80 lines
3.0 KiB
C#
80 lines
3.0 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.Diagnostics;
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using dnSpy.Contracts.Debugger;
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using dnSpy.Contracts.Debugger.DotNet.Evaluation;
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using dnSpy.Contracts.Debugger.Evaluation;
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using dnSpy.Debugger.DotNet.Metadata;
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namespace dnSpy.Roslyn.Debugger.ValueNodes {
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static class CSharpDynamicPropertyHelper {
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public static bool IsCSharpDynamicProperty(DmdType type) =>
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type.MetadataNamespace is null &&
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type.MetadataName == "DynamicProperty" &&
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type.DeclaringType is DmdType declType &&
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declType.MetadataNamespace == "Microsoft.CSharp.RuntimeBinder" &&
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declType.MetadataName == "DynamicMetaObjectProviderDebugView" &&
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declType.DeclaringType is null;
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sealed class CSharpDynamicPropertyState {
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public bool Initialized;
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public DmdFieldInfo? NameField;
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public DmdFieldInfo? ValueField;
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}
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public static (string name, DbgDotNetValue value, DmdFieldInfo valueField) GetRealValue(DbgEvaluationInfo evalInfo, DbgDotNetValue propValue) {
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var type = propValue.Type;
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Debug.Assert(IsCSharpDynamicProperty(type));
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var state = type.GetOrCreateData<CSharpDynamicPropertyState>();
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if (!state.Initialized) {
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state.Initialized = true;
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state.NameField = type.GetField(KnownMemberNames.DynamicProperty_Name_FieldName, type.AppDomain.System_String, throwOnError: false);
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state.ValueField = type.GetField(KnownMemberNames.DynamicProperty_Value_FieldName, type.AppDomain.System_Object, throwOnError: false);
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}
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if (state.NameField is null || state.ValueField is null)
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return default;
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DbgDotNetValueResult nameValue = default;
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DbgDotNetValueResult valueValue = default;
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bool error = true;
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try {
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var runtime = evalInfo.Runtime.GetDotNetRuntime();
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nameValue = runtime.LoadField(evalInfo, propValue, state.NameField);
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if (!nameValue.IsNormalResult)
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return default;
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valueValue = runtime.LoadField(evalInfo, propValue, state.ValueField);
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if (!valueValue.IsNormalResult)
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return default;
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var rawValue = nameValue.Value!.GetRawValue();
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if (!rawValue.HasRawValue || rawValue.ValueType != DbgSimpleValueType.StringUtf16 || !(rawValue.RawValue is string realName))
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return default;
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error = false;
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return (realName, valueValue.Value!, state.ValueField);
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}
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finally {
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nameValue.Value?.Dispose();
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if (error)
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valueValue.Value?.Dispose();
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}
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}
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}
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}
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