Flop

Programs

Simple binary 3 bit counter

add a
add b
add c
clock c
to c b
to b a
when c 0
when b 0

Locked values

to 0

add a
clock a
to a a
when a 1

to 1

add a
clock a
to a a
when a 0

Interpreter

pflops = {}
flops = {}
transitions = {}
whens = {}
clocks = []
program = """
add a
add b
add c
add d
clock d
to d c
to c b
to b a
when d 0
when c 0
when b 0
when a 0
""".split("\n")
def floop(flopper):
    flops[flopper] = 1-flops[flopper]
    if flops[flopper] == whens[flopper] and flops[flopper] != pflops[flopper]:
        try:
            floop(transitions[flopper])
        except KeyError:
            pass
for commands in program:
    parts = commands.split(" ")
    if parts[0] == "add":
        flops[parts[1]] = 0
        pflops[parts[1]] = 0
    elif parts[0] == "to":
        transitions[parts[1]] = parts[2]
    elif parts[0] == "when":
        whens[parts[1]] = int(parts[2])
    elif parts[0] == "clock":
        clocks.append(parts[1])
i = 0
while i < 16: #dependent on program length
    for flop in flops:
        print(flop+": "+str(flops[flop]))
    print("")
    for flop in flops:
        if flop in clocks:
            flops[flop] = 1-flops[flop]
        if flops[flop] == whens[flop] and flops[flop] != pflops[flop]:
            try:
                floop(transitions[flop])
            except KeyError:
                pass
    pflops = flops.copy()
    i += 1

Better syntax would be this

c to b when c is 0