RetroZilla/extensions/transformiix/source/xslt/functions/GenerateIdFunctionCall.cpp
2015-10-20 23:03:22 -04:00

117 lines
3.6 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is TransforMiiX XSLT processor code.
*
* The Initial Developer of the Original Code is
* Keith Visco.
* Portions created by the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "ExprResult.h"
#include "txAtoms.h"
#include "txIXPathContext.h"
#include "txNodeSet.h"
#include "XSLTFunctions.h"
/*
Implementation of XSLT 1.0 extension function: generate-id
*/
/**
* Creates a new generate-id function call
**/
GenerateIdFunctionCall::GenerateIdFunctionCall()
{
}
/**
* Evaluates this Expr based on the given context node and processor state
* @param context the context node for evaluation of this Expr
* @param ps the ContextState containing the stack information needed
* for evaluation
* @return the result of the evaluation
* @see FunctionCall.h
**/
nsresult
GenerateIdFunctionCall::evaluate(txIEvalContext* aContext,
txAExprResult** aResult)
{
*aResult = nsnull;
if (!requireParams(0, 1, aContext))
return NS_ERROR_XPATH_BAD_ARGUMENT_COUNT;
nsresult rv = NS_OK;
if (params.getLength() != 1) {
StringResult* strRes;
rv = aContext->recycler()->getStringResult(&strRes);
NS_ENSURE_SUCCESS(rv, rv);
txXPathNodeUtils::getXSLTId(aContext->getContextNode(),
strRes->mValue);
*aResult = strRes;
return NS_OK;
}
txListIterator iter(&params);
nsRefPtr<txNodeSet> nodes;
rv = evaluateToNodeSet(NS_STATIC_CAST(Expr*, iter.next()), aContext,
getter_AddRefs(nodes));
NS_ENSURE_SUCCESS(rv, rv);
if (nodes->isEmpty()) {
aContext->recycler()->getEmptyStringResult(aResult);
return NS_OK;
}
StringResult* strRes;
rv = aContext->recycler()->getStringResult(&strRes);
NS_ENSURE_SUCCESS(rv, rv);
txXPathNodeUtils::getXSLTId(nodes->get(0), strRes->mValue);
*aResult = strRes;
return NS_OK;
}
#ifdef TX_TO_STRING
nsresult
GenerateIdFunctionCall::getNameAtom(nsIAtom** aAtom)
{
*aAtom = txXSLTAtoms::generateId;
NS_ADDREF(*aAtom);
return NS_OK;
}
#endif