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/*
 * Bytecode Analysis Framework
 * Copyright (C) 2003,2004 University of Maryland
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package edu.umd.cs.findbugs.ba;

public class DFSCFGPrinter extends CFGPrinter implements DFSEdgeTypes {
    private final DepthFirstSearch dfs;

    public DFSCFGPrinter(CFG cfg, DepthFirstSearch dfs) {
        super(cfg);
        this.dfs = dfs;
    }

    @Override
    public String edgeAnnotate(Edge edge) {
        int dfsEdgeType = dfs.getDFSEdgeType(edge);
        switch (dfsEdgeType) {
        case UNKNOWN_EDGE:
            return "UNKNOWN_EDGE";
        case TREE_EDGE:
            return "TREE_EDGE";
        case BACK_EDGE:
            return "BACK_EDGE";
        case CROSS_EDGE:
            return "CROSS_EDGE";
        case FORWARD_EDGE:
            return "FORWARD_EDGE";
        default:
            throw new IllegalStateException("no DFS edge type?");
        }
    }
}