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
1120 * The first is a vector: vector is allowed to xor with vector and
1121 * with scalar, branch here for the second operand.
1123 if (exprs[1]->vtype == TYPE_VECTOR) {
1125 * Xor all the values of the vector components against the
1126 * vectors components in question.
1128 if (CanConstFold(exprs[0], exprs[1])) {
1129 out = (ast_expression*)parser_const_vector_f(
1131 (float)(((qcint)(ConstV(0).x)) ^ ((qcint)(ConstV(1).x))),
1132 (float)(((qcint)(ConstV(0).y)) ^ ((qcint)(ConstV(1).y))),
1133 (float)(((qcint)(ConstV(0).z)) ^ ((qcint)(ConstV(1).z)))
1136 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor for vector against vector");
1141 * Xor all the values of the vector components against the
1142 * scalar in question.
1144 if (CanConstFold(exprs[0], exprs[1])) {
1145 out = (ast_expression*)parser_const_vector_f(
1147 (float)(((qcint)(ConstV(0).x)) ^ ((qcint)(ConstF(1)))),
1148 (float)(((qcint)(ConstV(0).y)) ^ ((qcint)(ConstF(1)))),
1149 (float)(((qcint)(ConstV(0).z)) ^ ((qcint)(ConstF(1))))
1152 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor for vector against float");
1160 case opid2('<','<'):
1161 case opid2('>','>'):
1162 if (CanConstFold(exprs[0], exprs[1]) && ! NotSameType(TYPE_FLOAT)) {
1163 if (op->id == opid2('<','<'))
1164 out = (ast_expression*)parser_const_float(parser, (double)((unsigned int)(ConstF(0)) << (unsigned int)(ConstF(1))));
1166 out = (ast_expression*)parser_const_float(parser, (double)((unsigned int)(ConstF(0)) >> (unsigned int)(ConstF(1))));
1169 case opid3('<','<','='):
1170 case opid3('>','>','='):
1171 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
1174 case opid2('|','|'):
1175 generated_op += 1; /* INSTR_OR */
1176 case opid2('&','&'):
1177 generated_op += INSTR_AND;
1178 if (CanConstFold(exprs[0], exprs[1]))
1180 if (OPTS_FLAG(PERL_LOGIC)) {
1181 if (immediate_is_true(ctx, asvalue[0]))
1185 out = (ast_expression*)parser_const_float(parser,
1186 ( (generated_op == INSTR_OR)
1187 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
1188 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
1193 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
1194 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1195 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1196 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
1199 for (i = 0; i < 2; ++i) {
1200 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->vtype == TYPE_VECTOR) {
1201 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
1203 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1205 exprs[i] = out; out = NULL;
1206 if (OPTS_FLAG(PERL_LOGIC)) {
1207 /* here we want to keep the right expressions' type */
1211 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->vtype == TYPE_STRING) {
1212 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
1214 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1216 exprs[i] = out; out = NULL;
1217 if (OPTS_FLAG(PERL_LOGIC)) {
1218 /* here we want to keep the right expressions' type */
1223 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1227 case opid2('?',':'):
1228 if (vec_last(sy->paren) != PAREN_TERNARY2) {
1229 compile_error(ctx, "mismatched parenthesis/ternary");
1233 if (!ast_compare_type(exprs[1], exprs[2])) {
1234 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
1235 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
1236 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
1239 if (CanConstFold1(exprs[0]))
1240 out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
1242 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
1245 case opid2('*', '*'):
1246 if (NotSameType(TYPE_FLOAT)) {
1247 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1248 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1249 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
1255 if (CanConstFold(exprs[0], exprs[1])) {
1256 out = (ast_expression*)parser_const_float(parser, powf(ConstF(0), ConstF(1)));
1258 ast_call *gencall = ast_call_new(parser_ctx(parser), intrin_func(parser, "pow"));
1259 vec_push(gencall->params, exprs[0]);
1260 vec_push(gencall->params, exprs[1]);
1261 out = (ast_expression*)gencall;
1265 case opid3('<','=','>'): /* -1, 0, or 1 */
1266 if (NotSameType(TYPE_FLOAT)) {
1267 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1268 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1269 compile_error(ctx, "invalid types used in comparision: %s and %s",
1275 if (CanConstFold(exprs[0], exprs[1])) {
1276 if (ConstF(0) < ConstF(1))
1277 out = (ast_expression*)parser_const_float_neg1(parser);
1278 else if (ConstF(0) == ConstF(1))
1279 out = (ast_expression*)parser_const_float_0(parser);
1280 else if (ConstF(0) > ConstF(1))
1281 out = (ast_expression*)parser_const_float_1(parser);
1283 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
1285 eq->refs = AST_REF_NONE;
1288 out = (ast_expression*)ast_ternary_new(ctx,
1289 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
1291 (ast_expression*)parser_const_float_neg1(parser),
1294 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
1296 (ast_expression*)parser_const_float_0(parser),
1299 (ast_expression*)parser_const_float_1(parser)
1309 generated_op += 1; /* INSTR_GT */
1311 generated_op += 1; /* INSTR_LT */
1312 case opid2('>', '='):
1313 generated_op += 1; /* INSTR_GE */
1314 case opid2('<', '='):
1315 generated_op += INSTR_LE;
1316 if (NotSameType(TYPE_FLOAT)) {
1317 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1318 type_name[exprs[0]->vtype],
1319 type_name[exprs[1]->vtype]);
1322 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1324 case opid2('!', '='):
1325 if (exprs[0]->vtype != exprs[1]->vtype) {
1326 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1327 type_name[exprs[0]->vtype],
1328 type_name[exprs[1]->vtype]);
1331 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->vtype], exprs[0], exprs[1]);
1333 case opid2('=', '='):
1334 if (exprs[0]->vtype != exprs[1]->vtype) {
1335 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1336 type_name[exprs[0]->vtype],
1337 type_name[exprs[1]->vtype]);
1340 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->vtype], exprs[0], exprs[1]);
1344 if (ast_istype(exprs[0], ast_entfield)) {
1345 ast_expression *field = ((ast_entfield*)exprs[0])->field;
1346 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1347 exprs[0]->vtype == TYPE_FIELD &&
1348 exprs[0]->next->vtype == TYPE_VECTOR)
1350 assignop = type_storep_instr[TYPE_VECTOR];
1353 assignop = type_storep_instr[exprs[0]->vtype];
1354 if (assignop == VINSTR_END || !ast_compare_type(field->next, exprs[1]))
1356 ast_type_to_string(field->next, ty1, sizeof(ty1));
1357 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1358 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1359 field->next->vtype == TYPE_FUNCTION &&
1360 exprs[1]->vtype == TYPE_FUNCTION)
1362 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1363 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1366 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1371 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1372 exprs[0]->vtype == TYPE_FIELD &&
1373 exprs[0]->next->vtype == TYPE_VECTOR)
1375 assignop = type_store_instr[TYPE_VECTOR];
1378 assignop = type_store_instr[exprs[0]->vtype];
1381 if (assignop == VINSTR_END) {
1382 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1383 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1384 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1386 else if (!ast_compare_type(exprs[0], exprs[1]))
1388 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1389 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1390 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1391 exprs[0]->vtype == TYPE_FUNCTION &&
1392 exprs[1]->vtype == TYPE_FUNCTION)
1394 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1395 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1398 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1401 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1402 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1404 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1406 case opid3('+','+','P'):
1407 case opid3('-','-','P'):
1409 if (exprs[0]->vtype != TYPE_FLOAT) {
1410 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1411 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
1414 if (op->id == opid3('+','+','P'))
1415 addop = INSTR_ADD_F;
1417 addop = INSTR_SUB_F;
1418 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1419 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1421 if (ast_istype(exprs[0], ast_entfield)) {
1422 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1424 (ast_expression*)parser_const_float_1(parser));
1426 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1428 (ast_expression*)parser_const_float_1(parser));
1431 case opid3('S','+','+'):
1432 case opid3('S','-','-'):
1434 if (exprs[0]->vtype != TYPE_FLOAT) {
1435 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1436 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
1439 if (op->id == opid3('S','+','+')) {
1440 addop = INSTR_ADD_F;
1441 subop = INSTR_SUB_F;
1443 addop = INSTR_SUB_F;
1444 subop = INSTR_ADD_F;
1446 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1447 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1449 if (ast_istype(exprs[0], ast_entfield)) {
1450 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1452 (ast_expression*)parser_const_float_1(parser));
1454 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1456 (ast_expression*)parser_const_float_1(parser));
1460 out = (ast_expression*)ast_binary_new(ctx, subop,
1462 (ast_expression*)parser_const_float_1(parser));
1464 case opid2('+','='):
1465 case opid2('-','='):
1466 if (exprs[0]->vtype != exprs[1]->vtype ||
1467 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
1469 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1470 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1471 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1475 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1476 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1478 if (ast_istype(exprs[0], ast_entfield))
1479 assignop = type_storep_instr[exprs[0]->vtype];
1481 assignop = type_store_instr[exprs[0]->vtype];
1482 switch (exprs[0]->vtype) {
1484 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1485 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1486 exprs[0], exprs[1]);
1489 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1490 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1491 exprs[0], exprs[1]);
1494 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1495 type_name[exprs[0]->vtype],
1496 type_name[exprs[1]->vtype]);
1500 case opid2('*','='):
1501 case opid2('/','='):
1502 if (exprs[1]->vtype != TYPE_FLOAT ||
1503 !(exprs[0]->vtype == TYPE_FLOAT ||
1504 exprs[0]->vtype == TYPE_VECTOR))
1506 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1507 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1508 compile_error(ctx, "invalid types used in expression: %s and %s",
1512 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1513 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1515 if (ast_istype(exprs[0], ast_entfield))
1516 assignop = type_storep_instr[exprs[0]->vtype];
1518 assignop = type_store_instr[exprs[0]->vtype];
1519 switch (exprs[0]->vtype) {
1521 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1522 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1523 exprs[0], exprs[1]);
1526 if (op->id == opid2('*','=')) {
1527 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1528 exprs[0], exprs[1]);
1530 /* there's no DIV_VF */
1531 if (CanConstFold1(exprs[1])) {
1532 out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
1534 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1535 (ast_expression*)parser_const_float_1(parser),
1539 compile_error(ctx, "internal error: failed to generate division");
1542 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1547 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1548 type_name[exprs[0]->vtype],
1549 type_name[exprs[1]->vtype]);
1553 case opid2('&','='):
1554 case opid2('|','='):
1555 if (NotSameType(TYPE_FLOAT)) {
1556 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1557 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1558 compile_error(ctx, "invalid types used in expression: %s and %s",
1562 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1563 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1565 if (ast_istype(exprs[0], ast_entfield))
1566 assignop = type_storep_instr[exprs[0]->vtype];
1568 assignop = type_store_instr[exprs[0]->vtype];
1569 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1570 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1571 exprs[0], exprs[1]);
1573 case opid3('&','~','='):
1574 /* This is like: a &= ~(b);
1575 * But QC has no bitwise-not, so we implement it as
1578 if (NotSameType(TYPE_FLOAT)) {
1579 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1580 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1581 compile_error(ctx, "invalid types used in expression: %s and %s",
1585 if (ast_istype(exprs[0], ast_entfield))
1586 assignop = type_storep_instr[exprs[0]->vtype];
1588 assignop = type_store_instr[exprs[0]->vtype];
1589 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1592 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1593 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1595 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1596 asbinstore->keep_dest = true;
1597 out = (ast_expression*)asbinstore;
1600 case opid2('~', 'P'):
1601 if (exprs[0]->vtype != TYPE_FLOAT) {
1602 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1603 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1607 if(CanConstFold1(exprs[0]))
1608 out = (ast_expression*)parser_const_float(parser, ~(qcint)ConstF(0));
1610 out = (ast_expression*)
1611 ast_binary_new(ctx, INSTR_SUB_F, (ast_expression*)parser_const_float_neg1(parser), exprs[0]);
1617 compile_error(ctx, "failed to apply operator %s", op->op);
1621 vec_push(sy->out, syexp(ctx, out));
1625 static bool parser_close_call(parser_t *parser, shunt *sy)
1627 /* was a function call */
1628 ast_expression *fun;
1629 ast_value *funval = NULL;
1633 size_t paramcount, i;
1635 fid = vec_last(sy->ops).off;
1636 vec_shrinkby(sy->ops, 1);
1638 /* out[fid] is the function
1639 * everything above is parameters...
