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
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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 void parser_enterblock(parser_t *parser);
102 static bool parser_leaveblock(parser_t *parser);
103 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
104 static bool parse_typedef(parser_t *parser);
105 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref);
106 static ast_block* parse_block(parser_t *parser);
107 static bool parse_block_into(parser_t *parser, ast_block *block);
108 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
109 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
110 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
111 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
113 static void parseerror(parser_t *parser, const char *fmt, ...)
120 con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap);
124 /* returns true if it counts as an error */
125 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
128 int lvl = LVL_WARNING;
130 if (!OPTS_WARN(warntype))
139 con_vprintmsg(lvl, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, (opts.werror ? "error" : "warning"), fmt, ap);
145 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
148 int lvl = LVL_WARNING;
150 if (!OPTS_WARN(warntype))
157 con_vprintmsg(lvl, ctx.file, ctx.line, (opts.werror ? "error" : "warning"), fmt, ap);
163 /**********************************************************************
164 * some maths used for constant folding
167 vector vec3_add(vector a, vector b)
176 vector vec3_sub(vector a, vector b)
185 qcfloat vec3_mulvv(vector a, vector b)
187 return (a.x * b.x + a.y * b.y + a.z * b.z);
190 vector vec3_mulvf(vector a, float b)
199 /**********************************************************************
203 bool parser_next(parser_t *parser)
205 /* lex_do kills the previous token */
206 parser->tok = lex_do(parser->lex);
207 if (parser->tok == TOKEN_EOF)
209 if (parser->tok >= TOKEN_ERROR) {
210 parseerror(parser, "lex error");
216 #define parser_tokval(p) ((p)->lex->tok.value)
217 #define parser_token(p) (&((p)->lex->tok))
218 #define parser_ctx(p) ((p)->lex->tok.ctx)
220 static ast_value* parser_const_float(parser_t *parser, double d)
224 for (i = 0; i < vec_size(parser->imm_float); ++i) {
225 const double compare = parser->imm_float[i]->constval.vfloat;
226 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
227 return parser->imm_float[i];
229 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
231 out->hasvalue = true;
232 out->constval.vfloat = d;
233 vec_push(parser->imm_float, out);
237 static ast_value* parser_const_float_0(parser_t *parser)
239 if (!parser->imm_float_zero)
240 parser->imm_float_zero = parser_const_float(parser, 0);
241 return parser->imm_float_zero;
244 static ast_value* parser_const_float_1(parser_t *parser)
246 if (!parser->imm_float_one)
247 parser->imm_float_one = parser_const_float(parser, 1);
248 return parser->imm_float_one;
251 static char *parser_strdup(const char *str)
254 /* actually dup empty strings */
255 char *out = mem_a(1);
259 return util_strdup(str);
262 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
266 for (i = 0; i < vec_size(parser->imm_string); ++i) {
267 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
268 return parser->imm_string[i];
272 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
273 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
275 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
277 out->hasvalue = true;
278 out->constval.vstring = parser_strdup(str);
279 vec_push(parser->imm_string, out);
283 static ast_value* parser_const_vector(parser_t *parser, vector v)
287 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
288 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
289 return parser->imm_vector[i];
291 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
293 out->hasvalue = true;
294 out->constval.vvec = v;
295 vec_push(parser->imm_vector, out);
299 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
305 return parser_const_vector(parser, v);
308 static ast_value* parser_const_vector_0(parser_t *parser)
310 if (!parser->imm_vector_zero)
311 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
312 return parser->imm_vector_zero;
315 static ast_expression* parser_find_field(parser_t *parser, const char *name)
317 return util_htget(parser->htfields, name);
320 static ast_expression* parser_find_global(parser_t *parser, const char *name)
322 return util_htget(parser->htglobals, name);
325 static ast_expression* parser_find_param(parser_t *parser, const char *name)
329 if (!parser->function)
331 fun = parser->function->vtype;
332 for (i = 0; i < vec_size(fun->expression.params); ++i) {
333 if (!strcmp(fun->expression.params[i]->name, name))
334 return (ast_expression*)(fun->expression.params[i]);
339 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
344 hash = util_hthash(parser->htglobals, name);
347 for (i = vec_size(parser->variables); i > upto;) {
349 if ( (e = util_htgeth(parser->variables[i], name, hash)) )
353 return parser_find_param(parser, name);
356 static ast_expression* parser_find_var(parser_t *parser, const char *name)
360 v = parser_find_local(parser, name, 0, &dummy);
361 if (!v) v = parser_find_global(parser, name);
365 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
369 hash = util_hthash(parser->typedefs[0], name);
371 for (i = vec_size(parser->typedefs); i > upto;) {
373 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
381 size_t etype; /* 0 = expression, others are operators */
385 ast_block *block; /* for commas and function calls */
394 #define SY_PAREN_EXPR '('
395 #define SY_PAREN_FUNC 'f'
396 #define SY_PAREN_INDEX '['
397 #define SY_PAREN_TERNARY '?'
399 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
410 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
414 e.out = (ast_expression*)v;
421 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
423 e.etype = 1 + (op - operators);
432 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
444 # define DEBUGSHUNTDO(x) x
446 # define DEBUGSHUNTDO(x)
449 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
450 * so we need to rotate it to become ent.(foo[n]).
452 static bool rotate_entfield_array_index_nodes(ast_expression **out)
454 ast_array_index *index;
455 ast_entfield *entfield;
459 ast_expression *entity;
461 lex_ctx ctx = ast_ctx(*out);
463 if (!ast_istype(*out, ast_array_index))
465 index = (ast_array_index*)*out;
467 if (!ast_istype(index->array, ast_entfield))
469 entfield = (ast_entfield*)index->array;
471 if (!ast_istype(entfield->field, ast_value))
473 field = (ast_value*)entfield->field;
476 entity = entfield->entity;
480 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
481 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
482 *out = (ast_expression*)entfield;
487 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
491 ast_expression *out = NULL;
492 ast_expression *exprs[3];
493 ast_block *blocks[3];
494 ast_value *asvalue[3];
495 ast_binstore *asbinstore;
496 size_t i, assignop, addop, subop;
497 qcint generated_op = 0;
502 if (!vec_size(sy->ops)) {
503 parseerror(parser, "internal error: missing operator");
507 if (vec_last(sy->ops).paren) {
508 parseerror(parser, "unmatched parenthesis");
512 op = &operators[vec_last(sy->ops).etype - 1];
513 ctx = vec_last(sy->ops).ctx;
515 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
517 if (vec_size(sy->out) < op->operands) {
518 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
519 op->op, (int)op->id);
523 vec_shrinkby(sy->ops, 1);
525 /* op(:?) has no input and no output */
529 vec_shrinkby(sy->out, op->operands);
530 for (i = 0; i < op->operands; ++i) {
531 exprs[i] = sy->out[vec_size(sy->out)+i].out;
532 blocks[i] = sy->out[vec_size(sy->out)+i].block;
533 asvalue[i] = (ast_value*)exprs[i];
536 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
537 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
541 #define NotSameType(T) \
542 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
543 exprs[0]->expression.vtype != T)
544 #define CanConstFold1(A) \
545 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST))
546 #define CanConstFold(A, B) \
547 (CanConstFold1(A) && CanConstFold1(B))
548 #define ConstV(i) (asvalue[(i)]->constval.vvec)
549 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
550 #define ConstS(i) (asvalue[(i)]->constval.vstring)
554 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
558 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
559 if (exprs[1]->expression.vtype != TYPE_FIELD) {
560 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
563 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
565 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
566 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
570 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
576 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
577 !(exprs[0]->expression.vtype == TYPE_FIELD &&
578 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
580 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
581 parseerror(parser, "cannot index value of type %s", ty1);
584 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
585 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
586 parseerror(parser, "index must be of type float, not %s", ty1);
589 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
590 if (rotate_entfield_array_index_nodes(&out))
593 /* This is not broken in fteqcc anymore */
594 if (opts.standard != COMPILER_GMQCC) {
595 /* this error doesn't need to make us bail out */
596 (void)!parsewarning(parser, WARN_EXTENSIONS,
597 "accessing array-field members of an entity without parenthesis\n"
598 " -> this is an extension from -std=gmqcc");
606 if (!ast_block_add_expr(blocks[0], exprs[1]))
609 blocks[0] = ast_block_new(ctx);
610 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
611 !ast_block_add_expr(blocks[0], exprs[1]))
616 if (!ast_block_set_type(blocks[0], exprs[1]))
619 vec_push(sy->out, syblock(ctx, blocks[0]));
626 switch (exprs[0]->expression.vtype) {
628 if (CanConstFold1(exprs[0]))
629 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
631 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
632 (ast_expression*)parser_const_float_0(parser),
636 if (CanConstFold1(exprs[0]))
637 out = (ast_expression*)parser_const_vector_f(parser,
638 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
640 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
641 (ast_expression*)parser_const_vector_0(parser),
645 parseerror(parser, "invalid types used in expression: cannot negate type %s",
646 type_name[exprs[0]->expression.vtype]);
652 switch (exprs[0]->expression.vtype) {
654 if (CanConstFold1(exprs[0]))
655 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
657 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
660 if (CanConstFold1(exprs[0]))
661 out = (ast_expression*)parser_const_float(parser,
662 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
664 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
667 if (CanConstFold1(exprs[0]))
668 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
670 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
672 /* we don't constant-fold NOT for these types */
674 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
677 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
680 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
681 type_name[exprs[0]->expression.vtype]);
687 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
688 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
690 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
691 type_name[exprs[0]->expression.vtype],
692 type_name[exprs[1]->expression.vtype]);
695 switch (exprs[0]->expression.vtype) {
697 if (CanConstFold(exprs[0], exprs[1]))
699 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
702 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
705 if (CanConstFold(exprs[0], exprs[1]))
706 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
708 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
711 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
712 type_name[exprs[0]->expression.vtype],
713 type_name[exprs[1]->expression.vtype]);
718 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
719 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
721 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
722 type_name[exprs[1]->expression.vtype],
723 type_name[exprs[0]->expression.vtype]);
726 switch (exprs[0]->expression.vtype) {
728 if (CanConstFold(exprs[0], exprs[1]))
729 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
731 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
