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]);
907 out = (ast_expression*)ast_unary_new(ctx, NOT_F, out);
909 exprs[i] = out; out = NULL;
910 if (OPTS_FLAG(PERL_LOGIC)) {
915 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
920 if (vec_last(parser->pot) != POT_TERNARY2) {
921 parseerror(parser, "mismatched parenthesis/ternary");
924 vec_pop(parser->pot);
925 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
926 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
927 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
928 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
931 if (CanConstFold1(exprs[0]))
932 out = (ConstF(0) ? exprs[1] : exprs[2]);
934 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
938 generated_op += 1; /* INSTR_GT */
940 generated_op += 1; /* INSTR_LT */
941 case opid2('>', '='):
942 generated_op += 1; /* INSTR_GE */
943 case opid2('<', '='):
944 generated_op += INSTR_LE;
945 if (NotSameType(TYPE_FLOAT)) {
946 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
947 type_name[exprs[0]->expression.vtype],
948 type_name[exprs[1]->expression.vtype]);
951 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
953 case opid2('!', '='):
954 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
955 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
956 type_name[exprs[0]->expression.vtype],
957 type_name[exprs[1]->expression.vtype]);
960 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
962 case opid2('=', '='):
963 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
964 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
965 type_name[exprs[0]->expression.vtype],
966 type_name[exprs[1]->expression.vtype]);
969 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
973 if (ast_istype(exprs[0], ast_entfield)) {
974 ast_expression *field = ((ast_entfield*)exprs[0])->field;
975 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
976 exprs[0]->expression.vtype == TYPE_FIELD &&
977 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
979 assignop = type_storep_instr[TYPE_VECTOR];
982 assignop = type_storep_instr[exprs[0]->expression.vtype];
983 if (assignop == AINSTR_END ||
984 !ast_compare_type(field->expression.next, exprs[1]))
986 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
987 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
988 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
989 field->expression.next->expression.vtype == TYPE_FUNCTION &&
990 exprs[1]->expression.vtype == TYPE_FUNCTION)
992 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
993 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
999 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1004 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1005 exprs[0]->expression.vtype == TYPE_FIELD &&
1006 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1008 assignop = type_store_instr[TYPE_VECTOR];
1011 assignop = type_store_instr[exprs[0]->expression.vtype];
1014 if (assignop == AINSTR_END) {
1015 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1016 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1017 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1019 else if (!ast_compare_type(exprs[0], exprs[1])) {
1020 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1021 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1022 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1023 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1024 exprs[1]->expression.vtype == TYPE_FUNCTION)
1026 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1027 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
1033 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1036 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1037 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1039 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1041 case opid3('+','+','P'):
1042 case opid3('-','-','P'):
1044 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1045 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1046 parseerror(parser, "invalid type for prefix increment: %s", ty1);
1049 if (op->id == opid3('+','+','P'))
1050 addop = INSTR_ADD_F;
1052 addop = INSTR_SUB_F;
1053 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1054 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1056 if (ast_istype(exprs[0], ast_entfield)) {
1057 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1059 (ast_expression*)parser_const_float_1(parser));
1061 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1063 (ast_expression*)parser_const_float_1(parser));
1066 case opid3('S','+','+'):
1067 case opid3('S','-','-'):
1069 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1070 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1071 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1074 if (op->id == opid3('S','+','+')) {
1075 addop = INSTR_ADD_F;
1076 subop = INSTR_SUB_F;
1078 addop = INSTR_SUB_F;
1079 subop = INSTR_ADD_F;
1081 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1082 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1084 if (ast_istype(exprs[0], ast_entfield)) {
1085 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1087 (ast_expression*)parser_const_float_1(parser));
1089 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1091 (ast_expression*)parser_const_float_1(parser));
1095 out = (ast_expression*)ast_binary_new(ctx, subop,
1097 (ast_expression*)parser_const_float_1(parser));
1099 case opid2('+','='):
1100 case opid2('-','='):
1101 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1102 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1104 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1105 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1106 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1110 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1111 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1113 if (ast_istype(exprs[0], ast_entfield))
1114 assignop = type_storep_instr[exprs[0]->expression.vtype];
1116 assignop = type_store_instr[exprs[0]->expression.vtype];
1117 switch (exprs[0]->expression.vtype) {
1119 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1120 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1121 exprs[0], exprs[1]);
1124 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1125 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1126 exprs[0], exprs[1]);
1129 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1130 type_name[exprs[0]->expression.vtype],
1131 type_name[exprs[1]->expression.vtype]);
1135 case opid2('*','='):
1136 case opid2('/','='):
1137 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1138 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1139 exprs[0]->expression.vtype == TYPE_VECTOR))
1141 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1142 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1143 parseerror(parser, "invalid types used in expression: %s and %s",
1147 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1148 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1150 if (ast_istype(exprs[0], ast_entfield))
1151 assignop = type_storep_instr[exprs[0]->expression.vtype];
1153 assignop = type_store_instr[exprs[0]->expression.vtype];
1154 switch (exprs[0]->expression.vtype) {
1156 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1157 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1158 exprs[0], exprs[1]);
1161 if (op->id == opid2('*','=')) {
1162 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1163 exprs[0], exprs[1]);
1165 /* there's no DIV_VF */
1166 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1167 (ast_expression*)parser_const_float_1(parser),
1171 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1176 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1177 type_name[exprs[0]->expression.vtype],
1178 type_name[exprs[1]->expression.vtype]);
1182 case opid2('&','='):
1183 case opid2('|','='):
1184 if (NotSameType(TYPE_FLOAT)) {
1185 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1186 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1187 parseerror(parser, "invalid types used in expression: %s and %s",
1191 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1192 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1194 if (ast_istype(exprs[0], ast_entfield))
1195 assignop = type_storep_instr[exprs[0]->expression.vtype];
1197 assignop = type_store_instr[exprs[0]->expression.vtype];
1198 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1199 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1200 exprs[0], exprs[1]);
1202 case opid3('&','~','='):
1203 /* This is like: a &= ~(b);
1204 * But QC has no bitwise-not, so we implement it as
1207 if (NotSameType(TYPE_FLOAT)) {
1208 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1209 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1210 parseerror(parser, "invalid types used in expression: %s and %s",
1214 if (ast_istype(exprs[0], ast_entfield))
1215 assignop = type_storep_instr[exprs[0]->expression.vtype];
1217 assignop = type_store_instr[exprs[0]->expression.vtype];
1218 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1221 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1222 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1224 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1225 asbinstore->keep_dest = true;
1226 out = (ast_expression*)asbinstore;
1232 parseerror(parser, "failed to apply operand %s", op->op);
1236 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1237 vec_push(sy->out, syexp(ctx, out));
1241 static bool parser_close_call(parser_t *parser, shunt *sy)
1243 /* was a function call */
1244 ast_expression *fun;
1250 vec_shrinkby(sy->ops, 1);
1251 fid = sy->ops[vec_size(sy->ops)].off;
1253 /* out[fid] is the function
1254 * everything above is parameters...
