Dnspy/Extensions/dnSpy.Analyzer/TreeNodes/MethodOverridesNode.cs
2021-09-20 18:20:01 +02:00

63 lines
2.8 KiB
C#

// Copyright (c) 2011 AlphaSierraPapa for the SharpDevelop Team
//
// 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 System.Collections.Generic;
using System.Threading;
using dnlib.DotNet;
using dnSpy.Analyzer.Properties;
using dnSpy.Contracts.Decompiler;
using dnSpy.Contracts.Text;
namespace dnSpy.Analyzer.TreeNodes {
/// <summary>
/// Searches for overrides of the analyzed method.
/// </summary>
sealed class MethodOverridesNode : SearchNode {
readonly MethodDef analyzedMethod;
public MethodOverridesNode(MethodDef analyzedMethod) => this.analyzedMethod = analyzedMethod ?? throw new ArgumentNullException(nameof(analyzedMethod));
protected override void Write(ITextColorWriter output, IDecompiler decompiler) =>
output.Write(BoxedTextColor.Text, dnSpy_Analyzer_Resources.OverriddenByTreeNode);
protected override IEnumerable<AnalyzerTreeNodeData> FetchChildren(CancellationToken ct) {
var analyzer = new ScopedWhereUsedAnalyzer<AnalyzerTreeNodeData>(Context.DocumentService, analyzedMethod, FindReferencesInType);
return analyzer.PerformAnalysis(ct);
}
IEnumerable<AnalyzerTreeNodeData> FindReferencesInType(TypeDef type) {
if (!TypesHierarchyHelpers.IsBaseType(analyzedMethod.DeclaringType, type, resolveTypeArguments: false))
yield break;
foreach (var method in type.Methods) {
if (TypesHierarchyHelpers.IsBaseMethod(analyzedMethod, method)) {
bool hidesParent = !method.IsVirtual ^ method.IsNewSlot;
yield return new MethodNode(method, hidesParent) { Context = Context };
yield break;
}
}
}
public static bool CanShow(MethodDef method) =>
method.IsVirtual &&
!method.IsFinal &&
!method.DeclaringType.IsSealed &&
!method.DeclaringType.IsInterface; // interface methods are definitions not implementations - cannot be overridden
}
}