lib/DebugInfo/CodeView/Formatters.cpp

   1 //===- Formatters.cpp -----------------------------------------------------===//
   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 "llvm/DebugInfo/CodeView/Formatters.h"
  11 #include "llvm/ADT/ArrayRef.h"
  12 #include "llvm/DebugInfo/CodeView/GUID.h"
  13 #include "llvm/Support/raw_ostream.h"
  14 #include <algorithm>
  15 #include <cassert>
  16
  17 using namespace llvm;
  18 using namespace llvm::codeview;
  19 using namespace llvm::codeview::detail;
  20
  21 GuidAdapter::GuidAdapter(StringRef Guid)
  22     : FormatAdapter(makeArrayRef(Guid.bytes_begin(), Guid.bytes_end())) {}
  23
  24 GuidAdapter::GuidAdapter(ArrayRef<uint8_t> Guid)
  25     : FormatAdapter(std::move(Guid)) {}
  26
  27 void GuidAdapter::format(raw_ostream &Stream, StringRef Style) {
  28   static const char *Lookup = "0123456789ABCDEF";
  29
  30   assert(Item.size() == 16 && "Expected 16-byte GUID");
  31   Stream << "{";
  32   for (int i = 0; i < 16;) {
  33     uint8_t Byte = Item[i];
  34     uint8_t HighNibble = (Byte >> 4) & 0xF;
  35     uint8_t LowNibble = Byte & 0xF;
  36     Stream << Lookup[HighNibble] << Lookup[LowNibble];
  37     ++i;
  38     if (i >= 4 && i <= 10 && i % 2 == 0)
  39       Stream << "-";
  40   }
  41   Stream << "}";
  42 }
  43
  44 raw_ostream &llvm::codeview::operator<<(raw_ostream &OS, const GUID &Guid) {
  45   codeview::detail::GuidAdapter A(Guid.Guid);
  46   A.format(OS, "");
  47   return OS;
  48 }