Method call_runnable

src/main/java/fieldbox/boxes/Callbacks.java:187–287

(Box box, Dict.Prop<IdempotencyMap<Runnable>> main, Object argMap, boolean evalIfNull, Function<Box, Collection<Box>> direction)

	public static Object call(Box box, Dict.Prop<IdempotencyMap<Supplier<Object>>> main, Object argMap) {
		return call(box, main, argMap, true, box.upwards());
	}

	public static void call_runnable(Box box, Dict.Prop<IdempotencyMap<Runnable>> main, Object argMap, boolean evalIfNull, Function<Box, Collection<Box>> direction) {
		Map<String, Object> undoMap = new LinkedHashMap<>();

		Object ret = null;

		boolean success = false;
		try {
			Map<?, ?> m = null;

			Class c = argMap == null ? null : argMap.getClass();

			// todo: these should be set (and restored) all the way up the chain no? Or perhaps we should set and restore them on _root instead...
			// let's proceed with root

			Box root = box.find(Boxes.root, box.upwards())
				.findFirst()
				.orElseThrow(() -> new IllegalArgumentException("can't execute a box not connected to the graph"));

			if (argMap instanceof Map) {
				m = (Map<?, ?>) Conversions.convert(argMap, Map.class);
				for (Map.Entry<?, ?> e : m.entrySet()) {
					Object was = root.properties.get(new Dict.Prop("" + e.getKey()));
					if (root.properties.has(new Dict.Prop("" + e.getKey())))
						undoMap.put("" + e.getKey(), was);
					root.asMap_set("" + e.getKey(), e.getValue());
				}
				{
					Object was = root.properties.get(new Dict.Prop("_origin"));
					if (root.properties.has(new Dict.Prop("_origin"))) undoMap.put("_origin", was);
					root.asMap_set("_origin", box);
				}
			} else {
				Dict.Prop arg = new Dict.Prop("arg");
				if (root.properties.has(arg)) undoMap.put("arg", root.properties.get(arg));
				root.asMap_set("arg", argMap);
			}

			success = true;

			try {

				if (evalIfNull && (!box.properties.has(main) || box.properties.get(main)
					.values()
					.size() == 0)) {
					if (Execution.context.get()
						.stream()
						.filter(x -> x == box)
						.count() > 1 && !box.properties.isTrue(new Dict.Prop("recur"), false))
						return;

//					String code = box.properties.get(Execution.code);
					String code = DisabledRangeHelper.getStringWithDisabledRanges(box, Execution.code, "/* -- start -- ", "-- end -- */");
					if (code != null) box.first(Execution.execution)
						.map(x -> x.support(box, Execution.code))
						.filter(x -> x != null)
						.ifPresent(x -> x.executeAll(code, box));