355 lines
14 KiB
EmacsLisp
355 lines
14 KiB
EmacsLisp
;;; ob-clojure.el --- Babel Functions for Clojure -*- lexical-binding: t; -*-
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;; Copyright (C) 2009-2024 Free Software Foundation, Inc.
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;; Author: Joel Boehland, Eric Schulte, Oleh Krehel, Frederick Giasson
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;; Maintainer: Daniel Kraus <daniel@kraus.my>
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;;
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;; Keywords: literate programming, reproducible research
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;; URL: https://orgmode.org
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Support for evaluating Clojure / ClojureScript code.
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;; Requirements:
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;; - Clojure (at least 1.2.0)
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;; - clojure-mode
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;; - babashka, nbb, Clojure CLI tools, Cider, inf-clojure or SLIME
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;; For clojure-mode, see https://github.com/clojure-emacs/clojure-mode
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;; For babashka, see https://github.com/babashka/babashka
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;; For nbb, see https://github.com/babashka/nbb
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;; For Clojure CLI tools, see https://clojure.org/guides/deps_and_cli
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;; For Cider, see https://github.com/clojure-emacs/cider
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;; For inf-clojure, see https://github.com/clojure-emacs/inf-clojure
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;; For SLIME, see https://slime.common-lisp.dev
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;; For SLIME, the best way to install its components is by following
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;; the directions as set out by Phil Hagelberg (Technomancy) on the
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;; web page: https://technomancy.us/126
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;;; Code:
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(require 'org-macs)
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(org-assert-version)
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(require 'ob)
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(declare-function cider-current-connection "ext:cider-client" (&optional type))
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(declare-function cider-current-ns "ext:cider-client" ())
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(declare-function inf-clojure "ext:inf-clojure" (cmd))
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(declare-function inf-clojure-cmd "ext:inf-clojure" (project-type))
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(declare-function inf-clojure-eval-string "ext:inf-clojure" (code))
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(declare-function inf-clojure-project-type "ext:inf-clojure" ())
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(declare-function nrepl-dict-get "ext:nrepl-client" (dict key))
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(declare-function nrepl-sync-request:eval "ext:nrepl-client" (input connection &optional ns tooling))
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(declare-function sesman-start-session "ext:sesman" (system))
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(declare-function slime-eval "ext:slime" (sexp &optional package))
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(defvar cider-buffer-ns)
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(defvar org-babel-tangle-lang-exts)
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(add-to-list 'org-babel-tangle-lang-exts '("clojure" . "clj"))
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(add-to-list 'org-babel-tangle-lang-exts '("clojurescript" . "cljs"))
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(defvar org-babel-default-header-args:clojure '())
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(defvar org-babel-header-args:clojure
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'((ns . :any)
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(package . :any)
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(backend . ((inf-clojure cider slime babashka nbb)))))
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(defvar org-babel-default-header-args:clojurescript '())
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(defvar org-babel-header-args:clojurescript '((package . :any)))
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(defcustom org-babel-clojure-backend (cond
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((executable-find "bb") 'babashka)
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((executable-find "clojure") 'clojure-cli)
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((featurep 'cider) 'cider)
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((featurep 'inf-clojure) 'inf-clojure)
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((featurep 'slime) 'slime)
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(t nil))
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"Backend used to evaluate Clojure code blocks."
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:group 'org-babel
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:package-version '(Org . "9.7")
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:type '(choice
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(const :tag "babashka" babashka)
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(const :tag "clojure-cli" clojure-cli)
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(const :tag "cider" cider)
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(const :tag "inf-clojure" inf-clojure)
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(const :tag "slime" slime)
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(const :tag "Not configured yet" nil)))
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(defcustom org-babel-clojurescript-backend
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(cond
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((or (executable-find "nbb") (executable-find "npx")) 'nbb)
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((featurep 'cider) 'cider)
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(t nil))
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"Backend used to evaluate ClojureScript code blocks."
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:group 'org-babel
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:package-version '(Org . "9.7")
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:type '(choice
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(const :tag "nbb" nbb)
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(const :tag "cider" cider)
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(const :tag "Not configured yet" nil)))
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(defcustom org-babel-clojure-default-ns "user"
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"Default Clojure namespace for source block when finding ns failed."
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:type 'string
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:group 'org-babel)
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(defcustom ob-clojure-babashka-command (executable-find "bb")
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"Babashka command used by the Clojure `babashka' backend."
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:type '(choice file (const nil))
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:group 'org-babel
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:package-version '(Org . "9.6"))
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(defcustom ob-clojure-nbb-command (or (executable-find "nbb")
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(when-let* ((npx (executable-find "npx")))
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(concat npx " nbb")))
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"Nbb command used by the ClojureScript `nbb' backend."
