));
1975 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1979 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1981 ast_expression *expr = NULL;
1984 bool wantop = false;
1985 /* only warn once about an assignment in a truth value because the current code
1986 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1988 bool warn_truthvalue = true;
1990 /* count the parens because an if starts with one, so the
1991 * end of a condition is an unmatched closing paren
1995 memset(&sy, 0, sizeof(sy));
1997 parser->lex->flags.noops = false;
1999 parser_reclassify_token(parser);
2003 if (parser->tok == TOKEN_TYPENAME) {
2004 parseerror(parser, "unexpected typename");
2008 if (parser->tok == TOKEN_OPERATOR)
2010 /* classify the operator */
2011 const oper_info *op;
2012 const oper_info *olast = NULL;
2014 for (o = 0; o < operator_count; ++o) {
2015 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
2016 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
2017 !strcmp(parser_tokval(parser), operators[o].op))
2022 if (o == operator_count) {
2023 compile_error(parser_ctx(parser), "unknown operator: %s", parser_tokval(parser));
2026 /* found an operator */
2029 /* when declaring variables, a comma starts a new variable */
2030 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
2031 /* fixup the token */
2036 /* a colon without a pervious question mark cannot be a ternary */
2037 if (!ternaries && op->id == opid2(':','?')) {
2042 if (op->id == opid1(',')) {
2043 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2044 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
2048 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2049 olast = &operators[vec_last(sy.ops).etype-1];
2051 #define IsAssignOp(x) (\
2052 (x) == opid1('=') || \
2053 (x) == opid2('+','=') || \
2054 (x) == opid2('-','=') || \
2055 (x) == opid2('*','=') || \
2056 (x) == opid2('/','=') || \
2057 (x) == opid2('%','=') || \
2058 (x) == opid2('&','=') || \
2059 (x) == opid2('|','=') || \
2060 (x) == opid3('&','~','=') \
2062 if (warn_truthvalue) {
2063 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
2064 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
2065 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
2068 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
2069 warn_truthvalue = false;
2074 (op->prec < olast->prec) ||
2075 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
2077 if (!parser_sy_apply_operator(parser, &sy))
2079 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2080 olast = &operators[vec_last(sy.ops).etype-1];
2085 if (op->id == opid1('(')) {
2087 size_t sycount = vec_size(sy.out);
2088 /* we expected an operator, this is the function-call operator */
2089 vec_push(sy.paren, PAREN_FUNC);
2090 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
2091 vec_push(sy.argc, 0);
2093 vec_push(sy.paren, PAREN_EXPR);
2094 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2097 } else if (op->id == opid1('[')) {
2099 parseerror(parser, "unexpected array subscript");
2102 vec_push(sy.paren, PAREN_INDEX);
2103 /* push both the operator and the paren, this makes life easier */
2104 vec_push(sy.ops, syop(parser_ctx(parser), op));
2105 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2107 } else if (op->id == opid2('?',':')) {
2108 vec_push(sy.ops, syop(parser_ctx(parser), op));
2109 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2112 vec_push(sy.paren, PAREN_TERNARY1);
2113 } else if (op->id == opid2(':','?')) {
2114 if (!vec_size(sy.paren)) {
2115 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2118 if (vec_last(sy.paren) != PAREN_TERNARY1) {
2119 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2122 if (!parser_close_paren(parser, &sy))
2124 vec_push(sy.ops, syop(parser_ctx(parser), op));
2128 vec_push(sy.ops, syop(parser_ctx(parser), op));
2129 wantop = !!(op->flags & OP_SUFFIX);
2132 else if (parser->tok == ')') {
2133 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2134 if (!parser_sy_apply_operator(parser, &sy))
2137 if (!vec_size(sy.paren))
2140 if (vec_last(sy.paren) == PAREN_TERNARY1) {
2141 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
2144 if (!parser_close_paren(parser, &sy))
2147 /* must be a function call without parameters */
2148 if (vec_last(sy.paren) != PAREN_FUNC) {
2149 parseerror(parser, "closing paren in invalid position");
2152 if (!parser_close_paren(parser, &sy))
2157 else if (parser->tok == '(') {
2158 parseerror(parser, "internal error: '(' should be classified as operator");
2161 else if (parser->tok == '[') {
2162 parseerror(parser, "internal error: '[' should be classified as operator");
2165 else if (parser->tok == ']') {
2166 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2167 if (!parser_sy_apply_operator(parser, &sy))
2170 if (!vec_size(sy.paren))
2172 if (vec_last(sy.paren) != PAREN_INDEX) {
2173 parseerror(parser, "mismatched parentheses, unexpected ']'");
2176 if (!parser_close_paren(parser, &sy))
2181 if (!parse_sya_operand(parser, &sy, with_labels))
2184 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
2185 vec_last(sy.argc)++;
2190 /* in this case we might want to allow constant string concatenation */
2191 bool concatenated = false;
2192 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
2193 ast_expression *lexpr = vec_last(sy.out).out;
2194 if (ast_istype(lexpr, ast_value)) {
2195 ast_value *last = (ast_value*)lexpr;
2196 if (last->isimm == true && last->cvq == CV_CONST &&
2197 last->hasvalue && last->expression.vtype == TYPE_STRING)
2199 char *newstr = NULL;
2200 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
2201 vec_last(sy.out).out = (ast_expression*)parser_const_string(parser, newstr, false);
2203 concatenated = true;
2207 if (!concatenated) {
2208 parseerror(parser, "expected operator or end of statement");
2213 if (!parser_next(parser)) {
2216 if (parser->tok == ';' ||
2217 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
2218 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
2224 while (vec_size(sy.ops)) {
2225 if (!parser_sy_apply_operator(parser, &sy))
2229 parser->lex->flags.noops = true;
2230 if (!vec_size(sy.out)) {
2231 parseerror(parser, "empty expression");
2234 expr = sy.out[0].out;
2237 if (vec_size(sy.paren)) {
2238 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
2246 parser->lex->flags.noops = true;
2247 for (i = 0; i < vec_size(sy.out); ++i) {
2249 ast_unref(sy.out[i].out);
2258 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
2260 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
2263 if (parser->tok != ';') {
2264 parseerror(parser, "semicolon expected after expression");
2268 if (!parser_next(parser)) {
2275 static void parser_enterblock(parser_t *parser)
2277 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2278 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2279 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2280 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2281 vec_push(parser->_block_ctx, parser_ctx(parser));
2284 vec_push(parser->correct_variables, correct_trie_new());
2285 vec_push(parser->correct_variables_score, NULL);
2288 static bool parser_leaveblock(parser_t *parser)
2291 size_t locals, typedefs;
2293 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2294 parseerror(parser, "internal error: parser_leaveblock with no block");
2298 util_htdel(vec_last(parser->variables));
2299 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2301 vec_pop(parser->variables);
2302 vec_pop(parser->correct_variables);
2303 vec_pop(parser->correct_variables_score);
2304 if (!vec_size(parser->_blocklocals)) {
2305 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2309 locals = vec_last(parser->_blocklocals);
2310 vec_pop(parser->_blocklocals);
2311 while (vec_size(parser->_locals) != locals) {
2312 ast_expression *e = vec_last(parser->_locals);
2313 ast_value *v = (ast_value*)e;
2314 vec_pop(parser->_locals);
2315 if (ast_istype(e, ast_value) && !v->uses) {
2316 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2321 typedefs = vec_last(parser->_blocktypedefs);
2322 while (vec_size(parser->_typedefs) != typedefs) {
2323 ast_delete(vec_last(parser->_typedefs));
2324 vec_pop(parser->_typedefs);
2326 util_htdel(vec_last(parser->typedefs));
2327 vec_pop(parser->typedefs);
2329 vec_pop(parser->_block_ctx);
2334 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2336 vec_push(parser->_locals, e);
2337 util_htset(vec_last(parser->variables), name, (void*)e);
2341 vec_last(parser->correct_variables),
2342 &vec_last(parser->correct_variables_score),
2347 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2349 vec_push(parser->globals, e);
2350 util_htset(parser->htglobals, name, e);
2354 parser->correct_variables[0],
2355 &parser->correct_variables_score[0],
2360 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2364 ast_expression *prev;
2366 if (cond->expression.vtype == TYPE_VOID || cond->expression.vtype >= TYPE_VARIANT) {
2368 ast_type_to_string(cond, ty, sizeof(ty));
2369 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2372 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
2375 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2378 parseerror(parser, "internal error: failed to process condition");
2383 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
2385 /* vector types need to be cast to true booleans */
2386 ast_binary *bin = (ast_binary*)cond;
2387 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2389 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2391 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2394 parseerror(parser, "internal error: failed to process condition");
2401 unary = (ast_unary*)cond;
2402 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2404 cond = unary->operand;
2405 unary->operand = NULL;
2408 unary = (ast_unary*)cond;
2412 parseerror(parser, "internal error: failed to process condition");
2414 if (ifnot) *_ifnot = !*_ifnot;
2418 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2421 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2424 lex_ctx ctx = parser_ctx(parser);
2426 (void)block; /* not touching */
2428 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2429 if (!parser_next(parser)) {
2430 parseerror(parser, "expected condition or 'not'");
2433 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2435 if (!parser_next(parser)) {
2436 parseerror(parser, "expected condition in parenthesis");
2440 if (parser->tok != '(') {
2441 parseerror(parser, "expected 'if' condition in parenthesis");
2444 /* parse into the expression */
2445 if (!parser_next(parser)) {
2446 parseerror(parser, "expected 'if' condition after opening paren");
2449 /* parse the condition */
2450 cond = parse_expression_leave(parser, false, true, false);
