p2c.doc

又一个Pascal 到C的转换器

NAME
    p2c	- Pascal to C translator

SYNOPSIS
    p2c < foo.pas > foo.c

DESCRIPTION
    p2c converts many Pascal structures to their C equivalent.
    The Pascal source can be in upper, lower, or mixed case; case is
    preserved during translation.

    Structures translated properly include simple assignment
    and comparison statments, variable, type, and label declarations, 
    enumerated types, and procedure and function declarations and instances.

    Structures NOT translated properly include sets, constant declarations,
    variant records, files, subrange types, VAR parameters, CASE, FOR, 
    WITH, READ, and WRITE statements, and nested procedures.

    The translator provides hints about untranslated regions by inserting
    UPPERCASE messages enclosed with /* and */ into the translated source.
    Error messages are of the form /***# Expected ... ***/.

    Human massaging of the output will certainly be needed.
    In fact, you may want to modify the keyword translation table
    to better translate your particular variant of Pascal.

IMPLEMENTATION
    Written in C for Sun UNIX workstations; ought to compile on other 
    systems without change...
    Some of the translation is done with a keyword table, but most of
    the work is done by a recursive-descent parser.

BUGS
    Not well tested.
    Error recovery is very poor- the first error in translation inside
    the recursive-descent section will result in a very long stream of
    error messages.
    Some of the bread-and-butter structures of Pascal- like CASE and FOR-
    are not translated properly, although it would be easy to extend
    the parser to understand them.

    I welcome bug reports, and invite anyone interested to implement
    more PASCAL structures; I probably won't work on it much, because
    I don't use Pascal these days.

VERSION
    This version by Daniel Kegel <[e-mail]> or <seismo!rochester!srs!dan>,
    25 March 87.
    Based on a program by James A Mullens  <[e-mail]>  29-Jan-87
    which was in turn based on two nearly identical programs by Robert Heller  
    (1 Feb 1985) and Rick Walker <[e-mail]> (8 Sep 1986)
    which were reportedly derived from a similar program in the Feb 85 Byte
    which did a C TO PASCAL conversion.