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 for (i = 0; i < operator_count; ++i) {
1814 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1815 parser->tok = TOKEN_OPERATOR;
1821 static ast_expression* parse_vararg_do(parser_t *parser)
1823 ast_expression *idx, *out;
1825 ast_value *funtype = parser->function->vtype;
1826 lex_ctx ctx = parser_ctx(parser);
1828 if (!parser->function->varargs) {
1829 parseerror(parser, "function has no variable argument list");
1833 if (!parser_next(parser) || parser->tok != '(') {
1834 parseerror(parser, "expected parameter index and type in parenthesis");
1837 if (!parser_next(parser)) {
1838 parseerror(parser, "error parsing parameter index");
1842 idx = parse_expression_leave(parser, true, false, false);
1846 if (parser->tok != ',') {
1847 if (parser->tok != ')') {
1849 parseerror(parser, "expected comma after parameter index");
1852 /* vararg piping: ...(start) */
1853 out = (ast_expression*)ast_argpipe_new(ctx, idx);
1857 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1859 parseerror(parser, "expected typename for vararg");
1863 typevar = parse_typename(parser, NULL, NULL);
1869 if (parser->tok != ')') {
1871 ast_delete(typevar);
1872 parseerror(parser, "expected closing paren");
1876 if (funtype->expression.varparam &&
1877 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1881 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1882 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1883 compile_error(ast_ctx(typevar),
1884 "function was declared to take varargs of type `%s`, requested type is: %s",
1888 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1889 ast_type_adopt(out, typevar);
1890 ast_delete(typevar);
1894 static ast_expression* parse_vararg(parser_t *parser)
1896 bool old_noops = parser->lex->flags.noops;
1898 ast_expression *out;
1900 parser->lex->flags.noops = true;
1901 out = parse_vararg_do(parser);
1903 parser->lex->flags.noops = old_noops;
1907 /* not to be exposed */
1908 extern bool ftepp_predef_exists(const char *name);
1910 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1912 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1913 parser->tok == TOKEN_IDENT &&
1914 !strcmp(parser_tokval(parser), "_"))
1916 /* a translatable string */
1919 parser->lex->flags.noops = true;
1920 if (!parser_next(parser) || parser->tok != '(') {
1921 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1924 parser->lex->flags.noops = false;
1925 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1926 parseerror(parser, "expected a constant string in translatable-string extension");
1929 val = parser_const_string(parser, parser_tokval(parser), true);
1932 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1934 if (!parser_next(parser) || parser->tok != ')') {
1935 parseerror(parser, "expected closing paren after translatable string");
1940 else if (parser->tok == TOKEN_DOTS)
1943 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1944 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1947 va = parse_vararg(parser);
1950 vec_push(sy->out, syexp(parser_ctx(parser), va));
1953 else if (parser->tok == TOKEN_FLOATCONST) {
1955 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1958 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1961 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1963 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1966 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1969 else if (parser->tok == TOKEN_STRINGCONST) {
1971 val = parser_const_string(parser, parser_tokval(parser), false);
1974 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1977 else if (parser->tok == TOKEN_VECTORCONST) {
1979 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1982 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1985 else if (parser->tok == TOKEN_IDENT)
1987 const char *ctoken = parser_tokval(parser);
1988 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1989 ast_expression *var;
1990 /* a_vector.{x,y,z} */
1991 if (!vec_size(sy->ops) ||
1992 !vec_last(sy->ops).etype ||
1993 operators[vec_last(sy->ops).etype-1].id != opid1('.') ||
1994 (prev >= intrinsic_debug_typestring &&
1995 prev <= intrinsic_debug_typestring))
1997 /* When adding more intrinsics, fix the above condition */
2000 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
2002 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
2004 var = parser_find_var(parser, parser_tokval(parser));
2006 var = parser_find_field(parser, parser_tokval(parser));
2008 if (!var && with_labels) {
2009 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
2011 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
2012 var = (ast_expression*)lbl;
2013 vec_push(parser->labels, lbl);
2016 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
2017 var = (ast_expression*)parser_const_string(parser, parser->function->name, false);
2020 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
2021 var = (ast_expression*)intrinsic_debug_typestring;
2023 /* now we try for the real intrinsic hashtable. If the string
2024 * begins with __builtin, we simply skip past it, otherwise we
2025 * use the identifier as is.
2027 else if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
2028 var = intrin_func(parser, parser_tokval(parser) + 10 /* skip __builtin */);
2032 char *correct = NULL;
2036 * sometimes people use preprocessing predefs without enabling them
2037 * i've done this thousands of times already myself. Lets check for
2038 * it in the predef table. And diagnose it better :)
2040 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
2041 parseerror(parser, "unexpected identifier: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
2046 * TODO: determine the best score for the identifier: be it
2047 * a variable, a field.
2049 * We should also consider adding correction tables for
2050 * other things as well.
2052 if (OPTS_OPTION_BOOL(OPTION_CORRECTION) && strlen(parser_tokval(parser)) <= 16) {
2054 correct_init(&corr);
2056 for (i = 0; i < vec_size(parser->correct_variables); i++) {
2057 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
2058 if (strcmp(correct, parser_tokval(parser))) {
2060 } else if (correct) {
2065 correct_free(&corr);
2068 parseerror(parser, "unexpected identifier: %s (did you mean %s?)", parser_tokval(parser), correct);
2073 parseerror(parser, "unexpected identifier: %s", parser_tokval(parser));
2079 if (ast_istype(var, ast_value)) {
2080 ((ast_value*)var)->uses++;
2082 else if (ast_istype(var, ast_member)) {
2083 ast_member *mem = (ast_member*)var;
2084 if (ast_istype(mem->owner, ast_value))
2085 ((ast_value*)(mem->owner))->uses++;
2088 vec_push(sy->out, syexp(parser_ctx(parser), var));
2091 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
2095 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
2097 ast_expression *expr = NULL;
2100 bool wantop = false;
2101 /* only warn once about an assignment in a truth value because the current code
2102 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
2104 bool warn_truthvalue = true;
2106 /* count the parens because an if starts with one, so the
2107 * end of a condition is an unmatched closing paren
2111 memset(&sy, 0, sizeof(sy));
2113 parser->lex->flags.noops = false;
2115 parser_reclassify_token(parser);
2119 if (parser->tok == TOKEN_TYPENAME) {
2120 parseerror(parser, "unexpected typename `%s`", parser_tokval(parser));
2124 if (parser->tok == TOKEN_OPERATOR)
2126 /* classify the operator */
2127 const oper_info *op;
2128 const oper_info *olast = NULL;
2130 for (o = 0; o < operator_count; ++o) {
2131 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
2132 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
2133 !strcmp(parser_tokval(parser), operators[o].op))
2138 if (o == operator_count) {
2139 compile_error(parser_ctx(parser), "unknown operator: %s", parser_tokval(parser));
2142 /* found an operator */
2145 /* when declaring variables, a comma starts a new variable */
2146 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
2147 /* fixup the token */
2152 /* a colon without a pervious question mark cannot be a ternary */
2153 if (!ternaries && op->id == opid2(':','?')) {
2158 if (op->id == opid1(',')) {
2159 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2160 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
2164 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2165 olast = &operators[vec_last(sy.ops).etype-1];
2167 #define IsAssignOp(x) (\
2168 (x) == opid1('=') || \
2169 (x) == opid2('+','=') || \
2170 (x) == opid2('-','=') || \
2171 (x) == opid2('*','=') || \
2172 (x) == opid2('/','=') || \
2173 (x) == opid2('%','=') || \
2174 (x) == opid2('&','=') || \
2175 (x) == opid2('|','=') || \
2176 (x) == opid3('&','~','=') \
2178 if (warn_truthvalue) {
2179 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
2180 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
2181 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
2184 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
2185 warn_truthvalue = false;
2190 (op->prec < olast->prec) ||
2191 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
2193 if (!parser_sy_apply_operator(parser, &sy))
2195 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
2196 olast = &operators[vec_last(sy.ops).etype-1];
2201 if (op->id == opid1('(')) {
2203 size_t sycount = vec_size(sy.out);
2204 /* we expected an operator, this is the function-call operator */
2205 vec_push(sy.paren, PAREN_FUNC);
2206 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
2207 vec_push(sy.argc, 0);
2209 vec_push(sy.paren, PAREN_EXPR);
2210 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2213 } else if (op->id == opid1('[')) {
2215 parseerror(parser, "unexpected array subscript");
2218 vec_push(sy.paren, PAREN_INDEX);
2219 /* push both the operator and the paren, this makes life easier */
2220 vec_push(sy.ops, syop(parser_ctx(parser), op));
2221 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2223 } else if (op->id == opid2('?',':')) {
2224 vec_push(sy.ops, syop(parser_ctx(parser), op));
2225 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
2228 vec_push(sy.paren, PAREN_TERNARY1);
2229 } else if (op->id == opid2(':','?')) {
2230 if (!vec_size(sy.paren)) {
2231 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2234 if (vec_last(sy.paren) != PAREN_TERNARY1) {
2235 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2238 if (!parser_close_paren(parser, &sy))
2240 vec_push(sy.ops, syop(parser_ctx(parser), op));
2244 vec_push(sy.ops, syop(parser_ctx(parser), op));
2245 wantop = !!(op->flags & OP_SUFFIX);
2248 else if (parser->tok == ')') {
2249 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2250 if (!parser_sy_apply_operator(parser, &sy))
2253 if (!vec_size(sy.paren))
2256 if (vec_last(sy.paren) == PAREN_TERNARY1) {
2257 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
2260 if (!parser_close_paren(parser, &sy))
2263 /* must be a function call without parameters */
2264 if (vec_last(sy.paren) != PAREN_FUNC) {
2265 parseerror(parser, "closing paren in invalid position");
2268 if (!parser_close_paren(parser, &sy))
2273 else if (parser->tok == '(') {
2274 parseerror(parser, "internal error: '(' should be classified as operator");
2277 else if (parser->tok == '[') {
2278 parseerror(parser, "internal error: '[' should be classified as operator");
2281 else if (parser->tok == ']') {
2282 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2283 if (!parser_sy_apply_operator(parser, &sy))
2286 if (!vec_size(sy.paren))
2288 if (vec_last(sy.paren) != PAREN_INDEX) {
2289 parseerror(parser, "mismatched parentheses, unexpected ']'");
2292 if (!parser_close_paren(parser, &sy))
2297 if (!parse_sya_operand(parser, &sy, with_labels))
2300 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
2301 vec_last(sy.argc)++;
2306 /* in this case we might want to allow constant string concatenation */
2307 bool concatenated = false;
2308 if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
2309 ast_expression *lexpr = vec_last(sy.out).out;
2310 if (ast_istype(lexpr, ast_value)) {
2311 ast_value *last = (ast_value*)lexpr;
2312 if (last->isimm == true && last->cvq == CV_CONST &&
2313 last->hasvalue && last->expression.vtype == TYPE_STRING)
2315 char *newstr = NULL;
2316 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
2317 vec_last(sy.out).out = (ast_expression*)parser_const_string(parser, newstr, false);
2319 concatenated = true;
2323 if (!concatenated) {
2324 parseerror(parser, "expected operator or end of statement");
2329 if (!parser_next(parser)) {
2332 if (parser->tok == ';' ||
2333 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
2334 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
2340 while (vec_size(sy.ops)) {
2341 if (!parser_sy_apply_operator(parser, &sy))
2345 parser->lex->flags.noops = true;
2346 if (vec_size(sy.out) != 1) {
2347 parseerror(parser, "expression with not 1 but %lu output values...", (unsigned long) vec_size(sy.out));
2350 expr = sy.out[0].out;
2353 if (vec_size(sy.paren)) {
2354 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
2362 parser->lex->flags.noops = true;
2363 for (i = 0; i < vec_size(sy.out); ++i) {
2365 ast_unref(sy.out[i].out);
2374 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
2376 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
2379 if (parser->tok != ';') {
2380 parseerror(parser, "semicolon expected after expression");
2384 if (!parser_next(parser)) {
2391 static void parser_enterblock(parser_t *parser)
2393 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2394 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2395 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2396 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2397 vec_push(parser->_block_ctx, parser_ctx(parser));
2400 vec_push(parser->correct_variables, correct_trie_new());
2401 vec_push(parser->correct_variables_score, NULL);
2404 static bool parser_leaveblock(parser_t *parser)
2407 size_t locals, typedefs;
2409 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2410 parseerror(parser, "internal error: parser_leaveblock with no block");
2414 util_htdel(vec_last(parser->variables));
2415 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2417 vec_pop(parser->variables);
2418 vec_pop(parser->correct_variables);
2419 vec_pop(parser->correct_variables_score);
2420 if (!vec_size(parser->_blocklocals)) {
2421 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2425 locals = vec_last(parser->_blocklocals);
2426 vec_pop(parser->_blocklocals);
2427 while (vec_size(parser->_locals) != locals) {
2428 ast_expression *e = vec_last(parser->_locals);
2429 ast_value *v = (ast_value*)e;
2430 vec_pop(parser->_locals);
2431 if (ast_istype(e, ast_value) && !v->uses) {
2432 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2437 typedefs = vec_last(parser->_blocktypedefs);
