1 /* 2 * Copyright 2005 Frerich Raabe <raabe (at) kde.org> 3 * Copyright (C) 2006 Apple Computer, Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include "config.h" 28 #include "core/xml/XPathEvaluator.h" 29 30 #include "bindings/core/v8/ExceptionState.h" 31 #include "core/dom/ExceptionCode.h" 32 #include "core/dom/Node.h" 33 #include "core/xml/NativeXPathNSResolver.h" 34 #include "core/xml/XPathExpression.h" 35 #include "core/xml/XPathResult.h" 36 #include "core/xml/XPathUtil.h" 37 38 namespace blink { 39 40 using namespace XPath; 41 42 PassRefPtrWillBeRawPtr<XPathExpression> XPathEvaluator::createExpression(const String& expression, PassRefPtrWillBeRawPtr<XPathNSResolver> resolver, ExceptionState& exceptionState) 43 { 44 return XPathExpression::createExpression(expression, resolver, exceptionState); 45 } 46 47 PassRefPtrWillBeRawPtr<XPathNSResolver> XPathEvaluator::createNSResolver(Node* nodeResolver) 48 { 49 return NativeXPathNSResolver::create(nodeResolver); 50 } 51 52 PassRefPtrWillBeRawPtr<XPathResult> XPathEvaluator::evaluate(const String& expression, Node* contextNode, 53 PassRefPtrWillBeRawPtr<XPathNSResolver> resolver, unsigned short type, XPathResult* result, ExceptionState& exceptionState) 54 { 55 if (!contextNode) { 56 exceptionState.throwDOMException(NotSupportedError, "The context node provided is null."); 57 return nullptr; 58 } 59 60 if (!isValidContextNode(contextNode)) { 61 exceptionState.throwDOMException(NotSupportedError, "The node provided is '" + contextNode->nodeName() + "', which is not a valid context node type."); 62 return nullptr; 63 } 64 65 RefPtrWillBeRawPtr<XPathExpression> expr = createExpression(expression, resolver, exceptionState); 66 if (exceptionState.hadException()) 67 return nullptr; 68 69 return expr->evaluate(contextNode, type, result, exceptionState); 70 } 71 72 } 73