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
16using namespace llvm;
17using namespace llvm::codeview;
18using namespace llvm::codeview::detail;
19
20GuidAdapter::GuidAdapter(StringRef Guid)
21    : FormatAdapter(makeArrayRef(Guid.bytes_begin(), Guid.bytes_end())) {}
22
23GuidAdapter::GuidAdapter(ArrayRef<uint8_t> Guid)
24    : FormatAdapter(std::move(Guid)) {}
25
26void 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
43raw_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}
48