Copyright (c) 2000, 2013 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
/*******************************************************************************
 * Copyright (c) 2000, 2013 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;

Block statement AST node type.
Block:
   { { Statement } }

Since:
2.0
@noinstantiate
This class is not intended to be instantiated by clients./**
 * Block statement AST node type.
 *
 * <pre>
 * Block:
 *    <b>{</b> { Statement } <b>}</b>
 * </pre>
 *
 * @since 2.0
 * @noinstantiate This class is not intended to be instantiated by clients.
 */
@SuppressWarnings({"rawtypes", "unchecked"})
public class Block extends Statement {

	
The "statements" structural property of this node type (element type: Statement). 
Since:
3.0/**
	 * The "statements" structural property of this node type (element type: {@link Statement}).
	 * @since 3.0
	 */
	public static final ChildListPropertyDescriptor STATEMENTS_PROPERTY =
		new ChildListPropertyDescriptor(Block.class, "statements", Statement.class, CYCLE_RISK); //$NON-NLS-1$

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

	static {
		List properyList = new ArrayList(2);
		createPropertyList(Block.class, properyList);
		addProperty(STATEMENTS_PROPERTY, properyList);
		PROPERTY_DESCRIPTORS = reapPropertyList(properyList);
	}

	
Returns a list of structural property descriptors for this node type.
Clients must not modify the result.
Params:
apiLevel – the API level; one of the
AST.JLS* constants
Returns:
a list of property descriptors (element type: StructuralPropertyDescriptor)
Since:
3.0/**
	 * 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 PROPERTY_DESCRIPTORS;
	}

	
The list of statements (element type: Statement). Defaults to an empty list. /**
	 * The list of statements (element type: {@link Statement}).
	 * Defaults to an empty list.
	 */
	private ASTNode.NodeList statements =
		new ASTNode.NodeList(STATEMENTS_PROPERTY);

	
Creates a new unparented block node owned by the given AST.
By default, the block is empty.

N.B. This constructor is package-private.

Params:
ast – the AST that is to own this node/**
	 * Creates a new unparented block node owned by the given AST.
	 * By default, the block is empty.
	 * <p>
	 * N.B. This constructor is package-private.
	 * </p>
	 *
	 * @param ast the AST that is to own this node
	 */
	Block(AST ast) {
		super(ast);
	}

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

	@Override
	final List internalGetChildListProperty(ChildListPropertyDescriptor property) {
		if (property == STATEMENTS_PROPERTY) {
			return statements();
		}
		// allow default implementation to flag the error
		return super.internalGetChildListProperty(property);
	}

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

	@Override
	ASTNode clone0(AST target) {
		Block result = new Block(target);
		result.setSourceRange(getStartPosition(), getLength());
		result.copyLeadingComment(this);
		result.statements().addAll(
			ASTNode.copySubtrees(target, statements()));
		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) {
			acceptChildren(visitor, this.statements);
		}
		visitor.endVisit(this);
	}

	
Returns the live list of statements in this block. Adding and
removing nodes from this list affects this node dynamically.
All nodes in this list must be Statements;
attempts to add any other type of node will trigger an
exception.
Returns:
the live list of statements in this block (element type: Statement)/**
	 * Returns the live list of statements in this block. Adding and
	 * removing nodes from this list affects this node dynamically.
	 * All nodes in this list must be <code>Statement</code>s;
	 * attempts to add any other type of node will trigger an
	 * exception.
	 *
	 * @return the live list of statements in this block
	 *    (element type: {@link Statement})
	 */
	public List statements() {
		return this.statements;
	}

	@Override
	int memSize() {
		return super.memSize() + 1 * 4;
	}

	@Override
	int treeSize() {
		return memSize() + this.statements.listSize();
	}
}