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//===- StringTable.h - CodeView String Table Reader/Writer ------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_DEBUGINFO_CODEVIEW_STRINGTABLE_H
#define LLVM_DEBUGINFO_CODEVIEW_STRINGTABLE_H
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/BinaryStreamRef.h"
#include "llvm/Support/Error.h"
#include <stdint.h>
namespace llvm {
class BinaryStreamReader;
class BinaryStreamRef;
class BinaryStreamWriter;
namespace codeview {
/// Represents a read-only view of a CodeView string table. This is a very
/// simple flat buffer consisting of null-terminated strings, where strings
/// are retrieved by their offset in the buffer. StringTableRef does not own
/// the underlying storage for the buffer.
class StringTableRef {
public:
StringTableRef();
Error initialize(BinaryStreamRef Contents);
Expected<StringRef> getString(uint32_t Offset) const;
bool valid() const { return Stream.valid(); }
private:
BinaryStreamRef Stream;
};
/// Represents a read-write view of a CodeView string table. StringTable owns
/// the underlying storage for the table, and is capable of serializing the
/// string table into a format understood by StringTableRef.
class StringTable {
public:
// If string S does not exist in the string table, insert it.
// Returns the ID for S.
uint32_t insert(StringRef S);
// Return the ID for string S. Assumes S exists in the table.
uint32_t getStringId(StringRef S) const;
uint32_t calculateSerializedSize() const;
Error commit(BinaryStreamWriter &Writer) const;
uint32_t size() const;
StringMap<uint32_t>::const_iterator begin() const { return Strings.begin(); }
StringMap<uint32_t>::const_iterator end() const { return Strings.end(); }
private:
StringMap<uint32_t> Strings;
uint32_t StringSize = 1;
};
}
}
#endif
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