scala.tools.reflect.ToolBox Scala Examples

package org.opencypher.morpheus.impl.util

import org.opencypher.morpheus.api.io.{Labels, Node, Relationship, RelationshipType}

import scala.annotation.StaticAnnotation
import scala.reflect.runtime.universe._
import scala.tools.reflect.ToolBox

private[morpheus] object Annotation {
  def labels[E <: Node: TypeTag]: Set[String] = synchronized {
    get[Labels, E] match {
      case Some(ls) => ls.labels.toSet
      case None     => Set(runtimeClass[E].getSimpleName)
    }
  }

  def relType[E <: Relationship: TypeTag]: String = synchronized {
    get[RelationshipType, E] match {
      case Some(RelationshipType(tpe)) => tpe
      case None                        => runtimeClass[E].getSimpleName.toUpperCase
    }
  }

  def get[A <: StaticAnnotation: TypeTag, E: TypeTag]: Option[A] = synchronized {
    val maybeAnnotation = staticClass[E].annotations.find(_.tree.tpe =:= typeOf[A])
    maybeAnnotation.map { annotation =>
      val tb = typeTag[E].mirror.mkToolBox()
      val instance = tb.eval(tb.untypecheck(annotation.tree)).asInstanceOf[A]
      instance
    }
  }

  private def runtimeClass[E: TypeTag]: Class[E] = synchronized {
    val tag = typeTag[E]
    val mirror = tag.mirror
    val runtimeClass = mirror.runtimeClass(tag.tpe.typeSymbol.asClass)
    runtimeClass.asInstanceOf[Class[E]]
  }

  private def staticClass[E: TypeTag]: ClassSymbol = synchronized {
    val mirror = typeTag[E].mirror
    mirror.staticClass(runtimeClass[E].getCanonicalName)
  }
} 

package eu.timepit.refined.benchmark

import org.openjdk.jmh.annotations._
import scala.reflect.runtime.currentMirror
import scala.tools.reflect.ToolBox

@BenchmarkMode(Array(Mode.AverageTime))
@State(Scope.Thread)
class RefineMacroBenchmark {
  private val toolBox =
    currentMirror.mkToolBox()

  private val autoRefineV_PosInt_tree =
    toolBox.parse("""
      import eu.timepit.refined.auto.autoRefineV
      import eu.timepit.refined.types.numeric.PosInt
      val x: PosInt = 1
      """)

  @Benchmark
  def autoRefineV_PosInt: Any =
    toolBox.eval(autoRefineV_PosInt_tree)
} 

package eu.timepit.refined.benchmark

import org.openjdk.jmh.annotations._
import scala.reflect.runtime.currentMirror
import scala.tools.reflect.ToolBox

@BenchmarkMode(Array(Mode.AverageTime))
@State(Scope.Thread)
class InferMacroBenchmark {
  private val toolBox =
    currentMirror.mkToolBox()

  private val autoInfer_Greater_tree =
    toolBox.parse("""
      import eu.timepit.refined.W
      import eu.timepit.refined.api.Refined
      import eu.timepit.refined.auto.autoInfer
      import eu.timepit.refined.numeric.Greater
      val a: Int Refined Greater[W.`5`.T] = Refined.unsafeApply(10)
      val b: Int Refined Greater[W.`0`.T] = a
      """)

  @Benchmark
  def autoInfer_Greater: Any =
    toolBox.eval(autoInfer_Greater_tree)
} 

package eu.timepit.refined

import eu.timepit.refined.api.Validate
import scala.reflect.runtime.currentMirror
import scala.tools.reflect.ToolBox
import shapeless.Witness

object eval {

  
  final case class Eval[S](s: S)

  object Eval {
    // Cache ToolBox for Eval Validate instances
    private lazy val toolBox = currentMirror.mkToolBox()

