[4/8] spark git commit: Support cross building for Scala 2.11
http://git-wip-us.apache.org/repos/asf/spark/blob/12f56334/repl/scala-2.11/src/main/scala/org/apache/spark/repl/SparkIMain.scala -- diff --git a/repl/scala-2.11/src/main/scala/org/apache/spark/repl/SparkIMain.scala b/repl/scala-2.11/src/main/scala/org/apache/spark/repl/SparkIMain.scala new file mode 100644 index 000..1bb62c8 --- /dev/null +++ b/repl/scala-2.11/src/main/scala/org/apache/spark/repl/SparkIMain.scala @@ -0,0 +1,1319 @@ +/* NSC -- new Scala compiler + * Copyright 2005-2013 LAMP/EPFL + * @author Martin Odersky + */ + +package scala +package tools.nsc +package interpreter + +import PartialFunction.cond +import scala.language.implicitConversions +import scala.beans.BeanProperty +import scala.collection.mutable +import scala.concurrent.{ Future, ExecutionContext } +import scala.reflect.runtime.{ universe => ru } +import scala.reflect.{ ClassTag, classTag } +import scala.reflect.internal.util.{ BatchSourceFile, SourceFile } +import scala.tools.util.PathResolver +import scala.tools.nsc.io.AbstractFile +import scala.tools.nsc.typechecker.{ TypeStrings, StructuredTypeStrings } +import scala.tools.nsc.util.{ ScalaClassLoader, stringFromReader, stringFromWriter, StackTraceOps } +import scala.tools.nsc.util.Exceptional.unwrap +import javax.script.{AbstractScriptEngine, Bindings, ScriptContext, ScriptEngine, ScriptEngineFactory, ScriptException, CompiledScript, Compilable} + +/** An interpreter for Scala code. + * + * The main public entry points are compile(), interpret(), and bind(). + * The compile() method loads a complete Scala file. The interpret() method + * executes one line of Scala code at the request of the user. The bind() + * method binds an object to a variable that can then be used by later + * interpreted code. + * + * The overall approach is based on compiling the requested code and then + * using a Java classloader and Java reflection to run the code + * and access its results. + * + * In more detail, a single compiler instance is used + * to accumulate all successfully compiled or interpreted Scala code. To + * "interpret" a line of code, the compiler generates a fresh object that + * includes the line of code and which has public member(s) to export + * all variables defined by that code. To extract the result of an + * interpreted line to show the user, a second "result object" is created + * which imports the variables exported by the above object and then + * exports members called "$eval" and "$print". To accomodate user expressions + * that read from variables or methods defined in previous statements, "import" + * statements are used. + * + * This interpreter shares the strengths and weaknesses of using the + * full compiler-to-Java. The main strength is that interpreted code + * behaves exactly as does compiled code, including running at full speed. + * The main weakness is that redefining classes and methods is not handled + * properly, because rebinding at the Java level is technically difficult. + * + * @author Moez A. Abdel-Gawad + * @author Lex Spoon + */ +class SparkIMain(@BeanProperty val factory: ScriptEngineFactory, initialSettings: Settings, + protected val out: JPrintWriter) extends AbstractScriptEngine with Compilable with SparkImports { + imain => + + setBindings(createBindings, ScriptContext.ENGINE_SCOPE) + object replOutput extends ReplOutput(settings.Yreploutdir) { } + + @deprecated("Use replOutput.dir instead", "2.11.0") + def virtualDirectory = replOutput.dir + // Used in a test case. + def showDirectory() = replOutput.show(out) + + private[nsc] var printResults = true // whether to print result lines + private[nsc] var totalSilence = false // whether to print anything + private var _initializeComplete = false // compiler is initialized + private var _isInitialized: Future[Boolean] = null // set up initialization future + private var bindExceptions = true // whether to bind the lastException variable + private var _executionWrapper = ""// code to be wrapped around all lines + + /** We're going to go to some trouble to initialize the compiler asynchronously. +* It's critical that nothing call into it until it's been initialized or we will +* run into unrecoverable issues, but the perceived repl startup time goes +* through the roof if we wait for it. So we initialize it with a future and +* use a lazy val to ensure that any attempt to use the compiler object waits +* on the future. +*/ + private var _classLoader: util.AbstractFileClassLoader = null // active classloader + private val _compiler: ReplGlobal = newCompiler(settings, reporter) // our private compiler + + def compilerClasspath: Seq[java.net.URL] = ( +if
