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455 lines (346 loc) · 11.8 KB
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Runtime.InteropServices.ComTypes;
using System.Threading.Tasks;
using Microsoft.ClearScript.JavaScript;
using Microsoft.ClearScript.Util.COM;
namespace Microsoft.ClearScript.Util
{
/// <exclude/>
[BypassCustomAttributeLoader]
[DefaultScriptUsage(ScriptAccess.Full)]
public interface IScriptableEnumerator : IEnumerator, IDisposable
{
/// <exclude/>
object ScriptableCurrent { get; }
/// <exclude/>
bool ScriptableMoveNext();
/// <exclude/>
void ScriptableDispose();
}
/// <exclude/>
[BypassCustomAttributeLoader]
[DefaultScriptUsage(ScriptAccess.Full)]
public interface IScriptableEnumerator<out T> : IScriptableEnumerator, IEnumerator<T>
{
/// <exclude/>
new T ScriptableCurrent { get; }
}
/// <exclude/>
[BypassCustomAttributeLoader]
[DefaultScriptUsage(ScriptAccess.Full)]
public interface IScriptableAsyncEnumerator<out T> : IAsyncEnumerator<T>
{
/// <exclude/>
T ScriptableCurrent { get; }
/// <exclude/>
object ScriptableMoveNextAsync();
/// <exclude/>
object ScriptableDisposeAsync();
}
internal static class EnumerableHelpers
{
public static IList<T> ToIList<T>(this IEnumerable<T> source)
{
return (source as IList<T>) ?? source.ToList();
}
public static void ForEach<T>(this IEnumerable<T> source, Action<T> action)
{
foreach (var element in source)
{
action(element);
}
}
public static void ForEach<T>(this IEnumerable<T> source, Action<T, int> action)
{
var index = 0;
foreach (var element in source)
{
action(element, index++);
}
}
public static IEnumerable<T> Flatten<T>(this IEnumerable<T> source, Func<T, IEnumerable<T>> selector)
{
foreach (var element in source)
{
yield return element;
foreach (var descendant in selector(element).Flatten(selector))
{
yield return descendant;
}
}
}
public static IEnumerable<T> ToEnumerable<T>(this T element)
{
yield return element;
}
public static IEnumerable<string> ExcludeIndices(this IEnumerable<string> names)
{
foreach (var name in names)
{
if (!int.TryParse(name, NumberStyles.Integer, CultureInfo.InvariantCulture, out _))
{
yield return name;
}
}
}
public static IEnumerable<int> GetIndices(this IEnumerable<string> names)
{
foreach (var name in names)
{
if (int.TryParse(name, NumberStyles.Integer, CultureInfo.InvariantCulture, out var index))
{
yield return index;
}
}
}
}
[BypassCustomAttributeLoader]
[DefaultScriptUsage(ScriptAccess.Full)]
internal static class ScriptableEnumerableHelpers
{
public static readonly HostType HostType = HostType.Wrap(typeof(ScriptableEnumerableHelpers));
public static object GetScriptableEnumerator(IEnumerable source)
{
// ReSharper disable once NotDisposedResource
return HostObject.Wrap(new ScriptableEnumeratorOnEnumerator(source.GetEnumerator()), typeof(IScriptableEnumerator));
}
public static object GetScriptableAsyncEnumerator(IEnumerable source, ScriptEngine engine)
{
// ReSharper disable once NotDisposedResource
return HostItem.Wrap(engine, new ScriptableAsyncEnumeratorOnEnumerator(engine, source.GetEnumerator()), typeof(IScriptableAsyncEnumerator<object>));
}
}
[BypassCustomAttributeLoader]
[DefaultScriptUsage(ScriptAccess.Full)]
internal static class ScriptableEnumerableHelpers<T>
{
public static readonly HostType HostType = HostType.Wrap(typeof(ScriptableEnumerableHelpers<T>));
public static object GetScriptableEnumerator(IEnumerable<T> source)
{
return HostObject.Wrap(new ScriptableEnumeratorOnEnumerator<T>(source.GetEnumerator()), typeof(IScriptableEnumerator<T>));
}
public static object GetScriptableAsyncEnumerator(IEnumerable<T> source, ScriptEngine engine)
{
// ReSharper disable once NotDisposedResource
return HostItem.Wrap(engine, new ScriptableAsyncEnumeratorOnEnumerator<T>(engine, source.GetEnumerator()), typeof(IScriptableAsyncEnumerator<T>));
}
public static object GetScriptableAsyncEnumerator(IAsyncEnumerable<T> source, ScriptEngine engine)
{
// ReSharper disable once NotDisposedResource
return HostItem.Wrap(engine, new ScriptableAsyncEnumeratorOnAsyncEnumerator<T>(engine, source.GetAsyncEnumerator()), typeof(IScriptableAsyncEnumerator<T>));
}
}
internal sealed class ScriptableEnumeratorOnEnumerator : IScriptableEnumerator
{
private readonly IEnumerator enumerator;
public ScriptableEnumeratorOnEnumerator(IEnumerator enumerator)
{
this.enumerator = enumerator;
}
#region IScriptableEnumerator implementation
public object ScriptableCurrent => Current;
public bool ScriptableMoveNext()
{
return MoveNext();
}
public void ScriptableDispose()
{
