4.3BSD-UWisc/man/cat1/pi.1

PI(1)               UNIX Programmer's Manual                PI(1)



NAME
     pi - Pascal interpreter code translator

SYNOPSIS
     pi [ option ] [ -i name ...  ] name.p

DESCRIPTION
     _P_i translates the program in the file _n_a_m_e._p leaving inter-
     preter code in the file _o_b_j in the current directory.  The
     interpreter code can be executed using _p_x. _P_i_x performs the
     functions of _p_i and _p_x for `load and go' Pascal.

     The following flags are interpreted by _p_i; the associated
     options can also be controlled in comments within the pro-
     gram as described in the _B_e_r_k_e_l_e_y _P_a_s_c_a_l _U_s_e_r'_s _M_a_n_u_a_l.

     -b    Block buffer the file _o_u_t_p_u_t.

     -i    Enable the listing for any specified procedures and
           functions and while processing any specified include
           files.

     -l    Make a program listing during translation.

     -n    Begin each listed include file on a new page with a
           banner line.

     -p    Suppress the post-mortem control flow backtrace if an
           error occurs; suppress statement limit counting.

     -s    Accept standard Pascal only; non-standard constructs
           cause warning diagnostics.

     -t    Suppress runtime tests of subrange variables and treat
           assert statements as comments.

     -u    Card image mode; only the first 72 characters of input
           lines are used.

     -w    Suppress warning diagnostics.

     -z    Allow execution profiling with _p_x_p by generating
           statement counters, and arranging for the creation of
           the profile data file _p_m_o_n._o_u_t when the resulting
           object is executed.

FILES
     file.p                   input file
     file.i                   include file(s)
     /usr/lib/pi2.*strings         text of the error messages
     /usr/lib/how_pi*         basic usage explanation
     obj                 interpreter code output



Printed 12/27/86         April 29, 1985                         1






PI(1)               UNIX Programmer's Manual                PI(1)



SEE ALSO
     Berkeley Pascal User's Manual
     pix(1), px(1), pxp(1), pxref(1)

DIAGNOSTICS
     For a basic explanation do

             pi

     In the diagnostic output of the translator, lines containing
     syntax errors are listed with a flag indicating the point of
     error.  Diagnostic messages indicate the action which the
     recovery mechanism took in order to be able to continue
     parsing.  Some diagnostics indicate only that the input is
     `malformed.' This occurs if the recovery can find no simple
     correction to make the input syntactically valid.

     Semantic error diagnostics indicate a line in the source
     text near the point of error.  Some errors evoke more than
     one diagnostic to help pinpoint the error; the follow-up
     messages begin with an ellipsis `...'.

     The first character of each error message indicates its
     class:

               E         Fatal error; no code will be generated.
               e         Non-fatal error.
               w         Warning - a potential problem.
               s         Non-standard Pascal construct warning.

     If a severe error occurs which inhibits further processing,
     the translator will give a diagnostic and then `QUIT'.

AUTHORS
     Charles B. Haley, William N. Joy, and Ken Thompson
     Ported to VAX-11 by Peter Kessler

BUGS
     The keyword packed is recognized but has no effect.

     For clarity, semantic errors should be flagged at an
     appropriate place in the source text, and multiple instances
     of the `same' semantic error should be summarized at the end
     of a procedure or function rather than evoking many diagnos-
     tics.

     When include files are present, diagnostics relating to the
     last procedure in one file may appear after the beginning of
     the listing of the next.






Printed 12/27/86         April 29, 1985                         2