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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21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 /* beginning of locals */
32 #define PARSER_HT_LOCALS 2
34 #define PARSER_HT_SIZE 128
35 #define TYPEDEF_HT_SIZE 16
37 typedef struct parser_s {
43 ast_expression **globals;
44 ast_expression **fields;
45 ast_function **functions;
46 ast_value **imm_float;
47 ast_value **imm_string;
48 ast_value **imm_vector;
53 /* must be deleted first, they reference immediates and values */
54 ast_value **accessors;
56 ast_value *imm_float_zero;
57 ast_value *imm_float_one;
58 ast_value *imm_float_neg_one;
60 ast_value *imm_vector_zero;
63 ast_value *reserved_version;
68 ast_function *function;
71 /* All the labels the function defined...
72 * Should they be in ast_function instead?
77 const char **continues;
79 /* A list of hashtables for each scope */
85 /* same as above but for the spelling corrector */
86 correct_trie_t **correct_variables;
87 size_t ***correct_variables_score; /* vector of vector of size_t* */
89 /* not to be used directly, we use the hash table */
90 ast_expression **_locals;
92 ast_value **_typedefs;
93 size_t *_blocktypedefs;
96 /* we store the '=' operator info */
97 const oper_info *assign_op;
100 ast_value *const_vec[3];
105 /* collected information */
106 size_t max_param_count;
112 static ast_expression * const intrinsic_debug_typestring = (ast_expression*)0x1;
114 static void parser_enterblock(parser_t *parser);
115 static bool parser_leaveblock(parser_t *parser);
116 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
117 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
118 static bool parse_typedef(parser_t *parser);
119 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);
120 static ast_block* parse_block(parser_t *parser);
121 static bool parse_block_into(parser_t *parser, ast_block *block);
122 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
123 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
124 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
125 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
126 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname);
127 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname);
128 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
130 static void parseerror(parser_t *parser, const char *fmt, ...)
134 vcompile_error(parser->lex->tok.ctx, fmt, ap);
138 /* returns true if it counts as an error */
139 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
144 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
149 /**********************************************************************
150 * some maths used for constant folding
153 vector vec3_add(vector a, vector b)
162 vector vec3_sub(vector a, vector b)
171 qcfloat vec3_mulvv(vector a, vector b)
173 return (a.x * b.x + a.y * b.y + a.z * b.z);
176 vector vec3_mulvf(vector a, float b)
185 /**********************************************************************
189 static bool parser_next(parser_t *parser)
191 /* lex_do kills the previous token */
192 parser->tok = lex_do(parser->lex);
193 if (parser->tok == TOKEN_EOF)
195 if (parser->tok >= TOKEN_ERROR) {
196 parseerror(parser, "lex error");
202 #define parser_tokval(p) ((p)->lex->tok.value)
203 #define parser_token(p) (&((p)->lex->tok))
204 #define parser_ctx(p) ((p)->lex->tok.ctx)
206 static ast_value* parser_const_float(parser_t *parser, double d)
211 for (i = 0; i < vec_size(parser->imm_float); ++i) {
212 const double compare = parser->imm_float[i]->constval.vfloat;
213 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
214 return parser->imm_float[i];
217 ctx = parser_ctx(parser);
219 memset(&ctx, 0, sizeof(ctx));
221 out = ast_value_new(ctx, "#IMMEDIATE", TYPE_FLOAT);
223 out->hasvalue = true;
225 out->constval.vfloat = d;
226 vec_push(parser->imm_float, out);
230 static ast_value* parser_const_float_0(parser_t *parser)
232 if (!parser->imm_float_zero)
233 parser->imm_float_zero = parser_const_float(parser, 0);
234 return parser->imm_float_zero;
237 static ast_value* parser_const_float_neg1(parser_t *parser) {
238 if (!parser->imm_float_neg_one)
239 parser->imm_float_neg_one = parser_const_float(parser, -1);
240 return parser->imm_float_neg_one;
243 static ast_value* parser_const_float_1(parser_t *parser)
245 if (!parser->imm_float_one)
246 parser->imm_float_one = parser_const_float(parser, 1);
247 return parser->imm_float_one;
250 static char *parser_strdup(const char *str)
253 /* actually dup empty strings */
254 char *out = (char*)mem_a(1);
258 return util_strdup(str);
261 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
263 size_t hash = util_hthash(parser->ht_imm_string, str);
265 if ( (out = (ast_value*)util_htgeth(parser->ht_imm_string, str, hash)) ) {
266 if (dotranslate && out->name[0] == '#') {
268 util_snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
269 ast_value_set_name(out, name);
270 out->expression.flags |= AST_FLAG_INCLUDE_DEF;
275 for (i = 0; i < vec_size(parser->imm_string); ++i) {
276 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
277 return parser->imm_string[i];
282 util_snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
283 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
284 out->expression.flags |= AST_FLAG_INCLUDE_DEF;
286 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
288 out->hasvalue = true;
290 out->constval.vstring = parser_strdup(str);
291 vec_push(parser->imm_string, out);
292 util_htseth(parser->ht_imm_string, str, hash, out);
296 static ast_value* parser_const_vector(parser_t *parser, vector v)
300 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
301 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
302 return parser->imm_vector[i];
304 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
306 out->hasvalue = true;
308 out->constval.vvec = v;
309 vec_push(parser->imm_vector, out);
313 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
319 return parser_const_vector(parser, v);
322 static ast_value* parser_const_vector_0(parser_t *parser)
324 if (!parser->imm_vector_zero)
325 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
326 return parser->imm_vector_zero;
329 static ast_expression* parser_find_field(parser_t *parser, const char *name)
331 return ( ast_expression*)util_htget(parser->htfields, name);
334 static ast_expression* parser_find_label(parser_t *parser, const char *name)
337 for(i = 0; i < vec_size(parser->labels); i++)
338 if (!strcmp(parser->labels[i]->name, name))
339 return (ast_expression*)parser->labels[i];
343 static ast_expression* parser_find_global(parser_t *parser, const char *name)
345 ast_expression *var = (ast_expression*)util_htget(parser->aliases, parser_tokval(parser));
348 return (ast_expression*)util_htget(parser->htglobals, name);
351 static ast_expression* parser_find_param(parser_t *parser, const char *name)
355 if (!parser->function)
357 fun = parser->function->vtype;
358 for (i = 0; i < vec_size(fun->expression.params); ++i) {
359 if (!strcmp(fun->expression.params[i]->name, name))
360 return (ast_expression*)(fun->expression.params[i]);
365 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
370 hash = util_hthash(parser->htglobals, name);
373 for (i = vec_size(parser->variables); i > upto;) {
375 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
379 return parser_find_param(parser, name);
382 static ast_expression* parser_find_var(parser_t *parser, const char *name)
386 v = parser_find_local(parser, name, 0, &dummy);
387 if (!v) v = parser_find_global(parser, name);
391 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
395 hash = util_hthash(parser->typedefs[0], name);
397 for (i = vec_size(parser->typedefs); i > upto;) {
399 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
405 /* include intrinsics */
410 size_t etype; /* 0 = expression, others are operators */
414 ast_block *block; /* for commas and function calls */
433 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
444 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
448 e.out = (ast_expression*)v;
455 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
457 e.etype = 1 + (op - operators);
466 static sy_elem syparen(lex_ctx ctx, size_t off) {
477 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
478 * so we need to rotate it to become ent.(foo[n]).
480 static bool rotate_entfield_array_index_nodes(ast_expression **out)
482 ast_array_index *index, *oldindex;
483 ast_entfield *entfield;
487 ast_expression *entity;
489 lex_ctx ctx = ast_ctx(*out);
491 if (!ast_istype(*out, ast_array_index))
493 index = (ast_array_index*)*out;
495 if (!ast_istype(index->array, ast_entfield))
497 entfield = (ast_entfield*)index->array;
499 if (!ast_istype(entfield->field, ast_value))
501 field = (ast_value*)entfield->field;
504 entity = entfield->entity;
508 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
509 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
510 *out = (ast_expression*)entfield;
512 oldindex->array = NULL;
513 oldindex->index = NULL;
514 ast_delete(oldindex);
519 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
521 switch (v->expression.vtype) {
523 return !!v->constval.vfloat;
525 return !!v->constval.vint;
527 if (OPTS_FLAG(CORRECT_LOGIC))
528 return v->constval.vvec.x &&
529 v->constval.vvec.y &&
532 return !!(v->constval.vvec.x);
534 if (!v->constval.vstring)
536 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
538 return !!v->constval.vstring[0];
540 compile_error(ctx, "internal error: immediate_is_true on invalid type");
541 return !!v->constval.vfunc;
545 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
549 ast_expression *out = NULL;
550 ast_expression *exprs[3];
551 ast_block *blocks[3];
552 ast_value *asvalue[3];
553 ast_binstore *asbinstore;
554 size_t i, assignop, addop, subop;
555 qcint generated_op = 0;
560 if (!vec_size(sy->ops)) {
561 parseerror(parser, "internal error: missing operator");
565 if (vec_last(sy->ops).isparen) {
566 parseerror(parser, "unmatched parenthesis");
570 op = &operators[vec_last(sy->ops).etype - 1];
571 ctx = vec_last(sy->ops).ctx;
573 if (vec_size(sy->out) < op->operands) {
574 compile_error(ctx, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
575 op->op, (int)op->id);
579 vec_shrinkby(sy->ops, 1);
581 /* op(:?) has no input and no output */
585 vec_shrinkby(sy->out, op->operands);
586 for (i = 0; i < op->operands; ++i) {
587 exprs[i] = sy->out[vec_size(sy->out)+i].out;
588 blocks[i] = sy->out[vec_size(sy->out)+i].block;
589 asvalue[i] = (ast_value*)exprs[i];
591 if (exprs[i]->vtype == TYPE_NOEXPR &&
592 !(i != 0 && op->id == opid2('?',':')) &&
593 !(i == 1 && op->id == opid1('.')))
595 if (ast_istype(exprs[i], ast_label))
596 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
598 compile_error(ast_ctx(exprs[i]), "not an expression");
599 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
603 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
604 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
608 #define NotSameType(T) \
609 (exprs[0]->vtype != exprs[1]->vtype || \
610 exprs[0]->vtype != T)
611 #define CanConstFold1(A) \
612 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
613 (A)->vtype != TYPE_FUNCTION)
614 #define CanConstFold(A, B) \
615 (CanConstFold1(A) && CanConstFold1(B))
616 #define ConstV(i) (asvalue[(i)]->constval.vvec)
617 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
618 #define ConstS(i) (asvalue[(i)]->constval.vstring)
622 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
626 if (exprs[0]->vtype == TYPE_VECTOR &&
627 exprs[1]->vtype == TYPE_NOEXPR)
629 if (exprs[1] == (ast_expression*)parser->const_vec[0])
630 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
631 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
632 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
633 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
634 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
636 compile_error(ctx, "access to invalid vector component");
640 else if (exprs[0]->vtype == TYPE_ENTITY) {
641 if (exprs[1]->vtype != TYPE_FIELD) {
642 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
645 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
647 else if (exprs[0]->vtype == TYPE_VECTOR) {
648 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
652 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
658 if (exprs[0]->vtype != TYPE_ARRAY &&
659 !(exprs[0]->vtype == TYPE_FIELD &&
660 exprs[0]->next->vtype == TYPE_ARRAY))
662 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
663 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
666 if (exprs[1]->vtype != TYPE_FLOAT) {
667 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
668 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
671 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
672 if (rotate_entfield_array_index_nodes(&out))
675 /* This is not broken in fteqcc anymore */
676 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
677 /* this error doesn't need to make us bail out */
678 (void)!parsewarning(parser, WARN_EXTENSIONS,
679 "accessing array-field members of an entity without parenthesis\n"
680 " -> this is an extension from -std=gmqcc");
687 if (vec_size(sy->paren) && vec_last(sy->paren) == PAREN_FUNC) {
688 vec_push(sy->out, syexp(ctx, exprs[0]));
689 vec_push(sy->out, syexp(ctx, exprs[1]));
690 vec_last(sy->argc)++;
694 if (!ast_block_add_expr(blocks[0], exprs[1]))
697 blocks[0] = ast_block_new(ctx);
698 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
699 !ast_block_add_expr(blocks[0], exprs[1]))
704 ast_block_set_type(blocks[0], exprs[1]);
706 vec_push(sy->out, syblock(ctx, blocks[0]));
713 switch (exprs[0]->vtype) {
715 if (CanConstFold1(exprs[0]))
716 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
718 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
719 (ast_expression*)parser_const_float_0(parser),
723 if (CanConstFold1(exprs[0]))
724 out = (ast_expression*)parser_const_vector_f(parser,
725 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
727 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
728 (ast_expression*)parser_const_vector_0(parser),
732 compile_error(ctx, "invalid types used in expression: cannot negate type %s",
733 type_name[exprs[0]->vtype]);
739 switch (exprs[0]->vtype) {
741 if (CanConstFold1(exprs[0]))
742 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
744 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
747 if (CanConstFold1(exprs[0]))
748 out = (ast_expression*)parser_const_float(parser,
749 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
751 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
754 if (CanConstFold1(exprs[0])) {
755 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
756 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
758 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
760 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
761 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
763 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
766 /* we don't constant-fold NOT for these types */
768 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
771 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
774 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
775 type_name[exprs[0]->vtype]);
781 if (exprs[0]->vtype != exprs[1]->vtype ||
782 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
784 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
785 type_name[exprs[0]->vtype],
786 type_name[exprs[1]->vtype]);
789 switch (exprs[0]->vtype) {
791 if (CanConstFold(exprs[0], exprs[1]))
793 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
796 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
799 if (CanConstFold(exprs[0], exprs[1]))
800 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
802 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
805 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
806 type_name[exprs[0]->vtype],
807 type_name[exprs[1]->vtype]);
812 if (exprs[0]->vtype != exprs[1]->vtype ||
813 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
815 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
816 type_name[exprs[1]->vtype],
817 type_name[exprs[0]->vtype]);
820 switch (exprs[0]->vtype) {
822 if (CanConstFold(exprs[0], exprs[1]))
823 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
825 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
828 if (CanConstFold(exprs[0], exprs[1]))
829 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
831 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
834 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
835 type_name[exprs[1]->vtype],
836 type_name[exprs[0]->vtype]);
841 if (exprs[0]->vtype != exprs[1]->vtype &&
842 !(exprs[0]->vtype == TYPE_VECTOR &&
843 exprs[1]->vtype == TYPE_FLOAT) &&
844 !(exprs[1]->vtype == TYPE_VECTOR &&
845 exprs[0]->vtype == TYPE_FLOAT)
848 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
849 type_name[exprs[1]->vtype],
850 type_name[exprs[0]->vtype]);
853 switch (exprs[0]->vtype) {
855 if (exprs[1]->vtype == TYPE_VECTOR)
857 if (CanConstFold(exprs[0], exprs[1]))
858 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
860 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
864 if (CanConstFold(exprs[0], exprs[1]))
865 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
867 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
871 if (exprs[1]->vtype == TYPE_FLOAT)
873 if (CanConstFold(exprs[0], exprs[1]))
874 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
876 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
880 if (CanConstFold(exprs[0], exprs[1]))
881 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
882 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[0])) {
883 vector vec = ConstV(0);
884 if (!vec.y && !vec.z) { /* 'n 0 0' * v */
885 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
886 out = (ast_expression*)ast_member_new(ctx, exprs[1], 0, NULL);
