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annotate src/luan/LuaException.java @ 40:e3624b7cd603

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implement stack trace git-svn-id: https://luan-java.googlecode.com/svn/trunk@41 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Fri, 21 Dec 2012 10:45:54 +0000
parents 8a57ebfdfd78
children 786699c78837
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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1 package luan;
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4 public class LuaException extends Exception {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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6 public LuaException(LuaState lua,LuaElement el,String msg) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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7 super(hideNull(msg)+stackTrace(lua,el));
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8 }
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10 public LuaException(LuaState lua,LuaElement el,Exception cause) {
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11 super(hideNull(cause.getMessage())+stackTrace(lua,el),cause);
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12 }
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14 private static String hideNull(String s) {
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15 return s==null ? "" : s;
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16 }
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18 private static String stackTrace(LuaState lua,LuaElement el) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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19 StringBuilder buf = new StringBuilder();
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20 int i = lua.stackTrace.size() - 1;
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21 do {
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22 StackTraceElement stackTraceElement = lua.stackTrace.get(i);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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23 buf.append( "\n\t" ).append( el.toString(stackTraceElement.fnName) );
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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24 el = stackTraceElement.call;
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parents: 37
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25 } while( --i >= 0 );
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26 return buf.toString();
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27 }
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28 }