/*
* Copyright (C) 2011 Red Hat, Inc. and/or its affiliates.
*
* Licensed 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.jboss.errai.codegen.meta.impl.gwt;
import java.util.ArrayList;
import java.util.List;
import org.jboss.errai.codegen.meta.MetaType;
import org.jboss.errai.codegen.meta.impl.AbstractMetaParameterizedType;
import com.google.gwt.core.ext.typeinfo.JArrayType;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.core.ext.typeinfo.JParameterizedType;
import com.google.gwt.core.ext.typeinfo.JType;
import com.google.gwt.core.ext.typeinfo.TypeOracle;
/**
* @author Mike Brock <cbrock@redhat.com>
*/
public class GWTParameterizedType extends AbstractMetaParameterizedType {
private final JParameterizedType parameterizedType;
private final TypeOracle oracle;
public GWTParameterizedType(final TypeOracle oracle, final JParameterizedType parameterizedType) {
this.parameterizedType = parameterizedType;
this.oracle = oracle;
}
@Override
public MetaType[] getTypeParameters() {
final List<MetaType> types = new ArrayList<>();
for (final JClassType parm : parameterizedType.getTypeArgs()) {
if (parm.isWildcard() != null) {
types.add(new GWTWildcardType(oracle, parm.isWildcard()));
}
else if (parm.isTypeParameter() != null) {
types.add(new GWTTypeVariable(oracle, parm.isTypeParameter()));
}
else if (parm.isArray() != null
&& isInnerMostComponentTypeParameter(parm.isArray())) {
// is generic array. Erase to Object[]
types.add(GWTClass.newInstance(oracle, parm.isArray().getErasedType()));
}
else if (parm.isClassOrInterface() != null
|| parm.isEnum() != null
|| parm.isPrimitive() != null
|| parm.isRawType() != null
|| parm.isArray() != null
|| parm.isAnnotation() != null) {
types.add(GWTClass.newInstance(oracle, parm));
}
else {
throw new IllegalArgumentException("Unsupported kind of type parameter " + parm + " in type " + parameterizedType.getName());
}
}
return types.toArray(new MetaType[types.size()]);
}
private boolean isInnerMostComponentTypeParameter(final JArrayType parm) {
final JType componentType = parm.isArray().getComponentType();
if (componentType.isArray() != null) {
return isInnerMostComponentTypeParameter(componentType.isArray());
}
else {
return componentType.isTypeParameter() != null;
}
}
@Override
public MetaType getOwnerType() {
return GWTClass.newInstance(oracle, parameterizedType.getEnclosingType());
}
@Override
public MetaType getRawType() {
return GWTClass.newInstance(oracle, parameterizedType.getRawType());
}
@Override
public String getName() {
return parameterizedType.getParameterizedQualifiedSourceName();
}
}