887 out->node.keep = false;
888 ((ast_member*)out)->rvalue = true;
890 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.x), out);
892 else if (!vec.x && !vec.z) { /* '0 n 0' * v */
893 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
894 out = (ast_expression*)ast_member_new(ctx, exprs[1], 1, NULL);
895 out->node.keep = false;
896 ((ast_member*)out)->rvalue = true;
898 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.y), out);
900 else if (!vec.x && !vec.y) { /* '0 n 0' * v */
901 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
902 out = (ast_expression*)ast_member_new(ctx, exprs[1], 2, NULL);
903 out->node.keep = false;
904 ((ast_member*)out)->rvalue = true;
906 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.z), out);
909 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
911 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[1])) {
912 vector vec = ConstV(1);
913 if (!vec.y && !vec.z) { /* v * 'n 0 0' */
914 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
915 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
916 out->node.keep = false;
917 ((ast_member*)out)->rvalue = true;
919 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.x));
921 else if (!vec.x && !vec.z) { /* v * '0 n 0' */
922 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
923 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
924 out->node.keep = false;
925 ((ast_member*)out)->rvalue = true;
927 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.y));
929 else if (!vec.x && !vec.y) { /* v * '0 n 0' */
930 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
931 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
932 out->node.keep = false;
933 ((ast_member*)out)->rvalue = true;
935 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.z));
938 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
941 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
945 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
946 type_name[exprs[1]->vtype],
947 type_name[exprs[0]->vtype]);
952 if (exprs[1]->vtype != TYPE_FLOAT) {
953 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
954 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
955 compile_error(ctx, "invalid types used in expression: cannot divide tyeps %s and %s", ty1, ty2);
958 if (exprs[0]->vtype == TYPE_FLOAT) {
959 if (CanConstFold(exprs[0], exprs[1]))
960 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
962 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
964 else if (exprs[0]->vtype == TYPE_VECTOR) {
965 if (CanConstFold(exprs[0], exprs[1]))
966 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), 1.0/ConstF(1)));
968 if (CanConstFold1(exprs[1])) {
969 out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
971 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
972 (ast_expression*)parser_const_float_1(parser),
976 compile_error(ctx, "internal error: failed to generate division");
979 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], out);
984 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
985 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
986 compile_error(ctx, "invalid types used in expression: cannot divide tyeps %s and %s", ty1, ty2);
992 if (NotSameType(TYPE_FLOAT)) {
993 compile_error(ctx, "invalid types used in expression: cannot perform modulo operation between types %s and %s",
994 type_name[exprs[0]->vtype],
995 type_name[exprs[1]->vtype]);
998 if (CanConstFold(exprs[0], exprs[1])) {
999 out = (ast_expression*)parser_const_float(parser,
1000 (float)(((qcint)ConstF(0)) % ((qcint)ConstF(1))));
1002 /* generate a call to __builtin_mod */
1003 ast_expression *mod = intrin_func(parser, "mod");
1004 ast_call *call = NULL;
1005 if (!mod) return false; /* can return null for missing floor */
1007 call = ast_call_new(parser_ctx(parser), mod);
1008 vec_push(call->params, exprs[0]);
1009 vec_push(call->params, exprs[1]);
1011 out = (ast_expression*)call;
1015 case opid2('%','='):
1016 compile_error(ctx, "%= is unimplemented");
1021 if (NotSameType(TYPE_FLOAT)) {
1022 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
1023 type_name[exprs[0]->vtype],
1024 type_name[exprs[1]->vtype]);
1027 if (CanConstFold(exprs[0], exprs[1]))
1028 out = (ast_expression*)parser_const_float(parser,
1029 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
1030 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
1032 out = (ast_expression*)ast_binary_new(ctx,
1033 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
1034 exprs[0], exprs[1]);
1037 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor via ^");
1040 case opid2('<','<'):
1041 case opid2('>','>'):
1042 if (CanConstFold(exprs[0], exprs[1]) && ! NotSameType(TYPE_FLOAT)) {
1043 if (op->id == opid2('<','<'))
1044 out = (ast_expression*)parser_const_float(parser, (double)((unsigned int)(ConstF(0)) << (unsigned int)(ConstF(1))));
1046 out = (ast_expression*)parser_const_float(parser, (double)((unsigned int)(ConstF(0)) >> (unsigned int)(ConstF(1))));
1049 case opid3('<','<','='):
1050 case opid3('>','>','='):
1051 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
1054 case opid2('|','|'):
1055 generated_op += 1; /* INSTR_OR */
1056 case opid2('&','&'):
1057 generated_op += INSTR_AND;
1058 if (CanConstFold(exprs[0], exprs[1]))
1060 if (OPTS_FLAG(PERL_LOGIC)) {
1061 if (immediate_is_true(ctx, asvalue[0]))
1065 out = (ast_expression*)parser_const_float(parser,
1066 ( (generated_op == INSTR_OR)
1067 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
1068 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
1073 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
1074 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1075 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1076 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
1079 for (i = 0; i < 2; ++i) {
1080 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->vtype == TYPE_VECTOR) {
1081 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
1083 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1085 exprs[i] = out; out = NULL;
1086 if (OPTS_FLAG(PERL_LOGIC)) {
1087 /* here we want to keep the right expressions' type */
1091 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->vtype == TYPE_STRING) {
1092 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
1094 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1096 exprs[i] = out; out = NULL;
1097 if (OPTS_FLAG(PERL_LOGIC)) {
1098 /* here we want to keep the right expressions' type */
1103 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1107 case opid2('?',':'):
1108 if (vec_last(sy->paren) != PAREN_TERNARY2) {
1109 compile_error(ctx, "mismatched parenthesis/ternary");
1113 if (!ast_compare_type(exprs[1], exprs[2])) {
1114 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
1115 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
1116 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
1119 if (CanConstFold1(exprs[0]))
1120 out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
1122 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
1125 case opid2('*', '*'):
1126 if (NotSameType(TYPE_FLOAT)) {
1127 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1128 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1129 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
1135 if (CanConstFold(exprs[0], exprs[1])) {
1136 out = (ast_expression*)parser_const_float(parser, powf(ConstF(0), ConstF(1)));
1138 ast_call *gencall = ast_call_new(parser_ctx(parser), intrin_func(parser, "pow"));
1139 vec_push(gencall->params, exprs[0]);
1140 vec_push(gencall->params, exprs[1]);
1141 out = (ast_expression*)gencall;
1145 case opid3('<','=','>'): /* -1, 0, or 1 */
1146 if (NotSameType(TYPE_FLOAT)) {
1147 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1148 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1149 compile_error(ctx, "invalid types used in comparision: %s and %s",
1155 if (CanConstFold(exprs[0], exprs[1])) {
1156 if (ConstF(0) < ConstF(1))
1157 out = (ast_expression*)parser_const_float_neg1(parser);
1158 else if (ConstF(0) == ConstF(1))
1159 out = (ast_expression*)parser_const_float_0(parser);
1160 else if (ConstF(0) > ConstF(1))
1161 out = (ast_expression*)parser_const_float_1(parser);
1163 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
1165 eq->refs = (ast_binary_ref)false; /* references nothing */
1168 out = (ast_expression*)ast_ternary_new(ctx,
1169 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
1171 (ast_expression*)parser_const_float_neg1(parser),
1174 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
1176 (ast_expression*)parser_const_float_0(parser),
1179 (ast_expression*)parser_const_float_1(parser)
1189 generated_op += 1; /* INSTR_GT */
1191 generated_op += 1; /* INSTR_LT */
1192 case opid2('>', '='):
1193 generated_op += 1; /* INSTR_GE */
1194 case opid2('<', '='):
1195 generated_op += INSTR_LE;
1196 if (NotSameType(TYPE_FLOAT)) {
1197 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1198 type_name[exprs[0]->vtype],
1199 type_name[exprs[1]->vtype]);
1202 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1204 case opid2('!', '='):
1205 if (exprs[0]->vtype != exprs[1]->vtype) {
1206 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1207 type_name[exprs[0]->vtype],
1208 type_name[exprs[1]->vtype]);
1211 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->vtype], exprs[0], exprs[1]);
1213 case opid2('=', '='):
1214 if (exprs[0]->vtype != exprs[1]->vtype) {
1215 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1216 type_name[exprs[0]->vtype],
1217 type_name[exprs[1]->vtype]);
1220 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->vtype], exprs[0], exprs[1]);
1224 if (ast_istype(exprs[0], ast_entfield)) {
1225 ast_expression *field = ((ast_entfield*)exprs[0])->field;
1226 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1227 exprs[0]->vtype == TYPE_FIELD &&
1228 exprs[0]->next->vtype == TYPE_VECTOR)
1230 assignop = type_storep_instr[TYPE_VECTOR];
1233 assignop = type_storep_instr[exprs[0]->vtype];
1234 if (assignop == VINSTR_END || !ast_compare_type(field->next, exprs[1]))
1236 ast_type_to_string(field->next, ty1, sizeof(ty1));
1237 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1238 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1239 field->next->vtype == TYPE_FUNCTION &&
1240 exprs[1]->vtype == TYPE_FUNCTION)
1242 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1243 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1246 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1251 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1252 exprs[0]->vtype == TYPE_FIELD &&
1253 exprs[0]->next->vtype == TYPE_VECTOR)
1255 assignop = type_store_instr[TYPE_VECTOR];
1258 assignop = type_store_instr[exprs[0]->vtype];
1261 if (assignop == VINSTR_END) {
1262 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1263 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1264 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1266 else if (!ast_compare_type(exprs[0], exprs[1]))
1268 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1269 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1270 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1271 exprs[0]->vtype == TYPE_FUNCTION &&
1272 exprs[1]->vtype == TYPE_FUNCTION)
1274 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1275 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1278 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1281 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1282 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1284 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1286 case opid3('+','+','P'):
1287 case opid3('-','-','P'):
1289 if (exprs[0]->vtype != TYPE_FLOAT) {
1290 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1291 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
1294 if (op->id == opid3('+','+','P'))
1295 addop = INSTR_ADD_F;
1297 addop = INSTR_SUB_F;
1298 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1299 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1301 if (ast_istype(exprs[0], ast_entfield)) {
1302 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1304 (ast_expression*)parser_const_float_1(parser));
1306 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1308 (ast_expression*)parser_const_float_1(parser));
1311 case opid3('S','+','+'):
1312 case opid3('S','-','-'):
1314 if (exprs[0]->vtype != TYPE_FLOAT) {
1315 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1316 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
1319 if (op->id == opid3('S','+','+')) {
1320 addop = INSTR_ADD_F;
1321 subop = INSTR_SUB_F;
1323 addop = INSTR_SUB_F;
1324 subop = INSTR_ADD_F;
1326 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1327 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1329 if (ast_istype(exprs[0], ast_entfield)) {
1330 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1332 (ast_expression*)parser_const_float_1(parser));
1334 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1336 (ast_expression*)parser_const_float_1(parser));
1340 out = (ast_expression*)ast_binary_new(ctx, subop,
1342 (ast_expression*)parser_const_float_1(parser));
1344 case opid2('+','='):
1345 case opid2('-','='):
1346 if (exprs[0]->vtype != exprs[1]->vtype ||
1347 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
1349 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1350 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1351 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1355 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1356 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1358 if (ast_istype(exprs[0], ast_entfield))
1359 assignop = type_storep_instr[exprs[0]->vtype];
1361 assignop = type_store_instr[exprs[0]->vtype];
1362 switch (exprs[0]->vtype) {
1364 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1365 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1366 exprs[0], exprs[1]);
1369 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1370 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1371 exprs[0], exprs[1]);
1374 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1375 type_name[exprs[0]->vtype],
1376 type_name[exprs[1]->vtype]);
1380 case opid2('*','='):
1381 case opid2('/','='):
1382 if (exprs[1]->vtype != TYPE_FLOAT ||
1383 !(exprs[0]->vtype == TYPE_FLOAT ||
1384 exprs[0]->vtype == TYPE_VECTOR))
1386 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1387 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1388 compile_error(ctx, "invalid types used in expression: %s and %s",
1392 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1393 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1395 if (ast_istype(exprs[0], ast_entfield))
1396 assignop = type_storep_instr[exprs[0]->vtype];
1398 assignop = type_store_instr[exprs[0]->vtype];
1399 switch (exprs[0]->vtype) {
1401 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1402 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1403 exprs[0], exprs[1]);
1406 if (op->id == opid2('*','=')) {
1407 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1408 exprs[0], exprs[1]);
1410 /* there's no DIV_VF */
1411 if (CanConstFold1(exprs[1])) {
1412 out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
1414 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1415 (ast_expression*)parser_const_float_1(parser),
1419 compile_error(ctx, "internal error: failed to generate division");
1422 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1427 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1428 type_name[exprs[0]->vtype],
1429 type_name[exprs[1]->vtype]);
1433 case opid2('&','='):
1434 case opid2('|','='):
1435 if (NotSameType(TYPE_FLOAT)) {
1436 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1437 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1438 compile_error(ctx, "invalid types used in expression: %s and %s",
1442 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1443 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1445 if (ast_istype(exprs[0], ast_entfield))
1446 assignop = type_storep_instr[exprs[0]->vtype];
1448 assignop = type_store_instr[exprs[0]->vtype];
1449 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1450 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1451 exprs[0], exprs[1]);
1453 case opid3('&','~','='):
1454 /* This is like: a &= ~(b);
1455 * But QC has no bitwise-not, so we implement it as
1458 if (NotSameType(TYPE_FLOAT)) {
1459 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1460 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1461 compile_error(ctx, "invalid types used in expression: %s and %s",
1465 if (ast_istype(exprs[0], ast_entfield))
1466 assignop = type_storep_instr[exprs[0]->vtype];
1468 assignop = type_store_instr[exprs[0]->vtype];
1469 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1472 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1473 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1475 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1476 asbinstore->keep_dest = true;
1477 out = (ast_expression*)asbinstore;
1480 case opid2('~', 'P'):
1481 if (exprs[0]->vtype != TYPE_FLOAT) {
1482 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1483 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1487 if(CanConstFold1(exprs[0]))
1488 out = (ast_expression*)parser_const_float(parser, ~(qcint)ConstF(0));
1490 out = (ast_expression*)
1491 ast_binary_new(ctx, INSTR_SUB_F, (ast_expression*)parser_const_float_neg1(parser), exprs[0]);
1497 compile_error(ctx, "failed to apply operator %s", op->op);
1501 vec_push(sy->out, syexp(ctx, out));
1505 static bool parser_close_call(parser_t *parser, shunt *sy)
1507 /* was a function call */
1508 ast_expression *fun;
1509 ast_value *funval = NULL;
1513 size_t paramcount, i;
1515 fid = vec_last(sy->ops).off;
1516 vec_shrinkby(sy->ops, 1);
1518 /* out[fid] is the function
1519 * everything above is parameters...
