5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
6 * this software and associated documentation files (the "Software"), to deal in
7 * the Software without restriction, including without limitation the rights to
8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is furnished to do
10 * so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in all
13 * copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 #define PARSER_HT_FIELDS 0
30 #define PARSER_HT_GLOBALS 1
31 /* beginning of locals */
32 #define PARSER_HT_LOCALS 2
34 #define PARSER_HT_SIZE 1024
35 #define TYPEDEF_HT_SIZE 16
41 ast_expression **globals;
42 ast_expression **fields;
43 ast_function **functions;
44 ast_value **imm_float;
45 ast_value **imm_string;
46 ast_value **imm_vector;
49 /* must be deleted first, they reference immediates and values */
50 ast_value **accessors;
52 ast_value *imm_float_zero;
53 ast_value *imm_float_one;
54 ast_value *imm_vector_zero;
59 ast_function *function;
61 /* All the labels the function defined...
62 * Should they be in ast_function instead?
67 /* A list of hashtables for each scope */
73 /* not to be used directly, we use the hash table */
74 ast_expression **_locals;
76 ast_value **_typedefs;
77 size_t *_blocktypedefs;
82 /* we store the '=' operator info */
83 const oper_info *assign_op;
85 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
86 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
87 * anything else: type error
91 /* Keep track of our ternary vs parenthesis nesting state.
92 * If we reach a 'comma' operator in a ternary without a paren,
93 * we shall trigger -Wternary-precedence.
95 enum { POT_PAREN, POT_TERNARY1, POT_TERNARY2 } *pot;
101 static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10;
103 static void parser_enterblock(parser_t *parser);
104 static bool parser_leaveblock(parser_t *parser);
105 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
106 static bool parse_typedef(parser_t *parser);
107 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn);
108 static ast_block* parse_block(parser_t *parser);
109 static bool parse_block_into(parser_t *parser, ast_block *block);
110 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
111 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
112 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
113 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
115 static void parseerror(parser_t *parser, const char *fmt, ...)
122 con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap);
126 /* returns true if it counts as an error */
127 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
132 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
137 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
142 r = vcompile_warning(ctx, warntype, fmt, ap);
147 /**********************************************************************
148 * some maths used for constant folding
151 vector vec3_add(vector a, vector b)
160 vector vec3_sub(vector a, vector b)
169 qcfloat vec3_mulvv(vector a, vector b)
171 return (a.x * b.x + a.y * b.y + a.z * b.z);
174 vector vec3_mulvf(vector a, float b)
183 /**********************************************************************
187 bool parser_next(parser_t *parser)
189 /* lex_do kills the previous token */
190 parser->tok = lex_do(parser->lex);
191 if (parser->tok == TOKEN_EOF)
193 if (parser->tok >= TOKEN_ERROR) {
194 parseerror(parser, "lex error");
200 #define parser_tokval(p) ((p)->lex->tok.value)
201 #define parser_token(p) (&((p)->lex->tok))
202 #define parser_ctx(p) ((p)->lex->tok.ctx)
204 static ast_value* parser_const_float(parser_t *parser, double d)
208 for (i = 0; i < vec_size(parser->imm_float); ++i) {
209 const double compare = parser->imm_float[i]->constval.vfloat;
210 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
211 return parser->imm_float[i];
213 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
215 out->hasvalue = true;
216 out->constval.vfloat = d;
217 vec_push(parser->imm_float, out);
221 static ast_value* parser_const_float_0(parser_t *parser)
223 if (!parser->imm_float_zero)
224 parser->imm_float_zero = parser_const_float(parser, 0);
225 return parser->imm_float_zero;
228 static ast_value* parser_const_float_1(parser_t *parser)
230 if (!parser->imm_float_one)
231 parser->imm_float_one = parser_const_float(parser, 1);
232 return parser->imm_float_one;
235 static char *parser_strdup(const char *str)
238 /* actually dup empty strings */
239 char *out = mem_a(1);
243 return util_strdup(str);
246 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
250 for (i = 0; i < vec_size(parser->imm_string); ++i) {
251 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
252 return parser->imm_string[i];
256 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
257 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
259 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
261 out->hasvalue = true;
262 out->constval.vstring = parser_strdup(str);
263 vec_push(parser->imm_string, out);
267 static ast_value* parser_const_vector(parser_t *parser, vector v)
271 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
272 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
273 return parser->imm_vector[i];
275 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
277 out->hasvalue = true;
278 out->constval.vvec = v;
279 vec_push(parser->imm_vector, out);
283 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
289 return parser_const_vector(parser, v);
292 static ast_value* parser_const_vector_0(parser_t *parser)
294 if (!parser->imm_vector_zero)
295 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
296 return parser->imm_vector_zero;
299 static ast_expression* parser_find_field(parser_t *parser, const char *name)
301 return util_htget(parser->htfields, name);
304 static ast_expression* parser_find_global(parser_t *parser, const char *name)
306 return util_htget(parser->htglobals, name);
309 static ast_expression* parser_find_param(parser_t *parser, const char *name)
313 if (!parser->function)
315 fun = parser->function->vtype;
316 for (i = 0; i < vec_size(fun->expression.params); ++i) {
317 if (!strcmp(fun->expression.params[i]->name, name))
318 return (ast_expression*)(fun->expression.params[i]);
323 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
328 hash = util_hthash(parser->htglobals, name);
331 for (i = vec_size(parser->variables); i > upto;) {
333 if ( (e = util_htgeth(parser->variables[i], name, hash)) )
337 return parser_find_param(parser, name);
340 static ast_expression* parser_find_var(parser_t *parser, const char *name)
344 v = parser_find_local(parser, name, 0, &dummy);
345 if (!v) v = parser_find_global(parser, name);
349 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
353 hash = util_hthash(parser->typedefs[0], name);
355 for (i = vec_size(parser->typedefs); i > upto;) {
357 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
365 size_t etype; /* 0 = expression, others are operators */
369 ast_block *block; /* for commas and function calls */
378 #define SY_PAREN_EXPR '('
379 #define SY_PAREN_FUNC 'f'
380 #define SY_PAREN_INDEX '['
381 #define SY_PAREN_TERNARY '?'
383 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
394 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
398 e.out = (ast_expression*)v;
405 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
407 e.etype = 1 + (op - operators);
416 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
428 # define DEBUGSHUNTDO(x) x
430 # define DEBUGSHUNTDO(x)
433 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
434 * so we need to rotate it to become ent.(foo[n]).
436 static bool rotate_entfield_array_index_nodes(ast_expression **out)
438 ast_array_index *index;
439 ast_entfield *entfield;
443 ast_expression *entity;
445 lex_ctx ctx = ast_ctx(*out);
447 if (!ast_istype(*out, ast_array_index))
449 index = (ast_array_index*)*out;
451 if (!ast_istype(index->array, ast_entfield))
453 entfield = (ast_entfield*)index->array;
455 if (!ast_istype(entfield->field, ast_value))
457 field = (ast_value*)entfield->field;
460 entity = entfield->entity;
464 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
465 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
466 *out = (ast_expression*)entfield;
471 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
473 switch (v->expression.vtype) {
475 return !!v->constval.vfloat;
477 return !!v->constval.vint;
479 if (OPTS_FLAG(CORRECT_LOGIC))
480 return v->constval.vvec.x &&
481 v->constval.vvec.y &&
484 return !!(v->constval.vvec.x);
486 if (!v->constval.vstring)
488 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
490 return !!v->constval.vstring[0];
492 compile_error(ctx, "internal error: immediate_is_true on invalid type");
493 return !!v->constval.vfunc;
497 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
501 ast_expression *out = NULL;
502 ast_expression *exprs[3];
503 ast_block *blocks[3];
504 ast_value *asvalue[3];
505 ast_binstore *asbinstore;
506 size_t i, assignop, addop, subop;
507 qcint generated_op = 0;
512 if (!vec_size(sy->ops)) {
513 parseerror(parser, "internal error: missing operator");
517 if (vec_last(sy->ops).paren) {
518 parseerror(parser, "unmatched parenthesis");
522 op = &operators[vec_last(sy->ops).etype - 1];
523 ctx = vec_last(sy->ops).ctx;
525 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
527 if (vec_size(sy->out) < op->operands) {
528 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
529 op->op, (int)op->id);
533 vec_shrinkby(sy->ops, 1);
535 /* op(:?) has no input and no output */
539 vec_shrinkby(sy->out, op->operands);
540 for (i = 0; i < op->operands; ++i) {
541 exprs[i] = sy->out[vec_size(sy->out)+i].out;
542 blocks[i] = sy->out[vec_size(sy->out)+i].block;
543 asvalue[i] = (ast_value*)exprs[i];
546 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
547 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
551 #define NotSameType(T) \
552 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
553 exprs[0]->expression.vtype != T)
554 #define CanConstFold1(A) \
555 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
556 (A)->expression.vtype != TYPE_FUNCTION)
557 #define CanConstFold(A, B) \
558 (CanConstFold1(A) && CanConstFold1(B))
559 #define ConstV(i) (asvalue[(i)]->constval.vvec)
560 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
561 #define ConstS(i) (asvalue[(i)]->constval.vstring)
565 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
569 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
570 if (exprs[1]->expression.vtype != TYPE_FIELD) {
571 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
574 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
576 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
577 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
581 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
587 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
588 !(exprs[0]->expression.vtype == TYPE_FIELD &&
589 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
591 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
592 parseerror(parser, "cannot index value of type %s", ty1);
595 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
596 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
597 parseerror(parser, "index must be of type float, not %s", ty1);
600 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
601 if (rotate_entfield_array_index_nodes(&out))
604 /* This is not broken in fteqcc anymore */
605 if (opts.standard != COMPILER_GMQCC) {
606 /* this error doesn't need to make us bail out */
607 (void)!parsewarning(parser, WARN_EXTENSIONS,
608 "accessing array-field members of an entity without parenthesis\n"
609 " -> this is an extension from -std=gmqcc");
617 if (!ast_block_add_expr(blocks[0], exprs[1]))
620 blocks[0] = ast_block_new(ctx);
621 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
622 !ast_block_add_expr(blocks[0], exprs[1]))
627 if (!ast_block_set_type(blocks[0], exprs[1]))
630 vec_push(sy->out, syblock(ctx, blocks[0]));
637 switch (exprs[0]->expression.vtype) {
639 if (CanConstFold1(exprs[0]))
640 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
642 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
643 (ast_expression*)parser_const_float_0(parser),
647 if (CanConstFold1(exprs[0]))
648 out = (ast_expression*)parser_const_vector_f(parser,
649 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
651 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
652 (ast_expression*)parser_const_vector_0(parser),
656 parseerror(parser, "invalid types used in expression: cannot negate type %s",
657 type_name[exprs[0]->expression.vtype]);
663 switch (exprs[0]->expression.vtype) {
665 if (CanConstFold1(exprs[0]))
666 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
668 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
671 if (CanConstFold1(exprs[0]))
672 out = (ast_expression*)parser_const_float(parser,
673 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
675 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
678 if (CanConstFold1(exprs[0])) {
679 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
680 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
682 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
