5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
6 * this software and associated documentation files (the "Software"), to deal in
7 * the Software without restriction, including without limitation the rights to
8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is furnished to do
10 * so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in all
13 * copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 #define PARSER_HT_FIELDS 0
30 #define PARSER_HT_GLOBALS 1
31 /* beginning of locals */
32 #define PARSER_HT_LOCALS 2
34 #define PARSER_HT_SIZE 1024
35 #define TYPEDEF_HT_SIZE 16
41 ast_expression **globals;
42 ast_expression **fields;
43 ast_function **functions;
44 ast_value **imm_float;
45 ast_value **imm_string;
46 ast_value **imm_vector;
49 /* must be deleted first, they reference immediates and values */
50 ast_value **accessors;
52 ast_value *imm_float_zero;
53 ast_value *imm_float_one;
54 ast_value *imm_vector_zero;
59 ast_function *function;
61 /* All the labels the function defined...
62 * Should they be in ast_function instead?
67 /* A list of hashtables for each scope */
73 /* not to be used directly, we use the hash table */
74 ast_expression **_locals;
76 ast_value **_typedefs;
77 size_t *_blocktypedefs;
82 /* we store the '=' operator info */
83 const oper_info *assign_op;
85 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
86 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
87 * anything else: type error
91 /* Keep track of our ternary vs parenthesis nesting state.
92 * If we reach a 'comma' operator in a ternary without a paren,
93 * we shall trigger -Wternary-precedence.
95 enum { POT_PAREN, POT_TERNARY1, POT_TERNARY2 } *pot;
101 static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10;
103 static void parser_enterblock(parser_t *parser);
104 static bool parser_leaveblock(parser_t *parser);
105 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
106 static bool parse_typedef(parser_t *parser);
107 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn);
108 static ast_block* parse_block(parser_t *parser);
109 static bool parse_block_into(parser_t *parser, ast_block *block);
110 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
111 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
112 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
113 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
115 static void parseerror(parser_t *parser, const char *fmt, ...)
122 con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap);
126 /* returns true if it counts as an error */
127 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
132 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
137 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
142 r = vcompile_warning(ctx, warntype, fmt, ap);
147 /**********************************************************************
148 * some maths used for constant folding
151 vector vec3_add(vector a, vector b)
160 vector vec3_sub(vector a, vector b)
169 qcfloat vec3_mulvv(vector a, vector b)
171 return (a.x * b.x + a.y * b.y + a.z * b.z);
174 vector vec3_mulvf(vector a, float b)
183 /**********************************************************************
187 bool parser_next(parser_t *parser)
189 /* lex_do kills the previous token */
190 parser->tok = lex_do(parser->lex);
191 if (parser->tok == TOKEN_EOF)
193 if (parser->tok >= TOKEN_ERROR) {
194 parseerror(parser, "lex error");
200 #define parser_tokval(p) ((p)->lex->tok.value)
201 #define parser_token(p) (&((p)->lex->tok))
202 #define parser_ctx(p) ((p)->lex->tok.ctx)
204 static ast_value* parser_const_float(parser_t *parser, double d)
208 for (i = 0; i < vec_size(parser->imm_float); ++i) {
209 const double compare = parser->imm_float[i]->constval.vfloat;
210 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
211 return parser->imm_float[i];
213 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
215 out->hasvalue = true;
216 out->constval.vfloat = d;
217 vec_push(parser->imm_float, out);
221 static ast_value* parser_const_float_0(parser_t *parser)
223 if (!parser->imm_float_zero)
224 parser->imm_float_zero = parser_const_float(parser, 0);
225 return parser->imm_float_zero;
228 static ast_value* parser_const_float_1(parser_t *parser)
230 if (!parser->imm_float_one)
231 parser->imm_float_one = parser_const_float(parser, 1);
232 return parser->imm_float_one;
235 static char *parser_strdup(const char *str)
238 /* actually dup empty strings */
239 char *out = mem_a(1);
243 return util_strdup(str);
246 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
250 for (i = 0; i < vec_size(parser->imm_string); ++i) {
251 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
252 return parser->imm_string[i];
256 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
257 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
259 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
261 out->hasvalue = true;
262 out->constval.vstring = parser_strdup(str);
263 vec_push(parser->imm_string, out);
267 static ast_value* parser_const_vector(parser_t *parser, vector v)
271 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
272 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
273 return parser->imm_vector[i];
275 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
277 out->hasvalue = true;
278 out->constval.vvec = v;
279 vec_push(parser->imm_vector, out);
283 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
289 return parser_const_vector(parser, v);
292 static ast_value* parser_const_vector_0(parser_t *parser)
294 if (!parser->imm_vector_zero)
295 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
296 return parser->imm_vector_zero;
299 static ast_expression* parser_find_field(parser_t *parser, const char *name)
301 return util_htget(parser->htfields, name);
304 static ast_expression* parser_find_global(parser_t *parser, const char *name)
306 return util_htget(parser->htglobals, name);
309 static ast_expression* parser_find_param(parser_t *parser, const char *name)
313 if (!parser->function)
315 fun = parser->function->vtype;
316 for (i = 0; i < vec_size(fun->expression.params); ++i) {
317 if (!strcmp(fun->expression.params[i]->name, name))
318 return (ast_expression*)(fun->expression.params[i]);
323 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
328 hash = util_hthash(parser->htglobals, name);
331 for (i = vec_size(parser->variables); i > upto;) {
333 if ( (e = util_htgeth(parser->variables[i], name, hash)) )
337 return parser_find_param(parser, name);
340 static ast_expression* parser_find_var(parser_t *parser, const char *name)
344 v = parser_find_local(parser, name, 0, &dummy);
345 if (!v) v = parser_find_global(parser, name);
349 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
353 hash = util_hthash(parser->typedefs[0], name);
355 for (i = vec_size(parser->typedefs); i > upto;) {
357 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
365 size_t etype; /* 0 = expression, others are operators */
369 ast_block *block; /* for commas and function calls */
378 #define SY_PAREN_EXPR '('
379 #define SY_PAREN_FUNC 'f'
380 #define SY_PAREN_INDEX '['
381 #define SY_PAREN_TERNARY '?'
383 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
394 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
398 e.out = (ast_expression*)v;
405 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
407 e.etype = 1 + (op - operators);
416 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
428 # define DEBUGSHUNTDO(x) x
430 # define DEBUGSHUNTDO(x)
433 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
434 * so we need to rotate it to become ent.(foo[n]).
436 static bool rotate_entfield_array_index_nodes(ast_expression **out)
438 ast_array_index *index;
439 ast_entfield *entfield;
443 ast_expression *entity;
445 lex_ctx ctx = ast_ctx(*out);
447 if (!ast_istype(*out, ast_array_index))
449 index = (ast_array_index*)*out;
451 if (!ast_istype(index->array, ast_entfield))
453 entfield = (ast_entfield*)index->array;
455 if (!ast_istype(entfield->field, ast_value))
457 field = (ast_value*)entfield->field;
460 entity = entfield->entity;
464 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
465 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
466 *out = (ast_expression*)entfield;
471 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
473 switch (v->expression.vtype) {
475 return !!v->constval.vfloat;
477 return !!v->constval.vint;
479 if (OPTS_FLAG(CORRECT_LOGIC))
480 return v->constval.vvec.x &&
481 v->constval.vvec.y &&
484 return !!(v->constval.vvec.x);
486 if (!v->constval.vstring)
488 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
490 return !!v->constval.vstring[0];
492 return !!v->constval.ventity;
494 return !!v->constval.vfield;
496 compile_error(ctx, "internal error: immediate_is_true on invalid type");
497 return !!v->constval.vfunc;
501 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
505 ast_expression *out = NULL;
506 ast_expression *exprs[3];
507 ast_block *blocks[3];
508 ast_value *asvalue[3];
509 ast_binstore *asbinstore;
510 size_t i, assignop, addop, subop;
511 qcint generated_op = 0;
516 if (!vec_size(sy->ops)) {
517 parseerror(parser, "internal error: missing operator");
521 if (vec_last(sy->ops).paren) {
522 parseerror(parser, "unmatched parenthesis");
526 op = &operators[vec_last(sy->ops).etype - 1];
527 ctx = vec_last(sy->ops).ctx;
529 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
531 if (vec_size(sy->out) < op->operands) {
532 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
533 op->op, (int)op->id);
537 vec_shrinkby(sy->ops, 1);
539 /* op(:?) has no input and no output */
543 vec_shrinkby(sy->out, op->operands);
544 for (i = 0; i < op->operands; ++i) {
545 exprs[i] = sy->out[vec_size(sy->out)+i].out;
546 blocks[i] = sy->out[vec_size(sy->out)+i].block;
547 asvalue[i] = (ast_value*)exprs[i];
550 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
551 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
555 #define NotSameType(T) \
556 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
557 exprs[0]->expression.vtype != T)
558 #define CanConstFold1(A) \
559 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
560 (A)->expression.vtype != TYPE_FUNCTION)
561 #define CanConstFold(A, B) \
562 (CanConstFold1(A) && CanConstFold1(B))
563 #define ConstV(i) (asvalue[(i)]->constval.vvec)
564 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
565 #define ConstS(i) (asvalue[(i)]->constval.vstring)
569 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
573 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
574 if (exprs[1]->expression.vtype != TYPE_FIELD) {
575 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
578 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
580 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
581 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
585 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
591 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
592 !(exprs[0]->expression.vtype == TYPE_FIELD &&
593 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
595 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
596 parseerror(parser, "cannot index value of type %s", ty1);
599 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
600 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
601 parseerror(parser, "index must be of type float, not %s", ty1);
604 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
605 if (rotate_entfield_array_index_nodes(&out))
608 /* This is not broken in fteqcc anymore */
609 if (opts.standard != COMPILER_GMQCC) {
610 /* this error doesn't need to make us bail out */
611 (void)!parsewarning(parser, WARN_EXTENSIONS,
612 "accessing array-field members of an entity without parenthesis\n"
613 " -> this is an extension from -std=gmqcc");
621 if (!ast_block_add_expr(blocks[0], exprs[1]))
624 blocks[0] = ast_block_new(ctx);
625 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
626 !ast_block_add_expr(blocks[0], exprs[1]))
631 if (!ast_block_set_type(blocks[0], exprs[1]))
634 vec_push(sy->out, syblock(ctx, blocks[0]));
641 switch (exprs[0]->expression.vtype) {
643 if (CanConstFold1(exprs[0]))
644 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
646 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
647 (ast_expression*)parser_const_float_0(parser),
651 if (CanConstFold1(exprs[0]))
652 out = (ast_expression*)parser_const_vector_f(parser,
653 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
655 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
656 (ast_expression*)parser_const_vector_0(parser),
660 parseerror(parser, "invalid types used in expression: cannot negate type %s",
661 type_name[exprs[0]->expression.vtype]);
667 switch (exprs[0]->expression.vtype) {
669 if (CanConstFold1(exprs[0]))
670 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
672 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
675 if (CanConstFold1(exprs[0]))
676 out = (ast_expression*)parser_const_float(parser,
677 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
679 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
682 if (CanConstFold1(exprs[0])) {
683 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
684 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
686 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
688 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
689 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
691 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
694 /* we don't constant-fold NOT for these types */
696 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
699 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
702 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
703 type_name[exprs[0]->expression.vtype]);
709 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
710 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
712 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
713 type_name[exprs[0]->expression.vtype],
714 type_name[exprs[1]->expression.vtype]);
717 switch (exprs[0]->expression.vtype) {
719 if (CanConstFold(exprs[0], exprs[1]))
721 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
724 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
727 if (CanConstFold(exprs[0], exprs[1]))
728 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
730 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
