/******************************************************************************* * Copyright (c) 2000, 2008 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 net.sourceforge.phpdt.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. */ public class Block extends Statement { /** * The "statements" structural property of this node type. * @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: 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. *
* * @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(this.getStartPosition(), this.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 beStatement
s;
* attempts to add any other type of node will trigger an
* exception.
*
* @return the live list of statements in this block
* (element type: 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();
}
}