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1
21
22 package org.armedbear.j.jdb;
23
24 import com.sun.jdi.InvalidTypeException;
25 import com.sun.jdi.Location;
26 import com.sun.jdi.Method;
27 import com.sun.jdi.ReferenceType;
28 import com.sun.jdi.request.EventRequest;
29 import com.sun.jdi.request.EventRequestManager;
30 import java.util.Iterator  ;
31 import java.util.List ;
32 import org.armedbear.j.Buffer;
33 import org.armedbear.j.Editor;
34 import org.armedbear.j.FastStringBuffer;
35 import org.armedbear.j.JavaSource;
36 import org.armedbear.j.Line;
37 import org.armedbear.j.LocalTag;
38 import org.armedbear.j.Log;
39 import org.armedbear.j.Utilities;
40
41 public final class MethodBreakpoint extends ResolvableBreakpoint
42 {
43 private final String methodName;
44
45 public MethodBreakpoint(Jdb jdb, String className, String methodName)
46 {
47 super(jdb);
48 this.className = className;
49 this.methodName = methodName;
50 }
51
52 public String getMethodName()
53 {
54 return methodName;
55 }
56
57 public EventRequest resolveEventRequest(ReferenceType refType) throws Exception
58 {
59 Method method = findMatchingMethod(refType);
60 if (method == null)
61 throw new InvalidTypeException();
62 Location location = method.location();
63 if (location == null)
64 throw new InvalidTypeException(); EventRequestManager erm =
66 refType.virtualMachine().eventRequestManager();
67 EventRequest er = erm.createBreakpointRequest(location);
68 er.setSuspendPolicy(EventRequest.SUSPEND_ALL);
69 er.enable();
70 setBreakpointInSource(refType, method);
71 return er;
72 }
73
74 private Method findMatchingMethod(ReferenceType refType)
76 {
77 Iterator iter = refType.methods().iterator();
78 while (iter.hasNext()) {
79 Method method = (Method) iter.next();
80 if (method.name().equals(methodName))
81 return method;
82 }
83 return null;
84 }
85
86 private void setBreakpointInSource(ReferenceType refType, Method method)
87 {
88 file = JavaSource.findSource(refType.name(), jdb.getSourcePath());
89 if (file == null) {
90 Log.debug("setBreakpointInSource findSource returned null");
91 return;
92 }
93 Buffer buf = Editor.getBuffer(file);
94 if (buf == null)
95 return;
96 if (!buf.initialized())
97 buf.initialize();
98 if (!buf.isLoaded())
99 buf.load();
100 List tags = buf.getTags(true);
101 if (tags == null)
102 return;
103 String lookFor = refType.name();
104 int index = lookFor.lastIndexOf('.');
106 if (index >= 0)
107 lookFor = lookFor.substring(index+1);
108 lookFor += '.';
109 lookFor += method.name();
110 Log.debug("lookFor = |" + lookFor + "|");
111 Line begin = null;
112 Line end = null;
113 for (int i = 0; i < tags.size(); i++) {
114 LocalTag tag = (LocalTag) tags.get(i);
115 if (tag.getName() != null) {
116 if (tag.getName().equals(lookFor)) {
117 begin = tag.getLine();
118 if (++i < tags.size()) {
119 tag = (LocalTag) tags.get(i);
120 end = tag.getLine();
121 }
122 break;
123 }
124 }
125 }
126 if (begin == null)
127 return;
128 for (Line ln = begin.next(); ln != end && ln != null; ln = ln.next()) {
130 String text = ln.getText().trim();
131 if (!text.startsWith("//")) {
132 if (text.indexOf('=') >= 0 || text.indexOf('(') >= 0) {
133 ln.setAnnotation(new BreakpointAnnotation(this));
135 line = ln;
136 break;
137 }
138 }
139 }
140 }
141
142 public void resolved()
143 {
144 if (file != null) {
145 Buffer buffer = Editor.getBufferList().findBuffer(file);
146 if (buffer != null)
147 buffer.repaint();
148 }
149 if (line != null)
150 line.setAnnotation(new BreakpointAnnotation(this));
151 jdb.log("Breakpoint resolved: " + getLocationString());
152 }
153
154 public String getLocationString()
155 {
156 FastStringBuffer sb = new FastStringBuffer();
157 if (className != null) {
158 sb.append(className);
159 sb.append('.');
160 }
161 sb.append(methodName);
162 if (!isResolved())
163 sb.append(' ');
164 return sb.toString();
165 }
166
167 public String toString()
168 {
169 FastStringBuffer sb = new FastStringBuffer();
170 if (className != null) {
171 sb.append(className);
172 sb.append('.');
173 }
174 sb.append(methodName);
175 if (!isResolved()) {
176 sb.append(' ');
177 sb.append("(deferred)");
178 }
179 return sb.toString();
180 }
181
182 public String toXml()
183 {
184 int indent = 4;
185 final String separator = System.getProperty("line.separator");
186 FastStringBuffer sb = new FastStringBuffer(Utilities.spaces(indent));
187 sb.append("<breakpoint");
188 sb.append(separator);
189 if (className != null) {
190 sb.append(Utilities.spaces(indent+2));
191 sb.append("className=\"");
192 sb.append(className);
193 sb.append('"');
194 sb.append(separator);
195 }
196 if (methodName != null) {
197 sb.append(Utilities.spaces(indent+2));
198 sb.append("methodName=\"");
199 sb.append(methodName);
200 sb.append('"');
201 sb.append(separator);
202 }
203 sb.append(Utilities.spaces(indent));
204 sb.append("/>");
205 sb.append(separator);
206 return sb.toString();
207 }
208 }
209 |
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