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;
811 if (NotSameType(TYPE_FLOAT)) {
812 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
813 type_name[exprs[0]->expression.vtype],
814 type_name[exprs[1]->expression.vtype]);
815 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
816 parseerror(parser, "TODO: optional early out");
819 if (opts_standard == COMPILER_GMQCC)
820 con_out("TODO: early out logic\n");
821 if (CanConstFold(exprs[0], exprs[1]))
822 out = (ast_expression*)parser_const_float(parser,
823 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
825 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
829 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
830 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
831 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
832 parseerror(parser, "iperands of ternary expression must have the same type, got %s and %s", ty1, ty2);
835 if (CanConstFold1(exprs[0]))
836 out = (ConstF(0) ? exprs[1] : exprs[2]);
838 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
842 generated_op += 1; /* INSTR_GT */
844 generated_op += 1; /* INSTR_LT */
845 case opid2('>', '='):
846 generated_op += 1; /* INSTR_GE */
847 case opid2('<', '='):
848 generated_op += INSTR_LE;
849 if (NotSameType(TYPE_FLOAT)) {
850 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
851 type_name[exprs[0]->expression.vtype],
852 type_name[exprs[1]->expression.vtype]);
855 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
857 case opid2('!', '='):
858 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
859 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
860 type_name[exprs[0]->expression.vtype],
861 type_name[exprs[1]->expression.vtype]);
864 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
866 case opid2('=', '='):
867 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
868 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
869 type_name[exprs[0]->expression.vtype],
870 type_name[exprs[1]->expression.vtype]);
873 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
877 if (ast_istype(exprs[0], ast_entfield)) {
878 ast_expression *field = ((ast_entfield*)exprs[0])->field;
879 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
880 exprs[0]->expression.vtype == TYPE_FIELD &&
881 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
883 assignop = type_storep_instr[TYPE_VECTOR];
886 assignop = type_storep_instr[exprs[0]->expression.vtype];
887 if (!ast_compare_type(field->expression.next, exprs[1])) {
888 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
889 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
890 if (opts_standard == COMPILER_QCC &&
891 field->expression.next->expression.vtype == TYPE_FUNCTION &&
892 exprs[1]->expression.vtype == TYPE_FUNCTION)
894 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
895 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
901 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
906 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
907 exprs[0]->expression.vtype == TYPE_FIELD &&
908 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
910 assignop = type_store_instr[TYPE_VECTOR];
913 assignop = type_store_instr[exprs[0]->expression.vtype];
916 if (assignop == AINSTR_END) {
917 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
918 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
919 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
921 else if (!ast_compare_type(exprs[0], exprs[1])) {
922 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
923 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
924 if (opts_standard == COMPILER_QCC &&
925 exprs[0]->expression.vtype == TYPE_FUNCTION &&
926 exprs[1]->expression.vtype == TYPE_FUNCTION)
928 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
929 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
935 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
938 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
940 case opid3('+','+','P'):
941 case opid3('-','-','P'):
943 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
944 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
945 parseerror(parser, "invalid type for prefix increment: %s", ty1);
948 if (op->id == opid3('+','+','P'))
952 if (ast_istype(exprs[0], ast_entfield)) {
953 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
955 (ast_expression*)parser_const_float_1(parser));
957 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
959 (ast_expression*)parser_const_float_1(parser));
962 case opid3('S','+','+'):
963 case opid3('S','-','-'):
965 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
966 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
967 parseerror(parser, "invalid type for suffix increment: %s", ty1);
970 if (op->id == opid3('S','+','+')) {
977 if (ast_istype(exprs[0], ast_entfield)) {
978 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
980 (ast_expression*)parser_const_float_1(parser));
982 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
984 (ast_expression*)parser_const_float_1(parser));
988 out = (ast_expression*)ast_binary_new(ctx, subop,
990 (ast_expression*)parser_const_float_1(parser));
994 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
995 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
997 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
998 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
999 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1003 if (ast_istype(exprs[0], ast_entfield))
1004 assignop = type_storep_instr[exprs[0]->expression.vtype];
1006 assignop = type_store_instr[exprs[0]->expression.vtype];
1007 switch (exprs[0]->expression.vtype) {
1009 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1010 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1011 exprs[0], exprs[1]);
1014 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1015 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1016 exprs[0], exprs[1]);
1019 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1020 type_name[exprs[0]->expression.vtype],
1021 type_name[exprs[1]->expression.vtype]);
1025 case opid2('*','='):
1026 case opid2('/','='):
1027 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1028 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1029 exprs[0]->expression.vtype == TYPE_VECTOR))
1031 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1032 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1033 parseerror(parser, "invalid types used in expression: %s and %s",
1037 if (ast_istype(exprs[0], ast_entfield))
1038 assignop = type_storep_instr[exprs[0]->expression.vtype];
1040 assignop = type_store_instr[exprs[0]->expression.vtype];
1041 switch (exprs[0]->expression.vtype) {
1043 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1044 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1045 exprs[0], exprs[1]);
1048 if (op->id == opid2('*','=')) {
1049 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1050 exprs[0], exprs[1]);
1052 /* there's no DIV_VF */
1053 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1054 (ast_expression*)parser_const_float_1(parser),
1058 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1063 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1064 type_name[exprs[0]->expression.vtype],
1065 type_name[exprs[1]->expression.vtype]);
1069 case opid2('&','='):
1070 case opid2('|','='):
1071 if (NotSameType(TYPE_FLOAT)) {
1072 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1073 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1074 parseerror(parser, "invalid types used in expression: %s and %s",
1078 if (ast_istype(exprs[0], ast_entfield))
1079 assignop = type_storep_instr[exprs[0]->expression.vtype];
1081 assignop = type_store_instr[exprs[0]->expression.vtype];
1082 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1083 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1084 exprs[0], exprs[1]);
1086 case opid3('&','~','='):
1087 /* This is like: a &= ~(b);
1088 * But QC has no bitwise-not, so we implement it as
1091 if (NotSameType(TYPE_FLOAT)) {
1092 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1093 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1094 parseerror(parser, "invalid types used in expression: %s and %s",
1098 if (ast_istype(exprs[0], ast_entfield))
1099 assignop = type_storep_instr[exprs[0]->expression.vtype];
1101 assignop = type_store_instr[exprs[0]->expression.vtype];
1102 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1105 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1111 parseerror(parser, "failed to apply operand %s", op->op);
1115 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1116 vec_push(sy->out, syexp(ctx, out));
1120 static bool parser_close_call(parser_t *parser, shunt *sy)
1122 /* was a function call */
1123 ast_expression *fun;
1129 vec_shrinkby(sy->ops, 1);
1130 fid = sy->ops[vec_size(sy->ops)].off;
1132 /* out[fid] is the function
1133 * everything above is parameters...
