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/**
* <copyright>
*
* Copyright (c) 2008 itemis AG and others.
* 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:
* itemis AG - Initial API and implementation
*
* </copyright>
*
*/
package org.eclipse.emf.editor.extxpt;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.resources.IProject;
import org.eclipse.emf.common.util.TreeIterator;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.emf.editor.EEPlugin;
import org.eclipse.emf.mwe.core.issues.Issues;
import org.eclipse.emf.mwe.core.issues.IssuesImpl;
import org.eclipse.internal.xtend.expression.parser.SyntaxConstants;
import org.eclipse.internal.xtend.xtend.ast.ExtensionFile;
import org.eclipse.xtend.XtendFacade;
import org.eclipse.xtend.check.CheckUtils;
import org.eclipse.xtend.expression.EvaluationException;
import org.eclipse.xtend.expression.ExecutionContext;
import org.eclipse.xtend.shared.ui.Activator;
import org.eclipse.xtend.shared.ui.core.IXtendXpandProject;
import org.eclipse.xtend.shared.ui.core.IXtendXpandResource;
/**
* @author Dennis Hübner - Initial contribution and API
*
*/
public class ExtXptFacade {
private IProject project;
private final ExecutionContext context;
public static final String CHECK_EXT = "Checks";
public static final String STYLE_EXT = "ItemLabelProvider";
public static final String PROPOSAL_EXT = "Proposals";
public ExtXptFacade(IProject project, ExecutionContext context) {
this.project = project;
this.context = context;
}
public Object style(String extension, EObject object) {
String extendFile = path(object) + ExtXptFacade.STYLE_EXT;
Object retVal = evaluate(extendFile, extension, object);
return retVal;
}
/**
* @param extensionFile
* @param extensionName
* @param params
* @return
*/
private Object evaluate(String extensionFile, String extensionName, Object... params) {
Object retVal = null;
try {
XtendFacade facade = XtendFacade.create(context, extensionFile);
retVal = facade.call(extensionName, params);
}
catch (IllegalArgumentException e) {
// no extension specified
}
catch (EvaluationException e) {
EEPlugin.logError("Exception during extension evaluation", e);
}
catch (RuntimeException e) {
// TODO check file exists
// extension file not found
}
catch (Throwable e) {
EEPlugin.logError("Exception during extension evaluation", new RuntimeException(e));
}
return retVal;
}
// TODO split method
public List<?> proposals(EStructuralFeature feature, EObject ctx, List<?> fromList) {
String extFile = path(ctx) + ExtXptFacade.PROPOSAL_EXT;
List<?> retVal = new ArrayList<Object>();
Object eval;
if (fromList != null) {
retVal = fromList;
eval = evaluate(extFile, feature.getName(), ctx, fromList);
}
else {
eval = evaluate(extFile, feature.getName(), ctx);
}
if (eval != null) {
if (eval instanceof List<?>) {
retVal = (List<?>) eval;
}
else {
EEPlugin.logError("Returned type must be a List! File:" + extFile + ", Extension:" + feature.getName());
}
}
return retVal;
}
public Issues check(EObject rootObject) {
String checkFile = path(rootObject) + ExtXptFacade.CHECK_EXT;
List<EObject> all = new ArrayList<EObject>();
all.add(rootObject);
EObject rootContainer = EcoreUtil.getRootContainer(rootObject);
TreeIterator<EObject> iter = rootContainer.eAllContents();
while (iter.hasNext())
all.add(iter.next());
Issues issuesImpl = new IssuesImpl();
IXtendXpandProject extxptProject = Activator.getExtXptModelManager().findProject(project);
if (extxptProject != null) {
IXtendXpandResource extxptResource = extxptProject.findExtXptResource(checkFile, CheckUtils.FILE_EXTENSION);
if (extxptResource != null) {
ExtensionFile file = (ExtensionFile) extxptResource.getExtXptResource();
try {
file.check(context, all, issuesImpl, false);
}
catch (IllegalArgumentException e) {
// no extension specified
}
catch (Exception e) {
EEPlugin.logError("Exception during check evaluation", e);
}
}
}
else {
EEPlugin.logWarning("Enable Xtend/Xpand-Nature for '" + project.getName() + "' to check models.");
}
return issuesImpl;
}
private String path(EObject object) {
return object.eClass().getEPackage().getName() + SyntaxConstants.NS_DELIM;
}
public IProject getProject() {
return project;
}
}
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