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
10 * so, subject to the following conditions:
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);
214 out->constant = true;
215 out->hasvalue = true;
216 out->constval.vfloat = d;
217 vec_push(parser->imm_float, out);
221 static ast_value* parser_const_float_0(parser_t *parser)
223 if (!parser->imm_float_zero)
224 parser->imm_float_zero = parser_const_float(parser, 0);
225 return parser->imm_float_zero;
228 static ast_value* parser_const_float_1(parser_t *parser)
230 if (!parser->imm_float_one)
231 parser->imm_float_one = parser_const_float(parser, 1);
232 return parser->imm_float_one;
235 static char *parser_strdup(const char *str)
238 /* actually dup empty strings */
239 char *out = mem_a(1);
243 return util_strdup(str);
246 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
250 for (i = 0; i < vec_size(parser->imm_string); ++i) {
251 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
252 return parser->imm_string[i];
256 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
257 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
259 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
260 out->constant = true;
261 out->hasvalue = true;
262 out->constval.vstring = parser_strdup(str);
263 vec_push(parser->imm_string, out);
267 static ast_value* parser_const_vector(parser_t *parser, vector v)
271 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
272 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
273 return parser->imm_vector[i];
275 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
276 out->constant = true;
277 out->hasvalue = true;
278 out->constval.vvec = v;
279 vec_push(parser->imm_vector, out);
283 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
289 return parser_const_vector(parser, v);
292 static ast_value* parser_const_vector_0(parser_t *parser)
294 if (!parser->imm_vector_zero)
295 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
296 return parser->imm_vector_zero;
299 static ast_expression* parser_find_field(parser_t *parser, const char *name)
301 return util_htget(parser->htfields, name);
304 static ast_expression* parser_find_global(parser_t *parser, const char *name)
306 return util_htget(parser->htglobals, name);
309 static ast_expression* parser_find_param(parser_t *parser, const char *name)
313 if (!parser->function)
315 fun = parser->function->vtype;
316 for (i = 0; i < vec_size(fun->expression.params); ++i) {
317 if (!strcmp(fun->expression.params[i]->name, name))
318 return (ast_expression*)(fun->expression.params[i]);
323 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
328 hash = util_hthash(parser->htglobals, name);
331 for (i = vec_size(parser->variables); i > upto;) {
333 if ( (e = util_htgeth(parser->variables[i], name, hash)) )
337 return parser_find_param(parser, name);
340 static ast_expression* parser_find_var(parser_t *parser, const char *name)
344 v = parser_find_local(parser, name, 0, &dummy);
345 if (!v) v = parser_find_global(parser, name);
349 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
353 hash = util_hthash(parser->typedefs[0], name);
355 for (i = vec_size(parser->typedefs); i > upto;) {
357 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
365 size_t etype; /* 0 = expression, others are operators */
369 ast_block *block; /* for commas and function calls */
378 #define SY_PAREN_EXPR '('
379 #define SY_PAREN_FUNC 'f'
380 #define SY_PAREN_INDEX '['
382 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
393 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
397 e.out = (ast_expression*)v;
404 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
406 e.etype = 1 + (op - operators);
415 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
427 # define DEBUGSHUNTDO(x) x
429 # define DEBUGSHUNTDO(x)
432 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
433 * so we need to rotate it to become ent.(foo[n]).
435 static bool rotate_entfield_array_index_nodes(ast_expression **out)
437 ast_array_index *index;
438 ast_entfield *entfield;
442 ast_expression *entity;
444 lex_ctx ctx = ast_ctx(*out);
446 if (!ast_istype(*out, ast_array_index))
448 index = (ast_array_index*)*out;
450 if (!ast_istype(index->array, ast_entfield))
452 entfield = (ast_entfield*)index->array;
454 if (!ast_istype(entfield->field, ast_value))
456 field = (ast_value*)entfield->field;
459 entity = entfield->entity;
463 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
464 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
465 *out = (ast_expression*)entfield;
470 static bool parser_sy_pop(parser_t *parser, shunt *sy)
474 ast_expression *out = NULL;
475 ast_expression *exprs[3];
476 ast_block *blocks[3];
477 ast_value *asvalue[3];
478 size_t i, assignop, addop, subop;
479 qcint generated_op = 0;
484 if (!vec_size(sy->ops)) {
485 parseerror(parser, "internal error: missing operator");
489 if (vec_last(sy->ops).paren) {
490 parseerror(parser, "unmatched parenthesis");
494 op = &operators[vec_last(sy->ops).etype - 1];
495 ctx = vec_last(sy->ops).ctx;
497 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
499 if (vec_size(sy->out) < op->operands) {
500 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
501 op->op, (int)op->id);
505 vec_shrinkby(sy->ops, 1);
507 vec_shrinkby(sy->out, op->operands);
508 for (i = 0; i < op->operands; ++i) {
509 exprs[i] = sy->out[vec_size(sy->out)+i].out;
510 blocks[i] = sy->out[vec_size(sy->out)+i].block;
511 asvalue[i] = (ast_value*)exprs[i];
514 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
515 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
519 #define NotSameType(T) \
520 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
521 exprs[0]->expression.vtype != T)
522 #define CanConstFold1(A) \
523 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && ((ast_value*)(A))->constant)
524 #define CanConstFold(A, B) \
525 (CanConstFold1(A) && CanConstFold1(B))
526 #define ConstV(i) (asvalue[(i)]->constval.vvec)
527 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
528 #define ConstS(i) (asvalue[(i)]->constval.vstring)
532 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
536 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
537 if (exprs[1]->expression.vtype != TYPE_FIELD) {
538 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
541 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
543 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
544 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
548 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
554 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
555 !(exprs[0]->expression.vtype == TYPE_FIELD &&
556 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
558 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
559 parseerror(parser, "cannot index value of type %s", ty1);
562 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
563 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
564 parseerror(parser, "index must be of type float, not %s", ty1);
567 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
568 if (rotate_entfield_array_index_nodes(&out))
570 if (opts_standard != COMPILER_GMQCC) {
571 /* this error doesn't need to make us bail out */
572 (void)!parsewarning(parser, WARN_EXTENSIONS,
573 "accessing array-field members of an entity without parenthesis\n"
574 " -> this is an extension from -std=gmqcc");
581 ast_block_add_expr(blocks[0], exprs[1]);
583 blocks[0] = ast_block_new(ctx);
584 ast_block_add_expr(blocks[0], exprs[0]);
585 ast_block_add_expr(blocks[0], exprs[1]);
587 if (!ast_block_set_type(blocks[0], exprs[1]))
590 vec_push(sy->out, syblock(ctx, blocks[0]));
594 switch (exprs[0]->expression.vtype) {
596 if (CanConstFold1(exprs[0]))
597 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
599 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
600 (ast_expression*)parser_const_float_0(parser),
604 if (CanConstFold1(exprs[0]))
605 out = (ast_expression*)parser_const_vector_f(parser,
606 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
608 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
609 (ast_expression*)parser_const_vector_0(parser),
613 parseerror(parser, "invalid types used in expression: cannot negate type %s",
614 type_name[exprs[0]->expression.vtype]);
620 switch (exprs[0]->expression.vtype) {
622 if (CanConstFold1(exprs[0]))
623 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
625 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
628 if (CanConstFold1(exprs[0]))
629 out = (ast_expression*)parser_const_float(parser,
630 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
632 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
635 if (CanConstFold1(exprs[0]))
636 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
638 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
640 /* we don't constant-fold NOT for these types */
642 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
645 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
648 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
649 type_name[exprs[0]->expression.vtype]);
655 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
656 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
658 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
659 type_name[exprs[0]->expression.vtype],
660 type_name[exprs[1]->expression.vtype]);
663 switch (exprs[0]->expression.vtype) {
665 if (CanConstFold(exprs[0], exprs[1]))
667 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
670 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
673 if (CanConstFold(exprs[0], exprs[1]))
674 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
676 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
679 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
680 type_name[exprs[0]->expression.vtype],
681 type_name[exprs[1]->expression.vtype]);
686 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
687 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
689 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
690 type_name[exprs[1]->expression.vtype],
691 type_name[exprs[0]->expression.vtype]);
694 switch (exprs[0]->expression.vtype) {
696 if (CanConstFold(exprs[0], exprs[1]))
697 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
699 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
702 if (CanConstFold(exprs[0], exprs[1]))
703 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
705 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
708 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
709 type_name[exprs[1]->expression.vtype],
710 type_name[exprs[0]->expression.vtype]);
715 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
716 exprs[0]->expression.vtype != TYPE_VECTOR &&
717 exprs[0]->expression.vtype != TYPE_FLOAT &&
718 exprs[1]->expression.vtype != TYPE_VECTOR &&
719 exprs[1]->expression.vtype != TYPE_FLOAT)
721 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
722 type_name[exprs[1]->expression.vtype],
723 type_name[exprs[0]->expression.vtype]);
726 switch (exprs[0]->expression.vtype) {
728 if (exprs[1]->expression.vtype == TYPE_VECTOR)
730 if (CanConstFold(exprs[0], exprs[1]))
731 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
733 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
737 if (CanConstFold(exprs[0], exprs[1]))
738 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
740 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
744 if (exprs[1]->expression.vtype == TYPE_FLOAT)
746 if (CanConstFold(exprs[0], exprs[1]))
747 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
749 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
753 if (CanConstFold(exprs[0], exprs[1]))
754 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
756 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
760 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
761 type_name[exprs[1]->expression.vtype],
762 type_name[exprs[0]->expression.vtype]);
767 if (NotSameType(TYPE_FLOAT)) {
768 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
769 type_name[exprs[0]->expression.vtype],
770 type_name[exprs[1]->expression.vtype]);
773 if (CanConstFold(exprs[0], exprs[1]))
774 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
776 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
780 parseerror(parser, "qc does not have a modulo operator");
784 if (NotSameType(TYPE_FLOAT)) {
785 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
786 type_name[exprs[0]->expression.vtype],
787 type_name[exprs[1]->expression.vtype]);
790 if (CanConstFold(exprs[0], exprs[1]))
791 out = (ast_expression*)parser_const_float(parser,
