const DWARFAbbreviationDeclarationSet*
DWARFDebugAbbrev::getAbbreviationDeclarationSet(uint64_t CUAbbrOffset) const {
const auto End = AbbrDeclSets.end();
if (PrevAbbrOffsetPos != End && PrevAbbrOffsetPos->first == CUAbbrOffset) {
return &(PrevAbbrOffsetPos->second);
}
const auto Pos = AbbrDeclSets.find(CUAbbrOffset);
if (Pos != End) {
PrevAbbrOffsetPos = Pos;
return &(Pos->second);
}
if (Data && CUAbbrOffset < Data->getData().size()) {
uint32_t Offset = CUAbbrOffset;
DWARFAbbreviationDeclarationSet AbbrDecls;
if (!AbbrDecls.extract(*Data, &Offset))
return nullptr;
PrevAbbrOffsetPos =
AbbrDeclSets.insert(std::make_pair(CUAbbrOffset, std::move(AbbrDecls)))
.first;
return &PrevAbbrOffsetPos->second;
}
return nullptr;
}
void DWARFDebugAbbrev::extract(DataExtractor Data) {
clear();
uint32_t Offset = 0;
DWARFAbbreviationDeclarationSet AbbrDecls;
while (Data.isValidOffset(Offset)) {
uint32_t CUAbbrOffset = Offset;
if (!AbbrDecls.extract(Data, &Offset))
break;
AbbrDeclSets[CUAbbrOffset] = std::move(AbbrDecls);
}
}
void DWARFDebugAbbrev::parse() const {
if (!Data)
return;
uint32_t Offset = 0;
DWARFAbbreviationDeclarationSet AbbrDecls;
auto I = AbbrDeclSets.begin();
while (Data->isValidOffset(Offset)) {
while (I != AbbrDeclSets.end() && I->first < Offset)
++I;
uint32_t CUAbbrOffset = Offset;
if (!AbbrDecls.extract(*Data, &Offset))
break;
AbbrDeclSets.insert(I, std::make_pair(CUAbbrOffset, std::move(AbbrDecls)));
}
Data = None;
}
