feat: nvim-treesitter

nix/neovim-overlay.nix

@@ -55,6 +55,39 @@ with final.pkgs.lib; let
     flash-nvim
     which-key-nvim
     gitsigns-nvim
+
+    # Treesitter
+    (nvim-treesitter.withPlugins (
+      plugins:
+        with plugins; [
+          bash
+          diff
+          html
+          gitignore
+          javascript
+          jsdoc
+          json
+          jsonc
+          just
+          lua
+          luadoc
+          markdown
+          markdown_inline
+          nix
+          just
+          printf
+          python
+          query
+          regex
+          toml
+          tsx
+          typescript
+          vim
+          vimdoc
+          xml
+          yaml
+        ]
+    ))
   ];
 
   extraPackages = with pkgs; [

nvim/lua/plugins/treesitter/init.lua

@@ -0,0 +1,5 @@
+local req = MarleyVim.local_require('plugins.treesitter')
+
+return {
+  req('nvim-treesitter'),
+}

nvim/lua/plugins/treesitter/nvim-treesitter.lua

@@ -0,0 +1,56 @@
+return {
+  event = { 'BufReadPost', 'BufWritePost', 'BufNewFile', 'DeferredUIEnter' },
+  keys = {
+    { '<C-space>', desc = 'increment selection' },
+    { '<BS>', desc = 'decrement selection', mode = 'x' },
+  },
+  before = function()
+    require('lz.n').trigger_load('which-key.nvim')
+  end,
+  after = function()
+    ---@diagnostic disable-next-line: missing-fields
+    require('nvim-treesitter.configs').setup({
+      highlight = { enable = true },
+      indent = { enable = true },
+      incremental_selection = {
+        enable = true,
+        keymaps = {
+          init_selection = '<C-space>',
+          node_incremental = '<C-space>',
+          scope_incremental = false,
+          node_decremental = '<BS>',
+        },
+      },
+      textobjects = {
+        move = {
+          enable = true,
+          goto_next_start = {
+            [']f'] = '@function.outer',
+            [']c'] = '@class.outer',
+            [']a'] = '@parameter.inner',
+          },
+          goto_next_end = {
+            [']F'] = '@function.outer',
+            [']C'] = '@class.outer',
+            [']A'] = '@parameter.inner',
+          },
+          goto_previous_start = {
+            ['[f'] = '@function.outer',
+            ['[c'] = '@class.outer',
+            ['[a'] = '@parameter.inner',
+          },
+          goto_previous_end = {
+            ['[F'] = '@function.outer',
+            ['[C'] = '@class.outer',
+            ['[A'] = '@parameter.inner',
+          },
+        },
+      },
+    })
+
+    require('which-key').add({
+      { '<BS>', desc = 'decrement selection', mode = 'x' },
+      { '<C-space>', desc = 'increment selection', mode = { 'x', 'n' } },
+    })
+  end,
+}