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
9 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
10 * of the Software, and to permit persons to whom the Software is furnished to do
11 * so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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 1024
35 #define TYPEDEF_HT_SIZE 16
37 enum parser_pot { POT_PAREN, POT_TERNARY1, POT_TERNARY2 };
42 ast_expression **globals;
43 ast_expression **fields;
44 ast_function **functions;
45 ast_value **imm_float;
46 ast_value **imm_string;
47 ast_value **imm_vector;
50 /* must be deleted first, they reference immediates and values */
51 ast_value **accessors;
53 ast_value *imm_float_zero;
54 ast_value *imm_float_one;
55 ast_value *imm_vector_zero;
57 ast_value *reserved_version;
62 ast_function *function;
64 /* All the labels the function defined...
65 * Should they be in ast_function instead?
70 const char **continues;
72 /* A list of hashtables for each scope */
78 /* same as above but for the spelling corrector */
79 correct_trie_t **correct_variables;
80 size_t ***correct_variables_score; /* vector of vector of size_t* */
82 /* not to be used directly, we use the hash table */
83 ast_expression **_locals;
85 ast_value **_typedefs;
86 size_t *_blocktypedefs;
89 /* we store the '=' operator info */
90 const oper_info *assign_op;
92 /* Keep track of our ternary vs parenthesis nesting state.
93 * If we reach a 'comma' operator in a ternary without a paren,
94 * we shall trigger -Wternary-precedence.
99 ast_value *const_vec[3];
104 /* collected information */
105 size_t max_param_count;
108 static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10;
110 static void parser_enterblock(parser_t *parser);
111 static bool parser_leaveblock(parser_t *parser);
112 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
113 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
114 static bool parse_typedef(parser_t *parser);
115 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);
116 static ast_block* parse_block(parser_t *parser);
117 static bool parse_block_into(parser_t *parser, ast_block *block);
118 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
119 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
120 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
121 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
122 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname);
123 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname);
125 static void parseerror(parser_t *parser, const char *fmt, ...)
129 vcompile_error(parser->lex->tok.ctx, fmt, ap);
133 /* returns true if it counts as an error */
134 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
139 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
144 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
149 r = vcompile_warning(ctx, warntype, fmt, ap);
154 /**********************************************************************
155 * some maths used for constant folding
158 vector vec3_add(vector a, vector b)
167 vector vec3_sub(vector a, vector b)
176 qcfloat vec3_mulvv(vector a, vector b)
178 return (a.x * b.x + a.y * b.y + a.z * b.z);
181 vector vec3_mulvf(vector a, float b)
190 /**********************************************************************
194 bool parser_next(parser_t *parser)
196 /* lex_do kills the previous token */
197 parser->tok = lex_do(parser->lex);
198 if (parser->tok == TOKEN_EOF)
200 if (parser->tok >= TOKEN_ERROR) {
201 parseerror(parser, "lex error");
207 #define parser_tokval(p) ((p)->lex->tok.value)
208 #define parser_token(p) (&((p)->lex->tok))
209 #define parser_ctx(p) ((p)->lex->tok.ctx)
211 static ast_value* parser_const_float(parser_t *parser, double d)
216 for (i = 0; i < vec_size(parser->imm_float); ++i) {
217 const double compare = parser->imm_float[i]->constval.vfloat;
218 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
219 return parser->imm_float[i];
222 ctx = parser_ctx(parser);
224 memset(&ctx, 0, sizeof(ctx));
226 out = ast_value_new(ctx, "#IMMEDIATE", TYPE_FLOAT);
228 out->hasvalue = true;
229 out->constval.vfloat = d;
230 vec_push(parser->imm_float, out);
234 static ast_value* parser_const_float_0(parser_t *parser)
236 if (!parser->imm_float_zero)
237 parser->imm_float_zero = parser_const_float(parser, 0);
238 return parser->imm_float_zero;
241 static ast_value* parser_const_float_1(parser_t *parser)
243 if (!parser->imm_float_one)
244 parser->imm_float_one = parser_const_float(parser, 1);
245 return parser->imm_float_one;
248 static char *parser_strdup(const char *str)
251 /* actually dup empty strings */
252 char *out = (char*)mem_a(1);
256 return util_strdup(str);
259 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
263 for (i = 0; i < vec_size(parser->imm_string); ++i) {
264 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
265 return parser->imm_string[i];
269 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
270 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
272 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
274 out->hasvalue = true;
275 out->constval.vstring = parser_strdup(str);
276 vec_push(parser->imm_string, out);
280 static ast_value* parser_const_vector(parser_t *parser, vector v)
284 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
285 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
286 return parser->imm_vector[i];
288 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
290 out->hasvalue = true;
291 out->constval.vvec = v;
292 vec_push(parser->imm_vector, out);
296 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
302 return parser_const_vector(parser, v);
305 static ast_value* parser_const_vector_0(parser_t *parser)
307 if (!parser->imm_vector_zero)
308 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
309 return parser->imm_vector_zero;
312 static ast_expression* parser_find_field(parser_t *parser, const char *name)
314 return ( ast_expression*)util_htget(parser->htfields, name);
317 static ast_expression* parser_find_label(parser_t *parser, const char *name)
320 for(i = 0; i < vec_size(parser->labels); i++)
321 if (!strcmp(parser->labels[i]->name, name))
322 return (ast_expression*)parser->labels[i];
326 static ast_expression* parser_find_global(parser_t *parser, const char *name)
328 return (ast_expression*)util_htget(parser->htglobals, name);
331 static ast_expression* parser_find_param(parser_t *parser, const char *name)
335 if (!parser->function)
337 fun = parser->function->vtype;
338 for (i = 0; i < vec_size(fun->expression.params); ++i) {
339 if (!strcmp(fun->expression.params[i]->name, name))
340 return (ast_expression*)(fun->expression.params[i]);
345 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
350 hash = util_hthash(parser->htglobals, name);
353 for (i = vec_size(parser->variables); i > upto;) {
355 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
359 return parser_find_param(parser, name);
362 static ast_expression* parser_find_var(parser_t *parser, const char *name)
366 v = parser_find_local(parser, name, 0, &dummy);
367 if (!v) v = parser_find_global(parser, name);
371 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
375 hash = util_hthash(parser->typedefs[0], name);
377 for (i = vec_size(parser->typedefs); i > upto;) {
379 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
387 size_t etype; /* 0 = expression, others are operators */
391 ast_block *block; /* for commas and function calls */
400 #define SY_PAREN_EXPR '('
401 #define SY_PAREN_FUNC 'f'
402 #define SY_PAREN_INDEX '['
403 #define SY_PAREN_TERNARY '?'
405 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
416 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
420 e.out = (ast_expression*)v;
427 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
429 e.etype = 1 + (op - operators);
438 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
450 # define DEBUGSHUNTDO(x) x
452 # define DEBUGSHUNTDO(x)
455 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
456 * so we need to rotate it to become ent.(foo[n]).
458 static bool rotate_entfield_array_index_nodes(ast_expression **out)
460 ast_array_index *index;
461 ast_entfield *entfield;
465 ast_expression *entity;
467 lex_ctx ctx = ast_ctx(*out);
469 if (!ast_istype(*out, ast_array_index))
471 index = (ast_array_index*)*out;
473 if (!ast_istype(index->array, ast_entfield))
475 entfield = (ast_entfield*)index->array;
477 if (!ast_istype(entfield->field, ast_value))
479 field = (ast_value*)entfield->field;
482 entity = entfield->entity;
486 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
487 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
488 *out = (ast_expression*)entfield;
493 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
495 switch (v->expression.vtype) {
497 return !!v->constval.vfloat;
499 return !!v->constval.vint;
501 if (OPTS_FLAG(CORRECT_LOGIC))
502 return v->constval.vvec.x &&
503 v->constval.vvec.y &&
506 return !!(v->constval.vvec.x);
508 if (!v->constval.vstring)
510 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
512 return !!v->constval.vstring[0];
514 compile_error(ctx, "internal error: immediate_is_true on invalid type");
515 return !!v->constval.vfunc;
519 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
523 ast_expression *out = NULL;
524 ast_expression *exprs[3];
525 ast_block *blocks[3];
526 ast_value *asvalue[3];
527 ast_binstore *asbinstore;
528 size_t i, assignop, addop, subop;
529 qcint generated_op = 0;
534 if (!vec_size(sy->ops)) {
535 parseerror(parser, "internal error: missing operator");
539 if (vec_last(sy->ops).paren) {
540 parseerror(parser, "unmatched parenthesis");
544 op = &operators[vec_last(sy->ops).etype - 1];
545 ctx = vec_last(sy->ops).ctx;
547 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
549 if (vec_size(sy->out) < op->operands) {
550 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
551 op->op, (int)op->id);
555 vec_shrinkby(sy->ops, 1);
557 /* op(:?) has no input and no output */
561 vec_shrinkby(sy->out, op->operands);
562 for (i = 0; i < op->operands; ++i) {
563 exprs[i] = sy->out[vec_size(sy->out)+i].out;
564 blocks[i] = sy->out[vec_size(sy->out)+i].block;
565 asvalue[i] = (ast_value*)exprs[i];
567 if (exprs[i]->expression.vtype == TYPE_NOEXPR &&
568 !(i != 0 && op->id == opid2('?',':')) &&
569 !(i == 1 && op->id == opid1('.')))
571 if (ast_istype(exprs[i], ast_label))
572 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
574 compile_error(ast_ctx(exprs[i]), "not an expression");
575 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
579 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
580 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
584 #define NotSameType(T) \
585 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
586 exprs[0]->expression.vtype != T)
587 #define CanConstFold1(A) \
588 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
589 (A)->expression.vtype != TYPE_FUNCTION)
590 #define CanConstFold(A, B) \
591 (CanConstFold1(A) && CanConstFold1(B))
592 #define ConstV(i) (asvalue[(i)]->constval.vvec)
593 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
594 #define ConstS(i) (asvalue[(i)]->constval.vstring)
598 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
602 if (exprs[0]->expression.vtype == TYPE_VECTOR &&
603 exprs[1]->expression.vtype == TYPE_NOEXPR)
605 if (exprs[1] == (ast_expression*)parser->const_vec[0])
606 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
607 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
608 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
609 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
610 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
612 parseerror(parser, "access to invalid vector component");
616 else if (exprs[0]->expression.vtype == TYPE_ENTITY) {
617 if (exprs[1]->expression.vtype != TYPE_FIELD) {
618 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
621 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
623 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
624 parseerror(parser, "vectors cannot be accessed this way");
628 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
634 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
635 !(exprs[0]->expression.vtype == TYPE_FIELD &&
636 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
638 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
639 parseerror(parser, "cannot index value of type %s", ty1);
642 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
643 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
644 parseerror(parser, "index must be of type float, not %s", ty1);
647 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
648 if (rotate_entfield_array_index_nodes(&out))
651 /* This is not broken in fteqcc anymore */
652 if (opts.standard != COMPILER_GMQCC) {
653 /* this error doesn't need to make us bail out */
654 (void)!parsewarning(parser, WARN_EXTENSIONS,
655 "accessing array-field members of an entity without parenthesis\n"
656 " -> this is an extension from -std=gmqcc");
664 if (!ast_block_add_expr(blocks[0], exprs[1]))
667 blocks[0] = ast_block_new(ctx);
668 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
669 !ast_block_add_expr(blocks[0], exprs[1]))
674 if (!ast_block_set_type(blocks[0], exprs[1]))
677 vec_push(sy->out, syblock(ctx, blocks[0]));
684 switch (exprs[0]->expression.vtype) {
686 if (CanConstFold1(exprs[0]))
687 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
689 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
690 (ast_expression*)parser_const_float_0(parser),
694 if (CanConstFold1(exprs[0]))
695 out = (ast_expression*)parser_const_vector_f(parser,
696 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
698 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
699 (ast_expression*)parser_const_vector_0(parser),
703 parseerror(parser, "invalid types used in expression: cannot negate type %s",
704 type_name[exprs[0]->expression.vtype]);
710 switch (exprs[0]->expression.vtype) {
712 if (CanConstFold1(exprs[0]))
713 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
715 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
718 if (CanConstFold1(exprs[0]))
719 out = (ast_expression*)parser_const_float(parser,
720 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
722 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
725 if (CanConstFold1(exprs[0])) {
726 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
727 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
729 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
731 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
732 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
734 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
737 /* we don't constant-fold NOT for these types */
739 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
742 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
745 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
746 type_name[exprs[0]->expression.vtype]);
752 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
753 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
755 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
756 type_name[exprs[0]->expression.vtype],
757 type_name[exprs[1]->expression.vtype]);
760 switch (exprs[0]->expression.vtype) {
762 if (CanConstFold(exprs[0], exprs[1]))
764 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
767 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
770 if (CanConstFold(exprs[0], exprs[1]))
771 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
773 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
776 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
777 type_name[exprs[0]->expression.vtype],
778 type_name[exprs[1]->expression.vtype]);
783 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
784 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
786 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
787 type_name[exprs[1]->expression.vtype],
788 type_name[exprs[0]->expression.vtype]);
791 switch (exprs[0]->expression.vtype) {
793 if (CanConstFold(exprs[0], exprs[1]))
794 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
796 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
799 if (CanConstFold(exprs[0], exprs[1]))
800 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
802 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
