vars.py 文件源码

def hunt_repeated_yaml_keys(data):
    """Parses yaml and returns a list of repeated variables and
       the line on which they occur
    """
    loader = yaml.Loader(data)

    def compose_node(parent, index):
        # the line number where the previous token has ended (plus empty lines)
        line = loader.line
        node = Composer.compose_node(loader, parent, index)
        node.__line__ = line + 1
        return node

    def construct_mapping(node, deep=False):
        mapping = dict()
        errors = dict()
        for key_node, value_node in node.value:
            key = key_node.value
            if key in mapping:
                if key in errors:
                    errors[key].append(key_node.__line__)
                else:
                    errors[key] = [mapping[key], key_node.__line__]

            mapping[key] = key_node.__line__

        return errors

    loader.compose_node = compose_node
    loader.construct_mapping = construct_mapping
    data = loader.get_single_data()
    return data