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29 lines
515 B
29 lines
515 B
require_relative "error"
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module Lox
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class Instance
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def initialize(klass)
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@klass = klass
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@fields = {}
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end
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def get(name)
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return @fields.fetch(name.lexeme) if @fields.has_key?(name.lexeme)
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method = @klass.find_method(name.lexeme)
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return method unless method.nil?
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raise RuntimeError.new(name, "Undefined property '#{name.lexeme}'.")
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end
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def set(name, value)
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@fields[name.lexeme] = value
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end
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def to_s = "#{@klass.name} instance"
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end
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end
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