1255 * 0 params = nothing
1256 * 1 params = ast_expression
1260 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1261 parseerror(parser, "internal error: function call needs function and parameter list...");
1265 fun = sy->out[fid].out;
1267 if (fun == intrinsic_debug_typestring) {
1269 if (fid+2 != vec_size(sy->out) ||
1270 vec_last(sy->out).block)
1272 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1275 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1276 ast_unref(vec_last(sy->out).out);
1277 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1278 (ast_expression*)parser_const_string(parser, ty, false));
1279 vec_shrinkby(sy->out, 1);
1283 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1285 parseerror(parser, "internal error: failed to create ast_call node");
1289 if (fid+1 == vec_size(sy->out)) {
1292 } else if (fid+2 == vec_size(sy->out)) {
1294 vec_shrinkby(sy->out, 1);
1295 params = sy->out[vec_size(sy->out)].block;
1299 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1301 paramcount = vec_size(params->exprs);
1302 call->params = params->exprs;
1303 params->exprs = NULL;
1306 if (!ast_call_check_types(call))
1309 parseerror(parser, "invalid function call");
1313 /* overwrite fid, the function, with a call */
1314 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1316 if (fun->expression.vtype != TYPE_FUNCTION) {
1317 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1321 if (!fun->expression.next) {
1322 parseerror(parser, "could not determine function return type");
1325 if (vec_size(fun->expression.params) != paramcount &&
1326 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1327 vec_size(fun->expression.params) < paramcount))
1330 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1332 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1333 if (opts.standard == COMPILER_GMQCC)
1336 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1337 " -> `%s` has been declared here: %s:%i",
1338 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1339 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1341 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1342 " -> it has been declared here: %s:%i",
1343 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1344 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1350 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1351 "too %s parameters for call to %s: expected %i, got %i\n"
1352 " -> `%s` has been declared here: %s:%i",
1353 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1354 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1356 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1357 "too %s parameters for function call: expected %i, got %i\n"
1358 " -> it has been declared here: %s:%i",
1359 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1360 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1368 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1370 if (!vec_size(sy->ops)) {
1371 parseerror(parser, "unmatched closing paren");
1374 /* this would for bit a + (x) because there are no operators inside (x)
1375 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1376 parseerror(parser, "empty parenthesis expression");
1380 while (vec_size(sy->ops)) {
1381 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1382 if (!parser_close_call(parser, sy))
1386 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1387 vec_shrinkby(sy->ops, 1);
1388 return !functions_only;
1390 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1393 /* pop off the parenthesis */
1394 vec_shrinkby(sy->ops, 1);
1395 /* then apply the index operator */
1396 if (!parser_sy_apply_operator(parser, sy))
1400 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1403 if (vec_last(parser->pot) != POT_TERNARY1) {
1404 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1407 vec_last(parser->pot) = POT_TERNARY2;
1408 /* pop off the parenthesis */
1409 vec_shrinkby(sy->ops, 1);
1412 if (!parser_sy_apply_operator(parser, sy))
1418 static void parser_reclassify_token(parser_t *parser)
1421 for (i = 0; i < operator_count; ++i) {
1422 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1423 parser->tok = TOKEN_OPERATOR;
1429 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1431 ast_expression *expr = NULL;
1433 bool wantop = false;
1434 bool gotmemberof = false;
1436 /* count the parens because an if starts with one, so the
1437 * end of a condition is an unmatched closing paren
1445 parser->lex->flags.noops = false;
1447 parser_reclassify_token(parser);
1452 gotmemberof = false;
1454 parser->memberof = 0;
1456 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1457 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1459 /* a translatable string */
1463 parseerror(parser, "expected operator or end of statement, got constant");
1467 parser->lex->flags.noops = true;
1468 if (!parser_next(parser) || parser->tok != '(') {
1469 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1472 parser->lex->flags.noops = false;
1473 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1474 parseerror(parser, "expected a constant string in translatable-string extension");
1477 val = parser_const_string(parser, parser_tokval(parser), true);
1481 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1482 DEBUGSHUNTDO(con_out("push string\n"));
1484 if (!parser_next(parser) || parser->tok != ')') {
1485 parseerror(parser, "expected closing paren after translatable string");
1489 else if (parser->tok == TOKEN_IDENT)
1491 ast_expression *var;
1493 parseerror(parser, "expected operator or end of statement");
1498 if (opts.standard == COMPILER_GMQCC)
1500 if (parser->memberof == TYPE_ENTITY) {
1501 /* still get vars first since there could be a fieldpointer */
1502 var = parser_find_var(parser, parser_tokval(parser));
1504 var = parser_find_field(parser, parser_tokval(parser));
1506 else if (parser->memberof == TYPE_VECTOR)
1508 parseerror(parser, "TODO: implement effective vector member access");
1511 else if (parser->memberof) {
1512 parseerror(parser, "namespace for member not found");
1516 var = parser_find_var(parser, parser_tokval(parser));
1518 var = parser_find_var(parser, parser_tokval(parser));
1520 var = parser_find_field(parser, parser_tokval(parser));
1524 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1525 var = (ast_expression*)intrinsic_debug_typestring;
1530 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1536 if (ast_istype(var, ast_value)) {
1537 ((ast_value*)var)->uses++;
1539 else if (ast_istype(var, ast_member)) {
1540 ast_member *mem = (ast_member*)var;
1541 if (ast_istype(mem->owner, ast_value))
1542 ((ast_value*)(mem->owner))->uses++;
1545 vec_push(sy.out, syexp(parser_ctx(parser), var));
1546 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1548 else if (parser->tok == TOKEN_FLOATCONST) {
1551 parseerror(parser, "expected operator or end of statement, got constant");
1555 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1558 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1559 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1561 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1564 parseerror(parser, "expected operator or end of statement, got constant");
1568 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1571 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1572 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1574 else if (parser->tok == TOKEN_STRINGCONST) {
1577 parseerror(parser, "expected operator or end of statement, got constant");
1581 val = parser_const_string(parser, parser_tokval(parser), false);
1584 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1585 DEBUGSHUNTDO(con_out("push string\n"));
1587 else if (parser->tok == TOKEN_VECTORCONST) {
1590 parseerror(parser, "expected operator or end of statement, got constant");
1594 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1597 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1598 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1599 parser_token(parser)->constval.v.x,
1600 parser_token(parser)->constval.v.y,
1601 parser_token(parser)->constval.v.z));
1603 else if (parser->tok == '(') {
1604 parseerror(parser, "internal error: '(' should be classified as operator");
1607 else if (parser->tok == '[') {
1608 parseerror(parser, "internal error: '[' should be classified as operator");
1611 else if (parser->tok == ')') {
1613 DEBUGSHUNTDO(con_out("do[op] )\n"));
1617 /* we do expect an operator next */
1618 /* closing an opening paren */
1619 if (!parser_close_paren(parser, &sy, false))
1621 if (vec_last(parser->pot) != POT_PAREN) {
1622 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1625 vec_pop(parser->pot);
1627 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1631 /* allowed for function calls */
1632 if (!parser_close_paren(parser, &sy, true))
1634 if (vec_last(parser->pot) != POT_PAREN) {
1635 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1638 vec_pop(parser->pot);
1642 else if (parser->tok == ']') {
1644 parseerror(parser, "operand expected");
1648 if (!parser_close_paren(parser, &sy, false))
1650 if (vec_last(parser->pot) != POT_PAREN) {
1651 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1654 vec_pop(parser->pot);
1657 else if (parser->tok == TOKEN_TYPENAME) {
1658 parseerror(parser, "unexpected typename");
1661 else if (parser->tok != TOKEN_OPERATOR) {
1663 parseerror(parser, "expected operator or end of statement");
1670 /* classify the operator */
1671 const oper_info *op;
1672 const oper_info *olast = NULL;
1674 for (o = 0; o < operator_count; ++o) {
1675 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1676 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1677 !strcmp(parser_tokval(parser), operators[o].op))
1682 if (o == operator_count) {
1683 /* no operator found... must be the end of the statement */
1686 /* found an operator */
1689 /* when declaring variables, a comma starts a new variable */
1690 if (op->id == opid1(',') && !parens && stopatcomma) {
1691 /* fixup the token */
1696 /* a colon without a pervious question mark cannot be a ternary */
1697 if (!ternaries && op->id == opid2(':','?')) {
1702 if (op->id == opid1(',')) {
1703 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1704 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1708 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1709 olast = &operators[vec_last(sy.ops).etype-1];
1712 (op->prec < olast->prec) ||
1713 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1715 if (!parser_sy_apply_operator(parser, &sy))
1717 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1718 olast = &operators[vec_last(sy.ops).etype-1];
1723 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1724 /* for gmqcc standard: open up the namespace of the previous type */
1725 ast_expression *prevex = vec_last(sy.out).out;
1727 parseerror(parser, "unexpected member operator");
1730 if (prevex->expression.vtype == TYPE_ENTITY)
1731 parser->memberof = TYPE_ENTITY;
1732 else if (prevex->expression.vtype == TYPE_VECTOR)
1733 parser->memberof = TYPE_VECTOR;
1735 parseerror(parser, "type error: type has no members");
1741 if (op->id == opid1('(')) {
1743 size_t sycount = vec_size(sy.out);
1744 DEBUGSHUNTDO(con_out("push [op] (\n"));
1745 ++parens; vec_push(parser->pot, POT_PAREN);
1746 /* we expected an operator, this is the function-call operator */
1747 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1749 ++parens; vec_push(parser->pot, POT_PAREN);
1750 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1751 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1754 } else if (op->id == opid1('[')) {
1756 parseerror(parser, "unexpected array subscript");
1759 ++parens; vec_push(parser->pot, POT_PAREN);
1760 /* push both the operator and the paren, this makes life easier */
1761 vec_push(sy.ops, syop(parser_ctx(parser), op));
