private void _setFlag(CommandContext context, CompilerFlags flags,
Expression <Func <CompilerFlags, object> > prop, string switchName)
{
Switch s;
if ((s = context.GetSwitch(switchName)) != null)
{
s.AssertValue();
var lambda = prop as LambdaExpression;
var memberExpr = lambda.Body as MemberExpression;
if (memberExpr == null)
{
throw new InvalidOperationException();
}
var propName = memberExpr.Member.Name;
var propInfo = flags.GetType().GetProperty(propName);
if (propInfo.PropertyType == typeof(bool))
{
StatementHelpers.TryParseBooleanFromString(s.Value, out var value);
propInfo.SetValue(flags, value);
}
else
{
propInfo.SetValue(flags, Convert.ChangeType(s.Value, propInfo.PropertyType));
}
}
}
