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scala3-compiler-bootstrapped/dotty.tools/dotty.tools.dotc/dotty.tools.dotc.cc/ConservativeFollowAliasMap

ConservativeFollowAliasMap

dotty.tools.dotc.cc.ConservativeFollowAliasMap
trait ConservativeFollowAliasMap(using x$1: Context) extends TypeMap

Offers utility method to be used for type maps that follow aliases

Attributes

Graph
Supertypes
class TypeMap
trait Type => Type
class Object
trait Matchable
class Any
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Members list

Value members

Concrete methods

protected def applyToAlias(original: Type, mapped: Type): Type

If mapped is a type alias, apply the map to the alias, while keeping annotations. If the result is different, return it, otherwise return mapped. Furthermore, if original is a LazyRef or TypeVar and the mapped result is the same as the underlying type, keep original. This avoids spurious differences which would lead to spurious dealiasing in the result

If mapped is a type alias, apply the map to the alias, while keeping annotations. If the result is different, return it, otherwise return mapped. Furthermore, if original is a LazyRef or TypeVar and the mapped result is the same as the underlying type, keep original. This avoids spurious differences which would lead to spurious dealiasing in the result

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Inherited methods

def andThen(f: Type => Type): TypeMap

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Inherited from:
TypeMap
def andThen[A](g: Type => A): Type => A

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Inherited from:
Function1
inline protected def atVariance[T](v: Int)(op: => T): T

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Inherited from:
VariantTraversal
def compose[A](g: A => Type): A => Type

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Inherited from:
Function1
protected def derivedAlias(tp: AliasingBounds, alias: Type): Type

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Inherited from:
TypeMap
protected def derivedAndType(tp: AndType, tp1: Type, tp2: Type): Type

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Inherited from:
TypeMap
protected def derivedAnnotatedType(tp: AnnotatedType, underlying: Type, annot: Annotation): Type

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Inherited from:
TypeMap
protected def derivedAppliedType(tp: AppliedType, tycon: Type, args: List[Type]): Type

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Inherited from:
TypeMap
protected def derivedCapturingType(tp: Type, parent: Type, refs: CaptureSet): Type

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Inherited from:
TypeMap
protected def derivedClassInfo(tp: ClassInfo, pre: Type): Type

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Inherited from:
TypeMap
protected def derivedExprType(tp: ExprType, restpe: Type): Type

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Inherited from:
TypeMap
protected def derivedFlexibleType(tp: FlexibleType, hi: Type): Type

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Inherited from:
TypeMap
protected def derivedJavaArrayType(tp: JavaArrayType, elemtp: Type): Type

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Inherited from:
TypeMap
protected def derivedLambdaType(tp: LambdaType)(formals: List[tp.PInfo], restpe: Type): Type

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Inherited from:
TypeMap
protected def derivedMatchType(tp: MatchType, bound: Type, scrutinee: Type, cases: List[Type]): Type

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Inherited from:
TypeMap
protected def derivedOrType(tp: OrType, tp1: Type, tp2: Type): Type

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Inherited from:
TypeMap
protected def derivedRecType(tp: RecType, parent: Type): Type

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Inherited from:
TypeMap
protected def derivedRefinedType(tp: RefinedType, parent: Type, info: Type): Type

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Inherited from:
TypeMap
protected def derivedSelect(tp: NamedType, pre: Type): Type

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Inherited from:
TypeMap
protected def derivedSkolemType(tp: SkolemType, info: Type): Type

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Inherited from:
TypeMap
protected def derivedSuperType(tp: SuperType, thistp: Type, supertp: Type): Type

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Inherited from:
TypeMap
protected def derivedTypeBounds(tp: TypeBounds, lo: Type, hi: Type): Type

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Inherited from:
TypeMap
protected def derivedWildcardType(tp: WildcardType, bounds: Type): Type

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Inherited from:
TypeMap
def isRange(tp: Type): Boolean

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Inherited from:
TypeMap
protected def isStaticPrefix(pre: Type)(using Context): Boolean

Can the prefix of this static reference be omitted if the reference itself can be omitted? Overridden in TypeOps#avoid.

Can the prefix of this static reference be omitted if the reference itself can be omitted? Overridden in TypeOps#avoid.

Attributes

Inherited from:
VariantTraversal
protected def mapArg(arg: Type, tparam: ParamInfo): Type

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Inherited from:
TypeMap
protected def mapArgs(args: List[Type], tparams: List[ParamInfo]): List[Type]

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Inherited from:
TypeMap
protected def mapCapturingType(tp: Type, parent: Type, refs: CaptureSet, v: Int): Type

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Inherited from:
TypeMap
protected def mapClassInfo(tp: ClassInfo): Type

Can be overridden. By default, only the prefix is mapped.

Can be overridden. By default, only the prefix is mapped.

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Inherited from:
TypeMap
protected def mapConserveSuper(t: TypeProxy): Type

Utility method. Maps the supertype of a type proxy. Returns the type proxy itself if the mapping leaves the supertype unchanged. This avoids needless changes in mapped types.

Utility method. Maps the supertype of a type proxy. Returns the type proxy itself if the mapping leaves the supertype unchanged. This avoids needless changes in mapped types.

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Inherited from:
TypeMap
def mapOver(tree: Tree): Tree

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Inherited from:
TypeMap
def mapOver(scope: Scope): Scope

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Inherited from:
TypeMap
def mapOver(syms: List[Symbol]): List[Symbol]

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Inherited from:
TypeMap
def mapOver(tp: Type): Type

Map this function over given type

Map this function over given type

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Inherited from:
TypeMap
protected def mapOverLambda(tp: LambdaType): Type

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Inherited from:
TypeMap
protected def mapOverTypeVar(tp: TypeVar): Type

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Inherited from:
TypeMap
protected def stopAt: StopAt

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Inherited from:
VariantTraversal
protected def stopBecauseStaticOrLocal(tp: NamedType)(using Context): Boolean

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Inherited from:
VariantTraversal
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
TypeMap -> Function1 -> Any
Inherited from:
TypeMap
protected def tyconTypeParams(tp: AppliedType)(using Context): List[ParamInfo]

The type parameters of the constructor of this applied type. Overridden in OrderingConstraint's ConstraintAwareTraversal to take account of instantiations in the constraint that are not yet propagated to the instance types of type variables.

The type parameters of the constructor of this applied type. Overridden in OrderingConstraint's ConstraintAwareTraversal to take account of instantiations in the constraint that are not yet propagated to the instance types of type variables.

Attributes

Inherited from:
VariantTraversal

Inherited and Abstract methods

def apply(tp: Type): Type

Attributes

Inherited from:
TypeMap

Implicits

Inherited implicits

implicit protected val mapCtx: Context

Attributes

Inherited from:
TypeMap
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Copyright (c) 2002-2025, LAMP/EPFL
Copyright (c) 2002-2025, LAMP/EPFL