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18 lines
300 B
18 lines
300 B
2 years ago
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module Lox
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class Environment
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def initialize
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@values = {}
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end
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def define(name, value)
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@values[name] = value
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end
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def get(token)
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name = token.lexeme
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@values.fetch(name) { raise RuntimeError.new(token, "Undefined variable '#{name}'.") }
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end
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end
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end
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