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 /* beginning of locals */
30 #define PARSER_HT_LOCALS 2
32 #define PARSER_HT_SIZE 1024
33 #define TYPEDEF_HT_SIZE 16
35 enum parser_pot { POT_PAREN, POT_TERNARY1, POT_TERNARY2 };
40 ast_expression **globals;
41 ast_expression **fields;
42 ast_function **functions;
43 ast_value **imm_float;
44 ast_value **imm_string;
45 ast_value **imm_vector;
48 /* must be deleted first, they reference immediates and values */
49 ast_value **accessors;
51 ast_value *imm_float_zero;
52 ast_value *imm_float_one;
53 ast_value *imm_vector_zero;
58 ast_function *function;
60 /* All the labels the function defined...
61 * 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;
80 /* we store the '=' operator info */
81 const oper_info *assign_op;
83 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
84 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
85 * anything else: type error
89 /* Keep track of our ternary vs parenthesis nesting state.
90 * If we reach a 'comma' operator in a ternary without a paren,
91 * we shall trigger -Wternary-precedence.
99 static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10;
101 static void parser_enterblock(parser_t *parser);
102 static bool parser_leaveblock(parser_t *parser);
103 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
104 static bool parse_typedef(parser_t *parser);
105 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn, bool is_static);
106 static ast_block* parse_block(parser_t *parser);
107 static bool parse_block_into(parser_t *parser, ast_block *block);
108 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
109 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
110 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
111 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
113 static void parseerror(parser_t *parser, const char *fmt, ...)
117 vcompile_error(parser->lex->tok.ctx, fmt, ap);
121 /* returns true if it counts as an error */
122 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
127 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
132 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
137 r = vcompile_warning(ctx, warntype, fmt, ap);
142 /**********************************************************************
143 * some maths used for constant folding
146 vector vec3_add(vector a, vector b)
155 vector vec3_sub(vector a, vector b)
164 qcfloat vec3_mulvv(vector a, vector b)
166 return (a.x * b.x + a.y * b.y + a.z * b.z);
169 vector vec3_mulvf(vector a, float b)
178 /**********************************************************************
182 bool parser_next(parser_t *parser)
184 /* lex_do kills the previous token */
185 parser->tok = lex_do(parser->lex);
186 if (parser->tok == TOKEN_EOF)
188 if (parser->tok >= TOKEN_ERROR) {
189 parseerror(parser, "lex error");
195 #define parser_tokval(p) ((p)->lex->tok.value)
196 #define parser_token(p) (&((p)->lex->tok))
197 #define parser_ctx(p) ((p)->lex->tok.ctx)
199 static ast_value* parser_const_float(parser_t *parser, double d)
203 for (i = 0; i < vec_size(parser->imm_float); ++i) {
204 const double compare = parser->imm_float[i]->constval.vfloat;
205 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
206 return parser->imm_float[i];
208 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
210 out->hasvalue = true;
211 out->constval.vfloat = d;
212 vec_push(parser->imm_float, out);
216 static ast_value* parser_const_float_0(parser_t *parser)
218 if (!parser->imm_float_zero)
219 parser->imm_float_zero = parser_const_float(parser, 0);
220 return parser->imm_float_zero;
223 static ast_value* parser_const_float_1(parser_t *parser)
225 if (!parser->imm_float_one)
226 parser->imm_float_one = parser_const_float(parser, 1);
227 return parser->imm_float_one;
230 static char *parser_strdup(const char *str)
233 /* actually dup empty strings */
234 char *out = (char*)mem_a(1);
238 return util_strdup(str);
241 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
245 for (i = 0; i < vec_size(parser->imm_string); ++i) {
246 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
247 return parser->imm_string[i];
251 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
252 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
254 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
256 out->hasvalue = true;
257 out->constval.vstring = parser_strdup(str);
258 vec_push(parser->imm_string, out);
262 static ast_value* parser_const_vector(parser_t *parser, vector v)
266 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
267 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
268 return parser->imm_vector[i];
270 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
272 out->hasvalue = true;
273 out->constval.vvec = v;
274 vec_push(parser->imm_vector, out);
278 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
284 return parser_const_vector(parser, v);
287 static ast_value* parser_const_vector_0(parser_t *parser)
289 if (!parser->imm_vector_zero)
290 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
291 return parser->imm_vector_zero;
294 static ast_expression* parser_find_field(parser_t *parser, const char *name)
296 return ( ast_expression*)util_htget(parser->htfields, name);
299 static ast_expression* parser_find_global(parser_t *parser, const char *name)
301 return (ast_expression*)util_htget(parser->htglobals, name);
304 static ast_expression* parser_find_param(parser_t *parser, const char *name)
308 if (!parser->function)
310 fun = parser->function->vtype;
311 for (i = 0; i < vec_size(fun->expression.params); ++i) {
312 if (!strcmp(fun->expression.params[i]->name, name))
313 return (ast_expression*)(fun->expression.params[i]);
318 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
323 hash = util_hthash(parser->htglobals, name);
326 for (i = vec_size(parser->variables); i > upto;) {
328 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
332 return parser_find_param(parser, name);
335 static ast_expression* parser_find_var(parser_t *parser, const char *name)
339 v = parser_find_local(parser, name, 0, &dummy);
340 if (!v) v = parser_find_global(parser, name);
344 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
348 hash = util_hthash(parser->typedefs[0], name);
350 for (i = vec_size(parser->typedefs); i > upto;) {
352 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
360 size_t etype; /* 0 = expression, others are operators */
364 ast_block *block; /* for commas and function calls */
373 #define SY_PAREN_EXPR '('
374 #define SY_PAREN_FUNC 'f'
375 #define SY_PAREN_INDEX '['
376 #define SY_PAREN_TERNARY '?'
378 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
389 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
393 e.out = (ast_expression*)v;
400 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
402 e.etype = 1 + (op - operators);
411 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
423 # define DEBUGSHUNTDO(x) x
425 # define DEBUGSHUNTDO(x)
428 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
429 * so we need to rotate it to become ent.(foo[n]).
431 static bool rotate_entfield_array_index_nodes(ast_expression **out)
433 ast_array_index *index;
434 ast_entfield *entfield;
438 ast_expression *entity;
440 lex_ctx ctx = ast_ctx(*out);
442 if (!ast_istype(*out, ast_array_index))
444 index = (ast_array_index*)*out;
446 if (!ast_istype(index->array, ast_entfield))
448 entfield = (ast_entfield*)index->array;
450 if (!ast_istype(entfield->field, ast_value))
452 field = (ast_value*)entfield->field;
455 entity = entfield->entity;
459 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
460 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
461 *out = (ast_expression*)entfield;
466 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
468 switch (v->expression.vtype) {
470 return !!v->constval.vfloat;
472 return !!v->constval.vint;
474 if (OPTS_FLAG(CORRECT_LOGIC))
475 return v->constval.vvec.x &&
476 v->constval.vvec.y &&
479 return !!(v->constval.vvec.x);
481 if (!v->constval.vstring)
483 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
485 return !!v->constval.vstring[0];
487 compile_error(ctx, "internal error: immediate_is_true on invalid type");
488 return !!v->constval.vfunc;
492 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
496 ast_expression *out = NULL;
497 ast_expression *exprs[3];
498 ast_block *blocks[3];
499 ast_value *asvalue[3];
500 ast_binstore *asbinstore;
501 size_t i, assignop, addop, subop;
502 qcint generated_op = 0;
507 if (!vec_size(sy->ops)) {
508 parseerror(parser, "internal error: missing operator");
512 if (vec_last(sy->ops).paren) {
513 parseerror(parser, "unmatched parenthesis");
517 op = &operators[vec_last(sy->ops).etype - 1];
518 ctx = vec_last(sy->ops).ctx;
520 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
522 if (vec_size(sy->out) < op->operands) {
523 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
524 op->op, (int)op->id);
528 vec_shrinkby(sy->ops, 1);
530 /* op(:?) has no input and no output */
534 vec_shrinkby(sy->out, op->operands);
535 for (i = 0; i < op->operands; ++i) {
536 exprs[i] = sy->out[vec_size(sy->out)+i].out;
537 blocks[i] = sy->out[vec_size(sy->out)+i].block;
538 asvalue[i] = (ast_value*)exprs[i];
541 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
542 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
546 #define NotSameType(T) \
547 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
548 exprs[0]->expression.vtype != T)
549 #define CanConstFold1(A) \
550 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
551 (A)->expression.vtype != TYPE_FUNCTION)
552 #define CanConstFold(A, B) \
553 (CanConstFold1(A) && CanConstFold1(B))
554 #define ConstV(i) (asvalue[(i)]->constval.vvec)
555 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
556 #define ConstS(i) (asvalue[(i)]->constval.vstring)
560 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
564 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
565 if (exprs[1]->expression.vtype != TYPE_FIELD) {
566 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
569 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
571 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
572 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
576 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
582 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
583 !(exprs[0]->expression.vtype == TYPE_FIELD &&
584 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
586 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
587 parseerror(parser, "cannot index value of type %s", ty1);
590 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
591 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
592 parseerror(parser, "index must be of type float, not %s", ty1);
595 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
596 if (rotate_entfield_array_index_nodes(&out))
599 /* This is not broken in fteqcc anymore */
600 if (opts.standard != COMPILER_GMQCC) {
601 /* this error doesn't need to make us bail out */
602 (void)!parsewarning(parser, WARN_EXTENSIONS,
603 "accessing array-field members of an entity without parenthesis\n"
604 " -> this is an extension from -std=gmqcc");
612 if (!ast_block_add_expr(blocks[0], exprs[1]))
615 blocks[0] = ast_block_new(ctx);
616 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
617 !ast_block_add_expr(blocks[0], exprs[1]))
622 if (!ast_block_set_type(blocks[0], exprs[1]))
625 vec_push(sy->out, syblock(ctx, blocks[0]));
632 switch (exprs[0]->expression.vtype) {
634 if (CanConstFold1(exprs[0]))
635 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
637 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
638 (ast_expression*)parser_const_float_0(parser),
642 if (CanConstFold1(exprs[0]))
643 out = (ast_expression*)parser_const_vector_f(parser,
644 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
646 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
647 (ast_expression*)parser_const_vector_0(parser),
651 parseerror(parser, "invalid types used in expression: cannot negate type %s",
652 type_name[exprs[0]->expression.vtype]);
658 switch (exprs[0]->expression.vtype) {
660 if (CanConstFold1(exprs[0]))
661 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
663 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
666 if (CanConstFold1(exprs[0]))
667 out = (ast_expression*)parser_const_float(parser,
668 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
670 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
673 if (CanConstFold1(exprs[0])) {
674 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
675 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
677 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
679 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
680 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
682 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
685 /* we don't constant-fold NOT for these types */
687 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
690 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
693 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
694 type_name[exprs[0]->expression.vtype]);
700 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
701 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
703 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
704 type_name[exprs[0]->expression.vtype],
705 type_name[exprs[1]->expression.vtype]);
708 switch (exprs[0]->expression.vtype) {
710 if (CanConstFold(exprs[0], exprs[1]))
712 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
715 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
718 if (CanConstFold(exprs[0], exprs[1]))
719 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
721 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
724 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
725 type_name[exprs[0]->expression.vtype],
726 type_name[exprs[1]->expression.vtype]);
731 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
732 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
734 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
735 type_name[exprs[1]->expression.vtype],
