org.eclipse.jdt.core/dom/org/eclipse/jdt/core/dom/WildcardType.java - gerrit/aspectj/org.aspectj.shadows - Git at Google

 /*******************************************************************************
  * Copyright (c) 2003, 2005 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.core.dom;

 import java.util.ArrayList;
 import java.util.List;

 /**
  * Type node for a wildcard type (added in JLS3 API).
  * <pre>
  * WildcardType:
  *    <b>?</b> [ ( <b>extends</b> | <b>super</b>) Type ]
  * </pre>
  * <p>
  * Not all node arrangements will represent legal Java constructs. In particular,
  * it is nonsense if a wildcard type node appears anywhere other than as an
  * argument of a <code>ParameterizedType</code> node.
  * </p>
  *
  * @since 3.1
  */
 public class WildcardType extends Type {

 	/**
 	 * The "bound" structural property of this node type.
 	 */
 	public static final ChildPropertyDescriptor BOUND_PROPERTY =
 		new ChildPropertyDescriptor(WildcardType.class, "bound", Type.class, OPTIONAL, CYCLE_RISK); //$NON-NLS-1$

 	/**
 	 * The "upperBound" structural property of this node type.
 	 */
 	public static final SimplePropertyDescriptor UPPER_BOUND_PROPERTY =
 		new SimplePropertyDescriptor(WildcardType.class, "upperBound", boolean.class, MANDATORY); //$NON-NLS-1$

 	/**
 	 * A list of property descriptors (element type:
 	 * {@link StructuralPropertyDescriptor}),
 	 * or null if uninitialized.
 	 */
 	private static final List PROPERTY_DESCRIPTORS;

 	static {
 		List propertyList = new ArrayList(3);
 		createPropertyList(WildcardType.class, propertyList);
 		addProperty(BOUND_PROPERTY, propertyList);
 		addProperty(UPPER_BOUND_PROPERTY, propertyList);
 		PROPERTY_DESCRIPTORS = reapPropertyList(propertyList);
 	}

 	/**
 	 * Returns a list of structural property descriptors for this node type.
 	 * Clients must not modify the result.
 	 *
 	 * @param apiLevel the API level; one of the
 	 * <code>AST.JLS&ast;</code> constants

 	 * @return a list of property descriptors (element type:
 	 * {@link StructuralPropertyDescriptor})
 	 */
 	public static List propertyDescriptors(int apiLevel) {
 		return PROPERTY_DESCRIPTORS;
 	}

 	/**
 	 * The optional type bound node; <code>null</code> if none;
 	 * defaults to none.
 	 */
 	private Type optionalBound = null;

 	/**
 	 * Indicates whether the wildcard bound is an upper bound
 	 * ("extends") as opposed to a lower bound ("super").
 	 * Defaults to <code>true</code> initially.
 	 */
 	private boolean isUpperBound = true;

 	/**
 	 * Creates a new unparented node for a wildcard type owned by the
 	 * given AST. By default, no upper bound.
 	 * <p>
 	 * N.B. This constructor is package-private.
 	 * </p>
 	 *
 	 * @param ast the AST that is to own this node
 	 */
 	WildcardType(AST ast) {
 		super(ast);
 	    unsupportedIn2();
 	}

 	/* (omit javadoc for this method)
 	 * Method declared on ASTNode.
 	 */
 	final List internalStructuralPropertiesForType(int apiLevel) {
 		return propertyDescriptors(apiLevel);
 	}

 	/* (omit javadoc for this method)
 	 * Method declared on ASTNode.
 	 */
 	final boolean internalGetSetBooleanProperty(SimplePropertyDescriptor property, boolean get, boolean value) {
 		if (property == UPPER_BOUND_PROPERTY) {
 			if (get) {
 				return isUpperBound();
 			} else {
 				setUpperBound(value);
 				return false;
 			}
 		}
 		// allow default implementation to flag the error
 		return super.internalGetSetBooleanProperty(property, get, value);
 	}

 	/* (omit javadoc for this method)
 	 * Method declared on ASTNode.
 	 */
 	final ASTNode internalGetSetChildProperty(ChildPropertyDescriptor property, boolean get, ASTNode child) {
 		if (property == BOUND_PROPERTY) {
 			if (get) {
 				return getBound();
 			} else {
 				setBound((Type) child);
 				return null;
 			}
 		}
 		// allow default implementation to flag the error
 		return super.internalGetSetChildProperty(property, get, child);
 	}