1521 if (!vec_size(sy->argc)) {
1522 parseerror(parser, "internal error: no argument counter available");
1526 paramcount = vec_last(sy->argc);
1529 if (vec_size(sy->out) < fid) {
1530 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1531 (unsigned long)vec_size(sy->out),
1533 (unsigned long)paramcount);
1537 fun = sy->out[fid].out;
1539 if (fun == intrinsic_debug_typestring) {
1541 if (fid+2 != vec_size(sy->out) ||
1542 vec_last(sy->out).block)
1544 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1547 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1548 ast_unref(vec_last(sy->out).out);
1549 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1550 (ast_expression*)parser_const_string(parser, ty, false));
1551 vec_shrinkby(sy->out, 1);
1555 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1559 if (fid+1 < vec_size(sy->out))
1562 if (fid+1 + paramcount != vec_size(sy->out)) {
1563 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1564 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1568 for (i = 0; i < paramcount; ++i)
1569 vec_push(call->params, sy->out[fid+1 + i].out);
1570 vec_shrinkby(sy->out, paramcount);
1571 (void)!ast_call_check_types(call);
1572 if (parser->max_param_count < paramcount)
1573 parser->max_param_count = paramcount;
1575 if (ast_istype(fun, ast_value)) {
1576 funval = (ast_value*)fun;
1577 if ((fun->flags & AST_FLAG_VARIADIC) &&
1578 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1580 call->va_count = (ast_expression*)parser_const_float(parser, (double)paramcount);
1584 /* overwrite fid, the function, with a call */
1585 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1587 if (fun->vtype != TYPE_FUNCTION) {
1588 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1593 parseerror(parser, "could not determine function return type");
1596 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1598 if (fun->flags & AST_FLAG_DEPRECATED) {
1600 return !parsewarning(parser, WARN_DEPRECATED,
1601 "call to function (which is marked deprecated)\n",
1602 "-> it has been declared here: %s:%i",
1603 ast_ctx(fun).file, ast_ctx(fun).line);
1606 return !parsewarning(parser, WARN_DEPRECATED,
1607 "call to `%s` (which is marked deprecated)\n"
1608 "-> `%s` declared here: %s:%i",
1609 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1611 return !parsewarning(parser, WARN_DEPRECATED,
1612 "call to `%s` (deprecated: %s)\n"
1613 "-> `%s` declared here: %s:%i",
1614 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1618 if (vec_size(fun->params) != paramcount &&
1619 !((fun->flags & AST_FLAG_VARIADIC) &&
1620 vec_size(fun->params) < paramcount))
1622 const char *fewmany = (vec_size(fun->params) > paramcount) ? "few" : "many";
1624 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1625 "too %s parameters for call to %s: expected %i, got %i\n"
1626 " -> `%s` has been declared here: %s:%i",
1627 fewmany, fval->name, (int)vec_size(fun->params), (int)paramcount,
1628 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1630 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1631 "too %s parameters for function call: expected %i, got %i\n"
1632 " -> it has been declared here: %s:%i",
1633 fewmany, (int)vec_size(fun->params), (int)paramcount,
1634 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1641 static bool parser_close_paren(parser_t *parser, shunt *sy)
1643 if (!vec_size(sy->ops)) {
1644 parseerror(parser, "unmatched closing paren");
1648 while (vec_size(sy->ops)) {
1649 if (vec_last(sy->ops).isparen) {
1650 if (vec_last(sy->paren) == PAREN_FUNC) {
1652 if (!parser_close_call(parser, sy))
1656 if (vec_last(sy->paren) == PAREN_EXPR) {
1658 if (!vec_size(sy->out)) {
1659 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1660 vec_shrinkby(sy->ops, 1);
1663 vec_shrinkby(sy->ops, 1);
1666 if (vec_last(sy->paren) == PAREN_INDEX) {
1668 /* pop off the parenthesis */
1669 vec_shrinkby(sy->ops, 1);
1670 /* then apply the index operator */
1671 if (!parser_sy_apply_operator(parser, sy))
1675 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1676 vec_last(sy->paren) = PAREN_TERNARY2;
1677 /* pop off the parenthesis */
1678 vec_shrinkby(sy->ops, 1);
1681 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1684 if (!parser_sy_apply_operator(parser, sy))
1690 static void parser_reclassify_token(parser_t *parser)
1693 if (parser->tok >= TOKEN_START)
1695 for (i = 0; i < operator_count; ++i) {
1696 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1697 parser->tok = TOKEN_OPERATOR;
1703 static ast_expression* parse_vararg_do(parser_t *parser)
1705 ast_expression *idx, *out;
1707 ast_value *funtype = parser->function->vtype;
1709 lex_ctx ctx = parser_ctx(parser);
1711 if (!parser_next(parser) || parser->tok != '(') {
1712 parseerror(parser, "expected parameter index and type in parenthesis");
1715 if (!parser_next(parser)) {
1716 parseerror(parser, "error parsing parameter index");
1720 idx = parse_expression_leave(parser, true, false, false);
1724 if (parser->tok != ',') {
1726 parseerror(parser, "expected comma after parameter index");
1730 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1732 parseerror(parser, "expected typename for vararg");
1736 typevar = parse_typename(parser, NULL, NULL);
1742 if (parser->tok != ')') {
1744 ast_delete(typevar);
1745 parseerror(parser, "expected closing paren");
1750 if (!parser_next(parser)) {
1752 ast_delete(typevar);
1753 parseerror(parser, "parse error after vararg");
1758 if (!parser->function->varargs) {
1760 ast_delete(typevar);
1761 parseerror(parser, "function has no variable argument list");
1765 if (funtype->expression.varparam &&
1766 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1770 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1771 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1772 compile_error(ast_ctx(typevar),
1773 "function was declared to take varargs of type `%s`, requested type is: %s",
1777 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1778 ast_type_adopt(out, typevar);
1779 ast_delete(typevar);
1783 static ast_expression* parse_vararg(parser_t *parser)
1785 bool old_noops = parser->lex->flags.noops;
1787 ast_expression *out;
1789 parser->lex->flags.noops = true;
1790 out = parse_vararg_do(parser);
1792 parser->lex->flags.noops = old_noops;
1796 /* not to be exposed */
1797 extern bool ftepp_predef_exists(const char *name);
1799 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1801 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1802 parser->tok == TOKEN_IDENT &&
1803 !strcmp(parser_tokval(parser), "_"))
1805 /* a translatable string */
1808 parser->lex->flags.noops = true;
1809 if (!parser_next(parser) || parser->tok != '(') {
1810 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1813 parser->lex->flags.noops = false;
1814 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1815 parseerror(parser, "expected a constant string in translatable-string extension");
1818 val = parser_const_string(parser, parser_tokval(parser), true);
1821 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1823 if (!parser_next(parser) || parser->tok != ')') {
1824 parseerror(parser, "expected closing paren after translatable string");
1829 else if (parser->tok == TOKEN_DOTS)
1832 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1833 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1836 va = parse_vararg(parser);
1839 vec_push(sy->out, syexp(parser_ctx(parser), va));
1842 else if (parser->tok == TOKEN_FLOATCONST) {
1844 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1847 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1850 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1852 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1855 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1858 else if (parser->tok == TOKEN_STRINGCONST) {
1860 val = parser_const_string(parser, parser_tokval(parser), false);
1863 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1866 else if (parser->tok == TOKEN_VECTORCONST) {
1868 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1871 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1874 else if (parser->tok == TOKEN_IDENT)
1876 const char *ctoken = parser_tokval(parser);
1877 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1878 ast_expression *var;
1879 /* a_vector.{x,y,z} */
1880 if (!vec_size(sy->ops) ||
1881 !vec_last(sy->ops).etype ||
1882 operators[vec_last(sy->ops).etype-1].id != opid1('.') ||
1883 (prev >= intrinsic_debug_typestring &&
1884 prev <= intrinsic_debug_typestring))
1886 /* When adding more intrinsics, fix the above condition */
1889 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1891 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1893 var = parser_find_var(parser, parser_tokval(parser));
1895 var = parser_find_field(parser, parser_tokval(parser));
1897 if (!var && with_labels) {
1898 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1900 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1901 var = (ast_expression*)lbl;
1902 vec_push(parser->labels, lbl);
1905 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
1906 var = (ast_expression*)parser_const_string(parser, parser->function->name, false);
1909 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1910 var = (ast_expression*)intrinsic_debug_typestring;
1912 /* now we try for the real intrinsic hashtable. If the string
1913 * begins with __builtin, we simply skip past it, otherwise we
1914 * use the identifier as is.
1916 else if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
1917 var = intrin_func(parser, parser_tokval(parser) + 10 /* skip __builtin */);
1921 char *correct = NULL;
1925 * sometimes people use preprocessing predefs without enabling them
1926 * i've done this thousands of times already myself. Lets check for
1927 * it in the predef table. And diagnose it better :)
1929 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
1930 parseerror(parser, "unexpected ident: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1935 * TODO: determine the best score for the identifier: be it
1936 * a variable, a field.
1938 * We should also consider adding correction tables for
1939 * other things as well.
1941 if (OPTS_OPTION_BOOL(OPTION_CORRECTION) && strlen(parser_tokval(parser)) <= 16) {
1943 correct_init(&corr);
1945 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1946 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1947 if (strcmp(correct, parser_tokval(parser))) {
1949 } else if (correct) {
1954 correct_free(&corr);
1957 parseerror(parser, "unexpected ident: %s (did you mean %s?)", parser_tokval(parser), correct);
1962 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1968 if (ast_istype(var, ast_value)) {
1969 ((ast_value*)var)->uses++;
1971 else if (ast_istype(var, ast_member)) {
1972 ast_member *mem = (ast_member*)var;
1973 if (ast_istype(mem->owner, ast_value))
1974 ((ast_value*)(mem->owner))->uses++;
1977 vec_push(sy->out, syexp(parser_ctx(parser), var));
1980 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1984 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1986 ast_expression *expr = NULL;
1989 bool wantop = false;
1990 /* only warn once about an assignment in a truth value because the current code
1991 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1993 bool warn_truthvalue = true;
1995 /* count the parens because an if starts with one, so the
1996 * end of a condition is an unmatched closing paren
2000 memset(&sy, 0, sizeof(sy));
2002 parser->lex->flags.noops = false;
2004 parser_reclassify_token(parser);
2008 if (parser->tok == TOKEN_TYPENAME) {
2009 parseerror(parser, "unexpected typename");
2013 if (parser->tok == TOKEN_OPERATOR)
2015 /* classify the operator */
2016 const oper_info *op;
2017 const oper_info *olast = NULL;
2019 for (o = 0; o < operator_count; ++o) {
2020 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
2021 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
2022 !strcmp(parser_tokval(parser), operators[o].op))
2027 if (o == operator_count) {
2028 compile_error(parser_ctx(parser), "unknown operator: %s", parser_tokval(parser));
2031 /* found an operator */
2034 /* when declaring variables, a comma starts a new variable */
2035 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
2036 /* fixup the token */
2041 /* a colon without a pervious question mark cannot be a ternary */
2042 if (!ternaries && op->id == opid2(':','?')) {
2047 if (op->id == opid1(',')) {
2048 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2049 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
2053 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2054 olast = &operators[vec_last(sy.ops).etype-1];
2056 #define IsAssignOp(x) (\
2057 (x) == opid1('=') || \
2058 (x) == opid2('+','=') || \
2059 (x) == opid2('-','=') || \
2060 (x) == opid2('*','=') || \
2061 (x) == opid2('/','=') || \
2062 (x) == opid2('%','=') || \
2063 (x) == opid2('&','=') || \
2064 (x) == opid2('|','=') || \
2065 (x) == opid3('&','~','=') \
2067 if (warn_truthvalue) {
2068 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
2069 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
2070 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
2073 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
2074 warn_truthvalue = false;
2079 (op->prec < olast->prec) ||
2080 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
2082 if (!parser_sy_apply_operator(parser, &sy))
2084 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2085 olast = &operators[vec_last(sy.ops).etype-1];
2090 if (op->id == opid1('(')) {
2092 size_t sycount = vec_size(sy.out);
2093 /* we expected an operator, this is the function-call operator */
2094 vec_push(sy.paren, PAREN_FUNC);
2095 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
2096 vec_push(sy.argc, 0);
2098 vec_push(sy.paren, PAREN_EXPR);
2099 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2102 } else if (op->id == opid1('[')) {
2104 parseerror(parser, "unexpected array subscript");
2107 vec_push(sy.paren, PAREN_INDEX);
2108 /* push both the operator and the paren, this makes life easier */
2109 vec_push(sy.ops, syop(parser_ctx(parser), op));
2110 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2112 } else if (op->id == opid2('?',':')) {
2113 vec_push(sy.ops, syop(parser_ctx(parser), op));
2114 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2117 vec_push(sy.paren, PAREN_TERNARY1);
2118 } else if (op->id == opid2(':','?')) {
2119 if (!vec_size(sy.paren)) {
2120 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2123 if (vec_last(sy.paren) != PAREN_TERNARY1) {
2124 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2127 if (!parser_close_paren(parser, &sy))
2129 vec_push(sy.ops, syop(parser_ctx(parser), op));
2133 vec_push(sy.ops, syop(parser_ctx(parser), op));
2134 wantop = !!(op->flags & OP_SUFFIX);
2137 else if (parser->tok == ')') {
2138 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2139 if (!parser_sy_apply_operator(parser, &sy))
2142 if (!vec_size(sy.paren))
2145 if (vec_last(sy.paren) == PAREN_TERNARY1) {
2146 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
2149 if (!parser_close_paren(parser, &sy))
2152 /* must be a function call without parameters */
2153 if (vec_last(sy.paren) != PAREN_FUNC) {
2154 parseerror(parser, "closing paren in invalid position");
2157 if (!parser_close_paren(parser, &sy))
2162 else if (parser->tok == '(') {
2163 parseerror(parser, "internal error: '(' should be classified as operator");
2166 else if (parser->tok == '[') {
2167 parseerror(parser, "internal error: '[' should be classified as operator");
2170 else if (parser->tok == ']') {
2171 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2172 if (!parser_sy_apply_operator(parser, &sy))
2175 if (!vec_size(sy.paren))
2177 if (vec_last(sy.paren) != PAREN_INDEX) {
2178 parseerror(parser, "mismatched parentheses, unexpected ']'");
2181 if (!parser_close_paren(parser, &sy))
2186 if (!parse_sya_operand(parser, &sy, with_labels))
2189 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
2190 vec_last(sy.argc)++;
2195 /* in this case we might want to allow constant string concatenation */
2196 bool concatenated = false;
2197 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
2198 ast_expression *lexpr = vec_last(sy.out).out;
2199 if (ast_istype(lexpr, ast_value)) {
2200 ast_value *last = (ast_value*)lexpr;
2201 if (last->isimm == true && last->cvq == CV_CONST &&
2202 last->hasvalue && last->expression.vtype == TYPE_STRING)
2204 char *newstr = NULL;
2205 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
2206 vec_last(sy.out).out = (ast_expression*)parser_const_string(parser, newstr, false);
2208 concatenated = true;
2212 if (!concatenated) {
2213 parseerror(parser, "expected operator or end of statement");
2218 if (!parser_next(parser)) {
2221 if (parser->tok == ';' ||
2222 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
2223 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
