org.eclipse.jdt.core/dom/org/eclipse/jdt/core/dom/MemberValuePair.java - objectteams/org.eclipse.objectteams - Gitiles

 /*******************************************************************************
  * Copyright (c) 2004, 2008 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;

 /**
  * Member value pair node (added in JLS3 API). Member value pairs appear in annotations.
  * <p>
  * <pre>
  * MemberValuePair:
  *   SimpleName <b>=</b> Expression
  * </pre>
  * Within annotations, only certain kinds of expressions are meaningful,
  * including other annotations.
  * </p>
  *
  * @see NormalAnnotation
  * @since 3.1
  * @noinstantiate This class is not intended to be instantiated by clients.
  */
 public class MemberValuePair extends ASTNode {

 	/**
 	 * The "name" structural property of this node type.
 	 */
 	public static final ChildPropertyDescriptor NAME_PROPERTY =
 		new ChildPropertyDescriptor(MemberValuePair.class, "name", SimpleName.class, MANDATORY, NO_CYCLE_RISK); //$NON-NLS-1$

 	/**
 	 * The "value" structural property of this node type.
 	 */
 	public static final ChildPropertyDescriptor VALUE_PROPERTY =
 		new ChildPropertyDescriptor(MemberValuePair.class, "value", Expression.class, MANDATORY, CYCLE_RISK); //$NON-NLS-1$

 	/**
 	 * 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(MemberValuePair.class, propertyList);
 		addProperty(NAME_PROPERTY, propertyList);
 		addProperty(VALUE_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 AST.JLS* constants
 	 * @return a list of property descriptors (element type:
 	 * {@link StructuralPropertyDescriptor})
 	 */
 	public static List propertyDescriptors(int apiLevel) {
 		return PROPERTY_DESCRIPTORS;
 	}

 	/**
 	 * The member name; lazily initialized; defaults to a unspecified,
 	 * legal name.
 	 */
 	private SimpleName name = null;

 	/**
 	 * The value; lazily initialized; defaults to a unspecified,
 	 * legal expression.
 	 */
 	private Expression value = null;

 	/**
 	 * Creates a new AST node for a member value pair owned by the given
 	 * AST. By default, the node has an unspecified (but legal) member
 	 * name and value.
 	 * <p>
 	 * N.B. This constructor is package-private.
 	 * </p>
 	 *
 	 * @param ast the AST that is to own this node
 	 */
 	MemberValuePair(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 ASTNode internalGetSetChildProperty(ChildPropertyDescriptor property, boolean get, ASTNode child) {
 		if (property == NAME_PROPERTY) {
 			if (get) {
 				return getName();
 			} else {
 				setName((SimpleName) child);
 				return null;
 			}
 		}
 		if (property == VALUE_PROPERTY) {
 			if (get) {
 				return getValue();
 			} else {
 				setValue((Expression) 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 MEMBER_VALUE_PAIR;
 	}

 	/* (omit javadoc for this method)
 	 * Method declared on ASTNode.
 	 */
 	ASTNode clone0(AST target) {
 		MemberValuePair result = new MemberValuePair(target);
 		result.setSourceRange(getStartPosition(), getLength());
 		result.setName((SimpleName) ASTNode.copySubtree(target, getName()));
 		result.setValue((Expression) ASTNode.copySubtree(target, getValue()));
 		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, getName());
 			acceptChild(visitor, getValue());
 		}
 		visitor.endVisit(this);
 	}

 	/**
 	 * Returns the member name.
 	 *
 	 * @return the member name node
 	 */
 	public SimpleName getName() {
 		if (this.name == null) {
 			// lazy init must be thread-safe for readers
 			synchronized (this) {
 				if (this.name == null) {
 					preLazyInit();
 					this.name = new SimpleName(this.ast);
 					postLazyInit(this.name, NAME_PROPERTY);
 				}
 			}
 		}
 		return this.name;
 	}

 	/**
 	 * Resolves and returns the member value pair binding for this member value pair.
 	 * <p>
 	 * Note that bindings are generally unavailable unless requested when the
 	 * AST is being built.
 	 * </p>
 	 *
 	 * @return the binding, or <code>null</code> if the binding cannot be
 	 *    resolved
 	 * @since 3.2
 	 */
 	public final IMemberValuePairBinding resolveMemberValuePairBinding() {
 		return this.ast.getBindingResolver().resolveMemberValuePair(this);
 	}

 	/**
 	 * Sets the member name.
 	 *
 	 * @param name the member name node
 	 * @exception IllegalArgumentException if:
 	 * <ul>
 	 * <li>the node belongs to a different AST</li>
 	 * <li>the node already has a parent</li>
 	 * </ul>
 	 */
 	public void setName(SimpleName name) {
 		if (name == null) {
 			throw new IllegalArgumentException();
 		}
 		ASTNode oldChild = this.name;
 		preReplaceChild(oldChild, name, NAME_PROPERTY);
 		this.name = name;
 		postReplaceChild(oldChild, name, NAME_PROPERTY);
 	}

 	/**
 	 * Returns the value expression.
 	 *
 	 * @return the value expression
 	 */
 	public Expression getValue() {
 		if (this.value == null) {
 			// lazy init must be thread-safe for readers
 			synchronized (this) {
 				if (this.value == null) {
 					preLazyInit();
 					this.value= new SimpleName(this.ast);
 					postLazyInit(this.value, VALUE_PROPERTY);
 				}
 			}
 		}
 		return this.value;
 	}

