Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/SLTypes.java @ 12428:15141192206d
Backed out changeset: 5b1a2e8e82d6
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 15 Oct 2013 21:32:13 +0200 |
parents | 3faec5ab0696 |
children | 71991b7a0f14 |
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/* * Copyright (c) 2012, 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.truffle.sl; import java.math.*; import com.oracle.truffle.api.dsl.*; @TypeSystem({int.class, BigInteger.class, boolean.class, String.class}) public class SLTypes { @TypeCheck public boolean isInteger(Object value) { return value instanceof Integer || (value instanceof BigInteger && ((BigInteger) value).bitLength() < Integer.SIZE); } @TypeCast public int asInteger(Object value) { assert isInteger(value); if (value instanceof Integer) { return (int) value; } else { int result = ((BigInteger) value).intValue(); assert BigInteger.valueOf(result).equals(value) : "Losing precision"; return result; } } @ImplicitCast public BigInteger castBigInteger(int integer) { return BigInteger.valueOf(integer); } }