97 lines
4.0 KiB
C#
97 lines
4.0 KiB
C#
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/*
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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.ComponentModel.Composition;
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using System.Diagnostics;
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using System.Diagnostics.CodeAnalysis;
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using System.Linq;
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using dnSpy.Contracts.Debugger.DotNet.Evaluation.Formatters;
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using dnSpy.Contracts.Debugger.DotNet.Evaluation.ValueNodes;
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using dnSpy.Contracts.Debugger.Engine.Evaluation.Internal;
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namespace dnSpy.Debugger.DotNet.Evaluation.Engine {
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abstract class DbgDotNetEngineValueNodeFactoryService {
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public abstract DbgDotNetEngineValueNodeFactory? Create(string languageGuid, DbgDotNetFormatter formatter);
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}
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[Export(typeof(DbgDotNetEngineValueNodeFactoryService))]
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sealed class DbgDotNetEngineValueNodeFactoryServiceImpl : DbgDotNetEngineValueNodeFactoryService {
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readonly IPredefinedEvaluationErrorMessagesHelper errorMessagesHelper;
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readonly Dictionary<Guid, Lazy<DbgDotNetValueNodeFactory, IDbgDotNetValueNodeFactoryMetadata>> toLazyFactory;
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readonly Dictionary<Lazy<DbgDotNetValueNodeFactory, IDbgDotNetValueNodeFactoryMetadata>, DbgDotNetEngineValueNodeFactory> toFactory;
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[ImportingConstructor]
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DbgDotNetEngineValueNodeFactoryServiceImpl(IPredefinedEvaluationErrorMessagesHelper errorMessagesHelper, [ImportMany] IEnumerable<Lazy<DbgDotNetValueNodeFactory, IDbgDotNetValueNodeFactoryMetadata>> factories) {
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this.errorMessagesHelper = errorMessagesHelper;
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toLazyFactory = new Dictionary<Guid, Lazy<DbgDotNetValueNodeFactory, IDbgDotNetValueNodeFactoryMetadata>>();
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toFactory = new Dictionary<Lazy<DbgDotNetValueNodeFactory, IDbgDotNetValueNodeFactoryMetadata>, DbgDotNetEngineValueNodeFactory>();
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foreach (var lz in factories.OrderBy(a => a.Metadata.Order)) {
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bool b = Guid.TryParse(lz.Metadata.LanguageGuid, out var languageGuid);
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Debug.Assert(b);
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if (!b)
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continue;
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if (!toLazyFactory.ContainsKey(languageGuid))
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toLazyFactory.Add(languageGuid, lz);
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}
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}
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public override DbgDotNetEngineValueNodeFactory? Create(string languageGuid, DbgDotNetFormatter formatter) {
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if (languageGuid is null)
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throw new ArgumentNullException(nameof(languageGuid));
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if (formatter is null)
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throw new ArgumentNullException(nameof(formatter));
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bool b = Guid.TryParse(languageGuid, out var guid);
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Debug.Assert(b);
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if (!b)
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return null;
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if (TryGetFactory(guid, formatter, out var factory))
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return factory;
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if (TryGetFactory(LanguageConstants.DefaultLanguageGuid, formatter, out factory))
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return factory;
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Debug.Fail($"Default value node factory ({LanguageConstants.DefaultLanguageGuid.ToString()}) wasn't exported");
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var lz = toLazyFactory.Values.FirstOrDefault();
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if (lz is not null)
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return GetFactory(formatter, lz);
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return null;
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}
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bool TryGetFactory(Guid guid, DbgDotNetFormatter formatter, [NotNullWhen(true)] out DbgDotNetEngineValueNodeFactory? factory) {
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if (!toLazyFactory.TryGetValue(guid, out var lz)) {
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factory = null;
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return false;
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}
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factory = GetFactory(formatter, lz);
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return true;
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}
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DbgDotNetEngineValueNodeFactory GetFactory(DbgDotNetFormatter formatter, Lazy<DbgDotNetValueNodeFactory, IDbgDotNetValueNodeFactoryMetadata> lz) {
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lock (toFactory) {
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if (!toFactory.TryGetValue(lz, out var factory))
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toFactory.Add(lz, factory = new DbgDotNetEngineValueNodeFactoryImpl(formatter, lz.Value, errorMessagesHelper));
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return factory;
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}
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}
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}
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}
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