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view graal/com.oracle.graal.lir/src/com/oracle/graal/lir/constopt/VariableMap.java @ 18163:c88ab4f1f04a
re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
author | Doug Simon <doug.simon@oracle.com> |
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date | Fri, 24 Oct 2014 16:18:10 +0200 |
parents | 2451521ed26f |
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/* * Copyright (c) 2014, 2014, 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.graal.lir.constopt; import java.util.*; import java.util.function.*; import com.oracle.graal.lir.*; /** * Maps variables to a generic type. * * TODO (je) evaluate data structure */ class VariableMap<T> { private final ArrayList<T> content; public VariableMap() { content = new ArrayList<>(); } public T get(Variable key) { if (key == null || key.index >= content.size()) { return null; } return content.get(key.index); } public T put(Variable key, T value) { assert key != null : "Key cannot be null"; assert value != null : "Value cannot be null"; while (key.index >= content.size()) { content.add(null); } return content.set(key.index, value); } public T remove(Variable key) { assert key != null : "Key cannot be null"; if (key.index >= content.size()) { return null; } return content.set(key.index, null); } public void forEach(Consumer<T> action) { for (T e : content) { if (e != null) { action.accept(e); } } } /** * Keeps only keys which match the given predicate. */ public void filter(Predicate<T> predicate) { for (int i = 0; i < content.size(); i++) { T e = content.get(i); if (e != null && !predicate.test(e)) { content.set(i, null); } } } }