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
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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
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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_OPERATOR) {
1576 parseerror(parser, "expected operator or end of statement");
1583 /* classify the operator */
1584 const oper_info *op;
1585 const oper_info *olast = NULL;
1587 for (o = 0; o < operator_count; ++o) {
1588 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1589 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1590 !strcmp(parser_tokval(parser), operators[o].op))
1595 if (o == operator_count) {
1596 /* no operator found... must be the end of the statement */
1599 /* found an operator */
1602 /* when declaring variables, a comma starts a new variable */
1603 if (op->id == opid1(',') && !parens && stopatcomma) {
1604 /* fixup the token */
1609 /* a colon without a pervious question mark cannot be a ternary */
1610 if (!ternaries && op->id == opid2(':','?')) {
1615 if (op->id == opid1(',')) {
1616 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1617 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1621 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1622 olast = &operators[vec_last(sy.ops).etype-1];
1625 (op->prec < olast->prec) ||
1626 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1628 if (!parser_sy_apply_operator(parser, &sy))
1630 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1631 olast = &operators[vec_last(sy.ops).etype-1];
1636 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1637 /* for gmqcc standard: open up the namespace of the previous type */
1638 ast_expression *prevex = vec_last(sy.out).out;
1640 parseerror(parser, "unexpected member operator");
1643 if (prevex->expression.vtype == TYPE_ENTITY)
1644 parser->memberof = TYPE_ENTITY;
1645 else if (prevex->expression.vtype == TYPE_VECTOR)
1646 parser->memberof = TYPE_VECTOR;
1648 parseerror(parser, "type error: type has no members");
1654 if (op->id == opid1('(')) {
1656 size_t sycount = vec_size(sy.out);
1657 DEBUGSHUNTDO(con_out("push [op] (\n"));
1658 ++parens; vec_push(parser->pot, POT_PAREN);
1659 /* we expected an operator, this is the function-call operator */
1660 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1662 ++parens; vec_push(parser->pot, POT_PAREN);
1663 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1664 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1667 } else if (op->id == opid1('[')) {
1669 parseerror(parser, "unexpected array subscript");
1672 ++parens; vec_push(parser->pot, POT_PAREN);
1673 /* push both the operator and the paren, this makes life easier */
1674 vec_push(sy.ops, syop(parser_ctx(parser), op));
1675 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1677 } else if (op->id == opid2('?',':')) {
1679 vec_push(sy.ops, syop(parser_ctx(parser), op));
1680 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1683 vec_push(parser->pot, POT_TERNARY1);
1684 } else if (op->id == opid2(':','?')) {
1685 if (!vec_size(parser->pot)) {
1686 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1689 if (vec_last(parser->pot) != POT_TERNARY1) {
1690 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1693 if (!parser_close_paren(parser, &sy, false))
1695 vec_push(sy.ops, syop(parser_ctx(parser), op));
1699 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1700 vec_push(sy.ops, syop(parser_ctx(parser), op));
1701 wantop = !!(op->flags & OP_SUFFIX);
1704 if (!parser_next(parser)) {
1707 if (parser->tok == ';' ||
1708 (!parens && parser->tok == ']'))
1714 while (vec_size(sy.ops)) {
1715 if (!parser_sy_apply_operator(parser, &sy))
1719 parser->lex->flags.noops = true;
1720 if (!vec_size(sy.out)) {
1721 parseerror(parser, "empty expression");
1724 expr = sy.out[0].out;
1727 DEBUGSHUNTDO(con_out("shunt done\n"));
1728 if (vec_size(parser->pot)) {
1729 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1732 vec_free(parser->pot);
1736 parser->lex->flags.noops = true;
1742 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1744 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1747 if (!parser_next(parser)) {
1754 static void parser_enterblock(parser_t *parser)
1756 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1757 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1758 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1759 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1760 vec_push(parser->_block_ctx, parser_ctx(parser));
1763 static bool parser_leaveblock(parser_t *parser)
1766 size_t locals, typedefs;
1768 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1769 parseerror(parser, "internal error: parser_leaveblock with no block");
1773 util_htdel(vec_last(parser->variables));
1774 vec_pop(parser->variables);
1775 if (!vec_size(parser->_blocklocals)) {
1776 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1780 locals = vec_last(parser->_blocklocals);
1781 vec_pop(parser->_blocklocals);
1782 while (vec_size(parser->_locals) != locals) {
1783 ast_expression *e = vec_last(parser->_locals);
1784 ast_value *v = (ast_value*)e;
1785 vec_pop(parser->_locals);
1786 if (ast_istype(e, ast_value) && !v->uses) {
1787 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name)) {
1794 typedefs = vec_last(parser->_blocktypedefs);
1795 while (vec_size(parser->_typedefs) != typedefs) {
1796 ast_delete(vec_last(parser->_typedefs));
1797 vec_pop(parser->_typedefs);
1799 util_htdel(vec_last(parser->typedefs));
1800 vec_pop(parser->typedefs);
1802 vec_pop(parser->_block_ctx);
1806 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1808 vec_push(parser->_locals, e);
1809 util_htset(vec_last(parser->variables), name, (void*)e);
1812 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1815 ast_expression *cond, *ontrue, *onfalse = NULL;
1818 lex_ctx ctx = parser_ctx(parser);
1820 (void)block; /* not touching */
1822 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1823 if (!parser_next(parser)) {
1824 parseerror(parser, "expected condition or 'not'");
1827 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
1829 if (!parser_next(parser)) {
1830 parseerror(parser, "expected condition in parenthesis");
1834 if (parser->tok != '(') {
1835 parseerror(parser, "expected 'if' condition in parenthesis");
1838 /* parse into the expression */
1839 if (!parser_next(parser)) {
1840 parseerror(parser, "expected 'if' condition after opening paren");
1843 /* parse the condition */
1844 cond = parse_expression_leave(parser, false);
1848 if (parser->tok != ')') {
1849 parseerror(parser, "expected closing paren after 'if' condition");
1853 /* parse into the 'then' branch */
1854 if (!parser_next(parser)) {
1855 parseerror(parser, "expected statement for on-true branch of 'if'");
1859 if (!parse_statement_or_block(parser, &ontrue)) {
1863 /* check for an else */
1864 if (!strcmp(parser_tokval(parser), "else")) {
1865 /* parse into the 'else' branch */
1866 if (!parser_next(parser)) {
1867 parseerror(parser, "expected on-false branch after 'else'");
1872 if (!parse_statement_or_block(parser, &onfalse)) {
1880 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1882 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1883 *out = (ast_expression*)ifthen;
1887 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1890 ast_expression *cond, *ontrue;
1892 lex_ctx ctx = parser_ctx(parser);
1894 (void)block; /* not touching */
1896 /* skip the 'while' and check for opening paren */
1897 if (!parser_next(parser) || parser->tok != '(') {
1898 parseerror(parser, "expected 'while' condition in parenthesis");
1901 /* parse into the expression */
1902 if (!parser_next(parser)) {
1903 parseerror(parser, "expected 'while' condition after opening paren");
1906 /* parse the condition */
1907 cond = parse_expression_leave(parser, false);
1911 if (parser->tok != ')') {
1912 parseerror(parser, "expected closing paren after 'while' condition");
1916 /* parse into the 'then' branch */
1917 if (!parser_next(parser)) {
1918 parseerror(parser, "expected while-loop body");
1922 if (!parse_statement_or_block(parser, &ontrue)) {
1927 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1928 *out = (ast_expression*)aloop;
1932 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1935 ast_expression *cond, *ontrue;
1937 lex_ctx ctx = parser_ctx(parser);
1939 (void)block; /* not touching */
