add rnix (#408)

1 files changed, 23 insertions, 0 deletions

diff --git a/lua/nvim-lsp-installer/core/clients/crates.lua b/lua/nvim-lsp-installer/core/clients/crates.lua
new file mode 100644
index 00000000..f12a8356
--- /dev/null
+++ b/lua/nvim-lsp-installer/core/clients/crates.lua
@@ -0,0 +1,23 @@
+local fetch = require "nvim-lsp-installer.core.fetch"
+local M = {}
+
+---@alias Crate {crate: {id: string, max_stable_version: string, max_version: string, newest_version: string}}
+
+---@param crate string
+---@param callback fun(err: string|nil, data: Crate|nil)
+function M.fetch_crate(crate, callback)
+    fetch(("https://crates.io/api/v1/crates/%s"):format(crate), function(err, data)
+        if err then
+            callback(err, nil)
+            return
+        end
+        local ok, response = pcall(vim.json.decode, data)
+        if not ok then
+            callback("Failed to deserialize crates.io API response.", nil)
+            return
+        end
+        callback(nil, response)
+    end)
+end
+
+return M