71 lines
2.3 KiB
C++
71 lines
2.3 KiB
C++
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//===-- DataBufferHeap.cpp --------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Utility/DataBufferHeap.h"
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using namespace lldb_private;
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// Default constructor
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DataBufferHeap::DataBufferHeap() : m_data() {}
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// Initialize this class with "n" characters and fill the buffer with "ch".
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DataBufferHeap::DataBufferHeap(lldb::offset_t n, uint8_t ch) : m_data() {
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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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// Initialize this class with a copy of the "n" bytes from the "bytes" buffer.
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DataBufferHeap::DataBufferHeap(const void *src, lldb::offset_t src_len)
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: m_data() {
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CopyData(src, src_len);
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}
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// Virtual destructor since this class inherits from a pure virtual base class.
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DataBufferHeap::~DataBufferHeap() = default;
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// Return a pointer to the bytes owned by this object, or nullptr if the object
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// contains no bytes.
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uint8_t *DataBufferHeap::GetBytes() {
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return (m_data.empty() ? nullptr : m_data.data());
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}
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// Return a const pointer to the bytes owned by this object, or nullptr if the
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// object contains no bytes.
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const uint8_t *DataBufferHeap::GetBytes() const {
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return (m_data.empty() ? nullptr : m_data.data());
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}
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// Return the number of bytes this object currently contains.
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uint64_t DataBufferHeap::GetByteSize() const { return m_data.size(); }
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// Sets the number of bytes that this object should be able to contain. This
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// can be used prior to copying data into the buffer.
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uint64_t DataBufferHeap::SetByteSize(uint64_t new_size) {
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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 DataBufferHeap::CopyData(const void *src, uint64_t src_len) {
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const uint8_t *src_u8 = static_cast<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 DataBufferHeap::AppendData(const void *src, uint64_t src_len) {
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m_data.insert(m_data.end(), static_cast<const uint8_t *>(src),
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static_cast<const uint8_t *>(src) + src_len);
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}
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void DataBufferHeap::Clear() {
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buffer_t empty;
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m_data.swap(empty);
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}
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