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using System;
using System.Diagnostics.CodeAnalysis;
using Mono.Linker.Tests.Cases.Expectations.Assertions;
namespace Mono.Linker.Tests.Cases.DataFlow
{
public class LocalDataFlowKeptMembers
{
public static void Main ()
{
// These behave as expected
TestBranchMergeGoto ();
TestBranchMergeIf ();
TestBranchMergeIfElse ();
TestBranchMergeSwitch ();
// These are overly conservative (keep members on the wrong types)
// Only illustrate a few cases to keep it concise.
TestBranchGoto ();
TestBranchIf ();
TestBranchIfElse ();
}
[Kept]
public static void TestBranchMergeGoto ()
{
Type t = typeof (BranchMergeGotoType1);
if (String.Empty.Length == 0)
goto End;
t = typeof (BranchMergeGotoType2);
End:
RequirePublicFields (t); // keeps fields for both types
}
[Kept]
class BranchMergeGotoType1
{
[Kept]
public string field;
}
[Kept]
class BranchMergeGotoType2
{
[Kept]
public string field;
}
[Kept]
public static void TestBranchMergeIf ()
{
Type t = typeof (BranchMergeIfType1);
if (String.Empty.Length == 0)
t = typeof (BranchMergeIfType2);
RequirePublicFields (t); // keeps fields for both types
}
[Kept]
class BranchMergeIfType1
{
[Kept]
public string field;
}
[Kept]
class BranchMergeIfType2
{
[Kept]
public string field;
}
[Kept]
public static void TestBranchMergeIfElse ()
{
Type t = null;
if (String.Empty.Length == 0) {
t = typeof (BranchMergeIfElseType1);
} else {
t = typeof (BranchMergeIfElseType2);
}
RequirePublicFields (t); // keeps fields for both types
}
[Kept]
class BranchMergeIfElseType1
{
[Kept]
public string field;
}
[Kept]
class BranchMergeIfElseType2
{
[Kept]
public string field;
}
[Kept]
static int _switchOnField;
[Kept]
public static void TestBranchMergeSwitch ()
{
Type t = null;
switch (_switchOnField) {
case 0:
t = typeof (BranchMergeSwitchType0);
break;
case 1:
t = typeof (BranchMergeSwitchType1);
break;
case 2:
t = typeof (BranchMergeSwitchType2);
break;
case 3:
t = typeof (BranchMergeSwitchType3);
break;
}
RequirePublicFields (t); // keeps fields for all types
}
[Kept]
public static void TestBranchGoto ()
{
Type t = typeof (BranchGotoType1);
if (String.Empty.Length == 0)
goto End;
t = typeof (BranchGotoType2);
RequirePublicFields (t);
End:
return;
}
[Kept]
class BranchGotoType1
{
[Kept] // unnecessary
public string field;
}
[Kept]
class BranchGotoType2
{
[Kept]
public string field;
}
[Kept]
public static void TestBranchIf ()
{
Type t = typeof (BranchIfType1);
if (String.Empty.Length == 0) {
t = typeof (BranchIfType2);
RequirePublicFields (t);
}
}
[Kept]
class BranchIfType1
{
[Kept] // unneccessary
public string field;
}
[Kept]
class BranchIfType2
{
[Kept]
public string field;
}
[Kept]
public static void TestBranchIfElse ()
{
Type t;
if (String.Empty.Length == 0) {
// because this branch *happens* to come first in IL, we will only see one value
t = typeof (BranchIfElseTypeWithMethods);
RequirePublicMethods (t); // this works
} else {
// because this branch *happens* to come second in IL, we will see the merged value for str
t = typeof (BranchIfElseTypeWithFields);
RequirePublicFields (t); // keeps field on BranchIfElseTypeWithMethods
}
}
[Kept]
class BranchIfElseTypeWithMethods
{
[Kept]
public void Method () { }
[Kept] // unnecessary
public string field;
}
[Kept]
class BranchIfElseTypeWithFields
{
public void Method () { }
[Kept]
public string field;
}
[Kept]
class BranchMergeSwitchType0
{
[Kept]
public string field;
}
[Kept]
class BranchMergeSwitchType1
{
[Kept]
public string field;
}
[Kept]
class BranchMergeSwitchType2
{
[Kept]
public string field;
}
[Kept]
class BranchMergeSwitchType3
{
[Kept]
public string field;
}
[Kept]
public static void RequirePublicFields (
[KeptAttributeAttribute(typeof(DynamicallyAccessedMembersAttribute))]
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicFields)]
Type type)
{
}
[Kept]
public static void RequirePublicMethods (
[KeptAttributeAttribute(typeof(DynamicallyAccessedMembersAttribute))]
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicMethods)]
Type type)
{
}
}
}
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