Add version file.

common/atom_version.h

@@ -0,0 +1,43 @@
+// Copyright (c) 2013 GitHub, Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_VERSION_H
+#define ATOM_VERSION_H
+
+#define ATOM_MAJOR_VERSION 0
+#define ATOM_MINOR_VERSION 3
+#define ATOM_PATCH_VERSION 1
+
+#define ATOM_VERSION_IS_RELEASE 0
+
+#ifndef ATOM_TAG
+# define ATOM_TAG ""
+#endif
+
+#ifndef ATOM_STRINGIFY
+#define ATOM_STRINGIFY(n) ATOM_STRINGIFY_HELPER(n)
+#define ATOM_STRINGIFY_HELPER(n) #n
+#endif
+
+#if ATOM_VERSION_IS_RELEASE
+# define ATOM_VERSION_STRING  ATOM_STRINGIFY(ATOM_MAJOR_VERSION) "." \
+                              ATOM_STRINGIFY(ATOM_MINOR_VERSION) "." \
+                              ATOM_STRINGIFY(ATOM_PATCH_VERSION)     \
+                              ATOM_TAG
+#else
+# define ATOM_VERSION_STRING  ATOM_STRINGIFY(ATOM_MAJOR_VERSION) "." \
+                              ATOM_STRINGIFY(ATOM_MINOR_VERSION) "." \
+                              ATOM_STRINGIFY(ATOM_PATCH_VERSION)     \
+                              ATOM_TAG "-pre"
+#endif
+
+#define ATOM_VERSION "v" ATOM_VERSION_STRING
+
+
+#define ATOM_VERSION_AT_LEAST(major, minor, patch) \
+  (( (major) < ATOM_MAJOR_VERSION) \
+  || ((major) == ATOM_MAJOR_VERSION && (minor) < ATOM_MINOR_VERSION) \
+  || ((major) == ATOM_MAJOR_VERSION && (minor) == ATOM_MINOR_VERSION && (patch) <= ATOM_PATCH_VERSION))
+
+#endif /* ATOM_VERSION_H */