unofficial mirror of guix-patches@gnu.org 
 help / color / mirror / code / Atom feed
From: Robert Vollmert <rob@vllmrt.net>
To: 35859@debbugs.gnu.org
Subject: [bug#35859] fixes bug in patch 0003
Date: Fri, 24 May 2019 16:56:30 +0200	[thread overview]
Message-ID: <C0591D21-753C-498F-91FC-D874B7DEAE61@vllmrt.net> (raw)
In-Reply-To: <72F268CC-5FB7-421C-B6F7-B47EAAB823C1@vllmrt.net>

[-- Attachment #1: Type: text/plain, Size: 128 bytes --]

Patch 0003 introduced a bug where descriptions with backslash characters were no longer parsed.
This is an updated version.


[-- Attachment #2: 0003-guix-import-cabal-parse-braced-description-propertie.patch --]
[-- Type: application/octet-stream, Size: 5240 bytes --]

From fd4786852510221c56a3eeba4ed41e11903a1438 Mon Sep 17 00:00:00 2001
From: Robert Vollmert <rob@vllmrt.net>
Date: Fri, 17 May 2019 14:26:36 +0200
Subject: [PATCH 03/13] guix: import: cabal: parse braced description
 properties

* guix/import/cabal.scm: generalize property bracing to both
                         layouted and simple braced blocks
* guix/tests/hackage.scm: test braced description import
---
 guix/import/cabal.scm | 35 ++++++++++++++++++++++++++++-------
 tests/hackage.scm     | 22 ++++++++++++++++++++++
 2 files changed, 50 insertions(+), 7 deletions(-)

diff --git a/guix/import/cabal.scm b/guix/import/cabal.scm
index 13c2f3f48c..1a87be0b00 100644
--- a/guix/import/cabal.scm
+++ b/guix/import/cabal.scm
@@ -270,6 +270,10 @@ following lines with indentation larger than MIN-INDENT."
                 (peek-next-line-indent port)))
         val)))
 
+(define* (read-braced-value port)
+  "Read up to a closing brace."
+  (string-trim-both (read-delimited "}" port 'trim)))
+
 (define (lex-white-space port bol)
   "Consume white spaces and comment lines on PORT.  If a new line is started return #t,
 otherwise return BOL (beginning-of-line)."
@@ -343,8 +347,11 @@ matching a string against the created regexp."
                 (make-regexp pat))))
     (cut regexp-exec rx <>)))
 
-(define is-property (make-rx-matcher "([a-z0-9-]+)[ \t]*:[ \t]*(\\w?.*)$"
-                                     regexp/icase))
+(define is-layout-property (make-rx-matcher "([a-z0-9-]+)[ \t]*:[ \t]*(\\w?[^{}]*)$"
+                                            regexp/icase))
+
+(define is-braced-property (make-rx-matcher "([a-z0-9-]+)[ \t]*:[ \t]*\\{[ \t]*$"
+                                            regexp/icase))
 
 (define is-flag (make-rx-matcher "^flag +([a-z0-9_-]+)"
                                  regexp/icase))
@@ -435,13 +442,19 @@ string with the read characters."
                  (begin (unread-char c) (list->string res)))))
           (else (list->string res)))))
 
-(define (lex-property k-v-rx-res loc port)
+(define (lex-layout-property k-v-rx-res loc port)
   (let ((key (string-downcase (match:substring k-v-rx-res 1)))
         (value (match:substring k-v-rx-res 2)))
     (make-lexical-token
      'PROPERTY loc
      (list key `(,(read-value port value (current-indentation)))))))
 
+(define (lex-braced-property k-rx-res loc port)
+  (let ((key (string-downcase (match:substring k-rx-res 1))))
+    (make-lexical-token
+     'PROPERTY loc
+     (list key `(,(read-braced-value port))))))
+
 (define (lex-rx-res rx-res token loc)
   (let ((name (string-downcase (match:substring rx-res 1))))
     (make-lexical-token token loc name)))
@@ -552,7 +565,6 @@ LOC is the current port location."
 the current port location."
   (let* ((s (read-delimited "\n{}" port 'peek)))
     (cond
-     ((is-property s) => (cut lex-property <> loc port))
      ((is-flag s) => (cut lex-flag <> loc))
      ((is-src-repo s) => (cut lex-src-repo <> loc))
      ((is-exec s) => (cut lex-exec <> loc))
@@ -561,13 +573,22 @@ the current port location."
      ((is-benchmark s) => (cut lex-benchmark <> loc))
      ((is-lib s) (lex-lib loc))
      ((is-else s) (lex-else loc))
-     (else
-      #f))))
+     (else (unread-string s port) #f))))
+
+(define (lex-property port loc)
+  (let* ((s (read-delimited "\n" port 'peek)))
+    (cond
+      ((is-braced-property s) => (cut lex-braced-property <> loc port))
+      ((is-layout-property s) => (cut lex-layout-property <> loc port))
+      (else #f))))
 
 (define (lex-token port)
   (let* ((loc (make-source-location (cabal-file-name) (port-line port)
                                     (port-column port) -1 -1)))
-    (or (lex-single-char port loc) (lex-word port loc) (lex-line port loc))))
+    (or (lex-single-char port loc)
+        (lex-word port loc)
+        (lex-line port loc)
+        (lex-property port loc))))
 
 ;; Lexer- and error-function generators
 
diff --git a/tests/hackage.scm b/tests/hackage.scm
index 41cea73fe7..733d540c20 100644
--- a/tests/hackage.scm
+++ b/tests/hackage.scm
@@ -143,6 +143,24 @@ executable cabal
     mtl        >= 2.0      && < 3
 ")
 
+;; Check braces instead of layout
+(define test-cabal-8
+  "name: foo
+version: 1.0.0
+homepage: http://test.org
+synopsis: synopsis
+description: {
+first line
+second line
+}
+license: BSD3
+executable cabal
+  build-depends:
+    HTTP       >= 4000.2.5 && < 4000.3,
+    mtl        >= 2.0      && < 3
+")
+
+
 ;; A fragment of a real Cabal file with minor modification to check precedence
 ;; of 'and' over 'or', missing final newline, spaces between keywords and
 ;; parentheses and between key and column.
@@ -262,6 +280,10 @@ library
   (eval-test-with-cabal test-cabal-7
                         #:cabal-environment '(("impl" . "ghc-7.8"))))
 
+(test-assert "hackage->guix-package test 8"
+  (eval-test-with-cabal test-cabal-8
+                        #:cabal-environment '(("impl" . "ghc-7.8"))))
+
 (test-assert "read-cabal test 1"
   (match (call-with-input-string test-read-cabal-1 read-cabal)
     ((("name" ("test-me"))
-- 
2.21.0


  parent reply	other threads:[~2019-05-24 15:08 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-22 20:11 [bug#35859] [PATCH] hackage import: Setup.hs generation and revision support Robert Vollmert
2019-05-23  8:50 ` [bug#35859] line ending fix Robert Vollmert
2019-05-23 13:27 ` [bug#35859] fixed patch set, including test fixes Robert Vollmert
2019-05-24 14:56 ` Robert Vollmert [this message]
2019-05-24 14:58 ` [bug#35859] improves output in patch 0010 Robert Vollmert

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

  List information: https://guix.gnu.org/

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=C0591D21-753C-498F-91FC-D874B7DEAE61@vllmrt.net \
    --to=rob@vllmrt.net \
    --cc=35859@debbugs.gnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/guix.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).