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
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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 ast_expression * const intrinsic_debug_typestring = (ast_expression*)0x1;
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);
124 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
126 static void parseerror(parser_t *parser, const char *fmt, ...)
130 vcompile_error(parser->lex->tok.ctx, fmt, ap);
134 /* returns true if it counts as an error */
135 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
140 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
145 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
150 r = vcompile_warning(ctx, warntype, fmt, ap);
155 /**********************************************************************
156 * some maths used for constant folding
159 vector vec3_add(vector a, vector b)
168 vector vec3_sub(vector a, vector b)
177 qcfloat vec3_mulvv(vector a, vector b)
179 return (a.x * b.x + a.y * b.y + a.z * b.z);
182 vector vec3_mulvf(vector a, float b)
191 /**********************************************************************
195 bool parser_next(parser_t *parser)
197 /* lex_do kills the previous token */
198 parser->tok = lex_do(parser->lex);
199 if (parser->tok == TOKEN_EOF)
201 if (parser->tok >= TOKEN_ERROR) {
202 parseerror(parser, "lex error");
208 #define parser_tokval(p) ((p)->lex->tok.value)
209 #define parser_token(p) (&((p)->lex->tok))
210 #define parser_ctx(p) ((p)->lex->tok.ctx)
212 static ast_value* parser_const_float(parser_t *parser, double d)
217 for (i = 0; i < vec_size(parser->imm_float); ++i) {
218 const double compare = parser->imm_float[i]->constval.vfloat;
219 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
220 return parser->imm_float[i];
223 ctx = parser_ctx(parser);
225 memset(&ctx, 0, sizeof(ctx));
227 out = ast_value_new(ctx, "#IMMEDIATE", TYPE_FLOAT);
229 out->hasvalue = true;
230 out->constval.vfloat = d;
231 vec_push(parser->imm_float, out);
235 static ast_value* parser_const_float_0(parser_t *parser)
237 if (!parser->imm_float_zero)
238 parser->imm_float_zero = parser_const_float(parser, 0);
239 return parser->imm_float_zero;
242 static ast_value* parser_const_float_1(parser_t *parser)
244 if (!parser->imm_float_one)
245 parser->imm_float_one = parser_const_float(parser, 1);
246 return parser->imm_float_one;
249 static char *parser_strdup(const char *str)
252 /* actually dup empty strings */
253 char *out = (char*)mem_a(1);
257 return util_strdup(str);
260 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
264 for (i = 0; i < vec_size(parser->imm_string); ++i) {
265 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
266 return parser->imm_string[i];
270 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
271 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
273 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
275 out->hasvalue = true;
276 out->constval.vstring = parser_strdup(str);
277 vec_push(parser->imm_string, out);
281 static ast_value* parser_const_vector(parser_t *parser, vector v)
285 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
286 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
287 return parser->imm_vector[i];
289 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
291 out->hasvalue = true;
292 out->constval.vvec = v;
293 vec_push(parser->imm_vector, out);
297 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
303 return parser_const_vector(parser, v);
306 static ast_value* parser_const_vector_0(parser_t *parser)
308 if (!parser->imm_vector_zero)
309 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
310 return parser->imm_vector_zero;
313 static ast_expression* parser_find_field(parser_t *parser, const char *name)
315 return ( ast_expression*)util_htget(parser->htfields, name);
318 static ast_expression* parser_find_label(parser_t *parser, const char *name)
321 for(i = 0; i < vec_size(parser->labels); i++)
322 if (!strcmp(parser->labels[i]->name, name))
323 return (ast_expression*)parser->labels[i];
327 static ast_expression* parser_find_global(parser_t *parser, const char *name)
329 return (ast_expression*)util_htget(parser->htglobals, name);
332 static ast_expression* parser_find_param(parser_t *parser, const char *name)
336 if (!parser->function)
338 fun = parser->function->vtype;
339 for (i = 0; i < vec_size(fun->expression.params); ++i) {
340 if (!strcmp(fun->expression.params[i]->name, name))
341 return (ast_expression*)(fun->expression.params[i]);
346 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
351 hash = util_hthash(parser->htglobals, name);
354 for (i = vec_size(parser->variables); i > upto;) {
356 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
360 return parser_find_param(parser, name);
363 static ast_expression* parser_find_var(parser_t *parser, const char *name)
367 v = parser_find_local(parser, name, 0, &dummy);
368 if (!v) v = parser_find_global(parser, name);
372 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
376 hash = util_hthash(parser->typedefs[0], name);
378 for (i = vec_size(parser->typedefs); i > upto;) {
380 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
388 size_t etype; /* 0 = expression, others are operators */
392 ast_block *block; /* for commas and function calls */
401 #define SY_PAREN_EXPR '('
402 #define SY_PAREN_FUNC 'f'
403 #define SY_PAREN_INDEX '['
404 #define SY_PAREN_TERNARY '?'
406 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
417 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
421 e.out = (ast_expression*)v;
428 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
430 e.etype = 1 + (op - operators);
439 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
451 # define DEBUGSHUNTDO(x) x
453 # define DEBUGSHUNTDO(x)
456 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
457 * so we need to rotate it to become ent.(foo[n]).
459 static bool rotate_entfield_array_index_nodes(ast_expression **out)
461 ast_array_index *index;
462 ast_entfield *entfield;
466 ast_expression *entity;
468 lex_ctx ctx = ast_ctx(*out);
470 if (!ast_istype(*out, ast_array_index))
472 index = (ast_array_index*)*out;
474 if (!ast_istype(index->array, ast_entfield))
476 entfield = (ast_entfield*)index->array;
478 if (!ast_istype(entfield->field, ast_value))
480 field = (ast_value*)entfield->field;
483 entity = entfield->entity;
487 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
488 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
489 *out = (ast_expression*)entfield;
494 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
496 switch (v->expression.vtype) {
498 return !!v->constval.vfloat;
500 return !!v->constval.vint;
502 if (OPTS_FLAG(CORRECT_LOGIC))
503 return v->constval.vvec.x &&
504 v->constval.vvec.y &&
507 return !!(v->constval.vvec.x);
509 if (!v->constval.vstring)
511 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
513 return !!v->constval.vstring[0];
515 compile_error(ctx, "internal error: immediate_is_true on invalid type");
516 return !!v->constval.vfunc;
520 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
524 ast_expression *out = NULL;
525 ast_expression *exprs[3];
526 ast_block *blocks[3];
527 ast_value *asvalue[3];
528 ast_binstore *asbinstore;
529 size_t i, assignop, addop, subop;
530 qcint generated_op = 0;
535 if (!vec_size(sy->ops)) {
536 parseerror(parser, "internal error: missing operator");
540 if (vec_last(sy->ops).paren) {
541 parseerror(parser, "unmatched parenthesis");
545 op = &operators[vec_last(sy->ops).etype - 1];
546 ctx = vec_last(sy->ops).ctx;
548 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
550 if (vec_size(sy->out) < op->operands) {
551 compile_error(ctx, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
552 op->op, (int)op->id);
556 vec_shrinkby(sy->ops, 1);
558 /* op(:?) has no input and no output */
562 vec_shrinkby(sy->out, op->operands);
563 for (i = 0; i < op->operands; ++i) {
564 exprs[i] = sy->out[vec_size(sy->out)+i].out;
565 blocks[i] = sy->out[vec_size(sy->out)+i].block;
566 asvalue[i] = (ast_value*)exprs[i];
568 if (exprs[i]->expression.vtype == TYPE_NOEXPR &&
569 !(i != 0 && op->id == opid2('?',':')) &&
570 !(i == 1 && op->id == opid1('.')))
572 if (ast_istype(exprs[i], ast_label))
573 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
575 compile_error(ast_ctx(exprs[i]), "not an expression");
576 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
580 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
581 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
585 #define NotSameType(T) \
586 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
587 exprs[0]->expression.vtype != T)
588 #define CanConstFold1(A) \
589 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
590 (A)->expression.vtype != TYPE_FUNCTION)
591 #define CanConstFold(A, B) \
592 (CanConstFold1(A) && CanConstFold1(B))
593 #define ConstV(i) (asvalue[(i)]->constval.vvec)
594 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
595 #define ConstS(i) (asvalue[(i)]->constval.vstring)
599 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
603 if (exprs[0]->expression.vtype == TYPE_VECTOR &&
604 exprs[1]->expression.vtype == TYPE_NOEXPR)
606 if (exprs[1] == (ast_expression*)parser->const_vec[0])
607 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
608 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
609 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
610 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
611 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
613 compile_error(ctx, "access to invalid vector component");
617 else if (exprs[0]->expression.vtype == TYPE_ENTITY) {
618 if (exprs[1]->expression.vtype != TYPE_FIELD) {
619 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
622 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
624 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
625 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
629 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
635 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
636 !(exprs[0]->expression.vtype == TYPE_FIELD &&
637 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
639 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
640 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
643 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
644 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
645 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
648 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
649 if (rotate_entfield_array_index_nodes(&out))
652 /* This is not broken in fteqcc anymore */
653 if (opts.standard != COMPILER_GMQCC) {
654 /* this error doesn't need to make us bail out */
655 (void)!parsewarning(parser, WARN_EXTENSIONS,
656 "accessing array-field members of an entity without parenthesis\n"
657 " -> this is an extension from -std=gmqcc");
665 if (!ast_block_add_expr(blocks[0], exprs[1]))
668 blocks[0] = ast_block_new(ctx);
669 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
670 !ast_block_add_expr(blocks[0], exprs[1]))
675 if (!ast_block_set_type(blocks[0], exprs[1]))
678 vec_push(sy->out, syblock(ctx, blocks[0]));
685 switch (exprs[0]->expression.vtype) {
687 if (CanConstFold1(exprs[0]))
688 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
690 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
691 (ast_expression*)parser_const_float_0(parser),
695 if (CanConstFold1(exprs[0]))
696 out = (ast_expression*)parser_const_vector_f(parser,
697 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
699 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
700 (ast_expression*)parser_const_vector_0(parser),
704 compile_error(ctx, "invalid types used in expression: cannot negate type %s",
705 type_name[exprs[0]->expression.vtype]);
711 switch (exprs[0]->expression.vtype) {
713 if (CanConstFold1(exprs[0]))
714 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
716 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
719 if (CanConstFold1(exprs[0]))
720 out = (ast_expression*)parser_const_float(parser,
721 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
723 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
726 if (CanConstFold1(exprs[0])) {
727 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
728 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
730 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
732 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
733 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
735 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
738 /* we don't constant-fold NOT for these types */
740 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
743 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
746 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
747 type_name[exprs[0]->expression.vtype]);
753 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
754 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
756 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
757 type_name[exprs[0]->expression.vtype],
758 type_name[exprs[1]->expression.vtype]);
761 switch (exprs[0]->expression.vtype) {
763 if (CanConstFold(exprs[0], exprs[1]))
765 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
768 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
771 if (CanConstFold(exprs[0], exprs[1]))
772 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
774 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
777 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
778 type_name[exprs[0]->expression.vtype],
779 type_name[exprs[1]->expression.vtype]);
784 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
785 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
787 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
788 type_name[exprs[1]->expression.vtype],
789 type_name[exprs[0]->expression.vtype]);
792 switch (exprs[0]->expression.vtype) {
794 if (CanConstFold(exprs[0], exprs[1]))
795 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
797 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
800 if (CanConstFold(exprs[0], exprs[1]))
801 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
803 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
806 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
807 type_name[exprs[1]->expression.vtype],
808 type_name[exprs[0]->expression.vtype]);
813 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
814 !(exprs[0]->expression.vtype == TYPE_VECTOR &&
815 exprs[1]->expression.vtype == TYPE_FLOAT) &&
816 !(exprs[1]->expression.vtype == TYPE_VECTOR &&
817 exprs[0]->expression.vtype == TYPE_FLOAT)
820 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
821 type_name[exprs[1]->expression.vtype],
822 type_name[exprs[0]->expression.vtype]);
825 switch (exprs[0]->expression.vtype) {
827 if (exprs[1]->expression.vtype == TYPE_VECTOR)
829 if (CanConstFold(exprs[0], exprs[1]))
830 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
832 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
836 if (CanConstFold(exprs[0], exprs[1]))
837 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
839 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
843 if (exprs[1]->expression.vtype == TYPE_FLOAT)
845 if (CanConstFold(exprs[0], exprs[1]))
846 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
848 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
852 if (CanConstFold(exprs[0], exprs[1]))
853 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
854 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[0])) {
855 vector vec = ConstV(0);
856 if (!vec.y && !vec.z) { /* 'n 0 0' * v */
857 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
858 out = (ast_expression*)ast_member_new(ctx, exprs[1], 0, NULL);
859 out->expression.node.keep = false;
860 ((ast_member*)out)->rvalue = true;
862 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.x), out);
864 else if (!vec.x && !vec.z) { /* '0 n 0' * v */
865 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
866 out = (ast_expression*)ast_member_new(ctx, exprs[1], 1, NULL);
867 out->expression.node.keep = false;
868 ((ast_member*)out)->rvalue = true;
870 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.y), out);
872 else if (!vec.x && !vec.y) { /* '0 n 0' * v */
873 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
874 out = (ast_expression*)ast_member_new(ctx, exprs[1], 2, NULL);
875 out->expression.node.keep = false;
876 ((ast_member*)out)->rvalue = true;
878 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.z), out);
881 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
883 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[1])) {
884 vector vec = ConstV(1);
885 if (!vec.y && !vec.z) { /* v * 'n 0 0' */
886 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
887 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
888 out->expression.node.keep = false;
889 ((ast_member*)out)->rvalue = true;
891 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.x));
893 else if (!vec.x && !vec.z) { /* v * '0 n 0' */
894 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
895 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
896 out->expression.node.keep = false;
897 ((ast_member*)out)->rvalue = true;
899 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.y));
901 else if (!vec.x && !vec.y) { /* v * '0 n 0' */
902 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
903 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
904 out->expression.node.keep = false;
905 ((ast_member*)out)->rvalue = true;
907 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.z));
910 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
913 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
917 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
918 type_name[exprs[1]->expression.vtype],
919 type_name[exprs[0]->expression.vtype]);
924 if (NotSameType(TYPE_FLOAT)) {
925 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s",
926 type_name[exprs[0]->expression.vtype],
927 type_name[exprs[1]->expression.vtype]);
930 if (CanConstFold(exprs[0], exprs[1]))
931 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
933 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
937 compile_error(ctx, "qc does not have a modulo operator");
941 if (NotSameType(TYPE_FLOAT)) {
942 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
943 type_name[exprs[0]->expression.vtype],
944 type_name[exprs[1]->expression.vtype]);
947 if (CanConstFold(exprs[0], exprs[1]))
948 out = (ast_expression*)parser_const_float(parser,
949 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
950 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
952 out = (ast_expression*)ast_binary_new(ctx,
953 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
957 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor via ^");
962 if (CanConstFold(exprs[0], exprs[1]) && ! NotSameType(TYPE_FLOAT)) {
963 if (op->id == opid2('<','<'))
964 out = (ast_expression*)parser_const_float(parser, (double)((int)(ConstF(0)) << (int)(ConstF(1))));
966 out = (ast_expression*)parser_const_float(parser, (double)((int)(ConstF(0)) >> (int)(ConstF(1))));
969 case opid3('<','<','='):
970 case opid3('>','>','='):
971 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
975 generated_op += 1; /* INSTR_OR */
977 generated_op += INSTR_AND;
978 if (CanConstFold(exprs[0], exprs[1]))
980 if (OPTS_FLAG(PERL_LOGIC)) {
981 if (immediate_is_true(ctx, asvalue[0]))
985 out = (ast_expression*)parser_const_float(parser,
986 ( (generated_op == INSTR_OR)
987 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
988 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
993 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
994 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
995 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
996 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
999 for (i = 0; i < 2; ++i) {
1000 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->expression.vtype == TYPE_VECTOR) {
1001 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
1003 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1005 exprs[i] = out; out = NULL;
