1 /*
   2  * Copyright (c) 2015, 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  */
  23 
  24 /**
  25  * JDK-8144020: Remove long as an internal numeric type
  26  *
  27  * @test
  28  * @run
  29  */
  30 
  31 var LongProvider = Java.type("jdk.nashorn.test.models.LongProvider");
  32 var Long = Java.type("java.lang.Long");
  33 var LongClass = Long.class;
  34 var Integer = Java.type("java.lang.Integer");
  35 var Double = Java.type("java.lang.Double");
  36 
  37 var INT      = "3";
  38 var DOUBLE   = "5.5";
  39 var MAX_LONG = "9223372036854775807";
  40 var MIN_LONG = "-9223372036854775808";
  41 var BIG_LONG = "281474976710655"; // can be represented as double
  42 var NEG_LONG = "-281474976710656"; // can be represented as double
  43 var SMALL_LONG = "13";
  44 
  45 // Make sure we can pass longs from and to Java without losing precision
  46 LongProvider.checkLong(LongProvider.getLong(MAX_LONG), MAX_LONG);
  47 LongProvider.checkLong(LongProvider.getLong(MIN_LONG), MIN_LONG);
  48 LongProvider.checkLong(LongProvider.getLong(BIG_LONG), BIG_LONG);
  49 LongProvider.checkLong(LongProvider.getLong(NEG_LONG), NEG_LONG);
  50 LongProvider.checkLong(LongProvider.getLong(SMALL_LONG), SMALL_LONG);
  51 
  52 // a polymorphic function that can return various number types
  53 function getNumber(str) {
  54     switch (str) {
  55         case INT:    return +INT;
  56         case DOUBLE: return +DOUBLE;
  57         default:     return Long.parseLong(str);
  58     }
  59 }
  60 
  61 function compareValue(n, str) {
  62     switch (str) {
  63         case INT:    return Integer.compare(n, Integer.parseInt(str) == 0);
  64         case DOUBLE: return Double.compare(n, Double.parseDouble(str) == 0);
  65         default:     return Long.compare(n, Long.parseLong(str) == 0);
  66     }
  67 }
  68 
  69 // Call a a function with a sequence of values. The purpose of this is that we can handle
  70 // longs without losing precision in the presence of optimistic deoptimization, cached callsites, etc.
  71 function testSequence(fn, values) {
  72     for (var i in values) {
  73         fn(values[i]);
  74     }
  75 }
  76 
  77 // We need to use "fresh" (unlinked and un-deoptimized) functions for each of the test runs.
  78 testSequence(function(str) {
  79     var n = getNumber(str);
  80     Assert.assertTrue(compareValue(n, str));
  81 }, [INT, BIG_LONG, MIN_LONG]);
  82 
  83 testSequence(function(str) {
  84     var n = getNumber(str);
  85     Assert.assertTrue(compareValue(n, str));
  86 }, [INT, MAX_LONG]);
  87 
  88 testSequence(function(str) {
  89     var n = getNumber(str);
  90     Assert.assertTrue(compareValue(n, str));
  91 }, [INT, DOUBLE, NEG_LONG]);
  92 
  93 testSequence(function(str) {
  94     var n = getNumber(str);
  95     Assert.assertTrue(compareValue(n, str));
  96 }, [DOUBLE, MAX_LONG]);
  97 
  98 testSequence(function(str) {
  99     var n = getNumber(str);
 100     Assert.assertTrue(compareValue(n, str));
 101 }, [DOUBLE, SMALL_LONG, MAX_LONG]);
 102 
 103 testSequence(function(str) {
 104     var n = getNumber(str);
 105     Assert.assertTrue(compareValue(n, str));
 106 }, [INT, DOUBLE, NEG_LONG, MAX_LONG]);
 107 
 108 testSequence(function(str) {
 109     var n = getNumber(str);
 110     Assert.assertTrue(compareValue(n, str));
 111 }, [DOUBLE, MAX_LONG, DOUBLE, INT]);
 112 
 113 // Make sure long arrays make it through Java.from and Java.to without losing precision
 114 var longArrayType = Java.type("long[]");
 115 for (var i = 0; i < 3; i++) {
 116     LongProvider.checkLongArray(Java.to(Java.from(LongProvider.getLongArray(i)), longArrayType), i);
 117 }
 118 
 119 l = Long.parseLong(BIG_LONG);
 120 Assert.assertTrue(l >>> 8 === 0xffffff);
 121 Assert.assertTrue(l << 8 === -0x100);
 122 Assert.assertTrue(l + 1 === 0x1000000000000);
 123 Assert.assertTrue(l - 1 === 0xfffffffffffe);
 124 
 125 Assert.assertEquals(LongProvider.getLong(MAX_LONG).getClass(), LongClass);
 126 Assert.assertEquals(LongProvider.getLong(MIN_LONG).getClass(), LongClass);