1134 * 0 params = nothing
1135 * 1 params = ast_expression
1139 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1140 parseerror(parser, "internal error: function call needs function and parameter list...");
1144 fun = sy->out[fid].out;
1146 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1148 parseerror(parser, "out of memory");
1152 if (fid+1 == vec_size(sy->out)) {
1155 } else if (fid+2 == vec_size(sy->out)) {
1157 vec_shrinkby(sy->out, 1);
1158 params = sy->out[vec_size(sy->out)].block;
1162 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1164 paramcount = vec_size(params->exprs);
1165 call->params = params->exprs;
1166 params->exprs = NULL;
1169 if (!ast_call_check_types(call))
1172 parseerror(parser, "invalid function call");
1176 /* overwrite fid, the function, with a call */
1177 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1179 if (fun->expression.vtype != TYPE_FUNCTION) {
1180 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1184 if (!fun->expression.next) {
1185 parseerror(parser, "could not determine function return type");
1188 if (vec_size(fun->expression.params) != paramcount &&
1189 !(fun->expression.variadic &&
1190 vec_size(fun->expression.params) < paramcount))
1193 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1195 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1196 if (opts_standard == COMPILER_GMQCC)
1199 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1200 " -> `%s` has been declared here: %s:%i",
1201 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1202 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1204 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1205 " -> `%s` has been declared here: %s:%i",
1206 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1207 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1213 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1214 "too %s parameters for call to %s: expected %i, got %i\n"
1215 " -> `%s` has been declared here: %s:%i",
1216 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1217 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1219 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1220 "too %s parameters for function call: expected %i, got %i\n"
1221 " -> `%s` has been declared here: %s:%i",
1222 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1223 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1231 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1233 if (!vec_size(sy->ops)) {
1234 parseerror(parser, "unmatched closing paren");
1237 /* this would for bit a + (x) because there are no operators inside (x)
1238 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1239 parseerror(parser, "empty parenthesis expression");
1243 while (vec_size(sy->ops)) {
1244 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1245 if (!parser_close_call(parser, sy))
1249 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1250 vec_shrinkby(sy->ops, 1);
1251 return !functions_only;
1253 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1256 /* pop off the parenthesis */
1257 vec_shrinkby(sy->ops, 1);
1258 /* then apply the index operator */
1259 if (!parser_sy_pop(parser, sy))
1263 if (!parser_sy_pop(parser, sy))
1269 static void parser_reclassify_token(parser_t *parser)
1272 for (i = 0; i < operator_count; ++i) {
1273 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1274 parser->tok = TOKEN_OPERATOR;
1280 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1282 ast_expression *expr = NULL;
1284 bool wantop = false;
1285 bool gotmemberof = false;
1287 /* count the parens because an if starts with one, so the
1288 * end of a condition is an unmatched closing paren
1296 parser->lex->flags.noops = false;
1298 parser_reclassify_token(parser);
1303 gotmemberof = false;
1305 parser->memberof = 0;
1307 if (parser->tok == TOKEN_IDENT)
1309 ast_expression *var;
1311 parseerror(parser, "expected operator or end of statement");
1316 if (opts_standard == COMPILER_GMQCC)
1318 if (parser->memberof == TYPE_ENTITY) {
1319 /* still get vars first since there could be a fieldpointer */
1320 var = parser_find_var(parser, parser_tokval(parser));
1322 var = parser_find_field(parser, parser_tokval(parser));
1324 else if (parser->memberof == TYPE_VECTOR)
1326 parseerror(parser, "TODO: implement effective vector member access");
1329 else if (parser->memberof) {
1330 parseerror(parser, "namespace for member not found");
1334 var = parser_find_var(parser, parser_tokval(parser));
1336 var = parser_find_var(parser, parser_tokval(parser));
1338 var = parser_find_field(parser, parser_tokval(parser));
1341 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1344 if (ast_istype(var, ast_value))
1345 ((ast_value*)var)->uses++;
1346 vec_push(sy.out, syexp(parser_ctx(parser), var));
1347 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1349 else if (parser->tok == TOKEN_FLOATCONST) {
1352 parseerror(parser, "expected operator or end of statement, got constant");
1356 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1359 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1360 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1362 else if (parser->tok == TOKEN_INTCONST) {
1365 parseerror(parser, "expected operator or end of statement, got constant");
1369 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1372 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1373 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1375 else if (parser->tok == TOKEN_STRINGCONST) {
1378 parseerror(parser, "expected operator or end of statement, got constant");
1382 val = parser_const_string(parser, parser_tokval(parser), false);
1385 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1386 DEBUGSHUNTDO(con_out("push string\n"));
1388 else if (parser->tok == TOKEN_VECTORCONST) {
1391 parseerror(parser, "expected operator or end of statement, got constant");
1395 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1398 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1399 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1400 parser_token(parser)->constval.v.x,
1401 parser_token(parser)->constval.v.y,
1402 parser_token(parser)->constval.v.z));
1404 else if (parser->tok == '(') {
1405 parseerror(parser, "internal error: '(' should be classified as operator");
1408 else if (parser->tok == '[') {
1409 parseerror(parser, "internal error: '[' should be classified as operator");
1412 else if (parser->tok == ')') {
1414 DEBUGSHUNTDO(con_out("do[op] )\n"));
1418 /* we do expect an operator next */
1419 /* closing an opening paren */
1420 if (!parser_close_paren(parser, &sy, false))
1423 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1427 /* allowed for function calls */
1428 if (!parser_close_paren(parser, &sy, true))
1433 else if (parser->tok == ']') {
1435 parseerror(parser, "operand expected");
1439 if (!parser_close_paren(parser, &sy, false))
1443 else if (parser->tok != TOKEN_OPERATOR) {
1445 parseerror(parser, "expected operator or end of statement");
1452 /* classify the operator */
1453 const oper_info *op;
1454 const oper_info *olast = NULL;
1456 for (o = 0; o < operator_count; ++o) {
1457 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1458 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1459 !strcmp(parser_tokval(parser), operators[o].op))
1464 if (o == operator_count) {
1465 /* no operator found... must be the end of the statement */
1468 /* found an operator */
1471 /* when declaring variables, a comma starts a new variable */
1472 if (op->id == opid1(',') && !parens && stopatcomma) {
1473 /* fixup the token */
1478 /* a colon without a pervious question mark cannot be a ternary */
1479 if (!ternaries && op->id == opid2(':','?')) {
1484 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1485 olast = &operators[vec_last(sy.ops).etype-1];
1488 (op->prec < olast->prec) ||
1489 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1491 if (!parser_sy_pop(parser, &sy))
1493 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1494 olast = &operators[vec_last(sy.ops).etype-1];
1499 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1500 /* for gmqcc standard: open up the namespace of the previous type */
1501 ast_expression *prevex = vec_last(sy.out).out;
1503 parseerror(parser, "unexpected member operator");
1506 if (prevex->expression.vtype == TYPE_ENTITY)
1507 parser->memberof = TYPE_ENTITY;
1508 else if (prevex->expression.vtype == TYPE_VECTOR)
1509 parser->memberof = TYPE_VECTOR;
1511 parseerror(parser, "type error: type has no members");
1517 if (op->id == opid1('(')) {
1519 size_t sycount = vec_size(sy.out);
1520 DEBUGSHUNTDO(con_out("push [op] (\n"));
1522 /* we expected an operator, this is the function-call operator */
1523 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1526 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1527 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1530 } else if (op->id == opid1('[')) {
1532 parseerror(parser, "unexpected array subscript");
1536 /* push both the operator and the paren, this makes life easier */
1537 vec_push(sy.ops, syop(parser_ctx(parser), op));
1538 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1540 } else if (op->id == opid2('?',':')) {
1542 vec_push(sy.ops, syop(parser_ctx(parser), op));
1545 } else if (op->id == opid2(':','?')) {
1546 /* we don't push this operator */
1550 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1551 vec_push(sy.ops, syop(parser_ctx(parser), op));
1552 wantop = !!(op->flags & OP_SUFFIX);
1555 if (!parser_next(parser)) {
1558 if (parser->tok == ';' ||
1559 (!parens && parser->tok == ']'))
1565 while (vec_size(sy.ops)) {
1566 if (!parser_sy_pop(parser, &sy))
1570 parser->lex->flags.noops = true;
1571 if (!vec_size(sy.out)) {
1572 parseerror(parser, "empty expression");
1575 expr = sy.out[0].out;
1578 DEBUGSHUNTDO(con_out("shunt done\n"));
1582 parser->lex->flags.noops = true;