736 type_name[exprs[0]->expression.vtype]);
739 switch (exprs[0]->expression.vtype) {
741 if (CanConstFold(exprs[0], exprs[1]))
742 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
744 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
747 if (CanConstFold(exprs[0], exprs[1]))
748 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
750 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
753 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
754 type_name[exprs[1]->expression.vtype],
755 type_name[exprs[0]->expression.vtype]);
760 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
761 exprs[0]->expression.vtype != TYPE_VECTOR &&
762 exprs[0]->expression.vtype != TYPE_FLOAT &&
763 exprs[1]->expression.vtype != TYPE_VECTOR &&
764 exprs[1]->expression.vtype != TYPE_FLOAT)
766 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
767 type_name[exprs[1]->expression.vtype],
768 type_name[exprs[0]->expression.vtype]);
771 switch (exprs[0]->expression.vtype) {
773 if (exprs[1]->expression.vtype == TYPE_VECTOR)
775 if (CanConstFold(exprs[0], exprs[1]))
776 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
778 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
782 if (CanConstFold(exprs[0], exprs[1]))
783 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
785 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
789 if (exprs[1]->expression.vtype == TYPE_FLOAT)
791 if (CanConstFold(exprs[0], exprs[1]))
792 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
794 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
798 if (CanConstFold(exprs[0], exprs[1]))
799 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
801 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
805 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
806 type_name[exprs[1]->expression.vtype],
807 type_name[exprs[0]->expression.vtype]);
812 if (NotSameType(TYPE_FLOAT)) {
813 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
814 type_name[exprs[0]->expression.vtype],
815 type_name[exprs[1]->expression.vtype]);
818 if (CanConstFold(exprs[0], exprs[1]))
819 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
821 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
825 parseerror(parser, "qc does not have a modulo operator");
829 if (NotSameType(TYPE_FLOAT)) {
830 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
831 type_name[exprs[0]->expression.vtype],
832 type_name[exprs[1]->expression.vtype]);
835 if (CanConstFold(exprs[0], exprs[1]))
836 out = (ast_expression*)parser_const_float(parser,
837 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
838 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
840 out = (ast_expression*)ast_binary_new(ctx,
841 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
845 parseerror(parser, "TODO: bitxor");
850 case opid3('<','<','='):
851 case opid3('>','>','='):
852 parseerror(parser, "TODO: shifts");
856 generated_op += 1; /* INSTR_OR */
858 generated_op += INSTR_AND;
860 if (NotSameType(TYPE_FLOAT)) {
861 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
862 type_name[exprs[0]->expression.vtype],
863 type_name[exprs[1]->expression.vtype]);
864 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
865 parseerror(parser, "TODO: optional early out");
869 if (CanConstFold(exprs[0], exprs[1]))
871 if (OPTS_FLAG(PERL_LOGIC)) {
872 if (immediate_is_true(ctx, asvalue[0]))
876 out = (ast_expression*)parser_const_float(parser,
877 ( (generated_op == INSTR_OR)
878 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
879 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
884 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
885 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
886 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
887 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
890 for (i = 0; i < 2; ++i) {
891 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->expression.vtype == TYPE_VECTOR) {
892 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
894 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
896 exprs[i] = out; out = NULL;
897 if (OPTS_FLAG(PERL_LOGIC)) {
898 /* here we want to keep the right expressions' type */
902 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->expression.vtype == TYPE_STRING) {
903 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
905 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
907 exprs[i] = out; out = NULL;
908 if (OPTS_FLAG(PERL_LOGIC)) {
909 /* here we want to keep the right expressions' type */
914 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
919 if (vec_last(parser->pot) != POT_TERNARY2) {
920 parseerror(parser, "mismatched parenthesis/ternary");
923 vec_pop(parser->pot);
924 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
925 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
926 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
927 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
930 if (CanConstFold1(exprs[0]))
931 out = (ConstF(0) ? exprs[1] : exprs[2]);
933 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
937 generated_op += 1; /* INSTR_GT */
939 generated_op += 1; /* INSTR_LT */
940 case opid2('>', '='):
941 generated_op += 1; /* INSTR_GE */
942 case opid2('<', '='):
943 generated_op += INSTR_LE;
944 if (NotSameType(TYPE_FLOAT)) {
945 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
946 type_name[exprs[0]->expression.vtype],
947 type_name[exprs[1]->expression.vtype]);
950 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
952 case opid2('!', '='):
953 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
954 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
955 type_name[exprs[0]->expression.vtype],
956 type_name[exprs[1]->expression.vtype]);
959 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
961 case opid2('=', '='):
962 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
963 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
964 type_name[exprs[0]->expression.vtype],
965 type_name[exprs[1]->expression.vtype]);
968 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
972 if (ast_istype(exprs[0], ast_entfield)) {
973 ast_expression *field = ((ast_entfield*)exprs[0])->field;
974 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
975 exprs[0]->expression.vtype == TYPE_FIELD &&
976 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
978 assignop = type_storep_instr[TYPE_VECTOR];
981 assignop = type_storep_instr[exprs[0]->expression.vtype];
982 if (assignop == AINSTR_END ||
983 !ast_compare_type(field->expression.next, exprs[1]))
985 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
986 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
987 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
988 field->expression.next->expression.vtype == TYPE_FUNCTION &&
989 exprs[1]->expression.vtype == TYPE_FUNCTION)
991 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
992 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
995 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1000 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1001 exprs[0]->expression.vtype == TYPE_FIELD &&
1002 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1004 assignop = type_store_instr[TYPE_VECTOR];
1007 assignop = type_store_instr[exprs[0]->expression.vtype];
1010 if (assignop == AINSTR_END) {
1011 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1012 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1013 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1015 else if (!ast_compare_type(exprs[0], exprs[1])) {
1016 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1017 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1018 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1019 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1020 exprs[1]->expression.vtype == TYPE_FUNCTION)
1022 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1023 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1026 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1029 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1030 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1032 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1034 case opid3('+','+','P'):
1035 case opid3('-','-','P'):
1037 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1038 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1039 parseerror(parser, "invalid type for prefix increment: %s", ty1);
1042 if (op->id == opid3('+','+','P'))
1043 addop = INSTR_ADD_F;
1045 addop = INSTR_SUB_F;
1046 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1047 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1049 if (ast_istype(exprs[0], ast_entfield)) {
1050 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1052 (ast_expression*)parser_const_float_1(parser));
1054 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1056 (ast_expression*)parser_const_float_1(parser));
1059 case opid3('S','+','+'):
1060 case opid3('S','-','-'):
1062 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1063 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1064 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1067 if (op->id == opid3('S','+','+')) {
1068 addop = INSTR_ADD_F;
1069 subop = INSTR_SUB_F;
1071 addop = INSTR_SUB_F;
1072 subop = INSTR_ADD_F;
1074 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1075 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1077 if (ast_istype(exprs[0], ast_entfield)) {
1078 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1080 (ast_expression*)parser_const_float_1(parser));
1082 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1084 (ast_expression*)parser_const_float_1(parser));
1088 out = (ast_expression*)ast_binary_new(ctx, subop,
1090 (ast_expression*)parser_const_float_1(parser));
1092 case opid2('+','='):
1093 case opid2('-','='):
1094 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1095 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1097 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1098 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1099 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1103 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1104 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1106 if (ast_istype(exprs[0], ast_entfield))
1107 assignop = type_storep_instr[exprs[0]->expression.vtype];
1109 assignop = type_store_instr[exprs[0]->expression.vtype];
1110 switch (exprs[0]->expression.vtype) {
1112 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1113 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1114 exprs[0], exprs[1]);
1117 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1118 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1119 exprs[0], exprs[1]);
1122 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1123 type_name[exprs[0]->expression.vtype],
1124 type_name[exprs[1]->expression.vtype]);
1128 case opid2('*','='):
1129 case opid2('/','='):
1130 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1131 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1132 exprs[0]->expression.vtype == TYPE_VECTOR))
1134 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1135 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1136 parseerror(parser, "invalid types used in expression: %s and %s",
1140 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1141 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1143 if (ast_istype(exprs[0], ast_entfield))
1144 assignop = type_storep_instr[exprs[0]->expression.vtype];
1146 assignop = type_store_instr[exprs[0]->expression.vtype];
1147 switch (exprs[0]->expression.vtype) {
1149 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1150 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1151 exprs[0], exprs[1]);
1154 if (op->id == opid2('*','=')) {
1155 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1156 exprs[0], exprs[1]);
1158 /* there's no DIV_VF */
1159 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1160 (ast_expression*)parser_const_float_1(parser),
1164 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1169 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1170 type_name[exprs[0]->expression.vtype],
1171 type_name[exprs[1]->expression.vtype]);
1175 case opid2('&','='):
1176 case opid2('|','='):
1177 if (NotSameType(TYPE_FLOAT)) {
1178 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1179 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1180 parseerror(parser, "invalid types used in expression: %s and %s",
1184 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1185 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1187 if (ast_istype(exprs[0], ast_entfield))
1188 assignop = type_storep_instr[exprs[0]->expression.vtype];
1190 assignop = type_store_instr[exprs[0]->expression.vtype];
1191 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1192 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1193 exprs[0], exprs[1]);
1195 case opid3('&','~','='):
1196 /* This is like: a &= ~(b);
1197 * But QC has no bitwise-not, so we implement it as
1200 if (NotSameType(TYPE_FLOAT)) {
1201 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1202 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1203 parseerror(parser, "invalid types used in expression: %s and %s",
1207 if (ast_istype(exprs[0], ast_entfield))
1208 assignop = type_storep_instr[exprs[0]->expression.vtype];
1210 assignop = type_store_instr[exprs[0]->expression.vtype];
1211 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1214 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1215 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1217 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1218 asbinstore->keep_dest = true;
1219 out = (ast_expression*)asbinstore;
1225 parseerror(parser, "failed to apply operand %s", op->op);
1229 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1230 vec_push(sy->out, syexp(ctx, out));
1234 static bool parser_close_call(parser_t *parser, shunt *sy)
1236 /* was a function call */
1237 ast_expression *fun;
1243 vec_shrinkby(sy->ops, 1);
1244 fid = sy->ops[vec_size(sy->ops)].off;
1246 /* out[fid] is the function
1247 * everything above is parameters...
