2 * Copyright (C) 2012, 2013
6 * Permission is hereby granted, free of charge, to any person obtaining a copy of
7 * this software and associated documentation files (the "Software"), to deal in
8 * the Software without restriction, including without limitation the rights to
9 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
10 * of the Software, and to permit persons to whom the Software is furnished to do
11 * so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 /* beginning of locals */
32 #define PARSER_HT_LOCALS 2
34 #define PARSER_HT_SIZE 1024
35 #define TYPEDEF_HT_SIZE 16
37 enum parser_pot { POT_PAREN, POT_TERNARY1, POT_TERNARY2 };
42 ast_expression **globals;
43 ast_expression **fields;
44 ast_function **functions;
45 ast_value **imm_float;
46 ast_value **imm_string;
47 ast_value **imm_vector;
50 /* must be deleted first, they reference immediates and values */
51 ast_value **accessors;
53 ast_value *imm_float_zero;
54 ast_value *imm_float_one;
55 ast_value *imm_vector_zero;
57 ast_value *reserved_version;
62 ast_function *function;
64 /* All the labels the function defined...
65 * Should they be in ast_function instead?
70 const char **continues;
72 /* A list of hashtables for each scope */
78 /* same as above but for the spelling corrector */
79 correct_trie_t **correct_variables;
80 size_t ***correct_variables_score; /* vector of vector of size_t* */
82 /* not to be used directly, we use the hash table */
83 ast_expression **_locals;
85 ast_value **_typedefs;
86 size_t *_blocktypedefs;
89 /* we store the '=' operator info */
90 const oper_info *assign_op;
92 /* Keep track of our ternary vs parenthesis nesting state.
93 * If we reach a 'comma' operator in a ternary without a paren,
94 * we shall trigger -Wternary-precedence.
99 ast_value *const_vec[3];
104 /* collected information */
105 size_t max_param_count;
108 static 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 parseerror(parser, "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 parseerror(parser, "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 parseerror(parser, "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 parseerror(parser, "access to invalid vector component");
617 else if (exprs[0]->expression.vtype == TYPE_ENTITY) {
618 if (exprs[1]->expression.vtype != TYPE_FIELD) {
619 parseerror(parser, "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 parseerror(parser, "vectors cannot be accessed this way");
629 parseerror(parser, "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 parseerror(parser, "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 parseerror(parser, "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 parseerror(parser, "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 parseerror(parser, "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 parseerror(parser, "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 parseerror(parser, "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 parseerror(parser, "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 parseerror(parser, "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 parseerror(parser, "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 parseerror(parser, "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 parseerror(parser, "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 parseerror(parser, "qc does not have a modulo operator");
941 if (NotSameType(TYPE_FLOAT)) {
942 parseerror(parser, "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;
979 if (NotSameType(TYPE_FLOAT)) {
980 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
981 type_name[exprs[0]->expression.vtype],
982 type_name[exprs[1]->expression.vtype]);
983 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
984 parseerror(parser, "TODO: optional early out");
988 if (CanConstFold(exprs[0], exprs[1]))
990 if (OPTS_FLAG(PERL_LOGIC)) {
991 if (immediate_is_true(ctx, asvalue[0]))
995 out = (ast_expression*)parser_const_float(parser,
996 ( (generated_op == INSTR_OR)
997 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
998 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
1003 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
1004 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1005 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1006 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
1009 for (i = 0; i < 2; ++i) {
1010 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->expression.vtype == TYPE_VECTOR) {
1011 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
1013 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1015 exprs[i] = out; out = NULL;
1016 if (OPTS_FLAG(PERL_LOGIC)) {
1017 /* here we want to keep the right expressions' type */
1021 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->expression.vtype == TYPE_STRING) {
1022 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
1024 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1026 exprs[i] = out; out = NULL;
1027 if (OPTS_FLAG(PERL_LOGIC)) {
1028 /* here we want to keep the right expressions' type */
1033 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1037 case opid2('?',':'):
1038 if (vec_last(parser->pot) != POT_TERNARY2) {
1039 parseerror(parser, "mismatched parenthesis/ternary");
1042 vec_pop(parser->pot);
1043 if (!ast_compare_type(exprs[1], exprs[2])) {
1044 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
1045 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
1046 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
1049 if (CanConstFold1(exprs[0]))
1050 out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
1052 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
1056 generated_op += 1; /* INSTR_GT */
1058 generated_op += 1; /* INSTR_LT */
1059 case opid2('>', '='):
1060 generated_op += 1; /* INSTR_GE */
1061 case opid2('<', '='):
1062 generated_op += INSTR_LE;
1063 if (NotSameType(TYPE_FLOAT)) {
1064 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1065 type_name[exprs[0]->expression.vtype],
1066 type_name[exprs[1]->expression.vtype]);
1069 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1071 case opid2('!', '='):
1072 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1073 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1074 type_name[exprs[0]->expression.vtype],
1075 type_name[exprs[1]->expression.vtype]);
1078 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1080 case opid2('=', '='):
1081 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1082 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1083 type_name[exprs[0]->expression.vtype],
1084 type_name[exprs[1]->expression.vtype]);
1087 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1091 if (ast_istype(exprs[0], ast_entfield)) {
1092 ast_expression *field = ((ast_entfield*)exprs[0])->field;
1093 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1094 exprs[0]->expression.vtype == TYPE_FIELD &&
1095 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1097 assignop = type_storep_instr[TYPE_VECTOR];
1100 assignop = type_storep_instr[exprs[0]->expression.vtype];
1101 if (assignop == AINSTR_END || !ast_compare_type(field->expression.next, exprs[1]))
1103 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
1104 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1105 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1106 field->expression.next->expression.vtype == TYPE_FUNCTION &&
1107 exprs[1]->expression.vtype == TYPE_FUNCTION)
1109 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1110 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1113 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1118 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1119 exprs[0]->expression.vtype == TYPE_FIELD &&
1120 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1122 assignop = type_store_instr[TYPE_VECTOR];
1125 assignop = type_store_instr[exprs[0]->expression.vtype];
1128 if (assignop == AINSTR_END) {
1129 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1130 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1131 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1133 else if (!ast_compare_type(exprs[0], exprs[1]))
1135 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1136 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1137 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1138 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1139 exprs[1]->expression.vtype == TYPE_FUNCTION)
1141 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1142 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1145 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1148 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1149 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1151 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1153 case opid3('+','+','P'):
1154 case opid3('-','-','P'):
1156 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1157 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1158 parseerror(parser, "invalid type for prefix increment: %s", ty1);
1161 if (op->id == opid3('+','+','P'))
1162 addop = INSTR_ADD_F;
1164 addop = INSTR_SUB_F;
1165 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1166 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1168 if (ast_istype(exprs[0], ast_entfield)) {
1169 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1171 (ast_expression*)parser_const_float_1(parser));
1173 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1175 (ast_expression*)parser_const_float_1(parser));
1178 case opid3('S','+','+'):
1179 case opid3('S','-','-'):
1181 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1182 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1183 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1186 if (op->id == opid3('S','+','+')) {
1187 addop = INSTR_ADD_F;
1188 subop = INSTR_SUB_F;
1190 addop = INSTR_SUB_F;
1191 subop = INSTR_ADD_F;
1193 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1194 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1196 if (ast_istype(exprs[0], ast_entfield)) {
1197 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1199 (ast_expression*)parser_const_float_1(parser));
1201 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1203 (ast_expression*)parser_const_float_1(parser));
1207 out = (ast_expression*)ast_binary_new(ctx, subop,
1209 (ast_expression*)parser_const_float_1(parser));
1211 case opid2('+','='):
1212 case opid2('-','='):
1213 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1214 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1216 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1217 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1218 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1222 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1223 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1225 if (ast_istype(exprs[0], ast_entfield))
1226 assignop = type_storep_instr[exprs[0]->expression.vtype];
1228 assignop = type_store_instr[exprs[0]->expression.vtype];
1229 switch (exprs[0]->expression.vtype) {
1231 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1232 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1233 exprs[0], exprs[1]);
1236 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1237 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1238 exprs[0], exprs[1]);
1241 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1242 type_name[exprs[0]->expression.vtype],
1243 type_name[exprs[1]->expression.vtype]);
1247 case opid2('*','='):
1248 case opid2('/','='):
1249 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1250 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1251 exprs[0]->expression.vtype == TYPE_VECTOR))
1253 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1254 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1255 parseerror(parser, "invalid types used in expression: %s and %s",
1259 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1260 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1262 if (ast_istype(exprs[0], ast_entfield))
1263 assignop = type_storep_instr[exprs[0]->expression.vtype];
1265 assignop = type_store_instr[exprs[0]->expression.vtype];
1266 switch (exprs[0]->expression.vtype) {
1268 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1269 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1270 exprs[0], exprs[1]);
1273 if (op->id == opid2('*','=')) {
1274 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1275 exprs[0], exprs[1]);
1277 /* there's no DIV_VF */
1278 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1279 (ast_expression*)parser_const_float_1(parser),
1283 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1288 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1289 type_name[exprs[0]->expression.vtype],
1290 type_name[exprs[1]->expression.vtype]);
1294 case opid2('&','='):
1295 case opid2('|','='):
1296 if (NotSameType(TYPE_FLOAT)) {
1297 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1298 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1299 parseerror(parser, "invalid types used in expression: %s and %s",
1303 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1304 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1306 if (ast_istype(exprs[0], ast_entfield))
1307 assignop = type_storep_instr[exprs[0]->expression.vtype];
1309 assignop = type_store_instr[exprs[0]->expression.vtype];
1310 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1311 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1312 exprs[0], exprs[1]);
1314 case opid3('&','~','='):
1315 /* This is like: a &= ~(b);
1316 * But QC has no bitwise-not, so we implement it as
1319 if (NotSameType(TYPE_FLOAT)) {
1320 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1321 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1322 parseerror(parser, "invalid types used in expression: %s and %s",
1326 if (ast_istype(exprs[0], ast_entfield))
1327 assignop = type_storep_instr[exprs[0]->expression.vtype];
1329 assignop = type_store_instr[exprs[0]->expression.vtype];
1330 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1333 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1334 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1336 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1337 asbinstore->keep_dest = true;
1338 out = (ast_expression*)asbinstore;
1344 parseerror(parser, "failed to apply operand %s", op->op);
1348 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1349 vec_push(sy->out, syexp(ctx, out));
1353 static bool parser_close_call(parser_t *parser, shunt *sy)
1355 /* was a function call */
1356 ast_expression *fun;
1357 ast_value *funval = NULL;
1363 vec_shrinkby(sy->ops, 1);
1364 fid = sy->ops[vec_size(sy->ops)].off;
1366 /* out[fid] is the function
1367 * everything above is parameters...
