/*
* FindBugs - Find Bugs in Java programs
* Copyright (C) 2003-2007 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;
import java.util.HashSet;
import java.util.Map;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import edu.umd.cs.findbugs.asm.FBClassReader;
import edu.umd.cs.findbugs.ba.AnalysisContext;
import edu.umd.cs.findbugs.classfile.CheckedAnalysisException;
import edu.umd.cs.findbugs.classfile.ClassDescriptor;
import edu.umd.cs.findbugs.classfile.Global;
import edu.umd.cs.findbugs.classfile.engine.asm.FindBugsASM;
import edu.umd.cs.findbugs.util.MultiMap;
/**
* @author pugh
*/
public class SelfMethodCalls {
static private boolean interestingSignature(String signature) {
return !signature.equals("()V");
}
public static <T> MultiMap<T, T> getSelfCalls(final ClassDescriptor classDescriptor, final Map<String, T> methods) {
final MultiMap<T, T> map = new MultiMap<T, T>(HashSet.class);
FBClassReader reader;
try {
reader = Global.getAnalysisCache().getClassAnalysis(FBClassReader.class, classDescriptor);
} catch (CheckedAnalysisException e) {
AnalysisContext.logError("Error finding self method calls for " + classDescriptor, e);
return map;
}
reader.accept(new ClassVisitor(FindBugsASM.ASM_VERSION) {
@Override
public MethodVisitor visitMethod(final int access, final String name, final String desc, String signature,
String[] exceptions) {
return new MethodVisitor(FindBugsASM.ASM_VERSION) {
@Override
public void visitMethodInsn(int opcode, String owner, String name2, String desc2, boolean itf) {
if (owner.equals(classDescriptor.getClassName()) && interestingSignature(desc2)) {
T from = methods.get(name + desc + ((access & Opcodes.ACC_STATIC) != 0));
T to = methods.get(name2 + desc2 + (opcode == Opcodes.INVOKESTATIC));
map.add(from, to);
}
}
};
}
}, ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
return map;
}
// private final ClassReader classReader;
public SelfMethodCalls(ClassReader classReader) {
// this.classReader = classReader;
}
}