805 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
806 type_name[exprs[1]->expression.vtype],
807 type_name[exprs[0]->expression.vtype]);
812 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
813 !(exprs[0]->expression.vtype == TYPE_VECTOR &&
814 exprs[1]->expression.vtype == TYPE_FLOAT) &&
815 !(exprs[1]->expression.vtype == TYPE_VECTOR &&
816 exprs[0]->expression.vtype == TYPE_FLOAT)
819 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
820 type_name[exprs[1]->expression.vtype],
821 type_name[exprs[0]->expression.vtype]);
824 switch (exprs[0]->expression.vtype) {
826 if (exprs[1]->expression.vtype == TYPE_VECTOR)
828 if (CanConstFold(exprs[0], exprs[1]))
829 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
831 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
835 if (CanConstFold(exprs[0], exprs[1]))
836 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
838 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
842 if (exprs[1]->expression.vtype == TYPE_FLOAT)
844 if (CanConstFold(exprs[0], exprs[1]))
845 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
847 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
851 if (CanConstFold(exprs[0], exprs[1]))
852 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
853 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[0])) {
854 vector vec = ConstV(0);
855 if (!vec.y && !vec.z) { /* 'n 0 0' * v */
856 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
857 out = (ast_expression*)ast_member_new(ctx, exprs[1], 0, NULL);
858 out->expression.node.keep = false;
859 ((ast_member*)out)->rvalue = true;
861 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.x), out);
863 else if (!vec.x && !vec.z) { /* '0 n 0' * v */
864 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
865 out = (ast_expression*)ast_member_new(ctx, exprs[1], 1, NULL);
866 out->expression.node.keep = false;
867 ((ast_member*)out)->rvalue = true;
869 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.y), out);
871 else if (!vec.x && !vec.y) { /* '0 n 0' * v */
872 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
873 out = (ast_expression*)ast_member_new(ctx, exprs[1], 2, NULL);
874 out->expression.node.keep = false;
875 ((ast_member*)out)->rvalue = true;
877 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.z), out);
880 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
882 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[1])) {
883 vector vec = ConstV(1);
884 if (!vec.y && !vec.z) { /* v * 'n 0 0' */
885 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
886 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
887 out->expression.node.keep = false;
888 ((ast_member*)out)->rvalue = true;
890 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.x));
892 else if (!vec.x && !vec.z) { /* v * '0 n 0' */
893 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
894 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
895 out->expression.node.keep = false;
896 ((ast_member*)out)->rvalue = true;
898 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.y));
900 else if (!vec.x && !vec.y) { /* v * '0 n 0' */
901 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
902 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
903 out->expression.node.keep = false;
904 ((ast_member*)out)->rvalue = true;
906 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.z));
909 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
912 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
916 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
917 type_name[exprs[1]->expression.vtype],
918 type_name[exprs[0]->expression.vtype]);
923 if (NotSameType(TYPE_FLOAT)) {
924 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
925 type_name[exprs[0]->expression.vtype],
926 type_name[exprs[1]->expression.vtype]);
929 if (CanConstFold(exprs[0], exprs[1]))
930 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
932 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
936 parseerror(parser, "qc does not have a modulo operator");
940 if (NotSameType(TYPE_FLOAT)) {
941 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
942 type_name[exprs[0]->expression.vtype],
943 type_name[exprs[1]->expression.vtype]);
946 if (CanConstFold(exprs[0], exprs[1]))
947 out = (ast_expression*)parser_const_float(parser,
948 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
949 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
951 out = (ast_expression*)ast_binary_new(ctx,
952 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
956 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor via ^");
961 if (CanConstFold(exprs[0], exprs[1]) && ! NotSameType(TYPE_FLOAT)) {
962 if (op->id == opid2('<','<'))
963 out = (ast_expression*)parser_const_float(parser, (double)((int)(ConstF(0)) << (int)(ConstF(1))));
965 out = (ast_expression*)parser_const_float(parser, (double)((int)(ConstF(0)) >> (int)(ConstF(1))));
968 case opid3('<','<','='):
969 case opid3('>','>','='):
970 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
974 generated_op += 1; /* INSTR_OR */
976 generated_op += INSTR_AND;
978 if (NotSameType(TYPE_FLOAT)) {
979 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
980 type_name[exprs[0]->expression.vtype],
981 type_name[exprs[1]->expression.vtype]);
982 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
983 parseerror(parser, "TODO: optional early out");
987 if (CanConstFold(exprs[0], exprs[1]))
989 if (OPTS_FLAG(PERL_LOGIC)) {
990 if (immediate_is_true(ctx, asvalue[0]))
994 out = (ast_expression*)parser_const_float(parser,
995 ( (generated_op == INSTR_OR)
996 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
997 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
1002 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
1003 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1004 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1005 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
1008 for (i = 0; i < 2; ++i) {
1009 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->expression.vtype == TYPE_VECTOR) {
1010 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
1012 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1014 exprs[i] = out; out = NULL;
1015 if (OPTS_FLAG(PERL_LOGIC)) {
1016 /* here we want to keep the right expressions' type */
1020 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->expression.vtype == TYPE_STRING) {
1021 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
1023 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1025 exprs[i] = out; out = NULL;
1026 if (OPTS_FLAG(PERL_LOGIC)) {
1027 /* here we want to keep the right expressions' type */
1032 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1036 case opid2('?',':'):
1037 if (vec_last(parser->pot) != POT_TERNARY2) {
1038 parseerror(parser, "mismatched parenthesis/ternary");
1041 vec_pop(parser->pot);
1042 if (!ast_compare_type(exprs[1], exprs[2])) {
1043 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
1044 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
1045 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
1048 if (CanConstFold1(exprs[0]))
1049 out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
1051 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
1055 generated_op += 1; /* INSTR_GT */
1057 generated_op += 1; /* INSTR_LT */
1058 case opid2('>', '='):
1059 generated_op += 1; /* INSTR_GE */
1060 case opid2('<', '='):
1061 generated_op += INSTR_LE;
1062 if (NotSameType(TYPE_FLOAT)) {
1063 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1064 type_name[exprs[0]->expression.vtype],
1065 type_name[exprs[1]->expression.vtype]);
1068 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1070 case opid2('!', '='):
1071 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1072 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1073 type_name[exprs[0]->expression.vtype],
1074 type_name[exprs[1]->expression.vtype]);
1077 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1079 case opid2('=', '='):
1080 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1081 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1082 type_name[exprs[0]->expression.vtype],
1083 type_name[exprs[1]->expression.vtype]);
1086 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1090 if (ast_istype(exprs[0], ast_entfield)) {
1091 ast_expression *field = ((ast_entfield*)exprs[0])->field;
1092 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1093 exprs[0]->expression.vtype == TYPE_FIELD &&
1094 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1096 assignop = type_storep_instr[TYPE_VECTOR];
1099 assignop = type_storep_instr[exprs[0]->expression.vtype];
1100 if (assignop == AINSTR_END || !ast_compare_type(field->expression.next, exprs[1]))
1102 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
1103 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1104 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1105 field->expression.next->expression.vtype == TYPE_FUNCTION &&
1106 exprs[1]->expression.vtype == TYPE_FUNCTION)
1108 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1109 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1112 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1117 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1118 exprs[0]->expression.vtype == TYPE_FIELD &&
1119 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1121 assignop = type_store_instr[TYPE_VECTOR];
1124 assignop = type_store_instr[exprs[0]->expression.vtype];
1127 if (assignop == AINSTR_END) {
1128 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1129 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1130 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1132 else if (!ast_compare_type(exprs[0], exprs[1]))
1134 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1135 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1136 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1137 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1138 exprs[1]->expression.vtype == TYPE_FUNCTION)
1140 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1141 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1144 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1147 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1148 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1150 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1152 case opid3('+','+','P'):
1153 case opid3('-','-','P'):
1155 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1156 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1157 parseerror(parser, "invalid type for prefix increment: %s", ty1);
1160 if (op->id == opid3('+','+','P'))
1161 addop = INSTR_ADD_F;
1163 addop = INSTR_SUB_F;
1164 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1165 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1167 if (ast_istype(exprs[0], ast_entfield)) {
1168 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1170 (ast_expression*)parser_const_float_1(parser));
1172 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1174 (ast_expression*)parser_const_float_1(parser));
1177 case opid3('S','+','+'):
1178 case opid3('S','-','-'):
1180 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1181 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1182 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1185 if (op->id == opid3('S','+','+')) {
1186 addop = INSTR_ADD_F;
1187 subop = INSTR_SUB_F;
1189 addop = INSTR_SUB_F;
1190 subop = INSTR_ADD_F;
1192 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1193 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1195 if (ast_istype(exprs[0], ast_entfield)) {
1196 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1198 (ast_expression*)parser_const_float_1(parser));
1200 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1202 (ast_expression*)parser_const_float_1(parser));
1206 out = (ast_expression*)ast_binary_new(ctx, subop,
1208 (ast_expression*)parser_const_float_1(parser));
1210 case opid2('+','='):
1211 case opid2('-','='):
1212 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1213 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1215 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1216 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1217 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1221 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1222 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1224 if (ast_istype(exprs[0], ast_entfield))
1225 assignop = type_storep_instr[exprs[0]->expression.vtype];
1227 assignop = type_store_instr[exprs[0]->expression.vtype];
1228 switch (exprs[0]->expression.vtype) {
1230 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1231 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1232 exprs[0], exprs[1]);
1235 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1236 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1237 exprs[0], exprs[1]);
1240 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1241 type_name[exprs[0]->expression.vtype],
1242 type_name[exprs[1]->expression.vtype]);
1246 case opid2('*','='):
1247 case opid2('/','='):
1248 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1249 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1250 exprs[0]->expression.vtype == TYPE_VECTOR))
1252 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1253 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1254 parseerror(parser, "invalid types used in expression: %s and %s",
1258 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1259 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1261 if (ast_istype(exprs[0], ast_entfield))
1262 assignop = type_storep_instr[exprs[0]->expression.vtype];
1264 assignop = type_store_instr[exprs[0]->expression.vtype];
1265 switch (exprs[0]->expression.vtype) {
1267 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1268 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1269 exprs[0], exprs[1]);
1272 if (op->id == opid2('*','=')) {
1273 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1274 exprs[0], exprs[1]);
1276 /* there's no DIV_VF */
1277 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1278 (ast_expression*)parser_const_float_1(parser),
1282 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1287 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1288 type_name[exprs[0]->expression.vtype],
1289 type_name[exprs[1]->expression.vtype]);
1293 case opid2('&','='):
1294 case opid2('|','='):
1295 if (NotSameType(TYPE_FLOAT)) {
1296 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1297 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1298 parseerror(parser, "invalid types used in expression: %s and %s",
1302 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1303 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1305 if (ast_istype(exprs[0], ast_entfield))
1306 assignop = type_storep_instr[exprs[0]->expression.vtype];
1308 assignop = type_store_instr[exprs[0]->expression.vtype];
1309 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1310 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1311 exprs[0], exprs[1]);
1313 case opid3('&','~','='):
1314 /* This is like: a &= ~(b);
1315 * But QC has no bitwise-not, so we implement it as
1318 if (NotSameType(TYPE_FLOAT)) {
1319 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1320 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1321 parseerror(parser, "invalid types used in expression: %s and %s",
1325 if (ast_istype(exprs[0], ast_entfield))
1326 assignop = type_storep_instr[exprs[0]->expression.vtype];
1328 assignop = type_store_instr[exprs[0]->expression.vtype];
1329 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1332 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1333 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1335 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1336 asbinstore->keep_dest = true;
1337 out = (ast_expression*)asbinstore;
1343 parseerror(parser, "failed to apply operand %s", op->op);
1347 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1348 vec_push(sy->out, syexp(ctx, out));
1352 static bool parser_close_call(parser_t *parser, shunt *sy)
1354 /* was a function call */
1355 ast_expression *fun;
1361 vec_shrinkby(sy->ops, 1);
1362 fid = sy->ops[vec_size(sy->ops)].off;
1364 /* out[fid] is the function
1365 * everything above is parameters...