    implicit def evalValidate[T, S <: String](
        implicit mt: Manifest[T],
        ws: Witness.Aux[S]
    ): Validate.Plain[T, Eval[S]] = {
      // The ascription (T => Boolean) allows to omit the parameter
      // type in ws.value (i.e. "x => ..." instead of "(x: T) => ...").
      val tree = toolBox.parse(s"(${ws.value}): ($mt => Boolean)")

      val predicate = toolBox.eval(tree).asInstanceOf[T => Boolean]
      Validate.fromPredicate(predicate, _ => ws.value, Eval(ws.value))
    }
  }
} 

package org.apache.s2graph.graphql.types

import sangria.schema.{Argument, Directive, DirectiveLocation, StringType}

object S2Directive {

  object Eval {

    import scala.collection._

    val codeMap = mutable.Map.empty[String, () => Any]

    def compileCode(code: String): () => Any = {
      import scala.tools.reflect.ToolBox
      val toolbox = reflect.runtime.currentMirror.mkToolBox()

      toolbox.compile(toolbox.parse(code))
    }

    def getCompiledCode[T](code: String): T = {
      val compiledCode = Eval.codeMap.getOrElseUpdate(code, Eval.compileCode(code))

      compiledCode
        .asInstanceOf[() => Any]
        .apply()
        .asInstanceOf[T]
    }
  }

  type TransformFunc = String => String

  val funcArg = Argument("func", StringType)

  val Transform =
    Directive("transform",
      arguments = List(funcArg),
      locations = Set(DirectiveLocation.Field),
      shouldInclude = _ => true)

  def resolveTransform(code: String, input: String): String = {
    try {
      val fn = Eval.getCompiledCode[TransformFunc](code)

      fn.apply(input)
    } catch {
      case e: Exception => e.toString
    }
  }
} 

package com.amazon.milan.compiler.flink.generator

import com.amazon.milan.application.ApplicationConfiguration
import com.amazon.milan.application.sources.S3DataSource
import com.amazon.milan.dataformats.JsonDataInputFormat
import com.amazon.milan.compiler.flink.testing.{IntRecord, TestApplicationExecutor}
import com.amazon.milan.lang._
import com.amazon.milan.testing.applications._
import org.junit.Assert._
import org.junit.Test

import scala.reflect.runtime.universe
import scala.tools.reflect.ToolBox


@Test
class TestFlinkGenerator {
  private val generator = new FlinkGenerator(GeneratorConfig())

  @Test
  def test_FlinkGenerator_GenerateScala_WithListSourceAndMapOfOneRecord_GeneratesCodeThatCompilesAndOutputsMappedRecord(): Unit = {
    val input = Stream.of[IntRecord].withName("input")
    val output = input.map(r => IntRecord(r.i + 1)).withName("output")

    val graph = new StreamGraph(output)
    val config = new ApplicationConfiguration
    config.setListSource(input, IntRecord(1))

    val result = TestApplicationExecutor.executeApplication(graph, config, 10, output)
    val outputRecords = result.getRecords(output)
    assertEquals(List(IntRecord(2)), outputRecords)
  }

  @Test
  def test_FlinkGenerator_GenerateScala_WithS3DataSource_GeneratesCodeThatCompiles(): Unit = {
    val input = Stream.of[IntRecord].withName("input")
    val output = input.map(r => IntRecord(r.i + 1)).withName("output")

    val graph = new StreamGraph(output)
    val config = new ApplicationConfiguration
    config.setSource(input, new S3DataSource[IntRecord]("bucket", "prefix", new JsonDataInputFormat[IntRecord]()))

    val generatedCode = this.generator.generateScala(graph, config, "", "TestApp")

    this.eval(generatedCode)
  }

  private def eval(code: String): Any = {
    try {
      val tb = ToolBox(universe.runtimeMirror(this.getClass.getClassLoader)).mkToolBox()
      val tree = tb.parse(code)
      tb.eval(tree)
    }
    catch {
      case ex: Throwable =>
        Console.println(code)
        throw ex
    }
  }
} 

