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75 lines
2.9 KiB
C++
75 lines
2.9 KiB
C++
//===--- PlatformKind.h - Swift Language Platform Kinds ---------*- 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 the platform kinds for API availability.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_AST_PLATFORM_KIND_H
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#define SWIFT_AST_PLATFORM_KIND_H
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#include "swift/Basic/LLVM.h"
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#include "swift/Config.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/VersionTuple.h"
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namespace swift {
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class LangOptions;
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/// Available platforms for the availability attribute.
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enum class PlatformKind: uint8_t {
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none,
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#define AVAILABILITY_PLATFORM(X, PrettyName) X,
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#include "swift/AST/PlatformKinds.def"
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};
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/// Returns the short string representing the platform, suitable for
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/// use in availability specifications (e.g., "OSX").
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StringRef platformString(PlatformKind platform);
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/// Returns the platform kind corresponding to the passed-in short platform name
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/// or None if such a platform kind does not exist.
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Optional<PlatformKind> platformFromString(StringRef Name);
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/// Returns a human-readable version of the platform name as a string, suitable
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/// for emission in diagnostics (e.g., "macOS").
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StringRef prettyPlatformString(PlatformKind platform);
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/// Returns whether the passed-in platform is active, given the language
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/// options. A platform is active if either it is the target platform or its
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/// AppExtension variant is the target platform. For example, OS X is
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/// considered active when the target operating system is OS X and app extension
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/// restrictions are enabled, but OSXApplicationExtension is not considered
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/// active when the target platform is OS X and app extension restrictions are
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/// disabled. PlatformKind::none is always considered active.
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/// If ForTargetVariant is true then for zippered builds the target-variant
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/// triple will be used rather than the target to determine whether the
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/// platform is active.
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bool isPlatformActive(PlatformKind Platform, const LangOptions &LangOpts,
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bool ForTargetVariant = false);
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/// Returns the target platform for the given language options.
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PlatformKind targetPlatform(const LangOptions &LangOpts);
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/// Returns true when availability attributes from the "parent" platform
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/// should also apply to the "child" platform for declarations without
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/// an explicit attribute for the child.
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bool inheritsAvailabilityFromPlatform(PlatformKind Child, PlatformKind Parent);
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llvm::VersionTuple canonicalizePlatformVersion(
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PlatformKind platform, const llvm::VersionTuple &version);
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} // end namespace swift
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#endif
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