Java example source code file (MethodScope.java)

This example Java source code file (MethodScope.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

abstractscope, class, methodscope, reflection, scope

The MethodScope.java Java example source code

/*
 * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package sun.reflect.generics.scope;

import java.lang.reflect.Method;


/**
 * This class represents the scope containing the type variables of
 * a method.
 */
public class MethodScope extends AbstractScope<Method> {

    // constructor is private to enforce use of factory method
    private MethodScope(Method m){
        super(m);
    }

    // utility method; computes enclosing class, from which we can
    // derive enclosing scope.
    private Class<?> getEnclosingClass(){
        return getRecvr().getDeclaringClass();
    }

    /**
     * Overrides the abstract method in the superclass.
     * @return the enclosing scope
     */
    protected Scope computeEnclosingScope() {
        // the enclosing scope of a (generic) method is the scope of the
        // class in which it was declared.
        return ClassScope.make(getEnclosingClass());
    }

    /**
     * Factory method. Takes a <tt>Method object and creates a
     * scope for it.
     * @param m - A Method whose scope we want to obtain
     * @return The type-variable scope for the method m
     */
    public static MethodScope make(Method m) {
        return new MethodScope(m);
    }
}