/**
 * Copyright (C) 2010-2017 Gordon Fraser, Andrea Arcuri and EvoSuite
 * contributors
 *
 * This file is part of EvoSuite.
 *
 * EvoSuite 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 3.0 of the License, or
 * (at your option) any later version.
 *
 * EvoSuite 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 Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>.
 */
/**
 * 
 */
package org.evosuite.instrumentation;

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

/**
 * <p>EmptyVisitor class.</p>
 *
 * @author fraser
 */
public class EmptyVisitor extends ClassVisitor {

	AnnotationVisitor av = new AnnotationVisitor(Opcodes.ASM5) {

		@Override
		public AnnotationVisitor visitAnnotation(String name, String desc) {
			return this;
		}

		@Override
		public AnnotationVisitor visitArray(String name) {
			return this;
		}
	};

	/**
	 * <p>Constructor for EmptyVisitor.</p>
	 */
	public EmptyVisitor() {
		super(Opcodes.ASM5);
	}

	/** {@inheritDoc} */
	@Override
	public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
		return av;
	}

	/** {@inheritDoc} */
	@Override
	public FieldVisitor visitField(int access, String name, String desc,
	        String signature, Object value) {
		return new FieldVisitor(Opcodes.ASM5) {

			@Override
			public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
				return av;
			}
		};
	}

	/** {@inheritDoc} */
	@Override
	public MethodVisitor visitMethod(int access, String name, String desc,
	        String signature, String[] exceptions) {
		return new MethodVisitor(Opcodes.ASM5) {

			@Override
			public AnnotationVisitor visitAnnotationDefault() {
				return av;
			}

			@Override
			public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
				return av;
			}

			@Override
			public AnnotationVisitor visitParameterAnnotation(int parameter, String desc,
			        boolean visible) {
				return av;
			}
		};
	}
}