Module: Extract::Tree::Math

Included in:
ParenMath
Defined in:
lib/extract/tree/math.rb

Instance Method Summary collapse

Instance Method Details

#deps(start = self) ⇒ Object 



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# File 'lib/extract/tree/math.rb', line 39

def deps(start=self)
  res = []
  #res << get_math_exp.deps

  return [] unless start.elements

  start.elements.each do |e|
    #arg = e.elements[1]
    if e.respond_to?(:deps)
      res << e.deps 
    else
      res << deps(e)
    end
  end

  res.flatten.select { |x| x }

end

#eval ⇒ Object 



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# File 'lib/extract/tree/math.rb', line 91

def eval
  #puts "evaling #{text_value}"
  #raise tokens.map { |x| x.text_value }.inspect + "\n" + inspect
  MathCalc.parse_eval(tokens)
end

#excel_value ⇒ Object 



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# File 'lib/extract/tree/math.rb', line 17

def excel_value
  return eval
  raise 'foo'
  unless get_math_exp
    str = %w(math_exp naked_exp cell).map { |x| "#{x} #{respond_to?(x)}" }.join(", ")
    #raise str + "\n" + inspect
    #raise (methods - 7.methods).inspect + "\n" + inspect
  end


  res = 0
  #res = math_exp.excel_value if respond_to?(:math_exp)

  rest.elements.each do |e|
    #arg = e.elements[1]
    #res += arg.excel_value
    #res += 
  end

  res
end

#get_math_exp ⇒ Object 



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# File 'lib/extract/tree/math.rb', line 4

def get_math_exp
  if respond_to?(:math_exp)
    math_exp
  elsif respond_to?(:math_exp_full)
    math_exp_full
  elsif respond_to?(:num)
    num
  elsif respond_to?(:primary)
    primary
  else
    nil
  end
end

#tokens(start = self) ⇒ Object 



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# File 'lib/extract/tree/math.rb', line 58

def tokens(start=self)
  if start.respond_to?("paren?")
    res = start.math_exp.eval
    return [OpenStruct.new(:text_value => res.to_s)]
    #return [start.exp.eval]
  end
  #puts "parsing #{start.text_value} #{start.class}"
  res = []

  return res unless start.elements
  start.elements.each do |el|
    if el.respond_to?(:tt)
      t = el.tt
      if t == :num
        res << el
      elsif t == :operator
        res << el
      elsif t == :cell
        res << el
      elsif t == :formula
        res << el
      elsif t == :math
        res += el.tokens
      else
        raise "unknown"
      end
    else
      res += tokens(el)
    end
  end
  res
end