org.aspectj.weaver.WildcardedUnresolvedType Maven / Gradle / Ivy
/* *******************************************************************
* Copyright (c) 2008 Contributors
* 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:
* Andy Clement initial implementation
* ******************************************************************/
package org.aspectj.weaver;
/**
* Represents a wildcarded bound for a generic type, this can be unbounded '?' or bounded via extends '? extends Foo' or
* super '? super Foo'. The signature for a ? is in fact "*" and the erasure signature is the upper bound which defaults
* to java.lang.Object if nothing is specified. On resolution, this becomes a BoundedReferenceType
*
* @author Andy Clement
*/
public class WildcardedUnresolvedType extends UnresolvedType {
// TODO does not cope with extra bounds '? extends A & B & C'
public static final int UNBOUND = 0;
public static final int EXTENDS = 1;
public static final int SUPER = 2;
public static final WildcardedUnresolvedType QUESTIONMARK = new WildcardedUnresolvedType("*", UnresolvedType.OBJECT, null);
private int boundKind = UNBOUND; // UNBOUND, EXTENDS, SUPER
private UnresolvedType lowerBound;
private UnresolvedType upperBound;
public WildcardedUnresolvedType(String signature, UnresolvedType upperBound, UnresolvedType lowerBound) {
super(signature, (upperBound == null ? UnresolvedType.OBJECT.signature : upperBound.signatureErasure));
this.typeKind = TypeKind.WILDCARD;
this.upperBound = upperBound;
this.lowerBound = lowerBound;
if (signature.charAt(0) == '-') boundKind = SUPER;
if (signature.charAt(0) == '+') boundKind = EXTENDS;
}
public UnresolvedType getUpperBound() {
return upperBound;
}
public UnresolvedType getLowerBound() {
return lowerBound;
}
public boolean isExtends() {
return boundKind == EXTENDS;
}
public boolean isSuper() {
return boundKind == SUPER;
}
public boolean isUnbound() {
return boundKind == UNBOUND;
}
}