1941 /* skip the 'do' and get the body */
1942 if (!parser_next(parser)) {
1943 parseerror(parser, "expected loop body");
1946 if (!parse_statement_or_block(parser, &ontrue))
1949 /* expect the "while" */
1950 if (parser->tok != TOKEN_KEYWORD ||
1951 strcmp(parser_tokval(parser), "while"))
1953 parseerror(parser, "expected 'while' and condition");
1958 /* skip the 'while' and check for opening paren */
1959 if (!parser_next(parser) || parser->tok != '(') {
1960 parseerror(parser, "expected 'while' condition in parenthesis");
1964 /* parse into the expression */
1965 if (!parser_next(parser)) {
1966 parseerror(parser, "expected 'while' condition after opening paren");
1970 /* parse the condition */
1971 cond = parse_expression_leave(parser, false);
1975 if (parser->tok != ')') {
1976 parseerror(parser, "expected closing paren after 'while' condition");
1982 if (!parser_next(parser) || parser->tok != ';') {
1983 parseerror(parser, "expected semicolon after condition");
1989 if (!parser_next(parser)) {
1990 parseerror(parser, "parse error");
1996 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1997 *out = (ast_expression*)aloop;
2001 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2004 ast_expression *initexpr, *cond, *increment, *ontrue;
2008 lex_ctx ctx = parser_ctx(parser);
2010 parser_enterblock(parser);
2017 /* skip the 'while' and check for opening paren */
2018 if (!parser_next(parser) || parser->tok != '(') {
2019 parseerror(parser, "expected 'for' expressions in parenthesis");
2022 /* parse into the expression */
2023 if (!parser_next(parser)) {
2024 parseerror(parser, "expected 'for' initializer after opening paren");
2029 if (parser->tok == TOKEN_IDENT)
2030 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2032 if (typevar || parser->tok == TOKEN_TYPENAME) {
2033 if (opts_standard != COMPILER_GMQCC) {
2034 if (parsewarning(parser, WARN_EXTENSIONS,
2035 "current standard does not allow variable declarations in for-loop initializers"))
2038 if (!parse_variable(parser, block, true, CV_VAR, typevar, false))
2041 else if (parser->tok != ';')
2043 initexpr = parse_expression_leave(parser, false);
2048 /* move on to condition */
2049 if (parser->tok != ';') {
2050 parseerror(parser, "expected semicolon after for-loop initializer");
2053 if (!parser_next(parser)) {
2054 parseerror(parser, "expected for-loop condition");
2058 /* parse the condition */
2059 if (parser->tok != ';') {
2060 cond = parse_expression_leave(parser, false);
2065 /* move on to incrementor */
2066 if (parser->tok != ';') {
2067 parseerror(parser, "expected semicolon after for-loop initializer");
2070 if (!parser_next(parser)) {
2071 parseerror(parser, "expected for-loop condition");
2075 /* parse the incrementor */
2076 if (parser->tok != ')') {
2077 increment = parse_expression_leave(parser, false);
2080 if (!ast_side_effects(increment)) {
2081 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2087 if (parser->tok != ')') {
2088 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2091 /* parse into the 'then' branch */
2092 if (!parser_next(parser)) {
2093 parseerror(parser, "expected for-loop body");
2096 if (!parse_statement_or_block(parser, &ontrue))
2099 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
2100 *out = (ast_expression*)aloop;
2102 if (!parser_leaveblock(parser))
2106 if (initexpr) ast_delete(initexpr);
2107 if (cond) ast_delete(cond);
2108 if (increment) ast_delete(increment);
2109 (void)!parser_leaveblock(parser);
2113 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2115 ast_expression *exp = NULL;
2116 ast_return *ret = NULL;
2117 ast_value *expected = parser->function->vtype;
2119 lex_ctx ctx = parser_ctx(parser);
2121 (void)block; /* not touching */
2123 if (!parser_next(parser)) {
2124 parseerror(parser, "expected return expression");
2128 if (parser->tok != ';') {
2129 exp = parse_expression(parser, false);
2133 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2134 parseerror(parser, "return with invalid expression");
2137 ret = ast_return_new(exp->expression.node.context, exp);
2143 if (!parser_next(parser))
2144 parseerror(parser, "parse error");
2145 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2146 if (opts_standard != COMPILER_GMQCC)
2147 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2149 parseerror(parser, "return without value");
2151 ret = ast_return_new(ctx, NULL);
2153 *out = (ast_expression*)ret;
2157 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2159 lex_ctx ctx = parser_ctx(parser);
2161 (void)block; /* not touching */
2163 if (!parser_next(parser) || parser->tok != ';') {
2164 parseerror(parser, "expected semicolon");
2168 if (!parser_next(parser))
2169 parseerror(parser, "parse error");
2171 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
2175 /* returns true when it was a variable qualifier, false otherwise!
2176 * on error, cvq is set to CV_WRONG
2178 static bool parse_var_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref)
2180 bool had_const = false;
2181 bool had_var = false;
2182 bool had_noref = false;
2185 if (!strcmp(parser_tokval(parser), "const"))
2187 else if (!strcmp(parser_tokval(parser), "var"))
2189 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2191 else if (!strcmp(parser_tokval(parser), "noref"))
2193 else if (!had_const && !had_var && !had_noref) {
2198 if (!parser_next(parser))
2210 parseerror(parser, "parse error after variable qualifier");
2215 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2217 ast_expression *operand;
2220 ast_switch *switchnode;
2221 ast_switch_case swcase;
2226 lex_ctx ctx = parser_ctx(parser);
2228 (void)block; /* not touching */
2231 /* parse over the opening paren */
2232 if (!parser_next(parser) || parser->tok != '(') {
2233 parseerror(parser, "expected switch operand in parenthesis");
2237 /* parse into the expression */
2238 if (!parser_next(parser)) {
2239 parseerror(parser, "expected switch operand");
2242 /* parse the operand */
2243 operand = parse_expression_leave(parser, false);
2247 switchnode = ast_switch_new(ctx, operand);
2250 if (parser->tok != ')') {
2251 ast_delete(switchnode);
2252 parseerror(parser, "expected closing paren after 'switch' operand");
2256 /* parse over the opening paren */
2257 if (!parser_next(parser) || parser->tok != '{') {
2258 ast_delete(switchnode);
2259 parseerror(parser, "expected list of cases");
2263 if (!parser_next(parser)) {
2264 ast_delete(switchnode);
2265 parseerror(parser, "expected 'case' or 'default'");
2269 /* new block; allow some variables to be declared here */
2270 parser_enterblock(parser);
2273 if (parser->tok == TOKEN_IDENT)
2274 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2275 if (typevar || parser->tok == TOKEN_TYPENAME) {
2276 if (!parse_variable(parser, block, false, CV_NONE, typevar, false)) {
2277 ast_delete(switchnode);
2282 if (parse_var_qualifiers(parser, true, &cvq, &noref))
2284 if (cvq == CV_WRONG) {
2285 ast_delete(switchnode);
2288 if (!parse_variable(parser, block, false, cvq, NULL, noref)) {
2289 ast_delete(switchnode);
2298 while (parser->tok != '}') {
2299 ast_block *caseblock;
2301 if (parser->tok != TOKEN_KEYWORD) {
2302 ast_delete(switchnode);
2303 parseerror(parser, "expected 'case' or 'default'");
2306 if (!strcmp(parser_tokval(parser), "case")) {
2307 if (!parser_next(parser)) {
2308 ast_delete(switchnode);
2309 parseerror(parser, "expected expression for case");
2312 swcase.value = parse_expression_leave(parser, false);
2313 if (!swcase.value) {
2314 ast_delete(switchnode);
2315 parseerror(parser, "expected expression for case");
2318 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2319 opval = (ast_value*)swcase.value;
2320 if (!ast_istype(swcase.value, ast_value)) { /* || opval->cvq != CV_CONST) { */
2321 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2327 else if (!strcmp(parser_tokval(parser), "default")) {
2328 swcase.value = NULL;
2329 if (!parser_next(parser)) {
2330 ast_delete(switchnode);
2331 parseerror(parser, "expected colon");
2336 /* Now the colon and body */
2337 if (parser->tok != ':') {
2338 if (swcase.value) ast_unref(swcase.value);
2339 ast_delete(switchnode);
2340 parseerror(parser, "expected colon");
2344 if (!parser_next(parser)) {
2345 if (swcase.value) ast_unref(swcase.value);
2346 ast_delete(switchnode);
2347 parseerror(parser, "expected statements or case");
2350 caseblock = ast_block_new(parser_ctx(parser));
