tmg.6

莱昂氏UNIX源代码分析UNIXv6src.tar.gz

.th TMG VI 10/21/72
.sh NAME
tmg \*- compiler-compiler
.sh SYNOPSIS
.bd tmg
name
.sh DESCRIPTION
.it Tmg
produces a translator for the language whose parsing
and translation rules are described in file \fIname\fB.t\fR.
The new translator appears
in a.out and may be used thus:
.s3
.bd a.out
input [ output ]
.s3
Except in rare cases input must be a randomly
addressable file.
If no output file is specified, the standard output file
is assumed.
.sh FILES
.nf
\fIname\fB.s\fR: assembly language version of \fIname\fB.t\fR
/usr/lib/tmg: the compiler-compiler
/usr/lib/tmg[abc], /lib/libs.a: libraries
alloc.d: scratch file for table storage
.fi
.sh "SEE ALSO"
A Manual for the Tmg Compiler-writing Language,
internal memorandum.
.sh DIAGNOSTICS
Syntactic errors result in "???" followed by the
offending line.
.br
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.
.sh AUTHOR
M. D. McIlroy
.sh BUGS
Footnote 1 of Section 9.2 of Tmg Manual is not enforced,
causing trouble.
.br
Restrictions (7.) against mixing bundling primitives
should be lifted.
.br
Certain hidden reserved words exist: gpar, classtab, trans,
goto, alt, salt.
.br
Octal digits include 8=10 and 9=11.