forked from OSchip/llvm-project
2811 lines
81 KiB
C++
2811 lines
81 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___FUNCTIONAL_FUNCTION_H
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#define _LIBCPP___FUNCTIONAL_FUNCTION_H
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#include <__config>
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#include <__debug>
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#include <__functional/binary_function.h>
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#include <__functional/invoke.h>
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#include <__functional/unary_function.h>
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#include <__iterator/iterator_traits.h>
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#include <__memory/allocator_traits.h>
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#include <__memory/compressed_pair.h>
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#include <__memory/shared_ptr.h>
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#include <exception>
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#include <memory> // TODO: replace with <__memory/__builtin_new_allocator.h>
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#include <type_traits>
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#include <utility>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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#pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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// bad_function_call
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class _LIBCPP_EXCEPTION_ABI bad_function_call
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: public exception
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{
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#ifdef _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION
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public:
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virtual ~bad_function_call() _NOEXCEPT;
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virtual const char* what() const _NOEXCEPT;
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#endif
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};
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_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
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void __throw_bad_function_call()
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{
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#ifndef _LIBCPP_NO_EXCEPTIONS
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throw bad_function_call();
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#else
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_VSTD::abort();
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#endif
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}
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#if defined(_LIBCPP_CXX03_LANG) && !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS) && __has_attribute(deprecated)
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# define _LIBCPP_DEPRECATED_CXX03_FUNCTION \
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__attribute__((deprecated("Using std::function in C++03 is not supported anymore. Please upgrade to C++11 or later, or use a different type")))
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#else
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# define _LIBCPP_DEPRECATED_CXX03_FUNCTION /* nothing */
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#endif
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template<class _Fp> class _LIBCPP_DEPRECATED_CXX03_FUNCTION _LIBCPP_TEMPLATE_VIS function; // undefined
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namespace __function
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{
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template<class _Rp>
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struct __maybe_derive_from_unary_function
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{
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};
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template<class _Rp, class _A1>
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struct __maybe_derive_from_unary_function<_Rp(_A1)>
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: public unary_function<_A1, _Rp>
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{
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};
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template<class _Rp>
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struct __maybe_derive_from_binary_function
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{
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};
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template<class _Rp, class _A1, class _A2>
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struct __maybe_derive_from_binary_function<_Rp(_A1, _A2)>
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: public binary_function<_A1, _A2, _Rp>
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{
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};
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template <class _Fp>
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_LIBCPP_INLINE_VISIBILITY
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bool __not_null(_Fp const&) { return true; }
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template <class _Fp>
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_LIBCPP_INLINE_VISIBILITY
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bool __not_null(_Fp* __ptr) { return __ptr; }
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template <class _Ret, class _Class>
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_LIBCPP_INLINE_VISIBILITY
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bool __not_null(_Ret _Class::*__ptr) { return __ptr; }
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template <class _Fp>
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_LIBCPP_INLINE_VISIBILITY
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bool __not_null(function<_Fp> const& __f) { return !!__f; }
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#ifdef _LIBCPP_HAS_EXTENSION_BLOCKS
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template <class _Rp, class ..._Args>
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_LIBCPP_INLINE_VISIBILITY
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bool __not_null(_Rp (^__p)(_Args...)) { return __p; }
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#endif
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} // namespace __function
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#ifndef _LIBCPP_CXX03_LANG
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namespace __function {
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// __alloc_func holds a functor and an allocator.
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template <class _Fp, class _Ap, class _FB> class __alloc_func;
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template <class _Fp, class _FB>
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class __default_alloc_func;
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template <class _Fp, class _Ap, class _Rp, class... _ArgTypes>
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class __alloc_func<_Fp, _Ap, _Rp(_ArgTypes...)>
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{
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__compressed_pair<_Fp, _Ap> __f_;
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public:
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typedef _LIBCPP_NODEBUG _Fp _Target;
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typedef _LIBCPP_NODEBUG _Ap _Alloc;
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_LIBCPP_INLINE_VISIBILITY
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const _Target& __target() const { return __f_.first(); }
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// WIN32 APIs may define __allocator, so use __get_allocator instead.
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_LIBCPP_INLINE_VISIBILITY
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const _Alloc& __get_allocator() const { return __f_.second(); }
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_LIBCPP_INLINE_VISIBILITY
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explicit __alloc_func(_Target&& __f)
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: __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)),
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_VSTD::forward_as_tuple())
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{
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}
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_LIBCPP_INLINE_VISIBILITY
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explicit __alloc_func(const _Target& __f, const _Alloc& __a)
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: __f_(piecewise_construct, _VSTD::forward_as_tuple(__f),
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_VSTD::forward_as_tuple(__a))
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{
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}
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_LIBCPP_INLINE_VISIBILITY
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explicit __alloc_func(const _Target& __f, _Alloc&& __a)
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: __f_(piecewise_construct, _VSTD::forward_as_tuple(__f),
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_VSTD::forward_as_tuple(_VSTD::move(__a)))
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{
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}
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_LIBCPP_INLINE_VISIBILITY
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explicit __alloc_func(_Target&& __f, _Alloc&& __a)
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: __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)),
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_VSTD::forward_as_tuple(_VSTD::move(__a)))
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{
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}
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_LIBCPP_INLINE_VISIBILITY
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_Rp operator()(_ArgTypes&&... __arg)
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{
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typedef __invoke_void_return_wrapper<_Rp> _Invoker;
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return _Invoker::__call(__f_.first(),
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_VSTD::forward<_ArgTypes>(__arg)...);
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}
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_LIBCPP_INLINE_VISIBILITY
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__alloc_func* __clone() const
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{
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typedef allocator_traits<_Alloc> __alloc_traits;
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typedef
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typename __rebind_alloc_helper<__alloc_traits, __alloc_func>::type
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_AA;
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_AA __a(__f_.second());
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typedef __allocator_destructor<_AA> _Dp;
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unique_ptr<__alloc_func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));
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::new ((void*)__hold.get()) __alloc_func(__f_.first(), _Alloc(__a));
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return __hold.release();
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}
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_LIBCPP_INLINE_VISIBILITY
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void destroy() _NOEXCEPT { __f_.~__compressed_pair<_Target, _Alloc>(); }
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static void __destroy_and_delete(__alloc_func* __f) {
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typedef allocator_traits<_Alloc> __alloc_traits;
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typedef typename __rebind_alloc_helper<__alloc_traits, __alloc_func>::type
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_FunAlloc;
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_FunAlloc __a(__f->__get_allocator());
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__f->destroy();
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__a.deallocate(__f, 1);
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}
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};
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template <class _Fp, class _Rp, class... _ArgTypes>
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class __default_alloc_func<_Fp, _Rp(_ArgTypes...)> {
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_Fp __f_;
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public:
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typedef _LIBCPP_NODEBUG _Fp _Target;
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_LIBCPP_INLINE_VISIBILITY
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const _Target& __target() const { return __f_; }
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_LIBCPP_INLINE_VISIBILITY
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explicit __default_alloc_func(_Target&& __f) : __f_(_VSTD::move(__f)) {}
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_LIBCPP_INLINE_VISIBILITY
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explicit __default_alloc_func(const _Target& __f) : __f_(__f) {}
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_LIBCPP_INLINE_VISIBILITY
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_Rp operator()(_ArgTypes&&... __arg) {
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typedef __invoke_void_return_wrapper<_Rp> _Invoker;
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return _Invoker::__call(__f_, _VSTD::forward<_ArgTypes>(__arg)...);
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}
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_LIBCPP_INLINE_VISIBILITY
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__default_alloc_func* __clone() const {
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__builtin_new_allocator::__holder_t __hold =
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__builtin_new_allocator::__allocate_type<__default_alloc_func>(1);
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__default_alloc_func* __res =
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::new ((void*)__hold.get()) __default_alloc_func(__f_);
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(void)__hold.release();
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return __res;
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}
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_LIBCPP_INLINE_VISIBILITY
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void destroy() _NOEXCEPT { __f_.~_Target(); }
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static void __destroy_and_delete(__default_alloc_func* __f) {
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__f->destroy();
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__builtin_new_allocator::__deallocate_type<__default_alloc_func>(__f, 1);
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}
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};
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// __base provides an abstract interface for copyable functors.
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template<class _Fp> class _LIBCPP_TEMPLATE_VIS __base;
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template<class _Rp, class ..._ArgTypes>
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class __base<_Rp(_ArgTypes...)>
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{
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__base(const __base&);
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__base& operator=(const __base&);
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public:
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_LIBCPP_INLINE_VISIBILITY __base() {}
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_LIBCPP_INLINE_VISIBILITY virtual ~__base() {}
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virtual __base* __clone() const = 0;
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virtual void __clone(__base*) const = 0;
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virtual void destroy() _NOEXCEPT = 0;
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virtual void destroy_deallocate() _NOEXCEPT = 0;
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virtual _Rp operator()(_ArgTypes&& ...) = 0;
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#ifndef _LIBCPP_NO_RTTI
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virtual const void* target(const type_info&) const _NOEXCEPT = 0;
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virtual const std::type_info& target_type() const _NOEXCEPT = 0;
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#endif // _LIBCPP_NO_RTTI
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};
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// __func implements __base for a given functor type.
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template<class _FD, class _Alloc, class _FB> class __func;
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template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>
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class __func<_Fp, _Alloc, _Rp(_ArgTypes...)>
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: public __base<_Rp(_ArgTypes...)>
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{
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__alloc_func<_Fp, _Alloc, _Rp(_ArgTypes...)> __f_;
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public:
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_LIBCPP_INLINE_VISIBILITY
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explicit __func(_Fp&& __f)
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: __f_(_VSTD::move(__f)) {}
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_LIBCPP_INLINE_VISIBILITY
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explicit __func(const _Fp& __f, const _Alloc& __a)
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: __f_(__f, __a) {}
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_LIBCPP_INLINE_VISIBILITY
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explicit __func(const _Fp& __f, _Alloc&& __a)
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: __f_(__f, _VSTD::move(__a)) {}
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_LIBCPP_INLINE_VISIBILITY
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explicit __func(_Fp&& __f, _Alloc&& __a)
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: __f_(_VSTD::move(__f), _VSTD::move(__a)) {}
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virtual __base<_Rp(_ArgTypes...)>* __clone() const;
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virtual void __clone(__base<_Rp(_ArgTypes...)>*) const;
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virtual void destroy() _NOEXCEPT;
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virtual void destroy_deallocate() _NOEXCEPT;
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virtual _Rp operator()(_ArgTypes&&... __arg);
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#ifndef _LIBCPP_NO_RTTI
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virtual const void* target(const type_info&) const _NOEXCEPT;
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virtual const std::type_info& target_type() const _NOEXCEPT;
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#endif // _LIBCPP_NO_RTTI
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};
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template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>
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__base<_Rp(_ArgTypes...)>*
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__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone() const
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{
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typedef allocator_traits<_Alloc> __alloc_traits;
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typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap;
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_Ap __a(__f_.__get_allocator());
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typedef __allocator_destructor<_Ap> _Dp;
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unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));
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::new ((void*)__hold.get()) __func(__f_.__target(), _Alloc(__a));
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return __hold.release();
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}
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template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>
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void
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__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone(__base<_Rp(_ArgTypes...)>* __p) const
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{
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::new ((void*)__p) __func(__f_.__target(), __f_.__get_allocator());
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}
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template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>
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void
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__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy() _NOEXCEPT
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{
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__f_.destroy();
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}
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template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>
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void
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__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy_deallocate() _NOEXCEPT
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{
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typedef allocator_traits<_Alloc> __alloc_traits;
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typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap;
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_Ap __a(__f_.__get_allocator());
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__f_.destroy();
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__a.deallocate(this, 1);
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}
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template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>
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_Rp
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__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::operator()(_ArgTypes&& ... __arg)
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{
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return __f_(_VSTD::forward<_ArgTypes>(__arg)...);
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}
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#ifndef _LIBCPP_NO_RTTI
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template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>
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const void*
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__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target(const type_info& __ti) const _NOEXCEPT
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{
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if (__ti == typeid(_Fp))
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return &__f_.__target();
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return nullptr;
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}
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template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>
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const std::type_info&
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__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target_type() const _NOEXCEPT
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{
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return typeid(_Fp);
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}
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#endif // _LIBCPP_NO_RTTI
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// __value_func creates a value-type from a __func.
