org.eclipse.jdt.core/dom/org/eclipse/jdt/core/dom/InstanceofExpression.java - gerrit/objectteams/org.eclipse.objectteams - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2020 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;

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

 import org.eclipse.jdt.internal.core.dom.util.DOMASTUtil;

 /**
  * Instanceof expression AST node type.
  * <pre>
  * InstanceofExpression:
  *    Expression <b>instanceof</b> Type
  * </pre>
  *
  * @since 2.0
  * @noinstantiate This class is not intended to be instantiated by clients.
  */
 @SuppressWarnings("rawtypes")
 public class InstanceofExpression extends Expression {

 	/**
 	 * The "leftOperand" structural property of this node type (child type: {@link Expression}).
 	 * @since 3.0
 	 */
 	public static final ChildPropertyDescriptor LEFT_OPERAND_PROPERTY =
 		new ChildPropertyDescriptor(InstanceofExpression.class, "leftOperand", Expression.class, MANDATORY, CYCLE_RISK); //$NON-NLS-1$

 	/**
 	 * The "rightOperand" structural property of this node type (child type: {@link Type}).
 	 * @since 3.0
 	 */
 	public static final ChildPropertyDescriptor RIGHT_OPERAND_PROPERTY =
 		new ChildPropertyDescriptor(InstanceofExpression.class, "rightOperand", Type.class, MANDATORY, CYCLE_RISK); //$NON-NLS-1$

 	/**
 	 * The "patternVariable" structural property of this node type (child type: {@link SimpleName}) (added in JLS14 API).
 	 * This contains the name of the instance variable.
 	 * @noreference This property is not intended to be referenced by clients as it is a part of Java preview feature.
 	 * @since 3.22
 	 */
 	public static final ChildPropertyDescriptor PATTERN_VARIABLE_PROPERTY =
 		new ChildPropertyDescriptor(InstanceofExpression.class, "patternVariable", SimpleName.class, OPTIONAL, NO_CYCLE_RISK); //$NON-NLS-1$
 	/**
 	 * A list of property descriptors (element type:
 	 * {@link StructuralPropertyDescriptor}),
 	 * or null if uninitialized.
 	 */
 	private static final List PROPERTY_DESCRIPTORS;

 	/**
 	 * A list of property descriptors (element type:
 	 * {@link StructuralPropertyDescriptor}),
 	 * or null if uninitialized.
 	 */
 	private static final List PROPERTY_DESCRIPTORS_14;

 	static {
 		List properyList = new ArrayList(3);
 		createPropertyList(InstanceofExpression.class, properyList);
 		addProperty(LEFT_OPERAND_PROPERTY, properyList);
 		addProperty(RIGHT_OPERAND_PROPERTY, properyList);
 		PROPERTY_DESCRIPTORS = reapPropertyList(properyList);
 		properyList = new ArrayList(4);
 		createPropertyList(InstanceofExpression.class, properyList);
 		addProperty(LEFT_OPERAND_PROPERTY, properyList);
 		addProperty(RIGHT_OPERAND_PROPERTY, properyList);
 		addProperty(PATTERN_VARIABLE_PROPERTY, properyList);
 		PROPERTY_DESCRIPTORS_14 = reapPropertyList(properyList);
 	}

 	/**
 	 * 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*</code> constants

 	 * @return a list of property descriptors (element type:
 	 * {@link StructuralPropertyDescriptor})
 	 * @since 3.0
 	 */
 	public static List propertyDescriptors(int apiLevel) {
 		return propertyDescriptors(apiLevel, false);
 	}

 	/**
 	 * 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*</code> constants
 	 * @param previewEnabled the previewEnabled flag
 	 * @return a list of property descriptors (element type:
 	 * {@link StructuralPropertyDescriptor})
 	 * @noreference This method is not intended to be referenced by clients.
 	 * @since 3.22
 	 */
 	public static List propertyDescriptors(int apiLevel, boolean previewEnabled) {
 		if (DOMASTUtil.isInstanceofExpressionPatternSupported(apiLevel, previewEnabled)) {
 			return PROPERTY_DESCRIPTORS_14;
 		}
 		return PROPERTY_DESCRIPTORS;
 	}
 	/**
 	 * The left operand; lazily initialized; defaults to an unspecified,
 	 * but legal, simple name.
 	 */
 	private Expression leftOperand = null;

