def make_rule_pattern_from_ccg_node(ccg_tree, tokens):
attributes = get_attributes_from_ccg_node_recursively(ccg_tree, tokens)
category = ccg_tree.get('category')
assert category, 'There should be a non-empty category attribute in {0}'\
.format(etree.tostring(ccg_tree, pretty_print=True))
semantics = None
rule_pattern = SemanticRule(category, semantics, attributes)
return rule_pattern
def load_semantic_rules(fn):
semantic_rules = []
loaded = None
with codecs.open(fn, 'r', 'utf-8') as infile:
loaded = yaml.load(infile, Loader=yaml.SafeLoader)
if not loaded: raise ValueError("couldn't load file: " + fn)
for attributes in loaded:
# Compulsory fields.
category = attributes['category']
semantics = lexpr(attributes['semantics'])
del attributes['category'], attributes['semantics']
for attr_name, attr_val in attributes.items():
if attr_name.endswith('base') or attr_name.endswith('surf'):
attributes[attr_name] = normalize_token(attr_val)
new_semantic_rule = \
SemanticRule(category, semantics, attributes)
semantic_rules.append(new_semantic_rule)
return semantic_rules