2352 if (swcase.value) ast_unref(swcase.value);
2353 ast_delete(switchnode);
2356 swcase.code = (ast_expression*)caseblock;
2357 vec_push(switchnode->cases, swcase);
2359 ast_expression *expr;
2360 if (parser->tok == '}')
2362 if (parser->tok == TOKEN_KEYWORD) {
2363 if (!strcmp(parser_tokval(parser), "case") ||
2364 !strcmp(parser_tokval(parser), "default"))
2369 if (!parse_statement(parser, caseblock, &expr, true)) {
2370 ast_delete(switchnode);
2375 if (!ast_block_add_expr(caseblock, expr)) {
2376 ast_delete(switchnode);
2382 parser_leaveblock(parser);
2385 if (parser->tok != '}') {
2386 ast_delete(switchnode);
2387 parseerror(parser, "expected closing paren of case list");
2390 if (!parser_next(parser)) {
2391 ast_delete(switchnode);
2392 parseerror(parser, "parse error after switch");
2395 *out = (ast_expression*)switchnode;
2399 static bool parse_goto(parser_t *parser, ast_expression **out)
2404 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2405 parseerror(parser, "expected label name after `goto`");
2409 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
2411 for (i = 0; i < vec_size(parser->labels); ++i) {
2412 if (!strcmp(parser->labels[i]->name, parser_tokval(parser))) {
2413 ast_goto_set_label(gt, parser->labels[i]);
2417 if (i == vec_size(parser->labels))
2418 vec_push(parser->gotos, gt);
2420 if (!parser_next(parser) || parser->tok != ';') {
2421 parseerror(parser, "semicolon expected after goto label");
2424 if (!parser_next(parser)) {
2425 parseerror(parser, "parse error after goto");
2429 *out = (ast_expression*)gt;
2433 static bool parse_skipwhite(parser_t *parser)
2436 if (!parser_next(parser))
2438 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
2439 return parser->tok < TOKEN_ERROR;
2442 static bool parse_eol(parser_t *parser)
2444 if (!parse_skipwhite(parser))
2446 return parser->tok == TOKEN_EOL;
2449 static bool parse_pragma_do(parser_t *parser)
2451 if (!parser_next(parser) ||
2452 parser->tok != TOKEN_IDENT ||
2453 strcmp(parser_tokval(parser), "pragma"))
2455 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
2458 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
2459 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
2463 if (!strcmp(parser_tokval(parser), "noref")) {
2464 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
2465 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
2468 parser->noref = !!parser_token(parser)->constval.i;
2469 if (!parse_eol(parser)) {
2470 parseerror(parser, "parse error after `noref` pragma");
2476 parseerror(parser, "unrecognized hash-keyword: `%s`", parser_tokval(parser));
2483 static bool parse_pragma(parser_t *parser)
2486 parser->lex->flags.preprocessing = true;
2487 parser->lex->flags.mergelines = true;
2488 rv = parse_pragma_do(parser);
2489 if (parser->tok != TOKEN_EOL) {
2490 parseerror(parser, "junk after pragma");
2493 parser->lex->flags.preprocessing = false;
2494 parser->lex->flags.mergelines = false;
2495 if (!parser_next(parser)) {
2496 parseerror(parser, "parse error after pragma");
2502 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2506 ast_value *typevar = NULL;
2510 if (parser->tok == TOKEN_IDENT)
2511 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2513 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2515 /* local variable */
2517 parseerror(parser, "cannot declare a variable from here");
2520 if (opts_standard == COMPILER_QCC) {
2521 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2524 if (!parse_variable(parser, block, false, CV_NONE, typevar, false))
2528 else if (parse_var_qualifiers(parser, !!block, &cvq, &noref))
2530 if (cvq == CV_WRONG)
2532 return parse_variable(parser, block, true, cvq, NULL, noref);
2534 else if (parser->tok == TOKEN_KEYWORD)
2536 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
2541 if (!parser_next(parser)) {
2542 parseerror(parser, "parse error after __builtin_debug_printtype");
2546 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
2548 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
2549 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
2550 if (!parser_next(parser)) {
2551 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
2557 if (!parse_statement(parser, block, out, allow_cases))
2560 con_out("__builtin_debug_printtype: got no output node\n");
2563 ast_type_to_string(*out, ty, sizeof(ty));
2564 con_out("__builtin_debug_printtype: `%s`\n", ty);
2569 else if (!strcmp(parser_tokval(parser), "return"))
2571 return parse_return(parser, block, out);
2573 else if (!strcmp(parser_tokval(parser), "if"))
2575 return parse_if(parser, block, out);
2577 else if (!strcmp(parser_tokval(parser), "while"))
2579 return parse_while(parser, block, out);
2581 else if (!strcmp(parser_tokval(parser), "do"))
2583 return parse_dowhile(parser, block, out);
2585 else if (!strcmp(parser_tokval(parser), "for"))
2587 if (opts_standard == COMPILER_QCC) {
2588 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2591 return parse_for(parser, block, out);
2593 else if (!strcmp(parser_tokval(parser), "break"))
2595 return parse_break_continue(parser, block, out, false);
2597 else if (!strcmp(parser_tokval(parser), "continue"))
2599 return parse_break_continue(parser, block, out, true);
2601 else if (!strcmp(parser_tokval(parser), "switch"))
2603 return parse_switch(parser, block, out);
2605 else if (!strcmp(parser_tokval(parser), "case") ||
2606 !strcmp(parser_tokval(parser), "default"))
2609 parseerror(parser, "unexpected 'case' label");
2614 else if (!strcmp(parser_tokval(parser), "goto"))
2616 return parse_goto(parser, out);
2618 else if (!strcmp(parser_tokval(parser), "typedef"))
2620 if (!parser_next(parser)) {
2621 parseerror(parser, "expected type definition after 'typedef'");
2624 return parse_typedef(parser);
2626 parseerror(parser, "Unexpected keyword");
2629 else if (parser->tok == '{')
2632 inner = parse_block(parser);
2635 *out = (ast_expression*)inner;
2638 else if (parser->tok == ':')
2642 if (!parser_next(parser)) {
2643 parseerror(parser, "expected label name");
2646 if (parser->tok != TOKEN_IDENT) {
2647 parseerror(parser, "label must be an identifier");
2650 label = ast_label_new(parser_ctx(parser), parser_tokval(parser));
2653 vec_push(parser->labels, label);
2654 *out = (ast_expression*)label;
2655 if (!parser_next(parser)) {
2656 parseerror(parser, "parse error after label");
2659 for (i = 0; i < vec_size(parser->gotos); ++i) {
2660 if (!strcmp(parser->gotos[i]->name, label->name)) {
2661 ast_goto_set_label(parser->gotos[i], label);
2662 vec_remove(parser->gotos, i, 1);
2668 else if (parser->tok == ';')
2670 if (!parser_next(parser)) {
2671 parseerror(parser, "parse error after empty statement");
2678 ast_expression *exp = parse_expression(parser, false);
2682 if (!ast_side_effects(exp)) {
2683 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2690 static bool parse_block_into(parser_t *parser, ast_block *block)
2694 parser_enterblock(parser);
2696 if (!parser_next(parser)) { /* skip the '{' */
2697 parseerror(parser, "expected function body");
2701 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2703 ast_expression *expr = NULL;
2704 if (parser->tok == '}')
2707 if (!parse_statement(parser, block, &expr, false)) {
2708 /* parseerror(parser, "parse error"); */
2714 if (!ast_block_add_expr(block, expr)) {
2721 if (parser->tok != '}') {
2724 (void)parser_next(parser);
2728 if (!parser_leaveblock(parser))
2730 return retval && !!block;
2733 static ast_block* parse_block(parser_t *parser)
2736 block = ast_block_new(parser_ctx(parser));
2739 if (!parse_block_into(parser, block)) {
2740 ast_block_delete(block);
2746 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
2748 if (parser->tok == '{') {
2749 *out = (ast_expression*)parse_block(parser);
2752 return parse_statement(parser, NULL, out, false);
2755 static bool create_vector_members(ast_value *var, ast_member **me)
2758 size_t len = strlen(var->name);
2760 for (i = 0; i < 3; ++i) {
2761 char *name = mem_a(len+3);
2762 memcpy(name, var->name, len);
2764 name[len+1] = 'x'+i;
2766 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
2775 do { ast_member_delete(me[--i]); } while(i);
2779 static bool parse_function_body(parser_t *parser, ast_value *var)
2781 ast_block *block = NULL;
2786 ast_expression *framenum = NULL;
2787 ast_expression *nextthink = NULL;
2788 /* None of the following have to be deleted */
