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diff --git a/include/clang/Basic/VersionTuple.h b/include/clang/Basic/VersionTuple.h
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-//===- VersionTuple.h - Version Number Handling -----------------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-///
-/// \file
-/// \brief Defines the clang::VersionTuple class, which represents a version in
-/// the form major[.minor[.subminor]].
-///
-//===----------------------------------------------------------------------===//
-#ifndef LLVM_CLANG_BASIC_VERSIONTUPLE_H
-#define LLVM_CLANG_BASIC_VERSIONTUPLE_H
-
-#include "clang/Basic/LLVM.h"
-#include "llvm/ADT/Optional.h"
-#include <string>
-#include <tuple>
-
-namespace clang {
-
-/// \brief Represents a version number in the form major[.minor[.subminor[.build]]].
-class VersionTuple {
- unsigned Major : 31;
-
- unsigned UsesUnderscores : 1;
-
- unsigned Minor : 31;
- unsigned HasMinor : 1;
-
- unsigned Subminor : 31;
- unsigned HasSubminor : 1;
-
- unsigned Build : 31;
- unsigned HasBuild : 1;
-
-public:
- VersionTuple()
- : Major(0), UsesUnderscores(false), Minor(0), HasMinor(false),
- Subminor(0), HasSubminor(false), Build(0), HasBuild(false) {}
-
- explicit VersionTuple(unsigned Major)
- : Major(Major), UsesUnderscores(false), Minor(0), HasMinor(false),
- Subminor(0), HasSubminor(false), Build(0), HasBuild(false) {}
-
- explicit VersionTuple(unsigned Major, unsigned Minor,
- bool UsesUnderscores = false)
- : Major(Major), UsesUnderscores(UsesUnderscores), Minor(Minor),
- HasMinor(true), Subminor(0), HasSubminor(false), Build(0),
- HasBuild(false) {}
-
- explicit VersionTuple(unsigned Major, unsigned Minor, unsigned Subminor,
- bool UsesUnderscores = false)
- : Major(Major), UsesUnderscores(UsesUnderscores), Minor(Minor),
- HasMinor(true), Subminor(Subminor), HasSubminor(true), Build(0),
- HasBuild(false) {}
-
- explicit VersionTuple(unsigned Major, unsigned Minor, unsigned Subminor,
- unsigned Build, bool UsesUnderscores = false)
- : Major(Major), UsesUnderscores(UsesUnderscores), Minor(Minor),
- HasMinor(true), Subminor(Subminor), HasSubminor(true), Build(Build),
- HasBuild(true) {}
-
- /// \brief Determine whether this version information is empty
- /// (e.g., all version components are zero).
- bool empty() const {
- return Major == 0 && Minor == 0 && Subminor == 0 && Build == 0;
- }
-
- /// \brief Retrieve the major version number.
- unsigned getMajor() const { return Major; }
-
- /// \brief Retrieve the minor version number, if provided.
- Optional<unsigned> getMinor() const {
- if (!HasMinor)
- return None;
- return Minor;
- }
-
- /// \brief Retrieve the subminor version number, if provided.
- Optional<unsigned> getSubminor() const {
- if (!HasSubminor)
- return None;
- return Subminor;
- }
-
- /// \brief Retrieve the build version number, if provided.
- Optional<unsigned> getBuild() const {
- if (!HasBuild)
- return None;
- return Build;
- }
-
- bool usesUnderscores() const {
- return UsesUnderscores;
- }
-
- void UseDotAsSeparator() {
- UsesUnderscores = false;
- }
-
- /// \brief Determine if two version numbers are equivalent. If not
- /// provided, minor and subminor version numbers are considered to be zero.
- friend bool operator==(const VersionTuple& X, const VersionTuple &Y) {
- return X.Major == Y.Major && X.Minor == Y.Minor &&
- X.Subminor == Y.Subminor && X.Build == Y.Build;
- }
-
- /// \brief Determine if two version numbers are not equivalent.
- ///
- /// If not provided, minor and subminor version numbers are considered to be
- /// zero.
- friend bool operator!=(const VersionTuple &X, const VersionTuple &Y) {
- return !(X == Y);
- }
-
- /// \brief Determine whether one version number precedes another.
- ///
- /// If not provided, minor and subminor version numbers are considered to be
- /// zero.
- friend bool operator<(const VersionTuple &X, const VersionTuple &Y) {
- return std::tie(X.Major, X.Minor, X.Subminor, X.Build) <
- std::tie(Y.Major, Y.Minor, Y.Subminor, Y.Build);
- }
-
- /// \brief Determine whether one version number follows another.
- ///
- /// If not provided, minor and subminor version numbers are considered to be
- /// zero.
- friend bool operator>(const VersionTuple &X, const VersionTuple &Y) {
- return Y < X;
- }
-
- /// \brief Determine whether one version number precedes or is
- /// equivalent to another.
- ///
- /// If not provided, minor and subminor version numbers are considered to be
- /// zero.
- friend bool operator<=(const VersionTuple &X, const VersionTuple &Y) {
- return !(Y < X);
- }
-
- /// \brief Determine whether one version number follows or is
- /// equivalent to another.
- ///
- /// If not provided, minor and subminor version numbers are considered to be
- /// zero.
- friend bool operator>=(const VersionTuple &X, const VersionTuple &Y) {
- return !(X < Y);
- }
-
- /// \brief Retrieve a string representation of the version number.
- std::string getAsString() const;
-
- /// \brief Try to parse the given string as a version number.
- /// \returns \c true if the string does not match the regular expression
- /// [0-9]+(\.[0-9]+){0,3}
- bool tryParse(StringRef string);
-};
-
-/// \brief Print a version number.
-raw_ostream& operator<<(raw_ostream &Out, const VersionTuple &V);
-
-} // end namespace clang
-#endif // LLVM_CLANG_BASIC_VERSIONTUPLE_H