Module: AtCoderFriends::Parser::ConstraintsParser

Defined in:
lib/at_coder_friends/parser/constraints_parser.rb

Overview

parses constraints

Class Method Summary collapse

Class Method Details

.parse(desc) ⇒ Object 



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# File 'lib/at_coder_friends/parser/constraints_parser.rb', line 13

def parse(desc)
  desc
    .gsub(/[,\\(){}|]/, '')
    .gsub(/(≤|leq?)/i, '≦')
    .scan(/([\da-z_]+)\s*≦\s*(\d+)(?:\^(\d+))?/i)
    .map do |v, sz, k|
      sz = sz.to_i
      sz **= k.to_i if k
      Constraint.new(v, :max, sz)
    end
end

.process(pbm) ⇒ Object 



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# File 'lib/at_coder_friends/parser/constraints_parser.rb', line 9

def process(pbm)
  pbm.constraints = parse(pbm.desc)
end