1368 * 0 params = nothing
1369 * 1 params = ast_expression
1373 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1374 parseerror(parser, "internal error: function call needs function and parameter list...");
1378 fun = sy->out[fid].out;
1380 if (fun == intrinsic_debug_typestring) {
1382 if (fid+2 != vec_size(sy->out) ||
1383 vec_last(sy->out).block)
1385 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1388 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1389 ast_unref(vec_last(sy->out).out);
1390 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1391 (ast_expression*)parser_const_string(parser, ty, false));
1392 vec_shrinkby(sy->out, 1);
1396 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1398 parseerror(parser, "internal error: failed to create ast_call node");
1402 if (fid+1 == vec_size(sy->out)) {
1405 } else if (fid+2 == vec_size(sy->out)) {
1407 vec_shrinkby(sy->out, 1);
1408 params = sy->out[vec_size(sy->out)].block;
1412 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1414 paramcount = vec_size(params->exprs);
1415 call->params = params->exprs;
1416 params->exprs = NULL;
1419 if (parser->max_param_count < paramcount)
1420 parser->max_param_count = paramcount;
1421 (void)!ast_call_check_types(call);
1423 parseerror(parser, "invalid function call");
1427 if (ast_istype(fun, ast_value)) {
1428 funval = (ast_value*)fun;
1429 if ((fun->expression.flags & AST_FLAG_VARIADIC) &&
1430 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1433 if (paramcount < vec_size(fun->expression.params))
1436 va_count = paramcount - vec_size(fun->expression.params);
1437 call->va_count = (ast_expression*)parser_const_float(parser, (double)va_count);
1441 /* overwrite fid, the function, with a call */
1442 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1444 if (fun->expression.vtype != TYPE_FUNCTION) {
1445 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1449 if (!fun->expression.next) {
1450 parseerror(parser, "could not determine function return type");
1453 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1455 if (fun->expression.flags & AST_FLAG_DEPRECATED) {
1457 return !parsewarning(parser, WARN_DEPRECATED,
1458 "call to function (which is marked deprecated)\n",
1459 "-> it has been declared here: %s:%i",
1460 ast_ctx(fun).file, ast_ctx(fun).line);
1463 return !parsewarning(parser, WARN_DEPRECATED,
1464 "call to `%s` (which is marked deprecated)\n"
1465 "-> `%s` declared here: %s:%i",
1466 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1468 return !parsewarning(parser, WARN_DEPRECATED,
1469 "call to `%s` (deprecated: %s)\n"
1470 "-> `%s` declared here: %s:%i",
1471 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1475 if (vec_size(fun->expression.params) != paramcount &&
1476 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1477 vec_size(fun->expression.params) < paramcount))
1479 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1481 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1482 "too %s parameters for call to %s: expected %i, got %i\n"
1483 " -> `%s` has been declared here: %s:%i",
1484 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1485 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1487 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1488 "too %s parameters for function call: expected %i, got %i\n"
1489 " -> it has been declared here: %s:%i",
1490 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1491 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1498 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1500 if (!vec_size(sy->ops)) {
1501 parseerror(parser, "unmatched closing paren");
1504 /* this would for bit a + (x) because there are no operators inside (x)
1505 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1506 parseerror(parser, "empty parenthesis expression");
1510 while (vec_size(sy->ops)) {
1511 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1512 if (!parser_close_call(parser, sy))
1516 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1517 vec_shrinkby(sy->ops, 1);
1518 return !functions_only;
1520 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1523 /* pop off the parenthesis */
1524 vec_shrinkby(sy->ops, 1);
1525 /* then apply the index operator */
1526 if (!parser_sy_apply_operator(parser, sy))
1530 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1533 if (vec_last(parser->pot) != POT_TERNARY1) {
1534 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1537 vec_last(parser->pot) = POT_TERNARY2;
1538 /* pop off the parenthesis */
1539 vec_shrinkby(sy->ops, 1);
1542 if (!parser_sy_apply_operator(parser, sy))
1548 static void parser_reclassify_token(parser_t *parser)
1551 for (i = 0; i < operator_count; ++i) {
1552 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1553 parser->tok = TOKEN_OPERATOR;
1559 static ast_expression* parse_vararg_do(parser_t *parser)
1561 ast_expression *idx, *out;
1563 ast_value *funtype = parser->function->vtype;
1565 lex_ctx ctx = parser_ctx(parser);
1567 if (!parser_next(parser) || parser->tok != '(') {
1568 parseerror(parser, "expected parameter index and type in parenthesis");
1571 if (!parser_next(parser)) {
1572 parseerror(parser, "error parsing parameter index");
1576 idx = parse_expression_leave(parser, true, false, false);
1580 if (parser->tok != ',') {
1582 parseerror(parser, "expected comma after parameter index");
1586 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1588 parseerror(parser, "expected typename for vararg");
1592 typevar = parse_typename(parser, NULL, NULL);
1598 if (parser->tok != ')') {
1600 ast_delete(typevar);
1601 parseerror(parser, "expected closing paren");
1606 if (!parser_next(parser)) {
1608 ast_delete(typevar);
1609 parseerror(parser, "parse error after vararg");
1614 if (!parser->function->varargs) {
1616 ast_delete(typevar);
1617 parseerror(parser, "function has no variable argument list");
1621 if (funtype->expression.varparam &&
1622 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1626 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1627 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1628 compile_error(ast_ctx(typevar),
1629 "function was declared to take varargs of type `%s`, requested type is: %s",
1633 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1634 ast_type_adopt(out, typevar);
1635 ast_delete(typevar);
1639 static ast_expression* parse_vararg(parser_t *parser)
1641 bool old_noops = parser->lex->flags.noops;
1642 enum parser_pot *old_pot = parser->pot;
1644 ast_expression *out;
1647 parser->lex->flags.noops = true;
1648 out = parse_vararg_do(parser);
1650 parser->pot = old_pot;
1651 parser->lex->flags.noops = old_noops;
1655 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1657 ast_expression *expr = NULL;
1659 bool wantop = false;
1660 /* only warn once about an assignment in a truth value because the current code
1661 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1663 bool warn_truthvalue = true;
1665 /* count the parens because an if starts with one, so the
1666 * end of a condition is an unmatched closing paren
1674 parser->lex->flags.noops = false;
1676 parser_reclassify_token(parser);
1680 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1681 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1683 /* a translatable string */
1687 parseerror(parser, "expected operator or end of statement, got constant");
1691 parser->lex->flags.noops = true;
1692 if (!parser_next(parser) || parser->tok != '(') {
1693 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1696 parser->lex->flags.noops = false;
1697 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1698 parseerror(parser, "expected a constant string in translatable-string extension");
1701 val = parser_const_string(parser, parser_tokval(parser), true);
1705 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1706 DEBUGSHUNTDO(con_out("push string\n"));
1708 if (!parser_next(parser) || parser->tok != ')') {
1709 parseerror(parser, "expected closing paren after translatable string");
1713 else if (parser->tok == TOKEN_DOTS)
1716 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1717 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1721 parseerror(parser, "expected operator or end of statement");
1725 va = parse_vararg(parser);
1728 vec_push(sy.out, syexp(parser_ctx(parser), va));
1729 DEBUGSHUNTDO(con_out("push `...`\n"));
1731 else if (parser->tok == TOKEN_IDENT)
1733 const char *ctoken = parser_tokval(parser);
1734 ast_expression *prev = vec_size(sy.out) ? vec_last(sy.out).out : NULL;
1735 ast_expression *var;
1737 parseerror(parser, "expected operator or end of statement");
1741 /* a_vector.{x,y,z} */
1742 if (!vec_size(sy.ops) ||
1743 !vec_last(sy.ops).etype ||
1744 operators[vec_last(sy.ops).etype-1].id != opid1('.') ||
1745 (prev >= intrinsic_debug_typestring &&
1746 prev <= intrinsic_debug_typestring))
1748 /* When adding more intrinsics, fix the above condition */
1751 if (prev && prev->expression.vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1753 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1755 var = parser_find_var(parser, parser_tokval(parser));
1757 var = parser_find_field(parser, parser_tokval(parser));
1759 if (!var && with_labels) {
1760 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1762 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1763 var = (ast_expression*)lbl;
1764 vec_push(parser->labels, lbl);
1769 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1770 var = (ast_expression*)intrinsic_debug_typestring;
1775 char *correct = NULL;
1778 * sometimes people use preprocessing predefs without enabling them
1779 * i've done this thousands of times already myself. Lets check for
1780 * it in the predef table. And diagnose it better :)
1782 if (!OPTS_FLAG(FTEPP_PREDEFS)) {
1783 for (i = 0; i < sizeof(ftepp_predefs)/sizeof(*ftepp_predefs); i++) {
1784 if (!strcmp(ftepp_predefs[i].name, parser_tokval(parser))) {
1785 parseerror(parser, "unexpected ident: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1792 * TODO: determine the best score for the identifier: be it
1793 * a variable, a field.
1795 * We should also consider adding correction tables for
1796 * other things as well.
1798 if (OPTS_FLAG(ENHANCED_DIAGNOSTICS)) {
1800 correct_init(&corr);
1802 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1803 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1804 if (strcmp(correct, parser_tokval(parser))) {
1806 } else if (correct) {
1811 correct_free(&corr);
1814 parseerror(parser, "unexpected ident: %s (did you mean %s?)", parser_tokval(parser), correct);
1819 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1825 if (ast_istype(var, ast_value)) {
1826 ((ast_value*)var)->uses++;
1828 else if (ast_istype(var, ast_member)) {
1829 ast_member *mem = (ast_member*)var;
1830 if (ast_istype(mem->owner, ast_value))
1831 ((ast_value*)(mem->owner))->uses++;
1834 vec_push(sy.out, syexp(parser_ctx(parser), var));
1835 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1837 else if (parser->tok == TOKEN_FLOATCONST) {
1840 parseerror(parser, "expected operator or end of statement, got constant");
1844 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1847 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1848 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1850 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1853 parseerror(parser, "expected operator or end of statement, got constant");
1857 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1860 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1861 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1863 else if (parser->tok == TOKEN_STRINGCONST) {
1866 parseerror(parser, "expected operator or end of statement, got constant");
1870 val = parser_const_string(parser, parser_tokval(parser), false);
1873 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1874 DEBUGSHUNTDO(con_out("push string\n"));
1876 else if (parser->tok == TOKEN_VECTORCONST) {
1879 parseerror(parser, "expected operator or end of statement, got constant");
1883 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1886 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1887 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1888 parser_token(parser)->constval.v.x,
1889 parser_token(parser)->constval.v.y,
1890 parser_token(parser)->constval.v.z));
1892 else if (parser->tok == '(') {
1893 parseerror(parser, "internal error: '(' should be classified as operator");
1896 else if (parser->tok == '[') {
1897 parseerror(parser, "internal error: '[' should be classified as operator");
1900 else if (parser->tok == ')') {
1902 DEBUGSHUNTDO(con_out("do[op] )\n"));
1906 /* we do expect an operator next */
1907 /* closing an opening paren */
1908 if (!parser_close_paren(parser, &sy, false))
1910 if (vec_last(parser->pot) != POT_PAREN) {
1911 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1914 vec_pop(parser->pot);
1916 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1920 /* allowed for function calls */
1921 if (!parser_close_paren(parser, &sy, true))
1923 if (vec_last(parser->pot) != POT_PAREN) {
1924 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1927 vec_pop(parser->pot);
1931 else if (parser->tok == ']') {
1933 parseerror(parser, "operand expected");
1937 if (!parser_close_paren(parser, &sy, false))
1939 if (vec_last(parser->pot) != POT_PAREN) {
1940 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1943 vec_pop(parser->pot);
1946 else if (parser->tok == TOKEN_TYPENAME) {
1947 parseerror(parser, "unexpected typename");
1950 else if (parser->tok != TOKEN_OPERATOR) {
1952 parseerror(parser, "expected operator or end of statement");
1959 /* classify the operator */
1960 const oper_info *op;
1961 const oper_info *olast = NULL;
1963 for (o = 0; o < operator_count; ++o) {
1964 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1965 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1966 !strcmp(parser_tokval(parser), operators[o].op))
1971 if (o == operator_count) {
1972 /* no operator found... must be the end of the statement */
1975 /* found an operator */
1978 /* when declaring variables, a comma starts a new variable */
1979 if (op->id == opid1(',') && !parens && stopatcomma) {
1980 /* fixup the token */
1985 /* a colon without a pervious question mark cannot be a ternary */
1986 if (!ternaries && op->id == opid2(':','?')) {
1991 if (op->id == opid1(',')) {
1992 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1993 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1997 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1998 olast = &operators[vec_last(sy.ops).etype-1];
2000 #define IsAssignOp(x) (\
2001 (x) == opid1('=') || \
2002 (x) == opid2('+','=') || \
2003 (x) == opid2('-','=') || \
2004 (x) == opid2('*','=') || \
2005 (x) == opid2('/','=') || \
2006 (x) == opid2('%','=') || \
2007 (x) == opid2('&','=') || \
2008 (x) == opid2('|','=') || \
2009 (x) == opid3('&','~','=') \
2011 if (warn_truthvalue) {
2012 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
2013 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
2014 (truthvalue && !vec_size(parser->pot) && IsAssignOp(op->id))
2017 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
2018 warn_truthvalue = false;
2023 (op->prec < olast->prec) ||
2024 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
2026 if (!parser_sy_apply_operator(parser, &sy))
2028 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
2029 olast = &operators[vec_last(sy.ops).etype-1];
2034 if (op->id == opid1('(')) {
2036 size_t sycount = vec_size(sy.out);
2037 DEBUGSHUNTDO(con_out("push [op] (\n"));
2038 ++parens; vec_push(parser->pot, POT_PAREN);
2039 /* we expected an operator, this is the function-call operator */
2040 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
2042 ++parens; vec_push(parser->pot, POT_PAREN);
2043 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
2044 DEBUGSHUNTDO(con_out("push [nop] (\n"));
2047 } else if (op->id == opid1('[')) {
2049 parseerror(parser, "unexpected array subscript");
2052 ++parens; vec_push(parser->pot, POT_PAREN);
2053 /* push both the operator and the paren, this makes life easier */
