# Visualization Library

A lightweight C++ OpenGL middleware for 2D/3D graphics

[Home] [Tutorials] [All Classes] [Grouped Classes]

- Main Page
- Related Pages
- Namespaces
- Classes
- Files

- File List
- File Members

# D:/VL/BuildSystem/VL_DISTRO/Visualization_Library_SDK/src/vlCore/VLXVisitorLinker.hpp

Go to the documentation of this file.

    00001 /**************************************************************************************/
    00002 /*                                                                                    */
    00003 /*  Visualization Library                                                             */
    00004 /*  http://www.visualizationlibrary.org                                               */
    00005 /*                                                                                    */
    00006 /*  Copyright (c) 2005-2010, Michele Bosi                                             */
    00007 /*  All rights reserved.                                                              */
    00008 /*                                                                                    */
    00009 /*  Redistribution and use in source and binary forms, with or without modification,  */
    00010 /*  are permitted provided that the following conditions are met:                     */
    00011 /*                                                                                    */
    00012 /*  - Redistributions of source code must retain the above copyright notice, this     */
    00013 /*  list of conditions and the following disclaimer.                                  */
    00014 /*                                                                                    */
    00015 /*  - Redistributions in binary form must reproduce the above copyright notice, this  */
    00016 /*  list of conditions and the following disclaimer in the documentation and/or       */
    00017 /*  other materials provided with the distribution.                                   */
    00018 /*                                                                                    */
    00019 /*  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND   */
    00020 /*  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED     */
    00021 /*  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE            */
    00022 /*  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR  */
    00023 /*  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES    */
    00024 /*  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;      */
    00025 /*  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON    */
    00026 /*  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT           */
    00027 /*  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS     */
    00028 /*  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.                      */
    00029 /*                                                                                    */
    00030 /**************************************************************************************/
    00031
    00032 #ifndef VLXVisitorLinker_INCLUDE_ONCE
    00033 #define VLXVisitorLinker_INCLUDE_ONCE
    00034
    00035 #include <vlCore/VLXVisitor.hpp>
    00036 #include <vlCore/VLXValue.hpp>
    00037
    00038 namespace vl
    00039 {
    00041   class VLXVisitorLinker: public VLXVisitor
    00042   {
    00043     VL_INSTRUMENT_CLASS(vl::VLXVisitorLinker, VLXVisitor)
    00044
    00045   public:
    00046     typedef enum
    00047     {
    00048       NoError,
    00049       UnresolvedID
    00050     } EError;
    00051
    00052   public:
    00053     VLXVisitorLinker(const std::map< std::string, ref<VLXStructure> >* map=NULL)
    00054     {
    00055       mLinkMap = map;
    00056       mError = NoError;
    00057     }
    00058
    00059     void setLinkMap(const std::map< std::string, ref<VLXStructure> >* map)
    00060     {
    00061       mLinkMap = map;
    00062     }
    00063
    00064     VLXStructure* link(const std::string& uid)
    00065     {
    00066       VL_CHECK(mLinkMap)
    00067       VL_CHECK(!uid.empty())
    00068       std::map< std::string, ref<VLXStructure> >::const_iterator it = mLinkMap->find(uid);
    00069       if( it != mLinkMap->end() )
    00070       {
    00071         // this should never happen
    00072         VL_CHECK(uid != "#NULL")
    00073
    00074         /* Log::debug( Say("- ID '%s' linked to '%s'.\n") << uid << it->second->tag() ); */
    00075         return it->second.get_writable();
    00076       }
    00077       else
    00078       {
    00079         if (uid != "#NULL")
    00080         {
    00081           mError = UnresolvedID;
    00082           Log::error( Say("Could not link ID '%s' to anything!\n") << uid );
    00083         }
    00084         return NULL;
    00085       }
    00086     }
    00087
    00088     virtual void visitStructure(VLXStructure* obj)
    00089     {
    00090       if (isVisited(obj))
    00091         return;
    00092
    00093       for(size_t i=0; i<obj->value().size(); ++i)
    00094       {
    00095         if (obj->value()[i].value().type() == VLXValue::Structure)
    00096           obj->value()[i].value().getStructure()->acceptVisitor(this);
    00097         else
    00098         if (obj->value()[i].value().type() == VLXValue::List)
    00099           obj->value()[i].value().getList()->acceptVisitor(this);
    00100         else
    00101         /*
    00102         if (obj->value()[i].value().type() == VLXValue::ArrayID)
    00103           obj->value()[i].value().getArrayID()->acceptVisitor(this);
    00104         else
    00105         */
    00106         if (obj->value()[i].value().type() == VLXValue::ID)
    00107         {
    00108           // transform ID -> Structure
    00109           VLXStructure* lnk_obj = link( obj->value()[i].value().getID() );
    00110           obj->value()[i].value().setStructure( lnk_obj );
    00111         }
    00112       }
    00113     }
    00114
    00115     virtual void visitList(VLXList* list)
    00116     {
    00117       // this should happen only if the user manually creates loops
    00118       if (isVisited(list))
    00119       {
    00120         Log::warning("VLXVisitorLinker: cycle detected on VLXList.\n");
    00121         return;
    00122       }
    00123
    00124       for(size_t i=0; i<list->value().size(); ++i)
    00125       {
    00126         if (list->value()[i].type() == VLXValue::Structure)
    00127           list->value()[i].getStructure()->acceptVisitor(this);
    00128         if (list->value()[i].type() == VLXValue::List)
    00129           list->value()[i].getList()->acceptVisitor(this);
    00130         else
    00131         /*
    00132         if (list->value()[i].type() == VLXValue::ArrayID)
    00133           list->value()[i].getArrayID()->acceptVisitor(this);
    00134         else
    00135         */
    00136         if (list->value()[i].type() == VLXValue::ID)
    00137         {
    00138           // transform ID -> Structure
    00139           VLXStructure* lnk_obj = link( list->value()[i].getID() );
    00140           list->value()[i].setStructure( lnk_obj );
    00141         }
    00142       }
    00143     }
    00144
    00145     /*
    00146     virtual void visitArray(VLXArrayString*)  {}
    00147
    00148     virtual void visitArray(VLXArrayID* arr)
    00149     {
    00150       // retrieves the assigned Structure
    00151       for(size_t i=0 ;i<arr->value().size(); ++i)
    00152         arr->value()[i].setStructure ( link(arr->value()[i].uid()) );
    00153     }
    00154
    00155     virtual void visitArray(VLXArrayIdentifier*) {}
    00156     */
    00157
    00158     virtual void visitArray(VLXArrayInteger*)  {}
    00159
    00160     virtual void visitArray(VLXArrayReal*)  {}
    00161
    00162     EError error() const { return mError; }
    00163
    00164     void setError(EError err) { mError = err; }
    00165
    00166   private:
    00167     const std::map< std::string, ref<VLXStructure> >* mLinkMap;
    00168     EError mError;
    00169   };
    00170 }
    00171
    00172 #endif

Visualization Library v2011.09.1162 Reference Documentation
Copyright 2005-2011 Michele Bosi. All rights reserved.
Updated on Thu Jan 26 2012 00:43:33.
Permission is granted to use this page to write and publish articles regarding Visualization Library.