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//===-- DAPLog.h ----------------------------------------------------------===//
//
// 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 LLDB_TOOLS_LLDB_DAP_DAPLOG_H
#define LLDB_TOOLS_LLDB_DAP_DAPLOG_H
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/FormatAdapters.h"
#include "llvm/Support/FormatVariadic.h"
#include "llvm/Support/raw_ostream.h"
#include <mutex>
#include <string>
#include <system_error>
// Write a message to log, if logging is enabled.
#define DAP_LOG(log, ...) \
do { \
::lldb_dap::Log *log_private = (log); \
if (log_private) { \
log_private->WriteMessage(::llvm::formatv(__VA_ARGS__).str()); \
} \
} while (0)
// Write message to log, if error is set. In the log message refer to the error
// with {0}. Error is cleared regardless of whether logging is enabled.
#define DAP_LOG_ERROR(log, error, ...) \
do { \
::lldb_dap::Log *log_private = (log); \
::llvm::Error error_private = (error); \
if (log_private && error_private) { \
log_private->WriteMessage( \
::lldb_dap::FormatError(::std::move(error_private), __VA_ARGS__)); \
} else \
::llvm::consumeError(::std::move(error_private)); \
} while (0)
namespace lldb_dap {
/// Log manages the lldb-dap log file, used with the corresponding `DAP_LOG` and
/// `DAP_LOG_ERROR` helpers.
class Log final {
public:
/// Creates a log file with the given filename.
Log(llvm::StringRef filename, std::error_code &EC);
void WriteMessage(llvm::StringRef message);
private:
std::mutex m_mutex;
llvm::raw_fd_ostream m_stream;
};
template <typename... Args>
inline auto FormatError(llvm::Error error, const char *format, Args &&...args) {
return llvm::formatv(format, llvm::toString(std::move(error)),
std::forward<Args>(args)...)
.str();
}
} // namespace lldb_dap
#endif
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