This revision was automatically updated to reflect the committed changes.
sammccall marked an inline comment as done.
Closed by commit rG40cc63ea6eec: [clangd] Modules can have a public API. NFC
(authored by sammccall).
Changed prior to commit:
https://reviews.llvm.org/D96730?vs=323822&id=323985#toc
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D96730/new/
https://reviews.llvm.org/D96730
Files:
clang-tools-extra/clangd/CMakeLists.txt
clang-tools-extra/clangd/ClangdServer.cpp
clang-tools-extra/clangd/ClangdServer.h
clang-tools-extra/clangd/Module.cpp
clang-tools-extra/clangd/Module.h
clang-tools-extra/clangd/unittests/ClangdLSPServerTests.cpp
Index: clang-tools-extra/clangd/unittests/ClangdLSPServerTests.cpp
===================================================================
--- clang-tools-extra/clangd/unittests/ClangdLSPServerTests.cpp
+++ clang-tools-extra/clangd/unittests/ClangdLSPServerTests.cpp
@@ -222,25 +222,26 @@
}
TEST_F(LSPTest, ModulesTest) {
- class MathModule : public Module {
+ class MathModule final : public Module {
void initializeLSP(LSPBinder &Bind, const llvm::json::Object &ClientCaps,
llvm::json::Object &ServerCaps) override {
Bind.notification("add", this, &MathModule::add);
Bind.method("get", this, &MathModule::get);
}
+ int Value = 0;
+
+ public:
void add(const int &X) { Value += X; }
void get(const std::nullptr_t &, Callback<int> Reply) { Reply(Value); }
- int Value = 0;
};
- std::vector<std::unique_ptr<Module>> Mods;
- Mods.push_back(std::make_unique<MathModule>());
- ModuleSet ModSet(std::move(Mods));
- Opts.Modules = &ModSet;
+ ModuleSet Mods;
+ Mods.add(std::make_unique<MathModule>());
+ Opts.Modules = &Mods;
auto &Client = start();
Client.notify("add", 2);
- Client.notify("add", 8);
+ Mods.get<MathModule>()->add(8);
EXPECT_EQ(10, Client.call("get", nullptr).takeValue());
}
Index: clang-tools-extra/clangd/Module.h
===================================================================
--- clang-tools-extra/clangd/Module.h
+++ clang-tools-extra/clangd/Module.h
@@ -3,8 +3,10 @@
#include "LSPBinder.h"
#include "llvm/ADT/StringRef.h"
+#include "llvm/Support/Compiler.h"
#include "llvm/Support/JSON.h"
#include <memory>
+#include <type_traits>
#include <vector>
namespace clang {
@@ -41,12 +43,28 @@
llvm::json::Object &ServerCaps) {}
};
+/// A ModuleSet is a collection of modules installed in clangd.
+///
+/// Modules can be looked up by type, or used through the Module interface.
+/// This allows individual modules to expose a public API.
+/// For this reason, there can be only one module of each type.
+///
+/// ModuleSet owns the modules. It is itself owned by main, not ClangdServer.
