arphaman updated this revision to Diff 157762.
arphaman marked 2 inline comments as done.
arphaman added a comment.
Updated patch to address review comments:
- The compilation database updated are used only when
'-in-memory-compile-commands' flag is used.
- It's now possible to set the working directory as well.
https://reviews.llvm.org/D49758
Files:
clangd/ClangdLSPServer.cpp
clangd/ClangdLSPServer.h
clangd/GlobalCompilationDatabase.cpp
clangd/GlobalCompilationDatabase.h
clangd/Protocol.cpp
clangd/Protocol.h
clangd/tool/ClangdMain.cpp
test/clangd/did-change-configuration-params.test
Index: test/clangd/did-change-configuration-params.test
===================================================================
--- /dev/null
+++ test/clangd/did-change-configuration-params.test
@@ -0,0 +1,51 @@
+# RUN: clangd -in-memory-compile-commands -lit-test < %s 2> %t | FileCheck -strict-whitespace %s
+# RUN: cat %t | FileCheck --check-prefix=ERR %s
+{"jsonrpc":"2.0","id":0,"method":"initialize","params":{"processId":123,"rootPath":"clangd","capabilities":{},"trace":"off"}}
+---
+{"jsonrpc":"2.0","method":"workspace/didChangeConfiguration","params":{"settings":{"compilationDatabaseChanges":{"/clangd-test/foo.c": {"workingDirectory":"/clangd-test", "compilationCommand": ["clang", "-c", "foo.c"]}}}}}
+---
+{"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"test:///foo.c","languageId":"c","version":1,"text":"int main() { int i; return i; }"}}}
+# CHECK: "method": "textDocument/publishDiagnostics",
+# CHECK-NEXT: "params": {
+# CHECK-NEXT: "diagnostics": [],
+# CHECK-NEXT: "uri": "file://{{.*}}/foo.c"
+# CHECK-NEXT: }
+---
+{"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"test:///bar.c","languageId":"c","version":1,"text":"int main() { int i; return i; }"}}}
+# CHECK: "method": "textDocument/publishDiagnostics",
+# CHECK-NEXT: "params": {
+# CHECK-NEXT: "diagnostics": [],
+# CHECK-NEXT: "uri": "file://{{.*}}/bar.c"
+# CHECK-NEXT: }
+---
+{"jsonrpc":"2.0","method":"workspace/didChangeConfiguration","params":{"settings":{"compilationDatabaseChanges":{"/clangd-test/foo.c": {"workingDirectory":"/clangd-test2", "compilationCommand": ["clang", "-c", "foo.c", "-Wall", "-Werror"]}}}}}
+# CHECK: "method": "textDocument/publishDiagnostics",
+# CHECK-NEXT: "params": {
+# CHECK-NEXT: "diagnostics": [
+# CHECK-NEXT: {
+# CHECK-NEXT: "message": "variable 'i' is uninitialized when used here",
+# CHECK-NEXT: "range": {
+# CHECK-NEXT: "end": {
+# CHECK-NEXT: "character": 28,
+# CHECK-NEXT: "line": 0
+# CHECK-NEXT: },
+# CHECK-NEXT: "start": {
+# CHECK-NEXT: "character": 27,
+# CHECK-NEXT: "line": 0
+# CHECK-NEXT: }
+# CHECK-NEXT: },
+# CHECK-NEXT: "severity": 1
+# CHECK-NEXT: }
+# CHECK-NEXT: ],
+# CHECK-NEXT: "uri": "file://{{.*}}/foo.c"
+# CHECK-NEXT: }
+#
+# ERR: Updating file /clangd-test/foo.c with command [/clangd-test2] clang -c foo.c -Wall -Werror
+# Don't reparse the second file:
+# ERR: Skipping rebuild of the AST for /clangd-test/bar.c
+---
+{"jsonrpc":"2.0","id":5,"method":"shutdown"}
+---
+{"jsonrpc":"2.0","method":"exit"}
+
+
Index: clangd/tool/ClangdMain.cpp
===================================================================
--- clangd/tool/ClangdMain.cpp
+++ clangd/tool/ClangdMain.cpp
@@ -166,6 +166,11 @@
"eventually. Don't rely on it."),
llvm::cl::init(""), llvm::cl::Hidden);
+static llvm::cl::opt<bool>
+ InMemoryCompileCommands("in-memory-compile-commands",
+ llvm::cl::desc("Use an in-memory compile commands"),
+ llvm::cl::init(false), llvm::cl::Hidden);
+
int main(int argc, char *argv[]) {
llvm::sys::PrintStackTraceOnErrorSignal(argv[0]);
llvm::cl::SetVersionPrinter([](llvm::raw_ostream &OS) {
@@ -278,7 +283,9 @@
CCOpts.ShowOrigins = ShowOrigins;
// Initialize and run ClangdLSPServer.
