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 (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1308 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1310 /* a translatable string */
1314 parseerror(parser, "expected operator or end of statement, got constant");
1318 parser->lex->flags.noops = true;
1319 if (!parser_next(parser) || parser->tok != '(') {
1320 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1323 parser->lex->flags.noops = false;
1324 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1325 parseerror(parser, "expected a constant string in translatable-string extension");
1328 val = parser_const_string(parser, parser_tokval(parser), true);
1332 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1333 DEBUGSHUNTDO(con_out("push string\n"));
1335 if (!parser_next(parser) || parser->tok != ')') {
1336 parseerror(parser, "expected closing paren after translatable string");
1340 else if (parser->tok == TOKEN_IDENT)
1342 ast_expression *var;
1344 parseerror(parser, "expected operator or end of statement");
1349 if (opts_standard == COMPILER_GMQCC)
1351 if (parser->memberof == TYPE_ENTITY) {
1352 /* still get vars first since there could be a fieldpointer */
1353 var = parser_find_var(parser, parser_tokval(parser));
1355 var = parser_find_field(parser, parser_tokval(parser));
1357 else if (parser->memberof == TYPE_VECTOR)
1359 parseerror(parser, "TODO: implement effective vector member access");
1362 else if (parser->memberof) {
1363 parseerror(parser, "namespace for member not found");
1367 var = parser_find_var(parser, parser_tokval(parser));
1369 var = parser_find_var(parser, parser_tokval(parser));
1371 var = parser_find_field(parser, parser_tokval(parser));
1374 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1377 if (ast_istype(var, ast_value))
1378 ((ast_value*)var)->uses++;
1379 vec_push(sy.out, syexp(parser_ctx(parser), var));
1380 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1382 else if (parser->tok == TOKEN_FLOATCONST) {
1385 parseerror(parser, "expected operator or end of statement, got constant");
1389 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1392 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1393 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1395 else if (parser->tok == TOKEN_INTCONST) {
1398 parseerror(parser, "expected operator or end of statement, got constant");
1402 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1405 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1406 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1408 else if (parser->tok == TOKEN_STRINGCONST) {
1411 parseerror(parser, "expected operator or end of statement, got constant");
1415 val = parser_const_string(parser, parser_tokval(parser), false);
1418 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1419 DEBUGSHUNTDO(con_out("push string\n"));
1421 else if (parser->tok == TOKEN_VECTORCONST) {
1424 parseerror(parser, "expected operator or end of statement, got constant");
1428 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1431 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1432 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1433 parser_token(parser)->constval.v.x,
1434 parser_token(parser)->constval.v.y,
1435 parser_token(parser)->constval.v.z));
1437 else if (parser->tok == '(') {
1438 parseerror(parser, "internal error: '(' should be classified as operator");
1441 else if (parser->tok == '[') {
1442 parseerror(parser, "internal error: '[' should be classified as operator");
1445 else if (parser->tok == ')') {
1447 DEBUGSHUNTDO(con_out("do[op] )\n"));
1451 /* we do expect an operator next */
1452 /* closing an opening paren */
1453 if (!parser_close_paren(parser, &sy, false))
1456 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1460 /* allowed for function calls */
1461 if (!parser_close_paren(parser, &sy, true))
1466 else if (parser->tok == ']') {
1468 parseerror(parser, "operand expected");
1472 if (!parser_close_paren(parser, &sy, false))
1476 else if (parser->tok != TOKEN_OPERATOR) {
1478 parseerror(parser, "expected operator or end of statement");
1485 /* classify the operator */
1486 const oper_info *op;
1487 const oper_info *olast = NULL;
1489 for (o = 0; o < operator_count; ++o) {
1490 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1491 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1492 !strcmp(parser_tokval(parser), operators[o].op))
1497 if (o == operator_count) {
1498 /* no operator found... must be the end of the statement */
1501 /* found an operator */
1504 /* when declaring variables, a comma starts a new variable */
1505 if (op->id == opid1(',') && !parens && stopatcomma) {
1506 /* fixup the token */
1511 /* a colon without a pervious question mark cannot be a ternary */
1512 if (!ternaries && op->id == opid2(':','?')) {
1517 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1518 olast = &operators[vec_last(sy.ops).etype-1];
1521 (op->prec < olast->prec) ||
1522 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1524 if (!parser_sy_pop(parser, &sy))
1526 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1527 olast = &operators[vec_last(sy.ops).etype-1];
1532 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1533 /* for gmqcc standard: open up the namespace of the previous type */
1534 ast_expression *prevex = vec_last(sy.out).out;
1536 parseerror(parser, "unexpected member operator");
1539 if (prevex->expression.vtype == TYPE_ENTITY)
1540 parser->memberof = TYPE_ENTITY;
1541 else if (prevex->expression.vtype == TYPE_VECTOR)
1542 parser->memberof = TYPE_VECTOR;
1544 parseerror(parser, "type error: type has no members");
1550 if (op->id == opid1('(')) {
1552 size_t sycount = vec_size(sy.out);
1553 DEBUGSHUNTDO(con_out("push [op] (\n"));
1555 /* we expected an operator, this is the function-call operator */
1556 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1559 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1560 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1563 } else if (op->id == opid1('[')) {
1565 parseerror(parser, "unexpected array subscript");
1569 /* push both the operator and the paren, this makes life easier */
1570 vec_push(sy.ops, syop(parser_ctx(parser), op));
1571 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1573 } else if (op->id == opid2('?',':')) {
1575 vec_push(sy.ops, syop(parser_ctx(parser), op));
1578 } else if (op->id == opid2(':','?')) {
1579 /* we don't push this operator */
1583 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1584 vec_push(sy.ops, syop(parser_ctx(parser), op));
1585 wantop = !!(op->flags & OP_SUFFIX);
1588 if (!parser_next(parser)) {
1591 if (parser->tok == ';' ||
1592 (!parens && parser->tok == ']'))
1598 while (vec_size(sy.ops)) {
1599 if (!parser_sy_pop(parser, &sy))
1603 parser->lex->flags.noops = true;
1604 if (!vec_size(sy.out)) {
1605 parseerror(parser, "empty expression");
1608 expr = sy.out[0].out;
1611 DEBUGSHUNTDO(con_out("shunt done\n"));
1615 parser->lex->flags.noops = true;
1621 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1623 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1626 if (!parser_next(parser)) {
1633 static void parser_enterblock(parser_t *parser)
1635 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1636 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1637 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1638 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1641 static bool parser_leaveblock(parser_t *parser)
1644 size_t locals, typedefs;
1646 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1647 parseerror(parser, "internal error: parser_leaveblock with no block");
1651 util_htdel(vec_last(parser->variables));
1652 vec_pop(parser->variables);
1653 if (!vec_size(parser->_blocklocals)) {
1654 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1658 locals = vec_last(parser->_blocklocals);
1659 vec_pop(parser->_blocklocals);
1660 while (vec_size(parser->_locals) != locals) {
1661 ast_expression *e = vec_last(parser->_locals);
1662 ast_value *v = (ast_value*)e;
1663 vec_pop(parser->_locals);
1664 if (ast_istype(e, ast_value) && !v->uses) {
1665 if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
1670 typedefs = vec_last(parser->_blocktypedefs);
1671 while (vec_size(parser->_typedefs) != typedefs) {
1672 ast_delete(vec_last(parser->_typedefs));
1673 vec_pop(parser->_typedefs);
1675 util_htdel(vec_last(parser->typedefs));
1676 vec_pop(parser->typedefs);
