TranslationUnit[0:0->4:0]
  FunctionDeclaration[0:0->4:0]
    Type[0:0->0:3]
      void
    foo
    (
    )
    FunctionDefinition[1:0->4:0]
    {
      VariableDeclaration[2:4->2:13]
        Type[2:4->2:6]
          int
        a
        NumericLiteral[2:12->2:12]
          7
      VariableDeclaration[3:4->3:22]
        Type[3:4->3:6]
          int
        b
        UnaryExpression[3:12->3:22]
          prefix ~
          UnaryExpression[3:14->3:21]
            prefix !
            UnaryExpression[3:15->3:21]
              prefix ~
              UnaryExpression[3:16->3:21]
                prefix ++
                UnaryExpression[3:18->3:21]
                  postfix ++
                  Name[3:18->3:18]
                    a
    }