modelverse/kernel/rules/to_python.alc

include "primitives.alh"
include "modelling.alh"
include "object_operations.alh"

Boolean function main(model : Element):
	String result
	Element nodes
	String node
	Element edges
	String edge
	String new_node
	String source
	String destination
	String name
	Element to_explore
	Element explored

	result = "root, = yield [('RR', [])]\n"
	nodes = allInstances(model, "Rules/Root")
	while (set_len(nodes) > 0):
		node = set_pop(nodes)
		source = string_replace(node, "/", "_")
		result = result + source + " = root\n"

		// Keep following outgoing edges to find matching nodes
		to_explore = set_create()
		explored = set_create()
		set_add(to_explore, node)

		while (set_len(to_explore) > 0):
			// Still explore more!
			node = set_pop(to_explore)
			source = string_replace(node, "/", "_")

			edges = allOutgoingAssociationInstances(model, node, "Rules/Edge")
			while (set_len(edges) > 0):
				edge = set_pop(edges)
				new_node = readAssociationDestination(model, edge)
				if (value_eq(read_attribute(model, new_node, "match"), True)):
					// Is a match node, so fetch the value on the edge
					name = read_attribute(model, edge, "value")
					destination = string_replace(new_node, "/", "_")
					result = result + destination + ", = yield [('RD', [" + source + ", " + name + "])]\n"

					String value
					value = read_attribute(model, new_node, "value")
					if (element_neq(value, read_root())):
						// Match node has a value we should compare as well!
						// Read out the value from the Modelverse
						result = result + destination + "_V, = yield [('RV', [" + destination + "])]\n"

					set_add(to_explore, new_node)

	log("Got result:")
	log(result)
	return True!