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From: Alan Schmitt <alan.schmitt@polytechnique.org>
To: Eric Schulte <schulte.eric@gmail.com>
Cc: emacs-orgmode <emacs-orgmode@gnu.org>
Subject: Re: I need help extending ob-ocaml to support :results output
Date: Wed, 26 Mar 2014 22:39:53 +0100	[thread overview]
Message-ID: <m21txozljq.fsf@polytechnique.org> (raw)
In-Reply-To: <87vbv4gxzl.fsf@gmail.com> (Eric Schulte's message of "Sun, 23 Mar 2014 19:50:54 -0600")

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Hello,

Here is a patch that allows for the output of ocaml babel blocks to be
captured. It also makes the parsing of the resulting value more robust:
results of type "string list" are now converted to a table, for
instance.

At the moment I only check for results of the form "verbatim" or
"output" (before this patch, only "verbatim" was possible). Results of
kind "value" are parsed as before (converted to a string, a number,
a table, or left as-is).

Please don't hesitate to suggest improvements, to the code or to the
Changelog.

Thanks,

Alan


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From bcc2fc7ae0e4d099481af229a79b06ae9a160f14 Mon Sep 17 00:00:00 2001
From: Alan Schmitt <alan.schmitt@polytechnique.org>
Date: Wed, 26 Mar 2014 22:23:53 +0100
Subject: [PATCH] ob-ocaml.el: Clean up babel evaluation of ocaml blocks

* ob-ocaml.el (org-babel-execute:ocaml): Capture the output, type, and
value when evaluating ocaml blocks. Return the one requested by
`results'.

(org-babel-ocaml-parse-output): Change the signature to take a type
and a value. Make the parsing of the type more robust.
---
 lisp/ob-ocaml.el | 55 +++++++++++++++++++++++++++++++------------------------
 1 file changed, 31 insertions(+), 24 deletions(-)

diff --git a/lisp/ob-ocaml.el b/lisp/ob-ocaml.el
index 1f29a25..b7ef2d1 100644
--- a/lisp/ob-ocaml.el
+++ b/lisp/ob-ocaml.el
@@ -79,16 +79,24 @@
 					 (progn (setq out nil) line)
 				       (when (string-match re line)
 					 (progn (setq out t) nil))))
-				   (mapcar #'org-babel-trim (reverse raw))))))))
+				   (mapcar #'org-babel-trim (reverse raw)))))))
+	 (raw (org-babel-trim clean))
+	 (result-params (cdr (assoc :result-params params)))
+	 (parsed 
+	  (string-match 
+	   "\\(\\(.*\n\\)*\\)[^:\n]+ : \\([^=\n]+\\) =\\(\n\\| \\)\\(.+\\)$" 
+	   raw))
+	 (output (match-string 1 raw))
+	 (type (match-string 3 raw))
+	 (value (match-string 5 raw))
+	 )
     (org-babel-reassemble-table
-     (let ((raw (org-babel-trim clean))
-	   (result-params (cdr (assoc :result-params params))))
-       (org-babel-result-cond result-params
-	 ;; strip type information from output unless verbatim is specified
-	 (if (and (not (member "verbatim" result-params))
-		  (string-match "= \\(.+\\)$" raw))
-	     (match-string 1 raw) raw)
-	 (org-babel-ocaml-parse-output raw)))
+     (org-babel-result-cond result-params
+       (cond
+	((member "verbatim" result-params) raw)
+	((member "output" result-params) output)
+	(t raw))
+       (org-babel-ocaml-parse-output value type))
      (org-babel-pick-name
       (cdr (assoc :colname-names params)) (cdr (assoc :colnames params)))
      (org-babel-pick-name
@@ -121,21 +129,20 @@
       (concat "[|" (mapconcat #'org-babel-ocaml-elisp-to-ocaml val "; ") "|]")
     (format "%S" val)))
 
-(defun org-babel-ocaml-parse-output (output)
-  "Parse OUTPUT.
-OUTPUT is string output from an ocaml process."
-  (let ((regexp "[^:]+ : %s = \\(.+\\)$"))
-    (cond
-     ((string-match (format regexp "string") output)
-      (org-babel-read (match-string 1 output)))
-     ((or (string-match (format regexp "int") output)
-          (string-match (format regexp "float") output))
-      (string-to-number (match-string 1 output)))
-     ((string-match (format regexp "list") output)
-      (org-babel-ocaml-read-list (match-string 1 output)))
-     ((string-match (format regexp "array") output)
-      (org-babel-ocaml-read-array (match-string 1 output)))
-     (t (message "don't recognize type of %s" output) output))))
+(defun org-babel-ocaml-parse-output (value type)
+  "Parse VALUE of type TYPE.
+VALUE and TYPE are string output from an ocaml process."
+  (cond
+   ((string= "string" type)
+    (org-babel-read value))
+   ((or (string= "int" type)
+	(string= "float" type))
+    (string-to-number value))
+   ((string-match "list" type)
+    (org-babel-ocaml-read-list value))
+   ((string-match "array" type)
+    (org-babel-ocaml-read-array value))
+   (t (message "don't recognize type %s" type) value)))
 
 (defun org-babel-ocaml-read-list (results)
   "Convert RESULTS into an elisp table or string.
-- 
1.8.5.3


  parent reply	other threads:[~2014-03-26 21:40 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-21 16:35 I need help extending ob-ocaml to support :results output Alan Schmitt
2014-03-24  1:50 ` Eric Schulte
2014-03-24 12:45   ` Alan Schmitt
2014-03-26 21:39   ` Alan Schmitt [this message]
2014-03-29 11:07     ` Alan Schmitt
2014-03-29 11:26       ` Bastien
2014-03-29 14:03       ` Nicolas Goaziou
2014-03-29 18:23         ` Alan Schmitt
2014-03-29 18:43           ` Nicolas Goaziou
2014-03-29 18:52             ` Alan Schmitt
2014-03-29 19:08               ` Nicolas Goaziou

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