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