#ifndef LLVM_ADT_OWNING_PTR_H
#define LLVM_ADT_OWNING_PTR_H
#include <cassert>
#include <cstddef>
namespace llvm {
template<class T>
class OwningPtr {
OwningPtr(OwningPtr const &); OwningPtr &operator=(OwningPtr const &); T *Ptr;
public:
explicit OwningPtr(T *P = 0) : Ptr(P) {}
~OwningPtr() {
delete Ptr;
}
void reset(T *P = 0) {
if (P == Ptr) return;
T *Tmp = Ptr;
Ptr = P;
delete Tmp;
}
T *take() {
T *Tmp = Ptr;
Ptr = 0;
return Tmp;
}
T &operator*() const {
assert(Ptr && "Cannot dereference null pointer");
return *Ptr;
}
T *operator->() const { return Ptr; }
T *get() const { return Ptr; }
operator bool() const { return Ptr != 0; }
bool operator!() const { return Ptr == 0; }
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);
}
template<class T>
class OwningArrayPtr {
OwningArrayPtr(OwningArrayPtr const &); OwningArrayPtr &operator=(OwningArrayPtr const &); T *Ptr;
public:
explicit OwningArrayPtr(T *P = 0) : Ptr(P) {}
~OwningArrayPtr() {
delete [] Ptr;
}
void reset(T *P = 0) {
if (P == Ptr) return;
T *Tmp = Ptr;
Ptr = P;
delete [] Tmp;
}
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; }
operator bool() const { return Ptr != 0; }
bool operator!() const { return Ptr == 0; }
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);
}
}
#endif