Scala Compiler2.12.0 < Back
 

# Packages

-  package root

  The Scala compiler API.

  The Scala compiler API.

  The following resources are useful for Scala plugin/compiler development:

  - Scala development tutorials on www.scala-lang.org
  - Scala Internals wiki
  - Scala compiler corner, maintained by Miguel
  Definition Classes
    root
-  package scala
  Definition Classes
    root
-  package tools
  Definition Classes
    scala
-  package nsc
  Definition Classes
    tools
-  class Global extends SymbolTable with CompilationUnits with Plugins with PhaseAssembly with Trees with Printers with DocComments with Positions with Reporting with Parsing
  Definition Classes
    nsc
- AbstractTypeRef
- AbstractTypeSymbol
- AliasTypeRef
- AliasTypeSymbol
- Alternative
- Alternative
- AlternativeApi
- AlternativeExtractor
- Annotatable
- Annotated
- Annotated
- AnnotatedApi
- AnnotatedExtractor
- AnnotatedType
- AnnotatedType
- AnnotatedTypeApi
- AnnotatedTypeExtractor
- AnnotationApi
- AnnotationChecker
- AnnotationExtractor
- AnnotationFilter
- AnnotationInfo
- AnnotationInfo
- AntiPolyType
- AppliedTypeTree
- AppliedTypeTree
- AppliedTypeTreeApi
- AppliedTypeTreeExtractor
- AppliedTypeVar
- Apply
- Apply
- ApplyApi
- ApplyDynamic
- ApplyExtractor
- ApplyImplicitView
- ApplyToImplicitArgs
- ApproximateDependentMap
- ArgsTypeRef
- ArrayAnnotArg
- ArrayAnnotArg
- ArrayArgumentApi
- ArrayArgumentExtractor
- ArrayValue
- AsSeenFromMap
- Assign
- Assign
- AssignApi
- AssignExtractor
- AssignOrNamedArg
- AssignOrNamedArg
- AssignOrNamedArgApi
- AssignOrNamedArgExtractor
- Attachable
- BackquotedIdentifierAttachment
- BaseTypeSeq
- Bind
- Bind
- BindApi
- BindExtractor
- Block
- Block
- BlockApi
- BlockExtractor
- BooleanFlag
- BooleanFlag
- BoundedWildcardType
- BoundedWildcardType
- BoundedWildcardTypeApi
- BoundedWildcardTypeExtractor
- CannotHaveAttrs
- CaseDef
- CaseDef
- CaseDefApi
- CaseDefExtractor
- ChangeOwnerTraverser
- ClassDef
- ClassDef
- ClassDefApi
- ClassDefExtractor
- ClassInfoType
- ClassInfoType
- ClassInfoTypeApi
- ClassInfoTypeExtractor
- ClassMirror
- ClassSymbol
- ClassSymbolApi
- ClassUnwrapper
- ClassfileAnnotArg
- CodePrinter
- CollectTreeTraverser
- CollectTypeCollector
- CommonNames
- CommonOwnerMap
- CompactTreePrinter
- CompatApi
- CompatToken
- CompilationUnit
- CompilationUnitContextApi
- CompleteAnnotationInfo
- CompoundType
- CompoundType
- CompoundTypeApi
- CompoundTypeTree
- CompoundTypeTree
- CompoundTypeTreeApi
- CompoundTypeTreeExtractor
- CompoundTypeTreeOriginalAttachment
- ConsoleWriter
- Constant
- Constant
- ConstantApi
- ConstantExtractor
- ConstantType
- ConstantType
- ConstantTypeApi
- ConstantTypeExtractor
- ContainsCollector
- CyclicReference
- DefDef
- DefDef
- DefDefApi
- DefDefExtractor
- DefTree
- DefTreeApi
- DefaultPosAssigner
- DefinitionsApi
- DefinitionsClass
- DelambdafyTarget
- DocComment
- DocDef
- EmptyScope
- EmptyTree
- ErasedValueType
- ErasedValueType
- ErroneousAnnotation
- ErrorScope
- ErrorType
- ExistentialExtrapolation
- ExistentialType
- ExistentialType
- ExistentialTypeApi
- ExistentialTypeExtractor
- ExistentialTypeTree
- ExistentialTypeTree
- ExistentialTypeTreeApi
- ExistentialTypeTreeExtractor
- ExpansionLimitExceeded
- Expr
- Expr
- FieldMirror
- FilterTreeTraverser
- FilterTypeCollector
- FindTreeTraverser
- FindTypeCollector
- FixedMirrorTreeCreator
- FixedMirrorTypeCreator
- Flag
- FlagAgnosticCompleter
- FlagAssigningCompleter
