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## # Used to implement Module#autoload. class Autoload attr_reader :name attr_reader :scope attr_reader :path attr_reader :original_path def initialize(name, scope, path) @name = name @scope = scope @original_path = path @path, = __split_path__(path) Autoload.add(self) end def call require(path) scope.const_get(name) end def discard scope.__send__(:remove_const, name) end class << self def autoloads @autoloads ||= [] end def add(al) autoloads << al end ## # ruthlessly taken from Array#delete # modified to return after the first one # This code is specific to Autoload, see line 52 # for the coupling. It calls #path on the Autoload object def delete_first(array, obj) i = array.start tot = array.start + array.total already_placed = false # initialize our check # Leaves the tuple to the original size still while i < tot if array.tuple.at(i) == obj j = i i += 1 while i < tot if (array.tuple.at(i).path != obj) || already_placed array.tuple.put(j, array.tuple.at(i)) j += 1 else already_placed = true # move all the others if we placed one end i += 1 end array.total = j - array.start return obj end i += 1 end yield if block_given? end def remove(path) al = delete_first(autoloads, path) al.discard if al end end end __END__ ## # Used to implement Module#autoload. class Autoload attr_reader :name attr_reader :scope attr_reader :path attr_reader :original_path def initialize(name, scope, path) @name = name @scope = scope @original_path = path @path, = __split_path__(path) Autoload.add(self) end def call require(path) scope.const_get(name) end def discard scope.__send__(:remove_const, name) end class << self def autoloads @autoloads ||= {} end def add(al) autoloads[al.path] = al end def remove(path) al = autoloads.delete(path) al.discard if al end end end

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