2054 vec_push(sy.ops, syop(parser_ctx(parser), op));
2055 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
2057 } else if (op->id == opid2('?',':')) {
2058 vec_push(sy.ops, syop(parser_ctx(parser), op));
2059 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
2062 vec_push(parser->pot, POT_TERNARY1);
2063 } else if (op->id == opid2(':','?')) {
2064 if (!vec_size(parser->pot)) {
2065 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2068 if (vec_last(parser->pot) != POT_TERNARY1) {
2069 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
2072 if (!parser_close_paren(parser, &sy, false))
2074 vec_push(sy.ops, syop(parser_ctx(parser), op));
2078 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
2079 vec_push(sy.ops, syop(parser_ctx(parser), op));
2080 wantop = !!(op->flags & OP_SUFFIX);
2083 if (!parser_next(parser)) {
2086 if (parser->tok == ';' ||
2087 (!parens && (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
2093 while (vec_size(sy.ops)) {
2094 if (!parser_sy_apply_operator(parser, &sy))
2098 parser->lex->flags.noops = true;
2099 if (!vec_size(sy.out)) {
2100 parseerror(parser, "empty expression");
2103 expr = sy.out[0].out;
2106 DEBUGSHUNTDO(con_out("shunt done\n"));
2107 if (vec_size(parser->pot)) {
2108 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
2111 vec_free(parser->pot);
2115 parser->lex->flags.noops = true;
2121 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
2123 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
2126 if (parser->tok != ';') {
2127 parseerror(parser, "semicolon expected after expression");
2131 if (!parser_next(parser)) {
2138 static void parser_enterblock(parser_t *parser)
2140 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2141 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2142 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2143 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2144 vec_push(parser->_block_ctx, parser_ctx(parser));
2147 vec_push(parser->correct_variables, correct_trie_new());
2148 vec_push(parser->correct_variables_score, NULL);
2151 static bool parser_leaveblock(parser_t *parser)
2154 size_t locals, typedefs;
2156 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2157 parseerror(parser, "internal error: parser_leaveblock with no block");
2161 util_htdel(vec_last(parser->variables));
2162 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2164 vec_pop(parser->variables);
2165 vec_pop(parser->correct_variables);
2166 vec_pop(parser->correct_variables_score);
2167 if (!vec_size(parser->_blocklocals)) {
2168 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2172 locals = vec_last(parser->_blocklocals);
2173 vec_pop(parser->_blocklocals);
2174 while (vec_size(parser->_locals) != locals) {
2175 ast_expression *e = vec_last(parser->_locals);
2176 ast_value *v = (ast_value*)e;
2177 vec_pop(parser->_locals);
2178 if (ast_istype(e, ast_value) && !v->uses) {
2179 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2184 typedefs = vec_last(parser->_blocktypedefs);
2185 while (vec_size(parser->_typedefs) != typedefs) {
2186 ast_delete(vec_last(parser->_typedefs));
2187 vec_pop(parser->_typedefs);
2189 util_htdel(vec_last(parser->typedefs));
2190 vec_pop(parser->typedefs);
2192 vec_pop(parser->_block_ctx);
2197 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2199 vec_push(parser->_locals, e);
2200 util_htset(vec_last(parser->variables), name, (void*)e);
2204 vec_last(parser->correct_variables),
2205 &vec_last(parser->correct_variables_score),
2210 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2212 vec_push(parser->globals, e);
2213 util_htset(parser->htglobals, name, e);
2217 parser->correct_variables[0],
2218 &parser->correct_variables_score[0],
2223 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2227 ast_expression *prev;
2229 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
2232 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2235 parseerror(parser, "internal error: failed to process condition");
2240 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
2242 /* vector types need to be cast to true booleans */
2243 ast_binary *bin = (ast_binary*)cond;
2244 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2246 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2248 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2251 parseerror(parser, "internal error: failed to process condition");
2258 unary = (ast_unary*)cond;
2259 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2261 cond = unary->operand;
2262 unary->operand = NULL;
2265 unary = (ast_unary*)cond;
2269 parseerror(parser, "internal error: failed to process condition");
2271 if (ifnot) *_ifnot = !*_ifnot;
2275 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2278 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2281 lex_ctx ctx = parser_ctx(parser);
2283 (void)block; /* not touching */
2285 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2286 if (!parser_next(parser)) {
2287 parseerror(parser, "expected condition or 'not'");
2290 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2292 if (!parser_next(parser)) {
2293 parseerror(parser, "expected condition in parenthesis");
2297 if (parser->tok != '(') {
2298 parseerror(parser, "expected 'if' condition in parenthesis");
2301 /* parse into the expression */
2302 if (!parser_next(parser)) {
2303 parseerror(parser, "expected 'if' condition after opening paren");
2306 /* parse the condition */
2307 cond = parse_expression_leave(parser, false, true, false);
2311 if (parser->tok != ')') {
2312 parseerror(parser, "expected closing paren after 'if' condition");
2316 /* parse into the 'then' branch */
2317 if (!parser_next(parser)) {
2318 parseerror(parser, "expected statement for on-true branch of 'if'");
2322 if (!parse_statement_or_block(parser, &ontrue)) {
2327 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2328 /* check for an else */
2329 if (!strcmp(parser_tokval(parser), "else")) {
2330 /* parse into the 'else' branch */
2331 if (!parser_next(parser)) {
2332 parseerror(parser, "expected on-false branch after 'else'");
2337 if (!parse_statement_or_block(parser, &onfalse)) {
2344 cond = process_condition(parser, cond, &ifnot);
2346 if (ontrue) ast_delete(ontrue);
2347 if (onfalse) ast_delete(onfalse);
2352 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2354 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2355 *out = (ast_expression*)ifthen;
2359 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2360 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2365 /* skip the 'while' and get the body */
2366 if (!parser_next(parser)) {
2367 if (OPTS_FLAG(LOOP_LABELS))
2368 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2370 parseerror(parser, "expected 'while' condition in parenthesis");
2374 if (parser->tok == ':') {
2375 if (!OPTS_FLAG(LOOP_LABELS))
2376 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2377 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2378 parseerror(parser, "expected loop label");
2381 label = util_strdup(parser_tokval(parser));
2382 if (!parser_next(parser)) {
2384 parseerror(parser, "expected 'while' condition in parenthesis");
2389 if (parser->tok != '(') {
2390 parseerror(parser, "expected 'while' condition in parenthesis");
2394 vec_push(parser->breaks, label);
2395 vec_push(parser->continues, label);
2397 rv = parse_while_go(parser, block, out);
2400 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2401 parseerror(parser, "internal error: label stack corrupted");
2407 vec_pop(parser->breaks);
2408 vec_pop(parser->continues);
2413 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2416 ast_expression *cond, *ontrue;
2420 lex_ctx ctx = parser_ctx(parser);
2422 (void)block; /* not touching */
2424 /* parse into the expression */
2425 if (!parser_next(parser)) {
2426 parseerror(parser, "expected 'while' condition after opening paren");
2429 /* parse the condition */
2430 cond = parse_expression_leave(parser, false, true, false);
2434 if (parser->tok != ')') {
2435 parseerror(parser, "expected closing paren after 'while' condition");
2439 /* parse into the 'then' branch */
2440 if (!parser_next(parser)) {
2441 parseerror(parser, "expected while-loop body");
2445 if (!parse_statement_or_block(parser, &ontrue)) {
2450 cond = process_condition(parser, cond, &ifnot);
2455 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2456 *out = (ast_expression*)aloop;
2460 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2461 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2466 /* skip the 'do' and get the body */
2467 if (!parser_next(parser)) {
2468 if (OPTS_FLAG(LOOP_LABELS))
2469 parseerror(parser, "expected loop label or body");
2471 parseerror(parser, "expected loop body");
2475 if (parser->tok == ':') {
2476 if (!OPTS_FLAG(LOOP_LABELS))
2477 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2478 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2479 parseerror(parser, "expected loop label");
2482 label = util_strdup(parser_tokval(parser));
2483 if (!parser_next(parser)) {
2485 parseerror(parser, "expected loop body");
2490 vec_push(parser->breaks, label);
2491 vec_push(parser->continues, label);
2493 rv = parse_dowhile_go(parser, block, out);
2496 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2497 parseerror(parser, "internal error: label stack corrupted");
2503 vec_pop(parser->breaks);
2504 vec_pop(parser->continues);
2509 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2512 ast_expression *cond, *ontrue;
2516 lex_ctx ctx = parser_ctx(parser);
2518 (void)block; /* not touching */
2520 if (!parse_statement_or_block(parser, &ontrue))
2523 /* expect the "while" */
2524 if (parser->tok != TOKEN_KEYWORD ||
2525 strcmp(parser_tokval(parser), "while"))
2527 parseerror(parser, "expected 'while' and condition");
2532 /* skip the 'while' and check for opening paren */
2533 if (!parser_next(parser) || parser->tok != '(') {
2534 parseerror(parser, "expected 'while' condition in parenthesis");
2538 /* parse into the expression */
2539 if (!parser_next(parser)) {
2540 parseerror(parser, "expected 'while' condition after opening paren");
2544 /* parse the condition */
2545 cond = parse_expression_leave(parser, false, true, false);
2549 if (parser->tok != ')') {
2550 parseerror(parser, "expected closing paren after 'while' condition");
2556 if (!parser_next(parser) || parser->tok != ';') {
2557 parseerror(parser, "expected semicolon after condition");
2563 if (!parser_next(parser)) {
2564 parseerror(parser, "parse error");
2570 cond = process_condition(parser, cond, &ifnot);
2575 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2576 *out = (ast_expression*)aloop;
2580 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2581 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2586 /* skip the 'for' and check for opening paren */
2587 if (!parser_next(parser)) {
2588 if (OPTS_FLAG(LOOP_LABELS))
2589 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2591 parseerror(parser, "expected 'for' expressions in parenthesis");
2595 if (parser->tok == ':') {
2596 if (!OPTS_FLAG(LOOP_LABELS))
2597 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2598 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2599 parseerror(parser, "expected loop label");
2602 label = util_strdup(parser_tokval(parser));
2603 if (!parser_next(parser)) {
2605 parseerror(parser, "expected 'for' expressions in parenthesis");
2610 if (parser->tok != '(') {
2611 parseerror(parser, "expected 'for' expressions in parenthesis");
2615 vec_push(parser->breaks, label);
2616 vec_push(parser->continues, label);
2618 rv = parse_for_go(parser, block, out);
2621 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2622 parseerror(parser, "internal error: label stack corrupted");
2628 vec_pop(parser->breaks);
2629 vec_pop(parser->continues);
2633 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2636 ast_expression *initexpr, *cond, *increment, *ontrue;
2642 lex_ctx ctx = parser_ctx(parser);
2644 parser_enterblock(parser);
2651 /* parse into the expression */
2652 if (!parser_next(parser)) {
2653 parseerror(parser, "expected 'for' initializer after opening paren");
2658 if (parser->tok == TOKEN_IDENT)
2659 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2661 if (typevar || parser->tok == TOKEN_TYPENAME) {
2663 if (opts.standard != COMPILER_GMQCC) {
2664 if (parsewarning(parser, WARN_EXTENSIONS,
2665 "current standard does not allow variable declarations in for-loop initializers"))
2669 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2672 else if (parser->tok != ';')
2674 initexpr = parse_expression_leave(parser, false, false, false);
2679 /* move on to condition */
2680 if (parser->tok != ';') {
2681 parseerror(parser, "expected semicolon after for-loop initializer");
2684 if (!parser_next(parser)) {
2685 parseerror(parser, "expected for-loop condition");
2689 /* parse the condition */
2690 if (parser->tok != ';') {
2691 cond = parse_expression_leave(parser, false, true, false);
2696 /* move on to incrementor */
2697 if (parser->tok != ';') {
2698 parseerror(parser, "expected semicolon after for-loop initializer");
2701 if (!parser_next(parser)) {
2702 parseerror(parser, "expected for-loop condition");
2706 /* parse the incrementor */
2707 if (parser->tok != ')') {
2708 increment = parse_expression_leave(parser, false, false, false);
2711 if (!ast_side_effects(increment)) {
2712 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2718 if (parser->tok != ')') {
2719 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2722 /* parse into the 'then' branch */
2723 if (!parser_next(parser)) {
2724 parseerror(parser, "expected for-loop body");
2727 if (!parse_statement_or_block(parser, &ontrue))
2731 cond = process_condition(parser, cond, &ifnot);
2735 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2736 *out = (ast_expression*)aloop;
2738 if (!parser_leaveblock(parser))
2742 if (initexpr) ast_delete(initexpr);
2743 if (cond) ast_delete(cond);
2744 if (increment) ast_delete(increment);
2745 (void)!parser_leaveblock(parser);
2749 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2751 ast_expression *exp = NULL;
2752 ast_return *ret = NULL;
2753 ast_value *expected = parser->function->vtype;
2755 lex_ctx ctx = parser_ctx(parser);
2757 (void)block; /* not touching */
2759 if (!parser_next(parser)) {
2760 parseerror(parser, "expected return expression");
2764 if (parser->tok != ';') {
2765 exp = parse_expression(parser, false, false);
2769 if (exp->expression.vtype != TYPE_NIL &&
2770 exp->expression.vtype != expected->expression.next->expression.vtype)
2772 parseerror(parser, "return with invalid expression");
2775 ret = ast_return_new(ctx, exp);
2781 if (!parser_next(parser))
2782 parseerror(parser, "parse error");
2783 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2784 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2786 ret = ast_return_new(ctx, NULL);
2788 *out = (ast_expression*)ret;
2792 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2795 unsigned int levels = 0;
2796 lex_ctx ctx = parser_ctx(parser);
2797 const char **loops = (is_continue ? parser->continues : parser->breaks);
2799 (void)block; /* not touching */
2800 if (!parser_next(parser)) {
2801 parseerror(parser, "expected semicolon or loop label");
2805 if (!vec_size(loops)) {
2807 parseerror(parser, "`continue` can only be used inside loops");
2809 parseerror(parser, "`break` can only be used inside loops or switches");
2812 if (parser->tok == TOKEN_IDENT) {
2813 if (!OPTS_FLAG(LOOP_LABELS))
2814 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2815 i = vec_size(loops);
2817 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2820 parseerror(parser, "no such loop to %s: `%s`",
2821 (is_continue ? "continue" : "break out of"),
2822 parser_tokval(parser));
2827 if (!parser_next(parser)) {
2828 parseerror(parser, "expected semicolon");
2833 if (parser->tok != ';') {
2834 parseerror(parser, "expected semicolon");
2838 if (!parser_next(parser))
2839 parseerror(parser, "parse error");
2841 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2845 /* returns true when it was a variable qualifier, false otherwise!
