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 /* beginning of locals */
30 #define PARSER_HT_LOCALS 2
32 #define PARSER_HT_SIZE 1024
33 #define TYPEDEF_HT_SIZE 16
39 ast_expression **globals;
40 ast_expression **fields;
41 ast_function **functions;
42 ast_value **imm_float;
43 ast_value **imm_string;
44 ast_value **imm_vector;
47 /* must be deleted first, they reference immediates and values */
48 ast_value **accessors;
50 ast_value *imm_float_zero;
51 ast_value *imm_float_one;
52 ast_value *imm_vector_zero;
57 ast_function *function;
59 /* All the labels the function defined...
60 * Should they be in ast_function instead?
65 /* A list of hashtables for each scope */
71 /* not to be used directly, we use the hash table */
72 ast_expression **_locals;
74 ast_value **_typedefs;
75 size_t *_blocktypedefs;
80 /* we store the '=' operator info */
81 const oper_info *assign_op;
83 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
84 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
85 * anything else: type error
89 /* Keep track of our ternary vs parenthesis nesting state.
90 * If we reach a 'comma' operator in a ternary without a paren,
91 * we shall trigger -Wternary-precedence.
93 enum { POT_PAREN, POT_TERNARY1, POT_TERNARY2 } *pot;
99 static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10;
101 static void parser_enterblock(parser_t *parser);
102 static bool parser_leaveblock(parser_t *parser);
103 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
104 static bool parse_typedef(parser_t *parser);
105 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn);
106 static ast_block* parse_block(parser_t *parser);
107 static bool parse_block_into(parser_t *parser, ast_block *block);
108 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
109 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
110 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
111 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
113 static void parseerror(parser_t *parser, const char *fmt, ...)
120 con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap);
124 /* returns true if it counts as an error */
125 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
130 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
135 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
140 r = vcompile_warning(ctx, warntype, fmt, ap);
145 /**********************************************************************
146 * some maths used for constant folding
149 vector vec3_add(vector a, vector b)
158 vector vec3_sub(vector a, vector b)
167 qcfloat vec3_mulvv(vector a, vector b)
169 return (a.x * b.x + a.y * b.y + a.z * b.z);
172 vector vec3_mulvf(vector a, float b)
181 /**********************************************************************
185 bool parser_next(parser_t *parser)
187 /* lex_do kills the previous token */
188 parser->tok = lex_do(parser->lex);
189 if (parser->tok == TOKEN_EOF)
191 if (parser->tok >= TOKEN_ERROR) {
192 parseerror(parser, "lex error");
198 #define parser_tokval(p) ((p)->lex->tok.value)
199 #define parser_token(p) (&((p)->lex->tok))
200 #define parser_ctx(p) ((p)->lex->tok.ctx)
202 static ast_value* parser_const_float(parser_t *parser, double d)
206 for (i = 0; i < vec_size(parser->imm_float); ++i) {
207 const double compare = parser->imm_float[i]->constval.vfloat;
208 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
209 return parser->imm_float[i];
211 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
213 out->hasvalue = true;
214 out->constval.vfloat = d;
215 vec_push(parser->imm_float, out);
219 static ast_value* parser_const_float_0(parser_t *parser)
221 if (!parser->imm_float_zero)
222 parser->imm_float_zero = parser_const_float(parser, 0);
223 return parser->imm_float_zero;
226 static ast_value* parser_const_float_1(parser_t *parser)
228 if (!parser->imm_float_one)
229 parser->imm_float_one = parser_const_float(parser, 1);
230 return parser->imm_float_one;
233 static char *parser_strdup(const char *str)
236 /* actually dup empty strings */
237 char *out = mem_a(1);
241 return util_strdup(str);
244 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
248 for (i = 0; i < vec_size(parser->imm_string); ++i) {
249 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
250 return parser->imm_string[i];
254 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
255 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
257 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
259 out->hasvalue = true;
260 out->constval.vstring = parser_strdup(str);
261 vec_push(parser->imm_string, out);
265 static ast_value* parser_const_vector(parser_t *parser, vector v)
269 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
270 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
271 return parser->imm_vector[i];
273 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
275 out->hasvalue = true;
276 out->constval.vvec = v;
277 vec_push(parser->imm_vector, out);
281 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
287 return parser_const_vector(parser, v);
290 static ast_value* parser_const_vector_0(parser_t *parser)
292 if (!parser->imm_vector_zero)
293 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
294 return parser->imm_vector_zero;
297 static ast_expression* parser_find_field(parser_t *parser, const char *name)
299 return util_htget(parser->htfields, name);
302 static ast_expression* parser_find_global(parser_t *parser, const char *name)
304 return util_htget(parser->htglobals, name);
307 static ast_expression* parser_find_param(parser_t *parser, const char *name)
311 if (!parser->function)
313 fun = parser->function->vtype;
314 for (i = 0; i < vec_size(fun->expression.params); ++i) {
315 if (!strcmp(fun->expression.params[i]->name, name))
316 return (ast_expression*)(fun->expression.params[i]);
321 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
326 hash = util_hthash(parser->htglobals, name);
329 for (i = vec_size(parser->variables); i > upto;) {
331 if ( (e = util_htgeth(parser->variables[i], name, hash)) )
335 return parser_find_param(parser, name);
338 static ast_expression* parser_find_var(parser_t *parser, const char *name)
342 v = parser_find_local(parser, name, 0, &dummy);
343 if (!v) v = parser_find_global(parser, name);
347 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
351 hash = util_hthash(parser->typedefs[0], name);
353 for (i = vec_size(parser->typedefs); i > upto;) {
355 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
363 size_t etype; /* 0 = expression, others are operators */
367 ast_block *block; /* for commas and function calls */
376 #define SY_PAREN_EXPR '('
377 #define SY_PAREN_FUNC 'f'
378 #define SY_PAREN_INDEX '['
379 #define SY_PAREN_TERNARY '?'
381 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
392 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
396 e.out = (ast_expression*)v;
403 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
405 e.etype = 1 + (op - operators);
414 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
426 # define DEBUGSHUNTDO(x) x
428 # define DEBUGSHUNTDO(x)
431 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
432 * so we need to rotate it to become ent.(foo[n]).
434 static bool rotate_entfield_array_index_nodes(ast_expression **out)
436 ast_array_index *index;
437 ast_entfield *entfield;
441 ast_expression *entity;
443 lex_ctx ctx = ast_ctx(*out);
445 if (!ast_istype(*out, ast_array_index))
447 index = (ast_array_index*)*out;
449 if (!ast_istype(index->array, ast_entfield))
451 entfield = (ast_entfield*)index->array;
453 if (!ast_istype(entfield->field, ast_value))
455 field = (ast_value*)entfield->field;
458 entity = entfield->entity;
462 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
463 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
464 *out = (ast_expression*)entfield;
469 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
471 switch (v->expression.vtype) {
473 return !!v->constval.vfloat;
475 return !!v->constval.vint;
477 if (OPTS_FLAG(CORRECT_LOGIC))
478 return v->constval.vvec.x &&
479 v->constval.vvec.y &&
482 return !!(v->constval.vvec.x);
484 if (!v->constval.vstring)
486 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
488 return !!v->constval.vstring[0];
490 compile_error(ctx, "internal error: immediate_is_true on invalid type");
491 return !!v->constval.vfunc;
495 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
499 ast_expression *out = NULL;
500 ast_expression *exprs[3];
501 ast_block *blocks[3];
502 ast_value *asvalue[3];
503 ast_binstore *asbinstore;
504 size_t i, assignop, addop, subop;
505 qcint generated_op = 0;
510 if (!vec_size(sy->ops)) {
511 parseerror(parser, "internal error: missing operator");
515 if (vec_last(sy->ops).paren) {
516 parseerror(parser, "unmatched parenthesis");
520 op = &operators[vec_last(sy->ops).etype - 1];
521 ctx = vec_last(sy->ops).ctx;
523 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
525 if (vec_size(sy->out) < op->operands) {
526 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
527 op->op, (int)op->id);
531 vec_shrinkby(sy->ops, 1);
533 /* op(:?) has no input and no output */
537 vec_shrinkby(sy->out, op->operands);
538 for (i = 0; i < op->operands; ++i) {
539 exprs[i] = sy->out[vec_size(sy->out)+i].out;
540 blocks[i] = sy->out[vec_size(sy->out)+i].block;
541 asvalue[i] = (ast_value*)exprs[i];
544 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
545 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
549 #define NotSameType(T) \
550 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
551 exprs[0]->expression.vtype != T)
552 #define CanConstFold1(A) \
553 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
554 (A)->expression.vtype != TYPE_FUNCTION)
555 #define CanConstFold(A, B) \
556 (CanConstFold1(A) && CanConstFold1(B))
557 #define ConstV(i) (asvalue[(i)]->constval.vvec)
558 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
559 #define ConstS(i) (asvalue[(i)]->constval.vstring)
563 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
567 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
568 if (exprs[1]->expression.vtype != TYPE_FIELD) {
569 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
572 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
574 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
575 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
579 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
585 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
586 !(exprs[0]->expression.vtype == TYPE_FIELD &&
587 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
589 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
590 parseerror(parser, "cannot index value of type %s", ty1);
593 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
594 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
595 parseerror(parser, "index must be of type float, not %s", ty1);
598 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
599 if (rotate_entfield_array_index_nodes(&out))
602 /* This is not broken in fteqcc anymore */
603 if (opts.standard != COMPILER_GMQCC) {
604 /* this error doesn't need to make us bail out */
605 (void)!parsewarning(parser, WARN_EXTENSIONS,
606 "accessing array-field members of an entity without parenthesis\n"
607 " -> this is an extension from -std=gmqcc");
615 if (!ast_block_add_expr(blocks[0], exprs[1]))
618 blocks[0] = ast_block_new(ctx);
619 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
620 !ast_block_add_expr(blocks[0], exprs[1]))
625 if (!ast_block_set_type(blocks[0], exprs[1]))
628 vec_push(sy->out, syblock(ctx, blocks[0]));
635 switch (exprs[0]->expression.vtype) {
637 if (CanConstFold1(exprs[0]))
638 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
640 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
641 (ast_expression*)parser_const_float_0(parser),
645 if (CanConstFold1(exprs[0]))
646 out = (ast_expression*)parser_const_vector_f(parser,
647 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
649 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
650 (ast_expression*)parser_const_vector_0(parser),
654 parseerror(parser, "invalid types used in expression: cannot negate type %s",
655 type_name[exprs[0]->expression.vtype]);
661 switch (exprs[0]->expression.vtype) {
663 if (CanConstFold1(exprs[0]))
664 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
666 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
669 if (CanConstFold1(exprs[0]))
670 out = (ast_expression*)parser_const_float(parser,
671 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
673 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
676 if (CanConstFold1(exprs[0])) {
677 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
678 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
680 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
682 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
683 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
685 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
688 /* we don't constant-fold NOT for these types */
690 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
693 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
696 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
697 type_name[exprs[0]->expression.vtype]);
703 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
704 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
706 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
707 type_name[exprs[0]->expression.vtype],
708 type_name[exprs[1]->expression.vtype]);
711 switch (exprs[0]->expression.vtype) {
713 if (CanConstFold(exprs[0], exprs[1]))
715 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
718 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
721 if (CanConstFold(exprs[0], exprs[1]))
722 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
724 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
727 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
728 type_name[exprs[0]->expression.vtype],
729 type_name[exprs[1]->expression.vtype]);
734 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
735 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
737 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
