1 files changed, 74 insertions, 0 deletions
diff --git a/contrib/llvm-project/lldb/source/Utility/DataBufferHeap.cpp b/contrib/llvm-project/lldb/source/Utility/DataBufferHeap.cpp
new file mode 100644
index 000000000000..ea84a36f1697
--- /dev/null
+++ b/contrib/llvm-project/lldb/source/Utility/DataBufferHeap.cpp
@@ -0,0 +1,74 @@
+//===-- DataBufferHeap.cpp ------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt 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);
+}
+
+DataBufferHeap::DataBufferHeap(const DataBuffer &data_buffer) : m_data() {
+  CopyData(data_buffer.GetBytes(), data_buffer.GetByteSize());
+}
+
+// Virtual destructor since this class inherits from a pure virtual base class.
+DataBufferHeap::~DataBufferHeap() = default;
+
+// Return a const pointer to the bytes owned by this object, or nullptr if the
+// object contains no bytes.
+const uint8_t *DataBufferHeap::GetBytesImpl() const {
+  return (m_data.empty() ? nullptr : m_data.data());
+}
+
+// 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) {
+  if (new_size < m_data.max_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 = static_cast<const uint8_t *>(src);
+  if (src && src_len > 0)
+    m_data.assign(src_u8, src_u8 + src_len);
+  else
+    m_data.clear();
+}
+
+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;
+  m_data.swap(empty);
+}
+
+char DataBuffer::ID;
+char WritableDataBuffer::ID;
+char DataBufferUnowned::ID;
+char DataBufferHeap::ID;