684 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
685 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
687 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
690 /* we don't constant-fold NOT for these types */
692 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
695 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
698 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
699 type_name[exprs[0]->expression.vtype]);
705 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
706 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
708 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
709 type_name[exprs[0]->expression.vtype],
710 type_name[exprs[1]->expression.vtype]);
713 switch (exprs[0]->expression.vtype) {
715 if (CanConstFold(exprs[0], exprs[1]))
717 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
720 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
723 if (CanConstFold(exprs[0], exprs[1]))
724 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
726 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
729 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
730 type_name[exprs[0]->expression.vtype],
731 type_name[exprs[1]->expression.vtype]);
736 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
737 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
739 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
740 type_name[exprs[1]->expression.vtype],
741 type_name[exprs[0]->expression.vtype]);
744 switch (exprs[0]->expression.vtype) {
746 if (CanConstFold(exprs[0], exprs[1]))
747 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
749 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
752 if (CanConstFold(exprs[0], exprs[1]))
753 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
755 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
758 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
759 type_name[exprs[1]->expression.vtype],
760 type_name[exprs[0]->expression.vtype]);
765 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
766 exprs[0]->expression.vtype != TYPE_VECTOR &&
767 exprs[0]->expression.vtype != TYPE_FLOAT &&
768 exprs[1]->expression.vtype != TYPE_VECTOR &&
769 exprs[1]->expression.vtype != TYPE_FLOAT)
771 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
772 type_name[exprs[1]->expression.vtype],
773 type_name[exprs[0]->expression.vtype]);
776 switch (exprs[0]->expression.vtype) {
778 if (exprs[1]->expression.vtype == TYPE_VECTOR)
780 if (CanConstFold(exprs[0], exprs[1]))
781 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
783 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
787 if (CanConstFold(exprs[0], exprs[1]))
788 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
790 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
794 if (exprs[1]->expression.vtype == TYPE_FLOAT)
796 if (CanConstFold(exprs[0], exprs[1]))
797 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
799 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
803 if (CanConstFold(exprs[0], exprs[1]))
804 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
806 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
810 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
811 type_name[exprs[1]->expression.vtype],
812 type_name[exprs[0]->expression.vtype]);
817 if (NotSameType(TYPE_FLOAT)) {
818 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
819 type_name[exprs[0]->expression.vtype],
820 type_name[exprs[1]->expression.vtype]);
823 if (CanConstFold(exprs[0], exprs[1]))
824 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
826 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
830 parseerror(parser, "qc does not have a modulo operator");
834 if (NotSameType(TYPE_FLOAT)) {
835 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
836 type_name[exprs[0]->expression.vtype],
837 type_name[exprs[1]->expression.vtype]);
840 if (CanConstFold(exprs[0], exprs[1]))
841 out = (ast_expression*)parser_const_float(parser,
842 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
843 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
845 out = (ast_expression*)ast_binary_new(ctx,
846 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
850 parseerror(parser, "TODO: bitxor");
855 case opid3('<','<','='):
856 case opid3('>','>','='):
857 parseerror(parser, "TODO: shifts");
861 generated_op += 1; /* INSTR_OR */
863 generated_op += INSTR_AND;
865 if (NotSameType(TYPE_FLOAT)) {
866 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
867 type_name[exprs[0]->expression.vtype],
868 type_name[exprs[1]->expression.vtype]);
869 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
870 parseerror(parser, "TODO: optional early out");
874 if (CanConstFold(exprs[0], exprs[1]))
876 if (OPTS_FLAG(PERL_LOGIC)) {
877 if (immediate_is_true(ctx, asvalue[0]))
881 out = (ast_expression*)parser_const_float(parser,
882 ( (generated_op == INSTR_OR)
883 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
884 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
889 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
890 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
891 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
892 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
895 if (OPTS_FLAG(CORRECT_LOGIC)) {
896 /* non-floats need to be NOTed */
897 for (i = 0; i < 2; ++i) {
898 if (exprs[i]->expression.vtype != TYPE_FLOAT) {
899 if (type_not_instr[exprs[i]->expression.vtype] == AINSTR_END) {
900 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
901 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
902 parseerror(parser, "invalid types for logical operation with -fcorrect-logic: %s and %s", ty1, ty2);
905 out = (ast_expression*)ast_unary_new(ctx, type_not_instr[exprs[i]->expression.vtype], exprs[i]);
908 exprs[i] = out; out = NULL;
910 if (OPTS_FLAG(PERL_LOGIC))
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 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
992 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
998 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1003 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1004 exprs[0]->expression.vtype == TYPE_FIELD &&
1005 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1007 assignop = type_store_instr[TYPE_VECTOR];
1010 assignop = type_store_instr[exprs[0]->expression.vtype];
1013 if (assignop == AINSTR_END) {
1014 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1015 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1016 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1018 else if (!ast_compare_type(exprs[0], exprs[1])) {
1019 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1020 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1021 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1022 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1023 exprs[1]->expression.vtype == TYPE_FUNCTION)
1025 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1026 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
1032 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1035 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1036 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1038 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1040 case opid3('+','+','P'):
1041 case opid3('-','-','P'):
1043 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1044 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1045 parseerror(parser, "invalid type for prefix increment: %s", ty1);
1048 if (op->id == opid3('+','+','P'))
1049 addop = INSTR_ADD_F;
1051 addop = INSTR_SUB_F;
1052 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1053 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1055 if (ast_istype(exprs[0], ast_entfield)) {
1056 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1058 (ast_expression*)parser_const_float_1(parser));
1060 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1062 (ast_expression*)parser_const_float_1(parser));
1065 case opid3('S','+','+'):
1066 case opid3('S','-','-'):
1068 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1069 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1070 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1073 if (op->id == opid3('S','+','+')) {
1074 addop = INSTR_ADD_F;
1075 subop = INSTR_SUB_F;
1077 addop = INSTR_SUB_F;
1078 subop = INSTR_ADD_F;
1080 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1081 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1083 if (ast_istype(exprs[0], ast_entfield)) {
1084 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1086 (ast_expression*)parser_const_float_1(parser));
1088 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1090 (ast_expression*)parser_const_float_1(parser));
1094 out = (ast_expression*)ast_binary_new(ctx, subop,
1096 (ast_expression*)parser_const_float_1(parser));
1098 case opid2('+','='):
1099 case opid2('-','='):
1100 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1101 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1103 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1104 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1105 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1109 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1110 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1112 if (ast_istype(exprs[0], ast_entfield))
1113 assignop = type_storep_instr[exprs[0]->expression.vtype];
1115 assignop = type_store_instr[exprs[0]->expression.vtype];
1116 switch (exprs[0]->expression.vtype) {
1118 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1119 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1120 exprs[0], exprs[1]);
1123 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1124 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1125 exprs[0], exprs[1]);
1128 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1129 type_name[exprs[0]->expression.vtype],
1130 type_name[exprs[1]->expression.vtype]);
1134 case opid2('*','='):
1135 case opid2('/','='):
1136 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1137 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1138 exprs[0]->expression.vtype == TYPE_VECTOR))
1140 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1141 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1142 parseerror(parser, "invalid types used in expression: %s and %s",
1146 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1147 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1149 if (ast_istype(exprs[0], ast_entfield))
1150 assignop = type_storep_instr[exprs[0]->expression.vtype];
1152 assignop = type_store_instr[exprs[0]->expression.vtype];
1153 switch (exprs[0]->expression.vtype) {
1155 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1156 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1157 exprs[0], exprs[1]);
1160 if (op->id == opid2('*','=')) {
1161 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1162 exprs[0], exprs[1]);
1164 /* there's no DIV_VF */
1165 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1166 (ast_expression*)parser_const_float_1(parser),
1170 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1175 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1176 type_name[exprs[0]->expression.vtype],
1177 type_name[exprs[1]->expression.vtype]);
1181 case opid2('&','='):
1182 case opid2('|','='):
1183 if (NotSameType(TYPE_FLOAT)) {
1184 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1185 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1186 parseerror(parser, "invalid types used in expression: %s and %s",
1190 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1191 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1193 if (ast_istype(exprs[0], ast_entfield))
1194 assignop = type_storep_instr[exprs[0]->expression.vtype];
1196 assignop = type_store_instr[exprs[0]->expression.vtype];
1197 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1198 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1199 exprs[0], exprs[1]);
1201 case opid3('&','~','='):
1202 /* This is like: a &= ~(b);
1203 * But QC has no bitwise-not, so we implement it as
1206 if (NotSameType(TYPE_FLOAT)) {
1207 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1208 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1209 parseerror(parser, "invalid types used in expression: %s and %s",
1213 if (ast_istype(exprs[0], ast_entfield))
1214 assignop = type_storep_instr[exprs[0]->expression.vtype];
1216 assignop = type_store_instr[exprs[0]->expression.vtype];
1217 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1220 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1221 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1223 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1224 asbinstore->keep_dest = true;
1225 out = (ast_expression*)asbinstore;
1231 parseerror(parser, "failed to apply operand %s", op->op);
1235 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1236 vec_push(sy->out, syexp(ctx, out));
1240 static bool parser_close_call(parser_t *parser, shunt *sy)
1242 /* was a function call */
1243 ast_expression *fun;
1249 vec_shrinkby(sy->ops, 1);
1250 fid = sy->ops[vec_size(sy->ops)].off;
1252 /* out[fid] is the function
1253 * everything above is parameters...
