forked from OSchip/llvm-project
87 lines
2.6 KiB
C++
87 lines
2.6 KiB
C++
//===--- DocumentStore.h - File contents container --------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_DOCUMENTSTORE_H
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#define LLVM_CLANG_TOOLS_EXTRA_CLANGD_DOCUMENTSTORE_H
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#include "clang/Basic/LLVM.h"
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#include "llvm/ADT/StringMap.h"
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#include <mutex>
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#include <string>
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#include <vector>
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namespace clang {
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namespace clangd {
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class DocumentStore;
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struct DocumentStoreListener {
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virtual ~DocumentStoreListener() = default;
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virtual void onDocumentAdd(StringRef Uri) {}
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virtual void onDocumentRemove(StringRef Uri) {}
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};
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/// A container for files opened in a workspace, addressed by URI. The contents
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/// are owned by the DocumentStore.
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class DocumentStore {
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public:
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/// Add a document to the store. Overwrites existing contents.
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void addDocument(StringRef Uri, StringRef Text) {
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{
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std::lock_guard<std::mutex> Guard(DocsMutex);
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Docs[Uri] = Text;
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}
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for (const auto &Listener : Listeners)
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Listener->onDocumentAdd(Uri);
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}
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/// Delete a document from the store.
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void removeDocument(StringRef Uri) {
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{
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std::lock_guard<std::mutex> Guard(DocsMutex);
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Docs.erase(Uri);
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}
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for (const auto &Listener : Listeners)
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Listener->onDocumentRemove(Uri);
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}
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/// Retrieve a document from the store. Empty string if it's unknown.
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///
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/// This function is thread-safe. It returns a copy to avoid handing out
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/// references to unguarded data.
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std::string getDocument(StringRef Uri) const {
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// FIXME: This could be a reader lock.
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std::lock_guard<std::mutex> Guard(DocsMutex);
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return Docs.lookup(Uri);
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}
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/// Add a listener. Does not take ownership.
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void addListener(DocumentStoreListener *DSL) { Listeners.push_back(DSL); }
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/// Get name and constents of all documents in this store.
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///
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/// This function is thread-safe. It returns a copies to avoid handing out
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/// references to unguarded data.
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std::vector<std::pair<std::string, std::string>> getAllDocuments() const {
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std::vector<std::pair<std::string, std::string>> AllDocs;
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std::lock_guard<std::mutex> Guard(DocsMutex);
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for (const auto &P : Docs)
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AllDocs.emplace_back(P.first(), P.second);
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return AllDocs;
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}
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private:
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llvm::StringMap<std::string> Docs;
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std::vector<DocumentStoreListener *> Listeners;
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mutable std::mutex DocsMutex;
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};
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} // namespace clangd
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} // namespace clang
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#endif
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