1//===- RecordIterator.h -----------------------------------------*- 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#ifndef LLVM_DEBUGINFO_CODEVIEW_RECORDITERATOR_H
11#define LLVM_DEBUGINFO_CODEVIEW_RECORDITERATOR_H
12
13#include "llvm/ADT/ArrayRef.h"
14#include "llvm/ADT/iterator_range.h"
15#include "llvm/DebugInfo/CodeView/RecordSerialization.h"
16#include "llvm/DebugInfo/CodeView/StreamInterface.h"
17#include "llvm/DebugInfo/CodeView/StreamReader.h"
18#include "llvm/Support/Endian.h"
19
20namespace llvm {
21namespace codeview {
22
23template <typename Kind> struct CVRecord {
24  uint32_t Length;
25  Kind Type;
26  ArrayRef<uint8_t> Data;
27  ArrayRef<uint8_t> RawData;
28};
29
30template <typename Kind> struct VarStreamArrayExtractor<CVRecord<Kind>> {
31  Error operator()(StreamRef Stream, uint32_t &Len,
32                   CVRecord<Kind> &Item) const {
33    const RecordPrefix *Prefix = nullptr;
34    StreamReader Reader(Stream);
35    uint32_t Offset = Reader.getOffset();
36
37    if (auto EC = Reader.readObject(Prefix))
38      return EC;
39    Item.Length = Prefix->RecordLen;
40    if (Item.Length < 2)
41      return make_error<CodeViewError>(cv_error_code::corrupt_record);
42    Item.Type = static_cast<Kind>(uint16_t(Prefix->RecordKind));
43
44    Reader.setOffset(Offset);
45    if (auto EC =
46            Reader.readBytes(Item.RawData, Item.Length + sizeof(uint16_t)))
47      return EC;
48    Item.Data = Item.RawData.slice(sizeof(RecordPrefix));
49    Len = Prefix->RecordLen + 2;
50    return Error::success();
51  }
52};
53}
54}
55
56#endif
57