2846 * on error, cvq is set to CV_WRONG
2848 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2850 bool had_const = false;
2851 bool had_var = false;
2852 bool had_noref = false;
2853 bool had_attrib = false;
2854 bool had_static = false;
2859 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2861 /* parse an attribute */
2862 if (!parser_next(parser)) {
2863 parseerror(parser, "expected attribute after `[[`");
2867 if (!strcmp(parser_tokval(parser), "noreturn")) {
2868 flags |= AST_FLAG_NORETURN;
2869 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2870 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2875 else if (!strcmp(parser_tokval(parser), "noref")) {
2877 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2878 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2883 else if (!strcmp(parser_tokval(parser), "inline")) {
2884 flags |= AST_FLAG_INLINE;
2885 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2886 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2893 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2894 flags |= AST_FLAG_DEPRECATED;
2897 if (!parser_next(parser)) {
2898 parseerror(parser, "parse error in attribute");
2902 if (parser->tok == '(') {
2903 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2904 parseerror(parser, "`deprecated` attribute missing parameter");
2908 *message = util_strdup(parser_tokval(parser));
2910 if (!parser_next(parser)) {
2911 parseerror(parser, "parse error in attribute");
2915 if(parser->tok != ')') {
2916 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2920 if (!parser_next(parser)) {
2921 parseerror(parser, "parse error in attribute");
2926 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2927 parseerror(parser, "`deprecated` attribute expected `]]`");
2930 if (*message) mem_d(*message);
2938 /* Skip tokens until we hit a ]] */
2939 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2940 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2941 if (!parser_next(parser)) {
2942 parseerror(parser, "error inside attribute");
2949 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2951 else if (!strcmp(parser_tokval(parser), "const"))
2953 else if (!strcmp(parser_tokval(parser), "var"))
2955 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2957 else if (!strcmp(parser_tokval(parser), "noref"))
2959 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2964 if (!parser_next(parser))
2974 *is_static = had_static;
2978 parseerror(parser, "parse error after variable qualifier");
2983 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2984 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2989 /* skip the 'while' and get the body */
2990 if (!parser_next(parser)) {
2991 if (OPTS_FLAG(LOOP_LABELS))
2992 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2994 parseerror(parser, "expected 'switch' operand in parenthesis");
2998 if (parser->tok == ':') {
2999 if (!OPTS_FLAG(LOOP_LABELS))
3000 parseerror(parser, "labeled loops not activated, try using -floop-labels");
3001 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3002 parseerror(parser, "expected loop label");
3005 label = util_strdup(parser_tokval(parser));
3006 if (!parser_next(parser)) {
3008 parseerror(parser, "expected 'switch' operand in parenthesis");
3013 if (parser->tok != '(') {
3014 parseerror(parser, "expected 'switch' operand in parenthesis");
3018 vec_push(parser->breaks, label);
3020 rv = parse_switch_go(parser, block, out);
3023 if (vec_last(parser->breaks) != label) {
3024 parseerror(parser, "internal error: label stack corrupted");
3030 vec_pop(parser->breaks);
3035 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3037 ast_expression *operand;
3040 ast_switch *switchnode;
3041 ast_switch_case swcase;
3044 bool noref, is_static;
3045 uint32_t qflags = 0;
3047 lex_ctx ctx = parser_ctx(parser);
3049 (void)block; /* not touching */
3052 /* parse into the expression */
3053 if (!parser_next(parser)) {
3054 parseerror(parser, "expected switch operand");
3057 /* parse the operand */
3058 operand = parse_expression_leave(parser, false, false, false);
3062 switchnode = ast_switch_new(ctx, operand);
3065 if (parser->tok != ')') {
3066 ast_delete(switchnode);
3067 parseerror(parser, "expected closing paren after 'switch' operand");
3071 /* parse over the opening paren */
3072 if (!parser_next(parser) || parser->tok != '{') {
3073 ast_delete(switchnode);
3074 parseerror(parser, "expected list of cases");
3078 if (!parser_next(parser)) {
3079 ast_delete(switchnode);
3080 parseerror(parser, "expected 'case' or 'default'");
3084 /* new block; allow some variables to be declared here */
3085 parser_enterblock(parser);
3088 if (parser->tok == TOKEN_IDENT)
3089 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3090 if (typevar || parser->tok == TOKEN_TYPENAME) {
3091 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3092 ast_delete(switchnode);
3097 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3099 if (cvq == CV_WRONG) {
3100 ast_delete(switchnode);
3103 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3104 ast_delete(switchnode);
3113 while (parser->tok != '}') {
3114 ast_block *caseblock;
3116 if (!strcmp(parser_tokval(parser), "case")) {
3117 if (!parser_next(parser)) {
3118 ast_delete(switchnode);
3119 parseerror(parser, "expected expression for case");
3122 swcase.value = parse_expression_leave(parser, false, false, false);
3123 if (!swcase.value) {
3124 ast_delete(switchnode);
3125 parseerror(parser, "expected expression for case");
3128 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3129 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3130 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3136 else if (!strcmp(parser_tokval(parser), "default")) {
3137 swcase.value = NULL;
3138 if (!parser_next(parser)) {
3139 ast_delete(switchnode);
3140 parseerror(parser, "expected colon");
3145 ast_delete(switchnode);
3146 parseerror(parser, "expected 'case' or 'default'");
3150 /* Now the colon and body */
3151 if (parser->tok != ':') {
3152 if (swcase.value) ast_unref(swcase.value);
3153 ast_delete(switchnode);
3154 parseerror(parser, "expected colon");
3158 if (!parser_next(parser)) {
3159 if (swcase.value) ast_unref(swcase.value);
3160 ast_delete(switchnode);
3161 parseerror(parser, "expected statements or case");
3164 caseblock = ast_block_new(parser_ctx(parser));
3166 if (swcase.value) ast_unref(swcase.value);
3167 ast_delete(switchnode);
3170 swcase.code = (ast_expression*)caseblock;
3171 vec_push(switchnode->cases, swcase);
3173 ast_expression *expr;
3174 if (parser->tok == '}')
3176 if (parser->tok == TOKEN_KEYWORD) {
3177 if (!strcmp(parser_tokval(parser), "case") ||
3178 !strcmp(parser_tokval(parser), "default"))
3183 if (!parse_statement(parser, caseblock, &expr, true)) {
3184 ast_delete(switchnode);
3189 if (!ast_block_add_expr(caseblock, expr)) {
3190 ast_delete(switchnode);
3196 parser_leaveblock(parser);
3199 if (parser->tok != '}') {
3200 ast_delete(switchnode);
3201 parseerror(parser, "expected closing paren of case list");
3204 if (!parser_next(parser)) {
3205 ast_delete(switchnode);
3206 parseerror(parser, "parse error after switch");
3209 *out = (ast_expression*)switchnode;
3213 /* parse computed goto sides */
3214 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3215 ast_expression *on_true;
3216 ast_expression *on_false;
3217 ast_expression *cond;
3222 if (ast_istype(*side, ast_ternary)) {
3223 ast_ternary *tern = (ast_ternary*)*side;
3224 on_true = parse_goto_computed(parser, &tern->on_true);
3225 on_false = parse_goto_computed(parser, &tern->on_false);
3227 if (!on_true || !on_false) {
3228 parseerror(parser, "expected label or expression in ternary");
3229 if (on_true) ast_unref(on_true);
3230 if (on_false) ast_unref(on_false);
3238 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3239 } else if (ast_istype(*side, ast_label)) {
3240 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3241 ast_goto_set_label(gt, ((ast_label*)*side));
3243 return (ast_expression*)gt;
3248 static bool parse_goto(parser_t *parser, ast_expression **out)
3250 ast_goto *gt = NULL;
3251 ast_expression *lbl;
3253 if (!parser_next(parser))
3256 if (parser->tok != TOKEN_IDENT) {
3257 ast_expression *expression;
3259 /* could be an expression i.e computed goto :-) */
3260 if (parser->tok != '(') {
3261 parseerror(parser, "expected label name after `goto`");
3265 /* failed to parse expression for goto */
3266 if (!(expression = parse_expression(parser, false, true)) ||
3267 !(*out = parse_goto_computed(parser, &expression))) {
3268 parseerror(parser, "invalid goto expression");
3269 ast_unref(expression);
3276 /* not computed goto */
3277 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3278 lbl = parser_find_label(parser, gt->name);
3280 if (!ast_istype(lbl, ast_label)) {
3281 parseerror(parser, "internal error: label is not an ast_label");
3285 ast_goto_set_label(gt, (ast_label*)lbl);
3288 vec_push(parser->gotos, gt);
3290 if (!parser_next(parser) || parser->tok != ';') {
3291 parseerror(parser, "semicolon expected after goto label");
3294 if (!parser_next(parser)) {
3295 parseerror(parser, "parse error after goto");
3299 *out = (ast_expression*)gt;
3303 static bool parse_skipwhite(parser_t *parser)
3306 if (!parser_next(parser))
3308 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3309 return parser->tok < TOKEN_ERROR;
3312 static bool parse_eol(parser_t *parser)
3314 if (!parse_skipwhite(parser))
3316 return parser->tok == TOKEN_EOL;
3319 static bool parse_pragma_do(parser_t *parser)
3321 if (!parser_next(parser) ||
3322 parser->tok != TOKEN_IDENT ||
3323 strcmp(parser_tokval(parser), "pragma"))
3325 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3328 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3329 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3333 if (!strcmp(parser_tokval(parser), "noref")) {
3334 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3335 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3338 parser->noref = !!parser_token(parser)->constval.i;
3339 if (!parse_eol(parser)) {
3340 parseerror(parser, "parse error after `noref` pragma");
3346 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3353 static bool parse_pragma(parser_t *parser)
3356 parser->lex->flags.preprocessing = true;
3357 parser->lex->flags.mergelines = true;
3358 rv = parse_pragma_do(parser);
3359 if (parser->tok != TOKEN_EOL) {
3360 parseerror(parser, "junk after pragma");
3363 parser->lex->flags.preprocessing = false;
3364 parser->lex->flags.mergelines = false;
3365 if (!parser_next(parser)) {
3366 parseerror(parser, "parse error after pragma");
3372 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3374 bool noref, is_static;
3376 uint32_t qflags = 0;
3377 ast_value *typevar = NULL;
3378 char *vstring = NULL;
3382 if (parser->tok == TOKEN_IDENT)
3383 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3385 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3387 /* local variable */
3389 parseerror(parser, "cannot declare a variable from here");
3392 if (opts.standard == COMPILER_QCC) {
3393 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3396 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3400 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3402 if (cvq == CV_WRONG)
3404 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3406 else if (parser->tok == TOKEN_KEYWORD)
3408 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3413 if (!parser_next(parser)) {
3414 parseerror(parser, "parse error after __builtin_debug_printtype");
3418 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3420 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3421 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3422 if (!parser_next(parser)) {
3423 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3429 if (!parse_statement(parser, block, out, allow_cases))
3432 con_out("__builtin_debug_printtype: got no output node\n");
3435 ast_type_to_string(*out, ty, sizeof(ty));
3436 con_out("__builtin_debug_printtype: `%s`\n", ty);
3441 else if (!strcmp(parser_tokval(parser), "return"))
3443 return parse_return(parser, block, out);
3445 else if (!strcmp(parser_tokval(parser), "if"))
3447 return parse_if(parser, block, out);
3449 else if (!strcmp(parser_tokval(parser), "while"))
3451 return parse_while(parser, block, out);
3453 else if (!strcmp(parser_tokval(parser), "do"))
3455 return parse_dowhile(parser, block, out);
3457 else if (!strcmp(parser_tokval(parser), "for"))
3459 if (opts.standard == COMPILER_QCC) {
3460 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3463 return parse_for(parser, block, out);
3465 else if (!strcmp(parser_tokval(parser), "break"))
3467 return parse_break_continue(parser, block, out, false);
3469 else if (!strcmp(parser_tokval(parser), "continue"))
3471 return parse_break_continue(parser, block, out, true);
3473 else if (!strcmp(parser_tokval(parser), "switch"))
3475 return parse_switch(parser, block, out);
3477 else if (!strcmp(parser_tokval(parser), "case") ||
