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comparison clang-tools-extra/clangd/DraftStore.h @ 150:1d019706d866

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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
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147:c2174574ed3a 150:1d019706d866
1 //===--- DraftStore.h - File contents container -----------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_DRAFTSTORE_H
10 #define LLVM_CLANG_TOOLS_EXTRA_CLANGD_DRAFTSTORE_H
11
12 #include "Path.h"
13 #include "Protocol.h"
14 #include "clang/Basic/LLVM.h"
15 #include "llvm/ADT/StringMap.h"
16 #include <mutex>
17 #include <string>
18 #include <vector>
19
20 namespace clang {
21 namespace clangd {
22
23 /// A thread-safe container for files opened in a workspace, addressed by
24 /// filenames. The contents are owned by the DraftStore. This class supports
25 /// both whole and incremental updates of the documents.
26 class DraftStore {
27 public:
28 /// \return Contents of the stored document.
29 /// For untracked files, a llvm::None is returned.
30 llvm::Optional<std::string> getDraft(PathRef File) const;
31
32 /// \return List of names of the drafts in this store.
33 std::vector<Path> getActiveFiles() const;
34
35 /// Replace contents of the draft for \p File with \p Contents.
36 void addDraft(PathRef File, StringRef Contents);
37
38 /// Update the contents of the draft for \p File based on \p Changes.
39 /// If a position in \p Changes is invalid (e.g. out-of-range), the
40 /// draft is not modified.
41 ///
42 /// \return The new version of the draft for \p File, or an error if the
43 /// changes couldn't be applied.
44 llvm::Expected<std::string>
45 updateDraft(PathRef File,
46 llvm::ArrayRef<TextDocumentContentChangeEvent> Changes);
47
48 /// Remove the draft from the store.
49 void removeDraft(PathRef File);
50
51 private:
52 mutable std::mutex Mutex;
53 llvm::StringMap<std::string> Drafts;
54 };
55
56 } // namespace clangd
57 } // namespace clang
58
59 #endif