1254 * 0 params = nothing
1255 * 1 params = ast_expression
1259 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1260 parseerror(parser, "internal error: function call needs function and parameter list...");
1264 fun = sy->out[fid].out;
1266 if (fun == intrinsic_debug_typestring) {
1268 if (fid+2 != vec_size(sy->out) ||
1269 vec_last(sy->out).block)
1271 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1274 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1275 ast_unref(vec_last(sy->out).out);
1276 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1277 (ast_expression*)parser_const_string(parser, ty, false));
1278 vec_shrinkby(sy->out, 1);
1282 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1284 parseerror(parser, "internal error: failed to create ast_call node");
1288 if (fid+1 == vec_size(sy->out)) {
1291 } else if (fid+2 == vec_size(sy->out)) {
1293 vec_shrinkby(sy->out, 1);
1294 params = sy->out[vec_size(sy->out)].block;
1298 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1300 paramcount = vec_size(params->exprs);
1301 call->params = params->exprs;
1302 params->exprs = NULL;
1305 if (!ast_call_check_types(call))
1308 parseerror(parser, "invalid function call");
1312 /* overwrite fid, the function, with a call */
1313 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1315 if (fun->expression.vtype != TYPE_FUNCTION) {
1316 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1320 if (!fun->expression.next) {
1321 parseerror(parser, "could not determine function return type");
1324 if (vec_size(fun->expression.params) != paramcount &&
1325 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1326 vec_size(fun->expression.params) < paramcount))
1329 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1331 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1332 if (opts.standard == COMPILER_GMQCC)
1335 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1336 " -> `%s` has been declared here: %s:%i",
1337 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1338 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1340 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1341 " -> it has been declared here: %s:%i",
1342 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1343 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1349 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1350 "too %s parameters for call to %s: expected %i, got %i\n"
1351 " -> `%s` has been declared here: %s:%i",
1352 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1353 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1355 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1356 "too %s parameters for function call: expected %i, got %i\n"
1357 " -> it has been declared here: %s:%i",
1358 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1359 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1367 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1369 if (!vec_size(sy->ops)) {
1370 parseerror(parser, "unmatched closing paren");
1373 /* this would for bit a + (x) because there are no operators inside (x)
1374 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1375 parseerror(parser, "empty parenthesis expression");
1379 while (vec_size(sy->ops)) {
1380 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1381 if (!parser_close_call(parser, sy))
1385 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1386 vec_shrinkby(sy->ops, 1);
1387 return !functions_only;
1389 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1392 /* pop off the parenthesis */
1393 vec_shrinkby(sy->ops, 1);
1394 /* then apply the index operator */
1395 if (!parser_sy_apply_operator(parser, sy))
1399 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1402 if (vec_last(parser->pot) != POT_TERNARY1) {
1403 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1406 vec_last(parser->pot) = POT_TERNARY2;
1407 /* pop off the parenthesis */
1408 vec_shrinkby(sy->ops, 1);
1411 if (!parser_sy_apply_operator(parser, sy))
1417 static void parser_reclassify_token(parser_t *parser)
1420 for (i = 0; i < operator_count; ++i) {
1421 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1422 parser->tok = TOKEN_OPERATOR;
1428 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1430 ast_expression *expr = NULL;
1432 bool wantop = false;
1433 bool gotmemberof = false;
1435 /* count the parens because an if starts with one, so the
1436 * end of a condition is an unmatched closing paren
1444 parser->lex->flags.noops = false;
1446 parser_reclassify_token(parser);
1451 gotmemberof = false;
1453 parser->memberof = 0;
1455 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1456 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1458 /* a translatable string */
1462 parseerror(parser, "expected operator or end of statement, got constant");
1466 parser->lex->flags.noops = true;
1467 if (!parser_next(parser) || parser->tok != '(') {
1468 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1471 parser->lex->flags.noops = false;
1472 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1473 parseerror(parser, "expected a constant string in translatable-string extension");
1476 val = parser_const_string(parser, parser_tokval(parser), true);
1480 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1481 DEBUGSHUNTDO(con_out("push string\n"));
1483 if (!parser_next(parser) || parser->tok != ')') {
1484 parseerror(parser, "expected closing paren after translatable string");
1488 else if (parser->tok == TOKEN_IDENT)
1490 ast_expression *var;
1492 parseerror(parser, "expected operator or end of statement");
1497 if (opts.standard == COMPILER_GMQCC)
1499 if (parser->memberof == TYPE_ENTITY) {
1500 /* still get vars first since there could be a fieldpointer */
1501 var = parser_find_var(parser, parser_tokval(parser));
1503 var = parser_find_field(parser, parser_tokval(parser));
1505 else if (parser->memberof == TYPE_VECTOR)
1507 parseerror(parser, "TODO: implement effective vector member access");
1510 else if (parser->memberof) {
1511 parseerror(parser, "namespace for member not found");
1515 var = parser_find_var(parser, parser_tokval(parser));
1517 var = parser_find_var(parser, parser_tokval(parser));
1519 var = parser_find_field(parser, parser_tokval(parser));
1523 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1524 var = (ast_expression*)intrinsic_debug_typestring;
1529 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1535 if (ast_istype(var, ast_value)) {
1536 ((ast_value*)var)->uses++;
1538 else if (ast_istype(var, ast_member)) {
1539 ast_member *mem = (ast_member*)var;
1540 if (ast_istype(mem->owner, ast_value))
1541 ((ast_value*)(mem->owner))->uses++;
1544 vec_push(sy.out, syexp(parser_ctx(parser), var));
1545 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1547 else if (parser->tok == TOKEN_FLOATCONST) {
1550 parseerror(parser, "expected operator or end of statement, got constant");
1554 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1557 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1558 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1560 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1563 parseerror(parser, "expected operator or end of statement, got constant");
1567 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1570 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1571 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1573 else if (parser->tok == TOKEN_STRINGCONST) {
1576 parseerror(parser, "expected operator or end of statement, got constant");
1580 val = parser_const_string(parser, parser_tokval(parser), false);
1583 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1584 DEBUGSHUNTDO(con_out("push string\n"));
1586 else if (parser->tok == TOKEN_VECTORCONST) {
1589 parseerror(parser, "expected operator or end of statement, got constant");
1593 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1596 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1597 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1598 parser_token(parser)->constval.v.x,
1599 parser_token(parser)->constval.v.y,
1600 parser_token(parser)->constval.v.z));
1602 else if (parser->tok == '(') {
1603 parseerror(parser, "internal error: '(' should be classified as operator");
1606 else if (parser->tok == '[') {
1607 parseerror(parser, "internal error: '[' should be classified as operator");
1610 else if (parser->tok == ')') {
1612 DEBUGSHUNTDO(con_out("do[op] )\n"));
1616 /* we do expect an operator next */
1617 /* closing an opening paren */
1618 if (!parser_close_paren(parser, &sy, false))
1620 if (vec_last(parser->pot) != POT_PAREN) {
1621 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1624 vec_pop(parser->pot);
1626 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1630 /* allowed for function calls */
1631 if (!parser_close_paren(parser, &sy, true))
1633 if (vec_last(parser->pot) != POT_PAREN) {
1634 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1637 vec_pop(parser->pot);
1641 else if (parser->tok == ']') {
1643 parseerror(parser, "operand expected");
1647 if (!parser_close_paren(parser, &sy, false))
1649 if (vec_last(parser->pot) != POT_PAREN) {
1650 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1653 vec_pop(parser->pot);
1656 else if (parser->tok == TOKEN_TYPENAME) {
1657 parseerror(parser, "unexpected typename");
1660 else if (parser->tok != TOKEN_OPERATOR) {
1662 parseerror(parser, "expected operator or end of statement");
1669 /* classify the operator */
1670 const oper_info *op;
1671 const oper_info *olast = NULL;
1673 for (o = 0; o < operator_count; ++o) {
1674 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1675 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1676 !strcmp(parser_tokval(parser), operators[o].op))
1681 if (o == operator_count) {
1682 /* no operator found... must be the end of the statement */
1685 /* found an operator */
1688 /* when declaring variables, a comma starts a new variable */
1689 if (op->id == opid1(',') && !parens && stopatcomma) {
1690 /* fixup the token */
1695 /* a colon without a pervious question mark cannot be a ternary */
1696 if (!ternaries && op->id == opid2(':','?')) {
1701 if (op->id == opid1(',')) {
1702 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1703 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1707 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1708 olast = &operators[vec_last(sy.ops).etype-1];
1711 (op->prec < olast->prec) ||
1712 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1714 if (!parser_sy_apply_operator(parser, &sy))
1716 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1717 olast = &operators[vec_last(sy.ops).etype-1];
1722 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1723 /* for gmqcc standard: open up the namespace of the previous type */
1724 ast_expression *prevex = vec_last(sy.out).out;
1726 parseerror(parser, "unexpected member operator");
1729 if (prevex->expression.vtype == TYPE_ENTITY)
1730 parser->memberof = TYPE_ENTITY;
1731 else if (prevex->expression.vtype == TYPE_VECTOR)
1732 parser->memberof = TYPE_VECTOR;
1734 parseerror(parser, "type error: type has no members");
1740 if (op->id == opid1('(')) {
1742 size_t sycount = vec_size(sy.out);
1743 DEBUGSHUNTDO(con_out("push [op] (\n"));
1744 ++parens; vec_push(parser->pot, POT_PAREN);
1745 /* we expected an operator, this is the function-call operator */
1746 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1748 ++parens; vec_push(parser->pot, POT_PAREN);
1749 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1750 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1753 } else if (op->id == opid1('[')) {
1755 parseerror(parser, "unexpected array subscript");
1758 ++parens; vec_push(parser->pot, POT_PAREN);
1759 /* push both the operator and the paren, this makes life easier */
1760 vec_push(sy.ops, syop(parser_ctx(parser), op));
1761 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1763 } else if (op->id == opid2('?',':')) {
1764 vec_push(sy.ops, syop(parser_ctx(parser), op));
1765 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1768 vec_push(parser->pot, POT_TERNARY1);
1769 } else if (op->id == opid2(':','?')) {
1770 if (!vec_size(parser->pot)) {
1771 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1774 if (vec_last(parser->pot) != POT_TERNARY1) {
1775 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1778 if (!parser_close_paren(parser, &sy, false))
1780 vec_push(sy.ops, syop(parser_ctx(parser), op));
1784 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1785 vec_push(sy.ops, syop(parser_ctx(parser), op));
1786 wantop = !!(op->flags & OP_SUFFIX);
1789 if (!parser_next(parser)) {
1792 if (parser->tok == ';' ||
1793 (!parens && parser->tok == ']'))
1799 while (vec_size(sy.ops)) {
1800 if (!parser_sy_apply_operator(parser, &sy))
1804 parser->lex->flags.noops = true;
1805 if (!vec_size(sy.out)) {
1806 parseerror(parser, "empty expression");
1809 expr = sy.out[0].out;
1812 DEBUGSHUNTDO(con_out("shunt done\n"));
1813 if (vec_size(parser->pot)) {
1814 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1817 vec_free(parser->pot);
