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0f076c0702
and implement it for @isolated(any) function types. The existing testing was pretty broken: we were diagnosing all sorts of things that don't require type metadata (like using a tuple with an extended existential in a value position in an API signature) and not diagnosing several things that do (like covariant function conversions that erase types). There's therefore some risk to this patch, but I'm not too worried because needing metadata like this is pretty uncommon, and it's likely that programs won't build correctly anyway --- it'll just get caught by the linker instead of the compiler.
80 lines
3.2 KiB
C++
80 lines
3.2 KiB
C++
//===--- FeatureAvailability.def - Availability Metaprogramming -*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines macros used for macro-metaprogramming with feature
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// availability.
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//
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//===----------------------------------------------------------------------===//
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/// FEATURE(N, V)
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/// N - The name of the feature (in UpperCamelCase).
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/// V - The Swift version number, as a tuple, or FUTURE.
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///
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/// The feature Foo turns into two methods on ASTContext:
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/// getFooRuntimeAvailability(), which returns the exact version provided
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/// here, and getFooAvailability(), which maps that version into a version
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/// of the target OS. Because both of these methods exist, it is a bad idea
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/// to use a feature name that ends in "Runtime", or people might get very
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/// confused.
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#ifndef FEATURE
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#define FEATURE(N, V)
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#endif
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/// FUTURE
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///
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/// The version to use for future support.
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#ifndef FUTURE
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#define FUTURE (99, 99)
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#endif
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FEATURE(ObjCMetadataUpdateCallback, (5, 0))
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FEATURE(ObjCGetClassHook, (5, 0))
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FEATURE(OpaqueType, (5, 1))
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FEATURE(ObjCClassStubs, (5, 1))
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FEATURE(BackDeployedConcurrency, (5, 1))
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FEATURE(TypesInAbstractMetadataState, (5, 2))
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FEATURE(PrespecializedGenericMetadata, (5, 4))
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FEATURE(CompareTypeContextDescriptors, (5, 4))
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FEATURE(CompareProtocolConformanceDescriptors, (5, 4))
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FEATURE(IntermodulePrespecializedGenericMetadata, (5, 4))
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FEATURE(Concurrency, (5, 5))
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FEATURE(MultiPayloadEnumTagSinglePayload, (5, 6))
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FEATURE(ObjCIsUniquelyReferenced, (5, 6))
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// Metadata and casting support for parameterized existential types
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FEATURE(ParameterizedExistential, (5, 7))
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FEATURE(VariadicGenericType, (5, 9))
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FEATURE(SignedConformsToProtocol, (5, 9))
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FEATURE(ConcurrencyDiscardingTaskGroup, (5, 9))
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FEATURE(ConcurrencyDistributedActorWithCustomExecutor, (5, 9))
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FEATURE(SignedDescriptor, (5, 9))
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FEATURE(ObjCSymbolicReferences, (5, 11))
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FEATURE(TypedThrows, (5, 11))
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FEATURE(StaticReadOnlyArrays, (5, 11))
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FEATURE(SwiftExceptionPersonality, (5, 11))
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// Metadata support for @isolated(any) function types
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FEATURE(IsolatedAny, (5, 11))
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FEATURE(TaskExecutor, FUTURE)
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FEATURE(Differentiation, FUTURE)
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FEATURE(InitRawStructMetadata, FUTURE)
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#undef FEATURE
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#undef FUTURE
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