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]);
1038 * Okay lets designate what the hell is an acceptable use
1039 * of the ^ operator. In many vector processing units, XOR
1040 * is allowed to be used on vectors, but only if the first
1041 * operand is a vector, the second operand can be a float
1042 * or vector. It's never legal for the first operand to be
1043 * a float, and then the following operand to be a vector.
1044 * Further more, the only time it is legal to do XOR otherwise
1045 * is when both operand are floats. This nicely crafted if
1046 * statement catches them all.
1048 * In the event that the first operand is a vector, two
1049 * possible situations can arise, thus, each element of
1050 * vector A (operand A) is exclusive-ORed with the corresponding
1051 * element of vector B (operand B), If B is scalar, the
1052 * scalar value is first replicated for each element.
1054 * The QCVM itself lacks a BITXOR instruction. Thus emulating
1055 * the mathematics of it is required. The following equation
1056 * is used: (LHS | RHS) & ~(LHS & RHS). However, due to the
1057 * QCVM also lacking a BITNEG instruction, we need to emulate
1058 * ~FOO with -1 - FOO, the whole process becoming this nicely
1059 * crafted expression: (LHS | RHS) & (-1 - (LHS & RHS)).
1061 * When A is not scalar, this process is repeated for all
1062 * components of vector A with the value in operand B,
1063 * only if operand B is scalar. When A is not scalar, and B
1064 * is also not scalar, this process is repeated for all
1065 * components of the vector A with the components of vector B.
1066 * Finally when A is scalar and B is scalar, this process is
1067 * simply used once for A and B being LHS and RHS respectfully.
1069 * Yes the semantics are a bit strange (no pun intended).
1070 * But then again BITXOR is strange itself, consdering it's
1071 * commutative, assocative, and elements of the BITXOR operation
1072 * are their own inverse.
1074 if ( !(exprs[0]->vtype == TYPE_FLOAT && exprs[1]->vtype == TYPE_FLOAT) &&
1075 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_FLOAT) &&
1076 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_VECTOR))
1078 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
1079 type_name[exprs[0]->vtype],
1080 type_name[exprs[1]->vtype]);
1085 * IF the first expression is float, the following will be too
1086 * since scalar ^ vector is not allowed.
1088 if (exprs[0]->vtype == TYPE_FLOAT) {
1089 if(CanConstFold(exprs[0], exprs[1])) {
1090 out = (ast_expression*)parser_const_float(parser, (float)((qcint)(ConstF(0)) ^ ((qcint)(ConstF(1)))));
1092 ast_binary *expr = ast_binary_new(
1095 (ast_expression*)parser_const_float_neg1(parser),
1096 (ast_expression*)ast_binary_new(
1103 expr->refs = AST_REF_NONE;
1105 out = (ast_expression*)
1109 (ast_expression*)ast_binary_new(
1115 (ast_expression*)expr
1117 out->refs = AST_REF_LEFT;
1121 * The first is a vector: vector is allowed to xor with vector and
1122 * with scalar, branch here for the second operand.
1124 if (exprs[1]->vtype == TYPE_VECTOR) {
1126 * Xor all the values of the vector components against the
1127 * vectors components in question.
1129 if (CanConstFold(exprs[0], exprs[1])) {
1130 out = (ast_expression*)parser_const_vector_f(
1132 (float)(((qcint)(ConstV(0).x)) ^ ((qcint)(ConstV(1).x))),
1133 (float)(((qcint)(ConstV(0).y)) ^ ((qcint)(ConstV(1).y))),
1134 (float)(((qcint)(ConstV(0).z)) ^ ((qcint)(ConstV(1).z)))
1137 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor for vector against vector");
1142 * Xor all the values of the vector components against the
1143 * scalar in question.
1145 if (CanConstFold(exprs[0], exprs[1])) {
1146 out = (ast_expression*)parser_const_vector_f(
1148 (float)(((qcint)(ConstV(0).x)) ^ ((qcint)(ConstF(1)))),
1149 (float)(((qcint)(ConstV(0).y)) ^ ((qcint)(ConstF(1)))),
1150 (float)(((qcint)(ConstV(0).z)) ^ ((qcint)(ConstF(1))))
1153 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor for vector against float");
1161 case opid2('<','<'):
1162 case opid2('>','>'):
1163 if (CanConstFold(exprs[0], exprs[1]) && ! NotSameType(TYPE_FLOAT)) {
1164 if (op->id == opid2('<','<'))
1165 out = (ast_expression*)parser_const_float(parser, (double)((unsigned int)(ConstF(0)) << (unsigned int)(ConstF(1))));
1167 out = (ast_expression*)parser_const_float(parser, (double)((unsigned int)(ConstF(0)) >> (unsigned int)(ConstF(1))));
1170 case opid3('<','<','='):
1171 case opid3('>','>','='):
1172 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
1175 case opid2('|','|'):
1176 generated_op += 1; /* INSTR_OR */
1177 case opid2('&','&'):
1178 generated_op += INSTR_AND;
1179 if (CanConstFold(exprs[0], exprs[1]))
1181 if (OPTS_FLAG(PERL_LOGIC)) {
1182 if (immediate_is_true(ctx, asvalue[0]))
1186 out = (ast_expression*)parser_const_float(parser,
1187 ( (generated_op == INSTR_OR)
1188 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
1189 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
1194 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
1195 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1196 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1197 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
1200 for (i = 0; i < 2; ++i) {
1201 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->vtype == TYPE_VECTOR) {
1202 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
1204 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1206 exprs[i] = out; out = NULL;
1207 if (OPTS_FLAG(PERL_LOGIC)) {
1208 /* here we want to keep the right expressions' type */
1212 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->vtype == TYPE_STRING) {
1213 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
1215 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1217 exprs[i] = out; out = NULL;
1218 if (OPTS_FLAG(PERL_LOGIC)) {
1219 /* here we want to keep the right expressions' type */
1224 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1228 case opid2('?',':'):
1229 if (vec_last(sy->paren) != PAREN_TERNARY2) {
1230 compile_error(ctx, "mismatched parenthesis/ternary");
1234 if (!ast_compare_type(exprs[1], exprs[2])) {
1235 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
1236 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
1237 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
1240 if (CanConstFold1(exprs[0]))
1241 out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
1243 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
1246 case opid2('*', '*'):
1247 if (NotSameType(TYPE_FLOAT)) {
1248 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1249 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1250 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
1256 if (CanConstFold(exprs[0], exprs[1])) {
1257 out = (ast_expression*)parser_const_float(parser, powf(ConstF(0), ConstF(1)));
1259 ast_call *gencall = ast_call_new(parser_ctx(parser), intrin_func(parser, "pow"));
1260 vec_push(gencall->params, exprs[0]);
1261 vec_push(gencall->params, exprs[1]);
1262 out = (ast_expression*)gencall;
1266 case opid3('<','=','>'): /* -1, 0, or 1 */
1267 if (NotSameType(TYPE_FLOAT)) {
1268 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1269 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1270 compile_error(ctx, "invalid types used in comparision: %s and %s",
1276 if (CanConstFold(exprs[0], exprs[1])) {
1277 if (ConstF(0) < ConstF(1))
1278 out = (ast_expression*)parser_const_float_neg1(parser);
1279 else if (ConstF(0) == ConstF(1))
1280 out = (ast_expression*)parser_const_float_0(parser);
1281 else if (ConstF(0) > ConstF(1))
1282 out = (ast_expression*)parser_const_float_1(parser);
1284 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
1286 eq->refs = AST_REF_NONE;
1289 out = (ast_expression*)ast_ternary_new(ctx,
1290 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
1292 (ast_expression*)parser_const_float_neg1(parser),
1295 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
1297 (ast_expression*)parser_const_float_0(parser),
1300 (ast_expression*)parser_const_float_1(parser)
1310 generated_op += 1; /* INSTR_GT */
1312 generated_op += 1; /* INSTR_LT */
1313 case opid2('>', '='):
1314 generated_op += 1; /* INSTR_GE */
1315 case opid2('<', '='):
1316 generated_op += INSTR_LE;
1317 if (NotSameType(TYPE_FLOAT)) {
1318 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1319 type_name[exprs[0]->vtype],
1320 type_name[exprs[1]->vtype]);
1323 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1325 case opid2('!', '='):
1326 if (exprs[0]->vtype != exprs[1]->vtype) {
1327 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1328 type_name[exprs[0]->vtype],
1329 type_name[exprs[1]->vtype]);
1332 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->vtype], exprs[0], exprs[1]);
1334 case opid2('=', '='):
1335 if (exprs[0]->vtype != exprs[1]->vtype) {
1336 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1337 type_name[exprs[0]->vtype],
1338 type_name[exprs[1]->vtype]);
1341 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->vtype], exprs[0], exprs[1]);
1345 if (ast_istype(exprs[0], ast_entfield)) {
1346 ast_expression *field = ((ast_entfield*)exprs[0])->field;
1347 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1348 exprs[0]->vtype == TYPE_FIELD &&
1349 exprs[0]->next->vtype == TYPE_VECTOR)
1351 assignop = type_storep_instr[TYPE_VECTOR];
1354 assignop = type_storep_instr[exprs[0]->vtype];
1355 if (assignop == VINSTR_END || !ast_compare_type(field->next, exprs[1]))
1357 ast_type_to_string(field->next, ty1, sizeof(ty1));
1358 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1359 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1360 field->next->vtype == TYPE_FUNCTION &&
1361 exprs[1]->vtype == TYPE_FUNCTION)
1363 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1364 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1367 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1372 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1373 exprs[0]->vtype == TYPE_FIELD &&
1374 exprs[0]->next->vtype == TYPE_VECTOR)
1376 assignop = type_store_instr[TYPE_VECTOR];
1379 assignop = type_store_instr[exprs[0]->vtype];
1382 if (assignop == VINSTR_END) {
1383 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1384 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1385 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1387 else if (!ast_compare_type(exprs[0], exprs[1]))
1389 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1390 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1391 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1392 exprs[0]->vtype == TYPE_FUNCTION &&
1393 exprs[1]->vtype == TYPE_FUNCTION)
1395 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1396 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1399 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1402 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1403 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1405 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1407 case opid3('+','+','P'):
1408 case opid3('-','-','P'):
1410 if (exprs[0]->vtype != TYPE_FLOAT) {
1411 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1412 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
1415 if (op->id == opid3('+','+','P'))
1416 addop = INSTR_ADD_F;
1418 addop = INSTR_SUB_F;
1419 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1420 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1422 if (ast_istype(exprs[0], ast_entfield)) {
1423 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1425 (ast_expression*)parser_const_float_1(parser));
1427 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1429 (ast_expression*)parser_const_float_1(parser));
1432 case opid3('S','+','+'):
1433 case opid3('S','-','-'):
1435 if (exprs[0]->vtype != TYPE_FLOAT) {
1436 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1437 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
1440 if (op->id == opid3('S','+','+')) {
1441 addop = INSTR_ADD_F;
1442 subop = INSTR_SUB_F;
1444 addop = INSTR_SUB_F;
1445 subop = INSTR_ADD_F;
1447 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1448 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1450 if (ast_istype(exprs[0], ast_entfield)) {
1451 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1453 (ast_expression*)parser_const_float_1(parser));
1455 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1457 (ast_expression*)parser_const_float_1(parser));
1461 out = (ast_expression*)ast_binary_new(ctx, subop,
1463 (ast_expression*)parser_const_float_1(parser));
1465 case opid2('+','='):
1466 case opid2('-','='):
1467 if (exprs[0]->vtype != exprs[1]->vtype ||
1468 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
1470 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1471 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1472 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1476 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1477 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1479 if (ast_istype(exprs[0], ast_entfield))
1480 assignop = type_storep_instr[exprs[0]->vtype];
1482 assignop = type_store_instr[exprs[0]->vtype];
1483 switch (exprs[0]->vtype) {
1485 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1486 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1487 exprs[0], exprs[1]);
1490 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1491 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1492 exprs[0], exprs[1]);
1495 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1496 type_name[exprs[0]->vtype],
1497 type_name[exprs[1]->vtype]);
1501 case opid2('*','='):
1502 case opid2('/','='):
1503 if (exprs[1]->vtype != TYPE_FLOAT ||
1504 !(exprs[0]->vtype == TYPE_FLOAT ||
1505 exprs[0]->vtype == TYPE_VECTOR))
1507 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1508 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1509 compile_error(ctx, "invalid types used in expression: %s and %s",
1513 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1514 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1516 if (ast_istype(exprs[0], ast_entfield))
1517 assignop = type_storep_instr[exprs[0]->vtype];
1519 assignop = type_store_instr[exprs[0]->vtype];
1520 switch (exprs[0]->vtype) {
1522 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1523 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1524 exprs[0], exprs[1]);
1527 if (op->id == opid2('*','=')) {
1528 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1529 exprs[0], exprs[1]);
1531 /* there's no DIV_VF */
1532 if (CanConstFold1(exprs[1])) {
1533 out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
1535 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1536 (ast_expression*)parser_const_float_1(parser),
1540 compile_error(ctx, "internal error: failed to generate division");
1543 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1548 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1549 type_name[exprs[0]->vtype],
1550 type_name[exprs[1]->vtype]);
1554 case opid2('&','='):
1555 case opid2('|','='):
1556 if (NotSameType(TYPE_FLOAT)) {
1557 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1558 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1559 compile_error(ctx, "invalid types used in expression: %s and %s",
1563 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1564 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1566 if (ast_istype(exprs[0], ast_entfield))
1567 assignop = type_storep_instr[exprs[0]->vtype];
1569 assignop = type_store_instr[exprs[0]->vtype];
1570 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1571 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1572 exprs[0], exprs[1]);
1574 case opid3('&','~','='):
1575 /* This is like: a &= ~(b);
1576 * But QC has no bitwise-not, so we implement it as
1579 if (NotSameType(TYPE_FLOAT)) {
1580 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1581 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1582 compile_error(ctx, "invalid types used in expression: %s and %s",
1586 if (ast_istype(exprs[0], ast_entfield))
1587 assignop = type_storep_instr[exprs[0]->vtype];
1589 assignop = type_store_instr[exprs[0]->vtype];
1590 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1593 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1594 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1596 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1597 asbinstore->keep_dest = true;
1598 out = (ast_expression*)asbinstore;
1601 case opid2('~', 'P'):
1602 if (exprs[0]->vtype != TYPE_FLOAT) {
1603 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1604 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1608 if(CanConstFold1(exprs[0]))
1609 out = (ast_expression*)parser_const_float(parser, ~(qcint)ConstF(0));
1611 out = (ast_expression*)
1612 ast_binary_new(ctx, INSTR_SUB_F, (ast_expression*)parser_const_float_neg1(parser), exprs[0]);
1618 compile_error(ctx, "failed to apply operator %s", op->op);
1622 vec_push(sy->out, syexp(ctx, out));
1626 static bool parser_close_call(parser_t *parser, shunt *sy)
1628 /* was a function call */
1629 ast_expression *fun;
1630 ast_value *funval = NULL;
1634 size_t paramcount, i;
1636 fid = vec_last(sy->ops).off;
1637 vec_shrinkby(sy->ops, 1);
1639 /* out[fid] is the function
1640 * everything above is parameters...
