added Ensure extensions generator

Railway/Ensure.cs

@@ -1,13 +1,12 @@
 namespace Just.Railway;
 
-public static class Ensure
+public static partial class Ensure
 {
     public delegate Error ErrorFactory(string valueExpression);
 
     public const string DefaultErrorType = "EnsureFailed";
 
     [Pure] public static Ensure<T> That<T>(T value, [CallerArgumentExpression(nameof(value))]string valueExpression = "") => new(value, valueExpression);
-    [Pure] public static async Task<Ensure<T>> That<T>(Task<T> value, [CallerArgumentExpression(nameof(value))]string valueExpression = "") => new(await value.ConfigureAwait(false), valueExpression);
 
     [Pure] public static Result<T> Result<T>(this in Ensure<T> ensure) => ensure.State switch
     {
@@ -15,8 +14,7 @@ public static class Ensure
         ResultState.Error => new(ensure.Error!),
         _ => throw new EnsureNotInitializedException(nameof(ensure))
     };
-    [Pure]
-    public static async Task<Result<T>> Result<T>(this Task<Ensure<T>> ensureTask)
+    [Pure] public static async Task<Result<T>> Result<T>(this Task<Ensure<T>> ensureTask)
     {
         var ensure = await ensureTask.ConfigureAwait(false);
         return ensure.State switch
@@ -26,261 +24,18 @@ public static class Ensure
             _ => throw new EnsureNotInitializedException(nameof(ensureTask))
         };
     }
-    [Pure]
-    public static Ensure<T> Satisfies<T>(this in Ensure<T> ensure, Func<T, bool> requirement, Error error = default!)
-    {
-        return ensure.State switch
-        {
-            ResultState.Success => requirement(ensure.Value)
-                ? new(ensure.Value, ensure.ValueExpression)
-                : new(error ?? Error.New(DefaultErrorType, $"Value {{{ensure.ValueExpression}}} does not satisfy the requirement."), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensure))
-        };
-    }
-    [Pure]
-    public static Ensure<T> Satisfies<T>(this in Ensure<T> ensure, Func<T, bool> requirement, ErrorFactory errorFactory)
-    {
-        return ensure.State switch
-        {
-            ResultState.Success => requirement(ensure.Value)
-                ? new(ensure.Value, ensure.ValueExpression)
-                : new(errorFactory(ensure.ValueExpression), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensure))
-        };
-    }
-    [Pure]
-    public static async Task<Ensure<T>> Satisfies<T>(this Task<Ensure<T>> ensureTask, Func<T, bool> requirement, Error error = default!)
+    [Pure] public static async ValueTask<Result<T>> Result<T>(this ValueTask<Ensure<T>> ensureTask)
     {
         var ensure = await ensureTask.ConfigureAwait(false);
         return ensure.State switch
         {
-            ResultState.Success => requirement(ensure.Value)
-                ? new(ensure.Value, ensure.ValueExpression)
-                : new(error ?? Error.New(DefaultErrorType, $"Value {{{ensure.ValueExpression}}} does not satisfy the requirement."), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensureTask))
-        };
-    }
-    [Pure]
-    public static async Task<Ensure<T>> Satisfies<T>(this Task<Ensure<T>> ensureTask, Func<T, bool> requirement, ErrorFactory errorFactory)
-    {
-        var ensure = await ensureTask.ConfigureAwait(false);
-        return ensure.State switch
-        {
-            ResultState.Success => requirement(ensure.Value)
-                ? new(ensure.Value, ensure.ValueExpression)
-                : new(errorFactory(ensure.ValueExpression), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensureTask))
-        };
-    }
-    [Pure]
-    public static async Task<Ensure<T>> Satisfies<T>(this Ensure<T> ensure, Func<T, Task<bool>> requirement, Error error = default!)
-    {
-        return ensure.State switch
-        {
-            ResultState.Success => await requirement(ensure.Value).ConfigureAwait(false)
-                ? new(ensure.Value, ensure.ValueExpression)
-                : new(error ?? Error.New(DefaultErrorType, $"Value {{{ensure.ValueExpression}}} does not satisfy the requirement."), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensure))
-        };
-    }
-    [Pure]
-    public static async Task<Ensure<T>> Satisfies<T>(this Ensure<T> ensure, Func<T, Task<bool>> requirement, ErrorFactory errorFactory)
-    {
-        return ensure.State switch
-        {
-            ResultState.Success => await requirement(ensure.Value).ConfigureAwait(false)
-                ? new(ensure.Value, ensure.ValueExpression)
-                : new(errorFactory(ensure.ValueExpression), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensure))
-        };
-    }
-    [Pure]
-    public static async Task<Ensure<T>> Satisfies<T>(this Task<Ensure<T>> ensureTask, Func<T, Task<bool>> requirement, Error error = default!)
-    {
-        var ensure = await ensureTask.ConfigureAwait(false);
-        return ensure.State switch
-        {
-            ResultState.Success => await requirement(ensure.Value).ConfigureAwait(false)
-                ? new(ensure.Value, ensure.ValueExpression)
-                : new(error ?? Error.New(DefaultErrorType, $"Value {{{ensure.ValueExpression}}} does not satisfy the requirement."), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensureTask))
-        };
-    }
-    [Pure]
-    public static async Task<Ensure<T>> Satisfies<T>(this Task<Ensure<T>> ensureTask, Func<T, Task<bool>> requirement, ErrorFactory errorFactory)
-    {
-        var ensure = await ensureTask.ConfigureAwait(false);
-        return ensure.State switch
-        {
-            ResultState.Success => await requirement(ensure.Value).ConfigureAwait(false)
-                ? new(ensure.Value, ensure.ValueExpression)
-                : new(errorFactory(ensure.ValueExpression), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
+            ResultState.Success => new(ensure.Value),
+            ResultState.Error => new(ensure.Error!),
             _ => throw new EnsureNotInitializedException(nameof(ensureTask))
         };
     }
 
