Duration
- Implemented operator+=, operator-=. - Added unit tests.
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@@ -155,9 +155,60 @@ Duration& Duration::operator= (const Duration& other)
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}
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////////////////////////////////////////////////////////////////////////////////
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Duration& Duration::operator- (const Duration& other)
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Duration Duration::operator- (const Duration& other)
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{
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throw std::string ("Error: Duration::operator- unimplemented");
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int left = mSecs * ( mNegative ? -1 : 1);
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int right = other.mSecs * (other.mNegative ? -1 : 1);
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left -= right;
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Duration result;
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result.mSecs = abs (left);
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result.mNegative = left < 0;
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return result;
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}
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////////////////////////////////////////////////////////////////////////////////
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Duration Duration::operator+ (const Duration& other)
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{
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int left = mSecs * ( mNegative ? -1 : 1);
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int right = other.mSecs * (other.mNegative ? -1 : 1);
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left += right;
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Duration result;
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result.mSecs = abs (left);
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result.mNegative = left < 0;
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return result;
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}
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////////////////////////////////////////////////////////////////////////////////
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Duration& Duration::operator-= (const Duration& other)
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{
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int left = mSecs * ( mNegative ? -1 : 1);
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int right = other.mSecs * (other.mNegative ? -1 : 1);
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left -= right;
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mSecs = abs (left);
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mNegative = left < 0;
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return *this;
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}
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////////////////////////////////////////////////////////////////////////////////
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Duration& Duration::operator+= (const Duration& other)
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{
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int left = mSecs * ( mNegative ? -1 : 1);
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int right = other.mSecs * (other.mNegative ? -1 : 1);
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left += right;
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mSecs = abs (left);
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mNegative = left < 0;
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return *this;
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}
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@@ -43,7 +43,10 @@ public:
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bool operator> (const Duration&);
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bool operator>= (const Duration&);
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Duration& operator= (const Duration&);
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Duration& operator- (const Duration&);
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Duration operator- (const Duration&);
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Duration operator+ (const Duration&);
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Duration& operator-= (const Duration&);
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Duration& operator+= (const Duration&);
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~Duration (); // Destructor
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operator time_t () const;
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@@ -56,7 +59,7 @@ public:
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static bool valid (const std::string&);
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void parse (const std::string&);
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private:
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protected:
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time_t mSecs;
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bool mNegative;
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};
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