Add Purescript language server (#168)

* Add Purescript language server

1 files changed, 46 insertions, 0 deletions

diff --git a/lua/nvim_lsp/purescriptls.lua b/lua/nvim_lsp/purescriptls.lua
new file mode 100644
index 00000000..82d8c1bc
--- /dev/null
+++ b/lua/nvim_lsp/purescriptls.lua
@@ -0,0 +1,46 @@
+local configs = require 'nvim_lsp/configs'
+local util = require 'nvim_lsp/util'
+
+local server_name = "purescriptls"
+local bin_name = "purescript-language-server"
+
+local installer = util.npm_installer {
+  server_name = server_name;
+  packages = { "purescript", "purescript-language-server" };
+  binaries = {bin_name, "purs"};
+}
+
+configs[server_name] = {
+  default_config = util.utf8_config {
+    cmd = {"purescript-language-server", "--stdio"};
+    filetypes = {"purescript"};
+    root_dir = util.root_pattern("spago.dhall", "bower.json");
+  };
+  on_new_config = function(new_config)
+    local install_info = installer.info()
+    if install_info.is_installed then
+      if type(new_config.cmd) == 'table' then
+        new_config.cmd[1] = install_info.binaries[bin_name]
+      else
+        new_config.cmd = {install_info.binaries[bin_name]}
+      end
+    end
+  end;
+  docs = {
+    vscode = "nwolverson.ide-purescript";
+    description = [[
+https://github.com/nwolverson/purescript-language-server
+`purescript-language-server` can be installed via `:LspInstall purescriptls` or by yourself with `npm`
+```sh
+npm install -g purescript-language-server
+```
+]];
+    default_config = {
+      root_dir = [[root_pattern("spago.dhall, bower.json")]];
+    };
+  };
+};
+configs[server_name].install = installer.install
+configs[server_name].install_info = installer.info
+
+-- vim:et ts=2 sw=2