Use std::unique_ptr.

TBR=reed@google.com

Committed: https://skia.googlesource.com/skia/+/20c1e3abfc681771f73eb19fde7284196e028940

Committed: https://skia.googlesource.com/skia/+/3dd9ed37c24611af86f0fe374bd3698b63f09450
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1780933003

Review URL: https://codereview.chromium.org/1780933003

3 files changed, 12 insertions, 420 deletions

diff --git a/include/private/SkOncePtr.h b/include/private/SkOncePtr.h
index 261f9a7ef4..3c1ab634ee 100644
--- a/include/private/SkOncePtr.h
+++ b/include/private/SkOncePtr.h
@@ -9,7 +9,7 @@
 #define SkOncePtr_DEFINED
 
 #include "../private/SkAtomics.h"
-#include "SkUniquePtr.h"
+#include <memory>
 
 template <typename T> class SkBaseOncePtr;
 
@@ -17,7 +17,7 @@ template <typename T> class SkBaseOncePtr;
 #define SK_DECLARE_STATIC_ONCE_PTR(type, name) namespace {} static SkBaseOncePtr<type> name;
 
 // Use this for a local or member pointer that's initialized exactly once when you call get().
-template <typename T, typename Delete = skstd::default_delete<T>>
+template <typename T, typename Delete = std::default_delete<T>>
 class SkOncePtr : SkNoncopyable {
 public:
     SkOncePtr() { sk_bzero(this, sizeof(*this)); }
@@ -42,7 +42,7 @@ private:
 
 // If you ask for SkOncePtr<T[]>, we'll clean up with delete[] by default.
 template <typename T>
-class SkOncePtr<T[]> : public SkOncePtr<T, skstd::default_delete<T[]>> {};
+class SkOncePtr<T[]> : public SkOncePtr<T, std::default_delete<T[]>> {};
 
 /* TODO(mtklein): in next CL
 typedef SkBaseOncePtr<void> SkOnceFlag;
diff --git a/include/private/SkTemplates.h b/include/private/SkTemplates.h
index e36910e814..e74f512623 100644
--- a/include/private/SkTemplates.h
+++ b/include/private/SkTemplates.h
@@ -13,8 +13,8 @@
 #include "SkMath.h"
 #include "SkTLogic.h"
 #include "SkTypes.h"
-#include "SkUniquePtr.h"
 #include <limits.h>
+#include <memory>
 #include <new>
 
 /** \file SkTemplates.h
@@ -58,9 +58,9 @@ template <typename R, typename T, R (*P)(T*)> struct SkFunctionWrapper {
     function.
 */
 template <typename T, void (*P)(T*)> class SkAutoTCallVProc
-    : public skstd::unique_ptr<T, SkFunctionWrapper<void, T, P>> {
+    : public std::unique_ptr<T, SkFunctionWrapper<void, T, P>> {
 public:
-    SkAutoTCallVProc(T* obj): skstd::unique_ptr<T, SkFunctionWrapper<void, T, P>>(obj) {}
+    SkAutoTCallVProc(T* obj): std::unique_ptr<T, SkFunctionWrapper<void, T, P>>(obj) {}
 
     operator T*() const { return this->get(); }
     T* detach() { return this->release(); }
@@ -75,9 +75,9 @@ reference is null when the destructor is called, we do not call the
 function.
 */
 template <typename T, int (*P)(T*)> class SkAutoTCallIProc
-    : public skstd::unique_ptr<T, SkFunctionWrapper<int, T, P>> {
+    : public std::unique_ptr<T, SkFunctionWrapper<int, T, P>> {
 public:
-    SkAutoTCallIProc(T* obj): skstd::unique_ptr<T, SkFunctionWrapper<int, T, P>>(obj) {}
+    SkAutoTCallIProc(T* obj): std::unique_ptr<T, SkFunctionWrapper<int, T, P>>(obj) {}
 
     operator T*() const { return this->get(); }
     T* detach() { return this->release(); }
@@ -93,18 +93,18 @@ public:
 
   The size of a SkAutoTDelete is small: sizeof(SkAutoTDelete<T>) == sizeof(T*)
 */
-template <typename T> class SkAutoTDelete : public skstd::unique_ptr<T> {
+template <typename T> class SkAutoTDelete : public std::unique_ptr<T> {
 public:
-    SkAutoTDelete(T* obj = NULL) : skstd::unique_ptr<T>(obj) {}
+    SkAutoTDelete(T* obj = NULL) : std::unique_ptr<T>(obj) {}
 
     operator T*() const { return this->get(); }
     void free() { this->reset(nullptr); }
     T* detach() { return this->release(); }
 };
 
