Issue #4692 - Rewrite `SetTimeout` facility to avoid `JsValuePtr` and `JsValueList`

src/AllocatedArray.h

+/*
+ * This file is part of Adblock Plus <https://adblockplus.org/>,
+ * Copyright (C) 2006-2016 Eyeo GmbH
+ *
+ * Adblock Plus is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * Adblock Plus is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#if !defined(ALLOCATED_ARRAY_H)
+#define ALLOCATED_ARRAY_H
+
+template<class T>
+class AllocatedArray
+{
+  size_t size;
+  std::unique_ptr<T[]> p;
+
+  /**
+   * Copy constructor deleted. Allocation is unique to single object.
+   */
+  AllocatedArray<T>(const AllocatedArray<T>&); // = delete
+  /**
+   * Copy assignment deleted. Allocation is unique to single object.
+   */
+  AllocatedArray<T>& operator=(const AllocatedArray<T>&); // = delete
+
+public:
+  /**
+   * Default constructor. No allocation.
+   */
+  AllocatedArray()
+    : size(0),
+    p()
+  {}
+
+  /**
+   * Length constructor.
+   * Initializes each element with default constructor of T().
+   * Does no allocation if `n` is zero.
+   */
+  AllocatedArray(size_t n)
+    : size(n), 
+    p(n > 0 ? new T[n] : nullptr) // TODO: make_unique once available
+  {}
+
+  AllocatedArray<T>(AllocatedArray<T>&& x) // = default;
+  {
+    size = x.size;
+    std::swap(p, x.p);
+  }
+
+  AllocatedArray<T>& operator=(AllocatedArray<T>&& x) // = default;
+  {
+    size = x.size;
+    std::swap(p, x.p);
+    return *this;
+  }
+
+  T& operator[](size_t i) const
+  {
+    return p.get()[i];
+  }
+
+  T* Get() const
+  {
+    return p.get();
+  }
+
+  void Reset()
+  {
+    size = 0;
+    p.reset();
+  }
+
+  size_t Size() const
+  {
+    return size;
+  }
+};
+
+#endif