Class: Plurimath::Math::ModelHelper

Inherits:
Object
  • Object
show all
Defined in:
lib/plurimath/math/model_helper.rb

Overview

Display/serialization support helpers for the Math node classes, extracted from Plurimath::Utility (macro refactor). Deliberately a standalone class — NOT a Utility subclass — so it does not shadow bareword Utility references inside math files.

Constant Summary collapse

TEXT_CLASSES = 
%w[
  symbol
  number
  text
].freeze

Class Method Summary collapse

Class Method Details

.filter_math_zone_values(value, lang:, intent: false, options: nil) ⇒ Object 



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# File 'lib/plurimath/math/model_helper.rb', line 38

def filter_math_zone_values(value, lang:, intent: false, options: nil)
  return [] if value.nil? || value.empty?

  new_arr = []
  temp_array = []
  skip_index = nil
  value.each_with_index do |obj, index|
    object = obj.dup
    next if index == skip_index
    if TEXT_CLASSES.include?(object.class_name) || math_display_text_objects(object)
      next temp_array << (if object.is_a?(Math::Symbols::Symbol)
                            symbol_to_text(
                              object, lang: lang, intent: intent, options: options
                            )
                          else
                            object.value
                          end)
    end

    if temp_array.any?
      new_arr << Math::Function::Text.new(temp_array.join(" "),
                                          lang: lang)
    end
    temp_array = []
    new_arr << object
  end
  if temp_array.any?
    new_arr << Math::Function::Text.new(temp_array.join(" "),
                                        lang: lang)
  end
  new_arr
end

.notations_to_mask(notations) ⇒ Object 



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# File 'lib/plurimath/math/model_helper.rb', line 71

def notations_to_mask(notations)
  mask = notations.split.map do |notation|
    Utility::MASK_CLASSES.key(notation)
  end
  mask.compact.sum ^ 15
end

.validate_left_right(fields = []) ⇒ Object 



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# File 'lib/plurimath/math/model_helper.rb', line 17

def validate_left_right(fields = [])
  fields.each do |field|
    if field.is_a?(Math::Formula) && field.value.first.is_a?(Math::Function::Left)
      field.left_right_wrapper = true
    end
  end
end

.validate_math_zone(object, lang:, intent: false, options: nil) ⇒ Object 



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# File 'lib/plurimath/math/model_helper.rb', line 25

def validate_math_zone(object, lang:, intent: false, options: nil)
  return false unless object

  if object.is_a?(Math::Formula)
    filter_math_zone_values(object.value, lang: lang, intent: intent,
                                          options: options).find do |value|
      !(value.is_a?(Math::Function::Text) || value.is_a?(Math::Symbols::Symbol))
    end
  else
    !(TEXT_CLASSES.include?(object.class_name) || object.is_a?(Math::Symbols::Symbol))
  end
end