792 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
793 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
795 out = (ast_expression*)ast_binary_new(ctx,
796 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
800 parseerror(parser, "TODO: bitxor");
805 case opid3('<','<','='):
806 case opid3('>','>','='):
807 parseerror(parser, "TODO: shifts");
811 generated_op += 1; /* INSTR_OR */
813 generated_op += INSTR_AND;
815 if (NotSameType(TYPE_FLOAT)) {
816 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
817 type_name[exprs[0]->expression.vtype],
818 type_name[exprs[1]->expression.vtype]);
819 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
820 parseerror(parser, "TODO: optional early out");
824 if (opts_standard == COMPILER_GMQCC)
825 con_out("TODO: early out logic\n");
826 if (CanConstFold(exprs[0], exprs[1]))
827 out = (ast_expression*)parser_const_float(parser,
828 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
830 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
834 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
835 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
836 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
837 parseerror(parser, "iperands of ternary expression must have the same type, got %s and %s", ty1, ty2);
840 if (CanConstFold1(exprs[0]))
841 out = (ConstF(0) ? exprs[1] : exprs[2]);
843 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
847 generated_op += 1; /* INSTR_GT */
849 generated_op += 1; /* INSTR_LT */
850 case opid2('>', '='):
851 generated_op += 1; /* INSTR_GE */
852 case opid2('<', '='):
853 generated_op += INSTR_LE;
854 if (NotSameType(TYPE_FLOAT)) {
855 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
856 type_name[exprs[0]->expression.vtype],
857 type_name[exprs[1]->expression.vtype]);
860 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
862 case opid2('!', '='):
863 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
864 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
865 type_name[exprs[0]->expression.vtype],
866 type_name[exprs[1]->expression.vtype]);
869 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
871 case opid2('=', '='):
872 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
873 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
874 type_name[exprs[0]->expression.vtype],
875 type_name[exprs[1]->expression.vtype]);
878 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
882 if (ast_istype(exprs[0], ast_entfield)) {
883 ast_expression *field = ((ast_entfield*)exprs[0])->field;
884 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
885 exprs[0]->expression.vtype == TYPE_FIELD &&
886 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
888 assignop = type_storep_instr[TYPE_VECTOR];
891 assignop = type_storep_instr[exprs[0]->expression.vtype];
892 if (!ast_compare_type(field->expression.next, exprs[1])) {
893 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
894 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
895 if (opts_standard == COMPILER_QCC &&
896 field->expression.next->expression.vtype == TYPE_FUNCTION &&
897 exprs[1]->expression.vtype == TYPE_FUNCTION)
899 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
900 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
906 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
911 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
912 exprs[0]->expression.vtype == TYPE_FIELD &&
913 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
915 assignop = type_store_instr[TYPE_VECTOR];
918 assignop = type_store_instr[exprs[0]->expression.vtype];
921 if (assignop == AINSTR_END) {
922 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
923 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
924 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
926 else if (!ast_compare_type(exprs[0], exprs[1])) {
927 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
928 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
929 if (opts_standard == COMPILER_QCC &&
930 exprs[0]->expression.vtype == TYPE_FUNCTION &&
931 exprs[1]->expression.vtype == TYPE_FUNCTION)
933 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
934 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
940 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
943 if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) {
944 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
946 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
948 case opid3('+','+','P'):
949 case opid3('-','-','P'):
951 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
952 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
953 parseerror(parser, "invalid type for prefix increment: %s", ty1);
956 if (op->id == opid3('+','+','P'))
960 if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) {
961 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
963 if (ast_istype(exprs[0], ast_entfield)) {
964 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
966 (ast_expression*)parser_const_float_1(parser));
968 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
970 (ast_expression*)parser_const_float_1(parser));
973 case opid3('S','+','+'):
974 case opid3('S','-','-'):
976 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
977 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
978 parseerror(parser, "invalid type for suffix increment: %s", ty1);
981 if (op->id == opid3('S','+','+')) {
988 if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) {
989 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
991 if (ast_istype(exprs[0], ast_entfield)) {
992 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
994 (ast_expression*)parser_const_float_1(parser));
996 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
998 (ast_expression*)parser_const_float_1(parser));
1002 out = (ast_expression*)ast_binary_new(ctx, subop,
1004 (ast_expression*)parser_const_float_1(parser));
1006 case opid2('+','='):
1007 case opid2('-','='):
1008 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1009 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1011 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1012 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1013 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1017 if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) {
1018 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1020 if (ast_istype(exprs[0], ast_entfield))
1021 assignop = type_storep_instr[exprs[0]->expression.vtype];
1023 assignop = type_store_instr[exprs[0]->expression.vtype];
1024 switch (exprs[0]->expression.vtype) {
1026 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1027 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1028 exprs[0], exprs[1]);
1031 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1032 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1033 exprs[0], exprs[1]);
1036 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1037 type_name[exprs[0]->expression.vtype],
1038 type_name[exprs[1]->expression.vtype]);
1042 case opid2('*','='):
1043 case opid2('/','='):
1044 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1045 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1046 exprs[0]->expression.vtype == TYPE_VECTOR))
1048 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1049 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1050 parseerror(parser, "invalid types used in expression: %s and %s",
1054 if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) {
1055 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1057 if (ast_istype(exprs[0], ast_entfield))
1058 assignop = type_storep_instr[exprs[0]->expression.vtype];
1060 assignop = type_store_instr[exprs[0]->expression.vtype];
1061 switch (exprs[0]->expression.vtype) {
1063 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1064 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1065 exprs[0], exprs[1]);
1068 if (op->id == opid2('*','=')) {
1069 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1070 exprs[0], exprs[1]);
1072 /* there's no DIV_VF */
1073 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1074 (ast_expression*)parser_const_float_1(parser),
1078 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1083 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1084 type_name[exprs[0]->expression.vtype],
1085 type_name[exprs[1]->expression.vtype]);
1089 case opid2('&','='):
1090 case opid2('|','='):
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_value) && asvalue[0]->constant) {
1099 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1101 if (ast_istype(exprs[0], ast_entfield))
1102 assignop = type_storep_instr[exprs[0]->expression.vtype];
1104 assignop = type_store_instr[exprs[0]->expression.vtype];
1105 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1106 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1107 exprs[0], exprs[1]);
1109 case opid3('&','~','='):
1110 /* This is like: a &= ~(b);
1111 * But QC has no bitwise-not, so we implement it as
1114 if (NotSameType(TYPE_FLOAT)) {
1115 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1116 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1117 parseerror(parser, "invalid types used in expression: %s and %s",
1121 if (ast_istype(exprs[0], ast_entfield))
1122 assignop = type_storep_instr[exprs[0]->expression.vtype];
1124 assignop = type_store_instr[exprs[0]->expression.vtype];
1125 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1128 if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) {
1129 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1131 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1137 parseerror(parser, "failed to apply operand %s", op->op);
1141 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1142 vec_push(sy->out, syexp(ctx, out));
1146 static bool parser_close_call(parser_t *parser, shunt *sy)
1148 /* was a function call */
1149 ast_expression *fun;
1155 vec_shrinkby(sy->ops, 1);
1156 fid = sy->ops[vec_size(sy->ops)].off;
1158 /* out[fid] is the function
1159 * everything above is parameters...
1160 * 0 params = nothing
1161 * 1 params = ast_expression
1165 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1166 parseerror(parser, "internal error: function call needs function and parameter list...");
1170 fun = sy->out[fid].out;
1172 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1174 parseerror(parser, "out of memory");
1178 if (fid+1 == vec_size(sy->out)) {
1181 } else if (fid+2 == vec_size(sy->out)) {
1183 vec_shrinkby(sy->out, 1);
1184 params = sy->out[vec_size(sy->out)].block;
1188 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1190 paramcount = vec_size(params->exprs);
1191 call->params = params->exprs;
1192 params->exprs = NULL;
1195 if (!ast_call_check_types(call))
1198 parseerror(parser, "invalid function call");
1202 /* overwrite fid, the function, with a call */
1203 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1205 if (fun->expression.vtype != TYPE_FUNCTION) {
1206 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1210 if (!fun->expression.next) {
1211 parseerror(parser, "could not determine function return type");
1214 if (vec_size(fun->expression.params) != paramcount &&
1215 !(fun->expression.variadic &&
1216 vec_size(fun->expression.params) < paramcount))
1219 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1221 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1222 if (opts_standard == COMPILER_GMQCC)
1225 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1226 " -> `%s` has been declared here: %s:%i",
1227 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1228 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1230 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1231 " -> `%s` has been declared here: %s:%i",
1232 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1233 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1239 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1240 "too %s parameters for call to %s: expected %i, got %i\n"
1241 " -> `%s` has been declared here: %s:%i",
1242 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1243 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1245 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1246 "too %s parameters for function call: expected %i, got %i\n"
1247 " -> `%s` has been declared here: %s:%i",
1248 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1249 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1257 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1259 if (!vec_size(sy->ops)) {
1260 parseerror(parser, "unmatched closing paren");