package com.paytrue.scaldy

import java.nio.charset.StandardCharsets
import java.nio.file.Path
import scala.io.Source
import scala.reflect.runtime.currentMirror
import scala.reflect.runtime.universe.Flag._
import scala.reflect.runtime.universe._
import scala.tools.reflect.ToolBox

class ClassDefTraverser(file: Path) extends Traverser {
  var classes: List[BeanClass] = List.empty

  override def traverse(tree: Tree) = {
    tree match {
      case ClassDef(mods, name, _, impl) ⇒
        val valTraverser = new ValDefTraverser
        valTraverser.traverse(tree)
        val parents = impl.parents.map(_.toString())
        classes = classes :+ BeanClass(name.toString, valTraverser.properties, parents,
          isAbstract = mods.hasFlag(ABSTRACT), isTrait = mods.hasFlag(TRAIT), sourceFile = file)

      case _ ⇒
    }
    super.traverse(tree)
  }
}

class ValDefTraverser extends Traverser {
  var properties: List[Property] = List.empty

  override def traverse(tree: Tree) = {
    tree match {
      case ValDef(Modifiers(_, _, annotations), valName, tpt, _) if hasBeanProperty(annotations) ⇒
        val isRequired = hasRequired(annotations)
        tpt match {
          case AppliedTypeTree(Select(qualifier, typeName), args) ⇒
            val typeTraverser = new TypeArgsTraverser
            typeTraverser.traverseTrees(args)
            properties :+= Property(valName.toString, tpt.toString(), typeTraverser.refTypes, isRequired)

          case _ ⇒
            properties :+= Property(valName.toString, tpt.toString(), Set.empty, isRequired)
        }

      case _ ⇒
    }
    super.traverse(tree)
  }

  private def hasBeanProperty(annotations: List[Tree]) = annotations.exists {
    case Apply(Select(New(Ident(TypeName("BeanProperty"))), _), _) ⇒ true
    case _ ⇒ false
  }

  private def hasRequired(annotations: List[Tree]) = annotations.exists {
    case Apply(Select(New(Annotated(_, Ident(TypeName("Required")))), _), _) ⇒ true
    case _ ⇒ false
  }
}

class TypeArgsTraverser extends Traverser {
  var refTypes: Set[String] = Set.empty

  override def traverse(tree: Tree) = {
    tree match {
      case ident @ Ident(identName) if ident.isType ⇒
        refTypes += identName.toString
      case _ ⇒
    }
    super.traverse(tree)
  }
}

object FileClassFinder {
  def getClassesFromFile(file: Path): List[BeanClass] = {
    val toolbox = currentMirror.mkToolBox()
    val fileContents = Source.fromFile(file.toString, StandardCharsets.UTF_8.name()).getLines().drop(1).mkString("\n")
    val tree = toolbox.parse(fileContents)
    val traverser = new ClassDefTraverser(file)
    traverser.traverse(tree)
    traverser.classes
  }
} 

package com.raphtory.core.analysis.API

import akka.actor.ActorContext
import com.raphtory.core.analysis.API.GraphLenses.GraphLens

import scala.collection.mutable
import scala.collection.mutable.ArrayBuffer
import scala.io.Source
import scala.reflect.runtime.currentMirror
import scala.tools.reflect.ToolBox
case class ManagerCount(count: Int)
case class WorkerID(ID: Int)

class BlankAnalyser(args:Array[String]) extends Analyser(args) {
  override def analyse(): Unit = {}
  override def setup(): Unit = {}
  override def returnResults(): Any = {}
  override def defineMaxSteps(): Int = 1
  override def processResults(results: ArrayBuffer[Any], timeStamp: Long, viewCompleteTime: Long): Unit = {println("howdy!")}
}