2454 if (parser->tok != ')') {
2455 parseerror(parser, "expected closing paren after 'if' condition");
2459 /* parse into the 'then' branch */
2460 if (!parser_next(parser)) {
2461 parseerror(parser, "expected statement for on-true branch of 'if'");
2465 if (!parse_statement_or_block(parser, &ontrue)) {
2470 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2471 /* check for an else */
2472 if (!strcmp(parser_tokval(parser), "else")) {
2473 /* parse into the 'else' branch */
2474 if (!parser_next(parser)) {
2475 parseerror(parser, "expected on-false branch after 'else'");
2480 if (!parse_statement_or_block(parser, &onfalse)) {
2487 cond = process_condition(parser, cond, &ifnot);
2489 if (ontrue) ast_delete(ontrue);
2490 if (onfalse) ast_delete(onfalse);
2495 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2497 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2498 *out = (ast_expression*)ifthen;
2502 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2503 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2508 /* skip the 'while' and get the body */
2509 if (!parser_next(parser)) {
2510 if (OPTS_FLAG(LOOP_LABELS))
2511 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2513 parseerror(parser, "expected 'while' condition in parenthesis");
2517 if (parser->tok == ':') {
2518 if (!OPTS_FLAG(LOOP_LABELS))
2519 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2520 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2521 parseerror(parser, "expected loop label");
2524 label = util_strdup(parser_tokval(parser));
2525 if (!parser_next(parser)) {
2527 parseerror(parser, "expected 'while' condition in parenthesis");
2532 if (parser->tok != '(') {
2533 parseerror(parser, "expected 'while' condition in parenthesis");
2537 vec_push(parser->breaks, label);
2538 vec_push(parser->continues, label);
2540 rv = parse_while_go(parser, block, out);
2543 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2544 parseerror(parser, "internal error: label stack corrupted");
2550 vec_pop(parser->breaks);
2551 vec_pop(parser->continues);
2556 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2559 ast_expression *cond, *ontrue;
2563 lex_ctx ctx = parser_ctx(parser);
2565 (void)block; /* not touching */
2567 /* parse into the expression */
2568 if (!parser_next(parser)) {
2569 parseerror(parser, "expected 'while' condition after opening paren");
2572 /* parse the condition */
2573 cond = parse_expression_leave(parser, false, true, false);
2577 if (parser->tok != ')') {
2578 parseerror(parser, "expected closing paren after 'while' condition");
2582 /* parse into the 'then' branch */
2583 if (!parser_next(parser)) {
2584 parseerror(parser, "expected while-loop body");
2588 if (!parse_statement_or_block(parser, &ontrue)) {
2593 cond = process_condition(parser, cond, &ifnot);
2598 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2599 *out = (ast_expression*)aloop;
2603 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2604 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2609 /* skip the 'do' and get the body */
2610 if (!parser_next(parser)) {
2611 if (OPTS_FLAG(LOOP_LABELS))
2612 parseerror(parser, "expected loop label or body");
2614 parseerror(parser, "expected loop body");
2618 if (parser->tok == ':') {
2619 if (!OPTS_FLAG(LOOP_LABELS))
2620 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2621 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2622 parseerror(parser, "expected loop label");
2625 label = util_strdup(parser_tokval(parser));
2626 if (!parser_next(parser)) {
2628 parseerror(parser, "expected loop body");
2633 vec_push(parser->breaks, label);
2634 vec_push(parser->continues, label);
2636 rv = parse_dowhile_go(parser, block, out);
2639 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2640 parseerror(parser, "internal error: label stack corrupted");
2646 vec_pop(parser->breaks);
2647 vec_pop(parser->continues);
2652 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2655 ast_expression *cond, *ontrue;
2659 lex_ctx ctx = parser_ctx(parser);
2661 (void)block; /* not touching */
2663 if (!parse_statement_or_block(parser, &ontrue))
2666 /* expect the "while" */
2667 if (parser->tok != TOKEN_KEYWORD ||
2668 strcmp(parser_tokval(parser), "while"))
2670 parseerror(parser, "expected 'while' and condition");
2675 /* skip the 'while' and check for opening paren */
2676 if (!parser_next(parser) || parser->tok != '(') {
2677 parseerror(parser, "expected 'while' condition in parenthesis");
2681 /* parse into the expression */
2682 if (!parser_next(parser)) {
2683 parseerror(parser, "expected 'while' condition after opening paren");
2687 /* parse the condition */
2688 cond = parse_expression_leave(parser, false, true, false);
2692 if (parser->tok != ')') {
2693 parseerror(parser, "expected closing paren after 'while' condition");
2699 if (!parser_next(parser) || parser->tok != ';') {
2700 parseerror(parser, "expected semicolon after condition");
2706 if (!parser_next(parser)) {
2707 parseerror(parser, "parse error");
2713 cond = process_condition(parser, cond, &ifnot);
2718 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2719 *out = (ast_expression*)aloop;
2723 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2724 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2729 /* skip the 'for' and check for opening paren */
2730 if (!parser_next(parser)) {
2731 if (OPTS_FLAG(LOOP_LABELS))
2732 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2734 parseerror(parser, "expected 'for' expressions in parenthesis");
2738 if (parser->tok == ':') {
2739 if (!OPTS_FLAG(LOOP_LABELS))
2740 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2741 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2742 parseerror(parser, "expected loop label");
2745 label = util_strdup(parser_tokval(parser));
2746 if (!parser_next(parser)) {
2748 parseerror(parser, "expected 'for' expressions in parenthesis");
2753 if (parser->tok != '(') {
2754 parseerror(parser, "expected 'for' expressions in parenthesis");
2758 vec_push(parser->breaks, label);
2759 vec_push(parser->continues, label);
2761 rv = parse_for_go(parser, block, out);
2764 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2765 parseerror(parser, "internal error: label stack corrupted");
2771 vec_pop(parser->breaks);
2772 vec_pop(parser->continues);
2776 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2779 ast_expression *initexpr, *cond, *increment, *ontrue;
2785 lex_ctx ctx = parser_ctx(parser);
2787 parser_enterblock(parser);
2794 /* parse into the expression */
2795 if (!parser_next(parser)) {
2796 parseerror(parser, "expected 'for' initializer after opening paren");
2801 if (parser->tok == TOKEN_IDENT)
2802 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2804 if (typevar || parser->tok == TOKEN_TYPENAME) {
2806 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2807 if (parsewarning(parser, WARN_EXTENSIONS,
2808 "current standard does not allow variable declarations in for-loop initializers"))
2812 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2815 else if (parser->tok != ';')
2817 initexpr = parse_expression_leave(parser, false, false, false);
2822 /* move on to condition */
2823 if (parser->tok != ';') {
2824 parseerror(parser, "expected semicolon after for-loop initializer");
2827 if (!parser_next(parser)) {
2828 parseerror(parser, "expected for-loop condition");
2832 /* parse the condition */
2833 if (parser->tok != ';') {
2834 cond = parse_expression_leave(parser, false, true, false);
2839 /* move on to incrementor */
2840 if (parser->tok != ';') {
2841 parseerror(parser, "expected semicolon after for-loop initializer");
2844 if (!parser_next(parser)) {
2845 parseerror(parser, "expected for-loop condition");
2849 /* parse the incrementor */
2850 if (parser->tok != ')') {
2851 lex_ctx condctx = parser_ctx(parser);
2852 increment = parse_expression_leave(parser, false, false, false);
2855 if (!ast_side_effects(increment)) {
2856 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2862 if (parser->tok != ')') {
2863 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2866 /* parse into the 'then' branch */
2867 if (!parser_next(parser)) {
2868 parseerror(parser, "expected for-loop body");
2871 if (!parse_statement_or_block(parser, &ontrue))
2875 cond = process_condition(parser, cond, &ifnot);
2879 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2880 *out = (ast_expression*)aloop;
2882 if (!parser_leaveblock(parser))
2886 if (initexpr) ast_delete(initexpr);
2887 if (cond) ast_delete(cond);
2888 if (increment) ast_delete(increment);
2889 (void)!parser_leaveblock(parser);
2893 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2895 ast_expression *exp = NULL;
2896 ast_return *ret = NULL;
2897 ast_value *expected = parser->function->vtype;
2899 lex_ctx ctx = parser_ctx(parser);
2901 (void)block; /* not touching */
2903 if (!parser_next(parser)) {
2904 parseerror(parser, "expected return expression");
2908 if (parser->tok != ';') {
2909 exp = parse_expression(parser, false, false);
2913 if (exp->expression.vtype != TYPE_NIL &&
2914 exp->expression.vtype != expected->expression.next->expression.vtype)
2916 parseerror(parser, "return with invalid expression");
2919 ret = ast_return_new(ctx, exp);
2925 if (!parser_next(parser))
2926 parseerror(parser, "parse error");
2927 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2928 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2930 ret = ast_return_new(ctx, NULL);
2932 *out = (ast_expression*)ret;
2936 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2939 unsigned int levels = 0;
2940 lex_ctx ctx = parser_ctx(parser);
2941 const char **loops = (is_continue ? parser->continues : parser->breaks);
2943 (void)block; /* not touching */
2944 if (!parser_next(parser)) {
2945 parseerror(parser, "expected semicolon or loop label");
2949 if (!vec_size(loops)) {
2951 parseerror(parser, "`continue` can only be used inside loops");
2953 parseerror(parser, "`break` can only be used inside loops or switches");
2956 if (parser->tok == TOKEN_IDENT) {
2957 if (!OPTS_FLAG(LOOP_LABELS))
2958 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2959 i = vec_size(loops);
2961 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2964 parseerror(parser, "no such loop to %s: `%s`",
2965 (is_continue ? "continue" : "break out of"),
2966 parser_tokval(parser));
2971 if (!parser_next(parser)) {
2972 parseerror(parser, "expected semicolon");
2977 if (parser->tok != ';') {
2978 parseerror(parser, "expected semicolon");
2982 if (!parser_next(parser))
2983 parseerror(parser, "parse error");
2985 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2989 /* returns true when it was a variable qualifier, false otherwise!
