Squashed 'third_party/allwpilib_2017/' content from commit 35ac87d
Change-Id: I7bb6f5556c30d3f5a092e68de0be9c710c60c9f4
git-subtree-dir: third_party/allwpilib_2017
git-subtree-split: 35ac87d6ff8b7f061c4f18c9ea316e5dccd4888a
diff --git a/wpilibc/shared/include/Base.h b/wpilibc/shared/include/Base.h
new file mode 100644
index 0000000..8374d2a
--- /dev/null
+++ b/wpilibc/shared/include/Base.h
@@ -0,0 +1,78 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2008-2017. 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
+
+// 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
+
+namespace frc {
+
+// 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 {};
+};
+
+} // namespace frc
+
+#include <atomic>
+
+namespace frc {
+
+// 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; }
+};
+
+} // namespace frc
+
+// For backwards compatibility
+#ifndef NAMESPACED_WPILIB
+using namespace frc; // NOLINT
+#endif