2229 while (vec_size(sy.ops)) {
2230 if (!parser_sy_apply_operator(parser, &sy))
2234 parser->lex->flags.noops = true;
2235 if (vec_size(sy.out) != 1) {
2236 parseerror(parser, "expression with not 1 but %lu output values...", (unsigned long) vec_size(sy.out));
2239 expr = sy.out[0].out;
2242 if (vec_size(sy.paren)) {
2243 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
2251 parser->lex->flags.noops = true;
2252 for (i = 0; i < vec_size(sy.out); ++i) {
2254 ast_unref(sy.out[i].out);
2263 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
2265 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
2268 if (parser->tok != ';') {
2269 parseerror(parser, "semicolon expected after expression");
2273 if (!parser_next(parser)) {
2280 static void parser_enterblock(parser_t *parser)
2282 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2283 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2284 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2285 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2286 vec_push(parser->_block_ctx, parser_ctx(parser));
2289 vec_push(parser->correct_variables, correct_trie_new());
2290 vec_push(parser->correct_variables_score, NULL);
2293 static bool parser_leaveblock(parser_t *parser)
2296 size_t locals, typedefs;
2298 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2299 parseerror(parser, "internal error: parser_leaveblock with no block");
2303 util_htdel(vec_last(parser->variables));
2304 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2306 vec_pop(parser->variables);
2307 vec_pop(parser->correct_variables);
2308 vec_pop(parser->correct_variables_score);
2309 if (!vec_size(parser->_blocklocals)) {
2310 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2314 locals = vec_last(parser->_blocklocals);
2315 vec_pop(parser->_blocklocals);
2316 while (vec_size(parser->_locals) != locals) {
2317 ast_expression *e = vec_last(parser->_locals);
2318 ast_value *v = (ast_value*)e;
2319 vec_pop(parser->_locals);
2320 if (ast_istype(e, ast_value) && !v->uses) {
2321 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2326 typedefs = vec_last(parser->_blocktypedefs);
2327 while (vec_size(parser->_typedefs) != typedefs) {
2328 ast_delete(vec_last(parser->_typedefs));
2329 vec_pop(parser->_typedefs);
2331 util_htdel(vec_last(parser->typedefs));
2332 vec_pop(parser->typedefs);
2334 vec_pop(parser->_block_ctx);
2339 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2341 vec_push(parser->_locals, e);
2342 util_htset(vec_last(parser->variables), name, (void*)e);
2346 vec_last(parser->correct_variables),
2347 &vec_last(parser->correct_variables_score),
2352 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2354 vec_push(parser->globals, e);
2355 util_htset(parser->htglobals, name, e);
2359 parser->correct_variables[0],
2360 &parser->correct_variables_score[0],
2365 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2369 ast_expression *prev;
2371 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2373 ast_type_to_string(cond, ty, sizeof(ty));
2374 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2377 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2380 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2383 parseerror(parser, "internal error: failed to process condition");
2388 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2390 /* vector types need to be cast to true booleans */
2391 ast_binary *bin = (ast_binary*)cond;
2392 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2394 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2396 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2399 parseerror(parser, "internal error: failed to process condition");
2406 unary = (ast_unary*)cond;
2407 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2409 cond = unary->operand;
2410 unary->operand = NULL;
2413 unary = (ast_unary*)cond;
2417 parseerror(parser, "internal error: failed to process condition");
2419 if (ifnot) *_ifnot = !*_ifnot;
2423 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2426 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2429 lex_ctx ctx = parser_ctx(parser);
2431 (void)block; /* not touching */
2433 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2434 if (!parser_next(parser)) {
2435 parseerror(parser, "expected condition or 'not'");
2438 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2440 if (!parser_next(parser)) {
2441 parseerror(parser, "expected condition in parenthesis");
2445 if (parser->tok != '(') {
2446 parseerror(parser, "expected 'if' condition in parenthesis");
2449 /* parse into the expression */
2450 if (!parser_next(parser)) {
2451 parseerror(parser, "expected 'if' condition after opening paren");
2454 /* parse the condition */
2455 cond = parse_expression_leave(parser, false, true, false);
2459 if (parser->tok != ')') {
2460 parseerror(parser, "expected closing paren after 'if' condition");
2464 /* parse into the 'then' branch */
2465 if (!parser_next(parser)) {
2466 parseerror(parser, "expected statement for on-true branch of 'if'");
2470 if (!parse_statement_or_block(parser, &ontrue)) {
2475 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2476 /* check for an else */
2477 if (!strcmp(parser_tokval(parser), "else")) {
2478 /* parse into the 'else' branch */
2479 if (!parser_next(parser)) {
2480 parseerror(parser, "expected on-false branch after 'else'");
2485 if (!parse_statement_or_block(parser, &onfalse)) {
2492 cond = process_condition(parser, cond, &ifnot);
2494 if (ontrue) ast_delete(ontrue);
2495 if (onfalse) ast_delete(onfalse);
2500 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2502 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2503 *out = (ast_expression*)ifthen;
2507 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2508 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2513 /* skip the 'while' and get the body */
2514 if (!parser_next(parser)) {
2515 if (OPTS_FLAG(LOOP_LABELS))
2516 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2518 parseerror(parser, "expected 'while' condition in parenthesis");
2522 if (parser->tok == ':') {
2523 if (!OPTS_FLAG(LOOP_LABELS))
2524 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2525 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2526 parseerror(parser, "expected loop label");
2529 label = util_strdup(parser_tokval(parser));
2530 if (!parser_next(parser)) {
2532 parseerror(parser, "expected 'while' condition in parenthesis");
2537 if (parser->tok != '(') {
2538 parseerror(parser, "expected 'while' condition in parenthesis");
2542 vec_push(parser->breaks, label);
2543 vec_push(parser->continues, label);
2545 rv = parse_while_go(parser, block, out);
2548 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2549 parseerror(parser, "internal error: label stack corrupted");
2555 vec_pop(parser->breaks);
2556 vec_pop(parser->continues);
2561 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2564 ast_expression *cond, *ontrue;
2568 lex_ctx ctx = parser_ctx(parser);
2570 (void)block; /* not touching */
2572 /* parse into the expression */
2573 if (!parser_next(parser)) {
2574 parseerror(parser, "expected 'while' condition after opening paren");
2577 /* parse the condition */
2578 cond = parse_expression_leave(parser, false, true, false);
2582 if (parser->tok != ')') {
2583 parseerror(parser, "expected closing paren after 'while' condition");
2587 /* parse into the 'then' branch */
2588 if (!parser_next(parser)) {
2589 parseerror(parser, "expected while-loop body");
2593 if (!parse_statement_or_block(parser, &ontrue)) {
2598 cond = process_condition(parser, cond, &ifnot);
2603 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2604 *out = (ast_expression*)aloop;
2608 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2609 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2614 /* skip the 'do' and get the body */
2615 if (!parser_next(parser)) {
2616 if (OPTS_FLAG(LOOP_LABELS))
2617 parseerror(parser, "expected loop label or body");
2619 parseerror(parser, "expected loop body");
2623 if (parser->tok == ':') {
2624 if (!OPTS_FLAG(LOOP_LABELS))
2625 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2626 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2627 parseerror(parser, "expected loop label");
2630 label = util_strdup(parser_tokval(parser));
2631 if (!parser_next(parser)) {
2633 parseerror(parser, "expected loop body");
2638 vec_push(parser->breaks, label);
2639 vec_push(parser->continues, label);
2641 rv = parse_dowhile_go(parser, block, out);
2644 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2645 parseerror(parser, "internal error: label stack corrupted");
2651 vec_pop(parser->breaks);
2652 vec_pop(parser->continues);
2657 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2660 ast_expression *cond, *ontrue;
2664 lex_ctx ctx = parser_ctx(parser);
2666 (void)block; /* not touching */
2668 if (!parse_statement_or_block(parser, &ontrue))
2671 /* expect the "while" */
2672 if (parser->tok != TOKEN_KEYWORD ||
2673 strcmp(parser_tokval(parser), "while"))
2675 parseerror(parser, "expected 'while' and condition");
2680 /* skip the 'while' and check for opening paren */
2681 if (!parser_next(parser) || parser->tok != '(') {
2682 parseerror(parser, "expected 'while' condition in parenthesis");
2686 /* parse into the expression */
2687 if (!parser_next(parser)) {
2688 parseerror(parser, "expected 'while' condition after opening paren");
2692 /* parse the condition */
2693 cond = parse_expression_leave(parser, false, true, false);
2697 if (parser->tok != ')') {
2698 parseerror(parser, "expected closing paren after 'while' condition");
2704 if (!parser_next(parser) || parser->tok != ';') {
2705 parseerror(parser, "expected semicolon after condition");
2711 if (!parser_next(parser)) {
2712 parseerror(parser, "parse error");
2718 cond = process_condition(parser, cond, &ifnot);
2723 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2724 *out = (ast_expression*)aloop;
2728 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2729 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2734 /* skip the 'for' and check for opening paren */
2735 if (!parser_next(parser)) {
2736 if (OPTS_FLAG(LOOP_LABELS))
2737 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2739 parseerror(parser, "expected 'for' expressions in parenthesis");
2743 if (parser->tok == ':') {
2744 if (!OPTS_FLAG(LOOP_LABELS))
2745 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2746 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2747 parseerror(parser, "expected loop label");
2750 label = util_strdup(parser_tokval(parser));
2751 if (!parser_next(parser)) {
2753 parseerror(parser, "expected 'for' expressions in parenthesis");
2758 if (parser->tok != '(') {
2759 parseerror(parser, "expected 'for' expressions in parenthesis");
2763 vec_push(parser->breaks, label);
2764 vec_push(parser->continues, label);
2766 rv = parse_for_go(parser, block, out);
2769 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2770 parseerror(parser, "internal error: label stack corrupted");
2776 vec_pop(parser->breaks);
2777 vec_pop(parser->continues);
2781 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2784 ast_expression *initexpr, *cond, *increment, *ontrue;
2789 lex_ctx ctx = parser_ctx(parser);
2791 parser_enterblock(parser);
2798 /* parse into the expression */
2799 if (!parser_next(parser)) {
2800 parseerror(parser, "expected 'for' initializer after opening paren");
2805 if (parser->tok == TOKEN_IDENT)
2806 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2808 if (typevar || parser->tok == TOKEN_TYPENAME) {
2810 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2811 if (parsewarning(parser, WARN_EXTENSIONS,
2812 "current standard does not allow variable declarations in for-loop initializers"))
2816 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2819 else if (parser->tok != ';')
2821 initexpr = parse_expression_leave(parser, false, false, false);
2826 /* move on to condition */
2827 if (parser->tok != ';') {
2828 parseerror(parser, "expected semicolon after for-loop initializer");
2831 if (!parser_next(parser)) {
2832 parseerror(parser, "expected for-loop condition");
2836 /* parse the condition */
2837 if (parser->tok != ';') {
2838 cond = parse_expression_leave(parser, false, true, false);
2843 /* move on to incrementor */
2844 if (parser->tok != ';') {
2845 parseerror(parser, "expected semicolon after for-loop initializer");
2848 if (!parser_next(parser)) {
2849 parseerror(parser, "expected for-loop condition");
2853 /* parse the incrementor */
2854 if (parser->tok != ')') {
2855 lex_ctx condctx = parser_ctx(parser);
2856 increment = parse_expression_leave(parser, false, false, false);
2859 if (!ast_side_effects(increment)) {
2860 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2866 if (parser->tok != ')') {
2867 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2870 /* parse into the 'then' branch */
2871 if (!parser_next(parser)) {
2872 parseerror(parser, "expected for-loop body");
2875 if (!parse_statement_or_block(parser, &ontrue))
2879 cond = process_condition(parser, cond, &ifnot);
2883 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2884 *out = (ast_expression*)aloop;
2886 if (!parser_leaveblock(parser)) {
2892 if (initexpr) ast_unref(initexpr);
2893 if (cond) ast_unref(cond);
2894 if (increment) ast_unref(increment);
2895 (void)!parser_leaveblock(parser);
2899 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2901 ast_expression *exp = NULL;
2902 ast_expression *var = NULL;
2903 ast_return *ret = NULL;
2904 ast_value *retval = parser->function->return_value;
2905 ast_value *expected = parser->function->vtype;
2907 lex_ctx ctx = parser_ctx(parser);
2909 (void)block; /* not touching */
2911 if (!parser_next(parser)) {
2912 parseerror(parser, "expected return expression");
2916 /* return assignments */
2917 if (parser->tok == '=') {
2918 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
2919 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
2923 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
2925 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
2926 parseerror(parser, "invalid return type: `%s'", ty1);
2930 if (!parser_next(parser)) {
2931 parseerror(parser, "expected return assignment expression");
2935 if (!(exp = parse_expression_leave(parser, false, false, false)))
2938 /* prepare the return value */
2940 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
2941 ast_type_adopt(retval, expected->expression.next);
2942 parser->function->return_value = retval;
2945 if (!ast_compare_type(exp, (ast_expression*)retval)) {
2946 char ty1[1024], ty2[1024];
2947 ast_type_to_string(exp, ty1, sizeof(ty1));
2948 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
2949 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
2952 /* store to 'return' local variable */
2953 var = (ast_expression*)ast_store_new(
2955 type_store_instr[expected->expression.next->vtype],
2956 (ast_expression*)retval, exp);
2963 if (parser->tok != ';')
2964 parseerror(parser, "missing semicolon after return assignment");
2965 else if (!parser_next(parser))
2966 parseerror(parser, "parse error after return assignment");
2972 if (parser->tok != ';') {
2973 exp = parse_expression(parser, false, false);
2977 if (exp->vtype != TYPE_NIL &&
2978 exp->vtype != ((ast_expression*)expected)->next->vtype)
2980 parseerror(parser, "return with invalid expression");
2983 ret = ast_return_new(ctx, exp);
2989 if (!parser_next(parser))
2990 parseerror(parser, "parse error");
2992 if (!retval && expected->expression.next->vtype != TYPE_VOID)
2994 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2996 ret = ast_return_new(ctx, (ast_expression*)retval);
2998 *out = (ast_expression*)ret;
3002 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
3005 unsigned int levels = 0;
3006 lex_ctx ctx = parser_ctx(parser);
3007 const char **loops = (is_continue ? parser->continues : parser->breaks);
3009 (void)block; /* not touching */
3010 if (!parser_next(parser)) {
3011 parseerror(parser, "expected semicolon or loop label");
3015 if (!vec_size(loops)) {
3017 parseerror(parser, "`continue` can only be used inside loops");
3019 parseerror(parser, "`break` can only be used inside loops or switches");
3022 if (parser->tok == TOKEN_IDENT) {
3023 if (!OPTS_FLAG(LOOP_LABELS))
3024 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3025 i = vec_size(loops);
3027 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
3030 parseerror(parser, "no such loop to %s: `%s`",
3031 (is_continue ? "continue" : "break out of"),
3032 parser_tokval(parser));
3037 if (!parser_next(parser)) {
3038 parseerror(parser, "expected semicolon");
3043 if (parser->tok != ';') {
3044 parseerror(parser, "expected semicolon");
3048 if (!parser_next(parser))
3049 parseerror(parser, "parse error");
3051 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
3055 /* returns true when it was a variable qualifier, false otherwise!
