95 lines
2.7 KiB
C#
95 lines
2.7 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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namespace dnSpy.Debugger.DotNet.Metadata.Impl.COMD {
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sealed class LazyList<T> where T : class {
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readonly Dictionary<uint, T> dict;
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readonly Func<uint, T?> readElementByRID;
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public T? this[uint index] {
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get {
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T? elem;
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if (dict.TryGetValue(index, out elem))
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return elem;
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elem = readElementByRID(index + 1);
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if (elem is not null)
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dict[index] = elem;
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return elem;
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}
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}
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public T? TryGet(uint index) {
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dict.TryGetValue(index, out var elem);
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return elem;
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}
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public LazyList(Func<uint, T?> readElementByRID) {
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this.readElementByRID = readElementByRID;
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dict = new Dictionary<uint, T>();
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}
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}
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sealed class LazyList<TValue, TArg> where TValue : class {
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readonly Dictionary<uint, TValue> dict;
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readonly Func<uint, TArg, TValue?> readElementByRID;
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public TValue? this[uint index, TArg arg] {
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get {
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TValue? elem;
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if (dict.TryGetValue(index, out elem))
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return elem;
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elem = readElementByRID(index + 1, arg);
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if (elem is not null)
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dict[index] = elem;
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return elem;
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}
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}
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public LazyList(Func<uint, TArg, TValue?> readElementByRID) {
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this.readElementByRID = readElementByRID;
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dict = new Dictionary<uint, TValue>();
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}
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}
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sealed class LazyList2<TValue, TArg1, TArg2> where TValue : class {
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readonly Dictionary<uint, TValue> dict;
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readonly Func<uint, TArg1, TArg2, (TValue? elem, bool containedGenericParams)> readElementByRID;
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public TValue? this[uint index, TArg1 arg1, TArg2 arg2] {
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get {
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TValue? elem;
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if (dict.TryGetValue(index, out elem))
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return elem;
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var info = readElementByRID(index + 1, arg1, arg2);
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if ((elem = info.elem) is not null && !info.containedGenericParams)
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dict[index] = elem;
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return elem;
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}
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}
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public LazyList2(Func<uint, TArg1, TArg2, (TValue? elem, bool containedGenericParams)> readElementByRID) {
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this.readElementByRID = readElementByRID;
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dict = new Dictionary<uint, TValue>();
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}
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}
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}
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