+++ /dev/null
-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef SkUniquePtr_DEFINED
-#define SkUniquePtr_DEFINED
-
-#include "SkTLogic.h"
-#include "SkUtility.h"
-
-namespace skstd {
-
-template <typename T> struct default_delete {
- /*constexpr*/ default_delete() /*noexcept*/ = default;
-
- template <typename U, typename = enable_if_t<is_convertible<U*, T*>::value>>
- default_delete(const default_delete<U>&) /*noexcept*/ {}
-
- void operator()(T* obj) const {
- static_assert(sizeof(T) > 0, "Deleting pointer to incomplete type!");
- delete obj;
- }
-};
-template <typename T> struct default_delete<T[]> {
- /*constexpr*/ default_delete() /*noexcept*/ = default;
-
- void operator()(T* obj) const {
- static_assert(sizeof(T) > 0, "Deleting pointer to incomplete type!");
- delete [] obj;
- }
-};
-
-template <typename T, typename D = default_delete<T>> class unique_ptr {
- // remove_reference_t<D>::pointer if that type exists, otherwise T*.
- struct pointer_type_detector {
- template <typename U> static typename U::pointer detector(typename U::pointer*);
- template <typename U> static T* detector(...);
- using type = decltype(detector<remove_reference_t<D>>(0));
- };
-
-public:
- using pointer = typename pointer_type_detector::type;
- using element_type = T;
- using deleter_type = D;
-
-private:
- template <typename B, bool = is_empty<B>::value /*&& !is_final<B>::value*/>
- struct compressed_base : private B {
- /*constexpr*/ compressed_base() : B() {}
- /*constexpr*/ compressed_base(const B& b) : B(b) {}
- /*constexpr*/ compressed_base(const B&& b) : B(move(b)) {}
- /*constexpr*/ B& get() /*noexcept*/ { return *this; }
- /*constexpr*/ B const& get() const /*noexcept*/ { return *this; }
- void swap(compressed_base&) /*noexcept*/ { }
- };
-
- template <typename B> struct compressed_base<B, false> {
- B fb;
- /*constexpr*/ compressed_base() : B() {}
- /*constexpr*/ compressed_base(const B& b) : fb(b) {}
- /*constexpr*/ compressed_base(const B&& b) : fb(move(b)) {}
- /*constexpr*/ B& get() /*noexcept*/ { return fb; }
- /*constexpr*/ B const& get() const /*noexcept*/ { return fb; }
- void swap(compressed_base& that) /*noexcept*/ { SkTSwap(fb, that.fB); }
- };
-
- struct compressed_data : private compressed_base<deleter_type> {
- pointer fPtr;
- /*constexpr*/ compressed_data() : compressed_base<deleter_type>(), fPtr() {}
- /*constexpr*/ compressed_data(const pointer& ptr, const deleter_type& d)
- : compressed_base<deleter_type>(d), fPtr(ptr) {}
- template <typename U1, typename U2, typename = enable_if_t<
- is_convertible<U1, pointer>::value && is_convertible<U2, deleter_type>::value
- >> /*constexpr*/ compressed_data(U1&& ptr, U2&& d)
- : compressed_base<deleter_type>(skstd::forward<U2>(d)), fPtr(skstd::forward<U1>(ptr)) {}
- /*constexpr*/ pointer& getPointer() /*noexcept*/ { return fPtr; }
- /*constexpr*/ pointer const& getPointer() const /*noexcept*/ { return fPtr; }
- /*constexpr*/ deleter_type& getDeleter() /*noexcept*/ {
- return compressed_base<deleter_type>::get();
- }
- /*constexpr*/ deleter_type const& getDeleter() const /*noexcept*/ {
- return compressed_base<deleter_type>::get();
- }
- void swap(compressed_data& that) /*noexcept*/ {
- compressed_base<deleter_type>::swap(static_cast<compressed_base<deleter_type>>(that));
