Examples with JavaScriptException org.mozilla.javascript.JavaScriptException used on opensource projects

Example 1 with JavaScriptException

use of org.mozilla.javascript.JavaScriptException in project cxf by apache.

the class JavascriptTestUtilities method rhinoCallExpectingException.

/**
 * Call a Javascript function, identified by name, on a set of arguments. Optionally, expect it to throw
 * an exception.
 *
 * @param expectingException
 * @param functionName
 * @param args
 * @return
 */
public Object rhinoCallExpectingException(final Object expectingException, final String functionName, final Object... args) {
    Object fObj = rhinoScope.get(functionName, rhinoScope);
    if (!(fObj instanceof Function)) {
        throw new RuntimeException("Missing test function " + functionName);
    }
    Function function = (Function) fObj;
    try {
        return function.call(rhinoContext, rhinoScope, rhinoScope, args);
    } catch (RhinoException angryRhino) {
        if (expectingException != null && angryRhino instanceof JavaScriptException) {
            JavaScriptException jse = (JavaScriptException) angryRhino;
            Assert.assertEquals(jse.getValue(), expectingException);
            return null;
        }
        String trace = angryRhino.getScriptStackTrace();
        Assert.fail("JavaScript error: " + angryRhino.toString() + " " + trace);
    } catch (JavaScriptAssertionFailed assertion) {
        Assert.fail(assertion.getMessage());
    }
    return null;
}

Example 2 with JavaScriptException

use of org.mozilla.javascript.JavaScriptException in project pentaho-kettle by pentaho.

the class ScriptValuesMetaMod method check.