738 type_name[exprs[1]->expression.vtype],
739 type_name[exprs[0]->expression.vtype]);
742 switch (exprs[0]->expression.vtype) {
744 if (CanConstFold(exprs[0], exprs[1]))
745 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
747 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
750 if (CanConstFold(exprs[0], exprs[1]))
751 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
753 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
756 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
757 type_name[exprs[1]->expression.vtype],
758 type_name[exprs[0]->expression.vtype]);
763 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
764 exprs[0]->expression.vtype != TYPE_VECTOR &&
765 exprs[0]->expression.vtype != TYPE_FLOAT &&
766 exprs[1]->expression.vtype != TYPE_VECTOR &&
767 exprs[1]->expression.vtype != TYPE_FLOAT)
769 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
770 type_name[exprs[1]->expression.vtype],
771 type_name[exprs[0]->expression.vtype]);
774 switch (exprs[0]->expression.vtype) {
776 if (exprs[1]->expression.vtype == TYPE_VECTOR)
778 if (CanConstFold(exprs[0], exprs[1]))
779 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
781 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
785 if (CanConstFold(exprs[0], exprs[1]))
786 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
788 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
792 if (exprs[1]->expression.vtype == TYPE_FLOAT)
794 if (CanConstFold(exprs[0], exprs[1]))
795 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
797 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
801 if (CanConstFold(exprs[0], exprs[1]))
802 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
804 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
808 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
809 type_name[exprs[1]->expression.vtype],
810 type_name[exprs[0]->expression.vtype]);
815 if (NotSameType(TYPE_FLOAT)) {
816 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
817 type_name[exprs[0]->expression.vtype],
818 type_name[exprs[1]->expression.vtype]);
821 if (CanConstFold(exprs[0], exprs[1]))
822 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
824 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
828 parseerror(parser, "qc does not have a modulo operator");
832 if (NotSameType(TYPE_FLOAT)) {
833 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
834 type_name[exprs[0]->expression.vtype],
835 type_name[exprs[1]->expression.vtype]);
838 if (CanConstFold(exprs[0], exprs[1]))
839 out = (ast_expression*)parser_const_float(parser,
840 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
841 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
843 out = (ast_expression*)ast_binary_new(ctx,
844 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
848 parseerror(parser, "TODO: bitxor");
853 case opid3('<','<','='):
854 case opid3('>','>','='):
855 parseerror(parser, "TODO: shifts");
859 generated_op += 1; /* INSTR_OR */
861 generated_op += INSTR_AND;
863 if (NotSameType(TYPE_FLOAT)) {
864 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
865 type_name[exprs[0]->expression.vtype],
866 type_name[exprs[1]->expression.vtype]);
867 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
868 parseerror(parser, "TODO: optional early out");
872 if (CanConstFold(exprs[0], exprs[1]))
874 if (OPTS_FLAG(PERL_LOGIC)) {
875 if (immediate_is_true(ctx, asvalue[0]))
879 out = (ast_expression*)parser_const_float(parser,
880 ( (generated_op == INSTR_OR)
881 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
882 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
887 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
888 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
889 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
890 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
893 if (OPTS_FLAG(CORRECT_LOGIC)) {
894 /* non-floats need to be NOTed */
895 for (i = 0; i < 2; ++i) {
896 if (exprs[i]->expression.vtype != TYPE_FLOAT) {
897 if (type_not_instr[exprs[i]->expression.vtype] == AINSTR_END) {
898 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
899 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
900 parseerror(parser, "invalid types for logical operation with -fcorrect-logic: %s and %s", ty1, ty2);
903 out = (ast_expression*)ast_unary_new(ctx, type_not_instr[exprs[i]->expression.vtype], exprs[i]);
905 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
907 exprs[i] = out; out = NULL;
908 if (OPTS_FLAG(PERL_LOGIC)) {
909 /* here we want to keep the right expressions' type */
915 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
920 if (vec_last(parser->pot) != POT_TERNARY2) {
921 parseerror(parser, "mismatched parenthesis/ternary");
924 vec_pop(parser->pot);
925 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
926 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
927 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
928 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
931 if (CanConstFold1(exprs[0]))
932 out = (ConstF(0) ? exprs[1] : exprs[2]);
934 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
938 generated_op += 1; /* INSTR_GT */
940 generated_op += 1; /* INSTR_LT */
941 case opid2('>', '='):
942 generated_op += 1; /* INSTR_GE */
943 case opid2('<', '='):
944 generated_op += INSTR_LE;
945 if (NotSameType(TYPE_FLOAT)) {
946 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
947 type_name[exprs[0]->expression.vtype],
948 type_name[exprs[1]->expression.vtype]);
951 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
953 case opid2('!', '='):
954 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
955 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
956 type_name[exprs[0]->expression.vtype],
957 type_name[exprs[1]->expression.vtype]);
960 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
962 case opid2('=', '='):
963 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
964 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
965 type_name[exprs[0]->expression.vtype],
966 type_name[exprs[1]->expression.vtype]);
969 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
973 if (ast_istype(exprs[0], ast_entfield)) {
974 ast_expression *field = ((ast_entfield*)exprs[0])->field;
975 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
976 exprs[0]->expression.vtype == TYPE_FIELD &&
977 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
979 assignop = type_storep_instr[TYPE_VECTOR];
982 assignop = type_storep_instr[exprs[0]->expression.vtype];
983 if (assignop == AINSTR_END ||
984 !ast_compare_type(field->expression.next, exprs[1]))
986 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
987 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
988 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
989 field->expression.next->expression.vtype == TYPE_FUNCTION &&
990 exprs[1]->expression.vtype == TYPE_FUNCTION)
992 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
993 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
999 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1004 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1005 exprs[0]->expression.vtype == TYPE_FIELD &&
1006 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1008 assignop = type_store_instr[TYPE_VECTOR];
1011 assignop = type_store_instr[exprs[0]->expression.vtype];
1014 if (assignop == AINSTR_END) {
1015 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1016 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1017 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1019 else if (!ast_compare_type(exprs[0], exprs[1])) {
1020 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1021 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1022 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1023 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1024 exprs[1]->expression.vtype == TYPE_FUNCTION)
1026 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1027 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
1033 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1036 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1037 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1039 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1041 case opid3('+','+','P'):
1042 case opid3('-','-','P'):
1044 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1045 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1046 parseerror(parser, "invalid type for prefix increment: %s", ty1);
1049 if (op->id == opid3('+','+','P'))
1050 addop = INSTR_ADD_F;
1052 addop = INSTR_SUB_F;
1053 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1054 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1056 if (ast_istype(exprs[0], ast_entfield)) {
1057 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1059 (ast_expression*)parser_const_float_1(parser));
1061 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1063 (ast_expression*)parser_const_float_1(parser));
1066 case opid3('S','+','+'):
1067 case opid3('S','-','-'):
1069 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1070 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1071 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1074 if (op->id == opid3('S','+','+')) {
1075 addop = INSTR_ADD_F;
1076 subop = INSTR_SUB_F;
1078 addop = INSTR_SUB_F;
1079 subop = INSTR_ADD_F;
1081 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1082 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1084 if (ast_istype(exprs[0], ast_entfield)) {
1085 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1087 (ast_expression*)parser_const_float_1(parser));
1089 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1091 (ast_expression*)parser_const_float_1(parser));
1095 out = (ast_expression*)ast_binary_new(ctx, subop,
1097 (ast_expression*)parser_const_float_1(parser));
1099 case opid2('+','='):
1100 case opid2('-','='):
1101 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1102 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1104 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1105 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1106 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1110 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1111 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1113 if (ast_istype(exprs[0], ast_entfield))
1114 assignop = type_storep_instr[exprs[0]->expression.vtype];
1116 assignop = type_store_instr[exprs[0]->expression.vtype];
1117 switch (exprs[0]->expression.vtype) {
1119 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1120 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1121 exprs[0], exprs[1]);
1124 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1125 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1126 exprs[0], exprs[1]);
1129 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1130 type_name[exprs[0]->expression.vtype],
1131 type_name[exprs[1]->expression.vtype]);
1135 case opid2('*','='):
1136 case opid2('/','='):
1137 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1138 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1139 exprs[0]->expression.vtype == TYPE_VECTOR))
1141 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1142 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1143 parseerror(parser, "invalid types used in expression: %s and %s",
1147 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1148 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1150 if (ast_istype(exprs[0], ast_entfield))
1151 assignop = type_storep_instr[exprs[0]->expression.vtype];
1153 assignop = type_store_instr[exprs[0]->expression.vtype];
1154 switch (exprs[0]->expression.vtype) {
1156 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1157 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1158 exprs[0], exprs[1]);
1161 if (op->id == opid2('*','=')) {
1162 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1163 exprs[0], exprs[1]);
1165 /* there's no DIV_VF */
1166 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1167 (ast_expression*)parser_const_float_1(parser),
1171 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1176 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1177 type_name[exprs[0]->expression.vtype],
1178 type_name[exprs[1]->expression.vtype]);
1182 case opid2('&','='):
1183 case opid2('|','='):
1184 if (NotSameType(TYPE_FLOAT)) {
1185 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1186 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1187 parseerror(parser, "invalid types used in expression: %s and %s",
1191 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1192 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1194 if (ast_istype(exprs[0], ast_entfield))
1195 assignop = type_storep_instr[exprs[0]->expression.vtype];
1197 assignop = type_store_instr[exprs[0]->expression.vtype];
1198 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1199 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1200 exprs[0], exprs[1]);
1202 case opid3('&','~','='):
1203 /* This is like: a &= ~(b);
1204 * But QC has no bitwise-not, so we implement it as
1207 if (NotSameType(TYPE_FLOAT)) {
1208 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1209 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1210 parseerror(parser, "invalid types used in expression: %s and %s",
1214 if (ast_istype(exprs[0], ast_entfield))
1215 assignop = type_storep_instr[exprs[0]->expression.vtype];
1217 assignop = type_store_instr[exprs[0]->expression.vtype];
1218 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1221 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1222 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1224 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1225 asbinstore->keep_dest = true;
1226 out = (ast_expression*)asbinstore;
1232 parseerror(parser, "failed to apply operand %s", op->op);
1236 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1237 vec_push(sy->out, syexp(ctx, out));
1241 static bool parser_close_call(parser_t *parser, shunt *sy)
1243 /* was a function call */
1244 ast_expression *fun;
1250 vec_shrinkby(sy->ops, 1);
1251 fid = sy->ops[vec_size(sy->ops)].off;
1253 /* out[fid] is the function
1254 * everything above is parameters...