1681 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1683 vec_push(parser->_locals, e);
1684 util_htset(vec_last(parser->variables), name, (void*)e);
1687 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1690 ast_expression *cond, *ontrue, *onfalse = NULL;
1693 lex_ctx ctx = parser_ctx(parser);
1695 (void)block; /* not touching */
1697 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1698 if (!parser_next(parser)) {
1699 parseerror(parser, "expected condition or 'not'");
1702 if (parser->tok == TOKEN_KEYWORD && !strcmp(parser_tokval(parser), "not")) {
1704 if (!parser_next(parser)) {
1705 parseerror(parser, "expected condition in parenthesis");
1709 if (parser->tok != '(') {
1710 parseerror(parser, "expected 'if' condition in parenthesis");
1713 /* parse into the expression */
1714 if (!parser_next(parser)) {
1715 parseerror(parser, "expected 'if' condition after opening paren");
1718 /* parse the condition */
1719 cond = parse_expression_leave(parser, false);
1723 if (parser->tok != ')') {
1724 parseerror(parser, "expected closing paren after 'if' condition");
1728 /* parse into the 'then' branch */
1729 if (!parser_next(parser)) {
1730 parseerror(parser, "expected statement for on-true branch of 'if'");
1734 ontrue = parse_statement_or_block(parser);
1739 /* check for an else */
1740 if (!strcmp(parser_tokval(parser), "else")) {
1741 /* parse into the 'else' branch */
1742 if (!parser_next(parser)) {
1743 parseerror(parser, "expected on-false branch after 'else'");
1748 onfalse = parse_statement_or_block(parser);
1757 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1759 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1760 *out = (ast_expression*)ifthen;
1764 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1767 ast_expression *cond, *ontrue;
1769 lex_ctx ctx = parser_ctx(parser);
1771 (void)block; /* not touching */
1773 /* skip the 'while' and check for opening paren */
1774 if (!parser_next(parser) || parser->tok != '(') {
1775 parseerror(parser, "expected 'while' condition in parenthesis");
1778 /* parse into the expression */
1779 if (!parser_next(parser)) {
1780 parseerror(parser, "expected 'while' condition after opening paren");
1783 /* parse the condition */
1784 cond = parse_expression_leave(parser, false);
1788 if (parser->tok != ')') {
1789 parseerror(parser, "expected closing paren after 'while' condition");
1793 /* parse into the 'then' branch */
1794 if (!parser_next(parser)) {
1795 parseerror(parser, "expected while-loop body");
1799 ontrue = parse_statement_or_block(parser);
1805 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1806 *out = (ast_expression*)aloop;
1810 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1813 ast_expression *cond, *ontrue;
1815 lex_ctx ctx = parser_ctx(parser);
1817 (void)block; /* not touching */
1819 /* skip the 'do' and get the body */
1820 if (!parser_next(parser)) {
1821 parseerror(parser, "expected loop body");
1824 ontrue = parse_statement_or_block(parser);
1828 /* expect the "while" */
1829 if (parser->tok != TOKEN_KEYWORD ||
1830 strcmp(parser_tokval(parser), "while"))
1832 parseerror(parser, "expected 'while' and condition");
1837 /* skip the 'while' and check for opening paren */
1838 if (!parser_next(parser) || parser->tok != '(') {
1839 parseerror(parser, "expected 'while' condition in parenthesis");
1843 /* parse into the expression */
1844 if (!parser_next(parser)) {
1845 parseerror(parser, "expected 'while' condition after opening paren");
1849 /* parse the condition */
1850 cond = parse_expression_leave(parser, false);
1854 if (parser->tok != ')') {
1855 parseerror(parser, "expected closing paren after 'while' condition");
1861 if (!parser_next(parser) || parser->tok != ';') {
1862 parseerror(parser, "expected semicolon after condition");
1868 if (!parser_next(parser)) {
1869 parseerror(parser, "parse error");
1875 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1876 *out = (ast_expression*)aloop;
1880 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1883 ast_expression *initexpr, *cond, *increment, *ontrue;
1887 lex_ctx ctx = parser_ctx(parser);
1889 parser_enterblock(parser);
1896 /* skip the 'while' and check for opening paren */
1897 if (!parser_next(parser) || parser->tok != '(') {
1898 parseerror(parser, "expected 'for' expressions in parenthesis");
1901 /* parse into the expression */
1902 if (!parser_next(parser)) {
1903 parseerror(parser, "expected 'for' initializer after opening paren");
1908 if (parser->tok == TOKEN_IDENT)
1909 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
1911 if (typevar || parser->tok == TOKEN_TYPENAME) {
1912 if (opts_standard != COMPILER_GMQCC) {
1913 if (parsewarning(parser, WARN_EXTENSIONS,
1914 "current standard does not allow variable declarations in for-loop initializers"))
1918 parseerror(parser, "TODO: assignment of new variables to be non-const");
1920 if (!parse_variable(parser, block, true, false, typevar))
1923 else if (parser->tok != ';')
1925 initexpr = parse_expression_leave(parser, false);
1930 /* move on to condition */
1931 if (parser->tok != ';') {
1932 parseerror(parser, "expected semicolon after for-loop initializer");
1935 if (!parser_next(parser)) {
1936 parseerror(parser, "expected for-loop condition");
1940 /* parse the condition */
1941 if (parser->tok != ';') {
1942 cond = parse_expression_leave(parser, false);
1947 /* move on to incrementor */
1948 if (parser->tok != ';') {
1949 parseerror(parser, "expected semicolon after for-loop initializer");
1952 if (!parser_next(parser)) {
1953 parseerror(parser, "expected for-loop condition");
1957 /* parse the incrementor */
1958 if (parser->tok != ')') {
1959 increment = parse_expression_leave(parser, false);
1962 if (!ast_istype(increment, ast_store) &&
1963 !ast_istype(increment, ast_call) &&
1964 !ast_istype(increment, ast_binstore))
1966 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
1972 if (parser->tok != ')') {
1973 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1976 /* parse into the 'then' branch */
1977 if (!parser_next(parser)) {
1978 parseerror(parser, "expected for-loop body");
1981 ontrue = parse_statement_or_block(parser);
1986 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1987 *out = (ast_expression*)aloop;
1989 if (!parser_leaveblock(parser))
1993 if (initexpr) ast_delete(initexpr);
1994 if (cond) ast_delete(cond);
1995 if (increment) ast_delete(increment);
1996 (void)!parser_leaveblock(parser);
2000 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2002 ast_expression *exp = NULL;
2003 ast_return *ret = NULL;
2004 ast_value *expected = parser->function->vtype;
2006 (void)block; /* not touching */
2008 if (!parser_next(parser)) {
2009 parseerror(parser, "expected return expression");
2013 if (parser->tok != ';') {
2014 exp = parse_expression(parser, false);
2018 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2019 parseerror(parser, "return with invalid expression");
2022 ret = ast_return_new(exp->expression.node.context, exp);
2028 if (!parser_next(parser))
2029 parseerror(parser, "parse error");
2030 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2031 if (opts_standard != COMPILER_GMQCC)
2032 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2034 parseerror(parser, "return without value");
2036 ret = ast_return_new(parser_ctx(parser), NULL);
2038 *out = (ast_expression*)ret;
2042 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2044 lex_ctx ctx = parser_ctx(parser);
2046 (void)block; /* not touching */
2048 if (!parser_next(parser) || parser->tok != ';') {
2049 parseerror(parser, "expected semicolon");
2053 if (!parser_next(parser))
2054 parseerror(parser, "parse error");
2056 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
2060 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2062 ast_expression *operand;
2064 ast_switch *switchnode;
2065 ast_switch_case swcase;
2067 lex_ctx ctx = parser_ctx(parser);
2069 (void)block; /* not touching */
2071 /* parse over the opening paren */
2072 if (!parser_next(parser) || parser->tok != '(') {
2073 parseerror(parser, "expected switch operand in parenthesis");
2077 /* parse into the expression */
2078 if (!parser_next(parser)) {
2079 parseerror(parser, "expected switch operand");
2082 /* parse the operand */
2083 operand = parse_expression_leave(parser, false);
2087 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2088 opval = (ast_value*)operand;
