1//===-- DataBufferHeap.cpp --------------------------------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "lldb/Core/DataBufferHeap.h"
11
12using namespace lldb_private;
13
14//----------------------------------------------------------------------
15// Default constructor
16//----------------------------------------------------------------------
17DataBufferHeap::DataBufferHeap () :
18    m_data()
19{
20}
21
22//----------------------------------------------------------------------
23// Initialize this class with "n" characters and fill the buffer
24// with "ch".
25//----------------------------------------------------------------------
26DataBufferHeap::DataBufferHeap (lldb::offset_t n, uint8_t ch) :
27    m_data()
28{
29    if (n < m_data.max_size())
30        m_data.assign (n, ch);
31}
32
33//----------------------------------------------------------------------
34// Initialize this class with a copy of the "n" bytes from the "bytes"
35// buffer.
36//----------------------------------------------------------------------
37DataBufferHeap::DataBufferHeap (const void *src, lldb::offset_t src_len) :
38    m_data()
39{
40    CopyData (src, src_len);
41}
42
43//----------------------------------------------------------------------
44// Virtual destructor since this class inherits from a pure virtual
45// base class.
46//----------------------------------------------------------------------
47DataBufferHeap::~DataBufferHeap ()
48{
49}
50
51//----------------------------------------------------------------------
52// Return a pointer to the bytes owned by this object, or NULL if
53// the object contains no bytes.
54//----------------------------------------------------------------------
55uint8_t *
56DataBufferHeap::GetBytes ()
57{
58    if (m_data.empty())
59        return NULL;
60    return &m_data[0];
61}
62
63//----------------------------------------------------------------------
64// Return a const pointer to the bytes owned by this object, or NULL
65// if the object contains no bytes.
66//----------------------------------------------------------------------
67const uint8_t *
68DataBufferHeap::GetBytes () const
69{
70    if (m_data.empty())
71        return NULL;
72    return &m_data[0];
73}
74
75//----------------------------------------------------------------------
76// Return the number of bytes this object currently contains.
77//----------------------------------------------------------------------
78uint64_t
79DataBufferHeap::GetByteSize () const
80{
81    return m_data.size();
82}
83
84
85//----------------------------------------------------------------------
86// Sets the number of bytes that this object should be able to
87// contain. This can be used prior to copying data into the buffer.
88//----------------------------------------------------------------------
89uint64_t
90DataBufferHeap::SetByteSize (uint64_t new_size)
91{
92    m_data.resize(new_size);
93    return m_data.size();
94}
95
96void
97DataBufferHeap::CopyData (const void *src, uint64_t src_len)
98{
99    const uint8_t *src_u8 = (const uint8_t *)src;
100    if (src && src_len > 0)
101        m_data.assign (src_u8, src_u8 + src_len);
102    else
103        m_data.clear();
104}
105
106void
107DataBufferHeap::Clear()
108{
109    buffer_t empty;
110    m_data.swap(empty);
111}
112