3056 * on error, cvq is set to CV_WRONG
3058 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
3060 bool had_const = false;
3061 bool had_var = false;
3062 bool had_noref = false;
3063 bool had_attrib = false;
3064 bool had_static = false;
3069 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
3071 /* parse an attribute */
3072 if (!parser_next(parser)) {
3073 parseerror(parser, "expected attribute after `[[`");
3077 if (!strcmp(parser_tokval(parser), "noreturn")) {
3078 flags |= AST_FLAG_NORETURN;
3079 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3080 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
3085 else if (!strcmp(parser_tokval(parser), "noref")) {
3087 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3088 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
3093 else if (!strcmp(parser_tokval(parser), "inline")) {
3094 flags |= AST_FLAG_INLINE;
3095 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3096 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
3101 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
3102 flags |= AST_FLAG_ALIAS;
3105 if (!parser_next(parser)) {
3106 parseerror(parser, "parse error in attribute");
3110 if (parser->tok == '(') {
3111 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
3112 parseerror(parser, "`alias` attribute missing parameter");
3116 *message = util_strdup(parser_tokval(parser));
3118 if (!parser_next(parser)) {
3119 parseerror(parser, "parse error in attribute");
3123 if (parser->tok != ')') {
3124 parseerror(parser, "`alias` attribute expected `)` after parameter");
3128 if (!parser_next(parser)) {
3129 parseerror(parser, "parse error in attribute");
3134 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3135 parseerror(parser, "`alias` attribute expected `]]`");
3139 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
3140 flags |= AST_FLAG_DEPRECATED;
3143 if (!parser_next(parser)) {
3144 parseerror(parser, "parse error in attribute");
3148 if (parser->tok == '(') {
3149 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
3150 parseerror(parser, "`deprecated` attribute missing parameter");
3154 *message = util_strdup(parser_tokval(parser));
3156 if (!parser_next(parser)) {
3157 parseerror(parser, "parse error in attribute");
3161 if(parser->tok != ')') {
3162 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
3166 if (!parser_next(parser)) {
3167 parseerror(parser, "parse error in attribute");
3172 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3173 parseerror(parser, "`deprecated` attribute expected `]]`");
3176 if (*message) mem_d(*message);
3184 /* Skip tokens until we hit a ]] */
3185 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
3186 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3187 if (!parser_next(parser)) {
3188 parseerror(parser, "error inside attribute");
3195 else if (with_local && !strcmp(parser_tokval(parser), "static"))
3197 else if (!strcmp(parser_tokval(parser), "const"))
3199 else if (!strcmp(parser_tokval(parser), "var"))
3201 else if (with_local && !strcmp(parser_tokval(parser), "local"))
3203 else if (!strcmp(parser_tokval(parser), "noref"))
3205 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
3210 if (!parser_next(parser))
3220 *is_static = had_static;
3224 parseerror(parser, "parse error after variable qualifier");
3229 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
3230 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
3235 /* skip the 'while' and get the body */
3236 if (!parser_next(parser)) {
3237 if (OPTS_FLAG(LOOP_LABELS))
3238 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
3240 parseerror(parser, "expected 'switch' operand in parenthesis");
3244 if (parser->tok == ':') {
3245 if (!OPTS_FLAG(LOOP_LABELS))
3246 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3247 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3248 parseerror(parser, "expected loop label");
3251 label = util_strdup(parser_tokval(parser));
3252 if (!parser_next(parser)) {
3254 parseerror(parser, "expected 'switch' operand in parenthesis");
3259 if (parser->tok != '(') {
3260 parseerror(parser, "expected 'switch' operand in parenthesis");
3264 vec_push(parser->breaks, label);
3266 rv = parse_switch_go(parser, block, out);
3269 if (vec_last(parser->breaks) != label) {
3270 parseerror(parser, "internal error: label stack corrupted");
3276 vec_pop(parser->breaks);
3281 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3283 ast_expression *operand;
3286 ast_switch *switchnode;
3287 ast_switch_case swcase;
3290 bool noref, is_static;
3291 uint32_t qflags = 0;
3293 lex_ctx ctx = parser_ctx(parser);
3295 (void)block; /* not touching */
3298 /* parse into the expression */
3299 if (!parser_next(parser)) {
3300 parseerror(parser, "expected switch operand");
3303 /* parse the operand */
3304 operand = parse_expression_leave(parser, false, false, false);
3308 switchnode = ast_switch_new(ctx, operand);
3311 if (parser->tok != ')') {
3312 ast_delete(switchnode);
3313 parseerror(parser, "expected closing paren after 'switch' operand");
3317 /* parse over the opening paren */
3318 if (!parser_next(parser) || parser->tok != '{') {
3319 ast_delete(switchnode);
3320 parseerror(parser, "expected list of cases");
3324 if (!parser_next(parser)) {
3325 ast_delete(switchnode);
3326 parseerror(parser, "expected 'case' or 'default'");
3330 /* new block; allow some variables to be declared here */
3331 parser_enterblock(parser);
3334 if (parser->tok == TOKEN_IDENT)
3335 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3336 if (typevar || parser->tok == TOKEN_TYPENAME) {
3337 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3338 ast_delete(switchnode);
3343 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3345 if (cvq == CV_WRONG) {
3346 ast_delete(switchnode);
3349 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3350 ast_delete(switchnode);
3359 while (parser->tok != '}') {
3360 ast_block *caseblock;
3362 if (!strcmp(parser_tokval(parser), "case")) {
3363 if (!parser_next(parser)) {
3364 ast_delete(switchnode);
3365 parseerror(parser, "expected expression for case");
3368 swcase.value = parse_expression_leave(parser, false, false, false);
3369 if (!swcase.value) {
3370 ast_delete(switchnode);
3371 parseerror(parser, "expected expression for case");
3374 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3375 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3376 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3382 else if (!strcmp(parser_tokval(parser), "default")) {
3383 swcase.value = NULL;
3384 if (!parser_next(parser)) {
3385 ast_delete(switchnode);
3386 parseerror(parser, "expected colon");
3391 ast_delete(switchnode);
3392 parseerror(parser, "expected 'case' or 'default'");
3396 /* Now the colon and body */
3397 if (parser->tok != ':') {
3398 if (swcase.value) ast_unref(swcase.value);
3399 ast_delete(switchnode);
3400 parseerror(parser, "expected colon");
3404 if (!parser_next(parser)) {
3405 if (swcase.value) ast_unref(swcase.value);
3406 ast_delete(switchnode);
3407 parseerror(parser, "expected statements or case");
3410 caseblock = ast_block_new(parser_ctx(parser));
3412 if (swcase.value) ast_unref(swcase.value);
3413 ast_delete(switchnode);
3416 swcase.code = (ast_expression*)caseblock;
3417 vec_push(switchnode->cases, swcase);
3419 ast_expression *expr;
3420 if (parser->tok == '}')
3422 if (parser->tok == TOKEN_KEYWORD) {
3423 if (!strcmp(parser_tokval(parser), "case") ||
3424 !strcmp(parser_tokval(parser), "default"))
3429 if (!parse_statement(parser, caseblock, &expr, true)) {
3430 ast_delete(switchnode);
3435 if (!ast_block_add_expr(caseblock, expr)) {
3436 ast_delete(switchnode);
3442 parser_leaveblock(parser);
3445 if (parser->tok != '}') {
3446 ast_delete(switchnode);
3447 parseerror(parser, "expected closing paren of case list");
3450 if (!parser_next(parser)) {
3451 ast_delete(switchnode);
3452 parseerror(parser, "parse error after switch");
3455 *out = (ast_expression*)switchnode;
3459 /* parse computed goto sides */
3460 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3461 ast_expression *on_true;
3462 ast_expression *on_false;
3463 ast_expression *cond;
3468 if (ast_istype(*side, ast_ternary)) {
3469 ast_ternary *tern = (ast_ternary*)*side;
3470 on_true = parse_goto_computed(parser, &tern->on_true);
3471 on_false = parse_goto_computed(parser, &tern->on_false);
3473 if (!on_true || !on_false) {
3474 parseerror(parser, "expected label or expression in ternary");
3475 if (on_true) ast_unref(on_true);
3476 if (on_false) ast_unref(on_false);
3484 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3485 } else if (ast_istype(*side, ast_label)) {
3486 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3487 ast_goto_set_label(gt, ((ast_label*)*side));
3489 return (ast_expression*)gt;
3494 static bool parse_goto(parser_t *parser, ast_expression **out)
3496 ast_goto *gt = NULL;
3497 ast_expression *lbl;
3499 if (!parser_next(parser))
3502 if (parser->tok != TOKEN_IDENT) {
3503 ast_expression *expression;
3505 /* could be an expression i.e computed goto :-) */
3506 if (parser->tok != '(') {
3507 parseerror(parser, "expected label name after `goto`");
3511 /* failed to parse expression for goto */
3512 if (!(expression = parse_expression(parser, false, true)) ||
3513 !(*out = parse_goto_computed(parser, &expression))) {
3514 parseerror(parser, "invalid goto expression");
3515 ast_unref(expression);
3522 /* not computed goto */
3523 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3524 lbl = parser_find_label(parser, gt->name);
3526 if (!ast_istype(lbl, ast_label)) {
3527 parseerror(parser, "internal error: label is not an ast_label");
3531 ast_goto_set_label(gt, (ast_label*)lbl);
3534 vec_push(parser->gotos, gt);
3536 if (!parser_next(parser) || parser->tok != ';') {
3537 parseerror(parser, "semicolon expected after goto label");
3540 if (!parser_next(parser)) {
3541 parseerror(parser, "parse error after goto");
3545 *out = (ast_expression*)gt;
3549 static bool parse_skipwhite(parser_t *parser)
3552 if (!parser_next(parser))
3554 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3555 return parser->tok < TOKEN_ERROR;
3558 static bool parse_eol(parser_t *parser)
3560 if (!parse_skipwhite(parser))
3562 return parser->tok == TOKEN_EOL;
3565 static bool parse_pragma_do(parser_t *parser)
3567 if (!parser_next(parser) ||
3568 parser->tok != TOKEN_IDENT ||
3569 strcmp(parser_tokval(parser), "pragma"))
3571 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3574 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3575 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3579 if (!strcmp(parser_tokval(parser), "noref")) {
3580 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3581 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3584 parser->noref = !!parser_token(parser)->constval.i;
3585 if (!parse_eol(parser)) {
3586 parseerror(parser, "parse error after `noref` pragma");
3592 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3599 static bool parse_pragma(parser_t *parser)
3602 parser->lex->flags.preprocessing = true;
3603 parser->lex->flags.mergelines = true;
3604 rv = parse_pragma_do(parser);
3605 if (parser->tok != TOKEN_EOL) {
3606 parseerror(parser, "junk after pragma");
3609 parser->lex->flags.preprocessing = false;
3610 parser->lex->flags.mergelines = false;
3611 if (!parser_next(parser)) {
3612 parseerror(parser, "parse error after pragma");
3618 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3620 bool noref, is_static;
3622 uint32_t qflags = 0;
3623 ast_value *typevar = NULL;
3624 char *vstring = NULL;
3628 if (parser->tok == TOKEN_IDENT)
3629 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3631 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3633 /* local variable */
3635 parseerror(parser, "cannot declare a variable from here");
3638 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3639 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3642 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3646 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3648 if (cvq == CV_WRONG)
3650 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3652 else if (parser->tok == TOKEN_KEYWORD)
3654 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3659 if (!parser_next(parser)) {
3660 parseerror(parser, "parse error after __builtin_debug_printtype");
3664 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3666 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3667 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3668 if (!parser_next(parser)) {
3669 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3675 if (!parse_statement(parser, block, out, allow_cases))
3678 con_out("__builtin_debug_printtype: got no output node\n");
3681 ast_type_to_string(*out, ty, sizeof(ty));
3682 con_out("__builtin_debug_printtype: `%s`\n", ty);
3687 else if (!strcmp(parser_tokval(parser), "return"))
3689 return parse_return(parser, block, out);
3691 else if (!strcmp(parser_tokval(parser), "if"))
3693 return parse_if(parser, block, out);
3695 else if (!strcmp(parser_tokval(parser), "while"))
3697 return parse_while(parser, block, out);
3699 else if (!strcmp(parser_tokval(parser), "do"))
3701 return parse_dowhile(parser, block, out);
3703 else if (!strcmp(parser_tokval(parser), "for"))
3705 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3706 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3709 return parse_for(parser, block, out);
3711 else if (!strcmp(parser_tokval(parser), "break"))
3713 return parse_break_continue(parser, block, out, false);
3715 else if (!strcmp(parser_tokval(parser), "continue"))
3717 return parse_break_continue(parser, block, out, true);
3719 else if (!strcmp(parser_tokval(parser), "switch"))
3721 return parse_switch(parser, block, out);
3723 else if (!strcmp(parser_tokval(parser), "case") ||
3724 !strcmp(parser_tokval(parser), "default"))
3727 parseerror(parser, "unexpected 'case' label");
3732 else if (!strcmp(parser_tokval(parser), "goto"))
3734 return parse_goto(parser, out);
3736 else if (!strcmp(parser_tokval(parser), "typedef"))
3738 if (!parser_next(parser)) {
3739 parseerror(parser, "expected type definition after 'typedef'");
3742 return parse_typedef(parser);
3744 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3747 else if (parser->tok == '{')
3750 inner = parse_block(parser);
3753 *out = (ast_expression*)inner;
3756 else if (parser->tok == ':')
3760 if (!parser_next(parser)) {
3761 parseerror(parser, "expected label name");
3764 if (parser->tok != TOKEN_IDENT) {
3765 parseerror(parser, "label must be an identifier");
3768 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3770 if (!label->undefined) {
3771 parseerror(parser, "label `%s` already defined", label->name);
3774 label->undefined = false;
3777 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3778 vec_push(parser->labels, label);
3780 *out = (ast_expression*)label;
3781 if (!parser_next(parser)) {
3782 parseerror(parser, "parse error after label");
3785 for (i = 0; i < vec_size(parser->gotos); ++i) {
3786 if (!strcmp(parser->gotos[i]->name, label->name)) {
3787 ast_goto_set_label(parser->gotos[i], label);
3788 vec_remove(parser->gotos, i, 1);
3794 else if (parser->tok == ';')
3796 if (!parser_next(parser)) {
3797 parseerror(parser, "parse error after empty statement");
3804 lex_ctx ctx = parser_ctx(parser);
3805 ast_expression *exp = parse_expression(parser, false, false);
3809 if (!ast_side_effects(exp)) {
3810 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3817 static bool parse_enum(parser_t *parser)
3820 bool reverse = false;
3822 ast_value **values = NULL;
3823 ast_value *var = NULL;
3826 ast_expression *old;
3828 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3829 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3833 /* enumeration attributes (can add more later) */
3834 if (parser->tok == ':') {
3835 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3836 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3841 if (!strcmp(parser_tokval(parser), "flag")) {
3845 else if (!strcmp(parser_tokval(parser), "reverse")) {
3849 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3853 if (!parser_next(parser) || parser->tok != '{') {
3854 parseerror(parser, "expected `{` after enum attribute ");
3860 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3861 if (parser->tok == '}') {
3862 /* allow an empty enum */
3865 parseerror(parser, "expected identifier or `}`");
3869 old = parser_find_field(parser, parser_tokval(parser));
3871 old = parser_find_global(parser, parser_tokval(parser));
3873 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3874 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3878 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3879 vec_push(values, var);
3880 var->cvq = CV_CONST;
3881 var->hasvalue = true;
3883 /* for flagged enumerations increment in POTs of TWO */
3884 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3885 parser_addglobal(parser, var->name, (ast_expression*)var);
3887 if (!parser_next(parser)) {
3888 parseerror(parser, "expected `=`, `}` or comma after identifier");
3892 if (parser->tok == ',')
3894 if (parser->tok == '}')
3896 if (parser->tok != '=') {
3897 parseerror(parser, "expected `=`, `}` or comma after identifier");
3901 if (!parser_next(parser)) {
3902 parseerror(parser, "expected expression after `=`");
3906 /* We got a value! */
3907 old = parse_expression_leave(parser, true, false, false);
3908 asvalue = (ast_value*)old;
3909 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3910 compile_error(ast_ctx(var), "constant value or expression expected");
3913 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3915 if (parser->tok == '}')
3917 if (parser->tok != ',') {
3918 parseerror(parser, "expected `}` or comma after expression");
3923 /* patch them all (for reversed attribute) */
3926 for (i = 0; i < vec_size(values); i++)
3927 values[i]->constval.vfloat = vec_size(values) - i - 1;
3930 if (parser->tok != '}') {
3931 parseerror(parser, "internal error: breaking without `}`");
3935 if (!parser_next(parser) || parser->tok != ';') {
3936 parseerror(parser, "expected semicolon after enumeration");
3940 if (!parser_next(parser)) {
3941 parseerror(parser, "parse error after enumeration");
3953 static bool parse_block_into(parser_t *parser, ast_block *block)
3957 parser_enterblock(parser);
3959 if (!parser_next(parser)) { /* skip the '{' */
3960 parseerror(parser, "expected function body");
3964 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3966 ast_expression *expr = NULL;
3967 if (parser->tok == '}')
3970 if (!parse_statement(parser, block, &expr, false)) {
3971 /* parseerror(parser, "parse error"); */
3977 if (!ast_block_add_expr(block, expr)) {
3984 if (parser->tok != '}') {
3987 (void)parser_next(parser);
3991 if (!parser_leaveblock(parser))
3993 return retval && !!block;
3996 static ast_block* parse_block(parser_t *parser)
3999 block = ast_block_new(parser_ctx(parser));
4002 if (!parse_block_into(parser, block)) {
4003 ast_block_delete(block);
4009 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
4011 if (parser->tok == '{') {
4012 *out = (ast_expression*)parse_block(parser);
4015 return parse_statement(parser, NULL, out, false);
4018 static bool create_vector_members(ast_value *var, ast_member **me)
4021 size_t len = strlen(var->name);
4023 for (i = 0; i < 3; ++i) {
4024 char *name = (char*)mem_a(len+3);
4025 memcpy(name, var->name, len);
4027 name[len+1] = 'x'+i;
4029 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
