vcl: replace boost::shared_array with std::shared_ptr

Add o3tl::make_shared_array() to create the shared_ptr with the right
deleter.

The main difference then is that shared_array has operator[], but this
code didn't even use it.

Change-Id: I500ffc2f92b99c2a3924c0cdcdaa101956b69add

1 files changed, 33 insertions, 0 deletions

diff --git a/include/o3tl/make_shared.hxx b/include/o3tl/make_shared.hxx
new file mode 100644
index 000000000000..d42783c301fa
--- /dev/null
+++ b/include/o3tl/make_shared.hxx
@@ -0,0 +1,33 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INCLUDED_O3TL_MAKE_SHARED_HXX
+#define INCLUDED_O3TL_MAKE_SHARED_HXX
+
+#include <memory>
+#include <type_traits>
+
+namespace o3tl {
+
+/** Allocate an array stored in a shared_ptr, calling operator delete[].
+    Note that this is only allowed for arithmetic types because shared_ptr
+    implicitly converts to sub-types.
+ */
+template<typename T>
+std::shared_ptr<T> make_shared_array(size_t const size)
+{
+    static_assert(std::is_arithmetic<T>::value, "only arrays of arithmetic types allowed");
+    return std::shared_ptr<T>(new T[size], std::default_delete<T[]>());
+}
+
+} // namespace o3tl
+
+#endif // INCLUDED_O3TL_MAKE_SHARED_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */