Cleanup: Remove ScopedGenericObj. Use scoped_ptr<type, CustomDeleter> instead.

base/memory/scoped_generic_obj.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef BASE_MEMORY_SCOPED_GENERIC_OBJ_H_
-#define BASE_MEMORY_SCOPED_GENERIC_OBJ_H_
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-
-// ScopedGenericObj<> is patterned after scoped_ptr_malloc<>, except
-// that it assumes the template argument is typedef'ed to a pointer
-// type. It does not support retain/release semantics. It takes as its
-// second template argument a functor which frees the object.
-//
-// Example (Mac-specific):
-//
-// class ScopedDestroyRendererInfo {
-//  public:
-//   void operator()(CGLRendererInfoObj x) const {
-//     CGLDestroyRendererInfo(x);
-//   }
-// };
-//
-// ...
-//
-//   CGLRendererInfoObj renderer_info = NULL;
-//   ...
-//   ScopedGenericObj<CGLRendererInfoObj, ScopedDestroyRendererInfo>
-//       scoper(renderer_info);
-
-template<class C, class FreeProc>
-class ScopedGenericObj {
- public:
-
-  // The element type
-  typedef C element_type;
-
-  // Constructor.  Defaults to initializing with NULL.
-  // There is no way to create an uninitialized ScopedGenericObj.
-  // The input parameter must be allocated with an allocator that matches the
-  // Free functor.
-  explicit ScopedGenericObj(C p = C()): obj_(p) {}
-
-  // Destructor.  If there is a C object, call the Free functor.
-  ~ScopedGenericObj() {
-    reset();
-  }
-
-  // Reset.  Calls the Free functor on the current owned object, if any.
-  // Then takes ownership of a new object, if given.
-  // this->reset(this->get()) works.
-  void reset(C p = C()) {
-    if (obj_ != p) {
-      FreeProc free_proc;
-      free_proc(obj_);
-      obj_ = p;
-    }
-  }
-
-  operator C() const {
-    return obj_;
-  }
-
-  C get() const {
-    return obj_;
-  }
-
-  // Comparison operators.
-  // These return whether a ScopedGenericObj and a plain pointer refer
-  // to the same object, not just to two different but equal objects.
-  // For compatibility with the boost-derived implementation, these
-  // take non-const arguments.
-  bool operator==(C p) const {
-    return obj_ == p;
-  }
-
-  bool operator!=(C p) const {
-    return obj_ != p;
-  }
-
-  // Swap two ScopedGenericObjs.
-  void swap(ScopedGenericObj& b) {
-    C tmp = b.obj_;
-    b.obj_ = obj_;
-    obj_ = tmp;
-  }
-
-  // Release a pointer.
-  // The return value is the current pointer held by this object.
-  // If this object holds a NULL pointer, the return value is NULL.
-  // After this operation, this object will hold a NULL pointer,
-  // and will not own the object any more.
-  C release() WARN_UNUSED_RESULT {
-    C tmp = obj_;
-    obj_ = NULL;
-    return tmp;
-  }
-
- private:
-  C obj_;
-
-  // no reason to use these: each ScopedGenericObj should have its own object.
-  template <class C2, class GP>
-  bool operator==(ScopedGenericObj<C2, GP> const& p) const;
-  template <class C2, class GP>
-  bool operator!=(ScopedGenericObj<C2, GP> const& p) const;
-
-  // Disallow evil constructors.
-  ScopedGenericObj(const ScopedGenericObj&);
-  void operator=(const ScopedGenericObj&);
-};
-
-template<class C, class FP> inline
-void swap(ScopedGenericObj<C, FP>& a, ScopedGenericObj<C, FP>& b) {
-  a.swap(b);
-}
-
-template<class C, class FP> inline
-bool operator==(C* p, const ScopedGenericObj<C, FP>& b) {
-  return p == b.get();
-}
-
-template<class C, class FP> inline
-bool operator!=(C* p, const ScopedGenericObj<C, FP>& b) {
-  return p != b.get();
-}
-
-#endif  // BASE_MEMORY_SCOPED_GENERIC_OBJ_H_