simplify signature file

Signed-off-by: Tomas Slusny <[email protected]>

Author: deathbeam

lua/autocomplete/signature.lua

@@ -3,47 +3,6 @@ local methods = vim.lsp.protocol.Methods
 
 local M = {}
 
-local state = {
-    entry = nil,
-}
-
-local function cursor_moved(args)
-    local line = vim.api.nvim_get_current_line()
-    local col = vim.api.nvim_win_get_cursor(0)[2]
-    if col == 0 or #line == 0 then
-        return
-    end
-
-    local client = util.get_client(args.buf, methods.textDocument_signatureHelp)
-    if not client then
-        return
-    end
-
-    local before_line = line:sub(1, col)
-    local has_trigger_char = vim.iter(
-        client.server_capabilities.signatureHelpProvider.triggerCharacters or {}
-    )
-        :filter(function(c)
-            return string.find(before_line, '[' .. c .. ']') ~= nil
-        end)
-        :next() ~= nil
-
-    if not has_trigger_char then
-        return
-    end
-
-    util.debounce(state.entry, M.config.debounce_delay, function()
-        vim.lsp.buf.signature_help({
-            focusable = false,
-            close_events = { 'CursorMoved', 'CursorMovedI', 'BufLeave', 'BufWinLeave' },
-            border = M.config.border,
-            max_width = M.config.width,
-            max_height = M.config.height,
-            anchor_bias = 'above',
-        })
-    end)
-end
-
 M.config = {
     border = nil, -- Signature border style
     width = 80, -- Max width of signature window
@@ -53,12 +12,47 @@ M.config = {
 
 function M.setup(config)
     M.config = vim.tbl_deep_extend('force', M.config, config or {})
-    state.entry = util.entry()
 
+    local entry = util.entry()
     vim.api.nvim_create_autocmd({ 'CursorMovedI', 'InsertEnter' }, {
         desc = 'Auto show LSP signature help',
         group = vim.api.nvim_create_augroup('LspSignatureHelp', {}),
-        callback = cursor_moved,
+        callback = function(args)
+            local line = vim.api.nvim_get_current_line()
+            local col = vim.api.nvim_win_get_cursor(0)[2]
+            if col == 0 or #line == 0 then
+                return
+            end
+
+            local client = util.get_client(args.buf, methods.textDocument_signatureHelp)
+            if not client then
+                return
+            end
+
+            local before_line = line:sub(1, col)
+            local has_trigger_char = vim.iter(
+                client.server_capabilities.signatureHelpProvider.triggerCharacters or {}
+            )
+                :filter(function(c)
+                    return string.find(before_line, '[' .. c .. ']') ~= nil
+                end)
+                :next() ~= nil
+
+            if not has_trigger_char then
+                return
+            end
+
+            util.debounce(entry, M.config.debounce_delay, function()
+                vim.lsp.buf.signature_help({
+                    focusable = false,
+                    close_events = { 'CursorMoved', 'CursorMovedI', 'BufLeave', 'BufWinLeave' },
+                    border = M.config.border,
+                    max_width = M.config.width,
+                    max_height = M.config.height,
+                    anchor_bias = 'above',
+                })
+            end)
+        end,
     })
 end