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;
1356 ast_value *funval = NULL;
1362 vec_shrinkby(sy->ops, 1);
1363 fid = sy->ops[vec_size(sy->ops)].off;
1365 /* out[fid] is the function
1366 * everything above is parameters...
1367 * 0 params = nothing
1368 * 1 params = ast_expression
1372 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1373 parseerror(parser, "internal error: function call needs function and parameter list...");
1377 fun = sy->out[fid].out;
1379 if (fun == intrinsic_debug_typestring) {
1381 if (fid+2 != vec_size(sy->out) ||
1382 vec_last(sy->out).block)
1384 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1387 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1388 ast_unref(vec_last(sy->out).out);
1389 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1390 (ast_expression*)parser_const_string(parser, ty, false));
1391 vec_shrinkby(sy->out, 1);
1395 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1397 parseerror(parser, "internal error: failed to create ast_call node");
1401 if (fid+1 == vec_size(sy->out)) {
1404 } else if (fid+2 == vec_size(sy->out)) {
1406 vec_shrinkby(sy->out, 1);
1407 params = sy->out[vec_size(sy->out)].block;
1411 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1413 paramcount = vec_size(params->exprs);
1414 call->params = params->exprs;
1415 params->exprs = NULL;
1418 if (parser->max_param_count < paramcount)
1419 parser->max_param_count = paramcount;
1420 (void)!ast_call_check_types(call);
1422 parseerror(parser, "invalid function call");
1426 if (ast_istype(fun, ast_value)) {
1427 funval = (ast_value*)fun;
1428 if ((fun->expression.flags & AST_FLAG_VARIADIC) &&
1429 !(funval->cvq == CV_CONST && funval->hasvalue && funval->constval.vfunc->builtin))
1432 if (paramcount < vec_size(fun->expression.params))
1435 va_count = paramcount - vec_size(fun->expression.params);
1436 call->va_count = (ast_expression*)parser_const_float(parser, (double)va_count);
1440 /* overwrite fid, the function, with a call */
1441 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1443 if (fun->expression.vtype != TYPE_FUNCTION) {
1444 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1448 if (!fun->expression.next) {
1449 parseerror(parser, "could not determine function return type");
1452 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1454 if (fun->expression.flags & AST_FLAG_DEPRECATED) {
1456 return !parsewarning(parser, WARN_DEPRECATED,
1457 "call to function (which is marked deprecated)\n",
1458 "-> it has been declared here: %s:%i",
1459 ast_ctx(fun).file, ast_ctx(fun).line);
1462 return !parsewarning(parser, WARN_DEPRECATED,
1463 "call to `%s` (which is marked deprecated)\n"
1464 "-> `%s` declared here: %s:%i",
1465 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1467 return !parsewarning(parser, WARN_DEPRECATED,
1468 "call to `%s` (deprecated: %s)\n"
1469 "-> `%s` declared here: %s:%i",
1470 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1474 if (vec_size(fun->expression.params) != paramcount &&
1475 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1476 vec_size(fun->expression.params) < paramcount))
1478 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1480 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1481 "too %s parameters for call to %s: expected %i, got %i\n"
1482 " -> `%s` has been declared here: %s:%i",
1483 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1484 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1486 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1487 "too %s parameters for function call: expected %i, got %i\n"
1488 " -> it has been declared here: %s:%i",
1489 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1490 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1497 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1499 if (!vec_size(sy->ops)) {
1500 parseerror(parser, "unmatched closing paren");
1503 /* this would for bit a + (x) because there are no operators inside (x)
1504 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1505 parseerror(parser, "empty parenthesis expression");
1509 while (vec_size(sy->ops)) {
1510 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1511 if (!parser_close_call(parser, sy))
1515 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1516 vec_shrinkby(sy->ops, 1);
1517 return !functions_only;
1519 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1522 /* pop off the parenthesis */
1523 vec_shrinkby(sy->ops, 1);
1524 /* then apply the index operator */
1525 if (!parser_sy_apply_operator(parser, sy))
1529 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1532 if (vec_last(parser->pot) != POT_TERNARY1) {
1533 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1536 vec_last(parser->pot) = POT_TERNARY2;
1537 /* pop off the parenthesis */
1538 vec_shrinkby(sy->ops, 1);
1541 if (!parser_sy_apply_operator(parser, sy))
1547 static void parser_reclassify_token(parser_t *parser)
1550 for (i = 0; i < operator_count; ++i) {
1551 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1552 parser->tok = TOKEN_OPERATOR;
1558 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1560 ast_expression *expr = NULL;
1562 bool wantop = false;
1563 /* only warn once about an assignment in a truth value because the current code
1564 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1566 bool warn_truthvalue = true;
1568 /* count the parens because an if starts with one, so the
1569 * end of a condition is an unmatched closing paren
1577 parser->lex->flags.noops = false;
1579 parser_reclassify_token(parser);
1583 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1584 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1586 /* a translatable string */
1590 parseerror(parser, "expected operator or end of statement, got constant");
1594 parser->lex->flags.noops = true;
1595 if (!parser_next(parser) || parser->tok != '(') {
1596 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1599 parser->lex->flags.noops = false;
1600 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1601 parseerror(parser, "expected a constant string in translatable-string extension");
1604 val = parser_const_string(parser, parser_tokval(parser), true);
1608 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1609 DEBUGSHUNTDO(con_out("push string\n"));
1611 if (!parser_next(parser) || parser->tok != ')') {
1612 parseerror(parser, "expected closing paren after translatable string");
1616 else if (parser->tok == TOKEN_IDENT)
1618 const char *ctoken = parser_tokval(parser);
1619 ast_expression *prev = vec_size(sy.out) ? vec_last(sy.out).out : NULL;
1620 ast_expression *var;
1622 parseerror(parser, "expected operator or end of statement");
1626 /* a_vector.{x,y,z} */
1627 if (!vec_size(sy.ops) ||
1628 !vec_last(sy.ops).etype ||
1629 operators[vec_last(sy.ops).etype-1].id != opid1('.') ||
1630 (prev >= intrinsic_debug_typestring &&
1631 prev <= intrinsic_debug_typestring))
1633 /* When adding more intrinsics, fix the above condition */
1636 if (prev && prev->expression.vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1638 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1640 var = parser_find_var(parser, parser_tokval(parser));
1642 var = parser_find_field(parser, parser_tokval(parser));
1644 if (!var && with_labels) {
1645 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1647 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1648 var = (ast_expression*)lbl;
1649 vec_push(parser->labels, lbl);
1654 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1655 var = (ast_expression*)intrinsic_debug_typestring;
1660 char *correct = NULL;
1663 * sometimes people use preprocessing predefs without enabling them
1664 * i've done this thousands of times already myself. Lets check for
1665 * it in the predef table. And diagnose it better :)
1667 if (!OPTS_FLAG(FTEPP_PREDEFS)) {
1668 for (i = 0; i < sizeof(ftepp_predefs)/sizeof(*ftepp_predefs); i++) {
1669 if (!strcmp(ftepp_predefs[i].name, parser_tokval(parser))) {
1670 parseerror(parser, "unexpected ident: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1677 * TODO: determine the best score for the identifier: be it
1678 * a variable, a field.
1680 * We should also consider adding correction tables for
1681 * other things as well.
1683 if (OPTS_FLAG(ENHANCED_DIAGNOSTICS)) {
1685 correct_init(&corr);
1687 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1688 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1689 if (strcmp(correct, parser_tokval(parser))) {
1691 } else if (correct) {
1696 correct_free(&corr);
1699 parseerror(parser, "unexpected ident: %s (did you mean %s?)", parser_tokval(parser), correct);
1704 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1710 if (ast_istype(var, ast_value)) {
1711 ((ast_value*)var)->uses++;
1713 else if (ast_istype(var, ast_member)) {
1714 ast_member *mem = (ast_member*)var;
1715 if (ast_istype(mem->owner, ast_value))
1716 ((ast_value*)(mem->owner))->uses++;
1719 vec_push(sy.out, syexp(parser_ctx(parser), var));
1720 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1722 else if (parser->tok == TOKEN_FLOATCONST) {
1725 parseerror(parser, "expected operator or end of statement, got constant");
1729 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1732 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1733 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1735 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1738 parseerror(parser, "expected operator or end of statement, got constant");
1742 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1745 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1746 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1748 else if (parser->tok == TOKEN_STRINGCONST) {
1751 parseerror(parser, "expected operator or end of statement, got constant");
1755 val = parser_const_string(parser, parser_tokval(parser), false);
1758 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1759 DEBUGSHUNTDO(con_out("push string\n"));
1761 else if (parser->tok == TOKEN_VECTORCONST) {
1764 parseerror(parser, "expected operator or end of statement, got constant");
1768 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1771 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1772 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1773 parser_token(parser)->constval.v.x,
1774 parser_token(parser)->constval.v.y,
1775 parser_token(parser)->constval.v.z));
1777 else if (parser->tok == '(') {
1778 parseerror(parser, "internal error: '(' should be classified as operator");
1781 else if (parser->tok == '[') {
1782 parseerror(parser, "internal error: '[' should be classified as operator");
1785 else if (parser->tok == ')') {
1787 DEBUGSHUNTDO(con_out("do[op] )\n"));
1791 /* we do expect an operator next */
1792 /* closing an opening paren */
1793 if (!parser_close_paren(parser, &sy, false))
1795 if (vec_last(parser->pot) != POT_PAREN) {
1796 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1799 vec_pop(parser->pot);
1801 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1805 /* allowed for function calls */
1806 if (!parser_close_paren(parser, &sy, true))
1808 if (vec_last(parser->pot) != POT_PAREN) {
1809 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1812 vec_pop(parser->pot);
1816 else if (parser->tok == ']') {
1818 parseerror(parser, "operand expected");
1822 if (!parser_close_paren(parser, &sy, false))
1824 if (vec_last(parser->pot) != POT_PAREN) {
1825 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1828 vec_pop(parser->pot);
1831 else if (parser->tok == TOKEN_TYPENAME) {
1832 parseerror(parser, "unexpected typename");
1835 else if (parser->tok != TOKEN_OPERATOR) {
1837 parseerror(parser, "expected operator or end of statement");
1844 /* classify the operator */
1845 const oper_info *op;
1846 const oper_info *olast = NULL;
1848 for (o = 0; o < operator_count; ++o) {
1849 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1850 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1851 !strcmp(parser_tokval(parser), operators[o].op))
1856 if (o == operator_count) {
1857 /* no operator found... must be the end of the statement */
1860 /* found an operator */
1863 /* when declaring variables, a comma starts a new variable */
1864 if (op->id == opid1(',') && !parens && stopatcomma) {
1865 /* fixup the token */
1870 /* a colon without a pervious question mark cannot be a ternary */
1871 if (!ternaries && op->id == opid2(':','?')) {
1876 if (op->id == opid1(',')) {
