<> <> <> <> <> DIRECTORY Rope USING [Fetch, MakeRope, ROPE, Size], TextNode, TEditDocumentRope USING []; TEditDocumentRopeImpl: CEDAR PROGRAM IMPORTS Rope, TextNode EXPORTS TEditDocumentRope = BEGIN Fetch: PROC [data: REF, index: INT] RETURNS [CHAR] = { doc: TextNode.Ref _ NARROW[data]; loc: TextNode.Location = TextNode.LocRelative[[doc,0], index]; n: TextNode.RefTextNode = TextNode.NarrowToTextNode[loc.node]; IF n=NIL THEN ERROR; IF loc.where >= Rope.Size[n.rope] THEN RETURN ['\n]; RETURN [Rope.Fetch[n.rope, loc.where]] }; Create: PUBLIC PROC [doc: TextNode.Ref] RETURNS [r: Rope.ROPE] = { docSize: INT = TextNode.LocOffset[[doc,0], TextNode.LastLocWithin[doc]]; RETURN[Rope.MakeRope[base: doc, size: docSize, fetch: Fetch]]; }; END.