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template <class _Fp> class __value_func;
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template <class _Rp, class... _ArgTypes> class __value_func<_Rp(_ArgTypes...)>
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{
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typename aligned_storage<3 * sizeof(void*)>::type __buf_;
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typedef __base<_Rp(_ArgTypes...)> __func;
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__func* __f_;
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_LIBCPP_NO_CFI static __func* __as_base(void* p)
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{
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return reinterpret_cast<__func*>(p);
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}
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public:
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_LIBCPP_INLINE_VISIBILITY
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__value_func() _NOEXCEPT : __f_(nullptr) {}
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template <class _Fp, class _Alloc>
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_LIBCPP_INLINE_VISIBILITY __value_func(_Fp&& __f, const _Alloc& __a)
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: __f_(nullptr)
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{
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typedef allocator_traits<_Alloc> __alloc_traits;
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typedef __function::__func<_Fp, _Alloc, _Rp(_ArgTypes...)> _Fun;
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typedef typename __rebind_alloc_helper<__alloc_traits, _Fun>::type
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_FunAlloc;
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if (__function::__not_null(__f))
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{
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_FunAlloc __af(__a);
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if (sizeof(_Fun) <= sizeof(__buf_) &&
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is_nothrow_copy_constructible<_Fp>::value &&
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is_nothrow_copy_constructible<_FunAlloc>::value)
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{
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__f_ =
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::new ((void*)&__buf_) _Fun(_VSTD::move(__f), _Alloc(__af));
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}
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else
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{
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typedef __allocator_destructor<_FunAlloc> _Dp;
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unique_ptr<__func, _Dp> __hold(__af.allocate(1), _Dp(__af, 1));
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::new ((void*)__hold.get()) _Fun(_VSTD::move(__f), _Alloc(__a));
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__f_ = __hold.release();
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}
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}
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}
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template <class _Fp,
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class = typename enable_if<!is_same<typename decay<_Fp>::type, __value_func>::value>::type>
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_LIBCPP_INLINE_VISIBILITY explicit __value_func(_Fp&& __f)
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: __value_func(_VSTD::forward<_Fp>(__f), allocator<_Fp>()) {}
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_LIBCPP_INLINE_VISIBILITY
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__value_func(const __value_func& __f)
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|
{
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|
if (__f.__f_ == nullptr)
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|
__f_ = nullptr;
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else if ((void*)__f.__f_ == &__f.__buf_)
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{
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__f_ = __as_base(&__buf_);
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__f.__f_->__clone(__f_);
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}
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else
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__f_ = __f.__f_->__clone();
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}
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|
_LIBCPP_INLINE_VISIBILITY
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|
__value_func(__value_func&& __f) _NOEXCEPT
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|
{
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|
if (__f.__f_ == nullptr)
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|
__f_ = nullptr;
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|
else if ((void*)__f.__f_ == &__f.__buf_)
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|
{
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|
__f_ = __as_base(&__buf_);
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|
__f.__f_->__clone(__f_);
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|
}
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else
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|
{
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__f_ = __f.__f_;
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__f.__f_ = nullptr;
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}
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}
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_LIBCPP_INLINE_VISIBILITY
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~__value_func()
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|
{
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if ((void*)__f_ == &__buf_)
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__f_->destroy();
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else if (__f_)
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__f_->destroy_deallocate();
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}
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_LIBCPP_INLINE_VISIBILITY
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__value_func& operator=(__value_func&& __f)
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|
{
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*this = nullptr;
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if (__f.__f_ == nullptr)
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__f_ = nullptr;
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else if ((void*)__f.__f_ == &__f.__buf_)
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{
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__f_ = __as_base(&__buf_);
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__f.__f_->__clone(__f_);
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}
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else
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|
{
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__f_ = __f.__f_;
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__f.__f_ = nullptr;
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}
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return *this;
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}
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_LIBCPP_INLINE_VISIBILITY
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|
__value_func& operator=(nullptr_t)
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|
{
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|
__func* __f = __f_;
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__f_ = nullptr;
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|
if ((void*)__f == &__buf_)
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|
__f->destroy();
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|
else if (__f)
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|
__f->destroy_deallocate();
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|
return *this;
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}
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|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
_Rp operator()(_ArgTypes&&... __args) const
|
|
{
|
|
if (__f_ == nullptr)
|
|
__throw_bad_function_call();
|
|
return (*__f_)(_VSTD::forward<_ArgTypes>(__args)...);
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
void swap(__value_func& __f) _NOEXCEPT
|
|
{
|
|
if (&__f == this)
|
|
return;
|
|
if ((void*)__f_ == &__buf_ && (void*)__f.__f_ == &__f.__buf_)
|
|
{
|
|
typename aligned_storage<sizeof(__buf_)>::type __tempbuf;
|
|
__func* __t = __as_base(&__tempbuf);
|
|
__f_->__clone(__t);
|
|
__f_->destroy();
|
|
__f_ = nullptr;
|
|
__f.__f_->__clone(__as_base(&__buf_));
|
|
__f.__f_->destroy();
|
|
__f.__f_ = nullptr;
|
|
__f_ = __as_base(&__buf_);
|
|
__t->__clone(__as_base(&__f.__buf_));
|
|
__t->destroy();
|
|
__f.__f_ = __as_base(&__f.__buf_);
|
|
}
|
|
else if ((void*)__f_ == &__buf_)
|
|
{
|
|
__f_->__clone(__as_base(&__f.__buf_));
|
|
__f_->destroy();
|
|
__f_ = __f.__f_;
|
|
__f.__f_ = __as_base(&__f.__buf_);
|
|
}
|
|
else if ((void*)__f.__f_ == &__f.__buf_)
|
|
{
|
|
__f.__f_->__clone(__as_base(&__buf_));
|
|
__f.__f_->destroy();
|
|
__f.__f_ = __f_;
|
|
__f_ = __as_base(&__buf_);
|
|
}
|
|
else
|
|
_VSTD::swap(__f_, __f.__f_);
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
explicit operator bool() const _NOEXCEPT { return __f_ != nullptr; }
|
|
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
const std::type_info& target_type() const _NOEXCEPT
|
|
{
|
|
if (__f_ == nullptr)
|
|
return typeid(void);
|
|
return __f_->target_type();
|
|
}
|
|
|
|
template <typename _Tp>
|
|
_LIBCPP_INLINE_VISIBILITY const _Tp* target() const _NOEXCEPT
|
|
{
|
|
if (__f_ == nullptr)
|
|
return nullptr;
|
|
return (const _Tp*)__f_->target(typeid(_Tp));
|
|
}
|
|
#endif // _LIBCPP_NO_RTTI
|
|
};
|
|
|
|
// Storage for a functor object, to be used with __policy to manage copy and
|
|
// destruction.
|
|
union __policy_storage
|
|
{
|
|
mutable char __small[sizeof(void*) * 2];
|
|
void* __large;
|
|
};
|
|
|
|
// True if _Fun can safely be held in __policy_storage.__small.
|
|
template <typename _Fun>
|
|
struct __use_small_storage
|
|
: public integral_constant<
|
|
bool, sizeof(_Fun) <= sizeof(__policy_storage) &&
|
|
_LIBCPP_ALIGNOF(_Fun) <= _LIBCPP_ALIGNOF(__policy_storage) &&
|
|
is_trivially_copy_constructible<_Fun>::value &&
|
|
is_trivially_destructible<_Fun>::value> {};
|
|
|
|
// Policy contains information about how to copy, destroy, and move the
|
|
// underlying functor. You can think of it as a vtable of sorts.
|
|
struct __policy
|
|
{
|
|
// Used to copy or destroy __large values. null for trivial objects.
|
|
void* (*const __clone)(const void*);
|
|
void (*const __destroy)(void*);
|
|
|
|
// True if this is the null policy (no value).
|
|
const bool __is_null;
|
|
|
|
// The target type. May be null if RTTI is disabled.
|
|
const std::type_info* const __type_info;
|
|
|
|
// Returns a pointer to a static policy object suitable for the functor
|
|
// type.
|
|
template <typename _Fun>
|
|
_LIBCPP_INLINE_VISIBILITY static const __policy* __create()
|
|
{
|
|
return __choose_policy<_Fun>(__use_small_storage<_Fun>());
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
static const __policy* __create_empty()
|
|
{
|
|
static const _LIBCPP_CONSTEXPR __policy __policy_ = {nullptr, nullptr,
|
|
true,
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
&typeid(void)
|
|
#else
|
|
nullptr
|
|
#endif
|
|
};
|
|
return &__policy_;
|
|
}
|
|
|
|
private:
|
|
template <typename _Fun> static void* __large_clone(const void* __s)
|
|
{
|
|
const _Fun* __f = static_cast<const _Fun*>(__s);
|
|
return __f->__clone();
|
|
}
|
|
|
|
template <typename _Fun>
|
|
static void __large_destroy(void* __s) {
|
|
_Fun::__destroy_and_delete(static_cast<_Fun*>(__s));
|
|
}
|
|
|
|
template <typename _Fun>
|
|
_LIBCPP_INLINE_VISIBILITY static const __policy*
|
|
__choose_policy(/* is_small = */ false_type) {
|
|
static const _LIBCPP_CONSTEXPR __policy __policy_ = {
|
|
&__large_clone<_Fun>, &__large_destroy<_Fun>, false,
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
&typeid(typename _Fun::_Target)
|
|
#else
|
|
nullptr
|
|
#endif
|
|
};
|
|
return &__policy_;
|
|
}
|
|
|
|
template <typename _Fun>
|
|
_LIBCPP_INLINE_VISIBILITY static const __policy*
|
|
__choose_policy(/* is_small = */ true_type)
|
|
{
|
|
static const _LIBCPP_CONSTEXPR __policy __policy_ = {
|
|
nullptr, nullptr, false,
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
&typeid(typename _Fun::_Target)
|
|
#else
|
|
nullptr
|
|
#endif
|
|
};
|
|
return &__policy_;
|
|
}
|
|
};
|
|
|
|
// Used to choose between perfect forwarding or pass-by-value. Pass-by-value is
|
|
// faster for types that can be passed in registers.
|
|
template <typename _Tp>
|
|
using __fast_forward =
|
|
typename conditional<is_scalar<_Tp>::value, _Tp, _Tp&&>::type;
|
|
|
|
// __policy_invoker calls an instance of __alloc_func held in __policy_storage.
|
|
|
|
template <class _Fp> struct __policy_invoker;
|
|
|
|
template <class _Rp, class... _ArgTypes>
|
|
struct __policy_invoker<_Rp(_ArgTypes...)>
|
|
{
|
|
typedef _Rp (*__Call)(const __policy_storage*,
|
|
__fast_forward<_ArgTypes>...);
|
|
|
|
__Call __call_;
|
|
|
|
// Creates an invoker that throws bad_function_call.
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
__policy_invoker() : __call_(&__call_empty) {}
|
|
|
|
// Creates an invoker that calls the given instance of __func.
|
|
template <typename _Fun>
|
|
_LIBCPP_INLINE_VISIBILITY static __policy_invoker __create()
|
|
{
|
|
return __policy_invoker(&__call_impl<_Fun>);
|
|
}
|
|
|
|
private:
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
explicit __policy_invoker(__Call __c) : __call_(__c) {}
|
|
|
|
static _Rp __call_empty(const __policy_storage*,
|
|
__fast_forward<_ArgTypes>...)
|
|
{
|
|
__throw_bad_function_call();
|
|
}
|
|
|
|
template <typename _Fun>
|
|
static _Rp __call_impl(const __policy_storage* __buf,
|
|
__fast_forward<_ArgTypes>... __args)
|
|
{
|
|
_Fun* __f = reinterpret_cast<_Fun*>(__use_small_storage<_Fun>::value
|
|
? &__buf->__small
|
|
: __buf->__large);
|
|
return (*__f)(_VSTD::forward<_ArgTypes>(__args)...);
|
|
}
|
|
};
|
|
|
|
// __policy_func uses a __policy and __policy_invoker to create a type-erased,
|
|
// copyable functor.
|
|
|
|
template <class _Fp> class __policy_func;
|
|
|
|
template <class _Rp, class... _ArgTypes> class __policy_func<_Rp(_ArgTypes...)>
|
|
{
|
|
// Inline storage for small objects.
|
|
__policy_storage __buf_;
|
|
|
|
// Calls the value stored in __buf_. This could technically be part of
|
|
// policy, but storing it here eliminates a level of indirection inside
|
|
// operator().
|
|
typedef __function::__policy_invoker<_Rp(_ArgTypes...)> __invoker;
|
|
__invoker __invoker_;
|
|
|
|
// The policy that describes how to move / copy / destroy __buf_. Never
|
|
// null, even if the function is empty.
