org.eclipse.jdt.core.dom.Block Maven / Gradle / Ivy
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/*******************************************************************************
* 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.
*/
@SuppressWarnings({"rawtypes", "unchecked"})
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
* AST.JLS*
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 final 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.
*
*
* @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 Statement
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();
}
}