check.h

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// Copyright (c) 2019 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#ifndef BITCOIN_UTIL_CHECK_H
#define BITCOIN_UTIL_CHECK_H
 
#if defined(HAVE_CONFIG_H)
#include <config/bitcoin-config.h>
#endif
 
#include <tinyformat.h>
 
#include <stdexcept>
 
class NonFatalCheckError : public std::runtime_error {
    using std::runtime_error::runtime_error;
};
 
#define CHECK_NONFATAL(condition)                                              \
    do {                                                                       \
        if (!(condition)) {                                                    \
            throw NonFatalCheckError(                                          \
                strprintf("%s:%d (%s)\n"                                       \
                          "Internal bug detected: '%s'\n"                      \
                          "You may report this issue here: %s\n",              \
                          __FILE__, __LINE__, __func__, (#condition),          \
                          PACKAGE_BUGREPORT));                                 \
        }                                                                      \
    } while (false)
 
#if defined(NDEBUG)
#error "Cannot compile without assertions!"
#endif
 
template <typename T> T get_pure_r_value(T &&val) {
    return std::forward<T>(val);
}
 
#define Assert(val)                                                            \
    ([&]() -> decltype(get_pure_r_value(val)) {                                \
        auto &&check = (val);                                                  \
        assert(#val &&check);                                                  \
        return std::forward<decltype(get_pure_r_value(val))>(check);           \
    }())
 
#ifdef ABORT_ON_FAILED_ASSUME
#define Assume(val) Assert(val)
#else
#define Assume(val) ((void)(val))
#endif
 
#endif // BITCOIN_UTIL_CHECK_H