Copy .NET 9 attribute sources from dotnet/runtime.

src/PolySharp.SourceGenerators/EmbeddedResources/RuntimeSupported/System.Diagnostics.CodeAnalysis.FeatureGuardAttribute.cs

@@ -0,0 +1,40 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+namespace System.Diagnostics.CodeAnalysis
+{
+    /// <summary>
+    /// Indicates that the specified public static boolean get-only property
+    /// guards access to the specified feature.
+    /// </summary>
+    /// <remarks>
+    /// Analyzers can use this to prevent warnings on calls to code that is
+    /// annotated as requiring that feature, when the callsite is guarded by a
+    /// call to the property.
+    /// </remarks>
+    [AttributeUsage(AttributeTargets.Property, Inherited = false, AllowMultiple = true)]
+#if SYSTEM_PRIVATE_CORELIB
+    public
+#else
+    internal
+#endif
+        sealed class FeatureGuardAttribute : Attribute
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="FeatureGuardAttribute"/> class
+        /// with the specified feature type.
+        /// </summary>
+        /// <param name="featureType">
+        /// The type that represents the feature guarded by the property.
+        /// </param>
+        public FeatureGuardAttribute(Type featureType)
+        {
+            FeatureType = featureType;
+        }
+
+        /// <summary>
+        /// The type that represents the feature guarded by the property.
+        /// </summary>
+        public Type FeatureType { get; }
+    }
+}

src/PolySharp.SourceGenerators/EmbeddedResources/RuntimeSupported/System.Diagnostics.CodeAnalysis.FeatureSwitchDefinitionAttribute.cs

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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+namespace System.Diagnostics.CodeAnalysis
+{
+    /// <summary>
+    /// Indicates that the specified public static boolean get-only property
+    /// corresponds to the feature switch specified by name.
+    /// </summary>
+    /// <remarks>
+    /// IL rewriters and compilers can use this to substitute the return value
+    /// of the specified property with the value of the feature switch.
+    /// </remarks>
+    [AttributeUsage(AttributeTargets.Property, Inherited = false)]
+#if SYSTEM_PRIVATE_CORELIB
+    public
+#else
+    internal
+#endif
+        sealed class FeatureSwitchDefinitionAttribute : Attribute
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="FeatureSwitchDefinitionAttribute"/> class
+        /// with the specified feature switch name.
+        /// </summary>
+        /// <param name="switchName">
+        /// The name of the feature switch that provides the value for the specified property.
+        /// </param>
+        public FeatureSwitchDefinitionAttribute(string switchName)
+        {
+            SwitchName = switchName;
+        }
+
+        /// <summary>
+        /// The name of the feature switch that provides the value for the specified property.
+        /// </summary>
+        public string SwitchName { get; }
+    }
+}

src/PolySharp.SourceGenerators/EmbeddedResources/RuntimeSupported/System.Diagnostics.DebuggerDisableUserUnhandledExceptionsAttribute.cs

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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+namespace System.Diagnostics
+{
+    /// <summary>
+    /// If a .NET Debugger is attached which supports the Debugger.BreakForUserUnhandledException(Exception) API,
+    /// this attribute will prevent the debugger from breaking on user-unhandled exceptions when the
+    /// exception is caught by a method with this attribute, unless BreakForUserUnhandledException is called.
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Method)]
+    public sealed class DebuggerDisableUserUnhandledExceptionsAttribute : Attribute
+    {
+    }
+}

src/PolySharp.SourceGenerators/EmbeddedResources/RuntimeSupported/System.Runtime.InteropServices.WasmImportLinkageAttribute.cs

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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+namespace System.Runtime.InteropServices
+{
+    /// <summary>
+    /// Specifies that the P/Invoke marked with this attribute should be linked in as a WASM import.
+    /// </summary>
+    /// <remarks>
+    /// See https://webassembly.github.io/spec/core/syntax/modules.html#imports.
+    /// </remarks>
+    [AttributeUsage(AttributeTargets.Method, Inherited = false)]
+    public sealed class WasmImportLinkageAttribute : Attribute
+    {
+        /// <summary>
+        /// Instance constructor.
+        /// </summary>
+        public WasmImportLinkageAttribute() { }
+    }
+}

src/PolySharp.SourceGenerators/EmbeddedResources/System.Runtime.CompilerServices.OverloadResolutionPriorityAttribute.cs

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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+namespace System.Runtime.CompilerServices
+{
+    /// <summary>
+    /// Specifies the priority of a member in overload resolution. When unspecified, the default priority is 0.
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Method | AttributeTargets.Constructor | AttributeTargets.Property, AllowMultiple = false, Inherited = false)]
+    public sealed class OverloadResolutionPriorityAttribute : Attribute
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="OverloadResolutionPriorityAttribute"/> class.
+        /// </summary>
+        /// <param name="priority">The priority of the attributed member. Higher numbers are prioritized, lower numbers are deprioritized. 0 is the default if no attribute is present.</param>
+        public OverloadResolutionPriorityAttribute(int priority)
+        {
+            Priority = priority;
+        }
+
+        /// <summary>
+        /// The priority of the member.
+        /// </summary>
+        public int Priority { get; }
+    }
+}

src/PolySharp.SourceGenerators/EmbeddedResources/System.Runtime.CompilerServices.ParamCollectionAttribute.cs

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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+namespace System.Runtime.CompilerServices
+{
+    /// <summary>
+    /// Indicates that a method will allow a variable number of arguments in its invocation.
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Parameter, Inherited = true, AllowMultiple = false)]
+    public sealed class ParamCollectionAttribute : Attribute
+    {
+    }
+}