733 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
734 type_name[exprs[0]->expression.vtype],
735 type_name[exprs[1]->expression.vtype]);
740 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
741 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
743 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
744 type_name[exprs[1]->expression.vtype],
745 type_name[exprs[0]->expression.vtype]);
748 switch (exprs[0]->expression.vtype) {
750 if (CanConstFold(exprs[0], exprs[1]))
751 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
753 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
756 if (CanConstFold(exprs[0], exprs[1]))
757 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
759 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
762 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
763 type_name[exprs[1]->expression.vtype],
764 type_name[exprs[0]->expression.vtype]);
769 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
770 exprs[0]->expression.vtype != TYPE_VECTOR &&
771 exprs[0]->expression.vtype != TYPE_FLOAT &&
772 exprs[1]->expression.vtype != TYPE_VECTOR &&
773 exprs[1]->expression.vtype != TYPE_FLOAT)
775 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
776 type_name[exprs[1]->expression.vtype],
777 type_name[exprs[0]->expression.vtype]);
780 switch (exprs[0]->expression.vtype) {
782 if (exprs[1]->expression.vtype == TYPE_VECTOR)
784 if (CanConstFold(exprs[0], exprs[1]))
785 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
787 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
791 if (CanConstFold(exprs[0], exprs[1]))
792 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
794 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
798 if (exprs[1]->expression.vtype == TYPE_FLOAT)
800 if (CanConstFold(exprs[0], exprs[1]))
801 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
803 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
807 if (CanConstFold(exprs[0], exprs[1]))
808 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
810 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
814 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
815 type_name[exprs[1]->expression.vtype],
816 type_name[exprs[0]->expression.vtype]);
821 if (NotSameType(TYPE_FLOAT)) {
822 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
823 type_name[exprs[0]->expression.vtype],
824 type_name[exprs[1]->expression.vtype]);
827 if (CanConstFold(exprs[0], exprs[1]))
828 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
830 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
834 parseerror(parser, "qc does not have a modulo operator");
838 if (NotSameType(TYPE_FLOAT)) {
839 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
840 type_name[exprs[0]->expression.vtype],
841 type_name[exprs[1]->expression.vtype]);
844 if (CanConstFold(exprs[0], exprs[1]))
845 out = (ast_expression*)parser_const_float(parser,
846 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
847 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
849 out = (ast_expression*)ast_binary_new(ctx,
850 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
854 parseerror(parser, "TODO: bitxor");
859 case opid3('<','<','='):
860 case opid3('>','>','='):
861 parseerror(parser, "TODO: shifts");
865 generated_op += 1; /* INSTR_OR */
867 generated_op += INSTR_AND;
869 if (NotSameType(TYPE_FLOAT)) {
870 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
871 type_name[exprs[0]->expression.vtype],
872 type_name[exprs[1]->expression.vtype]);
873 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
874 parseerror(parser, "TODO: optional early out");
878 if (CanConstFold(exprs[0], exprs[1]))
880 if (OPTS_FLAG(PERL_LOGIC)) {
881 if (immediate_is_true(ctx, asvalue[0]))
885 out = (ast_expression*)parser_const_float(parser,
886 ( (generated_op == INSTR_OR)
887 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
888 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
893 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
894 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
895 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
896 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
899 if (OPTS_FLAG(CORRECT_LOGIC)) {
900 /* non-floats need to be NOTed */
901 for (i = 0; i < 2; ++i) {
902 if (exprs[i]->expression.vtype != TYPE_FLOAT) {
903 if (type_not_instr[exprs[i]->expression.vtype] == AINSTR_END) {
904 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
905 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
906 parseerror(parser, "invalid types for logical operation with -fcorrect-logic: %s and %s", ty1, ty2);
909 out = (ast_expression*)ast_unary_new(ctx, type_not_instr[exprs[i]->expression.vtype], exprs[i]);
912 exprs[i] = out; out = NULL;
914 if (OPTS_FLAG(PERL_LOGIC))
918 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
923 if (vec_last(parser->pot) != POT_TERNARY2) {
924 parseerror(parser, "mismatched parenthesis/ternary");
927 vec_pop(parser->pot);
928 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
929 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
930 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
931 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
934 if (CanConstFold1(exprs[0]))
935 out = (ConstF(0) ? exprs[1] : exprs[2]);
937 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
941 generated_op += 1; /* INSTR_GT */
943 generated_op += 1; /* INSTR_LT */
944 case opid2('>', '='):
945 generated_op += 1; /* INSTR_GE */
946 case opid2('<', '='):
947 generated_op += INSTR_LE;
948 if (NotSameType(TYPE_FLOAT)) {
949 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
950 type_name[exprs[0]->expression.vtype],
951 type_name[exprs[1]->expression.vtype]);
954 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
956 case opid2('!', '='):
957 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
958 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
959 type_name[exprs[0]->expression.vtype],
960 type_name[exprs[1]->expression.vtype]);
963 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
965 case opid2('=', '='):
966 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
967 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
968 type_name[exprs[0]->expression.vtype],
969 type_name[exprs[1]->expression.vtype]);
972 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
976 if (ast_istype(exprs[0], ast_entfield)) {
977 ast_expression *field = ((ast_entfield*)exprs[0])->field;
978 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
979 exprs[0]->expression.vtype == TYPE_FIELD &&
980 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
982 assignop = type_storep_instr[TYPE_VECTOR];
985 assignop = type_storep_instr[exprs[0]->expression.vtype];
986 if (assignop == AINSTR_END ||
987 !ast_compare_type(field->expression.next, exprs[1]))
989 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
990 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
991 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
992 field->expression.next->expression.vtype == TYPE_FUNCTION &&
993 exprs[1]->expression.vtype == TYPE_FUNCTION)
995 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
996 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
1002 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1007 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1008 exprs[0]->expression.vtype == TYPE_FIELD &&
1009 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1011 assignop = type_store_instr[TYPE_VECTOR];
1014 assignop = type_store_instr[exprs[0]->expression.vtype];
1017 if (assignop == AINSTR_END) {
1018 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1019 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1020 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1022 else if (!ast_compare_type(exprs[0], exprs[1])) {
1023 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1024 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1025 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1026 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1027 exprs[1]->expression.vtype == TYPE_FUNCTION)
1029 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1030 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
1036 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1039 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1040 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1042 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1044 case opid3('+','+','P'):
1045 case opid3('-','-','P'):
1047 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1048 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1049 parseerror(parser, "invalid type for prefix increment: %s", ty1);
1052 if (op->id == opid3('+','+','P'))
1053 addop = INSTR_ADD_F;
1055 addop = INSTR_SUB_F;
1056 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1057 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1059 if (ast_istype(exprs[0], ast_entfield)) {
1060 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1062 (ast_expression*)parser_const_float_1(parser));
1064 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1066 (ast_expression*)parser_const_float_1(parser));
1069 case opid3('S','+','+'):
1070 case opid3('S','-','-'):
1072 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1073 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1074 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1077 if (op->id == opid3('S','+','+')) {
1078 addop = INSTR_ADD_F;
1079 subop = INSTR_SUB_F;
1081 addop = INSTR_SUB_F;
1082 subop = INSTR_ADD_F;
1084 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1085 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1087 if (ast_istype(exprs[0], ast_entfield)) {
1088 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1090 (ast_expression*)parser_const_float_1(parser));
1092 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1094 (ast_expression*)parser_const_float_1(parser));
1098 out = (ast_expression*)ast_binary_new(ctx, subop,
1100 (ast_expression*)parser_const_float_1(parser));
1102 case opid2('+','='):
1103 case opid2('-','='):
1104 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1105 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1107 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1108 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1109 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1113 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1114 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1116 if (ast_istype(exprs[0], ast_entfield))
1117 assignop = type_storep_instr[exprs[0]->expression.vtype];
1119 assignop = type_store_instr[exprs[0]->expression.vtype];
1120 switch (exprs[0]->expression.vtype) {
1122 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1123 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1124 exprs[0], exprs[1]);
1127 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1128 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1129 exprs[0], exprs[1]);
1132 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1133 type_name[exprs[0]->expression.vtype],
1134 type_name[exprs[1]->expression.vtype]);
1138 case opid2('*','='):
1139 case opid2('/','='):
1140 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1141 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1142 exprs[0]->expression.vtype == TYPE_VECTOR))
1144 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1145 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1146 parseerror(parser, "invalid types used in expression: %s and %s",
1150 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1151 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1153 if (ast_istype(exprs[0], ast_entfield))
1154 assignop = type_storep_instr[exprs[0]->expression.vtype];
1156 assignop = type_store_instr[exprs[0]->expression.vtype];
1157 switch (exprs[0]->expression.vtype) {
1159 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1160 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1161 exprs[0], exprs[1]);
1164 if (op->id == opid2('*','=')) {
1165 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1166 exprs[0], exprs[1]);
1168 /* there's no DIV_VF */
1169 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1170 (ast_expression*)parser_const_float_1(parser),
1174 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1179 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1180 type_name[exprs[0]->expression.vtype],
1181 type_name[exprs[1]->expression.vtype]);
1185 case opid2('&','='):
1186 case opid2('|','='):
1187 if (NotSameType(TYPE_FLOAT)) {
1188 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1189 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1190 parseerror(parser, "invalid types used in expression: %s and %s",
1194 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1195 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1197 if (ast_istype(exprs[0], ast_entfield))
1198 assignop = type_storep_instr[exprs[0]->expression.vtype];
1200 assignop = type_store_instr[exprs[0]->expression.vtype];
1201 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1202 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1203 exprs[0], exprs[1]);
1205 case opid3('&','~','='):
1206 /* This is like: a &= ~(b);
1207 * But QC has no bitwise-not, so we implement it as
1210 if (NotSameType(TYPE_FLOAT)) {
1211 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1212 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1213 parseerror(parser, "invalid types used in expression: %s and %s",
1217 if (ast_istype(exprs[0], ast_entfield))
1218 assignop = type_storep_instr[exprs[0]->expression.vtype];
1220 assignop = type_store_instr[exprs[0]->expression.vtype];
1221 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1224 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1225 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1227 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1228 asbinstore->keep_dest = true;
1229 out = (ast_expression*)asbinstore;
1235 parseerror(parser, "failed to apply operand %s", op->op);
1239 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1240 vec_push(sy->out, syexp(ctx, out));
1244 static bool parser_close_call(parser_t *parser, shunt *sy)
1246 /* was a function call */
1247 ast_expression *fun;
1253 vec_shrinkby(sy->ops, 1);
1254 fid = sy->ops[vec_size(sy->ops)].off;
1256 /* out[fid] is the function
1257 * everything above is parameters...
