[790] | 1 | /* |
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| 2 | * ORXONOX - the hottest 3D action shooter ever to exist |
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[1505] | 3 | * > www.orxonox.net < |
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[790] | 4 | * |
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| 5 | * |
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| 6 | * License notice: |
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| 7 | * |
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| 8 | * This program is free software; you can redistribute it and/or |
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| 9 | * modify it under the terms of the GNU General Public License |
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| 10 | * as published by the Free Software Foundation; either version 2 |
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| 11 | * of the License, or (at your option) any later version. |
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| 12 | * |
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| 13 | * This program is distributed in the hope that it will be useful, |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 16 | * GNU General Public License for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU General Public License |
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| 19 | * along with this program; if not, write to the Free Software |
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| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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| 21 | * |
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| 22 | * Author: |
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| 23 | * Fabian 'x3n' Landau |
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| 24 | * Co-authors: |
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| 25 | * ... |
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| 26 | * |
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| 27 | */ |
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| 28 | |
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[871] | 29 | /** |
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[7401] | 30 | @defgroup Identifier Identifier |
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| 31 | @ingroup Class |
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| 32 | */ |
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| 33 | |
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| 34 | /** |
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[2171] | 35 | @file |
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[7401] | 36 | @ingroup Class Identifier |
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| 37 | @brief Declaration of Identifier, definition of ClassIdentifier<T>; used to identify the class of an object. |
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[790] | 38 | |
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[7401] | 39 | @anchor IdentifierExample |
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[790] | 40 | |
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[7401] | 41 | An Identifier "identifies" the class of an object. It contains different information about |
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| 42 | the class: Its name and ID, a list of all instances of this class, a factory to create new |
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| 43 | instances of this class, and more. |
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[790] | 44 | |
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[7401] | 45 | It also contains information about the inheritance of this class: It stores a list of the |
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| 46 | Identifiers of all parent-classes as well as a list of all child-classes. These relationships |
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| 47 | can be tested using functions like @c isA(), @c isChildOf(), @c isParentOf(), and more. |
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[790] | 48 | |
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[7401] | 49 | Every Identifier is in fact a ClassIdentifier<T> (where T is the class that is identified |
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| 50 | by the Identifier), Identifier is just the common base-class. |
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| 51 | |
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| 52 | Example: |
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| 53 | @code |
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| 54 | MyClass* object = new MyClass(); // create an instance of MyClass |
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| 55 | |
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| 56 | object->getIdentifier()->getName(); // returns "MyClass" |
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| 57 | |
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[11071] | 58 | Identifiable* other = object->getIdentifier()->fabricate(nullptr); // fabricates a new instance of MyClass |
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[7401] | 59 | |
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| 60 | |
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| 61 | // test the class hierarchy |
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| 62 | object->getIdentifier()->isA(Class(MyClass)); // returns true |
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| 63 | object->isA(Class(MyClass)); // returns true (short version) |
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| 64 | |
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| 65 | object->isA(Class(BaseClass)); // returns true if MyClass is a child of BaseClass |
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| 66 | |
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| 67 | Class(ChildClass)->isChildOf(object->getIdentifier()); // returns true if ChildClass is a child of MyClass |
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| 68 | @endcode |
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[790] | 69 | */ |
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| 70 | |
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| 71 | #ifndef _Identifier_H__ |
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| 72 | #define _Identifier_H__ |
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[1052] | 73 | |
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[9563] | 74 | #include "core/CorePrereqs.h" |
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[1062] | 75 | |
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[3196] | 76 | #include <cassert> |
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| 77 | #include <map> |
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[1052] | 78 | #include <set> |
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[790] | 79 | #include <string> |
