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[smlnj] View of /sml/trunk/src/cm/semant/sharing.sml
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View of /sml/trunk/src/cm/semant/sharing.sml

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Revision 388 - (download) (annotate)
Mon Jul 26 02:45:07 1999 UTC (21 years, 4 months ago) by blume
File size: 580 byte(s)
sharing.sml added
(*
 * Module-level value-sharing in CM.
 *
 * (C) 1999 Lucent Technologies, Bell Laboratories
 *
 * Author: Matthias Blume (blume@kurims.kyoto-u.ac.jp)
 *)
structure Sharing = struct

    (* the "request" corresponds to the class specified in the .cm file *)
    datatype request = PRIVATE | SHARED | DONTCARE

    (* the "mode" (i.e., what CM actually uses) is determined by
     * taking both "request" and the modes of predecessors in the
     * dependency graph into account. *)
    datatype mode =
	SHARE of bool			(* true: warn if sharing is broken *)
      | DONTSHARE
end

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