Rely on token's knowledge of its own leading/trailing whitespace status

Previously, we were determining this at render time. But its baked into
the state of tokens when TokenizedLines are constructed now so we no
longer need to compute it when rendering.

src/editor-view.coffee

@@ -1488,10 +1488,8 @@ class EditorView extends View
       position = 0
       for token in tokens
         @updateScopeStack(line, scopeStack, token.scopes)
-        hasLeadingWhitespace =  position < firstNonWhitespacePosition
-        hasTrailingWhitespace = position + token.value.length > firstTrailingWhitespacePosition
         hasIndentGuide = not mini and showIndentGuide and (hasLeadingWhitespace or lineIsWhitespaceOnly)
-        line.push(token.getValueAsHtml({invisibles, hasLeadingWhitespace, hasTrailingWhitespace, hasIndentGuide}))
+        line.push(token.getValueAsHtml({invisibles, hasIndentGuide}))
         position += token.value.length
 
     @popScope(line, scopeStack) while scopeStack.length > 0

src/token.coffee

@@ -129,7 +129,7 @@ class Token
       scopeClasses = scope.split('.')
       _.isSubset(targetClasses, scopeClasses)
 
-  getValueAsHtml: ({invisibles, hasLeadingWhitespace, hasTrailingWhitespace, hasIndentGuide})->
+  getValueAsHtml: ({invisibles, hasIndentGuide})->
     invisibles ?= {}
     if @isHardTab
       classes = 'hard-tab'
@@ -144,7 +144,7 @@ class Token
       leadingHtml = ''
       trailingHtml = ''
 
-      if hasLeadingWhitespace and match = LeadingWhitespaceRegex.exec(@value)
+      if @hasLeadingWhitespace and match = LeadingWhitespaceRegex.exec(@value)
         classes = 'leading-whitespace'
         classes += ' indent-guide' if hasIndentGuide
         classes += ' invisible-character' if invisibles.space
@@ -154,9 +154,9 @@ class Token
 
         startIndex = match[0].length
 
-      if hasTrailingWhitespace and match = TrailingWhitespaceRegex.exec(@value)
+      if @hasTrailingWhitespace and match = TrailingWhitespaceRegex.exec(@value)
         classes = 'trailing-whitespace'
-        classes += ' indent-guide' if hasIndentGuide and not hasLeadingWhitespace
+        classes += ' indent-guide' if hasIndentGuide and not @hasLeadingWhitespace
         classes += ' invisible-character' if invisibles.space
 
         match[0] = match[0].replace(CharacterRegex, invisibles.space) if invisibles.space