public static Func <T, int> Hashing <T>(this IHashingExpression <T> hashing)
{
if (hashing == null)
{
throw new NullReferenceException();
}
return(hashing.Expression.Compile());
}
public static IHashingExpression <T> Hash <T, K>(this IHashingExpression <T> expression, Expression <Func <T, K> > selector)
{
if (expression == null)
{
throw new NullReferenceException();
}
if (selector == null)
{
throw new ArgumentNullException("selector");
}
return(new HashingExpressionImpl <T>(HashCore(expression.Expression, expression.Composer, selector, DefaultHashing <K>()), expression.Composer));
}
public static IHashingExpression <T> NullableHash <T, K>(this IHashingExpression <T> expression, Expression <Func <T, K?> > selector, Expression <Func <K, int> > hashing)
where K : struct
{
if (expression == null)
{
throw new NullReferenceException();
}
if (selector == null)
{
throw new ArgumentNullException("selector");
}
if (hashing == null)
{
throw new ArgumentNullException("hashing");
}
return(new HashingExpressionImpl <T>(HashCore(expression.Expression, expression.Composer, selector, NullableHashing <K>(hashing)), expression.Composer));
}
public static IHashingExpression <T> NullableHash <T, K>(this IHashingExpression <T> expression, Expression <Func <T, K?> > selector, IEqualityComparer <K> equalityComparer)
where K : struct
{
if (expression == null)
{
throw new NullReferenceException();
}
if (selector == null)
{
throw new ArgumentNullException("selector");
}
if (equalityComparer == null)
{
throw new ArgumentNullException("equalityComparer");
}
return(new HashingExpressionImpl <T>(HashCore(expression.Expression, expression.Composer, selector, NullableHashing <K>(ComparerHashing <K>(equalityComparer))), expression.Composer));
}
public static IEqualityComparer <T> EqualityComparer <T>(this IEqualityExpression <T> equality, IHashingExpression <T> hashing)
{
if (equality == null)
{
throw new NullReferenceException();
}
if (hashing == null)
{
throw new ArgumentNullException("hashing");
}
return(new CustomEqualityComparer <T>(equality.Expression.Compile(), hashing.Expression.Compile()));
}
