| //===--- Availability.h - Classes for availability --------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This files defines some classes that implement availability checking. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_CLANG_AST_AVAILABILITY_H |
| #define LLVM_CLANG_AST_AVAILABILITY_H |
| |
| #include "clang/Basic/SourceLocation.h" |
| #include "clang/Basic/VersionTuple.h" |
| #include "llvm/ADT/StringRef.h" |
| |
| namespace clang { |
| |
| /// \brief One specifier in an @available expression. |
| /// |
| /// \code |
| /// @available(macos 10.10, *) |
| /// \endcode |
| /// |
| /// Here, 'macos 10.10' and '*' both map to an instance of this type. |
| /// |
| class AvailabilitySpec { |
| /// Represents the version that this specifier requires. If the host OS |
| /// version is greater than or equal to Version, the @available will evaluate |
| /// to true. |
| VersionTuple Version; |
| |
| /// Name of the platform that Version corresponds to. |
| StringRef Platform; |
| |
| SourceLocation BeginLoc, EndLoc; |
| |
| public: |
| AvailabilitySpec(VersionTuple Version, StringRef Platform, |
| SourceLocation BeginLoc, SourceLocation EndLoc) |
| : Version(Version), Platform(Platform), BeginLoc(BeginLoc), |
| EndLoc(EndLoc) {} |
| |
| /// This constructor is used when representing the '*' case. |
| AvailabilitySpec(SourceLocation StarLoc) |
| : BeginLoc(StarLoc), EndLoc(StarLoc) {} |
| |
| VersionTuple getVersion() const { return Version; } |
| StringRef getPlatform() const { return Platform; } |
| SourceLocation getBeginLoc() const { return BeginLoc; } |
| SourceLocation getEndLoc() const { return EndLoc; } |
| |
| /// Returns true when this represents the '*' case. |
| bool isOtherPlatformSpec() const { return Version.empty(); } |
| }; |
| |
| } // end namespace clang |
| |
| #endif |