2438 while (vec_size(parser->_typedefs) != typedefs) {
2439 ast_delete(vec_last(parser->_typedefs));
2440 vec_pop(parser->_typedefs);
2442 util_htdel(vec_last(parser->typedefs));
2443 vec_pop(parser->typedefs);
2445 vec_pop(parser->_block_ctx);
2450 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2452 vec_push(parser->_locals, e);
2453 util_htset(vec_last(parser->variables), name, (void*)e);
2457 vec_last(parser->correct_variables),
2458 &vec_last(parser->correct_variables_score),
2463 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2465 vec_push(parser->globals, e);
2466 util_htset(parser->htglobals, name, e);
2470 parser->correct_variables[0],
2471 &parser->correct_variables_score[0],
2476 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2480 ast_expression *prev;
2482 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2484 ast_type_to_string(cond, ty, sizeof(ty));
2485 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2488 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2491 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2494 parseerror(parser, "internal error: failed to process condition");
2499 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2501 /* vector types need to be cast to true booleans */
2502 ast_binary *bin = (ast_binary*)cond;
2503 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2505 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2507 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2510 parseerror(parser, "internal error: failed to process condition");
2517 unary = (ast_unary*)cond;
2518 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2520 cond = unary->operand;
2521 unary->operand = NULL;
2524 unary = (ast_unary*)cond;
2528 parseerror(parser, "internal error: failed to process condition");
2530 if (ifnot) *_ifnot = !*_ifnot;
2534 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2537 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2540 lex_ctx ctx = parser_ctx(parser);
2542 (void)block; /* not touching */
2544 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2545 if (!parser_next(parser)) {
2546 parseerror(parser, "expected condition or 'not'");
2549 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2551 if (!parser_next(parser)) {
2552 parseerror(parser, "expected condition in parenthesis");
2556 if (parser->tok != '(') {
2557 parseerror(parser, "expected 'if' condition in parenthesis");
2560 /* parse into the expression */
2561 if (!parser_next(parser)) {
2562 parseerror(parser, "expected 'if' condition after opening paren");
2565 /* parse the condition */
2566 cond = parse_expression_leave(parser, false, true, false);
2570 if (parser->tok != ')') {
2571 parseerror(parser, "expected closing paren after 'if' condition");
2575 /* parse into the 'then' branch */
2576 if (!parser_next(parser)) {
2577 parseerror(parser, "expected statement for on-true branch of 'if'");
2581 if (!parse_statement_or_block(parser, &ontrue)) {
2586 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2587 /* check for an else */
2588 if (!strcmp(parser_tokval(parser), "else")) {
2589 /* parse into the 'else' branch */
2590 if (!parser_next(parser)) {
2591 parseerror(parser, "expected on-false branch after 'else'");
2596 if (!parse_statement_or_block(parser, &onfalse)) {
2603 cond = process_condition(parser, cond, &ifnot);
2605 if (ontrue) ast_delete(ontrue);
2606 if (onfalse) ast_delete(onfalse);
2611 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2613 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2614 *out = (ast_expression*)ifthen;
2618 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2619 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2624 /* skip the 'while' and get the body */
2625 if (!parser_next(parser)) {
2626 if (OPTS_FLAG(LOOP_LABELS))
2627 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2629 parseerror(parser, "expected 'while' condition in parenthesis");
2633 if (parser->tok == ':') {
2634 if (!OPTS_FLAG(LOOP_LABELS))
2635 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2636 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2637 parseerror(parser, "expected loop label");
2640 label = util_strdup(parser_tokval(parser));
2641 if (!parser_next(parser)) {
2643 parseerror(parser, "expected 'while' condition in parenthesis");
2648 if (parser->tok != '(') {
2649 parseerror(parser, "expected 'while' condition in parenthesis");
2653 vec_push(parser->breaks, label);
2654 vec_push(parser->continues, label);
2656 rv = parse_while_go(parser, block, out);
2659 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2660 parseerror(parser, "internal error: label stack corrupted");
2666 vec_pop(parser->breaks);
2667 vec_pop(parser->continues);
2672 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2675 ast_expression *cond, *ontrue;
2679 lex_ctx ctx = parser_ctx(parser);
2681 (void)block; /* not touching */
2683 /* parse into the expression */
2684 if (!parser_next(parser)) {
2685 parseerror(parser, "expected 'while' condition after opening paren");
2688 /* parse the condition */
2689 cond = parse_expression_leave(parser, false, true, false);
2693 if (parser->tok != ')') {
2694 parseerror(parser, "expected closing paren after 'while' condition");
2698 /* parse into the 'then' branch */
2699 if (!parser_next(parser)) {
2700 parseerror(parser, "expected while-loop body");
2704 if (!parse_statement_or_block(parser, &ontrue)) {
2709 cond = process_condition(parser, cond, &ifnot);
2714 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2715 *out = (ast_expression*)aloop;
2719 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2720 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2725 /* skip the 'do' and get the body */
2726 if (!parser_next(parser)) {
2727 if (OPTS_FLAG(LOOP_LABELS))
2728 parseerror(parser, "expected loop label or body");
2730 parseerror(parser, "expected loop body");
2734 if (parser->tok == ':') {
2735 if (!OPTS_FLAG(LOOP_LABELS))
2736 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2737 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2738 parseerror(parser, "expected loop label");
2741 label = util_strdup(parser_tokval(parser));
2742 if (!parser_next(parser)) {
2744 parseerror(parser, "expected loop body");
2749 vec_push(parser->breaks, label);
2750 vec_push(parser->continues, label);
2752 rv = parse_dowhile_go(parser, block, out);
2755 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2756 parseerror(parser, "internal error: label stack corrupted");
2762 vec_pop(parser->breaks);
2763 vec_pop(parser->continues);
2768 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2771 ast_expression *cond, *ontrue;
2775 lex_ctx ctx = parser_ctx(parser);
2777 (void)block; /* not touching */
2779 if (!parse_statement_or_block(parser, &ontrue))
2782 /* expect the "while" */
2783 if (parser->tok != TOKEN_KEYWORD ||
2784 strcmp(parser_tokval(parser), "while"))
2786 parseerror(parser, "expected 'while' and condition");
2791 /* skip the 'while' and check for opening paren */
2792 if (!parser_next(parser) || parser->tok != '(') {
2793 parseerror(parser, "expected 'while' condition in parenthesis");
2797 /* parse into the expression */
2798 if (!parser_next(parser)) {
2799 parseerror(parser, "expected 'while' condition after opening paren");
2803 /* parse the condition */
2804 cond = parse_expression_leave(parser, false, true, false);
2808 if (parser->tok != ')') {
2809 parseerror(parser, "expected closing paren after 'while' condition");
2815 if (!parser_next(parser) || parser->tok != ';') {
2816 parseerror(parser, "expected semicolon after condition");
2822 if (!parser_next(parser)) {
2823 parseerror(parser, "parse error");
2829 cond = process_condition(parser, cond, &ifnot);
2834 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2835 *out = (ast_expression*)aloop;
2839 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2840 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2845 /* skip the 'for' and check for opening paren */
2846 if (!parser_next(parser)) {
2847 if (OPTS_FLAG(LOOP_LABELS))
2848 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2850 parseerror(parser, "expected 'for' expressions in parenthesis");
2854 if (parser->tok == ':') {
2855 if (!OPTS_FLAG(LOOP_LABELS))
2856 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2857 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2858 parseerror(parser, "expected loop label");
2861 label = util_strdup(parser_tokval(parser));
2862 if (!parser_next(parser)) {
2864 parseerror(parser, "expected 'for' expressions in parenthesis");
2869 if (parser->tok != '(') {
2870 parseerror(parser, "expected 'for' expressions in parenthesis");
2874 vec_push(parser->breaks, label);
2875 vec_push(parser->continues, label);
2877 rv = parse_for_go(parser, block, out);
2880 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2881 parseerror(parser, "internal error: label stack corrupted");
2887 vec_pop(parser->breaks);
2888 vec_pop(parser->continues);
2892 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2895 ast_expression *initexpr, *cond, *increment, *ontrue;
2900 lex_ctx ctx = parser_ctx(parser);
2902 parser_enterblock(parser);
2909 /* parse into the expression */
2910 if (!parser_next(parser)) {
2911 parseerror(parser, "expected 'for' initializer after opening paren");
2916 if (parser->tok == TOKEN_IDENT)
2917 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2919 if (typevar || parser->tok == TOKEN_TYPENAME) {
2921 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
2922 if (parsewarning(parser, WARN_EXTENSIONS,
2923 "current standard does not allow variable declarations in for-loop initializers"))
2927 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2930 else if (parser->tok != ';')
2932 initexpr = parse_expression_leave(parser, false, false, false);
2937 /* move on to condition */
2938 if (parser->tok != ';') {
2939 parseerror(parser, "expected semicolon after for-loop initializer");
2942 if (!parser_next(parser)) {
2943 parseerror(parser, "expected for-loop condition");
2947 /* parse the condition */
2948 if (parser->tok != ';') {
2949 cond = parse_expression_leave(parser, false, true, false);
2954 /* move on to incrementor */
2955 if (parser->tok != ';') {
2956 parseerror(parser, "expected semicolon after for-loop initializer");
2959 if (!parser_next(parser)) {
2960 parseerror(parser, "expected for-loop condition");
2964 /* parse the incrementor */
2965 if (parser->tok != ')') {
2966 lex_ctx condctx = parser_ctx(parser);
2967 increment = parse_expression_leave(parser, false, false, false);
2970 if (!ast_side_effects(increment)) {
2971 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2977 if (parser->tok != ')') {
2978 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2981 /* parse into the 'then' branch */
2982 if (!parser_next(parser)) {
2983 parseerror(parser, "expected for-loop body");
2986 if (!parse_statement_or_block(parser, &ontrue))
2990 cond = process_condition(parser, cond, &ifnot);
2994 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2995 *out = (ast_expression*)aloop;
2997 if (!parser_leaveblock(parser)) {
3003 if (initexpr) ast_unref(initexpr);
3004 if (cond) ast_unref(cond);
3005 if (increment) ast_unref(increment);
3006 (void)!parser_leaveblock(parser);
3010 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
3012 ast_expression *exp = NULL;
3013 ast_expression *var = NULL;
3014 ast_return *ret = NULL;
3015 ast_value *retval = parser->function->return_value;
3016 ast_value *expected = parser->function->vtype;
3018 lex_ctx ctx = parser_ctx(parser);
3020 (void)block; /* not touching */
3022 if (!parser_next(parser)) {
3023 parseerror(parser, "expected return expression");
3027 /* return assignments */
3028 if (parser->tok == '=') {
3029 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
3030 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
3034 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
3036 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
3037 parseerror(parser, "invalid return type: `%s'", ty1);
3041 if (!parser_next(parser)) {
3042 parseerror(parser, "expected return assignment expression");
3046 if (!(exp = parse_expression_leave(parser, false, false, false)))
3049 /* prepare the return value */
3051 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
3052 ast_type_adopt(retval, expected->expression.next);
3053 parser->function->return_value = retval;
3056 if (!ast_compare_type(exp, (ast_expression*)retval)) {
3057 char ty1[1024], ty2[1024];
3058 ast_type_to_string(exp, ty1, sizeof(ty1));
3059 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
3060 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
3063 /* store to 'return' local variable */
3064 var = (ast_expression*)ast_store_new(
3066 type_store_instr[expected->expression.next->vtype],
3067 (ast_expression*)retval, exp);
3074 if (parser->tok != ';')
3075 parseerror(parser, "missing semicolon after return assignment");
3076 else if (!parser_next(parser))
3077 parseerror(parser, "parse error after return assignment");
3083 if (parser->tok != ';') {
3084 exp = parse_expression(parser, false, false);
3088 if (exp->vtype != TYPE_NIL &&
3089 exp->vtype != ((ast_expression*)expected)->next->vtype)
3091 parseerror(parser, "return with invalid expression");
3094 ret = ast_return_new(ctx, exp);
3100 if (!parser_next(parser))
3101 parseerror(parser, "parse error");
3103 if (!retval && expected->expression.next->vtype != TYPE_VOID)
3105 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
3107 ret = ast_return_new(ctx, (ast_expression*)retval);
3109 *out = (ast_expression*)ret;
3113 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
3116 unsigned int levels = 0;
3117 lex_ctx ctx = parser_ctx(parser);
3118 const char **loops = (is_continue ? parser->continues : parser->breaks);
3120 (void)block; /* not touching */
3121 if (!parser_next(parser)) {
3122 parseerror(parser, "expected semicolon or loop label");
3126 if (!vec_size(loops)) {
3128 parseerror(parser, "`continue` can only be used inside loops");
3130 parseerror(parser, "`break` can only be used inside loops or switches");
3133 if (parser->tok == TOKEN_IDENT) {
3134 if (!OPTS_FLAG(LOOP_LABELS))
3135 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3136 i = vec_size(loops);
3138 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
3141 parseerror(parser, "no such loop to %s: `%s`",
3142 (is_continue ? "continue" : "break out of"),
3143 parser_tokval(parser));
3148 if (!parser_next(parser)) {
3149 parseerror(parser, "expected semicolon");
3154 if (parser->tok != ';') {
3155 parseerror(parser, "expected semicolon");
3159 if (!parser_next(parser))
3160 parseerror(parser, "parse error");
3162 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
3166 /* returns true when it was a variable qualifier, false otherwise!