1263 /* this would for bit a + (x) because there are no operators inside (x)
1264 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1265 parseerror(parser, "empty parenthesis expression");
1269 while (vec_size(sy->ops)) {
1270 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1271 if (!parser_close_call(parser, sy))
1275 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1276 vec_shrinkby(sy->ops, 1);
1277 return !functions_only;
1279 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1282 /* pop off the parenthesis */
1283 vec_shrinkby(sy->ops, 1);
1284 /* then apply the index operator */
1285 if (!parser_sy_pop(parser, sy))
1289 if (!parser_sy_pop(parser, sy))
1295 static void parser_reclassify_token(parser_t *parser)
1298 for (i = 0; i < operator_count; ++i) {
1299 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1300 parser->tok = TOKEN_OPERATOR;
1306 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1308 ast_expression *expr = NULL;
1310 bool wantop = false;
1311 bool gotmemberof = false;
1313 /* count the parens because an if starts with one, so the
1314 * end of a condition is an unmatched closing paren
1322 parser->lex->flags.noops = false;
1324 parser_reclassify_token(parser);
1329 gotmemberof = false;
1331 parser->memberof = 0;
1333 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1334 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1336 /* a translatable string */
1340 parseerror(parser, "expected operator or end of statement, got constant");
1344 parser->lex->flags.noops = true;
1345 if (!parser_next(parser) || parser->tok != '(') {
1346 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1349 parser->lex->flags.noops = false;
1350 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1351 parseerror(parser, "expected a constant string in translatable-string extension");
1354 val = parser_const_string(parser, parser_tokval(parser), true);
1358 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1359 DEBUGSHUNTDO(con_out("push string\n"));
1361 if (!parser_next(parser) || parser->tok != ')') {
1362 parseerror(parser, "expected closing paren after translatable string");
1366 else if (parser->tok == TOKEN_IDENT)
1368 ast_expression *var;
1370 parseerror(parser, "expected operator or end of statement");
1375 if (opts_standard == COMPILER_GMQCC)
1377 if (parser->memberof == TYPE_ENTITY) {
1378 /* still get vars first since there could be a fieldpointer */
1379 var = parser_find_var(parser, parser_tokval(parser));
1381 var = parser_find_field(parser, parser_tokval(parser));
1383 else if (parser->memberof == TYPE_VECTOR)
1385 parseerror(parser, "TODO: implement effective vector member access");
1388 else if (parser->memberof) {
1389 parseerror(parser, "namespace for member not found");
1393 var = parser_find_var(parser, parser_tokval(parser));
1395 var = parser_find_var(parser, parser_tokval(parser));
1397 var = parser_find_field(parser, parser_tokval(parser));
1400 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1403 if (ast_istype(var, ast_value))
1404 ((ast_value*)var)->uses++;
1405 vec_push(sy.out, syexp(parser_ctx(parser), var));
1406 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1408 else if (parser->tok == TOKEN_FLOATCONST) {
1411 parseerror(parser, "expected operator or end of statement, got constant");
1415 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1418 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1419 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1421 else if (parser->tok == TOKEN_INTCONST) {
1424 parseerror(parser, "expected operator or end of statement, got constant");
1428 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1431 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1432 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1434 else if (parser->tok == TOKEN_STRINGCONST) {
1437 parseerror(parser, "expected operator or end of statement, got constant");
1441 val = parser_const_string(parser, parser_tokval(parser), false);
1444 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1445 DEBUGSHUNTDO(con_out("push string\n"));
1447 else if (parser->tok == TOKEN_VECTORCONST) {
1450 parseerror(parser, "expected operator or end of statement, got constant");
1454 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1457 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1458 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1459 parser_token(parser)->constval.v.x,
1460 parser_token(parser)->constval.v.y,
1461 parser_token(parser)->constval.v.z));
1463 else if (parser->tok == '(') {
1464 parseerror(parser, "internal error: '(' should be classified as operator");
1467 else if (parser->tok == '[') {
1468 parseerror(parser, "internal error: '[' should be classified as operator");
1471 else if (parser->tok == ')') {
1473 DEBUGSHUNTDO(con_out("do[op] )\n"));
1477 /* we do expect an operator next */
1478 /* closing an opening paren */
1479 if (!parser_close_paren(parser, &sy, false))
1482 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1486 /* allowed for function calls */
1487 if (!parser_close_paren(parser, &sy, true))
1492 else if (parser->tok == ']') {
1494 parseerror(parser, "operand expected");
1498 if (!parser_close_paren(parser, &sy, false))
1502 else if (parser->tok != TOKEN_OPERATOR) {
1504 parseerror(parser, "expected operator or end of statement");
1511 /* classify the operator */
1512 const oper_info *op;
1513 const oper_info *olast = NULL;
1515 for (o = 0; o < operator_count; ++o) {
1516 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1517 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1518 !strcmp(parser_tokval(parser), operators[o].op))
1523 if (o == operator_count) {
1524 /* no operator found... must be the end of the statement */
1527 /* found an operator */
1530 /* when declaring variables, a comma starts a new variable */
1531 if (op->id == opid1(',') && !parens && stopatcomma) {
1532 /* fixup the token */
1537 /* a colon without a pervious question mark cannot be a ternary */
1538 if (!ternaries && op->id == opid2(':','?')) {
1543 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1544 olast = &operators[vec_last(sy.ops).etype-1];
1547 (op->prec < olast->prec) ||
1548 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1550 if (!parser_sy_pop(parser, &sy))
1552 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1553 olast = &operators[vec_last(sy.ops).etype-1];
1558 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1559 /* for gmqcc standard: open up the namespace of the previous type */
1560 ast_expression *prevex = vec_last(sy.out).out;
1562 parseerror(parser, "unexpected member operator");
1565 if (prevex->expression.vtype == TYPE_ENTITY)
1566 parser->memberof = TYPE_ENTITY;
1567 else if (prevex->expression.vtype == TYPE_VECTOR)
1568 parser->memberof = TYPE_VECTOR;
1570 parseerror(parser, "type error: type has no members");
1576 if (op->id == opid1('(')) {
1578 size_t sycount = vec_size(sy.out);
1579 DEBUGSHUNTDO(con_out("push [op] (\n"));
1581 /* we expected an operator, this is the function-call operator */
1582 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1585 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1586 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1589 } else if (op->id == opid1('[')) {
1591 parseerror(parser, "unexpected array subscript");
1595 /* push both the operator and the paren, this makes life easier */
1596 vec_push(sy.ops, syop(parser_ctx(parser), op));
1597 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1599 } else if (op->id == opid2('?',':')) {
1601 vec_push(sy.ops, syop(parser_ctx(parser), op));
1604 } else if (op->id == opid2(':','?')) {
1605 /* we don't push this operator */
1609 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1610 vec_push(sy.ops, syop(parser_ctx(parser), op));
1611 wantop = !!(op->flags & OP_SUFFIX);
1614 if (!parser_next(parser)) {
1617 if (parser->tok == ';' ||
1618 (!parens && parser->tok == ']'))
1624 while (vec_size(sy.ops)) {
1625 if (!parser_sy_pop(parser, &sy))
1629 parser->lex->flags.noops = true;
1630 if (!vec_size(sy.out)) {
1631 parseerror(parser, "empty expression");
1634 expr = sy.out[0].out;
1637 DEBUGSHUNTDO(con_out("shunt done\n"));
1641 parser->lex->flags.noops = true;
1647 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1649 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1652 if (!parser_next(parser)) {
1659 static void parser_enterblock(parser_t *parser)
1661 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1662 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1663 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1664 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1667 static bool parser_leaveblock(parser_t *parser)
1670 size_t locals, typedefs;
1672 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1673 parseerror(parser, "internal error: parser_leaveblock with no block");
1677 util_htdel(vec_last(parser->variables));
1678 vec_pop(parser->variables);
1679 if (!vec_size(parser->_blocklocals)) {
1680 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1684 locals = vec_last(parser->_blocklocals);
1685 vec_pop(parser->_blocklocals);
1686 while (vec_size(parser->_locals) != locals) {
1687 ast_expression *e = vec_last(parser->_locals);
1688 ast_value *v = (ast_value*)e;
1689 vec_pop(parser->_locals);
1690 if (ast_istype(e, ast_value) && !v->uses) {
1691 if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
1696 typedefs = vec_last(parser->_blocktypedefs);
1697 while (vec_size(parser->_typedefs) != typedefs) {
1698 ast_delete(vec_last(parser->_typedefs));
1699 vec_pop(parser->_typedefs);
1701 util_htdel(vec_last(parser->typedefs));
1702 vec_pop(parser->typedefs);
1707 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1709 vec_push(parser->_locals, e);
1710 util_htset(vec_last(parser->variables), name, (void*)e);
1713 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1716 ast_expression *cond, *ontrue, *onfalse = NULL;
1719 lex_ctx ctx = parser_ctx(parser);
1721 (void)block; /* not touching */
1723 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1724 if (!parser_next(parser)) {
1725 parseerror(parser, "expected condition or 'not'");
1728 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
1730 if (!parser_next(parser)) {
1731 parseerror(parser, "expected condition in parenthesis");
1735 if (parser->tok != '(') {
1736 parseerror(parser, "expected 'if' condition in parenthesis");
1739 /* parse into the expression */
1740 if (!parser_next(parser)) {
1741 parseerror(parser, "expected 'if' condition after opening paren");
1744 /* parse the condition */
1745 cond = parse_expression_leave(parser, false);
1749 if (parser->tok != ')') {
1750 parseerror(parser, "expected closing paren after 'if' condition");
1754 /* parse into the 'then' branch */
1755 if (!parser_next(parser)) {
1756 parseerror(parser, "expected statement for on-true branch of 'if'");
1760 ontrue = parse_statement_or_block(parser);
1765 /* check for an else */
1766 if (!strcmp(parser_tokval(parser), "else")) {
1767 /* parse into the 'else' branch */
1768 if (!parser_next(parser)) {
1769 parseerror(parser, "expected on-false branch after 'else'");
1774 onfalse = parse_statement_or_block(parser);
1783 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1785 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1786 *out = (ast_expression*)ifthen;
1790 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1793 ast_expression *cond, *ontrue;
1795 lex_ctx ctx = parser_ctx(parser);
1797 (void)block; /* not touching */
1799 /* skip the 'while' and check for opening paren */
1800 if (!parser_next(parser) || parser->tok != '(') {
1801 parseerror(parser, "expected 'while' condition in parenthesis");
1804 /* parse into the expression */
1805 if (!parser_next(parser)) {
1806 parseerror(parser, "expected 'while' condition after opening paren");
1809 /* parse the condition */
1810 cond = parse_expression_leave(parser, false);
1814 if (parser->tok != ')') {
1815 parseerror(parser, "expected closing paren after 'while' condition");
1819 /* parse into the 'then' branch */
1820 if (!parser_next(parser)) {
1821 parseerror(parser, "expected while-loop body");
1825 ontrue = parse_statement_or_block(parser);
1831 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1832 *out = (ast_expression*)aloop;
1836 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1839 ast_expression *cond, *ontrue;
1841 lex_ctx ctx = parser_ctx(parser);
1843 (void)block; /* not touching */
1845 /* skip the 'do' and get the body */
1846 if (!parser_next(parser)) {
1847 parseerror(parser, "expected loop body");
