Merge pull request #1 from h-michael/dartls

dartls: auto detect Dart SDK root path

1 files changed, 32 insertions, 5 deletions

diff --git a/lua/nvim_lsp/dartls.lua b/lua/nvim_lsp/dartls.lua
index 663c47a1..b9bdcabf 100644
--- a/lua/nvim_lsp/dartls.lua
+++ b/lua/nvim_lsp/dartls.lua
@@ -4,11 +4,39 @@ local lsp = vim.lsp
 
 local server_name = "dartls"
 local bin_name = "dart"
-local dart_sdk_path = os.getenv("DART_SDK")
+
+local dart_sdk_root_path = function()
+  if vim.fn["executable"]("dart") == 1 then
+    return vim.fn["resolve"](vim.fn["exepath"]("dart"))
+  elseif vim.fn["executable"]("flutter") == 1 then
+    local flutter_path = vim.fn["resolve"](vim.fn["exepath"]("flutter"))
+    local flutter_bin = vim.fn["fnamemodify"](flutter_path, ":h")
+    local dart_sdk_root_path = flutter_bin.."/cache/dart-sdk/bin/dart"
+    if vim.fn["executable"](dart_sdk_root_path) == 1 then
+      return dart_sdk_root_path
+    end
+  end
+  error("[LSP] Could not find Dart SDK root path")
+end
+
+local analysis_server_snapshot_path = function()
+  local dart_sdk_root_path = vim.fn["fnamemodify"](dart_sdk_root_path(), ":h")
+  local snapshot = dart_sdk_root_path.."/snapshots/analysis_server.dart.snapshot"
+
+  if vim.fn["has"]("win32") == 1 or vim.fn["has"]("win64") == 1 then
+    snapshot = snapshot:gsub("/", "\\")
+  end
+
+  if vim.fn["filereadable"](snapshot) == 1 then
+    return snapshot
+  else
+    error("[LSP] Could not find analysis server snapshot")
+  end
+end
 
 configs[server_name] = {
   default_config = {
-    cmd = {bin_name, dart_sdk_path .. "/bin/snapshots/analysis_server.dart.snapshot", "--lsp"};
+    cmd = {bin_name, analysis_server_snapshot_path(), "--lsp"};
     filetypes = {"dart"};
     root_dir = nvim_lsp.util.root_pattern("pubspec.yaml");
     log_level = lsp.protocol.MessageType.Warning;
@@ -22,16 +50,15 @@ configs[server_name] = {
     settings = {};
   };
   docs = {
-    package_json = "https://raw.githubusercontent.com/Dart-Code/Dart-Code/master/package.json";
+    vscode = "Dart-Code.dart-code";
     description = [[
 https://github.com/dart-lang/sdk/tree/master/pkg/analysis_server/tool/lsp_spec
 
-Language server for Dart.
+Language server for dart.
 ]];
     default_config = {
       root_dir = [[root_pattern("pubspec.yaml")]];
     };
   };
 };
-
 -- vim:et ts=2 sw=2