DIRECTORY Rope, TextNode, TEditDocumentRope; TEditDocumentRopeImpl: CEDAR PROGRAM IMPORTS TextNode, Rope EXPORTS TEditDocumentRope SHARES Rope = BEGIN ObjectRope: TYPE = object node Rope.RopeRep; Create: PUBLIC PROC [doc: TextNode.Ref] RETURNS [r: Rope.ROPE] = { docSize: INT = TextNode.LocOffset[[doc,0], TextNode.LastLocWithin[doc]]; RETURN [NEW[ObjectRope _ [node[object[docSize,doc,Fetch,NIL,NIL]]]]] }; 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]] }; END. €-- TEditDocumentRopeImpl.Mesa -- written by Bill Paxton. March 31, 1983 -- last written by Paxton. March 31, 1983 9:22 am Ê9˜JšÏcœ™Jš)™)Jš1™1J˜šÏk ˜ J˜Jšœ ˜ Jšœ˜J˜—šœžœž˜$Jšžœ˜Jšžœ˜Jšžœž˜—J˜Jšœ žœ˜,J˜šÏnœž œžœ žœ˜BJšœ žœ<˜HJšžœžœ-žœžœ˜G—J˜š Ÿœžœžœ žœžœžœ˜6Jšœžœ˜!J˜>J˜>Jšžœžœžœžœ˜Jšžœ žœžœ˜4Jšžœ#˜)—J˜Jšžœ˜J˜J˜—…—ò«