Re: Are compiler developers light-years ahead of other software development?

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From	Kaz Kylheku <480-992-1380@kylheku.com>
Newsgroups	comp.compilers
Subject	Re: Are compiler developers light-years ahead of other software development?
Date	Sun, 23 Jan 2022 06:17:36 -0000 (UTC)
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On 2022-01-22, Ian Lance Taylor <ianlancetaylor@gmail.com> wrote:
> In my experience bison/yacc parsers are really good for knowing the exact
> language that you are parsing.

In my experience, you can easily know what language you're processing
with Yacc is if you avoid its /ad hoc/ features for suppressing conflict
messages. Namely:

- %left, %right and %nonassoc declarations for tokens.

- %prec in rules.

Otherwise, you're likely going to be relying on your regression test
cases to inform you what language you're parsing.

The exception is that %left, %right are readily understood if they are
only used for the operator tokens in the productions for a binary
operator expression grammar (that likely being their motivating use case).

--
TXR Programming Language: http://nongnu.org/txr
Cygnal: Cygwin Native Application Library: http://kylheku.com/cygnal

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Are compiler developers light-years ahead of other software development? Roger L Costello <costello@mitre.org> - 2022-01-16 14:36 +0000
  Re: Are compiler developers light-years ahead of other software development? Philipp Klaus Krause <pkk@spth.de> - 2022-01-16 22:13 +0100
  Re: Are compiler developers light-years ahead of other software development? gah4 <gah4@u.washington.edu> - 2022-01-17 07:14 -0800
  Re: Are compiler developers light-years ahead of other software development? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2022-01-19 21:33 +0000
  Re: Are compiler developers light-years ahead of other software development? Kaz Kylheku <480-992-1380@kylheku.com> - 2022-01-22 03:01 +0000
    Re: Are compiler developers light-years ahead of other software development? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2022-01-22 10:43 +0000
      Re: Are compiler developers light-years ahead of other software development? Kaz Kylheku <480-992-1380@kylheku.com> - 2022-01-22 21:38 +0000
    Re: Are compiler developers light-years ahead of other software development? Roger L Costello <costello@mitre.org> - 2022-01-22 12:50 +0000
      Re: Are compiler developers light-years ahead of other software development? Kaz Kylheku <480-992-1380@kylheku.com> - 2022-01-22 21:22 +0000
      Re: Are compiler developers light-years ahead of other software development? Ian Lance Taylor <ianlancetaylor@gmail.com> - 2022-01-22 15:40 -0800
        Re: Are compiler developers light-years ahead of other software development? Kaz Kylheku <480-992-1380@kylheku.com> - 2022-01-23 06:17 +0000

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