From: Wilhelm Hugo Kirschbaum <wilhelm@floatpays.co.za>
To: Yuan Fu <casouri@gmail.com>
Cc: 58711@debbugs.gnu.org
Subject: bug#58711: Treesit hangs when calling treesit-search-forward
Date: Mon, 24 Oct 2022 19:06:58 +0200 [thread overview]
Message-ID: <3054006.Zh9iicr411@melissa.local> (raw)
In-Reply-To: <46B629C0-1413-41CE-BDA8-CE14C12B4449@gmail.com>
On Monday, 24 October 2022 01:20:01 SAST Yuan Fu wrote:
> > On Oct 22, 2022, at 11:42 PM, Yuan Fu <casouri@gmail.com> wrote:
> >> On Oct 22, 2022, at 2:53 AM, Wilhelm Kirschbaum <wkirschbaum@gmail.com>
> >> wrote:
> >>
> >> I am attempting to implement treesit for the current elixir-mode using
> >> the branch feature/trees-sitter. For implementing
> >> beginning-of-defun-function using treesit I am running into an issue
> >> where the Emacs will hang indefinitely. Using (setq-local
> >> treesit-defun-type-regexp (rx (or "call"))) yields the same result.
> >>
> >> For the following node-at-point output
> >>
> >> (do_block (call target: (identifier)))
> >>
> >> with Elixir code
> >>
> >> # foo.ex
> >> defmodule Foo do
> >>
> >> <<point/cursor here>>def bar(), do: "bar"
> >>
> >> end
> >>
> >> When I call `(treesit-search-forward-goto (rx (or "call")) 'start nil t)`
> >> the function `treesit-search-forward` seems to get stuck.
> >>
> >> Elixir does not strictly have a begin function, but can be determined as
> >> one of the following: ; * modules and protocols
> >> (call
> >>
> >> target: (identifier) @ignore
> >> (arguments (alias) @name)
> >> (#match? @ignore "^(defmodule|defprotocol)$")) @definition.module
> >>
> >> ; * functions/macros
> >> (call
> >>
> >> target: (identifier) @ignore
> >> (arguments
> >>
> >> [
> >>
> >> ; zero-arity functions with no parentheses
> >> (identifier) @name
> >> ; regular function clause
> >> (call target: (identifier) @name)
> >> ; function clause with a guard clause
> >> (binary_operator
> >>
> >> left: (call target: (identifier) @name)
> >> operator: "when")
> >>
> >> ])
> >>
> >> (#match? @ignore
> >> "^(def|defp|defdelegate|defguard|defguardp|defmacro|defmacrop|defn|defn
> >> p)$")) @definition.function>>
> >> The elixir tree sitter implementation is here:
> >> https://github.com/elixir-lang/tree-sitter-elixir
> >>
> >> I lack the knowledge to further debug this or find a clean workaround,
> >> but I'm almost sure that treesit-search-forward should never hang.>
> > Thanks for reporting this. The way treesit-search-forward-goto works makes
> > it very to have infinite loops. I revised the way it traverses the tree
> > and now it should be impossible to fall into infinite loops.
> >
> > Yuan
>
> Just a heads up: I changed the function signature of
> treesit-search-forward-goto in the latest commit.
>
> Yuan
Thanks, I would need some time to have a proper look. The reporting issue
seems to have been fixed. There are some complications to identify the
appropriate node for defun in elixir as a "call" node might, or might not be
defun, depending on its child identifier ( i currently have to do a query on
cycling up the parent ), but will try the respond in more detail in another
thread.
next prev parent reply other threads:[~2022-10-24 17:06 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-22 9:53 bug#58711: Treesit hangs when calling treesit-search-forward Wilhelm Kirschbaum
2022-10-22 10:26 ` bug#58711: The full tree-sitter parse output Wilhelm Kirschbaum
2022-10-23 6:42 ` bug#58711: Treesit hangs when calling treesit-search-forward Yuan Fu
2022-10-23 23:20 ` Yuan Fu
2022-10-24 17:06 ` Wilhelm Hugo Kirschbaum [this message]
2022-10-24 20:19 ` Yuan Fu
2022-11-10 6:44 ` Wilhelm Kirschbaum
2022-11-10 8:14 ` Yuan Fu
2022-11-10 19:03 ` Wilhelm Kirschbaum
2022-11-10 19:05 ` Wilhelm Kirschbaum
2022-11-10 19:32 ` Wilhelm Kirschbaum
2022-11-10 20:43 ` Wilhelm Kirschbaum
2022-11-10 22:07 ` Yuan Fu
2022-11-11 6:30 ` Wilhelm Kirschbaum
2022-11-14 6:32 ` Wilhelm Kirschbaum
2022-11-14 8:44 ` Yuan Fu
2022-11-14 10:03 ` Wilhelm Kirschbaum
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