Upstream icsharpcode/ILSpy state of the touched files before 53822318d9
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// Copyright (c) 2018 Daniel Grunwald
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of this
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// software and associated documentation files (the "Software"), to deal in the Software
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// without restriction, including without limitation the rights to use, copy, modify, merge,
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// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
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// to whom the Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all copies or
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// substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
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// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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using System;
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using System.Collections;
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using System.Collections.Generic;
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namespace ICSharpCode.Decompiler.Tests.TestCases.Pretty
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{
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internal class NullPropagation
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{
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private class MyClass
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{
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public int IntVal;
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public readonly int ReadonlyIntVal;
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public MyStruct StructField;
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public readonly MyStruct ReadonlyStructField;
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public string Text;
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public MyClass Field;
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public MyClass Property { get; set; }
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public MyClass this[int index] => null;
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public MyClass Method(int arg)
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{
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return null;
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}
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public bool GetBool()
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{
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return false;
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}
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public void Done()
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{
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}
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}
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private struct MyStruct
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{
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public int IntVal;
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public readonly int ReadonlyIntVal;
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public MyClass Field;
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public MyStruct? Property1 => null;
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#if CS71
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public MyStruct Property2 => default;
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#else
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public MyStruct Property2 => default(MyStruct);
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#endif
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public MyStruct? this[int index] => null;
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public MyStruct? Method1(int arg)
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{
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return null;
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}
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public MyStruct Method2(int arg)
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{
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#if CS71
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return default;
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#else
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return default(MyStruct);
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#endif
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}
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public bool GetBool()
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{
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return false;
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}
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public void Done()
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{
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}
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}
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private class Container<T1, T2>
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{
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public GenericStruct<T1, T2> Other;
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}
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private struct GenericStruct<T1, T2>
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{
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public T1 Field1;
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public T2 Field2;
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public Container<T1, T2> Other;
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public override string ToString()
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{
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return "(" + Field1?.ToString() + ", " + Field2?.ToString() + ")";
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}
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public int? GetTextLength()
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{
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return Field1?.ToString().Length + Field2?.ToString().Length + 4;
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}
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public string Chain1()
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{
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return Other?.Other.Other?.Other.Field1?.ToString();
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}
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public string Chain2()
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{
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return Other?.Other.Other?.Other.Field1?.ToString()?.GetType().Name;
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}
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public int? Test2()
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{
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return Field1?.ToString().Length ?? 42;
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}
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public int? GetTextLengthNRE()
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{
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return (Field1?.ToString()).Length;
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}
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}
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public interface ITest
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{
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int Int();
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ITest Next();
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}
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private int GetInt()
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{
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return 9;
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}
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private string GetString()
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{
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return null;
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}
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private MyClass GetMyClass()
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{
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return null;
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}
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private MyStruct? GetMyStruct()
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{
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return null;
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}
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public string Substring()
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{
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return GetString()?.Substring(GetInt());
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}
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public void CallSubstringAndIgnoreResult()
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{
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GetString()?.Substring(GetInt());
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}
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private void Use<T>(T t)
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{
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}
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public void CallDone()
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{
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GetMyClass()?.Done();
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GetMyClass()?.Field?.Done();
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GetMyClass()?.Field.Done();
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GetMyClass()?.Property?.Done();
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GetMyClass()?.Property.Done();
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GetMyClass()?.Method(GetInt())?.Done();
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GetMyClass()?.Method(GetInt()).Done();
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GetMyClass()?[GetInt()]?.Done();
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GetMyClass()?[GetInt()].Done();
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}
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public void CallGetBool()
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{
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GetMyClass()?.GetBool();
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GetMyClass()?.Field?.GetBool();
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GetMyClass()?.Field.GetBool();
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GetMyClass()?.Property?.GetBool();
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GetMyClass()?.Property.GetBool();
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GetMyClass()?.Method(GetInt())?.GetBool();
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GetMyClass()?.Method(GetInt()).GetBool();
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GetMyClass()?[GetInt()]?.GetBool();
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GetMyClass()?[GetInt()].GetBool();
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}
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public void CallDoneStruct()
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{
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GetMyStruct()?.Done();
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GetMyStruct()?.Field?.Done();
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GetMyStruct()?.Field.Done();