1588 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1590 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1593 if (!parser_next(parser)) {
1600 static void parser_enterblock(parser_t *parser)
1602 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1603 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1604 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1605 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1608 static bool parser_leaveblock(parser_t *parser)
1611 size_t locals, typedefs;
1613 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1614 parseerror(parser, "internal error: parser_leaveblock with no block");
1618 util_htdel(vec_last(parser->variables));
1619 vec_pop(parser->variables);
1620 if (!vec_size(parser->_blocklocals)) {
1621 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1625 locals = vec_last(parser->_blocklocals);
1626 vec_pop(parser->_blocklocals);
1627 while (vec_size(parser->_locals) != locals) {
1628 ast_expression *e = vec_last(parser->_locals);
1629 ast_value *v = (ast_value*)e;
1630 vec_pop(parser->_locals);
1631 if (ast_istype(e, ast_value) && !v->uses) {
1632 if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
1637 typedefs = vec_last(parser->_blocktypedefs);
1638 while (vec_size(parser->_typedefs) != typedefs) {
1639 ast_delete(vec_last(parser->_typedefs));
1640 vec_pop(parser->_typedefs);
1642 util_htdel(vec_last(parser->typedefs));
1643 vec_pop(parser->typedefs);
1648 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1650 vec_push(parser->_locals, e);
1651 util_htset(vec_last(parser->variables), name, (void*)e);
1654 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1657 ast_expression *cond, *ontrue, *onfalse = NULL;
1660 lex_ctx ctx = parser_ctx(parser);
1662 (void)block; /* not touching */
1664 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1665 if (!parser_next(parser)) {
1666 parseerror(parser, "expected condition or 'not'");
1669 if (parser->tok == TOKEN_KEYWORD && !strcmp(parser_tokval(parser), "not")) {
1671 if (!parser_next(parser)) {
1672 parseerror(parser, "expected condition in parenthesis");
1676 if (parser->tok != '(') {
1677 parseerror(parser, "expected 'if' condition in parenthesis");
1680 /* parse into the expression */
1681 if (!parser_next(parser)) {
1682 parseerror(parser, "expected 'if' condition after opening paren");
1685 /* parse the condition */
1686 cond = parse_expression_leave(parser, false);
1690 if (parser->tok != ')') {
1691 parseerror(parser, "expected closing paren after 'if' condition");
1695 /* parse into the 'then' branch */
1696 if (!parser_next(parser)) {
1697 parseerror(parser, "expected statement for on-true branch of 'if'");
1701 ontrue = parse_statement_or_block(parser);
1706 /* check for an else */
1707 if (!strcmp(parser_tokval(parser), "else")) {
1708 /* parse into the 'else' branch */
1709 if (!parser_next(parser)) {
1710 parseerror(parser, "expected on-false branch after 'else'");
1715 onfalse = parse_statement_or_block(parser);
1724 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1726 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1727 *out = (ast_expression*)ifthen;
1731 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1734 ast_expression *cond, *ontrue;
1736 lex_ctx ctx = parser_ctx(parser);
1738 (void)block; /* not touching */
1740 /* skip the 'while' and check for opening paren */
1741 if (!parser_next(parser) || parser->tok != '(') {
1742 parseerror(parser, "expected 'while' condition in parenthesis");
1745 /* parse into the expression */
1746 if (!parser_next(parser)) {
1747 parseerror(parser, "expected 'while' condition after opening paren");
1750 /* parse the condition */
1751 cond = parse_expression_leave(parser, false);
1755 if (parser->tok != ')') {
1756 parseerror(parser, "expected closing paren after 'while' condition");
1760 /* parse into the 'then' branch */
1761 if (!parser_next(parser)) {
1762 parseerror(parser, "expected while-loop body");
1766 ontrue = parse_statement_or_block(parser);
1772 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1773 *out = (ast_expression*)aloop;
1777 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1780 ast_expression *cond, *ontrue;
1782 lex_ctx ctx = parser_ctx(parser);
1784 (void)block; /* not touching */
1786 /* skip the 'do' and get the body */
1787 if (!parser_next(parser)) {
1788 parseerror(parser, "expected loop body");
1791 ontrue = parse_statement_or_block(parser);
1795 /* expect the "while" */
1796 if (parser->tok != TOKEN_KEYWORD ||
1797 strcmp(parser_tokval(parser), "while"))
1799 parseerror(parser, "expected 'while' and condition");
1804 /* skip the 'while' and check for opening paren */
1805 if (!parser_next(parser) || parser->tok != '(') {
1806 parseerror(parser, "expected 'while' condition in parenthesis");
1810 /* parse into the expression */
1811 if (!parser_next(parser)) {
1812 parseerror(parser, "expected 'while' condition after opening paren");
1816 /* parse the condition */
1817 cond = parse_expression_leave(parser, false);
1821 if (parser->tok != ')') {
1822 parseerror(parser, "expected closing paren after 'while' condition");
1828 if (!parser_next(parser) || parser->tok != ';') {
1829 parseerror(parser, "expected semicolon after condition");
1835 if (!parser_next(parser)) {
1836 parseerror(parser, "parse error");
1842 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1843 *out = (ast_expression*)aloop;
1847 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1850 ast_expression *initexpr, *cond, *increment, *ontrue;
1854 lex_ctx ctx = parser_ctx(parser);
1856 parser_enterblock(parser);
1863 /* skip the 'while' and check for opening paren */
1864 if (!parser_next(parser) || parser->tok != '(') {
1865 parseerror(parser, "expected 'for' expressions in parenthesis");
1868 /* parse into the expression */
1869 if (!parser_next(parser)) {
1870 parseerror(parser, "expected 'for' initializer after opening paren");
1875 if (parser->tok == TOKEN_IDENT)
1876 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
1878 if (typevar || parser->tok == TOKEN_TYPENAME) {
1879 if (opts_standard != COMPILER_GMQCC) {
1880 if (parsewarning(parser, WARN_EXTENSIONS,
1881 "current standard does not allow variable declarations in for-loop initializers"))
1885 parseerror(parser, "TODO: assignment of new variables to be non-const");
1887 if (!parse_variable(parser, block, true, false, typevar))
1890 else if (parser->tok != ';')
1892 initexpr = parse_expression_leave(parser, false);
1897 /* move on to condition */
1898 if (parser->tok != ';') {
1899 parseerror(parser, "expected semicolon after for-loop initializer");
1902 if (!parser_next(parser)) {
1903 parseerror(parser, "expected for-loop condition");
1907 /* parse the condition */
1908 if (parser->tok != ';') {
1909 cond = parse_expression_leave(parser, false);
1914 /* move on to incrementor */
1915 if (parser->tok != ';') {
1916 parseerror(parser, "expected semicolon after for-loop initializer");
1919 if (!parser_next(parser)) {
1920 parseerror(parser, "expected for-loop condition");
1924 /* parse the incrementor */
1925 if (parser->tok != ')') {
1926 increment = parse_expression_leave(parser, false);
1929 if (!ast_istype(increment, ast_store) &&
1930 !ast_istype(increment, ast_call) &&
1931 !ast_istype(increment, ast_binstore))
1933 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
1939 if (parser->tok != ')') {
1940 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1943 /* parse into the 'then' branch */
1944 if (!parser_next(parser)) {
1945 parseerror(parser, "expected for-loop body");
1948 ontrue = parse_statement_or_block(parser);
1953 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1954 *out = (ast_expression*)aloop;
1956 if (!parser_leaveblock(parser))
1960 if (initexpr) ast_delete(initexpr);
1961 if (cond) ast_delete(cond);
1962 if (increment) ast_delete(increment);
1963 (void)!parser_leaveblock(parser);
1967 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
1969 ast_expression *exp = NULL;
1970 ast_return *ret = NULL;
1971 ast_value *expected = parser->function->vtype;
1973 (void)block; /* not touching */
1975 if (!parser_next(parser)) {
1976 parseerror(parser, "expected return expression");
1980 if (parser->tok != ';') {
1981 exp = parse_expression(parser, false);
1985 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
1986 parseerror(parser, "return with invalid expression");
1989 ret = ast_return_new(exp->expression.node.context, exp);
1995 if (!parser_next(parser))
1996 parseerror(parser, "parse error");
1997 if (expected->expression.next->expression.vtype != TYPE_VOID) {
1998 if (opts_standard != COMPILER_GMQCC)
1999 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2001 parseerror(parser, "return without value");
2003 ret = ast_return_new(parser_ctx(parser), NULL);
2005 *out = (ast_expression*)ret;
2009 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2011 lex_ctx ctx = parser_ctx(parser);
2013 (void)block; /* not touching */
2015 if (!parser_next(parser) || parser->tok != ';') {
2016 parseerror(parser, "expected semicolon");
2020 if (!parser_next(parser))
2021 parseerror(parser, "parse error");
2023 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
2027 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2029 ast_expression *operand;
2031 ast_switch *switchnode;
2032 ast_switch_case swcase;
2034 lex_ctx ctx = parser_ctx(parser);
2036 (void)block; /* not touching */
2038 /* parse over the opening paren */
2039 if (!parser_next(parser) || parser->tok != '(') {
2040 parseerror(parser, "expected switch operand in parenthesis");
2044 /* parse into the expression */
2045 if (!parser_next(parser)) {
2046 parseerror(parser, "expected switch operand");
2049 /* parse the operand */
2050 operand = parse_expression_leave(parser, false);
2054 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2055 opval = (ast_value*)operand;
2056 if (!ast_istype(operand, ast_value) || !opval->isconst) {