1850 ontrue = parse_statement_or_block(parser);
1854 /* expect the "while" */
1855 if (parser->tok != TOKEN_KEYWORD ||
1856 strcmp(parser_tokval(parser), "while"))
1858 parseerror(parser, "expected 'while' and condition");
1863 /* skip the 'while' and check for opening paren */
1864 if (!parser_next(parser) || parser->tok != '(') {
1865 parseerror(parser, "expected 'while' condition in parenthesis");
1869 /* parse into the expression */
1870 if (!parser_next(parser)) {
1871 parseerror(parser, "expected 'while' condition after opening paren");
1875 /* parse the condition */
1876 cond = parse_expression_leave(parser, false);
1880 if (parser->tok != ')') {
1881 parseerror(parser, "expected closing paren after 'while' condition");
1887 if (!parser_next(parser) || parser->tok != ';') {
1888 parseerror(parser, "expected semicolon after condition");
1894 if (!parser_next(parser)) {
1895 parseerror(parser, "parse error");
1901 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1902 *out = (ast_expression*)aloop;
1906 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1909 ast_expression *initexpr, *cond, *increment, *ontrue;
1913 lex_ctx ctx = parser_ctx(parser);
1915 parser_enterblock(parser);
1922 /* skip the 'while' and check for opening paren */
1923 if (!parser_next(parser) || parser->tok != '(') {
1924 parseerror(parser, "expected 'for' expressions in parenthesis");
1927 /* parse into the expression */
1928 if (!parser_next(parser)) {
1929 parseerror(parser, "expected 'for' initializer after opening paren");
1934 if (parser->tok == TOKEN_IDENT)
1935 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
1937 if (typevar || parser->tok == TOKEN_TYPENAME) {
1938 if (opts_standard != COMPILER_GMQCC) {
1939 if (parsewarning(parser, WARN_EXTENSIONS,
1940 "current standard does not allow variable declarations in for-loop initializers"))
1944 parseerror(parser, "TODO: assignment of new variables to be non-const");
1946 if (!parse_variable(parser, block, true, false, typevar))
1949 else if (parser->tok != ';')
1951 initexpr = parse_expression_leave(parser, false);
1956 /* move on to condition */
1957 if (parser->tok != ';') {
1958 parseerror(parser, "expected semicolon after for-loop initializer");
1961 if (!parser_next(parser)) {
1962 parseerror(parser, "expected for-loop condition");
1966 /* parse the condition */
1967 if (parser->tok != ';') {
1968 cond = parse_expression_leave(parser, false);
1973 /* move on to incrementor */
1974 if (parser->tok != ';') {
1975 parseerror(parser, "expected semicolon after for-loop initializer");
1978 if (!parser_next(parser)) {
1979 parseerror(parser, "expected for-loop condition");
1983 /* parse the incrementor */
1984 if (parser->tok != ')') {
1985 increment = parse_expression_leave(parser, false);
1988 if (!ast_side_effects(increment)) {
1989 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
1995 if (parser->tok != ')') {
1996 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1999 /* parse into the 'then' branch */
2000 if (!parser_next(parser)) {
2001 parseerror(parser, "expected for-loop body");
2004 ontrue = parse_statement_or_block(parser);
2009 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
2010 *out = (ast_expression*)aloop;
2012 if (!parser_leaveblock(parser))
2016 if (initexpr) ast_delete(initexpr);
2017 if (cond) ast_delete(cond);
2018 if (increment) ast_delete(increment);
2019 (void)!parser_leaveblock(parser);
2023 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2025 ast_expression *exp = NULL;
2026 ast_return *ret = NULL;
2027 ast_value *expected = parser->function->vtype;
2029 (void)block; /* not touching */
2031 if (!parser_next(parser)) {
2032 parseerror(parser, "expected return expression");
2036 if (parser->tok != ';') {
2037 exp = parse_expression(parser, false);
2041 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2042 parseerror(parser, "return with invalid expression");
2045 ret = ast_return_new(exp->expression.node.context, exp);
2051 if (!parser_next(parser))
2052 parseerror(parser, "parse error");
2053 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2054 if (opts_standard != COMPILER_GMQCC)
2055 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2057 parseerror(parser, "return without value");
2059 ret = ast_return_new(parser_ctx(parser), NULL);
2061 *out = (ast_expression*)ret;
2065 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2067 lex_ctx ctx = parser_ctx(parser);
2069 (void)block; /* not touching */
2071 if (!parser_next(parser) || parser->tok != ';') {
2072 parseerror(parser, "expected semicolon");
2076 if (!parser_next(parser))
2077 parseerror(parser, "parse error");
2079 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
2083 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2085 ast_expression *operand;
2087 ast_switch *switchnode;
2088 ast_switch_case swcase;
2090 lex_ctx ctx = parser_ctx(parser);
2092 (void)block; /* not touching */
2094 /* parse over the opening paren */
2095 if (!parser_next(parser) || parser->tok != '(') {
2096 parseerror(parser, "expected switch operand in parenthesis");
2100 /* parse into the expression */
2101 if (!parser_next(parser)) {
2102 parseerror(parser, "expected switch operand");
2105 /* parse the operand */
2106 operand = parse_expression_leave(parser, false);
2110 switchnode = ast_switch_new(ctx, operand);
2113 if (parser->tok != ')') {
2114 ast_delete(switchnode);
2115 parseerror(parser, "expected closing paren after 'switch' operand");
2119 /* parse over the opening paren */
2120 if (!parser_next(parser) || parser->tok != '{') {
2121 ast_delete(switchnode);
2122 parseerror(parser, "expected list of cases");
2126 if (!parser_next(parser)) {
2127 ast_delete(switchnode);
2128 parseerror(parser, "expected 'case' or 'default'");
2133 while (parser->tok != '}') {
2134 ast_block *caseblock;
2136 if (parser->tok != TOKEN_KEYWORD) {
2137 ast_delete(switchnode);
2138 parseerror(parser, "expected 'case' or 'default'");
2141 if (!strcmp(parser_tokval(parser), "case")) {
2142 if (!parser_next(parser)) {
2143 ast_delete(switchnode);
2144 parseerror(parser, "expected expression for case");
2147 swcase.value = parse_expression_leave(parser, false);
2148 if (!swcase.value) {
2149 ast_delete(switchnode);
2150 parseerror(parser, "expected expression for case");
2153 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2154 opval = (ast_value*)swcase.value;
2155 if (!ast_istype(swcase.value, ast_value) || !opval->constant) {
2156 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2162 else if (!strcmp(parser_tokval(parser), "default")) {
2163 swcase.value = NULL;
2164 if (!parser_next(parser)) {
2165 ast_delete(switchnode);
2166 parseerror(parser, "expected colon");
2171 /* Now the colon and body */
2172 if (parser->tok != ':') {
2173 if (swcase.value) ast_unref(swcase.value);
2174 ast_delete(switchnode);
2175 parseerror(parser, "expected colon");
2179 if (!parser_next(parser)) {
2180 if (swcase.value) ast_unref(swcase.value);
2181 ast_delete(switchnode);
2182 parseerror(parser, "expected statements or case");
2185 caseblock = ast_block_new(parser_ctx(parser));
2187 if (swcase.value) ast_unref(swcase.value);
2188 ast_delete(switchnode);
2191 swcase.code = (ast_expression*)caseblock;
2192 vec_push(switchnode->cases, swcase);
2194 ast_expression *expr;
2195 if (parser->tok == '}')
2197 if (parser->tok == TOKEN_KEYWORD) {
2198 if (!strcmp(parser_tokval(parser), "case") ||
2199 !strcmp(parser_tokval(parser), "default"))
2204 if (!parse_statement(parser, caseblock, &expr, true)) {
2205 ast_delete(switchnode);
2210 ast_block_add_expr(caseblock, expr);
2215 if (parser->tok != '}') {
2216 ast_delete(switchnode);
2217 parseerror(parser, "expected closing paren of case list");
2220 if (!parser_next(parser)) {
2221 ast_delete(switchnode);
2222 parseerror(parser, "parse error after switch");
2225 *out = (ast_expression*)switchnode;
2229 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2231 ast_value *typevar = NULL;
2232 if (parser->tok == TOKEN_IDENT)
2233 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2235 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2237 /* local variable */
2239 parseerror(parser, "cannot declare a variable from here");
2242 if (opts_standard == COMPILER_QCC) {
2243 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2246 if (!parse_variable(parser, block, false, false, typevar))
2251 else if (parser->tok == TOKEN_KEYWORD)
2253 if (!strcmp(parser_tokval(parser), "local"))
2256 parseerror(parser, "cannot declare a local variable here");
2259 if (!parser_next(parser)) {
2260 parseerror(parser, "expected variable declaration");
2263 if (!parse_variable(parser, block, true, false, NULL))
2268 else if (!strcmp(parser_tokval(parser), "return"))
2270 return parse_return(parser, block, out);
2272 else if (!strcmp(parser_tokval(parser), "if"))
2274 return parse_if(parser, block, out);
2276 else if (!strcmp(parser_tokval(parser), "while"))
2278 return parse_while(parser, block, out);
2280 else if (!strcmp(parser_tokval(parser), "do"))
2282 return parse_dowhile(parser, block, out);
2284 else if (!strcmp(parser_tokval(parser), "for"))
2286 if (opts_standard == COMPILER_QCC) {
2287 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2290 return parse_for(parser, block, out);
2292 else if (!strcmp(parser_tokval(parser), "break"))
2294 return parse_break_continue(parser, block, out, false);
2296 else if (!strcmp(parser_tokval(parser), "continue"))
2298 return parse_break_continue(parser, block, out, true);
2300 else if (!strcmp(parser_tokval(parser), "switch"))
2302 return parse_switch(parser, block, out);
2304 else if (!strcmp(parser_tokval(parser), "case") ||
2305 !strcmp(parser_tokval(parser), "default"))
2308 parseerror(parser, "unexpected 'case' label");
2313 else if (!strcmp(parser_tokval(parser), "typedef"))
2315 if (!parser_next(parser)) {
2316 parseerror(parser, "expected type definition after 'typedef'");
2319 return parse_typedef(parser);
2321 parseerror(parser, "Unexpected keyword");
2324 else if (parser->tok == '{')
2327 inner = parse_block(parser, false);
2330 *out = (ast_expression*)inner;
2335 ast_expression *exp = parse_expression(parser, false);
2339 if (!ast_side_effects(exp)) {
2340 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2347 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn)
2351 parser_enterblock(parser);
2353 if (!parser_next(parser)) { /* skip the '{' */
2354 parseerror(parser, "expected function body");
2358 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2360 ast_expression *expr = NULL;
2361 if (parser->tok == '}')
2364 if (!parse_statement(parser, block, &expr, false)) {
2365 /* parseerror(parser, "parse error"); */
2371 ast_block_add_expr(block, expr);
2374 if (parser->tok != '}') {
2377 if (warnreturn && parser->function->vtype->expression.next->expression.vtype != TYPE_VOID)
2379 if (!vec_size(block->exprs) ||
2380 !ast_istype(vec_last(block->exprs), ast_return))
2382 if (parsewarning(parser, WARN_MISSING_RETURN_VALUES, "control reaches end of non-void function")) {
2388 (void)parser_next(parser);
2392 if (!parser_leaveblock(parser))
2394 return retval && !!block;
2397 static ast_block* parse_block(parser_t *parser, bool warnreturn)
2400 block = ast_block_new(parser_ctx(parser));
2403 if (!parse_block_into(parser, block, warnreturn)) {
2404 ast_block_delete(block);
2410 static ast_expression* parse_statement_or_block(parser_t *parser)
2412 ast_expression *expr = NULL;
2413 if (parser->tok == '{')
2414 return (ast_expression*)parse_block(parser, false);
2415 if (!parse_statement(parser, NULL, &expr, false))
2420 static bool create_vector_members(ast_value *var, ast_member **me)
2423 size_t len = strlen(var->name);
2425 for (i = 0; i < 3; ++i) {
2426 char *name = mem_a(len+3);
2427 memcpy(name, var->name, len);
2429 name[len+1] = 'x'+i;
2431 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
2440 do { ast_member_delete(me[--i]); } while(i);
2444 static bool parse_function_body(parser_t *parser, ast_value *var)
2446 ast_block *block = NULL;
2451 ast_expression *framenum = NULL;
2452 ast_expression *nextthink = NULL;
2453 /* None of the following have to be deleted */
2454 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2455 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2456 bool has_frame_think;
2460 has_frame_think = false;
2461 old = parser->function;
2463 if (var->expression.variadic) {
2464 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2465 "variadic function with implementation will not be able to access additional parameters"))
2471 if (parser->tok == '[') {
