Imported and modified some sources from Boost (http://www.boost.org)

git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@3734 212acab6-be3b-0410-9dea-997c60f758d6

Source/boost/scoped_array.hpp

@@ -0,0 +1,122 @@
+#ifndef BOOST_SCOPED_ARRAY_HPP_INCLUDED
+#define BOOST_SCOPED_ARRAY_HPP_INCLUDED
+
+//  (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
+//  Copyright (c) 2001, 2002 Peter Dimov
+//
+//  Permission to copy, use, modify, sell and distribute this software
+//  is granted provided this copyright notice appears in all copies.
+//  This software is provided "as is" without express or implied
+//  warranty, and with no claim as to its suitability for any purpose.
+//
+//  http://www.boost.org/libs/smart_ptr/scoped_array.htm
+//
+
+
+// From Boost 1.31.0, http://www.boost.org
+// Modified by Ori Peleg for use in NSIS, to reduce the required Boost includes
+
+#include "checked_delete.hpp"
+#include "detail/workaround.hpp"
+
+#include <cstddef>            // for std::ptrdiff_t
+
+namespace boost
+{
+
+//  scoped_array extends scoped_ptr to arrays. Deletion of the array pointed to
+//  is guaranteed, either on destruction of the scoped_array or via an explicit
+//  reset(). Use shared_array or std::vector if your needs are more complex.
+
+template<class T> class scoped_array // noncopyable
+{
+private:
+
+    T * ptr;
+
+    scoped_array(scoped_array const &);
+    scoped_array & operator=(scoped_array const &);
+
+    typedef scoped_array<T> this_type;
+
+public:
+
+    typedef T element_type;
+
+    explicit scoped_array(T * p = 0) : ptr(p) // never throws
+    {
+    }
+
+    ~scoped_array() // never throws
+    {
+        boost::checked_array_delete(ptr);
+    }
+
+    void reset(T * p = 0) // never throws
+    {
+        assert(p == 0 || p != ptr); // catch self-reset errors
+        this_type(p).swap(*this);
+    }
+
+    T & operator[](std::ptrdiff_t i) const // never throws
+    {
+        assert(ptr != 0);
+        assert(i >= 0);
+        return ptr[i];
+    }
+
+    T * get() const // never throws
+    {
+        return ptr;
+    }
+
+    // implicit conversion to "bool"
+
+#if defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, <= 0x530)
+
+    operator bool () const
+    {
+        return ptr != 0;
+    }
+
+#elif defined(__MWERKS__) && BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003))
+    typedef T * (this_type::*unspecified_bool_type)() const;
+    
+    operator unspecified_bool_type() const // never throws
+    {
+        return ptr == 0? 0: &this_type::get;
+    }
+
+#else 
+
+    typedef T * this_type::*unspecified_bool_type;
+
+    operator unspecified_bool_type() const // never throws
+    {
+        return ptr == 0? 0: &this_type::ptr;
+    }
+
+#endif
+
+    bool operator! () const // never throws
+    {
+        return ptr == 0;
+    }
+
+    void swap(scoped_array & b) // never throws
+    {
+        T * tmp = b.ptr;
+        b.ptr = ptr;
+        ptr = tmp;
+    }
+
+};
+
+template<class T> inline void swap(scoped_array<T> & a, scoped_array<T> & b) // never throws
+{
+    a.swap(b);
+}
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SCOPED_ARRAY_HPP_INCLUDED