Scala Compiler2.13.18 < Back
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# 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 transform
  Definition Classes
    nsc
-  package async
  Definition Classes
    transform
-  package patmat
  Definition Classes
    transform
- AccessorSynthesis
- CleanUp
- Constructors
- Delambdafy
- Erasure
- ExplicitOuter
- ExtensionMethods
- Fields
- Flatten
- InfoTransform
- LambdaLift
- Mixin
- OverridingPairs
- PostErasure
- SampleTransform
- SpecializeTypes
- Statics
- TailCalls
- Transform
- TypeAdaptingTransformer
- TypingTransformers
- UnCurry

c

scala.tools.nsc.transform

# ExplicitOuter

###

#### abstract class ExplicitOuter extends SubComponent with InfoTransform with TypingTransformers with TreeDSL

This class ...

Source
  ExplicitOuter.scala

Linear Supertypes
TreeDSL, TypingTransformers, InfoTransform, Transform, SubComponent, AnyRef, Any
Known Subclasses
explicitOuter
Type Hierarchy

Ordering

1. Alphabetic
2. By Inheritance

Inherited

1. ExplicitOuter
2. TreeDSL
3. TypingTransformers
4. InfoTransform
5. Transform
6. SubComponent
7. AnyRef
8. Any

Implicitly

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

1. Hide All
2. Show All

Visibility

1. Public
2. Protected

### Instance Constructors

1.  new ExplicitOuter()

### Type Members

1.  abstract class StdPhase extends GlobalPhase

   A standard phase template

   A standard phase template

   Definition Classes
     SubComponent
2.  class ExplicitOuterTransformer extends OuterPathTransformer

   The phase performs the following transformations (more or less...):

   The phase performs the following transformations (more or less...):

   (1) An class which is not an interface and is not static gets an outer accessor (@see outerDefs). (1a) A class which is not a trait gets an outer field.

   (4) A constructor of a non-trait inner class gets an outer parameter.

   (5) A reference C.this where C refers to an outer class is replaced by a selection `this.$outer$$C1 ... .$outer$$Cn` (@see outerPath)

   (7) A call to a constructor Q.(args) or Q.$init$(args) where Q != this and the constructor belongs to a non-static class is augmented by an outer argument. E.g. Q.(OUTER, args) where OUTER is the qualifier corresponding to the singleton type Q.

   (8) A call to a constructor this.(args) in a secondary constructor is augmented to this.(OUTER, args) where OUTER is the last parameter of the secondary constructor.

   (9) Remove private modifier from class members M that are accessed from an inner class.

   (10) Remove protected modifier from class members M that are accessed without a super qualifier accessed from an inner class or trait.

   (11) Remove private and protected modifiers from type symbols

   Note: The whole transform is run in phase explicitOuter.next.

   TODO: Make this doc reflect what's actually going on. Some of the deviations are motivated by separate compilation (name mangling based on usage is inherently unstable). Now that traits are compiled 1:1 to interfaces, they can have private members, so there's also less need to make trait members non-private (they still may need to be implemented in subclasses, though we could make those protected...).

3.  final type InfoPhase = ExplicitOuter.Phase
   Definition Classes
     InfoTransform
   Annotations
     @nowarn()
4.  abstract class OuterPathTransformer extends TypingTransformer

   A base class for transformers that maintain outerParam values for outer parameters of constructors.

   A base class for transformers that maintain outerParam values for outer parameters of constructors. The class provides methods for referencing via outer.

5.  final type OuterPhase = Phase
   Annotations
     @nowarn()
6.  class RemoveBindingsTransformer extends Global.AstTransformer
7.  abstract class ThicketTransformer extends TypingTransformer

   A base class for typing transformers that need to perform "thicket expansion".

   A base class for typing transformers that need to perform "thicket expansion". A thicket is the output of a transformation that is flattened into the enclosing block.

   Definition Classes
     TypingTransformers
8.  abstract class TypingTransformer extends Global.AstTransformer
   Definition Classes
     TypingTransformers

### Deprecated Type Members

1.  class Phase extends InfoPhase
   Annotations
     @nowarn() @deprecated
   Deprecated

     (Since version 2.13.4) use OuterPhase instead

### Abstract Value Members

1.  abstract val global: Global
   Definition Classes
     TreeDSL
2.  abstract val runsAfter: List[String]

   Names of phases that must run before this phase.