1248 * 0 params = nothing
1249 * 1 params = ast_expression
1253 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1254 parseerror(parser, "internal error: function call needs function and parameter list...");
1258 fun = sy->out[fid].out;
1260 if (fun == intrinsic_debug_typestring) {
1262 if (fid+2 != vec_size(sy->out) ||
1263 vec_last(sy->out).block)
1265 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1268 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1269 ast_unref(vec_last(sy->out).out);
1270 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1271 (ast_expression*)parser_const_string(parser, ty, false));
1272 vec_shrinkby(sy->out, 1);
1276 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1278 parseerror(parser, "internal error: failed to create ast_call node");
1282 if (fid+1 == vec_size(sy->out)) {
1285 } else if (fid+2 == vec_size(sy->out)) {
1287 vec_shrinkby(sy->out, 1);
1288 params = sy->out[vec_size(sy->out)].block;
1292 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1294 paramcount = vec_size(params->exprs);
1295 call->params = params->exprs;
1296 params->exprs = NULL;
1299 (void)!ast_call_check_types(call);
1301 parseerror(parser, "invalid function call");
1305 /* overwrite fid, the function, with a call */
1306 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1308 if (fun->expression.vtype != TYPE_FUNCTION) {
1309 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1313 if (!fun->expression.next) {
1314 parseerror(parser, "could not determine function return type");
1317 if (vec_size(fun->expression.params) != paramcount &&
1318 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1319 vec_size(fun->expression.params) < paramcount))
1322 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1324 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1325 if (opts.standard == COMPILER_GMQCC)
1328 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1329 " -> `%s` has been declared here: %s:%i",
1330 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1331 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1333 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1334 " -> it has been declared here: %s:%i",
1335 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1336 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1342 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1343 "too %s parameters for call to %s: expected %i, got %i\n"
1344 " -> `%s` has been declared here: %s:%i",
1345 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1346 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1348 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1349 "too %s parameters for function call: expected %i, got %i\n"
1350 " -> it has been declared here: %s:%i",
1351 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1352 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1360 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1362 if (!vec_size(sy->ops)) {
1363 parseerror(parser, "unmatched closing paren");
1366 /* this would for bit a + (x) because there are no operators inside (x)
1367 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1368 parseerror(parser, "empty parenthesis expression");
1372 while (vec_size(sy->ops)) {
1373 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1374 if (!parser_close_call(parser, sy))
1378 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1379 vec_shrinkby(sy->ops, 1);
1380 return !functions_only;
1382 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1385 /* pop off the parenthesis */
1386 vec_shrinkby(sy->ops, 1);
1387 /* then apply the index operator */
1388 if (!parser_sy_apply_operator(parser, sy))
1392 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1395 if (vec_last(parser->pot) != POT_TERNARY1) {
1396 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1399 vec_last(parser->pot) = POT_TERNARY2;
1400 /* pop off the parenthesis */
1401 vec_shrinkby(sy->ops, 1);
1404 if (!parser_sy_apply_operator(parser, sy))
1410 static void parser_reclassify_token(parser_t *parser)
1413 for (i = 0; i < operator_count; ++i) {
1414 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1415 parser->tok = TOKEN_OPERATOR;
1421 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1423 ast_expression *expr = NULL;
1425 bool wantop = false;
1426 bool gotmemberof = false;
1428 /* count the parens because an if starts with one, so the
1429 * end of a condition is an unmatched closing paren
1437 parser->lex->flags.noops = false;
1439 parser_reclassify_token(parser);
1444 gotmemberof = false;
1446 parser->memberof = 0;
1448 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1449 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1451 /* a translatable string */
1455 parseerror(parser, "expected operator or end of statement, got constant");
1459 parser->lex->flags.noops = true;
1460 if (!parser_next(parser) || parser->tok != '(') {
1461 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1464 parser->lex->flags.noops = false;
1465 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1466 parseerror(parser, "expected a constant string in translatable-string extension");
1469 val = parser_const_string(parser, parser_tokval(parser), true);
1473 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1474 DEBUGSHUNTDO(con_out("push string\n"));
1476 if (!parser_next(parser) || parser->tok != ')') {
1477 parseerror(parser, "expected closing paren after translatable string");
1481 else if (parser->tok == TOKEN_IDENT)
1483 ast_expression *var;
1485 parseerror(parser, "expected operator or end of statement");
1490 if (opts.standard == COMPILER_GMQCC)
1492 if (parser->memberof == TYPE_ENTITY) {
1493 /* still get vars first since there could be a fieldpointer */
1494 var = parser_find_var(parser, parser_tokval(parser));
1496 var = parser_find_field(parser, parser_tokval(parser));
1498 else if (parser->memberof == TYPE_VECTOR)
1500 parseerror(parser, "TODO: implement effective vector member access");
1503 else if (parser->memberof) {
1504 parseerror(parser, "namespace for member not found");
1508 var = parser_find_var(parser, parser_tokval(parser));
1510 var = parser_find_var(parser, parser_tokval(parser));
1512 var = parser_find_field(parser, parser_tokval(parser));
1516 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1517 var = (ast_expression*)intrinsic_debug_typestring;
1522 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1528 if (ast_istype(var, ast_value)) {
1529 ((ast_value*)var)->uses++;
1531 else if (ast_istype(var, ast_member)) {
1532 ast_member *mem = (ast_member*)var;
1533 if (ast_istype(mem->owner, ast_value))
1534 ((ast_value*)(mem->owner))->uses++;
1537 vec_push(sy.out, syexp(parser_ctx(parser), var));
1538 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1540 else if (parser->tok == TOKEN_FLOATCONST) {
1543 parseerror(parser, "expected operator or end of statement, got constant");
1547 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1550 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1551 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1553 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1556 parseerror(parser, "expected operator or end of statement, got constant");
1560 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1563 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1564 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1566 else if (parser->tok == TOKEN_STRINGCONST) {
1569 parseerror(parser, "expected operator or end of statement, got constant");
1573 val = parser_const_string(parser, parser_tokval(parser), false);
1576 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1577 DEBUGSHUNTDO(con_out("push string\n"));
1579 else if (parser->tok == TOKEN_VECTORCONST) {
1582 parseerror(parser, "expected operator or end of statement, got constant");
1586 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1589 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1590 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1591 parser_token(parser)->constval.v.x,
1592 parser_token(parser)->constval.v.y,
1593 parser_token(parser)->constval.v.z));
1595 else if (parser->tok == '(') {
1596 parseerror(parser, "internal error: '(' should be classified as operator");
1599 else if (parser->tok == '[') {
1600 parseerror(parser, "internal error: '[' should be classified as operator");
1603 else if (parser->tok == ')') {
1605 DEBUGSHUNTDO(con_out("do[op] )\n"));
1609 /* we do expect an operator next */
1610 /* closing an opening paren */
1611 if (!parser_close_paren(parser, &sy, false))
1613 if (vec_last(parser->pot) != POT_PAREN) {
1614 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1617 vec_pop(parser->pot);
1619 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1623 /* allowed for function calls */
1624 if (!parser_close_paren(parser, &sy, true))
1626 if (vec_last(parser->pot) != POT_PAREN) {
1627 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1630 vec_pop(parser->pot);
1634 else if (parser->tok == ']') {
1636 parseerror(parser, "operand expected");
1640 if (!parser_close_paren(parser, &sy, false))
1642 if (vec_last(parser->pot) != POT_PAREN) {
1643 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1646 vec_pop(parser->pot);
1649 else if (parser->tok == TOKEN_TYPENAME) {
1650 parseerror(parser, "unexpected typename");
1653 else if (parser->tok != TOKEN_OPERATOR) {
1655 parseerror(parser, "expected operator or end of statement");
1662 /* classify the operator */
1663 const oper_info *op;
1664 const oper_info *olast = NULL;
1666 for (o = 0; o < operator_count; ++o) {
1667 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1668 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1669 !strcmp(parser_tokval(parser), operators[o].op))
1674 if (o == operator_count) {
1675 /* no operator found... must be the end of the statement */
1678 /* found an operator */
1681 /* when declaring variables, a comma starts a new variable */
1682 if (op->id == opid1(',') && !parens && stopatcomma) {
1683 /* fixup the token */
1688 /* a colon without a pervious question mark cannot be a ternary */
1689 if (!ternaries && op->id == opid2(':','?')) {
1694 if (op->id == opid1(',')) {
1695 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1696 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1700 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1701 olast = &operators[vec_last(sy.ops).etype-1];
1704 (op->prec < olast->prec) ||
1705 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1707 if (!parser_sy_apply_operator(parser, &sy))
1709 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1710 olast = &operators[vec_last(sy.ops).etype-1];
1715 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1716 /* for gmqcc standard: open up the namespace of the previous type */
1717 ast_expression *prevex = vec_last(sy.out).out;
1719 parseerror(parser, "unexpected member operator");
1722 if (prevex->expression.vtype == TYPE_ENTITY)
1723 parser->memberof = TYPE_ENTITY;
1724 else if (prevex->expression.vtype == TYPE_VECTOR)
1725 parser->memberof = TYPE_VECTOR;
1727 parseerror(parser, "type error: type has no members");
1733 if (op->id == opid1('(')) {
1735 size_t sycount = vec_size(sy.out);
1736 DEBUGSHUNTDO(con_out("push [op] (\n"));
1737 ++parens; vec_push(parser->pot, POT_PAREN);
1738 /* we expected an operator, this is the function-call operator */
1739 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1741 ++parens; vec_push(parser->pot, POT_PAREN);
1742 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1743 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1746 } else if (op->id == opid1('[')) {
1748 parseerror(parser, "unexpected array subscript");
1751 ++parens; vec_push(parser->pot, POT_PAREN);
1752 /* push both the operator and the paren, this makes life easier */
1753 vec_push(sy.ops, syop(parser_ctx(parser), op));
1754 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1756 } else if (op->id == opid2('?',':')) {
1757 vec_push(sy.ops, syop(parser_ctx(parser), op));
1758 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1761 vec_push(parser->pot, POT_TERNARY1);
1762 } else if (op->id == opid2(':','?')) {
1763 if (!vec_size(parser->pot)) {
1764 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1767 if (vec_last(parser->pot) != POT_TERNARY1) {
1768 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1771 if (!parser_close_paren(parser, &sy, false))
1773 vec_push(sy.ops, syop(parser_ctx(parser), op));
1777 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1778 vec_push(sy.ops, syop(parser_ctx(parser), op));
1779 wantop = !!(op->flags & OP_SUFFIX);
1782 if (!parser_next(parser)) {
1785 if (parser->tok == ';' ||
1786 (!parens && parser->tok == ']'))
1792 while (vec_size(sy.ops)) {
1793 if (!parser_sy_apply_operator(parser, &sy))
1797 parser->lex->flags.noops = true;
1798 if (!vec_size(sy.out)) {
1799 parseerror(parser, "empty expression");
1802 expr = sy.out[0].out;
1805 DEBUGSHUNTDO(con_out("shunt done\n"));
1806 if (vec_size(parser->pot)) {
1807 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1810 vec_free(parser->pot);
1814 parser->lex->flags.noops = true;
1820 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1822 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1825 if (!parser_next(parser)) {
1832 static void parser_enterblock(parser_t *parser)
