5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
6 * this software and associated documentation files (the "Software"), to deal in
7 * the Software without restriction, including without limitation the rights to
8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is furnished to do
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12 * The above copyright notice and this permission notice shall be included in all
13 * copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 #define PARSER_HT_FIELDS 0
30 #define PARSER_HT_GLOBALS 1
31 /* beginning of locals */
32 #define PARSER_HT_LOCALS 2
34 #define PARSER_HT_SIZE 1024
35 #define TYPEDEF_HT_SIZE 16
41 ast_expression **globals;
42 ast_expression **fields;
43 ast_function **functions;
44 ast_value **imm_float;
45 ast_value **imm_string;
46 ast_value **imm_vector;
49 /* must be deleted first, they reference immediates and values */
50 ast_value **accessors;
52 ast_value *imm_float_zero;
53 ast_value *imm_float_one;
54 ast_value *imm_vector_zero;
59 ast_function *function;
61 /* A list of hashtables for each scope */
67 /* not to be used directly, we use the hash table */
68 ast_expression **_locals;
70 ast_value **_typedefs;
71 size_t *_blocktypedefs;
75 /* we store the '=' operator info */
76 const oper_info *assign_op;
78 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
79 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
80 * anything else: type error
85 static void parser_enterblock(parser_t *parser);
86 static bool parser_leaveblock(parser_t *parser);
87 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
88 static bool parse_typedef(parser_t *parser);
89 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, bool is_const, ast_value *cached_typedef);
90 static ast_block* parse_block(parser_t *parser, bool warnreturn);
91 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn);
92 static ast_expression* parse_statement_or_block(parser_t *parser);
93 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
94 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
95 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
97 static void parseerror(parser_t *parser, const char *fmt, ...)
104 con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap);
108 /* returns true if it counts as an error */
109 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
112 int lvl = LVL_WARNING;
114 if (!OPTS_WARN(warntype))
123 con_vprintmsg(lvl, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "warning", fmt, ap);
129 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
132 int lvl = LVL_WARNING;
134 if (!OPTS_WARN(warntype))
141 con_vprintmsg(lvl, ctx.file, ctx.line, "warning", fmt, ap);
147 /**********************************************************************
148 * some maths used for constant folding
151 vector vec3_add(vector a, vector b)
160 vector vec3_sub(vector a, vector b)
169 qcfloat vec3_mulvv(vector a, vector b)
171 return (a.x * b.x + a.y * b.y + a.z * b.z);
174 vector vec3_mulvf(vector a, float b)
183 /**********************************************************************
187 bool parser_next(parser_t *parser)
189 /* lex_do kills the previous token */
190 parser->tok = lex_do(parser->lex);
191 if (parser->tok == TOKEN_EOF)
193 if (parser->tok >= TOKEN_ERROR) {
194 parseerror(parser, "lex error");
200 #define parser_tokval(p) ((p)->lex->tok.value)
201 #define parser_token(p) (&((p)->lex->tok))
202 #define parser_ctx(p) ((p)->lex->tok.ctx)
204 static ast_value* parser_const_float(parser_t *parser, double d)
208 for (i = 0; i < vec_size(parser->imm_float); ++i) {
209 const double compare = parser->imm_float[i]->constval.vfloat;
210 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
211 return parser->imm_float[i];
213 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
215 out->constval.vfloat = d;
216 vec_push(parser->imm_float, out);
220 static ast_value* parser_const_float_0(parser_t *parser)
222 if (!parser->imm_float_zero)
223 parser->imm_float_zero = parser_const_float(parser, 0);
224 return parser->imm_float_zero;
227 static ast_value* parser_const_float_1(parser_t *parser)
229 if (!parser->imm_float_one)
230 parser->imm_float_one = parser_const_float(parser, 1);
231 return parser->imm_float_one;
234 static char *parser_strdup(const char *str)
237 /* actually dup empty strings */
238 char *out = mem_a(1);
242 return util_strdup(str);
245 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
249 for (i = 0; i < vec_size(parser->imm_string); ++i) {
250 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
251 return parser->imm_string[i];
255 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
256 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
258 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
260 out->constval.vstring = parser_strdup(str);
261 vec_push(parser->imm_string, out);
265 static ast_value* parser_const_vector(parser_t *parser, vector v)
269 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
270 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
271 return parser->imm_vector[i];
273 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
275 out->constval.vvec = v;
276 vec_push(parser->imm_vector, out);
280 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
286 return parser_const_vector(parser, v);
289 static ast_value* parser_const_vector_0(parser_t *parser)
291 if (!parser->imm_vector_zero)
292 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
293 return parser->imm_vector_zero;
296 static ast_expression* parser_find_field(parser_t *parser, const char *name)
298 return util_htget(parser->htfields, name);
301 static ast_expression* parser_find_global(parser_t *parser, const char *name)
303 return util_htget(parser->htglobals, name);
306 static ast_expression* parser_find_param(parser_t *parser, const char *name)
310 if (!parser->function)
312 fun = parser->function->vtype;
313 for (i = 0; i < vec_size(fun->expression.params); ++i) {
314 if (!strcmp(fun->expression.params[i]->name, name))
315 return (ast_expression*)(fun->expression.params[i]);
320 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
325 hash = util_hthash(parser->htglobals, name);
328 for (i = vec_size(parser->variables); i > upto;) {
330 if ( (e = util_htgeth(parser->variables[i], name, hash)) )
334 return parser_find_param(parser, name);
337 static ast_expression* parser_find_var(parser_t *parser, const char *name)
341 v = parser_find_local(parser, name, 0, &dummy);
342 if (!v) v = parser_find_global(parser, name);
346 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
350 hash = util_hthash(parser->typedefs[0], name);
352 for (i = vec_size(parser->typedefs); i > upto;) {
354 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
362 size_t etype; /* 0 = expression, others are operators */
366 ast_block *block; /* for commas and function calls */
375 #define SY_PAREN_EXPR '('
376 #define SY_PAREN_FUNC 'f'
377 #define SY_PAREN_INDEX '['
379 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
390 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
394 e.out = (ast_expression*)v;
401 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
403 e.etype = 1 + (op - operators);
412 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
424 # define DEBUGSHUNTDO(x) x
426 # define DEBUGSHUNTDO(x)
429 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
430 * so we need to rotate it to become ent.(foo[n]).
432 static bool rotate_entfield_array_index_nodes(ast_expression **out)
434 ast_array_index *index;
435 ast_entfield *entfield;
439 ast_expression *entity;
441 lex_ctx ctx = ast_ctx(*out);
443 if (!ast_istype(*out, ast_array_index))
445 index = (ast_array_index*)*out;
447 if (!ast_istype(index->array, ast_entfield))
449 entfield = (ast_entfield*)index->array;
451 if (!ast_istype(entfield->field, ast_value))
453 field = (ast_value*)entfield->field;
456 entity = entfield->entity;
460 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
461 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
462 *out = (ast_expression*)entfield;
467 static bool parser_sy_pop(parser_t *parser, shunt *sy)
471 ast_expression *out = NULL;
472 ast_expression *exprs[3];
473 ast_block *blocks[3];
474 ast_value *asvalue[3];
475 size_t i, assignop, addop, subop;
476 qcint generated_op = 0;
481 if (!vec_size(sy->ops)) {
482 parseerror(parser, "internal error: missing operator");
486 if (vec_last(sy->ops).paren) {
487 parseerror(parser, "unmatched parenthesis");
491 op = &operators[vec_last(sy->ops).etype - 1];
492 ctx = vec_last(sy->ops).ctx;
494 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
496 if (vec_size(sy->out) < op->operands) {
497 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
498 op->op, (int)op->id);
502 vec_shrinkby(sy->ops, 1);
504 vec_shrinkby(sy->out, op->operands);
505 for (i = 0; i < op->operands; ++i) {
506 exprs[i] = sy->out[vec_size(sy->out)+i].out;
507 blocks[i] = sy->out[vec_size(sy->out)+i].block;
508 asvalue[i] = (ast_value*)exprs[i];
511 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
512 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
516 #define NotSameType(T) \
517 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
518 exprs[0]->expression.vtype != T)
519 #define CanConstFold1(A) \
520 (ast_istype((A), ast_value) && ((ast_value*)(A))->isconst)
521 #define CanConstFold(A, B) \
522 (CanConstFold1(A) && CanConstFold1(B))
523 #define ConstV(i) (asvalue[(i)]->constval.vvec)
524 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
525 #define ConstS(i) (asvalue[(i)]->constval.vstring)
529 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
533 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
534 if (exprs[1]->expression.vtype != TYPE_FIELD) {
535 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
538 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
540 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
541 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
545 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
551 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
552 !(exprs[0]->expression.vtype == TYPE_FIELD &&
553 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
555 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
556 parseerror(parser, "cannot index value of type %s", ty1);
559 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
560 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
561 parseerror(parser, "index must be of type float, not %s", ty1);
564 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
565 if (rotate_entfield_array_index_nodes(&out))
567 if (opts_standard != COMPILER_GMQCC) {
568 /* this error doesn't need to make us bail out */
569 (void)!parsewarning(parser, WARN_EXTENSIONS,
570 "accessing array-field members of an entity without parenthesis\n"
571 " -> this is an extension from -std=gmqcc");
578 vec_push(blocks[0]->exprs, exprs[1]);
580 blocks[0] = ast_block_new(ctx);
581 vec_push(blocks[0]->exprs, exprs[0]);
582 vec_push(blocks[0]->exprs, exprs[1]);
584 if (!ast_block_set_type(blocks[0], exprs[1]))
587 vec_push(sy->out, syblock(ctx, blocks[0]));
591 switch (exprs[0]->expression.vtype) {
593 if (CanConstFold1(exprs[0]))
594 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
596 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
597 (ast_expression*)parser_const_float_0(parser),
601 if (CanConstFold1(exprs[0]))
602 out = (ast_expression*)parser_const_vector_f(parser,
603 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
605 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
606 (ast_expression*)parser_const_vector_0(parser),
610 parseerror(parser, "invalid types used in expression: cannot negate type %s",
611 type_name[exprs[0]->expression.vtype]);
617 switch (exprs[0]->expression.vtype) {
619 if (CanConstFold1(exprs[0]))
620 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
622 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
625 if (CanConstFold1(exprs[0]))
626 out = (ast_expression*)parser_const_float(parser,
627 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
629 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
632 if (CanConstFold1(exprs[0]))
633 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
635 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
637 /* we don't constant-fold NOT for these types */
639 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
642 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
645 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
646 type_name[exprs[0]->expression.vtype]);
652 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
653 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
655 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
