vendor/rails/activesupport/lib/active_support/vendor/tzinfo-0.3.12/tzinfo/ruby_core_support.rb

   1 #--
   2 # Copyright (c) 2008 Philip Ross
   3 #
   4 # Permission is hereby granted, free of charge, to any person obtaining a copy
   5 # of this software and associated documentation files (the "Software"), to deal
   6 # in the Software without restriction, including without limitation the rights
   7 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   8 # copies of the Software, and to permit persons to whom the Software is
   9 # furnished to do so, subject to the following conditions:
  10 #
  11 # The above copyright notice and this permission notice shall be included in all
  12 # copies or substantial portions of the Software.
  13 #
  14 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  19 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  20 # THE SOFTWARE.
  21 #++
  22
  23 require 'date'
  24 require 'rational'
  25
  26 module TZInfo
  27
  28   # Methods to support different versions of Ruby.
  29   module RubyCoreSupport #:nodoc:
  30
  31     # Use Rational.new! for performance reasons in Ruby 1.8.
  32     # This has been removed from 1.9, but Rational performs better.
  33     if Rational.respond_to? :new!
  34       def self.rational_new!(numerator, denominator = 1)
  35         Rational.new!(numerator, denominator)
  36       end
  37     else
  38       def self.rational_new!(numerator, denominator = 1)
  39         Rational(numerator, denominator)
  40       end
  41     end
  42
  43     # Ruby 1.8.6 introduced new! and deprecated new0.
  44     # Ruby 1.9.0 removed new0.
  45     # We still need to support new0 for older versions of Ruby.
  46     if DateTime.respond_to? :new!
  47       def self.datetime_new!(ajd = 0, of = 0, sg = Date::ITALY)
  48         DateTime.new!(ajd, of, sg)
  49       end
  50     else
  51       def self.datetime_new!(ajd = 0, of = 0, sg = Date::ITALY)
  52         DateTime.new0(ajd, of, sg)
  53       end
  54     end
  55   end
  56 end