case class LoadExternalAnalyser(rawFile: String,args:Array[String]) {
  private val toolbox = currentMirror.mkToolBox()
  private val tree = toolbox.parse(rawFile)
  private val compiledCode = toolbox.compile(tree).apply().asInstanceOf[Class[Analyser]]
  def newAnalyser = compiledCode.getConstructor(classOf[Array[String]]).newInstance(args).asInstanceOf[Analyser]
}

abstract class Analyser(args:Array[String]) extends java.io.Serializable {
  implicit var context: ActorContext      = null
  implicit var managerCount: ManagerCount = null
  implicit var proxy: GraphLens            = null
  var workerID: Int                       = 0

  private var toPublish:mutable.ArrayBuffer[String] = ArrayBuffer()
  final def sysSetup(context: ActorContext, managerCount: ManagerCount, proxy: GraphLens, ID: Int) = {
    this.context = context
    this.managerCount = managerCount
    this.proxy = proxy
    this.workerID = ID
  }

  def publishData(data:String) = toPublish +=data
  def getPublishedData() = toPublish.toArray
  def clearPublishedData() =  toPublish = ArrayBuffer()

  def analyse(): Unit
  def setup(): Unit
  def returnResults(): Any

  def defineMaxSteps(): Int
  def processResults(results: ArrayBuffer[Any], timeStamp: Long, viewCompleteTime: Long): Unit
  def processViewResults(results: ArrayBuffer[Any], timestamp: Long, viewCompleteTime: Long): Unit =
    processResults(results, timestamp: Long, viewCompleteTime: Long)
  def processWindowResults(results: ArrayBuffer[Any], timestamp: Long, windowSize: Long, viewCompleteTime: Long): Unit =
    processResults(results, timestamp: Long, viewCompleteTime: Long)
  def processBatchWindowResults(
      results: ArrayBuffer[Any],
      timestamp: Long,
      windowSet: Array[Long],
      viewCompleteTime: Long
  ): Unit = processResults(results, timestamp: Long, viewCompleteTime: Long)
} 

package ai.diffy.lifter

import com.fasterxml.jackson.core.{JsonGenerator, JsonToken}
import com.fasterxml.jackson.databind.annotation.JsonSerialize
import com.fasterxml.jackson.databind.ser.std.StdSerializer
import com.fasterxml.jackson.databind.{JsonNode, ObjectMapper, SerializerProvider}
import com.fasterxml.jackson.module.scala.DefaultScalaModule
import com.fasterxml.jackson.module.scala.experimental.ScalaObjectMapper
import com.twitter.util.Try

import scala.collection.JavaConversions._
import scala.language.postfixOps
import scala.reflect.runtime.universe.runtimeMirror
import scala.tools.reflect.ToolBox
import scala.util.control.NoStackTrace

object JsonLifter {
  @JsonSerialize(using = classOf[JsonNullSerializer])
  object JsonNull
  object JsonParseError extends Exception with NoStackTrace

  val toolbox = runtimeMirror(getClass.getClassLoader).mkToolBox()

  val Mapper = new ObjectMapper with ScalaObjectMapper
  Mapper.registerModule(DefaultScalaModule)
  def apply(obj: Any): JsonNode = Mapper.valueToTree(obj)

  def lift(node: JsonNode): Any = node.asToken match {
    case JsonToken.START_ARRAY        =>
      node.elements.toSeq.map {
        element => lift(element)
      }
    case JsonToken.START_OBJECT       => {
      val fields = node.fieldNames.toSet
      if (fields.exists{ field => Try(toolbox.parse(s"object ${field}123")).isThrow}) {
        node.fields map {field => (field.getKey -> lift(field.getValue))} toMap
      } else {
        FieldMap(
          node.fields map {field => (field.getKey -> lift(field.getValue))} toMap
        )
      }
    }
    case JsonToken.VALUE_FALSE        => false
    case JsonToken.VALUE_NULL         => JsonNull
    case JsonToken.VALUE_NUMBER_FLOAT => node.asDouble
    case JsonToken.VALUE_NUMBER_INT   => node.asLong
    case JsonToken.VALUE_TRUE         => true
    case JsonToken.VALUE_STRING       => node.textValue
    case _                            => throw JsonParseError
  }

