1#include "ruby.h"
2
3#ifdef HAVE_RB_IS_CONST_NAME
4# define get_symbol_type(type, t, name) do { \
5	ID id = rb_check_id(&name); \
6	t = (id ? rb_is_##type##_id(id) : rb_is_##type##_name(name)); \
7    } while (0)
8#else
9# define get_symbol_type(type, t, name) do { \
10	t = rb_is_##type##_id(rb_to_id(name)); \
11    } while (0)
12#endif
13
14#define define_symbol_type_p(type) \
15static VALUE \
16bug_sym_##type##_p(VALUE self, VALUE name) \
17{ \
18    int t; \
19    get_symbol_type(type, t, name); \
20    return (t ? Qtrue : Qfalse); \
21}
22
23#define declare_symbol_type_p(type) \
24    rb_define_singleton_method(klass, #type"?", bug_sym_##type##_p, 1);
25
26#define FOREACH_ID_TYPES(x) x(const) x(class) x(global) x(instance) x(attrset) x(local) x(junk)
27
28FOREACH_ID_TYPES(define_symbol_type_p)
29
30static VALUE
31bug_sym_attrset(VALUE self, VALUE name)
32{
33    ID id = rb_to_id(name);
34    id = rb_id_attrset(id);
35    return ID2SYM(id);
36}
37
38void
39Init_type(VALUE klass)
40{
41    FOREACH_ID_TYPES(declare_symbol_type_p);
42    rb_define_singleton_method(klass, "attrset", bug_sym_attrset, 1);
43}
44