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1 /*
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2 * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This
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3 * code is released under a tri EPL/GPL/LGPL license. You can use it,
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4 * redistribute it and/or modify it under the terms of the:
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5 *
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6 * Eclipse Public License version 1.0
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7 * GNU General Public License version 2
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8 * GNU Lesser General Public License version 2.1
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9 */
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10 package com.oracle.truffle.ruby.runtime.control;
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11
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12 import com.oracle.truffle.api.*;
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13 import com.oracle.truffle.ruby.runtime.*;
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14 import com.oracle.truffle.ruby.runtime.core.*;
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15 import com.oracle.truffle.ruby.runtime.objects.*;
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16
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17 public final class ExceptionTranslator {
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18
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19 /**
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20 * Translate a Java exception into a Ruby exception.
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21 */
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22 public static RubyBasicObject translateException(RubyContext context, Throwable exception) {
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23 assert context != null;
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24 assert exception != null;
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25
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26 CompilerAsserts.neverPartOfCompilation();
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27
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28 // RaiseException already includes the Ruby exception
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29
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30 if (exception instanceof RaiseException) {
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31 return ((RaiseException) exception).getRubyException();
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32 }
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33
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34 // Translate divide by zero into ZeroDivisionError
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35
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36 if (exception instanceof ArithmeticException && (exception.getMessage().endsWith("divide by zero") || exception.getMessage().endsWith("/ by zero"))) {
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37 return new RubyException(context.getCoreLibrary().getZeroDivisionErrorClass(), "divided by 0");
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38 }
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39
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40 /*
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41 * If we can't translate the exception into a Ruby exception, then the error is ours and we
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42 * report it as as RubyTruffleError. If a programmer sees this then it's a bug in our
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43 * implementation.
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44 */
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45
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46 if (context.getConfiguration().getPrintJavaExceptions()) {
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47 exception.printStackTrace();
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48 }
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49
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50 String message;
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51
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52 if (exception.getMessage() == null) {
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53 message = exception.getClass().getSimpleName();
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54 } else {
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55 message = exception.getMessage();
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56 }
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57
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58 return new RubyException(context.getCoreLibrary().getRubyTruffleErrorClass(), message);
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59 }
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60
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61 }
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