org.kjots.json.object.ClassVisitor.java Source code

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Here is the source code for org.kjots.json.object.ClassVisitor.java

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/* 
 * Copyright  2010 Karl J. Ots <kjots@kjots.org>
 * 
 * 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 org.kjots.json.object;

import java.util.Collections;
import java.util.HashSet;
import java.util.Set;

import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.Attribute;
import org.objectweb.asm.FieldVisitor;
import org.objectweb.asm.Type;
import org.objectweb.asm.commons.Method;

/**
 * Class Visitor.
 * <p>
 * Created: 7th April 2010.
 *
 * @author <a href="mailto:kjots@kjots.org">Karl J. Ots &lt;kjots@kjots.org&gt;</a>
 * @since 1.0
 */
public class ClassVisitor implements org.objectweb.asm.ClassVisitor {
    /** The implemented methods. */
    private final Set<Method> implementedMethods = new HashSet<Method>();

    /** The ASM class visitor. */
    private final org.objectweb.asm.ClassVisitor asmClassVisitor;

    /**
     * Construct a new Class Visitor.
     *
     * @param asmClassVisitor The ASM class visitor.
     */
    public ClassVisitor(org.objectweb.asm.ClassVisitor asmClassVisitor) {
        this.asmClassVisitor = asmClassVisitor;
    }

    /**
     * Retrieve the implemented methods.
     *
     * @return The implemented methods.
     */
    public Set<Method> getImplementedMethods() {
        return Collections.unmodifiableSet(this.implementedMethods);
    }

    /**
     * Visit the class.
     * <p>
     * This is a convenience method that is equivalent to the following:
     * <pre>
     *   visit(version, access, type.getInternalName(), signature, superType.getInternalName(), interfaces)
     * </pre>
     * Where <code>interfaces</code> is an array of {@link String}, with each
     * element containing the internal name of the types in <code>interfaceTypes</code>
     * at the corresponding index.
     *
     * @param version The version number.
     * @param access The access flags.
     * @param type The type.
     * @param signature The signature.
     * @param superType The super type.
     * @param interfaceTypes The interface types.
     * @see org.objectweb.asm.ClassVisitor#visit(int, int, String, String, String, String[])
     */
    public void visit(int version, int access, Type type, String signature, Type superType,
            Type... interfaceTypes) {
        String[] interfaces = new String[interfaceTypes.length];
        for (int i = 0; i < interfaceTypes.length; i++) {
            interfaces[i] = interfaceTypes[i].getInternalName();
        }

        this.asmClassVisitor.visit(version, access, type.getInternalName(), signature, superType.getInternalName(),
                interfaces);
    }

    /**
     * Visit a method.
     * <p>
     * This is a convenience method that is equivalent to the following:
     * <pre>
     *   visitMethod(access, method.getName(), method.getDescriptor(), signature, exceptions))
     * </pre>
     * <p>
     * This method will add the given method to set of implemented methods.
     *
     * @param access The access flags.
     * @param method The method.
     * @param signature The signature.
     * @param exceptions The exception.
     * @return The method visitor.
     * @see org.objectweb.asm.ClassVisitor#visitMethod(int, String, String, String, String[])
     */
    public MethodVisitor visitMethod(int access, Method method, String signature, String[] exceptions) {
        MethodVisitor methodVisitor = new MethodVisitor(this.asmClassVisitor.visitMethod(access, method.getName(),
                method.getDescriptor(), signature, exceptions));

        this.implementedMethods.add(method);

        return methodVisitor;
    }

    /**
     * @see org.objectweb.asm.ClassVisitor#visit(int, int, String, String, String, String[])
     */
    @Override
    public void visit(int version, int access, String name, String signature, String superName,
            String[] interfaces) {
        this.asmClassVisitor.visit(version, access, name, signature, superName, interfaces);
    }

    /**
     * @see org.objectweb.asm.ClassVisitor#visitAnnotation(String, boolean)
     */
    @Override
    public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
        return this.asmClassVisitor.visitAnnotation(desc, visible);
    }

    /**
     * @see org.objectweb.asm.ClassVisitor#visitAttribute(Attribute)
     */
    @Override
    public void visitAttribute(Attribute attr) {
        this.asmClassVisitor.visitAttribute(attr);
    }

    /**
     * @see org.objectweb.asm.ClassVisitor#visitEnd()
     */
    @Override
    public void visitEnd() {
        this.asmClassVisitor.visitEnd();
    }

    /**
     * @see org.objectweb.asm.ClassVisitor#visitField(int, String, String, String, Object)
     */
    @Override
    public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) {
        return this.asmClassVisitor.visitField(access, name, desc, signature, value);
    }

    /**
     * @see org.objectweb.asm.ClassVisitor#visitInnerClass(String, String, String, int)
     */
    @Override
    public void visitInnerClass(String name, String outerName, String innerName, int access) {
        this.asmClassVisitor.visitInnerClass(name, outerName, innerName, access);
    }

    /**
     * @see org.objectweb.asm.ClassVisitor#visitMethod(int, String, String, String, String[])
     */
    @Override
    public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
        return new MethodVisitor(this.asmClassVisitor.visitMethod(access, name, desc, signature, exceptions));
    }

    /**
     * @see org.objectweb.asm.ClassVisitor#visitOuterClass(String, String, String)
     */
    @Override
    public void visitOuterClass(String owner, String name, String desc) {
        this.asmClassVisitor.visitOuterClass(owner, name, desc);
    }

    /**
     * @see org.objectweb.asm.ClassVisitor#visitSource(String, String)
     */
    @Override
    public void visitSource(String source, String debug) {
        this.asmClassVisitor.visitSource(source, debug);
    }
}