/*
 * 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 org.apache.bcel.classfile.Field;
import org.apache.bcel.classfile.JavaClass;

import edu.umd.cs.findbugs.BugInstance;
import edu.umd.cs.findbugs.BugReporter;
import edu.umd.cs.findbugs.Detector;
import edu.umd.cs.findbugs.ba.AnalysisContext;
import edu.umd.cs.findbugs.ba.ClassContext;
import edu.umd.cs.findbugs.ba.JCIPAnnotationDatabase;
import edu.umd.cs.findbugs.visitclass.PreorderVisitor;

public class CheckImmutableAnnotation extends PreorderVisitor implements Detector {

    BugReporter bugReporter;

    public CheckImmutableAnnotation(BugReporter bugReporter) {
        this.bugReporter = bugReporter;
    }

    @Override
    public void visitJavaClass(JavaClass obj) {
        JCIPAnnotationDatabase jcipAnotationDatabase = AnalysisContext.currentAnalysisContext().getJCIPAnnotationDatabase();
        if (jcipAnotationDatabase.hasClassAnnotation(obj.getClassName().replace('/', '.'), "Immutable")) {
            super.visitJavaClass(obj);
        }
    }

    @Override
    public void visit(Field obj) {
        if (!obj.isFinal() && !obj.isTransient() && !obj.isVolatile()) {
            bugReporter.reportBug(new BugInstance(this, "JCIP_FIELD_ISNT_FINAL_IN_IMMUTABLE_CLASS", NORMAL_PRIORITY).addClass(
                    this).addVisitedField(this));
        }
    }

    @Override
    public void report() {

    }

    @Override
    public void visitClassContext(ClassContext classContext) {
        classContext.getJavaClass().accept(this);

    }

}
