ccls/src/log.hh

45 lines
1.1 KiB
C++

// Copyright 2017-2018 ccls Authors
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include <stdio.h>
#include <sstream>
namespace ccls::log {
extern FILE* file;
struct Voidify {
void operator&(const std::ostream&) {}
};
enum Verbosity {
Verbosity_FATAL = -3,
Verbosity_ERROR = -2,
Verbosity_WARNING = -1,
Verbosity_INFO = 0,
};
extern Verbosity verbosity;
struct Message {
std::stringstream stream_;
int verbosity_;
Message(Verbosity verbosity, const char* file, int line);
~Message();
};
}
#define LOG_IF(v, cond) \
!(cond) ? void(0) \
: ccls::log::Voidify() & \
ccls::log::Message(v, __FILE__, __LINE__).stream_
#define LOG_S(v) \
LOG_IF(ccls::log::Verbosity_##v, \
ccls::log::Verbosity_##v <= ccls::log::verbosity)
#define LOG_IF_S(v, cond) \
LOG_IF(ccls::log::Verbosity_##v, \
(cond) && ccls::log::Verbosity_##v <= ccls::log::verbosity)
#define LOG_V_ENABLED(v) (v <= ccls::log::verbosity)
#define LOG_V(v) LOG_IF(ccls::log::Verbosity(v), LOG_V_ENABLED(v))