1 files changed, 185 insertions, 0 deletions
diff --git a/mac/.config/LunarVim/lua/lvim/lsp/utils.lua b/mac/.config/LunarVim/lua/lvim/lsp/utils.lua
new file mode 100644
index 0000000..0d9bcd7
--- /dev/null
+++ b/mac/.config/LunarVim/lua/lvim/lsp/utils.lua
@@ -0,0 +1,185 @@
+local M = {}
+
+local tbl = require "lvim.utils.table"
+local Log = require "lvim.core.log"
+
+function M.is_client_active(name)
+  local clients = vim.lsp.get_clients()
+  return tbl.find_first(clients, function(client)
+    return client.name == name
+  end)
+end
+
+function M.get_active_clients_by_ft(filetype)
+  local matches = {}
+  local clients = vim.lsp.get_clients()
+  for _, client in pairs(clients) do
+    local supported_filetypes = client.config.filetypes or {}
+    if client.name ~= "null-ls" and vim.tbl_contains(supported_filetypes, filetype) then
+      table.insert(matches, client)
+    end
+  end
+  return matches
+end
+
+function M.get_client_capabilities(client_id)
+  local client = vim.lsp.get_client_by_id(tonumber(client_id))
+  if not client then
+    Log:warn("Unable to determine client from client_id: " .. client_id)
+    return
+  end
+
+  local enabled_caps = {}
+  for capability, status in pairs(client.server_capabilities) do
+    if status == true then
+      table.insert(enabled_caps, capability)
+    end
+  end
+
+  return enabled_caps
+end
+
+---Get supported filetypes per server
+---@param server_name string can be any server supported by nvim-lsp-installer
+---@return string[] supported filestypes as a list of strings
+function M.get_supported_filetypes(server_name)
+  local status_ok, config = pcall(require, ("lspconfig.server_configurations.%s"):format(server_name))
+  if not status_ok then
+    return {}
+  end
+
+  return config.default_config.filetypes or {}
+end
+
+---Get supported servers per filetype
+---@param filter { filetype: string | string[] }?: (optional) Used to filter the list of server names.
+---@return string[] list of names of supported servers
+function M.get_supported_servers(filter)
+  -- force synchronous mode, see: |mason-registry.refresh()|
+  require("mason-registry").refresh()
+  require("mason-registry").get_all_packages()
+
+  local _, supported_servers = pcall(function()
+    return require("mason-lspconfig").get_available_servers(filter)
+  end)
+  return supported_servers or {}
+end
+
+---Get all supported filetypes by nvim-lsp-installer
+---@return string[] supported filestypes as a list of strings
+function M.get_all_supported_filetypes()
+  local status_ok, filetype_server_map = pcall(require, "mason-lspconfig.mappings.filetype")
+  if not status_ok then
+    return {}
+  end
+  return vim.tbl_keys(filetype_server_map or {})
+end
+
+function M.setup_document_highlight(client, bufnr)
+  if lvim.builtin.illuminate.active then
+    Log:debug "skipping setup for document_highlight, illuminate already active"
+    return
+  end
+  local status_ok, highlight_supported = pcall(function()
+    return client.supports_method "textDocument/documentHighlight"
+  end)
+  if not status_ok or not highlight_supported then
+    return
+  end
+  local group = "lsp_document_highlight"
+  local hl_events = { "CursorHold", "CursorHoldI" }
+
+  local ok, hl_autocmds = pcall(vim.api.nvim_get_autocmds, {
+    group = group,
+    buffer = bufnr,
+    event = hl_events,
+  })
+
+  if ok and #hl_autocmds > 0 then
+    return
+  end
+
+  vim.api.nvim_create_augroup(group, { clear = false })
+  vim.api.nvim_create_autocmd(hl_events, {
+    group = group,
+    buffer = bufnr,
+    callback = vim.lsp.buf.document_highlight,
+  })
+  vim.api.nvim_create_autocmd("CursorMoved", {
+    group = group,
+    buffer = bufnr,
+    callback = vim.lsp.buf.clear_references,
+  })
+end
+
+function M.setup_document_symbols(client, bufnr)
+  vim.g.navic_silence = false -- can be set to true to suppress error
+  local symbols_supported = client.supports_method "textDocument/documentSymbol"
+  if not symbols_supported then
+    Log:debug("skipping setup for document_symbols, method not supported by " .. client.name)
+    return
+  end
+  local status_ok, navic = pcall(require, "nvim-navic")
+  if status_ok then
+    navic.attach(client, bufnr)
+  end
+end
+
+function M.setup_codelens_refresh(client, bufnr)
+  local status_ok, codelens_supported = pcall(function()
+    return client.supports_method "textDocument/codeLens"
+  end)
+  if not status_ok or not codelens_supported then
+    return
+  end
+  local group = "lsp_code_lens_refresh"
+  local cl_events = { "BufEnter", "InsertLeave" }
+  local ok, cl_autocmds = pcall(vim.api.nvim_get_autocmds, {
+    group = group,
+    buffer = bufnr,
+    event = cl_events,
+  })
+
+  if ok and #cl_autocmds > 0 then
+    return
+  end
+  vim.api.nvim_create_augroup(group, { clear = false })
+  vim.api.nvim_create_autocmd(cl_events, {
+    group = group,
+    buffer = bufnr,
+    callback = function()
+      vim.lsp.codelens.refresh { bufnr = bufnr }
+    end,
+  })
+end
+
+---filter passed to vim.lsp.buf.format
+---always selects null-ls if it's available and caches the value per buffer
+---@param client table client attached to a buffer
+---@return boolean if client matches
+function M.format_filter(client)
+  local filetype = vim.bo.filetype
+  local n = require "null-ls"
+  local s = require "null-ls.sources"
+  local method = n.methods.FORMATTING
+  local available_formatters = s.get_available(filetype, method)
+
+  if #available_formatters > 0 then
+    return client.name == "null-ls"
+  elseif client.supports_method "textDocument/formatting" then
+    return true
+  else
+    return false
+  end
+end
+
+---Simple wrapper for vim.lsp.buf.format() to provide defaults
+---@param opts table|nil
+function M.format(opts)
+  opts = opts or {}
+  opts.filter = opts.filter or M.format_filter
+
+  return vim.lsp.buf.format(opts)
+end
+
+return M