86 lines
1.8 KiB
C++
86 lines
1.8 KiB
C++
/*
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* smart_ptr.hpp
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* Copyright (c) 2014 Eran Pe'er.
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*
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* This program is made available under the terms of the MIT License.
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*
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* Created on Jul 17, 2014
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*/
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#pragma once
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#include <exception>
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#include "mockutils/Macros.hpp"
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namespace fakeit {
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class RefCount {
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private:
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int count;
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public:
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void AddRef() {
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count++;
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}
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int Release() {
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return --count;
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}
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};
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template<typename T>
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class smart_ptr {
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private:
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T *pData;
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RefCount *reference;
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public:
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smart_ptr() : pData(0), reference(0) {
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reference = new RefCount();
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reference->AddRef();
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}
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smart_ptr(T *pValue) : pData(pValue), reference(0) {
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reference = new RefCount();
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reference->AddRef();
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}
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smart_ptr(const smart_ptr<T> &sp) : pData(sp.pData), reference(sp.reference) {
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reference->AddRef();
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}
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~smart_ptr() THROWS {
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if (reference->Release() == 0) {
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delete reference;
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delete pData;
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}
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}
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T &operator*() {
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return *pData;
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}
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T *operator->() {
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return pData;
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}
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smart_ptr<T> &operator=(const smart_ptr<T> &sp) {
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if (this != &sp) {
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// Decrement the old reference count
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// if reference become zero delete the old data
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if (reference->Release() == 0) {
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delete reference;
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delete pData;
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}
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// Copy the data and reference pointer
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// and increment the reference count
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pData = sp.pData;
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reference = sp.reference;
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reference->AddRef();
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}
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return *this;
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}
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};
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}
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