Module: Stupidedi::Versions::FunctionalGroups::ThirtyTen::ElementTypes::Operators::Relational

Included in:
DateVal::Proper, FixnumVal::NonEmpty, FloatVal::NonEmpty, IdentifierVal::Empty, IdentifierVal::NonEmpty, StringVal::Empty, StringVal::NonEmpty
Defined in:
lib/stupidedi/versions/functional_groups/003010/element_types/operators.rb

Instance Method Summary collapse

Instance Method Details

#relational_operators(*ops) ⇒ Object 



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# File 'lib/stupidedi/versions/functional_groups/003010/element_types/operators.rb', line 71

def relational_operators(*ops)
  file, line, = Stupidedi.caller

  if ops.last.is_a?(Hash)
    options = ops.pop

    case options[:coerce]
    when String, Symbol
      coerce = options[:coerce]
    else
      raise ArgumentError,
        "must pass :coerce => :method"
    end
  else
    raise ArgumentError,
      "must pass :coerce => :method"
  end

  # Note that we can't test respond_to?(coerce) because coerce is
  # often a refinement method, like #to_d, #to_time, etc. Currently
  # respond_to? returns false on refinment methods, so we just call
  # the method and assume a NoMethodError is due to coerce (hopefully
  # not some other missing method)
  ops.each do |op|
    class_eval("      def \#{op}(other, &block)\n        begin\n          value.\#{op}(other.\#{coerce}, &block)\n        rescue NoMethodError\n          begin\n            me, he = other.coerce(self)\n            me.\#{op}(he, &block)\n          rescue NoMethodError\n            raise TypeError,\n              \"cannot coerce \\\#{other.class} to \\\#{self.class}\"\n          end\n        end\n      end\n    RUBY\n  end\nend\n", file, line.to_i - 1)