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