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[Frontend] Hide @execution attribute behind an experimental feature ExecutionAttribute
Since the proposal has not been approved yet we cannot expose `@execution` attribute.
1 parent e2ff330 commit dd1be8f

19 files changed

+144
-18
lines changed

‎include/swift/AST/DeclAttr.def‎

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -545,6 +545,7 @@ DECL_ATTR_FEATURE_REQUIREMENT(ABI, ABIAttribute)
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DECL_ATTR(execution, Execution,
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OnFunc | ABIBreakingToAdd | ABIBreakingToRemove | APIBreakingToAdd | APIBreakingToRemove,
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166)
548+
DECL_ATTR_FEATURE_REQUIREMENT(Execution, ExecutionAttribute)
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LAST_DECL_ATTR(Execution)
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‎include/swift/AST/PrintOptions.h‎

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Original file line numberDiff line numberDiff line change
@@ -397,6 +397,9 @@ struct PrintOptions {
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/// Suppress modify/read accessors.
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bool SuppressCoroutineAccessors = false;
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/// Suppress the @execution attribute
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bool SuppressExecutionAttribute = false;
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400403
/// List of attribute kinds that should not be printed.
401404
std::vector<AnyAttrKind> ExcludeAttrList = {
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DeclAttrKind::Transparent, DeclAttrKind::Effects,

‎include/swift/Basic/Features.def‎

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Original file line numberDiff line numberDiff line change
@@ -436,6 +436,10 @@ SUPPRESSIBLE_EXPERIMENTAL_FEATURE(AddressableTypes, true)
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/// Allow the @abi attribute.
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SUPPRESSIBLE_EXPERIMENTAL_FEATURE(ABIAttribute, true)
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439+
/// Allow the @execution attribute. This is also connected to
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/// AsyncCallerExecution feature.
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SUPPRESSIBLE_EXPERIMENTAL_FEATURE(ExecutionAttribute, false)
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/// Functions with nonisolated isolation inherit their isolation from the
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/// calling context.
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EXPERIMENTAL_FEATURE(AsyncCallerExecution, false)

‎lib/AST/ASTPrinter.cpp‎

Lines changed: 10 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -3251,6 +3251,14 @@ suppressingFeatureCustomAvailability(PrintOptions &options,
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action();
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}
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static void
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suppressingFeatureExecutionAttribute(PrintOptions &options,
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llvm::function_ref<void()> action) {
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llvm::SaveAndRestore<bool> scope1(options.SuppressExecutionAttribute, true);
3258+
ExcludeAttrRAII scope2(options.ExcludeAttrList, DeclAttrKind::Execution);
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action();
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}
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/// Suppress the printing of a particular feature.
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static void suppressingFeature(PrintOptions &options, Feature feature,
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llvm::function_ref<void()> action) {
@@ -6423,7 +6431,8 @@ class TypePrinter : public TypeVisitor<TypePrinter> {
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break;
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case FunctionTypeIsolation::Kind::NonIsolatedCaller:
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Printer << "@execution(caller) ";
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if (!Options.SuppressExecutionAttribute)
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Printer << "@execution(caller) ";
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break;
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}
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‎lib/AST/Attr.cpp‎

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Original file line numberDiff line numberDiff line change
@@ -305,6 +305,9 @@ void IsolatedTypeAttr::printImpl(ASTPrinter &printer,
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void ExecutionTypeAttr::printImpl(ASTPrinter &printer,
307307
const PrintOptions &options) const {
308+
if (options.SuppressExecutionAttribute)
309+
return;
310+
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printer.callPrintStructurePre(PrintStructureKind::BuiltinAttribute);
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printer.printAttrName("@execution");
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printer << "(";

‎lib/AST/FeatureSet.cpp‎

Lines changed: 39 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -416,6 +416,45 @@ static bool usesFeatureBuiltinEmplaceTypedThrows(Decl *decl) {
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return false;
417417
}
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static bool usesFeatureExecutionAttribute(Decl *decl) {
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if (decl->getAttrs().hasAttribute<ExecutionAttr>())
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return true;
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auto VD = dyn_cast<ValueDecl>(decl);
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if (!VD)
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return false;
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auto hasExecutionAttr = [](TypeRepr *R) {
428+
if (!R)
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return false;
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return R->findIf([](TypeRepr *repr) {
432+
if (auto *AT = dyn_cast<AttributedTypeRepr>(repr)) {
433+
return llvm::any_of(AT->getAttrs(), [](TypeOrCustomAttr attr) {
434+
if (auto *TA = attr.dyn_cast<TypeAttribute *>()) {
435+
return isa<ExecutionTypeAttr>(TA);
436+
}
437+
return false;
438+
});
439+
}
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return false;
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});
442+
};
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// Check if any parameters that have `@execution` attribute.
445+
if (auto *PL = getParameterList(VD)) {
446+
for (auto *P : *PL) {
447+
if (hasExecutionAttr(P->getTypeRepr()))
448+
return true;
449+
}
450+
}
451+
452+
if (hasExecutionAttr(VD->getResultTypeRepr()))
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return true;
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return false;
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}
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// ----------------------------------------------------------------------------
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// MARK: - FeatureSet
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// ----------------------------------------------------------------------------