[4/8] spark git commit: Support cross building for Scala 2.11
http://git-wip-us.apache.org/repos/asf/spark/blob/daaca14c/repl/scala-2.11/src/main/scala/org/apache/spark/repl/SparkIMain.scala -- diff --git a/repl/scala-2.11/src/main/scala/org/apache/spark/repl/SparkIMain.scala b/repl/scala-2.11/src/main/scala/org/apache/spark/repl/SparkIMain.scala new file mode 100644 index 000..1bb62c8 --- /dev/null +++ b/repl/scala-2.11/src/main/scala/org/apache/spark/repl/SparkIMain.scala @@ -0,0 +1,1319 @@ +/* NSC -- new Scala compiler + * Copyright 2005-2013 LAMP/EPFL + * @author Martin Odersky + */ + +package scala +package tools.nsc +package interpreter + +import PartialFunction.cond +import scala.language.implicitConversions +import scala.beans.BeanProperty +import scala.collection.mutable +import scala.concurrent.{ Future, ExecutionContext } +import scala.reflect.runtime.{ universe => ru } +import scala.reflect.{ ClassTag, classTag } +import scala.reflect.internal.util.{ BatchSourceFile, SourceFile } +import scala.tools.util.PathResolver +import scala.tools.nsc.io.AbstractFile +import scala.tools.nsc.typechecker.{ TypeStrings, StructuredTypeStrings } +import scala.tools.nsc.util.{ ScalaClassLoader, stringFromReader, stringFromWriter, StackTraceOps } +import scala.tools.nsc.util.Exceptional.unwrap +import javax.script.{AbstractScriptEngine, Bindings, ScriptContext, ScriptEngine, ScriptEngineFactory, ScriptException, CompiledScript, Compilable} + +/** An interpreter for Scala code. + * + * The main public entry points are compile(), interpret(), and bind(). + * The compile() method loads a complete Scala file. The interpret() method + * executes one line of Scala code at the request of the user. The bind() + * method binds an object to a variable that can then be used by later + * interpreted code. + * + * The overall approach is based on compiling the requested code and then + * using a Java classloader and Java reflection to run the code + * and access its results. + * + * In more detail, a single compiler instance is used + * to accumulate all successfully compiled or interpreted Scala code. To + * "interpret" a line of code, the compiler generates a fresh object that + * includes the line of code and which has public member(s) to export + * all variables defined by that code. To extract the result of an + * interpreted line to show the user, a second "result object" is created + * which imports the variables exported by the above object and then + * exports members called "$eval" and "$print". To accomodate user expressions + * that read from variables or methods defined in previous statements, "import" + * statements are used. + * + * This interpreter shares the strengths and weaknesses of using the + * full compiler-to-Java. The main strength is that interpreted code + * behaves exactly as does compiled code, including running at full speed. + * The main weakness is that redefining classes and methods is not handled + * properly, because rebinding at the Java level is technically difficult. + * + * @author Moez A. Abdel-Gawad + * @author Lex Spoon + */ +class SparkIMain(@BeanProperty val factory: ScriptEngineFactory, initialSettings: Settings, + protected val out: JPrintWriter) extends AbstractScriptEngine with Compilable with SparkImports { + imain => + + setBindings(createBindings, ScriptContext.ENGINE_SCOPE) + object replOutput extends ReplOutput(settings.Yreploutdir) { } + + @deprecated("Use replOutput.dir instead", "2.11.0") + def virtualDirectory = replOutput.dir + // Used in a test case. + def showDirectory() = replOutput.show(out) + + private[nsc] var printResults = true // whether to print result lines + private[nsc] var totalSilence = false // whether to print anything + private var _initializeComplete = false // compiler is initialized + private var _isInitialized: Future[Boolean] = null // set up initialization future + private var bindExceptions = true // whether to bind the lastException variable + private var _executionWrapper = ""// code to be wrapped around all lines + + /** We're going to go to some trouble to initialize the compiler asynchronously. +* It's critical that nothing call into it until it's been initialized or we will +* run into unrecoverable issues, but the perceived repl startup time goes +* through the roof if we wait for it. So we initialize it with a future and +* use a lazy val to ensure that any attempt to use the compiler object waits +* on the future. +*/ + private var _classLoader: util.AbstractFileClassLoader = null // active classloader + private val _compiler: ReplGlobal = newCompiler(settings, reporter) // our private compiler + + def compilerClasspath: Seq[java.net.URL] = ( +if