Rename nvim_lsp to lspconfig

1 files changed, 106 insertions, 0 deletions

diff --git a/lua/lspconfig/metals.lua b/lua/lspconfig/metals.lua
new file mode 100644
index 00000000..12e244bb
--- /dev/null
+++ b/lua/lspconfig/metals.lua
@@ -0,0 +1,106 @@
+local configs = require 'lspconfig/configs'
+local util = require 'lspconfig/util'
+local server_name = "metals"
+local bin_name = "metals"
+
+local function make_installer()
+  local install_dir = util.path.join{util.base_install_dir, server_name}
+  local metals_bin = util.path.join{install_dir, bin_name}
+  local server_version
+  if (vim.g.metals_server_version) then
+    server_version = vim.g.metals_server_version
+  else
+    server_version = 'latest.release'
+  end
+  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
+    if not (util.has_bins("java")) then
+      error('Need "JDK" to install this.')
+      return
+    end
+
+    local coursier_exe = nil
+    if util.has_bins("cs") then
+      coursier_exe = "cs"
+    elseif util.has_bins("coursier") then
+      coursier_exe = "coursier"
+    end
+    if not coursier_exe then
+      coursier_exe = install_dir .. "/coursier"
+      local download_cmd = string.format("curl -fLo %s --create-dirs https://git.io/coursier-cli", coursier_exe)
+      local chmod_cmd = string.format("chmod +x %s", coursier_exe)
+      vim.fn.system(download_cmd)
+      vim.fn.system(chmod_cmd)
+    else
+      os.execute("mkdir -p " .. install_dir)
+    end
+
+    local install_cmd = string.format("%s bootstrap --java-opt -Xss4m --java-opt -Xms100m org.scalameta:metals_2.12:%s -r bintray:scalacenter/releases -r sonatype:snapshots -o %s -f", coursier_exe, server_version, metals_bin)
+    vim.fn.system(install_cmd)
+  end
+  function X.info()
+    return {
+      is_installed = util.path.exists(metals_bin);
+      install_dir = install_dir;
+      cmd = { metals_bin };
+    }
+  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 = {"scala"};
+    root_dir = util.root_pattern("build.sbt", "build.sc", "build.gradle", "pom.xml");
+    message_level = vim.lsp.protocol.MessageType.Log;
+    init_options = {
+        statusBarProvider = "show-message",
+        isHttpEnabled = true,
+        compilerOptions = {
+          snippetAutoIndent = false
+        }
+      };
+  };
+  on_new_config = function(config)
+    installer.configure(config)
+  end;
+  docs = {
+    package_json = "https://raw.githubusercontent.com/scalameta/metals-vscode/master/package.json";
+    description  = [[
+https://scalameta.org/metals/
+
+To target a specific version on Metals, set the following.
+If nothing is set, the latest stable will be used.
+```vim
+let g:metals_server_version = '0.8.4+106-5f2b9350-SNAPSHOT'
+```
+
+Scala language server with rich IDE features.
+`metals` can be installed via `:LspInstall metals`.
+]];
+    default_config = {
+      root_dir = [[util.root_pattern("build.sbt", "build.sc", "build.gradle", "pom.xml")]];
+    };
+  };
+};
+
+configs[server_name].install      = installer.install
+configs[server_name].install_info = installer.info