2057 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2063 switchnode = ast_switch_new(ctx, operand);
2066 if (parser->tok != ')') {
2067 ast_delete(switchnode);
2068 parseerror(parser, "expected closing paren after 'switch' operand");
2072 /* parse over the opening paren */
2073 if (!parser_next(parser) || parser->tok != '{') {
2074 ast_delete(switchnode);
2075 parseerror(parser, "expected list of cases");
2079 if (!parser_next(parser)) {
2080 ast_delete(switchnode);
2081 parseerror(parser, "expected 'case' or 'default'");
2086 while (parser->tok != '}') {
2087 ast_block *caseblock;
2089 if (parser->tok != TOKEN_KEYWORD) {
2090 ast_delete(switchnode);
2091 parseerror(parser, "expected 'case' or 'default'");
2094 if (!strcmp(parser_tokval(parser), "case")) {
2095 if (!parser_next(parser)) {
2096 ast_delete(switchnode);
2097 parseerror(parser, "expected expression for case");
2100 swcase.value = parse_expression_leave(parser, false);
2101 if (!swcase.value) {
2102 ast_delete(switchnode);
2103 parseerror(parser, "expected expression for case");
2107 else if (!strcmp(parser_tokval(parser), "default")) {
2108 swcase.value = NULL;
2109 if (!parser_next(parser)) {
2110 ast_delete(switchnode);
2111 parseerror(parser, "expected colon");
2116 /* Now the colon and body */
2117 if (parser->tok != ':') {
2118 if (swcase.value) ast_unref(swcase.value);
2119 ast_delete(switchnode);
2120 parseerror(parser, "expected colon");
2124 if (!parser_next(parser)) {
2125 if (swcase.value) ast_unref(swcase.value);
2126 ast_delete(switchnode);
2127 parseerror(parser, "expected statements or case");
2130 caseblock = ast_block_new(parser_ctx(parser));
2132 if (swcase.value) ast_unref(swcase.value);
2133 ast_delete(switchnode);
2136 swcase.code = (ast_expression*)caseblock;
2137 vec_push(switchnode->cases, swcase);
2139 ast_expression *expr;
2140 if (parser->tok == '}')
2142 if (parser->tok == TOKEN_KEYWORD) {
2143 if (!strcmp(parser_tokval(parser), "case") ||
2144 !strcmp(parser_tokval(parser), "default"))
2149 if (!parse_statement(parser, caseblock, &expr, true)) {
2150 ast_delete(switchnode);
2155 vec_push(caseblock->exprs, expr);
2160 if (parser->tok != '}') {
2161 ast_delete(switchnode);
2162 parseerror(parser, "expected closing paren of case list");
2165 if (!parser_next(parser)) {
2166 ast_delete(switchnode);
2167 parseerror(parser, "parse error after switch");
2170 *out = (ast_expression*)switchnode;
2174 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2176 ast_value *typevar = NULL;
2177 if (parser->tok == TOKEN_IDENT)
2178 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2180 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2182 /* local variable */
2184 parseerror(parser, "cannot declare a variable from here");
2187 if (opts_standard == COMPILER_QCC) {
2188 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2191 if (!parse_variable(parser, block, false, false, typevar))
2196 else if (parser->tok == TOKEN_KEYWORD)
2198 if (!strcmp(parser_tokval(parser), "local"))
2201 parseerror(parser, "cannot declare a local variable here");
2204 if (!parser_next(parser)) {
2205 parseerror(parser, "expected variable declaration");
2208 if (!parse_variable(parser, block, true, false, NULL))
2213 else if (!strcmp(parser_tokval(parser), "return"))
2215 return parse_return(parser, block, out);
2217 else if (!strcmp(parser_tokval(parser), "if"))
2219 return parse_if(parser, block, out);
2221 else if (!strcmp(parser_tokval(parser), "while"))
2223 return parse_while(parser, block, out);
2225 else if (!strcmp(parser_tokval(parser), "do"))
2227 return parse_dowhile(parser, block, out);
2229 else if (!strcmp(parser_tokval(parser), "for"))
2231 if (opts_standard == COMPILER_QCC) {
2232 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2235 return parse_for(parser, block, out);
2237 else if (!strcmp(parser_tokval(parser), "break"))
2239 return parse_break_continue(parser, block, out, false);
2241 else if (!strcmp(parser_tokval(parser), "continue"))
2243 return parse_break_continue(parser, block, out, true);
2245 else if (!strcmp(parser_tokval(parser), "switch"))
2247 return parse_switch(parser, block, out);
2249 else if (!strcmp(parser_tokval(parser), "case") ||
2250 !strcmp(parser_tokval(parser), "default"))
2253 parseerror(parser, "unexpected 'case' label");
2258 else if (!strcmp(parser_tokval(parser), "typedef"))
2260 if (!parser_next(parser)) {
2261 parseerror(parser, "expected type definition after 'typedef'");
2264 return parse_typedef(parser);
2266 parseerror(parser, "Unexpected keyword");
2269 else if (parser->tok == '{')
2272 inner = parse_block(parser, false);
2275 *out = (ast_expression*)inner;
2280 ast_expression *exp = parse_expression(parser, false);
2284 if (!ast_istype(exp, ast_store) &&
2285 !ast_istype(exp, ast_call) &&
2286 !ast_istype(exp, ast_binstore))
2288 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2295 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn)
2299 parser_enterblock(parser);
2301 if (!parser_next(parser)) { /* skip the '{' */
2302 parseerror(parser, "expected function body");
2306 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2308 ast_expression *expr = NULL;
2309 if (parser->tok == '}')
2312 if (!parse_statement(parser, block, &expr, false)) {
2313 /* parseerror(parser, "parse error"); */
2319 vec_push(block->exprs, expr);
2322 if (parser->tok != '}') {
2325 if (warnreturn && parser->function->vtype->expression.next->expression.vtype != TYPE_VOID)
2327 if (!vec_size(block->exprs) ||
2328 !ast_istype(vec_last(block->exprs), ast_return))
2330 if (parsewarning(parser, WARN_MISSING_RETURN_VALUES, "control reaches end of non-void function")) {
2336 (void)parser_next(parser);
2340 if (!parser_leaveblock(parser))
2342 return retval && !!block;
2345 static ast_block* parse_block(parser_t *parser, bool warnreturn)
2348 block = ast_block_new(parser_ctx(parser));
2351 if (!parse_block_into(parser, block, warnreturn)) {
2352 ast_block_delete(block);
2358 static ast_expression* parse_statement_or_block(parser_t *parser)
2360 ast_expression *expr = NULL;
2361 if (parser->tok == '{')
2362 return (ast_expression*)parse_block(parser, false);
2363 if (!parse_statement(parser, NULL, &expr, false))
2368 static bool create_vector_members(ast_value *var, ast_member **me)
2371 size_t len = strlen(var->name);
2373 for (i = 0; i < 3; ++i) {
2374 char *name = mem_a(len+3);
2375 memcpy(name, var->name, len);
2377 name[len+1] = 'x'+i;
2379 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
2388 do { ast_member_delete(me[--i]); } while(i);
2392 static bool parse_function_body(parser_t *parser, ast_value *var)
2394 ast_block *block = NULL;
2399 ast_expression *framenum = NULL;
2400 ast_expression *nextthink = NULL;
2401 /* None of the following have to be deleted */
2402 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2403 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2404 bool has_frame_think;
2408 has_frame_think = false;
2409 old = parser->function;
2411 if (var->expression.variadic) {
2412 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2413 "variadic function with implementation will not be able to access additional parameters"))
2419 if (parser->tok == '[') {
2420 /* got a frame definition: [ framenum, nextthink ]
2421 * this translates to:
2422 * self.frame = framenum;
2423 * self.nextthink = time + 0.1;
2424 * self.think = nextthink;
2428 fld_think = parser_find_field(parser, "think");
2429 fld_nextthink = parser_find_field(parser, "nextthink");
2430 fld_frame = parser_find_field(parser, "frame");
2431 if (!fld_think || !fld_nextthink || !fld_frame) {
2432 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2433 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2436 gbl_time = parser_find_global(parser, "time");
2437 gbl_self = parser_find_global(parser, "self");
2438 if (!gbl_time || !gbl_self) {
2439 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2440 parseerror(parser, "please declare the following globals: `time`, `self`");
2444 if (!parser_next(parser))
2447 framenum = parse_expression_leave(parser, true);
2449 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2452 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->isconst) {
2453 ast_unref(framenum);
2454 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2458 if (parser->tok != ',') {
2459 ast_unref(framenum);
2460 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2461 parseerror(parser, "Got a %i\n", parser->tok);
2465 if (!parser_next(parser)) {
2466 ast_unref(framenum);
2470 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2472 /* qc allows the use of not-yet-declared functions here
2473 * - this automatically creates a prototype */
2474 ast_value *thinkfunc;
2475 ast_expression *functype = fld_think->expression.next;
2477 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2478 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2479 ast_unref(framenum);
2480 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2484 if (!parser_next(parser)) {
2485 ast_unref(framenum);
2486 ast_delete(thinkfunc);
2490 vec_push(parser->globals, (ast_expression*)thinkfunc);
2491 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
2492 nextthink = (ast_expression*)thinkfunc;
2495 nextthink = parse_expression_leave(parser, true);
2497 ast_unref(framenum);
2498 parseerror(parser, "expected a think-function in [frame,think] notation");
2503 if (!ast_istype(nextthink, ast_value)) {
2504 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2508 if (retval && parser->tok != ']') {
2509 parseerror(parser, "expected closing `]` for [frame,think] notation");
2513 if (retval && !parser_next(parser)) {
2517 if (retval && parser->tok != '{') {
2518 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2523 ast_unref(nextthink);
2524 ast_unref(framenum);
2528 has_frame_think = true;
2531 block = ast_block_new(parser_ctx(parser));
