001/**
002 * Logback: the reliable, generic, fast and flexible logging framework.
003 * Copyright (C) 1999-2022, QOS.ch. All rights reserved.
004 *
005 * This program and the accompanying materials are dual-licensed under
006 * either the terms of the Eclipse Public License v1.0 as published by
007 * the Eclipse Foundation
008 *
009 *   or (per the licensee's choosing)
010 *
011 * under the terms of the GNU Lesser General Public License version 2.1
012 * as published by the Free Software Foundation.
013 */
014package ch.qos.logback.core.model.processor;
015
016import ch.qos.logback.core.Context;
017import ch.qos.logback.core.model.AppenderRefModel;
018import ch.qos.logback.core.model.Model;
019
020@PhaseIndicator(phase = ProcessingPhase.DEPENDENCY_ANALYSIS)
021public class AppenderRefDependencyAnalyser extends ModelHandlerBase {
022
023    public AppenderRefDependencyAnalyser(Context context) {
024        super(context);
025    }
026
027    @Override
028    protected Class<AppenderRefModel> getSupportedModelClass() {
029        return AppenderRefModel.class;
030    }
031
032    @Override
033    public void handle(ModelInterpretationContext mic, Model model) throws ModelHandlerException {
034
035        AppenderRefModel appenderRefModel = (AppenderRefModel) model;
036
037        String ref = mic.subst(appenderRefModel.getRef());
038
039        Model depender;
040        if (mic.isModelStackEmpty()) {
041            // appenderRefModel maybe the dependent model. This is the case in logback-access
042            depender = appenderRefModel;
043        } else {
044            Model parentModel = mic.peekModel();
045            depender = parentModel;
046        }
047
048        DependencyDefinition dd = new DependencyDefinition(depender, ref);
049        mic.addDependencyDefinition(dd);
050        
051    }
052
053}