1877 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1878 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1882 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1883 olast = &operators[vec_last(sy.ops).etype-1];
1885 #define IsAssignOp(x) (\
1886 (x) == opid1('=') || \
1887 (x) == opid2('+','=') || \
1888 (x) == opid2('-','=') || \
1889 (x) == opid2('*','=') || \
1890 (x) == opid2('/','=') || \
1891 (x) == opid2('%','=') || \
1892 (x) == opid2('&','=') || \
1893 (x) == opid2('|','=') || \
1894 (x) == opid3('&','~','=') \
1896 if (warn_truthvalue) {
1897 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1898 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1899 (truthvalue && !vec_size(parser->pot) && IsAssignOp(op->id))
1902 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1903 warn_truthvalue = false;
1908 (op->prec < olast->prec) ||
1909 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1911 if (!parser_sy_apply_operator(parser, &sy))
1913 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1914 olast = &operators[vec_last(sy.ops).etype-1];
1919 if (op->id == opid1('(')) {
1921 size_t sycount = vec_size(sy.out);
1922 DEBUGSHUNTDO(con_out("push [op] (\n"));
1923 ++parens; vec_push(parser->pot, POT_PAREN);
1924 /* we expected an operator, this is the function-call operator */
1925 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1927 ++parens; vec_push(parser->pot, POT_PAREN);
1928 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1929 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1932 } else if (op->id == opid1('[')) {
1934 parseerror(parser, "unexpected array subscript");
1937 ++parens; vec_push(parser->pot, POT_PAREN);
1938 /* push both the operator and the paren, this makes life easier */
1939 vec_push(sy.ops, syop(parser_ctx(parser), op));
1940 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1942 } else if (op->id == opid2('?',':')) {
1943 vec_push(sy.ops, syop(parser_ctx(parser), op));
1944 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1947 vec_push(parser->pot, POT_TERNARY1);
1948 } else if (op->id == opid2(':','?')) {
1949 if (!vec_size(parser->pot)) {
1950 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1953 if (vec_last(parser->pot) != POT_TERNARY1) {
1954 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1957 if (!parser_close_paren(parser, &sy, false))
1959 vec_push(sy.ops, syop(parser_ctx(parser), op));
1963 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1964 vec_push(sy.ops, syop(parser_ctx(parser), op));
1965 wantop = !!(op->flags & OP_SUFFIX);
1968 if (!parser_next(parser)) {
1971 if (parser->tok == ';' ||
1972 (!parens && (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
1978 while (vec_size(sy.ops)) {
1979 if (!parser_sy_apply_operator(parser, &sy))
1983 parser->lex->flags.noops = true;
1984 if (!vec_size(sy.out)) {
1985 parseerror(parser, "empty expression");
1988 expr = sy.out[0].out;
1991 DEBUGSHUNTDO(con_out("shunt done\n"));
1992 if (vec_size(parser->pot)) {
1993 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1996 vec_free(parser->pot);
2000 parser->lex->flags.noops = true;
2006 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
2008 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
2011 if (parser->tok != ';') {
2012 parseerror(parser, "semicolon expected after expression");
2016 if (!parser_next(parser)) {
2023 static void parser_enterblock(parser_t *parser)
2025 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2026 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2027 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2028 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2029 vec_push(parser->_block_ctx, parser_ctx(parser));
2032 vec_push(parser->correct_variables, correct_trie_new());
2033 vec_push(parser->correct_variables_score, NULL);
2036 static bool parser_leaveblock(parser_t *parser)
2039 size_t locals, typedefs;
2041 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2042 parseerror(parser, "internal error: parser_leaveblock with no block");
2046 util_htdel(vec_last(parser->variables));
2047 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2049 vec_pop(parser->variables);
2050 vec_pop(parser->correct_variables);
2051 vec_pop(parser->correct_variables_score);
2052 if (!vec_size(parser->_blocklocals)) {
2053 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2057 locals = vec_last(parser->_blocklocals);
2058 vec_pop(parser->_blocklocals);
2059 while (vec_size(parser->_locals) != locals) {
2060 ast_expression *e = vec_last(parser->_locals);
2061 ast_value *v = (ast_value*)e;
2062 vec_pop(parser->_locals);
2063 if (ast_istype(e, ast_value) && !v->uses) {
2064 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2069 typedefs = vec_last(parser->_blocktypedefs);
2070 while (vec_size(parser->_typedefs) != typedefs) {
2071 ast_delete(vec_last(parser->_typedefs));
2072 vec_pop(parser->_typedefs);
2074 util_htdel(vec_last(parser->typedefs));
2075 vec_pop(parser->typedefs);
2077 vec_pop(parser->_block_ctx);
2082 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2084 vec_push(parser->_locals, e);
2085 util_htset(vec_last(parser->variables), name, (void*)e);
2089 vec_last(parser->correct_variables),
2090 &vec_last(parser->correct_variables_score),
2095 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2097 vec_push(parser->globals, e);
2098 util_htset(parser->htglobals, name, e);
2102 parser->correct_variables[0],
2103 &parser->correct_variables_score[0],
2108 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2112 ast_expression *prev;
2114 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
2117 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2120 parseerror(parser, "internal error: failed to process condition");
2125 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
2127 /* vector types need to be cast to true booleans */
2128 ast_binary *bin = (ast_binary*)cond;
2129 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2131 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2133 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2136 parseerror(parser, "internal error: failed to process condition");
2143 unary = (ast_unary*)cond;
2144 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2146 cond = unary->operand;
2147 unary->operand = NULL;
2150 unary = (ast_unary*)cond;
2154 parseerror(parser, "internal error: failed to process condition");
2156 if (ifnot) *_ifnot = !*_ifnot;
2160 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2163 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2166 lex_ctx ctx = parser_ctx(parser);
2168 (void)block; /* not touching */
2170 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2171 if (!parser_next(parser)) {
2172 parseerror(parser, "expected condition or 'not'");
2175 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2177 if (!parser_next(parser)) {
2178 parseerror(parser, "expected condition in parenthesis");
2182 if (parser->tok != '(') {
2183 parseerror(parser, "expected 'if' condition in parenthesis");
2186 /* parse into the expression */
2187 if (!parser_next(parser)) {
2188 parseerror(parser, "expected 'if' condition after opening paren");
2191 /* parse the condition */
2192 cond = parse_expression_leave(parser, false, true, false);
2196 if (parser->tok != ')') {
2197 parseerror(parser, "expected closing paren after 'if' condition");
2201 /* parse into the 'then' branch */
2202 if (!parser_next(parser)) {
2203 parseerror(parser, "expected statement for on-true branch of 'if'");
2207 if (!parse_statement_or_block(parser, &ontrue)) {
2212 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2213 /* check for an else */
2214 if (!strcmp(parser_tokval(parser), "else")) {
2215 /* parse into the 'else' branch */
2216 if (!parser_next(parser)) {
2217 parseerror(parser, "expected on-false branch after 'else'");
2222 if (!parse_statement_or_block(parser, &onfalse)) {
2229 cond = process_condition(parser, cond, &ifnot);
2231 if (ontrue) ast_delete(ontrue);
2232 if (onfalse) ast_delete(onfalse);
2237 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2239 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2240 *out = (ast_expression*)ifthen;
2244 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2245 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2250 /* skip the 'while' and get the body */
2251 if (!parser_next(parser)) {
2252 if (OPTS_FLAG(LOOP_LABELS))
2253 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2255 parseerror(parser, "expected 'while' condition in parenthesis");
2259 if (parser->tok == ':') {
2260 if (!OPTS_FLAG(LOOP_LABELS))
2261 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2262 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2263 parseerror(parser, "expected loop label");
2266 label = util_strdup(parser_tokval(parser));
2267 if (!parser_next(parser)) {
2269 parseerror(parser, "expected 'while' condition in parenthesis");
2274 if (parser->tok != '(') {
2275 parseerror(parser, "expected 'while' condition in parenthesis");
2279 vec_push(parser->breaks, label);
2280 vec_push(parser->continues, label);
2282 rv = parse_while_go(parser, block, out);
2285 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2286 parseerror(parser, "internal error: label stack corrupted");
2292 vec_pop(parser->breaks);
2293 vec_pop(parser->continues);
2298 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2301 ast_expression *cond, *ontrue;
2305 lex_ctx ctx = parser_ctx(parser);
2307 (void)block; /* not touching */
2309 /* parse into the expression */
2310 if (!parser_next(parser)) {
2311 parseerror(parser, "expected 'while' condition after opening paren");
2314 /* parse the condition */
2315 cond = parse_expression_leave(parser, false, true, false);
2319 if (parser->tok != ')') {
2320 parseerror(parser, "expected closing paren after 'while' condition");
2324 /* parse into the 'then' branch */
2325 if (!parser_next(parser)) {
2326 parseerror(parser, "expected while-loop body");
2330 if (!parse_statement_or_block(parser, &ontrue)) {
2335 cond = process_condition(parser, cond, &ifnot);
2340 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2341 *out = (ast_expression*)aloop;
2345 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2346 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2351 /* skip the 'do' and get the body */
2352 if (!parser_next(parser)) {
2353 if (OPTS_FLAG(LOOP_LABELS))
2354 parseerror(parser, "expected loop label or body");
2356 parseerror(parser, "expected loop body");
2360 if (parser->tok == ':') {
2361 if (!OPTS_FLAG(LOOP_LABELS))
2362 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2363 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2364 parseerror(parser, "expected loop label");
2367 label = util_strdup(parser_tokval(parser));
2368 if (!parser_next(parser)) {
2370 parseerror(parser, "expected loop body");
2375 vec_push(parser->breaks, label);
2376 vec_push(parser->continues, label);
2378 rv = parse_dowhile_go(parser, block, out);
2381 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2382 parseerror(parser, "internal error: label stack corrupted");
2388 vec_pop(parser->breaks);
2389 vec_pop(parser->continues);
2394 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2397 ast_expression *cond, *ontrue;
2401 lex_ctx ctx = parser_ctx(parser);
2403 (void)block; /* not touching */
2405 if (!parse_statement_or_block(parser, &ontrue))
2408 /* expect the "while" */
2409 if (parser->tok != TOKEN_KEYWORD ||
2410 strcmp(parser_tokval(parser), "while"))
2412 parseerror(parser, "expected 'while' and condition");
2417 /* skip the 'while' and check for opening paren */
2418 if (!parser_next(parser) || parser->tok != '(') {
2419 parseerror(parser, "expected 'while' condition in parenthesis");
2423 /* parse into the expression */
2424 if (!parser_next(parser)) {
2425 parseerror(parser, "expected 'while' condition after opening paren");
2429 /* parse the condition */
2430 cond = parse_expression_leave(parser, false, true, false);
2434 if (parser->tok != ')') {
2435 parseerror(parser, "expected closing paren after 'while' condition");
2441 if (!parser_next(parser) || parser->tok != ';') {
2442 parseerror(parser, "expected semicolon after condition");
2448 if (!parser_next(parser)) {
2449 parseerror(parser, "parse error");
2455 cond = process_condition(parser, cond, &ifnot);
2460 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2461 *out = (ast_expression*)aloop;
2465 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2466 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2471 /* skip the 'for' and check for opening paren */
