Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 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 | |
| 12 | using namespace lldb_private; |
| 13 | |
| 14 | //---------------------------------------------------------------------- |
| 15 | // Default constructor |
| 16 | //---------------------------------------------------------------------- |
| 17 | DataBufferHeap::DataBufferHeap () : |
| 18 | m_data() |
| 19 | { |
| 20 | } |
| 21 | |
| 22 | //---------------------------------------------------------------------- |
| 23 | // Initialize this class with "n" characters and fill the buffer |
| 24 | // with "ch". |
| 25 | //---------------------------------------------------------------------- |
| 26 | DataBufferHeap::DataBufferHeap (size_t n, uint8_t ch) : |
| 27 | m_data(n, ch) |
| 28 | { |
| 29 | } |
| 30 | |
| 31 | //---------------------------------------------------------------------- |
| 32 | // Initialize this class with a copy of the "n" bytes from the "bytes" |
| 33 | // buffer. |
| 34 | //---------------------------------------------------------------------- |
| 35 | DataBufferHeap::DataBufferHeap (const void *src, size_t src_len) : |
| 36 | m_data() |
| 37 | { |
| 38 | CopyData (src, src_len); |
| 39 | } |
| 40 | |
| 41 | //---------------------------------------------------------------------- |
| 42 | // Virtual destructor since this class inherits from a pure virtual |
| 43 | // base class. |
| 44 | //---------------------------------------------------------------------- |
| 45 | DataBufferHeap::~DataBufferHeap () |
| 46 | { |
| 47 | } |
| 48 | |
| 49 | //---------------------------------------------------------------------- |
| 50 | // Return a pointer to the bytes owned by this object, or NULL if |
| 51 | // the object contains no bytes. |
| 52 | //---------------------------------------------------------------------- |
| 53 | uint8_t * |
| 54 | DataBufferHeap::GetBytes () |
| 55 | { |
| 56 | if (m_data.empty()) |
| 57 | return NULL; |
| 58 | return &m_data[0]; |
| 59 | } |
| 60 | |
| 61 | //---------------------------------------------------------------------- |
| 62 | // Return a const pointer to the bytes owned by this object, or NULL |
| 63 | // if the object contains no bytes. |
| 64 | //---------------------------------------------------------------------- |
| 65 | const uint8_t * |
| 66 | DataBufferHeap::GetBytes () const |
| 67 | { |
| 68 | if (m_data.empty()) |
| 69 | return NULL; |
| 70 | return &m_data[0]; |
| 71 | } |
| 72 | |
| 73 | //---------------------------------------------------------------------- |
| 74 | // Return the number of bytes this object currently contains. |
| 75 | //---------------------------------------------------------------------- |
| 76 | size_t |
| 77 | DataBufferHeap::GetByteSize () const |
| 78 | { |
| 79 | return m_data.size(); |
| 80 | } |
| 81 | |
| 82 | |
| 83 | //---------------------------------------------------------------------- |
| 84 | // Sets the number of bytes that this object should be able to |
| 85 | // contain. This can be used prior to copying data into the buffer. |
| 86 | //---------------------------------------------------------------------- |
| 87 | size_t |
| 88 | DataBufferHeap::SetByteSize (size_t new_size) |
| 89 | { |
| 90 | m_data.resize(new_size); |
| 91 | return m_data.size(); |
| 92 | } |
| 93 | |
| 94 | void |
| 95 | DataBufferHeap::CopyData (const void *src, size_t src_len) |
| 96 | { |
| 97 | const uint8_t *src_u8 = (const uint8_t *)src; |
| 98 | if (src && src_len > 0) |
| 99 | m_data.assign (src_u8, src_u8 + src_len); |
| 100 | else |
| 101 | m_data.clear(); |
| 102 | } |
| 103 | |
| 104 | |
| 105 | |