3167 * on error, cvq is set to CV_WRONG
3169 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
3171 bool had_const = false;
3172 bool had_var = false;
3173 bool had_noref = false;
3174 bool had_attrib = false;
3175 bool had_static = false;
3180 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
3182 /* parse an attribute */
3183 if (!parser_next(parser)) {
3184 parseerror(parser, "expected attribute after `[[`");
3188 if (!strcmp(parser_tokval(parser), "noreturn")) {
3189 flags |= AST_FLAG_NORETURN;
3190 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3191 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
3196 else if (!strcmp(parser_tokval(parser), "noref")) {
3198 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3199 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
3204 else if (!strcmp(parser_tokval(parser), "inline")) {
3205 flags |= AST_FLAG_INLINE;
3206 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3207 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
3212 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
3213 flags |= AST_FLAG_ALIAS;
3216 if (!parser_next(parser)) {
3217 parseerror(parser, "parse error in attribute");
3221 if (parser->tok == '(') {
3222 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
3223 parseerror(parser, "`alias` attribute missing parameter");
3227 *message = util_strdup(parser_tokval(parser));
3229 if (!parser_next(parser)) {
3230 parseerror(parser, "parse error in attribute");
3234 if (parser->tok != ')') {
3235 parseerror(parser, "`alias` attribute expected `)` after parameter");
3239 if (!parser_next(parser)) {
3240 parseerror(parser, "parse error in attribute");
3245 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3246 parseerror(parser, "`alias` attribute expected `]]`");
3250 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
3251 flags |= AST_FLAG_DEPRECATED;
3254 if (!parser_next(parser)) {
3255 parseerror(parser, "parse error in attribute");
3259 if (parser->tok == '(') {
3260 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
3261 parseerror(parser, "`deprecated` attribute missing parameter");
3265 *message = util_strdup(parser_tokval(parser));
3267 if (!parser_next(parser)) {
3268 parseerror(parser, "parse error in attribute");
3272 if(parser->tok != ')') {
3273 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
3277 if (!parser_next(parser)) {
3278 parseerror(parser, "parse error in attribute");
3283 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3284 parseerror(parser, "`deprecated` attribute expected `]]`");
3287 if (*message) mem_d(*message);
3295 /* Skip tokens until we hit a ]] */
3296 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
3297 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
3298 if (!parser_next(parser)) {
3299 parseerror(parser, "error inside attribute");
3306 else if (with_local && !strcmp(parser_tokval(parser), "static"))
3308 else if (!strcmp(parser_tokval(parser), "const"))
3310 else if (!strcmp(parser_tokval(parser), "var"))
3312 else if (with_local && !strcmp(parser_tokval(parser), "local"))
3314 else if (!strcmp(parser_tokval(parser), "noref"))
3316 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
3321 if (!parser_next(parser))
3331 *is_static = had_static;
3335 parseerror(parser, "parse error after variable qualifier");
3340 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
3341 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
3346 /* skip the 'while' and get the body */
3347 if (!parser_next(parser)) {
3348 if (OPTS_FLAG(LOOP_LABELS))
3349 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
3351 parseerror(parser, "expected 'switch' operand in parenthesis");
3355 if (parser->tok == ':') {
3356 if (!OPTS_FLAG(LOOP_LABELS))
3357 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3358 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3359 parseerror(parser, "expected loop label");
3362 label = util_strdup(parser_tokval(parser));
3363 if (!parser_next(parser)) {
3365 parseerror(parser, "expected 'switch' operand in parenthesis");
3370 if (parser->tok != '(') {
3371 parseerror(parser, "expected 'switch' operand in parenthesis");
3375 vec_push(parser->breaks, label);
3377 rv = parse_switch_go(parser, block, out);
3380 if (vec_last(parser->breaks) != label) {
3381 parseerror(parser, "internal error: label stack corrupted");
3387 vec_pop(parser->breaks);
3392 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3394 ast_expression *operand;
3397 ast_switch *switchnode;
3398 ast_switch_case swcase;
3401 bool noref, is_static;
3402 uint32_t qflags = 0;
3404 lex_ctx ctx = parser_ctx(parser);
3406 (void)block; /* not touching */
3409 /* parse into the expression */
3410 if (!parser_next(parser)) {
3411 parseerror(parser, "expected switch operand");
3414 /* parse the operand */
3415 operand = parse_expression_leave(parser, false, false, false);
3419 switchnode = ast_switch_new(ctx, operand);
3422 if (parser->tok != ')') {
3423 ast_delete(switchnode);
3424 parseerror(parser, "expected closing paren after 'switch' operand");
3428 /* parse over the opening paren */
3429 if (!parser_next(parser) || parser->tok != '{') {
3430 ast_delete(switchnode);
3431 parseerror(parser, "expected list of cases");
3435 if (!parser_next(parser)) {
3436 ast_delete(switchnode);
3437 parseerror(parser, "expected 'case' or 'default'");
3441 /* new block; allow some variables to be declared here */
3442 parser_enterblock(parser);
3445 if (parser->tok == TOKEN_IDENT)
3446 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3447 if (typevar || parser->tok == TOKEN_TYPENAME) {
3448 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3449 ast_delete(switchnode);
3454 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3456 if (cvq == CV_WRONG) {
3457 ast_delete(switchnode);
3460 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3461 ast_delete(switchnode);
3470 while (parser->tok != '}') {
3471 ast_block *caseblock;
3473 if (!strcmp(parser_tokval(parser), "case")) {
3474 if (!parser_next(parser)) {
3475 ast_delete(switchnode);
3476 parseerror(parser, "expected expression for case");
3479 swcase.value = parse_expression_leave(parser, false, false, false);
3480 if (!swcase.value) {
3481 ast_delete(switchnode);
3482 parseerror(parser, "expected expression for case");
3485 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3486 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3487 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3493 else if (!strcmp(parser_tokval(parser), "default")) {
3494 swcase.value = NULL;
3495 if (!parser_next(parser)) {
3496 ast_delete(switchnode);
3497 parseerror(parser, "expected colon");
3502 ast_delete(switchnode);
3503 parseerror(parser, "expected 'case' or 'default'");
3507 /* Now the colon and body */
3508 if (parser->tok != ':') {
3509 if (swcase.value) ast_unref(swcase.value);
3510 ast_delete(switchnode);
3511 parseerror(parser, "expected colon");
3515 if (!parser_next(parser)) {
3516 if (swcase.value) ast_unref(swcase.value);
3517 ast_delete(switchnode);
3518 parseerror(parser, "expected statements or case");
3521 caseblock = ast_block_new(parser_ctx(parser));
3523 if (swcase.value) ast_unref(swcase.value);
3524 ast_delete(switchnode);
3527 swcase.code = (ast_expression*)caseblock;
3528 vec_push(switchnode->cases, swcase);
3530 ast_expression *expr;
3531 if (parser->tok == '}')
3533 if (parser->tok == TOKEN_KEYWORD) {
3534 if (!strcmp(parser_tokval(parser), "case") ||
3535 !strcmp(parser_tokval(parser), "default"))
3540 if (!parse_statement(parser, caseblock, &expr, true)) {
3541 ast_delete(switchnode);
3546 if (!ast_block_add_expr(caseblock, expr)) {
3547 ast_delete(switchnode);
3553 parser_leaveblock(parser);
3556 if (parser->tok != '}') {
3557 ast_delete(switchnode);
3558 parseerror(parser, "expected closing paren of case list");
3561 if (!parser_next(parser)) {
3562 ast_delete(switchnode);
3563 parseerror(parser, "parse error after switch");
3566 *out = (ast_expression*)switchnode;
3570 /* parse computed goto sides */
3571 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3572 ast_expression *on_true;
3573 ast_expression *on_false;
3574 ast_expression *cond;
3579 if (ast_istype(*side, ast_ternary)) {
3580 ast_ternary *tern = (ast_ternary*)*side;
3581 on_true = parse_goto_computed(parser, &tern->on_true);
3582 on_false = parse_goto_computed(parser, &tern->on_false);
3584 if (!on_true || !on_false) {
3585 parseerror(parser, "expected label or expression in ternary");
3586 if (on_true) ast_unref(on_true);
3587 if (on_false) ast_unref(on_false);
3595 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3596 } else if (ast_istype(*side, ast_label)) {
3597 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3598 ast_goto_set_label(gt, ((ast_label*)*side));
3600 return (ast_expression*)gt;
3605 static bool parse_goto(parser_t *parser, ast_expression **out)
3607 ast_goto *gt = NULL;
3608 ast_expression *lbl;
3610 if (!parser_next(parser))
3613 if (parser->tok != TOKEN_IDENT) {
3614 ast_expression *expression;
3616 /* could be an expression i.e computed goto :-) */
3617 if (parser->tok != '(') {
3618 parseerror(parser, "expected label name after `goto`");
3622 /* failed to parse expression for goto */
3623 if (!(expression = parse_expression(parser, false, true)) ||
3624 !(*out = parse_goto_computed(parser, &expression))) {
3625 parseerror(parser, "invalid goto expression");
3626 ast_unref(expression);
3633 /* not computed goto */
3634 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3635 lbl = parser_find_label(parser, gt->name);
3637 if (!ast_istype(lbl, ast_label)) {
3638 parseerror(parser, "internal error: label is not an ast_label");
3642 ast_goto_set_label(gt, (ast_label*)lbl);
3645 vec_push(parser->gotos, gt);
3647 if (!parser_next(parser) || parser->tok != ';') {
3648 parseerror(parser, "semicolon expected after goto label");
3651 if (!parser_next(parser)) {
3652 parseerror(parser, "parse error after goto");
3656 *out = (ast_expression*)gt;
3660 static bool parse_skipwhite(parser_t *parser)
3663 if (!parser_next(parser))
3665 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3666 return parser->tok < TOKEN_ERROR;
3669 static bool parse_eol(parser_t *parser)
3671 if (!parse_skipwhite(parser))
3673 return parser->tok == TOKEN_EOL;
3676 static bool parse_pragma_do(parser_t *parser)
3678 if (!parser_next(parser) ||
3679 parser->tok != TOKEN_IDENT ||
3680 strcmp(parser_tokval(parser), "pragma"))
3682 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3685 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3686 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3690 if (!strcmp(parser_tokval(parser), "noref")) {
3691 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3692 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3695 parser->noref = !!parser_token(parser)->constval.i;
3696 if (!parse_eol(parser)) {
3697 parseerror(parser, "parse error after `noref` pragma");
3703 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3710 static bool parse_pragma(parser_t *parser)
3713 parser->lex->flags.preprocessing = true;
3714 parser->lex->flags.mergelines = true;
3715 rv = parse_pragma_do(parser);
3716 if (parser->tok != TOKEN_EOL) {
3717 parseerror(parser, "junk after pragma");
3720 parser->lex->flags.preprocessing = false;
3721 parser->lex->flags.mergelines = false;
3722 if (!parser_next(parser)) {
3723 parseerror(parser, "parse error after pragma");
3729 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3731 bool noref, is_static;
