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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using System.Threading.Tasks;
namespace DebuggerTests
{
public class PointerTests
{
public static unsafe void LocalPointers()
{
int ivalue0 = 5;
int ivalue1 = 10;
int* ip = &ivalue0;
int* ip_null = null;
int** ipp = &ip;
int** ipp_null = &ip_null;
int*[] ipa = new int*[] { &ivalue0, &ivalue1, null };
int**[] ippa = new int**[] { &ip, &ip_null, ipp, ipp_null, null };
char cvalue0 = 'q';
char* cp = &cvalue0;
DateTime dt = new DateTime(5, 6, 7, 8, 9, 10);
void* vp = &dt;
void* vp_null = null;
void** vpp = &vp;
void** vpp_null = &vp_null;
DateTime* dtp = &dt;
DateTime* dtp_null = null;
DateTime*[] dtpa = new DateTime*[] { dtp, dtp_null };
DateTime**[] dtppa = new DateTime**[] { &dtp, &dtp_null, null };
Console.WriteLine($"-- break here: ip_null==null: {ip_null == null}, ipp_null: {ipp_null == null}, *ipp_null==ip_null: {*ipp_null == ip_null}, *ipp_null==null: {*ipp_null == null}");
var gs = new GenericStructWithUnmanagedT<DateTime> { Value = new DateTime(1, 2, 3, 4, 5, 6), IntField = 4, DTPP = &dtp };
var gs_null = new GenericStructWithUnmanagedT<DateTime> { Value = new DateTime(1, 2, 3, 4, 5, 6), IntField = 4, DTPP = &dtp_null };
var gsp = &gs;
var gsp_null = &gs_null;
var gspa = new GenericStructWithUnmanagedT<DateTime>*[] { null, gsp, gsp_null };
var cwp = new GenericClassWithPointers<DateTime> { Ptr = dtp };
var cwp_null = new GenericClassWithPointers<DateTime>();
Console.WriteLine($"{(int)*ip}, {(int)**ipp}, {ipp_null == null}, {ip_null == null}, {ippa == null}, {ipa}, {(char)*cp}, {(vp == null ? "null" : "not null")}, {dtp->Second}, {gsp->IntField}, {cwp}, {cwp_null}, {gs_null}");
PointersAsArgsTest(ip, ipp, ipa, ippa, &dt, &dtp, dtpa, dtppa);
}
static unsafe void PointersAsArgsTest(int* ip, int** ipp, int*[] ipa, int**[] ippa,
DateTime* dtp, DateTime** dtpp, DateTime*[] dtpa, DateTime**[] dtppa)
{
Console.WriteLine($"break here!");
if (ip == null)
Console.WriteLine($"ip is null");
Console.WriteLine($"done!");
}
public static unsafe async Task LocalPointersAsync()
{
int ivalue0 = 5;
int ivalue1 = 10;
int* ip = &ivalue0;
int* ip_null = null;
int** ipp = &ip;
int** ipp_null = &ip_null;
int*[] ipa = new int*[] { &ivalue0, &ivalue1, null };
int**[] ippa = new int**[] { &ip, &ip_null, ipp, ipp_null, null };
char cvalue0 = 'q';
char* cp = &cvalue0;
DateTime dt = new DateTime(5, 6, 7, 8, 9, 10);
void* vp = &dt;
void* vp_null = null;
void** vpp = &vp;
void** vpp_null = &vp_null;
DateTime* dtp = &dt;
DateTime* dtp_null = null;
DateTime*[] dtpa = new DateTime*[] { dtp, dtp_null };
DateTime**[] dtppa = new DateTime**[] { &dtp, &dtp_null, null };
Console.WriteLine($"-- break here: ip_null==null: {ip_null == null}, ipp_null: {ipp_null == null}, *ipp_null==ip_null: {*ipp_null == ip_null}, *ipp_null==null: {*ipp_null == null}");
var gs = new GenericStructWithUnmanagedT<DateTime> { Value = new DateTime(1, 2, 3, 4, 5, 6), IntField = 4, DTPP = &dtp };
var gs_null = new GenericStructWithUnmanagedT<DateTime> { Value = new DateTime(1, 2, 3, 4, 5, 6), IntField = 4, DTPP = &dtp_null };
var gsp = &gs;
var gsp_null = &gs_null;
var gspa = new GenericStructWithUnmanagedT<DateTime>*[] { null, gsp, gsp_null };
var cwp = new GenericClassWithPointers<DateTime> { Ptr = dtp };
var cwp_null = new GenericClassWithPointers<DateTime>();
Console.WriteLine($"{(int)*ip}, {(int)**ipp}, {ipp_null == null}, {ip_null == null}, {ippa == null}, {ipa}, {(char)*cp}, {(vp == null ? "null" : "not null")}, {dtp->Second}, {gsp->IntField}, {cwp}, {cwp_null}, {gs_null}");
}
// async methods cannot have unsafe params, so no test for that
}
public unsafe struct GenericStructWithUnmanagedT<T> where T : unmanaged
{
public T Value;
public int IntField;
public DateTime** DTPP;
}
public unsafe class GenericClassWithPointers<T> where T : unmanaged
{
public unsafe T* Ptr;
}
}
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