1255 * 0 params = nothing
1256 * 1 params = ast_expression
1260 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1261 parseerror(parser, "internal error: function call needs function and parameter list...");
1265 fun = sy->out[fid].out;
1267 if (fun == intrinsic_debug_typestring) {
1269 if (fid+2 != vec_size(sy->out) ||
1270 vec_last(sy->out).block)
1272 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1275 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1276 ast_unref(vec_last(sy->out).out);
1277 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1278 (ast_expression*)parser_const_string(parser, ty, false));
1279 vec_shrinkby(sy->out, 1);
1283 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1285 parseerror(parser, "internal error: failed to create ast_call node");
1289 if (fid+1 == vec_size(sy->out)) {
1292 } else if (fid+2 == vec_size(sy->out)) {
1294 vec_shrinkby(sy->out, 1);
1295 params = sy->out[vec_size(sy->out)].block;
1299 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1301 paramcount = vec_size(params->exprs);
1302 call->params = params->exprs;
1303 params->exprs = NULL;
1306 if (!ast_call_check_types(call))
1309 parseerror(parser, "invalid function call");
1313 /* overwrite fid, the function, with a call */
1314 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1316 if (fun->expression.vtype != TYPE_FUNCTION) {
1317 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1321 if (!fun->expression.next) {
1322 parseerror(parser, "could not determine function return type");
1325 if (vec_size(fun->expression.params) != paramcount &&
1326 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1327 vec_size(fun->expression.params) < paramcount))
1330 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1332 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1333 if (opts.standard == COMPILER_GMQCC)
1336 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1337 " -> `%s` has been declared here: %s:%i",
1338 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1339 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1341 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1342 " -> it has been declared here: %s:%i",
1343 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1344 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1350 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1351 "too %s parameters for call to %s: expected %i, got %i\n"
1352 " -> `%s` has been declared here: %s:%i",
1353 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1354 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1356 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1357 "too %s parameters for function call: expected %i, got %i\n"
1358 " -> it has been declared here: %s:%i",
1359 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1360 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1368 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1370 if (!vec_size(sy->ops)) {
1371 parseerror(parser, "unmatched closing paren");
1374 /* this would for bit a + (x) because there are no operators inside (x)
1375 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1376 parseerror(parser, "empty parenthesis expression");
1380 while (vec_size(sy->ops)) {
1381 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1382 if (!parser_close_call(parser, sy))
1386 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1387 vec_shrinkby(sy->ops, 1);
1388 return !functions_only;
1390 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1393 /* pop off the parenthesis */
1394 vec_shrinkby(sy->ops, 1);
1395 /* then apply the index operator */
1396 if (!parser_sy_apply_operator(parser, sy))
1400 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1403 if (vec_last(parser->pot) != POT_TERNARY1) {
1404 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1407 vec_last(parser->pot) = POT_TERNARY2;
1408 /* pop off the parenthesis */
1409 vec_shrinkby(sy->ops, 1);
1412 if (!parser_sy_apply_operator(parser, sy))
1418 static void parser_reclassify_token(parser_t *parser)
1421 for (i = 0; i < operator_count; ++i) {
1422 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1423 parser->tok = TOKEN_OPERATOR;
1429 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1431 ast_expression *expr = NULL;
1433 bool wantop = false;
1434 bool gotmemberof = false;
1436 /* count the parens because an if starts with one, so the
1437 * end of a condition is an unmatched closing paren
1445 parser->lex->flags.noops = false;
1447 parser_reclassify_token(parser);
1452 gotmemberof = false;
1454 parser->memberof = 0;
1456 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1457 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1459 /* a translatable string */
1463 parseerror(parser, "expected operator or end of statement, got constant");
1467 parser->lex->flags.noops = true;
1468 if (!parser_next(parser) || parser->tok != '(') {
1469 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1472 parser->lex->flags.noops = false;
1473 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1474 parseerror(parser, "expected a constant string in translatable-string extension");
1477 val = parser_const_string(parser, parser_tokval(parser), true);
1481 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1482 DEBUGSHUNTDO(con_out("push string\n"));
1484 if (!parser_next(parser) || parser->tok != ')') {
1485 parseerror(parser, "expected closing paren after translatable string");
1489 else if (parser->tok == TOKEN_IDENT)
1491 ast_expression *var;
1493 parseerror(parser, "expected operator or end of statement");
1498 if (opts.standard == COMPILER_GMQCC)
1500 if (parser->memberof == TYPE_ENTITY) {
1501 /* still get vars first since there could be a fieldpointer */
1502 var = parser_find_var(parser, parser_tokval(parser));
1504 var = parser_find_field(parser, parser_tokval(parser));
1506 else if (parser->memberof == TYPE_VECTOR)
1508 parseerror(parser, "TODO: implement effective vector member access");
1511 else if (parser->memberof) {
1512 parseerror(parser, "namespace for member not found");
1516 var = parser_find_var(parser, parser_tokval(parser));
1518 var = parser_find_var(parser, parser_tokval(parser));
1520 var = parser_find_field(parser, parser_tokval(parser));
1524 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1525 var = (ast_expression*)intrinsic_debug_typestring;
1530 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1536 if (ast_istype(var, ast_value)) {
1537 ((ast_value*)var)->uses++;
1539 else if (ast_istype(var, ast_member)) {
1540 ast_member *mem = (ast_member*)var;
1541 if (ast_istype(mem->owner, ast_value))
1542 ((ast_value*)(mem->owner))->uses++;
1545 vec_push(sy.out, syexp(parser_ctx(parser), var));
1546 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1548 else if (parser->tok == TOKEN_FLOATCONST) {
1551 parseerror(parser, "expected operator or end of statement, got constant");
1555 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1558 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1559 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1561 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1564 parseerror(parser, "expected operator or end of statement, got constant");
1568 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1571 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1572 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1574 else if (parser->tok == TOKEN_STRINGCONST) {
1577 parseerror(parser, "expected operator or end of statement, got constant");
1581 val = parser_const_string(parser, parser_tokval(parser), false);
1584 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1585 DEBUGSHUNTDO(con_out("push string\n"));
1587 else if (parser->tok == TOKEN_VECTORCONST) {
1590 parseerror(parser, "expected operator or end of statement, got constant");
1594 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1597 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1598 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1599 parser_token(parser)->constval.v.x,
1600 parser_token(parser)->constval.v.y,
1601 parser_token(parser)->constval.v.z));
1603 else if (parser->tok == '(') {
1604 parseerror(parser, "internal error: '(' should be classified as operator");
1607 else if (parser->tok == '[') {
1608 parseerror(parser, "internal error: '[' should be classified as operator");
1611 else if (parser->tok == ')') {
1613 DEBUGSHUNTDO(con_out("do[op] )\n"));
1617 /* we do expect an operator next */
1618 /* closing an opening paren */
1619 if (!parser_close_paren(parser, &sy, false))
1621 if (vec_last(parser->pot) != POT_PAREN) {
1622 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1625 vec_pop(parser->pot);
1627 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1631 /* allowed for function calls */
1632 if (!parser_close_paren(parser, &sy, true))
1634 if (vec_last(parser->pot) != POT_PAREN) {
1635 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1638 vec_pop(parser->pot);
1642 else if (parser->tok == ']') {
1644 parseerror(parser, "operand expected");
1648 if (!parser_close_paren(parser, &sy, false))
1650 if (vec_last(parser->pot) != POT_PAREN) {
1651 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1654 vec_pop(parser->pot);
1657 else if (parser->tok == TOKEN_TYPENAME) {
1658 parseerror(parser, "unexpected typename");
1661 else if (parser->tok != TOKEN_OPERATOR) {
1663 parseerror(parser, "expected operator or end of statement");
1670 /* classify the operator */
1671 const oper_info *op;
1672 const oper_info *olast = NULL;
1674 for (o = 0; o < operator_count; ++o) {
1675 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1676 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1677 !strcmp(parser_tokval(parser), operators[o].op))
1682 if (o == operator_count) {
1683 /* no operator found... must be the end of the statement */
1686 /* found an operator */
1689 /* when declaring variables, a comma starts a new variable */
1690 if (op->id == opid1(',') && !parens && stopatcomma) {
1691 /* fixup the token */
1696 /* a colon without a pervious question mark cannot be a ternary */
1697 if (!ternaries && op->id == opid2(':','?')) {
1702 if (op->id == opid1(',')) {
1703 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1704 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1708 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1709 olast = &operators[vec_last(sy.ops).etype-1];
1712 (op->prec < olast->prec) ||
1713 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1715 if (!parser_sy_apply_operator(parser, &sy))
1717 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1718 olast = &operators[vec_last(sy.ops).etype-1];
1723 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1724 /* for gmqcc standard: open up the namespace of the previous type */
1725 ast_expression *prevex = vec_last(sy.out).out;
1727 parseerror(parser, "unexpected member operator");
1730 if (prevex->expression.vtype == TYPE_ENTITY)
1731 parser->memberof = TYPE_ENTITY;
1732 else if (prevex->expression.vtype == TYPE_VECTOR)
1733 parser->memberof = TYPE_VECTOR;
1735 parseerror(parser, "type error: type has no members");
1741 if (op->id == opid1('(')) {
1743 size_t sycount = vec_size(sy.out);
1744 DEBUGSHUNTDO(con_out("push [op] (\n"));
1745 ++parens; vec_push(parser->pot, POT_PAREN);
1746 /* we expected an operator, this is the function-call operator */
1747 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1749 ++parens; vec_push(parser->pot, POT_PAREN);
1750 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1751 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1754 } else if (op->id == opid1('[')) {
1756 parseerror(parser, "unexpected array subscript");
1759 ++parens; vec_push(parser->pot, POT_PAREN);
1760 /* push both the operator and the paren, this makes life easier */
1761 vec_push(sy.ops, syop(parser_ctx(parser), op));
1762 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1764 } else if (op->id == opid2('?',':')) {