1366 * 0 params = nothing
1367 * 1 params = ast_expression
1371 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1372 parseerror(parser, "internal error: function call needs function and parameter list...");
1376 fun = sy->out[fid].out;
1378 if (fun == intrinsic_debug_typestring) {
1380 if (fid+2 != vec_size(sy->out) ||
1381 vec_last(sy->out).block)
1383 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1386 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1387 ast_unref(vec_last(sy->out).out);
1388 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1389 (ast_expression*)parser_const_string(parser, ty, false));
1390 vec_shrinkby(sy->out, 1);
1394 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1396 parseerror(parser, "internal error: failed to create ast_call node");
1400 if (fid+1 == vec_size(sy->out)) {
1403 } else if (fid+2 == vec_size(sy->out)) {
1405 vec_shrinkby(sy->out, 1);
1406 params = sy->out[vec_size(sy->out)].block;
1410 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1412 paramcount = vec_size(params->exprs);
1413 call->params = params->exprs;
1414 params->exprs = NULL;
1417 if (parser->max_param_count < paramcount)
1418 parser->max_param_count = paramcount;
1419 (void)!ast_call_check_types(call);
1421 parseerror(parser, "invalid function call");
1425 /* overwrite fid, the function, with a call */
1426 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1428 if (fun->expression.vtype != TYPE_FUNCTION) {
1429 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1433 if (!fun->expression.next) {
1434 parseerror(parser, "could not determine function return type");
1437 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1439 if (fun->expression.flags & AST_FLAG_DEPRECATED) {
1441 return !parsewarning(parser, WARN_DEPRECATED,
1442 "call to function (which is marked deprecated)\n",
1443 "-> it has been declared here: %s:%i",
1444 ast_ctx(fun).file, ast_ctx(fun).line);
1447 return !parsewarning(parser, WARN_DEPRECATED,
1448 "call to `%s` (which is marked deprecated)\n"
1449 "-> `%s` declared here: %s:%i",
1450 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1452 return !parsewarning(parser, WARN_DEPRECATED,
1453 "call to `%s` (deprecated: %s)\n"
1454 "-> `%s` declared here: %s:%i",
1455 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1459 if (vec_size(fun->expression.params) != paramcount &&
1460 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1461 vec_size(fun->expression.params) < paramcount))
1463 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1465 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1466 "too %s parameters for call to %s: expected %i, got %i\n"
1467 " -> `%s` has been declared here: %s:%i",
1468 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1469 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1471 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1472 "too %s parameters for function call: expected %i, got %i\n"
1473 " -> it has been declared here: %s:%i",
1474 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1475 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1482 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1484 if (!vec_size(sy->ops)) {
1485 parseerror(parser, "unmatched closing paren");
1488 /* this would for bit a + (x) because there are no operators inside (x)
1489 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1490 parseerror(parser, "empty parenthesis expression");
1494 while (vec_size(sy->ops)) {
1495 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1496 if (!parser_close_call(parser, sy))
1500 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1501 vec_shrinkby(sy->ops, 1);
1502 return !functions_only;
1504 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1507 /* pop off the parenthesis */
1508 vec_shrinkby(sy->ops, 1);
1509 /* then apply the index operator */
1510 if (!parser_sy_apply_operator(parser, sy))
1514 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1517 if (vec_last(parser->pot) != POT_TERNARY1) {
1518 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1521 vec_last(parser->pot) = POT_TERNARY2;
1522 /* pop off the parenthesis */
1523 vec_shrinkby(sy->ops, 1);
1526 if (!parser_sy_apply_operator(parser, sy))
1532 static void parser_reclassify_token(parser_t *parser)
1535 for (i = 0; i < operator_count; ++i) {
1536 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1537 parser->tok = TOKEN_OPERATOR;
1543 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1545 ast_expression *expr = NULL;
1547 bool wantop = false;
1548 /* only warn once about an assignment in a truth value because the current code
1549 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1551 bool warn_truthvalue = true;
1553 /* count the parens because an if starts with one, so the
1554 * end of a condition is an unmatched closing paren
1562 parser->lex->flags.noops = false;
1564 parser_reclassify_token(parser);
1568 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1569 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1571 /* a translatable string */
1575 parseerror(parser, "expected operator or end of statement, got constant");
1579 parser->lex->flags.noops = true;
1580 if (!parser_next(parser) || parser->tok != '(') {
1581 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1584 parser->lex->flags.noops = false;
1585 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1586 parseerror(parser, "expected a constant string in translatable-string extension");
1589 val = parser_const_string(parser, parser_tokval(parser), true);
1593 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1594 DEBUGSHUNTDO(con_out("push string\n"));
1596 if (!parser_next(parser) || parser->tok != ')') {
1597 parseerror(parser, "expected closing paren after translatable string");
1601 else if (parser->tok == TOKEN_IDENT)
1603 const char *ctoken = parser_tokval(parser);
1604 ast_expression *prev = vec_size(sy.out) ? vec_last(sy.out).out : NULL;
1605 ast_expression *var;
1607 parseerror(parser, "expected operator or end of statement");
1611 /* a_vector.{x,y,z} */
1612 if (!vec_size(sy.ops) ||
1613 !vec_last(sy.ops).etype ||
1614 operators[vec_last(sy.ops).etype-1].id != opid1('.') ||
1615 (prev >= intrinsic_debug_typestring &&
1616 prev <= intrinsic_debug_typestring))
1618 /* When adding more intrinsics, fix the above condition */
1621 if (prev && prev->expression.vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1623 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1625 var = parser_find_var(parser, parser_tokval(parser));
1627 var = parser_find_field(parser, parser_tokval(parser));
1629 if (!var && with_labels) {
1630 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1632 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1633 var = (ast_expression*)lbl;
1634 vec_push(parser->labels, lbl);
1639 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1640 var = (ast_expression*)intrinsic_debug_typestring;
1645 char *correct = NULL;
1648 * sometimes people use preprocessing predefs without enabling them
1649 * i've done this thousands of times already myself. Lets check for
1650 * it in the predef table. And diagnose it better :)
1652 if (!OPTS_FLAG(FTEPP_PREDEFS)) {
1653 for (i = 0; i < sizeof(ftepp_predefs)/sizeof(*ftepp_predefs); i++) {
1654 if (!strcmp(ftepp_predefs[i].name, parser_tokval(parser))) {
1655 parseerror(parser, "unexpected ident: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1662 * TODO: determine the best score for the identifier: be it
1663 * a variable, a field.
1665 * We should also consider adding correction tables for
1666 * other things as well.
1668 if (OPTS_FLAG(ENHANCED_DIAGNOSTICS)) {
1670 correct_init(&corr);
1672 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1673 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1674 if (strcmp(correct, parser_tokval(parser))) {
1676 } else if (correct) {
1681 correct_free(&corr);
1684 parseerror(parser, "unexpected ident: %s (did you mean %s?)", parser_tokval(parser), correct);
1689 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1695 if (ast_istype(var, ast_value)) {
1696 ((ast_value*)var)->uses++;
1698 else if (ast_istype(var, ast_member)) {
1699 ast_member *mem = (ast_member*)var;
1700 if (ast_istype(mem->owner, ast_value))
1701 ((ast_value*)(mem->owner))->uses++;
1704 vec_push(sy.out, syexp(parser_ctx(parser), var));
1705 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1707 else if (parser->tok == TOKEN_FLOATCONST) {
1710 parseerror(parser, "expected operator or end of statement, got constant");
1714 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1717 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1718 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1720 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1723 parseerror(parser, "expected operator or end of statement, got constant");
1727 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1730 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1731 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1733 else if (parser->tok == TOKEN_STRINGCONST) {
1736 parseerror(parser, "expected operator or end of statement, got constant");
1740 val = parser_const_string(parser, parser_tokval(parser), false);
1743 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1744 DEBUGSHUNTDO(con_out("push string\n"));
1746 else if (parser->tok == TOKEN_VECTORCONST) {
1749 parseerror(parser, "expected operator or end of statement, got constant");
1753 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1756 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1757 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1758 parser_token(parser)->constval.v.x,
1759 parser_token(parser)->constval.v.y,
1760 parser_token(parser)->constval.v.z));
1762 else if (parser->tok == '(') {
1763 parseerror(parser, "internal error: '(' should be classified as operator");
1766 else if (parser->tok == '[') {
1767 parseerror(parser, "internal error: '[' should be classified as operator");
1770 else if (parser->tok == ')') {
1772 DEBUGSHUNTDO(con_out("do[op] )\n"));
1776 /* we do expect an operator next */
1777 /* closing an opening paren */
1778 if (!parser_close_paren(parser, &sy, false))
1780 if (vec_last(parser->pot) != POT_PAREN) {
1781 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1784 vec_pop(parser->pot);
1786 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1790 /* allowed for function calls */
1791 if (!parser_close_paren(parser, &sy, true))
1793 if (vec_last(parser->pot) != POT_PAREN) {
1794 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1797 vec_pop(parser->pot);
1801 else if (parser->tok == ']') {
1803 parseerror(parser, "operand expected");
1807 if (!parser_close_paren(parser, &sy, false))
1809 if (vec_last(parser->pot) != POT_PAREN) {
1810 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1813 vec_pop(parser->pot);
1816 else if (parser->tok == TOKEN_TYPENAME) {
1817 parseerror(parser, "unexpected typename");
1820 else if (parser->tok != TOKEN_OPERATOR) {
1822 parseerror(parser, "expected operator or end of statement");
1829 /* classify the operator */
1830 const oper_info *op;
1831 const oper_info *olast = NULL;
1833 for (o = 0; o < operator_count; ++o) {
1834 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1835 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1836 !strcmp(parser_tokval(parser), operators[o].op))
1841 if (o == operator_count) {
1842 /* no operator found... must be the end of the statement */
1845 /* found an operator */
1848 /* when declaring variables, a comma starts a new variable */
1849 if (op->id == opid1(',') && !parens && stopatcomma) {
1850 /* fixup the token */
1855 /* a colon without a pervious question mark cannot be a ternary */
1856 if (!ternaries && op->id == opid2(':','?')) {
1861 if (op->id == opid1(',')) {
1862 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1863 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1867 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1868 olast = &operators[vec_last(sy.ops).etype-1];
1870 #define IsAssignOp(x) (\
1871 (x) == opid1('=') || \
1872 (x) == opid2('+','=') || \
1873 (x) == opid2('-','=') || \
1874 (x) == opid2('*','=') || \
1875 (x) == opid2('/','=') || \
1876 (x) == opid2('%','=') || \
1877 (x) == opid2('&','=') || \
1878 (x) == opid2('|','=') || \
1879 (x) == opid3('&','~','=') \
1881 if (warn_truthvalue) {
1882 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1883 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1884 (truthvalue && !vec_size(parser->pot) && IsAssignOp(op->id))
1887 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1888 warn_truthvalue = false;
1893 (op->prec < olast->prec) ||
1894 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1896 if (!parser_sy_apply_operator(parser, &sy))
1898 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1899 olast = &operators[vec_last(sy.ops).etype-1];
1904 if (op->id == opid1('(')) {
1906 size_t sycount = vec_size(sy.out);
1907 DEBUGSHUNTDO(con_out("push [op] (\n"));
1908 ++parens; vec_push(parser->pot, POT_PAREN);
1909 /* we expected an operator, this is the function-call operator */
1910 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1912 ++parens; vec_push(parser->pot, POT_PAREN);
1913 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1914 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1917 } else if (op->id == opid1('[')) {
1919 parseerror(parser, "unexpected array subscript");
1922 ++parens; vec_push(parser->pot, POT_PAREN);
1923 /* push both the operator and the paren, this makes life easier */
1924 vec_push(sy.ops, syop(parser_ctx(parser), op));
1925 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1927 } else if (op->id == opid2('?',':')) {
1928 vec_push(sy.ops, syop(parser_ctx(parser), op));
1929 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1932 vec_push(parser->pot, POT_TERNARY1);
1933 } else if (op->id == opid2(':','?')) {
1934 if (!vec_size(parser->pot)) {
1935 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1938 if (vec_last(parser->pot) != POT_TERNARY1) {
1939 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1942 if (!parser_close_paren(parser, &sy, false))
1944 vec_push(sy.ops, syop(parser_ctx(parser), op));
1948 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1949 vec_push(sy.ops, syop(parser_ctx(parser), op));
1950 wantop = !!(op->flags & OP_SUFFIX);
1953 if (!parser_next(parser)) {
1956 if (parser->tok == ';' ||
1957 (!parens && (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
1963 while (vec_size(sy.ops)) {
1964 if (!parser_sy_apply_operator(parser, &sy))
1968 parser->lex->flags.noops = true;
1969 if (!vec_size(sy.out)) {
1970 parseerror(parser, "empty expression");
1973 expr = sy.out[0].out;
1976 DEBUGSHUNTDO(con_out("shunt done\n"));
1977 if (vec_size(parser->pot)) {
1978 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1981 vec_free(parser->pot);
1985 parser->lex->flags.noops = true;
1991 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
1993 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
1996 if (parser->tok != ';') {
1997 parseerror(parser, "semicolon expected after expression");
2001 if (!parser_next(parser)) {
2008 static void parser_enterblock(parser_t *parser)
2010 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2011 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2012 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2013 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2014 vec_push(parser->_block_ctx, parser_ctx(parser));
2017 vec_push(parser->correct_variables, correct_trie_new());
2018 vec_push(parser->correct_variables_score, NULL);
2021 static bool parser_leaveblock(parser_t *parser)
2024 size_t locals, typedefs;
2026 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2027 parseerror(parser, "internal error: parser_leaveblock with no block");
2031 util_htdel(vec_last(parser->variables));
2032 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2034 vec_pop(parser->variables);
2035 vec_pop(parser->correct_variables);
2036 vec_pop(parser->correct_variables_score);
2037 if (!vec_size(parser->_blocklocals)) {
2038 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2042 locals = vec_last(parser->_blocklocals);
2043 vec_pop(parser->_blocklocals);
2044 while (vec_size(parser->_locals) != locals) {
2045 ast_expression *e = vec_last(parser->_locals);
2046 ast_value *v = (ast_value*)e;
2047 vec_pop(parser->_locals);
2048 if (ast_istype(e, ast_value) && !v->uses) {
2049 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2054 typedefs = vec_last(parser->_blocktypedefs);
2055 while (vec_size(parser->_typedefs) != typedefs) {