2089 if (!ast_istype(operand, ast_value) || !opval->isconst) {
2090 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2096 switchnode = ast_switch_new(ctx, operand);
2099 if (parser->tok != ')') {
2100 ast_delete(switchnode);
2101 parseerror(parser, "expected closing paren after 'switch' operand");
2105 /* parse over the opening paren */
2106 if (!parser_next(parser) || parser->tok != '{') {
2107 ast_delete(switchnode);
2108 parseerror(parser, "expected list of cases");
2112 if (!parser_next(parser)) {
2113 ast_delete(switchnode);
2114 parseerror(parser, "expected 'case' or 'default'");
2119 while (parser->tok != '}') {
2120 ast_block *caseblock;
2122 if (parser->tok != TOKEN_KEYWORD) {
2123 ast_delete(switchnode);
2124 parseerror(parser, "expected 'case' or 'default'");
2127 if (!strcmp(parser_tokval(parser), "case")) {
2128 if (!parser_next(parser)) {
2129 ast_delete(switchnode);
2130 parseerror(parser, "expected expression for case");
2133 swcase.value = parse_expression_leave(parser, false);
2134 if (!swcase.value) {
2135 ast_delete(switchnode);
2136 parseerror(parser, "expected expression for case");
2140 else if (!strcmp(parser_tokval(parser), "default")) {
2141 swcase.value = NULL;
2142 if (!parser_next(parser)) {
2143 ast_delete(switchnode);
2144 parseerror(parser, "expected colon");
2149 /* Now the colon and body */
2150 if (parser->tok != ':') {
2151 if (swcase.value) ast_unref(swcase.value);
2152 ast_delete(switchnode);
2153 parseerror(parser, "expected colon");
2157 if (!parser_next(parser)) {
2158 if (swcase.value) ast_unref(swcase.value);
2159 ast_delete(switchnode);
2160 parseerror(parser, "expected statements or case");
2163 caseblock = ast_block_new(parser_ctx(parser));
2165 if (swcase.value) ast_unref(swcase.value);
2166 ast_delete(switchnode);
2169 swcase.code = (ast_expression*)caseblock;
2170 vec_push(switchnode->cases, swcase);
2172 ast_expression *expr;
2173 if (parser->tok == '}')
2175 if (parser->tok == TOKEN_KEYWORD) {
2176 if (!strcmp(parser_tokval(parser), "case") ||
2177 !strcmp(parser_tokval(parser), "default"))
2182 if (!parse_statement(parser, caseblock, &expr, true)) {
2183 ast_delete(switchnode);
2188 vec_push(caseblock->exprs, expr);
2193 if (parser->tok != '}') {
2194 ast_delete(switchnode);
2195 parseerror(parser, "expected closing paren of case list");
2198 if (!parser_next(parser)) {
2199 ast_delete(switchnode);
2200 parseerror(parser, "parse error after switch");
2203 *out = (ast_expression*)switchnode;
2207 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2209 ast_value *typevar = NULL;
2210 if (parser->tok == TOKEN_IDENT)
2211 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2213 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2215 /* local variable */
2217 parseerror(parser, "cannot declare a variable from here");
2220 if (opts_standard == COMPILER_QCC) {
2221 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2224 if (!parse_variable(parser, block, false, false, typevar))
2229 else if (parser->tok == TOKEN_KEYWORD)
2231 if (!strcmp(parser_tokval(parser), "local"))
2234 parseerror(parser, "cannot declare a local variable here");
2237 if (!parser_next(parser)) {
2238 parseerror(parser, "expected variable declaration");
2241 if (!parse_variable(parser, block, true, false, NULL))
2246 else if (!strcmp(parser_tokval(parser), "return"))
2248 return parse_return(parser, block, out);
2250 else if (!strcmp(parser_tokval(parser), "if"))
2252 return parse_if(parser, block, out);
2254 else if (!strcmp(parser_tokval(parser), "while"))
2256 return parse_while(parser, block, out);
2258 else if (!strcmp(parser_tokval(parser), "do"))
2260 return parse_dowhile(parser, block, out);
2262 else if (!strcmp(parser_tokval(parser), "for"))
2264 if (opts_standard == COMPILER_QCC) {
2265 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2268 return parse_for(parser, block, out);
2270 else if (!strcmp(parser_tokval(parser), "break"))
2272 return parse_break_continue(parser, block, out, false);
2274 else if (!strcmp(parser_tokval(parser), "continue"))
2276 return parse_break_continue(parser, block, out, true);
2278 else if (!strcmp(parser_tokval(parser), "switch"))
2280 return parse_switch(parser, block, out);
2282 else if (!strcmp(parser_tokval(parser), "case") ||
2283 !strcmp(parser_tokval(parser), "default"))
2286 parseerror(parser, "unexpected 'case' label");
2291 else if (!strcmp(parser_tokval(parser), "typedef"))
2293 if (!parser_next(parser)) {
2294 parseerror(parser, "expected type definition after 'typedef'");
2297 return parse_typedef(parser);
2299 parseerror(parser, "Unexpected keyword");
2302 else if (parser->tok == '{')
2305 inner = parse_block(parser, false);
2308 *out = (ast_expression*)inner;
2313 ast_expression *exp = parse_expression(parser, false);
2317 if (!ast_istype(exp, ast_store) &&
2318 !ast_istype(exp, ast_call) &&
2319 !ast_istype(exp, ast_binstore))
2321 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2328 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn)
2332 parser_enterblock(parser);
2334 if (!parser_next(parser)) { /* skip the '{' */
2335 parseerror(parser, "expected function body");
2339 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2341 ast_expression *expr = NULL;
2342 if (parser->tok == '}')
2345 if (!parse_statement(parser, block, &expr, false)) {
2346 /* parseerror(parser, "parse error"); */
2352 vec_push(block->exprs, expr);
2355 if (parser->tok != '}') {
2358 if (warnreturn && parser->function->vtype->expression.next->expression.vtype != TYPE_VOID)
2360 if (!vec_size(block->exprs) ||
2361 !ast_istype(vec_last(block->exprs), ast_return))
2363 if (parsewarning(parser, WARN_MISSING_RETURN_VALUES, "control reaches end of non-void function")) {
2369 (void)parser_next(parser);
2373 if (!parser_leaveblock(parser))
2375 return retval && !!block;
2378 static ast_block* parse_block(parser_t *parser, bool warnreturn)
2381 block = ast_block_new(parser_ctx(parser));
2384 if (!parse_block_into(parser, block, warnreturn)) {
2385 ast_block_delete(block);
2391 static ast_expression* parse_statement_or_block(parser_t *parser)
2393 ast_expression *expr = NULL;
2394 if (parser->tok == '{')
2395 return (ast_expression*)parse_block(parser, false);
2396 if (!parse_statement(parser, NULL, &expr, false))
2401 static bool create_vector_members(ast_value *var, ast_member **me)
2404 size_t len = strlen(var->name);
2406 for (i = 0; i < 3; ++i) {
2407 char *name = mem_a(len+3);
2408 memcpy(name, var->name, len);
2410 name[len+1] = 'x'+i;
2412 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
2421 do { ast_member_delete(me[--i]); } while(i);
2425 static bool parse_function_body(parser_t *parser, ast_value *var)
2427 ast_block *block = NULL;
2432 ast_expression *framenum = NULL;
2433 ast_expression *nextthink = NULL;
2434 /* None of the following have to be deleted */
2435 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2436 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2437 bool has_frame_think;
2441 has_frame_think = false;
2442 old = parser->function;
2444 if (var->expression.variadic) {
2445 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2446 "variadic function with implementation will not be able to access additional parameters"))
2452 if (parser->tok == '[') {
2453 /* got a frame definition: [ framenum, nextthink ]
2454 * this translates to:
2455 * self.frame = framenum;
2456 * self.nextthink = time + 0.1;
2457 * self.think = nextthink;
2461 fld_think = parser_find_field(parser, "think");
2462 fld_nextthink = parser_find_field(parser, "nextthink");
2463 fld_frame = parser_find_field(parser, "frame");
2464 if (!fld_think || !fld_nextthink || !fld_frame) {
2465 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2466 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2469 gbl_time = parser_find_global(parser, "time");
2470 gbl_self = parser_find_global(parser, "self");
2471 if (!gbl_time || !gbl_self) {
2472 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2473 parseerror(parser, "please declare the following globals: `time`, `self`");
2477 if (!parser_next(parser))
2480 framenum = parse_expression_leave(parser, true);
2482 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2485 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->isconst) {
2486 ast_unref(framenum);
2487 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2491 if (parser->tok != ',') {
2492 ast_unref(framenum);