2533 parseerror(parser, "failed to allocate block");
2534 if (has_frame_think) {
2535 ast_unref(nextthink);
2536 ast_unref(framenum);
2541 if (has_frame_think) {
2543 ast_expression *self_frame;
2544 ast_expression *self_nextthink;
2545 ast_expression *self_think;
2546 ast_expression *time_plus_1;
2547 ast_store *store_frame;
2548 ast_store *store_nextthink;
2549 ast_store *store_think;
2551 ctx = parser_ctx(parser);
2552 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2553 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2554 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2556 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2557 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2559 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2560 if (self_frame) ast_delete(self_frame);
2561 if (self_nextthink) ast_delete(self_nextthink);
2562 if (self_think) ast_delete(self_think);
2563 if (time_plus_1) ast_delete(time_plus_1);
2569 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2570 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2571 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2574 ast_delete(self_frame);
2577 if (!store_nextthink) {
2578 ast_delete(self_nextthink);
2582 ast_delete(self_think);
2586 if (store_frame) ast_delete(store_frame);
2587 if (store_nextthink) ast_delete(store_nextthink);
2588 if (store_think) ast_delete(store_think);
2591 vec_push(block->exprs, (ast_expression*)store_frame);
2592 vec_push(block->exprs, (ast_expression*)store_nextthink);
2593 vec_push(block->exprs, (ast_expression*)store_think);
2597 parseerror(parser, "failed to generate code for [frame,think]");
2598 ast_unref(nextthink);
2599 ast_unref(framenum);
2605 parser_enterblock(parser);
2607 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
2609 ast_value *param = var->expression.params[parami];
2612 if (param->expression.vtype != TYPE_VECTOR &&
2613 (param->expression.vtype != TYPE_FIELD ||
2614 param->expression.next->expression.vtype != TYPE_VECTOR))
2619 if (!create_vector_members(param, me)) {
2620 ast_block_delete(block);
2624 for (e = 0; e < 3; ++e) {
2625 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
2626 ast_block_collect(block, (ast_expression*)me[e]);
2630 func = ast_function_new(ast_ctx(var), var->name, var);
2632 parseerror(parser, "failed to allocate function for `%s`", var->name);
2633 ast_block_delete(block);
2636 vec_push(parser->functions, func);
2638 parser->function = func;
2639 if (!parse_block_into(parser, block, true)) {
2640 ast_block_delete(block);
2644 vec_push(func->blocks, block);
2646 parser->function = old;
2647 if (!parser_leaveblock(parser))
2649 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
2650 parseerror(parser, "internal error: local scopes left");
2654 if (parser->tok == ';')
2655 return parser_next(parser);
2656 else if (opts_standard == COMPILER_QCC)
2657 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
2661 vec_pop(parser->functions);
2662 ast_function_delete(func);
2663 var->constval.vfunc = NULL;
2666 (void)!parser_leaveblock(parser);
2667 parser->function = old;
2671 static ast_expression *array_accessor_split(
2676 ast_expression *left,
2677 ast_expression *right
2683 lex_ctx ctx = ast_ctx(array);
2685 if (!left || !right) {
2686 if (left) ast_delete(left);
2687 if (right) ast_delete(right);
2691 cmp = ast_binary_new(ctx, INSTR_LT,
2692 (ast_expression*)index,
2693 (ast_expression*)parser_const_float(parser, middle));
2697 parseerror(parser, "internal error: failed to create comparison for array setter");
2701 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
2703 ast_delete(cmp); /* will delete left and right */
2704 parseerror(parser, "internal error: failed to create conditional jump for array setter");
2708 return (ast_expression*)ifthen;
2711 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
2713 lex_ctx ctx = ast_ctx(array);
2715 if (from+1 == afterend) {
2716 /* set this value */
2719 ast_array_index *subscript;
2721 int assignop = type_store_instr[value->expression.vtype];
2723 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2724 assignop = INSTR_STORE_V;
2726 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2730 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
2732 ast_delete(subscript);
2736 block = ast_block_new(ctx);
2742 vec_push(block->exprs, (ast_expression*)st);
2744 ret = ast_return_new(ctx, NULL);
2750 vec_push(block->exprs, (ast_expression*)ret);
2752 return (ast_expression*)block;
2754 ast_expression *left, *right;
2755 size_t diff = afterend - from;
2756 size_t middle = from + diff/2;
2757 left = array_setter_node(parser, array, index, value, from, middle);
2758 right = array_setter_node(parser, array, index, value, middle, afterend);
2759 return array_accessor_split(parser, array, index, middle, left, right);
2763 static ast_expression *array_field_setter_node(
2772 lex_ctx ctx = ast_ctx(array);
2774 if (from+1 == afterend) {
2775 /* set this value */
2778 ast_entfield *entfield;
2779 ast_array_index *subscript;
2781 int assignop = type_storep_instr[value->expression.vtype];
2783 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2784 assignop = INSTR_STOREP_V;
2786 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2790 entfield = ast_entfield_new_force(ctx,
2791 (ast_expression*)entity,
2792 (ast_expression*)subscript,
2793 (ast_expression*)subscript);
2795 ast_delete(subscript);
2799 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
2801 ast_delete(entfield);
2805 block = ast_block_new(ctx);
2811 vec_push(block->exprs, (ast_expression*)st);
2813 ret = ast_return_new(ctx, NULL);
2819 vec_push(block->exprs, (ast_expression*)ret);
2821 return (ast_expression*)block;
2823 ast_expression *left, *right;
2824 size_t diff = afterend - from;
2825 size_t middle = from + diff/2;
2826 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
2827 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
2828 return array_accessor_split(parser, array, index, middle, left, right);
2832 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
2834 lex_ctx ctx = ast_ctx(array);
2836 if (from+1 == afterend) {
2838 ast_array_index *subscript;
2840 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2844 ret = ast_return_new(ctx, (ast_expression*)subscript);
2846 ast_delete(subscript);
2850 return (ast_expression*)ret;
2852 ast_expression *left, *right;
2853 size_t diff = afterend - from;
2854 size_t middle = from + diff/2;
2855 left = array_getter_node(parser, array, index, from, middle);
2856 right = array_getter_node(parser, array, index, middle, afterend);
2857 return array_accessor_split(parser, array, index, middle, left, right);
2861 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
2863 ast_function *func = NULL;
2864 ast_value *fval = NULL;
2865 ast_block *body = NULL;
2867 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
2869 parseerror(parser, "failed to create accessor function value");
2873 func = ast_function_new(ast_ctx(array), funcname, fval);
2876 parseerror(parser, "failed to create accessor function node");
2880 body = ast_block_new(ast_ctx(array));
2882 parseerror(parser, "failed to create block for array accessor");
2888 vec_push(func->blocks, body);
2891 vec_push(parser->accessors, fval);
2896 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
2898 ast_expression *root = NULL;
2899 ast_value *index = NULL;
2900 ast_value *value = NULL;
2904 if (!ast_istype(array->expression.next, ast_value)) {
2905 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2909 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2911 func = fval->constval.vfunc;
2912 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2914 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2915 value = ast_value_copy((ast_value*)array->expression.next);
2917 if (!index || !value) {
2918 parseerror(parser, "failed to create locals for array accessor");
2921 (void)!ast_value_set_name(value, "value"); /* not important */
2922 vec_push(fval->expression.params, index);
2923 vec_push(fval->expression.params, value);
2925 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
2927 parseerror(parser, "failed to build accessor search tree");
2931 vec_push(func->blocks[0]->exprs, root);
2932 array->setter = fval;
2935 if (index) ast_delete(index);
2936 if (value) ast_delete(value);
2937 if (root) ast_delete(root);
2943 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
2945 ast_expression *root = NULL;
2946 ast_value *entity = NULL;
2947 ast_value *index = NULL;
2948 ast_value *value = NULL;
2952 if (!ast_istype(array->expression.next, ast_value)) {
2953 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2957 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2959 func = fval->constval.vfunc;
2960 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2962 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
2963 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2964 value = ast_value_copy((ast_value*)array->expression.next);
2965 if (!entity || !index || !value) {
2966 parseerror(parser, "failed to create locals for array accessor");
2969 (void)!ast_value_set_name(value, "value"); /* not important */
2970 vec_push(fval->expression.params, entity);
2971 vec_push(fval->expression.params, index);
2972 vec_push(fval->expression.params, value);
2974 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
2976 parseerror(parser, "failed to build accessor search tree");
2980 vec_push(func->blocks[0]->exprs, root);
2981 array->setter = fval;
2984 if (entity) ast_delete(entity);
2985 if (index) ast_delete(index);
2986 if (value) ast_delete(value);
2987 if (root) ast_delete(root);
2993 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
2995 ast_expression *root = NULL;
2996 ast_value *index = NULL;
3000 /* NOTE: checking array->expression.next rather than elemtype since
3001 * for fields elemtype is a temporary fieldtype.