734 if (CanConstFold(exprs[0], exprs[1]))
735 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
737 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
740 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
741 type_name[exprs[1]->expression.vtype],
742 type_name[exprs[0]->expression.vtype]);
747 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
748 exprs[0]->expression.vtype != TYPE_VECTOR &&
749 exprs[0]->expression.vtype != TYPE_FLOAT &&
750 exprs[1]->expression.vtype != TYPE_VECTOR &&
751 exprs[1]->expression.vtype != TYPE_FLOAT)
753 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
754 type_name[exprs[1]->expression.vtype],
755 type_name[exprs[0]->expression.vtype]);
758 switch (exprs[0]->expression.vtype) {
760 if (exprs[1]->expression.vtype == TYPE_VECTOR)
762 if (CanConstFold(exprs[0], exprs[1]))
763 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
765 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
769 if (CanConstFold(exprs[0], exprs[1]))
770 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
772 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
776 if (exprs[1]->expression.vtype == TYPE_FLOAT)
778 if (CanConstFold(exprs[0], exprs[1]))
779 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
781 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
785 if (CanConstFold(exprs[0], exprs[1]))
786 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
788 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
792 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
793 type_name[exprs[1]->expression.vtype],
794 type_name[exprs[0]->expression.vtype]);
799 if (NotSameType(TYPE_FLOAT)) {
800 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
801 type_name[exprs[0]->expression.vtype],
802 type_name[exprs[1]->expression.vtype]);
805 if (CanConstFold(exprs[0], exprs[1]))
806 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
808 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
812 parseerror(parser, "qc does not have a modulo operator");
816 if (NotSameType(TYPE_FLOAT)) {
817 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
818 type_name[exprs[0]->expression.vtype],
819 type_name[exprs[1]->expression.vtype]);
822 if (CanConstFold(exprs[0], exprs[1]))
823 out = (ast_expression*)parser_const_float(parser,
824 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
825 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
827 out = (ast_expression*)ast_binary_new(ctx,
828 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
832 parseerror(parser, "TODO: bitxor");
837 case opid3('<','<','='):
838 case opid3('>','>','='):
839 parseerror(parser, "TODO: shifts");
843 generated_op += 1; /* INSTR_OR */
845 generated_op += INSTR_AND;
847 if (NotSameType(TYPE_FLOAT)) {
848 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
849 type_name[exprs[0]->expression.vtype],
850 type_name[exprs[1]->expression.vtype]);
851 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
852 parseerror(parser, "TODO: optional early out");
856 if (opts.standard == COMPILER_GMQCC)
857 con_out("TODO: early out logic\n");
858 if (CanConstFold(exprs[0], exprs[1]))
859 out = (ast_expression*)parser_const_float(parser,
860 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
862 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
866 if (vec_last(parser->pot) != POT_TERNARY2) {
867 parseerror(parser, "mismatched parenthesis/ternary");
870 vec_pop(parser->pot);
871 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
872 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
873 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
874 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
877 if (CanConstFold1(exprs[0]))
878 out = (ConstF(0) ? exprs[1] : exprs[2]);
880 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
884 generated_op += 1; /* INSTR_GT */
886 generated_op += 1; /* INSTR_LT */
887 case opid2('>', '='):
888 generated_op += 1; /* INSTR_GE */
889 case opid2('<', '='):
890 generated_op += INSTR_LE;
891 if (NotSameType(TYPE_FLOAT)) {
892 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
893 type_name[exprs[0]->expression.vtype],
894 type_name[exprs[1]->expression.vtype]);
897 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
899 case opid2('!', '='):
900 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
901 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
902 type_name[exprs[0]->expression.vtype],
903 type_name[exprs[1]->expression.vtype]);
906 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
908 case opid2('=', '='):
909 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
910 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
911 type_name[exprs[0]->expression.vtype],
912 type_name[exprs[1]->expression.vtype]);
915 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
919 if (ast_istype(exprs[0], ast_entfield)) {
920 ast_expression *field = ((ast_entfield*)exprs[0])->field;
921 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
922 exprs[0]->expression.vtype == TYPE_FIELD &&
923 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
925 assignop = type_storep_instr[TYPE_VECTOR];
928 assignop = type_storep_instr[exprs[0]->expression.vtype];
929 if (!ast_compare_type(field->expression.next, exprs[1])) {
930 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
931 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
932 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
933 field->expression.next->expression.vtype == TYPE_FUNCTION &&
934 exprs[1]->expression.vtype == TYPE_FUNCTION)
936 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
937 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
943 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
948 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
949 exprs[0]->expression.vtype == TYPE_FIELD &&
950 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
952 assignop = type_store_instr[TYPE_VECTOR];
955 assignop = type_store_instr[exprs[0]->expression.vtype];
958 if (assignop == AINSTR_END) {
959 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
960 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
961 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
963 else if (!ast_compare_type(exprs[0], exprs[1])) {
964 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
965 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
966 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
967 exprs[0]->expression.vtype == TYPE_FUNCTION &&
968 exprs[1]->expression.vtype == TYPE_FUNCTION)
970 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
971 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
977 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
980 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
981 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
983 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
985 case opid3('+','+','P'):
986 case opid3('-','-','P'):
988 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
989 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
990 parseerror(parser, "invalid type for prefix increment: %s", ty1);
993 if (op->id == opid3('+','+','P'))
997 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
998 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1000 if (ast_istype(exprs[0], ast_entfield)) {
1001 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1003 (ast_expression*)parser_const_float_1(parser));
1005 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1007 (ast_expression*)parser_const_float_1(parser));
1010 case opid3('S','+','+'):
1011 case opid3('S','-','-'):
1013 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1014 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1015 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1018 if (op->id == opid3('S','+','+')) {
1019 addop = INSTR_ADD_F;
1020 subop = INSTR_SUB_F;
1022 addop = INSTR_SUB_F;
1023 subop = INSTR_ADD_F;
1025 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1026 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1028 if (ast_istype(exprs[0], ast_entfield)) {
1029 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1031 (ast_expression*)parser_const_float_1(parser));
1033 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1035 (ast_expression*)parser_const_float_1(parser));
1039 out = (ast_expression*)ast_binary_new(ctx, subop,
1041 (ast_expression*)parser_const_float_1(parser));
1043 case opid2('+','='):
1044 case opid2('-','='):
1045 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1046 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1048 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1049 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1050 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1054 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1055 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1057 if (ast_istype(exprs[0], ast_entfield))
1058 assignop = type_storep_instr[exprs[0]->expression.vtype];
1060 assignop = type_store_instr[exprs[0]->expression.vtype];
1061 switch (exprs[0]->expression.vtype) {
1063 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1064 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1065 exprs[0], exprs[1]);
1068 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1069 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1070 exprs[0], exprs[1]);
1073 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1074 type_name[exprs[0]->expression.vtype],
1075 type_name[exprs[1]->expression.vtype]);
1079 case opid2('*','='):
1080 case opid2('/','='):
1081 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1082 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1083 exprs[0]->expression.vtype == TYPE_VECTOR))
1085 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1086 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1087 parseerror(parser, "invalid types used in expression: %s and %s",
1091 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1092 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1094 if (ast_istype(exprs[0], ast_entfield))
1095 assignop = type_storep_instr[exprs[0]->expression.vtype];
1097 assignop = type_store_instr[exprs[0]->expression.vtype];
1098 switch (exprs[0]->expression.vtype) {
1100 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1101 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1102 exprs[0], exprs[1]);
1105 if (op->id == opid2('*','=')) {
1106 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1107 exprs[0], exprs[1]);
1109 /* there's no DIV_VF */
1110 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1111 (ast_expression*)parser_const_float_1(parser),
1115 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1120 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1121 type_name[exprs[0]->expression.vtype],
1122 type_name[exprs[1]->expression.vtype]);
1126 case opid2('&','='):
1127 case opid2('|','='):
1128 if (NotSameType(TYPE_FLOAT)) {
1129 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1130 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1131 parseerror(parser, "invalid types used in expression: %s and %s",
1135 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1136 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1138 if (ast_istype(exprs[0], ast_entfield))
1139 assignop = type_storep_instr[exprs[0]->expression.vtype];
1141 assignop = type_store_instr[exprs[0]->expression.vtype];
1142 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1143 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1144 exprs[0], exprs[1]);
1146 case opid3('&','~','='):
1147 /* This is like: a &= ~(b);
1148 * But QC has no bitwise-not, so we implement it as
1151 if (NotSameType(TYPE_FLOAT)) {
1152 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1153 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1154 parseerror(parser, "invalid types used in expression: %s and %s",
1158 if (ast_istype(exprs[0], ast_entfield))
1159 assignop = type_storep_instr[exprs[0]->expression.vtype];
1161 assignop = type_store_instr[exprs[0]->expression.vtype];
1162 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1165 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1166 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1168 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1169 asbinstore->keep_dest = true;
1170 out = (ast_expression*)asbinstore;
1176 parseerror(parser, "failed to apply operand %s", op->op);
1180 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1181 vec_push(sy->out, syexp(ctx, out));
1185 static bool parser_close_call(parser_t *parser, shunt *sy)
1187 /* was a function call */
1188 ast_expression *fun;
1194 vec_shrinkby(sy->ops, 1);
1195 fid = sy->ops[vec_size(sy->ops)].off;
1197 /* out[fid] is the function
1198 * everything above is parameters...
