TP Lex and Yacc Version 3.0a [May 92] Sources
Copyright (c) 1990-92 by Albert Graef, Schillerstr. 18,
6509 Schornsheim/Germany (ag@muwiinfa.geschichte.uni-mainz.de)
All rights reserved
NO WARRANTY: The sources are provided as is. The author is not liable for
any errors in the source modules or any damages or other consequences of
their use. There also is no warranty that the programs fit any particular
purpose.
The TP Lex and Yacc programs consist of 23 modules with about 11000 lines
of code. A short description of each of the source modules is given below.
To compile TP Lex and Yacc, you need Turbo Pascal 6.0 (may also work with
Turbo Pascal 5.0/5.5, but I have not tested it). Compile the following
four source files using the built-in make function of Turbo Pascal (or tpc
command line option /M), with I/O checking turned off (compiler directive
$I- or tpc command line option /$I-). (Also, you will usually turn the
debugging options ($D and $L) off.)
- LEXLIB.PAS
- YACCLIB.PAS
- LEX.PAS
- YACC.PAS
You then have a running version of TP Lex and Yacc. The source file of
the TP Yacc parser and main program (which is implemented with TP Yacc
itself) is contained in YACC.Y. This file may be fed into TP Yacc to
generate the YACC.PAS file. To bootstrap TP Yacc, once you have a
YACC.EXE, you can recompile YACC.Y with TP Yacc as follows:
yacc yacc myyacc
Then try:
fc yacc.pas myyacc.pas
The two files should not differ.
Description of the Source Modules
---------------------------------
LEX PAS TP Lex main program
LEXBASE PAS base module (global declarations)
LEXDFA PAS DFA construction algorithm
LEXLIB PAS TP Lex library unit
LEXLIST PAS listing operations
LEXMSGS PAS messages and error handling
LEXOPT PAS DFA optimization algorithm
LEXPOS PAS operations to construct the position table
LEXRULES PAS parser for TP Lex grammar rules
LEXTABLE PAS internal tables used by the TP Lex program
YACC PAS TP Yacc parser and main program
YACC Y TP Yacc source for YACC.PAS
YACCBASE PAS base module (global
| 
Albert Graef