2472 if (!parser_next(parser)) {
2473 if (OPTS_FLAG(LOOP_LABELS))
2474 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2476 parseerror(parser, "expected 'for' expressions in parenthesis");
2480 if (parser->tok == ':') {
2481 if (!OPTS_FLAG(LOOP_LABELS))
2482 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2483 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2484 parseerror(parser, "expected loop label");
2487 label = util_strdup(parser_tokval(parser));
2488 if (!parser_next(parser)) {
2490 parseerror(parser, "expected 'for' expressions in parenthesis");
2495 if (parser->tok != '(') {
2496 parseerror(parser, "expected 'for' expressions in parenthesis");
2500 vec_push(parser->breaks, label);
2501 vec_push(parser->continues, label);
2503 rv = parse_for_go(parser, block, out);
2506 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2507 parseerror(parser, "internal error: label stack corrupted");
2513 vec_pop(parser->breaks);
2514 vec_pop(parser->continues);
2518 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2521 ast_expression *initexpr, *cond, *increment, *ontrue;
2527 lex_ctx ctx = parser_ctx(parser);
2529 parser_enterblock(parser);
2536 /* parse into the expression */
2537 if (!parser_next(parser)) {
2538 parseerror(parser, "expected 'for' initializer after opening paren");
2543 if (parser->tok == TOKEN_IDENT)
2544 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2546 if (typevar || parser->tok == TOKEN_TYPENAME) {
2548 if (opts.standard != COMPILER_GMQCC) {
2549 if (parsewarning(parser, WARN_EXTENSIONS,
2550 "current standard does not allow variable declarations in for-loop initializers"))
2554 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2557 else if (parser->tok != ';')
2559 initexpr = parse_expression_leave(parser, false, false, false);
2564 /* move on to condition */
2565 if (parser->tok != ';') {
2566 parseerror(parser, "expected semicolon after for-loop initializer");
2569 if (!parser_next(parser)) {
2570 parseerror(parser, "expected for-loop condition");
2574 /* parse the condition */
2575 if (parser->tok != ';') {
2576 cond = parse_expression_leave(parser, false, true, false);
2581 /* move on to incrementor */
2582 if (parser->tok != ';') {
2583 parseerror(parser, "expected semicolon after for-loop initializer");
2586 if (!parser_next(parser)) {
2587 parseerror(parser, "expected for-loop condition");
2591 /* parse the incrementor */
2592 if (parser->tok != ')') {
2593 increment = parse_expression_leave(parser, false, false, false);
2596 if (!ast_side_effects(increment)) {
2597 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2603 if (parser->tok != ')') {
2604 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2607 /* parse into the 'then' branch */
2608 if (!parser_next(parser)) {
2609 parseerror(parser, "expected for-loop body");
2612 if (!parse_statement_or_block(parser, &ontrue))
2616 cond = process_condition(parser, cond, &ifnot);
2620 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2621 *out = (ast_expression*)aloop;
2623 if (!parser_leaveblock(parser))
2627 if (initexpr) ast_delete(initexpr);
2628 if (cond) ast_delete(cond);
2629 if (increment) ast_delete(increment);
2630 (void)!parser_leaveblock(parser);
2634 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2636 ast_expression *exp = NULL;
2637 ast_return *ret = NULL;
2638 ast_value *expected = parser->function->vtype;
2640 lex_ctx ctx = parser_ctx(parser);
2642 (void)block; /* not touching */
2644 if (!parser_next(parser)) {
2645 parseerror(parser, "expected return expression");
2649 if (parser->tok != ';') {
2650 exp = parse_expression(parser, false, false);
2654 if (exp->expression.vtype != TYPE_NIL &&
2655 exp->expression.vtype != expected->expression.next->expression.vtype)
2657 parseerror(parser, "return with invalid expression");
2660 ret = ast_return_new(ctx, exp);
2666 if (!parser_next(parser))
2667 parseerror(parser, "parse error");
2668 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2669 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2671 ret = ast_return_new(ctx, NULL);
2673 *out = (ast_expression*)ret;
2677 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2680 unsigned int levels = 0;
2681 lex_ctx ctx = parser_ctx(parser);
2682 const char **loops = (is_continue ? parser->continues : parser->breaks);
2684 (void)block; /* not touching */
2685 if (!parser_next(parser)) {
2686 parseerror(parser, "expected semicolon or loop label");
2690 if (!vec_size(loops)) {
2692 parseerror(parser, "`continue` can only be used inside loops");
2694 parseerror(parser, "`break` can only be used inside loops or switches");
2697 if (parser->tok == TOKEN_IDENT) {
2698 if (!OPTS_FLAG(LOOP_LABELS))
2699 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2700 i = vec_size(loops);
2702 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2705 parseerror(parser, "no such loop to %s: `%s`",
2706 (is_continue ? "continue" : "break out of"),
2707 parser_tokval(parser));
2712 if (!parser_next(parser)) {
2713 parseerror(parser, "expected semicolon");
2718 if (parser->tok != ';') {
2719 parseerror(parser, "expected semicolon");
2723 if (!parser_next(parser))
2724 parseerror(parser, "parse error");
2726 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2730 /* returns true when it was a variable qualifier, false otherwise!
2731 * on error, cvq is set to CV_WRONG
2733 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2735 bool had_const = false;
2736 bool had_var = false;
2737 bool had_noref = false;
2738 bool had_attrib = false;
2739 bool had_static = false;
2744 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2746 /* parse an attribute */
2747 if (!parser_next(parser)) {
2748 parseerror(parser, "expected attribute after `[[`");
2752 if (!strcmp(parser_tokval(parser), "noreturn")) {
2753 flags |= AST_FLAG_NORETURN;
2754 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2755 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2760 else if (!strcmp(parser_tokval(parser), "noref")) {
2762 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2763 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2768 else if (!strcmp(parser_tokval(parser), "inline")) {
2769 flags |= AST_FLAG_INLINE;
2770 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2771 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2778 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2779 flags |= AST_FLAG_DEPRECATED;
2782 if (!parser_next(parser)) {
2783 parseerror(parser, "parse error in attribute");
2787 if (parser->tok == '(') {
2788 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2789 parseerror(parser, "`deprecated` attribute missing parameter");
2793 *message = util_strdup(parser_tokval(parser));
2795 if (!parser_next(parser)) {
2796 parseerror(parser, "parse error in attribute");
2800 if(parser->tok != ')') {
2801 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2805 if (!parser_next(parser)) {
2806 parseerror(parser, "parse error in attribute");
2811 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2812 parseerror(parser, "`deprecated` attribute expected `]]`");
2815 if (*message) mem_d(*message);
2823 /* Skip tokens until we hit a ]] */
2824 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2825 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2826 if (!parser_next(parser)) {
2827 parseerror(parser, "error inside attribute");
2834 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2836 else if (!strcmp(parser_tokval(parser), "const"))
2838 else if (!strcmp(parser_tokval(parser), "var"))
2840 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2842 else if (!strcmp(parser_tokval(parser), "noref"))
2844 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2849 if (!parser_next(parser))
2859 *is_static = had_static;
2863 parseerror(parser, "parse error after variable qualifier");
2868 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2869 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2874 /* skip the 'while' and get the body */
2875 if (!parser_next(parser)) {
2876 if (OPTS_FLAG(LOOP_LABELS))
2877 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2879 parseerror(parser, "expected 'switch' operand in parenthesis");
2883 if (parser->tok == ':') {
2884 if (!OPTS_FLAG(LOOP_LABELS))
2885 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2886 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2887 parseerror(parser, "expected loop label");
2890 label = util_strdup(parser_tokval(parser));
2891 if (!parser_next(parser)) {
2893 parseerror(parser, "expected 'switch' operand in parenthesis");
2898 if (parser->tok != '(') {
2899 parseerror(parser, "expected 'switch' operand in parenthesis");
2903 vec_push(parser->breaks, label);
2905 rv = parse_switch_go(parser, block, out);
2908 if (vec_last(parser->breaks) != label) {
2909 parseerror(parser, "internal error: label stack corrupted");
2915 vec_pop(parser->breaks);
2920 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
2922 ast_expression *operand;
2925 ast_switch *switchnode;
2926 ast_switch_case swcase;
2929 bool noref, is_static;
2930 uint32_t qflags = 0;
2932 lex_ctx ctx = parser_ctx(parser);
2934 (void)block; /* not touching */
2937 /* parse into the expression */
2938 if (!parser_next(parser)) {
2939 parseerror(parser, "expected switch operand");
2942 /* parse the operand */
2943 operand = parse_expression_leave(parser, false, false, false);
2947 switchnode = ast_switch_new(ctx, operand);
2950 if (parser->tok != ')') {
2951 ast_delete(switchnode);
2952 parseerror(parser, "expected closing paren after 'switch' operand");
2956 /* parse over the opening paren */
2957 if (!parser_next(parser) || parser->tok != '{') {
2958 ast_delete(switchnode);
2959 parseerror(parser, "expected list of cases");
2963 if (!parser_next(parser)) {
2964 ast_delete(switchnode);
2965 parseerror(parser, "expected 'case' or 'default'");
2969 /* new block; allow some variables to be declared here */
2970 parser_enterblock(parser);
2973 if (parser->tok == TOKEN_IDENT)
2974 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2975 if (typevar || parser->tok == TOKEN_TYPENAME) {
2976 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
2977 ast_delete(switchnode);
2982 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
2984 if (cvq == CV_WRONG) {
2985 ast_delete(switchnode);
2988 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
2989 ast_delete(switchnode);
2998 while (parser->tok != '}') {
2999 ast_block *caseblock;
3001 if (!strcmp(parser_tokval(parser), "case")) {
3002 if (!parser_next(parser)) {
3003 ast_delete(switchnode);
3004 parseerror(parser, "expected expression for case");
3007 swcase.value = parse_expression_leave(parser, false, false, false);
3008 if (!swcase.value) {
3009 ast_delete(switchnode);
3010 parseerror(parser, "expected expression for case");
3013 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3014 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3015 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3021 else if (!strcmp(parser_tokval(parser), "default")) {
3022 swcase.value = NULL;
3023 if (!parser_next(parser)) {
3024 ast_delete(switchnode);
3025 parseerror(parser, "expected colon");
3030 ast_delete(switchnode);
3031 parseerror(parser, "expected 'case' or 'default'");
3035 /* Now the colon and body */
3036 if (parser->tok != ':') {
3037 if (swcase.value) ast_unref(swcase.value);
3038 ast_delete(switchnode);
3039 parseerror(parser, "expected colon");
3043 if (!parser_next(parser)) {
3044 if (swcase.value) ast_unref(swcase.value);
3045 ast_delete(switchnode);
3046 parseerror(parser, "expected statements or case");
3049 caseblock = ast_block_new(parser_ctx(parser));
3051 if (swcase.value) ast_unref(swcase.value);
3052 ast_delete(switchnode);
3055 swcase.code = (ast_expression*)caseblock;
3056 vec_push(switchnode->cases, swcase);
3058 ast_expression *expr;
3059 if (parser->tok == '}')
3061 if (parser->tok == TOKEN_KEYWORD) {
3062 if (!strcmp(parser_tokval(parser), "case") ||
3063 !strcmp(parser_tokval(parser), "default"))
3068 if (!parse_statement(parser, caseblock, &expr, true)) {
3069 ast_delete(switchnode);
3074 if (!ast_block_add_expr(caseblock, expr)) {
3075 ast_delete(switchnode);
3081 parser_leaveblock(parser);
3084 if (parser->tok != '}') {
3085 ast_delete(switchnode);
3086 parseerror(parser, "expected closing paren of case list");
3089 if (!parser_next(parser)) {
3090 ast_delete(switchnode);
3091 parseerror(parser, "parse error after switch");
3094 *out = (ast_expression*)switchnode;