class ModuleSet {
std::vector<std::unique_ptr<Module>> Modules;
+ llvm::DenseMap<void *, Module *> Map;
+
+ template <typename Mod> struct ID {
+ static_assert(std::is_base_of<Module, Mod>::value &&
+ std::is_final<Mod>::value,
+ "Modules must be final classes derived from clangd::Module");
+ static int Key;
+ };
+
+ bool addImpl(void *Key, std::unique_ptr<Module>, const char *Source);
public:
- explicit ModuleSet(std::vector<std::unique_ptr<Module>> Modules)
- : Modules(std::move(Modules)) {}
+ ModuleSet() = default;
using iterator = llvm::pointee_iterator<decltype(Modules)::iterator>;
using const_iterator =
@@ -55,7 +73,20 @@
iterator end() { return iterator(Modules.end()); }
const_iterator begin() const { return const_iterator(Modules.begin()); }
const_iterator end() const { return const_iterator(Modules.end()); }
+
+ template <typename Mod> bool add(std::unique_ptr<Mod> M) {
+ return addImpl(&ID<Mod>::Key, std::move(M), LLVM_PRETTY_FUNCTION);
+ }
+ template <typename Mod> Mod *get() {
+ return static_cast<Mod *>(Map.lookup(&ID<Mod>::Key));
+ }
+ template <typename Mod> const Mod *get() const {
+ return const_cast<ModuleSet *>(this)->get<Mod>();
+ }
};
+
+template <typename Mod> int ModuleSet::ID<Mod>::Key;
+
} // namespace clangd
} // namespace clang
#endif
Index: clang-tools-extra/clangd/Module.cpp
===================================================================
--- /dev/null
+++ clang-tools-extra/clangd/Module.cpp
@@ -0,0 +1,18 @@
+#include "Module.h"
+
+namespace clang {
+namespace clangd {
+
+bool ModuleSet::addImpl(void *Key, std::unique_ptr<Module> M,
+ const char *Source) {
+ if (!Map.try_emplace(Key, M.get()).second) {
+ // Source should (usually) include the name of the concrete module type.
+ elog("Tried to register duplicate modules via {0}", Source);
+ return false;
+ }
+ Modules.push_back(std::move(M));
+ return true;
+}
+
+} // namespace clangd
+} // namespace clang
Index: clang-tools-extra/clangd/ClangdServer.h
===================================================================
--- clang-tools-extra/clangd/ClangdServer.h
+++ clang-tools-extra/clangd/ClangdServer.h
@@ -161,6 +161,15 @@
ClangdServer(const GlobalCompilationDatabase &CDB, const ThreadsafeFS &TFS,
const Options &Opts, Callbacks *Callbacks = nullptr);
+ /// Gets the installed module of a given type, if any.
+ /// This exposes access the public interface of modules that have one.
+ template <typename Mod> Mod *getModule() {
+ return Modules ? Modules->get<Mod>() : nullptr;
+ }
+ template <typename Mod> const Mod *getModule() const {
+ return Modules ? Modules->get<Mod>() : nullptr;
+ }
+
/// Add a \p File to the list of tracked C++ files or update the contents if
/// \p File is already tracked. Also schedules parsing of the AST for it on a
/// separate thread. When the parsing is complete, DiagConsumer passed in
@@ -337,6 +346,7 @@
ArrayRef<tooling::Range> Ranges,
Callback<tooling::Replacements> CB);
+ ModuleSet *Modules;
const GlobalCompilationDatabase &CDB;
const ThreadsafeFS &TFS;
Index: clang-tools-extra/clangd/ClangdServer.cpp
===================================================================
--- clang-tools-extra/clangd/ClangdServer.cpp
+++ clang-tools-extra/clangd/ClangdServer.cpp
@@ -127,7 +127,7 @@
ClangdServer::ClangdServer(const GlobalCompilationDatabase &CDB,
const ThreadsafeFS &TFS, const Options &Opts,
Callbacks *Callbacks)
- : CDB(CDB), TFS(TFS),
+ : Modules(Opts.Modules), CDB(CDB), TFS(TFS),
DynamicIdx(Opts.BuildDynamicSymbolIndex ? new FileIndex() : nullptr),
ClangTidyProvider(Opts.ClangTidyProvider),
WorkspaceRoot(Opts.WorkspaceRoot),
Index: clang-tools-extra/clangd/CMakeLists.txt
===================================================================
--- clang-tools-extra/clangd/CMakeLists.txt
+++ clang-tools-extra/clangd/CMakeLists.txt
@@ -75,6 +75,7 @@
Hover.cpp
IncludeFixer.cpp
JSONTransport.cpp
+ Module.cpp
PathMapping.cpp
Protocol.cpp
Quality.cpp
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