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
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Type Members
- abstract class StdPhase extends GlobalPhase
A standard phase template
A standard phase template
- Definition Classes
- SubComponent
- final type InfoPhase = Phase
- Annotations
- @nowarn()
Deprecated Type Members
Abstract Value Members
- abstract val global: Global
The global environment; overridden by instantiation in Global.
The global environment; overridden by instantiation in Global.
- Definition Classes
- SubComponent
- abstract val phaseName: String
The name of the phase
The name of the phase
- Definition Classes
- SubComponent
- 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
- 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
- abstract def transformInfo(sym: Global.Symbol, tpe: Global.Type): Global.Type
Concrete Value Members
- final def afterOwnPhase[T](op: => T): T
- Definition Classes
- SubComponent
- Annotations
- @inline()
- final def beforeOwnPhase[T](op: => T): T
- Definition Classes
- SubComponent
- Annotations
- @inline()
- def enabled: Boolean
Is this component enabled? Default is true.
Is this component enabled? Default is true.
- Definition Classes
- SubComponent
- def equals(other: Any): Boolean
- Definition Classes
- SubComponent → AnyRef → Any
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- val requires: List[String]
Names of phases required by this component.
Names of phases required by this component. Default is
Nil
.- Definition Classes
- SubComponent
- 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
- 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
The Scala compiler and reflection APIs.