1 files changed, 30 insertions, 0 deletions
diff --git a/version_info.h b/version_info.h
new file mode 100644
index 0000000..c6d2fac
--- /dev/null
+++ b/version_info.h
@@ -0,0 +1,30 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_ZUCCHINI_VERSION_INFO_H_
+#define COMPONENTS_ZUCCHINI_VERSION_INFO_H_
+
+// This file serves as a stable location for main Zucchini version constants,
+// whose names and types should also be stable. These allow external tools to
+// determine Zucchini version at compile time by inclusion or parsing.
+
+namespace zucchini {
+
+// A change in major version indicates breaking changes such that a patch
+// definitely cannot be applied by a zucchini binary whose major version doesn't
+// match.
+enum : uint16_t { kMajorVersion = 1 };
+
+// A change in minor version indicates possibly breaking changes at the element
+// level, such that it may not be possible to apply a patch whose minor version
+// doesn't match this version. To determine if a given patch may be applied with
+// this version, VerifyPatch() should be called.
+enum : uint16_t { kMinorVersion = 0 };
+
+// A empty or error value for major or minor version numbers.
+enum : uint16_t { kInvalidVersion = 0xffff };
+
+}  // namespace zucchini
+
+#endif  // COMPONENTS_ZUCCHINI_VERSION_INFO_H_