/* -*- 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 "nsError.h"
#include "txExpr.h"
#include "nsString.h"
#include "txIXPathContext.h"

nsresult txErrorExpr::evaluate(txIEvalContext* aContext,
                               txAExprResult** aResult) {
  *aResult = nullptr;

  nsAutoString err(u"Invalid expression evaluated"_ns);
#ifdef TX_TO_STRING
  err.AppendLiteral(": ");
  toString(err);
#endif
  aContext->receiveError(err, NS_ERROR_XPATH_INVALID_EXPRESSION_EVALUATED);

  return NS_ERROR_XPATH_INVALID_EXPRESSION_EVALUATED;
}

TX_IMPL_EXPR_STUBS_0(txErrorExpr, ANY_RESULT)

bool txErrorExpr::isSensitiveTo(ContextSensitivity aContext) {
  // It doesn't really matter what we return here, but it might
  // be a good idea to try to keep this as unoptimizable as possible
  return true;
}

#ifdef TX_TO_STRING
void txErrorExpr::toString(nsAString& aStr) { aStr.Append(mStr); }
#endif
