helpers.py 文件源码

def cache_call_signatures(evaluator, bracket_leaf, code_lines, user_pos):
    """This function calculates the cache key."""
    index = user_pos[0] - 1

    before_cursor = code_lines[index][:user_pos[1]]
    other_lines = code_lines[bracket_leaf.start_pos[0]:index]
    whole = '\n'.join(other_lines + [before_cursor])
    before_bracket = re.match(r'.*\(', whole, re.DOTALL)

    module_path = bracket_leaf.get_parent_until().path
    if module_path is None:
        yield None  # Don't cache!
    else:
        yield (module_path, before_bracket, bracket_leaf.start_pos)
    yield evaluate_goto_definition(
        evaluator,
        bracket_leaf.get_previous_leaf()
    )