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-rw-r--r--include/llvm/ADT/OwningPtr.h165
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diff --git a/include/llvm/ADT/OwningPtr.h b/include/llvm/ADT/OwningPtr.h
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--- a/include/llvm/ADT/OwningPtr.h
+++ /dev/null
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-//===- 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