Generating ctags for scala project [+emacs]

gistfile1.md

Generate ctags for scala project

Add ctags plugin to sbt

~/.sbt//plugins/plugins.sbt

addSbtPlugin("net.ceedubs" %% "sbt-ctags" % "0.1.0")

Loading scala sources with ctags

~/.ctags

--langdef=scala
--langmap=scala:.scala
--regex-scala=/^[ \t]*((abstract|final|sealed|implicit|lazy)[ \t]*)*(private|protected)?[ \t]*class[ \t]+([a-zA-Z0-9_]+)/\4/c,classes/
--regex-scala=/^[ \t]*((abstract|final|sealed|implicit|lazy)[ \t]*)*(private|protected)?[ \t]*object[ \t]+([a-zA-Z0-9_]+)/\4/c,objects/
--regex-scala=/^[ \t]*((abstract|final|sealed|implicit|lazy)[ \t]*)*(private|protected)?[ \t]*case class[ \t]+([a-zA-Z0-9_]+)/\4/c,case classes/
--regex-scala=/^[ \t]*((abstract|final|sealed|implicit|lazy)[ \t]*)*(private|protected)?[ \t]*case object[ \t]+([a-zA-Z0-9_]+)/\4/c,case objects/
--regex-scala=/^[ \t]*((abstract|final|sealed|implicit|lazy)[ \t]*)*(private|protected)?[ \t]*trait[ \t]+([a-zA-Z0-9_]+)/\4/t,traits/
--regex-scala=/^[ \t]*type[ \t]+([a-zA-Z0-9_]+)/\1/T,types/
--regex-scala=/^[ \t]*((abstract|final|sealed|implicit|lazy)[ \t]*)*def[ \t]+([a-zA-Z0-9_]+)/\3/m,methods/
--regex-scala=/^[ \t]*((abstract|final|sealed|implicit|lazy)[ \t]*)*val[ \t]+([a-zA-Z0-9_]+)/\3/l,constants/
--regex-scala=/^[ \t]*((abstract|final|sealed|implicit|lazy)[ \t]*)*var[ \t]+([a-zA-Z0-9_]+)/\3/l,variables/
--regex-scala=/^[ \t]*package[ \t]+([a-zA-Z0-9_.]+)/\1/p,packages/

Generate ctags with sbt

> gen-ctag

Emacs specific

~/.sbt/sbt-ctags.sbt

import net.ceedubs.sbtctags.CtagsKeys
CtagsKeys.ctagsParams ~= (default => default.copy(tagFileName = "TAGS", extraArgs = "-e" +: default.extraArgs))