dom/xslt/xpath/txErrorExpr.cpp

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "nsError.h"
   7 #include "txExpr.h"
   8 #include "nsString.h"
   9 #include "txIXPathContext.h"
  10
  11 nsresult txErrorExpr::evaluate(txIEvalContext* aContext,
  12                                txAExprResult** aResult) {
  13   *aResult = nullptr;
  14
  15   nsAutoString err(u"Invalid expression evaluated"_ns);
  16 #ifdef TX_TO_STRING
  17   err.AppendLiteral(": ");
  18   toString(err);
  19 #endif
  20   aContext->receiveError(err, NS_ERROR_XPATH_INVALID_EXPRESSION_EVALUATED);
  21
  22   return NS_ERROR_XPATH_INVALID_EXPRESSION_EVALUATED;
  23 }
  24
  25 TX_IMPL_EXPR_STUBS_0(txErrorExpr, ANY_RESULT)
  26
  27 bool txErrorExpr::isSensitiveTo(ContextSensitivity aContext) {
  28   // It doesn't really matter what we return here, but it might
  29   // be a good idea to try to keep this as unoptimizable as possible
  30   return true;
  31 }
  32
  33 #ifdef TX_TO_STRING
  34 void txErrorExpr::toString(nsAString& aStr) { aStr.Append(mStr); }
  35 #endif