/*******************************************************************************
* Copyright (c) 2006, 2009 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.compiler.apt.model;
import javax.lang.model.element.Element;
import javax.lang.model.type.TypeKind;
import javax.lang.model.type.TypeMirror;
import javax.lang.model.type.TypeVariable;
import javax.lang.model.type.TypeVisitor;
import org.eclipse.jdt.internal.compiler.apt.dispatch.BaseProcessingEnvImpl;
import org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding;
import org.eclipse.jdt.internal.compiler.lookup.TagBits;
import org.eclipse.jdt.internal.compiler.lookup.TypeBinding;
import org.eclipse.jdt.internal.compiler.lookup.TypeVariableBinding;
/**
* @author OThomann
*
*/
public class TypeVariableImpl extends TypeMirrorImpl implements TypeVariable {
public TypeVariableImpl(BaseProcessingEnvImpl env, TypeVariableBinding binding) {
super(env, binding);
}
/* (non-Javadoc)
* @see javax.lang.model.type.TypeVariable#asElement()
*/
@Override
public Element asElement() {
return _env.getFactory().newElement(this._binding);
}
/* (non-Javadoc)
* @see javax.lang.model.type.TypeVariable#getLowerBound()
*/
@Override
public TypeMirror getLowerBound() {
// TODO might be more complex than this
return this._env.getFactory().getNullType();
}
/* (non-Javadoc)
* @see javax.lang.model.type.TypeVariable#getUpperBound()
*/
@Override
public TypeMirror getUpperBound() {
TypeVariableBinding typeVariableBinding = (TypeVariableBinding) this._binding;
TypeBinding firstBound = typeVariableBinding.firstBound;
ReferenceBinding[] superInterfaces = typeVariableBinding.superInterfaces;
if (firstBound == null || superInterfaces.length == 0) {
// no explicit bound
return _env.getFactory().newTypeMirror(typeVariableBinding.upperBound());
}
if (firstBound != null && superInterfaces.length == 1 && superInterfaces[0] == firstBound) {
// only one bound that is an interface
return _env.getFactory().newTypeMirror(typeVariableBinding.upperBound());
}
return this._env.getFactory().newDeclaredType((TypeVariableBinding) this._binding);
}
/* (non-Javadoc)
* @see javax.lang.model.type.TypeMirror#accept(javax.lang.model.type.TypeVisitor, java.lang.Object)
*/
@Override
public <R, P> R accept(TypeVisitor<R, P> v, P p) {
return v.visitTypeVariable(this, p);
}
@Override
public TypeKind getKind()
{
TypeVariableBinding variableBinding = (TypeVariableBinding) _binding;
if ((!variableBinding.isValidBinding() || ((variableBinding.tagBits & TagBits.HasMissingType) != 0))) {
return TypeKind.ERROR;
}
return TypeKind.TYPEVAR;
}
}