| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.netbeans.libs.graalsdk.system; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Map; |
| import javax.script.Bindings; |
| import javax.script.ScriptEngineFactory; |
| import javax.script.ScriptEngineManager; |
| import org.graalvm.polyglot.Engine; |
| import org.graalvm.polyglot.Language; |
| import org.netbeans.spi.scripting.EngineProvider; |
| import org.openide.util.Lookup; |
| import org.openide.util.lookup.ServiceProvider; |
| |
| @ServiceProvider(service = EngineProvider.class) |
| public final class GraalSystemEnginesProvider implements EngineProvider { |
| private Throwable disable; |
| |
| public GraalSystemEnginesProvider() { |
| } |
| |
| @Override |
| public List<ScriptEngineFactory> factories() { |
| return factories(null); |
| } |
| |
| @Override |
| public List<ScriptEngineFactory> factories(ScriptEngineManager m) { |
| List<ScriptEngineFactory> arr = new ArrayList<>(); |
| try { |
| if (disable == null) { |
| enumerateLanguages(arr, m == null ? null : m.getBindings()); |
| } |
| } catch (IllegalStateException | LinkageError err) { |
| disable = err; |
| } |
| return arr; |
| } |
| |
| private void enumerateLanguages(List<ScriptEngineFactory> arr, Bindings globals) { |
| final GraalContext ctx = new GraalContext(globals, Lookup.getDefault().lookup(ClassLoader.class)); |
| GraalContext.executeWithClassLoader(() -> { |
| Engine.Builder b = Engine.newBuilder(); |
| try (Engine engine = b.build()) { |
| for (Map.Entry<String, Language> entry : engine.getLanguages().entrySet()) { |
| arr.add(new GraalEngineFactory(ctx, entry.getKey(), entry.getValue())); |
| } |
| } |
| return null; |
| }, Engine.class.getClassLoader()); |
| } |
| } |