1641 if (!vec_size(sy->argc)) {
1642 parseerror(parser, "internal error: no argument counter available");
1646 paramcount = vec_last(sy->argc);
1649 if (vec_size(sy->out) < fid) {
1650 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1651 (unsigned long)vec_size(sy->out),
1653 (unsigned long)paramcount);
1657 fun = sy->out[fid].out;
1659 if (fun == intrinsic_debug_typestring) {
1661 if (fid+2 != vec_size(sy->out) ||
1662 vec_last(sy->out).block)
1664 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1667 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1668 ast_unref(vec_last(sy->out).out);
1669 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1670 (ast_expression*)parser_const_string(parser, ty, false));
1671 vec_shrinkby(sy->out, 1);
1675 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1679 if (fid+1 < vec_size(sy->out))
1682 if (fid+1 + paramcount != vec_size(sy->out)) {
1683 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1684 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1688 for (i = 0; i < paramcount; ++i)
1689 vec_push(call->params, sy->out[fid+1 + i].out);
1690 vec_shrinkby(sy->out, paramcount);
1691 (void)!ast_call_check_types(call, parser->function->vtype->expression.varparam);
1692 if (parser->max_param_count < paramcount)
1693 parser->max_param_count = paramcount;
1695 if (ast_istype(fun, ast_value)) {
1696 funval = (ast_value*)fun;
1697 if ((fun->flags & AST_FLAG_VARIADIC) &&
1698 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1700 call->va_count = (ast_expression*)parser_const_float(parser, (double)paramcount);
1704 /* overwrite fid, the function, with a call */
1705 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1707 if (fun->vtype != TYPE_FUNCTION) {
1708 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1713 parseerror(parser, "could not determine function return type");
1716 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1718 if (fun->flags & AST_FLAG_DEPRECATED) {
1720 return !parsewarning(parser, WARN_DEPRECATED,
1721 "call to function (which is marked deprecated)\n",
1722 "-> it has been declared here: %s:%i",
1723 ast_ctx(fun).file, ast_ctx(fun).line);
1726 return !parsewarning(parser, WARN_DEPRECATED,
1727 "call to `%s` (which is marked deprecated)\n"
1728 "-> `%s` declared here: %s:%i",
1729 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1731 return !parsewarning(parser, WARN_DEPRECATED,
1732 "call to `%s` (deprecated: %s)\n"
1733 "-> `%s` declared here: %s:%i",
1734 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1738 if (vec_size(fun->params) != paramcount &&
1739 !((fun->flags & AST_FLAG_VARIADIC) &&
1740 vec_size(fun->params) < paramcount))
1742 const char *fewmany = (vec_size(fun->params) > paramcount) ? "few" : "many";
1744 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1745 "too %s parameters for call to %s: expected %i, got %i\n"
1746 " -> `%s` has been declared here: %s:%i",
1747 fewmany, fval->name, (int)vec_size(fun->params), (int)paramcount,
1748 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1750 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1751 "too %s parameters for function call: expected %i, got %i\n"
1752 " -> it has been declared here: %s:%i",
1753 fewmany, (int)vec_size(fun->params), (int)paramcount,
1754 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1761 static bool parser_close_paren(parser_t *parser, shunt *sy)
1763 if (!vec_size(sy->ops)) {
1764 parseerror(parser, "unmatched closing paren");
1768 while (vec_size(sy->ops)) {
1769 if (vec_last(sy->ops).isparen) {
1770 if (vec_last(sy->paren) == PAREN_FUNC) {
1772 if (!parser_close_call(parser, sy))
1776 if (vec_last(sy->paren) == PAREN_EXPR) {
1778 if (!vec_size(sy->out)) {
1779 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1780 vec_shrinkby(sy->ops, 1);
1783 vec_shrinkby(sy->ops, 1);
1786 if (vec_last(sy->paren) == PAREN_INDEX) {
1788 /* pop off the parenthesis */
1789 vec_shrinkby(sy->ops, 1);
1790 /* then apply the index operator */
1791 if (!parser_sy_apply_operator(parser, sy))
1795 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1796 vec_last(sy->paren) = PAREN_TERNARY2;
1797 /* pop off the parenthesis */
1798 vec_shrinkby(sy->ops, 1);
1801 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1804 if (!parser_sy_apply_operator(parser, sy))
1810 static void parser_reclassify_token(parser_t *parser)
1813 if (parser->tok >= TOKEN_START)
1815 for (i = 0; i < operator_count; ++i) {
1816 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1817 parser->tok = TOKEN_OPERATOR;
1823 static ast_expression* parse_vararg_do(parser_t *parser)
1825 ast_expression *idx, *out;
1827 ast_value *funtype = parser->function->vtype;
1828 lex_ctx ctx = parser_ctx(parser);
1830 if (!parser->function->varargs) {
1831 parseerror(parser, "function has no variable argument list");
1835 if (!parser_next(parser) || parser->tok != '(') {
1836 parseerror(parser, "expected parameter index and type in parenthesis");
1839 if (!parser_next(parser)) {
1840 parseerror(parser, "error parsing parameter index");
1844 idx = parse_expression_leave(parser, true, false, false);
1848 if (parser->tok != ',') {
1849 if (parser->tok != ')') {
1851 parseerror(parser, "expected comma after parameter index");
1854 /* vararg piping: ...(start) */
1855 out = (ast_expression*)ast_argpipe_new(ctx, idx);
1859 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1861 parseerror(parser, "expected typename for vararg");
1865 typevar = parse_typename(parser, NULL, NULL);
1871 if (parser->tok != ')') {
1873 ast_delete(typevar);
1874 parseerror(parser, "expected closing paren");
1878 if (funtype->expression.varparam &&
1879 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1883 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1884 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1885 compile_error(ast_ctx(typevar),
1886 "function was declared to take varargs of type `%s`, requested type is: %s",
1890 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1891 ast_type_adopt(out, typevar);
1892 ast_delete(typevar);
1896 static ast_expression* parse_vararg(parser_t *parser)
1898 bool old_noops = parser->lex->flags.noops;
1900 ast_expression *out;
1902 parser->lex->flags.noops = true;
1903 out = parse_vararg_do(parser);
1905 parser->lex->flags.noops = old_noops;
1909 /* not to be exposed */
1910 extern bool ftepp_predef_exists(const char *name);
1912 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1914 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1915 parser->tok == TOKEN_IDENT &&
1916 !strcmp(parser_tokval(parser), "_"))
1918 /* a translatable string */
1921 parser->lex->flags.noops = true;
1922 if (!parser_next(parser) || parser->tok != '(') {
1923 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1926 parser->lex->flags.noops = false;
1927 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1928 parseerror(parser, "expected a constant string in translatable-string extension");
1931 val = parser_const_string(parser, parser_tokval(parser), true);
1934 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1936 if (!parser_next(parser) || parser->tok != ')') {
1937 parseerror(parser, "expected closing paren after translatable string");
1942 else if (parser->tok == TOKEN_DOTS)
1945 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1946 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1949 va = parse_vararg(parser);
1952 vec_push(sy->out, syexp(parser_ctx(parser), va));
1955 else if (parser->tok == TOKEN_FLOATCONST) {
1957 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1960 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1963 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1965 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1968 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1971 else if (parser->tok == TOKEN_STRINGCONST) {
1973 val = parser_const_string(parser, parser_tokval(parser), false);
1976 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1979 else if (parser->tok == TOKEN_VECTORCONST) {
1981 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1984 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1987 else if (parser->tok == TOKEN_IDENT)
1989 const char *ctoken = parser_tokval(parser);
1990 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1991 ast_expression *var;
1992 /* a_vector.{x,y,z} */
1993 if (!vec_size(sy->ops) ||
1994 !vec_last(sy->ops).etype ||
1995 operators[vec_last(sy->ops).etype-1].id != opid1('.') ||
1996 (prev >= intrinsic_debug_typestring &&
1997 prev <= intrinsic_debug_typestring))
1999 /* When adding more intrinsics, fix the above condition */
2002 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
2004 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
2006 var = parser_find_var(parser, parser_tokval(parser));
2008 var = parser_find_field(parser, parser_tokval(parser));
2010 if (!var && with_labels) {
2011 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
2013 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
2014 var = (ast_expression*)lbl;
2015 vec_push(parser->labels, lbl);
2018 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
2019 var = (ast_expression*)parser_const_string(parser, parser->function->name, false);
2022 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
2023 var = (ast_expression*)intrinsic_debug_typestring;
2025 /* now we try for the real intrinsic hashtable. If the string
2026 * begins with __builtin, we simply skip past it, otherwise we
2027 * use the identifier as is.
2029 else if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
2030 var = intrin_func(parser, parser_tokval(parser) + 10 /* skip __builtin */);
2034 char *correct = NULL;
2038 * sometimes people use preprocessing predefs without enabling them
2039 * i've done this thousands of times already myself. Lets check for
2040 * it in the predef table. And diagnose it better :)
2042 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
2043 parseerror(parser, "unexpected identifier: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
2048 * TODO: determine the best score for the identifier: be it
2049 * a variable, a field.
2051 * We should also consider adding correction tables for
2052 * other things as well.
2054 if (OPTS_OPTION_BOOL(OPTION_CORRECTION) && strlen(parser_tokval(parser)) <= 16) {
2056 correct_init(&corr);
2058 for (i = 0; i < vec_size(parser->correct_variables); i++) {
2059 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
2060 if (strcmp(correct, parser_tokval(parser))) {
2062 } else if (correct) {
2067 correct_free(&corr);
2070 parseerror(parser, "unexpected identifier: %s (did you mean %s?)", parser_tokval(parser), correct);
2075 parseerror(parser, "unexpected identifier: %s", parser_tokval(parser));
2081 if (ast_istype(var, ast_value)) {
2082 ((ast_value*)var)->uses++;
2084 else if (ast_istype(var, ast_member)) {
2085 ast_member *mem = (ast_member*)var;
2086 if (ast_istype(mem->owner, ast_value))
2087 ((ast_value*)(mem->owner))->uses++;
2090 vec_push(sy->out, syexp(parser_ctx(parser), var));
2093 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
2097 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
2099 ast_expression *expr = NULL;
2102 bool wantop = false;
2103 /* only warn once about an assignment in a truth value because the current code
2104 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
2106 bool warn_truthvalue = true;
2108 /* count the parens because an if starts with one, so the
2109 * end of a condition is an unmatched closing paren
2113 memset(&sy, 0, sizeof(sy));
2115 parser->lex->flags.noops = false;
2117 parser_reclassify_token(parser);
2121 if (parser->tok == TOKEN_TYPENAME) {
2122 parseerror(parser, "unexpected typename `%s`", parser_tokval(parser));
2126 if (parser->tok == TOKEN_OPERATOR)
2128 /* classify the operator */
2129 const oper_info *op;
2130 const oper_info *olast = NULL;
2132 for (o = 0; o < operator_count; ++o) {
2133 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
2134 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
2135 !strcmp(parser_tokval(parser), operators[o].op))
2140 if (o == operator_count) {
2141 compile_error(parser_ctx(parser), "unknown operator: %s", parser_tokval(parser));
2144 /* found an operator */
2147 /* when declaring variables, a comma starts a new variable */
2148 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
2149 /* fixup the token */
2154 /* a colon without a pervious question mark cannot be a ternary */
2155 if (!ternaries && op->id == opid2(':','?')) {
2160 if (op->id == opid1(',')) {
2161 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2162 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
2166 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2167 olast = &operators[vec_last(sy.ops).etype-1];
2169 #define IsAssignOp(x) (\
2170 (x) == opid1('=') || \
2171 (x) == opid2('+','=') || \
2172 (x) == opid2('-','=') || \
2173 (x) == opid2('*','=') || \
2174 (x) == opid2('/','=') || \
2175 (x) == opid2('%','=') || \
2176 (x) == opid2('&','=') || \
2177 (x) == opid2('|','=') || \
2178 (x) == opid3('&','~','=') \
2180 if (warn_truthvalue) {
2181 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
2182 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
2183 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
2186 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
2187 warn_truthvalue = false;
2192 (op->prec < olast->prec) ||
2193 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
2195 if (!parser_sy_apply_operator(parser, &sy))
2197 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2198 olast = &operators[vec_last(sy.ops).etype-1];
2203 if (op->id == opid1('(')) {
2205 size_t sycount = vec_size(sy.out);
2206 /* we expected an operator, this is the function-call operator */
2207 vec_push(sy.paren, PAREN_FUNC);
2208 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
2209 vec_push(sy.argc, 0);
2211 vec_push(sy.paren, PAREN_EXPR);
2212 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2215 } else if (op->id == opid1('[')) {
2217 parseerror(parser, "unexpected array subscript");
2220 vec_push(sy.paren, PAREN_INDEX);
2221 /* push both the operator and the paren, this makes life easier */
2222 vec_push(sy.ops, syop(parser_ctx(parser), op));
2223 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2225 } else if (op->id == opid2('?',':')) {
2226 vec_push(sy.ops, syop(parser_ctx(parser), op));
2227 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2230 vec_push(sy.paren, PAREN_TERNARY1);
2231 } else if (op->id == opid2(':','?')) {
2232 if (!vec_size(sy.paren)) {
2233 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2236 if (vec_last(sy.paren) != PAREN_TERNARY1) {
2237 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2240 if (!parser_close_paren(parser, &sy))
2242 vec_push(sy.ops, syop(parser_ctx(parser), op));
2246 vec_push(sy.ops, syop(parser_ctx(parser), op));
2247 wantop = !!(op->flags & OP_SUFFIX);
2250 else if (parser->tok == ')') {
2251 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2252 if (!parser_sy_apply_operator(parser, &sy))
2255 if (!vec_size(sy.paren))
2258 if (vec_last(sy.paren) == PAREN_TERNARY1) {
2259 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
2262 if (!parser_close_paren(parser, &sy))
2265 /* must be a function call without parameters */
2266 if (vec_last(sy.paren) != PAREN_FUNC) {
2267 parseerror(parser, "closing paren in invalid position");
2270 if (!parser_close_paren(parser, &sy))
2275 else if (parser->tok == '(') {
2276 parseerror(parser, "internal error: '(' should be classified as operator");
2279 else if (parser->tok == '[') {
2280 parseerror(parser, "internal error: '[' should be classified as operator");
2283 else if (parser->tok == ']') {
2284 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2285 if (!parser_sy_apply_operator(parser, &sy))
2288 if (!vec_size(sy.paren))
2290 if (vec_last(sy.paren) != PAREN_INDEX) {
2291 parseerror(parser, "mismatched parentheses, unexpected ']'");
2294 if (!parser_close_paren(parser, &sy))
2299 if (!parse_sya_operand(parser, &sy, with_labels))
2302 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
2303 vec_last(sy.argc)++;
2308 /* in this case we might want to allow constant string concatenation */
2309 bool concatenated = false;
2310 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
2311 ast_expression *lexpr = vec_last(sy.out).out;
2312 if (ast_istype(lexpr, ast_value)) {
2313 ast_value *last = (ast_value*)lexpr;
2314 if (last->isimm == true && last->cvq == CV_CONST &&
2315 last->hasvalue && last->expression.vtype == TYPE_STRING)
2317 char *newstr = NULL;
2318 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
2319 vec_last(sy.out).out = (ast_expression*)parser_const_string(parser, newstr, false);
2321 concatenated = true;
2325 if (!concatenated) {
2326 parseerror(parser, "expected operator or end of statement");
2331 if (!parser_next(parser)) {
2334 if (parser->tok == ';' ||
2335 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