1821 parser->lex->flags.noops = true;
1827 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1829 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1832 if (!parser_next(parser)) {
1839 static void parser_enterblock(parser_t *parser)
1841 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1842 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1843 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1844 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1845 vec_push(parser->_block_ctx, parser_ctx(parser));
1848 static bool parser_leaveblock(parser_t *parser)
1851 size_t locals, typedefs;
1853 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1854 parseerror(parser, "internal error: parser_leaveblock with no block");
1858 util_htdel(vec_last(parser->variables));
1859 vec_pop(parser->variables);
1860 if (!vec_size(parser->_blocklocals)) {
1861 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1865 locals = vec_last(parser->_blocklocals);
1866 vec_pop(parser->_blocklocals);
1867 while (vec_size(parser->_locals) != locals) {
1868 ast_expression *e = vec_last(parser->_locals);
1869 ast_value *v = (ast_value*)e;
1870 vec_pop(parser->_locals);
1871 if (ast_istype(e, ast_value) && !v->uses) {
1872 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name)) {
1879 typedefs = vec_last(parser->_blocktypedefs);
1880 while (vec_size(parser->_typedefs) != typedefs) {
1881 ast_delete(vec_last(parser->_typedefs));
1882 vec_pop(parser->_typedefs);
1884 util_htdel(vec_last(parser->typedefs));
1885 vec_pop(parser->typedefs);
1887 vec_pop(parser->_block_ctx);
1891 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1893 vec_push(parser->_locals, e);
1894 util_htset(vec_last(parser->variables), name, (void*)e);
1897 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
1902 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING) {
1903 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
1906 else if (OPTS_FLAG(CORRECT_LOGIC)) {
1907 /* everything must use a NOT_ */
1908 unary = (ast_unary*)cond;
1909 if (!ast_istype(cond, ast_unary) || unary->op < INSTR_NOT_F || unary->op > INSTR_NOT_FNC)
1911 /* use the right NOT_ */
1912 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), type_not_instr[cond->expression.vtype], cond);
1917 unary = (ast_unary*)cond;
1918 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F && unary->operand->expression.vtype != TYPE_STRING)
1920 cond = unary->operand;
1921 unary->operand = NULL;
1924 unary = (ast_unary*)cond;
1928 parseerror(parser, "internal error: failed to process condition");
1930 if (ifnot) *_ifnot = !*_ifnot;
1934 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1937 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
1940 lex_ctx ctx = parser_ctx(parser);
1942 (void)block; /* not touching */
1944 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1945 if (!parser_next(parser)) {
1946 parseerror(parser, "expected condition or 'not'");
1949 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
1951 if (!parser_next(parser)) {
1952 parseerror(parser, "expected condition in parenthesis");
1956 if (parser->tok != '(') {
1957 parseerror(parser, "expected 'if' condition in parenthesis");
1960 /* parse into the expression */
1961 if (!parser_next(parser)) {
1962 parseerror(parser, "expected 'if' condition after opening paren");
1965 /* parse the condition */
1966 cond = parse_expression_leave(parser, false);
1970 if (parser->tok != ')') {
1971 parseerror(parser, "expected closing paren after 'if' condition");
1975 /* parse into the 'then' branch */
1976 if (!parser_next(parser)) {
1977 parseerror(parser, "expected statement for on-true branch of 'if'");
1981 if (!parse_statement_or_block(parser, &ontrue)) {
1985 /* check for an else */
1986 if (!strcmp(parser_tokval(parser), "else")) {
1987 /* parse into the 'else' branch */
1988 if (!parser_next(parser)) {
1989 parseerror(parser, "expected on-false branch after 'else'");
1994 if (!parse_statement_or_block(parser, &onfalse)) {
2001 cond = process_condition(parser, cond, &ifnot);
2003 if (ontrue) ast_delete(ontrue);
2004 if (onfalse) ast_delete(onfalse);
2009 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2011 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2012 *out = (ast_expression*)ifthen;
2016 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2019 ast_expression *cond, *ontrue;
2021 lex_ctx ctx = parser_ctx(parser);
2023 (void)block; /* not touching */
2025 /* skip the 'while' and check for opening paren */
2026 if (!parser_next(parser) || parser->tok != '(') {
2027 parseerror(parser, "expected 'while' condition in parenthesis");
2030 /* parse into the expression */
2031 if (!parser_next(parser)) {
2032 parseerror(parser, "expected 'while' condition after opening paren");
2035 /* parse the condition */
2036 cond = parse_expression_leave(parser, false);
2040 if (parser->tok != ')') {
2041 parseerror(parser, "expected closing paren after 'while' condition");
2045 /* parse into the 'then' branch */
2046 if (!parser_next(parser)) {
2047 parseerror(parser, "expected while-loop body");
2051 if (!parse_statement_or_block(parser, &ontrue)) {
2056 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
2057 *out = (ast_expression*)aloop;
2061 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2064 ast_expression *cond, *ontrue;
2066 lex_ctx ctx = parser_ctx(parser);
2068 (void)block; /* not touching */
2070 /* skip the 'do' and get the body */
2071 if (!parser_next(parser)) {
2072 parseerror(parser, "expected loop body");
2075 if (!parse_statement_or_block(parser, &ontrue))
2078 /* expect the "while" */
2079 if (parser->tok != TOKEN_KEYWORD ||
2080 strcmp(parser_tokval(parser), "while"))
2082 parseerror(parser, "expected 'while' and condition");
2087 /* skip the 'while' and check for opening paren */
2088 if (!parser_next(parser) || parser->tok != '(') {
2089 parseerror(parser, "expected 'while' condition in parenthesis");
2093 /* parse into the expression */
2094 if (!parser_next(parser)) {
2095 parseerror(parser, "expected 'while' condition after opening paren");
2099 /* parse the condition */
2100 cond = parse_expression_leave(parser, false);
2104 if (parser->tok != ')') {
2105 parseerror(parser, "expected closing paren after 'while' condition");
2111 if (!parser_next(parser) || parser->tok != ';') {
2112 parseerror(parser, "expected semicolon after condition");
2118 if (!parser_next(parser)) {
2119 parseerror(parser, "parse error");
2125 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
2126 *out = (ast_expression*)aloop;
2130 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2133 ast_expression *initexpr, *cond, *increment, *ontrue;
2137 lex_ctx ctx = parser_ctx(parser);
2139 parser_enterblock(parser);
2146 /* skip the 'while' and check for opening paren */
2147 if (!parser_next(parser) || parser->tok != '(') {
2148 parseerror(parser, "expected 'for' expressions in parenthesis");
2151 /* parse into the expression */
2152 if (!parser_next(parser)) {
2153 parseerror(parser, "expected 'for' initializer after opening paren");
2158 if (parser->tok == TOKEN_IDENT)
2159 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2161 if (typevar || parser->tok == TOKEN_TYPENAME) {
2162 if (opts.standard != COMPILER_GMQCC) {
2163 if (parsewarning(parser, WARN_EXTENSIONS,
2164 "current standard does not allow variable declarations in for-loop initializers"))
2167 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false))
2170 else if (parser->tok != ';')
2172 initexpr = parse_expression_leave(parser, false);
2177 /* move on to condition */
2178 if (parser->tok != ';') {
2179 parseerror(parser, "expected semicolon after for-loop initializer");
2182 if (!parser_next(parser)) {
2183 parseerror(parser, "expected for-loop condition");
2187 /* parse the condition */
2188 if (parser->tok != ';') {
2189 cond = parse_expression_leave(parser, false);
2194 /* move on to incrementor */
2195 if (parser->tok != ';') {
2196 parseerror(parser, "expected semicolon after for-loop initializer");
2199 if (!parser_next(parser)) {
2200 parseerror(parser, "expected for-loop condition");
2204 /* parse the incrementor */
2205 if (parser->tok != ')') {
2206 increment = parse_expression_leave(parser, false);
2209 if (!ast_side_effects(increment)) {
2210 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2216 if (parser->tok != ')') {
2217 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2220 /* parse into the 'then' branch */
2221 if (!parser_next(parser)) {
2222 parseerror(parser, "expected for-loop body");
2225 if (!parse_statement_or_block(parser, &ontrue))
2228 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
2229 *out = (ast_expression*)aloop;
2231 if (!parser_leaveblock(parser))
2235 if (initexpr) ast_delete(initexpr);
2236 if (cond) ast_delete(cond);
2237 if (increment) ast_delete(increment);
2238 (void)!parser_leaveblock(parser);
2242 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2244 ast_expression *exp = NULL;
2245 ast_return *ret = NULL;
2246 ast_value *expected = parser->function->vtype;
2248 lex_ctx ctx = parser_ctx(parser);
2250 (void)block; /* not touching */
2252 if (!parser_next(parser)) {
2253 parseerror(parser, "expected return expression");
2257 if (parser->tok != ';') {
2258 exp = parse_expression(parser, false);
2262 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2263 parseerror(parser, "return with invalid expression");
2266 ret = ast_return_new(ctx, exp);
2272 if (!parser_next(parser))
2273 parseerror(parser, "parse error");
2274 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2275 if (opts.standard != COMPILER_GMQCC)
2276 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2278 parseerror(parser, "return without value");
2280 ret = ast_return_new(ctx, NULL);
2282 *out = (ast_expression*)ret;
2286 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2288 lex_ctx ctx = parser_ctx(parser);
2290 (void)block; /* not touching */
2292 if (!parser_next(parser) || parser->tok != ';') {
2293 parseerror(parser, "expected semicolon");
2297 if (!parser_next(parser))
2298 parseerror(parser, "parse error");
2300 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
2304 /* returns true when it was a variable qualifier, false otherwise!
2305 * on error, cvq is set to CV_WRONG
2307 static bool parse_var_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *noreturn)
2309 bool had_const = false;
2310 bool had_var = false;
2311 bool had_noref = false;
2312 bool had_noreturn = false;
2315 if (!strcmp(parser_tokval(parser), "const"))
2317 else if (!strcmp(parser_tokval(parser), "var"))
2319 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2321 else if (!strcmp(parser_tokval(parser), "noref"))
2323 else if (!strcmp(parser_tokval(parser), "noreturn"))
2324 had_noreturn = true;
2325 else if (!had_const && !had_var && !had_noref && !had_noreturn) {
2330 if (!parser_next(parser))
2340 *noreturn = had_noreturn;
2343 parseerror(parser, "parse error after variable qualifier");
2348 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2350 ast_expression *operand;
2353 ast_switch *switchnode;
2354 ast_switch_case swcase;
2357 bool noref, noreturn;
2359 lex_ctx ctx = parser_ctx(parser);
2361 (void)block; /* not touching */
2364 /* parse over the opening paren */
2365 if (!parser_next(parser) || parser->tok != '(') {
2366 parseerror(parser, "expected switch operand in parenthesis");
2370 /* parse into the expression */
2371 if (!parser_next(parser)) {
2372 parseerror(parser, "expected switch operand");
2375 /* parse the operand */
2376 operand = parse_expression_leave(parser, false);
2380 switchnode = ast_switch_new(ctx, operand);
2383 if (parser->tok != ')') {
2384 ast_delete(switchnode);
2385 parseerror(parser, "expected closing paren after 'switch' operand");
2389 /* parse over the opening paren */
2390 if (!parser_next(parser) || parser->tok != '{') {
2391 ast_delete(switchnode);
2392 parseerror(parser, "expected list of cases");
2396 if (!parser_next(parser)) {
2397 ast_delete(switchnode);
2398 parseerror(parser, "expected 'case' or 'default'");
2402 /* new block; allow some variables to be declared here */
2403 parser_enterblock(parser);
2406 if (parser->tok == TOKEN_IDENT)
2407 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2408 if (typevar || parser->tok == TOKEN_TYPENAME) {
2409 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false)) {
2410 ast_delete(switchnode);
2415 if (parse_var_qualifiers(parser, true, &cvq, &noref, &noreturn))
2417 if (cvq == CV_WRONG) {
2418 ast_delete(switchnode);
2421 if (!parse_variable(parser, block, false, cvq, NULL, noref, noreturn)) {
2422 ast_delete(switchnode);
2431 while (parser->tok != '}') {
2432 ast_block *caseblock;
2434 if (parser->tok != TOKEN_KEYWORD) {
2435 ast_delete(switchnode);
2436 parseerror(parser, "expected 'case' or 'default'");
2439 if (!strcmp(parser_tokval(parser), "case")) {
2440 if (!parser_next(parser)) {
2441 ast_delete(switchnode);
2442 parseerror(parser, "expected expression for case");
2445 swcase.value = parse_expression_leave(parser, false);
