integerinstruction.h

嵌入式Qt下的一个计算器源码

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** Copyright (C) 2000-2006 TROLLTECH ASA. All rights reserved.
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** This file is part of the Phone Edition of the Qtopia Toolkit.
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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#ifndef CALC_INTEGER_H
#define CALC_INTEGER_H

#include "instruction.h"
#include "integerdata.h"

// Integer instruction base
class BaseIntegerInstruction : public Instruction {
public:
    BaseIntegerInstruction():Instruction(){};
    ~BaseIntegerInstruction(){};

    Data *eval(Data*);
    Data *doEval(IntegerData *i){return i;};
protected:
    IntegerData *integerNum;
};

// Mathematical functions
class IntegerAdd : public BaseIntegerInstruction {
public:
    IntegerAdd():BaseIntegerInstruction(){};
    ~IntegerAdd(){};
    Data *doEval(IntegerData *);
};
class IntegerSub : public BaseIntegerInstruction {
public:
    IntegerSub():BaseIntegerInstruction(){};
    ~IntegerSub(){};
    Data *doEval(IntegerData *);
};
class IntegerMul : public BaseIntegerInstruction {
public:
    IntegerMul():BaseIntegerInstruction(){};
    ~IntegerMul(){};
    Data *doEval(IntegerData *);
};
class IntegerDiv : public BaseIntegerInstruction {
public:
    IntegerDiv():BaseIntegerInstruction(){};
    ~IntegerDiv(){};
    Data *doEval(IntegerData *);
};

#endif