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annotate core/src/luan/LuanException.java @ 645:859c0dedc8b6

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remove LuanSource
author Franklin Schmidt <fschmidt@gmail.com>
date Tue, 29 Mar 2016 18:09:51 -0600
parents 60c549d43988
children cdc70de628b5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 package luan;
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3 import java.io.StringWriter;
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4 import java.io.PrintWriter;
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7 public final class LuanException extends Exception implements DeepCloneable {
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8 private LuanTable table = new LuanTable();
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10 private LuanException(String msg,Throwable cause) {
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11 super(msg,cause);
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12 }
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14 public LuanException(LuanState luan,Object msg) throws LuanException {
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15 this( luan.toString(msg), msg instanceof Throwable ? (Throwable)msg : null );
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16 table.rawPut( "java", this );
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17 table.rawPut( "message", msg );
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18 table.rawPut( "message_string", luan.toString(msg) );
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19 /*
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20 for( StackTraceElement ste : luan.stackTrace ) {
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21 LuanTable tbl = new LuanTable();
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22 tbl.rawPut( "source", ste.call.source.name );
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23 tbl.rawPut( "line", ste.call.lineNumber() );
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24 tbl.rawPut( "call_to", ste.fnName );
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25 table.rawPut( table.rawLength() + 1, tbl );
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26 }
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27 */
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28 LuanTable metatable = new LuanTable();
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29 table.setMetatable(metatable);
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30 try {
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31 table.rawPut( "throw", new LuanJavaFunction(
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32 LuanException.class.getMethod( "throwThis" ), this
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33 ) );
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34 metatable.rawPut( "__to_string", new LuanJavaFunction(
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35 LuanException.class.getMethod( "__to_string", LuanTable.class ), null
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36 ) );
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37 } catch(NoSuchMethodException e) {
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38 throw new RuntimeException(e);
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39 }
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40 }
2df768b926aa start Luan
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41
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42 @Override public LuanException shallowClone() {
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43 return new LuanException(getMessage(),getCause());
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44 }
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45
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46 @Override public void deepenClone(DeepCloneable dc,DeepCloner cloner) {
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47 LuanException clone = (LuanException)dc;
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48 clone.table = (LuanTable)cloner.get(table);
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49 }
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51 public LuanTable table() {
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52 return table;
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53 }
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54
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55 public void throwThis() throws LuanException {
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56 throw this;
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57 }
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58
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59 public String getFullMessage() {
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60 return __to_string(table);
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61 }
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62
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63 public static String __to_string(LuanTable table) {
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64 /*
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65 StringBuilder buf = new StringBuilder();
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66
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67 Object msg = table.rawGet("message");
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68 String msgStr = (String)table.rawGet("message_string");
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69 buf.append( msgStr );
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71 for( int i = table.rawLength(); i>=1; i-- ) {
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72 LuanTable tbl = (LuanTable)table.rawGet(i);
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73 buf.append( "\n\t" ).append( tbl.rawGet("source") ).append( " line " ).append( tbl.rawGet("line") );
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74 Object callTo = tbl.rawGet("call_to");
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75 if( callTo != null )
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76 buf.append( " in call to '" ).append( callTo ).append( "'" );
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77 }
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78
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79 if( msg instanceof Throwable ) {
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80 buf.append( "\nCaused by: " );
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81 Throwable cause = (Throwable)msg;
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82 StringWriter sw = new StringWriter();
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83 cause.printStackTrace(new PrintWriter(sw));
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84 buf.append( sw );
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85 }
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87 return buf.toString();
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88 */
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89 LuanException ex = (LuanException)table.rawGet("java");
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90 StringWriter sw = new StringWriter();
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91 ex.printStackTrace(new PrintWriter(sw));
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92 return sw.toString();
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93 }
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95 }