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

88 lines
3.3 KiB
C#

/*
Copyright (C) 2017 HoLLy
This file is part of dnSpy
dnSpy is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
dnSpy is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with dnSpy. If not, see <http://www.gnu.org/licenses/>.
*/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using dnlib.DotNet;
using dnSpy.Analyzer.Properties;
using dnSpy.Contracts.Decompiler;
using dnSpy.Contracts.Text;
namespace dnSpy.Analyzer.TreeNodes {
sealed class PropertyOverriddenNode : SearchNode {
readonly List<TypeDef> analyzedTypes;
readonly PropertyDef analyzedProperty;
public PropertyOverriddenNode(PropertyDef analyzedProperty) {
this.analyzedProperty = analyzedProperty ?? throw new ArgumentNullException(nameof(analyzedProperty));
analyzedTypes = new List<TypeDef> { analyzedProperty.DeclaringType };
}
protected override void Write(ITextColorWriter output, IDecompiler decompiler) =>
output.Write(BoxedTextColor.Text, dnSpy_Analyzer_Resources.OverridesTreeNode);
protected override IEnumerable<AnalyzerTreeNodeData> FetchChildren(CancellationToken ct) {
AddTypeEquivalentTypes(Context.DocumentService, analyzedTypes[0], analyzedTypes);
foreach (var declType in analyzedTypes) {
var analyzedAccessor = GetVirtualAccessor(analyzedProperty.GetMethod) ?? GetVirtualAccessor(analyzedProperty.SetMethod);
if (analyzedAccessor?.Overrides is IList<MethodOverride> overrides && overrides.Count > 0) {
bool matched = false;
foreach (var o in overrides) {
if (o.MethodDeclaration.ResolveMethodDef() is MethodDef method && (method.IsVirtual || method.IsAbstract)) {
if (method.DeclaringType.Properties.FirstOrDefault(a => (object?)a.GetMethod == method || (object?)a.SetMethod == method) is PropertyDef property) {
matched = true;
yield return new PropertyNode(property) { Context = Context };
}
}
}
if (matched)
yield break;
}
foreach (var property in TypesHierarchyHelpers.FindBaseProperties(analyzedProperty, declType)) {
var anyAccessor = GetVirtualAccessor(property.GetMethod) ?? GetVirtualAccessor(property.SetMethod);
if (anyAccessor is null || !(anyAccessor.IsVirtual || anyAccessor.IsAbstract))
continue;
yield return new PropertyNode(property) { Context = Context };
yield break;
}
}
}
public static bool CanShow(PropertyDef property) =>
(GetAccessor(property.GetMethod) ?? GetAccessor(property.SetMethod)) is not null;
static MethodDef? GetAccessor(MethodDef? accessor) {
if (accessor is not null &&
accessor.DeclaringType.BaseType is not null &&
(accessor.IsVirtual || accessor.IsAbstract) && accessor.IsReuseSlot)
return accessor;
return null;
}
static MethodDef? GetVirtualAccessor(MethodDef? accessor) {
if (accessor is not null && (accessor.IsVirtual || accessor.IsAbstract))
return accessor;
return null;
}
}
}