VVMScopeInline.h

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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
 
#if WITH_VERSE_VM || defined(__INTELLISENSE__)
 
#include "VerseVM/VVMScope.h"
 
#include <type_traits>
 
namespace Verse
{
inline size_t VScope::NumBytes(uint32 NumCaptures)
{
    static_assert(std::is_array_v<decltype(Captures)>);
    return offsetof(VScope, Captures) + sizeof(std::remove_extent_t<decltype(Captures)>) * NumCaptures;
}
 
inline VScope& VScope::New(FAllocationContext Context, VScope* ParentScope, uint32 NumCaptures)
{
    return *new (Context.AllocateFastCell(NumBytes(NumCaptures))) VScope{Context, ParentScope, NumCaptures};
}
 
inline VScope& VScope::New(FAllocationContext Context, VClass* SuperClass)
{
    if (!SuperClass)
    {
        return New(Context);
    }
    VScope& Scope = New(Context, nullptr, 1);
    Scope.Captures[0].Set(Context, *SuperClass);
    return Scope;
}
 
inline VScope& VScope::New(FAllocationContext Context)
{
    return New(Context, nullptr, 0);
}
 
inline VScope& VScope::NewUninitialized(FAllocationContext Context, uint32 NumCaptures)
{
    return *new (Context.AllocateFastCell(NumBytes(NumCaptures))) VScope{Context, nullptr, NumCaptures};
}
 
inline VScope& VScope::GetRootScope()
{
    for (auto I = this;;)
    {
        auto J = I->ParentScope.Get();
        if (!J)
        {
            return *I;
        }
        I = J;
    }
}
 
inline VScope::VScope(FAllocationContext Context, VScope* ParentScope, uint32 NumCaptures)
    : VCell{Context, &GlobalTrivialEmergentType.Get(Context)}
    , ParentScope{Context, ParentScope}
    , NumCaptures{NumCaptures}
{
    for (auto I = Captures, Last = Captures + NumCaptures; I != Last; ++I)
    {
        static_assert(std::is_array_v<decltype(Captures)>);
        new (I) std::remove_extent_t<decltype(Captures)>{};
    }
}
} // namespace Verse
 
#endif // WITH_VERSE_VM