Scala Settings类代码示例

//设置package包名称以及导入依赖的类
package com.outr.uberterm.interpreter

import scala.reflect.ClassTag
import scala.reflect.runtime.{universe => ru}
import scala.tools.nsc.Settings
import scala.tools.nsc.interpreter.{IMain, NamedParam}

class ScalaInterpreter {
  private val returnValue = new ThreadLocal[Any]
  private val settings = new Settings()
  settings.usejavacp.value = true
  settings.deprecation.value = true
  settings.embeddedDefaults[ScalaInterpreter]
  private val i = new IMain(settings)
  i.bind[ThreadLocal[Any]]("returnValue", returnValue)

  object eval {
    def apply(code: String): Any = {
      returnValue.remove()
      i.interpret(
        s"""
          |try {
          |  returnValue.asInstanceOf[ThreadLocal[Any]].set($code)
          |} catch {
          |  case t: Throwable => returnValue.asInstanceOf[ThreadLocal[Any]].set(t)
          |}
        """.stripMargin)
      returnValue.get() match {
        case t: Throwable => throw t
        case v => v
      }
    }
    def typed[T](code: String): T = apply(code).asInstanceOf[T]
  }

  def bind(name: String, value: Any): Unit = i.bind(NamedParam.clazz(name, value))
//  def bind[T: ru.TypeTag : ClassTag](name: String, value: T): Unit = i.bind(name, value)
} 

//设置package包名称以及导入依赖的类
package com.github.maqicode.unreporter

import scala.tools.nsc.reporters.{ConsoleReporter, StoreReporter}
import scala.tools.nsc.Settings
import scala.reflect.internal.Reporter
import scala.reflect.internal.util.Position
import scala.collection.mutable


class Unreporter(settings: Settings) extends StoreReporter {
  val delegate = new ConsoleReporter(settings)
  val suppressions = new mutable.LinkedHashSet[Position]
  def suppress(position: Position) = suppressions += position
  def unsuppressed: Set[Info] = (infos filter (info => !suppressions(info.pos))).to[Set]

  override def finish(): Unit = unsuppressed foreach forward

  def forward(info: Info) = info.severity match {
    case INFO    => delegate.echo(info.pos, info.msg)
    case WARNING => delegate.warning(info.pos, info.msg)
    case ERROR   => delegate.error(info.pos, info.msg)
    case _       => ()
  }

  override def count(severity: Severity): Int = unsuppressed.count(_.severity == severity)
}
object Unreporter {
  //def apply(settings: Settings) = new Unreporter(new ConsoleReporter(settings))
} 

//设置package包名称以及导入依赖的类
package foo.bar

class Holder { var value: Any = _ }

import scala.tools.nsc.{Interpreter, Settings}

class Foo {
	val settings = new Settings()
	settings.classpath.value = sbt.FileUtilities.classLocationFile[Holder].getAbsolutePath
	val inter = new Interpreter(settings)

	def eval(code: String): Any = {
		val h = new Holder
		inter.bind("$r_", h.getClass.getName, h)
		val r = inter.interpret("$r_.value = " + code)
		h.value
	}
}

object Test
{
	def main(args: Array[String])
	{
		val foo = new Foo
		foo.eval("3")
	}
} 

//设置package包名称以及导入依赖的类
package com.outr.pmc.repl

import com.outr.pmc.Project

import scala.tools.nsc.Settings
import scala.tools.nsc.interpreter.ILoop

class Interpreter(project: Project) {
  val repl = new ILoop {
    override def prompt: String = "pmc> "

    override def createInterpreter(): Unit = {
      super.createInterpreter()

      intp.beQuietDuring {
        project.init(intp)
      }
    }
  }
  repl.process(new Settings {
    usejavacp.value = true
    deprecation.value = true
  })
} 

//设置package包名称以及导入依赖的类
package com.outr.pmc.build.compile

import java.io.File

import com.outr.pmc
import com.outr.pmc.build.compile

import scala.tools.nsc.{Global, Settings}

class ScalacCompiler(implicit val project: pmc.Project) extends compile.Compiler {
  def exec(dependencies: => List[File] = jarDependencies.get,
            outputDirectory: => File = this.outputDirectory.get): Unit = {
    val s = new Settings()
    s.bootclasspath.append(dependencies.map(_.getAbsolutePath).mkString(":"))
    val out = outputDirectory
    out.mkdirs()
    s.outdir.value = out.getAbsolutePath
    val g = new Global(s)
    val run = new g.Run
    val sourceFiles = Compiler.findInputFiles(inputDirectories.get).map(_.getAbsolutePath)
    logger.info(s"Compiling ${sourceFiles.length} files (${sourceFiles.mkString(", ")}).")
    run.compile(sourceFiles)
  }

  override protected def run(): Unit = exec()
}