1765 vec_push(sy.ops, syop(parser_ctx(parser), op));
1766 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1769 vec_push(parser->pot, POT_TERNARY1);
1770 } else if (op->id == opid2(':','?')) {
1771 if (!vec_size(parser->pot)) {
1772 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1775 if (vec_last(parser->pot) != POT_TERNARY1) {
1776 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1779 if (!parser_close_paren(parser, &sy, false))
1781 vec_push(sy.ops, syop(parser_ctx(parser), op));
1785 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1786 vec_push(sy.ops, syop(parser_ctx(parser), op));
1787 wantop = !!(op->flags & OP_SUFFIX);
1790 if (!parser_next(parser)) {
1793 if (parser->tok == ';' ||
1794 (!parens && parser->tok == ']'))
1800 while (vec_size(sy.ops)) {
1801 if (!parser_sy_apply_operator(parser, &sy))
1805 parser->lex->flags.noops = true;
1806 if (!vec_size(sy.out)) {
1807 parseerror(parser, "empty expression");
1810 expr = sy.out[0].out;
1813 DEBUGSHUNTDO(con_out("shunt done\n"));
1814 if (vec_size(parser->pot)) {
1815 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1818 vec_free(parser->pot);
1822 parser->lex->flags.noops = true;
1828 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1830 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1833 if (!parser_next(parser)) {
1840 static void parser_enterblock(parser_t *parser)
1842 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1843 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1844 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1845 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1846 vec_push(parser->_block_ctx, parser_ctx(parser));
1849 static bool parser_leaveblock(parser_t *parser)
1852 size_t locals, typedefs;
1854 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1855 parseerror(parser, "internal error: parser_leaveblock with no block");
1859 util_htdel(vec_last(parser->variables));
1860 vec_pop(parser->variables);
1861 if (!vec_size(parser->_blocklocals)) {
1862 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1866 locals = vec_last(parser->_blocklocals);
1867 vec_pop(parser->_blocklocals);
1868 while (vec_size(parser->_locals) != locals) {
1869 ast_expression *e = vec_last(parser->_locals);
1870 ast_value *v = (ast_value*)e;
1871 vec_pop(parser->_locals);
1872 if (ast_istype(e, ast_value) && !v->uses) {
1873 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name)) {
1880 typedefs = vec_last(parser->_blocktypedefs);
1881 while (vec_size(parser->_typedefs) != typedefs) {
1882 ast_delete(vec_last(parser->_typedefs));
1883 vec_pop(parser->_typedefs);
1885 util_htdel(vec_last(parser->typedefs));
1886 vec_pop(parser->typedefs);
1888 vec_pop(parser->_block_ctx);
1892 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1894 vec_push(parser->_locals, e);
1895 util_htset(vec_last(parser->variables), name, (void*)e);
1898 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
1902 ast_expression *prev;
1904 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING) {
1906 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
1909 parseerror(parser, "internal error: failed to process condition");
1914 if (OPTS_FLAG(CORRECT_LOGIC) &&
1915 !(cond->expression.vtype == TYPE_STRING && OPTS_FLAG(TRUE_EMPTY_STRINGS)))
1917 /* non-floats need to use NOT; except for strings on -ftrue-empty-strings */
1918 unary = (ast_unary*)cond;
1919 if (!ast_istype(cond, ast_unary) || unary->op < INSTR_NOT_F || unary->op > INSTR_NOT_FNC)
1921 /* use the right NOT_ */
1923 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), type_not_instr[cond->expression.vtype], cond);
1926 * cppcheck: it thinks there is a possible null pointer dereference
1927 * otherwise it would be "redundant" to check it ast_unary_new returned
1932 parseerror(parser, "internal error: failed to process condition");
1939 unary = (ast_unary*)cond;
1940 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
1941 /*&& unary->operand->expression.vtype != TYPE_STRING) */
1943 cond = unary->operand;
1944 unary->operand = NULL;
1947 unary = (ast_unary*)cond;
1951 parseerror(parser, "internal error: failed to process condition");
1953 if (ifnot) *_ifnot = !*_ifnot;
1957 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1960 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
1963 lex_ctx ctx = parser_ctx(parser);
1965 (void)block; /* not touching */
1967 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1968 if (!parser_next(parser)) {
1969 parseerror(parser, "expected condition or 'not'");
1972 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
1974 if (!parser_next(parser)) {
1975 parseerror(parser, "expected condition in parenthesis");
1979 if (parser->tok != '(') {
1980 parseerror(parser, "expected 'if' condition in parenthesis");
1983 /* parse into the expression */
1984 if (!parser_next(parser)) {
1985 parseerror(parser, "expected 'if' condition after opening paren");
1988 /* parse the condition */
1989 cond = parse_expression_leave(parser, false);
1993 if (parser->tok != ')') {
1994 parseerror(parser, "expected closing paren after 'if' condition");
1998 /* parse into the 'then' branch */
1999 if (!parser_next(parser)) {
2000 parseerror(parser, "expected statement for on-true branch of 'if'");
2004 if (!parse_statement_or_block(parser, &ontrue)) {
2008 /* check for an else */
2009 if (!strcmp(parser_tokval(parser), "else")) {
2010 /* parse into the 'else' branch */
2011 if (!parser_next(parser)) {
2012 parseerror(parser, "expected on-false branch after 'else'");
2017 if (!parse_statement_or_block(parser, &onfalse)) {
2024 cond = process_condition(parser, cond, &ifnot);
2026 if (ontrue) ast_delete(ontrue);
2027 if (onfalse) ast_delete(onfalse);
2032 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2034 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2035 *out = (ast_expression*)ifthen;
2039 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2042 ast_expression *cond, *ontrue;
2046 lex_ctx ctx = parser_ctx(parser);
2048 (void)block; /* not touching */
2050 /* skip the 'while' and check for opening paren */
2051 if (!parser_next(parser) || parser->tok != '(') {
2052 parseerror(parser, "expected 'while' condition in parenthesis");
2055 /* parse into the expression */
2056 if (!parser_next(parser)) {
2057 parseerror(parser, "expected 'while' condition after opening paren");
2060 /* parse the condition */
2061 cond = parse_expression_leave(parser, false);
2065 if (parser->tok != ')') {
2066 parseerror(parser, "expected closing paren after 'while' condition");
2070 /* parse into the 'then' branch */
2071 if (!parser_next(parser)) {
2072 parseerror(parser, "expected while-loop body");
2076 if (!parse_statement_or_block(parser, &ontrue)) {
2081 cond = process_condition(parser, cond, &ifnot);
2086 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2087 *out = (ast_expression*)aloop;
2091 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2094 ast_expression *cond, *ontrue;
2098 lex_ctx ctx = parser_ctx(parser);
2100 (void)block; /* not touching */
2102 /* skip the 'do' and get the body */
2103 if (!parser_next(parser)) {
2104 parseerror(parser, "expected loop body");
2107 if (!parse_statement_or_block(parser, &ontrue))
2110 /* expect the "while" */
2111 if (parser->tok != TOKEN_KEYWORD ||
2112 strcmp(parser_tokval(parser), "while"))
2114 parseerror(parser, "expected 'while' and condition");
2119 /* skip the 'while' and check for opening paren */
2120 if (!parser_next(parser) || parser->tok != '(') {
2121 parseerror(parser, "expected 'while' condition in parenthesis");
2125 /* parse into the expression */
2126 if (!parser_next(parser)) {
2127 parseerror(parser, "expected 'while' condition after opening paren");
2131 /* parse the condition */
2132 cond = parse_expression_leave(parser, false);
2136 if (parser->tok != ')') {
2137 parseerror(parser, "expected closing paren after 'while' condition");
2143 if (!parser_next(parser) || parser->tok != ';') {
2144 parseerror(parser, "expected semicolon after condition");
2150 if (!parser_next(parser)) {
2151 parseerror(parser, "parse error");
2157 cond = process_condition(parser, cond, &ifnot);
2162 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2163 *out = (ast_expression*)aloop;
2167 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2170 ast_expression *initexpr, *cond, *increment, *ontrue;
2176 lex_ctx ctx = parser_ctx(parser);
2178 parser_enterblock(parser);
2185 /* skip the 'while' and check for opening paren */
2186 if (!parser_next(parser) || parser->tok != '(') {
2187 parseerror(parser, "expected 'for' expressions in parenthesis");
2190 /* parse into the expression */
2191 if (!parser_next(parser)) {
2192 parseerror(parser, "expected 'for' initializer after opening paren");
2197 if (parser->tok == TOKEN_IDENT)
2198 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2200 if (typevar || parser->tok == TOKEN_TYPENAME) {
2201 if (opts.standard != COMPILER_GMQCC) {
2202 if (parsewarning(parser, WARN_EXTENSIONS,
2203 "current standard does not allow variable declarations in for-loop initializers"))
2206 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false))
2209 else if (parser->tok != ';')
2211 initexpr = parse_expression_leave(parser, false);
2216 /* move on to condition */
2217 if (parser->tok != ';') {
2218 parseerror(parser, "expected semicolon after for-loop initializer");
2221 if (!parser_next(parser)) {
2222 parseerror(parser, "expected for-loop condition");
2226 /* parse the condition */
2227 if (parser->tok != ';') {
2228 cond = parse_expression_leave(parser, false);
2233 /* move on to incrementor */
2234 if (parser->tok != ';') {
2235 parseerror(parser, "expected semicolon after for-loop initializer");
2238 if (!parser_next(parser)) {
2239 parseerror(parser, "expected for-loop condition");
2243 /* parse the incrementor */
2244 if (parser->tok != ')') {
2245 increment = parse_expression_leave(parser, false);
2248 if (!ast_side_effects(increment)) {
2249 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2255 if (parser->tok != ')') {
2256 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2259 /* parse into the 'then' branch */
2260 if (!parser_next(parser)) {
2261 parseerror(parser, "expected for-loop body");
2264 if (!parse_statement_or_block(parser, &ontrue))
2268 cond = process_condition(parser, cond, &ifnot);
2272 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2273 *out = (ast_expression*)aloop;
2275 if (!parser_leaveblock(parser))
2279 if (initexpr) ast_delete(initexpr);
2280 if (cond) ast_delete(cond);
2281 if (increment) ast_delete(increment);
2282 (void)!parser_leaveblock(parser);
2286 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2288 ast_expression *exp = NULL;
2289 ast_return *ret = NULL;
2290 ast_value *expected = parser->function->vtype;
2292 lex_ctx ctx = parser_ctx(parser);
2294 (void)block; /* not touching */
2296 if (!parser_next(parser)) {
2297 parseerror(parser, "expected return expression");
2301 if (parser->tok != ';') {
2302 exp = parse_expression(parser, false);
2306 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2307 parseerror(parser, "return with invalid expression");
2310 ret = ast_return_new(ctx, exp);
2316 if (!parser_next(parser))
2317 parseerror(parser, "parse error");
2318 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2319 if (opts.standard != COMPILER_GMQCC)
2320 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2322 parseerror(parser, "return without value");
2324 ret = ast_return_new(ctx, NULL);
2326 *out = (ast_expression*)ret;
2330 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2332 lex_ctx ctx = parser_ctx(parser);
2334 (void)block; /* not touching */
2336 if (!parser_next(parser) || parser->tok != ';') {
2337 parseerror(parser, "expected semicolon");
2341 if (!parser_next(parser))
2342 parseerror(parser, "parse error");
2344 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
2348 /* returns true when it was a variable qualifier, false otherwise!