2336 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
2342 while (vec_size(sy.ops)) {
2343 if (!parser_sy_apply_operator(parser, &sy))
2347 parser->lex->flags.noops = true;
2348 if (vec_size(sy.out) != 1) {
2349 parseerror(parser, "expression with not 1 but %lu output values...", (unsigned long) vec_size(sy.out));
2352 expr = sy.out[0].out;
2355 if (vec_size(sy.paren)) {
2356 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
2364 parser->lex->flags.noops = true;
2365 for (i = 0; i < vec_size(sy.out); ++i) {
2367 ast_unref(sy.out[i].out);
2376 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
2378 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
2381 if (parser->tok != ';') {
2382 parseerror(parser, "semicolon expected after expression");
2386 if (!parser_next(parser)) {
2393 static void parser_enterblock(parser_t *parser)
2395 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2396 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2397 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2398 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2399 vec_push(parser->_block_ctx, parser_ctx(parser));
2402 vec_push(parser->correct_variables, correct_trie_new());
2403 vec_push(parser->correct_variables_score, NULL);
2406 static bool parser_leaveblock(parser_t *parser)
2409 size_t locals, typedefs;
2411 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2412 parseerror(parser, "internal error: parser_leaveblock with no block");
2416 util_htdel(vec_last(parser->variables));
2417 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2419 vec_pop(parser->variables);
2420 vec_pop(parser->correct_variables);
2421 vec_pop(parser->correct_variables_score);
2422 if (!vec_size(parser->_blocklocals)) {
2423 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2427 locals = vec_last(parser->_blocklocals);
2428 vec_pop(parser->_blocklocals);
2429 while (vec_size(parser->_locals) != locals) {
2430 ast_expression *e = vec_last(parser->_locals);
2431 ast_value *v = (ast_value*)e;
2432 vec_pop(parser->_locals);
2433 if (ast_istype(e, ast_value) && !v->uses) {
2434 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2439 typedefs = vec_last(parser->_blocktypedefs);
2440 while (vec_size(parser->_typedefs) != typedefs) {
2441 ast_delete(vec_last(parser->_typedefs));
2442 vec_pop(parser->_typedefs);
2444 util_htdel(vec_last(parser->typedefs));
2445 vec_pop(parser->typedefs);
2447 vec_pop(parser->_block_ctx);
2452 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2454 vec_push(parser->_locals, e);
2455 util_htset(vec_last(parser->variables), name, (void*)e);
2459 vec_last(parser->correct_variables),
2460 &vec_last(parser->correct_variables_score),
2465 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2467 vec_push(parser->globals, e);
2468 util_htset(parser->htglobals, name, e);
2472 parser->correct_variables[0],
2473 &parser->correct_variables_score[0],
2478 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2482 ast_expression *prev;
2484 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2486 ast_type_to_string(cond, ty, sizeof(ty));
2487 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2490 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2493 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2496 parseerror(parser, "internal error: failed to process condition");
2501 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2503 /* vector types need to be cast to true booleans */
2504 ast_binary *bin = (ast_binary*)cond;
2505 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2507 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2509 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2512 parseerror(parser, "internal error: failed to process condition");
2519 unary = (ast_unary*)cond;
2520 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2522 cond = unary->operand;
2523 unary->operand = NULL;
2526 unary = (ast_unary*)cond;
2530 parseerror(parser, "internal error: failed to process condition");
2532 if (ifnot) *_ifnot = !*_ifnot;
2536 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2539 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2542 lex_ctx ctx = parser_ctx(parser);
2544 (void)block; /* not touching */
2546 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2547 if (!parser_next(parser)) {
2548 parseerror(parser, "expected condition or 'not'");
2551 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2553 if (!parser_next(parser)) {
2554 parseerror(parser, "expected condition in parenthesis");
2558 if (parser->tok != '(') {
2559 parseerror(parser, "expected 'if' condition in parenthesis");
2562 /* parse into the expression */
2563 if (!parser_next(parser)) {
2564 parseerror(parser, "expected 'if' condition after opening paren");
2567 /* parse the condition */
2568 cond = parse_expression_leave(parser, false, true, false);
2572 if (parser->tok != ')') {
2573 parseerror(parser, "expected closing paren after 'if' condition");
2577 /* parse into the 'then' branch */
2578 if (!parser_next(parser)) {
2579 parseerror(parser, "expected statement for on-true branch of 'if'");
2583 if (!parse_statement_or_block(parser, &ontrue)) {
2588 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2589 /* check for an else */
2590 if (!strcmp(parser_tokval(parser), "else")) {
2591 /* parse into the 'else' branch */
2592 if (!parser_next(parser)) {
2593 parseerror(parser, "expected on-false branch after 'else'");
2598 if (!parse_statement_or_block(parser, &onfalse)) {
2605 cond = process_condition(parser, cond, &ifnot);
2607 if (ontrue) ast_delete(ontrue);
2608 if (onfalse) ast_delete(onfalse);
2613 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2615 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2616 *out = (ast_expression*)ifthen;
2620 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2621 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2626 /* skip the 'while' and get the body */
2627 if (!parser_next(parser)) {
2628 if (OPTS_FLAG(LOOP_LABELS))
2629 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2631 parseerror(parser, "expected 'while' condition in parenthesis");
2635 if (parser->tok == ':') {
2636 if (!OPTS_FLAG(LOOP_LABELS))
2637 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2638 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2639 parseerror(parser, "expected loop label");
2642 label = util_strdup(parser_tokval(parser));
2643 if (!parser_next(parser)) {
2645 parseerror(parser, "expected 'while' condition in parenthesis");
2650 if (parser->tok != '(') {
2651 parseerror(parser, "expected 'while' condition in parenthesis");
2655 vec_push(parser->breaks, label);
2656 vec_push(parser->continues, label);
2658 rv = parse_while_go(parser, block, out);
2661 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2662 parseerror(parser, "internal error: label stack corrupted");
2668 vec_pop(parser->breaks);
2669 vec_pop(parser->continues);
2674 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2677 ast_expression *cond, *ontrue;
2681 lex_ctx ctx = parser_ctx(parser);
2683 (void)block; /* not touching */
2685 /* parse into the expression */
2686 if (!parser_next(parser)) {
2687 parseerror(parser, "expected 'while' condition after opening paren");
2690 /* parse the condition */
2691 cond = parse_expression_leave(parser, false, true, false);
2695 if (parser->tok != ')') {
2696 parseerror(parser, "expected closing paren after 'while' condition");
2700 /* parse into the 'then' branch */
2701 if (!parser_next(parser)) {
2702 parseerror(parser, "expected while-loop body");
2706 if (!parse_statement_or_block(parser, &ontrue)) {
2711 cond = process_condition(parser, cond, &ifnot);
2716 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2717 *out = (ast_expression*)aloop;
2721 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2722 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2727 /* skip the 'do' and get the body */
2728 if (!parser_next(parser)) {
2729 if (OPTS_FLAG(LOOP_LABELS))
2730 parseerror(parser, "expected loop label or body");
2732 parseerror(parser, "expected loop body");
2736 if (parser->tok == ':') {
2737 if (!OPTS_FLAG(LOOP_LABELS))
2738 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2739 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2740 parseerror(parser, "expected loop label");
2743 label = util_strdup(parser_tokval(parser));
2744 if (!parser_next(parser)) {
2746 parseerror(parser, "expected loop body");
2751 vec_push(parser->breaks, label);
2752 vec_push(parser->continues, label);
2754 rv = parse_dowhile_go(parser, block, out);
2757 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2758 parseerror(parser, "internal error: label stack corrupted");
2764 vec_pop(parser->breaks);
2765 vec_pop(parser->continues);
2770 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2773 ast_expression *cond, *ontrue;
2777 lex_ctx ctx = parser_ctx(parser);
2779 (void)block; /* not touching */
2781 if (!parse_statement_or_block(parser, &ontrue))
2784 /* expect the "while" */
2785 if (parser->tok != TOKEN_KEYWORD ||
2786 strcmp(parser_tokval(parser), "while"))
2788 parseerror(parser, "expected 'while' and condition");
2793 /* skip the 'while' and check for opening paren */
2794 if (!parser_next(parser) || parser->tok != '(') {
2795 parseerror(parser, "expected 'while' condition in parenthesis");
2799 /* parse into the expression */
2800 if (!parser_next(parser)) {
2801 parseerror(parser, "expected 'while' condition after opening paren");
2805 /* parse the condition */
2806 cond = parse_expression_leave(parser, false, true, false);
2810 if (parser->tok != ')') {
2811 parseerror(parser, "expected closing paren after 'while' condition");
2817 if (!parser_next(parser) || parser->tok != ';') {
2818 parseerror(parser, "expected semicolon after condition");
2824 if (!parser_next(parser)) {
2825 parseerror(parser, "parse error");
2831 cond = process_condition(parser, cond, &ifnot);
2836 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2837 *out = (ast_expression*)aloop;
2841 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2842 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2847 /* skip the 'for' and check for opening paren */
2848 if (!parser_next(parser)) {
2849 if (OPTS_FLAG(LOOP_LABELS))
2850 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2852 parseerror(parser, "expected 'for' expressions in parenthesis");
2856 if (parser->tok == ':') {
2857 if (!OPTS_FLAG(LOOP_LABELS))
2858 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2859 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2860 parseerror(parser, "expected loop label");
2863 label = util_strdup(parser_tokval(parser));
2864 if (!parser_next(parser)) {
2866 parseerror(parser, "expected 'for' expressions in parenthesis");
2871 if (parser->tok != '(') {
2872 parseerror(parser, "expected 'for' expressions in parenthesis");
2876 vec_push(parser->breaks, label);
2877 vec_push(parser->continues, label);
2879 rv = parse_for_go(parser, block, out);
2882 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2883 parseerror(parser, "internal error: label stack corrupted");
2889 vec_pop(parser->breaks);
2890 vec_pop(parser->continues);
2894 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2897 ast_expression *initexpr, *cond, *increment, *ontrue;
2902 lex_ctx ctx = parser_ctx(parser);
2904 parser_enterblock(parser);
2911 /* parse into the expression */
2912 if (!parser_next(parser)) {
2913 parseerror(parser, "expected 'for' initializer after opening paren");
2918 if (parser->tok == TOKEN_IDENT)
2919 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2921 if (typevar || parser->tok == TOKEN_TYPENAME) {
2923 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2924 if (parsewarning(parser, WARN_EXTENSIONS,
2925 "current standard does not allow variable declarations in for-loop initializers"))
2929 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2932 else if (parser->tok != ';')
2934 initexpr = parse_expression_leave(parser, false, false, false);
2939 /* move on to condition */
2940 if (parser->tok != ';') {
2941 parseerror(parser, "expected semicolon after for-loop initializer");
2944 if (!parser_next(parser)) {
2945 parseerror(parser, "expected for-loop condition");
2949 /* parse the condition */
2950 if (parser->tok != ';') {
2951 cond = parse_expression_leave(parser, false, true, false);
2956 /* move on to incrementor */
2957 if (parser->tok != ';') {
2958 parseerror(parser, "expected semicolon after for-loop initializer");
2961 if (!parser_next(parser)) {
2962 parseerror(parser, "expected for-loop condition");
2966 /* parse the incrementor */
2967 if (parser->tok != ')') {
2968 lex_ctx condctx = parser_ctx(parser);
2969 increment = parse_expression_leave(parser, false, false, false);
2972 if (!ast_side_effects(increment)) {
2973 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2979 if (parser->tok != ')') {
2980 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2983 /* parse into the 'then' branch */
2984 if (!parser_next(parser)) {
2985 parseerror(parser, "expected for-loop body");
2988 if (!parse_statement_or_block(parser, &ontrue))
2992 cond = process_condition(parser, cond, &ifnot);
2996 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2997 *out = (ast_expression*)aloop;
2999 if (!parser_leaveblock(parser)) {
3005 if (initexpr) ast_unref(initexpr);
3006 if (cond) ast_unref(cond);
3007 if (increment) ast_unref(increment);
3008 (void)!parser_leaveblock(parser);
3012 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
3014 ast_expression *exp = NULL;
3015 ast_expression *var = NULL;
3016 ast_return *ret = NULL;
3017 ast_value *retval = parser->function->return_value;
3018 ast_value *expected = parser->function->vtype;
3020 lex_ctx ctx = parser_ctx(parser);
3022 (void)block; /* not touching */
3024 if (!parser_next(parser)) {
3025 parseerror(parser, "expected return expression");
3029 /* return assignments */
3030 if (parser->tok == '=') {
3031 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
3032 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
3036 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
3038 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
3039 parseerror(parser, "invalid return type: `%s'", ty1);
3043 if (!parser_next(parser)) {
3044 parseerror(parser, "expected return assignment expression");
3048 if (!(exp = parse_expression_leave(parser, false, false, false)))
3051 /* prepare the return value */
3053 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
3054 ast_type_adopt(retval, expected->expression.next);
3055 parser->function->return_value = retval;
3058 if (!ast_compare_type(exp, (ast_expression*)retval)) {
3059 char ty1[1024], ty2[1024];
3060 ast_type_to_string(exp, ty1, sizeof(ty1));
3061 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
3062 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
3065 /* store to 'return' local variable */
3066 var = (ast_expression*)ast_store_new(
3068 type_store_instr[expected->expression.next->vtype],
3069 (ast_expression*)retval, exp);
3076 if (parser->tok != ';')
3077 parseerror(parser, "missing semicolon after return assignment");
3078 else if (!parser_next(parser))
3079 parseerror(parser, "parse error after return assignment");
3085 if (parser->tok != ';') {
3086 exp = parse_expression(parser, false, false);
3090 if (exp->vtype != TYPE_NIL &&
3091 exp->vtype != ((ast_expression*)expected)->next->vtype)
3093 parseerror(parser, "return with invalid expression");
3096 ret = ast_return_new(ctx, exp);
3102 if (!parser_next(parser))
3103 parseerror(parser, "parse error");
3105 if (!retval && expected->expression.next->vtype != TYPE_VOID)
3107 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
3109 ret = ast_return_new(ctx, (ast_expression*)retval);
3111 *out = (ast_expression*)ret;
3115 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
3118 unsigned int levels = 0;
3119 lex_ctx ctx = parser_ctx(parser);
3120 const char **loops = (is_continue ? parser->continues : parser->breaks);
3122 (void)block; /* not touching */
3123 if (!parser_next(parser)) {
3124 parseerror(parser, "expected semicolon or loop label");
3128 if (!vec_size(loops)) {
3130 parseerror(parser, "`continue` can only be used inside loops");
3132 parseerror(parser, "`break` can only be used inside loops or switches");
3135 if (parser->tok == TOKEN_IDENT) {
3136 if (!OPTS_FLAG(LOOP_LABELS))
3137 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3138 i = vec_size(loops);
3140 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
3143 parseerror(parser, "no such loop to %s: `%s`",
3144 (is_continue ? "continue" : "break out of"),
3145 parser_tokval(parser));
3150 if (!parser_next(parser)) {
3151 parseerror(parser, "expected semicolon");
3156 if (parser->tok != ';') {
3157 parseerror(parser, "expected semicolon");
3161 if (!parser_next(parser))
3162 parseerror(parser, "parse error");
3164 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
3168 /* returns true when it was a variable qualifier, false otherwise!