2789 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2790 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2791 bool has_frame_think;
2795 has_frame_think = false;
2796 old = parser->function;
2798 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
2799 parseerror(parser, "gotos/labels leaking");
2803 if (var->expression.variadic) {
2804 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2805 "variadic function with implementation will not be able to access additional parameters"))
2811 if (parser->tok == '[') {
2812 /* got a frame definition: [ framenum, nextthink ]
2813 * this translates to:
2814 * self.frame = framenum;
2815 * self.nextthink = time + 0.1;
2816 * self.think = nextthink;
2820 fld_think = parser_find_field(parser, "think");
2821 fld_nextthink = parser_find_field(parser, "nextthink");
2822 fld_frame = parser_find_field(parser, "frame");
2823 if (!fld_think || !fld_nextthink || !fld_frame) {
2824 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2825 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2828 gbl_time = parser_find_global(parser, "time");
2829 gbl_self = parser_find_global(parser, "self");
2830 if (!gbl_time || !gbl_self) {
2831 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2832 parseerror(parser, "please declare the following globals: `time`, `self`");
2836 if (!parser_next(parser))
2839 framenum = parse_expression_leave(parser, true);
2841 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2844 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
2845 ast_unref(framenum);
2846 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2850 if (parser->tok != ',') {
2851 ast_unref(framenum);
2852 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2853 parseerror(parser, "Got a %i\n", parser->tok);
2857 if (!parser_next(parser)) {
2858 ast_unref(framenum);
2862 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2864 /* qc allows the use of not-yet-declared functions here
2865 * - this automatically creates a prototype */
2866 ast_value *thinkfunc;
2867 ast_expression *functype = fld_think->expression.next;
2869 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2870 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2871 ast_unref(framenum);
2872 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2876 if (!parser_next(parser)) {
2877 ast_unref(framenum);
2878 ast_delete(thinkfunc);
2882 vec_push(parser->globals, (ast_expression*)thinkfunc);
2883 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
2884 nextthink = (ast_expression*)thinkfunc;
2887 nextthink = parse_expression_leave(parser, true);
2889 ast_unref(framenum);
2890 parseerror(parser, "expected a think-function in [frame,think] notation");
2895 if (!ast_istype(nextthink, ast_value)) {
2896 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2900 if (retval && parser->tok != ']') {
2901 parseerror(parser, "expected closing `]` for [frame,think] notation");
2905 if (retval && !parser_next(parser)) {
2909 if (retval && parser->tok != '{') {
2910 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2915 ast_unref(nextthink);
2916 ast_unref(framenum);
2920 has_frame_think = true;
2923 block = ast_block_new(parser_ctx(parser));
2925 parseerror(parser, "failed to allocate block");
2926 if (has_frame_think) {
2927 ast_unref(nextthink);
2928 ast_unref(framenum);
2933 if (has_frame_think) {
2935 ast_expression *self_frame;
2936 ast_expression *self_nextthink;
2937 ast_expression *self_think;
2938 ast_expression *time_plus_1;
2939 ast_store *store_frame;
2940 ast_store *store_nextthink;
2941 ast_store *store_think;
2943 ctx = parser_ctx(parser);
2944 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2945 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2946 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2948 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2949 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2951 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2952 if (self_frame) ast_delete(self_frame);
2953 if (self_nextthink) ast_delete(self_nextthink);
2954 if (self_think) ast_delete(self_think);
2955 if (time_plus_1) ast_delete(time_plus_1);
2961 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2962 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2963 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2966 ast_delete(self_frame);
2969 if (!store_nextthink) {
2970 ast_delete(self_nextthink);
2974 ast_delete(self_think);
2978 if (store_frame) ast_delete(store_frame);
2979 if (store_nextthink) ast_delete(store_nextthink);
2980 if (store_think) ast_delete(store_think);
2983 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
2984 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
2985 !ast_block_add_expr(block, (ast_expression*)store_think))
2992 parseerror(parser, "failed to generate code for [frame,think]");
2993 ast_unref(nextthink);
2994 ast_unref(framenum);
3000 parser_enterblock(parser);
3002 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3004 ast_value *param = var->expression.params[parami];
3007 if (param->expression.vtype != TYPE_VECTOR &&
3008 (param->expression.vtype != TYPE_FIELD ||
3009 param->expression.next->expression.vtype != TYPE_VECTOR))
3014 if (!create_vector_members(param, me)) {
3015 ast_block_delete(block);
3019 for (e = 0; e < 3; ++e) {
3020 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3021 ast_block_collect(block, (ast_expression*)me[e]);
3025 func = ast_function_new(ast_ctx(var), var->name, var);
3027 parseerror(parser, "failed to allocate function for `%s`", var->name);
3028 ast_block_delete(block);
3031 vec_push(parser->functions, func);
3033 parser->function = func;
3034 if (!parse_block_into(parser, block)) {
3035 ast_block_delete(block);
3039 vec_push(func->blocks, block);
3041 parser->function = old;
3042 if (!parser_leaveblock(parser))
3044 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3045 parseerror(parser, "internal error: local scopes left");
3049 if (parser->tok == ';')
3050 return parser_next(parser);
3051 else if (opts_standard == COMPILER_QCC)
3052 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3056 vec_pop(parser->functions);
3057 ast_function_delete(func);
3058 var->constval.vfunc = NULL;
3061 (void)!parser_leaveblock(parser);
3062 parser->function = old;
3066 static ast_expression *array_accessor_split(
3071 ast_expression *left,
3072 ast_expression *right
3078 lex_ctx ctx = ast_ctx(array);
3080 if (!left || !right) {
3081 if (left) ast_delete(left);
3082 if (right) ast_delete(right);
3086 cmp = ast_binary_new(ctx, INSTR_LT,
3087 (ast_expression*)index,
3088 (ast_expression*)parser_const_float(parser, middle));
3092 parseerror(parser, "internal error: failed to create comparison for array setter");
3096 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3098 ast_delete(cmp); /* will delete left and right */
3099 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3103 return (ast_expression*)ifthen;
3106 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3108 lex_ctx ctx = ast_ctx(array);
3110 if (from+1 == afterend) {
3111 /* set this value */
3114 ast_array_index *subscript;
3116 int assignop = type_store_instr[value->expression.vtype];
3118 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3119 assignop = INSTR_STORE_V;
3121 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3125 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3127 ast_delete(subscript);
3131 block = ast_block_new(ctx);
3137 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3142 ret = ast_return_new(ctx, NULL);
3148 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3153 return (ast_expression*)block;
3155 ast_expression *left, *right;
3156 size_t diff = afterend - from;
3157 size_t middle = from + diff/2;
3158 left = array_setter_node(parser, array, index, value, from, middle);
3159 right = array_setter_node(parser, array, index, value, middle, afterend);
3160 return array_accessor_split(parser, array, index, middle, left, right);
3164 static ast_expression *array_field_setter_node(
3173 lex_ctx ctx = ast_ctx(array);
3175 if (from+1 == afterend) {
3176 /* set this value */
3179 ast_entfield *entfield;
3180 ast_array_index *subscript;
3182 int assignop = type_storep_instr[value->expression.vtype];
3184 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3185 assignop = INSTR_STOREP_V;
3187 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3191 entfield = ast_entfield_new_force(ctx,
