ClassDumper.java

/*
 * Copyright 2011 William Bernardet
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.googlecode.japi.checker;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.logging.Logger;

import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.Attribute;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.FieldVisitor;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;

import com.googlecode.japi.checker.model.ClassData;
import com.googlecode.japi.checker.model.FieldData;
import com.googlecode.japi.checker.model.InnerClassData;
import com.googlecode.japi.checker.model.MethodData;

class ClassDumper extends ClassVisitor {
    private ClassDataLoader loader;
    private Logger logger = Logger.getLogger(ClassDumper.class.getName());
    private ClassData clazz; // current main class being parsed.
    private Map<String, ClassData> classes = new HashMap<String, ClassData>();
    
    /**
     * Create a new visitor instance.
     * @param loader the ClassDataLoader to which the model are associated.
     */
    public ClassDumper(ClassDataLoader loader) {
        super(Opcodes.ASM4);
        this.loader = loader;
    }
    
    /**
     * {@inheritDoc}
     */
    public void visit(int version, int access, String name, String signature,
            String superName, String[] interfaces) {
        logger.fine("class " + name + " extends " + superName + " {");
        clazz = new ClassData(loader, null, access, name, signature, superName, interfaces, version);
        classes.put(name, clazz);
    }

    /**
     * {@inheritDoc}
     */
    public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
        return new AnnotationDumper(clazz, desc, visible);
    }

    public void visitAttribute(Attribute attribute) {
    }

    public void visitEnd() {
        logger.fine("}");
        clazz = null;
    }

    public FieldVisitor visitField(int access, String name, String desc,
            String signature, Object value) {
        logger.fine("    -(field) " + name + " " + signature + " " + desc);
        clazz.add(new FieldData(loader, clazz, access, name, desc, signature, value));
        return null;
    }

    public void visitInnerClass(String name, String outerName, String innerName, int access) {
        logger.fine("    +(ic) " + name + " " + outerName + " " + innerName + " " + access);
        //clazz = new ClassData(access, name, innerName);
        clazz.add(new InnerClassData(loader, clazz, access, name, outerName, innerName));
    }

    public MethodVisitor visitMethod(int access, String name, String descriptor,
            String signature, String[] exceptions) {
        logger.fine("    +(m) " + name + " " + descriptor + " " + signature + " " + Arrays.toString(exceptions));
        MethodData method = new MethodData(loader, clazz, access, name, descriptor, signature, exceptions);
        clazz.add(method);
        return new MethodDumper(method);
    }

    public void visitOuterClass(String owner, String name, String desc) {
        logger.fine("    *(oc) " + name + " " + desc);
    }

    public void visitSource(String source, String debug) {
        logger.fine(" - source: " + source);
        logger.fine(" - debug: " + debug);
        clazz.setSource(source);
    }

    public List<ClassData> getClasses() {
        return new ArrayList<ClassData>(classes.values());
    }
}