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
|
class Module
# Create a toggle attribute. This creates two methods for
# each given name. One is a form of tester and the other
# is used to toggle the value.
#
# attr_accessor! :a
#
# is equivalent to
#
# def a?
# @a
# end
#
# def a!(value=true)
# @a = value
# self
# end
#
# CREDIT: Trans
def attr_accessor!(*args)
attr_reader!(*args) + attr_writer!(*args)
end
alias_method :attr_toggler, :attr_accessor!
alias_method :alias_switcher, :alias_accessor!
# Create aliases for flag accessors.
#
# CREDIT: Trans
def alias_accessor!(*args)
orig = args.last
args = args - [orig]
args.each do |name|
alias_method("#{name}?", "#{orig}?")
alias_method("#{name}!", "#{orig}!")
end
end
# Create a flaggable attribute. This creates a single methods
# used to set an attribute to "true".
#
# attr_writer! :a
#
# is equivalent to
#
# def a!(value=true)
# @a = value
# self
# end
#
def attr_writer!(*args)
code, made = '', []
args.each do |a|
code << %{
def #{a}!(value=true)
@#{a} = value
self
end
}
made << "#{a}!".to_sym
end
module_eval code
made
end
# Create aliases for flag writer.
#
# CREDIT: Trans
def alias_writer!(*args)
orig = args.last
args = args - [orig]
args.each do |name|
alias_method("#{name}!", "#{orig}!")
end
end
end
|