1642 if (!vec_size(sy->argc)) {
1643 parseerror(parser, "internal error: no argument counter available");
1647 paramcount = vec_last(sy->argc);
1650 if (vec_size(sy->out) < fid) {
1651 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1652 (unsigned long)vec_size(sy->out),
1654 (unsigned long)paramcount);
1658 fun = sy->out[fid].out;
1660 if (fun == intrinsic_debug_typestring) {
1662 if (fid+2 != vec_size(sy->out) ||
1663 vec_last(sy->out).block)
1665 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1668 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1669 ast_unref(vec_last(sy->out).out);
1670 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1671 (ast_expression*)parser_const_string(parser, ty, false));
1672 vec_shrinkby(sy->out, 1);
1676 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1680 if (fid+1 < vec_size(sy->out))
1683 if (fid+1 + paramcount != vec_size(sy->out)) {
1684 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1685 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1689 for (i = 0; i < paramcount; ++i)
1690 vec_push(call->params, sy->out[fid+1 + i].out);
1691 vec_shrinkby(sy->out, paramcount);
1692 (void)!ast_call_check_types(call, parser->function->vtype->expression.varparam);
1693 if (parser->max_param_count < paramcount)
1694 parser->max_param_count = paramcount;
1696 if (ast_istype(fun, ast_value)) {
1697 funval = (ast_value*)fun;
1698 if ((fun->flags & AST_FLAG_VARIADIC) &&
1699 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1701 call->va_count = (ast_expression*)parser_const_float(parser, (double)paramcount);
1705 /* overwrite fid, the function, with a call */
1706 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1708 if (fun->vtype != TYPE_FUNCTION) {
1709 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1714 parseerror(parser, "could not determine function return type");
1717 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1719 if (fun->flags & AST_FLAG_DEPRECATED) {
1721 return !parsewarning(parser, WARN_DEPRECATED,
1722 "call to function (which is marked deprecated)\n",
1723 "-> it has been declared here: %s:%i",
1724 ast_ctx(fun).file, ast_ctx(fun).line);
1727 return !parsewarning(parser, WARN_DEPRECATED,
1728 "call to `%s` (which is marked deprecated)\n"
1729 "-> `%s` declared here: %s:%i",
1730 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1732 return !parsewarning(parser, WARN_DEPRECATED,
1733 "call to `%s` (deprecated: %s)\n"
1734 "-> `%s` declared here: %s:%i",
1735 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1739 if (vec_size(fun->params) != paramcount &&
1740 !((fun->flags & AST_FLAG_VARIADIC) &&
1741 vec_size(fun->params) < paramcount))
1743 const char *fewmany = (vec_size(fun->params) > paramcount) ? "few" : "many";
1745 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1746 "too %s parameters for call to %s: expected %i, got %i\n"
1747 " -> `%s` has been declared here: %s:%i",
1748 fewmany, fval->name, (int)vec_size(fun->params), (int)paramcount,
1749 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1751 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1752 "too %s parameters for function call: expected %i, got %i\n"
1753 " -> it has been declared here: %s:%i",
1754 fewmany, (int)vec_size(fun->params), (int)paramcount,
1755 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1762 static bool parser_close_paren(parser_t *parser, shunt *sy)
1764 if (!vec_size(sy->ops)) {
1765 parseerror(parser, "unmatched closing paren");
1769 while (vec_size(sy->ops)) {
1770 if (vec_last(sy->ops).isparen) {
1771 if (vec_last(sy->paren) == PAREN_FUNC) {
1773 if (!parser_close_call(parser, sy))
1777 if (vec_last(sy->paren) == PAREN_EXPR) {
1779 if (!vec_size(sy->out)) {
1780 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1781 vec_shrinkby(sy->ops, 1);
1784 vec_shrinkby(sy->ops, 1);
1787 if (vec_last(sy->paren) == PAREN_INDEX) {
1789 /* pop off the parenthesis */
1790 vec_shrinkby(sy->ops, 1);
1791 /* then apply the index operator */
1792 if (!parser_sy_apply_operator(parser, sy))
1796 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1797 vec_last(sy->paren) = PAREN_TERNARY2;
1798 /* pop off the parenthesis */
1799 vec_shrinkby(sy->ops, 1);
1802 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1805 if (!parser_sy_apply_operator(parser, sy))
1811 static void parser_reclassify_token(parser_t *parser)
1814 for (i = 0; i < operator_count; ++i) {
1815 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1816 parser->tok = TOKEN_OPERATOR;
1822 static ast_expression* parse_vararg_do(parser_t *parser)
1824 ast_expression *idx, *out;
1826 ast_value *funtype = parser->function->vtype;
1827 lex_ctx ctx = parser_ctx(parser);
1829 if (!parser->function->varargs) {
1830 parseerror(parser, "function has no variable argument list");
1834 if (!parser_next(parser) || parser->tok != '(') {
1835 parseerror(parser, "expected parameter index and type in parenthesis");
1838 if (!parser_next(parser)) {
1839 parseerror(parser, "error parsing parameter index");
1843 idx = parse_expression_leave(parser, true, false, false);
1847 if (parser->tok != ',') {
1848 if (parser->tok != ')') {
1850 parseerror(parser, "expected comma after parameter index");
1853 /* vararg piping: ...(start) */
1854 out = (ast_expression*)ast_argpipe_new(ctx, idx);
1858 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1860 parseerror(parser, "expected typename for vararg");
1864 typevar = parse_typename(parser, NULL, NULL);
1870 if (parser->tok != ')') {
1872 ast_delete(typevar);
1873 parseerror(parser, "expected closing paren");
1877 if (funtype->expression.varparam &&
1878 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1882 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1883 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1884 compile_error(ast_ctx(typevar),
1885 "function was declared to take varargs of type `%s`, requested type is: %s",
1889 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1890 ast_type_adopt(out, typevar);
1891 ast_delete(typevar);
1895 static ast_expression* parse_vararg(parser_t *parser)
1897 bool old_noops = parser->lex->flags.noops;
1899 ast_expression *out;
1901 parser->lex->flags.noops = true;
1902 out = parse_vararg_do(parser);
1904 parser->lex->flags.noops = old_noops;
1908 /* not to be exposed */
1909 extern bool ftepp_predef_exists(const char *name);
1911 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1913 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1914 parser->tok == TOKEN_IDENT &&
1915 !strcmp(parser_tokval(parser), "_"))
1917 /* a translatable string */
1920 parser->lex->flags.noops = true;
1921 if (!parser_next(parser) || parser->tok != '(') {
1922 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1925 parser->lex->flags.noops = false;
1926 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1927 parseerror(parser, "expected a constant string in translatable-string extension");
1930 val = parser_const_string(parser, parser_tokval(parser), true);
1933 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1935 if (!parser_next(parser) || parser->tok != ')') {
1936 parseerror(parser, "expected closing paren after translatable string");
1941 else if (parser->tok == TOKEN_DOTS)
1944 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1945 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1948 va = parse_vararg(parser);
1951 vec_push(sy->out, syexp(parser_ctx(parser), va));
1954 else if (parser->tok == TOKEN_FLOATCONST) {
1956 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1959 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1962 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1964 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1967 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1970 else if (parser->tok == TOKEN_STRINGCONST) {
1972 val = parser_const_string(parser, parser_tokval(parser), false);
1975 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1978 else if (parser->tok == TOKEN_VECTORCONST) {
1980 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1983 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1986 else if (parser->tok == TOKEN_IDENT)
1988 const char *ctoken = parser_tokval(parser);
1989 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1990 ast_expression *var;
1991 /* a_vector.{x,y,z} */
1992 if (!vec_size(sy->ops) ||
1993 !vec_last(sy->ops).etype ||
1994 operators[vec_last(sy->ops).etype-1].id != opid1('.') ||
1995 (prev >= intrinsic_debug_typestring &&
1996 prev <= intrinsic_debug_typestring))
1998 /* When adding more intrinsics, fix the above condition */
2001 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
2003 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
2005 var = parser_find_var(parser, parser_tokval(parser));
2007 var = parser_find_field(parser, parser_tokval(parser));
2009 if (!var && with_labels) {
2010 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
2012 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
2013 var = (ast_expression*)lbl;
2014 vec_push(parser->labels, lbl);
2017 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
2018 var = (ast_expression*)parser_const_string(parser, parser->function->name, false);
2021 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
2022 var = (ast_expression*)intrinsic_debug_typestring;
2024 /* now we try for the real intrinsic hashtable. If the string
2025 * begins with __builtin, we simply skip past it, otherwise we
2026 * use the identifier as is.
2028 else if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
2029 var = intrin_func(parser, parser_tokval(parser) + 10 /* skip __builtin */);
2033 char *correct = NULL;
2037 * sometimes people use preprocessing predefs without enabling them
2038 * i've done this thousands of times already myself. Lets check for
2039 * it in the predef table. And diagnose it better :)
2041 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
2042 parseerror(parser, "unexpected identifier: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
2047 * TODO: determine the best score for the identifier: be it
2048 * a variable, a field.
2050 * We should also consider adding correction tables for
2051 * other things as well.