|
|
const __policy* __policy_;
|
|
|
|
public:
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
__policy_func() : __policy_(__policy::__create_empty()) {}
|
|
|
|
template <class _Fp, class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY __policy_func(_Fp&& __f, const _Alloc& __a)
|
|
: __policy_(__policy::__create_empty())
|
|
{
|
|
typedef __alloc_func<_Fp, _Alloc, _Rp(_ArgTypes...)> _Fun;
|
|
typedef allocator_traits<_Alloc> __alloc_traits;
|
|
typedef typename __rebind_alloc_helper<__alloc_traits, _Fun>::type
|
|
_FunAlloc;
|
|
|
|
if (__function::__not_null(__f))
|
|
{
|
|
__invoker_ = __invoker::template __create<_Fun>();
|
|
__policy_ = __policy::__create<_Fun>();
|
|
|
|
_FunAlloc __af(__a);
|
|
if (__use_small_storage<_Fun>())
|
|
{
|
|
::new ((void*)&__buf_.__small)
|
|
_Fun(_VSTD::move(__f), _Alloc(__af));
|
|
}
|
|
else
|
|
{
|
|
typedef __allocator_destructor<_FunAlloc> _Dp;
|
|
unique_ptr<_Fun, _Dp> __hold(__af.allocate(1), _Dp(__af, 1));
|
|
::new ((void*)__hold.get())
|
|
_Fun(_VSTD::move(__f), _Alloc(__af));
|
|
__buf_.__large = __hold.release();
|
|
}
|
|
}
|
|
}
|
|
|
|
template <class _Fp, class = typename enable_if<!is_same<typename decay<_Fp>::type, __policy_func>::value>::type>
|
|
_LIBCPP_INLINE_VISIBILITY explicit __policy_func(_Fp&& __f)
|
|
: __policy_(__policy::__create_empty()) {
|
|
typedef __default_alloc_func<_Fp, _Rp(_ArgTypes...)> _Fun;
|
|
|
|
if (__function::__not_null(__f)) {
|
|
__invoker_ = __invoker::template __create<_Fun>();
|
|
__policy_ = __policy::__create<_Fun>();
|
|
if (__use_small_storage<_Fun>()) {
|
|
::new ((void*)&__buf_.__small) _Fun(_VSTD::move(__f));
|
|
} else {
|
|
__builtin_new_allocator::__holder_t __hold =
|
|
__builtin_new_allocator::__allocate_type<_Fun>(1);
|
|
__buf_.__large = ::new ((void*)__hold.get()) _Fun(_VSTD::move(__f));
|
|
(void)__hold.release();
|
|
}
|
|
}
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
__policy_func(const __policy_func& __f)
|
|
: __buf_(__f.__buf_), __invoker_(__f.__invoker_),
|
|
__policy_(__f.__policy_)
|
|
{
|
|
if (__policy_->__clone)
|
|
__buf_.__large = __policy_->__clone(__f.__buf_.__large);
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
__policy_func(__policy_func&& __f)
|
|
: __buf_(__f.__buf_), __invoker_(__f.__invoker_),
|
|
__policy_(__f.__policy_)
|
|
{
|
|
if (__policy_->__destroy)
|
|
{
|
|
__f.__policy_ = __policy::__create_empty();
|
|
__f.__invoker_ = __invoker();
|
|
}
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
~__policy_func()
|
|
{
|
|
if (__policy_->__destroy)
|
|
__policy_->__destroy(__buf_.__large);
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
__policy_func& operator=(__policy_func&& __f)
|
|
{
|
|
*this = nullptr;
|
|
__buf_ = __f.__buf_;
|
|
__invoker_ = __f.__invoker_;
|
|
__policy_ = __f.__policy_;
|
|
__f.__policy_ = __policy::__create_empty();
|
|
__f.__invoker_ = __invoker();
|
|
return *this;
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
__policy_func& operator=(nullptr_t)
|
|
{
|
|
const __policy* __p = __policy_;
|
|
__policy_ = __policy::__create_empty();
|
|
__invoker_ = __invoker();
|
|
if (__p->__destroy)
|
|
__p->__destroy(__buf_.__large);
|
|
return *this;
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
_Rp operator()(_ArgTypes&&... __args) const
|
|
{
|
|
return __invoker_.__call_(_VSTD::addressof(__buf_),
|
|
_VSTD::forward<_ArgTypes>(__args)...);
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
void swap(__policy_func& __f)
|
|
{
|
|
_VSTD::swap(__invoker_, __f.__invoker_);
|
|
_VSTD::swap(__policy_, __f.__policy_);
|
|
_VSTD::swap(__buf_, __f.__buf_);
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
explicit operator bool() const _NOEXCEPT
|
|
{
|
|
return !__policy_->__is_null;
|
|
}
|
|
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
const std::type_info& target_type() const _NOEXCEPT
|
|
{
|
|
return *__policy_->__type_info;
|
|
}
|
|
|
|
template <typename _Tp>
|
|
_LIBCPP_INLINE_VISIBILITY const _Tp* target() const _NOEXCEPT
|
|
{
|
|
if (__policy_->__is_null || typeid(_Tp) != *__policy_->__type_info)
|
|
return nullptr;
|
|
if (__policy_->__clone) // Out of line storage.
|
|
return reinterpret_cast<const _Tp*>(__buf_.__large);
|
|
else
|
|
return reinterpret_cast<const _Tp*>(&__buf_.__small);
|
|
}
|
|
#endif // _LIBCPP_NO_RTTI
|
|
};
|
|
|
|
#if defined(_LIBCPP_HAS_BLOCKS_RUNTIME) && !defined(_LIBCPP_HAS_OBJC_ARC)
|
|
|
|
extern "C" void *_Block_copy(const void *);
|
|
extern "C" void _Block_release(const void *);
|
|
|
|
template<class _Rp1, class ..._ArgTypes1, class _Alloc, class _Rp, class ..._ArgTypes>
|
|
class __func<_Rp1(^)(_ArgTypes1...), _Alloc, _Rp(_ArgTypes...)>
|
|
: public __base<_Rp(_ArgTypes...)>
|
|
{
|
|
typedef _Rp1(^__block_type)(_ArgTypes1...);
|
|
__block_type __f_;
|
|
|
|
public:
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
explicit __func(__block_type const& __f)
|
|
: __f_(reinterpret_cast<__block_type>(__f ? _Block_copy(__f) : nullptr))
|
|
{ }
|
|
|
|
// [TODO] add && to save on a retain
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
explicit __func(__block_type __f, const _Alloc& /* unused */)
|
|
: __f_(reinterpret_cast<__block_type>(__f ? _Block_copy(__f) : nullptr))
|
|
{ }
|
|
|
|
virtual __base<_Rp(_ArgTypes...)>* __clone() const {
|
|
_LIBCPP_ASSERT(false,
|
|
"Block pointers are just pointers, so they should always fit into "
|
|
"std::function's small buffer optimization. This function should "
|
|
"never be invoked.");
|
|
return nullptr;
|
|
}
|
|
|
|
virtual void __clone(__base<_Rp(_ArgTypes...)>* __p) const {
|
|
::new ((void*)__p) __func(__f_);
|
|
}
|
|
|
|
virtual void destroy() _NOEXCEPT {
|
|
if (__f_)
|
|
_Block_release(__f_);
|
|
__f_ = 0;
|
|
}
|
|
|
|
virtual void destroy_deallocate() _NOEXCEPT {
|
|
_LIBCPP_ASSERT(false,
|
|
"Block pointers are just pointers, so they should always fit into "
|
|
"std::function's small buffer optimization. This function should "
|
|
"never be invoked.");
|
|
}
|
|
|
|
virtual _Rp operator()(_ArgTypes&& ... __arg) {
|
|
return _VSTD::__invoke(__f_, _VSTD::forward<_ArgTypes>(__arg)...);
|
|
}
|
|
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
virtual const void* target(type_info const& __ti) const _NOEXCEPT {
|
|
if (__ti == typeid(__func::__block_type))
|
|
return &__f_;
|
|
return (const void*)nullptr;
|
|
}
|
|
|
|
virtual const std::type_info& target_type() const _NOEXCEPT {
|
|
return typeid(__func::__block_type);
|
|
}
|
|
#endif // _LIBCPP_NO_RTTI
|
|
};
|
|
|
|
#endif // _LIBCPP_HAS_EXTENSION_BLOCKS && !_LIBCPP_HAS_OBJC_ARC
|
|
|
|
} // __function
|
|
|
|
template<class _Rp, class ..._ArgTypes>
|
|
class _LIBCPP_TEMPLATE_VIS function<_Rp(_ArgTypes...)>
|
|
#if _LIBCPP_STD_VER <= 17 || !defined(_LIBCPP_ABI_NO_BINDER_BASES)
|
|
: public __function::__maybe_derive_from_unary_function<_Rp(_ArgTypes...)>,
|
|
public __function::__maybe_derive_from_binary_function<_Rp(_ArgTypes...)>
|
|
#endif
|
|
{
|
|
#ifndef _LIBCPP_ABI_OPTIMIZED_FUNCTION
|
|
typedef __function::__value_func<_Rp(_ArgTypes...)> __func;
|
|
#else
|
|
typedef __function::__policy_func<_Rp(_ArgTypes...)> __func;
|
|
#endif
|
|
|
|
__func __f_;
|
|
|
|
template <class _Fp, bool = _And<
|
|
_IsNotSame<__uncvref_t<_Fp>, function>,
|
|
__invokable<_Fp, _ArgTypes...>
|
|
>::value>
|
|
struct __callable;
|
|
template <class _Fp>
|
|
struct __callable<_Fp, true>
|
|
{
|
|
static const bool value = is_void<_Rp>::value ||
|
|
__is_core_convertible<typename __invoke_of<_Fp, _ArgTypes...>::type,
|
|
_Rp>::value;
|
|
};
|
|
template <class _Fp>
|
|
struct __callable<_Fp, false>
|
|
{
|
|
static const bool value = false;
|
|
};
|
|
|
|
template <class _Fp>
|
|
using _EnableIfLValueCallable = typename enable_if<__callable<_Fp&>::value>::type;
|
|
public:
|
|
typedef _Rp result_type;
|
|
|
|
// construct/copy/destroy:
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
function() _NOEXCEPT { }
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
function(nullptr_t) _NOEXCEPT {}
|
|
function(const function&);
|
|
function(function&&) _NOEXCEPT;
|
|
template<class _Fp, class = _EnableIfLValueCallable<_Fp>>
|
|
function(_Fp);
|
|
|
|
#if _LIBCPP_STD_VER <= 14
|
|
template<class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
function(allocator_arg_t, const _Alloc&) _NOEXCEPT {}
|
|
template<class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
function(allocator_arg_t, const _Alloc&, nullptr_t) _NOEXCEPT {}
|
|
template<class _Alloc>
|
|
function(allocator_arg_t, const _Alloc&, const function&);
|
|
template<class _Alloc>
|
|
function(allocator_arg_t, const _Alloc&, function&&);
|
|
template<class _Fp, class _Alloc, class = _EnableIfLValueCallable<_Fp>>
|
|
function(allocator_arg_t, const _Alloc& __a, _Fp __f);
|
|
#endif
|
|
|
|
function& operator=(const function&);
|
|
function& operator=(function&&) _NOEXCEPT;
|
|
function& operator=(nullptr_t) _NOEXCEPT;
|
|
template<class _Fp, class = _EnableIfLValueCallable<typename decay<_Fp>::type>>
|
|
function& operator=(_Fp&&);
|
|
|
|
~function();
|
|
|
|
// function modifiers:
|
|
void swap(function&) _NOEXCEPT;
|
|
|
|
#if _LIBCPP_STD_VER <= 14
|
|
template<class _Fp, class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
void assign(_Fp&& __f, const _Alloc& __a)
|
|
{function(allocator_arg, __a, _VSTD::forward<_Fp>(__f)).swap(*this);}
|
|
#endif
|
|
|
|
// function capacity:
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
explicit operator bool() const _NOEXCEPT {
|
|
return static_cast<bool>(__f_);
|
|
}
|
|
|
|
// deleted overloads close possible hole in the type system
|
|
template<class _R2, class... _ArgTypes2>
|
|
bool operator==(const function<_R2(_ArgTypes2...)>&) const = delete;
|
|
template<class _R2, class... _ArgTypes2>
|
|
bool operator!=(const function<_R2(_ArgTypes2...)>&) const = delete;
|
|
public:
|
|
// function invocation:
|
|
_Rp operator()(_ArgTypes...) const;
|
|
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
// function target access:
|
|
const std::type_info& target_type() const _NOEXCEPT;
|
|
template <typename _Tp> _Tp* target() _NOEXCEPT;
|
|
template <typename _Tp> const _Tp* target() const _NOEXCEPT;
|
|
#endif // _LIBCPP_NO_RTTI
|
|
};
|
|
|
|
#if _LIBCPP_STD_VER >= 17
|
|
template<class _Rp, class ..._Ap>
|
|
function(_Rp(*)(_Ap...)) -> function<_Rp(_Ap...)>;
