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1
8
9 package net.sourceforge.chaperon.model.extended;
10
11 public class PatternSet
12 {
13 private PatternSetEntry first = null;
14
15 public PatternSet() {}
16
17 public PatternSet(PatternIterator pattern)
18 {
19 while (pattern.hasNext())
20 addPattern(pattern.next());
21 }
22
23 public boolean addPattern(Pattern pattern)
24 {
25 if (pattern==null)
26 throw new NullPointerException  ();
27
28 for (PatternSetEntry entry = first; entry!=null; entry = entry.next)
29 if (entry.pattern==pattern)
30 return false;
31
32 first = new PatternSetEntry(pattern, first);
33 return true;
34 }
35
36 public boolean addPattern(PatternSet set)
37 {
38 boolean modified = false;
39 for (PatternSetEntry entry = set.first; entry!=null; entry = entry.next)
40 modified |= addPattern(entry.pattern);
41
42 return modified;
43 }
44
45 public PatternIterator getPattern()
46 {
47 return new PatternSetEntryIterator(first);
48 }
49
50 public boolean contains(Pattern pattern)
51 {
52 for (PatternSetEntry entry = first; entry!=null; entry = entry.next)
53 if (entry.pattern==pattern)
54 return true;
55
56 return false;
57 }
58
59 public int getPatternCount()
60 {
61 int count = 0;
62 for (PatternSetEntry entry = first; entry!=null; entry = entry.next)
63 count++;
64
65 return count;
66 }
67
68 public void clear()
69 {
70 first = null;
71 }
72
73 public boolean equals(Object o)
74 {
75 if (o instanceof PatternSet)
76 {
77 PatternSet set = (PatternSet)o;
78
79 if (set.getPatternCount()!=getPatternCount())
80 return false;
81
82 for (PatternSetEntry entry = first; entry!=null; entry = entry.next)
83 for (PatternSetEntry foreignentry = set.first; foreignentry!=null;
84 foreignentry = foreignentry.next)
85 {
86 if (entry.pattern==foreignentry.pattern)
87 break;
88
89 if (foreignentry.next==null)
90 return false;
91 }
92
93 return true;
94 }
95
96 return false;
97 }
98
99 public String toString()
100 {
101 StringBuffer buffer = new StringBuffer ();
102
103 buffer.append("{");
104 for (PatternSetEntry entry = first; entry!=null; entry = entry.next)
105 {
106 if (entry!=first)
107 buffer.append(",");
108
109 buffer.append(entry.pattern.toString());
110 }
111
112 buffer.append("}");
113 return buffer.toString();
114 }
115
116 private class PatternSetEntry
117 {
118 public final Pattern pattern;
119 public final PatternSetEntry next;
120
121 private PatternSetEntry(Pattern pattern, PatternSetEntry next)
122 {
123 this.pattern = pattern;
124 this.next = next;
125 }
126 }
127
128 public class PatternSetEntryIterator implements PatternIterator
129 {
130 private PatternSetEntry entry = null;
131
132 private PatternSetEntryIterator(PatternSetEntry entry)
133 {
134 this.entry = entry;
135 }
136
137 public boolean hasNext()
138 {
139 return entry!=null;
140 }
141
142 public Pattern next()
143 {
144 Pattern pattern = entry.pattern;
145 this.entry = entry.next;
146 return pattern;
147 }
148 }
149 }
150 |
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