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clojure-ts-mode.el
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;;; clojure-ts-mode.el --- Major mode for Clojure code -*- lexical-binding: t; -*-
;; Copyright © 2022-2025 Danny Freeman, Bozhidar Batsov and contributors
;;
;; Authors: Danny Freeman <danny@dfreeman.email>
;; Bozhidar Batsov <bozhidar@batsov.dev>
;; Maintainer: Bozhidar Batsov <bozhidar@batsov.dev>
;; URL: http://github.com/clojure-emacs/clojure-ts-mode
;; Keywords: languages clojure clojurescript lisp
;; Version: 0.4.0-snapshot
;; Package-Requires: ((emacs "30.1"))
;; This file is not part of GNU Emacs.
;;; Commentary:
;; Provides font-lock, indentation, and navigation for the
;; Clojure programming language (http://clojure.org).
;; For the Tree-sitter grammar this mode is based on,
;; see https://github.com/sogaiu/tree-sitter-clojure.
;; Using clojure-ts-mode with paredit or smartparens is highly recommended.
;; Here are some example configurations:
;; ;; require or autoload paredit-mode
;; (add-hook 'clojure-ts-mode-hook #'paredit-mode)
;; ;; require or autoload smartparens
;; (add-hook 'clojure-ts-mode-hook #'smartparens-strict-mode)
;; See inf-clojure (http://github.com/clojure-emacs/inf-clojure) for
;; basic interaction with Clojure subprocesses.
;; See CIDER (http://github.com/clojure-emacs/cider) for
;; better interaction with subprocesses via nREPL.
;;; License:
;; 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 GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Code:
(require 'treesit)
(require 'align)
(require 'subr-x)
(declare-function treesit-parser-create "treesit.c")
(declare-function treesit-node-eq "treesit.c")
(declare-function treesit-node-type "treesit.c")
(declare-function treesit-node-parent "treesit.c")
(declare-function treesit-node-child "treesit.c")
(declare-function treesit-node-child-by-field-name "treesit.c")
(defgroup clojure-ts nil
"Major mode for editing Clojure code with Tree-sitter."
:prefix "clojure-ts-"
:group 'languages
:link '(url-link :tag "GitHub" "https://github.com/clojure-emacs/clojure-ts-mode")
:link '(emacs-commentary-link :tag "Commentary" "clojure-mode"))
(defconst clojure-ts-mode-version
"0.4.0-snapshot"
"The current version of `clojure-ts-mode'.")
(defcustom clojure-ts-comment-macro-font-lock-body nil
"Highlight the entire body of a comment macro as a comment.
When set to a non-nil value, applies the comment font-locking face to the entire
body of comment macros.
When nil (the default), the body of comment macros uses default font-locking
rules for whatever expressions are in the body, except for the comment symbol
itself."
:safe #'booleanp
:type 'boolean
:package-version '(clojure-ts-mode . "0.1.3"))
(defcustom clojure-ts-ensure-grammars t
"When non-nil, ensure required Tree-sitter grammars are installed."
:safe #'booleanp
:type 'boolean
:package-version '(clojure-ts-mode . "0.2.0"))
(defcustom clojure-ts-toplevel-inside-comment-form nil
"Eval top level forms inside comment forms instead of the comment form itself."
:type 'boolean
:safe #'booleanp
:package-version '(clojure-ts-mode . "0.2.1"))
(defcustom clojure-ts-docstring-fill-column fill-column
"Value of `fill-column' to use when filling a docstring."
:type 'integer
:safe #'integerp
:package-version '(clojure-ts-mode . "0.2.3"))
(defcustom clojure-ts-docstring-fill-prefix-width 2
"Width of `fill-prefix' when filling a docstring.
The default value conforms with the de facto convention for
Clojure docstrings, aligning the second line with the opening
double quotes on the third column."
:type 'integer
:safe #'integerp
:package-version '(clojure-ts-mode . "0.2.3"))
(defcustom clojure-ts-use-markdown-inline t
"When non-nil, use Markdown inline grammar for docstrings."
:type 'boolean
:safe #'booleanp
:package-version '(clojure-ts-mode . "0.2.3"))
(defcustom clojure-ts-use-regex-parser t
"When non-nil, use separate grammar to highlight regex syntax."
:type 'boolean
:safe #'booleanp
:package-version '(clojure-ts-mode . "0.4"))
(defcustom clojure-ts-auto-remap t
"When non-nil, redirect all `clojure-mode' buffers to `clojure-ts-mode'."