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[1639] | 80 | #include <typeinfo> |
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[7266] | 81 | #include <loki/TypeTraits.h> |
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[790] | 82 | |
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[8858] | 83 | #include "util/Output.h" |
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[10624] | 84 | #include "util/OrxAssert.h" |
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[9563] | 85 | #include "core/object/ObjectList.h" |
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[9667] | 86 | #include "core/object/Listable.h" |
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| 87 | #include "core/object/Context.h" |
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| 88 | #include "core/object/Destroyable.h" |
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| 89 | #include "core/object/WeakPtr.h" |
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[9564] | 90 | #include "IdentifierManager.h" |
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[5781] | 91 | #include "Super.h" |
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[790] | 92 | |
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| 93 | namespace orxonox |
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| 94 | { |
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| 95 | // ############################### |
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| 96 | // ### Identifier ### |
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| 97 | // ############################### |
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| 98 | /** |
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[7401] | 99 | @brief The Identifier is used to identify the class of an object and to store information about the class. |
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[790] | 100 | |
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[7401] | 101 | Each Identifier stores information about one class. The Identifier can then be used to identify |
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| 102 | this class. On the other hand it's also possible to get the corresponding Identifier of a class, |
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| 103 | for example by using the macro Class(). |
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[790] | 104 | |
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[7401] | 105 | @see See @ref IdentifierExample "Identifier.h" for more information and some examples. |
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| 106 | |
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| 107 | @note You can't directly create an Identifier, it's just the base-class of ClassIdentifier<T>. |
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[790] | 108 | */ |
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[9667] | 109 | class _CoreExport Identifier : public Destroyable |
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[790] | 110 | { |
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[9667] | 111 | public: |
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[10624] | 112 | struct InheritsFrom //! helper class to manually define inheritance |
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| 113 | { |
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| 114 | virtual ~InheritsFrom() {} |
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| 115 | virtual Identifier* getParent() const = 0; |
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| 116 | }; |
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| 117 | |
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| 118 | public: |
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| 119 | Identifier(const std::string& name, Factory* factory, bool bLoadable); |
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[9667] | 120 | virtual ~Identifier(); |
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[9564] | 121 | |
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[11071] | 122 | // non-copyable: |
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| 123 | Identifier(const Identifier&) = delete; |
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| 124 | Identifier& operator=(const Identifier&) = delete; |
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| 125 | |
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[7401] | 126 | /// Returns the name of the class the Identifier belongs to. |
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[5929] | 127 | inline const std::string& getName() const { return this->name_; } |
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[790] | 128 | |
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[10624] | 129 | /// Returns the type_info of the class as it is returned by typeid(T) |
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| 130 | virtual const std::type_info& getTypeInfo() = 0; |
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[9667] | 131 | |
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[7401] | 132 | /// Returns the network ID to identify a class through the network. |
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[8706] | 133 | inline uint32_t getNetworkID() const { return this->networkID_; } |
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[5929] | 134 | void setNetworkID(uint32_t id); |
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[790] | 135 | |
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[7401] | 136 | /// Returns the unique ID of the class. |
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[8351] | 137 | ORX_FORCEINLINE unsigned int getClassID() const { return this->classID_; } |
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[5929] | 138 | |
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[7401] | 139 | /// Returns true if the Identifier has a Factory. |
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[11071] | 140 | inline bool hasFactory() const { return (this->factory_ != nullptr); } |
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[790] | 141 | |
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[9667] | 142 | Identifiable* fabricate(Context* context); |
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[5929] | 143 | |
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[7401] | 144 | /// Returns true if the class can be loaded through XML. |
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[5929] | 145 | inline bool isLoadable() const { return this->bLoadable_; } |
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| 146 | |
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[10624] | 147 | /// Returns true if child classes should inherit virtually from this class. |
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| 148 | inline bool isVirtualBase() const { return this->bIsVirtualBase_; } |
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| 149 | /// Defines if child classes should inherit virtually from this class. |