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:type '(choice string (const nil))
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:group 'org-babel
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:package-version '(Org . "9.7"))
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(defcustom ob-clojure-cli-command (when-let* ((cmd (executable-find "clojure")))
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(concat cmd " -M"))
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"Clojure CLI command used by the Clojure `clojure-cli' backend."
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:type '(choice string (const nil))
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:group 'org-babel
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:package-version '(Org . "9.7"))
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(defun org-babel-expand-body:clojure (body params &optional cljs-p)
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"Expand BODY according to PARAMS, return the expanded body.
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When CLJS-P is non-nil, expand in a cljs context instead of clj."
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(let* ((vars (org-babel--get-vars params))
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(backend-override (cdr (assq :backend params)))
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(org-babel-clojure-backend
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(cond
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(backend-override (intern backend-override))
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(org-babel-clojure-backend org-babel-clojure-backend)
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(t (user-error "You need to customize `org-babel-clojure-backend'
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or set the `:backend' header argument"))))
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(ns (or (cdr (assq :ns params))
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(if (eq org-babel-clojure-backend 'cider)
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(or cider-buffer-ns
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(let ((repl-buf (cider-current-connection)))
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(and repl-buf (buffer-local-value
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'cider-buffer-ns repl-buf))))
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org-babel-clojure-default-ns)))
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(result-params (cdr (assq :result-params params)))
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(print-level nil)
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(print-length nil)
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(body (org-trim
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(concat
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;; Source block specified namespace :ns.
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(and (cdr (assq :ns params)) (format "(ns %s)\n" ns))
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;; Variables binding.
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(if (null vars) (org-trim body)
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;; Remove comments, they break (let [...] ...) bindings
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(let ((body (replace-regexp-in-string "^[ ]*;+.*$" "" body)))
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(format "(let [%s]\n%s)"
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(mapconcat
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(lambda (var)
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(format "%S '%S" (car var) (cdr var)))
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vars
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"\n ")
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body)))))))
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;; If the result param is set to "output" we don't have to do
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;; anything special and just let the backend handle everything
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(if (member "output" result-params)
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body
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;; If the result is not "output" (i.e. it's "value"), disable
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;; stdout output and print the last returned value. Use pprint
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;; instead of prn when results param is "pp" or "code".
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(concat
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(if (or (member "code" result-params)
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(member "pp" result-params))
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(concat (if cljs-p
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"(require '[cljs.pprint :refer [pprint]])"
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"(require '[clojure.pprint :refer [pprint]])")
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" (pprint ")
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"(prn ")
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(if cljs-p
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"(binding [cljs.core/*print-fn* (constantly nil)]"
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"(binding [*out* (java.io.StringWriter.)]")
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body "))"))))
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(defvar ob-clojure-inf-clojure-filter-out)
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(defvar ob-clojure-inf-clojure-tmp-output)
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(defun ob-clojure-inf-clojure-output (s)
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"Store a trimmed version of S in a variable and return S."
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(let ((s0 (org-trim
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(replace-regexp-in-string
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ob-clojure-inf-clojure-filter-out "" s))))
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(push s0 ob-clojure-inf-clojure-tmp-output))
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s)
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(defmacro ob-clojure-with-temp-expanded (expanded params &rest body)
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"Run BODY on EXPANDED code block with PARAMS."
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(declare (debug (body)) (indent 2))
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`(with-temp-buffer
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(insert ,expanded)
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(goto-char (point-min))
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(while (not (looking-at "\\s-*\\'"))
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(let* ((beg (point))
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(end (progn (forward-sexp) (point)))
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(exp (org-babel-expand-body:clojure
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(buffer-substring beg end) ,params)))
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(sit-for .1)
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,@body))))
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(defsubst ob-clojure-string-or-list (l)
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"Convert list L into a string or a list of list."
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(if (and (listp l) (= (length l) 1))
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(car l)
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(mapcar #'list l)))
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(defvar inf-clojure-buffer)
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(defvar comint-prompt-regexp)
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(defvar inf-clojure-comint-prompt-regexp)
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(defun ob-clojure-eval-with-inf-clojure (expanded params)
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"Evaluate EXPANDED code block with PARAMS using inf-clojure."