 	/* (omit javadoc for this method)
 	 * Method declared on ASTNode.
 	 */
 	final int getNodeType0() {
 		return WILDCARD_TYPE;
 	}

 	/* (omit javadoc for this method)
 	 * Method declared on ASTNode.
 	 */
 	ASTNode clone0(AST target) {
 		WildcardType result = new WildcardType(target);
 		result.setSourceRange(this.getStartPosition(), this.getLength());
 		result.setBound((Type) ASTNode.copySubtree(target, getBound()), isUpperBound());
 		return result;
 	}

 	/* (omit javadoc for this method)
 	 * Method declared on ASTNode.
 	 */
 	final boolean subtreeMatch0(ASTMatcher matcher, Object other) {
 		// dispatch to correct overloaded match method
 		return matcher.match(this, other);
 	}

 	/* (omit javadoc for this method)
 	 * Method declared on ASTNode.
 	 */
 	void accept0(ASTVisitor visitor) {
 		boolean visitChildren = visitor.visit(this);
 		if (visitChildren) {
 			// visit children in normal left to right reading order
 			acceptChild(visitor, getBound());
 		}
 		visitor.endVisit(this);
 	}

 	/**
 	 * Returns whether this wildcard type is an upper bound
 	 * ("extends") as opposed to a lower bound ("super").
 	 * <p>
 	 * Note that this property is irrelevant for wildcards
 	 * that do not have a bound.
 	 * </p>
 	 *
 	 * @return <code>true</code> if an upper bound,
 	 *    and <code>false</code> if a lower bound
 	 * @see #setBound(Type)
 	 */
 	public boolean isUpperBound() {
 		return this.isUpperBound;
 	}

 	/**
 	 * Returns the bound of this wildcard type if it has one.
 	 * If {@link #isUpperBound isUpperBound} returns true, this
 	 * is an upper bound ("? extends B"); if it returns false, this
 	 * is a lower bound ("? super B").
 	 *
 	 * @return the bound of this wildcard type, or <code>null</code>
 	 * if none
 	 * @see #setBound(Type)
 	 */
 	public Type getBound() {
 		return this.optionalBound;
 	}

 	/**
 	 * Sets the bound of this wildcard type to the given type and
 	 * marks it as an upper or a lower bound. The method is
 	 * equivalent to calling <code>setBound(type); setUpperBound(isUpperBound)</code>.
 	 *
 	 * @param type the new bound of this wildcard type, or <code>null</code>
 	 * if none
 	 * @param isUpperBound <code>true</code> for an upper bound ("? extends B"),
 	 * and <code>false</code> for a lower bound ("? super B")
 	 * @exception IllegalArgumentException if:
 	 * <ul>
 	 * <li>the node belongs to a different AST</li>
 	 * <li>the node already has a parent</li>
 	 * </ul>
 	 * @see #getBound()
 	 * @see #isUpperBound()
 	 */
 	public void setBound(Type type, boolean isUpperBound) {
 		setBound(type);
 		setUpperBound(isUpperBound);
 	}

 	/**
 	 * Sets the bound of this wildcard type to the given type.
 	 *
 	 * @param type the new bound of this wildcard type, or <code>null</code>
 	 * if none
 	 * @exception IllegalArgumentException if:
 	 * <ul>
 	 * <li>the node belongs to a different AST</li>
 	 * <li>the node already has a parent</li>
 	 * </ul>
 	 * @see #getBound()
 	 */
 	public void setBound(Type type) {
 		ASTNode oldChild = this.optionalBound;
 		preReplaceChild(oldChild, type, BOUND_PROPERTY);
 		this.optionalBound = type;
 		postReplaceChild(oldChild, type, BOUND_PROPERTY);
 	}

 	/**
 	 * Sets whether this wildcard type is an upper bound
 	 * ("extends") as opposed to a lower bound ("super").
 	 *
 	 * @param isUpperBound <code>true</code> if an upper bound,
 	 *    and <code>false</code> if a lower bound
 	 * @see #isUpperBound()
 	 */
 	public void setUpperBound(boolean isUpperBound) {
 		preValueChange(UPPER_BOUND_PROPERTY);
 		this.isUpperBound = isUpperBound;
 		postValueChange(UPPER_BOUND_PROPERTY);
 	}

