Module: Plurimath::Formatter::Numbers::MathmlRenderer

Defined in:
lib/plurimath/formatter/numbers/mathml_renderer.rb

Overview

Renders a Formatter result (FormattedNotation, FormattedNumber, or String) into a MathML element tree. Number delegates to this so the model does not carry format-specific XML construction.

Class Method Summary collapse

Class Method Details

.plain_element(result) ⇒ Object 



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# File 'lib/plurimath/formatter/numbers/mathml_renderer.rb', line 50

def plain_element(result)
  Utility.ox_element("mn") << result.to_s
end

.render(result) ⇒ Object 



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# File 'lib/plurimath/formatter/numbers/mathml_renderer.rb', line 12

def render(result)
  case result
  when FormattedNotation then render_notation(result)
  when FormattedNumber
    result.base_notation.semantic? ? render_semantic_base(result) : plain_element(result)
  else
    plain_element(result)
  end
end

.render_notation(notation) ⇒ Object 



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# File 'lib/plurimath/formatter/numbers/mathml_renderer.rb', line 22

def render_notation(notation)
  return plain_element(notation) if notation.notation_style == :e

  coeff = plain_element(notation.coefficient)
  times = Utility.ox_element("mo") << notation.times_symbol.to_s
  base_el = Utility.ox_element("mn") << "10"
  exp_el = Utility.ox_element("mn") << notation.formatted_exponent
  sup = Utility.ox_element("msup")
  Utility.update_nodes(sup, [base_el, exp_el])
  row = Utility.ox_element("mrow")
  Utility.update_nodes(row, [coeff, times, sup])
  row
end

.render_semantic_base(formatted) ⇒ Object 



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# File 'lib/plurimath/formatter/numbers/mathml_renderer.rb', line 36

def render_semantic_base(formatted)
  digits = Utility.ox_element("mn") << formatted.digits_string
  base_el = Utility.ox_element("mn") << formatted.base_notation.base.to_s
  sub = Utility.ox_element("msub")
  Utility.update_nodes(sub, [digits, base_el])

  return sub unless formatted.sign_text

  sign_el = Utility.ox_element("mo") << formatted.sign_text
  row = Utility.ox_element("mrow")
  Utility.update_nodes(row, [sign_el, sub])
  row
end