diff options
Diffstat (limited to 'src/dotty/tools/dotc/core/TyperState.scala')
| -rw-r--r-- | src/dotty/tools/dotc/core/TyperState.scala | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/dotty/tools/dotc/core/TyperState.scala b/src/dotty/tools/dotc/core/TyperState.scala index f46c58c90..455320ba8 100644 --- a/src/dotty/tools/dotc/core/TyperState.scala +++ b/src/dotty/tools/dotc/core/TyperState.scala @@ -41,6 +41,9 @@ class TyperState(val reporter: Reporter) extends DotClass with Showable { /** Is it allowed to commit this state? */ def isCommittable: Boolean = false + /** Can this state be transitively committed until the top-level? */ + def isGlobalCommittable: Boolean = false + override def toText(printer: Printer): Text = "ImmutableTyperState" } @@ -55,6 +58,10 @@ extends TyperState(reporter) { override def fresh(isCommittable: Boolean): TyperState = new MutableTyperState(this, new StoreReporter, isCommittable) + override val isGlobalCommittable = + isCommittable && + (!previous.isInstanceOf[MutableTyperState] || previous.isGlobalCommittable) + /** Commit typer state so that its information is copied into current typer state * In addition (1) the owning state of undetermined or temporarily instantiated * type variables changes from this typer state to the current one. (2) Variables |