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| 150 | inline void setVirtualBase(bool bIsVirtualBase) { this->bIsVirtualBase_ = bIsVirtualBase; } |
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| 151 | |
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[9667] | 152 | /// Returns true if the Identifier was completely initialized. |
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| 153 | inline bool isInitialized() const { return this->bInitialized_; } |
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| 154 | |
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[10624] | 155 | virtual void destroyObjects() = 0; |
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[9667] | 156 | |
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[10624] | 157 | virtual bool canDynamicCastObjectToIdentifierClass(Identifiable* object) const = 0; |
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| 158 | |
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| 159 | static bool initConfigValues_s; // TODO: this is a hack - remove it as soon as possible |
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| 160 | |
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| 161 | |
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[9667] | 162 | ///////////////////////////// |
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| 163 | ////// Class Hierarchy ////// |
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| 164 | ///////////////////////////// |
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[10624] | 165 | Identifier& inheritsFrom(InheritsFrom* directParent); |
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[9667] | 166 | |
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[10624] | 167 | void initializeParents(const std::list<const Identifier*>& initializationTrace); |
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[9667] | 168 | void finishInitialization(); |
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[10624] | 169 | void reset(); |
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[9667] | 170 | |
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[790] | 171 | bool isA(const Identifier* identifier) const; |
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[871] | 172 | bool isExactlyA(const Identifier* identifier) const; |
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[1052] | 173 | bool isChildOf(const Identifier* identifier) const; |
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[871] | 174 | bool isDirectChildOf(const Identifier* identifier) const; |
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[1052] | 175 | bool isParentOf(const Identifier* identifier) const; |
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[871] | 176 | bool isDirectParentOf(const Identifier* identifier) const; |
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[790] | 177 | |
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[10624] | 178 | /// Returns the direct parents of the class the Identifier belongs to. |
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| 179 | inline const std::list<const Identifier*>& getDirectParents() const { return this->directParents_; } |
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[7401] | 180 | /// Returns the parents of the class the Identifier belongs to. |
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[10624] | 181 | inline const std::list<const Identifier*>& getParents() const { return this->parents_; } |
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[1052] | 182 | |
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[10624] | 183 | /// Returns the direct children the class the Identifier belongs to. |
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| 184 | inline const std::set<const Identifier*>& getDirectChildren() const { return this->directChildren_; } |
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[7401] | 185 | /// Returns the children of the class the Identifier belongs to. |
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[5929] | 186 | inline const std::set<const Identifier*>& getChildren() const { return this->children_; } |
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[1052] | 187 | |
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| 188 | |
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[5929] | 189 | ///////////////////////// |
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| 190 | ///// Config Values ///// |
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| 191 | ///////////////////////// |
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| 192 | virtual void updateConfigValues(bool updateChildren = true) const = 0; |
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| 193 | |
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[7401] | 194 | /// Returns true if this class has at least one config value. |
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[5929] | 195 | inline bool hasConfigValues() const { return this->bHasConfigValues_; } |
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| 196 | |
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| 197 | void addConfigValueContainer(const std::string& varname, ConfigValueContainer* container); |
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| 198 | ConfigValueContainer* getConfigValueContainer(const std::string& varname); |
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[1052] | 199 | |
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[5929] | 200 | |
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| 201 | /////////////////// |
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| 202 | ///// XMLPort ///// |
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| 203 | /////////////////// |
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[7401] | 204 | /// Returns the map that stores all XMLPort params. |
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[5781] | 205 | inline const std::map<std::string, XMLPortParamContainer*>& getXMLPortParamMap() const { return this->xmlportParamContainers_; } |
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| 206 | |
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[7401] | 207 | /// Returns the map that stores all XMLPort objects. |
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[5781] | 208 | inline const std::map<std::string, XMLPortObjectContainer*>& getXMLPortObjectMap() const { return this->xmlportObjectContainers_; } |
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| 209 | |
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| 210 | void addXMLPortParamContainer(const std::string& paramname, XMLPortParamContainer* container); |
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| 211 | XMLPortParamContainer* getXMLPortParamContainer(const std::string& paramname); |
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| 212 | |
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| 213 | void addXMLPortObjectContainer(const std::string& sectionname, XMLPortObjectContainer* container); |
