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// Copyright 2019 Roman Perepelitsa.
//
// This file is part of GitStatus.
//
// GitStatus is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GitStatus is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with GitStatus. If not, see <https://www.gnu.org/licenses/>.
#ifndef ROMKATV_GITSTATUS_CHECK_H_
#define ROMKATV_GITSTATUS_CHECK_H_
#include "logging.h"
#include <stdexcept>
// The argument must be an expression convertible to bool.
// Does nothing if the expression evaluates to true. Otherwise
// it's equivalent to LOG(FATAL).
#define CHECK(cond...) \
static_cast<void>(0), (!!(cond)) ? static_cast<void>(0) : LOG(FATAL) << #cond << ": "
#define VERIFY(cond...) \
static_cast<void>(0), ::gitstatus::internal_check::Thrower(!(cond)) \
? static_cast<void>(0) \
: LOG(ERROR) << #cond << ": "
namespace gitstatus {
struct Exception : std::exception {
const char* what() const noexcept override { return "Exception"; }
};
namespace internal_check {
class Thrower {
public:
Thrower(bool should_throw) : throw_(should_throw) {}
Thrower(Thrower&&) = delete;
explicit operator bool() const { return !throw_; }
~Thrower() noexcept(false) {
if (throw_) throw Exception();
}
private:
bool throw_;
};
} // namespace internal_check
} // namespace gitstatus
#endif // ROMKATV_GITSTATUS_CHECK_H_
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