3733 uint32_t qflags = 0;
3734 ast_value *typevar = NULL;
3735 char *vstring = NULL;
3739 if (parser->tok == TOKEN_IDENT)
3740 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3742 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3744 /* local variable */
3746 parseerror(parser, "cannot declare a variable from here");
3749 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3750 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3753 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3757 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3759 if (cvq == CV_WRONG)
3761 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3763 else if (parser->tok == TOKEN_KEYWORD)
3765 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3770 if (!parser_next(parser)) {
3771 parseerror(parser, "parse error after __builtin_debug_printtype");
3775 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3777 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3778 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3779 if (!parser_next(parser)) {
3780 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3786 if (!parse_statement(parser, block, out, allow_cases))
3789 con_out("__builtin_debug_printtype: got no output node\n");
3792 ast_type_to_string(*out, ty, sizeof(ty));
3793 con_out("__builtin_debug_printtype: `%s`\n", ty);
3798 else if (!strcmp(parser_tokval(parser), "return"))
3800 return parse_return(parser, block, out);
3802 else if (!strcmp(parser_tokval(parser), "if"))
3804 return parse_if(parser, block, out);
3806 else if (!strcmp(parser_tokval(parser), "while"))
3808 return parse_while(parser, block, out);
3810 else if (!strcmp(parser_tokval(parser), "do"))
3812 return parse_dowhile(parser, block, out);
3814 else if (!strcmp(parser_tokval(parser), "for"))
3816 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3817 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3820 return parse_for(parser, block, out);
3822 else if (!strcmp(parser_tokval(parser), "break"))
3824 return parse_break_continue(parser, block, out, false);
3826 else if (!strcmp(parser_tokval(parser), "continue"))
3828 return parse_break_continue(parser, block, out, true);
3830 else if (!strcmp(parser_tokval(parser), "switch"))
3832 return parse_switch(parser, block, out);
3834 else if (!strcmp(parser_tokval(parser), "case") ||
3835 !strcmp(parser_tokval(parser), "default"))
3838 parseerror(parser, "unexpected 'case' label");
3843 else if (!strcmp(parser_tokval(parser), "goto"))
3845 return parse_goto(parser, out);
3847 else if (!strcmp(parser_tokval(parser), "typedef"))
3849 if (!parser_next(parser)) {
3850 parseerror(parser, "expected type definition after 'typedef'");
3853 return parse_typedef(parser);
3855 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3858 else if (parser->tok == '{')
3861 inner = parse_block(parser);
3864 *out = (ast_expression*)inner;
3867 else if (parser->tok == ':')
3871 if (!parser_next(parser)) {
3872 parseerror(parser, "expected label name");
3875 if (parser->tok != TOKEN_IDENT) {
3876 parseerror(parser, "label must be an identifier");
3879 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3881 if (!label->undefined) {
3882 parseerror(parser, "label `%s` already defined", label->name);
3885 label->undefined = false;
3888 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3889 vec_push(parser->labels, label);
3891 *out = (ast_expression*)label;
3892 if (!parser_next(parser)) {
3893 parseerror(parser, "parse error after label");
3896 for (i = 0; i < vec_size(parser->gotos); ++i) {
3897 if (!strcmp(parser->gotos[i]->name, label->name)) {
3898 ast_goto_set_label(parser->gotos[i], label);
3899 vec_remove(parser->gotos, i, 1);
3905 else if (parser->tok == ';')
3907 if (!parser_next(parser)) {
3908 parseerror(parser, "parse error after empty statement");
3915 lex_ctx ctx = parser_ctx(parser);
3916 ast_expression *exp = parse_expression(parser, false, false);
3920 if (!ast_side_effects(exp)) {
3921 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3928 static bool parse_enum(parser_t *parser)
3931 bool reverse = false;
3933 ast_value **values = NULL;
3934 ast_value *var = NULL;
3937 ast_expression *old;
3939 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3940 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3944 /* enumeration attributes (can add more later) */
3945 if (parser->tok == ':') {
3946 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3947 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3952 if (!strcmp(parser_tokval(parser), "flag")) {
3956 else if (!strcmp(parser_tokval(parser), "reverse")) {
3960 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3964 if (!parser_next(parser) || parser->tok != '{') {
3965 parseerror(parser, "expected `{` after enum attribute ");
3971 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3972 if (parser->tok == '}') {
3973 /* allow an empty enum */
3976 parseerror(parser, "expected identifier or `}`");
3980 old = parser_find_field(parser, parser_tokval(parser));
3982 old = parser_find_global(parser, parser_tokval(parser));
3984 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3985 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3989 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3990 vec_push(values, var);
3991 var->cvq = CV_CONST;
3992 var->hasvalue = true;
3994 /* for flagged enumerations increment in POTs of TWO */
3995 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3996 parser_addglobal(parser, var->name, (ast_expression*)var);
3998 if (!parser_next(parser)) {
3999 parseerror(parser, "expected `=`, `}` or comma after identifier");
4003 if (parser->tok == ',')
4005 if (parser->tok == '}')
4007 if (parser->tok != '=') {
4008 parseerror(parser, "expected `=`, `}` or comma after identifier");
4012 if (!parser_next(parser)) {
4013 parseerror(parser, "expected expression after `=`");
4017 /* We got a value! */
4018 old = parse_expression_leave(parser, true, false, false);
4019 asvalue = (ast_value*)old;
4020 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
4021 compile_error(ast_ctx(var), "constant value or expression expected");
4024 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
4026 if (parser->tok == '}')
4028 if (parser->tok != ',') {
4029 parseerror(parser, "expected `}` or comma after expression");
4034 /* patch them all (for reversed attribute) */
4037 for (i = 0; i < vec_size(values); i++)
4038 values[i]->constval.vfloat = vec_size(values) - i - 1;
4041 if (parser->tok != '}') {
4042 parseerror(parser, "internal error: breaking without `}`");
4046 if (!parser_next(parser) || parser->tok != ';') {
4047 parseerror(parser, "expected semicolon after enumeration");
4051 if (!parser_next(parser)) {
4052 parseerror(parser, "parse error after enumeration");
4064 static bool parse_block_into(parser_t *parser, ast_block *block)
4068 parser_enterblock(parser);
4070 if (!parser_next(parser)) { /* skip the '{' */
4071 parseerror(parser, "expected function body");
4075 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4077 ast_expression *expr = NULL;
4078 if (parser->tok == '}')
4081 if (!parse_statement(parser, block, &expr, false)) {
4082 /* parseerror(parser, "parse error"); */
4088 if (!ast_block_add_expr(block, expr)) {
4095 if (parser->tok != '}') {
4098 (void)parser_next(parser);
4102 if (!parser_leaveblock(parser))
4104 return retval && !!block;
4107 static ast_block* parse_block(parser_t *parser)
4110 block = ast_block_new(parser_ctx(parser));
4113 if (!parse_block_into(parser, block)) {
4114 ast_block_delete(block);
4120 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
4122 if (parser->tok == '{') {
4123 *out = (ast_expression*)parse_block(parser);
4126 return parse_statement(parser, NULL, out, false);
4129 static bool create_vector_members(ast_value *var, ast_member **me)
4132 size_t len = strlen(var->name);
4134 for (i = 0; i < 3; ++i) {
4135 char *name = (char*)mem_a(len+3);
4136 memcpy(name, var->name, len);
4138 name[len+1] = 'x'+i;
4140 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
4149 do { ast_member_delete(me[--i]); } while(i);
4153 static bool parse_function_body(parser_t *parser, ast_value *var)
4155 ast_block *block = NULL;
4160 ast_expression *framenum = NULL;
4161 ast_expression *nextthink = NULL;
4162 /* None of the following have to be deleted */
4163 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
4164 ast_expression *gbl_time = NULL, *gbl_self = NULL;
4165 bool has_frame_think;
4169 has_frame_think = false;
4170 old = parser->function;
4172 if (var->expression.flags & AST_FLAG_ALIAS) {
4173 parseerror(parser, "function aliases cannot have bodies");
4177 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
4178 parseerror(parser, "gotos/labels leaking");
4182 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4183 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
4184 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
4190 if (parser->tok == '[') {
4191 /* got a frame definition: [ framenum, nextthink ]
4192 * this translates to:
4193 * self.frame = framenum;
4194 * self.nextthink = time + 0.1;
4195 * self.think = nextthink;
4199 fld_think = parser_find_field(parser, "think");
4200 fld_nextthink = parser_find_field(parser, "nextthink");
4201 fld_frame = parser_find_field(parser, "frame");
4202 if (!fld_think || !fld_nextthink || !fld_frame) {
4203 parseerror(parser, "cannot use [frame,think] notation without the required fields");
4204 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
4207 gbl_time = parser_find_global(parser, "time");
4208 gbl_self = parser_find_global(parser, "self");
4209 if (!gbl_time || !gbl_self) {
4210 parseerror(parser, "cannot use [frame,think] notation without the required globals");
4211 parseerror(parser, "please declare the following globals: `time`, `self`");
4215 if (!parser_next(parser))
4218 framenum = parse_expression_leave(parser, true, false, false);
4220 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
4223 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
4224 ast_unref(framenum);
4225 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
4229 if (parser->tok != ',') {
4230 ast_unref(framenum);
4231 parseerror(parser, "expected comma after frame number in [frame,think] notation");
4232 parseerror(parser, "Got a %i\n", parser->tok);
4236 if (!parser_next(parser)) {
4237 ast_unref(framenum);
4241 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
4243 /* qc allows the use of not-yet-declared functions here
4244 * - this automatically creates a prototype */
4245 ast_value *thinkfunc;
4246 ast_expression *functype = fld_think->next;
4248 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
4249 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
4250 ast_unref(framenum);
4251 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
4254 ast_type_adopt(thinkfunc, functype);
4256 if (!parser_next(parser)) {
4257 ast_unref(framenum);
4258 ast_delete(thinkfunc);
4262 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
4264 nextthink = (ast_expression*)thinkfunc;
4267 nextthink = parse_expression_leave(parser, true, false, false);
4269 ast_unref(framenum);
4270 parseerror(parser, "expected a think-function in [frame,think] notation");
4275 if (!ast_istype(nextthink, ast_value)) {
4276 parseerror(parser, "think-function in [frame,think] notation must be a constant");
4280 if (retval && parser->tok != ']') {
4281 parseerror(parser, "expected closing `]` for [frame,think] notation");
4285 if (retval && !parser_next(parser)) {
