136 lines
4.5 KiB
C++
136 lines
4.5 KiB
C++
//===-- TestFS.cpp ----------------------------------------------*- 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 "TestFS.h"
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#include "GlobalCompilationDatabase.h"
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#include "Path.h"
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#include "URI.h"
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#include "llvm/ADT/None.h"
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#include "llvm/ADT/Optional.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/Errc.h"
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#include "llvm/Support/Path.h"
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namespace clang {
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namespace clangd {
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llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>
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buildTestFS(llvm::StringMap<std::string> const &Files,
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llvm::StringMap<time_t> const &Timestamps) {
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llvm::IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> MemFS(
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new llvm::vfs::InMemoryFileSystem);
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MemFS->setCurrentWorkingDirectory(testRoot());
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for (auto &FileAndContents : Files) {
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llvm::StringRef File = FileAndContents.first();
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MemFS->addFile(
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File, Timestamps.lookup(File),
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llvm::MemoryBuffer::getMemBufferCopy(FileAndContents.second, File));
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}
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return MemFS;
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}
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MockCompilationDatabase::MockCompilationDatabase(llvm::StringRef Directory,
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llvm::StringRef RelPathPrefix)
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: ExtraClangFlags({"-ffreestanding"}), Directory(Directory),
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RelPathPrefix(RelPathPrefix) {
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// -ffreestanding avoids implicit stdc-predef.h.
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}
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llvm::Optional<ProjectInfo>
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MockCompilationDatabase::getProjectInfo(PathRef File) const {
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return ProjectInfo{std::string(Directory)};
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}
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llvm::Optional<tooling::CompileCommand>
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MockCompilationDatabase::getCompileCommand(PathRef File) const {
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if (ExtraClangFlags.empty())
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return None;
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auto FileName = llvm::sys::path::filename(File);
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// Build the compile command.
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auto CommandLine = ExtraClangFlags;
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CommandLine.insert(CommandLine.begin(), "clang");
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if (RelPathPrefix.empty()) {
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// Use the absolute path in the compile command.
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CommandLine.push_back(std::string(File));
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} else {
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// Build a relative path using RelPathPrefix.
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llvm::SmallString<32> RelativeFilePath(RelPathPrefix);
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llvm::sys::path::append(RelativeFilePath, FileName);
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CommandLine.push_back(std::string(RelativeFilePath.str()));
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}
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return {tooling::CompileCommand(Directory != llvm::StringRef()
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? Directory
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: llvm::sys::path::parent_path(File),
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FileName, std::move(CommandLine), "")};
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}
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const char *testRoot() {
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#ifdef _WIN32
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return "C:\\clangd-test";
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#else
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return "/clangd-test";
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#endif
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}
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std::string testPath(PathRef File) {
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assert(llvm::sys::path::is_relative(File) && "FileName should be relative");
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llvm::SmallString<32> NativeFile = File;
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llvm::sys::path::native(NativeFile);
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llvm::SmallString<32> Path;
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llvm::sys::path::append(Path, testRoot(), NativeFile);
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return std::string(Path.str());
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}
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/// unittest: is a scheme that refers to files relative to testRoot().
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/// URI body is a path relative to testRoot() e.g. unittest:///x.h for
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/// /clangd-test/x.h.
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class TestScheme : public URIScheme {
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public:
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static const char *Scheme;
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llvm::Expected<std::string>
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getAbsolutePath(llvm::StringRef /*Authority*/, llvm::StringRef Body,
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llvm::StringRef HintPath) const override {
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if (!HintPath.startswith(testRoot()))
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return llvm::make_error<llvm::StringError>(
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"Hint path doesn't start with test root: " + HintPath,
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llvm::inconvertibleErrorCode());
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if (!Body.consume_front("/"))
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return llvm::make_error<llvm::StringError>(
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"Body of an unittest: URI must start with '/'",
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llvm::inconvertibleErrorCode());
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llvm::SmallString<16> Path(Body.begin(), Body.end());
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llvm::sys::path::native(Path);
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return testPath(Path);
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}
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llvm::Expected<URI>
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uriFromAbsolutePath(llvm::StringRef AbsolutePath) const override {
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llvm::StringRef Body = AbsolutePath;
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if (!Body.consume_front(testRoot()))
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return llvm::make_error<llvm::StringError>(
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AbsolutePath + "does not start with " + testRoot(),
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llvm::inconvertibleErrorCode());
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return URI(Scheme, /*Authority=*/"",
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llvm::sys::path::convert_to_slash(Body));
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}
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};
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const char *TestScheme::Scheme = "unittest";
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static URISchemeRegistry::Add<TestScheme> X(TestScheme::Scheme, "Test schema");
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volatile int UnittestSchemeAnchorSource = 0;
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} // namespace clangd
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} // namespace clang
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