1 files changed, 137 insertions, 0 deletions
diff --git a/current/sources/android/support/src/UniquePtr.h b/current/sources/android/support/src/UniquePtr.h
new file mode 100644
index 000000000..06f14aa1d
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+++ b/current/sources/android/support/src/UniquePtr.h
@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#pragma once
+
+namespace {
+
+#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
+  TypeName(const TypeName&) = delete;      \
+  void operator=(const TypeName&) = delete
+
+template <typename T>
+struct DefaultDelete {
+  enum { type_must_be_complete = sizeof(T) };
+  DefaultDelete() {
+  }
+  void operator()(T* p) const {
+    delete p;
+  }
+};
+
+template <typename T>
+struct DefaultDelete<T[]> {
+  enum { type_must_be_complete = sizeof(T) };
+  void operator()(T* p) const {
+    delete[] p;
+  }
+};
+
+template <typename T, typename D = DefaultDelete<T> >
+class UniquePtr {
+ public:
+  explicit UniquePtr(T* ptr = NULL) : mPtr(ptr) {
+  }
+
+  ~UniquePtr() {
+    reset();
+  }
+
+  T& operator*() const {
+    return *mPtr;
+  }
+  T* operator->() const {
+    return mPtr;
+  }
+  T* get() const {
+    return mPtr;
+  }
+
+  T* release() __attribute__((warn_unused_result)) {
+    T* result = mPtr;
+    mPtr = NULL;
+    return result;
+  }
+
+  void reset(T* ptr = NULL) {
+    if (ptr != mPtr) {
+      D()(mPtr);
+      mPtr = ptr;
+    }
+  }
+
+ private:
+  T* mPtr;
+
+  template <typename T2>
+  bool operator==(const UniquePtr<T2>& p) const;
+  template <typename T2>
+  bool operator!=(const UniquePtr<T2>& p) const;
+
+  DISALLOW_COPY_AND_ASSIGN(UniquePtr);
+};
+
+// Partial specialization for array types. Like std::unique_ptr, this removes
+// operator* and operator-> but adds operator[].
+template <typename T, typename D>
+class UniquePtr<T[], D> {
+ public:
+  explicit UniquePtr(T* ptr = NULL) : mPtr(ptr) {
+  }
+
+  ~UniquePtr() {
+    reset();
+  }
+
+  T& operator[](size_t i) const {
+    return mPtr[i];
+  }
+  T* get() const {
+    return mPtr;
+  }
+
+  T* release() __attribute__((warn_unused_result)) {
+    T* result = mPtr;
+    mPtr = NULL;
+    return result;
+  }
+
+  void reset(T* ptr = NULL) {
+    if (ptr != mPtr) {
+      D()(mPtr);
+      mPtr = ptr;
+    }
+  }
+
+ private:
+  T* mPtr;
+
+  DISALLOW_COPY_AND_ASSIGN(UniquePtr);
+};
+
+} // anonymous namespace