gecko-dev/xpcom/ds/nsSupportsArray.h

143 lines
4.3 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 nsSupportsArray_h__
#define nsSupportsArray_h__
//#define DEBUG_SUPPORTSARRAY 1
#include "nsISupportsArray.h"
#include "mozilla/Attributes.h"
static const uint32_t kAutoArraySize = 8;
class nsSupportsArray final : public nsISupportsArray
{
~nsSupportsArray(void); // nonvirtual since we're not subclassed
public:
nsSupportsArray(void);
static nsresult Create(nsISupports* aOuter, REFNSIID aIID, void** aResult);
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSISERIALIZABLE
// nsICollection methods:
NS_IMETHOD Count(uint32_t* aResult) override
{
*aResult = mCount;
return NS_OK;
}
NS_IMETHOD GetElementAt(uint32_t aIndex, nsISupports** aResult) override;
NS_IMETHOD QueryElementAt(uint32_t aIndex, const nsIID& aIID, void** aResult) override
{
if (aIndex < mCount) {
nsISupports* element = mArray[aIndex];
if (element) {
return element->QueryInterface(aIID, aResult);
}
}
return NS_ERROR_FAILURE;
}
NS_IMETHOD SetElementAt(uint32_t aIndex, nsISupports* aValue) override
{
return ReplaceElementAt(aValue, aIndex) ? NS_OK : NS_ERROR_FAILURE;
}
NS_IMETHOD AppendElement(nsISupports* aElement) override
{
// XXX Invalid cast of bool to nsresult (bug 778110)
return (nsresult)InsertElementAt(aElement, mCount)/* ? NS_OK : NS_ERROR_FAILURE*/;
}
// XXX this is badly named - should be RemoveFirstElement
NS_IMETHOD RemoveElement(nsISupports* aElement) override;
NS_IMETHOD_(bool) MoveElement(int32_t aFrom, int32_t aTo) override;
NS_IMETHOD Enumerate(nsIEnumerator** aResult) override;
NS_IMETHOD Clear(void) override;
// nsISupportsArray methods:
NS_IMETHOD_(bool) Equals(const nsISupportsArray* aOther) override;
NS_IMETHOD_(int32_t) IndexOf(const nsISupports* aPossibleElement) override;
NS_IMETHOD_(int32_t) IndexOfStartingAt(const nsISupports* aPossibleElement,
uint32_t aStartIndex = 0) override;
NS_IMETHOD_(int32_t) LastIndexOf(const nsISupports* aPossibleElement) override;
NS_IMETHOD GetIndexOf(nsISupports* aPossibleElement, int32_t* aResult) override
{
*aResult = IndexOf(aPossibleElement);
return NS_OK;
}
NS_IMETHOD GetIndexOfStartingAt(nsISupports* aPossibleElement,
uint32_t aStartIndex, int32_t* aResult) override
{
*aResult = IndexOfStartingAt(aPossibleElement, aStartIndex);
return NS_OK;
}
NS_IMETHOD GetLastIndexOf(nsISupports* aPossibleElement, int32_t* aResult) override
{
*aResult = LastIndexOf(aPossibleElement);
return NS_OK;
}
NS_IMETHOD_(bool) InsertElementAt(nsISupports* aElement, uint32_t aIndex) override;
NS_IMETHOD_(bool) ReplaceElementAt(nsISupports* aElement, uint32_t aIndex) override;
NS_IMETHOD_(bool) RemoveElementAt(uint32_t aIndex) override
{
return RemoveElementsAt(aIndex, 1);
}
NS_IMETHOD_(bool) RemoveLastElement(const nsISupports* aElement) override;
NS_IMETHOD DeleteLastElement(nsISupports* aElement) override
{
return (RemoveLastElement(aElement) ? NS_OK : NS_ERROR_FAILURE);
}
NS_IMETHOD DeleteElementAt(uint32_t aIndex) override
{
return (RemoveElementAt(aIndex) ? NS_OK : NS_ERROR_FAILURE);
}
NS_IMETHOD_(bool) AppendElements(nsISupportsArray* aElements) override
{
return InsertElementsAt(aElements, mCount);
}
NS_IMETHOD Compact(void) override;
NS_IMETHOD Clone(nsISupportsArray** aResult) override;
NS_IMETHOD_(bool) InsertElementsAt(nsISupportsArray* aOther,
uint32_t aIndex) override;
NS_IMETHOD_(bool) RemoveElementsAt(uint32_t aIndex, uint32_t aCount) override;
NS_IMETHOD_(bool) SizeTo(int32_t aSize) override;
protected:
void DeleteArray(void);
void GrowArrayBy(int32_t aGrowBy);
nsISupports** mArray;
uint32_t mArraySize;
uint32_t mCount;
nsISupports* mAutoArray[kAutoArraySize];
#if DEBUG_SUPPORTSARRAY
uint32_t mMaxCount;
uint32_t mMaxSize;
#endif
private:
// Copy constructors are not allowed
explicit nsSupportsArray(const nsISupportsArray& aOther);
};
#endif // nsSupportsArray_h__