  def decode(json: String): JsonNode = Mapper.readTree(json)
  def encode(item: Any): String = Mapper.writer.writeValueAsString(item)
}

class JsonNullSerializer(clazz: Class[Any]) extends StdSerializer[Any](clazz) {
  def this() {
    this(null)
  }

  override def serialize(t: Any, jsonGenerator: JsonGenerator, serializerProvider: SerializerProvider): Unit = {
    jsonGenerator.writeNull()
  }
} 

package argus.macros

import org.scalactic.Equality
import org.scalatest.matchers.{ MatchResult, Matcher }
import scala.tools.reflect.ToolBox


trait ASTMatchers {

  val runtimeUniverse = scala.reflect.runtime.universe
  import runtimeUniverse._
  import scala.reflect.runtime.currentMirror
  val toolbox = currentMirror.mkToolBox()

  // For testing equality between trees in tests
  implicit val treeEq = new Equality[Tree] {
    def areEqual(a: Tree, b: Any): Boolean =
      b match {
        // equalsStructure bug: https://github.com/scalamacros/paradise/issues/80
        case c: Tree => showRaw(a) == showRaw(c) //.equalsStructure(c)
        case _ => false
      }
  }

  implicit val valDefEq = new Equality[ValDef] {
    def areEqual(a: ValDef, b: Any): Boolean =
      b match {
        case c: ValDef => showRaw(a) == showRaw(c)
        case _ => false
      }
  }

  implicit val listTreeEq = new Equality[List[Tree]] {
    def areEqual(a: List[Tree], b: Any): Boolean =
      b match {
        case c: List[_] => a.size == c.size && a.zip(c).forall { case(x,y) => treeEq.areEqual(x,y) }
        case _ => false
      }
  }

  val extractCodecNameAndType: PartialFunction[Tree, (String, String)] = {
    case q"implicit val $name: $typ = $_" => (name.toString, typ.toString)
  }

} 

package opencl.executor

import ir.ast.Lambda
import lift.arithmetic._

import scala.reflect.runtime._
import scala.tools.reflect.ToolBox


object Eval {
  def apply(code: String): Lambda = {
    eval(code).asInstanceOf[Lambda]
  }

  def getMethod(code:String): Seq[ArithExpr] => Lambda = {
    eval(code).asInstanceOf[Seq[ArithExpr] => Lambda]
  }

  def eval(code: String): Any = {
    val mirror = universe.runtimeMirror(getClass.getClassLoader)
    val tb = mirror.mkToolBox()
    val tree = tb.parse(s"""
                           |import arithmetic._
                           |import lift.arithmetic._
                           |import lift.arithmetic.simplifier._
                           |import ir._
                           |import ir.ast._
                           |import opencl.ir._
                           |import opencl.ir.pattern._
                           |import opencl.ir.ast._
                           |$code
                         """.stripMargin)
    tb.eval(tree)
  }
} 

package lacasa

import reflect._
import tools.reflect.{ToolBox, ToolBoxError}

object util {

  implicit class objectops(obj: Any) {
    def mustBe(other: Any) = assert(obj == other, obj + " is not " + other)
    def mustEqual(other: Any) = mustBe(other)
  }

  implicit class stringops(text: String) {
    def mustContain(substring: String) = assert(text contains substring, text)
  }

  def intercept[T <: Throwable : ClassTag](body: => Any): T =
    try {
      body
      throw new Exception(s"Exception of type ${classTag[T]} was not thrown")
    } catch {
      case t: Throwable =>
        Box.uncheckedCatchControl
        if (classTag[T].runtimeClass != t.getClass) throw t
        else t.asInstanceOf[T]
    }

