member?(p1)
public
Returns true if obj is an element of rng, false
otherwise. If beg and end are numeric,
comparison is done according magnitude of values.
("a".."z").include?("g")
("a".."z").include?("A")
static VALUE
range_include(VALUE range, VALUE val)
{
VALUE beg = RANGE_BEG(range);
VALUE end = RANGE_END(range);
int nv = FIXNUM_P(beg) || FIXNUM_P(end) ||
rb_obj_is_kind_of(beg, rb_cNumeric) ||
rb_obj_is_kind_of(end, rb_cNumeric);
if (nv ||
!NIL_P(rb_check_to_integer(beg, "to_int")) ||
!NIL_P(rb_check_to_integer(end, "to_int"))) {
if (r_le(beg, val)) {
if (EXCL(range)) {
if (r_lt(val, end))
return Qtrue;
}
else {
if (r_le(val, end))
return Qtrue;
}
}
return Qfalse;
}
else if (TYPE(beg) == T_STRING && TYPE(end) == T_STRING &&
RSTRING_LEN(beg) == 1 && RSTRING_LEN(end) == 1) {
if (NIL_P(val)) return Qfalse;
if (TYPE(val) == T_STRING) {
if (RSTRING_LEN(val) == 0 || RSTRING_LEN(val) > 1)
return Qfalse;
else {
char b = RSTRING_PTR(beg)[0];
char e = RSTRING_PTR(end)[0];
char v = RSTRING_PTR(val)[0];
if (ISASCII(b) && ISASCII(e) && ISASCII(v)) {
if (b <= v && v < e) return Qtrue;
if (!EXCL(range) && v == e) return Qtrue;
return Qfalse;
}
}
}
}
/* TODO: ruby_frame->this_func = rb_intern("include?"); */
return rb_call_super(1, &val);
}