| /** |
| * Copyright (c) 2011, 2015 - Lunifera GmbH (Gross Enzersdorf, Austria), Loetz GmbH&Co.KG (69115 Heidelberg, Germany) |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Florian Pirchner - Initial implementation |
| */ |
| package org.eclipse.osbp.dsl.xtext.lazyresolver.hook; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.core.runtime.IExtension; |
| import org.eclipse.core.runtime.IExtensionPoint; |
| import org.eclipse.core.runtime.IExtensionRegistry; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.osbp.dsl.xtext.lazyresolver.api.hook.IInferrerDelegate; |
| import org.eclipse.xtext.LanguageInfo; |
| import org.eclipse.xtext.common.types.JvmDeclaredType; |
| import org.eclipse.xtext.xbase.jvmmodel.IJvmDeclaredTypeAcceptor; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.inject.Inject; |
| import com.google.inject.Injector; |
| |
| /** |
| * Delegates inferring to registered extensions. See extensionpoint |
| * "org.eclipse.osbp.dsl.xtext.lazyresolver.inferrerDelegate" |
| */ |
| public class ExtensionsInferrerDelegate implements IInferrerDelegate { |
| |
| private static final Logger LOGGER = LoggerFactory |
| .getLogger(ExtensionsInferrerDelegate.class); |
| |
| private static final String ATTR_GRAMMAR = "grammarName"; //$NON-NLS-1$ |
| private static final String ATTR_INFERRERHOOK = "inferrerDelegateClass"; //$NON-NLS-1$ |
| private static final String INFERRER_HOOK_EXTPT = "inferrerDelegate"; //$NON-NLS-1$ |
| |
| @Inject |
| private LanguageInfo languageInfo; |
| @Inject |
| private Injector injector; |
| |
| @Override |
| public void inferTypesOnly(EObject semanticElement, |
| IJvmDeclaredTypeAcceptor acceptor, boolean preIndexingPhase) { |
| |
| for (IInferrerDelegate hook : readExtentions(languageInfo |
| .getLanguageName())) { |
| hook.inferTypesOnly(semanticElement, acceptor, preIndexingPhase); |
| } |
| } |
| |
| @Override |
| public void inferFullState(JvmDeclaredType jvmType, |
| EObject semanticElement, IJvmDeclaredTypeAcceptor acceptor, |
| boolean preIndexingPhase, String selector) { |
| |
| for (IInferrerDelegate hook : readExtentions(languageInfo |
| .getLanguageName())) { |
| hook.inferFullState(jvmType, semanticElement, acceptor, |
| preIndexingPhase, selector); |
| } |
| } |
| |
| /** |
| * Extensions are being processed new for each request, since each call |
| * needs a new instance of inferrer. |
| * |
| * @param grammarName |
| * @return |
| */ |
| private List<IInferrerDelegate> readExtentions(String grammarName) { |
| IExtensionRegistry registry = Platform.getExtensionRegistry(); |
| IExtensionPoint point = registry.getExtensionPoint( |
| "org.eclipse.osbp.dsl.xtext.lazyresolver.api", INFERRER_HOOK_EXTPT); |
| if (point == null) { |
| return Collections.emptyList(); |
| } |
| |
| List<IInferrerDelegate> delegates = new ArrayList<IInferrerDelegate>(1); |
| IExtension[] extensions = point.getExtensions(); |
| for (int i = 0; i < extensions.length; i++) { |
| IConfigurationElement[] elements = extensions[i] |
| .getConfigurationElements(); |
| for (int j = 0; j < elements.length; j++) { |
| String _grammarName = elements[j].getAttribute(ATTR_GRAMMAR); |
| if (_grammarName != null && _grammarName.equals(grammarName)) { |
| try { |
| IInferrerDelegate delegate = (IInferrerDelegate) elements[j] |
| .createExecutableExtension(ATTR_INFERRERHOOK); |
| injector.injectMembers(delegate); |
| delegates.add(delegate); |
| } catch (CoreException e) { |
| LOGGER.error("{}", e); |
| } |
| } |
| } |
| } |
| return delegates; |
| } |
| } |