-    [Pure]
-    public static Ensure<T> NotNull<T>(this in Ensure<T?> ensure, Error error = default!)
-        where T : struct
-    {
-        return ensure.State switch
-        {
-            ResultState.Success => ensure.Value.HasValue
-                ? new(ensure.Value.Value, ensure.ValueExpression)
-                : new(error ?? Error.New(DefaultErrorType, $"Value {{{ensure.ValueExpression}}} is null."), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensure))
-        };
-    }
-    [Pure]
-    public static async Task<Ensure<T>> NotNull<T>(this Task<Ensure<T?>> ensureTask, Error error = default!)
-        where T : struct
-    {
-        var ensure = await ensureTask.ConfigureAwait(false);
-        return ensure.State switch
-        {
-            ResultState.Success => ensure.Value.HasValue
-                ? new(ensure.Value.Value, ensure.ValueExpression)
-                : new(error ?? Error.New(DefaultErrorType, $"Value {{{ensure.ValueExpression}}} is null."), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensureTask))
-        };
-    }
-    [Pure]
-    public static Ensure<T> NotNull<T>(this in Ensure<T?> ensure, Error error = default!)
-        where T : notnull
-    {
-        return ensure.State switch
-        {
-            ResultState.Success => ensure.Value is not null
-                ? new(ensure.Value, ensure.ValueExpression)
-                : new(error ?? Error.New(DefaultErrorType, $"Value {{{ensure.ValueExpression}}} is null."), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensure))
-        };
-    }
-    [Pure]
-    public static async Task<Ensure<T>> NotNull<T>(this Task<Ensure<T?>> ensureTask, Error error = default!)
-        where T : notnull
-    {
-        var ensure = await ensureTask.ConfigureAwait(false);
-        return ensure.State switch
-        {
-            ResultState.Success => ensure.Value is not null
-                ? new(ensure.Value, ensure.ValueExpression)
-                : new(error ?? Error.New(DefaultErrorType, $"Value {{{ensure.ValueExpression}}} is null."), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensureTask))
-        };
-    }
-
-    [Pure]
-    public static Ensure<T[]> NotEmpty<T>(this in Ensure<T[]> ensure, Error error = default!)
-    {
-        return ensure.State switch
-        {
-            ResultState.Success => ensure.Value is not null && ensure.Value.Length > 0
-                ? new(ensure.Value, ensure.ValueExpression)
-                : new(error ?? Error.New(DefaultErrorType, $"Value {{{ensure.ValueExpression}}} is empty."), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensure))
-        };
-    }
-    [Pure]
-    public static Ensure<List<T>> NotEmpty<T>(this in Ensure<List<T>> ensure, Error error = default!)
-    {
-        return ensure.State switch
-        {
-            ResultState.Success => ensure.Value is not null && ensure.Value.Count > 0
-                ? new(ensure.Value, ensure.ValueExpression)
-                : new(error ?? Error.New(DefaultErrorType, $"Value {{{ensure.ValueExpression}}} is empty."), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensure))
-        };
-    }
-    [Pure]
-    public static Ensure<IReadOnlyCollection<T>> NotEmpty<T>(this in Ensure<IReadOnlyCollection<T>> ensure, Error error = default!)
-    {
