Create method getTokenizedBuffer() on language mode

Instead of assigning a tokenizedBuffer property on LanguageMode instances from the TokenizedBuffer constructor.

src/app/language-mode.coffee

@@ -5,6 +5,9 @@ require 'underscore-extensions'
 
 module.exports =
 class LanguageMode
+  buffer = null
+  grammar = null
+  editSession = null
   pairedCharacters:
     '(': ')'
     '[': ']'
@@ -24,7 +27,7 @@ class LanguageMode
       nextCharachter = @editSession.getTextInBufferRange([cursorBufferPosition, cursorBufferPosition.add([0,1])])
 
       hasWordAfterCursor = /\w/.test(nextCharachter)
-      cursorInsideString = @tokenizedBuffer.isBufferPositionInsideString(cursorBufferPosition)
+      cursorInsideString = @getTokenizedBuffer().isBufferPositionInsideString(cursorBufferPosition)
 
       autoCompleteOpeningBracket = @isOpeningBracket(text) and not hasWordAfterCursor and not cursorInsideString
       skipOverExistingClosingBracket = false
@@ -44,6 +47,9 @@ class LanguageMode
         @bracketAnchorRanges.push @editSession.addAnchorRange(range)
         false
 
+  getTokenizedBuffer: ->
+    @editSession.tokenizedBuffer
+
   isOpeningBracket: (string) ->
     @pairedCharacters[string]?
 
@@ -60,7 +66,7 @@ class LanguageMode
 
   toggleLineCommentsInRange: (range) ->
     range = Range.fromObject(range)
-    scopes = @tokenizedBuffer.scopesForPosition(range.start)
+    scopes = @getTokenizedBuffer().scopesForPosition(range.start)
     return unless commentString = TextMateBundle.lineCommentStringForScope(scopes[0])
 
     commentRegexString = _.escapeRegExp(commentString)
@@ -87,7 +93,7 @@ class LanguageMode
     return null unless @doesBufferRowStartFold(bufferRow)
 
     startIndentLevel = @editSession.indentationForBufferRow(bufferRow)
-    scopes = @tokenizedBuffer.scopesForPosition([bufferRow, 0])
+    scopes = @getTokenizedBuffer().scopesForPosition([bufferRow, 0])
     for row in [(bufferRow + 1)..@editSession.getLastBufferRow()]
       continue if @editSession.isBufferRowBlank(row)
       indentation = @editSession.indentationForBufferRow(row)
@@ -102,7 +108,7 @@ class LanguageMode
 
   suggestedIndentForBufferRow: (bufferRow) ->
     currentIndentLevel = @editSession.indentationForBufferRow(bufferRow)
-    scopes = @tokenizedBuffer.scopesForPosition([bufferRow, 0])
+    scopes = @getTokenizedBuffer().scopesForPosition([bufferRow, 0])
     return currentIndentLevel unless increaseIndentPattern = TextMateBundle.indentRegexForScope(scopes[0])
 
     currentLine = @buffer.lineForRow(bufferRow)
@@ -131,7 +137,7 @@ class LanguageMode
     return unless precedingRow?
 
     precedingLine = @editSession.lineForBufferRow(precedingRow)
-    scopes = @tokenizedBuffer.scopesForPosition([precedingRow, Infinity])
+    scopes = @getTokenizedBuffer().scopesForPosition([precedingRow, Infinity])
     increaseIndentPattern = TextMateBundle.indentRegexForScope(scopes[0])
     return unless increaseIndentPattern
 
@@ -142,7 +148,7 @@ class LanguageMode
       @editSession.setIndentationForBufferRow(bufferRow, desiredIndentLevel)
 
   autoDecreaseIndentForBufferRow: (bufferRow) ->
-    scopes = @tokenizedBuffer.scopesForPosition([bufferRow, 0])
+    scopes = @getTokenizedBuffer().scopesForPosition([bufferRow, 0])
     increaseIndentPattern = TextMateBundle.indentRegexForScope(scopes[0])
     decreaseIndentPattern = TextMateBundle.outdentRegexForScope(scopes[0])
     return unless increaseIndentPattern and decreaseIndentPattern

src/app/tokenized-buffer.coffee

@@ -17,7 +17,6 @@ class TokenizedBuffer
 
   constructor: (@buffer, { @languageMode, @tabLength }) ->
     @tabLength ?= 2
-    @languageMode.tokenizedBuffer = this
     @id = @constructor.idCounter++
     @screenLines = @buildScreenLinesForRows(0, @buffer.getLastRow())
     @buffer.on "change.tokenized-buffer#{@id}", (e) => @handleBufferChange(e)