Fix definitions with metadata not being index by imenu

CHANGELOG.md

@@ -6,6 +6,7 @@
 - [#46]: Fix missing `comment-add` variable in `clojure-ts-mode-variables` mentioned in [#26]
 - Add imenu support for `deftest` definitions.
 - [#53]: Let `clojure-ts-mode` derive from `clojure-mode` for Emacs 30+.
+- [#42]: Fix imenu support for definitions with metadata.
 
 ## 0.2.2 (2024-02-16)
 

clojure-ts-mode.el

@@ -520,6 +520,10 @@ with the markdown_inline grammar."
   "Return non-nil if NODE is a Clojure keyword."
   (string-equal "kwd_lit" (treesit-node-type node)))
 
+(defun clojure-ts--metadata-node-p (node)
+  "Return non-nil if NODE is a Clojure metadata node."
+  (string-equal "meta_lit" (treesit-node-type node)))
+
 (defun clojure-ts--named-node-text (node)
   "Gets the name of a symbol or keyword NODE.
 This does not include the NODE's namespace."
@@ -530,6 +534,11 @@ This does not include the NODE's namespace."
   (and (clojure-ts--symbol-node-p node)
        (string-equal expected-symbol-name (clojure-ts--named-node-text node))))
 
+(defun clojure-ts--node-child-skip-metadata (node n)
+  "Return the Nth child of NODE like `treesit-node-child`, skipping the optional metadata node at pos 0 if present."
+  (let ((first-child (treesit-node-child node 0 t)))
+    (treesit-node-child node (if (clojure-ts--metadata-node-p first-child) (1+ n) n) t)))
+
 (defun clojure-ts--symbol-matches-p (symbol-regexp node)
   "Return non-nil if NODE is a symbol that matches SYMBOL-REGEXP."
   (and (clojure-ts--symbol-node-p node)
@@ -550,7 +559,7 @@ like \"defn\".
 See `clojure-ts--definition-node-p' when an exact match is possible."
   (and
    (clojure-ts--list-node-p node)
-   (let* ((child (treesit-node-child node 0 t))
+   (let* ((child (clojure-ts--node-child-skip-metadata node 0))
           (child-txt (clojure-ts--named-node-text child)))
      (and (clojure-ts--symbol-node-p child)
           (string-match-p definition-type-regexp child-txt)))))
@@ -565,8 +574,8 @@ that a node is a definition is intended to be done elsewhere.
 
 Can be called directly, but intended for use as `treesit-defun-name-function'."
   (when (and (clojure-ts--list-node-p node)
-             (clojure-ts--symbol-node-p (treesit-node-child node 0 t)))
-    (let ((sym (treesit-node-child node 1 t)))
+             (clojure-ts--symbol-node-p (clojure-ts--node-child-skip-metadata node 0)))
+    (let ((sym (clojure-ts--node-child-skip-metadata node 1)))
       (when (clojure-ts--symbol-node-p sym)
         ;; Extracts ns and name, and recreates the full var name.
         ;; We can't just get the node-text of the full symbol because

test/clojure-ts-mode-imenu-test.el

@@ -0,0 +1,38 @@
+;;; clojure-ts-mode-util-test.el --- Clojure TS Mode: util test suite  -*- lexical-binding: t; -*-
+
+;; Copyright © 2022-2024 Danny Freeman
+
+;; This file is not part of GNU Emacs.
+
+;; 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:
+
+;; The unit test suite of Clojure TS Mode
+
+(require 'clojure-ts-mode)
+(require 'buttercup)
+(require 'imenu)
+
+
+(describe "clojure-ts-mode imenu integration"
+  (it "should index def with meta data"
+    (with-clojure-ts-buffer "^{:foo 1}(def a 1)"
+      (expect (imenu--in-alist "a" (imenu--make-index-alist))
+              :not :to-be nil)))
+
+  (it "should index defn with meta data"
+    (with-clojure-ts-buffer "^{:foo 1}(defn a [])"
+      (expect (imenu--in-alist "a" (imenu--make-index-alist))
+              :not :to-be nil))))