Gecko [ lorencats.com ]

Name	Size	Permission
actor	[ DIR ]	drwxr-xr-x
atomic	[ DIR ]	drwxr-xr-x
atomic_reference	[ DIR ]	drwxr-xr-x
channel	[ DIR ]	drwxr-xr-x
collection	[ DIR ]	drwxr-xr-x
concern	[ DIR ]	drwxr-xr-x
edge	[ DIR ]	drwxr-xr-x
executor	[ DIR ]	drwxr-xr-x
synchronization	[ DIR ]	drwxr-xr-x
thread_safe	[ DIR ]	drwxr-xr-x
utility	[ DIR ]	drwxr-xr-x
actor.rb	3.53 KB	-rw-r--r--
agent.rb	21.58 KB	-rw-r--r--
array.rb	1.05 KB	-rw-r--r--
async.rb	17.7 KB	-rw-r--r--
atom.rb	8.85 KB	-rw-r--r--
atomics.rb	1.94 KB	-rw-r--r--
channel.rb	6.49 KB	-rw-r--r--
configuration.rb	6.57 KB	-rw-r--r--
constants.rb	204 B	-rw-r--r--
dataflow.rb	2.15 KB	-rw-r--r--
delay.rb	6.73 KB	-rw-r--r--
edge.rb	1.26 KB	-rw-r--r--
errors.rb	2.16 KB	-rw-r--r--
exchanger.rb	12.81 KB	-rw-r--r--
executors.rb	1.02 KB	-rw-r--r--
future.rb	4.12 KB	-rw-r--r--
hash.rb	999 B	-rw-r--r--
immutable_struct.rb	2.05 KB	-rw-r--r--
ivar.rb	7.24 KB	-rw-r--r--
lazy_register.rb	2.28 KB	-rw-r--r--
map.rb	7.72 KB	-rw-r--r--
maybe.rb	8.01 KB	-rw-r--r--
mutable_struct.rb	8.43 KB	-rw-r--r--
mvar.rb	7.19 KB	-rw-r--r--
options.rb	1.25 KB	-rw-r--r--
promise.rb	18.53 KB	-rw-r--r--
scheduled_task.rb	10.73 KB	-rw-r--r--
settable_struct.rb	3.67 KB	-rw-r--r--
synchronization.rb	1.05 KB	-rw-r--r--
timer_task.rb	11.74 KB	-rw-r--r--
tuple.rb	2.98 KB	-rw-r--r--
tvar.rb	5.91 KB	-rw-r--r--
version.rb	72 B	-rw-r--r--

Code Editor : settable_struct.rb

require 'concurrent/synchronization/abstract_struct'
require 'concurrent/errors'
require 'concurrent/synchronization'

module Concurrent

# An thread-safe, write-once variation of Ruby's standard `Struct`.
  # Each member can have its value set at most once, either at construction
  # or any time thereafter. Attempting to assign a value to a member
  # that has already been set will result in a `Concurrent::ImmutabilityError`.
  #
  # @see http://ruby-doc.org/core-2.2.0/Struct.html Ruby standard library `Struct`
  # @see http://en.wikipedia.org/wiki/Final_(Java) Java `final` keyword
  module SettableStruct
    include Synchronization::AbstractStruct

# @!macro struct_values
    def values
      synchronize { ns_values }
    end
    alias_method :to_a, :values

# @!macro struct_values_at
    def values_at(*indexes)
      synchronize { ns_values_at(indexes) }
    end

# @!macro struct_inspect
    def inspect
      synchronize { ns_inspect }
    end
    alias_method :to_s, :inspect

# @!macro struct_merge
    def merge(other, &block)
      synchronize { ns_merge(other, &block) }
    end

# @!macro struct_to_h
    def to_h
      synchronize { ns_to_h }
    end

# @!macro struct_get
    def [](member)
      synchronize { ns_get(member) }
    end

# @!macro struct_equality
    def ==(other)
      synchronize { ns_equality(other) }
    end

# @!macro struct_each
    def each(&block)
      return enum_for(:each) unless block_given?
      synchronize { ns_each(&block) }
    end

# @!macro struct_each_pair
    def each_pair(&block)
      return enum_for(:each_pair) unless block_given?
      synchronize { ns_each_pair(&block) }
    end

# @!macro struct_select
    def select(&block)
      return enum_for(:select) unless block_given?
      synchronize { ns_select(&block) }
    end

# @!macro struct_set
    #
    # @raise [Concurrent::ImmutabilityError] if the given member has already been set
    def []=(member, value)
      if member.is_a? Integer
        length = synchronize { @values.length }
        if member >= length
          raise IndexError.new("offset #{member} too large for struct(size:#{length})")
        end
        synchronize do
          unless @values[member].nil?
            raise Concurrent::ImmutabilityError.new('struct member has already been set')
          end
          @values[member] = value
        end
      else
        send("#{member}=", value)
      end
    rescue NoMethodError
      raise NameError.new("no member '#{member}' in struct")
    end

# @!macro struct_new
    def self.new(*args, &block)
      clazz_name = nil
      if args.length == 0
        raise ArgumentError.new('wrong number of arguments (0 for 1+)')
      elsif args.length > 0 && args.first.is_a?(String)
        clazz_name = args.shift
      end
      FACTORY.define_struct(clazz_name, args, &block)
    end

FACTORY = Class.new(Synchronization::LockableObject) do
      def define_struct(name, members, &block)
        synchronize do
          clazz = Synchronization::AbstractStruct.define_struct_class(SettableStruct, Synchronization::LockableObject, name, members, &block)
          members.each_with_index do |member, index|
            clazz.send(:define_method, member) do
              synchronize { @values[index] }
            end
            clazz.send(:define_method, "#{member}=") do |value|
              synchronize do
                unless @values[index].nil?
                  raise Concurrent::ImmutabilityError.new('struct member has already been set')
                end
                @values[index] = value
              end
            end
          end
          clazz
        end
      end
    end.new
    private_constant :FACTORY
  end
end

${this.title}

Code Editor : settable_struct.rb