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1
11 package org.eclipse.jdt.internal.corext.refactoring.typeconstraints.typesets;
12
13 import java.util.Iterator  ;
14
15 import org.eclipse.jdt.internal.corext.refactoring.typeconstraints.types.TType;
16
17 public class EmptyTypeSet extends TypeSet {
18
19 EmptyTypeSet(TypeSetEnvironment typeSetEnvironment) {
20 super(typeSetEnvironment);
21 }
22
23
26 public boolean isUniverse() {
27 return false;
28 }
29
30
33 public TypeSet makeClone() {
34 return this;
35 }
36
37
40 protected TypeSet specialCasesIntersectedWith(TypeSet s2) {
41 return this;
42 }
43
44
47 public boolean isEmpty() {
48 return true;
49 }
50
51
54 public TypeSet upperBound() {
55 return this;
56 }
57
58
61 public TypeSet lowerBound() {
62 return this;
63 }
64
65
68 public boolean hasUniqueLowerBound() {
69 return false;
70 }
71
72
75 public boolean hasUniqueUpperBound() {
76 return false;
77 }
78
79
82 public TType uniqueLowerBound() {
83 return null;
84 }
85
86
89 public TType uniqueUpperBound() {
90 return null;
91 }
92
93
96 public boolean contains(TType t) {
97 return false;
98 }
99
100
103 public boolean containsAll(TypeSet s) {
104 return false;
105 }
106
107
110 public Iterator iterator() {
111 return new Iterator () {
112 public void remove() {
113 }
115 public boolean hasNext() {
116 return false;
117 }
118 public Object next() {
119 return null;
120 }
121 };
122 }
123
124
127 public boolean isSingleton() {
128 return false;
129 }
130
131
134 public TType anyMember() {
135 return null;
136 }
137
138 public String toString() {
139 return "{ }"; }
141
142
145 public EnumeratedTypeSet enumerate() {
146 return new EnumeratedTypeSet(getTypeSetEnvironment());
147 }
148 }
149 |
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