From 72b316c87176ff4227a678209d25fecdc764185a Mon Sep 17 00:00:00 2001
From: Christian Brabandt <cb@256bit.org>
Date: Thu, 23 Jun 2016 18:04:23 +0200
Subject: [PATCH] Cache eclim errorlist

fixes #1193
---
 autoload/airline/extensions/eclim.vim | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/autoload/airline/extensions/eclim.vim b/autoload/airline/extensions/eclim.vim
index 50cef99..9f5a17d 100644
--- a/autoload/airline/extensions/eclim.vim
+++ b/autoload/airline/extensions/eclim.vim
@@ -16,7 +16,13 @@ function! airline#extensions#eclim#creat_line(...)
 endfunction
 
 function! airline#extensions#eclim#get_warnings()
+  " Cache vavlues, so that it isn't called too often
+  if exists("s:eclim_errors") &&
+    \  get(b:,  'airline_changenr', 0) == changenr()
+    return s:eclim_errors
+  endif
   let eclimList = eclim#display#signs#GetExisting()
+  let s:eclim_errors = ''
 
   if !empty(eclimList)
     " Remove any non-eclim signs (see eclim#display#signs#Update)
@@ -39,11 +45,12 @@ function! airline#extensions#eclim#get_warnings()
       let errorsNumber = len(eclimList)
       let errors = "[Eclim:" . type . " line:".string(errorsLine)." (".string(errorsNumber).")]"
       if !exists(':SyntasticCheck') || SyntasticStatuslineFlag() == ''
-        return errors.(g:airline_symbols.space)
+        let s:eclim_errors = errors.(g:airline_symbols.space)
       endif
     endif
   endif
-  return ''
+  let b:airline_changenr = changenr()
+  return s:eclim_errors
 endfunction
 
 function! airline#extensions#eclim#init(ext)