def compile(self):
"""
This method will compile and prepare everything to start evaluation
the configuration specification.
This method will:
- load all namespaces
- compile the __config__ namespace
- start resolving it and importing unknown namespaces
"""
self.load()
statements = []
for unit in self._units:
if unit.unit is not None:
statements.extend(unit.unit.compile())
# add the entity type (hack?)
entity = DefineEntity("Entity", "The entity all other entities inherit from.")
entity.namespace = Namespace("std", self.__root_ns)
requires_rel = DefineRelation([Reference("Entity", ["std"]), "requires", [0, None], False],
[Reference("Entity", ["std"]), "provides", [0, None], False])
requires_rel.namespace = Namespace("std", self.__root_ns)
statements.append(entity)
statements.append(requires_rel)
return statements
def create_relation(self, node):
"""
Create a relation definition
"""
link = str(node.children[0].text)
def return_side(nodes):
if len(nodes) == 3:
return [self._handle_node(nodes[0]), str(nodes[1].text),
self._handle_node(nodes[2]), False]
elif len(nodes) == 4:
return [self._handle_node(nodes[0]), str(nodes[1].text),
self._handle_node(nodes[3]), True]
left = return_side(node.children[1].children)
right = return_side(node.children[2].children)
rel = DefineRelation(left, right)
if link == '--':
pass
elif link == '<-':
# right requires left
rel.requires = "<"
elif link == '->':
# left requires right
rel.requires = ">"
return rel