1762 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1764 } else if (op->id == opid2('?',':')) {
1765 vec_push(sy.ops, syop(parser_ctx(parser), op));
1766 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1769 vec_push(parser->pot, POT_TERNARY1);
1770 } else if (op->id == opid2(':','?')) {
1771 if (!vec_size(parser->pot)) {
1772 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1775 if (vec_last(parser->pot) != POT_TERNARY1) {
1776 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1779 if (!parser_close_paren(parser, &sy, false))
1781 vec_push(sy.ops, syop(parser_ctx(parser), op));
1785 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1786 vec_push(sy.ops, syop(parser_ctx(parser), op));
1787 wantop = !!(op->flags & OP_SUFFIX);
1790 if (!parser_next(parser)) {
1793 if (parser->tok == ';' ||
1794 (!parens && parser->tok == ']'))
1800 while (vec_size(sy.ops)) {
1801 if (!parser_sy_apply_operator(parser, &sy))
1805 parser->lex->flags.noops = true;
1806 if (!vec_size(sy.out)) {
1807 parseerror(parser, "empty expression");
1810 expr = sy.out[0].out;
1813 DEBUGSHUNTDO(con_out("shunt done\n"));
1814 if (vec_size(parser->pot)) {
1815 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1818 vec_free(parser->pot);
1822 parser->lex->flags.noops = true;
1828 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1830 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1833 if (!parser_next(parser)) {
1840 static void parser_enterblock(parser_t *parser)
1842 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1843 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1844 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1845 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1846 vec_push(parser->_block_ctx, parser_ctx(parser));
1849 static bool parser_leaveblock(parser_t *parser)
1852 size_t locals, typedefs;
1854 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1855 parseerror(parser, "internal error: parser_leaveblock with no block");
1859 util_htdel(vec_last(parser->variables));
1860 vec_pop(parser->variables);
1861 if (!vec_size(parser->_blocklocals)) {
1862 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1866 locals = vec_last(parser->_blocklocals);
1867 vec_pop(parser->_blocklocals);
1868 while (vec_size(parser->_locals) != locals) {
1869 ast_expression *e = vec_last(parser->_locals);
1870 ast_value *v = (ast_value*)e;
1871 vec_pop(parser->_locals);
1872 if (ast_istype(e, ast_value) && !v->uses) {
1873 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name)) {
1880 typedefs = vec_last(parser->_blocktypedefs);
1881 while (vec_size(parser->_typedefs) != typedefs) {
1882 ast_delete(vec_last(parser->_typedefs));
1883 vec_pop(parser->_typedefs);
1885 util_htdel(vec_last(parser->typedefs));
1886 vec_pop(parser->typedefs);
1888 vec_pop(parser->_block_ctx);
1892 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1894 vec_push(parser->_locals, e);
1895 util_htset(vec_last(parser->variables), name, (void*)e);
1898 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
1902 ast_expression *prev;
1904 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING) {
1906 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
1909 parseerror(parser, "internal error: failed to process condition");
1914 if (OPTS_FLAG(CORRECT_LOGIC) &&
1915 !(cond->expression.vtype == TYPE_STRING && OPTS_FLAG(TRUE_EMPTY_STRINGS)))
1917 /* non-floats need to use NOT; except for strings on -ftrue-empty-strings */
1918 unary = (ast_unary*)cond;
1919 if (!ast_istype(cond, ast_unary) || unary->op < INSTR_NOT_F || unary->op > INSTR_NOT_FNC)
1921 /* use the right NOT_ */
1923 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), type_not_instr[cond->expression.vtype], cond);
1926 parseerror(parser, "internal error: failed to process condition");
1933 unary = (ast_unary*)cond;
1934 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
1935 /*&& unary->operand->expression.vtype != TYPE_STRING) */
1937 cond = unary->operand;
1938 unary->operand = NULL;
1941 unary = (ast_unary*)cond;
1945 parseerror(parser, "internal error: failed to process condition");
1947 if (ifnot) *_ifnot = !*_ifnot;
1951 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1954 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
1957 lex_ctx ctx = parser_ctx(parser);
1959 (void)block; /* not touching */
1961 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1962 if (!parser_next(parser)) {
1963 parseerror(parser, "expected condition or 'not'");
1966 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
1968 if (!parser_next(parser)) {
1969 parseerror(parser, "expected condition in parenthesis");
1973 if (parser->tok != '(') {
1974 parseerror(parser, "expected 'if' condition in parenthesis");
1977 /* parse into the expression */
1978 if (!parser_next(parser)) {
1979 parseerror(parser, "expected 'if' condition after opening paren");
1982 /* parse the condition */
1983 cond = parse_expression_leave(parser, false);
1987 if (parser->tok != ')') {
1988 parseerror(parser, "expected closing paren after 'if' condition");
1992 /* parse into the 'then' branch */
1993 if (!parser_next(parser)) {
1994 parseerror(parser, "expected statement for on-true branch of 'if'");
1998 if (!parse_statement_or_block(parser, &ontrue)) {
2002 /* check for an else */
2003 if (!strcmp(parser_tokval(parser), "else")) {
2004 /* parse into the 'else' branch */
2005 if (!parser_next(parser)) {
2006 parseerror(parser, "expected on-false branch after 'else'");
2011 if (!parse_statement_or_block(parser, &onfalse)) {
2018 cond = process_condition(parser, cond, &ifnot);
2020 if (ontrue) ast_delete(ontrue);
2021 if (onfalse) ast_delete(onfalse);
2026 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2028 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2029 *out = (ast_expression*)ifthen;
2033 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2036 ast_expression *cond, *ontrue;
2040 lex_ctx ctx = parser_ctx(parser);
2042 (void)block; /* not touching */
2044 /* skip the 'while' and check for opening paren */
2045 if (!parser_next(parser) || parser->tok != '(') {
2046 parseerror(parser, "expected 'while' condition in parenthesis");
2049 /* parse into the expression */
2050 if (!parser_next(parser)) {
2051 parseerror(parser, "expected 'while' condition after opening paren");
2054 /* parse the condition */
2055 cond = parse_expression_leave(parser, false);
2059 if (parser->tok != ')') {
2060 parseerror(parser, "expected closing paren after 'while' condition");
2064 /* parse into the 'then' branch */
2065 if (!parser_next(parser)) {
2066 parseerror(parser, "expected while-loop body");
2070 if (!parse_statement_or_block(parser, &ontrue)) {
2075 cond = process_condition(parser, cond, &ifnot);
2080 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2081 *out = (ast_expression*)aloop;
2085 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2088 ast_expression *cond, *ontrue;
2092 lex_ctx ctx = parser_ctx(parser);
2094 (void)block; /* not touching */
2096 /* skip the 'do' and get the body */
2097 if (!parser_next(parser)) {
2098 parseerror(parser, "expected loop body");
2101 if (!parse_statement_or_block(parser, &ontrue))
2104 /* expect the "while" */
2105 if (parser->tok != TOKEN_KEYWORD ||
2106 strcmp(parser_tokval(parser), "while"))
2108 parseerror(parser, "expected 'while' and condition");
2113 /* skip the 'while' and check for opening paren */
2114 if (!parser_next(parser) || parser->tok != '(') {
2115 parseerror(parser, "expected 'while' condition in parenthesis");
2119 /* parse into the expression */
2120 if (!parser_next(parser)) {
2121 parseerror(parser, "expected 'while' condition after opening paren");
2125 /* parse the condition */
2126 cond = parse_expression_leave(parser, false);
2130 if (parser->tok != ')') {
2131 parseerror(parser, "expected closing paren after 'while' condition");
2137 if (!parser_next(parser) || parser->tok != ';') {
2138 parseerror(parser, "expected semicolon after condition");
2144 if (!parser_next(parser)) {
2145 parseerror(parser, "parse error");
2151 cond = process_condition(parser, cond, &ifnot);
2156 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2157 *out = (ast_expression*)aloop;
2161 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2164 ast_expression *initexpr, *cond, *increment, *ontrue;
2170 lex_ctx ctx = parser_ctx(parser);
2172 parser_enterblock(parser);
2179 /* skip the 'while' and check for opening paren */
2180 if (!parser_next(parser) || parser->tok != '(') {
2181 parseerror(parser, "expected 'for' expressions in parenthesis");
2184 /* parse into the expression */
2185 if (!parser_next(parser)) {
2186 parseerror(parser, "expected 'for' initializer after opening paren");
2191 if (parser->tok == TOKEN_IDENT)
2192 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2194 if (typevar || parser->tok == TOKEN_TYPENAME) {
2195 if (opts.standard != COMPILER_GMQCC) {
2196 if (parsewarning(parser, WARN_EXTENSIONS,
2197 "current standard does not allow variable declarations in for-loop initializers"))
2200 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false))
2203 else if (parser->tok != ';')
2205 initexpr = parse_expression_leave(parser, false);
2210 /* move on to condition */
2211 if (parser->tok != ';') {
2212 parseerror(parser, "expected semicolon after for-loop initializer");
2215 if (!parser_next(parser)) {
2216 parseerror(parser, "expected for-loop condition");
2220 /* parse the condition */
2221 if (parser->tok != ';') {
2222 cond = parse_expression_leave(parser, false);
2227 /* move on to incrementor */
2228 if (parser->tok != ';') {
2229 parseerror(parser, "expected semicolon after for-loop initializer");
2232 if (!parser_next(parser)) {
2233 parseerror(parser, "expected for-loop condition");
2237 /* parse the incrementor */
2238 if (parser->tok != ')') {
2239 increment = parse_expression_leave(parser, false);
2242 if (!ast_side_effects(increment)) {
2243 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2249 if (parser->tok != ')') {
2250 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2253 /* parse into the 'then' branch */
2254 if (!parser_next(parser)) {
2255 parseerror(parser, "expected for-loop body");
2258 if (!parse_statement_or_block(parser, &ontrue))
2262 cond = process_condition(parser, cond, &ifnot);
2266 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2267 *out = (ast_expression*)aloop;
2269 if (!parser_leaveblock(parser))
2273 if (initexpr) ast_delete(initexpr);
2274 if (cond) ast_delete(cond);
2275 if (increment) ast_delete(increment);
2276 (void)!parser_leaveblock(parser);
2280 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2282 ast_expression *exp = NULL;
2283 ast_return *ret = NULL;
2284 ast_value *expected = parser->function->vtype;
2286 lex_ctx ctx = parser_ctx(parser);
2288 (void)block; /* not touching */
2290 if (!parser_next(parser)) {
2291 parseerror(parser, "expected return expression");
2295 if (parser->tok != ';') {
2296 exp = parse_expression(parser, false);
2300 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2301 parseerror(parser, "return with invalid expression");
2304 ret = ast_return_new(ctx, exp);
2310 if (!parser_next(parser))
2311 parseerror(parser, "parse error");
2312 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2313 if (opts.standard != COMPILER_GMQCC)
2314 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2316 parseerror(parser, "return without value");
2318 ret = ast_return_new(ctx, NULL);
2320 *out = (ast_expression*)ret;
2324 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2326 lex_ctx ctx = parser_ctx(parser);
2328 (void)block; /* not touching */
2330 if (!parser_next(parser) || parser->tok != ';') {
2331 parseerror(parser, "expected semicolon");
2335 if (!parser_next(parser))
2336 parseerror(parser, "parse error");
2338 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
2342 /* returns true when it was a variable qualifier, false otherwise!
