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This is an attribute that gets put on an import in library FooKit to keep it from being a requirement to import FooKit. It's not checked at all, meaning that in this form it is up to the author of FooKit to make sure nothing in its API or ABI depends on the implementation-only dependency. There's also no debugging support here (debugging FooKit /should/ import the implementation-only dependency if it's present). The goal is to get to a point where it /can/ be checked, i.e. FooKit developers are prevented from writing code that would rely on FooKit's implementation-only dependency being present when compiling clients of FooKit. But right now it's not. rdar://problem/48985979
73 lines
3.1 KiB
Swift
73 lines
3.1 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: echo "public struct X {}; public var x = X()" | %target-swift-frontend -module-name import_builtin -parse-stdlib -emit-module -o %t -
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// RUN: echo "public func foo() -> Int { return false }" > %t/import_text.swift
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// RUN: echo "public func phoûx() -> Int { return false }" > %t/français.swift
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// RUN: %target-swift-frontend -typecheck %s -I %t -I %S/../../Inputs/ -sdk "" -enable-source-import -module-name main -verify -show-diagnostics-after-fatal -verify-ignore-unknown
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// -verify-ignore-unknown is for:
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// <unknown>:0: error: unexpected note produced: did you forget to set an SDK using -sdk or SDKROOT?
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// <unknown>:0: error: unexpected note produced: use "xcrun swiftc" to select the default macOS SDK installed with Xcode
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// <unknown>:0: error: unexpected note produced: did you forget to set an SDK using -sdk or SDKROOT?
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// <unknown>:0: error: unexpected note produced: use "xcrun swiftc" to select the default macOS SDK installed with Xcode
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// <unknown>:0: error: unexpected note produced: did you forget to set an SDK using -sdk or SDKROOT?
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// <unknown>:0: error: unexpected note produced: use "xcrun swiftc" to select the default macOS SDK installed with Xcode
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import Builtin // expected-error {{no such module 'Builtin'}}
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import import_builtin
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extension Int32 {
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init(_: import_builtin.X) { }
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}
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func indirectBuiltin() {
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Int(Int32(import_builtin.x)) // expected-warning{{unused}}
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}
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func f0() {
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import Swift // expected-error{{declaration is only valid at file scope}}
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}
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import func Swift.print
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func f1(_ a: Swift.Int) -> Swift.Void { print(a) }
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import func Swift.print
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// rdar://14418336
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#import something_nonexistent // expected-error {{expected expression}} expected-error {{no such module 'something_nonexistent'}}
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// Import specific decls
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import typealias Swift.Int
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import struct Swift.Int
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import typealias Swift.ManagedBuffer
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import class Swift.ManagedBuffer
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import typealias Swift.Bool
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import struct Swift.Bool
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import protocol Swift.IteratorProtocol
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import var import_builtin.x
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import func Swift.min
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import var x // expected-error {{expected module name}}
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import struct Swift.nonexistent // expected-error {{struct 'nonexistent' does not exist in module 'Swift'}}
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import Swift.import.abc // expected-error {{expected identifier in import declaration}}
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// expected-error @-1 {{keyword 'import' cannot be used as an identifier here}}
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// expected-note @-2 {{if this name is unavoidable, use backticks to escape it}}
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import where Swift.Int // expected-error {{expected identifier}}
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// expected-error @-1 {{keyword 'where' cannot be used as an identifier here}}
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// expected-note @-2 {{if this name is unavoidable, use backticks to escape it}}
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import 2 // expected-error {{expected identifier}}
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import really.nonexistent // expected-error {{no such module 'really.nonexistent'}}
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import import_text // no-warning despite function body problems
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var _ : Int = foo()
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import français
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import func français.phoûx
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import main // expected-warning {{file 'import.swift' is part of module 'main'; ignoring import}}
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@_exported @_implementationOnly import empty // expected-error {{module 'empty' cannot be both exported and implementation-only}} {{12-33=}}
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