TMG(VI) 10/21/72 TMG(VI)





TMG(VI)                     10/21/72                      TMG(VI)







NAME

     tmg - compiler-compiler



SYNOPSIS

     tmg name



DESCRIPTION

     Tmg produces a translator for the language whose parsing and

     translation  rules  are  described  in file name.t.  The new

     translator appears in a.out and may be used thus:



     a.out input [ output ]



     Except in rare cases input must be  a  randomly  addressable

     file.   If  no output file is specified, the standard output

     file is assumed.



FILES

     name.s: assembly language version of name.t

     /usr/lib/tmg: the compiler-compiler

     /usr/lib/tmg[abc], /lib/libs.a: libraries

     alloc.d: scratch file for table storage



SEE ALSO

     A Manual for the  Tmg  Compiler-writing  Language,  internal

     memorandum.



DIAGNOSTICS

     Syntactic errors result in "???" followed by  the  offending

     line.

     Situations  such  as  space  overflow  with  which  the  Tmg

     processor or a Tmg-produced processor can not cope result in

     a descriptive comment and a dump.



AUTHOR

     M. D. McIlroy



BUGS

     Footnote 1 of Section 9.2 of Tmg  Manual  is  not  enforced,

     causing trouble.

     Restrictions (7.) against mixing bundling primitives  should

     be lifted.

     Certain hidden reserved words exist: gpar, classtab,  trans,

     goto, alt, salt.

     Octal digits include 8=10 and 9=11.
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