2343 * on error, cvq is set to CV_WRONG
2345 static bool parse_var_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *noreturn)
2347 bool had_const = false;
2348 bool had_var = false;
2349 bool had_noref = false;
2350 bool had_noreturn = false;
2353 if (!strcmp(parser_tokval(parser), "const"))
2355 else if (!strcmp(parser_tokval(parser), "var"))
2357 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2359 else if (!strcmp(parser_tokval(parser), "noref"))
2361 else if (!strcmp(parser_tokval(parser), "noreturn"))
2362 had_noreturn = true;
2363 else if (!had_const && !had_var && !had_noref && !had_noreturn) {
2368 if (!parser_next(parser))
2378 *noreturn = had_noreturn;
2381 parseerror(parser, "parse error after variable qualifier");
2386 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2388 ast_expression *operand;
2391 ast_switch *switchnode;
2392 ast_switch_case swcase;
2395 bool noref, noreturn;
2397 lex_ctx ctx = parser_ctx(parser);
2399 (void)block; /* not touching */
2402 /* parse over the opening paren */
2403 if (!parser_next(parser) || parser->tok != '(') {
2404 parseerror(parser, "expected switch operand in parenthesis");
2408 /* parse into the expression */
2409 if (!parser_next(parser)) {
2410 parseerror(parser, "expected switch operand");
2413 /* parse the operand */
2414 operand = parse_expression_leave(parser, false);
2418 switchnode = ast_switch_new(ctx, operand);
2421 if (parser->tok != ')') {
2422 ast_delete(switchnode);
2423 parseerror(parser, "expected closing paren after 'switch' operand");
2427 /* parse over the opening paren */
2428 if (!parser_next(parser) || parser->tok != '{') {
2429 ast_delete(switchnode);
2430 parseerror(parser, "expected list of cases");
2434 if (!parser_next(parser)) {
2435 ast_delete(switchnode);
2436 parseerror(parser, "expected 'case' or 'default'");
2440 /* new block; allow some variables to be declared here */
2441 parser_enterblock(parser);
2444 if (parser->tok == TOKEN_IDENT)
2445 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2446 if (typevar || parser->tok == TOKEN_TYPENAME) {
2447 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false)) {
2448 ast_delete(switchnode);
2453 if (parse_var_qualifiers(parser, true, &cvq, &noref, &noreturn))
2455 if (cvq == CV_WRONG) {
2456 ast_delete(switchnode);
2459 if (!parse_variable(parser, block, false, cvq, NULL, noref, noreturn)) {
2460 ast_delete(switchnode);
2469 while (parser->tok != '}') {
2470 ast_block *caseblock;
2472 if (parser->tok != TOKEN_KEYWORD) {
2473 ast_delete(switchnode);
2474 parseerror(parser, "expected 'case' or 'default'");
2477 if (!strcmp(parser_tokval(parser), "case")) {
2478 if (!parser_next(parser)) {
2479 ast_delete(switchnode);
2480 parseerror(parser, "expected expression for case");
2483 swcase.value = parse_expression_leave(parser, false);
2484 if (!swcase.value) {
2485 ast_delete(switchnode);
2486 parseerror(parser, "expected expression for case");
2489 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2490 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
2491 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2497 else if (!strcmp(parser_tokval(parser), "default")) {
2498 swcase.value = NULL;
2499 if (!parser_next(parser)) {
2500 ast_delete(switchnode);
2501 parseerror(parser, "expected colon");
2506 /* Now the colon and body */
2507 if (parser->tok != ':') {
2508 if (swcase.value) ast_unref(swcase.value);
2509 ast_delete(switchnode);
2510 parseerror(parser, "expected colon");
2514 if (!parser_next(parser)) {
2515 if (swcase.value) ast_unref(swcase.value);
2516 ast_delete(switchnode);
2517 parseerror(parser, "expected statements or case");
2520 caseblock = ast_block_new(parser_ctx(parser));
2522 if (swcase.value) ast_unref(swcase.value);
2523 ast_delete(switchnode);
2526 swcase.code = (ast_expression*)caseblock;
2527 vec_push(switchnode->cases, swcase);
2529 ast_expression *expr;
2530 if (parser->tok == '}')
2532 if (parser->tok == TOKEN_KEYWORD) {
2533 if (!strcmp(parser_tokval(parser), "case") ||
2534 !strcmp(parser_tokval(parser), "default"))
2539 if (!parse_statement(parser, caseblock, &expr, true)) {
2540 ast_delete(switchnode);
2545 if (!ast_block_add_expr(caseblock, expr)) {
2546 ast_delete(switchnode);
2552 parser_leaveblock(parser);
2555 if (parser->tok != '}') {
2556 ast_delete(switchnode);
2557 parseerror(parser, "expected closing paren of case list");
2560 if (!parser_next(parser)) {
2561 ast_delete(switchnode);
2562 parseerror(parser, "parse error after switch");
2565 *out = (ast_expression*)switchnode;
2569 static bool parse_goto(parser_t *parser, ast_expression **out)
2574 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2575 parseerror(parser, "expected label name after `goto`");
2579 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
2581 for (i = 0; i < vec_size(parser->labels); ++i) {
2582 if (!strcmp(parser->labels[i]->name, parser_tokval(parser))) {
2583 ast_goto_set_label(gt, parser->labels[i]);
2587 if (i == vec_size(parser->labels))
2588 vec_push(parser->gotos, gt);
2590 if (!parser_next(parser) || parser->tok != ';') {
2591 parseerror(parser, "semicolon expected after goto label");
2594 if (!parser_next(parser)) {
2595 parseerror(parser, "parse error after goto");
2599 *out = (ast_expression*)gt;
2603 static bool parse_skipwhite(parser_t *parser)
2606 if (!parser_next(parser))
2608 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
2609 return parser->tok < TOKEN_ERROR;
2612 static bool parse_eol(parser_t *parser)
2614 if (!parse_skipwhite(parser))
2616 return parser->tok == TOKEN_EOL;
2619 static bool parse_pragma_do(parser_t *parser)
2621 if (!parser_next(parser) ||
2622 parser->tok != TOKEN_IDENT ||
2623 strcmp(parser_tokval(parser), "pragma"))
2625 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
2628 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
2629 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
2633 if (!strcmp(parser_tokval(parser), "noref")) {
2634 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
2635 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
2638 parser->noref = !!parser_token(parser)->constval.i;
2639 if (!parse_eol(parser)) {
2640 parseerror(parser, "parse error after `noref` pragma");
2646 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
2653 static bool parse_pragma(parser_t *parser)
2656 parser->lex->flags.preprocessing = true;
2657 parser->lex->flags.mergelines = true;
2658 rv = parse_pragma_do(parser);
2659 if (parser->tok != TOKEN_EOL) {
2660 parseerror(parser, "junk after pragma");
2663 parser->lex->flags.preprocessing = false;
2664 parser->lex->flags.mergelines = false;
2665 if (!parser_next(parser)) {
2666 parseerror(parser, "parse error after pragma");
2672 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2674 bool noref, noreturn;
2676 ast_value *typevar = NULL;
2680 if (parser->tok == TOKEN_IDENT)
2681 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2683 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2685 /* local variable */
2687 parseerror(parser, "cannot declare a variable from here");
2690 if (opts.standard == COMPILER_QCC) {
2691 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2694 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false))
2698 else if (parse_var_qualifiers(parser, !!block, &cvq, &noref, &noreturn))
2700 if (cvq == CV_WRONG)
2702 return parse_variable(parser, block, true, cvq, NULL, noref, noreturn);
2704 else if (parser->tok == TOKEN_KEYWORD)
2706 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
2711 if (!parser_next(parser)) {
2712 parseerror(parser, "parse error after __builtin_debug_printtype");
2716 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
2718 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
2719 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
2720 if (!parser_next(parser)) {
2721 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
2727 if (!parse_statement(parser, block, out, allow_cases))
2730 con_out("__builtin_debug_printtype: got no output node\n");
2733 ast_type_to_string(*out, ty, sizeof(ty));
2734 con_out("__builtin_debug_printtype: `%s`\n", ty);
2739 else if (!strcmp(parser_tokval(parser), "return"))
2741 return parse_return(parser, block, out);
2743 else if (!strcmp(parser_tokval(parser), "if"))
2745 return parse_if(parser, block, out);
2747 else if (!strcmp(parser_tokval(parser), "while"))
2749 return parse_while(parser, block, out);
2751 else if (!strcmp(parser_tokval(parser), "do"))
2753 return parse_dowhile(parser, block, out);
2755 else if (!strcmp(parser_tokval(parser), "for"))
2757 if (opts.standard == COMPILER_QCC) {
2758 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2761 return parse_for(parser, block, out);
2763 else if (!strcmp(parser_tokval(parser), "break"))
2765 return parse_break_continue(parser, block, out, false);
2767 else if (!strcmp(parser_tokval(parser), "continue"))
2769 return parse_break_continue(parser, block, out, true);
2771 else if (!strcmp(parser_tokval(parser), "switch"))
2773 return parse_switch(parser, block, out);
2775 else if (!strcmp(parser_tokval(parser), "case") ||
2776 !strcmp(parser_tokval(parser), "default"))
2779 parseerror(parser, "unexpected 'case' label");
2784 else if (!strcmp(parser_tokval(parser), "goto"))
2786 return parse_goto(parser, out);
2788 else if (!strcmp(parser_tokval(parser), "typedef"))
2790 if (!parser_next(parser)) {
2791 parseerror(parser, "expected type definition after 'typedef'");
2794 return parse_typedef(parser);
2796 parseerror(parser, "Unexpected keyword");
2799 else if (parser->tok == '{')
2802 inner = parse_block(parser);
2805 *out = (ast_expression*)inner;
2808 else if (parser->tok == ':')
2812 if (!parser_next(parser)) {
2813 parseerror(parser, "expected label name");
2816 if (parser->tok != TOKEN_IDENT) {
2817 parseerror(parser, "label must be an identifier");
2820 label = ast_label_new(parser_ctx(parser), parser_tokval(parser));
2823 vec_push(parser->labels, label);
2824 *out = (ast_expression*)label;
2825 if (!parser_next(parser)) {
2826 parseerror(parser, "parse error after label");
2829 for (i = 0; i < vec_size(parser->gotos); ++i) {
2830 if (!strcmp(parser->gotos[i]->name, label->name)) {
2831 ast_goto_set_label(parser->gotos[i], label);
2832 vec_remove(parser->gotos, i, 1);
2838 else if (parser->tok == ';')
2840 if (!parser_next(parser)) {
2841 parseerror(parser, "parse error after empty statement");
2848 ast_expression *exp = parse_expression(parser, false);
2852 if (!ast_side_effects(exp)) {
2853 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2860 static bool parse_block_into(parser_t *parser, ast_block *block)
2864 parser_enterblock(parser);
2866 if (!parser_next(parser)) { /* skip the '{' */
2867 parseerror(parser, "expected function body");
2871 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2873 ast_expression *expr = NULL;
2874 if (parser->tok == '}')
2877 if (!parse_statement(parser, block, &expr, false)) {
2878 /* parseerror(parser, "parse error"); */
2884 if (!ast_block_add_expr(block, expr)) {
2891 if (parser->tok != '}') {
2894 (void)parser_next(parser);
2898 if (!parser_leaveblock(parser))
2900 return retval && !!block;
2903 static ast_block* parse_block(parser_t *parser)
2906 block = ast_block_new(parser_ctx(parser));
2909 if (!parse_block_into(parser, block)) {
2910 ast_block_delete(block);
2916 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
2918 if (parser->tok == '{') {
2919 *out = (ast_expression*)parse_block(parser);
2922 return parse_statement(parser, NULL, out, false);
2925 static bool create_vector_members(ast_value *var, ast_member **me)
2928 size_t len = strlen(var->name);
2930 for (i = 0; i < 3; ++i) {
2931 char *name = mem_a(len+3);
2932 memcpy(name, var->name, len);
2934 name[len+1] = 'x'+i;
2936 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
2945 do { ast_member_delete(me[--i]); } while(i);
2949 static bool parse_function_body(parser_t *parser, ast_value *var)
2951 ast_block *block = NULL;
2956 ast_expression *framenum = NULL;
2957 ast_expression *nextthink = NULL;
2958 /* None of the following have to be deleted */
2959 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2960 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2961 bool has_frame_think;
2965 has_frame_think = false;
2966 old = parser->function;
2968 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
2969 parseerror(parser, "gotos/labels leaking");
2973 if (var->expression.flags & AST_FLAG_VARIADIC) {
2974 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2975 "variadic function with implementation will not be able to access additional parameters"))
