EmptyStatement


1   /*******************************************************************************
2    * Copyright (c) 2000, 2004 IBM Corporation and others.
3    * All rights reserved. This program and the accompanying materials
4    * are made available under the terms of the Eclipse Public License v1.0
5    * which accompanies this distribution, and is available at
6    * http://www.eclipse.org/legal/epl-v10.html
7    *
8    * Contributors:
9    *     IBM Corporation - initial API and implementation
10   *******************************************************************************/
11  
12  package org.eclipse.jdt.core.dom;
13  
14  import java.util.ArrayList  ;
15  import java.util.List  ;
16  
17  /**
18   * Null statement AST node type.
19   *
20   * <pre>
21   * EmptyStatement:
22   *    <b>;</b>
23   * </pre>
24   * 
25   * @since 2.0
26   */
27  public class EmptyStatement extends Statement {
28  
29      /**
30       * A list of property descriptors (element type: 
31       * {@link StructuralPropertyDescriptor}),
32       * or null if uninitialized.
33       */
34      private static final List   PROPERTY_DESCRIPTORS;
35      
36      static {
37          List   properyList = new ArrayList  (1);
38          createPropertyList(EmptyStatement.class, properyList);
39          PROPERTY_DESCRIPTORS = reapPropertyList(properyList);
40      }
41  
42      /**
43       * Returns a list of structural property descriptors for this node type.
44       * Clients must not modify the result.
45       * 
46       * @param apiLevel the API level; one of the
47       * <code>AST.JLS&ast;</code> constants
48  
49       * @return a list of property descriptors (element type: 
50       * {@link StructuralPropertyDescriptor})
51       * @since 3.0
52       */
53      public static List   propertyDescriptors(int apiLevel) {
54          return PROPERTY_DESCRIPTORS;
55      }
56              
57      /**
58       * Creates a new unparented null statement node owned by the given AST.
59       * <p>
60       * N.B. This constructor is package-private.
61       * </p>
62       * 
63       * @param ast the AST that is to own this node
64       */
65      EmptyStatement(AST ast) {
66          super(ast);
67      }
68      
69      /* (omit javadoc for this method)
70       * Method declared on ASTNode.
71       */
72      final List   internalStructuralPropertiesForType(int apiLevel) {
73          return propertyDescriptors(apiLevel);
74      }
75      
76      /* (omit javadoc for this method)
77       * Method declared on ASTNode.
78       */
79      final int getNodeType0() {
80          return EMPTY_STATEMENT;
81      }
82  
83      /* (omit javadoc for this method)
84       * Method declared on ASTNode.
85       */
86      ASTNode clone0(AST target) {
87          EmptyStatement result = new EmptyStatement(target);
88          result.setSourceRange(this.getStartPosition(), this.getLength());
89          result.copyLeadingComment(this);
90          return result;
91      }
92  
93      /* (omit javadoc for this method)
94       * Method declared on ASTNode.
95       */
96      final boolean subtreeMatch0(ASTMatcher matcher, Object   other) {
97          // dispatch to correct overloaded match method
98          return matcher.match(this, other);
99      }
100 
101     /* (omit javadoc for this method)
102      * Method declared on ASTNode.
103      */
104     void accept0(ASTVisitor visitor) {
105         visitor.visit(this);
106         visitor.endVisit(this);
107     }
108     
109     /* (omit javadoc for this method)
110      * Method declared on ASTNode.
111      */
112     int treeSize() {
113         return memSize();
114     }
115 }
116 
117
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