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19 package org.netbeans.modules.javacore.jmiimpl.javamodel;
20
21 import java.lang.ref.Reference  ;
22 import java.util.*;
23 import org.netbeans.lib.java.parser.ASTree;
24 import org.netbeans.lib.java.parser.Token;
25 import org.netbeans.mdr.storagemodel.StorableObject;
26 import org.netbeans.modules.javacore.JMManager;
27 import org.netbeans.modules.javacore.parser.ASTProvider;
28 import org.netbeans.modules.javacore.parser.ElementInfo;
29 import org.netbeans.modules.javacore.parser.MDRParser;
30 import org.openide.ErrorManager;
31
32
36 public abstract class TransientElement extends MetadataElement {
37 private Reference tree;
38 private int firstToken, lastToken;
39 private int astType;
40 private ResourceImpl resource;
41
42 private boolean isNew = false;
43
44
45 public TransientElement(StorableObject o) {
46 super(o);
47 }
48
49 protected final void init(ASTree tree) {
50 MDRParser parser = (MDRParser) tree.getASTContext();
51 if (parser == null) {
52 JMManager.getLog().notify(ErrorManager.INFORMATIONAL, new Exception ("getASTContext() returned null for: " + tree)); JMManager.getLog().log("Using Element.getResource() instead of parser.getResource() to retrieve the parent resource...");
55 this.resource = (ResourceImpl) getResource();
56 } else {
57 this.resource = (ResourceImpl) parser.getResource();
58 }
59 this.tree = ElementInfo.createASTReference(tree);
60 this.firstToken = tree.getFirstToken();
61 this.lastToken = tree.getLastToken();
62 this.astType = tree.getType();
63 if (childrenInited) {
65 initChildren();
66 }
67 resetChange();
68 }
69
70 public final ASTree getASTree() {
71 initCheck();
72 if (tree == null) return null;
73 ASTree result = (ASTree) tree.get();
74 if (result == null) {
75 ASTree parentTree = resource.getASTree();
76 MDRParser parser = (MDRParser) parentTree.getASTContext();
77 result = parser.findTree(parentTree, firstToken, lastToken, astType);
78 this.tree = ElementInfo.createASTReference(result);
79 }
80 return result;
81
82 }
83
84 public final MDRParser getParser() {
85 ASTree tree = getASTree(); if (tree == null) return null;
87 return (MDRParser) tree.getASTContext();
88 }
89
90 protected final Object getInternalForm() {
91 return getASTree();
92 }
93
94 protected final boolean isInitialized() {
95 return (tree != null) || isNew;
96 }
97
98 protected final void uninitialize() {
99 tree = null;
100 resource = null;
101 isNew = false;
102 }
103
104
105 protected void setNew() {
106 setChanged();
107 isNew = true;
108 childrenInited = true;
109 }
110
111 protected final boolean isNew() {
112 return isNew;
113 }
114
115 public void getCollectionDiff(List diff, ASTProvider parser, int changeMask, ASTree parentNode, int groupNodeType, Collection newElements, int endOffset, String separator) {
116 ASTree[] oldElements = getChildNodes(parentNode, groupNodeType);
117 getCollectionDiff(diff, parser, changeMask, oldElements, newElements, endOffset, separator);
118 }
119
120 protected String getIndentation() {
121 super.getIndentation();
122 Object comp = refImmediateComposite();
123 if (comp instanceof SemiPersistentElement) {
124 return ((SemiPersistentElement) refImmediateComposite()).getIndentation().concat(INDENTATION);
125 } else {
126 return ((TransientElement) refImmediateComposite()).getIndentation().concat(INDENTATION);
127 }
128 }
129
130 protected void printListOfItems (String origSrc, StringBuffer buf, ASTree[] children, Map oldItems, List items) {
131 ASTProvider parser = getParser();
132 if (oldItems == null) {
133 oldItems = new HashMap();
134 for (int x = 0; x < children.length; x++) {
135 Token tok = (x < children.length - 1) ?
136 parser.getToken(children[x].getLastToken() + 1) : null;
137 oldItems.put(children[x], tok);
138 }
139 }
140 Iterator iter = items.iterator();
141 TransientElement item = null;
142 int x;
143 for (x = 0; iter.hasNext(); x++) {
144 item = (TransientElement) iter.next();
145 ASTree itemTree = item.getASTree();
146 if (!((x < children.length) && (itemTree == children[x]) && !item.isChanged())) {
147 x--;
148 break;
149 }
150 }
151 if ((x > -1) && (item != null)) {
152 Token token = null;
153 if (x == (children.length - 1)) {
154 item = null;
155 token = parser.getToken(children[x].getLastToken());
156 } else {
157 token = parser.getToken(children[x].getLastToken() + 1);
158 }
159 int start = parser.getToken(children[0].getFirstToken()).getStartOffset();
160 buf.append(origSrc.substring(start, token.getEndOffset()));
161 }
162
163 while (item != null) {
164 ASTree itemTree = item.getASTree();
165 Token tok = (Token) oldItems.get (itemTree);
166 buf.append(item.getSourceText());
167 if (iter.hasNext()) {
168 if (tok != null) {
169 buf.append(origSrc.substring(tok.getStartOffset(), tok.getEndOffset()));
170 } else {
171 buf.append(", "); }
173 }
174 item = iter.hasNext() ? (StatementImpl) iter.next() : null;
175 } }
177
178 protected void invalidate() {
179 super._delete();
180 }
181
182
191 protected final void rollback() {
192 if (isValid()) {
194 _delete();
195 }
196 }
197 }
198 |
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