3098 /* parse computed goto sides */
3099 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3100 ast_expression *on_true;
3101 ast_expression *on_false;
3102 ast_expression *cond;
3107 if (ast_istype(*side, ast_ternary)) {
3108 ast_ternary *tern = (ast_ternary*)*side;
3109 on_true = parse_goto_computed(parser, &tern->on_true);
3110 on_false = parse_goto_computed(parser, &tern->on_false);
3112 if (!on_true || !on_false) {
3113 parseerror(parser, "expected label or expression in ternary");
3114 if (on_true) ast_unref(on_true);
3115 if (on_false) ast_unref(on_false);
3123 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3124 } else if (ast_istype(*side, ast_label)) {
3125 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3126 ast_goto_set_label(gt, ((ast_label*)*side));
3128 return (ast_expression*)gt;
3133 static bool parse_goto(parser_t *parser, ast_expression **out)
3135 ast_goto *gt = NULL;
3136 ast_expression *lbl;
3138 if (!parser_next(parser))
3141 if (parser->tok != TOKEN_IDENT) {
3142 ast_expression *expression;
3144 /* could be an expression i.e computed goto :-) */
3145 if (parser->tok != '(') {
3146 parseerror(parser, "expected label name after `goto`");
3150 /* failed to parse expression for goto */
3151 if (!(expression = parse_expression(parser, false, true)) ||
3152 !(*out = parse_goto_computed(parser, &expression))) {
3153 parseerror(parser, "invalid goto expression");
3154 ast_unref(expression);
3161 /* not computed goto */
3162 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3163 lbl = parser_find_label(parser, gt->name);
3165 if (!ast_istype(lbl, ast_label)) {
3166 parseerror(parser, "internal error: label is not an ast_label");
3170 ast_goto_set_label(gt, (ast_label*)lbl);
3173 vec_push(parser->gotos, gt);
3175 if (!parser_next(parser) || parser->tok != ';') {
3176 parseerror(parser, "semicolon expected after goto label");
3179 if (!parser_next(parser)) {
3180 parseerror(parser, "parse error after goto");
3184 *out = (ast_expression*)gt;
3188 static bool parse_skipwhite(parser_t *parser)
3191 if (!parser_next(parser))
3193 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3194 return parser->tok < TOKEN_ERROR;
3197 static bool parse_eol(parser_t *parser)
3199 if (!parse_skipwhite(parser))
3201 return parser->tok == TOKEN_EOL;
3204 static bool parse_pragma_do(parser_t *parser)
3206 if (!parser_next(parser) ||
3207 parser->tok != TOKEN_IDENT ||
3208 strcmp(parser_tokval(parser), "pragma"))
3210 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3213 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3214 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3218 if (!strcmp(parser_tokval(parser), "noref")) {
3219 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3220 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3223 parser->noref = !!parser_token(parser)->constval.i;
3224 if (!parse_eol(parser)) {
3225 parseerror(parser, "parse error after `noref` pragma");
3231 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3238 static bool parse_pragma(parser_t *parser)
3241 parser->lex->flags.preprocessing = true;
3242 parser->lex->flags.mergelines = true;
3243 rv = parse_pragma_do(parser);
3244 if (parser->tok != TOKEN_EOL) {
3245 parseerror(parser, "junk after pragma");
3248 parser->lex->flags.preprocessing = false;
3249 parser->lex->flags.mergelines = false;
3250 if (!parser_next(parser)) {
3251 parseerror(parser, "parse error after pragma");
3257 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3259 bool noref, is_static;
3261 uint32_t qflags = 0;
3262 ast_value *typevar = NULL;
3263 char *vstring = NULL;
3267 if (parser->tok == TOKEN_IDENT)
3268 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3270 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3272 /* local variable */
3274 parseerror(parser, "cannot declare a variable from here");
3277 if (opts.standard == COMPILER_QCC) {
3278 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3281 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3285 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3287 if (cvq == CV_WRONG)
3289 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3291 else if (parser->tok == TOKEN_KEYWORD)
3293 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3298 if (!parser_next(parser)) {
3299 parseerror(parser, "parse error after __builtin_debug_printtype");
3303 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3305 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3306 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3307 if (!parser_next(parser)) {
3308 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3314 if (!parse_statement(parser, block, out, allow_cases))
3317 con_out("__builtin_debug_printtype: got no output node\n");
3320 ast_type_to_string(*out, ty, sizeof(ty));
3321 con_out("__builtin_debug_printtype: `%s`\n", ty);
3326 else if (!strcmp(parser_tokval(parser), "return"))
3328 return parse_return(parser, block, out);
3330 else if (!strcmp(parser_tokval(parser), "if"))
3332 return parse_if(parser, block, out);
3334 else if (!strcmp(parser_tokval(parser), "while"))
3336 return parse_while(parser, block, out);
3338 else if (!strcmp(parser_tokval(parser), "do"))
3340 return parse_dowhile(parser, block, out);
3342 else if (!strcmp(parser_tokval(parser), "for"))
3344 if (opts.standard == COMPILER_QCC) {
3345 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3348 return parse_for(parser, block, out);
3350 else if (!strcmp(parser_tokval(parser), "break"))
3352 return parse_break_continue(parser, block, out, false);
3354 else if (!strcmp(parser_tokval(parser), "continue"))
3356 return parse_break_continue(parser, block, out, true);
3358 else if (!strcmp(parser_tokval(parser), "switch"))
3360 return parse_switch(parser, block, out);
3362 else if (!strcmp(parser_tokval(parser), "case") ||
3363 !strcmp(parser_tokval(parser), "default"))
3366 parseerror(parser, "unexpected 'case' label");
3371 else if (!strcmp(parser_tokval(parser), "goto"))
3373 return parse_goto(parser, out);
3375 else if (!strcmp(parser_tokval(parser), "typedef"))
3377 if (!parser_next(parser)) {
3378 parseerror(parser, "expected type definition after 'typedef'");
3381 return parse_typedef(parser);
3383 parseerror(parser, "Unexpected keyword");
3386 else if (parser->tok == '{')
3389 inner = parse_block(parser);
3392 *out = (ast_expression*)inner;
3395 else if (parser->tok == ':')
3399 if (!parser_next(parser)) {
3400 parseerror(parser, "expected label name");
3403 if (parser->tok != TOKEN_IDENT) {
3404 parseerror(parser, "label must be an identifier");
3407 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3409 if (!label->undefined) {
3410 parseerror(parser, "label `%s` already defined", label->name);
3413 label->undefined = false;
3416 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3417 vec_push(parser->labels, label);
3419 *out = (ast_expression*)label;
3420 if (!parser_next(parser)) {
3421 parseerror(parser, "parse error after label");
3424 for (i = 0; i < vec_size(parser->gotos); ++i) {
3425 if (!strcmp(parser->gotos[i]->name, label->name)) {
3426 ast_goto_set_label(parser->gotos[i], label);
3427 vec_remove(parser->gotos, i, 1);
3433 else if (parser->tok == ';')
3435 if (!parser_next(parser)) {
3436 parseerror(parser, "parse error after empty statement");
3443 ast_expression *exp = parse_expression(parser, false, false);
3447 if (!ast_side_effects(exp)) {
3448 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3455 static bool parse_enum(parser_t *parser)
3458 ast_value **values = NULL;
3459 ast_value *var = NULL;
3462 ast_expression *old;
3464 if (!parser_next(parser) || parser->tok != '{') {
3465 parseerror(parser, "expected `{` after `enum` keyword");
3470 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3471 if (parser->tok == '}') {
3472 /* allow an empty enum */
3475 parseerror(parser, "expected identifier or `}`");
3479 old = parser_find_field(parser, parser_tokval(parser));
3481 old = parser_find_global(parser, parser_tokval(parser));
3483 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3484 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3488 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3489 vec_push(values, var);
3490 var->cvq = CV_CONST;
3491 var->hasvalue = true;
3492 var->constval.vfloat = num++;
3494 parser_addglobal(parser, var->name, (ast_expression*)var);
3496 if (!parser_next(parser)) {
3497 parseerror(parser, "expected `=`, `}` or comma after identifier");
3501 if (parser->tok == ',')
3503 if (parser->tok == '}')
3505 if (parser->tok != '=') {
3506 parseerror(parser, "expected `=`, `}` or comma after identifier");
3510 if (!parser_next(parser)) {
3511 parseerror(parser, "expected expression after `=`");
3515 /* We got a value! */
3516 old = parse_expression_leave(parser, true, false, false);
3517 asvalue = (ast_value*)old;
3518 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3519 compile_error(ast_ctx(var), "constant value or expression expected");
3522 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3524 if (parser->tok == '}')
3526 if (parser->tok != ',') {
3527 parseerror(parser, "expected `}` or comma after expression");
3532 if (parser->tok != '}') {
3533 parseerror(parser, "internal error: breaking without `}`");
3537 if (!parser_next(parser) || parser->tok != ';') {
3538 parseerror(parser, "expected semicolon after enumeration");
3542 if (!parser_next(parser)) {
3543 parseerror(parser, "parse error after enumeration");
3555 static bool parse_block_into(parser_t *parser, ast_block *block)
3559 parser_enterblock(parser);
3561 if (!parser_next(parser)) { /* skip the '{' */
3562 parseerror(parser, "expected function body");
3566 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3568 ast_expression *expr = NULL;
3569 if (parser->tok == '}')
3572 if (!parse_statement(parser, block, &expr, false)) {
3573 /* parseerror(parser, "parse error"); */
3579 if (!ast_block_add_expr(block, expr)) {
3586 if (parser->tok != '}') {
3589 (void)parser_next(parser);
3593 if (!parser_leaveblock(parser))
3595 return retval && !!block;
3598 static ast_block* parse_block(parser_t *parser)
3601 block = ast_block_new(parser_ctx(parser));
3604 if (!parse_block_into(parser, block)) {
3605 ast_block_delete(block);
3611 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3613 if (parser->tok == '{') {
3614 *out = (ast_expression*)parse_block(parser);
3617 return parse_statement(parser, NULL, out, false);
3620 static bool create_vector_members(ast_value *var, ast_member **me)
3623 size_t len = strlen(var->name);
3625 for (i = 0; i < 3; ++i) {
3626 char *name = (char*)mem_a(len+3);
3627 memcpy(name, var->name, len);
3629 name[len+1] = 'x'+i;
3631 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3640 do { ast_member_delete(me[--i]); } while(i);
3644 static bool parse_function_body(parser_t *parser, ast_value *var)
3646 ast_block *block = NULL;
3651 ast_expression *framenum = NULL;
3652 ast_expression *nextthink = NULL;
3653 /* None of the following have to be deleted */
3654 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3655 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3656 bool has_frame_think;
3660 has_frame_think = false;
3661 old = parser->function;
3663 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3664 parseerror(parser, "gotos/labels leaking");
3668 if (var->expression.flags & AST_FLAG_VARIADIC) {
3669 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3670 "variadic function with implementation will not be able to access additional parameters"))
3676 if (parser->tok == '[') {
3677 /* got a frame definition: [ framenum, nextthink ]
3678 * this translates to:
3679 * self.frame = framenum;
3680 * self.nextthink = time + 0.1;
3681 * self.think = nextthink;
3685 fld_think = parser_find_field(parser, "think");
3686 fld_nextthink = parser_find_field(parser, "nextthink");
3687 fld_frame = parser_find_field(parser, "frame");
3688 if (!fld_think || !fld_nextthink || !fld_frame) {
3689 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3690 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3693 gbl_time = parser_find_global(parser, "time");
3694 gbl_self = parser_find_global(parser, "self");
3695 if (!gbl_time || !gbl_self) {
3696 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3697 parseerror(parser, "please declare the following globals: `time`, `self`");
3701 if (!parser_next(parser))
3704 framenum = parse_expression_leave(parser, true, false, false);
