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