diff options
Diffstat (limited to 'lisp/org/ob-haskell.el')
| -rw-r--r-- | lisp/org/ob-haskell.el | 86 |
1 files changed, 73 insertions, 13 deletions
diff --git a/lisp/org/ob-haskell.el b/lisp/org/ob-haskell.el index e004a3405e4..84e2d6c42bc 100644 --- a/lisp/org/ob-haskell.el +++ b/lisp/org/ob-haskell.el @@ -23,20 +23,19 @@ ;;; 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: -;; - haskell-mode :: http://www.iro.umontreal.ca/~monnier/elisp/#haskell-mode -;; -;; - inf-haskell :: http://www.iro.umontreal.ca/~monnier/elisp/#haskell-mode -;; -;; - (optionally) lhs2tex :: http://people.cs.uu.nl/andres/lhs2tex/ +;; - haskell-mode: http://www.iro.umontreal.ca/~monnier/elisp/#haskell-mode +;; - inf-haskell: http://www.iro.umontreal.ca/~monnier/elisp/#haskell-mode +;; - (optionally) lhs2tex: http://people.cs.uu.nl/andres/lhs2tex/ ;;; Code: (require 'ob) @@ -47,6 +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")) @@ -60,8 +60,63 @@ (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 () @@ -87,7 +142,7 @@ (org-babel-reassemble-table (let ((result (pcase result-type - (`output (mapconcat #'identity (reverse (cdr results)) "\n")) + (`output (mapconcat #'identity (reverse results) "\n")) (`value (car results))))) (org-babel-result-cond (cdr (assq :result-params params)) result (org-babel-script-escape result))) @@ -96,6 +151,13 @@ (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 @@ -215,6 +277,4 @@ constructs (header arguments, no-web syntax etc...) are ignored." (provide 'ob-haskell) - - ;;; ob-haskell.el ends here |