2349 * on error, cvq is set to CV_WRONG
2351 static bool parse_var_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *noreturn)
2353 bool had_const = false;
2354 bool had_var = false;
2355 bool had_noref = false;
2356 bool had_noreturn = false;
2359 if (!strcmp(parser_tokval(parser), "const"))
2361 else if (!strcmp(parser_tokval(parser), "var"))
2363 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2365 else if (!strcmp(parser_tokval(parser), "noref"))
2367 else if (!strcmp(parser_tokval(parser), "noreturn"))
2368 had_noreturn = true;
2369 else if (!had_const && !had_var && !had_noref && !had_noreturn) {
2374 if (!parser_next(parser))
2384 *noreturn = had_noreturn;
2387 parseerror(parser, "parse error after variable qualifier");
2392 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2394 ast_expression *operand;
2397 ast_switch *switchnode;
2398 ast_switch_case swcase;
2401 bool noref, noreturn;
2403 lex_ctx ctx = parser_ctx(parser);
2405 (void)block; /* not touching */
2408 /* parse over the opening paren */
2409 if (!parser_next(parser) || parser->tok != '(') {
2410 parseerror(parser, "expected switch operand in parenthesis");
2414 /* parse into the expression */
2415 if (!parser_next(parser)) {
2416 parseerror(parser, "expected switch operand");
2419 /* parse the operand */
2420 operand = parse_expression_leave(parser, false);
2424 switchnode = ast_switch_new(ctx, operand);
2427 if (parser->tok != ')') {
2428 ast_delete(switchnode);
2429 parseerror(parser, "expected closing paren after 'switch' operand");
2433 /* parse over the opening paren */
2434 if (!parser_next(parser) || parser->tok != '{') {
2435 ast_delete(switchnode);
2436 parseerror(parser, "expected list of cases");
2440 if (!parser_next(parser)) {
2441 ast_delete(switchnode);
2442 parseerror(parser, "expected 'case' or 'default'");
2446 /* new block; allow some variables to be declared here */
2447 parser_enterblock(parser);
2450 if (parser->tok == TOKEN_IDENT)
2451 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2452 if (typevar || parser->tok == TOKEN_TYPENAME) {
2453 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false)) {
2454 ast_delete(switchnode);
2459 if (parse_var_qualifiers(parser, true, &cvq, &noref, &noreturn))
2461 if (cvq == CV_WRONG) {
2462 ast_delete(switchnode);
2465 if (!parse_variable(parser, block, false, cvq, NULL, noref, noreturn)) {
2466 ast_delete(switchnode);
2475 while (parser->tok != '}') {
2476 ast_block *caseblock;
2478 if (parser->tok != TOKEN_KEYWORD) {
2479 ast_delete(switchnode);
2480 parseerror(parser, "expected 'case' or 'default'");
2483 if (!strcmp(parser_tokval(parser), "case")) {
2484 if (!parser_next(parser)) {
2485 ast_delete(switchnode);
2486 parseerror(parser, "expected expression for case");
2489 swcase.value = parse_expression_leave(parser, false);
2490 if (!swcase.value) {
2491 ast_delete(switchnode);
2492 parseerror(parser, "expected expression for case");
2495 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2496 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
2497 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2503 else if (!strcmp(parser_tokval(parser), "default")) {
2504 swcase.value = NULL;
2505 if (!parser_next(parser)) {
2506 ast_delete(switchnode);
2507 parseerror(parser, "expected colon");
2512 /* Now the colon and body */
2513 if (parser->tok != ':') {
2514 if (swcase.value) ast_unref(swcase.value);
2515 ast_delete(switchnode);
2516 parseerror(parser, "expected colon");
2520 if (!parser_next(parser)) {
2521 if (swcase.value) ast_unref(swcase.value);
2522 ast_delete(switchnode);
2523 parseerror(parser, "expected statements or case");
2526 caseblock = ast_block_new(parser_ctx(parser));
2528 if (swcase.value) ast_unref(swcase.value);
2529 ast_delete(switchnode);
2532 swcase.code = (ast_expression*)caseblock;
2533 vec_push(switchnode->cases, swcase);
2535 ast_expression *expr;
2536 if (parser->tok == '}')
2538 if (parser->tok == TOKEN_KEYWORD) {
2539 if (!strcmp(parser_tokval(parser), "case") ||
2540 !strcmp(parser_tokval(parser), "default"))
2545 if (!parse_statement(parser, caseblock, &expr, true)) {
2546 ast_delete(switchnode);
2551 if (!ast_block_add_expr(caseblock, expr)) {
2552 ast_delete(switchnode);
2558 parser_leaveblock(parser);
2561 if (parser->tok != '}') {
2562 ast_delete(switchnode);
2563 parseerror(parser, "expected closing paren of case list");
2566 if (!parser_next(parser)) {
2567 ast_delete(switchnode);
2568 parseerror(parser, "parse error after switch");
2571 *out = (ast_expression*)switchnode;
2575 static bool parse_goto(parser_t *parser, ast_expression **out)
2580 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2581 parseerror(parser, "expected label name after `goto`");
2585 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
2587 for (i = 0; i < vec_size(parser->labels); ++i) {
2588 if (!strcmp(parser->labels[i]->name, parser_tokval(parser))) {
2589 ast_goto_set_label(gt, parser->labels[i]);
2593 if (i == vec_size(parser->labels))
2594 vec_push(parser->gotos, gt);
2596 if (!parser_next(parser) || parser->tok != ';') {
2597 parseerror(parser, "semicolon expected after goto label");
2600 if (!parser_next(parser)) {
2601 parseerror(parser, "parse error after goto");
2605 *out = (ast_expression*)gt;
2609 static bool parse_skipwhite(parser_t *parser)
2612 if (!parser_next(parser))
2614 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
2615 return parser->tok < TOKEN_ERROR;
2618 static bool parse_eol(parser_t *parser)
2620 if (!parse_skipwhite(parser))
2622 return parser->tok == TOKEN_EOL;
2625 static bool parse_pragma_do(parser_t *parser)
2627 if (!parser_next(parser) ||
2628 parser->tok != TOKEN_IDENT ||
2629 strcmp(parser_tokval(parser), "pragma"))
2631 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
2634 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
2635 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
2639 if (!strcmp(parser_tokval(parser), "noref")) {
2640 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
2641 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
2644 parser->noref = !!parser_token(parser)->constval.i;
2645 if (!parse_eol(parser)) {
2646 parseerror(parser, "parse error after `noref` pragma");
2652 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
2659 static bool parse_pragma(parser_t *parser)
2662 parser->lex->flags.preprocessing = true;
2663 parser->lex->flags.mergelines = true;
2664 rv = parse_pragma_do(parser);
2665 if (parser->tok != TOKEN_EOL) {
2666 parseerror(parser, "junk after pragma");
2669 parser->lex->flags.preprocessing = false;
2670 parser->lex->flags.mergelines = false;
2671 if (!parser_next(parser)) {
2672 parseerror(parser, "parse error after pragma");
2678 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2680 bool noref, noreturn;
2682 ast_value *typevar = NULL;
2686 if (parser->tok == TOKEN_IDENT)
2687 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2689 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2691 /* local variable */
2693 parseerror(parser, "cannot declare a variable from here");
2696 if (opts.standard == COMPILER_QCC) {
2697 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2700 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false))
2704 else if (parse_var_qualifiers(parser, !!block, &cvq, &noref, &noreturn))
2706 if (cvq == CV_WRONG)
2708 return parse_variable(parser, block, true, cvq, NULL, noref, noreturn);
2710 else if (parser->tok == TOKEN_KEYWORD)
2712 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
2717 if (!parser_next(parser)) {
2718 parseerror(parser, "parse error after __builtin_debug_printtype");
2722 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
2724 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
2725 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
2726 if (!parser_next(parser)) {
2727 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
2733 if (!parse_statement(parser, block, out, allow_cases))
2736 con_out("__builtin_debug_printtype: got no output node\n");
2739 ast_type_to_string(*out, ty, sizeof(ty));
2740 con_out("__builtin_debug_printtype: `%s`\n", ty);
2745 else if (!strcmp(parser_tokval(parser), "return"))
2747 return parse_return(parser, block, out);
2749 else if (!strcmp(parser_tokval(parser), "if"))
2751 return parse_if(parser, block, out);
2753 else if (!strcmp(parser_tokval(parser), "while"))
2755 return parse_while(parser, block, out);
2757 else if (!strcmp(parser_tokval(parser), "do"))
2759 return parse_dowhile(parser, block, out);
2761 else if (!strcmp(parser_tokval(parser), "for"))
2763 if (opts.standard == COMPILER_QCC) {
2764 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2767 return parse_for(parser, block, out);
2769 else if (!strcmp(parser_tokval(parser), "break"))
2771 return parse_break_continue(parser, block, out, false);
2773 else if (!strcmp(parser_tokval(parser), "continue"))
2775 return parse_break_continue(parser, block, out, true);
2777 else if (!strcmp(parser_tokval(parser), "switch"))
2779 return parse_switch(parser, block, out);
2781 else if (!strcmp(parser_tokval(parser), "case") ||
2782 !strcmp(parser_tokval(parser), "default"))
2785 parseerror(parser, "unexpected 'case' label");
2790 else if (!strcmp(parser_tokval(parser), "goto"))
2792 return parse_goto(parser, out);
2794 else if (!strcmp(parser_tokval(parser), "typedef"))
2796 if (!parser_next(parser)) {
2797 parseerror(parser, "expected type definition after 'typedef'");
2800 return parse_typedef(parser);
2802 parseerror(parser, "Unexpected keyword");
2805 else if (parser->tok == '{')
2808 inner = parse_block(parser);
2811 *out = (ast_expression*)inner;
2814 else if (parser->tok == ':')
2818 if (!parser_next(parser)) {
2819 parseerror(parser, "expected label name");
2822 if (parser->tok != TOKEN_IDENT) {
2823 parseerror(parser, "label must be an identifier");
2826 label = ast_label_new(parser_ctx(parser), parser_tokval(parser));
2829 vec_push(parser->labels, label);
2830 *out = (ast_expression*)label;
2831 if (!parser_next(parser)) {
2832 parseerror(parser, "parse error after label");
2835 for (i = 0; i < vec_size(parser->gotos); ++i) {
2836 if (!strcmp(parser->gotos[i]->name, label->name)) {
2837 ast_goto_set_label(parser->gotos[i], label);
2838 vec_remove(parser->gotos, i, 1);
2844 else if (parser->tok == ';')
2846 if (!parser_next(parser)) {
2847 parseerror(parser, "parse error after empty statement");
2854 ast_expression *exp = parse_expression(parser, false);
2858 if (!ast_side_effects(exp)) {
2859 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2866 static bool parse_block_into(parser_t *parser, ast_block *block)
2870 parser_enterblock(parser);
2872 if (!parser_next(parser)) { /* skip the '{' */
2873 parseerror(parser, "expected function body");
2877 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2879 ast_expression *expr = NULL;
2880 if (parser->tok == '}')
2883 if (!parse_statement(parser, block, &expr, false)) {
2884 /* parseerror(parser, "parse error"); */
2890 if (!ast_block_add_expr(block, expr)) {
2897 if (parser->tok != '}') {
2900 (void)parser_next(parser);
2904 if (!parser_leaveblock(parser))
2906 return retval && !!block;
2909 static ast_block* parse_block(parser_t *parser)
2912 block = ast_block_new(parser_ctx(parser));
2915 if (!parse_block_into(parser, block)) {
2916 ast_block_delete(block);
2922 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
2924 if (parser->tok == '{') {
2925 *out = (ast_expression*)parse_block(parser);
2928 return parse_statement(parser, NULL, out, false);
2931 static bool create_vector_members(ast_value *var, ast_member **me)
2934 size_t len = strlen(var->name);
2936 for (i = 0; i < 3; ++i) {
2937 char *name = mem_a(len+3);
2938 memcpy(name, var->name, len);
2940 name[len+1] = 'x'+i;
2942 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
2951 do { ast_member_delete(me[--i]); } while(i);
2955 static bool parse_function_body(parser_t *parser, ast_value *var)
2957 ast_block *block = NULL;
2962 ast_expression *framenum = NULL;
2963 ast_expression *nextthink = NULL;
2964 /* None of the following have to be deleted */
2965 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2966 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2967 bool has_frame_think;
2971 has_frame_think = false;
2972 old = parser->function;
2974 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
2975 parseerror(parser, "gotos/labels leaking");
2979 if (var->expression.flags & AST_FLAG_VARIADIC) {
2980 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2981 "variadic function with implementation will not be able to access additional parameters"))
2987 if (parser->tok == '[') {
2988 /* got a frame definition: [ framenum, nextthink ]
2989 * this translates to:
2990 * self.frame = framenum;
2991 * self.nextthink = time + 0.1;
2992 * self.think = nextthink;
2996 fld_think = parser_find_field(parser, "think");
2997 fld_nextthink = parser_find_field(parser, "nextthink");
2998 fld_frame = parser_find_field(parser, "frame");
2999 if (!fld_think || !fld_nextthink || !fld_frame) {
3000 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3001 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3004 gbl_time = parser_find_global(parser, "time");
3005 gbl_self = parser_find_global(parser, "self");
3006 if (!gbl_time || !gbl_self) {
3007 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3008 parseerror(parser, "please declare the following globals: `time`, `self`");
3012 if (!parser_next(parser))
3015 framenum = parse_expression_leave(parser, true);
3017 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3020 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3021 ast_unref(framenum);
3022 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3026 if (parser->tok != ',') {
3027 ast_unref(framenum);
3028 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3029 parseerror(parser, "Got a %i\n", parser->tok);
3033 if (!parser_next(parser)) {
3034 ast_unref(framenum);
3038 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3040 /* qc allows the use of not-yet-declared functions here
3041 * - this automatically creates a prototype */
3042 ast_value *thinkfunc;
3043 ast_expression *functype = fld_think->expression.next;
3045 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3046 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3047 ast_unref(framenum);
3048 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3052 if (!parser_next(parser)) {
3053 ast_unref(framenum);