4038 do { ast_member_delete(me[--i]); } while(i);
4042 static bool parse_function_body(parser_t *parser, ast_value *var)
4044 ast_block *block = NULL;
4049 ast_expression *framenum = NULL;
4050 ast_expression *nextthink = NULL;
4051 /* None of the following have to be deleted */
4052 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
4053 ast_expression *gbl_time = NULL, *gbl_self = NULL;
4054 bool has_frame_think;
4058 has_frame_think = false;
4059 old = parser->function;
4061 if (var->expression.flags & AST_FLAG_ALIAS) {
4062 parseerror(parser, "function aliases cannot have bodies");
4066 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
4067 parseerror(parser, "gotos/labels leaking");
4071 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4072 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
4073 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
4079 if (parser->tok == '[') {
4080 /* got a frame definition: [ framenum, nextthink ]
4081 * this translates to:
4082 * self.frame = framenum;
4083 * self.nextthink = time + 0.1;
4084 * self.think = nextthink;
4088 fld_think = parser_find_field(parser, "think");
4089 fld_nextthink = parser_find_field(parser, "nextthink");
4090 fld_frame = parser_find_field(parser, "frame");
4091 if (!fld_think || !fld_nextthink || !fld_frame) {
4092 parseerror(parser, "cannot use [frame,think] notation without the required fields");
4093 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
4096 gbl_time = parser_find_global(parser, "time");
4097 gbl_self = parser_find_global(parser, "self");
4098 if (!gbl_time || !gbl_self) {
4099 parseerror(parser, "cannot use [frame,think] notation without the required globals");
4100 parseerror(parser, "please declare the following globals: `time`, `self`");
4104 if (!parser_next(parser))
4107 framenum = parse_expression_leave(parser, true, false, false);
4109 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
4112 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
4113 ast_unref(framenum);
4114 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
4118 if (parser->tok != ',') {
4119 ast_unref(framenum);
4120 parseerror(parser, "expected comma after frame number in [frame,think] notation");
4121 parseerror(parser, "Got a %i\n", parser->tok);
4125 if (!parser_next(parser)) {
4126 ast_unref(framenum);
4130 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
4132 /* qc allows the use of not-yet-declared functions here
4133 * - this automatically creates a prototype */
4134 ast_value *thinkfunc;
4135 ast_expression *functype = fld_think->next;
4137 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
4138 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
4139 ast_unref(framenum);
4140 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
4143 ast_type_adopt(thinkfunc, functype);
4145 if (!parser_next(parser)) {
4146 ast_unref(framenum);
4147 ast_delete(thinkfunc);
4151 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
4153 nextthink = (ast_expression*)thinkfunc;
4156 nextthink = parse_expression_leave(parser, true, false, false);
4158 ast_unref(framenum);
4159 parseerror(parser, "expected a think-function in [frame,think] notation");
4164 if (!ast_istype(nextthink, ast_value)) {
4165 parseerror(parser, "think-function in [frame,think] notation must be a constant");
4169 if (retval && parser->tok != ']') {
4170 parseerror(parser, "expected closing `]` for [frame,think] notation");
4174 if (retval && !parser_next(parser)) {
4178 if (retval && parser->tok != '{') {
4179 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
4184 ast_unref(nextthink);
4185 ast_unref(framenum);
4189 has_frame_think = true;
4192 block = ast_block_new(parser_ctx(parser));
4194 parseerror(parser, "failed to allocate block");
4195 if (has_frame_think) {
4196 ast_unref(nextthink);
4197 ast_unref(framenum);
4202 if (has_frame_think) {
4204 ast_expression *self_frame;
4205 ast_expression *self_nextthink;
4206 ast_expression *self_think;
4207 ast_expression *time_plus_1;
4208 ast_store *store_frame;
4209 ast_store *store_nextthink;
4210 ast_store *store_think;
4212 ctx = parser_ctx(parser);
4213 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
4214 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
4215 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
4217 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
4218 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
4220 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
4221 if (self_frame) ast_delete(self_frame);
4222 if (self_nextthink) ast_delete(self_nextthink);
4223 if (self_think) ast_delete(self_think);
4224 if (time_plus_1) ast_delete(time_plus_1);
4230 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
4231 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
4232 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
4235 ast_delete(self_frame);
4238 if (!store_nextthink) {
4239 ast_delete(self_nextthink);
4243 ast_delete(self_think);
4247 if (store_frame) ast_delete(store_frame);
4248 if (store_nextthink) ast_delete(store_nextthink);
4249 if (store_think) ast_delete(store_think);
4252 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
4253 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
4254 !ast_block_add_expr(block, (ast_expression*)store_think))
4261 parseerror(parser, "failed to generate code for [frame,think]");
4262 ast_unref(nextthink);
4263 ast_unref(framenum);
4269 if (var->hasvalue) {
4270 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
4271 ast_block_delete(block);
4275 func = ast_function_new(ast_ctx(var), var->name, var);
4277 parseerror(parser, "failed to allocate function for `%s`", var->name);
4278 ast_block_delete(block);
4281 vec_push(parser->functions, func);
4283 parser_enterblock(parser);
4285 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
4287 ast_value *param = var->expression.params[parami];
4290 if (param->expression.vtype != TYPE_VECTOR &&
4291 (param->expression.vtype != TYPE_FIELD ||
4292 param->expression.next->vtype != TYPE_VECTOR))
4297 if (!create_vector_members(param, me)) {
4298 ast_block_delete(block);
4302 for (e = 0; e < 3; ++e) {
4303 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4304 ast_block_collect(block, (ast_expression*)me[e]);
4308 if (var->argcounter) {
4309 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4310 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4314 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4316 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4317 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4318 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4319 varargs->expression.count = 0;
4320 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4321 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4322 ast_delete(varargs);
4323 ast_block_delete(block);
4326 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4327 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4328 ast_delete(varargs);
4329 ast_block_delete(block);
4332 func->varargs = varargs;
4334 func->fixedparams = parser_const_float(parser, vec_size(var->expression.params));
4337 parser->function = func;
4338 if (!parse_block_into(parser, block)) {
4339 ast_block_delete(block);
4343 vec_push(func->blocks, block);
4346 parser->function = old;
4347 if (!parser_leaveblock(parser))
4349 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4350 parseerror(parser, "internal error: local scopes left");
4354 if (parser->tok == ';')
4355 return parser_next(parser);
4356 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4357 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4361 (void)!parser_leaveblock(parser);
4362 vec_pop(parser->functions);
4363 ast_function_delete(func);
4364 var->constval.vfunc = NULL;
4367 parser->function = old;
4371 static ast_expression *array_accessor_split(
4376 ast_expression *left,
4377 ast_expression *right
4383 lex_ctx ctx = ast_ctx(array);
4385 if (!left || !right) {
4386 if (left) ast_delete(left);
4387 if (right) ast_delete(right);
4391 cmp = ast_binary_new(ctx, INSTR_LT,
4392 (ast_expression*)index,
4393 (ast_expression*)parser_const_float(parser, middle));
4397 parseerror(parser, "internal error: failed to create comparison for array setter");
4401 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4403 ast_delete(cmp); /* will delete left and right */
4404 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4408 return (ast_expression*)ifthen;
4411 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4413 lex_ctx ctx = ast_ctx(array);
4415 if (from+1 == afterend) {
4416 /* set this value */
4419 ast_array_index *subscript;
4421 int assignop = type_store_instr[value->expression.vtype];
4423 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4424 assignop = INSTR_STORE_V;
4426 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4430 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4432 ast_delete(subscript);
4436 block = ast_block_new(ctx);
4442 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4447 ret = ast_return_new(ctx, NULL);
4453 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4458 return (ast_expression*)block;
4460 ast_expression *left, *right;
4461 size_t diff = afterend - from;
4462 size_t middle = from + diff/2;
4463 left = array_setter_node(parser, array, index, value, from, middle);
4464 right = array_setter_node(parser, array, index, value, middle, afterend);
4465 return array_accessor_split(parser, array, index, middle, left, right);
4469 static ast_expression *array_field_setter_node(
4478 lex_ctx ctx = ast_ctx(array);
4480 if (from+1 == afterend) {
4481 /* set this value */
4484 ast_entfield *entfield;
4485 ast_array_index *subscript;
4487 int assignop = type_storep_instr[value->expression.vtype];
4489 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4490 assignop = INSTR_STOREP_V;
4492 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4496 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4497 subscript->expression.vtype = TYPE_FIELD;
4499 entfield = ast_entfield_new_force(ctx,
4500 (ast_expression*)entity,
4501 (ast_expression*)subscript,
4502 (ast_expression*)subscript);
4504 ast_delete(subscript);
4508 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4510 ast_delete(entfield);
4514 block = ast_block_new(ctx);
4520 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4525 ret = ast_return_new(ctx, NULL);
4531 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4536 return (ast_expression*)block;
4538 ast_expression *left, *right;
4539 size_t diff = afterend - from;
4540 size_t middle = from + diff/2;
4541 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4542 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4543 return array_accessor_split(parser, array, index, middle, left, right);
4547 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4549 lex_ctx ctx = ast_ctx(array);
4551 if (from+1 == afterend) {
4553 ast_array_index *subscript;
4555 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4559 ret = ast_return_new(ctx, (ast_expression*)subscript);
4561 ast_delete(subscript);
4565 return (ast_expression*)ret;
4567 ast_expression *left, *right;
4568 size_t diff = afterend - from;
4569 size_t middle = from + diff/2;
4570 left = array_getter_node(parser, array, index, from, middle);
4571 right = array_getter_node(parser, array, index, middle, afterend);
4572 return array_accessor_split(parser, array, index, middle, left, right);
4576 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4578 ast_function *func = NULL;
4579 ast_value *fval = NULL;
4580 ast_block *body = NULL;
4582 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4584 parseerror(parser, "failed to create accessor function value");
4588 func = ast_function_new(ast_ctx(array), funcname, fval);
4591 parseerror(parser, "failed to create accessor function node");
4595 body = ast_block_new(ast_ctx(array));
4597 parseerror(parser, "failed to create block for array accessor");
4603 vec_push(func->blocks, body);
4606 vec_push(parser->accessors, fval);
4611 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4613 ast_value *index = NULL;
4614 ast_value *value = NULL;
4618 if (!ast_istype(array->expression.next, ast_value)) {
4619 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4623 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4625 func = fval->constval.vfunc;
4626 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4628 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4629 value = ast_value_copy((ast_value*)array->expression.next);
4631 if (!index || !value) {
4632 parseerror(parser, "failed to create locals for array accessor");
4635 (void)!ast_value_set_name(value, "value"); /* not important */
4636 vec_push(fval->expression.params, index);
4637 vec_push(fval->expression.params, value);
4639 array->setter = fval;
4642 if (index) ast_delete(index);
4643 if (value) ast_delete(value);
4649 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4651 ast_expression *root = NULL;
4652 root = array_setter_node(parser, array,
4653 array->setter->expression.params[0],
4654 array->setter->expression.params[1],
4655 0, array->expression.count);
4657 parseerror(parser, "failed to build accessor search tree");
4660 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4667 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4669 if (!parser_create_array_setter_proto(parser, array, funcname))
4671 return parser_create_array_setter_impl(parser, array);
4674 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4676 ast_expression *root = NULL;
4677 ast_value *entity = NULL;
4678 ast_value *index = NULL;
4679 ast_value *value = NULL;
4683 if (!ast_istype(array->expression.next, ast_value)) {
4684 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4688 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4690 func = fval->constval.vfunc;
4691 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4693 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4694 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4695 value = ast_value_copy((ast_value*)array->expression.next);
4696 if (!entity || !index || !value) {
4697 parseerror(parser, "failed to create locals for array accessor");
4700 (void)!ast_value_set_name(value, "value"); /* not important */
4701 vec_push(fval->expression.params, entity);
4702 vec_push(fval->expression.params, index);
4703 vec_push(fval->expression.params, value);
4705 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4707 parseerror(parser, "failed to build accessor search tree");
4711 array->setter = fval;
4712 return ast_block_add_expr(func->blocks[0], root);
4714 if (entity) ast_delete(entity);
4715 if (index) ast_delete(index);
4716 if (value) ast_delete(value);
4717 if (root) ast_delete(root);
4723 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4725 ast_value *index = NULL;
4729 /* NOTE: checking array->expression.next rather than elemtype since
4730 * for fields elemtype is a temporary fieldtype.
4732 if (!ast_istype(array->expression.next, ast_value)) {
4733 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4737 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4739 func = fval->constval.vfunc;
4740 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4742 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4745 parseerror(parser, "failed to create locals for array accessor");
4748 vec_push(fval->expression.params, index);
4750 array->getter = fval;
4753 if (index) ast_delete(index);
4759 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4761 ast_expression *root = NULL;
4763 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4765 parseerror(parser, "failed to build accessor search tree");
4768 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4775 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4777 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4779 return parser_create_array_getter_impl(parser, array);
4782 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4783 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4791 bool variadic = false;
4792 ast_value *varparam = NULL;
4793 char *argcounter = NULL;
4795 ctx = parser_ctx(parser);
4797 /* for the sake of less code we parse-in in this function */
4798 if (!parser_next(parser)) {
4800 parseerror(parser, "expected parameter list");
4806 /* parse variables until we hit a closing paren */
4807 while (parser->tok != ')') {
4809 /* there must be commas between them */
4810 if (parser->tok != ',') {
4811 parseerror(parser, "expected comma or end of parameter list");
4814 if (!parser_next(parser)) {
4815 parseerror(parser, "expected parameter");
4821 if (parser->tok == TOKEN_DOTS) {
4822 /* '...' indicates a varargs function */
4824 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4825 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4828 if (parser->tok == TOKEN_IDENT) {
4829 argcounter = util_strdup(parser_tokval(parser));
4830 if (!parser_next(parser) || parser->tok != ')') {
4831 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4838 /* for anything else just parse a typename */
4839 param = parse_typename(parser, NULL, NULL);
4842 vec_push(params, param);
4843 if (param->expression.vtype >= TYPE_VARIANT) {
4844 char tname[1024]; /* typename is reserved in C++ */
4845 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4846 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4849 /* type-restricted varargs */
4850 if (parser->tok == TOKEN_DOTS) {
4852 varparam = vec_last(params);
4854 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4855 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4858 if (parser->tok == TOKEN_IDENT) {
4859 argcounter = util_strdup(parser_tokval(parser));
4860 if (!parser_next(parser) || parser->tok != ')') {
4861 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4869 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4873 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4874 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4877 if (!parser_next(parser)) {
4878 parseerror(parser, "parse error after typename");
4882 /* now turn 'var' into a function type */
4883 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4884 fval->expression.next = (ast_expression*)var;
4886 fval->expression.flags |= AST_FLAG_VARIADIC;
4889 var->expression.params = params;
4890 var->expression.varparam = (ast_expression*)varparam;
4891 var->argcounter = argcounter;
4900 ast_delete(varparam);
4902 for (i = 0; i < vec_size(params); ++i)
4903 ast_delete(params[i]);
4908 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4910 ast_expression *cexp;
4911 ast_value *cval, *tmp;
4914 ctx = parser_ctx(parser);
4916 if (!parser_next(parser)) {
4918 parseerror(parser, "expected array-size");
4922 cexp = parse_expression_leave(parser, true, false, false);
4924 if (!cexp || !ast_istype(cexp, ast_value)) {
4928 parseerror(parser, "expected array-size as constant positive integer");
4931 cval = (ast_value*)cexp;
4933 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4934 tmp->expression.next = (ast_expression*)var;
4937 if (cval->expression.vtype == TYPE_INTEGER)
4938 tmp->expression.count = cval->constval.vint;
4939 else if (cval->expression.vtype == TYPE_FLOAT)
4940 tmp->expression.count = cval->constval.vfloat;
4944 parseerror(parser, "array-size must be a positive integer constant");
4949 if (parser->tok != ']') {
4951 parseerror(parser, "expected ']' after array-size");
4954 if (!parser_next(parser)) {
4956 parseerror(parser, "error after parsing array size");
4962 /* Parse a complete typename.