 	/**
 	 * The right operand; lazily initialized; defaults to an unspecified,
 	 * but legal, simple type.
 	 */
 	private Type rightOperand = null;

 	/**
 	 * The patternVariable declaration.
 	 */
 	private SimpleName patternVariable = null;

 	/**
 	 * Creates a new AST node for an instanceof expression owned by the given
 	 * AST. By default, the node has unspecified (but legal) operator,
 	 * left and right operands.
 	 *
 	 * @param ast the AST that is to own this node
 	 */
 	InstanceofExpression(AST ast) {
 		super(ast);
 	}

 	@Override
 	final List internalStructuralPropertiesForType(int apiLevel) {
 		return propertyDescriptors(apiLevel);
 	}

 	@Override
 	final List internalStructuralPropertiesForType(int apiLevel, boolean previewEnabled) {
 		return propertyDescriptors(apiLevel, previewEnabled);
 	}

 	@Override
 	final ASTNode internalGetSetChildProperty(ChildPropertyDescriptor property, boolean get, ASTNode child) {
 		if (property == LEFT_OPERAND_PROPERTY) {
 			if (get) {
 				return getLeftOperand();
 			} else {
 				setLeftOperand((Expression) child);
 				return null;
 			}
 		}
 		if (property == RIGHT_OPERAND_PROPERTY) {
 			if (get) {
 				return getRightOperand();
 			} else {
 				setRightOperand((Type) child);
 				return null;
 			}
 		}
 		if (property == PATTERN_VARIABLE_PROPERTY) {
 			if (get) {
 				return getPatternVariable();
 			} else {
 				setPatternVariable((SimpleName) child);
 				return null;
 			}
 		}
 		// allow default implementation to flag the error
 		return super.internalGetSetChildProperty(property, get, child);
 	}

 	@Override
 	final int getNodeType0() {
 		return INSTANCEOF_EXPRESSION;
 	}

 	@Override
 	ASTNode clone0(AST target) {
 		InstanceofExpression result = new InstanceofExpression(target);
 		result.setSourceRange(getStartPosition(), getLength());
 		result.setLeftOperand((Expression) getLeftOperand().clone(target));
 		result.setRightOperand((Type) getRightOperand().clone(target));
 		if (DOMASTUtil.isInstanceofExpressionPatternSupported(target)) {
 			SimpleName pv = getPatternVariable();
 			if (pv != null) {
 				result.setPatternVariable((SimpleName) pv.clone(target));
 			}
 		}
 		return result;
 	}

 	@Override
 	final boolean subtreeMatch0(ASTMatcher matcher, Object other) {
 		// dispatch to correct overloaded match method
 		return matcher.match(this, other);
 	}

 	@Override
 	void accept0(ASTVisitor visitor) {
 		boolean visitChildren = visitor.visit(this);
 		if (visitChildren) {
 			// visit children in normal left to right reading order
 			acceptChild(visitor, getLeftOperand());
 			acceptChild(visitor, getRightOperand());
 			if (DOMASTUtil.isInstanceofExpressionPatternSupported(this.ast)) {
 				acceptChild(visitor, getPatternVariable());
 			}
 		}
 		visitor.endVisit(this);
 	}

 	/**
 	 * Returns the left operand of this instanceof expression.
 	 *
 	 * @return the left operand node
 	 */
 	public Expression getLeftOperand() {
 		if (this.leftOperand  == null) {
 			// lazy init must be thread-safe for readers
 			synchronized (this) {
 				if (this.leftOperand == null) {
 					preLazyInit();
 					this.leftOperand= new SimpleName(this.ast);
 					postLazyInit(this.leftOperand, LEFT_OPERAND_PROPERTY);
 				}
 			}
 		}
 		return this.leftOperand;
 	}

