split mode specific code for structured folding

into separate files

lib/ace/mode/python.js

@@ -42,24 +42,19 @@ var oop = require("../lib/oop");
 var TextMode = require("./text").Mode;
 var Tokenizer = require("../tokenizer").Tokenizer;
 var PythonHighlightRules = require("./python_highlight_rules").PythonHighlightRules;
-var MatchingBraceOutdent = require("./matching_brace_outdent").MatchingBraceOutdent;
+var PythonFoldMode = require("./folding/python").FoldMode;
 var Range = require("../range").Range;
 
 var Mode = function() {
     this.$tokenizer = new Tokenizer(new PythonHighlightRules().getRules());
+    this.foldingRules = new PythonFoldMode();
 };
 oop.inherits(Mode, TextMode);
 
 (function() {
 
-    this.foldingRules = {
-        foldingStartMarker: /\:(:?\s*)?(:?#.*)?$/,
-        getFoldWidgetRange: "indentationBlock"
-    };
-
     this.toggleCommentLines = function(state, doc, startRow, endRow) {
         var outdent = true;
-        var outentedRows = [];
         var re = /^(\s*)#/;
 
         for (var i=startRow; i<= endRow; i++) {
@@ -91,7 +86,6 @@ oop.inherits(Mode, TextMode);
 
         var tokenizedLine = this.$tokenizer.getLineTokens(line, state);
         var tokens = tokenizedLine.tokens;
-        var endState = tokenizedLine.state;
 
         if (tokens.length && tokens[tokens.length-1].type == "comment") {
             return indent;