1006 if (OPTS_FLAG(PERL_LOGIC)) {
1007 /* here we want to keep the right expressions' type */
1011 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->expression.vtype == TYPE_STRING) {
1012 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
1014 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1016 exprs[i] = out; out = NULL;
1017 if (OPTS_FLAG(PERL_LOGIC)) {
1018 /* here we want to keep the right expressions' type */
1023 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1027 case opid2('?',':'):
1028 if (vec_last(parser->pot) != POT_TERNARY2) {
1029 compile_error(ctx, "mismatched parenthesis/ternary");
1032 vec_pop(parser->pot);
1033 if (!ast_compare_type(exprs[1], exprs[2])) {
1034 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
1035 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
1036 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
1039 if (CanConstFold1(exprs[0]))
1040 out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
1042 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
1046 generated_op += 1; /* INSTR_GT */
1048 generated_op += 1; /* INSTR_LT */
1049 case opid2('>', '='):
1050 generated_op += 1; /* INSTR_GE */
1051 case opid2('<', '='):
1052 generated_op += INSTR_LE;
1053 if (NotSameType(TYPE_FLOAT)) {
1054 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1055 type_name[exprs[0]->expression.vtype],
1056 type_name[exprs[1]->expression.vtype]);
1059 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1061 case opid2('!', '='):
1062 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1063 compile_error(ctx, "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, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1070 case opid2('=', '='):
1071 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1072 compile_error(ctx, "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_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1081 if (ast_istype(exprs[0], ast_entfield)) {
1082 ast_expression *field = ((ast_entfield*)exprs[0])->field;
1083 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1084 exprs[0]->expression.vtype == TYPE_FIELD &&
1085 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1087 assignop = type_storep_instr[TYPE_VECTOR];
1090 assignop = type_storep_instr[exprs[0]->expression.vtype];
1091 if (assignop == AINSTR_END || !ast_compare_type(field->expression.next, exprs[1]))
1093 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
1094 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1095 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1096 field->expression.next->expression.vtype == TYPE_FUNCTION &&
1097 exprs[1]->expression.vtype == TYPE_FUNCTION)
1099 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1100 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1103 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1108 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1109 exprs[0]->expression.vtype == TYPE_FIELD &&
1110 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1112 assignop = type_store_instr[TYPE_VECTOR];
1115 assignop = type_store_instr[exprs[0]->expression.vtype];
1118 if (assignop == AINSTR_END) {
1119 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1120 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1121 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1123 else if (!ast_compare_type(exprs[0], exprs[1]))
1125 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1126 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1127 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1128 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1129 exprs[1]->expression.vtype == TYPE_FUNCTION)
1131 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1132 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1135 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1138 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1139 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1141 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1143 case opid3('+','+','P'):
1144 case opid3('-','-','P'):
1146 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1147 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1148 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
1151 if (op->id == opid3('+','+','P'))
1152 addop = INSTR_ADD_F;
1154 addop = INSTR_SUB_F;
1155 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1156 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1158 if (ast_istype(exprs[0], ast_entfield)) {
1159 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1161 (ast_expression*)parser_const_float_1(parser));
1163 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1165 (ast_expression*)parser_const_float_1(parser));
1168 case opid3('S','+','+'):
1169 case opid3('S','-','-'):
1171 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1172 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1173 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
1176 if (op->id == opid3('S','+','+')) {
1177 addop = INSTR_ADD_F;
1178 subop = INSTR_SUB_F;
1180 addop = INSTR_SUB_F;
1181 subop = INSTR_ADD_F;
1183 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1184 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1186 if (ast_istype(exprs[0], ast_entfield)) {
1187 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1189 (ast_expression*)parser_const_float_1(parser));
1191 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1193 (ast_expression*)parser_const_float_1(parser));
1197 out = (ast_expression*)ast_binary_new(ctx, subop,
1199 (ast_expression*)parser_const_float_1(parser));
1201 case opid2('+','='):
1202 case opid2('-','='):
1203 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1204 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1206 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1207 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1208 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1212 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1213 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1215 if (ast_istype(exprs[0], ast_entfield))
1216 assignop = type_storep_instr[exprs[0]->expression.vtype];
1218 assignop = type_store_instr[exprs[0]->expression.vtype];
1219 switch (exprs[0]->expression.vtype) {
1221 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1222 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1223 exprs[0], exprs[1]);
1226 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1227 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1228 exprs[0], exprs[1]);
1231 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1232 type_name[exprs[0]->expression.vtype],
1233 type_name[exprs[1]->expression.vtype]);
1237 case opid2('*','='):
1238 case opid2('/','='):
1239 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1240 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1241 exprs[0]->expression.vtype == TYPE_VECTOR))
1243 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1244 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1245 compile_error(ctx, "invalid types used in expression: %s and %s",
1249 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1250 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1252 if (ast_istype(exprs[0], ast_entfield))
1253 assignop = type_storep_instr[exprs[0]->expression.vtype];
1255 assignop = type_store_instr[exprs[0]->expression.vtype];
1256 switch (exprs[0]->expression.vtype) {
1258 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1259 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1260 exprs[0], exprs[1]);
1263 if (op->id == opid2('*','=')) {
1264 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1265 exprs[0], exprs[1]);
1267 /* there's no DIV_VF */
1268 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1269 (ast_expression*)parser_const_float_1(parser),
1273 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1278 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1279 type_name[exprs[0]->expression.vtype],
1280 type_name[exprs[1]->expression.vtype]);
1284 case opid2('&','='):
1285 case opid2('|','='):
1286 if (NotSameType(TYPE_FLOAT)) {
1287 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1288 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1289 compile_error(ctx, "invalid types used in expression: %s and %s",
1293 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1294 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1296 if (ast_istype(exprs[0], ast_entfield))
1297 assignop = type_storep_instr[exprs[0]->expression.vtype];
1299 assignop = type_store_instr[exprs[0]->expression.vtype];
1300 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1301 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1302 exprs[0], exprs[1]);
1304 case opid3('&','~','='):
1305 /* This is like: a &= ~(b);
1306 * But QC has no bitwise-not, so we implement it as
1309 if (NotSameType(TYPE_FLOAT)) {
1310 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1311 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1312 compile_error(ctx, "invalid types used in expression: %s and %s",
1316 if (ast_istype(exprs[0], ast_entfield))
1317 assignop = type_storep_instr[exprs[0]->expression.vtype];
1319 assignop = type_store_instr[exprs[0]->expression.vtype];
1320 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1323 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1324 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1326 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1327 asbinstore->keep_dest = true;
1328 out = (ast_expression*)asbinstore;
1334 compile_error(ctx, "failed to apply operand %s", op->op);
1338 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1339 vec_push(sy->out, syexp(ctx, out));
1343 static bool parser_close_call(parser_t *parser, shunt *sy)
1345 /* was a function call */
1346 ast_expression *fun;
1347 ast_value *funval = NULL;
1353 vec_shrinkby(sy->ops, 1);
1354 fid = sy->ops[vec_size(sy->ops)].off;
1356 /* out[fid] is the function
1357 * everything above is parameters...
1358 * 0 params = nothing
1359 * 1 params = ast_expression
1363 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1364 parseerror(parser, "internal error: function call needs function and parameter list...");
1368 fun = sy->out[fid].out;
1370 if (fun == intrinsic_debug_typestring) {
1372 if (fid+2 != vec_size(sy->out) ||
1373 vec_last(sy->out).block)
1375 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1378 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1379 ast_unref(vec_last(sy->out).out);
1380 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1381 (ast_expression*)parser_const_string(parser, ty, false));
1382 vec_shrinkby(sy->out, 1);
1386 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1388 parseerror(parser, "internal error: failed to create ast_call node");
1392 if (fid+1 == vec_size(sy->out)) {
1395 } else if (fid+2 == vec_size(sy->out)) {
1397 vec_shrinkby(sy->out, 1);
1398 params = sy->out[vec_size(sy->out)].block;
1402 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1404 paramcount = vec_size(params->exprs);
1405 call->params = params->exprs;
1406 params->exprs = NULL;
1409 if (parser->max_param_count < paramcount)
1410 parser->max_param_count = paramcount;
1411 (void)!ast_call_check_types(call);
1413 parseerror(parser, "invalid function call");
1417 if (ast_istype(fun, ast_value)) {
1418 funval = (ast_value*)fun;
1419 if ((fun->expression.flags & AST_FLAG_VARIADIC) &&
1420 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1423 if (paramcount < vec_size(fun->expression.params))
1426 va_count = paramcount - vec_size(fun->expression.params);
1427 call->va_count = (ast_expression*)parser_const_float(parser, (double)va_count);
1431 /* overwrite fid, the function, with a call */
1432 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1434 if (fun->expression.vtype != TYPE_FUNCTION) {
1435 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1439 if (!fun->expression.next) {
1440 parseerror(parser, "could not determine function return type");
1443 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1445 if (fun->expression.flags & AST_FLAG_DEPRECATED) {
1447 return !parsewarning(parser, WARN_DEPRECATED,
1448 "call to function (which is marked deprecated)\n",
1449 "-> it has been declared here: %s:%i",
1450 ast_ctx(fun).file, ast_ctx(fun).line);
1453 return !parsewarning(parser, WARN_DEPRECATED,
1454 "call to `%s` (which is marked deprecated)\n"
1455 "-> `%s` declared here: %s:%i",
1456 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1458 return !parsewarning(parser, WARN_DEPRECATED,
1459 "call to `%s` (deprecated: %s)\n"
1460 "-> `%s` declared here: %s:%i",
1461 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1465 if (vec_size(fun->expression.params) != paramcount &&
1466 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1467 vec_size(fun->expression.params) < paramcount))
1469 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1471 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1472 "too %s parameters for call to %s: expected %i, got %i\n"
1473 " -> `%s` has been declared here: %s:%i",
1474 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1475 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1477 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1478 "too %s parameters for function call: expected %i, got %i\n"
1479 " -> it has been declared here: %s:%i",
1480 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1481 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1488 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1490 if (!vec_size(sy->ops)) {
1491 parseerror(parser, "unmatched closing paren");
1494 /* this would for bit a + (x) because there are no operators inside (x)
1495 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1496 parseerror(parser, "empty parenthesis expression");
1500 while (vec_size(sy->ops)) {
1501 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1502 if (!parser_close_call(parser, sy))
1506 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1507 vec_shrinkby(sy->ops, 1);
1508 return !functions_only;
1510 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1513 /* pop off the parenthesis */
1514 vec_shrinkby(sy->ops, 1);
1515 /* then apply the index operator */
1516 if (!parser_sy_apply_operator(parser, sy))
1520 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1523 if (vec_last(parser->pot) != POT_TERNARY1) {
1524 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1527 vec_last(parser->pot) = POT_TERNARY2;
1528 /* pop off the parenthesis */
1529 vec_shrinkby(sy->ops, 1);
1532 if (!parser_sy_apply_operator(parser, sy))
1538 static void parser_reclassify_token(parser_t *parser)
1541 for (i = 0; i < operator_count; ++i) {
1542 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1543 parser->tok = TOKEN_OPERATOR;
1549 static ast_expression* parse_vararg_do(parser_t *parser)
1551 ast_expression *idx, *out;
1553 ast_value *funtype = parser->function->vtype;
1555 lex_ctx ctx = parser_ctx(parser);
1557 if (!parser_next(parser) || parser->tok != '(') {
1558 parseerror(parser, "expected parameter index and type in parenthesis");
1561 if (!parser_next(parser)) {
1562 parseerror(parser, "error parsing parameter index");
1566 idx = parse_expression_leave(parser, true, false, false);
1570 if (parser->tok != ',') {
1572 parseerror(parser, "expected comma after parameter index");
1576 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1578 parseerror(parser, "expected typename for vararg");
1582 typevar = parse_typename(parser, NULL, NULL);
1588 if (parser->tok != ')') {
1590 ast_delete(typevar);
1591 parseerror(parser, "expected closing paren");
1596 if (!parser_next(parser)) {
1598 ast_delete(typevar);
1599 parseerror(parser, "parse error after vararg");
1604 if (!parser->function->varargs) {
1606 ast_delete(typevar);
1607 parseerror(parser, "function has no variable argument list");
1611 if (funtype->expression.varparam &&
1612 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1616 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1617 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1618 compile_error(ast_ctx(typevar),
1619 "function was declared to take varargs of type `%s`, requested type is: %s",
1623 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1624 ast_type_adopt(out, typevar);
1625 ast_delete(typevar);
1629 static ast_expression* parse_vararg(parser_t *parser)
1631 bool old_noops = parser->lex->flags.noops;
1632 enum parser_pot *old_pot = parser->pot;
1634 ast_expression *out;
1637 parser->lex->flags.noops = true;
1638 out = parse_vararg_do(parser);
1640 parser->pot = old_pot;
1641 parser->lex->flags.noops = old_noops;
1645 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1647 ast_expression *expr = NULL;
1649 bool wantop = false;
1650 /* only warn once about an assignment in a truth value because the current code
1651 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1653 bool warn_truthvalue = true;
1655 /* count the parens because an if starts with one, so the
1656 * end of a condition is an unmatched closing paren
1664 parser->lex->flags.noops = false;
1666 parser_reclassify_token(parser);
1670 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1671 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1673 /* a translatable string */
1677 parseerror(parser, "expected operator or end of statement, got constant");
1681 parser->lex->flags.noops = true;
1682 if (!parser_next(parser) || parser->tok != '(') {
1683 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1686 parser->lex->flags.noops = false;
1687 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1688 parseerror(parser, "expected a constant string in translatable-string extension");
1691 val = parser_const_string(parser, parser_tokval(parser), true);
1695 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1696 DEBUGSHUNTDO(con_out("push string\n"));
1698 if (!parser_next(parser) || parser->tok != ')') {
1699 parseerror(parser, "expected closing paren after translatable string");
1703 else if (parser->tok == TOKEN_DOTS)
1706 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1707 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1711 parseerror(parser, "expected operator or end of statement");
1715 va = parse_vararg(parser);
1718 vec_push(sy.out, syexp(parser_ctx(parser), va));
1719 DEBUGSHUNTDO(con_out("push `...`\n"));
1721 else if (parser->tok == TOKEN_IDENT)
1723 const char *ctoken = parser_tokval(parser);
1724 ast_expression *prev = vec_size(sy.out) ? vec_last(sy.out).out : NULL;
1725 ast_expression *var;
1727 parseerror(parser, "expected operator or end of statement");
1731 /* a_vector.{x,y,z} */
1732 if (!vec_size(sy.ops) ||
1733 !vec_last(sy.ops).etype ||
1734 operators[vec_last(sy.ops).etype-1].id != opid1('.') ||
1735 (prev >= intrinsic_debug_typestring &&
1736 prev <= intrinsic_debug_typestring))
1738 /* When adding more intrinsics, fix the above condition */
1741 if (prev && prev->expression.vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1743 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1745 var = parser_find_var(parser, parser_tokval(parser));
1747 var = parser_find_field(parser, parser_tokval(parser));
1749 if (!var && with_labels) {
1750 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1752 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1753 var = (ast_expression*)lbl;
1754 vec_push(parser->labels, lbl);
1759 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1760 var = (ast_expression*)intrinsic_debug_typestring;
1765 char *correct = NULL;
1768 * sometimes people use preprocessing predefs without enabling them
1769 * i've done this thousands of times already myself. Lets check for
1770 * it in the predef table. And diagnose it better :)
1772 if (!OPTS_FLAG(FTEPP_PREDEFS)) {
1773 for (i = 0; i < sizeof(ftepp_predefs)/sizeof(*ftepp_predefs); i++) {
1774 if (!strcmp(ftepp_predefs[i].name, parser_tokval(parser))) {
1775 parseerror(parser, "unexpected ident: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1782 * TODO: determine the best score for the identifier: be it
1783 * a variable, a field.
