mirror of
https://github.com/classilla/tenfourfox.git
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95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "txExpr.h"
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#include "txIXPathContext.h"
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#include "txNodeSet.h"
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//-------------/
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//- UnionExpr -/
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//-------------/
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//-----------------------------/
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//- Virtual methods from Expr -/
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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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UnionExpr::evaluate(txIEvalContext* aContext, txAExprResult** aResult)
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{
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*aResult = nullptr;
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RefPtr<txNodeSet> nodes;
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nsresult rv = aContext->recycler()->getNodeSet(getter_AddRefs(nodes));
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NS_ENSURE_SUCCESS(rv, rv);
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uint32_t i, len = mExpressions.Length();
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for (i = 0; i < len; ++i) {
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RefPtr<txAExprResult> exprResult;
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rv = mExpressions[i]->evaluate(aContext, getter_AddRefs(exprResult));
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NS_ENSURE_SUCCESS(rv, rv);
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if (exprResult->getResultType() != txAExprResult::NODESET) {
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//XXX ErrorReport: report nonnodeset error
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return NS_ERROR_XSLT_NODESET_EXPECTED;
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}
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RefPtr<txNodeSet> resultSet, ownedSet;
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resultSet = static_cast<txNodeSet*>
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(static_cast<txAExprResult*>(exprResult));
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exprResult = nullptr;
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rv = aContext->recycler()->
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getNonSharedNodeSet(resultSet, getter_AddRefs(ownedSet));
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NS_ENSURE_SUCCESS(rv, rv);
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rv = nodes->addAndTransfer(ownedSet);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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*aResult = nodes;
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NS_ADDREF(*aResult);
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return NS_OK;
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} //-- evaluate
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Expr::ExprType
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UnionExpr::getType()
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{
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return UNION_EXPR;
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}
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TX_IMPL_EXPR_STUBS_LIST(UnionExpr, NODESET_RESULT, mExpressions)
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bool
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UnionExpr::isSensitiveTo(ContextSensitivity aContext)
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{
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uint32_t i, len = mExpressions.Length();
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for (i = 0; i < len; ++i) {
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if (mExpressions[i]->isSensitiveTo(aContext)) {
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return true;
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}
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}
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return false;
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}
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#ifdef TX_TO_STRING
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void
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UnionExpr::toString(nsAString& dest)
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{
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uint32_t i;
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for (i = 0; i < mExpressions.Length(); ++i) {
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if (i > 0)
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dest.AppendLiteral(" | ");
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mExpressions[i]->toString(dest);
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}
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}
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#endif
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