2056 ast_delete(vec_last(parser->_typedefs));
2057 vec_pop(parser->_typedefs);
2059 util_htdel(vec_last(parser->typedefs));
2060 vec_pop(parser->typedefs);
2062 vec_pop(parser->_block_ctx);
2067 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2069 vec_push(parser->_locals, e);
2070 util_htset(vec_last(parser->variables), name, (void*)e);
2074 vec_last(parser->correct_variables),
2075 &vec_last(parser->correct_variables_score),
2080 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2082 vec_push(parser->globals, e);
2083 util_htset(parser->htglobals, name, e);
2087 parser->correct_variables[0],
2088 &parser->correct_variables_score[0],
2093 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2097 ast_expression *prev;
2099 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
2102 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2105 parseerror(parser, "internal error: failed to process condition");
2110 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
2112 /* vector types need to be cast to true booleans */
2113 ast_binary *bin = (ast_binary*)cond;
2114 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2116 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2118 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2121 parseerror(parser, "internal error: failed to process condition");
2128 unary = (ast_unary*)cond;
2129 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2131 cond = unary->operand;
2132 unary->operand = NULL;
2135 unary = (ast_unary*)cond;
2139 parseerror(parser, "internal error: failed to process condition");
2141 if (ifnot) *_ifnot = !*_ifnot;
2145 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2148 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2151 lex_ctx ctx = parser_ctx(parser);
2153 (void)block; /* not touching */
2155 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2156 if (!parser_next(parser)) {
2157 parseerror(parser, "expected condition or 'not'");
2160 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2162 if (!parser_next(parser)) {
2163 parseerror(parser, "expected condition in parenthesis");
2167 if (parser->tok != '(') {
2168 parseerror(parser, "expected 'if' condition in parenthesis");
2171 /* parse into the expression */
2172 if (!parser_next(parser)) {
2173 parseerror(parser, "expected 'if' condition after opening paren");
2176 /* parse the condition */
2177 cond = parse_expression_leave(parser, false, true, false);
2181 if (parser->tok != ')') {
2182 parseerror(parser, "expected closing paren after 'if' condition");
2186 /* parse into the 'then' branch */
2187 if (!parser_next(parser)) {
2188 parseerror(parser, "expected statement for on-true branch of 'if'");
2192 if (!parse_statement_or_block(parser, &ontrue)) {
2197 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2198 /* check for an else */
2199 if (!strcmp(parser_tokval(parser), "else")) {
2200 /* parse into the 'else' branch */
2201 if (!parser_next(parser)) {
2202 parseerror(parser, "expected on-false branch after 'else'");
2207 if (!parse_statement_or_block(parser, &onfalse)) {
2214 cond = process_condition(parser, cond, &ifnot);
2216 if (ontrue) ast_delete(ontrue);
2217 if (onfalse) ast_delete(onfalse);
2222 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2224 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2225 *out = (ast_expression*)ifthen;
2229 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2230 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2235 /* skip the 'while' and get the body */
2236 if (!parser_next(parser)) {
2237 if (OPTS_FLAG(LOOP_LABELS))
2238 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2240 parseerror(parser, "expected 'while' condition in parenthesis");
2244 if (parser->tok == ':') {
2245 if (!OPTS_FLAG(LOOP_LABELS))
2246 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2247 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2248 parseerror(parser, "expected loop label");
2251 label = util_strdup(parser_tokval(parser));
2252 if (!parser_next(parser)) {
2254 parseerror(parser, "expected 'while' condition in parenthesis");
2259 if (parser->tok != '(') {
2260 parseerror(parser, "expected 'while' condition in parenthesis");
2264 vec_push(parser->breaks, label);
2265 vec_push(parser->continues, label);
2267 rv = parse_while_go(parser, block, out);
2270 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2271 parseerror(parser, "internal error: label stack corrupted");
2277 vec_pop(parser->breaks);
2278 vec_pop(parser->continues);
2283 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2286 ast_expression *cond, *ontrue;
2290 lex_ctx ctx = parser_ctx(parser);
2292 (void)block; /* not touching */
2294 /* parse into the expression */
2295 if (!parser_next(parser)) {
2296 parseerror(parser, "expected 'while' condition after opening paren");
2299 /* parse the condition */
2300 cond = parse_expression_leave(parser, false, true, false);
2304 if (parser->tok != ')') {
2305 parseerror(parser, "expected closing paren after 'while' condition");
2309 /* parse into the 'then' branch */
2310 if (!parser_next(parser)) {
2311 parseerror(parser, "expected while-loop body");
2315 if (!parse_statement_or_block(parser, &ontrue)) {
2320 cond = process_condition(parser, cond, &ifnot);
2325 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2326 *out = (ast_expression*)aloop;
2330 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2331 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2336 /* skip the 'do' and get the body */
2337 if (!parser_next(parser)) {
2338 if (OPTS_FLAG(LOOP_LABELS))
2339 parseerror(parser, "expected loop label or body");
2341 parseerror(parser, "expected loop body");
2345 if (parser->tok == ':') {
2346 if (!OPTS_FLAG(LOOP_LABELS))
2347 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2348 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2349 parseerror(parser, "expected loop label");
2352 label = util_strdup(parser_tokval(parser));
2353 if (!parser_next(parser)) {
2355 parseerror(parser, "expected loop body");
2360 vec_push(parser->breaks, label);
2361 vec_push(parser->continues, label);
2363 rv = parse_dowhile_go(parser, block, out);
2366 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2367 parseerror(parser, "internal error: label stack corrupted");
2373 vec_pop(parser->breaks);
2374 vec_pop(parser->continues);
2379 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2382 ast_expression *cond, *ontrue;
2386 lex_ctx ctx = parser_ctx(parser);
2388 (void)block; /* not touching */
2390 if (!parse_statement_or_block(parser, &ontrue))
2393 /* expect the "while" */
2394 if (parser->tok != TOKEN_KEYWORD ||
2395 strcmp(parser_tokval(parser), "while"))
2397 parseerror(parser, "expected 'while' and condition");
2402 /* skip the 'while' and check for opening paren */
2403 if (!parser_next(parser) || parser->tok != '(') {
2404 parseerror(parser, "expected 'while' condition in parenthesis");
2408 /* parse into the expression */
2409 if (!parser_next(parser)) {
2410 parseerror(parser, "expected 'while' condition after opening paren");
2414 /* parse the condition */
2415 cond = parse_expression_leave(parser, false, true, false);
2419 if (parser->tok != ')') {
2420 parseerror(parser, "expected closing paren after 'while' condition");
2426 if (!parser_next(parser) || parser->tok != ';') {
2427 parseerror(parser, "expected semicolon after condition");
2433 if (!parser_next(parser)) {
2434 parseerror(parser, "parse error");
2440 cond = process_condition(parser, cond, &ifnot);
2445 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2446 *out = (ast_expression*)aloop;
2450 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2451 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2456 /* skip the 'for' and check for opening paren */
2457 if (!parser_next(parser)) {
2458 if (OPTS_FLAG(LOOP_LABELS))
2459 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2461 parseerror(parser, "expected 'for' expressions in parenthesis");
2465 if (parser->tok == ':') {
2466 if (!OPTS_FLAG(LOOP_LABELS))
2467 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2468 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2469 parseerror(parser, "expected loop label");
2472 label = util_strdup(parser_tokval(parser));
2473 if (!parser_next(parser)) {
2475 parseerror(parser, "expected 'for' expressions in parenthesis");
2480 if (parser->tok != '(') {
2481 parseerror(parser, "expected 'for' expressions in parenthesis");
2485 vec_push(parser->breaks, label);
2486 vec_push(parser->continues, label);
2488 rv = parse_for_go(parser, block, out);
2491 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2492 parseerror(parser, "internal error: label stack corrupted");
2498 vec_pop(parser->breaks);
2499 vec_pop(parser->continues);
2503 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2506 ast_expression *initexpr, *cond, *increment, *ontrue;
2512 lex_ctx ctx = parser_ctx(parser);
2514 parser_enterblock(parser);
2521 /* parse into the expression */
2522 if (!parser_next(parser)) {
2523 parseerror(parser, "expected 'for' initializer after opening paren");
2528 if (parser->tok == TOKEN_IDENT)
2529 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2531 if (typevar || parser->tok == TOKEN_TYPENAME) {
2533 if (opts.standard != COMPILER_GMQCC) {
2534 if (parsewarning(parser, WARN_EXTENSIONS,
2535 "current standard does not allow variable declarations in for-loop initializers"))
2539 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2542 else if (parser->tok != ';')
2544 initexpr = parse_expression_leave(parser, false, false, false);
2549 /* move on to condition */
2550 if (parser->tok != ';') {
2551 parseerror(parser, "expected semicolon after for-loop initializer");
2554 if (!parser_next(parser)) {
2555 parseerror(parser, "expected for-loop condition");
2559 /* parse the condition */
2560 if (parser->tok != ';') {
2561 cond = parse_expression_leave(parser, false, true, false);
2566 /* move on to incrementor */
2567 if (parser->tok != ';') {
2568 parseerror(parser, "expected semicolon after for-loop initializer");
2571 if (!parser_next(parser)) {
2572 parseerror(parser, "expected for-loop condition");
2576 /* parse the incrementor */
2577 if (parser->tok != ')') {
2578 increment = parse_expression_leave(parser, false, false, false);
2581 if (!ast_side_effects(increment)) {
2582 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2588 if (parser->tok != ')') {
2589 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2592 /* parse into the 'then' branch */
2593 if (!parser_next(parser)) {
2594 parseerror(parser, "expected for-loop body");
2597 if (!parse_statement_or_block(parser, &ontrue))
2601 cond = process_condition(parser, cond, &ifnot);
2605 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2606 *out = (ast_expression*)aloop;
2608 if (!parser_leaveblock(parser))
2612 if (initexpr) ast_delete(initexpr);
2613 if (cond) ast_delete(cond);
2614 if (increment) ast_delete(increment);
2615 (void)!parser_leaveblock(parser);
2619 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2621 ast_expression *exp = NULL;
2622 ast_return *ret = NULL;
2623 ast_value *expected = parser->function->vtype;
2625 lex_ctx ctx = parser_ctx(parser);
2627 (void)block; /* not touching */
2629 if (!parser_next(parser)) {
2630 parseerror(parser, "expected return expression");
2634 if (parser->tok != ';') {
2635 exp = parse_expression(parser, false, false);
2639 if (exp->expression.vtype != TYPE_NIL &&
2640 exp->expression.vtype != expected->expression.next->expression.vtype)
2642 parseerror(parser, "return with invalid expression");
2645 ret = ast_return_new(ctx, exp);
2651 if (!parser_next(parser))
2652 parseerror(parser, "parse error");
2653 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2654 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2656 ret = ast_return_new(ctx, NULL);
2658 *out = (ast_expression*)ret;
2662 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2665 unsigned int levels = 0;
2666 lex_ctx ctx = parser_ctx(parser);
2667 const char **loops = (is_continue ? parser->continues : parser->breaks);
2669 (void)block; /* not touching */
2670 if (!parser_next(parser)) {
2671 parseerror(parser, "expected semicolon or loop label");
2675 if (!vec_size(loops)) {
2677 parseerror(parser, "`continue` can only be used inside loops");
2679 parseerror(parser, "`break` can only be used inside loops or switches");
2682 if (parser->tok == TOKEN_IDENT) {
2683 if (!OPTS_FLAG(LOOP_LABELS))
2684 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2685 i = vec_size(loops);
2687 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2690 parseerror(parser, "no such loop to %s: `%s`",
2691 (is_continue ? "continue" : "break out of"),
2692 parser_tokval(parser));
2697 if (!parser_next(parser)) {
2698 parseerror(parser, "expected semicolon");
2703 if (parser->tok != ';') {
2704 parseerror(parser, "expected semicolon");
2708 if (!parser_next(parser))
2709 parseerror(parser, "parse error");
2711 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2715 /* returns true when it was a variable qualifier, false otherwise!
2716 * on error, cvq is set to CV_WRONG
2718 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2720 bool had_const = false;
2721 bool had_var = false;
2722 bool had_noref = false;
2723 bool had_attrib = false;
2724 bool had_static = false;
2729 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2731 /* parse an attribute */
2732 if (!parser_next(parser)) {
2733 parseerror(parser, "expected attribute after `[[`");
2737 if (!strcmp(parser_tokval(parser), "noreturn")) {
2738 flags |= AST_FLAG_NORETURN;
2739 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2740 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2745 else if (!strcmp(parser_tokval(parser), "noref")) {
2747 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2748 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2753 else if (!strcmp(parser_tokval(parser), "inline")) {
2754 flags |= AST_FLAG_INLINE;
2755 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2756 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2763 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2764 flags |= AST_FLAG_DEPRECATED;
2767 if (!parser_next(parser)) {
2768 parseerror(parser, "parse error in attribute");
2772 if (parser->tok == '(') {
2773 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2774 parseerror(parser, "`deprecated` attribute missing parameter");
2778 *message = util_strdup(parser_tokval(parser));
2780 if (!parser_next(parser)) {
2781 parseerror(parser, "parse error in attribute");
2785 if(parser->tok != ')') {
2786 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2790 if (!parser_next(parser)) {
2791 parseerror(parser, "parse error in attribute");
2796 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2797 parseerror(parser, "`deprecated` attribute expected `]]`");
2800 if (*message) mem_d(*message);
2808 /* Skip tokens until we hit a ]] */
2809 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2810 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2811 if (!parser_next(parser)) {
2812 parseerror(parser, "error inside attribute");
2819 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2821 else if (!strcmp(parser_tokval(parser), "const"))
2823 else if (!strcmp(parser_tokval(parser), "var"))
2825 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2827 else if (!strcmp(parser_tokval(parser), "noref"))
2829 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2834 if (!parser_next(parser))
2844 *is_static = had_static;
2848 parseerror(parser, "parse error after variable qualifier");
2853 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2854 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2859 /* skip the 'while' and get the body */
2860 if (!parser_next(parser)) {
2861 if (OPTS_FLAG(LOOP_LABELS))
2862 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2864 parseerror(parser, "expected 'switch' operand in parenthesis");
2868 if (parser->tok == ':') {
2869 if (!OPTS_FLAG(LOOP_LABELS))
2870 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2871 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2872 parseerror(parser, "expected loop label");
2875 label = util_strdup(parser_tokval(parser));
2876 if (!parser_next(parser)) {
2878 parseerror(parser, "expected 'switch' operand in parenthesis");
2883 if (parser->tok != '(') {
2884 parseerror(parser, "expected 'switch' operand in parenthesis");
2888 vec_push(parser->breaks, label);
2890 rv = parse_switch_go(parser, block, out);
2893 if (vec_last(parser->breaks) != label) {