3003 if (!ast_istype(array->expression.next, ast_value)) {
3004 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3008 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3010 func = fval->constval.vfunc;
3011 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3013 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3016 parseerror(parser, "failed to create locals for array accessor");
3019 vec_push(fval->expression.params, index);
3021 root = array_getter_node(parser, array, index, 0, array->expression.count);
3023 parseerror(parser, "failed to build accessor search tree");
3027 vec_push(func->blocks[0]->exprs, root);
3028 array->getter = fval;
3031 if (index) ast_delete(index);
3032 if (root) ast_delete(root);
3038 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3039 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3047 bool variadic = false;
3049 ctx = parser_ctx(parser);
3051 /* for the sake of less code we parse-in in this function */
3052 if (!parser_next(parser)) {
3053 parseerror(parser, "expected parameter list");
3059 /* parse variables until we hit a closing paren */
3060 while (parser->tok != ')') {
3062 /* there must be commas between them */
3063 if (parser->tok != ',') {
3064 parseerror(parser, "expected comma or end of parameter list");
3067 if (!parser_next(parser)) {
3068 parseerror(parser, "expected parameter");
3074 if (parser->tok == TOKEN_DOTS) {
3075 /* '...' indicates a varargs function */
3077 if (!parser_next(parser)) {
3078 parseerror(parser, "expected parameter");
3081 if (parser->tok != ')') {
3082 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3088 /* for anything else just parse a typename */
3089 param = parse_typename(parser, NULL, NULL);
3092 vec_push(params, param);
3093 if (param->expression.vtype >= TYPE_VARIANT) {
3094 char typename[1024];
3095 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
3096 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
3103 if (vec_size(params) > 8 && opts_standard == COMPILER_QCC)
3104 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3107 if (!parser_next(parser)) {
3108 parseerror(parser, "parse error after typename");
3112 /* now turn 'var' into a function type */
3113 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3114 fval->expression.next = (ast_expression*)var;
3115 fval->expression.variadic = variadic;
3118 var->expression.params = params;
3125 for (i = 0; i < vec_size(params); ++i)
3126 ast_delete(params[i]);
3131 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3133 ast_expression *cexp;
3134 ast_value *cval, *tmp;
3137 ctx = parser_ctx(parser);
3139 if (!parser_next(parser)) {
3141 parseerror(parser, "expected array-size");
3145 cexp = parse_expression_leave(parser, true);
3147 if (!cexp || !ast_istype(cexp, ast_value)) {
3151 parseerror(parser, "expected array-size as constant positive integer");
3154 cval = (ast_value*)cexp;
3156 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3157 tmp->expression.next = (ast_expression*)var;
3160 if (cval->expression.vtype == TYPE_INTEGER)
3161 tmp->expression.count = cval->constval.vint;
3162 else if (cval->expression.vtype == TYPE_FLOAT)
3163 tmp->expression.count = cval->constval.vfloat;
3167 parseerror(parser, "array-size must be a positive integer constant");
3172 if (parser->tok != ']') {
3174 parseerror(parser, "expected ']' after array-size");
3177 if (!parser_next(parser)) {
3179 parseerror(parser, "error after parsing array size");
3185 /* Parse a complete typename.
3186 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3187 * but when parsing variables separated by comma
3188 * 'storebase' should point to where the base-type should be kept.
3189 * The base type makes up every bit of type information which comes *before* the
3192 * The following will be parsed in its entirety:
3194 * The 'basetype' in this case is 'void()'
3195 * and if there's a comma after it, say:
3197 * then the type-information 'void()' can be stored in 'storebase'
3199 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3201 ast_value *var, *tmp;
3204 const char *name = NULL;
3205 bool isfield = false;
3206 bool wasarray = false;
3207 size_t morefields = 0;
3209 ctx = parser_ctx(parser);
3211 /* types may start with a dot */
3212 if (parser->tok == '.') {
3214 /* if we parsed a dot we need a typename now */
3215 if (!parser_next(parser)) {
3216 parseerror(parser, "expected typename for field definition");
3220 /* Further dots are handled seperately because they won't be part of the
3223 while (parser->tok == '.') {
3225 if (!parser_next(parser)) {
3226 parseerror(parser, "expected typename for field definition");
3231 if (parser->tok == TOKEN_IDENT)
3232 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
3233 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
3234 parseerror(parser, "expected typename");
3239 /* generate the basic type value */
3240 if (cached_typedef) {
3241 var = ast_value_copy(cached_typedef);
3242 ast_value_set_name(var, "<type(from_def)>");
3244 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3246 for (; morefields; --morefields) {
3247 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
3248 tmp->expression.next = (ast_expression*)var;
3252 /* do not yet turn into a field - remember:
3253 * .void() foo; is a field too
3254 * .void()() foo; is a function
3258 if (!parser_next(parser)) {
3260 parseerror(parser, "parse error after typename");
3264 /* an opening paren now starts the parameter-list of a function
3265 * this is where original-QC has parameter lists.
3266 * We allow a single parameter list here.
3267 * Much like fteqcc we don't allow `float()() x`
3269 if (parser->tok == '(') {
3270 var = parse_parameter_list(parser, var);
3275 /* store the base if requested */
3277 *storebase = ast_value_copy(var);
3279 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3280 tmp->expression.next = (ast_expression*)*storebase;
3285 /* there may be a name now */
3286 if (parser->tok == TOKEN_IDENT) {
3287 name = util_strdup(parser_tokval(parser));
3289 if (!parser_next(parser)) {
3291 parseerror(parser, "error after variable or field declaration");
3296 /* now this may be an array */
3297 if (parser->tok == '[') {
3299 var = parse_arraysize(parser, var);
3304 /* This is the point where we can turn it into a field */
3306 /* turn it into a field if desired */
3307 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3308 tmp->expression.next = (ast_expression*)var;
3312 /* now there may be function parens again */
3313 if (parser->tok == '(' && opts_standard == COMPILER_QCC)
3314 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3315 if (parser->tok == '(' && wasarray)
3316 parseerror(parser, "arrays as part of a return type is not supported");
3317 while (parser->tok == '(') {
3318 var = parse_parameter_list(parser, var);
3327 /* finally name it */
3329 if (!ast_value_set_name(var, name)) {
3331 parseerror(parser, "internal error: failed to set name");
3334 /* free the name, ast_value_set_name duplicates */
3341 static bool parse_typedef(parser_t *parser)
3343 ast_value *typevar, *oldtype;
3344 ast_expression *old;
3346 typevar = parse_typename(parser, NULL, NULL);
3351 if ( (old = parser_find_var(parser, typevar->name)) ) {
3352 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
3353 " -> `%s` has been declared here: %s:%i",
3354 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
3355 ast_delete(typevar);
3359 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
3360 parseerror(parser, "type `%s` has already been declared here: %s:%i",
3361 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
3362 ast_delete(typevar);
3366 vec_push(parser->_typedefs, typevar);
3367 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
3369 if (parser->tok != ';') {
3370 parseerror(parser, "expected semicolon after typedef");
3373 if (!parser_next(parser)) {
3374 parseerror(parser, "parse error after typedef");
3381 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, bool is_const, ast_value *cached_typedef)
3385 ast_expression *old;
3389 ast_value *basetype = NULL;
3391 bool isparam = false;
3392 bool isvector = false;
3393 bool cleanvar = true;
3394 bool wasarray = false;
3398 /* get the first complete variable */
3399 var = parse_typename(parser, &basetype, cached_typedef);
3402 ast_delete(basetype);
3410 /* Part 0: finish the type */
3411 if (parser->tok == '(') {
3412 if (opts_standard == COMPILER_QCC)
3413 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3414 var = parse_parameter_list(parser, var);
3420 /* we only allow 1-dimensional arrays */
3421 if (parser->tok == '[') {
3423 var = parse_arraysize(parser, var);
3429 if (parser->tok == '(' && wasarray) {
3430 parseerror(parser, "arrays as part of a return type is not supported");
3431 /* we'll still parse the type completely for now */
3433 /* for functions returning functions */
3434 while (parser->tok == '(') {
3435 if (opts_standard == COMPILER_QCC)
3436 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3437 var = parse_parameter_list(parser, var);
3445 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3446 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3447 * is then filled with the previous definition and the parameter-names replaced.
3450 /* Deal with end_sys_ vars */
3452 if (!strcmp(var->name, "end_sys_globals")) {
3453 parser->crc_globals = vec_size(parser->globals);
3456 else if (!strcmp(var->name, "end_sys_fields")) {
3457 parser->crc_fields = vec_size(parser->fields);
3460 if (was_end && var->expression.vtype == TYPE_FIELD) {
3461 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3462 "global '%s' hint should not be a field",
3463 parser_tokval(parser)))
3470 if (!nofields && var->expression.vtype == TYPE_FIELD)
3472 /* deal with field declarations */
3473 old = parser_find_field(parser, var->name);
3475 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3476 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3485 parseerror(parser, "field `%s` already declared here: %s:%i",
3486 var->name, ast_ctx(old).file, ast_ctx(old).line);
3491 if (opts_standard == COMPILER_QCC &&
3492 (old = parser_find_global(parser, var->name)))
3494 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3495 parseerror(parser, "field `%s` already declared here: %s:%i",
3496 var->name, ast_ctx(old).file, ast_ctx(old).line);
3503 /* deal with other globals */
3504 old = parser_find_global(parser, var->name);
3505 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3507 /* This is a function which had a prototype */
3508 if (!ast_istype(old, ast_value)) {
3509 parseerror(parser, "internal error: prototype is not an ast_value");
3513 proto = (ast_value*)old;
3514 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3515 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3517 ast_ctx(proto).file, ast_ctx(proto).line);
3521 /* we need the new parameter-names */
3522 for (i = 0; i < vec_size(proto->expression.params); ++i)
3523 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
3531 if (opts_standard == COMPILER_GMQCC) {
3532 parseerror(parser, "global `%s` already declared here: %s:%i",
3533 var->name, ast_ctx(old).file, ast_ctx(old).line);
3537 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
3538 "global `%s` already declared here: %s:%i",
3539 var->name, ast_ctx(old).file, ast_ctx(old).line))
3546 if (opts_standard == COMPILER_QCC &&
3547 (old = parser_find_field(parser, var->name)))
3549 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3550 parseerror(parser, "global `%s` already declared here: %s:%i",
3551 var->name, ast_ctx(old).file, ast_ctx(old).line);
3558 else /* it's not a global */
3560 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
3561 if (old && !isparam) {
3562 parseerror(parser, "local `%s` already declared here: %s:%i",
3563 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3567 old = parser_find_local(parser, var->name, 0, &isparam);
3568 if (old && isparam) {
3569 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
3570 "local `%s` is shadowing a parameter", var->name))
3572 parseerror(parser, "local `%s` already declared here: %s:%i",
3573 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3577 if (opts_standard != COMPILER_GMQCC) {
3586 var->isconst = true;
3589 * Create the global/local, and deal with vector types.