2053 if (OPTS_OPTION_BOOL(OPTION_CORRECTION) && strlen(parser_tokval(parser)) <= 16) {
2055 correct_init(&corr);
2057 for (i = 0; i < vec_size(parser->correct_variables); i++) {
2058 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
2059 if (strcmp(correct, parser_tokval(parser))) {
2061 } else if (correct) {
2066 correct_free(&corr);
2069 parseerror(parser, "unexpected identifier: %s (did you mean %s?)", parser_tokval(parser), correct);
2074 parseerror(parser, "unexpected identifier: %s", parser_tokval(parser));
2080 if (ast_istype(var, ast_value)) {
2081 ((ast_value*)var)->uses++;
2083 else if (ast_istype(var, ast_member)) {
2084 ast_member *mem = (ast_member*)var;
2085 if (ast_istype(mem->owner, ast_value))
2086 ((ast_value*)(mem->owner))->uses++;
2089 vec_push(sy->out, syexp(parser_ctx(parser), var));
2092 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
2096 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
2098 ast_expression *expr = NULL;
2101 bool wantop = false;
2102 /* only warn once about an assignment in a truth value because the current code
2103 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
2105 bool warn_truthvalue = true;
2107 /* count the parens because an if starts with one, so the
2108 * end of a condition is an unmatched closing paren
2112 memset(&sy, 0, sizeof(sy));
2114 parser->lex->flags.noops = false;
2116 parser_reclassify_token(parser);
2120 if (parser->tok == TOKEN_TYPENAME) {
2121 parseerror(parser, "unexpected typename `%s`", parser_tokval(parser));
2125 if (parser->tok == TOKEN_OPERATOR)
2127 /* classify the operator */
2128 const oper_info *op;
2129 const oper_info *olast = NULL;
2131 for (o = 0; o < operator_count; ++o) {
2132 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
2133 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
2134 !strcmp(parser_tokval(parser), operators[o].op))
2139 if (o == operator_count) {
2140 compile_error(parser_ctx(parser), "unknown operator: %s", parser_tokval(parser));
2143 /* found an operator */
2146 /* when declaring variables, a comma starts a new variable */
2147 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
2148 /* fixup the token */
2153 /* a colon without a pervious question mark cannot be a ternary */
2154 if (!ternaries && op->id == opid2(':','?')) {
2159 if (op->id == opid1(',')) {
2160 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2161 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
2165 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2166 olast = &operators[vec_last(sy.ops).etype-1];
2168 #define IsAssignOp(x) (\
2169 (x) == opid1('=') || \
2170 (x) == opid2('+','=') || \
2171 (x) == opid2('-','=') || \
2172 (x) == opid2('*','=') || \
2173 (x) == opid2('/','=') || \
2174 (x) == opid2('%','=') || \
2175 (x) == opid2('&','=') || \
2176 (x) == opid2('|','=') || \
2177 (x) == opid3('&','~','=') \
2179 if (warn_truthvalue) {
2180 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
2181 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
2182 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
2185 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
2186 warn_truthvalue = false;
2191 (op->prec < olast->prec) ||
2192 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
2194 if (!parser_sy_apply_operator(parser, &sy))
2196 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2197 olast = &operators[vec_last(sy.ops).etype-1];
2202 if (op->id == opid1('(')) {
2204 size_t sycount = vec_size(sy.out);
2205 /* we expected an operator, this is the function-call operator */
2206 vec_push(sy.paren, PAREN_FUNC);
2207 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
2208 vec_push(sy.argc, 0);
2210 vec_push(sy.paren, PAREN_EXPR);
2211 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2214 } else if (op->id == opid1('[')) {
2216 parseerror(parser, "unexpected array subscript");
2219 vec_push(sy.paren, PAREN_INDEX);
2220 /* push both the operator and the paren, this makes life easier */
2221 vec_push(sy.ops, syop(parser_ctx(parser), op));
2222 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2224 } else if (op->id == opid2('?',':')) {
2225 vec_push(sy.ops, syop(parser_ctx(parser), op));
2226 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2229 vec_push(sy.paren, PAREN_TERNARY1);
2230 } else if (op->id == opid2(':','?')) {
2231 if (!vec_size(sy.paren)) {
2232 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2235 if (vec_last(sy.paren) != PAREN_TERNARY1) {
2236 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2239 if (!parser_close_paren(parser, &sy))
2241 vec_push(sy.ops, syop(parser_ctx(parser), op));
2245 vec_push(sy.ops, syop(parser_ctx(parser), op));
2246 wantop = !!(op->flags & OP_SUFFIX);
2249 else if (parser->tok == ')') {
2250 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2251 if (!parser_sy_apply_operator(parser, &sy))
2254 if (!vec_size(sy.paren))
2257 if (vec_last(sy.paren) == PAREN_TERNARY1) {
2258 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
2261 if (!parser_close_paren(parser, &sy))
2264 /* must be a function call without parameters */
2265 if (vec_last(sy.paren) != PAREN_FUNC) {
2266 parseerror(parser, "closing paren in invalid position");
2269 if (!parser_close_paren(parser, &sy))
2274 else if (parser->tok == '(') {
2275 parseerror(parser, "internal error: '(' should be classified as operator");
2278 else if (parser->tok == '[') {
2279 parseerror(parser, "internal error: '[' should be classified as operator");
2282 else if (parser->tok == ']') {
2283 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2284 if (!parser_sy_apply_operator(parser, &sy))
2287 if (!vec_size(sy.paren))
2289 if (vec_last(sy.paren) != PAREN_INDEX) {
2290 parseerror(parser, "mismatched parentheses, unexpected ']'");
2293 if (!parser_close_paren(parser, &sy))
2298 if (!parse_sya_operand(parser, &sy, with_labels))
2301 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
2302 vec_last(sy.argc)++;
2307 /* in this case we might want to allow constant string concatenation */
2308 bool concatenated = false;
2309 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
2310 ast_expression *lexpr = vec_last(sy.out).out;
2311 if (ast_istype(lexpr, ast_value)) {
2312 ast_value *last = (ast_value*)lexpr;
2313 if (last->isimm == true && last->cvq == CV_CONST &&
2314 last->hasvalue && last->expression.vtype == TYPE_STRING)
2316 char *newstr = NULL;
2317 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
2318 vec_last(sy.out).out = (ast_expression*)parser_const_string(parser, newstr, false);
2320 concatenated = true;
2324 if (!concatenated) {
2325 parseerror(parser, "expected operator or end of statement");
2330 if (!parser_next(parser)) {
2333 if (parser->tok == ';' ||
2334 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
2335 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
2341 while (vec_size(sy.ops)) {
2342 if (!parser_sy_apply_operator(parser, &sy))
2346 parser->lex->flags.noops = true;
2347 if (vec_size(sy.out) != 1) {
2348 parseerror(parser, "expression with not 1 but %lu output values...", (unsigned long) vec_size(sy.out));
2351 expr = sy.out[0].out;
2354 if (vec_size(sy.paren)) {
2355 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
2363 parser->lex->flags.noops = true;
2364 for (i = 0; i < vec_size(sy.out); ++i) {
2366 ast_unref(sy.out[i].out);
2375 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
2377 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
2380 if (parser->tok != ';') {
2381 parseerror(parser, "semicolon expected after expression");
2385 if (!parser_next(parser)) {
2392 static void parser_enterblock(parser_t *parser)
2394 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2395 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2396 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2397 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2398 vec_push(parser->_block_ctx, parser_ctx(parser));
2401 vec_push(parser->correct_variables, correct_trie_new());
2402 vec_push(parser->correct_variables_score, NULL);
2405 static bool parser_leaveblock(parser_t *parser)
2408 size_t locals, typedefs;
2410 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2411 parseerror(parser, "internal error: parser_leaveblock with no block");
2415 util_htdel(vec_last(parser->variables));
2416 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2418 vec_pop(parser->variables);
2419 vec_pop(parser->correct_variables);
2420 vec_pop(parser->correct_variables_score);
2421 if (!vec_size(parser->_blocklocals)) {
2422 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2426 locals = vec_last(parser->_blocklocals);
2427 vec_pop(parser->_blocklocals);
2428 while (vec_size(parser->_locals) != locals) {
2429 ast_expression *e = vec_last(parser->_locals);
2430 ast_value *v = (ast_value*)e;
2431 vec_pop(parser->_locals);
2432 if (ast_istype(e, ast_value) && !v->uses) {
2433 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2438 typedefs = vec_last(parser->_blocktypedefs);
2439 while (vec_size(parser->_typedefs) != typedefs) {
2440 ast_delete(vec_last(parser->_typedefs));
2441 vec_pop(parser->_typedefs);
2443 util_htdel(vec_last(parser->typedefs));
2444 vec_pop(parser->typedefs);
2446 vec_pop(parser->_block_ctx);
2451 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2453 vec_push(parser->_locals, e);
2454 util_htset(vec_last(parser->variables), name, (void*)e);
2458 vec_last(parser->correct_variables),
2459 &vec_last(parser->correct_variables_score),
2464 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2466 vec_push(parser->globals, e);
2467 util_htset(parser->htglobals, name, e);
2471 parser->correct_variables[0],
2472 &parser->correct_variables_score[0],
2477 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2481 ast_expression *prev;
2483 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2485 ast_type_to_string(cond, ty, sizeof(ty));
2486 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2489 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2492 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2495 parseerror(parser, "internal error: failed to process condition");
2500 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2502 /* vector types need to be cast to true booleans */
2503 ast_binary *bin = (ast_binary*)cond;
2504 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2506 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2508 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2511 parseerror(parser, "internal error: failed to process condition");
2518 unary = (ast_unary*)cond;
2519 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2521 cond = unary->operand;
2522 unary->operand = NULL;
2525 unary = (ast_unary*)cond;
2529 parseerror(parser, "internal error: failed to process condition");
2531 if (ifnot) *_ifnot = !*_ifnot;
2535 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2538 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2541 lex_ctx ctx = parser_ctx(parser);
2543 (void)block; /* not touching */
2545 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2546 if (!parser_next(parser)) {
2547 parseerror(parser, "expected condition or 'not'");
2550 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2552 if (!parser_next(parser)) {
2553 parseerror(parser, "expected condition in parenthesis");
2557 if (parser->tok != '(') {
2558 parseerror(parser, "expected 'if' condition in parenthesis");
2561 /* parse into the expression */
2562 if (!parser_next(parser)) {
2563 parseerror(parser, "expected 'if' condition after opening paren");
2566 /* parse the condition */
2567 cond = parse_expression_leave(parser, false, true, false);
2571 if (parser->tok != ')') {
2572 parseerror(parser, "expected closing paren after 'if' condition");
2576 /* parse into the 'then' branch */
2577 if (!parser_next(parser)) {
2578 parseerror(parser, "expected statement for on-true branch of 'if'");
2582 if (!parse_statement_or_block(parser, &ontrue)) {
2587 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2588 /* check for an else */
2589 if (!strcmp(parser_tokval(parser), "else")) {
2590 /* parse into the 'else' branch */
2591 if (!parser_next(parser)) {
2592 parseerror(parser, "expected on-false branch after 'else'");
2597 if (!parse_statement_or_block(parser, &onfalse)) {
2604 cond = process_condition(parser, cond, &ifnot);
2606 if (ontrue) ast_delete(ontrue);
2607 if (onfalse) ast_delete(onfalse);
2612 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2614 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2615 *out = (ast_expression*)ifthen;
2619 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2620 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2625 /* skip the 'while' and get the body */
2626 if (!parser_next(parser)) {
2627 if (OPTS_FLAG(LOOP_LABELS))
2628 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2630 parseerror(parser, "expected 'while' condition in parenthesis");
2634 if (parser->tok == ':') {
2635 if (!OPTS_FLAG(LOOP_LABELS))
2636 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2637 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2638 parseerror(parser, "expected loop label");
2641 label = util_strdup(parser_tokval(parser));
2642 if (!parser_next(parser)) {
2644 parseerror(parser, "expected 'while' condition in parenthesis");
2649 if (parser->tok != '(') {
2650 parseerror(parser, "expected 'while' condition in parenthesis");
2654 vec_push(parser->breaks, label);
2655 vec_push(parser->continues, label);
2657 rv = parse_while_go(parser, block, out);
2660 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2661 parseerror(parser, "internal error: label stack corrupted");
2667 vec_pop(parser->breaks);
2668 vec_pop(parser->continues);
2673 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2676 ast_expression *cond, *ontrue;
2680 lex_ctx ctx = parser_ctx(parser);
2682 (void)block; /* not touching */
2684 /* parse into the expression */
2685 if (!parser_next(parser)) {
2686 parseerror(parser, "expected 'while' condition after opening paren");
2689 /* parse the condition */
2690 cond = parse_expression_leave(parser, false, true, false);
2694 if (parser->tok != ')') {
2695 parseerror(parser, "expected closing paren after 'while' condition");
2699 /* parse into the 'then' branch */
2700 if (!parser_next(parser)) {
2701 parseerror(parser, "expected while-loop body");
2705 if (!parse_statement_or_block(parser, &ontrue)) {
2710 cond = process_condition(parser, cond, &ifnot);
2715 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2716 *out = (ast_expression*)aloop;
2720 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2721 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2726 /* skip the 'do' and get the body */
2727 if (!parser_next(parser)) {
2728 if (OPTS_FLAG(LOOP_LABELS))
2729 parseerror(parser, "expected loop label or body");
2731 parseerror(parser, "expected loop body");
2735 if (parser->tok == ':') {
2736 if (!OPTS_FLAG(LOOP_LABELS))
2737 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2738 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2739 parseerror(parser, "expected loop label");
2742 label = util_strdup(parser_tokval(parser));
2743 if (!parser_next(parser)) {
2745 parseerror(parser, "expected loop body");
2750 vec_push(parser->breaks, label);
2751 vec_push(parser->continues, label);
2753 rv = parse_dowhile_go(parser, block, out);
2756 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2757 parseerror(parser, "internal error: label stack corrupted");
2763 vec_pop(parser->breaks);
2764 vec_pop(parser->continues);
2769 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2772 ast_expression *cond, *ontrue;
2776 lex_ctx ctx = parser_ctx(parser);
2778 (void)block; /* not touching */
2780 if (!parse_statement_or_block(parser, &ontrue))
2783 /* expect the "while" */
2784 if (parser->tok != TOKEN_KEYWORD ||
2785 strcmp(parser_tokval(parser), "while"))
2787 parseerror(parser, "expected 'while' and condition");
2792 /* skip the 'while' and check for opening paren */
2793 if (!parser_next(parser) || parser->tok != '(') {
2794 parseerror(parser, "expected 'while' condition in parenthesis");
2798 /* parse into the expression */
2799 if (!parser_next(parser)) {
2800 parseerror(parser, "expected 'while' condition after opening paren");
2804 /* parse the condition */
2805 cond = parse_expression_leave(parser, false, true, false);
2809 if (parser->tok != ')') {
2810 parseerror(parser, "expected closing paren after 'while' condition");
2816 if (!parser_next(parser) || parser->tok != ';') {
2817 parseerror(parser, "expected semicolon after condition");
2823 if (!parser_next(parser)) {
2824 parseerror(parser, "parse error");
2830 cond = process_condition(parser, cond, &ifnot);
2835 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2836 *out = (ast_expression*)aloop;
2840 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2841 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2846 /* skip the 'for' and check for opening paren */
2847 if (!parser_next(parser)) {
2848 if (OPTS_FLAG(LOOP_LABELS))
2849 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2851 parseerror(parser, "expected 'for' expressions in parenthesis");
2855 if (parser->tok == ':') {
2856 if (!OPTS_FLAG(LOOP_LABELS))
2857 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2858 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2859 parseerror(parser, "expected loop label");
2862 label = util_strdup(parser_tokval(parser));
2863 if (!parser_next(parser)) {
2865 parseerror(parser, "expected 'for' expressions in parenthesis");
2870 if (parser->tok != '(') {
2871 parseerror(parser, "expected 'for' expressions in parenthesis");
2875 vec_push(parser->breaks, label);
2876 vec_push(parser->continues, label);
2878 rv = parse_for_go(parser, block, out);
2881 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2882 parseerror(parser, "internal error: label stack corrupted");
2888 vec_pop(parser->breaks);
2889 vec_pop(parser->continues);
2893 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2896 ast_expression *initexpr, *cond, *increment, *ontrue;
2901 lex_ctx ctx = parser_ctx(parser);
2903 parser_enterblock(parser);
2910 /* parse into the expression */
2911 if (!parser_next(parser)) {
2912 parseerror(parser, "expected 'for' initializer after opening paren");
2917 if (parser->tok == TOKEN_IDENT)
2918 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2920 if (typevar || parser->tok == TOKEN_TYPENAME) {
2922 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2923 if (parsewarning(parser, WARN_EXTENSIONS,
2924 "current standard does not allow variable declarations in for-loop initializers"))
2928 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2931 else if (parser->tok != ';')
2933 initexpr = parse_expression_leave(parser, false, false, false);
2938 /* move on to condition */
2939 if (parser->tok != ';') {
2940 parseerror(parser, "expected semicolon after for-loop initializer");
2943 if (!parser_next(parser)) {
2944 parseerror(parser, "expected for-loop condition");
2948 /* parse the condition */
2949 if (parser->tok != ';') {
2950 cond = parse_expression_leave(parser, false, true, false);
2955 /* move on to incrementor */
2956 if (parser->tok != ';') {
2957 parseerror(parser, "expected semicolon after for-loop initializer");
2960 if (!parser_next(parser)) {
2961 parseerror(parser, "expected for-loop condition");
2965 /* parse the incrementor */
2966 if (parser->tok != ')') {
2967 lex_ctx condctx = parser_ctx(parser);
2968 increment = parse_expression_leave(parser, false, false, false);
2971 if (!ast_side_effects(increment)) {
2972 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2978 if (parser->tok != ')') {
2979 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2982 /* parse into the 'then' branch */
2983 if (!parser_next(parser)) {
2984 parseerror(parser, "expected for-loop body");
2987 if (!parse_statement_or_block(parser, &ontrue))
2991 cond = process_condition(parser, cond, &ifnot);
2995 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2996 *out = (ast_expression*)aloop;
2998 if (!parser_leaveblock(parser)) {
3004 if (initexpr) ast_unref(initexpr);
3005 if (cond) ast_unref(cond);
3006 if (increment) ast_unref(increment);
3007 (void)!parser_leaveblock(parser);
3011 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
3013 ast_expression *exp = NULL;
3014 ast_expression *var = NULL;
3015 ast_return *ret = NULL;
3016 ast_value *retval = parser->function->return_value;
3017 ast_value *expected = parser->function->vtype;
3019 lex_ctx ctx = parser_ctx(parser);
3021 (void)block; /* not touching */
3023 if (!parser_next(parser)) {
3024 parseerror(parser, "expected return expression");
3028 /* return assignments */
3029 if (parser->tok == '=') {
3030 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
3031 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
3035 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
3037 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
3038 parseerror(parser, "invalid return type: `%s'", ty1);
3042 if (!parser_next(parser)) {
3043 parseerror(parser, "expected return assignment expression");
3047 if (!(exp = parse_expression_leave(parser, false, false, false)))
3050 /* prepare the return value */
3052 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
3053 ast_type_adopt(retval, expected->expression.next);
3054 parser->function->return_value = retval;
3057 if (!ast_compare_type(exp, (ast_expression*)retval)) {
3058 char ty1[1024], ty2[1024];
3059 ast_type_to_string(exp, ty1, sizeof(ty1));
3060 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
3061 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
3064 /* store to 'return' local variable */
3065 var = (ast_expression*)ast_store_new(
3067 type_store_instr[expected->expression.next->vtype],
3068 (ast_expression*)retval, exp);
3075 if (parser->tok != ';')
3076 parseerror(parser, "missing semicolon after return assignment");
3077 else if (!parser_next(parser))
3078 parseerror(parser, "parse error after return assignment");
3084 if (parser->tok != ';') {
3085 exp = parse_expression(parser, false, false);
3089 if (exp->vtype != TYPE_NIL &&
3090 exp->vtype != ((ast_expression*)expected)->next->vtype)
3092 parseerror(parser, "return with invalid expression");
3095 ret = ast_return_new(ctx, exp);
3101 if (!parser_next(parser))
3102 parseerror(parser, "parse error");
3104 if (!retval && expected->expression.next->vtype != TYPE_VOID)
3106 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
3108 ret = ast_return_new(ctx, (ast_expression*)retval);
3110 *out = (ast_expression*)ret;
3114 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
3117 unsigned int levels = 0;
3118 lex_ctx ctx = parser_ctx(parser);
3119 const char **loops = (is_continue ? parser->continues : parser->breaks);
3121 (void)block; /* not touching */
3122 if (!parser_next(parser)) {
3123 parseerror(parser, "expected semicolon or loop label");
3127 if (!vec_size(loops)) {
3129 parseerror(parser, "`continue` can only be used inside loops");
3131 parseerror(parser, "`break` can only be used inside loops or switches");
3134 if (parser->tok == TOKEN_IDENT) {
3135 if (!OPTS_FLAG(LOOP_LABELS))
3136 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3137 i = vec_size(loops);
3139 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
3142 parseerror(parser, "no such loop to %s: `%s`",
3143 (is_continue ? "continue" : "break out of"),
3144 parser_tokval(parser));
3149 if (!parser_next(parser)) {
3150 parseerror(parser, "expected semicolon");
3155 if (parser->tok != ';') {
3156 parseerror(parser, "expected semicolon");
3160 if (!parser_next(parser))
3161 parseerror(parser, "parse error");
3163 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
3167 /* returns true when it was a variable qualifier, false otherwise!
