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38 package com.gargoylesoftware.htmlunit;
39
40 import java.io.BufferedReader  ;
41 import java.io.IOException ;
42 import java.io.PrintStream ;
43 import java.io.PrintWriter ;
44 import java.io.StringReader ;
45 import java.io.StringWriter ;
46 import org.mozilla.javascript.EcmaError;
47 import org.mozilla.javascript.JavaScriptException;
48 import org.mozilla.javascript.WrappedException;
49
50
57 public class ScriptException extends RuntimeException {
58 private static final long serialVersionUID = 4788896649084231283L;
59 private final Throwable throwable_;
60 private final String scriptSourceCode_;
61
62
63
71 public ScriptException( final Throwable throwable, final String scriptSourceCode ) {
72 super(getMessageFrom(throwable));
73 throwable_ = throwable;
74 scriptSourceCode_ = scriptSourceCode;
75 }
76
77 private static String getMessageFrom( final Throwable throwable ) {
78 if( throwable == null ) {
79 return "null";
80 }
81 else {
82 return throwable.getMessage();
83 }
84 }
85
86
91 public ScriptException( final Throwable throwable ) {
92 this( throwable, null );
93 }
94
95
96
100 public Throwable getEnclosedException() {
101 return throwable_;
102 }
103
104
108 public void printStackTrace() {
109 printStackTrace(System.out);
110 }
111
112
118 public void printStackTrace( final PrintWriter writer ) {
119 writer.write( createPrintableStackTrace() );
120 }
121
122
123
129 public void printStackTrace( final PrintStream stream ) {
130 stream.print(createPrintableStackTrace());
131 }
132
133
134 private String createPrintableStackTrace() {
135 final StringWriter stringWriter = new StringWriter ();
136 final PrintWriter printWriter = new PrintWriter (stringWriter);
137
138 printWriter.println("======= EXCEPTION START ========");
139
140 if( throwable_ != null ) {
141 if( throwable_ instanceof EcmaError ) {
142 final EcmaError ecmaError = (EcmaError)throwable_;
143 printWriter.print("EcmaError: ");
144 printWriter.print("lineNumber=[");
145 printWriter.print(ecmaError.lineNumber());
146 printWriter.print("] column=[");
147 printWriter.print(ecmaError.columnNumber());
148 printWriter.print("] lineSource=[");
149 printWriter.print(getFailingLine());
150 printWriter.print("] name=[");
151 printWriter.print(ecmaError.getName());
152 printWriter.print("] sourceName=[");
153 printWriter.print(ecmaError.sourceName());
154 printWriter.print("] message=[");
155 printWriter.print(ecmaError.getMessage());
156 printWriter.print("]");
157 printWriter.println();
158 }
159 else {
160 printWriter.println("Exception class=["+throwable_.getClass().getName()+"]");
161 }
162 }
163
164 super.printStackTrace(printWriter);
165 if( throwable_ != null && throwable_ instanceof JavaScriptException ) {
166 final Object value = ((JavaScriptException)throwable_).getValue();
167
168 printWriter.print("JavaScriptException value = ");
169 if( value instanceof Throwable ) {
170 ((Throwable )value).printStackTrace(printWriter);
171 }
172 else {
173 printWriter.println(value);
174 }
175 }
176 else if( throwable_ != null && throwable_ instanceof WrappedException ) {
177 final WrappedException wrappedException = (WrappedException)throwable_;
178 printWriter.print("WrappedException: ");
179 wrappedException.printStackTrace(printWriter);
180
181 final Throwable innerException = wrappedException.getWrappedException();
182 if( innerException == null ) {
183 printWriter.println("Inside wrapped exception: null");
184 }
185 else {
186 printWriter.println("Inside wrapped exception:");
187 innerException.printStackTrace(printWriter);
188 }
189 }
190 else if( throwable_ != null ) {
191 printWriter.println( "Enclosed exception: " );
192 throwable_.printStackTrace( printWriter );
193 }
194
195 if( scriptSourceCode_ != null && scriptSourceCode_.length() > 0 ) {
196 printWriter.println("== CALLING JAVASCRIPT ==");
197 printWriter.println(scriptSourceCode_);
198 }
199 printWriter.println("======= EXCEPTION END ========");
200
201 return stringWriter.toString();
202 }
203
204
205
209 public String getScriptSourceCode() {
210 return scriptSourceCode_;
211 }
212
213
214
221 public String getFailingLine() {
222 final int lineNumber = getFailingLineNumber();
223 if( lineNumber == -1 ) {
224 return "<no source>";
225 }
226
227 try {
228 final BufferedReader reader = new BufferedReader ( new StringReader (scriptSourceCode_) );
229 for( int i=0; i<lineNumber-1; i++ ) {
230 reader.readLine();
231 }
232 final String result = reader.readLine();
233 reader.close();
234 return result;
235 }
236 catch( final IOException e ) {
237 e.printStackTrace();
239 }
240 return "";
241 }
242
243
244
251 public int getFailingLineNumber() {
252 if( scriptSourceCode_ == null ) {
253 return -1;
254 }
255
256 if( throwable_ instanceof EcmaError ) {
257 final EcmaError ecmaError = (EcmaError)throwable_;
258 return ecmaError.lineNumber();
259 }
260
261 return -1;
262 }
263 }
264 |
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