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Add experimental feature for type witness system inference

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This commit is contained in:
Doug Gregor
2022-05-27 11:55:30 -07:00
parent 333ae3f830
commit 8da6caeccd
5 changed files with 9 additions and 9 deletions
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1
include/swift/Basic/Features.def
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@@ -89,6 +89,7 @@ EXPERIMENTAL_FEATURE(NamedOpaqueTypes)
EXPERIMENTAL_FEATURE(FlowSensitiveConcurrencyCaptures)
EXPERIMENTAL_FEATURE(MoveOnly)
EXPERIMENTAL_FEATURE(OneWayClosureParameters)
EXPERIMENTAL_FEATURE(TypeWitnessSystemInference)
#undef EXPERIMENTAL_FEATURE
#undef SUPPRESSIBLE_LANGUAGE_FEATURE

4
include/swift/Basic/LangOptions.h
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@@ -330,10 +330,6 @@ namespace swift {
/// Enable inference of Sendable conformances for public types.
bool EnableInferPublicSendable = false;
/// Enable experimental associated type inference using type witness
/// systems.
bool EnableExperimentalAssociatedTypeInference = false;
/// Disable the implicit import of the _Concurrency module.
bool DisableImplicitConcurrencyModuleImport =
!SWIFT_IMPLICIT_CONCURRENCY_IMPORT;

4
lib/AST/ASTPrinter.cpp
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@@ -3019,6 +3019,10 @@ static bool usesFeatureOneWayClosureParameters(Decl *decl) {
return false;
}
static bool usesFeatureTypeWitnessSystemInference(Decl *decl) {
return false;
}
static void
suppressingFeatureNoAsyncAvailability(PrintOptions &options,
llvm::function_ref<void()> action) {

7
lib/Frontend/CompilerInvocation.cpp
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@@ -455,9 +455,6 @@ static bool ParseLangArgs(LangOptions &Opts, ArgList &Args,
OPT_disable_experimental_opened_existential_types,
true);
Opts.EnableExperimentalAssociatedTypeInference |=
Args.hasArg(OPT_enable_experimental_associated_type_inference);
Opts.EnableInferPublicSendable |=
Args.hasFlag(OPT_enable_infer_public_concurrent_value,
OPT_disable_infer_public_concurrent_value,
@@ -655,7 +652,7 @@ static bool ParseLangArgs(LangOptions &Opts, ArgList &Args,
Opts.Features.insert(Feature::VariadicGenerics);
if (Args.hasArg(OPT_enable_experimental_static_assert))
Opts.Features.insert(Feature::StaticAssert);
if (Args.hasArg(OPT_enable_experimental_associated_type_inference))
if (Args.hasArg(OPT_enable_experimental_named_opaque_types))
Opts.Features.insert(Feature::NamedOpaqueTypes);
if (Args.hasArg(OPT_enable_experimental_flow_sensitive_concurrent_captures))
Opts.Features.insert(Feature::FlowSensitiveConcurrencyCaptures);
@@ -663,6 +660,8 @@ static bool ParseLangArgs(LangOptions &Opts, ArgList &Args,
Opts.Features.insert(Feature::MoveOnly);
if (Args.hasArg(OPT_experimental_one_way_closure_params))
Opts.Features.insert(Feature::OneWayClosureParameters);
if (Args.hasArg(OPT_enable_experimental_associated_type_inference))
Opts.Features.insert(Feature::TypeWitnessSystemInference);
Opts.EnableAppExtensionRestrictions |= Args.hasArg(OPT_enable_app_extension);

2
lib/Sema/TypeCheckProtocolInference.cpp
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@@ -1206,7 +1206,7 @@ AssociatedTypeDecl *AssociatedTypeInference::inferAbstractTypeWitnesses(
// not resolve otherwise.
llvm::SmallVector<AbstractTypeWitness, 2> abstractTypeWitnesses;
if (ctx.LangOpts.EnableExperimentalAssociatedTypeInference) {
if (ctx.LangOpts.hasFeature(Feature::TypeWitnessSystemInference)) {
TypeWitnessSystem system(unresolvedAssocTypes);
collectAbstractTypeWitnesses(system, unresolvedAssocTypes);