mirror of
https://github.com/carbon-language/carbon-lang.git
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Jon Ross-Perkins
145c44b66c
Removes the separate language server binary; I'm not sure we need to provide it. Instead, `carbon language-server` is added as a subcommand. Moves //language_server to //toolchain/language_server. Splits into a trivial language_server.h, and a substantive server.h. I wasn't sure about a better name, but wanted the split similar to check/check.h, lex/lex.h, etc. At the same time, the class is probably going to be a little big so not a good fit to through into just a cpp file. This fixes some style issues with the language server class, but generally I'm trying to not address things here in order to keep it simpler.
91 lines
3.1 KiB
C++
91 lines
3.1 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#ifndef CARBON_TOOLCHAIN_LANGUAGE_SERVER_SERVER_H_
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#define CARBON_TOOLCHAIN_LANGUAGE_SERVER_SERVER_H_
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#include <memory>
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#include <unordered_map>
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#include <vector>
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#include "clang-tools-extra/clangd/LSPBinder.h"
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#include "clang-tools-extra/clangd/Protocol.h"
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#include "clang-tools-extra/clangd/Transport.h"
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#include "common/error.h"
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namespace Carbon::LanguageServer {
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// Provides a LSP implementation for Carbon.
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class Server : public clang::clangd::Transport::MessageHandler,
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public clang::clangd::LSPBinder::RawOutgoing {
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public:
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// Prepares the server to run on the provided streams.
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explicit Server(std::FILE* input_stream, llvm::raw_ostream& output_stream);
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// Runs the server in a loop, returning the result. Currently this always
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// returns an error when the input stream is closed.
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auto Run() -> ErrorOr<Success>;
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// Transport::MessageHandler
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// Handlers returns true to keep processing messages, or false to shut down.
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// Handler called on notification by client.
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auto onNotify(llvm::StringRef method, llvm::json::Value value)
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-> bool override;
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// Handler called on method call by client.
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auto onCall(llvm::StringRef method, llvm::json::Value params,
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llvm::json::Value id) -> bool override;
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// Handler called on response of Transport::call.
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auto onReply(llvm::json::Value id, llvm::Expected<llvm::json::Value> result)
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-> bool override;
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// LSPBinder::RawOutgoing
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// Send method call to client
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auto callMethod(llvm::StringRef method, llvm::json::Value params,
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clang::clangd::Callback<llvm::json::Value> reply)
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-> void override {
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// TODO: implement when needed
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}
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// Send notification to client
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auto notify(llvm::StringRef method, llvm::json::Value params)
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-> void override {
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transport_->notify(method, params);
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}
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private:
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// Typed handlers for notifications and method calls by client.
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// Client opened a document.
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auto OnDidOpenTextDocument(
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clang::clangd::DidOpenTextDocumentParams const& params) -> void;
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// Client updated content of a document.
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auto OnDidChangeTextDocument(
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clang::clangd::DidChangeTextDocumentParams const& params) -> void;
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// Capabilities negotiation
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auto OnInitialize(clang::clangd::NoParams const& client_capabilities,
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clang::clangd::Callback<llvm::json::Object> cb) -> void;
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// Code outline
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auto OnDocumentSymbol(
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clang::clangd::DocumentSymbolParams const& params,
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clang::clangd::Callback<std::vector<clang::clangd::DocumentSymbol>> cb)
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-> void;
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const std::unique_ptr<clang::clangd::Transport> transport_;
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// content of files managed by the language client.
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std::unordered_map<std::string, std::string> files_;
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// handlers for client methods and notifications
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clang::clangd::LSPBinder::RawHandlers handlers_;
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// Binds client calls to member methods.
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clang::clangd::LSPBinder binder_;
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};
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} // namespace Carbon::LanguageServer
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#endif // CARBON_TOOLCHAIN_LANGUAGE_SERVER_SERVER_H_
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