1785 * We should also consider adding correction tables for
1786 * other things as well.
1788 if (opts.correction) {
1790 correct_init(&corr);
1792 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1793 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1794 if (strcmp(correct, parser_tokval(parser))) {
1796 } else if (correct) {
1801 correct_free(&corr);
1804 parseerror(parser, "unexpected ident: %s (did you mean %s?)", parser_tokval(parser), correct);
1809 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1815 if (ast_istype(var, ast_value)) {
1816 ((ast_value*)var)->uses++;
1818 else if (ast_istype(var, ast_member)) {
1819 ast_member *mem = (ast_member*)var;
1820 if (ast_istype(mem->owner, ast_value))
1821 ((ast_value*)(mem->owner))->uses++;
1824 vec_push(sy.out, syexp(parser_ctx(parser), var));
1825 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1827 else if (parser->tok == TOKEN_FLOATCONST) {
1830 parseerror(parser, "expected operator or end of statement, got constant");
1834 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1837 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1838 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1840 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1843 parseerror(parser, "expected operator or end of statement, got constant");
1847 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1850 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1851 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1853 else if (parser->tok == TOKEN_STRINGCONST) {
1856 parseerror(parser, "expected operator or end of statement, got constant");
1860 val = parser_const_string(parser, parser_tokval(parser), false);
1863 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1864 DEBUGSHUNTDO(con_out("push string\n"));
1866 else if (parser->tok == TOKEN_VECTORCONST) {
1869 parseerror(parser, "expected operator or end of statement, got constant");
1873 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1876 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1877 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1878 parser_token(parser)->constval.v.x,
1879 parser_token(parser)->constval.v.y,
1880 parser_token(parser)->constval.v.z));
1882 else if (parser->tok == '(') {
1883 parseerror(parser, "internal error: '(' should be classified as operator");
1886 else if (parser->tok == '[') {
1887 parseerror(parser, "internal error: '[' should be classified as operator");
1890 else if (parser->tok == ')') {
1892 DEBUGSHUNTDO(con_out("do[op] )\n"));
1896 /* we do expect an operator next */
1897 /* closing an opening paren */
1898 if (!parser_close_paren(parser, &sy, false))
1900 if (vec_last(parser->pot) != POT_PAREN) {
1901 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1904 vec_pop(parser->pot);
1906 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1910 /* allowed for function calls */
1911 if (!parser_close_paren(parser, &sy, true))
1913 if (vec_last(parser->pot) != POT_PAREN) {
1914 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1917 vec_pop(parser->pot);
1921 else if (parser->tok == ']') {
1923 parseerror(parser, "operand expected");
1927 if (!parser_close_paren(parser, &sy, false))
1929 if (vec_last(parser->pot) != POT_PAREN) {
1930 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1933 vec_pop(parser->pot);
1936 else if (parser->tok == TOKEN_TYPENAME) {
1937 parseerror(parser, "unexpected typename");
1940 else if (parser->tok != TOKEN_OPERATOR) {
1942 parseerror(parser, "expected operator or end of statement");
1949 /* classify the operator */
1950 const oper_info *op;
1951 const oper_info *olast = NULL;
1953 for (o = 0; o < operator_count; ++o) {
1954 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1955 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1956 !strcmp(parser_tokval(parser), operators[o].op))
1961 if (o == operator_count) {
1962 /* no operator found... must be the end of the statement */
1965 /* found an operator */
1968 /* when declaring variables, a comma starts a new variable */
1969 if (op->id == opid1(',') && !parens && stopatcomma) {
1970 /* fixup the token */
1975 /* a colon without a pervious question mark cannot be a ternary */
1976 if (!ternaries && op->id == opid2(':','?')) {
1981 if (op->id == opid1(',')) {
1982 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1983 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1987 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1988 olast = &operators[vec_last(sy.ops).etype-1];
1990 #define IsAssignOp(x) (\
1991 (x) == opid1('=') || \
1992 (x) == opid2('+','=') || \
1993 (x) == opid2('-','=') || \
1994 (x) == opid2('*','=') || \
1995 (x) == opid2('/','=') || \
1996 (x) == opid2('%','=') || \
1997 (x) == opid2('&','=') || \
1998 (x) == opid2('|','=') || \
1999 (x) == opid3('&','~','=') \
2001 if (warn_truthvalue) {
2002 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
2003 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
2004 (truthvalue && !vec_size(parser->pot) && IsAssignOp(op->id))
2007 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
2008 warn_truthvalue = false;
2013 (op->prec < olast->prec) ||
2014 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
2016 if (!parser_sy_apply_operator(parser, &sy))
2018 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
2019 olast = &operators[vec_last(sy.ops).etype-1];
2024 if (op->id == opid1('(')) {
2026 size_t sycount = vec_size(sy.out);
2027 DEBUGSHUNTDO(con_out("push [op] (\n"));
2028 ++parens; vec_push(parser->pot, POT_PAREN);
2029 /* we expected an operator, this is the function-call operator */
2030 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
2032 ++parens; vec_push(parser->pot, POT_PAREN);
2033 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
2034 DEBUGSHUNTDO(con_out("push [nop] (\n"));
2037 } else if (op->id == opid1('[')) {
2039 parseerror(parser, "unexpected array subscript");
2042 ++parens; vec_push(parser->pot, POT_PAREN);
2043 /* push both the operator and the paren, this makes life easier */
2044 vec_push(sy.ops, syop(parser_ctx(parser), op));
2045 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
2047 } else if (op->id == opid2('?',':')) {
2048 vec_push(sy.ops, syop(parser_ctx(parser), op));
2049 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
2052 vec_push(parser->pot, POT_TERNARY1);
2053 } else if (op->id == opid2(':','?')) {
2054 if (!vec_size(parser->pot)) {
2055 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2058 if (vec_last(parser->pot) != POT_TERNARY1) {
2059 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2062 if (!parser_close_paren(parser, &sy, false))
2064 vec_push(sy.ops, syop(parser_ctx(parser), op));
2068 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
2069 vec_push(sy.ops, syop(parser_ctx(parser), op));
2070 wantop = !!(op->flags & OP_SUFFIX);
2073 if (!parser_next(parser)) {
2076 if (parser->tok == ';' ||
2077 (!parens && (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
2083 while (vec_size(sy.ops)) {
2084 if (!parser_sy_apply_operator(parser, &sy))
2088 parser->lex->flags.noops = true;
2089 if (!vec_size(sy.out)) {
2090 parseerror(parser, "empty expression");
2093 expr = sy.out[0].out;
2096 DEBUGSHUNTDO(con_out("shunt done\n"));
2097 if (vec_size(parser->pot)) {
2098 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
2101 vec_free(parser->pot);
2105 parser->lex->flags.noops = true;
2111 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
2113 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
2116 if (parser->tok != ';') {
2117 parseerror(parser, "semicolon expected after expression");
2121 if (!parser_next(parser)) {
2128 static void parser_enterblock(parser_t *parser)
2130 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2131 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2132 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2133 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2134 vec_push(parser->_block_ctx, parser_ctx(parser));
2137 vec_push(parser->correct_variables, correct_trie_new());
2138 vec_push(parser->correct_variables_score, NULL);
2141 static bool parser_leaveblock(parser_t *parser)
2144 size_t locals, typedefs;
2146 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2147 parseerror(parser, "internal error: parser_leaveblock with no block");
2151 util_htdel(vec_last(parser->variables));
2152 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2154 vec_pop(parser->variables);
2155 vec_pop(parser->correct_variables);
2156 vec_pop(parser->correct_variables_score);
2157 if (!vec_size(parser->_blocklocals)) {
2158 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2162 locals = vec_last(parser->_blocklocals);
2163 vec_pop(parser->_blocklocals);
2164 while (vec_size(parser->_locals) != locals) {
2165 ast_expression *e = vec_last(parser->_locals);
2166 ast_value *v = (ast_value*)e;
2167 vec_pop(parser->_locals);
2168 if (ast_istype(e, ast_value) && !v->uses) {
2169 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2174 typedefs = vec_last(parser->_blocktypedefs);
2175 while (vec_size(parser->_typedefs) != typedefs) {
2176 ast_delete(vec_last(parser->_typedefs));
2177 vec_pop(parser->_typedefs);
2179 util_htdel(vec_last(parser->typedefs));
2180 vec_pop(parser->typedefs);
2182 vec_pop(parser->_block_ctx);
2187 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2189 vec_push(parser->_locals, e);
2190 util_htset(vec_last(parser->variables), name, (void*)e);
2194 vec_last(parser->correct_variables),
2195 &vec_last(parser->correct_variables_score),
2200 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2202 vec_push(parser->globals, e);
2203 util_htset(parser->htglobals, name, e);
2207 parser->correct_variables[0],
2208 &parser->correct_variables_score[0],
2213 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2217 ast_expression *prev;
2219 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
2222 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2225 parseerror(parser, "internal error: failed to process condition");
2230 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
2232 /* vector types need to be cast to true booleans */
2233 ast_binary *bin = (ast_binary*)cond;
2234 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2236 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2238 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2241 parseerror(parser, "internal error: failed to process condition");
2248 unary = (ast_unary*)cond;
2249 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2251 cond = unary->operand;
2252 unary->operand = NULL;
2255 unary = (ast_unary*)cond;
2259 parseerror(parser, "internal error: failed to process condition");
2261 if (ifnot) *_ifnot = !*_ifnot;
2265 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2268 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2271 lex_ctx ctx = parser_ctx(parser);
2273 (void)block; /* not touching */
2275 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2276 if (!parser_next(parser)) {
2277 parseerror(parser, "expected condition or 'not'");
2280 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2282 if (!parser_next(parser)) {
2283 parseerror(parser, "expected condition in parenthesis");
2287 if (parser->tok != '(') {
2288 parseerror(parser, "expected 'if' condition in parenthesis");
2291 /* parse into the expression */
2292 if (!parser_next(parser)) {
2293 parseerror(parser, "expected 'if' condition after opening paren");
2296 /* parse the condition */
2297 cond = parse_expression_leave(parser, false, true, false);
2301 if (parser->tok != ')') {
2302 parseerror(parser, "expected closing paren after 'if' condition");
2306 /* parse into the 'then' branch */
2307 if (!parser_next(parser)) {
2308 parseerror(parser, "expected statement for on-true branch of 'if'");
2312 if (!parse_statement_or_block(parser, &ontrue)) {
2317 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2318 /* check for an else */
2319 if (!strcmp(parser_tokval(parser), "else")) {
2320 /* parse into the 'else' branch */
2321 if (!parser_next(parser)) {
2322 parseerror(parser, "expected on-false branch after 'else'");
2327 if (!parse_statement_or_block(parser, &onfalse)) {
2334 cond = process_condition(parser, cond, &ifnot);
2336 if (ontrue) ast_delete(ontrue);
2337 if (onfalse) ast_delete(onfalse);
2342 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2344 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2345 *out = (ast_expression*)ifthen;
2349 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2350 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2355 /* skip the 'while' and get the body */
2356 if (!parser_next(parser)) {
2357 if (OPTS_FLAG(LOOP_LABELS))
2358 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2360 parseerror(parser, "expected 'while' condition in parenthesis");
2364 if (parser->tok == ':') {
2365 if (!OPTS_FLAG(LOOP_LABELS))
2366 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2367 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2368 parseerror(parser, "expected loop label");
2371 label = util_strdup(parser_tokval(parser));
2372 if (!parser_next(parser)) {
2374 parseerror(parser, "expected 'while' condition in parenthesis");
2379 if (parser->tok != '(') {
2380 parseerror(parser, "expected 'while' condition in parenthesis");
2384 vec_push(parser->breaks, label);
2385 vec_push(parser->continues, label);
2387 rv = parse_while_go(parser, block, out);
2390 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2391 parseerror(parser, "internal error: label stack corrupted");
2397 vec_pop(parser->breaks);
2398 vec_pop(parser->continues);
2403 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2406 ast_expression *cond, *ontrue;
2410 lex_ctx ctx = parser_ctx(parser);
2412 (void)block; /* not touching */
2414 /* parse into the expression */
2415 if (!parser_next(parser)) {
2416 parseerror(parser, "expected 'while' condition after opening paren");
2419 /* parse the condition */
2420 cond = parse_expression_leave(parser, false, true, false);
2424 if (parser->tok != ')') {
2425 parseerror(parser, "expected closing paren after 'while' condition");
2429 /* parse into the 'then' branch */
2430 if (!parser_next(parser)) {
2431 parseerror(parser, "expected while-loop body");
2435 if (!parse_statement_or_block(parser, &ontrue)) {
2440 cond = process_condition(parser, cond, &ifnot);
2445 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2446 *out = (ast_expression*)aloop;
2450 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2451 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2456 /* skip the 'do' and get the body */
2457 if (!parser_next(parser)) {
2458 if (OPTS_FLAG(LOOP_LABELS))
2459 parseerror(parser, "expected loop label or body");
2461 parseerror(parser, "expected loop body");
2465 if (parser->tok == ':') {
