Assert.h

#pragma once
 
#include <cstdarg>
#include <cstdio>
#include <cstdlib>
#include <iostream>
 
#define ASSERT
 
#ifdef ASSERT
 
template <typename... Args>
inline void AssertFail(const char* expr, const char* file, int line, const char* func, Args&&... args)
{
    std::fprintf(stderr, "[ASSERTION FAILED]\n");
    std::fprintf(stderr, "  Expression: %s\n", expr);
    std::fprintf(stderr, "  Location:   %s:%d   (%s)\n", file, line, func);
 
    if constexpr (sizeof...(args) > 0)
    {
        std::cerr << "  Message:    ";
        (std::cerr << ... << std::forward<Args>(args));
        std::cerr << '\n';
    }
 
    std::fflush(stderr);
    std::abort();
}
 
#define Assert(expr, ...)                                                                                              \
    ((expr) ? static_cast<void>(0) : AssertFail(#expr, __FILE__, __LINE__, __func__ __VA_OPT__(, ) __VA_ARGS__))
 
#else
 
#define Assert(expr, ...) ((void)0)
 
#endif