lldb/source/Utility/Checksum.cpp

   1 //===-- Checksum.cpp ------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "lldb/Utility/Checksum.h"
  10 #include "llvm/ADT/STLExtras.h"
  11 #include "llvm/ADT/SmallString.h"
  12
  13 using namespace lldb_private;
  14
  15 Checksum::Checksum(llvm::MD5::MD5Result md5) { SetMD5(md5); }
  16
  17 Checksum::Checksum(const Checksum &checksum) { SetMD5(checksum.m_checksum); }
  18
  19 Checksum &Checksum::operator=(const Checksum &checksum) {
  20   SetMD5(checksum.m_checksum);
  21   return *this;
  22 }
  23
  24 void Checksum::SetMD5(llvm::MD5::MD5Result md5) {
  25   const constexpr size_t md5_length = 16;
  26   std::uninitialized_copy_n(md5.begin(), md5_length, m_checksum.begin());
  27 }
  28
  29 Checksum::operator bool() const { return !llvm::equal(m_checksum, g_sentinel); }
  30
  31 bool Checksum::operator==(const Checksum &checksum) const {
  32   return llvm::equal(m_checksum, checksum.m_checksum);
  33 }
  34
  35 bool Checksum::operator!=(const Checksum &checksum) const {
  36   return !(*this == checksum);
  37 }
  38
  39 std::string Checksum::digest() const {
  40   return std::string(m_checksum.digest());
  41 }
  42
  43 llvm::MD5::MD5Result Checksum::g_sentinel = {
  44     {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}};