DIRECTORYCommander USING [CommandProc, Register],CommandTool USING [ArgumentVector, Failed, Parse],FS USING [Error, StreamOpen],IO USING [STREAM, PutF, PutRope, rope],ArpaLex822,Rope USING [ROPE, Cat, Length, Equal];ArpaTestLex: CEDAR PROGRAMIMPORTS Commander, CommandTool, FS, IO, Rope, ArpaLex822= BEGINLexMessage: Commander.CommandProc = {argv: CommandTool.ArgumentVector = CommandTool.Parse[cmd !CommandTool.Failed => {cmd.out.PutRope[errorMsg]; GOTO GoAway}];file: IO.STREAM _ FS.StreamOpen[argv[1] !FS.Error => {cmd.out.PutRope[error.explanation]; GOTO GoAway}];token, whiteSpace: Rope.ROPE;tokType: ArpaLex822.TokenType;DOtoken _ ArpaLex822.LexFieldName[file].fieldName;IF Rope.Equal[token, "\n"] THEN ERRORELSE IF token.Length[] = 0 THEN EXIT;cmd.out.PutRope[token.Cat["\n"]];DO[token, whiteSpace, tokType] _ ArpaLex822.LexToken[file];IF tokType = errorTok THEN cmd.out.PutRope["** Error **\n "];cmd.out.PutF["\"%h\", \"%h\"\n", IO.rope[whiteSpace], IO.rope[token]];IF tokType = EOLTok THEN EXIT;ENDLOOP;ENDLOOP;EXITSGoAway => NULL};Commander.Register["ArpaLex822", LexMessage, "Do a lexical analysis of a message (in a file)."];END.    ·  ArpaTestLex.mesa, test program for ArpaLex822.Last edited by Nichols.pa, June 7, 1983 4:55 pmLast Edited by: Taft, September 13, 1983 10:41 amLast edited by HGM, February 27, 1984 9:29:38 pm PSTJohn Larson, October 10, 1987 6:09:12 pm PDT Э╩╚  Ш headЪЬ.Щ.IbodyЩ/LЩ1LЪЬ╧kЬЭЩ4LЪЬ,Щ,code2ЪЭ	Ш	MЪЬ
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