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53 lines
878 B
Ruby
53 lines
878 B
Ruby
# The goal of the Facade Pattern is to provide a unified interface to a set of
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# interfaces in a subsystem. This means you'd just have some object that can
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# send back other objects.
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# Complex Parts
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class CPU
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def freeze
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# Implementation
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end
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def jump(position)
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# Implementation
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end
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def execute
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# Implementation
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end
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end
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class Memory
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def load(position, data)
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# Implementation
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end
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end
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class HardDrive
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def read(lba, size)
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# Implementation
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end
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end
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# Facade
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class ComputerFacade
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attr_reader :processor, :ram, :hd
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def initialize
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@processor = CPU.new
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@ram = Memory.new
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@hd = HardDrive.new
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end
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def start
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processor.freeze
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processor.jump(BOOT_ADDRESS)
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processor.execute
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ram.load(BOOT_ADDRESS, hd.read(BOOT_SECTOR, SECTOR_SIZE))
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end
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end
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# Usage
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computer_facade = ComputerFacade.new
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computer_facade.start
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