1 files changed, 117 insertions, 0 deletions
diff --git a/start/lspconfig-0.1.8/lua/lspconfig/server_configurations/rust_analyzer.lua b/start/lspconfig-0.1.8/lua/lspconfig/server_configurations/rust_analyzer.lua
new file mode 100644
index 0000000..61dfdc1
--- /dev/null
+++ b/start/lspconfig-0.1.8/lua/lspconfig/server_configurations/rust_analyzer.lua
@@ -0,0 +1,117 @@
+local util = require 'lspconfig.util'
+local async = require 'lspconfig.async'
+
+local function reload_workspace(bufnr)
+  bufnr = util.validate_bufnr(bufnr)
+  local clients = util.get_lsp_clients { bufnr = bufnr, name = 'rust_analyzer' }
+  for _, client in ipairs(clients) do
+    vim.notify 'Reloading Cargo Workspace'
+    client.request('rust-analyzer/reloadWorkspace', nil, function(err)
+      if err then
+        error(tostring(err))
+      end
+      vim.notify 'Cargo workspace reloaded'
+    end, 0)
+  end
+end
+
+local function is_library(fname)
+  local user_home = util.path.sanitize(vim.env.HOME)
+  local cargo_home = os.getenv 'CARGO_HOME' or util.path.join(user_home, '.cargo')
+  local registry = util.path.join(cargo_home, 'registry', 'src')
+  local git_registry = util.path.join(cargo_home, 'git', 'checkouts')
+
+  local rustup_home = os.getenv 'RUSTUP_HOME' or util.path.join(user_home, '.rustup')
+  local toolchains = util.path.join(rustup_home, 'toolchains')
+
+  for _, item in ipairs { toolchains, registry, git_registry } do
+    if util.path.is_descendant(item, fname) then
+      local clients = util.get_lsp_clients { name = 'rust_analyzer' }
+      return #clients > 0 and clients[#clients].config.root_dir or nil
+    end
+  end
+end
+
+local function register_cap()
+  local capabilities = vim.lsp.protocol.make_client_capabilities()
+  capabilities.experimental = {
+    serverStatusNotification = true,
+  }
+  return capabilities
+end
+
+return {
+  default_config = {
+    cmd = { 'rust-analyzer' },
+    filetypes = { 'rust' },
+    single_file_support = true,
+    root_dir = function(fname)
+      local reuse_active = is_library(fname)
+      if reuse_active then
+        return reuse_active
+      end
+
+      local cargo_crate_dir = util.root_pattern 'Cargo.toml'(fname)
+      local cargo_workspace_root
+
+      if cargo_crate_dir ~= nil then
+        local cmd = {
+          'cargo',
+          'metadata',
+          '--no-deps',
+          '--format-version',
+          '1',
+          '--manifest-path',
+          util.path.join(cargo_crate_dir, 'Cargo.toml'),
+        }
+
+        local result = async.run_command(cmd)
+
+        if result and result[1] then
+          result = vim.json.decode(table.concat(result, ''))
+          if result['workspace_root'] then
+            cargo_workspace_root = util.path.sanitize(result['workspace_root'])
+          end
+        end
+      end
+
+      return cargo_workspace_root
+        or cargo_crate_dir
+        or util.root_pattern 'rust-project.json'(fname)
+        or util.find_git_ancestor(fname)
+    end,
+    capabilities = register_cap(),
+  },
+  commands = {
+    CargoReload = {
+      function()
+        reload_workspace(0)
+      end,
+      description = 'Reload current cargo workspace',
+    },
+  },
+  docs = {
+    description = [[
+https://github.com/rust-lang/rust-analyzer
+
+rust-analyzer (aka rls 2.0), a language server for Rust
+
+
+See [docs](https://github.com/rust-lang/rust-analyzer/blob/master/docs/user/generated_config.adoc) for extra settings. The settings can be used like this:
+```lua
+require'lspconfig'.rust_analyzer.setup{
+  settings = {
+    ['rust-analyzer'] = {
+      diagnostics = {
+        enable = false;
+      }
+    }
+  }
+}
+```
+    ]],
+    default_config = {
+      root_dir = [[root_pattern("Cargo.toml", "rust-project.json")]],
+    },
+  },
+}