2894 parseerror(parser, "internal error: label stack corrupted");
2900 vec_pop(parser->breaks);
2905 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
2907 ast_expression *operand;
2910 ast_switch *switchnode;
2911 ast_switch_case swcase;
2914 bool noref, is_static;
2915 uint32_t qflags = 0;
2917 lex_ctx ctx = parser_ctx(parser);
2919 (void)block; /* not touching */
2922 /* parse into the expression */
2923 if (!parser_next(parser)) {
2924 parseerror(parser, "expected switch operand");
2927 /* parse the operand */
2928 operand = parse_expression_leave(parser, false, false, false);
2932 switchnode = ast_switch_new(ctx, operand);
2935 if (parser->tok != ')') {
2936 ast_delete(switchnode);
2937 parseerror(parser, "expected closing paren after 'switch' operand");
2941 /* parse over the opening paren */
2942 if (!parser_next(parser) || parser->tok != '{') {
2943 ast_delete(switchnode);
2944 parseerror(parser, "expected list of cases");
2948 if (!parser_next(parser)) {
2949 ast_delete(switchnode);
2950 parseerror(parser, "expected 'case' or 'default'");
2954 /* new block; allow some variables to be declared here */
2955 parser_enterblock(parser);
2958 if (parser->tok == TOKEN_IDENT)
2959 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2960 if (typevar || parser->tok == TOKEN_TYPENAME) {
2961 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
2962 ast_delete(switchnode);
2967 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
2969 if (cvq == CV_WRONG) {
2970 ast_delete(switchnode);
2973 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
2974 ast_delete(switchnode);
2983 while (parser->tok != '}') {
2984 ast_block *caseblock;
2986 if (!strcmp(parser_tokval(parser), "case")) {
2987 if (!parser_next(parser)) {
2988 ast_delete(switchnode);
2989 parseerror(parser, "expected expression for case");
2992 swcase.value = parse_expression_leave(parser, false, false, false);
2993 if (!swcase.value) {
2994 ast_delete(switchnode);
2995 parseerror(parser, "expected expression for case");
2998 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2999 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3000 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3006 else if (!strcmp(parser_tokval(parser), "default")) {
3007 swcase.value = NULL;
3008 if (!parser_next(parser)) {
3009 ast_delete(switchnode);
3010 parseerror(parser, "expected colon");
3015 ast_delete(switchnode);
3016 parseerror(parser, "expected 'case' or 'default'");
3020 /* Now the colon and body */
3021 if (parser->tok != ':') {
3022 if (swcase.value) ast_unref(swcase.value);
3023 ast_delete(switchnode);
3024 parseerror(parser, "expected colon");
3028 if (!parser_next(parser)) {
3029 if (swcase.value) ast_unref(swcase.value);
3030 ast_delete(switchnode);
3031 parseerror(parser, "expected statements or case");
3034 caseblock = ast_block_new(parser_ctx(parser));
3036 if (swcase.value) ast_unref(swcase.value);
3037 ast_delete(switchnode);
3040 swcase.code = (ast_expression*)caseblock;
3041 vec_push(switchnode->cases, swcase);
3043 ast_expression *expr;
3044 if (parser->tok == '}')
3046 if (parser->tok == TOKEN_KEYWORD) {
3047 if (!strcmp(parser_tokval(parser), "case") ||
3048 !strcmp(parser_tokval(parser), "default"))
3053 if (!parse_statement(parser, caseblock, &expr, true)) {
3054 ast_delete(switchnode);
3059 if (!ast_block_add_expr(caseblock, expr)) {
3060 ast_delete(switchnode);
3066 parser_leaveblock(parser);
3069 if (parser->tok != '}') {
3070 ast_delete(switchnode);
3071 parseerror(parser, "expected closing paren of case list");
3074 if (!parser_next(parser)) {
3075 ast_delete(switchnode);
3076 parseerror(parser, "parse error after switch");
3079 *out = (ast_expression*)switchnode;
3083 /* parse computed goto sides */
3084 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3085 ast_expression *on_true;
3086 ast_expression *on_false;
3087 ast_expression *cond;
3092 if (ast_istype(*side, ast_ternary)) {
3093 ast_ternary *tern = (ast_ternary*)*side;
3094 on_true = parse_goto_computed(parser, &tern->on_true);
3095 on_false = parse_goto_computed(parser, &tern->on_false);
3097 if (!on_true || !on_false) {
3098 parseerror(parser, "expected label or expression in ternary");
3099 if (on_true) ast_unref(on_true);
3100 if (on_false) ast_unref(on_false);
3108 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3109 } else if (ast_istype(*side, ast_label)) {
3110 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3111 ast_goto_set_label(gt, ((ast_label*)*side));
3113 return (ast_expression*)gt;
3118 static bool parse_goto(parser_t *parser, ast_expression **out)
3120 ast_goto *gt = NULL;
3121 ast_expression *lbl;
3123 if (!parser_next(parser))
3126 if (parser->tok != TOKEN_IDENT) {
3127 ast_expression *expression;
3129 /* could be an expression i.e computed goto :-) */
3130 if (parser->tok != '(') {
3131 parseerror(parser, "expected label name after `goto`");
3135 /* failed to parse expression for goto */
3136 if (!(expression = parse_expression(parser, false, true)) ||
3137 !(*out = parse_goto_computed(parser, &expression))) {
3138 parseerror(parser, "invalid goto expression");
3139 ast_unref(expression);
3146 /* not computed goto */
3147 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3148 lbl = parser_find_label(parser, gt->name);
3150 if (!ast_istype(lbl, ast_label)) {
3151 parseerror(parser, "internal error: label is not an ast_label");
3155 ast_goto_set_label(gt, (ast_label*)lbl);
3158 vec_push(parser->gotos, gt);
3160 if (!parser_next(parser) || parser->tok != ';') {
3161 parseerror(parser, "semicolon expected after goto label");
3164 if (!parser_next(parser)) {
3165 parseerror(parser, "parse error after goto");
3169 *out = (ast_expression*)gt;
3173 static bool parse_skipwhite(parser_t *parser)
3176 if (!parser_next(parser))
3178 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3179 return parser->tok < TOKEN_ERROR;
3182 static bool parse_eol(parser_t *parser)
3184 if (!parse_skipwhite(parser))
3186 return parser->tok == TOKEN_EOL;
3189 static bool parse_pragma_do(parser_t *parser)
3191 if (!parser_next(parser) ||
3192 parser->tok != TOKEN_IDENT ||
3193 strcmp(parser_tokval(parser), "pragma"))
3195 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3198 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3199 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3203 if (!strcmp(parser_tokval(parser), "noref")) {
3204 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3205 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3208 parser->noref = !!parser_token(parser)->constval.i;
3209 if (!parse_eol(parser)) {
3210 parseerror(parser, "parse error after `noref` pragma");
3216 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3223 static bool parse_pragma(parser_t *parser)
3226 parser->lex->flags.preprocessing = true;
3227 parser->lex->flags.mergelines = true;
3228 rv = parse_pragma_do(parser);
3229 if (parser->tok != TOKEN_EOL) {
3230 parseerror(parser, "junk after pragma");
3233 parser->lex->flags.preprocessing = false;
3234 parser->lex->flags.mergelines = false;
3235 if (!parser_next(parser)) {
3236 parseerror(parser, "parse error after pragma");
3242 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3244 bool noref, is_static;
3246 uint32_t qflags = 0;
3247 ast_value *typevar = NULL;
3248 char *vstring = NULL;
3252 if (parser->tok == TOKEN_IDENT)
3253 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3255 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3257 /* local variable */
3259 parseerror(parser, "cannot declare a variable from here");
3262 if (opts.standard == COMPILER_QCC) {
3263 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3266 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3270 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3272 if (cvq == CV_WRONG)
3274 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3276 else if (parser->tok == TOKEN_KEYWORD)
3278 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3283 if (!parser_next(parser)) {
3284 parseerror(parser, "parse error after __builtin_debug_printtype");
3288 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3290 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3291 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3292 if (!parser_next(parser)) {
3293 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3299 if (!parse_statement(parser, block, out, allow_cases))
3302 con_out("__builtin_debug_printtype: got no output node\n");
3305 ast_type_to_string(*out, ty, sizeof(ty));
3306 con_out("__builtin_debug_printtype: `%s`\n", ty);
3311 else if (!strcmp(parser_tokval(parser), "return"))
3313 return parse_return(parser, block, out);
3315 else if (!strcmp(parser_tokval(parser), "if"))
3317 return parse_if(parser, block, out);
3319 else if (!strcmp(parser_tokval(parser), "while"))
3321 return parse_while(parser, block, out);
3323 else if (!strcmp(parser_tokval(parser), "do"))
3325 return parse_dowhile(parser, block, out);
3327 else if (!strcmp(parser_tokval(parser), "for"))
3329 if (opts.standard == COMPILER_QCC) {
3330 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3333 return parse_for(parser, block, out);
3335 else if (!strcmp(parser_tokval(parser), "break"))
3337 return parse_break_continue(parser, block, out, false);
3339 else if (!strcmp(parser_tokval(parser), "continue"))
3341 return parse_break_continue(parser, block, out, true);
3343 else if (!strcmp(parser_tokval(parser), "switch"))
3345 return parse_switch(parser, block, out);
3347 else if (!strcmp(parser_tokval(parser), "case") ||
3348 !strcmp(parser_tokval(parser), "default"))
3351 parseerror(parser, "unexpected 'case' label");
3356 else if (!strcmp(parser_tokval(parser), "goto"))
3358 return parse_goto(parser, out);
3360 else if (!strcmp(parser_tokval(parser), "typedef"))
3362 if (!parser_next(parser)) {
3363 parseerror(parser, "expected type definition after 'typedef'");
3366 return parse_typedef(parser);
3368 parseerror(parser, "Unexpected keyword");
3371 else if (parser->tok == '{')
3374 inner = parse_block(parser);
3377 *out = (ast_expression*)inner;
3380 else if (parser->tok == ':')
3384 if (!parser_next(parser)) {
3385 parseerror(parser, "expected label name");
3388 if (parser->tok != TOKEN_IDENT) {
3389 parseerror(parser, "label must be an identifier");
3392 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3394 if (!label->undefined) {
3395 parseerror(parser, "label `%s` already defined", label->name);
3398 label->undefined = false;
3401 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3402 vec_push(parser->labels, label);
3404 *out = (ast_expression*)label;
3405 if (!parser_next(parser)) {
3406 parseerror(parser, "parse error after label");
3409 for (i = 0; i < vec_size(parser->gotos); ++i) {
3410 if (!strcmp(parser->gotos[i]->name, label->name)) {
3411 ast_goto_set_label(parser->gotos[i], label);
3412 vec_remove(parser->gotos, i, 1);
3418 else if (parser->tok == ';')
3420 if (!parser_next(parser)) {
3421 parseerror(parser, "parse error after empty statement");
3428 ast_expression *exp = parse_expression(parser, false, false);
3432 if (!ast_side_effects(exp)) {
3433 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3440 static bool parse_enum(parser_t *parser)
3443 ast_value **values = NULL;
3444 ast_value *var = NULL;
3447 ast_expression *old;
3449 if (!parser_next(parser) || parser->tok != '{') {
3450 parseerror(parser, "expected `{` after `enum` keyword");
3455 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3456 if (parser->tok == '}') {
3457 /* allow an empty enum */
3460 parseerror(parser, "expected identifier or `}`");
3464 old = parser_find_field(parser, parser_tokval(parser));
3466 old = parser_find_global(parser, parser_tokval(parser));
3468 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3469 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3473 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3474 vec_push(values, var);
3475 var->cvq = CV_CONST;
3476 var->hasvalue = true;
3477 var->constval.vfloat = num++;
3479 parser_addglobal(parser, var->name, (ast_expression*)var);
3481 if (!parser_next(parser)) {
3482 parseerror(parser, "expected `=`, `}` or comma after identifier");
3486 if (parser->tok == ',')
3488 if (parser->tok == '}')
3490 if (parser->tok != '=') {
3491 parseerror(parser, "expected `=`, `}` or comma after identifier");
3495 if (!parser_next(parser)) {
3496 parseerror(parser, "expected expression after `=`");
3500 /* We got a value! */
3501 old = parse_expression_leave(parser, true, false, false);
3502 asvalue = (ast_value*)old;
3503 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3504 compile_error(ast_ctx(var), "constant value or expression expected");
3507 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3509 if (parser->tok == '}')
3511 if (parser->tok != ',') {
3512 parseerror(parser, "expected `}` or comma after expression");
3517 if (parser->tok != '}') {
3518 parseerror(parser, "internal error: breaking without `}`");
3522 if (!parser_next(parser) || parser->tok != ';') {
3523 parseerror(parser, "expected semicolon after enumeration");
3527 if (!parser_next(parser)) {
3528 parseerror(parser, "parse error after enumeration");
3540 static bool parse_block_into(parser_t *parser, ast_block *block)
3544 parser_enterblock(parser);
3546 if (!parser_next(parser)) { /* skip the '{' */
3547 parseerror(parser, "expected function body");
3551 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3553 ast_expression *expr = NULL;
3554 if (parser->tok == '}')
3557 if (!parse_statement(parser, block, &expr, false)) {
3558 /* parseerror(parser, "parse error"); */
3564 if (!ast_block_add_expr(block, expr)) {
3571 if (parser->tok != '}') {
3574 (void)parser_next(parser);
3578 if (!parser_leaveblock(parser))
3580 return retval && !!block;
3583 static ast_block* parse_block(parser_t *parser)
3586 block = ast_block_new(parser_ctx(parser));
3589 if (!parse_block_into(parser, block)) {
3590 ast_block_delete(block);
3596 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3598 if (parser->tok == '{') {
3599 *out = (ast_expression*)parse_block(parser);
3602 return parse_statement(parser, NULL, out, false);
3605 static bool create_vector_members(ast_value *var, ast_member **me)
3608 size_t len = strlen(var->name);
3610 for (i = 0; i < 3; ++i) {
3611 char *name = (char*)mem_a(len+3);
3612 memcpy(name, var->name, len);
3614 name[len+1] = 'x'+i;
3616 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3625 do { ast_member_delete(me[--i]); } while(i);
3629 static bool parse_function_body(parser_t *parser, ast_value *var)
3631 ast_block *block = NULL;
3636 ast_expression *framenum = NULL;
3637 ast_expression *nextthink = NULL;
3638 /* None of the following have to be deleted */
3639 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3640 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3641 bool has_frame_think;
3645 has_frame_think = false;
3646 old = parser->function;
3648 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3649 parseerror(parser, "gotos/labels leaking");
3653 if (var->expression.flags & AST_FLAG_VARIADIC) {
3654 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3655 "variadic function with implementation will not be able to access additional parameters"))
3661 if (parser->tok == '[') {
3662 /* got a frame definition: [ framenum, nextthink ]
3663 * this translates to:
3664 * self.frame = framenum;
3665 * self.nextthink = time + 0.1;
3666 * self.think = nextthink;
3670 fld_think = parser_find_field(parser, "think");
3671 fld_nextthink = parser_find_field(parser, "nextthink");
3672 fld_frame = parser_find_field(parser, "frame");
3673 if (!fld_think || !fld_nextthink || !fld_frame) {
3674 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3675 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3678 gbl_time = parser_find_global(parser, "time");
3679 gbl_self = parser_find_global(parser, "self");
3680 if (!gbl_time || !gbl_self) {
3681 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3682 parseerror(parser, "please declare the following globals: `time`, `self`");
3686 if (!parser_next(parser))
3689 framenum = parse_expression_leave(parser, true, false, false);
3691 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3694 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3695 ast_unref(framenum);
3696 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3700 if (parser->tok != ',') {
3701 ast_unref(framenum);
3702 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3703 parseerror(parser, "Got a %i\n", parser->tok);
3707 if (!parser_next(parser)) {
3708 ast_unref(framenum);
3712 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3714 /* qc allows the use of not-yet-declared functions here