3478 !strcmp(parser_tokval(parser), "default"))
3481 parseerror(parser, "unexpected 'case' label");
3486 else if (!strcmp(parser_tokval(parser), "goto"))
3488 return parse_goto(parser, out);
3490 else if (!strcmp(parser_tokval(parser), "typedef"))
3492 if (!parser_next(parser)) {
3493 parseerror(parser, "expected type definition after 'typedef'");
3496 return parse_typedef(parser);
3498 parseerror(parser, "Unexpected keyword");
3501 else if (parser->tok == '{')
3504 inner = parse_block(parser);
3507 *out = (ast_expression*)inner;
3510 else if (parser->tok == ':')
3514 if (!parser_next(parser)) {
3515 parseerror(parser, "expected label name");
3518 if (parser->tok != TOKEN_IDENT) {
3519 parseerror(parser, "label must be an identifier");
3522 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3524 if (!label->undefined) {
3525 parseerror(parser, "label `%s` already defined", label->name);
3528 label->undefined = false;
3531 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3532 vec_push(parser->labels, label);
3534 *out = (ast_expression*)label;
3535 if (!parser_next(parser)) {
3536 parseerror(parser, "parse error after label");
3539 for (i = 0; i < vec_size(parser->gotos); ++i) {
3540 if (!strcmp(parser->gotos[i]->name, label->name)) {
3541 ast_goto_set_label(parser->gotos[i], label);
3542 vec_remove(parser->gotos, i, 1);
3548 else if (parser->tok == ';')
3550 if (!parser_next(parser)) {
3551 parseerror(parser, "parse error after empty statement");
3558 ast_expression *exp = parse_expression(parser, false, false);
3562 if (!ast_side_effects(exp)) {
3563 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3570 static bool parse_enum(parser_t *parser)
3573 ast_value **values = NULL;
3574 ast_value *var = NULL;
3577 ast_expression *old;
3579 if (!parser_next(parser) || parser->tok != '{') {
3580 parseerror(parser, "expected `{` after `enum` keyword");
3585 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3586 if (parser->tok == '}') {
3587 /* allow an empty enum */
3590 parseerror(parser, "expected identifier or `}`");
3594 old = parser_find_field(parser, parser_tokval(parser));
3596 old = parser_find_global(parser, parser_tokval(parser));
3598 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3599 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3603 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3604 vec_push(values, var);
3605 var->cvq = CV_CONST;
3606 var->hasvalue = true;
3607 var->constval.vfloat = num++;
3609 parser_addglobal(parser, var->name, (ast_expression*)var);
3611 if (!parser_next(parser)) {
3612 parseerror(parser, "expected `=`, `}` or comma after identifier");
3616 if (parser->tok == ',')
3618 if (parser->tok == '}')
3620 if (parser->tok != '=') {
3621 parseerror(parser, "expected `=`, `}` or comma after identifier");
3625 if (!parser_next(parser)) {
3626 parseerror(parser, "expected expression after `=`");
3630 /* We got a value! */
3631 old = parse_expression_leave(parser, true, false, false);
3632 asvalue = (ast_value*)old;
3633 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3634 compile_error(ast_ctx(var), "constant value or expression expected");
3637 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3639 if (parser->tok == '}')
3641 if (parser->tok != ',') {
3642 parseerror(parser, "expected `}` or comma after expression");
3647 if (parser->tok != '}') {
3648 parseerror(parser, "internal error: breaking without `}`");
3652 if (!parser_next(parser) || parser->tok != ';') {
3653 parseerror(parser, "expected semicolon after enumeration");
3657 if (!parser_next(parser)) {
3658 parseerror(parser, "parse error after enumeration");
3670 static bool parse_block_into(parser_t *parser, ast_block *block)
3674 parser_enterblock(parser);
3676 if (!parser_next(parser)) { /* skip the '{' */
3677 parseerror(parser, "expected function body");
3681 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3683 ast_expression *expr = NULL;
3684 if (parser->tok == '}')
3687 if (!parse_statement(parser, block, &expr, false)) {
3688 /* parseerror(parser, "parse error"); */
3694 if (!ast_block_add_expr(block, expr)) {
3701 if (parser->tok != '}') {
3704 (void)parser_next(parser);
3708 if (!parser_leaveblock(parser))
3710 return retval && !!block;
3713 static ast_block* parse_block(parser_t *parser)
3716 block = ast_block_new(parser_ctx(parser));
3719 if (!parse_block_into(parser, block)) {
3720 ast_block_delete(block);
3726 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3728 if (parser->tok == '{') {
3729 *out = (ast_expression*)parse_block(parser);
3732 return parse_statement(parser, NULL, out, false);
3735 static bool create_vector_members(ast_value *var, ast_member **me)
3738 size_t len = strlen(var->name);
3740 for (i = 0; i < 3; ++i) {
3741 char *name = (char*)mem_a(len+3);
3742 memcpy(name, var->name, len);
3744 name[len+1] = 'x'+i;
3746 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3755 do { ast_member_delete(me[--i]); } while(i);
3759 static bool parse_function_body(parser_t *parser, ast_value *var)
3761 ast_block *block = NULL;
3766 ast_expression *framenum = NULL;
3767 ast_expression *nextthink = NULL;
3768 /* None of the following have to be deleted */
3769 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3770 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3771 bool has_frame_think;
3775 has_frame_think = false;
3776 old = parser->function;
3778 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3779 parseerror(parser, "gotos/labels leaking");
3783 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
3784 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3785 "variadic function with implementation will not be able to access additional parameters"))
3791 if (parser->tok == '[') {
3792 /* got a frame definition: [ framenum, nextthink ]
3793 * this translates to:
3794 * self.frame = framenum;
3795 * self.nextthink = time + 0.1;
3796 * self.think = nextthink;
3800 fld_think = parser_find_field(parser, "think");
3801 fld_nextthink = parser_find_field(parser, "nextthink");
3802 fld_frame = parser_find_field(parser, "frame");
3803 if (!fld_think || !fld_nextthink || !fld_frame) {
3804 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3805 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3808 gbl_time = parser_find_global(parser, "time");
3809 gbl_self = parser_find_global(parser, "self");
3810 if (!gbl_time || !gbl_self) {
3811 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3812 parseerror(parser, "please declare the following globals: `time`, `self`");
3816 if (!parser_next(parser))
3819 framenum = parse_expression_leave(parser, true, false, false);
3821 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3824 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3825 ast_unref(framenum);
3826 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3830 if (parser->tok != ',') {
3831 ast_unref(framenum);
3832 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3833 parseerror(parser, "Got a %i\n", parser->tok);
3837 if (!parser_next(parser)) {
3838 ast_unref(framenum);
3842 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3844 /* qc allows the use of not-yet-declared functions here
3845 * - this automatically creates a prototype */
3846 ast_value *thinkfunc;
3847 ast_expression *functype = fld_think->expression.next;
3849 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3850 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3851 ast_unref(framenum);
3852 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3856 if (!parser_next(parser)) {
3857 ast_unref(framenum);
3858 ast_delete(thinkfunc);
3862 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3864 nextthink = (ast_expression*)thinkfunc;
3867 nextthink = parse_expression_leave(parser, true, false, false);
3869 ast_unref(framenum);
3870 parseerror(parser, "expected a think-function in [frame,think] notation");
3875 if (!ast_istype(nextthink, ast_value)) {
3876 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3880 if (retval && parser->tok != ']') {
3881 parseerror(parser, "expected closing `]` for [frame,think] notation");
3885 if (retval && !parser_next(parser)) {
3889 if (retval && parser->tok != '{') {
3890 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3895 ast_unref(nextthink);
3896 ast_unref(framenum);
3900 has_frame_think = true;
3903 block = ast_block_new(parser_ctx(parser));
3905 parseerror(parser, "failed to allocate block");
3906 if (has_frame_think) {
3907 ast_unref(nextthink);
3908 ast_unref(framenum);
3913 if (has_frame_think) {
3915 ast_expression *self_frame;
3916 ast_expression *self_nextthink;
3917 ast_expression *self_think;
3918 ast_expression *time_plus_1;
3919 ast_store *store_frame;
3920 ast_store *store_nextthink;
3921 ast_store *store_think;
3923 ctx = parser_ctx(parser);
3924 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3925 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3926 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3928 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3929 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3931 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3932 if (self_frame) ast_delete(self_frame);
3933 if (self_nextthink) ast_delete(self_nextthink);
3934 if (self_think) ast_delete(self_think);
3935 if (time_plus_1) ast_delete(time_plus_1);
3941 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3942 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3943 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3946 ast_delete(self_frame);
3949 if (!store_nextthink) {
3950 ast_delete(self_nextthink);
3954 ast_delete(self_think);
3958 if (store_frame) ast_delete(store_frame);
3959 if (store_nextthink) ast_delete(store_nextthink);
3960 if (store_think) ast_delete(store_think);
3963 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3964 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3965 !ast_block_add_expr(block, (ast_expression*)store_think))
3972 parseerror(parser, "failed to generate code for [frame,think]");
3973 ast_unref(nextthink);
3974 ast_unref(framenum);
3980 parser_enterblock(parser);
3982 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3984 ast_value *param = var->expression.params[parami];
3987 if (param->expression.vtype != TYPE_VECTOR &&
3988 (param->expression.vtype != TYPE_FIELD ||
3989 param->expression.next->expression.vtype != TYPE_VECTOR))
3994 if (!create_vector_members(param, me)) {
3995 ast_block_delete(block);
3999 for (e = 0; e < 3; ++e) {
4000 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4001 ast_block_collect(block, (ast_expression*)me[e]);
4005 func = ast_function_new(ast_ctx(var), var->name, var);
4007 parseerror(parser, "failed to allocate function for `%s`", var->name);
4008 ast_block_delete(block);
4011 vec_push(parser->functions, func);
4013 if (var->argcounter) {
4014 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4015 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4019 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4021 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4022 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4023 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4024 varargs->expression.count = 0;
4025 snprintf(name, sizeof(name), "%s##va##SET", var->name);
4026 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4027 ast_delete(varargs);
4028 ast_block_delete(block);
4031 snprintf(name, sizeof(name), "%s##va##GET", var->name);
4032 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4033 ast_delete(varargs);
4034 ast_block_delete(block);
4037 func->varargs = varargs;
4040 parser->function = func;
4041 if (!parse_block_into(parser, block)) {
4042 ast_block_delete(block);
4046 vec_push(func->blocks, block);
4048 parser->function = old;
4049 if (!parser_leaveblock(parser))
4051 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4052 parseerror(parser, "internal error: local scopes left");
4056 if (parser->tok == ';')
4057 return parser_next(parser);
4058 else if (opts.standard == COMPILER_QCC)
4059 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4063 vec_pop(parser->functions);
4064 ast_function_delete(func);
4065 var->constval.vfunc = NULL;
4068 (void)!parser_leaveblock(parser);
4069 parser->function = old;
4073 static ast_expression *array_accessor_split(
4078 ast_expression *left,
4079 ast_expression *right
4085 lex_ctx ctx = ast_ctx(array);
4087 if (!left || !right) {
4088 if (left) ast_delete(left);
4089 if (right) ast_delete(right);
4093 cmp = ast_binary_new(ctx, INSTR_LT,
4094 (ast_expression*)index,
4095 (ast_expression*)parser_const_float(parser, middle));
4099 parseerror(parser, "internal error: failed to create comparison for array setter");
4103 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4105 ast_delete(cmp); /* will delete left and right */
4106 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4110 return (ast_expression*)ifthen;
4113 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4115 lex_ctx ctx = ast_ctx(array);
4117 if (from+1 == afterend) {
