63 lines
1.8 KiB
C#
63 lines
1.8 KiB
C#
/*
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Copyright (C) 2014-2019 de4dot@gmail.com
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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.Diagnostics;
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using dnSpy.Debugger.DotNet.Metadata;
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namespace dnSpy.Roslyn.Debugger {
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sealed class StateWithKey<T> where T : class {
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readonly object lockObj = new object();
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readonly List<(object key, T data)> list = new List<(object, T)>();
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public static T? TryGet(DmdObject obj, object key) {
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Debug2.Assert(obj is not null);
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Debug2.Assert(key is not null);
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var state = obj.GetOrCreateData<StateWithKey<T>>();
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lock (state.lockObj) {
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var list = state.list;
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for (int i = 0; i < list.Count; i++) {
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var info = list[i];
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if (info.key == key)
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return info.data;
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}
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return null;
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}
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}
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public static T GetOrCreate(DmdObject obj, object key, Func<T> create) {
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Debug2.Assert(obj is not null);
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Debug2.Assert(key is not null);
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var state = obj.GetOrCreateData<StateWithKey<T>>();
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lock (state.lockObj) {
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var list = state.list;
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for (int i = 0; i < list.Count; i++) {
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var info = list[i];
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if (info.key == key)
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return info.data;
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}
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var data = create();
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list.Add((key, data));
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return data;
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}
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}
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}
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}
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