annoying: we have to wrap Floats to be able to define hash

An `Arc` that is known to be uniquely owned When `Arc`s are constructed, they are known to be uniquely owned. In such a case it is safe to mutate the

A tagged union that can represent `Arc<A>` or `Arc<B>` while only consuming a single word. The type is also `NonNull`, and thus can be stored in an Op

A boxed value on the heap. Consists of a header followed by the value.

Equivalent to TryFrom, but will cast into a reference on heap.

Equivalent to TryFrom, but will cast into a mutable reference on heap.

Equivalent to TryInto, but will cast into a reference on heap.

Equivalent to TryInto, but will cast into a mutable reference on heap.

Pattern matching compiler.

Represents all state necessary for code execution.

Support functions for converting libc return values to io errors {

extracted from itertools

Represents the current input (text and cursor position). The methods do text manipulations or/and cursor movements.

Process-local data. Should only be touched by the owning process.

Shared metadata for all table types.

a specialized instruction.

match VM instructions

Process state after each execution chunk