qualifiedthisandsuper_1.java

是一款用JAVA 编写的编译器 具有很强的编译功能

/*
 * Copyright 1998 Sun Microsystems, Inc.  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.
 *
 * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

/*
 * @test
 * @bug 4147520
 * @summary Verify correct implementation of qualified 'this' and 'super'.
 * @author maddox
 * 
 * @run compile QualifiedThisAndSuper_1.java
 * @run main QualifiedThisAndSuper_1
 */

public class QualifiedThisAndSuper_1 {

    public class AS {
	String s = "ass";
	private String t = "ast";
	protected String u = "asu";
	String m() { return "asm"; }
	private String n() { return "asn"; }
	protected String o() { return "aso"; }
    }

    public class BS {
	String s = "bss";
	private String t = "bst";
	protected String u = "bsu";
	String m() { return "bsm"; }
	private String n() { return "bsn"; }
	protected String o() { return "bso"; }
    }

    public class CS {
	String s = "css";
	private String t = "cst";
	protected String u = "csu";
	String m() { return "csm"; }
	private String n() { return "csn"; }
	protected String o() { return "cso"; }
    }


    void check(String expr, String result, String expected) {
	if (!result.equals(expected)) {
	    throw new Error("Evaluated "+ expr +
			    " : result " + result + ", expected " + expected);
	}
    }

    public class A extends AS {
	A() { super(); }
	String s = "as";
	private String t = "at";
	protected String u = "au";
	String m() { return "am"; }
	private String n() { return "an"; }
	protected String o() { return "ao"; }
	public class B extends BS {
	    B() { super(); }
	    String s = "bs";
	    private String t = "bt";
	    protected String u = "bu";
	    String m() { return "bm"; }
	    private String n() { return "bn"; }
	    protected String o() { return "bo"; }
	    public class C extends CS {
		C() { super(); }
		String s = "cs";
		private String t = "ct";
		protected String u = "cu";
		String m() { return "cm"; }
		private String n() { return "cn"; }
		protected String o() { return "co"; }
		void test() {

		    check("this.m()", this.m(), "cm");

		    check("A.this.m()", A.this.m(), "am");
		    check("B.this.m()", B.this.m(), "bm");
		    check("C.this.m()", C.this.m(), "cm");

		    check("super.m()", super.m(), "csm");

		    check("A.super.m()", A.super.m(), "asm");
		    check("B.super.m()", B.super.m(), "bsm");
		    check("C.super.m()", C.super.m(), "csm");

		    // should re-use access methods.
		    check("A.super.m()", A.super.m(), "asm");
		    check("B.super.m()", B.super.m(), "bsm");
		    check("C.super.m()", C.super.m(), "csm");

		    //---

		    check("this.n()", this.n(), "cn");

		    check("A.this.n()", A.this.n(), "an");
		    check("B.this.n()", B.this.n(), "bn");
		    check("C.this.n()", C.this.n(), "cn");


		    check("super.n()", super.n(), "csn");



		    check("A.super.n()", A.super.n(), "asn");

		    check("B.super.n()", B.super.n(), "bsn");
		    check("C.super.n()", C.super.n(), "csn");

		    // should re-use access methods.
		    check("A.super.n()", A.super.n(), "asn");
		    check("B.super.n()", B.super.n(), "bsn");
		    check("C.super.n()", C.super.n(), "csn");

		    //---

		    check("this.o()", this.o(), "co");

		    check("A.this.o()", A.this.o(), "ao");
		    check("B.this.o()", B.this.o(), "bo");
		    check("C.this.o()", C.this.o(), "co");

		    check("super.o()", super.o(), "cso");

		    check("A.super.o()", A.super.o(), "aso");
		    check("B.super.o()", B.super.o(), "bso");
		    check("C.super.o()", C.super.o(), "cso");

		    // should re-use access methods.
		    check("A.super.o()", A.super.o(), "aso");
		    check("B.super.o()", B.super.o(), "bso");
		    check("C.super.o()", C.super.o(), "cso");