2472 /* got a frame definition: [ framenum, nextthink ]
2473 * this translates to:
2474 * self.frame = framenum;
2475 * self.nextthink = time + 0.1;
2476 * self.think = nextthink;
2480 fld_think = parser_find_field(parser, "think");
2481 fld_nextthink = parser_find_field(parser, "nextthink");
2482 fld_frame = parser_find_field(parser, "frame");
2483 if (!fld_think || !fld_nextthink || !fld_frame) {
2484 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2485 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2488 gbl_time = parser_find_global(parser, "time");
2489 gbl_self = parser_find_global(parser, "self");
2490 if (!gbl_time || !gbl_self) {
2491 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2492 parseerror(parser, "please declare the following globals: `time`, `self`");
2496 if (!parser_next(parser))
2499 framenum = parse_expression_leave(parser, true);
2501 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2504 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
2505 ast_unref(framenum);
2506 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2510 if (parser->tok != ',') {
2511 ast_unref(framenum);
2512 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2513 parseerror(parser, "Got a %i\n", parser->tok);
2517 if (!parser_next(parser)) {
2518 ast_unref(framenum);
2522 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2524 /* qc allows the use of not-yet-declared functions here
2525 * - this automatically creates a prototype */
2526 ast_value *thinkfunc;
2527 ast_expression *functype = fld_think->expression.next;
2529 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2530 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2531 ast_unref(framenum);
2532 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2536 if (!parser_next(parser)) {
2537 ast_unref(framenum);
2538 ast_delete(thinkfunc);
2542 vec_push(parser->globals, (ast_expression*)thinkfunc);
2543 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
2544 nextthink = (ast_expression*)thinkfunc;
2547 nextthink = parse_expression_leave(parser, true);
2549 ast_unref(framenum);
2550 parseerror(parser, "expected a think-function in [frame,think] notation");
2555 if (!ast_istype(nextthink, ast_value)) {
2556 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2560 if (retval && parser->tok != ']') {
2561 parseerror(parser, "expected closing `]` for [frame,think] notation");
2565 if (retval && !parser_next(parser)) {
2569 if (retval && parser->tok != '{') {
2570 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2575 ast_unref(nextthink);
2576 ast_unref(framenum);
2580 has_frame_think = true;
2583 block = ast_block_new(parser_ctx(parser));
2585 parseerror(parser, "failed to allocate block");
2586 if (has_frame_think) {
2587 ast_unref(nextthink);
2588 ast_unref(framenum);
2593 if (has_frame_think) {
2595 ast_expression *self_frame;
2596 ast_expression *self_nextthink;
2597 ast_expression *self_think;
2598 ast_expression *time_plus_1;
2599 ast_store *store_frame;
2600 ast_store *store_nextthink;
2601 ast_store *store_think;
2603 ctx = parser_ctx(parser);
2604 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2605 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2606 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2608 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2609 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2611 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2612 if (self_frame) ast_delete(self_frame);
2613 if (self_nextthink) ast_delete(self_nextthink);
2614 if (self_think) ast_delete(self_think);
2615 if (time_plus_1) ast_delete(time_plus_1);
2621 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2622 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2623 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2626 ast_delete(self_frame);
2629 if (!store_nextthink) {
2630 ast_delete(self_nextthink);
2634 ast_delete(self_think);
2638 if (store_frame) ast_delete(store_frame);
2639 if (store_nextthink) ast_delete(store_nextthink);
2640 if (store_think) ast_delete(store_think);
2643 ast_block_add_expr(block, (ast_expression*)store_frame);
2644 ast_block_add_expr(block, (ast_expression*)store_nextthink);
2645 ast_block_add_expr(block, (ast_expression*)store_think);
2649 parseerror(parser, "failed to generate code for [frame,think]");
2650 ast_unref(nextthink);
2651 ast_unref(framenum);
2657 parser_enterblock(parser);
2659 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
2661 ast_value *param = var->expression.params[parami];
2664 if (param->expression.vtype != TYPE_VECTOR &&
2665 (param->expression.vtype != TYPE_FIELD ||
2666 param->expression.next->expression.vtype != TYPE_VECTOR))
2671 if (!create_vector_members(param, me)) {
2672 ast_block_delete(block);
2676 for (e = 0; e < 3; ++e) {
2677 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
2678 ast_block_collect(block, (ast_expression*)me[e]);
2682 func = ast_function_new(ast_ctx(var), var->name, var);
2684 parseerror(parser, "failed to allocate function for `%s`", var->name);
2685 ast_block_delete(block);
2688 vec_push(parser->functions, func);
2690 parser->function = func;
2691 if (!parse_block_into(parser, block, true)) {
2692 ast_block_delete(block);
2696 vec_push(func->blocks, block);
2698 parser->function = old;
2699 if (!parser_leaveblock(parser))
2701 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
2702 parseerror(parser, "internal error: local scopes left");
2706 if (parser->tok == ';')
2707 return parser_next(parser);
2708 else if (opts_standard == COMPILER_QCC)
2709 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
2713 vec_pop(parser->functions);
2714 ast_function_delete(func);
2715 var->constval.vfunc = NULL;
2718 (void)!parser_leaveblock(parser);
2719 parser->function = old;
2723 static ast_expression *array_accessor_split(
2728 ast_expression *left,
2729 ast_expression *right
2735 lex_ctx ctx = ast_ctx(array);
2737 if (!left || !right) {
2738 if (left) ast_delete(left);
2739 if (right) ast_delete(right);
2743 cmp = ast_binary_new(ctx, INSTR_LT,
2744 (ast_expression*)index,
2745 (ast_expression*)parser_const_float(parser, middle));
2749 parseerror(parser, "internal error: failed to create comparison for array setter");
2753 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
2755 ast_delete(cmp); /* will delete left and right */
2756 parseerror(parser, "internal error: failed to create conditional jump for array setter");
2760 return (ast_expression*)ifthen;
2763 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
2765 lex_ctx ctx = ast_ctx(array);
2767 if (from+1 == afterend) {
2768 /* set this value */
2771 ast_array_index *subscript;
2773 int assignop = type_store_instr[value->expression.vtype];
2775 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2776 assignop = INSTR_STORE_V;
2778 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2782 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
2784 ast_delete(subscript);
2788 block = ast_block_new(ctx);
2794 ast_block_add_expr(block, (ast_expression*)st);
2796 ret = ast_return_new(ctx, NULL);
2802 ast_block_add_expr(block, (ast_expression*)ret);
2804 return (ast_expression*)block;
2806 ast_expression *left, *right;
2807 size_t diff = afterend - from;
2808 size_t middle = from + diff/2;
2809 left = array_setter_node(parser, array, index, value, from, middle);
2810 right = array_setter_node(parser, array, index, value, middle, afterend);
2811 return array_accessor_split(parser, array, index, middle, left, right);
2815 static ast_expression *array_field_setter_node(
2824 lex_ctx ctx = ast_ctx(array);
2826 if (from+1 == afterend) {
2827 /* set this value */
2830 ast_entfield *entfield;
2831 ast_array_index *subscript;
2833 int assignop = type_storep_instr[value->expression.vtype];
2835 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2836 assignop = INSTR_STOREP_V;
2838 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2842 entfield = ast_entfield_new_force(ctx,
2843 (ast_expression*)entity,
2844 (ast_expression*)subscript,
2845 (ast_expression*)subscript);
2847 ast_delete(subscript);
2851 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
2853 ast_delete(entfield);
2857 block = ast_block_new(ctx);
2863 ast_block_add_expr(block, (ast_expression*)st);
2865 ret = ast_return_new(ctx, NULL);
2871 ast_block_add_expr(block, (ast_expression*)ret);
2873 return (ast_expression*)block;
2875 ast_expression *left, *right;
2876 size_t diff = afterend - from;
2877 size_t middle = from + diff/2;
2878 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
2879 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
2880 return array_accessor_split(parser, array, index, middle, left, right);
2884 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
2886 lex_ctx ctx = ast_ctx(array);
2888 if (from+1 == afterend) {
2890 ast_array_index *subscript;
2892 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2896 ret = ast_return_new(ctx, (ast_expression*)subscript);
2898 ast_delete(subscript);
2902 return (ast_expression*)ret;
2904 ast_expression *left, *right;
2905 size_t diff = afterend - from;
2906 size_t middle = from + diff/2;
2907 left = array_getter_node(parser, array, index, from, middle);
2908 right = array_getter_node(parser, array, index, middle, afterend);
2909 return array_accessor_split(parser, array, index, middle, left, right);
2913 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
2915 ast_function *func = NULL;
2916 ast_value *fval = NULL;
2917 ast_block *body = NULL;
2919 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
2921 parseerror(parser, "failed to create accessor function value");
2925 func = ast_function_new(ast_ctx(array), funcname, fval);
2928 parseerror(parser, "failed to create accessor function node");
2932 body = ast_block_new(ast_ctx(array));
2934 parseerror(parser, "failed to create block for array accessor");
2940 vec_push(func->blocks, body);
2943 vec_push(parser->accessors, fval);
2948 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
2950 ast_expression *root = NULL;
2951 ast_value *index = NULL;
2952 ast_value *value = NULL;
2956 if (!ast_istype(array->expression.next, ast_value)) {
2957 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2961 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2963 func = fval->constval.vfunc;
2964 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2966 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2967 value = ast_value_copy((ast_value*)array->expression.next);
2969 if (!index || !value) {
2970 parseerror(parser, "failed to create locals for array accessor");
2973 (void)!ast_value_set_name(value, "value"); /* not important */
2974 vec_push(fval->expression.params, index);
2975 vec_push(fval->expression.params, value);
2977 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
2979 parseerror(parser, "failed to build accessor search tree");
2983 ast_block_add_expr(func->blocks[0], root);
2984 array->setter = fval;
2987 if (index) ast_delete(index);
2988 if (value) ast_delete(value);
2989 if (root) ast_delete(root);
2995 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
2997 ast_expression *root = NULL;
2998 ast_value *entity = NULL;
2999 ast_value *index = NULL;
3000 ast_value *value = NULL;
3004 if (!ast_istype(array->expression.next, ast_value)) {
3005 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3009 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3011 func = fval->constval.vfunc;
3012 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3014 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
3015 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3016 value = ast_value_copy((ast_value*)array->expression.next);
3017 if (!entity || !index || !value) {
3018 parseerror(parser, "failed to create locals for array accessor");
3021 (void)!ast_value_set_name(value, "value"); /* not important */
3022 vec_push(fval->expression.params, entity);
3023 vec_push(fval->expression.params, index);
3024 vec_push(fval->expression.params, value);
3026 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3028 parseerror(parser, "failed to build accessor search tree");
3032 ast_block_add_expr(func->blocks[0], root);
3033 array->setter = fval;
3036 if (entity) ast_delete(entity);
3037 if (index) ast_delete(index);
3038 if (value) ast_delete(value);
3039 if (root) ast_delete(root);
3045 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3047 ast_expression *root = NULL;
3048 ast_value *index = NULL;
3052 /* NOTE: checking array->expression.next rather than elemtype since
3053 * for fields elemtype is a temporary fieldtype.
