Module: Dhall::ExpressionVisitor

Defined in:
lib/dhall/normalize.rb

Constant Summary collapse

ExpressionHash = 
Util::HashOf.new(
  ValueSemantics::Anything,
  ValueSemantics::Either.new([Expression, nil])
)

Class Method Summary collapse

Class Method Details

.new(&block) ⇒ Object 



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# File 'lib/dhall/normalize.rb', line 14

def self.new(&block)
  Visitor.new(
    Expression                    => block,
    Util::ArrayOf.new(Expression) => lambda do |x|
      x.map(&block)
    end,
    ExpressionHash                => lambda do |x|
      Hash[x.map { |k, v| [k, v.nil? ? v : block[v]] }.sort]
    end
  )
end