3169 * on error, cvq is set to CV_WRONG
3171 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
3173 bool had_const = false;
3174 bool had_var = false;
3175 bool had_noref = false;
3176 bool had_attrib = false;
3177 bool had_static = false;
3182 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
3184 /* parse an attribute */
3185 if (!parser_next(parser)) {
3186 parseerror(parser, "expected attribute after `[[`");
3190 if (!strcmp(parser_tokval(parser), "noreturn")) {
3191 flags |= AST_FLAG_NORETURN;
3192 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3193 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
3198 else if (!strcmp(parser_tokval(parser), "noref")) {
3200 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3201 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
3206 else if (!strcmp(parser_tokval(parser), "inline")) {
3207 flags |= AST_FLAG_INLINE;
3208 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3209 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
3214 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
3215 flags |= AST_FLAG_ALIAS;
3218 if (!parser_next(parser)) {
3219 parseerror(parser, "parse error in attribute");
3223 if (parser->tok == '(') {
3224 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
3225 parseerror(parser, "`alias` attribute missing parameter");
3229 *message = util_strdup(parser_tokval(parser));
3231 if (!parser_next(parser)) {
3232 parseerror(parser, "parse error in attribute");
3236 if (parser->tok != ')') {
3237 parseerror(parser, "`alias` attribute expected `)` after parameter");
3241 if (!parser_next(parser)) {
3242 parseerror(parser, "parse error in attribute");
3247 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3248 parseerror(parser, "`alias` attribute expected `]]`");
3252 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
3253 flags |= AST_FLAG_DEPRECATED;
3256 if (!parser_next(parser)) {
3257 parseerror(parser, "parse error in attribute");
3261 if (parser->tok == '(') {
3262 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
3263 parseerror(parser, "`deprecated` attribute missing parameter");
3267 *message = util_strdup(parser_tokval(parser));
3269 if (!parser_next(parser)) {
3270 parseerror(parser, "parse error in attribute");
3274 if(parser->tok != ')') {
3275 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
3279 if (!parser_next(parser)) {
3280 parseerror(parser, "parse error in attribute");
3285 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3286 parseerror(parser, "`deprecated` attribute expected `]]`");
3289 if (*message) mem_d(*message);
3297 /* Skip tokens until we hit a ]] */
3298 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
3299 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3300 if (!parser_next(parser)) {
3301 parseerror(parser, "error inside attribute");
3308 else if (with_local && !strcmp(parser_tokval(parser), "static"))
3310 else if (!strcmp(parser_tokval(parser), "const"))
3312 else if (!strcmp(parser_tokval(parser), "var"))
3314 else if (with_local && !strcmp(parser_tokval(parser), "local"))
3316 else if (!strcmp(parser_tokval(parser), "noref"))
3318 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
3323 if (!parser_next(parser))
3333 *is_static = had_static;
3337 parseerror(parser, "parse error after variable qualifier");
3342 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
3343 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
3348 /* skip the 'while' and get the body */
3349 if (!parser_next(parser)) {
3350 if (OPTS_FLAG(LOOP_LABELS))
3351 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
3353 parseerror(parser, "expected 'switch' operand in parenthesis");
3357 if (parser->tok == ':') {
3358 if (!OPTS_FLAG(LOOP_LABELS))
3359 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3360 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3361 parseerror(parser, "expected loop label");
3364 label = util_strdup(parser_tokval(parser));
3365 if (!parser_next(parser)) {
3367 parseerror(parser, "expected 'switch' operand in parenthesis");
3372 if (parser->tok != '(') {
3373 parseerror(parser, "expected 'switch' operand in parenthesis");
3377 vec_push(parser->breaks, label);
3379 rv = parse_switch_go(parser, block, out);
3382 if (vec_last(parser->breaks) != label) {
3383 parseerror(parser, "internal error: label stack corrupted");
3389 vec_pop(parser->breaks);
3394 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3396 ast_expression *operand;
3399 ast_switch *switchnode;
3400 ast_switch_case swcase;
3403 bool noref, is_static;
3404 uint32_t qflags = 0;
3406 lex_ctx ctx = parser_ctx(parser);
3408 (void)block; /* not touching */
3411 /* parse into the expression */
3412 if (!parser_next(parser)) {
3413 parseerror(parser, "expected switch operand");
3416 /* parse the operand */
3417 operand = parse_expression_leave(parser, false, false, false);
3421 switchnode = ast_switch_new(ctx, operand);
3424 if (parser->tok != ')') {
3425 ast_delete(switchnode);
3426 parseerror(parser, "expected closing paren after 'switch' operand");
3430 /* parse over the opening paren */
3431 if (!parser_next(parser) || parser->tok != '{') {
3432 ast_delete(switchnode);
3433 parseerror(parser, "expected list of cases");
3437 if (!parser_next(parser)) {
3438 ast_delete(switchnode);
3439 parseerror(parser, "expected 'case' or 'default'");
3443 /* new block; allow some variables to be declared here */
3444 parser_enterblock(parser);
3447 if (parser->tok == TOKEN_IDENT)
3448 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3449 if (typevar || parser->tok == TOKEN_TYPENAME) {
3450 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3451 ast_delete(switchnode);
3456 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3458 if (cvq == CV_WRONG) {
3459 ast_delete(switchnode);
3462 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3463 ast_delete(switchnode);
3472 while (parser->tok != '}') {
3473 ast_block *caseblock;
3475 if (!strcmp(parser_tokval(parser), "case")) {
3476 if (!parser_next(parser)) {
3477 ast_delete(switchnode);
3478 parseerror(parser, "expected expression for case");
3481 swcase.value = parse_expression_leave(parser, false, false, false);
3482 if (!swcase.value) {
3483 ast_delete(switchnode);
3484 parseerror(parser, "expected expression for case");
3487 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3488 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3489 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3495 else if (!strcmp(parser_tokval(parser), "default")) {
3496 swcase.value = NULL;
3497 if (!parser_next(parser)) {
3498 ast_delete(switchnode);
3499 parseerror(parser, "expected colon");
3504 ast_delete(switchnode);
3505 parseerror(parser, "expected 'case' or 'default'");
3509 /* Now the colon and body */
3510 if (parser->tok != ':') {
3511 if (swcase.value) ast_unref(swcase.value);
3512 ast_delete(switchnode);
3513 parseerror(parser, "expected colon");
3517 if (!parser_next(parser)) {
3518 if (swcase.value) ast_unref(swcase.value);
3519 ast_delete(switchnode);
3520 parseerror(parser, "expected statements or case");
3523 caseblock = ast_block_new(parser_ctx(parser));
3525 if (swcase.value) ast_unref(swcase.value);
3526 ast_delete(switchnode);
3529 swcase.code = (ast_expression*)caseblock;
3530 vec_push(switchnode->cases, swcase);
3532 ast_expression *expr;
3533 if (parser->tok == '}')
3535 if (parser->tok == TOKEN_KEYWORD) {
3536 if (!strcmp(parser_tokval(parser), "case") ||
3537 !strcmp(parser_tokval(parser), "default"))
3542 if (!parse_statement(parser, caseblock, &expr, true)) {
3543 ast_delete(switchnode);
3548 if (!ast_block_add_expr(caseblock, expr)) {
3549 ast_delete(switchnode);
3555 parser_leaveblock(parser);
3558 if (parser->tok != '}') {
3559 ast_delete(switchnode);
3560 parseerror(parser, "expected closing paren of case list");
3563 if (!parser_next(parser)) {
3564 ast_delete(switchnode);
3565 parseerror(parser, "parse error after switch");
3568 *out = (ast_expression*)switchnode;
3572 /* parse computed goto sides */
3573 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3574 ast_expression *on_true;
3575 ast_expression *on_false;
3576 ast_expression *cond;
3581 if (ast_istype(*side, ast_ternary)) {
3582 ast_ternary *tern = (ast_ternary*)*side;
3583 on_true = parse_goto_computed(parser, &tern->on_true);
3584 on_false = parse_goto_computed(parser, &tern->on_false);
3586 if (!on_true || !on_false) {
3587 parseerror(parser, "expected label or expression in ternary");
3588 if (on_true) ast_unref(on_true);
3589 if (on_false) ast_unref(on_false);
3597 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3598 } else if (ast_istype(*side, ast_label)) {
3599 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3600 ast_goto_set_label(gt, ((ast_label*)*side));
3602 return (ast_expression*)gt;
3607 static bool parse_goto(parser_t *parser, ast_expression **out)
3609 ast_goto *gt = NULL;
3610 ast_expression *lbl;
3612 if (!parser_next(parser))
3615 if (parser->tok != TOKEN_IDENT) {
3616 ast_expression *expression;
3618 /* could be an expression i.e computed goto :-) */
3619 if (parser->tok != '(') {
3620 parseerror(parser, "expected label name after `goto`");
3624 /* failed to parse expression for goto */
3625 if (!(expression = parse_expression(parser, false, true)) ||
3626 !(*out = parse_goto_computed(parser, &expression))) {
3627 parseerror(parser, "invalid goto expression");
3628 ast_unref(expression);
3635 /* not computed goto */
3636 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3637 lbl = parser_find_label(parser, gt->name);
3639 if (!ast_istype(lbl, ast_label)) {
3640 parseerror(parser, "internal error: label is not an ast_label");
3644 ast_goto_set_label(gt, (ast_label*)lbl);
3647 vec_push(parser->gotos, gt);
3649 if (!parser_next(parser) || parser->tok != ';') {
3650 parseerror(parser, "semicolon expected after goto label");
3653 if (!parser_next(parser)) {
3654 parseerror(parser, "parse error after goto");
3658 *out = (ast_expression*)gt;
3662 static bool parse_skipwhite(parser_t *parser)
3665 if (!parser_next(parser))
3667 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3668 return parser->tok < TOKEN_ERROR;
3671 static bool parse_eol(parser_t *parser)
3673 if (!parse_skipwhite(parser))
3675 return parser->tok == TOKEN_EOL;
3678 static bool parse_pragma_do(parser_t *parser)
3680 if (!parser_next(parser) ||
3681 parser->tok != TOKEN_IDENT ||
3682 strcmp(parser_tokval(parser), "pragma"))
3684 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3687 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3688 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3692 if (!strcmp(parser_tokval(parser), "noref")) {
3693 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3694 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3697 parser->noref = !!parser_token(parser)->constval.i;
3698 if (!parse_eol(parser)) {
3699 parseerror(parser, "parse error after `noref` pragma");
3705 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3712 static bool parse_pragma(parser_t *parser)
3715 parser->lex->flags.preprocessing = true;
3716 parser->lex->flags.mergelines = true;
3717 rv = parse_pragma_do(parser);
3718 if (parser->tok != TOKEN_EOL) {
3719 parseerror(parser, "junk after pragma");
3722 parser->lex->flags.preprocessing = false;
3723 parser->lex->flags.mergelines = false;
3724 if (!parser_next(parser)) {
3725 parseerror(parser, "parse error after pragma");
3731 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3733 bool noref, is_static;
3735 uint32_t qflags = 0;
3736 ast_value *typevar = NULL;
3737 char *vstring = NULL;
3741 if (parser->tok == TOKEN_IDENT)
3742 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3744 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3746 /* local variable */
3748 parseerror(parser, "cannot declare a variable from here");
3751 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3752 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3755 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3759 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3761 if (cvq == CV_WRONG)
3763 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3765 else if (parser->tok == TOKEN_KEYWORD)
3767 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3772 if (!parser_next(parser)) {
3773 parseerror(parser, "parse error after __builtin_debug_printtype");
3777 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3779 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3780 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3781 if (!parser_next(parser)) {
3782 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3788 if (!parse_statement(parser, block, out, allow_cases))
3791 con_out("__builtin_debug_printtype: got no output node\n");
3794 ast_type_to_string(*out, ty, sizeof(ty));
3795 con_out("__builtin_debug_printtype: `%s`\n", ty);
3800 else if (!strcmp(parser_tokval(parser), "return"))
3802 return parse_return(parser, block, out);
3804 else if (!strcmp(parser_tokval(parser), "if"))
3806 return parse_if(parser, block, out);
3808 else if (!strcmp(parser_tokval(parser), "while"))
3810 return parse_while(parser, block, out);
3812 else if (!strcmp(parser_tokval(parser), "do"))
3814 return parse_dowhile(parser, block, out);
3816 else if (!strcmp(parser_tokval(parser), "for"))
3818 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3819 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3822 return parse_for(parser, block, out);
3824 else if (!strcmp(parser_tokval(parser), "break"))
3826 return parse_break_continue(parser, block, out, false);
3828 else if (!strcmp(parser_tokval(parser), "continue"))
3830 return parse_break_continue(parser, block, out, true);
3832 else if (!strcmp(parser_tokval(parser), "switch"))
3834 return parse_switch(parser, block, out);
3836 else if (!strcmp(parser_tokval(parser), "case") ||
3837 !strcmp(parser_tokval(parser), "default"))
3840 parseerror(parser, "unexpected 'case' label");
3845 else if (!strcmp(parser_tokval(parser), "goto"))
3847 return parse_goto(parser, out);
3849 else if (!strcmp(parser_tokval(parser), "typedef"))
3851 if (!parser_next(parser)) {
3852 parseerror(parser, "expected type definition after 'typedef'");
3855 return parse_typedef(parser);
3857 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3860 else if (parser->tok == '{')
3863 inner = parse_block(parser);
3866 *out = (ast_expression*)inner;
3869 else if (parser->tok == ':')
3873 if (!parser_next(parser)) {
3874 parseerror(parser, "expected label name");
3877 if (parser->tok != TOKEN_IDENT) {
3878 parseerror(parser, "label must be an identifier");
3881 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3883 if (!label->undefined) {
3884 parseerror(parser, "label `%s` already defined", label->name);
3887 label->undefined = false;
3890 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3891 vec_push(parser->labels, label);
3893 *out = (ast_expression*)label;
3894 if (!parser_next(parser)) {
3895 parseerror(parser, "parse error after label");
3898 for (i = 0; i < vec_size(parser->gotos); ++i) {
3899 if (!strcmp(parser->gotos[i]->name, label->name)) {
3900 ast_goto_set_label(parser->gotos[i], label);
3901 vec_remove(parser->gotos, i, 1);
3907 else if (parser->tok == ';')
3909 if (!parser_next(parser)) {
3910 parseerror(parser, "parse error after empty statement");
3917 lex_ctx ctx = parser_ctx(parser);
3918 ast_expression *exp = parse_expression(parser, false, false);
3922 if (!ast_side_effects(exp)) {
3923 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3930 static bool parse_enum(parser_t *parser)
3933 bool reverse = false;
3935 ast_value **values = NULL;
3936 ast_value *var = NULL;
3939 ast_expression *old;
3941 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3942 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3946 /* enumeration attributes (can add more later) */
3947 if (parser->tok == ':') {
3948 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3949 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3954 if (!strcmp(parser_tokval(parser), "flag")) {
