101 lines
2.6 KiB
C++
101 lines
2.6 KiB
C++
/*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is XSL:P XSLT processor.
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*
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* The Initial Developer of the Original Code is Keith Visco.
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* Portions created by Keith Visco (C) 1999, 2000 Keith Visco.
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* All Rights Reserved.
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*
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* Contributor(s):
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*
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* Keith Visco, kvisco@ziplink.net
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* -- original author.
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*
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*/
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#include "ExprResult.h"
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#include "txAtoms.h"
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#include "txIXPathContext.h"
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#include "txNodeSet.h"
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#include "XSLTFunctions.h"
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/*
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Implementation of XSLT 1.0 extension function: generate-id
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*/
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/**
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* Creates a new generate-id function call
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**/
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GenerateIdFunctionCall::GenerateIdFunctionCall()
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{
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}
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/**
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* Evaluates this Expr based on the given context node and processor state
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* @param context the context node for evaluation of this Expr
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* @param ps the ContextState containing the stack information needed
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* for evaluation
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* @return the result of the evaluation
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* @see FunctionCall.h
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**/
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nsresult
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GenerateIdFunctionCall::evaluate(txIEvalContext* aContext,
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txAExprResult** aResult)
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{
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*aResult = nsnull;
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if (!requireParams(0, 1, aContext))
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return NS_ERROR_XPATH_BAD_ARGUMENT_COUNT;
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nsresult rv = NS_OK;
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if (params.getLength() != 1) {
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StringResult* strRes;
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rv = aContext->recycler()->getStringResult(&strRes);
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NS_ENSURE_SUCCESS(rv, rv);
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txXPathNodeUtils::getXSLTId(aContext->getContextNode(),
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strRes->mValue);
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*aResult = strRes;
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return NS_OK;
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}
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txListIterator iter(¶ms);
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nsRefPtr<txNodeSet> nodes;
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rv = evaluateToNodeSet(NS_STATIC_CAST(Expr*, iter.next()), aContext,
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getter_AddRefs(nodes));
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NS_ENSURE_SUCCESS(rv, rv);
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if (nodes->isEmpty()) {
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aContext->recycler()->getEmptyStringResult(aResult);
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return NS_OK;
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}
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StringResult* strRes;
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rv = aContext->recycler()->getStringResult(&strRes);
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NS_ENSURE_SUCCESS(rv, rv);
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txXPathNodeUtils::getXSLTId(nodes->get(0), strRes->mValue);
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*aResult = strRes;
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return NS_OK;
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}
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nsresult GenerateIdFunctionCall::getNameAtom(nsIAtom** aAtom)
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{
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*aAtom = txXSLTAtoms::generateId;
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NS_ADDREF(*aAtom);
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return NS_OK;
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}
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