forked from Mirrors/openclonk
75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
/*
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* OpenClonk, http://www.openclonk.org
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*
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* Copyright (c) 2010-2016, The OpenClonk Team and contributors
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*
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* Distributed under the terms of the ISC license; see accompanying file
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* "COPYING" for details.
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*
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* "Clonk" is a registered trademark of Matthes Bender, used with permission.
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* See accompanying file "TRADEMARK" for details.
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*
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* To redistribute this file separately, substitute the full license texts
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* for the above references.
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*/
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/* A convenient way to (de)serialize object pointers */
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#ifndef INC_C4ObjectPtr
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#define INC_C4ObjectPtr
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// An enumerable C4Object pointer
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class C4ObjectPtr
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{
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public:
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// For use with mkNamingAdapt because simply 0 becomes 0 (the int)
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// which makes correct template deduction fail. This constant is a
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// denumerated null pointer which can be repeatedly denumerated.
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static const C4ObjectPtr Null;
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C4ObjectPtr() = default; // uninitialized
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C4ObjectPtr(C4Object* pObj)
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#ifndef NDEBUG
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: fDenumerated(true)
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#endif
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{
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data.ptr = pObj;
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}
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void CompileFunc(StdCompiler* pComp);
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void DenumeratePointers();
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bool operator!() const { assert(fDenumerated); return !data.ptr; }
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bool operator==(C4Object* other) const { assert(fDenumerated); return data.ptr == other; }
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bool operator==(const C4ObjectPtr& other) const { assert(fDenumerated == other.fDenumerated); return data.ptr == other.data.ptr; }
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bool operator!=(C4Object* other) const { assert(fDenumerated); return data.ptr != other; }
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bool operator!=(const C4ObjectPtr& other) const { assert(fDenumerated == other.fDenumerated); return data.ptr != other.data.ptr; }
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C4ObjectPtr operator=(C4Object* object)
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{
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#ifndef NDEBUG
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fDenumerated = true;
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#endif
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data.ptr = object;
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return *this;
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}
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C4Object& operator*() const { assert(fDenumerated); return *data.ptr; }
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C4Object* operator->() const { assert(fDenumerated); return data.ptr; }
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operator C4Object*() const { assert(fDenumerated); return data.ptr; }
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protected:
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#ifndef NDEBUG
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bool fDenumerated;
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#endif
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union
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{
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C4Object* ptr;
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intptr_t nptr; // needs to have same size as ptr for operator== to work when enumerated
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} data;
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};
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#endif
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