4289 if (retval && parser->tok != '{') {
4290 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
4295 ast_unref(nextthink);
4296 ast_unref(framenum);
4300 has_frame_think = true;
4303 block = ast_block_new(parser_ctx(parser));
4305 parseerror(parser, "failed to allocate block");
4306 if (has_frame_think) {
4307 ast_unref(nextthink);
4308 ast_unref(framenum);
4313 if (has_frame_think) {
4315 ast_expression *self_frame;
4316 ast_expression *self_nextthink;
4317 ast_expression *self_think;
4318 ast_expression *time_plus_1;
4319 ast_store *store_frame;
4320 ast_store *store_nextthink;
4321 ast_store *store_think;
4323 ctx = parser_ctx(parser);
4324 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
4325 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
4326 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
4328 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
4329 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
4331 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
4332 if (self_frame) ast_delete(self_frame);
4333 if (self_nextthink) ast_delete(self_nextthink);
4334 if (self_think) ast_delete(self_think);
4335 if (time_plus_1) ast_delete(time_plus_1);
4341 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
4342 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
4343 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
4346 ast_delete(self_frame);
4349 if (!store_nextthink) {
4350 ast_delete(self_nextthink);
4354 ast_delete(self_think);
4358 if (store_frame) ast_delete(store_frame);
4359 if (store_nextthink) ast_delete(store_nextthink);
4360 if (store_think) ast_delete(store_think);
4363 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
4364 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
4365 !ast_block_add_expr(block, (ast_expression*)store_think))
4372 parseerror(parser, "failed to generate code for [frame,think]");
4373 ast_unref(nextthink);
4374 ast_unref(framenum);
4380 if (var->hasvalue) {
4381 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
4382 ast_block_delete(block);
4386 func = ast_function_new(ast_ctx(var), var->name, var);
4388 parseerror(parser, "failed to allocate function for `%s`", var->name);
4389 ast_block_delete(block);
4392 vec_push(parser->functions, func);
4394 parser_enterblock(parser);
4396 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
4398 ast_value *param = var->expression.params[parami];
4401 if (param->expression.vtype != TYPE_VECTOR &&
4402 (param->expression.vtype != TYPE_FIELD ||
4403 param->expression.next->vtype != TYPE_VECTOR))
4408 if (!create_vector_members(param, me)) {
4409 ast_block_delete(block);
4413 for (e = 0; e < 3; ++e) {
4414 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4415 ast_block_collect(block, (ast_expression*)me[e]);
4419 if (var->argcounter) {
4420 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4421 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4425 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4427 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4428 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4429 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4430 varargs->expression.count = 0;
4431 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4432 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4433 ast_delete(varargs);
4434 ast_block_delete(block);
4437 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4438 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4439 ast_delete(varargs);
4440 ast_block_delete(block);
4443 func->varargs = varargs;
4445 func->fixedparams = parser_const_float(parser, vec_size(var->expression.params));
4448 parser->function = func;
4449 if (!parse_block_into(parser, block)) {
4450 ast_block_delete(block);
4454 vec_push(func->blocks, block);
4457 parser->function = old;
4458 if (!parser_leaveblock(parser))
4460 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4461 parseerror(parser, "internal error: local scopes left");
4465 if (parser->tok == ';')
4466 return parser_next(parser);
4467 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4468 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4472 (void)!parser_leaveblock(parser);
4473 vec_pop(parser->functions);
4474 ast_function_delete(func);
4475 var->constval.vfunc = NULL;
4478 parser->function = old;
4482 static ast_expression *array_accessor_split(
4487 ast_expression *left,
4488 ast_expression *right
4494 lex_ctx ctx = ast_ctx(array);
4496 if (!left || !right) {
4497 if (left) ast_delete(left);
4498 if (right) ast_delete(right);
4502 cmp = ast_binary_new(ctx, INSTR_LT,
4503 (ast_expression*)index,
4504 (ast_expression*)parser_const_float(parser, middle));
4508 parseerror(parser, "internal error: failed to create comparison for array setter");
4512 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4514 ast_delete(cmp); /* will delete left and right */
4515 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4519 return (ast_expression*)ifthen;
4522 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4524 lex_ctx ctx = ast_ctx(array);
4526 if (from+1 == afterend) {
4527 /* set this value */
4530 ast_array_index *subscript;
4532 int assignop = type_store_instr[value->expression.vtype];
4534 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4535 assignop = INSTR_STORE_V;
4537 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4541 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4543 ast_delete(subscript);
4547 block = ast_block_new(ctx);
4553 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4558 ret = ast_return_new(ctx, NULL);
4564 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4569 return (ast_expression*)block;
4571 ast_expression *left, *right;
4572 size_t diff = afterend - from;
4573 size_t middle = from + diff/2;
4574 left = array_setter_node(parser, array, index, value, from, middle);
4575 right = array_setter_node(parser, array, index, value, middle, afterend);
4576 return array_accessor_split(parser, array, index, middle, left, right);
4580 static ast_expression *array_field_setter_node(
4589 lex_ctx ctx = ast_ctx(array);
4591 if (from+1 == afterend) {
4592 /* set this value */
4595 ast_entfield *entfield;
4596 ast_array_index *subscript;
4598 int assignop = type_storep_instr[value->expression.vtype];
4600 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4601 assignop = INSTR_STOREP_V;
4603 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4607 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4608 subscript->expression.vtype = TYPE_FIELD;
4610 entfield = ast_entfield_new_force(ctx,
4611 (ast_expression*)entity,
4612 (ast_expression*)subscript,
4613 (ast_expression*)subscript);
4615 ast_delete(subscript);
4619 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4621 ast_delete(entfield);
4625 block = ast_block_new(ctx);
4631 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4636 ret = ast_return_new(ctx, NULL);
4642 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4647 return (ast_expression*)block;
4649 ast_expression *left, *right;
4650 size_t diff = afterend - from;
4651 size_t middle = from + diff/2;
4652 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4653 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4654 return array_accessor_split(parser, array, index, middle, left, right);
4658 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4660 lex_ctx ctx = ast_ctx(array);
4662 if (from+1 == afterend) {
4664 ast_array_index *subscript;
4666 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4670 ret = ast_return_new(ctx, (ast_expression*)subscript);
4672 ast_delete(subscript);
4676 return (ast_expression*)ret;
4678 ast_expression *left, *right;
4679 size_t diff = afterend - from;
4680 size_t middle = from + diff/2;
4681 left = array_getter_node(parser, array, index, from, middle);
4682 right = array_getter_node(parser, array, index, middle, afterend);
4683 return array_accessor_split(parser, array, index, middle, left, right);
4687 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4689 ast_function *func = NULL;
4690 ast_value *fval = NULL;
4691 ast_block *body = NULL;
4693 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4695 parseerror(parser, "failed to create accessor function value");
4699 func = ast_function_new(ast_ctx(array), funcname, fval);
4702 parseerror(parser, "failed to create accessor function node");
4706 body = ast_block_new(ast_ctx(array));
4708 parseerror(parser, "failed to create block for array accessor");
4714 vec_push(func->blocks, body);
4717 vec_push(parser->accessors, fval);
4722 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4724 ast_value *index = NULL;
4725 ast_value *value = NULL;
4729 if (!ast_istype(array->expression.next, ast_value)) {
4730 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4734 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4736 func = fval->constval.vfunc;
4737 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4739 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4740 value = ast_value_copy((ast_value*)array->expression.next);
4742 if (!index || !value) {
4743 parseerror(parser, "failed to create locals for array accessor");
4746 (void)!ast_value_set_name(value, "value"); /* not important */
4747 vec_push(fval->expression.params, index);
4748 vec_push(fval->expression.params, value);
4750 array->setter = fval;
4753 if (index) ast_delete(index);
4754 if (value) ast_delete(value);
4760 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4762 ast_expression *root = NULL;
4763 root = array_setter_node(parser, array,
4764 array->setter->expression.params[0],
4765 array->setter->expression.params[1],
4766 0, array->expression.count);
4768 parseerror(parser, "failed to build accessor search tree");
4771 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4778 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4780 if (!parser_create_array_setter_proto(parser, array, funcname))
4782 return parser_create_array_setter_impl(parser, array);
4785 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4787 ast_expression *root = NULL;
4788 ast_value *entity = NULL;
4789 ast_value *index = NULL;
4790 ast_value *value = NULL;
4794 if (!ast_istype(array->expression.next, ast_value)) {
4795 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4799 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4801 func = fval->constval.vfunc;
4802 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4804 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4805 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4806 value = ast_value_copy((ast_value*)array->expression.next);
4807 if (!entity || !index || !value) {
4808 parseerror(parser, "failed to create locals for array accessor");
4811 (void)!ast_value_set_name(value, "value"); /* not important */
4812 vec_push(fval->expression.params, entity);
4813 vec_push(fval->expression.params, index);
4814 vec_push(fval->expression.params, value);
4816 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4818 parseerror(parser, "failed to build accessor search tree");
4822 array->setter = fval;
4823 return ast_block_add_expr(func->blocks[0], root);
4825 if (entity) ast_delete(entity);
4826 if (index) ast_delete(index);
4827 if (value) ast_delete(value);
4828 if (root) ast_delete(root);
4834 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4836 ast_value *index = NULL;
4840 /* NOTE: checking array->expression.next rather than elemtype since
4841 * for fields elemtype is a temporary fieldtype.
