Scala example source code file (SourcesCollector.scala)

This example Scala source code file (SourcesCollector.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Scala source code examples by using tags.

All credit for the original source code belongs to scala-lang.org; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Scala tags/keywords

abstractfile, array, batchsourcefile, boolean, compiler, nsc, path, reflection, sourcefile, sourcefilter, sourcescollector, utilities

The SourcesCollector.scala Scala example source code

package scala.tools.nsc.interactive.tests.core

import scala.reflect.internal.util.{SourceFile,BatchSourceFile}
import scala.tools.nsc.io.{AbstractFile,Path}

private[tests] object SourcesCollector {
  type SourceFilter =  Path => Boolean

  /**
   * All files below `base` directory that pass the `filter`.
   * With the default `filter` only .scala and .java files are collected.
   * */
  def apply(base: Path, filter: SourceFilter): Array[SourceFile] = {
    assert(base.isDirectory, base + " is not a directory")
    base.walk.filter(filter).map(source).toList.toArray.sortBy(_.file.name)
  }

  private def source(file: Path): SourceFile = source(AbstractFile.getFile(file.toFile))
  private def source(file: AbstractFile): SourceFile = new BatchSourceFile(file)
}