3958 else if (!strcmp(parser_tokval(parser), "reverse")) {
3962 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3966 if (!parser_next(parser) || parser->tok != '{') {
3967 parseerror(parser, "expected `{` after enum attribute ");
3973 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3974 if (parser->tok == '}') {
3975 /* allow an empty enum */
3978 parseerror(parser, "expected identifier or `}`");
3982 old = parser_find_field(parser, parser_tokval(parser));
3984 old = parser_find_global(parser, parser_tokval(parser));
3986 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3987 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3991 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3992 vec_push(values, var);
3993 var->cvq = CV_CONST;
3994 var->hasvalue = true;
3996 /* for flagged enumerations increment in POTs of TWO */
3997 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3998 parser_addglobal(parser, var->name, (ast_expression*)var);
4000 if (!parser_next(parser)) {
4001 parseerror(parser, "expected `=`, `}` or comma after identifier");
4005 if (parser->tok == ',')
4007 if (parser->tok == '}')
4009 if (parser->tok != '=') {
4010 parseerror(parser, "expected `=`, `}` or comma after identifier");
4014 if (!parser_next(parser)) {
4015 parseerror(parser, "expected expression after `=`");
4019 /* We got a value! */
4020 old = parse_expression_leave(parser, true, false, false);
4021 asvalue = (ast_value*)old;
4022 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
4023 compile_error(ast_ctx(var), "constant value or expression expected");
4026 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
4028 if (parser->tok == '}')
4030 if (parser->tok != ',') {
4031 parseerror(parser, "expected `}` or comma after expression");
4036 /* patch them all (for reversed attribute) */
4039 for (i = 0; i < vec_size(values); i++)
4040 values[i]->constval.vfloat = vec_size(values) - i - 1;
4043 if (parser->tok != '}') {
4044 parseerror(parser, "internal error: breaking without `}`");
4048 if (!parser_next(parser) || parser->tok != ';') {
4049 parseerror(parser, "expected semicolon after enumeration");
4053 if (!parser_next(parser)) {
4054 parseerror(parser, "parse error after enumeration");
4066 static bool parse_block_into(parser_t *parser, ast_block *block)
4070 parser_enterblock(parser);
4072 if (!parser_next(parser)) { /* skip the '{' */
4073 parseerror(parser, "expected function body");
4077 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4079 ast_expression *expr = NULL;
4080 if (parser->tok == '}')
4083 if (!parse_statement(parser, block, &expr, false)) {
4084 /* parseerror(parser, "parse error"); */
4090 if (!ast_block_add_expr(block, expr)) {
4097 if (parser->tok != '}') {
4100 (void)parser_next(parser);
4104 if (!parser_leaveblock(parser))
4106 return retval && !!block;
4109 static ast_block* parse_block(parser_t *parser)
4112 block = ast_block_new(parser_ctx(parser));
4115 if (!parse_block_into(parser, block)) {
4116 ast_block_delete(block);
4122 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
4124 if (parser->tok == '{') {
4125 *out = (ast_expression*)parse_block(parser);
4128 return parse_statement(parser, NULL, out, false);
4131 static bool create_vector_members(ast_value *var, ast_member **me)
4134 size_t len = strlen(var->name);
4136 for (i = 0; i < 3; ++i) {
4137 char *name = (char*)mem_a(len+3);
4138 memcpy(name, var->name, len);
4140 name[len+1] = 'x'+i;
4142 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
4151 do { ast_member_delete(me[--i]); } while(i);
4155 static bool parse_function_body(parser_t *parser, ast_value *var)
4157 ast_block *block = NULL;
4162 ast_expression *framenum = NULL;
4163 ast_expression *nextthink = NULL;
4164 /* None of the following have to be deleted */
4165 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
4166 ast_expression *gbl_time = NULL, *gbl_self = NULL;
4167 bool has_frame_think;
4171 has_frame_think = false;
4172 old = parser->function;
4174 if (var->expression.flags & AST_FLAG_ALIAS) {
4175 parseerror(parser, "function aliases cannot have bodies");
4179 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
4180 parseerror(parser, "gotos/labels leaking");
4184 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4185 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
4186 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
4192 if (parser->tok == '[') {
4193 /* got a frame definition: [ framenum, nextthink ]
4194 * this translates to:
4195 * self.frame = framenum;
4196 * self.nextthink = time + 0.1;
4197 * self.think = nextthink;
4201 fld_think = parser_find_field(parser, "think");
4202 fld_nextthink = parser_find_field(parser, "nextthink");
4203 fld_frame = parser_find_field(parser, "frame");
4204 if (!fld_think || !fld_nextthink || !fld_frame) {
4205 parseerror(parser, "cannot use [frame,think] notation without the required fields");
4206 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
4209 gbl_time = parser_find_global(parser, "time");
4210 gbl_self = parser_find_global(parser, "self");
4211 if (!gbl_time || !gbl_self) {
4212 parseerror(parser, "cannot use [frame,think] notation without the required globals");
4213 parseerror(parser, "please declare the following globals: `time`, `self`");
4217 if (!parser_next(parser))
4220 framenum = parse_expression_leave(parser, true, false, false);
4222 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
4225 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
4226 ast_unref(framenum);
4227 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
4231 if (parser->tok != ',') {
4232 ast_unref(framenum);
4233 parseerror(parser, "expected comma after frame number in [frame,think] notation");
4234 parseerror(parser, "Got a %i\n", parser->tok);
4238 if (!parser_next(parser)) {
4239 ast_unref(framenum);
4243 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
4245 /* qc allows the use of not-yet-declared functions here
4246 * - this automatically creates a prototype */
4247 ast_value *thinkfunc;
4248 ast_expression *functype = fld_think->next;
4250 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
4251 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
4252 ast_unref(framenum);
4253 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
4256 ast_type_adopt(thinkfunc, functype);
4258 if (!parser_next(parser)) {
4259 ast_unref(framenum);
4260 ast_delete(thinkfunc);
4264 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
4266 nextthink = (ast_expression*)thinkfunc;
4269 nextthink = parse_expression_leave(parser, true, false, false);
4271 ast_unref(framenum);
4272 parseerror(parser, "expected a think-function in [frame,think] notation");
4277 if (!ast_istype(nextthink, ast_value)) {
4278 parseerror(parser, "think-function in [frame,think] notation must be a constant");
4282 if (retval && parser->tok != ']') {
4283 parseerror(parser, "expected closing `]` for [frame,think] notation");
4287 if (retval && !parser_next(parser)) {
4291 if (retval && parser->tok != '{') {
4292 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
4297 ast_unref(nextthink);
4298 ast_unref(framenum);
4302 has_frame_think = true;
4305 block = ast_block_new(parser_ctx(parser));
4307 parseerror(parser, "failed to allocate block");
4308 if (has_frame_think) {
4309 ast_unref(nextthink);
4310 ast_unref(framenum);
4315 if (has_frame_think) {
4317 ast_expression *self_frame;
4318 ast_expression *self_nextthink;
4319 ast_expression *self_think;
4320 ast_expression *time_plus_1;
4321 ast_store *store_frame;
4322 ast_store *store_nextthink;
4323 ast_store *store_think;
4325 ctx = parser_ctx(parser);
4326 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
4327 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
4328 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
4330 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
4331 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
4333 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
4334 if (self_frame) ast_delete(self_frame);
4335 if (self_nextthink) ast_delete(self_nextthink);
4336 if (self_think) ast_delete(self_think);
4337 if (time_plus_1) ast_delete(time_plus_1);
4343 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
4344 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
4345 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
4348 ast_delete(self_frame);
4351 if (!store_nextthink) {
4352 ast_delete(self_nextthink);
4356 ast_delete(self_think);
4360 if (store_frame) ast_delete(store_frame);
4361 if (store_nextthink) ast_delete(store_nextthink);
4362 if (store_think) ast_delete(store_think);
4365 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
4366 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
4367 !ast_block_add_expr(block, (ast_expression*)store_think))
4374 parseerror(parser, "failed to generate code for [frame,think]");
4375 ast_unref(nextthink);
4376 ast_unref(framenum);
4382 if (var->hasvalue) {
4383 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
4384 ast_block_delete(block);
4388 func = ast_function_new(ast_ctx(var), var->name, var);
4390 parseerror(parser, "failed to allocate function for `%s`", var->name);
4391 ast_block_delete(block);
4394 vec_push(parser->functions, func);
4396 parser_enterblock(parser);
4398 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
4400 ast_value *param = var->expression.params[parami];
4403 if (param->expression.vtype != TYPE_VECTOR &&
4404 (param->expression.vtype != TYPE_FIELD ||
4405 param->expression.next->vtype != TYPE_VECTOR))
4410 if (!create_vector_members(param, me)) {
4411 ast_block_delete(block);
4415 for (e = 0; e < 3; ++e) {
4416 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4417 ast_block_collect(block, (ast_expression*)me[e]);
4421 if (var->argcounter) {
4422 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4423 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4427 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4429 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4430 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4431 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4432 varargs->expression.count = 0;
4433 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4434 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4435 ast_delete(varargs);
4436 ast_block_delete(block);
4439 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4440 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4441 ast_delete(varargs);
4442 ast_block_delete(block);
4445 func->varargs = varargs;
4447 func->fixedparams = parser_const_float(parser, vec_size(var->expression.params));
4450 parser->function = func;
4451 if (!parse_block_into(parser, block)) {
4452 ast_block_delete(block);
4456 vec_push(func->blocks, block);
4459 parser->function = old;
4460 if (!parser_leaveblock(parser))
4462 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4463 parseerror(parser, "internal error: local scopes left");
4467 if (parser->tok == ';')
4468 return parser_next(parser);
4469 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4470 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4474 (void)!parser_leaveblock(parser);
4475 vec_pop(parser->functions);
4476 ast_function_delete(func);
4477 var->constval.vfunc = NULL;
4480 parser->function = old;
4484 static ast_expression *array_accessor_split(
4489 ast_expression *left,
4490 ast_expression *right
4496 lex_ctx ctx = ast_ctx(array);
4498 if (!left || !right) {
4499 if (left) ast_delete(left);
4500 if (right) ast_delete(right);
4504 cmp = ast_binary_new(ctx, INSTR_LT,
4505 (ast_expression*)index,
4506 (ast_expression*)parser_const_float(parser, middle));
4510 parseerror(parser, "internal error: failed to create comparison for array setter");
4514 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4516 ast_delete(cmp); /* will delete left and right */
4517 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4521 return (ast_expression*)ifthen;
4524 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4526 lex_ctx ctx = ast_ctx(array);
4528 if (from+1 == afterend) {
4529 /* set this value */
4532 ast_array_index *subscript;
4534 int assignop = type_store_instr[value->expression.vtype];
4536 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4537 assignop = INSTR_STORE_V;
4539 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4543 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4545 ast_delete(subscript);
4549 block = ast_block_new(ctx);
4555 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4560 ret = ast_return_new(ctx, NULL);
4566 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4571 return (ast_expression*)block;
4573 ast_expression *left, *right;
4574 size_t diff = afterend - from;
4575 size_t middle = from + diff/2;
4576 left = array_setter_node(parser, array, index, value, from, middle);
4577 right = array_setter_node(parser, array, index, value, middle, afterend);
4578 return array_accessor_split(parser, array, index, middle, left, right);
4582 static ast_expression *array_field_setter_node(
4591 lex_ctx ctx = ast_ctx(array);
4593 if (from+1 == afterend) {
4594 /* set this value */
4597 ast_entfield *entfield;
4598 ast_array_index *subscript;
4600 int assignop = type_storep_instr[value->expression.vtype];
4602 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4603 assignop = INSTR_STOREP_V;
4605 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4609 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4610 subscript->expression.vtype = TYPE_FIELD;
4612 entfield = ast_entfield_new_force(ctx,
4613 (ast_expression*)entity,
4614 (ast_expression*)subscript,
4615 (ast_expression*)subscript);
4617 ast_delete(subscript);
4621 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4623 ast_delete(entfield);
4627 block = ast_block_new(ctx);
4633 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4638 ret = ast_return_new(ctx, NULL);
4644 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4649 return (ast_expression*)block;
4651 ast_expression *left, *right;
4652 size_t diff = afterend - from;
4653 size_t middle = from + diff/2;
4654 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4655 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4656 return array_accessor_split(parser, array, index, middle, left, right);
4660 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4662 lex_ctx ctx = ast_ctx(array);
4664 if (from+1 == afterend) {
4666 ast_array_index *subscript;
4668 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4672 ret = ast_return_new(ctx, (ast_expression*)subscript);
4674 ast_delete(subscript);
4678 return (ast_expression*)ret;
4680 ast_expression *left, *right;
4681 size_t diff = afterend - from;
4682 size_t middle = from + diff/2;
4683 left = array_getter_node(parser, array, index, from, middle);
4684 right = array_getter_node(parser, array, index, middle, afterend);
4685 return array_accessor_split(parser, array, index, middle, left, right);
4689 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4691 ast_function *func = NULL;
4692 ast_value *fval = NULL;
4693 ast_block *body = NULL;
4695 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4697 parseerror(parser, "failed to create accessor function value");
4701 func = ast_function_new(ast_ctx(array), funcname, fval);
4704 parseerror(parser, "failed to create accessor function node");
4708 body = ast_block_new(ast_ctx(array));
4710 parseerror(parser, "failed to create block for array accessor");
4716 vec_push(func->blocks, body);
4719 vec_push(parser->accessors, fval);
4724 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4726 ast_value *index = NULL;
4727 ast_value *value = NULL;
4731 if (!ast_istype(array->expression.next, ast_value)) {
4732 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4736 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4738 func = fval->constval.vfunc;
