Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.ruby.runtime/src/com/oracle/truffle/ruby/runtime/core/RubyTime.java @ 13514:0fbee3eb71f0
Ruby: import project.
author | Chris Seaton <chris.seaton@oracle.com> |
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date | Mon, 06 Jan 2014 17:12:09 +0000 |
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/* * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This * code is released under a tri EPL/GPL/LGPL license. You can use it, * redistribute it and/or modify it under the terms of the: * * Eclipse Public License version 1.0 * GNU General Public License version 2 * GNU Lesser General Public License version 2.1 */ package com.oracle.truffle.ruby.runtime.core; import java.text.*; import java.util.*; import com.oracle.truffle.ruby.runtime.objects.*; /** * Represents the Ruby {@code Time} class. This is a very rough implementation and is only really * enough to run benchmark harnesses. */ public class RubyTime extends RubyObject { /** * The class from which we create the object that is {@code Time}. A subclass of * {@link RubyClass} so that we can override {@link #newInstance} and allocate a * {@link RubyTime} rather than a normal {@link RubyBasicObject}. */ public static class RubyTimeClass extends RubyClass { public RubyTimeClass(RubyClass objectClass) { super(null, objectClass, "Time"); } @Override public RubyBasicObject newInstance() { return new RubyTime(this, milisecondsToNanoseconds(System.currentTimeMillis())); } } private final long nanoseconds; public RubyTime(RubyClass timeClass, long nanoseconds) { super(timeClass); this.nanoseconds = nanoseconds; } /** * Subtract one time from another, producing duration in seconds. */ public double subtract(RubyTime other) { return nanosecondsToSecond(nanoseconds - other.nanoseconds); } @Override public String toString() { /* * I think this is ISO 8601 with a custom time part. Note that Ruby's time formatting syntax * is different to Java's. */ return new SimpleDateFormat("Y-MM-d H:m:ss Z").format(toDate()); } private Date toDate() { return new Date(nanosecondsToMiliseconds(nanoseconds)); } public static RubyTime fromDate(RubyClass timeClass, long timeMiliseconds) { return new RubyTime(timeClass, milisecondsToNanoseconds(timeMiliseconds)); } private static long milisecondsToNanoseconds(long miliseconds) { return miliseconds * 1000000; } private static long nanosecondsToMiliseconds(long nanoseconds) { return nanoseconds / 1000000; } private static double nanosecondsToSecond(long nanoseconds) { return nanoseconds / 1e9; } }