1258 * 0 params = nothing
1259 * 1 params = ast_expression
1263 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1264 parseerror(parser, "internal error: function call needs function and parameter list...");
1268 fun = sy->out[fid].out;
1270 if (fun == intrinsic_debug_typestring) {
1272 if (fid+2 != vec_size(sy->out) ||
1273 vec_last(sy->out).block)
1275 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1278 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1279 ast_unref(vec_last(sy->out).out);
1280 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1281 (ast_expression*)parser_const_string(parser, ty, false));
1282 vec_shrinkby(sy->out, 1);
1286 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1288 parseerror(parser, "internal error: failed to create ast_call node");
1292 if (fid+1 == vec_size(sy->out)) {
1295 } else if (fid+2 == vec_size(sy->out)) {
1297 vec_shrinkby(sy->out, 1);
1298 params = sy->out[vec_size(sy->out)].block;
1302 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1304 paramcount = vec_size(params->exprs);
1305 call->params = params->exprs;
1306 params->exprs = NULL;
1309 if (!ast_call_check_types(call))
1312 parseerror(parser, "invalid function call");
1316 /* overwrite fid, the function, with a call */
1317 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1319 if (fun->expression.vtype != TYPE_FUNCTION) {
1320 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1324 if (!fun->expression.next) {
1325 parseerror(parser, "could not determine function return type");
1328 if (vec_size(fun->expression.params) != paramcount &&
1329 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1330 vec_size(fun->expression.params) < paramcount))
1333 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1335 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1336 if (opts.standard == COMPILER_GMQCC)
1339 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1340 " -> `%s` has been declared here: %s:%i",
1341 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1342 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1344 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1345 " -> it has been declared here: %s:%i",
1346 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1347 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1353 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1354 "too %s parameters for call to %s: expected %i, got %i\n"
1355 " -> `%s` has been declared here: %s:%i",
1356 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1357 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1359 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1360 "too %s parameters for function call: expected %i, got %i\n"
1361 " -> it has been declared here: %s:%i",
1362 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1363 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1371 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1373 if (!vec_size(sy->ops)) {
1374 parseerror(parser, "unmatched closing paren");
1377 /* this would for bit a + (x) because there are no operators inside (x)
1378 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1379 parseerror(parser, "empty parenthesis expression");
1383 while (vec_size(sy->ops)) {
1384 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1385 if (!parser_close_call(parser, sy))
1389 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1390 vec_shrinkby(sy->ops, 1);
1391 return !functions_only;
1393 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1396 /* pop off the parenthesis */
1397 vec_shrinkby(sy->ops, 1);
1398 /* then apply the index operator */
1399 if (!parser_sy_apply_operator(parser, sy))
1403 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1406 if (vec_last(parser->pot) != POT_TERNARY1) {
1407 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1410 vec_last(parser->pot) = POT_TERNARY2;
1411 /* pop off the parenthesis */
1412 vec_shrinkby(sy->ops, 1);
1415 if (!parser_sy_apply_operator(parser, sy))
1421 static void parser_reclassify_token(parser_t *parser)
1424 for (i = 0; i < operator_count; ++i) {
1425 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1426 parser->tok = TOKEN_OPERATOR;
1432 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1434 ast_expression *expr = NULL;
1436 bool wantop = false;
1437 bool gotmemberof = false;
1439 /* count the parens because an if starts with one, so the
1440 * end of a condition is an unmatched closing paren
1448 parser->lex->flags.noops = false;
1450 parser_reclassify_token(parser);
1455 gotmemberof = false;
1457 parser->memberof = 0;
1459 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1460 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1462 /* a translatable string */
1466 parseerror(parser, "expected operator or end of statement, got constant");
1470 parser->lex->flags.noops = true;
1471 if (!parser_next(parser) || parser->tok != '(') {
1472 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1475 parser->lex->flags.noops = false;
1476 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1477 parseerror(parser, "expected a constant string in translatable-string extension");
1480 val = parser_const_string(parser, parser_tokval(parser), true);
1484 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1485 DEBUGSHUNTDO(con_out("push string\n"));
1487 if (!parser_next(parser) || parser->tok != ')') {
1488 parseerror(parser, "expected closing paren after translatable string");
1492 else if (parser->tok == TOKEN_IDENT)
1494 ast_expression *var;
1496 parseerror(parser, "expected operator or end of statement");
1501 if (opts.standard == COMPILER_GMQCC)
1503 if (parser->memberof == TYPE_ENTITY) {
1504 /* still get vars first since there could be a fieldpointer */
1505 var = parser_find_var(parser, parser_tokval(parser));
1507 var = parser_find_field(parser, parser_tokval(parser));
1509 else if (parser->memberof == TYPE_VECTOR)
1511 parseerror(parser, "TODO: implement effective vector member access");
1514 else if (parser->memberof) {
1515 parseerror(parser, "namespace for member not found");
1519 var = parser_find_var(parser, parser_tokval(parser));
1521 var = parser_find_var(parser, parser_tokval(parser));
1523 var = parser_find_field(parser, parser_tokval(parser));
1527 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1528 var = (ast_expression*)intrinsic_debug_typestring;
1533 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1539 if (ast_istype(var, ast_value)) {
1540 ((ast_value*)var)->uses++;
1542 else if (ast_istype(var, ast_member)) {
1543 ast_member *mem = (ast_member*)var;
1544 if (ast_istype(mem->owner, ast_value))
1545 ((ast_value*)(mem->owner))->uses++;
1548 vec_push(sy.out, syexp(parser_ctx(parser), var));
1549 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1551 else if (parser->tok == TOKEN_FLOATCONST) {
1554 parseerror(parser, "expected operator or end of statement, got constant");
1558 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1561 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1562 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1564 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1567 parseerror(parser, "expected operator or end of statement, got constant");
1571 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1574 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1575 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1577 else if (parser->tok == TOKEN_STRINGCONST) {
1580 parseerror(parser, "expected operator or end of statement, got constant");
1584 val = parser_const_string(parser, parser_tokval(parser), false);
1587 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1588 DEBUGSHUNTDO(con_out("push string\n"));
1590 else if (parser->tok == TOKEN_VECTORCONST) {
1593 parseerror(parser, "expected operator or end of statement, got constant");
1597 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1600 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1601 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1602 parser_token(parser)->constval.v.x,
1603 parser_token(parser)->constval.v.y,
1604 parser_token(parser)->constval.v.z));
1606 else if (parser->tok == '(') {
1607 parseerror(parser, "internal error: '(' should be classified as operator");
1610 else if (parser->tok == '[') {
1611 parseerror(parser, "internal error: '[' should be classified as operator");
1614 else if (parser->tok == ')') {
1616 DEBUGSHUNTDO(con_out("do[op] )\n"));
1620 /* we do expect an operator next */
1621 /* closing an opening paren */
1622 if (!parser_close_paren(parser, &sy, false))
1624 if (vec_last(parser->pot) != POT_PAREN) {
1625 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1628 vec_pop(parser->pot);
1630 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1634 /* allowed for function calls */
1635 if (!parser_close_paren(parser, &sy, true))
1637 if (vec_last(parser->pot) != POT_PAREN) {
1638 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1641 vec_pop(parser->pot);
1645 else if (parser->tok == ']') {
1647 parseerror(parser, "operand expected");
1651 if (!parser_close_paren(parser, &sy, false))
1653 if (vec_last(parser->pot) != POT_PAREN) {
1654 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1657 vec_pop(parser->pot);
1660 else if (parser->tok == TOKEN_TYPENAME) {
1661 parseerror(parser, "unexpected typename");
1664 else if (parser->tok != TOKEN_OPERATOR) {
1666 parseerror(parser, "expected operator or end of statement");
1673 /* classify the operator */
1674 const oper_info *op;
1675 const oper_info *olast = NULL;
1677 for (o = 0; o < operator_count; ++o) {
1678 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1679 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1680 !strcmp(parser_tokval(parser), operators[o].op))
1685 if (o == operator_count) {
1686 /* no operator found... must be the end of the statement */
1689 /* found an operator */
1692 /* when declaring variables, a comma starts a new variable */
1693 if (op->id == opid1(',') && !parens && stopatcomma) {
1694 /* fixup the token */
1699 /* a colon without a pervious question mark cannot be a ternary */
1700 if (!ternaries && op->id == opid2(':','?')) {
1705 if (op->id == opid1(',')) {
1706 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1707 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1711 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1712 olast = &operators[vec_last(sy.ops).etype-1];
1715 (op->prec < olast->prec) ||
1716 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1718 if (!parser_sy_apply_operator(parser, &sy))
1720 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1721 olast = &operators[vec_last(sy.ops).etype-1];
1726 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1727 /* for gmqcc standard: open up the namespace of the previous type */
1728 ast_expression *prevex = vec_last(sy.out).out;
1730 parseerror(parser, "unexpected member operator");
1733 if (prevex->expression.vtype == TYPE_ENTITY)
1734 parser->memberof = TYPE_ENTITY;
1735 else if (prevex->expression.vtype == TYPE_VECTOR)
1736 parser->memberof = TYPE_VECTOR;
1738 parseerror(parser, "type error: type has no members");
1744 if (op->id == opid1('(')) {
1746 size_t sycount = vec_size(sy.out);
1747 DEBUGSHUNTDO(con_out("push [op] (\n"));
1748 ++parens; vec_push(parser->pot, POT_PAREN);
1749 /* we expected an operator, this is the function-call operator */
1750 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1752 ++parens; vec_push(parser->pot, POT_PAREN);
1753 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1754 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1757 } else if (op->id == opid1('[')) {
1759 parseerror(parser, "unexpected array subscript");
1762 ++parens; vec_push(parser->pot, POT_PAREN);
1763 /* push both the operator and the paren, this makes life easier */
1764 vec_push(sy.ops, syop(parser_ctx(parser), op));
1765 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1767 } else if (op->id == opid2('?',':')) {
1768 vec_push(sy.ops, syop(parser_ctx(parser), op));
1769 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1772 vec_push(parser->pot, POT_TERNARY1);
1773 } else if (op->id == opid2(':','?')) {
1774 if (!vec_size(parser->pot)) {
1775 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1778 if (vec_last(parser->pot) != POT_TERNARY1) {
1779 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1782 if (!parser_close_paren(parser, &sy, false))
1784 vec_push(sy.ops, syop(parser_ctx(parser), op));
1788 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1789 vec_push(sy.ops, syop(parser_ctx(parser), op));
1790 wantop = !!(op->flags & OP_SUFFIX);
1793 if (!parser_next(parser)) {
1796 if (parser->tok == ';' ||
1797 (!parens && parser->tok == ']'))
1803 while (vec_size(sy.ops)) {
1804 if (!parser_sy_apply_operator(parser, &sy))
1808 parser->lex->flags.noops = true;
