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Java > Open Source Codes > bsh > BSHThrowStatement


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3  * This file is part of the BeanShell Java Scripting distribution. *
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13  * Code is Pat Niemeyer. Portions created by Pat Niemeyer are Copyright *
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32  *****************************************************************************/
33
34
35 package bsh;
36
37 class BSHThrowStatement extends SimpleNode
38 {
39     BSHThrowStatement(int id) { super(id); }
40
41     public Object JavaDoc eval( CallStack callstack, Interpreter interpreter)
42         throws EvalError
43     {
44         Object JavaDoc obj = ((SimpleNode)jjtGetChild(0)).eval(callstack, interpreter);
45
46         // need to loosen this to any throwable... do we need to handle
47 // that in interpreter somewhere? check first...
48 if(!(obj instanceof Exception JavaDoc))
49             throw new EvalError("Expression in 'throw' must be Exception type",
50                 this, callstack );
51
52         // wrap the exception in a TargetException to propogate it up
53 throw new TargetError( (Exception JavaDoc)obj, this, callstack );
54     }
55 }
56
57
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