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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "txExpr.h"
#include "txIXPathContext.h"
#include "txNodeSet.h"
#ifdef TX_TO_STRING
# include "nsReadableUtils.h"
#endif
//-------------/
//- UnionExpr -/
//-------------/
//-----------------------------/
//- Virtual methods from Expr -/
//-----------------------------/
/**
* 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
**/
nsresult UnionExpr::evaluate(txIEvalContext* aContext,
txAExprResult** aResult) {
*aResult = nullptr;
RefPtr<txNodeSet> nodes;
nsresult rv = aContext->recycler()->getNodeSet(getter_AddRefs(nodes));
NS_ENSURE_SUCCESS(rv, rv);
uint32_t i, len = mExpressions.Length();
for (i = 0; i < len; ++i) {
RefPtr<txAExprResult> exprResult;
rv = mExpressions[i]->evaluate(aContext, getter_AddRefs(exprResult));
NS_ENSURE_SUCCESS(rv, rv);
if (exprResult->getResultType() != txAExprResult::NODESET) {
// XXX ErrorReport: report nonnodeset error
return NS_ERROR_XSLT_NODESET_EXPECTED;
}
RefPtr<txNodeSet> resultSet, ownedSet;
resultSet =
static_cast<txNodeSet*>(static_cast<txAExprResult*>(exprResult));
exprResult = nullptr;
rv = aContext->recycler()->getNonSharedNodeSet(resultSet,
getter_AddRefs(ownedSet));
NS_ENSURE_SUCCESS(rv, rv);
rv = nodes->addAndTransfer(ownedSet);
NS_ENSURE_SUCCESS(rv, rv);
}
*aResult = nodes;
NS_ADDREF(*aResult);
return NS_OK;
} //-- evaluate
Expr::ExprType UnionExpr::getType() { return UNION_EXPR; }
TX_IMPL_EXPR_STUBS_LIST(UnionExpr, NODESET_RESULT, mExpressions)
bool UnionExpr::isSensitiveTo(ContextSensitivity aContext) {
uint32_t i, len = mExpressions.Length();
for (i = 0; i < len; ++i) {
if (mExpressions[i]->isSensitiveTo(aContext)) {
return true;
}
}
return false;
}
#ifdef TX_TO_STRING
void UnionExpr::toString(nsAString& aDest) {
StringJoinAppend(aDest, u" | "_ns, mExpressions,
[](nsAString& dest, Expr* expr) { expr->toString(dest); });
}
#endif
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