1809 if (!vec_size(sy.out)) {
1810 parseerror(parser, "empty expression");
1813 expr = sy.out[0].out;
1816 DEBUGSHUNTDO(con_out("shunt done\n"));
1817 if (vec_size(parser->pot)) {
1818 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1821 vec_free(parser->pot);
1825 parser->lex->flags.noops = true;
1831 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1833 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1836 if (!parser_next(parser)) {
1843 static void parser_enterblock(parser_t *parser)
1845 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1846 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1847 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1848 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1849 vec_push(parser->_block_ctx, parser_ctx(parser));
1852 static bool parser_leaveblock(parser_t *parser)
1855 size_t locals, typedefs;
1857 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1858 parseerror(parser, "internal error: parser_leaveblock with no block");
1862 util_htdel(vec_last(parser->variables));
1863 vec_pop(parser->variables);
1864 if (!vec_size(parser->_blocklocals)) {
1865 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1869 locals = vec_last(parser->_blocklocals);
1870 vec_pop(parser->_blocklocals);
1871 while (vec_size(parser->_locals) != locals) {
1872 ast_expression *e = vec_last(parser->_locals);
1873 ast_value *v = (ast_value*)e;
1874 vec_pop(parser->_locals);
1875 if (ast_istype(e, ast_value) && !v->uses) {
1876 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name)) {
1883 typedefs = vec_last(parser->_blocktypedefs);
1884 while (vec_size(parser->_typedefs) != typedefs) {
1885 ast_delete(vec_last(parser->_typedefs));
1886 vec_pop(parser->_typedefs);
1888 util_htdel(vec_last(parser->typedefs));
1889 vec_pop(parser->typedefs);
1891 vec_pop(parser->_block_ctx);
1895 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1897 vec_push(parser->_locals, e);
1898 util_htset(vec_last(parser->variables), name, (void*)e);
1901 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1904 ast_expression *cond, *ontrue, *onfalse = NULL;
1907 lex_ctx ctx = parser_ctx(parser);
1909 (void)block; /* not touching */
1911 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1912 if (!parser_next(parser)) {
1913 parseerror(parser, "expected condition or 'not'");
1916 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
1918 if (!parser_next(parser)) {
1919 parseerror(parser, "expected condition in parenthesis");
1923 if (parser->tok != '(') {
1924 parseerror(parser, "expected 'if' condition in parenthesis");
1927 /* parse into the expression */
1928 if (!parser_next(parser)) {
1929 parseerror(parser, "expected 'if' condition after opening paren");
1932 /* parse the condition */
1933 cond = parse_expression_leave(parser, false);
1937 if (parser->tok != ')') {
1938 parseerror(parser, "expected closing paren after 'if' condition");
1942 /* parse into the 'then' branch */
1943 if (!parser_next(parser)) {
1944 parseerror(parser, "expected statement for on-true branch of 'if'");
1948 if (!parse_statement_or_block(parser, &ontrue)) {
1952 /* check for an else */
1953 if (!strcmp(parser_tokval(parser), "else")) {
1954 /* parse into the 'else' branch */
1955 if (!parser_next(parser)) {
1956 parseerror(parser, "expected on-false branch after 'else'");
1961 if (!parse_statement_or_block(parser, &onfalse)) {
1969 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1971 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1972 *out = (ast_expression*)ifthen;
1976 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1979 ast_expression *cond, *ontrue;
1981 lex_ctx ctx = parser_ctx(parser);
1983 (void)block; /* not touching */
1985 /* skip the 'while' and check for opening paren */
1986 if (!parser_next(parser) || parser->tok != '(') {
1987 parseerror(parser, "expected 'while' condition in parenthesis");
1990 /* parse into the expression */
1991 if (!parser_next(parser)) {
1992 parseerror(parser, "expected 'while' condition after opening paren");
1995 /* parse the condition */
1996 cond = parse_expression_leave(parser, false);
2000 if (parser->tok != ')') {
2001 parseerror(parser, "expected closing paren after 'while' condition");
2005 /* parse into the 'then' branch */
2006 if (!parser_next(parser)) {
2007 parseerror(parser, "expected while-loop body");
2011 if (!parse_statement_or_block(parser, &ontrue)) {
2016 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
2017 *out = (ast_expression*)aloop;
2021 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2024 ast_expression *cond, *ontrue;
2026 lex_ctx ctx = parser_ctx(parser);
2028 (void)block; /* not touching */
2030 /* skip the 'do' and get the body */
2031 if (!parser_next(parser)) {
2032 parseerror(parser, "expected loop body");
2035 if (!parse_statement_or_block(parser, &ontrue))
2038 /* expect the "while" */
2039 if (parser->tok != TOKEN_KEYWORD ||
2040 strcmp(parser_tokval(parser), "while"))
2042 parseerror(parser, "expected 'while' and condition");
2047 /* skip the 'while' and check for opening paren */
2048 if (!parser_next(parser) || parser->tok != '(') {
2049 parseerror(parser, "expected 'while' condition in parenthesis");
2053 /* parse into the expression */
2054 if (!parser_next(parser)) {
2055 parseerror(parser, "expected 'while' condition after opening paren");
2059 /* parse the condition */
2060 cond = parse_expression_leave(parser, false);
2064 if (parser->tok != ')') {
2065 parseerror(parser, "expected closing paren after 'while' condition");
2071 if (!parser_next(parser) || parser->tok != ';') {
2072 parseerror(parser, "expected semicolon after condition");
2078 if (!parser_next(parser)) {
2079 parseerror(parser, "parse error");
2085 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
2086 *out = (ast_expression*)aloop;
2090 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2093 ast_expression *initexpr, *cond, *increment, *ontrue;
2097 lex_ctx ctx = parser_ctx(parser);
2099 parser_enterblock(parser);
2106 /* skip the 'while' and check for opening paren */
2107 if (!parser_next(parser) || parser->tok != '(') {
2108 parseerror(parser, "expected 'for' expressions in parenthesis");
2111 /* parse into the expression */
2112 if (!parser_next(parser)) {
2113 parseerror(parser, "expected 'for' initializer after opening paren");
2118 if (parser->tok == TOKEN_IDENT)
2119 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2121 if (typevar || parser->tok == TOKEN_TYPENAME) {
2122 if (opts.standard != COMPILER_GMQCC) {
2123 if (parsewarning(parser, WARN_EXTENSIONS,
2124 "current standard does not allow variable declarations in for-loop initializers"))
2127 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false))
2130 else if (parser->tok != ';')
2132 initexpr = parse_expression_leave(parser, false);
2137 /* move on to condition */
2138 if (parser->tok != ';') {
2139 parseerror(parser, "expected semicolon after for-loop initializer");
2142 if (!parser_next(parser)) {
2143 parseerror(parser, "expected for-loop condition");
2147 /* parse the condition */
2148 if (parser->tok != ';') {
2149 cond = parse_expression_leave(parser, false);
2154 /* move on to incrementor */
2155 if (parser->tok != ';') {
2156 parseerror(parser, "expected semicolon after for-loop initializer");
2159 if (!parser_next(parser)) {
2160 parseerror(parser, "expected for-loop condition");
2164 /* parse the incrementor */
2165 if (parser->tok != ')') {
2166 increment = parse_expression_leave(parser, false);
2169 if (!ast_side_effects(increment)) {
2170 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2176 if (parser->tok != ')') {
2177 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2180 /* parse into the 'then' branch */
2181 if (!parser_next(parser)) {
2182 parseerror(parser, "expected for-loop body");
2185 if (!parse_statement_or_block(parser, &ontrue))
2188 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
2189 *out = (ast_expression*)aloop;
2191 if (!parser_leaveblock(parser))
2195 if (initexpr) ast_delete(initexpr);
2196 if (cond) ast_delete(cond);
2197 if (increment) ast_delete(increment);
2198 (void)!parser_leaveblock(parser);
2202 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2204 ast_expression *exp = NULL;
2205 ast_return *ret = NULL;
2206 ast_value *expected = parser->function->vtype;
2208 lex_ctx ctx = parser_ctx(parser);
2210 (void)block; /* not touching */
2212 if (!parser_next(parser)) {
2213 parseerror(parser, "expected return expression");
2217 if (parser->tok != ';') {
2218 exp = parse_expression(parser, false);
2222 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2223 parseerror(parser, "return with invalid expression");
2226 ret = ast_return_new(ctx, exp);
2232 if (!parser_next(parser))
2233 parseerror(parser, "parse error");
2234 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2235 if (opts.standard != COMPILER_GMQCC)
2236 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2238 parseerror(parser, "return without value");
2240 ret = ast_return_new(ctx, NULL);
2242 *out = (ast_expression*)ret;
2246 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2248 lex_ctx ctx = parser_ctx(parser);
2250 (void)block; /* not touching */
2252 if (!parser_next(parser) || parser->tok != ';') {
2253 parseerror(parser, "expected semicolon");
2257 if (!parser_next(parser))
2258 parseerror(parser, "parse error");
2260 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
2264 /* returns true when it was a variable qualifier, false otherwise!
2265 * on error, cvq is set to CV_WRONG
2267 static bool parse_var_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *noreturn)
2269 bool had_const = false;
2270 bool had_var = false;
2271 bool had_noref = false;
2272 bool had_noreturn = false;
2275 if (!strcmp(parser_tokval(parser), "const"))
2277 else if (!strcmp(parser_tokval(parser), "var"))
2279 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2281 else if (!strcmp(parser_tokval(parser), "noref"))
2283 else if (!strcmp(parser_tokval(parser), "noreturn"))
2284 had_noreturn = true;
2285 else if (!had_const && !had_var && !had_noref && !had_noreturn) {
2290 if (!parser_next(parser))
2300 *noreturn = had_noreturn;
2303 parseerror(parser, "parse error after variable qualifier");
2308 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2310 ast_expression *operand;
2313 ast_switch *switchnode;
2314 ast_switch_case swcase;
2317 bool noref, noreturn;
2319 lex_ctx ctx = parser_ctx(parser);
2321 (void)block; /* not touching */
2324 /* parse over the opening paren */
2325 if (!parser_next(parser) || parser->tok != '(') {
2326 parseerror(parser, "expected switch operand in parenthesis");
2330 /* parse into the expression */
2331 if (!parser_next(parser)) {
2332 parseerror(parser, "expected switch operand");
2335 /* parse the operand */
2336 operand = parse_expression_leave(parser, false);
2340 switchnode = ast_switch_new(ctx, operand);
2343 if (parser->tok != ')') {
2344 ast_delete(switchnode);
2345 parseerror(parser, "expected closing paren after 'switch' operand");
2349 /* parse over the opening paren */
2350 if (!parser_next(parser) || parser->tok != '{') {
2351 ast_delete(switchnode);
2352 parseerror(parser, "expected list of cases");
2356 if (!parser_next(parser)) {
2357 ast_delete(switchnode);
2358 parseerror(parser, "expected 'case' or 'default'");
2362 /* new block; allow some variables to be declared here */
2363 parser_enterblock(parser);
2366 if (parser->tok == TOKEN_IDENT)
2367 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2368 if (typevar || parser->tok == TOKEN_TYPENAME) {
2369 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false)) {
2370 ast_delete(switchnode);
2375 if (parse_var_qualifiers(parser, true, &cvq, &noref, &noreturn))
2377 if (cvq == CV_WRONG) {
2378 ast_delete(switchnode);
2381 if (!parse_variable(parser, block, false, cvq, NULL, noref, noreturn)) {
2382 ast_delete(switchnode);
2391 while (parser->tok != '}') {
2392 ast_block *caseblock;
2394 if (parser->tok != TOKEN_KEYWORD) {
2395 ast_delete(switchnode);
2396 parseerror(parser, "expected 'case' or 'default'");
2399 if (!strcmp(parser_tokval(parser), "case")) {
2400 if (!parser_next(parser)) {
2401 ast_delete(switchnode);
2402 parseerror(parser, "expected expression for case");
2405 swcase.value = parse_expression_leave(parser, false);
2406 if (!swcase.value) {
2407 ast_delete(switchnode);
2408 parseerror(parser, "expected expression for case");
2411 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2412 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
2413 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2419 else if (!strcmp(parser_tokval(parser), "default")) {
2420 swcase.value = NULL;
2421 if (!parser_next(parser)) {
2422 ast_delete(switchnode);
2423 parseerror(parser, "expected colon");