1199 * 0 params = nothing
1200 * 1 params = ast_expression
1204 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1205 parseerror(parser, "internal error: function call needs function and parameter list...");
1209 fun = sy->out[fid].out;
1211 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1213 parseerror(parser, "out of memory");
1217 if (fid+1 == vec_size(sy->out)) {
1220 } else if (fid+2 == vec_size(sy->out)) {
1222 vec_shrinkby(sy->out, 1);
1223 params = sy->out[vec_size(sy->out)].block;
1227 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1229 paramcount = vec_size(params->exprs);
1230 call->params = params->exprs;
1231 params->exprs = NULL;
1234 if (!ast_call_check_types(call))
1237 parseerror(parser, "invalid function call");
1241 /* overwrite fid, the function, with a call */
1242 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1244 if (fun->expression.vtype != TYPE_FUNCTION) {
1245 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1249 if (!fun->expression.next) {
1250 parseerror(parser, "could not determine function return type");
1253 if (vec_size(fun->expression.params) != paramcount &&
1254 !(fun->expression.variadic &&
1255 vec_size(fun->expression.params) < paramcount))
1258 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1260 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1261 if (opts.standard == COMPILER_GMQCC)
1264 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1265 " -> `%s` has been declared here: %s:%i",
1266 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1267 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1269 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1270 " -> `%s` has been declared here: %s:%i",
1271 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1272 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1278 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1279 "too %s parameters for call to %s: expected %i, got %i\n"
1280 " -> `%s` has been declared here: %s:%i",
1281 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1282 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1284 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1285 "too %s parameters for function call: expected %i, got %i\n"
1286 " -> `%s` has been declared here: %s:%i",
1287 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1288 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1296 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1298 if (!vec_size(sy->ops)) {
1299 parseerror(parser, "unmatched closing paren");
1302 /* this would for bit a + (x) because there are no operators inside (x)
1303 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1304 parseerror(parser, "empty parenthesis expression");
1308 while (vec_size(sy->ops)) {
1309 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1310 if (!parser_close_call(parser, sy))
1314 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1315 vec_shrinkby(sy->ops, 1);
1316 return !functions_only;
1318 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1321 /* pop off the parenthesis */
1322 vec_shrinkby(sy->ops, 1);
1323 /* then apply the index operator */
1324 if (!parser_sy_apply_operator(parser, sy))
1328 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1331 if (vec_last(parser->pot) != POT_TERNARY1) {
1332 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1335 vec_last(parser->pot) = POT_TERNARY2;
1336 /* pop off the parenthesis */
1337 vec_shrinkby(sy->ops, 1);
1340 if (!parser_sy_apply_operator(parser, sy))
1346 static void parser_reclassify_token(parser_t *parser)
1349 for (i = 0; i < operator_count; ++i) {
1350 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1351 parser->tok = TOKEN_OPERATOR;
1357 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1359 ast_expression *expr = NULL;
1361 bool wantop = false;
1362 bool gotmemberof = false;
1364 /* count the parens because an if starts with one, so the
1365 * end of a condition is an unmatched closing paren
1373 parser->lex->flags.noops = false;
1375 parser_reclassify_token(parser);
1380 gotmemberof = false;
1382 parser->memberof = 0;
1384 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1385 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1387 /* a translatable string */
1391 parseerror(parser, "expected operator or end of statement, got constant");
1395 parser->lex->flags.noops = true;
1396 if (!parser_next(parser) || parser->tok != '(') {
1397 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1400 parser->lex->flags.noops = false;
1401 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1402 parseerror(parser, "expected a constant string in translatable-string extension");
1405 val = parser_const_string(parser, parser_tokval(parser), true);
1409 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1410 DEBUGSHUNTDO(con_out("push string\n"));
1412 if (!parser_next(parser) || parser->tok != ')') {
1413 parseerror(parser, "expected closing paren after translatable string");
1417 else if (parser->tok == TOKEN_IDENT)
1419 ast_expression *var;
1421 parseerror(parser, "expected operator or end of statement");
1426 if (opts.standard == COMPILER_GMQCC)
1428 if (parser->memberof == TYPE_ENTITY) {
1429 /* still get vars first since there could be a fieldpointer */
1430 var = parser_find_var(parser, parser_tokval(parser));
1432 var = parser_find_field(parser, parser_tokval(parser));
1434 else if (parser->memberof == TYPE_VECTOR)
1436 parseerror(parser, "TODO: implement effective vector member access");
1439 else if (parser->memberof) {
1440 parseerror(parser, "namespace for member not found");
1444 var = parser_find_var(parser, parser_tokval(parser));
1446 var = parser_find_var(parser, parser_tokval(parser));
1448 var = parser_find_field(parser, parser_tokval(parser));
1451 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1454 if (ast_istype(var, ast_value)) {
1455 ((ast_value*)var)->uses++;
1457 else if (ast_istype(var, ast_member)) {
1458 ast_member *mem = (ast_member*)var;
1459 if (ast_istype(mem->owner, ast_value))
1460 ((ast_value*)(mem->owner))->uses++;
1462 vec_push(sy.out, syexp(parser_ctx(parser), var));
1463 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1465 else if (parser->tok == TOKEN_FLOATCONST) {
1468 parseerror(parser, "expected operator or end of statement, got constant");
1472 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1475 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1476 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1478 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1481 parseerror(parser, "expected operator or end of statement, got constant");
1485 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1488 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1489 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1491 else if (parser->tok == TOKEN_STRINGCONST) {
1494 parseerror(parser, "expected operator or end of statement, got constant");
1498 val = parser_const_string(parser, parser_tokval(parser), false);
1501 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1502 DEBUGSHUNTDO(con_out("push string\n"));
1504 else if (parser->tok == TOKEN_VECTORCONST) {
1507 parseerror(parser, "expected operator or end of statement, got constant");
1511 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1514 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1515 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1516 parser_token(parser)->constval.v.x,
1517 parser_token(parser)->constval.v.y,
1518 parser_token(parser)->constval.v.z));
1520 else if (parser->tok == '(') {
1521 parseerror(parser, "internal error: '(' should be classified as operator");
1524 else if (parser->tok == '[') {
1525 parseerror(parser, "internal error: '[' should be classified as operator");
1528 else if (parser->tok == ')') {
1530 DEBUGSHUNTDO(con_out("do[op] )\n"));
1534 /* we do expect an operator next */
1535 /* closing an opening paren */
1536 if (!parser_close_paren(parser, &sy, false))
1538 if (vec_last(parser->pot) != POT_PAREN) {
1539 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1542 vec_pop(parser->pot);
1544 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1548 /* allowed for function calls */
1549 if (!parser_close_paren(parser, &sy, true))
1551 if (vec_last(parser->pot) != POT_PAREN) {
1552 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1555 vec_pop(parser->pot);
1559 else if (parser->tok == ']') {
1561 parseerror(parser, "operand expected");
1565 if (!parser_close_paren(parser, &sy, false))
1567 if (vec_last(parser->pot) != POT_PAREN) {
1568 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1571 vec_pop(parser->pot);
1574 else if (parser->tok == TOKEN_TYPENAME) {
1575 parseerror(parser, "unexpected typename");
1578 else if (parser->tok != TOKEN_OPERATOR) {
1580 parseerror(parser, "expected operator or end of statement");
1587 /* classify the operator */
1588 const oper_info *op;
1589 const oper_info *olast = NULL;
1591 for (o = 0; o < operator_count; ++o) {
1592 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1593 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1594 !strcmp(parser_tokval(parser), operators[o].op))
1599 if (o == operator_count) {
1600 /* no operator found... must be the end of the statement */
1603 /* found an operator */
1606 /* when declaring variables, a comma starts a new variable */
1607 if (op->id == opid1(',') && !parens && stopatcomma) {
1608 /* fixup the token */
1613 /* a colon without a pervious question mark cannot be a ternary */
1614 if (!ternaries && op->id == opid2(':','?')) {
1619 if (op->id == opid1(',')) {
1620 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1621 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1625 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1626 olast = &operators[vec_last(sy.ops).etype-1];
1629 (op->prec < olast->prec) ||
1630 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1632 if (!parser_sy_apply_operator(parser, &sy))
1634 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1635 olast = &operators[vec_last(sy.ops).etype-1];
1640 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1641 /* for gmqcc standard: open up the namespace of the previous type */
1642 ast_expression *prevex = vec_last(sy.out).out;
1644 parseerror(parser, "unexpected member operator");
1647 if (prevex->expression.vtype == TYPE_ENTITY)
1648 parser->memberof = TYPE_ENTITY;
1649 else if (prevex->expression.vtype == TYPE_VECTOR)
1650 parser->memberof = TYPE_VECTOR;
1652 parseerror(parser, "type error: type has no members");
1658 if (op->id == opid1('(')) {
1660 size_t sycount = vec_size(sy.out);
1661 DEBUGSHUNTDO(con_out("push [op] (\n"));
1662 ++parens; vec_push(parser->pot, POT_PAREN);
1663 /* we expected an operator, this is the function-call operator */
1664 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1666 ++parens; vec_push(parser->pot, POT_PAREN);
1667 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1668 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1671 } else if (op->id == opid1('[')) {
1673 parseerror(parser, "unexpected array subscript");
1676 ++parens; vec_push(parser->pot, POT_PAREN);
1677 /* push both the operator and the paren, this makes life easier */
1678 vec_push(sy.ops, syop(parser_ctx(parser), op));
1679 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1681 } else if (op->id == opid2('?',':')) {
1683 vec_push(sy.ops, syop(parser_ctx(parser), op));
1684 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1687 vec_push(parser->pot, POT_TERNARY1);
1688 } else if (op->id == opid2(':','?')) {
1689 if (!vec_size(parser->pot)) {
1690 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1693 if (vec_last(parser->pot) != POT_TERNARY1) {
1694 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1697 if (!parser_close_paren(parser, &sy, false))
1699 vec_push(sy.ops, syop(parser_ctx(parser), op));
1703 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1704 vec_push(sy.ops, syop(parser_ctx(parser), op));
1705 wantop = !!(op->flags & OP_SUFFIX);
1708 if (!parser_next(parser)) {
1711 if (parser->tok == ';' ||
1712 (!parens && parser->tok == ']'))
1718 while (vec_size(sy.ops)) {
1719 if (!parser_sy_apply_operator(parser, &sy))
1723 parser->lex->flags.noops = true;
1724 if (!vec_size(sy.out)) {
1725 parseerror(parser, "empty expression");
1728 expr = sy.out[0].out;
1731 DEBUGSHUNTDO(con_out("shunt done\n"));
1732 if (vec_size(parser->pot)) {
1733 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1736 vec_free(parser->pot);
1740 parser->lex->flags.noops = true;
1746 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1748 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1751 if (!parser_next(parser)) {
1758 static void parser_enterblock(parser_t *parser)
1760 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1761 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1762 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1763 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1764 vec_push(parser->_block_ctx, parser_ctx(parser));
1767 static bool parser_leaveblock(parser_t *parser)
1770 size_t locals, typedefs;