Dispose();
}
#endregion
#region IEnumerator implementation
public object Current => enumerator.Current;
public bool MoveNext()
{
return enumerator.MoveNext();
}
public void Reset()
{
enumerator.Reset();
}
#endregion
#region IDisposable implementation
public void Dispose()
{
(enumerator as IDisposable)?.Dispose();
}
#endregion
}
internal sealed class ScriptableEnumeratorOnEnumerator<T> : IScriptableEnumerator<T>
{
private readonly IEnumerator<T> enumerator;
public ScriptableEnumeratorOnEnumerator(IEnumerator<T> enumerator)
{
this.enumerator = enumerator;
}
#region IScriptableEnumerator<T> implementation
public T ScriptableCurrent => Current;
#endregion
#region IScriptableEnumerator implementation
object IScriptableEnumerator.ScriptableCurrent => ScriptableCurrent;
public bool ScriptableMoveNext()
{
return MoveNext();
}
public void ScriptableDispose()
{
Dispose();
}
#endregion
#region IEnumerator<T> implementation
public T Current => enumerator.Current;
#endregion
#region IEnumerator implementation
object IEnumerator.Current => Current;
public bool MoveNext()
{
return enumerator.MoveNext();
}
public void Reset()
{
enumerator.Reset();
}
#endregion
#region IDisposable implementation
public void Dispose()
{
enumerator.Dispose();
}
#endregion
}
internal sealed class ScriptableEnumeratorOnEnumVariant : IScriptableEnumerator
{
private readonly IEnumVARIANT enumVariant;
public ScriptableEnumeratorOnEnumVariant(IEnumVARIANT enumVariant)
{
this.enumVariant = enumVariant;
}
#region IScriptableEnumerator implementation
public object ScriptableCurrent => Current;
public bool ScriptableMoveNext()
{
return MoveNext();
}
public void ScriptableDispose()
{
Dispose();
}
#endregion
#region IEnumerator implementation
public object Current { get; private set; }
public bool MoveNext()
{
var items = new object[1];
if (enumVariant.Next(1, items, IntPtr.Zero) == HResult.S_OK)
{
Current = items[0];
return true;
}
return false;
}
public void Reset()
{
enumVariant.Reset();
}
#endregion
#region IDisposable implementation
public void Dispose()
{
}
#endregion
}
internal abstract class ScriptableAsyncEnumerator<T> : IScriptableAsyncEnumerator<T>
{
private readonly ScriptEngine engine;
protected ScriptableAsyncEnumerator(ScriptEngine engine)
{
this.engine = engine;
}
#region IScriptableAsyncEnumerator<T> implementation
public T ScriptableCurrent => Current;
public object ScriptableMoveNextAsync()
{
return MoveNextAsync().ToPromise(engine);
}
public object ScriptableDisposeAsync()
{
return DisposeAsync().ToPromise(engine);
}
#endregion
#region IAsyncEnumerable<T> implementation
public abstract T Current { get; }
public abstract ValueTask<bool> MoveNextAsync();
#endregion
#region IAsyncDisposable implementation
public abstract ValueTask DisposeAsync();
#endregion
}
internal sealed class ScriptableAsyncEnumeratorOnEnumerator : ScriptableAsyncEnumerator<object>
{
private readonly IEnumerator enumerator;
public ScriptableAsyncEnumeratorOnEnumerator(ScriptEngine engine, IEnumerator enumerator)
: base(engine)
{
this.enumerator = enumerator;
}
#region ScriptableAsyncEnumerator<object> overrides
public override object Current => enumerator.Current;
public override ValueTask<bool> MoveNextAsync()
{
return new ValueTask<bool>(enumerator.MoveNext());
}
public override ValueTask DisposeAsync()
{
(enumerator as IDisposable)?.Dispose();
return default;
}
#endregion
}
internal sealed class ScriptableAsyncEnumeratorOnEnumerator<T> : ScriptableAsyncEnumerator<T>
{
private readonly IEnumerator<T> enumerator;
public ScriptableAsyncEnumeratorOnEnumerator(ScriptEngine engine, IEnumerator<T> enumerator)
: base(engine)
{
this.enumerator = enumerator;
}
#region ScriptableAsyncEnumerator<T> overrides
public override T Current => enumerator.Current;
public override ValueTask<bool> MoveNextAsync()
{
return new ValueTask<bool>(enumerator.MoveNext());
}
public override ValueTask DisposeAsync()
{
enumerator.Dispose();
return default;
}
#endregion
}
internal sealed class ScriptableAsyncEnumeratorOnAsyncEnumerator<T> : ScriptableAsyncEnumerator<T>
{
private readonly IAsyncEnumerator<T> enumerator;
public ScriptableAsyncEnumeratorOnAsyncEnumerator(ScriptEngine engine, IAsyncEnumerator<T> enumerator)
: base(engine)
{
this.enumerator = enumerator;
}
#region ScriptableAsyncEnumerator<T> overrides
public override T Current => enumerator.Current;
public override ValueTask<bool> MoveNextAsync()
{
return enumerator.MoveNextAsync();
}
public override ValueTask DisposeAsync()
{
return enumerator.DisposeAsync();
}
#endregion
}
}