Parsing in Andrew


Andrew has a number of tools for generating parsers and assisting in
compilation.

Bison

    Bison is the parser generator provided by the Free Software
    Foundation.  The Andrew version supports a few additional switches
    and has improved error checking capabilities for reading grammars.  

    Documents installed in: $ANDREWDIR/doc/syntax/bison.*
    Source directory:  overhead/bision

Parser (C)

    This package processes Bison output to produce a C source file for a
    parser for a particular grammar.  The source file has unique names
    and multiple parses can be in progress simultaneously.  

    Documents installed in: $ANDREWDIR/doc/syntax/parser.doc
    Source directory:  overhead/mkparser

ParserClass (C++)

    The mkparserclass script processes Bison output to produce the .H
    and .C files for a C++ object which parses lexemes in the language
    described by the Bison input grammar.

    Documents installed in: $ANDREWDIR/doc/syntax/prsclass.doc
    Source directory:  atk/syntax/parser

Symbol Table (C++)

    Symbol table object. 

    Documents installed in: $ANDREWDIR/doc/syntax/sym.doc
    Source directory:  atk/syntax/sym

Token Scanner (C++)

    Gentlex, part of the tlex package, processes a set of lexeme
    descriptions and produces a token scanner for those lexemes.  The
    lexeme language is more limited than lex in that full regular
    expressions are not supported; however, the user can incorporate C
    routines to process the tail end of a tokern once the front end has
    been identified.  The entire scheme is integrated with Bison so
    there is little effort to generate the token numbers necessary. 

    Documents installed in: $ANDREWDIR/doc/syntax/tlex.doc
    Source directory:  atk/syntax/tlex