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| 214 | XMLPortObjectContainer* getXMLPortObjectContainer(const std::string& sectionname); |
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| 215 | |
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[1052] | 216 | protected: |
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[5781] | 217 | virtual void createSuperFunctionCaller() const = 0; |
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[1747] | 218 | |
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| 219 | private: |
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[10624] | 220 | void verifyIdentifierTrace() const; |
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| 221 | void addIfNotExists(std::list<const Identifier*>& list, const Identifier* identifierToAdd) const; |
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[790] | 222 | |
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[10624] | 223 | std::list<const InheritsFrom*> manualDirectParents_; //!< Manually defined direct parents |
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| 224 | std::list<const Identifier*> directParents_; //!< The direct parents of the class the Identifier belongs to (sorted by their order of initialization) |
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| 225 | std::list<const Identifier*> parents_; //!< The parents of the class the Identifier belongs to (sorted by their order of initialization) |
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| 226 | |
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[9667] | 227 | std::set<const Identifier*> directChildren_; //!< The direct children of the class the Identifier belongs to |
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[10624] | 228 | std::set<const Identifier*> children_; //!< The children of the class the Identifier belongs to |
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[1052] | 229 | |
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[9667] | 230 | bool bInitialized_; //!< Is true if the Identifier was completely initialized |
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[5781] | 231 | bool bLoadable_; //!< False = it's not permitted to load the object through XML |
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[10624] | 232 | bool bIsVirtualBase_; //!< If true, it is recommended to inherit virtually from this class. This changes the order of initialization of child classes, thus this information is necessary to check the class hierarchy. |
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[1052] | 233 | std::string name_; //!< The name of the class the Identifier belongs to |
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[5929] | 234 | Factory* factory_; //!< The Factory, able to create new objects of the given class (if available) |
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[5781] | 235 | uint32_t networkID_; //!< The network ID to identify a class through the network |
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[10624] | 236 | unsigned int classID_; //!< Uniquely identifies a class (might not be the same as the networkID_) |
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[1052] | 237 | |
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| 238 | bool bHasConfigValues_; //!< True if this class has at least one assigned config value |
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| 239 | std::map<std::string, ConfigValueContainer*> configValues_; //!< A map to link the string of configurable variables with their ConfigValueContainer |
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[5781] | 240 | |
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| 241 | std::map<std::string, XMLPortParamContainer*> xmlportParamContainers_; //!< All loadable parameters |
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| 242 | std::map<std::string, XMLPortObjectContainer*> xmlportObjectContainers_; //!< All attachable objects |
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[790] | 243 | }; |
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| 244 | |
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[1052] | 245 | _CoreExport std::ostream& operator<<(std::ostream& out, const std::set<const Identifier*>& list); |
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[790] | 246 | |
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[1052] | 247 | |
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[790] | 248 | // ############################### |
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| 249 | // ### ClassIdentifier ### |
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| 250 | // ############################### |
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| 251 | /** |
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[7401] | 252 | @brief The ClassIdentifier is derived from Identifier and holds all class-specific functions and variables the Identifier cannot have. |
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| 253 | |
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| 254 | ClassIdentifier is a Singleton, which means that only one ClassIdentifier for a given type T exists. |
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[5695] | 255 | This makes it possible to store information about a class, sharing them with all |
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[1052] | 256 | objects of that class without defining static variables in every class. |
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| 257 | |
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| 258 | To be really sure that not more than exactly one object exists (even with libraries), |
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[7401] | 259 | ClassIdentifiers are stored in a static map in Identifier. |
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[790] | 260 | */ |
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| 261 | template <class T> |
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| 262 | class ClassIdentifier : public Identifier |
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[1052] | 263 | { |
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[11071] | 264 | static_assert(std::is_base_of<Identifiable, T>::value, "ClassIdentifier can only be used with Identifiables"); |
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[10624] | 265 | |
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[7401] | 266 | #ifndef DOXYGEN_SHOULD_SKIP_THIS |
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| 267 | #define SUPER_INTRUSIVE_DECLARATION_INCLUDE |
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| 268 | #include "Super.h" |
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| 269 | #endif |
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[5781] | 270 | |
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[790] | 271 | public: |
