duke@1: /*
ohair@554:  * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved.
duke@1:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@1:  *
duke@1:  * This code is free software; you can redistribute it and/or modify it
duke@1:  * under the terms of the GNU General Public License version 2 only, as
duke@1:  * published by the Free Software Foundation.
duke@1:  *
duke@1:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@1:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@1:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@1:  * version 2 for more details (a copy is included in the LICENSE file that
duke@1:  * accompanied this code).
duke@1:  *
duke@1:  * You should have received a copy of the GNU General Public License version
duke@1:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@1:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@1:  *
ohair@554:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@554:  * or visit www.oracle.com if you need additional information or have any
ohair@554:  * questions.
duke@1:  */
duke@1: 
duke@1: /*
duke@1:  * @test
duke@1:  * @bug 4459133
duke@1:  * @summary Forward reference legal or illegal?
duke@1:  * @author gafter
duke@1:  *
duke@1:  * @compile UseBeforeDeclaration.java
duke@1:  */
duke@1: 
duke@1: class UseBeforeDeclaration {
duke@1:     static {
duke@1:         x = 100; // ok - assignment
duke@1: //      int y = ((x)) + 1; // error - read before declaration
duke@1:         int v = ((x)) = 3; // ok - x at left hand side of assignment
duke@1:         int z = UseBeforeDeclaration.x * 2; // ok - not accessed via simple name
duke@1:         Object o = new Object(){
duke@1:                 void foo(){x++;} // ok - occurs in a different class
duke@1:                 {x++;} // ok - occurs in a different class
duke@1:             };
duke@1:     }
duke@1:     {
duke@1:         j = 200; // ok - assignment
duke@1: //      j = j + 1; // error - right hand side reads before declaration
duke@1: //      int k = j = j + 1; // error - right hand side reads before declaration
duke@1:         int n = j = 300; // ok - j at left hand side of assignment
duke@1: //      int h = j++; // error - read before declaration
duke@1:         int l = this.j * 3; // ok - not accessed via simple name
duke@1:         Object o = new Object(){
duke@1:                 void foo(){j++;} // ok - occurs in a different class
duke@1:                 { j = j + 1;} // ok - occurs in a different class
duke@1:             };
duke@1:     }
duke@1:     int w = x= 3; // ok - x at left hand side of assignment
duke@1:     int p = x; // ok - instance initializers may access static fields
duke@1:     static int u = (new Object(){int bar(){return x;}}).bar(); // ok - occurs in a different class
duke@1:     static int x;
duke@1:     int m = j = 4; // ok - j at left hand side of assignment
duke@1:     int o = (new Object(){int bar(){return j;}}).bar(); // ok - occurs in a different class
duke@1:     int j;
duke@1: }