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1
11 package org.eclipse.jdt.internal.debug.core.model;
12
13
14 import java.util.Collections  ;
15 import java.util.List ;
16
17 import org.eclipse.debug.core.DebugException;
18 import org.eclipse.jdt.core.Signature;
19 import org.eclipse.jdt.debug.core.IJavaFieldVariable;
20 import org.eclipse.jdt.debug.core.IJavaObject;
21 import org.eclipse.jdt.debug.core.IJavaThread;
22 import org.eclipse.jdt.debug.core.IJavaType;
23 import org.eclipse.jdt.debug.core.IJavaValue;
24
25 import com.ibm.icu.text.MessageFormat;
26
27
30 public class JDINullValue extends JDIObjectValue {
31
32
33
37 public JDINullValue(JDIDebugTarget target) {
38 super(target, null);
39 }
40
41
44 protected List getVariablesList() {
45 return Collections.EMPTY_LIST;
46 }
47
48
51 public String getReferenceTypeName() {
52 return "null"; }
54
55
58 public String getValueString() {
59 return "null"; }
61
62
65 public String getSignature() {
66 return null;
67 }
68
69
72 public int getArrayLength() {
73 return -1;
74 }
75
76
79 public IJavaType getJavaType() {
80 return null;
81 }
82
83
86 public boolean equals(Object obj) {
87 return obj instanceof JDINullValue;
88 }
89
90
93 public int hashCode() {
94 return getClass().hashCode();
95 }
96
97
100 public String toString() {
101 return "null"; }
103
104
107 public IJavaFieldVariable getField(String name, boolean superField) {
108 return null;
109 }
110
111
114 public IJavaFieldVariable getField(String name, String typeSignature) {
115 return null;
116 }
117
118
121 public IJavaThread[] getWaitingThreads() {
122 return null;
123 }
124
125
128 public IJavaThread getOwningThread() {
129 return null;
130 }
131
132
135 public IJavaObject[] getReferringObjects(long max) {
136 return new IJavaObject[0];
137 }
138
139
142 public IJavaValue sendMessage(String selector, String signature, IJavaValue[] args, IJavaThread thread, boolean superSend) throws DebugException{
143 return npe(selector, signature);
144 }
145
146
149 public IJavaValue sendMessage(String selector, String signature, IJavaValue[] args, IJavaThread thread, String typeSignature) throws DebugException{
150 return npe(selector, signature);
151 }
152
153
160 private IJavaValue npe(String selector, String signature) throws DebugException {
161 StringBuffer buffer = new StringBuffer ();
162 buffer.append(selector);
163 String [] parameterTypes = Signature.getParameterTypes(signature);
164 buffer.append('(');
165 for (int i = 0; i < parameterTypes.length; i++) {
166 buffer.append(Signature.getSignatureSimpleName(parameterTypes[i].replace('/', '.')));
167 if (i+1 < parameterTypes.length) {
168 buffer.append(", "); }
170 }
171 buffer.append(')');
172 requestFailed(MessageFormat.format(JDIDebugModelMessages.JDINullValue_0, new String []{buffer.toString()}), null);
173 return null;
174 }
175 }
176 |
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