add Visitor example

git-svn-id: svn://svn.code.sf.net/p/loki-lib/code/trunk@395 7ec92016-0320-0410-acc4-a06ded1c099a

test/Visitor/main.cpp

@@ -0,0 +1,79 @@
+////////////////////////////////////////////////////////////////////////////////
+// The Loki Library
+// Copyright (c) 2006 Peter Kümmel
+// Permission to use, copy, modify, distribute and sell this software for any 
+//     purpose is hereby granted without fee, provided that the above copyright 
+//     notice appear in all copies and that both that copyright notice and this 
+//     permission notice appear in supporting documentation.
+// The author makes no representations about the 
+//     suitability of this software for any purpose. It is provided "as is" 
+//     without express or implied warranty.
+////////////////////////////////////////////////////////////////////////////////
+
+// $Header:
+
+#include <loki/Visitor.h>
+#include <iostream>
+
+
+class Base : public Loki::BaseVisitable<>
+{
+public:
+	LOKI_DEFINE_VISITABLE()
+};
+
+class Type1 : public Base
+{
+public:
+	LOKI_DEFINE_VISITABLE()
+};
+
+class VariableVisitor : 
+	public Loki::BaseVisitor, 
+	//public Loki::Visitor<Base>,
+	//public Loki::Visitor<Type1>
+	public Loki::Visitor<LOKI_TYPELIST_2(Base,Type1)>
+	//public Loki::Visitor<Loki::Seq<Base,Type1>::Type>
+{ 
+public: 
+	void Visit(Base&){std::cout << "void Visit(Base&)\n";}
+	void Visit(Type1&){std::cout << "void Visit(Type1&)\n";}
+}; 
+
+
+class CBase : public Loki::BaseVisitable<void, Loki::DefaultCatchAll, true>
+{
+public:
+	LOKI_DEFINE_CONST_VISITABLE()
+};
+
+class CType1 : public CBase
+{
+public:
+	LOKI_DEFINE_CONST_VISITABLE()
+};
+
+class CVariableVisitor : 
+	public Loki::BaseVisitor, 
+	//public Loki::Visitor<CBase,void,true>,
+	//public Loki::Visitor<CType1,void,true>
+	public Loki::Visitor<LOKI_TYPELIST_2(CBase,CType1),void,true>
+	//public Loki::Visitor<Loki::Seq<CBase,CType1>::Type,void,true>
+{ 
+public: 
+	void Visit(const CBase&){std::cout << "void Visit(CBase&)\n";}
+	void Visit(const CType1&){std::cout << "void Visit(CType1&)\n";}
+}; 
+
+int main()
+{
+	VariableVisitor visitor;
+	Type1 type1;
+	Base* dyn = &type1;
+	dyn->Accept(visitor);
+
+	CVariableVisitor cvisitor;
+	CType1 ctype1;
+	CBase* cdyn = &ctype1;
+	cdyn->Accept(cvisitor);
+}

test/Visitor/make.msvc.bat

@@ -0,0 +1,6 @@
+if not exist tmp\ mkdir tmp
+
+cl -c -Zm200 -O2 -DNDEBUG -MT -EHsc -GR -W0 -wd4710 -I"." -I"..\..\include" -Fotmp\ main.cpp 
+
+link /NOLOGO /SUBSYSTEM:CONSOLE /incremental:no /OUT:"main-msvc.exe" ..\..\lib\loki.lib tmp\main.obj
+