 	/**
 	 * Sets the left operand of this instanceof expression.
 	 *
 	 * @param expression the left operand node
 	 * @exception IllegalArgumentException if:
 	 * <ul>
 	 * <li>the node belongs to a different AST</li>
 	 * <li>the node already has a parent</li>
 	 * <li>a cycle in would be created</li>
 	 * </ul>
 	 */
 	public void setLeftOperand(Expression expression) {
 		if (expression == null) {
 			throw new IllegalArgumentException();
 		}
 		ASTNode oldChild = this.leftOperand;
 		preReplaceChild(oldChild, expression, LEFT_OPERAND_PROPERTY);
 		this.leftOperand = expression;
 		postReplaceChild(oldChild, expression, LEFT_OPERAND_PROPERTY);
 	}

 	/**
 	 * Returns the right operand of this instanceof expression.
 	 *
 	 * @return the right operand node
 	 */
 	public Type getRightOperand() {
 		if (this.rightOperand  == null) {
 			// lazy init must be thread-safe for readers
 			synchronized (this) {
 				if (this.rightOperand == null) {
 					preLazyInit();
 					this.rightOperand= new SimpleType(this.ast);
 					postLazyInit(this.rightOperand, RIGHT_OPERAND_PROPERTY);
 				}
 			}
 		}
 		return this.rightOperand;
 	}

 	/**
 	 * Sets the right operand of this instanceof expression.
 	 *
 	 * @param referenceType the right operand node
 	 * @exception IllegalArgumentException if:
 	 * <ul>
 	 * <li>the node belongs to a different AST</li>
 	 * <li>the node already has a parent</li>
 	 * <li>a cycle in would be created</li>
 	 * </ul>
 	 */
 	public void setRightOperand(Type referenceType) {
 		if (referenceType == null) {
 			throw new IllegalArgumentException();
 		}
 		ASTNode oldChild = this.rightOperand;
 		preReplaceChild(oldChild, referenceType, RIGHT_OPERAND_PROPERTY);
 		this.rightOperand = referenceType;
 		postReplaceChild(oldChild, referenceType, RIGHT_OPERAND_PROPERTY);
 	}

 	/**
 	 * Returns the patternVariable of this instanceof expression.
 	 *
 	 * @return the patternVariable node
 	 * @exception UnsupportedOperationException if this operation is used other than JLS15
 	 * @exception UnsupportedOperationException if this expression is used with previewEnabled flag as false
 	 * @noreference This method is not intended to be referenced by clients as it is a part of Java preview feature.
 	 * @nooverride This method is not intended to be re-implemented or extended by clients as it is a part of Java preview feature.
 	 */
 	public SimpleName getPatternVariable() {
 		supportedOnlyIn15();
 		unsupportedWithoutPreviewError();
 		return this.patternVariable;
 	}

 	/**
 	 * Sets the patternVariable of this instanceof expression.
 	 *
 	 * @param referencePatternVariable the right operand node
 	 * @exception IllegalArgumentException if:
 	 * @exception UnsupportedOperationException if this operation is used other than JLS15
 	 * @exception UnsupportedOperationException if this expression is used with previewEnabled flag as false
 	 * @noreference This method is not intended to be referenced by clients as it is a part of Java preview feature.
 	 * @nooverride This method is not intended to be re-implemented or extended by clients as it is a part of Java preview feature.
 	 */
 	public void setPatternVariable(SimpleName referencePatternVariable) {
 		supportedOnlyIn15();
 		unsupportedWithoutPreviewError();
 		if (referencePatternVariable == null) {
 			throw new IllegalArgumentException();
 		}
 		ASTNode oldChild = this.patternVariable;
 		preReplaceChild(oldChild, referencePatternVariable, PATTERN_VARIABLE_PROPERTY);
 		this.patternVariable = referencePatternVariable;
 		postReplaceChild(oldChild, referencePatternVariable, PATTERN_VARIABLE_PROPERTY);
 	}
 	@Override
 	int memSize() {
 		// treat Operator as free
 		return BASE_NODE_SIZE + 3 * 4;
 	}