4843 if (!ast_istype(array->expression.next, ast_value)) {
4844 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4848 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4850 func = fval->constval.vfunc;
4851 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4853 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4856 parseerror(parser, "failed to create locals for array accessor");
4859 vec_push(fval->expression.params, index);
4861 array->getter = fval;
4864 if (index) ast_delete(index);
4870 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4872 ast_expression *root = NULL;
4874 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4876 parseerror(parser, "failed to build accessor search tree");
4879 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4886 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4888 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4890 return parser_create_array_getter_impl(parser, array);
4893 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4894 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4902 bool variadic = false;
4903 ast_value *varparam = NULL;
4904 char *argcounter = NULL;
4906 ctx = parser_ctx(parser);
4908 /* for the sake of less code we parse-in in this function */
4909 if (!parser_next(parser)) {
4911 parseerror(parser, "expected parameter list");
4917 /* parse variables until we hit a closing paren */
4918 while (parser->tok != ')') {
4920 /* there must be commas between them */
4921 if (parser->tok != ',') {
4922 parseerror(parser, "expected comma or end of parameter list");
4925 if (!parser_next(parser)) {
4926 parseerror(parser, "expected parameter");
4932 if (parser->tok == TOKEN_DOTS) {
4933 /* '...' indicates a varargs function */
4935 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4936 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4939 if (parser->tok == TOKEN_IDENT) {
4940 argcounter = util_strdup(parser_tokval(parser));
4941 if (!parser_next(parser) || parser->tok != ')') {
4942 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4949 /* for anything else just parse a typename */
4950 param = parse_typename(parser, NULL, NULL);
4953 vec_push(params, param);
4954 if (param->expression.vtype >= TYPE_VARIANT) {
4955 char tname[1024]; /* typename is reserved in C++ */
4956 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4957 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4960 /* type-restricted varargs */
4961 if (parser->tok == TOKEN_DOTS) {
4963 varparam = vec_last(params);
4965 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4966 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4969 if (parser->tok == TOKEN_IDENT) {
4970 argcounter = util_strdup(parser_tokval(parser));
4971 if (!parser_next(parser) || parser->tok != ')') {
4972 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4980 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4984 if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4985 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4988 if (!parser_next(parser)) {
4989 parseerror(parser, "parse error after typename");
4993 /* now turn 'var' into a function type */
4994 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4995 fval->expression.next = (ast_expression*)var;
4997 fval->expression.flags |= AST_FLAG_VARIADIC;
5000 var->expression.params = params;
5001 var->expression.varparam = (ast_expression*)varparam;
5002 var->argcounter = argcounter;
5011 ast_delete(varparam);
5013 for (i = 0; i < vec_size(params); ++i)
5014 ast_delete(params[i]);
5019 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
5021 ast_expression *cexp;
5022 ast_value *cval, *tmp;
5025 ctx = parser_ctx(parser);
5027 if (!parser_next(parser)) {
5029 parseerror(parser, "expected array-size");
5033 if (parser->tok != ']') {
5034 cexp = parse_expression_leave(parser, true, false, false);
5036 if (!cexp || !ast_istype(cexp, ast_value)) {
5040 parseerror(parser, "expected array-size as constant positive integer");
5043 cval = (ast_value*)cexp;
5050 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
5051 tmp->expression.next = (ast_expression*)var;
5055 if (cval->expression.vtype == TYPE_INTEGER)
5056 tmp->expression.count = cval->constval.vint;
5057 else if (cval->expression.vtype == TYPE_FLOAT)
5058 tmp->expression.count = cval->constval.vfloat;
5062 parseerror(parser, "array-size must be a positive integer constant");
5068 var->expression.count = -1;
5069 var->expression.flags |= AST_FLAG_ARRAY_INIT;
5072 if (parser->tok != ']') {
5074 parseerror(parser, "expected ']' after array-size");
5077 if (!parser_next(parser)) {
5079 parseerror(parser, "error after parsing array size");
5085 /* Parse a complete typename.
5086 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
5087 * but when parsing variables separated by comma
5088 * 'storebase' should point to where the base-type should be kept.
5089 * The base type makes up every bit of type information which comes *before* the
5092 * The following will be parsed in its entirety:
5094 * The 'basetype' in this case is 'void()'
5095 * and if there's a comma after it, say:
5097 * then the type-information 'void()' can be stored in 'storebase'
5099 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
5101 ast_value *var, *tmp;
5104 const char *name = NULL;
5105 bool isfield = false;
5106 bool wasarray = false;
5107 size_t morefields = 0;
5109 ctx = parser_ctx(parser);
5111 /* types may start with a dot */
5112 if (parser->tok == '.') {
5114 /* if we parsed a dot we need a typename now */
5115 if (!parser_next(parser)) {
5116 parseerror(parser, "expected typename for field definition");
5120 /* Further dots are handled seperately because they won't be part of the
5123 while (parser->tok == '.') {
5125 if (!parser_next(parser)) {
5126 parseerror(parser, "expected typename for field definition");
5131 if (parser->tok == TOKEN_IDENT)
5132 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
5133 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
5134 parseerror(parser, "expected typename");
5138 /* generate the basic type value */
5139 if (cached_typedef) {
5140 var = ast_value_copy(cached_typedef);
5141 ast_value_set_name(var, "<type(from_def)>");
5143 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
5145 for (; morefields; --morefields) {
5146 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
5147 tmp->expression.next = (ast_expression*)var;
5151 /* do not yet turn into a field - remember:
5152 * .void() foo; is a field too
5153 * .void()() foo; is a function
5157 if (!parser_next(parser)) {
5159 parseerror(parser, "parse error after typename");
5163 /* an opening paren now starts the parameter-list of a function
5164 * this is where original-QC has parameter lists.
5165 * We allow a single parameter list here.
5166 * Much like fteqcc we don't allow `float()() x`
5168 if (parser->tok == '(') {
5169 var = parse_parameter_list(parser, var);
5174 /* store the base if requested */
5176 *storebase = ast_value_copy(var);
5178 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5179 tmp->expression.next = (ast_expression*)*storebase;
5184 /* there may be a name now */
5185 if (parser->tok == TOKEN_IDENT) {
5186 name = util_strdup(parser_tokval(parser));
5188 if (!parser_next(parser)) {
5191 parseerror(parser, "error after variable or field declaration");
5196 /* now this may be an array */
5197 if (parser->tok == '[') {
5199 var = parse_arraysize(parser, var);
5201 if (name) mem_d(name);
5206 /* This is the point where we can turn it into a field */
5208 /* turn it into a field if desired */
5209 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
5210 tmp->expression.next = (ast_expression*)var;
5214 /* now there may be function parens again */
5215 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5216 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5217 if (parser->tok == '(' && wasarray)
5218 parseerror(parser, "arrays as part of a return type is not supported");
5219 while (parser->tok == '(') {
5220 var = parse_parameter_list(parser, var);
5222 if (name) mem_d(name);
5227 /* finally name it */
5229 if (!ast_value_set_name(var, name)) {
5232 parseerror(parser, "internal error: failed to set name");
5235 /* free the name, ast_value_set_name duplicates */
5242 static bool parse_typedef(parser_t *parser)
5244 ast_value *typevar, *oldtype;
5245 ast_expression *old;
5247 typevar = parse_typename(parser, NULL, NULL);
5252 if ( (old = parser_find_var(parser, typevar->name)) ) {
5253 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
5254 " -> `%s` has been declared here: %s:%i",
5255 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
5256 ast_delete(typevar);
5260 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
5261 parseerror(parser, "type `%s` has already been declared here: %s:%i",
5262 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
5263 ast_delete(typevar);
5267 vec_push(parser->_typedefs, typevar);
5268 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
5270 if (parser->tok != ';') {
5271 parseerror(parser, "expected semicolon after typedef");
5274 if (!parser_next(parser)) {
5275 parseerror(parser, "parse error after typedef");
5282 static const char *cvq_to_str(int cvq) {
5284 case CV_NONE: return "none";
5285 case CV_VAR: return "`var`";
5286 case CV_CONST: return "`const`";
5287 default: return "<INVALID>";
5291 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
5294 if (proto->cvq != var->cvq) {
5295 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
5296 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5297 parser->tok == '='))
5299 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
5300 "`%s` declared with different qualifiers: %s\n"
5301 " -> previous declaration here: %s:%i uses %s",
5302 var->name, cvq_to_str(var->cvq),
5303 ast_ctx(proto).file, ast_ctx(proto).line,
5304 cvq_to_str(proto->cvq));
5307 av = (var ->expression.flags & AST_FLAG_NORETURN);
5308 ao = (proto->expression.flags & AST_FLAG_NORETURN);
5310 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
5311 "`%s` declared with different attributes%s\n"
5312 " -> previous declaration here: %s:%i",
5313 var->name, (av ? ": noreturn" : ""),
5314 ast_ctx(proto).file, ast_ctx(proto).line,
5315 (ao ? ": noreturn" : ""));
5320 static bool create_array_accessors(parser_t *parser, ast_value *var)
5323 util_snprintf(name, sizeof(name), "%s##SET", var->name);
5324 if (!parser_create_array_setter(parser, var, name))
5326 util_snprintf(name, sizeof(name), "%s##GET", var->name);
5327 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5332 static bool parse_array(parser_t *parser, ast_value *array)
5335 if (array->initlist) {
5336 parseerror(parser, "array already initialized elsewhere");
5339 if (!parser_next(parser)) {
5340 parseerror(parser, "parse error in array initializer");
5344 while (parser->tok != '}') {
5345 ast_value *v = (ast_value*)parse_expression_leave(parser, true, false, false);
5348 if (!ast_istype(v, ast_value) || !v->hasvalue || v->cvq != CV_CONST) {
5350 parseerror(parser, "initializing element must be a compile time constant");
5353 vec_push(array->initlist, v->constval);
5354 if (v->expression.vtype == TYPE_STRING) {
5355 array->initlist[i].vstring = util_strdupe(array->initlist[i].vstring);
5359 if (parser->tok == '}')
5361 if (parser->tok != ',' || !parser_next(parser)) {
5362 parseerror(parser, "expected comma or '}' in element list");
5366 if (!parser_next(parser) || parser->tok != ';') {
5367 parseerror(parser, "expected semicolon after initializer, got %s");
5371 if (!parser_next(parser)) {
5372 parseerror(parser, "parse error after initializer");
5377 if (array->expression.flags & AST_FLAG_ARRAY_INIT) {
5378 if (array->expression.count != (size_t)-1) {
5379 parseerror(parser, "array `%s' has already been initialized with %u elements",
5380 array->name, (unsigned)array->expression.count);
5382 array->expression.count = vec_size(array->initlist);
5383 if (!create_array_accessors(parser, array))
5389 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)
5393 ast_expression *old;
5397 ast_value *basetype = NULL;
5399 bool isparam = false;
5400 bool isvector = false;
5401 bool cleanvar = true;
5402 bool wasarray = false;
5404 ast_member *me[3] = { NULL, NULL, NULL };
5406 if (!localblock && is_static)
5407 parseerror(parser, "`static` qualifier is not supported in global scope");
5409 /* get the first complete variable */
5410 var = parse_typename(parser, &basetype, cached_typedef);
5413 ast_delete(basetype);
5421 /* Part 0: finish the type */
5422 if (parser->tok == '(') {
5423 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5424 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5425 var = parse_parameter_list(parser, var);
5431 /* we only allow 1-dimensional arrays */
5432 if (parser->tok == '[') {
5434 var = parse_arraysize(parser, var);
5440 if (parser->tok == '(' && wasarray) {
5441 parseerror(parser, "arrays as part of a return type is not supported");
5442 /* we'll still parse the type completely for now */
5444 /* for functions returning functions */
5445 while (parser->tok == '(') {
5446 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5447 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5448 var = parse_parameter_list(parser, var);
5455 var->cvq = qualifier;
5456 var->expression.flags |= qflags;
5459 * store the vstring back to var for alias and
5460 * deprecation messages.
5462 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5463 var->expression.flags & AST_FLAG_ALIAS)
5464 var->desc = vstring;
5467 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5468 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5469 * is then filled with the previous definition and the parameter-names replaced.