1834 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1835 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1836 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1837 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1838 vec_push(parser->_block_ctx, parser_ctx(parser));
1841 static bool parser_leaveblock(parser_t *parser)
1844 size_t locals, typedefs;
1846 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1847 parseerror(parser, "internal error: parser_leaveblock with no block");
1851 util_htdel(vec_last(parser->variables));
1852 vec_pop(parser->variables);
1853 if (!vec_size(parser->_blocklocals)) {
1854 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1858 locals = vec_last(parser->_blocklocals);
1859 vec_pop(parser->_blocklocals);
1860 while (vec_size(parser->_locals) != locals) {
1861 ast_expression *e = vec_last(parser->_locals);
1862 ast_value *v = (ast_value*)e;
1863 vec_pop(parser->_locals);
1864 if (ast_istype(e, ast_value) && !v->uses) {
1865 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
1870 typedefs = vec_last(parser->_blocktypedefs);
1871 while (vec_size(parser->_typedefs) != typedefs) {
1872 ast_delete(vec_last(parser->_typedefs));
1873 vec_pop(parser->_typedefs);
1875 util_htdel(vec_last(parser->typedefs));
1876 vec_pop(parser->typedefs);
1878 vec_pop(parser->_block_ctx);
1882 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1884 vec_push(parser->_locals, e);
1885 util_htset(vec_last(parser->variables), name, (void*)e);
1888 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
1892 ast_expression *prev;
1894 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
1897 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
1900 parseerror(parser, "internal error: failed to process condition");
1905 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
1907 /* vector types need to be cast to true booleans */
1908 ast_binary *bin = (ast_binary*)cond;
1909 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
1911 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
1913 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
1916 parseerror(parser, "internal error: failed to process condition");
1923 unary = (ast_unary*)cond;
1924 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
1926 cond = unary->operand;
1927 unary->operand = NULL;
1930 unary = (ast_unary*)cond;
1934 parseerror(parser, "internal error: failed to process condition");
1936 if (ifnot) *_ifnot = !*_ifnot;
1940 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1943 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
1946 lex_ctx ctx = parser_ctx(parser);
1948 (void)block; /* not touching */
1950 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1951 if (!parser_next(parser)) {
1952 parseerror(parser, "expected condition or 'not'");
1955 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
1957 if (!parser_next(parser)) {
1958 parseerror(parser, "expected condition in parenthesis");
1962 if (parser->tok != '(') {
1963 parseerror(parser, "expected 'if' condition in parenthesis");
1966 /* parse into the expression */
1967 if (!parser_next(parser)) {
1968 parseerror(parser, "expected 'if' condition after opening paren");
1971 /* parse the condition */
1972 cond = parse_expression_leave(parser, false);
1976 if (parser->tok != ')') {
1977 parseerror(parser, "expected closing paren after 'if' condition");
1981 /* parse into the 'then' branch */
1982 if (!parser_next(parser)) {
1983 parseerror(parser, "expected statement for on-true branch of 'if'");
1987 if (!parse_statement_or_block(parser, &ontrue)) {
1991 /* check for an else */
1992 if (!strcmp(parser_tokval(parser), "else")) {
1993 /* parse into the 'else' branch */
1994 if (!parser_next(parser)) {
1995 parseerror(parser, "expected on-false branch after 'else'");
2000 if (!parse_statement_or_block(parser, &onfalse)) {
2007 cond = process_condition(parser, cond, &ifnot);
2009 if (ontrue) ast_delete(ontrue);
2010 if (onfalse) ast_delete(onfalse);
2015 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2017 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2018 *out = (ast_expression*)ifthen;
2022 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2023 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2028 /* skip the 'while' and get the body */
2029 if (!parser_next(parser)) {
2030 if (OPTS_FLAG(LOOP_LABELS))
2031 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2033 parseerror(parser, "expected 'while' condition in parenthesis");
2037 if (parser->tok == ':') {
2038 if (!OPTS_FLAG(LOOP_LABELS))
2039 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2040 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2041 parseerror(parser, "expected loop label");
2044 label = util_strdup(parser_tokval(parser));
2045 if (!parser_next(parser)) {
2047 parseerror(parser, "expected 'while' condition in parenthesis");
2052 if (parser->tok != '(') {
2053 parseerror(parser, "expected 'while' condition in parenthesis");
2057 vec_push(parser->loops, label);
2059 rv = parse_while_go(parser, block, out);
2062 if (vec_last(parser->loops) != label) {
2063 parseerror(parser, "internal error: label stack corrupted");
2069 vec_pop(parser->loops);
2073 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2076 ast_expression *cond, *ontrue;
2080 lex_ctx ctx = parser_ctx(parser);
2082 (void)block; /* not touching */
2084 /* skip the 'while' and check for opening paren */
2085 if (!parser_next(parser) || parser->tok != '(') {
2086 parseerror(parser, "expected 'while' condition in parenthesis");
2089 /* parse into the expression */
2090 if (!parser_next(parser)) {
2091 parseerror(parser, "expected 'while' condition after opening paren");
2094 /* parse the condition */
2095 cond = parse_expression_leave(parser, false);
2099 if (parser->tok != ')') {
2100 parseerror(parser, "expected closing paren after 'while' condition");
2104 /* parse into the 'then' branch */
2105 if (!parser_next(parser)) {
2106 parseerror(parser, "expected while-loop body");
2110 if (!parse_statement_or_block(parser, &ontrue)) {
2115 cond = process_condition(parser, cond, &ifnot);
2120 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2121 *out = (ast_expression*)aloop;
2125 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2126 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2131 /* skip the 'do' and get the body */
2132 if (!parser_next(parser)) {
2133 if (OPTS_FLAG(LOOP_LABELS))
2134 parseerror(parser, "expected loop label or body");
2136 parseerror(parser, "expected loop body");
2140 if (parser->tok == ':') {
2141 if (!OPTS_FLAG(LOOP_LABELS))
2142 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2143 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2144 parseerror(parser, "expected loop label");
2147 label = util_strdup(parser_tokval(parser));
2148 if (!parser_next(parser)) {
2150 parseerror(parser, "expected loop body");
2155 vec_push(parser->loops, label);
2157 rv = parse_dowhile_go(parser, block, out);
2160 if (vec_last(parser->loops) != label) {
2161 parseerror(parser, "internal error: label stack corrupted");
2167 vec_pop(parser->loops);
2171 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2174 ast_expression *cond, *ontrue;
2178 lex_ctx ctx = parser_ctx(parser);
2180 (void)block; /* not touching */
2182 if (!parse_statement_or_block(parser, &ontrue))
2185 /* expect the "while" */
2186 if (parser->tok != TOKEN_KEYWORD ||
2187 strcmp(parser_tokval(parser), "while"))
2189 parseerror(parser, "expected 'while' and condition");
2194 /* skip the 'while' and check for opening paren */
2195 if (!parser_next(parser) || parser->tok != '(') {
2196 parseerror(parser, "expected 'while' condition in parenthesis");
2200 /* parse into the expression */
2201 if (!parser_next(parser)) {
2202 parseerror(parser, "expected 'while' condition after opening paren");
2206 /* parse the condition */
2207 cond = parse_expression_leave(parser, false);
2211 if (parser->tok != ')') {
2212 parseerror(parser, "expected closing paren after 'while' condition");
2218 if (!parser_next(parser) || parser->tok != ';') {
2219 parseerror(parser, "expected semicolon after condition");
2225 if (!parser_next(parser)) {
2226 parseerror(parser, "parse error");
2232 cond = process_condition(parser, cond, &ifnot);
2237 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2238 *out = (ast_expression*)aloop;
2242 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2243 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2248 /* skip the 'for' and check for opening paren */
2249 if (!parser_next(parser)) {
2250 if (OPTS_FLAG(LOOP_LABELS))
2251 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2253 parseerror(parser, "expected 'for' expressions in parenthesis");
2257 if (parser->tok == ':') {
2258 if (!OPTS_FLAG(LOOP_LABELS))
2259 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2260 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2261 parseerror(parser, "expected loop label");
2264 label = util_strdup(parser_tokval(parser));
2265 if (!parser_next(parser)) {
2267 parseerror(parser, "expected 'for' expressions in parenthesis");
2272 if (parser->tok != '(') {
2273 parseerror(parser, "expected 'for' expressions in parenthesis");
2277 vec_push(parser->loops, label);
2279 rv = parse_for_go(parser, block, out);
2282 if (vec_last(parser->loops) != label) {
2283 parseerror(parser, "internal error: label stack corrupted");
2289 vec_pop(parser->loops);
2292 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2295 ast_expression *initexpr, *cond, *increment, *ontrue;
2301 lex_ctx ctx = parser_ctx(parser);
2303 parser_enterblock(parser);
2310 /* parse into the expression */
2311 if (!parser_next(parser)) {
2312 parseerror(parser, "expected 'for' initializer after opening paren");
2317 if (parser->tok == TOKEN_IDENT)
2318 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2320 if (typevar || parser->tok == TOKEN_TYPENAME) {
2321 if (opts.standard != COMPILER_GMQCC) {
2322 if (parsewarning(parser, WARN_EXTENSIONS,
2323 "current standard does not allow variable declarations in for-loop initializers"))
2326 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, false))
2329 else if (parser->tok != ';')
2331 initexpr = parse_expression_leave(parser, false);
2336 /* move on to condition */
2337 if (parser->tok != ';') {
2338 parseerror(parser, "expected semicolon after for-loop initializer");
2341 if (!parser_next(parser)) {
2342 parseerror(parser, "expected for-loop condition");
2346 /* parse the condition */
2347 if (parser->tok != ';') {
2348 cond = parse_expression_leave(parser, false);
2353 /* move on to incrementor */
2354 if (parser->tok != ';') {
2355 parseerror(parser, "expected semicolon after for-loop initializer");
2358 if (!parser_next(parser)) {
2359 parseerror(parser, "expected for-loop condition");
2363 /* parse the incrementor */
2364 if (parser->tok != ')') {
2365 increment = parse_expression_leave(parser, false);
2368 if (!ast_side_effects(increment)) {
2369 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2375 if (parser->tok != ')') {
2376 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2379 /* parse into the 'then' branch */
2380 if (!parser_next(parser)) {
2381 parseerror(parser, "expected for-loop body");
2384 if (!parse_statement_or_block(parser, &ontrue))
2388 cond = process_condition(parser, cond, &ifnot);
2392 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2393 *out = (ast_expression*)aloop;
2395 if (!parser_leaveblock(parser))
2399 if (initexpr) ast_delete(initexpr);
2400 if (cond) ast_delete(cond);
2401 if (increment) ast_delete(increment);
2402 (void)!parser_leaveblock(parser);
2406 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2408 ast_expression *exp = NULL;
2409 ast_return *ret = NULL;
2410 ast_value *expected = parser->function->vtype;
2412 lex_ctx ctx = parser_ctx(parser);
2414 (void)block; /* not touching */
2416 if (!parser_next(parser)) {
2417 parseerror(parser, "expected return expression");
2421 if (parser->tok != ';') {
2422 exp = parse_expression(parser, false);
2426 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2427 parseerror(parser, "return with invalid expression");
2430 ret = ast_return_new(ctx, exp);
2436 if (!parser_next(parser))
2437 parseerror(parser, "parse error");
2438 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2439 if (opts.standard != COMPILER_GMQCC)
2440 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2442 parseerror(parser, "return without value");
2444 ret = ast_return_new(ctx, NULL);
2446 *out = (ast_expression*)ret;
2450 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2453 unsigned int levels = 0;
2454 lex_ctx ctx = parser_ctx(parser);
2456 (void)block; /* not touching */
2457 if (!parser_next(parser)) {
2458 parseerror(parser, "expected semicolon or loop label");
2462 if (parser->tok == TOKEN_IDENT) {
2463 if (!OPTS_FLAG(LOOP_LABELS))
2464 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2465 i = vec_size(parser->loops);
2467 if (parser->loops[i] && !strcmp(parser->loops[i], parser_tokval(parser)))
2470 parseerror(parser, "no such loop to %s: `%s`",
2471 (is_continue ? "continue" : "break out of"),
2472 parser_tokval(parser));
2477 if (!parser_next(parser)) {
2478 parseerror(parser, "expected semicolon");
2483 if (parser->tok != ';') {
2484 parseerror(parser, "expected semicolon");
2488 if (!parser_next(parser))
2489 parseerror(parser, "parse error");
2491 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2495 /* returns true when it was a variable qualifier, false otherwise!
