mirror of
https://github.com/rn10950/RetroZilla.git
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280 lines
9.2 KiB
C++
280 lines
9.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is TransforMiiX XSLT processor code.
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*
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* The Initial Developer of the Original Code is
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* The MITRE Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Keith Visco <kvisco@ziplink.net> (Original Author)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* NodeSetFunctionCall
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* A representation of the XPath NodeSet funtions
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*/
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#include "FunctionLib.h"
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#include "nsAutoPtr.h"
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#include "txNodeSet.h"
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#include "txAtoms.h"
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#include "txIXPathContext.h"
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#include "txTokenizer.h"
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/*
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* Creates a NodeSetFunctionCall of the given type
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*/
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NodeSetFunctionCall::NodeSetFunctionCall(NodeSetFunctions aType)
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: mType(aType)
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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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*/
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nsresult
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NodeSetFunctionCall::evaluate(txIEvalContext* aContext, txAExprResult** aResult)
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{
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*aResult = nsnull;
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nsresult rv = NS_OK;
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txListIterator iter(¶ms);
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switch (mType) {
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case COUNT:
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{
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if (!requireParams(1, 1, aContext))
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return NS_ERROR_XPATH_BAD_ARGUMENT_COUNT;
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nsRefPtr<txNodeSet> nodes;
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rv = evaluateToNodeSet((Expr*)iter.next(), aContext,
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getter_AddRefs(nodes));
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NS_ENSURE_SUCCESS(rv, rv);
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return aContext->recycler()->getNumberResult(nodes->size(),
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aResult);
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}
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case ID:
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{
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if (!requireParams(1, 1, aContext))
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return NS_ERROR_XPATH_BAD_ARGUMENT_COUNT;
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nsRefPtr<txAExprResult> exprResult;
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rv = ((Expr*)iter.next())->evaluate(aContext,
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getter_AddRefs(exprResult));
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NS_ENSURE_SUCCESS(rv, rv);
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nsRefPtr<txNodeSet> resultSet;
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rv = aContext->recycler()->getNodeSet(getter_AddRefs(resultSet));
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NS_ENSURE_SUCCESS(rv, rv);
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txXPathTreeWalker walker(aContext->getContextNode());
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if (exprResult->getResultType() == txAExprResult::NODESET) {
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txNodeSet* nodes = NS_STATIC_CAST(txNodeSet*,
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NS_STATIC_CAST(txAExprResult*,
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exprResult));
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PRInt32 i;
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for (i = 0; i < nodes->size(); ++i) {
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nsAutoString idList;
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txXPathNodeUtils::appendNodeValue(nodes->get(i), idList);
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txTokenizer tokenizer(idList);
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while (tokenizer.hasMoreTokens()) {
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if (walker.moveToElementById(tokenizer.nextToken())) {
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resultSet->add(walker.getCurrentPosition());
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}
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}
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}
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}
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else {
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nsAutoString idList;
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exprResult->stringValue(idList);
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txTokenizer tokenizer(idList);
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while (tokenizer.hasMoreTokens()) {
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if (walker.moveToElementById(tokenizer.nextToken())) {
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resultSet->add(walker.getCurrentPosition());
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}
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}
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}
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*aResult = resultSet;
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NS_ADDREF(*aResult);
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return NS_OK;
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}
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case LAST:
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{
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if (!requireParams(0, 0, aContext))
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return NS_ERROR_XPATH_BAD_ARGUMENT_COUNT;
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return aContext->recycler()->getNumberResult(aContext->size(),
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aResult);
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}
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case LOCAL_NAME:
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case NAME:
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case NAMESPACE_URI:
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{
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if (!requireParams(0, 1, aContext)) {
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return NS_ERROR_XPATH_BAD_ARGUMENT_COUNT;
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}
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// Check for optional arg
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nsRefPtr<txNodeSet> nodes;
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if (iter.hasNext()) {
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rv = evaluateToNodeSet((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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}
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const txXPathNode& node = nodes ? nodes->get(0) :
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aContext->getContextNode();
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switch (mType) {
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case LOCAL_NAME:
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{
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StringResult* strRes = nsnull;
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rv = aContext->recycler()->getStringResult(&strRes);
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NS_ENSURE_SUCCESS(rv, rv);
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*aResult = strRes;
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txXPathNodeUtils::getLocalName(node, strRes->mValue);
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return NS_OK;
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}
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case NAMESPACE_URI:
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{
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StringResult* strRes = nsnull;
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rv = aContext->recycler()->getStringResult(&strRes);
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NS_ENSURE_SUCCESS(rv, rv);
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*aResult = strRes;
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txXPathNodeUtils::getNamespaceURI(node, strRes->mValue);
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return NS_OK;
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}
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case NAME:
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{
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// XXX Namespace: namespaces have a name
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if (txXPathNodeUtils::isAttribute(node) ||
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txXPathNodeUtils::isElement(node) ||
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txXPathNodeUtils::isProcessingInstruction(node)) {
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StringResult* strRes = nsnull;
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rv = aContext->recycler()->getStringResult(&strRes);
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NS_ENSURE_SUCCESS(rv, rv);
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*aResult = strRes;
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txXPathNodeUtils::getNodeName(node, strRes->mValue);
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}
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else {
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aContext->recycler()->getEmptyStringResult(aResult);
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}
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return NS_OK;
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}
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default:
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{
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break;
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}
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}
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}
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case POSITION:
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{
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if (!requireParams(0, 0, aContext))
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return NS_ERROR_XPATH_BAD_ARGUMENT_COUNT;
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return aContext->recycler()->getNumberResult(aContext->position(),
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aResult);
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}
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}
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aContext->receiveError(NS_LITERAL_STRING("Internal error"),
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NS_ERROR_UNEXPECTED);
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return NS_ERROR_UNEXPECTED;
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}
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#ifdef TX_TO_STRING
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nsresult
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NodeSetFunctionCall::getNameAtom(nsIAtom** aAtom)
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{
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switch (mType) {
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case COUNT:
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{
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*aAtom = txXPathAtoms::count;
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break;
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}
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case ID:
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{
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*aAtom = txXPathAtoms::id;
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break;
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}
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case LAST:
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{
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*aAtom = txXPathAtoms::last;
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break;
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}
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case LOCAL_NAME:
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{
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*aAtom = txXPathAtoms::localName;
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break;
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}
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case NAME:
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{
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*aAtom = txXPathAtoms::name;
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break;
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}
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case NAMESPACE_URI:
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{
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*aAtom = txXPathAtoms::namespaceUri;
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break;
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}
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case POSITION:
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{
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*aAtom = txXPathAtoms::position;
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break;
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}
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default:
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{
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*aAtom = 0;
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return NS_ERROR_FAILURE;
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}
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}
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NS_ADDREF(*aAtom);
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return NS_OK;
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}
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#endif
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