-template <typename T> class SkAutoTDeleteArray : public skstd::unique_ptr<T[]> {
+template <typename T> class SkAutoTDeleteArray : public std::unique_ptr<T[]> {
 public:
-    SkAutoTDeleteArray(T array[]) : skstd::unique_ptr<T[]>(array) {}
+    SkAutoTDeleteArray(T array[]) : std::unique_ptr<T[]>(array) {}
 
     void free() { this->reset(nullptr); }
     T* detach() { return this->release(); }
diff --git a/include/private/SkUniquePtr.h b/include/private/SkUniquePtr.h
deleted file mode 100644
index b1097d51eb..0000000000
--- a/include/private/SkUniquePtr.h
+++ /dev/null
@@ -1,408 +0,0 @@
-/*
- * 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 <cstddef>
-#include <utility>
-
-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>
-    struct compressed_base : private B {
-        /*constexpr*/ compressed_base() : B() {}
-        /*constexpr*/ compressed_base(const B& b) : B(b) {}
-        /*constexpr*/ compressed_base(B&& b) : B(std::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(B&& b) : fb(std::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); }
-    };
-
-    // C++14 adds '&& !std::is_final<deleter_type>::value' to the bool condition.
-    // compressed_base_t exists and has this form to work around a bug in vs2013sp2-3
-    using compressed_base_t = compressed_base<deleter_type, std::is_empty<deleter_type>::value>;
-
-    struct compressed_data : private compressed_base_t {
-        pointer fPtr;
-        /*constexpr*/ compressed_data() : compressed_base_t(), fPtr() {}
-        /*constexpr*/ compressed_data(const pointer& ptr, const deleter_type& d)
-            : compressed_base_t(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_t(std::forward<U2>(d)), fPtr(std::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_t::get();
-        }
-        /*constexpr*/ deleter_type const& getDeleter() const /*noexcept*/ {
-            return compressed_base_t::get();
-        }
-        void swap(compressed_data& that) /*noexcept*/ {
-            compressed_base_t::swap(static_cast<compressed_base_t>(that));
-            SkTSwap(fPtr, that.fPtr);
-        }
-    };
-    compressed_data data;
-
-public:
-    /*constexpr*/ unique_ptr() /*noexcept*/ : data() {
-        static_assert(!std::is_pointer<deleter_type>::value, "Deleter nullptr function pointer!");
-    }
-
-    /*constexpr*/ unique_ptr(std::nullptr_t) /*noexcept*/ : unique_ptr() { }
-
-    explicit unique_ptr(pointer ptr) /*noexcept*/ : data(ptr, deleter_type()) {
-        static_assert(!std::is_pointer<deleter_type>::value, "Deleter nullptr function pointer!");
-    }
-
-    unique_ptr(pointer ptr,
-               conditional_t<std::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(std::move(ptr), std::move(d))
-    {
-        static_assert(!std::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(), std::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 &&
-        !std::is_array<U>::value &&
-        conditional_t<std::is_reference<D>::value,
-                      std::is_same<ThatD, D>,
-                      is_convertible<ThatD, D>>::value>>
-    unique_ptr(unique_ptr<U, ThatD>&& that) /*noexcept*/
-        : data(that.release(), std::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() = std::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 &&
-        !std::is_array<U>::value,
-    unique_ptr&> operator=(unique_ptr<U, ThatD>&& that) /*noexcept*/ {
-        reset(that.release());
-        get_deleter() = std::forward<ThatD>(that.get_deleter());
-        return *this;
-    }
-
-    unique_ptr& operator=(std::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> struct compressed_base : private B {
-        /*constexpr*/ compressed_base() : B() {}
-        /*constexpr*/ compressed_base(const B& b) : B(b) {}
-        /*constexpr*/ compressed_base(B&& b) : B(std::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(B&& b) : fb(std::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); }
-    };
-
-    // C++14 adds '&& !std::is_final<deleter_type>::value' to the bool condition.
-    // compressed_base_t exists and has this form to work around a bug in vs2013sp2-3
-    using compressed_base_t = compressed_base<deleter_type, std::is_empty<deleter_type>::value>;
-
-    struct compressed_data : private compressed_base_t {
-        pointer fPtr;
-        /*constexpr*/ compressed_data() : compressed_base_t(), fPtr() {}
-        /*constexpr*/ compressed_data(const pointer& ptr, const deleter_type& d)
-            : compressed_base_t(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_t(std::forward<U2>(d)), fPtr(std::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_t::get();
-        }
-        /*constexpr*/ deleter_type const& getDeleter() const /*noexcept*/ {
-            return compressed_base_t::get();
-        }
-        void swap(compressed_data& that) /*noexcept*/ {
-            compressed_base_t::swap(static_cast<compressed_base_t>(that));
-            SkTSwap(fPtr, that.fPtr);
-        }
-    };
-    compressed_data data;
-
-public:
-    /*constexpr*/ unique_ptr() /*noexcept*/ : data() {
-        static_assert(!std::is_pointer<deleter_type>::value, "Deleter nullptr function pointer!");
-    }
-
-    /*constexpr*/ unique_ptr(std::nullptr_t) /*noexcept*/ : unique_ptr() { }
-
-    explicit unique_ptr(pointer ptr) /*noexcept*/ : data(ptr, deleter_type()) {
-        static_assert(!std::is_pointer<deleter_type>::value, "Deleter nullptr function pointer!");
-    }
-
-    unique_ptr(pointer ptr,
-               conditional_t<std::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(std::move(ptr), std::move(d))
-    {
-        static_assert(!std::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(), std::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() = std::forward<deleter_type>(that.get_deleter());
-        return *this;
-    }
-
-    unique_ptr& operator=(std::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, std::nullptr_t) /*noexcept*/ {
-    //return !a;
-    return !a.is_attached();
-}
-
-template <typename T, typename D>
-inline bool operator==(std::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, std::nullptr_t) /*noexcept*/ {
-    //return (bool)a;
-    return a.is_attached();
-}
-
-template <typename T, typename D>
-inline bool operator!=(std::nullptr_t, const unique_ptr<T, D>& b) /*noexcept*/ {
-    //return (bool)b;
-    return b.is_attached();
-}
-
-}  // namespace skstd
-
-#endif