"""
基础占位符服务

提供日期、数字、年份等基础格式化服务.
"""

from .date_service import DatePlaceholderService
from .number_service import NumberPlaceholderService
from .year_service import YearPlaceholderService

__all__ = [
    "DatePlaceholderService",
    "NumberPlaceholderService",
    "YearPlaceholderService",
]