2466 if (!OPTS_FLAG(LOOP_LABELS))
2467 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2468 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2469 parseerror(parser, "expected loop label");
2472 label = util_strdup(parser_tokval(parser));
2473 if (!parser_next(parser)) {
2475 parseerror(parser, "expected loop body");
2480 vec_push(parser->breaks, label);
2481 vec_push(parser->continues, label);
2483 rv = parse_dowhile_go(parser, block, out);
2486 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2487 parseerror(parser, "internal error: label stack corrupted");
2493 vec_pop(parser->breaks);
2494 vec_pop(parser->continues);
2499 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2502 ast_expression *cond, *ontrue;
2506 lex_ctx ctx = parser_ctx(parser);
2508 (void)block; /* not touching */
2510 if (!parse_statement_or_block(parser, &ontrue))
2513 /* expect the "while" */
2514 if (parser->tok != TOKEN_KEYWORD ||
2515 strcmp(parser_tokval(parser), "while"))
2517 parseerror(parser, "expected 'while' and condition");
2522 /* skip the 'while' and check for opening paren */
2523 if (!parser_next(parser) || parser->tok != '(') {
2524 parseerror(parser, "expected 'while' condition in parenthesis");
2528 /* parse into the expression */
2529 if (!parser_next(parser)) {
2530 parseerror(parser, "expected 'while' condition after opening paren");
2534 /* parse the condition */
2535 cond = parse_expression_leave(parser, false, true, false);
2539 if (parser->tok != ')') {
2540 parseerror(parser, "expected closing paren after 'while' condition");
2546 if (!parser_next(parser) || parser->tok != ';') {
2547 parseerror(parser, "expected semicolon after condition");
2553 if (!parser_next(parser)) {
2554 parseerror(parser, "parse error");
2560 cond = process_condition(parser, cond, &ifnot);
2565 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2566 *out = (ast_expression*)aloop;
2570 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2571 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2576 /* skip the 'for' and check for opening paren */
2577 if (!parser_next(parser)) {
2578 if (OPTS_FLAG(LOOP_LABELS))
2579 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2581 parseerror(parser, "expected 'for' expressions in parenthesis");
2585 if (parser->tok == ':') {
2586 if (!OPTS_FLAG(LOOP_LABELS))
2587 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2588 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2589 parseerror(parser, "expected loop label");
2592 label = util_strdup(parser_tokval(parser));
2593 if (!parser_next(parser)) {
2595 parseerror(parser, "expected 'for' expressions in parenthesis");
2600 if (parser->tok != '(') {
2601 parseerror(parser, "expected 'for' expressions in parenthesis");
2605 vec_push(parser->breaks, label);
2606 vec_push(parser->continues, label);
2608 rv = parse_for_go(parser, block, out);
2611 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2612 parseerror(parser, "internal error: label stack corrupted");
2618 vec_pop(parser->breaks);
2619 vec_pop(parser->continues);
2623 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2626 ast_expression *initexpr, *cond, *increment, *ontrue;
2632 lex_ctx ctx = parser_ctx(parser);
2634 parser_enterblock(parser);
2641 /* parse into the expression */
2642 if (!parser_next(parser)) {
2643 parseerror(parser, "expected 'for' initializer after opening paren");
2648 if (parser->tok == TOKEN_IDENT)
2649 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2651 if (typevar || parser->tok == TOKEN_TYPENAME) {
2653 if (opts.standard != COMPILER_GMQCC) {
2654 if (parsewarning(parser, WARN_EXTENSIONS,
2655 "current standard does not allow variable declarations in for-loop initializers"))
2659 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2662 else if (parser->tok != ';')
2664 initexpr = parse_expression_leave(parser, false, false, false);
2669 /* move on to condition */
2670 if (parser->tok != ';') {
2671 parseerror(parser, "expected semicolon after for-loop initializer");
2674 if (!parser_next(parser)) {
2675 parseerror(parser, "expected for-loop condition");
2679 /* parse the condition */
2680 if (parser->tok != ';') {
2681 cond = parse_expression_leave(parser, false, true, false);
2686 /* move on to incrementor */
2687 if (parser->tok != ';') {
2688 parseerror(parser, "expected semicolon after for-loop initializer");
2691 if (!parser_next(parser)) {
2692 parseerror(parser, "expected for-loop condition");
2696 /* parse the incrementor */
2697 if (parser->tok != ')') {
2698 increment = parse_expression_leave(parser, false, false, false);
2701 if (!ast_side_effects(increment)) {
2702 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2708 if (parser->tok != ')') {
2709 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2712 /* parse into the 'then' branch */
2713 if (!parser_next(parser)) {
2714 parseerror(parser, "expected for-loop body");
2717 if (!parse_statement_or_block(parser, &ontrue))
2721 cond = process_condition(parser, cond, &ifnot);
2725 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2726 *out = (ast_expression*)aloop;
2728 if (!parser_leaveblock(parser))
2732 if (initexpr) ast_delete(initexpr);
2733 if (cond) ast_delete(cond);
2734 if (increment) ast_delete(increment);
2735 (void)!parser_leaveblock(parser);
2739 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2741 ast_expression *exp = NULL;
2742 ast_return *ret = NULL;
2743 ast_value *expected = parser->function->vtype;
2745 lex_ctx ctx = parser_ctx(parser);
2747 (void)block; /* not touching */
2749 if (!parser_next(parser)) {
2750 parseerror(parser, "expected return expression");
2754 if (parser->tok != ';') {
2755 exp = parse_expression(parser, false, false);
2759 if (exp->expression.vtype != TYPE_NIL &&
2760 exp->expression.vtype != expected->expression.next->expression.vtype)
2762 parseerror(parser, "return with invalid expression");
2765 ret = ast_return_new(ctx, exp);
2771 if (!parser_next(parser))
2772 parseerror(parser, "parse error");
2773 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2774 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2776 ret = ast_return_new(ctx, NULL);
2778 *out = (ast_expression*)ret;
2782 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2785 unsigned int levels = 0;
2786 lex_ctx ctx = parser_ctx(parser);
2787 const char **loops = (is_continue ? parser->continues : parser->breaks);
2789 (void)block; /* not touching */
2790 if (!parser_next(parser)) {
2791 parseerror(parser, "expected semicolon or loop label");
2795 if (!vec_size(loops)) {
2797 parseerror(parser, "`continue` can only be used inside loops");
2799 parseerror(parser, "`break` can only be used inside loops or switches");
2802 if (parser->tok == TOKEN_IDENT) {
2803 if (!OPTS_FLAG(LOOP_LABELS))
2804 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2805 i = vec_size(loops);
2807 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2810 parseerror(parser, "no such loop to %s: `%s`",
2811 (is_continue ? "continue" : "break out of"),
2812 parser_tokval(parser));
2817 if (!parser_next(parser)) {
2818 parseerror(parser, "expected semicolon");
2823 if (parser->tok != ';') {
2824 parseerror(parser, "expected semicolon");
2828 if (!parser_next(parser))
2829 parseerror(parser, "parse error");
2831 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2835 /* returns true when it was a variable qualifier, false otherwise!
2836 * on error, cvq is set to CV_WRONG
2838 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2840 bool had_const = false;
2841 bool had_var = false;
2842 bool had_noref = false;
2843 bool had_attrib = false;
2844 bool had_static = false;
2849 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2851 /* parse an attribute */
2852 if (!parser_next(parser)) {
2853 parseerror(parser, "expected attribute after `[[`");
2857 if (!strcmp(parser_tokval(parser), "noreturn")) {
2858 flags |= AST_FLAG_NORETURN;
2859 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2860 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2865 else if (!strcmp(parser_tokval(parser), "noref")) {
2867 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2868 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2873 else if (!strcmp(parser_tokval(parser), "inline")) {
2874 flags |= AST_FLAG_INLINE;
2875 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2876 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2883 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2884 flags |= AST_FLAG_DEPRECATED;
2887 if (!parser_next(parser)) {
2888 parseerror(parser, "parse error in attribute");
2892 if (parser->tok == '(') {
2893 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2894 parseerror(parser, "`deprecated` attribute missing parameter");
2898 *message = util_strdup(parser_tokval(parser));
2900 if (!parser_next(parser)) {
2901 parseerror(parser, "parse error in attribute");
2905 if(parser->tok != ')') {
2906 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2910 if (!parser_next(parser)) {
2911 parseerror(parser, "parse error in attribute");
2916 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2917 parseerror(parser, "`deprecated` attribute expected `]]`");
2920 if (*message) mem_d(*message);
2928 /* Skip tokens until we hit a ]] */
2929 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2930 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2931 if (!parser_next(parser)) {
2932 parseerror(parser, "error inside attribute");
2939 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2941 else if (!strcmp(parser_tokval(parser), "const"))
2943 else if (!strcmp(parser_tokval(parser), "var"))
2945 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2947 else if (!strcmp(parser_tokval(parser), "noref"))
2949 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2954 if (!parser_next(parser))
2964 *is_static = had_static;
2968 parseerror(parser, "parse error after variable qualifier");
2973 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2974 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2979 /* skip the 'while' and get the body */
2980 if (!parser_next(parser)) {
2981 if (OPTS_FLAG(LOOP_LABELS))
2982 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2984 parseerror(parser, "expected 'switch' operand in parenthesis");
2988 if (parser->tok == ':') {
2989 if (!OPTS_FLAG(LOOP_LABELS))
2990 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2991 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2992 parseerror(parser, "expected loop label");
2995 label = util_strdup(parser_tokval(parser));
2996 if (!parser_next(parser)) {
2998 parseerror(parser, "expected 'switch' operand in parenthesis");
3003 if (parser->tok != '(') {
3004 parseerror(parser, "expected 'switch' operand in parenthesis");
3008 vec_push(parser->breaks, label);
3010 rv = parse_switch_go(parser, block, out);
3013 if (vec_last(parser->breaks) != label) {
3014 parseerror(parser, "internal error: label stack corrupted");
3020 vec_pop(parser->breaks);
3025 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3027 ast_expression *operand;
3030 ast_switch *switchnode;
3031 ast_switch_case swcase;
3034 bool noref, is_static;
3035 uint32_t qflags = 0;
3037 lex_ctx ctx = parser_ctx(parser);
3039 (void)block; /* not touching */
3042 /* parse into the expression */
3043 if (!parser_next(parser)) {
3044 parseerror(parser, "expected switch operand");
3047 /* parse the operand */
3048 operand = parse_expression_leave(parser, false, false, false);
3052 switchnode = ast_switch_new(ctx, operand);
3055 if (parser->tok != ')') {
3056 ast_delete(switchnode);
3057 parseerror(parser, "expected closing paren after 'switch' operand");
3061 /* parse over the opening paren */
3062 if (!parser_next(parser) || parser->tok != '{') {
3063 ast_delete(switchnode);
3064 parseerror(parser, "expected list of cases");
3068 if (!parser_next(parser)) {
3069 ast_delete(switchnode);
3070 parseerror(parser, "expected 'case' or 'default'");
3074 /* new block; allow some variables to be declared here */
3075 parser_enterblock(parser);
3078 if (parser->tok == TOKEN_IDENT)
3079 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3080 if (typevar || parser->tok == TOKEN_TYPENAME) {
3081 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3082 ast_delete(switchnode);
3087 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3089 if (cvq == CV_WRONG) {
3090 ast_delete(switchnode);
3093 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3094 ast_delete(switchnode);
3103 while (parser->tok != '}') {
3104 ast_block *caseblock;
3106 if (!strcmp(parser_tokval(parser), "case")) {
3107 if (!parser_next(parser)) {
3108 ast_delete(switchnode);
3109 parseerror(parser, "expected expression for case");
3112 swcase.value = parse_expression_leave(parser, false, false, false);
3113 if (!swcase.value) {
3114 ast_delete(switchnode);
3115 parseerror(parser, "expected expression for case");
3118 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3119 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3120 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3126 else if (!strcmp(parser_tokval(parser), "default")) {
3127 swcase.value = NULL;
3128 if (!parser_next(parser)) {
3129 ast_delete(switchnode);
3130 parseerror(parser, "expected colon");
3135 ast_delete(switchnode);
3136 parseerror(parser, "expected 'case' or 'default'");
3140 /* Now the colon and body */
3141 if (parser->tok != ':') {
3142 if (swcase.value) ast_unref(swcase.value);
3143 ast_delete(switchnode);
3144 parseerror(parser, "expected colon");
3148 if (!parser_next(parser)) {
3149 if (swcase.value) ast_unref(swcase.value);
3150 ast_delete(switchnode);
3151 parseerror(parser, "expected statements or case");
3154 caseblock = ast_block_new(parser_ctx(parser));
3156 if (swcase.value) ast_unref(swcase.value);
3157 ast_delete(switchnode);
3160 swcase.code = (ast_expression*)caseblock;
3161 vec_push(switchnode->cases, swcase);
3163 ast_expression *expr;
3164 if (parser->tok == '}')
3166 if (parser->tok == TOKEN_KEYWORD) {
3167 if (!strcmp(parser_tokval(parser), "case") ||
3168 !strcmp(parser_tokval(parser), "default"))
3173 if (!parse_statement(parser, caseblock, &expr, true)) {
3174 ast_delete(switchnode);
3179 if (!ast_block_add_expr(caseblock, expr)) {
3180 ast_delete(switchnode);
3186 parser_leaveblock(parser);
3189 if (parser->tok != '}') {
3190 ast_delete(switchnode);
3191 parseerror(parser, "expected closing paren of case list");
3194 if (!parser_next(parser)) {
3195 ast_delete(switchnode);
3196 parseerror(parser, "parse error after switch");
3199 *out = (ast_expression*)switchnode;
3203 /* parse computed goto sides */
3204 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3205 ast_expression *on_true;
3206 ast_expression *on_false;
3207 ast_expression *cond;
3212 if (ast_istype(*side, ast_ternary)) {
