tree-sitter playground
reddit / emacs

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JDRiverRun · 2022-12-24 17:24

*  [tree-sitter playground](https://tree-sitter.github.io/tree-
sitter/playground)

For people wondering what the parsing capabilities of tree-sitter will
be, or maybe hacking on or planning for some emacs modes to make use
of it, I found the very helpful [tree-sitter playground](https://tree-
sitter.github.io/tree-sitter/playground).  Pick your language, enter
some test code, click around.  It's really impressive.

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darkawower · 2022-12-24 21:17

Awesome, it would be nice to have such feature inside emacs, like
neovim has [https://github.com/nvim-
treesitter/playground](https://github.com/nvim-treesitter/playground)
(right now we have tree-sitter-debug-mode, but without interactivity)

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machineperson · 2022-12-24 23:19

Pity that LISP is missing.

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agumonkey · 2022-12-25 00:24

Maybe I'm querying wrong, but there's no change when I write one.

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AwkwardAd4115 · 2022-12-25 02:15

Lisp might be the only language that doesn't need a parser.

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IcarianComplex · 2022-12-25 02:16

I hope imenu gets a lot better thanks to this. I feel like it never
shows exactly what I want except for org mode.

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JDRiverRun · 2022-12-25 02:33

I was just investigating all the regex and PPSS hackery required to
not-really-nail the identification of things like `x.a['key']` in
python.  Pages and pages of code.

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tmting · 2022-12-25 02:59

I'm not a programmer but would like to understand this. Can you ELI5
to me?

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AwkwardAd4115 · 2022-12-25 04:06

Parsers convert programming language to "abstract syntax trees" (a
hierarchical relationship between the "tokens" that compose a
program). In Lisp, this syntax tree is inherent in the syntax (a lisp
program is composed of S-expressions, which are inherently tree-like).

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machineperson · 2022-12-25 10:22

You mean to say there are no uses for tree-sitter in Lisp? That's
absolutely not true.

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[deleted] · 2022-12-25 11:02

[removed]