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1
11 package org.eclipse.jdt.internal.debug.core.model;
12
13 import java.util.ArrayList  ;
14
15 import org.eclipse.debug.core.DebugException;
16 import org.eclipse.debug.core.model.IValue;
17 import org.eclipse.jdt.debug.core.IJavaValue;
18
19 import com.sun.jdi.Value;
20 import com.sun.jdi.VirtualMachine;
21
22
25 public abstract class JDIModificationVariable extends JDIVariable {
26
27 private final static ArrayList fgValidSignatures = new ArrayList (9);
28 static {
29 fgValidSignatures.add("B"); fgValidSignatures.add("C"); fgValidSignatures.add("D"); fgValidSignatures.add("F"); fgValidSignatures.add("I"); fgValidSignatures.add("J"); fgValidSignatures.add("S"); fgValidSignatures.add("Z"); fgValidSignatures.add(jdiStringSignature); }
39
40 public JDIModificationVariable(JDIDebugTarget target) {
41 super(target);
42 }
43
44
47 public boolean supportsValueModification() {
48 return true;
49 }
50
51 protected Value generateVMValue(String expression) throws DebugException {
52
53 String signature= null;
54 Value cValue= getCurrentValue();
55 VirtualMachine vm= getVM();
56 if (vm == null) {
57 requestFailed(JDIDebugModelMessages.JDIModificationVariable_Unable_to_generate_value___VM_disconnected__1, null);
58 }
59 if (cValue == null) {
60 signature = jdiStringSignature;
62 } else {
63 signature= cValue.type().signature();
64 }
65 if (signature.length() > 1 && !signature.equals(jdiStringSignature)) {
66 return null;
67 }
68 Value vmValue= null;
69 try {
70 switch (signature.charAt(0)) {
71 case 'Z' :
72 String flse= Boolean.FALSE.toString();
73 String tre= Boolean.TRUE.toString();
74 if (expression.equals(tre) || expression.equals(flse)) {
75 boolean booleanValue= Boolean.valueOf(expression).booleanValue();
76 vmValue= vm.mirrorOf(booleanValue);
77 }
78 break;
79 case 'B' :
80 byte byteValue= Byte.valueOf(expression).byteValue();
81 vmValue= vm.mirrorOf(byteValue);
82 break;
83 case 'C' :
84 if (expression.length() == 1) {
85 char charValue= expression.charAt(0);
86 vmValue= vm.mirrorOf(charValue);
87 } else if (expression.length() == 2) {
88 char charValue;
89 if (!(expression.charAt(0) == '\\')) {
90 return null;
91 }
92 switch (expression.charAt(1)) {
93 case 'b':
94 charValue= '\b';
95 break;
96 case 'f':
97 charValue= '\f';
98 break;
99 case 'n':
100 charValue= '\n';
101 break;
102 case 'r':
103 charValue= '\r';
104 break;
105 case 't':
106 charValue= '\t';
107 break;
108 case '\'':
109 charValue= '\'';
110 break;
111 case '\"':
112 charValue= '\"';
113 break;
114 case '\\':
115 charValue= '\\';
116 break;
117 default :
118 return null;
119 }
120 vmValue= vm.mirrorOf(charValue);
121 }
122 break;
123 case 'S' :
124 short shortValue= Short.valueOf(expression).shortValue();
125 vmValue= vm.mirrorOf(shortValue);
126 break;
127 case 'I' :
128 int intValue= Integer.valueOf(expression).intValue();
129 vmValue= vm.mirrorOf(intValue);
130 break;
131 case 'J' :
132 long longValue= Long.valueOf(expression).longValue();
133 vmValue= vm.mirrorOf(longValue);
134 break;
135 case 'F' :
136 float floatValue= Float.valueOf(expression).floatValue();
137 vmValue= vm.mirrorOf(floatValue);
138 break;
139 case 'D' :
140 double doubleValue= Double.valueOf(expression).doubleValue();
141 vmValue= vm.mirrorOf(doubleValue);
142 break;
143 case 'L' :
144 if (expression.equals("null")) { vmValue = null;
146 } else if (expression.equals("\"null\"")) { vmValue = vm.mirrorOf("null"); } else {
149 vmValue= vm.mirrorOf(expression);
150 }
151 break;
152
153 }
154 } catch (NumberFormatException nfe) {
155 return null;
156 }
157 return vmValue;
158 }
159
160
163 public boolean verifyValue(String expression) throws DebugException {
164 IValue value = JDIValue.createValue(getJavaDebugTarget(), generateVMValue(expression));
165 return verifyValue(value);
166 }
167
168
171 public boolean verifyValue(IValue value) {
172 return value instanceof IJavaValue &&
173 value.getDebugTarget().equals(getDebugTarget());
174 }
175
176
179 public final void setValue(String expression) throws DebugException {
180 Value value= generateVMValue(expression);
181 setJDIValue(value);
182 }
183
184
187 protected abstract void setJDIValue(Value value) throws DebugException;
188
189 }
190 |
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