public void check(List<CheckResultInterface> remarks, TransMeta transMeta, StepMeta stepMeta, RowMetaInterface prev, String[] input, String[] output, RowMetaInterface info, VariableSpace space, Repository repository, IMetaStore metaStore) {
    boolean error_found = false;
    String error_message = "";
    CheckResult cr;
    Context jscx;
    Scriptable jsscope;
    Script jsscript;
    jscx = ContextFactory.getGlobal().enterContext();
    jsscope = jscx.initStandardObjects(null, false);
    try {
        jscx.setOptimizationLevel(Integer.valueOf(transMeta.environmentSubstitute(optimizationLevel)));
    } catch (NumberFormatException nfe) {
        error_message = "Error with optimization level.  Could not convert the value of " + transMeta.environmentSubstitute(optimizationLevel) + " to an integer.";
        cr = new CheckResult(CheckResultInterface.TYPE_RESULT_ERROR, error_message, stepMeta);
        remarks.add(cr);
    } catch (IllegalArgumentException iae) {
        cr = new CheckResult(CheckResultInterface.TYPE_RESULT_ERROR, iae.getMessage(), stepMeta);
        remarks.add(cr);
    }
    String strActiveStartScriptName = "";
    String strActiveEndScriptName = "";
    String strActiveScript = "";
    String strActiveStartScript = "";
    String strActiveEndScript = "";
    // Building the Scripts
    if (jsScripts.length > 0) {
        for (int i = 0; i < jsScripts.length; i++) {
            if (jsScripts[i].isTransformScript()) {
                // strActiveScriptName =jsScripts[i].getScriptName();
                strActiveScript = jsScripts[i].getScript();
            } else if (jsScripts[i].isStartScript()) {
                strActiveStartScriptName = jsScripts[i].getScriptName();
                strActiveStartScript = jsScripts[i].getScript();
            } else if (jsScripts[i].isEndScript()) {
                strActiveEndScriptName = jsScripts[i].getScriptName();
                strActiveEndScript = jsScripts[i].getScript();
            }
        }
    }
    if (prev != null && strActiveScript.length() > 0) {
        cr = new CheckResult(CheckResultInterface.TYPE_RESULT_OK, BaseMessages.getString(PKG, "ScriptValuesMetaMod.CheckResult.ConnectedStepOK", String.valueOf(prev.size())), stepMeta);
        remarks.add(cr);
        // Adding the existing Scripts to the Context
        for (int i = 0; i < getNumberOfJSScripts(); i++) {
            Scriptable jsR = Context.toObject(jsScripts[i].getScript(), jsscope);
            jsscope.put(jsScripts[i].getScriptName(), jsscope, jsR);
        }
        // Modification for Additional Script parsing
        try {
            if (getAddClasses() != null) {
                for (int i = 0; i < getAddClasses().length; i++) {
                    Object jsOut = Context.javaToJS(getAddClasses()[i].getAddObject(), jsscope);
                    ScriptableObject.putProperty(jsscope, getAddClasses()[i].getJSName(), jsOut);
                }
            }
        } catch (Exception e) {
            error_message = ("Couldn't add JavaClasses to Context! Error:");
            cr = new CheckResult(CheckResultInterface.TYPE_RESULT_ERROR, error_message, stepMeta);
            remarks.add(cr);
        }
        // Adding some default JavaScriptFunctions to the System
        try {
            Context.javaToJS(ScriptValuesAddedFunctions.class, jsscope);
            ((ScriptableObject) jsscope).defineFunctionProperties(ScriptValuesAddedFunctions.jsFunctionList, ScriptValuesAddedFunctions.class, ScriptableObject.DONTENUM);
        } catch (Exception ex) {
            error_message = "Couldn't add Default Functions! Error:" + Const.CR + ex.toString();
            cr = new CheckResult(CheckResultInterface.TYPE_RESULT_ERROR, error_message, stepMeta);
            remarks.add(cr);
        }
        // Adding some Constants to the JavaScript
        try {
            jsscope.put("SKIP_TRANSFORMATION", jsscope, Integer.valueOf(ScriptValuesMod.SKIP_TRANSFORMATION));
            jsscope.put("ABORT_TRANSFORMATION", jsscope, Integer.valueOf(ScriptValuesMod.ABORT_TRANSFORMATION));
            jsscope.put("ERROR_TRANSFORMATION", jsscope, Integer.valueOf(ScriptValuesMod.ERROR_TRANSFORMATION));
            jsscope.put("CONTINUE_TRANSFORMATION", jsscope, Integer.valueOf(ScriptValuesMod.CONTINUE_TRANSFORMATION));
        } catch (Exception ex) {
            error_message = "Couldn't add Transformation Constants! Error:" + Const.CR + ex.toString();
            cr = new CheckResult(CheckResultInterface.TYPE_RESULT_ERROR, error_message, stepMeta);
            remarks.add(cr);
        }
        try {
            ScriptValuesModDummy dummyStep = new ScriptValuesModDummy(prev, transMeta.getStepFields(stepMeta));
            Scriptable jsvalue = Context.toObject(dummyStep, jsscope);
            jsscope.put("_step_", jsscope, jsvalue);
            Object[] row = new Object[prev.size()];
            Scriptable jsRowMeta = Context.toObject(prev, jsscope);
            jsscope.put("rowMeta", jsscope, jsRowMeta);
            for (int i = 0; i < prev.size(); i++) {
                ValueMetaInterface valueMeta = prev.getValueMeta(i);
                Object valueData = null;
                // 
                if (valueMeta.isDate()) {
                    valueData = new Date();
                }
                if (valueMeta.isString()) {
                    valueData = "test value test value test value test value test value " + "test value test value test value test value test value";
                }
                if (valueMeta.isInteger()) {
                    valueData = Long.valueOf(0L);
                }
                if (valueMeta.isNumber()) {
                    valueData = new Double(0.0);
                }
                if (valueMeta.isBigNumber()) {
                    valueData = BigDecimal.ZERO;
                }
                if (valueMeta.isBoolean()) {
                    valueData = Boolean.TRUE;
                }
                if (valueMeta.isBinary()) {