2428 /* Now the colon and body */
2429 if (parser->tok != ':') {
2430 if (swcase.value) ast_unref(swcase.value);
2431 ast_delete(switchnode);
2432 parseerror(parser, "expected colon");
2436 if (!parser_next(parser)) {
2437 if (swcase.value) ast_unref(swcase.value);
2438 ast_delete(switchnode);
2439 parseerror(parser, "expected statements or case");
2442 caseblock = ast_block_new(parser_ctx(parser));
2444 if (swcase.value) ast_unref(swcase.value);
2445 ast_delete(switchnode);
2448 swcase.code = (ast_expression*)caseblock;
2449 vec_push(switchnode->cases, swcase);
2451 ast_expression *expr;
2452 if (parser->tok == '}')
2454 if (parser->tok == TOKEN_KEYWORD) {
2455 if (!strcmp(parser_tokval(parser), "case") ||
2456 !strcmp(parser_tokval(parser), "default"))
2461 if (!parse_statement(parser, caseblock, &expr, true)) {
2462 ast_delete(switchnode);
2467 if (!ast_block_add_expr(caseblock, expr)) {
2468 ast_delete(switchnode);
2474 parser_leaveblock(parser);
2477 if (parser->tok != '}') {
2478 ast_delete(switchnode);
2479 parseerror(parser, "expected closing paren of case list");
2482 if (!parser_next(parser)) {
2483 ast_delete(switchnode);
2484 parseerror(parser, "parse error after switch");
2487 *out = (ast_expression*)switchnode;
2491 static bool parse_goto(parser_t *parser, ast_expression **out)
2496 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2497 parseerror(parser, "expected label name after `goto`");
2501 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
2503 for (i = 0; i < vec_size(parser->labels); ++i) {
2504 if (!strcmp(parser->labels[i]->name, parser_tokval(parser))) {
2505 ast_goto_set_label(gt, parser->labels[i]);
2509 if (i == vec_size(parser->labels))
2510 vec_push(parser->gotos, gt);
2512 if (!parser_next(parser) || parser->tok != ';') {
2513 parseerror(parser, "semicolon expected after goto label");
2516 if (!parser_next(parser)) {
2517 parseerror(parser, "parse error after goto");
2521 *out = (ast_expression*)gt;
2525 static bool parse_skipwhite(parser_t *parser)
2528 if (!parser_next(parser))
2530 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
2531 return parser->tok < TOKEN_ERROR;
2534 static bool parse_eol(parser_t *parser)
2536 if (!parse_skipwhite(parser))
2538 return parser->tok == TOKEN_EOL;
2541 static bool parse_pragma_do(parser_t *parser)
2543 if (!parser_next(parser) ||
2544 parser->tok != TOKEN_IDENT ||
2545 strcmp(parser_tokval(parser), "pragma"))
2547 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
2550 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
2551 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
2555 if (!strcmp(parser_tokval(parser), "noref")) {
2556 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
2557 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
2560 parser->noref = !!parser_token(parser)->constval.i;
2561 if (!parse_eol(parser)) {
2562 parseerror(parser, "parse error after `noref` pragma");
2568 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
2575 static bool parse_pragma(parser_t *parser)
2578 parser->lex->flags.preprocessing = true;
2579 parser->lex->flags.mergelines = true;
2580 rv = parse_pragma_do(parser);
2581 if (parser->tok != TOKEN_EOL) {
2582 parseerror(parser, "junk after pragma");
2585 parser->lex->flags.preprocessing = false;
2586 parser->lex->flags.mergelines = false;
2587 if (!parser_next(parser)) {
2588 parseerror(parser, "parse error after pragma");
2594 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2596 bool noref, noreturn;
2598 ast_value *typevar = NULL;
2602 if (parser->tok == TOKEN_IDENT)
2603 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2605 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2607 /* local variable */
2609 parseerror(parser, "cannot declare a variable from here");
2612 if (opts.standard == COMPILER_QCC) {
2613 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2616 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false))
2620 else if (parse_var_qualifiers(parser, !!block, &cvq, &noref, &noreturn))
2622 if (cvq == CV_WRONG)
2624 return parse_variable(parser, block, true, cvq, NULL, noref, noreturn);
2626 else if (parser->tok == TOKEN_KEYWORD)
2628 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
2633 if (!parser_next(parser)) {
2634 parseerror(parser, "parse error after __builtin_debug_printtype");
2638 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
2640 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
2641 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
2642 if (!parser_next(parser)) {
2643 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
2649 if (!parse_statement(parser, block, out, allow_cases))
2652 con_out("__builtin_debug_printtype: got no output node\n");
2655 ast_type_to_string(*out, ty, sizeof(ty));
2656 con_out("__builtin_debug_printtype: `%s`\n", ty);
2661 else if (!strcmp(parser_tokval(parser), "return"))
2663 return parse_return(parser, block, out);
2665 else if (!strcmp(parser_tokval(parser), "if"))
2667 return parse_if(parser, block, out);
2669 else if (!strcmp(parser_tokval(parser), "while"))
2671 return parse_while(parser, block, out);
2673 else if (!strcmp(parser_tokval(parser), "do"))
2675 return parse_dowhile(parser, block, out);
2677 else if (!strcmp(parser_tokval(parser), "for"))
2679 if (opts.standard == COMPILER_QCC) {
2680 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2683 return parse_for(parser, block, out);
2685 else if (!strcmp(parser_tokval(parser), "break"))
2687 return parse_break_continue(parser, block, out, false);
2689 else if (!strcmp(parser_tokval(parser), "continue"))
2691 return parse_break_continue(parser, block, out, true);
2693 else if (!strcmp(parser_tokval(parser), "switch"))
2695 return parse_switch(parser, block, out);
2697 else if (!strcmp(parser_tokval(parser), "case") ||
2698 !strcmp(parser_tokval(parser), "default"))
2701 parseerror(parser, "unexpected 'case' label");
2706 else if (!strcmp(parser_tokval(parser), "goto"))
2708 return parse_goto(parser, out);
2710 else if (!strcmp(parser_tokval(parser), "typedef"))
2712 if (!parser_next(parser)) {
2713 parseerror(parser, "expected type definition after 'typedef'");
2716 return parse_typedef(parser);
2718 parseerror(parser, "Unexpected keyword");
2721 else if (parser->tok == '{')
2724 inner = parse_block(parser);
2727 *out = (ast_expression*)inner;
2730 else if (parser->tok == ':')
2734 if (!parser_next(parser)) {
2735 parseerror(parser, "expected label name");
2738 if (parser->tok != TOKEN_IDENT) {
2739 parseerror(parser, "label must be an identifier");
2742 label = ast_label_new(parser_ctx(parser), parser_tokval(parser));
2745 vec_push(parser->labels, label);
2746 *out = (ast_expression*)label;
2747 if (!parser_next(parser)) {
2748 parseerror(parser, "parse error after label");
2751 for (i = 0; i < vec_size(parser->gotos); ++i) {
2752 if (!strcmp(parser->gotos[i]->name, label->name)) {
2753 ast_goto_set_label(parser->gotos[i], label);
2754 vec_remove(parser->gotos, i, 1);
2760 else if (parser->tok == ';')
2762 if (!parser_next(parser)) {
2763 parseerror(parser, "parse error after empty statement");
2770 ast_expression *exp = parse_expression(parser, false);
2774 if (!ast_side_effects(exp)) {
2775 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2782 static bool parse_block_into(parser_t *parser, ast_block *block)
2786 parser_enterblock(parser);
2788 if (!parser_next(parser)) { /* skip the '{' */
2789 parseerror(parser, "expected function body");
2793 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2795 ast_expression *expr = NULL;
2796 if (parser->tok == '}')
2799 if (!parse_statement(parser, block, &expr, false)) {
2800 /* parseerror(parser, "parse error"); */
2806 if (!ast_block_add_expr(block, expr)) {
2813 if (parser->tok != '}') {
2816 (void)parser_next(parser);
2820 if (!parser_leaveblock(parser))
2822 return retval && !!block;
2825 static ast_block* parse_block(parser_t *parser)
2828 block = ast_block_new(parser_ctx(parser));
2831 if (!parse_block_into(parser, block)) {
2832 ast_block_delete(block);
2838 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
2840 if (parser->tok == '{') {
2841 *out = (ast_expression*)parse_block(parser);
2844 return parse_statement(parser, NULL, out, false);
2847 static bool create_vector_members(ast_value *var, ast_member **me)
2850 size_t len = strlen(var->name);
2852 for (i = 0; i < 3; ++i) {
2853 char *name = mem_a(len+3);
2854 memcpy(name, var->name, len);
2856 name[len+1] = 'x'+i;
2858 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
2867 do { ast_member_delete(me[--i]); } while(i);
2871 static bool parse_function_body(parser_t *parser, ast_value *var)
2873 ast_block *block = NULL;
2878 ast_expression *framenum = NULL;
2879 ast_expression *nextthink = NULL;
2880 /* None of the following have to be deleted */
2881 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2882 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2883 bool has_frame_think;
2887 has_frame_think = false;
2888 old = parser->function;
2890 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
2891 parseerror(parser, "gotos/labels leaking");
2895 if (var->expression.flags & AST_FLAG_VARIADIC) {
2896 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2897 "variadic function with implementation will not be able to access additional parameters"))
2903 if (parser->tok == '[') {
2904 /* got a frame definition: [ framenum, nextthink ]
2905 * this translates to:
2906 * self.frame = framenum;
2907 * self.nextthink = time + 0.1;
2908 * self.think = nextthink;
2912 fld_think = parser_find_field(parser, "think");
2913 fld_nextthink = parser_find_field(parser, "nextthink");
2914 fld_frame = parser_find_field(parser, "frame");
2915 if (!fld_think || !fld_nextthink || !fld_frame) {
2916 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2917 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2920 gbl_time = parser_find_global(parser, "time");
2921 gbl_self = parser_find_global(parser, "self");
2922 if (!gbl_time || !gbl_self) {
2923 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2924 parseerror(parser, "please declare the following globals: `time`, `self`");
2928 if (!parser_next(parser))
2931 framenum = parse_expression_leave(parser, true);
2933 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2936 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
2937 ast_unref(framenum);
2938 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2942 if (parser->tok != ',') {
2943 ast_unref(framenum);
2944 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2945 parseerror(parser, "Got a %i\n", parser->tok);
2949 if (!parser_next(parser)) {
2950 ast_unref(framenum);
2954 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2956 /* qc allows the use of not-yet-declared functions here
2957 * - this automatically creates a prototype */
2958 ast_value *thinkfunc;
2959 ast_expression *functype = fld_think->expression.next;
2961 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2962 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2963 ast_unref(framenum);
2964 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2968 if (!parser_next(parser)) {
2969 ast_unref(framenum);
2970 ast_delete(thinkfunc);
2974 vec_push(parser->globals, (ast_expression*)thinkfunc);
2975 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
2976 nextthink = (ast_expression*)thinkfunc;
2979 nextthink = parse_expression_leave(parser, true);
2981 ast_unref(framenum);
2982 parseerror(parser, "expected a think-function in [frame,think] notation");
2987 if (!ast_istype(nextthink, ast_value)) {
2988 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2992 if (retval && parser->tok != ']') {
2993 parseerror(parser, "expected closing `]` for [frame,think] notation");
2997 if (retval && !parser_next(parser)) {
3001 if (retval && parser->tok != '{') {
3002 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3007 ast_unref(nextthink);
3008 ast_unref(framenum);
3012 has_frame_think = true;
3015 block = ast_block_new(parser_ctx(parser));
3017 parseerror(parser, "failed to allocate block");
3018 if (has_frame_think) {
3019 ast_unref(nextthink);
3020 ast_unref(framenum);
3025 if (has_frame_think) {
3027 ast_expression *self_frame;
3028 ast_expression *self_nextthink;
3029 ast_expression *self_think;
3030 ast_expression *time_plus_1;
3031 ast_store *store_frame;
3032 ast_store *store_nextthink;
3033 ast_store *store_think;
3035 ctx = parser_ctx(parser);
3036 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3037 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3038 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3040 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3041 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3043 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3044 if (self_frame) ast_delete(self_frame);
