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