greenplumn CPrintablePointer 源码
greenplumn CPrintablePointer 代码
文件路径：/src/backend/gporca/libgpos/include/gpos/common/CPrintablePointer.h
// Copyright (C) 2017 VMware, Inc. or its affiliates.
#ifndef GPOS_CPrintablePointer_H
#define GPOS_CPrintablePointer_H
#include "gpos/io/IOstream.h"
namespace gpos
{
template <typename T>
class CPrintablePointer
{
private:
T *m_obj;
friend IOstream &
operator<<(IOstream &os, CPrintablePointer p)
{
if (p.m_obj)
{
return os << *p.m_obj;
}
else
{
return os;
}
}
public:
explicit CPrintablePointer(T *obj) : m_obj(obj)
{
}
CPrintablePointer(const CPrintablePointer &pointer) : m_obj(pointer.m_obj)
{
}
};
template <typename T>
CPrintablePointer<T>
GetPrintablePtr(T *obj)
{
return CPrintablePointer<T>(obj);
}
} // namespace gpos
#endif // GPOS_CPrintablePointer_H
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