| //===--- FSProvider.h - VFS provider for ClangdServer ------------*- C++-*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_FSPROVIDER_H |
| #define LLVM_CLANG_TOOLS_EXTRA_CLANGD_FSPROVIDER_H |
| |
| #include "llvm/ADT/IntrusiveRefCntPtr.h" |
| #include "llvm/Support/VirtualFileSystem.h" |
| |
| namespace clang { |
| namespace clangd { |
| |
| // Wrapper for vfs::FileSystem for use in multithreaded programs like clangd. |
| // As FileSystem is not threadsafe, concurrent threads must each obtain one. |
| class FileSystemProvider { |
| public: |
| virtual ~FileSystemProvider() = default; |
| /// Called by ClangdServer to obtain a vfs::FileSystem to be used for parsing. |
| /// Context::current() will be the context passed to the clang entrypoint, |
| /// such as addDocument(), and will also be propagated to result callbacks. |
| /// Embedders may use this to isolate filesystem accesses. |
| virtual llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> |
| getFileSystem() const = 0; |
| }; |
| |
| class RealFileSystemProvider : public FileSystemProvider { |
| public: |
| // FIXME: returns the single real FS instance, which is not threadsafe. |
| llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> |
| getFileSystem() const override; |
| }; |
| |
| } // namespace clangd |
| } // namespace clang |
| |
| #endif |