/*
* FindBugs - Find bugs in Java programs
* Copyright (C) 2004-2006 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.detect;
import java.util.Iterator;
import org.apache.bcel.classfile.Code;
import org.apache.bcel.classfile.LocalVariable;
import org.apache.bcel.classfile.LocalVariableTable;
import edu.umd.cs.findbugs.BugReporter;
import edu.umd.cs.findbugs.Detector;
import edu.umd.cs.findbugs.TrainingDetector;
import edu.umd.cs.findbugs.ba.AnalysisContext;
import edu.umd.cs.findbugs.ba.ClassContext;
import edu.umd.cs.findbugs.ba.SignatureParser;
import edu.umd.cs.findbugs.ba.interproc.MethodPropertyDatabase;
import edu.umd.cs.findbugs.ba.interproc.ParameterProperty;
import edu.umd.cs.findbugs.ba.interproc.PropertyDatabaseFormatException;
import edu.umd.cs.findbugs.visitclass.PreorderVisitor;
public class TrainLongInstantfParams extends PreorderVisitor implements Detector, TrainingDetector {
static class LongInstantParameterDatabase extends MethodPropertyDatabase<ParameterProperty> {
@Override
protected ParameterProperty decodeProperty(String propStr) throws PropertyDatabaseFormatException {
try {
int longInstants = Integer.parseInt(propStr);
ParameterProperty prop = new ParameterProperty(longInstants);
return prop;
} catch (NumberFormatException e) {
throw new PropertyDatabaseFormatException("Invalid unconditional deref param set: " + propStr);
}
}
/*
* (non-Javadoc)
*
* @see
* edu.umd.cs.findbugs.ba.interproc.MethodPropertyDatabase#encodeProperty
* (Property)
*/
@Override
protected String encodeProperty(ParameterProperty property) {
return String.valueOf(property.getParamsWithProperty());
}
}
LongInstantParameterDatabase database = new LongInstantParameterDatabase();
public TrainLongInstantfParams(BugReporter bugReporter) {
}
@Override
public void visit(Code obj) {
if (!getMethod().isPublic() && !getMethod().isProtected()) {
return;
}
SignatureParser p = new SignatureParser(getMethodSig());
LocalVariableTable t = obj.getLocalVariableTable();
if (t == null) {
return;
}
ParameterProperty property = new ParameterProperty();
int index = getMethod().isStatic() ? 0 : 1;
int parameterNumber = 0;
for (Iterator<String> i = p.parameterSignatureIterator(); i.hasNext();) {
String s = i.next();
LocalVariable localVariable = t.getLocalVariable(index, 0);
if (localVariable != null) {
String name = localVariable.getName();
if (s.equals("J") && (name.toLowerCase().indexOf("instant") >= 0 || name.startsWith("date"))) {
// System.out.println(getFullyQualifiedMethodName() + " " + s + " " + index + " " + name);
property.setParamWithProperty(parameterNumber, true);
}
}
if (s.equals("J") || s.equals("D")) {
index += 2;
} else {
index += 1;
}
parameterNumber++;
}
if (!property.isEmpty()) {
// System.out.println(getFullyQualifiedMethodName() + " " + property);
database.setProperty(getMethodDescriptor(), property);
}
}
/*
* (non-Javadoc)
*
* @see edu.umd.cs.findbugs.Detector#report()
*/
@Override
public void report() {
// System.out.println(database.entrySet().size() + " methods");
AnalysisContext.currentAnalysisContext().storePropertyDatabase(database, "longInstant.db", "long instant database");
}
@Override
public void visitClassContext(ClassContext classContext) {
classContext.getJavaClass().accept(this);
}
}