Getting basic compiling working.

git-svn-id: svn://hamptoncatlin.com/haml/branches/faster@85 7063305b-7217-0410-af8c-cdc13e5119b9

init.rb

@@ -1,4 +1,3 @@
-require 'haml/engine'
-require 'haml/helpers'
+require 'haml/template'
 
 ActionView::Base.register_template_handler('haml', Haml::Template)

lib/haml/engine.rb

@@ -13,6 +13,9 @@ module Haml
   #   puts output
   class Engine
     include Haml::Helpers
+
+    # Allow access to the precompiled template
+    attr_reader :precompiled
     
     # Keeps track of the ASCII values of the characters that begin a 
     # specially-interpreted line.
@@ -60,30 +63,19 @@ module Haml
 
       @template = template #String
       @buffer = Haml::Buffer.new
-      @precompiled = String.new
+
       @to_close_stack = []
       @tabulation = 0
-      @scope_object = Object.new if @scope_object.nil?
+
+      # Only do the first round of pre-compiling if we really need to.
+      # They might be passing in the precompiled string.
+      do_precompile if @precompiled.nil? && (@precompiled = String.new)
     end
 
     # Processes the template and returns the resulting (X)HTML code as
     # a string.
-    def to_html
-      # Process each line of the template
-      @template.each_with_index do |line, index|
-        count, line = count_soft_tabs(line)
-        suppress_render = handle_multiline(count, line, index)
-
-        if !suppress_render && count && line
-          count, line = process_line(count, line, index)
-        end
-      end
-
-      # Make sure an ending multiline gets closed
-      handle_multiline(0, nil, 0)
-
-      # Close all the open tags
-      @to_close_stack.length.times { close }
+    def to_html(scope = Object.new)
+      @scope = scope
 
       # Compile the @precompiled buffer
       compile
@@ -92,8 +84,26 @@ module Haml
       @buffer.buffer
     end
     
-    private
-
+   private
+    
+    #Precompile each line
+    def do_precompile
+      @template.each_with_index do |line, index|
+        count, line = count_soft_tabs(line)
+        suppress_render = handle_multiline(count, line, index)
+  
+        if !suppress_render && count && line
+          count, line = process_line(count, line, index)
+        end
+      end
+  
+      # Make sure an ending multiline gets closed
+      handle_multiline(0, nil, 0)
+  
+      # Close all the open tags
+      @to_close_stack.length.times { close }
+    end
+    
     # Processes a single line of HAML. <tt>count</tt> does *not* represent the
     # line number; rather, it represents the tabulation count (the number of
     # spaces before the line divided by two).

lib/haml/template.rb

@@ -4,13 +4,15 @@ require 'action_view'
 
 module Haml
   class Template
+
     def initialize(view)
       @view = view
+      @@precompiled_templates ||= {}
     end
 
-    def render(template, local_assigns={})
+    def render(template_file_name, local_assigns={})
       assigns = @view.assigns.dup
-  
+
       # Do content for layout on its own to keep things working in partials
       if content_for_layout = @view.instance_variable_get("@content_for_layout")
         assigns['content_for_layout'] = content_for_layout
@@ -24,23 +26,50 @@ module Haml
         end
         # Set all the local assigns
         local_assigns.each do |key,val|
-          class << self; self; end.send(:define_method, key) { val }
+          class << self; self; end.send(:define_method, key) &:val
         end
       end
-      
-      Haml::Engine.new(template, :scope_object => @view).to_html
+
+      if @precompiled = get_precompiled(template_file_name)
+        engine = Haml::Engine.new("", :precompiled => @precompiled)
+      else
+        engine = Haml::Engine.new(File.read(template_file_name))
+        set_precompiled(template_file_name, engine.precompiled)
+      end
+
+      engine.to_html(@view)
+
+    end
+
+    def get_precompiled(filename)
+      # Do we have it on file? Is it new enough?
+      if (precompiled, precompiled_on = @@precompiled_templates[filename]) &&
+             (precompiled_on == File.mtime(filename).to_i)
+        precompiled
+      end
+    end
+
+    def set_precompiled(filename, precompiled)
+      @@precompiled_templates[filename] = [precompiled, File.mtime(filename).to_i]
     end
   end
 end
 
-module ActionView
-  class Base
-    attr :haml_filename, true
-  
-    alias haml_old_render_file render_file
-    def render_file(template_path, use_full_path = true, local_assigns = {})
-      @haml_filename = File.basename(template_path)
-      haml_old_render_file(template_path, use_full_path, local_assigns)
+class ActionView::Base
+  attr :haml_filename, true
+
+  alias_method :haml_old_render_file, :render_file
+  def render_file(template_path, use_full_path = true, local_assigns = {})
+    @haml_filename = File.basename(template_path)
+    haml_old_render_file(template_path, use_full_path, local_assigns)
+  end
+
+  alias_method :read_template_file_old, :read_template_file
+  def read_template_file(template_path, extension)
+    if extension =~ /haml/i
+      template_path
+    else
+      read_template_file_old(template_path, extension)
     end
   end
 end