mirror of https://github.com/icsharpcode/ILSpy.git
Daniel Grunwald
7 years ago
22 changed files with 223 additions and 277 deletions
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// Copyright (c) 2014 Daniel Grunwald
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of this
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// software and associated documentation files (the "Software"), to deal in the Software
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// without restriction, including without limitation the rights to use, copy, modify, merge,
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// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
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// to whom the Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all copies or
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// substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
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// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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using System; |
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using System.Collections.Immutable; |
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using System.Reflection.Metadata; |
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using ICSharpCode.Decompiler.Metadata; |
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namespace ICSharpCode.Decompiler.TypeSystem |
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{ |
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/// <summary>
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/// Decompiler type system for generic types or methods:
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/// used to replace the dummy type parameters by the actual type parameters of the method being decompiled.
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/// </summary>
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public class SpecializingDecompilerTypeSystem : IDecompilerTypeSystem |
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{ |
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readonly IDecompilerTypeSystem context; |
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readonly TypeParameterSubstitution substitution; |
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public SpecializingDecompilerTypeSystem(IDecompilerTypeSystem context, TypeParameterSubstitution substitution) |
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{ |
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if (context == null) |
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throw new ArgumentNullException(nameof(context)); |
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if (substitution == null) |
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throw new ArgumentNullException(nameof(substitution)); |
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this.context = context; |
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this.substitution = substitution; |
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} |
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internal IDecompilerTypeSystem Context { |
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get { return context; } |
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} |
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public ICompilation Compilation { |
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get { return context.Compilation; } |
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} |
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public Metadata.PEFile ModuleDefinition => context.ModuleDefinition; |
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public MetadataModule MainModule => context.MainModule; |
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public TypeParameterSubstitution Substitution { |
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get { return substitution; } |
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} |
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public IType ResolveAsType(EntityHandle typeReference) |
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{ |
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return context.ResolveAsType(typeReference).AcceptVisitor(substitution); |
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} |
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public IField ResolveAsField(EntityHandle fieldReference) |
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{ |
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IField field = context.ResolveAsField(fieldReference); |
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if (field != null) |
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field = (IField)field.Specialize(substitution); |
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return field; |
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} |
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public IMethod ResolveAsMethod(EntityHandle methodReference) |
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{ |
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IMethod method = context.ResolveAsMethod(methodReference); |
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if (method != null) |
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method = (IMethod)method.Specialize(substitution); |
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return method; |
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} |
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public IDecompilerTypeSystem GetSpecializingTypeSystem(TypeParameterSubstitution newSubstitution) |
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{ |
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//return context.GetSpecializingTypeSystem(TypeParameterSubstitution.Compose(newSubstitution, this.substitution));
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// Because the input new substitution is taken from IMember.Substitution for some member that
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// was resolved by this type system, it already contains 'this.substitution'.
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return context.GetSpecializingTypeSystem(newSubstitution); |
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} |
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public MetadataReader GetMetadata() |
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{ |
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return context.GetMetadata(); |
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} |
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public IMember ResolveAsMember(EntityHandle memberReference) |
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{ |
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IMember member = context.ResolveAsMember(memberReference); |
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if (member != null) |
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member = member.Specialize(substitution); |
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return member; |
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} |
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MethodSignature<IType> IDecompilerTypeSystem.DecodeMethodSignature(StandaloneSignatureHandle standaloneSignatureHandle) |
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{ |
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var sig = context.DecodeMethodSignature(standaloneSignatureHandle); |
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return new MethodSignature<IType>( |
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sig.Header, |
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sig.ReturnType.AcceptVisitor(substitution), |
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sig.RequiredParameterCount, |
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sig.GenericParameterCount, |
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ImmutableArray.CreateRange( |
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sig.ParameterTypes, t => t.AcceptVisitor(substitution) |
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) |
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); |
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} |
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ImmutableArray<IType> IDecompilerTypeSystem.DecodeLocalSignature(StandaloneSignatureHandle standaloneSignatureHandle) |
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{ |
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var sig = context.DecodeLocalSignature(standaloneSignatureHandle); |
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return ImmutableArray.CreateRange( |
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sig, t => t.AcceptVisitor(substitution) |
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); |
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} |
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} |
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} |
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