3054 ast_delete(thinkfunc);
3058 vec_push(parser->globals, (ast_expression*)thinkfunc);
3059 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
3060 nextthink = (ast_expression*)thinkfunc;
3063 nextthink = parse_expression_leave(parser, true);
3065 ast_unref(framenum);
3066 parseerror(parser, "expected a think-function in [frame,think] notation");
3071 if (!ast_istype(nextthink, ast_value)) {
3072 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3076 if (retval && parser->tok != ']') {
3077 parseerror(parser, "expected closing `]` for [frame,think] notation");
3081 if (retval && !parser_next(parser)) {
3085 if (retval && parser->tok != '{') {
3086 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3091 ast_unref(nextthink);
3092 ast_unref(framenum);
3096 has_frame_think = true;
3099 block = ast_block_new(parser_ctx(parser));
3101 parseerror(parser, "failed to allocate block");
3102 if (has_frame_think) {
3103 ast_unref(nextthink);
3104 ast_unref(framenum);
3109 if (has_frame_think) {
3111 ast_expression *self_frame;
3112 ast_expression *self_nextthink;
3113 ast_expression *self_think;
3114 ast_expression *time_plus_1;
3115 ast_store *store_frame;
3116 ast_store *store_nextthink;
3117 ast_store *store_think;
3119 ctx = parser_ctx(parser);
3120 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3121 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3122 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3124 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3125 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3127 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3128 if (self_frame) ast_delete(self_frame);
3129 if (self_nextthink) ast_delete(self_nextthink);
3130 if (self_think) ast_delete(self_think);
3131 if (time_plus_1) ast_delete(time_plus_1);
3137 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3138 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3139 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3142 ast_delete(self_frame);
3145 if (!store_nextthink) {
3146 ast_delete(self_nextthink);
3150 ast_delete(self_think);
3154 if (store_frame) ast_delete(store_frame);
3155 if (store_nextthink) ast_delete(store_nextthink);
3156 if (store_think) ast_delete(store_think);
3159 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3160 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3161 !ast_block_add_expr(block, (ast_expression*)store_think))
3168 parseerror(parser, "failed to generate code for [frame,think]");
3169 ast_unref(nextthink);
3170 ast_unref(framenum);
3176 parser_enterblock(parser);
3178 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3180 ast_value *param = var->expression.params[parami];
3183 if (param->expression.vtype != TYPE_VECTOR &&
3184 (param->expression.vtype != TYPE_FIELD ||
3185 param->expression.next->expression.vtype != TYPE_VECTOR))
3190 if (!create_vector_members(param, me)) {
3191 ast_block_delete(block);
3195 for (e = 0; e < 3; ++e) {
3196 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3197 ast_block_collect(block, (ast_expression*)me[e]);
3201 func = ast_function_new(ast_ctx(var), var->name, var);
3203 parseerror(parser, "failed to allocate function for `%s`", var->name);
3204 ast_block_delete(block);
3207 vec_push(parser->functions, func);
3209 parser->function = func;
3210 if (!parse_block_into(parser, block)) {
3211 ast_block_delete(block);
3215 vec_push(func->blocks, block);
3217 parser->function = old;
3218 if (!parser_leaveblock(parser))
3220 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3221 parseerror(parser, "internal error: local scopes left");
3225 if (parser->tok == ';')
3226 return parser_next(parser);
3227 else if (opts.standard == COMPILER_QCC)
3228 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3232 vec_pop(parser->functions);
3233 ast_function_delete(func);
3234 var->constval.vfunc = NULL;
3237 (void)!parser_leaveblock(parser);
3238 parser->function = old;
3242 static ast_expression *array_accessor_split(
3247 ast_expression *left,
3248 ast_expression *right
3254 lex_ctx ctx = ast_ctx(array);
3256 if (!left || !right) {
3257 if (left) ast_delete(left);
3258 if (right) ast_delete(right);
3262 cmp = ast_binary_new(ctx, INSTR_LT,
3263 (ast_expression*)index,
3264 (ast_expression*)parser_const_float(parser, middle));
3268 parseerror(parser, "internal error: failed to create comparison for array setter");
3272 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3274 ast_delete(cmp); /* will delete left and right */
3275 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3279 return (ast_expression*)ifthen;
3282 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3284 lex_ctx ctx = ast_ctx(array);
3286 if (from+1 == afterend) {
3287 /* set this value */
3290 ast_array_index *subscript;
3292 int assignop = type_store_instr[value->expression.vtype];
3294 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3295 assignop = INSTR_STORE_V;
3297 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3301 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3303 ast_delete(subscript);
3307 block = ast_block_new(ctx);
3313 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3318 ret = ast_return_new(ctx, NULL);
3324 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3329 return (ast_expression*)block;
3331 ast_expression *left, *right;
3332 size_t diff = afterend - from;
3333 size_t middle = from + diff/2;
3334 left = array_setter_node(parser, array, index, value, from, middle);
3335 right = array_setter_node(parser, array, index, value, middle, afterend);
3336 return array_accessor_split(parser, array, index, middle, left, right);
3340 static ast_expression *array_field_setter_node(
3349 lex_ctx ctx = ast_ctx(array);
3351 if (from+1 == afterend) {
3352 /* set this value */
3355 ast_entfield *entfield;
3356 ast_array_index *subscript;
3358 int assignop = type_storep_instr[value->expression.vtype];
3360 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3361 assignop = INSTR_STOREP_V;
3363 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3367 entfield = ast_entfield_new_force(ctx,
3368 (ast_expression*)entity,
3369 (ast_expression*)subscript,
3370 (ast_expression*)subscript);
3372 ast_delete(subscript);
3376 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3378 ast_delete(entfield);
3382 block = ast_block_new(ctx);
3388 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3393 ret = ast_return_new(ctx, NULL);
3399 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3404 return (ast_expression*)block;
3406 ast_expression *left, *right;
3407 size_t diff = afterend - from;
3408 size_t middle = from + diff/2;
3409 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3410 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3411 return array_accessor_split(parser, array, index, middle, left, right);
3415 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3417 lex_ctx ctx = ast_ctx(array);
3419 if (from+1 == afterend) {
3421 ast_array_index *subscript;
3423 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3427 ret = ast_return_new(ctx, (ast_expression*)subscript);
3429 ast_delete(subscript);
3433 return (ast_expression*)ret;
3435 ast_expression *left, *right;
3436 size_t diff = afterend - from;
3437 size_t middle = from + diff/2;
3438 left = array_getter_node(parser, array, index, from, middle);
3439 right = array_getter_node(parser, array, index, middle, afterend);
3440 return array_accessor_split(parser, array, index, middle, left, right);
3444 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3446 ast_function *func = NULL;
3447 ast_value *fval = NULL;
3448 ast_block *body = NULL;
3450 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3452 parseerror(parser, "failed to create accessor function value");
3456 func = ast_function_new(ast_ctx(array), funcname, fval);
3459 parseerror(parser, "failed to create accessor function node");
3463 body = ast_block_new(ast_ctx(array));
3465 parseerror(parser, "failed to create block for array accessor");
3471 vec_push(func->blocks, body);
3474 vec_push(parser->accessors, fval);
3479 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
3481 ast_expression *root = NULL;
3482 ast_value *index = NULL;
3483 ast_value *value = NULL;
3487 if (!ast_istype(array->expression.next, ast_value)) {
3488 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3492 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3494 func = fval->constval.vfunc;
3495 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3497 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3498 value = ast_value_copy((ast_value*)array->expression.next);
3500 if (!index || !value) {
3501 parseerror(parser, "failed to create locals for array accessor");
3504 (void)!ast_value_set_name(value, "value"); /* not important */
3505 vec_push(fval->expression.params, index);
3506 vec_push(fval->expression.params, value);
3508 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
3510 parseerror(parser, "failed to build accessor search tree");
3514 array->setter = fval;
3515 return ast_block_add_expr(func->blocks[0], root);
3517 if (index) ast_delete(index);
3518 if (value) ast_delete(value);
3519 if (root) ast_delete(root);
3525 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
3527 ast_expression *root = NULL;
3528 ast_value *entity = NULL;
3529 ast_value *index = NULL;
3530 ast_value *value = NULL;
3534 if (!ast_istype(array->expression.next, ast_value)) {
3535 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3539 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3541 func = fval->constval.vfunc;
3542 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3544 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
3545 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3546 value = ast_value_copy((ast_value*)array->expression.next);
3547 if (!entity || !index || !value) {
3548 parseerror(parser, "failed to create locals for array accessor");
3551 (void)!ast_value_set_name(value, "value"); /* not important */
3552 vec_push(fval->expression.params, entity);
3553 vec_push(fval->expression.params, index);
3554 vec_push(fval->expression.params, value);
3556 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3558 parseerror(parser, "failed to build accessor search tree");
3562 array->setter = fval;
3563 return ast_block_add_expr(func->blocks[0], root);
3565 if (entity) ast_delete(entity);
3566 if (index) ast_delete(index);
3567 if (value) ast_delete(value);
3568 if (root) ast_delete(root);
3574 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3576 ast_expression *root = NULL;
3577 ast_value *index = NULL;
3581 /* NOTE: checking array->expression.next rather than elemtype since
3582 * for fields elemtype is a temporary fieldtype.
3584 if (!ast_istype(array->expression.next, ast_value)) {
3585 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3589 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3591 func = fval->constval.vfunc;
3592 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3594 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3597 parseerror(parser, "failed to create locals for array accessor");
3600 vec_push(fval->expression.params, index);
3602 root = array_getter_node(parser, array, index, 0, array->expression.count);
3604 parseerror(parser, "failed to build accessor search tree");
3608 array->getter = fval;
3609 return ast_block_add_expr(func->blocks[0], root);
3611 if (index) ast_delete(index);
3612 if (root) ast_delete(root);
3618 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3619 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3627 bool variadic = false;
3629 ctx = parser_ctx(parser);
3631 /* for the sake of less code we parse-in in this function */
3632 if (!parser_next(parser)) {
3633 parseerror(parser, "expected parameter list");
3639 /* parse variables until we hit a closing paren */
3640 while (parser->tok != ')') {
3642 /* there must be commas between them */
3643 if (parser->tok != ',') {
3644 parseerror(parser, "expected comma or end of parameter list");
3647 if (!parser_next(parser)) {
3648 parseerror(parser, "expected parameter");
3654 if (parser->tok == TOKEN_DOTS) {
3655 /* '...' indicates a varargs function */
3657 if (!parser_next(parser)) {
3658 parseerror(parser, "expected parameter");
3661 if (parser->tok != ')') {
3662 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3668 /* for anything else just parse a typename */
3669 param = parse_typename(parser, NULL, NULL);
3672 vec_push(params, param);
3673 if (param->expression.vtype >= TYPE_VARIANT) {
3674 char typename[1024];
3675 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
3676 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
3682 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
3686 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
3687 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3690 if (!parser_next(parser)) {
3691 parseerror(parser, "parse error after typename");
3695 /* now turn 'var' into a function type */
3696 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3697 fval->expression.next = (ast_expression*)var;
3699 fval->expression.flags |= AST_FLAG_VARIADIC;
3702 var->expression.params = params;
3709 for (i = 0; i < vec_size(params); ++i)
3710 ast_delete(params[i]);
3715 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3717 ast_expression *cexp;
3718 ast_value *cval, *tmp;
3721 ctx = parser_ctx(parser);
3723 if (!parser_next(parser)) {
3725 parseerror(parser, "expected array-size");
3729 cexp = parse_expression_leave(parser, true);
3731 if (!cexp || !ast_istype(cexp, ast_value)) {
3735 parseerror(parser, "expected array-size as constant positive integer");
3738 cval = (ast_value*)cexp;
3740 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3741 tmp->expression.next = (ast_expression*)var;
3744 if (cval->expression.vtype == TYPE_INTEGER)
3745 tmp->expression.count = cval->constval.vint;
3746 else if (cval->expression.vtype == TYPE_FLOAT)
3747 tmp->expression.count = cval->constval.vfloat;
3751 parseerror(parser, "array-size must be a positive integer constant");
3756 if (parser->tok != ']') {
3758 parseerror(parser, "expected ']' after array-size");
3761 if (!parser_next(parser)) {
3763 parseerror(parser, "error after parsing array size");
3769 /* Parse a complete typename.
3770 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3771 * but when parsing variables separated by comma
3772 * 'storebase' should point to where the base-type should be kept.
