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Diffstat (limited to 'include/llvm/ADT/OwningPtr.h')
-rw-r--r-- | include/llvm/ADT/OwningPtr.h | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/include/llvm/ADT/OwningPtr.h b/include/llvm/ADT/OwningPtr.h deleted file mode 100644 index 5e83358..0000000 --- a/include/llvm/ADT/OwningPtr.h +++ /dev/null @@ -1,165 +0,0 @@ -//===- llvm/ADT/OwningPtr.h - Smart ptr that owns the pointee ---*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file defines and implements the OwningPtr class. -// -//===----------------------------------------------------------------------===// - -#ifndef LLVM_ADT_OWNINGPTR_H -#define LLVM_ADT_OWNINGPTR_H - -#include "llvm/Support/Compiler.h" -#include <cassert> -#include <cstddef> -#include <memory> - -namespace llvm { - -/// OwningPtr smart pointer - OwningPtr mimics a built-in pointer except that it -/// guarantees deletion of the object pointed to, either on destruction of the -/// OwningPtr or via an explicit reset(). Once created, ownership of the -/// pointee object can be taken away from OwningPtr by using the take method. -template<class T> -class OwningPtr { - OwningPtr(OwningPtr const &) LLVM_DELETED_FUNCTION; - OwningPtr &operator=(OwningPtr const &) LLVM_DELETED_FUNCTION; - T *Ptr; -public: - explicit OwningPtr(T *P = 0) : Ptr(P) {} - - OwningPtr(OwningPtr &&Other) : Ptr(Other.take()) {} - - OwningPtr &operator=(OwningPtr &&Other) { - reset(Other.take()); - return *this; - } - - OwningPtr(std::unique_ptr<T> Other) : Ptr(Other.release()) {} - - OwningPtr &operator=(std::unique_ptr<T> Other) { - reset(Other.release()); - return *this; - } - -#if LLVM_HAS_RVALUE_REFERENCE_THIS - operator std::unique_ptr<T>() && { return std::unique_ptr<T>(take()); } -#endif - - ~OwningPtr() { - delete Ptr; - } - - /// reset - Change the current pointee to the specified pointer. Note that - /// calling this with any pointer (including a null pointer) deletes the - /// current pointer. - void reset(T *P = 0) { - if (P == Ptr) return; - T *Tmp = Ptr; - Ptr = P; - delete Tmp; - } - - /// take - Reset the owning pointer to null and return its pointer. This does - /// not delete the pointer before returning it. - T *take() { - T *Tmp = Ptr; - Ptr = nullptr; - return Tmp; - } - - T *release() { return take(); } - - std::unique_ptr<T> take_unique() { return std::unique_ptr<T>(take()); } - - T &operator*() const { - assert(Ptr && "Cannot dereference null pointer"); - return *Ptr; - } - - T *operator->() const { return Ptr; } - T *get() const { return Ptr; } - LLVM_EXPLICIT operator bool() const { return Ptr != nullptr; } - bool operator!() const { return Ptr == nullptr; } - bool isValid() const { return Ptr != nullptr; } - - void swap(OwningPtr &RHS) { - T *Tmp = RHS.Ptr; - RHS.Ptr = Ptr; - Ptr = Tmp; - } -}; - -template<class T> -inline void swap(OwningPtr<T> &a, OwningPtr<T> &b) { - a.swap(b); -} - -/// OwningArrayPtr smart pointer - OwningArrayPtr provides the same -/// functionality as OwningPtr, except that it works for array types. -template<class T> -class OwningArrayPtr { - OwningArrayPtr(OwningArrayPtr const &) LLVM_DELETED_FUNCTION; - OwningArrayPtr &operator=(OwningArrayPtr const &) LLVM_DELETED_FUNCTION; - T *Ptr; -public: - explicit OwningArrayPtr(T *P = 0) : Ptr(P) {} - - OwningArrayPtr(OwningArrayPtr &&Other) : Ptr(Other.take()) {} - - OwningArrayPtr &operator=(OwningArrayPtr &&Other) { - reset(Other.take()); - return *this; - } - - ~OwningArrayPtr() { - delete [] Ptr; - } - - /// reset - Change the current pointee to the specified pointer. Note that - /// calling this with any pointer (including a null pointer) deletes the - /// current pointer. - void reset(T *P = 0) { - if (P == Ptr) return; - T *Tmp = Ptr; - Ptr = P; - delete [] Tmp; - } - - /// take - Reset the owning pointer to null and return its pointer. This does - /// not delete the pointer before returning it. - T *take() { - T *Tmp = Ptr; - Ptr = 0; - return Tmp; - } - - T &operator[](std::ptrdiff_t i) const { - assert(Ptr && "Cannot dereference null pointer"); - return Ptr[i]; - } - - T *get() const { return Ptr; } - LLVM_EXPLICIT operator bool() const { return Ptr != 0; } - bool operator!() const { return Ptr == nullptr; } - - void swap(OwningArrayPtr &RHS) { - T *Tmp = RHS.Ptr; - RHS.Ptr = Ptr; - Ptr = Tmp; - } -}; - -template<class T> -inline void swap(OwningArrayPtr<T> &a, OwningArrayPtr<T> &b) { - a.swap(b); -} - -} // end namespace llvm - -#endif |