 	/* (omit javadoc for this method)
 	 * Method declared on ASTNode.
 	 */
 	int memSize() {
 		return BASE_NODE_SIZE + 2 * 4;
 	}

 	/* (omit javadoc for this method)
 	 * Method declared on ASTNode.
 	 */
 	int treeSize() {
 		return
 		memSize()
 		+ (this.optionalBound == null ? 0 : getBound().treeSize());
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2003, 2005 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.core.dom;

	import java.util.ArrayList;
	import java.util.List;

	/**
	* Type node for a wildcard type (added in JLS3 API).
	* <pre>
	* WildcardType:
	* <b>?</b> [ ( <b>extends</b> \| <b>super</b>) Type ]
	* </pre>
	* <p>
	* Not all node arrangements will represent legal Java constructs. In particular,
	* it is nonsense if a wildcard type node appears anywhere other than as an
	* argument of a <code>ParameterizedType</code> node.
	* </p>
	*
	* @since 3.1
	*/
	public class WildcardType extends Type {

	/**
	* The "bound" structural property of this node type.
	*/
	public static final ChildPropertyDescriptor BOUND_PROPERTY =
	new ChildPropertyDescriptor(WildcardType.class, "bound", Type.class, OPTIONAL, CYCLE_RISK); //$NON-NLS-1$

	/**
	* The "upperBound" structural property of this node type.
	*/
	public static final SimplePropertyDescriptor UPPER_BOUND_PROPERTY =
	new SimplePropertyDescriptor(WildcardType.class, "upperBound", boolean.class, MANDATORY); //$NON-NLS-1$

	/**
	* A list of property descriptors (element type:
	* {@link StructuralPropertyDescriptor}),
	* or null if uninitialized.
	*/
	private static final List PROPERTY_DESCRIPTORS;

	static {
	List propertyList = new ArrayList(3);
	createPropertyList(WildcardType.class, propertyList);
	addProperty(BOUND_PROPERTY, propertyList);
	addProperty(UPPER_BOUND_PROPERTY, propertyList);
	PROPERTY_DESCRIPTORS = reapPropertyList(propertyList);
	}

	/**
	* Returns a list of structural property descriptors for this node type.
	* Clients must not modify the result.
	*
	* @param apiLevel the API level; one of the
	* <code>AST.JLS&ast;</code> constants

	* @return a list of property descriptors (element type:
	* {@link StructuralPropertyDescriptor})
	*/
	public static List propertyDescriptors(int apiLevel) {
	return PROPERTY_DESCRIPTORS;
	}

	/**
	* The optional type bound node; <code>null</code> if none;
	* defaults to none.
	*/
	private Type optionalBound = null;

	/**
	* Indicates whether the wildcard bound is an upper bound
	* ("extends") as opposed to a lower bound ("super").
	* Defaults to <code>true</code> initially.
	*/
	private boolean isUpperBound = true;

	/**
	* Creates a new unparented node for a wildcard type owned by the
	* given AST. By default, no upper bound.
	* <p>
	* N.B. This constructor is package-private.
	* </p>
	*
	* @param ast the AST that is to own this node
	*/
	WildcardType(AST ast) {
	super(ast);
	unsupportedIn2();
	}

	/* (omit javadoc for this method)
	* Method declared on ASTNode.
	*/
	final List internalStructuralPropertiesForType(int apiLevel) {
	return propertyDescriptors(apiLevel);
	}

	/* (omit javadoc for this method)
	* Method declared on ASTNode.
	*/
	final boolean internalGetSetBooleanProperty(SimplePropertyDescriptor property, boolean get, boolean value) {
	if (property == UPPER_BOUND_PROPERTY) {
	if (get) {
	return isUpperBound();
	} else {
	setUpperBound(value);
	return false;
	}
	}
	// allow default implementation to flag the error
	return super.internalGetSetBooleanProperty(property, get, value);
	}

	/* (omit javadoc for this method)
	* Method declared on ASTNode.
	*/
	final ASTNode internalGetSetChildProperty(ChildPropertyDescriptor property, boolean get, ASTNode child) {
	if (property == BOUND_PROPERTY) {
	if (get) {
	return getBound();
	} else {
	setBound((Type) child);
	return null;
	}
	}
	// allow default implementation to flag the error
	return super.internalGetSetChildProperty(property, get, child);
	}