2981 if (parser->tok == '[') {
2982 /* got a frame definition: [ framenum, nextthink ]
2983 * this translates to:
2984 * self.frame = framenum;
2985 * self.nextthink = time + 0.1;
2986 * self.think = nextthink;
2990 fld_think = parser_find_field(parser, "think");
2991 fld_nextthink = parser_find_field(parser, "nextthink");
2992 fld_frame = parser_find_field(parser, "frame");
2993 if (!fld_think || !fld_nextthink || !fld_frame) {
2994 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2995 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2998 gbl_time = parser_find_global(parser, "time");
2999 gbl_self = parser_find_global(parser, "self");
3000 if (!gbl_time || !gbl_self) {
3001 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3002 parseerror(parser, "please declare the following globals: `time`, `self`");
3006 if (!parser_next(parser))
3009 framenum = parse_expression_leave(parser, true);
3011 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3014 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3015 ast_unref(framenum);
3016 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3020 if (parser->tok != ',') {
3021 ast_unref(framenum);
3022 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3023 parseerror(parser, "Got a %i\n", parser->tok);
3027 if (!parser_next(parser)) {
3028 ast_unref(framenum);
3032 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3034 /* qc allows the use of not-yet-declared functions here
3035 * - this automatically creates a prototype */
3036 ast_value *thinkfunc;
3037 ast_expression *functype = fld_think->expression.next;
3039 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3040 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3041 ast_unref(framenum);
3042 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3046 if (!parser_next(parser)) {
3047 ast_unref(framenum);
3048 ast_delete(thinkfunc);
3052 vec_push(parser->globals, (ast_expression*)thinkfunc);
3053 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
3054 nextthink = (ast_expression*)thinkfunc;
3057 nextthink = parse_expression_leave(parser, true);
3059 ast_unref(framenum);
3060 parseerror(parser, "expected a think-function in [frame,think] notation");
3065 if (!ast_istype(nextthink, ast_value)) {
3066 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3070 if (retval && parser->tok != ']') {
3071 parseerror(parser, "expected closing `]` for [frame,think] notation");
3075 if (retval && !parser_next(parser)) {
3079 if (retval && parser->tok != '{') {
3080 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3085 ast_unref(nextthink);
3086 ast_unref(framenum);
3090 has_frame_think = true;
3093 block = ast_block_new(parser_ctx(parser));
3095 parseerror(parser, "failed to allocate block");
3096 if (has_frame_think) {
3097 ast_unref(nextthink);
3098 ast_unref(framenum);
3103 if (has_frame_think) {
3105 ast_expression *self_frame;
3106 ast_expression *self_nextthink;
3107 ast_expression *self_think;
3108 ast_expression *time_plus_1;
3109 ast_store *store_frame;
3110 ast_store *store_nextthink;
3111 ast_store *store_think;
3113 ctx = parser_ctx(parser);
3114 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3115 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3116 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3118 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3119 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3121 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3122 if (self_frame) ast_delete(self_frame);
3123 if (self_nextthink) ast_delete(self_nextthink);
3124 if (self_think) ast_delete(self_think);
3125 if (time_plus_1) ast_delete(time_plus_1);
3131 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3132 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3133 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3136 ast_delete(self_frame);
3139 if (!store_nextthink) {
3140 ast_delete(self_nextthink);
3144 ast_delete(self_think);
3148 if (store_frame) ast_delete(store_frame);
3149 if (store_nextthink) ast_delete(store_nextthink);
3150 if (store_think) ast_delete(store_think);
3153 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3154 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3155 !ast_block_add_expr(block, (ast_expression*)store_think))
3162 parseerror(parser, "failed to generate code for [frame,think]");
3163 ast_unref(nextthink);
3164 ast_unref(framenum);
3170 parser_enterblock(parser);
3172 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3174 ast_value *param = var->expression.params[parami];
3177 if (param->expression.vtype != TYPE_VECTOR &&
3178 (param->expression.vtype != TYPE_FIELD ||
3179 param->expression.next->expression.vtype != TYPE_VECTOR))
3184 if (!create_vector_members(param, me)) {
3185 ast_block_delete(block);
3189 for (e = 0; e < 3; ++e) {
3190 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3191 ast_block_collect(block, (ast_expression*)me[e]);
3195 func = ast_function_new(ast_ctx(var), var->name, var);
3197 parseerror(parser, "failed to allocate function for `%s`", var->name);
3198 ast_block_delete(block);
3201 vec_push(parser->functions, func);
3203 parser->function = func;
3204 if (!parse_block_into(parser, block)) {
3205 ast_block_delete(block);
3209 vec_push(func->blocks, block);
3211 parser->function = old;
3212 if (!parser_leaveblock(parser))
3214 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3215 parseerror(parser, "internal error: local scopes left");
3219 if (parser->tok == ';')
3220 return parser_next(parser);
3221 else if (opts.standard == COMPILER_QCC)
3222 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3226 vec_pop(parser->functions);
3227 ast_function_delete(func);
3228 var->constval.vfunc = NULL;
3231 (void)!parser_leaveblock(parser);
3232 parser->function = old;
3236 static ast_expression *array_accessor_split(
3241 ast_expression *left,
3242 ast_expression *right
3248 lex_ctx ctx = ast_ctx(array);
3250 if (!left || !right) {
3251 if (left) ast_delete(left);
3252 if (right) ast_delete(right);
3256 cmp = ast_binary_new(ctx, INSTR_LT,
3257 (ast_expression*)index,
3258 (ast_expression*)parser_const_float(parser, middle));
3262 parseerror(parser, "internal error: failed to create comparison for array setter");
3266 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3268 ast_delete(cmp); /* will delete left and right */
3269 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3273 return (ast_expression*)ifthen;
3276 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3278 lex_ctx ctx = ast_ctx(array);
3280 if (from+1 == afterend) {
3281 /* set this value */
3284 ast_array_index *subscript;
3286 int assignop = type_store_instr[value->expression.vtype];
3288 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3289 assignop = INSTR_STORE_V;
3291 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3295 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3297 ast_delete(subscript);
3301 block = ast_block_new(ctx);
3307 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3312 ret = ast_return_new(ctx, NULL);
3318 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3323 return (ast_expression*)block;
3325 ast_expression *left, *right;
3326 size_t diff = afterend - from;
3327 size_t middle = from + diff/2;
3328 left = array_setter_node(parser, array, index, value, from, middle);
3329 right = array_setter_node(parser, array, index, value, middle, afterend);
3330 return array_accessor_split(parser, array, index, middle, left, right);
3334 static ast_expression *array_field_setter_node(
3343 lex_ctx ctx = ast_ctx(array);
3345 if (from+1 == afterend) {
3346 /* set this value */
3349 ast_entfield *entfield;
3350 ast_array_index *subscript;
3352 int assignop = type_storep_instr[value->expression.vtype];
3354 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3355 assignop = INSTR_STOREP_V;
3357 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3361 entfield = ast_entfield_new_force(ctx,
3362 (ast_expression*)entity,
3363 (ast_expression*)subscript,
3364 (ast_expression*)subscript);
3366 ast_delete(subscript);
3370 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3372 ast_delete(entfield);
3376 block = ast_block_new(ctx);
3382 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3387 ret = ast_return_new(ctx, NULL);
3393 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3398 return (ast_expression*)block;
3400 ast_expression *left, *right;
3401 size_t diff = afterend - from;
3402 size_t middle = from + diff/2;
3403 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3404 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3405 return array_accessor_split(parser, array, index, middle, left, right);
3409 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3411 lex_ctx ctx = ast_ctx(array);
3413 if (from+1 == afterend) {
3415 ast_array_index *subscript;
3417 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3421 ret = ast_return_new(ctx, (ast_expression*)subscript);
3423 ast_delete(subscript);
3427 return (ast_expression*)ret;
3429 ast_expression *left, *right;
3430 size_t diff = afterend - from;
3431 size_t middle = from + diff/2;
3432 left = array_getter_node(parser, array, index, from, middle);
3433 right = array_getter_node(parser, array, index, middle, afterend);
3434 return array_accessor_split(parser, array, index, middle, left, right);
3438 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3440 ast_function *func = NULL;
3441 ast_value *fval = NULL;
3442 ast_block *body = NULL;
3444 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3446 parseerror(parser, "failed to create accessor function value");
3450 func = ast_function_new(ast_ctx(array), funcname, fval);
3453 parseerror(parser, "failed to create accessor function node");
3457 body = ast_block_new(ast_ctx(array));
3459 parseerror(parser, "failed to create block for array accessor");
3465 vec_push(func->blocks, body);
3468 vec_push(parser->accessors, fval);
3473 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
3475 ast_expression *root = NULL;
3476 ast_value *index = NULL;
3477 ast_value *value = NULL;
3481 if (!ast_istype(array->expression.next, ast_value)) {
3482 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3486 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3488 func = fval->constval.vfunc;
3489 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3491 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3492 value = ast_value_copy((ast_value*)array->expression.next);
3494 if (!index || !value) {
3495 parseerror(parser, "failed to create locals for array accessor");
3498 (void)!ast_value_set_name(value, "value"); /* not important */
3499 vec_push(fval->expression.params, index);
3500 vec_push(fval->expression.params, value);
3502 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
3504 parseerror(parser, "failed to build accessor search tree");
3508 array->setter = fval;
3509 return ast_block_add_expr(func->blocks[0], root);
3511 if (index) ast_delete(index);
3512 if (value) ast_delete(value);
3513 if (root) ast_delete(root);
3519 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
3521 ast_expression *root = NULL;
3522 ast_value *entity = NULL;
3523 ast_value *index = NULL;
3524 ast_value *value = NULL;
3528 if (!ast_istype(array->expression.next, ast_value)) {
3529 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3533 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3535 func = fval->constval.vfunc;
3536 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3538 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
3539 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3540 value = ast_value_copy((ast_value*)array->expression.next);
3541 if (!entity || !index || !value) {
3542 parseerror(parser, "failed to create locals for array accessor");
3545 (void)!ast_value_set_name(value, "value"); /* not important */
3546 vec_push(fval->expression.params, entity);
3547 vec_push(fval->expression.params, index);
3548 vec_push(fval->expression.params, value);
3550 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3552 parseerror(parser, "failed to build accessor search tree");
3556 array->setter = fval;
3557 return ast_block_add_expr(func->blocks[0], root);
3559 if (entity) ast_delete(entity);
3560 if (index) ast_delete(index);
3561 if (value) ast_delete(value);
3562 if (root) ast_delete(root);
3568 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3570 ast_expression *root = NULL;
3571 ast_value *index = NULL;
3575 /* NOTE: checking array->expression.next rather than elemtype since
3576 * for fields elemtype is a temporary fieldtype.
