SingleDenotation

The denotation made up from the alternatives of this denotation that are accessible from prefix pre, or NoDenotation if no accessible alternative exists.

Map f over all single denotations and aggregate the results with g.

The alternatives of this denotation that satisfy the predicate p.

Resolve overloaded denotation to pick the ones with the given signature when seen from prefix site.

The period (interval of phases) for which there exists a valid denotation in this flock.

Produce a denotation that is valid for the given context. Usually called when !(validFor contains ctx.period) (even though this is not a precondition). If the runId of the context is the same as runId of this denotation, the right flock member is located, or, if it does not exist yet, created by invoking a transformer (@See Transformers). If the runId's differ, but this denotation is a SymDenotation and its toplevel owner class or module is still a member of its enclosing package, then the whole flock is brought forward to be valid in the new runId. Otherwise the symbol is stale, which constitutes an internal error.

Keep only those denotations in this group which have a signature that's not already defined by denots.

Keep only those denotations in this group that have all of the flags in required, but none of the flags in excluded.

Keep only those denotations in this group which satisfy predicate p.

First/last denotation in the group

Does this denotation have an alternative that satisfies the predicate p?

The version of this SingleDenotation that was valid in the first phase of this run.

Install this denotation to be the result of the given denotation transformer. This is the implementation of the same-named method in SymDenotations. It's placed here because it needs access to private fields of SingleDenotation.

Invalidate all caches and fields that depend on base classes and their contents

True if the info of this denotation comes from a refinement.

A denotation with the info of this denotation transformed using f

Keep only those inherited members M of this predenotation for which the following is true

• M is not marked Private
• If M has a unique symbol, it does not appear in prevDenots.
• M's signature as seen from prefix pre does not appear in ownDenots Return the denotation as seen from pre. Called from SymDenotations.computeMember. There, ownDenots are the denotations found in the base class, which shadow any inherited denotations with the same signature. prevDenots are the denotations that are defined in the class or inherited from a base type which comes earlier in the linearization.

Group contains a denotation with the same signature as other

matches without a target name check.

For definitions coming from different languages, we pick a common language to compute their signatures. This allows us for example to override some Java definitions from Scala even if they have a different erasure (see i8615b, i9109b), Erasure takes care of adding any necessary bridge to make this work at runtime.

The name of the denotation

For SymDenotation, this is NoPrefix. For other denotations this is the prefix under which the denotation was constructed.

Note that asSeenFrom might return a SymDenotation and therefore in general one cannot rely on prefix being set, see Config.reuseSymDenotations for details.

Show declaration string; useful for showing declarations as seen from subclasses.

For SymDenotations, the language-specific signature of the info, depending on where the symbol is defined. For non-SymDenotations, the Scala 3 signature.

Invariants:

• Before erasure, the signature of a denotation is always equal to the signature of its corresponding initial denotation.
• Two distinct overloads will have SymDenotations with distinct signatures (the SELECTin tag in Tasty relies on this to refer to an overload unambiguously). Note that this only applies to SymDenotations, in general we cannot assume that distinct SingleDenotations will have distinct signatures (cf #9050).

Overload of signature which lets the caller pick the language used to compute the signature of the info. Useful to match denotations defined in different classes (see matchesLoosely).

Skip any denotations that have been removed by an installAfter or that are otherwise undefined.

The unique alternative of this denotation that satisfies the predicate p, or NoDenotation if no satisfying alternative exists.

Returns a string representation of the object.

The default representation is platform dependent.

Apply a transformation f to all denotations in this group that start at or after given phase. Denotations are replaced while keeping the same validity periods.

The set of alternative single-denotations making up this denotation

The denotation with info(s) as seen from prefix type

If this is a SingleDenotation, return it, otherwise throw a TypeError

Group contains a denotation that refers to given symbol

If this denotation is overloaded, filter with given predicate. If result is still overloaded throw a TypeError. Note: disambiguate is slightly different from suchThat in that single-denotations that do not satisfy the predicate are left alone (whereas suchThat would map them to NoDenotation).

Is this denotation different from NoDenotation or an ErrorDenotation?

A fallback text representation, if the pattern matching in Printers does not have a case for this showable element

Find member of this denotation with given name, all required flags and no excluded flag, and produce a denotation that contains the type of the member as seen from given prefix pre.

Denotation points to unique symbol; false for overloaded denotations and JointRef denotations.

The type info. The info is an instance of TypeType iff this is a type denotation Uncompleted denotations set myInfo to a LazyType.

The type info, or, if this is a SymDenotation where the symbol is not yet completed, the completer

Is this denotation overloaded?

Is this a reference to a term symbol?

The alternative of this denotation that has a type matching targetType when seen as a member of type site and that has a target name matching targetName, or NoDenotation if none exists.

Form a denotation by conjoining with denotation that.

NoDenotations are dropped. MultiDenotations are handled by merging parts with same signatures. SingleDenotations with equal signatures are joined by following this sequence of steps:

1. If exactly one the denotations has an inaccessible symbol, pick the other one.
2. Otherwise, if one of the infos overrides the other one, and the associated symbol does not score strictly lower than the other one, pick the associated denotation.
3. Otherwise, if the two infos can be combined with infoMeet, pick that as result info, and pick the symbol that scores higher as result symbol, or pick sym1 as a tie breaker. The picked info and symbol are combined in a JointDenotation.
4. Otherwise, if one of the two symbols scores strongly higher than the other one, pick the associated denotation.
5. Otherwise return a multi-denotation consisting of both denotations.

Symbol scoring is determined according to the following ranking where earlier criteria trump later ones. Cases marked with (*) give a strong score advantage, the others a weak one.

1. The symbol exists, and the other one does not. (*)
2. The symbol is not a bridge, but the other one is. (*)
3. The symbol is concrete, and the other one is deferred
4. The symbol appears before the other in the linearization of pre
5. The symbol's visibility is strictly greater than the other one's.
6. The symbol is a method, but the other one is not.

If this denotation does not exist, fallback to alternative

Return symbol in this denotation that satisfies the given predicate. if generateStubs is specified, return a stubsymbol if denotation is a missing ref. Throw a TypeError if predicate fails to disambiguate symbol or no alternative matches.

The string representation of this showable element.

The string representation with each line after the first one indented by the given given margin (in spaces).

The summarized string representation of this showable element. Recursion depth is limited to some smallish value. Default is Config.summarizeDepth.

Convert to full denotation by &-ing all elements

The text representation of this showable element. This normally dispatches to a pattern matching method in Printers.

The union of two groups.

The next SingleDenotation in this run, with wrap-around from last to first.

There may be several SingleDenotations with different validity representing the same underlying definition at different phases. These are called a "flock". Flock members are generated by