split internal.h into files

One day, I could not resist the way it was written.  I finally started
to make the code clean.  This changeset is the beginning of a series of
housekeeping commits.  It is a simple refactoring; split internal.h into
files, so that we can divide and concur in the upcoming commits.  No
lines of codes are either added or removed, except the obvious file
headers/footers.  The generated binary is identical to the one before.

1 files changed, 30 insertions, 0 deletions

diff --git a/internal/serial.h b/internal/serial.h
new file mode 100644
index 0000000000..224ab47ac6
--- /dev/null
+++ b/internal/serial.h
@@ -0,0 +1,30 @@
+#ifndef INTERNAL_SERIAL_H /* -*- C -*- */
+#define INTERNAL_SERIAL_H
+/**
+ * @file
+ * @brief      Internal header for rb_serial_t.
+ * @author     \@shyouhei
+ * @copyright  This  file  is   a  part  of  the   programming  language  Ruby.
+ *             Permission  is hereby  granted,  to  either redistribute  and/or
+ *             modify this file, provided that  the conditions mentioned in the
+ *             file COPYING are met.  Consult the file for details.
+ */
+
+#if defined(HAVE_LONG_LONG)
+typedef unsigned LONG_LONG rb_serial_t;
+# define SERIALT2NUM ULL2NUM
+# define PRI_SERIALT_PREFIX PRI_LL_PREFIX
+# define SIZEOF_SERIAL_T SIZEOF_LONG_LONG
+#elif defined(HAVE_UINT64_T)
+typedef uint64_t rb_serial_t;
+# define SERIALT2NUM SIZET2NUM
+# define PRI_SERIALT_PREFIX PRI_64_PREFIX
+# define SIZEOF_SERIAL_T SIZEOF_UINT64_T
+#else
+typedef unsigned long rb_serial_t;
+# define SERIALT2NUM ULONG2NUM
+# define PRI_SERIALT_PREFIX PRI_LONG_PREFIX
+# define SIZEOF_SERIAL_T SIZEOF_LONG
+#endif
+
+#endif /* INTERNAL_SERIAL_H */