4739 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4741 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4742 value = ast_value_copy((ast_value*)array->expression.next);
4744 if (!index || !value) {
4745 parseerror(parser, "failed to create locals for array accessor");
4748 (void)!ast_value_set_name(value, "value"); /* not important */
4749 vec_push(fval->expression.params, index);
4750 vec_push(fval->expression.params, value);
4752 array->setter = fval;
4755 if (index) ast_delete(index);
4756 if (value) ast_delete(value);
4762 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4764 ast_expression *root = NULL;
4765 root = array_setter_node(parser, array,
4766 array->setter->expression.params[0],
4767 array->setter->expression.params[1],
4768 0, array->expression.count);
4770 parseerror(parser, "failed to build accessor search tree");
4773 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4780 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4782 if (!parser_create_array_setter_proto(parser, array, funcname))
4784 return parser_create_array_setter_impl(parser, array);
4787 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4789 ast_expression *root = NULL;
4790 ast_value *entity = NULL;
4791 ast_value *index = NULL;
4792 ast_value *value = NULL;
4796 if (!ast_istype(array->expression.next, ast_value)) {
4797 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4801 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4803 func = fval->constval.vfunc;
4804 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4806 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4807 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4808 value = ast_value_copy((ast_value*)array->expression.next);
4809 if (!entity || !index || !value) {
4810 parseerror(parser, "failed to create locals for array accessor");
4813 (void)!ast_value_set_name(value, "value"); /* not important */
4814 vec_push(fval->expression.params, entity);
4815 vec_push(fval->expression.params, index);
4816 vec_push(fval->expression.params, value);
4818 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4820 parseerror(parser, "failed to build accessor search tree");
4824 array->setter = fval;
4825 return ast_block_add_expr(func->blocks[0], root);
4827 if (entity) ast_delete(entity);
4828 if (index) ast_delete(index);
4829 if (value) ast_delete(value);
4830 if (root) ast_delete(root);
4836 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4838 ast_value *index = NULL;
4842 /* NOTE: checking array->expression.next rather than elemtype since
4843 * for fields elemtype is a temporary fieldtype.
4845 if (!ast_istype(array->expression.next, ast_value)) {
4846 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4850 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4852 func = fval->constval.vfunc;
4853 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4855 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4858 parseerror(parser, "failed to create locals for array accessor");
4861 vec_push(fval->expression.params, index);
4863 array->getter = fval;
4866 if (index) ast_delete(index);
4872 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4874 ast_expression *root = NULL;
4876 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4878 parseerror(parser, "failed to build accessor search tree");
4881 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4888 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4890 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4892 return parser_create_array_getter_impl(parser, array);
4895 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4896 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4904 bool variadic = false;
4905 ast_value *varparam = NULL;
4906 char *argcounter = NULL;
4908 ctx = parser_ctx(parser);
4910 /* for the sake of less code we parse-in in this function */
4911 if (!parser_next(parser)) {
4913 parseerror(parser, "expected parameter list");
4919 /* parse variables until we hit a closing paren */
4920 while (parser->tok != ')') {
4922 /* there must be commas between them */
4923 if (parser->tok != ',') {
4924 parseerror(parser, "expected comma or end of parameter list");
4927 if (!parser_next(parser)) {
4928 parseerror(parser, "expected parameter");
4934 if (parser->tok == TOKEN_DOTS) {
4935 /* '...' indicates a varargs function */
4937 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4938 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4941 if (parser->tok == TOKEN_IDENT) {
4942 argcounter = util_strdup(parser_tokval(parser));
4943 if (!parser_next(parser) || parser->tok != ')') {
4944 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4951 /* for anything else just parse a typename */
4952 param = parse_typename(parser, NULL, NULL);
4955 vec_push(params, param);
4956 if (param->expression.vtype >= TYPE_VARIANT) {
4957 char tname[1024]; /* typename is reserved in C++ */
4958 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4959 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4962 /* type-restricted varargs */
4963 if (parser->tok == TOKEN_DOTS) {
4965 varparam = vec_last(params);
4967 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4968 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4971 if (parser->tok == TOKEN_IDENT) {
4972 argcounter = util_strdup(parser_tokval(parser));
4973 if (!parser_next(parser) || parser->tok != ')') {
4974 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4982 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4986 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4987 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4990 if (!parser_next(parser)) {
4991 parseerror(parser, "parse error after typename");
4995 /* now turn 'var' into a function type */
4996 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4997 fval->expression.next = (ast_expression*)var;
4999 fval->expression.flags |= AST_FLAG_VARIADIC;
5002 var->expression.params = params;
5003 var->expression.varparam = (ast_expression*)varparam;
5004 var->argcounter = argcounter;
5013 ast_delete(varparam);
5015 for (i = 0; i < vec_size(params); ++i)
5016 ast_delete(params[i]);
5021 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
5023 ast_expression *cexp;
5024 ast_value *cval, *tmp;
5027 ctx = parser_ctx(parser);
5029 if (!parser_next(parser)) {
5031 parseerror(parser, "expected array-size");
5035 if (parser->tok != ']') {
5036 cexp = parse_expression_leave(parser, true, false, false);
5038 if (!cexp || !ast_istype(cexp, ast_value)) {
5042 parseerror(parser, "expected array-size as constant positive integer");
5045 cval = (ast_value*)cexp;
5052 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
5053 tmp->expression.next = (ast_expression*)var;
5057 if (cval->expression.vtype == TYPE_INTEGER)
5058 tmp->expression.count = cval->constval.vint;
5059 else if (cval->expression.vtype == TYPE_FLOAT)
5060 tmp->expression.count = cval->constval.vfloat;
5064 parseerror(parser, "array-size must be a positive integer constant");
5070 var->expression.count = -1;
5071 var->expression.flags |= AST_FLAG_ARRAY_INIT;
5074 if (parser->tok != ']') {
5076 parseerror(parser, "expected ']' after array-size");
5079 if (!parser_next(parser)) {
5081 parseerror(parser, "error after parsing array size");
5087 /* Parse a complete typename.
5088 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
5089 * but when parsing variables separated by comma
5090 * 'storebase' should point to where the base-type should be kept.
5091 * The base type makes up every bit of type information which comes *before* the
5094 * The following will be parsed in its entirety:
5096 * The 'basetype' in this case is 'void()'
5097 * and if there's a comma after it, say:
5099 * then the type-information 'void()' can be stored in 'storebase'
5101 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
5103 ast_value *var, *tmp;
5106 const char *name = NULL;
5107 bool isfield = false;
5108 bool wasarray = false;
5109 size_t morefields = 0;
5111 ctx = parser_ctx(parser);
5113 /* types may start with a dot */
5114 if (parser->tok == '.') {
5116 /* if we parsed a dot we need a typename now */
5117 if (!parser_next(parser)) {
5118 parseerror(parser, "expected typename for field definition");
5122 /* Further dots are handled seperately because they won't be part of the
5125 while (parser->tok == '.') {
5127 if (!parser_next(parser)) {
5128 parseerror(parser, "expected typename for field definition");
5133 if (parser->tok == TOKEN_IDENT)
5134 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
5135 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
5136 parseerror(parser, "expected typename");
5140 /* generate the basic type value */
5141 if (cached_typedef) {
5142 var = ast_value_copy(cached_typedef);
5143 ast_value_set_name(var, "<type(from_def)>");
5145 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
5147 for (; morefields; --morefields) {
5148 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
5149 tmp->expression.next = (ast_expression*)var;
5153 /* do not yet turn into a field - remember:
5154 * .void() foo; is a field too
5155 * .void()() foo; is a function
5159 if (!parser_next(parser)) {
5161 parseerror(parser, "parse error after typename");
5165 /* an opening paren now starts the parameter-list of a function
5166 * this is where original-QC has parameter lists.
5167 * We allow a single parameter list here.
5168 * Much like fteqcc we don't allow `float()() x`
5170 if (parser->tok == '(') {
5171 var = parse_parameter_list(parser, var);
5176 /* store the base if requested */
5178 *storebase = ast_value_copy(var);
5180 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5181 tmp->expression.next = (ast_expression*)*storebase;
5186 /* there may be a name now */
5187 if (parser->tok == TOKEN_IDENT) {
5188 name = util_strdup(parser_tokval(parser));
5190 if (!parser_next(parser)) {
5193 parseerror(parser, "error after variable or field declaration");
5198 /* now this may be an array */
5199 if (parser->tok == '[') {
5201 var = parse_arraysize(parser, var);
5203 if (name) mem_d(name);
5208 /* This is the point where we can turn it into a field */
5210 /* turn it into a field if desired */
5211 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5212 tmp->expression.next = (ast_expression*)var;
5216 /* now there may be function parens again */
5217 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5218 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5219 if (parser->tok == '(' && wasarray)
5220 parseerror(parser, "arrays as part of a return type is not supported");
5221 while (parser->tok == '(') {
5222 var = parse_parameter_list(parser, var);
5224 if (name) mem_d(name);
5229 /* finally name it */
5231 if (!ast_value_set_name(var, name)) {
5234 parseerror(parser, "internal error: failed to set name");
5237 /* free the name, ast_value_set_name duplicates */
5244 static bool parse_typedef(parser_t *parser)
5246 ast_value *typevar, *oldtype;
5247 ast_expression *old;
5249 typevar = parse_typename(parser, NULL, NULL);
5254 if ( (old = parser_find_var(parser, typevar->name)) ) {
5255 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
5256 " -> `%s` has been declared here: %s:%i",
5257 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
5258 ast_delete(typevar);
5262 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
5263 parseerror(parser, "type `%s` has already been declared here: %s:%i",
5264 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
5265 ast_delete(typevar);
5269 vec_push(parser->_typedefs, typevar);
5270 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
5272 if (parser->tok != ';') {
5273 parseerror(parser, "expected semicolon after typedef");
5276 if (!parser_next(parser)) {
5277 parseerror(parser, "parse error after typedef");
5284 static const char *cvq_to_str(int cvq) {
5286 case CV_NONE: return "none";
5287 case CV_VAR: return "`var`";
5288 case CV_CONST: return "`const`";
5289 default: return "<INVALID>";
5293 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
5296 if (proto->cvq != var->cvq) {
5297 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
5298 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5299 parser->tok == '='))
5301 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
5302 "`%s` declared with different qualifiers: %s\n"
5303 " -> previous declaration here: %s:%i uses %s",
5304 var->name, cvq_to_str(var->cvq),
5305 ast_ctx(proto).file, ast_ctx(proto).line,
5306 cvq_to_str(proto->cvq));
5309 av = (var ->expression.flags & AST_FLAG_NORETURN);
5310 ao = (proto->expression.flags & AST_FLAG_NORETURN);
5312 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
5313 "`%s` declared with different attributes%s\n"
5314 " -> previous declaration here: %s:%i",
5315 var->name, (av ? ": noreturn" : ""),
5316 ast_ctx(proto).file, ast_ctx(proto).line,
5317 (ao ? ": noreturn" : ""));
5322 static bool create_array_accessors(parser_t *parser, ast_value *var)
5325 util_snprintf(name, sizeof(name), "%s##SET", var->name);
5326 if (!parser_create_array_setter(parser, var, name))
5328 util_snprintf(name, sizeof(name), "%s##GET", var->name);
5329 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5334 static bool parse_array(parser_t *parser, ast_value *array)
5337 if (array->initlist) {
5338 parseerror(parser, "array already initialized elsewhere");
5341 if (!parser_next(parser)) {
5342 parseerror(parser, "parse error in array initializer");
5346 while (parser->tok != '}') {
5347 ast_value *v = (ast_value*)parse_expression_leave(parser, true, false, false);
5350 if (!ast_istype(v, ast_value) || !v->hasvalue || v->cvq != CV_CONST) {
5352 parseerror(parser, "initializing element must be a compile time constant");
5355 vec_push(array->initlist, v->constval);
5356 if (v->expression.vtype == TYPE_STRING) {
5357 array->initlist[i].vstring = util_strdupe(array->initlist[i].vstring);
5361 if (parser->tok == '}')
5363 if (parser->tok != ',' || !parser_next(parser)) {
5364 parseerror(parser, "expected comma or '}' in element list");
5368 if (!parser_next(parser) || parser->tok != ';') {
5369 parseerror(parser, "expected semicolon after initializer, got %s");
5373 if (!parser_next(parser)) {
5374 parseerror(parser, "parse error after initializer");
5379 if (array->expression.flags & AST_FLAG_ARRAY_INIT) {
5380 if (array->expression.count != (size_t)-1) {
5381 parseerror(parser, "array `%s' has already been initialized with %u elements",
5382 array->name, (unsigned)array->expression.count);
5384 array->expression.count = vec_size(array->initlist);
5385 if (!create_array_accessors(parser, array))
5391 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)
5395 ast_expression *old;
5399 ast_value *basetype = NULL;
5401 bool isparam = false;
5402 bool isvector = false;
5403 bool cleanvar = true;
5404 bool wasarray = false;
5406 ast_member *me[3] = { NULL, NULL, NULL };
5408 if (!localblock && is_static)
5409 parseerror(parser, "`static` qualifier is not supported in global scope");
5411 /* get the first complete variable */
5412 var = parse_typename(parser, &basetype, cached_typedef);
5415 ast_delete(basetype);
5423 /* Part 0: finish the type */
5424 if (parser->tok == '(') {
5425 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5426 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5427 var = parse_parameter_list(parser, var);
5433 /* we only allow 1-dimensional arrays */
5434 if (parser->tok == '[') {
5436 var = parse_arraysize(parser, var);
5442 if (parser->tok == '(' && wasarray) {
5443 parseerror(parser, "arrays as part of a return type is not supported");
5444 /* we'll still parse the type completely for now */
5446 /* for functions returning functions */
5447 while (parser->tok == '(') {
5448 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5449 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5450 var = parse_parameter_list(parser, var);
5457 var->cvq = qualifier;
5458 var->expression.flags |= qflags;
5461 * store the vstring back to var for alias and
5462 * deprecation messages.