2493 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2494 parseerror(parser, "Got a %i\n", parser->tok);
2498 if (!parser_next(parser)) {
2499 ast_unref(framenum);
2503 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2505 /* qc allows the use of not-yet-declared functions here
2506 * - this automatically creates a prototype */
2507 ast_value *thinkfunc;
2508 ast_expression *functype = fld_think->expression.next;
2510 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2511 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2512 ast_unref(framenum);
2513 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2517 if (!parser_next(parser)) {
2518 ast_unref(framenum);
2519 ast_delete(thinkfunc);
2523 vec_push(parser->globals, (ast_expression*)thinkfunc);
2524 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
2525 nextthink = (ast_expression*)thinkfunc;
2528 nextthink = parse_expression_leave(parser, true);
2530 ast_unref(framenum);
2531 parseerror(parser, "expected a think-function in [frame,think] notation");
2536 if (!ast_istype(nextthink, ast_value)) {
2537 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2541 if (retval && parser->tok != ']') {
2542 parseerror(parser, "expected closing `]` for [frame,think] notation");
2546 if (retval && !parser_next(parser)) {
2550 if (retval && parser->tok != '{') {
2551 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2556 ast_unref(nextthink);
2557 ast_unref(framenum);
2561 has_frame_think = true;
2564 block = ast_block_new(parser_ctx(parser));
2566 parseerror(parser, "failed to allocate block");
2567 if (has_frame_think) {
2568 ast_unref(nextthink);
2569 ast_unref(framenum);
2574 if (has_frame_think) {
2576 ast_expression *self_frame;
2577 ast_expression *self_nextthink;
2578 ast_expression *self_think;
2579 ast_expression *time_plus_1;
2580 ast_store *store_frame;
2581 ast_store *store_nextthink;
2582 ast_store *store_think;
2584 ctx = parser_ctx(parser);
2585 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2586 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2587 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2589 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2590 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2592 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2593 if (self_frame) ast_delete(self_frame);
2594 if (self_nextthink) ast_delete(self_nextthink);
2595 if (self_think) ast_delete(self_think);
2596 if (time_plus_1) ast_delete(time_plus_1);
2602 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2603 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2604 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2607 ast_delete(self_frame);
2610 if (!store_nextthink) {
2611 ast_delete(self_nextthink);
2615 ast_delete(self_think);
2619 if (store_frame) ast_delete(store_frame);
2620 if (store_nextthink) ast_delete(store_nextthink);
2621 if (store_think) ast_delete(store_think);
2624 vec_push(block->exprs, (ast_expression*)store_frame);
2625 vec_push(block->exprs, (ast_expression*)store_nextthink);
2626 vec_push(block->exprs, (ast_expression*)store_think);
2630 parseerror(parser, "failed to generate code for [frame,think]");
2631 ast_unref(nextthink);
2632 ast_unref(framenum);
2638 parser_enterblock(parser);
2640 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
2642 ast_value *param = var->expression.params[parami];
2645 if (param->expression.vtype != TYPE_VECTOR &&
2646 (param->expression.vtype != TYPE_FIELD ||
2647 param->expression.next->expression.vtype != TYPE_VECTOR))
2652 if (!create_vector_members(param, me)) {
2653 ast_block_delete(block);
2657 for (e = 0; e < 3; ++e) {
2658 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
2659 ast_block_collect(block, (ast_expression*)me[e]);
2663 func = ast_function_new(ast_ctx(var), var->name, var);
2665 parseerror(parser, "failed to allocate function for `%s`", var->name);
2666 ast_block_delete(block);
2669 vec_push(parser->functions, func);
2671 parser->function = func;
2672 if (!parse_block_into(parser, block, true)) {
2673 ast_block_delete(block);
2677 vec_push(func->blocks, block);
2679 parser->function = old;
2680 if (!parser_leaveblock(parser))
2682 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
2683 parseerror(parser, "internal error: local scopes left");
2687 if (parser->tok == ';')
2688 return parser_next(parser);
2689 else if (opts_standard == COMPILER_QCC)
2690 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
2694 vec_pop(parser->functions);
2695 ast_function_delete(func);
2696 var->constval.vfunc = NULL;
2699 (void)!parser_leaveblock(parser);
2700 parser->function = old;
2704 static ast_expression *array_accessor_split(
2709 ast_expression *left,
2710 ast_expression *right
2716 lex_ctx ctx = ast_ctx(array);
2718 if (!left || !right) {
2719 if (left) ast_delete(left);
2720 if (right) ast_delete(right);
2724 cmp = ast_binary_new(ctx, INSTR_LT,
2725 (ast_expression*)index,
2726 (ast_expression*)parser_const_float(parser, middle));
2730 parseerror(parser, "internal error: failed to create comparison for array setter");
2734 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
2736 ast_delete(cmp); /* will delete left and right */
2737 parseerror(parser, "internal error: failed to create conditional jump for array setter");
2741 return (ast_expression*)ifthen;
2744 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
2746 lex_ctx ctx = ast_ctx(array);
2748 if (from+1 == afterend) {
2749 /* set this value */
2752 ast_array_index *subscript;
2754 int assignop = type_store_instr[value->expression.vtype];
2756 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2757 assignop = INSTR_STORE_V;
2759 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2763 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
2765 ast_delete(subscript);
2769 block = ast_block_new(ctx);
2775 vec_push(block->exprs, (ast_expression*)st);
2777 ret = ast_return_new(ctx, NULL);
2783 vec_push(block->exprs, (ast_expression*)ret);
2785 return (ast_expression*)block;
2787 ast_expression *left, *right;
2788 size_t diff = afterend - from;
2789 size_t middle = from + diff/2;
2790 left = array_setter_node(parser, array, index, value, from, middle);
2791 right = array_setter_node(parser, array, index, value, middle, afterend);
2792 return array_accessor_split(parser, array, index, middle, left, right);
2796 static ast_expression *array_field_setter_node(
2805 lex_ctx ctx = ast_ctx(array);
2807 if (from+1 == afterend) {
2808 /* set this value */
2811 ast_entfield *entfield;
2812 ast_array_index *subscript;
2814 int assignop = type_storep_instr[value->expression.vtype];
2816 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2817 assignop = INSTR_STOREP_V;
2819 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2823 entfield = ast_entfield_new_force(ctx,
2824 (ast_expression*)entity,
2825 (ast_expression*)subscript,
2826 (ast_expression*)subscript);
2828 ast_delete(subscript);
2832 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
2834 ast_delete(entfield);
2838 block = ast_block_new(ctx);
2844 vec_push(block->exprs, (ast_expression*)st);
2846 ret = ast_return_new(ctx, NULL);
2852 vec_push(block->exprs, (ast_expression*)ret);
2854 return (ast_expression*)block;
2856 ast_expression *left, *right;
2857 size_t diff = afterend - from;
2858 size_t middle = from + diff/2;
2859 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
2860 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
2861 return array_accessor_split(parser, array, index, middle, left, right);
2865 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
2867 lex_ctx ctx = ast_ctx(array);
2869 if (from+1 == afterend) {
2871 ast_array_index *subscript;
2873 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2877 ret = ast_return_new(ctx, (ast_expression*)subscript);
2879 ast_delete(subscript);
2883 return (ast_expression*)ret;
2885 ast_expression *left, *right;
2886 size_t diff = afterend - from;
2887 size_t middle = from + diff/2;
2888 left = array_getter_node(parser, array, index, from, middle);
2889 right = array_getter_node(parser, array, index, middle, afterend);
2890 return array_accessor_split(parser, array, index, middle, left, right);
2894 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
2896 ast_function *func = NULL;
2897 ast_value *fval = NULL;
2898 ast_block *body = NULL;
2900 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
2902 parseerror(parser, "failed to create accessor function value");
2906 func = ast_function_new(ast_ctx(array), funcname, fval);