:safe #'booleanp
:type 'boolean
:package-version '(clojure-ts-mode . "0.3"))
(defcustom clojure-ts-outline-variant 'comments
"Determines how `clojure-ts-mode' integrates with `outline-minor-mode'.
If set to the symbol `comments', then top-level comments starting with
three or more semicolons will be treated as outline headings. If set to
`imenu', then def-like forms are treated as outline headings."
:safe #'symbolp
:type '(choice (const :tag "Use special comments" comments)
(const :tag "Use imenu" imenu))
:package-version '(clojure-ts-mode . "0.4"))
(defcustom clojure-ts-refactor-map-prefix "C-c C-r"
"Clojure refactor keymap prefix."
:type 'string
:package-version '(clojure-ts-mode . "0.4"))
(defcustom clojure-ts-align-reader-conditionals nil
"Whether to align reader conditionals, as if they were maps."
:package-version '(clojure-ts-mode . "0.4")
:safe #'booleanp
:type 'boolean)
(defcustom clojure-ts-align-binding-forms
'("let"
"when-let"
"when-some"
"if-let"
"if-some"
"binding"
"loop"
"doseq"
"for"
"with-open"
"with-local-vars"
"with-redefs"
"clojure.core/let"
"clojure.core/when-let"
"clojure.core/when-some"
"clojure.core/if-let"
"clojure.core/if-some"
"clojure.core/binding"
"clojure.core/loop"
"clojure.core/doseq"
"clojure.core/for"
"clojure.core/with-open"
"clojure.core/with-local-vars"
"clojure.core/with-redefs")
"List of strings matching forms that have binding forms."
:package-version '(clojure-ts-mode . "0.4")
:safe #'listp
:type '(repeat string))
(defconst clojure-ts--align-separator-newline-regexp "^ *$")
(defcustom clojure-ts-align-separator clojure-ts--align-separator-newline-regexp
"Separator passed to `align-region' when performing vertical alignment."
:package-version '(clojure-ts-mode . "0.4")
:type `(choice (const :tag "Make blank lines prevent vertical alignment from happening."
,clojure-ts--align-separator-newline-regexp)
(other :tag "Allow blank lines to happen within a vertically-aligned expression."
entire)))
(defcustom clojure-ts-align-cond-forms
'("condp"
"cond"
"cond->"
"cond->>"
"case"
"are"
"clojure.core/condp"
"clojure.core/cond"
"clojure.core/cond->"
"clojure.core/cond->>"
"clojure.core/case"
"clojure.core/are")
"List of strings identifying cond-like forms."
:package-version '(clojure-ts-mode . "0.4")
:safe #'listp
:type '(repeat string))
(defcustom clojure-ts-align-forms-automatically nil
"If non-nil, vertically align some forms automatically.
Automatically means it is done as part of indenting code. This applies
to binding forms (`clojure-ts-align-binding-forms'), to cond
forms (`clojure-ts-align-cond-forms') and to map literals. For
instance, selecting a map a hitting
\\<clojure-ts-mode-map>`\\[indent-for-tab-command]' will align the
values like this:
{:some-key 10
:key2 20}"
:package-version '(clojure-ts-mode . "0.4")
:safe #'booleanp
:type 'boolean)
(defvar clojure-ts-mode-remappings
'((clojure-mode . clojure-ts-mode)
(clojurescript-mode . clojure-ts-clojurescript-mode)
(clojurec-mode . clojure-ts-clojurec-mode))
"Alist of entries to `major-mode-remap-defaults'.
See also `clojure-ts-activate-mode-remappings' and
`clojure-ts-definition-docstring-symbols'.")
(defvar clojure-ts--debug nil
"Enables debugging messages, shows current node in mode-line.
Only intended for use at development time.")