3192 (ast_expression*)entity,
3193 (ast_expression*)subscript,
3194 (ast_expression*)subscript);
3196 ast_delete(subscript);
3200 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3202 ast_delete(entfield);
3206 block = ast_block_new(ctx);
3212 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3217 ret = ast_return_new(ctx, NULL);
3223 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3228 return (ast_expression*)block;
3230 ast_expression *left, *right;
3231 size_t diff = afterend - from;
3232 size_t middle = from + diff/2;
3233 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3234 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3235 return array_accessor_split(parser, array, index, middle, left, right);
3239 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3241 lex_ctx ctx = ast_ctx(array);
3243 if (from+1 == afterend) {
3245 ast_array_index *subscript;
3247 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3251 ret = ast_return_new(ctx, (ast_expression*)subscript);
3253 ast_delete(subscript);
3257 return (ast_expression*)ret;
3259 ast_expression *left, *right;
3260 size_t diff = afterend - from;
3261 size_t middle = from + diff/2;
3262 left = array_getter_node(parser, array, index, from, middle);
3263 right = array_getter_node(parser, array, index, middle, afterend);
3264 return array_accessor_split(parser, array, index, middle, left, right);
3268 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3270 ast_function *func = NULL;
3271 ast_value *fval = NULL;
3272 ast_block *body = NULL;
3274 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3276 parseerror(parser, "failed to create accessor function value");
3280 func = ast_function_new(ast_ctx(array), funcname, fval);
3283 parseerror(parser, "failed to create accessor function node");
3287 body = ast_block_new(ast_ctx(array));
3289 parseerror(parser, "failed to create block for array accessor");
3295 vec_push(func->blocks, body);
3298 vec_push(parser->accessors, fval);
3303 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
3305 ast_expression *root = NULL;
3306 ast_value *index = NULL;
3307 ast_value *value = NULL;
3311 if (!ast_istype(array->expression.next, ast_value)) {
3312 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3316 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3318 func = fval->constval.vfunc;
3319 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3321 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3322 value = ast_value_copy((ast_value*)array->expression.next);
3324 if (!index || !value) {
3325 parseerror(parser, "failed to create locals for array accessor");
3328 (void)!ast_value_set_name(value, "value"); /* not important */
3329 vec_push(fval->expression.params, index);
3330 vec_push(fval->expression.params, value);
3332 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
3334 parseerror(parser, "failed to build accessor search tree");
3338 array->setter = fval;
3339 return ast_block_add_expr(func->blocks[0], root);
3341 if (index) ast_delete(index);
3342 if (value) ast_delete(value);
3343 if (root) ast_delete(root);
3349 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
3351 ast_expression *root = NULL;
3352 ast_value *entity = NULL;
3353 ast_value *index = NULL;
3354 ast_value *value = NULL;
3358 if (!ast_istype(array->expression.next, ast_value)) {
3359 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3363 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3365 func = fval->constval.vfunc;
3366 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3368 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
3369 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3370 value = ast_value_copy((ast_value*)array->expression.next);
3371 if (!entity || !index || !value) {
3372 parseerror(parser, "failed to create locals for array accessor");
3375 (void)!ast_value_set_name(value, "value"); /* not important */
3376 vec_push(fval->expression.params, entity);
3377 vec_push(fval->expression.params, index);
3378 vec_push(fval->expression.params, value);
3380 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3382 parseerror(parser, "failed to build accessor search tree");
3386 array->setter = fval;
3387 return ast_block_add_expr(func->blocks[0], root);
3389 if (entity) ast_delete(entity);
3390 if (index) ast_delete(index);
3391 if (value) ast_delete(value);
3392 if (root) ast_delete(root);
3398 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3400 ast_expression *root = NULL;
3401 ast_value *index = NULL;
3405 /* NOTE: checking array->expression.next rather than elemtype since
3406 * for fields elemtype is a temporary fieldtype.
3408 if (!ast_istype(array->expression.next, ast_value)) {
3409 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3413 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3415 func = fval->constval.vfunc;
3416 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3418 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3421 parseerror(parser, "failed to create locals for array accessor");
3424 vec_push(fval->expression.params, index);
3426 root = array_getter_node(parser, array, index, 0, array->expression.count);
3428 parseerror(parser, "failed to build accessor search tree");
3432 array->getter = fval;
3433 return ast_block_add_expr(func->blocks[0], root);
3435 if (index) ast_delete(index);
3436 if (root) ast_delete(root);
3442 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3443 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3451 bool variadic = false;
3453 ctx = parser_ctx(parser);
3455 /* for the sake of less code we parse-in in this function */
3456 if (!parser_next(parser)) {
3457 parseerror(parser, "expected parameter list");
3463 /* parse variables until we hit a closing paren */
3464 while (parser->tok != ')') {
3466 /* there must be commas between them */
3467 if (parser->tok != ',') {
3468 parseerror(parser, "expected comma or end of parameter list");
3471 if (!parser_next(parser)) {
3472 parseerror(parser, "expected parameter");
3478 if (parser->tok == TOKEN_DOTS) {
3479 /* '...' indicates a varargs function */
3481 if (!parser_next(parser)) {
3482 parseerror(parser, "expected parameter");
3485 if (parser->tok != ')') {
3486 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3492 /* for anything else just parse a typename */
3493 param = parse_typename(parser, NULL, NULL);
3496 vec_push(params, param);
3497 if (param->expression.vtype >= TYPE_VARIANT) {
3498 char typename[1024];
3499 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
3500 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
3506 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
3510 if (vec_size(params) > 8 && opts_standard == COMPILER_QCC)
3511 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3514 if (!parser_next(parser)) {
3515 parseerror(parser, "parse error after typename");
3519 /* now turn 'var' into a function type */
3520 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3521 fval->expression.next = (ast_expression*)var;
3522 fval->expression.variadic = variadic;
3525 var->expression.params = params;
3532 for (i = 0; i < vec_size(params); ++i)
3533 ast_delete(params[i]);
3538 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3540 ast_expression *cexp;
3541 ast_value *cval, *tmp;
3544 ctx = parser_ctx(parser);
3546 if (!parser_next(parser)) {
3548 parseerror(parser, "expected array-size");
3552 cexp = parse_expression_leave(parser, true);
3554 if (!cexp || !ast_istype(cexp, ast_value)) {
3558 parseerror(parser, "expected array-size as constant positive integer");
3561 cval = (ast_value*)cexp;
3563 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3564 tmp->expression.next = (ast_expression*)var;
3567 if (cval->expression.vtype == TYPE_INTEGER)
3568 tmp->expression.count = cval->constval.vint;
3569 else if (cval->expression.vtype == TYPE_FLOAT)
3570 tmp->expression.count = cval->constval.vfloat;
3574 parseerror(parser, "array-size must be a positive integer constant");
3579 if (parser->tok != ']') {
3581 parseerror(parser, "expected ']' after array-size");
3584 if (!parser_next(parser)) {
3586 parseerror(parser, "error after parsing array size");
3592 /* Parse a complete typename.
3593 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3594 * but when parsing variables separated by comma
3595 * 'storebase' should point to where the base-type should be kept.
