scala3-compiler-bootstrapped
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scala3-compiler-bootstrapped/dotty.tools/dotty.tools.dotc/dotty.tools.dotc.transform/MegaPhase/MiniPhase

MiniPhase

dotty.tools.dotc.transform.MegaPhase.MiniPhase
abstract class MiniPhase extends Phase

The base class of tree transforms. For each kind of tree K, there are two methods which can be overridden:

prepareForK: return a new Context which gets passed to the node and its children transformK // transform node of type K

There are also prepare/transform hooks for

  • Stats: to prepare/transform a statement sequence in a block, template, or package def,
  • Unit : to prepare/transform a whole compilation unit
  • Other: to prepare/transform a tree that does not have a specific prepare/transform method pair.

Attributes

Graph
Supertypes
class Phase
class Object
trait Matchable
class Any
Known subtypes
trait PluginPhase
class ArrayApply
class BetaReduce
class CapturedVars
class CheckStatic
class CheckUnused
class PostInlining
class PostTyper
class Constructors
class CookComments
class DropBreaks
class ElimByName
class ElimOpaque
class ElimRepeated
class EtaReduce
class ExpandSAMs
class ExplicitSelf
class Flatten
class Getters
class InlineVals
class LambdaLift
class LazyVals
class LetOverApply
class Memoize
class Mixin
class MoveStatics
class PureStats
class ResolveSuper
class SelectStatic
class SeqLiterals
class TailRec
class RefChecks
Show all

Members list

Value members

Concrete methods

def prepareForApply(tree: Apply)(using Context): Context
def prepareForAssign(tree: Assign)(using Context): Context
def prepareForBind(tree: Bind)(using Context): Context
def prepareForBlock(tree: Block)(using Context): Context
def prepareForDefDef(tree: DefDef)(using Context): Context
def prepareForIdent(tree: Ident)(using Context): Context
def prepareForIf(tree: If)(using Context): Context
def prepareForMatch(tree: Match)(using Context): Context
def prepareForNew(tree: New)(using Context): Context
def prepareForOther(tree: Tree)(using Context): Context
def prepareForQuote(tree: Quote)(using Context): Context
def prepareForReturn(tree: Return)(using Context): Context
def prepareForSelect(tree: Select)(using Context): Context
def prepareForSplice(tree: Splice)(using Context): Context
def prepareForStats(trees: List[Tree])(using Context): Context
def prepareForSuper(tree: Super)(using Context): Context
def prepareForThis(tree: This)(using Context): Context
def prepareForTry(tree: Try)(using Context): Context
def prepareForTyped(tree: Typed)(using Context): Context
def prepareForUnit(tree: Tree)(using Context): Context
def prepareForValDef(tree: ValDef)(using Context): Context
final override def relaxedTyping: Boolean

If set, allow missing or superfluous arguments in applications and type applications.

If set, allow missing or superfluous arguments in applications and type applications.

Attributes

Definition Classes
def relaxedTypingInGroup: Boolean

If set, use relaxed typing for all phases in group

If set, use relaxed typing for all phases in group

Attributes

override def run(using Context): Unit

Attributes

Definition Classes
def runsAfterGroupsOf: Set[String]

List of names of phases that should have finished their processing of all compilation units before this phase starts

List of names of phases that should have finished their processing of all compilation units before this phase starts

Attributes

protected def singletonGroup: MegaPhase
def transformAllDeep(tree: Tree)(using Context): Tree

Transform tree using all transforms of current group (including this one)

Transform tree using all transforms of current group (including this one)

Attributes

def transformApply(tree: Apply)(using Context): Tree
def transformAssign(tree: Assign)(using Context): Tree
def transformBind(tree: Bind)(using Context): Tree
def transformBlock(tree: Block)(using Context): Tree
def transformCaseDef(tree: CaseDef)(using Context): Tree
def transformClosure(tree: Closure)(using Context): Tree
def transformDefDef(tree: DefDef)(using Context): Tree
def transformFollowing(tree: Tree)(using Context): Tree