                    valueData = new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
                }
                row[i] = valueData;
                if (isCompatible()) {
                    Value value = valueMeta.createOriginalValue(valueData);
                    Scriptable jsarg = Context.toObject(value, jsscope);
                    jsscope.put(valueMeta.getName(), jsscope, jsarg);
                } else {
                    Scriptable jsarg = Context.toObject(valueData, jsscope);
                    jsscope.put(valueMeta.getName(), jsscope, jsarg);
                }
            }
            // Add support for Value class (new Value())
            Scriptable jsval = Context.toObject(Value.class, jsscope);
            jsscope.put("Value", jsscope, jsval);
            // 
            if (isCompatible()) {
                Row v2Row = RowMeta.createOriginalRow(prev, row);
                Scriptable jsV2Row = Context.toObject(v2Row, jsscope);
                jsscope.put("row", jsscope, jsV2Row);
            } else {
                Scriptable jsRow = Context.toObject(row, jsscope);
                jsscope.put("row", jsscope, jsRow);
            }
        } catch (Exception ev) {
            error_message = "Couldn't add Input fields to Script! Error:" + Const.CR + ev.toString();
            cr = new CheckResult(CheckResultInterface.TYPE_RESULT_ERROR, error_message, stepMeta);
            remarks.add(cr);
        }
        try {
            // Checking for StartScript
            if (strActiveStartScript != null && strActiveStartScript.length() > 0) {
                /* Object startScript = */
                jscx.evaluateString(jsscope, strActiveStartScript, "trans_Start", 1, null);
                error_message = "Found Start Script. " + strActiveStartScriptName + " Processing OK";
                cr = new CheckResult(CheckResultInterface.TYPE_RESULT_OK, error_message, stepMeta);
                remarks.add(cr);
            }
        } catch (Exception e) {
            error_message = "Couldn't process Start Script! Error:" + Const.CR + e.toString();
            cr = new CheckResult(CheckResultInterface.TYPE_RESULT_ERROR, error_message, stepMeta);
            remarks.add(cr);
        }
        try {
            jsscript = jscx.compileString(strActiveScript, "script", 1, null);
            cr = new CheckResult(CheckResultInterface.TYPE_RESULT_OK, BaseMessages.getString(PKG, "ScriptValuesMetaMod.CheckResult.ScriptCompiledOK"), stepMeta);
            remarks.add(cr);
            try {
                jsscript.exec(jscx, jsscope);
                cr = new CheckResult(CheckResultInterface.TYPE_RESULT_OK, BaseMessages.getString(PKG, "ScriptValuesMetaMod.CheckResult.ScriptCompiledOK2"), stepMeta);
                remarks.add(cr);
                if (fieldname.length > 0) {
                    StringBuilder message = new StringBuilder(BaseMessages.getString(PKG, "ScriptValuesMetaMod.CheckResult.FailedToGetValues", String.valueOf(fieldname.length)) + Const.CR + Const.CR);
                    if (error_found) {
                        cr = new CheckResult(CheckResultInterface.TYPE_RESULT_ERROR, message.toString(), stepMeta);
                    } else {
                        cr = new CheckResult(CheckResultInterface.TYPE_RESULT_OK, message.toString(), stepMeta);
                    }
                    remarks.add(cr);
                }
            } catch (JavaScriptException jse) {
                Context.exit();
                error_message = BaseMessages.getString(PKG, "ScriptValuesMetaMod.CheckResult.CouldNotExecuteScript") + Const.CR + jse.toString();
                cr = new CheckResult(CheckResultInterface.TYPE_RESULT_ERROR, error_message, stepMeta);
                remarks.add(cr);
            } catch (Exception e) {
                Context.exit();
                error_message = BaseMessages.getString(PKG, "ScriptValuesMetaMod.CheckResult.CouldNotExecuteScript2") + Const.CR + e.toString();
                cr = new CheckResult(CheckResultInterface.TYPE_RESULT_ERROR, error_message, stepMeta);
                remarks.add(cr);
            }
            // Checking End Script
            try {
                if (strActiveEndScript != null && strActiveEndScript.length() > 0) {
                    /* Object endScript = */
                    jscx.evaluateString(jsscope, strActiveEndScript, "trans_End", 1, null);
                    error_message = "Found End Script. " + strActiveEndScriptName + " Processing OK";
                    cr = new CheckResult(CheckResultInterface.TYPE_RESULT_OK, error_message, stepMeta);
                    remarks.add(cr);
                }
            } catch (Exception e) {
                error_message = "Couldn't process End Script! Error:" + Const.CR + e.toString();
                cr = new CheckResult(CheckResultInterface.TYPE_RESULT_ERROR, error_message, stepMeta);
                remarks.add(cr);
            }
        } catch (Exception e) {
            Context.exit();
            error_message = BaseMessages.getString(PKG, "ScriptValuesMetaMod.CheckResult.CouldNotCompileScript") + Const.CR + e.toString();
            cr = new CheckResult(CheckResultInterface.TYPE_RESULT_ERROR, error_message, stepMeta);
            remarks.add(cr);
        }
    } else {
        Context.exit();
        error_message = BaseMessages.getString(PKG, "ScriptValuesMetaMod.CheckResult.CouldNotGetFieldsFromPreviousStep");
        cr = new CheckResult(CheckResultInterface.TYPE_RESULT_ERROR, error_message, stepMeta);
        remarks.add(cr);
    }
    // See if we have input streams leading to this step!
    if (input.length > 0) {
        cr = new CheckResult(CheckResultInterface.TYPE_RESULT_OK, BaseMessages.getString(PKG, "ScriptValuesMetaMod.CheckResult.ConnectedStepOK2"), stepMeta);
        remarks.add(cr);
    } else {
        cr = new CheckResult(CheckResultInterface.TYPE_RESULT_ERROR, BaseMessages.getString(PKG, "ScriptValuesMetaMod.CheckResult.NoInputReceived"), stepMeta);
        remarks.add(cr);
    }
}

