90 lines
2.9 KiB
C#
90 lines
2.9 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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namespace dnSpy.Contracts.Debugger.DotNet.Evaluation {
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/// <summary>
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/// Return value of methods creating <see cref="DbgDotNetValue"/>s
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/// </summary>
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public readonly struct DbgDotNetValueResult {
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/// <summary>
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/// Gets the value or null if there was an error (<see cref="ErrorMessage"/>).
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/// If <see cref="ValueIsException"/> is true, this is the thrown exception value.
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/// </summary>
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public DbgDotNetValue? Value { get; }
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/// <summary>
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/// true if <see cref="Value"/> contains the thrown exception instead of the expected return value / field value
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/// </summary>
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public bool ValueIsException { get; }
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/// <summary>
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/// Gets the error message or null if there was no error
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/// </summary>
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public string? ErrorMessage { get; }
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/// <summary>
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/// true if there was an error, see <see cref="ErrorMessage"/>
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/// </summary>
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public bool HasError => ErrorMessage is not null;
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/// <summary>
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/// true if there's no error and no exception was thrown
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/// </summary>
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public bool IsNormalResult => !HasError && !ValueIsException;
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/// <summary>
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/// Creates a normal result
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/// </summary>
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/// <param name="value">Value</param>
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/// <returns></returns>
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public static DbgDotNetValueResult Create(DbgDotNetValue value) =>
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new DbgDotNetValueResult(value, valueIsException: false);
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/// <summary>
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/// Creates an exception result
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/// </summary>
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/// <param name="value">Exception value</param>
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/// <returns></returns>
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public static DbgDotNetValueResult CreateException(DbgDotNetValue value) =>
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new DbgDotNetValueResult(value, valueIsException: true);
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/// <summary>
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/// Creates an error result
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/// </summary>
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/// <param name="errorMessage">Error message</param>
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/// <returns></returns>
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public static DbgDotNetValueResult CreateError(string errorMessage) =>
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new DbgDotNetValueResult(errorMessage);
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DbgDotNetValueResult(DbgDotNetValue value, bool valueIsException) {
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Value = value ?? throw new ArgumentNullException(nameof(value));
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ValueIsException = valueIsException;
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ErrorMessage = null;
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}
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DbgDotNetValueResult(string errorMessage) {
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Value = null;
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ValueIsException = false;
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ErrorMessage = errorMessage ?? throw new ArgumentNullException(nameof(errorMessage));
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}
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}
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}
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