2496 * on error, cvq is set to CV_WRONG
2498 static bool parse_var_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *noreturn, bool *is_static)
2500 bool had_const = false;
2501 bool had_var = false;
2502 bool had_noref = false;
2503 bool had_noreturn = false;
2504 bool had_attrib = false;
2505 bool had_static = false;
2509 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2511 /* parse an attribute */
2512 if (!parser_next(parser)) {
2513 parseerror(parser, "expected attribute after `[[`");
2517 if (!strcmp(parser_tokval(parser), "noreturn")) {
2518 had_noreturn = true;
2519 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2520 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2525 else if (!strcmp(parser_tokval(parser), "noref")) {
2527 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2528 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2535 /* Skip tokens until we hit a ]] */
2536 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2537 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2538 if (!parser_next(parser)) {
2539 parseerror(parser, "error inside attribute");
2546 else if (!strcmp(parser_tokval(parser), "static"))
2548 else if (!strcmp(parser_tokval(parser), "const"))
2550 else if (!strcmp(parser_tokval(parser), "var"))
2552 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2554 else if (!strcmp(parser_tokval(parser), "noref"))
2556 else if (!had_const && !had_var && !had_noref && !had_noreturn && !had_attrib && !had_static) {
2561 if (!parser_next(parser))
2571 *noreturn = had_noreturn;
2572 *is_static = had_static;
2575 parseerror(parser, "parse error after variable qualifier");
2580 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2582 ast_expression *operand;
2585 ast_switch *switchnode;
2586 ast_switch_case swcase;
2589 bool noref, noreturn, is_static;
2591 lex_ctx ctx = parser_ctx(parser);
2593 (void)block; /* not touching */
2596 /* parse over the opening paren */
2597 if (!parser_next(parser) || parser->tok != '(') {
2598 parseerror(parser, "expected switch operand in parenthesis");
2602 /* parse into the expression */
2603 if (!parser_next(parser)) {
2604 parseerror(parser, "expected switch operand");
2607 /* parse the operand */
2608 operand = parse_expression_leave(parser, false);
2612 switchnode = ast_switch_new(ctx, operand);
2615 if (parser->tok != ')') {
2616 ast_delete(switchnode);
2617 parseerror(parser, "expected closing paren after 'switch' operand");
2621 /* parse over the opening paren */
2622 if (!parser_next(parser) || parser->tok != '{') {
2623 ast_delete(switchnode);
2624 parseerror(parser, "expected list of cases");
2628 if (!parser_next(parser)) {
2629 ast_delete(switchnode);
2630 parseerror(parser, "expected 'case' or 'default'");
2634 /* new block; allow some variables to be declared here */
2635 parser_enterblock(parser);
2638 if (parser->tok == TOKEN_IDENT)
2639 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2640 if (typevar || parser->tok == TOKEN_TYPENAME) {
2641 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, false)) {
2642 ast_delete(switchnode);
2647 if (parse_var_qualifiers(parser, true, &cvq, &noref, &noreturn, &is_static))
2649 if (cvq == CV_WRONG) {
2650 ast_delete(switchnode);
2653 if (!parse_variable(parser, block, false, cvq, NULL, noref, noreturn, is_static)) {
2654 ast_delete(switchnode);
2663 while (parser->tok != '}') {
2664 ast_block *caseblock;
2666 if (!strcmp(parser_tokval(parser), "case")) {
2667 if (!parser_next(parser)) {
2668 ast_delete(switchnode);
2669 parseerror(parser, "expected expression for case");
2672 swcase.value = parse_expression_leave(parser, false);
2673 if (!swcase.value) {
2674 ast_delete(switchnode);
2675 parseerror(parser, "expected expression for case");
2678 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2679 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
2680 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2686 else if (!strcmp(parser_tokval(parser), "default")) {
2687 swcase.value = NULL;
2688 if (!parser_next(parser)) {
2689 ast_delete(switchnode);
2690 parseerror(parser, "expected colon");
2695 ast_delete(switchnode);
2696 parseerror(parser, "expected 'case' or 'default'");
2700 /* Now the colon and body */
2701 if (parser->tok != ':') {
2702 if (swcase.value) ast_unref(swcase.value);
2703 ast_delete(switchnode);
2704 parseerror(parser, "expected colon");
2708 if (!parser_next(parser)) {
2709 if (swcase.value) ast_unref(swcase.value);
2710 ast_delete(switchnode);
2711 parseerror(parser, "expected statements or case");
2714 caseblock = ast_block_new(parser_ctx(parser));
2716 if (swcase.value) ast_unref(swcase.value);
2717 ast_delete(switchnode);
2720 swcase.code = (ast_expression*)caseblock;
2721 vec_push(switchnode->cases, swcase);
2723 ast_expression *expr;
2724 if (parser->tok == '}')
2726 if (parser->tok == TOKEN_KEYWORD) {
2727 if (!strcmp(parser_tokval(parser), "case") ||
2728 !strcmp(parser_tokval(parser), "default"))
2733 if (!parse_statement(parser, caseblock, &expr, true)) {
2734 ast_delete(switchnode);
2739 if (!ast_block_add_expr(caseblock, expr)) {
2740 ast_delete(switchnode);
2746 parser_leaveblock(parser);
2749 if (parser->tok != '}') {
2750 ast_delete(switchnode);
2751 parseerror(parser, "expected closing paren of case list");
2754 if (!parser_next(parser)) {
2755 ast_delete(switchnode);
2756 parseerror(parser, "parse error after switch");
2759 *out = (ast_expression*)switchnode;
2763 static bool parse_goto(parser_t *parser, ast_expression **out)
2768 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2769 parseerror(parser, "expected label name after `goto`");
2773 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
2775 for (i = 0; i < vec_size(parser->labels); ++i) {
2776 if (!strcmp(parser->labels[i]->name, parser_tokval(parser))) {
2777 ast_goto_set_label(gt, parser->labels[i]);
2781 if (i == vec_size(parser->labels))
2782 vec_push(parser->gotos, gt);
2784 if (!parser_next(parser) || parser->tok != ';') {
2785 parseerror(parser, "semicolon expected after goto label");
2788 if (!parser_next(parser)) {
2789 parseerror(parser, "parse error after goto");
2793 *out = (ast_expression*)gt;
2797 static bool parse_skipwhite(parser_t *parser)
2800 if (!parser_next(parser))
2802 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
2803 return parser->tok < TOKEN_ERROR;
2806 static bool parse_eol(parser_t *parser)
2808 if (!parse_skipwhite(parser))
2810 return parser->tok == TOKEN_EOL;
2813 static bool parse_pragma_do(parser_t *parser)
2815 if (!parser_next(parser) ||
2816 parser->tok != TOKEN_IDENT ||
2817 strcmp(parser_tokval(parser), "pragma"))
2819 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
2822 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
2823 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
2827 if (!strcmp(parser_tokval(parser), "noref")) {
2828 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
2829 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
2832 parser->noref = !!parser_token(parser)->constval.i;
2833 if (!parse_eol(parser)) {
2834 parseerror(parser, "parse error after `noref` pragma");
2840 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
2847 static bool parse_pragma(parser_t *parser)
2850 parser->lex->flags.preprocessing = true;
2851 parser->lex->flags.mergelines = true;
2852 rv = parse_pragma_do(parser);
2853 if (parser->tok != TOKEN_EOL) {
2854 parseerror(parser, "junk after pragma");
2857 parser->lex->flags.preprocessing = false;
2858 parser->lex->flags.mergelines = false;
2859 if (!parser_next(parser)) {
2860 parseerror(parser, "parse error after pragma");
2866 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2868 bool noref, noreturn, is_static;
2870 ast_value *typevar = NULL;
2874 if (parser->tok == TOKEN_IDENT)
2875 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2877 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2879 /* local variable */
2881 parseerror(parser, "cannot declare a variable from here");
2884 if (opts.standard == COMPILER_QCC) {
2885 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2888 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, false))
2892 else if (parse_var_qualifiers(parser, !!block, &cvq, &noref, &noreturn, &is_static))
2894 if (cvq == CV_WRONG)
2896 return parse_variable(parser, block, true, cvq, NULL, noref, noreturn, is_static);
2898 else if (parser->tok == TOKEN_KEYWORD)
2900 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
2905 if (!parser_next(parser)) {
2906 parseerror(parser, "parse error after __builtin_debug_printtype");
2910 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
2912 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
2913 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
2914 if (!parser_next(parser)) {
2915 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
2921 if (!parse_statement(parser, block, out, allow_cases))
2924 con_out("__builtin_debug_printtype: got no output node\n");
2927 ast_type_to_string(*out, ty, sizeof(ty));
2928 con_out("__builtin_debug_printtype: `%s`\n", ty);
2933 else if (!strcmp(parser_tokval(parser), "return"))
2935 return parse_return(parser, block, out);
2937 else if (!strcmp(parser_tokval(parser), "if"))
2939 return parse_if(parser, block, out);
2941 else if (!strcmp(parser_tokval(parser), "while"))
2943 return parse_while(parser, block, out);
2945 else if (!strcmp(parser_tokval(parser), "do"))
2947 return parse_dowhile(parser, block, out);
2949 else if (!strcmp(parser_tokval(parser), "for"))
2951 if (opts.standard == COMPILER_QCC) {
2952 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2955 return parse_for(parser, block, out);
2957 else if (!strcmp(parser_tokval(parser), "break"))
2959 return parse_break_continue(parser, block, out, false);
2961 else if (!strcmp(parser_tokval(parser), "continue"))
2963 return parse_break_continue(parser, block, out, true);
2965 else if (!strcmp(parser_tokval(parser), "switch"))
2967 return parse_switch(parser, block, out);
2969 else if (!strcmp(parser_tokval(parser), "case") ||
2970 !strcmp(parser_tokval(parser), "default"))
2973 parseerror(parser, "unexpected 'case' label");
2978 else if (!strcmp(parser_tokval(parser), "goto"))
2980 return parse_goto(parser, out);
2982 else if (!strcmp(parser_tokval(parser), "typedef"))
2984 if (!parser_next(parser)) {
2985 parseerror(parser, "expected type definition after 'typedef'");
2988 return parse_typedef(parser);
2990 parseerror(parser, "Unexpected keyword");
2993 else if (parser->tok == '{')
2996 inner = parse_block(parser);
2999 *out = (ast_expression*)inner;
3002 else if (parser->tok == ':')
3006 if (!parser_next(parser)) {
3007 parseerror(parser, "expected label name");
3010 if (parser->tok != TOKEN_IDENT) {
3011 parseerror(parser, "label must be an identifier");
3014 label = ast_label_new(parser_ctx(parser), parser_tokval(parser));
3017 vec_push(parser->labels, label);
3018 *out = (ast_expression*)label;
3019 if (!parser_next(parser)) {
3020 parseerror(parser, "parse error after label");
3023 for (i = 0; i < vec_size(parser->gotos); ++i) {
3024 if (!strcmp(parser->gotos[i]->name, label->name)) {
3025 ast_goto_set_label(parser->gotos[i], label);
3026 vec_remove(parser->gotos, i, 1);
3032 else if (parser->tok == ';')
3034 if (!parser_next(parser)) {
3035 parseerror(parser, "parse error after empty statement");
3042 ast_expression *exp = parse_expression(parser, false);
3046 if (!ast_side_effects(exp)) {
3047 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3054 static bool parse_block_into(parser_t *parser, ast_block *block)
3058 parser_enterblock(parser);
3060 if (!parser_next(parser)) { /* skip the '{' */
3061 parseerror(parser, "expected function body");
3065 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3067 ast_expression *expr = NULL;
3068 if (parser->tok == '}')
3071 if (!parse_statement(parser, block, &expr, false)) {
3072 /* parseerror(parser, "parse error"); */
3078 if (!ast_block_add_expr(block, expr)) {
3085 if (parser->tok != '}') {
3088 (void)parser_next(parser);
3092 if (!parser_leaveblock(parser))
3094 return retval && !!block;
3097 static ast_block* parse_block(parser_t *parser)
3100 block = ast_block_new(parser_ctx(parser));
3103 if (!parse_block_into(parser, block)) {
3104 ast_block_delete(block);
3110 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3112 if (parser->tok == '{') {
3113 *out = (ast_expression*)parse_block(parser);
3116 return parse_statement(parser, NULL, out, false);
3119 static bool create_vector_members(ast_value *var, ast_member **me)
3122 size_t len = strlen(var->name);
3124 for (i = 0; i < 3; ++i) {
3125 char *name = (char*)mem_a(len+3);
3126 memcpy(name, var->name, len);
3128 name[len+1] = 'x'+i;
3130 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3139 do { ast_member_delete(me[--i]); } while(i);
3143 static bool parse_function_body(parser_t *parser, ast_value *var)
3145 ast_block *block = NULL;
3150 ast_expression *framenum = NULL;
3151 ast_expression *nextthink = NULL;
3152 /* None of the following have to be deleted */
3153 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3154 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3155 bool has_frame_think;
3159 has_frame_think = false;
3160 old = parser->function;
3162 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3163 parseerror(parser, "gotos/labels leaking");
3167 if (var->expression.flags & AST_FLAG_VARIADIC) {
3168 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3169 "variadic function with implementation will not be able to access additional parameters"))
3175 if (parser->tok == '[') {
3176 /* got a frame definition: [ framenum, nextthink ]
3177 * this translates to:
3178 * self.frame = framenum;
3179 * self.nextthink = time + 0.1;
3180 * self.think = nextthink;
3184 fld_think = parser_find_field(parser, "think");
3185 fld_nextthink = parser_find_field(parser, "nextthink");
3186 fld_frame = parser_find_field(parser, "frame");
3187 if (!fld_think || !fld_nextthink || !fld_frame) {
3188 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3189 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3192 gbl_time = parser_find_global(parser, "time");
3193 gbl_self = parser_find_global(parser, "self");
3194 if (!gbl_time || !gbl_self) {
3195 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3196 parseerror(parser, "please declare the following globals: `time`, `self`");
3200 if (!parser_next(parser))
3203 framenum = parse_expression_leave(parser, true);
3205 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3208 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3209 ast_unref(framenum);
3210 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3214 if (parser->tok != ',') {
3215 ast_unref(framenum);
3216 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3217 parseerror(parser, "Got a %i\n", parser->tok);
3221 if (!parser_next(parser)) {
3222 ast_unref(framenum);
3226 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3228 /* qc allows the use of not-yet-declared functions here