(defvar clojure-ts-mode-syntax-table
(let ((table (make-syntax-table)))
;; Initialize ASCII charset as symbol syntax
(modify-syntax-entry '(0 . 127) "_" table)
;; Word syntax
(modify-syntax-entry '(?0 . ?9) "w" table)
(modify-syntax-entry '(?a . ?z) "w" table)
(modify-syntax-entry '(?A . ?Z) "w" table)
;; Whitespace
(modify-syntax-entry ?\s " " table)
(modify-syntax-entry ?\xa0 " " table) ; non-breaking space
(modify-syntax-entry ?\t " " table)
(modify-syntax-entry ?\f " " table)
;; Setting commas as whitespace makes functions like `delete-trailing-whitespace' behave unexpectedly (#561)
(modify-syntax-entry ?, "." table)
;; Delimiters
(modify-syntax-entry ?\( "()" table)
(modify-syntax-entry ?\) ")(" table)
(modify-syntax-entry ?\[ "(]" table)
(modify-syntax-entry ?\] ")[" table)
(modify-syntax-entry ?\{ "(}" table)
(modify-syntax-entry ?\} "){" table)
;; Prefix chars
(modify-syntax-entry ?` "'" table)
(modify-syntax-entry ?~ "'" table)
(modify-syntax-entry ?^ "'" table)
(modify-syntax-entry ?@ "'" table)
(modify-syntax-entry ?? "_ p" table) ; ? is a prefix outside symbols
(modify-syntax-entry ?# "_ p" table) ; # is allowed inside keywords (#399)
(modify-syntax-entry ?' "_ p" table) ; ' is allowed anywhere but the start of symbols
;; Others
(modify-syntax-entry ?\; "<" table) ; comment start
(modify-syntax-entry ?\n ">" table) ; comment end
(modify-syntax-entry ?\" "\"" table) ; string
(modify-syntax-entry ?\\ "\\" table) ; escape
table)
"Syntax table for `clojure-ts-mode'.")
(defconst clojure-ts--builtin-dynamic-var-regexp
(eval-and-compile
(concat "^"
(regexp-opt
'("*1" "*2" "*3" "*agent*"
"*allow-unresolved-vars*" "*assert*" "*clojure-version*"
"*command-line-args*" "*compile-files*"
"*compile-path*" "*data-readers*" "*default-data-reader-fn*"
"*e" "*err*" "*file*" "*flush-on-newline*"
"*in*" "*macro-meta*" "*math-context*" "*ns*" "*out*"
"*print-dup*" "*print-length*" "*print-level*"
"*print-meta*" "*print-readably*"
"*read-eval*" "*source-path*"
"*unchecked-math*"
"*use-context-classloader*" "*warn-on-reflection*"))
"$")))
(defconst clojure-ts--builtin-symbol-regexp
(eval-and-compile
(concat "^"
(regexp-opt
'("do" "if" "let*" "var"
"fn" "fn*" "loop*" "recur"
"throw" "try" "catch" "finally"
"set!" "new"
"monitor-enter" "monitor-exit"
"quote"
"->" "->>" ".." "."
"amap" "and" "areduce" "as->" "assert"
"binding" "bound-fn"
"case" "comment" "cond" "cond->" "cond->>" "condp"
"declare" "def" "definline" "definterface" "defmacro" "defmethod"
"defmulti" "defn" "defn-" "defonce" "defprotocol" "defrecord"
"defstruct" "deftype"
"delay" "doall" "dorun" "doseq" "dosync" "dotimes" "doto"
"extend-protocol" "extend-type"
"for" "future"
"gen-class" "gen-interface"
"if-let" "if-not" "if-some" "import" "in-ns""io!"
"lazy-cat" "lazy-seq" "let" "letfn" "locking" "loop"
"memfn" "ns" "or"
"proxy" "proxy-super" "pvalues"
"refer-clojure" "reify"
"some->" "some->>""sync"
"time" "vswap!"
"when" "when-first" "when-let" "when-not" "when-some" "while"
"with-bindings" "with-in-str" "with-loading-context"
"with-local-vars" "with-open" "with-out-str" "with-precision"
"with-redefs" "with-redefs-fn"
;; Commonly used clojure.test functions
"deftest" "deftest-" "is" "are" "testing"))
"$")))
(defface clojure-ts-keyword-face
'((t (:inherit font-lock-constant-face)))
"Face used to font-lock Clojure keywords (:something).")
(defface clojure-ts-character-face
'((t (:inherit font-lock-string-face)))
"Face used to font-lock Clojure character literals.")
(defun clojure-ts-symbol-regexp (symbols)
"Return a regular expression that matches one of SYMBOLS exactly."
(concat "^" (regexp-opt symbols) "$"))
(defvar clojure-ts-function-docstring-symbols
'("definline"
"defmulti"
"defmacro"
"defn"
"defn-"
"defprotocol"
"ns")
"Symbols that accept an optional docstring as their second argument.")
(defvar clojure-ts-definition-docstring-symbols
'("def")
"Symbols that accept an optional docstring as their second argument.
Any symbols added here should only treat their second argument as a docstring
if a third argument (the value) is provided.
\"def\" is the only builtin Clojure symbol that behaves like this.")
(defconst clojure-ts--variable-definition-symbol-regexp
(eval-and-compile
(rx line-start (or "def" "defonce") line-end))
"A regular expression matching a symbol used to define a variable.")