3592 if (var->expression.vtype == TYPE_VECTOR)
3594 else if (var->expression.vtype == TYPE_FIELD &&
3595 var->expression.next->expression.vtype == TYPE_VECTOR)
3599 if (!create_vector_members(var, me)) {
3606 /* deal with global variables, fields, functions */
3607 if (!nofields && var->expression.vtype == TYPE_FIELD) {
3608 vec_push(parser->fields, (ast_expression*)var);
3609 util_htset(parser->htfields, var->name, var);
3611 for (i = 0; i < 3; ++i) {
3612 vec_push(parser->fields, (ast_expression*)me[i]);
3613 util_htset(parser->htfields, me[i]->name, me[i]);
3618 vec_push(parser->globals, (ast_expression*)var);
3619 util_htset(parser->htglobals, var->name, var);
3621 for (i = 0; i < 3; ++i) {
3622 vec_push(parser->globals, (ast_expression*)me[i]);
3623 util_htset(parser->htglobals, me[i]->name, me[i]);
3628 vec_push(localblock->locals, var);
3629 parser_addlocal(parser, var->name, (ast_expression*)var);
3631 for (i = 0; i < 3; ++i) {
3632 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
3633 ast_block_collect(localblock, (ast_expression*)me[i]);
3639 me[0] = me[1] = me[2] = NULL;
3644 if (var->expression.vtype == TYPE_ARRAY) {
3646 snprintf(name, sizeof(name), "%s##SET", var->name);
3647 if (!parser_create_array_setter(parser, var, name))
3649 snprintf(name, sizeof(name), "%s##GET", var->name);
3650 if (!parser_create_array_getter(parser, var, var->expression.next, name))
3653 else if (!localblock && !nofields &&
3654 var->expression.vtype == TYPE_FIELD &&
3655 var->expression.next->expression.vtype == TYPE_ARRAY)
3658 ast_expression *telem;
3660 ast_value *array = (ast_value*)var->expression.next;
3662 if (!ast_istype(var->expression.next, ast_value)) {
3663 parseerror(parser, "internal error: field element type must be an ast_value");
3667 snprintf(name, sizeof(name), "%s##SETF", var->name);
3668 if (!parser_create_array_field_setter(parser, array, name))
3671 telem = ast_type_copy(ast_ctx(var), array->expression.next);
3672 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
3673 tfield->expression.next = telem;
3674 snprintf(name, sizeof(name), "%s##GETFP", var->name);
3675 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
3683 if (parser->tok == ';') {
3684 ast_delete(basetype);
3685 if (!parser_next(parser)) {
3686 parseerror(parser, "error after variable declaration");
3692 if (parser->tok == ',')
3695 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
3696 parseerror(parser, "missing comma or semicolon while parsing variables");
3700 if (localblock && opts_standard == COMPILER_QCC) {
3701 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
3702 "initializing expression turns variable `%s` into a constant in this standard",
3709 if (parser->tok != '{') {
3710 if (parser->tok != '=') {
3711 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
3715 if (!parser_next(parser)) {
3716 parseerror(parser, "error parsing initializer");
3720 else if (opts_standard == COMPILER_QCC) {
3721 parseerror(parser, "expected '=' before function body in this standard");
3724 if (parser->tok == '#') {
3725 ast_function *func = NULL;
3728 parseerror(parser, "cannot declare builtins within functions");
3731 if (var->expression.vtype != TYPE_FUNCTION) {
3732 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
3735 if (!parser_next(parser)) {
3736 parseerror(parser, "expected builtin number");
3739 if (parser->tok != TOKEN_INTCONST) {
3740 parseerror(parser, "builtin number must be an integer constant");
3743 if (parser_token(parser)->constval.i <= 0) {
3744 parseerror(parser, "builtin number must be an integer greater than zero");
3749 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
3750 "builtin `%s` has already been defined\n"
3751 " -> previous declaration here: %s:%i",
3752 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
3756 func = ast_function_new(ast_ctx(var), var->name, var);
3758 parseerror(parser, "failed to allocate function for `%s`", var->name);
3761 vec_push(parser->functions, func);
3763 func->builtin = -parser_token(parser)->constval.i;
3766 if (!parser_next(parser)) {
3767 parseerror(parser, "expected comma or semicolon");
3769 ast_function_delete(func);
3770 var->constval.vfunc = NULL;
3774 else if (parser->tok == '{' || parser->tok == '[')
3777 parseerror(parser, "cannot declare functions within functions");
3781 if (!parse_function_body(parser, var))
3783 ast_delete(basetype);
3786 ast_expression *cexp;
3789 cexp = parse_expression_leave(parser, true);
3794 cval = (ast_value*)cexp;
3795 if (!ast_istype(cval, ast_value) || !cval->isconst)
3796 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
3799 var->isconst = true;
3800 if (cval->expression.vtype == TYPE_STRING)
3801 var->constval.vstring = parser_strdup(cval->constval.vstring);
3803 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
3807 shunt sy = { NULL, NULL };
3808 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
3809 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
3810 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
3811 if (!parser_sy_pop(parser, &sy))
3814 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
3815 parseerror(parser, "internal error: leaked operands");
3816 vec_push(localblock->exprs, (ast_expression*)sy.out[0].out);
3824 if (parser->tok == ',') {
3825 if (!parser_next(parser)) {
3826 parseerror(parser, "expected another variable");
3830 if (parser->tok != TOKEN_IDENT) {
3831 parseerror(parser, "expected another variable");
3834 var = ast_value_copy(basetype);
3836 ast_value_set_name(var, parser_tokval(parser));
3837 if (!parser_next(parser)) {
3838 parseerror(parser, "error parsing variable declaration");
3844 if (parser->tok != ';') {
3845 parseerror(parser, "missing semicolon after variables");
3849 if (!parser_next(parser)) {
3850 parseerror(parser, "parse error after variable declaration");
3854 ast_delete(basetype);
3858 if (cleanvar && var)
3860 ast_delete(basetype);
3864 ast_delete(basetype);
3865 if (cleanvar && var)
3867 if (me[0]) ast_member_delete(me[0]);
3868 if (me[1]) ast_member_delete(me[1]);
3869 if (me[2]) ast_member_delete(me[2]);
3873 static bool parser_global_statement(parser_t *parser)
3875 ast_value *istype = NULL;
3876 if (parser->tok == TOKEN_IDENT)
3877 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
3879 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3881 return parse_variable(parser, NULL, false, false, istype);
3883 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "var"))
3885 if (!strcmp(parser_tokval(parser), "var")) {
3886 if (!parser_next(parser)) {
3887 parseerror(parser, "expected variable declaration after 'var'");
3890 return parse_variable(parser, NULL, true, false, NULL);
3893 else if (parser->tok == TOKEN_KEYWORD)
3895 if (!strcmp(parser_tokval(parser), "const")) {
3896 if (!parser_next(parser)) {
3897 parseerror(parser, "expected variable declaration after 'const'");
3900 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "var")) {
3901 (void)!parsewarning(parser, WARN_CONST_VAR, "ignoring `var` after const qualifier");
3902 if (!parser_next(parser)) {
3903 parseerror(parser, "expected variable declaration after 'const var'");
3907 return parse_variable(parser, NULL, true, true, NULL);
3909 else if (!strcmp(parser_tokval(parser), "typedef")) {
3910 if (!parser_next(parser)) {
3911 parseerror(parser, "expected type definition after 'typedef'");
3914 return parse_typedef(parser);
3916 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
3919 else if (parser->tok == '$')
3921 if (!parser_next(parser)) {
3922 parseerror(parser, "parse error");
3928 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
3934 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
3936 return util_crc16(old, str, strlen(str));
3939 static void progdefs_crc_file(const char *str)
3941 /* write to progdefs.h here */
3945 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
3947 old = progdefs_crc_sum(old, str);
3948 progdefs_crc_file(str);
3952 static void generate_checksum(parser_t *parser)
3954 uint16_t crc = 0xFFFF;
3958 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
3959 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
3961 progdefs_crc_file("\tint\tpad;\n");
3962 progdefs_crc_file("\tint\tofs_return[3];\n");
3963 progdefs_crc_file("\tint\tofs_parm0[3];\n");
3964 progdefs_crc_file("\tint\tofs_parm1[3];\n");
3965 progdefs_crc_file("\tint\tofs_parm2[3];\n");
3966 progdefs_crc_file("\tint\tofs_parm3[3];\n");
3967 progdefs_crc_file("\tint\tofs_parm4[3];\n");
3968 progdefs_crc_file("\tint\tofs_parm5[3];\n");
3969 progdefs_crc_file("\tint\tofs_parm6[3];\n");
3970 progdefs_crc_file("\tint\tofs_parm7[3];\n");
3972 for (i = 0; i < parser->crc_globals; ++i) {
3973 if (!ast_istype(parser->globals[i], ast_value))
3975 value = (ast_value*)(parser->globals[i]);
3976 switch (value->expression.vtype) {