|
|
|
|
template<class _Fp>
|
|
struct __strip_signature;
|
|
|
|
template<class _Rp, class _Gp, class ..._Ap>
|
|
struct __strip_signature<_Rp (_Gp::*) (_Ap...)> { using type = _Rp(_Ap...); };
|
|
template<class _Rp, class _Gp, class ..._Ap>
|
|
struct __strip_signature<_Rp (_Gp::*) (_Ap...) const> { using type = _Rp(_Ap...); };
|
|
template<class _Rp, class _Gp, class ..._Ap>
|
|
struct __strip_signature<_Rp (_Gp::*) (_Ap...) volatile> { using type = _Rp(_Ap...); };
|
|
template<class _Rp, class _Gp, class ..._Ap>
|
|
struct __strip_signature<_Rp (_Gp::*) (_Ap...) const volatile> { using type = _Rp(_Ap...); };
|
|
|
|
template<class _Rp, class _Gp, class ..._Ap>
|
|
struct __strip_signature<_Rp (_Gp::*) (_Ap...) &> { using type = _Rp(_Ap...); };
|
|
template<class _Rp, class _Gp, class ..._Ap>
|
|
struct __strip_signature<_Rp (_Gp::*) (_Ap...) const &> { using type = _Rp(_Ap...); };
|
|
template<class _Rp, class _Gp, class ..._Ap>
|
|
struct __strip_signature<_Rp (_Gp::*) (_Ap...) volatile &> { using type = _Rp(_Ap...); };
|
|
template<class _Rp, class _Gp, class ..._Ap>
|
|
struct __strip_signature<_Rp (_Gp::*) (_Ap...) const volatile &> { using type = _Rp(_Ap...); };
|
|
|
|
template<class _Rp, class _Gp, class ..._Ap>
|
|
struct __strip_signature<_Rp (_Gp::*) (_Ap...) noexcept> { using type = _Rp(_Ap...); };
|
|
template<class _Rp, class _Gp, class ..._Ap>
|
|
struct __strip_signature<_Rp (_Gp::*) (_Ap...) const noexcept> { using type = _Rp(_Ap...); };
|
|
template<class _Rp, class _Gp, class ..._Ap>
|
|
struct __strip_signature<_Rp (_Gp::*) (_Ap...) volatile noexcept> { using type = _Rp(_Ap...); };
|
|
template<class _Rp, class _Gp, class ..._Ap>
|
|
struct __strip_signature<_Rp (_Gp::*) (_Ap...) const volatile noexcept> { using type = _Rp(_Ap...); };
|
|
|
|
template<class _Rp, class _Gp, class ..._Ap>
|
|
struct __strip_signature<_Rp (_Gp::*) (_Ap...) & noexcept> { using type = _Rp(_Ap...); };
|
|
template<class _Rp, class _Gp, class ..._Ap>
|
|
struct __strip_signature<_Rp (_Gp::*) (_Ap...) const & noexcept> { using type = _Rp(_Ap...); };
|
|
template<class _Rp, class _Gp, class ..._Ap>
|
|
struct __strip_signature<_Rp (_Gp::*) (_Ap...) volatile & noexcept> { using type = _Rp(_Ap...); };
|
|
template<class _Rp, class _Gp, class ..._Ap>
|
|
struct __strip_signature<_Rp (_Gp::*) (_Ap...) const volatile & noexcept> { using type = _Rp(_Ap...); };
|
|
|
|
template<class _Fp, class _Stripped = typename __strip_signature<decltype(&_Fp::operator())>::type>
|
|
function(_Fp) -> function<_Stripped>;
|
|
#endif // _LIBCPP_STD_VER >= 17
|
|
|
|
template<class _Rp, class ..._ArgTypes>
|
|
function<_Rp(_ArgTypes...)>::function(const function& __f) : __f_(__f.__f_) {}
|
|
|
|
#if _LIBCPP_STD_VER <= 14
|
|
template<class _Rp, class ..._ArgTypes>
|
|
template <class _Alloc>
|
|
function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&,
|
|
const function& __f) : __f_(__f.__f_) {}
|
|
#endif
|
|
|
|
template <class _Rp, class... _ArgTypes>
|
|
function<_Rp(_ArgTypes...)>::function(function&& __f) _NOEXCEPT
|
|
: __f_(_VSTD::move(__f.__f_)) {}
|
|
|
|
#if _LIBCPP_STD_VER <= 14
|
|
template<class _Rp, class ..._ArgTypes>
|
|
template <class _Alloc>
|
|
function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&,
|
|
function&& __f)
|
|
: __f_(_VSTD::move(__f.__f_)) {}
|
|
#endif
|
|
|
|
template <class _Rp, class... _ArgTypes>
|
|
template <class _Fp, class>
|
|
function<_Rp(_ArgTypes...)>::function(_Fp __f) : __f_(_VSTD::move(__f)) {}
|
|
|
|
#if _LIBCPP_STD_VER <= 14
|
|
template <class _Rp, class... _ArgTypes>
|
|
template <class _Fp, class _Alloc, class>
|
|
function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc& __a,
|
|
_Fp __f)
|
|
: __f_(_VSTD::move(__f), __a) {}
|
|
#endif
|
|
|
|
template<class _Rp, class ..._ArgTypes>
|
|
function<_Rp(_ArgTypes...)>&
|
|
function<_Rp(_ArgTypes...)>::operator=(const function& __f)
|
|
{
|
|
function(__f).swap(*this);
|
|
return *this;
|
|
}
|
|
|
|
template<class _Rp, class ..._ArgTypes>
|
|
function<_Rp(_ArgTypes...)>&
|
|
function<_Rp(_ArgTypes...)>::operator=(function&& __f) _NOEXCEPT
|
|
{
|
|
__f_ = _VSTD::move(__f.__f_);
|
|
return *this;
|
|
}
|
|
|
|
template<class _Rp, class ..._ArgTypes>
|
|
function<_Rp(_ArgTypes...)>&
|
|
function<_Rp(_ArgTypes...)>::operator=(nullptr_t) _NOEXCEPT
|
|
{
|
|
__f_ = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
template<class _Rp, class ..._ArgTypes>
|
|
template <class _Fp, class>
|
|
function<_Rp(_ArgTypes...)>&
|
|
function<_Rp(_ArgTypes...)>::operator=(_Fp&& __f)
|
|
{
|
|
function(_VSTD::forward<_Fp>(__f)).swap(*this);
|
|
return *this;
|
|
}
|
|
|
|
template<class _Rp, class ..._ArgTypes>
|
|
function<_Rp(_ArgTypes...)>::~function() {}
|
|
|
|
template<class _Rp, class ..._ArgTypes>
|
|
void
|
|
function<_Rp(_ArgTypes...)>::swap(function& __f) _NOEXCEPT
|
|
{
|
|
__f_.swap(__f.__f_);
|
|
}
|
|
|
|
template<class _Rp, class ..._ArgTypes>
|
|
_Rp
|
|
function<_Rp(_ArgTypes...)>::operator()(_ArgTypes... __arg) const
|
|
{
|
|
return __f_(_VSTD::forward<_ArgTypes>(__arg)...);
|
|
}
|
|
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
|
|
template<class _Rp, class ..._ArgTypes>
|
|
const std::type_info&
|
|
function<_Rp(_ArgTypes...)>::target_type() const _NOEXCEPT
|
|
{
|
|
return __f_.target_type();
|
|
}
|
|
|
|
template<class _Rp, class ..._ArgTypes>
|
|
template <typename _Tp>
|
|
_Tp*
|
|
function<_Rp(_ArgTypes...)>::target() _NOEXCEPT
|
|
{
|
|
return (_Tp*)(__f_.template target<_Tp>());
|
|
}
|
|
|
|
template<class _Rp, class ..._ArgTypes>
|
|
template <typename _Tp>
|
|
const _Tp*
|
|
function<_Rp(_ArgTypes...)>::target() const _NOEXCEPT
|
|
{
|
|
return __f_.template target<_Tp>();
|
|
}
|
|
|
|
#endif // _LIBCPP_NO_RTTI
|
|
|
|
template <class _Rp, class... _ArgTypes>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
bool
|
|
operator==(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return !__f;}
|
|
|
|
template <class _Rp, class... _ArgTypes>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
bool
|
|
operator==(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return !__f;}
|
|
|
|
template <class _Rp, class... _ArgTypes>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
bool
|
|
operator!=(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return (bool)__f;}
|
|
|
|
template <class _Rp, class... _ArgTypes>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
bool
|
|
operator!=(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return (bool)__f;}
|
|
|
|
template <class _Rp, class... _ArgTypes>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
void
|
|
swap(function<_Rp(_ArgTypes...)>& __x, function<_Rp(_ArgTypes...)>& __y) _NOEXCEPT
|
|
{return __x.swap(__y);}
|
|
|
|
#else // _LIBCPP_CXX03_LANG
|
|
|
|
namespace __function {
|
|
|
|
template<class _Fp> class __base;
|
|
|
|
template<class _Rp>
|
|
class __base<_Rp()>
|
|
{
|
|
__base(const __base&);
|
|
__base& operator=(const __base&);
|
|
public:
|
|
__base() {}
|
|
virtual ~__base() {}
|
|
virtual __base* __clone() const = 0;
|
|
virtual void __clone(__base*) const = 0;
|
|
virtual void destroy() = 0;
|
|
virtual void destroy_deallocate() = 0;
|
|
virtual _Rp operator()() = 0;
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
virtual const void* target(const type_info&) const = 0;
|
|
virtual const std::type_info& target_type() const = 0;
|
|
#endif // _LIBCPP_NO_RTTI
|
|
};
|
|
|
|
template<class _Rp, class _A0>
|
|
class __base<_Rp(_A0)>
|
|
{
|
|
__base(const __base&);
|
|
__base& operator=(const __base&);
|
|
public:
|
|
__base() {}
|
|
virtual ~__base() {}
|
|
virtual __base* __clone() const = 0;
|
|
virtual void __clone(__base*) const = 0;
|
|
virtual void destroy() = 0;
|
|
virtual void destroy_deallocate() = 0;
|
|
virtual _Rp operator()(_A0) = 0;
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
virtual const void* target(const type_info&) const = 0;
|
|
virtual const std::type_info& target_type() const = 0;
|
|
#endif // _LIBCPP_NO_RTTI
|
|
};
|
|
|
|
template<class _Rp, class _A0, class _A1>
|
|
class __base<_Rp(_A0, _A1)>
|
|
{
|
|
__base(const __base&);
|
|
__base& operator=(const __base&);
|
|
public:
|
|
__base() {}
|
|
virtual ~__base() {}
|
|
virtual __base* __clone() const = 0;
|
|
virtual void __clone(__base*) const = 0;
|
|
virtual void destroy() = 0;
|
|
virtual void destroy_deallocate() = 0;
|
|
virtual _Rp operator()(_A0, _A1) = 0;
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
virtual const void* target(const type_info&) const = 0;
|
|
virtual const std::type_info& target_type() const = 0;
|
|
#endif // _LIBCPP_NO_RTTI
|
|
};
|
|
|
|
template<class _Rp, class _A0, class _A1, class _A2>
|
|
class __base<_Rp(_A0, _A1, _A2)>
|
|
{
|
|
__base(const __base&);
|
|
__base& operator=(const __base&);
|
|
public:
|
|
__base() {}
|
|
virtual ~__base() {}
|
|
virtual __base* __clone() const = 0;
|
|
virtual void __clone(__base*) const = 0;
|
|
virtual void destroy() = 0;
|
|
virtual void destroy_deallocate() = 0;
|
|
virtual _Rp operator()(_A0, _A1, _A2) = 0;
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
virtual const void* target(const type_info&) const = 0;
|
|
virtual const std::type_info& target_type() const = 0;
|
|
#endif // _LIBCPP_NO_RTTI
|
|
};
|
|
|
|
template<class _FD, class _Alloc, class _FB> class __func;
|
|
|
|
template<class _Fp, class _Alloc, class _Rp>
|
|
class __func<_Fp, _Alloc, _Rp()>
|
|
: public __base<_Rp()>
|
|
{
|
|
__compressed_pair<_Fp, _Alloc> __f_;
|
|
public:
|
|
explicit __func(_Fp __f) : __f_(_VSTD::move(__f), __default_init_tag()) {}
|
|
explicit __func(_Fp __f, _Alloc __a) : __f_(_VSTD::move(__f), _VSTD::move(__a)) {}
|
|
virtual __base<_Rp()>* __clone() const;
|
|
virtual void __clone(__base<_Rp()>*) const;
|
|
virtual void destroy();
|
|
virtual void destroy_deallocate();
|
|
virtual _Rp operator()();
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
virtual const void* target(const type_info&) const;
|
|
virtual const std::type_info& target_type() const;
|
|
#endif // _LIBCPP_NO_RTTI
|
|
};
|
|
|
|
template<class _Fp, class _Alloc, class _Rp>
|
|
__base<_Rp()>*
|
|
__func<_Fp, _Alloc, _Rp()>::__clone() const
|
|
{
|
|
typedef allocator_traits<_Alloc> __alloc_traits;
|
|
typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap;
|
|
_Ap __a(__f_.second());
