Contents

# frozen_string_literal: true

require_relative "binary_function"

module Plurimath
  module Math
    module Function
      class Intent < BinaryFunction
        def to_mathml_without_math_tag(intent)
          first_value = parameter_one.to_mathml_without_math_tag(intent)
          first_value.attributes["intent"] = encoded_intent(first_value)
          first_value
        end

        def to_unicodemath
          first_value = "(#{parameter_two.to_unicodemath}#{parameter_one.to_unicodemath})" if parameter_one || parameter_two
          "ⓘ#{first_value}"
        end

        private

        def encoded_intent(tag)
          if parameter_two.value == ":derivative" && encodable?
            field = parameter_one.value
            unicode = encode(field[0].parameter_one.value)
            unfenced_str = fence_value(tag.nodes[1].nodes[1..-2]) if tag.nodes[1]["intent"] == ":fenced"
            fenced_str = "(#{unfenced_str})" unless unfenced_str.empty?
            ":derivative(1,#{unicode}#{fenced_str},#{unfenced_str})"
          else
            Utility.html_entity_to_unicode(parameter_two.value)
          end
        end

        def encodable?
          return unless parameter_one.is_a?(Formula)

          field = parameter_one.value[0]
          field.is_a?(Power) &&
            prime_unicode?(field.parameter_two) &&
            field.parameter_one.is_a?(Symbols::Symbol)
        end

        def fence_value(nodes)
          str = ""
          nodes.each do |node|
            break unless node.name == "mi"

            str += encode(node.nodes.first)
          end
          str
        end

        def encode(str)
          Utility.html_entity_to_unicode(str)
        end
      end
    end
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
plurimath-0.8.14	lib/plurimath/math/function/intent.rb
plurimath-0.8.13	lib/plurimath/math/function/intent.rb
plurimath-0.8.12	lib/plurimath/math/function/intent.rb
plurimath-0.8.11	lib/plurimath/math/function/intent.rb