Álvaro Ramírez

brew tap universal-ctags/universal-ctags
brew install --HEAD universal-ctags

--langdef=swift
--langmap=swift:+.swift

--kinddef-swift=v,variable,variables
--kinddef-swift=f,function,functions
--kinddef-swift=s,struct,structs
--kinddef-swift=c,class,classes
--kinddef-swift=p,protocol,protocols
--kinddef-swift=e,enum,enums
--kinddef-swift=t,typealias,typealiases

--regex-swift=/(var|let)[ \t]+([^:=]+).*$/\2/v/
--regex-swift=/func[ \t]+([^\(\)]+)\([^\(\)]*\)/\1/f/
--regex-swift=/struct[ \t]+([^:\{]+).*$/\1/s/
--regex-swift=/class[ \t]+([^:\{]+).*$/\1/c/
--regex-swift=/protocol[ \t]+([^:\{]+).*$/\1/p/
--regex-swift=/enum[ \t]+([^:\{]+).*$/\1/e/
--regex-swift=/(typealias)[ \t]+([^:=]+).*$/\2/v/

brew install global
brew install ctags
pip install pygments

--langdef=swift
--langmap=swift:.swift
--regex-swift=/[[:<:]]class[[:>:]][[:space:]]+([[:alnum:]_]+)/\1/c,class/
--regex-swift=/[[:<:]]enum[[:>:]][[:space:]]+([[:alnum:]_]+)/\1/e,enum/
--regex-swift=/[[:<:]]func[[:>:]][[:space:]]+([[:alnum:]_]+)/\1/f,function/
--regex-swift=/[[:<:]]protocol[[:>:]][[:space:]]+([[:alnum:]_]+)/\1/P,protocol/
--regex-swift=/[[:<:]]struct[[:>:]][[:space:]]+([[:alnum:]_]+)/\1/s,struct/
--regex-swift=/[[:<:]]typealias[[:>:]][[:space:]]+([[:alnum:]_]+)/\1/t,typealias/

default:\
    :tc=pygments:

ctags:\
    :tc=exuberant-ctags:

exuberant-ctags|plugin-example|setting to use Exuberant Ctags plug-in parser:\
    :tc=common:\
    :ctagscom=ctags:\
    :ctagslib=$libdir/gtags/exuberant-ctags.la:\
    :langmap=Swift\:.swift:\
    :gtags_parser=Swift\:$ctagslib:

pygments:\
    :tc=pygments-parser:

pygments-parser|Pygments plug-in parser:\
    :langmap=Swift\:.swift:\
    :gtags_parser=Swift\:$pygmentslib:\
    :langmap=Common-Lisp\:.cl.lisp.el:\
    :gtags_parser=Common-Lisp\:$pygmentslib:\
    :langmap=Python\:.py.pyw.sc.tac.sage:\
    :gtags_parser=Python\:$pygmentslib:\
    :langmap=Ruby\:.rb.rbw.rake.gemspec.rbx.duby:\
    :gtags_parser=Ruby\:$pygmentslib:\
    :langmap=Objective-C++\:.mm.hh:\
    :gtags_parser=Objective-C++\:$pygmentslib:\
    :langmap=Objective-C\:.m.h:\
    :gtags_parser=Objective-C\:$pygmentslib:\
    :ctagscom=ctags:\
    :pygmentslib=$libdir/gtags/pygments-parser.la:\
    :tc=common:

common:\
    :skip=build/,HTML/,HTML.pub/,tags,TAGS,ID,y.tab.c,y.tab.h,gtags.files,cscope.files,cscope.out,cscope.po.out,cscope.in.out,SCCS/,RCS/,CVS/,CVSROOT/,{arch}/,autom4te.cache/,*.orig,*.rej,*.bak,*~,#*#,*.swp,*.tmp,*_flymake.*,*_flymake,*.o,*.a,*.so,*.lo,*.zip,*.gz,*.bz2,*.xz,*.lzh,*.Z,*.tgz,*.min.js,*min.css:

(use-package counsel-gtags
  :ensure t
  :commands counsel-gtags-mode
  :bind (:map
         counsel-gtags-mode-map
         ("M-." . counsel-gtags-dwim)
         ("M-," . counsel-gtags-go-backward))
  :hook ((swift-mode . counsel-gtags-mode)
         (swift-mode . ggtags-mode)))

;; Needs .ctags and .globalrc in $HOME.
(use-package ggtags
  :ensure t
  :commands ggtags-mode)