DropBreaks

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

If tree is a BreakBoundary, associate a fresh LabelUsage with its label.

Need to suppress labeled returns if there is an intervening try

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

Rewrite a break call

break.apply...(using lbl)

where lbl is a label defined in the current method and is not included in ShadowedLabels to

return[target] arg

where target is the goto return label associated with lbl. Adjust associated ref counts accordingly. The local refcount is increased and the non-local refcount is decreased, since the lbl implicit argument to break is dropped.

If tree is a BreakBoundary, transform it as follows:

• Wrap it in a labeled block if its label has local uses
• Drop the try/catch if its label has no other uses

If tree refers to an enclosing label, increase its non local recount. This increase is corrected in transformInlined if the reference turns out to be part of a BreakThrow to a local, non-shadowed label.

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).

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

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

Returns a string representation of the object.

The default representation is platform dependent.

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