656 type_name[exprs[0]->expression.vtype],
657 type_name[exprs[1]->expression.vtype]);
660 switch (exprs[0]->expression.vtype) {
662 if (CanConstFold(exprs[0], exprs[1]))
664 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
667 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
670 if (CanConstFold(exprs[0], exprs[1]))
671 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
673 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
676 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
677 type_name[exprs[0]->expression.vtype],
678 type_name[exprs[1]->expression.vtype]);
683 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
684 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
686 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
687 type_name[exprs[1]->expression.vtype],
688 type_name[exprs[0]->expression.vtype]);
691 switch (exprs[0]->expression.vtype) {
693 if (CanConstFold(exprs[0], exprs[1]))
694 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
696 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
699 if (CanConstFold(exprs[0], exprs[1]))
700 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
702 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
705 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
706 type_name[exprs[1]->expression.vtype],
707 type_name[exprs[0]->expression.vtype]);
712 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
713 exprs[0]->expression.vtype != TYPE_VECTOR &&
714 exprs[0]->expression.vtype != TYPE_FLOAT &&
715 exprs[1]->expression.vtype != TYPE_VECTOR &&
716 exprs[1]->expression.vtype != TYPE_FLOAT)
718 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
719 type_name[exprs[1]->expression.vtype],
720 type_name[exprs[0]->expression.vtype]);
723 switch (exprs[0]->expression.vtype) {
725 if (exprs[1]->expression.vtype == TYPE_VECTOR)
727 if (CanConstFold(exprs[0], exprs[1]))
728 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
730 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
734 if (CanConstFold(exprs[0], exprs[1]))
735 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
737 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
741 if (exprs[1]->expression.vtype == TYPE_FLOAT)
743 if (CanConstFold(exprs[0], exprs[1]))
744 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
746 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
750 if (CanConstFold(exprs[0], exprs[1]))
751 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
753 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
757 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
758 type_name[exprs[1]->expression.vtype],
759 type_name[exprs[0]->expression.vtype]);
764 if (NotSameType(TYPE_FLOAT)) {
765 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
766 type_name[exprs[0]->expression.vtype],
767 type_name[exprs[1]->expression.vtype]);
770 if (CanConstFold(exprs[0], exprs[1]))
771 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
773 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
777 parseerror(parser, "qc does not have a modulo operator");
781 if (NotSameType(TYPE_FLOAT)) {
782 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
783 type_name[exprs[0]->expression.vtype],
784 type_name[exprs[1]->expression.vtype]);
787 if (CanConstFold(exprs[0], exprs[1]))
788 out = (ast_expression*)parser_const_float(parser,
789 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
790 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
792 out = (ast_expression*)ast_binary_new(ctx,
793 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
797 parseerror(parser, "TODO: bitxor");
802 case opid3('<','<','='):
803 case opid3('>','>','='):
804 parseerror(parser, "TODO: shifts");
808 generated_op += 1; /* INSTR_OR */
810 generated_op += INSTR_AND;
812 if (NotSameType(TYPE_FLOAT)) {
813 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
814 type_name[exprs[0]->expression.vtype],
815 type_name[exprs[1]->expression.vtype]);
816 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
817 parseerror(parser, "TODO: optional early out");
821 if (opts_standard == COMPILER_GMQCC)
822 con_out("TODO: early out logic\n");
823 if (CanConstFold(exprs[0], exprs[1]))
824 out = (ast_expression*)parser_const_float(parser,
825 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
827 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
831 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
832 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
833 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
834 parseerror(parser, "iperands of ternary expression must have the same type, got %s and %s", ty1, ty2);
837 if (CanConstFold1(exprs[0]))
838 out = (ConstF(0) ? exprs[1] : exprs[2]);
840 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
844 generated_op += 1; /* INSTR_GT */
846 generated_op += 1; /* INSTR_LT */
847 case opid2('>', '='):
848 generated_op += 1; /* INSTR_GE */
849 case opid2('<', '='):
850 generated_op += INSTR_LE;
851 if (NotSameType(TYPE_FLOAT)) {
852 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
853 type_name[exprs[0]->expression.vtype],
854 type_name[exprs[1]->expression.vtype]);
857 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
859 case opid2('!', '='):
860 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
861 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
862 type_name[exprs[0]->expression.vtype],
863 type_name[exprs[1]->expression.vtype]);
866 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
868 case opid2('=', '='):
869 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
870 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
871 type_name[exprs[0]->expression.vtype],
872 type_name[exprs[1]->expression.vtype]);
875 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
879 if (ast_istype(exprs[0], ast_entfield)) {
880 ast_expression *field = ((ast_entfield*)exprs[0])->field;
881 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
882 exprs[0]->expression.vtype == TYPE_FIELD &&
883 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
885 assignop = type_storep_instr[TYPE_VECTOR];
888 assignop = type_storep_instr[exprs[0]->expression.vtype];
889 if (!ast_compare_type(field->expression.next, exprs[1])) {
890 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
891 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
892 if (opts_standard == COMPILER_QCC &&
893 field->expression.next->expression.vtype == TYPE_FUNCTION &&
894 exprs[1]->expression.vtype == TYPE_FUNCTION)
896 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
897 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
903 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
908 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
909 exprs[0]->expression.vtype == TYPE_FIELD &&
910 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
912 assignop = type_store_instr[TYPE_VECTOR];
915 assignop = type_store_instr[exprs[0]->expression.vtype];
918 if (assignop == AINSTR_END) {
919 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
920 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
921 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
923 else if (!ast_compare_type(exprs[0], exprs[1])) {
924 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
925 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
926 if (opts_standard == COMPILER_QCC &&
927 exprs[0]->expression.vtype == TYPE_FUNCTION &&
928 exprs[1]->expression.vtype == TYPE_FUNCTION)
930 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
931 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
937 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
940 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
942 case opid3('+','+','P'):
943 case opid3('-','-','P'):
945 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
946 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
947 parseerror(parser, "invalid type for prefix increment: %s", ty1);
950 if (op->id == opid3('+','+','P'))
954 if (ast_istype(exprs[0], ast_entfield)) {
955 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
957 (ast_expression*)parser_const_float_1(parser));
959 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
961 (ast_expression*)parser_const_float_1(parser));
964 case opid3('S','+','+'):
965 case opid3('S','-','-'):
967 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
968 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
969 parseerror(parser, "invalid type for suffix increment: %s", ty1);
972 if (op->id == opid3('S','+','+')) {
979 if (ast_istype(exprs[0], ast_entfield)) {
980 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
982 (ast_expression*)parser_const_float_1(parser));
984 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
986 (ast_expression*)parser_const_float_1(parser));
990 out = (ast_expression*)ast_binary_new(ctx, subop,
992 (ast_expression*)parser_const_float_1(parser));
996 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
997 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
999 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1000 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1001 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1005 if (ast_istype(exprs[0], ast_entfield))
1006 assignop = type_storep_instr[exprs[0]->expression.vtype];
1008 assignop = type_store_instr[exprs[0]->expression.vtype];
1009 switch (exprs[0]->expression.vtype) {
1011 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1012 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1013 exprs[0], exprs[1]);
1016 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1017 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1018 exprs[0], exprs[1]);
1021 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1022 type_name[exprs[0]->expression.vtype],
1023 type_name[exprs[1]->expression.vtype]);
1027 case opid2('*','='):
1028 case opid2('/','='):
1029 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1030 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1031 exprs[0]->expression.vtype == TYPE_VECTOR))
1033 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1034 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1035 parseerror(parser, "invalid types used in expression: %s and %s",
1039 if (ast_istype(exprs[0], ast_entfield))
1040 assignop = type_storep_instr[exprs[0]->expression.vtype];
1042 assignop = type_store_instr[exprs[0]->expression.vtype];
1043 switch (exprs[0]->expression.vtype) {
1045 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1046 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1047 exprs[0], exprs[1]);
1050 if (op->id == opid2('*','=')) {
1051 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1052 exprs[0], exprs[1]);
1054 /* there's no DIV_VF */
1055 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1056 (ast_expression*)parser_const_float_1(parser),
1060 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1065 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1066 type_name[exprs[0]->expression.vtype],
1067 type_name[exprs[1]->expression.vtype]);
1071 case opid2('&','='):
1072 case opid2('|','='):
1073 if (NotSameType(TYPE_FLOAT)) {
1074 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1075 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1076 parseerror(parser, "invalid types used in expression: %s and %s",
1080 if (ast_istype(exprs[0], ast_entfield))
1081 assignop = type_storep_instr[exprs[0]->expression.vtype];
1083 assignop = type_store_instr[exprs[0]->expression.vtype];
1084 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1085 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1086 exprs[0], exprs[1]);
1088 case opid3('&','~','='):
1089 /* This is like: a &= ~(b);
1090 * But QC has no bitwise-not, so we implement it as
1093 if (NotSameType(TYPE_FLOAT)) {
1094 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1095 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1096 parseerror(parser, "invalid types used in expression: %s and %s",
1100 if (ast_istype(exprs[0], ast_entfield))
1101 assignop = type_storep_instr[exprs[0]->expression.vtype];
1103 assignop = type_store_instr[exprs[0]->expression.vtype];
1104 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1107 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1113 parseerror(parser, "failed to apply operand %s", op->op);
1117 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1118 vec_push(sy->out, syexp(ctx, out));
1122 static bool parser_close_call(parser_t *parser, shunt *sy)
1124 /* was a function call */
1125 ast_expression *fun;
1131 vec_shrinkby(sy->ops, 1);
1132 fid = sy->ops[vec_size(sy->ops)].off;
1134 /* out[fid] is the function
1135 * everything above is parameters...
