dk14 / println-debug

"trace" annotation allows you to automatically print every call to some method

println-debug

Usage:

@trace class MyF {
  def call(param: Int): Int = if (param == 0) param else call(param - 1)
  def call2(param2: Int) = param2
  def call3(param2: Int) = ???
}

(new MyF).call(5)
(new MyF).call2(666)
Try{(new MyF).call3(666)}

Output:

 call(param = 5)
  call(param = 4)
   call(param = 3)
    call(param = 2)
     call(param = 1)
      call(param = 0)
      call = 0
     call = 0
    call = 0
   call = 0
  call = 0
 call = 0
 call2(param2 = 666)
 call2 = 666
 call3(param2 = 666)
 call3 = scala.NotImplementedError: an implementation is missing

Note: macroparadise must be added in client module to use this macro

autoCompilerPlugins := true,
resolvers in ThisBuild  += Resolver.sonatypeRepo("releases"),
libraryDependencies += "org.scalamacros" % "paradise" % "2.0.1" cross CrossVersion.full,
addCompilerPlugin("org.scalamacros" % "paradise" % "2.0.1" cross CrossVersion.full)