 	@Override
 	int treeSize() {
 		return
 			memSize()
 			+ (this.leftOperand == null ? 0 : getLeftOperand().treeSize())
 			+ (this.rightOperand == null ? 0 : getRightOperand().treeSize())
 			+ (this.patternVariable == null ? 0 : getPatternVariable().treeSize());
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2020 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;

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

	import org.eclipse.jdt.internal.core.dom.util.DOMASTUtil;

	/**
	* Instanceof expression AST node type.
	* <pre>
	* InstanceofExpression:
	* Expression <b>instanceof</b> Type
	* </pre>
	*
	* @since 2.0
	* @noinstantiate This class is not intended to be instantiated by clients.
	*/
	@SuppressWarnings("rawtypes")
	public class InstanceofExpression extends Expression {

	/**
	* The "leftOperand" structural property of this node type (child type: {@link Expression}).
	* @since 3.0
	*/
	public static final ChildPropertyDescriptor LEFT_OPERAND_PROPERTY =
	new ChildPropertyDescriptor(InstanceofExpression.class, "leftOperand", Expression.class, MANDATORY, CYCLE_RISK); //$NON-NLS-1$

	/**
	* The "rightOperand" structural property of this node type (child type: {@link Type}).
	* @since 3.0
	*/
	public static final ChildPropertyDescriptor RIGHT_OPERAND_PROPERTY =
	new ChildPropertyDescriptor(InstanceofExpression.class, "rightOperand", Type.class, MANDATORY, CYCLE_RISK); //$NON-NLS-1$

	/**
	* The "patternVariable" structural property of this node type (child type: {@link SimpleName}) (added in JLS14 API).
	* This contains the name of the instance variable.
	* @noreference This property is not intended to be referenced by clients as it is a part of Java preview feature.
	* @since 3.22
	*/
	public static final ChildPropertyDescriptor PATTERN_VARIABLE_PROPERTY =
	new ChildPropertyDescriptor(InstanceofExpression.class, "patternVariable", SimpleName.class, OPTIONAL, NO_CYCLE_RISK); //$NON-NLS-1$
	/**
	* A list of property descriptors (element type:
	* {@link StructuralPropertyDescriptor}),
	* or null if uninitialized.
	*/
	private static final List PROPERTY_DESCRIPTORS;

	/**
	* A list of property descriptors (element type:
	* {@link StructuralPropertyDescriptor}),
	* or null if uninitialized.
	*/
	private static final List PROPERTY_DESCRIPTORS_14;

	static {
	List properyList = new ArrayList(3);
	createPropertyList(InstanceofExpression.class, properyList);
	addProperty(LEFT_OPERAND_PROPERTY, properyList);
	addProperty(RIGHT_OPERAND_PROPERTY, properyList);
	PROPERTY_DESCRIPTORS = reapPropertyList(properyList);
	properyList = new ArrayList(4);
	createPropertyList(InstanceofExpression.class, properyList);
	addProperty(LEFT_OPERAND_PROPERTY, properyList);
	addProperty(RIGHT_OPERAND_PROPERTY, properyList);
	addProperty(PATTERN_VARIABLE_PROPERTY, properyList);
	PROPERTY_DESCRIPTORS_14 = reapPropertyList(properyList);
	}

	/**
	* 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*</code> constants

	* @return a list of property descriptors (element type:
	* {@link StructuralPropertyDescriptor})
	* @since 3.0
	*/
	public static List propertyDescriptors(int apiLevel) {
	return propertyDescriptors(apiLevel, false);
	}

