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Annotation of 43BSDReno/pgrm/pascal/pi/pi.1, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1980, 1990 The Regents of the University of California.
        !             2: .\" All rights reserved.
        !             3: .\"
        !             4: .\" Redistribution and use in source and binary forms are permitted provided
        !             5: .\" that: (1) source distributions retain this entire copyright notice and
        !             6: .\" comment, and (2) distributions including binaries display the following
        !             7: .\" acknowledgement:  ``This product includes software developed by the
        !             8: .\" University of California, Berkeley and its contributors'' in the
        !             9: .\" documentation or other materials provided with the distribution and in
        !            10: .\" all advertising materials mentioning features or use of this software.
        !            11: .\" Neither the name of the University nor the names of its contributors may
        !            12: .\" be used to endorse or promote products derived from this software without
        !            13: .\" specific prior written permission.
        !            14: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            15: .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            16: .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            17: .\"
        !            18: .\"     @(#)pi.1       6.2 (Berkeley) 6/11/90
        !            19: .\"
        !            20: .Dd June 11, 1990
        !            21: .Dt PI 1
        !            22: .UC
        !            23: .Sh NAME
        !            24: .Nm pi
        !            25: .Nd Pascal interpreter code translator
        !            26: .Sh SYNOPSIS
        !            27: .Nm pi
        !            28: .Op Fl blnpstuwz
        !            29: .Op Fl i Ar name ...
        !            30: .Ar name.p
        !            31: .Sh DESCRIPTION
        !            32: .Nm Pi
        !            33: translates the program in the file
        !            34: .Ar name.p
        !            35: leaving interpreter code in the file
        !            36: .Pa obj
        !            37: in the current directory.
        !            38: The interpreter code can be executed using
        !            39: .Nm px .
        !            40: .Nm Pix
        !            41: performs the functions of
        !            42: .Nm pi
        !            43: and
        !            44: .Nm px
        !            45: for `load and go' Pascal.
        !            46: .Pp
        !            47: The following flags are interpreted by
        !            48: .Nm pi ;
        !            49: the associated options can also be controlled in comments within the program
        !            50: as described in the
        !            51: .Em "Berkeley Pascal User's Manual."
        !            52: .Tw Fl
        !            53: .Tp Fl b
        !            54: Block buffer the file
        !            55: .Ar output .
        !            56: .Tp Fl i
        !            57: Enable the listing for
        !            58: any specified procedures and functions and while processing any specified
        !            59: .Ic include
        !            60: files.
        !            61: .Tp Fl l
        !            62: Make a program listing during translation.
        !            63: .Tp Fl n
        !            64: Begin each listed
        !            65: .Ic include
        !            66: file on a new page with a banner line.
        !            67: .Tp Fl p
        !            68: Suppress the post-mortem control flow backtrace
        !            69: if an error occurs;
        !            70: suppress statement limit counting.
        !            71: .Tp Fl s
        !            72: Accept standard Pascal only;
        !            73: non-standard constructs cause warning diagnostics.
        !            74: .Tp Fl t
        !            75: Suppress runtime tests of subrange variables and treat
        !            76: .Ic assert
        !            77: statements as comments.
        !            78: .Tp Fl u
        !            79: Card image mode;
        !            80: only the first 72 characters of input lines are used.
        !            81: .Tp Fl w
        !            82: Suppress warning diagnostics.
        !            83: .Tp Fl z
        !            84: Allow execution profiling with
        !            85: .Nm pxp
        !            86: by generating statement counters, and arranging for the
        !            87: creation of the profile data file
        !            88: .Pa pmon.out
        !            89: when the resulting object is executed.
        !            90: .Tp
        !            91: .Sh FILES
        !            92: .Dw /usr/lib/pi1.*strings
        !            93: .Di L
        !            94: .Dp Pa file.p
        !            95: input file
        !            96: .Dp Pa file.i
        !            97: include file(s)
        !            98: .Dp Pa /usr/lib/pi2.*strings
        !            99: text of the error messages
        !           100: .Dp Pa /usr/lib/how_pi*
        !           101: basic usage explanation
        !           102: .Dp Pa obj
        !           103: interpreter code output
        !           104: .Dp
        !           105: .Sh SEE ALSO
        !           106: .Em Berkeley Pascal User'.Xr s Manual
        !           107: .br
        !           108: .Xr pix 1 ,
        !           109: .Xr px 1 ,
        !           110: .Xr pxp 1 ,
        !           111: .Xr pxref 1
        !           112: .Sh DIAGNOSTICS
        !           113: For a basic explanation do
        !           114: .Pp
        !           115: .Df I
        !           116: .Nm pi
        !           117: .De
        !           118: .Pp
        !           119: In the diagnostic output of the translator,
        !           120: lines containing syntax errors are listed with a flag indicating the
        !           121: point of error.
        !           122: Diagnostic messages indicate the action which the recovery mechanism
        !           123: took in order to be able to continue parsing.
        !           124: Some diagnostics indicate only that the input is `malformed.'
        !           125: This occurs if the recovery can find no simple correction to make the input
        !           126: syntactically valid.
        !           127: .Pp
        !           128: Semantic error diagnostics indicate a line in the source text near the
        !           129: point of error.
        !           130: Some errors evoke more than one diagnostic to help pinpoint the error;
        !           131: the follow-up messages begin with an ellipsis `...'.
        !           132: .Pp
        !           133: .ne 8
        !           134: The first character of each error message indicates its class:
        !           135: .Pp
        !           136: .Dw Fl
        !           137: .Di L
        !           138: .Dp Li E
        !           139: Fatal error; no code will be generated.
        !           140: .Dp e
        !           141: Non-fatal error.
        !           142: .Dp w
        !           143: Warning \- a potential problem.
        !           144: .Dp s
        !           145: Non-standard Pascal construct warning.
        !           146: .Dp
        !           147: .Pp
        !           148: If a severe error occurs which inhibits further processing,
        !           149: the translator will give a diagnostic and then `QUIT'.
        !           150: .Sh AUTHORS
        !           151: Charles B. Haley, William N. Joy, and Ken Thompson
        !           152: .br
        !           153: Ported to VAX-11 by Peter Kessler
        !           154: .Sh BUGS
        !           155: The keyword
        !           156: .Ic packed
        !           157: is recognized but has no effect.
        !           158: .Pp
        !           159: For clarity,
        !           160: semantic errors should be flagged at an appropriate place in the source text,
        !           161: and multiple instances of the `same' semantic error should be summarized
        !           162: at the end of a
        !           163: .Ic procedure
        !           164: or
        !           165: .Ic function
        !           166: rather than evoking many diagnostics.
        !           167: .Pp
        !           168: When
        !           169: .Ic include
        !           170: files are present,
        !           171: diagnostics relating to the last procedure in one file may appear after the
        !           172: beginning of the listing of the next.
        !           173: .\" .Sh ENVIRONMENT
        !           174: .Sh HISTORY
        !           175: .Nm Pi
        !           176: appeared in 3 BSD.

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