3045 if (self_nextthink) ast_delete(self_nextthink);
3046 if (self_think) ast_delete(self_think);
3047 if (time_plus_1) ast_delete(time_plus_1);
3053 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3054 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3055 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3058 ast_delete(self_frame);
3061 if (!store_nextthink) {
3062 ast_delete(self_nextthink);
3066 ast_delete(self_think);
3070 if (store_frame) ast_delete(store_frame);
3071 if (store_nextthink) ast_delete(store_nextthink);
3072 if (store_think) ast_delete(store_think);
3075 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3076 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3077 !ast_block_add_expr(block, (ast_expression*)store_think))
3084 parseerror(parser, "failed to generate code for [frame,think]");
3085 ast_unref(nextthink);
3086 ast_unref(framenum);
3092 parser_enterblock(parser);
3094 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3096 ast_value *param = var->expression.params[parami];
3099 if (param->expression.vtype != TYPE_VECTOR &&
3100 (param->expression.vtype != TYPE_FIELD ||
3101 param->expression.next->expression.vtype != TYPE_VECTOR))
3106 if (!create_vector_members(param, me)) {
3107 ast_block_delete(block);
3111 for (e = 0; e < 3; ++e) {
3112 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3113 ast_block_collect(block, (ast_expression*)me[e]);
3117 func = ast_function_new(ast_ctx(var), var->name, var);
3119 parseerror(parser, "failed to allocate function for `%s`", var->name);
3120 ast_block_delete(block);
3123 vec_push(parser->functions, func);
3125 parser->function = func;
3126 if (!parse_block_into(parser, block)) {
3127 ast_block_delete(block);
3131 vec_push(func->blocks, block);
3133 parser->function = old;
3134 if (!parser_leaveblock(parser))
3136 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3137 parseerror(parser, "internal error: local scopes left");
3141 if (parser->tok == ';')
3142 return parser_next(parser);
3143 else if (opts.standard == COMPILER_QCC)
3144 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3148 vec_pop(parser->functions);
3149 ast_function_delete(func);
3150 var->constval.vfunc = NULL;
3153 (void)!parser_leaveblock(parser);
3154 parser->function = old;
3158 static ast_expression *array_accessor_split(
3163 ast_expression *left,
3164 ast_expression *right
3170 lex_ctx ctx = ast_ctx(array);
3172 if (!left || !right) {
3173 if (left) ast_delete(left);
3174 if (right) ast_delete(right);
3178 cmp = ast_binary_new(ctx, INSTR_LT,
3179 (ast_expression*)index,
3180 (ast_expression*)parser_const_float(parser, middle));
3184 parseerror(parser, "internal error: failed to create comparison for array setter");
3188 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3190 ast_delete(cmp); /* will delete left and right */
3191 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3195 return (ast_expression*)ifthen;
3198 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3200 lex_ctx ctx = ast_ctx(array);
3202 if (from+1 == afterend) {
3203 /* set this value */
3206 ast_array_index *subscript;
3208 int assignop = type_store_instr[value->expression.vtype];
3210 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3211 assignop = INSTR_STORE_V;
3213 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3217 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3219 ast_delete(subscript);
3223 block = ast_block_new(ctx);
3229 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3234 ret = ast_return_new(ctx, NULL);
3240 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3245 return (ast_expression*)block;
3247 ast_expression *left, *right;
3248 size_t diff = afterend - from;
3249 size_t middle = from + diff/2;
3250 left = array_setter_node(parser, array, index, value, from, middle);
3251 right = array_setter_node(parser, array, index, value, middle, afterend);
3252 return array_accessor_split(parser, array, index, middle, left, right);
3256 static ast_expression *array_field_setter_node(
3265 lex_ctx ctx = ast_ctx(array);
3267 if (from+1 == afterend) {
3268 /* set this value */
3271 ast_entfield *entfield;
3272 ast_array_index *subscript;
3274 int assignop = type_storep_instr[value->expression.vtype];
3276 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3277 assignop = INSTR_STOREP_V;
3279 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3283 entfield = ast_entfield_new_force(ctx,
3284 (ast_expression*)entity,
3285 (ast_expression*)subscript,
3286 (ast_expression*)subscript);
3288 ast_delete(subscript);
3292 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3294 ast_delete(entfield);
3298 block = ast_block_new(ctx);
3304 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3309 ret = ast_return_new(ctx, NULL);
3315 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3320 return (ast_expression*)block;
3322 ast_expression *left, *right;
3323 size_t diff = afterend - from;
3324 size_t middle = from + diff/2;
3325 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3326 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3327 return array_accessor_split(parser, array, index, middle, left, right);
3331 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3333 lex_ctx ctx = ast_ctx(array);
3335 if (from+1 == afterend) {
3337 ast_array_index *subscript;
3339 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3343 ret = ast_return_new(ctx, (ast_expression*)subscript);
3345 ast_delete(subscript);
3349 return (ast_expression*)ret;
3351 ast_expression *left, *right;
3352 size_t diff = afterend - from;
3353 size_t middle = from + diff/2;
3354 left = array_getter_node(parser, array, index, from, middle);
3355 right = array_getter_node(parser, array, index, middle, afterend);
3356 return array_accessor_split(parser, array, index, middle, left, right);
3360 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3362 ast_function *func = NULL;
3363 ast_value *fval = NULL;
3364 ast_block *body = NULL;
3366 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3368 parseerror(parser, "failed to create accessor function value");
3372 func = ast_function_new(ast_ctx(array), funcname, fval);
3375 parseerror(parser, "failed to create accessor function node");
3379 body = ast_block_new(ast_ctx(array));
3381 parseerror(parser, "failed to create block for array accessor");
3387 vec_push(func->blocks, body);
3390 vec_push(parser->accessors, fval);
3395 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
3397 ast_expression *root = NULL;
3398 ast_value *index = NULL;
3399 ast_value *value = NULL;
3403 if (!ast_istype(array->expression.next, ast_value)) {
3404 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3408 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3410 func = fval->constval.vfunc;
3411 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3413 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3414 value = ast_value_copy((ast_value*)array->expression.next);
3416 if (!index || !value) {
3417 parseerror(parser, "failed to create locals for array accessor");
3420 (void)!ast_value_set_name(value, "value"); /* not important */
3421 vec_push(fval->expression.params, index);
3422 vec_push(fval->expression.params, value);
3424 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
3426 parseerror(parser, "failed to build accessor search tree");
3430 array->setter = fval;
3431 return ast_block_add_expr(func->blocks[0], root);
3433 if (index) ast_delete(index);
3434 if (value) ast_delete(value);
3435 if (root) ast_delete(root);
3441 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
3443 ast_expression *root = NULL;
3444 ast_value *entity = NULL;
3445 ast_value *index = NULL;
3446 ast_value *value = NULL;
3450 if (!ast_istype(array->expression.next, ast_value)) {
3451 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3455 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3457 func = fval->constval.vfunc;
3458 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3460 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
3461 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3462 value = ast_value_copy((ast_value*)array->expression.next);
3463 if (!entity || !index || !value) {
3464 parseerror(parser, "failed to create locals for array accessor");
3467 (void)!ast_value_set_name(value, "value"); /* not important */
3468 vec_push(fval->expression.params, entity);
3469 vec_push(fval->expression.params, index);
3470 vec_push(fval->expression.params, value);
3472 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3474 parseerror(parser, "failed to build accessor search tree");
3478 array->setter = fval;
3479 return ast_block_add_expr(func->blocks[0], root);
3481 if (entity) ast_delete(entity);
3482 if (index) ast_delete(index);
3483 if (value) ast_delete(value);
3484 if (root) ast_delete(root);
3490 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3492 ast_expression *root = NULL;
3493 ast_value *index = NULL;
3497 /* NOTE: checking array->expression.next rather than elemtype since
3498 * for fields elemtype is a temporary fieldtype.
3500 if (!ast_istype(array->expression.next, ast_value)) {
3501 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3505 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3507 func = fval->constval.vfunc;
3508 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3510 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3513 parseerror(parser, "failed to create locals for array accessor");
3516 vec_push(fval->expression.params, index);
3518 root = array_getter_node(parser, array, index, 0, array->expression.count);
3520 parseerror(parser, "failed to build accessor search tree");
3524 array->getter = fval;
3525 return ast_block_add_expr(func->blocks[0], root);
3527 if (index) ast_delete(index);
3528 if (root) ast_delete(root);
3534 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3535 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3543 bool variadic = false;
3545 ctx = parser_ctx(parser);
3547 /* for the sake of less code we parse-in in this function */
3548 if (!parser_next(parser)) {
3549 parseerror(parser, "expected parameter list");
3555 /* parse variables until we hit a closing paren */
3556 while (parser->tok != ')') {
3558 /* there must be commas between them */
3559 if (parser->tok != ',') {
3560 parseerror(parser, "expected comma or end of parameter list");
3563 if (!parser_next(parser)) {
3564 parseerror(parser, "expected parameter");
3570 if (parser->tok == TOKEN_DOTS) {
3571 /* '...' indicates a varargs function */
3573 if (!parser_next(parser)) {
3574 parseerror(parser, "expected parameter");
3577 if (parser->tok != ')') {
3578 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3584 /* for anything else just parse a typename */
3585 param = parse_typename(parser, NULL, NULL);
3588 vec_push(params, param);
3589 if (param->expression.vtype >= TYPE_VARIANT) {
3590 char typename[1024];
3591 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
3592 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
3598 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
3602 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
3603 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3606 if (!parser_next(parser)) {
3607 parseerror(parser, "parse error after typename");
3611 /* now turn 'var' into a function type */
3612 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3613 fval->expression.next = (ast_expression*)var;
3615 fval->expression.flags |= AST_FLAG_VARIADIC;
3618 var->expression.params = params;
3625 for (i = 0; i < vec_size(params); ++i)
3626 ast_delete(params[i]);
3631 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3633 ast_expression *cexp;
3634 ast_value *cval, *tmp;
3637 ctx = parser_ctx(parser);
3639 if (!parser_next(parser)) {
3641 parseerror(parser, "expected array-size");
3645 cexp = parse_expression_leave(parser, true);
3647 if (!cexp || !ast_istype(cexp, ast_value)) {
3651 parseerror(parser, "expected array-size as constant positive integer");
3654 cval = (ast_value*)cexp;
3656 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3657 tmp->expression.next = (ast_expression*)var;
3660 if (cval->expression.vtype == TYPE_INTEGER)
3661 tmp->expression.count = cval->constval.vint;
3662 else if (cval->expression.vtype == TYPE_FLOAT)
3663 tmp->expression.count = cval->constval.vfloat;
3667 parseerror(parser, "array-size must be a positive integer constant");
3672 if (parser->tok != ']') {
3674 parseerror(parser, "expected ']' after array-size");
3677 if (!parser_next(parser)) {
3679 parseerror(parser, "error after parsing array size");
3685 /* Parse a complete typename.
3686 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3687 * but when parsing variables separated by comma
3688 * 'storebase' should point to where the base-type should be kept.