5464 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5465 var->expression.flags & AST_FLAG_ALIAS)
5466 var->desc = vstring;
5469 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5470 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5471 * is then filled with the previous definition and the parameter-names replaced.
5473 if (!strcmp(var->name, "nil")) {
5474 if (OPTS_FLAG(UNTYPED_NIL)) {
5475 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5476 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5478 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5481 /* Deal with end_sys_ vars */
5483 if (!strcmp(var->name, "end_sys_globals")) {
5485 parser->crc_globals = vec_size(parser->globals);
5488 else if (!strcmp(var->name, "end_sys_fields")) {
5490 parser->crc_fields = vec_size(parser->fields);
5493 if (was_end && var->expression.vtype == TYPE_FIELD) {
5494 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5495 "global '%s' hint should not be a field",
5496 parser_tokval(parser)))
5503 if (!nofields && var->expression.vtype == TYPE_FIELD)
5505 /* deal with field declarations */
5506 old = parser_find_field(parser, var->name);
5508 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5509 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5518 parseerror(parser, "field `%s` already declared here: %s:%i",
5519 var->name, ast_ctx(old).file, ast_ctx(old).line);
5524 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5525 (old = parser_find_global(parser, var->name)))
5527 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5528 parseerror(parser, "field `%s` already declared here: %s:%i",
5529 var->name, ast_ctx(old).file, ast_ctx(old).line);
5536 /* deal with other globals */
5537 old = parser_find_global(parser, var->name);
5538 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5540 /* This is a function which had a prototype */
5541 if (!ast_istype(old, ast_value)) {
5542 parseerror(parser, "internal error: prototype is not an ast_value");
5546 proto = (ast_value*)old;
5547 proto->desc = var->desc;
5548 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5549 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5551 ast_ctx(proto).file, ast_ctx(proto).line);
5555 /* we need the new parameter-names */
5556 for (i = 0; i < vec_size(proto->expression.params); ++i)
5557 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5558 if (!parser_check_qualifiers(parser, var, proto)) {
5565 proto->expression.flags |= var->expression.flags;
5573 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5574 "global `%s` already declared here: %s:%i",
5575 var->name, ast_ctx(old).file, ast_ctx(old).line))
5580 proto = (ast_value*)old;
5581 if (!ast_istype(old, ast_value)) {
5582 parseerror(parser, "internal error: not an ast_value");
5587 if (!parser_check_qualifiers(parser, var, proto)) {
5592 proto->expression.flags |= var->expression.flags;
5596 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5597 (old = parser_find_field(parser, var->name)))
5599 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5600 parseerror(parser, "global `%s` already declared here: %s:%i",
5601 var->name, ast_ctx(old).file, ast_ctx(old).line);
5608 else /* it's not a global */
5610 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5611 if (old && !isparam) {
5612 parseerror(parser, "local `%s` already declared here: %s:%i",
5613 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5617 old = parser_find_local(parser, var->name, 0, &isparam);
5618 if (old && isparam) {
5619 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5620 "local `%s` is shadowing a parameter", var->name))
5622 parseerror(parser, "local `%s` already declared here: %s:%i",
5623 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5627 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5635 /* in a noref section we simply bump the usecount */
5636 if (noref || parser->noref)
5640 * Create the global/local, and deal with vector types.
5643 if (var->expression.vtype == TYPE_VECTOR)
5645 else if (var->expression.vtype == TYPE_FIELD &&
5646 var->expression.next->vtype == TYPE_VECTOR)
5650 if (!create_vector_members(var, me)) {
5657 /* deal with global variables, fields, functions */
5658 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5659 var->isfield = true;
5660 vec_push(parser->fields, (ast_expression*)var);
5661 util_htset(parser->htfields, var->name, var);
5663 for (i = 0; i < 3; ++i) {
5664 vec_push(parser->fields, (ast_expression*)me[i]);
5665 util_htset(parser->htfields, me[i]->name, me[i]);
5670 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5671 parser_addglobal(parser, var->name, (ast_expression*)var);
5673 for (i = 0; i < 3; ++i) {
5674 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5678 ast_expression *find = parser_find_global(parser, var->desc);
5681 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5685 if (var->expression.vtype != find->vtype) {
5689 ast_type_to_string(find, ty1, sizeof(ty1));
5690 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5692 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5699 * add alias to aliases table and to corrector
5700 * so corrections can apply for aliases as well.
5702 util_htset(parser->aliases, var->name, find);
5705 * add to corrector so corrections can work
5706 * even for aliases too.
5709 vec_last(parser->correct_variables),
5710 &vec_last(parser->correct_variables_score),
5714 /* generate aliases for vector components */
5718 util_asprintf(&buffer[0], "%s_x", var->desc);
5719 util_asprintf(&buffer[1], "%s_y", var->desc);
5720 util_asprintf(&buffer[2], "%s_z", var->desc);
5722 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5723 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5724 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5731 * add to corrector so corrections can work
5732 * even for aliases too.
5735 vec_last(parser->correct_variables),
5736 &vec_last(parser->correct_variables_score),
5740 vec_last(parser->correct_variables),
5741 &vec_last(parser->correct_variables_score),
5745 vec_last(parser->correct_variables),
5746 &vec_last(parser->correct_variables_score),
5754 /* a static adds itself to be generated like any other global
5755 * but is added to the local namespace instead
5757 char *defname = NULL;
5758 size_t prefix_len, ln;
5760 ln = strlen(parser->function->name);
5761 vec_append(defname, ln, parser->function->name);
5763 vec_append(defname, 2, "::");
5764 /* remember the length up to here */
5765 prefix_len = vec_size(defname);
5767 /* Add it to the local scope */
5768 util_htset(vec_last(parser->variables), var->name, (void*)var);
5772 vec_last(parser->correct_variables),
5773 &vec_last(parser->correct_variables_score),
5777 /* now rename the global */
5778 ln = strlen(var->name);
5779 vec_append(defname, ln, var->name);
5780 ast_value_set_name(var, defname);
5782 /* push it to the to-be-generated globals */
5783 vec_push(parser->globals, (ast_expression*)var);
5785 /* same game for the vector members */
5787 for (i = 0; i < 3; ++i) {
5788 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5792 vec_last(parser->correct_variables),
5793 &vec_last(parser->correct_variables_score),
5797 vec_shrinkto(defname, prefix_len);
5798 ln = strlen(me[i]->name);
5799 vec_append(defname, ln, me[i]->name);
5800 ast_member_set_name(me[i], defname);
5802 vec_push(parser->globals, (ast_expression*)me[i]);
5807 vec_push(localblock->locals, var);
5808 parser_addlocal(parser, var->name, (ast_expression*)var);
5810 for (i = 0; i < 3; ++i) {
5811 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5812 ast_block_collect(localblock, (ast_expression*)me[i]);
5818 me[0] = me[1] = me[2] = NULL;
5823 if (var->expression.vtype == TYPE_ARRAY) {
5824 if (var->expression.count != (size_t)-1) {
5825 if (!create_array_accessors(parser, var))
5829 else if (!localblock && !nofields &&
5830 var->expression.vtype == TYPE_FIELD &&
5831 var->expression.next->vtype == TYPE_ARRAY)
5834 ast_expression *telem;
5836 ast_value *array = (ast_value*)var->expression.next;
5838 if (!ast_istype(var->expression.next, ast_value)) {
5839 parseerror(parser, "internal error: field element type must be an ast_value");
5843 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5844 if (!parser_create_array_field_setter(parser, array, name))
5847 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5848 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5849 tfield->expression.next = telem;
5850 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5851 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5859 if (parser->tok == ';') {
5860 ast_delete(basetype);
5861 if (!parser_next(parser)) {
5862 parseerror(parser, "error after variable declaration");
5868 if (parser->tok == ',')
5872 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5875 parseerror(parser, "missing comma or semicolon while parsing variables");
5879 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5880 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5881 "initializing expression turns variable `%s` into a constant in this standard",
5888 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5889 if (parser->tok != '=') {
5890 if (!strcmp(parser_tokval(parser), "break")) {
5891 if (!parser_next(parser)) {
5892 parseerror(parser, "error parsing break definition");
5895 (void)!!parsewarning(parser, WARN_BREAKDEF, "break definition ignored (suggest removing it)");
5897 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5902 if (!parser_next(parser)) {
5903 parseerror(parser, "error parsing initializer");
5907 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5908 parseerror(parser, "expected '=' before function body in this standard");
5911 if (parser->tok == '#') {
5912 ast_function *func = NULL;
5913 ast_value *number = NULL;
5919 parseerror(parser, "cannot declare builtins within functions");
5922 if (var->expression.vtype != TYPE_FUNCTION) {
5923 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5926 if (!parser_next(parser)) {
5927 parseerror(parser, "expected builtin number");
5931 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5932 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5934 parseerror(parser, "builtin number expected");
5937 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5940 parseerror(parser, "builtin number must be a compile time constant");
5943 if (number->expression.vtype == TYPE_INTEGER)
5944 builtin_num = number->constval.vint;
5945 else if (number->expression.vtype == TYPE_FLOAT)
5946 builtin_num = number->constval.vfloat;
5949 parseerror(parser, "builtin number must be an integer constant");
5954 fractional = modff(builtin_num, &integral);
5955 if (builtin_num < 0 || fractional != 0) {
5956 parseerror(parser, "builtin number must be an integer greater than zero");
5960 /* we only want the integral part anyways */
5961 builtin_num = integral;
5962 } else if (parser->tok == TOKEN_INTCONST) {
5963 builtin_num = parser_token(parser)->constval.i;
5965 parseerror(parser, "builtin number must be a compile time constant");
5969 if (var->hasvalue) {
5970 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5971 "builtin `%s` has already been defined\n"
5972 " -> previous declaration here: %s:%i",
5973 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5977 func = ast_function_new(ast_ctx(var), var->name, var);
5979 parseerror(parser, "failed to allocate function for `%s`", var->name);
5982 vec_push(parser->functions, func);
5984 func->builtin = -builtin_num-1;
5987 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5988 ? (parser->tok != ',' && parser->tok != ';')
5989 : (!parser_next(parser)))
5991 parseerror(parser, "expected comma or semicolon");
5993 ast_function_delete(func);
5994 var->constval.vfunc = NULL;
5998 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
6001 /* Note that fteqcc and most others don't even *have*
6002 * local arrays, so this is not a high priority.