	/**
	* 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*</code> constants
	* @param previewEnabled the previewEnabled flag
	* @return a list of property descriptors (element type:
	* {@link StructuralPropertyDescriptor})
	* @noreference This method is not intended to be referenced by clients.
	* @since 3.22
	*/
	public static List propertyDescriptors(int apiLevel, boolean previewEnabled) {
	if (DOMASTUtil.isInstanceofExpressionPatternSupported(apiLevel, previewEnabled)) {
	return PROPERTY_DESCRIPTORS_14;
	}
	return PROPERTY_DESCRIPTORS;
	}
	/**
	* The left operand; lazily initialized; defaults to an unspecified,
	* but legal, simple name.
	*/
	private Expression leftOperand = null;

	/**
	* The right operand; lazily initialized; defaults to an unspecified,
	* but legal, simple type.
	*/
	private Type rightOperand = null;

	/**
	* The patternVariable declaration.
	*/
	private SimpleName patternVariable = null;

	/**
	* Creates a new AST node for an instanceof expression owned by the given
	* AST. By default, the node has unspecified (but legal) operator,
	* left and right operands.
	*
	* @param ast the AST that is to own this node
	*/
	InstanceofExpression(AST ast) {
	super(ast);
	}

	@Override
	final List internalStructuralPropertiesForType(int apiLevel) {
	return propertyDescriptors(apiLevel);
	}

	@Override
	final List internalStructuralPropertiesForType(int apiLevel, boolean previewEnabled) {
	return propertyDescriptors(apiLevel, previewEnabled);
	}

	@Override
	final ASTNode internalGetSetChildProperty(ChildPropertyDescriptor property, boolean get, ASTNode child) {
	if (property == LEFT_OPERAND_PROPERTY) {
	if (get) {
	return getLeftOperand();
	} else {
	setLeftOperand((Expression) child);
	return null;
	}
	}
	if (property == RIGHT_OPERAND_PROPERTY) {
	if (get) {
	return getRightOperand();
	} else {
	setRightOperand((Type) child);
	return null;
	}
	}
	if (property == PATTERN_VARIABLE_PROPERTY) {
	if (get) {
	return getPatternVariable();
	} else {
	setPatternVariable((SimpleName) child);
	return null;
	}
	}
	// allow default implementation to flag the error
	return super.internalGetSetChildProperty(property, get, child);
	}

	@Override
	final int getNodeType0() {
	return INSTANCEOF_EXPRESSION;
	}

	@Override
	ASTNode clone0(AST target) {
	InstanceofExpression result = new InstanceofExpression(target);
	result.setSourceRange(getStartPosition(), getLength());
	result.setLeftOperand((Expression) getLeftOperand().clone(target));
	result.setRightOperand((Type) getRightOperand().clone(target));
	if (DOMASTUtil.isInstanceofExpressionPatternSupported(target)) {
	SimpleName pv = getPatternVariable();
	if (pv != null) {
	result.setPatternVariable((SimpleName) pv.clone(target));
	}
	}
	return result;
	}

	@Override
	final boolean subtreeMatch0(ASTMatcher matcher, Object other) {
	// dispatch to correct overloaded match method
	return matcher.match(this, other);
	}

	@Override
	void accept0(ASTVisitor visitor) {
	boolean visitChildren = visitor.visit(this);
	if (visitChildren) {
	// visit children in normal left to right reading order
	acceptChild(visitor, getLeftOperand());
	acceptChild(visitor, getRightOperand());
	if (DOMASTUtil.isInstanceofExpressionPatternSupported(this.ast)) {
	acceptChild(visitor, getPatternVariable());
	}
	}
	visitor.endVisit(this);
	}

	/**
	* Returns the left operand of this instanceof expression.
	*
	* @return the left operand node
	*/
	public Expression getLeftOperand() {
	if (this.leftOperand == null) {
	// lazy init must be thread-safe for readers
	synchronized (this) {
	if (this.leftOperand == null) {
	preLazyInit();
	this.leftOperand= new SimpleName(this.ast);
	postLazyInit(this.leftOperand, LEFT_OPERAND_PROPERTY);
	}
	}
	}
	return this.leftOperand;
	}