3578 if (!ast_istype(array->expression.next, ast_value)) {
3579 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3583 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3585 func = fval->constval.vfunc;
3586 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3588 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3591 parseerror(parser, "failed to create locals for array accessor");
3594 vec_push(fval->expression.params, index);
3596 root = array_getter_node(parser, array, index, 0, array->expression.count);
3598 parseerror(parser, "failed to build accessor search tree");
3602 array->getter = fval;
3603 return ast_block_add_expr(func->blocks[0], root);
3605 if (index) ast_delete(index);
3606 if (root) ast_delete(root);
3612 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3613 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3621 bool variadic = false;
3623 ctx = parser_ctx(parser);
3625 /* for the sake of less code we parse-in in this function */
3626 if (!parser_next(parser)) {
3627 parseerror(parser, "expected parameter list");
3633 /* parse variables until we hit a closing paren */
3634 while (parser->tok != ')') {
3636 /* there must be commas between them */
3637 if (parser->tok != ',') {
3638 parseerror(parser, "expected comma or end of parameter list");
3641 if (!parser_next(parser)) {
3642 parseerror(parser, "expected parameter");
3648 if (parser->tok == TOKEN_DOTS) {
3649 /* '...' indicates a varargs function */
3651 if (!parser_next(parser)) {
3652 parseerror(parser, "expected parameter");
3655 if (parser->tok != ')') {
3656 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3662 /* for anything else just parse a typename */
3663 param = parse_typename(parser, NULL, NULL);
3666 vec_push(params, param);
3667 if (param->expression.vtype >= TYPE_VARIANT) {
3668 char typename[1024];
3669 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
3670 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
3676 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
3680 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
3681 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3684 if (!parser_next(parser)) {
3685 parseerror(parser, "parse error after typename");
3689 /* now turn 'var' into a function type */
3690 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3691 fval->expression.next = (ast_expression*)var;
3693 fval->expression.flags |= AST_FLAG_VARIADIC;
3696 var->expression.params = params;
3703 for (i = 0; i < vec_size(params); ++i)
3704 ast_delete(params[i]);
3709 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3711 ast_expression *cexp;
3712 ast_value *cval, *tmp;
3715 ctx = parser_ctx(parser);
3717 if (!parser_next(parser)) {
3719 parseerror(parser, "expected array-size");
3723 cexp = parse_expression_leave(parser, true);
3725 if (!cexp || !ast_istype(cexp, ast_value)) {
3729 parseerror(parser, "expected array-size as constant positive integer");
3732 cval = (ast_value*)cexp;
3734 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3735 tmp->expression.next = (ast_expression*)var;
3738 if (cval->expression.vtype == TYPE_INTEGER)
3739 tmp->expression.count = cval->constval.vint;
3740 else if (cval->expression.vtype == TYPE_FLOAT)
3741 tmp->expression.count = cval->constval.vfloat;
3745 parseerror(parser, "array-size must be a positive integer constant");
3750 if (parser->tok != ']') {
3752 parseerror(parser, "expected ']' after array-size");
3755 if (!parser_next(parser)) {
3757 parseerror(parser, "error after parsing array size");
3763 /* Parse a complete typename.
3764 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3765 * but when parsing variables separated by comma
3766 * 'storebase' should point to where the base-type should be kept.
3767 * The base type makes up every bit of type information which comes *before* the
3770 * The following will be parsed in its entirety:
3772 * The 'basetype' in this case is 'void()'
3773 * and if there's a comma after it, say:
3775 * then the type-information 'void()' can be stored in 'storebase'
3777 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3779 ast_value *var, *tmp;
3782 const char *name = NULL;
3783 bool isfield = false;
3784 bool wasarray = false;
3785 size_t morefields = 0;
3787 ctx = parser_ctx(parser);
3789 /* types may start with a dot */
3790 if (parser->tok == '.') {
3792 /* if we parsed a dot we need a typename now */
3793 if (!parser_next(parser)) {
3794 parseerror(parser, "expected typename for field definition");
3798 /* Further dots are handled seperately because they won't be part of the
3801 while (parser->tok == '.') {
3803 if (!parser_next(parser)) {
3804 parseerror(parser, "expected typename for field definition");
3809 if (parser->tok == TOKEN_IDENT)
3810 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
3811 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
3812 parseerror(parser, "expected typename");
3816 /* generate the basic type value */
3817 if (cached_typedef) {
3818 var = ast_value_copy(cached_typedef);
3819 ast_value_set_name(var, "<type(from_def)>");
3821 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3823 for (; morefields; --morefields) {
3824 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
3825 tmp->expression.next = (ast_expression*)var;
3829 /* do not yet turn into a field - remember:
3830 * .void() foo; is a field too
3831 * .void()() foo; is a function
3835 if (!parser_next(parser)) {
3837 parseerror(parser, "parse error after typename");
3841 /* an opening paren now starts the parameter-list of a function
3842 * this is where original-QC has parameter lists.
3843 * We allow a single parameter list here.
3844 * Much like fteqcc we don't allow `float()() x`
3846 if (parser->tok == '(') {
3847 var = parse_parameter_list(parser, var);
3852 /* store the base if requested */
3854 *storebase = ast_value_copy(var);
3856 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3857 tmp->expression.next = (ast_expression*)*storebase;
3862 /* there may be a name now */
3863 if (parser->tok == TOKEN_IDENT) {
3864 name = util_strdup(parser_tokval(parser));
3866 if (!parser_next(parser)) {
3868 parseerror(parser, "error after variable or field declaration");
3873 /* now this may be an array */
3874 if (parser->tok == '[') {
3876 var = parse_arraysize(parser, var);
3881 /* This is the point where we can turn it into a field */
3883 /* turn it into a field if desired */
3884 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3885 tmp->expression.next = (ast_expression*)var;
3889 /* now there may be function parens again */
3890 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
3891 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3892 if (parser->tok == '(' && wasarray)
3893 parseerror(parser, "arrays as part of a return type is not supported");
3894 while (parser->tok == '(') {
3895 var = parse_parameter_list(parser, var);
3904 /* finally name it */
3906 if (!ast_value_set_name(var, name)) {
3908 parseerror(parser, "internal error: failed to set name");
3911 /* free the name, ast_value_set_name duplicates */
3918 static bool parse_typedef(parser_t *parser)
3920 ast_value *typevar, *oldtype;
3921 ast_expression *old;
3923 typevar = parse_typename(parser, NULL, NULL);
3928 if ( (old = parser_find_var(parser, typevar->name)) ) {
3929 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
3930 " -> `%s` has been declared here: %s:%i",
3931 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
3932 ast_delete(typevar);
3936 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
3937 parseerror(parser, "type `%s` has already been declared here: %s:%i",
3938 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
3939 ast_delete(typevar);
3943 vec_push(parser->_typedefs, typevar);
3944 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
3946 if (parser->tok != ';') {
3947 parseerror(parser, "expected semicolon after typedef");
3950 if (!parser_next(parser)) {
3951 parseerror(parser, "parse error after typedef");
3958 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn)
3962 ast_expression *old;
3966 ast_value *basetype = NULL;
3968 bool isparam = false;
3969 bool isvector = false;
3970 bool cleanvar = true;
3971 bool wasarray = false;
3975 /* get the first complete variable */
3976 var = parse_typename(parser, &basetype, cached_typedef);
3979 ast_delete(basetype);
3987 /* Part 0: finish the type */
3988 if (parser->tok == '(') {
3989 if (opts.standard == COMPILER_QCC)
3990 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3991 var = parse_parameter_list(parser, var);
3997 /* we only allow 1-dimensional arrays */
3998 if (parser->tok == '[') {
4000 var = parse_arraysize(parser, var);
4006 if (parser->tok == '(' && wasarray) {
4007 parseerror(parser, "arrays as part of a return type is not supported");
4008 /* we'll still parse the type completely for now */
4010 /* for functions returning functions */
4011 while (parser->tok == '(') {
4012 if (opts.standard == COMPILER_QCC)
4013 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4014 var = parse_parameter_list(parser, var);
4021 var->cvq = qualifier;
4022 /* in a noref section we simply bump the usecount */
4023 if (noref || parser->noref)
4026 var->expression.flags |= AST_FLAG_NORETURN;
4029 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4030 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4031 * is then filled with the previous definition and the parameter-names replaced.