6004 parseerror(parser, "TODO: initializers for local arrays");
6008 var->hasvalue = true;
6009 if (!parse_array(parser, var))
6012 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
6015 parseerror(parser, "cannot declare functions within functions");
6020 ast_ctx(proto) = parser_ctx(parser);
6022 if (!parse_function_body(parser, var))
6024 ast_delete(basetype);
6025 for (i = 0; i < vec_size(parser->gotos); ++i)
6026 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
6027 vec_free(parser->gotos);
6028 vec_free(parser->labels);
6031 ast_expression *cexp;
6034 cexp = parse_expression_leave(parser, true, false, false);
6039 cval = (ast_value*)cexp;
6040 if (cval != parser->nil &&
6041 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
6044 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
6048 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
6049 qualifier != CV_VAR)
6051 var->cvq = CV_CONST;
6053 if (cval == parser->nil)
6054 var->expression.flags |= AST_FLAG_INITIALIZED;
6057 var->hasvalue = true;
6058 if (cval->expression.vtype == TYPE_STRING)
6059 var->constval.vstring = parser_strdup(cval->constval.vstring);
6060 else if (cval->expression.vtype == TYPE_FIELD)
6061 var->constval.vfield = cval;
6063 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
6069 shunt sy = { NULL, NULL, NULL, NULL };
6072 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
6073 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
6074 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
6075 if (!parser_sy_apply_operator(parser, &sy))
6078 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
6079 parseerror(parser, "internal error: leaked operands");
6080 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
6091 if (parser->tok == ',') {
6092 if (!parser_next(parser)) {
6093 parseerror(parser, "expected another variable");
6097 if (parser->tok != TOKEN_IDENT) {
6098 parseerror(parser, "expected another variable");
6101 var = ast_value_copy(basetype);
6103 ast_value_set_name(var, parser_tokval(parser));
6104 if (!parser_next(parser)) {
6105 parseerror(parser, "error parsing variable declaration");
6111 if (parser->tok != ';') {
6112 parseerror(parser, "missing semicolon after variables");
6116 if (!parser_next(parser)) {
6117 parseerror(parser, "parse error after variable declaration");
6121 ast_delete(basetype);
6125 if (cleanvar && var)
6127 ast_delete(basetype);
6131 ast_delete(basetype);
6132 if (cleanvar && var)
6134 if (me[0]) ast_member_delete(me[0]);
6135 if (me[1]) ast_member_delete(me[1]);
6136 if (me[2]) ast_member_delete(me[2]);
6140 static bool parser_global_statement(parser_t *parser)
6144 bool is_static = false;
6145 uint32_t qflags = 0;
6146 ast_value *istype = NULL;
6147 char *vstring = NULL;
6149 if (parser->tok == TOKEN_IDENT)
6150 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
6152 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
6154 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
6156 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
6158 if (cvq == CV_WRONG)
6160 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
6162 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
6164 return parse_enum(parser);
6166 else if (parser->tok == TOKEN_KEYWORD)
6168 if (!strcmp(parser_tokval(parser), "typedef")) {
6169 if (!parser_next(parser)) {
6170 parseerror(parser, "expected type definition after 'typedef'");
6173 return parse_typedef(parser);
6175 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
6178 else if (parser->tok == '#')
6180 return parse_pragma(parser);
6182 else if (parser->tok == '$')
6184 if (!parser_next(parser)) {
6185 parseerror(parser, "parse error");
6191 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
6197 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
6199 return util_crc16(old, str, strlen(str));
6202 static void progdefs_crc_file(const char *str)
6204 /* write to progdefs.h here */
6208 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
6210 old = progdefs_crc_sum(old, str);
6211 progdefs_crc_file(str);
6215 static void generate_checksum(parser_t *parser)
6217 uint16_t crc = 0xFFFF;
6221 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
6222 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
6224 progdefs_crc_file("\tint\tpad;\n");
6225 progdefs_crc_file("\tint\tofs_return[3];\n");
6226 progdefs_crc_file("\tint\tofs_parm0[3];\n");
6227 progdefs_crc_file("\tint\tofs_parm1[3];\n");
6228 progdefs_crc_file("\tint\tofs_parm2[3];\n");
6229 progdefs_crc_file("\tint\tofs_parm3[3];\n");
6230 progdefs_crc_file("\tint\tofs_parm4[3];\n");
6231 progdefs_crc_file("\tint\tofs_parm5[3];\n");
6232 progdefs_crc_file("\tint\tofs_parm6[3];\n");
6233 progdefs_crc_file("\tint\tofs_parm7[3];\n");
6235 for (i = 0; i < parser->crc_globals; ++i) {
6236 if (!ast_istype(parser->globals[i], ast_value))
6238 value = (ast_value*)(parser->globals[i]);
6239 switch (value->expression.vtype) {
6240 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6241 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6242 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6243 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6245 crc = progdefs_crc_both(crc, "\tint\t");
6248 crc = progdefs_crc_both(crc, value->name);
6249 crc = progdefs_crc_both(crc, ";\n");
6251 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
6252 for (i = 0; i < parser->crc_fields; ++i) {
6253 if (!ast_istype(parser->fields[i], ast_value))
6255 value = (ast_value*)(parser->fields[i]);
6256 switch (value->expression.next->vtype) {
6257 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6258 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6259 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6260 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6262 crc = progdefs_crc_both(crc, "\tint\t");
6265 crc = progdefs_crc_both(crc, value->name);
6266 crc = progdefs_crc_both(crc, ";\n");
6268 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
6270 parser->code->crc = crc;
6273 parser_t *parser_create()
6279 parser = (parser_t*)mem_a(sizeof(parser_t));
6283 memset(parser, 0, sizeof(*parser));
6285 if (!(parser->code = code_init())) {
6290 for (i = 0; i < operator_count; ++i) {
6291 if (operators[i].id == opid1('=')) {
6292 parser->assign_op = operators+i;
6296 if (!parser->assign_op) {
6297 printf("internal error: initializing parser: failed to find assign operator\n");
6302 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
6303 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
6304 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
6305 vec_push(parser->_blocktypedefs, 0);
6307 parser->aliases = util_htnew(PARSER_HT_SIZE);
6309 parser->ht_imm_string = util_htnew(512);
6312 vec_push(parser->correct_variables, correct_trie_new());
6313 vec_push(parser->correct_variables_score, NULL);
6315 empty_ctx.file = "<internal>";
6317 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
6318 parser->nil->cvq = CV_CONST;
6319 if (OPTS_FLAG(UNTYPED_NIL))
6320 util_htset(parser->htglobals, "nil", (void*)parser->nil);
6322 parser->max_param_count = 1;
6324 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
6325 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
6326 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
6328 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
6329 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
6330 parser->reserved_version->cvq = CV_CONST;
6331 parser->reserved_version->hasvalue = true;
6332 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
6333 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
6335 parser->reserved_version = NULL;
6341 static bool parser_compile(parser_t *parser)
6343 /* initial lexer/parser state */
6344 parser->lex->flags.noops = true;
6346 if (parser_next(parser))
6348 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
6350 if (!parser_global_statement(parser)) {
6351 if (parser->tok == TOKEN_EOF)
6352 parseerror(parser, "unexpected end of file");
6353 else if (compile_errors)
6354 parseerror(parser, "there have been errors, bailing out");
6355 lex_close(parser->lex);
6361 parseerror(parser, "parse error");
6362 lex_close(parser->lex);
6367 lex_close(parser->lex);
6370 return !compile_errors;
6373 bool parser_compile_file(parser_t *parser, const char *filename)
6375 parser->lex = lex_open(filename);
6377 con_err("failed to open file \"%s\"\n", filename);
6380 return parser_compile(parser);
6383 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
6385 parser->lex = lex_open_string(str, len, name);
6387 con_err("failed to create lexer for string \"%s\"\n", name);
6390 return parser_compile(parser);
6393 static void parser_remove_ast(parser_t *parser)
6396 if (parser->ast_cleaned)
6398 parser->ast_cleaned = true;
6399 for (i = 0; i < vec_size(parser->accessors); ++i) {
6400 ast_delete(parser->accessors[i]->constval.vfunc);
6401 parser->accessors[i]->constval.vfunc = NULL;
6402 ast_delete(parser->accessors[i]);
6404 for (i = 0; i < vec_size(parser->functions); ++i) {
6405 ast_delete(parser->functions[i]);
6407 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6408 ast_delete(parser->imm_vector[i]);
6410 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6411 ast_delete(parser->imm_string[i]);
6413 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6414 ast_delete(parser->imm_float[i]);
6416 for (i = 0; i < vec_size(parser->fields); ++i) {
6417 ast_delete(parser->fields[i]);
6419 for (i = 0; i < vec_size(parser->globals); ++i) {
6420 ast_delete(parser->globals[i]);
6422 vec_free(parser->accessors);
6423 vec_free(parser->functions);
6424 vec_free(parser->imm_vector);
6425 vec_free(parser->imm_string);
6426 util_htdel(parser->ht_imm_string);
6427 vec_free(parser->imm_float);
6428 vec_free(parser->globals);
6429 vec_free(parser->fields);
6431 for (i = 0; i < vec_size(parser->variables); ++i)
6432 util_htdel(parser->variables[i]);
6433 vec_free(parser->variables);
6434 vec_free(parser->_blocklocals);
6435 vec_free(parser->_locals);
6438 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
6439 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
6441 vec_free(parser->correct_variables);
6442 vec_free(parser->correct_variables_score);
6444 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6445 ast_delete(parser->_typedefs[i]);
6446 vec_free(parser->_typedefs);
6447 for (i = 0; i < vec_size(parser->typedefs); ++i)
6448 util_htdel(parser->typedefs[i]);
6449 vec_free(parser->typedefs);
6450 vec_free(parser->_blocktypedefs);
6452 vec_free(parser->_block_ctx);
6454 vec_free(parser->labels);
6455 vec_free(parser->gotos);
6456 vec_free(parser->breaks);
6457 vec_free(parser->continues);
6459 ast_value_delete(parser->nil);
6461 ast_value_delete(parser->const_vec[0]);
6462 ast_value_delete(parser->const_vec[1]);
6463 ast_value_delete(parser->const_vec[2]);
6465 if (parser->reserved_version)
6466 ast_value_delete(parser->reserved_version);
6468 util_htdel(parser->aliases);
6469 intrin_intrinsics_destroy(parser);
6472 void parser_cleanup(parser_t *parser)
6474 parser_remove_ast(parser);
6475 code_cleanup(parser->code);
6480 bool parser_finish(parser_t *parser, const char *output)
6486 if (compile_errors) {
6487 con_out("*** there were compile errors\n");
6491 ir = ir_builder_new("gmqcc_out");
6493 con_out("failed to allocate builder\n");
6497 for (i = 0; i < vec_size(parser->fields); ++i) {
6500 if (!ast_istype(parser->fields[i], ast_value))
6502 field = (ast_value*)parser->fields[i];
6503 hasvalue = field->hasvalue;
6504 field->hasvalue = false;
6505 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6506 con_out("failed to generate field %s\n", field->name);
6507 ir_builder_delete(ir);
6512 ast_expression *subtype;
6513 field->hasvalue = true;
6514 subtype = field->expression.next;
6515 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6516 if (subtype->vtype == TYPE_FIELD)
6517 ifld->fieldtype = subtype->next->vtype;
6518 else if (subtype->vtype == TYPE_FUNCTION)
6519 ifld->outtype = subtype->next->vtype;
6520 (void)!ir_value_set_field(field->ir_v, ifld);
6523 for (i = 0; i < vec_size(parser->globals); ++i) {
6525 if (!ast_istype(parser->globals[i], ast_value))
6527 asvalue = (ast_value*)(parser->globals[i]);
6528 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6529 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6530 "unused global: `%s`", asvalue->name);
6532 if (!ast_global_codegen(asvalue, ir, false)) {
6533 con_out("failed to generate global %s\n", asvalue->name);
6534 ir_builder_delete(ir);
6538 /* Build function vararg accessor ast tree now before generating
6539 * immediates, because the accessors may add new immediates
6541 for (i = 0; i < vec_size(parser->functions); ++i) {
6542 ast_function *f = parser->functions[i];
6544 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6545 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6546 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6547 con_out("failed to generate vararg setter for %s\n", f->name);
6548 ir_builder_delete(ir);
6551 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6552 con_out("failed to generate vararg getter for %s\n", f->name);
6553 ir_builder_delete(ir);
6557 ast_delete(f->varargs);
6562 /* Now we can generate immediates */
6563 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6564 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
6565 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
6566 ir_builder_delete(ir);
6570 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6571 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
6572 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
6573 ir_builder_delete(ir);
6577 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6578 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
6579 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
6580 ir_builder_delete(ir);
6584 for (i = 0; i < vec_size(parser->globals); ++i) {
6586 if (!ast_istype(parser->globals[i], ast_value))
6588 asvalue = (ast_value*)(parser->globals[i]);
6589 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6591 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6592 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6593 "uninitialized constant: `%s`",
6595 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6596 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6597 "uninitialized global: `%s`",
6600 if (!ast_generate_accessors(asvalue, ir)) {
6601 ir_builder_delete(ir);
6605 for (i = 0; i < vec_size(parser->fields); ++i) {
6607 asvalue = (ast_value*)(parser->fields[i]->next);
6609 if (!ast_istype((ast_expression*)asvalue, ast_value))
6611 if (asvalue->expression.vtype != TYPE_ARRAY)
6613 if (!ast_generate_accessors(asvalue, ir)) {
6614 ir_builder_delete(ir);
6618 if (parser->reserved_version &&
6619 !ast_global_codegen(parser->reserved_version, ir, false))
6621 con_out("failed to generate reserved::version");
6622 ir_builder_delete(ir);
6625 for (i = 0; i < vec_size(parser->functions); ++i) {
6626 ast_function *f = parser->functions[i];
6627 if (!ast_function_codegen(f, ir)) {
6628 con_out("failed to generate function %s\n", f->name);
6629 ir_builder_delete(ir);
6634 generate_checksum(parser);
6635 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6636 ir_builder_dump(ir, con_out);
6637 for (i = 0; i < vec_size(parser->functions); ++i) {
6638 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6639 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6640 ir_builder_delete(ir);
6644 parser_remove_ast(parser);
6646 if (compile_Werrors) {
6647 con_out("*** there were warnings treated as errors\n");
6648 compile_show_werrors();
6653 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6654 ir_builder_dump(ir, con_out);
6656 if (!ir_builder_generate(parser->code, ir, output)) {
6657 con_out("*** failed to generate output file\n");
6658 ir_builder_delete(ir);
6662 ir_builder_delete(ir);