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/*
 * FindBugs - Find bugs in Java programs
 * 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;

import java.util.IdentityHashMap;

import org.apache.bcel.classfile.Method;

import edu.umd.cs.findbugs.graph.AbstractGraph;

public class CallGraph extends AbstractGraph {
    private final IdentityHashMap methodToNodeMap;

    public CallGraph() {
        this.methodToNodeMap = new IdentityHashMap<>();
    }

    public CallGraphEdge createEdge(CallGraphNode source, CallGraphNode target, CallSite callSite) {
        CallGraphEdge edge = createEdge(source, target);
        edge.setCallSite(callSite);
        return edge;
    }

    public CallGraphNode addNode(Method method) {
        CallGraphNode node = new CallGraphNode();
        addVertex(node);
        node.setMethod(method);
        methodToNodeMap.put(method, node);
        return node;
    }

    public CallGraphNode getNodeForMethod(Method method) {
        return methodToNodeMap.get(method);
    }

    @Override
    protected CallGraphEdge allocateEdge(CallGraphNode source, CallGraphNode target) {
        return new CallGraphEdge(source, target);
    }
}