| //===--- GlobalCompilationDatabase.cpp ---------------------------*- C++-*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "GlobalCompilationDatabase.h" |
| #include "Logger.h" |
| #include "clang/Tooling/CompilationDatabase.h" |
| #include "llvm/Support/FileSystem.h" |
| #include "llvm/Support/Path.h" |
| |
| using namespace llvm; |
| namespace clang { |
| namespace clangd { |
| |
| tooling::CompileCommand |
| GlobalCompilationDatabase::getFallbackCommand(PathRef File) const { |
| std::vector<std::string> Argv = {"clang"}; |
| // Clang treats .h files as C by default, resulting in unhelpful diagnostics. |
| // Parsing as Objective C++ is friendly to more cases. |
| if (sys::path::extension(File) == ".h") |
| Argv.push_back("-xobjective-c++-header"); |
| Argv.push_back(File); |
| return tooling::CompileCommand(sys::path::parent_path(File), |
| sys::path::filename(File), std::move(Argv), |
| /*Output=*/""); |
| } |
| |
| DirectoryBasedGlobalCompilationDatabase:: |
| DirectoryBasedGlobalCompilationDatabase(Optional<Path> CompileCommandsDir) |
| : CompileCommandsDir(std::move(CompileCommandsDir)) {} |
| |
| DirectoryBasedGlobalCompilationDatabase:: |
| ~DirectoryBasedGlobalCompilationDatabase() = default; |
| |
| Optional<tooling::CompileCommand> |
| DirectoryBasedGlobalCompilationDatabase::getCompileCommand(PathRef File) const { |
| if (auto CDB = getCDBForFile(File)) { |
| auto Candidates = CDB->getCompileCommands(File); |
| if (!Candidates.empty()) |
| return std::move(Candidates.front()); |
| } else { |
| log("Failed to find compilation database for {0}", File); |
| } |
| return None; |
| } |
| |
| tooling::CompilationDatabase * |
| DirectoryBasedGlobalCompilationDatabase::getCDBInDirLocked(PathRef Dir) const { |
| // FIXME(ibiryukov): Invalidate cached compilation databases on changes |
| auto CachedIt = CompilationDatabases.find(Dir); |
| if (CachedIt != CompilationDatabases.end()) |
| return CachedIt->second.get(); |
| std::string Error = ""; |
| auto CDB = tooling::CompilationDatabase::loadFromDirectory(Dir, Error); |
| auto Result = CDB.get(); |
| CompilationDatabases.insert(std::make_pair(Dir, std::move(CDB))); |
| return Result; |
| } |
| |
| tooling::CompilationDatabase * |
| DirectoryBasedGlobalCompilationDatabase::getCDBForFile(PathRef File) const { |
| namespace path = sys::path; |
| assert((path::is_absolute(File, path::Style::posix) || |
| path::is_absolute(File, path::Style::windows)) && |
| "path must be absolute"); |
| |
| std::lock_guard<std::mutex> Lock(Mutex); |
| if (CompileCommandsDir) |
| return getCDBInDirLocked(*CompileCommandsDir); |
| for (auto Path = path::parent_path(File); !Path.empty(); |
| Path = path::parent_path(Path)) |
| if (auto CDB = getCDBInDirLocked(Path)) |
| return CDB; |
| return nullptr; |
| } |
| |
| Optional<tooling::CompileCommand> |
| OverlayCDB::getCompileCommand(PathRef File) const { |
| { |
| std::lock_guard<std::mutex> Lock(Mutex); |
| auto It = Commands.find(File); |
| if (It != Commands.end()) |
| return It->second; |
| } |
| return Base ? Base->getCompileCommand(File) : None; |
| } |
| |
| tooling::CompileCommand OverlayCDB::getFallbackCommand(PathRef File) const { |
| auto Cmd = Base ? Base->getFallbackCommand(File) |
| : GlobalCompilationDatabase::getFallbackCommand(File); |
| std::lock_guard<std::mutex> Lock(Mutex); |
| Cmd.CommandLine.insert(Cmd.CommandLine.end(), FallbackFlags.begin(), |
| FallbackFlags.end()); |
| return Cmd; |
| } |
| |
| void OverlayCDB::setCompileCommand( |
| PathRef File, llvm::Optional<tooling::CompileCommand> Cmd) { |
| std::unique_lock<std::mutex> Lock(Mutex); |
| if (Cmd) |
| Commands[File] = std::move(*Cmd); |
| else |
| Commands.erase(File); |
| } |
| |
| } // namespace clangd |
| } // namespace clang |