3689 * The base type makes up every bit of type information which comes *before* the
3692 * The following will be parsed in its entirety:
3694 * The 'basetype' in this case is 'void()'
3695 * and if there's a comma after it, say:
3697 * then the type-information 'void()' can be stored in 'storebase'
3699 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3701 ast_value *var, *tmp;
3704 const char *name = NULL;
3705 bool isfield = false;
3706 bool wasarray = false;
3707 size_t morefields = 0;
3709 ctx = parser_ctx(parser);
3711 /* types may start with a dot */
3712 if (parser->tok == '.') {
3714 /* if we parsed a dot we need a typename now */
3715 if (!parser_next(parser)) {
3716 parseerror(parser, "expected typename for field definition");
3720 /* Further dots are handled seperately because they won't be part of the
3723 while (parser->tok == '.') {
3725 if (!parser_next(parser)) {
3726 parseerror(parser, "expected typename for field definition");
3731 if (parser->tok == TOKEN_IDENT)
3732 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
3733 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
3734 parseerror(parser, "expected typename");
3738 /* generate the basic type value */
3739 if (cached_typedef) {
3740 var = ast_value_copy(cached_typedef);
3741 ast_value_set_name(var, "<type(from_def)>");
3743 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3745 for (; morefields; --morefields) {
3746 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
3747 tmp->expression.next = (ast_expression*)var;
3751 /* do not yet turn into a field - remember:
3752 * .void() foo; is a field too
3753 * .void()() foo; is a function
3757 if (!parser_next(parser)) {
3759 parseerror(parser, "parse error after typename");
3763 /* an opening paren now starts the parameter-list of a function
3764 * this is where original-QC has parameter lists.
3765 * We allow a single parameter list here.
3766 * Much like fteqcc we don't allow `float()() x`
3768 if (parser->tok == '(') {
3769 var = parse_parameter_list(parser, var);
3774 /* store the base if requested */
3776 *storebase = ast_value_copy(var);
3778 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3779 tmp->expression.next = (ast_expression*)*storebase;
3784 /* there may be a name now */
3785 if (parser->tok == TOKEN_IDENT) {
3786 name = util_strdup(parser_tokval(parser));
3788 if (!parser_next(parser)) {
3790 parseerror(parser, "error after variable or field declaration");
3795 /* now this may be an array */
3796 if (parser->tok == '[') {
3798 var = parse_arraysize(parser, var);
3803 /* This is the point where we can turn it into a field */
3805 /* turn it into a field if desired */
3806 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3807 tmp->expression.next = (ast_expression*)var;
3811 /* now there may be function parens again */
3812 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
3813 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3814 if (parser->tok == '(' && wasarray)
3815 parseerror(parser, "arrays as part of a return type is not supported");
3816 while (parser->tok == '(') {
3817 var = parse_parameter_list(parser, var);
3826 /* finally name it */
3828 if (!ast_value_set_name(var, name)) {
3830 parseerror(parser, "internal error: failed to set name");
3833 /* free the name, ast_value_set_name duplicates */
3840 static bool parse_typedef(parser_t *parser)
3842 ast_value *typevar, *oldtype;
3843 ast_expression *old;
3845 typevar = parse_typename(parser, NULL, NULL);
3850 if ( (old = parser_find_var(parser, typevar->name)) ) {
3851 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
3852 " -> `%s` has been declared here: %s:%i",
3853 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
3854 ast_delete(typevar);
3858 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
3859 parseerror(parser, "type `%s` has already been declared here: %s:%i",
3860 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
3861 ast_delete(typevar);
3865 vec_push(parser->_typedefs, typevar);
3866 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
3868 if (parser->tok != ';') {
3869 parseerror(parser, "expected semicolon after typedef");
3872 if (!parser_next(parser)) {
3873 parseerror(parser, "parse error after typedef");
3880 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn)
3884 ast_expression *old;
3888 ast_value *basetype = NULL;
3890 bool isparam = false;
3891 bool isvector = false;
3892 bool cleanvar = true;
3893 bool wasarray = false;
3897 /* get the first complete variable */
3898 var = parse_typename(parser, &basetype, cached_typedef);
3901 ast_delete(basetype);
3909 /* Part 0: finish the type */
3910 if (parser->tok == '(') {
3911 if (opts.standard == COMPILER_QCC)
3912 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3913 var = parse_parameter_list(parser, var);
3919 /* we only allow 1-dimensional arrays */
3920 if (parser->tok == '[') {
3922 var = parse_arraysize(parser, var);
3928 if (parser->tok == '(' && wasarray) {
3929 parseerror(parser, "arrays as part of a return type is not supported");
3930 /* we'll still parse the type completely for now */
3932 /* for functions returning functions */
3933 while (parser->tok == '(') {
3934 if (opts.standard == COMPILER_QCC)
3935 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3936 var = parse_parameter_list(parser, var);
3943 var->cvq = qualifier;
3944 /* in a noref section we simply bump the usecount */
3945 if (noref || parser->noref)
3948 var->expression.flags |= AST_FLAG_NORETURN;
3951 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3952 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3953 * is then filled with the previous definition and the parameter-names replaced.
3956 /* Deal with end_sys_ vars */
3958 if (!strcmp(var->name, "end_sys_globals")) {
3960 parser->crc_globals = vec_size(parser->globals);
3963 else if (!strcmp(var->name, "end_sys_fields")) {
3965 parser->crc_fields = vec_size(parser->fields);
3968 if (was_end && var->expression.vtype == TYPE_FIELD) {
3969 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3970 "global '%s' hint should not be a field",
3971 parser_tokval(parser)))
3978 if (!nofields && var->expression.vtype == TYPE_FIELD)
3980 /* deal with field declarations */
3981 old = parser_find_field(parser, var->name);
3983 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3984 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3993 parseerror(parser, "field `%s` already declared here: %s:%i",
3994 var->name, ast_ctx(old).file, ast_ctx(old).line);
3999 if (opts.standard == COMPILER_QCC &&
4000 (old = parser_find_global(parser, var->name)))
4002 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4003 parseerror(parser, "field `%s` already declared here: %s:%i",
4004 var->name, ast_ctx(old).file, ast_ctx(old).line);
4011 /* deal with other globals */
4012 old = parser_find_global(parser, var->name);
4013 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
4015 /* This is a function which had a prototype */
4016 if (!ast_istype(old, ast_value)) {
4017 parseerror(parser, "internal error: prototype is not an ast_value");
4021 proto = (ast_value*)old;
4022 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
4023 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
4025 ast_ctx(proto).file, ast_ctx(proto).line);
4029 /* we need the new parameter-names */
4030 for (i = 0; i < vec_size(proto->expression.params); ++i)
4031 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4039 if (opts.standard == COMPILER_GMQCC) {
4040 parseerror(parser, "global `%s` already declared here: %s:%i",
4041 var->name, ast_ctx(old).file, ast_ctx(old).line);
4045 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4046 "global `%s` already declared here: %s:%i",
4047 var->name, ast_ctx(old).file, ast_ctx(old).line))
4052 proto = (ast_value*)old;
4053 if (!ast_istype(old, ast_value)) {
4054 parseerror(parser, "internal error: not an ast_value");
4063 if (opts.standard == COMPILER_QCC &&
4064 (old = parser_find_field(parser, var->name)))
4066 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4067 parseerror(parser, "global `%s` already declared here: %s:%i",
4068 var->name, ast_ctx(old).file, ast_ctx(old).line);
4075 else /* it's not a global */
4077 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4078 if (old && !isparam) {
4079 parseerror(parser, "local `%s` already declared here: %s:%i",
4080 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4084 old = parser_find_local(parser, var->name, 0, &isparam);
4085 if (old && isparam) {
4086 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4087 "local `%s` is shadowing a parameter", var->name))
4089 parseerror(parser, "local `%s` already declared here: %s:%i",
4090 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4094 if (opts.standard != COMPILER_GMQCC) {
4103 * Create the global/local, and deal with vector types.
4106 if (var->expression.vtype == TYPE_VECTOR)
4108 else if (var->expression.vtype == TYPE_FIELD &&
4109 var->expression.next->expression.vtype == TYPE_VECTOR)
4113 if (!create_vector_members(var, me)) {
4120 /* deal with global variables, fields, functions */
4121 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4122 var->isfield = true;
4123 vec_push(parser->fields, (ast_expression*)var);
4124 util_htset(parser->htfields, var->name, var);
4126 for (i = 0; i < 3; ++i) {
4127 vec_push(parser->fields, (ast_expression*)me[i]);
4128 util_htset(parser->htfields, me[i]->name, me[i]);
4133 vec_push(parser->globals, (ast_expression*)var);
4134 util_htset(parser->htglobals, var->name, var);
4136 for (i = 0; i < 3; ++i) {
4137 vec_push(parser->globals, (ast_expression*)me[i]);
4138 util_htset(parser->htglobals, me[i]->name, me[i]);
4143 vec_push(localblock->locals, var);
4144 parser_addlocal(parser, var->name, (ast_expression*)var);
4146 for (i = 0; i < 3; ++i) {
4147 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4148 ast_block_collect(localblock, (ast_expression*)me[i]);
4154 me[0] = me[1] = me[2] = NULL;
4159 if (var->expression.vtype == TYPE_ARRAY) {
4161 snprintf(name, sizeof(name), "%s##SET", var->name);
4162 if (!parser_create_array_setter(parser, var, name))
4164 snprintf(name, sizeof(name), "%s##GET", var->name);
4165 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4168 else if (!localblock && !nofields &&
4169 var->expression.vtype == TYPE_FIELD &&
4170 var->expression.next->expression.vtype == TYPE_ARRAY)
4173 ast_expression *telem;
4175 ast_value *array = (ast_value*)var->expression.next;
4177 if (!ast_istype(var->expression.next, ast_value)) {
4178 parseerror(parser, "internal error: field element type must be an ast_value");
4182 snprintf(name, sizeof(name), "%s##SETF", var->name);
4183 if (!parser_create_array_field_setter(parser, array, name))
4186 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4187 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4188 tfield->expression.next = telem;
4189 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4190 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4198 if (parser->tok == ';') {
4199 ast_delete(basetype);
4200 if (!parser_next(parser)) {
4201 parseerror(parser, "error after variable declaration");
4207 if (parser->tok == ',')
4211 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4214 parseerror(parser, "missing comma or semicolon while parsing variables");
4218 if (localblock && opts.standard == COMPILER_QCC) {
4219 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4220 "initializing expression turns variable `%s` into a constant in this standard",
4227 if (parser->tok != '{') {
4228 if (parser->tok != '=') {
4229 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4233 if (!parser_next(parser)) {
4234 parseerror(parser, "error parsing initializer");
4238 else if (opts.standard == COMPILER_QCC) {
4239 parseerror(parser, "expected '=' before function body in this standard");
4242 if (parser->tok == '#') {
4243 ast_function *func = NULL;
4246 parseerror(parser, "cannot declare builtins within functions");
4249 if (var->expression.vtype != TYPE_FUNCTION) {
4250 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4253 if (!parser_next(parser)) {
4254 parseerror(parser, "expected builtin number");
4257 if (parser->tok != TOKEN_INTCONST) {
4258 parseerror(parser, "builtin number must be an integer constant");
4261 if (parser_token(parser)->constval.i < 0) {
4262 parseerror(parser, "builtin number must be an integer greater than zero");
4266 if (var->hasvalue) {
4267 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
4268 "builtin `%s` has already been defined\n"
4269 " -> previous declaration here: %s:%i",
4270 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
4274 func = ast_function_new(ast_ctx(var), var->name, var);