2909 parseerror(parser, "failed to create accessor function node");
2913 body = ast_block_new(ast_ctx(array));
2915 parseerror(parser, "failed to create block for array accessor");
2921 vec_push(func->blocks, body);
2924 vec_push(parser->accessors, fval);
2929 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
2931 ast_expression *root = NULL;
2932 ast_value *index = NULL;
2933 ast_value *value = NULL;
2937 if (!ast_istype(array->expression.next, ast_value)) {
2938 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2942 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2944 func = fval->constval.vfunc;
2945 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2947 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2948 value = ast_value_copy((ast_value*)array->expression.next);
2950 if (!index || !value) {
2951 parseerror(parser, "failed to create locals for array accessor");
2954 (void)!ast_value_set_name(value, "value"); /* not important */
2955 vec_push(fval->expression.params, index);
2956 vec_push(fval->expression.params, value);
2958 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
2960 parseerror(parser, "failed to build accessor search tree");
2964 vec_push(func->blocks[0]->exprs, root);
2965 array->setter = fval;
2968 if (index) ast_delete(index);
2969 if (value) ast_delete(value);
2970 if (root) ast_delete(root);
2976 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
2978 ast_expression *root = NULL;
2979 ast_value *entity = NULL;
2980 ast_value *index = NULL;
2981 ast_value *value = NULL;
2985 if (!ast_istype(array->expression.next, ast_value)) {
2986 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2990 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2992 func = fval->constval.vfunc;
2993 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2995 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
2996 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2997 value = ast_value_copy((ast_value*)array->expression.next);
2998 if (!entity || !index || !value) {
2999 parseerror(parser, "failed to create locals for array accessor");
3002 (void)!ast_value_set_name(value, "value"); /* not important */
3003 vec_push(fval->expression.params, entity);
3004 vec_push(fval->expression.params, index);
3005 vec_push(fval->expression.params, value);
3007 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3009 parseerror(parser, "failed to build accessor search tree");
3013 vec_push(func->blocks[0]->exprs, root);
3014 array->setter = fval;
3017 if (entity) ast_delete(entity);
3018 if (index) ast_delete(index);
3019 if (value) ast_delete(value);
3020 if (root) ast_delete(root);
3026 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3028 ast_expression *root = NULL;
3029 ast_value *index = NULL;
3033 /* NOTE: checking array->expression.next rather than elemtype since
3034 * for fields elemtype is a temporary fieldtype.
3036 if (!ast_istype(array->expression.next, ast_value)) {
3037 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3041 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3043 func = fval->constval.vfunc;
3044 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3046 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3049 parseerror(parser, "failed to create locals for array accessor");
3052 vec_push(fval->expression.params, index);
3054 root = array_getter_node(parser, array, index, 0, array->expression.count);
3056 parseerror(parser, "failed to build accessor search tree");
3060 vec_push(func->blocks[0]->exprs, root);
3061 array->getter = fval;
3064 if (index) ast_delete(index);
3065 if (root) ast_delete(root);
3071 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3072 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3080 bool variadic = false;
3082 ctx = parser_ctx(parser);
3084 /* for the sake of less code we parse-in in this function */
3085 if (!parser_next(parser)) {
3086 parseerror(parser, "expected parameter list");
3092 /* parse variables until we hit a closing paren */
3093 while (parser->tok != ')') {
3095 /* there must be commas between them */
3096 if (parser->tok != ',') {
3097 parseerror(parser, "expected comma or end of parameter list");
3100 if (!parser_next(parser)) {
3101 parseerror(parser, "expected parameter");
3107 if (parser->tok == TOKEN_DOTS) {
3108 /* '...' indicates a varargs function */
3110 if (!parser_next(parser)) {
3111 parseerror(parser, "expected parameter");
3114 if (parser->tok != ')') {
3115 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3121 /* for anything else just parse a typename */
3122 param = parse_typename(parser, NULL, NULL);
3125 vec_push(params, param);
3126 if (param->expression.vtype >= TYPE_VARIANT) {
3127 char typename[1024];
3128 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
3129 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
3136 if (vec_size(params) > 8 && opts_standard == COMPILER_QCC)
3137 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3140 if (!parser_next(parser)) {
3141 parseerror(parser, "parse error after typename");
3145 /* now turn 'var' into a function type */
3146 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3147 fval->expression.next = (ast_expression*)var;
3148 fval->expression.variadic = variadic;
3151 var->expression.params = params;
3158 for (i = 0; i < vec_size(params); ++i)
3159 ast_delete(params[i]);
3164 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3166 ast_expression *cexp;
3167 ast_value *cval, *tmp;
3170 ctx = parser_ctx(parser);
3172 if (!parser_next(parser)) {
3174 parseerror(parser, "expected array-size");
3178 cexp = parse_expression_leave(parser, true);
3180 if (!cexp || !ast_istype(cexp, ast_value)) {
3184 parseerror(parser, "expected array-size as constant positive integer");
3187 cval = (ast_value*)cexp;
3189 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3190 tmp->expression.next = (ast_expression*)var;
3193 if (cval->expression.vtype == TYPE_INTEGER)
3194 tmp->expression.count = cval->constval.vint;
3195 else if (cval->expression.vtype == TYPE_FLOAT)
3196 tmp->expression.count = cval->constval.vfloat;
3200 parseerror(parser, "array-size must be a positive integer constant");
3205 if (parser->tok != ']') {
3207 parseerror(parser, "expected ']' after array-size");
3210 if (!parser_next(parser)) {
3212 parseerror(parser, "error after parsing array size");
3218 /* Parse a complete typename.
3219 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3220 * but when parsing variables separated by comma
3221 * 'storebase' should point to where the base-type should be kept.
3222 * The base type makes up every bit of type information which comes *before* the
3225 * The following will be parsed in its entirety:
3227 * The 'basetype' in this case is 'void()'
3228 * and if there's a comma after it, say:
3230 * then the type-information 'void()' can be stored in 'storebase'
3232 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3234 ast_value *var, *tmp;
3237 const char *name = NULL;
3238 bool isfield = false;
3239 bool wasarray = false;
3240 size_t morefields = 0;
3242 ctx = parser_ctx(parser);
3244 /* types may start with a dot */
3245 if (parser->tok == '.') {
3247 /* if we parsed a dot we need a typename now */
3248 if (!parser_next(parser)) {
3249 parseerror(parser, "expected typename for field definition");
3253 /* Further dots are handled seperately because they won't be part of the
3256 while (parser->tok == '.') {
3258 if (!parser_next(parser)) {
3259 parseerror(parser, "expected typename for field definition");
3264 if (parser->tok == TOKEN_IDENT)
3265 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
3266 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
3267 parseerror(parser, "expected typename");
3272 /* generate the basic type value */
3273 if (cached_typedef) {
3274 var = ast_value_copy(cached_typedef);
3275 ast_value_set_name(var, "<type(from_def)>");
3277 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3279 for (; morefields; --morefields) {
3280 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
3281 tmp->expression.next = (ast_expression*)var;
3285 /* do not yet turn into a field - remember:
3286 * .void() foo; is a field too
3287 * .void()() foo; is a function
3291 if (!parser_next(parser)) {
3293 parseerror(parser, "parse error after typename");
3297 /* an opening paren now starts the parameter-list of a function
3298 * this is where original-QC has parameter lists.