2990 * on error, cvq is set to CV_WRONG
2992 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2994 bool had_const = false;
2995 bool had_var = false;
2996 bool had_noref = false;
2997 bool had_attrib = false;
2998 bool had_static = false;
3003 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
3005 /* parse an attribute */
3006 if (!parser_next(parser)) {
3007 parseerror(parser, "expected attribute after `[[`");
3011 if (!strcmp(parser_tokval(parser), "noreturn")) {
3012 flags |= AST_FLAG_NORETURN;
3013 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3014 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
3019 else if (!strcmp(parser_tokval(parser), "noref")) {
3021 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3022 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
3027 else if (!strcmp(parser_tokval(parser), "inline")) {
3028 flags |= AST_FLAG_INLINE;
3029 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3030 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
3035 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
3036 flags |= AST_FLAG_ALIAS;
3039 if (!parser_next(parser)) {
3040 parseerror(parser, "parse error in attribute");
3044 if (parser->tok == '(') {
3045 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
3046 parseerror(parser, "`alias` attribute missing parameter");
3050 *message = util_strdup(parser_tokval(parser));
3052 if (!parser_next(parser)) {
3053 parseerror(parser, "parse error in attribute");
3057 if (parser->tok != ')') {
3058 parseerror(parser, "`alias` attribute expected `)` after parameter");
3062 if (!parser_next(parser)) {
3063 parseerror(parser, "parse error in attribute");
3068 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3069 parseerror(parser, "`alias` attribute expected `]]`");
3073 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
3074 flags |= AST_FLAG_DEPRECATED;
3077 if (!parser_next(parser)) {
3078 parseerror(parser, "parse error in attribute");
3082 if (parser->tok == '(') {
3083 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
3084 parseerror(parser, "`deprecated` attribute missing parameter");
3088 *message = util_strdup(parser_tokval(parser));
3090 if (!parser_next(parser)) {
3091 parseerror(parser, "parse error in attribute");
3095 if(parser->tok != ')') {
3096 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
3100 if (!parser_next(parser)) {
3101 parseerror(parser, "parse error in attribute");
3106 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3107 parseerror(parser, "`deprecated` attribute expected `]]`");
3110 if (*message) mem_d(*message);
3118 /* Skip tokens until we hit a ]] */
3119 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
3120 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3121 if (!parser_next(parser)) {
3122 parseerror(parser, "error inside attribute");
3129 else if (with_local && !strcmp(parser_tokval(parser), "static"))
3131 else if (!strcmp(parser_tokval(parser), "const"))
3133 else if (!strcmp(parser_tokval(parser), "var"))
3135 else if (with_local && !strcmp(parser_tokval(parser), "local"))
3137 else if (!strcmp(parser_tokval(parser), "noref"))
3139 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
3144 if (!parser_next(parser))
3154 *is_static = had_static;
3158 parseerror(parser, "parse error after variable qualifier");
3163 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
3164 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
3169 /* skip the 'while' and get the body */
3170 if (!parser_next(parser)) {
3171 if (OPTS_FLAG(LOOP_LABELS))
3172 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
3174 parseerror(parser, "expected 'switch' operand in parenthesis");
3178 if (parser->tok == ':') {
3179 if (!OPTS_FLAG(LOOP_LABELS))
3180 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3181 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3182 parseerror(parser, "expected loop label");
3185 label = util_strdup(parser_tokval(parser));
3186 if (!parser_next(parser)) {
3188 parseerror(parser, "expected 'switch' operand in parenthesis");
3193 if (parser->tok != '(') {
3194 parseerror(parser, "expected 'switch' operand in parenthesis");
3198 vec_push(parser->breaks, label);
3200 rv = parse_switch_go(parser, block, out);
3203 if (vec_last(parser->breaks) != label) {
3204 parseerror(parser, "internal error: label stack corrupted");
3210 vec_pop(parser->breaks);
3215 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3217 ast_expression *operand;
3220 ast_switch *switchnode;
3221 ast_switch_case swcase;
3224 bool noref, is_static;
3225 uint32_t qflags = 0;
3227 lex_ctx ctx = parser_ctx(parser);
3229 (void)block; /* not touching */
3232 /* parse into the expression */
3233 if (!parser_next(parser)) {
3234 parseerror(parser, "expected switch operand");
3237 /* parse the operand */
3238 operand = parse_expression_leave(parser, false, false, false);
3242 switchnode = ast_switch_new(ctx, operand);
3245 if (parser->tok != ')') {
3246 ast_delete(switchnode);
3247 parseerror(parser, "expected closing paren after 'switch' operand");
3251 /* parse over the opening paren */
3252 if (!parser_next(parser) || parser->tok != '{') {
3253 ast_delete(switchnode);
3254 parseerror(parser, "expected list of cases");
3258 if (!parser_next(parser)) {
3259 ast_delete(switchnode);
3260 parseerror(parser, "expected 'case' or 'default'");
3264 /* new block; allow some variables to be declared here */
3265 parser_enterblock(parser);
3268 if (parser->tok == TOKEN_IDENT)
3269 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3270 if (typevar || parser->tok == TOKEN_TYPENAME) {
3271 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3272 ast_delete(switchnode);
3277 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3279 if (cvq == CV_WRONG) {
3280 ast_delete(switchnode);
3283 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3284 ast_delete(switchnode);
3293 while (parser->tok != '}') {
3294 ast_block *caseblock;
3296 if (!strcmp(parser_tokval(parser), "case")) {
3297 if (!parser_next(parser)) {
3298 ast_delete(switchnode);
3299 parseerror(parser, "expected expression for case");
3302 swcase.value = parse_expression_leave(parser, false, false, false);
3303 if (!swcase.value) {
3304 ast_delete(switchnode);
3305 parseerror(parser, "expected expression for case");
3308 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3309 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3310 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3316 else if (!strcmp(parser_tokval(parser), "default")) {
3317 swcase.value = NULL;
3318 if (!parser_next(parser)) {
3319 ast_delete(switchnode);
3320 parseerror(parser, "expected colon");
3325 ast_delete(switchnode);
3326 parseerror(parser, "expected 'case' or 'default'");
3330 /* Now the colon and body */
3331 if (parser->tok != ':') {
3332 if (swcase.value) ast_unref(swcase.value);
3333 ast_delete(switchnode);
3334 parseerror(parser, "expected colon");
3338 if (!parser_next(parser)) {
3339 if (swcase.value) ast_unref(swcase.value);
3340 ast_delete(switchnode);
3341 parseerror(parser, "expected statements or case");
3344 caseblock = ast_block_new(parser_ctx(parser));
3346 if (swcase.value) ast_unref(swcase.value);
3347 ast_delete(switchnode);
3350 swcase.code = (ast_expression*)caseblock;
3351 vec_push(switchnode->cases, swcase);
3353 ast_expression *expr;
3354 if (parser->tok == '}')
3356 if (parser->tok == TOKEN_KEYWORD) {
3357 if (!strcmp(parser_tokval(parser), "case") ||
3358 !strcmp(parser_tokval(parser), "default"))
3363 if (!parse_statement(parser, caseblock, &expr, true)) {
3364 ast_delete(switchnode);
3369 if (!ast_block_add_expr(caseblock, expr)) {
3370 ast_delete(switchnode);
3376 parser_leaveblock(parser);
3379 if (parser->tok != '}') {
3380 ast_delete(switchnode);
3381 parseerror(parser, "expected closing paren of case list");
3384 if (!parser_next(parser)) {
3385 ast_delete(switchnode);
3386 parseerror(parser, "parse error after switch");
3389 *out = (ast_expression*)switchnode;
3393 /* parse computed goto sides */
3394 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3395 ast_expression *on_true;
3396 ast_expression *on_false;
3397 ast_expression *cond;
3402 if (ast_istype(*side, ast_ternary)) {
3403 ast_ternary *tern = (ast_ternary*)*side;
3404 on_true = parse_goto_computed(parser, &tern->on_true);
3405 on_false = parse_goto_computed(parser, &tern->on_false);
3407 if (!on_true || !on_false) {
3408 parseerror(parser, "expected label or expression in ternary");
3409 if (on_true) ast_unref(on_true);
3410 if (on_false) ast_unref(on_false);
3418 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3419 } else if (ast_istype(*side, ast_label)) {
3420 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3421 ast_goto_set_label(gt, ((ast_label*)*side));
3423 return (ast_expression*)gt;
3428 static bool parse_goto(parser_t *parser, ast_expression **out)
3430 ast_goto *gt = NULL;
3431 ast_expression *lbl;
3433 if (!parser_next(parser))
3436 if (parser->tok != TOKEN_IDENT) {
3437 ast_expression *expression;
3439 /* could be an expression i.e computed goto :-) */
3440 if (parser->tok != '(') {
3441 parseerror(parser, "expected label name after `goto`");
3445 /* failed to parse expression for goto */
3446 if (!(expression = parse_expression(parser, false, true)) ||
3447 !(*out = parse_goto_computed(parser, &expression))) {
3448 parseerror(parser, "invalid goto expression");
3449 ast_unref(expression);
3456 /* not computed goto */
3457 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3458 lbl = parser_find_label(parser, gt->name);
3460 if (!ast_istype(lbl, ast_label)) {
3461 parseerror(parser, "internal error: label is not an ast_label");
3465 ast_goto_set_label(gt, (ast_label*)lbl);
3468 vec_push(parser->gotos, gt);
3470 if (!parser_next(parser) || parser->tok != ';') {
3471 parseerror(parser, "semicolon expected after goto label");
3474 if (!parser_next(parser)) {
3475 parseerror(parser, "parse error after goto");
3479 *out = (ast_expression*)gt;
3483 static bool parse_skipwhite(parser_t *parser)
3486 if (!parser_next(parser))
3488 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3489 return parser->tok < TOKEN_ERROR;
3492 static bool parse_eol(parser_t *parser)
3494 if (!parse_skipwhite(parser))
3496 return parser->tok == TOKEN_EOL;
3499 static bool parse_pragma_do(parser_t *parser)
3501 if (!parser_next(parser) ||
3502 parser->tok != TOKEN_IDENT ||
3503 strcmp(parser_tokval(parser), "pragma"))
3505 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3508 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3509 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3513 if (!strcmp(parser_tokval(parser), "noref")) {
3514 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3515 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3518 parser->noref = !!parser_token(parser)->constval.i;
3519 if (!parse_eol(parser)) {
3520 parseerror(parser, "parse error after `noref` pragma");
3526 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3533 static bool parse_pragma(parser_t *parser)
3536 parser->lex->flags.preprocessing = true;
3537 parser->lex->flags.mergelines = true;
3538 rv = parse_pragma_do(parser);
3539 if (parser->tok != TOKEN_EOL) {
3540 parseerror(parser, "junk after pragma");
3543 parser->lex->flags.preprocessing = false;
3544 parser->lex->flags.mergelines = false;
3545 if (!parser_next(parser)) {
3546 parseerror(parser, "parse error after pragma");
3552 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3554 bool noref, is_static;
3556 uint32_t qflags = 0;
3557 ast_value *typevar = NULL;
3558 char *vstring = NULL;
3562 if (parser->tok == TOKEN_IDENT)
3563 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3565 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3567 /* local variable */
3569 parseerror(parser, "cannot declare a variable from here");
3572 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3573 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3576 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3580 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3582 if (cvq == CV_WRONG)
3584 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3586 else if (parser->tok == TOKEN_KEYWORD)
3588 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3593 if (!parser_next(parser)) {
3594 parseerror(parser, "parse error after __builtin_debug_printtype");
3598 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3600 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3601 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3602 if (!parser_next(parser)) {
3603 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3609 if (!parse_statement(parser, block, out, allow_cases))
3612 con_out("__builtin_debug_printtype: got no output node\n");
3615 ast_type_to_string(*out, ty, sizeof(ty));
3616 con_out("__builtin_debug_printtype: `%s`\n", ty);
3621 else if (!strcmp(parser_tokval(parser), "return"))
3623 return parse_return(parser, block, out);
3625 else if (!strcmp(parser_tokval(parser), "if"))
3627 return parse_if(parser, block, out);
