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;;; jao-clojure.el --- Clojure utilities -*- lexical-binding: t; -*-
;; Copyright (C) 2025 Jose Antonio Ortega Ruiz
;; Author: Jose Antonio Ortega Ruiz <mail@jao.io>
;; Keywords: languages
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Helpers for clojure coding
;;; Code:
(require 'clojure-mode)
(require 'project)
(require 'cider-test)
(require 'jao-skel)
;;;; Jumping between implementation and test files
(defun jao-clojure--ext-dir (prefix)
(let* ((ext (file-name-extension buffer-file-name))
(ext-rx (format "/%s/" ext)))
(if (string-match-p ext-rx buffer-file-name)
(format "%s/%s" prefix ext)
prefix)))
(defun jao-clojure-find-current-test ()
(save-excursion
(and (re-search-backward
"(deftest\\(?:\\W+^:\\w+\\)*\\W+\\b\\(.+\\)\\b" nil t)
(match-string-no-properties 1))))
(defvar jao-clojure--src-candidates '("lib" "src" "srv" "app"))
(defun jao-clojure--test-namespace-p (ns)
(or (string-suffix-p "-test" ns)
(string-match "\\(.+\\)\\.\\(test\\)\\(\\..+\\)" ns)))
(defun jao-clojure-test-buffer-p ()
(jao-clojure--test-namespace-p (clojure-find-ns)))
(defun jao-clojure--test-for (namespace sep)
(replace-regexp-in-string "\\." sep (cider-test-default-test-ns-fn namespace)))
(defun jao-clojure--infer-test-ns (ns)
(if (jao-clojure--test-namespace-p ns)
ns
(jao-clojure--test-for ns ".")))
(defun jao-clojure--root () (project-root (project-current)))
(defun jao-clojure-jump-to-test ()
"Jump from implementation to test file."
(interactive)
(let* ((f (format "%s/%s/%s.%s"
(jao-clojure--root)
"test"
(jao-clojure--test-for (clojure-find-ns) "/")
(file-name-extension buffer-file-name)))
(f (replace-regexp-in-string "-" "_" f)))
(find-file f)))
(defun jao-clojure--implementation-for (namespace)
(thread-last (replace-regexp-in-string "-test$" "" namespace)
(replace-regexp-in-string "\\.test\\." ".")
(replace-regexp-in-string "-" "_")
(replace-regexp-in-string "\\." "/")
(substring-no-properties)))
(defun jao-clojure--find-implementation (src)
(let ((f (format "%s%s/%s.%s"
(jao-clojure--root)
src
(jao-clojure--implementation-for (clojure-find-ns))
(file-name-extension buffer-file-name))))
(and (file-exists-p f) f)))
(defun jao-clojure-jump-to-implementation ()
"Jump from test file to implementation."
(interactive)
(let ((impl (car (seq-keep #'jao-clojure--find-implementation
jao-clojure--src-candidates))))
(if impl (find-file impl) (message "No implementation file found"))))
(defun jao-clojure-other-file ()
"Toggle between implementation and test file"
(interactive)
(if (jao-clojure-test-buffer-p)
(jao-clojure-jump-to-implementation)
(jao-clojure-jump-to-test)))
(defun jao-clojure--setup-compilation (&optional ns)
;; (set (make-local-variable 'compile-command) (jao-clojure--test-str ns))
)
;;;; Skeletons
(defconst jao-clojure--ns-destruct-rx
(format "\\(?:%s\\|tests?\\)\\.\\(?:clj[cs]?\\.\\)?\\(.+\\)"
(regexp-opt jao-clojure--src-candidates)))
(defun jao-clojure-buffer-namespace ()
(let* ((ddir (jao-compilation-root))
(mbase (and ddir
(concat (replace-regexp-in-string "/" "." ddir) ".")))
(mbase (and mbase
(string-match jao-clojure--ns-destruct-rx mbase)
(match-string 1 mbase))))
(concat (or mbase "")
(replace-regexp-in-string "_" "-" (jao-skel-basename)))))
(defvar jao-clojure--test-check-lines
(concat "[clojure.test.check :as tc]\n "
"[clojure.test.check.generators :as gen]\n "
"[clojure.test.check.properties :as prop :include-macros true]\n"))
(defun jao-clojure--cljs-test-reqs (prefix-cmp last-cmp test-check)
(concat " (:require [cljs.test :as t :refer-macros [is deftest async]]"
"\n [" prefix-cmp "." last-cmp " :as " last-cmp "])"))
(defun jao-clojure--clj-test-reqs (prefix-cmp last-cmp test-check)
(format "(:use clojure.test)\n (:require %s(%s [%s :as %s]))"
(if test-check
(concat "(clojure.test.check [clojure-test :refer [defspec]])\n"
jao-clojure--test-check-lines)
"")
prefix-cmp last-cmp last-cmp))
(defun jao-clojure--cljc-test-reqs (prefix-cmp last-cmp test-check)
(concat "(:require #?(:clj [clojure.test :as t :refer [is deftest]]\n"
" :cljs [cljs.test :as t :refer-macros [is deftest]])\n"
(when test-check
(concat " [clojure.test.check-clojure-test #?@("
":cljs [:refer-macros [defspec]]\n"
":clj [:refer [defspec]))]\n"
jao-clojure--test-check-lines))
" [" prefix-cmp "." last-cmp " :as " last-cmp "])"))
(defun jao-clojure--skel-ns-contents (ns)
(if (jao-clojure--test-namespace-p ns)
(let ((test-check (y-or-n-p "Include test.check requires? "))
(ns (concat (match-string 1 ns) (match-string 3 ns))))
(let* ((cmps (split-string ns "\\."))
(last-cmp (car (last cmps)))
(prefix-cmp (mapconcat 'identity (butlast cmps) "."))
(ext (file-name-extension buffer-file-name)))
(cond ((string= "cljs" ext)
(jao-clojure--cljs-test-reqs prefix-cmp last-cmp test-check))
((string= "cljc" ext)
(jao-clojure--cljc-test-reqs prefix-cmp last-cmp test-check))
((string= "clj" ext)
(jao-clojure--clj-test-reqs prefix-cmp last-cmp test-check)))))
(format "%S" (read-string "Brief module description: "))))
(define-skeleton jao-clojure-skeleton
"Standard Clojure module file skeleton"
""
(jao-skel-copyright-line ";; ")
\n
(jao-skel-author-line ";; Author: ")
(jao-skel-date-line ";; Start date: ")
\n '(setq v1 (jao-clojure-buffer-namespace))
_ "(ns " v1
'(jao-clojure--setup-compilation v1)
\n (jao-clojure--skel-ns-contents v1) ")"
\n
'(ignore-errors (indent-region (region-beginning) (region-end)))
> -)
(jao-skel-install "\\.clj[sc]?$" 'jao-clojure-skeleton)
(provide 'jao-clojure)
;;; jao-clojure.el ends here
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