		    //---
		    
		    check("this.s", this.s, "cs");

		    check("A.this.s", A.this.s, "as");
		    check("B.this.s", B.this.s, "bs");
		    check("C.this.s", C.this.s, "cs");

		    //---

		    check("this.t", this.t, "ct");

		    check("A.this.t", A.this.t, "at");
		    check("B.this.t", B.this.t, "bt");
		    check("C.this.t", C.this.t, "ct");

		    //---
		    
		    check("this.u", this.u, "cu");

		    check("A.this.u", A.this.u, "au");
		    check("B.this.u", B.this.u, "bu");
		    check("C.this.u", C.this.u, "cu");

		    //---
		    
		    check("super.s", super.s, "css");

		    check("A.super.s", A.super.s, "ass");
		    check("B.super.s", B.super.s, "bss");
		    check("C.super.s", C.super.s, "css");

		    //---
		    
		    check("super.t", super.t, "cst");

		    check("A.super.t", A.super.t, "ast");
		    check("B.super.t", B.super.t, "bst");
		    check("C.super.t", C.super.t, "cst");

		    //---
		    
		    check("super.u", super.u, "csu");

		    check("A.super.u", A.super.u, "asu");
		    check("B.super.u", B.super.u, "bsu");
		    check("C.super.u", C.super.u, "csu");

		    //---

		    A.this.s = "foo";
		    System.out.println(A.this.s);
		    check("A.this.s", A.this.s, "foo");
		    B.this.s = "bar";
		    System.out.println(B.this.s);
		    check("B.this.s", B.this.s, "bar");
		    C.this.s = "baz";
		    System.out.println(C.this.s);
		    check("C.this.s", C.this.s, "baz");

		    A.this.t = "foo";
		    System.out.println(A.this.t);
		    check("A.this.t", A.this.t, "foo");
		    B.this.t = "bar";
		    System.out.println(B.this.t);
		    check("B.this.t", B.this.t, "bar");
		    C.this.t = "baz";
		    System.out.println(C.this.t);
		    check("C.this.t", C.this.t, "baz");

		    A.this.u = "foo";
		    System.out.println(A.this.u);
		    check("A.this.u", A.this.u, "foo");
		    B.this.u = "bar";
		    System.out.println(B.this.u);
		    check("B.this.u", B.this.u, "bar");
		    C.this.u = "baz";
		    System.out.println(C.this.u);
		    check("C.this.u", C.this.u, "baz");

		    A.super.s = "foo";
		    System.out.println(A.super.s);
		    check("A.super.s", A.super.s, "foo");
		    B.super.s = "bar";
		    System.out.println(B.super.s);
		    check("B.super.s", B.super.s, "bar");
		    C.super.s = "baz";
		    System.out.println(C.super.s);
		    check("C.super.s", C.super.s, "baz");

		    A.super.t = "foo";
		    System.out.println(A.super.t);
		    check("A.super.t", A.super.t, "foo");
		    B.super.t = "bar";
		    System.out.println(B.super.t);
		    check("B.super.t", B.super.t, "bar");
		    C.super.t = "baz";
		    System.out.println(C.super.t);
		    check("C.super.t", C.super.t, "baz");

		    A.super.u = "foo";
		    System.out.println(A.super.u);
		    check("A.super.u", A.super.u, "foo");
		    B.super.u = "bar";
		    System.out.println(B.super.u);
		    check("B.super.u", B.super.u, "bar");
		    C.super.u = "baz";
		    System.out.println(C.super.u);
		    check("C.super.u", C.super.u, "baz");

		}
	    }
	    void test() throws Exception {
		C c = new C();
		c.test();
	    }
	}
	void test() throws Exception {
	    B b = new B();
	    b.test();
	}
    }
    
    public static void main(String[] args) throws Exception {
	A a = new QualifiedThisAndSuper_1().new A();
	a.test();
    }
}