(defconst clojure-ts--typedef-symbol-regexp
(eval-and-compile
(rx line-start
(or "defprotocol" "defmulti" "deftype" "defrecord"
"definterface" "defmethod" "defstruct")
line-end))
"A regular expression matching a symbol used to define a type.")
(defconst clojure-ts--type-symbol-regexp
(eval-and-compile
(rx line-start
(or "deftype" "defrecord"
;; While not reifying, helps with doc strings
"defprotocol" "definterface"
"reify" "proxy" "extend-type" "extend-protocol")
line-end))
"A regular expression matching a symbol used to define or instantiate a type.")
(defconst clojure-ts--interface-def-symbol-regexp
(eval-and-compile
(rx line-start (or "defprotocol" "definterface") line-end))
"A regular expression matching a symbol used to define an interface.")
(defun clojure-ts--docstring-query (capture-symbol)
"Return a query that captures docstrings with CAPTURE-SYMBOL."
`(;; Captures docstrings in def
((list_lit :anchor (meta_lit) :?
:anchor (sym_lit) @_def_symbol
:anchor (comment) :?
:anchor (sym_lit) ; variable name
:anchor (comment) :?
:anchor (str_lit) ,capture-symbol
:anchor (_)) ; the variable's value
(:match ,(clojure-ts-symbol-regexp clojure-ts-definition-docstring-symbols)
@_def_symbol))
;; Captures docstrings in metadata of definitions
((list_lit :anchor (sym_lit) @_def_symbol
:anchor (comment) :?
:anchor (sym_lit
(meta_lit
value: (map_lit
(kwd_lit) @_doc-keyword
:anchor
(str_lit) ,capture-symbol))))
;; We're only supporting this on a fixed set of defining symbols
;; Existing regexes don't encompass def and defn
;; Naming another regex is very cumbersome.
(:match ,(clojure-ts-symbol-regexp
'("def" "defonce" "defn" "defn-" "defmacro" "ns"
"defmulti" "definterface" "defprotocol"
"deftest" "deftest-"
"deftype" "defrecord" "defstruct"))
@_def_symbol)
(:equal @_doc-keyword ":doc"))
;; Captures docstrings defn, defmacro, ns, and things like that
((list_lit :anchor (meta_lit) :?
:anchor (sym_lit) @_def_symbol
:anchor (comment) :?
:anchor (sym_lit) ; function_name
:anchor (comment) :?
:anchor (str_lit) ,capture-symbol)
(:match ,(clojure-ts-symbol-regexp clojure-ts-function-docstring-symbols)
@_def_symbol))
;; Captures docstrings in defprotcol, definterface
((list_lit :anchor (sym_lit) @_def_symbol
(list_lit
:anchor (sym_lit) (vec_lit) :*
(str_lit) ,capture-symbol :anchor)
:*)
(:match ,clojure-ts--interface-def-symbol-regexp @_def_symbol))))
(defun clojure-ts--treesit-range-settings (use-markdown-inline use-regex)
"Return value for `treesit-range-settings' for `clojure-ts-mode'.
When USE-MARKDOWN-INLINE is non-nil, include range settings for
markdown-inline parser.
When USE-REGEX is non-nil, include range settings for regex parser."
(append
(when use-markdown-inline
(treesit-range-rules
:embed 'markdown-inline
:host 'clojure
:offset '(1 . -1)
:local t
(clojure-ts--docstring-query '@capture)))
(when use-regex
(treesit-range-rules
:embed 'regex
:host 'clojure
:offset '(2 . -1)
:local t
'((regex_lit) @capture)))))
(defun clojure-ts--font-lock-settings (markdown-available regex-available)
"Return font lock settings suitable for use in `treesit-font-lock-settings'.
When MARKDOWN-AVAILABLE is non-nil, includes rules for highlighting docstrings
with the markdown-inline grammar.
When REGEX-AVAILABLE is non-nil, includes rules for highlighting regex
literals with regex grammar."
(append
(treesit-font-lock-rules
:feature 'string
:language 'clojure
'((str_lit) @font-lock-string-face
(regex_lit) @font-lock-regexp-face)
:feature 'regex
:language 'clojure
:override t
'((regex_lit marker: _ @font-lock-property-face))
:feature 'number
:language 'clojure
'((num_lit) @font-lock-number-face)
:feature 'constant
:language 'clojure
'([(bool_lit) (nil_lit)] @font-lock-constant-face)
:feature 'char
:language 'clojure
'((char_lit) @clojure-ts-character-face)
:feature 'keyword
:language 'clojure
'((kwd_ns) @font-lock-type-face
(kwd_name) @clojure-ts-keyword-face
(kwd_lit
marker: _ @clojure-ts-keyword-face
delimiter: _ :? @default))
;; Highlight as built-in only if there is no namespace or namespace is
;; `clojure.core'.
