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Improve Engine API export, robust Default Value logic and allow _ in arg

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Lukas Joergensen 2019-08-03 17:54:21 +02:00 • committed by Lukas Aldershaab
parent 8bede52d3b
commit d567bc9735
3 changed files with 86 additions and 43 deletions
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33
Engine/source/console/engineFunctions.h
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@ -67,18 +67,9 @@ struct EngineFunctionDefaultArguments
/// @warn This is @b NOT the size of the memory block returned by getArgs() and also
/// not the number of elements it contains.
U32 mNumDefaultArgs;
/// Return a pointer to the variable-sized array of default argument values.
///
/// @warn The arguments must be stored @b IMMEDIATELY after #mNumDefaultArgs.
/// @warn This is a @b FULL frame and not just the default arguments, i.e. it starts with the
/// first argument that the function takes and ends with the last argument it takes.
/// @warn If the compiler's #pragma pack is buggy, the elements in this structure are allowed
/// to be 4-byte aligned rather than byte-aligned as they should be.
const U8* getArgs() const
{
return ( const U8* ) &( mNumDefaultArgs ) + sizeof( mNumDefaultArgs );
}
U32* mOffsets;
U8* mFirst;
};
@ -130,13 +121,29 @@ private:
SelfType::template copyHelper<TailTs...>(argsT, tailT, typename Gens<sizeof...(TailTs)>::type());
return argsT;
};
template<size_t I = 0>
typename std::enable_if<I == sizeof...(ArgTs)>::type initOffsetsHelper()
{ }
template<size_t I = 0>
typename std::enable_if < I < sizeof...(ArgTs)>::type initOffsetsHelper()
{
mOffsets[I] = fixed_tuple_offset<I>(mArgs);
initOffsetsHelper<I + 1>();
}
public:
template<typename ...TailTs> _EngineFunctionDefaultArguments(TailTs ...tail)
: EngineFunctionDefaultArguments({sizeof...(TailTs)})
: EngineFunctionDefaultArguments()
{
std::tuple<DefVST<ArgTs>...> tmpTup = SelfType::tailInit(tail...);
fixed_tuple_mutator<void(DefVST<ArgTs>...), void(DefVST<ArgTs>...)>::copy(tmpTup, mArgs);
mNumDefaultArgs = sizeof...(TailTs);
mOffsets = new U32[sizeof...(ArgTs)];
initOffsetsHelper();
mFirst = (U8*)& mArgs;
}
};