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- made all iterator classes natively abstract so that they do not get a ConstructNative method so that OP_NEW can refuse creating them without the need to mark them as abstract.
- block creation of actors with the 'new' instruction. Unlike the above these cannot be made abstract because without ConstructNative they cannot be serialized.
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parent
20c56f6dda
commit
878e6015df
4 changed files with 18 additions and 5 deletions
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@ -3084,6 +3084,7 @@ DObject *PClass::CreateNew()
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if (ConstructNative == nullptr)
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{
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M_Free(mem);
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I_Error("Attempt to instantiate abstract class %s.", TypeName.GetChars());
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}
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ConstructNative (mem);
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@ -709,7 +709,7 @@ DThinker *FThinkerIterator::Next (bool exact)
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class DThinkerIterator : public DObject, public FThinkerIterator
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{
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DECLARE_CLASS(DThinkerIterator, DObject)
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DECLARE_ABSTRACT_CLASS(DThinkerIterator, DObject)
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DThinkerIterator()
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{
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@ -722,7 +722,7 @@ public:
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}
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};
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IMPLEMENT_CLASS(DThinkerIterator, false, false);
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IMPLEMENT_CLASS(DThinkerIterator, true, false);
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DEFINE_ACTION_FUNCTION(DThinkerIterator, Create)
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{
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PARAM_PROLOGUE;
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@ -7866,7 +7866,7 @@ DEFINE_ACTION_FUNCTION(AActor, GetBobOffset)
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class DActorIterator : public DObject, public NActorIterator
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{
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DECLARE_CLASS(DActorIterator, DObject)
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DECLARE_ABSTRACT_CLASS(DActorIterator, DObject)
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public:
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DActorIterator(PClassActor *cls= nullptr, int tid = 0)
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@ -7875,7 +7875,7 @@ public:
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}
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};
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IMPLEMENT_CLASS(DActorIterator, false, false);
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IMPLEMENT_CLASS(DActorIterator, true, false);
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DEFINE_ACTION_FUNCTION(DActorIterator, Create)
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{
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PARAM_PROLOGUE;
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@ -811,7 +811,19 @@ begin:
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{
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b = B;
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PClass *cls = (PClass*)(pc->op == OP_NEW ? reg.a[b] : konsta[b].v);
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if (cls->ObjectFlags & OF_Abstract) ThrowAbortException(X_OTHER, "Cannot instantiate abstract class %s", cls->TypeName.GetChars());
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if (cls->ConstructNative == nullptr)
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{
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ThrowAbortException(X_OTHER, "Class %s requires native construction", cls->TypeName.GetChars());
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}
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if (cls->ObjectFlags & OF_Abstract)
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{
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ThrowAbortException(X_OTHER, "Cannot instantiate abstract class %s", cls->TypeName.GetChars());
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}
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// Creating actors here must be outright prohibited,
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if (cls->IsDescendantOf(RUNTIME_CLASS(AActor)))
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{
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ThrowAbortException(X_OTHER, "Cannot create actors with 'new'");
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}
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// [ZZ] validate readonly and between scope construction
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c = C;
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if (c) FScopeBarrier::ValidateNew(cls, c - 1);
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