3299 * We allow a single parameter list here.
3300 * Much like fteqcc we don't allow `float()() x`
3302 if (parser->tok == '(') {
3303 var = parse_parameter_list(parser, var);
3308 /* store the base if requested */
3310 *storebase = ast_value_copy(var);
3312 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3313 tmp->expression.next = (ast_expression*)*storebase;
3318 /* there may be a name now */
3319 if (parser->tok == TOKEN_IDENT) {
3320 name = util_strdup(parser_tokval(parser));
3322 if (!parser_next(parser)) {
3324 parseerror(parser, "error after variable or field declaration");
3329 /* now this may be an array */
3330 if (parser->tok == '[') {
3332 var = parse_arraysize(parser, var);
3337 /* This is the point where we can turn it into a field */
3339 /* turn it into a field if desired */
3340 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3341 tmp->expression.next = (ast_expression*)var;
3345 /* now there may be function parens again */
3346 if (parser->tok == '(' && opts_standard == COMPILER_QCC)
3347 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3348 if (parser->tok == '(' && wasarray)
3349 parseerror(parser, "arrays as part of a return type is not supported");
3350 while (parser->tok == '(') {
3351 var = parse_parameter_list(parser, var);
3360 /* finally name it */
3362 if (!ast_value_set_name(var, name)) {
3364 parseerror(parser, "internal error: failed to set name");
3367 /* free the name, ast_value_set_name duplicates */
3374 static bool parse_typedef(parser_t *parser)
3376 ast_value *typevar, *oldtype;
3377 ast_expression *old;
3379 typevar = parse_typename(parser, NULL, NULL);
3384 if ( (old = parser_find_var(parser, typevar->name)) ) {
3385 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
3386 " -> `%s` has been declared here: %s:%i",
3387 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
3388 ast_delete(typevar);
3392 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
3393 parseerror(parser, "type `%s` has already been declared here: %s:%i",
3394 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
3395 ast_delete(typevar);
3399 vec_push(parser->_typedefs, typevar);
3400 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
3402 if (parser->tok != ';') {
3403 parseerror(parser, "expected semicolon after typedef");
3406 if (!parser_next(parser)) {
3407 parseerror(parser, "parse error after typedef");
3414 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, bool is_const, ast_value *cached_typedef)
3418 ast_expression *old;
3422 ast_value *basetype = NULL;
3424 bool isparam = false;
3425 bool isvector = false;
3426 bool cleanvar = true;
3427 bool wasarray = false;
3431 /* get the first complete variable */
3432 var = parse_typename(parser, &basetype, cached_typedef);
3435 ast_delete(basetype);
3443 /* Part 0: finish the type */
3444 if (parser->tok == '(') {
3445 if (opts_standard == COMPILER_QCC)
3446 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3447 var = parse_parameter_list(parser, var);
3453 /* we only allow 1-dimensional arrays */
3454 if (parser->tok == '[') {
3456 var = parse_arraysize(parser, var);
3462 if (parser->tok == '(' && wasarray) {
3463 parseerror(parser, "arrays as part of a return type is not supported");
3464 /* we'll still parse the type completely for now */
3466 /* for functions returning functions */
3467 while (parser->tok == '(') {
3468 if (opts_standard == COMPILER_QCC)
3469 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3470 var = parse_parameter_list(parser, var);
3478 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3479 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3480 * is then filled with the previous definition and the parameter-names replaced.
3483 /* Deal with end_sys_ vars */
3485 if (!strcmp(var->name, "end_sys_globals")) {
3486 parser->crc_globals = vec_size(parser->globals);
3489 else if (!strcmp(var->name, "end_sys_fields")) {
3490 parser->crc_fields = vec_size(parser->fields);
3493 if (was_end && var->expression.vtype == TYPE_FIELD) {
3494 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3495 "global '%s' hint should not be a field",
3496 parser_tokval(parser)))
3503 if (!nofields && var->expression.vtype == TYPE_FIELD)
3505 /* deal with field declarations */
3506 old = parser_find_field(parser, var->name);
3508 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3509 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3518 parseerror(parser, "field `%s` already declared here: %s:%i",
3519 var->name, ast_ctx(old).file, ast_ctx(old).line);
3524 if (opts_standard == COMPILER_QCC &&
3525 (old = parser_find_global(parser, var->name)))
3527 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3528 parseerror(parser, "field `%s` already declared here: %s:%i",
3529 var->name, ast_ctx(old).file, ast_ctx(old).line);
3536 /* deal with other globals */
3537 old = parser_find_global(parser, var->name);
3538 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3540 /* This is a function which had a prototype */
3541 if (!ast_istype(old, ast_value)) {
3542 parseerror(parser, "internal error: prototype is not an ast_value");
3546 proto = (ast_value*)old;
3547 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3548 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3550 ast_ctx(proto).file, ast_ctx(proto).line);
3554 /* we need the new parameter-names */
3555 for (i = 0; i < vec_size(proto->expression.params); ++i)
3556 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
3564 if (opts_standard == COMPILER_GMQCC) {
3565 parseerror(parser, "global `%s` already declared here: %s:%i",
3566 var->name, ast_ctx(old).file, ast_ctx(old).line);
3570 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
3571 "global `%s` already declared here: %s:%i",
3572 var->name, ast_ctx(old).file, ast_ctx(old).line))
3579 if (opts_standard == COMPILER_QCC &&
3580 (old = parser_find_field(parser, var->name)))
3582 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3583 parseerror(parser, "global `%s` already declared here: %s:%i",
3584 var->name, ast_ctx(old).file, ast_ctx(old).line);
3591 else /* it's not a global */
3593 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
3594 if (old && !isparam) {
3595 parseerror(parser, "local `%s` already declared here: %s:%i",
3596 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3600 old = parser_find_local(parser, var->name, 0, &isparam);
3601 if (old && isparam) {
3602 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
3603 "local `%s` is shadowing a parameter", var->name))
3605 parseerror(parser, "local `%s` already declared here: %s:%i",
3606 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3610 if (opts_standard != COMPILER_GMQCC) {
3619 var->isconst = true;
3622 * Create the global/local, and deal with vector types.
