Contents

module Quantify

  def self.configure &block
    self.module_eval &block if block
  end

  module ExtendedMethods

    # Provides syntactic sugar for accessing units via the #for method.
    # Specify:
    #
    #  Unit.degree_celsius
    #
    # rather than Unit.for :degree_celsius
    #
    def method_missing(method, *args, &block)
      if method.to_s =~ /((si|non_si|compound)_)?(non_(prefixed)_)?((base|derived|benchmark)_)?units(_by_(name|symbol|label))?/
        if $2 or $4 or $6
          conditions = []
          conditions << "unit.is_#{$2}_unit?" if $2
          conditions << "!unit.is_prefixed_unit?" if $4
          conditions << "unit.is_#{$6}_unit?" if $6
          units = Unit.units.select { |unit| instance_eval(conditions.join(" and ")) }
        else
          units = Unit.units
        end
        return_format = ( $8 ? $8.to_sym : nil )
        units.map(&return_format)
      elsif unit = Unit.for(method)
        return unit
      else
        super
      end
    end
    
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
quantify-1.0.4	lib/quantify/quantify.rb
quantify-1.0.3	lib/quantify/quantify.rb
quantify-1.0.2	lib/quantify/quantify.rb
quantify-1.0.1	lib/quantify/quantify.rb
quantify-1.0.0	lib/quantify/quantify.rb