3706 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3709 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3710 ast_unref(framenum);
3711 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3715 if (parser->tok != ',') {
3716 ast_unref(framenum);
3717 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3718 parseerror(parser, "Got a %i\n", parser->tok);
3722 if (!parser_next(parser)) {
3723 ast_unref(framenum);
3727 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3729 /* qc allows the use of not-yet-declared functions here
3730 * - this automatically creates a prototype */
3731 ast_value *thinkfunc;
3732 ast_expression *functype = fld_think->expression.next;
3734 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3735 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3736 ast_unref(framenum);
3737 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3741 if (!parser_next(parser)) {
3742 ast_unref(framenum);
3743 ast_delete(thinkfunc);
3747 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3749 nextthink = (ast_expression*)thinkfunc;
3752 nextthink = parse_expression_leave(parser, true, false, false);
3754 ast_unref(framenum);
3755 parseerror(parser, "expected a think-function in [frame,think] notation");
3760 if (!ast_istype(nextthink, ast_value)) {
3761 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3765 if (retval && parser->tok != ']') {
3766 parseerror(parser, "expected closing `]` for [frame,think] notation");
3770 if (retval && !parser_next(parser)) {
3774 if (retval && parser->tok != '{') {
3775 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3780 ast_unref(nextthink);
3781 ast_unref(framenum);
3785 has_frame_think = true;
3788 block = ast_block_new(parser_ctx(parser));
3790 parseerror(parser, "failed to allocate block");
3791 if (has_frame_think) {
3792 ast_unref(nextthink);
3793 ast_unref(framenum);
3798 if (has_frame_think) {
3800 ast_expression *self_frame;
3801 ast_expression *self_nextthink;
3802 ast_expression *self_think;
3803 ast_expression *time_plus_1;
3804 ast_store *store_frame;
3805 ast_store *store_nextthink;
3806 ast_store *store_think;
3808 ctx = parser_ctx(parser);
3809 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3810 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3811 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3813 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3814 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3816 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3817 if (self_frame) ast_delete(self_frame);
3818 if (self_nextthink) ast_delete(self_nextthink);
3819 if (self_think) ast_delete(self_think);
3820 if (time_plus_1) ast_delete(time_plus_1);
3826 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3827 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3828 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3831 ast_delete(self_frame);
3834 if (!store_nextthink) {
3835 ast_delete(self_nextthink);
3839 ast_delete(self_think);
3843 if (store_frame) ast_delete(store_frame);
3844 if (store_nextthink) ast_delete(store_nextthink);
3845 if (store_think) ast_delete(store_think);
3848 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3849 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3850 !ast_block_add_expr(block, (ast_expression*)store_think))
3857 parseerror(parser, "failed to generate code for [frame,think]");
3858 ast_unref(nextthink);
3859 ast_unref(framenum);
3865 parser_enterblock(parser);
3867 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3869 ast_value *param = var->expression.params[parami];
3872 if (param->expression.vtype != TYPE_VECTOR &&
3873 (param->expression.vtype != TYPE_FIELD ||
3874 param->expression.next->expression.vtype != TYPE_VECTOR))
3879 if (!create_vector_members(param, me)) {
3880 ast_block_delete(block);
3884 for (e = 0; e < 3; ++e) {
3885 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3886 ast_block_collect(block, (ast_expression*)me[e]);
3890 func = ast_function_new(ast_ctx(var), var->name, var);
3892 parseerror(parser, "failed to allocate function for `%s`", var->name);
3893 ast_block_delete(block);
3896 vec_push(parser->functions, func);
3898 if (var->expression.flags & AST_FLAG_VARIADIC) {
3900 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
3901 varargs->expression.flags |= AST_FLAG_IS_VARARG;
3902 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
3903 varargs->expression.count = 0;
3904 snprintf(name, sizeof(name), "%s##va##SET", var->name);
3905 if (!parser_create_array_setter_proto(parser, varargs, name)) {
3906 ast_delete(varargs);
3907 ast_block_delete(block);
3910 snprintf(name, sizeof(name), "%s##va##GET", var->name);
3911 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
3912 ast_delete(varargs);
3913 ast_block_delete(block);
3916 func->varargs = varargs;
3919 parser->function = func;
3920 if (!parse_block_into(parser, block)) {
3921 ast_block_delete(block);
3925 vec_push(func->blocks, block);
3927 parser->function = old;
3928 if (!parser_leaveblock(parser))
3930 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3931 parseerror(parser, "internal error: local scopes left");
3935 if (parser->tok == ';')
3936 return parser_next(parser);
3937 else if (opts.standard == COMPILER_QCC)
3938 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3942 vec_pop(parser->functions);
3943 ast_function_delete(func);
3944 var->constval.vfunc = NULL;
3947 (void)!parser_leaveblock(parser);
3948 parser->function = old;
3952 static ast_expression *array_accessor_split(
3957 ast_expression *left,
3958 ast_expression *right
3964 lex_ctx ctx = ast_ctx(array);
3966 if (!left || !right) {
3967 if (left) ast_delete(left);
3968 if (right) ast_delete(right);
3972 cmp = ast_binary_new(ctx, INSTR_LT,
3973 (ast_expression*)index,
3974 (ast_expression*)parser_const_float(parser, middle));
3978 parseerror(parser, "internal error: failed to create comparison for array setter");
3982 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3984 ast_delete(cmp); /* will delete left and right */
3985 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3989 return (ast_expression*)ifthen;
3992 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3994 lex_ctx ctx = ast_ctx(array);
3996 if (from+1 == afterend) {
3997 /* set this value */
4000 ast_array_index *subscript;
4002 int assignop = type_store_instr[value->expression.vtype];
4004 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
4005 assignop = INSTR_STORE_V;
4007 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4011 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4013 ast_delete(subscript);
4017 block = ast_block_new(ctx);
4023 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4028 ret = ast_return_new(ctx, NULL);
4034 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4039 return (ast_expression*)block;
4041 ast_expression *left, *right;
4042 size_t diff = afterend - from;
4043 size_t middle = from + diff/2;
4044 left = array_setter_node(parser, array, index, value, from, middle);
4045 right = array_setter_node(parser, array, index, value, middle, afterend);
4046 return array_accessor_split(parser, array, index, middle, left, right);
4050 static ast_expression *array_field_setter_node(
4059 lex_ctx ctx = ast_ctx(array);
4061 if (from+1 == afterend) {
4062 /* set this value */
4065 ast_entfield *entfield;
4066 ast_array_index *subscript;
4068 int assignop = type_storep_instr[value->expression.vtype];
4070 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
4071 assignop = INSTR_STOREP_V;
4073 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4077 entfield = ast_entfield_new_force(ctx,
4078 (ast_expression*)entity,
4079 (ast_expression*)subscript,
4080 (ast_expression*)subscript);
4082 ast_delete(subscript);
4086 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4088 ast_delete(entfield);
4092 block = ast_block_new(ctx);
4098 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4103 ret = ast_return_new(ctx, NULL);
4109 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4114 return (ast_expression*)block;
4116 ast_expression *left, *right;
4117 size_t diff = afterend - from;
4118 size_t middle = from + diff/2;
4119 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4120 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4121 return array_accessor_split(parser, array, index, middle, left, right);
4125 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4127 lex_ctx ctx = ast_ctx(array);
4129 if (from+1 == afterend) {
4131 ast_array_index *subscript;
4133 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4137 ret = ast_return_new(ctx, (ast_expression*)subscript);
4139 ast_delete(subscript);
4143 return (ast_expression*)ret;
4145 ast_expression *left, *right;
4146 size_t diff = afterend - from;
4147 size_t middle = from + diff/2;
4148 left = array_getter_node(parser, array, index, from, middle);
4149 right = array_getter_node(parser, array, index, middle, afterend);
4150 return array_accessor_split(parser, array, index, middle, left, right);
4154 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4156 ast_function *func = NULL;
4157 ast_value *fval = NULL;
4158 ast_block *body = NULL;
4160 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4162 parseerror(parser, "failed to create accessor function value");
4166 func = ast_function_new(ast_ctx(array), funcname, fval);
4169 parseerror(parser, "failed to create accessor function node");
4173 body = ast_block_new(ast_ctx(array));
4175 parseerror(parser, "failed to create block for array accessor");
4181 vec_push(func->blocks, body);
4184 vec_push(parser->accessors, fval);
4189 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4191 ast_value *index = NULL;
4192 ast_value *value = NULL;
4196 if (!ast_istype(array->expression.next, ast_value)) {
4197 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4201 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4203 func = fval->constval.vfunc;
4204 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4206 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4207 value = ast_value_copy((ast_value*)array->expression.next);
4209 if (!index || !value) {
4210 parseerror(parser, "failed to create locals for array accessor");
4213 (void)!ast_value_set_name(value, "value"); /* not important */
4214 vec_push(fval->expression.params, index);
4215 vec_push(fval->expression.params, value);
4217 array->setter = fval;
4220 if (index) ast_delete(index);
4221 if (value) ast_delete(value);
4227 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4229 ast_expression *root = NULL;
4230 root = array_setter_node(parser, array,
4231 array->setter->expression.params[0],
4232 array->setter->expression.params[1],
4233 0, array->expression.count);
4235 parseerror(parser, "failed to build accessor search tree");
4238 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4245 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4247 if (!parser_create_array_setter_proto(parser, array, funcname))
4249 return parser_create_array_setter_impl(parser, array);
4252 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4254 ast_expression *root = NULL;
4255 ast_value *entity = NULL;
4256 ast_value *index = NULL;
4257 ast_value *value = NULL;
4261 if (!ast_istype(array->expression.next, ast_value)) {
4262 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4266 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4268 func = fval->constval.vfunc;
4269 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4271 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4272 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4273 value = ast_value_copy((ast_value*)array->expression.next);
4274 if (!entity || !index || !value) {
4275 parseerror(parser, "failed to create locals for array accessor");
4278 (void)!ast_value_set_name(value, "value"); /* not important */
4279 vec_push(fval->expression.params, entity);
4280 vec_push(fval->expression.params, index);
4281 vec_push(fval->expression.params, value);
4283 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4285 parseerror(parser, "failed to build accessor search tree");
4289 array->setter = fval;
4290 return ast_block_add_expr(func->blocks[0], root);
4292 if (entity) ast_delete(entity);
4293 if (index) ast_delete(index);
4294 if (value) ast_delete(value);
4295 if (root) ast_delete(root);
4301 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4303 ast_value *index = NULL;
4307 /* NOTE: checking array->expression.next rather than elemtype since
4308 * for fields elemtype is a temporary fieldtype.