	/* (omit javadoc for this method)
	* Method declared on ASTNode.
	*/
	final int getNodeType0() {
	return WILDCARD_TYPE;
	}

	/* (omit javadoc for this method)
	* Method declared on ASTNode.
	*/
	ASTNode clone0(AST target) {
	WildcardType result = new WildcardType(target);
	result.setSourceRange(this.getStartPosition(), this.getLength());
	result.setBound((Type) ASTNode.copySubtree(target, getBound()), isUpperBound());
	return result;
	}

	/* (omit javadoc for this method)
	* Method declared on ASTNode.
	*/
	final boolean subtreeMatch0(ASTMatcher matcher, Object other) {
	// dispatch to correct overloaded match method
	return matcher.match(this, other);
	}

	/* (omit javadoc for this method)
	* Method declared on ASTNode.
	*/
	void accept0(ASTVisitor visitor) {
	boolean visitChildren = visitor.visit(this);
	if (visitChildren) {
	// visit children in normal left to right reading order
	acceptChild(visitor, getBound());
	}
	visitor.endVisit(this);
	}

	/**
	* Returns whether this wildcard type is an upper bound
	* ("extends") as opposed to a lower bound ("super").
	* <p>
	* Note that this property is irrelevant for wildcards
	* that do not have a bound.
	* </p>
	*
	* @return <code>true</code> if an upper bound,
	* and <code>false</code> if a lower bound
	* @see #setBound(Type)
	*/
	public boolean isUpperBound() {
	return this.isUpperBound;
	}

	/**
	* Returns the bound of this wildcard type if it has one.
	* If {@link #isUpperBound isUpperBound} returns true, this
	* is an upper bound ("? extends B"); if it returns false, this
	* is a lower bound ("? super B").
	*
	* @return the bound of this wildcard type, or <code>null</code>
	* if none
	* @see #setBound(Type)
	*/
	public Type getBound() {
	return this.optionalBound;
	}

	/**
	* Sets the bound of this wildcard type to the given type and
	* marks it as an upper or a lower bound. The method is
	* equivalent to calling <code>setBound(type); setUpperBound(isUpperBound)</code>.
	*
	* @param type the new bound of this wildcard type, or <code>null</code>
	* if none
	* @param isUpperBound <code>true</code> for an upper bound ("? extends B"),
	* and <code>false</code> for a lower bound ("? super B")
	* @exception IllegalArgumentException if:
	* <ul>
	* <li>the node belongs to a different AST</li>
	* <li>the node already has a parent</li>
	* </ul>
	* @see #getBound()
	* @see #isUpperBound()
	*/
	public void setBound(Type type, boolean isUpperBound) {
	setBound(type);
	setUpperBound(isUpperBound);
	}

	/**
	* Sets the bound of this wildcard type to the given type.
	*
	* @param type the new bound of this wildcard type, or <code>null</code>
	* if none
	* @exception IllegalArgumentException if:
	* <ul>
	* <li>the node belongs to a different AST</li>
	* <li>the node already has a parent</li>
	* </ul>
	* @see #getBound()
	*/
	public void setBound(Type type) {
	ASTNode oldChild = this.optionalBound;
	preReplaceChild(oldChild, type, BOUND_PROPERTY);
	this.optionalBound = type;
	postReplaceChild(oldChild, type, BOUND_PROPERTY);
	}

	/**
	* Sets whether this wildcard type is an upper bound
	* ("extends") as opposed to a lower bound ("super").
	*
	* @param isUpperBound <code>true</code> if an upper bound,
	* and <code>false</code> if a lower bound
	* @see #isUpperBound()
	*/
	public void setUpperBound(boolean isUpperBound) {
	preValueChange(UPPER_BOUND_PROPERTY);
	this.isUpperBound = isUpperBound;
	postValueChange(UPPER_BOUND_PROPERTY);
	}

	/* (omit javadoc for this method)
	* Method declared on ASTNode.
	*/
	int memSize() {
	return BASE_NODE_SIZE + 2 * 4;
	}

	/* (omit javadoc for this method)
	* Method declared on ASTNode.
	*/
	int treeSize() {
	return
	memSize()
	+ (this.optionalBound == null ? 0 : getBound().treeSize());
	}
	}