3055 if (!ast_istype(array->expression.next, ast_value)) {
3056 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3060 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3062 func = fval->constval.vfunc;
3063 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3065 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3068 parseerror(parser, "failed to create locals for array accessor");
3071 vec_push(fval->expression.params, index);
3073 root = array_getter_node(parser, array, index, 0, array->expression.count);
3075 parseerror(parser, "failed to build accessor search tree");
3079 ast_block_add_expr(func->blocks[0], root);
3080 array->getter = fval;
3083 if (index) ast_delete(index);
3084 if (root) ast_delete(root);
3090 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3091 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3099 bool variadic = false;
3101 ctx = parser_ctx(parser);
3103 /* for the sake of less code we parse-in in this function */
3104 if (!parser_next(parser)) {
3105 parseerror(parser, "expected parameter list");
3111 /* parse variables until we hit a closing paren */
3112 while (parser->tok != ')') {
3114 /* there must be commas between them */
3115 if (parser->tok != ',') {
3116 parseerror(parser, "expected comma or end of parameter list");
3119 if (!parser_next(parser)) {
3120 parseerror(parser, "expected parameter");
3126 if (parser->tok == TOKEN_DOTS) {
3127 /* '...' indicates a varargs function */
3129 if (!parser_next(parser)) {
3130 parseerror(parser, "expected parameter");
3133 if (parser->tok != ')') {
3134 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3140 /* for anything else just parse a typename */
3141 param = parse_typename(parser, NULL, NULL);
3144 vec_push(params, param);
3145 if (param->expression.vtype >= TYPE_VARIANT) {
3146 char typename[1024];
3147 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
3148 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
3155 if (vec_size(params) > 8 && opts_standard == COMPILER_QCC)
3156 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3159 if (!parser_next(parser)) {
3160 parseerror(parser, "parse error after typename");
3164 /* now turn 'var' into a function type */
3165 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3166 fval->expression.next = (ast_expression*)var;
3167 fval->expression.variadic = variadic;
3170 var->expression.params = params;
3177 for (i = 0; i < vec_size(params); ++i)
3178 ast_delete(params[i]);
3183 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3185 ast_expression *cexp;
3186 ast_value *cval, *tmp;
3189 ctx = parser_ctx(parser);
3191 if (!parser_next(parser)) {
3193 parseerror(parser, "expected array-size");
3197 cexp = parse_expression_leave(parser, true);
3199 if (!cexp || !ast_istype(cexp, ast_value)) {
3203 parseerror(parser, "expected array-size as constant positive integer");
3206 cval = (ast_value*)cexp;
3208 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3209 tmp->expression.next = (ast_expression*)var;
3212 if (cval->expression.vtype == TYPE_INTEGER)
3213 tmp->expression.count = cval->constval.vint;
3214 else if (cval->expression.vtype == TYPE_FLOAT)
3215 tmp->expression.count = cval->constval.vfloat;
3219 parseerror(parser, "array-size must be a positive integer constant");
3224 if (parser->tok != ']') {
3226 parseerror(parser, "expected ']' after array-size");
3229 if (!parser_next(parser)) {
3231 parseerror(parser, "error after parsing array size");
3237 /* Parse a complete typename.
3238 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3239 * but when parsing variables separated by comma
3240 * 'storebase' should point to where the base-type should be kept.
3241 * The base type makes up every bit of type information which comes *before* the
3244 * The following will be parsed in its entirety:
3246 * The 'basetype' in this case is 'void()'
3247 * and if there's a comma after it, say:
3249 * then the type-information 'void()' can be stored in 'storebase'
3251 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3253 ast_value *var, *tmp;
3256 const char *name = NULL;
3257 bool isfield = false;
3258 bool wasarray = false;
3259 size_t morefields = 0;
3261 ctx = parser_ctx(parser);
3263 /* types may start with a dot */
3264 if (parser->tok == '.') {
3266 /* if we parsed a dot we need a typename now */
3267 if (!parser_next(parser)) {
3268 parseerror(parser, "expected typename for field definition");
3272 /* Further dots are handled seperately because they won't be part of the
3275 while (parser->tok == '.') {
3277 if (!parser_next(parser)) {
3278 parseerror(parser, "expected typename for field definition");
3283 if (parser->tok == TOKEN_IDENT)
3284 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
3285 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
3286 parseerror(parser, "expected typename");
3291 /* generate the basic type value */
3292 if (cached_typedef) {
3293 var = ast_value_copy(cached_typedef);
3294 ast_value_set_name(var, "<type(from_def)>");
3296 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3298 for (; morefields; --morefields) {
3299 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
3300 tmp->expression.next = (ast_expression*)var;
3304 /* do not yet turn into a field - remember:
3305 * .void() foo; is a field too
3306 * .void()() foo; is a function
3310 if (!parser_next(parser)) {
3312 parseerror(parser, "parse error after typename");
3316 /* an opening paren now starts the parameter-list of a function
3317 * this is where original-QC has parameter lists.
3318 * We allow a single parameter list here.
3319 * Much like fteqcc we don't allow `float()() x`
3321 if (parser->tok == '(') {
3322 var = parse_parameter_list(parser, var);
3327 /* store the base if requested */
3329 *storebase = ast_value_copy(var);
3331 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3332 tmp->expression.next = (ast_expression*)*storebase;
3337 /* there may be a name now */
3338 if (parser->tok == TOKEN_IDENT) {
3339 name = util_strdup(parser_tokval(parser));
3341 if (!parser_next(parser)) {
3343 parseerror(parser, "error after variable or field declaration");
3348 /* now this may be an array */
3349 if (parser->tok == '[') {
3351 var = parse_arraysize(parser, var);
3356 /* This is the point where we can turn it into a field */
3358 /* turn it into a field if desired */
3359 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3360 tmp->expression.next = (ast_expression*)var;
3364 /* now there may be function parens again */
3365 if (parser->tok == '(' && opts_standard == COMPILER_QCC)
3366 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3367 if (parser->tok == '(' && wasarray)
3368 parseerror(parser, "arrays as part of a return type is not supported");
3369 while (parser->tok == '(') {
3370 var = parse_parameter_list(parser, var);
3379 /* finally name it */
3381 if (!ast_value_set_name(var, name)) {
3383 parseerror(parser, "internal error: failed to set name");
3386 /* free the name, ast_value_set_name duplicates */
3393 static bool parse_typedef(parser_t *parser)
3395 ast_value *typevar, *oldtype;
3396 ast_expression *old;
3398 typevar = parse_typename(parser, NULL, NULL);
3403 if ( (old = parser_find_var(parser, typevar->name)) ) {
3404 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
3405 " -> `%s` has been declared here: %s:%i",
3406 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
3407 ast_delete(typevar);
3411 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
3412 parseerror(parser, "type `%s` has already been declared here: %s:%i",
3413 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
3414 ast_delete(typevar);
3418 vec_push(parser->_typedefs, typevar);
3419 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
3421 if (parser->tok != ';') {
3422 parseerror(parser, "expected semicolon after typedef");
3425 if (!parser_next(parser)) {
3426 parseerror(parser, "parse error after typedef");
3433 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, bool is_const, ast_value *cached_typedef)
3437 ast_expression *old;
3441 ast_value *basetype = NULL;
3443 bool isparam = false;
3444 bool isvector = false;
3445 bool cleanvar = true;
3446 bool wasarray = false;
3450 /* get the first complete variable */
3451 var = parse_typename(parser, &basetype, cached_typedef);
3454 ast_delete(basetype);
3462 /* Part 0: finish the type */
3463 if (parser->tok == '(') {
3464 if (opts_standard == COMPILER_QCC)
3465 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3466 var = parse_parameter_list(parser, var);
3472 /* we only allow 1-dimensional arrays */
3473 if (parser->tok == '[') {
3475 var = parse_arraysize(parser, var);
3481 if (parser->tok == '(' && wasarray) {
3482 parseerror(parser, "arrays as part of a return type is not supported");
3483 /* we'll still parse the type completely for now */
3485 /* for functions returning functions */
3486 while (parser->tok == '(') {
3487 if (opts_standard == COMPILER_QCC)
3488 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3489 var = parse_parameter_list(parser, var);
3497 var->constant = true;
3500 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3501 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3502 * is then filled with the previous definition and the parameter-names replaced.