1136 * 0 params = nothing
1137 * 1 params = ast_expression
1141 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1142 parseerror(parser, "internal error: function call needs function and parameter list...");
1146 fun = sy->out[fid].out;
1148 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1150 parseerror(parser, "out of memory");
1154 if (fid+1 == vec_size(sy->out)) {
1157 } else if (fid+2 == vec_size(sy->out)) {
1159 vec_shrinkby(sy->out, 1);
1160 params = sy->out[vec_size(sy->out)].block;
1164 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1166 paramcount = vec_size(params->exprs);
1167 call->params = params->exprs;
1168 params->exprs = NULL;
1171 if (!ast_call_check_types(call))
1174 parseerror(parser, "invalid function call");
1178 /* overwrite fid, the function, with a call */
1179 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1181 if (fun->expression.vtype != TYPE_FUNCTION) {
1182 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1186 if (!fun->expression.next) {
1187 parseerror(parser, "could not determine function return type");
1190 if (vec_size(fun->expression.params) != paramcount &&
1191 !(fun->expression.variadic &&
1192 vec_size(fun->expression.params) < paramcount))
1195 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1197 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1198 if (opts_standard == COMPILER_GMQCC)
1201 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1202 " -> `%s` has been declared here: %s:%i",
1203 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1204 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1206 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1207 " -> `%s` has been declared here: %s:%i",
1208 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1209 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1215 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1216 "too %s parameters for call to %s: expected %i, got %i\n"
1217 " -> `%s` has been declared here: %s:%i",
1218 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1219 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1221 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1222 "too %s parameters for function call: expected %i, got %i\n"
1223 " -> `%s` has been declared here: %s:%i",
1224 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1225 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1233 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1235 if (!vec_size(sy->ops)) {
1236 parseerror(parser, "unmatched closing paren");
1239 /* this would for bit a + (x) because there are no operators inside (x)
1240 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1241 parseerror(parser, "empty parenthesis expression");
1245 while (vec_size(sy->ops)) {
1246 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1247 if (!parser_close_call(parser, sy))
1251 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1252 vec_shrinkby(sy->ops, 1);
1253 return !functions_only;
1255 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1258 /* pop off the parenthesis */
1259 vec_shrinkby(sy->ops, 1);
1260 /* then apply the index operator */
1261 if (!parser_sy_pop(parser, sy))
1265 if (!parser_sy_pop(parser, sy))
1271 static void parser_reclassify_token(parser_t *parser)
1274 for (i = 0; i < operator_count; ++i) {
1275 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1276 parser->tok = TOKEN_OPERATOR;
1282 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1284 ast_expression *expr = NULL;
1286 bool wantop = false;
1287 bool gotmemberof = false;
1289 /* count the parens because an if starts with one, so the
1290 * end of a condition is an unmatched closing paren
1298 parser->lex->flags.noops = false;
1300 parser_reclassify_token(parser);
1305 gotmemberof = false;
1307 parser->memberof = 0;
1309 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1310 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1312 /* a translatable string */
1316 parseerror(parser, "expected operator or end of statement, got constant");
1320 parser->lex->flags.noops = true;
1321 if (!parser_next(parser) || parser->tok != '(') {
1322 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1325 parser->lex->flags.noops = false;
1326 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1327 parseerror(parser, "expected a constant string in translatable-string extension");
1330 val = parser_const_string(parser, parser_tokval(parser), true);
1334 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1335 DEBUGSHUNTDO(con_out("push string\n"));
1337 if (!parser_next(parser) || parser->tok != ')') {
1338 parseerror(parser, "expected closing paren after translatable string");
1342 else if (parser->tok == TOKEN_IDENT)
1344 ast_expression *var;
1346 parseerror(parser, "expected operator or end of statement");
1351 if (opts_standard == COMPILER_GMQCC)
1353 if (parser->memberof == TYPE_ENTITY) {
1354 /* still get vars first since there could be a fieldpointer */
1355 var = parser_find_var(parser, parser_tokval(parser));
1357 var = parser_find_field(parser, parser_tokval(parser));
1359 else if (parser->memberof == TYPE_VECTOR)
1361 parseerror(parser, "TODO: implement effective vector member access");
1364 else if (parser->memberof) {
1365 parseerror(parser, "namespace for member not found");
1369 var = parser_find_var(parser, parser_tokval(parser));
1371 var = parser_find_var(parser, parser_tokval(parser));
1373 var = parser_find_field(parser, parser_tokval(parser));
1376 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1379 if (ast_istype(var, ast_value))
1380 ((ast_value*)var)->uses++;
1381 vec_push(sy.out, syexp(parser_ctx(parser), var));
1382 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1384 else if (parser->tok == TOKEN_FLOATCONST) {
1387 parseerror(parser, "expected operator or end of statement, got constant");
1391 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1394 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1395 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1397 else if (parser->tok == TOKEN_INTCONST) {
1400 parseerror(parser, "expected operator or end of statement, got constant");
1404 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1407 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1408 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1410 else if (parser->tok == TOKEN_STRINGCONST) {
1413 parseerror(parser, "expected operator or end of statement, got constant");
1417 val = parser_const_string(parser, parser_tokval(parser), false);
1420 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1421 DEBUGSHUNTDO(con_out("push string\n"));
1423 else if (parser->tok == TOKEN_VECTORCONST) {
1426 parseerror(parser, "expected operator or end of statement, got constant");
1430 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1433 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1434 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1435 parser_token(parser)->constval.v.x,
1436 parser_token(parser)->constval.v.y,
1437 parser_token(parser)->constval.v.z));
1439 else if (parser->tok == '(') {
1440 parseerror(parser, "internal error: '(' should be classified as operator");
1443 else if (parser->tok == '[') {
1444 parseerror(parser, "internal error: '[' should be classified as operator");
1447 else if (parser->tok == ')') {
1449 DEBUGSHUNTDO(con_out("do[op] )\n"));
1453 /* we do expect an operator next */
1454 /* closing an opening paren */
1455 if (!parser_close_paren(parser, &sy, false))
1458 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1462 /* allowed for function calls */
1463 if (!parser_close_paren(parser, &sy, true))
1468 else if (parser->tok == ']') {
1470 parseerror(parser, "operand expected");
1474 if (!parser_close_paren(parser, &sy, false))
1478 else if (parser->tok != TOKEN_OPERATOR) {
1480 parseerror(parser, "expected operator or end of statement");
1487 /* classify the operator */
1488 const oper_info *op;
1489 const oper_info *olast = NULL;
1491 for (o = 0; o < operator_count; ++o) {
1492 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1493 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1494 !strcmp(parser_tokval(parser), operators[o].op))
1499 if (o == operator_count) {
1500 /* no operator found... must be the end of the statement */
1503 /* found an operator */
1506 /* when declaring variables, a comma starts a new variable */
1507 if (op->id == opid1(',') && !parens && stopatcomma) {
1508 /* fixup the token */
1513 /* a colon without a pervious question mark cannot be a ternary */
1514 if (!ternaries && op->id == opid2(':','?')) {
1519 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1520 olast = &operators[vec_last(sy.ops).etype-1];
1523 (op->prec < olast->prec) ||
1524 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1526 if (!parser_sy_pop(parser, &sy))
1528 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1529 olast = &operators[vec_last(sy.ops).etype-1];
1534 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1535 /* for gmqcc standard: open up the namespace of the previous type */
1536 ast_expression *prevex = vec_last(sy.out).out;
1538 parseerror(parser, "unexpected member operator");
1541 if (prevex->expression.vtype == TYPE_ENTITY)
1542 parser->memberof = TYPE_ENTITY;
1543 else if (prevex->expression.vtype == TYPE_VECTOR)
1544 parser->memberof = TYPE_VECTOR;
1546 parseerror(parser, "type error: type has no members");
1552 if (op->id == opid1('(')) {
1554 size_t sycount = vec_size(sy.out);
1555 DEBUGSHUNTDO(con_out("push [op] (\n"));
1557 /* we expected an operator, this is the function-call operator */
1558 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1561 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1562 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1565 } else if (op->id == opid1('[')) {
1567 parseerror(parser, "unexpected array subscript");
1571 /* push both the operator and the paren, this makes life easier */
1572 vec_push(sy.ops, syop(parser_ctx(parser), op));
1573 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1575 } else if (op->id == opid2('?',':')) {
1577 vec_push(sy.ops, syop(parser_ctx(parser), op));
1580 } else if (op->id == opid2(':','?')) {
1581 /* we don't push this operator */
1585 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1586 vec_push(sy.ops, syop(parser_ctx(parser), op));
1587 wantop = !!(op->flags & OP_SUFFIX);
1590 if (!parser_next(parser)) {
1593 if (parser->tok == ';' ||
1594 (!parens && parser->tok == ']'))
1600 while (vec_size(sy.ops)) {
1601 if (!parser_sy_pop(parser, &sy))
1605 parser->lex->flags.noops = true;
1606 if (!vec_size(sy.out)) {
1607 parseerror(parser, "empty expression");
1610 expr = sy.out[0].out;
1613 DEBUGSHUNTDO(con_out("shunt done\n"));
1617 parser->lex->flags.noops = true;
1623 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1625 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1628 if (!parser_next(parser)) {
1635 static void parser_enterblock(parser_t *parser)
1637 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1638 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1639 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1640 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1643 static bool parser_leaveblock(parser_t *parser)
1646 size_t locals, typedefs;
1648 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1649 parseerror(parser, "internal error: parser_leaveblock with no block");
1653 util_htdel(vec_last(parser->variables));
1654 vec_pop(parser->variables);
