122 lines
2.8 KiB
Python
122 lines
2.8 KiB
Python
"""
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实例
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汤宝宝想要建造一栋属于自己的房子，于是找来了著名的建筑设计
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公司——生成者模式公司（Builder Pattern Inc.）帮忙设计和建造房子。
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"""
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from abc import ABC, abstractmethod
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# 产品： 房子
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class House(ABC):
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foundation: str
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structure: str
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roof: str
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# 抽象建造者： 房屋建造者
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class HouseBuilder(ABC):
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@abstractmethod
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def buildFoundation(self) -> None:
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pass
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@abstractmethod
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def buildStructure(self) -> None:
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pass
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@abstractmethod
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def buildRoof(self) -> None:
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pass
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@abstractmethod
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def getHouse(self) -> House:
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pass
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# 具体建造者： 木屋建造者
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class WoodenHouseBuilder(HouseBuilder):
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def __init__(self):
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self.house = House()
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def buildFoundation(self) -> None:
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self.house.foundation = "木桩地基"
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print(" 建造木桩地基")
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def buildStructure(self) -> None:
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self.house.structure = "木结构"
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print(" 建造木结构")
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def buildRoof(self) -> None:
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self.house.roof = "木屋顶"
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print(" 建造木屋顶")
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def getHouse(self) -> House:
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return self.house
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# 具体建造者： 砖房建造者
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class BrickHouseBuilder(HouseBuilder):
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def __init__(self):
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self.house = House()
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def buildFoundation(self) -> None:
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self.house.foundation = "混凝土地基"
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print(" 建造混凝土地基")
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def buildStructure(self) -> None:
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self.house.structure = "砖结构"
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print(" 建造砖结构")
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def buildRoof(self) -> None:
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self.house.roof = "瓦屋顶"
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print(" 建造瓦屋顶")
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def getHouse(self) -> House:
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return self.house
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# 指挥者
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class Director:
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builder: HouseBuilder
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house: House
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def reset(self) -> None:
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if hasattr(self, "house"):
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del self.house
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def setBuilder(self, builder: HouseBuilder) -> None:
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self.builder = builder
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def constructHouse(self):
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self.reset()
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self.builder.buildFoundation()
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self.builder.buildStructure()
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self.builder.buildRoof()
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self.house = self.builder.getHouse()
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def main():
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print("======== 生成者模式 ========")
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director = Director()
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print("建造木屋:")
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builder = WoodenHouseBuilder()
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director.setBuilder(builder)
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director.constructHouse()
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house = director.house
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print(f"木屋建造完成: {house.foundation}, {house.structure}, {house.roof}\n")
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print("建造砖房:")
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builder = BrickHouseBuilder()
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director.setBuilder(builder)
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director.constructHouse()
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house = director.house
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print(f"砖房建造完成: {house.foundation}, {house.structure}, {house.roof}\n")
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print("====== 生成者模式结束 ======")
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if __name__ == "__main__":
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main()
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