- FlagOps
- FlagValues
- ForEachTypeTraverser
- ForeachPartialTreeTraverser
- ForeachTreeTraverser
- FreeSymbol
- FreeTermSymbol
- FreeTermSymbolApi
- FreeTypeSymbol
- FreeTypeSymbolApi
- FreshNameExtractor
- Function
- Function
- FunctionApi
- FunctionExtractor
- GenPolyType
- GenericApply
- GenericApplyApi
- GlobalMirror
- GlobalPhase
- GlobalPlatform
- HKTypeVar
- Ident
- Ident
- IdentApi
- IdentExtractor
- If
- If
- IfApi
- IfExtractor
- ImplDef
- ImplDefApi
- Import
- Import
- ImportApi
- ImportExtractor
- ImportSelector
- ImportSelector
- ImportSelectorApi
- ImportSelectorExtractor
- ImportType
- ImportableAttachment
- Importer
- InfoTransformer
- InjectDerivedValue
- InlineAnnotatedAttachment
- InlineCallsiteAttachment
- InstanceMirror
- InstantiateDependentMap
- InternalApi
- InternalTreeCopierOps
- JavaArgumentApi
- JavaKeywords
- JavaMethodType
- KeepOnlyTypeConstraints
- Keywords
- Kind
- Kind
- KindErrors
- LabelDef
- LabelDef
- LabelDefApi
- LabelDefExtractor
- LazyAnnotationInfo
- LazyPolyType
- LazyTreeCopier
- LazyType
- Liftable
- Literal
- Literal
- LiteralAnnotArg
- LiteralAnnotArg
- LiteralApi
- LiteralArgumentApi
- LiteralArgumentExtractor
- LiteralExtractor
- Locator
- LookupAmbiguous
- LookupInaccessible
- LookupNotFound
- LookupSucceeded
- MacroCompatApi
- MacroInternalApi
- MalformedType
- MappedBaseTypeSeq
- Match
- Match
- MatchApi
- MatchExtractor
- MemberDef
- MemberDefApi
- MemberScopeApi
- MethodMirror
- MethodSymbol
- MethodSymbolApi
- MethodType
- MethodType
- MethodTypeApi
- MethodTypeExtractor
- Mirror
- MissingAliasControl
- MissingTypeControl
- Modifiers
- Modifiers
- ModifiersApi
- ModifiersExtractor
- ModuleClassSymbol
- ModuleDef
- ModuleDef
- ModuleDefApi
- ModuleDefExtractor
- ModuleMirror
- ModuleSymbol
- ModuleSymbolApi
- ModuleTypeRef
- Name
- NameApi
- NameLookup
- NameOps
- NameTree
- NameTreeApi
- NamedType
- NamesApi
- NestedAnnotArg
- NestedAnnotArg
- NestedArgumentApi
- NestedArgumentExtractor
- New
- New
- NewApi
- NewExtractor
- NoArgsTypeRef
- NoCommonType
- NoCompilationUnit
- NoInlineCallsiteAttachment
- NoPrefix
- NoSymbol
- NoType
- NonClassTypeRef
- NullaryMethodType
- NullaryMethodType
- NullaryMethodTypeApi
- NullaryMethodTypeExtractor
- OuterArgCanBeElided
- OverloadedType
- PackageClassInfoType
- PackageClassSymbol
- PackageDef
- PackageDef
- PackageDefApi
- PackageDefExtractor
- PackageObjectClassSymbol
- PackageTypeRef
- Parens
- PerRunParsing
- PerRunReporting
- PerRunReportingBase
- PlainAttachment
- PolyType
- PolyType
- PolyTypeApi
- PolyTypeExtractor
- PosAssigner
- PostfixSelect
- ProperTypeKind
- Quasiquote
- Range
- RawTreePrinter
- RecoverableCyclicReference
- RefTree
- RefTree
- RefTreeApi
- RefTreeExtractor
- ReferenceToBoxed
- ReferenceToBoxed
- ReferenceToBoxedApi
- ReferenceToBoxedExtractor
- RefinedType
- RefinedType
- RefinedType0
- RefinedTypeApi
- RefinedTypeExtractor
- RefinementClassSymbol
- RefinementTypeRef
- ReflectiveMirror
- ReificationSupportApi
- ReificationSupportImpl
- RepeatedType
- Return
- Return
- ReturnApi
- ReturnExtractor
- RewrappingTypeProxy
- RootSymbol
- Roots
- RootsBase
- Run
- RunContextApi
- RunParsing
- RunReporting
- RuntimeClassApi
- RuntimeMirror
- SAMFunction
- ScalaSigBytes
- Scope
- Scope
- ScopeApi
- ScopeEntry
- Select
- Select
- SelectApi
- SelectExtractor
- SelectFromArray
- SelectFromTypeTree
- SelectFromTypeTree
- SelectFromTypeTreeApi
- SelectFromTypeTreeExtractor
- SimpleTypeProxy
