Module: Kernel

Defined in:
lib/nakajima/likewise.rb,
lib/nakajima/core_ext/kernel.rb

Overview

likewise require by Pat Nakajima because I’ve been drinking more than Jack Barnette and to annoy John Susser and Aaron Peterson

use to require files relative to the current file:

likewise do

require "foo"         # require current-dir/lib
require "lib/foo"     # require current-dir/lib/foo

end

Instance Method Summary collapse

Instance Method Details

#blank_context(*args, &block) ⇒ Object 



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# File 'lib/nakajima/core_ext/kernel.rb', line 2

def blank_context(*args, &block)
  ivars = args.extract_options!
  
  args.push(/^__/)
  
  klass = Class.new do
    instance_methods.each do |m|
      undef_method(m) unless args.any? { |pattern| m =~ pattern }
    end
  end
  
  klass.class_eval(&block) if block_given?
  instance = klass.new
  setter = Object.instance_method(:instance_variable_set).bind(instance)
  ivars.each { |key, value| setter.call("@#{key}", value) }
  instance
end

#likewise(&blk) ⇒ Object 



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# File 'lib/nakajima/likewise.rb', line 14

def likewise(&blk)
  Class.new {
    instance_methods.each { |m| undef_method(m) unless m.to_s =~ /__/ }

    def initialize(&block)
      @outside = eval('self', block.binding)
      Object.instance_method(:instance_eval).bind(self).call(&block)
    end

    def require(path)
      super(File.join(File.dirname(caller.first.split(':').first), path))
    end

    def method_missing(sym, *args, &block)
      @outside.send(sym, *args, &block)
    end
  }.new(&blk)
end