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[10624] | 272 | ClassIdentifier(const std::string& name, Factory* factory, bool bLoadable) : Identifier(name, factory, bLoadable) |
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| 273 | { |
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[11071] | 274 | OrxVerify(ClassIdentifier<T>::classIdentifier_s == nullptr, "Assertion failed in ClassIdentifier of type " << typeid(T).name()); |
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[10624] | 275 | ClassIdentifier<T>::classIdentifier_s = this; |
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[1052] | 276 | |
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[10624] | 277 | SuperFunctionInitialization<0, T>::initialize(this); |
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| 278 | } |
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| 279 | ~ClassIdentifier() |
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| 280 | { |
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| 281 | SuperFunctionDestruction<0, T>::destroy(this); |
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| 282 | } |
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| 283 | |
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[9667] | 284 | bool initializeObject(T* object); |
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[3325] | 285 | |
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[11071] | 286 | virtual void updateConfigValues(bool updateChildren = true) const override; |
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[10624] | 287 | |
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[11071] | 288 | virtual const std::type_info& getTypeInfo() override |
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[10624] | 289 | { return typeid(T); } |
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| 290 | |
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[11071] | 291 | virtual bool canDynamicCastObjectToIdentifierClass(Identifiable* object) const override |
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| 292 | { return dynamic_cast<T*>(object) != nullptr; } |
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[10624] | 293 | |
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[11071] | 294 | virtual void destroyObjects() override; |
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[10624] | 295 | |
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| 296 | static ClassIdentifier<T>* getIdentifier(); |
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| 297 | |
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| 298 | private: |
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[11071] | 299 | // non-copyable: |
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| 300 | ClassIdentifier(const ClassIdentifier<T>&) = delete; |
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| 301 | ClassIdentifier& operator=(const ClassIdentifier<T>&) = delete; |
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[10624] | 302 | |
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[9586] | 303 | void setConfigValues(T* object, Configurable*) const; |
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| 304 | void setConfigValues(T* object, Identifiable*) const; |
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| 305 | |
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[9572] | 306 | void addObjectToList(T* object, Listable*); |
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| 307 | void addObjectToList(T* object, Identifiable*); |
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| 308 | |
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[10624] | 309 | void destroyObjects(Listable*); |
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| 310 | void destroyObjects(void*); |
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[1052] | 311 | |
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[10624] | 312 | void destroyObject(Destroyable* object); |
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| 313 | void destroyObject(void* object); |
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[9667] | 314 | |
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| 315 | void updateConfigValues(bool updateChildren, Listable*) const; |
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| 316 | void updateConfigValues(bool updateChildren, Identifiable*) const; |
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| 317 | |
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[11071] | 318 | static WeakPtr<ClassIdentifier<T>> classIdentifier_s; |
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[790] | 319 | }; |
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| 320 | |
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[1543] | 321 | template <class T> |
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[11071] | 322 | WeakPtr<ClassIdentifier<T>> ClassIdentifier<T>::classIdentifier_s; |
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[1543] | 323 | |
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[790] | 324 | /** |
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[1747] | 325 | @brief Returns the only instance of this class. |
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[1543] | 326 | @return The unique Identifier |
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| 327 | */ |
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| 328 | template <class T> |
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[10624] | 329 | /*static*/ inline ClassIdentifier<T>* ClassIdentifier<T>::getIdentifier() |
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[1543] | 330 | { |
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[11071] | 331 | if (ClassIdentifier<T>::classIdentifier_s == nullptr) |
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[10624] | 332 | ClassIdentifier<T>::classIdentifier_s = (ClassIdentifier<T>*) IdentifierManager::getInstance().getIdentifierByTypeInfo(typeid(T)); |
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[1543] | 333 | |
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[11071] | 334 | OrxVerify(ClassIdentifier<T>::classIdentifier_s != nullptr, "Did you forget to register the class of type " << typeid(T).name() << "?"); |
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[1543] | 335 | return ClassIdentifier<T>::classIdentifier_s; |
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| 336 | } |
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| 337 | |
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| 338 | /** |
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[790] | 339 | @brief Adds an object of the given type to the ObjectList. |
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| 340 | @param object The object to add |
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| 341 | */ |
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| 342 | template <class T> |
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[9667] | 343 | bool ClassIdentifier<T>::initializeObject(T* object) |
