108 lines
4.7 KiB
C#
108 lines
4.7 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.ObjectModel;
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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.DotNet.Evaluation.ValueNodes;
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using dnSpy.Contracts.Debugger.DotNet.Text;
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using dnSpy.Contracts.Debugger.Engine.Evaluation;
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using dnSpy.Contracts.Debugger.Evaluation;
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using dnSpy.Contracts.Debugger.Text;
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using dnSpy.Debugger.DotNet.Metadata;
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namespace dnSpy.Roslyn.Debugger.ValueNodes {
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sealed class StaticMembersValueNodeProvider : MembersValueNodeProvider {
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public override string ImageName => PredefinedDbgValueNodeImageNames.StaticMembers;
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readonly DbgDotNetValueNodeProviderFactory valueNodeProviderFactory;
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public StaticMembersValueNodeProvider(DbgDotNetValueNodeProviderFactory valueNodeProviderFactory, LanguageValueNodeFactory valueNodeFactory, DbgDotNetText name, string expression, MemberValueNodeInfoCollection membersCollection, DbgValueNodeEvaluationOptions evalOptions)
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: base(valueNodeFactory, name, expression, membersCollection, evalOptions) {
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this.valueNodeProviderFactory = valueNodeProviderFactory;
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}
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string GetExpression(DmdType declaringType) {
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var sb = ObjectCache.AllocStringBuilder();
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var output = new DbgStringBuilderTextWriter(sb);
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valueNodeProviderFactory.FormatTypeName2(output, declaringType);
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return ObjectCache.FreeAndToString(ref sb);
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}
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protected override (DbgDotNetValueNode node, bool canHide) CreateValueNode(DbgEvaluationInfo evalInfo, int index, DbgValueNodeEvaluationOptions options, ReadOnlyCollection<string>? formatSpecifiers) {
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var runtime = evalInfo.Runtime.GetDotNetRuntime();
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DbgDotNetValueResult valueResult = default;
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try {
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ref var info = ref membersCollection.Members[index];
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var typeExpression = GetExpression(info.Member.DeclaringType!);
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string expression, imageName;
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bool isReadOnly;
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DmdType expectedType;
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switch (info.Member.MemberType) {
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case DmdMemberTypes.Field:
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var field = (DmdFieldInfo)info.Member;
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expression = valueNodeFactory.GetFieldExpression(typeExpression, field.Name, null, addParens: false);
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expectedType = field.FieldType;
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imageName = ImageNameUtils.GetImageName(field);
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valueResult = runtime.LoadField(evalInfo, null, field);
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// We should be able to change read only fields (we're a debugger), but since the
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// compiler will complain, we have to prevent the user from editing the value.
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isReadOnly = field.IsLiteral || field.IsInitOnly;
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break;
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case DmdMemberTypes.Property:
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var property = (DmdPropertyInfo)info.Member;
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expression = valueNodeFactory.GetPropertyExpression(typeExpression, property.Name, null, addParens: false);
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expectedType = property.PropertyType;
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imageName = ImageNameUtils.GetImageName(property);
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if ((options & DbgValueNodeEvaluationOptions.NoFuncEval) != 0) {
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isReadOnly = true;
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valueResult = DbgDotNetValueResult.CreateError(PredefinedEvaluationErrorMessages.FuncEvalDisabled);
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}
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else {
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var getter = property.GetGetMethod(DmdGetAccessorOptions.All) ?? throw new InvalidOperationException();
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valueResult = runtime.Call(evalInfo, null, getter, Array.Empty<object>(), DbgDotNetInvokeOptions.None);
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isReadOnly = property.GetSetMethod(DmdGetAccessorOptions.All) is null;
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}
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break;
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default:
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throw new InvalidOperationException();
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}
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DbgDotNetValueNode newNode;
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if (valueResult.HasError)
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newNode = valueNodeFactory.CreateError(evalInfo, info.Name, valueResult.ErrorMessage!, expression, false);
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else if (valueResult.ValueIsException)
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newNode = valueNodeFactory.Create(evalInfo, info.Name, valueResult.Value!, formatSpecifiers, options, expression, PredefinedDbgValueNodeImageNames.Error, true, false, expectedType, false);
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else
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newNode = valueNodeFactory.Create(evalInfo, info.Name, valueResult.Value!, formatSpecifiers, options, expression, imageName, isReadOnly, false, expectedType, false);
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valueResult = default;
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return (newNode, true);
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}
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catch {
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valueResult.Value?.Dispose();
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throw;
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}
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}
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}
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}
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