--- /dev/null
+class MissingSourceFile < LoadError #:nodoc:
+ attr_reader :path
+ def initialize(message, path)
+ super(message)
+ @path = path
+ end
+
+ def is_missing?(path)
+ path.gsub(/\.rb$/, '') == self.path.gsub(/\.rb$/, '')
+ end
+
+ def self.from_message(message)
+ REGEXPS.each do |regexp, capture|
+ match = regexp.match(message)
+ return MissingSourceFile.new(message, match[capture]) unless match.nil?
+ end
+ nil
+ end
+
+ REGEXPS = [
+ [/^no such file to load -- (.+)$/i, 1],
+ [/^Missing \w+ (file\s*)?([^\s]+.rb)$/i, 2],
+ [/^Missing API definition file in (.+)$/i, 1]
+ ] unless defined?(REGEXPS)
+end
+
+module ActiveSupport #:nodoc:
+ module CoreExtensions #:nodoc:
+ module LoadErrorExtensions #:nodoc:
+ module LoadErrorClassMethods #:nodoc:
+ def new(*args)
+ (self == LoadError && MissingSourceFile.from_message(args.first)) || super
+ end
+ end
+ ::LoadError.extend(LoadErrorClassMethods)
+ end
+ end
+end