Add Ada Language Server (als)

1 files changed, 92 insertions, 0 deletions

diff --git a/lua/nvim_lsp/als.lua b/lua/nvim_lsp/als.lua
new file mode 100755
index 00000000..7662b37d
--- /dev/null
+++ b/lua/nvim_lsp/als.lua
@@ -0,0 +1,92 @@
+local configs = require 'nvim_lsp/configs'
+local util = require 'nvim_lsp/util'
+local server_name = 'als'
+local bin_name = 'ada_language_server'
+
+if vim.fn.has('win32') == 1 then
+  bin_name = 'ada_language_server.exe'
+end
+
+local function make_installer()
+  local install_dir = util.path.join{util.base_install_dir, server_name}
+
+  local url = 'https://dl.bintray.com/reznikmm/ada-language-server/linux-latest.tar.gz'
+  local download_target = util.path.join{install_dir, "als.tar.gz"}
+  local extracted_dir = "linux"
+  local extract_cmd = string.format("tar -xzf '%s' --one-top-level='%s'", download_target, install_dir)
+
+  if vim.fn.has('win32') == 1 then
+    url = 'https://dl.bintray.com/reznikmm/ada-language-server/win32-latest.zip'
+    download_target = util.path.join{install_dir, 'win32-latest.zip'}
+    extracted_dir = 'win32'
+    extract_cmd = string.format("unzip -o '%s' -d '%s'", download_target, install_dir)
+  elseif vim.fn.has('mac') == 1 then
+    url = 'https://dl.bintray.com/reznikmm/ada-language-server/darwin-latest.tar.gz'
+    download_target = util.path.join{install_dir, 'darwin-latest.tar.gz'}
+    extracted_dir = 'darwin'
+    extract_cmd = string.format("tar -xzf '%s' --one-top-level='%s'", download_target, install_dir)
+  end
+
+  local download_cmd = string.format('curl -fLo "%s" --create-dirs "%s"', download_target, url)
+
+  local bin_path = util.path.join{install_dir, extracted_dir, bin_name}
+  local X = {}
+  function X.install()
+    local install_info = X.info()
+    if install_info.is_installed then
+      print(server_name, "is already installed")
+      return
+    end
+    if not (util.has_bins("curl")) then
+      error('Need "curl" to install this.')
+      return
+    end
+    vim.fn.mkdir(install_dir, 'p')
+    vim.fn.system(download_cmd)
+    vim.fn.system(extract_cmd)
+  end
+  function X.info()
+    return {
+      is_installed = util.path.exists(bin_path);
+      install_dir = install_dir;
+      cmd = { bin_path };
+    }
+  end
+  function X.configure(config)
+    local install_info = X.info()
+    if install_info.is_installed then
+      config.cmd = install_info.cmd
+    end
+  end
+  return X
+end
+
+local installer = make_installer()
+
+configs[server_name] = {
+  default_config = {
+    cmd = {bin_name};
+    filetypes = {"ada"};
+    -- *.gpr and *.adc would be nice to have here
+    root_dir = util.root_pattern("Makefile", ".git");
+  };
+  on_new_config = function(config)
+    installer.configure(config)
+  end;
+  docs = {
+    vscode = "AdaCore.ada";
+    package_json = "https://raw.githubusercontent.com/AdaCore/ada_language_server/master/integration/vscode/ada/package.json";
+    description = [[
+https://github.com/AdaCore/ada_language_server
+
+Ada language server. Use `LspInstall als` to install it.
+]];
+    default_config = {
+      root_dir = [[util.root_pattern("Makefile")]];
+    };
+  };
+};
+
+configs[server_name].install = installer.install
+configs[server_name].install_info = installer.info
+-- vim:et ts=2 sw=2