5471 if (!strcmp(var->name, "nil")) {
5472 if (OPTS_FLAG(UNTYPED_NIL)) {
5473 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5474 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5476 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5479 /* Deal with end_sys_ vars */
5481 if (!strcmp(var->name, "end_sys_globals")) {
5483 parser->crc_globals = vec_size(parser->globals);
5486 else if (!strcmp(var->name, "end_sys_fields")) {
5488 parser->crc_fields = vec_size(parser->fields);
5491 if (was_end && var->expression.vtype == TYPE_FIELD) {
5492 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5493 "global '%s' hint should not be a field",
5494 parser_tokval(parser)))
5501 if (!nofields && var->expression.vtype == TYPE_FIELD)
5503 /* deal with field declarations */
5504 old = parser_find_field(parser, var->name);
5506 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5507 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5516 parseerror(parser, "field `%s` already declared here: %s:%i",
5517 var->name, ast_ctx(old).file, ast_ctx(old).line);
5522 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5523 (old = parser_find_global(parser, var->name)))
5525 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5526 parseerror(parser, "field `%s` already declared here: %s:%i",
5527 var->name, ast_ctx(old).file, ast_ctx(old).line);
5534 /* deal with other globals */
5535 old = parser_find_global(parser, var->name);
5536 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5538 /* This is a function which had a prototype */
5539 if (!ast_istype(old, ast_value)) {
5540 parseerror(parser, "internal error: prototype is not an ast_value");
5544 proto = (ast_value*)old;
5545 proto->desc = var->desc;
5546 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5547 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5549 ast_ctx(proto).file, ast_ctx(proto).line);
5553 /* we need the new parameter-names */
5554 for (i = 0; i < vec_size(proto->expression.params); ++i)
5555 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5556 if (!parser_check_qualifiers(parser, var, proto)) {
5563 proto->expression.flags |= var->expression.flags;
5571 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5572 "global `%s` already declared here: %s:%i",
5573 var->name, ast_ctx(old).file, ast_ctx(old).line))
5578 proto = (ast_value*)old;
5579 if (!ast_istype(old, ast_value)) {
5580 parseerror(parser, "internal error: not an ast_value");
5585 if (!parser_check_qualifiers(parser, var, proto)) {
5590 proto->expression.flags |= var->expression.flags;
5594 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5595 (old = parser_find_field(parser, var->name)))
5597 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5598 parseerror(parser, "global `%s` already declared here: %s:%i",
5599 var->name, ast_ctx(old).file, ast_ctx(old).line);
5606 else /* it's not a global */
5608 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5609 if (old && !isparam) {
5610 parseerror(parser, "local `%s` already declared here: %s:%i",
5611 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5615 old = parser_find_local(parser, var->name, 0, &isparam);
5616 if (old && isparam) {
5617 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5618 "local `%s` is shadowing a parameter", var->name))
5620 parseerror(parser, "local `%s` already declared here: %s:%i",
5621 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5625 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5633 /* in a noref section we simply bump the usecount */
5634 if (noref || parser->noref)
5638 * Create the global/local, and deal with vector types.
5641 if (var->expression.vtype == TYPE_VECTOR)
5643 else if (var->expression.vtype == TYPE_FIELD &&
5644 var->expression.next->vtype == TYPE_VECTOR)
5648 if (!create_vector_members(var, me)) {
5655 /* deal with global variables, fields, functions */
5656 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5657 var->isfield = true;
5658 vec_push(parser->fields, (ast_expression*)var);
5659 util_htset(parser->htfields, var->name, var);
5661 for (i = 0; i < 3; ++i) {
5662 vec_push(parser->fields, (ast_expression*)me[i]);
5663 util_htset(parser->htfields, me[i]->name, me[i]);
5668 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5669 parser_addglobal(parser, var->name, (ast_expression*)var);
5671 for (i = 0; i < 3; ++i) {
5672 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5676 ast_expression *find = parser_find_global(parser, var->desc);
5679 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5683 if (var->expression.vtype != find->vtype) {
5687 ast_type_to_string(find, ty1, sizeof(ty1));
5688 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5690 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5697 * add alias to aliases table and to corrector
5698 * so corrections can apply for aliases as well.
5700 util_htset(parser->aliases, var->name, find);
5703 * add to corrector so corrections can work
5704 * even for aliases too.
5707 vec_last(parser->correct_variables),
5708 &vec_last(parser->correct_variables_score),
5712 /* generate aliases for vector components */
5716 util_asprintf(&buffer[0], "%s_x", var->desc);
5717 util_asprintf(&buffer[1], "%s_y", var->desc);
5718 util_asprintf(&buffer[2], "%s_z", var->desc);
5720 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5721 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5722 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5729 * add to corrector so corrections can work
5730 * even for aliases too.
5733 vec_last(parser->correct_variables),
5734 &vec_last(parser->correct_variables_score),
5738 vec_last(parser->correct_variables),
5739 &vec_last(parser->correct_variables_score),
5743 vec_last(parser->correct_variables),
5744 &vec_last(parser->correct_variables_score),
5752 /* a static adds itself to be generated like any other global
5753 * but is added to the local namespace instead
5755 char *defname = NULL;
5756 size_t prefix_len, ln;
5758 ln = strlen(parser->function->name);
5759 vec_append(defname, ln, parser->function->name);
5761 vec_append(defname, 2, "::");
5762 /* remember the length up to here */
5763 prefix_len = vec_size(defname);
5765 /* Add it to the local scope */
5766 util_htset(vec_last(parser->variables), var->name, (void*)var);
5770 vec_last(parser->correct_variables),
5771 &vec_last(parser->correct_variables_score),
5775 /* now rename the global */
5776 ln = strlen(var->name);
5777 vec_append(defname, ln, var->name);
5778 ast_value_set_name(var, defname);
5780 /* push it to the to-be-generated globals */
5781 vec_push(parser->globals, (ast_expression*)var);
5783 /* same game for the vector members */
5785 for (i = 0; i < 3; ++i) {
5786 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5790 vec_last(parser->correct_variables),
5791 &vec_last(parser->correct_variables_score),
5795 vec_shrinkto(defname, prefix_len);
5796 ln = strlen(me[i]->name);
5797 vec_append(defname, ln, me[i]->name);
5798 ast_member_set_name(me[i], defname);
5800 vec_push(parser->globals, (ast_expression*)me[i]);
5805 vec_push(localblock->locals, var);
5806 parser_addlocal(parser, var->name, (ast_expression*)var);
5808 for (i = 0; i < 3; ++i) {
5809 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5810 ast_block_collect(localblock, (ast_expression*)me[i]);
5816 me[0] = me[1] = me[2] = NULL;
5821 if (var->expression.vtype == TYPE_ARRAY) {
5822 if (var->expression.count != (size_t)-1) {
5823 if (!create_array_accessors(parser, var))
5827 else if (!localblock && !nofields &&
5828 var->expression.vtype == TYPE_FIELD &&
5829 var->expression.next->vtype == TYPE_ARRAY)
5832 ast_expression *telem;
5834 ast_value *array = (ast_value*)var->expression.next;
5836 if (!ast_istype(var->expression.next, ast_value)) {
5837 parseerror(parser, "internal error: field element type must be an ast_value");
5841 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5842 if (!parser_create_array_field_setter(parser, array, name))
5845 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5846 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5847 tfield->expression.next = telem;
5848 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5849 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5857 if (parser->tok == ';') {
5858 ast_delete(basetype);
5859 if (!parser_next(parser)) {
5860 parseerror(parser, "error after variable declaration");
5866 if (parser->tok == ',')
5870 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5873 parseerror(parser, "missing comma or semicolon while parsing variables");
5877 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5878 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5879 "initializing expression turns variable `%s` into a constant in this standard",
5886 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5887 if (parser->tok != '=') {
5888 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5892 if (!parser_next(parser)) {
5893 parseerror(parser, "error parsing initializer");
5897 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5898 parseerror(parser, "expected '=' before function body in this standard");
5901 if (parser->tok == '#') {
5902 ast_function *func = NULL;
5903 ast_value *number = NULL;
5909 parseerror(parser, "cannot declare builtins within functions");
5912 if (var->expression.vtype != TYPE_FUNCTION) {
5913 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5916 if (!parser_next(parser)) {
5917 parseerror(parser, "expected builtin number");
5921 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5922 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5924 parseerror(parser, "builtin number expected");
5927 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5930 parseerror(parser, "builtin number must be a compile time constant");
5933 if (number->expression.vtype == TYPE_INTEGER)
5934 builtin_num = number->constval.vint;
5935 else if (number->expression.vtype == TYPE_FLOAT)
5936 builtin_num = number->constval.vfloat;
5939 parseerror(parser, "builtin number must be an integer constant");
5944 fractional = modff(builtin_num, &integral);
5945 if (builtin_num < 0 || fractional != 0) {
5946 parseerror(parser, "builtin number must be an integer greater than zero");
5950 /* we only want the integral part anyways */
5951 builtin_num = integral;
5952 } else if (parser->tok == TOKEN_INTCONST) {
5953 builtin_num = parser_token(parser)->constval.i;
5955 parseerror(parser, "builtin number must be a compile time constant");
5959 if (var->hasvalue) {
5960 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5961 "builtin `%s` has already been defined\n"
5962 " -> previous declaration here: %s:%i",
5963 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5967 func = ast_function_new(ast_ctx(var), var->name, var);
5969 parseerror(parser, "failed to allocate function for `%s`", var->name);
5972 vec_push(parser->functions, func);
5974 func->builtin = -builtin_num-1;
5977 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5978 ? (parser->tok != ',' && parser->tok != ';')
5979 : (!parser_next(parser)))
5981 parseerror(parser, "expected comma or semicolon");
5983 ast_function_delete(func);
5984 var->constval.vfunc = NULL;
5988 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
5991 /* Note that fteqcc and most others don't even *have*
5992 * local arrays, so this is not a high priority.
