feat: add syntax_tree lsp for ruby formatting (#2056)

1 files changed, 37 insertions, 0 deletions

diff --git a/lua/lspconfig/server_configurations/syntax_tree.lua b/lua/lspconfig/server_configurations/syntax_tree.lua
new file mode 100644
index 00000000..13f8df89
--- /dev/null
+++ b/lua/lspconfig/server_configurations/syntax_tree.lua
@@ -0,0 +1,37 @@
+local util = require 'lspconfig.util'
+
+local bin_name = 'stree'
+local cmd = { bin_name, 'lsp' }
+
+if vim.fn.has 'win32' == 1 then
+  cmd = { 'cmd.exe', '/C', bin_name, 'lsp' }
+end
+
+return {
+  default_config = {
+    cmd = cmd,
+    filetypes = { 'ruby' },
+    root_dir = function(fname)
+      return util.root_pattern '.streerc'(fname) or util.root_pattern('Gemfile', '.git')(fname)
+    end,
+  },
+  docs = {
+    description = [[
+https://ruby-syntax-tree.github.io/syntax_tree/
+
+A fast Ruby parser and formatter.
+
+Syntax Tree is a suite of tools built on top of the internal CRuby parser. It
+provides the ability to generate a syntax tree from source, as well as the
+tools necessary to inspect and manipulate that syntax tree. It can be used to
+build formatters, linters, language servers, and more.
+
+```sh
+gem install syntax_tree
+```
+    ]],
+    default_config = {
+      root_dir = [[root_pattern(".streerc", "Gemfile", ".git")]],
+    },
+  },
+}