3629 else if (!strcmp(parser_tokval(parser), "while"))
3631 return parse_while(parser, block, out);
3633 else if (!strcmp(parser_tokval(parser), "do"))
3635 return parse_dowhile(parser, block, out);
3637 else if (!strcmp(parser_tokval(parser), "for"))
3639 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3640 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3643 return parse_for(parser, block, out);
3645 else if (!strcmp(parser_tokval(parser), "break"))
3647 return parse_break_continue(parser, block, out, false);
3649 else if (!strcmp(parser_tokval(parser), "continue"))
3651 return parse_break_continue(parser, block, out, true);
3653 else if (!strcmp(parser_tokval(parser), "switch"))
3655 return parse_switch(parser, block, out);
3657 else if (!strcmp(parser_tokval(parser), "case") ||
3658 !strcmp(parser_tokval(parser), "default"))
3661 parseerror(parser, "unexpected 'case' label");
3666 else if (!strcmp(parser_tokval(parser), "goto"))
3668 return parse_goto(parser, out);
3670 else if (!strcmp(parser_tokval(parser), "typedef"))
3672 if (!parser_next(parser)) {
3673 parseerror(parser, "expected type definition after 'typedef'");
3676 return parse_typedef(parser);
3678 parseerror(parser, "Unexpected keyword");
3681 else if (parser->tok == '{')
3684 inner = parse_block(parser);
3687 *out = (ast_expression*)inner;
3690 else if (parser->tok == ':')
3694 if (!parser_next(parser)) {
3695 parseerror(parser, "expected label name");
3698 if (parser->tok != TOKEN_IDENT) {
3699 parseerror(parser, "label must be an identifier");
3702 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3704 if (!label->undefined) {
3705 parseerror(parser, "label `%s` already defined", label->name);
3708 label->undefined = false;
3711 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3712 vec_push(parser->labels, label);
3714 *out = (ast_expression*)label;
3715 if (!parser_next(parser)) {
3716 parseerror(parser, "parse error after label");
3719 for (i = 0; i < vec_size(parser->gotos); ++i) {
3720 if (!strcmp(parser->gotos[i]->name, label->name)) {
3721 ast_goto_set_label(parser->gotos[i], label);
3722 vec_remove(parser->gotos, i, 1);
3728 else if (parser->tok == ';')
3730 if (!parser_next(parser)) {
3731 parseerror(parser, "parse error after empty statement");
3738 lex_ctx ctx = parser_ctx(parser);
3739 ast_expression *exp = parse_expression(parser, false, false);
3743 if (!ast_side_effects(exp)) {
3744 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3751 static bool parse_enum(parser_t *parser)
3754 bool reverse = false;
3756 ast_value **values = NULL;
3757 ast_value *var = NULL;
3760 ast_expression *old;
3762 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3763 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3767 /* enumeration attributes (can add more later) */
3768 if (parser->tok == ':') {
3769 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3770 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3775 if (!strcmp(parser_tokval(parser), "flag")) {
3779 else if (!strcmp(parser_tokval(parser), "reverse")) {
3783 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3787 if (!parser_next(parser) || parser->tok != '{') {
3788 parseerror(parser, "expected `{` after enum attribute ");
3794 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3795 if (parser->tok == '}') {
3796 /* allow an empty enum */
3799 parseerror(parser, "expected identifier or `}`");
3803 old = parser_find_field(parser, parser_tokval(parser));
3805 old = parser_find_global(parser, parser_tokval(parser));
3807 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3808 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3812 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3813 vec_push(values, var);
3814 var->cvq = CV_CONST;
3815 var->hasvalue = true;
3817 /* for flagged enumerations increment in POTs of TWO */
3818 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3819 parser_addglobal(parser, var->name, (ast_expression*)var);
3821 if (!parser_next(parser)) {
3822 parseerror(parser, "expected `=`, `}` or comma after identifier");
3826 if (parser->tok == ',')
3828 if (parser->tok == '}')
3830 if (parser->tok != '=') {
3831 parseerror(parser, "expected `=`, `}` or comma after identifier");
3835 if (!parser_next(parser)) {
3836 parseerror(parser, "expected expression after `=`");
3840 /* We got a value! */
3841 old = parse_expression_leave(parser, true, false, false);
3842 asvalue = (ast_value*)old;
3843 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3844 compile_error(ast_ctx(var), "constant value or expression expected");
3847 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3849 if (parser->tok == '}')
3851 if (parser->tok != ',') {
3852 parseerror(parser, "expected `}` or comma after expression");
3857 /* patch them all (for reversed attribute) */
3860 for (i = 0; i < vec_size(values); i++)
3861 values[i]->constval.vfloat = vec_size(values) - i - 1;
3864 if (parser->tok != '}') {
3865 parseerror(parser, "internal error: breaking without `}`");
3869 if (!parser_next(parser) || parser->tok != ';') {
3870 parseerror(parser, "expected semicolon after enumeration");
3874 if (!parser_next(parser)) {
3875 parseerror(parser, "parse error after enumeration");
3887 static bool parse_block_into(parser_t *parser, ast_block *block)
3891 parser_enterblock(parser);
3893 if (!parser_next(parser)) { /* skip the '{' */
3894 parseerror(parser, "expected function body");
3898 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3900 ast_expression *expr = NULL;
3901 if (parser->tok == '}')
3904 if (!parse_statement(parser, block, &expr, false)) {
3905 /* parseerror(parser, "parse error"); */
3911 if (!ast_block_add_expr(block, expr)) {
3918 if (parser->tok != '}') {
3921 (void)parser_next(parser);
3925 if (!parser_leaveblock(parser))
3927 return retval && !!block;
3930 static ast_block* parse_block(parser_t *parser)
3933 block = ast_block_new(parser_ctx(parser));
3936 if (!parse_block_into(parser, block)) {
3937 ast_block_delete(block);
3943 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3945 if (parser->tok == '{') {
3946 *out = (ast_expression*)parse_block(parser);
3949 return parse_statement(parser, NULL, out, false);
3952 static bool create_vector_members(ast_value *var, ast_member **me)
3955 size_t len = strlen(var->name);
3957 for (i = 0; i < 3; ++i) {
3958 char *name = (char*)mem_a(len+3);
3959 memcpy(name, var->name, len);
3961 name[len+1] = 'x'+i;
3963 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3972 do { ast_member_delete(me[--i]); } while(i);
3976 static bool parse_function_body(parser_t *parser, ast_value *var)
3978 ast_block *block = NULL;
3983 ast_expression *framenum = NULL;
3984 ast_expression *nextthink = NULL;
3985 /* None of the following have to be deleted */
3986 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3987 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3988 bool has_frame_think;
3992 has_frame_think = false;
3993 old = parser->function;
3995 if (var->expression.flags & AST_FLAG_ALIAS) {
3996 parseerror(parser, "function aliases cannot have bodies");
4000 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
4001 parseerror(parser, "gotos/labels leaking");
4005 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4006 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
4007 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
4013 if (parser->tok == '[') {
4014 /* got a frame definition: [ framenum, nextthink ]
4015 * this translates to:
4016 * self.frame = framenum;
4017 * self.nextthink = time + 0.1;
4018 * self.think = nextthink;
4022 fld_think = parser_find_field(parser, "think");
4023 fld_nextthink = parser_find_field(parser, "nextthink");
4024 fld_frame = parser_find_field(parser, "frame");
4025 if (!fld_think || !fld_nextthink || !fld_frame) {
4026 parseerror(parser, "cannot use [frame,think] notation without the required fields");
4027 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
4030 gbl_time = parser_find_global(parser, "time");
4031 gbl_self = parser_find_global(parser, "self");
4032 if (!gbl_time || !gbl_self) {
4033 parseerror(parser, "cannot use [frame,think] notation without the required globals");
4034 parseerror(parser, "please declare the following globals: `time`, `self`");
4038 if (!parser_next(parser))
4041 framenum = parse_expression_leave(parser, true, false, false);
4043 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
4046 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
4047 ast_unref(framenum);
4048 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
4052 if (parser->tok != ',') {
4053 ast_unref(framenum);
4054 parseerror(parser, "expected comma after frame number in [frame,think] notation");
4055 parseerror(parser, "Got a %i\n", parser->tok);
4059 if (!parser_next(parser)) {
4060 ast_unref(framenum);
4064 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
4066 /* qc allows the use of not-yet-declared functions here
4067 * - this automatically creates a prototype */
4068 ast_value *thinkfunc;
4069 ast_expression *functype = fld_think->expression.next;
4071 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
4072 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
4073 ast_unref(framenum);
4074 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
4077 ast_type_adopt(thinkfunc, functype);
4079 if (!parser_next(parser)) {
4080 ast_unref(framenum);
4081 ast_delete(thinkfunc);
4085 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
4087 nextthink = (ast_expression*)thinkfunc;
4090 nextthink = parse_expression_leave(parser, true, false, false);
4092 ast_unref(framenum);
4093 parseerror(parser, "expected a think-function in [frame,think] notation");
4098 if (!ast_istype(nextthink, ast_value)) {
4099 parseerror(parser, "think-function in [frame,think] notation must be a constant");
4103 if (retval && parser->tok != ']') {
4104 parseerror(parser, "expected closing `]` for [frame,think] notation");
4108 if (retval && !parser_next(parser)) {
4112 if (retval && parser->tok != '{') {
4113 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
4118 ast_unref(nextthink);
4119 ast_unref(framenum);
4123 has_frame_think = true;
4126 block = ast_block_new(parser_ctx(parser));
4128 parseerror(parser, "failed to allocate block");
4129 if (has_frame_think) {
4130 ast_unref(nextthink);
4131 ast_unref(framenum);
4136 if (has_frame_think) {
4138 ast_expression *self_frame;
4139 ast_expression *self_nextthink;
4140 ast_expression *self_think;
4141 ast_expression *time_plus_1;
4142 ast_store *store_frame;
4143 ast_store *store_nextthink;
4144 ast_store *store_think;
4146 ctx = parser_ctx(parser);
4147 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
4148 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
4149 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
4151 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
4152 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
4154 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
4155 if (self_frame) ast_delete(self_frame);
4156 if (self_nextthink) ast_delete(self_nextthink);
4157 if (self_think) ast_delete(self_think);
4158 if (time_plus_1) ast_delete(time_plus_1);
4164 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
4165 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
4166 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
4169 ast_delete(self_frame);
4172 if (!store_nextthink) {
4173 ast_delete(self_nextthink);
4177 ast_delete(self_think);
4181 if (store_frame) ast_delete(store_frame);
4182 if (store_nextthink) ast_delete(store_nextthink);
4183 if (store_think) ast_delete(store_think);
4186 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
4187 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
4188 !ast_block_add_expr(block, (ast_expression*)store_think))
4195 parseerror(parser, "failed to generate code for [frame,think]");
4196 ast_unref(nextthink);
4197 ast_unref(framenum);
4203 if (var->hasvalue) {
4204 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
4205 ast_block_delete(block);
4209 func = ast_function_new(ast_ctx(var), var->name, var);
4211 parseerror(parser, "failed to allocate function for `%s`", var->name);
4212 ast_block_delete(block);
4215 vec_push(parser->functions, func);
4217 parser_enterblock(parser);
4219 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
4221 ast_value *param = var->expression.params[parami];
4224 if (param->expression.vtype != TYPE_VECTOR &&
4225 (param->expression.vtype != TYPE_FIELD ||
4226 param->expression.next->expression.vtype != TYPE_VECTOR))
4231 if (!create_vector_members(param, me)) {
4232 ast_block_delete(block);
4236 for (e = 0; e < 3; ++e) {
4237 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4238 ast_block_collect(block, (ast_expression*)me[e]);
4242 if (var->argcounter) {
4243 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4244 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4248 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4250 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4251 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4252 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4253 varargs->expression.count = 0;
