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Copyright (c) 2000, 2010 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.List;

Expression statement AST node type.

This kind of node is used to convert an expression (Expression) into a statement (Statement) by wrapping it.

 ExpressionStatement:
    StatementExpression ;
 

Since:
2.0
Noinstantiate:
This class is not intended to be instantiated by clients.
 
 public class ExpressionStatement extends Statement {

The "expression" structural property of this node type (child type: Expression).

Since:
3.0
 
 	public static final ChildPropertyDescriptor EXPRESSION_PROPERTY =
 		new ChildPropertyDescriptor(ExpressionStatement.class"expression"Expression.class); //$NON-NLS-1$
 
A list of property descriptors (element type: StructuralPropertyDescriptor), or null if uninitialized.
 
 	private static final List PROPERTY_DESCRIPTORS;
 
 	static {
 		List properyList = new ArrayList(2);
 		createPropertyList(ExpressionStatement.classproperyList);
 	}

Returns a list of structural property descriptors for this node type. Clients must not modify the result.

Parameters:
apiLevel the API level; one of the AST.JLS* constants
Returns:
a list of property descriptors (element type: StructuralPropertyDescriptor)
Since:
3.0
 
 	public static List propertyDescriptors(int apiLevel) {
 	}

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

Creates a new unparented expression statement node owned by the given AST. By default, the expression statement is unspecified, but legal, method invocation expression.

N.B. This constructor is package-private.

Parameters:
ast the AST that is to own this node
 
 		super(ast);
 	}
 
 	/* (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 propertyboolean getASTNode child) {
		if (property == ) {
			if (get) {
				return getExpression();
else {
				return null;
			}
		}
		// allow default implementation to flag the error
		return super.internalGetSetChildProperty(propertygetchild);
	}
	/* (omit javadoc for this method)
	 * Method declared on ASTNode.
	 */
	final int getNodeType0() {
	}
	/* (omit javadoc for this method)
	 * Method declared on ASTNode.
	 */
	ASTNode clone0(AST target) {
		ExpressionStatement result = new ExpressionStatement(target);
		result.copyLeadingComment(this);
		return result;
	}
	/* (omit javadoc for this method)
	 * Method declared on ASTNode.
	 */
	final boolean subtreeMatch0(ASTMatcher matcherObject other) {
		// dispatch to correct overloaded match method
		return matcher.match(thisother);
	}
	/* (omit javadoc for this method)
	 * Method declared on ASTNode.
	 */
	void accept0(ASTVisitor visitor) {
		boolean visitChildren = visitor.visit(this);
		if (visitChildren) {
		}
		visitor.endVisit(this);
	}

Returns the expression of this expression statement.

Returns:
the expression node
		if (this. == null) {
			// lazy init must be thread-safe for readers
			synchronized (this) {
				if (this. == null) {
					this. = new MethodInvocation(this.);
				}
			}
		}
		return this.;
	}

Sets the expression of this expression statement.

Parameters:
expression the new expression node
Throws:
java.lang.IllegalArgumentException if:
  • the node belongs to a different AST
  • the node already has a parent
  • a cycle in would be created
	public void setExpression(Expression expression) {
		if (expression == null) {
		}
		ASTNode oldChild = this.;
		preReplaceChild(oldChildexpression);
		this. = expression;
		postReplaceChild(oldChildexpression);
	}
	/* (omit javadoc for this method)
	 * Method declared on ASTNode.
	 */
	int memSize() {
		return super.memSize() + 1 * 4;
	}
	/* (omit javadoc for this method)
	 * Method declared on ASTNode.
	 */
	int treeSize() {
		return
			+ (this. == null ? 0 : getExpression().treeSize());
	}
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