2446 if (!swcase.value) {
2447 ast_delete(switchnode);
2448 parseerror(parser, "expected expression for case");
2451 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2452 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
2453 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2459 else if (!strcmp(parser_tokval(parser), "default")) {
2460 swcase.value = NULL;
2461 if (!parser_next(parser)) {
2462 ast_delete(switchnode);
2463 parseerror(parser, "expected colon");
2468 /* Now the colon and body */
2469 if (parser->tok != ':') {
2470 if (swcase.value) ast_unref(swcase.value);
2471 ast_delete(switchnode);
2472 parseerror(parser, "expected colon");
2476 if (!parser_next(parser)) {
2477 if (swcase.value) ast_unref(swcase.value);
2478 ast_delete(switchnode);
2479 parseerror(parser, "expected statements or case");
2482 caseblock = ast_block_new(parser_ctx(parser));
2484 if (swcase.value) ast_unref(swcase.value);
2485 ast_delete(switchnode);
2488 swcase.code = (ast_expression*)caseblock;
2489 vec_push(switchnode->cases, swcase);
2491 ast_expression *expr;
2492 if (parser->tok == '}')
2494 if (parser->tok == TOKEN_KEYWORD) {
2495 if (!strcmp(parser_tokval(parser), "case") ||
2496 !strcmp(parser_tokval(parser), "default"))
2501 if (!parse_statement(parser, caseblock, &expr, true)) {
2502 ast_delete(switchnode);
2507 if (!ast_block_add_expr(caseblock, expr)) {
2508 ast_delete(switchnode);
2514 parser_leaveblock(parser);
2517 if (parser->tok != '}') {
2518 ast_delete(switchnode);
2519 parseerror(parser, "expected closing paren of case list");
2522 if (!parser_next(parser)) {
2523 ast_delete(switchnode);
2524 parseerror(parser, "parse error after switch");
2527 *out = (ast_expression*)switchnode;
2531 static bool parse_goto(parser_t *parser, ast_expression **out)
2536 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2537 parseerror(parser, "expected label name after `goto`");
2541 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
2543 for (i = 0; i < vec_size(parser->labels); ++i) {
2544 if (!strcmp(parser->labels[i]->name, parser_tokval(parser))) {
2545 ast_goto_set_label(gt, parser->labels[i]);
2549 if (i == vec_size(parser->labels))
2550 vec_push(parser->gotos, gt);
2552 if (!parser_next(parser) || parser->tok != ';') {
2553 parseerror(parser, "semicolon expected after goto label");
2556 if (!parser_next(parser)) {
2557 parseerror(parser, "parse error after goto");
2561 *out = (ast_expression*)gt;
2565 static bool parse_skipwhite(parser_t *parser)
2568 if (!parser_next(parser))
2570 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
2571 return parser->tok < TOKEN_ERROR;
2574 static bool parse_eol(parser_t *parser)
2576 if (!parse_skipwhite(parser))
2578 return parser->tok == TOKEN_EOL;
2581 static bool parse_pragma_do(parser_t *parser)
2583 if (!parser_next(parser) ||
2584 parser->tok != TOKEN_IDENT ||
2585 strcmp(parser_tokval(parser), "pragma"))
2587 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
2590 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
2591 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
2595 if (!strcmp(parser_tokval(parser), "noref")) {
2596 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
2597 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
2600 parser->noref = !!parser_token(parser)->constval.i;
2601 if (!parse_eol(parser)) {
2602 parseerror(parser, "parse error after `noref` pragma");
2608 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
2615 static bool parse_pragma(parser_t *parser)
2618 parser->lex->flags.preprocessing = true;
2619 parser->lex->flags.mergelines = true;
2620 rv = parse_pragma_do(parser);
2621 if (parser->tok != TOKEN_EOL) {
2622 parseerror(parser, "junk after pragma");
2625 parser->lex->flags.preprocessing = false;
2626 parser->lex->flags.mergelines = false;
2627 if (!parser_next(parser)) {
2628 parseerror(parser, "parse error after pragma");
2634 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2636 bool noref, noreturn;
2638 ast_value *typevar = NULL;
2642 if (parser->tok == TOKEN_IDENT)
2643 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2645 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2647 /* local variable */
2649 parseerror(parser, "cannot declare a variable from here");
2652 if (opts.standard == COMPILER_QCC) {
2653 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2656 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false))
2660 else if (parse_var_qualifiers(parser, !!block, &cvq, &noref, &noreturn))
2662 if (cvq == CV_WRONG)
2664 return parse_variable(parser, block, true, cvq, NULL, noref, noreturn);
2666 else if (parser->tok == TOKEN_KEYWORD)
2668 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
2673 if (!parser_next(parser)) {
2674 parseerror(parser, "parse error after __builtin_debug_printtype");
2678 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
2680 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
2681 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
2682 if (!parser_next(parser)) {
2683 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
2689 if (!parse_statement(parser, block, out, allow_cases))
2692 con_out("__builtin_debug_printtype: got no output node\n");
2695 ast_type_to_string(*out, ty, sizeof(ty));
2696 con_out("__builtin_debug_printtype: `%s`\n", ty);
2701 else if (!strcmp(parser_tokval(parser), "return"))
2703 return parse_return(parser, block, out);
2705 else if (!strcmp(parser_tokval(parser), "if"))
2707 return parse_if(parser, block, out);
2709 else if (!strcmp(parser_tokval(parser), "while"))
2711 return parse_while(parser, block, out);
2713 else if (!strcmp(parser_tokval(parser), "do"))
2715 return parse_dowhile(parser, block, out);
2717 else if (!strcmp(parser_tokval(parser), "for"))
2719 if (opts.standard == COMPILER_QCC) {
2720 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2723 return parse_for(parser, block, out);
2725 else if (!strcmp(parser_tokval(parser), "break"))
2727 return parse_break_continue(parser, block, out, false);
2729 else if (!strcmp(parser_tokval(parser), "continue"))
2731 return parse_break_continue(parser, block, out, true);
2733 else if (!strcmp(parser_tokval(parser), "switch"))
2735 return parse_switch(parser, block, out);
2737 else if (!strcmp(parser_tokval(parser), "case") ||
2738 !strcmp(parser_tokval(parser), "default"))
2741 parseerror(parser, "unexpected 'case' label");
2746 else if (!strcmp(parser_tokval(parser), "goto"))
2748 return parse_goto(parser, out);
2750 else if (!strcmp(parser_tokval(parser), "typedef"))
2752 if (!parser_next(parser)) {
2753 parseerror(parser, "expected type definition after 'typedef'");
2756 return parse_typedef(parser);
2758 parseerror(parser, "Unexpected keyword");
2761 else if (parser->tok == '{')
2764 inner = parse_block(parser);
2767 *out = (ast_expression*)inner;
2770 else if (parser->tok == ':')
2774 if (!parser_next(parser)) {
2775 parseerror(parser, "expected label name");
2778 if (parser->tok != TOKEN_IDENT) {
2779 parseerror(parser, "label must be an identifier");
2782 label = ast_label_new(parser_ctx(parser), parser_tokval(parser));
2785 vec_push(parser->labels, label);
2786 *out = (ast_expression*)label;
2787 if (!parser_next(parser)) {
2788 parseerror(parser, "parse error after label");
2791 for (i = 0; i < vec_size(parser->gotos); ++i) {
2792 if (!strcmp(parser->gotos[i]->name, label->name)) {
2793 ast_goto_set_label(parser->gotos[i], label);
2794 vec_remove(parser->gotos, i, 1);
2800 else if (parser->tok == ';')
2802 if (!parser_next(parser)) {
2803 parseerror(parser, "parse error after empty statement");
2810 ast_expression *exp = parse_expression(parser, false);
2814 if (!ast_side_effects(exp)) {
2815 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2822 static bool parse_block_into(parser_t *parser, ast_block *block)
2826 parser_enterblock(parser);
2828 if (!parser_next(parser)) { /* skip the '{' */
2829 parseerror(parser, "expected function body");
2833 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2835 ast_expression *expr = NULL;
2836 if (parser->tok == '}')
2839 if (!parse_statement(parser, block, &expr, false)) {
2840 /* parseerror(parser, "parse error"); */
2846 if (!ast_block_add_expr(block, expr)) {
2853 if (parser->tok != '}') {
2856 (void)parser_next(parser);
2860 if (!parser_leaveblock(parser))
2862 return retval && !!block;
2865 static ast_block* parse_block(parser_t *parser)
2868 block = ast_block_new(parser_ctx(parser));
2871 if (!parse_block_into(parser, block)) {
2872 ast_block_delete(block);
2878 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
2880 if (parser->tok == '{') {
2881 *out = (ast_expression*)parse_block(parser);
2884 return parse_statement(parser, NULL, out, false);
2887 static bool create_vector_members(ast_value *var, ast_member **me)
2890 size_t len = strlen(var->name);
2892 for (i = 0; i < 3; ++i) {
2893 char *name = mem_a(len+3);
2894 memcpy(name, var->name, len);
2896 name[len+1] = 'x'+i;
2898 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
2907 do { ast_member_delete(me[--i]); } while(i);
2911 static bool parse_function_body(parser_t *parser, ast_value *var)
2913 ast_block *block = NULL;
2918 ast_expression *framenum = NULL;
2919 ast_expression *nextthink = NULL;
2920 /* None of the following have to be deleted */
2921 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2922 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2923 bool has_frame_think;
2927 has_frame_think = false;
2928 old = parser->function;
2930 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
2931 parseerror(parser, "gotos/labels leaking");
2935 if (var->expression.flags & AST_FLAG_VARIADIC) {
2936 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2937 "variadic function with implementation will not be able to access additional parameters"))
2943 if (parser->tok == '[') {
2944 /* got a frame definition: [ framenum, nextthink ]
2945 * this translates to:
2946 * self.frame = framenum;
2947 * self.nextthink = time + 0.1;
2948 * self.think = nextthink;
2952 fld_think = parser_find_field(parser, "think");
2953 fld_nextthink = parser_find_field(parser, "nextthink");
2954 fld_frame = parser_find_field(parser, "frame");
2955 if (!fld_think || !fld_nextthink || !fld_frame) {
2956 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2957 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2960 gbl_time = parser_find_global(parser, "time");
2961 gbl_self = parser_find_global(parser, "self");
2962 if (!gbl_time || !gbl_self) {
2963 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2964 parseerror(parser, "please declare the following globals: `time`, `self`");
2968 if (!parser_next(parser))
2971 framenum = parse_expression_leave(parser, true);
2973 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2976 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
2977 ast_unref(framenum);
2978 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2982 if (parser->tok != ',') {
2983 ast_unref(framenum);
2984 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2985 parseerror(parser, "Got a %i\n", parser->tok);
2989 if (!parser_next(parser)) {
2990 ast_unref(framenum);
2994 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2996 /* qc allows the use of not-yet-declared functions here
2997 * - this automatically creates a prototype */
2998 ast_value *thinkfunc;
2999 ast_expression *functype = fld_think->expression.next;
3001 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3002 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3003 ast_unref(framenum);
3004 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3008 if (!parser_next(parser)) {
3009 ast_unref(framenum);
3010 ast_delete(thinkfunc);
3014 vec_push(parser->globals, (ast_expression*)thinkfunc);
3015 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
3016 nextthink = (ast_expression*)thinkfunc;
3019 nextthink = parse_expression_leave(parser, true);
3021 ast_unref(framenum);
3022 parseerror(parser, "expected a think-function in [frame,think] notation");
3027 if (!ast_istype(nextthink, ast_value)) {
3028 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3032 if (retval && parser->tok != ']') {
3033 parseerror(parser, "expected closing `]` for [frame,think] notation");
3037 if (retval && !parser_next(parser)) {
3041 if (retval && parser->tok != '{') {
3042 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3047 ast_unref(nextthink);
3048 ast_unref(framenum);
3052 has_frame_think = true;
3055 block = ast_block_new(parser_ctx(parser));
3057 parseerror(parser, "failed to allocate block");
3058 if (has_frame_think) {
3059 ast_unref(nextthink);
3060 ast_unref(framenum);
3065 if (has_frame_think) {
3067 ast_expression *self_frame;
3068 ast_expression *self_nextthink;
3069 ast_expression *self_think;
3070 ast_expression *time_plus_1;
3071 ast_store *store_frame;
3072 ast_store *store_nextthink;
3073 ast_store *store_think;
3075 ctx = parser_ctx(parser);
