1 files changed, 125 insertions, 0 deletions
diff --git a/actionpack/lib/action_dispatch/journey/route.rb b/actionpack/lib/action_dispatch/journey/route.rb
new file mode 100644
index 0000000000..3b609a184d
--- /dev/null
+++ b/actionpack/lib/action_dispatch/journey/route.rb
@@ -0,0 +1,125 @@
+module ActionDispatch
+  module Journey # :nodoc:
+    class Route # :nodoc:
+      attr_reader :app, :path, :defaults, :name
+
+      attr_reader :constraints
+      alias :conditions :constraints
+
+      attr_accessor :precedence
+
+      ##
+      # +path+ is a path constraint.
+      # +constraints+ is a hash of constraints to be applied to this route.
+      def initialize(name, app, path, constraints, defaults = {})
+        @name        = name
+        @app         = app
+        @path        = path
+
+        @constraints = constraints
+        @defaults    = defaults
+        @required_defaults = nil
+        @required_parts    = nil
+        @parts             = nil
+        @decorated_ast     = nil
+        @precedence        = 0
+        @path_formatter    = @path.build_formatter
+      end
+
+      def ast
+        @decorated_ast ||= begin
+          decorated_ast = path.ast
+          decorated_ast.grep(Nodes::Terminal).each { |n| n.memo = self }
+          decorated_ast
+        end
+      end
+
+      def requirements # :nodoc:
+        # needed for rails `rake routes`
+        path.requirements.merge(@defaults).delete_if { |_,v|
+          /.+?/ == v
+        }
+      end
+
+      def segments
+        path.names
+      end
+
+      def required_keys
+        required_parts + required_defaults.keys
+      end
+
+      def score(constraints)
+        required_keys = path.required_names
+        supplied_keys = constraints.map { |k,v| v && k.to_s }.compact
+
+        return -1 unless (required_keys - supplied_keys).empty?
+
+        score = (supplied_keys & path.names).length
+        score + (required_defaults.length * 2)
+      end
+
+      def parts
+        @parts ||= segments.map(&:to_sym)
+      end
+      alias :segment_keys :parts
+
+      def format(path_options)
+        @path_formatter.evaluate path_options
+      end
+
+      def optional_parts
+        path.optional_names.map(&:to_sym)
+      end
+
+      def required_parts
+        @required_parts ||= path.required_names.map(&:to_sym)
+      end
+
+      def required_default?(key)
+        (constraints[:required_defaults] || []).include?(key)
+      end
+
+      def required_defaults
+        @required_defaults ||= @defaults.dup.delete_if do |k,_|
+          parts.include?(k) || !required_default?(k)
+        end
+      end
+
+      def glob?
+        !path.spec.grep(Nodes::Star).empty?
+      end
+
+      def dispatcher?
+        @app.dispatcher?
+      end
+
+      def matches?(request)
+        constraints.all? do |method, value|
+          next true unless request.respond_to?(method)
+
+          case value
+          when Regexp, String
+            value === request.send(method).to_s
+          when Array
+            value.include?(request.send(method))
+          when TrueClass
+            request.send(method).present?
+          when FalseClass
+            request.send(method).blank?
+          else
+            value === request.send(method)
+          end
+        end
+      end
+
+      def ip
+        constraints[:ip] || //
+      end
+
+      def verb
+        constraints[:request_method] || //
+      end
+    end
+  end
+end