- ClangdLSPServer LSPServer(Out, CCOpts, CompileCommandsDirPath, Opts);
+ ClangdLSPServer LSPServer(Out, CCOpts, CompileCommandsDirPath,
+ /*ShouldUseInMemoryCDB=*/InMemoryCompileCommands,
+ Opts);
constexpr int NoShutdownRequestErrorCode = 1;
llvm::set_thread_name("clangd.main");
// Change stdin to binary to not lose \r\n on windows.
Index: clangd/Protocol.h
===================================================================
--- clangd/Protocol.h
+++ clangd/Protocol.h
@@ -419,10 +419,26 @@
};
bool fromJSON(const llvm::json::Value &, DidChangeWatchedFilesParams &);
+/// Clangd extension that's used in the 'compilationDatabaseChanges' in
+/// workspace/didChangeConfiguration to record updates to the in-memory
+/// compilation database.
+struct ClangdConfigurationCompilationDatabaseUpdate {
+ std::string workingDirectory;
+ std::vector<std::string> compilationCommand;
+};
+bool fromJSON(const llvm::json::Value &,
+ ClangdConfigurationCompilationDatabaseUpdate &);
+
/// Clangd extension to manage a workspace/didChangeConfiguration notification
/// since the data received is described as 'any' type in LSP.
struct ClangdConfigurationParamsChange {
llvm::Optional<std::string> compilationDatabasePath;
+
+ // The changes that happened to the compilation database.
+ // The key of the map is a file name.
+ llvm::Optional<
+ std::map<std::string, ClangdConfigurationCompilationDatabaseUpdate>>
+ compilationDatabaseChanges;
};
bool fromJSON(const llvm::json::Value &, ClangdConfigurationParamsChange &);
Index: clangd/Protocol.cpp
===================================================================
--- clangd/Protocol.cpp
+++ clangd/Protocol.cpp
@@ -591,10 +591,18 @@
return O && O.map("settings", CCP.settings);
}
+bool fromJSON(const llvm::json::Value &Params,
+ ClangdConfigurationCompilationDatabaseUpdate &CDbUpdate) {
+ json::ObjectMapper O(Params);
+ return O && O.map("workingDirectory", CDbUpdate.workingDirectory) &&
+ O.map("compilationCommand", CDbUpdate.compilationCommand);
+}
+
bool fromJSON(const json::Value &Params,
ClangdConfigurationParamsChange &CCPC) {
json::ObjectMapper O(Params);
- return O && O.map("compilationDatabasePath", CCPC.compilationDatabasePath);
+ return O && O.map("compilationDatabasePath", CCPC.compilationDatabasePath) &&
+ O.map("compilationDatabaseChanges", CCPC.compilationDatabaseChanges);
}
} // namespace clangd
Index: clangd/GlobalCompilationDatabase.h
===================================================================
--- clangd/GlobalCompilationDatabase.h
+++ clangd/GlobalCompilationDatabase.h
@@ -113,6 +113,30 @@
Cached; /* GUARDED_BY(Mut) */
};
+/// Gets compile args from an in-memory mapping based on a filepath. Typically
+/// used by clients who provide the compile commands themselves.
+class InMemoryCompilationDb : public GlobalCompilationDatabase {
+public:
+ /// Gets compile command for \p File from the stored mapping.
+ llvm::Optional<tooling::CompileCommand>
+ getCompileCommand(PathRef File) const override;
+
+ /// Sets the compilation command for a particular file.
+ ///
+ /// \returns True if the File had no compilation command before.
+ bool setCompilationCommandForFile(PathRef File,
+ tooling::CompileCommand CompilationCommand);
+
+ /// Removes the compilation command for \p File if it's present in the
+ /// mapping.
