internal static GuardThis <int> AgainstNegative(this GuardThis <int> guard)
{
if (guard.Obj < 0)
{
throw new ArgumentException("Value should not be less than zero");
}
return(guard);
}
internal static GuardThis <int> AgainstZero(this GuardThis <int> guard)
{
if (guard.Obj == 0)
{
throw new ArgumentException("Value should not be zero");
}
return(guard);
}
internal static GuardThis <Expression> AgainstNonMemberExpression(this GuardThis <Expression> guard)
{
if (!(guard.Obj is MemberExpression))
{
throw new ArgumentException("Expression expected to be of type 'MemberExpression' but it was not");
}
return(guard);
}
internal static GuardThis <Type> AgainstNonCrmPlusPlusEntity(this GuardThis <Type> guard)
{
if (!typeof(CrmPlusPlusEntity).IsAssignableFrom(guard.Obj))
{
throw new ArgumentException("Type was expected to be CrmPlusPlusEntity but it was not");
}
return(guard);
}
internal static GuardThis <string> AgainstNullOrEmpty(this GuardThis <string> guard, string customErrorMessage = null)
{
if (string.IsNullOrEmpty(guard.Obj))
{
throw new ArgumentException(customErrorMessage != null
? customErrorMessage
: "String was found to be either empty or null when it should have a value");
}
return(guard);
}
internal static GuardThis <string> AgainstSpaces(this GuardThis <string> guard, string customErrorMessage = null)
{
if (guard.Obj.Trim().Contains(" "))
{
throw new ArgumentException(customErrorMessage != null
? customErrorMessage
: "String was found to be contain white space, but white space is not allowed");
}
return(guard);
}