Example 3 with JavaScriptException

use of org.mozilla.javascript.JavaScriptException in project pentaho-kettle by pentaho.

the class ScriptDialog method test.

private boolean test(boolean getvars, boolean popup) {
    boolean retval = true;
    StyledTextComp wScript = getStyledTextComp();
    String scr = wScript.getText();
    KettleException testException = null;
    Context jscx;
    Scriptable jsscope;
    // Script jsscript;
    // Making Refresh to get Active Script State
    refreshScripts();
    jscx = ContextFactory.getGlobal().enterContext();
    jscx.setOptimizationLevel(-1);
    jsscope = jscx.initStandardObjects(null, false);
    // Adding the existing Scripts to the Context
    for (int i = 0; i < folder.getItemCount(); i++) {
        StyledTextComp sItem = getStyledTextComp(folder.getItem(i));
        Scriptable jsR = Context.toObject(sItem.getText(), jsscope);
        jsscope.put(folder.getItem(i).getText(), jsscope, jsR);
    }
    // Adding the Name of the Transformation to the Context
    jsscope.put("_TransformationName_", jsscope, this.stepname);
    try {
        RowMetaInterface rowMeta = transMeta.getPrevStepFields(stepname);
        if (rowMeta != null) {
            ScriptDummy dummyStep = new ScriptDummy(rowMeta, transMeta.getStepFields(stepname));
            Scriptable jsvalue = Context.toObject(dummyStep, jsscope);
            jsscope.put("_step_", jsscope, jsvalue);
            // Modification for Additional Script parsing
            try {
                if (input.getAddClasses() != null) {
                    for (int i = 0; i < input.getAddClasses().length; i++) {
                        Object jsOut = Context.javaToJS(input.getAddClasses()[i].getAddObject(), jsscope);
                        ScriptableObject.putProperty(jsscope, input.getAddClasses()[i].getJSName(), jsOut);
                    }
                }
            } catch (Exception e) {
                testException = new KettleException(BaseMessages.getString(PKG, "ScriptDialog.CouldNotAddToContext", e.toString()));
                retval = false;
            }
            // Adding some default JavaScriptFunctions to the System
            try {
                Context.javaToJS(ScriptAddedFunctions.class, jsscope);
                ((ScriptableObject) jsscope).defineFunctionProperties(jsFunctionList, ScriptAddedFunctions.class, ScriptableObject.DONTENUM);
            } catch (Exception ex) {
                testException = new KettleException(BaseMessages.getString(PKG, "ScriptDialog.CouldNotAddDefaultFunctions", ex.toString()));
                retval = false;
            }
            // Adding some Constants to the JavaScript
            try {
                jsscope.put("SKIP_TRANSFORMATION", jsscope, Integer.valueOf(SKIP_TRANSFORMATION));
                jsscope.put("ABORT_TRANSFORMATION", jsscope, Integer.valueOf(ABORT_TRANSFORMATION));
                jsscope.put("ERROR_TRANSFORMATION", jsscope, Integer.valueOf(ERROR_TRANSFORMATION));
                jsscope.put("CONTINUE_TRANSFORMATION", jsscope, Integer.valueOf(CONTINUE_TRANSFORMATION));
            } catch (Exception ex) {
                testException = new KettleException(BaseMessages.getString(PKG, "ScriptDialog.CouldNotAddTransformationConstants", ex.toString()));
                retval = false;
            }
            try {
                Object[] row = new Object[rowMeta.size()];
                Scriptable jsRowMeta = Context.toObject(rowMeta, jsscope);
                jsscope.put("rowMeta", jsscope, jsRowMeta);
                for (int i = 0; i < rowMeta.size(); i++) {
                    ValueMetaInterface valueMeta = rowMeta.getValueMeta(i);
                    Object valueData = null;
                    // 
                    if (valueMeta.isDate()) {
                        valueData = new Date();
                    }
                    if (valueMeta.isString()) {
                        valueData = "test value test value test value test value test " + "value test value test value test value test value test value";
                    }
                    if (valueMeta.isInteger()) {
                        valueData = Long.valueOf(0L);
                    }
                    if (valueMeta.isNumber()) {
                        valueData = new Double(0.0);
                    }
                    if (valueMeta.isBigNumber()) {
                        valueData = BigDecimal.ZERO;
                    }
                    if (valueMeta.isBoolean()) {
                        valueData = Boolean.TRUE;
                    }
                    if (valueMeta.isBinary()) {
                        valueData = new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
                    }
                    if (valueMeta.isStorageBinaryString()) {
                        valueMeta.setStorageType(ValueMetaInterface.STORAGE_TYPE_NORMAL);
                    }
                    row[i] = valueData;
                    Scriptable jsarg = Context.toObject(valueData, jsscope);
                    jsscope.put(valueMeta.getName(), jsscope, jsarg);
                }
                // OK, for these input values, we're going to allow the user to edit the default values...
                // We are displaying a
                // 2)
                // Add support for Value class (new Value())
                Scriptable jsval = Context.toObject(Value.class, jsscope);
                jsscope.put("Value", jsscope, jsval);
                // Add the old style row object for compatibility reasons...
                // 
                Scriptable jsRow = Context.toObject(row, jsscope);
                jsscope.put("row", jsscope, jsRow);
            } catch (Exception ev) {
                testException = new KettleException(BaseMessages.getString(PKG, "ScriptDialog.CouldNotAddInputFields", ev.toString()));
                retval = false;
            }
            try {
                // Checking for StartScript
                if (strActiveStartScript != null && !folder.getSelection().getText().equals(strActiveStartScript) && strActiveStartScript.length() > 0) {