3625 if (var->expression.vtype == TYPE_VECTOR)
3627 else if (var->expression.vtype == TYPE_FIELD &&
3628 var->expression.next->expression.vtype == TYPE_VECTOR)
3632 if (!create_vector_members(var, me)) {
3639 /* deal with global variables, fields, functions */
3640 if (!nofields && var->expression.vtype == TYPE_FIELD) {
3641 vec_push(parser->fields, (ast_expression*)var);
3642 util_htset(parser->htfields, var->name, var);
3644 for (i = 0; i < 3; ++i) {
3645 vec_push(parser->fields, (ast_expression*)me[i]);
3646 util_htset(parser->htfields, me[i]->name, me[i]);
3651 vec_push(parser->globals, (ast_expression*)var);
3652 util_htset(parser->htglobals, var->name, var);
3654 for (i = 0; i < 3; ++i) {
3655 vec_push(parser->globals, (ast_expression*)me[i]);
3656 util_htset(parser->htglobals, me[i]->name, me[i]);
3661 vec_push(localblock->locals, var);
3662 parser_addlocal(parser, var->name, (ast_expression*)var);
3664 for (i = 0; i < 3; ++i) {
3665 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
3666 ast_block_collect(localblock, (ast_expression*)me[i]);
3672 me[0] = me[1] = me[2] = NULL;
3677 if (var->expression.vtype == TYPE_ARRAY) {
3679 snprintf(name, sizeof(name), "%s##SET", var->name);
3680 if (!parser_create_array_setter(parser, var, name))
3682 snprintf(name, sizeof(name), "%s##GET", var->name);
3683 if (!parser_create_array_getter(parser, var, var->expression.next, name))
3686 else if (!localblock && !nofields &&
3687 var->expression.vtype == TYPE_FIELD &&
3688 var->expression.next->expression.vtype == TYPE_ARRAY)
3691 ast_expression *telem;
3693 ast_value *array = (ast_value*)var->expression.next;
3695 if (!ast_istype(var->expression.next, ast_value)) {
3696 parseerror(parser, "internal error: field element type must be an ast_value");
3700 snprintf(name, sizeof(name), "%s##SETF", var->name);
3701 if (!parser_create_array_field_setter(parser, array, name))
3704 telem = ast_type_copy(ast_ctx(var), array->expression.next);
3705 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
3706 tfield->expression.next = telem;
3707 snprintf(name, sizeof(name), "%s##GETFP", var->name);
3708 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
3716 if (parser->tok == ';') {
3717 ast_delete(basetype);
3718 if (!parser_next(parser)) {
3719 parseerror(parser, "error after variable declaration");
3725 if (parser->tok == ',')
3728 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
3729 parseerror(parser, "missing comma or semicolon while parsing variables");
3733 if (localblock && opts_standard == COMPILER_QCC) {
3734 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
3735 "initializing expression turns variable `%s` into a constant in this standard",
3742 if (parser->tok != '{') {
3743 if (parser->tok != '=') {
3744 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
3748 if (!parser_next(parser)) {
3749 parseerror(parser, "error parsing initializer");
3753 else if (opts_standard == COMPILER_QCC) {
3754 parseerror(parser, "expected '=' before function body in this standard");
3757 if (parser->tok == '#') {
3758 ast_function *func = NULL;
3761 parseerror(parser, "cannot declare builtins within functions");
3764 if (var->expression.vtype != TYPE_FUNCTION) {
3765 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
3768 if (!parser_next(parser)) {
3769 parseerror(parser, "expected builtin number");
3772 if (parser->tok != TOKEN_INTCONST) {
3773 parseerror(parser, "builtin number must be an integer constant");
3776 if (parser_token(parser)->constval.i <= 0) {
3777 parseerror(parser, "builtin number must be an integer greater than zero");
3782 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
3783 "builtin `%s` has already been defined\n"
3784 " -> previous declaration here: %s:%i",
3785 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
3789 func = ast_function_new(ast_ctx(var), var->name, var);
3791 parseerror(parser, "failed to allocate function for `%s`", var->name);
3794 vec_push(parser->functions, func);
3796 func->builtin = -parser_token(parser)->constval.i;
3799 if (!parser_next(parser)) {
3800 parseerror(parser, "expected comma or semicolon");
3802 ast_function_delete(func);
3803 var->constval.vfunc = NULL;
3807 else if (parser->tok == '{' || parser->tok == '[')
3810 parseerror(parser, "cannot declare functions within functions");
3814 if (!parse_function_body(parser, var))
3816 ast_delete(basetype);
3819 ast_expression *cexp;
3822 cexp = parse_expression_leave(parser, true);
3827 cval = (ast_value*)cexp;
3828 if (!ast_istype(cval, ast_value) || !cval->isconst)
3829 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
3832 var->isconst = true;
3833 if (cval->expression.vtype == TYPE_STRING)
3834 var->constval.vstring = parser_strdup(cval->constval.vstring);
3836 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
3840 shunt sy = { NULL, NULL };
3841 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
3842 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
3843 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
3844 if (!parser_sy_pop(parser, &sy))
3847 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
3848 parseerror(parser, "internal error: leaked operands");
3849 vec_push(localblock->exprs, (ast_expression*)sy.out[0].out);
3857 if (parser->tok == ',') {
3858 if (!parser_next(parser)) {
3859 parseerror(parser, "expected another variable");
3863 if (parser->tok != TOKEN_IDENT) {
3864 parseerror(parser, "expected another variable");
3867 var = ast_value_copy(basetype);
3869 ast_value_set_name(var, parser_tokval(parser));
3870 if (!parser_next(parser)) {
3871 parseerror(parser, "error parsing variable declaration");
3877 if (parser->tok != ';') {
3878 parseerror(parser, "missing semicolon after variables");
3882 if (!parser_next(parser)) {
3883 parseerror(parser, "parse error after variable declaration");
3887 ast_delete(basetype);
3891 if (cleanvar && var)
3893 ast_delete(basetype);
3897 ast_delete(basetype);
3898 if (cleanvar && var)
3900 if (me[0]) ast_member_delete(me[0]);
3901 if (me[1]) ast_member_delete(me[1]);
3902 if (me[2]) ast_member_delete(me[2]);
3906 static bool parser_global_statement(parser_t *parser)
3908 ast_value *istype = NULL;
3909 if (parser->tok == TOKEN_IDENT)
3910 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
3912 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3914 return parse_variable(parser, NULL, false, false, istype);
3916 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "var"))
3918 if (!strcmp(parser_tokval(parser), "var")) {
3919 if (!parser_next(parser)) {
3920 parseerror(parser, "expected variable declaration after 'var'");
3923 return parse_variable(parser, NULL, true, false, NULL);
3926 else if (parser->tok == TOKEN_KEYWORD)
3928 if (!strcmp(parser_tokval(parser), "const")) {
3929 if (!parser_next(parser)) {
3930 parseerror(parser, "expected variable declaration after 'const'");
3933 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "var")) {
3934 (void)!parsewarning(parser, WARN_CONST_VAR, "ignoring `var` after const qualifier");
3935 if (!parser_next(parser)) {
3936 parseerror(parser, "expected variable declaration after 'const var'");
3940 return parse_variable(parser, NULL, true, true, NULL);
3942 else if (!strcmp(parser_tokval(parser), "typedef")) {
3943 if (!parser_next(parser)) {
3944 parseerror(parser, "expected type definition after 'typedef'");
3947 return parse_typedef(parser);
3949 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
3952 else if (parser->tok == '$')
3954 if (!parser_next(parser)) {
3955 parseerror(parser, "parse error");
3961 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
3967 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
3969 return util_crc16(old, str, strlen(str));
3972 static void progdefs_crc_file(const char *str)
3974 /* write to progdefs.h here */
3978 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
3980 old = progdefs_crc_sum(old, str);
3981 progdefs_crc_file(str);
3985 static void generate_checksum(parser_t *parser)
3987 uint16_t crc = 0xFFFF;
3991 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
3992 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
3994 progdefs_crc_file("\tint\tpad;\n");
3995 progdefs_crc_file("\tint\tofs_return[3];\n");
3996 progdefs_crc_file("\tint\tofs_parm0[3];\n");
3997 progdefs_crc_file("\tint\tofs_parm1[3];\n");
3998 progdefs_crc_file("\tint\tofs_parm2[3];\n");
3999 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4000 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4001 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4002 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4003 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4005 for (i = 0; i < parser->crc_globals; ++i) {
4006 if (!ast_istype(parser->globals[i], ast_value))
4008 value = (ast_value*)(parser->globals[i]);
4009 switch (value->expression.vtype) {
