Method getIndexAux

src/bsh/BSHPrimarySuffix.java:201–226

(
		Object obj, CallStack callstack, Interpreter interpreter, 
		SimpleNode callerInfo )

	/**
	*/
	static int getIndexAux(
		Object obj, CallStack callstack, Interpreter interpreter, 
		SimpleNode callerInfo ) 
		throws EvalError
	{
		if ( !obj.getClass().isArray() )
			throw new EvalError("Not an array", callerInfo, callstack );

		int index;
		try {
			Object indexVal = 
				((SimpleNode)callerInfo.jjtGetChild(0)).eval( 
					callstack, interpreter );
			if ( !(indexVal instanceof Primitive) )
				indexVal = Types.castObject(
					indexVal, Integer.TYPE, Types.ASSIGNMENT );
			index = ((Primitive)indexVal).intValue();
		} catch( UtilEvalError e ) {
			Interpreter.debug("doIndex: "+e);
			throw e.toEvalError( 
				"Arrays may only be indexed by integer types.", 
				callerInfo, callstack );
		}

		return index;
	}

	/**
		array index.