Welcome to Scala 2.12.1 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_121).
Type in expressions for evaluation. Or try :help.
scala> :paste
// Entering paste mode (ctrl-D to finish)
import scala.reflect.runtime._
import scala.reflect.runtime.universe._
import scala.tools.reflect.ToolBox
val mirror = universe.runtimeMirror(universe.getClass.getClassLoader)
val toolbox = mirror.mkToolBox(options = "-Yrangepos")
val text =
"""
|libraryDependencies ++= Seq("org.scala-lang" % "scala-compiler" % "2.10.4") map {
| (dependency) =>{
| dependency
| }
|}
""".stripMargin
val parsed = toolbox.parse(text)
val parsedTrees = parsed match {
case Block(stmt, expr) =>
stmt :+ expr
case t: Tree =>
Seq(t)
}
val statements = parsedTrees.map { (t: Tree) =>
text.substring(t.pos.start, t.pos.end)
}
// Exiting paste mode, now interpreting.
import scala.reflect.runtime._
import scala.reflect.runtime.universe._
import scala.tools.reflect.ToolBox
mirror: reflect.runtime.universe.Mirror = JavaMirror with primordial classloader with boot classpath...
scala> statements.head
res0: String =
libraryDependencies ++= Seq("org.scala-lang" % "scala-compiler" % "2.10.4") map {
(dependency) =>{
dependency
}
The result is:
scala> statements.head
res1: String =
libraryDependencies ++= Seq("org.scala-lang" % "scala-compiler" % "2.10.4") map {
(dependency) =>{
dependency
}
I expected:
libraryDependencies ++= Seq("org.scala-lang" % "scala-compiler" % "2.10.4") map {
(dependency) =>{
dependency
}
}
The last brackets } (and end of line) is missing if I use position from Tree object: text.substring(t.pos.start, t.pos.end)
Any proposal how to extract all text from scala.reflect.api.Trees#Tree object?
Update
Affected scala versions :
For scala 2.10.6/2.12.7 result is the same like in above output.
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Just to move the question off the unanswered list, one can refer to the issue booked for it: