C++RXP

module Cplus
  extend self

  def debug(str)
    (@data ||= {}).clear
    (@boolean ||= {}).clear
    (@var ||= {}).clear
    @isnt = ->(i, t=0) {
      return false if !(i =~ /int|long|void|char|bool/) and t == 0
      return true
    }
    _parse = parse(str)
    elements
  end

  def parse(stri)
    stri = stri.split(/\n/)

    stri.collect! { |str|

      # type0 ex: int main()
      if str =~ /^(.+)\(\)/im
        raise("Error") unless @isnt[$1]
        @data[($&.to_s + $'.to_s).symbol] = ""
        @boolean[($&.to_s + $'.to_s).symbol] = true
        next
      end

         if @boolean[@boolean.last_key]
           next if str =~ /^{/
           if str =~ /^}/
             @boolean[@boolean.last_key] = false
             next
           else
             @data[@data.last_key] << str + "\n"
           end
         end
    }
  end

  def elements
    @data.keys.collect! { |i|
      if i =~ /(\w+)/i
        if @isnt[$1]
          @data[i].split(/\n/).collect! { |n|
            next puts $1 if n =~ /std::cout << \"(.*)\"\;/i
            next @var[$1.symbol] = $2 if n =~ /int (\w+)=(\d+);/i
            next @var[$1.symbol] = $2 if n =~ /(\w+) = (\d+);/i
            next puts @var[$1.symbol] if n =~ /std::cout << (\w+);/
            next @var[$1.symbol] = String(@var[$1.symbol].to_i.next) if n =~ /(\w+)\++;/

          }
        end
      end
      next
    }
  end
end

#~ ss = %q(std::count << "Hello World!\n";)
#~ s = ->(str) { return $1 if str =~ /std::count << \"(.*)\"\;/i }
#~ puts s[ss]


Cplus.debug(%q(

int main()
{
  // declaring variables:
  int a;
  int b;
  int result;

  // process:
  a = 5;
  b = 2;
  a++;

  // print out the result:
  std::cout << a;
  std::cout << b;
}

))