Transform single node using all transforms following the current one in this group

Transform single node using all transforms following the current one in this group

Attributes

def transformFollowingDeep(tree: Tree)(using Context): Tree

Transform tree using all transforms following the current one in this group

Transform tree using all transforms following the current one in this group

Attributes

def transformIdent(tree: Ident)(using Context): Tree
def transformIf(tree: If)(using Context): Tree
def transformInlined(tree: Inlined)(using Context): Tree
def transformLabeled(tree: Labeled)(using Context): Tree
def transformLiteral(tree: Literal)(using Context): Tree
def transformMatch(tree: Match)(using Context): Tree
def transformNew(tree: New)(using Context): Tree
def transformOther(tree: Tree)(using Context): Tree
def transformQuote(tree: Quote)(using Context): Tree
def transformReturn(tree: Return)(using Context): Tree
def transformSelect(tree: Select)(using Context): Tree
def transformSplice(tree: Splice)(using Context): Tree
def transformStats(trees: List[Tree])(using Context): List[Tree]
def transformSuper(tree: Super)(using Context): Tree
def transformTemplate(tree: Template)(using Context): Tree
def transformThis(tree: This)(using Context): Tree
def transformTry(tree: Try)(using Context): Tree
def transformTypeDef(tree: TypeDef)(using Context): Tree
def transformTypeTree(tree: TypeTree)(using Context): Tree
def transformTyped(tree: Typed)(using Context): Tree
def transformUnApply(tree: UnApply)(using Context): Tree
def transformUnit(tree: Tree)(using Context): Tree
def transformValDef(tree: ValDef)(using Context): Tree
def transformWhileDo(tree: WhileDo)(using Context): Tree

Inherited methods

final def <=(that: Phase): Boolean

Attributes

Inherited from:
Phase
def allowsImplicitSearch: Boolean

If set, implicit search is enabled

If set, implicit search is enabled

Attributes

Inherited from:
Phase
final def cancellable(body: Context ?=> Unit)(using Context): Boolean

Do not run if compile progress has been cancelled

Do not run if compile progress has been cancelled

Attributes

Inherited from:
Phase
def changesBaseTypes: Boolean

Can this transform change the base types of a type?

Can this transform change the base types of a type?

Attributes

Inherited from:
Phase
def changesMembers: Boolean

Can this transform create or delete non-private members?

Can this transform create or delete non-private members?

Attributes

Inherited from:
Phase
def changesParents: Boolean

Can this transform change the parents of a class?

Can this transform change the parents of a class?

Attributes

Inherited from:
Phase
def checkPostCondition(tree: Tree)(using Context): Unit

Check what the phase achieves, to be called at any point after it is finished.

Check what the phase achieves, to be called at any point after it is finished.

Attributes

Inherited from:
Phase
def description: String

Attributes

Inherited from:
Phase
def end: PhaseId

Attributes

Inherited from:
Phase
final def erasedTypes: Boolean

Attributes

Inherited from:
Phase
def exists: Boolean

True for all phases except NoPhase

True for all phases except NoPhase

Attributes

Inherited from:
Phase
final def flatClasses: Boolean

Attributes

Inherited from:
Phase
final def hasNext: Boolean

Attributes

Inherited from:
Phase
def id: Int

The sequence position of this phase in the given context where 0 is reserved for NoPhase and the first real phase is at position 1. -1 if the phase is not installed in the context.

The sequence position of this phase in the given context where 0 is reserved for NoPhase and the first real phase is at position 1. -1 if the phase is not installed in the context.

Attributes

Inherited from:
Phase
def initContext(ctx: FreshContext): Unit

Attributes

Inherited from:
Phase
def isCheckable: Boolean

Output should be checkable by TreeChecker

Output should be checkable by TreeChecker

Attributes

Inherited from:
Phase
def isEnabled(using Context): Boolean

This property is queried when phases are first assembled. If it is false, the phase will be dropped from the set of phases to traverse.

This property is queried when phases are first assembled. If it is false, the phase will be dropped from the set of phases to traverse.

