blob: 36886d50cb1b28822ad61e607cd4e16b8826091d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
##
# Range
#
# ISO 15.2.14
class Range
##
# Calls the given block for each element of +self+
# and pass the respective element.
#
# ISO 15.2.14.4.4
def each(&block)
return to_enum :each unless block
val = self.begin
last = self.end
if val.kind_of?(Fixnum) && last.nil?
i = val
while true
block.call(i)
i += 1
end
return self
end
if val.kind_of?(String) && last.nil?
if val.respond_to? :__upto_endless
return val.__upto_endless(&block)
else
str_each = true
end
end
if val.kind_of?(Integer) && last.kind_of?(Integer) # fixnums are special
lim = last
lim += 1 unless exclude_end?
i = val
while i < lim
block.call(i)
i += 1
end
return self
end
if val.kind_of?(String) && last.kind_of?(String) # strings are special
if val.respond_to? :upto
return val.upto(last, exclude_end?, &block)
else
str_each = true
end
end
raise TypeError, "can't iterate" unless val.respond_to? :succ
return self if (val <=> last) > 0
while (val <=> last) < 0
block.call(val)
val = val.succ
if str_each
break if val.size > last.size
end
end
block.call(val) if !exclude_end? && (val <=> last) == 0
self
end
# redefine #hash 15.3.1.3.15
def hash
h = first.hash ^ last.hash
h += 1 if self.exclude_end?
h
end
def to_a
raise RangeError, "cannot convert endless range to an array" if self.last.nil?
super
end
end
##
# Range is enumerable
#
# ISO 15.2.14.3
class Range
include Enumerable
end
|
