mirror of https://github.com/icsharpcode/ILSpy.git
tom-englert
1 year ago
committed by
tom-englert
10 changed files with 135 additions and 19 deletions
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@@ -0,0 +1,88 @@
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using System; |
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using System.Collections.Generic; |
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using System.Diagnostics.CodeAnalysis; |
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using System.Linq; |
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using Microsoft.VisualStudio.Composition; |
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using TomsToolbox.Composition; |
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using TomsToolbox.Essentials; |
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namespace ICSharpCode.ILSpy; |
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#nullable enable |
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/// <summary>
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/// Adapter for Microsoft.VisualStudio.Composition.<see cref="ExportProvider"/> to <see cref="IExportProvider"/>.
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/// </summary>
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public class ExportProviderAdapter : IExportProvider |
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{ |
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private static readonly Type DefaultMetadataType = typeof(Dictionary<string, object>); |
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private readonly ExportProvider _exportProvider; |
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/// <summary>
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/// Initializes a new instance of the <see cref="ExportProviderAdapter"/> class.
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/// </summary>
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/// <param name="exportProvider">The export provider.</param>
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public ExportProviderAdapter(ExportProvider exportProvider) |
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{ |
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_exportProvider = exportProvider; |
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} |
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event EventHandler<EventArgs>? IExportProvider.ExportsChanged { add { } remove { } } |
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T IExportProvider.GetExportedValue<T>(string? contractName) where T : class |
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{ |
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return _exportProvider.GetExportedValue<T>(contractName) ?? throw new InvalidOperationException($"No export found for type {typeof(T).FullName} with contract '{contractName}'"); |
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} |
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T? IExportProvider.GetExportedValueOrDefault<T>(string? contractName) where T : class |
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{ |
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return _exportProvider.GetExportedValues<T>(contractName).SingleOrDefault(); |
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} |
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#pragma warning disable CS8769 // Nullability of reference types in type of parameter doesn't match implemented member (possibly because of nullability attributes).
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// can't apply NotNullWhen here, because ICSharpCode.Decompiler defines a duplicate attribute, and uses InternalsVisibleTo("ILSpy"), so this attribute is now ambiguous!
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bool IExportProvider.TryGetExportedValue<T>(string? contractName, /*[NotNullWhen(true)]*/ out T? value) where T : class |
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#pragma warning restore CS8769 // Nullability of reference types in type of parameter doesn't match implemented member (possibly because of nullability attributes).
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{ |
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value = _exportProvider.GetExportedValues<T>(contractName).SingleOrDefault(); |
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return !Equals(value, default(T)); |
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} |
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IEnumerable<T> IExportProvider.GetExportedValues<T>(string? contractName) where T : class |
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{ |
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return _exportProvider.GetExportedValues<T>(contractName); |
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} |
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IEnumerable<object> IExportProvider.GetExportedValues(Type contractType, string? contractName) |
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{ |
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return _exportProvider |
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.GetExports(contractType, DefaultMetadataType, contractName) |
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.Select(item => item.Value) |
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.ExceptNullItems(); |
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} |
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IEnumerable<IExport<object>> IExportProvider.GetExports(Type contractType, string? contractName) |
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{ |
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return _exportProvider |
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.GetExports(contractType, DefaultMetadataType, contractName) |
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.Select(item => new ExportAdapter<object>(() => item.Value, new MetadataAdapter((IDictionary<string, object?>)item.Metadata))); |
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} |
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IEnumerable<IExport<T>> IExportProvider.GetExports<T>(string? contractName) where T : class |
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{ |
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return _exportProvider |
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.GetExports(typeof(T), DefaultMetadataType, contractName) |
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.Select(item => new ExportAdapter<T>(() => (T?)item.Value, new MetadataAdapter((IDictionary<string, object?>)item.Metadata))); |
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} |
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IEnumerable<IExport<T, TMetadataView>> IExportProvider.GetExports<T, TMetadataView>(string? contractName) where T : class where TMetadataView : class |
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{ |
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return _exportProvider |
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.GetExports<T, TMetadataView>(contractName) |
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.Select(item => new ExportAdapter<T, TMetadataView>(() => item.Value, item.Metadata)); |
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} |
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} |
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