First take on ViewPaths clean up.

actionpack/lib/action_view/paths.rb

@@ -1,46 +1,17 @@
 module ActionView #:nodoc:
   class PathSet < Array #:nodoc:
-    def self.type_cast(obj, cache = nil)
-      # TODO: Clean this up
-      if obj.is_a?(String)
-        if cache.nil?
-          cache = !defined?(Rails.application) || Rails.application.config.cache_classes
+    %w(initialize << concat insert push unshift).each do |method|
+      class_eval <<-METHOD, __FILE__, __LINE__ + 1
+        def #{method}(*args)
+          super
+          typecast!
         end
-        FileSystemResolverWithFallback.new(obj, :cache => cache)
-      else
-        obj
-      end
-    end
-
-    def initialize(*args)
-      super(*args).map! { |obj| self.class.type_cast(obj) }
-    end
-
-    def <<(obj)
-      super(self.class.type_cast(obj))
-    end
-
-    def concat(array)
-      super(array.map! { |obj| self.class.type_cast(obj) })
-    end
-
-    def insert(index, obj)
-      super(index, self.class.type_cast(obj))
-    end
-
-    def push(*objs)
-      super(*objs.map { |obj| self.class.type_cast(obj) })
-    end
-
-    def unshift(*objs)
-      super(*objs.map { |obj| self.class.type_cast(obj) })
+      METHOD
     end
 
     def find(path, details = {}, prefix = nil, partial = false)
-      template_path = path
-
-      each do |load_path|
-        if template = load_path.find(template_path, details, prefix, partial)
+      each do |resolver|
+        if template = resolver.find(path, details, prefix, partial)
           return template
         end
       end
@@ -48,33 +19,22 @@ def find(path, details = {}, prefix = nil, partial = false)
       raise ActionView::MissingTemplate.new(self, "#{prefix}/#{path}", details, partial)
     end
     
-    def exists?(path, extension = nil, prefix = nil, partial = false)
-      template_path = path.sub(/^\//, '')
-
-      each do |load_path|
-        return true if template = load_path.find(template_path, extension, prefix, partial)
-      end      
+    def exists?(path, details = {}, prefix = nil, partial = false)
+      each do |resolver|
+        if resolver.find(path, details, prefix, partial)
+          return true
+        end
+      end
       false
     end
 
-    def find_template(original_template_path, format = nil, html_fallback = true)
-      return original_template_path if original_template_path.respond_to?(:render)
-      template_path = original_template_path.sub(/^\//, '')
+  protected
 
-      each do |load_path|
-        if template = load_path.find(template_path, format)
-          return template
-        # Try to find html version if the format is javascript
-        elsif format == :js && html_fallback && template = load_path["#{template_path}.#{I18n.locale}.html"]
-          return template
-        elsif format == :js && html_fallback && template = load_path["#{template_path}.html"]
-          return template
-        end
+    def typecast!
+      each_with_index do |path, i|
+        next unless path.is_a?(String)
+        self[i] = FileSystemResolverWithFallback.new(path)
       end
-
-      return Template.new(original_template_path, original_template_path.to_s =~ /\A\// ? "" : ".") if File.file?(original_template_path)
-
-      raise MissingTemplate.new(self, original_template_path, format)
     end
   end
 end

actionpack/lib/action_view/template/resolver.rb

@@ -22,8 +22,7 @@ def self.register_detail(name, options = {})
     register_detail(:formats)  { Mime::SET.symbols }
     register_detail(:handlers) { Template::Handlers.extensions }
 
-    def initialize(options = {})
-      @cache  = options[:cache]
+    def initialize
       @cached = {}
     end
 
@@ -43,6 +42,10 @@ def find_all(name, details = {}, prefix = nil, partial = nil)
 
   private
 
+    def caching?
+      @caching ||= !defined?(Rails.application) || Rails.application.config.cache_classes
+    end
+
     # This is what child classes implement. No defaults are needed
     # because Resolver guarantees that the arguments are present and
     # normalized.
@@ -72,7 +75,7 @@ def normalize_name(name, prefix)
     end
 
     def cached(key)
-      return yield unless @cache
+      return yield unless caching?
       return @cached[key] if @cached.key?(key)
       @cached[key] = yield
     end
@@ -133,18 +136,18 @@ def path_to_details(path)
   end
 
   class FileSystemResolver < PathResolver
-    def initialize(path, options = {})
+    def initialize(path)
       raise ArgumentError, "path already is a Resolver class" if path.is_a?(Resolver)
-      super(options)
+      super()
       @path = Pathname.new(path).expand_path
     end
   end
 
   # TODO: remove hack
   class FileSystemResolverWithFallback < Resolver
-    def initialize(path, options = {})
-      super(options)
-      @paths = [FileSystemResolver.new(path, options), FileSystemResolver.new("", options), FileSystemResolver.new("/", options)]
+    def initialize(path)
+      super()
+      @paths = [FileSystemResolver.new(path), FileSystemResolver.new(""), FileSystemResolver.new("/")]
     end
 
     def find_templates(*args)

actionpack/test/lib/fixture_template.rb

@@ -1,7 +1,7 @@
 module ActionView #:nodoc:
   class FixtureResolver < PathResolver
-    def initialize(hash = {}, options = {})
-      super(options)
+    def initialize(hash = {})
+      super()
       @hash = hash
     end