[llvm] r289579 - ADT: Add OwningArrayRef class.
David Blaikie via llvm-commits
llvm-commits at lists.llvm.org
Mon Dec 19 19:56:22 PST 2016
Is this really worth having compared to std::vector? std::dynarray was
rejected from standardization for that reason, if I understand/heard
correctly (& OwningArrayRef seems similar to std::dynarray)
On Tue, Dec 13, 2016 at 12:34 PM Peter Collingbourne via llvm-commits <
llvm-commits at lists.llvm.org> wrote:
> Author: pcc
> Date: Tue Dec 13 14:24:24 2016
> New Revision: 289579
>
> URL: http://llvm.org/viewvc/llvm-project?rev=289579&view=rev
> Log:
> ADT: Add OwningArrayRef class.
>
> This is a MutableArrayRef that owns its array.
> I plan to use this in D22296.
>
> Differential Revision: https://reviews.llvm.org/D27723
>
> Modified:
> llvm/trunk/include/llvm/ADT/ArrayRef.h
>
> Modified: llvm/trunk/include/llvm/ADT/ArrayRef.h
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ADT/ArrayRef.h?rev=289579&r1=289578&r2=289579&view=diff
>
> ==============================================================================
> --- llvm/trunk/include/llvm/ADT/ArrayRef.h (original)
> +++ llvm/trunk/include/llvm/ADT/ArrayRef.h Tue Dec 13 14:24:24 2016
> @@ -413,6 +413,25 @@ namespace llvm {
> }
> };
>
> + /// This is a MutableArrayRef that owns its array.
> + template <typename T> class OwningArrayRef : public MutableArrayRef<T> {
> + public:
> + OwningArrayRef() {}
> + OwningArrayRef(size_t Size) : MutableArrayRef<T>(new T[Size], Size) {}
> + OwningArrayRef(ArrayRef<T> Data)
> + : MutableArrayRef<T>(new T[Data.size()], Data.size()) {
> + std::copy(Data.begin(), Data.end(), this->begin());
> + }
> + OwningArrayRef(OwningArrayRef &&Other) { *this = Other; }
> + OwningArrayRef &operator=(OwningArrayRef &&Other) {
> + delete this->data();
> + this->MutableArrayRef<T>::operator=(Other);
> + Other.MutableArrayRef<T>::operator=(MutableArrayRef<T>());
> + return *this;
> + }
> + ~OwningArrayRef() { delete this->data(); }
> + };
> +
> /// @name ArrayRef Convenience constructors
> /// @{
>
>
>
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