1655 if (!vec_size(parser->_blocklocals)) {
1656 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1660 locals = vec_last(parser->_blocklocals);
1661 vec_pop(parser->_blocklocals);
1662 while (vec_size(parser->_locals) != locals) {
1663 ast_expression *e = vec_last(parser->_locals);
1664 ast_value *v = (ast_value*)e;
1665 vec_pop(parser->_locals);
1666 if (ast_istype(e, ast_value) && !v->uses) {
1667 if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
1672 typedefs = vec_last(parser->_blocktypedefs);
1673 while (vec_size(parser->_typedefs) != typedefs) {
1674 ast_delete(vec_last(parser->_typedefs));
1675 vec_pop(parser->_typedefs);
1677 util_htdel(vec_last(parser->typedefs));
1678 vec_pop(parser->typedefs);
1683 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1685 vec_push(parser->_locals, e);
1686 util_htset(vec_last(parser->variables), name, (void*)e);
1689 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1692 ast_expression *cond, *ontrue, *onfalse = NULL;
1695 lex_ctx ctx = parser_ctx(parser);
1697 (void)block; /* not touching */
1699 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1700 if (!parser_next(parser)) {
1701 parseerror(parser, "expected condition or 'not'");
1704 if (parser->tok == TOKEN_KEYWORD && !strcmp(parser_tokval(parser), "not")) {
1706 if (!parser_next(parser)) {
1707 parseerror(parser, "expected condition in parenthesis");
1711 if (parser->tok != '(') {
1712 parseerror(parser, "expected 'if' condition in parenthesis");
1715 /* parse into the expression */
1716 if (!parser_next(parser)) {
1717 parseerror(parser, "expected 'if' condition after opening paren");
1720 /* parse the condition */
1721 cond = parse_expression_leave(parser, false);
1725 if (parser->tok != ')') {
1726 parseerror(parser, "expected closing paren after 'if' condition");
1730 /* parse into the 'then' branch */
1731 if (!parser_next(parser)) {
1732 parseerror(parser, "expected statement for on-true branch of 'if'");
1736 ontrue = parse_statement_or_block(parser);
1741 /* check for an else */
1742 if (!strcmp(parser_tokval(parser), "else")) {
1743 /* parse into the 'else' branch */
1744 if (!parser_next(parser)) {
1745 parseerror(parser, "expected on-false branch after 'else'");
1750 onfalse = parse_statement_or_block(parser);
1759 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1761 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1762 *out = (ast_expression*)ifthen;
1766 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1769 ast_expression *cond, *ontrue;
1771 lex_ctx ctx = parser_ctx(parser);
1773 (void)block; /* not touching */
1775 /* skip the 'while' and check for opening paren */
1776 if (!parser_next(parser) || parser->tok != '(') {
1777 parseerror(parser, "expected 'while' condition in parenthesis");
1780 /* parse into the expression */
1781 if (!parser_next(parser)) {
1782 parseerror(parser, "expected 'while' condition after opening paren");
1785 /* parse the condition */
1786 cond = parse_expression_leave(parser, false);
1790 if (parser->tok != ')') {
1791 parseerror(parser, "expected closing paren after 'while' condition");
1795 /* parse into the 'then' branch */
1796 if (!parser_next(parser)) {
1797 parseerror(parser, "expected while-loop body");
1801 ontrue = parse_statement_or_block(parser);
1807 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1808 *out = (ast_expression*)aloop;
1812 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1815 ast_expression *cond, *ontrue;
1817 lex_ctx ctx = parser_ctx(parser);
1819 (void)block; /* not touching */
1821 /* skip the 'do' and get the body */
1822 if (!parser_next(parser)) {
1823 parseerror(parser, "expected loop body");
1826 ontrue = parse_statement_or_block(parser);
1830 /* expect the "while" */
1831 if (parser->tok != TOKEN_KEYWORD ||
1832 strcmp(parser_tokval(parser), "while"))
1834 parseerror(parser, "expected 'while' and condition");
1839 /* skip the 'while' and check for opening paren */
1840 if (!parser_next(parser) || parser->tok != '(') {
1841 parseerror(parser, "expected 'while' condition in parenthesis");
1845 /* parse into the expression */
1846 if (!parser_next(parser)) {
1847 parseerror(parser, "expected 'while' condition after opening paren");
1851 /* parse the condition */
1852 cond = parse_expression_leave(parser, false);
1856 if (parser->tok != ')') {
1857 parseerror(parser, "expected closing paren after 'while' condition");
1863 if (!parser_next(parser) || parser->tok != ';') {
1864 parseerror(parser, "expected semicolon after condition");
1870 if (!parser_next(parser)) {
1871 parseerror(parser, "parse error");
1877 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1878 *out = (ast_expression*)aloop;
1882 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1885 ast_expression *initexpr, *cond, *increment, *ontrue;
1889 lex_ctx ctx = parser_ctx(parser);
1891 parser_enterblock(parser);
1898 /* skip the 'while' and check for opening paren */
1899 if (!parser_next(parser) || parser->tok != '(') {
1900 parseerror(parser, "expected 'for' expressions in parenthesis");
1903 /* parse into the expression */
1904 if (!parser_next(parser)) {
1905 parseerror(parser, "expected 'for' initializer after opening paren");
1910 if (parser->tok == TOKEN_IDENT)
1911 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
1913 if (typevar || parser->tok == TOKEN_TYPENAME) {
1914 if (opts_standard != COMPILER_GMQCC) {
1915 if (parsewarning(parser, WARN_EXTENSIONS,
1916 "current standard does not allow variable declarations in for-loop initializers"))
1920 parseerror(parser, "TODO: assignment of new variables to be non-const");
1922 if (!parse_variable(parser, block, true, false, typevar))
1925 else if (parser->tok != ';')
1927 initexpr = parse_expression_leave(parser, false);
1932 /* move on to condition */
1933 if (parser->tok != ';') {
1934 parseerror(parser, "expected semicolon after for-loop initializer");
1937 if (!parser_next(parser)) {
1938 parseerror(parser, "expected for-loop condition");
1942 /* parse the condition */
1943 if (parser->tok != ';') {
1944 cond = parse_expression_leave(parser, false);
1949 /* move on to incrementor */
1950 if (parser->tok != ';') {
1951 parseerror(parser, "expected semicolon after for-loop initializer");
1954 if (!parser_next(parser)) {
1955 parseerror(parser, "expected for-loop condition");
1959 /* parse the incrementor */
1960 if (parser->tok != ')') {
1961 increment = parse_expression_leave(parser, false);
1964 if (!ast_istype(increment, ast_store) &&
1965 !ast_istype(increment, ast_call) &&
1966 !ast_istype(increment, ast_binstore))
1968 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
1974 if (parser->tok != ')') {
1975 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1978 /* parse into the 'then' branch */
1979 if (!parser_next(parser)) {
1980 parseerror(parser, "expected for-loop body");
1983 ontrue = parse_statement_or_block(parser);
1988 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1989 *out = (ast_expression*)aloop;
1991 if (!parser_leaveblock(parser))
1995 if (initexpr) ast_delete(initexpr);
1996 if (cond) ast_delete(cond);
1997 if (increment) ast_delete(increment);
1998 (void)!parser_leaveblock(parser);
2002 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2004 ast_expression *exp = NULL;
2005 ast_return *ret = NULL;
2006 ast_value *expected = parser->function->vtype;
2008 (void)block; /* not touching */
2010 if (!parser_next(parser)) {
2011 parseerror(parser, "expected return expression");
2015 if (parser->tok != ';') {
2016 exp = parse_expression(parser, false);
2020 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2021 parseerror(parser, "return with invalid expression");
2024 ret = ast_return_new(exp->expression.node.context, exp);
2030 if (!parser_next(parser))
2031 parseerror(parser, "parse error");
2032 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2033 if (opts_standard != COMPILER_GMQCC)
2034 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2036 parseerror(parser, "return without value");
2038 ret = ast_return_new(parser_ctx(parser), NULL);
2040 *out = (ast_expression*)ret;
2044 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2046 lex_ctx ctx = parser_ctx(parser);
2048 (void)block; /* not touching */
2050 if (!parser_next(parser) || parser->tok != ';') {
2051 parseerror(parser, "expected semicolon");
2055 if (!parser_next(parser))
2056 parseerror(parser, "parse error");
2058 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
2062 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2064 ast_expression *operand;
2066 ast_switch *switchnode;
2067 ast_switch_case swcase;
2069 lex_ctx ctx = parser_ctx(parser);
2071 (void)block; /* not touching */
2073 /* parse over the opening paren */
2074 if (!parser_next(parser) || parser->tok != '(') {
2075 parseerror(parser, "expected switch operand in parenthesis");
2079 /* parse into the expression */
2080 if (!parser_next(parser)) {
2081 parseerror(parser, "expected switch operand");
2084 /* parse the operand */
2085 operand = parse_expression_leave(parser, false);
2089 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2090 opval = (ast_value*)operand;
2091 if (!ast_istype(operand, ast_value) || !opval->isconst) {
2092 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2098 switchnode = ast_switch_new(ctx, operand);
2101 if (parser->tok != ')') {
2102 ast_delete(switchnode);
2103 parseerror(parser, "expected closing paren after 'switch' operand");
2107 /* parse over the opening paren */
2108 if (!parser_next(parser) || parser->tok != '{') {
2109 ast_delete(switchnode);
2110 parseerror(parser, "expected list of cases");
2114 if (!parser_next(parser)) {
2115 ast_delete(switchnode);
2116 parseerror(parser, "expected 'case' or 'default'");
2121 while (parser->tok != '}') {
2122 ast_block *caseblock;
2124 if (parser->tok != TOKEN_KEYWORD) {
2125 ast_delete(switchnode);
2126 parseerror(parser, "expected 'case' or 'default'");
2129 if (!strcmp(parser_tokval(parser), "case")) {
2130 if (!parser_next(parser)) {
2131 ast_delete(switchnode);
2132 parseerror(parser, "expected expression for case");
2135 swcase.value = parse_expression_leave(parser, false);
2136 if (!swcase.value) {
2137 ast_delete(switchnode);
2138 parseerror(parser, "expected expression for case");
2142 else if (!strcmp(parser_tokval(parser), "default")) {
2143 swcase.value = NULL;
2144 if (!parser_next(parser)) {
2145 ast_delete(switchnode);
2146 parseerror(parser, "expected colon");
2151 /* Now the colon and body */
2152 if (parser->tok != ':') {
2153 if (swcase.value) ast_unref(swcase.value);
2154 ast_delete(switchnode);
2155 parseerror(parser, "expected colon");
2159 if (!parser_next(parser)) {
2160 if (swcase.value) ast_unref(swcase.value);
2161 ast_delete(switchnode);
2162 parseerror(parser, "expected statements or case");
2165 caseblock = ast_block_new(parser_ctx(parser));
2167 if (swcase.value) ast_unref(swcase.value);
2168 ast_delete(switchnode);
2171 swcase.code = (ast_expression*)caseblock;
2172 vec_push(switchnode->cases, swcase);
2174 ast_expression *expr;
2175 if (parser->tok == '}')
2177 if (parser->tok == TOKEN_KEYWORD) {
2178 if (!strcmp(parser_tokval(parser), "case") ||
2179 !strcmp(parser_tokval(parser), "default"))
2184 if (!parse_statement(parser, caseblock, &expr, true)) {
2185 ast_delete(switchnode);
2190 vec_push(caseblock->exprs, expr);
2195 if (parser->tok != '}') {
2196 ast_delete(switchnode);
2197 parseerror(parser, "expected closing paren of case list");
2200 if (!parser_next(parser)) {
2201 ast_delete(switchnode);