3229 * - this automatically creates a prototype */
3230 ast_value *thinkfunc;
3231 ast_expression *functype = fld_think->expression.next;
3233 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3234 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3235 ast_unref(framenum);
3236 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3240 if (!parser_next(parser)) {
3241 ast_unref(framenum);
3242 ast_delete(thinkfunc);
3246 vec_push(parser->globals, (ast_expression*)thinkfunc);
3247 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
3248 nextthink = (ast_expression*)thinkfunc;
3251 nextthink = parse_expression_leave(parser, true);
3253 ast_unref(framenum);
3254 parseerror(parser, "expected a think-function in [frame,think] notation");
3259 if (!ast_istype(nextthink, ast_value)) {
3260 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3264 if (retval && parser->tok != ']') {
3265 parseerror(parser, "expected closing `]` for [frame,think] notation");
3269 if (retval && !parser_next(parser)) {
3273 if (retval && parser->tok != '{') {
3274 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3279 ast_unref(nextthink);
3280 ast_unref(framenum);
3284 has_frame_think = true;
3287 block = ast_block_new(parser_ctx(parser));
3289 parseerror(parser, "failed to allocate block");
3290 if (has_frame_think) {
3291 ast_unref(nextthink);
3292 ast_unref(framenum);
3297 if (has_frame_think) {
3299 ast_expression *self_frame;
3300 ast_expression *self_nextthink;
3301 ast_expression *self_think;
3302 ast_expression *time_plus_1;
3303 ast_store *store_frame;
3304 ast_store *store_nextthink;
3305 ast_store *store_think;
3307 ctx = parser_ctx(parser);
3308 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3309 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3310 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3312 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3313 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3315 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3316 if (self_frame) ast_delete(self_frame);
3317 if (self_nextthink) ast_delete(self_nextthink);
3318 if (self_think) ast_delete(self_think);
3319 if (time_plus_1) ast_delete(time_plus_1);
3325 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3326 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3327 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3330 ast_delete(self_frame);
3333 if (!store_nextthink) {
3334 ast_delete(self_nextthink);
3338 ast_delete(self_think);
3342 if (store_frame) ast_delete(store_frame);
3343 if (store_nextthink) ast_delete(store_nextthink);
3344 if (store_think) ast_delete(store_think);
3347 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3348 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3349 !ast_block_add_expr(block, (ast_expression*)store_think))
3356 parseerror(parser, "failed to generate code for [frame,think]");
3357 ast_unref(nextthink);
3358 ast_unref(framenum);
3364 parser_enterblock(parser);
3366 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3368 ast_value *param = var->expression.params[parami];
3371 if (param->expression.vtype != TYPE_VECTOR &&
3372 (param->expression.vtype != TYPE_FIELD ||
3373 param->expression.next->expression.vtype != TYPE_VECTOR))
3378 if (!create_vector_members(param, me)) {
3379 ast_block_delete(block);
3383 for (e = 0; e < 3; ++e) {
3384 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3385 ast_block_collect(block, (ast_expression*)me[e]);
3389 func = ast_function_new(ast_ctx(var), var->name, var);
3391 parseerror(parser, "failed to allocate function for `%s`", var->name);
3392 ast_block_delete(block);
3395 vec_push(parser->functions, func);
3397 parser->function = func;
3398 if (!parse_block_into(parser, block)) {
3399 ast_block_delete(block);
3403 vec_push(func->blocks, block);
3405 parser->function = old;
3406 if (!parser_leaveblock(parser))
3408 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3409 parseerror(parser, "internal error: local scopes left");
3413 if (parser->tok == ';')
3414 return parser_next(parser);
3415 else if (opts.standard == COMPILER_QCC)
3416 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3420 vec_pop(parser->functions);
3421 ast_function_delete(func);
3422 var->constval.vfunc = NULL;
3425 (void)!parser_leaveblock(parser);
3426 parser->function = old;
3430 static ast_expression *array_accessor_split(
3435 ast_expression *left,
3436 ast_expression *right
3442 lex_ctx ctx = ast_ctx(array);
3444 if (!left || !right) {
3445 if (left) ast_delete(left);
3446 if (right) ast_delete(right);
3450 cmp = ast_binary_new(ctx, INSTR_LT,
3451 (ast_expression*)index,
3452 (ast_expression*)parser_const_float(parser, middle));
3456 parseerror(parser, "internal error: failed to create comparison for array setter");
3460 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3462 ast_delete(cmp); /* will delete left and right */
3463 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3467 return (ast_expression*)ifthen;
3470 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3472 lex_ctx ctx = ast_ctx(array);
3474 if (from+1 == afterend) {
3475 /* set this value */
3478 ast_array_index *subscript;
3480 int assignop = type_store_instr[value->expression.vtype];
3482 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3483 assignop = INSTR_STORE_V;
3485 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3489 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3491 ast_delete(subscript);
3495 block = ast_block_new(ctx);
3501 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3506 ret = ast_return_new(ctx, NULL);
3512 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3517 return (ast_expression*)block;
3519 ast_expression *left, *right;
3520 size_t diff = afterend - from;
3521 size_t middle = from + diff/2;
3522 left = array_setter_node(parser, array, index, value, from, middle);
3523 right = array_setter_node(parser, array, index, value, middle, afterend);
3524 return array_accessor_split(parser, array, index, middle, left, right);
3528 static ast_expression *array_field_setter_node(
3537 lex_ctx ctx = ast_ctx(array);
3539 if (from+1 == afterend) {
3540 /* set this value */
3543 ast_entfield *entfield;
3544 ast_array_index *subscript;
3546 int assignop = type_storep_instr[value->expression.vtype];
3548 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3549 assignop = INSTR_STOREP_V;
3551 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3555 entfield = ast_entfield_new_force(ctx,
3556 (ast_expression*)entity,
3557 (ast_expression*)subscript,
3558 (ast_expression*)subscript);
3560 ast_delete(subscript);
3564 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3566 ast_delete(entfield);
3570 block = ast_block_new(ctx);
3576 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3581 ret = ast_return_new(ctx, NULL);
3587 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3592 return (ast_expression*)block;
3594 ast_expression *left, *right;
3595 size_t diff = afterend - from;
3596 size_t middle = from + diff/2;
3597 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3598 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3599 return array_accessor_split(parser, array, index, middle, left, right);
3603 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3605 lex_ctx ctx = ast_ctx(array);
3607 if (from+1 == afterend) {
3609 ast_array_index *subscript;
3611 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3615 ret = ast_return_new(ctx, (ast_expression*)subscript);
3617 ast_delete(subscript);
3621 return (ast_expression*)ret;
3623 ast_expression *left, *right;
3624 size_t diff = afterend - from;
3625 size_t middle = from + diff/2;
3626 left = array_getter_node(parser, array, index, from, middle);
3627 right = array_getter_node(parser, array, index, middle, afterend);
3628 return array_accessor_split(parser, array, index, middle, left, right);
3632 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3634 ast_function *func = NULL;
3635 ast_value *fval = NULL;
3636 ast_block *body = NULL;
3638 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3640 parseerror(parser, "failed to create accessor function value");
3644 func = ast_function_new(ast_ctx(array), funcname, fval);
3647 parseerror(parser, "failed to create accessor function node");
3651 body = ast_block_new(ast_ctx(array));
3653 parseerror(parser, "failed to create block for array accessor");
3659 vec_push(func->blocks, body);
3662 vec_push(parser->accessors, fval);
3667 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
3669 ast_expression *root = NULL;
3670 ast_value *index = NULL;
3671 ast_value *value = NULL;
3675 if (!ast_istype(array->expression.next, ast_value)) {
3676 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3680 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3682 func = fval->constval.vfunc;
3683 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3685 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3686 value = ast_value_copy((ast_value*)array->expression.next);
3688 if (!index || !value) {
3689 parseerror(parser, "failed to create locals for array accessor");
3692 (void)!ast_value_set_name(value, "value"); /* not important */
3693 vec_push(fval->expression.params, index);
3694 vec_push(fval->expression.params, value);
3696 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
3698 parseerror(parser, "failed to build accessor search tree");
3702 array->setter = fval;
3703 return ast_block_add_expr(func->blocks[0], root);
3705 if (index) ast_delete(index);
3706 if (value) ast_delete(value);
3707 if (root) ast_delete(root);
3713 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
3715 ast_expression *root = NULL;
3716 ast_value *entity = NULL;
3717 ast_value *index = NULL;
3718 ast_value *value = NULL;
3722 if (!ast_istype(array->expression.next, ast_value)) {
3723 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3727 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3729 func = fval->constval.vfunc;
3730 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3732 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
3733 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3734 value = ast_value_copy((ast_value*)array->expression.next);
3735 if (!entity || !index || !value) {
3736 parseerror(parser, "failed to create locals for array accessor");
3739 (void)!ast_value_set_name(value, "value"); /* not important */
3740 vec_push(fval->expression.params, entity);
3741 vec_push(fval->expression.params, index);
3742 vec_push(fval->expression.params, value);
3744 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3746 parseerror(parser, "failed to build accessor search tree");
3750 array->setter = fval;
3751 return ast_block_add_expr(func->blocks[0], root);
3753 if (entity) ast_delete(entity);
3754 if (index) ast_delete(index);
3755 if (value) ast_delete(value);
3756 if (root) ast_delete(root);
3762 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3764 ast_expression *root = NULL;
3765 ast_value *index = NULL;
3769 /* NOTE: checking array->expression.next rather than elemtype since
3770 * for fields elemtype is a temporary fieldtype.
3772 if (!ast_istype(array->expression.next, ast_value)) {
3773 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3777 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3779 func = fval->constval.vfunc;
3780 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3782 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3785 parseerror(parser, "failed to create locals for array accessor");
3788 vec_push(fval->expression.params, index);
3790 root = array_getter_node(parser, array, index, 0, array->expression.count);
3792 parseerror(parser, "failed to build accessor search tree");
3796 array->getter = fval;
3797 return ast_block_add_expr(func->blocks[0], root);
3799 if (index) ast_delete(index);
3800 if (root) ast_delete(root);
3806 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3807 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3815 bool variadic = false;
3817 ctx = parser_ctx(parser);
3819 /* for the sake of less code we parse-in in this function */
3820 if (!parser_next(parser)) {
3821 parseerror(parser, "expected parameter list");
3827 /* parse variables until we hit a closing paren */
3828 while (parser->tok != ')') {
3830 /* there must be commas between them */
3831 if (parser->tok != ',') {
3832 parseerror(parser, "expected comma or end of parameter list");
3835 if (!parser_next(parser)) {
3836 parseerror(parser, "expected parameter");
3842 if (parser->tok == TOKEN_DOTS) {
3843 /* '...' indicates a varargs function */
3845 if (!parser_next(parser)) {
3846 parseerror(parser, "expected parameter");
3849 if (parser->tok != ')') {
3850 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3856 /* for anything else just parse a typename */
3857 param = parse_typename(parser, NULL, NULL);
3860 vec_push(params, param);
3861 if (param->expression.vtype >= TYPE_VARIANT) {
3862 char tname[1024]; /* typename is reserved in C++ */
3863 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
3864 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
3870 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
3874 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
3875 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3878 if (!parser_next(parser)) {
3879 parseerror(parser, "parse error after typename");
3883 /* now turn 'var' into a function type */
3884 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3885 fval->expression.next = (ast_expression*)var;
3887 fval->expression.flags |= AST_FLAG_VARIADIC;
3890 var->expression.params = params;
3897 for (i = 0; i < vec_size(params); ++i)
3898 ast_delete(params[i]);
3903 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3905 ast_expression *cexp;
3906 ast_value *cval, *tmp;
3909 ctx = parser_ctx(parser);
3911 if (!parser_next(parser)) {
3913 parseerror(parser, "expected array-size");
3917 cexp = parse_expression_leave(parser, true);
3919 if (!cexp || !ast_istype(cexp, ast_value)) {
3923 parseerror(parser, "expected array-size as constant positive integer");
3926 cval = (ast_value*)cexp;
3928 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3929 tmp->expression.next = (ast_expression*)var;
3932 if (cval->expression.vtype == TYPE_INTEGER)
3933 tmp->expression.count = cval->constval.vint;
3934 else if (cval->expression.vtype == TYPE_FLOAT)
3935 tmp->expression.count = cval->constval.vfloat;
3939 parseerror(parser, "array-size must be a positive integer constant");
3944 if (parser->tok != ']') {
3946 parseerror(parser, "expected ']' after array-size");
3949 if (!parser_next(parser)) {
3951 parseerror(parser, "error after parsing array size");
3957 /* Parse a complete typename.
3958 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3959 * but when parsing variables separated by comma
3960 * 'storebase' should point to where the base-type should be kept.
