feat: add ast-grep language server (#2880)

* feat: add ast-grep language server

* fix: casing of filetypes

1 files changed, 38 insertions, 0 deletions

diff --git a/lua/lspconfig/server_configurations/ast_grep.lua b/lua/lspconfig/server_configurations/ast_grep.lua
new file mode 100644
index 00000000..eba37d6b
--- /dev/null
+++ b/lua/lspconfig/server_configurations/ast_grep.lua
@@ -0,0 +1,38 @@
+local util = require 'lspconfig.util'
+
+return {
+  default_config = {
+    cmd = { 'ast-grep', 'lsp' },
+    filetypes = { -- https://ast-grep.github.io/reference/languages.html
+      'c',
+      'cpp',
+      'rust',
+      'go',
+      'java',
+      'python',
+      'javascript',
+      'typescript',
+      'html',
+      'css',
+      'kotlin',
+      'dart',
+      'lua',
+    },
+    root_dir = util.root_pattern 'sgconfig.yaml',
+    single_file_support = true,
+  },
+  docs = {
+    description = [[
+https://ast-grep.github.io/
+
+ast-grep(sg) is a fast and polyglot tool for code structural search, lint, rewriting at large scale.
+
+```sh
+npm install [-g] @ast-grep/cli
+```
+]],
+    default_config = {
+      root_dir = [[root_pattern('sgconfig.yaml')]],
+    },
+  },
+}