:feature 'builtin
:language 'clojure
`(((list_lit meta: _ :* :anchor (sym_lit !namespace name: (sym_name) @font-lock-keyword-face))
(:match ,clojure-ts--builtin-symbol-regexp @font-lock-keyword-face))
((list_lit meta: _ :* :anchor
(sym_lit namespace: ((sym_ns) @ns
(:equal "clojure.core" @ns))
name: (sym_name) @font-lock-keyword-face))
(:match ,clojure-ts--builtin-symbol-regexp @font-lock-keyword-face))
((anon_fn_lit meta: _ :* :anchor (sym_lit !namespace name: (sym_name) @font-lock-keyword-face))
(:match ,clojure-ts--builtin-symbol-regexp @font-lock-keyword-face))
((anon_fn_lit meta: _ :* :anchor
(sym_lit namespace: ((sym_ns) @ns
(:equal "clojure.core" @ns))
name: (sym_name) @font-lock-keyword-face))
(:match ,clojure-ts--builtin-symbol-regexp @font-lock-keyword-face))
((sym_name) @font-lock-builtin-face
(:match ,clojure-ts--builtin-dynamic-var-regexp @font-lock-builtin-face)))
;; Any function calls, not built-ins.
;; This can give false positives (macros, quoted lists, namespace imports)
;; but is a level 4 feature and never enabled by default.
:feature 'function
:language 'clojure
'((list_lit :anchor (sym_lit (sym_name) @font-lock-function-call-face)))
:feature 'symbol
:language 'clojure
'((sym_ns) @font-lock-type-face)
;; How does this work for defns nested in other forms, not at the top level?
;; Should I match against the source node to only hit the top level? Can that be expressed?
;; What about valid usages like `(let [closed 1] (defn +closed [n] (+ n closed)))'??
;; No wonder the tree-sitter-clojure grammar only touches syntax, and not semantics
:feature 'definition ;; defn and defn like macros
:language 'clojure
`(((list_lit :anchor meta: _ :*
:anchor (sym_lit (sym_name) @font-lock-keyword-face)
:anchor (sym_lit (sym_name) @font-lock-function-name-face))
(:match ,(rx-to-string
`(seq bol
(or
"fn"
"defn"
"defn-"
"defmulti"
"defmethod"
"deftest"
"deftest-"
"defmacro"
"definline")
eol))
@font-lock-keyword-face))
((anon_fn_lit
marker: "#" @font-lock-property-face))
;; Methods implementation
((list_lit
((sym_lit name: (sym_name) @def)
((:match ,(rx-to-string
`(seq bol
(or
"defrecord"
"definterface"
"deftype"
"defprotocol")
eol))
@def)))
:anchor
(sym_lit (sym_name) @font-lock-type-face)
(list_lit
(sym_lit name: (sym_name) @font-lock-function-name-face))))
((list_lit
((sym_lit name: (sym_name) @def)
((:equal "reify" @def)))
(list_lit
(sym_lit name: (sym_name) @font-lock-function-name-face))))
;; letfn
((list_lit
((sym_lit name: (sym_name) @symbol)
((:equal "letfn" @symbol)))
(vec_lit
(list_lit
(sym_lit name: (sym_name) @font-lock-function-name-face))))))
:feature 'variable ;; def, defonce
:language 'clojure
`(((list_lit :anchor meta: _ :*
:anchor (sym_lit (sym_name) @font-lock-keyword-face)
:anchor (sym_lit (sym_name) @font-lock-variable-name-face))
(:match ,clojure-ts--variable-definition-symbol-regexp @font-lock-keyword-face)))
;; Can we support declarations in the namespace form?