3773 * The base type makes up every bit of type information which comes *before* the
3776 * The following will be parsed in its entirety:
3778 * The 'basetype' in this case is 'void()'
3779 * and if there's a comma after it, say:
3781 * then the type-information 'void()' can be stored in 'storebase'
3783 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3785 ast_value *var, *tmp;
3788 const char *name = NULL;
3789 bool isfield = false;
3790 bool wasarray = false;
3791 size_t morefields = 0;
3793 ctx = parser_ctx(parser);
3795 /* types may start with a dot */
3796 if (parser->tok == '.') {
3798 /* if we parsed a dot we need a typename now */
3799 if (!parser_next(parser)) {
3800 parseerror(parser, "expected typename for field definition");
3804 /* Further dots are handled seperately because they won't be part of the
3807 while (parser->tok == '.') {
3809 if (!parser_next(parser)) {
3810 parseerror(parser, "expected typename for field definition");
3815 if (parser->tok == TOKEN_IDENT)
3816 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
3817 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
3818 parseerror(parser, "expected typename");
3822 /* generate the basic type value */
3823 if (cached_typedef) {
3824 var = ast_value_copy(cached_typedef);
3825 ast_value_set_name(var, "<type(from_def)>");
3827 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3829 for (; morefields; --morefields) {
3830 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
3831 tmp->expression.next = (ast_expression*)var;
3835 /* do not yet turn into a field - remember:
3836 * .void() foo; is a field too
3837 * .void()() foo; is a function
3841 if (!parser_next(parser)) {
3843 parseerror(parser, "parse error after typename");
3847 /* an opening paren now starts the parameter-list of a function
3848 * this is where original-QC has parameter lists.
3849 * We allow a single parameter list here.
3850 * Much like fteqcc we don't allow `float()() x`
3852 if (parser->tok == '(') {
3853 var = parse_parameter_list(parser, var);
3858 /* store the base if requested */
3860 *storebase = ast_value_copy(var);
3862 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3863 tmp->expression.next = (ast_expression*)*storebase;
3868 /* there may be a name now */
3869 if (parser->tok == TOKEN_IDENT) {
3870 name = util_strdup(parser_tokval(parser));
3872 if (!parser_next(parser)) {
3874 parseerror(parser, "error after variable or field declaration");
3879 /* now this may be an array */
3880 if (parser->tok == '[') {
3882 var = parse_arraysize(parser, var);
3887 /* This is the point where we can turn it into a field */
3889 /* turn it into a field if desired */
3890 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3891 tmp->expression.next = (ast_expression*)var;
3895 /* now there may be function parens again */
3896 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
3897 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3898 if (parser->tok == '(' && wasarray)
3899 parseerror(parser, "arrays as part of a return type is not supported");
3900 while (parser->tok == '(') {
3901 var = parse_parameter_list(parser, var);
3910 /* finally name it */
3912 if (!ast_value_set_name(var, name)) {
3914 parseerror(parser, "internal error: failed to set name");
3917 /* free the name, ast_value_set_name duplicates */
3924 static bool parse_typedef(parser_t *parser)
3926 ast_value *typevar, *oldtype;
3927 ast_expression *old;
3929 typevar = parse_typename(parser, NULL, NULL);
3934 if ( (old = parser_find_var(parser, typevar->name)) ) {
3935 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
3936 " -> `%s` has been declared here: %s:%i",
3937 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
3938 ast_delete(typevar);
3942 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
3943 parseerror(parser, "type `%s` has already been declared here: %s:%i",
3944 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
3945 ast_delete(typevar);
3949 vec_push(parser->_typedefs, typevar);
3950 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
3952 if (parser->tok != ';') {
3953 parseerror(parser, "expected semicolon after typedef");
3956 if (!parser_next(parser)) {
3957 parseerror(parser, "parse error after typedef");
3964 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn)
3968 ast_expression *old;
3972 ast_value *basetype = NULL;
3974 bool isparam = false;
3975 bool isvector = false;
3976 bool cleanvar = true;
3977 bool wasarray = false;
3981 /* get the first complete variable */
3982 var = parse_typename(parser, &basetype, cached_typedef);
3985 ast_delete(basetype);
3993 /* Part 0: finish the type */
3994 if (parser->tok == '(') {
3995 if (opts.standard == COMPILER_QCC)
3996 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3997 var = parse_parameter_list(parser, var);
4003 /* we only allow 1-dimensional arrays */
4004 if (parser->tok == '[') {
4006 var = parse_arraysize(parser, var);
4012 if (parser->tok == '(' && wasarray) {
4013 parseerror(parser, "arrays as part of a return type is not supported");
4014 /* we'll still parse the type completely for now */
4016 /* for functions returning functions */
4017 while (parser->tok == '(') {
4018 if (opts.standard == COMPILER_QCC)
4019 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4020 var = parse_parameter_list(parser, var);
4027 var->cvq = qualifier;
4028 /* in a noref section we simply bump the usecount */
4029 if (noref || parser->noref)
4032 var->expression.flags |= AST_FLAG_NORETURN;
4035 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4036 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4037 * is then filled with the previous definition and the parameter-names replaced.
4040 /* Deal with end_sys_ vars */
4042 if (!strcmp(var->name, "end_sys_globals")) {
4044 parser->crc_globals = vec_size(parser->globals);
4047 else if (!strcmp(var->name, "end_sys_fields")) {
4049 parser->crc_fields = vec_size(parser->fields);
4052 if (was_end && var->expression.vtype == TYPE_FIELD) {
4053 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4054 "global '%s' hint should not be a field",
4055 parser_tokval(parser)))
4062 if (!nofields && var->expression.vtype == TYPE_FIELD)
4064 /* deal with field declarations */
4065 old = parser_find_field(parser, var->name);
4067 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4068 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
4077 parseerror(parser, "field `%s` already declared here: %s:%i",
4078 var->name, ast_ctx(old).file, ast_ctx(old).line);
4083 if (opts.standard == COMPILER_QCC &&
4084 (old = parser_find_global(parser, var->name)))
4086 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4087 parseerror(parser, "field `%s` already declared here: %s:%i",
4088 var->name, ast_ctx(old).file, ast_ctx(old).line);
4095 /* deal with other globals */
4096 old = parser_find_global(parser, var->name);
4097 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
4099 /* This is a function which had a prototype */
4100 if (!ast_istype(old, ast_value)) {
4101 parseerror(parser, "internal error: prototype is not an ast_value");
4105 proto = (ast_value*)old;
4106 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
4107 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
4109 ast_ctx(proto).file, ast_ctx(proto).line);
4113 /* we need the new parameter-names */
4114 for (i = 0; i < vec_size(proto->expression.params); ++i)
4115 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4123 if (opts.standard == COMPILER_GMQCC) {
4124 parseerror(parser, "global `%s` already declared here: %s:%i",
4125 var->name, ast_ctx(old).file, ast_ctx(old).line);
4129 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4130 "global `%s` already declared here: %s:%i",
4131 var->name, ast_ctx(old).file, ast_ctx(old).line))
4136 proto = (ast_value*)old;
4137 if (!ast_istype(old, ast_value)) {
4138 parseerror(parser, "internal error: not an ast_value");
4147 if (opts.standard == COMPILER_QCC &&
4148 (old = parser_find_field(parser, var->name)))
4150 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4151 parseerror(parser, "global `%s` already declared here: %s:%i",
4152 var->name, ast_ctx(old).file, ast_ctx(old).line);
4159 else /* it's not a global */
4161 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4162 if (old && !isparam) {
4163 parseerror(parser, "local `%s` already declared here: %s:%i",
4164 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4168 old = parser_find_local(parser, var->name, 0, &isparam);
4169 if (old && isparam) {
4170 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4171 "local `%s` is shadowing a parameter", var->name))
4173 parseerror(parser, "local `%s` already declared here: %s:%i",
4174 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4178 if (opts.standard != COMPILER_GMQCC) {
4187 * Create the global/local, and deal with vector types.
4190 if (var->expression.vtype == TYPE_VECTOR)
4192 else if (var->expression.vtype == TYPE_FIELD &&
4193 var->expression.next->expression.vtype == TYPE_VECTOR)
4197 if (!create_vector_members(var, me)) {
4204 /* deal with global variables, fields, functions */
4205 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4206 var->isfield = true;
4207 vec_push(parser->fields, (ast_expression*)var);
4208 util_htset(parser->htfields, var->name, var);
4210 for (i = 0; i < 3; ++i) {
4211 vec_push(parser->fields, (ast_expression*)me[i]);
4212 util_htset(parser->htfields, me[i]->name, me[i]);
4217 vec_push(parser->globals, (ast_expression*)var);
4218 util_htset(parser->htglobals, var->name, var);
4220 for (i = 0; i < 3; ++i) {
4221 vec_push(parser->globals, (ast_expression*)me[i]);
4222 util_htset(parser->htglobals, me[i]->name, me[i]);
4227 vec_push(localblock->locals, var);
4228 parser_addlocal(parser, var->name, (ast_expression*)var);
4230 for (i = 0; i < 3; ++i) {
4231 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4232 ast_block_collect(localblock, (ast_expression*)me[i]);
4238 me[0] = me[1] = me[2] = NULL;
4243 if (var->expression.vtype == TYPE_ARRAY) {
4245 snprintf(name, sizeof(name), "%s##SET", var->name);
4246 if (!parser_create_array_setter(parser, var, name))
4248 snprintf(name, sizeof(name), "%s##GET", var->name);
4249 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4252 else if (!localblock && !nofields &&
4253 var->expression.vtype == TYPE_FIELD &&
4254 var->expression.next->expression.vtype == TYPE_ARRAY)
4257 ast_expression *telem;
4259 ast_value *array = (ast_value*)var->expression.next;
4261 if (!ast_istype(var->expression.next, ast_value)) {
4262 parseerror(parser, "internal error: field element type must be an ast_value");
4266 snprintf(name, sizeof(name), "%s##SETF", var->name);
4267 if (!parser_create_array_field_setter(parser, array, name))
4270 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4271 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4272 tfield->expression.next = telem;
4273 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4274 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4282 if (parser->tok == ';') {
4283 ast_delete(basetype);
4284 if (!parser_next(parser)) {
4285 parseerror(parser, "error after variable declaration");
4291 if (parser->tok == ',')
4295 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4298 parseerror(parser, "missing comma or semicolon while parsing variables");
4302 if (localblock && opts.standard == COMPILER_QCC) {
4303 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4304 "initializing expression turns variable `%s` into a constant in this standard",
4311 if (parser->tok != '{') {
4312 if (parser->tok != '=') {
4313 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4317 if (!parser_next(parser)) {
4318 parseerror(parser, "error parsing initializer");
4322 else if (opts.standard == COMPILER_QCC) {
4323 parseerror(parser, "expected '=' before function body in this standard");
4326 if (parser->tok == '#') {
4327 ast_function *func = NULL;
4330 parseerror(parser, "cannot declare builtins within functions");
4333 if (var->expression.vtype != TYPE_FUNCTION) {
4334 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4337 if (!parser_next(parser)) {
4338 parseerror(parser, "expected builtin number");
4341 if (parser->tok != TOKEN_INTCONST) {
4342 parseerror(parser, "builtin number must be an integer constant");
4345 if (parser_token(parser)->constval.i < 0) {
4346 parseerror(parser, "builtin number must be an integer greater than zero");
4350 if (var->hasvalue) {
4351 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
4352 "builtin `%s` has already been defined\n"
4353 " -> previous declaration here: %s:%i",
4354 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
4358 func = ast_function_new(ast_ctx(var), var->name, var);