4963 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4964 * but when parsing variables separated by comma
4965 * 'storebase' should point to where the base-type should be kept.
4966 * The base type makes up every bit of type information which comes *before* the
4969 * The following will be parsed in its entirety:
4971 * The 'basetype' in this case is 'void()'
4972 * and if there's a comma after it, say:
4974 * then the type-information 'void()' can be stored in 'storebase'
4976 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4978 ast_value *var, *tmp;
4981 const char *name = NULL;
4982 bool isfield = false;
4983 bool wasarray = false;
4984 size_t morefields = 0;
4986 ctx = parser_ctx(parser);
4988 /* types may start with a dot */
4989 if (parser->tok == '.') {
4991 /* if we parsed a dot we need a typename now */
4992 if (!parser_next(parser)) {
4993 parseerror(parser, "expected typename for field definition");
4997 /* Further dots are handled seperately because they won't be part of the
5000 while (parser->tok == '.') {
5002 if (!parser_next(parser)) {
5003 parseerror(parser, "expected typename for field definition");
5008 if (parser->tok == TOKEN_IDENT)
5009 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
5010 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
5011 parseerror(parser, "expected typename");
5015 /* generate the basic type value */
5016 if (cached_typedef) {
5017 var = ast_value_copy(cached_typedef);
5018 ast_value_set_name(var, "<type(from_def)>");
5020 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
5022 for (; morefields; --morefields) {
5023 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
5024 tmp->expression.next = (ast_expression*)var;
5028 /* do not yet turn into a field - remember:
5029 * .void() foo; is a field too
5030 * .void()() foo; is a function
5034 if (!parser_next(parser)) {
5036 parseerror(parser, "parse error after typename");
5040 /* an opening paren now starts the parameter-list of a function
5041 * this is where original-QC has parameter lists.
5042 * We allow a single parameter list here.
5043 * Much like fteqcc we don't allow `float()() x`
5045 if (parser->tok == '(') {
5046 var = parse_parameter_list(parser, var);
5051 /* store the base if requested */
5053 *storebase = ast_value_copy(var);
5055 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5056 tmp->expression.next = (ast_expression*)*storebase;
5061 /* there may be a name now */
5062 if (parser->tok == TOKEN_IDENT) {
5063 name = util_strdup(parser_tokval(parser));
5065 if (!parser_next(parser)) {
5068 parseerror(parser, "error after variable or field declaration");
5073 /* now this may be an array */
5074 if (parser->tok == '[') {
5076 var = parse_arraysize(parser, var);
5078 if (name) mem_d(name);
5083 /* This is the point where we can turn it into a field */
5085 /* turn it into a field if desired */
5086 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5087 tmp->expression.next = (ast_expression*)var;
5091 /* now there may be function parens again */
5092 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5093 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5094 if (parser->tok == '(' && wasarray)
5095 parseerror(parser, "arrays as part of a return type is not supported");
5096 while (parser->tok == '(') {
5097 var = parse_parameter_list(parser, var);
5099 if (name) mem_d(name);
5104 /* finally name it */
5106 if (!ast_value_set_name(var, name)) {
5109 parseerror(parser, "internal error: failed to set name");
5112 /* free the name, ast_value_set_name duplicates */
5119 static bool parse_typedef(parser_t *parser)
5121 ast_value *typevar, *oldtype;
5122 ast_expression *old;
5124 typevar = parse_typename(parser, NULL, NULL);
5129 if ( (old = parser_find_var(parser, typevar->name)) ) {
5130 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
5131 " -> `%s` has been declared here: %s:%i",
5132 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
5133 ast_delete(typevar);
5137 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
5138 parseerror(parser, "type `%s` has already been declared here: %s:%i",
5139 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
5140 ast_delete(typevar);
5144 vec_push(parser->_typedefs, typevar);
5145 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
5147 if (parser->tok != ';') {
5148 parseerror(parser, "expected semicolon after typedef");
5151 if (!parser_next(parser)) {
5152 parseerror(parser, "parse error after typedef");
5159 static const char *cvq_to_str(int cvq) {
5161 case CV_NONE: return "none";
5162 case CV_VAR: return "`var`";
5163 case CV_CONST: return "`const`";
5164 default: return "<INVALID>";
5168 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
5171 if (proto->cvq != var->cvq) {
5172 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
5173 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5174 parser->tok == '='))
5176 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
5177 "`%s` declared with different qualifiers: %s\n"
5178 " -> previous declaration here: %s:%i uses %s",
5179 var->name, cvq_to_str(var->cvq),
5180 ast_ctx(proto).file, ast_ctx(proto).line,
5181 cvq_to_str(proto->cvq));
5184 av = (var ->expression.flags & AST_FLAG_NORETURN);
5185 ao = (proto->expression.flags & AST_FLAG_NORETURN);
5187 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
5188 "`%s` declared with different attributes%s\n"
5189 " -> previous declaration here: %s:%i",
5190 var->name, (av ? ": noreturn" : ""),
5191 ast_ctx(proto).file, ast_ctx(proto).line,
5192 (ao ? ": noreturn" : ""));
5197 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)
5201 ast_expression *old;
5205 ast_value *basetype = NULL;
5207 bool isparam = false;
5208 bool isvector = false;
5209 bool cleanvar = true;
5210 bool wasarray = false;
5212 ast_member *me[3] = { NULL, NULL, NULL };
5214 if (!localblock && is_static)
5215 parseerror(parser, "`static` qualifier is not supported in global scope");
5217 /* get the first complete variable */
5218 var = parse_typename(parser, &basetype, cached_typedef);
5221 ast_delete(basetype);
5229 /* Part 0: finish the type */
5230 if (parser->tok == '(') {
5231 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5232 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5233 var = parse_parameter_list(parser, var);
5239 /* we only allow 1-dimensional arrays */
5240 if (parser->tok == '[') {
5242 var = parse_arraysize(parser, var);
5248 if (parser->tok == '(' && wasarray) {
5249 parseerror(parser, "arrays as part of a return type is not supported");
5250 /* we'll still parse the type completely for now */
5252 /* for functions returning functions */
5253 while (parser->tok == '(') {
5254 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5255 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5256 var = parse_parameter_list(parser, var);
5263 var->cvq = qualifier;
5264 var->expression.flags |= qflags;
5267 * store the vstring back to var for alias and
5268 * deprecation messages.
5270 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5271 var->expression.flags & AST_FLAG_ALIAS)
5272 var->desc = vstring;
5275 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5276 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5277 * is then filled with the previous definition and the parameter-names replaced.
5279 if (!strcmp(var->name, "nil")) {
5280 if (OPTS_FLAG(UNTYPED_NIL)) {
5281 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5282 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5284 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5287 /* Deal with end_sys_ vars */
5289 if (!strcmp(var->name, "end_sys_globals")) {
5291 parser->crc_globals = vec_size(parser->globals);
5294 else if (!strcmp(var->name, "end_sys_fields")) {
5296 parser->crc_fields = vec_size(parser->fields);
5299 if (was_end && var->expression.vtype == TYPE_FIELD) {
5300 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5301 "global '%s' hint should not be a field",
5302 parser_tokval(parser)))
5309 if (!nofields && var->expression.vtype == TYPE_FIELD)
5311 /* deal with field declarations */
5312 old = parser_find_field(parser, var->name);
5314 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5315 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5324 parseerror(parser, "field `%s` already declared here: %s:%i",
5325 var->name, ast_ctx(old).file, ast_ctx(old).line);
5330 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5331 (old = parser_find_global(parser, var->name)))
5333 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5334 parseerror(parser, "field `%s` already declared here: %s:%i",
5335 var->name, ast_ctx(old).file, ast_ctx(old).line);
5342 /* deal with other globals */
5343 old = parser_find_global(parser, var->name);
5344 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5346 /* This is a function which had a prototype */
5347 if (!ast_istype(old, ast_value)) {
5348 parseerror(parser, "internal error: prototype is not an ast_value");
5352 proto = (ast_value*)old;
5353 proto->desc = var->desc;
5354 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5355 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5357 ast_ctx(proto).file, ast_ctx(proto).line);
5361 /* we need the new parameter-names */
5362 for (i = 0; i < vec_size(proto->expression.params); ++i)
5363 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5364 if (!parser_check_qualifiers(parser, var, proto)) {
5371 proto->expression.flags |= var->expression.flags;
5379 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5380 "global `%s` already declared here: %s:%i",
5381 var->name, ast_ctx(old).file, ast_ctx(old).line))
5386 proto = (ast_value*)old;
5387 if (!ast_istype(old, ast_value)) {
5388 parseerror(parser, "internal error: not an ast_value");
5393 if (!parser_check_qualifiers(parser, var, proto)) {
5398 proto->expression.flags |= var->expression.flags;
5402 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5403 (old = parser_find_field(parser, var->name)))
5405 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5406 parseerror(parser, "global `%s` already declared here: %s:%i",
5407 var->name, ast_ctx(old).file, ast_ctx(old).line);
5414 else /* it's not a global */
5416 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5417 if (old && !isparam) {
5418 parseerror(parser, "local `%s` already declared here: %s:%i",
5419 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5423 old = parser_find_local(parser, var->name, 0, &isparam);
5424 if (old && isparam) {
5425 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5426 "local `%s` is shadowing a parameter", var->name))
5428 parseerror(parser, "local `%s` already declared here: %s:%i",
5429 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5433 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5441 /* in a noref section we simply bump the usecount */
5442 if (noref || parser->noref)
5446 * Create the global/local, and deal with vector types.
5449 if (var->expression.vtype == TYPE_VECTOR)
5451 else if (var->expression.vtype == TYPE_FIELD &&
5452 var->expression.next->vtype == TYPE_VECTOR)
5456 if (!create_vector_members(var, me)) {
5463 /* deal with global variables, fields, functions */
5464 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5465 var->isfield = true;
5466 vec_push(parser->fields, (ast_expression*)var);
5467 util_htset(parser->htfields, var->name, var);
5469 for (i = 0; i < 3; ++i) {
5470 vec_push(parser->fields, (ast_expression*)me[i]);
5471 util_htset(parser->htfields, me[i]->name, me[i]);
5476 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5477 parser_addglobal(parser, var->name, (ast_expression*)var);
5479 for (i = 0; i < 3; ++i) {
5480 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5484 ast_expression *find = parser_find_global(parser, var->desc);
5487 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5491 if (var->expression.vtype != find->vtype) {
5495 ast_type_to_string(find, ty1, sizeof(ty1));
5496 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5498 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5505 * add alias to aliases table and to corrector
5506 * so corrections can apply for aliases as well.
5508 util_htset(parser->aliases, var->name, find);
5511 * add to corrector so corrections can work
5512 * even for aliases too.
5515 vec_last(parser->correct_variables),
5516 &vec_last(parser->correct_variables_score),
5520 /* generate aliases for vector components */
5524 util_asprintf(&buffer[0], "%s_x", var->desc);
5525 util_asprintf(&buffer[1], "%s_y", var->desc);
5526 util_asprintf(&buffer[2], "%s_z", var->desc);
5528 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5529 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5530 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5537 * add to corrector so corrections can work
5538 * even for aliases too.
5541 vec_last(parser->correct_variables),
5542 &vec_last(parser->correct_variables_score),
5546 vec_last(parser->correct_variables),
5547 &vec_last(parser->correct_variables_score),
5551 vec_last(parser->correct_variables),
5552 &vec_last(parser->correct_variables_score),
5560 /* a static adds itself to be generated like any other global
5561 * but is added to the local namespace instead
5563 char *defname = NULL;
5564 size_t prefix_len, ln;
5566 ln = strlen(parser->function->name);
5567 vec_append(defname, ln, parser->function->name);
5569 vec_append(defname, 2, "::");
5570 /* remember the length up to here */
5571 prefix_len = vec_size(defname);
5573 /* Add it to the local scope */
5574 util_htset(vec_last(parser->variables), var->name, (void*)var);
5578 vec_last(parser->correct_variables),
5579 &vec_last(parser->correct_variables_score),
5583 /* now rename the global */
5584 ln = strlen(var->name);
5585 vec_append(defname, ln, var->name);
5586 ast_value_set_name(var, defname);
5588 /* push it to the to-be-generated globals */
5589 vec_push(parser->globals, (ast_expression*)var);
5591 /* same game for the vector members */
5593 for (i = 0; i < 3; ++i) {
5594 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5598 vec_last(parser->correct_variables),
5599 &vec_last(parser->correct_variables_score),
5603 vec_shrinkto(defname, prefix_len);
5604 ln = strlen(me[i]->name);
5605 vec_append(defname, ln, me[i]->name);
5606 ast_member_set_name(me[i], defname);
5608 vec_push(parser->globals, (ast_expression*)me[i]);
5613 vec_push(localblock->locals, var);
5614 parser_addlocal(parser, var->name, (ast_expression*)var);
5616 for (i = 0; i < 3; ++i) {
5617 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5618 ast_block_collect(localblock, (ast_expression*)me[i]);
5624 me[0] = me[1] = me[2] = NULL;
5629 if (var->expression.vtype == TYPE_ARRAY) {
5631 util_snprintf(name, sizeof(name), "%s##SET", var->name);
5632 if (!parser_create_array_setter(parser, var, name))
5634 util_snprintf(name, sizeof(name), "%s##GET", var->name);
5635 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5638 else if (!localblock && !nofields &&
5639 var->expression.vtype == TYPE_FIELD &&
5640 var->expression.next->vtype == TYPE_ARRAY)
5643 ast_expression *telem;
5645 ast_value *array = (ast_value*)var->expression.next;
5647 if (!ast_istype(var->expression.next, ast_value)) {
5648 parseerror(parser, "internal error: field element type must be an ast_value");
5652 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5653 if (!parser_create_array_field_setter(parser, array, name))
5656 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5657 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5658 tfield->expression.next = telem;
5659 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5660 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5668 if (parser->tok == ';') {
5669 ast_delete(basetype);
5670 if (!parser_next(parser)) {
5671 parseerror(parser, "error after variable declaration");
5677 if (parser->tok == ',')
5681 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5684 parseerror(parser, "missing comma or semicolon while parsing variables");
5688 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5689 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5690 "initializing expression turns variable `%s` into a constant in this standard",
5697 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5698 if (parser->tok != '=') {
5699 if (!strcmp(parser_tokval(parser), "break")) {
5700 if (!parser_next(parser)) {
5701 parseerror(parser, "error parsing break definition");
5704 (void)!!parsewarning(parser, WARN_BREAKDEF, "break definition ignored (suggest removing it)");
5706 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5711 if (!parser_next(parser)) {
5712 parseerror(parser, "error parsing initializer");
5716 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5717 parseerror(parser, "expected '=' before function body in this standard");
5720 if (parser->tok == '#') {
5721 ast_function *func = NULL;
5722 ast_value *number = NULL;
5728 parseerror(parser, "cannot declare builtins within functions");
5731 if (var->expression.vtype != TYPE_FUNCTION) {
5732 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5735 if (!parser_next(parser)) {
5736 parseerror(parser, "expected builtin number");
5740 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5741 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5743 parseerror(parser, "builtin number expected");
5746 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5749 parseerror(parser, "builtin number must be a compile time constant");
5752 if (number->expression.vtype == TYPE_INTEGER)
5753 builtin_num = number->constval.vint;
5754 else if (number->expression.vtype == TYPE_FLOAT)
5755 builtin_num = number->constval.vfloat;
5758 parseerror(parser, "builtin number must be an integer constant");
5763 fractional = modff(builtin_num, &integral);
5764 if (builtin_num < 0 || fractional != 0) {
5765 parseerror(parser, "builtin number must be an integer greater than zero");
5769 /* we only want the integral part anyways */
5770 builtin_num = integral;
5771 } else if (parser->tok == TOKEN_INTCONST) {
5772 builtin_num = parser_token(parser)->constval.i;
5774 parseerror(parser, "builtin number must be a compile time constant");
5778 if (var->hasvalue) {
5779 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5780 "builtin `%s` has already been defined\n"
5781 " -> previous declaration here: %s:%i",
5782 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5786 func = ast_function_new(ast_ctx(var), var->name, var);
5788 parseerror(parser, "failed to allocate function for `%s`", var->name);
5791 vec_push(parser->functions, func);
5793 func->builtin = -builtin_num-1;
5796 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5797 ? (parser->tok != ',' && parser->tok != ';')
5798 : (!parser_next(parser)))
5800 parseerror(parser, "expected comma or semicolon");
5802 ast_function_delete(func);
5803 var->constval.vfunc = NULL;
5807 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
5810 /* Note that fteqcc and most others don't even *have*
5811 * local arrays, so this is not a high priority.
