felixlechA.script

TestExpr( inExpr ) - All - felixlecha
// Test if an expression is valid or not. It try to apply expression in a known valid expression.
function TestExpr( inExpr )
{
	// Create tmp property named : "Expression_Manager_Eval"
	var oEvalProp = ActiveSceneRoot.AddProperty("CustomProperty",false,"Expression_Manager_Eval");
	var pEval     = oEvalProp.AddParameter3( "fEval", siDouble, 0, -999999, 999999, true, false );

	// Create a tmp Valid expression
	var tmpExpr = pEval.AddExpression("0");
	var bReturn;

	try
	{
		// Try Apply Expr
		tmpExpr.definition.Value = inExpr;

		// Read Evaluate Value
		var fEvalValue =  pEval.Value;
		
		// Log Value
		LogMessage( "
Current Expression is valide.\n   value : " + fEvalValue );
		bReturn = 1;
	}
	catch(e)
	{
		LogMessage( "Current Expression Error :\n " + e.description );
		bReturn = 0;
	}

	// Delete tmp Property
	DeleteObj( oEvalProp );
	return bReturn;
}
// Test an expression
// TestExpr( "Fc + 1 + A" );
languages	class