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scalascala-2.11

How to find the name of the enclosing source file in Scala 2.11

At compile time, how to retrieve the name of the current source file (where the code is written) in scala 2.11?

Solution

  • In the REPL, the name is console, but this shows that a position knows its source.

    scala> import scala.language.experimental.macros
import scala.language.experimental.macros

scala> import scala.reflect.macros.whitebox.Context
import scala.reflect.macros.whitebox.Context

scala> def f(c: Context): c.Tree = { import c._,universe._ ; Literal(Constant(c.enclosingPosition.source.file.name)) }
f: (c: scala.reflect.macros.whitebox.Context)c.Tree

scala> def g: String = macro f
defined term macro g: String

scala> g
res0: String = <console>