Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Emitting IsReadOnly/In attributes on abstract properties #10542

Merged
merged 1 commit into from Nov 25, 2020
Merged

Emitting IsReadOnly/In attributes on abstract properties #10542

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Jump to
Jump to file
Failed to load files.
Diff view
Diff view
19 changes: 14 additions & 5 deletions src/fsharp/IlxGen.fs
View file
Open in desktop
Expand Up @@ -7129,14 +7129,22 @@ and GenAbstractBinding cenv eenv tref (vref: ValRef) =
let memberInfo = Option.get vref.MemberInfo
let attribs = vref.Attribs
let hasPreserveSigImplFlag, hasSynchronizedImplFlag, hasNoInliningFlag, hasAggressiveInliningImplFlag, attribs = ComputeMethodImplAttribs cenv vref.Deref attribs
if memberInfo.MemberFlags.IsDispatchSlot && not memberInfo.IsImplemented then
let ilAttrs =
[ yield! GenAttrs cenv eenv attribs
yield! GenCompilationArgumentCountsAttr cenv vref.Deref ]

if memberInfo.MemberFlags.IsDispatchSlot && not memberInfo.IsImplemented then
let mspec, _mspecW, ctps, mtps, _curriedArgInfos, argInfos, retInfo, witnessInfos, methArgTys, returnTy =
GetMethodSpecForMemberVal cenv.amap cenv.g memberInfo vref

let ilAttrs =
[ yield! GenAttrs cenv eenv attribs
yield! GenCompilationArgumentCountsAttr cenv vref.Deref

match vref.MemberInfo, returnTy with
| Some memberInfo, Some returnTy when
memberInfo.MemberFlags.MemberKind = MemberKind.PropertyGet ||
memberInfo.MemberFlags.MemberKind = MemberKind.PropertySet ||
memberInfo.MemberFlags.MemberKind = MemberKind.PropertyGetSet ->
match GenReadOnlyAttributeIfNecessary g returnTy with Some ilAttr -> ilAttr | _ -> ()
| _ -> () ]

assert witnessInfos.IsEmpty

let eenvForMeth = EnvForTypars (ctps@mtps) eenv
Expand Down Expand Up @@ -7175,6 +7183,7 @@ and GenAbstractBinding cenv eenv tref (vref: ValRef) =
else
let ilPropDef =
let ilPropTy = GenType cenv.amap m eenvForMeth.tyenv vtyp
let ilPropTy = GenReadOnlyModReqIfNecessary g vtyp ilPropTy
let ilArgTys = v |> ArgInfosOfPropertyVal g |> List.map fst |> GenTypes cenv.amap m eenvForMeth.tyenv
GenPropertyForMethodDef compileAsInstance tref mdef v memberInfo ilArgTys ilPropTy (mkILCustomAttrs ilAttrs) None
let mdef = mdef.WithSpecialName
Expand Down
29 changes: 29 additions & 0 deletions tests/fsharp/Compiler/Language/ByrefTests.fs
View file
Open in desktop
Expand Up @@ -341,4 +341,33 @@ type C<'T>() =
FSharp src
|> compile
|> verifyIL [verifyMethod]
|> ignore

[<Test>]
let ``Returning an 'inref<_>' from an abstract property should emit System.Runtime.CompilerServices.IsReadOnlyAttribute on the return type of the signature`` () =
let src =
"""
module Test

type C =
abstract X: inref<int>
"""

let verifyProperty = """.property instance int32& modreq([runtime]System.Runtime.InteropServices.InAttribute)
X()
{
.custom instance void [runtime]System.Runtime.CompilerServices.IsReadOnlyAttribute::.ctor() = ( 01 00 00 00 )
.get instance int32& modreq([runtime]System.Runtime.InteropServices.InAttribute) Test/C::get_X()
}"""

let verifyMethod = """.method public hidebysig specialname abstract virtual
instance int32& modreq([runtime]System.Runtime.InteropServices.InAttribute)
get_X() cil managed
{
.param [0]
.custom instance void [runtime]System.Runtime.CompilerServices.IsReadOnlyAttribute::.ctor() = ( 01 00 00 00 )"""

FSharp src
|> compile
|> verifyIL [verifyProperty;verifyMethod]
|> ignore