127 lines
3.4 KiB
C#
127 lines
3.4 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 dnSpy.Contracts.Debugger.DotNet.Evaluation;
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using dnSpy.Debugger.DotNet.Metadata;
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namespace dnSpy.Debugger.DotNet.Mono.Impl.Evaluation.Hooks {
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sealed class MonoDebugValueConverterImpl : IMonoDebugValueConverter {
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readonly DbgMonoDebugInternalRuntimeImpl runtime;
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public MonoDebugValueConverterImpl(DbgMonoDebugInternalRuntimeImpl runtime) =>
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this.runtime = runtime ?? throw new ArgumentNullException(nameof(runtime));
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bool TryGetUInt32(object? value, out uint result) {
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if (value is DbgDotNetValue dnValue) {
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var rawValue = dnValue.GetRawValue();
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if (rawValue.HasRawValue)
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value = rawValue.RawValue;
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}
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if (value is not null) {
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if (value is bool) {
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result = (bool)value ? 1U : 0;
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return true;
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}
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if (value is char) {
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result = (char)value;
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return true;
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}
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if (value is byte) {
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result = (byte)value;
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return true;
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}
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if (value is sbyte) {
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result = (uint)(sbyte)value;
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return true;
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}
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if (value is short) {
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result = (uint)(short)value;
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return true;
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}
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if (value is ushort) {
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result = (ushort)value;
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return true;
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}
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if (value is int) {
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result = (uint)(int)value;
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return true;
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}
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if (value is uint) {
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result = (uint)value;
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return true;
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}
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}
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result = 0;
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return false;
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}
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Exception Invalid() => new InvalidOperationException();
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char IMonoDebugValueConverter.ToChar(object? value) {
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if (TryGetUInt32(value, out var result))
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return (char)result;
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throw Invalid();
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}
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int IMonoDebugValueConverter.ToInt32(object? value) {
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if (TryGetUInt32(value, out var result))
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return (int)result;
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throw Invalid();
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}
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unsafe char[]? IMonoDebugValueConverter.ToCharArray(object? value) {
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if (value is null)
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return null;
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if (value is char[] result)
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return result;
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if (value is DbgDotNetValue dnValue) {
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// Don't check its type, it's null and can be cast to char[]
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if (dnValue.IsNull)
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return null;
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var type = dnValue.Type;
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if (type.IsArray && type.GetElementType() == type.AppDomain.System_Char) {
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var addr = dnValue.GetRawAddressValue(onlyDataAddress: true);
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if (addr is not null) {
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ulong chars = addr.Value.Length / 2;
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if (chars <= int.MaxValue / 2) {
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if (chars == 0)
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return Array.Empty<char>();
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try {
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result = new char[(int)chars];
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}
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catch (OutOfMemoryException) {
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throw Invalid();
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}
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var process = type.AppDomain.Runtime.GetDebuggerRuntime().Process;
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fixed (void* p = result)
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process.ReadMemory(addr.Value.Address, (byte*)p, (int)chars * 2);
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return result;
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}
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}
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}
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}
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throw Invalid();
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}
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}
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}
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