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havenwood/data_literal.rb

Created January 9, 2025 16:41
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A `~{meaning: 42}`-style Data literal implemented in Ruby
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data_literal.rb
module DataLiteral
refine Hash do
def to_data(name = nil)
if name
unless Object.const_defined?(name)
Object.const_set(name, Data.define(*keys))
end
Object.const_get(name).new(*values)
else
Data.define(*keys).new(*values)
end
end
alias ~@ to_data
end
end
using DataLiteral
~{aim: true, tip: :broadhead}
#=> #<data aim=true, tip=:broadhead>
{aim: true, tip: :broadhead}.to_data(:Arrow)
#=> #<data Arrow aim=true, tip=:broadhead>
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