+ void invalidate(PathRef File);
+
+private:
+ mutable std::mutex Mutex;
+ mutable llvm::StringMap<llvm::Optional<tooling::CompileCommand>>
+ Commands; /* GUARDED_BY(Mut) */
+};
+
} // namespace clangd
} // namespace clang
Index: clangd/GlobalCompilationDatabase.cpp
===================================================================
--- clangd/GlobalCompilationDatabase.cpp
+++ clangd/GlobalCompilationDatabase.cpp
@@ -152,5 +152,28 @@
Cached.clear();
}
+llvm::Optional<tooling::CompileCommand>
+InMemoryCompilationDb::getCompileCommand(PathRef File) const {
+ std::lock_guard<std::mutex> Lock(Mutex);
+ auto It = Commands.find(File);
+ if (It == Commands.end())
+ return None;
+ return *It->second;
+}
+
+bool InMemoryCompilationDb::setCompilationCommandForFile(
+ PathRef File, tooling::CompileCommand CompilationCommand) {
+ std::unique_lock<std::mutex> Lock(Mutex);
+ llvm::Optional<tooling::CompileCommand> &Command = Commands[File];
+ bool IsNewEntry = !Command.hasValue();
+ Command = std::move(CompilationCommand);
+ return IsNewEntry;
+}
+
+void InMemoryCompilationDb::invalidate(PathRef File) {
+ std::unique_lock<std::mutex> Lock(Mutex);
+ Commands.erase(File);
+}
+
} // namespace clangd
} // namespace clang
Index: clangd/ClangdLSPServer.h
===================================================================
--- clangd/ClangdLSPServer.h
+++ clangd/ClangdLSPServer.h
@@ -35,7 +35,7 @@
/// for compile_commands.json in all parent directories of each file.
ClangdLSPServer(JSONOutput &Out, const clangd::CodeCompleteOptions &CCOpts,
llvm::Optional<Path> CompileCommandsDir,
- const ClangdServer::Options &Opts);
+ bool ShouldUseInMemoryCDB, const ClangdServer::Options &Opts);
/// Run LSP server loop, receiving input for it from \p In. \p In must be
/// opened in binary mode. Output will be written using Out variable passed to
@@ -103,6 +103,7 @@
// before ClangdServer.
DirectoryBasedGlobalCompilationDatabase NonCachedCDB;
CachingCompilationDb CDB;
+ InMemoryCompilationDb InMemoryCDB;
RealFileSystemProvider FSProvider;
/// Options used for code completion
Index: clangd/ClangdLSPServer.cpp
===================================================================
--- clangd/ClangdLSPServer.cpp
+++ clangd/ClangdLSPServer.cpp
@@ -247,6 +247,7 @@
PathRef File = Params.textDocument.uri.file();
DraftMgr.removeDraft(File);
Server.removeDocument(File);
+ InMemoryCDB.invalidate(File);
}
void ClangdLSPServer::onDocumentOnTypeFormatting(
@@ -411,15 +412,38 @@
reparseOpenedFiles();
}
+
+ // Update to the compilation database.
+ if (Settings.compilationDatabaseChanges) {
+ const auto &CompileCommandUpdates = *Settings.compilationDatabaseChanges;
+ bool ShouldReparseOpenFiles = false;
+ for (auto &Entry : CompileCommandUpdates) {
+ /// The opened files need to be reparsed only when some existing
+ /// entries are changed.
+ PathRef File = Entry.first;
+ if (!InMemoryCDB.setCompilationCommandForFile(
+ File, tooling::CompileCommand(
+ std::move(Entry.second.workingDirectory),
+ llvm::sys::path::filename(File),
+ std::move(Entry.second.compilationCommand),
+ /*Output=*/"")))
+ ShouldReparseOpenFiles = true;
+ }
+ if (ShouldReparseOpenFiles)
+ reparseOpenedFiles();
+ }
}
ClangdLSPServer::ClangdLSPServer(JSONOutput &Out,
const clangd::CodeCompleteOptions &CCOpts,
llvm::Optional<Path> CompileCommandsDir,
+ bool ShouldUseInMemoryCDB,
const ClangdServer::Options &Opts)
: Out(Out), NonCachedCDB(std::move(CompileCommandsDir)), CDB(NonCachedCDB),
CCOpts(CCOpts), SupportedSymbolKinds(defaultSymbolKinds()),
- Server(CDB, FSProvider, /*DiagConsumer=*/*this, Opts) {}
+ Server(ShouldUseInMemoryCDB ? (GlobalCompilationDatabase &)InMemoryCDB
+ : CDB,
+ FSProvider, /*DiagConsumer=*/*this, Opts) {}
bool ClangdLSPServer::run(std::FILE *In, JSONStreamStyle InputStyle) {
assert(!IsDone && "Run was called before");
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