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//===- DWARFDebugAbbrev.h ---------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_DEBUGINFO_DWARF_DWARFDEBUGABBREV_H
#define LLVM_DEBUGINFO_DWARF_DWARFDEBUGABBREV_H
#include "llvm/DebugInfo/DWARF/DWARFAbbreviationDeclaration.h"
#include "llvm/Support/DataExtractor.h"
#include <cstdint>
#include <map>
#include <vector>
namespace llvm {
class raw_ostream;
class DWARFAbbreviationDeclarationSet {
uint64_t Offset;
/// Code of the first abbreviation, if all abbreviations in the set have
/// consecutive codes. UINT32_MAX otherwise.
uint32_t FirstAbbrCode;
std::vector<DWARFAbbreviationDeclaration> Decls;
using const_iterator =
std::vector<DWARFAbbreviationDeclaration>::const_iterator;
public:
DWARFAbbreviationDeclarationSet();
uint64_t getOffset() const { return Offset; }
void dump(raw_ostream &OS) const;
Error extract(DataExtractor Data, uint64_t *OffsetPtr);
const DWARFAbbreviationDeclaration *
getAbbreviationDeclaration(uint32_t AbbrCode) const;
const_iterator begin() const {
return Decls.begin();
}
const_iterator end() const {
return Decls.end();
}
std::string getCodeRange() const;
uint32_t getFirstAbbrCode() const { return FirstAbbrCode; }
private:
void clear();
};
class DWARFDebugAbbrev {
using DWARFAbbreviationDeclarationSetMap =
std::map<uint64_t, DWARFAbbreviationDeclarationSet>;
mutable DWARFAbbreviationDeclarationSetMap AbbrDeclSets;
mutable DWARFAbbreviationDeclarationSetMap::const_iterator PrevAbbrOffsetPos;
mutable std::optional<DataExtractor> Data;
public:
DWARFDebugAbbrev(DataExtractor Data);
Expected<const DWARFAbbreviationDeclarationSet *>
getAbbreviationDeclarationSet(uint64_t CUAbbrOffset) const;
void dump(raw_ostream &OS) const;
Error parse() const;
DWARFAbbreviationDeclarationSetMap::const_iterator begin() const {
assert(!Data && "Must call parse before iterating over DWARFDebugAbbrev");
return AbbrDeclSets.begin();
}
DWARFAbbreviationDeclarationSetMap::const_iterator end() const {
return AbbrDeclSets.end();
}
};
} // end namespace llvm
#endif // LLVM_DEBUGINFO_DWARF_DWARFDEBUGABBREV_H
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