scala.runtime

All but the first two operations should be short-circuited and implemented specially by the backend.

A function with all parameters grouped in an array.

Helper methods used in thread-safe lazy vals.

A type constructor for a case in a match type.

A concrete subclass of scala.deriving.Mirror.Product, enabling reduction of bytecode size. as we do not need to synthesize an anonymous Mirror class at every callsite.

A type for skolems that are generated during capture conversion. Capture conversion narrows the type of a tree whose type has wildcard arguments. A typical situation is a tree t of type C[_ >: L <: U] and an expected type C[X] where X is an instantiatable type variable. To be able to instantiate X, we cast the tree to type X[$n.CAP] where $n is a fresh skolem type with underlying type TypeBox[L, U].

Marker trait for function types with erased parameters.

This trait will be refined with an apply method with erased parameters: ErasedFunction { def apply([erased] x_1: P_1, ..., [erased] x_N: P_N): R } This type will be erased to FunctionL, where L = N - count(erased).

A helper type to allow syntax like

def f(): T throws Ex1 | Ex2

Used in desugar.throws.