2202 parseerror(parser, "parse error after switch");
2205 *out = (ast_expression*)switchnode;
2209 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2211 ast_value *typevar = NULL;
2212 if (parser->tok == TOKEN_IDENT)
2213 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2215 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2217 /* local variable */
2219 parseerror(parser, "cannot declare a variable from here");
2222 if (opts_standard == COMPILER_QCC) {
2223 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2226 if (!parse_variable(parser, block, false, false, typevar))
2231 else if (parser->tok == TOKEN_KEYWORD)
2233 if (!strcmp(parser_tokval(parser), "local"))
2236 parseerror(parser, "cannot declare a local variable here");
2239 if (!parser_next(parser)) {
2240 parseerror(parser, "expected variable declaration");
2243 if (!parse_variable(parser, block, true, false, NULL))
2248 else if (!strcmp(parser_tokval(parser), "return"))
2250 return parse_return(parser, block, out);
2252 else if (!strcmp(parser_tokval(parser), "if"))
2254 return parse_if(parser, block, out);
2256 else if (!strcmp(parser_tokval(parser), "while"))
2258 return parse_while(parser, block, out);
2260 else if (!strcmp(parser_tokval(parser), "do"))
2262 return parse_dowhile(parser, block, out);
2264 else if (!strcmp(parser_tokval(parser), "for"))
2266 if (opts_standard == COMPILER_QCC) {
2267 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2270 return parse_for(parser, block, out);
2272 else if (!strcmp(parser_tokval(parser), "break"))
2274 return parse_break_continue(parser, block, out, false);
2276 else if (!strcmp(parser_tokval(parser), "continue"))
2278 return parse_break_continue(parser, block, out, true);
2280 else if (!strcmp(parser_tokval(parser), "switch"))
2282 return parse_switch(parser, block, out);
2284 else if (!strcmp(parser_tokval(parser), "case") ||
2285 !strcmp(parser_tokval(parser), "default"))
2288 parseerror(parser, "unexpected 'case' label");
2293 else if (!strcmp(parser_tokval(parser), "typedef"))
2295 if (!parser_next(parser)) {
2296 parseerror(parser, "expected type definition after 'typedef'");
2299 return parse_typedef(parser);
2301 parseerror(parser, "Unexpected keyword");
2304 else if (parser->tok == '{')
2307 inner = parse_block(parser, false);
2310 *out = (ast_expression*)inner;
2315 ast_expression *exp = parse_expression(parser, false);
2319 if (!ast_istype(exp, ast_store) &&
2320 !ast_istype(exp, ast_call) &&
2321 !ast_istype(exp, ast_binstore))
2323 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2330 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn)
2334 parser_enterblock(parser);
2336 if (!parser_next(parser)) { /* skip the '{' */
2337 parseerror(parser, "expected function body");
2341 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2343 ast_expression *expr = NULL;
2344 if (parser->tok == '}')
2347 if (!parse_statement(parser, block, &expr, false)) {
2348 /* parseerror(parser, "parse error"); */
2354 vec_push(block->exprs, expr);
2357 if (parser->tok != '}') {
2360 if (warnreturn && parser->function->vtype->expression.next->expression.vtype != TYPE_VOID)
2362 if (!vec_size(block->exprs) ||
2363 !ast_istype(vec_last(block->exprs), ast_return))
2365 if (parsewarning(parser, WARN_MISSING_RETURN_VALUES, "control reaches end of non-void function")) {
2371 (void)parser_next(parser);
2375 if (!parser_leaveblock(parser))
2377 return retval && !!block;
2380 static ast_block* parse_block(parser_t *parser, bool warnreturn)
2383 block = ast_block_new(parser_ctx(parser));
2386 if (!parse_block_into(parser, block, warnreturn)) {
2387 ast_block_delete(block);
2393 static ast_expression* parse_statement_or_block(parser_t *parser)
2395 ast_expression *expr = NULL;
2396 if (parser->tok == '{')
2397 return (ast_expression*)parse_block(parser, false);
2398 if (!parse_statement(parser, NULL, &expr, false))
2403 static bool create_vector_members(ast_value *var, ast_member **me)
2406 size_t len = strlen(var->name);
2408 for (i = 0; i < 3; ++i) {
2409 char *name = mem_a(len+3);
2410 memcpy(name, var->name, len);
2412 name[len+1] = 'x'+i;
2414 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
2423 do { ast_member_delete(me[--i]); } while(i);
2427 static bool parse_function_body(parser_t *parser, ast_value *var)
2429 ast_block *block = NULL;
2434 ast_expression *framenum = NULL;
2435 ast_expression *nextthink = NULL;
2436 /* None of the following have to be deleted */
2437 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2438 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2439 bool has_frame_think;
2443 has_frame_think = false;
2444 old = parser->function;
2446 if (var->expression.variadic) {
2447 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2448 "variadic function with implementation will not be able to access additional parameters"))
2454 if (parser->tok == '[') {
2455 /* got a frame definition: [ framenum, nextthink ]
2456 * this translates to:
2457 * self.frame = framenum;
2458 * self.nextthink = time + 0.1;
2459 * self.think = nextthink;
2463 fld_think = parser_find_field(parser, "think");
2464 fld_nextthink = parser_find_field(parser, "nextthink");
2465 fld_frame = parser_find_field(parser, "frame");
2466 if (!fld_think || !fld_nextthink || !fld_frame) {
2467 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2468 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2471 gbl_time = parser_find_global(parser, "time");
2472 gbl_self = parser_find_global(parser, "self");
2473 if (!gbl_time || !gbl_self) {
2474 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2475 parseerror(parser, "please declare the following globals: `time`, `self`");
2479 if (!parser_next(parser))
2482 framenum = parse_expression_leave(parser, true);
2484 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2487 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->isconst) {
2488 ast_unref(framenum);
2489 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2493 if (parser->tok != ',') {
2494 ast_unref(framenum);
2495 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2496 parseerror(parser, "Got a %i\n", parser->tok);
2500 if (!parser_next(parser)) {
2501 ast_unref(framenum);
2505 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2507 /* qc allows the use of not-yet-declared functions here
2508 * - this automatically creates a prototype */
2509 ast_value *thinkfunc;
2510 ast_expression *functype = fld_think->expression.next;
2512 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2513 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2514 ast_unref(framenum);
2515 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2519 if (!parser_next(parser)) {
2520 ast_unref(framenum);
2521 ast_delete(thinkfunc);
2525 vec_push(parser->globals, (ast_expression*)thinkfunc);
2526 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
2527 nextthink = (ast_expression*)thinkfunc;
2530 nextthink = parse_expression_leave(parser, true);
2532 ast_unref(framenum);
2533 parseerror(parser, "expected a think-function in [frame,think] notation");
2538 if (!ast_istype(nextthink, ast_value)) {
2539 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2543 if (retval && parser->tok != ']') {
2544 parseerror(parser, "expected closing `]` for [frame,think] notation");
2548 if (retval && !parser_next(parser)) {
2552 if (retval && parser->tok != '{') {
2553 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2558 ast_unref(nextthink);
2559 ast_unref(framenum);
2563 has_frame_think = true;
2566 block = ast_block_new(parser_ctx(parser));
2568 parseerror(parser, "failed to allocate block");
2569 if (has_frame_think) {
2570 ast_unref(nextthink);
2571 ast_unref(framenum);
2576 if (has_frame_think) {
2578 ast_expression *self_frame;
2579 ast_expression *self_nextthink;
2580 ast_expression *self_think;
2581 ast_expression *time_plus_1;
2582 ast_store *store_frame;
2583 ast_store *store_nextthink;
2584 ast_store *store_think;
2586 ctx = parser_ctx(parser);
2587 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2588 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2589 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2591 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2592 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2594 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2595 if (self_frame) ast_delete(self_frame);
2596 if (self_nextthink) ast_delete(self_nextthink);
2597 if (self_think) ast_delete(self_think);
2598 if (time_plus_1) ast_delete(time_plus_1);
2604 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2605 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2606 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2609 ast_delete(self_frame);
2612 if (!store_nextthink) {
2613 ast_delete(self_nextthink);
2617 ast_delete(self_think);
2621 if (store_frame) ast_delete(store_frame);
2622 if (store_nextthink) ast_delete(store_nextthink);
2623 if (store_think) ast_delete(store_think);
2626 vec_push(block->exprs, (ast_expression*)store_frame);
2627 vec_push(block->exprs, (ast_expression*)store_nextthink);
2628 vec_push(block->exprs, (ast_expression*)store_think);
2632 parseerror(parser, "failed to generate code for [frame,think]");
2633 ast_unref(nextthink);
2634 ast_unref(framenum);
2640 parser_enterblock(parser);
2642 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
2644 ast_value *param = var->expression.params[parami];
2647 if (param->expression.vtype != TYPE_VECTOR &&
2648 (param->expression.vtype != TYPE_FIELD ||
2649 param->expression.next->expression.vtype != TYPE_VECTOR))
2654 if (!create_vector_members(param, me)) {
2655 ast_block_delete(block);
2659 for (e = 0; e < 3; ++e) {
2660 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
2661 ast_block_collect(block, (ast_expression*)me[e]);
2665 func = ast_function_new(ast_ctx(var), var->name, var);
2667 parseerror(parser, "failed to allocate function for `%s`", var->name);
2668 ast_block_delete(block);
2671 vec_push(parser->functions, func);
2673 parser->function = func;
2674 if (!parse_block_into(parser, block, true)) {
2675 ast_block_delete(block);
2679 vec_push(func->blocks, block);
2681 parser->function = old;
2682 if (!parser_leaveblock(parser))
2684 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
2685 parseerror(parser, "internal error: local scopes left");
2689 if (parser->tok == ';')
2690 return parser_next(parser);
2691 else if (opts_standard == COMPILER_QCC)
2692 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
2696 vec_pop(parser->functions);
2697 ast_function_delete(func);
2698 var->constval.vfunc = NULL;
2701 (void)!parser_leaveblock(parser);
2702 parser->function = old;
2706 static ast_expression *array_accessor_split(
2711 ast_expression *left,
2712 ast_expression *right
2718 lex_ctx ctx = ast_ctx(array);
2720 if (!left || !right) {
2721 if (left) ast_delete(left);
2722 if (right) ast_delete(right);
2726 cmp = ast_binary_new(ctx, INSTR_LT,
2727 (ast_expression*)index,
2728 (ast_expression*)parser_const_float(parser, middle));
2732 parseerror(parser, "internal error: failed to create comparison for array setter");
2736 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
2738 ast_delete(cmp); /* will delete left and right */
2739 parseerror(parser, "internal error: failed to create conditional jump for array setter");
2743 return (ast_expression*)ifthen;
2746 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
2748 lex_ctx ctx = ast_ctx(array);
2750 if (from+1 == afterend) {
2751 /* set this value */
