• Home
• ch.epfl.lamp
• dotty-compiler_0.17
• 0.17.0-bin-20190711-e2130b9-NIGHTLY
• source code
• MacroClassLoader.scala

×

Project download

Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $

You can buy this project and download/modify it how often you want.

dotty.tools.dotc.core.MacroClassLoader.scala Maven / Gradle / Ivy

package dotty.tools.dotc.core

import dotty.tools.dotc.core.Contexts._
import dotty.tools.dotc.util.Property
import dotty.tools.dotc.reporting.trace

import scala.collection.mutable

object MacroClassLoader {

  /** A key to be used in a context property that caches the class loader used for macro expansion */
  private val MacroClassLoaderKey = new Property.Key[ClassLoader]

  /** Get the macro class loader */
  def fromContext(implicit ctx: Context): ClassLoader =
    ctx.property(MacroClassLoaderKey).getOrElse(makeMacroClassLoader)

  /** Context with a cached macro class loader that can be accessed with `macroClassLoader` */
  def init(ctx: FreshContext): ctx.type =
    ctx.setProperty(MacroClassLoaderKey, makeMacroClassLoader(ctx))

  private def makeMacroClassLoader(implicit ctx: Context): ClassLoader = trace("new macro class loader") {
    val urls = ctx.settings.classpath.value.split(java.io.File.pathSeparatorChar).map(cp => java.nio.file.Paths.get(cp).toUri.toURL)
    new java.net.URLClassLoader(urls, getClass.getClassLoader)
  }
}