3213 ast_ternary *tern = (ast_ternary*)*side;
3214 on_true = parse_goto_computed(parser, &tern->on_true);
3215 on_false = parse_goto_computed(parser, &tern->on_false);
3217 if (!on_true || !on_false) {
3218 parseerror(parser, "expected label or expression in ternary");
3219 if (on_true) ast_unref(on_true);
3220 if (on_false) ast_unref(on_false);
3228 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3229 } else if (ast_istype(*side, ast_label)) {
3230 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3231 ast_goto_set_label(gt, ((ast_label*)*side));
3233 return (ast_expression*)gt;
3238 static bool parse_goto(parser_t *parser, ast_expression **out)
3240 ast_goto *gt = NULL;
3241 ast_expression *lbl;
3243 if (!parser_next(parser))
3246 if (parser->tok != TOKEN_IDENT) {
3247 ast_expression *expression;
3249 /* could be an expression i.e computed goto :-) */
3250 if (parser->tok != '(') {
3251 parseerror(parser, "expected label name after `goto`");
3255 /* failed to parse expression for goto */
3256 if (!(expression = parse_expression(parser, false, true)) ||
3257 !(*out = parse_goto_computed(parser, &expression))) {
3258 parseerror(parser, "invalid goto expression");
3259 ast_unref(expression);
3266 /* not computed goto */
3267 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3268 lbl = parser_find_label(parser, gt->name);
3270 if (!ast_istype(lbl, ast_label)) {
3271 parseerror(parser, "internal error: label is not an ast_label");
3275 ast_goto_set_label(gt, (ast_label*)lbl);
3278 vec_push(parser->gotos, gt);
3280 if (!parser_next(parser) || parser->tok != ';') {
3281 parseerror(parser, "semicolon expected after goto label");
3284 if (!parser_next(parser)) {
3285 parseerror(parser, "parse error after goto");
3289 *out = (ast_expression*)gt;
3293 static bool parse_skipwhite(parser_t *parser)
3296 if (!parser_next(parser))
3298 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3299 return parser->tok < TOKEN_ERROR;
3302 static bool parse_eol(parser_t *parser)
3304 if (!parse_skipwhite(parser))
3306 return parser->tok == TOKEN_EOL;
3309 static bool parse_pragma_do(parser_t *parser)
3311 if (!parser_next(parser) ||
3312 parser->tok != TOKEN_IDENT ||
3313 strcmp(parser_tokval(parser), "pragma"))
3315 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3318 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3319 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3323 if (!strcmp(parser_tokval(parser), "noref")) {
3324 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3325 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3328 parser->noref = !!parser_token(parser)->constval.i;
3329 if (!parse_eol(parser)) {
3330 parseerror(parser, "parse error after `noref` pragma");
3336 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3343 static bool parse_pragma(parser_t *parser)
3346 parser->lex->flags.preprocessing = true;
3347 parser->lex->flags.mergelines = true;
3348 rv = parse_pragma_do(parser);
3349 if (parser->tok != TOKEN_EOL) {
3350 parseerror(parser, "junk after pragma");
3353 parser->lex->flags.preprocessing = false;
3354 parser->lex->flags.mergelines = false;
3355 if (!parser_next(parser)) {
3356 parseerror(parser, "parse error after pragma");
3362 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3364 bool noref, is_static;
3366 uint32_t qflags = 0;
3367 ast_value *typevar = NULL;
3368 char *vstring = NULL;
3372 if (parser->tok == TOKEN_IDENT)
3373 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3375 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3377 /* local variable */
3379 parseerror(parser, "cannot declare a variable from here");
3382 if (opts.standard == COMPILER_QCC) {
3383 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3386 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3390 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3392 if (cvq == CV_WRONG)
3394 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3396 else if (parser->tok == TOKEN_KEYWORD)
3398 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3403 if (!parser_next(parser)) {
3404 parseerror(parser, "parse error after __builtin_debug_printtype");
3408 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3410 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3411 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3412 if (!parser_next(parser)) {
3413 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3419 if (!parse_statement(parser, block, out, allow_cases))
3422 con_out("__builtin_debug_printtype: got no output node\n");
3425 ast_type_to_string(*out, ty, sizeof(ty));
3426 con_out("__builtin_debug_printtype: `%s`\n", ty);
3431 else if (!strcmp(parser_tokval(parser), "return"))
3433 return parse_return(parser, block, out);
3435 else if (!strcmp(parser_tokval(parser), "if"))
3437 return parse_if(parser, block, out);
3439 else if (!strcmp(parser_tokval(parser), "while"))
3441 return parse_while(parser, block, out);
3443 else if (!strcmp(parser_tokval(parser), "do"))
3445 return parse_dowhile(parser, block, out);
3447 else if (!strcmp(parser_tokval(parser), "for"))
3449 if (opts.standard == COMPILER_QCC) {
3450 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3453 return parse_for(parser, block, out);
3455 else if (!strcmp(parser_tokval(parser), "break"))
3457 return parse_break_continue(parser, block, out, false);
3459 else if (!strcmp(parser_tokval(parser), "continue"))
3461 return parse_break_continue(parser, block, out, true);
3463 else if (!strcmp(parser_tokval(parser), "switch"))
3465 return parse_switch(parser, block, out);
3467 else if (!strcmp(parser_tokval(parser), "case") ||
3468 !strcmp(parser_tokval(parser), "default"))
3471 parseerror(parser, "unexpected 'case' label");
3476 else if (!strcmp(parser_tokval(parser), "goto"))
3478 return parse_goto(parser, out);
3480 else if (!strcmp(parser_tokval(parser), "typedef"))
3482 if (!parser_next(parser)) {
3483 parseerror(parser, "expected type definition after 'typedef'");
3486 return parse_typedef(parser);
3488 parseerror(parser, "Unexpected keyword");
3491 else if (parser->tok == '{')
3494 inner = parse_block(parser);
3497 *out = (ast_expression*)inner;
3500 else if (parser->tok == ':')
3504 if (!parser_next(parser)) {
3505 parseerror(parser, "expected label name");
3508 if (parser->tok != TOKEN_IDENT) {
3509 parseerror(parser, "label must be an identifier");
3512 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3514 if (!label->undefined) {
3515 parseerror(parser, "label `%s` already defined", label->name);
3518 label->undefined = false;
3521 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3522 vec_push(parser->labels, label);
3524 *out = (ast_expression*)label;
3525 if (!parser_next(parser)) {
3526 parseerror(parser, "parse error after label");
3529 for (i = 0; i < vec_size(parser->gotos); ++i) {
3530 if (!strcmp(parser->gotos[i]->name, label->name)) {
3531 ast_goto_set_label(parser->gotos[i], label);
3532 vec_remove(parser->gotos, i, 1);
3538 else if (parser->tok == ';')
3540 if (!parser_next(parser)) {
3541 parseerror(parser, "parse error after empty statement");
3548 ast_expression *exp = parse_expression(parser, false, false);
3552 if (!ast_side_effects(exp)) {
3553 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3560 static bool parse_enum(parser_t *parser)
3563 ast_value **values = NULL;
3564 ast_value *var = NULL;
3567 ast_expression *old;
3569 if (!parser_next(parser) || parser->tok != '{') {
3570 parseerror(parser, "expected `{` after `enum` keyword");
3575 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3576 if (parser->tok == '}') {
3577 /* allow an empty enum */
3580 parseerror(parser, "expected identifier or `}`");
3584 old = parser_find_field(parser, parser_tokval(parser));
3586 old = parser_find_global(parser, parser_tokval(parser));
3588 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3589 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3593 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3594 vec_push(values, var);
3595 var->cvq = CV_CONST;
3596 var->hasvalue = true;
3597 var->constval.vfloat = num++;
3599 parser_addglobal(parser, var->name, (ast_expression*)var);
3601 if (!parser_next(parser)) {
3602 parseerror(parser, "expected `=`, `}` or comma after identifier");
3606 if (parser->tok == ',')
3608 if (parser->tok == '}')
3610 if (parser->tok != '=') {
3611 parseerror(parser, "expected `=`, `}` or comma after identifier");
3615 if (!parser_next(parser)) {
3616 parseerror(parser, "expected expression after `=`");
3620 /* We got a value! */
3621 old = parse_expression_leave(parser, true, false, false);
3622 asvalue = (ast_value*)old;
3623 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3624 compile_error(ast_ctx(var), "constant value or expression expected");
3627 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3629 if (parser->tok == '}')
3631 if (parser->tok != ',') {
3632 parseerror(parser, "expected `}` or comma after expression");
3637 if (parser->tok != '}') {
3638 parseerror(parser, "internal error: breaking without `}`");
3642 if (!parser_next(parser) || parser->tok != ';') {
3643 parseerror(parser, "expected semicolon after enumeration");
3647 if (!parser_next(parser)) {
3648 parseerror(parser, "parse error after enumeration");
3660 static bool parse_block_into(parser_t *parser, ast_block *block)
3664 parser_enterblock(parser);
3666 if (!parser_next(parser)) { /* skip the '{' */
3667 parseerror(parser, "expected function body");
3671 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3673 ast_expression *expr = NULL;
3674 if (parser->tok == '}')
3677 if (!parse_statement(parser, block, &expr, false)) {
3678 /* parseerror(parser, "parse error"); */
3684 if (!ast_block_add_expr(block, expr)) {
3691 if (parser->tok != '}') {
3694 (void)parser_next(parser);
3698 if (!parser_leaveblock(parser))
3700 return retval && !!block;
3703 static ast_block* parse_block(parser_t *parser)
3706 block = ast_block_new(parser_ctx(parser));
3709 if (!parse_block_into(parser, block)) {
3710 ast_block_delete(block);
3716 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3718 if (parser->tok == '{') {
3719 *out = (ast_expression*)parse_block(parser);
3722 return parse_statement(parser, NULL, out, false);
3725 static bool create_vector_members(ast_value *var, ast_member **me)
3728 size_t len = strlen(var->name);
3730 for (i = 0; i < 3; ++i) {
3731 char *name = (char*)mem_a(len+3);
3732 memcpy(name, var->name, len);
3734 name[len+1] = 'x'+i;
3736 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3745 do { ast_member_delete(me[--i]); } while(i);
3749 static bool parse_function_body(parser_t *parser, ast_value *var)
3751 ast_block *block = NULL;
3756 ast_expression *framenum = NULL;
3757 ast_expression *nextthink = NULL;
3758 /* None of the following have to be deleted */
3759 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3760 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3761 bool has_frame_think;
3765 has_frame_think = false;
3766 old = parser->function;
3768 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3769 parseerror(parser, "gotos/labels leaking");
3773 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
3774 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3775 "variadic function with implementation will not be able to access additional parameters"))
3781 if (parser->tok == '[') {
3782 /* got a frame definition: [ framenum, nextthink ]
3783 * this translates to:
3784 * self.frame = framenum;
3785 * self.nextthink = time + 0.1;
3786 * self.think = nextthink;
3790 fld_think = parser_find_field(parser, "think");
3791 fld_nextthink = parser_find_field(parser, "nextthink");
3792 fld_frame = parser_find_field(parser, "frame");
3793 if (!fld_think || !fld_nextthink || !fld_frame) {
3794 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3795 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3798 gbl_time = parser_find_global(parser, "time");
3799 gbl_self = parser_find_global(parser, "self");
3800 if (!gbl_time || !gbl_self) {
3801 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3802 parseerror(parser, "please declare the following globals: `time`, `self`");
3806 if (!parser_next(parser))
3809 framenum = parse_expression_leave(parser, true, false, false);
3811 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3814 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3815 ast_unref(framenum);
3816 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3820 if (parser->tok != ',') {
3821 ast_unref(framenum);
3822 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3823 parseerror(parser, "Got a %i\n", parser->tok);
3827 if (!parser_next(parser)) {
3828 ast_unref(framenum);
3832 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3834 /* qc allows the use of not-yet-declared functions here
3835 * - this automatically creates a prototype */
3836 ast_value *thinkfunc;
3837 ast_expression *functype = fld_think->expression.next;
3839 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3840 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3841 ast_unref(framenum);
3842 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3846 if (!parser_next(parser)) {
3847 ast_unref(framenum);
3848 ast_delete(thinkfunc);
3852 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3854 nextthink = (ast_expression*)thinkfunc;
3857 nextthink = parse_expression_leave(parser, true, false, false);
3859 ast_unref(framenum);
3860 parseerror(parser, "expected a think-function in [frame,think] notation");
3865 if (!ast_istype(nextthink, ast_value)) {
3866 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3870 if (retval && parser->tok != ']') {
3871 parseerror(parser, "expected closing `]` for [frame,think] notation");
3875 if (retval && !parser_next(parser)) {
3879 if (retval && parser->tok != '{') {
3880 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3885 ast_unref(nextthink);
3886 ast_unref(framenum);
3890 has_frame_think = true;
3893 block = ast_block_new(parser_ctx(parser));
3895 parseerror(parser, "failed to allocate block");
3896 if (has_frame_think) {
3897 ast_unref(nextthink);
3898 ast_unref(framenum);
3903 if (has_frame_think) {
3905 ast_expression *self_frame;
3906 ast_expression *self_nextthink;
3907 ast_expression *self_think;
3908 ast_expression *time_plus_1;
3909 ast_store *store_frame;
3910 ast_store *store_nextthink;
3911 ast_store *store_think;
3913 ctx = parser_ctx(parser);
3914 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3915 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3916 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3918 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3919 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3921 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3922 if (self_frame) ast_delete(self_frame);
