VarState

Add element to hidden set, recording it in elemsMap, return whether this was allowed. By default, recording is allowed but the special state VarState.Separate overrides this.

The recorded dependent sets of v (it's required that a recording was made)

The recorded elements of v (it's required that a recording was made)

Optionally the recorded dependent sets of v, None if nothing was recorded for v

Optionally the recorded elements of v, None if nothing was recorded for v

Run test pred unless ref was seen in an enclosing ifNotSeen operation

Does this state allow additions of elements to capture set variables?

Record dependent sets, return whether this was allowed. By default, recording is allowed in regular but not in frozen states.

Record elements, return whether this was allowed. By default, recording is allowed in regular but not in frozen states.

Roll back global state to what was recorded in this VarState

Returns a string representation of the object.

The default representation is platform dependent.

If root1 and root2 belong to the same binder but have different originalBinders it means that one of the roots was mapped to the binder of the other by a substBinder when comparing two method types. In that case we can unify the two roots1, provided none of the two roots have already been unified themselves. So unification must be 1-1.