94 lines
1.9 KiB
Plaintext
94 lines
1.9 KiB
Plaintext
|
%-----------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
sort
|
|||
|
|
CardinalDirection = struct north | east | south | west;
|
|||
|
|
|
|||
|
|
%-----------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
sort
|
|||
|
|
Colour = struct red | green | yellow;
|
|||
|
|
|
|||
|
|
map
|
|||
|
|
nextColour: Colour -> Colour;
|
|||
|
|
|
|||
|
|
eqn
|
|||
|
|
nextColour(red) = green;
|
|||
|
|
nextColour(green) = yellow;
|
|||
|
|
nextColour(yellow) = red;
|
|||
|
|
|
|||
|
|
%------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
sort
|
|||
|
|
Map = K -> V;
|
|||
|
|
|
|||
|
|
map
|
|||
|
|
_Map: V -> Map;
|
|||
|
|
|
|||
|
|
var
|
|||
|
|
k: K;
|
|||
|
|
v: V;
|
|||
|
|
|
|||
|
|
eqn
|
|||
|
|
_Map(v)(k) = v;
|
|||
|
|
|
|||
|
|
sort
|
|||
|
|
K = CardinalDirection;
|
|||
|
|
V = Colour;
|
|||
|
|
|
|||
|
|
map
|
|||
|
|
combinations: Map;
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
%------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
act
|
|||
|
|
show : CardinalDirection # Colour;
|
|||
|
|
seeColour : CardinalDirection # Colour;
|
|||
|
|
colourSeen : CardinalDirection # Colour;
|
|||
|
|
|
|||
|
|
%------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
proc
|
|||
|
|
TrafficLight(direction : CardinalDirection) = TL(direction, red);
|
|||
|
|
|
|||
|
|
TL(direction : CardinalDirection, colour : Colour) =
|
|||
|
|
show(direction, colour) . TL(direction, nextColour(colour))
|
|||
|
|
;
|
|||
|
|
|
|||
|
|
Monitor(status : Map) =
|
|||
|
|
sum direction : CardinalDirection.(
|
|||
|
|
sum c : Colour .
|
|||
|
|
(c == green) ->
|
|||
|
|
(direction == north || direction == south) ->
|
|||
|
|
((status(east) == red && status(west) == red) -> % sind die anderen Ampeln rot ?
|
|||
|
|
seeColour(direction, c) . Monitor(status= status[direction -> c])) % dann darf fortgefahren werden
|
|||
|
|
<>
|
|||
|
|
((status(north) == red && status(south) == red) ->
|
|||
|
|
seeColour(direction, c) . Monitor(status= status[direction -> c]))
|
|||
|
|
<> %soll nicht gr<67>n gezeigt werden kann einfach fortgefahren werden, es wurde ja bereits überprüft
|
|||
|
|
seeColour(direction, c) .
|
|||
|
|
Monitor(status= status[direction -> c])
|
|||
|
|
|
|||
|
|
);
|
|||
|
|
|
|||
|
|
|
|||
|
|
System =
|
|||
|
|
allow({
|
|||
|
|
colourSeen
|
|||
|
|
},
|
|||
|
|
comm({
|
|||
|
|
show | seeColour -> colourSeen
|
|||
|
|
|
|||
|
|
},
|
|||
|
|
|
|||
|
|
TrafficLight(north) || TrafficLight(east) || TrafficLight(south) || TrafficLight(west) || Monitor(_Map(red))
|
|||
|
|
));
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
init
|
|||
|
|
System
|
|||
|
|
;
|