forked from Mirrors/openclonk
C4Set: Replace elements with zero-initialized ones on clear
C4Set used to set its removed elements to nullptr. This requires some special handling from non-pointer entries like C4Property. Overwriting the element with a zero-initialized one removes this requirement, leading to improved type safety on the part of C4Property.master
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15ad4fb690
commit
31c7805f10
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@ -54,8 +54,6 @@ public:
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C4String * Key{nullptr};
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C4Value Value;
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operator const void * () const { return Key; }
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C4Property & operator = (void * p)
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{ assert(!p); if (Key) Key->DecRef(); Key = nullptr; Value.Set0(); return *this; }
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bool operator < (const C4Property &cmp) const { return strcmp(GetSafeKey(), cmp.GetSafeKey())<0; }
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const char *GetSafeKey() const { if (Key && Key->GetCStr()) return Key->GetCStr(); return ""; } // get key as C string; return "" if undefined. never return nullptr
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};
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@ -2,7 +2,7 @@
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* OpenClonk, http://www.openclonk.org
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*
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* Copyright (c) 2001-2009, RedWolf Design GmbH, http://www.clonk.de/
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* Copyright (c) 2009-2016, The OpenClonk Team and contributors
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* Copyright (c) 2009-2019, 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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@ -145,7 +145,7 @@ template<typename T> class C4Set
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void ClearTable()
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{
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for (unsigned int i = 0; i < Capacity; ++i)
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Table[i] = nullptr;
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Table[i] = T{};
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}
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void MaintainCapacity()
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{
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@ -240,13 +240,13 @@ public:
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r = &Table[++h % Capacity];
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}
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assert(*r);
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*r = nullptr;
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*r = T{};
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--Size;
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// Move entries which might have collided with e
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while (*(r = &Table[++h % Capacity]))
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{
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T m = *r;
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*r = nullptr;
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*r = T{};
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AddInternal(std::move(m));
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}
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}
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