From: Noah Peart <noah.v.peart@gmail.com>
To: Dmitry Gutov <dmitry@gutov.dev>
Cc: Yuan Fu <casouri@gmail.com>, 68054@debbugs.gnu.org
Subject: bug#68054: [PATCH] Add tree-sitter indent rule for lexical decls in js/typescript
Date: Thu, 2 May 2024 06:26:00 -0700 [thread overview]
Message-ID: <CAPVBTScNQabge9RM9+RLFr6UmUsuh0pQpt7HL46W+i4MVFi+yg@mail.gmail.com> (raw)
In-Reply-To: <db3096de-803d-41ad-a86b-7c7eda3376b9@gutov.dev>
[-- Attachment #1.1: Type: text/plain, Size: 1794 bytes --]
Ok, here is an updated patch for option 3. The indentation looks like the
examples
you've provided - it's the same indentation as in js-mode for these cases.
On Thu, Apr 25, 2024 at 6:06 PM Dmitry Gutov <dmitry@gutov.dev> wrote:
> On 26/04/2024 01:48, Noah Peart wrote:
> > Ok, I can make a patch for option 3 (the same as js-mode) instead. It's
> > implementation is the simplest also. Would that work?
>
> I'd be okay with it, yes, thank you. If only because it's good to have
> similar defaults in both modes, and evolve them together until one is
> deprecated.
>
> FTR, the option more in line with my previous explanation would be
> option 3, I think. Rhere's no real need to implement it right now, I
> guess, but for illustration:
>
> const a =
> (x: string): string => {
> return x + x;
> },
> bbb =
> {
> "x": 0
> },
> cccc =
> 1,
> ddddd = 0;
>
> const bbb =
> {
> "x": 0
> }, a = (x: string): string => {
> return x + x;
> },
> bbb = {
> "x": 0
> },
> cccc = 1,
> ddddd = 0;
>
> js-mode also has by necessity the below exceptions: when the first
> variable's value starts on the same line, and it's multiline (usually
> that means that the same line ends with a {), then its indentation level
> goes back to the statement, not to the "const" keyword:
>
> const a = (x: string): string => {
> return x + x;
> }
>
> var bbb = {
> "x": 0
> }
>
> This is basically to support the non-multivar declarations better.
> js-ts-mode now has the exact same indentation; these cases might come up
> when you change how the first two cases indent, however.
>
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[-- Attachment #2: 0001-Add-typescript-ts-mode-indentation-for-multi-assignm.patch --]
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From 1e23b33a3b4b930386a932ee6177eaf1b6e6a96e Mon Sep 17 00:00:00 2001
From: Noah Peart <noah.v.peart@gmail.com>
Date: Fri, 19 Apr 2024 01:46:50 -0700
Subject: [PATCH] Add typescript-ts-mode indentation for multi-assignment decls
* lisp/progmodes/typescript-ts-mode.el
(typescript-ts-mode--indent-rules): Add indentation rules for
lexical and variable declarations with multiple assignments.
* test/lisp/progmodes/typescript-ts-mode-resources/indent.erts:
Add indent test for variable declarations.
---
lisp/progmodes/typescript-ts-mode.el | 14 ++++++++-
.../typescript-ts-mode-resources/indent.erts | 31 +++++++++++++++++++
2 files changed, 44 insertions(+), 1 deletion(-)
diff --git a/lisp/progmodes/typescript-ts-mode.el b/lisp/progmodes/typescript-ts-mode.el
index ab1d76ab20e..ed60819388f 100644
--- a/lisp/progmodes/typescript-ts-mode.el
+++ b/lisp/progmodes/typescript-ts-mode.el
@@ -91,6 +91,17 @@ tsx-ts-mode--indent-compatibility-b893426
`(((match "<" "jsx_text") parent 0)
((parent-is "jsx_text") parent typescript-ts-mode-indent-offset)))))
+(defun typescript-ts-mode--anchor-decl (_n parent &rest _)
+ "Return the position after the declaration keyword before PARENT.
+
+This anchor allows aligning variable_declarators in variable and lexical
+declarations, accounting for the length of keyword (var, let, or const)."
+ (let* ((declaration (treesit-parent-until
+ parent (rx (or "variable" "lexical") "_declaration") t))
+ (decl (treesit-node-child declaration 0)))
+ (+ (treesit-node-start declaration)
+ (- (treesit-node-end decl) (treesit-node-start decl)))))
+
(defun typescript-ts-mode--indent-rules (language)
"Rules used for indentation.
Argument LANGUAGE is either `typescript' or `tsx'."
@@ -113,7 +124,8 @@ typescript-ts-mode--indent-rules
((parent-is "switch_case") parent-bol typescript-ts-mode-indent-offset)
((parent-is "switch_default") parent-bol typescript-ts-mode-indent-offset)
((parent-is "type_arguments") parent-bol typescript-ts-mode-indent-offset)
- ((parent-is "variable_declarator") parent-bol typescript-ts-mode-indent-offset)
+ ((parent-is ,(rx (or "variable" "lexical") "_" (or "declaration" "declarator")))
+ typescript-ts-mode--anchor-decl 1)
((parent-is "arguments") parent-bol typescript-ts-mode-indent-offset)
((parent-is "array") parent-bol typescript-ts-mode-indent-offset)
((parent-is "formal_parameters") parent-bol typescript-ts-mode-indent-offset)
diff --git a/test/lisp/progmodes/typescript-ts-mode-resources/indent.erts b/test/lisp/progmodes/typescript-ts-mode-resources/indent.erts
index bec96ad82e0..877382953c1 100644
--- a/test/lisp/progmodes/typescript-ts-mode-resources/indent.erts
+++ b/test/lisp/progmodes/typescript-ts-mode-resources/indent.erts
@@ -62,6 +62,37 @@ const foo = (x: string) => {
};
=-=-=
+Name: Lexical and variable declarations
+
+=-=
+const foo = () => {
+ let x = 1,
+ yyyy: {
+ [k: string | number]: string,
+ } = {
+ "foo": "foo",
+ "bar": "bar",
+ };
+ var obar = 1,
+ fo: { [x: any]: any } = {
+ "a": 1,
+ "b": 2,
+ };
+ const cccc = 1,
+ bbb = {
+ "x": 0
+ },
+ ddddd = 0;
+ // First decls with value starting on same line
+ const a = (x: string): string => {
+ return x + x;
+ };
+ var bbb = {
+ "x": 0
+ };
+};
+=-=-=
+
Code:
(lambda ()
(setq indent-tabs-mode nil)
--
2.34.1
next prev parent reply other threads:[~2024-05-02 13:26 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-27 6:21 bug#68054: [PATCH] Add tree-sitter indent rule for lexical decls in js/typescript Noah Peart
2023-12-30 4:24 ` Yuan Fu
2023-12-30 20:31 ` Yuan Fu
2023-12-31 0:31 ` Dmitry Gutov
2023-12-31 5:35 ` Noah Peart
2023-12-31 13:41 ` Dmitry Gutov
2024-01-01 4:56 ` Yuan Fu
2024-04-17 20:21 ` Noah Peart
2024-04-23 5:07 ` Yuan Fu
2024-04-24 0:15 ` Dmitry Gutov
2024-04-24 2:36 ` Noah Peart
2024-04-24 23:15 ` Dmitry Gutov
2024-04-25 22:48 ` Noah Peart
2024-04-26 1:06 ` Dmitry Gutov
2024-05-02 13:26 ` Noah Peart [this message]
2024-05-02 13:38 ` Noah Peart
2024-05-18 8:29 ` Eli Zaretskii
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