4254 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4255 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4256 ast_delete(varargs);
4257 ast_block_delete(block);
4260 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4261 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4262 ast_delete(varargs);
4263 ast_block_delete(block);
4266 func->varargs = varargs;
4268 func->fixedparams = parser_const_float(parser, vec_size(var->expression.params));
4271 parser->function = func;
4272 if (!parse_block_into(parser, block)) {
4273 ast_block_delete(block);
4277 vec_push(func->blocks, block);
4279 parser->function = old;
4280 if (!parser_leaveblock(parser))
4282 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4283 parseerror(parser, "internal error: local scopes left");
4287 if (parser->tok == ';')
4288 return parser_next(parser);
4289 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4290 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4294 (void)!parser_leaveblock(parser);
4295 vec_pop(parser->functions);
4296 ast_function_delete(func);
4297 var->constval.vfunc = NULL;
4300 parser->function = old;
4304 static ast_expression *array_accessor_split(
4309 ast_expression *left,
4310 ast_expression *right
4316 lex_ctx ctx = ast_ctx(array);
4318 if (!left || !right) {
4319 if (left) ast_delete(left);
4320 if (right) ast_delete(right);
4324 cmp = ast_binary_new(ctx, INSTR_LT,
4325 (ast_expression*)index,
4326 (ast_expression*)parser_const_float(parser, middle));
4330 parseerror(parser, "internal error: failed to create comparison for array setter");
4334 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4336 ast_delete(cmp); /* will delete left and right */
4337 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4341 return (ast_expression*)ifthen;
4344 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4346 lex_ctx ctx = ast_ctx(array);
4348 if (from+1 == afterend) {
4349 /* set this value */
4352 ast_array_index *subscript;
4354 int assignop = type_store_instr[value->expression.vtype];
4356 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
4357 assignop = INSTR_STORE_V;
4359 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4363 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4365 ast_delete(subscript);
4369 block = ast_block_new(ctx);
4375 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4380 ret = ast_return_new(ctx, NULL);
4386 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4391 return (ast_expression*)block;
4393 ast_expression *left, *right;
4394 size_t diff = afterend - from;
4395 size_t middle = from + diff/2;
4396 left = array_setter_node(parser, array, index, value, from, middle);
4397 right = array_setter_node(parser, array, index, value, middle, afterend);
4398 return array_accessor_split(parser, array, index, middle, left, right);
4402 static ast_expression *array_field_setter_node(
4411 lex_ctx ctx = ast_ctx(array);
4413 if (from+1 == afterend) {
4414 /* set this value */
4417 ast_entfield *entfield;
4418 ast_array_index *subscript;
4420 int assignop = type_storep_instr[value->expression.vtype];
4422 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
4423 assignop = INSTR_STOREP_V;
4425 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4429 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4430 subscript->expression.vtype = TYPE_FIELD;
4432 entfield = ast_entfield_new_force(ctx,
4433 (ast_expression*)entity,
4434 (ast_expression*)subscript,
4435 (ast_expression*)subscript);
4437 ast_delete(subscript);
4441 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4443 ast_delete(entfield);
4447 block = ast_block_new(ctx);
4453 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4458 ret = ast_return_new(ctx, NULL);
4464 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4469 return (ast_expression*)block;
4471 ast_expression *left, *right;
4472 size_t diff = afterend - from;
4473 size_t middle = from + diff/2;
4474 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4475 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4476 return array_accessor_split(parser, array, index, middle, left, right);
4480 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4482 lex_ctx ctx = ast_ctx(array);
4484 if (from+1 == afterend) {
4486 ast_array_index *subscript;
4488 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4492 ret = ast_return_new(ctx, (ast_expression*)subscript);
4494 ast_delete(subscript);
4498 return (ast_expression*)ret;
4500 ast_expression *left, *right;
4501 size_t diff = afterend - from;
4502 size_t middle = from + diff/2;
4503 left = array_getter_node(parser, array, index, from, middle);
4504 right = array_getter_node(parser, array, index, middle, afterend);
4505 return array_accessor_split(parser, array, index, middle, left, right);
4509 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4511 ast_function *func = NULL;
4512 ast_value *fval = NULL;
4513 ast_block *body = NULL;
4515 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4517 parseerror(parser, "failed to create accessor function value");
4521 func = ast_function_new(ast_ctx(array), funcname, fval);
4524 parseerror(parser, "failed to create accessor function node");
4528 body = ast_block_new(ast_ctx(array));
4530 parseerror(parser, "failed to create block for array accessor");
4536 vec_push(func->blocks, body);
4539 vec_push(parser->accessors, fval);
4544 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4546 ast_value *index = NULL;
4547 ast_value *value = NULL;
4551 if (!ast_istype(array->expression.next, ast_value)) {
4552 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4556 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4558 func = fval->constval.vfunc;
4559 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4561 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4562 value = ast_value_copy((ast_value*)array->expression.next);
4564 if (!index || !value) {
4565 parseerror(parser, "failed to create locals for array accessor");
4568 (void)!ast_value_set_name(value, "value"); /* not important */
4569 vec_push(fval->expression.params, index);
4570 vec_push(fval->expression.params, value);
4572 array->setter = fval;
4575 if (index) ast_delete(index);
4576 if (value) ast_delete(value);
4582 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4584 ast_expression *root = NULL;
4585 root = array_setter_node(parser, array,
4586 array->setter->expression.params[0],
4587 array->setter->expression.params[1],
4588 0, array->expression.count);
4590 parseerror(parser, "failed to build accessor search tree");
4593 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4600 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4602 if (!parser_create_array_setter_proto(parser, array, funcname))
4604 return parser_create_array_setter_impl(parser, array);
4607 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4609 ast_expression *root = NULL;
4610 ast_value *entity = NULL;
4611 ast_value *index = NULL;
4612 ast_value *value = NULL;
4616 if (!ast_istype(array->expression.next, ast_value)) {
4617 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4621 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4623 func = fval->constval.vfunc;
4624 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4626 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4627 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4628 value = ast_value_copy((ast_value*)array->expression.next);
4629 if (!entity || !index || !value) {
4630 parseerror(parser, "failed to create locals for array accessor");
4633 (void)!ast_value_set_name(value, "value"); /* not important */
4634 vec_push(fval->expression.params, entity);
4635 vec_push(fval->expression.params, index);
4636 vec_push(fval->expression.params, value);
4638 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4640 parseerror(parser, "failed to build accessor search tree");
4644 array->setter = fval;
4645 return ast_block_add_expr(func->blocks[0], root);
4647 if (entity) ast_delete(entity);
4648 if (index) ast_delete(index);
4649 if (value) ast_delete(value);
4650 if (root) ast_delete(root);
4656 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4658 ast_value *index = NULL;
4662 /* NOTE: checking array->expression.next rather than elemtype since
4663 * for fields elemtype is a temporary fieldtype.
4665 if (!ast_istype(array->expression.next, ast_value)) {
4666 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4670 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4672 func = fval->constval.vfunc;
4673 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4675 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4678 parseerror(parser, "failed to create locals for array accessor");
4681 vec_push(fval->expression.params, index);
4683 array->getter = fval;
4686 if (index) ast_delete(index);
4692 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4694 ast_expression *root = NULL;
4696 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4698 parseerror(parser, "failed to build accessor search tree");
4701 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4708 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4710 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4712 return parser_create_array_getter_impl(parser, array);
4715 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4716 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4724 bool variadic = false;
4725 ast_value *varparam = NULL;
4726 char *argcounter = NULL;
4728 ctx = parser_ctx(parser);
4730 /* for the sake of less code we parse-in in this function */
4731 if (!parser_next(parser)) {
4732 parseerror(parser, "expected parameter list");
4738 /* parse variables until we hit a closing paren */
4739 while (parser->tok != ')') {
4741 /* there must be commas between them */
4742 if (parser->tok != ',') {
4743 parseerror(parser, "expected comma or end of parameter list");
4746 if (!parser_next(parser)) {
4747 parseerror(parser, "expected parameter");
4753 if (parser->tok == TOKEN_DOTS) {
4754 /* '...' indicates a varargs function */
4756 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4757 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4760 if (parser->tok == TOKEN_IDENT) {
4761 argcounter = util_strdup(parser_tokval(parser));
4762 if (!parser_next(parser) || parser->tok != ')') {
4763 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4770 /* for anything else just parse a typename */
4771 param = parse_typename(parser, NULL, NULL);
4774 vec_push(params, param);
4775 if (param->expression.vtype >= TYPE_VARIANT) {
4776 char tname[1024]; /* typename is reserved in C++ */
4777 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4778 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4781 /* type-restricted varargs */
4782 if (parser->tok == TOKEN_DOTS) {
4784 varparam = vec_last(params);
4786 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4787 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4790 if (parser->tok == TOKEN_IDENT) {
4791 argcounter = util_strdup(parser_tokval(parser));
4792 if (!parser_next(parser) || parser->tok != ')') {
4793 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4801 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4805 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4806 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4809 if (!parser_next(parser)) {
4810 parseerror(parser, "parse error after typename");
4814 /* now turn 'var' into a function type */
4815 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4816 fval->expression.next = (ast_expression*)var;
4818 fval->expression.flags |= AST_FLAG_VARIADIC;
4821 var->expression.params = params;
4822 var->expression.varparam = (ast_expression*)varparam;
4823 var->argcounter = argcounter;
4832 ast_delete(varparam);
4834 for (i = 0; i < vec_size(params); ++i)
4835 ast_delete(params[i]);
4840 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4842 ast_expression *cexp;
4843 ast_value *cval, *tmp;
4846 ctx = parser_ctx(parser);
4848 if (!parser_next(parser)) {
4850 parseerror(parser, "expected array-size");
4854 cexp = parse_expression_leave(parser, true, false, false);
4856 if (!cexp || !ast_istype(cexp, ast_value)) {
4860 parseerror(parser, "expected array-size as constant positive integer");
4863 cval = (ast_value*)cexp;
4865 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4866 tmp->expression.next = (ast_expression*)var;
4869 if (cval->expression.vtype == TYPE_INTEGER)
4870 tmp->expression.count = cval->constval.vint;
4871 else if (cval->expression.vtype == TYPE_FLOAT)
4872 tmp->expression.count = cval->constval.vfloat;
4876 parseerror(parser, "array-size must be a positive integer constant");
4881 if (parser->tok != ']') {
4883 parseerror(parser, "expected ']' after array-size");
4886 if (!parser_next(parser)) {
4888 parseerror(parser, "error after parsing array size");
4894 /* Parse a complete typename.
