original_string: public function decimal($column, $length = 10, $scale = 2)
      {
          return $this->addColumn($column, self::TYPE_DECIMAL, array('length' => $length, 'scale' => $scale));
      }
code: public function decimal($column, $length = 10, $scale = 2)
      {
          return $this->addColumn($column, self::TYPE_DECIMAL, array('length' => $length, 'scale' => $scale));
      }
code_tokens: public function decimal ( $ column , $ length = 10 , $ scale = 2 ) { return $ this -> addColumn ( $ column , self :: TYPE_DECIMAL , array ( 'length' => $ length , 'scale' => $ scale ) ) ; }
docstring: Add a decimal column
  
  @param string $column
  @param int $length
  @param int $scale
  @return $this
docstring_tokens: Add a decimal column