version 1 .
embeddedType EntityRef.Cap .

; Dataspace patterns: a sublanguage of attenuation patterns.
Pattern = DDiscard / DBind / DLit / DCompound .

DDiscard = <_>.
DBind = <bind @pattern Pattern>.
DLit = <lit @value AnyAtom>.
DCompound = <rec @label any @fields [Pattern ...]>
          / <arr @items [Pattern ...]>
          / <dict @entries { any: Pattern ...:... }> .

AnyAtom =
    / @bool bool
    / @float float
    / @double double
    / @int int
    / @string string
    / @bytes bytes
    / @symbol symbol
.