feat(users/Profpatsch): moving around via the tree-sitter parse tree r/2042

Has a little setup to get the cursor position and map it onto a tree
sitter node. The current node is saved in a cursor variable, and a
highlight overlay marks the range of the current node in the buffer.

Change-Id: I0af56115f928732e993fbefe978a246ca7c757ee
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2258
Reviewed-by: lukegb <lukegb@tvl.fyi>
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI

1 files changed, 16 insertions, 0 deletions

diff --git a/users/Profpatsch/emacs-tree-sitter-move/shell.nix b/users/Profpatsch/emacs-tree-sitter-move/shell.nix
new file mode 100644
index 000000000000..81d622ac73e5
--- /dev/null
+++ b/users/Profpatsch/emacs-tree-sitter-move/shell.nix
@@ -0,0 +1,16 @@
+{ pkgs ? import ../../../third_party {}, ... }:
+let
+  inherit (pkgs) lib;
+
+  treeSitterGrammars = pkgs.runCommandLocal "grammars" {} ''
+    mkdir -p $out/bin
+    ${lib.concatStringsSep "\n"
+      (lib.mapAttrsToList (name: src: "ln -s ${src}/parser $out/bin/${name}.so") pkgs.tree-sitter.builtGrammars)};
+  '';
+
+in pkgs.mkShell {
+  buildInputs = [
+    pkgs.tree-sitter.builtGrammars.python
+  ];
+  TREE_SITTER_GRAMMAR_DIR = treeSitterGrammars;
+}