scala3-compiler-bootstrapped/dotty.tools.dotc.transform/PostTyper

PostTyper

class PostTyper extends MacroTransform with IdentityDenotTransformer

A macro transform that runs immediately after typer and that performs the following functions:

(1) Add super accessors (@see SuperAccessors)

(2) Convert parameter fields that have the same name as a corresponding public parameter field in a superclass to a forwarder to the superclass field (corresponding = super class field is initialized with subclass field)

See also:

forwardParamAccessors. (3) Add synthetic members (@see SyntheticMembers) (4) Check that New nodes can be instantiated, and that annotations are valid (5) Convert all trees representing types to TypeTrees. (6) Check the bounds of AppliedTypeTrees (7) Insert .package for selections of package object members (8) Replaces self references by name with this (9) Adds SourceFile annotations to all top-level classes and objects (10) Adds Child annotations to all sealed classes (11) Minimizes call fields of Inlined nodes to just point to the toplevel class from which code was inlined. The reason for making this a macro transform is that some functions (in particular super and protected accessors and instantiation checks) are naturally top-down and don't lend themselves to the bottom-up approach of a mini phase. The other two functions (forwarding param accessors and synthetic methods) only apply to templates and fit mini-phase or subfunction of a macro phase equally well. But taken by themselves they do not warrant their own group of miniphases before pickling.

Companion:
object
class Phase
class Object
trait Matchable
class Any

Type members

Classlikes

class PostTyperTransformer extends Transformer

Inherited classlikes

class Transformer extends TreeMapWithPreciseStatContexts
Inherited from:
MacroTransform

Value members

Concrete methods

override def changesMembers: Boolean

Can this transform create or delete non-private members?

Can this transform create or delete non-private members?

Definition Classes
override 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.

Definition Classes
override def description: String
Definition Classes
override 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
Definition Classes
override def transformPhase(using Context): Phase

The phase in which the transformation should be run. By default this is the phase given by the this macro transformer, but it could be overridden to be the phase following that one.

The phase in which the transformation should be run. By default this is the phase given by the this macro transformer, but it could be overridden to be the phase following that one.

Definition Classes

Inherited methods

final def <=(that: Phase): Boolean
Inherited from:
Phase
def allowsImplicitSearch: Boolean

If set, implicit search is enabled

If set, implicit search is enabled

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?

Inherited from:
Phase
def changesParents: Boolean

Can this transform change the parents of a class?

Can this transform change the parents of a class?

Inherited from:
Phase
def end: PhaseId
Inherited from:
Phase
final def erasedTypes: Boolean
Inherited from:
Phase
def exists: Boolean
Inherited from:
Phase
final def flatClasses: Boolean
Inherited from:
Phase
final def hasNext: Boolean
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.

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

Output should be checkable by TreeChecker

Output should be checkable by TreeChecker

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

Inherited from:
Phase
final def iterator: Iterator[Phase]
Inherited from:
Phase
final def lambdaLifted: Boolean
Inherited from:
Phase
def lastPhaseId(using Context): Int

The last phase during which the transformed denotations are valid

The last phase during which the transformed denotations are valid

Inherited from:
DenotTransformer
final def monitor(doing: String)(body: => Unit)(using Context): Unit
Inherited from:
Phase
final def next: Phase
Inherited from:
Phase
final def patternTranslated: Boolean
Inherited from:
Phase
def period: Period
Inherited from:
Phase
final def prev: Phase
Inherited from:
Phase
final def prevMega(using Context): Phase
Inherited from:
Phase
final def refChecked: Boolean
Inherited from:
Phase
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.

Inherited from:
Phase
override def run(using Context): Unit
Definition Classes
Inherited from:
MacroTransform
def runOn(units: List[CompilationUnit])(using Context): List[CompilationUnit]
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

Inherited from:
Phase
final def sameBaseTypesStartId: Int
Inherited from:
Phase
final def sameMembersStartId: Int
Inherited from:
Phase
final def sameParentsStartId: Int
Inherited from:
Phase
def start: Int
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.

Returns:

a string representation of the object.

Definition Classes
Phase -> Any
Inherited from:
Phase
def transform(ref: SingleDenotation)(using Context): SingleDenotation

The transformation method

The transformation method

Inherited from:
IdentityDenotTransformer
def validFor(using Context): Period

The validity period of the transformed denotations in the given context

The validity period of the transformed denotations in the given context

Inherited from:
DenotTransformer

Concrete fields