;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017, 2020 Sergei Trofimovich <slyfox@inbox.ru>
;;; Copyright © 2021 Sergei Trofimovich <slyich@gmail.com>
;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu packages re2c)
  #:use-module (guix licenses)
  #:use-module (guix packages)
  #:use-module (gnu packages python)
  #:use-module (guix download)
  #:use-module (guix build-system gnu))

(define-public re2c
  (package
    (name "re2c")
    (version "2.2")
    (source (origin
             (method url-fetch)
             (uri (string-append "https://github.com/skvadrik/" name
                                 "/releases/download/" version "/"
                                 name "-" version ".tar.xz"))
             (sha256
              (base32
               "1nkbv3bxz1kwwql1pdlnj3lxy5h2vsaif393ivb5b9d8610mxi0g"))))
    (build-system gnu-build-system)
    (home-page "https://re2c.org/")
    (native-inputs
     (list python))             ; for the test driver
    (synopsis "Lexer generator for C/C++")
    (description
     "@code{re2c} generates minimalistic hard-coded state machine (as opposed
to full-featured table-based lexers).  Flexible API allows generated code
to be wired into virtually any environment.  Instead of exposing traditional
@code{yylex()} style API, re2c exposes its internals.  Be sure to take a look
at examples, they cover a lot of real-world cases and shed some light on dark
corners of re2c API.")
    (license public-domain)))
ix/log/tests/records.scm?id=61361ef2646cc59f18fd1d33d9d13348930255b7'>records.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/records.scm?id=61361ef2646cc59f18fd1d33d9d13348930255b7&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-01-16 18:30:57 +0100'>2020-01-16</span></td><td><a href='/guix/commit/tests/records.scm?id=47212fc763788660ff9051ccee1f6fa8a0db7bdd'>records: Improve reporting of "invalid field specifier" errors.</a><span class='msg-avail'>...<span class='msg-tooltip'>Previously users would just see:

  error: invalid field specifier

without source location or hints.

* guix/records.scm (expand): Add optional 'parent-form' parameter and
pass it to 'syntax-violation' when it is true.
(make-syntactic-constructor): Pass S as a third argument to
'report-invalid-field-specifier'.
* guix/ui.scm (report-load-error): For 'syntax-error', show SUBFORM or
FORM in the message.
* tests/records.scm ("define-record-type* &amp; wrong field specifier"): Add
a 'subform' parameter and adjust test accordingly.
("define-record-type* &amp; wrong field specifier, identifier"): New test.
* tests/guix-system.sh: Add test.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-03-30 11:08:39 +0100'>2019-03-30</span></td><td><a href='/guix/commit/tests/records.scm?id=d2be7e3c4ba8d6d0dde9b4c0bff623ab85637424'>records: Support custom 'this' identifiers.</a><span class='msg-avail'>...<span class='msg-tooltip'>This lets record users choose an identifier other than 'this-record'.

* guix/records.scm (make-syntactic-constructor): Add #:this-identifier.
[wrap-field-value]: Honor it.
(define-record-type*): Add form with extra THIS-IDENTIFIER and honor
it.
* tests/records.scm ("define-record-type* &amp; thunked &amp; inherit &amp; custom this"):
New test.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-03-25 23:37:06 +0100'>2019-03-25</span></td><td><a href='/guix/commit/tests/records.scm?id=abd4d6b33dba4de228e90ad15a8efb456fcf7b6e'>records: Allow thunked fields to refer to 'this-record'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/records.scm (this-record): New syntax parameter.
(make-syntactic-constructor)[wrap-field-value]: When F is thunked,
return a one-argument lambda instead of a thunk, and parameterize
THIS-RECORD.
(define-record-type*)[thunked-field-accessor-definition]: Pass X
to (real-get X).
* tests/records.scm ("define-record-type* &amp; thunked &amp; this-record")
("define-record-type* &amp; thunked &amp; default &amp; this-record")
("define-record-type* &amp; thunked &amp; inherit &amp; this-record"): New tests.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-01-22 23:04:05 +0100'>2019-01-22</span></td><td><a href='/guix/commit/tests/records.scm?id=c2dcff41c2e47f5f978f467864d5ed7829939884'>records: Detect duplicate field initializers.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/records.scm (report-duplicate-field-specifier): New procedure.
(make-syntactic-constructor): Call it.
* tests/records.scm ("define-record-type* &amp; duplicate initializers"):
New test.

Co-authored-by: Mark H Weaver &lt;mhw@netris.org&gt;
</span></span></td><td>Ludovic Courtès</td></tr>