3715 * - this automatically creates a prototype */
3716 ast_value *thinkfunc;
3717 ast_expression *functype = fld_think->expression.next;
3719 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3720 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3721 ast_unref(framenum);
3722 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3726 if (!parser_next(parser)) {
3727 ast_unref(framenum);
3728 ast_delete(thinkfunc);
3732 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3734 nextthink = (ast_expression*)thinkfunc;
3737 nextthink = parse_expression_leave(parser, true, false, false);
3739 ast_unref(framenum);
3740 parseerror(parser, "expected a think-function in [frame,think] notation");
3745 if (!ast_istype(nextthink, ast_value)) {
3746 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3750 if (retval && parser->tok != ']') {
3751 parseerror(parser, "expected closing `]` for [frame,think] notation");
3755 if (retval && !parser_next(parser)) {
3759 if (retval && parser->tok != '{') {
3760 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3765 ast_unref(nextthink);
3766 ast_unref(framenum);
3770 has_frame_think = true;
3773 block = ast_block_new(parser_ctx(parser));
3775 parseerror(parser, "failed to allocate block");
3776 if (has_frame_think) {
3777 ast_unref(nextthink);
3778 ast_unref(framenum);
3783 if (has_frame_think) {
3785 ast_expression *self_frame;
3786 ast_expression *self_nextthink;
3787 ast_expression *self_think;
3788 ast_expression *time_plus_1;
3789 ast_store *store_frame;
3790 ast_store *store_nextthink;
3791 ast_store *store_think;
3793 ctx = parser_ctx(parser);
3794 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3795 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3796 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3798 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3799 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3801 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3802 if (self_frame) ast_delete(self_frame);
3803 if (self_nextthink) ast_delete(self_nextthink);
3804 if (self_think) ast_delete(self_think);
3805 if (time_plus_1) ast_delete(time_plus_1);
3811 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3812 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3813 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3816 ast_delete(self_frame);
3819 if (!store_nextthink) {
3820 ast_delete(self_nextthink);
3824 ast_delete(self_think);
3828 if (store_frame) ast_delete(store_frame);
3829 if (store_nextthink) ast_delete(store_nextthink);
3830 if (store_think) ast_delete(store_think);
3833 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3834 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3835 !ast_block_add_expr(block, (ast_expression*)store_think))
3842 parseerror(parser, "failed to generate code for [frame,think]");
3843 ast_unref(nextthink);
3844 ast_unref(framenum);
3850 parser_enterblock(parser);
3852 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3854 ast_value *param = var->expression.params[parami];
3857 if (param->expression.vtype != TYPE_VECTOR &&
3858 (param->expression.vtype != TYPE_FIELD ||
3859 param->expression.next->expression.vtype != TYPE_VECTOR))
3864 if (!create_vector_members(param, me)) {
3865 ast_block_delete(block);
3869 for (e = 0; e < 3; ++e) {
3870 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3871 ast_block_collect(block, (ast_expression*)me[e]);
3875 func = ast_function_new(ast_ctx(var), var->name, var);
3877 parseerror(parser, "failed to allocate function for `%s`", var->name);
3878 ast_block_delete(block);
3881 vec_push(parser->functions, func);
3883 if (var->expression.flags & AST_FLAG_VARIADIC) {
3885 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
3886 varargs->expression.flags |= AST_FLAG_IS_VARARG;
3887 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
3888 varargs->expression.count = 0;
3889 snprintf(name, sizeof(name), "%s##va##SET", var->name);
3890 if (!parser_create_array_setter_proto(parser, varargs, name)) {
3891 ast_delete(varargs);
3892 ast_block_delete(block);
3895 snprintf(name, sizeof(name), "%s##va##GET", var->name);
3896 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
3897 ast_delete(varargs);
3898 ast_block_delete(block);
3901 func->varargs = varargs;
3904 parser->function = func;
3905 if (!parse_block_into(parser, block)) {
3906 ast_block_delete(block);
3910 vec_push(func->blocks, block);
3912 parser->function = old;
3913 if (!parser_leaveblock(parser))
3915 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3916 parseerror(parser, "internal error: local scopes left");
3920 if (parser->tok == ';')
3921 return parser_next(parser);
3922 else if (opts.standard == COMPILER_QCC)
3923 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3927 vec_pop(parser->functions);
3928 ast_function_delete(func);
3929 var->constval.vfunc = NULL;
3932 (void)!parser_leaveblock(parser);
3933 parser->function = old;
3937 static ast_expression *array_accessor_split(
3942 ast_expression *left,
3943 ast_expression *right
3949 lex_ctx ctx = ast_ctx(array);
3951 if (!left || !right) {
3952 if (left) ast_delete(left);
3953 if (right) ast_delete(right);
3957 cmp = ast_binary_new(ctx, INSTR_LT,
3958 (ast_expression*)index,
3959 (ast_expression*)parser_const_float(parser, middle));
3963 parseerror(parser, "internal error: failed to create comparison for array setter");
3967 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3969 ast_delete(cmp); /* will delete left and right */
3970 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3974 return (ast_expression*)ifthen;
3977 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3979 lex_ctx ctx = ast_ctx(array);
3981 if (from+1 == afterend) {
3982 /* set this value */
3985 ast_array_index *subscript;
3987 int assignop = type_store_instr[value->expression.vtype];
3989 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3990 assignop = INSTR_STORE_V;
3992 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3996 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3998 ast_delete(subscript);
4002 block = ast_block_new(ctx);
4008 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4013 ret = ast_return_new(ctx, NULL);
4019 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4024 return (ast_expression*)block;
4026 ast_expression *left, *right;
4027 size_t diff = afterend - from;
4028 size_t middle = from + diff/2;
4029 left = array_setter_node(parser, array, index, value, from, middle);
4030 right = array_setter_node(parser, array, index, value, middle, afterend);
4031 return array_accessor_split(parser, array, index, middle, left, right);
4035 static ast_expression *array_field_setter_node(
4044 lex_ctx ctx = ast_ctx(array);
4046 if (from+1 == afterend) {
4047 /* set this value */
4050 ast_entfield *entfield;
4051 ast_array_index *subscript;
4053 int assignop = type_storep_instr[value->expression.vtype];
4055 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
4056 assignop = INSTR_STOREP_V;
4058 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4062 entfield = ast_entfield_new_force(ctx,
4063 (ast_expression*)entity,
4064 (ast_expression*)subscript,
4065 (ast_expression*)subscript);
4067 ast_delete(subscript);
4071 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4073 ast_delete(entfield);
4077 block = ast_block_new(ctx);
4083 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4088 ret = ast_return_new(ctx, NULL);
4094 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4099 return (ast_expression*)block;
4101 ast_expression *left, *right;
4102 size_t diff = afterend - from;
4103 size_t middle = from + diff/2;
4104 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4105 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4106 return array_accessor_split(parser, array, index, middle, left, right);
4110 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4112 lex_ctx ctx = ast_ctx(array);
4114 if (from+1 == afterend) {
4116 ast_array_index *subscript;
4118 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4122 ret = ast_return_new(ctx, (ast_expression*)subscript);
4124 ast_delete(subscript);
4128 return (ast_expression*)ret;
4130 ast_expression *left, *right;
4131 size_t diff = afterend - from;
4132 size_t middle = from + diff/2;
4133 left = array_getter_node(parser, array, index, from, middle);
4134 right = array_getter_node(parser, array, index, middle, afterend);
4135 return array_accessor_split(parser, array, index, middle, left, right);
4139 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4141 ast_function *func = NULL;
4142 ast_value *fval = NULL;
4143 ast_block *body = NULL;
4145 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4147 parseerror(parser, "failed to create accessor function value");
4151 func = ast_function_new(ast_ctx(array), funcname, fval);
4154 parseerror(parser, "failed to create accessor function node");
4158 body = ast_block_new(ast_ctx(array));
4160 parseerror(parser, "failed to create block for array accessor");
4166 vec_push(func->blocks, body);
4169 vec_push(parser->accessors, fval);
4174 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4176 ast_value *index = NULL;
4177 ast_value *value = NULL;
4181 if (!ast_istype(array->expression.next, ast_value)) {
4182 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4186 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4188 func = fval->constval.vfunc;
4189 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4191 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4192 value = ast_value_copy((ast_value*)array->expression.next);
4194 if (!index || !value) {
4195 parseerror(parser, "failed to create locals for array accessor");
4198 (void)!ast_value_set_name(value, "value"); /* not important */
4199 vec_push(fval->expression.params, index);
4200 vec_push(fval->expression.params, value);
4202 array->setter = fval;
4205 if (index) ast_delete(index);
4206 if (value) ast_delete(value);
4212 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4214 ast_expression *root = NULL;
4215 root = array_setter_node(parser, array,
4216 array->setter->expression.params[0],
4217 array->setter->expression.params[1],
4218 0, array->expression.count);
4220 parseerror(parser, "failed to build accessor search tree");
4223 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4230 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4232 if (!parser_create_array_setter_proto(parser, array, funcname))
4234 return parser_create_array_setter_impl(parser, array);
4237 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4239 ast_expression *root = NULL;
4240 ast_value *entity = NULL;
4241 ast_value *index = NULL;
4242 ast_value *value = NULL;
4246 if (!ast_istype(array->expression.next, ast_value)) {
4247 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4251 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4253 func = fval->constval.vfunc;
4254 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4256 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4257 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4258 value = ast_value_copy((ast_value*)array->expression.next);
4259 if (!entity || !index || !value) {
4260 parseerror(parser, "failed to create locals for array accessor");
4263 (void)!ast_value_set_name(value, "value"); /* not important */
4264 vec_push(fval->expression.params, entity);
4265 vec_push(fval->expression.params, index);
4266 vec_push(fval->expression.params, value);
4268 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4270 parseerror(parser, "failed to build accessor search tree");
4274 array->setter = fval;
4275 return ast_block_add_expr(func->blocks[0], root);
4277 if (entity) ast_delete(entity);
4278 if (index) ast_delete(index);
4279 if (value) ast_delete(value);
4280 if (root) ast_delete(root);
4286 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4288 ast_value *index = NULL;
4292 /* NOTE: checking array->expression.next rather than elemtype since
4293 * for fields elemtype is a temporary fieldtype.
4295 if (!ast_istype(array->expression.next, ast_value)) {
4296 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4300 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4302 func = fval->constval.vfunc;
4303 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4305 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4308 parseerror(parser, "failed to create locals for array accessor");
4311 vec_push(fval->expression.params, index);
4313 array->getter = fval;
4316 if (index) ast_delete(index);
4322 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4324 ast_expression *root = NULL;
4326 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4328 parseerror(parser, "failed to build accessor search tree");
4331 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4338 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4340 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4342 return parser_create_array_getter_impl(parser, array);
4345 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4346 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4354 bool variadic = false;
4355 ast_value *varparam = NULL;
4356 char *argcounter = NULL;
4358 ctx = parser_ctx(parser);
4360 /* for the sake of less code we parse-in in this function */
4361 if (!parser_next(parser)) {
4362 parseerror(parser, "expected parameter list");
4368 /* parse variables until we hit a closing paren */
4369 while (parser->tok != ')') {
4371 /* there must be commas between them */
4372 if (parser->tok != ',') {
4373 parseerror(parser, "expected comma or end of parameter list");
4376 if (!parser_next(parser)) {
4377 parseerror(parser, "expected parameter");
4383 if (parser->tok == TOKEN_DOTS) {
4384 /* '...' indicates a varargs function */
4386 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4387 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4390 if (parser->tok == TOKEN_IDENT) {
4391 argcounter = util_strdup(parser_tokval(parser));
4392 if (!parser_next(parser) || parser->tok != ')') {
4393 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4400 /* for anything else just parse a typename */
4401 param = parse_typename(parser, NULL, NULL);
4404 vec_push(params, param);
4405 if (param->expression.vtype >= TYPE_VARIANT) {
4406 char tname[1024]; /* typename is reserved in C++ */
4407 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4408 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4411 /* type-restricted varargs */
4412 if (parser->tok == TOKEN_DOTS) {
4414 varparam = vec_last(params);
4416 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4417 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4420 if (parser->tok == TOKEN_IDENT) {
4421 argcounter = util_strdup(parser_tokval(parser));
4422 if (!parser_next(parser) || parser->tok != ')') {
4423 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4431 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4435 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
4436 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4439 if (!parser_next(parser)) {
4440 parseerror(parser, "parse error after typename");
4444 /* now turn 'var' into a function type */
4445 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4446 fval->expression.next = (ast_expression*)var;
4448 fval->expression.flags |= AST_FLAG_VARIADIC;
4451 var->expression.params = params;
4452 var->expression.varparam = (ast_expression*)varparam;
4453 var->argcounter = argcounter;
4462 for (i = 0; i < vec_size(params); ++i)
4463 ast_delete(params[i]);
4468 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4470 ast_expression *cexp;
4471 ast_value *cval, *tmp;
4474 ctx = parser_ctx(parser);
4476 if (!parser_next(parser)) {
4478 parseerror(parser, "expected array-size");
4482 cexp = parse_expression_leave(parser, true, false, false);
4484 if (!cexp || !ast_istype(cexp, ast_value)) {
4488 parseerror(parser, "expected array-size as constant positive integer");
4491 cval = (ast_value*)cexp;
4493 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4494 tmp->expression.next = (ast_expression*)var;
4497 if (cval->expression.vtype == TYPE_INTEGER)
4498 tmp->expression.count = cval->constval.vint;
4499 else if (cval->expression.vtype == TYPE_FLOAT)
4500 tmp->expression.count = cval->constval.vfloat;
4504 parseerror(parser, "array-size must be a positive integer constant");
4509 if (parser->tok != ']') {
4511 parseerror(parser, "expected ']' after array-size");
4514 if (!parser_next(parser)) {
4516 parseerror(parser, "error after parsing array size");
4522 /* Parse a complete typename.
