ext.py 文件源码

def apply_definition(definitions, my_def, name):
    if name in definitions:
        definition = definitions[name]
        classifier = definition['classifier']
        if classifier == '@replace':
            return definition.children
        if classifier == '@after':
            return my_def + definition.children
        if classifier == '@before':
            return definition.children + my_def
        raise Exception('Unknown classifier: %s' % classifier)
    return my_def