def test_is_start_of_sequence(self):
node_list = [PatternConstructor.build_node_desc('newline'), PatternConstructor.build_node_desc('space')]
seq = ast.SequencePattern(node_list)
root = ParseTreeConstructor.add_root_to_siblings('newline', 'space', 'space')
is_match, nodes = self.matcher.is_start_of_sequence(seq, root.value[0])
assert is_match
assert len(nodes) == 1
def test_find_parent_child_pattern_ancestor(self):
parent = PatternConstructor.build_node_desc('root')
child = PatternConstructor.build_node_desc('newline')
relations = ast.NodeRelations()
relations.register_relation(parent, ast.IsAncestorOf(child))
pattern = ast.PatternDescriptor(parent, [parent, child], relations)
result = self.matcher.find_pattern_in_tree(self.tree, pattern)
assert len(result) == 2
def test_find_double_pattern(self):
parent = PatternConstructor.build_node_desc('ruleset')
child1 = PatternConstructor.build_node_desc('declaration')
child2 = PatternConstructor.build_node_desc('declaration')
relations = ast.NodeRelations()
relations.register_relation(parent, ast.IsParentOf(child1))
relations.register_relation(parent, ast.IsParentOf(child2))
pattern = ast.PatternDescriptor(parent, [parent, child1, child2], relations)
result = self.matcher.find_pattern_in_tree(self.tree, pattern)
assert len(result) == 3
def test_is_variation_between_nodes(self):
variation = ast.WhitespaceVariation([
ast.SequencePattern([PatternConstructor.build_node_desc('newline')]),
ast.SequencePattern([PatternConstructor.build_node_desc('space'), PatternConstructor.build_node_desc('newline')])])
root = ParseTreeConstructor.add_root_to_siblings('comment', 'newline', 'comment')
present = self.matcher.is_variation_between_nodes(variation, root.value[0], root.value[2])
assert present
root = ParseTreeConstructor.add_root_to_siblings('comment', 'space', 'newline', 'comment')
present = self.matcher.is_variation_between_nodes(variation, root.value[0], root.value[3])
assert present
def test_is_sequence_exact_nodes_match_more(self):
node_list = [PatternConstructor.build_node_desc('newline'), PatternConstructor.build_node_desc('space')]
seq = ast.SequencePattern(node_list)
is_match = self.matcher._is_sequence_exact_nodes_match(seq, [self.node0, self.node1, self.node1])
assert not is_match
def test_is_sequence_exact_nodes_match_multi_two(self):
rep_node = PatternConstructor.build_seq_desc_type('newline', ast.Repeater(lower=2, upper=3))
node_list = [PatternConstructor.build_node_desc('space'), rep_node]
seq = ast.SequencePattern(node_list)
is_match = self.matcher._is_sequence_exact_nodes_match(seq, [self.node1, self.node0, self.node0])
assert is_match