4310 if (!ast_istype(array->expression.next, ast_value)) {
4311 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4315 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4317 func = fval->constval.vfunc;
4318 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4320 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4323 parseerror(parser, "failed to create locals for array accessor");
4326 vec_push(fval->expression.params, index);
4328 array->getter = fval;
4331 if (index) ast_delete(index);
4337 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4339 ast_expression *root = NULL;
4341 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4343 parseerror(parser, "failed to build accessor search tree");
4346 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4353 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4355 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4357 return parser_create_array_getter_impl(parser, array);
4360 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4361 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4369 bool variadic = false;
4370 ast_value *varparam = NULL;
4371 char *argcounter = NULL;
4373 ctx = parser_ctx(parser);
4375 /* for the sake of less code we parse-in in this function */
4376 if (!parser_next(parser)) {
4377 parseerror(parser, "expected parameter list");
4383 /* parse variables until we hit a closing paren */
4384 while (parser->tok != ')') {
4386 /* there must be commas between them */
4387 if (parser->tok != ',') {
4388 parseerror(parser, "expected comma or end of parameter list");
4391 if (!parser_next(parser)) {
4392 parseerror(parser, "expected parameter");
4398 if (parser->tok == TOKEN_DOTS) {
4399 /* '...' indicates a varargs function */
4401 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4402 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4405 if (parser->tok == TOKEN_IDENT) {
4406 argcounter = util_strdup(parser_tokval(parser));
4407 if (!parser_next(parser) || parser->tok != ')') {
4408 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4415 /* for anything else just parse a typename */
4416 param = parse_typename(parser, NULL, NULL);
4419 vec_push(params, param);
4420 if (param->expression.vtype >= TYPE_VARIANT) {
4421 char tname[1024]; /* typename is reserved in C++ */
4422 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4423 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4426 /* type-restricted varargs */
4427 if (parser->tok == TOKEN_DOTS) {
4429 varparam = vec_last(params);
4431 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4432 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4435 if (parser->tok == TOKEN_IDENT) {
4436 argcounter = util_strdup(parser_tokval(parser));
4437 if (!parser_next(parser) || parser->tok != ')') {
4438 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4446 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4450 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
4451 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4454 if (!parser_next(parser)) {
4455 parseerror(parser, "parse error after typename");
4459 /* now turn 'var' into a function type */
4460 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4461 fval->expression.next = (ast_expression*)var;
4463 fval->expression.flags |= AST_FLAG_VARIADIC;
4466 var->expression.params = params;
4467 var->expression.varparam = (ast_expression*)varparam;
4468 var->argcounter = argcounter;
4477 for (i = 0; i < vec_size(params); ++i)
4478 ast_delete(params[i]);
4483 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4485 ast_expression *cexp;
4486 ast_value *cval, *tmp;
4489 ctx = parser_ctx(parser);
4491 if (!parser_next(parser)) {
4493 parseerror(parser, "expected array-size");
4497 cexp = parse_expression_leave(parser, true, false, false);
4499 if (!cexp || !ast_istype(cexp, ast_value)) {
4503 parseerror(parser, "expected array-size as constant positive integer");
4506 cval = (ast_value*)cexp;
4508 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4509 tmp->expression.next = (ast_expression*)var;
4512 if (cval->expression.vtype == TYPE_INTEGER)
4513 tmp->expression.count = cval->constval.vint;
4514 else if (cval->expression.vtype == TYPE_FLOAT)
4515 tmp->expression.count = cval->constval.vfloat;
4519 parseerror(parser, "array-size must be a positive integer constant");
4524 if (parser->tok != ']') {
4526 parseerror(parser, "expected ']' after array-size");
4529 if (!parser_next(parser)) {
4531 parseerror(parser, "error after parsing array size");
4537 /* Parse a complete typename.
4538 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4539 * but when parsing variables separated by comma
4540 * 'storebase' should point to where the base-type should be kept.
4541 * The base type makes up every bit of type information which comes *before* the
4544 * The following will be parsed in its entirety:
4546 * The 'basetype' in this case is 'void()'
4547 * and if there's a comma after it, say:
4549 * then the type-information 'void()' can be stored in 'storebase'
4551 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4553 ast_value *var, *tmp;
4556 const char *name = NULL;
4557 bool isfield = false;
4558 bool wasarray = false;
4559 size_t morefields = 0;
4561 ctx = parser_ctx(parser);
4563 /* types may start with a dot */
4564 if (parser->tok == '.') {
4566 /* if we parsed a dot we need a typename now */
4567 if (!parser_next(parser)) {
4568 parseerror(parser, "expected typename for field definition");
4572 /* Further dots are handled seperately because they won't be part of the
4575 while (parser->tok == '.') {
4577 if (!parser_next(parser)) {
4578 parseerror(parser, "expected typename for field definition");
4583 if (parser->tok == TOKEN_IDENT)
4584 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4585 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4586 parseerror(parser, "expected typename");
4590 /* generate the basic type value */
4591 if (cached_typedef) {
4592 var = ast_value_copy(cached_typedef);
4593 ast_value_set_name(var, "<type(from_def)>");
4595 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4597 for (; morefields; --morefields) {
4598 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4599 tmp->expression.next = (ast_expression*)var;
4603 /* do not yet turn into a field - remember:
4604 * .void() foo; is a field too
4605 * .void()() foo; is a function
4609 if (!parser_next(parser)) {
4611 parseerror(parser, "parse error after typename");
4615 /* an opening paren now starts the parameter-list of a function
4616 * this is where original-QC has parameter lists.
4617 * We allow a single parameter list here.
4618 * Much like fteqcc we don't allow `float()() x`
4620 if (parser->tok == '(') {
4621 var = parse_parameter_list(parser, var);
4626 /* store the base if requested */
4628 *storebase = ast_value_copy(var);
4630 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4631 tmp->expression.next = (ast_expression*)*storebase;
4636 /* there may be a name now */
4637 if (parser->tok == TOKEN_IDENT) {
4638 name = util_strdup(parser_tokval(parser));
4640 if (!parser_next(parser)) {
4642 parseerror(parser, "error after variable or field declaration");
4647 /* now this may be an array */
4648 if (parser->tok == '[') {
4650 var = parse_arraysize(parser, var);
4655 /* This is the point where we can turn it into a field */
4657 /* turn it into a field if desired */
4658 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4659 tmp->expression.next = (ast_expression*)var;
4663 /* now there may be function parens again */
4664 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
4665 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4666 if (parser->tok == '(' && wasarray)
4667 parseerror(parser, "arrays as part of a return type is not supported");
4668 while (parser->tok == '(') {
4669 var = parse_parameter_list(parser, var);
4678 /* finally name it */
4680 if (!ast_value_set_name(var, name)) {
4682 parseerror(parser, "internal error: failed to set name");
4685 /* free the name, ast_value_set_name duplicates */
4692 static bool parse_typedef(parser_t *parser)
4694 ast_value *typevar, *oldtype;
4695 ast_expression *old;
4697 typevar = parse_typename(parser, NULL, NULL);
4702 if ( (old = parser_find_var(parser, typevar->name)) ) {
4703 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4704 " -> `%s` has been declared here: %s:%i",
4705 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4706 ast_delete(typevar);
4710 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4711 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4712 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4713 ast_delete(typevar);
4717 vec_push(parser->_typedefs, typevar);
4718 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4720 if (parser->tok != ';') {
4721 parseerror(parser, "expected semicolon after typedef");
4724 if (!parser_next(parser)) {
4725 parseerror(parser, "parse error after typedef");
4732 static const char *cvq_to_str(int cvq) {
4734 case CV_NONE: return "none";
4735 case CV_VAR: return "`var`";
4736 case CV_CONST: return "`const`";
4737 default: return "<INVALID>";
4741 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4744 if (proto->cvq != var->cvq) {
4745 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4746 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4747 parser->tok == '='))
4749 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4750 "`%s` declared with different qualifiers: %s\n"
4751 " -> previous declaration here: %s:%i uses %s",
4752 var->name, cvq_to_str(var->cvq),
4753 ast_ctx(proto).file, ast_ctx(proto).line,
4754 cvq_to_str(proto->cvq));
4757 av = (var ->expression.flags & AST_FLAG_NORETURN);
4758 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4760 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4761 "`%s` declared with different attributes%s\n"
4762 " -> previous declaration here: %s:%i",
4763 var->name, (av ? ": noreturn" : ""),
4764 ast_ctx(proto).file, ast_ctx(proto).line,
4765 (ao ? ": noreturn" : ""));
4770 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)
4774 ast_expression *old;
4778 ast_value *basetype = NULL;
4780 bool isparam = false;
4781 bool isvector = false;
4782 bool cleanvar = true;
4783 bool wasarray = false;
4787 if (!localblock && is_static)
4788 parseerror(parser, "`static` qualifier is not supported in global scope");
4790 /* get the first complete variable */
4791 var = parse_typename(parser, &basetype, cached_typedef);
4794 ast_delete(basetype);
4802 /* Part 0: finish the type */
4803 if (parser->tok == '(') {
4804 if (opts.standard == COMPILER_QCC)
4805 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4806 var = parse_parameter_list(parser, var);
4812 /* we only allow 1-dimensional arrays */
4813 if (parser->tok == '[') {
4815 var = parse_arraysize(parser, var);
4821 if (parser->tok == '(' && wasarray) {
4822 parseerror(parser, "arrays as part of a return type is not supported");
4823 /* we'll still parse the type completely for now */
4825 /* for functions returning functions */
4826 while (parser->tok == '(') {
4827 if (opts.standard == COMPILER_QCC)
4828 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4829 var = parse_parameter_list(parser, var);
4836 var->cvq = qualifier;
4837 var->expression.flags |= qflags;
4838 if (var->expression.flags & AST_FLAG_DEPRECATED)
4839 var->desc = vstring;
4842 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4843 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4844 * is then filled with the previous definition and the parameter-names replaced.