3923 if (self_nextthink) ast_delete(self_nextthink);
3924 if (self_think) ast_delete(self_think);
3925 if (time_plus_1) ast_delete(time_plus_1);
3931 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3932 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3933 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3936 ast_delete(self_frame);
3939 if (!store_nextthink) {
3940 ast_delete(self_nextthink);
3944 ast_delete(self_think);
3948 if (store_frame) ast_delete(store_frame);
3949 if (store_nextthink) ast_delete(store_nextthink);
3950 if (store_think) ast_delete(store_think);
3953 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3954 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3955 !ast_block_add_expr(block, (ast_expression*)store_think))
3962 parseerror(parser, "failed to generate code for [frame,think]");
3963 ast_unref(nextthink);
3964 ast_unref(framenum);
3970 parser_enterblock(parser);
3972 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3974 ast_value *param = var->expression.params[parami];
3977 if (param->expression.vtype != TYPE_VECTOR &&
3978 (param->expression.vtype != TYPE_FIELD ||
3979 param->expression.next->expression.vtype != TYPE_VECTOR))
3984 if (!create_vector_members(param, me)) {
3985 ast_block_delete(block);
3989 for (e = 0; e < 3; ++e) {
3990 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3991 ast_block_collect(block, (ast_expression*)me[e]);
3995 func = ast_function_new(ast_ctx(var), var->name, var);
3997 parseerror(parser, "failed to allocate function for `%s`", var->name);
3998 ast_block_delete(block);
4001 vec_push(parser->functions, func);
4003 if (var->argcounter) {
4004 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4005 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4009 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4011 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4012 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4013 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4014 varargs->expression.count = 0;
4015 snprintf(name, sizeof(name), "%s##va##SET", var->name);
4016 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4017 ast_delete(varargs);
4018 ast_block_delete(block);
4021 snprintf(name, sizeof(name), "%s##va##GET", var->name);
4022 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4023 ast_delete(varargs);
4024 ast_block_delete(block);
4027 func->varargs = varargs;
4030 parser->function = func;
4031 if (!parse_block_into(parser, block)) {
4032 ast_block_delete(block);
4036 vec_push(func->blocks, block);
4038 parser->function = old;
4039 if (!parser_leaveblock(parser))
4041 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4042 parseerror(parser, "internal error: local scopes left");
4046 if (parser->tok == ';')
4047 return parser_next(parser);
4048 else if (opts.standard == COMPILER_QCC)
4049 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4053 vec_pop(parser->functions);
4054 ast_function_delete(func);
4055 var->constval.vfunc = NULL;
4058 (void)!parser_leaveblock(parser);
4059 parser->function = old;
4063 static ast_expression *array_accessor_split(
4068 ast_expression *left,
4069 ast_expression *right
4075 lex_ctx ctx = ast_ctx(array);
4077 if (!left || !right) {
4078 if (left) ast_delete(left);
4079 if (right) ast_delete(right);
4083 cmp = ast_binary_new(ctx, INSTR_LT,
4084 (ast_expression*)index,
4085 (ast_expression*)parser_const_float(parser, middle));
4089 parseerror(parser, "internal error: failed to create comparison for array setter");
4093 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4095 ast_delete(cmp); /* will delete left and right */
4096 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4100 return (ast_expression*)ifthen;
4103 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4105 lex_ctx ctx = ast_ctx(array);
4107 if (from+1 == afterend) {
4108 /* set this value */
4111 ast_array_index *subscript;
4113 int assignop = type_store_instr[value->expression.vtype];
4115 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
4116 assignop = INSTR_STORE_V;
4118 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4122 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4124 ast_delete(subscript);
4128 block = ast_block_new(ctx);
4134 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4139 ret = ast_return_new(ctx, NULL);
4145 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4150 return (ast_expression*)block;
4152 ast_expression *left, *right;
4153 size_t diff = afterend - from;
4154 size_t middle = from + diff/2;
4155 left = array_setter_node(parser, array, index, value, from, middle);
4156 right = array_setter_node(parser, array, index, value, middle, afterend);
4157 return array_accessor_split(parser, array, index, middle, left, right);
4161 static ast_expression *array_field_setter_node(
4170 lex_ctx ctx = ast_ctx(array);
4172 if (from+1 == afterend) {
4173 /* set this value */
4176 ast_entfield *entfield;
4177 ast_array_index *subscript;
4179 int assignop = type_storep_instr[value->expression.vtype];
4181 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
4182 assignop = INSTR_STOREP_V;
4184 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4188 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4189 subscript->expression.vtype = TYPE_FIELD;
4191 entfield = ast_entfield_new_force(ctx,
4192 (ast_expression*)entity,
4193 (ast_expression*)subscript,
4194 (ast_expression*)subscript);
4196 ast_delete(subscript);
4200 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4202 ast_delete(entfield);
4206 block = ast_block_new(ctx);
4212 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4217 ret = ast_return_new(ctx, NULL);
4223 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4228 return (ast_expression*)block;
4230 ast_expression *left, *right;
4231 size_t diff = afterend - from;
4232 size_t middle = from + diff/2;
4233 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4234 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4235 return array_accessor_split(parser, array, index, middle, left, right);
4239 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4241 lex_ctx ctx = ast_ctx(array);
4243 if (from+1 == afterend) {
4245 ast_array_index *subscript;
4247 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4251 ret = ast_return_new(ctx, (ast_expression*)subscript);
4253 ast_delete(subscript);
4257 return (ast_expression*)ret;
4259 ast_expression *left, *right;
4260 size_t diff = afterend - from;
4261 size_t middle = from + diff/2;
4262 left = array_getter_node(parser, array, index, from, middle);
4263 right = array_getter_node(parser, array, index, middle, afterend);
4264 return array_accessor_split(parser, array, index, middle, left, right);
4268 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4270 ast_function *func = NULL;
4271 ast_value *fval = NULL;
4272 ast_block *body = NULL;
4274 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4276 parseerror(parser, "failed to create accessor function value");
4280 func = ast_function_new(ast_ctx(array), funcname, fval);
4283 parseerror(parser, "failed to create accessor function node");
4287 body = ast_block_new(ast_ctx(array));
4289 parseerror(parser, "failed to create block for array accessor");
4295 vec_push(func->blocks, body);
4298 vec_push(parser->accessors, fval);
4303 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4305 ast_value *index = NULL;
4306 ast_value *value = NULL;
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_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4320 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4321 value = ast_value_copy((ast_value*)array->expression.next);
4323 if (!index || !value) {
4324 parseerror(parser, "failed to create locals for array accessor");
4327 (void)!ast_value_set_name(value, "value"); /* not important */
4328 vec_push(fval->expression.params, index);
4329 vec_push(fval->expression.params, value);
4331 array->setter = fval;
4334 if (index) ast_delete(index);
4335 if (value) ast_delete(value);
4341 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4343 ast_expression *root = NULL;
4344 root = array_setter_node(parser, array,
4345 array->setter->expression.params[0],
4346 array->setter->expression.params[1],
4347 0, array->expression.count);
4349 parseerror(parser, "failed to build accessor search tree");
4352 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4359 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4361 if (!parser_create_array_setter_proto(parser, array, funcname))
4363 return parser_create_array_setter_impl(parser, array);
4366 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4368 ast_expression *root = NULL;
4369 ast_value *entity = NULL;
4370 ast_value *index = NULL;
4371 ast_value *value = NULL;
4375 if (!ast_istype(array->expression.next, ast_value)) {
4376 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4380 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4382 func = fval->constval.vfunc;
4383 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4385 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4386 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4387 value = ast_value_copy((ast_value*)array->expression.next);
4388 if (!entity || !index || !value) {
4389 parseerror(parser, "failed to create locals for array accessor");
4392 (void)!ast_value_set_name(value, "value"); /* not important */
4393 vec_push(fval->expression.params, entity);
4394 vec_push(fval->expression.params, index);
4395 vec_push(fval->expression.params, value);
4397 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4399 parseerror(parser, "failed to build accessor search tree");
4403 array->setter = fval;
4404 return ast_block_add_expr(func->blocks[0], root);
4406 if (entity) ast_delete(entity);
4407 if (index) ast_delete(index);
4408 if (value) ast_delete(value);
4409 if (root) ast_delete(root);
4415 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4417 ast_value *index = NULL;
4421 /* NOTE: checking array->expression.next rather than elemtype since
4422 * for fields elemtype is a temporary fieldtype.
4424 if (!ast_istype(array->expression.next, ast_value)) {
4425 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4429 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4431 func = fval->constval.vfunc;
4432 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4434 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4437 parseerror(parser, "failed to create locals for array accessor");
4440 vec_push(fval->expression.params, index);
4442 array->getter = fval;
4445 if (index) ast_delete(index);
4451 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4453 ast_expression *root = NULL;
4455 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4457 parseerror(parser, "failed to build accessor search tree");
4460 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4467 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4469 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4471 return parser_create_array_getter_impl(parser, array);
4474 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4475 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4483 bool variadic = false;
4484 ast_value *varparam = NULL;
4485 char *argcounter = NULL;
4487 ctx = parser_ctx(parser);
4489 /* for the sake of less code we parse-in in this function */
4490 if (!parser_next(parser)) {
4491 parseerror(parser, "expected parameter list");
4497 /* parse variables until we hit a closing paren */
4498 while (parser->tok != ')') {
4500 /* there must be commas between them */
4501 if (parser->tok != ',') {
4502 parseerror(parser, "expected comma or end of parameter list");
4505 if (!parser_next(parser)) {
4506 parseerror(parser, "expected parameter");
4512 if (parser->tok == TOKEN_DOTS) {
4513 /* '...' indicates a varargs function */
4515 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4516 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4519 if (parser->tok == TOKEN_IDENT) {
4520 argcounter = util_strdup(parser_tokval(parser));
4521 if (!parser_next(parser) || parser->tok != ')') {
4522 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4529 /* for anything else just parse a typename */
4530 param = parse_typename(parser, NULL, NULL);
4533 vec_push(params, param);
4534 if (param->expression.vtype >= TYPE_VARIANT) {
4535 char tname[1024]; /* typename is reserved in C++ */
4536 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4537 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4540 /* type-restricted varargs */
4541 if (parser->tok == TOKEN_DOTS) {
4543 varparam = vec_last(params);
4545 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4546 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4549 if (parser->tok == TOKEN_IDENT) {
4550 argcounter = util_strdup(parser_tokval(parser));
4551 if (!parser_next(parser) || parser->tok != ')') {
4552 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4560 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4564 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
4565 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4568 if (!parser_next(parser)) {
4569 parseerror(parser, "parse error after typename");
4573 /* now turn 'var' into a function type */
4574 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4575 fval->expression.next = (ast_expression*)var;
4577 fval->expression.flags |= AST_FLAG_VARIADIC;
4580 var->expression.params = params;
4581 var->expression.varparam = (ast_expression*)varparam;
4582 var->argcounter = argcounter;
4591 for (i = 0; i < vec_size(params); ++i)
4592 ast_delete(params[i]);
4597 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4599 ast_expression *cexp;
4600 ast_value *cval, *tmp;
4603 ctx = parser_ctx(parser);
4605 if (!parser_next(parser)) {
4607 parseerror(parser, "expected array-size");
4611 cexp = parse_expression_leave(parser, true, false, false);
4613 if (!cexp || !ast_istype(cexp, ast_value)) {
4617 parseerror(parser, "expected array-size as constant positive integer");
4620 cval = (ast_value*)cexp;
4622 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4623 tmp->expression.next = (ast_expression*)var;
4626 if (cval->expression.vtype == TYPE_INTEGER)
4627 tmp->expression.count = cval->constval.vint;
4628 else if (cval->expression.vtype == TYPE_FLOAT)
4629 tmp->expression.count = cval->constval.vfloat;
4633 parseerror(parser, "array-size must be a positive integer constant");
4638 if (parser->tok != ']') {
4640 parseerror(parser, "expected ']' after array-size");
4643 if (!parser_next(parser)) {
4645 parseerror(parser, "error after parsing array size");
4651 /* Parse a complete typename.
4652 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4653 * but when parsing variables separated by comma
4654 * 'storebase' should point to where the base-type should be kept.
