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diff --git a/ipl/packs/tcll1/README b/ipl/packs/tcll1/README new file mode 100644 index 0000000..690d7c9 --- /dev/null +++ b/ipl/packs/tcll1/README @@ -0,0 +1,94 @@ + TCLL1 + The TCLL1 Parser Generator and Parser + (TC: "Tools of Computing") + +BUILD1.BAT MS-DOS batch file to compile TCLL1. It should be + able to execute as a shell script under UNIX. + +TCLL1.ICN main program for TCLL1 +LL1.ICN LL(1) parser generation routines +SCANGRAM.ICN scanner for input grammars +SEMGRAM.ICN semantics routines for handling the input grammars +TCLL1.GRM grammar for input grammars +TCLL1.LL1 translated input grammar for input grammars +GRAMANAL.ICN context-free grammar analysis module + +PARSELL1.ICN LL(1) parser +READLL1.ICN input routine for translated grammars +SEMSTK.ICN semantics routines called by PARSELL1.ICN to handle + the semantics stack + +RPTPERR.ICN routine to report syntax errors + +SEMOUT.ICN semantics routines just to write out the tokens and + action symbols (for early stages of debugging the + grammar) + + + Building the parser generator + +Before reading the rest of this description of TCLL1, you +should compile it on your own system. That will allow you to +try out the test grammars as they are discussed. + +If you do not have a copy of Icon, you can get it over the +Internet: ftp it from cs.arizona.edu: + ftp ftp.cs.arizona.edu + name: anonymous + password: your_e-mail_address + cd icon + +Versions of Icon for several machines are in subdirectories of +directory icon. You may also want to pick up the Icon +Programming Library. + +If you have the Icon Programming Library (IPL) installed on a +DOS/WINDOWS machine, you can execute the batch file +mktcll1.bat to build the parser generator. The three files from +the IPL that the parser generator uses are included with this +distribution and can be compiled separately. To build the +parser generator by hand, you may execute + + rem These are from the Icon Program Library: + + icont -c escape ebcdic xcode + + rem These form the parser generator proper + + icont -c gramanal ll1 semstk readll1 parsell1 scangram semgram + icont -fs tcll1 + +The first icont line compiles the files from the IPL. You may +omit the line if you have the IPL installed. The second icont +line compiles modules used by the parser generator. The third +line compiles the parser generator's main program. The flag -fs +tells the translator that the parser generator calls some +procedures by giving their names as strings. In Icon version 8, +this flag is not needed; in version 9 it is. + +To use TCLL1 to build a parsing table, execute + + Under Icon version 8: + + iconx tcll1 grammar.grm + + Under Icon version 9: + + tcll1 grammar.grm + +where grammar.grm is the grammar file. The output of the parser +generator will be encoded parse tables in file grammar.ll1 . If +you would also like a listing of the grammar and diagnostic +information, execute + + Under Icon version 8: + + iconx tcll1 -p grammar.grm + + Under Icon version 9: + + tcll1 -p grammar.grm + +Tlcll1 reads its own parsing table from file tcll1.ll1 which +must be in the current directory. + |