4118 /* set this value */
4121 ast_array_index *subscript;
4123 int assignop = type_store_instr[value->expression.vtype];
4125 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
4126 assignop = INSTR_STORE_V;
4128 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4132 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4134 ast_delete(subscript);
4138 block = ast_block_new(ctx);
4144 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4149 ret = ast_return_new(ctx, NULL);
4155 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4160 return (ast_expression*)block;
4162 ast_expression *left, *right;
4163 size_t diff = afterend - from;
4164 size_t middle = from + diff/2;
4165 left = array_setter_node(parser, array, index, value, from, middle);
4166 right = array_setter_node(parser, array, index, value, middle, afterend);
4167 return array_accessor_split(parser, array, index, middle, left, right);
4171 static ast_expression *array_field_setter_node(
4180 lex_ctx ctx = ast_ctx(array);
4182 if (from+1 == afterend) {
4183 /* set this value */
4186 ast_entfield *entfield;
4187 ast_array_index *subscript;
4189 int assignop = type_storep_instr[value->expression.vtype];
4191 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
4192 assignop = INSTR_STOREP_V;
4194 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4198 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4199 subscript->expression.vtype = TYPE_FIELD;
4201 entfield = ast_entfield_new_force(ctx,
4202 (ast_expression*)entity,
4203 (ast_expression*)subscript,
4204 (ast_expression*)subscript);
4206 ast_delete(subscript);
4210 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4212 ast_delete(entfield);
4216 block = ast_block_new(ctx);
4222 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4227 ret = ast_return_new(ctx, NULL);
4233 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4238 return (ast_expression*)block;
4240 ast_expression *left, *right;
4241 size_t diff = afterend - from;
4242 size_t middle = from + diff/2;
4243 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4244 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4245 return array_accessor_split(parser, array, index, middle, left, right);
4249 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4251 lex_ctx ctx = ast_ctx(array);
4253 if (from+1 == afterend) {
4255 ast_array_index *subscript;
4257 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4261 ret = ast_return_new(ctx, (ast_expression*)subscript);
4263 ast_delete(subscript);
4267 return (ast_expression*)ret;
4269 ast_expression *left, *right;
4270 size_t diff = afterend - from;
4271 size_t middle = from + diff/2;
4272 left = array_getter_node(parser, array, index, from, middle);
4273 right = array_getter_node(parser, array, index, middle, afterend);
4274 return array_accessor_split(parser, array, index, middle, left, right);
4278 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4280 ast_function *func = NULL;
4281 ast_value *fval = NULL;
4282 ast_block *body = NULL;
4284 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4286 parseerror(parser, "failed to create accessor function value");
4290 func = ast_function_new(ast_ctx(array), funcname, fval);
4293 parseerror(parser, "failed to create accessor function node");
4297 body = ast_block_new(ast_ctx(array));
4299 parseerror(parser, "failed to create block for array accessor");
4305 vec_push(func->blocks, body);
4308 vec_push(parser->accessors, fval);
4313 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4315 ast_value *index = NULL;
4316 ast_value *value = NULL;
4320 if (!ast_istype(array->expression.next, ast_value)) {
4321 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4325 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4327 func = fval->constval.vfunc;
4328 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4330 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4331 value = ast_value_copy((ast_value*)array->expression.next);
4333 if (!index || !value) {
4334 parseerror(parser, "failed to create locals for array accessor");
4337 (void)!ast_value_set_name(value, "value"); /* not important */
4338 vec_push(fval->expression.params, index);
4339 vec_push(fval->expression.params, value);
4341 array->setter = fval;
4344 if (index) ast_delete(index);
4345 if (value) ast_delete(value);
4351 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4353 ast_expression *root = NULL;
4354 root = array_setter_node(parser, array,
4355 array->setter->expression.params[0],
4356 array->setter->expression.params[1],
4357 0, array->expression.count);
4359 parseerror(parser, "failed to build accessor search tree");
4362 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4369 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4371 if (!parser_create_array_setter_proto(parser, array, funcname))
4373 return parser_create_array_setter_impl(parser, array);
4376 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4378 ast_expression *root = NULL;
4379 ast_value *entity = NULL;
4380 ast_value *index = NULL;
4381 ast_value *value = NULL;
4385 if (!ast_istype(array->expression.next, ast_value)) {
4386 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4390 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4392 func = fval->constval.vfunc;
4393 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4395 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4396 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4397 value = ast_value_copy((ast_value*)array->expression.next);
4398 if (!entity || !index || !value) {
4399 parseerror(parser, "failed to create locals for array accessor");
4402 (void)!ast_value_set_name(value, "value"); /* not important */
4403 vec_push(fval->expression.params, entity);
4404 vec_push(fval->expression.params, index);
4405 vec_push(fval->expression.params, value);
4407 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4409 parseerror(parser, "failed to build accessor search tree");
4413 array->setter = fval;
4414 return ast_block_add_expr(func->blocks[0], root);
4416 if (entity) ast_delete(entity);
4417 if (index) ast_delete(index);
4418 if (value) ast_delete(value);
4419 if (root) ast_delete(root);
4425 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4427 ast_value *index = NULL;
4431 /* NOTE: checking array->expression.next rather than elemtype since
4432 * for fields elemtype is a temporary fieldtype.
4434 if (!ast_istype(array->expression.next, ast_value)) {
4435 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4439 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4441 func = fval->constval.vfunc;
4442 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4444 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4447 parseerror(parser, "failed to create locals for array accessor");
4450 vec_push(fval->expression.params, index);
4452 array->getter = fval;
4455 if (index) ast_delete(index);
4461 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4463 ast_expression *root = NULL;
4465 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4467 parseerror(parser, "failed to build accessor search tree");
4470 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4477 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4479 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4481 return parser_create_array_getter_impl(parser, array);
4484 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4485 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4493 bool variadic = false;
4494 ast_value *varparam = NULL;
4495 char *argcounter = NULL;
4497 ctx = parser_ctx(parser);
4499 /* for the sake of less code we parse-in in this function */
4500 if (!parser_next(parser)) {
4501 parseerror(parser, "expected parameter list");
4507 /* parse variables until we hit a closing paren */
4508 while (parser->tok != ')') {
4510 /* there must be commas between them */
4511 if (parser->tok != ',') {
4512 parseerror(parser, "expected comma or end of parameter list");
4515 if (!parser_next(parser)) {
4516 parseerror(parser, "expected parameter");
4522 if (parser->tok == TOKEN_DOTS) {
4523 /* '...' indicates a varargs function */
4525 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4526 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4529 if (parser->tok == TOKEN_IDENT) {
4530 argcounter = util_strdup(parser_tokval(parser));
4531 if (!parser_next(parser) || parser->tok != ')') {
4532 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4539 /* for anything else just parse a typename */
4540 param = parse_typename(parser, NULL, NULL);
4543 vec_push(params, param);
4544 if (param->expression.vtype >= TYPE_VARIANT) {
4545 char tname[1024]; /* typename is reserved in C++ */
4546 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4547 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4550 /* type-restricted varargs */
4551 if (parser->tok == TOKEN_DOTS) {
4553 varparam = vec_last(params);
4555 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4556 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4559 if (parser->tok == TOKEN_IDENT) {
4560 argcounter = util_strdup(parser_tokval(parser));
4561 if (!parser_next(parser) || parser->tok != ')') {
4562 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4570 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4574 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
4575 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4578 if (!parser_next(parser)) {
4579 parseerror(parser, "parse error after typename");
4583 /* now turn 'var' into a function type */
4584 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4585 fval->expression.next = (ast_expression*)var;
4587 fval->expression.flags |= AST_FLAG_VARIADIC;
4590 var->expression.params = params;
4591 var->expression.varparam = (ast_expression*)varparam;
4592 var->argcounter = argcounter;
4601 for (i = 0; i < vec_size(params); ++i)
4602 ast_delete(params[i]);
4607 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4609 ast_expression *cexp;
4610 ast_value *cval, *tmp;
4613 ctx = parser_ctx(parser);
4615 if (!parser_next(parser)) {
4617 parseerror(parser, "expected array-size");
4621 cexp = parse_expression_leave(parser, true, false, false);
4623 if (!cexp || !ast_istype(cexp, ast_value)) {
4627 parseerror(parser, "expected array-size as constant positive integer");
4630 cval = (ast_value*)cexp;
4632 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4633 tmp->expression.next = (ast_expression*)var;
4636 if (cval->expression.vtype == TYPE_INTEGER)
4637 tmp->expression.count = cval->constval.vint;
4638 else if (cval->expression.vtype == TYPE_FLOAT)
4639 tmp->expression.count = cval->constval.vfloat;
4643 parseerror(parser, "array-size must be a positive integer constant");
4648 if (parser->tok != ']') {
4650 parseerror(parser, "expected ']' after array-size");
4653 if (!parser_next(parser)) {
4655 parseerror(parser, "error after parsing array size");
4661 /* Parse a complete typename.
4662 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4663 * but when parsing variables separated by comma
4664 * 'storebase' should point to where the base-type should be kept.
4665 * The base type makes up every bit of type information which comes *before* the
4668 * The following will be parsed in its entirety:
4670 * The 'basetype' in this case is 'void()'
4671 * and if there's a comma after it, say:
4673 * then the type-information 'void()' can be stored in 'storebase'
4675 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4677 ast_value *var, *tmp;
4680 const char *name = NULL;
4681 bool isfield = false;
4682 bool wasarray = false;
4683 size_t morefields = 0;
4685 ctx = parser_ctx(parser);
4687 /* types may start with a dot */
4688 if (parser->tok == '.') {
4690 /* if we parsed a dot we need a typename now */
4691 if (!parser_next(parser)) {
4692 parseerror(parser, "expected typename for field definition");
4696 /* Further dots are handled seperately because they won't be part of the
4699 while (parser->tok == '.') {
4701 if (!parser_next(parser)) {
4702 parseerror(parser, "expected typename for field definition");
4707 if (parser->tok == TOKEN_IDENT)
4708 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4709 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4710 parseerror(parser, "expected typename");
4714 /* generate the basic type value */
4715 if (cached_typedef) {
4716 var = ast_value_copy(cached_typedef);
4717 ast_value_set_name(var, "<type(from_def)>");
4719 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4721 for (; morefields; --morefields) {
4722 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4723 tmp->expression.next = (ast_expression*)var;
4727 /* do not yet turn into a field - remember:
4728 * .void() foo; is a field too
4729 * .void()() foo; is a function
4733 if (!parser_next(parser)) {
4735 parseerror(parser, "parse error after typename");
4739 /* an opening paren now starts the parameter-list of a function
4740 * this is where original-QC has parameter lists.
4741 * We allow a single parameter list here.
