1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/xslt/xpath/txVariableRefExpr.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,69 @@
1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "txExpr.h"
1.10 +#include "nsIAtom.h"
1.11 +#include "txNodeSet.h"
1.12 +#include "nsGkAtoms.h"
1.13 +#include "txIXPathContext.h"
1.14 +
1.15 + //-------------------/
1.16 + //- VariableRefExpr -/
1.17 +//-------------------/
1.18 +
1.19 +/**
1.20 + * Creates a VariableRefExpr with the given variable name
1.21 +**/
1.22 +VariableRefExpr::VariableRefExpr(nsIAtom* aPrefix, nsIAtom* aLocalName,
1.23 + int32_t aNSID)
1.24 + : mPrefix(aPrefix), mLocalName(aLocalName), mNamespace(aNSID)
1.25 +{
1.26 + NS_ASSERTION(mLocalName, "VariableRefExpr without local name?");
1.27 + if (mPrefix == nsGkAtoms::_empty)
1.28 + mPrefix = 0;
1.29 +}
1.30 +
1.31 +/**
1.32 + * Evaluates this Expr based on the given context node and processor state
1.33 + * @param context the context node for evaluation of this Expr
1.34 + * @param ps the ContextState containing the stack information needed
1.35 + * for evaluation
1.36 + * @return the result of the evaluation
1.37 +**/
1.38 +nsresult
1.39 +VariableRefExpr::evaluate(txIEvalContext* aContext, txAExprResult** aResult)
1.40 +{
1.41 + nsresult rv = aContext->getVariable(mNamespace, mLocalName, *aResult);
1.42 + if (NS_FAILED(rv)) {
1.43 + // XXX report error, undefined variable
1.44 + return rv;
1.45 + }
1.46 + return NS_OK;
1.47 +}
1.48 +
1.49 +TX_IMPL_EXPR_STUBS_0(VariableRefExpr, ANY_RESULT)
1.50 +
1.51 +bool
1.52 +VariableRefExpr::isSensitiveTo(ContextSensitivity aContext)
1.53 +{
1.54 + return !!(aContext & VARIABLES_CONTEXT);
1.55 +}
1.56 +
1.57 +#ifdef TX_TO_STRING
1.58 +void
1.59 +VariableRefExpr::toString(nsAString& aDest)
1.60 +{
1.61 + aDest.Append(char16_t('$'));
1.62 + if (mPrefix) {
1.63 + nsAutoString prefix;
1.64 + mPrefix->ToString(prefix);
1.65 + aDest.Append(prefix);
1.66 + aDest.Append(char16_t(':'));
1.67 + }
1.68 + nsAutoString lname;
1.69 + mLocalName->ToString(lname);
1.70 + aDest.Append(lname);
1.71 +}
1.72 +#endif
