1 /*

     2  * Copyright 2005 Frerich Raabe <raabe@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 "XPathEvaluator.h"

    29 

    30 #if ENABLE(XPATH)

    31 

    32 #include "ExceptionCode.h"

    33 #include "NativeXPathNSResolver.h"

    34 #include "Node.h"

    35 #include "XPathExpression.h"

    36 #include "XPathResult.h"

    37 #include "XPathUtil.h"

    38 

    39 namespace WebCore {

    40 

    41 using namespace XPath;

    42     

    43 PassRefPtr<XPathExpression> XPathEvaluator::createExpression(const String& expression,

    44                                                              XPathNSResolver* resolver,

    45                                                              ExceptionCode& ec)

    46 {

    47     return XPathExpression::createExpression(expression, resolver, ec);

    48 }

    49 

    50 PassRefPtr<XPathNSResolver> XPathEvaluator::createNSResolver(Node* nodeResolver)

    51 {

    52     return NativeXPathNSResolver::create(nodeResolver);

    53 }

    54 

    55 PassRefPtr<XPathResult> XPathEvaluator::evaluate(const String& expression,

    56                                                  Node* contextNode,

    57                                                  XPathNSResolver* resolver,

    58                                                  unsigned short type,

    59                                                  XPathResult* result,

    60                                                  ExceptionCode& ec)

    61 {

    62     if (!isValidContextNode(contextNode)) {

    63         ec = NOT_SUPPORTED_ERR;

    64         return 0;

    65     }

    66 

    67     ec = 0;

    68     RefPtr<XPathExpression> expr = createExpression(expression, resolver, ec);

    69     if (ec)

    70         return 0;

    71     

    72     return expr->evaluate(contextNode, type, result, ec);

    73 }

    74 

    75 }

    76 

    77 #endif // ENABLE(XPATH)