Use methods

autoload/ddc.vim

@@ -1,5 +1,5 @@
 function ddc#enable(opts = {}) abort
-  if denops#plugin#is_loaded('ddc')
+  if 'ddc'->denops#plugin#is_loaded()
     return
   endif
 
@@ -24,7 +24,7 @@ function ddc#enable(opts = {}) abort
   let g:ddc#_started = reltime()
   let g:ddc#_context_filetype = context_filetype
   let g:ddc#_skip_next_complete = 0
-  if !('g:ddc#_mods'->exists())
+  if !'g:ddc#_mods'->exists()
     const g:ddc#_mods = [s:root_dir, 'denops', 'ddc', '_mods.js']->join(s:sep)
   endif
 
@@ -82,7 +82,7 @@ endfunction
 function ddc#on_complete_done(completed_item) abort
   if !ddc#_denops_running()
         \ || a:completed_item->empty()
-        \ || !(a:completed_item->has_key('user_data'))
+        \ || !a:completed_item->has_key('user_data')
         \ || a:completed_item.user_data->type() != v:t_dict
     return
   endif
@@ -147,7 +147,7 @@ function ddc#skip_next_complete() abort
   endif
 endfunction
 
-const s:root_dir = fnamemodify(expand('<sfile>'), ':h:h')
+const s:root_dir = '<sfile>'->expand()->fnamemodify(':h:h')
 const s:sep = has('win32') ? '\' : '/'
 function ddc#_register() abort
   call denops#plugin#register('ddc',

autoload/ddc/map.vim

@@ -18,12 +18,12 @@ function ddc#map#manual_complete(options = {}) abort
 endfunction
 
 function ddc#map#can_complete() abort
-  return !(g:->get('ddc#_items', [])->empty())
+  return !g:->get('ddc#_items', [])->empty()
         \ && g:->get('ddc#_complete_pos', -1) >= 0
 endfunction
 
 function ddc#map#extend(confirm_key) abort
-  if !('g:ddc#_sources'->exists())
+  if !'g:ddc#_sources'->exists()
     return ''
   endif
   return a:confirm_key .. ddc#map#manual_complete(g:ddc#_sources)

autoload/ddc/util.vim

@@ -1,7 +1,7 @@
 function ddc#util#print_error(string, name = 'ddc') abort
   echohl Error
   echomsg printf('[%s] %s', a:name,
-        \ type(a:string) ==# v:t_string ? a:string : string(a:string))
+        \ type(a:string) ==# v:t_string ? a:string : a:string->string())
   echohl None
 endfunction
 
@@ -13,13 +13,13 @@ endfunction
 function ddc#util#get_input(event) abort
   const mode = a:event ==# 'InsertEnter' ? 'i' : mode()
   const is_insert = (mode ==# 'i') || (mode ==# 't')
-  const text = ddc#util#get_text(mode)
+  const text = mode->ddc#util#get_text()
   const col = mode() ==# 't' && !has('nvim') ?
-        \ term_getcursor(bufnr('%'))[1] :
+        \ term_getcursor('%'->bufnr())[1] :
         \ mode() ==# 'c' ? getcmdpos() : col('.')
   const pos = mode ==# 'c' ? col - 1 :
         \ is_insert ? col - 1 : col
-  const input = pos >= len(text) ?
+  const input = pos >= text->len() ?
         \     text :
         \     text->matchstr(
         \         '^.*\%' .. (is_insert || col <= 0 ? col : col - 1)
@@ -28,8 +28,8 @@ function ddc#util#get_input(event) abort
   return input
 endfunction
 function ddc#util#get_next_input(event) abort
-  const text = ddc#util#get_text(mode())
-  return text[len(ddc#util#get_input(a:event)) :]
+  const text = mode()->ddc#util#get_text()
+  return text[a:event->ddc#util#get_input()->len() :]
 endfunction
 
 function ddc#util#benchmark(msg = '') abort