   Names of phases that must run before this phase.

   Definition Classes
     SubComponent
3.  abstract val runsRightAfter: Option[String]

   Name of the phase that this phase must follow immediately.

   Name of the phase that this phase must follow immediately.

   Definition Classes
     SubComponent

### Concrete Value Members

1.  object CODE
   Definition Classes
     TreeDSL
2.  final def !=(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
3.  final def ##: Int
   Definition Classes
     AnyRef → Any
4.  def +(other: String): String
   Implicit
     This member is added by an implicit conversion from ExplicitOuter toany2stringadd[ExplicitOuter] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd
5.  def ->[B](y: B): (ExplicitOuter, B)
   Implicit
     This member is added by an implicit conversion from ExplicitOuter toArrowAssoc[ExplicitOuter] performed by method ArrowAssoc in scala.Predef.
   Definition Classes
     ArrowAssoc
   Annotations
     @inline()
6.  final def ==(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
7.  final def afterOwnPhase[T](op: => T): T
   Definition Classes
     SubComponent
   Annotations
     @inline()
8.  final def asInstanceOf[T0]: T0
   Definition Classes
     Any
9.  final def beforeOwnPhase[T](op: => T): T
   Definition Classes
     SubComponent
   Annotations
     @inline()
10.  def changesBaseClasses: Boolean

    This class does not change linearization

    This class does not change linearization

    Definition Classes
      ExplicitOuter → InfoTransform
11.  def clone(): AnyRef
    Attributes
      protected[lang]
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.CloneNotSupportedException]) @native()
12.  def enabled: Boolean

    Is this component enabled? Default is true.

    Is this component enabled? Default is true.

    Definition Classes
      SubComponent
13.  def ensuring(cond: (ExplicitOuter) => Boolean, msg: => Any): ExplicitOuter
    Implicit
      This member is added by an implicit conversion from ExplicitOuter toEnsuring[ExplicitOuter] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
14.  def ensuring(cond: (ExplicitOuter) => Boolean): ExplicitOuter
    Implicit
      This member is added by an implicit conversion from ExplicitOuter toEnsuring[ExplicitOuter] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
15.  def ensuring(cond: Boolean, msg: => Any): ExplicitOuter
    Implicit
      This member is added by an implicit conversion from ExplicitOuter toEnsuring[ExplicitOuter] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
16.  def ensuring(cond: Boolean): ExplicitOuter
    Implicit
      This member is added by an implicit conversion from ExplicitOuter toEnsuring[ExplicitOuter] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
17.  final def eq(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
18.  def equals(other: Any): Boolean
    Definition Classes
      SubComponent → AnyRef → Any
19.  def finalize(): Unit
    Attributes
      protected[lang]
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.Throwable])
20.  final def getClass(): Class[_ <: AnyRef]
    Definition Classes
      AnyRef → Any
    Annotations
      @native()
21.  def hasOuterField(clazz: Global.Symbol): Boolean

    Does given clazz define an outer field?

22.  def hashCode(): Int

    SubComponents are added to a HashSet and two phases are the same if they have the same name.

    SubComponents are added to a HashSet and two phases are the same if they have the same name.

    Definition Classes
      SubComponent → AnyRef → Any
23.  val initial: Boolean

    True if this phase runs before all other phases.

    True if this phase runs before all other phases. Usually, `parser`.

    Definition Classes
      SubComponent
24.  val internal: Boolean

    True if this phase is not provided by a plug-in.

    True if this phase is not provided by a plug-in.

    Definition Classes
      SubComponent
25.  final def isInstanceOf[T0]: Boolean
    Definition Classes
      Any
26.  def keepsTypeParams: Boolean
    Attributes
      protected
    Definition Classes
      InfoTransform
27.  final def ne(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
28.  def newOuterAccessor(clazz: Global.Symbol): Global.MethodSymbol
29.  def newOuterField(clazz: Global.Symbol): Global.TermSymbol
30.  def newPhase(prev: nsc.Phase): StdPhase

    Create a new phase which applies transformer

    Create a new phase which applies transformer

    Definition Classes
      ExplicitOuter → InfoTransform → Transform → SubComponent
31.  def newRootLocalTyper(unit: Global.CompilationUnit): (analyzer)#Typer
    Attributes
      protected
    Definition Classes
      TypingTransformers
32.  def newTransformer(unit: Global.CompilationUnit): Global.AstTransformer

    The transformer factory

    The transformer factory

    Attributes
      protected
    Definition Classes
      ExplicitOuter → Transform
33.  final def notify(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
34.  final def notifyAll(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
35.  def outerAccessor(clazz: Global.Symbol): Global.Symbol
36.  def ownPhase: nsc.Phase

    The phase corresponding to this subcomponent in the current compiler run.