4360 parseerror(parser, "failed to allocate function for `%s`", var->name);
4363 vec_push(parser->functions, func);
4365 func->builtin = -parser_token(parser)->constval.i-1;
4368 if (!parser_next(parser)) {
4369 parseerror(parser, "expected comma or semicolon");
4371 ast_function_delete(func);
4372 var->constval.vfunc = NULL;
4376 else if (parser->tok == '{' || parser->tok == '[')
4379 parseerror(parser, "cannot declare functions within functions");
4384 ast_ctx(proto) = parser_ctx(parser);
4386 if (!parse_function_body(parser, var))
4388 ast_delete(basetype);
4389 for (i = 0; i < vec_size(parser->gotos); ++i)
4390 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
4391 vec_free(parser->gotos);
4392 vec_free(parser->labels);
4395 ast_expression *cexp;
4398 cexp = parse_expression_leave(parser, true);
4403 cval = (ast_value*)cexp;
4404 if (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
4405 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
4408 if (opts.standard != COMPILER_GMQCC &&
4409 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4410 qualifier != CV_VAR)
4412 var->cvq = CV_CONST;
4414 var->hasvalue = true;
4415 if (cval->expression.vtype == TYPE_STRING)
4416 var->constval.vstring = parser_strdup(cval->constval.vstring);
4417 else if (cval->expression.vtype == TYPE_FIELD)
4418 var->constval.vfield = cval;
4420 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
4425 shunt sy = { NULL, NULL };
4428 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
4429 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
4430 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
4431 if (!parser_sy_apply_operator(parser, &sy))
4434 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
4435 parseerror(parser, "internal error: leaked operands");
4436 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
4446 if (parser->tok == ',') {
4447 if (!parser_next(parser)) {
4448 parseerror(parser, "expected another variable");
4452 if (parser->tok != TOKEN_IDENT) {
4453 parseerror(parser, "expected another variable");
4456 var = ast_value_copy(basetype);
4458 ast_value_set_name(var, parser_tokval(parser));
4459 if (!parser_next(parser)) {
4460 parseerror(parser, "error parsing variable declaration");
4466 if (parser->tok != ';') {
4467 parseerror(parser, "missing semicolon after variables");
4471 if (!parser_next(parser)) {
4472 parseerror(parser, "parse error after variable declaration");
4476 ast_delete(basetype);
4480 if (cleanvar && var)
4482 ast_delete(basetype);
4486 ast_delete(basetype);
4487 if (cleanvar && var)
4489 if (me[0]) ast_member_delete(me[0]);
4490 if (me[1]) ast_member_delete(me[1]);
4491 if (me[2]) ast_member_delete(me[2]);
4495 static bool parser_global_statement(parser_t *parser)
4499 bool noreturn = false;
4500 ast_value *istype = NULL;
4502 if (parser->tok == TOKEN_IDENT)
4503 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
4505 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
4507 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false);
4509 else if (parse_var_qualifiers(parser, false, &cvq, &noref, &noreturn))
4511 if (cvq == CV_WRONG)
4513 return parse_variable(parser, NULL, true, cvq, NULL, noref, noreturn);
4515 else if (parser->tok == TOKEN_KEYWORD)
4517 if (!strcmp(parser_tokval(parser), "typedef")) {
4518 if (!parser_next(parser)) {
4519 parseerror(parser, "expected type definition after 'typedef'");
4522 return parse_typedef(parser);
4524 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
4527 else if (parser->tok == '#')
4529 return parse_pragma(parser);
4531 else if (parser->tok == '$')
4533 if (!parser_next(parser)) {
4534 parseerror(parser, "parse error");
4540 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
4546 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
4548 return util_crc16(old, str, strlen(str));
4551 static void progdefs_crc_file(const char *str)
4553 /* write to progdefs.h here */
4557 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
4559 old = progdefs_crc_sum(old, str);
4560 progdefs_crc_file(str);
4564 static void generate_checksum(parser_t *parser)
4566 uint16_t crc = 0xFFFF;
4570 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
4571 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
4573 progdefs_crc_file("\tint\tpad;\n");
4574 progdefs_crc_file("\tint\tofs_return[3];\n");
4575 progdefs_crc_file("\tint\tofs_parm0[3];\n");
4576 progdefs_crc_file("\tint\tofs_parm1[3];\n");
4577 progdefs_crc_file("\tint\tofs_parm2[3];\n");
4578 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4579 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4580 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4581 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4582 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4584 for (i = 0; i < parser->crc_globals; ++i) {
4585 if (!ast_istype(parser->globals[i], ast_value))
4587 value = (ast_value*)(parser->globals[i]);
4588 switch (value->expression.vtype) {
4589 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4590 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4591 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4592 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4594 crc = progdefs_crc_both(crc, "\tint\t");
4597 crc = progdefs_crc_both(crc, value->name);
4598 crc = progdefs_crc_both(crc, ";\n");
4600 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4601 for (i = 0; i < parser->crc_fields; ++i) {
4602 if (!ast_istype(parser->fields[i], ast_value))
4604 value = (ast_value*)(parser->fields[i]);
4605 switch (value->expression.next->expression.vtype) {
4606 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4607 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4608 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4609 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4611 crc = progdefs_crc_both(crc, "\tint\t");
4614 crc = progdefs_crc_both(crc, value->name);
4615 crc = progdefs_crc_both(crc, ";\n");
4617 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4622 static parser_t *parser;
4628 parser = (parser_t*)mem_a(sizeof(parser_t));
4632 memset(parser, 0, sizeof(*parser));
4634 for (i = 0; i < operator_count; ++i) {
4635 if (operators[i].id == opid1('=')) {
4636 parser->assign_op = operators+i;
4640 if (!parser->assign_op) {
4641 printf("internal error: initializing parser: failed to find assign operator\n");
4646 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4647 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4648 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4649 vec_push(parser->_blocktypedefs, 0);
4653 bool parser_compile()
4655 /* initial lexer/parser state */
4656 parser->lex->flags.noops = true;
4658 if (parser_next(parser))
4660 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4662 if (!parser_global_statement(parser)) {
4663 if (parser->tok == TOKEN_EOF)
4664 parseerror(parser, "unexpected eof");
4665 else if (!parser->errors)
4666 parseerror(parser, "there have been errors, bailing out");
4667 lex_close(parser->lex);
4673 parseerror(parser, "parse error");
4674 lex_close(parser->lex);
4679 lex_close(parser->lex);
4682 return !parser->errors;
4685 bool parser_compile_file(const char *filename)
4687 parser->lex = lex_open(filename);
4689 con_err("failed to open file \"%s\"\n", filename);
4692 return parser_compile();
4695 bool parser_compile_string_len(const char *name, const char *str, size_t len)
4697 parser->lex = lex_open_string(str, len, name);
4699 con_err("failed to create lexer for string \"%s\"\n", name);
4702 return parser_compile();
4705 bool parser_compile_string(const char *name, const char *str)
4707 parser->lex = lex_open_string(str, strlen(str), name);
4709 con_err("failed to create lexer for string \"%s\"\n", name);
4712 return parser_compile();
4715 void parser_cleanup()
4718 for (i = 0; i < vec_size(parser->accessors); ++i) {
4719 ast_delete(parser->accessors[i]->constval.vfunc);
4720 parser->accessors[i]->constval.vfunc = NULL;
4721 ast_delete(parser->accessors[i]);
4723 for (i = 0; i < vec_size(parser->functions); ++i) {
4724 ast_delete(parser->functions[i]);
4726 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4727 ast_delete(parser->imm_vector[i]);
4729 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4730 ast_delete(parser->imm_string[i]);
4732 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4733 ast_delete(parser->imm_float[i]);
4735 for (i = 0; i < vec_size(parser->fields); ++i) {
4736 ast_delete(parser->fields[i]);
4738 for (i = 0; i < vec_size(parser->globals); ++i) {
4739 ast_delete(parser->globals[i]);
4741 vec_free(parser->accessors);
4742 vec_free(parser->functions);
4743 vec_free(parser->imm_vector);
4744 vec_free(parser->imm_string);
4745 vec_free(parser->imm_float);
4746 vec_free(parser->globals);
4747 vec_free(parser->fields);
4749 for (i = 0; i < vec_size(parser->variables); ++i)
4750 util_htdel(parser->variables[i]);
4751 vec_free(parser->variables);
4752 vec_free(parser->_blocklocals);
4753 vec_free(parser->_locals);
4755 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4756 ast_delete(parser->_typedefs[i]);
4757 vec_free(parser->_typedefs);
4758 for (i = 0; i < vec_size(parser->typedefs); ++i)
4759 util_htdel(parser->typedefs[i]);
4760 vec_free(parser->typedefs);
4761 vec_free(parser->_blocktypedefs);
4763 vec_free(parser->_block_ctx);
4765 vec_free(parser->labels);
4766 vec_free(parser->gotos);
4771 bool parser_finish(const char *output)
4777 if (!parser->errors)
4779 ir = ir_builder_new("gmqcc_out");
4781 con_out("failed to allocate builder\n");
4785 for (i = 0; i < vec_size(parser->fields); ++i) {
4788 if (!ast_istype(parser->fields[i], ast_value))
4790 field = (ast_value*)parser->fields[i];
4791 hasvalue = field->hasvalue;
4792 field->hasvalue = false;
4793 if (!ast_global_codegen((ast_value*)field, ir, true)) {
4794 con_out("failed to generate field %s\n", field->name);
4795 ir_builder_delete(ir);
4800 ast_expression *subtype;
4801 field->hasvalue = true;
4802 subtype = field->expression.next;
4803 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
4804 if (subtype->expression.vtype == TYPE_FIELD)
4805 ifld->fieldtype = subtype->expression.next->expression.vtype;
4806 else if (subtype->expression.vtype == TYPE_FUNCTION)
4807 ifld->outtype = subtype->expression.next->expression.vtype;
4808 (void)!ir_value_set_field(field->ir_v, ifld);
4811 for (i = 0; i < vec_size(parser->globals); ++i) {
4813 if (!ast_istype(parser->globals[i], ast_value))
4815 asvalue = (ast_value*)(parser->globals[i]);
4816 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
4817 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
4818 "unused global: `%s`", asvalue->name);
4820 if (!ast_global_codegen(asvalue, ir, false)) {
4821 con_out("failed to generate global %s\n", asvalue->name);
4822 ir_builder_delete(ir);
4826 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4827 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
4828 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
4829 ir_builder_delete(ir);
4833 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4834 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
4835 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
4836 ir_builder_delete(ir);
4840 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4841 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
4842 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
4843 ir_builder_delete(ir);
4847 for (i = 0; i < vec_size(parser->globals); ++i) {
4849 if (!ast_istype(parser->globals[i], ast_value))
4851 asvalue = (ast_value*)(parser->globals[i]);
4852 if (!ast_generate_accessors(asvalue, ir)) {
4853 ir_builder_delete(ir);
4857 for (i = 0; i < vec_size(parser->fields); ++i) {
4859 asvalue = (ast_value*)(parser->fields[i]->expression.next);
4861 if (!ast_istype((ast_expression*)asvalue, ast_value))
4863 if (asvalue->expression.vtype != TYPE_ARRAY)
4865 if (!ast_generate_accessors(asvalue, ir)) {
4866 ir_builder_delete(ir);
4870 for (i = 0; i < vec_size(parser->functions); ++i) {
4871 if (!ast_function_codegen(parser->functions[i], ir)) {
4872 con_out("failed to generate function %s\n", parser->functions[i]->name);
4873 ir_builder_delete(ir);
4878 ir_builder_dump(ir, con_out);
4879 for (i = 0; i < vec_size(parser->functions); ++i) {
4880 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4881 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4882 ir_builder_delete(ir);
4889 ir_builder_dump(ir, con_out);
4891 generate_checksum(parser);
4893 if (!ir_builder_generate(ir, output)) {
4894 con_out("*** failed to generate output file\n");
4895 ir_builder_delete(ir);
4900 ir_builder_delete(ir);
4904 con_out("*** there were compile errors\n");