CapturedVars

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

The {Volatile|}{Int|Double|...|Object}Ref class corresponding to the class cls, depending on whether the reference should be @volatile

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

If assignment is to a boxed ref type, e.g.

intRef.elem = expr

rewrite using a temporary var to

val ev$n = expr
intRef.elem = ev$n

That way, we avoid the problem that expr might contain a try that would run on a non-empty stack (which is illegal under JVM rules). Note that LiftTry has already run before, so such trys would not be eliminated.

If the ref type lhs is followed by a cast (can be an artifact of nested translation), drop the cast.

If the ref type is ObjectRef or VolatileObjectRef, immediately assign null to the temporary to make the underlying target of the reference available for garbage collection. Nullification is omitted if the expr is already null.

var ev$n: RHS = expr
objRef.elem = ev$n
ev$n = null.asInstanceOf[RHS]

If set, implicit search is enabled

Can this transform change the base types of a type?

Can this transform create or delete non-private members?

Can this transform change the parents of a class?

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

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.

Output should be checkable by TreeChecker

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).

The last phase during which the transformed denotations are valid

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

If set, use relaxed typing for all phases in group

List of names of phases that should precede this phase

Returns a string representation of the object.

The default representation is platform dependent.

The transformation method

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

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

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

The validity period of the transformed denotations in the given context