3596 * The base type makes up every bit of type information which comes *before* the
3599 * The following will be parsed in its entirety:
3601 * The 'basetype' in this case is 'void()'
3602 * and if there's a comma after it, say:
3604 * then the type-information 'void()' can be stored in 'storebase'
3606 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3608 ast_value *var, *tmp;
3611 const char *name = NULL;
3612 bool isfield = false;
3613 bool wasarray = false;
3614 size_t morefields = 0;
3616 ctx = parser_ctx(parser);
3618 /* types may start with a dot */
3619 if (parser->tok == '.') {
3621 /* if we parsed a dot we need a typename now */
3622 if (!parser_next(parser)) {
3623 parseerror(parser, "expected typename for field definition");
3627 /* Further dots are handled seperately because they won't be part of the
3630 while (parser->tok == '.') {
3632 if (!parser_next(parser)) {
3633 parseerror(parser, "expected typename for field definition");
3638 if (parser->tok == TOKEN_IDENT)
3639 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
3640 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
3641 parseerror(parser, "expected typename");
3645 /* generate the basic type value */
3646 if (cached_typedef) {
3647 var = ast_value_copy(cached_typedef);
3648 ast_value_set_name(var, "<type(from_def)>");
3650 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3652 for (; morefields; --morefields) {
3653 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
3654 tmp->expression.next = (ast_expression*)var;
3658 /* do not yet turn into a field - remember:
3659 * .void() foo; is a field too
3660 * .void()() foo; is a function
3664 if (!parser_next(parser)) {
3666 parseerror(parser, "parse error after typename");
3670 /* an opening paren now starts the parameter-list of a function
3671 * this is where original-QC has parameter lists.
3672 * We allow a single parameter list here.
3673 * Much like fteqcc we don't allow `float()() x`
3675 if (parser->tok == '(') {
3676 var = parse_parameter_list(parser, var);
3681 /* store the base if requested */
3683 *storebase = ast_value_copy(var);
3685 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3686 tmp->expression.next = (ast_expression*)*storebase;
3691 /* there may be a name now */
3692 if (parser->tok == TOKEN_IDENT) {
3693 name = util_strdup(parser_tokval(parser));
3695 if (!parser_next(parser)) {
3697 parseerror(parser, "error after variable or field declaration");
3702 /* now this may be an array */
3703 if (parser->tok == '[') {
3705 var = parse_arraysize(parser, var);
3710 /* This is the point where we can turn it into a field */
3712 /* turn it into a field if desired */
3713 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3714 tmp->expression.next = (ast_expression*)var;
3718 /* now there may be function parens again */
3719 if (parser->tok == '(' && opts_standard == COMPILER_QCC)
3720 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3721 if (parser->tok == '(' && wasarray)
3722 parseerror(parser, "arrays as part of a return type is not supported");
3723 while (parser->tok == '(') {
3724 var = parse_parameter_list(parser, var);
3733 /* finally name it */
3735 if (!ast_value_set_name(var, name)) {
3737 parseerror(parser, "internal error: failed to set name");
3740 /* free the name, ast_value_set_name duplicates */
3747 static bool parse_typedef(parser_t *parser)
3749 ast_value *typevar, *oldtype;
3750 ast_expression *old;
3752 typevar = parse_typename(parser, NULL, NULL);
3757 if ( (old = parser_find_var(parser, typevar->name)) ) {
3758 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
3759 " -> `%s` has been declared here: %s:%i",
3760 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
3761 ast_delete(typevar);
3765 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
3766 parseerror(parser, "type `%s` has already been declared here: %s:%i",
3767 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
3768 ast_delete(typevar);
3772 vec_push(parser->_typedefs, typevar);
3773 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
3775 if (parser->tok != ';') {
3776 parseerror(parser, "expected semicolon after typedef");
3779 if (!parser_next(parser)) {
3780 parseerror(parser, "parse error after typedef");
3787 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref)
3791 ast_expression *old;
3795 ast_value *basetype = NULL;
3797 bool isparam = false;
3798 bool isvector = false;
3799 bool cleanvar = true;
3800 bool wasarray = false;
3804 /* get the first complete variable */
3805 var = parse_typename(parser, &basetype, cached_typedef);
3808 ast_delete(basetype);
3816 /* Part 0: finish the type */
3817 if (parser->tok == '(') {
3818 if (opts_standard == COMPILER_QCC)
3819 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3820 var = parse_parameter_list(parser, var);
3826 /* we only allow 1-dimensional arrays */
3827 if (parser->tok == '[') {
3829 var = parse_arraysize(parser, var);
3835 if (parser->tok == '(' && wasarray) {
3836 parseerror(parser, "arrays as part of a return type is not supported");
3837 /* we'll still parse the type completely for now */
3839 /* for functions returning functions */
3840 while (parser->tok == '(') {
3841 if (opts_standard == COMPILER_QCC)
3842 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3843 var = parse_parameter_list(parser, var);
3850 var->cvq = qualifier;
3851 /* in a noref section we simply bump the usecount */
3852 if (noref || parser->noref)
3856 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3857 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3858 * is then filled with the previous definition and the parameter-names replaced.
3861 /* Deal with end_sys_ vars */
3863 if (!strcmp(var->name, "end_sys_globals")) {
3865 parser->crc_globals = vec_size(parser->globals);
3868 else if (!strcmp(var->name, "end_sys_fields")) {
3870 parser->crc_fields = vec_size(parser->fields);
3873 if (was_end && var->expression.vtype == TYPE_FIELD) {
3874 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3875 "global '%s' hint should not be a field",
3876 parser_tokval(parser)))
3883 if (!nofields && var->expression.vtype == TYPE_FIELD)
3885 /* deal with field declarations */
3886 old = parser_find_field(parser, var->name);
3888 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3889 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3898 parseerror(parser, "field `%s` already declared here: %s:%i",
3899 var->name, ast_ctx(old).file, ast_ctx(old).line);
3904 if (opts_standard == COMPILER_QCC &&
3905 (old = parser_find_global(parser, var->name)))
3907 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3908 parseerror(parser, "field `%s` already declared here: %s:%i",
3909 var->name, ast_ctx(old).file, ast_ctx(old).line);
3916 /* deal with other globals */
3917 old = parser_find_global(parser, var->name);
3918 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3920 /* This is a function which had a prototype */
3921 if (!ast_istype(old, ast_value)) {
3922 parseerror(parser, "internal error: prototype is not an ast_value");
3926 proto = (ast_value*)old;
3927 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3928 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3930 ast_ctx(proto).file, ast_ctx(proto).line);
3934 /* we need the new parameter-names */
3935 for (i = 0; i < vec_size(proto->expression.params); ++i)
3936 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
3944 if (opts_standard == COMPILER_GMQCC) {
3945 parseerror(parser, "global `%s` already declared here: %s:%i",
3946 var->name, ast_ctx(old).file, ast_ctx(old).line);
3950 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
3951 "global `%s` already declared here: %s:%i",
3952 var->name, ast_ctx(old).file, ast_ctx(old).line))
3957 proto = (ast_value*)old;
3958 if (!ast_istype(old, ast_value)) {
3959 parseerror(parser, "internal error: not an ast_value");
3968 if (opts_standard == COMPILER_QCC &&
3969 (old = parser_find_field(parser, var->name)))
3971 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3972 parseerror(parser, "global `%s` already declared here: %s:%i",
3973 var->name, ast_ctx(old).file, ast_ctx(old).line);
3980 else /* it's not a global */
3982 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
3983 if (old && !isparam) {
3984 parseerror(parser, "local `%s` already declared here: %s:%i",
3985 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3989 old = parser_find_local(parser, var->name, 0, &isparam);
3990 if (old && isparam) {
3991 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
3992 "local `%s` is shadowing a parameter", var->name))
3994 parseerror(parser, "local `%s` already declared here: %s:%i",
3995 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3999 if (opts_standard != COMPILER_GMQCC) {
4008 * Create the global/local, and deal with vector types.
