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Removed scoped_ptr, as its functionality is subsumed by OwningPtr.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45274 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ted Kremenek 2007-12-21 00:15:29 +00:00
parent 700a0fba97
commit 48da1edde0
1 changed files with 0 additions and 124 deletions
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include/llvm/ADT/scoped_ptr.h
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//===- llvm/ADT/scoped_ptr.h - basic smart pointer --------------*- 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 the scoped_ptr smart pointer: scoped_ptr mimics a built-in
// pointer except that it guarantees deletion of the object pointed to, either
// on destruction of the scoped_ptr or via an explicit reset(). scoped_ptr is a
// simple solution for simple needs.
//
//===----------------------------------------------------------------------===//
//
// (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
// Copyright (c) 2001, 2002 Peter Dimov
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file llvm/docs/BOOST_LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt )
//
// http://www.boost.org/libs/smart_ptr/scoped_ptr.htm
//
#ifndef LLVM_SCOPED_PTR_H_INCLUDED
#define LLVM_SCOPED_PTR_H_INCLUDED
#include <cassert>
namespace llvm {
// verify that types are complete for increased safety
template<class T>
inline void checked_delete(T * x) {
// intentionally complex - simplification causes warnings in some compilers.
typedef char type_must_be_complete[sizeof(T) ? 1 : -1];
(void)sizeof(type_must_be_complete);
delete x;
}
/// scoped_ptr mimics a built-in pointer except that it guarantees deletion
/// of the object pointed to, either on destruction of the scoped_ptr or via
/// an explicit reset(). scoped_ptr is a simple solution for simple needs;
/// use shared_ptr or std::auto_ptr if your needs are more complex.
template<class T>
class scoped_ptr {// noncopyable
T *ptr;
scoped_ptr(scoped_ptr const &); // DO NOT IMPLEMENT
scoped_ptr & operator=(scoped_ptr const &); // DO NOT IMPLEMENT
typedef scoped_ptr<T> this_type;
public:
typedef T element_type;
explicit scoped_ptr(T * p = 0): ptr(p) {} // never throws
~scoped_ptr() { // never throws
llvm::checked_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) {
// catch self-reset errors
assert((p == 0 || p != ptr) && "scoped_ptr: self-reset error");
T *tmp = ptr;
ptr = p;
delete tmp;
}
/// take - Reset the scoped pointer to null and return its pointer. This does
/// not delete the pointer before returning it.
T *take() {
T *P = ptr;
ptr = 0;
return P;
}
T& operator*() const {
assert(ptr != 0 && "scoped_ptr: Trying to dereference a null pointer");
return *ptr;
}
T* operator->() const {
assert(ptr != 0 && "scoped_ptr: Trying to dereference a null pointer");
return ptr;
}
T* get() const {
return ptr;
}
// implicit conversion to "bool"
typedef T * this_type::*unspecified_bool_type;
operator unspecified_bool_type() const {// never throws
return ptr == 0? 0: &this_type::ptr;
}
bool operator!() const { // never throws
return ptr == 0;
}
void swap(scoped_ptr &b) {// never throws
T * tmp = b.ptr;
b.ptr = ptr;
ptr = tmp;
}
};
template<class T> inline void swap(scoped_ptr<T> &a, scoped_ptr<T> &b) {
// never throws
a.swap(b);
}
// get_pointer(p) is a generic way to say p.get()
template<class T> inline T * get_pointer(scoped_ptr<T> const &p) {
return p.get();
}
} // namespace llvm
#endif // #ifndef LLVM_SCOPED_PTR_HPP_INCLUDED