Mercurial > hg > truffle
view graal/com.oracle.max.base/src/com/sun/max/util/ListSymbolizer.java @ 3733:e233f5660da4
Added Java files from Maxine project.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 17 Dec 2011 19:59:18 +0100 |
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/* * Copyright (c) 2007, 2011, 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.sun.max.util; import java.util.*; import com.sun.max.program.*; /** */ final class ListSymbolizer<S extends Symbol> implements Symbolizer<S> { private final Class<S> symbolType; private final List<S> symbols; ListSymbolizer(Class<S> symbolType, List<S> symbols) { if (symbolType.getName().startsWith("com.sun.max.asm") && Symbolizer.Static.hasPackageExternalAccessibleConstructors(symbolType)) { // This test ensures that values passed for symbolic parameters of methods in the // generated assemblers are guaranteed to be legal (assuming client code does not // inject its own classes into the package where the symbol classes are defined). throw ProgramError.unexpected("type of assembler symbol can have values constructed outside of defining package: " + symbolType); } this.symbolType = symbolType; this.symbols = symbols; ProgramError.check(!symbols.isEmpty()); } public Class<S> type() { return symbolType; } public int numberOfValues() { return symbols.size(); } public S fromValue(int value) { for (S symbol : symbols) { if (symbol.value() == value) { return symbol; } } return null; } public Iterator<S> iterator() { return symbols.iterator(); } }