DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

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/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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 "nsISupports.idl"

interface nsIRDFResource;
interface nsIRDFNode;

/**
 * Interface used in RDF to enumerate triples.
 * Also used by rdfIDataSource::getAllSubjects, then aPredicate,
 * aObject and aTruthValue are ignored.
 *
 * @status PLASMA
 */

[scriptable, function, uuid(aafea151-c271-4505-9978-a100d292800c)]
interface rdfITripleVisitor : nsISupports
{
    /**
     * Callback function for returning query results.
     *
     * @param aSubject, aPredicate, aObject describe the (sub-)arc
     * @returnCode NS_RDF_STOP_VISIT to stop iterating over the query result.
     *             Any error code will stop the iteration as well.
     */
    void visit(in nsIRDFNode aSubject, in nsIRDFResource aPredicate,
               in nsIRDFNode aObject, in boolean aTruthValue);
};