4895 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4896 * but when parsing variables separated by comma
4897 * 'storebase' should point to where the base-type should be kept.
4898 * The base type makes up every bit of type information which comes *before* the
4901 * The following will be parsed in its entirety:
4903 * The 'basetype' in this case is 'void()'
4904 * and if there's a comma after it, say:
4906 * then the type-information 'void()' can be stored in 'storebase'
4908 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4910 ast_value *var, *tmp;
4913 const char *name = NULL;
4914 bool isfield = false;
4915 bool wasarray = false;
4916 size_t morefields = 0;
4918 ctx = parser_ctx(parser);
4920 /* types may start with a dot */
4921 if (parser->tok == '.') {
4923 /* if we parsed a dot we need a typename now */
4924 if (!parser_next(parser)) {
4925 parseerror(parser, "expected typename for field definition");
4929 /* Further dots are handled seperately because they won't be part of the
4932 while (parser->tok == '.') {
4934 if (!parser_next(parser)) {
4935 parseerror(parser, "expected typename for field definition");
4940 if (parser->tok == TOKEN_IDENT)
4941 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4942 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4943 parseerror(parser, "expected typename");
4947 /* generate the basic type value */
4948 if (cached_typedef) {
4949 var = ast_value_copy(cached_typedef);
4950 ast_value_set_name(var, "<type(from_def)>");
4952 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4954 for (; morefields; --morefields) {
4955 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4956 tmp->expression.next = (ast_expression*)var;
4960 /* do not yet turn into a field - remember:
4961 * .void() foo; is a field too
4962 * .void()() foo; is a function
4966 if (!parser_next(parser)) {
4968 parseerror(parser, "parse error after typename");
4972 /* an opening paren now starts the parameter-list of a function
4973 * this is where original-QC has parameter lists.
4974 * We allow a single parameter list here.
4975 * Much like fteqcc we don't allow `float()() x`
4977 if (parser->tok == '(') {
4978 var = parse_parameter_list(parser, var);
4983 /* store the base if requested */
4985 *storebase = ast_value_copy(var);
4987 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4988 tmp->expression.next = (ast_expression*)*storebase;
4993 /* there may be a name now */
4994 if (parser->tok == TOKEN_IDENT) {
4995 name = util_strdup(parser_tokval(parser));
4997 if (!parser_next(parser)) {
4999 parseerror(parser, "error after variable or field declaration");
5004 /* now this may be an array */
5005 if (parser->tok == '[') {
5007 var = parse_arraysize(parser, var);
5012 /* This is the point where we can turn it into a field */
5014 /* turn it into a field if desired */
5015 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5016 tmp->expression.next = (ast_expression*)var;
5020 /* now there may be function parens again */
5021 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5022 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5023 if (parser->tok == '(' && wasarray)
5024 parseerror(parser, "arrays as part of a return type is not supported");
5025 while (parser->tok == '(') {
5026 var = parse_parameter_list(parser, var);
5034 /* finally name it */
5036 if (!ast_value_set_name(var, name)) {
5038 parseerror(parser, "internal error: failed to set name");
5041 /* free the name, ast_value_set_name duplicates */
5048 static bool parse_typedef(parser_t *parser)
5050 ast_value *typevar, *oldtype;
5051 ast_expression *old;
5053 typevar = parse_typename(parser, NULL, NULL);
5058 if ( (old = parser_find_var(parser, typevar->name)) ) {
5059 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
5060 " -> `%s` has been declared here: %s:%i",
5061 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
5062 ast_delete(typevar);
5066 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
5067 parseerror(parser, "type `%s` has already been declared here: %s:%i",
5068 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
5069 ast_delete(typevar);
5073 vec_push(parser->_typedefs, typevar);
5074 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
5076 if (parser->tok != ';') {
5077 parseerror(parser, "expected semicolon after typedef");
5080 if (!parser_next(parser)) {
5081 parseerror(parser, "parse error after typedef");
5088 static const char *cvq_to_str(int cvq) {
5090 case CV_NONE: return "none";
5091 case CV_VAR: return "`var`";
5092 case CV_CONST: return "`const`";
5093 default: return "<INVALID>";
5097 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
5100 if (proto->cvq != var->cvq) {
5101 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
5102 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5103 parser->tok == '='))
5105 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
5106 "`%s` declared with different qualifiers: %s\n"
5107 " -> previous declaration here: %s:%i uses %s",
5108 var->name, cvq_to_str(var->cvq),
5109 ast_ctx(proto).file, ast_ctx(proto).line,
5110 cvq_to_str(proto->cvq));
5113 av = (var ->expression.flags & AST_FLAG_NORETURN);
5114 ao = (proto->expression.flags & AST_FLAG_NORETURN);
5116 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
5117 "`%s` declared with different attributes%s\n"
5118 " -> previous declaration here: %s:%i",
5119 var->name, (av ? ": noreturn" : ""),
5120 ast_ctx(proto).file, ast_ctx(proto).line,
5121 (ao ? ": noreturn" : ""));
5126 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)
5130 ast_expression *old;
5134 ast_value *basetype = NULL;
5136 bool isparam = false;
5137 bool isvector = false;
5138 bool cleanvar = true;
5139 bool wasarray = false;
5141 ast_member *me[3] = { NULL, NULL, NULL };
5143 if (!localblock && is_static)
5144 parseerror(parser, "`static` qualifier is not supported in global scope");
5146 /* get the first complete variable */
5147 var = parse_typename(parser, &basetype, cached_typedef);
5150 ast_delete(basetype);
5158 /* Part 0: finish the type */
5159 if (parser->tok == '(') {
5160 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5161 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5162 var = parse_parameter_list(parser, var);
5168 /* we only allow 1-dimensional arrays */
5169 if (parser->tok == '[') {
5171 var = parse_arraysize(parser, var);
5177 if (parser->tok == '(' && wasarray) {
5178 parseerror(parser, "arrays as part of a return type is not supported");
5179 /* we'll still parse the type completely for now */
5181 /* for functions returning functions */
5182 while (parser->tok == '(') {
5183 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5184 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5185 var = parse_parameter_list(parser, var);
5192 var->cvq = qualifier;
5193 var->expression.flags |= qflags;
5196 * store the vstring back to var for alias and
5197 * deprecation messages.
5199 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5200 var->expression.flags & AST_FLAG_ALIAS)
5201 var->desc = vstring;
5204 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5205 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5206 * is then filled with the previous definition and the parameter-names replaced.
5208 if (!strcmp(var->name, "nil")) {
5209 if (OPTS_FLAG(UNTYPED_NIL)) {
5210 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5211 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5213 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5216 /* Deal with end_sys_ vars */
5218 if (!strcmp(var->name, "end_sys_globals")) {
5220 parser->crc_globals = vec_size(parser->globals);
5223 else if (!strcmp(var->name, "end_sys_fields")) {
5225 parser->crc_fields = vec_size(parser->fields);
5228 if (was_end && var->expression.vtype == TYPE_FIELD) {
5229 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5230 "global '%s' hint should not be a field",
5231 parser_tokval(parser)))
5238 if (!nofields && var->expression.vtype == TYPE_FIELD)
5240 /* deal with field declarations */
5241 old = parser_find_field(parser, var->name);
5243 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5244 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5253 parseerror(parser, "field `%s` already declared here: %s:%i",
5254 var->name, ast_ctx(old).file, ast_ctx(old).line);
5259 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5260 (old = parser_find_global(parser, var->name)))
5262 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5263 parseerror(parser, "field `%s` already declared here: %s:%i",
5264 var->name, ast_ctx(old).file, ast_ctx(old).line);
5271 /* deal with other globals */
5272 old = parser_find_global(parser, var->name);
5273 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
5275 /* This is a function which had a prototype */
5276 if (!ast_istype(old, ast_value)) {
5277 parseerror(parser, "internal error: prototype is not an ast_value");
5281 proto = (ast_value*)old;
5282 proto->desc = var->desc;
5283 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5284 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5286 ast_ctx(proto).file, ast_ctx(proto).line);
5290 /* we need the new parameter-names */
5291 for (i = 0; i < vec_size(proto->expression.params); ++i)
5292 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5293 if (!parser_check_qualifiers(parser, var, proto)) {
5300 proto->expression.flags |= var->expression.flags;
5308 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5309 "global `%s` already declared here: %s:%i",
5310 var->name, ast_ctx(old).file, ast_ctx(old).line))
5315 proto = (ast_value*)old;
5316 if (!ast_istype(old, ast_value)) {
5317 parseerror(parser, "internal error: not an ast_value");
5322 if (!parser_check_qualifiers(parser, var, proto)) {
5327 proto->expression.flags |= var->expression.flags;
5331 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5332 (old = parser_find_field(parser, var->name)))
5334 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5335 parseerror(parser, "global `%s` already declared here: %s:%i",
5336 var->name, ast_ctx(old).file, ast_ctx(old).line);
5343 else /* it's not a global */
5345 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5346 if (old && !isparam) {
5347 parseerror(parser, "local `%s` already declared here: %s:%i",
5348 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5352 old = parser_find_local(parser, var->name, 0, &isparam);
5353 if (old && isparam) {
5354 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5355 "local `%s` is shadowing a parameter", var->name))
5357 parseerror(parser, "local `%s` already declared here: %s:%i",
5358 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5362 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5370 /* in a noref section we simply bump the usecount */
5371 if (noref || parser->noref)
5375 * Create the global/local, and deal with vector types.