Attributes

Inherited from:
Phase
def isRunnable(using Context): Boolean

This property is queried before a phase is run. If it is false, the phase is skipped.

This property is queried before a phase is run. If it is false, the phase is skipped.

Attributes

Inherited from:
Phase
def isTyper: Boolean

Is this phase the standard typerphase? True for TyperPhase, but not for other first phases (such as FromTasty or Parser). The predicate is tested in some places that perform checks and corrections. It's different from ctx.isAfterTyper (and cheaper to test).

Is this phase the standard typerphase? True for TyperPhase, but not for other first phases (such as FromTasty or Parser). The predicate is tested in some places that perform checks and corrections. It's different from ctx.isAfterTyper (and cheaper to test).

Attributes

Inherited from:
Phase
final def iterator: Iterator[Phase]

Attributes

Inherited from:
Phase
final def lambdaLifted: Boolean

Attributes

Inherited from:
Phase
final def megaPhase(using Context): Phase

Attributes

Inherited from:
Phase
final def monitor(doing: String)(body: Context ?=> Unit)(using Context): Boolean

Cancellable region, if not cancelled, run the body in the context of the current compilation unit. Enrich crash messages.

Cancellable region, if not cancelled, run the body in the context of the current compilation unit. Enrich crash messages.

Attributes

Inherited from:
Phase
final def next: Phase

Attributes

Inherited from:
Phase
final def patternTranslated: Boolean

Attributes

Inherited from:
Phase
def period: Period

Attributes

Inherited from:
Phase
final def prev: Phase

Attributes

Inherited from:
Phase
def printingContext(ctx: Context): Context

A hook that allows to transform the usual context passed to the function that prints a compilation unit after a phase

A hook that allows to transform the usual context passed to the function that prints a compilation unit after a phase

Attributes

Inherited from:
Phase
final def refChecked: Boolean

Attributes

Inherited from:
Phase
def runOn(units: List[CompilationUnit])(using runCtx: Context): List[CompilationUnit]

Attributes

Inherited from:
Phase
inline def runSubPhase[T](id: SubPhase)(inline body: (SubPhase, Context) ?=> T)(using Context): T

Attributes

Inherited from:
Phase
def runsAfter: Set[String]

List of names of phases that should precede this phase

List of names of phases that should precede this phase

Attributes

Inherited from:
Phase
final def sameBaseTypesStartId: Int

Attributes

Inherited from:
Phase
final def sameMembersStartId: Int

Attributes

Inherited from:
Phase
final def sameParentsStartId: Int

Attributes

Inherited from:
Phase
def show(tree: Tree)(using Context): String

Convert a compilation unit's tree to a string; can be overridden

Convert a compilation unit's tree to a string; can be overridden

Attributes

Inherited from:
Phase
def skipIfJava(using Context): Boolean

skip the phase for a Java compilation unit, may depend on -Yjava-tasty

skip the phase for a Java compilation unit, may depend on -Yjava-tasty

Attributes

Inherited from:
Phase
def start: Int

Attributes

Inherited from:
Phase
def subPhases: List[SubPhase]

for purposes of progress tracking, overridden in TyperPhase

for purposes of progress tracking, overridden in TyperPhase

Attributes

Inherited from:
Phase
override def toString: String

Returns a string representation of the object.

Returns a string representation of the object.

The default representation is platform dependent.

Attributes

Returns

a string representation of the object.

Definition Classes
Phase -> Any
Inherited from:
Phase
final def traversals: Int

Attributes

Inherited from:
Phase

Inherited and Abstract methods

def phaseName: String

A name given to the Phase that can be used to debug the compiler. For instance, it is possible to print trees after a given phase using:

A name given to the Phase that can be used to debug the compiler. For instance, it is possible to print trees after a given phase using:

$ ./bin/scalac -Xprint:<phaseNameHere> sourceFile.scala

Attributes

Inherited from:
Phase

Concrete fields

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Copyright (c) 2002-2024, LAMP/EPFL
Copyright (c) 2002-2024, LAMP/EPFL