Imported Upstream version 4.8.0.309

Former-commit-id: 5f9c6ae75f295e057a7d2971f3a6df4656fa8850

external/cecil-legacy/Mono.Cecil/Modifiers.cs

@@ -0,0 +1,137 @@
+//
+// Modifiers.cs
+//
+// Author:
+//   Jb Evain (jbevain@gmail.com)
+//
+// Copyright (c) 2008 - 2011 Jb Evain
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
+using System;
+
+using MD = Mono.Cecil.Metadata;
+
+namespace Mono.Cecil {
+
+	public interface IModifierType {
+		TypeReference ModifierType { get; }
+		TypeReference ElementType { get; }
+	}
+
+	public sealed class OptionalModifierType : TypeSpecification, IModifierType {
+
+		TypeReference modifier_type;
+
+		public TypeReference ModifierType {
+			get { return modifier_type; }
+			set { modifier_type = value; }
+		}
+
+		public override string Name {
+			get { return base.Name + Suffix; }
+		}
+
+		public override string FullName {
+			get { return base.FullName + Suffix; }
+		}
+
+		string Suffix {
+			get { return " modopt(" + modifier_type + ")"; }
+		}
+
+		public override bool IsValueType {
+			get { return false; }
+			set { throw new InvalidOperationException (); }
+		}
+
+		public override bool IsOptionalModifier {
+			get { return true; }
+		}
+
+		internal override bool ContainsGenericParameter {
+			get { return modifier_type.ContainsGenericParameter || base.ContainsGenericParameter; }
+		}
+
+		public OptionalModifierType (TypeReference modifierType, TypeReference type)
+			: base (type)
+		{
+			Mixin.CheckModifier (modifierType, type);
+			this.modifier_type = modifierType;
+			this.etype = MD.ElementType.CModOpt;
+		}
+	}
+
+	public sealed class RequiredModifierType : TypeSpecification, IModifierType {
+
+		TypeReference modifier_type;
+
+		public TypeReference ModifierType {
+			get { return modifier_type; }
+			set { modifier_type = value; }
+		}
+
+		public override string Name {
+			get { return base.Name + Suffix; }
+		}
+
+		public override string FullName {
+			get { return base.FullName + Suffix; }
+		}
+
+		string Suffix {
+			get { return " modreq(" + modifier_type + ")"; }
+		}
+
+		public override bool IsValueType {
+			get { return false; }
+			set { throw new InvalidOperationException (); }
+		}
+
+		public override bool IsRequiredModifier {
+			get { return true; }
+		}
+
+		internal override bool ContainsGenericParameter {
+			get { return modifier_type.ContainsGenericParameter || base.ContainsGenericParameter; }
+		}
+
+		public RequiredModifierType (TypeReference modifierType, TypeReference type)
+			: base (type)
+		{
+			Mixin.CheckModifier (modifierType, type);
+			this.modifier_type = modifierType;
+			this.etype = MD.ElementType.CModReqD;
+		}
+
+	}
+
+	static partial class Mixin {
+
+		public static void CheckModifier (TypeReference modifierType, TypeReference type)
+		{
+			if (modifierType == null)
+				throw new ArgumentNullException ("modifierType");
+			if (type == null)
+				throw new ArgumentNullException ("type");
+		}
+	}
+}