Class: OpenStruct

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

Overview

backtick_javascript: true

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(hash = nil) ⇒ OpenStruct

Returns a new instance of OpenStruct.



4
5
6
7
8
9
10
11
12
 
# File 'opal/stdlib/ostruct.rb', line 4

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

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

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args) ⇒ Object 



22
23
24
25
26
27
28
29
30
31
32
33
34
 
# File 'opal/stdlib/ostruct.rb', line 22

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, '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

#table ⇒ Object (readonly)

Returns the value of attribute table.



79
80
81
 
# File 'opal/stdlib/ostruct.rb', line 79

def table
  @table
end

Instance Method Details

#==(other) ⇒ Object 



49
50
51
52
53
 
# File 'opal/stdlib/ostruct.rb', line 49

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

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

#===(other) ⇒ Object 



55
56
57
58
59
 
# File 'opal/stdlib/ostruct.rb', line 55

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

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

#[](name) ⇒ Object 



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

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

#[]=(name, value) ⇒ Object 



18
19
20
 
# File 'opal/stdlib/ostruct.rb', line 18

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

#delete_field(name) ⇒ Object 



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

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

#each_pair ⇒ Object 



41
42
43
44
45
46
47
 
# File 'opal/stdlib/ostruct.rb', line 41

def each_pair
  return enum_for :each_pair unless block_given?

  @table.each_pair do |pair|
    yield pair
  end
end

#eql?(other) ⇒ Boolean

Returns:



61
62
63
64
65
 
# File 'opal/stdlib/ostruct.rb', line 61

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

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

#hash ⇒ Object 



75
76
77
 
# File 'opal/stdlib/ostruct.rb', line 75

def hash
  @table.hash
end

#inspect ⇒ Object Also known as: to_s 



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
126
127
128
129
130
131
132
133
134
 
# File 'opal/stdlib/ostruct.rb', line 101

def inspect
  %x{
    var top = (ostruct_ids === undefined),
        ostruct_id = #{__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 do |name, value|
      "#{name}=#{value.inspect}"
    end.join ', '

    result += '>'

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

#new_ostruct_member(name) ⇒ Object 



90
91
92
93
94
95
96
97
 
# File 'opal/stdlib/ostruct.rb', line 90

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

#respond_to_missing?(mid, include_private = false) ⇒ Boolean

:nodoc:

Returns:



36
37
38
39
 
# File 'opal/stdlib/ostruct.rb', line 36

def respond_to_missing?(mid, include_private = false) # :nodoc:
  mname = mid.to_s.chomp('=').to_sym
  @table&.key?(mname) || super
end

#to_h(&block) ⇒ Object 



67
68
69
 
# File 'opal/stdlib/ostruct.rb', line 67

def to_h(&block)
  block_given? ? @table.to_h(&block) : @table.dup
end

#to_n ⇒ Object 



71
72
73
 
# File 'opal/stdlib/ostruct.rb', line 71

def to_n
  @table.to_n
end