4011 if (var->expression.vtype == TYPE_VECTOR)
4013 else if (var->expression.vtype == TYPE_FIELD &&
4014 var->expression.next->expression.vtype == TYPE_VECTOR)
4018 if (!create_vector_members(var, me)) {
4025 /* deal with global variables, fields, functions */
4026 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4027 var->isfield = true;
4028 vec_push(parser->fields, (ast_expression*)var);
4029 util_htset(parser->htfields, var->name, var);
4031 for (i = 0; i < 3; ++i) {
4032 vec_push(parser->fields, (ast_expression*)me[i]);
4033 util_htset(parser->htfields, me[i]->name, me[i]);
4038 vec_push(parser->globals, (ast_expression*)var);
4039 util_htset(parser->htglobals, var->name, var);
4041 for (i = 0; i < 3; ++i) {
4042 vec_push(parser->globals, (ast_expression*)me[i]);
4043 util_htset(parser->htglobals, me[i]->name, me[i]);
4048 vec_push(localblock->locals, var);
4049 parser_addlocal(parser, var->name, (ast_expression*)var);
4051 for (i = 0; i < 3; ++i) {
4052 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4053 ast_block_collect(localblock, (ast_expression*)me[i]);
4059 me[0] = me[1] = me[2] = NULL;
4064 if (var->expression.vtype == TYPE_ARRAY) {
4066 snprintf(name, sizeof(name), "%s##SET", var->name);
4067 if (!parser_create_array_setter(parser, var, name))
4069 snprintf(name, sizeof(name), "%s##GET", var->name);
4070 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4073 else if (!localblock && !nofields &&
4074 var->expression.vtype == TYPE_FIELD &&
4075 var->expression.next->expression.vtype == TYPE_ARRAY)
4078 ast_expression *telem;
4080 ast_value *array = (ast_value*)var->expression.next;
4082 if (!ast_istype(var->expression.next, ast_value)) {
4083 parseerror(parser, "internal error: field element type must be an ast_value");
4087 snprintf(name, sizeof(name), "%s##SETF", var->name);
4088 if (!parser_create_array_field_setter(parser, array, name))
4091 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4092 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4093 tfield->expression.next = telem;
4094 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4095 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4103 if (parser->tok == ';') {
4104 ast_delete(basetype);
4105 if (!parser_next(parser)) {
4106 parseerror(parser, "error after variable declaration");
4112 if (parser->tok == ',')
4116 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4119 parseerror(parser, "missing comma or semicolon while parsing variables");
4123 if (localblock && opts_standard == COMPILER_QCC) {
4124 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4125 "initializing expression turns variable `%s` into a constant in this standard",
4132 if (parser->tok != '{') {
4133 if (parser->tok != '=') {
4134 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4138 if (!parser_next(parser)) {
4139 parseerror(parser, "error parsing initializer");
4143 else if (opts_standard == COMPILER_QCC) {
4144 parseerror(parser, "expected '=' before function body in this standard");
4147 if (parser->tok == '#') {
4148 ast_function *func = NULL;
4151 parseerror(parser, "cannot declare builtins within functions");
4154 if (var->expression.vtype != TYPE_FUNCTION) {
4155 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4158 if (!parser_next(parser)) {
4159 parseerror(parser, "expected builtin number");
4162 if (parser->tok != TOKEN_INTCONST) {
4163 parseerror(parser, "builtin number must be an integer constant");
4166 if (parser_token(parser)->constval.i < 0) {
4167 parseerror(parser, "builtin number must be an integer greater than zero");
4171 if (var->hasvalue) {
4172 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
4173 "builtin `%s` has already been defined\n"
4174 " -> previous declaration here: %s:%i",
4175 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
4179 func = ast_function_new(ast_ctx(var), var->name, var);
4181 parseerror(parser, "failed to allocate function for `%s`", var->name);
4184 vec_push(parser->functions, func);
4186 func->builtin = -parser_token(parser)->constval.i-1;
4189 if (!parser_next(parser)) {
4190 parseerror(parser, "expected comma or semicolon");
4192 ast_function_delete(func);
4193 var->constval.vfunc = NULL;
4197 else if (parser->tok == '{' || parser->tok == '[')
4201 parseerror(parser, "cannot declare functions within functions");
4206 ast_ctx(proto) = parser_ctx(parser);
4208 if (!parse_function_body(parser, var))
4210 ast_delete(basetype);
4211 for (i = 0; i < vec_size(parser->gotos); ++i)
4212 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
4213 vec_free(parser->gotos);
4214 vec_free(parser->labels);
4217 ast_expression *cexp;
4220 cexp = parse_expression_leave(parser, true);
4225 cval = (ast_value*)cexp;
4226 if (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
4227 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
4230 if (opts_standard != COMPILER_GMQCC &&
4231 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4232 qualifier != CV_VAR)
4234 var->cvq = CV_CONST;
4236 var->hasvalue = true;
4237 if (cval->expression.vtype == TYPE_STRING)
4238 var->constval.vstring = parser_strdup(cval->constval.vstring);
4239 else if (cval->expression.vtype == TYPE_FIELD)
4240 var->constval.vfield = cval;
4242 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
4247 shunt sy = { NULL, NULL };
4250 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
4251 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
4252 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
4253 if (!parser_sy_apply_operator(parser, &sy))
4256 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
4257 parseerror(parser, "internal error: leaked operands");
4258 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
4268 if (parser->tok == ',') {
4269 if (!parser_next(parser)) {
4270 parseerror(parser, "expected another variable");
4274 if (parser->tok != TOKEN_IDENT) {
4275 parseerror(parser, "expected another variable");
4278 var = ast_value_copy(basetype);
4280 ast_value_set_name(var, parser_tokval(parser));
4281 if (!parser_next(parser)) {
4282 parseerror(parser, "error parsing variable declaration");
4288 if (parser->tok != ';') {
4289 parseerror(parser, "missing semicolon after variables");
4293 if (!parser_next(parser)) {
4294 parseerror(parser, "parse error after variable declaration");
4298 ast_delete(basetype);
4302 if (cleanvar && var)
4304 ast_delete(basetype);
4308 ast_delete(basetype);
4309 if (cleanvar && var)
4311 if (me[0]) ast_member_delete(me[0]);
4312 if (me[1]) ast_member_delete(me[1]);
4313 if (me[2]) ast_member_delete(me[2]);
4317 static bool parser_global_statement(parser_t *parser)
4321 ast_value *istype = NULL;
4323 if (parser->tok == TOKEN_IDENT)
4324 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
4326 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
4328 return parse_variable(parser, NULL, false, CV_NONE, istype, false);
4330 else if (parse_var_qualifiers(parser, false, &cvq, &noref))
4332 if (cvq == CV_WRONG)
4334 return parse_variable(parser, NULL, true, cvq, NULL, noref);
4336 else if (parser->tok == TOKEN_KEYWORD)
4338 if (!strcmp(parser_tokval(parser), "typedef")) {
4339 if (!parser_next(parser)) {
4340 parseerror(parser, "expected type definition after 'typedef'");
4343 return parse_typedef(parser);
4345 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
4348 else if (parser->tok == '#')
4350 return parse_pragma(parser);
4352 else if (parser->tok == '$')
4354 if (!parser_next(parser)) {
4355 parseerror(parser, "parse error");
4361 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
4367 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
4369 return util_crc16(old, str, strlen(str));
4372 static void progdefs_crc_file(const char *str)
4374 /* write to progdefs.h here */
4378 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
4380 old = progdefs_crc_sum(old, str);
4381 progdefs_crc_file(str);
4385 static void generate_checksum(parser_t *parser)
4387 uint16_t crc = 0xFFFF;
4391 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
4392 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
4394 progdefs_crc_file("\tint\tpad;\n");
4395 progdefs_crc_file("\tint\tofs_return[3];\n");
4396 progdefs_crc_file("\tint\tofs_parm0[3];\n");
4397 progdefs_crc_file("\tint\tofs_parm1[3];\n");