 	/**
 	 * Sets the value of this pair.
 	 *
 	 * @param value the new value
 	 * @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 setValue(Expression value) {
 		if (value == null) {
 			throw new IllegalArgumentException();
 		}
 		ASTNode oldChild = this.value;
 		preReplaceChild(oldChild, value, VALUE_PROPERTY);
 		this.value = value;
 		postReplaceChild(oldChild, value, VALUE_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.name == null ? 0 : getName().treeSize())
 			+ (this.value == null ? 0 : getValue().treeSize());
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2004, 2008 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;

	/**
	* Member value pair node (added in JLS3 API). Member value pairs appear in annotations.
	* <p>
	* <pre>
	* MemberValuePair:
	* SimpleName <b>=</b> Expression
	* </pre>
	* Within annotations, only certain kinds of expressions are meaningful,
	* including other annotations.
	* </p>
	*
	* @see NormalAnnotation
	* @since 3.1
	* @noinstantiate This class is not intended to be instantiated by clients.
	*/
	public class MemberValuePair extends ASTNode {

	/**
	* The "name" structural property of this node type.
	*/
	public static final ChildPropertyDescriptor NAME_PROPERTY =
	new ChildPropertyDescriptor(MemberValuePair.class, "name", SimpleName.class, MANDATORY, NO_CYCLE_RISK); //$NON-NLS-1$

	/**
	* The "value" structural property of this node type.
	*/
	public static final ChildPropertyDescriptor VALUE_PROPERTY =
	new ChildPropertyDescriptor(MemberValuePair.class, "value", Expression.class, MANDATORY, CYCLE_RISK); //$NON-NLS-1$

	/**
	* 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(MemberValuePair.class, propertyList);
	addProperty(NAME_PROPERTY, propertyList);
	addProperty(VALUE_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 AST.JLS* constants
	* @return a list of property descriptors (element type:
	* {@link StructuralPropertyDescriptor})
	*/
	public static List propertyDescriptors(int apiLevel) {
	return PROPERTY_DESCRIPTORS;
	}

	/**
	* The member name; lazily initialized; defaults to a unspecified,
	* legal name.
	*/
	private SimpleName name = null;

	/**
	* The value; lazily initialized; defaults to a unspecified,
	* legal expression.
	*/
	private Expression value = null;

	/**
	* Creates a new AST node for a member value pair owned by the given
	* AST. By default, the node has an unspecified (but legal) member
	* name and value.
	* <p>
	* N.B. This constructor is package-private.
	* </p>
	*
	* @param ast the AST that is to own this node
	*/
	MemberValuePair(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 ASTNode internalGetSetChildProperty(ChildPropertyDescriptor property, boolean get, ASTNode child) {
	if (property == NAME_PROPERTY) {
	if (get) {
	return getName();
	} else {
	setName((SimpleName) child);
	return null;
	}
	}
	if (property == VALUE_PROPERTY) {
	if (get) {
	return getValue();
	} else {
	setValue((Expression) 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 MEMBER_VALUE_PAIR;
	}

	/* (omit javadoc for this method)
	* Method declared on ASTNode.
	*/
	ASTNode clone0(AST target) {
	MemberValuePair result = new MemberValuePair(target);
	result.setSourceRange(getStartPosition(), getLength());
	result.setName((SimpleName) ASTNode.copySubtree(target, getName()));
	result.setValue((Expression) ASTNode.copySubtree(target, getValue()));
	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, getName());
	acceptChild(visitor, getValue());
	}
	visitor.endVisit(this);
	}

	/**
	* Returns the member name.
	*
	* @return the member name node
	*/
	public SimpleName getName() {
	if (this.name == null) {
	// lazy init must be thread-safe for readers
	synchronized (this) {
	if (this.name == null) {
	preLazyInit();
	this.name = new SimpleName(this.ast);
	postLazyInit(this.name, NAME_PROPERTY);
	}
	}
	}
	return this.name;
	}

	/**
	* Resolves and returns the member value pair binding for this member value pair.
	* <p>
	* Note that bindings are generally unavailable unless requested when the
	* AST is being built.
	* </p>
	*
	* @return the binding, or <code>null</code> if the binding cannot be
	* resolved
	* @since 3.2
	*/
	public final IMemberValuePairBinding resolveMemberValuePairBinding() {
	return this.ast.getBindingResolver().resolveMemberValuePair(this);
	}

	/**
	* Sets the member name.
	*
	* @param name the member name node
	* @exception IllegalArgumentException if:
	* <ul>
	* <li>the node belongs to a different AST</li>
	* <li>the node already has a parent</li>
	* </ul>
	*/
	public void setName(SimpleName name) {
	if (name == null) {
	throw new IllegalArgumentException();
	}
	ASTNode oldChild = this.name;
	preReplaceChild(oldChild, name, NAME_PROPERTY);
	this.name = name;
	postReplaceChild(oldChild, name, NAME_PROPERTY);
	}

	/**
	* Returns the value expression.
	*
	* @return the value expression
	*/
	public Expression getValue() {
	if (this.value == null) {
	// lazy init must be thread-safe for readers
	synchronized (this) {
	if (this.value == null) {
	preLazyInit();
	this.value= new SimpleName(this.ast);
	postLazyInit(this.value, VALUE_PROPERTY);
	}
	}
	}
	return this.value;
	}

	/**
	* Sets the value of this pair.
	*
	* @param value the new value
	* @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 setValue(Expression value) {
	if (value == null) {
	throw new IllegalArgumentException();
	}
	ASTNode oldChild = this.value;
	preReplaceChild(oldChild, value, VALUE_PROPERTY);
	this.value = value;
	postReplaceChild(oldChild, value, VALUE_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.name == null ? 0 : getName().treeSize())
	+ (this.value == null ? 0 : getValue().treeSize());
	}
	}