Class: Seimi::Formula::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/seimi/formula/parser.rb

Constant Summary collapse

UPPER = 
/[A-Z]/.freeze
LOWER = 
/[a-z]/.freeze
DIGIT = 
/[0-9]/.freeze
SUPERSCRIPT_DIGITS = 
{
  "⁰" => "0", "¹" => "1", "²" => "2", "³" => "3", "⁴" => "4",
  "⁵" => "5", "⁶" => "6", "⁷" => "7", "⁸" => "8", "⁹" => "9"
}.freeze
SUPERSCRIPT_SIGNS = 
{ "⁺" => "+", "⁻" => "-" }.freeze

Instance Method Summary collapse

Constructor Details

#initialize(source) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/seimi/formula/parser.rb', line 15

def initialize(source)
  @source = String(source).strip
end

Instance Method Details

#parse ⇒ Object 



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# File 'lib/seimi/formula/parser.rb', line 19

def parse
  body, charge = split_charge(@source)
  parsed = split_hydrate_segments(body).each_with_index.map do |segment, index|
    parse_segment(segment, hydrate: index.positive?)
  end

  Formula.new(
    @source,
    compact_composition(parsed, :composition),
    compact_composition(parsed, :balance_composition),
    compact_components(parsed.flat_map { |item| item[:components] }),
    charge
  )
end