1772 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1773 parseerror(parser, "internal error: parser_leaveblock with no block");
1777 util_htdel(vec_last(parser->variables));
1778 vec_pop(parser->variables);
1779 if (!vec_size(parser->_blocklocals)) {
1780 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1784 locals = vec_last(parser->_blocklocals);
1785 vec_pop(parser->_blocklocals);
1786 while (vec_size(parser->_locals) != locals) {
1787 ast_expression *e = vec_last(parser->_locals);
1788 ast_value *v = (ast_value*)e;
1789 vec_pop(parser->_locals);
1790 if (ast_istype(e, ast_value) && !v->uses) {
1791 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name)) {
1798 typedefs = vec_last(parser->_blocktypedefs);
1799 while (vec_size(parser->_typedefs) != typedefs) {
1800 ast_delete(vec_last(parser->_typedefs));
1801 vec_pop(parser->_typedefs);
1803 util_htdel(vec_last(parser->typedefs));
1804 vec_pop(parser->typedefs);
1806 vec_pop(parser->_block_ctx);
1810 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1812 vec_push(parser->_locals, e);
1813 util_htset(vec_last(parser->variables), name, (void*)e);
1816 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1819 ast_expression *cond, *ontrue, *onfalse = NULL;
1822 lex_ctx ctx = parser_ctx(parser);
1824 (void)block; /* not touching */
1826 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1827 if (!parser_next(parser)) {
1828 parseerror(parser, "expected condition or 'not'");
1831 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
1833 if (!parser_next(parser)) {
1834 parseerror(parser, "expected condition in parenthesis");
1838 if (parser->tok != '(') {
1839 parseerror(parser, "expected 'if' condition in parenthesis");
1842 /* parse into the expression */
1843 if (!parser_next(parser)) {
1844 parseerror(parser, "expected 'if' condition after opening paren");
1847 /* parse the condition */
1848 cond = parse_expression_leave(parser, false);
1852 if (parser->tok != ')') {
1853 parseerror(parser, "expected closing paren after 'if' condition");
1857 /* parse into the 'then' branch */
1858 if (!parser_next(parser)) {
1859 parseerror(parser, "expected statement for on-true branch of 'if'");
1863 if (!parse_statement_or_block(parser, &ontrue)) {
1867 /* check for an else */
1868 if (!strcmp(parser_tokval(parser), "else")) {
1869 /* parse into the 'else' branch */
1870 if (!parser_next(parser)) {
1871 parseerror(parser, "expected on-false branch after 'else'");
1876 if (!parse_statement_or_block(parser, &onfalse)) {
1884 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1886 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1887 *out = (ast_expression*)ifthen;
1891 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1894 ast_expression *cond, *ontrue;
1896 lex_ctx ctx = parser_ctx(parser);
1898 (void)block; /* not touching */
1900 /* skip the 'while' and check for opening paren */
1901 if (!parser_next(parser) || parser->tok != '(') {
1902 parseerror(parser, "expected 'while' condition in parenthesis");
1905 /* parse into the expression */
1906 if (!parser_next(parser)) {
1907 parseerror(parser, "expected 'while' condition after opening paren");
1910 /* parse the condition */
1911 cond = parse_expression_leave(parser, false);
1915 if (parser->tok != ')') {
1916 parseerror(parser, "expected closing paren after 'while' condition");
1920 /* parse into the 'then' branch */
1921 if (!parser_next(parser)) {
1922 parseerror(parser, "expected while-loop body");
1926 if (!parse_statement_or_block(parser, &ontrue)) {
1931 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1932 *out = (ast_expression*)aloop;
1936 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1939 ast_expression *cond, *ontrue;
1941 lex_ctx ctx = parser_ctx(parser);
1943 (void)block; /* not touching */
1945 /* skip the 'do' and get the body */
1946 if (!parser_next(parser)) {
1947 parseerror(parser, "expected loop body");
1950 if (!parse_statement_or_block(parser, &ontrue))
1953 /* expect the "while" */
1954 if (parser->tok != TOKEN_KEYWORD ||
1955 strcmp(parser_tokval(parser), "while"))
1957 parseerror(parser, "expected 'while' and condition");
1962 /* skip the 'while' and check for opening paren */
1963 if (!parser_next(parser) || parser->tok != '(') {
1964 parseerror(parser, "expected 'while' condition in parenthesis");
1968 /* parse into the expression */
1969 if (!parser_next(parser)) {
1970 parseerror(parser, "expected 'while' condition after opening paren");
1974 /* parse the condition */
1975 cond = parse_expression_leave(parser, false);
1979 if (parser->tok != ')') {
1980 parseerror(parser, "expected closing paren after 'while' condition");
1986 if (!parser_next(parser) || parser->tok != ';') {
1987 parseerror(parser, "expected semicolon after condition");
1993 if (!parser_next(parser)) {
1994 parseerror(parser, "parse error");
2000 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
2001 *out = (ast_expression*)aloop;
2005 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2008 ast_expression *initexpr, *cond, *increment, *ontrue;
2012 lex_ctx ctx = parser_ctx(parser);
2014 parser_enterblock(parser);
2021 /* skip the 'while' and check for opening paren */
2022 if (!parser_next(parser) || parser->tok != '(') {
2023 parseerror(parser, "expected 'for' expressions in parenthesis");
2026 /* parse into the expression */
2027 if (!parser_next(parser)) {
2028 parseerror(parser, "expected 'for' initializer after opening paren");
2033 if (parser->tok == TOKEN_IDENT)
2034 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2036 if (typevar || parser->tok == TOKEN_TYPENAME) {
2037 if (opts.standard != COMPILER_GMQCC) {
2038 if (parsewarning(parser, WARN_EXTENSIONS,
2039 "current standard does not allow variable declarations in for-loop initializers"))
2042 if (!parse_variable(parser, block, true, CV_VAR, typevar, false))
2045 else if (parser->tok != ';')
2047 initexpr = parse_expression_leave(parser, false);
2052 /* move on to condition */
2053 if (parser->tok != ';') {
2054 parseerror(parser, "expected semicolon after for-loop initializer");
2057 if (!parser_next(parser)) {
2058 parseerror(parser, "expected for-loop condition");
2062 /* parse the condition */
2063 if (parser->tok != ';') {
2064 cond = parse_expression_leave(parser, false);
2069 /* move on to incrementor */
2070 if (parser->tok != ';') {
2071 parseerror(parser, "expected semicolon after for-loop initializer");
2074 if (!parser_next(parser)) {
2075 parseerror(parser, "expected for-loop condition");
2079 /* parse the incrementor */
2080 if (parser->tok != ')') {
2081 increment = parse_expression_leave(parser, false);
2084 if (!ast_side_effects(increment)) {
2085 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2091 if (parser->tok != ')') {
2092 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2095 /* parse into the 'then' branch */
2096 if (!parser_next(parser)) {
2097 parseerror(parser, "expected for-loop body");
2100 if (!parse_statement_or_block(parser, &ontrue))
2103 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
2104 *out = (ast_expression*)aloop;
2106 if (!parser_leaveblock(parser))
2110 if (initexpr) ast_delete(initexpr);
2111 if (cond) ast_delete(cond);
2112 if (increment) ast_delete(increment);
2113 (void)!parser_leaveblock(parser);
2117 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2119 ast_expression *exp = NULL;
2120 ast_return *ret = NULL;
2121 ast_value *expected = parser->function->vtype;
2123 lex_ctx ctx = parser_ctx(parser);
2125 (void)block; /* not touching */
2127 if (!parser_next(parser)) {
2128 parseerror(parser, "expected return expression");
2132 if (parser->tok != ';') {
2133 exp = parse_expression(parser, false);
2137 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2138 parseerror(parser, "return with invalid expression");
2141 ret = ast_return_new(exp->expression.node.context, exp);
2147 if (!parser_next(parser))
2148 parseerror(parser, "parse error");
2149 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2150 if (opts.standard != COMPILER_GMQCC)
2151 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2153 parseerror(parser, "return without value");
2155 ret = ast_return_new(ctx, NULL);
2157 *out = (ast_expression*)ret;
2161 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2163 lex_ctx ctx = parser_ctx(parser);
2165 (void)block; /* not touching */
2167 if (!parser_next(parser) || parser->tok != ';') {
2168 parseerror(parser, "expected semicolon");
2172 if (!parser_next(parser))
2173 parseerror(parser, "parse error");
2175 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
2179 /* returns true when it was a variable qualifier, false otherwise!
2180 * on error, cvq is set to CV_WRONG
2182 static bool parse_var_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref)
2184 bool had_const = false;
2185 bool had_var = false;
2186 bool had_noref = false;
2189 if (!strcmp(parser_tokval(parser), "const"))
2191 else if (!strcmp(parser_tokval(parser), "var"))
2193 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2195 else if (!strcmp(parser_tokval(parser), "noref"))
2197 else if (!had_const && !had_var && !had_noref) {
2202 if (!parser_next(parser))
2214 parseerror(parser, "parse error after variable qualifier");
2219 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2221 ast_expression *operand;
2224 ast_switch *switchnode;
2225 ast_switch_case swcase;
2230 lex_ctx ctx = parser_ctx(parser);
2232 (void)block; /* not touching */
2235 /* parse over the opening paren */
2236 if (!parser_next(parser) || parser->tok != '(') {
2237 parseerror(parser, "expected switch operand in parenthesis");
2241 /* parse into the expression */
2242 if (!parser_next(parser)) {
2243 parseerror(parser, "expected switch operand");
2246 /* parse the operand */
2247 operand = parse_expression_leave(parser, false);
2251 switchnode = ast_switch_new(ctx, operand);
2254 if (parser->tok != ')') {
2255 ast_delete(switchnode);
2256 parseerror(parser, "expected closing paren after 'switch' operand");
2260 /* parse over the opening paren */
2261 if (!parser_next(parser) || parser->tok != '{') {
2262 ast_delete(switchnode);
2263 parseerror(parser, "expected list of cases");
2267 if (!parser_next(parser)) {
2268 ast_delete(switchnode);
2269 parseerror(parser, "expected 'case' or 'default'");
2273 /* new block; allow some variables to be declared here */
2274 parser_enterblock(parser);
2277 if (parser->tok == TOKEN_IDENT)
2278 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2279 if (typevar || parser->tok == TOKEN_TYPENAME) {
2280 if (!parse_variable(parser, block, false, CV_NONE, typevar, false)) {
2281 ast_delete(switchnode);
2286 if (parse_var_qualifiers(parser, true, &cvq, &noref))
2288 if (cvq == CV_WRONG) {
2289 ast_delete(switchnode);
2292 if (!parse_variable(parser, block, false, cvq, NULL, noref)) {
2293 ast_delete(switchnode);
2302 while (parser->tok != '}') {
2303 ast_block *caseblock;
2305 if (parser->tok != TOKEN_KEYWORD) {
2306 ast_delete(switchnode);
2307 parseerror(parser, "expected 'case' or 'default'");
2310 if (!strcmp(parser_tokval(parser), "case")) {
2311 if (!parser_next(parser)) {
2312 ast_delete(switchnode);
2313 parseerror(parser, "expected expression for case");
2316 swcase.value = parse_expression_leave(parser, false);
2317 if (!swcase.value) {
2318 ast_delete(switchnode);
2319 parseerror(parser, "expected expression for case");
2322 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2323 opval = (ast_value*)swcase.value;
2324 if (!ast_istype(swcase.value, ast_value)) { /* || opval->cvq != CV_CONST) { */
2325 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2331 else if (!strcmp(parser_tokval(parser), "default")) {
2332 swcase.value = NULL;
2333 if (!parser_next(parser)) {
2334 ast_delete(switchnode);
2335 parseerror(parser, "expected colon");
2340 /* Now the colon and body */
2341 if (parser->tok != ':') {
2342 if (swcase.value) ast_unref(swcase.value);
2343 ast_delete(switchnode);
2344 parseerror(parser, "expected colon");
2348 if (!parser_next(parser)) {
2349 if (swcase.value) ast_unref(swcase.value);
2350 ast_delete(switchnode);
2351 parseerror(parser, "expected statements or case");
2354 caseblock = ast_block_new(parser_ctx(parser));
2356 if (swcase.value) ast_unref(swcase.value);
2357 ast_delete(switchnode);
2360 swcase.code = (ast_expression*)caseblock;
2361 vec_push(switchnode->cases, swcase);
2363 ast_expression *expr;
2364 if (parser->tok == '}')
2366 if (parser->tok == TOKEN_KEYWORD) {
2367 if (!strcmp(parser_tokval(parser), "case") ||
2368 !strcmp(parser_tokval(parser), "default"))
2373 if (!parse_statement(parser, caseblock, &expr, true)) {
2374 ast_delete(switchnode);
2379 if (!ast_block_add_expr(caseblock, expr)) {
2380 ast_delete(switchnode);
2386 parser_leaveblock(parser);
2389 if (parser->tok != '}') {
2390 ast_delete(switchnode);
2391 parseerror(parser, "expected closing paren of case list");
2394 if (!parser_next(parser)) {
2395 ast_delete(switchnode);
2396 parseerror(parser, "parse error after switch");
2399 *out = (ast_expression*)switchnode;
