Class: OpenStruct

Inherits:
Object show all
Defined in:
opal/stdlib/ostruct.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(hash = nil) ⇒ OpenStruct

Returns a new instance of OpenStruct



2
3
4
5
6
7
8
# File 'opal/stdlib/ostruct.rb', line 2

def initialize(hash = nil)
  @table = {}

  hash.each_pair {|key, value|
    @table[new_ostruct_member(key)] = value
  } if hash
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args) ⇒ Object



18
19
20
21
22
23
24
25
26
27
28
29
30
# File 'opal/stdlib/ostruct.rb', line 18

def method_missing(name, *args)
  if args.length > 2
    raise NoMethodError.new("undefined method `#{name}' for #<OpenStruct>", name)
  end
  if name.end_with? '='
    if args.length != 1
      raise ArgumentError.new "wrong number of arguments (0 for 1)"
    end
    @table[new_ostruct_member(name[0 .. -2])] = args[0]
  else
    @table[name.to_sym]
  end
end

Instance Attribute Details

#tableObject (readonly)

Returns the value of attribute table



70
71
72
# File 'opal/stdlib/ostruct.rb', line 70

def table
  @table
end

Instance Method Details

#==(other) ⇒ Object



40
41
42
43
44
# File 'opal/stdlib/ostruct.rb', line 40

def ==(other)
  return false unless other.is_a?(OpenStruct)

  @table == other.instance_variable_get(:@table)
end

#===(other) ⇒ Object



46
47
48
49
50
# File 'opal/stdlib/ostruct.rb', line 46

def ===(other)
  return false unless other.is_a?(OpenStruct)

  @table === other.instance_variable_get(:@table)
end

#[](name) ⇒ Object



10
11
12
# File 'opal/stdlib/ostruct.rb', line 10

def [](name)
  @table[name.to_sym]
end

#[]=(name, value) ⇒ Object



14
15
16
# File 'opal/stdlib/ostruct.rb', line 14

def []=(name, value)
  @table[new_ostruct_member(name)] = value
end

#delete_field(name) ⇒ Object



72
73
74
75
76
77
78
79
# File 'opal/stdlib/ostruct.rb', line 72

def delete_field(name)
  sym = name.to_sym
  begin
    singleton_class.__send__(:remove_method, sym, "#{sym}=")
  rescue NameError
  end
  @table.delete sym
end

#each_pairObject



32
33
34
35
36
37
38
# File 'opal/stdlib/ostruct.rb', line 32

def each_pair
  return enum_for :each_pair unless block_given?

  @table.each_pair {|pair|
    yield pair
  }
end

#eql?(other) ⇒ Boolean

Returns:



52
53
54
55
56
# File 'opal/stdlib/ostruct.rb', line 52

def eql?(other)
  return false unless other.is_a?(OpenStruct)

  @table.eql? other.instance_variable_get(:@table)
end

#hashObject



66
67
68
# File 'opal/stdlib/ostruct.rb', line 66

def hash
  @table.hash
end

#inspectObject Also known as: to_s



92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
# File 'opal/stdlib/ostruct.rb', line 92

def inspect
  %x{
    var top = (ostruct_ids === undefined),
        ostruct_id = #{self.__id__};
  }
  begin
    result = "#<#{self.class}"
    %x{
      if (top) {
        ostruct_ids = {};
      }
      if (ostruct_ids.hasOwnProperty(ostruct_id)) {
        return result + ' ...>';
      }
      ostruct_ids[ostruct_id] = true;
    }

    result += ' ' if @table.any?

    result += each_pair.map {|name, value|
      "#{name}=#{value.inspect}"
    }.join ", "

    result += ">"

    result    
  ensure
    %x{
      if (top) {
        ostruct_ids = undefined;
      }
    }
  end
end

#new_ostruct_member(name) ⇒ Object



81
82
83
84
85
86
87
88
# File 'opal/stdlib/ostruct.rb', line 81

def new_ostruct_member(name)
  name = name.to_sym
  unless respond_to?(name)
    define_singleton_method(name) { @table[name] }
    define_singleton_method("#{name}=") { |x| @table[name] = x }
  end
  name
end

#to_hObject



58
59
60
# File 'opal/stdlib/ostruct.rb', line 58

def to_h
  @table.dup
end

#to_nObject



62
63
64
# File 'opal/stdlib/ostruct.rb', line 62

def to_n
  @table.to_n
end