/*******************************************************************************
* 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.che.ide.ext.java.jdt.core.dom;
import java.util.ArrayList;
import java.util.List;
/**
* Block statement AST node type.
* <p/>
* <pre>
* Block:
* <b>{</b> { Statement } <b>}</b>
* </pre>
*
* @noinstantiate This class is not intended to be instantiated by clients.
* @since 2.0
*/
public class Block extends Statement {
/**
* 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: {@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.
*
* @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: {@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.
* <p>
* N.B. This constructor is package-private.
* </p>
*
* @param ast
* the AST that is to own this node
*/
Block(AST ast) {
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 List internalGetChildListProperty(ChildListPropertyDescriptor property) {
if (property == STATEMENTS_PROPERTY) {
return statements();
}
// allow default implementation to flag the error
return super.internalGetChildListProperty(property);
}
/* (omit javadoc for this method) Method declared on ASTNode. */
final int getNodeType0() {
return BLOCK;
}
/* (omit javadoc for this method) Method declared on ASTNode. */
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;
}
/* (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) {
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 <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;
}
/* (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 memSize() + this.statements.listSize();
}
}