-        return ensure.State switch
-        {
-            ResultState.Success => ensure.Value is not null && ensure.Value.Count > 0
-                ? new(ensure.Value, ensure.ValueExpression)
-                : new(error ?? Error.New(DefaultErrorType, $"Value {{{ensure.ValueExpression}}} is empty."), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensure))
-        };
-    }
-    [Pure]
-    public static Ensure<ICollection<T>> NotEmpty<T>(this in Ensure<ICollection<T>> ensure, Error error = default!)
-    {
-        return ensure.State switch
-        {
-            ResultState.Success => ensure.Value is not null && ensure.Value.Count > 0
-                ? new(ensure.Value, ensure.ValueExpression)
-                : new(error ?? Error.New(DefaultErrorType, $"Value {{{ensure.ValueExpression}}} is empty."), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensure))
-        };
-    }
-    [Pure]
-    public static Ensure<IReadOnlyList<T>> NotEmpty<T>(this in Ensure<IReadOnlyList<T>> ensure, Error error = default!)
-    {
-        return ensure.State switch
-        {
-            ResultState.Success => ensure.Value is not null && ensure.Value.Count > 0
-                ? new(ensure.Value, ensure.ValueExpression)
-                : new(error ?? Error.New(DefaultErrorType, $"Value {{{ensure.ValueExpression}}} is empty."), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensure))
-        };
-    }
-    [Pure]
-    public static Ensure<IList<T>> NotEmpty<T>(this in Ensure<IList<T>> ensure, Error error = default!)
-    {
-        return ensure.State switch
-        {
-            ResultState.Success => ensure.Value is not null && ensure.Value.Count > 0
-                ? new(ensure.Value, ensure.ValueExpression)
-                : new(error ?? Error.New(DefaultErrorType, $"Value {{{ensure.ValueExpression}}} is empty."), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensure))
-        };
-    }
-    [Pure]
-    public static Ensure<IEnumerable<T>> NotEmpty<T>(this in Ensure<IEnumerable<T>> ensure, Error error = default!)
-    {
-        return ensure.State switch
-        {
-            ResultState.Success => ensure.Value is not null && ensure.Value.Any()
-                ? new(ensure.Value, ensure.ValueExpression)
-                : new(error ?? Error.New(DefaultErrorType, $"Value {{{ensure.ValueExpression}}} is empty."), ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensure))
-        };
-    }
-    [Pure]
-    public static Ensure<string> NotEmpty(this in Ensure<string> ensure, Error error = default!)
-    {
-        return ensure.State switch
-        {
-            ResultState.Success => string.IsNullOrEmpty(ensure.Value)
-                ? new(error ?? Error.New(DefaultErrorType, $"Value {{{ensure.ValueExpression}}} is empty."), ensure.ValueExpression)
-                : new(ensure.Value, ensure.ValueExpression),
-            ResultState.Error => new(ensure.Error!, ensure.ValueExpression),
-            _ => throw new EnsureNotInitializedException(nameof(ensure))
-        };
-    }
-
-    [Pure]
-    public static Ensure<string> NotWhitespace(this in Ensure<string> ensure, Error error = default!)
+    [Pure] public static Ensure<string> NotWhitespace(this in Ensure<string> ensure, Error error = default!)
     {
         return ensure.State switch
         {