4034 /* Deal with end_sys_ vars */
4036 if (!strcmp(var->name, "end_sys_globals")) {
4038 parser->crc_globals = vec_size(parser->globals);
4041 else if (!strcmp(var->name, "end_sys_fields")) {
4043 parser->crc_fields = vec_size(parser->fields);
4046 if (was_end && var->expression.vtype == TYPE_FIELD) {
4047 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4048 "global '%s' hint should not be a field",
4049 parser_tokval(parser)))
4056 if (!nofields && var->expression.vtype == TYPE_FIELD)
4058 /* deal with field declarations */
4059 old = parser_find_field(parser, var->name);
4061 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4062 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
4071 parseerror(parser, "field `%s` already declared here: %s:%i",
4072 var->name, ast_ctx(old).file, ast_ctx(old).line);
4077 if (opts.standard == COMPILER_QCC &&
4078 (old = parser_find_global(parser, var->name)))
4080 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4081 parseerror(parser, "field `%s` already declared here: %s:%i",
4082 var->name, ast_ctx(old).file, ast_ctx(old).line);
4089 /* deal with other globals */
4090 old = parser_find_global(parser, var->name);
4091 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
4093 /* This is a function which had a prototype */
4094 if (!ast_istype(old, ast_value)) {
4095 parseerror(parser, "internal error: prototype is not an ast_value");
4099 proto = (ast_value*)old;
4100 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
4101 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
4103 ast_ctx(proto).file, ast_ctx(proto).line);
4107 /* we need the new parameter-names */
4108 for (i = 0; i < vec_size(proto->expression.params); ++i)
4109 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4117 if (opts.standard == COMPILER_GMQCC) {
4118 parseerror(parser, "global `%s` already declared here: %s:%i",
4119 var->name, ast_ctx(old).file, ast_ctx(old).line);
4123 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4124 "global `%s` already declared here: %s:%i",
4125 var->name, ast_ctx(old).file, ast_ctx(old).line))
4130 proto = (ast_value*)old;
4131 if (!ast_istype(old, ast_value)) {
4132 parseerror(parser, "internal error: not an ast_value");
4141 if (opts.standard == COMPILER_QCC &&
4142 (old = parser_find_field(parser, var->name)))
4144 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4145 parseerror(parser, "global `%s` already declared here: %s:%i",
4146 var->name, ast_ctx(old).file, ast_ctx(old).line);
4153 else /* it's not a global */
4155 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4156 if (old && !isparam) {
4157 parseerror(parser, "local `%s` already declared here: %s:%i",
4158 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4162 old = parser_find_local(parser, var->name, 0, &isparam);
4163 if (old && isparam) {
4164 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4165 "local `%s` is shadowing a parameter", var->name))
4167 parseerror(parser, "local `%s` already declared here: %s:%i",
4168 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4172 if (opts.standard != COMPILER_GMQCC) {
4181 * Create the global/local, and deal with vector types.
4184 if (var->expression.vtype == TYPE_VECTOR)
4186 else if (var->expression.vtype == TYPE_FIELD &&
4187 var->expression.next->expression.vtype == TYPE_VECTOR)
4191 if (!create_vector_members(var, me)) {
4198 /* deal with global variables, fields, functions */
4199 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4200 var->isfield = true;
4201 vec_push(parser->fields, (ast_expression*)var);
4202 util_htset(parser->htfields, var->name, var);
4204 for (i = 0; i < 3; ++i) {
4205 vec_push(parser->fields, (ast_expression*)me[i]);
4206 util_htset(parser->htfields, me[i]->name, me[i]);
4211 vec_push(parser->globals, (ast_expression*)var);
4212 util_htset(parser->htglobals, var->name, var);
4214 for (i = 0; i < 3; ++i) {
4215 vec_push(parser->globals, (ast_expression*)me[i]);
4216 util_htset(parser->htglobals, me[i]->name, me[i]);
4221 vec_push(localblock->locals, var);
4222 parser_addlocal(parser, var->name, (ast_expression*)var);
4224 for (i = 0; i < 3; ++i) {
4225 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4226 ast_block_collect(localblock, (ast_expression*)me[i]);
4232 me[0] = me[1] = me[2] = NULL;
4237 if (var->expression.vtype == TYPE_ARRAY) {
4239 snprintf(name, sizeof(name), "%s##SET", var->name);
4240 if (!parser_create_array_setter(parser, var, name))
4242 snprintf(name, sizeof(name), "%s##GET", var->name);
4243 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4246 else if (!localblock && !nofields &&
4247 var->expression.vtype == TYPE_FIELD &&
4248 var->expression.next->expression.vtype == TYPE_ARRAY)
4251 ast_expression *telem;
4253 ast_value *array = (ast_value*)var->expression.next;
4255 if (!ast_istype(var->expression.next, ast_value)) {
4256 parseerror(parser, "internal error: field element type must be an ast_value");
4260 snprintf(name, sizeof(name), "%s##SETF", var->name);
4261 if (!parser_create_array_field_setter(parser, array, name))
4264 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4265 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4266 tfield->expression.next = telem;
4267 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4268 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4276 if (parser->tok == ';') {
4277 ast_delete(basetype);
4278 if (!parser_next(parser)) {
4279 parseerror(parser, "error after variable declaration");
4285 if (parser->tok == ',')
4289 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4292 parseerror(parser, "missing comma or semicolon while parsing variables");
4296 if (localblock && opts.standard == COMPILER_QCC) {
4297 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4298 "initializing expression turns variable `%s` into a constant in this standard",
4305 if (parser->tok != '{') {
4306 if (parser->tok != '=') {
4307 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4311 if (!parser_next(parser)) {
4312 parseerror(parser, "error parsing initializer");
4316 else if (opts.standard == COMPILER_QCC) {
4317 parseerror(parser, "expected '=' before function body in this standard");
4320 if (parser->tok == '#') {
4321 ast_function *func = NULL;
4324 parseerror(parser, "cannot declare builtins within functions");
4327 if (var->expression.vtype != TYPE_FUNCTION) {
4328 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4331 if (!parser_next(parser)) {
4332 parseerror(parser, "expected builtin number");
4335 if (parser->tok != TOKEN_INTCONST) {
4336 parseerror(parser, "builtin number must be an integer constant");
4339 if (parser_token(parser)->constval.i < 0) {
4340 parseerror(parser, "builtin number must be an integer greater than zero");
4344 if (var->hasvalue) {
4345 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
4346 "builtin `%s` has already been defined\n"
4347 " -> previous declaration here: %s:%i",
4348 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
4352 func = ast_function_new(ast_ctx(var), var->name, var);
4354 parseerror(parser, "failed to allocate function for `%s`", var->name);
4357 vec_push(parser->functions, func);
4359 func->builtin = -parser_token(parser)->constval.i-1;
4362 if (!parser_next(parser)) {
4363 parseerror(parser, "expected comma or semicolon");
4365 ast_function_delete(func);
4366 var->constval.vfunc = NULL;
4370 else if (parser->tok == '{' || parser->tok == '[')
4374 parseerror(parser, "cannot declare functions within functions");
4379 ast_ctx(proto) = parser_ctx(parser);
4381 if (!parse_function_body(parser, var))
4383 ast_delete(basetype);
4384 for (i = 0; i < vec_size(parser->gotos); ++i)
4385 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
4386 vec_free(parser->gotos);
4387 vec_free(parser->labels);
4390 ast_expression *cexp;
4393 cexp = parse_expression_leave(parser, true);
4398 cval = (ast_value*)cexp;
4399 if (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
4400 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
4403 if (opts.standard != COMPILER_GMQCC &&
4404 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4405 qualifier != CV_VAR)
4407 var->cvq = CV_CONST;
4409 var->hasvalue = true;
4410 if (cval->expression.vtype == TYPE_STRING)
4411 var->constval.vstring = parser_strdup(cval->constval.vstring);
4412 else if (cval->expression.vtype == TYPE_FIELD)
4413 var->constval.vfield = cval;
4415 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
4420 shunt sy = { NULL, NULL };
4423 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
4424 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
4425 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
4426 if (!parser_sy_apply_operator(parser, &sy))
4429 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
4430 parseerror(parser, "internal error: leaked operands");
4431 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
4441 if (parser->tok == ',') {
4442 if (!parser_next(parser)) {
4443 parseerror(parser, "expected another variable");
4447 if (parser->tok != TOKEN_IDENT) {
4448 parseerror(parser, "expected another variable");
4451 var = ast_value_copy(basetype);
4453 ast_value_set_name(var, parser_tokval(parser));
4454 if (!parser_next(parser)) {
4455 parseerror(parser, "error parsing variable declaration");
4461 if (parser->tok != ';') {
4462 parseerror(parser, "missing semicolon after variables");
4466 if (!parser_next(parser)) {
4467 parseerror(parser, "parse error after variable declaration");
4471 ast_delete(basetype);
4475 if (cleanvar && var)
4477 ast_delete(basetype);
4481 ast_delete(basetype);
4482 if (cleanvar && var)
4484 if (me[0]) ast_member_delete(me[0]);
4485 if (me[1]) ast_member_delete(me[1]);
4486 if (me[2]) ast_member_delete(me[2]);
4490 static bool parser_global_statement(parser_t *parser)
4494 bool noreturn = false;
4495 ast_value *istype = NULL;
4497 if (parser->tok == TOKEN_IDENT)