5813 parseerror(parser, "TODO: initializers for local arrays");
5817 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
5819 parseerror(parser, "TODO: initializing global arrays is not supported yet!");
5822 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
5825 parseerror(parser, "cannot declare functions within functions");
5830 ast_ctx(proto) = parser_ctx(parser);
5832 if (!parse_function_body(parser, var))
5834 ast_delete(basetype);
5835 for (i = 0; i < vec_size(parser->gotos); ++i)
5836 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5837 vec_free(parser->gotos);
5838 vec_free(parser->labels);
5841 ast_expression *cexp;
5844 cexp = parse_expression_leave(parser, true, false, false);
5849 cval = (ast_value*)cexp;
5850 if (cval != parser->nil &&
5851 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5854 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5858 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5859 qualifier != CV_VAR)
5861 var->cvq = CV_CONST;
5863 if (cval == parser->nil)
5864 var->expression.flags |= AST_FLAG_INITIALIZED;
5867 var->hasvalue = true;
5868 if (cval->expression.vtype == TYPE_STRING)
5869 var->constval.vstring = parser_strdup(cval->constval.vstring);
5870 else if (cval->expression.vtype == TYPE_FIELD)
5871 var->constval.vfield = cval;
5873 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5879 shunt sy = { NULL, NULL, NULL, NULL };
5882 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5883 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5884 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5885 if (!parser_sy_apply_operator(parser, &sy))
5888 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5889 parseerror(parser, "internal error: leaked operands");
5890 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5901 if (parser->tok == ',') {
5902 if (!parser_next(parser)) {
5903 parseerror(parser, "expected another variable");
5907 if (parser->tok != TOKEN_IDENT) {
5908 parseerror(parser, "expected another variable");
5911 var = ast_value_copy(basetype);
5913 ast_value_set_name(var, parser_tokval(parser));
5914 if (!parser_next(parser)) {
5915 parseerror(parser, "error parsing variable declaration");
5921 if (parser->tok != ';') {
5922 parseerror(parser, "missing semicolon after variables");
5926 if (!parser_next(parser)) {
5927 parseerror(parser, "parse error after variable declaration");
5931 ast_delete(basetype);
5935 if (cleanvar && var)
5937 ast_delete(basetype);
5941 ast_delete(basetype);
5942 if (cleanvar && var)
5944 if (me[0]) ast_member_delete(me[0]);
5945 if (me[1]) ast_member_delete(me[1]);
5946 if (me[2]) ast_member_delete(me[2]);
5950 static bool parser_global_statement(parser_t *parser)
5954 bool is_static = false;
5955 uint32_t qflags = 0;
5956 ast_value *istype = NULL;
5957 char *vstring = NULL;
5959 if (parser->tok == TOKEN_IDENT)
5960 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5962 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5964 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5966 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5968 if (cvq == CV_WRONG)
5970 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5972 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5974 return parse_enum(parser);
5976 else if (parser->tok == TOKEN_KEYWORD)
5978 if (!strcmp(parser_tokval(parser), "typedef")) {
5979 if (!parser_next(parser)) {
5980 parseerror(parser, "expected type definition after 'typedef'");
5983 return parse_typedef(parser);
5985 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5988 else if (parser->tok == '#')
5990 return parse_pragma(parser);
5992 else if (parser->tok == '$')
5994 if (!parser_next(parser)) {
5995 parseerror(parser, "parse error");
6001 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
6007 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
6009 return util_crc16(old, str, strlen(str));
6012 static void progdefs_crc_file(const char *str)
6014 /* write to progdefs.h here */
6018 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
6020 old = progdefs_crc_sum(old, str);
6021 progdefs_crc_file(str);
6025 static void generate_checksum(parser_t *parser)
6027 uint16_t crc = 0xFFFF;
6031 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
6032 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
6034 progdefs_crc_file("\tint\tpad;\n");
6035 progdefs_crc_file("\tint\tofs_return[3];\n");
6036 progdefs_crc_file("\tint\tofs_parm0[3];\n");
6037 progdefs_crc_file("\tint\tofs_parm1[3];\n");
6038 progdefs_crc_file("\tint\tofs_parm2[3];\n");
6039 progdefs_crc_file("\tint\tofs_parm3[3];\n");
6040 progdefs_crc_file("\tint\tofs_parm4[3];\n");
6041 progdefs_crc_file("\tint\tofs_parm5[3];\n");
6042 progdefs_crc_file("\tint\tofs_parm6[3];\n");
6043 progdefs_crc_file("\tint\tofs_parm7[3];\n");
6045 for (i = 0; i < parser->crc_globals; ++i) {
6046 if (!ast_istype(parser->globals[i], ast_value))
6048 value = (ast_value*)(parser->globals[i]);
6049 switch (value->expression.vtype) {
6050 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6051 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6052 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6053 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6055 crc = progdefs_crc_both(crc, "\tint\t");
6058 crc = progdefs_crc_both(crc, value->name);
6059 crc = progdefs_crc_both(crc, ";\n");
6061 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
6062 for (i = 0; i < parser->crc_fields; ++i) {
6063 if (!ast_istype(parser->fields[i], ast_value))
6065 value = (ast_value*)(parser->fields[i]);
6066 switch (value->expression.next->vtype) {
6067 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6068 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6069 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6070 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6072 crc = progdefs_crc_both(crc, "\tint\t");
6075 crc = progdefs_crc_both(crc, value->name);
6076 crc = progdefs_crc_both(crc, ";\n");
6078 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
6080 parser->code->crc = crc;
6083 parser_t *parser_create()
6089 parser = (parser_t*)mem_a(sizeof(parser_t));
6093 memset(parser, 0, sizeof(*parser));
6095 if (!(parser->code = code_init())) {
6100 for (i = 0; i < operator_count; ++i) {
6101 if (operators[i].id == opid1('=')) {
6102 parser->assign_op = operators+i;
6106 if (!parser->assign_op) {
6107 printf("internal error: initializing parser: failed to find assign operator\n");
6112 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
6113 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
6114 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
6115 vec_push(parser->_blocktypedefs, 0);
6117 parser->aliases = util_htnew(PARSER_HT_SIZE);
6119 parser->ht_imm_string = util_htnew(512);
6122 vec_push(parser->correct_variables, correct_trie_new());
6123 vec_push(parser->correct_variables_score, NULL);
6125 empty_ctx.file = "<internal>";
6127 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
6128 parser->nil->cvq = CV_CONST;
6129 if (OPTS_FLAG(UNTYPED_NIL))
6130 util_htset(parser->htglobals, "nil", (void*)parser->nil);
6132 parser->max_param_count = 1;
6134 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
6135 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
6136 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
6138 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
6139 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
6140 parser->reserved_version->cvq = CV_CONST;
6141 parser->reserved_version->hasvalue = true;
6142 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
6143 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
6145 parser->reserved_version = NULL;
6151 static bool parser_compile(parser_t *parser)
6153 /* initial lexer/parser state */
6154 parser->lex->flags.noops = true;
6156 if (parser_next(parser))
6158 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
6160 if (!parser_global_statement(parser)) {
6161 if (parser->tok == TOKEN_EOF)
6162 parseerror(parser, "unexpected eof");
6163 else if (compile_errors)
6164 parseerror(parser, "there have been errors, bailing out");
6165 lex_close(parser->lex);
6171 parseerror(parser, "parse error");
6172 lex_close(parser->lex);
6177 lex_close(parser->lex);
6180 return !compile_errors;
6183 bool parser_compile_file(parser_t *parser, const char *filename)
6185 parser->lex = lex_open(filename);
6187 con_err("failed to open file \"%s\"\n", filename);
6190 return parser_compile(parser);
6193 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
6195 parser->lex = lex_open_string(str, len, name);
6197 con_err("failed to create lexer for string \"%s\"\n", name);
6200 return parser_compile(parser);
6203 static void parser_remove_ast(parser_t *parser)
6206 if (parser->ast_cleaned)
6208 parser->ast_cleaned = true;
6209 for (i = 0; i < vec_size(parser->accessors); ++i) {
6210 ast_delete(parser->accessors[i]->constval.vfunc);
6211 parser->accessors[i]->constval.vfunc = NULL;
6212 ast_delete(parser->accessors[i]);
6214 for (i = 0; i < vec_size(parser->functions); ++i) {
6215 ast_delete(parser->functions[i]);
6217 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6218 ast_delete(parser->imm_vector[i]);
6220 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6221 ast_delete(parser->imm_string[i]);
6223 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6224 ast_delete(parser->imm_float[i]);
6226 for (i = 0; i < vec_size(parser->fields); ++i) {
6227 ast_delete(parser->fields[i]);
6229 for (i = 0; i < vec_size(parser->globals); ++i) {
6230 ast_delete(parser->globals[i]);
6232 vec_free(parser->accessors);
6233 vec_free(parser->functions);
6234 vec_free(parser->imm_vector);
6235 vec_free(parser->imm_string);
6236 util_htdel(parser->ht_imm_string);
6237 vec_free(parser->imm_float);
6238 vec_free(parser->globals);
6239 vec_free(parser->fields);
6241 for (i = 0; i < vec_size(parser->variables); ++i)
6242 util_htdel(parser->variables[i]);
6243 vec_free(parser->variables);
6244 vec_free(parser->_blocklocals);
6245 vec_free(parser->_locals);
6248 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
6249 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
6251 vec_free(parser->correct_variables);
6252 vec_free(parser->correct_variables_score);
6255 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6256 ast_delete(parser->_typedefs[i]);
6257 vec_free(parser->_typedefs);
6258 for (i = 0; i < vec_size(parser->typedefs); ++i)
6259 util_htdel(parser->typedefs[i]);
6260 vec_free(parser->typedefs);
6261 vec_free(parser->_blocktypedefs);
6263 vec_free(parser->_block_ctx);
6265 vec_free(parser->labels);
6266 vec_free(parser->gotos);
6267 vec_free(parser->breaks);
6268 vec_free(parser->continues);
6270 ast_value_delete(parser->nil);
6272 ast_value_delete(parser->const_vec[0]);
6273 ast_value_delete(parser->const_vec[1]);
6274 ast_value_delete(parser->const_vec[2]);
6276 util_htdel(parser->aliases);
6277 intrin_intrinsics_destroy(parser);
6280 void parser_cleanup(parser_t *parser)
6282 parser_remove_ast(parser);
6283 code_cleanup(parser->code);
6288 bool parser_finish(parser_t *parser, const char *output)
6294 if (compile_errors) {
6295 con_out("*** there were compile errors\n");
6299 ir = ir_builder_new("gmqcc_out");
6301 con_out("failed to allocate builder\n");
6305 for (i = 0; i < vec_size(parser->fields); ++i) {
6308 if (!ast_istype(parser->fields[i], ast_value))
6310 field = (ast_value*)parser->fields[i];
6311 hasvalue = field->hasvalue;
6312 field->hasvalue = false;
6313 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6314 con_out("failed to generate field %s\n", field->name);
6315 ir_builder_delete(ir);
6320 ast_expression *subtype;
6321 field->hasvalue = true;
6322 subtype = field->expression.next;
6323 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6324 if (subtype->vtype == TYPE_FIELD)
6325 ifld->fieldtype = subtype->next->vtype;
6326 else if (subtype->vtype == TYPE_FUNCTION)
6327 ifld->outtype = subtype->next->vtype;
6328 (void)!ir_value_set_field(field->ir_v, ifld);
6331 for (i = 0; i < vec_size(parser->globals); ++i) {
6333 if (!ast_istype(parser->globals[i], ast_value))
6335 asvalue = (ast_value*)(parser->globals[i]);
6336 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6337 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6338 "unused global: `%s`", asvalue->name);
6340 if (!ast_global_codegen(asvalue, ir, false)) {
6341 con_out("failed to generate global %s\n", asvalue->name);
6342 ir_builder_delete(ir);
6346 /* Build function vararg accessor ast tree now before generating
6347 * immediates, because the accessors may add new immediates
6349 for (i = 0; i < vec_size(parser->functions); ++i) {
6350 ast_function *f = parser->functions[i];
6352 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6353 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6354 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6355 con_out("failed to generate vararg setter for %s\n", f->name);
6356 ir_builder_delete(ir);
6359 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6360 con_out("failed to generate vararg getter for %s\n", f->name);
6361 ir_builder_delete(ir);
6365 ast_delete(f->varargs);
6370 /* Now we can generate immediates */
6371 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6372 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
6373 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
6374 ir_builder_delete(ir);
6378 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6379 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
6380 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
6381 ir_builder_delete(ir);
6385 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6386 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
6387 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
6388 ir_builder_delete(ir);
6392 for (i = 0; i < vec_size(parser->globals); ++i) {
6394 if (!ast_istype(parser->globals[i], ast_value))
6396 asvalue = (ast_value*)(parser->globals[i]);
6397 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6399 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6400 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6401 "uninitialized constant: `%s`",
6403 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6404 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6405 "uninitialized global: `%s`",
6408 if (!ast_generate_accessors(asvalue, ir)) {
6409 ir_builder_delete(ir);
6413 for (i = 0; i < vec_size(parser->fields); ++i) {
6415 asvalue = (ast_value*)(parser->fields[i]->next);
6417 if (!ast_istype((ast_expression*)asvalue, ast_value))
6419 if (asvalue->expression.vtype != TYPE_ARRAY)
6421 if (!ast_generate_accessors(asvalue, ir)) {
6422 ir_builder_delete(ir);
6426 if (parser->reserved_version &&
6427 !ast_global_codegen(parser->reserved_version, ir, false))
6429 con_out("failed to generate reserved::version");
6430 ir_builder_delete(ir);
6433 for (i = 0; i < vec_size(parser->functions); ++i) {
6434 ast_function *f = parser->functions[i];
6435 if (!ast_function_codegen(f, ir)) {
6436 con_out("failed to generate function %s\n", f->name);
6437 ir_builder_delete(ir);
6442 generate_checksum(parser);
6443 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6444 ir_builder_dump(ir, con_out);
6445 for (i = 0; i < vec_size(parser->functions); ++i) {
6446 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6447 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6448 ir_builder_delete(ir);
6452 parser_remove_ast(parser);
6454 if (compile_Werrors) {
6455 con_out("*** there were warnings treated as errors\n");
6456 compile_show_werrors();
6461 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6462 ir_builder_dump(ir, con_out);
6464 if (!ir_builder_generate(parser->code, ir, output)) {
6465 con_out("*** failed to generate output file\n");
6466 ir_builder_delete(ir);
6470 ir_builder_delete(ir);