- SkTSwap(fPtr, that.fPtr);
- }
- };
- compressed_data data;
-
-public:
- /*constexpr*/ unique_ptr() /*noexcept*/ : data() {
- static_assert(!is_pointer<deleter_type>::value, "Deleter is nullptr function pointer!");
- }
-
- /*constexpr*/ unique_ptr(skstd::nullptr_t) /*noexcept*/ : unique_ptr() { }
-
- explicit unique_ptr(pointer ptr) /*noexcept*/ : data(ptr, deleter_type()) {
- static_assert(!is_pointer<deleter_type>::value, "Deleter is nullptr function pointer!");
- }
-
- unique_ptr(pointer ptr,
- conditional_t<is_reference<deleter_type>::value, deleter_type,const deleter_type&> d)
- /*noexcept*/ : data(ptr, d)
- {}
-
- unique_ptr(pointer ptr, remove_reference_t<deleter_type>&& d) /*noexcept*/
- : data(move(ptr), move(d))
- {
- static_assert(!is_reference<deleter_type>::value,
- "Binding an rvalue reference deleter as an lvalue reference deleter is not allowed.");
- }
-
-
- unique_ptr(unique_ptr&& that) /*noexcept*/
- : data(that.release(), forward<deleter_type>(that.get_deleter()))
- {}
-
- template <typename U, typename ThatD, typename = enable_if_t<
- is_convertible<typename unique_ptr<U, ThatD>::pointer, pointer>::value &&
- !is_array<U>::value &&
- conditional_t<is_reference<D>::value, is_same<ThatD, D>, is_convertible<ThatD, D>>::value>>
- unique_ptr(unique_ptr<U, ThatD>&& that) /*noexcept*/
- : data(that.release(), forward<ThatD>(that.get_deleter()))
- {}
-
- ~unique_ptr() /*noexcept*/ {
- pointer& ptr = data.getPointer();
- if (ptr != nullptr) {
- get_deleter()(ptr);
- }
- ptr = pointer();
- }
-
- unique_ptr& operator=(unique_ptr&& that) /*noexcept*/ {
- reset(that.release());
- get_deleter() = forward<deleter_type>(that.get_deleter());
- return *this;
- }
-
- template <typename U, typename ThatD> enable_if_t<
- is_convertible<typename unique_ptr<U, ThatD>::pointer, pointer>::value &&
- !is_array<U>::value,
- unique_ptr&> operator=(unique_ptr<U, ThatD>&& that) /*noexcept*/ {
- reset(that.release());
- get_deleter() = forward<ThatD>(that.get_deleter());
- return *this;
- }
-
- unique_ptr& operator=(skstd::nullptr_t) /*noexcept*/ {
- reset();
- return *this;
- }
-
- add_lvalue_reference_t<element_type> operator*() const {
- SkASSERT(get() != pointer());
- return *get();
- }
-
- pointer operator->() const /*noexcept*/ {
- SkASSERT(get() != pointer());
- return get();
- }
-
- pointer get() const /*noexcept*/ {
- return data.getPointer();
- }
-
- deleter_type& get_deleter() /*noexcept*/ {
- return data.getDeleter();
- }
-
- const deleter_type& get_deleter() const /*noexcept*/ {
- return data.getDeleter();
- }
-
- //explicit operator bool() const noexcept {
- bool is_attached() const /*noexcept*/ {
- return get() == pointer() ? false : true;
- }
-
- pointer release() /*noexcept*/ {
- pointer ptr = get();
- data.getPointer() = pointer();
- return ptr;
- }
-
- void reset(pointer ptr = pointer()) /*noexcept*/ {
- SkTSwap(data.getPointer(), ptr);
- if (ptr != pointer()) {
- get_deleter()(ptr);
- }
- }
-
- void swap(unique_ptr& that) /*noexcept*/ {
- SkTSwap(data, that.data);
- }
-
- unique_ptr(const unique_ptr&) = delete;
- unique_ptr& operator=(const unique_ptr&) = delete;
-};
-
-template <typename T, typename D> class unique_ptr<T[], D> {
- // remove_reference_t<D>::pointer if that type exists, otherwise T*.