5378 if (var->expression.vtype == TYPE_VECTOR)
5380 else if (var->expression.vtype == TYPE_FIELD &&
5381 var->expression.next->expression.vtype == TYPE_VECTOR)
5385 if (!create_vector_members(var, me)) {
5392 /* deal with global variables, fields, functions */
5393 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5394 var->isfield = true;
5395 vec_push(parser->fields, (ast_expression*)var);
5396 util_htset(parser->htfields, var->name, var);
5398 for (i = 0; i < 3; ++i) {
5399 vec_push(parser->fields, (ast_expression*)me[i]);
5400 util_htset(parser->htfields, me[i]->name, me[i]);
5405 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5406 parser_addglobal(parser, var->name, (ast_expression*)var);
5408 for (i = 0; i < 3; ++i) {
5409 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5413 ast_expression *find = parser_find_global(parser, var->desc);
5416 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5420 if (var->expression.vtype != find->expression.vtype) {
5424 ast_type_to_string(find, ty1, sizeof(ty1));
5425 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5427 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5434 * add alias to aliases table and to corrector
5435 * so corrections can apply for aliases as well.
5437 util_htset(parser->aliases, var->name, find);
5440 * add to corrector so corrections can work
5441 * even for aliases too.
5444 vec_last(parser->correct_variables),
5445 &vec_last(parser->correct_variables_score),
5449 /* generate aliases for vector components */
5453 util_asprintf(&buffer[0], "%s_x", var->desc);
5454 util_asprintf(&buffer[1], "%s_y", var->desc);
5455 util_asprintf(&buffer[2], "%s_z", var->desc);
5457 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5458 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5459 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5466 * add to corrector so corrections can work
5467 * even for aliases too.
5470 vec_last(parser->correct_variables),
5471 &vec_last(parser->correct_variables_score),
5475 vec_last(parser->correct_variables),
5476 &vec_last(parser->correct_variables_score),
5480 vec_last(parser->correct_variables),
5481 &vec_last(parser->correct_variables_score),
5489 /* a static adds itself to be generated like any other global
5490 * but is added to the local namespace instead
5492 char *defname = NULL;
5493 size_t prefix_len, ln;
5495 ln = strlen(parser->function->name);
5496 vec_append(defname, ln, parser->function->name);
5498 vec_append(defname, 2, "::");
5499 /* remember the length up to here */
5500 prefix_len = vec_size(defname);
5502 /* Add it to the local scope */
5503 util_htset(vec_last(parser->variables), var->name, (void*)var);
5507 vec_last(parser->correct_variables),
5508 &vec_last(parser->correct_variables_score),
5512 /* now rename the global */
5513 ln = strlen(var->name);
5514 vec_append(defname, ln, var->name);
5515 ast_value_set_name(var, defname);
5517 /* push it to the to-be-generated globals */
5518 vec_push(parser->globals, (ast_expression*)var);
5520 /* same game for the vector members */
5522 for (i = 0; i < 3; ++i) {
5523 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5527 vec_last(parser->correct_variables),
5528 &vec_last(parser->correct_variables_score),
5532 vec_shrinkto(defname, prefix_len);
5533 ln = strlen(me[i]->name);
5534 vec_append(defname, ln, me[i]->name);
5535 ast_member_set_name(me[i], defname);
5537 vec_push(parser->globals, (ast_expression*)me[i]);
5542 vec_push(localblock->locals, var);
5543 parser_addlocal(parser, var->name, (ast_expression*)var);
5545 for (i = 0; i < 3; ++i) {
5546 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5547 ast_block_collect(localblock, (ast_expression*)me[i]);
5553 me[0] = me[1] = me[2] = NULL;
5558 if (var->expression.vtype == TYPE_ARRAY) {
5560 util_snprintf(name, sizeof(name), "%s##SET", var->name);
5561 if (!parser_create_array_setter(parser, var, name))
5563 util_snprintf(name, sizeof(name), "%s##GET", var->name);
5564 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5567 else if (!localblock && !nofields &&
5568 var->expression.vtype == TYPE_FIELD &&
5569 var->expression.next->expression.vtype == TYPE_ARRAY)
5572 ast_expression *telem;
5574 ast_value *array = (ast_value*)var->expression.next;
5576 if (!ast_istype(var->expression.next, ast_value)) {
5577 parseerror(parser, "internal error: field element type must be an ast_value");
5581 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5582 if (!parser_create_array_field_setter(parser, array, name))
5585 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5586 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5587 tfield->expression.next = telem;
5588 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5589 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5597 if (parser->tok == ';') {
5598 ast_delete(basetype);
5599 if (!parser_next(parser)) {
5600 parseerror(parser, "error after variable declaration");
5606 if (parser->tok == ',')
5610 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5613 parseerror(parser, "missing comma or semicolon while parsing variables");
5617 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5618 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5619 "initializing expression turns variable `%s` into a constant in this standard",
5626 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5627 if (parser->tok != '=') {
5628 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5632 if (!parser_next(parser)) {
5633 parseerror(parser, "error parsing initializer");
5637 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5638 parseerror(parser, "expected '=' before function body in this standard");
5641 if (parser->tok == '#') {
5642 ast_function *func = NULL;
5643 ast_value *number = NULL;
5649 parseerror(parser, "cannot declare builtins within functions");
5652 if (var->expression.vtype != TYPE_FUNCTION) {
5653 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5656 if (!parser_next(parser)) {
5657 parseerror(parser, "expected builtin number");
5661 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5662 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5664 parseerror(parser, "builtin number expected");
5667 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5670 parseerror(parser, "builtin number must be a compile time constant");
5673 if (number->expression.vtype == TYPE_INTEGER)
5674 builtin_num = number->constval.vint;
5675 else if (number->expression.vtype == TYPE_FLOAT)
5676 builtin_num = number->constval.vfloat;
5679 parseerror(parser, "builtin number must be an integer constant");
5684 fractional = modff(builtin_num, &integral);
5685 if (builtin_num < 0 || fractional != 0) {
5686 parseerror(parser, "builtin number must be an integer greater than zero");
5690 /* we only want the integral part anyways */
5691 builtin_num = integral;
5692 } else if (parser->tok == TOKEN_INTCONST) {
5693 builtin_num = parser_token(parser)->constval.i;
5695 parseerror(parser, "builtin number must be a compile time constant");
5699 if (var->hasvalue) {
5700 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5701 "builtin `%s` has already been defined\n"
5702 " -> previous declaration here: %s:%i",
5703 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5707 func = ast_function_new(ast_ctx(var), var->name, var);
5709 parseerror(parser, "failed to allocate function for `%s`", var->name);
5712 vec_push(parser->functions, func);
5714 func->builtin = -builtin_num-1;
5717 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5718 ? (parser->tok != ',' && parser->tok != ';')
5719 : (!parser_next(parser)))
5721 parseerror(parser, "expected comma or semicolon");
5723 ast_function_delete(func);
5724 var->constval.vfunc = NULL;
5728 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
5731 /* Note that fteqcc and most others don't even *have*
5732 * local arrays, so this is not a high priority.
5734 parseerror(parser, "TODO: initializers for local arrays");
5738 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
5740 parseerror(parser, "TODO: initializing global arrays is not supported yet!");
5743 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
5746 parseerror(parser, "cannot declare functions within functions");
5751 ast_ctx(proto) = parser_ctx(parser);
5753 if (!parse_function_body(parser, var))
5755 ast_delete(basetype);
5756 for (i = 0; i < vec_size(parser->gotos); ++i)
5757 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5758 vec_free(parser->gotos);
5759 vec_free(parser->labels);
5762 ast_expression *cexp;
5765 cexp = parse_expression_leave(parser, true, false, false);
5770 cval = (ast_value*)cexp;
5771 if (cval != parser->nil &&
5772 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5775 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5779 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5780 qualifier != CV_VAR)
5782 var->cvq = CV_CONST;
5784 if (cval == parser->nil)
5785 var->expression.flags |= AST_FLAG_INITIALIZED;
5788 var->hasvalue = true;
5789 if (cval->expression.vtype == TYPE_STRING)
5790 var->constval.vstring = parser_strdup(cval->constval.vstring);
5791 else if (cval->expression.vtype == TYPE_FIELD)
5792 var->constval.vfield = cval;
5794 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5800 shunt sy = { NULL, NULL, NULL, NULL };
5803 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5804 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5805 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5806 if (!parser_sy_apply_operator(parser, &sy))
5809 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5810 parseerror(parser, "internal error: leaked operands");
5811 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5821 if (parser->tok == ',') {
5822 if (!parser_next(parser)) {
5823 parseerror(parser, "expected another variable");
5827 if (parser->tok != TOKEN_IDENT) {
5828 parseerror(parser, "expected another variable");
5831 var = ast_value_copy(basetype);
5833 ast_value_set_name(var, parser_tokval(parser));
5834 if (!parser_next(parser)) {
5835 parseerror(parser, "error parsing variable declaration");
5841 if (parser->tok != ';') {
5842 parseerror(parser, "missing semicolon after variables");
5846 if (!parser_next(parser)) {
5847 parseerror(parser, "parse error after variable declaration");
5851 ast_delete(basetype);
5855 if (cleanvar && var)
5857 ast_delete(basetype);
5861 ast_delete(basetype);
5862 if (cleanvar && var)
5864 if (me[0]) ast_member_delete(me[0]);
5865 if (me[1]) ast_member_delete(me[1]);
5866 if (me[2]) ast_member_delete(me[2]);
5870 static bool parser_global_statement(parser_t *parser)
5874 bool is_static = false;
5875 uint32_t qflags = 0;
5876 ast_value *istype = NULL;
5877 char *vstring = NULL;
5879 if (parser->tok == TOKEN_IDENT)
5880 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5882 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5884 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5886 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5888 if (cvq == CV_WRONG)
5890 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5892 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5894 return parse_enum(parser);
5896 else if (parser->tok == TOKEN_KEYWORD)
5898 if (!strcmp(parser_tokval(parser), "typedef")) {
5899 if (!parser_next(parser)) {
5900 parseerror(parser, "expected type definition after 'typedef'");
5903 return parse_typedef(parser);
5905 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5908 else if (parser->tok == '#')
5910 return parse_pragma(parser);
5912 else if (parser->tok == '$')
5914 if (!parser_next(parser)) {
5915 parseerror(parser, "parse error");
5921 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
5927 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5929 return util_crc16(old, str, strlen(str));
5932 static void progdefs_crc_file(const char *str)
