New directory tree, with preprocessor/ inside interpretor/.

[Faustine.git] / interpretor / preprocessor / faust-0.9.47mr3 / compiler / headers / smartpointer.hh

diff --git a/interpretor/preprocessor/faust-0.9.47mr3/compiler/headers/smartpointer.hh b/interpretor/preprocessor/faust-0.9.47mr3/compiler/headers/smartpointer.hh
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+++ b/interpretor/preprocessor/faust-0.9.47mr3/compiler/headers/smartpointer.hh
@@ -0,0 +1,74 @@
+/************************************************************************
+ ************************************************************************
+    FAUST compiler
+       Copyright (C) 2003-2004 GRAME, Centre National de Creation Musicale
+    ---------------------------------------------------------------------
+    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 2 of the License, or
+    (at your option) 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, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ ************************************************************************
+ ************************************************************************/
+ 
+ 
+ 
+#ifndef _SMARTPOINTER_H
+#define _SMARTPOINTER_H
+
+//#include <iostream>
+#include <cstdlib>
+#include <cstdio>
+
+
+
+template<class T>
+class P {
+       private:
+               T* p;
+       public:
+               P()     : p(0)                                                  { }
+               P(T* rawptr) : p(rawptr)                        { }
+               P(const P& ptr) : p((T*)ptr)            { }
+
+               template<class T2> 
+               P(const P<T2>& ptr) : p((T*)ptr)        { }
+               
+               ~P()                                                            { }
+               
+               operator T*() const                                     { return p;     }
+               T& operator*() const {
+                       if (p == 0) {
+                               //throw std::runtime_error("Null dereference in P<?>::operator*() const ");
+                               fprintf(stderr, "Null dereference in P<?>::operator*() const \n ");
+                               exit(1);
+                       }
+                       return *p;
+               }
+               T* operator->() const   { 
+                       if (p == 0) {
+                               fprintf(stderr, "Null dereference in P<?>::operator->() const \n ");
+                               //throw std::runtime_error("Null dereference in P<?>::operator->() const ");
+                               //std::cerr << "Null dereference in P<?>::operator->() const " << std::endl;
+                               exit(1);
+                       }
+                       return p;
+               }
+               T* pointee() const      { return p;}
+               P& operator=(T* p_)     { p = p_;  return *this;}
+               
+               P& operator=(const P<T>& p_)            { return operator=((T *) p_); }
+               template<class T2> P& cast(T2* p_)      { return operator=(dynamic_cast<T*>(p_)); }
+               template<class T2> P& cast(const P<T2>& p_) { return operator=(dynamic_cast<T*>(p_)); }
+};
+
+
+#endif