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1 package org.antlr.works.editor;
2
3 import org.antlr.works.components.grammar.CEditorGrammar;
4
5 import java.util.HashMap  ;
6 import java.util.List ;
7 import java.util.Map ;
8
38
39 public class EditorPersistence {
40
41 private static final String KEY_RULES = "rules";
42 private static final String KEY_ACTIONS = "actions";
43
44 private Map <String ,Map <Object ,EditorPersistentObject>> persistence = new HashMap <String , Map <Object ,EditorPersistentObject>>();
45 private boolean stored = false;
46 private CEditorGrammar editor;
47
48 public EditorPersistence(CEditorGrammar editor) {
49 this.editor = editor;
50 }
51
52 public void store() {
53 if(stored)
54 return;
55
56 stored = true;
57 store(editor.parserEngine.getRules(), KEY_RULES);
58 store(editor.parserEngine.getActions(), KEY_ACTIONS);
59 }
60
61 public void restore() {
62 if(stored) {
63 stored = false;
64 restore(editor.parserEngine.getRules(), KEY_RULES);
65 restore(editor.parserEngine.getActions(), KEY_ACTIONS);
66 }
67 }
68
69 public void store(List objects, String key) {
70 Map <Object ,EditorPersistentObject> m = persistence.get(key);
71 if(m == null) {
72 m = new HashMap <Object , EditorPersistentObject>();
73 persistence.put(key, m);
74 }
75
76 m.clear();
77 if(objects == null)
78 return;
79
80 for(int index=0; index<objects.size(); index++) {
81 EditorPersistentObject o = (EditorPersistentObject)objects.get(index);
82 m.put(o.getPersistentID(), o);
83 }
84 }
85
86 public void restore(List objects, String key) {
87 Map <Object ,EditorPersistentObject> m = persistence.get(key);
88 if(m == null)
89 return;
90
91 if(objects == null)
92 return;
93
94 for(int index=0; index<objects.size(); index++) {
95 EditorPersistentObject o = (EditorPersistentObject) objects.get(index);
96 EditorPersistentObject oldObject = m.get(o.getPersistentID());
97 if(oldObject != null)
98 o.persistentAssign(oldObject);
99 }
100 }
101 }
102 |
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