                    String strStartScript = getStyledTextComp(folder.getItem(getCTabPosition(strActiveStartScript))).getText();
                    /* Object startScript = */
                    jscx.evaluateString(jsscope, strStartScript, "trans_Start", 1, null);
                }
            } catch (Exception e) {
                testException = new KettleException(BaseMessages.getString(PKG, "ScriptDialog.CouldProcessStartScript", e.toString()));
                retval = false;
            }
            try {
                Script evalScript = jscx.compileString(scr, "script", 1, null);
                evalScript.exec(jscx, jsscope);
                if (getvars) {
                    ScriptNode tree = parseVariables(jscx, jsscope, scr, "script", 1, null);
                    for (int i = 0; i < tree.getParamAndVarCount(); i++) {
                        String varname = tree.getParamOrVarName(i);
                        if (!varname.equalsIgnoreCase("row") && !varname.equalsIgnoreCase("trans_Status")) {
                            int type = ValueMetaInterface.TYPE_STRING;
                            int length = -1, precision = -1;
                            Object result = jsscope.get(varname, jsscope);
                            if (result != null) {
                                String classname = result.getClass().getName();
                                if (classname.equalsIgnoreCase("java.lang.Byte")) {
                                    // MAX = 127
                                    type = ValueMetaInterface.TYPE_INTEGER;
                                    length = 3;
                                    precision = 0;
                                } else if (classname.equalsIgnoreCase("java.lang.Integer")) {
                                    // MAX = 2147483647
                                    type = ValueMetaInterface.TYPE_INTEGER;
                                    length = 9;
                                    precision = 0;
                                } else if (classname.equalsIgnoreCase("java.lang.Long")) {
                                    // MAX = 9223372036854775807
                                    type = ValueMetaInterface.TYPE_INTEGER;
                                    length = 18;
                                    precision = 0;
                                } else if (classname.equalsIgnoreCase("java.lang.Double")) {
                                    type = ValueMetaInterface.TYPE_NUMBER;
                                    length = 16;
                                    precision = 2;
                                } else if (classname.equalsIgnoreCase("org.mozilla.javascript.NativeDate") || classname.equalsIgnoreCase("java.util.Date")) {
                                    type = ValueMetaInterface.TYPE_DATE;
                                } else if (classname.equalsIgnoreCase("java.lang.Boolean")) {
                                    type = ValueMetaInterface.TYPE_BOOLEAN;
                                }
                            }
                            TableItem ti = new TableItem(wFields.table, SWT.NONE);
                            ti.setText(1, varname);
                            ti.setText(2, "");
                            ti.setText(3, ValueMetaFactory.getValueMetaName(type));
                            ti.setText(4, length >= 0 ? ("" + length) : "");
                            ti.setText(5, precision >= 0 ? ("" + precision) : "");
                            // If the variable name exists in the input, suggest to replace the value
                            // 
                            ti.setText(6, (rowMeta.indexOfValue(varname) >= 0) ? YES_NO_COMBO[1] : YES_NO_COMBO[0]);
                        }
                    }
                    wFields.removeEmptyRows();
                    wFields.setRowNums();
                    wFields.optWidth(true);
                }
            // End Script!
            } catch (EvaluatorException e) {
                String position = "(" + e.lineNumber() + ":" + e.columnNumber() + ")";
                String message = BaseMessages.getString(PKG, "ScriptDialog.Exception.CouldNotExecuteScript", position);
                testException = new KettleException(message, e);
                retval = false;
            } catch (JavaScriptException e) {
                String position = "(" + e.lineNumber() + ":" + e.columnNumber() + ")";
                String message = BaseMessages.getString(PKG, "ScriptDialog.Exception.CouldNotExecuteScript", position);
                testException = new KettleException(message, e);
                retval = false;
            } catch (Exception e) {
                testException = new KettleException(BaseMessages.getString(PKG, "ScriptDialog.Exception.CouldNotExecuteScript2"), e);
                retval = false;
            }
        } else {
            testException = new KettleException(BaseMessages.getString(PKG, "ScriptDialog.Exception.CouldNotGetFields"));
            retval = false;
        }
        if (popup) {
            if (retval) {
                if (!getvars) {
                    MessageBox mb = new MessageBox(shell, SWT.OK | SWT.ICON_INFORMATION);
                    mb.setMessage(BaseMessages.getString(PKG, "ScriptDialog.ScriptCompilationOK") + Const.CR);
                    mb.setText("OK");
                    mb.open();
                }
            } else {
                new ErrorDialog(shell, BaseMessages.getString(PKG, "ScriptDialog.TestFailed.DialogTitle"), BaseMessages.getString(PKG, "ScriptDialog.TestFailed.DialogMessage"), testException);
            }
        }
    } catch (KettleException ke) {
        retval = false;
        new ErrorDialog(shell, BaseMessages.getString(PKG, "ScriptDialog.TestFailed.DialogTitle"), BaseMessages.getString(PKG, "ScriptDialog.TestFailed.DialogMessage"), ke);
    } finally {
        if (jscx != null) {
            Context.exit();
        }
    }
    return retval;
}

