如果您使用 Exuberant CTags 使用继承信息 (see the --fields option) 构建您的标签文件,那么以下脚本将起作用。它添加了一个:Inherits 命令,该命令采用类的名称(例如:Inherits Foo)或正则表达式。
与:tag 命令一样,您可以通过在正则表达式前面加上“\”字符来表示您希望使用正则表达式进行搜索,例如:Inherits \Foo.*.
结果被放入窗口的位置列表,您可以使用:ll、:lne、:lp 等进行浏览。VIM 似乎不允许脚本修改我想要的标记列表喜欢。
如果您想知道我为什么不使用taglist(),那是因为taglist() 在大型标记文件上速度非常慢。原帖有一个使用taglist()的版本,如果你好奇可以浏览编辑历史。
" Parse an Exuberant Ctags record using the same format as taglist()
"
" Throws CtagsParseErr if there is a general problem parsing the record
function! ParseCtagsRec(record, tag_dir)
let tag = {}
" Parse the standard fields
let sep_pos = stridx(a:record, "\t")
if sep_pos < 1
throw 'CtagsParseErr'
endif
let tag['name'] = a:record[:sep_pos - 1]
let tail = a:record[sep_pos + 1:]
let sep_pos = stridx(tail, "\t")
if sep_pos < 1
throw 'CtagsParseErr'
endif
" '/' will work as a path separator on most OS's, but there
" should really be an OS independent way to build paths.
let tag['filename'] = a:tag_dir.'/'.tail[:sep_pos - 1]
let tail = tail[sep_pos + 1:]
let sep_pos = stridx(tail, ";\"\t")
if sep_pos < 1
throw 'CtagsParseErr'
endif
let tag['cmd'] = tail[:sep_pos - 1]
" Parse the Exuberant Ctags extension fields
let extensions = tail[sep_pos + 3:]
for extension in split(extensions, '\t')
let sep_pos = stridx(extension, ':')
if sep_pos < 1
if has_key(tag, 'kind')
throw 'CtagsParseErr'
endif
let tag['kind'] = extension
else
let tag[extension[:sep_pos - 1]] = extension[sep_pos + 1:]
endif
endfor
return tag
endfunction
" Find all classes derived from a given class, or a regex (preceded by a '/')
" The results are placed in the current windows location list.
function! Inherits(cls_or_regex)
if a:cls_or_regex[0] == '/'
let regex = a:cls_or_regex[1:]
else
let regex = '\<'.a:cls_or_regex.'\>$'
endif
let loc_list = []
let tfiles = tagfiles()
let tag_count = 0
let found_count = 0
for file in tfiles
let tag_dir = fnamemodify(file, ':p:h')
try
for line in readfile(file)
let tag_count += 1
if tag_count % 10000 == 0
echo tag_count 'tags scanned,' found_count 'matching classes found. Still searching...'
redraw
endif
if line[0] == '!'
continue
endif
let tag = ParseCtagsRec(line, tag_dir)
if has_key(tag, 'inherits')
let baselist = split(tag['inherits'], ',\s*')
for base in baselist
if match(base, regex) != -1
let location = {}
let location['filename'] = tag['filename']
let cmd = tag['cmd']
if cmd[0] == '/' || cmd[0] == '?'
let location['pattern'] = cmd[1:-2]
else
let location['lnum'] = str2nr(cmd)
endif
call add(loc_list, location)
let found_count += 1
endif
endfor
endif
endfor
catch /^OptionErr$/
echo 'Parsing error: Failed to parse an option.'
return
catch /^CtagsParseErr$/
echo 'Parsing error: Tags files does not appear to be an Exuberant Ctags file.'
return
catch
echo 'Could not read tag file:' file
return
endtry
endfor
call setloclist(0, loc_list)
echo tag_count 'tags scanned,' found_count 'matching classes found.'
endfunction
command! -nargs=1 -complete=tag Inherits call Inherits('<args>')