  def eval(code: String, compileOptions: String = ""): Any = {
    val tb = mkToolbox(compileOptions)
    tb.eval(tb.parse(code))
  }

  def mkToolbox(compileOptions: String = ""): ToolBox[_ <: scala.reflect.api.Universe] = {
    val m = scala.reflect.runtime.currentMirror
    import scala.tools.reflect.ToolBox
    m.mkToolBox(options = compileOptions)
  }

  def scalaBinaryVersion: String = {
    val Pattern = """(\d+\.\d+)\..*""".r
    scala.util.Properties.versionNumberString match {
      case Pattern(v) => v
      case _          => ""
    }
  }

  def toolboxClasspath: String = {
    val f = new java.io.File(s"core/target/scala-${scalaBinaryVersion}/classes")
    if (!f.exists) sys.error(s"output directory ${f.getAbsolutePath} does not exist.")
    f.getAbsolutePath
  }

  def sporesClasspath: String = {
    val f = new java.io.File(s"lib/spores-core_2.11.jar")
    if (!f.exists) sys.error(s"jar file ${f.getAbsolutePath} does not exist.")
    f.getAbsolutePath
  }

  def pluginPath: String = {
    val path = java.lang.System.getProperty("lacasa.plugin.jar")
    val f = new java.io.File(path)
    val absPath = f.getAbsolutePath
    println(s"LaCasa plugin path: $absPath")
    absPath
  }

  def expectError(errorSnippet: String, compileOptions: String = "",
                  baseCompileOptions: String = s"-cp ${toolboxClasspath}:${sporesClasspath} -Xplugin:${pluginPath} -P:lacasa:enable")(code: String) {
    intercept[ToolBoxError] {
      eval(code, compileOptions + " " + baseCompileOptions)
    }.getMessage mustContain errorSnippet
  }
} 

package sttp.tapir.util

import org.scalatest.Matchers._
import scala.tools.reflect.{ToolBox, ToolBoxError}

object CompileUtil {
  def interceptEval(code: String): ToolBoxError = {
    intercept[ToolBoxError](eval(code))
  }

  def eval(code: String): Any = {
    val tb = mkToolbox()
    tb.eval(tb.parse(code))
  }

  def mkToolbox(compileOptions: String = ""): ToolBox[_ <: scala.reflect.api.Universe] = {
    val m = scala.reflect.runtime.currentMirror
    m.mkToolBox(options = compileOptions)
  }
} 

package io.univalence

import java.net.URLClassLoader
import java.sql.Date

import io.univalence.centrifuge.Sparknarrow
import org.apache.spark.SparkConf
import org.apache.spark.sql.types._
import org.apache.spark.sql.Encoders
import org.apache.spark.sql.SparkSession
import org.scalatest.FunSuite

case class Person(name: String, age: Int, date: Date)

class SparknarrowTest extends FunSuite {

  val conf: SparkConf = new SparkConf()
  conf.setAppName("yo")
  conf.set("spark.sql.caseSensitive", "true")
  conf.setMaster("local[2]")

  implicit val ss: SparkSession = SparkSession.builder.config(conf).getOrCreate
  import ss.implicits._

  test("testBasicCC") {

    val classDef = Sparknarrow.basicCC(Encoders.product[Person].schema).classDef
    checkDefinition(classDef)

  }

  def checkDefinition(scalaCode: String): Unit = {
    //TODO do a version for 2.11 and 2.12
    
  }

  test("play with scala eval") {

    val code =
      """
        case class Tata(str: String)
        case class Toto(age: Int, tata: Tata)
      """

    checkDefinition(code)
    checkDefinition(code)

  }

  ignore("printSchema StructType") {
    val yo = StructType(
      Seq(
        StructField("name", StringType),
        StructField("tel", ArrayType(StringType))
      )
    )

    yo.printTreeString()
  }

}