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1 package com.thaiopensource.validate.nrl;
2
3 import com.thaiopensource.util.Equal;
4 import com.thaiopensource.validate.nrl.ContextMap;
5 import com.thaiopensource.validate.nrl.Mode;
6
7 import java.util.Vector;
8 import java.util.Enumeration;
9
10 class ModeUsage {
11 private final Mode mode;
12 private final Mode currentMode;
13 private ContextMap modeMap;
14 private int attributeProcessing = -1;
15
16 ModeUsage(Mode mode, Mode currentMode) {
17 this(mode, currentMode, null);
18 }
19
20 private ModeUsage(Mode mode, Mode currentMode, ContextMap modeMap) {
21 this.mode = mode;
22 this.currentMode = currentMode;
23 this.modeMap = modeMap;
24 }
25
26 ModeUsage changeCurrentMode(Mode currentMode) {
27 return new ModeUsage(mode, currentMode, modeMap);
28 }
29
30 public boolean equals(Object obj) {
31 if (!(obj instanceof ModeUsage))
32 return false;
33 ModeUsage other = (ModeUsage)obj;
34 return this.mode == other.mode && this.currentMode == other.currentMode && Equal.equal(this.modeMap, other.modeMap);
35 }
36
37 public int hashCode() {
38 int hc = mode.hashCode() ^ currentMode.hashCode();
39 if (modeMap != null)
40 hc ^= modeMap.hashCode();
41 return hc;
42 }
43
44 private Mode resolve(Mode mode) {
45 return mode == Mode.CURRENT ? currentMode : mode;
46 }
47
48 int getAttributeProcessing() {
49 if (attributeProcessing == -1) {
50 attributeProcessing = resolve(mode).getAttributeProcessing();
51 if (modeMap != null) {
52 for (Enumeration enum = modeMap.values();
53 enum.hasMoreElements()
54 && attributeProcessing != Mode.ATTRIBUTE_PROCESSING_FULL;)
55 attributeProcessing = Math.max(resolve((Mode)enum.nextElement()).getAttributeProcessing(),
56 attributeProcessing);
57 }
58 }
59 return attributeProcessing;
60 }
61
62 boolean isContextDependent() {
63 return modeMap != null;
64 }
65
66 Mode getMode(Vector context) {
67 if (modeMap != null) {
68 Mode m = (Mode)modeMap.get(context);
69 if (m != null)
70 return resolve(m);
71 }
72 return resolve(mode);
73 }
74
75 boolean addContext(boolean isRoot, Vector names, Mode mode) {
76 if (modeMap == null)
77 modeMap = new ContextMap();
78 return modeMap.put(isRoot, names, mode);
79 }
80 }
81 |
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