/*
* FindBugs - Find bugs in Java programs
* Copyright (C) 2008, 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.classfile.engine.bcel;
import org.apache.bcel.generic.ConstantPoolGen;
import edu.umd.cs.findbugs.SystemProperties;
import edu.umd.cs.findbugs.ba.CFG;
import edu.umd.cs.findbugs.ba.DataflowCFGPrinter;
import edu.umd.cs.findbugs.ba.DepthFirstSearch;
import edu.umd.cs.findbugs.ba.XFactory;
import edu.umd.cs.findbugs.ba.XMethod;
import edu.umd.cs.findbugs.ba.npe.IsNullValueDataflow;
import edu.umd.cs.findbugs.ba.obl.ObligationAnalysis;
import edu.umd.cs.findbugs.ba.obl.ObligationDataflow;
import edu.umd.cs.findbugs.ba.obl.ObligationFactory;
import edu.umd.cs.findbugs.ba.obl.ObligationPolicyDatabase;
import edu.umd.cs.findbugs.ba.type.TypeDataflow;
import edu.umd.cs.findbugs.classfile.CheckedAnalysisException;
import edu.umd.cs.findbugs.classfile.IAnalysisCache;
import edu.umd.cs.findbugs.classfile.MethodDescriptor;
import edu.umd.cs.findbugs.log.Profiler;
/**
* Analysis factory which creates instances of ObligationDataflow.
*
* @author David Hovemeyer
*/
public class ObligationDataflowFactory extends AnalysisFactory<ObligationDataflow> {
private static final boolean DEBUG_PRINTCFG = SystemProperties.getBoolean("oa.printcfg");
public ObligationDataflowFactory() {
super("Obligation dataflow", ObligationDataflow.class);
}
@Override
public ObligationDataflow analyze(IAnalysisCache analysisCache, MethodDescriptor methodDescriptor)
throws CheckedAnalysisException {
CFG cfg = analysisCache.getMethodAnalysis(CFG.class, methodDescriptor);
DepthFirstSearch dfs = analysisCache.getMethodAnalysis(DepthFirstSearch.class, methodDescriptor);
XMethod xmethod = XFactory.createXMethod(methodDescriptor);
ConstantPoolGen cpg = analysisCache.getClassAnalysis(ConstantPoolGen.class, methodDescriptor.getClassDescriptor());
ObligationPolicyDatabase database = analysisCache.getDatabase(ObligationPolicyDatabase.class);
TypeDataflow typeDataflow = analysisCache.getMethodAnalysis(TypeDataflow.class, methodDescriptor);
IsNullValueDataflow invDataflow = analysisCache.getMethodAnalysis(IsNullValueDataflow.class, methodDescriptor);
ObligationFactory factory = database.getFactory();
ObligationAnalysis analysis = new ObligationAnalysis(dfs, xmethod, cpg, factory, database, typeDataflow, invDataflow,
analysisCache.getErrorLogger());
ObligationDataflow dataflow = new ObligationDataflow(cfg, analysis);
Profiler profiler = analysisCache.getProfiler();
profiler.start(analysis.getClass());
try {
dataflow.execute();
} finally {
profiler.end(analysis.getClass());
}
if (DEBUG_PRINTCFG) {
System.out.println("Dataflow CFG:");
DataflowCFGPrinter.printCFG(dataflow, System.out);
}
return dataflow;
}
}