diff options
Diffstat (limited to 'autoload')
| -rw-r--r-- | autoload/xolox/easytags.vim | 54 |
1 files changed, 49 insertions, 5 deletions
diff --git a/autoload/xolox/easytags.vim b/autoload/xolox/easytags.vim index 9168eba..22200df 100644 --- a/autoload/xolox/easytags.vim +++ b/autoload/xolox/easytags.vim @@ -1,9 +1,9 @@ " Vim script " Author: Peter Odding <peter@peterodding.com> -" Last Change: January 15, 2012 +" Last Change: April 19, 2013 " URL: http://peterodding.com/code/vim/easytags/ -let g:xolox#easytags#version = '2.8.1' +let g:xolox#easytags#version = '2.9' " Public interface through (automatic) commands. {{{1 @@ -99,8 +99,11 @@ function! xolox#easytags#update(silent, filter_tags, filenames) " {{{2 let tagsfile = xolox#easytags#get_tagsfile() let firstrun = !filereadable(tagsfile) let cmdline = s:prep_cmdline(cfile, tagsfile, firstrun, a:filenames, context) - let output = s:run_ctags(starttime, cfile, tagsfile, firstrun, cmdline) + let [output, has_updates] = s:run_ctags(starttime, cfile, tagsfile, firstrun, cmdline) if !firstrun + if !has_updates + return 1 + endif if have_args && !empty(g:easytags_by_filetype) " TODO Get the headers from somewhere?! call s:save_by_filetype(a:filter_tags, [], output, context) @@ -222,10 +225,12 @@ endfunction function! s:run_ctags(starttime, cfile, tagsfile, firstrun, cmdline) " {{{3 let lines = [] + let has_updates = 1 if a:cmdline != '' call xolox#misc#msg#debug("easytags.vim %s: Executing %s.", g:xolox#easytags#version, a:cmdline) try let lines = xolox#shell#execute(a:cmdline, 1) + let has_updates = a:firstrun || s:has_updates(a:cfile, join(lines, "\n")) catch /^Vim\%((\a\+)\)\=:E117/ " Ignore missing shell.vim plug-in. let output = system(a:cmdline) @@ -234,6 +239,7 @@ function! s:run_ctags(starttime, cfile, tagsfile, firstrun, cmdline) " {{{3 throw printf(msg, fnamemodify(a:tagsfile, ':~'), strtrans(output)) endif let lines = split(output, "\n") + let has_updates = a:firstrun || s:has_updates(a:cfile, output) endtry if a:firstrun if a:cfile != '' @@ -244,9 +250,47 @@ function! s:run_ctags(starttime, cfile, tagsfile, firstrun, cmdline) " {{{3 return [] endif endif - return xolox#easytags#parse_entries(lines) + return [xolox#easytags#parse_entries(lines), has_updates] endfunction +" Vim 7.3 now has the sha256() function. We use it below to recognize when the +" tags haven't changed from the last time we ran Exuberant Ctags on a file; in +" this case the tags file doesn't have to be written to disk which makes the +" plug-in much faster for a very common case. + +let s:fingerprints = {} + +function! s:has_updates(cfile, output) + if empty(a:cfile) + " The cache doesn't work when tags aren't created for the current file. + return 1 + endif + let fingerprint = s:get_fingerprint(a:cfile, a:output) + call xolox#misc#msg#debug("easytags.vim %s: Fingerprint of tags in %s is %s.", g:xolox#easytags#version, a:cfile, string(fingerprint)) + if !empty(fingerprint) && get(s:fingerprints, a:cfile, '') ==# fingerprint + call xolox#misc#msg#debug("easytags.vim %s: The fingerprint didn't change! We can take a shortcut :-)", g:xolox#easytags#version) + return 0 + endif + let s:fingerprints[a:cfile] = fingerprint + return 1 +endfunction + +if exists('*sha256') + function! s:get_fingerprint(cfile, output) + return sha256(a:output) + endfunction +else + function! s:get_fingerprint(cfile, output) + " Don't want to re-implement a costly hashing function in Vimscript. Just + " handle files that never had any tags. + if empty(a:output) + return get(s:fingerprints, a:cfile, 1) + else + return '' + endif + endfunction +endif + function! s:filter_merge_tags(filter_tags, tagsfile, output, context) " {{{3 let [headers, entries] = xolox#easytags#read_tagsfile(a:tagsfile) let filters = [] @@ -945,7 +989,7 @@ call xolox#easytags#define_tagkind({ \ 'filetype': 'sh', \ 'hlgroup': 'shFunctionTag', \ 'tagkinds': 'f', - \ 'pattern_suffix': '\(\s*()\)\@!'}) + \ 'pattern_suffix': '\(\w\|\s*()\)\@!'}) highlight def link shFunctionTag Operator |