Scala Compiler2.12.4 < Back
 

# Packages

-  package root

  The Scala compiler and reflection APIs.

  The Scala compiler and reflection APIs.

  Definition Classes
    root
-  package scala
  Definition Classes
    root
-  package tools
  Definition Classes
    scala
-  package nsc
  Definition Classes
    tools
-  package interpreter

  The main REPL related classes and values are as follows.

  The main REPL related classes and values are as follows. In addition to standard compiler classes Global and Settings, there are:

  History: an interface for session history. Completion: an interface for tab completion. ILoop (formerly InterpreterLoop): The umbrella class for a session. IMain (formerly Interpreter): Handles the evolving state of the session and handles submitting code to the compiler and handling the output. InteractiveReader: how ILoop obtains input. History: an interface for session history. Completion: an interface for tab completion. Power: a repository for more advanced/experimental features.

  ILoop contains { in: InteractiveReader, intp: IMain, settings: Settings, power: Power } InteractiveReader contains { history: History, completion: Completion } IMain contains { global: Global }

  Definition Classes
    nsc
-  class IMain extends Imports with PresentationCompilation

  An interpreter for Scala code.

  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 accommodate 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.

  Definition Classes
    interpreter
-  class Request extends AnyRef

  One line of code submitted by the user for interpretation

  One line of code submitted by the user for interpretation

  Definition Classes
    IMain
- ClassBasedWrapper
- ObjectBasedWrapper
- Wrapper

c

scala.tools.nsc.interpreter.IMain.Request

# Wrapper 

###

#### abstract class Wrapper extends CodeAssembler[(memberHandlers)#MemberHandler]

generate the source code for the object that computes this request

Source
  IMain.scala

Linear Supertypes
CodeAssembler[(memberHandlers)#MemberHandler], AnyRef, Any
Known Subclasses
ClassBasedWrapper, ObjectBasedWrapper
Type Hierarchy
 
Ordering

1. Alphabetic
2. By Inheritance

Inherited

1. Wrapper
2. CodeAssembler
3. AnyRef
4. Any

Implicitly

1. by any2stringadd
2. by StringFormat
3. by Ensuring
4. by ArrowAssoc

1. Hide All
2. Show All

Visibility

1. Public
2. All

### Instance Constructors

1.  new Wrapper()

### Abstract Value Members

1.  abstract def postamble: String
   Definition Classes
     CodeAssembler
2.  abstract def postwrap: String

   Like postamble for an import wrapper.

3.  abstract def preambleHeader: String

   A format string with %s for $read, specifying the wrapper definition.

### Concrete Value Members

1.  final def !=(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
2.  final def ##(): Int
   Definition Classes
     AnyRef → Any
3.  def +(other: String): String
   Implicit
     This member is added by an implicit conversion from Wrapper to any2stringadd[Wrapper] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd
4.  def ->[B](y: B): (Wrapper, B)
   Implicit
     This member is added by an implicit conversion from Wrapper to ArrowAssoc[Wrapper] performed by method ArrowAssoc in scala.Predef.
   Definition Classes
     ArrowAssoc
   Annotations
     @inline()
5.  final def ==(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
6.  def apply(contributors: List[(memberHandlers)#MemberHandler]): String
   Definition Classes
     CodeAssembler
7.  final def asInstanceOf[T0]: T0
   Definition Classes
     Any
8.  def clone(): AnyRef
   Attributes
     protected[java.lang]
   Definition Classes
     AnyRef
   Annotations
     @native() @throws( ... )
9.  def ensuring(cond: (Wrapper) ⇒ Boolean, msg: ⇒ Any): Wrapper
   Implicit
     This member is added by an implicit conversion from Wrapper to Ensuring[Wrapper] performed by method Ensuring in scala.Predef.
   Definition Classes
     Ensuring
10.  def ensuring(cond: (Wrapper) ⇒ Boolean): Wrapper
    Implicit
      This member is added by an implicit conversion from Wrapper to Ensuring[Wrapper] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
11.  def ensuring(cond: Boolean, msg: ⇒ Any): Wrapper
    Implicit
      This member is added by an implicit conversion from Wrapper to Ensuring[Wrapper] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
12.  def ensuring(cond: Boolean): Wrapper
    Implicit
      This member is added by an implicit conversion from Wrapper to Ensuring[Wrapper] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
13.  def envLines: collection.immutable.List[String]
14.  final def eq(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
15.  def equals(arg0: Any): Boolean
    Definition Classes
      AnyRef → Any
16.  def finalize(): Unit
    Attributes
      protected[java.lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( classOf[java.lang.Throwable] )
17.  def formatted(fmtstr: String): String
    Implicit
      This member is added by an implicit conversion from Wrapper to StringFormat[Wrapper] performed by method StringFormat in scala.Predef.
    Definition Classes
      StringFormat
    Annotations
      @inline()
18.  val generate: ((memberHandlers)#MemberHandler) ⇒ String
    Definition Classes
      Wrapper → CodeAssembler
19.  final def getClass(): Class[_]
    Definition Classes
      AnyRef → Any
    Annotations
      @native()
20.  def hashCode(): Int
    Definition Classes
      AnyRef → Any
    Annotations
      @native()
21.  final def isInstanceOf[T0]: Boolean
    Definition Classes
      Any
22.  final def ne(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
23.  final def notify(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
24.  final def notifyAll(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
25.  def path: String
26.  def preamble: String
    Definition Classes
      Wrapper → CodeAssembler
27.  def preambleLength: Int
28.  def prewrap: String

    Like preambleHeader for an import wrapper.

29.  final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
      AnyRef
30.  def toString(): String
    Definition Classes
      AnyRef → Any
31.  final def wait(): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
32.  final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
33.  final def wait(arg0: Long): Unit
    Definition Classes
      AnyRef
    Annotations
      @native() @throws( ... )
34.  def →[B](y: B): (Wrapper, B)
    Implicit
      This member is added by an implicit conversion from Wrapper to ArrowAssoc[Wrapper] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
      ArrowAssoc

### Inherited from CodeAssembler[(memberHandlers)#MemberHandler]

### Inherited from AnyRef

### Inherited from Any

### Inherited by implicit conversion any2stringadd from Wrapper to any2stringadd[Wrapper]

### Inherited by implicit conversion StringFormat from Wrapper to StringFormat[Wrapper]

### Inherited by implicit conversion Ensuring from Wrapper to Ensuring[Wrapper]

### Inherited by implicit conversion ArrowAssoc from Wrapper to ArrowAssoc[Wrapper]

### Ungrouped