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comparison clang-tools-extra/clangd/DraftStore.h @ 221:79ff65ed7e25

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LLVM12 Original
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Tue, 15 Jun 2021 19:15:29 +0900
parents 0572611fdcc8
children c4bab56944e8
comparison
equal deleted inserted replaced
220:42394fc6a535 221:79ff65ed7e25
11 11
12 #include "Protocol.h" 12 #include "Protocol.h"
13 #include "support/Path.h" 13 #include "support/Path.h"
14 #include "clang/Basic/LLVM.h" 14 #include "clang/Basic/LLVM.h"
15 #include "llvm/ADT/StringMap.h" 15 #include "llvm/ADT/StringMap.h"
16 #include "llvm/Support/VirtualFileSystem.h"
16 #include <mutex> 17 #include <mutex>
17 #include <string> 18 #include <string>
18 #include <vector> 19 #include <vector>
19 20
20 namespace clang { 21 namespace clang {
21 namespace clangd { 22 namespace clangd {
22 23
23 /// A thread-safe container for files opened in a workspace, addressed by 24 /// 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 /// filenames. The contents are owned by the DraftStore.
25 /// both whole and incremental updates of the documents. 26 /// Each time a draft is updated, it is assigned a version. This can be
26 /// Each time a draft is updated, it is assigned a version number. This can be
27 /// specified by the caller or incremented from the previous version. 27 /// specified by the caller or incremented from the previous version.
28 class DraftStore { 28 class DraftStore {
29 public: 29 public:
30 struct Draft { 30 struct Draft {
31 std::string Contents; 31 std::shared_ptr<const std::string> Contents;
32 int64_t Version = -1; 32 std::string Version;
33 }; 33 };
34 34
35 /// \return Contents of the stored document. 35 /// \return Contents of the stored document.
36 /// For untracked files, a llvm::None is returned. 36 /// For untracked files, a llvm::None is returned.
37 llvm::Optional<Draft> getDraft(PathRef File) const; 37 llvm::Optional<Draft> getDraft(PathRef File) const;
38 38
39 /// \return List of names of the drafts in this store. 39 /// \return List of names of the drafts in this store.
40 std::vector<Path> getActiveFiles() const; 40 std::vector<Path> getActiveFiles() const;
41 41
42 /// Replace contents of the draft for \p File with \p Contents. 42 /// Replace contents of the draft for \p File with \p Contents.
43 /// If no version is specified, one will be automatically assigned. 43 /// If version is empty, one will be automatically assigned.
44 /// Returns the version. 44 /// Returns the version.
45 int64_t addDraft(PathRef File, llvm::Optional<int64_t> Version, 45 std::string addDraft(PathRef File, llvm::StringRef Version,
46 StringRef Contents); 46 StringRef Contents);
47
48 /// Update the contents of the draft for \p File based on \p Changes.
49 /// If a position in \p Changes is invalid (e.g. out-of-range), the
50 /// draft is not modified.
51 /// If no version is specified, one will be automatically assigned.
52 ///
53 /// \return The new version of the draft for \p File, or an error if the
54 /// changes couldn't be applied.
55 llvm::Expected<Draft>
56 updateDraft(PathRef File, llvm::Optional<int64_t> Version,
57 llvm::ArrayRef<TextDocumentContentChangeEvent> Changes);
58 47
59 /// Remove the draft from the store. 48 /// Remove the draft from the store.
60 void removeDraft(PathRef File); 49 void removeDraft(PathRef File);
61 50
51 llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> asVFS() const;
52
62 private: 53 private:
54 struct DraftAndTime {
55 Draft D;
56 std::time_t MTime;
57 };
63 mutable std::mutex Mutex; 58 mutable std::mutex Mutex;
64 llvm::StringMap<Draft> Drafts; 59 llvm::StringMap<DraftAndTime> Drafts;
65 }; 60 };
66 61
67 } // namespace clangd 62 } // namespace clangd
68 } // namespace clang 63 } // namespace clang
69 64