61 lines
2.0 KiB
C++
61 lines
2.0 KiB
C++
//===- Logging.h - LSP Server Logging ----------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SUPPORT_LSP_LOGGING_H
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#define LLVM_SUPPORT_LSP_LOGGING_H
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/FormatVariadic.h"
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#include <mutex>
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namespace llvm {
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namespace lsp {
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/// This class represents the main interface for logging, and allows for
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/// filtering logging based on different levels of severity or significance.
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class Logger {
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public:
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/// The level of significance for a log message.
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enum class Level { Debug, Info, Error };
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/// Set the severity level of the logger.
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LLVM_ABI_FOR_TEST static void setLogLevel(Level LogLevel);
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/// Initiate a log message at various severity levels. These should be called
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/// after a call to `initialize`.
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template <typename... Ts> static void debug(const char *Fmt, Ts &&...Vals) {
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log(Level::Debug, Fmt, llvm::formatv(Fmt, std::forward<Ts>(Vals)...));
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}
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template <typename... Ts> static void info(const char *Fmt, Ts &&...Vals) {
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log(Level::Info, Fmt, llvm::formatv(Fmt, std::forward<Ts>(Vals)...));
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}
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template <typename... Ts> static void error(const char *Fmt, Ts &&...Vals) {
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log(Level::Error, Fmt, llvm::formatv(Fmt, std::forward<Ts>(Vals)...));
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}
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private:
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Logger() = default;
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/// Return the main logger instance.
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static Logger &get();
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/// Start a log message with the given severity level.
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LLVM_ABI_FOR_TEST static void log(Level LogLevel, const char *Fmt,
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const llvm::formatv_object_base &Message);
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/// The minimum logging level. Messages with lower level are ignored.
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Level LogLevel = Level::Error;
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/// A mutex used to guard logging.
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std::mutex Mutex;
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};
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} // namespace lsp
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} // namespace llvm
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#endif // LLVM_SUPPORT_LSP_LOGGING_H
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