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psalm/docs/running_psalm/issues/ImplementationRequirementViolation.md
Niclas van Eyk 5f019cef53
Initial proposal for psalm-require-{extends, implements} (#4361)
* initial implementation of psalm-require-extends

* Added @psalm-require-implements

* Added shortcode for ExtensionRequirementViolation

* Docs & cofig entries for @pasalm-require-{implements,extends}

* Added requirement violations to issues.md
2021-01-29 11:41:10 +01:00

445 B

ImplementationRequirementViolation

Emitted when a using class of a trait does not implement all interfaces specified using @psalm-require-implements.

<?php

interface A { }
interface B { }

/**
 * @psalm-require-implements A
 * @psalm-require-implements B
 */
trait T { }

class C {
  // ImplementationRequirementViolation is emitted, as T requires
  // the using class C to implement A and B, which is not the case
  use T; 
}