meta_object.h
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00001 /*
00002  * Copyright (c) 2012, Willow Garage, Inc.
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions are met:
00007  *
00008  *     * Redistributions of source code must retain the above copyright
00009  *       notice, this list of conditions and the following disclaimer.
00010  *     * Redistributions in binary form must reproduce the above copyright
00011  *       notice, this list of conditions and the following disclaimer in the
00012  *       documentation and/or other materials provided with the distribution.
00013  *     * Neither the name of the Willow Garage, Inc. nor the names of its
00014  *       contributors may be used to endorse or promote products derived from
00015  *       this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00018  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
00021  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00022  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
00023  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00024  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00025  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00026  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00027  * POSSIBILITY OF SUCH DAMAGE.
00028  */
00029 
00030 // Note: This header defines a simplication of Poco::MetaObject
00031 // that allows us to tag MetaObjects with an associated library name.
00032 
00033 #ifndef CLASS_LOADER__META_OBJECT_H_
00034 #define CLASS_LOADER__META_OBJECT_H_
00035 
00036 #include <console_bridge/console.h>
00037 #include <typeinfo>
00038 #include <string>
00039 #include <vector>
00040 
00041 #include "class_loader/console_bridge_compatibility.h"
00042 
00043 namespace class_loader
00044 {
00045 
00046 class ClassLoader;  // Forward declaration
00047 
00048 namespace class_loader_private
00049 {
00050 
00051 typedef std::vector<class_loader::ClassLoader *> ClassLoaderVector;
00052 
00057 class AbstractMetaObjectBase
00058 {
00059 public:
00063   AbstractMetaObjectBase(const std::string & class_name, const std::string & base_class_name);
00069   ~AbstractMetaObjectBase();
00070 
00075   std::string className() const;
00076 
00080   std::string baseClassName() const;
00084   std::string typeidBaseClassName() const;
00085 
00090   std::string getAssociatedLibraryPath();
00091 
00095   void setAssociatedLibraryPath(std::string library_path);
00096 
00101   void addOwningClassLoader(ClassLoader * loader);
00102 
00107   void removeOwningClassLoader(const ClassLoader * loader);
00108 
00113   bool isOwnedBy(const ClassLoader * loader);
00114 
00118   bool isOwnedByAnybody();
00119 
00123   ClassLoaderVector getAssociatedClassLoaders();
00124 
00125 protected:
00129   virtual void dummyMethod() {}
00130 
00131 protected:
00132   ClassLoaderVector associated_class_loaders_;
00133   std::string associated_library_path_;
00134   std::string base_class_name_;
00135   std::string class_name_;
00136   std::string typeid_base_class_name_;
00137 };
00138 
00144 template<class B>
00145 class AbstractMetaObject : public AbstractMetaObjectBase
00146 {
00147 public:
00152   AbstractMetaObject(const std::string & class_name, const std::string & base_class_name)
00153   : AbstractMetaObjectBase(class_name, base_class_name)
00154   {
00155     AbstractMetaObjectBase::typeid_base_class_name_ = std::string(typeid(B).name());
00156   }
00157 
00162   virtual B * create() const = 0;
00165 
00166 private:
00167   AbstractMetaObject();
00168   AbstractMetaObject(const AbstractMetaObject &);
00169   AbstractMetaObject & operator=(const AbstractMetaObject &);
00170 };
00171 
00178 template<class C, class B>
00179 class MetaObject : public AbstractMetaObject<B>
00180 {
00181 public:
00185   MetaObject(const std::string & class_name, const std::string & base_class_name)
00186   : AbstractMetaObject<B>(class_name, base_class_name)
00187   {
00188   }
00189 
00194   B * create() const
00195   {
00196     return new C;
00197   }
00198 };
00199 
00200 }  // namespace class_loader_private
00201 }  // namespace class_loader
00202 
00203 #endif  // CLASS_LOADER__META_OBJECT_H_


class_loader
Author(s): Mirza Shah
autogenerated on Thu Dec 7 2017 04:48:01