5934 /* write to progdefs.h here */
5938 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5940 old = progdefs_crc_sum(old, str);
5941 progdefs_crc_file(str);
5945 static void generate_checksum(parser_t *parser)
5947 uint16_t crc = 0xFFFF;
5951 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5952 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5954 progdefs_crc_file("\tint\tpad;\n");
5955 progdefs_crc_file("\tint\tofs_return[3];\n");
5956 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5957 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5958 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5959 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5960 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5961 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5962 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5963 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5965 for (i = 0; i < parser->crc_globals; ++i) {
5966 if (!ast_istype(parser->globals[i], ast_value))
5968 value = (ast_value*)(parser->globals[i]);
5969 switch (value->expression.vtype) {
5970 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5971 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5972 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5973 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5975 crc = progdefs_crc_both(crc, "\tint\t");
5978 crc = progdefs_crc_both(crc, value->name);
5979 crc = progdefs_crc_both(crc, ";\n");
5981 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5982 for (i = 0; i < parser->crc_fields; ++i) {
5983 if (!ast_istype(parser->fields[i], ast_value))
5985 value = (ast_value*)(parser->fields[i]);
5986 switch (value->expression.next->expression.vtype) {
5987 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5988 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5989 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5990 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5992 crc = progdefs_crc_both(crc, "\tint\t");
5995 crc = progdefs_crc_both(crc, value->name);
5996 crc = progdefs_crc_both(crc, ";\n");
5998 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
6000 parser->code->crc = crc;
6003 parser_t *parser_create()
6009 parser = (parser_t*)mem_a(sizeof(parser_t));
6013 memset(parser, 0, sizeof(*parser));
6015 if (!(parser->code = code_init())) {
6021 for (i = 0; i < operator_count; ++i) {
6022 if (operators[i].id == opid1('=')) {
6023 parser->assign_op = operators+i;
6027 if (!parser->assign_op) {
6028 printf("internal error: initializing parser: failed to find assign operator\n");
6033 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
6034 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
6035 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
6036 vec_push(parser->_blocktypedefs, 0);
6038 parser->aliases = util_htnew(PARSER_HT_SIZE);
6040 parser->ht_imm_string = util_htnew(512);
6043 vec_push(parser->correct_variables, correct_trie_new());
6044 vec_push(parser->correct_variables_score, NULL);
6046 empty_ctx.file = "<internal>";
6048 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
6049 parser->nil->cvq = CV_CONST;
6050 if (OPTS_FLAG(UNTYPED_NIL))
6051 util_htset(parser->htglobals, "nil", (void*)parser->nil);
6053 parser->max_param_count = 1;
6055 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
6056 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
6057 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
6059 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
6060 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
6061 parser->reserved_version->cvq = CV_CONST;
6062 parser->reserved_version->hasvalue = true;
6063 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
6064 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
6066 parser->reserved_version = NULL;
6072 bool parser_compile(parser_t *parser)
6074 /* initial lexer/parser state */
6075 parser->lex->flags.noops = true;
6077 if (parser_next(parser))
6079 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
6081 if (!parser_global_statement(parser)) {
6082 if (parser->tok == TOKEN_EOF)
6083 parseerror(parser, "unexpected eof");
6084 else if (compile_errors)
6085 parseerror(parser, "there have been errors, bailing out");
6086 lex_close(parser->lex);
6092 parseerror(parser, "parse error");
6093 lex_close(parser->lex);
6098 lex_close(parser->lex);
6101 return !compile_errors;
6104 bool parser_compile_file(parser_t *parser, const char *filename)
6106 parser->lex = lex_open(filename);
6108 con_err("failed to open file \"%s\"\n", filename);
6111 return parser_compile(parser);
6114 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
6116 parser->lex = lex_open_string(str, len, name);
6118 con_err("failed to create lexer for string \"%s\"\n", name);
6121 return parser_compile(parser);
6124 void parser_cleanup(parser_t *parser)
6127 for (i = 0; i < vec_size(parser->accessors); ++i) {
6128 ast_delete(parser->accessors[i]->constval.vfunc);
6129 parser->accessors[i]->constval.vfunc = NULL;
6130 ast_delete(parser->accessors[i]);
6132 for (i = 0; i < vec_size(parser->functions); ++i) {
6133 ast_delete(parser->functions[i]);
6135 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6136 ast_delete(parser->imm_vector[i]);
6138 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6139 ast_delete(parser->imm_string[i]);
6141 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6142 ast_delete(parser->imm_float[i]);
6144 for (i = 0; i < vec_size(parser->fields); ++i) {
6145 ast_delete(parser->fields[i]);
6147 for (i = 0; i < vec_size(parser->globals); ++i) {
6148 ast_delete(parser->globals[i]);
6150 vec_free(parser->accessors);
6151 vec_free(parser->functions);
6152 vec_free(parser->imm_vector);
6153 vec_free(parser->imm_string);
6154 util_htdel(parser->ht_imm_string);
6155 vec_free(parser->imm_float);
6156 vec_free(parser->globals);
6157 vec_free(parser->fields);
6159 for (i = 0; i < vec_size(parser->variables); ++i)
6160 util_htdel(parser->variables[i]);
6161 vec_free(parser->variables);
6162 vec_free(parser->_blocklocals);
6163 vec_free(parser->_locals);
6166 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
6167 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
6169 vec_free(parser->correct_variables);
6170 vec_free(parser->correct_variables_score);
6173 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6174 ast_delete(parser->_typedefs[i]);
6175 vec_free(parser->_typedefs);
6176 for (i = 0; i < vec_size(parser->typedefs); ++i)
6177 util_htdel(parser->typedefs[i]);
6178 vec_free(parser->typedefs);
6179 vec_free(parser->_blocktypedefs);
6181 vec_free(parser->_block_ctx);
6183 vec_free(parser->labels);
6184 vec_free(parser->gotos);
6185 vec_free(parser->breaks);
6186 vec_free(parser->continues);
6188 ast_value_delete(parser->nil);
6190 ast_value_delete(parser->const_vec[0]);
6191 ast_value_delete(parser->const_vec[1]);
6192 ast_value_delete(parser->const_vec[2]);
6194 util_htdel(parser->aliases);
6196 intrin_intrinsics_destroy(parser);
6201 bool parser_finish(parser_t *parser, const char *output)
6207 if (compile_errors) {
6208 con_out("*** there were compile errors\n");
6212 ir = ir_builder_new("gmqcc_out");
6214 con_out("failed to allocate builder\n");
6218 for (i = 0; i < vec_size(parser->fields); ++i) {
6221 if (!ast_istype(parser->fields[i], ast_value))
6223 field = (ast_value*)parser->fields[i];
6224 hasvalue = field->hasvalue;
6225 field->hasvalue = false;
6226 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6227 con_out("failed to generate field %s\n", field->name);
6228 ir_builder_delete(ir);
6233 ast_expression *subtype;
6234 field->hasvalue = true;
6235 subtype = field->expression.next;
6236 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
6237 if (subtype->expression.vtype == TYPE_FIELD)
6238 ifld->fieldtype = subtype->expression.next->expression.vtype;
6239 else if (subtype->expression.vtype == TYPE_FUNCTION)
6240 ifld->outtype = subtype->expression.next->expression.vtype;
6241 (void)!ir_value_set_field(field->ir_v, ifld);
6244 for (i = 0; i < vec_size(parser->globals); ++i) {
6246 if (!ast_istype(parser->globals[i], ast_value))
6248 asvalue = (ast_value*)(parser->globals[i]);
6249 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6250 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6251 "unused global: `%s`", asvalue->name);
6253 if (!ast_global_codegen(asvalue, ir, false)) {
6254 con_out("failed to generate global %s\n", asvalue->name);
6255 ir_builder_delete(ir);
6259 /* Build function vararg accessor ast tree now before generating
6260 * immediates, because the accessors may add new immediates
6262 for (i = 0; i < vec_size(parser->functions); ++i) {
6263 ast_function *f = parser->functions[i];
6265 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6266 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6267 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6268 con_out("failed to generate vararg setter for %s\n", f->name);
6269 ir_builder_delete(ir);
6272 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6273 con_out("failed to generate vararg getter for %s\n", f->name);
6274 ir_builder_delete(ir);
6278 ast_delete(f->varargs);
6283 /* Now we can generate immediates */
6284 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6285 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
6286 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
6287 ir_builder_delete(ir);
6291 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6292 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
6293 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
6294 ir_builder_delete(ir);
6298 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6299 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
6300 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
6301 ir_builder_delete(ir);
6305 for (i = 0; i < vec_size(parser->globals); ++i) {
6307 if (!ast_istype(parser->globals[i], ast_value))
6309 asvalue = (ast_value*)(parser->globals[i]);
6310 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6312 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6313 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6314 "uninitialized constant: `%s`",
6316 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6317 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6318 "uninitialized global: `%s`",
6321 if (!ast_generate_accessors(asvalue, ir)) {
6322 ir_builder_delete(ir);
6326 for (i = 0; i < vec_size(parser->fields); ++i) {
6328 asvalue = (ast_value*)(parser->fields[i]->expression.next);
6330 if (!ast_istype((ast_expression*)asvalue, ast_value))
6332 if (asvalue->expression.vtype != TYPE_ARRAY)
6334 if (!ast_generate_accessors(asvalue, ir)) {
6335 ir_builder_delete(ir);
6339 if (parser->reserved_version &&
6340 !ast_global_codegen(parser->reserved_version, ir, false))
6342 con_out("failed to generate reserved::version");
6343 ir_builder_delete(ir);
6346 for (i = 0; i < vec_size(parser->functions); ++i) {
6347 ast_function *f = parser->functions[i];
6348 if (!ast_function_codegen(f, ir)) {
6349 con_out("failed to generate function %s\n", f->name);
6350 ir_builder_delete(ir);
6354 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6355 ir_builder_dump(ir, con_out);
6356 for (i = 0; i < vec_size(parser->functions); ++i) {
6357 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6358 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6359 ir_builder_delete(ir);
6364 if (compile_Werrors) {
6365 con_out("*** there were warnings treated as errors\n");
6366 compile_show_werrors();
6371 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6372 ir_builder_dump(ir, con_out);
6374 generate_checksum(parser);
6376 if (!ir_builder_generate(parser->code, ir, output)) {
6377 con_out("*** failed to generate output file\n");
6378 ir_builder_delete(ir);
6383 ir_builder_delete(ir);