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//===-- DataBufferHeap.cpp --------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Core/DataBufferHeap.h"
using namespace lldb_private;
//----------------------------------------------------------------------
// Default constructor
//----------------------------------------------------------------------
DataBufferHeap::DataBufferHeap () :
m_data()
{
}
//----------------------------------------------------------------------
// Initialize this class with "n" characters and fill the buffer
// with "ch".
//----------------------------------------------------------------------
DataBufferHeap::DataBufferHeap (lldb::offset_t n, uint8_t ch) :
m_data()
{
if (n < m_data.max_size())
m_data.assign (n, ch);
}
//----------------------------------------------------------------------
// Initialize this class with a copy of the "n" bytes from the "bytes"
// buffer.
//----------------------------------------------------------------------
DataBufferHeap::DataBufferHeap (const void *src, lldb::offset_t src_len) :
m_data()
{
CopyData (src, src_len);
}
//----------------------------------------------------------------------
// Virtual destructor since this class inherits from a pure virtual
// base class.
//----------------------------------------------------------------------
DataBufferHeap::~DataBufferHeap ()
{
}
//----------------------------------------------------------------------
// Return a pointer to the bytes owned by this object, or NULL if
// the object contains no bytes.
//----------------------------------------------------------------------
uint8_t *
DataBufferHeap::GetBytes ()
{
if (m_data.empty())
return NULL;
return &m_data[0];
}
//----------------------------------------------------------------------
// Return a const pointer to the bytes owned by this object, or NULL
// if the object contains no bytes.
//----------------------------------------------------------------------
const uint8_t *
DataBufferHeap::GetBytes () const
{
if (m_data.empty())
return NULL;
return &m_data[0];
}
//----------------------------------------------------------------------
// Return the number of bytes this object currently contains.
//----------------------------------------------------------------------
uint64_t
DataBufferHeap::GetByteSize () const
{
return m_data.size();
}
//----------------------------------------------------------------------
// Sets the number of bytes that this object should be able to
// contain. This can be used prior to copying data into the buffer.
//----------------------------------------------------------------------
uint64_t
DataBufferHeap::SetByteSize (uint64_t new_size)
{
m_data.resize(new_size);
return m_data.size();
}
void
DataBufferHeap::CopyData (const void *src, uint64_t src_len)
{
const uint8_t *src_u8 = (const uint8_t *)src;
if (src && src_len > 0)
m_data.assign (src_u8, src_u8 + src_len);
else
m_data.clear();
}
void
DataBufferHeap::Clear()
{
buffer_t empty;
m_data.swap(empty);
}
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