public static IsCondition <T> EqualTo <T>(this IsCondition <T> condition, T compare)
{
var parameter = Expression.Parameter(typeof(T), "x");
var body = Expression.Equal(parameter, Expression.Convert(Expression.Constant(compare), typeof(T)));
var lamdba = Expression.Lambda <Func <T, bool> >(body, parameter);
return(condition.Check <ArgumentException>(lamdba));
}
public static IsCondition <T> NotNull <T>(this IsCondition <T> condition)
{
var parameter = Expression.Parameter(typeof(T), "x");
var body = Expression.NotEqual(parameter, Expression.Constant(null));
var lamdba = Expression.Lambda <Func <T, bool> >(body, parameter);
return(condition.Check <NullReferenceException>(lamdba));
}
public static IsCondition <T> InRange <T>(this IsCondition <T> condition, T min, T max)
{
var parameter = Expression.Parameter(typeof(T), "x");
var left = Expression.GreaterThanOrEqual(parameter, Expression.Convert(Expression.Constant(min), typeof(T)));
var right = Expression.LessThanOrEqual(parameter, Expression.Convert(Expression.Constant(max), typeof(T)));
var body = Expression.AndAlso(left, right);
var lamdba = Expression.Lambda <Func <T, bool> >(body, parameter);
return(condition.Check <ArgumentOutOfRangeException>(lamdba));
}
public static IsCondition <string> NotNullOrWhiteSpace(this IsCondition <string> condition)
{
return(condition.Check(x => !string.IsNullOrWhiteSpace(x)));
}