//===--- Features.def - Swift Features Metaprogramming ----------*- C++ -*-===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
//
// This file defines macros used for macro-metaprogramming with language
// features.
//
//
// LANGUAGE_FEATURE(FeatureName, SENumber, Description, Option)
//
//   The LANGUAGE_FEATURE macro describes each named feature that is
//   introduced in Swift. It allows Swift code to check for a particular
//   feature with "#if $FeatureName" in source code.
//
//     FeatureName: The name given to this feature to be used in source code,
//       e.g., AsyncAwait.
//     SENumber: The number assigned to this feature in the Swift Evolution
//       process, or 0 if there isn't one.
//     Description: A string literal describing the feature.
//     Option: either a reference to a language option in the form
//       "langOpts.<option name>" or "true" to indicate that it's always
//       enabled.
//===----------------------------------------------------------------------===//

#ifndef LANGUAGE_FEATURE
#  error define LANGUAGE_FEATURE before including Features.def
#endif

LANGUAGE_FEATURE(StaticAssert, 0, "#assert", langOpts.EnableExperimentalStaticAssert)
LANGUAGE_FEATURE(AsyncAwait, 296, "async/await", true)
LANGUAGE_FEATURE(EffectfulProp, 310, "Effectful properties", true)
LANGUAGE_FEATURE(MarkerProtocol, 0, "@_marker protocol", true)
LANGUAGE_FEATURE(Actors, 0, "actors", true)
LANGUAGE_FEATURE(Actors2, 0, "actors #2 (TEMPORARY)", true)
LANGUAGE_FEATURE(ConcurrentFunctions, 0, "@concurrent functions", true)
LANGUAGE_FEATURE(RethrowsProtocol, 0, "@rethrows protocol", true)
LANGUAGE_FEATURE(GlobalActors, 0, "Global actors", langOpts.EnableExperimentalConcurrency)
LANGUAGE_FEATURE(BuiltinJob, 0, "Builtin.Job type", true)
LANGUAGE_FEATURE(Sendable, 0, "Sendable and @Sendable", true)
LANGUAGE_FEATURE(BuiltinExecutor, 0, "Builtin.Executor type", true)
LANGUAGE_FEATURE(BuiltinContinuation, 0, "Continuation builtins", true)
LANGUAGE_FEATURE(BuiltinHopToActor, 0, "Builtin.HopToActor", true)
LANGUAGE_FEATURE(BuiltinTaskGroupWithArgument, 0, "TaskGroup builtins", true)
LANGUAGE_FEATURE(InheritActorContext, 0, "@_inheritActorContext attribute", true)
LANGUAGE_FEATURE(ImplicitSelfCapture, 0, "@_implicitSelfCapture attribute", true)
LANGUAGE_FEATURE(BuiltinBuildExecutor, 0, "Executor-building builtins", true)
LANGUAGE_FEATURE(BuiltinBuildMainExecutor, 0, "MainActor executor building builtin", true)
LANGUAGE_FEATURE(BuiltinCreateAsyncTaskInGroup, 0, "MainActor executor building builtin", true)
LANGUAGE_FEATURE(BuiltinMove, 0, "Builtin.move()", true)
LANGUAGE_FEATURE(BuiltinCopy, 0, "Builtin.copy()", true)
LANGUAGE_FEATURE(BuiltinStackAlloc, 0, "Builtin.stackAlloc", true)
LANGUAGE_FEATURE(SpecializeAttributeWithAvailability, 0, "@_specialize attribute with availability", true)

#undef LANGUAGE_FEATURE
