Mercurial > hg > truffle
view graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/types/Types.java @ 7292:213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Fri, 21 Dec 2012 10:45:37 -0800 |
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/* * Copyright (c) 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.types; import java.math.*; import com.oracle.truffle.api.codegen.*; @TypeSystem(types = {int.class, BigInteger.class, boolean.class, String.class}, nodeBaseClass = TypedNode.class, hasVoid = true) public class Types { @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) : "Loosing precision"; return result; } } @GuardCheck public boolean isString(Object a, Object b) { return a instanceof String || b instanceof String; } @TypeCheck public boolean isBigInteger(Object value) { return value instanceof Integer || value instanceof BigInteger; } @TypeCast public BigInteger asBigInteger(Object value) { if (value instanceof Integer) { return BigInteger.valueOf((int) value); } else { return (BigInteger) value; } } @TypeCast public BigInteger asBigInteger(int value) { return BigInteger.valueOf(value); } @TypeCheck public boolean isBigInteger(@SuppressWarnings("unused") int value) { return true; } }