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View of /sml/branches/SMLNJ/src/cm/depend/ggraph.sml

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Revision 630 - (download) (annotate)
Wed Apr 26 18:40:56 2000 UTC (19 years, 5 months ago) by monnier
File size: 1220 byte(s)
*** empty log message ***
(*
 * Internal data structure representing a CM dependency graph.
 * (coarse-grain: groups)
 *
 * (C) 1999 Lucent Technologies, Bell Laboratories
 *
 * Author: Matthias Blume (blume@kurims.kyoto-u.ac.jp)
 *)
structure GroupGraph = struct

    type privileges = StringSet.set

    datatype kind =
	NOLIB
      | LIB of privileges		(* wrapped privileges *)
      | STABLELIB

    (* the "required" field includes everything:
     *   1. privileges required by subgroups
     *   2. newly required privileges
     *   3. privileges that would be wrapped once the group is stabilized
     *)
    datatype group =
	GROUP of { exports: DependencyGraph.impexp SymbolMap.map,
		   kind: kind,
		   required: privileges,
		   grouppath: SrcPath.t,
		   sublibs: (SrcPath.t * group) list }
    (* Note: "sublibs" consists of (srcpath, group) pairs where
     * srcpath is equivalent -- but not necessarily identical -- to
     * the "grouppath" component of "group".  The group might have
     * been known before in which case "grouppath" would carry the
     * path that was used back then to refer to the group.  But for
     * the purpose of stabilization we must know the abstract path
     * that was used this time. *)
end

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