private string evaluateAnyExpression(ConfigSectionNode exprContainer, string expression)
{
try
{
var evl = new Evaluator( expression );
return evl.Evaluate();
}
catch(Exception error)
{
throw new ConfigException(StringConsts.CONFIGURATION_SCRIPT_EXPRESSION_EVAL_ERROR.Args( expression,
exprContainer.RootPath,
error.ToMessageWithType()),
error);
}
}
private bool evaluateBooleanConditionExpression(ConfigSectionNode exprContainer)
{
string expression = CoreConsts.UNKNOWN;
try
{
expression = exprContainer.Value;
var evl = new Evaluator( expression );
var evlResult = evl.Evaluate();
var condition = evlResult=="1" ||
evlResult.Equals("yes", StringComparison.InvariantCultureIgnoreCase) ||
evlResult.Equals("true", StringComparison.InvariantCultureIgnoreCase) ||
evlResult.Equals("t", StringComparison.InvariantCultureIgnoreCase);
exprContainer.m_Script_Bool_Condition_Result = condition;
return condition;
}
catch(Exception error)
{
throw new ConfigException(StringConsts.CONFIGURATION_SCRIPT_EXPRESSION_EVAL_ERROR.Args( expression,
exprContainer.RootPath,
error.ToMessageWithType()),
error);
}
}
private bool invokeEvaluator(NetSiteState netState, Evaluator evaluator)
{
if (netState==null) return false;
string evaluated = string.Empty;
lock(netState.m_Variables)
{
evaluated = evaluator.Evaluate(
(varName)=>
{
if (varName.StartsWith(VAR_EXPRESSION_PREFIX)&&varName.Length>VAR_EXPRESSION_PREFIX.Length)
{
NetSiteState._value lookedUp;
varName = varName.Substring(VAR_EXPRESSION_PREFIX.Length);
if (netState.m_Variables.TryGetValue(varName, out lookedUp)) return lookedUp.Value.ToString();
//is it important to return "0" so all expressions keep working even if the variable does not exist
return "0";
}
return varName;
});
}
if (evaluated=="1" || //this check for speed as AsBool() does extra conv and parses as int
evaluated.AsBool()) return true;
return false;
}