|
|
typedef __allocator_destructor<_Ap> _Dp;
|
|
unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));
|
|
::new ((void*)__hold.get()) __func(__f_.first(), _Alloc(__a));
|
|
return __hold.release();
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp>
|
|
void
|
|
__func<_Fp, _Alloc, _Rp()>::__clone(__base<_Rp()>* __p) const
|
|
{
|
|
::new ((void*)__p) __func(__f_.first(), __f_.second());
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp>
|
|
void
|
|
__func<_Fp, _Alloc, _Rp()>::destroy()
|
|
{
|
|
__f_.~__compressed_pair<_Fp, _Alloc>();
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp>
|
|
void
|
|
__func<_Fp, _Alloc, _Rp()>::destroy_deallocate()
|
|
{
|
|
typedef allocator_traits<_Alloc> __alloc_traits;
|
|
typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap;
|
|
_Ap __a(__f_.second());
|
|
__f_.~__compressed_pair<_Fp, _Alloc>();
|
|
__a.deallocate(this, 1);
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp>
|
|
_Rp
|
|
__func<_Fp, _Alloc, _Rp()>::operator()()
|
|
{
|
|
typedef __invoke_void_return_wrapper<_Rp> _Invoker;
|
|
return _Invoker::__call(__f_.first());
|
|
}
|
|
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
|
|
template<class _Fp, class _Alloc, class _Rp>
|
|
const void*
|
|
__func<_Fp, _Alloc, _Rp()>::target(const type_info& __ti) const
|
|
{
|
|
if (__ti == typeid(_Fp))
|
|
return &__f_.first();
|
|
return (const void*)0;
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp>
|
|
const std::type_info&
|
|
__func<_Fp, _Alloc, _Rp()>::target_type() const
|
|
{
|
|
return typeid(_Fp);
|
|
}
|
|
|
|
#endif // _LIBCPP_NO_RTTI
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0>
|
|
class __func<_Fp, _Alloc, _Rp(_A0)>
|
|
: public __base<_Rp(_A0)>
|
|
{
|
|
__compressed_pair<_Fp, _Alloc> __f_;
|
|
public:
|
|
_LIBCPP_INLINE_VISIBILITY explicit __func(_Fp __f) : __f_(_VSTD::move(__f), __default_init_tag()) {}
|
|
_LIBCPP_INLINE_VISIBILITY explicit __func(_Fp __f, _Alloc __a)
|
|
: __f_(_VSTD::move(__f), _VSTD::move(__a)) {}
|
|
virtual __base<_Rp(_A0)>* __clone() const;
|
|
virtual void __clone(__base<_Rp(_A0)>*) const;
|
|
virtual void destroy();
|
|
virtual void destroy_deallocate();
|
|
virtual _Rp operator()(_A0);
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
virtual const void* target(const type_info&) const;
|
|
virtual const std::type_info& target_type() const;
|
|
#endif // _LIBCPP_NO_RTTI
|
|
};
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0>
|
|
__base<_Rp(_A0)>*
|
|
__func<_Fp, _Alloc, _Rp(_A0)>::__clone() const
|
|
{
|
|
typedef allocator_traits<_Alloc> __alloc_traits;
|
|
typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap;
|
|
_Ap __a(__f_.second());
|
|
typedef __allocator_destructor<_Ap> _Dp;
|
|
unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));
|
|
::new ((void*)__hold.get()) __func(__f_.first(), _Alloc(__a));
|
|
return __hold.release();
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0>
|
|
void
|
|
__func<_Fp, _Alloc, _Rp(_A0)>::__clone(__base<_Rp(_A0)>* __p) const
|
|
{
|
|
::new ((void*)__p) __func(__f_.first(), __f_.second());
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0>
|
|
void
|
|
__func<_Fp, _Alloc, _Rp(_A0)>::destroy()
|
|
{
|
|
__f_.~__compressed_pair<_Fp, _Alloc>();
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0>
|
|
void
|
|
__func<_Fp, _Alloc, _Rp(_A0)>::destroy_deallocate()
|
|
{
|
|
typedef allocator_traits<_Alloc> __alloc_traits;
|
|
typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap;
|
|
_Ap __a(__f_.second());
|
|
__f_.~__compressed_pair<_Fp, _Alloc>();
|
|
__a.deallocate(this, 1);
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0>
|
|
_Rp
|
|
__func<_Fp, _Alloc, _Rp(_A0)>::operator()(_A0 __a0)
|
|
{
|
|
typedef __invoke_void_return_wrapper<_Rp> _Invoker;
|
|
return _Invoker::__call(__f_.first(), __a0);
|
|
}
|
|
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0>
|
|
const void*
|
|
__func<_Fp, _Alloc, _Rp(_A0)>::target(const type_info& __ti) const
|
|
{
|
|
if (__ti == typeid(_Fp))
|
|
return &__f_.first();
|
|
return (const void*)0;
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0>
|
|
const std::type_info&
|
|
__func<_Fp, _Alloc, _Rp(_A0)>::target_type() const
|
|
{
|
|
return typeid(_Fp);
|
|
}
|
|
|
|
#endif // _LIBCPP_NO_RTTI
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1>
|
|
class __func<_Fp, _Alloc, _Rp(_A0, _A1)>
|
|
: public __base<_Rp(_A0, _A1)>
|
|
{
|
|
__compressed_pair<_Fp, _Alloc> __f_;
|
|
public:
|
|
_LIBCPP_INLINE_VISIBILITY explicit __func(_Fp __f) : __f_(_VSTD::move(__f), __default_init_tag()) {}
|
|
_LIBCPP_INLINE_VISIBILITY explicit __func(_Fp __f, _Alloc __a)
|
|
: __f_(_VSTD::move(__f), _VSTD::move(__a)) {}
|
|
virtual __base<_Rp(_A0, _A1)>* __clone() const;
|
|
virtual void __clone(__base<_Rp(_A0, _A1)>*) const;
|
|
virtual void destroy();
|
|
virtual void destroy_deallocate();
|
|
virtual _Rp operator()(_A0, _A1);
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
virtual const void* target(const type_info&) const;
|
|
virtual const std::type_info& target_type() const;
|
|
#endif // _LIBCPP_NO_RTTI
|
|
};
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1>
|
|
__base<_Rp(_A0, _A1)>*
|
|
__func<_Fp, _Alloc, _Rp(_A0, _A1)>::__clone() const
|
|
{
|
|
typedef allocator_traits<_Alloc> __alloc_traits;
|
|
typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap;
|
|
_Ap __a(__f_.second());
|
|
typedef __allocator_destructor<_Ap> _Dp;
|
|
unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));
|
|
::new ((void*)__hold.get()) __func(__f_.first(), _Alloc(__a));
|
|
return __hold.release();
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1>
|
|
void
|
|
__func<_Fp, _Alloc, _Rp(_A0, _A1)>::__clone(__base<_Rp(_A0, _A1)>* __p) const
|
|
{
|
|
::new ((void*)__p) __func(__f_.first(), __f_.second());
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1>
|
|
void
|
|
__func<_Fp, _Alloc, _Rp(_A0, _A1)>::destroy()
|
|
{
|
|
__f_.~__compressed_pair<_Fp, _Alloc>();
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1>
|
|
void
|
|
__func<_Fp, _Alloc, _Rp(_A0, _A1)>::destroy_deallocate()
|
|
{
|
|
typedef allocator_traits<_Alloc> __alloc_traits;
|
|
typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap;
|
|
_Ap __a(__f_.second());
|
|
__f_.~__compressed_pair<_Fp, _Alloc>();
|
|
__a.deallocate(this, 1);
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1>
|
|
_Rp
|
|
__func<_Fp, _Alloc, _Rp(_A0, _A1)>::operator()(_A0 __a0, _A1 __a1)
|
|
{
|
|
typedef __invoke_void_return_wrapper<_Rp> _Invoker;
|
|
return _Invoker::__call(__f_.first(), __a0, __a1);
|
|
}
|
|
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1>
|
|
const void*
|
|
__func<_Fp, _Alloc, _Rp(_A0, _A1)>::target(const type_info& __ti) const
|
|
{
|
|
if (__ti == typeid(_Fp))
|
|
return &__f_.first();
|
|
return (const void*)0;
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1>
|
|
const std::type_info&
|
|
__func<_Fp, _Alloc, _Rp(_A0, _A1)>::target_type() const
|
|
{
|
|
return typeid(_Fp);
|
|
}
|
|
|
|
#endif // _LIBCPP_NO_RTTI
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2>
|
|
class __func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>
|
|
: public __base<_Rp(_A0, _A1, _A2)>
|
|
{
|
|
__compressed_pair<_Fp, _Alloc> __f_;
|
|
public:
|
|
_LIBCPP_INLINE_VISIBILITY explicit __func(_Fp __f) : __f_(_VSTD::move(__f), __default_init_tag()) {}
|
|
_LIBCPP_INLINE_VISIBILITY explicit __func(_Fp __f, _Alloc __a)
|
|
: __f_(_VSTD::move(__f), _VSTD::move(__a)) {}
|
|
virtual __base<_Rp(_A0, _A1, _A2)>* __clone() const;
|
|
virtual void __clone(__base<_Rp(_A0, _A1, _A2)>*) const;
|
|
virtual void destroy();
|
|
virtual void destroy_deallocate();
|
|
virtual _Rp operator()(_A0, _A1, _A2);
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
virtual const void* target(const type_info&) const;
|
|
virtual const std::type_info& target_type() const;
|
|
#endif // _LIBCPP_NO_RTTI
|
|
};
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2>
|
|
__base<_Rp(_A0, _A1, _A2)>*
|
|
__func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::__clone() const
|
|
{
|
|
typedef allocator_traits<_Alloc> __alloc_traits;
|
|
typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap;
|
|
_Ap __a(__f_.second());
|
|
typedef __allocator_destructor<_Ap> _Dp;
|
|
unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));
|
|
::new ((void*)__hold.get()) __func(__f_.first(), _Alloc(__a));
|
|
return __hold.release();
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2>
|
|
void
|
|
__func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::__clone(__base<_Rp(_A0, _A1, _A2)>* __p) const
|
|
{
|
|
::new ((void*)__p) __func(__f_.first(), __f_.second());
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2>
|
|
void
|
|
__func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::destroy()
|
|
{
|
|
__f_.~__compressed_pair<_Fp, _Alloc>();
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2>
|
|
void
|
|
__func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::destroy_deallocate()
|
|
{
|
|
typedef allocator_traits<_Alloc> __alloc_traits;
|
|
typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap;
|
|
_Ap __a(__f_.second());
|
|
__f_.~__compressed_pair<_Fp, _Alloc>();
|
|
__a.deallocate(this, 1);
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2>
|
|
_Rp
|
|
__func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::operator()(_A0 __a0, _A1 __a1, _A2 __a2)
|
|
{
|
|
typedef __invoke_void_return_wrapper<_Rp> _Invoker;
|
|
return _Invoker::__call(__f_.first(), __a0, __a1, __a2);
|
|
}
|
|
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2>
|
|
const void*
|
|
__func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::target(const type_info& __ti) const
|
|
{
|
|
if (__ti == typeid(_Fp))
|
|
return &__f_.first();
|
|
return (const void*)0;
|
|
}
|
|
|
|
template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2>
|
|
const std::type_info&
|
|
__func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::target_type() const
|
|
{
|
|
return typeid(_Fp);
|
|
}
|
|
|
|
#endif // _LIBCPP_NO_RTTI
|
|
|
|
} // __function
|
|
|
|
template<class _Rp>
|
|
class _LIBCPP_TEMPLATE_VIS function<_Rp()>
|
|
{
|
|
typedef __function::__base<_Rp()> __base;
|
|
aligned_storage<3*sizeof(void*)>::type __buf_;
|
|
__base* __f_;
|
|
|
|
public:
|
|
typedef _Rp result_type;