3505 /* Deal with end_sys_ vars */
3507 if (!strcmp(var->name, "end_sys_globals")) {
3508 parser->crc_globals = vec_size(parser->globals);
3511 else if (!strcmp(var->name, "end_sys_fields")) {
3512 parser->crc_fields = vec_size(parser->fields);
3515 if (was_end && var->expression.vtype == TYPE_FIELD) {
3516 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3517 "global '%s' hint should not be a field",
3518 parser_tokval(parser)))
3525 if (!nofields && var->expression.vtype == TYPE_FIELD)
3527 /* deal with field declarations */
3528 old = parser_find_field(parser, var->name);
3530 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3531 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3540 parseerror(parser, "field `%s` already declared here: %s:%i",
3541 var->name, ast_ctx(old).file, ast_ctx(old).line);
3546 if (opts_standard == COMPILER_QCC &&
3547 (old = parser_find_global(parser, var->name)))
3549 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3550 parseerror(parser, "field `%s` already declared here: %s:%i",
3551 var->name, ast_ctx(old).file, ast_ctx(old).line);
3558 /* deal with other globals */
3559 old = parser_find_global(parser, var->name);
3560 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3562 /* This is a function which had a prototype */
3563 if (!ast_istype(old, ast_value)) {
3564 parseerror(parser, "internal error: prototype is not an ast_value");
3568 proto = (ast_value*)old;
3569 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3570 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3572 ast_ctx(proto).file, ast_ctx(proto).line);
3576 /* we need the new parameter-names */
3577 for (i = 0; i < vec_size(proto->expression.params); ++i)
3578 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
3586 if (opts_standard == COMPILER_GMQCC) {
3587 parseerror(parser, "global `%s` already declared here: %s:%i",
3588 var->name, ast_ctx(old).file, ast_ctx(old).line);
3592 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
3593 "global `%s` already declared here: %s:%i",
3594 var->name, ast_ctx(old).file, ast_ctx(old).line))
3601 if (opts_standard == COMPILER_QCC &&
3602 (old = parser_find_field(parser, var->name)))
3604 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3605 parseerror(parser, "global `%s` already declared here: %s:%i",
3606 var->name, ast_ctx(old).file, ast_ctx(old).line);
3613 else /* it's not a global */
3615 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
3616 if (old && !isparam) {
3617 parseerror(parser, "local `%s` already declared here: %s:%i",
3618 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3622 old = parser_find_local(parser, var->name, 0, &isparam);
3623 if (old && isparam) {
3624 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
3625 "local `%s` is shadowing a parameter", var->name))
3627 parseerror(parser, "local `%s` already declared here: %s:%i",
3628 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3632 if (opts_standard != COMPILER_GMQCC) {
3641 * Create the global/local, and deal with vector types.
3644 if (var->expression.vtype == TYPE_VECTOR)
3646 else if (var->expression.vtype == TYPE_FIELD &&
3647 var->expression.next->expression.vtype == TYPE_VECTOR)
3651 if (!create_vector_members(var, me)) {
3658 /* deal with global variables, fields, functions */
3659 if (!nofields && var->expression.vtype == TYPE_FIELD) {
3660 vec_push(parser->fields, (ast_expression*)var);
3661 util_htset(parser->htfields, var->name, var);
3663 for (i = 0; i < 3; ++i) {
3664 vec_push(parser->fields, (ast_expression*)me[i]);
3665 util_htset(parser->htfields, me[i]->name, me[i]);
3670 vec_push(parser->globals, (ast_expression*)var);
3671 util_htset(parser->htglobals, var->name, var);
3673 for (i = 0; i < 3; ++i) {
3674 vec_push(parser->globals, (ast_expression*)me[i]);
3675 util_htset(parser->htglobals, me[i]->name, me[i]);
3680 vec_push(localblock->locals, var);
3681 parser_addlocal(parser, var->name, (ast_expression*)var);
3683 for (i = 0; i < 3; ++i) {
3684 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
3685 ast_block_collect(localblock, (ast_expression*)me[i]);
3691 me[0] = me[1] = me[2] = NULL;
3696 if (var->expression.vtype == TYPE_ARRAY) {
3698 snprintf(name, sizeof(name), "%s##SET", var->name);
3699 if (!parser_create_array_setter(parser, var, name))
3701 snprintf(name, sizeof(name), "%s##GET", var->name);
3702 if (!parser_create_array_getter(parser, var, var->expression.next, name))
3705 else if (!localblock && !nofields &&
3706 var->expression.vtype == TYPE_FIELD &&
3707 var->expression.next->expression.vtype == TYPE_ARRAY)
3710 ast_expression *telem;
3712 ast_value *array = (ast_value*)var->expression.next;
3714 if (!ast_istype(var->expression.next, ast_value)) {
3715 parseerror(parser, "internal error: field element type must be an ast_value");
3719 snprintf(name, sizeof(name), "%s##SETF", var->name);
3720 if (!parser_create_array_field_setter(parser, array, name))
3723 telem = ast_type_copy(ast_ctx(var), array->expression.next);
3724 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
3725 tfield->expression.next = telem;
3726 snprintf(name, sizeof(name), "%s##GETFP", var->name);
3727 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
3735 if (parser->tok == ';') {
3736 ast_delete(basetype);
3737 if (!parser_next(parser)) {
3738 parseerror(parser, "error after variable declaration");
3744 if (parser->tok == ',')
3747 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
3748 parseerror(parser, "missing comma or semicolon while parsing variables");
3752 if (localblock && opts_standard == COMPILER_QCC) {
3753 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
3754 "initializing expression turns variable `%s` into a constant in this standard",
3761 if (parser->tok != '{') {
3762 if (parser->tok != '=') {
3763 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
3767 if (!parser_next(parser)) {
3768 parseerror(parser, "error parsing initializer");
3772 else if (opts_standard == COMPILER_QCC) {
3773 parseerror(parser, "expected '=' before function body in this standard");
3776 if (parser->tok == '#') {
3777 ast_function *func = NULL;
3780 parseerror(parser, "cannot declare builtins within functions");
3783 if (var->expression.vtype != TYPE_FUNCTION) {
3784 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
3787 if (!parser_next(parser)) {
3788 parseerror(parser, "expected builtin number");
3791 if (parser->tok != TOKEN_INTCONST) {
3792 parseerror(parser, "builtin number must be an integer constant");
3795 if (parser_token(parser)->constval.i <= 0) {
3796 parseerror(parser, "builtin number must be an integer greater than zero");
3800 if (var->hasvalue) {
3801 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
3802 "builtin `%s` has already been defined\n"
3803 " -> previous declaration here: %s:%i",
3804 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
3808 func = ast_function_new(ast_ctx(var), var->name, var);
3810 parseerror(parser, "failed to allocate function for `%s`", var->name);
3813 vec_push(parser->functions, func);
3815 func->builtin = -parser_token(parser)->constval.i;
3818 if (!parser_next(parser)) {
3819 parseerror(parser, "expected comma or semicolon");
3821 ast_function_delete(func);
3822 var->constval.vfunc = NULL;
3826 else if (parser->tok == '{' || parser->tok == '[')
3829 parseerror(parser, "cannot declare functions within functions");
3833 if (!parse_function_body(parser, var))
3835 ast_delete(basetype);
3838 ast_expression *cexp;
3841 cexp = parse_expression_leave(parser, true);
3846 cval = (ast_value*)cexp;
3847 if (!ast_istype(cval, ast_value) || !cval->hasvalue)
3848 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
3851 if (opts_standard != COMPILER_GMQCC && !OPTS_FLAG(INITIALIZED_NONCONSTANTS))
3852 var->constant = true;
3853 var->hasvalue = true;
3854 if (cval->expression.vtype == TYPE_STRING)
3855 var->constval.vstring = parser_strdup(cval->constval.vstring);
3857 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
3861 shunt sy = { NULL, NULL };
3862 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
3863 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
3864 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
3865 if (!parser_sy_pop(parser, &sy))
3868 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
3869 parseerror(parser, "internal error: leaked operands");
3870 ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out);
3878 if (parser->tok == ',') {
3879 if (!parser_next(parser)) {
3880 parseerror(parser, "expected another variable");
3884 if (parser->tok != TOKEN_IDENT) {
3885 parseerror(parser, "expected another variable");
3888 var = ast_value_copy(basetype);
3890 ast_value_set_name(var, parser_tokval(parser));
3891 if (!parser_next(parser)) {
3892 parseerror(parser, "error parsing variable declaration");
3898 if (parser->tok != ';') {
3899 parseerror(parser, "missing semicolon after variables");
3903 if (!parser_next(parser)) {
3904 parseerror(parser, "parse error after variable declaration");
3908 ast_delete(basetype);
3912 if (cleanvar && var)
3914 ast_delete(basetype);
3918 ast_delete(basetype);
3919 if (cleanvar && var)
3921 if (me[0]) ast_member_delete(me[0]);
3922 if (me[1]) ast_member_delete(me[1]);
3923 if (me[2]) ast_member_delete(me[2]);
3927 static bool parser_global_statement(parser_t *parser)
3929 ast_value *istype = NULL;
3930 if (parser->tok == TOKEN_IDENT)
3931 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
3933 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3935 return parse_variable(parser, NULL, false, false, istype);
3937 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "var"))
3939 if (!strcmp(parser_tokval(parser), "var")) {
3940 if (!parser_next(parser)) {
3941 parseerror(parser, "expected variable declaration after 'var'");
3944 return parse_variable(parser, NULL, true, false, NULL);
3947 else if (parser->tok == TOKEN_KEYWORD)
3949 if (!strcmp(parser_tokval(parser), "const")) {
3950 if (!parser_next(parser)) {
3951 parseerror(parser, "expected variable declaration after 'const'");
3954 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "var")) {
3955 (void)!parsewarning(parser, WARN_CONST_VAR, "ignoring `var` after const qualifier");
3956 if (!parser_next(parser)) {
3957 parseerror(parser, "expected variable declaration after 'const var'");
3961 return parse_variable(parser, NULL, true, true, NULL);
3963 else if (!strcmp(parser_tokval(parser), "typedef")) {