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[790] | 344 | { |
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[9667] | 345 | orxout(verbose, context::object_list) << "Register Object: " << this->getName() << endl; |
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[3325] | 346 | |
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| 347 | object->identifier_ = this; |
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[9667] | 348 | if (IdentifierManager::getInstance().isCreatingHierarchy()) |
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[3325] | 349 | { |
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[9667] | 350 | IdentifierManager::getInstance().createdObject(object); |
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[3325] | 351 | |
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[10624] | 352 | if (Identifier::initConfigValues_s) |
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| 353 | this->setConfigValues(object, object); |
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| 354 | |
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[3325] | 355 | return true; |
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| 356 | } |
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| 357 | else |
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| 358 | { |
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[9572] | 359 | this->addObjectToList(object, object); |
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[3325] | 360 | |
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[9566] | 361 | // Add pointer of type T to the map in the Identifiable instance that enables "dynamic_casts" |
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[11071] | 362 | object->objectPointers_.emplace_back(this->getClassID(), static_cast<void*>(object)); |
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[3325] | 363 | return false; |
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| 364 | } |
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[790] | 365 | } |
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| 366 | |
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| 367 | /** |
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[9586] | 368 | * @brief Only configures the object if is a @ref Configurable |
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| 369 | */ |
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| 370 | template <class T> |
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| 371 | void ClassIdentifier<T>::setConfigValues(T* object, Configurable*) const |
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| 372 | { |
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| 373 | object->setConfigValues(); |
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| 374 | } |
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| 375 | |
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| 376 | template <class T> |
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| 377 | void ClassIdentifier<T>::setConfigValues(T*, Identifiable*) const |
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| 378 | { |
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| 379 | // no action |
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| 380 | } |
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| 381 | |
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| 382 | /** |
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[9572] | 383 | * @brief Only adds the object to the object list if is a @ref Listable |
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| 384 | */ |
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| 385 | template <class T> |
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[9667] | 386 | void ClassIdentifier<T>::addObjectToList(T* object, Listable* listable) |
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[9572] | 387 | { |
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[9667] | 388 | if (listable->getContext()) |
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| 389 | listable->getContext()->addObject(object); |
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[9572] | 390 | } |
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| 391 | |
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| 392 | template <class T> |
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| 393 | void ClassIdentifier<T>::addObjectToList(T*, Identifiable*) |
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| 394 | { |
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| 395 | // no action |
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| 396 | } |
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| 397 | |
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| 398 | /** |
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[10624] | 399 | * @brief Destroy all objects of this class (must be Listable). |
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| 400 | * Destroyables are destroyed with destroy(), all other classes with delete. |
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| 401 | */ |
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| 402 | template <class T> |
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| 403 | void ClassIdentifier<T>::destroyObjects() |
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| 404 | { |
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[11071] | 405 | this->destroyObjects((T*)nullptr); |
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[10624] | 406 | } |
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| 407 | |
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| 408 | /** |
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| 409 | * @brief Only searches and destroys objects if is a @ref Listable |
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| 410 | */ |
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| 411 | template <class T> |
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| 412 | void ClassIdentifier<T>::destroyObjects(Listable*) |
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| 413 | { |
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[11071] | 414 | ObjectList<T> list(Context::getRootContext()->getObjectList(this)); |
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| 415 | for (typename ObjectList<T>::iterator it = list.begin(); it != list.end(); ) |
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[10624] | 416 | this->destroyObject(*(it++)); |
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| 417 | } |
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| 418 | |
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| 419 | template <class T> |
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| 420 | void ClassIdentifier<T>::destroyObjects(void*) |
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| 421 | { |
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| 422 | // no action |
