greenplumn CWString 源码
greenplumn CWString 代码
文件路径：/src/backend/gporca/libgpos/src/string/CWString.cpp
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2008 Greenplum, Inc.
//
// @filename:
// CWString.cpp
//
// @doc:
// Implementation of the wide character string class.
//---------------------------------------------------------------------------
#include "gpos/string/CWString.h"
#include "gpos/base.h"
using namespace gpos;
//---------------------------------------------------------------------------
// @function:
// CWString::CWString
//
// @doc:
// Ctor
//
//---------------------------------------------------------------------------
CWString::CWString(ULONG length)
: CWStringBase(length,
true // owns_memory
),
m_w_str_buffer(nullptr)
{
}
//---------------------------------------------------------------------------
// @function:
// CWString::GetBuffer
//
// @doc:
// Returns the wide character buffer storing the string
//
//---------------------------------------------------------------------------
const WCHAR *
CWString::GetBuffer() const
{
return m_w_str_buffer;
}
//---------------------------------------------------------------------------
// @function:
// CWString::Append
//
// @doc:
// Appends a string to the current string
//
//---------------------------------------------------------------------------
void
CWString::Append(const CWStringBase *str)
{
GPOS_ASSERT(nullptr != str);
if (0 < str->Length())
{
AppendBuffer(str->GetBuffer());
}
GPOS_ASSERT(IsValid());
}
// EOF
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