mirror of
https://github.com/wpilibsuite/allwpilib
synced 2026-06-20 00:51:42 +00:00
81 lines
2.6 KiB
C++
81 lines
2.6 KiB
C++
/*----------------------------------------------------------------------------*/
|
|
/* Copyright (c) FIRST 2008-2016. All Rights Reserved. */
|
|
/* Open Source Software - may be modified and shared by FRC teams. The code */
|
|
/* must be accompanied by the FIRST BSD license file in the root directory of */
|
|
/* the project. */
|
|
/*----------------------------------------------------------------------------*/
|
|
|
|
#pragma once
|
|
|
|
#include "HAL/cpp/make_unique.h"
|
|
|
|
// MSVC 2013 doesn't allow "= default" on move constructors, but since we are
|
|
// (currently) only actually using the move constructors in non-MSVC situations
|
|
// (ie, wpilibC++Devices), we can just ignore it in MSVC.
|
|
#if !defined(_MSC_VER)
|
|
#define DEFAULT_MOVE_CONSTRUCTOR(ClassName) ClassName(ClassName&&) = default
|
|
#else
|
|
#define DEFAULT_MOVE_CONSTRUCTOR(ClassName)
|
|
#endif
|
|
|
|
#if (__cplusplus < 201103L)
|
|
#if !defined(_MSC_VER)
|
|
#define nullptr NULL
|
|
#endif
|
|
#define constexpr const
|
|
#endif
|
|
|
|
#if defined(_MSC_VER)
|
|
#define noexcept throw()
|
|
#endif
|
|
|
|
// [[deprecated(msg)]] is a C++14 feature not supported by MSVC or GCC < 4.9.
|
|
// We provide an equivalent warning implementation for those compilers here.
|
|
#if defined(_MSC_VER)
|
|
#define DEPRECATED(msg) __declspec(deprecated(msg))
|
|
#elif defined(__GNUC__)
|
|
#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 8)
|
|
#define DEPRECATED(msg) [[deprecated(msg)]]
|
|
#else
|
|
#define DEPRECATED(msg) __attribute__((deprecated(msg)))
|
|
#endif
|
|
#elif __cplusplus > 201103L
|
|
#define DEPRECATED(msg) [[deprecated(msg)]]
|
|
#else
|
|
#define DEPRECATED(msg) /*nothing*/
|
|
#endif
|
|
|
|
// Provide std::decay_t when using GCC < 4.9
|
|
#if defined(__GNUC__)
|
|
#if __GNUC__ == 4 && __GNUC_MINOR__ < 9
|
|
#include <type_traits>
|
|
namespace std {
|
|
template <class T>
|
|
using decay_t = typename decay<T>::type;
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
// A struct to use as a deleter when a std::shared_ptr must wrap a raw pointer
|
|
// that is being deleted by someone else.
|
|
template <class T>
|
|
struct NullDeleter {
|
|
void operator()(T*) const noexcept {};
|
|
};
|
|
|
|
#include <atomic>
|
|
// Use this for determining whether the default move constructor has been
|
|
// called on a containing object. This serves the purpose of allowing us to
|
|
// use the default move constructor of an object for moving all the data around
|
|
// while being able to use this to, for instance, chose not to de-allocate
|
|
// a PWM port in a destructor.
|
|
struct HasBeenMoved {
|
|
HasBeenMoved(HasBeenMoved&& other) {
|
|
other.moved = true;
|
|
moved = false;
|
|
}
|
|
HasBeenMoved() = default;
|
|
std::atomic<bool> moved{false};
|
|
operator bool() const { return moved; }
|
|
};
|