Mercurial Hosting > luan
annotate src/luan/LuaException.java @ 43:80b67b1a653c
implement string lib
git-svn-id: https://luan-java.googlecode.com/svn/trunk@44 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Tue, 25 Dec 2012 03:42:42 +0000 |
parents | 786699c78837 |
children | 57054fa43189 |
rev | line source |
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1
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1 package luan; |
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2 |
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3 |
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4 public class LuaException extends Exception { |
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5 private final String stackTrace; |
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6 |
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7 public LuaException(LuaState lua,LuaElement el,Object msg) { |
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8 super(message(msg),cause(msg)); |
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9 stackTrace = stackTrace(lua,el,msg); |
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10 } |
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11 |
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12 @Override public String getMessage() { |
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13 return super.getMessage() + stackTrace; |
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14 } |
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15 |
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16 private String message() { |
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17 return super.getMessage(); |
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18 } |
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19 |
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20 private static Throwable cause(Object msg) { |
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21 return msg instanceof Throwable ? (Throwable)msg : null; |
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22 } |
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23 |
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24 private static String message(Object msg) { |
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25 if( msg instanceof LuaException ) { |
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26 LuaException le = (LuaException)msg; |
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27 return le.message(); |
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28 } else if( msg instanceof Throwable ) { |
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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29 Throwable t = (Throwable)msg; |
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30 return t.getMessage(); |
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31 } else { |
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32 return msg.toString(); |
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33 } |
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34 } |
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36 private static String stackTrace(LuaState lua,LuaElement el,Object msg) { |
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37 StringBuilder buf = new StringBuilder(); |
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38 for( int i = lua.stackTrace.size() - 1; i>=0; i-- ) { |
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39 StackTraceElement stackTraceElement = lua.stackTrace.get(i); |
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40 buf.append( "\n\t" ).append( el.toString(stackTraceElement.fnName) ); |
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41 el = stackTraceElement.call; |
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42 } |
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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43 if( msg instanceof LuaException ) { |
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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44 LuaException le = (LuaException)msg; |
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45 buf.append( "\ncaused by:" ).append( le.stackTrace ); |
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46 } |
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47 return buf.toString(); |
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48 } |
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49 } |