2403 static bool parse_goto(parser_t *parser, ast_expression **out)
2408 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2409 parseerror(parser, "expected label name after `goto`");
2413 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
2415 for (i = 0; i < vec_size(parser->labels); ++i) {
2416 if (!strcmp(parser->labels[i]->name, parser_tokval(parser))) {
2417 ast_goto_set_label(gt, parser->labels[i]);
2421 if (i == vec_size(parser->labels))
2422 vec_push(parser->gotos, gt);
2424 if (!parser_next(parser) || parser->tok != ';') {
2425 parseerror(parser, "semicolon expected after goto label");
2428 if (!parser_next(parser)) {
2429 parseerror(parser, "parse error after goto");
2433 *out = (ast_expression*)gt;
2437 static bool parse_skipwhite(parser_t *parser)
2440 if (!parser_next(parser))
2442 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
2443 return parser->tok < TOKEN_ERROR;
2446 static bool parse_eol(parser_t *parser)
2448 if (!parse_skipwhite(parser))
2450 return parser->tok == TOKEN_EOL;
2453 static bool parse_pragma_do(parser_t *parser)
2455 if (!parser_next(parser) ||
2456 parser->tok != TOKEN_IDENT ||
2457 strcmp(parser_tokval(parser), "pragma"))
2459 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
2462 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
2463 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
2467 if (!strcmp(parser_tokval(parser), "noref")) {
2468 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
2469 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
2472 parser->noref = !!parser_token(parser)->constval.i;
2473 if (!parse_eol(parser)) {
2474 parseerror(parser, "parse error after `noref` pragma");
2480 parseerror(parser, "unrecognized hash-keyword: `%s`", parser_tokval(parser));
2487 static bool parse_pragma(parser_t *parser)
2490 parser->lex->flags.preprocessing = true;
2491 parser->lex->flags.mergelines = true;
2492 rv = parse_pragma_do(parser);
2493 if (parser->tok != TOKEN_EOL) {
2494 parseerror(parser, "junk after pragma");
2497 parser->lex->flags.preprocessing = false;
2498 parser->lex->flags.mergelines = false;
2499 if (!parser_next(parser)) {
2500 parseerror(parser, "parse error after pragma");
2506 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2510 ast_value *typevar = NULL;
2514 if (parser->tok == TOKEN_IDENT)
2515 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2517 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2519 /* local variable */
2521 parseerror(parser, "cannot declare a variable from here");
2524 if (opts.standard == COMPILER_QCC) {
2525 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2528 if (!parse_variable(parser, block, false, CV_NONE, typevar, false))
2532 else if (parse_var_qualifiers(parser, !!block, &cvq, &noref))
2534 if (cvq == CV_WRONG)
2536 return parse_variable(parser, block, true, cvq, NULL, noref);
2538 else if (parser->tok == TOKEN_KEYWORD)
2540 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
2545 if (!parser_next(parser)) {
2546 parseerror(parser, "parse error after __builtin_debug_printtype");
2550 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
2552 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
2553 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
2554 if (!parser_next(parser)) {
2555 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
2561 if (!parse_statement(parser, block, out, allow_cases))
2564 con_out("__builtin_debug_printtype: got no output node\n");
2567 ast_type_to_string(*out, ty, sizeof(ty));
2568 con_out("__builtin_debug_printtype: `%s`\n", ty);
2573 else if (!strcmp(parser_tokval(parser), "return"))
2575 return parse_return(parser, block, out);
2577 else if (!strcmp(parser_tokval(parser), "if"))
2579 return parse_if(parser, block, out);
2581 else if (!strcmp(parser_tokval(parser), "while"))
2583 return parse_while(parser, block, out);
2585 else if (!strcmp(parser_tokval(parser), "do"))
2587 return parse_dowhile(parser, block, out);
2589 else if (!strcmp(parser_tokval(parser), "for"))
2591 if (opts.standard == COMPILER_QCC) {
2592 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2595 return parse_for(parser, block, out);
2597 else if (!strcmp(parser_tokval(parser), "break"))
2599 return parse_break_continue(parser, block, out, false);
2601 else if (!strcmp(parser_tokval(parser), "continue"))
2603 return parse_break_continue(parser, block, out, true);
2605 else if (!strcmp(parser_tokval(parser), "switch"))
2607 return parse_switch(parser, block, out);
2609 else if (!strcmp(parser_tokval(parser), "case") ||
2610 !strcmp(parser_tokval(parser), "default"))
2613 parseerror(parser, "unexpected 'case' label");
2618 else if (!strcmp(parser_tokval(parser), "goto"))
2620 return parse_goto(parser, out);
2622 else if (!strcmp(parser_tokval(parser), "typedef"))
2624 if (!parser_next(parser)) {
2625 parseerror(parser, "expected type definition after 'typedef'");
2628 return parse_typedef(parser);
2630 parseerror(parser, "Unexpected keyword");
2633 else if (parser->tok == '{')
2636 inner = parse_block(parser);
2639 *out = (ast_expression*)inner;
2642 else if (parser->tok == ':')
2646 if (!parser_next(parser)) {
2647 parseerror(parser, "expected label name");
2650 if (parser->tok != TOKEN_IDENT) {
2651 parseerror(parser, "label must be an identifier");
2654 label = ast_label_new(parser_ctx(parser), parser_tokval(parser));
2657 vec_push(parser->labels, label);
2658 *out = (ast_expression*)label;
2659 if (!parser_next(parser)) {
2660 parseerror(parser, "parse error after label");
2663 for (i = 0; i < vec_size(parser->gotos); ++i) {
2664 if (!strcmp(parser->gotos[i]->name, label->name)) {
2665 ast_goto_set_label(parser->gotos[i], label);
2666 vec_remove(parser->gotos, i, 1);
2672 else if (parser->tok == ';')
2674 if (!parser_next(parser)) {
2675 parseerror(parser, "parse error after empty statement");
2682 ast_expression *exp = parse_expression(parser, false);
2686 if (!ast_side_effects(exp)) {
2687 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2694 static bool parse_block_into(parser_t *parser, ast_block *block)
2698 parser_enterblock(parser);
2700 if (!parser_next(parser)) { /* skip the '{' */
2701 parseerror(parser, "expected function body");
2705 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2707 ast_expression *expr = NULL;
2708 if (parser->tok == '}')
2711 if (!parse_statement(parser, block, &expr, false)) {
2712 /* parseerror(parser, "parse error"); */
2718 if (!ast_block_add_expr(block, expr)) {
2725 if (parser->tok != '}') {
2728 (void)parser_next(parser);
2732 if (!parser_leaveblock(parser))
2734 return retval && !!block;
2737 static ast_block* parse_block(parser_t *parser)
2740 block = ast_block_new(parser_ctx(parser));
2743 if (!parse_block_into(parser, block)) {
2744 ast_block_delete(block);
2750 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
2752 if (parser->tok == '{') {
2753 *out = (ast_expression*)parse_block(parser);
2756 return parse_statement(parser, NULL, out, false);
2759 static bool create_vector_members(ast_value *var, ast_member **me)
2762 size_t len = strlen(var->name);
2764 for (i = 0; i < 3; ++i) {
2765 char *name = mem_a(len+3);
2766 memcpy(name, var->name, len);
2768 name[len+1] = 'x'+i;
2770 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
2779 do { ast_member_delete(me[--i]); } while(i);
2783 static bool parse_function_body(parser_t *parser, ast_value *var)
2785 ast_block *block = NULL;
2790 ast_expression *framenum = NULL;
2791 ast_expression *nextthink = NULL;
2792 /* None of the following have to be deleted */
2793 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2794 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2795 bool has_frame_think;
2799 has_frame_think = false;
2800 old = parser->function;
2802 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
2803 parseerror(parser, "gotos/labels leaking");
2807 if (var->expression.variadic) {
2808 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2809 "variadic function with implementation will not be able to access additional parameters"))
2815 if (parser->tok == '[') {
2816 /* got a frame definition: [ framenum, nextthink ]
2817 * this translates to:
2818 * self.frame = framenum;
2819 * self.nextthink = time + 0.1;
2820 * self.think = nextthink;
2824 fld_think = parser_find_field(parser, "think");
2825 fld_nextthink = parser_find_field(parser, "nextthink");
2826 fld_frame = parser_find_field(parser, "frame");
2827 if (!fld_think || !fld_nextthink || !fld_frame) {
2828 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2829 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2832 gbl_time = parser_find_global(parser, "time");
2833 gbl_self = parser_find_global(parser, "self");
2834 if (!gbl_time || !gbl_self) {
2835 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2836 parseerror(parser, "please declare the following globals: `time`, `self`");
2840 if (!parser_next(parser))
2843 framenum = parse_expression_leave(parser, true);
2845 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2848 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
2849 ast_unref(framenum);
2850 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2854 if (parser->tok != ',') {
2855 ast_unref(framenum);
2856 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2857 parseerror(parser, "Got a %i\n", parser->tok);
2861 if (!parser_next(parser)) {
2862 ast_unref(framenum);
2866 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2868 /* qc allows the use of not-yet-declared functions here
2869 * - this automatically creates a prototype */
2870 ast_value *thinkfunc;
2871 ast_expression *functype = fld_think->expression.next;
2873 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2874 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2875 ast_unref(framenum);
2876 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2880 if (!parser_next(parser)) {
2881 ast_unref(framenum);
2882 ast_delete(thinkfunc);
2886 vec_push(parser->globals, (ast_expression*)thinkfunc);
2887 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
2888 nextthink = (ast_expression*)thinkfunc;
2891 nextthink = parse_expression_leave(parser, true);
2893 ast_unref(framenum);
2894 parseerror(parser, "expected a think-function in [frame,think] notation");
2899 if (!ast_istype(nextthink, ast_value)) {
2900 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2904 if (retval && parser->tok != ']') {
2905 parseerror(parser, "expected closing `]` for [frame,think] notation");
2909 if (retval && !parser_next(parser)) {
2913 if (retval && parser->tok != '{') {
2914 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2919 ast_unref(nextthink);
2920 ast_unref(framenum);
2924 has_frame_think = true;
2927 block = ast_block_new(parser_ctx(parser));
2929 parseerror(parser, "failed to allocate block");
2930 if (has_frame_think) {
2931 ast_unref(nextthink);
2932 ast_unref(framenum);
2937 if (has_frame_think) {
2939 ast_expression *self_frame;
2940 ast_expression *self_nextthink;
2941 ast_expression *self_think;
2942 ast_expression *time_plus_1;
2943 ast_store *store_frame;
2944 ast_store *store_nextthink;
2945 ast_store *store_think;
2947 ctx = parser_ctx(parser);
2948 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2949 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2950 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2952 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2953 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2955 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2956 if (self_frame) ast_delete(self_frame);
2957 if (self_nextthink) ast_delete(self_nextthink);
2958 if (self_think) ast_delete(self_think);
2959 if (time_plus_1) ast_delete(time_plus_1);
2965 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2966 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2967 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2970 ast_delete(self_frame);
2973 if (!store_nextthink) {
2974 ast_delete(self_nextthink);
2978 ast_delete(self_think);
2982 if (store_frame) ast_delete(store_frame);
2983 if (store_nextthink) ast_delete(store_nextthink);
2984 if (store_think) ast_delete(store_think);
2987 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
2988 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
2989 !ast_block_add_expr(block, (ast_expression*)store_think))
2996 parseerror(parser, "failed to generate code for [frame,think]");
2997 ast_unref(nextthink);
2998 ast_unref(framenum);
3004 parser_enterblock(parser);
3006 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3008 ast_value *param = var->expression.params[parami];
3011 if (param->expression.vtype != TYPE_VECTOR &&
3012 (param->expression.vtype != TYPE_FIELD ||
3013 param->expression.next->expression.vtype != TYPE_VECTOR))
3018 if (!create_vector_members(param, me)) {
3019 ast_block_delete(block);
3023 for (e = 0; e < 3; ++e) {
3024 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3025 ast_block_collect(block, (ast_expression*)me[e]);
3029 func = ast_function_new(ast_ctx(var), var->name, var);
3031 parseerror(parser, "failed to allocate function for `%s`", var->name);
3032 ast_block_delete(block);