3961 * The base type makes up every bit of type information which comes *before* the
3964 * The following will be parsed in its entirety:
3966 * The 'basetype' in this case is 'void()'
3967 * and if there's a comma after it, say:
3969 * then the type-information 'void()' can be stored in 'storebase'
3971 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3973 ast_value *var, *tmp;
3976 const char *name = NULL;
3977 bool isfield = false;
3978 bool wasarray = false;
3979 size_t morefields = 0;
3981 ctx = parser_ctx(parser);
3983 /* types may start with a dot */
3984 if (parser->tok == '.') {
3986 /* if we parsed a dot we need a typename now */
3987 if (!parser_next(parser)) {
3988 parseerror(parser, "expected typename for field definition");
3992 /* Further dots are handled seperately because they won't be part of the
3995 while (parser->tok == '.') {
3997 if (!parser_next(parser)) {
3998 parseerror(parser, "expected typename for field definition");
4003 if (parser->tok == TOKEN_IDENT)
4004 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4005 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4006 parseerror(parser, "expected typename");
4010 /* generate the basic type value */
4011 if (cached_typedef) {
4012 var = ast_value_copy(cached_typedef);
4013 ast_value_set_name(var, "<type(from_def)>");
4015 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4017 for (; morefields; --morefields) {
4018 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4019 tmp->expression.next = (ast_expression*)var;
4023 /* do not yet turn into a field - remember:
4024 * .void() foo; is a field too
4025 * .void()() foo; is a function
4029 if (!parser_next(parser)) {
4031 parseerror(parser, "parse error after typename");
4035 /* an opening paren now starts the parameter-list of a function
4036 * this is where original-QC has parameter lists.
4037 * We allow a single parameter list here.
4038 * Much like fteqcc we don't allow `float()() x`
4040 if (parser->tok == '(') {
4041 var = parse_parameter_list(parser, var);
4046 /* store the base if requested */
4048 *storebase = ast_value_copy(var);
4050 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4051 tmp->expression.next = (ast_expression*)*storebase;
4056 /* there may be a name now */
4057 if (parser->tok == TOKEN_IDENT) {
4058 name = util_strdup(parser_tokval(parser));
4060 if (!parser_next(parser)) {
4062 parseerror(parser, "error after variable or field declaration");
4067 /* now this may be an array */
4068 if (parser->tok == '[') {
4070 var = parse_arraysize(parser, var);
4075 /* This is the point where we can turn it into a field */
4077 /* turn it into a field if desired */
4078 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4079 tmp->expression.next = (ast_expression*)var;
4083 /* now there may be function parens again */
4084 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
4085 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4086 if (parser->tok == '(' && wasarray)
4087 parseerror(parser, "arrays as part of a return type is not supported");
4088 while (parser->tok == '(') {
4089 var = parse_parameter_list(parser, var);
4098 /* finally name it */
4100 if (!ast_value_set_name(var, name)) {
4102 parseerror(parser, "internal error: failed to set name");
4105 /* free the name, ast_value_set_name duplicates */
4112 static bool parse_typedef(parser_t *parser)
4114 ast_value *typevar, *oldtype;
4115 ast_expression *old;
4117 typevar = parse_typename(parser, NULL, NULL);
4122 if ( (old = parser_find_var(parser, typevar->name)) ) {
4123 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4124 " -> `%s` has been declared here: %s:%i",
4125 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4126 ast_delete(typevar);
4130 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4131 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4132 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4133 ast_delete(typevar);
4137 vec_push(parser->_typedefs, typevar);
4138 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4140 if (parser->tok != ';') {
4141 parseerror(parser, "expected semicolon after typedef");
4144 if (!parser_next(parser)) {
4145 parseerror(parser, "parse error after typedef");
4152 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn, bool is_static)
4156 ast_expression *old;
4160 ast_value *basetype = NULL;
4162 bool isparam = false;
4163 bool isvector = false;
4164 bool cleanvar = true;
4165 bool wasarray = false;
4169 if (!localblock && is_static)
4170 parseerror(parser, "`static` qualifier is not supported in global scope");
4172 /* get the first complete variable */
4173 var = parse_typename(parser, &basetype, cached_typedef);
4176 ast_delete(basetype);
4184 /* Part 0: finish the type */
4185 if (parser->tok == '(') {
4186 if (opts.standard == COMPILER_QCC)
4187 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4188 var = parse_parameter_list(parser, var);
4194 /* we only allow 1-dimensional arrays */
4195 if (parser->tok == '[') {
4197 var = parse_arraysize(parser, var);
4203 if (parser->tok == '(' && wasarray) {
4204 parseerror(parser, "arrays as part of a return type is not supported");
4205 /* we'll still parse the type completely for now */
4207 /* for functions returning functions */
4208 while (parser->tok == '(') {
4209 if (opts.standard == COMPILER_QCC)
4210 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4211 var = parse_parameter_list(parser, var);
4218 var->cvq = qualifier;
4219 /* in a noref section we simply bump the usecount */
4220 if (noref || parser->noref)
4223 var->expression.flags |= AST_FLAG_NORETURN;
4226 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4227 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4228 * is then filled with the previous definition and the parameter-names replaced.
4231 /* Deal with end_sys_ vars */
4233 if (!strcmp(var->name, "end_sys_globals")) {
4235 parser->crc_globals = vec_size(parser->globals);
4238 else if (!strcmp(var->name, "end_sys_fields")) {
4240 parser->crc_fields = vec_size(parser->fields);
4243 if (was_end && var->expression.vtype == TYPE_FIELD) {
4244 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4245 "global '%s' hint should not be a field",
4246 parser_tokval(parser)))
4253 if (!nofields && var->expression.vtype == TYPE_FIELD)
4255 /* deal with field declarations */
4256 old = parser_find_field(parser, var->name);
4258 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4259 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
4268 parseerror(parser, "field `%s` already declared here: %s:%i",
4269 var->name, ast_ctx(old).file, ast_ctx(old).line);
4274 if (opts.standard == COMPILER_QCC &&
4275 (old = parser_find_global(parser, var->name)))
4277 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4278 parseerror(parser, "field `%s` already declared here: %s:%i",
4279 var->name, ast_ctx(old).file, ast_ctx(old).line);
4286 /* deal with other globals */
4287 old = parser_find_global(parser, var->name);
4288 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
4290 /* This is a function which had a prototype */
4291 if (!ast_istype(old, ast_value)) {
4292 parseerror(parser, "internal error: prototype is not an ast_value");
4296 proto = (ast_value*)old;
4297 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
4298 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
4300 ast_ctx(proto).file, ast_ctx(proto).line);
4304 /* we need the new parameter-names */
4305 for (i = 0; i < vec_size(proto->expression.params); ++i)
4306 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4314 if (opts.standard == COMPILER_GMQCC) {
4315 parseerror(parser, "global `%s` already declared here: %s:%i",
4316 var->name, ast_ctx(old).file, ast_ctx(old).line);
4320 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4321 "global `%s` already declared here: %s:%i",
4322 var->name, ast_ctx(old).file, ast_ctx(old).line))
4327 proto = (ast_value*)old;
4328 if (!ast_istype(old, ast_value)) {
4329 parseerror(parser, "internal error: not an ast_value");
4338 if (opts.standard == COMPILER_QCC &&
4339 (old = parser_find_field(parser, var->name)))
4341 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4342 parseerror(parser, "global `%s` already declared here: %s:%i",
4343 var->name, ast_ctx(old).file, ast_ctx(old).line);
4350 else /* it's not a global */
4352 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4353 if (old && !isparam) {
4354 parseerror(parser, "local `%s` already declared here: %s:%i",
4355 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4359 old = parser_find_local(parser, var->name, 0, &isparam);
4360 if (old && isparam) {
4361 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4362 "local `%s` is shadowing a parameter", var->name))
4364 parseerror(parser, "local `%s` already declared here: %s:%i",
4365 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4369 if (opts.standard != COMPILER_GMQCC) {
4378 * Create the global/local, and deal with vector types.
4381 if (var->expression.vtype == TYPE_VECTOR)
4383 else if (var->expression.vtype == TYPE_FIELD &&
4384 var->expression.next->expression.vtype == TYPE_VECTOR)
4388 if (!create_vector_members(var, me)) {
4395 /* deal with global variables, fields, functions */
4396 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4397 var->isfield = true;
4398 vec_push(parser->fields, (ast_expression*)var);
4399 util_htset(parser->htfields, var->name, var);
4401 for (i = 0; i < 3; ++i) {
4402 vec_push(parser->fields, (ast_expression*)me[i]);
4403 util_htset(parser->htfields, me[i]->name, me[i]);
4408 vec_push(parser->globals, (ast_expression*)var);
4409 util_htset(parser->htglobals, var->name, var);
4411 for (i = 0; i < 3; ++i) {
4412 vec_push(parser->globals, (ast_expression*)me[i]);
4413 util_htset(parser->htglobals, me[i]->name, me[i]);
4419 /* a static adds itself to be generated like any other global
4420 * but is added to the local namespace instead
4422 char *defname = NULL;
4423 size_t prefix_len, ln;
4425 ln = strlen(parser->function->name);
4426 vec_append(defname, ln, parser->function->name);
4428 vec_append(defname, 2, "::");
4429 /* remember the length up to here */
4430 prefix_len = vec_size(defname);
4432 /* Add it to the local scope */
4433 util_htset(vec_last(parser->variables), var->name, (void*)var);
4434 /* now rename the global */
4435 ln = strlen(var->name);
4436 vec_append(defname, ln, var->name);
4437 ast_value_set_name(var, defname);
4439 /* push it to the to-be-generated globals */
4440 vec_push(parser->globals, (ast_expression*)var);
4442 /* same game for the vector members */
4444 for (i = 0; i < 3; ++i) {
4445 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
4447 vec_shrinkto(defname, prefix_len);
4448 ln = strlen(me[i]->name);
4449 vec_append(defname, ln, me[i]->name);
4450 ast_member_set_name(me[i], defname);
4452 vec_push(parser->globals, (ast_expression*)me[i]);
4457 vec_push(localblock->locals, var);
4458 parser_addlocal(parser, var->name, (ast_expression*)var);
4460 for (i = 0; i < 3; ++i) {
4461 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4462 ast_block_collect(localblock, (ast_expression*)me[i]);
4468 me[0] = me[1] = me[2] = NULL;
4473 if (var->expression.vtype == TYPE_ARRAY) {
4475 snprintf(name, sizeof(name), "%s##SET", var->name);
4476 if (!parser_create_array_setter(parser, var, name))
4478 snprintf(name, sizeof(name), "%s##GET", var->name);
4479 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4482 else if (!localblock && !nofields &&
4483 var->expression.vtype == TYPE_FIELD &&
4484 var->expression.next->expression.vtype == TYPE_ARRAY)
4487 ast_expression *telem;
4489 ast_value *array = (ast_value*)var->expression.next;
4491 if (!ast_istype(var->expression.next, ast_value)) {
4492 parseerror(parser, "internal error: field element type must be an ast_value");
4496 snprintf(name, sizeof(name), "%s##SETF", var->name);
4497 if (!parser_create_array_field_setter(parser, array, name))
4500 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4501 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4502 tfield->expression.next = telem;
4503 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4504 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4512 if (parser->tok == ';') {
4513 ast_delete(basetype);
4514 if (!parser_next(parser)) {
4515 parseerror(parser, "error after variable declaration");
4521 if (parser->tok == ',')
4525 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4528 parseerror(parser, "missing comma or semicolon while parsing variables");
4532 if (localblock && opts.standard == COMPILER_QCC) {
4533 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4534 "initializing expression turns variable `%s` into a constant in this standard",
4541 if (parser->tok != '{') {
4542 if (parser->tok != '=') {
4543 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4547 if (!parser_next(parser)) {
4548 parseerror(parser, "error parsing initializer");
4552 else if (opts.standard == COMPILER_QCC) {
4553 parseerror(parser, "expected '=' before function body in this standard");
4556 if (parser->tok == '#') {
4557 ast_function *func = NULL;
4560 parseerror(parser, "cannot declare builtins within functions");
4563 if (var->expression.vtype != TYPE_FUNCTION) {
4564 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4567 if (!parser_next(parser)) {
