Sorry, I was working on the emacs git repo, which seems to be a bit behind
the org mode one.
Please find patch attached.
On Sat, May 23, 2020 at 4:02 PM Bastien <b...@gnu.org> wrote:
> Hi Roland,
>
> Roland Coeurjoly <rolandcoeurj...@gmail.com> writes:
>
> > I have done a clean clone and I still don't see a 9.4 section in
> > master.
> > Is it in another branch?
>
> It is here in the master branch:
>
> https://code.orgmode.org/bzg/org-mode/src/master/etc/ORG-NEWS#L13
>
> --
> Bastien
>
From 4d8660eea35ea13809914271562f0ff73507f967 Mon Sep 17 00:00:00 2001
From: Roland Coeurjoly <rolandcoeurj...@gmail.com>
Date: Sat, 23 May 2020 16:46:26 +0200
Subject: [PATCH 1/1] ob-haskell: introduce :compile header argument
* lisp/ob-haskell (org-babel-haskell-compiler):
(org-babel-header-args:haskell): new variables.
(org-babel-haskell-execute):
(org-babel-haskell-interpret): new functions.
(org-babel-execute:haskell): use new functions.
---
etc/ORG-NEWS | 6 ++++
lisp/ob-haskell.el | 80 +++++++++++++++++++++++++++++++++++++++++++---
2 files changed, 81 insertions(+), 5 deletions(-)
diff --git a/etc/ORG-NEWS b/etc/ORG-NEWS
index f8bddb613..21c5e3d71 100644
--- a/etc/ORG-NEWS
+++ b/etc/ORG-NEWS
@@ -453,6 +453,12 @@ equations producing inconsistent output. New option
~org-html-equation-reference-format~ sets the command used in HTML
export.
+*** ob-haskell: add support for compilation with :compile header argument
+
+By default, Haskell blocks are interpreted. By adding ~:compile yes~
+to a Haskell source block, it will be compiled, executed and
+the results will be displayed.
+
* Version 9.3
** Incompatible changes
diff --git a/lisp/ob-haskell.el b/lisp/ob-haskell.el
index bea162528..466344ac0 100644
--- a/lisp/ob-haskell.el
+++ b/lisp/ob-haskell.el
@@ -23,12 +23,13 @@
;;; Commentary:
-;; Org-Babel support for evaluating haskell source code. This one will
-;; be sort of tricky because haskell programs must be compiled before
+;; Org Babel support for evaluating Haskell source code.
+;; Haskell programs must be compiled before
;; they can be run, but haskell code can also be run through an
;; interactive interpreter.
;;
-;; For now lets only allow evaluation using the haskell interpreter.
+;; By default we evaluate using the Haskell interpreter.
+;; To use the compiler, specify :compile yes in the header.
;;; Requirements:
@@ -45,6 +46,7 @@
(declare-function run-haskell "ext:inf-haskell" (&optional arg))
(declare-function inferior-haskell-load-file
"ext:inf-haskell" (&optional reload))
+(declare-function org-entry-get "org" (pom property &optional inherit literal-nil))
(defvar org-babel-tangle-lang-exts)
(add-to-list 'org-babel-tangle-lang-exts '("haskell" . "hs"))
@@ -58,8 +60,66 @@
(defvar haskell-prompt-regexp)
-(defun org-babel-execute:haskell (body params)
- "Execute a block of Haskell code."
+(defcustom org-babel-haskell-compiler "ghc"
+ "Command used to compile a Haskell source code file into an executable.
+May be either a command in the path, like \"ghc\"
+or an absolute path name, like \"/usr/local/bin/ghc\".
+The command can include a parameter, such as \"ghc -v\""
+ :group 'org-babel
+ :package-version '(Org "9.4")
+ :type 'string)
+
+(defconst org-babel-header-args:haskell '(compile . :any)
+ "Haskell-specific header arguments.")
+
+(defun org-babel-haskell-execute (body params)
+ "This function should only be called by `org-babel-execute:haskell'"
+ (let* ((tmp-src-file (org-babel-temp-file
+ "Haskell-src-"
+ ".hs"))
+ (tmp-bin-file
+ (org-babel-process-file-name
+ (org-babel-temp-file "Haskell-bin-" org-babel-exeext)))
+ (cmdline (cdr (assq :cmdline params)))
+ (cmdline (if cmdline (concat " " cmdline) ""))
+ (flags (cdr (assq :flags params)))
+ (flags (mapconcat #'identity
+ (if (listp flags)
+ flags
+ (list flags)) " "))
+ (libs (org-babel-read
+ (or (cdr (assq :libs params))
+ (org-entry-get nil "libs" t))
+ nil))
+ (libs (mapconcat #'identity
+ (if (listp libs) libs (list libs))
+ " ")))
+ (with-temp-file tmp-src-file (insert body))
+ (org-babel-eval
+ (format "%s -o %s %s %s %s"
+ org-babel-haskell-compiler
+ tmp-bin-file
+ flags
+ (org-babel-process-file-name tmp-src-file)
+ libs)
+ "")
+ (let ((results
+ (org-babel-eval
+ (concat tmp-bin-file cmdline) "")))
+ (when results
+ (setq results (org-trim (org-remove-indentation results)))
+ (org-babel-reassemble-table
+ (org-babel-result-cond (cdr (assq :result-params params))
+ (org-babel-read results t)
+ (let ((tmp-file (org-babel-temp-file "Haskell-")))
+ (with-temp-file tmp-file (insert results))
+ (org-babel-import-elisp-from-file tmp-file)))
+ (org-babel-pick-name
+ (cdr (assq :colname-names params)) (cdr (assq :colnames params)))
+ (org-babel-pick-name
+ (cdr (assq :rowname-names params)) (cdr (assq :rownames params))))))))
+
+(defun org-babel-interpret-haskell (body params)
(require 'inf-haskell)
(add-hook 'inferior-haskell-hook
(lambda ()
@@ -94,6 +154,14 @@
(org-babel-pick-name (cdr (assq :rowname-names params))
(cdr (assq :rowname-names params))))))
+
+(defun org-babel-execute:haskell (body params)
+ "Execute a block of Haskell code."
+ (let ((compile (string= "yes" (cdr (assq :compile params)))))
+ (if (not compile)
+ (org-babel-interpret-haskell body params)
+ (org-babel-haskell-execute body params))))
+
(defun org-babel-haskell-initiate-session (&optional _session _params)
"Initiate a haskell session.
If there is not a current inferior-process-buffer in SESSION
@@ -213,4 +281,6 @@ constructs (header arguments, no-web syntax etc...) are ignored."
(provide 'ob-haskell)
+
+
;;; ob-haskell.el ends here
--
2.20.1