4655 * The base type makes up every bit of type information which comes *before* the
4658 * The following will be parsed in its entirety:
4660 * The 'basetype' in this case is 'void()'
4661 * and if there's a comma after it, say:
4663 * then the type-information 'void()' can be stored in 'storebase'
4665 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4667 ast_value *var, *tmp;
4670 const char *name = NULL;
4671 bool isfield = false;
4672 bool wasarray = false;
4673 size_t morefields = 0;
4675 ctx = parser_ctx(parser);
4677 /* types may start with a dot */
4678 if (parser->tok == '.') {
4680 /* if we parsed a dot we need a typename now */
4681 if (!parser_next(parser)) {
4682 parseerror(parser, "expected typename for field definition");
4686 /* Further dots are handled seperately because they won't be part of the
4689 while (parser->tok == '.') {
4691 if (!parser_next(parser)) {
4692 parseerror(parser, "expected typename for field definition");
4697 if (parser->tok == TOKEN_IDENT)
4698 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4699 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4700 parseerror(parser, "expected typename");
4704 /* generate the basic type value */
4705 if (cached_typedef) {
4706 var = ast_value_copy(cached_typedef);
4707 ast_value_set_name(var, "<type(from_def)>");
4709 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4711 for (; morefields; --morefields) {
4712 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4713 tmp->expression.next = (ast_expression*)var;
4717 /* do not yet turn into a field - remember:
4718 * .void() foo; is a field too
4719 * .void()() foo; is a function
4723 if (!parser_next(parser)) {
4725 parseerror(parser, "parse error after typename");
4729 /* an opening paren now starts the parameter-list of a function
4730 * this is where original-QC has parameter lists.
4731 * We allow a single parameter list here.
4732 * Much like fteqcc we don't allow `float()() x`
4734 if (parser->tok == '(') {
4735 var = parse_parameter_list(parser, var);
4740 /* store the base if requested */
4742 *storebase = ast_value_copy(var);
4744 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4745 tmp->expression.next = (ast_expression*)*storebase;
4750 /* there may be a name now */
4751 if (parser->tok == TOKEN_IDENT) {
4752 name = util_strdup(parser_tokval(parser));
4754 if (!parser_next(parser)) {
4756 parseerror(parser, "error after variable or field declaration");
4761 /* now this may be an array */
4762 if (parser->tok == '[') {
4764 var = parse_arraysize(parser, var);
4769 /* This is the point where we can turn it into a field */
4771 /* turn it into a field if desired */
4772 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4773 tmp->expression.next = (ast_expression*)var;
4777 /* now there may be function parens again */
4778 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
4779 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4780 if (parser->tok == '(' && wasarray)
4781 parseerror(parser, "arrays as part of a return type is not supported");
4782 while (parser->tok == '(') {
4783 var = parse_parameter_list(parser, var);
4792 /* finally name it */
4794 if (!ast_value_set_name(var, name)) {
4796 parseerror(parser, "internal error: failed to set name");
4799 /* free the name, ast_value_set_name duplicates */
4806 static bool parse_typedef(parser_t *parser)
4808 ast_value *typevar, *oldtype;
4809 ast_expression *old;
4811 typevar = parse_typename(parser, NULL, NULL);
4816 if ( (old = parser_find_var(parser, typevar->name)) ) {
4817 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4818 " -> `%s` has been declared here: %s:%i",
4819 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4820 ast_delete(typevar);
4824 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4825 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4826 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4827 ast_delete(typevar);
4831 vec_push(parser->_typedefs, typevar);
4832 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4834 if (parser->tok != ';') {
4835 parseerror(parser, "expected semicolon after typedef");
4838 if (!parser_next(parser)) {
4839 parseerror(parser, "parse error after typedef");
4846 static const char *cvq_to_str(int cvq) {
4848 case CV_NONE: return "none";
4849 case CV_VAR: return "`var`";
4850 case CV_CONST: return "`const`";
4851 default: return "<INVALID>";
4855 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4858 if (proto->cvq != var->cvq) {
4859 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4860 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4861 parser->tok == '='))
4863 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4864 "`%s` declared with different qualifiers: %s\n"
4865 " -> previous declaration here: %s:%i uses %s",
4866 var->name, cvq_to_str(var->cvq),
4867 ast_ctx(proto).file, ast_ctx(proto).line,
4868 cvq_to_str(proto->cvq));
4871 av = (var ->expression.flags & AST_FLAG_NORETURN);
4872 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4874 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4875 "`%s` declared with different attributes%s\n"
4876 " -> previous declaration here: %s:%i",
4877 var->name, (av ? ": noreturn" : ""),
4878 ast_ctx(proto).file, ast_ctx(proto).line,
4879 (ao ? ": noreturn" : ""));
4884 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)
4888 ast_expression *old;
4892 ast_value *basetype = NULL;
4894 bool isparam = false;
4895 bool isvector = false;
4896 bool cleanvar = true;
4897 bool wasarray = false;
4901 if (!localblock && is_static)
4902 parseerror(parser, "`static` qualifier is not supported in global scope");
4904 /* get the first complete variable */
4905 var = parse_typename(parser, &basetype, cached_typedef);
4908 ast_delete(basetype);
4916 /* Part 0: finish the type */
4917 if (parser->tok == '(') {
4918 if (opts.standard == COMPILER_QCC)
4919 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4920 var = parse_parameter_list(parser, var);
4926 /* we only allow 1-dimensional arrays */
4927 if (parser->tok == '[') {
4929 var = parse_arraysize(parser, var);
4935 if (parser->tok == '(' && wasarray) {
4936 parseerror(parser, "arrays as part of a return type is not supported");
4937 /* we'll still parse the type completely for now */
4939 /* for functions returning functions */
4940 while (parser->tok == '(') {
4941 if (opts.standard == COMPILER_QCC)
4942 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4943 var = parse_parameter_list(parser, var);
4950 var->cvq = qualifier;
4951 var->expression.flags |= qflags;
4952 if (var->expression.flags & AST_FLAG_DEPRECATED)
4953 var->desc = vstring;
4956 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4957 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4958 * is then filled with the previous definition and the parameter-names replaced.
4960 if (!strcmp(var->name, "nil")) {
4961 if (OPTS_FLAG(UNTYPED_NIL)) {
4962 if (!localblock || !OPTS_FLAG(PERMISSIVE))
4963 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
4965 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
4968 /* Deal with end_sys_ vars */
4970 if (!strcmp(var->name, "end_sys_globals")) {
4972 parser->crc_globals = vec_size(parser->globals);
4975 else if (!strcmp(var->name, "end_sys_fields")) {
4977 parser->crc_fields = vec_size(parser->fields);
4980 if (was_end && var->expression.vtype == TYPE_FIELD) {
4981 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4982 "global '%s' hint should not be a field",
4983 parser_tokval(parser)))
4990 if (!nofields && var->expression.vtype == TYPE_FIELD)
4992 /* deal with field declarations */
4993 old = parser_find_field(parser, var->name);
4995 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4996 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5005 parseerror(parser, "field `%s` already declared here: %s:%i",
5006 var->name, ast_ctx(old).file, ast_ctx(old).line);
5011 if ((opts.standard == COMPILER_QCC || opts.standard == COMPILER_FTEQCC) &&
5012 (old = parser_find_global(parser, var->name)))
5014 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5015 parseerror(parser, "field `%s` already declared here: %s:%i",
5016 var->name, ast_ctx(old).file, ast_ctx(old).line);
5023 /* deal with other globals */
5024 old = parser_find_global(parser, var->name);
5025 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
5027 /* This is a function which had a prototype */
5028 if (!ast_istype(old, ast_value)) {
5029 parseerror(parser, "internal error: prototype is not an ast_value");
5033 proto = (ast_value*)old;
5034 proto->desc = var->desc;
5035 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5036 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5038 ast_ctx(proto).file, ast_ctx(proto).line);
5042 /* we need the new parameter-names */
5043 for (i = 0; i < vec_size(proto->expression.params); ++i)
5044 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5045 if (!parser_check_qualifiers(parser, var, proto)) {
5052 proto->expression.flags |= var->expression.flags;
5060 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5061 "global `%s` already declared here: %s:%i",
5062 var->name, ast_ctx(old).file, ast_ctx(old).line))
5067 proto = (ast_value*)old;
5068 if (!ast_istype(old, ast_value)) {
5069 parseerror(parser, "internal error: not an ast_value");
5074 if (!parser_check_qualifiers(parser, var, proto)) {
5079 proto->expression.flags |= var->expression.flags;
5083 if (opts.standard == COMPILER_QCC &&
5084 (old = parser_find_field(parser, var->name)))
5086 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5087 parseerror(parser, "global `%s` already declared here: %s:%i",
5088 var->name, ast_ctx(old).file, ast_ctx(old).line);
5095 else /* it's not a global */
5097 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5098 if (old && !isparam) {
5099 parseerror(parser, "local `%s` already declared here: %s:%i",
5100 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5104 old = parser_find_local(parser, var->name, 0, &isparam);
5105 if (old && isparam) {
5106 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5107 "local `%s` is shadowing a parameter", var->name))
5109 parseerror(parser, "local `%s` already declared here: %s:%i",
5110 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5114 if (opts.standard != COMPILER_GMQCC) {
5122 /* in a noref section we simply bump the usecount */
5123 if (noref || parser->noref)
5127 * Create the global/local, and deal with vector types.
5130 if (var->expression.vtype == TYPE_VECTOR)
5132 else if (var->expression.vtype == TYPE_FIELD &&
5133 var->expression.next->expression.vtype == TYPE_VECTOR)
5137 if (!create_vector_members(var, me)) {
5144 /* deal with global variables, fields, functions */
5145 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5146 var->isfield = true;
5147 vec_push(parser->fields, (ast_expression*)var);
5148 util_htset(parser->htfields, var->name, var);
5150 for (i = 0; i < 3; ++i) {
5151 vec_push(parser->fields, (ast_expression*)me[i]);
5152 util_htset(parser->htfields, me[i]->name, me[i]);
5157 parser_addglobal(parser, var->name, (ast_expression*)var);
5159 for (i = 0; i < 3; ++i) {
5160 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5166 /* a static adds itself to be generated like any other global
5167 * but is added to the local namespace instead
5169 char *defname = NULL;
5170 size_t prefix_len, ln;
5172 ln = strlen(parser->function->name);
5173 vec_append(defname, ln, parser->function->name);
5175 vec_append(defname, 2, "::");
5176 /* remember the length up to here */
5177 prefix_len = vec_size(defname);
5179 /* Add it to the local scope */
5180 util_htset(vec_last(parser->variables), var->name, (void*)var);
5184 vec_last(parser->correct_variables),
5185 &vec_last(parser->correct_variables_score),
5189 /* now rename the global */
5190 ln = strlen(var->name);
5191 vec_append(defname, ln, var->name);
5192 ast_value_set_name(var, defname);
5194 /* push it to the to-be-generated globals */
5195 vec_push(parser->globals, (ast_expression*)var);
5197 /* same game for the vector members */
5199 for (i = 0; i < 3; ++i) {
5200 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5204 vec_last(parser->correct_variables),
5205 &vec_last(parser->correct_variables_score),
5209 vec_shrinkto(defname, prefix_len);
5210 ln = strlen(me[i]->name);
5211 vec_append(defname, ln, me[i]->name);
5212 ast_member_set_name(me[i], defname);
5214 vec_push(parser->globals, (ast_expression*)me[i]);
5219 vec_push(localblock->locals, var);
5220 parser_addlocal(parser, var->name, (ast_expression*)var);
5222 for (i = 0; i < 3; ++i) {
5223 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5224 ast_block_collect(localblock, (ast_expression*)me[i]);
5230 me[0] = me[1] = me[2] = NULL;
5235 if (var->expression.vtype == TYPE_ARRAY) {
5237 snprintf(name, sizeof(name), "%s##SET", var->name);
5238 if (!parser_create_array_setter(parser, var, name))
5240 snprintf(name, sizeof(name), "%s##GET", var->name);
5241 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5244 else if (!localblock && !nofields &&
5245 var->expression.vtype == TYPE_FIELD &&
5246 var->expression.next->expression.vtype == TYPE_ARRAY)
5249 ast_expression *telem;
5251 ast_value *array = (ast_value*)var->expression.next;
5253 if (!ast_istype(var->expression.next, ast_value)) {
5254 parseerror(parser, "internal error: field element type must be an ast_value");
5258 snprintf(name, sizeof(name), "%s##SETF", var->name);
5259 if (!parser_create_array_field_setter(parser, array, name))
5262 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5263 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5264 tfield->expression.next = telem;
5265 snprintf(name, sizeof(name), "%s##GETFP", var->name);
5266 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5274 if (parser->tok == ';') {
5275 ast_delete(basetype);
5276 if (!parser_next(parser)) {
5277 parseerror(parser, "error after variable declaration");
5283 if (parser->tok == ',')
5287 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5290 parseerror(parser, "missing comma or semicolon while parsing variables");
5294 if (localblock && opts.standard == COMPILER_QCC) {
5295 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5296 "initializing expression turns variable `%s` into a constant in this standard",
5303 if (parser->tok != '{') {
5304 if (parser->tok != '=') {
5305 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5309 if (!parser_next(parser)) {
5310 parseerror(parser, "error parsing initializer");
5314 else if (opts.standard == COMPILER_QCC) {
5315 parseerror(parser, "expected '=' before function body in this standard");
5318 if (parser->tok == '#') {
5319 ast_function *func = NULL;
5322 parseerror(parser, "cannot declare builtins within functions");
5325 if (var->expression.vtype != TYPE_FUNCTION) {
5326 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5329 if (!parser_next(parser)) {
5330 parseerror(parser, "expected builtin number");
5333 if (parser->tok != TOKEN_INTCONST) {
5334 parseerror(parser, "builtin number must be an integer constant");
5337 if (parser_token(parser)->constval.i < 0) {
5338 parseerror(parser, "builtin number must be an integer greater than zero");
5342 if (var->hasvalue) {
5343 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5344 "builtin `%s` has already been defined\n"
5345 " -> previous declaration here: %s:%i",
5346 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5350 func = ast_function_new(ast_ctx(var), var->name, var);