3035 vec_push(parser->functions, func);
3037 parser->function = func;
3038 if (!parse_block_into(parser, block)) {
3039 ast_block_delete(block);
3043 vec_push(func->blocks, block);
3045 parser->function = old;
3046 if (!parser_leaveblock(parser))
3048 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3049 parseerror(parser, "internal error: local scopes left");
3053 if (parser->tok == ';')
3054 return parser_next(parser);
3055 else if (opts.standard == COMPILER_QCC)
3056 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3060 vec_pop(parser->functions);
3061 ast_function_delete(func);
3062 var->constval.vfunc = NULL;
3065 (void)!parser_leaveblock(parser);
3066 parser->function = old;
3070 static ast_expression *array_accessor_split(
3075 ast_expression *left,
3076 ast_expression *right
3082 lex_ctx ctx = ast_ctx(array);
3084 if (!left || !right) {
3085 if (left) ast_delete(left);
3086 if (right) ast_delete(right);
3090 cmp = ast_binary_new(ctx, INSTR_LT,
3091 (ast_expression*)index,
3092 (ast_expression*)parser_const_float(parser, middle));
3096 parseerror(parser, "internal error: failed to create comparison for array setter");
3100 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3102 ast_delete(cmp); /* will delete left and right */
3103 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3107 return (ast_expression*)ifthen;
3110 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3112 lex_ctx ctx = ast_ctx(array);
3114 if (from+1 == afterend) {
3115 /* set this value */
3118 ast_array_index *subscript;
3120 int assignop = type_store_instr[value->expression.vtype];
3122 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3123 assignop = INSTR_STORE_V;
3125 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3129 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3131 ast_delete(subscript);
3135 block = ast_block_new(ctx);
3141 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3146 ret = ast_return_new(ctx, NULL);
3152 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3157 return (ast_expression*)block;
3159 ast_expression *left, *right;
3160 size_t diff = afterend - from;
3161 size_t middle = from + diff/2;
3162 left = array_setter_node(parser, array, index, value, from, middle);
3163 right = array_setter_node(parser, array, index, value, middle, afterend);
3164 return array_accessor_split(parser, array, index, middle, left, right);
3168 static ast_expression *array_field_setter_node(
3177 lex_ctx ctx = ast_ctx(array);
3179 if (from+1 == afterend) {
3180 /* set this value */
3183 ast_entfield *entfield;
3184 ast_array_index *subscript;
3186 int assignop = type_storep_instr[value->expression.vtype];
3188 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3189 assignop = INSTR_STOREP_V;
3191 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3195 entfield = ast_entfield_new_force(ctx,
3196 (ast_expression*)entity,
3197 (ast_expression*)subscript,
3198 (ast_expression*)subscript);
3200 ast_delete(subscript);
3204 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3206 ast_delete(entfield);
3210 block = ast_block_new(ctx);
3216 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3221 ret = ast_return_new(ctx, NULL);
3227 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3232 return (ast_expression*)block;
3234 ast_expression *left, *right;
3235 size_t diff = afterend - from;
3236 size_t middle = from + diff/2;
3237 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3238 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3239 return array_accessor_split(parser, array, index, middle, left, right);
3243 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3245 lex_ctx ctx = ast_ctx(array);
3247 if (from+1 == afterend) {
3249 ast_array_index *subscript;
3251 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3255 ret = ast_return_new(ctx, (ast_expression*)subscript);
3257 ast_delete(subscript);
3261 return (ast_expression*)ret;
3263 ast_expression *left, *right;
3264 size_t diff = afterend - from;
3265 size_t middle = from + diff/2;
3266 left = array_getter_node(parser, array, index, from, middle);
3267 right = array_getter_node(parser, array, index, middle, afterend);
3268 return array_accessor_split(parser, array, index, middle, left, right);
3272 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3274 ast_function *func = NULL;
3275 ast_value *fval = NULL;
3276 ast_block *body = NULL;
3278 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3280 parseerror(parser, "failed to create accessor function value");
3284 func = ast_function_new(ast_ctx(array), funcname, fval);
3287 parseerror(parser, "failed to create accessor function node");
3291 body = ast_block_new(ast_ctx(array));
3293 parseerror(parser, "failed to create block for array accessor");
3299 vec_push(func->blocks, body);
3302 vec_push(parser->accessors, fval);
3307 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
3309 ast_expression *root = NULL;
3310 ast_value *index = NULL;
3311 ast_value *value = NULL;
3315 if (!ast_istype(array->expression.next, ast_value)) {
3316 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3320 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3322 func = fval->constval.vfunc;
3323 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3325 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3326 value = ast_value_copy((ast_value*)array->expression.next);
3328 if (!index || !value) {
3329 parseerror(parser, "failed to create locals for array accessor");
3332 (void)!ast_value_set_name(value, "value"); /* not important */
3333 vec_push(fval->expression.params, index);
3334 vec_push(fval->expression.params, value);
3336 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
3338 parseerror(parser, "failed to build accessor search tree");
3342 array->setter = fval;
3343 return ast_block_add_expr(func->blocks[0], root);
3345 if (index) ast_delete(index);
3346 if (value) ast_delete(value);
3347 if (root) ast_delete(root);
3353 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
3355 ast_expression *root = NULL;
3356 ast_value *entity = NULL;
3357 ast_value *index = NULL;
3358 ast_value *value = NULL;
3362 if (!ast_istype(array->expression.next, ast_value)) {
3363 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3367 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3369 func = fval->constval.vfunc;
3370 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3372 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
3373 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3374 value = ast_value_copy((ast_value*)array->expression.next);
3375 if (!entity || !index || !value) {
3376 parseerror(parser, "failed to create locals for array accessor");
3379 (void)!ast_value_set_name(value, "value"); /* not important */
3380 vec_push(fval->expression.params, entity);
3381 vec_push(fval->expression.params, index);
3382 vec_push(fval->expression.params, value);
3384 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3386 parseerror(parser, "failed to build accessor search tree");
3390 array->setter = fval;
3391 return ast_block_add_expr(func->blocks[0], root);
3393 if (entity) ast_delete(entity);
3394 if (index) ast_delete(index);
3395 if (value) ast_delete(value);
3396 if (root) ast_delete(root);
3402 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3404 ast_expression *root = NULL;
3405 ast_value *index = NULL;
3409 /* NOTE: checking array->expression.next rather than elemtype since
3410 * for fields elemtype is a temporary fieldtype.
3412 if (!ast_istype(array->expression.next, ast_value)) {
3413 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3417 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3419 func = fval->constval.vfunc;
3420 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3422 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3425 parseerror(parser, "failed to create locals for array accessor");
3428 vec_push(fval->expression.params, index);
3430 root = array_getter_node(parser, array, index, 0, array->expression.count);
3432 parseerror(parser, "failed to build accessor search tree");
3436 array->getter = fval;
3437 return ast_block_add_expr(func->blocks[0], root);
3439 if (index) ast_delete(index);
3440 if (root) ast_delete(root);
3446 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3447 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3455 bool variadic = false;
3457 ctx = parser_ctx(parser);
3459 /* for the sake of less code we parse-in in this function */
3460 if (!parser_next(parser)) {
3461 parseerror(parser, "expected parameter list");
3467 /* parse variables until we hit a closing paren */
3468 while (parser->tok != ')') {
3470 /* there must be commas between them */
3471 if (parser->tok != ',') {
3472 parseerror(parser, "expected comma or end of parameter list");
3475 if (!parser_next(parser)) {
3476 parseerror(parser, "expected parameter");
3482 if (parser->tok == TOKEN_DOTS) {
3483 /* '...' indicates a varargs function */
3485 if (!parser_next(parser)) {
3486 parseerror(parser, "expected parameter");
3489 if (parser->tok != ')') {
3490 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3496 /* for anything else just parse a typename */
3497 param = parse_typename(parser, NULL, NULL);
3500 vec_push(params, param);
3501 if (param->expression.vtype >= TYPE_VARIANT) {
3502 char typename[1024];
3503 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
3504 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
3510 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
3514 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
3515 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3518 if (!parser_next(parser)) {
3519 parseerror(parser, "parse error after typename");
3523 /* now turn 'var' into a function type */
3524 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3525 fval->expression.next = (ast_expression*)var;
3526 fval->expression.variadic = variadic;
3529 var->expression.params = params;
3536 for (i = 0; i < vec_size(params); ++i)
3537 ast_delete(params[i]);
3542 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3544 ast_expression *cexp;
3545 ast_value *cval, *tmp;
3548 ctx = parser_ctx(parser);
3550 if (!parser_next(parser)) {
3552 parseerror(parser, "expected array-size");
3556 cexp = parse_expression_leave(parser, true);
3558 if (!cexp || !ast_istype(cexp, ast_value)) {
3562 parseerror(parser, "expected array-size as constant positive integer");
3565 cval = (ast_value*)cexp;
3567 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3568 tmp->expression.next = (ast_expression*)var;
3571 if (cval->expression.vtype == TYPE_INTEGER)
3572 tmp->expression.count = cval->constval.vint;
3573 else if (cval->expression.vtype == TYPE_FLOAT)
3574 tmp->expression.count = cval->constval.vfloat;
3578 parseerror(parser, "array-size must be a positive integer constant");
3583 if (parser->tok != ']') {
3585 parseerror(parser, "expected ']' after array-size");
3588 if (!parser_next(parser)) {
3590 parseerror(parser, "error after parsing array size");
3596 /* Parse a complete typename.
3597 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3598 * but when parsing variables separated by comma
3599 * 'storebase' should point to where the base-type should be kept.
3600 * The base type makes up every bit of type information which comes *before* the
3603 * The following will be parsed in its entirety:
3605 * The 'basetype' in this case is 'void()'
3606 * and if there's a comma after it, say:
3608 * then the type-information 'void()' can be stored in 'storebase'
3610 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3612 ast_value *var, *tmp;
3615 const char *name = NULL;
3616 bool isfield = false;
3617 bool wasarray = false;
3618 size_t morefields = 0;
3620 ctx = parser_ctx(parser);
3622 /* types may start with a dot */
3623 if (parser->tok == '.') {
3625 /* if we parsed a dot we need a typename now */
3626 if (!parser_next(parser)) {
3627 parseerror(parser, "expected typename for field definition");
3631 /* Further dots are handled seperately because they won't be part of the
3634 while (parser->tok == '.') {
3636 if (!parser_next(parser)) {
3637 parseerror(parser, "expected typename for field definition");
3642 if (parser->tok == TOKEN_IDENT)
3643 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
3644 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
3645 parseerror(parser, "expected typename");
3649 /* generate the basic type value */
3650 if (cached_typedef) {
3651 var = ast_value_copy(cached_typedef);
3652 ast_value_set_name(var, "<type(from_def)>");
3654 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3656 for (; morefields; --morefields) {
3657 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
3658 tmp->expression.next = (ast_expression*)var;
3662 /* do not yet turn into a field - remember:
3663 * .void() foo; is a field too
3664 * .void()() foo; is a function
3668 if (!parser_next(parser)) {
3670 parseerror(parser, "parse error after typename");
3674 /* an opening paren now starts the parameter-list of a function
3675 * this is where original-QC has parameter lists.
