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[SE-0497] Implement @export attribute syntax

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Implement the @export(implementation) and @export(interface) attributes
to replace @_alwaysEmitIntoClient and @_neverEmitIntoClient. Provide a
warning + Fix-It to start staging out the very-new
@_neverEmitIntoClient. We'll hold off on pushing folks toward
@_alwaysEmitIntoClient for a little longer.
This commit is contained in:
Doug Gregor
2025-11-07 16:20:43 -08:00
parent ed85a12b59
commit 020b69d4b6
40 changed files with 403 additions and 139 deletions
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36
test/Sema/access-level-and-implementation-only-import-embedded.swift
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@@ -57,20 +57,20 @@ public func explicitlyInlinable(arg: StructFromDirect = StructFromDirect()) {
public func implicitlyInlinablePublic(arg: StructFromDirect = StructFromDirect()) {
// expected-error @-1 {{initializer 'init()' is internal and cannot be referenced from a default argument value}}
// expected-error @-2 {{struct 'StructFromDirect' is internal and cannot be referenced from a default argument value}}
// expected-error @-3 {{struct 'StructFromDirect' cannot be used in an embedded function not marked '@_neverEmitIntoClient' because 'directs' was imported implementation-only}}
// expected-error @-3 {{struct 'StructFromDirect' cannot be used in an embedded function not marked '@export(interface)' because 'directs' was imported implementation-only}}
// expected-error @-4 {{function cannot be declared public because its parameter uses an internal type}}
// expected-note @-5 {{struct 'StructFromDirect' is imported by this file as 'internal' from 'directs'}}
_ = StructFromDirect() // expected-error {{initializer 'init()' cannot be used in an embedded function not marked '@_neverEmitIntoClient' because 'directs' was imported implementation-only}}
// expected-error@-1 {{struct 'StructFromDirect' cannot be used in an embedded function not marked '@_neverEmitIntoClient' because 'directs' was imported implementation-only}}
_ = StructFromDirect() // expected-error {{initializer 'init()' cannot be used in an embedded function not marked '@export(interface)' because 'directs' was imported implementation-only}}
// expected-error@-1 {{struct 'StructFromDirect' cannot be used in an embedded function not marked '@export(interface)' because 'directs' was imported implementation-only}}
if (true) {
_ = StructFromDirect() // expected-error {{initializer 'init()' cannot be used in an embedded function not marked '@_neverEmitIntoClient' because 'directs' was imported implementation-only}}
// expected-error@-1 {{struct 'StructFromDirect' cannot be used in an embedded function not marked '@_neverEmitIntoClient' because 'directs' was imported implementation-only}}
_ = StructFromDirect() // expected-error {{initializer 'init()' cannot be used in an embedded function not marked '@export(interface)' because 'directs' was imported implementation-only}}
// expected-error@-1 {{struct 'StructFromDirect' cannot be used in an embedded function not marked '@export(interface)' because 'directs' was imported implementation-only}}
}
func nested() {
_ = StructFromDirect() // expected-error {{initializer 'init()' cannot be used in an embedded function not marked '@_neverEmitIntoClient' because 'directs' was imported implementation-only}}
// expected-error@-1 {{struct 'StructFromDirect' cannot be used in an embedded function not marked '@_neverEmitIntoClient' because 'directs' was imported implementation-only}}
_ = StructFromDirect() // expected-error {{initializer 'init()' cannot be used in an embedded function not marked '@export(interface)' because 'directs' was imported implementation-only}}
// expected-error@-1 {{struct 'StructFromDirect' cannot be used in an embedded function not marked '@export(interface)' because 'directs' was imported implementation-only}}
}
nested()
@@ -83,19 +83,19 @@ public func implicitlyInlinablePublic(arg: StructFromDirect = StructFromDirect()
}
private func implicitlyInlinablePrivate(arg: StructFromDirect = StructFromDirect()) {
// expected-error @-1 {{struct 'StructFromDirect' cannot be used in an embedded function not marked '@_neverEmitIntoClient' because 'directs' was imported implementation-only}}
// expected-error @-1 {{struct 'StructFromDirect' cannot be used in an embedded function not marked '@export(interface)' because 'directs' was imported implementation-only}}
// expected-note @-2 {{global function 'implicitlyInlinablePrivate(arg:)' is not '@usableFromInline' or public}}
_ = StructFromDirect() // expected-error {{initializer 'init()' cannot be used in an embedded function not marked '@_neverEmitIntoClient' because 'directs' was imported implementation-only}}
// expected-error@-1 {{struct 'StructFromDirect' cannot be used in an embedded function not marked '@_neverEmitIntoClient' because 'directs' was imported implementation-only}}
_ = StructFromDirect() // expected-error {{initializer 'init()' cannot be used in an embedded function not marked '@export(interface)' because 'directs' was imported implementation-only}}
// expected-error@-1 {{struct 'StructFromDirect' cannot be used in an embedded function not marked '@export(interface)' because 'directs' was imported implementation-only}}
if (true) {
_ = StructFromDirect() // expected-error {{initializer 'init()' cannot be used in an embedded function not marked '@_neverEmitIntoClient' because 'directs' was imported implementation-only}}
// expected-error@-1 {{struct 'StructFromDirect' cannot be used in an embedded function not marked '@_neverEmitIntoClient' because 'directs' was imported implementation-only}}
_ = StructFromDirect() // expected-error {{initializer 'init()' cannot be used in an embedded function not marked '@export(interface)' because 'directs' was imported implementation-only}}
// expected-error@-1 {{struct 'StructFromDirect' cannot be used in an embedded function not marked '@export(interface)' because 'directs' was imported implementation-only}}
}
func nested() {
_ = StructFromDirect() // expected-error {{initializer 'init()' cannot be used in an embedded function not marked '@_neverEmitIntoClient' because 'directs' was imported implementation-only}}
// expected-error@-1 {{struct 'StructFromDirect' cannot be used in an embedded function not marked '@_neverEmitIntoClient' because 'directs' was imported implementation-only}}
_ = StructFromDirect() // expected-error {{initializer 'init()' cannot be used in an embedded function not marked '@export(interface)' because 'directs' was imported implementation-only}}
// expected-error@-1 {{struct 'StructFromDirect' cannot be used in an embedded function not marked '@export(interface)' because 'directs' was imported implementation-only}}
}
nested()
@@ -107,7 +107,7 @@ private func implicitlyInlinablePrivate(arg: StructFromDirect = StructFromDirect
explicitNonInliable()
}
@_neverEmitIntoClient
@export(interface)
public func explicitNonInliable(arg: StructFromDirect = StructFromDirect()) {
// expected-error @-1 {{initializer 'init()' is internal and cannot be referenced from a default argument value}}
// expected-error @-2 {{struct 'StructFromDirect' is internal and cannot be referenced from a default argument value}}
@@ -120,7 +120,7 @@ public func explicitNonInliable(arg: StructFromDirect = StructFromDirect()) {
_ = StructFromDirect()
}
@_neverEmitIntoClient
@export(interface)
func nested() {
_ = StructFromDirect()
}
@@ -134,7 +134,7 @@ public func explicitNonInliable(arg: StructFromDirect = StructFromDirect()) {
explicitNonInliable()
}
@_neverEmitIntoClient
@export(interface)
internal func explicitNonInliableInternal(arg: StructFromDirect = StructFromDirect()) {
_ = StructFromDirect()
@@ -142,7 +142,7 @@ internal func explicitNonInliableInternal(arg: StructFromDirect = StructFromDire
_ = StructFromDirect()
}
@_neverEmitIntoClient
@export(interface)
func nested() {
_ = StructFromDirect()
}