3076 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3077 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3078 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3080 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3081 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3083 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3084 if (self_frame) ast_delete(self_frame);
3085 if (self_nextthink) ast_delete(self_nextthink);
3086 if (self_think) ast_delete(self_think);
3087 if (time_plus_1) ast_delete(time_plus_1);
3093 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3094 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3095 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3098 ast_delete(self_frame);
3101 if (!store_nextthink) {
3102 ast_delete(self_nextthink);
3106 ast_delete(self_think);
3110 if (store_frame) ast_delete(store_frame);
3111 if (store_nextthink) ast_delete(store_nextthink);
3112 if (store_think) ast_delete(store_think);
3115 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3116 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3117 !ast_block_add_expr(block, (ast_expression*)store_think))
3124 parseerror(parser, "failed to generate code for [frame,think]");
3125 ast_unref(nextthink);
3126 ast_unref(framenum);
3132 parser_enterblock(parser);
3134 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3136 ast_value *param = var->expression.params[parami];
3139 if (param->expression.vtype != TYPE_VECTOR &&
3140 (param->expression.vtype != TYPE_FIELD ||
3141 param->expression.next->expression.vtype != TYPE_VECTOR))
3146 if (!create_vector_members(param, me)) {
3147 ast_block_delete(block);
3151 for (e = 0; e < 3; ++e) {
3152 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3153 ast_block_collect(block, (ast_expression*)me[e]);
3157 func = ast_function_new(ast_ctx(var), var->name, var);
3159 parseerror(parser, "failed to allocate function for `%s`", var->name);
3160 ast_block_delete(block);
3163 vec_push(parser->functions, func);
3165 parser->function = func;
3166 if (!parse_block_into(parser, block)) {
3167 ast_block_delete(block);
3171 vec_push(func->blocks, block);
3173 parser->function = old;
3174 if (!parser_leaveblock(parser))
3176 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3177 parseerror(parser, "internal error: local scopes left");
3181 if (parser->tok == ';')
3182 return parser_next(parser);
3183 else if (opts.standard == COMPILER_QCC)
3184 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3188 vec_pop(parser->functions);
3189 ast_function_delete(func);
3190 var->constval.vfunc = NULL;
3193 (void)!parser_leaveblock(parser);
3194 parser->function = old;
3198 static ast_expression *array_accessor_split(
3203 ast_expression *left,
3204 ast_expression *right
3210 lex_ctx ctx = ast_ctx(array);
3212 if (!left || !right) {
3213 if (left) ast_delete(left);
3214 if (right) ast_delete(right);
3218 cmp = ast_binary_new(ctx, INSTR_LT,
3219 (ast_expression*)index,
3220 (ast_expression*)parser_const_float(parser, middle));
3224 parseerror(parser, "internal error: failed to create comparison for array setter");
3228 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3230 ast_delete(cmp); /* will delete left and right */
3231 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3235 return (ast_expression*)ifthen;
3238 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3240 lex_ctx ctx = ast_ctx(array);
3242 if (from+1 == afterend) {
3243 /* set this value */
3246 ast_array_index *subscript;
3248 int assignop = type_store_instr[value->expression.vtype];
3250 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3251 assignop = INSTR_STORE_V;
3253 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3257 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3259 ast_delete(subscript);
3263 block = ast_block_new(ctx);
3269 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3274 ret = ast_return_new(ctx, NULL);
3280 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3285 return (ast_expression*)block;
3287 ast_expression *left, *right;
3288 size_t diff = afterend - from;
3289 size_t middle = from + diff/2;
3290 left = array_setter_node(parser, array, index, value, from, middle);
3291 right = array_setter_node(parser, array, index, value, middle, afterend);
3292 return array_accessor_split(parser, array, index, middle, left, right);
3296 static ast_expression *array_field_setter_node(
3305 lex_ctx ctx = ast_ctx(array);
3307 if (from+1 == afterend) {
3308 /* set this value */
3311 ast_entfield *entfield;
3312 ast_array_index *subscript;
3314 int assignop = type_storep_instr[value->expression.vtype];
3316 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3317 assignop = INSTR_STOREP_V;
3319 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3323 entfield = ast_entfield_new_force(ctx,
3324 (ast_expression*)entity,
3325 (ast_expression*)subscript,
3326 (ast_expression*)subscript);
3328 ast_delete(subscript);
3332 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3334 ast_delete(entfield);
3338 block = ast_block_new(ctx);
3344 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3349 ret = ast_return_new(ctx, NULL);
3355 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3360 return (ast_expression*)block;
3362 ast_expression *left, *right;
3363 size_t diff = afterend - from;
3364 size_t middle = from + diff/2;
3365 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3366 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3367 return array_accessor_split(parser, array, index, middle, left, right);
3371 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3373 lex_ctx ctx = ast_ctx(array);
3375 if (from+1 == afterend) {
3377 ast_array_index *subscript;
3379 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3383 ret = ast_return_new(ctx, (ast_expression*)subscript);
3385 ast_delete(subscript);
3389 return (ast_expression*)ret;
3391 ast_expression *left, *right;
3392 size_t diff = afterend - from;
3393 size_t middle = from + diff/2;
3394 left = array_getter_node(parser, array, index, from, middle);
3395 right = array_getter_node(parser, array, index, middle, afterend);
3396 return array_accessor_split(parser, array, index, middle, left, right);
3400 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3402 ast_function *func = NULL;
3403 ast_value *fval = NULL;
3404 ast_block *body = NULL;
3406 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3408 parseerror(parser, "failed to create accessor function value");
3412 func = ast_function_new(ast_ctx(array), funcname, fval);
3415 parseerror(parser, "failed to create accessor function node");
3419 body = ast_block_new(ast_ctx(array));
3421 parseerror(parser, "failed to create block for array accessor");
3427 vec_push(func->blocks, body);
3430 vec_push(parser->accessors, fval);
3435 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
3437 ast_expression *root = NULL;
3438 ast_value *index = NULL;
3439 ast_value *value = NULL;
3443 if (!ast_istype(array->expression.next, ast_value)) {
3444 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3448 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3450 func = fval->constval.vfunc;
3451 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3453 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3454 value = ast_value_copy((ast_value*)array->expression.next);
3456 if (!index || !value) {
3457 parseerror(parser, "failed to create locals for array accessor");
3460 (void)!ast_value_set_name(value, "value"); /* not important */
3461 vec_push(fval->expression.params, index);
3462 vec_push(fval->expression.params, value);
3464 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
3466 parseerror(parser, "failed to build accessor search tree");
3470 array->setter = fval;
3471 return ast_block_add_expr(func->blocks[0], root);
3473 if (index) ast_delete(index);
3474 if (value) ast_delete(value);
3475 if (root) ast_delete(root);
3481 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
3483 ast_expression *root = NULL;
3484 ast_value *entity = NULL;
3485 ast_value *index = NULL;
3486 ast_value *value = NULL;
3490 if (!ast_istype(array->expression.next, ast_value)) {
3491 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3495 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3497 func = fval->constval.vfunc;
3498 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3500 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
3501 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3502 value = ast_value_copy((ast_value*)array->expression.next);
3503 if (!entity || !index || !value) {
3504 parseerror(parser, "failed to create locals for array accessor");
3507 (void)!ast_value_set_name(value, "value"); /* not important */
3508 vec_push(fval->expression.params, entity);
3509 vec_push(fval->expression.params, index);
3510 vec_push(fval->expression.params, value);
3512 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3514 parseerror(parser, "failed to build accessor search tree");
3518 array->setter = fval;
3519 return ast_block_add_expr(func->blocks[0], root);
3521 if (entity) ast_delete(entity);
3522 if (index) ast_delete(index);
3523 if (value) ast_delete(value);
3524 if (root) ast_delete(root);
3530 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3532 ast_expression *root = NULL;
3533 ast_value *index = NULL;
3537 /* NOTE: checking array->expression.next rather than elemtype since
3538 * for fields elemtype is a temporary fieldtype.
3540 if (!ast_istype(array->expression.next, ast_value)) {
3541 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3545 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3547 func = fval->constval.vfunc;
3548 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3550 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3553 parseerror(parser, "failed to create locals for array accessor");
3556 vec_push(fval->expression.params, index);
3558 root = array_getter_node(parser, array, index, 0, array->expression.count);
3560 parseerror(parser, "failed to build accessor search tree");
3564 array->getter = fval;
3565 return ast_block_add_expr(func->blocks[0], root);
3567 if (index) ast_delete(index);
3568 if (root) ast_delete(root);
3574 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3575 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3583 bool variadic = false;
3585 ctx = parser_ctx(parser);
3587 /* for the sake of less code we parse-in in this function */
3588 if (!parser_next(parser)) {
3589 parseerror(parser, "expected parameter list");
3595 /* parse variables until we hit a closing paren */
3596 while (parser->tok != ')') {
3598 /* there must be commas between them */
3599 if (parser->tok != ',') {
3600 parseerror(parser, "expected comma or end of parameter list");
3603 if (!parser_next(parser)) {
3604 parseerror(parser, "expected parameter");
3610 if (parser->tok == TOKEN_DOTS) {
3611 /* '...' indicates a varargs function */
3613 if (!parser_next(parser)) {
3614 parseerror(parser, "expected parameter");
3617 if (parser->tok != ')') {
3618 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3624 /* for anything else just parse a typename */
3625 param = parse_typename(parser, NULL, NULL);
3628 vec_push(params, param);
3629 if (param->expression.vtype >= TYPE_VARIANT) {
3630 char typename[1024];
3631 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
3632 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
3638 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
3642 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
3643 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3646 if (!parser_next(parser)) {
3647 parseerror(parser, "parse error after typename");
3651 /* now turn 'var' into a function type */
3652 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3653 fval->expression.next = (ast_expression*)var;
3655 fval->expression.flags |= AST_FLAG_VARIADIC;
3658 var->expression.params = params;
3665 for (i = 0; i < vec_size(params); ++i)
3666 ast_delete(params[i]);
3671 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3673 ast_expression *cexp;
3674 ast_value *cval, *tmp;
3677 ctx = parser_ctx(parser);
3679 if (!parser_next(parser)) {
3681 parseerror(parser, "expected array-size");
3685 cexp = parse_expression_leave(parser, true);
3687 if (!cexp || !ast_istype(cexp, ast_value)) {
3691 parseerror(parser, "expected array-size as constant positive integer");
3694 cval = (ast_value*)cexp;
3696 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3697 tmp->expression.next = (ast_expression*)var;
3700 if (cval->expression.vtype == TYPE_INTEGER)
3701 tmp->expression.count = cval->constval.vint;
3702 else if (cval->expression.vtype == TYPE_FLOAT)
3703 tmp->expression.count = cval->constval.vfloat;
3707 parseerror(parser, "array-size must be a positive integer constant");
3712 if (parser->tok != ']') {
3714 parseerror(parser, "expected ']' after array-size");
3717 if (!parser_next(parser)) {
3719 parseerror(parser, "error after parsing array size");
3725 /* Parse a complete typename.
3726 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3727 * but when parsing variables separated by comma
3728 * 'storebase' should point to where the base-type should be kept.