3964 if (!parser_next(parser)) {
3965 parseerror(parser, "expected type definition after 'typedef'");
3968 return parse_typedef(parser);
3970 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
3973 else if (parser->tok == '$')
3975 if (!parser_next(parser)) {
3976 parseerror(parser, "parse error");
3982 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
3988 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
3990 return util_crc16(old, str, strlen(str));
3993 static void progdefs_crc_file(const char *str)
3995 /* write to progdefs.h here */
3999 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
4001 old = progdefs_crc_sum(old, str);
4002 progdefs_crc_file(str);
4006 static void generate_checksum(parser_t *parser)
4008 uint16_t crc = 0xFFFF;
4012 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
4013 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
4015 progdefs_crc_file("\tint\tpad;\n");
4016 progdefs_crc_file("\tint\tofs_return[3];\n");
4017 progdefs_crc_file("\tint\tofs_parm0[3];\n");
4018 progdefs_crc_file("\tint\tofs_parm1[3];\n");
4019 progdefs_crc_file("\tint\tofs_parm2[3];\n");
4020 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4021 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4022 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4023 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4024 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4026 for (i = 0; i < parser->crc_globals; ++i) {
4027 if (!ast_istype(parser->globals[i], ast_value))
4029 value = (ast_value*)(parser->globals[i]);
4030 switch (value->expression.vtype) {
4031 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4032 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4033 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4034 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4036 crc = progdefs_crc_both(crc, "\tint\t");
4039 crc = progdefs_crc_both(crc, value->name);
4040 crc = progdefs_crc_both(crc, ";\n");
4042 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4043 for (i = 0; i < parser->crc_fields; ++i) {
4044 if (!ast_istype(parser->fields[i], ast_value))
4046 value = (ast_value*)(parser->fields[i]);
4047 switch (value->expression.next->expression.vtype) {
4048 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4049 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4050 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4051 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4053 crc = progdefs_crc_both(crc, "\tint\t");
4056 crc = progdefs_crc_both(crc, value->name);
4057 crc = progdefs_crc_both(crc, ";\n");
4059 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4064 static parser_t *parser;
4070 parser = (parser_t*)mem_a(sizeof(parser_t));
4074 memset(parser, 0, sizeof(*parser));
4076 for (i = 0; i < operator_count; ++i) {
4077 if (operators[i].id == opid1('=')) {
4078 parser->assign_op = operators+i;
4082 if (!parser->assign_op) {
4083 printf("internal error: initializing parser: failed to find assign operator\n");
4088 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4089 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4090 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4091 vec_push(parser->_blocktypedefs, 0);
4095 bool parser_compile()
4097 /* initial lexer/parser state */
4098 parser->lex->flags.noops = true;
4100 if (parser_next(parser))
4102 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4104 if (!parser_global_statement(parser)) {
4105 if (parser->tok == TOKEN_EOF)
4106 parseerror(parser, "unexpected eof");
4107 else if (!parser->errors)
4108 parseerror(parser, "there have been errors, bailing out");
4109 lex_close(parser->lex);
4115 parseerror(parser, "parse error");
4116 lex_close(parser->lex);
4121 lex_close(parser->lex);
4124 return !parser->errors;
4127 bool parser_compile_file(const char *filename)
4129 parser->lex = lex_open(filename);
4131 con_err("failed to open file \"%s\"\n", filename);
4134 return parser_compile();
4137 bool parser_compile_string_len(const char *name, const char *str, size_t len)
4139 parser->lex = lex_open_string(str, len, name);
4141 con_err("failed to create lexer for string \"%s\"\n", name);
4144 return parser_compile();
4147 bool parser_compile_string(const char *name, const char *str)
4149 parser->lex = lex_open_string(str, strlen(str), name);
4151 con_err("failed to create lexer for string \"%s\"\n", name);
4154 return parser_compile();
4157 void parser_cleanup()
4160 for (i = 0; i < vec_size(parser->accessors); ++i) {
4161 ast_delete(parser->accessors[i]->constval.vfunc);
4162 parser->accessors[i]->constval.vfunc = NULL;
4163 ast_delete(parser->accessors[i]);
4165 for (i = 0; i < vec_size(parser->functions); ++i) {
4166 ast_delete(parser->functions[i]);
4168 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4169 ast_delete(parser->imm_vector[i]);
4171 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4172 ast_delete(parser->imm_string[i]);
4174 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4175 ast_delete(parser->imm_float[i]);
4177 for (i = 0; i < vec_size(parser->fields); ++i) {
4178 ast_delete(parser->fields[i]);
4180 for (i = 0; i < vec_size(parser->globals); ++i) {
4181 ast_delete(parser->globals[i]);
4183 vec_free(parser->accessors);
4184 vec_free(parser->functions);
4185 vec_free(parser->imm_vector);
4186 vec_free(parser->imm_string);
4187 vec_free(parser->imm_float);
4188 vec_free(parser->globals);
4189 vec_free(parser->fields);
4191 for (i = 0; i < vec_size(parser->variables); ++i)
4192 util_htdel(parser->variables[i]);
4193 vec_free(parser->variables);
4194 vec_free(parser->_blocklocals);
4195 vec_free(parser->_locals);
4197 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4198 ast_delete(parser->_typedefs[i]);
4199 vec_free(parser->_typedefs);
4200 for (i = 0; i < vec_size(parser->typedefs); ++i)
4201 util_htdel(parser->typedefs[i]);
4202 vec_free(parser->typedefs);
4203 vec_free(parser->_blocktypedefs);
4208 bool parser_finish(const char *output)
4214 if (!parser->errors)
4216 ir = ir_builder_new("gmqcc_out");
4218 con_out("failed to allocate builder\n");
4222 for (i = 0; i < vec_size(parser->fields); ++i) {
4225 if (!ast_istype(parser->fields[i], ast_value))
4227 field = (ast_value*)parser->fields[i];
4228 hasvalue = field->hasvalue;
4229 field->hasvalue = false;
4230 if (!ast_global_codegen((ast_value*)field, ir, true)) {
4231 con_out("failed to generate field %s\n", field->name);
4232 ir_builder_delete(ir);
4237 ast_expression *subtype;
4238 field->hasvalue = true;
4239 subtype = field->expression.next;
4240 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
4241 if (subtype->expression.vtype == TYPE_FIELD)
4242 ifld->fieldtype = subtype->expression.next->expression.vtype;
4243 else if (subtype->expression.vtype == TYPE_FUNCTION)
4244 ifld->outtype = subtype->expression.next->expression.vtype;
4245 (void)!ir_value_set_field(field->ir_v, ifld);
4248 for (i = 0; i < vec_size(parser->globals); ++i) {
4250 if (!ast_istype(parser->globals[i], ast_value))
4252 asvalue = (ast_value*)(parser->globals[i]);
4253 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
4254 if (strcmp(asvalue->name, "end_sys_globals") &&
4255 strcmp(asvalue->name, "end_sys_fields"))
4257 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
4258 "unused global: `%s`", asvalue->name);
4261 if (!ast_global_codegen(asvalue, ir, false)) {
4262 con_out("failed to generate global %s\n", asvalue->name);
4263 ir_builder_delete(ir);
4267 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4268 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
4269 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
4270 ir_builder_delete(ir);
4274 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4275 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
4276 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
4277 ir_builder_delete(ir);
4281 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4282 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
4283 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
4284 ir_builder_delete(ir);
4288 for (i = 0; i < vec_size(parser->globals); ++i) {
4290 if (!ast_istype(parser->globals[i], ast_value))
4292 asvalue = (ast_value*)(parser->globals[i]);
4293 if (asvalue->setter) {
4294 if (!ast_global_codegen(asvalue->setter, ir, false) ||
4295 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
4296 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
4298 printf("failed to generate setter for %s\n", asvalue->name);
4299 ir_builder_delete(ir);
4303 if (asvalue->getter) {
4304 if (!ast_global_codegen(asvalue->getter, ir, false) ||
4305 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
4306 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
4308 printf("failed to generate getter for %s\n", asvalue->name);
4309 ir_builder_delete(ir);
4314 for (i = 0; i < vec_size(parser->fields); ++i) {
4316 asvalue = (ast_value*)(parser->fields[i]->expression.next);
4318 if (!ast_istype((ast_expression*)asvalue, ast_value))
4320 if (asvalue->expression.vtype != TYPE_ARRAY)
4322 if (asvalue->setter) {
4323 if (!ast_global_codegen(asvalue->setter, ir, false) ||
4324 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
4325 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
4327 printf("failed to generate setter for %s\n", asvalue->name);
4328 ir_builder_delete(ir);
4332 if (asvalue->getter) {
4333 if (!ast_global_codegen(asvalue->getter, ir, false) ||
4334 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
4335 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
4337 printf("failed to generate getter for %s\n", asvalue->name);
4338 ir_builder_delete(ir);
4343 for (i = 0; i < vec_size(parser->functions); ++i) {
4344 if (!ast_function_codegen(parser->functions[i], ir)) {
4345 con_out("failed to generate function %s\n", parser->functions[i]->name);
4346 ir_builder_delete(ir);
4351 ir_builder_dump(ir, con_out);
4352 for (i = 0; i < vec_size(parser->functions); ++i) {
4353 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4354 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4355 ir_builder_delete(ir);
4362 ir_builder_dump(ir, con_out);
4364 generate_checksum(parser);
4366 if (!ir_builder_generate(ir, output)) {
4367 con_out("*** failed to generate output file\n");
4368 ir_builder_delete(ir);
4373 ir_builder_delete(ir);
4377 con_out("*** there were compile errors\n");