3168 * on error, cvq is set to CV_WRONG
3170 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
3172 bool had_const = false;
3173 bool had_var = false;
3174 bool had_noref = false;
3175 bool had_attrib = false;
3176 bool had_static = false;
3181 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
3183 /* parse an attribute */
3184 if (!parser_next(parser)) {
3185 parseerror(parser, "expected attribute after `[[`");
3189 if (!strcmp(parser_tokval(parser), "noreturn")) {
3190 flags |= AST_FLAG_NORETURN;
3191 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3192 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
3197 else if (!strcmp(parser_tokval(parser), "noref")) {
3199 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3200 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
3205 else if (!strcmp(parser_tokval(parser), "inline")) {
3206 flags |= AST_FLAG_INLINE;
3207 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3208 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
3213 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
3214 flags |= AST_FLAG_ALIAS;
3217 if (!parser_next(parser)) {
3218 parseerror(parser, "parse error in attribute");
3222 if (parser->tok == '(') {
3223 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
3224 parseerror(parser, "`alias` attribute missing parameter");
3228 *message = util_strdup(parser_tokval(parser));
3230 if (!parser_next(parser)) {
3231 parseerror(parser, "parse error in attribute");
3235 if (parser->tok != ')') {
3236 parseerror(parser, "`alias` attribute expected `)` after parameter");
3240 if (!parser_next(parser)) {
3241 parseerror(parser, "parse error in attribute");
3246 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3247 parseerror(parser, "`alias` attribute expected `]]`");
3251 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
3252 flags |= AST_FLAG_DEPRECATED;
3255 if (!parser_next(parser)) {
3256 parseerror(parser, "parse error in attribute");
3260 if (parser->tok == '(') {
3261 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
3262 parseerror(parser, "`deprecated` attribute missing parameter");
3266 *message = util_strdup(parser_tokval(parser));
3268 if (!parser_next(parser)) {
3269 parseerror(parser, "parse error in attribute");
3273 if(parser->tok != ')') {
3274 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
3278 if (!parser_next(parser)) {
3279 parseerror(parser, "parse error in attribute");
3284 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3285 parseerror(parser, "`deprecated` attribute expected `]]`");
3288 if (*message) mem_d(*message);
3296 /* Skip tokens until we hit a ]] */
3297 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
3298 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3299 if (!parser_next(parser)) {
3300 parseerror(parser, "error inside attribute");
3307 else if (with_local && !strcmp(parser_tokval(parser), "static"))
3309 else if (!strcmp(parser_tokval(parser), "const"))
3311 else if (!strcmp(parser_tokval(parser), "var"))
3313 else if (with_local && !strcmp(parser_tokval(parser), "local"))
3315 else if (!strcmp(parser_tokval(parser), "noref"))
3317 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
3322 if (!parser_next(parser))
3332 *is_static = had_static;
3336 parseerror(parser, "parse error after variable qualifier");
3341 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
3342 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
3347 /* skip the 'while' and get the body */
3348 if (!parser_next(parser)) {
3349 if (OPTS_FLAG(LOOP_LABELS))
3350 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
3352 parseerror(parser, "expected 'switch' operand in parenthesis");
3356 if (parser->tok == ':') {
3357 if (!OPTS_FLAG(LOOP_LABELS))
3358 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3359 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3360 parseerror(parser, "expected loop label");
3363 label = util_strdup(parser_tokval(parser));
3364 if (!parser_next(parser)) {
3366 parseerror(parser, "expected 'switch' operand in parenthesis");
3371 if (parser->tok != '(') {
3372 parseerror(parser, "expected 'switch' operand in parenthesis");
3376 vec_push(parser->breaks, label);
3378 rv = parse_switch_go(parser, block, out);
3381 if (vec_last(parser->breaks) != label) {
3382 parseerror(parser, "internal error: label stack corrupted");
3388 vec_pop(parser->breaks);
3393 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3395 ast_expression *operand;
3398 ast_switch *switchnode;
3399 ast_switch_case swcase;
3402 bool noref, is_static;
3403 uint32_t qflags = 0;
3405 lex_ctx ctx = parser_ctx(parser);
3407 (void)block; /* not touching */
3410 /* parse into the expression */
3411 if (!parser_next(parser)) {
3412 parseerror(parser, "expected switch operand");
3415 /* parse the operand */
3416 operand = parse_expression_leave(parser, false, false, false);
3420 switchnode = ast_switch_new(ctx, operand);
3423 if (parser->tok != ')') {
3424 ast_delete(switchnode);
3425 parseerror(parser, "expected closing paren after 'switch' operand");
3429 /* parse over the opening paren */
3430 if (!parser_next(parser) || parser->tok != '{') {
3431 ast_delete(switchnode);
3432 parseerror(parser, "expected list of cases");
3436 if (!parser_next(parser)) {
3437 ast_delete(switchnode);
3438 parseerror(parser, "expected 'case' or 'default'");
3442 /* new block; allow some variables to be declared here */
3443 parser_enterblock(parser);
3446 if (parser->tok == TOKEN_IDENT)
3447 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3448 if (typevar || parser->tok == TOKEN_TYPENAME) {
3449 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3450 ast_delete(switchnode);
3455 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3457 if (cvq == CV_WRONG) {
3458 ast_delete(switchnode);
3461 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3462 ast_delete(switchnode);
3471 while (parser->tok != '}') {
3472 ast_block *caseblock;
3474 if (!strcmp(parser_tokval(parser), "case")) {
3475 if (!parser_next(parser)) {
3476 ast_delete(switchnode);
3477 parseerror(parser, "expected expression for case");
3480 swcase.value = parse_expression_leave(parser, false, false, false);
3481 if (!swcase.value) {
3482 ast_delete(switchnode);
3483 parseerror(parser, "expected expression for case");
3486 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3487 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3488 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3494 else if (!strcmp(parser_tokval(parser), "default")) {
3495 swcase.value = NULL;
3496 if (!parser_next(parser)) {
3497 ast_delete(switchnode);
3498 parseerror(parser, "expected colon");
3503 ast_delete(switchnode);
3504 parseerror(parser, "expected 'case' or 'default'");
3508 /* Now the colon and body */
3509 if (parser->tok != ':') {
3510 if (swcase.value) ast_unref(swcase.value);
3511 ast_delete(switchnode);
3512 parseerror(parser, "expected colon");
3516 if (!parser_next(parser)) {
3517 if (swcase.value) ast_unref(swcase.value);
3518 ast_delete(switchnode);
3519 parseerror(parser, "expected statements or case");
3522 caseblock = ast_block_new(parser_ctx(parser));
3524 if (swcase.value) ast_unref(swcase.value);
3525 ast_delete(switchnode);
3528 swcase.code = (ast_expression*)caseblock;
3529 vec_push(switchnode->cases, swcase);
3531 ast_expression *expr;
3532 if (parser->tok == '}')
3534 if (parser->tok == TOKEN_KEYWORD) {
3535 if (!strcmp(parser_tokval(parser), "case") ||
3536 !strcmp(parser_tokval(parser), "default"))
3541 if (!parse_statement(parser, caseblock, &expr, true)) {
3542 ast_delete(switchnode);
3547 if (!ast_block_add_expr(caseblock, expr)) {
3548 ast_delete(switchnode);
3554 parser_leaveblock(parser);
3557 if (parser->tok != '}') {
3558 ast_delete(switchnode);
3559 parseerror(parser, "expected closing paren of case list");
3562 if (!parser_next(parser)) {
3563 ast_delete(switchnode);
3564 parseerror(parser, "parse error after switch");
3567 *out = (ast_expression*)switchnode;
3571 /* parse computed goto sides */
3572 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3573 ast_expression *on_true;
3574 ast_expression *on_false;
3575 ast_expression *cond;
3580 if (ast_istype(*side, ast_ternary)) {
3581 ast_ternary *tern = (ast_ternary*)*side;
3582 on_true = parse_goto_computed(parser, &tern->on_true);
3583 on_false = parse_goto_computed(parser, &tern->on_false);
3585 if (!on_true || !on_false) {
3586 parseerror(parser, "expected label or expression in ternary");
3587 if (on_true) ast_unref(on_true);
3588 if (on_false) ast_unref(on_false);
3596 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3597 } else if (ast_istype(*side, ast_label)) {
3598 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3599 ast_goto_set_label(gt, ((ast_label*)*side));
3601 return (ast_expression*)gt;
3606 static bool parse_goto(parser_t *parser, ast_expression **out)
3608 ast_goto *gt = NULL;
3609 ast_expression *lbl;
3611 if (!parser_next(parser))
3614 if (parser->tok != TOKEN_IDENT) {
3615 ast_expression *expression;
3617 /* could be an expression i.e computed goto :-) */
3618 if (parser->tok != '(') {
3619 parseerror(parser, "expected label name after `goto`");
3623 /* failed to parse expression for goto */
3624 if (!(expression = parse_expression(parser, false, true)) ||
3625 !(*out = parse_goto_computed(parser, &expression))) {
3626 parseerror(parser, "invalid goto expression");
3627 ast_unref(expression);
3634 /* not computed goto */
3635 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3636 lbl = parser_find_label(parser, gt->name);
3638 if (!ast_istype(lbl, ast_label)) {
3639 parseerror(parser, "internal error: label is not an ast_label");
3643 ast_goto_set_label(gt, (ast_label*)lbl);
3646 vec_push(parser->gotos, gt);
3648 if (!parser_next(parser) || parser->tok != ';') {
3649 parseerror(parser, "semicolon expected after goto label");
3652 if (!parser_next(parser)) {
3653 parseerror(parser, "parse error after goto");
3657 *out = (ast_expression*)gt;
3661 static bool parse_skipwhite(parser_t *parser)
3664 if (!parser_next(parser))
3666 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3667 return parser->tok < TOKEN_ERROR;
3670 static bool parse_eol(parser_t *parser)
3672 if (!parse_skipwhite(parser))
3674 return parser->tok == TOKEN_EOL;
3677 static bool parse_pragma_do(parser_t *parser)
3679 if (!parser_next(parser) ||
3680 parser->tok != TOKEN_IDENT ||
3681 strcmp(parser_tokval(parser), "pragma"))
3683 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3686 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3687 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3691 if (!strcmp(parser_tokval(parser), "noref")) {
3692 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3693 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3696 parser->noref = !!parser_token(parser)->constval.i;
3697 if (!parse_eol(parser)) {
3698 parseerror(parser, "parse error after `noref` pragma");
3704 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3711 static bool parse_pragma(parser_t *parser)
3714 parser->lex->flags.preprocessing = true;
3715 parser->lex->flags.mergelines = true;
3716 rv = parse_pragma_do(parser);
3717 if (parser->tok != TOKEN_EOL) {
3718 parseerror(parser, "junk after pragma");
3721 parser->lex->flags.preprocessing = false;
3722 parser->lex->flags.mergelines = false;
3723 if (!parser_next(parser)) {
3724 parseerror(parser, "parse error after pragma");
3730 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3732 bool noref, is_static;
3734 uint32_t qflags = 0;
3735 ast_value *typevar = NULL;
3736 char *vstring = NULL;
3740 if (parser->tok == TOKEN_IDENT)
3741 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3743 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3745 /* local variable */
3747 parseerror(parser, "cannot declare a variable from here");
3750 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3751 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3754 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3758 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3760 if (cvq == CV_WRONG)
3762 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3764 else if (parser->tok == TOKEN_KEYWORD)
3766 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3771 if (!parser_next(parser)) {
3772 parseerror(parser, "parse error after __builtin_debug_printtype");
3776 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3778 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3779 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3780 if (!parser_next(parser)) {
3781 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3787 if (!parse_statement(parser, block, out, allow_cases))
3790 con_out("__builtin_debug_printtype: got no output node\n");
3793 ast_type_to_string(*out, ty, sizeof(ty));
3794 con_out("__builtin_debug_printtype: `%s`\n", ty);
3799 else if (!strcmp(parser_tokval(parser), "return"))
3801 return parse_return(parser, block, out);
3803 else if (!strcmp(parser_tokval(parser), "if"))
3805 return parse_if(parser, block, out);
3807 else if (!strcmp(parser_tokval(parser), "while"))
3809 return parse_while(parser, block, out);
3811 else if (!strcmp(parser_tokval(parser), "do"))
3813 return parse_dowhile(parser, block, out);
3815 else if (!strcmp(parser_tokval(parser), "for"))
3817 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3818 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3821 return parse_for(parser, block, out);
3823 else if (!strcmp(parser_tokval(parser), "break"))
3825 return parse_break_continue(parser, block, out, false);
3827 else if (!strcmp(parser_tokval(parser), "continue"))
3829 return parse_break_continue(parser, block, out, true);
3831 else if (!strcmp(parser_tokval(parser), "switch"))
3833 return parse_switch(parser, block, out);
