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//===- NonRelocatableStringpool.cpp - A simple stringpool ----------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "NonRelocatableStringpool.h"
namespace llvm {
namespace dsymutil {
DwarfStringPoolEntryRef NonRelocatableStringpool::getEntry(StringRef S) {
if (S.empty() && !Strings.empty())
return EmptyString;
auto I = Strings.insert({S, DwarfStringPoolEntry()});
auto &Entry = I.first->second;
if (I.second || !Entry.isIndexed()) {
Entry.Index = NumEntries++;
Entry.Offset = CurrentEndOffset;
Entry.Symbol = nullptr;
CurrentEndOffset += S.size() + 1;
}
return DwarfStringPoolEntryRef(*I.first, true);
}
StringRef NonRelocatableStringpool::internString(StringRef S) {
DwarfStringPoolEntry Entry{nullptr, 0, DwarfStringPoolEntry::NotIndexed};
auto InsertResult = Strings.insert({S, Entry});
return InsertResult.first->getKey();
}
std::vector<DwarfStringPoolEntryRef>
NonRelocatableStringpool::getEntriesForEmission() const {
std::vector<DwarfStringPoolEntryRef> Result;
Result.reserve(Strings.size());
for (const auto &E : Strings)
if (E.getValue().isIndexed())
Result.emplace_back(E, true);
llvm::sort(
Result.begin(), Result.end(),
[](const DwarfStringPoolEntryRef A, const DwarfStringPoolEntryRef B) {
return A.getIndex() < B.getIndex();
});
return Result;
}
} // namespace dsymutil
} // namespace llvm
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