Class UtilEvalError

All Implemented Interfaces:
Direct Known Subclasses:
Capabilities.Unavailable, ClassPathException, UtilTargetError

public class UtilEvalError
extends java.lang.Exception

UtilEvalError is an error corresponding to an EvalError but thrown by a utility or other class that does not have the caller context (Node) available to it. A normal EvalError must supply the caller Node in order for error messages to be pinned to the correct line and location in the script. UtilEvalError is a checked exception that is *not* a subtype of EvalError, but instead must be caught and rethrown as an EvalError by the a nearest location with context. The method toEvalError( Node ) should be used to throw the EvalError, supplying the node.

To summarize: Utilities throw UtilEvalError. ASTs throw EvalError. ASTs catch UtilEvalError and rethrow it as EvalError using toEvalError( Node ).

Philosophically, EvalError and UtilEvalError corrospond to RuntimeException. However they are constrained in this way in order to add the context for error reporting.

See Also:
UtilTargetError, Serialized Form

Constructor Summary
protected UtilEvalError()
  UtilEvalError(java.lang.String s)
Method Summary
 EvalError toEvalError(bsh.SimpleNode node, CallStack callstack)
 EvalError toEvalError(java.lang.String msg, bsh.SimpleNode node, CallStack callstack)
          Re-throw as an eval error, prefixing msg to the message and specifying the node.
Methods inherited from class java.lang.Throwable
fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail


protected UtilEvalError()


public UtilEvalError(java.lang.String s)
Method Detail


public EvalError toEvalError(java.lang.String msg,
                             bsh.SimpleNode node,
                             CallStack callstack)
Re-throw as an eval error, prefixing msg to the message and specifying the node. If a node already exists the addNode is ignored.

msg - may be null for no additional message.
See Also:


public EvalError toEvalError(bsh.SimpleNode node,
                             CallStack callstack)

2000 :-)