/*
* 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 javax.annotation.CheckForNull;
import org.apache.bcel.Repository;
import org.apache.bcel.classfile.JavaClass;
import org.apache.bcel.classfile.Method;
import edu.umd.cs.findbugs.ba.AnalysisContext;
import edu.umd.cs.findbugs.ba.XClass;
import edu.umd.cs.findbugs.ba.XFactory;
import edu.umd.cs.findbugs.ba.XMethod;
import edu.umd.cs.findbugs.ba.ch.Subtypes2;
import edu.umd.cs.findbugs.classfile.CheckedAnalysisException;
import edu.umd.cs.findbugs.classfile.ClassDescriptor;
import edu.umd.cs.findbugs.classfile.DescriptorFactory;
import edu.umd.cs.findbugs.classfile.Global;
import edu.umd.cs.findbugs.classfile.MissingClassException;
import edu.umd.cs.findbugs.internalAnnotations.DottedClassName;
import edu.umd.cs.findbugs.internalAnnotations.SlashedClassName;
import edu.umd.cs.findbugs.visitclass.Constants2;
public class Lookup implements Constants2 {
private static Subtypes2 subtypes2() {
return AnalysisContext.currentAnalysisContext().getSubtypes2();
}
public static XClass getXClass(ClassDescriptor c) throws CheckedAnalysisException {
return Global.getAnalysisCache().getClassAnalysis(XClass.class, c);
}
public static XClass getXClass(@SlashedClassName String className) throws CheckedAnalysisException {
return Global.getAnalysisCache().getClassAnalysis(XClass.class, DescriptorFactory.createClassDescriptor(className));
}
public static XClass findSuperImplementor(XClass clazz, String name, String signature, boolean isStatic,
BugReporter bugReporter) {
try {
return findSuperImplementor(clazz, name, signature, isStatic);
} catch (MissingClassException e) {
bugReporter.reportMissingClass(e.getClassDescriptor());
return clazz;
} catch (CheckedAnalysisException e) {
bugReporter.logError("Error finding " + clazz + "." + name + signature, e);
return clazz;
}
}
public static XClass findImplementor(XClass clazz, String name, String signature, boolean isStatic, BugReporter bugReporter) {
try {
return findImplementor(clazz, name, signature, isStatic);
} catch (MissingClassException e) {
bugReporter.reportMissingClass(e.getClassDescriptor());
return clazz;
} catch (CheckedAnalysisException e) {
bugReporter.logError("Error finding " + clazz + "." + name + signature, e);
return clazz;
}
}
public static XClass findSuperImplementor(XClass clazz, String name, String signature, boolean isStatic)
throws CheckedAnalysisException {
ClassDescriptor superclassDescriptor = clazz.getSuperclassDescriptor();
if (superclassDescriptor == null)
return clazz;
return findImplementor(getXClass(superclassDescriptor), name, signature, isStatic);
}
public static XClass findImplementor(XClass clazz, String name, String signature, boolean isStatic)
throws CheckedAnalysisException {
XMethod m = clazz.findMethod(name, signature, isStatic);
if (m != null)
return clazz;
return findSuperImplementor(clazz, name, signature, isStatic);
}
public static @CheckForNull
JavaClass findSuperDefiner(JavaClass clazz, String name, String signature, BugReporter bugReporter) {
try {
JavaClass c = clazz;
while (true) {
c = c.getSuperClass();
if (c == null)
return null;
Method m = findImplementation(c, name, signature);
if (m != null) {
return c;
}
}
} catch (ClassNotFoundException e) {
bugReporter.reportMissingClass(e);
return null;
}
}
public static @CheckForNull
JavaClass findSuperImplementor(JavaClass clazz, String name, String signature, BugReporter bugReporter) {
try {
JavaClass c = clazz;
while (true) {
c = c.getSuperClass();
if (c == null)
return null;
Method m = findImplementation(c, name, signature);
if (m != null && !m.isAbstract())
return c;
}
} catch (ClassNotFoundException e) {
bugReporter.reportMissingClass(e);
return null;
}
}
public static @CheckForNull
XMethod findSuperImplementorAsXMethod(JavaClass clazz, String name, String signature, BugReporter bugReporter) {
try {
JavaClass c = clazz;
while (true) {
c = c.getSuperClass();
if (c == null)
return null;
Method m = findImplementation(c, name, signature);
if (m != null && !m.isAbstract())
return XFactory.createXMethod(c, m);
}
} catch (ClassNotFoundException e) {
bugReporter.reportMissingClass(e);
return null;
}
}
public static @DottedClassName
String findSuperImplementor(@DottedClassName String clazz, String name, String signature, BugReporter bugReporter) {
try {
JavaClass c = findImplementor(Repository.getSuperClasses(clazz), name, signature);
return (c != null) ? c.getClassName() : clazz;
} catch (ClassNotFoundException e) {
bugReporter.reportMissingClass(e);
return clazz;
}
}
public static @CheckForNull
JavaClass findImplementor(JavaClass[] clazz, String name, String signature) {
for (JavaClass aClazz : clazz) {
Method m = findImplementation(aClazz, name, signature);
if (m != null && !m.isAbstract())
return aClazz;
}
return null;
}
public static Method findImplementation(JavaClass clazz, String name, String signature) {
Method[] m = clazz.getMethods();
for (Method aM : m)
if (aM.getName().equals(name) && aM.getSignature().equals(signature) && !aM.isPrivate() && !aM.isStatic())
return aM;
return null;
}
}