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/*******************************************************************************
* Copyright (c) 2004, 2019 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.core.dom;
/**
* Abstract base class of AST nodes that represent annotations.
* <pre>
* Annotation:
* NormalAnnotation
* MarkerAnnotation
* SingleMemberAnnotation
* </pre>
* @since 3.1
*/
@SuppressWarnings("rawtypes")
public abstract class Annotation extends Expression implements IExtendedModifier {
/**
* Returns structural property descriptor for the "typeName" property
* of this node (child type: {@link Name}).
*
* @return the property descriptor
*/
abstract ChildPropertyDescriptor internalTypeNameProperty();
/**
* Returns structural property descriptor for the "typeName" property
* of this node (child type: {@link Name}).
*
* @return the property descriptor
*/
public final ChildPropertyDescriptor getTypeNameProperty() {
return internalTypeNameProperty();
}
/**
* Creates and returns a structural property descriptor for the
* "typeName" property declared on the given concrete node type (child type: {@link Name}).
*
* @return the property descriptor
*/
static final ChildPropertyDescriptor internalTypeNamePropertyFactory(Class nodeClass) {
return new ChildPropertyDescriptor(nodeClass, "typeName", Name.class, MANDATORY, NO_CYCLE_RISK); //$NON-NLS-1$
}
/**
* The annotation type name; lazily initialized; defaults to an unspecified,
* legal Java identifier.
*/
Name typeName = null;
/**
* Creates a new AST node for an annotation node owned by the
* given AST.
* <p>
* N.B. This constructor is package-private.
* </p>
*
* @param ast the AST that is to own this node
*/
Annotation(AST ast) {
super(ast);
}
/**
* @see IExtendedModifier#isModifier()
*/
@Override
public boolean isModifier() {
return false;
}
/**
* @see IExtendedModifier#isAnnotation()
*/
@Override
public boolean isAnnotation() {
return true;
}
/**
* Returns the annotation type name of this annotation.
*
* @return the annotation type name
*/
public Name getTypeName() {
if (this.typeName == null) {
// lazy init must be thread-safe for readers
synchronized (this) {
if (this.typeName == null) {
preLazyInit();
this.typeName = new SimpleName(this.ast);
postLazyInit(this.typeName, internalTypeNameProperty());
}
}
}
return this.typeName;
}
/**
* Sets the annotation type name of this annotation.
*
* @param typeName the annotation type name
* @exception IllegalArgumentException if:
* <ul>
* <li>the node belongs to a different AST</li>
* <li>the node already has a parent</li>
* </ul>
*/
public void setTypeName(Name typeName) {
if (typeName == null) {
throw new IllegalArgumentException();
}
ChildPropertyDescriptor p = internalTypeNameProperty();
ASTNode oldChild = this.typeName;
preReplaceChild(oldChild, typeName, p);
this.typeName = typeName;
postReplaceChild(oldChild, typeName, p);
}
/**
* Returns whether this is a normal annotation
* ({@link NormalAnnotation}).
*
* @return <code>true</code> if this is a normal annotation,
* and <code>false</code> otherwise
*/
public boolean isNormalAnnotation() {
return (this instanceof NormalAnnotation);
}
/**
* Returns whether this is a marker annotation
* ({@link MarkerAnnotation}).
*
* @return <code>true</code> if this is a marker annotation,
* and <code>false</code> otherwise
*/
public boolean isMarkerAnnotation() {
return (this instanceof MarkerAnnotation);
}
/**
* Returns whether this is a single member annotation.
* ({@link SingleMemberAnnotation}).
*
* @return <code>true</code> if this is a single member annotation,
* and <code>false</code> otherwise
*/
public boolean isSingleMemberAnnotation() {
return (this instanceof SingleMemberAnnotation);
}
@Override
int memSize() {
return BASE_NODE_SIZE + 1 * 4;
}
/**
* Resolves and returns the resolved annotation for this annotation.
* <p>
* Note that bindings (which includes resolved annotations) are generally unavailable unless
* requested when the AST is being built.
* </p>
*
* @return the resolved annotation, or <code>null</code> if the annotation cannot be resolved
* @since 3.2
*/
public IAnnotationBinding resolveAnnotationBinding() {
return this.ast.getBindingResolver().resolveAnnotation(this);
}
}
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