Wed, 26 Jan 2011 13:45:25 -0800
7013272: Automatically generate info about how compiler resource keys are used
Reviewed-by: mcimadamore
1 /*
2 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
24 /*
25 * @test
26 * @bug 4459133
27 * @summary Forward reference legal or illegal?
28 * @author gafter
29 *
30 * @compile UseBeforeDeclaration.java
31 */
33 class UseBeforeDeclaration {
34 static {
35 x = 100; // ok - assignment
36 // int y = ((x)) + 1; // error - read before declaration
37 int v = ((x)) = 3; // ok - x at left hand side of assignment
38 int z = UseBeforeDeclaration.x * 2; // ok - not accessed via simple name
39 Object o = new Object(){
40 void foo(){x++;} // ok - occurs in a different class
41 {x++;} // ok - occurs in a different class
42 };
43 }
44 {
45 j = 200; // ok - assignment
46 // j = j + 1; // error - right hand side reads before declaration
47 // int k = j = j + 1; // error - right hand side reads before declaration
48 int n = j = 300; // ok - j at left hand side of assignment
49 // int h = j++; // error - read before declaration
50 int l = this.j * 3; // ok - not accessed via simple name
51 Object o = new Object(){
52 void foo(){j++;} // ok - occurs in a different class
53 { j = j + 1;} // ok - occurs in a different class
54 };
55 }
56 int w = x= 3; // ok - x at left hand side of assignment
57 int p = x; // ok - instance initializers may access static fields
58 static int u = (new Object(){int bar(){return x;}}).bar(); // ok - occurs in a different class
59 static int x;
60 int m = j = 4; // ok - j at left hand side of assignment
61 int o = (new Object(){int bar(){return j;}}).bar(); // ok - occurs in a different class
62 int j;
63 }