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Issue 20 #51

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Mar 11, 2022
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Apr 2, 2022
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87 changes: 87 additions & 0 deletions src/ValidatableExtensions/ValidatableExtensions.CollectionProperties.cs
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Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
using System.Collections;
using System.Linq.Expressions;

namespace Throw;

Expand Down Expand Up @@ -231,4 +232,90 @@ public static ref readonly Validatable<TValue> IfNotContains<TValue, TElement, T

return ref validatable;
}

/// <summary>
/// Throws an exception if the collection returned from the given <paramref name="func"/> contains the specified element <paramref name="func"/>.
/// Important note: if the collection is a non-evaluated expression, the expression will be evaluated.
/// </summary>
/// <remarks>
/// The default exception thrown is an <see cref="ArgumentException"/>.
/// </remarks>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static ref readonly Validatable<TValue> IfAny<TValue, TCollectionType>(this in Validatable<TValue> validatable, Func<TValue, TCollectionType> func, Expression<Func<TValue, bool>> predicate, [CallerArgumentExpression("func")] string? funcName = null)
where TValue : notnull
where TCollectionType : IEnumerable
{

Validator.ThrowIfContainsElement(func(validatable.Value), predicate,$"{validatable.ParamName}: {funcName}", validatable.ExceptionCustomizations);

return ref validatable;
}

/// <summary>
/// Throws an exception if the collection returned from the given <paramref name="func"/> contains exactly one occurence of the specified element <paramref name="element"/>.
/// Important note: if the collection is a non-evaluated expression, the expression will be evaluated.
/// </summary>
/// <remarks>
/// The default exception thrown is an <see cref="ArgumentException"/>.
/// </remarks>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static ref readonly Validatable<TValue> IfSingle<TValue, TCollectionType>(this in Validatable<TValue> validatable, Func<TValue, TCollectionType> func, dynamic element, [CallerArgumentExpression("func")] string? funcName = null)
where TValue : notnull
where TCollectionType : IEnumerable
{
Validator.ThrowIfContainsSingleElement(func(validatable.Value), element, $"{validatable.ParamName}: {funcName}", validatable.ExceptionCustomizations);

return ref validatable;
}

/// <summary>
/// Throws an exception if the collection returned from the given <paramref name="func"/> contains multiple occurence of the specified element <paramref name="element"/>.
/// Important note: if the collection is a non-evaluated expression, the expression will be evaluated.
/// </summary>
/// <remarks>
/// The default exception thrown is an <see cref="ArgumentException"/>.
/// </remarks>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static ref readonly Validatable<TValue> IfNotSingle<TValue, TCollectionType>(this in Validatable<TValue> validatable, Func<TValue, TCollectionType> func, dynamic element, [CallerArgumentExpression("func")] string? funcName = null)
where TValue : notnull
where TCollectionType : IEnumerable
{
Validator.ThrowIfContainsNoSingleElement(func(validatable.Value), element, $"{validatable.ParamName}: {funcName}", validatable.ExceptionCustomizations);

return ref validatable;
}

/// <summary>
/// Throws an exception if the collection returned from the given <paramref name="func"/> contains no occurence of the specified element <paramref name="element"/>.
/// Important note: if the collection is a non-evaluated expression, the expression will be evaluated.
/// </summary>
/// <remarks>
/// The default exception thrown is an <see cref="ArgumentException"/>.
/// </remarks>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static ref readonly Validatable<TValue> IfNone<TValue, TCollectionType>(this in Validatable<TValue> validatable, Func<TValue, TCollectionType> func, dynamic element, [CallerArgumentExpression("func")] string? funcName = null)
where TValue : notnull
where TCollectionType : IEnumerable
{
Validator.ThrowIfContainsNone(func(validatable.Value), element, $"{validatable.ParamName}: {funcName}", validatable.ExceptionCustomizations);

return ref validatable;
}

/// <summary>
/// Throws an exception if the collection returned from the given <paramref name="func"/> has all items matching the specified element <paramref name="element"/>.
/// Important note: if the collection is a non-evaluated expression, the expression will be evaluated.
/// </summary>
/// <remarks>
/// The default exception thrown is an <see cref="ArgumentException"/>.
/// </remarks>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static ref readonly Validatable<TValue> IfAll<TValue, TCollectionType>(this in Validatable<TValue> validatable, Func<TValue, TCollectionType> func, dynamic element, [CallerArgumentExpression("func")] string? funcName = null)
where TValue : notnull
where TCollectionType : IEnumerable
{
Validator.ThrowIfAll(func(validatable.Value), element, $"{validatable.ParamName}: {funcName}", validatable.ExceptionCustomizations);

return ref validatable;
}
}
80 changes: 80 additions & 0 deletions src/Validators/Validator.Collections.cs
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
namespace Throw;

using System.Collections;
using System.Linq.Expressions;

internal static partial class Validator
{
Expand Down Expand Up @@ -152,4 +153,83 @@ static int GetEnumeratedCount(IEnumerable enumerable)
_ => GetEnumeratedCount(value)
};
}

[MethodImpl(MethodImplOptions.AggressiveInlining)]
internal static void ThrowIfContainsElement<TValue>(TValue value, Expression<Func<TValue, bool>> predicate, string paramName, ExceptionCustomizations? exceptionCustomizations)
where TValue : notnull, IEnumerable
{
foreach (var item in value)
{
if (item)
{
ExceptionThrower.Throw(paramName, exceptionCustomizations, $"Collection should not contain element {element}.");
}
}
}

[MethodImpl(MethodImplOptions.AggressiveInlining)]
internal static void ThrowIfContainsSingleElement<TValue>(TValue value, dynamic element, string paramName, ExceptionCustomizations? exceptionCustomizations)
where TValue : notnull, IEnumerable
{
var count = 0;
foreach (var item in value)
{
if (item == element)
{
count++;
if (count > 1) break;
}
}
if (count == 1) ExceptionThrower.Throw(paramName, exceptionCustomizations, $"Collection should not contain a single element having value of {element}.");
}


[MethodImpl(MethodImplOptions.AggressiveInlining)]
internal static void ThrowIfContainsNoSingleElement<TValue>(TValue value, dynamic element, string paramName, ExceptionCustomizations? exceptionCustomizations)
where TValue : notnull, IEnumerable
{
var count = 0;
foreach (var item in value)
{
if (item == element)
{
count++;
if (count > 1) break;
}
}
if (count > 1) ExceptionThrower.Throw(paramName, exceptionCustomizations, $"Collection should not contain multiple occurences of element having value of {element}.");
}

[MethodImpl(MethodImplOptions.AggressiveInlining)]
internal static void ThrowIfContainsNone<TValue>(TValue value, dynamic element, string paramName, ExceptionCustomizations? exceptionCustomizations)
where TValue : notnull, IEnumerable
{
var count = 0;
foreach (var item in value)
{
if (item == element)
{
count++;
if (count > 0) break;
}
}
if (count > 0) ExceptionThrower.Throw(paramName, exceptionCustomizations, $"Collection should contain at least one occurences of element having value of {element}.");
}

[MethodImpl(MethodImplOptions.AggressiveInlining)]
internal static void ThrowIfAll<TValue>(TValue value, dynamic element, string paramName, ExceptionCustomizations? exceptionCustomizations)
where TValue : notnull, IEnumerable
{
bool notAll = false;
foreach (var item in value)
{
if (item != element)
{
notAll = true;
if (notAll) break;
}
}
if (!notAll) ExceptionThrower.Throw(paramName, exceptionCustomizations, $"Collection should contain at least one occurences of an element not of the same value as the element {element}.");
}

}