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23 lines
445 B
Markdown
23 lines
445 B
Markdown
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# ImplementationRequirementViolation
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Emitted when a using class of a trait does not implement all interfaces specified using `@psalm-require-implements`.
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```php
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<?php
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interface A { }
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interface B { }
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/**
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* @psalm-require-implements A
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* @psalm-require-implements B
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*/
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trait T { }
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class C {
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// ImplementationRequirementViolation is emitted, as T requires
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// the using class C to implement A and B, which is not the case
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use T;
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}
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```
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