1 //===- DebugStringTableSubsection.h - CodeView String Table -----*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef LLVM_DEBUGINFO_CODEVIEW_DEBUGSTRINGTABLESUBSECTION_H
11 #define LLVM_DEBUGINFO_CODEVIEW_DEBUGSTRINGTABLESUBSECTION_H
13 #include "llvm/ADT/StringMap.h"
14 #include "llvm/ADT/StringRef.h"
15 #include "llvm/DebugInfo/CodeView/DebugSubsection.h"
16 #include "llvm/Support/BinaryStreamRef.h"
17 #include "llvm/Support/Error.h"
23 class BinaryStreamReader;
24 class BinaryStreamRef;
25 class BinaryStreamWriter;
29 /// Represents a read-only view of a CodeView string table. This is a very
30 /// simple flat buffer consisting of null-terminated strings, where strings
31 /// are retrieved by their offset in the buffer. DebugStringTableSubsectionRef
32 /// does not own the underlying storage for the buffer.
33 class DebugStringTableSubsectionRef : public DebugSubsectionRef {
35 DebugStringTableSubsectionRef();
37 static bool classof(const DebugSubsectionRef *S) {
38 return S->kind() == DebugSubsectionKind::StringTable;
41 Error initialize(BinaryStreamRef Contents);
43 Expected<StringRef> getString(uint32_t Offset) const;
45 bool valid() const { return Stream.valid(); }
48 BinaryStreamRef Stream;
51 /// Represents a read-write view of a CodeView string table.
52 /// DebugStringTableSubsection owns the underlying storage for the table, and is
53 /// capable of serializing the string table into a format understood by
54 /// DebugStringTableSubsectionRef.
55 class DebugStringTableSubsection : public DebugSubsection {
57 DebugStringTableSubsection();
59 static bool classof(const DebugSubsection *S) {
60 return S->kind() == DebugSubsectionKind::StringTable;
63 // If string S does not exist in the string table, insert it.
64 // Returns the ID for S.
65 uint32_t insert(StringRef S);
67 // Return the ID for string S. Assumes S exists in the table.
68 uint32_t getStringId(StringRef S) const;
70 uint32_t calculateSerializedSize() const override;
71 Error commit(BinaryStreamWriter &Writer) const override;
73 uint32_t size() const;
75 StringMap<uint32_t>::const_iterator begin() const { return Strings.begin(); }
77 StringMap<uint32_t>::const_iterator end() const { return Strings.end(); }
80 StringMap<uint32_t> Strings;
81 uint32_t StringSize = 1;