5352 parseerror(parser, "failed to allocate function for `%s`", var->name);
5355 vec_push(parser->functions, func);
5357 func->builtin = -parser_token(parser)->constval.i-1;
5360 if (!parser_next(parser)) {
5361 parseerror(parser, "expected comma or semicolon");
5363 ast_function_delete(func);
5364 var->constval.vfunc = NULL;
5368 else if (parser->tok == '{' || parser->tok == '[')
5371 parseerror(parser, "cannot declare functions within functions");
5376 ast_ctx(proto) = parser_ctx(parser);
5378 if (!parse_function_body(parser, var))
5380 ast_delete(basetype);
5381 for (i = 0; i < vec_size(parser->gotos); ++i)
5382 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5383 vec_free(parser->gotos);
5384 vec_free(parser->labels);
5387 ast_expression *cexp;
5390 cexp = parse_expression_leave(parser, true, false, false);
5395 cval = (ast_value*)cexp;
5396 if (cval != parser->nil &&
5397 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5400 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5404 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5405 qualifier != CV_VAR)
5407 var->cvq = CV_CONST;
5409 if (cval == parser->nil)
5410 var->expression.flags |= AST_FLAG_INITIALIZED;
5413 var->hasvalue = true;
5414 if (cval->expression.vtype == TYPE_STRING)
5415 var->constval.vstring = parser_strdup(cval->constval.vstring);
5416 else if (cval->expression.vtype == TYPE_FIELD)
5417 var->constval.vfield = cval;
5419 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5425 shunt sy = { NULL, NULL };
5428 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5429 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5430 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5431 if (!parser_sy_apply_operator(parser, &sy))
5434 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5435 parseerror(parser, "internal error: leaked operands");
5436 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5446 if (parser->tok == ',') {
5447 if (!parser_next(parser)) {
5448 parseerror(parser, "expected another variable");
5452 if (parser->tok != TOKEN_IDENT) {
5453 parseerror(parser, "expected another variable");
5456 var = ast_value_copy(basetype);
5458 ast_value_set_name(var, parser_tokval(parser));
5459 if (!parser_next(parser)) {
5460 parseerror(parser, "error parsing variable declaration");
5466 if (parser->tok != ';') {
5467 parseerror(parser, "missing semicolon after variables");
5471 if (!parser_next(parser)) {
5472 parseerror(parser, "parse error after variable declaration");
5476 ast_delete(basetype);
5480 if (cleanvar && var)
5482 ast_delete(basetype);
5486 ast_delete(basetype);
5487 if (cleanvar && var)
5489 if (me[0]) ast_member_delete(me[0]);
5490 if (me[1]) ast_member_delete(me[1]);
5491 if (me[2]) ast_member_delete(me[2]);
5495 static bool parser_global_statement(parser_t *parser)
5499 bool is_static = false;
5500 uint32_t qflags = 0;
5501 ast_value *istype = NULL;
5502 char *vstring = NULL;
5504 if (parser->tok == TOKEN_IDENT)
5505 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5507 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5509 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5511 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5513 if (cvq == CV_WRONG)
5515 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5517 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5519 return parse_enum(parser);
5521 else if (parser->tok == TOKEN_KEYWORD)
5523 if (!strcmp(parser_tokval(parser), "typedef")) {
5524 if (!parser_next(parser)) {
5525 parseerror(parser, "expected type definition after 'typedef'");
5528 return parse_typedef(parser);
5530 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5533 else if (parser->tok == '#')
5535 return parse_pragma(parser);
5537 else if (parser->tok == '$')
5539 if (!parser_next(parser)) {
5540 parseerror(parser, "parse error");
5546 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
5552 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5554 return util_crc16(old, str, strlen(str));
5557 static void progdefs_crc_file(const char *str)
5559 /* write to progdefs.h here */
5563 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5565 old = progdefs_crc_sum(old, str);
5566 progdefs_crc_file(str);
5570 static void generate_checksum(parser_t *parser)
5572 uint16_t crc = 0xFFFF;
5576 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5577 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5579 progdefs_crc_file("\tint\tpad;\n");
5580 progdefs_crc_file("\tint\tofs_return[3];\n");
5581 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5582 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5583 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5584 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5585 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5586 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5587 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5588 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5590 for (i = 0; i < parser->crc_globals; ++i) {
5591 if (!ast_istype(parser->globals[i], ast_value))
5593 value = (ast_value*)(parser->globals[i]);
5594 switch (value->expression.vtype) {
5595 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5596 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5597 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5598 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5600 crc = progdefs_crc_both(crc, "\tint\t");
5603 crc = progdefs_crc_both(crc, value->name);
5604 crc = progdefs_crc_both(crc, ";\n");
5606 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5607 for (i = 0; i < parser->crc_fields; ++i) {
5608 if (!ast_istype(parser->fields[i], ast_value))
5610 value = (ast_value*)(parser->fields[i]);
5611 switch (value->expression.next->expression.vtype) {
5612 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5613 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5614 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5615 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5617 crc = progdefs_crc_both(crc, "\tint\t");
5620 crc = progdefs_crc_both(crc, value->name);
5621 crc = progdefs_crc_both(crc, ";\n");
5623 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5628 static parser_t *parser;
5635 parser = (parser_t*)mem_a(sizeof(parser_t));
5639 memset(parser, 0, sizeof(*parser));
5641 for (i = 0; i < operator_count; ++i) {
5642 if (operators[i].id == opid1('=')) {
5643 parser->assign_op = operators+i;
5647 if (!parser->assign_op) {
5648 printf("internal error: initializing parser: failed to find assign operator\n");
5653 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5654 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5655 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5656 vec_push(parser->_blocktypedefs, 0);
5659 vec_push(parser->correct_variables, correct_trie_new());
5660 vec_push(parser->correct_variables_score, NULL);
5662 empty_ctx.file = "<internal>";
5664 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
5665 parser->nil->cvq = CV_CONST;
5666 if (OPTS_FLAG(UNTYPED_NIL))
5667 util_htset(parser->htglobals, "nil", (void*)parser->nil);
5669 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
5670 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
5671 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
5673 if (opts.add_info) {
5674 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
5675 parser->reserved_version->cvq = CV_CONST;
5676 parser->reserved_version->hasvalue = true;
5677 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
5678 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
5680 parser->reserved_version = NULL;
5685 bool parser_compile()
5687 /* initial lexer/parser state */
5688 parser->lex->flags.noops = true;
5690 if (parser_next(parser))
5692 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
5694 if (!parser_global_statement(parser)) {
5695 if (parser->tok == TOKEN_EOF)
5696 parseerror(parser, "unexpected eof");
5697 else if (compile_errors)
5698 parseerror(parser, "there have been errors, bailing out");
5699 lex_close(parser->lex);
5705 parseerror(parser, "parse error");
5706 lex_close(parser->lex);
5711 lex_close(parser->lex);
5714 return !compile_errors;
5717 bool parser_compile_file(const char *filename)
5719 parser->lex = lex_open(filename);
5721 con_err("failed to open file \"%s\"\n", filename);
5724 return parser_compile();
5727 bool parser_compile_string(const char *name, const char *str, size_t len)
5729 parser->lex = lex_open_string(str, len, name);
5731 con_err("failed to create lexer for string \"%s\"\n", name);
5734 return parser_compile();
5737 void parser_cleanup()
5740 for (i = 0; i < vec_size(parser->accessors); ++i) {
5741 ast_delete(parser->accessors[i]->constval.vfunc);
5742 parser->accessors[i]->constval.vfunc = NULL;
5743 ast_delete(parser->accessors[i]);
5745 for (i = 0; i < vec_size(parser->functions); ++i) {
5746 ast_delete(parser->functions[i]);
5748 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5749 ast_delete(parser->imm_vector[i]);
5751 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5752 ast_delete(parser->imm_string[i]);
5754 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5755 ast_delete(parser->imm_float[i]);
5757 for (i = 0; i < vec_size(parser->fields); ++i) {
5758 ast_delete(parser->fields[i]);
5760 for (i = 0; i < vec_size(parser->globals); ++i) {
5761 ast_delete(parser->globals[i]);
5763 vec_free(parser->accessors);
5764 vec_free(parser->functions);
5765 vec_free(parser->imm_vector);
5766 vec_free(parser->imm_string);
5767 vec_free(parser->imm_float);
5768 vec_free(parser->globals);
5769 vec_free(parser->fields);
5771 for (i = 0; i < vec_size(parser->variables); ++i)
5772 util_htdel(parser->variables[i]);
5773 vec_free(parser->variables);
5774 vec_free(parser->_blocklocals);
5775 vec_free(parser->_locals);
5778 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
5779 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
5781 vec_free(parser->correct_variables);
5782 vec_free(parser->correct_variables_score);
5785 for (i = 0; i < vec_size(parser->_typedefs); ++i)
5786 ast_delete(parser->_typedefs[i]);
5787 vec_free(parser->_typedefs);
5788 for (i = 0; i < vec_size(parser->typedefs); ++i)
5789 util_htdel(parser->typedefs[i]);
5790 vec_free(parser->typedefs);
5791 vec_free(parser->_blocktypedefs);
5793 vec_free(parser->_block_ctx);
5795 vec_free(parser->labels);
5796 vec_free(parser->gotos);
5797 vec_free(parser->breaks);
5798 vec_free(parser->continues);
5800 ast_value_delete(parser->nil);
5802 ast_value_delete(parser->const_vec[0]);
5803 ast_value_delete(parser->const_vec[1]);
5804 ast_value_delete(parser->const_vec[2]);
5809 bool parser_finish(const char *output)
5815 if (compile_errors) {
5816 con_out("*** there were compile errors\n");
5820 ir = ir_builder_new("gmqcc_out");
5822 con_out("failed to allocate builder\n");
5826 for (i = 0; i < vec_size(parser->fields); ++i) {
5829 if (!ast_istype(parser->fields[i], ast_value))
5831 field = (ast_value*)parser->fields[i];
5832 hasvalue = field->hasvalue;
5833 field->hasvalue = false;
5834 if (!ast_global_codegen((ast_value*)field, ir, true)) {
5835 con_out("failed to generate field %s\n", field->name);
5836 ir_builder_delete(ir);
5841 ast_expression *subtype;
5842 field->hasvalue = true;
5843 subtype = field->expression.next;
5844 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
5845 if (subtype->expression.vtype == TYPE_FIELD)
5846 ifld->fieldtype = subtype->expression.next->expression.vtype;
5847 else if (subtype->expression.vtype == TYPE_FUNCTION)
5848 ifld->outtype = subtype->expression.next->expression.vtype;
5849 (void)!ir_value_set_field(field->ir_v, ifld);
5852 for (i = 0; i < vec_size(parser->globals); ++i) {
5854 if (!ast_istype(parser->globals[i], ast_value))
5856 asvalue = (ast_value*)(parser->globals[i]);
5857 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
5858 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
5859 "unused global: `%s`", asvalue->name);
5861 if (!ast_global_codegen(asvalue, ir, false)) {
5862 con_out("failed to generate global %s\n", asvalue->name);
5863 ir_builder_delete(ir);
5867 /* Build function vararg accessor ast tree now before generating
5868 * immediates, because the accessors may add new immediates
5870 for (i = 0; i < vec_size(parser->functions); ++i) {
5871 ast_function *f = parser->functions[i];
5873 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
5874 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
5875 if (!parser_create_array_setter_impl(parser, f->varargs)) {
5876 con_out("failed to generate vararg setter for %s\n", f->name);
5877 ir_builder_delete(ir);
5880 if (!parser_create_array_getter_impl(parser, f->varargs)) {
5881 con_out("failed to generate vararg getter for %s\n", f->name);
5882 ir_builder_delete(ir);
5886 ast_delete(f->varargs);
5891 /* Now we can generate immediates */
5892 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5893 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
5894 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
5895 ir_builder_delete(ir);
5899 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5900 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
5901 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
5902 ir_builder_delete(ir);
5906 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5907 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
5908 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
5909 ir_builder_delete(ir);
5913 for (i = 0; i < vec_size(parser->globals); ++i) {
5915 if (!ast_istype(parser->globals[i], ast_value))
5917 asvalue = (ast_value*)(parser->globals[i]);
5918 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
5920 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
5921 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
5922 "uninitialized constant: `%s`",
5924 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
5925 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
5926 "uninitialized global: `%s`",
5929 if (!ast_generate_accessors(asvalue, ir)) {
5930 ir_builder_delete(ir);
5934 for (i = 0; i < vec_size(parser->fields); ++i) {
5936 asvalue = (ast_value*)(parser->fields[i]->expression.next);
5938 if (!ast_istype((ast_expression*)asvalue, ast_value))
5940 if (asvalue->expression.vtype != TYPE_ARRAY)
5942 if (!ast_generate_accessors(asvalue, ir)) {
5943 ir_builder_delete(ir);
5947 if (parser->reserved_version &&
5948 !ast_global_codegen(parser->reserved_version, ir, false))
5950 con_out("failed to generate reserved::version");
5951 ir_builder_delete(ir);
5954 for (i = 0; i < vec_size(parser->functions); ++i) {
5955 ast_function *f = parser->functions[i];
5956 if (!ast_function_codegen(f, ir)) {
5957 con_out("failed to generate function %s\n", f->name);
5958 ir_builder_delete(ir);
5963 ir_builder_dump(ir, con_out);
5964 for (i = 0; i < vec_size(parser->functions); ++i) {
5965 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
5966 con_out("failed to finalize function %s\n", parser->functions[i]->name);
5967 ir_builder_delete(ir);
5972 if (compile_Werrors) {
5973 con_out("*** there were warnings treated as errors\n");
5974 compile_show_werrors();
5980 ir_builder_dump(ir, con_out);
5982 generate_checksum(parser);
5984 if (!ir_builder_generate(ir, output)) {
5985 con_out("*** failed to generate output file\n");
5986 ir_builder_delete(ir);
5991 ir_builder_delete(ir);