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| 423 | } |
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| 424 | |
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| 425 | /** |
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| 426 | * @brief Call 'object->destroy()' for Destroyables and 'delete object' for all other types. |
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| 427 | */ |
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| 428 | template <class T> |
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| 429 | void ClassIdentifier<T>::destroyObject(Destroyable* object) |
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| 430 | { |
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| 431 | object->destroy(); |
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| 432 | } |
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| 433 | |
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| 434 | template <class T> |
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| 435 | void ClassIdentifier<T>::destroyObject(void* object) |
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| 436 | { |
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| 437 | delete static_cast<Identifiable*>(object); |
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| 438 | } |
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| 439 | |
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| 440 | /** |
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[1052] | 441 | @brief Updates the config-values of all existing objects of this class by calling their setConfigValues() function. |
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[790] | 442 | */ |
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| 443 | template <class T> |
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[1747] | 444 | void ClassIdentifier<T>::updateConfigValues(bool updateChildren) const |
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[790] | 445 | { |
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[11071] | 446 | this->updateConfigValues(updateChildren, static_cast<T*>(nullptr)); |
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[9667] | 447 | } |
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| 448 | |
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| 449 | template <class T> |
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| 450 | void ClassIdentifier<T>::updateConfigValues(bool updateChildren, Listable*) const |
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| 451 | { |
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[1747] | 452 | if (!this->hasConfigValues()) |
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| 453 | return; |
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[790] | 454 | |
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[11071] | 455 | for (T* object : ObjectList<T>()) |
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| 456 | this->setConfigValues(object, object); |
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[1052] | 457 | |
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[1747] | 458 | if (updateChildren) |
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[11071] | 459 | for (const Identifier* child : this->getChildren()) |
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| 460 | child->updateConfigValues(false); |
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[1052] | 461 | } |
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| 462 | |
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[9667] | 463 | template <class T> |
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| 464 | void ClassIdentifier<T>::updateConfigValues(bool updateChildren, Identifiable*) const |
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| 465 | { |
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| 466 | // no action |
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| 467 | } |
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[1052] | 468 | |
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[9667] | 469 | |
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[790] | 470 | // ############################### |
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[3325] | 471 | // ### orxonox_cast ### |
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| 472 | // ############################### |
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| 473 | /** |
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| 474 | @brief |
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[9566] | 475 | Casts on object of type Identifiable to any derived type that is |
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[3325] | 476 | registered in the class hierarchy. |
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| 477 | @return |
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[11071] | 478 | Returns nullptr if the cast is not possible |
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[3325] | 479 | @note |
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[11071] | 480 | In case of nullptr return (and using MSVC), a dynamic_cast might still be possible if |
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[3325] | 481 | a class forgot to register its objects. |
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| 482 | Also note that the function is implemented differently for GCC/MSVC. |
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| 483 | */ |
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| 484 | template <class T, class U> |
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[8351] | 485 | ORX_FORCEINLINE T orxonox_cast(U* source) |
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[3325] | 486 | { |
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[3332] | 487 | #ifdef ORXONOX_COMPILER_MSVC |
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[3333] | 488 | typedef Loki::TypeTraits<typename Loki::TypeTraits<T>::PointeeType>::NonConstType ClassType; |
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[11071] | 489 | if (source != nullptr) |
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[3370] | 490 | return source->template getDerivedPointer<ClassType>(ClassIdentifier<ClassType>::getIdentifier()->getClassID()); |
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| 491 | else |
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[11071] | 492 | return nullptr; |
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[3332] | 493 | #else |
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| 494 | return dynamic_cast<T>(source); |
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| 495 | #endif |
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[3325] | 496 | } |
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[790] | 497 | } |
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| 498 | |
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| 499 | #endif /* _Identifier_H__ */ |
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