3977 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
3978 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
3979 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
3980 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
3982 crc = progdefs_crc_both(crc, "\tint\t");
3985 crc = progdefs_crc_both(crc, value->name);
3986 crc = progdefs_crc_both(crc, ";\n");
3988 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
3989 for (i = 0; i < parser->crc_fields; ++i) {
3990 if (!ast_istype(parser->fields[i], ast_value))
3992 value = (ast_value*)(parser->fields[i]);
3993 switch (value->expression.next->expression.vtype) {
3994 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
3995 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
3996 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
3997 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
3999 crc = progdefs_crc_both(crc, "\tint\t");
4002 crc = progdefs_crc_both(crc, value->name);
4003 crc = progdefs_crc_both(crc, ";\n");
4005 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4010 static parser_t *parser;
4016 parser = (parser_t*)mem_a(sizeof(parser_t));
4020 memset(parser, 0, sizeof(*parser));
4022 for (i = 0; i < operator_count; ++i) {
4023 if (operators[i].id == opid1('=')) {
4024 parser->assign_op = operators+i;
4028 if (!parser->assign_op) {
4029 printf("internal error: initializing parser: failed to find assign operator\n");
4034 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4035 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4036 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4037 vec_push(parser->_blocktypedefs, 0);
4041 bool parser_compile()
4043 /* initial lexer/parser state */
4044 parser->lex->flags.noops = true;
4046 if (parser_next(parser))
4048 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4050 if (!parser_global_statement(parser)) {
4051 if (parser->tok == TOKEN_EOF)
4052 parseerror(parser, "unexpected eof");
4053 else if (!parser->errors)
4054 parseerror(parser, "there have been errors, bailing out");
4055 lex_close(parser->lex);
4061 parseerror(parser, "parse error");
4062 lex_close(parser->lex);
4067 lex_close(parser->lex);
4070 return !parser->errors;
4073 bool parser_compile_file(const char *filename)
4075 parser->lex = lex_open(filename);
4077 con_err("failed to open file \"%s\"\n", filename);
4080 return parser_compile();
4083 bool parser_compile_string_len(const char *name, const char *str, size_t len)
4085 parser->lex = lex_open_string(str, len, name);
4087 con_err("failed to create lexer for string \"%s\"\n", name);
4090 return parser_compile();
4093 bool parser_compile_string(const char *name, const char *str)
4095 parser->lex = lex_open_string(str, strlen(str), name);
4097 con_err("failed to create lexer for string \"%s\"\n", name);
4100 return parser_compile();
4103 void parser_cleanup()
4106 for (i = 0; i < vec_size(parser->accessors); ++i) {
4107 ast_delete(parser->accessors[i]->constval.vfunc);
4108 parser->accessors[i]->constval.vfunc = NULL;
4109 ast_delete(parser->accessors[i]);
4111 for (i = 0; i < vec_size(parser->functions); ++i) {
4112 ast_delete(parser->functions[i]);
4114 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4115 ast_delete(parser->imm_vector[i]);
4117 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4118 ast_delete(parser->imm_string[i]);
4120 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4121 ast_delete(parser->imm_float[i]);
4123 for (i = 0; i < vec_size(parser->fields); ++i) {
4124 ast_delete(parser->fields[i]);
4126 for (i = 0; i < vec_size(parser->globals); ++i) {
4127 ast_delete(parser->globals[i]);
4129 vec_free(parser->accessors);
4130 vec_free(parser->functions);
4131 vec_free(parser->imm_vector);
4132 vec_free(parser->imm_string);
4133 vec_free(parser->imm_float);
4134 vec_free(parser->globals);
4135 vec_free(parser->fields);
4137 for (i = 0; i < vec_size(parser->variables); ++i)
4138 util_htdel(parser->variables[i]);
4139 vec_free(parser->variables);
4140 vec_free(parser->_blocklocals);
4141 vec_free(parser->_locals);
4143 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4144 ast_delete(parser->_typedefs[i]);
4145 vec_free(parser->_typedefs);
4146 for (i = 0; i < vec_size(parser->typedefs); ++i)
4147 util_htdel(parser->typedefs[i]);
4148 vec_free(parser->typedefs);
4149 vec_free(parser->_blocktypedefs);
4154 bool parser_finish(const char *output)
4160 if (!parser->errors)
4162 ir = ir_builder_new("gmqcc_out");
4164 con_out("failed to allocate builder\n");
4168 for (i = 0; i < vec_size(parser->fields); ++i) {
4171 if (!ast_istype(parser->fields[i], ast_value))
4173 field = (ast_value*)parser->fields[i];
4174 isconst = field->isconst;
4175 field->isconst = false;
4176 if (!ast_global_codegen((ast_value*)field, ir, true)) {
4177 con_out("failed to generate field %s\n", field->name);
4178 ir_builder_delete(ir);
4183 ast_expression *subtype;
4184 field->isconst = true;
4185 subtype = field->expression.next;
4186 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
4187 if (subtype->expression.vtype == TYPE_FIELD)
4188 ifld->fieldtype = subtype->expression.next->expression.vtype;
4189 else if (subtype->expression.vtype == TYPE_FUNCTION)
4190 ifld->outtype = subtype->expression.next->expression.vtype;
4191 (void)!ir_value_set_field(field->ir_v, ifld);
4194 for (i = 0; i < vec_size(parser->globals); ++i) {
4196 if (!ast_istype(parser->globals[i], ast_value))
4198 asvalue = (ast_value*)(parser->globals[i]);
4199 if (!asvalue->uses && !asvalue->isconst && asvalue->expression.vtype != TYPE_FUNCTION) {
4200 if (strcmp(asvalue->name, "end_sys_globals") &&
4201 strcmp(asvalue->name, "end_sys_fields"))
4203 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
4204 "unused global: `%s`", asvalue->name);
4207 if (!ast_global_codegen(asvalue, ir, false)) {
4208 con_out("failed to generate global %s\n", asvalue->name);
4209 ir_builder_delete(ir);
4213 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4214 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
4215 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
4216 ir_builder_delete(ir);
4220 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4221 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
4222 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
4223 ir_builder_delete(ir);
4227 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4228 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
4229 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
4230 ir_builder_delete(ir);
4234 for (i = 0; i < vec_size(parser->globals); ++i) {
4236 if (!ast_istype(parser->globals[i], ast_value))
4238 asvalue = (ast_value*)(parser->globals[i]);
4239 if (asvalue->setter) {
4240 if (!ast_global_codegen(asvalue->setter, ir, false) ||
4241 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
4242 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
4244 printf("failed to generate setter for %s\n", asvalue->name);
4245 ir_builder_delete(ir);
4249 if (asvalue->getter) {
4250 if (!ast_global_codegen(asvalue->getter, ir, false) ||
4251 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
4252 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
4254 printf("failed to generate getter for %s\n", asvalue->name);
4255 ir_builder_delete(ir);
4260 for (i = 0; i < vec_size(parser->fields); ++i) {
4262 asvalue = (ast_value*)(parser->fields[i]->expression.next);
4264 if (!ast_istype((ast_expression*)asvalue, ast_value))
4266 if (asvalue->expression.vtype != TYPE_ARRAY)
4268 if (asvalue->setter) {
4269 if (!ast_global_codegen(asvalue->setter, ir, false) ||
4270 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
4271 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
4273 printf("failed to generate setter for %s\n", asvalue->name);
4274 ir_builder_delete(ir);
4278 if (asvalue->getter) {
4279 if (!ast_global_codegen(asvalue->getter, ir, false) ||
4280 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
4281 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
4283 printf("failed to generate getter for %s\n", asvalue->name);
4284 ir_builder_delete(ir);
4289 for (i = 0; i < vec_size(parser->functions); ++i) {
4290 if (!ast_function_codegen(parser->functions[i], ir)) {
4291 con_out("failed to generate function %s\n", parser->functions[i]->name);
4292 ir_builder_delete(ir);
4297 ir_builder_dump(ir, con_out);
4298 for (i = 0; i < vec_size(parser->functions); ++i) {
4299 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4300 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4301 ir_builder_delete(ir);
4308 ir_builder_dump(ir, con_out);
4310 generate_checksum(parser);
4312 if (!ir_builder_generate(ir, output)) {
4313 con_out("*** failed to generate output file\n");
4314 ir_builder_delete(ir);
4319 ir_builder_delete(ir);
4323 con_out("*** there were compile errors\n");