3729 * The base type makes up every bit of type information which comes *before* the
3732 * The following will be parsed in its entirety:
3734 * The 'basetype' in this case is 'void()'
3735 * and if there's a comma after it, say:
3737 * then the type-information 'void()' can be stored in 'storebase'
3739 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3741 ast_value *var, *tmp;
3744 const char *name = NULL;
3745 bool isfield = false;
3746 bool wasarray = false;
3747 size_t morefields = 0;
3749 ctx = parser_ctx(parser);
3751 /* types may start with a dot */
3752 if (parser->tok == '.') {
3754 /* if we parsed a dot we need a typename now */
3755 if (!parser_next(parser)) {
3756 parseerror(parser, "expected typename for field definition");
3760 /* Further dots are handled seperately because they won't be part of the
3763 while (parser->tok == '.') {
3765 if (!parser_next(parser)) {
3766 parseerror(parser, "expected typename for field definition");
3771 if (parser->tok == TOKEN_IDENT)
3772 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
3773 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
3774 parseerror(parser, "expected typename");
3778 /* generate the basic type value */
3779 if (cached_typedef) {
3780 var = ast_value_copy(cached_typedef);
3781 ast_value_set_name(var, "<type(from_def)>");
3783 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3785 for (; morefields; --morefields) {
3786 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
3787 tmp->expression.next = (ast_expression*)var;
3791 /* do not yet turn into a field - remember:
3792 * .void() foo; is a field too
3793 * .void()() foo; is a function
3797 if (!parser_next(parser)) {
3799 parseerror(parser, "parse error after typename");
3803 /* an opening paren now starts the parameter-list of a function
3804 * this is where original-QC has parameter lists.
3805 * We allow a single parameter list here.
3806 * Much like fteqcc we don't allow `float()() x`
3808 if (parser->tok == '(') {
3809 var = parse_parameter_list(parser, var);
3814 /* store the base if requested */
3816 *storebase = ast_value_copy(var);
3818 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3819 tmp->expression.next = (ast_expression*)*storebase;
3824 /* there may be a name now */
3825 if (parser->tok == TOKEN_IDENT) {
3826 name = util_strdup(parser_tokval(parser));
3828 if (!parser_next(parser)) {
3830 parseerror(parser, "error after variable or field declaration");
3835 /* now this may be an array */
3836 if (parser->tok == '[') {
3838 var = parse_arraysize(parser, var);
3843 /* This is the point where we can turn it into a field */
3845 /* turn it into a field if desired */
3846 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3847 tmp->expression.next = (ast_expression*)var;
3851 /* now there may be function parens again */
3852 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
3853 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3854 if (parser->tok == '(' && wasarray)
3855 parseerror(parser, "arrays as part of a return type is not supported");
3856 while (parser->tok == '(') {
3857 var = parse_parameter_list(parser, var);
3866 /* finally name it */
3868 if (!ast_value_set_name(var, name)) {
3870 parseerror(parser, "internal error: failed to set name");
3873 /* free the name, ast_value_set_name duplicates */
3880 static bool parse_typedef(parser_t *parser)
3882 ast_value *typevar, *oldtype;
3883 ast_expression *old;
3885 typevar = parse_typename(parser, NULL, NULL);
3890 if ( (old = parser_find_var(parser, typevar->name)) ) {
3891 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
3892 " -> `%s` has been declared here: %s:%i",
3893 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
3894 ast_delete(typevar);
3898 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
3899 parseerror(parser, "type `%s` has already been declared here: %s:%i",
3900 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
3901 ast_delete(typevar);
3905 vec_push(parser->_typedefs, typevar);
3906 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
3908 if (parser->tok != ';') {
3909 parseerror(parser, "expected semicolon after typedef");
3912 if (!parser_next(parser)) {
3913 parseerror(parser, "parse error after typedef");
3920 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn)
3924 ast_expression *old;
3928 ast_value *basetype = NULL;
3930 bool isparam = false;
3931 bool isvector = false;
3932 bool cleanvar = true;
3933 bool wasarray = false;
3937 /* get the first complete variable */
3938 var = parse_typename(parser, &basetype, cached_typedef);
3941 ast_delete(basetype);
3949 /* Part 0: finish the type */
3950 if (parser->tok == '(') {
3951 if (opts.standard == COMPILER_QCC)
3952 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3953 var = parse_parameter_list(parser, var);
3959 /* we only allow 1-dimensional arrays */
3960 if (parser->tok == '[') {
3962 var = parse_arraysize(parser, var);
3968 if (parser->tok == '(' && wasarray) {
3969 parseerror(parser, "arrays as part of a return type is not supported");
3970 /* we'll still parse the type completely for now */
3972 /* for functions returning functions */
3973 while (parser->tok == '(') {
3974 if (opts.standard == COMPILER_QCC)
3975 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3976 var = parse_parameter_list(parser, var);
3983 var->cvq = qualifier;
3984 /* in a noref section we simply bump the usecount */
3985 if (noref || parser->noref)
3988 var->expression.flags |= AST_FLAG_NORETURN;
3991 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3992 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3993 * is then filled with the previous definition and the parameter-names replaced.
3996 /* Deal with end_sys_ vars */
3998 if (!strcmp(var->name, "end_sys_globals")) {
4000 parser->crc_globals = vec_size(parser->globals);
4003 else if (!strcmp(var->name, "end_sys_fields")) {
4005 parser->crc_fields = vec_size(parser->fields);
4008 if (was_end && var->expression.vtype == TYPE_FIELD) {
4009 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4010 "global '%s' hint should not be a field",
4011 parser_tokval(parser)))
4018 if (!nofields && var->expression.vtype == TYPE_FIELD)
4020 /* deal with field declarations */
4021 old = parser_find_field(parser, var->name);
4023 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4024 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
4033 parseerror(parser, "field `%s` already declared here: %s:%i",
4034 var->name, ast_ctx(old).file, ast_ctx(old).line);
4039 if (opts.standard == COMPILER_QCC &&
4040 (old = parser_find_global(parser, var->name)))
4042 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4043 parseerror(parser, "field `%s` already declared here: %s:%i",
4044 var->name, ast_ctx(old).file, ast_ctx(old).line);
4051 /* deal with other globals */
4052 old = parser_find_global(parser, var->name);
4053 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
4055 /* This is a function which had a prototype */
4056 if (!ast_istype(old, ast_value)) {
4057 parseerror(parser, "internal error: prototype is not an ast_value");
4061 proto = (ast_value*)old;
4062 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
4063 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
4065 ast_ctx(proto).file, ast_ctx(proto).line);
4069 /* we need the new parameter-names */
4070 for (i = 0; i < vec_size(proto->expression.params); ++i)
4071 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4079 if (opts.standard == COMPILER_GMQCC) {
4080 parseerror(parser, "global `%s` already declared here: %s:%i",
4081 var->name, ast_ctx(old).file, ast_ctx(old).line);
4085 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4086 "global `%s` already declared here: %s:%i",
4087 var->name, ast_ctx(old).file, ast_ctx(old).line))
4092 proto = (ast_value*)old;
4093 if (!ast_istype(old, ast_value)) {
4094 parseerror(parser, "internal error: not an ast_value");
4103 if (opts.standard == COMPILER_QCC &&
4104 (old = parser_find_field(parser, var->name)))
4106 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4107 parseerror(parser, "global `%s` already declared here: %s:%i",
4108 var->name, ast_ctx(old).file, ast_ctx(old).line);
4115 else /* it's not a global */
4117 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4118 if (old && !isparam) {
4119 parseerror(parser, "local `%s` already declared here: %s:%i",
4120 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4124 old = parser_find_local(parser, var->name, 0, &isparam);
4125 if (old && isparam) {
4126 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4127 "local `%s` is shadowing a parameter", var->name))
4129 parseerror(parser, "local `%s` already declared here: %s:%i",
4130 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4134 if (opts.standard != COMPILER_GMQCC) {
4143 * Create the global/local, and deal with vector types.
4146 if (var->expression.vtype == TYPE_VECTOR)
4148 else if (var->expression.vtype == TYPE_FIELD &&
4149 var->expression.next->expression.vtype == TYPE_VECTOR)
4153 if (!create_vector_members(var, me)) {
4160 /* deal with global variables, fields, functions */
4161 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4162 var->isfield = true;
4163 vec_push(parser->fields, (ast_expression*)var);
4164 util_htset(parser->htfields, var->name, var);
4166 for (i = 0; i < 3; ++i) {
4167 vec_push(parser->fields, (ast_expression*)me[i]);
4168 util_htset(parser->htfields, me[i]->name, me[i]);
4173 vec_push(parser->globals, (ast_expression*)var);
4174 util_htset(parser->htglobals, var->name, var);
4176 for (i = 0; i < 3; ++i) {
4177 vec_push(parser->globals, (ast_expression*)me[i]);
4178 util_htset(parser->htglobals, me[i]->name, me[i]);
4183 vec_push(localblock->locals, var);
4184 parser_addlocal(parser, var->name, (ast_expression*)var);
4186 for (i = 0; i < 3; ++i) {
4187 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4188 ast_block_collect(localblock, (ast_expression*)me[i]);
4194 me[0] = me[1] = me[2] = NULL;
4199 if (var->expression.vtype == TYPE_ARRAY) {
4201 snprintf(name, sizeof(name), "%s##SET", var->name);
4202 if (!parser_create_array_setter(parser, var, name))
4204 snprintf(name, sizeof(name), "%s##GET", var->name);
4205 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4208 else if (!localblock && !nofields &&
4209 var->expression.vtype == TYPE_FIELD &&
4210 var->expression.next->expression.vtype == TYPE_ARRAY)
4213 ast_expression *telem;
4215 ast_value *array = (ast_value*)var->expression.next;
4217 if (!ast_istype(var->expression.next, ast_value)) {
4218 parseerror(parser, "internal error: field element type must be an ast_value");
4222 snprintf(name, sizeof(name), "%s##SETF", var->name);
4223 if (!parser_create_array_field_setter(parser, array, name))
4226 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4227 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4228 tfield->expression.next = telem;
4229 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4230 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4238 if (parser->tok == ';') {
4239 ast_delete(basetype);
4240 if (!parser_next(parser)) {
4241 parseerror(parser, "error after variable declaration");
4247 if (parser->tok == ',')
4251 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4254 parseerror(parser, "missing comma or semicolon while parsing variables");
4258 if (localblock && opts.standard == COMPILER_QCC) {
4259 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4260 "initializing expression turns variable `%s` into a constant in this standard",
4267 if (parser->tok != '{') {
4268 if (parser->tok != '=') {
4269 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4273 if (!parser_next(parser)) {
4274 parseerror(parser, "error parsing initializer");
4278 else if (opts.standard == COMPILER_QCC) {
4279 parseerror(parser, "expected '=' before function body in this standard");
4282 if (parser->tok == '#') {
4283 ast_function *func = NULL;
4286 parseerror(parser, "cannot declare builtins within functions");
4289 if (var->expression.vtype != TYPE_FUNCTION) {
4290 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4293 if (!parser_next(parser)) {
4294 parseerror(parser, "expected builtin number");
4297 if (parser->tok != TOKEN_INTCONST) {
4298 parseerror(parser, "builtin number must be an integer constant");
4301 if (parser_token(parser)->constval.i < 0) {
4302 parseerror(parser, "builtin number must be an integer greater than zero");
4306 if (var->hasvalue) {
4307 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
4308 "builtin `%s` has already been defined\n"
4309 " -> previous declaration here: %s:%i",
4310 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
4314 func = ast_function_new(ast_ctx(var), var->name, var);
