DosBox: keep own smart pointer

Because of MSVC that doesn't gives the proper value for __cplusplus without of the `/Zc:__cplusplus` argument,
make just use of hand-made pointer to allow users to build library's code easier

1 files changed, 110 insertions, 0 deletions

diff --git a/src/chips/common/ptr.hpp b/src/chips/common/ptr.hpp
new file mode 100644
index 0000000..af37a67
--- /dev/null
+++ b/src/chips/common/ptr.hpp
@@ -0,0 +1,110 @@
+/*
+ * libADLMIDI is a free Software MIDI synthesizer library with OPL3 emulation
+ *
+ * Original ADLMIDI code: Copyright (c) 2010-2014 Joel Yliluoma <bisqwit@iki.fi>
+ * ADLMIDI Library API:   Copyright (c) 2015-2020 Vitaly Novichkov <admin@wohlnet.ru>
+ *
+ * Library is based on the ADLMIDI, a MIDI player for Linux and Windows with OPL3 emulation:
+ * http://iki.fi/bisqwit/source/adlmidi.html
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef MY_PTR_HPP_THING
+#define MY_PTR_HPP_THING
+
+#include <stddef.h>
+#include <stdlib.h>
+
+/*
+  Generic deleters for smart pointers
+ */
+template <class T>
+struct My_DefaultDelete
+{
+    void operator()(T *x) { delete x; }
+};
+
+template <class T>
+struct My_DefaultArrayDelete
+{
+    void operator()(T *x) { delete[] x; }
+};
+
+struct My_CDelete
+{
+    void operator()(void *x) { free(x); }
+};
+
+/*
+    Safe unique pointer for C++98, non-copyable but swappable.
+*/
+template< class T, class Deleter = My_DefaultDelete<T> >
+class My_UPtr
+{
+    T *m_p;
+public:
+    explicit My_UPtr(T *p = NULL)
+        : m_p(p) {}
+    ~My_UPtr()
+    {
+        reset();
+    }
+
+    void reset(T *p = NULL)
+    {
+        if(p != m_p)
+        {
+            if(m_p)
+            {
+                Deleter del;
+                del(m_p);
+            }
+            m_p = p;
+        }
+    }
+
+    T *get() const
+    {
+        return m_p;
+    }
+
+    T *release()
+    {
+        T *ret = m_p;
+        m_p = NULL;
+        return ret;
+    }
+
+    T &operator*() const
+    {
+        return *m_p;
+    }
+
+    T *operator->() const
+    {
+        return m_p;
+    }
+
+    T &operator[](size_t index) const
+    {
+        return m_p[index];
+    }
+
+private:
+    My_UPtr(const My_UPtr &);
+    My_UPtr &operator=(const My_UPtr &);
+};
+
+#endif // MY_PTR_HPP_THING