:feature 'type
:language 'clojure
`(;; Type Declarations
((list_lit :anchor (sym_lit (sym_name) @def)
:anchor (sym_lit (sym_name) @font-lock-type-face))
(:match ,clojure-ts--typedef-symbol-regexp @def))
;; Type Hints
(meta_lit
marker: "^" @font-lock-operator-face
value: (sym_lit (sym_name) @font-lock-type-face))
(old_meta_lit
marker: "#^" @font-lock-operator-face
value: (sym_lit (sym_name) @font-lock-type-face))
;; Highlight namespace
((list_lit :anchor (sym_lit (sym_name) @def)
:anchor (sym_lit (sym_name) @font-lock-type-face))
(:equal "ns" @def)))
:feature 'metadata
:language 'clojure
:override t
`((meta_lit
marker: "^" @font-lock-operator-face
value: (kwd_lit (kwd_name) @clojure-ts-keyword-face))
(old_meta_lit
marker: "#^" @font-lock-operator-face
value: (kwd_lit (kwd_name) @clojure-ts-keyword-face)))
:feature 'tagged-literals
:language 'clojure
:override t
'((tagged_or_ctor_lit marker: "#" @font-lock-preprocessor-face
tag: (sym_lit) @font-lock-preprocessor-face))
:feature 'doc
:language 'clojure
:override t
(clojure-ts--docstring-query '@font-lock-doc-face))
(when markdown-available
(treesit-font-lock-rules
:feature 'doc
:language 'markdown-inline
:override t
`([((image_description) @link)
((link_destination) @font-lock-constant-face)
((code_span) @font-lock-constant-face)
((emphasis) @underline)
((strong_emphasis) @bold)
(inline_link (link_text) @link)
(inline_link (link_destination) @font-lock-constant-face)
(shortcut_link (link_text) @link)])))
(when regex-available
;; Queries are adapted from
;; https://github.com/tree-sitter/tree-sitter-regex/blob/v0.24.3/queries/highlights.scm.
(treesit-font-lock-rules
:feature 'regex
:language 'regex
:override t
'((["("
")"
"(?"
"(?:"
"(?<"
"(?P<"
"(?P="
">"
"["
"]"
"{"
"}"
"[:"
":]"] @font-lock-regexp-grouping-construct)
(["*"
"+"
"?"
"|"
"="
"!"] @font-lock-property-name-face)
((group_name) @font-lock-variable-name-face)
((count_quantifier
[(decimal_digits) @font-lock-number-face
"," @font-lock-delimiter-face]))
((flags) @font-lock-constant-face)
((character_class
["^" @font-lock-escape-face
(class_range "-" @font-lock-escape-face)]))
((identity_escape) @font-lock-builtin-face)
([(start_assertion) (end_assertion)] @font-lock-constant-face))))
(treesit-font-lock-rules
:feature 'quote
:language 'clojure
'((quoting_lit
marker: _ @font-lock-delimiter-face)
(var_quoting_lit
marker: _ @font-lock-delimiter-face)
(syn_quoting_lit
marker: _ @font-lock-delimiter-face)
(unquoting_lit
marker: _ @font-lock-delimiter-face)
(unquote_splicing_lit
marker: _ @font-lock-delimiter-face)
(var_quoting_lit
marker: _ @font-lock-delimiter-face))
:feature 'bracket
:language 'clojure
'((["(" ")" "[" "]" "{" "}"]) @font-lock-bracket-face
(set_lit :anchor "#" @font-lock-bracket-face))
:feature 'comment
:language 'clojure
:override t
`((comment) @font-lock-comment-face
(dis_expr
marker: "#_" @font-lock-comment-delimiter-face
value: _ @font-lock-comment-face)
(,(append
'(list_lit :anchor (sym_lit) @font-lock-comment-delimiter-face)
(when clojure-ts-comment-macro-font-lock-body
'(_ :* @font-lock-comment-face)))
(:match "^\\(\\(clojure.core/\\)?comment\\)$" @font-lock-comment-delimiter-face)))
:feature 'deref ;; not part of clojure-mode, but a cool idea?
:language 'clojure
'((derefing_lit
marker: "@" @font-lock-warning-face)))))
;; Node predicates
(defun clojure-ts--list-node-p (node)
"Return non-nil if NODE is a Clojure list."
(string-equal "list_lit" (treesit-node-type node)))
(defun clojure-ts--anon-fn-node-p (node)
"Return non-nil if NODE is a Clojure function literal."
(string-equal "anon_fn_lit" (treesit-node-type node)))
(defun clojure-ts--opening-paren-node-p (node)
"Return non-nil if NODE is an opening paren."
(string-equal "(" (treesit-node-text node)))
(defun clojure-ts--symbol-node-p (node)
"Return non-nil if NODE is a Clojure symbol."
(string-equal "sym_lit" (treesit-node-type node)))
(defun clojure-ts--string-node-p (node)
"Return non-nil if NODE is a Clojure string literal."
(string-equal "str_lit" (treesit-node-type node)))
(defun clojure-ts--keyword-node-p (node)
"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--var-node-p (node)
"Return non-nil if NODE is a var (eg. #\\'foo)."
(string-equal "var_quoting_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."