Example 4 with JavaScriptException

use of org.mozilla.javascript.JavaScriptException in project hackpad by dropbox.

the class StackTraceTest method runWithExpectedStackTrace.

private void runWithExpectedStackTrace(final String _source, final String _expectedStackTrace) {
    final ContextAction action = new ContextAction() {

        public Object run(Context cx) {
            final Scriptable scope = cx.initStandardObjects();
            try {
                cx.evaluateString(scope, _source, "test.js", 0, null);
            } catch (final JavaScriptException e) {
                assertEquals(_expectedStackTrace, e.getScriptStackTrace());
                return null;
            }
            throw new RuntimeException("Exception expected!");
        }
    };
    Utils.runWithOptimizationLevel(action, -1);
}

Example 5 with JavaScriptException

use of org.mozilla.javascript.JavaScriptException in project jmeter by apache.

the class BSFJavaScriptEngine method handleError.

/**
 * @param t {@link Throwable}
 * @throws BSFException
 */
private void handleError(Throwable t) throws BSFException {
    Throwable target = t;
    if (t instanceof WrappedException) {
        target = ((WrappedException) t).getWrappedException();
    }
    String message = null;
    if (target instanceof JavaScriptException) {
        message = target.getLocalizedMessage();
        // Is it an exception wrapped in a JavaScriptException?
        Object value = ((JavaScriptException) target).getValue();
        if (value instanceof Throwable) {
            // likely a wrapped exception from a LiveConnect call.
            // Display its stack trace as a diagnostic
            target = (Throwable) value;
        }
    } else if (target instanceof EvaluatorException || target instanceof SecurityException) {
        message = target.getLocalizedMessage();
    } else if (target instanceof RuntimeException) {
        message = "Internal Error: " + target.toString();
    } else if (target instanceof StackOverflowError) {
        message = "Stack Overflow";
    }
    if (message == null) {
        message = target.toString();
    }
    if (target instanceof Error && !(target instanceof StackOverflowError)) {
        // a long stacktrace would end up on the user's console
        throw (Error) target;
    } else {
        throw new BSFException(BSFException.REASON_OTHER_ERROR, "JavaScript Error: " + message, target);
    }
}