2754 ast_array_index *subscript;
2756 int assignop = type_store_instr[value->expression.vtype];
2758 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2759 assignop = INSTR_STORE_V;
2761 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2765 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
2767 ast_delete(subscript);
2771 block = ast_block_new(ctx);
2777 vec_push(block->exprs, (ast_expression*)st);
2779 ret = ast_return_new(ctx, NULL);
2785 vec_push(block->exprs, (ast_expression*)ret);
2787 return (ast_expression*)block;
2789 ast_expression *left, *right;
2790 size_t diff = afterend - from;
2791 size_t middle = from + diff/2;
2792 left = array_setter_node(parser, array, index, value, from, middle);
2793 right = array_setter_node(parser, array, index, value, middle, afterend);
2794 return array_accessor_split(parser, array, index, middle, left, right);
2798 static ast_expression *array_field_setter_node(
2807 lex_ctx ctx = ast_ctx(array);
2809 if (from+1 == afterend) {
2810 /* set this value */
2813 ast_entfield *entfield;
2814 ast_array_index *subscript;
2816 int assignop = type_storep_instr[value->expression.vtype];
2818 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2819 assignop = INSTR_STOREP_V;
2821 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2825 entfield = ast_entfield_new_force(ctx,
2826 (ast_expression*)entity,
2827 (ast_expression*)subscript,
2828 (ast_expression*)subscript);
2830 ast_delete(subscript);
2834 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
2836 ast_delete(entfield);
2840 block = ast_block_new(ctx);
2846 vec_push(block->exprs, (ast_expression*)st);
2848 ret = ast_return_new(ctx, NULL);
2854 vec_push(block->exprs, (ast_expression*)ret);
2856 return (ast_expression*)block;
2858 ast_expression *left, *right;
2859 size_t diff = afterend - from;
2860 size_t middle = from + diff/2;
2861 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
2862 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
2863 return array_accessor_split(parser, array, index, middle, left, right);
2867 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
2869 lex_ctx ctx = ast_ctx(array);
2871 if (from+1 == afterend) {
2873 ast_array_index *subscript;
2875 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2879 ret = ast_return_new(ctx, (ast_expression*)subscript);
2881 ast_delete(subscript);
2885 return (ast_expression*)ret;
2887 ast_expression *left, *right;
2888 size_t diff = afterend - from;
2889 size_t middle = from + diff/2;
2890 left = array_getter_node(parser, array, index, from, middle);
2891 right = array_getter_node(parser, array, index, middle, afterend);
2892 return array_accessor_split(parser, array, index, middle, left, right);
2896 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
2898 ast_function *func = NULL;
2899 ast_value *fval = NULL;
2900 ast_block *body = NULL;
2902 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
2904 parseerror(parser, "failed to create accessor function value");
2908 func = ast_function_new(ast_ctx(array), funcname, fval);
2911 parseerror(parser, "failed to create accessor function node");
2915 body = ast_block_new(ast_ctx(array));
2917 parseerror(parser, "failed to create block for array accessor");
2923 vec_push(func->blocks, body);
2926 vec_push(parser->accessors, fval);
2931 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
2933 ast_expression *root = NULL;
2934 ast_value *index = NULL;
2935 ast_value *value = NULL;
2939 if (!ast_istype(array->expression.next, ast_value)) {
2940 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2944 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2946 func = fval->constval.vfunc;
2947 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2949 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2950 value = ast_value_copy((ast_value*)array->expression.next);
2952 if (!index || !value) {
2953 parseerror(parser, "failed to create locals for array accessor");
2956 (void)!ast_value_set_name(value, "value"); /* not important */
2957 vec_push(fval->expression.params, index);
2958 vec_push(fval->expression.params, value);
2960 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
2962 parseerror(parser, "failed to build accessor search tree");
2966 vec_push(func->blocks[0]->exprs, root);
2967 array->setter = fval;
2970 if (index) ast_delete(index);
2971 if (value) ast_delete(value);
2972 if (root) ast_delete(root);
2978 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
2980 ast_expression *root = NULL;
2981 ast_value *entity = NULL;
2982 ast_value *index = NULL;
2983 ast_value *value = NULL;
2987 if (!ast_istype(array->expression.next, ast_value)) {
2988 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2992 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2994 func = fval->constval.vfunc;
2995 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2997 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
2998 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2999 value = ast_value_copy((ast_value*)array->expression.next);
3000 if (!entity || !index || !value) {
3001 parseerror(parser, "failed to create locals for array accessor");
3004 (void)!ast_value_set_name(value, "value"); /* not important */
3005 vec_push(fval->expression.params, entity);
3006 vec_push(fval->expression.params, index);
3007 vec_push(fval->expression.params, value);
3009 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3011 parseerror(parser, "failed to build accessor search tree");
3015 vec_push(func->blocks[0]->exprs, root);
3016 array->setter = fval;
3019 if (entity) ast_delete(entity);
3020 if (index) ast_delete(index);
3021 if (value) ast_delete(value);
3022 if (root) ast_delete(root);
3028 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3030 ast_expression *root = NULL;
3031 ast_value *index = NULL;
3035 /* NOTE: checking array->expression.next rather than elemtype since
3036 * for fields elemtype is a temporary fieldtype.
3038 if (!ast_istype(array->expression.next, ast_value)) {
3039 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3043 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3045 func = fval->constval.vfunc;
3046 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3048 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3051 parseerror(parser, "failed to create locals for array accessor");
3054 vec_push(fval->expression.params, index);
3056 root = array_getter_node(parser, array, index, 0, array->expression.count);
3058 parseerror(parser, "failed to build accessor search tree");
3062 vec_push(func->blocks[0]->exprs, root);
3063 array->getter = fval;
3066 if (index) ast_delete(index);
3067 if (root) ast_delete(root);
3073 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3074 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3082 bool variadic = false;
3084 ctx = parser_ctx(parser);
3086 /* for the sake of less code we parse-in in this function */
3087 if (!parser_next(parser)) {
3088 parseerror(parser, "expected parameter list");
3094 /* parse variables until we hit a closing paren */
3095 while (parser->tok != ')') {
3097 /* there must be commas between them */
3098 if (parser->tok != ',') {
3099 parseerror(parser, "expected comma or end of parameter list");
3102 if (!parser_next(parser)) {
3103 parseerror(parser, "expected parameter");
3109 if (parser->tok == TOKEN_DOTS) {
3110 /* '...' indicates a varargs function */
3112 if (!parser_next(parser)) {
3113 parseerror(parser, "expected parameter");
3116 if (parser->tok != ')') {
3117 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3123 /* for anything else just parse a typename */
3124 param = parse_typename(parser, NULL, NULL);
3127 vec_push(params, param);
3128 if (param->expression.vtype >= TYPE_VARIANT) {
3129 char typename[1024];
3130 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
3131 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
3138 if (vec_size(params) > 8 && opts_standard == COMPILER_QCC)
3139 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3142 if (!parser_next(parser)) {
3143 parseerror(parser, "parse error after typename");
3147 /* now turn 'var' into a function type */
3148 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3149 fval->expression.next = (ast_expression*)var;
3150 fval->expression.variadic = variadic;
3153 var->expression.params = params;
3160 for (i = 0; i < vec_size(params); ++i)
3161 ast_delete(params[i]);
3166 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3168 ast_expression *cexp;
3169 ast_value *cval, *tmp;
3172 ctx = parser_ctx(parser);
3174 if (!parser_next(parser)) {
3176 parseerror(parser, "expected array-size");
3180 cexp = parse_expression_leave(parser, true);
3182 if (!cexp || !ast_istype(cexp, ast_value)) {
3186 parseerror(parser, "expected array-size as constant positive integer");
3189 cval = (ast_value*)cexp;
3191 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3192 tmp->expression.next = (ast_expression*)var;
3195 if (cval->expression.vtype == TYPE_INTEGER)
3196 tmp->expression.count = cval->constval.vint;
3197 else if (cval->expression.vtype == TYPE_FLOAT)
3198 tmp->expression.count = cval->constval.vfloat;
3202 parseerror(parser, "array-size must be a positive integer constant");
3207 if (parser->tok != ']') {
3209 parseerror(parser, "expected ']' after array-size");
3212 if (!parser_next(parser)) {
3214 parseerror(parser, "error after parsing array size");
3220 /* Parse a complete typename.
3221 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3222 * but when parsing variables separated by comma
3223 * 'storebase' should point to where the base-type should be kept.
3224 * The base type makes up every bit of type information which comes *before* the
3227 * The following will be parsed in its entirety:
3229 * The 'basetype' in this case is 'void()'
3230 * and if there's a comma after it, say:
3232 * then the type-information 'void()' can be stored in 'storebase'
3234 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3236 ast_value *var, *tmp;
3239 const char *name = NULL;
3240 bool isfield = false;
3241 bool wasarray = false;
3242 size_t morefields = 0;
3244 ctx = parser_ctx(parser);
3246 /* types may start with a dot */
3247 if (parser->tok == '.') {
3249 /* if we parsed a dot we need a typename now */
3250 if (!parser_next(parser)) {
3251 parseerror(parser, "expected typename for field definition");
3255 /* Further dots are handled seperately because they won't be part of the
3258 while (parser->tok == '.') {
3260 if (!parser_next(parser)) {
3261 parseerror(parser, "expected typename for field definition");
3266 if (parser->tok == TOKEN_IDENT)
3267 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
3268 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
3269 parseerror(parser, "expected typename");
3274 /* generate the basic type value */
3275 if (cached_typedef) {
3276 var = ast_value_copy(cached_typedef);
3277 ast_value_set_name(var, "<type(from_def)>");
3279 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3281 for (; morefields; --morefields) {
3282 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
3283 tmp->expression.next = (ast_expression*)var;
3287 /* do not yet turn into a field - remember:
3288 * .void() foo; is a field too
3289 * .void()() foo; is a function
3293 if (!parser_next(parser)) {
3295 parseerror(parser, "parse error after typename");
3299 /* an opening paren now starts the parameter-list of a function
3300 * this is where original-QC has parameter lists.
3301 * We allow a single parameter list here.