    The phase corresponding to this subcomponent in the current compiler run.

    Definition Classes
      SubComponent
37.  val phaseName: String

    the name of the phase:

    the name of the phase:

    Definition Classes
      ExplicitOuter → SubComponent
38.  def phaseNewFlags: Long

    The following flags may be set by this phase:

    The following flags may be set by this phase:

    Definition Classes
      ExplicitOuter → SubComponent
39.  def phaseNextFlags: Long

    New flags defined by the phase which are not valid until immediately after it

    New flags defined by the phase which are not valid until immediately after it

    Definition Classes
      SubComponent
40.  val requires: List[String]

    Names of phases required by this component.

    Names of phases required by this component. Default is `Nil`.

    Definition Classes
      SubComponent
41.  val runsBefore: List[String]

    Names of phases that must run after this phase.

    Names of phases that must run after this phase. Default is `Nil`.

    Definition Classes
      SubComponent
42.  final def synchronized[T0](arg0: => T0): T0
    Definition Classes
      AnyRef
43.  val terminal: Boolean

    True if this phase runs after all other phases.

    True if this phase runs after all other phases. Usually, `terminal`.

    Definition Classes
      SubComponent
44.  def toString(): String
    Definition Classes
      AnyRef → Any
45.  def transformInfo(sym: Global.Symbol, tp: Global.Type): Global.Type

    The type transformation method:

    The type transformation method:

    - Add an outer parameter to the formal parameters of a constructor in an inner non-trait class;

    - Add a protected $outer field to an inner class which is not a trait.

    -

    Add an outer accessor $outer$$C to every inner class with fully qualified name C that is not an interface. The outer accessor is abstract for traits, concrete for other classes.

    3a. Also add overriding accessor defs to every class that inherits mixin classes with outer accessor defs (unless the superclass already inherits the same mixin).

    - Make all super accessors and modules in traits non-private, mangling their names.

    - Remove protected flag from all members of traits.

    Note: this transformInfo need not be reflected as the JVM reflection already elides outer pointers.

    Definition Classes
      ExplicitOuter → InfoTransform
46.  final def wait(): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.InterruptedException])
47.  final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.InterruptedException])
48.  final def wait(arg0: Long): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.InterruptedException]) @native()

### Deprecated Value Members

1.  def formatted(fmtstr: String): String
   Implicit
     This member is added by an implicit conversion from ExplicitOuter toStringFormat[ExplicitOuter] performed by method StringFormat in scala.Predef.
   Definition Classes
     StringFormat
   Annotations
     @deprecated @inline()
   Deprecated

     (Since version 2.12.16) Use `formatString.format(value)` instead of `value.formatted(formatString)`, or use the `f""` string interpolator. In Java 15 and later, `formatted` resolves to the new method in String which has reversed parameters.

2.  def →[B](y: B): (ExplicitOuter, B)
   Implicit
     This member is added by an implicit conversion from ExplicitOuter toArrowAssoc[ExplicitOuter] performed by method ArrowAssoc in scala.Predef.
   Definition Classes
     ArrowAssoc
   Annotations
     @deprecated
   Deprecated

     (Since version 2.13.0) Use `->` instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

### Inherited from TreeDSL

### Inherited from TypingTransformers

### Inherited from InfoTransform

### Inherited from Transform

### Inherited from SubComponent

### Inherited from AnyRef

### Inherited from Any

### Inherited by implicit conversion any2stringadd fromExplicitOuter to any2stringadd[ExplicitOuter]

### Inherited by implicit conversion StringFormat fromExplicitOuter to StringFormat[ExplicitOuter]

### Inherited by implicit conversion Ensuring fromExplicitOuter to Ensuring[ExplicitOuter]

### Inherited by implicit conversion ArrowAssoc fromExplicitOuter to ArrowAssoc[ExplicitOuter]

### Ungrouped