- struct pointer_type_detector {
- template <typename U> static typename U::pointer detector(typename U::pointer*);
- template <typename U> static T* detector(...);
- using type = decltype(detector<remove_reference_t<D>>(0));
- };
-
-public:
- using pointer = typename pointer_type_detector::type;
- using element_type = T;
- using deleter_type = D;
-
-private:
- template <typename B, bool = is_empty<B>::value /*&& !is_final<B>::value*/>
- struct compressed_base : private B {
- /*constexpr*/ compressed_base() : B() {}
- /*constexpr*/ compressed_base(const B& b) : B(b) {}
- /*constexpr*/ compressed_base(const B&& b) : B(move(b)) {}
- /*constexpr*/ B& get() /*noexcept*/ { return *this; }
- /*constexpr*/ B const& get() const /*noexcept*/ { return *this; }
- void swap(compressed_base&) /*noexcept*/ { }
- };
-
- template <typename B> struct compressed_base<B, false> {
- B fb;
- /*constexpr*/ compressed_base() : B() {}
- /*constexpr*/ compressed_base(const B& b) : fb(b) {}
- /*constexpr*/ compressed_base(const B&& b) : fb(move(b)) {}
- /*constexpr*/ B& get() /*noexcept*/ { return fb; }
- /*constexpr*/ B const& get() const /*noexcept*/ { return fb; }
- void swap(compressed_base& that) /*noexcept*/ { SkTSwap(fb, that.fB); }
- };
-
- struct compressed_data : private compressed_base<deleter_type> {
- pointer fPtr;
- /*constexpr*/ compressed_data() : compressed_base<deleter_type>(), fPtr() {}
- /*constexpr*/ compressed_data(const pointer& ptr, const deleter_type& d)
- : compressed_base<deleter_type>(d), fPtr(ptr) {}
- template <typename U1, typename U2, typename = enable_if_t<
- is_convertible<U1, pointer>::value && is_convertible<U2, deleter_type>::value
- >> /*constexpr*/ compressed_data(U1&& ptr, U2&& d)
- : compressed_base<deleter_type>(skstd::forward<U2>(d)), fPtr(skstd::forward<U1>(ptr)) {}
- /*constexpr*/ pointer& getPointer() /*noexcept*/ { return fPtr; }
- /*constexpr*/ pointer const& getPointer() const /*noexcept*/ { return fPtr; }
- /*constexpr*/ deleter_type& getDeleter() /*noexcept*/ {
- return compressed_base<deleter_type>::get();
- }
- /*constexpr*/ deleter_type const& getDeleter() const /*noexcept*/ {
- return compressed_base<deleter_type>::get();
- }
- void swap(compressed_data& that) /*noexcept*/ {
- compressed_base<deleter_type>::swap(static_cast<compressed_base<deleter_type>>(that));
- SkTSwap(fPtr, that.fPtr);
- }
- };
- compressed_data data;
-
-public:
- /*constexpr*/ unique_ptr() /*noexcept*/ : data() {
- static_assert(!is_pointer<deleter_type>::value, "Deleter is nullptr function pointer!");
- }
-
- /*constexpr*/ unique_ptr(skstd::nullptr_t) /*noexcept*/ : unique_ptr() { }
-
- explicit unique_ptr(pointer ptr) /*noexcept*/ : data(ptr, deleter_type()) {
- static_assert(!is_pointer<deleter_type>::value, "Deleter is nullptr function pointer!");
- }
-
- unique_ptr(pointer ptr,
- conditional_t<is_reference<deleter_type>::value, deleter_type,const deleter_type&> d)
- /*noexcept*/ : data(ptr, d)
- {}
-
- unique_ptr(pointer ptr, remove_reference_t<deleter_type>&& d) /*noexcept*/
- : data(move(ptr), move(d))
- {
- static_assert(!is_reference<deleter_type>::value,
- "Binding an rvalue reference deleter as an lvalue reference deleter is not allowed.");
- }
-
- unique_ptr(unique_ptr&& that) /*noexcept*/
- : data(that.release(), forward<deleter_type>(that.get_deleter()))
- {}
-
- ~unique_ptr() {
- pointer& ptr = data.getPointer();
- if (ptr != nullptr) {
- get_deleter()(ptr);
- }
- ptr = pointer();
- }
-
- unique_ptr& operator=(unique_ptr&& that) /*noexcept*/ {
- reset(that.release());
- get_deleter() = forward<deleter_type>(that.get_deleter());
- return *this;
- }
-
- unique_ptr& operator=(skstd::nullptr_t) /*noexcept*/ {
- reset();
- return *this;
- }
-
- add_lvalue_reference_t<element_type> operator[](size_t i) const {
- SkASSERT(get() != pointer());
- return get()[i];
- }
-
- pointer get() const /*noexcept*/ {
- return data.getPointer();
- }
-
- deleter_type& get_deleter() /*noexcept*/ {
- return data.getDeleter();
- }
-
- const deleter_type& get_deleter() const /*noexcept*/ {
- return data.getDeleter();
- }
-
- //explicit operator bool() const noexcept {
- bool is_attached() const /*noexcept*/ {
- return get() == pointer() ? false : true;
- }
-
- pointer release() /*noexcept*/ {
- pointer ptr = get();
- data.getPointer() = pointer();
- return ptr;
- }
-
- void reset(pointer ptr = pointer()) /*noexcept*/ {
- SkTSwap(data.getPointer(), ptr);
- if (ptr != pointer()) {
- get_deleter()(ptr);
- }
- }
-
- template <typename U> void reset(U*) = delete;
-
- void swap(unique_ptr& that) /*noexcept*/ {
- data.swap(that.data);
- }
-
- unique_ptr(const unique_ptr&) = delete;
- unique_ptr& operator=(const unique_ptr&) = delete;
-};
-
-template <typename T, typename D>
-inline void swap(unique_ptr<T, D>& a, unique_ptr<T, D>& b) /*noexcept*/ {
- a.swap(b);
-}
-
-template <typename T, typename D, typename U, typename ThatD>
-inline bool operator==(const unique_ptr<T, D>& a, const unique_ptr<U, ThatD>& b) {
- return a.get() == b.get();
-}
-
-template <typename T, typename D>
-inline bool operator==(const unique_ptr<T, D>& a, skstd::nullptr_t) /*noexcept*/ {
- //return !a;
- return !a.is_attached();
-}
-
-template <typename T, typename D>
-inline bool operator==(skstd::nullptr_t, const unique_ptr<T, D>& b) /*noexcept*/ {
- //return !b;
- return !b.is_attached();
-}
-
-template <typename T, typename D, typename U, typename ThatD>
-inline bool operator!=(const unique_ptr<T, D>& a, const unique_ptr<U, ThatD>& b) {
- return a.get() != b.get();
-}
-
-template <typename T, typename D>
-inline bool operator!=(const unique_ptr<T, D>& a, skstd::nullptr_t) /*noexcept*/ {
- //return (bool)a;
- return a.is_attached();
-}
-
-template <typename T, typename D>
-inline bool operator!=(skstd::nullptr_t, const unique_ptr<T, D>& b) /*noexcept*/ {
- //return (bool)b;
- return b.is_attached();
-}
-
-} // namespace skstd
-
-#endif
Moveable src1; Moveable dst1(skstd::move(src1));
Moveable src2, dst2; dst2 = skstd::move(src2);
}
-
-#define TOO_BIG "The unique_ptr was bigger than expected."
