feat: add cadence language server (#2435)

1 files changed, 40 insertions, 0 deletions

diff --git a/lua/lspconfig/server_configurations/cadence.lua b/lua/lspconfig/server_configurations/cadence.lua
new file mode 100644
index 00000000..d9b36cd0
--- /dev/null
+++ b/lua/lspconfig/server_configurations/cadence.lua
@@ -0,0 +1,40 @@
+local util = require 'lspconfig.util'
+
+local config_name = 'flow.json'
+local bin_name = 'flow'
+local cmd = { 'flow', 'cadence', 'language-server' }
+
+if vim.fn.has 'win32' == 1 then
+  cmd = { 'cmd.exe', '/C', bin_name, 'cadence', 'language-server' }
+end
+
+return {
+  default_config = {
+    cmd = cmd,
+    filetypes = { 'cdc' },
+    init_options = {
+      numberOfAccounts = '1',
+    },
+    root_dir = function(fname, _)
+      return util.root_pattern(config_name)(fname) or vim.env.HOME
+    end,
+    on_new_config = function(new_config, new_root_dir)
+      new_config.init_options.configPath = util.path.join(new_root_dir, config_name)
+    end,
+  },
+  docs = {
+    description = [[
+[Cadence Language Server](https://github.com/onflow/cadence-tools/tree/master/languageserver)
+using the [flow-cli](https://developers.flow.com/tools/flow-cli).
+
+The `flow` command from flow-cli must be available. For install instructions see
+[the docs](https://developers.flow.com/tools/flow-cli/install#install-the-flow-cli) or the
+[Github page](https://github.com/onflow/flow-cli).
+
+By default the configuration is taken from the closest `flow.json` or the `flow.json` in the users home directory.
+]],
+    default_config = {
+      root_dir = [[util.root_pattern('flow.json') or vim.env.HOME]],
+    },
+  },
+}