lib/DebugInfo/CodeView/Formatters.cpp

   1 //===- Formatters.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 "llvm/DebugInfo/CodeView/Formatters.h"
  10 #include "llvm/ADT/ArrayRef.h"
  11 #include "llvm/DebugInfo/CodeView/GUID.h"
  12 #include "llvm/Support/raw_ostream.h"
  13 #include <algorithm>
  14 #include <cassert>
  15
  16 using namespace llvm;
  17 using namespace llvm::codeview;
  18 using namespace llvm::codeview::detail;
  19
  20 GuidAdapter::GuidAdapter(StringRef Guid)
  21     : FormatAdapter(makeArrayRef(Guid.bytes_begin(), Guid.bytes_end())) {}
  22
  23 GuidAdapter::GuidAdapter(ArrayRef<uint8_t> Guid)
  24     : FormatAdapter(std::move(Guid)) {}
  25
  26 void GuidAdapter::format(raw_ostream &Stream, StringRef Style) {
  27   static const char *Lookup = "0123456789ABCDEF";
  28
  29   assert(Item.size() == 16 && "Expected 16-byte GUID");
  30   Stream << "{";
  31   for (int i = 0; i < 16;) {
  32     uint8_t Byte = Item[i];
  33     uint8_t HighNibble = (Byte >> 4) & 0xF;
  34     uint8_t LowNibble = Byte & 0xF;
  35     Stream << Lookup[HighNibble] << Lookup[LowNibble];
  36     ++i;
  37     if (i >= 4 && i <= 10 && i % 2 == 0)
  38       Stream << "-";
  39   }
  40   Stream << "}";
  41 }
  42
  43 raw_ostream &llvm::codeview::operator<<(raw_ostream &OS, const GUID &Guid) {
  44   codeview::detail::GuidAdapter A(Guid.Guid);
  45   A.format(OS, "");
  46   return OS;
  47 }