4742 * Much like fteqcc we don't allow `float()() x`
4744 if (parser->tok == '(') {
4745 var = parse_parameter_list(parser, var);
4750 /* store the base if requested */
4752 *storebase = ast_value_copy(var);
4754 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4755 tmp->expression.next = (ast_expression*)*storebase;
4760 /* there may be a name now */
4761 if (parser->tok == TOKEN_IDENT) {
4762 name = util_strdup(parser_tokval(parser));
4764 if (!parser_next(parser)) {
4766 parseerror(parser, "error after variable or field declaration");
4771 /* now this may be an array */
4772 if (parser->tok == '[') {
4774 var = parse_arraysize(parser, var);
4779 /* This is the point where we can turn it into a field */
4781 /* turn it into a field if desired */
4782 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4783 tmp->expression.next = (ast_expression*)var;
4787 /* now there may be function parens again */
4788 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
4789 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4790 if (parser->tok == '(' && wasarray)
4791 parseerror(parser, "arrays as part of a return type is not supported");
4792 while (parser->tok == '(') {
4793 var = parse_parameter_list(parser, var);
4802 /* finally name it */
4804 if (!ast_value_set_name(var, name)) {
4806 parseerror(parser, "internal error: failed to set name");
4809 /* free the name, ast_value_set_name duplicates */
4816 static bool parse_typedef(parser_t *parser)
4818 ast_value *typevar, *oldtype;
4819 ast_expression *old;
4821 typevar = parse_typename(parser, NULL, NULL);
4826 if ( (old = parser_find_var(parser, typevar->name)) ) {
4827 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4828 " -> `%s` has been declared here: %s:%i",
4829 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4830 ast_delete(typevar);
4834 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4835 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4836 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4837 ast_delete(typevar);
4841 vec_push(parser->_typedefs, typevar);
4842 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4844 if (parser->tok != ';') {
4845 parseerror(parser, "expected semicolon after typedef");
4848 if (!parser_next(parser)) {
4849 parseerror(parser, "parse error after typedef");
4856 static const char *cvq_to_str(int cvq) {
4858 case CV_NONE: return "none";
4859 case CV_VAR: return "`var`";
4860 case CV_CONST: return "`const`";
4861 default: return "<INVALID>";
4865 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4868 if (proto->cvq != var->cvq) {
4869 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4870 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4871 parser->tok == '='))
4873 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4874 "`%s` declared with different qualifiers: %s\n"
4875 " -> previous declaration here: %s:%i uses %s",
4876 var->name, cvq_to_str(var->cvq),
4877 ast_ctx(proto).file, ast_ctx(proto).line,
4878 cvq_to_str(proto->cvq));
4881 av = (var ->expression.flags & AST_FLAG_NORETURN);
4882 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4884 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4885 "`%s` declared with different attributes%s\n"
4886 " -> previous declaration here: %s:%i",
4887 var->name, (av ? ": noreturn" : ""),
4888 ast_ctx(proto).file, ast_ctx(proto).line,
4889 (ao ? ": noreturn" : ""));
4894 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)
4898 ast_expression *old;
4902 ast_value *basetype = NULL;
4904 bool isparam = false;
4905 bool isvector = false;
4906 bool cleanvar = true;
4907 bool wasarray = false;
4911 if (!localblock && is_static)
4912 parseerror(parser, "`static` qualifier is not supported in global scope");
4914 /* get the first complete variable */
4915 var = parse_typename(parser, &basetype, cached_typedef);
4918 ast_delete(basetype);
4926 /* Part 0: finish the type */
4927 if (parser->tok == '(') {
4928 if (opts.standard == COMPILER_QCC)
4929 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4930 var = parse_parameter_list(parser, var);
4936 /* we only allow 1-dimensional arrays */
4937 if (parser->tok == '[') {
4939 var = parse_arraysize(parser, var);
4945 if (parser->tok == '(' && wasarray) {
4946 parseerror(parser, "arrays as part of a return type is not supported");
4947 /* we'll still parse the type completely for now */
4949 /* for functions returning functions */
4950 while (parser->tok == '(') {
4951 if (opts.standard == COMPILER_QCC)
4952 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4953 var = parse_parameter_list(parser, var);
4960 var->cvq = qualifier;
4961 var->expression.flags |= qflags;
4962 if (var->expression.flags & AST_FLAG_DEPRECATED)
4963 var->desc = vstring;
4966 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4967 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4968 * is then filled with the previous definition and the parameter-names replaced.
4970 if (!strcmp(var->name, "nil")) {
4971 if (OPTS_FLAG(UNTYPED_NIL)) {
4972 if (!localblock || !OPTS_FLAG(PERMISSIVE))
4973 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
4975 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
4978 /* Deal with end_sys_ vars */
4980 if (!strcmp(var->name, "end_sys_globals")) {
4982 parser->crc_globals = vec_size(parser->globals);
4985 else if (!strcmp(var->name, "end_sys_fields")) {
4987 parser->crc_fields = vec_size(parser->fields);
4990 if (was_end && var->expression.vtype == TYPE_FIELD) {
4991 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4992 "global '%s' hint should not be a field",
4993 parser_tokval(parser)))
5000 if (!nofields && var->expression.vtype == TYPE_FIELD)
5002 /* deal with field declarations */
5003 old = parser_find_field(parser, var->name);
5005 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5006 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5015 parseerror(parser, "field `%s` already declared here: %s:%i",
5016 var->name, ast_ctx(old).file, ast_ctx(old).line);
5021 if ((opts.standard == COMPILER_QCC || opts.standard == COMPILER_FTEQCC) &&
5022 (old = parser_find_global(parser, var->name)))
5024 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5025 parseerror(parser, "field `%s` already declared here: %s:%i",
5026 var->name, ast_ctx(old).file, ast_ctx(old).line);
5033 /* deal with other globals */
5034 old = parser_find_global(parser, var->name);
5035 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
5037 /* This is a function which had a prototype */
5038 if (!ast_istype(old, ast_value)) {
5039 parseerror(parser, "internal error: prototype is not an ast_value");
5043 proto = (ast_value*)old;
5044 proto->desc = var->desc;
5045 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5046 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5048 ast_ctx(proto).file, ast_ctx(proto).line);
5052 /* we need the new parameter-names */
5053 for (i = 0; i < vec_size(proto->expression.params); ++i)
5054 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5055 if (!parser_check_qualifiers(parser, var, proto)) {
5062 proto->expression.flags |= var->expression.flags;
5070 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5071 "global `%s` already declared here: %s:%i",
5072 var->name, ast_ctx(old).file, ast_ctx(old).line))
5077 proto = (ast_value*)old;
5078 if (!ast_istype(old, ast_value)) {
5079 parseerror(parser, "internal error: not an ast_value");
5084 if (!parser_check_qualifiers(parser, var, proto)) {
5089 proto->expression.flags |= var->expression.flags;
5093 if (opts.standard == COMPILER_QCC &&
5094 (old = parser_find_field(parser, var->name)))
5096 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5097 parseerror(parser, "global `%s` already declared here: %s:%i",
5098 var->name, ast_ctx(old).file, ast_ctx(old).line);
5105 else /* it's not a global */
5107 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5108 if (old && !isparam) {
5109 parseerror(parser, "local `%s` already declared here: %s:%i",
5110 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5114 old = parser_find_local(parser, var->name, 0, &isparam);
5115 if (old && isparam) {
5116 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5117 "local `%s` is shadowing a parameter", var->name))
5119 parseerror(parser, "local `%s` already declared here: %s:%i",
5120 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5124 if (opts.standard != COMPILER_GMQCC) {
5132 /* in a noref section we simply bump the usecount */
5133 if (noref || parser->noref)
5137 * Create the global/local, and deal with vector types.
5140 if (var->expression.vtype == TYPE_VECTOR)
5142 else if (var->expression.vtype == TYPE_FIELD &&
5143 var->expression.next->expression.vtype == TYPE_VECTOR)
5147 if (!create_vector_members(var, me)) {
5154 /* deal with global variables, fields, functions */
5155 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5156 var->isfield = true;
5157 vec_push(parser->fields, (ast_expression*)var);
5158 util_htset(parser->htfields, var->name, var);
5160 for (i = 0; i < 3; ++i) {
5161 vec_push(parser->fields, (ast_expression*)me[i]);
5162 util_htset(parser->htfields, me[i]->name, me[i]);
5167 parser_addglobal(parser, var->name, (ast_expression*)var);
5169 for (i = 0; i < 3; ++i) {
5170 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5176 /* a static adds itself to be generated like any other global
5177 * but is added to the local namespace instead
5179 char *defname = NULL;
5180 size_t prefix_len, ln;
5182 ln = strlen(parser->function->name);
5183 vec_append(defname, ln, parser->function->name);
5185 vec_append(defname, 2, "::");
5186 /* remember the length up to here */
5187 prefix_len = vec_size(defname);
5189 /* Add it to the local scope */
5190 util_htset(vec_last(parser->variables), var->name, (void*)var);
5194 vec_last(parser->correct_variables),
5195 &vec_last(parser->correct_variables_score),
5199 /* now rename the global */
5200 ln = strlen(var->name);
5201 vec_append(defname, ln, var->name);
5202 ast_value_set_name(var, defname);
5204 /* push it to the to-be-generated globals */
5205 vec_push(parser->globals, (ast_expression*)var);
5207 /* same game for the vector members */
5209 for (i = 0; i < 3; ++i) {
5210 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5214 vec_last(parser->correct_variables),
5215 &vec_last(parser->correct_variables_score),
5219 vec_shrinkto(defname, prefix_len);
5220 ln = strlen(me[i]->name);
5221 vec_append(defname, ln, me[i]->name);
5222 ast_member_set_name(me[i], defname);
5224 vec_push(parser->globals, (ast_expression*)me[i]);
5229 vec_push(localblock->locals, var);
5230 parser_addlocal(parser, var->name, (ast_expression*)var);
5232 for (i = 0; i < 3; ++i) {
5233 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5234 ast_block_collect(localblock, (ast_expression*)me[i]);
5240 me[0] = me[1] = me[2] = NULL;
5245 if (var->expression.vtype == TYPE_ARRAY) {
5247 snprintf(name, sizeof(name), "%s##SET", var->name);
5248 if (!parser_create_array_setter(parser, var, name))
5250 snprintf(name, sizeof(name), "%s##GET", var->name);
5251 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5254 else if (!localblock && !nofields &&
5255 var->expression.vtype == TYPE_FIELD &&
5256 var->expression.next->expression.vtype == TYPE_ARRAY)
5259 ast_expression *telem;
5261 ast_value *array = (ast_value*)var->expression.next;
5263 if (!ast_istype(var->expression.next, ast_value)) {
5264 parseerror(parser, "internal error: field element type must be an ast_value");
5268 snprintf(name, sizeof(name), "%s##SETF", var->name);
5269 if (!parser_create_array_field_setter(parser, array, name))
5272 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5273 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5274 tfield->expression.next = telem;
5275 snprintf(name, sizeof(name), "%s##GETFP", var->name);
5276 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5284 if (parser->tok == ';') {
5285 ast_delete(basetype);
5286 if (!parser_next(parser)) {
5287 parseerror(parser, "error after variable declaration");
5293 if (parser->tok == ',')
5297 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5300 parseerror(parser, "missing comma or semicolon while parsing variables");
5304 if (localblock && opts.standard == COMPILER_QCC) {
5305 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5306 "initializing expression turns variable `%s` into a constant in this standard",
5313 if (parser->tok != '{') {
5314 if (parser->tok != '=') {
5315 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5319 if (!parser_next(parser)) {
5320 parseerror(parser, "error parsing initializer");
5324 else if (opts.standard == COMPILER_QCC) {
5325 parseerror(parser, "expected '=' before function body in this standard");
5328 if (parser->tok == '#') {
5329 ast_function *func = NULL;
5332 parseerror(parser, "cannot declare builtins within functions");
5335 if (var->expression.vtype != TYPE_FUNCTION) {
5336 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5339 if (!parser_next(parser)) {
5340 parseerror(parser, "expected builtin number");
5343 if (parser->tok != TOKEN_INTCONST) {
5344 parseerror(parser, "builtin number must be an integer constant");
5347 if (parser_token(parser)->constval.i < 0) {
5348 parseerror(parser, "builtin number must be an integer greater than zero");
5352 if (var->hasvalue) {
5353 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5354 "builtin `%s` has already been defined\n"
5355 " -> previous declaration here: %s:%i",
5356 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5360 func = ast_function_new(ast_ctx(var), var->name, var);
5362 parseerror(parser, "failed to allocate function for `%s`", var->name);
5365 vec_push(parser->functions, func);
5367 func->builtin = -parser_token(parser)->constval.i-1;
5370 if (!parser_next(parser)) {
5371 parseerror(parser, "expected comma or semicolon");
5373 ast_function_delete(func);
5374 var->constval.vfunc = NULL;
5378 else if (parser->tok == '{' || parser->tok == '[')
5381 parseerror(parser, "cannot declare functions within functions");
5386 ast_ctx(proto) = parser_ctx(parser);
5388 if (!parse_function_body(parser, var))
5390 ast_delete(basetype);
5391 for (i = 0; i < vec_size(parser->gotos); ++i)
5392 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5393 vec_free(parser->gotos);
5394 vec_free(parser->labels);
5397 ast_expression *cexp;
5400 cexp = parse_expression_leave(parser, true, false, false);
5405 cval = (ast_value*)cexp;
5406 if (cval != parser->nil &&