(treesit-node-text (treesit-node-child-by-field-name node "name")))
(defun clojure-ts--node-namespace-text (node)
"Gets the namespace of a symbol or keyword NODE.
If there is no namespace, returns nil."
(treesit-node-text (treesit-node-child-by-field-name node "namespace")))
(defun clojure-ts--symbol-named-p (expected-symbol-name node)
"Return non-nil if NODE is a symbol with text matching EXPECTED-SYMBOL-NAME."
(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', sans metadata.
Skip 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--node-with-metadata-parent (node)
"Return parent for NODE only if NODE has metadata, otherwise return nil."
(when-let* ((prev-sibling (treesit-node-prev-sibling node))
((clojure-ts--metadata-node-p prev-sibling)))
(treesit-node-parent (treesit-node-parent node))))
(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)
(string-match-p symbol-regexp (clojure-ts--named-node-text node))))
(defun clojure-ts--definition-node-p (definition-type-name node)
"Return non-nil if NODE is a definition, defined by DEFINITION-TYPE-NAME.
DEFINITION-TYPE-NAME might be a string like defn, def, defmulti, etc.
See `clojure-ts--definition-node-match-p' when an exact match is not desired."
(and
(clojure-ts--list-node-p node)
(clojure-ts--symbol-named-p definition-type-name (treesit-node-child node 0 t))))
(defun clojure-ts--definition-node-match-p (definition-type-regexp node)
"Return non-nil if NODE is a definition matching DEFINITION-TYPE-REGEXP.
DEFINITION-TYPE-REGEXP matched the symbol used to construct the definition,
like \"defn\".
See `clojure-ts--definition-node-p' when an exact match is possible."
(and
(clojure-ts--list-node-p node)
(let* ((child (clojure-ts--node-child-skip-metadata node 0))
(child-txt (clojure-ts--named-node-text child))
(name-sym (clojure-ts--node-child-skip-metadata node 1)))
(and (clojure-ts--symbol-node-p child)
(clojure-ts--symbol-node-p name-sym)
(string-match-p definition-type-regexp child-txt)))))
(defun clojure-ts--kwd-definition-node-match-p (node)
"Return non-nil if the NODE is a keyword definition."
(and (clojure-ts--list-node-p node)
(let* ((child (clojure-ts--node-child-skip-metadata node 0))
(child-txt (clojure-ts--named-node-text child))
(child-ns (clojure-ts--node-namespace-text child))
(name-kwd (clojure-ts--node-child-skip-metadata node 1)))
(and child-ns
(clojure-ts--symbol-node-p child)
(clojure-ts--keyword-node-p name-kwd)
(string-equal child-txt "def")))))
(defun clojure-ts--standard-definition-node-name (node)
"Return the definition name for the given NODE.
Returns nil if NODE is not a list with symbols as the first two
children. For example the node representing the expression (def foo 1)
would return foo. The node representing (ns user) would return user.
Does not do any matching on the first symbol (def, defn, etc), so
identifying 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 (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
;; that could include metadata that isn't part of the name.
(let ((ns (treesit-node-child-by-field-name sym "ns"))
(name (treesit-node-child-by-field-name sym "name")))
(if ns
(concat (treesit-node-text ns) "/" (treesit-node-text name))
(treesit-node-text name)))))))
(defun clojure-ts--kwd-definition-node-name (node)
"Return the keyword name for the given NODE.
Returns nil if NODE is not a list where the first element is a symbol
and the second is a keyword. For example, a node representing the
expression (s/def ::foo int?) would return foo.
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 (clojure-ts--node-child-skip-metadata node 0)))
(let ((kwd (clojure-ts--node-child-skip-metadata node 1)))
(when (clojure-ts--keyword-node-p kwd)
(treesit-node-text (treesit-node-child-by-field-name kwd "name"))))))
(defvar clojure-ts--function-type-regexp
(rx string-start (or (seq "defn" (opt "-")) "defmethod" "deftest") string-end)
"Regular expression for matching definition nodes that resemble functions.")
(defun clojure-ts--function-node-p (node)
"Return non-nil if NODE is a defn form."
(clojure-ts--definition-node-match-p clojure-ts--function-type-regexp node))
(defun clojure-ts--function-node-name (node)
"Return the name of a function NODE.
Includes a dispatch value when applicable (defmethods)."
(if (clojure-ts--definition-node-p "defmethod" node)
(let ((dispatch-value (treesit-node-text (treesit-node-child node 2 t))))
(concat (clojure-ts--standard-definition-node-name node)
" "
dispatch-value))
(clojure-ts--standard-definition-node-name node)))
(defun clojure-ts--defmacro-node-p (node)
"Return non-nil if NODE is a defmacro form."