4498 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
4500 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
4502 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false);
4504 else if (parse_var_qualifiers(parser, false, &cvq, &noref, &noreturn))
4506 if (cvq == CV_WRONG)
4508 return parse_variable(parser, NULL, true, cvq, NULL, noref, noreturn);
4510 else if (parser->tok == TOKEN_KEYWORD)
4512 if (!strcmp(parser_tokval(parser), "typedef")) {
4513 if (!parser_next(parser)) {
4514 parseerror(parser, "expected type definition after 'typedef'");
4517 return parse_typedef(parser);
4519 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
4522 else if (parser->tok == '#')
4524 return parse_pragma(parser);
4526 else if (parser->tok == '$')
4528 if (!parser_next(parser)) {
4529 parseerror(parser, "parse error");
4535 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
4541 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
4543 return util_crc16(old, str, strlen(str));
4546 static void progdefs_crc_file(const char *str)
4548 /* write to progdefs.h here */
4552 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
4554 old = progdefs_crc_sum(old, str);
4555 progdefs_crc_file(str);
4559 static void generate_checksum(parser_t *parser)
4561 uint16_t crc = 0xFFFF;
4565 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
4566 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
4568 progdefs_crc_file("\tint\tpad;\n");
4569 progdefs_crc_file("\tint\tofs_return[3];\n");
4570 progdefs_crc_file("\tint\tofs_parm0[3];\n");
4571 progdefs_crc_file("\tint\tofs_parm1[3];\n");
4572 progdefs_crc_file("\tint\tofs_parm2[3];\n");
4573 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4574 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4575 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4576 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4577 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4579 for (i = 0; i < parser->crc_globals; ++i) {
4580 if (!ast_istype(parser->globals[i], ast_value))
4582 value = (ast_value*)(parser->globals[i]);
4583 switch (value->expression.vtype) {
4584 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4585 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4586 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4587 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4589 crc = progdefs_crc_both(crc, "\tint\t");
4592 crc = progdefs_crc_both(crc, value->name);
4593 crc = progdefs_crc_both(crc, ";\n");
4595 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4596 for (i = 0; i < parser->crc_fields; ++i) {
4597 if (!ast_istype(parser->fields[i], ast_value))
4599 value = (ast_value*)(parser->fields[i]);
4600 switch (value->expression.next->expression.vtype) {
4601 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4602 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4603 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4604 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4606 crc = progdefs_crc_both(crc, "\tint\t");
4609 crc = progdefs_crc_both(crc, value->name);
4610 crc = progdefs_crc_both(crc, ";\n");
4612 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4617 static parser_t *parser;
4623 parser = (parser_t*)mem_a(sizeof(parser_t));
4627 memset(parser, 0, sizeof(*parser));
4629 for (i = 0; i < operator_count; ++i) {
4630 if (operators[i].id == opid1('=')) {
4631 parser->assign_op = operators+i;
4635 if (!parser->assign_op) {
4636 printf("internal error: initializing parser: failed to find assign operator\n");
4641 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4642 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4643 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4644 vec_push(parser->_blocktypedefs, 0);
4648 bool parser_compile()
4650 /* initial lexer/parser state */
4651 parser->lex->flags.noops = true;
4653 if (parser_next(parser))
4655 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4657 if (!parser_global_statement(parser)) {
4658 if (parser->tok == TOKEN_EOF)
4659 parseerror(parser, "unexpected eof");
4660 else if (!parser->errors)
4661 parseerror(parser, "there have been errors, bailing out");
4662 lex_close(parser->lex);
4668 parseerror(parser, "parse error");
4669 lex_close(parser->lex);
4674 lex_close(parser->lex);
4677 return !parser->errors;
4680 bool parser_compile_file(const char *filename)
4682 parser->lex = lex_open(filename);
4684 con_err("failed to open file \"%s\"\n", filename);
4687 return parser_compile();
4690 bool parser_compile_string_len(const char *name, const char *str, size_t len)
4692 parser->lex = lex_open_string(str, len, name);
4694 con_err("failed to create lexer for string \"%s\"\n", name);
4697 return parser_compile();
4700 bool parser_compile_string(const char *name, const char *str)
4702 parser->lex = lex_open_string(str, strlen(str), name);
4704 con_err("failed to create lexer for string \"%s\"\n", name);
4707 return parser_compile();
4710 void parser_cleanup()
4713 for (i = 0; i < vec_size(parser->accessors); ++i) {
4714 ast_delete(parser->accessors[i]->constval.vfunc);
4715 parser->accessors[i]->constval.vfunc = NULL;
4716 ast_delete(parser->accessors[i]);
4718 for (i = 0; i < vec_size(parser->functions); ++i) {
4719 ast_delete(parser->functions[i]);
4721 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4722 ast_delete(parser->imm_vector[i]);
4724 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4725 ast_delete(parser->imm_string[i]);
4727 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4728 ast_delete(parser->imm_float[i]);
4730 for (i = 0; i < vec_size(parser->fields); ++i) {
4731 ast_delete(parser->fields[i]);
4733 for (i = 0; i < vec_size(parser->globals); ++i) {
4734 ast_delete(parser->globals[i]);
4736 vec_free(parser->accessors);
4737 vec_free(parser->functions);
4738 vec_free(parser->imm_vector);
4739 vec_free(parser->imm_string);
4740 vec_free(parser->imm_float);
4741 vec_free(parser->globals);
4742 vec_free(parser->fields);
4744 for (i = 0; i < vec_size(parser->variables); ++i)
4745 util_htdel(parser->variables[i]);
4746 vec_free(parser->variables);
4747 vec_free(parser->_blocklocals);
4748 vec_free(parser->_locals);
4750 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4751 ast_delete(parser->_typedefs[i]);
4752 vec_free(parser->_typedefs);
4753 for (i = 0; i < vec_size(parser->typedefs); ++i)
4754 util_htdel(parser->typedefs[i]);
4755 vec_free(parser->typedefs);
4756 vec_free(parser->_blocktypedefs);
4758 vec_free(parser->_block_ctx);
4760 vec_free(parser->labels);
4761 vec_free(parser->gotos);
4766 bool parser_finish(const char *output)
4772 if (!parser->errors)
4774 ir = ir_builder_new("gmqcc_out");
4776 con_out("failed to allocate builder\n");
4780 for (i = 0; i < vec_size(parser->fields); ++i) {
4783 if (!ast_istype(parser->fields[i], ast_value))
4785 field = (ast_value*)parser->fields[i];
4786 hasvalue = field->hasvalue;
4787 field->hasvalue = false;
4788 if (!ast_global_codegen((ast_value*)field, ir, true)) {
4789 con_out("failed to generate field %s\n", field->name);
4790 ir_builder_delete(ir);
4795 ast_expression *subtype;
4796 field->hasvalue = true;
4797 subtype = field->expression.next;
4798 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
4799 if (subtype->expression.vtype == TYPE_FIELD)
4800 ifld->fieldtype = subtype->expression.next->expression.vtype;
4801 else if (subtype->expression.vtype == TYPE_FUNCTION)
4802 ifld->outtype = subtype->expression.next->expression.vtype;
4803 (void)!ir_value_set_field(field->ir_v, ifld);
4806 for (i = 0; i < vec_size(parser->globals); ++i) {
4808 if (!ast_istype(parser->globals[i], ast_value))
4810 asvalue = (ast_value*)(parser->globals[i]);
4811 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
4812 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
4813 "unused global: `%s`", asvalue->name);
4815 if (!ast_global_codegen(asvalue, ir, false)) {
4816 con_out("failed to generate global %s\n", asvalue->name);
4817 ir_builder_delete(ir);
4821 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4822 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
4823 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
4824 ir_builder_delete(ir);
4828 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4829 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
4830 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
4831 ir_builder_delete(ir);
4835 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4836 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
4837 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
4838 ir_builder_delete(ir);
4842 for (i = 0; i < vec_size(parser->globals); ++i) {
4844 if (!ast_istype(parser->globals[i], ast_value))
4846 asvalue = (ast_value*)(parser->globals[i]);
4847 if (!ast_generate_accessors(asvalue, ir)) {
4848 ir_builder_delete(ir);
4852 for (i = 0; i < vec_size(parser->fields); ++i) {
4854 asvalue = (ast_value*)(parser->fields[i]->expression.next);
4856 if (!ast_istype((ast_expression*)asvalue, ast_value))
4858 if (asvalue->expression.vtype != TYPE_ARRAY)
4860 if (!ast_generate_accessors(asvalue, ir)) {
4861 ir_builder_delete(ir);
4865 for (i = 0; i < vec_size(parser->functions); ++i) {
4866 if (!ast_function_codegen(parser->functions[i], ir)) {
4867 con_out("failed to generate function %s\n", parser->functions[i]->name);
4868 ir_builder_delete(ir);
4873 ir_builder_dump(ir, con_out);
4874 for (i = 0; i < vec_size(parser->functions); ++i) {
4875 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4876 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4877 ir_builder_delete(ir);
4884 ir_builder_dump(ir, con_out);
4886 generate_checksum(parser);
4888 if (!ir_builder_generate(ir, output)) {
4889 con_out("*** failed to generate output file\n");
4890 ir_builder_delete(ir);
4895 ir_builder_delete(ir);
4899 con_out("*** there were compile errors\n");