5407 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5410 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5414 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5415 qualifier != CV_VAR)
5417 var->cvq = CV_CONST;
5419 if (cval == parser->nil)
5420 var->expression.flags |= AST_FLAG_INITIALIZED;
5423 var->hasvalue = true;
5424 if (cval->expression.vtype == TYPE_STRING)
5425 var->constval.vstring = parser_strdup(cval->constval.vstring);
5426 else if (cval->expression.vtype == TYPE_FIELD)
5427 var->constval.vfield = cval;
5429 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5435 shunt sy = { NULL, NULL };
5438 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5439 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5440 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5441 if (!parser_sy_apply_operator(parser, &sy))
5444 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5445 parseerror(parser, "internal error: leaked operands");
5446 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5456 if (parser->tok == ',') {
5457 if (!parser_next(parser)) {
5458 parseerror(parser, "expected another variable");
5462 if (parser->tok != TOKEN_IDENT) {
5463 parseerror(parser, "expected another variable");
5466 var = ast_value_copy(basetype);
5468 ast_value_set_name(var, parser_tokval(parser));
5469 if (!parser_next(parser)) {
5470 parseerror(parser, "error parsing variable declaration");
5476 if (parser->tok != ';') {
5477 parseerror(parser, "missing semicolon after variables");
5481 if (!parser_next(parser)) {
5482 parseerror(parser, "parse error after variable declaration");
5486 ast_delete(basetype);
5490 if (cleanvar && var)
5492 ast_delete(basetype);
5496 ast_delete(basetype);
5497 if (cleanvar && var)
5499 if (me[0]) ast_member_delete(me[0]);
5500 if (me[1]) ast_member_delete(me[1]);
5501 if (me[2]) ast_member_delete(me[2]);
5505 static bool parser_global_statement(parser_t *parser)
5509 bool is_static = false;
5510 uint32_t qflags = 0;
5511 ast_value *istype = NULL;
5512 char *vstring = NULL;
5514 if (parser->tok == TOKEN_IDENT)
5515 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5517 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5519 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5521 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5523 if (cvq == CV_WRONG)
5525 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5527 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5529 return parse_enum(parser);
5531 else if (parser->tok == TOKEN_KEYWORD)
5533 if (!strcmp(parser_tokval(parser), "typedef")) {
5534 if (!parser_next(parser)) {
5535 parseerror(parser, "expected type definition after 'typedef'");
5538 return parse_typedef(parser);
5540 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5543 else if (parser->tok == '#')
5545 return parse_pragma(parser);
5547 else if (parser->tok == '$')
5549 if (!parser_next(parser)) {
5550 parseerror(parser, "parse error");
5556 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
5562 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5564 return util_crc16(old, str, strlen(str));
5567 static void progdefs_crc_file(const char *str)
5569 /* write to progdefs.h here */
5573 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5575 old = progdefs_crc_sum(old, str);
5576 progdefs_crc_file(str);
5580 static void generate_checksum(parser_t *parser)
5582 uint16_t crc = 0xFFFF;
5586 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5587 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5589 progdefs_crc_file("\tint\tpad;\n");
5590 progdefs_crc_file("\tint\tofs_return[3];\n");
5591 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5592 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5593 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5594 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5595 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5596 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5597 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5598 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5600 for (i = 0; i < parser->crc_globals; ++i) {
5601 if (!ast_istype(parser->globals[i], ast_value))
5603 value = (ast_value*)(parser->globals[i]);
5604 switch (value->expression.vtype) {
5605 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5606 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5607 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5608 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5610 crc = progdefs_crc_both(crc, "\tint\t");
5613 crc = progdefs_crc_both(crc, value->name);
5614 crc = progdefs_crc_both(crc, ";\n");
5616 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5617 for (i = 0; i < parser->crc_fields; ++i) {
5618 if (!ast_istype(parser->fields[i], ast_value))
5620 value = (ast_value*)(parser->fields[i]);
5621 switch (value->expression.next->expression.vtype) {
5622 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5623 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5624 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5625 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5627 crc = progdefs_crc_both(crc, "\tint\t");
5630 crc = progdefs_crc_both(crc, value->name);
5631 crc = progdefs_crc_both(crc, ";\n");
5633 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5638 static parser_t *parser;
5645 parser = (parser_t*)mem_a(sizeof(parser_t));
5649 memset(parser, 0, sizeof(*parser));
5651 for (i = 0; i < operator_count; ++i) {
5652 if (operators[i].id == opid1('=')) {
5653 parser->assign_op = operators+i;
5657 if (!parser->assign_op) {
5658 printf("internal error: initializing parser: failed to find assign operator\n");
5663 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5664 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5665 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5666 vec_push(parser->_blocktypedefs, 0);
5669 vec_push(parser->correct_variables, correct_trie_new());
5670 vec_push(parser->correct_variables_score, NULL);
5672 empty_ctx.file = "<internal>";
5674 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
5675 parser->nil->cvq = CV_CONST;
5676 if (OPTS_FLAG(UNTYPED_NIL))
5677 util_htset(parser->htglobals, "nil", (void*)parser->nil);
5679 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
5680 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
5681 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
5683 if (opts.add_info) {
5684 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
5685 parser->reserved_version->cvq = CV_CONST;
5686 parser->reserved_version->hasvalue = true;
5687 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
5688 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
5690 parser->reserved_version = NULL;
5695 bool parser_compile()
5697 /* initial lexer/parser state */
5698 parser->lex->flags.noops = true;
5700 if (parser_next(parser))
5702 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
5704 if (!parser_global_statement(parser)) {
5705 if (parser->tok == TOKEN_EOF)
5706 parseerror(parser, "unexpected eof");
5707 else if (compile_errors)
5708 parseerror(parser, "there have been errors, bailing out");
5709 lex_close(parser->lex);
5715 parseerror(parser, "parse error");
5716 lex_close(parser->lex);
5721 lex_close(parser->lex);
5724 return !compile_errors;
5727 bool parser_compile_file(const char *filename)
5729 parser->lex = lex_open(filename);
5731 con_err("failed to open file \"%s\"\n", filename);
5734 return parser_compile();
5737 bool parser_compile_string(const char *name, const char *str, size_t len)
5739 parser->lex = lex_open_string(str, len, name);
5741 con_err("failed to create lexer for string \"%s\"\n", name);
5744 return parser_compile();
5747 void parser_cleanup()
5750 for (i = 0; i < vec_size(parser->accessors); ++i) {
5751 ast_delete(parser->accessors[i]->constval.vfunc);
5752 parser->accessors[i]->constval.vfunc = NULL;
5753 ast_delete(parser->accessors[i]);
5755 for (i = 0; i < vec_size(parser->functions); ++i) {
5756 ast_delete(parser->functions[i]);
5758 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5759 ast_delete(parser->imm_vector[i]);
5761 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5762 ast_delete(parser->imm_string[i]);
5764 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5765 ast_delete(parser->imm_float[i]);
5767 for (i = 0; i < vec_size(parser->fields); ++i) {
5768 ast_delete(parser->fields[i]);
5770 for (i = 0; i < vec_size(parser->globals); ++i) {
5771 ast_delete(parser->globals[i]);
5773 vec_free(parser->accessors);
5774 vec_free(parser->functions);
5775 vec_free(parser->imm_vector);
5776 vec_free(parser->imm_string);
5777 vec_free(parser->imm_float);
5778 vec_free(parser->globals);
5779 vec_free(parser->fields);
5781 for (i = 0; i < vec_size(parser->variables); ++i)
5782 util_htdel(parser->variables[i]);
5783 vec_free(parser->variables);
5784 vec_free(parser->_blocklocals);
5785 vec_free(parser->_locals);
5788 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
5789 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
5791 vec_free(parser->correct_variables);
5792 vec_free(parser->correct_variables_score);
5795 for (i = 0; i < vec_size(parser->_typedefs); ++i)
5796 ast_delete(parser->_typedefs[i]);
5797 vec_free(parser->_typedefs);
5798 for (i = 0; i < vec_size(parser->typedefs); ++i)
5799 util_htdel(parser->typedefs[i]);
5800 vec_free(parser->typedefs);
5801 vec_free(parser->_blocktypedefs);
5803 vec_free(parser->_block_ctx);
5805 vec_free(parser->labels);
5806 vec_free(parser->gotos);
5807 vec_free(parser->breaks);
5808 vec_free(parser->continues);
5810 ast_value_delete(parser->nil);
5812 ast_value_delete(parser->const_vec[0]);
5813 ast_value_delete(parser->const_vec[1]);
5814 ast_value_delete(parser->const_vec[2]);
5819 bool parser_finish(const char *output)
5825 if (compile_errors) {
5826 con_out("*** there were compile errors\n");
5830 ir = ir_builder_new("gmqcc_out");
5832 con_out("failed to allocate builder\n");
5836 for (i = 0; i < vec_size(parser->fields); ++i) {
5839 if (!ast_istype(parser->fields[i], ast_value))
5841 field = (ast_value*)parser->fields[i];
5842 hasvalue = field->hasvalue;
5843 field->hasvalue = false;
5844 if (!ast_global_codegen((ast_value*)field, ir, true)) {
5845 con_out("failed to generate field %s\n", field->name);
5846 ir_builder_delete(ir);
5851 ast_expression *subtype;
5852 field->hasvalue = true;
5853 subtype = field->expression.next;
5854 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
5855 if (subtype->expression.vtype == TYPE_FIELD)
5856 ifld->fieldtype = subtype->expression.next->expression.vtype;
5857 else if (subtype->expression.vtype == TYPE_FUNCTION)
5858 ifld->outtype = subtype->expression.next->expression.vtype;
5859 (void)!ir_value_set_field(field->ir_v, ifld);
5862 for (i = 0; i < vec_size(parser->globals); ++i) {
5864 if (!ast_istype(parser->globals[i], ast_value))
5866 asvalue = (ast_value*)(parser->globals[i]);
5867 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
5868 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
5869 "unused global: `%s`", asvalue->name);
5871 if (!ast_global_codegen(asvalue, ir, false)) {
5872 con_out("failed to generate global %s\n", asvalue->name);
5873 ir_builder_delete(ir);
5877 /* Build function vararg accessor ast tree now before generating
5878 * immediates, because the accessors may add new immediates
5880 for (i = 0; i < vec_size(parser->functions); ++i) {
5881 ast_function *f = parser->functions[i];
5883 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
5884 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
5885 if (!parser_create_array_setter_impl(parser, f->varargs)) {
5886 con_out("failed to generate vararg setter for %s\n", f->name);
5887 ir_builder_delete(ir);
5890 if (!parser_create_array_getter_impl(parser, f->varargs)) {
5891 con_out("failed to generate vararg getter for %s\n", f->name);
5892 ir_builder_delete(ir);
5896 ast_delete(f->varargs);
5901 /* Now we can generate immediates */
5902 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5903 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
5904 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
5905 ir_builder_delete(ir);
5909 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5910 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
5911 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
5912 ir_builder_delete(ir);
5916 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5917 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
5918 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
5919 ir_builder_delete(ir);
5923 for (i = 0; i < vec_size(parser->globals); ++i) {
5925 if (!ast_istype(parser->globals[i], ast_value))
5927 asvalue = (ast_value*)(parser->globals[i]);
5928 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
5930 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
5931 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
5932 "uninitialized constant: `%s`",
5934 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
5935 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
5936 "uninitialized global: `%s`",
5939 if (!ast_generate_accessors(asvalue, ir)) {
5940 ir_builder_delete(ir);
5944 for (i = 0; i < vec_size(parser->fields); ++i) {
5946 asvalue = (ast_value*)(parser->fields[i]->expression.next);
5948 if (!ast_istype((ast_expression*)asvalue, ast_value))
5950 if (asvalue->expression.vtype != TYPE_ARRAY)
5952 if (!ast_generate_accessors(asvalue, ir)) {
5953 ir_builder_delete(ir);
5957 if (parser->reserved_version &&
5958 !ast_global_codegen(parser->reserved_version, ir, false))
5960 con_out("failed to generate reserved::version");
5961 ir_builder_delete(ir);
5964 for (i = 0; i < vec_size(parser->functions); ++i) {
5965 ast_function *f = parser->functions[i];
5966 if (!ast_function_codegen(f, ir)) {
5967 con_out("failed to generate function %s\n", f->name);
5968 ir_builder_delete(ir);
5973 ir_builder_dump(ir, con_out);
5974 for (i = 0; i < vec_size(parser->functions); ++i) {
5975 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
5976 con_out("failed to finalize function %s\n", parser->functions[i]->name);
5977 ir_builder_delete(ir);
5982 if (compile_Werrors) {
5983 con_out("*** there were warnings treated as errors\n");
5984 compile_show_werrors();
5990 ir_builder_dump(ir, con_out);
5992 generate_checksum(parser);
5994 if (!ir_builder_generate(ir, output)) {
5995 con_out("*** failed to generate output file\n");
5996 ir_builder_delete(ir);
6001 ir_builder_delete(ir);