4846 if (!strcmp(var->name, "nil")) {
4847 if (OPTS_FLAG(UNTYPED_NIL)) {
4848 if (!localblock || !OPTS_FLAG(PERMISSIVE))
4849 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
4851 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
4854 /* Deal with end_sys_ vars */
4856 if (!strcmp(var->name, "end_sys_globals")) {
4858 parser->crc_globals = vec_size(parser->globals);
4861 else if (!strcmp(var->name, "end_sys_fields")) {
4863 parser->crc_fields = vec_size(parser->fields);
4866 if (was_end && var->expression.vtype == TYPE_FIELD) {
4867 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4868 "global '%s' hint should not be a field",
4869 parser_tokval(parser)))
4876 if (!nofields && var->expression.vtype == TYPE_FIELD)
4878 /* deal with field declarations */
4879 old = parser_find_field(parser, var->name);
4881 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4882 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
4891 parseerror(parser, "field `%s` already declared here: %s:%i",
4892 var->name, ast_ctx(old).file, ast_ctx(old).line);
4897 if (opts.standard == COMPILER_QCC &&
4898 (old = parser_find_global(parser, var->name)))
4900 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4901 parseerror(parser, "field `%s` already declared here: %s:%i",
4902 var->name, ast_ctx(old).file, ast_ctx(old).line);
4909 /* deal with other globals */
4910 old = parser_find_global(parser, var->name);
4911 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
4913 /* This is a function which had a prototype */
4914 if (!ast_istype(old, ast_value)) {
4915 parseerror(parser, "internal error: prototype is not an ast_value");
4919 proto = (ast_value*)old;
4920 proto->desc = var->desc;
4921 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
4922 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
4924 ast_ctx(proto).file, ast_ctx(proto).line);
4928 /* we need the new parameter-names */
4929 for (i = 0; i < vec_size(proto->expression.params); ++i)
4930 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4931 if (!parser_check_qualifiers(parser, var, proto)) {
4938 proto->expression.flags |= var->expression.flags;
4946 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4947 "global `%s` already declared here: %s:%i",
4948 var->name, ast_ctx(old).file, ast_ctx(old).line))
4953 proto = (ast_value*)old;
4954 if (!ast_istype(old, ast_value)) {
4955 parseerror(parser, "internal error: not an ast_value");
4960 if (!parser_check_qualifiers(parser, var, proto)) {
4965 proto->expression.flags |= var->expression.flags;
4969 if (opts.standard == COMPILER_QCC &&
4970 (old = parser_find_field(parser, var->name)))
4972 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4973 parseerror(parser, "global `%s` already declared here: %s:%i",
4974 var->name, ast_ctx(old).file, ast_ctx(old).line);
4981 else /* it's not a global */
4983 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4984 if (old && !isparam) {
4985 parseerror(parser, "local `%s` already declared here: %s:%i",
4986 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4990 old = parser_find_local(parser, var->name, 0, &isparam);
4991 if (old && isparam) {
4992 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4993 "local `%s` is shadowing a parameter", var->name))
4995 parseerror(parser, "local `%s` already declared here: %s:%i",
4996 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5000 if (opts.standard != COMPILER_GMQCC) {
5008 /* in a noref section we simply bump the usecount */
5009 if (noref || parser->noref)
5013 * Create the global/local, and deal with vector types.
5016 if (var->expression.vtype == TYPE_VECTOR)
5018 else if (var->expression.vtype == TYPE_FIELD &&
5019 var->expression.next->expression.vtype == TYPE_VECTOR)
5023 if (!create_vector_members(var, me)) {
5030 /* deal with global variables, fields, functions */
5031 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5032 var->isfield = true;
5033 vec_push(parser->fields, (ast_expression*)var);
5034 util_htset(parser->htfields, var->name, var);
5036 for (i = 0; i < 3; ++i) {
5037 vec_push(parser->fields, (ast_expression*)me[i]);
5038 util_htset(parser->htfields, me[i]->name, me[i]);
5043 parser_addglobal(parser, var->name, (ast_expression*)var);
5045 for (i = 0; i < 3; ++i) {
5046 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5052 /* a static adds itself to be generated like any other global
5053 * but is added to the local namespace instead
5055 char *defname = NULL;
5056 size_t prefix_len, ln;
5058 ln = strlen(parser->function->name);
5059 vec_append(defname, ln, parser->function->name);
5061 vec_append(defname, 2, "::");
5062 /* remember the length up to here */
5063 prefix_len = vec_size(defname);
5065 /* Add it to the local scope */
5066 util_htset(vec_last(parser->variables), var->name, (void*)var);
5070 vec_last(parser->correct_variables),
5071 &vec_last(parser->correct_variables_score),
5075 /* now rename the global */
5076 ln = strlen(var->name);
5077 vec_append(defname, ln, var->name);
5078 ast_value_set_name(var, defname);
5080 /* push it to the to-be-generated globals */
5081 vec_push(parser->globals, (ast_expression*)var);
5083 /* same game for the vector members */
5085 for (i = 0; i < 3; ++i) {
5086 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5090 vec_last(parser->correct_variables),
5091 &vec_last(parser->correct_variables_score),
5095 vec_shrinkto(defname, prefix_len);
5096 ln = strlen(me[i]->name);
5097 vec_append(defname, ln, me[i]->name);
5098 ast_member_set_name(me[i], defname);
5100 vec_push(parser->globals, (ast_expression*)me[i]);
5105 vec_push(localblock->locals, var);
5106 parser_addlocal(parser, var->name, (ast_expression*)var);
5108 for (i = 0; i < 3; ++i) {
5109 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5110 ast_block_collect(localblock, (ast_expression*)me[i]);
5116 me[0] = me[1] = me[2] = NULL;
5121 if (var->expression.vtype == TYPE_ARRAY) {
5123 snprintf(name, sizeof(name), "%s##SET", var->name);
5124 if (!parser_create_array_setter(parser, var, name))
5126 snprintf(name, sizeof(name), "%s##GET", var->name);
5127 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5130 else if (!localblock && !nofields &&
5131 var->expression.vtype == TYPE_FIELD &&
5132 var->expression.next->expression.vtype == TYPE_ARRAY)
5135 ast_expression *telem;
5137 ast_value *array = (ast_value*)var->expression.next;
5139 if (!ast_istype(var->expression.next, ast_value)) {
5140 parseerror(parser, "internal error: field element type must be an ast_value");
5144 snprintf(name, sizeof(name), "%s##SETF", var->name);
5145 if (!parser_create_array_field_setter(parser, array, name))
5148 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5149 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5150 tfield->expression.next = telem;
5151 snprintf(name, sizeof(name), "%s##GETFP", var->name);
5152 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5160 if (parser->tok == ';') {
5161 ast_delete(basetype);
5162 if (!parser_next(parser)) {
5163 parseerror(parser, "error after variable declaration");
5169 if (parser->tok == ',')
5173 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5176 parseerror(parser, "missing comma or semicolon while parsing variables");
5180 if (localblock && opts.standard == COMPILER_QCC) {
5181 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5182 "initializing expression turns variable `%s` into a constant in this standard",
5189 if (parser->tok != '{') {
5190 if (parser->tok != '=') {
5191 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5195 if (!parser_next(parser)) {
5196 parseerror(parser, "error parsing initializer");
5200 else if (opts.standard == COMPILER_QCC) {
5201 parseerror(parser, "expected '=' before function body in this standard");
5204 if (parser->tok == '#') {
5205 ast_function *func = NULL;
5208 parseerror(parser, "cannot declare builtins within functions");
5211 if (var->expression.vtype != TYPE_FUNCTION) {
5212 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5215 if (!parser_next(parser)) {
5216 parseerror(parser, "expected builtin number");
5219 if (parser->tok != TOKEN_INTCONST) {
5220 parseerror(parser, "builtin number must be an integer constant");
5223 if (parser_token(parser)->constval.i < 0) {
5224 parseerror(parser, "builtin number must be an integer greater than zero");
5228 if (var->hasvalue) {
5229 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5230 "builtin `%s` has already been defined\n"
5231 " -> previous declaration here: %s:%i",
5232 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5236 func = ast_function_new(ast_ctx(var), var->name, var);
5238 parseerror(parser, "failed to allocate function for `%s`", var->name);
5241 vec_push(parser->functions, func);
5243 func->builtin = -parser_token(parser)->constval.i-1;
5246 if (!parser_next(parser)) {
5247 parseerror(parser, "expected comma or semicolon");
5249 ast_function_delete(func);
5250 var->constval.vfunc = NULL;
5254 else if (parser->tok == '{' || parser->tok == '[')
5257 parseerror(parser, "cannot declare functions within functions");
5262 ast_ctx(proto) = parser_ctx(parser);
5264 if (!parse_function_body(parser, var))
5266 ast_delete(basetype);
5267 for (i = 0; i < vec_size(parser->gotos); ++i)
5268 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5269 vec_free(parser->gotos);
5270 vec_free(parser->labels);
5273 ast_expression *cexp;
5276 cexp = parse_expression_leave(parser, true, false, false);
5281 cval = (ast_value*)cexp;
5282 if (cval != parser->nil &&
5283 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5286 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5290 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5291 qualifier != CV_VAR)
5293 var->cvq = CV_CONST;
5295 if (cval == parser->nil)
5296 var->expression.flags |= AST_FLAG_INITIALIZED;
5299 var->hasvalue = true;
5300 if (cval->expression.vtype == TYPE_STRING)
5301 var->constval.vstring = parser_strdup(cval->constval.vstring);
5302 else if (cval->expression.vtype == TYPE_FIELD)
5303 var->constval.vfield = cval;
5305 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5311 shunt sy = { NULL, NULL };
5314 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5315 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5316 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5317 if (!parser_sy_apply_operator(parser, &sy))
5320 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5321 parseerror(parser, "internal error: leaked operands");
5322 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5332 if (parser->tok == ',') {
5333 if (!parser_next(parser)) {
5334 parseerror(parser, "expected another variable");
5338 if (parser->tok != TOKEN_IDENT) {
5339 parseerror(parser, "expected another variable");
5342 var = ast_value_copy(basetype);
5344 ast_value_set_name(var, parser_tokval(parser));
5345 if (!parser_next(parser)) {
5346 parseerror(parser, "error parsing variable declaration");
5352 if (parser->tok != ';') {
5353 parseerror(parser, "missing semicolon after variables");
5357 if (!parser_next(parser)) {
5358 parseerror(parser, "parse error after variable declaration");
5362 ast_delete(basetype);
5366 if (cleanvar && var)
5368 ast_delete(basetype);
5372 ast_delete(basetype);
5373 if (cleanvar && var)
5375 if (me[0]) ast_member_delete(me[0]);
5376 if (me[1]) ast_member_delete(me[1]);
5377 if (me[2]) ast_member_delete(me[2]);
5381 static bool parser_global_statement(parser_t *parser)
5385 bool is_static = false;
5386 uint32_t qflags = 0;
5387 ast_value *istype = NULL;
5388 char *vstring = NULL;
5390 if (parser->tok == TOKEN_IDENT)
5391 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5393 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5395 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5397 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5399 if (cvq == CV_WRONG)
5401 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5403 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5405 return parse_enum(parser);
