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-rw-r--r--ruby_1_8_5/lib/ostruct.rb146
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diff --git a/ruby_1_8_5/lib/ostruct.rb b/ruby_1_8_5/lib/ostruct.rb
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-#
-# = ostruct.rb: OpenStruct implementation
-#
-# Author:: Yukihiro Matsumoto
-# Documentation:: Gavin Sinclair
-#
-# OpenStruct allows the creation of data objects with arbitrary attributes.
-# See OpenStruct for an example.
-#
-
-#
-# OpenStruct allows you to create data objects and set arbitrary attributes.
-# For example:
-#
-# require 'ostruct'
-#
-# record = OpenStruct.new
-# record.name = "John Smith"
-# record.age = 70
-# record.pension = 300
-#
-# puts record.name # -> "John Smith"
-# puts record.address # -> nil
-#
-# It is like a hash with a different way to access the data. In fact, it is
-# implemented with a hash, and you can initialize it with one.
-#
-# hash = { "country" => "Australia", :population => 20_000_000 }
-# data = OpenStruct.new(hash)
-#
-# p data # -> <OpenStruct country="Australia" population=20000000>
-#
-class OpenStruct
- #
- # Create a new OpenStruct object. The optional +hash+, if given, will
- # generate attributes and values. For example.
- #
- # require 'ostruct'
- # hash = { "country" => "Australia", :population => 20_000_000 }
- # data = OpenStruct.new(hash)
- #
- # p data # -> <OpenStruct country="Australia" population=20000000>
- #
- # By default, the resulting OpenStruct object will have no attributes.
- #
- def initialize(hash=nil)
- @table = {}
- if hash
- for k,v in hash
- @table[k.to_sym] = v
- new_ostruct_member(k)
- end
- end
- end
-
- # Duplicate an OpenStruct object members.
- def initialize_copy(orig)
- super
- @table = @table.dup
- end
-
- def marshal_dump
- @table
- end
- def marshal_load(x)
- @table = x
- @table.each_key{|key| new_ostruct_member(key)}
- end
-
- def new_ostruct_member(name)
- name = name.to_sym
- unless self.respond_to?(name)
- meta = class << self; self; end
- meta.send(:define_method, name) { @table[name] }
- meta.send(:define_method, :"#{name}=") { |x| @table[name] = x }
- end
- end
-
- def method_missing(mid, *args) # :nodoc:
- mname = mid.id2name
- len = args.length
- if mname =~ /=$/
- if len != 1
- raise ArgumentError, "wrong number of arguments (#{len} for 1)", caller(1)
- end
- if self.frozen?
- raise TypeError, "can't modify frozen #{self.class}", caller(1)
- end
- mname.chop!
- self.new_ostruct_member(mname)
- @table[mname.intern] = args[0]
- elsif len == 0
- @table[mid]
- else
- raise NoMethodError, "undefined method `#{mname}' for #{self}", caller(1)
- end
- end
-
- #
- # Remove the named field from the object.
- #
- def delete_field(name)
- @table.delete name.to_sym
- end
-
- InspectKey = :__inspect_key__ # :nodoc:
-
- #
- # Returns a string containing a detailed summary of the keys and values.
- #
- def inspect
- str = "#<#{self.class}"
-
- Thread.current[InspectKey] ||= []
- if Thread.current[InspectKey].include?(self) then
- str << " ..."
- else
- first = true
- for k,v in @table
- str << "," unless first
- first = false
-
- Thread.current[InspectKey] << v
- begin
- str << " #{k}=#{v.inspect}"
- ensure
- Thread.current[InspectKey].pop
- end
- end
- end
-
- str << ">"
- end
- alias :to_s :inspect
-
- attr_reader :table # :nodoc:
- protected :table
-
- #
- # Compare this object and +other+ for equality.
- #
- def ==(other)
- return false unless(other.kind_of?(OpenStruct))
- return @table == other.table
- end
-end