4316 parseerror(parser, "failed to allocate function for `%s`", var->name);
4319 vec_push(parser->functions, func);
4321 func->builtin = -parser_token(parser)->constval.i-1;
4324 if (!parser_next(parser)) {
4325 parseerror(parser, "expected comma or semicolon");
4327 ast_function_delete(func);
4328 var->constval.vfunc = NULL;
4332 else if (parser->tok == '{' || parser->tok == '[')
4336 parseerror(parser, "cannot declare functions within functions");
4341 ast_ctx(proto) = parser_ctx(parser);
4343 if (!parse_function_body(parser, var))
4345 ast_delete(basetype);
4346 for (i = 0; i < vec_size(parser->gotos); ++i)
4347 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
4348 vec_free(parser->gotos);
4349 vec_free(parser->labels);
4352 ast_expression *cexp;
4355 cexp = parse_expression_leave(parser, true);
4360 cval = (ast_value*)cexp;
4361 if (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
4362 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
4365 if (opts.standard != COMPILER_GMQCC &&
4366 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4367 qualifier != CV_VAR)
4369 var->cvq = CV_CONST;
4371 var->hasvalue = true;
4372 if (cval->expression.vtype == TYPE_STRING)
4373 var->constval.vstring = parser_strdup(cval->constval.vstring);
4374 else if (cval->expression.vtype == TYPE_FIELD)
4375 var->constval.vfield = cval;
4377 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
4382 shunt sy = { NULL, NULL };
4385 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
4386 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
4387 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
4388 if (!parser_sy_apply_operator(parser, &sy))
4391 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
4392 parseerror(parser, "internal error: leaked operands");
4393 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
4403 if (parser->tok == ',') {
4404 if (!parser_next(parser)) {
4405 parseerror(parser, "expected another variable");
4409 if (parser->tok != TOKEN_IDENT) {
4410 parseerror(parser, "expected another variable");
4413 var = ast_value_copy(basetype);
4415 ast_value_set_name(var, parser_tokval(parser));
4416 if (!parser_next(parser)) {
4417 parseerror(parser, "error parsing variable declaration");
4423 if (parser->tok != ';') {
4424 parseerror(parser, "missing semicolon after variables");
4428 if (!parser_next(parser)) {
4429 parseerror(parser, "parse error after variable declaration");
4433 ast_delete(basetype);
4437 if (cleanvar && var)
4439 ast_delete(basetype);
4443 ast_delete(basetype);
4444 if (cleanvar && var)
4446 if (me[0]) ast_member_delete(me[0]);
4447 if (me[1]) ast_member_delete(me[1]);
4448 if (me[2]) ast_member_delete(me[2]);
4452 static bool parser_global_statement(parser_t *parser)
4456 bool noreturn = false;
4457 ast_value *istype = NULL;
4459 if (parser->tok == TOKEN_IDENT)
4460 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
4462 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
4464 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false);
4466 else if (parse_var_qualifiers(parser, false, &cvq, &noref, &noreturn))
4468 if (cvq == CV_WRONG)
4470 return parse_variable(parser, NULL, true, cvq, NULL, noref, noreturn);
4472 else if (parser->tok == TOKEN_KEYWORD)
4474 if (!strcmp(parser_tokval(parser), "typedef")) {
4475 if (!parser_next(parser)) {
4476 parseerror(parser, "expected type definition after 'typedef'");
4479 return parse_typedef(parser);
4481 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
4484 else if (parser->tok == '#')
4486 return parse_pragma(parser);
4488 else if (parser->tok == '$')
4490 if (!parser_next(parser)) {
4491 parseerror(parser, "parse error");
4497 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
4503 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
4505 return util_crc16(old, str, strlen(str));
4508 static void progdefs_crc_file(const char *str)
4510 /* write to progdefs.h here */
4514 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
4516 old = progdefs_crc_sum(old, str);
4517 progdefs_crc_file(str);
4521 static void generate_checksum(parser_t *parser)
4523 uint16_t crc = 0xFFFF;
4527 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
4528 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
4530 progdefs_crc_file("\tint\tpad;\n");
4531 progdefs_crc_file("\tint\tofs_return[3];\n");
4532 progdefs_crc_file("\tint\tofs_parm0[3];\n");
4533 progdefs_crc_file("\tint\tofs_parm1[3];\n");
4534 progdefs_crc_file("\tint\tofs_parm2[3];\n");
4535 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4536 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4537 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4538 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4539 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4541 for (i = 0; i < parser->crc_globals; ++i) {
4542 if (!ast_istype(parser->globals[i], ast_value))
4544 value = (ast_value*)(parser->globals[i]);
4545 switch (value->expression.vtype) {
4546 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4547 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4548 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4549 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4551 crc = progdefs_crc_both(crc, "\tint\t");
4554 crc = progdefs_crc_both(crc, value->name);
4555 crc = progdefs_crc_both(crc, ";\n");
4557 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4558 for (i = 0; i < parser->crc_fields; ++i) {
4559 if (!ast_istype(parser->fields[i], ast_value))
4561 value = (ast_value*)(parser->fields[i]);
4562 switch (value->expression.next->expression.vtype) {
4563 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4564 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4565 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4566 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4568 crc = progdefs_crc_both(crc, "\tint\t");
4571 crc = progdefs_crc_both(crc, value->name);
4572 crc = progdefs_crc_both(crc, ";\n");
4574 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4579 static parser_t *parser;
4585 parser = (parser_t*)mem_a(sizeof(parser_t));
4589 memset(parser, 0, sizeof(*parser));
4591 for (i = 0; i < operator_count; ++i) {
4592 if (operators[i].id == opid1('=')) {
4593 parser->assign_op = operators+i;
4597 if (!parser->assign_op) {
4598 printf("internal error: initializing parser: failed to find assign operator\n");
4603 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4604 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4605 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4606 vec_push(parser->_blocktypedefs, 0);
4610 bool parser_compile()
4612 /* initial lexer/parser state */
4613 parser->lex->flags.noops = true;
4615 if (parser_next(parser))
4617 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4619 if (!parser_global_statement(parser)) {
4620 if (parser->tok == TOKEN_EOF)
4621 parseerror(parser, "unexpected eof");
4622 else if (!parser->errors)
4623 parseerror(parser, "there have been errors, bailing out");
4624 lex_close(parser->lex);
4630 parseerror(parser, "parse error");
4631 lex_close(parser->lex);
4636 lex_close(parser->lex);
4639 return !parser->errors;
4642 bool parser_compile_file(const char *filename)
4644 parser->lex = lex_open(filename);
4646 con_err("failed to open file \"%s\"\n", filename);
4649 return parser_compile();
4652 bool parser_compile_string_len(const char *name, const char *str, size_t len)
4654 parser->lex = lex_open_string(str, len, name);
4656 con_err("failed to create lexer for string \"%s\"\n", name);
4659 return parser_compile();
4662 bool parser_compile_string(const char *name, const char *str)
4664 parser->lex = lex_open_string(str, strlen(str), name);
4666 con_err("failed to create lexer for string \"%s\"\n", name);
4669 return parser_compile();
4672 void parser_cleanup()
4675 for (i = 0; i < vec_size(parser->accessors); ++i) {
4676 ast_delete(parser->accessors[i]->constval.vfunc);
4677 parser->accessors[i]->constval.vfunc = NULL;
4678 ast_delete(parser->accessors[i]);
4680 for (i = 0; i < vec_size(parser->functions); ++i) {
4681 ast_delete(parser->functions[i]);
4683 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4684 ast_delete(parser->imm_vector[i]);
4686 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4687 ast_delete(parser->imm_string[i]);
4689 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4690 ast_delete(parser->imm_float[i]);
4692 for (i = 0; i < vec_size(parser->fields); ++i) {
4693 ast_delete(parser->fields[i]);
4695 for (i = 0; i < vec_size(parser->globals); ++i) {
4696 ast_delete(parser->globals[i]);
4698 vec_free(parser->accessors);
4699 vec_free(parser->functions);
4700 vec_free(parser->imm_vector);
4701 vec_free(parser->imm_string);
4702 vec_free(parser->imm_float);
4703 vec_free(parser->globals);
4704 vec_free(parser->fields);
4706 for (i = 0; i < vec_size(parser->variables); ++i)
4707 util_htdel(parser->variables[i]);
4708 vec_free(parser->variables);
4709 vec_free(parser->_blocklocals);
4710 vec_free(parser->_locals);
4712 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4713 ast_delete(parser->_typedefs[i]);
4714 vec_free(parser->_typedefs);
4715 for (i = 0; i < vec_size(parser->typedefs); ++i)
4716 util_htdel(parser->typedefs[i]);
4717 vec_free(parser->typedefs);
4718 vec_free(parser->_blocktypedefs);
4720 vec_free(parser->_block_ctx);
4722 vec_free(parser->labels);
4723 vec_free(parser->gotos);
4728 bool parser_finish(const char *output)
4734 if (!parser->errors)
4736 ir = ir_builder_new("gmqcc_out");
4738 con_out("failed to allocate builder\n");
4742 for (i = 0; i < vec_size(parser->fields); ++i) {
4745 if (!ast_istype(parser->fields[i], ast_value))
4747 field = (ast_value*)parser->fields[i];
4748 hasvalue = field->hasvalue;
4749 field->hasvalue = false;
4750 if (!ast_global_codegen((ast_value*)field, ir, true)) {
4751 con_out("failed to generate field %s\n", field->name);
4752 ir_builder_delete(ir);
4757 ast_expression *subtype;
4758 field->hasvalue = true;
4759 subtype = field->expression.next;
4760 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
4761 if (subtype->expression.vtype == TYPE_FIELD)
4762 ifld->fieldtype = subtype->expression.next->expression.vtype;
4763 else if (subtype->expression.vtype == TYPE_FUNCTION)
4764 ifld->outtype = subtype->expression.next->expression.vtype;
4765 (void)!ir_value_set_field(field->ir_v, ifld);
4768 for (i = 0; i < vec_size(parser->globals); ++i) {
4770 if (!ast_istype(parser->globals[i], ast_value))
4772 asvalue = (ast_value*)(parser->globals[i]);
4773 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
4774 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
4775 "unused global: `%s`", asvalue->name);
4777 if (!ast_global_codegen(asvalue, ir, false)) {
4778 con_out("failed to generate global %s\n", asvalue->name);
4779 ir_builder_delete(ir);
4783 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4784 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
4785 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
4786 ir_builder_delete(ir);
4790 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4791 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
4792 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
4793 ir_builder_delete(ir);
4797 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4798 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
4799 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
4800 ir_builder_delete(ir);
4804 for (i = 0; i < vec_size(parser->globals); ++i) {
4806 if (!ast_istype(parser->globals[i], ast_value))
4808 asvalue = (ast_value*)(parser->globals[i]);
4809 if (!ast_generate_accessors(asvalue, ir)) {
4810 ir_builder_delete(ir);
4814 for (i = 0; i < vec_size(parser->fields); ++i) {
4816 asvalue = (ast_value*)(parser->fields[i]->expression.next);
4818 if (!ast_istype((ast_expression*)asvalue, ast_value))
4820 if (asvalue->expression.vtype != TYPE_ARRAY)
4822 if (!ast_generate_accessors(asvalue, ir)) {
4823 ir_builder_delete(ir);
4827 for (i = 0; i < vec_size(parser->functions); ++i) {
4828 if (!ast_function_codegen(parser->functions[i], ir)) {
4829 con_out("failed to generate function %s\n", parser->functions[i]->name);
4830 ir_builder_delete(ir);
4835 ir_builder_dump(ir, con_out);
4836 for (i = 0; i < vec_size(parser->functions); ++i) {
4837 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4838 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4839 ir_builder_delete(ir);
4846 ir_builder_dump(ir, con_out);
4848 generate_checksum(parser);
4850 if (!ir_builder_generate(ir, output)) {
4851 con_out("*** failed to generate output file\n");
4852 ir_builder_delete(ir);
4857 ir_builder_delete(ir);
4861 con_out("*** there were compile errors\n");