jeremy@acadch.UUCP (Jeremy Tammik) (02/23/90)
Hi everybody,
could somebody please send me a Yacc grammar for the HPGL
plotter language? Thank you! Hints on using it efficiently
to parse & convert & understand HPGL would also be appreciated.
Jeremy
# Jeremy Tammik # Autodesk AG # CH-4133 Pratteln, Switzerland # :-) #
# {sun|uunet}!acad!acadch!jeremy # jeremy@acadch.UUCP # cernvax!acadch!jeremy #zmact61@doc.ic.ac.uk (D Spinellis) (02/26/90)
In article <1239@acadch.UUCP> jeremy@acadch.UUCP (Jeremy Tammik) writes: >could somebody please send me a Yacc grammar for the HPGL >plotter language? Thank you! /* Commands needing 0, 1, 2 and 4 arguments */ %token tCOM0 tCOM1 tCOM2 tCOM4 %token tTERMINATOR tARG %start command_file %% command_file : /* Empty */ | command_file command ; command : tCOM0 tTERMINATOR | tCOM1 tARG tTERMINATOR | tCOM2 tARG tARG tTERMINATOR | tCOM4 tARG tARG tARG tARG tTERMINATOR ; %% >Hints on using it efficiently >to parse & convert & understand HPGL would also be appreciated. DON'T USE IT. HPGL can be parsed very easily by a finite state machine. Using yacc to parse it is an overkill. All commands are two characters long and are terminated by a special character. You can determine the number of arguments a command uses by counting argument separators until you encounter the command terminator. Diomidis -- Diomidis Spinellis Internet: dds@cc.ic.ac.uk Department of Computing UUCP: ...!ukc!iccc!dds Imperial College JANET: dds@uk.ac.ic.cc London SW7 2BZ #include "/dev/tty"
woody@rpp386.cactus.org (Woodrow Baker) (02/27/90)
In article <1239@acadch.UUCP>, jeremy@acadch.UUCP (Jeremy Tammik) writes: > Hi everybody, > > could somebody please send me a Yacc grammar for the HPGL > plotter language? Thank you! Hints on using it efficiently > to parse & convert & understand HPGL would also be appreciated. > > Jeremy > # Jeremy Tammik # Autodesk AG # CH-4133 Pratteln, Switzerland # :-) # > # {sun|uunet}!acad!acadch!jeremy # jeremy@acadch.UUCP # cernvax!acadch!jeremy # ME TOO. Cheers Woody