‎lib/Parse/ParseDecl.cpp‎

Lines changed: 6 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -4725,6 +4725,12 @@ ParserStatus Parser::parseTypeAttribute(TypeOrCustomAttr &result,
47254725
}
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case TypeAttrKind::Execution: {
4728+
if (!Context.LangOpts.hasFeature(Feature::ExecutionAttribute)) {
4729+
diagnose(Tok, diag::requires_experimental_feature, "@execution", false,
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getFeatureName(Feature::ExecutionAttribute));
4731+
return makeParserError();
4732+
}
4733+
47284734
SourceLoc lpLoc = Tok.getLoc(), behaviorLoc, rpLoc;
47294735
if (!consumeIfNotAtStartOfLine(tok::l_paren)) {
47304736
if (!justChecking) {

‎test/ASTGen/attrs.swift‎

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Original file line numberDiff line numberDiff line change
@@ -2,6 +2,7 @@
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// RUN: %target-swift-frontend-dump-parse \
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// RUN: -enable-experimental-feature ABIAttribute \
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// RUN: -enable-experimental-feature ExecutionAttribute \
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// RUN: -enable-experimental-feature Extern \
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// RUN: -enable-experimental-feature LifetimeDependence \
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// RUN: -enable-experimental-feature SymbolLinkageMarkers \
@@ -11,6 +12,7 @@
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// RUN: %target-swift-frontend-dump-parse \
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// RUN: -enable-experimental-feature ABIAttribute \
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// RUN: -enable-experimental-feature ExecutionAttribute \
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// RUN: -enable-experimental-feature Extern \
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// RUN: -enable-experimental-feature LifetimeDependence \
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// RUN: -enable-experimental-feature SymbolLinkageMarkers \
@@ -23,6 +25,7 @@
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// RUN: -module-abi-name ASTGen \
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// RUN: -enable-experimental-feature ParserASTGen \
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// RUN: -enable-experimental-feature ABIAttribute \
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// RUN: -enable-experimental-feature ExecutionAttribute \
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// RUN: -enable-experimental-feature Extern \
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// RUN: -enable-experimental-feature LifetimeDependence \
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// RUN: -enable-experimental-feature SymbolLinkageMarkers \
@@ -32,6 +35,7 @@
3235
// REQUIRES: swift_swift_parser
3336
// REQUIRES: swift_feature_ParserASTGen
3437
// REQUIRES: swift_feature_ABIAttribute
38+
// REQUIRES: swift_feature_ExecutionAttribute
3539
// REQUIRES: swift_feature_Extern
3640
// REQUIRES: swift_feature_LifetimeDependence
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// REQUIRES: swift_feature_SymbolLinkageMarkers

‎test/Concurrency/Runtime/nonisolated_inherits_isolation.swift‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,11 +1,12 @@
1-
// RUN: %target-run-simple-swift( -swift-version 6 -g %import-libdispatch -import-objc-header %S/Inputs/RunOnMainActor.h -enable-experimental-feature AsyncCallerExecution )
1+
// RUN: %target-run-simple-swift( -swift-version 6 -g %import-libdispatch -import-objc-header %S/Inputs/RunOnMainActor.h -enable-experimental-feature ExecutionAttribute -enable-experimental-feature AsyncCallerExecution )
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33
// REQUIRES: executable_test
44
// REQUIRES: concurrency
55
// REQUIRES: concurrency_runtime
66
// REQUIRES: libdispatch
77
// REQUIRES: asserts
88

9+
// REQUIRES: swift_feature_ExecutionAttribute
910
// REQUIRES: swift_feature_AsyncCallerExecution
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1112
// UNSUPPORTED: freestanding

‎test/Concurrency/attr_execution.swift‎

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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,7 @@
1-
// RUN: %target-swift-emit-silgen -enable-experimental-feature AsyncCallerExecution %s | %FileCheck %s
1+
// RUN: %target-swift-emit-silgen -enable-experimental-feature ExecutionAttribute -enable-experimental-feature AsyncCallerExecution %s | %FileCheck %s
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33
// REQUIRES: asserts
4+
// REQUIRES: swift_feature_ExecutionAttribute
45
// REQUIRES: swift_feature_AsyncCallerExecution
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67

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