3302 * Much like fteqcc we don't allow `float()() x`
3304 if (parser->tok == '(') {
3305 var = parse_parameter_list(parser, var);
3310 /* store the base if requested */
3312 *storebase = ast_value_copy(var);
3314 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3315 tmp->expression.next = (ast_expression*)*storebase;
3320 /* there may be a name now */
3321 if (parser->tok == TOKEN_IDENT) {
3322 name = util_strdup(parser_tokval(parser));
3324 if (!parser_next(parser)) {
3326 parseerror(parser, "error after variable or field declaration");
3331 /* now this may be an array */
3332 if (parser->tok == '[') {
3334 var = parse_arraysize(parser, var);
3339 /* This is the point where we can turn it into a field */
3341 /* turn it into a field if desired */
3342 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3343 tmp->expression.next = (ast_expression*)var;
3347 /* now there may be function parens again */
3348 if (parser->tok == '(' && opts_standard == COMPILER_QCC)
3349 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3350 if (parser->tok == '(' && wasarray)
3351 parseerror(parser, "arrays as part of a return type is not supported");
3352 while (parser->tok == '(') {
3353 var = parse_parameter_list(parser, var);
3362 /* finally name it */
3364 if (!ast_value_set_name(var, name)) {
3366 parseerror(parser, "internal error: failed to set name");
3369 /* free the name, ast_value_set_name duplicates */
3376 static bool parse_typedef(parser_t *parser)
3378 ast_value *typevar, *oldtype;
3379 ast_expression *old;
3381 typevar = parse_typename(parser, NULL, NULL);
3386 if ( (old = parser_find_var(parser, typevar->name)) ) {
3387 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
3388 " -> `%s` has been declared here: %s:%i",
3389 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
3390 ast_delete(typevar);
3394 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
3395 parseerror(parser, "type `%s` has already been declared here: %s:%i",
3396 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
3397 ast_delete(typevar);
3401 vec_push(parser->_typedefs, typevar);
3402 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
3404 if (parser->tok != ';') {
3405 parseerror(parser, "expected semicolon after typedef");
3408 if (!parser_next(parser)) {
3409 parseerror(parser, "parse error after typedef");
3416 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, bool is_const, ast_value *cached_typedef)
3420 ast_expression *old;
3424 ast_value *basetype = NULL;
3426 bool isparam = false;
3427 bool isvector = false;
3428 bool cleanvar = true;
3429 bool wasarray = false;
3433 /* get the first complete variable */
3434 var = parse_typename(parser, &basetype, cached_typedef);
3437 ast_delete(basetype);
3445 /* Part 0: finish the type */
3446 if (parser->tok == '(') {
3447 if (opts_standard == COMPILER_QCC)
3448 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3449 var = parse_parameter_list(parser, var);
3455 /* we only allow 1-dimensional arrays */
3456 if (parser->tok == '[') {
3458 var = parse_arraysize(parser, var);
3464 if (parser->tok == '(' && wasarray) {
3465 parseerror(parser, "arrays as part of a return type is not supported");
3466 /* we'll still parse the type completely for now */
3468 /* for functions returning functions */
3469 while (parser->tok == '(') {
3470 if (opts_standard == COMPILER_QCC)
3471 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3472 var = parse_parameter_list(parser, var);
3480 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3481 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3482 * is then filled with the previous definition and the parameter-names replaced.
3485 /* Deal with end_sys_ vars */
3487 if (!strcmp(var->name, "end_sys_globals")) {
3488 parser->crc_globals = vec_size(parser->globals);
3491 else if (!strcmp(var->name, "end_sys_fields")) {
3492 parser->crc_fields = vec_size(parser->fields);
3495 if (was_end && var->expression.vtype == TYPE_FIELD) {
3496 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3497 "global '%s' hint should not be a field",
3498 parser_tokval(parser)))
3505 if (!nofields && var->expression.vtype == TYPE_FIELD)
3507 /* deal with field declarations */
3508 old = parser_find_field(parser, var->name);
3510 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3511 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3520 parseerror(parser, "field `%s` already declared here: %s:%i",
3521 var->name, ast_ctx(old).file, ast_ctx(old).line);
3526 if (opts_standard == COMPILER_QCC &&
3527 (old = parser_find_global(parser, var->name)))
3529 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3530 parseerror(parser, "field `%s` already declared here: %s:%i",
3531 var->name, ast_ctx(old).file, ast_ctx(old).line);
3538 /* deal with other globals */
3539 old = parser_find_global(parser, var->name);
3540 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3542 /* This is a function which had a prototype */
3543 if (!ast_istype(old, ast_value)) {
3544 parseerror(parser, "internal error: prototype is not an ast_value");
3548 proto = (ast_value*)old;
3549 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3550 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3552 ast_ctx(proto).file, ast_ctx(proto).line);
3556 /* we need the new parameter-names */
3557 for (i = 0; i < vec_size(proto->expression.params); ++i)
3558 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
3566 if (opts_standard == COMPILER_GMQCC) {
3567 parseerror(parser, "global `%s` already declared here: %s:%i",
3568 var->name, ast_ctx(old).file, ast_ctx(old).line);
3572 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
3573 "global `%s` already declared here: %s:%i",
3574 var->name, ast_ctx(old).file, ast_ctx(old).line))
3581 if (opts_standard == COMPILER_QCC &&
3582 (old = parser_find_field(parser, var->name)))
3584 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3585 parseerror(parser, "global `%s` already declared here: %s:%i",
3586 var->name, ast_ctx(old).file, ast_ctx(old).line);
3593 else /* it's not a global */
3595 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
3596 if (old && !isparam) {
3597 parseerror(parser, "local `%s` already declared here: %s:%i",
3598 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3602 old = parser_find_local(parser, var->name, 0, &isparam);
3603 if (old && isparam) {
3604 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
3605 "local `%s` is shadowing a parameter", var->name))
3607 parseerror(parser, "local `%s` already declared here: %s:%i",
3608 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3612 if (opts_standard != COMPILER_GMQCC) {
3621 var->isconst = true;
3624 * Create the global/local, and deal with vector types.
3627 if (var->expression.vtype == TYPE_VECTOR)
3629 else if (var->expression.vtype == TYPE_FIELD &&
3630 var->expression.next->expression.vtype == TYPE_VECTOR)
3634 if (!create_vector_members(var, me)) {
3641 /* deal with global variables, fields, functions */
3642 if (!nofields && var->expression.vtype == TYPE_FIELD) {
3643 vec_push(parser->fields, (ast_expression*)var);
3644 util_htset(parser->htfields, var->name, var);
3646 for (i = 0; i < 3; ++i) {
3647 vec_push(parser->fields, (ast_expression*)me[i]);
3648 util_htset(parser->htfields, me[i]->name, me[i]);
3653 vec_push(parser->globals, (ast_expression*)var);
3654 util_htset(parser->htglobals, var->name, var);
3656 for (i = 0; i < 3; ++i) {
3657 vec_push(parser->globals, (ast_expression*)me[i]);
3658 util_htset(parser->htglobals, me[i]->name, me[i]);
3663 vec_push(localblock->locals, var);
3664 parser_addlocal(parser, var->name, (ast_expression*)var);
3666 for (i = 0; i < 3; ++i) {
3667 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
3668 ast_block_collect(localblock, (ast_expression*)me[i]);
3674 me[0] = me[1] = me[2] = NULL;
3679 if (var->expression.vtype == TYPE_ARRAY) {
3681 snprintf(name, sizeof(name), "%s##SET", var->name);
3682 if (!parser_create_array_setter(parser, var, name))
3684 snprintf(name, sizeof(name), "%s##GET", var->name);
3685 if (!parser_create_array_getter(parser, var, var->expression.next, name))
3688 else if (!localblock && !nofields &&
3689 var->expression.vtype == TYPE_FIELD &&
3690 var->expression.next->expression.vtype == TYPE_ARRAY)
3693 ast_expression *telem;
3695 ast_value *array = (ast_value*)var->expression.next;
3697 if (!ast_istype(var->expression.next, ast_value)) {
3698 parseerror(parser, "internal error: field element type must be an ast_value");
3702 snprintf(name, sizeof(name), "%s##SETF", var->name);
3703 if (!parser_create_array_field_setter(parser, array, name))
3706 telem = ast_type_copy(ast_ctx(var), array->expression.next);
3707 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
3708 tfield->expression.next = telem;
3709 snprintf(name, sizeof(name), "%s##GETFP", var->name);
3710 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
3718 if (parser->tok == ';') {
3719 ast_delete(basetype);
3720 if (!parser_next(parser)) {
3721 parseerror(parser, "error after variable declaration");
3727 if (parser->tok == ',')
3730 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
3731 parseerror(parser, "missing comma or semicolon while parsing variables");
3735 if (localblock && opts_standard == COMPILER_QCC) {
3736 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
3737 "initializing expression turns variable `%s` into a constant in this standard",
3744 if (parser->tok != '{') {
3745 if (parser->tok != '=') {
3746 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
3750 if (!parser_next(parser)) {
3751 parseerror(parser, "error parsing initializer");
3755 else if (opts_standard == COMPILER_QCC) {
3756 parseerror(parser, "expected '=' before function body in this standard");
3759 if (parser->tok == '#') {
3760 ast_function *func = NULL;
3763 parseerror(parser, "cannot declare builtins within functions");
3766 if (var->expression.vtype != TYPE_FUNCTION) {
3767 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
3770 if (!parser_next(parser)) {
3771 parseerror(parser, "expected builtin number");
3774 if (parser->tok != TOKEN_INTCONST) {
3775 parseerror(parser, "builtin number must be an integer constant");
3778 if (parser_token(parser)->constval.i <= 0) {
3779 parseerror(parser, "builtin number must be an integer greater than zero");
3784 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
3785 "builtin `%s` has already been defined\n"
3786 " -> previous declaration here: %s:%i",
3787 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
3791 func = ast_function_new(ast_ctx(var), var->name, var);
3793 parseerror(parser, "failed to allocate function for `%s`", var->name);
3796 vec_push(parser->functions, func);
3798 func->builtin = -parser_token(parser)->constval.i;
3801 if (!parser_next(parser)) {
3802 parseerror(parser, "expected comma or semicolon");
3804 ast_function_delete(func);
3805 var->constval.vfunc = NULL;
3809 else if (parser->tok == '{' || parser->tok == '[')
3812 parseerror(parser, "cannot declare functions within functions");
3816 if (!parse_function_body(parser, var))
3818 ast_delete(basetype);
3821 ast_expression *cexp;
3824 cexp = parse_expression_leave(parser, true);
3829 cval = (ast_value*)cexp;
3830 if (!ast_istype(cval, ast_value) || !cval->isconst)
3831 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
3834 var->isconst = true;
3835 if (cval->expression.vtype == TYPE_STRING)
3836 var->constval.vstring = parser_strdup(cval->constval.vstring);
3838 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
3842 shunt sy = { NULL, NULL };
3843 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
3844 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
3845 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
3846 if (!parser_sy_pop(parser, &sy))
3849 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
3850 parseerror(parser, "internal error: leaked operands");
3851 vec_push(localblock->exprs, (ast_expression*)sy.out[0].out);
3859 if (parser->tok == ',') {
3860 if (!parser_next(parser)) {
3861 parseerror(parser, "expected another variable");
3865 if (parser->tok != TOKEN_IDENT) {
3866 parseerror(parser, "expected another variable");
3869 var = ast_value_copy(basetype);
