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# File 'lib/bundler/ruby_dsl.rb', line 5
def ruby(*ruby_version)
options = ruby_version.pop if ruby_version.last.is_a?(Hash)
ruby_version.flatten!
if options
patchlevel = options[:patchlevel]
engine = options[:engine]
engine_version = options[:engine_version]
raise GemfileError, "Please define :engine_version" if engine && engine_version.nil?
raise GemfileError, "Please define :engine" if engine_version && engine.nil?
if options[:file]
raise GemfileError, "Do not pass version argument when using :file option" unless ruby_version.empty?
ruby_version << normalize_ruby_file(options[:file])
end
if engine == "ruby" && engine_version && ruby_version != Array(engine_version)
raise GemfileEvalError, "ruby_version must match the :engine_version for MRI"
end
end
@ruby_version = RubyVersion.new(ruby_version, patchlevel, engine, engine_version)
end
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