graph TD
    calculator[Calculator] --> calculatorApp[MSProgrammerCalculator]

classDiagram
    IExpression <|-- IOperator
    IExpression <|-- UnaryOperatorExpression
    IOperator <|-- UnaryOperatorExpression
    UnaryOperatorExpression <|-- BitwiseNOTExpression
    UnaryOperatorExpression <|-- NegateExpression
    <<interface>> IExpression
    IExpression : long EvaluateResult()
    IExpression : string EvaluateExpression(BaseNumber)
    <<interface>> IOperator
    IOperator : OperatorDescriptor OperatorDescriptor
    <<abstract>> UnaryOperatorExpression
    UnaryOperatorExpression : IExpression Operand

classDiagram
    IExpression <|-- IOperator
    IExpression <|-- BinaryOperatorExpression
    IOperator <|-- BinaryOperatorExpression
    BinaryOperatorExpression <|-- BitwiseANDExpression
    BinaryOperatorExpression <|-- BitwiseNANDExpression
    BinaryOperatorExpression <|-- BitwiseNORExpression
    BinaryOperatorExpression <|-- BitwiseORExpression
    BinaryOperatorExpression <|-- BitwiseXORExpression
    BinaryOperatorExpression <|-- DivideExpression
    BinaryOperatorExpression <|-- LeftShiftExpression
    BinaryOperatorExpression <|-- MinusExpression
    BinaryOperatorExpression <|-- ModuloExpression
    BinaryOperatorExpression <|-- MultiplyExpression
    BinaryOperatorExpression <|-- PlusExpression
    BinaryOperatorExpression <|-- RightShiftExpression
    <<interface>> IExpression
    IExpression : long EvaluateResult()
    IExpression : string EvaluateExpression(BaseNumber)
    <<interface>> IOperator
    IOperator : OperatorDescriptor OperatorDescriptor
    <<abstract>> BinaryOperatorExpression
    BinaryOperatorExpression : IExpression LeftOperand
    BinaryOperatorExpression : IExpression RightOperand

classDiagram
    IExpression <|-- IOperator
    IExpression <|-- OperandExpression
    IExpression <|-- SubmitExpression
    IExpression <|-- ParenthesisExpression
    IOperator <|-- ParenthesisExpression
    <<interface>> IExpression
    IExpression : long EvaluateResult()
    IExpression : string EvaluateExpression(BaseNumber)
    <<interface>> IOperator
    IOperator : OperatorDescriptor OperatorDescriptor