ordo

Declares an enumeration.

Aliases: enum

Syntax: ordo <name> <block>

Category

type

Related

• discretio

Examples

examples/corpus/ordo/ordo.fab (canonical · keyword)

Declares an enumeration.

# ordo — enumerated constants (ordered variants)
#
# ordo <Nomen> { <membrum>, … }
# ordo <Nomen> { <membrum> = <valor>, … }
#
# GRAMMAR:
#   ordoDecl :← 'ordo' ident '{' ordoMember (',' ordoMember)* '}'
#
# EXPECTED OUTPUT:
#   rubrum
#   actum

ordo Color { rubrum, viridis, caeruleum }

ordo Condicio { pendens = 0, actum = 1, finitum = 2 }

incipit {
    # Using ordo values
    fixum _ color ← Color.rubrum
    fixum _ condicio ← Condicio.actum

    # Select by ordo
    elige color {
        casu Color.rubrum {
            nota "rubrum"
        }
        casu Color.viridis {
            nota "viridis"
        }
        casu Color.caeruleum {
            nota "caeruleum"
        }
    }

    # Select by ordo with numeric values
    elige condicio {
        casu Condicio.pendens {
            nota "pendens"
        }
        casu Condicio.actum {
            nota "actum"
        }
        casu Condicio.finitum {
            nota "finitum"
        }
    }
}

Expected output:

rubrum
actum