	/**
	* Sets the left operand of this instanceof expression.
	*
	* @param expression the left operand node
	* @exception IllegalArgumentException if:
	* <ul>
	* <li>the node belongs to a different AST</li>
	* <li>the node already has a parent</li>
	* <li>a cycle in would be created</li>
	* </ul>
	*/
	public void setLeftOperand(Expression expression) {
	if (expression == null) {
	throw new IllegalArgumentException();
	}
	ASTNode oldChild = this.leftOperand;
	preReplaceChild(oldChild, expression, LEFT_OPERAND_PROPERTY);
	this.leftOperand = expression;
	postReplaceChild(oldChild, expression, LEFT_OPERAND_PROPERTY);
	}

	/**
	* Returns the right operand of this instanceof expression.
	*
	* @return the right operand node
	*/
	public Type getRightOperand() {
	if (this.rightOperand == null) {
	// lazy init must be thread-safe for readers
	synchronized (this) {
	if (this.rightOperand == null) {
	preLazyInit();
	this.rightOperand= new SimpleType(this.ast);
	postLazyInit(this.rightOperand, RIGHT_OPERAND_PROPERTY);
	}
	}
	}
	return this.rightOperand;
	}

	/**
	* Sets the right operand of this instanceof expression.
	*
	* @param referenceType the right operand node
	* @exception IllegalArgumentException if:
	* <ul>
	* <li>the node belongs to a different AST</li>
	* <li>the node already has a parent</li>
	* <li>a cycle in would be created</li>
	* </ul>
	*/
	public void setRightOperand(Type referenceType) {
	if (referenceType == null) {
	throw new IllegalArgumentException();
	}
	ASTNode oldChild = this.rightOperand;
	preReplaceChild(oldChild, referenceType, RIGHT_OPERAND_PROPERTY);
	this.rightOperand = referenceType;
	postReplaceChild(oldChild, referenceType, RIGHT_OPERAND_PROPERTY);
	}

	/**
	* Returns the patternVariable of this instanceof expression.
	*
	* @return the patternVariable node
	* @exception UnsupportedOperationException if this operation is used other than JLS15
	* @exception UnsupportedOperationException if this expression is used with previewEnabled flag as false
	* @noreference This method is not intended to be referenced by clients as it is a part of Java preview feature.
	* @nooverride This method is not intended to be re-implemented or extended by clients as it is a part of Java preview feature.
	*/
	public SimpleName getPatternVariable() {
	supportedOnlyIn15();
	unsupportedWithoutPreviewError();
	return this.patternVariable;
	}

	/**
	* Sets the patternVariable of this instanceof expression.
	*
	* @param referencePatternVariable the right operand node
	* @exception IllegalArgumentException if:
	* @exception UnsupportedOperationException if this operation is used other than JLS15
	* @exception UnsupportedOperationException if this expression is used with previewEnabled flag as false
	* @noreference This method is not intended to be referenced by clients as it is a part of Java preview feature.
	* @nooverride This method is not intended to be re-implemented or extended by clients as it is a part of Java preview feature.
	*/
	public void setPatternVariable(SimpleName referencePatternVariable) {
	supportedOnlyIn15();
	unsupportedWithoutPreviewError();
	if (referencePatternVariable == null) {
	throw new IllegalArgumentException();
	}
	ASTNode oldChild = this.patternVariable;
	preReplaceChild(oldChild, referencePatternVariable, PATTERN_VARIABLE_PROPERTY);
	this.patternVariable = referencePatternVariable;
	postReplaceChild(oldChild, referencePatternVariable, PATTERN_VARIABLE_PROPERTY);
	}
	@Override
	int memSize() {
	// treat Operator as free
	return BASE_NODE_SIZE + 3 * 4;
	}

	@Override
	int treeSize() {
	return
	memSize()
	+ (this.leftOperand == null ? 0 : getLeftOperand().treeSize())
	+ (this.rightOperand == null ? 0 : getRightOperand().treeSize())
	+ (this.patternVariable == null ? 0 : getPatternVariable().treeSize());
	}
	}