-#define WEIRD_SIZE "The unique_ptr was a different size than expected."
-
-DEF_TEST(CPlusPlusEleven_UniquePtr, r) {
- struct SmallUniquePtr {
- Moveable* p;
- };
- struct BigUniquePtr {
- void(*d)(Moveable*);
- Moveable* p;
- };
-
- static_assert(sizeof(skstd::unique_ptr<Moveable>) == sizeof(SmallUniquePtr), TOO_BIG);
- static_assert(sizeof(skstd::unique_ptr<Moveable[]>) == sizeof(SmallUniquePtr), TOO_BIG);
-
- using proc = void(*)(Moveable*);
- static_assert(sizeof(skstd::unique_ptr<Moveable, proc>) == sizeof(BigUniquePtr), WEIRD_SIZE);
- static_assert(sizeof(skstd::unique_ptr<Moveable[], proc>) == sizeof(BigUniquePtr), WEIRD_SIZE);
-
- {
- skstd::unique_ptr<Moveable, void(*)(Moveable*)> u(nullptr, deleter<Moveable>);
- static_assert(sizeof(u) == sizeof(BigUniquePtr), WEIRD_SIZE);
-
- auto u2 = skstd::move(u);
- static_assert(sizeof(u2) == sizeof(BigUniquePtr), WEIRD_SIZE);
- }
-
- {
- skstd::unique_ptr<Moveable, void(*)(Moveable*)> u(nullptr, [](Moveable* m){ deleter(m); });
- static_assert(sizeof(u) == sizeof(BigUniquePtr), WEIRD_SIZE);
-
- auto u2 = skstd::move(u);
- static_assert(sizeof(u2) == sizeof(BigUniquePtr), WEIRD_SIZE);
- }
-
- {
- auto d = [](Moveable* m){ deleter(m); };
- skstd::unique_ptr<Moveable, decltype(d)> u(nullptr, d);
- static_assert(sizeof(u) == sizeof(SmallUniquePtr), TOO_BIG);
-
- auto u2 = skstd::move(u);
- static_assert(sizeof(u2) == sizeof(SmallUniquePtr), TOO_BIG);
- }
-
- {
- skstd::unique_ptr<Moveable, Deleter<Moveable>> u(nullptr, Deleter<Moveable>());
- static_assert(sizeof(u) == sizeof(SmallUniquePtr), TOO_BIG);
-
- auto u2 = skstd::move(u);
- static_assert(sizeof(u2) == sizeof(SmallUniquePtr), TOO_BIG);
- }
-
- {
- skstd::unique_ptr<Moveable, Deleter<Moveable>> u(new Moveable(), Deleter<Moveable>());
- static_assert(sizeof(u) == sizeof(SmallUniquePtr), TOO_BIG);
-
- auto u2 = skstd::move(u);
- static_assert(sizeof(u2) == sizeof(SmallUniquePtr), TOO_BIG);
- }
-
- {
- skstd::unique_ptr<const void, Deleter<const void>> u(new Moveable(), Deleter<const void>());
- static_assert(sizeof(u) == sizeof(SmallUniquePtr), TOO_BIG);
-
- auto u2 = skstd::move(u);
- static_assert(sizeof(u2) == sizeof(SmallUniquePtr), TOO_BIG);
- }
-}
projects / platform / upstream / libSkiaSharp.git / commitdiff