Scala Compiler 2.13.16 - scala.tools.nsc.transform.InfoTransform
Keywords: Scala Compiler 2.13.16 scala.tools.nsc.transform.InfoTransform

Scala Compiler2.13.16 < 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

t

scala.tools.nsc.transform

# InfoTransform

###

#### trait InfoTransform extends SubComponent with Transform

An InfoTransform contains a compiler phase that transforms trees and symbol infos -- making sure they stay consistent. The symbol info is transformed assuming it is consistent right before this phase. The info transformation is triggered by Symbol::rawInfo, which caches the results in the symbol's type history. This way sym.info (during an enteringPhase(p)) can look up what the symbol's info should look like at the beginning of phase p. (If the transformed info had not been stored yet, rawInfo will compute the info by composing the info-transformers of the most recent phase before p, up to the transformer of the phase right before p.)

Concretely, enteringPhase(p) { sym.info } yields the info *before* phase p has transformed it. Imagine you're a phase and it all makes sense.

Source
  InfoTransform.scala

Linear Supertypes
Transform, SubComponent, AnyRef, Any
Known Subclasses
erasure, explicitOuter, fields, flatten, lambdaLift, postErasure, specializeTypes, uncurry, Erasure, ExplicitOuter, Fields, Flatten, LambdaLift, PostErasure, SpecializeTypes, UnCurry
Type Hierarchy

Ordering

1. Alphabetic
2. By Inheritance

Inherited

1. InfoTransform
2. Transform
3. SubComponent
4. AnyRef
5. 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

### Type Members

1.  abstract class StdPhase extends GlobalPhase

   A standard phase template

   A standard phase template

   Definition Classes
     SubComponent
2.  final type InfoPhase = Phase
   Annotations
     @nowarn()

### Deprecated Type Members

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

     (Since version 2.13.4) use InfoPhase instead

### Abstract Value Members

1.  abstract val global: Global

   The global environment; overridden by instantiation in Global.

   The global environment; overridden by instantiation in Global.

   Definition Classes
     SubComponent
2.  abstract def newTransformer(unit: Global.CompilationUnit): Global.AstTransformer

   The transformer factory

   The transformer factory

   Attributes
     protected
   Definition Classes
     Transform
3.  abstract val phaseName: String

   The name of the phase

   The name of the phase

   Definition Classes
     SubComponent
4.  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
5.  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
6.  abstract def transformInfo(sym: Global.Symbol, tpe: Global.Type): Global.Type

### 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 InfoTransform toany2stringadd[InfoTransform] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd
4.  def ->[B](y: B): (InfoTransform, B)
   Implicit
     This member is added by an implicit conversion from InfoTransform toArrowAssoc[InfoTransform] performed by method ArrowAssoc in scala.Predef.
   Definition Classes
     ArrowAssoc
   Annotations
     @inline()
5.  final def ==(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
6.  final def afterOwnPhase[T](op: => T): T
   Definition Classes
     SubComponent
   Annotations
     @inline()
7.  final def asInstanceOf[T0]: T0
   Definition Classes
     Any
8.  final def beforeOwnPhase[T](op: => T): T
   Definition Classes
     SubComponent
   Annotations
     @inline()
9.  def changesBaseClasses: Boolean
   Attributes
     protected
10.  def clone(): AnyRef
    Attributes
      protected[lang]
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.CloneNotSupportedException]) @native()
11.  def enabled: Boolean

    Is this component enabled? Default is true.

    Is this component enabled? Default is true.

    Definition Classes
      SubComponent
12.  def ensuring(cond: (InfoTransform) => Boolean, msg: => Any): InfoTransform
    Implicit
      This member is added by an implicit conversion from InfoTransform toEnsuring[InfoTransform] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
13.  def ensuring(cond: (InfoTransform) => Boolean): InfoTransform
    Implicit
      This member is added by an implicit conversion from InfoTransform toEnsuring[InfoTransform] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
14.  def ensuring(cond: Boolean, msg: => Any): InfoTransform
    Implicit
      This member is added by an implicit conversion from InfoTransform toEnsuring[InfoTransform] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
15.  def ensuring(cond: Boolean): InfoTransform
    Implicit
      This member is added by an implicit conversion from InfoTransform toEnsuring[InfoTransform] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
16.  final def eq(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
17.  def equals(other: Any): Boolean
    Definition Classes
      SubComponent → AnyRef → Any
18.  def finalize(): Unit
    Attributes
      protected[lang]
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.Throwable])
19.  final def getClass(): Class[_ <: AnyRef]
    Definition Classes
      AnyRef → Any
    Annotations
      @native()
20.  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
21.  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
22.  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
23.  final def isInstanceOf[T0]: Boolean
    Definition Classes
      Any
24.  def keepsTypeParams: Boolean
    Attributes
      protected
25.  final def ne(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
26.  def newPhase(prev: nsc.Phase): StdPhase

    Create a new phase which applies transformer

    Create a new phase which applies transformer

    Definition Classes
      InfoTransform → Transform → SubComponent
27.  final def notify(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
28.  final def notifyAll(): Unit
    Definition Classes
      AnyRef
    Annotations
      @native()
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.  def phaseNewFlags: Long

    New flags defined by the phase which are not valid before

    New flags defined by the phase which are not valid before

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

    Names of phases required by this component.

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

    Definition Classes
      SubComponent
33.  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
34.  final def synchronized[T0](arg0: => T0): T0
    Definition Classes
      AnyRef
35.  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
36.  def toString(): String
    Definition Classes
      AnyRef → Any
37.  final def wait(): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.InterruptedException])
38.  final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.InterruptedException])
39.  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 InfoTransform toStringFormat[InfoTransform] 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): (InfoTransform, B)
   Implicit
     This member is added by an implicit conversion from InfoTransform toArrowAssoc[InfoTransform] 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 Transform

### Inherited from SubComponent

### Inherited from AnyRef

### Inherited from Any

### Inherited by implicit conversion any2stringadd fromInfoTransform to any2stringadd[InfoTransform]

### Inherited by implicit conversion StringFormat fromInfoTransform to StringFormat[InfoTransform]

### Inherited by implicit conversion Ensuring fromInfoTransform to Ensuring[InfoTransform]

### Inherited by implicit conversion ArrowAssoc fromInfoTransform to ArrowAssoc[InfoTransform]

### Ungrouped