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GetMyStruct()?.Property1?.Done();
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GetMyStruct()?.Property2.Done();
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GetMyStruct()?.Method1(GetInt())?.Done();
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GetMyStruct()?.Method2(GetInt()).Done();
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GetMyStruct()?[GetInt()]?.Done();
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}
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public void CallGetBoolStruct()
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{
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GetMyStruct()?.GetBool();
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GetMyStruct()?.Field?.GetBool();
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GetMyStruct()?.Field.GetBool();
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GetMyStruct()?.Property1?.GetBool();
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GetMyStruct()?.Property2.GetBool();
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GetMyStruct()?.Method1(GetInt())?.GetBool();
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GetMyStruct()?.Method2(GetInt()).GetBool();
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GetMyStruct()?[GetInt()]?.GetBool();
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}
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public void RequiredParentheses()
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{
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(GetMyClass()?.Field).Done();
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(GetMyClass()?.Method(GetInt())).Done();
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(GetMyStruct()?.Property2)?.Done();
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}
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public int?[] ChainsOnClass()
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{
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return new int?[9] {
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GetMyClass()?.IntVal,
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GetMyClass()?.Field.IntVal,
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GetMyClass()?.Field?.IntVal,
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GetMyClass()?.Property.IntVal,
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GetMyClass()?.Property?.IntVal,
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GetMyClass()?.Method(GetInt()).IntVal,
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GetMyClass()?.Method(GetInt())?.IntVal,
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GetMyClass()?[GetInt()].IntVal,
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GetMyClass()?[GetInt()]?.IntVal
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};
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}
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public int?[] ChainsStruct()
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{
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return new int?[8] {
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GetMyStruct()?.IntVal,
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GetMyStruct()?.Field.IntVal,
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GetMyStruct()?.Field?.IntVal,
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GetMyStruct()?.Property2.IntVal,
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GetMyStruct()?.Property1?.IntVal,
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GetMyStruct()?.Method2(GetInt()).IntVal,
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GetMyStruct()?.Method1(GetInt())?.IntVal,
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GetMyStruct()?[GetInt()]?.IntVal
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};
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}
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public int CoalescingReturn()
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{
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return GetMyClass()?.IntVal ?? 1;
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}
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public void Coalescing()
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{
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Use(GetMyClass()?.IntVal ?? 1);
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}
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public void CoalescingString()
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{
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Use(GetMyClass()?.Text ?? "Hello");
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}
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public void CallOnValueTypeField()
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{
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Use(GetMyClass()?.IntVal.ToString());
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Use(GetMyStruct()?.IntVal.ToString());
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Use(GetMyClass()?.ReadonlyIntVal.ToString());
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Use(GetMyStruct()?.ReadonlyIntVal.ToString());
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GetMyClass()?.StructField.Done();
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GetMyClass()?.ReadonlyStructField.Done();
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}
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public void InvokeDelegate(EventHandler eh)
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{
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eh?.Invoke(null, EventArgs.Empty);
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}
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public int? InvokeDelegate(Func<int> f)
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{
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return f?.Invoke();
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}
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private void NotNullPropagation(MyClass c)
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{
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// don't decompile this to "(c?.IntVal ?? 0) != 0"
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if (c != null && c.IntVal != 0)
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{
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Console.WriteLine("non-zero");
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}
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if (c == null || c.IntVal == 0)
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{
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Console.WriteLine("null or zero");
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}
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Console.WriteLine("end of method");
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}
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private void Setter(MyClass c)
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{
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if (c != null)
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{
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c.IntVal = 1;
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}
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Console.WriteLine();
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if (c != null)
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{
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c.Property = null;
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}
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}
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private static int? GenericUnconstrainedInt<T>(T t) where T : ITest
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{
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return t?.Int();
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}
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private static int? GenericClassConstraintInt<T>(T t) where T : class, ITest
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{
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return t?.Int();
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}
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private static int? GenericStructConstraintInt<T>(T? t) where T : struct, ITest
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{
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return t?.Int();
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}
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private static int? GenericRefUnconstrainedInt<T>(ref T t) where T : ITest
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{
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return t?.Int();
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}
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private static int? GenericRefClassConstraintInt<T>(ref T t) where T : class, ITest
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{
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return t?.Int();
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}
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private static int? GenericRefStructConstraintInt<T>(ref T? t) where T : struct, ITest
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{
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return t?.Int();
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}
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public int? Issue1709(object obj)
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{
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return (obj as ICollection)?.Count + (obj as ICollection<int>)?.Count;
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}
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private static void Issue1689(List<byte[]> setsOfNumbers)
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{
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Console.WriteLine(setsOfNumbers?[0]?[1].ToString() == "2");
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Console.WriteLine(setsOfNumbers?[1]?[1].ToString() == null);
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}
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private static byte[] GetBytes()
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{
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return null;
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}
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private static void ArrayLengthWithFallback()
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{
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Console.WriteLine(GetBytes()?.Length ?? 0);
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Console.WriteLine(GetBytes()?.LongLength ?? 0);
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}
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private static dynamic DynamicNullProp(dynamic a)
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{
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return a?.b.c(1)?.d[10];
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}
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private static string Issue3181()
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{
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#if EXPECTED_OUTPUT
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return ((int?)null)?.ToString();
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#else
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int? x = null;
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return x?.ToString();
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#endif
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}
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}
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}
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