|
|
|
|
// 20.7.16.2.1, construct/copy/destroy:
|
|
_LIBCPP_INLINE_VISIBILITY explicit function() : __f_(0) {}
|
|
_LIBCPP_INLINE_VISIBILITY function(nullptr_t) : __f_(0) {}
|
|
function(const function&);
|
|
template<class _Fp>
|
|
function(_Fp,
|
|
typename enable_if<!is_integral<_Fp>::value>::type* = 0);
|
|
|
|
template<class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
function(allocator_arg_t, const _Alloc&) : __f_(0) {}
|
|
template<class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
function(allocator_arg_t, const _Alloc&, nullptr_t) : __f_(0) {}
|
|
template<class _Alloc>
|
|
function(allocator_arg_t, const _Alloc&, const function&);
|
|
template<class _Fp, class _Alloc>
|
|
function(allocator_arg_t, const _Alloc& __a, _Fp __f,
|
|
typename enable_if<!is_integral<_Fp>::value>::type* = 0);
|
|
|
|
function& operator=(const function&);
|
|
function& operator=(nullptr_t);
|
|
template<class _Fp>
|
|
typename enable_if
|
|
<
|
|
!is_integral<_Fp>::value,
|
|
function&
|
|
>::type
|
|
operator=(_Fp);
|
|
|
|
~function();
|
|
|
|
// 20.7.16.2.2, function modifiers:
|
|
void swap(function&);
|
|
template<class _Fp, class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
void assign(_Fp __f, const _Alloc& __a)
|
|
{function(allocator_arg, __a, __f).swap(*this);}
|
|
|
|
// 20.7.16.2.3, function capacity:
|
|
_LIBCPP_INLINE_VISIBILITY explicit operator bool() const {return __f_;}
|
|
|
|
private:
|
|
// deleted overloads close possible hole in the type system
|
|
template<class _R2>
|
|
bool operator==(const function<_R2()>&) const;// = delete;
|
|
template<class _R2>
|
|
bool operator!=(const function<_R2()>&) const;// = delete;
|
|
public:
|
|
// 20.7.16.2.4, function invocation:
|
|
_Rp operator()() const;
|
|
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
// 20.7.16.2.5, function target access:
|
|
const std::type_info& target_type() const;
|
|
template <typename _Tp> _Tp* target();
|
|
template <typename _Tp> const _Tp* target() const;
|
|
#endif // _LIBCPP_NO_RTTI
|
|
};
|
|
|
|
template<class _Rp>
|
|
function<_Rp()>::function(const function& __f)
|
|
{
|
|
if (__f.__f_ == 0)
|
|
__f_ = 0;
|
|
else if (__f.__f_ == (const __base*)&__f.__buf_)
|
|
{
|
|
__f_ = (__base*)&__buf_;
|
|
__f.__f_->__clone(__f_);
|
|
}
|
|
else
|
|
__f_ = __f.__f_->__clone();
|
|
}
|
|
|
|
template<class _Rp>
|
|
template<class _Alloc>
|
|
function<_Rp()>::function(allocator_arg_t, const _Alloc&, const function& __f)
|
|
{
|
|
if (__f.__f_ == 0)
|
|
__f_ = 0;
|
|
else if (__f.__f_ == (const __base*)&__f.__buf_)
|
|
{
|
|
__f_ = (__base*)&__buf_;
|
|
__f.__f_->__clone(__f_);
|
|
}
|
|
else
|
|
__f_ = __f.__f_->__clone();
|
|
}
|
|
|
|
template<class _Rp>
|
|
template <class _Fp>
|
|
function<_Rp()>::function(_Fp __f,
|
|
typename enable_if<!is_integral<_Fp>::value>::type*)
|
|
: __f_(0)
|
|
{
|
|
if (__function::__not_null(__f))
|
|
{
|
|
typedef __function::__func<_Fp, allocator<_Fp>, _Rp()> _FF;
|
|
if (sizeof(_FF) <= sizeof(__buf_))
|
|
{
|
|
__f_ = (__base*)&__buf_;
|
|
::new ((void*)__f_) _FF(__f);
|
|
}
|
|
else
|
|
{
|
|
typedef allocator<_FF> _Ap;
|
|
_Ap __a;
|
|
typedef __allocator_destructor<_Ap> _Dp;
|
|
unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));
|
|
::new ((void*)__hold.get()) _FF(__f, allocator<_Fp>(__a));
|
|
__f_ = __hold.release();
|
|
}
|
|
}
|
|
}
|
|
|
|
template<class _Rp>
|
|
template <class _Fp, class _Alloc>
|
|
function<_Rp()>::function(allocator_arg_t, const _Alloc& __a0, _Fp __f,
|
|
typename enable_if<!is_integral<_Fp>::value>::type*)
|
|
: __f_(0)
|
|
{
|
|
typedef allocator_traits<_Alloc> __alloc_traits;
|
|
if (__function::__not_null(__f))
|
|
{
|
|
typedef __function::__func<_Fp, _Alloc, _Rp()> _FF;
|
|
if (sizeof(_FF) <= sizeof(__buf_))
|
|
{
|
|
__f_ = (__base*)&__buf_;
|
|
::new ((void*)__f_) _FF(__f, __a0);
|
|
}
|
|
else
|
|
{
|
|
typedef typename __rebind_alloc_helper<__alloc_traits, _FF>::type _Ap;
|
|
_Ap __a(__a0);
|
|
typedef __allocator_destructor<_Ap> _Dp;
|
|
unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));
|
|
::new ((void*)__hold.get()) _FF(__f, _Alloc(__a));
|
|
__f_ = __hold.release();
|
|
}
|
|
}
|
|
}
|
|
|
|
template<class _Rp>
|
|
function<_Rp()>&
|
|
function<_Rp()>::operator=(const function& __f)
|
|
{
|
|
if (__f)
|
|
function(__f).swap(*this);
|
|
else
|
|
*this = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
template<class _Rp>
|
|
function<_Rp()>&
|
|
function<_Rp()>::operator=(nullptr_t)
|
|
{
|
|
__base* __t = __f_;
|
|
__f_ = 0;
|
|
if (__t == (__base*)&__buf_)
|
|
__t->destroy();
|
|
else if (__t)
|
|
__t->destroy_deallocate();
|
|
return *this;
|
|
}
|
|
|
|
template<class _Rp>
|
|
template <class _Fp>
|
|
typename enable_if
|
|
<
|
|
!is_integral<_Fp>::value,
|
|
function<_Rp()>&
|
|
>::type
|
|
function<_Rp()>::operator=(_Fp __f)
|
|
{
|
|
function(_VSTD::move(__f)).swap(*this);
|
|
return *this;
|
|
}
|
|
|
|
template<class _Rp>
|
|
function<_Rp()>::~function()
|
|
{
|
|
if (__f_ == (__base*)&__buf_)
|
|
__f_->destroy();
|
|
else if (__f_)
|
|
__f_->destroy_deallocate();
|
|
}
|
|
|
|
template<class _Rp>
|
|
void
|
|
function<_Rp()>::swap(function& __f)
|
|
{
|
|
if (_VSTD::addressof(__f) == this)
|
|
return;
|
|
if (__f_ == (__base*)&__buf_ && __f.__f_ == (__base*)&__f.__buf_)
|
|
{
|
|
typename aligned_storage<sizeof(__buf_)>::type __tempbuf;
|
|
__base* __t = (__base*)&__tempbuf;
|
|
__f_->__clone(__t);
|
|
__f_->destroy();
|
|
__f_ = 0;
|
|
__f.__f_->__clone((__base*)&__buf_);
|
|
__f.__f_->destroy();
|
|
__f.__f_ = 0;
|
|
__f_ = (__base*)&__buf_;
|
|
__t->__clone((__base*)&__f.__buf_);
|
|
__t->destroy();
|
|
__f.__f_ = (__base*)&__f.__buf_;
|
|
}
|
|
else if (__f_ == (__base*)&__buf_)
|
|
{
|
|
__f_->__clone((__base*)&__f.__buf_);
|
|
__f_->destroy();
|
|
__f_ = __f.__f_;
|
|
__f.__f_ = (__base*)&__f.__buf_;
|
|
}
|
|
else if (__f.__f_ == (__base*)&__f.__buf_)
|
|
{
|
|
__f.__f_->__clone((__base*)&__buf_);
|
|
__f.__f_->destroy();
|
|
__f.__f_ = __f_;
|
|
__f_ = (__base*)&__buf_;
|
|
}
|
|
else
|
|
_VSTD::swap(__f_, __f.__f_);
|
|
}
|
|
|
|
template<class _Rp>
|
|
_Rp
|
|
function<_Rp()>::operator()() const
|
|
{
|
|
if (__f_ == 0)
|
|
__throw_bad_function_call();
|
|
return (*__f_)();
|
|
}
|
|
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
|
|
template<class _Rp>
|
|
const std::type_info&
|
|
function<_Rp()>::target_type() const
|
|
{
|
|
if (__f_ == 0)
|
|
return typeid(void);
|
|
return __f_->target_type();
|
|
}
|
|
|
|
template<class _Rp>
|
|
template <typename _Tp>
|
|
_Tp*
|
|
function<_Rp()>::target()
|
|
{
|
|
if (__f_ == 0)
|
|
return (_Tp*)0;
|
|
return (_Tp*) const_cast<void *>(__f_->target(typeid(_Tp)));
|
|
}
|
|
|
|
template<class _Rp>
|
|
template <typename _Tp>
|
|
const _Tp*
|
|
function<_Rp()>::target() const
|
|
{
|
|
if (__f_ == 0)
|
|
return (const _Tp*)0;
|
|
return (const _Tp*)__f_->target(typeid(_Tp));
|
|
}
|
|
|
|
#endif // _LIBCPP_NO_RTTI
|
|
|
|
template<class _Rp, class _A0>
|
|
class _LIBCPP_TEMPLATE_VIS function<_Rp(_A0)>
|
|
: public unary_function<_A0, _Rp>
|
|
{
|
|
typedef __function::__base<_Rp(_A0)> __base;
|
|
aligned_storage<3*sizeof(void*)>::type __buf_;
|
|
__base* __f_;
|
|
|
|
public:
|
|
typedef _Rp result_type;
|
|
|
|
// 20.7.16.2.1, construct/copy/destroy:
|
|
_LIBCPP_INLINE_VISIBILITY explicit function() : __f_(0) {}
|
|
_LIBCPP_INLINE_VISIBILITY function(nullptr_t) : __f_(0) {}
|
|
function(const function&);
|
|
template<class _Fp>
|
|
function(_Fp,
|
|
typename enable_if<!is_integral<_Fp>::value>::type* = 0);
|
|
|
|
template<class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
function(allocator_arg_t, const _Alloc&) : __f_(0) {}
|
|
template<class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
function(allocator_arg_t, const _Alloc&, nullptr_t) : __f_(0) {}
|
|
template<class _Alloc>
|
|
function(allocator_arg_t, const _Alloc&, const function&);
|
|
template<class _Fp, class _Alloc>
|
|
function(allocator_arg_t, const _Alloc& __a, _Fp __f,
|
|
typename enable_if<!is_integral<_Fp>::value>::type* = 0);
|
|
|
|
function& operator=(const function&);
|
|
function& operator=(nullptr_t);
|
|
template<class _Fp>
|
|
typename enable_if
|
|
<
|
|
!is_integral<_Fp>::value,
|
|
function&
|
|
>::type
|
|
operator=(_Fp);
|
|
|
|
~function();
|
|
|
|
// 20.7.16.2.2, function modifiers:
|
|
void swap(function&);
|
|
template<class _Fp, class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
void assign(_Fp __f, const _Alloc& __a)
|
|
{function(allocator_arg, __a, __f).swap(*this);}
|
|
|
|
// 20.7.16.2.3, function capacity:
|
|
_LIBCPP_INLINE_VISIBILITY explicit operator bool() const {return __f_;}
|
|
|
|
private:
|
|
// deleted overloads close possible hole in the type system
|
|
template<class _R2, class _B0>
|
|
bool operator==(const function<_R2(_B0)>&) const;// = delete;
|
|
template<class _R2, class _B0>
|
|
bool operator!=(const function<_R2(_B0)>&) const;// = delete;
|
|
public:
|
|
// 20.7.16.2.4, function invocation:
|
|
_Rp operator()(_A0) const;
|
|
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
// 20.7.16.2.5, function target access:
|
|
const std::type_info& target_type() const;
|
|
template <typename _Tp> _Tp* target();
|
|
template <typename _Tp> const _Tp* target() const;
|
|
#endif // _LIBCPP_NO_RTTI
|
|
};
|
|
|
|
template<class _Rp, class _A0>
|
|
function<_Rp(_A0)>::function(const function& __f)
|
|
{
|
|
if (__f.__f_ == 0)
|
|
__f_ = 0;
|
|
else if (__f.__f_ == (const __base*)&__f.__buf_)
|
|
{
|
|
__f_ = (__base*)&__buf_;
|
|
__f.__f_->__clone(__f_);
|
|
}
|
|
else
|
|
__f_ = __f.__f_->__clone();
|
|
}
|
|
|
|
template<class _Rp, class _A0>
|
|
template<class _Alloc>
|
|
function<_Rp(_A0)>::function(allocator_arg_t, const _Alloc&, const function& __f)
|
|
{
|
|
if (__f.__f_ == 0)
|
|
__f_ = 0;
|
|
else if (__f.__f_ == (const __base*)&__f.__buf_)
|
|
{
|
|
__f_ = (__base*)&__buf_;
|
|
__f.__f_->__clone(__f_);
|
|
}
|
|
else
|
|
__f_ = __f.__f_->__clone();
|
|
}
|
|
|
|
template<class _Rp, class _A0>
|
|
template <class _Fp>
|
|
function<_Rp(_A0)>::function(_Fp __f,
|
|
typename enable_if<!is_integral<_Fp>::value>::type*)
|
|
: __f_(0)
|
|
{
|
|
if (__function::__not_null(__f))
|
|
{
|
|
typedef __function::__func<_Fp, allocator<_Fp>, _Rp(_A0)> _FF;
|
|
if (sizeof(_FF) <= sizeof(__buf_))
|
|
{
|
|
__f_ = (__base*)&__buf_;
|
|