(clojure-ts--definition-node-p "defmacro" node))
(defun clojure-ts--ns-node-p (node)
"Return non-nil if NODE is a ns form."
(clojure-ts--definition-node-p "ns" node))
(defvar clojure-ts--variable-definition-type-regexp
(rx string-start (or "def" "defonce") string-end)
"Regular expression for matching definition nodes that resemble variables.")
(defun clojure-ts--variable-definition-node-p (node)
"Return non-nil if NODE is a def or defonce form."
(clojure-ts--definition-node-match-p clojure-ts--variable-definition-type-regexp node))
(defvar clojure-ts--class-type-regexp
(rx string-start (or "deftype" "defrecord" "defstruct") string-end)
"Regular expression for matching definition nodes that resemble classes.")
(defun clojure-ts--class-node-p (node)
"Return non-nil if NODE represents a type, record, or struct definition."
(clojure-ts--definition-node-match-p clojure-ts--class-type-regexp node))
(defvar clojure-ts--interface-type-regexp
(rx string-start (or "defprotocol" "definterface" "defmulti") string-end)
"Regular expression for matching definition nodes that resemble interfaces.")
(defun clojure-ts--interface-node-p (node)
"Return non-nil if NODE represents a protocol or interface definition."
(clojure-ts--definition-node-match-p clojure-ts--interface-type-regexp node))
(defvar clojure-ts--imenu-settings
`(("Namespace" "list_lit" clojure-ts--ns-node-p)
("Function" "list_lit" clojure-ts--function-node-p
;; Used instead of treesit-defun-name-function.
clojure-ts--function-node-name)
("Macro" "list_lit" clojure-ts--defmacro-node-p)
("Variable" "list_lit" clojure-ts--variable-definition-node-p)
("Interface" "list_lit" clojure-ts--interface-node-p)
("Class" "list_lit" clojure-ts--class-node-p)
("Keyword"
"list_lit"
clojure-ts--kwd-definition-node-match-p
clojure-ts--kwd-definition-node-name))
"The value for `treesit-simple-imenu-settings'.
By default `treesit-defun-name-function' is used to extract definition names.
See `clojure-ts--standard-definition-node-name' for the implementation used.")
;;; Outline settings
(defun clojure-ts--outline-predicate (node)
"Return TRUE if NODE is an outline heading comment."
(and (string= (treesit-node-type node) "comment")
(string-match-p "^\\(?:;;;;* \\).*" (treesit-node-text node))))
(defun clojure-ts--outline-level ()
"Return the current level of the outline heading at point."
(let* ((node (treesit-outline--at-point))
(node-text (treesit-node-text node)))
(string-match ";;\\(;+\\) " node-text)
(- (match-end 1) (match-beginning 1))))
(defcustom clojure-ts-indent-style 'semantic
"Automatic indentation style to use when mode `clojure-ts-mode' is run.
The possible values for this variable are
`semantic' - Semantic indentation.
Tries to follow the same rules as cljfmt with default settings.
See:
- https://github.com/weavejester/cljfmt
- https://guide.clojure.style/
`fixed' - A simpler set of indentation rules that can be summarized as
1. Multi-line lists that start with a symbol are always indented with
two spaces.
2. Other multi-line lists, vectors, maps and sets are aligned with the
first element (1 or 2 spaces).
See: https://tonsky.me/blog/clojurefmt/"
:safe #'symbolp
:type
'(choice (const :tag "Semantic indentation rules." semantic)
(const :tag "Simple fixed indentation rules." fixed))
:package-version '(clojure-ts-mode . "0.2.0"))
(defvar clojure-ts--fixed-indent-rules
;; This is in contrast to semantic
;; fixed-indent-rules come from https://tonsky.me/blog/clojurefmt/
`((clojure
((parent-is "source") parent-bol 0)
;; ((query "(list_lit . [(sym_lit) (kwd_lit)] _* @node)") parent 2)
;; Using the above `query' rule here doesn't always work because sometimes `node' is nil.
;; `query' requires `node' to be matched.
;; We really only care about the parent node being a function-call like list.
;; with it's first named child being a symbol
((lambda (node parent _)
(and (clojure-ts--list-node-p parent)
;; Should we also check for keyword first child, as in (:k map) calls?
(let ((first-child (treesit-node-child parent 0 t)))
(or (clojure-ts--symbol-node-p first-child)
(clojure-ts--keyword-node-p first-child)))))
parent 2)
((parent-is "vec_lit") parent 1)