forked from OSchip/llvm-project
92 lines
3.2 KiB
C++
92 lines
3.2 KiB
C++
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//===--- SerializablePathCollection.cpp -- Index of paths -------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "clang/IndexSerialization/SerializablePathCollection.h"
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#include "llvm/Support/Path.h"
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using namespace llvm;
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using namespace clang;
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using namespace clang::index;
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StringPool::StringOffsetSize StringPool::add(StringRef Str) {
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const std::size_t Offset = Buffer.size();
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Buffer += Str;
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return StringPool::StringOffsetSize(Offset, Str.size());
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}
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size_t PathPool::addFilePath(RootDirKind Root,
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const StringPool::StringOffsetSize &Dir,
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StringRef Filename) {
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FilePaths.emplace_back(DirPath(Root, Dir), Paths.add(Filename));
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return FilePaths.size() - 1;
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}
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StringPool::StringOffsetSize PathPool::addDirPath(StringRef Dir) {
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return Paths.add(Dir);
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}
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llvm::ArrayRef<PathPool::FilePath> PathPool::getFilePaths() const {
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return FilePaths;
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}
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StringRef PathPool::getPaths() const { return Paths.getBuffer(); }
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SerializablePathCollection::SerializablePathCollection(
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StringRef CurrentWorkDir, StringRef SysRoot, llvm::StringRef OutputFile)
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: WorkDir(CurrentWorkDir),
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SysRoot(llvm::sys::path::parent_path(SysRoot).empty() ? StringRef()
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: SysRoot),
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WorkDirPath(Paths.addDirPath(WorkDir)),
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SysRootPath(Paths.addDirPath(SysRoot)),
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OutputFilePath(Paths.addDirPath(OutputFile)) {}
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size_t SerializablePathCollection::tryStoreFilePath(const FileEntry &FE) {
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auto FileIt = UniqueFiles.find(&FE);
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if (FileIt != UniqueFiles.end())
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return FileIt->second;
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const auto Dir = tryStoreDirPath(sys::path::parent_path(FE.getName()));
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const auto FileIdx =
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Paths.addFilePath(Dir.Root, Dir.Path, sys::path::filename(FE.getName()));
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UniqueFiles.try_emplace(&FE, FileIdx);
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return FileIdx;
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}
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PathPool::DirPath SerializablePathCollection::tryStoreDirPath(StringRef Dir) {
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// We don't want to strip separator if Dir is "/" - so we check size > 1.
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while (Dir.size() > 1 && llvm::sys::path::is_separator(Dir.back()))
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Dir = Dir.drop_back();
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auto DirIt = UniqueDirs.find(Dir);
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if (DirIt != UniqueDirs.end())
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return DirIt->second;
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const std::string OrigDir = Dir.str();
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PathPool::RootDirKind Root = PathPool::RootDirKind::Regular;
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if (!SysRoot.empty() && Dir.startswith(SysRoot) &&
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llvm::sys::path::is_separator(Dir[SysRoot.size()])) {
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Root = PathPool::RootDirKind::SysRoot;
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Dir = Dir.drop_front(SysRoot.size());
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} else if (!WorkDir.empty() && Dir.startswith(WorkDir) &&
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llvm::sys::path::is_separator(Dir[WorkDir.size()])) {
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Root = PathPool::RootDirKind::CurrentWorkDir;
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Dir = Dir.drop_front(WorkDir.size());
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}
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if (Root != PathPool::RootDirKind::Regular) {
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while (!Dir.empty() && llvm::sys::path::is_separator(Dir.front()))
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Dir = Dir.drop_front();
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}
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PathPool::DirPath Result(Root, Paths.addDirPath(Dir));
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UniqueDirs.try_emplace(OrigDir, Result);
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return Result;
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}
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