sfizz/sources/Helpers.h
2019-08-22 01:54:43 +02:00

77 lines
No EOL
2.3 KiB
C++

#pragma once
#include <string_view>
#include <signal.h>
inline void trimInPlace(std::string_view& s)
{
const auto leftPosition = s.find_first_not_of(" \r\t\n\f\v");
if (leftPosition != s.npos)
{
s.remove_prefix(leftPosition);
const auto rightPosition = s.find_last_not_of(" \r\t\n\f\v");
s.remove_suffix(s.size() - rightPosition - 1);
}
else
{
s.remove_suffix(s.size());
}
}
inline std::string_view trim(std::string_view s)
{
const auto leftPosition = s.find_first_not_of(" \r\t\n\f\v");
if (leftPosition != s.npos)
{
s.remove_prefix(leftPosition);
const auto rightPosition = s.find_last_not_of(" \r\t\n\f\v");
s.remove_suffix(s.size() - rightPosition - 1);
}
else
{
s.remove_suffix(s.size());
}
return s;
}
inline constexpr unsigned int Fnv1aBasis = 0x811C9DC5;
inline constexpr unsigned int Fnv1aPrime = 0x01000193;
inline constexpr unsigned int hash(const char *s, unsigned int h = Fnv1aBasis)
{
return !*s ? h : hash(s + 1, static_cast<unsigned int>((h ^ *s) * static_cast<unsigned long long>(Fnv1aPrime)));
}
inline unsigned int hash(std::string_view s, unsigned int h = Fnv1aBasis)
{
if (s.length() > 0)
return hash(std::string_view(s.data() + 1, s.length() - 1), static_cast<unsigned int>((h ^ s.front()) * static_cast<unsigned long long>(Fnv1aPrime)));
return h;
}
template<class T>
inline constexpr T min(T op1, T op2) { return std::min(op1, op2); }
template<class T>
inline constexpr T min(T op1, T op2, T op3) { return std::min(op1, std::min(op2, op3)); }
template<class T>
inline constexpr T min(T op1, T op2, T op3, T op4) { return std::min(op1, std::min(op2, std::min(op3, op4))); }
#ifndef NDEBUG
#if __linux__ || __unix__
// These trap into the signal library rather than your own sourcecode
// #define ASSERTFALSE { ::kill(0, SIGTRAP); }
// #define ASSERTFALSE { raise(SIGTRAP); }
#define ASSERTFALSE { __asm__("int3"); }
#elif _WIN32 || _WIN64
#pragma intrinsic (__debugbreak)
#define ASSERTFALSE { __debugbreak(); }
#else
#define ASSERTFALSE { __asm int 3; }
#endif
#define ASSERT(expression) if (!(expression)) ASSERTFALSE
#include <iostream>
#define DBG(ostream) std::cerr << ostream << '\n'
#else
#define ASSERTFALSE
#define ASSERT(expression)
#define DBG(ostream)
#endif