3676 * We allow a single parameter list here.
3677 * Much like fteqcc we don't allow `float()() x`
3679 if (parser->tok == '(') {
3680 var = parse_parameter_list(parser, var);
3685 /* store the base if requested */
3687 *storebase = ast_value_copy(var);
3689 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3690 tmp->expression.next = (ast_expression*)*storebase;
3695 /* there may be a name now */
3696 if (parser->tok == TOKEN_IDENT) {
3697 name = util_strdup(parser_tokval(parser));
3699 if (!parser_next(parser)) {
3701 parseerror(parser, "error after variable or field declaration");
3706 /* now this may be an array */
3707 if (parser->tok == '[') {
3709 var = parse_arraysize(parser, var);
3714 /* This is the point where we can turn it into a field */
3716 /* turn it into a field if desired */
3717 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3718 tmp->expression.next = (ast_expression*)var;
3722 /* now there may be function parens again */
3723 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
3724 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3725 if (parser->tok == '(' && wasarray)
3726 parseerror(parser, "arrays as part of a return type is not supported");
3727 while (parser->tok == '(') {
3728 var = parse_parameter_list(parser, var);
3737 /* finally name it */
3739 if (!ast_value_set_name(var, name)) {
3741 parseerror(parser, "internal error: failed to set name");
3744 /* free the name, ast_value_set_name duplicates */
3751 static bool parse_typedef(parser_t *parser)
3753 ast_value *typevar, *oldtype;
3754 ast_expression *old;
3756 typevar = parse_typename(parser, NULL, NULL);
3761 if ( (old = parser_find_var(parser, typevar->name)) ) {
3762 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
3763 " -> `%s` has been declared here: %s:%i",
3764 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
3765 ast_delete(typevar);
3769 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
3770 parseerror(parser, "type `%s` has already been declared here: %s:%i",
3771 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
3772 ast_delete(typevar);
3776 vec_push(parser->_typedefs, typevar);
3777 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
3779 if (parser->tok != ';') {
3780 parseerror(parser, "expected semicolon after typedef");
3783 if (!parser_next(parser)) {
3784 parseerror(parser, "parse error after typedef");
3791 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref)
3795 ast_expression *old;
3799 ast_value *basetype = NULL;
3801 bool isparam = false;
3802 bool isvector = false;
3803 bool cleanvar = true;
3804 bool wasarray = false;
3808 /* get the first complete variable */
3809 var = parse_typename(parser, &basetype, cached_typedef);
3812 ast_delete(basetype);
3820 /* Part 0: finish the type */
3821 if (parser->tok == '(') {
3822 if (opts.standard == COMPILER_QCC)
3823 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3824 var = parse_parameter_list(parser, var);
3830 /* we only allow 1-dimensional arrays */
3831 if (parser->tok == '[') {
3833 var = parse_arraysize(parser, var);
3839 if (parser->tok == '(' && wasarray) {
3840 parseerror(parser, "arrays as part of a return type is not supported");
3841 /* we'll still parse the type completely for now */
3843 /* for functions returning functions */
3844 while (parser->tok == '(') {
3845 if (opts.standard == COMPILER_QCC)
3846 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3847 var = parse_parameter_list(parser, var);
3854 var->cvq = qualifier;
3855 /* in a noref section we simply bump the usecount */
3856 if (noref || parser->noref)
3860 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3861 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3862 * is then filled with the previous definition and the parameter-names replaced.
3865 /* Deal with end_sys_ vars */
3867 if (!strcmp(var->name, "end_sys_globals")) {
3869 parser->crc_globals = vec_size(parser->globals);
3872 else if (!strcmp(var->name, "end_sys_fields")) {
3874 parser->crc_fields = vec_size(parser->fields);
3877 if (was_end && var->expression.vtype == TYPE_FIELD) {
3878 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3879 "global '%s' hint should not be a field",
3880 parser_tokval(parser)))
3887 if (!nofields && var->expression.vtype == TYPE_FIELD)
3889 /* deal with field declarations */
3890 old = parser_find_field(parser, var->name);
3892 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3893 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3902 parseerror(parser, "field `%s` already declared here: %s:%i",
3903 var->name, ast_ctx(old).file, ast_ctx(old).line);
3908 if (opts.standard == COMPILER_QCC &&
3909 (old = parser_find_global(parser, var->name)))
3911 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3912 parseerror(parser, "field `%s` already declared here: %s:%i",
3913 var->name, ast_ctx(old).file, ast_ctx(old).line);
3920 /* deal with other globals */
3921 old = parser_find_global(parser, var->name);
3922 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3924 /* This is a function which had a prototype */
3925 if (!ast_istype(old, ast_value)) {
3926 parseerror(parser, "internal error: prototype is not an ast_value");
3930 proto = (ast_value*)old;
3931 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3932 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3934 ast_ctx(proto).file, ast_ctx(proto).line);
3938 /* we need the new parameter-names */
3939 for (i = 0; i < vec_size(proto->expression.params); ++i)
3940 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
3948 if (opts.standard == COMPILER_GMQCC) {
3949 parseerror(parser, "global `%s` already declared here: %s:%i",
3950 var->name, ast_ctx(old).file, ast_ctx(old).line);
3954 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
3955 "global `%s` already declared here: %s:%i",
3956 var->name, ast_ctx(old).file, ast_ctx(old).line))
3961 proto = (ast_value*)old;
3962 if (!ast_istype(old, ast_value)) {
3963 parseerror(parser, "internal error: not an ast_value");
3972 if (opts.standard == COMPILER_QCC &&
3973 (old = parser_find_field(parser, var->name)))
3975 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3976 parseerror(parser, "global `%s` already declared here: %s:%i",
3977 var->name, ast_ctx(old).file, ast_ctx(old).line);
3984 else /* it's not a global */
3986 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
3987 if (old && !isparam) {
3988 parseerror(parser, "local `%s` already declared here: %s:%i",
3989 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3993 old = parser_find_local(parser, var->name, 0, &isparam);
3994 if (old && isparam) {
3995 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
3996 "local `%s` is shadowing a parameter", var->name))
3998 parseerror(parser, "local `%s` already declared here: %s:%i",
3999 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4003 if (opts.standard != COMPILER_GMQCC) {
4012 * Create the global/local, and deal with vector types.
4015 if (var->expression.vtype == TYPE_VECTOR)
4017 else if (var->expression.vtype == TYPE_FIELD &&
4018 var->expression.next->expression.vtype == TYPE_VECTOR)
4022 if (!create_vector_members(var, me)) {
4029 /* deal with global variables, fields, functions */
4030 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4031 var->isfield = true;
4032 vec_push(parser->fields, (ast_expression*)var);
4033 util_htset(parser->htfields, var->name, var);
4035 for (i = 0; i < 3; ++i) {
4036 vec_push(parser->fields, (ast_expression*)me[i]);
4037 util_htset(parser->htfields, me[i]->name, me[i]);
4042 vec_push(parser->globals, (ast_expression*)var);
4043 util_htset(parser->htglobals, var->name, var);
4045 for (i = 0; i < 3; ++i) {
4046 vec_push(parser->globals, (ast_expression*)me[i]);
4047 util_htset(parser->htglobals, me[i]->name, me[i]);
4052 vec_push(localblock->locals, var);
4053 parser_addlocal(parser, var->name, (ast_expression*)var);
4055 for (i = 0; i < 3; ++i) {
4056 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4057 ast_block_collect(localblock, (ast_expression*)me[i]);
4063 me[0] = me[1] = me[2] = NULL;
4068 if (var->expression.vtype == TYPE_ARRAY) {
4070 snprintf(name, sizeof(name), "%s##SET", var->name);
4071 if (!parser_create_array_setter(parser, var, name))
4073 snprintf(name, sizeof(name), "%s##GET", var->name);
4074 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4077 else if (!localblock && !nofields &&
4078 var->expression.vtype == TYPE_FIELD &&
4079 var->expression.next->expression.vtype == TYPE_ARRAY)
4082 ast_expression *telem;
4084 ast_value *array = (ast_value*)var->expression.next;
4086 if (!ast_istype(var->expression.next, ast_value)) {
4087 parseerror(parser, "internal error: field element type must be an ast_value");
4091 snprintf(name, sizeof(name), "%s##SETF", var->name);
4092 if (!parser_create_array_field_setter(parser, array, name))
4095 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4096 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4097 tfield->expression.next = telem;
4098 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4099 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4107 if (parser->tok == ';') {
4108 ast_delete(basetype);
4109 if (!parser_next(parser)) {
4110 parseerror(parser, "error after variable declaration");
4116 if (parser->tok == ',')
4120 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4123 parseerror(parser, "missing comma or semicolon while parsing variables");
4127 if (localblock && opts.standard == COMPILER_QCC) {
4128 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4129 "initializing expression turns variable `%s` into a constant in this standard",
4136 if (parser->tok != '{') {
4137 if (parser->tok != '=') {
4138 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4142 if (!parser_next(parser)) {
4143 parseerror(parser, "error parsing initializer");
4147 else if (opts.standard == COMPILER_QCC) {
4148 parseerror(parser, "expected '=' before function body in this standard");
4151 if (parser->tok == '#') {
4152 ast_function *func = NULL;
4155 parseerror(parser, "cannot declare builtins within functions");
4158 if (var->expression.vtype != TYPE_FUNCTION) {
4159 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4162 if (!parser_next(parser)) {
4163 parseerror(parser, "expected builtin number");
4166 if (parser->tok != TOKEN_INTCONST) {
4167 parseerror(parser, "builtin number must be an integer constant");
4170 if (parser_token(parser)->constval.i < 0) {
4171 parseerror(parser, "builtin number must be an integer greater than zero");
4175 if (var->hasvalue) {
4176 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
4177 "builtin `%s` has already been defined\n"
4178 " -> previous declaration here: %s:%i",
4179 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
4183 func = ast_function_new(ast_ctx(var), var->name, var);
4185 parseerror(parser, "failed to allocate function for `%s`", var->name);
4188 vec_push(parser->functions, func);
4190 func->builtin = -parser_token(parser)->constval.i-1;
4193 if (!parser_next(parser)) {
4194 parseerror(parser, "expected comma or semicolon");
4196 ast_function_delete(func);
4197 var->constval.vfunc = NULL;
4201 else if (parser->tok == '{' || parser->tok == '[')
4205 parseerror(parser, "cannot declare functions within functions");
4210 ast_ctx(proto) = parser_ctx(parser);
4212 if (!parse_function_body(parser, var))
4214 ast_delete(basetype);
4215 for (i = 0; i < vec_size(parser->gotos); ++i)
4216 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
4217 vec_free(parser->gotos);
4218 vec_free(parser->labels);
4221 ast_expression *cexp;
4224 cexp = parse_expression_leave(parser, true);
4229 cval = (ast_value*)cexp;
4230 if (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
