DOMNodeIterator.mm   [plain text]

/*
* Copyright (C) 2004-2016 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#import "DOMInternal.h"

#import "DOMNodeIterator.h"

#import "DOMNodeInternal.h"
#import "DOMNodeIteratorInternal.h"
#import "ExceptionHandlers.h"
#import <WebCore/JSExecState.h>
#import <WebCore/NativeNodeFilter.h>
#import <WebCore/Node.h>
#import <WebCore/NodeIterator.h>
#import "ObjCNodeFilterCondition.h"
#import <WebCore/ThreadCheck.h>
#import <WebCore/WebCoreObjCExtras.h>
#import <WebCore/WebScriptObjectPrivate.h>
#import <wtf/GetPtr.h>

#define IMPL reinterpret_cast<WebCore::NodeIterator*>(_internal)

@implementation DOMNodeIterator

- (void)dealloc
{
if (WebCoreObjCScheduleDeallocateOnMainThread([DOMNodeIterator class], self))
return;

if (_internal) {
[self detach];
IMPL->deref();
};
[super dealloc];
}

- (DOMNode *)root
{
WebCore::JSMainThreadNullState state;
return kit(WTF::getPtr(IMPL->root()));
}

- (unsigned)whatToShow
{
WebCore::JSMainThreadNullState state;
return IMPL->whatToShow();
}

- (id <DOMNodeFilter>)filter
{
WebCore::JSMainThreadNullState state;
return kit(IMPL->filter());
}

- (BOOL)expandEntityReferences
{
return NO;
}

- (DOMNode *)referenceNode
{
WebCore::JSMainThreadNullState state;
return kit(WTF::getPtr(IMPL->referenceNode()));
}

- (BOOL)pointerBeforeReferenceNode
{
WebCore::JSMainThreadNullState state;
return IMPL->pointerBeforeReferenceNode();
}

- (DOMNode *)nextNode
{
WebCore::JSMainThreadNullState state;

auto result = IMPL->nextNode();
if (result.hasException())
return nil;

return kit(WTF::getPtr(result.releaseReturnValue()));
}

- (DOMNode *)previousNode
{
WebCore::JSMainThreadNullState state;

auto result = IMPL->previousNode();
if (result.hasException())
return nil;

return kit(WTF::getPtr(result.releaseReturnValue()));
}

- (void)detach
{
WebCore::JSMainThreadNullState state;
IMPL->detach();
}

@end

DOMNodeIterator *kit(WebCore::NodeIterator* value)
{
WebCoreThreadViolationCheckRoundOne();
if (!value)
return nil;
if (DOMNodeIterator *wrapper = getDOMWrapper(value))
return [[wrapper retain] autorelease];
DOMNodeIterator *wrapper = [[DOMNodeIterator alloc] _init];
wrapper->_internal = reinterpret_cast<DOMObjectInternal*>(value);
value->ref();
addDOMWrapper(wrapper, value);
return [wrapper autorelease];
}