3835 else if (!strcmp(parser_tokval(parser), "case") ||
3836 !strcmp(parser_tokval(parser), "default"))
3839 parseerror(parser, "unexpected 'case' label");
3844 else if (!strcmp(parser_tokval(parser), "goto"))
3846 return parse_goto(parser, out);
3848 else if (!strcmp(parser_tokval(parser), "typedef"))
3850 if (!parser_next(parser)) {
3851 parseerror(parser, "expected type definition after 'typedef'");
3854 return parse_typedef(parser);
3856 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3859 else if (parser->tok == '{')
3862 inner = parse_block(parser);
3865 *out = (ast_expression*)inner;
3868 else if (parser->tok == ':')
3872 if (!parser_next(parser)) {
3873 parseerror(parser, "expected label name");
3876 if (parser->tok != TOKEN_IDENT) {
3877 parseerror(parser, "label must be an identifier");
3880 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3882 if (!label->undefined) {
3883 parseerror(parser, "label `%s` already defined", label->name);
3886 label->undefined = false;
3889 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3890 vec_push(parser->labels, label);
3892 *out = (ast_expression*)label;
3893 if (!parser_next(parser)) {
3894 parseerror(parser, "parse error after label");
3897 for (i = 0; i < vec_size(parser->gotos); ++i) {
3898 if (!strcmp(parser->gotos[i]->name, label->name)) {
3899 ast_goto_set_label(parser->gotos[i], label);
3900 vec_remove(parser->gotos, i, 1);
3906 else if (parser->tok == ';')
3908 if (!parser_next(parser)) {
3909 parseerror(parser, "parse error after empty statement");
3916 lex_ctx ctx = parser_ctx(parser);
3917 ast_expression *exp = parse_expression(parser, false, false);
3921 if (!ast_side_effects(exp)) {
3922 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3929 static bool parse_enum(parser_t *parser)
3932 bool reverse = false;
3934 ast_value **values = NULL;
3935 ast_value *var = NULL;
3938 ast_expression *old;
3940 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3941 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3945 /* enumeration attributes (can add more later) */
3946 if (parser->tok == ':') {
3947 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3948 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3953 if (!strcmp(parser_tokval(parser), "flag")) {
3957 else if (!strcmp(parser_tokval(parser), "reverse")) {
3961 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3965 if (!parser_next(parser) || parser->tok != '{') {
3966 parseerror(parser, "expected `{` after enum attribute ");
3972 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3973 if (parser->tok == '}') {
3974 /* allow an empty enum */
3977 parseerror(parser, "expected identifier or `}`");
3981 old = parser_find_field(parser, parser_tokval(parser));
3983 old = parser_find_global(parser, parser_tokval(parser));
3985 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3986 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3990 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3991 vec_push(values, var);
3992 var->cvq = CV_CONST;
3993 var->hasvalue = true;
3995 /* for flagged enumerations increment in POTs of TWO */
3996 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3997 parser_addglobal(parser, var->name, (ast_expression*)var);
3999 if (!parser_next(parser)) {
4000 parseerror(parser, "expected `=`, `}` or comma after identifier");
4004 if (parser->tok == ',')
4006 if (parser->tok == '}')
4008 if (parser->tok != '=') {
4009 parseerror(parser, "expected `=`, `}` or comma after identifier");
4013 if (!parser_next(parser)) {
4014 parseerror(parser, "expected expression after `=`");
4018 /* We got a value! */
4019 old = parse_expression_leave(parser, true, false, false);
4020 asvalue = (ast_value*)old;
4021 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
4022 compile_error(ast_ctx(var), "constant value or expression expected");
4025 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
4027 if (parser->tok == '}')
4029 if (parser->tok != ',') {
4030 parseerror(parser, "expected `}` or comma after expression");
4035 /* patch them all (for reversed attribute) */
4038 for (i = 0; i < vec_size(values); i++)
4039 values[i]->constval.vfloat = vec_size(values) - i - 1;
4042 if (parser->tok != '}') {
4043 parseerror(parser, "internal error: breaking without `}`");
4047 if (!parser_next(parser) || parser->tok != ';') {
4048 parseerror(parser, "expected semicolon after enumeration");
4052 if (!parser_next(parser)) {
4053 parseerror(parser, "parse error after enumeration");
4065 static bool parse_block_into(parser_t *parser, ast_block *block)
4069 parser_enterblock(parser);
4071 if (!parser_next(parser)) { /* skip the '{' */
4072 parseerror(parser, "expected function body");
4076 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4078 ast_expression *expr = NULL;
4079 if (parser->tok == '}')
4082 if (!parse_statement(parser, block, &expr, false)) {
4083 /* parseerror(parser, "parse error"); */
4089 if (!ast_block_add_expr(block, expr)) {
4096 if (parser->tok != '}') {
4099 (void)parser_next(parser);
4103 if (!parser_leaveblock(parser))
4105 return retval && !!block;
4108 static ast_block* parse_block(parser_t *parser)
4111 block = ast_block_new(parser_ctx(parser));
4114 if (!parse_block_into(parser, block)) {
4115 ast_block_delete(block);
4121 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
4123 if (parser->tok == '{') {
4124 *out = (ast_expression*)parse_block(parser);
4127 return parse_statement(parser, NULL, out, false);
4130 static bool create_vector_members(ast_value *var, ast_member **me)
4133 size_t len = strlen(var->name);
4135 for (i = 0; i < 3; ++i) {
4136 char *name = (char*)mem_a(len+3);
4137 memcpy(name, var->name, len);
4139 name[len+1] = 'x'+i;
4141 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
4150 do { ast_member_delete(me[--i]); } while(i);
4154 static bool parse_function_body(parser_t *parser, ast_value *var)
4156 ast_block *block = NULL;
4161 ast_expression *framenum = NULL;
4162 ast_expression *nextthink = NULL;
4163 /* None of the following have to be deleted */
4164 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
4165 ast_expression *gbl_time = NULL, *gbl_self = NULL;
4166 bool has_frame_think;
4170 has_frame_think = false;
4171 old = parser->function;
4173 if (var->expression.flags & AST_FLAG_ALIAS) {
4174 parseerror(parser, "function aliases cannot have bodies");
4178 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
4179 parseerror(parser, "gotos/labels leaking");
4183 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4184 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
4185 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
4191 if (parser->tok == '[') {
4192 /* got a frame definition: [ framenum, nextthink ]
4193 * this translates to:
4194 * self.frame = framenum;
4195 * self.nextthink = time + 0.1;
4196 * self.think = nextthink;
4200 fld_think = parser_find_field(parser, "think");
4201 fld_nextthink = parser_find_field(parser, "nextthink");
4202 fld_frame = parser_find_field(parser, "frame");
4203 if (!fld_think || !fld_nextthink || !fld_frame) {
4204 parseerror(parser, "cannot use [frame,think] notation without the required fields");
4205 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
4208 gbl_time = parser_find_global(parser, "time");
4209 gbl_self = parser_find_global(parser, "self");
4210 if (!gbl_time || !gbl_self) {
4211 parseerror(parser, "cannot use [frame,think] notation without the required globals");
4212 parseerror(parser, "please declare the following globals: `time`, `self`");
4216 if (!parser_next(parser))
4219 framenum = parse_expression_leave(parser, true, false, false);
4221 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
4224 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
4225 ast_unref(framenum);
4226 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
4230 if (parser->tok != ',') {
4231 ast_unref(framenum);
4232 parseerror(parser, "expected comma after frame number in [frame,think] notation");
4233 parseerror(parser, "Got a %i\n", parser->tok);
4237 if (!parser_next(parser)) {
4238 ast_unref(framenum);
4242 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
4244 /* qc allows the use of not-yet-declared functions here
4245 * - this automatically creates a prototype */
4246 ast_value *thinkfunc;
4247 ast_expression *functype = fld_think->next;
4249 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
4250 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
4251 ast_unref(framenum);
4252 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
4255 ast_type_adopt(thinkfunc, functype);
4257 if (!parser_next(parser)) {
4258 ast_unref(framenum);
4259 ast_delete(thinkfunc);
4263 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
4265 nextthink = (ast_expression*)thinkfunc;
4268 nextthink = parse_expression_leave(parser, true, false, false);
4270 ast_unref(framenum);
4271 parseerror(parser, "expected a think-function in [frame,think] notation");
4276 if (!ast_istype(nextthink, ast_value)) {
4277 parseerror(parser, "think-function in [frame,think] notation must be a constant");
4281 if (retval && parser->tok != ']') {
4282 parseerror(parser, "expected closing `]` for [frame,think] notation");
4286 if (retval && !parser_next(parser)) {
4290 if (retval && parser->tok != '{') {
4291 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
4296 ast_unref(nextthink);
4297 ast_unref(framenum);
4301 has_frame_think = true;
4304 block = ast_block_new(parser_ctx(parser));
4306 parseerror(parser, "failed to allocate block");
4307 if (has_frame_think) {
4308 ast_unref(nextthink);
4309 ast_unref(framenum);
4314 if (has_frame_think) {
4316 ast_expression *self_frame;
4317 ast_expression *self_nextthink;
4318 ast_expression *self_think;
4319 ast_expression *time_plus_1;
4320 ast_store *store_frame;
4321 ast_store *store_nextthink;
4322 ast_store *store_think;
4324 ctx = parser_ctx(parser);
4325 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
4326 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
4327 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
4329 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
4330 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
4332 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
4333 if (self_frame) ast_delete(self_frame);
4334 if (self_nextthink) ast_delete(self_nextthink);
4335 if (self_think) ast_delete(self_think);
4336 if (time_plus_1) ast_delete(time_plus_1);
4342 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
4343 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
4344 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
4347 ast_delete(self_frame);
4350 if (!store_nextthink) {
4351 ast_delete(self_nextthink);
4355 ast_delete(self_think);
4359 if (store_frame) ast_delete(store_frame);
4360 if (store_nextthink) ast_delete(store_nextthink);
4361 if (store_think) ast_delete(store_think);
4364 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
4365 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
4366 !ast_block_add_expr(block, (ast_expression*)store_think))
4373 parseerror(parser, "failed to generate code for [frame,think]");
4374 ast_unref(nextthink);
4375 ast_unref(framenum);
4381 if (var->hasvalue) {
4382 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
4383 ast_block_delete(block);
4387 func = ast_function_new(ast_ctx(var), var->name, var);
4389 parseerror(parser, "failed to allocate function for `%s`", var->name);
4390 ast_block_delete(block);
4393 vec_push(parser->functions, func);
4395 parser_enterblock(parser);
4397 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
4399 ast_value *param = var->expression.params[parami];
4402 if (param->expression.vtype != TYPE_VECTOR &&
4403 (param->expression.vtype != TYPE_FIELD ||
4404 param->expression.next->vtype != TYPE_VECTOR))
4409 if (!create_vector_members(param, me)) {
4410 ast_block_delete(block);
4414 for (e = 0; e < 3; ++e) {
4415 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4416 ast_block_collect(block, (ast_expression*)me[e]);
4420 if (var->argcounter) {
4421 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4422 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4426 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4428 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4429 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4430 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4431 varargs->expression.count = 0;
4432 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4433 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4434 ast_delete(varargs);
4435 ast_block_delete(block);
4438 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4439 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4440 ast_delete(varargs);
4441 ast_block_delete(block);
4444 func->varargs = varargs;
4446 func->fixedparams = parser_const_float(parser, vec_size(var->expression.params));
4449 parser->function = func;
4450 if (!parse_block_into(parser, block)) {
4451 ast_block_delete(block);
4455 vec_push(func->blocks, block);
4458 parser->function = old;
4459 if (!parser_leaveblock(parser))
4461 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4462 parseerror(parser, "internal error: local scopes left");
4466 if (parser->tok == ';')
4467 return parser_next(parser);
4468 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4469 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4473 (void)!parser_leaveblock(parser);
4474 vec_pop(parser->functions);
4475 ast_function_delete(func);
4476 var->constval.vfunc = NULL;
4479 parser->function = old;
4483 static ast_expression *array_accessor_split(
4488 ast_expression *left,
4489 ast_expression *right
4495 lex_ctx ctx = ast_ctx(array);
4497 if (!left || !right) {
4498 if (left) ast_delete(left);
