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//===-- DataBufferHeap.cpp ------------------------------------------------===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#include "lldb/Utility/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() = default;
// Return a pointer to the bytes owned by this object, or nullptr if the object
// contains no bytes.
uint8_t *DataBufferHeap::GetBytes() {
return (m_data.empty() ? nullptr :;
// Return a const pointer to the bytes owned by this object, or nullptr if the
// object contains no bytes.
const uint8_t *DataBufferHeap::GetBytes() const {
return (m_data.empty() ? nullptr :;
// 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) {
return m_data.size();
void DataBufferHeap::CopyData(const void *src, uint64_t src_len) {
const uint8_t *src_u8 = static_cast<const uint8_t *>(src);
if (src && src_len > 0)
m_data.assign(src_u8, src_u8 + src_len);
void DataBufferHeap::AppendData(const void *src, uint64_t src_len) {
m_data.insert(m_data.end(), static_cast<const uint8_t *>(src),
static_cast<const uint8_t *>(src) + src_len);
void DataBufferHeap::Clear() {
buffer_t empty;