3871 ast_value_set_name(var, parser_tokval(parser));
3872 if (!parser_next(parser)) {
3873 parseerror(parser, "error parsing variable declaration");
3879 if (parser->tok != ';') {
3880 parseerror(parser, "missing semicolon after variables");
3884 if (!parser_next(parser)) {
3885 parseerror(parser, "parse error after variable declaration");
3889 ast_delete(basetype);
3893 if (cleanvar && var)
3895 ast_delete(basetype);
3899 ast_delete(basetype);
3900 if (cleanvar && var)
3902 if (me[0]) ast_member_delete(me[0]);
3903 if (me[1]) ast_member_delete(me[1]);
3904 if (me[2]) ast_member_delete(me[2]);
3908 static bool parser_global_statement(parser_t *parser)
3910 ast_value *istype = NULL;
3911 if (parser->tok == TOKEN_IDENT)
3912 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
3914 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3916 return parse_variable(parser, NULL, false, false, istype);
3918 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "var"))
3920 if (!strcmp(parser_tokval(parser), "var")) {
3921 if (!parser_next(parser)) {
3922 parseerror(parser, "expected variable declaration after 'var'");
3925 return parse_variable(parser, NULL, true, false, NULL);
3928 else if (parser->tok == TOKEN_KEYWORD)
3930 if (!strcmp(parser_tokval(parser), "const")) {
3931 if (!parser_next(parser)) {
3932 parseerror(parser, "expected variable declaration after 'const'");
3935 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "var")) {
3936 (void)!parsewarning(parser, WARN_CONST_VAR, "ignoring `var` after const qualifier");
3937 if (!parser_next(parser)) {
3938 parseerror(parser, "expected variable declaration after 'const var'");
3942 return parse_variable(parser, NULL, true, true, NULL);
3944 else if (!strcmp(parser_tokval(parser), "typedef")) {
3945 if (!parser_next(parser)) {
3946 parseerror(parser, "expected type definition after 'typedef'");
3949 return parse_typedef(parser);
3951 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
3954 else if (parser->tok == '$')
3956 if (!parser_next(parser)) {
3957 parseerror(parser, "parse error");
3963 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
3969 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
3971 return util_crc16(old, str, strlen(str));
3974 static void progdefs_crc_file(const char *str)
3976 /* write to progdefs.h here */
3980 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
3982 old = progdefs_crc_sum(old, str);
3983 progdefs_crc_file(str);
3987 static void generate_checksum(parser_t *parser)
3989 uint16_t crc = 0xFFFF;
3993 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
3994 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
3996 progdefs_crc_file("\tint\tpad;\n");
3997 progdefs_crc_file("\tint\tofs_return[3];\n");
3998 progdefs_crc_file("\tint\tofs_parm0[3];\n");
3999 progdefs_crc_file("\tint\tofs_parm1[3];\n");
4000 progdefs_crc_file("\tint\tofs_parm2[3];\n");
4001 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4002 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4003 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4004 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4005 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4007 for (i = 0; i < parser->crc_globals; ++i) {
4008 if (!ast_istype(parser->globals[i], ast_value))
4010 value = (ast_value*)(parser->globals[i]);
4011 switch (value->expression.vtype) {
4012 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4013 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4014 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4015 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4017 crc = progdefs_crc_both(crc, "\tint\t");
4020 crc = progdefs_crc_both(crc, value->name);
4021 crc = progdefs_crc_both(crc, ";\n");
4023 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4024 for (i = 0; i < parser->crc_fields; ++i) {
4025 if (!ast_istype(parser->fields[i], ast_value))
4027 value = (ast_value*)(parser->fields[i]);
4028 switch (value->expression.next->expression.vtype) {
4029 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4030 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4031 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4032 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4034 crc = progdefs_crc_both(crc, "\tint\t");
4037 crc = progdefs_crc_both(crc, value->name);
4038 crc = progdefs_crc_both(crc, ";\n");
4040 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4045 static parser_t *parser;
4051 parser = (parser_t*)mem_a(sizeof(parser_t));
4055 memset(parser, 0, sizeof(*parser));
4057 for (i = 0; i < operator_count; ++i) {
4058 if (operators[i].id == opid1('=')) {
4059 parser->assign_op = operators+i;
4063 if (!parser->assign_op) {
4064 printf("internal error: initializing parser: failed to find assign operator\n");
4069 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4070 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4071 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4072 vec_push(parser->_blocktypedefs, 0);
4076 bool parser_compile()
4078 /* initial lexer/parser state */
4079 parser->lex->flags.noops = true;
4081 if (parser_next(parser))
4083 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4085 if (!parser_global_statement(parser)) {
4086 if (parser->tok == TOKEN_EOF)
4087 parseerror(parser, "unexpected eof");
4088 else if (!parser->errors)
4089 parseerror(parser, "there have been errors, bailing out");
4090 lex_close(parser->lex);
4096 parseerror(parser, "parse error");
4097 lex_close(parser->lex);
4102 lex_close(parser->lex);
4105 return !parser->errors;
4108 bool parser_compile_file(const char *filename)
4110 parser->lex = lex_open(filename);
4112 con_err("failed to open file \"%s\"\n", filename);
4115 return parser_compile();
4118 bool parser_compile_string_len(const char *name, const char *str, size_t len)
4120 parser->lex = lex_open_string(str, len, name);
4122 con_err("failed to create lexer for string \"%s\"\n", name);
4125 return parser_compile();
4128 bool parser_compile_string(const char *name, const char *str)
4130 parser->lex = lex_open_string(str, strlen(str), name);
4132 con_err("failed to create lexer for string \"%s\"\n", name);
4135 return parser_compile();
4138 void parser_cleanup()
4141 for (i = 0; i < vec_size(parser->accessors); ++i) {
4142 ast_delete(parser->accessors[i]->constval.vfunc);
4143 parser->accessors[i]->constval.vfunc = NULL;
4144 ast_delete(parser->accessors[i]);
4146 for (i = 0; i < vec_size(parser->functions); ++i) {
4147 ast_delete(parser->functions[i]);
4149 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4150 ast_delete(parser->imm_vector[i]);
4152 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4153 ast_delete(parser->imm_string[i]);
4155 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4156 ast_delete(parser->imm_float[i]);
4158 for (i = 0; i < vec_size(parser->fields); ++i) {
4159 ast_delete(parser->fields[i]);
4161 for (i = 0; i < vec_size(parser->globals); ++i) {
4162 ast_delete(parser->globals[i]);
4164 vec_free(parser->accessors);
4165 vec_free(parser->functions);
4166 vec_free(parser->imm_vector);
4167 vec_free(parser->imm_string);
4168 vec_free(parser->imm_float);
4169 vec_free(parser->globals);
4170 vec_free(parser->fields);
4172 for (i = 0; i < vec_size(parser->variables); ++i)
4173 util_htdel(parser->variables[i]);
4174 vec_free(parser->variables);
4175 vec_free(parser->_blocklocals);
4176 vec_free(parser->_locals);
4178 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4179 ast_delete(parser->_typedefs[i]);
4180 vec_free(parser->_typedefs);
4181 for (i = 0; i < vec_size(parser->typedefs); ++i)
4182 util_htdel(parser->typedefs[i]);
4183 vec_free(parser->typedefs);
4184 vec_free(parser->_blocktypedefs);
4189 bool parser_finish(const char *output)
4195 if (!parser->errors)
4197 ir = ir_builder_new("gmqcc_out");
4199 con_out("failed to allocate builder\n");
4203 for (i = 0; i < vec_size(parser->fields); ++i) {
4206 if (!ast_istype(parser->fields[i], ast_value))
4208 field = (ast_value*)parser->fields[i];
4209 isconst = field->isconst;
4210 field->isconst = false;
4211 if (!ast_global_codegen((ast_value*)field, ir, true)) {
4212 con_out("failed to generate field %s\n", field->name);
4213 ir_builder_delete(ir);
4218 ast_expression *subtype;
4219 field->isconst = true;
4220 subtype = field->expression.next;
4221 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
4222 if (subtype->expression.vtype == TYPE_FIELD)
4223 ifld->fieldtype = subtype->expression.next->expression.vtype;
4224 else if (subtype->expression.vtype == TYPE_FUNCTION)
4225 ifld->outtype = subtype->expression.next->expression.vtype;
4226 (void)!ir_value_set_field(field->ir_v, ifld);
4229 for (i = 0; i < vec_size(parser->globals); ++i) {
4231 if (!ast_istype(parser->globals[i], ast_value))
4233 asvalue = (ast_value*)(parser->globals[i]);
4234 if (!asvalue->uses && !asvalue->isconst && asvalue->expression.vtype != TYPE_FUNCTION) {
4235 if (strcmp(asvalue->name, "end_sys_globals") &&
4236 strcmp(asvalue->name, "end_sys_fields"))
4238 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
4239 "unused global: `%s`", asvalue->name);
4242 if (!ast_global_codegen(asvalue, ir, false)) {
4243 con_out("failed to generate global %s\n", asvalue->name);
4244 ir_builder_delete(ir);
4248 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4249 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
4250 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
4251 ir_builder_delete(ir);
4255 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4256 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
4257 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
4258 ir_builder_delete(ir);
4262 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4263 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
4264 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
4265 ir_builder_delete(ir);
4269 for (i = 0; i < vec_size(parser->globals); ++i) {
4271 if (!ast_istype(parser->globals[i], ast_value))
4273 asvalue = (ast_value*)(parser->globals[i]);
4274 if (asvalue->setter) {
4275 if (!ast_global_codegen(asvalue->setter, ir, false) ||
4276 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
4277 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
4279 printf("failed to generate setter for %s\n", asvalue->name);
4280 ir_builder_delete(ir);
4284 if (asvalue->getter) {
4285 if (!ast_global_codegen(asvalue->getter, ir, false) ||
4286 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
4287 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
4289 printf("failed to generate getter for %s\n", asvalue->name);
4290 ir_builder_delete(ir);
4295 for (i = 0; i < vec_size(parser->fields); ++i) {
4297 asvalue = (ast_value*)(parser->fields[i]->expression.next);
4299 if (!ast_istype((ast_expression*)asvalue, ast_value))
4301 if (asvalue->expression.vtype != TYPE_ARRAY)
4303 if (asvalue->setter) {
4304 if (!ast_global_codegen(asvalue->setter, ir, false) ||
4305 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
4306 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
4308 printf("failed to generate setter for %s\n", asvalue->name);
4309 ir_builder_delete(ir);
4313 if (asvalue->getter) {
4314 if (!ast_global_codegen(asvalue->getter, ir, false) ||
4315 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
4316 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
4318 printf("failed to generate getter for %s\n", asvalue->name);
4319 ir_builder_delete(ir);
4324 for (i = 0; i < vec_size(parser->functions); ++i) {
4325 if (!ast_function_codegen(parser->functions[i], ir)) {
4326 con_out("failed to generate function %s\n", parser->functions[i]->name);
4327 ir_builder_delete(ir);
4332 ir_builder_dump(ir, con_out);
4333 for (i = 0; i < vec_size(parser->functions); ++i) {
4334 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4335 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4336 ir_builder_delete(ir);
4343 ir_builder_dump(ir, con_out);
4345 generate_checksum(parser);
4347 if (!ir_builder_generate(ir, output)) {
4348 con_out("*** failed to generate output file\n");
4349 ir_builder_delete(ir);
4354 ir_builder_delete(ir);
4358 con_out("*** there were compile errors\n");