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/*******************************************************************************
* Copyright (c) 2005-2009 itemis AG (http://www.itemis.eu) 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
*
*******************************************************************************/
package org.eclipse.xtend.typesystem.emf;
import java.lang.reflect.Method;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EClassifier;
import org.eclipse.emf.ecore.EDataType;
import org.eclipse.emf.ecore.EEnum;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EOperation;
import org.eclipse.emf.ecore.EParameter;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.internal.xtend.type.baseimpl.FeatureImpl;
import org.eclipse.internal.xtend.type.baseimpl.OperationImpl;
import org.eclipse.internal.xtend.type.baseimpl.PropertyImpl;
import org.eclipse.internal.xtend.util.StringHelper;
import org.eclipse.xtend.typesystem.AbstractTypeImpl;
import org.eclipse.xtend.typesystem.Feature;
import org.eclipse.xtend.typesystem.Type;
public class EClassType extends AbstractTypeImpl {
private final static Log log = LogFactory.getLog(EClassType.class);
private EmfRegistryMetaModel emfMetaModel;
private EClass eClass;
public EClassType(final EmfRegistryMetaModel model, final String name, final EClass class1) {
super(model.getTypeSystem(), name);
emfMetaModel = model;
eClass = class1;
}
@Override
public Feature[] getContributedFeatures() {
final Set<FeatureImpl> result = new HashSet<FeatureImpl>();
// Attributes
List<EStructuralFeature> list = eClass.getEStructuralFeatures();
for (final EStructuralFeature feature : list) {
final Type t = emfMetaModel.getTypeForETypedElement(feature);
if (t == null) {
log.warn("Couldn't resolve type for " + getTypeName(feature.getEType()));
}
else {
result.add(new PropertyImpl(this, feature.getName(), t) {
public Object get(final Object target) {
return ((EObject) target).eGet(feature);
}
@Override
public void set(final Object target, Object newValue) {
if (feature.isChangeable() && !feature.isUnsettable() && !feature.isDerived()) {
if (feature.getEType() instanceof EDataType && !(feature.getEType() instanceof EEnum)) {
final EDataType dt = (EDataType) feature.getEType();
newValue = getReturnType().convert(newValue, dt.getInstanceClass());
}
((EObject) target).eSet(feature, newValue);
}
else
throw new UnsupportedOperationException("setting property '" + feature.getName()
+ "' is not allowed!");
}
});
}
}
// Operations
final List operations = eClass.getEOperations();
for (final Iterator iter = operations.iterator(); iter.hasNext();) {
final EOperation op = (EOperation) iter.next();
final EList emfParams = op.getEParameters();
final Type[] paramTypes = new Type[emfParams.size()];
boolean errors = false;
for (int i = 0, x = emfParams.size(); i < x; i++) {
final EParameter param = (EParameter) emfParams.get(i);
paramTypes[i] = emfMetaModel.getTypeForETypedElement(param);
if (paramTypes[i] == null) {
log.warn("Couldn't resolve type for " + getTypeName(param.getEType()));
errors = true;
}
}
final Type t = emfMetaModel.getTypeForETypedElement(op);
if (t == null) {
log.warn("Couldn't resolve type for " + getTypeName(op.getEType()));
errors = true;
}
if (!errors) {
result.add(new OperationImpl(this, op.getName(), t, paramTypes) {
@Override
protected Object evaluateInternal(final Object target, final Object[] params) {
final Class[] paramClasses = new Class[emfParams.size()];
for (int i = 0, x = emfParams.size(); i < x; i++) {
final EParameter param = (EParameter) emfParams.get(i);
if (param.isMany()) {
paramClasses[i] = EList.class;
}
else {
paramClasses[i] = param.getEType().getInstanceClass();
}
params[i] = getParameterTypes().get(i).convert(params[i], paramClasses[i]);
}
try {
final Method m = target.getClass().getMethod(getName(), paramClasses);
return m.invoke(target, params);
}
catch (final Exception e) {
throw new RuntimeException(e);
}
}
});
}
}
// setter
for (final EStructuralFeature feature : eClass.getEStructuralFeatures()) {
final Type t = emfMetaModel.getTypeForETypedElement(feature);
if (t == null) {
log.warn("Couldn't resolve type for " + getTypeName(feature.getEType()));
}
else {
if (feature.isChangeable() && !feature.isDerived()) { // !feature.isUnsettable()
// &&
result.add(new OperationImpl(this, "set" + StringHelper.firstUpper(feature.getName()), this,
new Type[] { t }) {
@Override
protected Object evaluateInternal(final Object target, final Object[] params) {
Object newValue = params[0];
if (newValue != null && feature.getEType() instanceof EDataType
&& !(feature.getEType() instanceof EEnum)) {
final EDataType dt = (EDataType) feature.getEType();
newValue = getParameterTypes().get(0).convert(newValue, dt.getInstanceClass());
}
((EObject) target).eSet(feature, newValue);
return target;
}
});
}
}
}
return result.toArray(new Feature[result.size()]);
}
private String getTypeName(EClassifier type) {
if (type == null)
return "null";
return type.getName();
}
public boolean isInstance(final Object o) {
return eClass.isInstance(o);
}
public Object newInstance() {
return eClass.getEPackage().getEFactoryInstance().create(eClass);
}
@Override
protected Set<Type> internalGetSuperTypes() {
final EList st = eClass.getESuperTypes();
final Set<Type> result = new HashSet<Type>();
for (final Iterator iter = st.iterator(); iter.hasNext();) {
final EClass element = (EClass) iter.next();
result.add(emfMetaModel.getTypeForEClassifier(element));
}
result.add(emfMetaModel.getEobjectType());
return result;
}
@Override
public boolean isAbstract() {
return eClass.isAbstract();
}
}
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