 
   # Because our grammar is LALR(1), it can't handle some single-line
   # expressions that lack ending delimiters. The **Rewriter** adds the implicit
-  # blocks, so it doesn't need to. ')' can close a single-line block,
-  # but we need to make sure it's balanced.
+  # blocks, so it doesn't need to.
   addImplicitIndentation: ->
     starter = indent = outdent = null
 


    @scanTokens (token, i, tokens) ->
      [tag] = token
      if tag is 'TERMINATOR' and @tag(i + 1) is 'THEN'
        tokens.splice i, 1
        return 0
      if tag is 'ELSE' and @tag(i - 1) isnt 'OUTDENT'
        tokens.splice i, 0, @indentation()...
        return 2
      if tag is 'CATCH'
        for j in [1..2] when @tag(i + j) in ['OUTDENT', 'TERMINATOR', 'FINALLY']
          tokens.splice i + j, 0, @indentation()...

  EXPRESSION_END  .push INVERSES[left] = rite

# Tokens that indicate the close of a clause of an expression.
EXPRESSION_CLOSE = ['CATCH', 'FINALLY'].concat EXPRESSION_END

# Tokens that, if followed by an `IMPLICIT_CALL`, indicate a function invocation.
IMPLICIT_FUNC    = ['IDENTIFIER', 'SUPER', ')', 'CALL_END', ']', 'INDEX_END', '@', 'THIS']
