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#pragma once
#include "asl/base/meta.hpp"
#include "asl/base/assert.hpp"
#define ASL_MOVE(...) (static_cast<::asl::un_ref_t<decltype(__VA_ARGS__)>&&>(__VA_ARGS__))
#define ASL_FWD(expr_) (static_cast<decltype(expr_)&&>(expr_))
#define ASL_FWD_LIKE(ref_, expr_) (static_cast<::asl::copy_cref_t<ref_, decltype(expr_)&&>>(expr_))
namespace asl
{
struct in_place_t {};
static constexpr in_place_t in_place{};
template<moveable T>
constexpr void swap(T& a, T& b)
{
T tmp{ASL_MOVE(a)};
a = ASL_MOVE(b);
b = ASL_MOVE(tmp);
}
template<typename T, typename U>
T exchange(T& obj, U&& new_value)
{
T old_value = ASL_MOVE(obj);
obj = ASL_FWD(new_value);
return old_value;
}
template<trivially_copy_constructible U, trivially_copy_constructible T>
constexpr U bit_cast(T value) requires (sizeof(T) == sizeof(U))
{
return __builtin_bit_cast(U, value);
}
template<typename T>
constexpr T min(T a, T b)
{
return (a <= b) ? a : b;
}
template<typename T>
constexpr T max(T a, T b)
{
return (a >= b) ? a : b;
}
constexpr uint64_t round_up_pow2(uint64_t v)
{
ASL_ASSERT(v <= 0x8000'0000'0000'0000);
v -= 1;
v |= v >> 1;
v |= v >> 2;
v |= v >> 4;
v |= v >> 8;
v |= v >> 16;
v |= v >> 32;
return v + 1;
}
constexpr bool is_pow2(isize_t v)
{
return v > 0 && ((v - 1) & v) == 0;
}
#define ASL_DELETE_COPY(T) \
T(const T&) = delete; \
T& operator=(const T&) = delete;
#define ASL_DELETE_MOVE(T) \
T(T&&) = delete; \
T& operator=(T&&) = delete;
#define ASL_DELETE_COPY_MOVE(T) \
ASL_DELETE_COPY(T) \
ASL_DELETE_MOVE(T)
#define ASL_DEFAULT_COPY(T) \
T(const T&) = default; \
T& operator=(const T&) = default;
#define ASL_DEFAULT_MOVE(T) \
T(T&&) = default; \
T& operator=(T&&) = default;
#define ASL_DEFAULT_COPY_MOVE(T) \
ASL_DEFAULT_COPY(T) \
ASL_DEFAULT_MOVE(T)
#define ASL_CONCAT2(A, B) A##B
#define ASL_CONCAT(A, B) ASL_CONCAT2(A, B)
} // namespace asl
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