::new ((void*)__f_) _FF(__f);
|
|
}
|
|
else
|
|
{
|
|
typedef allocator<_FF> _Ap;
|
|
_Ap __a;
|
|
typedef __allocator_destructor<_Ap> _Dp;
|
|
unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));
|
|
::new ((void*)__hold.get()) _FF(__f, allocator<_Fp>(__a));
|
|
__f_ = __hold.release();
|
|
}
|
|
}
|
|
}
|
|
|
|
template<class _Rp, class _A0>
|
|
template <class _Fp, class _Alloc>
|
|
function<_Rp(_A0)>::function(allocator_arg_t, const _Alloc& __a0, _Fp __f,
|
|
typename enable_if<!is_integral<_Fp>::value>::type*)
|
|
: __f_(0)
|
|
{
|
|
typedef allocator_traits<_Alloc> __alloc_traits;
|
|
if (__function::__not_null(__f))
|
|
{
|
|
typedef __function::__func<_Fp, _Alloc, _Rp(_A0)> _FF;
|
|
if (sizeof(_FF) <= sizeof(__buf_))
|
|
{
|
|
__f_ = (__base*)&__buf_;
|
|
::new ((void*)__f_) _FF(__f, __a0);
|
|
}
|
|
else
|
|
{
|
|
typedef typename __rebind_alloc_helper<__alloc_traits, _FF>::type _Ap;
|
|
_Ap __a(__a0);
|
|
typedef __allocator_destructor<_Ap> _Dp;
|
|
unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));
|
|
::new ((void*)__hold.get()) _FF(__f, _Alloc(__a));
|
|
__f_ = __hold.release();
|
|
}
|
|
}
|
|
}
|
|
|
|
template<class _Rp, class _A0>
|
|
function<_Rp(_A0)>&
|
|
function<_Rp(_A0)>::operator=(const function& __f)
|
|
{
|
|
if (__f)
|
|
function(__f).swap(*this);
|
|
else
|
|
*this = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
template<class _Rp, class _A0>
|
|
function<_Rp(_A0)>&
|
|
function<_Rp(_A0)>::operator=(nullptr_t)
|
|
{
|
|
__base* __t = __f_;
|
|
__f_ = 0;
|
|
if (__t == (__base*)&__buf_)
|
|
__t->destroy();
|
|
else if (__t)
|
|
__t->destroy_deallocate();
|
|
return *this;
|
|
}
|
|
|
|
template<class _Rp, class _A0>
|
|
template <class _Fp>
|
|
typename enable_if
|
|
<
|
|
!is_integral<_Fp>::value,
|
|
function<_Rp(_A0)>&
|
|
>::type
|
|
function<_Rp(_A0)>::operator=(_Fp __f)
|
|
{
|
|
function(_VSTD::move(__f)).swap(*this);
|
|
return *this;
|
|
}
|
|
|
|
template<class _Rp, class _A0>
|
|
function<_Rp(_A0)>::~function()
|
|
{
|
|
if (__f_ == (__base*)&__buf_)
|
|
__f_->destroy();
|
|
else if (__f_)
|
|
__f_->destroy_deallocate();
|
|
}
|
|
|
|
template<class _Rp, class _A0>
|
|
void
|
|
function<_Rp(_A0)>::swap(function& __f)
|
|
{
|
|
if (_VSTD::addressof(__f) == this)
|
|
return;
|
|
if (__f_ == (__base*)&__buf_ && __f.__f_ == (__base*)&__f.__buf_)
|
|
{
|
|
typename aligned_storage<sizeof(__buf_)>::type __tempbuf;
|
|
__base* __t = (__base*)&__tempbuf;
|
|
__f_->__clone(__t);
|
|
__f_->destroy();
|
|
__f_ = 0;
|
|
__f.__f_->__clone((__base*)&__buf_);
|
|
__f.__f_->destroy();
|
|
__f.__f_ = 0;
|
|
__f_ = (__base*)&__buf_;
|
|
__t->__clone((__base*)&__f.__buf_);
|
|
__t->destroy();
|
|
__f.__f_ = (__base*)&__f.__buf_;
|
|
}
|
|
else if (__f_ == (__base*)&__buf_)
|
|
{
|
|
__f_->__clone((__base*)&__f.__buf_);
|
|
__f_->destroy();
|
|
__f_ = __f.__f_;
|
|
__f.__f_ = (__base*)&__f.__buf_;
|
|
}
|
|
else if (__f.__f_ == (__base*)&__f.__buf_)
|
|
{
|
|
__f.__f_->__clone((__base*)&__buf_);
|
|
__f.__f_->destroy();
|
|
__f.__f_ = __f_;
|
|
__f_ = (__base*)&__buf_;
|
|
}
|
|
else
|
|
_VSTD::swap(__f_, __f.__f_);
|
|
}
|
|
|
|
template<class _Rp, class _A0>
|
|
_Rp
|
|
function<_Rp(_A0)>::operator()(_A0 __a0) const
|
|
{
|
|
if (__f_ == 0)
|
|
__throw_bad_function_call();
|
|
return (*__f_)(__a0);
|
|
}
|
|
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
|
|
template<class _Rp, class _A0>
|
|
const std::type_info&
|
|
function<_Rp(_A0)>::target_type() const
|
|
{
|
|
if (__f_ == 0)
|
|
return typeid(void);
|
|
return __f_->target_type();
|
|
}
|
|
|
|
template<class _Rp, class _A0>
|
|
template <typename _Tp>
|
|
_Tp*
|
|
function<_Rp(_A0)>::target()
|
|
{
|
|
if (__f_ == 0)
|
|
return (_Tp*)0;
|
|
return (_Tp*) const_cast<void *>(__f_->target(typeid(_Tp)));
|
|
}
|
|
|
|
template<class _Rp, class _A0>
|
|
template <typename _Tp>
|
|
const _Tp*
|
|
function<_Rp(_A0)>::target() const
|
|
{
|
|
if (__f_ == 0)
|
|
return (const _Tp*)0;
|
|
return (const _Tp*)__f_->target(typeid(_Tp));
|
|
}
|
|
|
|
#endif // _LIBCPP_NO_RTTI
|
|
|
|
template<class _Rp, class _A0, class _A1>
|
|
class _LIBCPP_TEMPLATE_VIS function<_Rp(_A0, _A1)>
|
|
: public binary_function<_A0, _A1, _Rp>
|
|
{
|
|
typedef __function::__base<_Rp(_A0, _A1)> __base;
|
|
aligned_storage<3*sizeof(void*)>::type __buf_;
|
|
__base* __f_;
|
|
|
|
public:
|
|
typedef _Rp result_type;
|
|
|
|
// 20.7.16.2.1, construct/copy/destroy:
|
|
_LIBCPP_INLINE_VISIBILITY explicit function() : __f_(0) {}
|
|
_LIBCPP_INLINE_VISIBILITY function(nullptr_t) : __f_(0) {}
|
|
function(const function&);
|
|
template<class _Fp>
|
|
function(_Fp,
|
|
typename enable_if<!is_integral<_Fp>::value>::type* = 0);
|
|
|
|
template<class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
function(allocator_arg_t, const _Alloc&) : __f_(0) {}
|
|
template<class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
function(allocator_arg_t, const _Alloc&, nullptr_t) : __f_(0) {}
|
|
template<class _Alloc>
|
|
function(allocator_arg_t, const _Alloc&, const function&);
|
|
template<class _Fp, class _Alloc>
|
|
function(allocator_arg_t, const _Alloc& __a, _Fp __f,
|
|
typename enable_if<!is_integral<_Fp>::value>::type* = 0);
|
|
|
|
function& operator=(const function&);
|
|
function& operator=(nullptr_t);
|
|
template<class _Fp>
|
|
typename enable_if
|
|
<
|
|
!is_integral<_Fp>::value,
|
|
function&
|
|
>::type
|
|
operator=(_Fp);
|
|
|
|
~function();
|
|
|
|
// 20.7.16.2.2, function modifiers:
|
|
void swap(function&);
|
|
template<class _Fp, class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
void assign(_Fp __f, const _Alloc& __a)
|
|
{function(allocator_arg, __a, __f).swap(*this);}
|
|
|
|
// 20.7.16.2.3, function capacity:
|
|
_LIBCPP_INLINE_VISIBILITY explicit operator bool() const {return __f_;}
|
|
|
|
private:
|
|
// deleted overloads close possible hole in the type system
|
|
template<class _R2, class _B0, class _B1>
|
|
bool operator==(const function<_R2(_B0, _B1)>&) const;// = delete;
|
|
template<class _R2, class _B0, class _B1>
|
|
bool operator!=(const function<_R2(_B0, _B1)>&) const;// = delete;
|
|
public:
|
|
// 20.7.16.2.4, function invocation:
|
|
_Rp operator()(_A0, _A1) const;
|
|
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
// 20.7.16.2.5, function target access:
|
|
const std::type_info& target_type() const;
|
|
template <typename _Tp> _Tp* target();
|
|
template <typename _Tp> const _Tp* target() const;
|
|
#endif // _LIBCPP_NO_RTTI
|
|
};
|
|
|
|
template<class _Rp, class _A0, class _A1>
|
|
function<_Rp(_A0, _A1)>::function(const function& __f)
|
|
{
|
|
if (__f.__f_ == 0)
|
|
__f_ = 0;
|
|
else if (__f.__f_ == (const __base*)&__f.__buf_)
|
|
{
|
|
__f_ = (__base*)&__buf_;
|
|
__f.__f_->__clone(__f_);
|
|
}
|
|
else
|
|
__f_ = __f.__f_->__clone();
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1>
|
|
template<class _Alloc>
|
|
function<_Rp(_A0, _A1)>::function(allocator_arg_t, const _Alloc&, const function& __f)
|
|
{
|
|
if (__f.__f_ == 0)
|
|
__f_ = 0;
|
|
else if (__f.__f_ == (const __base*)&__f.__buf_)
|
|
{
|
|
__f_ = (__base*)&__buf_;
|
|
__f.__f_->__clone(__f_);
|
|
}
|
|
else
|
|
__f_ = __f.__f_->__clone();
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1>
|
|
template <class _Fp>
|
|
function<_Rp(_A0, _A1)>::function(_Fp __f,
|
|
typename enable_if<!is_integral<_Fp>::value>::type*)
|
|
: __f_(0)
|
|
{
|
|
if (__function::__not_null(__f))
|
|
{
|
|
typedef __function::__func<_Fp, allocator<_Fp>, _Rp(_A0, _A1)> _FF;
|
|
if (sizeof(_FF) <= sizeof(__buf_))
|
|
{
|
|
__f_ = (__base*)&__buf_;
|
|
::new ((void*)__f_) _FF(__f);
|
|
}
|
|
else
|
|
{
|
|
typedef allocator<_FF> _Ap;
|
|
_Ap __a;
|
|
typedef __allocator_destructor<_Ap> _Dp;
|
|
unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));
|
|
::new ((void*)__hold.get()) _FF(__f, allocator<_Fp>(__a));
|
|
__f_ = __hold.release();
|
|
}
|
|
}
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1>
|
|
template <class _Fp, class _Alloc>
|
|
function<_Rp(_A0, _A1)>::function(allocator_arg_t, const _Alloc& __a0, _Fp __f,
|
|
typename enable_if<!is_integral<_Fp>::value>::type*)
|
|
: __f_(0)
|
|
{
|
|
typedef allocator_traits<_Alloc> __alloc_traits;
|
|
if (__function::__not_null(__f))
|
|
{
|
|
typedef __function::__func<_Fp, _Alloc, _Rp(_A0, _A1)> _FF;
|
|
if (sizeof(_FF) <= sizeof(__buf_))
|
|
{
|
|
__f_ = (__base*)&__buf_;
|
|
::new ((void*)__f_) _FF(__f, __a0);
|
|
}
|
|
else
|
|
{
|
|
typedef typename __rebind_alloc_helper<__alloc_traits, _FF>::type _Ap;
|
|
_Ap __a(__a0);
|
|
typedef __allocator_destructor<_Ap> _Dp;
|
|
unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));
|
|
::new ((void*)__hold.get()) _FF(__f, _Alloc(__a));
|
|
__f_ = __hold.release();
|
|
}
|
|
}
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1>
|
|
function<_Rp(_A0, _A1)>&
|
|
function<_Rp(_A0, _A1)>::operator=(const function& __f)
|
|
{
|
|
if (__f)
|
|
function(__f).swap(*this);
|
|
else
|
|
*this = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1>
|
|
function<_Rp(_A0, _A1)>&
|
|
function<_Rp(_A0, _A1)>::operator=(nullptr_t)
|
|
{
|
|
__base* __t = __f_;
|
|
__f_ = 0;
|
|
if (__t == (__base*)&__buf_)
|
|
__t->destroy();
|
|
else if (__t)
|
|
__t->destroy_deallocate();
|
|
return *this;
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1>
|
|
template <class _Fp>
|
|
typename enable_if
|
|
<
|
|
!is_integral<_Fp>::value,
|
|
function<_Rp(_A0, _A1)>&
|
|
>::type
|
|
function<_Rp(_A0, _A1)>::operator=(_Fp __f)
|
|
{
|
|
function(_VSTD::move(__f)).swap(*this);
|
|
return *this;
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1>
|
|
function<_Rp(_A0, _A1)>::~function()
|
|
{
|
|
if (__f_ == (__base*)&__buf_)
|
|
__f_->destroy();
|
|
else if (__f_)
|
|
__f_->destroy_deallocate();
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1>
|
|
void
|
|
function<_Rp(_A0, _A1)>::swap(function& __f)
|
|
{
|
|
if (_VSTD::addressof(__f) == this)
|
|
return;
|
|
if (__f_ == (__base*)&__buf_ && __f.__f_ == (__base*)&__f.__buf_)
|
|
{
|
|
typename aligned_storage<sizeof(__buf_)>::type __tempbuf;
|
|
__base* __t = (__base*)&__tempbuf;
|
|
__f_->__clone(__t);
|
|
__f_->destroy();
|
|
__f_ = 0;
|
|
__f.__f_->__clone((__base*)&__buf_);
|
|
__f.__f_->destroy();
|
|
__f.__f_ = 0;
|
|
__f_ = (__base*)&__buf_;
|
|
__t->__clone((__base*)&__f.__buf_);
|
|
__t->destroy();
|
|