4568 parseerror(parser, "expected builtin number");
4571 if (parser->tok != TOKEN_INTCONST) {
4572 parseerror(parser, "builtin number must be an integer constant");
4575 if (parser_token(parser)->constval.i < 0) {
4576 parseerror(parser, "builtin number must be an integer greater than zero");
4580 if (var->hasvalue) {
4581 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
4582 "builtin `%s` has already been defined\n"
4583 " -> previous declaration here: %s:%i",
4584 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
4588 func = ast_function_new(ast_ctx(var), var->name, var);
4590 parseerror(parser, "failed to allocate function for `%s`", var->name);
4593 vec_push(parser->functions, func);
4595 func->builtin = -parser_token(parser)->constval.i-1;
4598 if (!parser_next(parser)) {
4599 parseerror(parser, "expected comma or semicolon");
4601 ast_function_delete(func);
4602 var->constval.vfunc = NULL;
4606 else if (parser->tok == '{' || parser->tok == '[')
4609 parseerror(parser, "cannot declare functions within functions");
4614 ast_ctx(proto) = parser_ctx(parser);
4616 if (!parse_function_body(parser, var))
4618 ast_delete(basetype);
4619 for (i = 0; i < vec_size(parser->gotos); ++i)
4620 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
4621 vec_free(parser->gotos);
4622 vec_free(parser->labels);
4625 ast_expression *cexp;
4628 cexp = parse_expression_leave(parser, true);
4633 cval = (ast_value*)cexp;
4634 if (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
4635 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
4638 if (opts.standard != COMPILER_GMQCC &&
4639 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4640 qualifier != CV_VAR)
4642 var->cvq = CV_CONST;
4644 var->hasvalue = true;
4645 if (cval->expression.vtype == TYPE_STRING)
4646 var->constval.vstring = parser_strdup(cval->constval.vstring);
4647 else if (cval->expression.vtype == TYPE_FIELD)
4648 var->constval.vfield = cval;
4650 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
4655 shunt sy = { NULL, NULL };
4658 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
4659 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
4660 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
4661 if (!parser_sy_apply_operator(parser, &sy))
4664 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
4665 parseerror(parser, "internal error: leaked operands");
4666 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
4676 if (parser->tok == ',') {
4677 if (!parser_next(parser)) {
4678 parseerror(parser, "expected another variable");
4682 if (parser->tok != TOKEN_IDENT) {
4683 parseerror(parser, "expected another variable");
4686 var = ast_value_copy(basetype);
4688 ast_value_set_name(var, parser_tokval(parser));
4689 if (!parser_next(parser)) {
4690 parseerror(parser, "error parsing variable declaration");
4696 if (parser->tok != ';') {
4697 parseerror(parser, "missing semicolon after variables");
4701 if (!parser_next(parser)) {
4702 parseerror(parser, "parse error after variable declaration");
4706 ast_delete(basetype);
4710 if (cleanvar && var)
4712 ast_delete(basetype);
4716 ast_delete(basetype);
4717 if (cleanvar && var)
4719 if (me[0]) ast_member_delete(me[0]);
4720 if (me[1]) ast_member_delete(me[1]);
4721 if (me[2]) ast_member_delete(me[2]);
4725 static bool parser_global_statement(parser_t *parser)
4729 bool noreturn = false;
4730 bool is_static = false;
4731 ast_value *istype = NULL;
4733 if (parser->tok == TOKEN_IDENT)
4734 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
4736 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
4738 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, false);
4740 else if (parse_var_qualifiers(parser, false, &cvq, &noref, &noreturn, &is_static))
4742 if (cvq == CV_WRONG)
4744 return parse_variable(parser, NULL, true, cvq, NULL, noref, noreturn, is_static);
4746 else if (parser->tok == TOKEN_KEYWORD)
4748 if (!strcmp(parser_tokval(parser), "typedef")) {
4749 if (!parser_next(parser)) {
4750 parseerror(parser, "expected type definition after 'typedef'");
4753 return parse_typedef(parser);
4755 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
4758 else if (parser->tok == '#')
4760 return parse_pragma(parser);
4762 else if (parser->tok == '$')
4764 if (!parser_next(parser)) {
4765 parseerror(parser, "parse error");
4771 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
4777 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
4779 return util_crc16(old, str, strlen(str));
4782 static void progdefs_crc_file(const char *str)
4784 /* write to progdefs.h here */
4788 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
4790 old = progdefs_crc_sum(old, str);
4791 progdefs_crc_file(str);
4795 static void generate_checksum(parser_t *parser)
4797 uint16_t crc = 0xFFFF;
4801 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
4802 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
4804 progdefs_crc_file("\tint\tpad;\n");
4805 progdefs_crc_file("\tint\tofs_return[3];\n");
4806 progdefs_crc_file("\tint\tofs_parm0[3];\n");
4807 progdefs_crc_file("\tint\tofs_parm1[3];\n");
4808 progdefs_crc_file("\tint\tofs_parm2[3];\n");
4809 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4810 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4811 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4812 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4813 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4815 for (i = 0; i < parser->crc_globals; ++i) {
4816 if (!ast_istype(parser->globals[i], ast_value))
4818 value = (ast_value*)(parser->globals[i]);
4819 switch (value->expression.vtype) {
4820 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4821 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4822 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4823 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4825 crc = progdefs_crc_both(crc, "\tint\t");
4828 crc = progdefs_crc_both(crc, value->name);
4829 crc = progdefs_crc_both(crc, ";\n");
4831 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4832 for (i = 0; i < parser->crc_fields; ++i) {
4833 if (!ast_istype(parser->fields[i], ast_value))
4835 value = (ast_value*)(parser->fields[i]);
4836 switch (value->expression.next->expression.vtype) {
4837 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4838 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4839 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4840 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4842 crc = progdefs_crc_both(crc, "\tint\t");
4845 crc = progdefs_crc_both(crc, value->name);
4846 crc = progdefs_crc_both(crc, ";\n");
4848 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4853 static parser_t *parser;
4859 parser = (parser_t*)mem_a(sizeof(parser_t));
4863 memset(parser, 0, sizeof(*parser));
4865 for (i = 0; i < operator_count; ++i) {
4866 if (operators[i].id == opid1('=')) {
4867 parser->assign_op = operators+i;
4871 if (!parser->assign_op) {
4872 printf("internal error: initializing parser: failed to find assign operator\n");
4877 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4878 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4879 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4880 vec_push(parser->_blocktypedefs, 0);
4884 bool parser_compile()
4886 /* initial lexer/parser state */
4887 parser->lex->flags.noops = true;
4889 if (parser_next(parser))
4891 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4893 if (!parser_global_statement(parser)) {
4894 if (parser->tok == TOKEN_EOF)
4895 parseerror(parser, "unexpected eof");
4896 else if (compile_errors)
4897 parseerror(parser, "there have been errors, bailing out");
4898 lex_close(parser->lex);
4904 parseerror(parser, "parse error");
4905 lex_close(parser->lex);
4910 lex_close(parser->lex);
4913 return !compile_errors;
4916 bool parser_compile_file(const char *filename)
4918 parser->lex = lex_open(filename);
4920 con_err("failed to open file \"%s\"\n", filename);
4923 return parser_compile();
4926 bool parser_compile_string(const char *name, const char *str, size_t len)
4928 parser->lex = lex_open_string(str, len, name);
4930 con_err("failed to create lexer for string \"%s\"\n", name);
4933 return parser_compile();
4936 void parser_cleanup()
4939 for (i = 0; i < vec_size(parser->accessors); ++i) {
4940 ast_delete(parser->accessors[i]->constval.vfunc);
4941 parser->accessors[i]->constval.vfunc = NULL;
4942 ast_delete(parser->accessors[i]);
4944 for (i = 0; i < vec_size(parser->functions); ++i) {
4945 ast_delete(parser->functions[i]);
4947 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4948 ast_delete(parser->imm_vector[i]);
4950 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4951 ast_delete(parser->imm_string[i]);
4953 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4954 ast_delete(parser->imm_float[i]);
4956 for (i = 0; i < vec_size(parser->fields); ++i) {
4957 ast_delete(parser->fields[i]);
4959 for (i = 0; i < vec_size(parser->globals); ++i) {
4960 ast_delete(parser->globals[i]);
4962 vec_free(parser->accessors);
4963 vec_free(parser->functions);
4964 vec_free(parser->imm_vector);
4965 vec_free(parser->imm_string);
4966 vec_free(parser->imm_float);
4967 vec_free(parser->globals);
4968 vec_free(parser->fields);
4970 for (i = 0; i < vec_size(parser->variables); ++i)
4971 util_htdel(parser->variables[i]);
4972 vec_free(parser->variables);
4973 vec_free(parser->_blocklocals);
4974 vec_free(parser->_locals);
4976 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4977 ast_delete(parser->_typedefs[i]);
4978 vec_free(parser->_typedefs);
4979 for (i = 0; i < vec_size(parser->typedefs); ++i)
4980 util_htdel(parser->typedefs[i]);
4981 vec_free(parser->typedefs);
4982 vec_free(parser->_blocktypedefs);
4984 vec_free(parser->_block_ctx);
4986 vec_free(parser->labels);
4987 vec_free(parser->gotos);
4992 bool parser_finish(const char *output)
4998 if (compile_errors) {
4999 con_out("*** there were compile errors\n");
5003 ir = ir_builder_new("gmqcc_out");
5005 con_out("failed to allocate builder\n");
5009 for (i = 0; i < vec_size(parser->fields); ++i) {
5012 if (!ast_istype(parser->fields[i], ast_value))
5014 field = (ast_value*)parser->fields[i];
5015 hasvalue = field->hasvalue;
5016 field->hasvalue = false;
5017 if (!ast_global_codegen((ast_value*)field, ir, true)) {
5018 con_out("failed to generate field %s\n", field->name);
5019 ir_builder_delete(ir);
5024 ast_expression *subtype;
5025 field->hasvalue = true;
5026 subtype = field->expression.next;
5027 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
5028 if (subtype->expression.vtype == TYPE_FIELD)
5029 ifld->fieldtype = subtype->expression.next->expression.vtype;
5030 else if (subtype->expression.vtype == TYPE_FUNCTION)
5031 ifld->outtype = subtype->expression.next->expression.vtype;
5032 (void)!ir_value_set_field(field->ir_v, ifld);
5035 for (i = 0; i < vec_size(parser->globals); ++i) {
5037 if (!ast_istype(parser->globals[i], ast_value))
5039 asvalue = (ast_value*)(parser->globals[i]);
5040 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
5041 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
5042 "unused global: `%s`", asvalue->name);
5044 if (!ast_global_codegen(asvalue, ir, false)) {
5045 con_out("failed to generate global %s\n", asvalue->name);
5046 ir_builder_delete(ir);
5050 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5051 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
5052 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
5053 ir_builder_delete(ir);
5057 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5058 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
5059 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
5060 ir_builder_delete(ir);
5064 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5065 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
5066 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
5067 ir_builder_delete(ir);
5071 for (i = 0; i < vec_size(parser->globals); ++i) {
5073 if (!ast_istype(parser->globals[i], ast_value))
5075 asvalue = (ast_value*)(parser->globals[i]);
5076 if (!ast_generate_accessors(asvalue, ir)) {
5077 ir_builder_delete(ir);
5081 for (i = 0; i < vec_size(parser->fields); ++i) {
5083 asvalue = (ast_value*)(parser->fields[i]->expression.next);
5085 if (!ast_istype((ast_expression*)asvalue, ast_value))
5087 if (asvalue->expression.vtype != TYPE_ARRAY)
5089 if (!ast_generate_accessors(asvalue, ir)) {
5090 ir_builder_delete(ir);
5094 for (i = 0; i < vec_size(parser->functions); ++i) {
5095 if (!ast_function_codegen(parser->functions[i], ir)) {
5096 con_out("failed to generate function %s\n", parser->functions[i]->name);
5097 ir_builder_delete(ir);
5102 ir_builder_dump(ir, con_out);
5103 for (i = 0; i < vec_size(parser->functions); ++i) {
5104 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
5105 con_out("failed to finalize function %s\n", parser->functions[i]->name);
5106 ir_builder_delete(ir);
5111 if (compile_Werrors) {
5112 con_out("*** there were warnings treated as errors\n");
5113 compile_show_werrors();
5119 ir_builder_dump(ir, con_out);
5121 generate_checksum(parser);
5123 if (!ir_builder_generate(ir, output)) {
5124 con_out("*** failed to generate output file\n");
5125 ir_builder_delete(ir);
5130 ir_builder_delete(ir);