4231 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
4234 if (opts.standard != COMPILER_GMQCC &&
4235 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4236 qualifier != CV_VAR)
4238 var->cvq = CV_CONST;
4240 var->hasvalue = true;
4241 if (cval->expression.vtype == TYPE_STRING)
4242 var->constval.vstring = parser_strdup(cval->constval.vstring);
4243 else if (cval->expression.vtype == TYPE_FIELD)
4244 var->constval.vfield = cval;
4246 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
4251 shunt sy = { NULL, NULL };
4254 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
4255 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
4256 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
4257 if (!parser_sy_apply_operator(parser, &sy))
4260 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
4261 parseerror(parser, "internal error: leaked operands");
4262 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
4272 if (parser->tok == ',') {
4273 if (!parser_next(parser)) {
4274 parseerror(parser, "expected another variable");
4278 if (parser->tok != TOKEN_IDENT) {
4279 parseerror(parser, "expected another variable");
4282 var = ast_value_copy(basetype);
4284 ast_value_set_name(var, parser_tokval(parser));
4285 if (!parser_next(parser)) {
4286 parseerror(parser, "error parsing variable declaration");
4292 if (parser->tok != ';') {
4293 parseerror(parser, "missing semicolon after variables");
4297 if (!parser_next(parser)) {
4298 parseerror(parser, "parse error after variable declaration");
4302 ast_delete(basetype);
4306 if (cleanvar && var)
4308 ast_delete(basetype);
4312 ast_delete(basetype);
4313 if (cleanvar && var)
4315 if (me[0]) ast_member_delete(me[0]);
4316 if (me[1]) ast_member_delete(me[1]);
4317 if (me[2]) ast_member_delete(me[2]);
4321 static bool parser_global_statement(parser_t *parser)
4325 ast_value *istype = NULL;
4327 if (parser->tok == TOKEN_IDENT)
4328 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
4330 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
4332 return parse_variable(parser, NULL, false, CV_NONE, istype, false);
4334 else if (parse_var_qualifiers(parser, false, &cvq, &noref))
4336 if (cvq == CV_WRONG)
4338 return parse_variable(parser, NULL, true, cvq, NULL, noref);
4340 else if (parser->tok == TOKEN_KEYWORD)
4342 if (!strcmp(parser_tokval(parser), "typedef")) {
4343 if (!parser_next(parser)) {
4344 parseerror(parser, "expected type definition after 'typedef'");
4347 return parse_typedef(parser);
4349 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
4352 else if (parser->tok == '#')
4354 return parse_pragma(parser);
4356 else if (parser->tok == '$')
4358 if (!parser_next(parser)) {
4359 parseerror(parser, "parse error");
4365 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
4371 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
4373 return util_crc16(old, str, strlen(str));
4376 static void progdefs_crc_file(const char *str)
4378 /* write to progdefs.h here */
4382 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
4384 old = progdefs_crc_sum(old, str);
4385 progdefs_crc_file(str);
4389 static void generate_checksum(parser_t *parser)
4391 uint16_t crc = 0xFFFF;
4395 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
4396 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
4398 progdefs_crc_file("\tint\tpad;\n");
4399 progdefs_crc_file("\tint\tofs_return[3];\n");
4400 progdefs_crc_file("\tint\tofs_parm0[3];\n");
4401 progdefs_crc_file("\tint\tofs_parm1[3];\n");
4402 progdefs_crc_file("\tint\tofs_parm2[3];\n");
4403 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4404 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4405 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4406 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4407 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4409 for (i = 0; i < parser->crc_globals; ++i) {
4410 if (!ast_istype(parser->globals[i], ast_value))
4412 value = (ast_value*)(parser->globals[i]);
4413 switch (value->expression.vtype) {
4414 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4415 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4416 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4417 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4419 crc = progdefs_crc_both(crc, "\tint\t");
4422 crc = progdefs_crc_both(crc, value->name);
4423 crc = progdefs_crc_both(crc, ";\n");
4425 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4426 for (i = 0; i < parser->crc_fields; ++i) {
4427 if (!ast_istype(parser->fields[i], ast_value))
4429 value = (ast_value*)(parser->fields[i]);
4430 switch (value->expression.next->expression.vtype) {
4431 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4432 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4433 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4434 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4436 crc = progdefs_crc_both(crc, "\tint\t");
4439 crc = progdefs_crc_both(crc, value->name);
4440 crc = progdefs_crc_both(crc, ";\n");
4442 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4447 static parser_t *parser;
4453 parser = (parser_t*)mem_a(sizeof(parser_t));
4457 memset(parser, 0, sizeof(*parser));
4459 for (i = 0; i < operator_count; ++i) {
4460 if (operators[i].id == opid1('=')) {
4461 parser->assign_op = operators+i;
4465 if (!parser->assign_op) {
4466 printf("internal error: initializing parser: failed to find assign operator\n");
4471 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4472 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4473 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4474 vec_push(parser->_blocktypedefs, 0);
4478 bool parser_compile()
4480 /* initial lexer/parser state */
4481 parser->lex->flags.noops = true;
4483 if (parser_next(parser))
4485 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4487 if (!parser_global_statement(parser)) {
4488 if (parser->tok == TOKEN_EOF)
4489 parseerror(parser, "unexpected eof");
4490 else if (!parser->errors)
4491 parseerror(parser, "there have been errors, bailing out");
4492 lex_close(parser->lex);
4498 parseerror(parser, "parse error");
4499 lex_close(parser->lex);
4504 lex_close(parser->lex);
4507 return !parser->errors;
4510 bool parser_compile_file(const char *filename)
4512 parser->lex = lex_open(filename);
4514 con_err("failed to open file \"%s\"\n", filename);
4517 return parser_compile();
4520 bool parser_compile_string_len(const char *name, const char *str, size_t len)
4522 parser->lex = lex_open_string(str, len, name);
4524 con_err("failed to create lexer for string \"%s\"\n", name);
4527 return parser_compile();
4530 bool parser_compile_string(const char *name, const char *str)
4532 parser->lex = lex_open_string(str, strlen(str), name);
4534 con_err("failed to create lexer for string \"%s\"\n", name);
4537 return parser_compile();
4540 void parser_cleanup()
4543 for (i = 0; i < vec_size(parser->accessors); ++i) {
4544 ast_delete(parser->accessors[i]->constval.vfunc);
4545 parser->accessors[i]->constval.vfunc = NULL;
4546 ast_delete(parser->accessors[i]);
4548 for (i = 0; i < vec_size(parser->functions); ++i) {
4549 ast_delete(parser->functions[i]);
4551 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4552 ast_delete(parser->imm_vector[i]);
4554 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4555 ast_delete(parser->imm_string[i]);
4557 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4558 ast_delete(parser->imm_float[i]);
4560 for (i = 0; i < vec_size(parser->fields); ++i) {
4561 ast_delete(parser->fields[i]);
4563 for (i = 0; i < vec_size(parser->globals); ++i) {
4564 ast_delete(parser->globals[i]);
4566 vec_free(parser->accessors);
4567 vec_free(parser->functions);
4568 vec_free(parser->imm_vector);
4569 vec_free(parser->imm_string);
4570 vec_free(parser->imm_float);
4571 vec_free(parser->globals);
4572 vec_free(parser->fields);
4574 for (i = 0; i < vec_size(parser->variables); ++i)
4575 util_htdel(parser->variables[i]);
4576 vec_free(parser->variables);
4577 vec_free(parser->_blocklocals);
4578 vec_free(parser->_locals);
4580 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4581 ast_delete(parser->_typedefs[i]);
4582 vec_free(parser->_typedefs);
4583 for (i = 0; i < vec_size(parser->typedefs); ++i)
4584 util_htdel(parser->typedefs[i]);
4585 vec_free(parser->typedefs);
4586 vec_free(parser->_blocktypedefs);
4588 vec_free(parser->_block_ctx);
4590 vec_free(parser->labels);
4591 vec_free(parser->gotos);
4596 bool parser_finish(const char *output)
4602 if (!parser->errors)
4604 ir = ir_builder_new("gmqcc_out");
4606 con_out("failed to allocate builder\n");
4610 for (i = 0; i < vec_size(parser->fields); ++i) {
4613 if (!ast_istype(parser->fields[i], ast_value))
4615 field = (ast_value*)parser->fields[i];
4616 hasvalue = field->hasvalue;
4617 field->hasvalue = false;
4618 if (!ast_global_codegen((ast_value*)field, ir, true)) {
4619 con_out("failed to generate field %s\n", field->name);
4620 ir_builder_delete(ir);
4625 ast_expression *subtype;
4626 field->hasvalue = true;
4627 subtype = field->expression.next;
4628 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
4629 if (subtype->expression.vtype == TYPE_FIELD)
4630 ifld->fieldtype = subtype->expression.next->expression.vtype;
4631 else if (subtype->expression.vtype == TYPE_FUNCTION)
4632 ifld->outtype = subtype->expression.next->expression.vtype;
4633 (void)!ir_value_set_field(field->ir_v, ifld);
4636 for (i = 0; i < vec_size(parser->globals); ++i) {
4638 if (!ast_istype(parser->globals[i], ast_value))
4640 asvalue = (ast_value*)(parser->globals[i]);
4641 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
4642 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
4643 "unused global: `%s`", asvalue->name);
4645 if (!ast_global_codegen(asvalue, ir, false)) {
4646 con_out("failed to generate global %s\n", asvalue->name);
4647 ir_builder_delete(ir);
4651 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4652 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
4653 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
4654 ir_builder_delete(ir);
4658 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4659 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
4660 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
4661 ir_builder_delete(ir);
4665 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4666 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
4667 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
4668 ir_builder_delete(ir);
4672 for (i = 0; i < vec_size(parser->globals); ++i) {
4674 if (!ast_istype(parser->globals[i], ast_value))
4676 asvalue = (ast_value*)(parser->globals[i]);
4677 if (!ast_generate_accessors(asvalue, ir)) {
4678 ir_builder_delete(ir);
4682 for (i = 0; i < vec_size(parser->fields); ++i) {
4684 asvalue = (ast_value*)(parser->fields[i]->expression.next);
4686 if (!ast_istype((ast_expression*)asvalue, ast_value))
4688 if (asvalue->expression.vtype != TYPE_ARRAY)
4690 if (!ast_generate_accessors(asvalue, ir)) {
4691 ir_builder_delete(ir);
4695 for (i = 0; i < vec_size(parser->functions); ++i) {
4696 if (!ast_function_codegen(parser->functions[i], ir)) {
4697 con_out("failed to generate function %s\n", parser->functions[i]->name);
4698 ir_builder_delete(ir);
4703 ir_builder_dump(ir, con_out);
4704 for (i = 0; i < vec_size(parser->functions); ++i) {
4705 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4706 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4707 ir_builder_delete(ir);
4714 ir_builder_dump(ir, con_out);
4716 generate_checksum(parser);
4718 if (!ir_builder_generate(ir, output)) {
4719 con_out("*** failed to generate output file\n");
4720 ir_builder_delete(ir);
4725 ir_builder_delete(ir);
4729 con_out("*** there were compile errors\n");