__f.__f_ = (__base*)&__f.__buf_;
|
|
}
|
|
else if (__f_ == (__base*)&__buf_)
|
|
{
|
|
__f_->__clone((__base*)&__f.__buf_);
|
|
__f_->destroy();
|
|
__f_ = __f.__f_;
|
|
__f.__f_ = (__base*)&__f.__buf_;
|
|
}
|
|
else if (__f.__f_ == (__base*)&__f.__buf_)
|
|
{
|
|
__f.__f_->__clone((__base*)&__buf_);
|
|
__f.__f_->destroy();
|
|
__f.__f_ = __f_;
|
|
__f_ = (__base*)&__buf_;
|
|
}
|
|
else
|
|
_VSTD::swap(__f_, __f.__f_);
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1>
|
|
_Rp
|
|
function<_Rp(_A0, _A1)>::operator()(_A0 __a0, _A1 __a1) const
|
|
{
|
|
if (__f_ == 0)
|
|
__throw_bad_function_call();
|
|
return (*__f_)(__a0, __a1);
|
|
}
|
|
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
|
|
template<class _Rp, class _A0, class _A1>
|
|
const std::type_info&
|
|
function<_Rp(_A0, _A1)>::target_type() const
|
|
{
|
|
if (__f_ == 0)
|
|
return typeid(void);
|
|
return __f_->target_type();
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1>
|
|
template <typename _Tp>
|
|
_Tp*
|
|
function<_Rp(_A0, _A1)>::target()
|
|
{
|
|
if (__f_ == 0)
|
|
return (_Tp*)0;
|
|
return (_Tp*) const_cast<void *>(__f_->target(typeid(_Tp)));
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1>
|
|
template <typename _Tp>
|
|
const _Tp*
|
|
function<_Rp(_A0, _A1)>::target() const
|
|
{
|
|
if (__f_ == 0)
|
|
return (const _Tp*)0;
|
|
return (const _Tp*)__f_->target(typeid(_Tp));
|
|
}
|
|
|
|
#endif // _LIBCPP_NO_RTTI
|
|
|
|
template<class _Rp, class _A0, class _A1, class _A2>
|
|
class _LIBCPP_TEMPLATE_VIS function<_Rp(_A0, _A1, _A2)>
|
|
{
|
|
typedef __function::__base<_Rp(_A0, _A1, _A2)> __base;
|
|
aligned_storage<3*sizeof(void*)>::type __buf_;
|
|
__base* __f_;
|
|
|
|
public:
|
|
typedef _Rp result_type;
|
|
|
|
// 20.7.16.2.1, construct/copy/destroy:
|
|
_LIBCPP_INLINE_VISIBILITY explicit function() : __f_(0) {}
|
|
_LIBCPP_INLINE_VISIBILITY function(nullptr_t) : __f_(0) {}
|
|
function(const function&);
|
|
template<class _Fp>
|
|
function(_Fp,
|
|
typename enable_if<!is_integral<_Fp>::value>::type* = 0);
|
|
|
|
template<class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
function(allocator_arg_t, const _Alloc&) : __f_(0) {}
|
|
template<class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
function(allocator_arg_t, const _Alloc&, nullptr_t) : __f_(0) {}
|
|
template<class _Alloc>
|
|
function(allocator_arg_t, const _Alloc&, const function&);
|
|
template<class _Fp, class _Alloc>
|
|
function(allocator_arg_t, const _Alloc& __a, _Fp __f,
|
|
typename enable_if<!is_integral<_Fp>::value>::type* = 0);
|
|
|
|
function& operator=(const function&);
|
|
function& operator=(nullptr_t);
|
|
template<class _Fp>
|
|
typename enable_if
|
|
<
|
|
!is_integral<_Fp>::value,
|
|
function&
|
|
>::type
|
|
operator=(_Fp);
|
|
|
|
~function();
|
|
|
|
// 20.7.16.2.2, function modifiers:
|
|
void swap(function&);
|
|
template<class _Fp, class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
void assign(_Fp __f, const _Alloc& __a)
|
|
{function(allocator_arg, __a, __f).swap(*this);}
|
|
|
|
// 20.7.16.2.3, function capacity:
|
|
_LIBCPP_INLINE_VISIBILITY explicit operator bool() const {return __f_;}
|
|
|
|
private:
|
|
// deleted overloads close possible hole in the type system
|
|
template<class _R2, class _B0, class _B1, class _B2>
|
|
bool operator==(const function<_R2(_B0, _B1, _B2)>&) const;// = delete;
|
|
template<class _R2, class _B0, class _B1, class _B2>
|
|
bool operator!=(const function<_R2(_B0, _B1, _B2)>&) const;// = delete;
|
|
public:
|
|
// 20.7.16.2.4, function invocation:
|
|
_Rp operator()(_A0, _A1, _A2) const;
|
|
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
// 20.7.16.2.5, function target access:
|
|
const std::type_info& target_type() const;
|
|
template <typename _Tp> _Tp* target();
|
|
template <typename _Tp> const _Tp* target() const;
|
|
#endif // _LIBCPP_NO_RTTI
|
|
};
|
|
|
|
template<class _Rp, class _A0, class _A1, class _A2>
|
|
function<_Rp(_A0, _A1, _A2)>::function(const function& __f)
|
|
{
|
|
if (__f.__f_ == 0)
|
|
__f_ = 0;
|
|
else if (__f.__f_ == (const __base*)&__f.__buf_)
|
|
{
|
|
__f_ = (__base*)&__buf_;
|
|
__f.__f_->__clone(__f_);
|
|
}
|
|
else
|
|
__f_ = __f.__f_->__clone();
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1, class _A2>
|
|
template<class _Alloc>
|
|
function<_Rp(_A0, _A1, _A2)>::function(allocator_arg_t, const _Alloc&,
|
|
const function& __f)
|
|
{
|
|
if (__f.__f_ == 0)
|
|
__f_ = 0;
|
|
else if (__f.__f_ == (const __base*)&__f.__buf_)
|
|
{
|
|
__f_ = (__base*)&__buf_;
|
|
__f.__f_->__clone(__f_);
|
|
}
|
|
else
|
|
__f_ = __f.__f_->__clone();
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1, class _A2>
|
|
template <class _Fp>
|
|
function<_Rp(_A0, _A1, _A2)>::function(_Fp __f,
|
|
typename enable_if<!is_integral<_Fp>::value>::type*)
|
|
: __f_(0)
|
|
{
|
|
if (__function::__not_null(__f))
|
|
{
|
|
typedef __function::__func<_Fp, allocator<_Fp>, _Rp(_A0, _A1, _A2)> _FF;
|
|
if (sizeof(_FF) <= sizeof(__buf_))
|
|
{
|
|
__f_ = (__base*)&__buf_;
|
|
::new ((void*)__f_) _FF(__f);
|
|
}
|
|
else
|
|
{
|
|
typedef allocator<_FF> _Ap;
|
|
_Ap __a;
|
|
typedef __allocator_destructor<_Ap> _Dp;
|
|
unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));
|
|
::new ((void*)__hold.get()) _FF(__f, allocator<_Fp>(__a));
|
|
__f_ = __hold.release();
|
|
}
|
|
}
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1, class _A2>
|
|
template <class _Fp, class _Alloc>
|
|
function<_Rp(_A0, _A1, _A2)>::function(allocator_arg_t, const _Alloc& __a0, _Fp __f,
|
|
typename enable_if<!is_integral<_Fp>::value>::type*)
|
|
: __f_(0)
|
|
{
|
|
typedef allocator_traits<_Alloc> __alloc_traits;
|
|
if (__function::__not_null(__f))
|
|
{
|
|
typedef __function::__func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)> _FF;
|
|
if (sizeof(_FF) <= sizeof(__buf_))
|
|
{
|
|
__f_ = (__base*)&__buf_;
|
|
::new ((void*)__f_) _FF(__f, __a0);
|
|
}
|
|
else
|
|
{
|
|
typedef typename __rebind_alloc_helper<__alloc_traits, _FF>::type _Ap;
|
|
_Ap __a(__a0);
|
|
typedef __allocator_destructor<_Ap> _Dp;
|
|
unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));
|
|
::new ((void*)__hold.get()) _FF(__f, _Alloc(__a));
|
|
__f_ = __hold.release();
|
|
}
|
|
}
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1, class _A2>
|
|
function<_Rp(_A0, _A1, _A2)>&
|
|
function<_Rp(_A0, _A1, _A2)>::operator=(const function& __f)
|
|
{
|
|
if (__f)
|
|
function(__f).swap(*this);
|
|
else
|
|
*this = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1, class _A2>
|
|
function<_Rp(_A0, _A1, _A2)>&
|
|
function<_Rp(_A0, _A1, _A2)>::operator=(nullptr_t)
|
|
{
|
|
__base* __t = __f_;
|
|
__f_ = 0;
|
|
if (__t == (__base*)&__buf_)
|
|
__t->destroy();
|
|
else if (__t)
|
|
__t->destroy_deallocate();
|
|
return *this;
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1, class _A2>
|
|
template <class _Fp>
|
|
typename enable_if
|
|
<
|
|
!is_integral<_Fp>::value,
|
|
function<_Rp(_A0, _A1, _A2)>&
|
|
>::type
|
|
function<_Rp(_A0, _A1, _A2)>::operator=(_Fp __f)
|
|
{
|
|
function(_VSTD::move(__f)).swap(*this);
|
|
return *this;
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1, class _A2>
|
|
function<_Rp(_A0, _A1, _A2)>::~function()
|
|
{
|
|
if (__f_ == (__base*)&__buf_)
|
|
__f_->destroy();
|
|
else if (__f_)
|
|
__f_->destroy_deallocate();
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1, class _A2>
|
|
void
|
|
function<_Rp(_A0, _A1, _A2)>::swap(function& __f)
|
|
{
|
|
if (_VSTD::addressof(__f) == this)
|
|
return;
|
|
if (__f_ == (__base*)&__buf_ && __f.__f_ == (__base*)&__f.__buf_)
|
|
{
|
|
typename aligned_storage<sizeof(__buf_)>::type __tempbuf;
|
|
__base* __t = (__base*)&__tempbuf;
|
|
__f_->__clone(__t);
|
|
__f_->destroy();
|
|
__f_ = 0;
|
|
__f.__f_->__clone((__base*)&__buf_);
|
|
__f.__f_->destroy();
|
|
__f.__f_ = 0;
|
|
__f_ = (__base*)&__buf_;
|
|
__t->__clone((__base*)&__f.__buf_);
|
|
__t->destroy();
|
|
__f.__f_ = (__base*)&__f.__buf_;
|
|
}
|
|
else if (__f_ == (__base*)&__buf_)
|
|
{
|
|
__f_->__clone((__base*)&__f.__buf_);
|
|
__f_->destroy();
|
|
__f_ = __f.__f_;
|
|
__f.__f_ = (__base*)&__f.__buf_;
|
|
}
|
|
else if (__f.__f_ == (__base*)&__f.__buf_)
|
|
{
|
|
__f.__f_->__clone((__base*)&__buf_);
|
|
__f.__f_->destroy();
|
|
__f.__f_ = __f_;
|
|
__f_ = (__base*)&__buf_;
|
|
}
|
|
else
|
|
_VSTD::swap(__f_, __f.__f_);
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1, class _A2>
|
|
_Rp
|
|
function<_Rp(_A0, _A1, _A2)>::operator()(_A0 __a0, _A1 __a1, _A2 __a2) const
|
|
{
|
|
if (__f_ == 0)
|
|
__throw_bad_function_call();
|
|
return (*__f_)(__a0, __a1, __a2);
|
|
}
|
|
|
|
#ifndef _LIBCPP_NO_RTTI
|
|
|
|
template<class _Rp, class _A0, class _A1, class _A2>
|
|
const std::type_info&
|
|
function<_Rp(_A0, _A1, _A2)>::target_type() const
|
|
{
|
|
if (__f_ == 0)
|
|
return typeid(void);
|
|
return __f_->target_type();
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1, class _A2>
|
|
template <typename _Tp>
|
|
_Tp*
|
|
function<_Rp(_A0, _A1, _A2)>::target()
|
|
{
|
|
if (__f_ == 0)
|
|
return (_Tp*)0;
|
|
return (_Tp*) const_cast<void *>(__f_->target(typeid(_Tp)));
|
|
}
|
|
|
|
template<class _Rp, class _A0, class _A1, class _A2>
|
|
template <typename _Tp>
|
|
const _Tp*
|
|
function<_Rp(_A0, _A1, _A2)>::target() const
|
|
{
|
|
if (__f_ == 0)
|
|
return (const _Tp*)0;
|
|
return (const _Tp*)__f_->target(typeid(_Tp));
|
|
}
|
|
|
|
#endif // _LIBCPP_NO_RTTI
|
|
|
|
template <class _Fp>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
bool
|
|
operator==(const function<_Fp>& __f, nullptr_t) {return !__f;}
|
|
|
|
template <class _Fp>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
bool
|
|
operator==(nullptr_t, const function<_Fp>& __f) {return !__f;}
|
|
|
|
template <class _Fp>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
bool
|
|
operator!=(const function<_Fp>& __f, nullptr_t) {return (bool)__f;}
|
|
|
|
template <class _Fp>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
bool
|
|
operator!=(nullptr_t, const function<_Fp>& __f) {return (bool)__f;}
|
|
|
|
template <class _Fp>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
void
|
|
swap(function<_Fp>& __x, function<_Fp>& __y)
|
|
{return __x.swap(__y);}
|
|
|
|
#endif
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
#endif // _LIBCPP___FUNCTIONAL_FUNCTION_H
|