greenplumn COstreamString 源码
greenplumn COstreamString 代码
文件路径：/src/backend/gporca/libgpos/include/gpos/io/COstreamString.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2008 - 2010 Greenplum Inc.
//
// @filename:
// COstreamString.h
//
// @doc:
// Output string stream class;
//---------------------------------------------------------------------------
#ifndef GPOS_COstreamString_H
#define GPOS_COstreamString_H
#include "gpos/io/COstream.h"
#include "gpos/string/CWString.h"
namespace gpos
{
//---------------------------------------------------------------------------
// @class:
// COstreamString
//
// @doc:
// Implements an output stream writing to a string
//
//---------------------------------------------------------------------------
class COstreamString : public COstream
{
private:
// underlying string
CWString *m_string;
public:
COstreamString(const COstreamString &) = delete;
// please see comments in COstream.h for an explanation
using COstream::operator<<;
// ctor
explicit COstreamString(CWString *);
~COstreamString() override = default;
// implement << operator on wide char array
IOstream &operator<<(const WCHAR *wc_array) override;
// implement << operator on char array
IOstream &operator<<(const CHAR *c_array) override;
// implement << operator on wide char
IOstream &operator<<(const WCHAR wc) override;
// implement << operator on char
IOstream &operator<<(const CHAR c) override;
};
} // namespace gpos
#endif // !GPOS_COstreamString_H
// EOF
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