5994 parseerror(parser, "TODO: initializers for local arrays");
5998 var->hasvalue = true;
5999 if (!parse_array(parser, var))
6002 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
6005 parseerror(parser, "cannot declare functions within functions");
6010 ast_ctx(proto) = parser_ctx(parser);
6012 if (!parse_function_body(parser, var))
6014 ast_delete(basetype);
6015 for (i = 0; i < vec_size(parser->gotos); ++i)
6016 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
6017 vec_free(parser->gotos);
6018 vec_free(parser->labels);
6021 ast_expression *cexp;
6024 cexp = parse_expression_leave(parser, true, false, false);
6029 cval = (ast_value*)cexp;
6030 if (cval != parser->nil &&
6031 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
6034 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
6038 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
6039 qualifier != CV_VAR)
6041 var->cvq = CV_CONST;
6043 if (cval == parser->nil)
6044 var->expression.flags |= AST_FLAG_INITIALIZED;
6047 var->hasvalue = true;
6048 if (cval->expression.vtype == TYPE_STRING)
6049 var->constval.vstring = parser_strdup(cval->constval.vstring);
6050 else if (cval->expression.vtype == TYPE_FIELD)
6051 var->constval.vfield = cval;
6053 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
6059 shunt sy = { NULL, NULL, NULL, NULL };
6062 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
6063 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
6064 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
6065 if (!parser_sy_apply_operator(parser, &sy))
6068 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
6069 parseerror(parser, "internal error: leaked operands");
6070 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
6081 if (parser->tok == ',') {
6082 if (!parser_next(parser)) {
6083 parseerror(parser, "expected another variable");
6087 if (parser->tok != TOKEN_IDENT) {
6088 parseerror(parser, "expected another variable");
6091 var = ast_value_copy(basetype);
6093 ast_value_set_name(var, parser_tokval(parser));
6094 if (!parser_next(parser)) {
6095 parseerror(parser, "error parsing variable declaration");
6101 if (parser->tok != ';') {
6102 parseerror(parser, "missing semicolon after variables");
6106 if (!parser_next(parser)) {
6107 parseerror(parser, "parse error after variable declaration");
6111 ast_delete(basetype);
6115 if (cleanvar && var)
6117 ast_delete(basetype);
6121 ast_delete(basetype);
6122 if (cleanvar && var)
6124 if (me[0]) ast_member_delete(me[0]);
6125 if (me[1]) ast_member_delete(me[1]);
6126 if (me[2]) ast_member_delete(me[2]);
6130 static bool parser_global_statement(parser_t *parser)
6134 bool is_static = false;
6135 uint32_t qflags = 0;
6136 ast_value *istype = NULL;
6137 char *vstring = NULL;
6139 if (parser->tok == TOKEN_IDENT)
6140 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
6142 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
6144 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
6146 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
6148 if (cvq == CV_WRONG)
6150 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
6152 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
6154 return parse_enum(parser);
6156 else if (parser->tok == TOKEN_KEYWORD)
6158 if (!strcmp(parser_tokval(parser), "typedef")) {
6159 if (!parser_next(parser)) {
6160 parseerror(parser, "expected type definition after 'typedef'");
6163 return parse_typedef(parser);
6165 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
6168 else if (parser->tok == '#')
6170 return parse_pragma(parser);
6172 else if (parser->tok == '$')
6174 if (!parser_next(parser)) {
6175 parseerror(parser, "parse error");
6181 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
6187 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
6189 return util_crc16(old, str, strlen(str));
6192 static void progdefs_crc_file(const char *str)
6194 /* write to progdefs.h here */
6198 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
6200 old = progdefs_crc_sum(old, str);
6201 progdefs_crc_file(str);
6205 static void generate_checksum(parser_t *parser)
6207 uint16_t crc = 0xFFFF;
6211 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
6212 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
6214 progdefs_crc_file("\tint\tpad;\n");
6215 progdefs_crc_file("\tint\tofs_return[3];\n");
6216 progdefs_crc_file("\tint\tofs_parm0[3];\n");
6217 progdefs_crc_file("\tint\tofs_parm1[3];\n");
6218 progdefs_crc_file("\tint\tofs_parm2[3];\n");
6219 progdefs_crc_file("\tint\tofs_parm3[3];\n");
6220 progdefs_crc_file("\tint\tofs_parm4[3];\n");
6221 progdefs_crc_file("\tint\tofs_parm5[3];\n");
6222 progdefs_crc_file("\tint\tofs_parm6[3];\n");
6223 progdefs_crc_file("\tint\tofs_parm7[3];\n");
6225 for (i = 0; i < parser->crc_globals; ++i) {
6226 if (!ast_istype(parser->globals[i], ast_value))
6228 value = (ast_value*)(parser->globals[i]);
6229 switch (value->expression.vtype) {
6230 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6231 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6232 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6233 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6235 crc = progdefs_crc_both(crc, "\tint\t");
6238 crc = progdefs_crc_both(crc, value->name);
6239 crc = progdefs_crc_both(crc, ";\n");
6241 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
6242 for (i = 0; i < parser->crc_fields; ++i) {
6243 if (!ast_istype(parser->fields[i], ast_value))
6245 value = (ast_value*)(parser->fields[i]);
6246 switch (value->expression.next->vtype) {
6247 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
6248 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
6249 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
6250 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
6252 crc = progdefs_crc_both(crc, "\tint\t");
6255 crc = progdefs_crc_both(crc, value->name);
6256 crc = progdefs_crc_both(crc, ";\n");
6258 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
6260 parser->code->crc = crc;
6263 parser_t *parser_create()
6269 parser = (parser_t*)mem_a(sizeof(parser_t));
6273 memset(parser, 0, sizeof(*parser));
6275 if (!(parser->code = code_init())) {
6280 for (i = 0; i < operator_count; ++i) {
6281 if (operators[i].id == opid1('=')) {
6282 parser->assign_op = operators+i;
6286 if (!parser->assign_op) {
6287 printf("internal error: initializing parser: failed to find assign operator\n");
6292 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
6293 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
6294 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
6295 vec_push(parser->_blocktypedefs, 0);
6297 parser->aliases = util_htnew(PARSER_HT_SIZE);
6299 parser->ht_imm_string = util_htnew(512);
6302 vec_push(parser->correct_variables, correct_trie_new());
6303 vec_push(parser->correct_variables_score, NULL);
6305 empty_ctx.file = "<internal>";
6307 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
6308 parser->nil->cvq = CV_CONST;
6309 if (OPTS_FLAG(UNTYPED_NIL))
6310 util_htset(parser->htglobals, "nil", (void*)parser->nil);
6312 parser->max_param_count = 1;
6314 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
6315 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
6316 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
6318 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
6319 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
6320 parser->reserved_version->cvq = CV_CONST;
6321 parser->reserved_version->hasvalue = true;
6322 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
6323 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
6325 parser->reserved_version = NULL;
6331 static bool parser_compile(parser_t *parser)
6333 /* initial lexer/parser state */
6334 parser->lex->flags.noops = true;
6336 if (parser_next(parser))
6338 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
6340 if (!parser_global_statement(parser)) {
6341 if (parser->tok == TOKEN_EOF)
6342 parseerror(parser, "unexpected end of file");
6343 else if (compile_errors)
6344 parseerror(parser, "there have been errors, bailing out");
6345 lex_close(parser->lex);
6351 parseerror(parser, "parse error");
6352 lex_close(parser->lex);
6357 lex_close(parser->lex);
6360 return !compile_errors;
6363 bool parser_compile_file(parser_t *parser, const char *filename)
6365 parser->lex = lex_open(filename);
6367 con_err("failed to open file \"%s\"\n", filename);
6370 return parser_compile(parser);
6373 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
6375 parser->lex = lex_open_string(str, len, name);
6377 con_err("failed to create lexer for string \"%s\"\n", name);
6380 return parser_compile(parser);
6383 static void parser_remove_ast(parser_t *parser)
6386 if (parser->ast_cleaned)
6388 parser->ast_cleaned = true;
6389 for (i = 0; i < vec_size(parser->accessors); ++i) {
6390 ast_delete(parser->accessors[i]->constval.vfunc);
6391 parser->accessors[i]->constval.vfunc = NULL;
6392 ast_delete(parser->accessors[i]);
6394 for (i = 0; i < vec_size(parser->functions); ++i) {
6395 ast_delete(parser->functions[i]);
6397 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6398 ast_delete(parser->imm_vector[i]);
6400 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6401 ast_delete(parser->imm_string[i]);
6403 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6404 ast_delete(parser->imm_float[i]);
6406 for (i = 0; i < vec_size(parser->fields); ++i) {
6407 ast_delete(parser->fields[i]);
6409 for (i = 0; i < vec_size(parser->globals); ++i) {
6410 ast_delete(parser->globals[i]);
6412 vec_free(parser->accessors);
6413 vec_free(parser->functions);
6414 vec_free(parser->imm_vector);
6415 vec_free(parser->imm_string);
6416 util_htdel(parser->ht_imm_string);
6417 vec_free(parser->imm_float);
6418 vec_free(parser->globals);
6419 vec_free(parser->fields);
6421 for (i = 0; i < vec_size(parser->variables); ++i)
6422 util_htdel(parser->variables[i]);
6423 vec_free(parser->variables);
6424 vec_free(parser->_blocklocals);
6425 vec_free(parser->_locals);
6428 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
6429 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
6431 vec_free(parser->correct_variables);
6432 vec_free(parser->correct_variables_score);
6434 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6435 ast_delete(parser->_typedefs[i]);
6436 vec_free(parser->_typedefs);
6437 for (i = 0; i < vec_size(parser->typedefs); ++i)
6438 util_htdel(parser->typedefs[i]);
6439 vec_free(parser->typedefs);
6440 vec_free(parser->_blocktypedefs);
6442 vec_free(parser->_block_ctx);
6444 vec_free(parser->labels);
6445 vec_free(parser->gotos);
6446 vec_free(parser->breaks);
6447 vec_free(parser->continues);
6449 ast_value_delete(parser->nil);
6451 ast_value_delete(parser->const_vec[0]);
6452 ast_value_delete(parser->const_vec[1]);
6453 ast_value_delete(parser->const_vec[2]);
6455 if (parser->reserved_version)
6456 ast_value_delete(parser->reserved_version);
6458 util_htdel(parser->aliases);
6459 intrin_intrinsics_destroy(parser);
6462 void parser_cleanup(parser_t *parser)
6464 parser_remove_ast(parser);
6465 code_cleanup(parser->code);
6470 bool parser_finish(parser_t *parser, const char *output)
6476 if (compile_errors) {
6477 con_out("*** there were compile errors\n");
6481 ir = ir_builder_new("gmqcc_out");
6483 con_out("failed to allocate builder\n");
6487 for (i = 0; i < vec_size(parser->fields); ++i) {
6490 if (!ast_istype(parser->fields[i], ast_value))
6492 field = (ast_value*)parser->fields[i];
6493 hasvalue = field->hasvalue;
6494 field->hasvalue = false;
6495 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6496 con_out("failed to generate field %s\n", field->name);
6497 ir_builder_delete(ir);
6502 ast_expression *subtype;
6503 field->hasvalue = true;
6504 subtype = field->expression.next;
6505 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6506 if (subtype->vtype == TYPE_FIELD)
6507 ifld->fieldtype = subtype->next->vtype;
6508 else if (subtype->vtype == TYPE_FUNCTION)
6509 ifld->outtype = subtype->next->vtype;
6510 (void)!ir_value_set_field(field->ir_v, ifld);
6513 for (i = 0; i < vec_size(parser->globals); ++i) {
6515 if (!ast_istype(parser->globals[i], ast_value))
6517 asvalue = (ast_value*)(parser->globals[i]);
6518 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6519 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6520 "unused global: `%s`", asvalue->name);
6522 if (!ast_global_codegen(asvalue, ir, false)) {
6523 con_out("failed to generate global %s\n", asvalue->name);
6524 ir_builder_delete(ir);
6528 /* Build function vararg accessor ast tree now before generating
6529 * immediates, because the accessors may add new immediates
6531 for (i = 0; i < vec_size(parser->functions); ++i) {
6532 ast_function *f = parser->functions[i];
6534 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
6535 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
6536 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6537 con_out("failed to generate vararg setter for %s\n", f->name);
6538 ir_builder_delete(ir);
6541 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6542 con_out("failed to generate vararg getter for %s\n", f->name);
6543 ir_builder_delete(ir);
6547 ast_delete(f->varargs);
6552 /* Now we can generate immediates */
6553 for (i = 0; i < vec_size(parser->imm_float); ++i) {
6554 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
6555 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
6556 ir_builder_delete(ir);
6560 for (i = 0; i < vec_size(parser->imm_string); ++i) {
6561 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
6562 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
6563 ir_builder_delete(ir);
6567 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
6568 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
6569 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
6570 ir_builder_delete(ir);
6574 for (i = 0; i < vec_size(parser->globals); ++i) {
6576 if (!ast_istype(parser->globals[i], ast_value))
6578 asvalue = (ast_value*)(parser->globals[i]);
6579 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6581 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6582 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6583 "uninitialized constant: `%s`",
6585 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6586 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6587 "uninitialized global: `%s`",
6590 if (!ast_generate_accessors(asvalue, ir)) {
6591 ir_builder_delete(ir);
6595 for (i = 0; i < vec_size(parser->fields); ++i) {
6597 asvalue = (ast_value*)(parser->fields[i]->next);
6599 if (!ast_istype((ast_expression*)asvalue, ast_value))
6601 if (asvalue->expression.vtype != TYPE_ARRAY)
6603 if (!ast_generate_accessors(asvalue, ir)) {
6604 ir_builder_delete(ir);
6608 if (parser->reserved_version &&
6609 !ast_global_codegen(parser->reserved_version, ir, false))
6611 con_out("failed to generate reserved::version");
6612 ir_builder_delete(ir);
6615 for (i = 0; i < vec_size(parser->functions); ++i) {
6616 ast_function *f = parser->functions[i];
6617 if (!ast_function_codegen(f, ir)) {
6618 con_out("failed to generate function %s\n", f->name);
6619 ir_builder_delete(ir);
6624 generate_checksum(parser);
6625 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6626 ir_builder_dump(ir, con_out);
6627 for (i = 0; i < vec_size(parser->functions); ++i) {
6628 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
6629 con_out("failed to finalize function %s\n", parser->functions[i]->name);
6630 ir_builder_delete(ir);
6634 parser_remove_ast(parser);
6636 if (compile_Werrors) {
6637 con_out("*** there were warnings treated as errors\n");
6638 compile_show_werrors();
6643 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6644 ir_builder_dump(ir, con_out);
6646 if (!ir_builder_generate(parser->code, ir, output)) {
6647 con_out("*** failed to generate output file\n");
6648 ir_builder_delete(ir);
6652 ir_builder_delete(ir);