documentation/_discount_interface_8php_source.html

 <?php
 namespace Magento\SalesRule\Model\Rule\Action\Discount;

 interface DiscountInterface
 {
     public function calculate($rule, $item, $qty);

     public function fixQuantity($qty, $rule);
 }
Magento\SalesRule\Model\Rule\Action\Discount
Definition: CartFixedTest.php:8

$rule
$rule
Definition: rule_by_attribute.php:10

$item
$item
Definition: partial_invoice.php:27

Magento\SalesRule\Model\Rule\Action\Discount\DiscountInterface\calculate
calculate($rule, $item, $qty)

Magento\SalesRule\Model\Rule\Action\Discount\DiscountInterface
Definition: DiscountInterface.php:12

Magento\SalesRule\Model\Rule\Action\Discount\DiscountInterface\fixQuantity
fixQuantity($qty, $rule)