Method invokeImpl

src/bsh/BshMethod.java:263–418

( 
		Object[] argValues, Interpreter interpreter, CallStack callstack,
			SimpleNode callerInfo, boolean overrideNameSpace )

	}

	private Object invokeImpl( 
		Object[] argValues, Interpreter interpreter, CallStack callstack,
			SimpleNode callerInfo, boolean overrideNameSpace ) 
		throws EvalError 
	{
		Class returnType = getReturnType();
		Class [] paramTypes = getParameterTypes();

		// If null callstack
		if ( callstack == null )
			callstack = new CallStack( declaringNameSpace );

		if ( argValues == null )
			argValues = new Object [] { };

		// Cardinality (number of args) mismatch
		if ( argValues.length != numArgs ) 
		{
		/*
			// look for help string
			try {
				// should check for null namespace here
				String help = 
					(String)declaringNameSpace.get(
					"bsh.help."+name, interpreter );

				interpreter.println(help);
				return Primitive.VOID;
			} catch ( Exception e ) {
				throw eval error
			}
		*/
			throw new EvalError( 
				"Wrong number of arguments for local method: " 
				+ name, callerInfo, callstack );
		}

		// Make the local namespace for the method invocation
		NameSpace localNameSpace;
		if ( overrideNameSpace )
			localNameSpace = callstack.top();
		else
		{
			localNameSpace = new NameSpace( declaringNameSpace, name );
			localNameSpace.isMethod = true;
		}
		// should we do this for both cases above?
		localNameSpace.setNode( callerInfo );

		// set the method parameters in the local namespace
		for(int i=0; i<numArgs; i++)
		{
			// Set typed variable
			if ( paramTypes[i] != null ) 
			{
				try {
					argValues[i] =
						//Types.getAssignableForm( argValues[i], paramTypes[i] );