4499 if (right) ast_delete(right);
4503 cmp = ast_binary_new(ctx, INSTR_LT,
4504 (ast_expression*)index,
4505 (ast_expression*)parser_const_float(parser, middle));
4509 parseerror(parser, "internal error: failed to create comparison for array setter");
4513 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4515 ast_delete(cmp); /* will delete left and right */
4516 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4520 return (ast_expression*)ifthen;
4523 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4525 lex_ctx ctx = ast_ctx(array);
4527 if (from+1 == afterend) {
4528 /* set this value */
4531 ast_array_index *subscript;
4533 int assignop = type_store_instr[value->expression.vtype];
4535 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4536 assignop = INSTR_STORE_V;
4538 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4542 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4544 ast_delete(subscript);
4548 block = ast_block_new(ctx);
4554 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4559 ret = ast_return_new(ctx, NULL);
4565 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4570 return (ast_expression*)block;
4572 ast_expression *left, *right;
4573 size_t diff = afterend - from;
4574 size_t middle = from + diff/2;
4575 left = array_setter_node(parser, array, index, value, from, middle);
4576 right = array_setter_node(parser, array, index, value, middle, afterend);
4577 return array_accessor_split(parser, array, index, middle, left, right);
4581 static ast_expression *array_field_setter_node(
4590 lex_ctx ctx = ast_ctx(array);
4592 if (from+1 == afterend) {
4593 /* set this value */
4596 ast_entfield *entfield;
4597 ast_array_index *subscript;
4599 int assignop = type_storep_instr[value->expression.vtype];
4601 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4602 assignop = INSTR_STOREP_V;
4604 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4608 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4609 subscript->expression.vtype = TYPE_FIELD;
4611 entfield = ast_entfield_new_force(ctx,
4612 (ast_expression*)entity,
4613 (ast_expression*)subscript,
4614 (ast_expression*)subscript);
4616 ast_delete(subscript);
4620 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4622 ast_delete(entfield);
4626 block = ast_block_new(ctx);
4632 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4637 ret = ast_return_new(ctx, NULL);
4643 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4648 return (ast_expression*)block;
4650 ast_expression *left, *right;
4651 size_t diff = afterend - from;
4652 size_t middle = from + diff/2;
4653 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4654 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4655 return array_accessor_split(parser, array, index, middle, left, right);
4659 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4661 lex_ctx ctx = ast_ctx(array);
4663 if (from+1 == afterend) {
4665 ast_array_index *subscript;
4667 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4671 ret = ast_return_new(ctx, (ast_expression*)subscript);
4673 ast_delete(subscript);
4677 return (ast_expression*)ret;
4679 ast_expression *left, *right;
4680 size_t diff = afterend - from;
4681 size_t middle = from + diff/2;
4682 left = array_getter_node(parser, array, index, from, middle);
4683 right = array_getter_node(parser, array, index, middle, afterend);
4684 return array_accessor_split(parser, array, index, middle, left, right);
4688 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4690 ast_function *func = NULL;
4691 ast_value *fval = NULL;
4692 ast_block *body = NULL;
4694 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4696 parseerror(parser, "failed to create accessor function value");
4700 func = ast_function_new(ast_ctx(array), funcname, fval);
4703 parseerror(parser, "failed to create accessor function node");
4707 body = ast_block_new(ast_ctx(array));
4709 parseerror(parser, "failed to create block for array accessor");
4715 vec_push(func->blocks, body);
4718 vec_push(parser->accessors, fval);
4723 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4725 ast_value *index = NULL;
4726 ast_value *value = NULL;
4730 if (!ast_istype(array->expression.next, ast_value)) {
4731 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4735 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4737 func = fval->constval.vfunc;
4738 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4740 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4741 value = ast_value_copy((ast_value*)array->expression.next);
4743 if (!index || !value) {
4744 parseerror(parser, "failed to create locals for array accessor");
4747 (void)!ast_value_set_name(value, "value"); /* not important */
4748 vec_push(fval->expression.params, index);
4749 vec_push(fval->expression.params, value);
4751 array->setter = fval;
4754 if (index) ast_delete(index);
4755 if (value) ast_delete(value);
4761 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4763 ast_expression *root = NULL;
4764 root = array_setter_node(parser, array,
4765 array->setter->expression.params[0],
4766 array->setter->expression.params[1],
4767 0, array->expression.count);
4769 parseerror(parser, "failed to build accessor search tree");
4772 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4779 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4781 if (!parser_create_array_setter_proto(parser, array, funcname))
4783 return parser_create_array_setter_impl(parser, array);
4786 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4788 ast_expression *root = NULL;
4789 ast_value *entity = NULL;
4790 ast_value *index = NULL;
4791 ast_value *value = NULL;
4795 if (!ast_istype(array->expression.next, ast_value)) {
4796 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4800 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4802 func = fval->constval.vfunc;
4803 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4805 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4806 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4807 value = ast_value_copy((ast_value*)array->expression.next);
4808 if (!entity || !index || !value) {
4809 parseerror(parser, "failed to create locals for array accessor");
4812 (void)!ast_value_set_name(value, "value"); /* not important */
4813 vec_push(fval->expression.params, entity);
4814 vec_push(fval->expression.params, index);
4815 vec_push(fval->expression.params, value);
4817 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4819 parseerror(parser, "failed to build accessor search tree");
4823 array->setter = fval;
4824 return ast_block_add_expr(func->blocks[0], root);
4826 if (entity) ast_delete(entity);
4827 if (index) ast_delete(index);
4828 if (value) ast_delete(value);
4829 if (root) ast_delete(root);
4835 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4837 ast_value *index = NULL;
4841 /* NOTE: checking array->expression.next rather than elemtype since
4842 * for fields elemtype is a temporary fieldtype.
4844 if (!ast_istype(array->expression.next, ast_value)) {
4845 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4849 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4851 func = fval->constval.vfunc;
4852 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4854 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4857 parseerror(parser, "failed to create locals for array accessor");
4860 vec_push(fval->expression.params, index);
4862 array->getter = fval;
4865 if (index) ast_delete(index);
4871 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4873 ast_expression *root = NULL;
4875 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4877 parseerror(parser, "failed to build accessor search tree");
4880 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4887 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4889 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4891 return parser_create_array_getter_impl(parser, array);
4894 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4895 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4903 bool variadic = false;
4904 ast_value *varparam = NULL;
4905 char *argcounter = NULL;
4907 ctx = parser_ctx(parser);
4909 /* for the sake of less code we parse-in in this function */
4910 if (!parser_next(parser)) {
4912 parseerror(parser, "expected parameter list");
4918 /* parse variables until we hit a closing paren */
4919 while (parser->tok != ')') {
4921 /* there must be commas between them */
4922 if (parser->tok != ',') {
4923 parseerror(parser, "expected comma or end of parameter list");
4926 if (!parser_next(parser)) {
4927 parseerror(parser, "expected parameter");
4933 if (parser->tok == TOKEN_DOTS) {
4934 /* '...' indicates a varargs function */
4936 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4937 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4940 if (parser->tok == TOKEN_IDENT) {
4941 argcounter = util_strdup(parser_tokval(parser));
4942 if (!parser_next(parser) || parser->tok != ')') {
4943 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4950 /* for anything else just parse a typename */
4951 param = parse_typename(parser, NULL, NULL);
4954 vec_push(params, param);
4955 if (param->expression.vtype >= TYPE_VARIANT) {
4956 char tname[1024]; /* typename is reserved in C++ */
4957 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4958 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4961 /* type-restricted varargs */
4962 if (parser->tok == TOKEN_DOTS) {
4964 varparam = vec_last(params);
4966 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4967 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4970 if (parser->tok == TOKEN_IDENT) {
4971 argcounter = util_strdup(parser_tokval(parser));
4972 if (!parser_next(parser) || parser->tok != ')') {
4973 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4981 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4985 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4986 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4989 if (!parser_next(parser)) {
4990 parseerror(parser, "parse error after typename");
4994 /* now turn 'var' into a function type */
4995 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4996 fval->expression.next = (ast_expression*)var;
4998 fval->expression.flags |= AST_FLAG_VARIADIC;
5001 var->expression.params = params;
5002 var->expression.varparam = (ast_expression*)varparam;
5003 var->argcounter = argcounter;
5012 ast_delete(varparam);
5014 for (i = 0; i < vec_size(params); ++i)
5015 ast_delete(params[i]);
5020 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
5022 ast_expression *cexp;
5023 ast_value *cval, *tmp;
5026 ctx = parser_ctx(parser);
5028 if (!parser_next(parser)) {
5030 parseerror(parser, "expected array-size");
5034 if (parser->tok != ']') {
5035 cexp = parse_expression_leave(parser, true, false, false);
5037 if (!cexp || !ast_istype(cexp, ast_value)) {
5041 parseerror(parser, "expected array-size as constant positive integer");
5044 cval = (ast_value*)cexp;
5051 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
5052 tmp->expression.next = (ast_expression*)var;
5056 if (cval->expression.vtype == TYPE_INTEGER)
5057 tmp->expression.count = cval->constval.vint;
5058 else if (cval->expression.vtype == TYPE_FLOAT)
5059 tmp->expression.count = cval->constval.vfloat;
5063 parseerror(parser, "array-size must be a positive integer constant");
5069 var->expression.count = -1;
5070 var->expression.flags |= AST_FLAG_ARRAY_INIT;
5073 if (parser->tok != ']') {
5075 parseerror(parser, "expected ']' after array-size");
5078 if (!parser_next(parser)) {
5080 parseerror(parser, "error after parsing array size");
5086 /* Parse a complete typename.
5087 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
5088 * but when parsing variables separated by comma
5089 * 'storebase' should point to where the base-type should be kept.
5090 * The base type makes up every bit of type information which comes *before* the
5093 * The following will be parsed in its entirety:
5095 * The 'basetype' in this case is 'void()'
5096 * and if there's a comma after it, say:
5098 * then the type-information 'void()' can be stored in 'storebase'
5100 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
5102 ast_value *var, *tmp;
5105 const char *name = NULL;
5106 bool isfield = false;
5107 bool wasarray = false;
5108 size_t morefields = 0;
5110 ctx = parser_ctx(parser);
5112 /* types may start with a dot */
5113 if (parser->tok == '.') {
5115 /* if we parsed a dot we need a typename now */
5116 if (!parser_next(parser)) {
5117 parseerror(parser, "expected typename for field definition");
5121 /* Further dots are handled seperately because they won't be part of the
5124 while (parser->tok == '.') {
5126 if (!parser_next(parser)) {
5127 parseerror(parser, "expected typename for field definition");
5132 if (parser->tok == TOKEN_IDENT)
5133 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
5134 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
5135 parseerror(parser, "expected typename");
5139 /* generate the basic type value */
5140 if (cached_typedef) {
5141 var = ast_value_copy(cached_typedef);
5142 ast_value_set_name(var, "<type(from_def)>");
5144 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
5146 for (; morefields; --morefields) {
5147 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
5148 tmp->expression.next = (ast_expression*)var;
5152 /* do not yet turn into a field - remember:
5153 * .void() foo; is a field too
5154 * .void()() foo; is a function
5158 if (!parser_next(parser)) {
5160 parseerror(parser, "parse error after typename");
5164 /* an opening paren now starts the parameter-list of a function
5165 * this is where original-QC has parameter lists.
5166 * We allow a single parameter list here.
