vendor/llvm/llvm-trunk-r366426

1 files changed, 64 insertions, 0 deletions

diff --git a/include/llvm/TextAPI/MachO/PackedVersion.h b/include/llvm/TextAPI/MachO/PackedVersion.h
new file mode 100644
index 000000000000..2d0138097dd9
--- /dev/null
+++ b/include/llvm/TextAPI/MachO/PackedVersion.h
@@ -0,0 +1,64 @@
+//===- llvm/TextAPI/MachO/PackedVersion.h - PackedVersion -------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Defines the Mach-O packed version format.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TEXTAPI_MACHO_PACKED_VERSION_H
+#define LLVM_TEXTAPI_MACHO_PACKED_VERSION_H
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Support/raw_ostream.h"
+
+namespace llvm {
+namespace MachO {
+
+class PackedVersion {
+  uint32_t Version{0};
+
+public:
+  constexpr PackedVersion() = default;
+  explicit constexpr PackedVersion(uint32_t RawVersion) : Version(RawVersion) {}
+  PackedVersion(unsigned Major, unsigned Minor, unsigned Subminor)
+      : Version((Major << 16) | ((Minor & 0xff) << 8) | (Subminor & 0xff)) {}
+
+  bool empty() const { return Version == 0; }
+
+  /// Retrieve the major version number.
+  unsigned getMajor() const { return Version >> 16; }
+
+  /// Retrieve the minor version number, if provided.
+  unsigned getMinor() const { return (Version >> 8) & 0xff; }
+
+  /// Retrieve the subminor version number, if provided.
+  unsigned getSubminor() const { return Version & 0xff; }
+
+  bool parse32(StringRef Str);
+  std::pair<bool, bool> parse64(StringRef Str);
+
+  bool operator<(const PackedVersion &O) const { return Version < O.Version; }
+
+  bool operator==(const PackedVersion &O) const { return Version == O.Version; }
+
+  bool operator!=(const PackedVersion &O) const { return Version != O.Version; }
+
+  uint32_t rawValue() const { return Version; }
+
+  void print(raw_ostream &OS) const;
+};
+
+inline raw_ostream &operator<<(raw_ostream &OS, const PackedVersion &Version) {
+  Version.print(OS);
+  return OS;
+}
+
+} // end namespace MachO.
+} // end namespace llvm.
+
+#endif // LLVM_TEXTAPI_MACHO_PACKED_VERSION_H