4276 parseerror(parser, "failed to allocate function for `%s`", var->name);
4279 vec_push(parser->functions, func);
4281 func->builtin = -parser_token(parser)->constval.i-1;
4284 if (!parser_next(parser)) {
4285 parseerror(parser, "expected comma or semicolon");
4287 ast_function_delete(func);
4288 var->constval.vfunc = NULL;
4292 else if (parser->tok == '{' || parser->tok == '[')
4296 parseerror(parser, "cannot declare functions within functions");
4301 ast_ctx(proto) = parser_ctx(parser);
4303 if (!parse_function_body(parser, var))
4305 ast_delete(basetype);
4306 for (i = 0; i < vec_size(parser->gotos); ++i)
4307 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
4308 vec_free(parser->gotos);
4309 vec_free(parser->labels);
4312 ast_expression *cexp;
4315 cexp = parse_expression_leave(parser, true);
4320 cval = (ast_value*)cexp;
4321 if (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
4322 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
4325 if (opts.standard != COMPILER_GMQCC &&
4326 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4327 qualifier != CV_VAR)
4329 var->cvq = CV_CONST;
4331 var->hasvalue = true;
4332 if (cval->expression.vtype == TYPE_STRING)
4333 var->constval.vstring = parser_strdup(cval->constval.vstring);
4334 else if (cval->expression.vtype == TYPE_FIELD)
4335 var->constval.vfield = cval;
4337 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
4342 shunt sy = { NULL, NULL };
4345 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
4346 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
4347 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
4348 if (!parser_sy_apply_operator(parser, &sy))
4351 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
4352 parseerror(parser, "internal error: leaked operands");
4353 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
4363 if (parser->tok == ',') {
4364 if (!parser_next(parser)) {
4365 parseerror(parser, "expected another variable");
4369 if (parser->tok != TOKEN_IDENT) {
4370 parseerror(parser, "expected another variable");
4373 var = ast_value_copy(basetype);
4375 ast_value_set_name(var, parser_tokval(parser));
4376 if (!parser_next(parser)) {
4377 parseerror(parser, "error parsing variable declaration");
4383 if (parser->tok != ';') {
4384 parseerror(parser, "missing semicolon after variables");
4388 if (!parser_next(parser)) {
4389 parseerror(parser, "parse error after variable declaration");
4393 ast_delete(basetype);
4397 if (cleanvar && var)
4399 ast_delete(basetype);
4403 ast_delete(basetype);
4404 if (cleanvar && var)
4406 if (me[0]) ast_member_delete(me[0]);
4407 if (me[1]) ast_member_delete(me[1]);
4408 if (me[2]) ast_member_delete(me[2]);
4412 static bool parser_global_statement(parser_t *parser)
4416 bool noreturn = false;
4417 ast_value *istype = NULL;
4419 if (parser->tok == TOKEN_IDENT)
4420 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
4422 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
4424 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false);
4426 else if (parse_var_qualifiers(parser, false, &cvq, &noref, &noreturn))
4428 if (cvq == CV_WRONG)
4430 return parse_variable(parser, NULL, true, cvq, NULL, noref, noreturn);
4432 else if (parser->tok == TOKEN_KEYWORD)
4434 if (!strcmp(parser_tokval(parser), "typedef")) {
4435 if (!parser_next(parser)) {
4436 parseerror(parser, "expected type definition after 'typedef'");
4439 return parse_typedef(parser);
4441 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
4444 else if (parser->tok == '#')
4446 return parse_pragma(parser);
4448 else if (parser->tok == '$')
4450 if (!parser_next(parser)) {
4451 parseerror(parser, "parse error");
4457 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
4463 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
4465 return util_crc16(old, str, strlen(str));
4468 static void progdefs_crc_file(const char *str)
4470 /* write to progdefs.h here */
4474 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
4476 old = progdefs_crc_sum(old, str);
4477 progdefs_crc_file(str);
4481 static void generate_checksum(parser_t *parser)
4483 uint16_t crc = 0xFFFF;
4487 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
4488 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
4490 progdefs_crc_file("\tint\tpad;\n");
4491 progdefs_crc_file("\tint\tofs_return[3];\n");
4492 progdefs_crc_file("\tint\tofs_parm0[3];\n");
4493 progdefs_crc_file("\tint\tofs_parm1[3];\n");
4494 progdefs_crc_file("\tint\tofs_parm2[3];\n");
4495 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4496 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4497 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4498 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4499 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4501 for (i = 0; i < parser->crc_globals; ++i) {
4502 if (!ast_istype(parser->globals[i], ast_value))
4504 value = (ast_value*)(parser->globals[i]);
4505 switch (value->expression.vtype) {
4506 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4507 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4508 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4509 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4511 crc = progdefs_crc_both(crc, "\tint\t");
4514 crc = progdefs_crc_both(crc, value->name);
4515 crc = progdefs_crc_both(crc, ";\n");
4517 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4518 for (i = 0; i < parser->crc_fields; ++i) {
4519 if (!ast_istype(parser->fields[i], ast_value))
4521 value = (ast_value*)(parser->fields[i]);
4522 switch (value->expression.next->expression.vtype) {
4523 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4524 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4525 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4526 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4528 crc = progdefs_crc_both(crc, "\tint\t");
4531 crc = progdefs_crc_both(crc, value->name);
4532 crc = progdefs_crc_both(crc, ";\n");
4534 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4539 static parser_t *parser;
4545 parser = (parser_t*)mem_a(sizeof(parser_t));
4549 memset(parser, 0, sizeof(*parser));
4551 for (i = 0; i < operator_count; ++i) {
4552 if (operators[i].id == opid1('=')) {
4553 parser->assign_op = operators+i;
4557 if (!parser->assign_op) {
4558 printf("internal error: initializing parser: failed to find assign operator\n");
4563 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4564 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4565 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4566 vec_push(parser->_blocktypedefs, 0);
4570 bool parser_compile()
4572 /* initial lexer/parser state */
4573 parser->lex->flags.noops = true;
4575 if (parser_next(parser))
4577 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4579 if (!parser_global_statement(parser)) {
4580 if (parser->tok == TOKEN_EOF)
4581 parseerror(parser, "unexpected eof");
4582 else if (!parser->errors)
4583 parseerror(parser, "there have been errors, bailing out");
4584 lex_close(parser->lex);
4590 parseerror(parser, "parse error");
4591 lex_close(parser->lex);
4596 lex_close(parser->lex);
4599 return !parser->errors;
4602 bool parser_compile_file(const char *filename)
4604 parser->lex = lex_open(filename);
4606 con_err("failed to open file \"%s\"\n", filename);
4609 return parser_compile();
4612 bool parser_compile_string_len(const char *name, const char *str, size_t len)
4614 parser->lex = lex_open_string(str, len, name);
4616 con_err("failed to create lexer for string \"%s\"\n", name);
4619 return parser_compile();
4622 bool parser_compile_string(const char *name, const char *str)
4624 parser->lex = lex_open_string(str, strlen(str), name);
4626 con_err("failed to create lexer for string \"%s\"\n", name);
4629 return parser_compile();
4632 void parser_cleanup()
4635 for (i = 0; i < vec_size(parser->accessors); ++i) {
4636 ast_delete(parser->accessors[i]->constval.vfunc);
4637 parser->accessors[i]->constval.vfunc = NULL;
4638 ast_delete(parser->accessors[i]);
4640 for (i = 0; i < vec_size(parser->functions); ++i) {
4641 ast_delete(parser->functions[i]);
4643 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4644 ast_delete(parser->imm_vector[i]);
4646 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4647 ast_delete(parser->imm_string[i]);
4649 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4650 ast_delete(parser->imm_float[i]);
4652 for (i = 0; i < vec_size(parser->fields); ++i) {
4653 ast_delete(parser->fields[i]);
4655 for (i = 0; i < vec_size(parser->globals); ++i) {
4656 ast_delete(parser->globals[i]);
4658 vec_free(parser->accessors);
4659 vec_free(parser->functions);
4660 vec_free(parser->imm_vector);
4661 vec_free(parser->imm_string);
4662 vec_free(parser->imm_float);
4663 vec_free(parser->globals);
4664 vec_free(parser->fields);
4666 for (i = 0; i < vec_size(parser->variables); ++i)
4667 util_htdel(parser->variables[i]);
4668 vec_free(parser->variables);
4669 vec_free(parser->_blocklocals);
4670 vec_free(parser->_locals);
4672 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4673 ast_delete(parser->_typedefs[i]);
4674 vec_free(parser->_typedefs);
4675 for (i = 0; i < vec_size(parser->typedefs); ++i)
4676 util_htdel(parser->typedefs[i]);
4677 vec_free(parser->typedefs);
4678 vec_free(parser->_blocktypedefs);
4680 vec_free(parser->_block_ctx);
4682 vec_free(parser->labels);
4683 vec_free(parser->gotos);
4688 bool parser_finish(const char *output)
4694 if (!parser->errors)
4696 ir = ir_builder_new("gmqcc_out");
4698 con_out("failed to allocate builder\n");
4702 for (i = 0; i < vec_size(parser->fields); ++i) {
4705 if (!ast_istype(parser->fields[i], ast_value))
4707 field = (ast_value*)parser->fields[i];
4708 hasvalue = field->hasvalue;
4709 field->hasvalue = false;
4710 if (!ast_global_codegen((ast_value*)field, ir, true)) {
4711 con_out("failed to generate field %s\n", field->name);
4712 ir_builder_delete(ir);
4717 ast_expression *subtype;
4718 field->hasvalue = true;
4719 subtype = field->expression.next;
4720 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
4721 if (subtype->expression.vtype == TYPE_FIELD)
4722 ifld->fieldtype = subtype->expression.next->expression.vtype;
4723 else if (subtype->expression.vtype == TYPE_FUNCTION)
4724 ifld->outtype = subtype->expression.next->expression.vtype;
4725 (void)!ir_value_set_field(field->ir_v, ifld);
4728 for (i = 0; i < vec_size(parser->globals); ++i) {
4730 if (!ast_istype(parser->globals[i], ast_value))
4732 asvalue = (ast_value*)(parser->globals[i]);
4733 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
4734 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
4735 "unused global: `%s`", asvalue->name);
4737 if (!ast_global_codegen(asvalue, ir, false)) {
4738 con_out("failed to generate global %s\n", asvalue->name);
4739 ir_builder_delete(ir);
4743 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4744 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
4745 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
4746 ir_builder_delete(ir);
4750 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4751 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
4752 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
4753 ir_builder_delete(ir);
4757 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4758 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
4759 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
4760 ir_builder_delete(ir);
4764 for (i = 0; i < vec_size(parser->globals); ++i) {
4766 if (!ast_istype(parser->globals[i], ast_value))
4768 asvalue = (ast_value*)(parser->globals[i]);
4769 if (!ast_generate_accessors(asvalue, ir)) {
4770 ir_builder_delete(ir);
4774 for (i = 0; i < vec_size(parser->fields); ++i) {
4776 asvalue = (ast_value*)(parser->fields[i]->expression.next);
4778 if (!ast_istype((ast_expression*)asvalue, ast_value))
4780 if (asvalue->expression.vtype != TYPE_ARRAY)
4782 if (!ast_generate_accessors(asvalue, ir)) {
4783 ir_builder_delete(ir);
4787 for (i = 0; i < vec_size(parser->functions); ++i) {
4788 if (!ast_function_codegen(parser->functions[i], ir)) {
4789 con_out("failed to generate function %s\n", parser->functions[i]->name);
4790 ir_builder_delete(ir);
4795 ir_builder_dump(ir, con_out);
4796 for (i = 0; i < vec_size(parser->functions); ++i) {
4797 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4798 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4799 ir_builder_delete(ir);
4806 ir_builder_dump(ir, con_out);
4808 generate_checksum(parser);
4810 if (!ir_builder_generate(ir, output)) {
4811 con_out("*** failed to generate output file\n");
4812 ir_builder_delete(ir);
4817 ir_builder_delete(ir);
4821 con_out("*** there were compile errors\n");