- SingleType
- SingleType
- SingleTypeApi
- SingleTypeExtractor
- SingletonType
- SingletonTypeApi
- SingletonTypeTree
- SingletonTypeTree
- SingletonTypeTreeApi
- SingletonTypeTreeExtractor
- StandardImporter
- StandardLiftableInstances
- StandardTypes
- StandardUnliftableInstances
- Star
- Star
- StarApi
- StarExtractor
- StaticallyAnnotatedType
- StrictTreeCopier
- StubClassSymbol
- StubPackageClassSymbol
- StubSymbol
- StubTermSymbol
- SubType
- SubTypePair
- SubpatternsAttachment
- SubstMap
- SubstSymMap
- SubstThisMap
- SubstTypeMap
- SubstWildcardMap
- Super
- Super
- SuperApi
- SuperExtractor
- SuperType
- SuperType
- SuperTypeApi
- SuperTypeExtractor
- SymLoader
- SymTree
- SymTreeApi
- Symbol
- SymbolApi
- SymbolContextApiImpl
- SymbolNames
- SymbolOps
- SymbolTableInternal
- Template
- Template
- TemplateApi
- TemplateExtractor
- TemplateMirror
- TermName
- TermName
- TermNameApi
- TermNameExtractor
- TermNames
- TermNamesApi
- TermSymbol
- TermSymbolApi
- TermTree
- TermTreeApi
- This
- This
- ThisApi
- ThisExtractor
- ThisSubstituter
- ThisType
- ThisType
- ThisTypeApi
- ThisTypeExtractor
- Throw
- Throw
- ThrowApi
- ThrowExtractor
- ThrownException
- Transformer
- Traverser
- Tree
- TreeApi
- TreeContextApiImpl
- TreeCopier
- TreeCopierOps
- TreeGen
- TreePrinter
- TreeReplacer
- TreeStackTraverser
- TreeSubstituter
- TreeSymSubstTraverser
- TreeSymSubstituter
- TreeTypeSubstituter
- Try
- Try
- TryApi
- TryExtractor
- TypTree
- TypTreeApi
- Type
- TypeApi
- TypeApiImpl
- TypeApply
- TypeApply
- TypeApplyApi
- TypeApplyExtractor
- TypeBounds
- TypeBounds
- TypeBoundsApi
- TypeBoundsExtractor
- TypeBoundsTree
- TypeBoundsTree
- TypeBoundsTreeApi
- TypeBoundsTreeExtractor
- TypeCollector
- TypeConKind
- TypeConstraint
- TypeDef
- TypeDef
- TypeDefApi
- TypeDefExtractor
- TypeError
- TypeMap
- TypeMapTreeSubstituter
- TypeName
- TypeName
- TypeNameApi
- TypeNameExtractor
- TypeNames
- TypeNamesApi
- TypeRef
- TypeRef
- TypeRefApi
- TypeRefExtractor
- TypeSkolem
- TypeSymbol
- TypeSymbolApi
- TypeTag
- TypeTag
- TypeTraverser
- TypeTraverserWithResult
- TypeTree
- TypeTree
- TypeTreeApi
- TypeTreeExtractor
- TypeTreeWithDeferredRefCheck
- TypeUnwrapper
- TypeVar
- TypeVar
- Typed
- Typed
- TypedApi
- TypedExtractor
- TypedLocator
- UnApply
- UnApply
- UnApplyApi
- UnApplyExtractor
- UnderConstructionTransformer
- UndoLog
- UniqueConstantType
- UniqueErasedValueType
- UniqueSingleType
- UniqueSuperType
- UniqueThisType
- UniqueType
- UniqueTypeBounds
- Unliftable
- UntouchableTypeVar
- UseCase
- UseInvokeSpecial
- ValDef
- ValDef
- ValDefApi
- ValDefExtractor
- ValOrDefDef
- ValOrDefDef
- ValOrDefDefApi
- ValidateException
- ValidatingPosAssigner
- ValueClassDefinitions
- VarianceValidator
- WeakTypeTag
- WeakTypeTag
- WildcardType
- abstractTypesToBounds
- cleanup
- constfold
- constructors
- definitions
- delambdafy
- dropIllegalStarTypes
- erasure
- explicitOuter
- extensionMethods
- fields
- flatten
- gen
- genBCode
- icodes
- lambdaLift
- mixer
- nme
- noPrint
- noSelfType
- nodePrinters
- noopTransformer
- overridingPairs
- patmat
- pendingSuperCall
- perRunCaches
- pickler
- postErasure
- refChecks
- resetPos
- scalaPrimitives
- specializeTypes
- statistics
- superAccessors
- tailCalls
- terminal
- tpnme
- traceSymbols
- treeBrowsers
- treeChecker
- treeInfo
- typeDebug
- typeDeconstruct
- typer
- uncurry
- unwrapToClass
- unwrapToStableClass
- unwrapWrapperTypes
- wildcardExtrapolation

