1 /*

     2  * Copyright 2009 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  */

    23 

    24 /*

    25  * @test

    26  * @bug 6860973

    27  * @summary Project Coin: Underscores in literals

    28  */

    29 

    30 

    31 public class UnderscoreLiterals {

    32     public static void main(String... args) throws Exception {

    33         new UnderscoreLiterals().run();

    34     }

    35 

    36     public void run() throws Exception {

    37         // decimal

    38         test(1, 1);

    39         test(10, 10);

    40         test(1_0, 10);

    41         test(1__0, 10);

    42         test(1_0_0, 100);

    43         test(1__0__0, 100);

    44         test(123_456_789, 123456789);

    45 

    46         // long

    47         test(1l, 1l);

    48         test(10l, 10l);

    49         test(1_0l, 10l);

    50         test(1__0l, 10l);

    51         test(1_0_0l, 100l);

    52         test(1__0__0l, 100l);

    53         test(123_456_789l, 123456789l);

    54 

    55         // float

    56         test(.1f, .1f);

    57         test(.10f, .10f);

    58         test(.1_0f, .10f);

    59         test(.1__0f, .10f);

    60         test(.1_0_0f, .100f);

    61         test(.1__0__0f, .100f);

    62         test(1e1, 1e1);

    63         test(1e10, 1e10);

    64         test(1e1_0, 1e10);

    65         test(1e1__0, 1e10);

    66         test(1e1_0_0, 1e100);

    67         test(1e1__0__0, 1e100);

    68         test(.123_456_789f, .123456789f);

    69         test(0.1f, 0.1f);

    70         test(0.10f, 0.10f);

    71         test(0.1_0f, 0.10f);

    72         test(0.1__0f, 0.10f);

    73         test(0.1_0_0f, 0.100f);

    74         test(0.1__0__0f, 0.100f);

    75         test(0.123_456_789f, 0.123456789f);

    76         test(1_1.1f, 1_1.1f);

    77         test(1_1.10f, 1_1.10f);

    78         test(1_1.1_0f, 1_1.10f);

    79         test(1_1.1__0f, 1_1.10f);

    80         test(1_1.1_0_0f, 1_1.100f);

    81         test(1_1.1__0__0f, 1_1.100f);

    82         test(1_1.123_456_789f, 1_1.123456789f);

    83 

    84         // double

    85         test(.1d, .1d);

    86         test(.10d, .10d);

    87         test(.1_0d, .10d);

    88         test(.1__0d, .10d);

    89         test(.1_0_0d, .100d);

    90         test(.1__0__0d, .100d);

    91         test(1e1, 1e1);

    92         test(1e10, 1e10);

    93         test(1e1_0, 1e10);

    94         test(1e1__0, 1e10);

    95         test(1e1_0_0, 1e100);

    96         test(1e1__0__0, 1e100);

    97         test(.123_456_789d, .123456789d);

    98         test(0.1d, 0.1d);

    99         test(0.10d, 0.10d);

   100         test(0.1_0d, 0.10d);

   101         test(0.1__0d, 0.10d);

   102         test(0.1_0_0d, 0.100d);

   103         test(0.1__0__0d, 0.100d);

   104         test(0.123_456_789d, 0.123456789d);

   105         test(1_1.1d, 1_1.1d);

   106         test(1_1.10d, 1_1.10d);

   107         test(1_1.1_0d, 1_1.10d);

   108         test(1_1.1__0d, 1_1.10d);

   109         test(1_1.1_0_0d, 1_1.100d);

   110         test(1_1.1__0__0d, 1_1.100d);

   111         test(1_1.123_456_789d, 1_1.123456789d);

   112 

   113         // binary

   114         test(0b1, 1);

   115         test(0b10, 2);

   116         test(0b1_0, 2);

   117         test(0b1__0, 2);

   118         test(0b1_0_0, 4);

   119         test(0b1__0__0, 4);

   120         test(0b0001_0010_0011, 0x123);

   121 

   122         // octal

   123         test(01, 1);

   124         test(010, 8);

   125         test(01_0, 8);

   126         test(01__0, 8);

   127         test(01_0_0, 64);

   128         test(01__0__0, 64);

   129         test(0_1, 1);

   130         test(0_10, 8);

   131         test(0_1_0, 8);

   132         test(0_1__0, 8);

   133         test(0_1_0_0, 64);

   134         test(0_1__0__0, 64);

   135         test(0_001_002_003, 01002003);

   136 

   137         // hexadecimal

   138         test(0x1, 1);

   139         test(0x10, 16);

   140         test(0x1_0, 16);

   141         test(0x1__0, 16);

   142         test(0x1_0_0, 256);

   143         test(0x1__0__0, 256);

   144         test(0x01_02_03_04, 0x1020304);

   145 

   146         // misc

   147         long creditCardNumber = 1234_5678_9012_3456L;

   148         test(creditCardNumber, 1234567890123456L);

   149         long socialSecurityNumbers = 999_99_9999L;

   150         test(socialSecurityNumbers, 999999999L);

   151         double monetaryAmount = 12_345_132.12d;

   152         test(monetaryAmount, 12345132.12d);

   153         long hexBytes = 0xFF_EC_DE_5E;

   154         test(hexBytes, 0xffecde5e);

   155         long hexWords = 0xFFEC_DE5E;

   156         test(hexWords, 0xffecde5e);

   157         long maxLong = 0x7fff_ffff_ffff_ffffL;

   158         test(maxLong, 0x7fffffffffffffffL);

   159         long maxLongDecimal = 9223372036854775807L;

   160         long alsoMaxLong = 9_223_372_036_854_775_807L;

   161         test(alsoMaxLong, maxLongDecimal);

   162         double whyWouldYouEverDoThis = 0x1.ffff_ffff_ffff_fp10_23;

   163         double whyWouldYouEverDoEvenThis = 0x1.fffffffffffffp1023;

   164         test(whyWouldYouEverDoThis, whyWouldYouEverDoEvenThis);

   165 

   166         if (errors > 0)

   167              throw new Exception(errors + " errors found");

   168     }

   169 

   170     void test(int value, int expect) {

   171         count++;

   172         if (value != expect)

   173             error("test " + count + "\nexpected: 0x" + Integer.toHexString(expect) + "\n   found: 0x" + Integer.toHexString(value));

   174     }

   175 

   176     void test(double value, double expect) {

   177         count++;

   178         if (value != expect)

   179             error("test " + count + "\nexpected: 0x" + expect + "\n   found: 0x" + value);

   180     }

   181 

   182     void test(long value, long expect) {

   183         count++;

   184         if (value != expect)

   185             error("test " + count + "\nexpected: 0x" + Long.toHexString(expect) + "\n   found: 0x" + Long.toHexString(value));

   186     }

   187 

   188     void error(String message) {

   189         System.out.println(message);

   190         errors++;

   191     }

   192 

   193     int count;

   194     int errors;

   195 }