Class: Plurimath::Latex::Utility

Inherits:
Utility
  • Object
show all
Defined in:
lib/plurimath/latex/utility.rb

Overview

LaTeX-specific helpers extracted from Plurimath::Utility (code-quality refactor). Subclasses Utility so bareword Utility.<generic> calls inside LaTeX files keep resolving here and inherit the generic helpers.

Class Method Summary collapse

Class Method Details

.filter_table_data(table_data) ⇒ Object 



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# File 'lib/plurimath/latex/utility.rb', line 76

def filter_table_data(table_data)
  table_data.each_with_index do |object, ind|
    if object.is_a?(Math::Symbols::Minus)
      table_data[ind] = Math::Formula.new(
        [object, table_data.delete_at(ind.next)],
      )
    end
  end
  table_data
end

.left_right_objects(paren, function) ⇒ Object 



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# File 'lib/plurimath/latex/utility.rb', line 97

def left_right_objects(paren, function)
  paren = if paren.to_s.match?(/\\\{|\\\}/)
            paren.to_s.gsub("\\", "")
          else
            Latex::Constants::LEFT_RIGHT_PARENTHESIS[paren.to_sym]
          end
  get_class(function).new(paren)
end

.organize_options(table_data, column_align) ⇒ Object 



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# File 'lib/plurimath/latex/utility.rb', line 48

def organize_options(table_data, column_align)
  return column_align if column_align.length <= 1

  align = [column_align&.shift]
  table_data.insert(0, *column_align)
  align
end

.organize_table(array, column_align: nil, options: nil) ⇒ Object 



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# File 'lib/plurimath/latex/utility.rb', line 10

def organize_table(array, column_align: nil, options: nil)
  table = []
  table_data = []
  table_row = []
  organize_options(array, column_align) if options
  string_columns = column_align&.map { |column| column.is_a?(Math::Symbols::Paren) ? "|" : column.value }
  array.each do |data|
    if data&.separate_table
      table_row << Math::Function::Td.new(filter_table_data(table_data).compact)
      table_data = []
      if data.linebreak?
        organize_tds(table_row.flatten, string_columns.dup, options)
        table << Math::Function::Tr.new(table_row)
        table_row = []
      end
      next
    end
    table_data << data
  end
  # A trailing linebreak has already flushed its row and nothing follows
  # it, so there is no final cell to add. An empty input has flushed
  # nothing, and still yields its one placeholder cell.
  flushed_by_trailing_linebreak =
    table_data.empty? && table_row.empty? && !table.empty?
  unless flushed_by_trailing_linebreak
    table_row << Math::Function::Td.new(table_data.compact)
  end
  unless table_row.nil? || table_row.empty?
    organize_tds(table_row.flatten, string_columns.dup, options)
    table << Math::Function::Tr.new(table_row)
  end
  unless column_align.nil? || column_align.empty?
    table_separator(string_columns, table,
                    symbol: "|")
  end
  table
end

.organize_tds(tr_array, column_align, options) ⇒ Object 



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# File 'lib/plurimath/latex/utility.rb', line 65

def organize_tds(tr_array, column_align, options)
  return tr_array if column_align.nil? || column_align.empty?

  column_align.reject! { |string| string == "|" }
  column_align = column_align * tr_array.length if options
  tr_array.map.with_index do |td, ind|
    columnalign = Plurimath::Utility::ALIGNMENT_LETTERS[column_align[ind]&.to_sym]
    td.parameter_two = { columnalign: columnalign } if columnalign
  end
end

.table_options(table_data) ⇒ Object 



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# File 'lib/plurimath/latex/utility.rb', line 56

def table_options(table_data)
  rowline = ""
  table_data.each do |tr|
    rowline += hline_row?(tr) ? "solid " : "none "
  end
  options = { rowline: rowline.strip } if rowline.include?("solid")
  options || {}
end

.table_td(object) ⇒ Object 



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# File 'lib/plurimath/latex/utility.rb', line 87

def table_td(object)
  new_object = case object
               when Math::Function::Td
                 object
               else
                 Math::Function::Td.new([object].compact)
               end
  Array(new_object)
end