Sha256: 72f8a09633f7aac3442202469e0434b9a2d89ca39207a914b52502cf95e83243
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Size: 1.44 KB
Versions: 7
Compression:
Stored size: 1.44 KB
Contents
class Object
# copy from active_support
def delegate(*methods)
options = methods.pop
unless options.is_a?(Hash) && to = options[:to]
raise ArgumentError, "Delegation needs a target. Supply an options hash with a :to key as the last argument (e.g. delegate :hello, :to => :greeter)."
end
methods.each do |method|
module_eval(<<-EOS, "(__DELEGATION__)", 1)
def #{method}(*args, &block)
#{to}.__send__(#{method.inspect}, *args, &block)
end
EOS
end
end unless defined? delegate
end
class Object
unless defined? instance_exec # 1.9
module InstanceExecMethods #:nodoc:
end
include InstanceExecMethods
# Evaluate the block with the given arguments within the context of
# this object, so self is set to the method receiver.
#
# From Mauricio's http://eigenclass.org/hiki/bounded+space+instance_exec
def instance_exec(*args, &block)
begin
old_critical, Thread.critical = Thread.critical, true
n = 0
n += 1 while respond_to?(method_name = "__instance_exec#{n}")
InstanceExecMethods.module_eval { define_method(method_name, &block) }
ensure
Thread.critical = old_critical
end
begin
send(method_name, *args)
ensure
InstanceExecMethods.module_eval { remove_method(method_name) } rescue nil
end
end
end
end
class Object
def deep_copy
Marshal.load(Marshal.dump(self))
end unless defined? deep_copy
end
Version data entries
7 entries across 7 versions & 1 rubygems