michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "txExpr.h"
michael@0: #include "txNodeSet.h"
michael@0: #include "txIXPathContext.h"
michael@0: #include "txXPathTreeWalker.h"
michael@0: 
michael@0: /**
michael@0:  * Evaluates this Expr based on the given context node and processor state
michael@0:  * @param context the context node for evaluation of this Expr
michael@0:  * @param ps the ContextState containing the stack information needed
michael@0:  * for evaluation
michael@0:  * @return the result of the evaluation
michael@0: **/
michael@0: nsresult
michael@0: RootExpr::evaluate(txIEvalContext* aContext, txAExprResult** aResult)
michael@0: {
michael@0:     txXPathTreeWalker walker(aContext->getContextNode());
michael@0:     walker.moveToRoot();
michael@0:     
michael@0:     return aContext->recycler()->getNodeSet(walker.getCurrentPosition(),
michael@0:                                             aResult);
michael@0: }
michael@0: 
michael@0: TX_IMPL_EXPR_STUBS_0(RootExpr, NODESET_RESULT)
michael@0: 
michael@0: bool
michael@0: RootExpr::isSensitiveTo(ContextSensitivity aContext)
michael@0: {
michael@0:     return !!(aContext & NODE_CONTEXT);
michael@0: }
michael@0: 
michael@0: #ifdef TX_TO_STRING
michael@0: void
michael@0: RootExpr::toString(nsAString& dest)
michael@0: {
michael@0:     if (mSerialize)
michael@0:         dest.Append(char16_t('/'));
michael@0: }
michael@0: #endif