Source Format Enforcement (#763)

[thirdparty/squid.git] / src / Generic.h

diff --git a/src/Generic.h b/src/Generic.h
index fd5e15e78f3f2bf7d4574a6573f3f4307ddce8c2..dd4150c2f4d99078d1f90b7a769bb8de34e762b5 100644 (file)
--- a/src/Generic.h
+++ b/src/Generic.h
@@ -1,43 +1,20 @@
-
 /*
- * $Id: Generic.h,v 1.4 2003/02/21 22:50:05 robertc Exp $
- *
- *
- * SQUID Web Proxy Cache          http://www.squid-cache.org/
- * ----------------------------------------------------------
- *
- *  Squid is the result of efforts by numerous individuals from
- *  the Internet community; see the CONTRIBUTORS file for full
- *  details.   Many organizations have provided support for Squid's
- *  development; see the SPONSORS file for full details.  Squid is
- *  Copyrighted (C) 2001 by the Regents of the University of
- *  California; see the COPYRIGHT file for full details.  Squid
- *  incorporates software developed and/or copyrighted by other
- *  sources; see the CREDITS file for full details.
- *
- *  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., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
+ * Copyright (C) 1996-2021 The Squid Software Foundation and contributors
  *
+ * Squid software is distributed under GPLv2+ license and includes
+ * contributions from numerous individuals and organizations.
+ * Please see the COPYING and CONTRIBUTORS files for details.
  */
 
 #ifndef SQUID_GENERIC_H
 #define SQUID_GENERIC_H
 
-template <class _Arg, class _Result>
+#include "dlink.h"
 
-struct unary_function
-{
+#include <ostream>
+
+template <class _Arg, class _Result>
+struct unary_function {
     typedef _Arg argument_type;
     typedef _Result result_type;
 };
@@ -51,7 +28,6 @@ T& for_each(L const &head, T& visitor)
     return visitor;
 }
 
-
 template <class T>
 T& for_each(dlink_list const &collection, T& visitor)
 {
@@ -61,4 +37,61 @@ T& for_each(dlink_list const &collection, T& visitor)
     return visitor;
 }
 
+/* RBC 20030718 - use this to provide instance expecting classes a pointer to a
+ * singleton
+ */
+
+template <class C>
+class InstanceToSingletonAdapter : public C
+{
+
+public:
+    void *operator new (size_t byteCount) { return ::operator new (byteCount);}
+
+    void operator delete (void *address) { ::operator delete (address);}
+
+    InstanceToSingletonAdapter(C const *instance) : theInstance (instance) {}
+
+    C const * operator-> () const {return theInstance; }
+
+    C * operator-> () {return const_cast<C *>(theInstance); }
+
+    C const & operator * () const {return *theInstance; }
+
+    C & operator * () {return *const_cast<C *>(theInstance); }
+
+    operator C const * () const {return theInstance;}
+
+    operator C *() {return const_cast<C *>(theInstance);}
+
+private:
+    C const *theInstance;
+};
+
+template <class InputIterator, class Visitor>
+Visitor& for_each(InputIterator from, InputIterator to, Visitor& visitor)
+{
+    while (!(from == to)) {
+        typename InputIterator::value_type &value = *from;
+        ++from;
+        visitor(value);
+    }
+
+    return visitor;
+}
+
+/* generic ostream printer */
+template <class Pointer>
+struct PointerPrinter {
+    PointerPrinter(std::ostream &astream, std::string aDelimiter) : os(astream), delimiter (aDelimiter) {}
+
+    void operator () (Pointer aNode) {
+        os << *aNode << delimiter;
+    }
+
+    std::ostream &os;
+    std::string delimiter;
+};
+
 #endif /* SQUID_GENERIC_H */
+