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(org-require-package 'inf-clojure)
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;; Maybe initiate the inf-clojure session
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(unless (and inf-clojure-buffer
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(buffer-live-p (get-buffer inf-clojure-buffer)))
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(save-window-excursion
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(let* ((alias (cdr (assq :alias params)))
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(cmd0 (inf-clojure-cmd (inf-clojure-project-type)))
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(cmd (if alias (replace-regexp-in-string
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"clojure" (format "clojure -A%s" alias)
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cmd0)
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cmd0)))
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(setq-local
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org-babel-comint-prompt-regexp-fallback comint-prompt-regexp
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comint-prompt-regexp inf-clojure-comint-prompt-regexp)
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(funcall-interactively #'inf-clojure cmd)
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(goto-char (point-max))))
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(sit-for 1))
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;; Now evaluate the code
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(setq ob-clojure-inf-clojure-filter-out
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(concat "^nil\\|nil$\\|\\s-*"
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(or (cdr (assq :ns params))
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org-babel-clojure-default-ns)
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"=>\\s-*"))
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(add-hook 'comint-preoutput-filter-functions
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#'ob-clojure-inf-clojure-output)
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(setq ob-clojure-inf-clojure-tmp-output nil)
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(ob-clojure-with-temp-expanded expanded nil
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(inf-clojure-eval-string exp))
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(sit-for .5)
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(remove-hook 'comint-preoutput-filter-functions
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#'ob-clojure-inf-clojure-output)
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;; And return the result
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(ob-clojure-string-or-list
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(delete nil
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(mapcar
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(lambda (s)
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(unless (or (equal "" s)
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(string-match-p "^Clojure" s))
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s))
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(reverse ob-clojure-inf-clojure-tmp-output)))))
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(defun ob-clojure-eval-with-cider (expanded _params &optional cljs-p)
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"Evaluate EXPANDED code block using cider.
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When CLJS-P is non-nil, use a cljs connection instead of clj.
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The PARAMS from Babel are not used in this function."
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(org-require-package 'cider "Cider")
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(let ((connection (cider-current-connection (if cljs-p "cljs" "clj"))))
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(unless connection (sesman-start-session 'CIDER))
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(if (not connection)
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;; Display in the result instead of using `user-error'
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"Please reevaluate when nREPL is connected"
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(let ((response (nrepl-sync-request:eval expanded connection)))
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(or (nrepl-dict-get response "root-ex")
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(nrepl-dict-get response "ex")
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(nrepl-dict-get response "out"))))))
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(defun ob-clojure-eval-with-slime (expanded params)
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"Evaluate EXPANDED code block with PARAMS using slime."
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(org-require-package 'slime "SLIME")
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(with-temp-buffer
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(insert expanded)
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(slime-eval
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`(swank:eval-and-grab-output
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,(buffer-substring-no-properties (point-min) (point-max)))
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(cdr (assq :package params)))))
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(defun ob-clojure-eval-with-cmd (cmd expanded)
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"Evaluate EXPANDED code block using CMD (babashka, clojure or nbb)."
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(let ((script-file (org-babel-temp-file "clojure-cmd-script-" ".clj")))
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(with-temp-file script-file
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(insert expanded))
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(org-babel-eval
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(format "%s %s" cmd (org-babel-process-file-name script-file))
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"")))
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(defun org-babel-execute:clojure (body params &optional cljs-p)
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"Execute the BODY block of Clojure code with PARAMS using Babel.
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When CLJS-P is non-nil, execute with a ClojureScript backend
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instead of Clojure."
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(let* ((backend-override (cdr (assq :backend params)))
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(org-babel-clojure-backend
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(cond
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(backend-override (intern backend-override))
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(org-babel-clojure-backend (if cljs-p
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org-babel-clojurescript-backend
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org-babel-clojure-backend))
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(t (user-error "You need to customize `%S'
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or set the `:backend' header argument"
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(if cljs-p
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org-babel-clojurescript-backend
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org-babel-clojure-backend)))))
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;; We allow a Clojure source block to be evaluated with the
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;; nbb backend and therefore have to expand the body with
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;; ClojureScript syntax when we either evaluate a
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;; ClojureScript source block or use the nbb backend.
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(cljs-p (or cljs-p (eq org-babel-clojure-backend 'nbb))))
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(let* ((expanded (org-babel-expand-body:clojure body params cljs-p))
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(result-params (cdr (assq :result-params params)))
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result)
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(setq result
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(cond
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((eq org-babel-clojure-backend 'inf-clojure)
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(ob-clojure-eval-with-inf-clojure expanded params))
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((eq org-babel-clojure-backend 'clojure-cli)
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(ob-clojure-eval-with-cmd ob-clojure-cli-command expanded))
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((eq org-babel-clojure-backend 'babashka)
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(ob-clojure-eval-with-cmd ob-clojure-babashka-command expanded))
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((eq org-babel-clojure-backend 'nbb)
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(ob-clojure-eval-with-cmd ob-clojure-nbb-command expanded))
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((eq org-babel-clojure-backend 'cider)
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(ob-clojure-eval-with-cider expanded params cljs-p))
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((eq org-babel-clojure-backend 'slime)
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(ob-clojure-eval-with-slime expanded params))
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(t (user-error "Invalid backend"))))
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(org-babel-result-cond result-params
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result
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(condition-case nil (org-babel-script-escape result)
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(error result))))))
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(defun org-babel-execute:clojurescript (body params)
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"Evaluate BODY with PARAMS as ClojureScript code."
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(org-babel-execute:clojure body params t))
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(provide 'ob-clojure)
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;;; ob-clojure.el ends here
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