jdk8-mips64-public/langtools: test/tools/javac/ForwardReference/UseBeforeDeclaration.java@9a66ca7c79fa

     1 /*

     2  * Copyright 2002 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any 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 }

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