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unless Proc.method_defined? :lambda?
require 'backports/tools/alias_method_chain'
class Proc
# Standard in Ruby 1.9. See official documentation[http://ruby-doc.org/core-1.9/classes/Proc.html]
def lambda?
!!__is_lambda__
end
attr_accessor :__is_lambda__
private :__is_lambda__
private :__is_lambda__=
end
class Method
def to_proc_with_lambda_tracking
proc = to_proc_without_lambda_tracking
proc.send :__is_lambda__=, true
proc
end
Backports.alias_method_chain self, :to_proc, :lambda_tracking
end
module Kernel
def lambda_with_lambda_tracking(&block)
l = lambda_without_lambda_tracking(&block)
l.send :__is_lambda__=, true unless block.send(:__is_lambda__) == false
l
end
def proc_with_lambda_tracking(&block)
l = proc_without_lambda_tracking(&block)
l.send :__is_lambda__=, block.send(:__is_lambda__) == true
l
end
Backports.alias_method_chain self, :lambda, :lambda_tracking
Backports.alias_method_chain self, :proc, :lambda_tracking
end
end
|
