зеркало из https://github.com/mozilla/gecko-dev.git
58 строки
1.5 KiB
C++
58 строки
1.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef mozilla_AppData_h
|
|
#define mozilla_AppData_h
|
|
|
|
#include "nsXREAppData.h"
|
|
#include "nscore.h"
|
|
#include "nsStringGlue.h"
|
|
|
|
namespace mozilla {
|
|
|
|
// Like nsXREAppData, but releases all strong refs/allocated memory
|
|
// in the destructor.
|
|
class NS_COM_GLUE ScopedAppData : public nsXREAppData
|
|
{
|
|
public:
|
|
ScopedAppData() { Zero(); this->size = sizeof(*this); }
|
|
|
|
ScopedAppData(const nsXREAppData* aAppData);
|
|
|
|
void Zero() { memset(this, 0, sizeof(*this)); }
|
|
|
|
~ScopedAppData();
|
|
};
|
|
|
|
/**
|
|
* Given "str" is holding a string allocated with NS_Alloc, or null:
|
|
* replace the value in "str" with a new value.
|
|
*
|
|
* @param newvalue Null is permitted. The string is cloned with
|
|
* NS_strdup
|
|
*/
|
|
void SetAllocatedString(const char *&str, const char *newvalue);
|
|
|
|
/**
|
|
* Given "str" is holding a string allocated with NS_Alloc, or null:
|
|
* replace the value in "str" with a new value.
|
|
*
|
|
* @param newvalue If "newvalue" is the empty string, "str" will be set
|
|
* to null.
|
|
*/
|
|
void SetAllocatedString(const char *&str, const nsACString &newvalue);
|
|
|
|
template<class T>
|
|
void SetStrongPtr(T *&ptr, T* newvalue)
|
|
{
|
|
NS_IF_RELEASE(ptr);
|
|
ptr = newvalue;
|
|
NS_IF_ADDREF(ptr);
|
|
}
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif
|