53 lines
2 KiB
C#
53 lines
2 KiB
C#
using System.Diagnostics.CodeAnalysis;
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namespace Examples;
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/// <summary>
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/// Discovers every <see cref="IExample"/> implementation in this assembly via reflection:
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/// <see cref="DesktopExamples"/> (Program.cs) is all of them, <see cref="BrowserExamples"/>
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/// (Web/Host.cs) is everything not marked <see cref="ExcludeFromBrowserAttribute"/>.
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/// Ordering is by category (browser dropdown grouping), then display name.
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/// </summary>
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public static class ExampleRegistry
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{
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/// <summary>Category order used for the browser dropdown and desktop run-all sequence.</summary>
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private static readonly string[] CategoryOrder =
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[
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"Core",
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"Shapes",
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"Models",
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"Textures",
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"Text",
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"Audio",
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"Shaders",
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];
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private static readonly IExample[] AllExamples = DiscoverAll();
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public static readonly IExample[] DesktopExamples = AllExamples;
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public static readonly IExample[] BrowserExamples =
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Array.FindAll(AllExamples, e => !e.GetType().IsDefined(typeof(ExcludeFromBrowserAttribute), inherit: false));
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[UnconditionalSuppressMessage("Trimming", "IL2026",
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Justification = "The Examples assembly is rooted via TrimmerRootAssembly in Examples.csproj.")]
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[UnconditionalSuppressMessage("Trimming", "IL2067",
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Justification = "Same as IL2026: all example types and their parameterless constructors are rooted.")]
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private static IExample[] DiscoverAll()
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{
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return typeof(IExample).Assembly
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.GetTypes()
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.Where(t => typeof(IExample).IsAssignableFrom(t) && t.IsClass && !t.IsAbstract)
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.Select(t => (IExample)Activator.CreateInstance(t))
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.OrderBy(e => Array.IndexOf(CategoryOrder, Category(e)))
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.ThenBy(e => e.Name, StringComparer.OrdinalIgnoreCase)
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.ToArray();
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}
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// "Examples.Core" -> "Core"
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private static string Category(IExample example)
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{
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var ns = example.GetType().Namespace ?? "";
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return ns[(ns.LastIndexOf('.') + 1)..];
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}
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}
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