4398 progdefs_crc_file("\tint\tofs_parm2[3];\n");
4399 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4400 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4401 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4402 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4403 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4405 for (i = 0; i < parser->crc_globals; ++i) {
4406 if (!ast_istype(parser->globals[i], ast_value))
4408 value = (ast_value*)(parser->globals[i]);
4409 switch (value->expression.vtype) {
4410 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4411 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4412 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4413 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4415 crc = progdefs_crc_both(crc, "\tint\t");
4418 crc = progdefs_crc_both(crc, value->name);
4419 crc = progdefs_crc_both(crc, ";\n");
4421 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4422 for (i = 0; i < parser->crc_fields; ++i) {
4423 if (!ast_istype(parser->fields[i], ast_value))
4425 value = (ast_value*)(parser->fields[i]);
4426 switch (value->expression.next->expression.vtype) {
4427 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4428 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4429 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4430 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4432 crc = progdefs_crc_both(crc, "\tint\t");
4435 crc = progdefs_crc_both(crc, value->name);
4436 crc = progdefs_crc_both(crc, ";\n");
4438 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4443 static parser_t *parser;
4449 parser = (parser_t*)mem_a(sizeof(parser_t));
4453 memset(parser, 0, sizeof(*parser));
4455 for (i = 0; i < operator_count; ++i) {
4456 if (operators[i].id == opid1('=')) {
4457 parser->assign_op = operators+i;
4461 if (!parser->assign_op) {
4462 printf("internal error: initializing parser: failed to find assign operator\n");
4467 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4468 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4469 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4470 vec_push(parser->_blocktypedefs, 0);
4474 bool parser_compile()
4476 /* initial lexer/parser state */
4477 parser->lex->flags.noops = true;
4479 if (parser_next(parser))
4481 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4483 if (!parser_global_statement(parser)) {
4484 if (parser->tok == TOKEN_EOF)
4485 parseerror(parser, "unexpected eof");
4486 else if (!parser->errors)
4487 parseerror(parser, "there have been errors, bailing out");
4488 lex_close(parser->lex);
4494 parseerror(parser, "parse error");
4495 lex_close(parser->lex);
4500 lex_close(parser->lex);
4503 return !parser->errors;
4506 bool parser_compile_file(const char *filename)
4508 parser->lex = lex_open(filename);
4510 con_err("failed to open file \"%s\"\n", filename);
4513 return parser_compile();
4516 bool parser_compile_string_len(const char *name, const char *str, size_t len)
4518 parser->lex = lex_open_string(str, len, name);
4520 con_err("failed to create lexer for string \"%s\"\n", name);
4523 return parser_compile();
4526 bool parser_compile_string(const char *name, const char *str)
4528 parser->lex = lex_open_string(str, strlen(str), name);
4530 con_err("failed to create lexer for string \"%s\"\n", name);
4533 return parser_compile();
4536 void parser_cleanup()
4539 for (i = 0; i < vec_size(parser->accessors); ++i) {
4540 ast_delete(parser->accessors[i]->constval.vfunc);
4541 parser->accessors[i]->constval.vfunc = NULL;
4542 ast_delete(parser->accessors[i]);
4544 for (i = 0; i < vec_size(parser->functions); ++i) {
4545 ast_delete(parser->functions[i]);
4547 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4548 ast_delete(parser->imm_vector[i]);
4550 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4551 ast_delete(parser->imm_string[i]);
4553 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4554 ast_delete(parser->imm_float[i]);
4556 for (i = 0; i < vec_size(parser->fields); ++i) {
4557 ast_delete(parser->fields[i]);
4559 for (i = 0; i < vec_size(parser->globals); ++i) {
4560 ast_delete(parser->globals[i]);
4562 vec_free(parser->accessors);
4563 vec_free(parser->functions);
4564 vec_free(parser->imm_vector);
4565 vec_free(parser->imm_string);
4566 vec_free(parser->imm_float);
4567 vec_free(parser->globals);
4568 vec_free(parser->fields);
4570 for (i = 0; i < vec_size(parser->variables); ++i)
4571 util_htdel(parser->variables[i]);
4572 vec_free(parser->variables);
4573 vec_free(parser->_blocklocals);
4574 vec_free(parser->_locals);
4576 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4577 ast_delete(parser->_typedefs[i]);
4578 vec_free(parser->_typedefs);
4579 for (i = 0; i < vec_size(parser->typedefs); ++i)
4580 util_htdel(parser->typedefs[i]);
4581 vec_free(parser->typedefs);
4582 vec_free(parser->_blocktypedefs);
4584 vec_free(parser->_block_ctx);
4586 vec_free(parser->labels);
4587 vec_free(parser->gotos);
4592 bool parser_finish(const char *output)
4598 if (!parser->errors)
4600 ir = ir_builder_new("gmqcc_out");
4602 con_out("failed to allocate builder\n");
4606 for (i = 0; i < vec_size(parser->fields); ++i) {
4609 if (!ast_istype(parser->fields[i], ast_value))
4611 field = (ast_value*)parser->fields[i];
4612 hasvalue = field->hasvalue;
4613 field->hasvalue = false;
4614 if (!ast_global_codegen((ast_value*)field, ir, true)) {
4615 con_out("failed to generate field %s\n", field->name);
4616 ir_builder_delete(ir);
4621 ast_expression *subtype;
4622 field->hasvalue = true;
4623 subtype = field->expression.next;
4624 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
4625 if (subtype->expression.vtype == TYPE_FIELD)
4626 ifld->fieldtype = subtype->expression.next->expression.vtype;
4627 else if (subtype->expression.vtype == TYPE_FUNCTION)
4628 ifld->outtype = subtype->expression.next->expression.vtype;
4629 (void)!ir_value_set_field(field->ir_v, ifld);
4632 for (i = 0; i < vec_size(parser->globals); ++i) {
4634 if (!ast_istype(parser->globals[i], ast_value))
4636 asvalue = (ast_value*)(parser->globals[i]);
4637 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
4638 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
4639 "unused global: `%s`", asvalue->name);
4641 if (!ast_global_codegen(asvalue, ir, false)) {
4642 con_out("failed to generate global %s\n", asvalue->name);
4643 ir_builder_delete(ir);
4647 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4648 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
4649 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
4650 ir_builder_delete(ir);
4654 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4655 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
4656 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
4657 ir_builder_delete(ir);
4661 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4662 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
4663 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
4664 ir_builder_delete(ir);
4668 for (i = 0; i < vec_size(parser->globals); ++i) {
4670 if (!ast_istype(parser->globals[i], ast_value))
4672 asvalue = (ast_value*)(parser->globals[i]);
4673 if (!ast_generate_accessors(asvalue, ir)) {
4674 ir_builder_delete(ir);
4678 for (i = 0; i < vec_size(parser->fields); ++i) {
4680 asvalue = (ast_value*)(parser->fields[i]->expression.next);
4682 if (!ast_istype((ast_expression*)asvalue, ast_value))
4684 if (asvalue->expression.vtype != TYPE_ARRAY)
4686 if (!ast_generate_accessors(asvalue, ir)) {
4687 ir_builder_delete(ir);
4691 for (i = 0; i < vec_size(parser->functions); ++i) {
4692 if (!ast_function_codegen(parser->functions[i], ir)) {
4693 con_out("failed to generate function %s\n", parser->functions[i]->name);
4694 ir_builder_delete(ir);
4699 ir_builder_dump(ir, con_out);
4700 for (i = 0; i < vec_size(parser->functions); ++i) {
4701 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4702 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4703 ir_builder_delete(ir);
4710 ir_builder_dump(ir, con_out);
4712 generate_checksum(parser);
4714 if (!ir_builder_generate(ir, output)) {
4715 con_out("*** failed to generate output file\n");
4716 ir_builder_delete(ir);
4721 ir_builder_delete(ir);
4725 con_out("*** there were compile errors\n");