4523 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4524 * but when parsing variables separated by comma
4525 * 'storebase' should point to where the base-type should be kept.
4526 * The base type makes up every bit of type information which comes *before* the
4529 * The following will be parsed in its entirety:
4531 * The 'basetype' in this case is 'void()'
4532 * and if there's a comma after it, say:
4534 * then the type-information 'void()' can be stored in 'storebase'
4536 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4538 ast_value *var, *tmp;
4541 const char *name = NULL;
4542 bool isfield = false;
4543 bool wasarray = false;
4544 size_t morefields = 0;
4546 ctx = parser_ctx(parser);
4548 /* types may start with a dot */
4549 if (parser->tok == '.') {
4551 /* if we parsed a dot we need a typename now */
4552 if (!parser_next(parser)) {
4553 parseerror(parser, "expected typename for field definition");
4557 /* Further dots are handled seperately because they won't be part of the
4560 while (parser->tok == '.') {
4562 if (!parser_next(parser)) {
4563 parseerror(parser, "expected typename for field definition");
4568 if (parser->tok == TOKEN_IDENT)
4569 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4570 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4571 parseerror(parser, "expected typename");
4575 /* generate the basic type value */
4576 if (cached_typedef) {
4577 var = ast_value_copy(cached_typedef);
4578 ast_value_set_name(var, "<type(from_def)>");
4580 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4582 for (; morefields; --morefields) {
4583 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4584 tmp->expression.next = (ast_expression*)var;
4588 /* do not yet turn into a field - remember:
4589 * .void() foo; is a field too
4590 * .void()() foo; is a function
4594 if (!parser_next(parser)) {
4596 parseerror(parser, "parse error after typename");
4600 /* an opening paren now starts the parameter-list of a function
4601 * this is where original-QC has parameter lists.
4602 * We allow a single parameter list here.
4603 * Much like fteqcc we don't allow `float()() x`
4605 if (parser->tok == '(') {
4606 var = parse_parameter_list(parser, var);
4611 /* store the base if requested */
4613 *storebase = ast_value_copy(var);
4615 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4616 tmp->expression.next = (ast_expression*)*storebase;
4621 /* there may be a name now */
4622 if (parser->tok == TOKEN_IDENT) {
4623 name = util_strdup(parser_tokval(parser));
4625 if (!parser_next(parser)) {
4627 parseerror(parser, "error after variable or field declaration");
4632 /* now this may be an array */
4633 if (parser->tok == '[') {
4635 var = parse_arraysize(parser, var);
4640 /* This is the point where we can turn it into a field */
4642 /* turn it into a field if desired */
4643 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4644 tmp->expression.next = (ast_expression*)var;
4648 /* now there may be function parens again */
4649 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
4650 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4651 if (parser->tok == '(' && wasarray)
4652 parseerror(parser, "arrays as part of a return type is not supported");
4653 while (parser->tok == '(') {
4654 var = parse_parameter_list(parser, var);
4663 /* finally name it */
4665 if (!ast_value_set_name(var, name)) {
4667 parseerror(parser, "internal error: failed to set name");
4670 /* free the name, ast_value_set_name duplicates */
4677 static bool parse_typedef(parser_t *parser)
4679 ast_value *typevar, *oldtype;
4680 ast_expression *old;
4682 typevar = parse_typename(parser, NULL, NULL);
4687 if ( (old = parser_find_var(parser, typevar->name)) ) {
4688 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4689 " -> `%s` has been declared here: %s:%i",
4690 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4691 ast_delete(typevar);
4695 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4696 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4697 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4698 ast_delete(typevar);
4702 vec_push(parser->_typedefs, typevar);
4703 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4705 if (parser->tok != ';') {
4706 parseerror(parser, "expected semicolon after typedef");
4709 if (!parser_next(parser)) {
4710 parseerror(parser, "parse error after typedef");
4717 static const char *cvq_to_str(int cvq) {
4719 case CV_NONE: return "none";
4720 case CV_VAR: return "`var`";
4721 case CV_CONST: return "`const`";
4722 default: return "<INVALID>";
4726 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4729 if (proto->cvq != var->cvq) {
4730 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4731 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4732 parser->tok == '='))
4734 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4735 "`%s` declared with different qualifiers: %s\n"
4736 " -> previous declaration here: %s:%i uses %s",
4737 var->name, cvq_to_str(var->cvq),
4738 ast_ctx(proto).file, ast_ctx(proto).line,
4739 cvq_to_str(proto->cvq));
4742 av = (var ->expression.flags & AST_FLAG_NORETURN);
4743 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4745 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4746 "`%s` declared with different attributes%s\n"
4747 " -> previous declaration here: %s:%i",
4748 var->name, (av ? ": noreturn" : ""),
4749 ast_ctx(proto).file, ast_ctx(proto).line,
4750 (ao ? ": noreturn" : ""));
4755 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)
4759 ast_expression *old;
4763 ast_value *basetype = NULL;
4765 bool isparam = false;
4766 bool isvector = false;
4767 bool cleanvar = true;
4768 bool wasarray = false;
4772 if (!localblock && is_static)
4773 parseerror(parser, "`static` qualifier is not supported in global scope");
4775 /* get the first complete variable */
4776 var = parse_typename(parser, &basetype, cached_typedef);
4779 ast_delete(basetype);
4787 /* Part 0: finish the type */
4788 if (parser->tok == '(') {
4789 if (opts.standard == COMPILER_QCC)
4790 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4791 var = parse_parameter_list(parser, var);
4797 /* we only allow 1-dimensional arrays */
4798 if (parser->tok == '[') {
4800 var = parse_arraysize(parser, var);
4806 if (parser->tok == '(' && wasarray) {
4807 parseerror(parser, "arrays as part of a return type is not supported");
4808 /* we'll still parse the type completely for now */
4810 /* for functions returning functions */
4811 while (parser->tok == '(') {
4812 if (opts.standard == COMPILER_QCC)
4813 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4814 var = parse_parameter_list(parser, var);
4821 var->cvq = qualifier;
4822 var->expression.flags |= qflags;
4823 if (var->expression.flags & AST_FLAG_DEPRECATED)
4824 var->desc = vstring;
4827 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4828 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4829 * is then filled with the previous definition and the parameter-names replaced.
4831 if (!strcmp(var->name, "nil")) {
4832 if (OPTS_FLAG(UNTYPED_NIL)) {
4833 if (!localblock || !OPTS_FLAG(PERMISSIVE))
4834 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
4836 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
4839 /* Deal with end_sys_ vars */
4841 if (!strcmp(var->name, "end_sys_globals")) {
4843 parser->crc_globals = vec_size(parser->globals);
4846 else if (!strcmp(var->name, "end_sys_fields")) {
4848 parser->crc_fields = vec_size(parser->fields);
4851 if (was_end && var->expression.vtype == TYPE_FIELD) {
4852 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4853 "global '%s' hint should not be a field",
4854 parser_tokval(parser)))
4861 if (!nofields && var->expression.vtype == TYPE_FIELD)
4863 /* deal with field declarations */
4864 old = parser_find_field(parser, var->name);
4866 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4867 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
4876 parseerror(parser, "field `%s` already declared here: %s:%i",
4877 var->name, ast_ctx(old).file, ast_ctx(old).line);
4882 if (opts.standard == COMPILER_QCC &&
4883 (old = parser_find_global(parser, var->name)))
4885 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4886 parseerror(parser, "field `%s` already declared here: %s:%i",
4887 var->name, ast_ctx(old).file, ast_ctx(old).line);
4894 /* deal with other globals */
4895 old = parser_find_global(parser, var->name);
4896 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
4898 /* This is a function which had a prototype */
4899 if (!ast_istype(old, ast_value)) {
4900 parseerror(parser, "internal error: prototype is not an ast_value");
4904 proto = (ast_value*)old;
4905 proto->desc = var->desc;
4906 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
4907 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
4909 ast_ctx(proto).file, ast_ctx(proto).line);
4913 /* we need the new parameter-names */
4914 for (i = 0; i < vec_size(proto->expression.params); ++i)
4915 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4916 if (!parser_check_qualifiers(parser, var, proto)) {
4923 proto->expression.flags |= var->expression.flags;
4931 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4932 "global `%s` already declared here: %s:%i",
4933 var->name, ast_ctx(old).file, ast_ctx(old).line))
4938 proto = (ast_value*)old;
4939 if (!ast_istype(old, ast_value)) {
4940 parseerror(parser, "internal error: not an ast_value");
4945 if (!parser_check_qualifiers(parser, var, proto)) {
4950 proto->expression.flags |= var->expression.flags;
4954 if (opts.standard == COMPILER_QCC &&
4955 (old = parser_find_field(parser, var->name)))
4957 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4958 parseerror(parser, "global `%s` already declared here: %s:%i",
4959 var->name, ast_ctx(old).file, ast_ctx(old).line);
4966 else /* it's not a global */
4968 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4969 if (old && !isparam) {
4970 parseerror(parser, "local `%s` already declared here: %s:%i",
4971 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4975 old = parser_find_local(parser, var->name, 0, &isparam);
4976 if (old && isparam) {
4977 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4978 "local `%s` is shadowing a parameter", var->name))
4980 parseerror(parser, "local `%s` already declared here: %s:%i",
4981 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4985 if (opts.standard != COMPILER_GMQCC) {
4993 /* in a noref section we simply bump the usecount */
4994 if (noref || parser->noref)
4998 * Create the global/local, and deal with vector types.
5001 if (var->expression.vtype == TYPE_VECTOR)
5003 else if (var->expression.vtype == TYPE_FIELD &&
5004 var->expression.next->expression.vtype == TYPE_VECTOR)
5008 if (!create_vector_members(var, me)) {
5015 /* deal with global variables, fields, functions */
5016 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5017 var->isfield = true;
5018 vec_push(parser->fields, (ast_expression*)var);
5019 util_htset(parser->htfields, var->name, var);
5021 for (i = 0; i < 3; ++i) {
5022 vec_push(parser->fields, (ast_expression*)me[i]);
5023 util_htset(parser->htfields, me[i]->name, me[i]);
5028 parser_addglobal(parser, var->name, (ast_expression*)var);
5030 for (i = 0; i < 3; ++i) {
5031 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5037 /* a static adds itself to be generated like any other global
5038 * but is added to the local namespace instead
5040 char *defname = NULL;
5041 size_t prefix_len, ln;
5043 ln = strlen(parser->function->name);
5044 vec_append(defname, ln, parser->function->name);
5046 vec_append(defname, 2, "::");
5047 /* remember the length up to here */
5048 prefix_len = vec_size(defname);
5050 /* Add it to the local scope */
5051 util_htset(vec_last(parser->variables), var->name, (void*)var);
5055 vec_last(parser->correct_variables),
5056 &vec_last(parser->correct_variables_score),
5060 /* now rename the global */
5061 ln = strlen(var->name);
5062 vec_append(defname, ln, var->name);
5063 ast_value_set_name(var, defname);
5065 /* push it to the to-be-generated globals */
5066 vec_push(parser->globals, (ast_expression*)var);
5068 /* same game for the vector members */
5070 for (i = 0; i < 3; ++i) {
5071 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5075 vec_last(parser->correct_variables),
5076 &vec_last(parser->correct_variables_score),
5080 vec_shrinkto(defname, prefix_len);
5081 ln = strlen(me[i]->name);
5082 vec_append(defname, ln, me[i]->name);
5083 ast_member_set_name(me[i], defname);
5085 vec_push(parser->globals, (ast_expression*)me[i]);
5090 vec_push(localblock->locals, var);
5091 parser_addlocal(parser, var->name, (ast_expression*)var);
5093 for (i = 0; i < 3; ++i) {
5094 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5095 ast_block_collect(localblock, (ast_expression*)me[i]);
5101 me[0] = me[1] = me[2] = NULL;
5106 if (var->expression.vtype == TYPE_ARRAY) {
5108 snprintf(name, sizeof(name), "%s##SET", var->name);
5109 if (!parser_create_array_setter(parser, var, name))
5111 snprintf(name, sizeof(name), "%s##GET", var->name);
5112 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5115 else if (!localblock && !nofields &&
5116 var->expression.vtype == TYPE_FIELD &&
5117 var->expression.next->expression.vtype == TYPE_ARRAY)
5120 ast_expression *telem;
5122 ast_value *array = (ast_value*)var->expression.next;
5124 if (!ast_istype(var->expression.next, ast_value)) {
5125 parseerror(parser, "internal error: field element type must be an ast_value");
5129 snprintf(name, sizeof(name), "%s##SETF", var->name);
5130 if (!parser_create_array_field_setter(parser, array, name))
5133 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5134 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5135 tfield->expression.next = telem;
5136 snprintf(name, sizeof(name), "%s##GETFP", var->name);
5137 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5145 if (parser->tok == ';') {
5146 ast_delete(basetype);
5147 if (!parser_next(parser)) {
5148 parseerror(parser, "error after variable declaration");
5154 if (parser->tok == ',')
5158 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5161 parseerror(parser, "missing comma or semicolon while parsing variables");
5165 if (localblock && opts.standard == COMPILER_QCC) {
5166 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5167 "initializing expression turns variable `%s` into a constant in this standard",
5174 if (parser->tok != '{') {
5175 if (parser->tok != '=') {
5176 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5180 if (!parser_next(parser)) {
5181 parseerror(parser, "error parsing initializer");
5185 else if (opts.standard == COMPILER_QCC) {
5186 parseerror(parser, "expected '=' before function body in this standard");
5189 if (parser->tok == '#') {
5190 ast_function *func = NULL;
5193 parseerror(parser, "cannot declare builtins within functions");
5196 if (var->expression.vtype != TYPE_FUNCTION) {
5197 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5200 if (!parser_next(parser)) {
5201 parseerror(parser, "expected builtin number");
5204 if (parser->tok != TOKEN_INTCONST) {
5205 parseerror(parser, "builtin number must be an integer constant");
5208 if (parser_token(parser)->constval.i < 0) {
5209 parseerror(parser, "builtin number must be an integer greater than zero");
5213 if (var->hasvalue) {
