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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;

For statement AST node type.
 ForStatement:
    for (
    [ ForInit ];
    [ Expression ] ;
    [ ForUpdate ] )
    Statement
 ForInit:
   Expression { , Expression }
 ForUpdate:
   Expression { , Expression }
 

Note: When variables are declared in the initializer of a for statement such as "for (int a=1, b=2;;);", they should be represented as a single VariableDeclarationExpression with two fragments, rather than being split up into a pair of expressions.

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

The "initializers" structural property of this node type (element type: Expression).

Since:
3.0
 
 		new ChildListPropertyDescriptor(ForStatement.class"initializers"Expression.class); //$NON-NLS-1$
 
The "expression" structural property of this node type (child type: Expression).

Since:
3.0
 
 	public static final ChildPropertyDescriptor EXPRESSION_PROPERTY =
 		new ChildPropertyDescriptor(ForStatement.class"expression"Expression.class); //$NON-NLS-1$
 
The "updaters" structural property of this node type (element type: Expression).

Since:
3.0
 
 	public static final ChildListPropertyDescriptor UPDATERS_PROPERTY =
 		new ChildListPropertyDescriptor(ForStatement.class"updaters"Expression.class); //$NON-NLS-1$
 
The "body" structural property of this node type (child type: Statement).

Since:
3.0
 
 	public static final ChildPropertyDescriptor BODY_PROPERTY =
 		new ChildPropertyDescriptor(ForStatement.class"body"Statement.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(5);
 		createPropertyList(ForStatement.classproperyList);
 		addProperty(properyList);
 		addProperty(properyList);
 	}

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 list of initializer expressions (element type: Expression). Defaults to an empty list.
The condition expression; null for none; defaults to none.
The list of update expressions (element type: Expression). Defaults to an empty list.
The body statement; lazily initialized; defaults to an empty block statement.
	private Statement body = null;

Creates a new AST node for a for statement owned by the given AST. By default, there are no initializers, no condition expression, no updaters, and the body is an empty block.

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;
			}
		}
		if (property == ) {
			if (get) {
				return getBody();
else {
				setBody((Statementchild);
				return null;
			}
		}
		// allow default implementation to flag the error
		return super.internalGetSetChildProperty(propertygetchild);
	}
	/* (omit javadoc for this method)
	 * Method declared on ASTNode.
	 */
		if (property == ) {
			return initializers();
		}
		if (property == ) {
			return updaters();
		}
		// allow default implementation to flag the error
		return super.internalGetChildListProperty(property);
	}
	/* (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) {
		ForStatement result = new ForStatement(target);
		result.copyLeadingComment(this);
		result.initializers().addAll(ASTNode.copySubtrees(targetinitializers()));
			(Expression) ASTNode.copySubtree(targetgetExpression()));
		result.updaters().addAll(ASTNode.copySubtrees(targetupdaters()));
		result.setBody(
			(Statement) ASTNode.copySubtree(targetgetBody()));
		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) {
			// visit children in normal left to right reading order
			acceptChildren(visitorthis.);
			acceptChild(visitorgetBody());
		}
		visitor.endVisit(this);
	}

Returns the live ordered list of initializer expressions in this for statement.

The list should consist of either a list of so called statement expressions (JLS2, 14.8), or a single VariableDeclarationExpression. Otherwise, the for statement would have no Java source equivalent.

Returns:
the live list of initializer expressions (element type: Expression)
	public List initializers() {
		return this.;
	}

Returns the condition expression of this for statement, or null if there is none.

Returns:
the condition expression node, or null if there is none
	}

Sets or clears the condition expression of this return statement.

Parameters:
expression the condition expression node, or null if there is none
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) {
		preReplaceChild(oldChildexpression);
		this. = expression;
		postReplaceChild(oldChildexpression);
	}

Returns the live ordered list of update expressions in this for statement.

The list should consist of so called statement expressions. Otherwise, the for statement would have no Java source equivalent.

Returns:
the live list of update expressions (element type: Expression)
	public List updaters() {
		return this.;
	}

Returns the body of this for statement.

Returns:
the body statement node
	public Statement getBody() {
		if (this. == null) {
			// lazy init must be thread-safe for readers
			synchronized (this) {
				if (this. == null) {
					this. = new Block(this.);
				}
			}
		}
		return this.;
	}

Sets the body of this for statement.

Special note: The Java language does not allow a local variable declaration to appear as the body of a for statement (they may only appear within a block). However, the AST will allow a VariableDeclarationStatement as the body of a ForStatement. To get something that will compile, be sure to embed the VariableDeclarationStatement inside a Block.

Parameters:
statement the body statement 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 setBody(Statement statement) {
		if (statement == null) {
		}
		ASTNode oldChild = this.;
		preReplaceChild(oldChildstatement);
		this. = statement;
		postReplaceChild(oldChildstatement);
	}
	/* (omit javadoc for this method)
	 * Method declared on ASTNode.
	 */
	int memSize() {
		return super.memSize() + 4 * 4;
	}
	/* (omit javadoc for this method)
	 * Method declared on ASTNode.
	 */
	int treeSize() {
		return
			+ (this. == null ? 0 : getExpression().treeSize())
			+ (this. == null ? 0 : getBody().treeSize());
	}
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