4010 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4011 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4012 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4013 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4015 crc = progdefs_crc_both(crc, "\tint\t");
4018 crc = progdefs_crc_both(crc, value->name);
4019 crc = progdefs_crc_both(crc, ";\n");
4021 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4022 for (i = 0; i < parser->crc_fields; ++i) {
4023 if (!ast_istype(parser->fields[i], ast_value))
4025 value = (ast_value*)(parser->fields[i]);
4026 switch (value->expression.next->expression.vtype) {
4027 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4028 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4029 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4030 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4032 crc = progdefs_crc_both(crc, "\tint\t");
4035 crc = progdefs_crc_both(crc, value->name);
4036 crc = progdefs_crc_both(crc, ";\n");
4038 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4043 static parser_t *parser;
4049 parser = (parser_t*)mem_a(sizeof(parser_t));
4053 memset(parser, 0, sizeof(*parser));
4055 for (i = 0; i < operator_count; ++i) {
4056 if (operators[i].id == opid1('=')) {
4057 parser->assign_op = operators+i;
4061 if (!parser->assign_op) {
4062 printf("internal error: initializing parser: failed to find assign operator\n");
4067 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4068 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4069 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4070 vec_push(parser->_blocktypedefs, 0);
4074 bool parser_compile()
4076 /* initial lexer/parser state */
4077 parser->lex->flags.noops = true;
4079 if (parser_next(parser))
4081 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4083 if (!parser_global_statement(parser)) {
4084 if (parser->tok == TOKEN_EOF)
4085 parseerror(parser, "unexpected eof");
4086 else if (!parser->errors)
4087 parseerror(parser, "there have been errors, bailing out");
4088 lex_close(parser->lex);
4094 parseerror(parser, "parse error");
4095 lex_close(parser->lex);
4100 lex_close(parser->lex);
4103 return !parser->errors;
4106 bool parser_compile_file(const char *filename)
4108 parser->lex = lex_open(filename);
4110 con_err("failed to open file \"%s\"\n", filename);
4113 return parser_compile();
4116 bool parser_compile_string_len(const char *name, const char *str, size_t len)
4118 parser->lex = lex_open_string(str, len, name);
4120 con_err("failed to create lexer for string \"%s\"\n", name);
4123 return parser_compile();
4126 bool parser_compile_string(const char *name, const char *str)
4128 parser->lex = lex_open_string(str, strlen(str), name);
4130 con_err("failed to create lexer for string \"%s\"\n", name);
4133 return parser_compile();
4136 void parser_cleanup()
4139 for (i = 0; i < vec_size(parser->accessors); ++i) {
4140 ast_delete(parser->accessors[i]->constval.vfunc);
4141 parser->accessors[i]->constval.vfunc = NULL;
4142 ast_delete(parser->accessors[i]);
4144 for (i = 0; i < vec_size(parser->functions); ++i) {
4145 ast_delete(parser->functions[i]);
4147 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4148 ast_delete(parser->imm_vector[i]);
4150 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4151 ast_delete(parser->imm_string[i]);
4153 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4154 ast_delete(parser->imm_float[i]);
4156 for (i = 0; i < vec_size(parser->fields); ++i) {
4157 ast_delete(parser->fields[i]);
4159 for (i = 0; i < vec_size(parser->globals); ++i) {
4160 ast_delete(parser->globals[i]);
4162 vec_free(parser->accessors);
4163 vec_free(parser->functions);
4164 vec_free(parser->imm_vector);
4165 vec_free(parser->imm_string);
4166 vec_free(parser->imm_float);
4167 vec_free(parser->globals);
4168 vec_free(parser->fields);
4170 for (i = 0; i < vec_size(parser->variables); ++i)
4171 util_htdel(parser->variables[i]);
4172 vec_free(parser->variables);
4173 vec_free(parser->_blocklocals);
4174 vec_free(parser->_locals);
4176 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4177 ast_delete(parser->_typedefs[i]);
4178 vec_free(parser->_typedefs);
4179 for (i = 0; i < vec_size(parser->typedefs); ++i)
4180 util_htdel(parser->typedefs[i]);
4181 vec_free(parser->typedefs);
4182 vec_free(parser->_blocktypedefs);
4187 bool parser_finish(const char *output)
4193 if (!parser->errors)
4195 ir = ir_builder_new("gmqcc_out");
4197 con_out("failed to allocate builder\n");
4201 for (i = 0; i < vec_size(parser->fields); ++i) {
4204 if (!ast_istype(parser->fields[i], ast_value))
4206 field = (ast_value*)parser->fields[i];
4207 isconst = field->isconst;
4208 field->isconst = false;
4209 if (!ast_global_codegen((ast_value*)field, ir, true)) {
4210 con_out("failed to generate field %s\n", field->name);
4211 ir_builder_delete(ir);
4216 ast_expression *subtype;
4217 field->isconst = true;
4218 subtype = field->expression.next;
4219 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
4220 if (subtype->expression.vtype == TYPE_FIELD)
4221 ifld->fieldtype = subtype->expression.next->expression.vtype;
4222 else if (subtype->expression.vtype == TYPE_FUNCTION)
4223 ifld->outtype = subtype->expression.next->expression.vtype;
4224 (void)!ir_value_set_field(field->ir_v, ifld);
4227 for (i = 0; i < vec_size(parser->globals); ++i) {
4229 if (!ast_istype(parser->globals[i], ast_value))
4231 asvalue = (ast_value*)(parser->globals[i]);
4232 if (!asvalue->uses && !asvalue->isconst && asvalue->expression.vtype != TYPE_FUNCTION) {
4233 if (strcmp(asvalue->name, "end_sys_globals") &&
4234 strcmp(asvalue->name, "end_sys_fields"))
4236 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
4237 "unused global: `%s`", asvalue->name);
4240 if (!ast_global_codegen(asvalue, ir, false)) {
4241 con_out("failed to generate global %s\n", asvalue->name);
4242 ir_builder_delete(ir);
4246 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4247 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
4248 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
4249 ir_builder_delete(ir);
4253 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4254 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
4255 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
4256 ir_builder_delete(ir);
4260 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4261 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
4262 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
4263 ir_builder_delete(ir);
4267 for (i = 0; i < vec_size(parser->globals); ++i) {
4269 if (!ast_istype(parser->globals[i], ast_value))
4271 asvalue = (ast_value*)(parser->globals[i]);
4272 if (asvalue->setter) {
4273 if (!ast_global_codegen(asvalue->setter, ir, false) ||
4274 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
4275 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
4277 printf("failed to generate setter for %s\n", asvalue->name);
4278 ir_builder_delete(ir);
4282 if (asvalue->getter) {
4283 if (!ast_global_codegen(asvalue->getter, ir, false) ||
4284 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
4285 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
4287 printf("failed to generate getter for %s\n", asvalue->name);
4288 ir_builder_delete(ir);
4293 for (i = 0; i < vec_size(parser->fields); ++i) {
4295 asvalue = (ast_value*)(parser->fields[i]->expression.next);
4297 if (!ast_istype((ast_expression*)asvalue, ast_value))
4299 if (asvalue->expression.vtype != TYPE_ARRAY)
4301 if (asvalue->setter) {
4302 if (!ast_global_codegen(asvalue->setter, ir, false) ||
4303 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
4304 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
4306 printf("failed to generate setter for %s\n", asvalue->name);
4307 ir_builder_delete(ir);
4311 if (asvalue->getter) {
4312 if (!ast_global_codegen(asvalue->getter, ir, false) ||
4313 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
4314 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
4316 printf("failed to generate getter for %s\n", asvalue->name);
4317 ir_builder_delete(ir);
4322 for (i = 0; i < vec_size(parser->functions); ++i) {
4323 if (!ast_function_codegen(parser->functions[i], ir)) {
4324 con_out("failed to generate function %s\n", parser->functions[i]->name);
4325 ir_builder_delete(ir);
4330 ir_builder_dump(ir, con_out);
4331 for (i = 0; i < vec_size(parser->functions); ++i) {
4332 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4333 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4334 ir_builder_delete(ir);
4341 ir_builder_dump(ir, con_out);
4343 generate_checksum(parser);
4345 if (!ir_builder_generate(ir, output)) {
4346 con_out("*** failed to generate output file\n");
4347 ir_builder_delete(ir);
4352 ir_builder_delete(ir);
4356 con_out("*** there were compile errors\n");