5407 else if (parser->tok == TOKEN_KEYWORD)
5409 if (!strcmp(parser_tokval(parser), "typedef")) {
5410 if (!parser_next(parser)) {
5411 parseerror(parser, "expected type definition after 'typedef'");
5414 return parse_typedef(parser);
5416 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5419 else if (parser->tok == '#')
5421 return parse_pragma(parser);
5423 else if (parser->tok == '$')
5425 if (!parser_next(parser)) {
5426 parseerror(parser, "parse error");
5432 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
5438 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5440 return util_crc16(old, str, strlen(str));
5443 static void progdefs_crc_file(const char *str)
5445 /* write to progdefs.h here */
5449 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5451 old = progdefs_crc_sum(old, str);
5452 progdefs_crc_file(str);
5456 static void generate_checksum(parser_t *parser)
5458 uint16_t crc = 0xFFFF;
5462 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5463 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5465 progdefs_crc_file("\tint\tpad;\n");
5466 progdefs_crc_file("\tint\tofs_return[3];\n");
5467 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5468 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5469 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5470 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5471 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5472 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5473 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5474 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5476 for (i = 0; i < parser->crc_globals; ++i) {
5477 if (!ast_istype(parser->globals[i], ast_value))
5479 value = (ast_value*)(parser->globals[i]);
5480 switch (value->expression.vtype) {
5481 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5482 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5483 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5484 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5486 crc = progdefs_crc_both(crc, "\tint\t");
5489 crc = progdefs_crc_both(crc, value->name);
5490 crc = progdefs_crc_both(crc, ";\n");
5492 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5493 for (i = 0; i < parser->crc_fields; ++i) {
5494 if (!ast_istype(parser->fields[i], ast_value))
5496 value = (ast_value*)(parser->fields[i]);
5497 switch (value->expression.next->expression.vtype) {
5498 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5499 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5500 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5501 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5503 crc = progdefs_crc_both(crc, "\tint\t");
5506 crc = progdefs_crc_both(crc, value->name);
5507 crc = progdefs_crc_both(crc, ";\n");
5509 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5514 static parser_t *parser;
5521 parser = (parser_t*)mem_a(sizeof(parser_t));
5525 memset(parser, 0, sizeof(*parser));
5527 for (i = 0; i < operator_count; ++i) {
5528 if (operators[i].id == opid1('=')) {
5529 parser->assign_op = operators+i;
5533 if (!parser->assign_op) {
5534 printf("internal error: initializing parser: failed to find assign operator\n");
5539 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5540 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5541 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5542 vec_push(parser->_blocktypedefs, 0);
5545 vec_push(parser->correct_variables, correct_trie_new());
5546 vec_push(parser->correct_variables_score, NULL);
5548 empty_ctx.file = "<internal>";
5550 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
5551 parser->nil->cvq = CV_CONST;
5552 if (OPTS_FLAG(UNTYPED_NIL))
5553 util_htset(parser->htglobals, "nil", (void*)parser->nil);
5555 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
5556 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
5557 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
5559 if (opts.add_info) {
5560 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
5561 parser->reserved_version->cvq = CV_CONST;
5562 parser->reserved_version->hasvalue = true;
5563 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
5564 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
5566 parser->reserved_version = NULL;
5571 bool parser_compile()
5573 /* initial lexer/parser state */
5574 parser->lex->flags.noops = true;
5576 if (parser_next(parser))
5578 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
5580 if (!parser_global_statement(parser)) {
5581 if (parser->tok == TOKEN_EOF)
5582 parseerror(parser, "unexpected eof");
5583 else if (compile_errors)
5584 parseerror(parser, "there have been errors, bailing out");
5585 lex_close(parser->lex);
5591 parseerror(parser, "parse error");
5592 lex_close(parser->lex);
5597 lex_close(parser->lex);
5600 return !compile_errors;
5603 bool parser_compile_file(const char *filename)
5605 parser->lex = lex_open(filename);
5607 con_err("failed to open file \"%s\"\n", filename);
5610 return parser_compile();
5613 bool parser_compile_string(const char *name, const char *str, size_t len)
5615 parser->lex = lex_open_string(str, len, name);
5617 con_err("failed to create lexer for string \"%s\"\n", name);
5620 return parser_compile();
5623 void parser_cleanup()
5626 for (i = 0; i < vec_size(parser->accessors); ++i) {
5627 ast_delete(parser->accessors[i]->constval.vfunc);
5628 parser->accessors[i]->constval.vfunc = NULL;
5629 ast_delete(parser->accessors[i]);
5631 for (i = 0; i < vec_size(parser->functions); ++i) {
5632 ast_delete(parser->functions[i]);
5634 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5635 ast_delete(parser->imm_vector[i]);
5637 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5638 ast_delete(parser->imm_string[i]);
5640 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5641 ast_delete(parser->imm_float[i]);
5643 for (i = 0; i < vec_size(parser->fields); ++i) {
5644 ast_delete(parser->fields[i]);
5646 for (i = 0; i < vec_size(parser->globals); ++i) {
5647 ast_delete(parser->globals[i]);
5649 vec_free(parser->accessors);
5650 vec_free(parser->functions);
5651 vec_free(parser->imm_vector);
5652 vec_free(parser->imm_string);
5653 vec_free(parser->imm_float);
5654 vec_free(parser->globals);
5655 vec_free(parser->fields);
5657 for (i = 0; i < vec_size(parser->variables); ++i)
5658 util_htdel(parser->variables[i]);
5659 vec_free(parser->variables);
5660 vec_free(parser->_blocklocals);
5661 vec_free(parser->_locals);
5664 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
5665 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
5667 vec_free(parser->correct_variables);
5668 vec_free(parser->correct_variables_score);
5671 for (i = 0; i < vec_size(parser->_typedefs); ++i)
5672 ast_delete(parser->_typedefs[i]);
5673 vec_free(parser->_typedefs);
5674 for (i = 0; i < vec_size(parser->typedefs); ++i)
5675 util_htdel(parser->typedefs[i]);
5676 vec_free(parser->typedefs);
5677 vec_free(parser->_blocktypedefs);
5679 vec_free(parser->_block_ctx);
5681 vec_free(parser->labels);
5682 vec_free(parser->gotos);
5683 vec_free(parser->breaks);
5684 vec_free(parser->continues);
5686 ast_value_delete(parser->nil);
5688 ast_value_delete(parser->const_vec[0]);
5689 ast_value_delete(parser->const_vec[1]);
5690 ast_value_delete(parser->const_vec[2]);
5695 bool parser_finish(const char *output)
5701 if (compile_errors) {
5702 con_out("*** there were compile errors\n");
5706 ir = ir_builder_new("gmqcc_out");
5708 con_out("failed to allocate builder\n");
5712 for (i = 0; i < vec_size(parser->fields); ++i) {
5715 if (!ast_istype(parser->fields[i], ast_value))
5717 field = (ast_value*)parser->fields[i];
5718 hasvalue = field->hasvalue;
5719 field->hasvalue = false;
5720 if (!ast_global_codegen((ast_value*)field, ir, true)) {
5721 con_out("failed to generate field %s\n", field->name);
5722 ir_builder_delete(ir);
5727 ast_expression *subtype;
5728 field->hasvalue = true;
5729 subtype = field->expression.next;
5730 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
5731 if (subtype->expression.vtype == TYPE_FIELD)
5732 ifld->fieldtype = subtype->expression.next->expression.vtype;
5733 else if (subtype->expression.vtype == TYPE_FUNCTION)
5734 ifld->outtype = subtype->expression.next->expression.vtype;
5735 (void)!ir_value_set_field(field->ir_v, ifld);
5738 for (i = 0; i < vec_size(parser->globals); ++i) {
5740 if (!ast_istype(parser->globals[i], ast_value))
5742 asvalue = (ast_value*)(parser->globals[i]);
5743 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
5744 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
5745 "unused global: `%s`", asvalue->name);
5747 if (!ast_global_codegen(asvalue, ir, false)) {
5748 con_out("failed to generate global %s\n", asvalue->name);
5749 ir_builder_delete(ir);
5753 /* Build function vararg accessor ast tree now before generating
5754 * immediates, because the accessors may add new immediates
5756 for (i = 0; i < vec_size(parser->functions); ++i) {
5757 ast_function *f = parser->functions[i];
5759 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
5760 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
5761 if (!parser_create_array_setter_impl(parser, f->varargs)) {
5762 con_out("failed to generate vararg setter for %s\n", f->name);
5763 ir_builder_delete(ir);
5766 if (!parser_create_array_getter_impl(parser, f->varargs)) {
5767 con_out("failed to generate vararg getter for %s\n", f->name);
5768 ir_builder_delete(ir);
5772 ast_delete(f->varargs);
5777 /* Now we can generate immediates */
5778 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5779 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
5780 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
5781 ir_builder_delete(ir);
5785 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5786 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
5787 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
5788 ir_builder_delete(ir);
5792 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5793 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
5794 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
5795 ir_builder_delete(ir);
5799 for (i = 0; i < vec_size(parser->globals); ++i) {
5801 if (!ast_istype(parser->globals[i], ast_value))
5803 asvalue = (ast_value*)(parser->globals[i]);
5804 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
5806 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
5807 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
5808 "uninitialized constant: `%s`",
5810 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
5811 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
5812 "uninitialized global: `%s`",
5815 if (!ast_generate_accessors(asvalue, ir)) {
5816 ir_builder_delete(ir);
5820 for (i = 0; i < vec_size(parser->fields); ++i) {
5822 asvalue = (ast_value*)(parser->fields[i]->expression.next);
5824 if (!ast_istype((ast_expression*)asvalue, ast_value))
5826 if (asvalue->expression.vtype != TYPE_ARRAY)
5828 if (!ast_generate_accessors(asvalue, ir)) {
5829 ir_builder_delete(ir);
5833 if (parser->reserved_version &&
5834 !ast_global_codegen(parser->reserved_version, ir, false))
5836 con_out("failed to generate reserved::version");
5837 ir_builder_delete(ir);
5840 for (i = 0; i < vec_size(parser->functions); ++i) {
5841 ast_function *f = parser->functions[i];
5842 if (!ast_function_codegen(f, ir)) {
5843 con_out("failed to generate function %s\n", f->name);
5844 ir_builder_delete(ir);
5849 ir_builder_dump(ir, con_out);
5850 for (i = 0; i < vec_size(parser->functions); ++i) {
5851 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
5852 con_out("failed to finalize function %s\n", parser->functions[i]->name);
5853 ir_builder_delete(ir);
5858 if (compile_Werrors) {
5859 con_out("*** there were warnings treated as errors\n");
5860 compile_show_werrors();
5866 ir_builder_dump(ir, con_out);
5868 generate_checksum(parser);
5870 if (!ir_builder_generate(ir, output)) {
5871 con_out("*** failed to generate output file\n");
5872 ir_builder_delete(ir);
5877 ir_builder_delete(ir);