ruby--ruby/lib/yaml.rb

44 lines
764 B
Ruby

module YAML
class EngineManager # :nodoc:
attr_reader :yamler
def initialize
@yamler = nil
end
def syck?
'syck' == @yamler
end
def yamler= engine
raise(ArgumentError, "bad engine") unless %w{syck psych}.include?(engine)
require engine
Object.class_eval <<-eorb, __FILE__, __LINE__ + 1
remove_const 'YAML'
YAML = #{engine.capitalize}
remove_method :to_yaml
alias :to_yaml :#{engine}_to_yaml
eorb
@yamler = engine
engine
end
end
ENGINE = YAML::EngineManager.new
end
engine = (!defined?(Syck) && defined?(Psych) ? 'psych' : 'syck')
module Syck
ENGINE = YAML::ENGINE
end
module Psych
ENGINE = YAML::ENGINE
end
YAML::ENGINE.yamler = engine