5167 * Much like fteqcc we don't allow `float()() x`
5169 if (parser->tok == '(') {
5170 var = parse_parameter_list(parser, var);
5175 /* store the base if requested */
5177 *storebase = ast_value_copy(var);
5179 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5180 tmp->expression.next = (ast_expression*)*storebase;
5185 /* there may be a name now */
5186 if (parser->tok == TOKEN_IDENT) {
5187 name = util_strdup(parser_tokval(parser));
5189 if (!parser_next(parser)) {
5192 parseerror(parser, "error after variable or field declaration");
5197 /* now this may be an array */
5198 if (parser->tok == '[') {
5200 var = parse_arraysize(parser, var);
5202 if (name) mem_d(name);
5207 /* This is the point where we can turn it into a field */
5209 /* turn it into a field if desired */
5210 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5211 tmp->expression.next = (ast_expression*)var;
5215 /* now there may be function parens again */
5216 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5217 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5218 if (parser->tok == '(' && wasarray)
5219 parseerror(parser, "arrays as part of a return type is not supported");
5220 while (parser->tok == '(') {
5221 var = parse_parameter_list(parser, var);
5223 if (name) mem_d(name);
5228 /* finally name it */
5230 if (!ast_value_set_name(var, name)) {
5233 parseerror(parser, "internal error: failed to set name");
5236 /* free the name, ast_value_set_name duplicates */
5243 static bool parse_typedef(parser_t *parser)
5245 ast_value *typevar, *oldtype;
5246 ast_expression *old;
5248 typevar = parse_typename(parser, NULL, NULL);
5253 if ( (old = parser_find_var(parser, typevar->name)) ) {
5254 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
5255 " -> `%s` has been declared here: %s:%i",
5256 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
5257 ast_delete(typevar);
5261 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
5262 parseerror(parser, "type `%s` has already been declared here: %s:%i",
5263 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
5264 ast_delete(typevar);
5268 vec_push(parser->_typedefs, typevar);
5269 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
5271 if (parser->tok != ';') {
5272 parseerror(parser, "expected semicolon after typedef");
5275 if (!parser_next(parser)) {
5276 parseerror(parser, "parse error after typedef");
5283 static const char *cvq_to_str(int cvq) {
5285 case CV_NONE: return "none";
5286 case CV_VAR: return "`var`";
5287 case CV_CONST: return "`const`";
5288 default: return "<INVALID>";
5292 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
5295 if (proto->cvq != var->cvq) {
5296 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
5297 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5298 parser->tok == '='))
5300 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
5301 "`%s` declared with different qualifiers: %s\n"
5302 " -> previous declaration here: %s:%i uses %s",
5303 var->name, cvq_to_str(var->cvq),
5304 ast_ctx(proto).file, ast_ctx(proto).line,
5305 cvq_to_str(proto->cvq));
5308 av = (var ->expression.flags & AST_FLAG_NORETURN);
5309 ao = (proto->expression.flags & AST_FLAG_NORETURN);
5311 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
5312 "`%s` declared with different attributes%s\n"
5313 " -> previous declaration here: %s:%i",
5314 var->name, (av ? ": noreturn" : ""),
5315 ast_ctx(proto).file, ast_ctx(proto).line,
5316 (ao ? ": noreturn" : ""));
5321 static bool create_array_accessors(parser_t *parser, ast_value *var)
5324 util_snprintf(name, sizeof(name), "%s##SET", var->name);
5325 if (!parser_create_array_setter(parser, var, name))
5327 util_snprintf(name, sizeof(name), "%s##GET", var->name);
5328 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5333 static bool parse_array(parser_t *parser, ast_value *array)
5336 if (array->initlist) {
5337 parseerror(parser, "array already initialized elsewhere");
5340 if (!parser_next(parser)) {
5341 parseerror(parser, "parse error in array initializer");
5345 while (parser->tok != '}') {
5346 ast_value *v = (ast_value*)parse_expression_leave(parser, true, false, false);
5349 if (!ast_istype(v, ast_value) || !v->hasvalue || v->cvq != CV_CONST) {
5351 parseerror(parser, "initializing element must be a compile time constant");
5354 vec_push(array->initlist, v->constval);
5355 if (v->expression.vtype == TYPE_STRING) {
5356 array->initlist[i].vstring = util_strdupe(array->initlist[i].vstring);
5360 if (parser->tok == '}')
5362 if (parser->tok != ',' || !parser_next(parser)) {
5363 parseerror(parser, "expected comma or '}' in element list");
5367 if (!parser_next(parser) || parser->tok != ';') {
5368 parseerror(parser, "expected semicolon after initializer, got %s");
5372 if (!parser_next(parser)) {
5373 parseerror(parser, "parse error after initializer");
5378 if (array->expression.flags & AST_FLAG_ARRAY_INIT) {
5379 if (array->expression.count != (size_t)-1) {
5380 parseerror(parser, "array `%s' has already been initialized with %u elements",
5381 array->name, (unsigned)array->expression.count);
5383 array->expression.count = vec_size(array->initlist);
5384 if (!create_array_accessors(parser, array))
5390 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)
5394 ast_expression *old;
5398 ast_value *basetype = NULL;
5400 bool isparam = false;
5401 bool isvector = false;
5402 bool cleanvar = true;
5403 bool wasarray = false;
5405 ast_member *me[3] = { NULL, NULL, NULL };
5407 if (!localblock && is_static)
5408 parseerror(parser, "`static` qualifier is not supported in global scope");
5410 /* get the first complete variable */
5411 var = parse_typename(parser, &basetype, cached_typedef);
5414 ast_delete(basetype);
5422 /* Part 0: finish the type */
5423 if (parser->tok == '(') {
5424 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5425 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5426 var = parse_parameter_list(parser, var);
5432 /* we only allow 1-dimensional arrays */
5433 if (parser->tok == '[') {
5435 var = parse_arraysize(parser, var);
5441 if (parser->tok == '(' && wasarray) {
5442 parseerror(parser, "arrays as part of a return type is not supported");
5443 /* we'll still parse the type completely for now */
5445 /* for functions returning functions */
5446 while (parser->tok == '(') {
5447 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5448 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5449 var = parse_parameter_list(parser, var);
5456 var->cvq = qualifier;
5457 var->expression.flags |= qflags;
5460 * store the vstring back to var for alias and
5461 * deprecation messages.
5463 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5464 var->expression.flags & AST_FLAG_ALIAS)
5465 var->desc = vstring;
5468 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5469 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5470 * is then filled with the previous definition and the parameter-names replaced.
5472 if (!strcmp(var->name, "nil")) {
5473 if (OPTS_FLAG(UNTYPED_NIL)) {
5474 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5475 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5477 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5480 /* Deal with end_sys_ vars */
5482 if (!strcmp(var->name, "end_sys_globals")) {
5484 parser->crc_globals = vec_size(parser->globals);
5487 else if (!strcmp(var->name, "end_sys_fields")) {
5489 parser->crc_fields = vec_size(parser->fields);
5492 if (was_end && var->expression.vtype == TYPE_FIELD) {
5493 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5494 "global '%s' hint should not be a field",
5495 parser_tokval(parser)))
5502 if (!nofields && var->expression.vtype == TYPE_FIELD)
5504 /* deal with field declarations */
5505 old = parser_find_field(parser, var->name);
5507 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5508 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5517 parseerror(parser, "field `%s` already declared here: %s:%i",
5518 var->name, ast_ctx(old).file, ast_ctx(old).line);
5523 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5524 (old = parser_find_global(parser, var->name)))
5526 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5527 parseerror(parser, "field `%s` already declared here: %s:%i",
5528 var->name, ast_ctx(old).file, ast_ctx(old).line);
5535 /* deal with other globals */
5536 old = parser_find_global(parser, var->name);
5537 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5539 /* This is a function which had a prototype */
5540 if (!ast_istype(old, ast_value)) {
5541 parseerror(parser, "internal error: prototype is not an ast_value");
5545 proto = (ast_value*)old;
5546 proto->desc = var->desc;
5547 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5548 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5550 ast_ctx(proto).file, ast_ctx(proto).line);
5554 /* we need the new parameter-names */
5555 for (i = 0; i < vec_size(proto->expression.params); ++i)
5556 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5557 if (!parser_check_qualifiers(parser, var, proto)) {
5564 proto->expression.flags |= var->expression.flags;
5572 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5573 "global `%s` already declared here: %s:%i",
5574 var->name, ast_ctx(old).file, ast_ctx(old).line))
5579 proto = (ast_value*)old;
5580 if (!ast_istype(old, ast_value)) {
5581 parseerror(parser, "internal error: not an ast_value");
5586 if (!parser_check_qualifiers(parser, var, proto)) {
5591 proto->expression.flags |= var->expression.flags;
5595 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5596 (old = parser_find_field(parser, var->name)))
5598 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5599 parseerror(parser, "global `%s` already declared here: %s:%i",
5600 var->name, ast_ctx(old).file, ast_ctx(old).line);
5607 else /* it's not a global */
5609 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5610 if (old && !isparam) {
5611 parseerror(parser, "local `%s` already declared here: %s:%i",
5612 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5616 old = parser_find_local(parser, var->name, 0, &isparam);
5617 if (old && isparam) {
5618 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5619 "local `%s` is shadowing a parameter", var->name))
5621 parseerror(parser, "local `%s` already declared here: %s:%i",
5622 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5626 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5634 /* in a noref section we simply bump the usecount */
5635 if (noref || parser->noref)
5639 * Create the global/local, and deal with vector types.
5642 if (var->expression.vtype == TYPE_VECTOR)
5644 else if (var->expression.vtype == TYPE_FIELD &&
5645 var->expression.next->vtype == TYPE_VECTOR)
5649 if (!create_vector_members(var, me)) {
5656 /* deal with global variables, fields, functions */
5657 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5658 var->isfield = true;
5659 vec_push(parser->fields, (ast_expression*)var);
5660 util_htset(parser->htfields, var->name, var);
5662 for (i = 0; i < 3; ++i) {
5663 vec_push(parser->fields, (ast_expression*)me[i]);
5664 util_htset(parser->htfields, me[i]->name, me[i]);
5669 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5670 parser_addglobal(parser, var->name, (ast_expression*)var);
5672 for (i = 0; i < 3; ++i) {
5673 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5677 ast_expression *find = parser_find_global(parser, var->desc);
5680 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5684 if (var->expression.vtype != find->vtype) {
5688 ast_type_to_string(find, ty1, sizeof(ty1));
5689 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5691 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5698 * add alias to aliases table and to corrector
5699 * so corrections can apply for aliases as well.
5701 util_htset(parser->aliases, var->name, find);
5704 * add to corrector so corrections can work
5705 * even for aliases too.
5708 vec_last(parser->correct_variables),
5709 &vec_last(parser->correct_variables_score),
5713 /* generate aliases for vector components */
5717 util_asprintf(&buffer[0], "%s_x", var->desc);
5718 util_asprintf(&buffer[1], "%s_y", var->desc);
5719 util_asprintf(&buffer[2], "%s_z", var->desc);
5721 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5722 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5723 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5730 * add to corrector so corrections can work
5731 * even for aliases too.
5734 vec_last(parser->correct_variables),
5735 &vec_last(parser->correct_variables_score),
5739 vec_last(parser->correct_variables),
5740 &vec_last(parser->correct_variables_score),
5744 vec_last(parser->correct_variables),
5745 &vec_last(parser->correct_variables_score),
5753 /* a static adds itself to be generated like any other global
5754 * but is added to the local namespace instead
5756 char *defname = NULL;
5757 size_t prefix_len, ln;
5759 ln = strlen(parser->function->name);
5760 vec_append(defname, ln, parser->function->name);
5762 vec_append(defname, 2, "::");
5763 /* remember the length up to here */
5764 prefix_len = vec_size(defname);
5766 /* Add it to the local scope */
5767 util_htset(vec_last(parser->variables), var->name, (void*)var);
5771 vec_last(parser->correct_variables),
5772 &vec_last(parser->correct_variables_score),
5776 /* now rename the global */
5777 ln = strlen(var->name);
5778 vec_append(defname, ln, var->name);
5779 ast_value_set_name(var, defname);
5781 /* push it to the to-be-generated globals */
5782 vec_push(parser->globals, (ast_expression*)var);
5784 /* same game for the vector members */
5786 for (i = 0; i < 3; ++i) {
5787 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5791 vec_last(parser->correct_variables),
5792 &vec_last(parser->correct_variables_score),
5796 vec_shrinkto(defname, prefix_len);
5797 ln = strlen(me[i]->name);
5798 vec_append(defname, ln, me[i]->name);
5799 ast_member_set_name(me[i], defname);
5801 vec_push(parser->globals, (ast_expression*)me[i]);
5806 vec_push(localblock->locals, var);
5807 parser_addlocal(parser, var->name, (ast_expression*)var);
5809 for (i = 0; i < 3; ++i) {
5810 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5811 ast_block_collect(localblock, (ast_expression*)me[i]);
5817 me[0] = me[1] = me[2] = NULL;
5822 if (var->expression.vtype == TYPE_ARRAY) {
5823 if (var->expression.count != (size_t)-1) {
5824 if (!create_array_accessors(parser, var))
5828 else if (!localblock && !nofields &&
5829 var->expression.vtype == TYPE_FIELD &&
5830 var->expression.next->vtype == TYPE_ARRAY)
5833 ast_expression *telem;
5835 ast_value *array = (ast_value*)var->expression.next;
5837 if (!ast_istype(var->expression.next, ast_value)) {
5838 parseerror(parser, "internal error: field element type must be an ast_value");
5842 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5843 if (!parser_create_array_field_setter(parser, array, name))
5846 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5847 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5848 tfield->expression.next = telem;
5849 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5850 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5858 if (parser->tok == ';') {
5859 ast_delete(basetype);
5860 if (!parser_next(parser)) {
5861 parseerror(parser, "error after variable declaration");
5867 if (parser->tok == ',')
5871 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5874 parseerror(parser, "missing comma or semicolon while parsing variables");
5878 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5879 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5880 "initializing expression turns variable `%s` into a constant in this standard",
5887 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5888 if (parser->tok != '=') {
5889 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5893 if (!parser_next(parser)) {
5894 parseerror(parser, "error parsing initializer");
5898 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5899 parseerror(parser, "expected '=' before function body in this standard");
5902 if (parser->tok == '#') {
5903 ast_function *func = NULL;
5904 ast_value *number = NULL;
5910 parseerror(parser, "cannot declare builtins within functions");
5913 if (var->expression.vtype != TYPE_FUNCTION) {
5914 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5917 if (!parser_next(parser)) {
5918 parseerror(parser, "expected builtin number");
5922 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5923 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5925 parseerror(parser, "builtin number expected");
5928 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5931 parseerror(parser, "builtin number must be a compile time constant");
5934 if (number->expression.vtype == TYPE_INTEGER)
5935 builtin_num = number->constval.vint;
5936 else if (number->expression.vtype == TYPE_FLOAT)
5937 builtin_num = number->constval.vfloat;
5940 parseerror(parser, "builtin number must be an integer constant");
5945 fractional = modff(builtin_num, &integral);
5946 if (builtin_num < 0 || fractional != 0) {
5947 parseerror(parser, "builtin number must be an integer greater than zero");
5951 /* we only want the integral part anyways */
5952 builtin_num = integral;
5953 } else if (parser->tok == TOKEN_INTCONST) {
5954 builtin_num = parser_token(parser)->constval.i;
5956 parseerror(parser, "builtin number must be a compile time constant");
5960 if (var->hasvalue) {
5961 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5962 "builtin `%s` has already been defined\n"
5963 " -> previous declaration here: %s:%i",
5964 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5968 func = ast_function_new(ast_ctx(var), var->name, var);
5970 parseerror(parser, "failed to allocate function for `%s`", var->name);
5973 vec_push(parser->functions, func);
5975 func->builtin = -builtin_num-1;
5978 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5979 ? (parser->tok != ',' && parser->tok != ';')
5980 : (!parser_next(parser)))
5982 parseerror(parser, "expected comma or semicolon");
5984 ast_function_delete(func);
5985 var->constval.vfunc = NULL;
5989 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
5992 /* Note that fteqcc and most others don't even *have*
5993 * local arrays, so this is not a high priority.