o

scala.tools.nsc.Global

# explicitOuter 

###

#### object explicitOuter extends ExplicitOuter

Source
  Global.scala

Linear Supertypes
ExplicitOuter, TreeDSL, TypingTransformers, InfoTransform, Transform, SubComponent, AnyRef, Any
Content Hierarchy
 
Ordering

1. Alphabetic
2. By Inheritance

Inherited

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

1. Hide All
2. Show All

Visibility

1. Public
2. All

### 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...).

   Definition Classes
     ExplicitOuter
3.  abstract class OuterPathTransformer extends TypingTransformer with Global.UnderConstructionTransformer

   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.

   Definition Classes
     ExplicitOuter
4.  class Phase extends ExplicitOuter.Phase
   Definition Classes
     ExplicitOuter
5.  class RemoveBindingsTransformer extends Global.Transformer
   Definition Classes
     ExplicitOuter
6.  abstract class TypingTransformer extends Global.Transformer
   Definition Classes
     TypingTransformers

### Value Members

1.  final def !=(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
2.  final def ##(): Int
   Definition Classes
     AnyRef → Any
3.  final def ==(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
4.  final def afterOwnPhase[T](op: ⇒ T): T
   Definition Classes
     SubComponent
   Annotations
     @inline()
5.  final def asInstanceOf[T0]: T0
   Definition Classes
     Any
6.  final def beforeOwnPhase[T](op: ⇒ T): T
   Definition Classes
     SubComponent
   Annotations
     @inline()
7.  def changesBaseClasses: Boolean

   This class does not change linearization

   This class does not change linearization

   Definition Classes
     ExplicitOuter → InfoTransform
8.  def clone(): AnyRef
   Attributes
     protected[java.lang]
   Definition Classes
     AnyRef
   Annotations
     @throws( ... )
9.  def enabled: Boolean

   Is this component enabled? Default is true.

   Is this component enabled? Default is true.

   Definition Classes
     SubComponent
10.  final def eq(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
11.  def equals(arg0: Any): Boolean
    Definition Classes
      AnyRef → Any
12.  def finalize(): Unit
    Attributes
      protected[java.lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( classOf[java.lang.Throwable] )
13.  final def getClass(): Class[_]
    Definition Classes
      AnyRef → Any
14.  val global: Global.this.type
    Definition Classes
      explicitOuter → TreeDSL → TypingTransformers → SubComponent
15.  def hasOuterField(clazz: Global.Symbol): Boolean

    Does given clazz define an outer field?

    Does given clazz define an outer field?

    Definition Classes
      ExplicitOuter
16.  def hashCode(): Int

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

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

    Definition Classes
      SubComponent → AnyRef → Any
17.  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
18.  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
19.  final def isInstanceOf[T0]: Boolean
    Definition Classes
      Any
20.  def keepsTypeParams: Boolean
    Attributes
      protected
    Definition Classes
      InfoTransform
21.  final def ne(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
22.  def newOuterAccessor(clazz: Global.Symbol): Global.MethodSymbol
    Definition Classes
      ExplicitOuter
23.  def newOuterField(clazz: Global.Symbol): Global.TermSymbol
    Definition Classes
      ExplicitOuter
24.  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
25.  def newTransformer(unit: Global.CompilationUnit): Global.Transformer

    The transformer factory

    The transformer factory

    Attributes
      protected
    Definition Classes
      ExplicitOuter → Transform
26.  final def notify(): Unit
    Definition Classes
      AnyRef
27.  final def notifyAll(): Unit
    Definition Classes
      AnyRef
28.  def outerAccessor(clazz: Global.Symbol): Global.Symbol
    Definition Classes
      ExplicitOuter
29.  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
30.  val phaseName: String

    the name of the phase:

    the name of the phase:

    Definition Classes
      ExplicitOuter → SubComponent
31.  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
32.  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
33.  val requires: List[String]

    Names of phases required by this component.

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

    Definition Classes
      SubComponent
34.  val runsAfter: collection.immutable.List[String]
    Definition Classes
      explicitOuter → SubComponent
35.  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
36.  val runsRightAfter: None.type
    Definition Classes
      explicitOuter → SubComponent
37.  final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
      AnyRef
38.  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
39.  def toString(): String
    Definition Classes
      AnyRef → Any
40.  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
41.  final def wait(): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
42.  final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
43.  final def wait(arg0: Long): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
44.  object CODE
    Definition Classes
      TreeDSL

### Inherited from ExplicitOuter

### Inherited from TreeDSL

### Inherited from TypingTransformers

### Inherited from InfoTransform

### Inherited from Transform

### Inherited from SubComponent

### Inherited from AnyRef

### Inherited from Any

### Ungrouped