5214 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5215 "builtin `%s` has already been defined\n"
5216 " -> previous declaration here: %s:%i",
5217 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5221 func = ast_function_new(ast_ctx(var), var->name, var);
5223 parseerror(parser, "failed to allocate function for `%s`", var->name);
5226 vec_push(parser->functions, func);
5228 func->builtin = -parser_token(parser)->constval.i-1;
5231 if (!parser_next(parser)) {
5232 parseerror(parser, "expected comma or semicolon");
5234 ast_function_delete(func);
5235 var->constval.vfunc = NULL;
5239 else if (parser->tok == '{' || parser->tok == '[')
5242 parseerror(parser, "cannot declare functions within functions");
5247 ast_ctx(proto) = parser_ctx(parser);
5249 if (!parse_function_body(parser, var))
5251 ast_delete(basetype);
5252 for (i = 0; i < vec_size(parser->gotos); ++i)
5253 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5254 vec_free(parser->gotos);
5255 vec_free(parser->labels);
5258 ast_expression *cexp;
5261 cexp = parse_expression_leave(parser, true, false, false);
5266 cval = (ast_value*)cexp;
5267 if (cval != parser->nil &&
5268 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5271 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5275 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5276 qualifier != CV_VAR)
5278 var->cvq = CV_CONST;
5280 if (cval == parser->nil)
5281 var->expression.flags |= AST_FLAG_INITIALIZED;
5284 var->hasvalue = true;
5285 if (cval->expression.vtype == TYPE_STRING)
5286 var->constval.vstring = parser_strdup(cval->constval.vstring);
5287 else if (cval->expression.vtype == TYPE_FIELD)
5288 var->constval.vfield = cval;
5290 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5296 shunt sy = { NULL, NULL };
5299 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5300 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5301 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5302 if (!parser_sy_apply_operator(parser, &sy))
5305 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5306 parseerror(parser, "internal error: leaked operands");
5307 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5317 if (parser->tok == ',') {
5318 if (!parser_next(parser)) {
5319 parseerror(parser, "expected another variable");
5323 if (parser->tok != TOKEN_IDENT) {
5324 parseerror(parser, "expected another variable");
5327 var = ast_value_copy(basetype);
5329 ast_value_set_name(var, parser_tokval(parser));
5330 if (!parser_next(parser)) {
5331 parseerror(parser, "error parsing variable declaration");
5337 if (parser->tok != ';') {
5338 parseerror(parser, "missing semicolon after variables");
5342 if (!parser_next(parser)) {
5343 parseerror(parser, "parse error after variable declaration");
5347 ast_delete(basetype);
5351 if (cleanvar && var)
5353 ast_delete(basetype);
5357 ast_delete(basetype);
5358 if (cleanvar && var)
5360 if (me[0]) ast_member_delete(me[0]);
5361 if (me[1]) ast_member_delete(me[1]);
5362 if (me[2]) ast_member_delete(me[2]);
5366 static bool parser_global_statement(parser_t *parser)
5370 bool is_static = false;
5371 uint32_t qflags = 0;
5372 ast_value *istype = NULL;
5373 char *vstring = NULL;
5375 if (parser->tok == TOKEN_IDENT)
5376 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5378 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5380 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5382 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5384 if (cvq == CV_WRONG)
5386 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5388 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5390 return parse_enum(parser);
5392 else if (parser->tok == TOKEN_KEYWORD)
5394 if (!strcmp(parser_tokval(parser), "typedef")) {
5395 if (!parser_next(parser)) {
5396 parseerror(parser, "expected type definition after 'typedef'");
5399 return parse_typedef(parser);
5401 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5404 else if (parser->tok == '#')
5406 return parse_pragma(parser);
5408 else if (parser->tok == '$')
5410 if (!parser_next(parser)) {
5411 parseerror(parser, "parse error");
5417 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
5423 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5425 return util_crc16(old, str, strlen(str));
5428 static void progdefs_crc_file(const char *str)
5430 /* write to progdefs.h here */
5434 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5436 old = progdefs_crc_sum(old, str);
5437 progdefs_crc_file(str);
5441 static void generate_checksum(parser_t *parser)
5443 uint16_t crc = 0xFFFF;
5447 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5448 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5450 progdefs_crc_file("\tint\tpad;\n");
5451 progdefs_crc_file("\tint\tofs_return[3];\n");
5452 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5453 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5454 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5455 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5456 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5457 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5458 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5459 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5461 for (i = 0; i < parser->crc_globals; ++i) {
5462 if (!ast_istype(parser->globals[i], ast_value))
5464 value = (ast_value*)(parser->globals[i]);
5465 switch (value->expression.vtype) {
5466 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5467 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5468 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5469 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5471 crc = progdefs_crc_both(crc, "\tint\t");
5474 crc = progdefs_crc_both(crc, value->name);
5475 crc = progdefs_crc_both(crc, ";\n");
5477 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5478 for (i = 0; i < parser->crc_fields; ++i) {
5479 if (!ast_istype(parser->fields[i], ast_value))
5481 value = (ast_value*)(parser->fields[i]);
5482 switch (value->expression.next->expression.vtype) {
5483 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5484 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5485 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5486 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5488 crc = progdefs_crc_both(crc, "\tint\t");
5491 crc = progdefs_crc_both(crc, value->name);
5492 crc = progdefs_crc_both(crc, ";\n");
5494 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5499 static parser_t *parser;
5506 parser = (parser_t*)mem_a(sizeof(parser_t));
5510 memset(parser, 0, sizeof(*parser));
5512 for (i = 0; i < operator_count; ++i) {
5513 if (operators[i].id == opid1('=')) {
5514 parser->assign_op = operators+i;
5518 if (!parser->assign_op) {
5519 printf("internal error: initializing parser: failed to find assign operator\n");
5524 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5525 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5526 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5527 vec_push(parser->_blocktypedefs, 0);
5530 vec_push(parser->correct_variables, correct_trie_new());
5531 vec_push(parser->correct_variables_score, NULL);
5533 empty_ctx.file = "<internal>";
5535 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
5536 parser->nil->cvq = CV_CONST;
5537 if (OPTS_FLAG(UNTYPED_NIL))
5538 util_htset(parser->htglobals, "nil", (void*)parser->nil);
5540 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
5541 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
5542 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
5544 if (opts.add_info) {
5545 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
5546 parser->reserved_version->cvq = CV_CONST;
5547 parser->reserved_version->hasvalue = true;
5548 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
5549 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
5551 parser->reserved_version = NULL;
5556 bool parser_compile()
5558 /* initial lexer/parser state */
5559 parser->lex->flags.noops = true;
5561 if (parser_next(parser))
5563 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
5565 if (!parser_global_statement(parser)) {
5566 if (parser->tok == TOKEN_EOF)
5567 parseerror(parser, "unexpected eof");
5568 else if (compile_errors)
5569 parseerror(parser, "there have been errors, bailing out");
5570 lex_close(parser->lex);
5576 parseerror(parser, "parse error");
5577 lex_close(parser->lex);
5582 lex_close(parser->lex);
5585 return !compile_errors;
5588 bool parser_compile_file(const char *filename)
5590 parser->lex = lex_open(filename);
5592 con_err("failed to open file \"%s\"\n", filename);
5595 return parser_compile();
5598 bool parser_compile_string(const char *name, const char *str, size_t len)
5600 parser->lex = lex_open_string(str, len, name);
5602 con_err("failed to create lexer for string \"%s\"\n", name);
5605 return parser_compile();
5608 void parser_cleanup()
5611 for (i = 0; i < vec_size(parser->accessors); ++i) {
5612 ast_delete(parser->accessors[i]->constval.vfunc);
5613 parser->accessors[i]->constval.vfunc = NULL;
5614 ast_delete(parser->accessors[i]);
5616 for (i = 0; i < vec_size(parser->functions); ++i) {
5617 ast_delete(parser->functions[i]);
5619 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5620 ast_delete(parser->imm_vector[i]);
5622 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5623 ast_delete(parser->imm_string[i]);
5625 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5626 ast_delete(parser->imm_float[i]);
5628 for (i = 0; i < vec_size(parser->fields); ++i) {
5629 ast_delete(parser->fields[i]);
5631 for (i = 0; i < vec_size(parser->globals); ++i) {
5632 ast_delete(parser->globals[i]);
5634 vec_free(parser->accessors);
5635 vec_free(parser->functions);
5636 vec_free(parser->imm_vector);
5637 vec_free(parser->imm_string);
5638 vec_free(parser->imm_float);
5639 vec_free(parser->globals);
5640 vec_free(parser->fields);
5642 for (i = 0; i < vec_size(parser->variables); ++i)
5643 util_htdel(parser->variables[i]);
5644 vec_free(parser->variables);
5645 vec_free(parser->_blocklocals);
5646 vec_free(parser->_locals);
5649 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
5650 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
5652 vec_free(parser->correct_variables);
5653 vec_free(parser->correct_variables_score);
5656 for (i = 0; i < vec_size(parser->_typedefs); ++i)
5657 ast_delete(parser->_typedefs[i]);
5658 vec_free(parser->_typedefs);
5659 for (i = 0; i < vec_size(parser->typedefs); ++i)
5660 util_htdel(parser->typedefs[i]);
5661 vec_free(parser->typedefs);
5662 vec_free(parser->_blocktypedefs);
5664 vec_free(parser->_block_ctx);
5666 vec_free(parser->labels);
5667 vec_free(parser->gotos);
5668 vec_free(parser->breaks);
5669 vec_free(parser->continues);
5671 ast_value_delete(parser->nil);
5673 ast_value_delete(parser->const_vec[0]);
5674 ast_value_delete(parser->const_vec[1]);
5675 ast_value_delete(parser->const_vec[2]);
5680 bool parser_finish(const char *output)
5686 if (compile_errors) {
5687 con_out("*** there were compile errors\n");
5691 ir = ir_builder_new("gmqcc_out");
5693 con_out("failed to allocate builder\n");
5697 for (i = 0; i < vec_size(parser->fields); ++i) {
5700 if (!ast_istype(parser->fields[i], ast_value))
5702 field = (ast_value*)parser->fields[i];
5703 hasvalue = field->hasvalue;
5704 field->hasvalue = false;
5705 if (!ast_global_codegen((ast_value*)field, ir, true)) {
5706 con_out("failed to generate field %s\n", field->name);
5707 ir_builder_delete(ir);
5712 ast_expression *subtype;
5713 field->hasvalue = true;
5714 subtype = field->expression.next;
5715 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
5716 if (subtype->expression.vtype == TYPE_FIELD)
5717 ifld->fieldtype = subtype->expression.next->expression.vtype;
5718 else if (subtype->expression.vtype == TYPE_FUNCTION)
5719 ifld->outtype = subtype->expression.next->expression.vtype;
5720 (void)!ir_value_set_field(field->ir_v, ifld);
5723 for (i = 0; i < vec_size(parser->globals); ++i) {
5725 if (!ast_istype(parser->globals[i], ast_value))
5727 asvalue = (ast_value*)(parser->globals[i]);
5728 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
5729 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
5730 "unused global: `%s`", asvalue->name);
5732 if (!ast_global_codegen(asvalue, ir, false)) {
5733 con_out("failed to generate global %s\n", asvalue->name);
5734 ir_builder_delete(ir);
5738 if (parser->reserved_version &&
5739 !ast_global_codegen(parser->reserved_version, ir, false))
5741 con_out("failed to generate reserved::version");
5742 ir_builder_delete(ir);
5745 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5746 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
5747 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
5748 ir_builder_delete(ir);
5752 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5753 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
5754 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
5755 ir_builder_delete(ir);
5759 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5760 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
5761 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
5762 ir_builder_delete(ir);
5766 for (i = 0; i < vec_size(parser->globals); ++i) {
5768 if (!ast_istype(parser->globals[i], ast_value))
5770 asvalue = (ast_value*)(parser->globals[i]);
5771 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
5773 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
5774 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
5775 "uninitialized constant: `%s`",
5777 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
5778 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
5779 "uninitialized global: `%s`",
5782 if (!ast_generate_accessors(asvalue, ir)) {
5783 ir_builder_delete(ir);
5787 for (i = 0; i < vec_size(parser->fields); ++i) {
5789 asvalue = (ast_value*)(parser->fields[i]->expression.next);
5791 if (!ast_istype((ast_expression*)asvalue, ast_value))
5793 if (asvalue->expression.vtype != TYPE_ARRAY)
5795 if (!ast_generate_accessors(asvalue, ir)) {
5796 ir_builder_delete(ir);
5800 for (i = 0; i < vec_size(parser->functions); ++i) {
5801 ast_function *f = parser->functions[i];
5803 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
5804 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
5805 if (!parser_create_array_setter_impl(parser, f->varargs)) {
5806 con_out("failed to generate vararg setter for %s\n", f->name);
5807 ir_builder_delete(ir);
5810 if (!parser_create_array_getter_impl(parser, f->varargs)) {
5811 con_out("failed to generate vararg getter for %s\n", f->name);
5812 ir_builder_delete(ir);
5816 ast_delete(f->varargs);
5820 if (!ast_function_codegen(f, ir)) {
5821 con_out("failed to generate function %s\n", f->name);
5822 ir_builder_delete(ir);
5827 ir_builder_dump(ir, con_out);
5828 for (i = 0; i < vec_size(parser->functions); ++i) {
5829 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
5830 con_out("failed to finalize function %s\n", parser->functions[i]->name);
5831 ir_builder_delete(ir);
5836 if (compile_Werrors) {
5837 con_out("*** there were warnings treated as errors\n");
5838 compile_show_werrors();
5844 ir_builder_dump(ir, con_out);
5846 generate_checksum(parser);
5848 if (!ir_builder_generate(ir, output)) {
5849 con_out("*** failed to generate output file\n");
5850 ir_builder_delete(ir);
5855 ir_builder_delete(ir);