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1 package com.thaiopensource.relaxng.impl;
2
3 import org.xml.sax.SAXException  ;
4 import com.thaiopensource.relaxng.parse.ParsedPattern;
5
6 public abstract class Pattern implements ParsedPattern {
7 private final boolean nullable;
8 private final int hc;
9 private final int contentType;
10
11 static final int TEXT_HASH_CODE = 1;
12 static final int ERROR_HASH_CODE = 3;
13 static final int EMPTY_HASH_CODE = 5;
14 static final int NOT_ALLOWED_HASH_CODE = 7;
15 static final int CHOICE_HASH_CODE = 11;
16 static final int GROUP_HASH_CODE = 13;
17 static final int INTERLEAVE_HASH_CODE = 17;
18 static final int ONE_OR_MORE_HASH_CODE = 19;
19 static final int ELEMENT_HASH_CODE = 23;
20 static final int VALUE_HASH_CODE = 27;
21 static final int ATTRIBUTE_HASH_CODE = 29;
22 static final int DATA_HASH_CODE = 31;
23 static final int LIST_HASH_CODE = 37;
24 static final int AFTER_HASH_CODE = 41;
25
26 static int combineHashCode(int hc1, int hc2, int hc3) {
27 return hc1 * hc2 * hc3;
28 }
29
30 static int combineHashCode(int hc1, int hc2) {
31 return hc1 * hc2;
32 }
33
34 static final int EMPTY_CONTENT_TYPE = 0;
35 static final int ELEMENT_CONTENT_TYPE = 1;
36 static final int MIXED_CONTENT_TYPE = 2;
37 static final int DATA_CONTENT_TYPE = 3;
38
39 Pattern(boolean nullable, int contentType, int hc) {
40 this.nullable = nullable;
41 this.contentType = contentType;
42 this.hc = hc;
43 }
44
45 Pattern() {
46 this.nullable = false;
47 this.hc = hashCode();
48 this.contentType = EMPTY_CONTENT_TYPE;
49 }
50
51 void checkRecursion(int depth) throws SAXException { }
52
53 Pattern expand(SchemaPatternBuilder b) {
54 return this;
55 }
56
57 final boolean isNullable() {
58 return nullable;
59 }
60
61 boolean isNotAllowed() {
62 return false;
63 }
64
65 static final int START_CONTEXT = 0;
66 static final int ELEMENT_CONTEXT = 1;
67 static final int ELEMENT_REPEAT_CONTEXT = 2;
68 static final int ELEMENT_REPEAT_GROUP_CONTEXT = 3;
69 static final int ELEMENT_REPEAT_INTERLEAVE_CONTEXT = 4;
70 static final int ATTRIBUTE_CONTEXT = 5;
71 static final int LIST_CONTEXT = 6;
72 static final int DATA_EXCEPT_CONTEXT = 7;
73
74 void checkRestrictions(int context, DuplicateAttributeDetector dad, Alphabet alpha)
75 throws RestrictionViolationException {
76 }
77
78 abstract boolean samePattern(Pattern other);
80
81 final int patternHashCode() {
82 return hc;
83 }
84
85 final int getContentType() {
86 return contentType;
87 }
88
89 boolean containsChoice(Pattern p) {
90 return this == p;
91 }
92
93 abstract void accept(PatternVisitor visitor);
94 abstract Object apply(PatternFunction f);
95
96 Pattern applyForPattern(PatternFunction f) {
97 return (Pattern)apply(f);
98 }
99
100 static boolean contentTypeGroupable(int ct1, int ct2) {
101 if (ct1 == EMPTY_CONTENT_TYPE || ct2 == EMPTY_CONTENT_TYPE)
102 return true;
103 if (ct1 == DATA_CONTENT_TYPE || ct2 == DATA_CONTENT_TYPE)
104 return false;
105 return true;
106 }
107
108 }
109 |
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