5995 parseerror(parser, "TODO: initializers for local arrays");
5999 var->hasvalue = true;
6000 if (!parse_array(parser, var))
6003 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
6006 parseerror(parser, "cannot declare functions within functions");
6011 ast_ctx(proto) = parser_ctx(parser);
6013 if (!parse_function_body(parser, var))
6015 ast_delete(basetype);
6016 for (i = 0; i < vec_size(parser->gotos); ++i)
6017 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
6018 vec_free(parser->gotos);
6019 vec_free(parser->labels);
6022 ast_expression *cexp;
6025 cexp = parse_expression_leave(parser, true, false, false);
6030 cval = (ast_value*)cexp;
6031 if (cval != parser->nil &&
6032 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
6035 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
6039 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
6040 qualifier != CV_VAR)
6042 var->cvq = CV_CONST;
6044 if (cval == parser->nil)
6045 var->expression.flags |= AST_FLAG_INITIALIZED;
6048 var->hasvalue = true;
6049 if (cval->expression.vtype == TYPE_STRING)
6050 var->constval.vstring = parser_strdup(cval->constval.vstring);
6051 else if (cval->expression.vtype == TYPE_FIELD)
6052 var->constval.vfield = cval;
6054 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
6060 shunt sy = { NULL, NULL, NULL, NULL };
6063 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
6064 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
6065 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
6066 if (!parser_sy_apply_operator(parser, &sy))
6069 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
6070 parseerror(parser, "internal error: leaked operands");
6071 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
6082 if (parser->tok == ',') {
6083 if (!parser_next(parser)) {
6084 parseerror(parser, "expected another variable");
6088 if (parser->tok != TOKEN_IDENT) {
6089 parseerror(parser, "expected another variable");
6092 var = ast_value_copy(basetype);
6094 ast_value_set_name(var, parser_tokval(parser));
6095 if (!parser_next(parser)) {
6096 parseerror(parser, "error parsing variable declaration");
6102 if (parser->tok != ';') {
6103 parseerror(parser, "missing semicolon after variables");
6107 if (!parser_next(parser)) {
6108 parseerror(parser, "parse error after variable declaration");
6112 ast_delete(basetype);
6116 if (cleanvar && var)
6118 ast_delete(basetype);
6122 ast_delete(basetype);
6123 if (cleanvar && var)
6125 if (me[0]) ast_member_delete(me[0]);
6126 if (me[1]) ast_member_delete(me[1]);
6127 if (me[2]) ast_member_delete(me[2]);
6131 static bool parser_global_statement(parser_t *parser)
6135 bool is_static = false;
6136 uint32_t qflags = 0;
6137 ast_value *istype = NULL;
6138 char *vstring = NULL;
6140 if (parser->tok == TOKEN_IDENT)
6141 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
6143 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
6145 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
6147 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
6149 if (cvq == CV_WRONG)
6151 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
6153 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
6155 return parse_enum(parser);
6157 else if (parser->tok == TOKEN_KEYWORD)
6159 if (!strcmp(parser_tokval(parser), "typedef")) {
6160 if (!parser_next(parser)) {
6161 parseerror(parser, "expected type definition after 'typedef'");
6164 return parse_typedef(parser);
6166 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
6169 else if (parser->tok == '#')
6171 return parse_pragma(parser);
6173 else if (parser->tok == '$')
6175 if (!parser_next(parser)) {
6176 parseerror(parser, "parse error");
6182 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
6188 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
6190 return util_crc16(old, str, strlen(str));
6193 static void progdefs_crc_file(const char *str)
6195 /* write to progdefs.h here */
6199 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
6201 old = progdefs_crc_sum(old, str);
6202 progdefs_crc_file(str);
6206 static void generate_checksum(parser_t *parser)
6208 uint16_t crc = 0xFFFF;
6212 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
6213 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
6215 progdefs_crc_file("\tint\tpad;\n");
6216 progdefs_crc_file("\tint\tofs_return[3];\n");
6217 progdefs_crc_file("\tint\tofs_parm0[3];\n");
6218 progdefs_crc_file("\tint\tofs_parm1[3];\n");
6219 progdefs_crc_file("\tint\tofs_parm2[3];\n");
6220 progdefs_crc_file("\tint\tofs_parm3[3];\n");
6221 progdefs_crc_file("\tint\tofs_parm4[3];\n");
6222 progdefs_crc_file("\tint\tofs_parm5[3];\n");
6223 progdefs_crc_file("\tint\tofs_parm6[3];\n");
6224 progdefs_crc_file("\tint\tofs_parm7[3];\n");
6226 for (i = 0; i < parser->crc_globals; ++i) {
6227 if (!ast_istype(parser->globals[i], ast_value))
6229 value = (ast_value*)(parser->globals[i]);
6230 switch (value->expression.vtype) {
6231 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6232 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6233 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6234 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6236 crc = progdefs_crc_both(crc, "\tint\t");
6239 crc = progdefs_crc_both(crc, value->name);
6240 crc = progdefs_crc_both(crc, ";\n");
6242 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
6243 for (i = 0; i < parser->crc_fields; ++i) {
6244 if (!ast_istype(parser->fields[i], ast_value))
6246 value = (ast_value*)(parser->fields[i]);
6247 switch (value->expression.next->vtype) {
6248 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6249 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6250 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6251 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6253 crc = progdefs_crc_both(crc, "\tint\t");
6256 crc = progdefs_crc_both(crc, value->name);
6257 crc = progdefs_crc_both(crc, ";\n");
6259 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
6261 parser->code->crc = crc;
6264 parser_t *parser_create()
6270 parser = (parser_t*)mem_a(sizeof(parser_t));
6274 memset(parser, 0, sizeof(*parser));
6276 if (!(parser->code = code_init())) {
6281 for (i = 0; i < operator_count; ++i) {
6282 if (operators[i].id == opid1('=')) {
6283 parser->assign_op = operators+i;
6287 if (!parser->assign_op) {
6288 printf("internal error: initializing parser: failed to find assign operator\n");
6293 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
6294 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
6295 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
6296 vec_push(parser->_blocktypedefs, 0);
6298 parser->aliases = util_htnew(PARSER_HT_SIZE);
6300 parser->ht_imm_string = util_htnew(512);
6303 vec_push(parser->correct_variables, correct_trie_new());
6304 vec_push(parser->correct_variables_score, NULL);
6306 empty_ctx.file = "<internal>";
6308 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
6309 parser->nil->cvq = CV_CONST;
6310 if (OPTS_FLAG(UNTYPED_NIL))
6311 util_htset(parser->htglobals, "nil", (void*)parser->nil);
6313 parser->max_param_count = 1;
6315 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
6316 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
6317 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
6319 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
6320 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
6321 parser->reserved_version->cvq = CV_CONST;
6322 parser->reserved_version->hasvalue = true;
6323 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
6324 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
6326 parser->reserved_version = NULL;
6332 static bool parser_compile(parser_t *parser)
6334 /* initial lexer/parser state */
6335 parser->lex->flags.noops = true;
6337 if (parser_next(parser))
6339 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
6341 if (!parser_global_statement(parser)) {
6342 if (parser->tok == TOKEN_EOF)
6343 parseerror(parser, "unexpected end of file");
6344 else if (compile_errors)
6345 parseerror(parser, "there have been errors, bailing out");
6346 lex_close(parser->lex);
6352 parseerror(parser, "parse error");
6353 lex_close(parser->lex);
6358 lex_close(parser->lex);
6361 return !compile_errors;
6364 bool parser_compile_file(parser_t *parser, const char *filename)
6366 parser->lex = lex_open(filename);
6368 con_err("failed to open file \"%s\"\n", filename);
6371 return parser_compile(parser);
6374 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
6376 parser->lex = lex_open_string(str, len, name);
6378 con_err("failed to create lexer for string \"%s\"\n", name);
6381 return parser_compile(parser);
6384 static void parser_remove_ast(parser_t *parser)
6387 if (parser->ast_cleaned)
6389 parser->ast_cleaned = true;
6390 for (i = 0; i < vec_size(parser->accessors); ++i) {
6391 ast_delete(parser->accessors[i]->constval.vfunc);
6392 parser->accessors[i]->constval.vfunc = NULL;
6393 ast_delete(parser->accessors[i]);
6395 for (i = 0; i < vec_size(parser->functions); ++i) {
6396 ast_delete(parser->functions[i]);
6398 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6399 ast_delete(parser->imm_vector[i]);
6401 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6402 ast_delete(parser->imm_string[i]);
6404 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6405 ast_delete(parser->imm_float[i]);
6407 for (i = 0; i < vec_size(parser->fields); ++i) {
6408 ast_delete(parser->fields[i]);
6410 for (i = 0; i < vec_size(parser->globals); ++i) {
6411 ast_delete(parser->globals[i]);
6413 vec_free(parser->accessors);
6414 vec_free(parser->functions);
6415 vec_free(parser->imm_vector);
6416 vec_free(parser->imm_string);
6417 util_htdel(parser->ht_imm_string);
6418 vec_free(parser->imm_float);
6419 vec_free(parser->globals);
6420 vec_free(parser->fields);
6422 for (i = 0; i < vec_size(parser->variables); ++i)
6423 util_htdel(parser->variables[i]);
6424 vec_free(parser->variables);
6425 vec_free(parser->_blocklocals);
6426 vec_free(parser->_locals);
6429 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
6430 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
6432 vec_free(parser->correct_variables);
6433 vec_free(parser->correct_variables_score);
6435 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6436 ast_delete(parser->_typedefs[i]);
6437 vec_free(parser->_typedefs);
6438 for (i = 0; i < vec_size(parser->typedefs); ++i)
6439 util_htdel(parser->typedefs[i]);
6440 vec_free(parser->typedefs);
6441 vec_free(parser->_blocktypedefs);
6443 vec_free(parser->_block_ctx);
6445 vec_free(parser->labels);
6446 vec_free(parser->gotos);
6447 vec_free(parser->breaks);
6448 vec_free(parser->continues);
6450 ast_value_delete(parser->nil);
6452 ast_value_delete(parser->const_vec[0]);
6453 ast_value_delete(parser->const_vec[1]);
6454 ast_value_delete(parser->const_vec[2]);
6456 if (parser->reserved_version)
6457 ast_value_delete(parser->reserved_version);
6459 util_htdel(parser->aliases);
6460 intrin_intrinsics_destroy(parser);
6463 void parser_cleanup(parser_t *parser)
6465 parser_remove_ast(parser);
6466 code_cleanup(parser->code);
6471 bool parser_finish(parser_t *parser, const char *output)
6477 if (compile_errors) {
6478 con_out("*** there were compile errors\n");
6482 ir = ir_builder_new("gmqcc_out");
6484 con_out("failed to allocate builder\n");
6488 for (i = 0; i < vec_size(parser->fields); ++i) {
6491 if (!ast_istype(parser->fields[i], ast_value))
6493 field = (ast_value*)parser->fields[i];
6494 hasvalue = field->hasvalue;
6495 field->hasvalue = false;
6496 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6497 con_out("failed to generate field %s\n", field->name);
6498 ir_builder_delete(ir);
6503 ast_expression *subtype;
6504 field->hasvalue = true;
6505 subtype = field->expression.next;
6506 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6507 if (subtype->vtype == TYPE_FIELD)
6508 ifld->fieldtype = subtype->next->vtype;
6509 else if (subtype->vtype == TYPE_FUNCTION)
6510 ifld->outtype = subtype->next->vtype;
6511 (void)!ir_value_set_field(field->ir_v, ifld);
6514 for (i = 0; i < vec_size(parser->globals); ++i) {
6516 if (!ast_istype(parser->globals[i], ast_value))
6518 asvalue = (ast_value*)(parser->globals[i]);
6519 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6520 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6521 "unused global: `%s`", asvalue->name);
6523 if (!ast_global_codegen(asvalue, ir, false)) {
6524 con_out("failed to generate global %s\n", asvalue->name);
6525 ir_builder_delete(ir);
6529 /* Build function vararg accessor ast tree now before generating
6530 * immediates, because the accessors may add new immediates
6532 for (i = 0; i < vec_size(parser->functions); ++i) {
6533 ast_function *f = parser->functions[i];
6535 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6536 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6537 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6538 con_out("failed to generate vararg setter for %s\n", f->name);
6539 ir_builder_delete(ir);
6542 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6543 con_out("failed to generate vararg getter for %s\n", f->name);
6544 ir_builder_delete(ir);
6548 ast_delete(f->varargs);
6553 /* Now we can generate immediates */
6554 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6555 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
6556 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
6557 ir_builder_delete(ir);
6561 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6562 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
6563 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
6564 ir_builder_delete(ir);
6568 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6569 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
6570 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
6571 ir_builder_delete(ir);
6575 for (i = 0; i < vec_size(parser->globals); ++i) {
6577 if (!ast_istype(parser->globals[i], ast_value))
6579 asvalue = (ast_value*)(parser->globals[i]);
6580 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6582 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6583 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6584 "uninitialized constant: `%s`",
6586 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6587 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6588 "uninitialized global: `%s`",
6591 if (!ast_generate_accessors(asvalue, ir)) {
6592 ir_builder_delete(ir);
6596 for (i = 0; i < vec_size(parser->fields); ++i) {
6598 asvalue = (ast_value*)(parser->fields[i]->next);
6600 if (!ast_istype((ast_expression*)asvalue, ast_value))
6602 if (asvalue->expression.vtype != TYPE_ARRAY)
6604 if (!ast_generate_accessors(asvalue, ir)) {
6605 ir_builder_delete(ir);
6609 if (parser->reserved_version &&
6610 !ast_global_codegen(parser->reserved_version, ir, false))
6612 con_out("failed to generate reserved::version");
6613 ir_builder_delete(ir);
6616 for (i = 0; i < vec_size(parser->functions); ++i) {
6617 ast_function *f = parser->functions[i];
6618 if (!ast_function_codegen(f, ir)) {
6619 con_out("failed to generate function %s\n", f->name);
6620 ir_builder_delete(ir);
6625 generate_checksum(parser);
6626 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6627 ir_builder_dump(ir, con_out);
6628 for (i = 0; i < vec_size(parser->functions); ++i) {
6629 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6630 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6631 ir_builder_delete(ir);
6635 parser_remove_ast(parser);
6637 if (compile_Werrors) {
6638 con_out("*** there were warnings treated as errors\n");
6639 compile_show_werrors();
6644 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6645 ir_builder_dump(ir, con_out);
6647 if (!ir_builder_generate(parser->code, ir, output)) {
6648 con_out("*** failed to generate output file\n");
6649 ir_builder_delete(ir);
6653 ir_builder_delete(ir);