Contents

module BindingOfCallers
  module Reveal

    def _binding
      instance_variable_defined?(:@_binding) ? @_binding : self
    end

    def inspect
      "#<#{self.class}:#{object_id} #{klass}#{call_symbol}#{frame_env} #{file}:#{line}>"
    end

    def iv *args
      case args.count
      when 0
        all_iv
      when 1
        the_iv args[0]
      when 2
        set_iv(*args)
      end
    end

    def lv *args
      case args.count
      when 0
        all_lv
      when 1
        the_lv args[0]
      when 2
        set_lv(*args)
      end
    end

    def klass
      @klass ||= _binding.eval(singleton_method? ? 'self' : 'self.class')
    end

    def singleton_method?
      return @sm if instance_variable_defined? :@sm
      class_name = _binding.eval 'self.class.name'
      @sm = (class_name == 'Module' or class_name == 'Class')
    end

    def call_symbol
      @call_sym ||= singleton_method? ? '.' : '#'
    end

    def file
      _binding.eval('__FILE__')
    end

    def line
      _binding.eval('__LINE__')
    end

    def frame_env
      _binding.frame_description
    end

    def env_type
      _binding.frame_type
    end

    private

    def all_iv
      _binding.eval <<-EOS
        instance_variables.each_with_object({}) do |iv_name, vars|
          vars[iv_name] = instance_variable_get(iv_name)
        end
      EOS
    end

    def the_iv name
      binding_self.instance_variable_get name
    end

    def set_iv name, value
      binding_self.instance_variable_set name, value
    end

    def binding_self
      _binding.eval "self"
    end

    def all_lv
      _binding.local_variables.each_with_object({}) do |lv_name, vars|
        vars[lv_name] = the_lv lv_name
      end
    end

    def the_lv name
      _binding.local_variable_get name
    end

    def set_lv name, value
      _binding.local_variable_set name, value
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
binding_of_callers-0.1.4	lib/binding_of_callers/reveal.rb
binding_of_callers-0.1.3	lib/binding_of_callers/reveal.rb