@psalm-if-this-is@psalm-this-out: after a template update that leaves
Box<string>, a method that requires Box<int> must be rejected.
References:
- Psalm adding_assertions.md: @psalm-if-this-is / @psalm-this-out| Analyzer | Version | Result | Diagnostics |
|---|---|---|---|
| phan | 6.0.11Phan 6.0.11 php-ast version 1.1.3 PHP version used to run Phan: 8.5.11 | Partly enforced (1/2) | assertions_if_this_is_psalm.php:34: Template type U not used in return value of function/method set() [PhanTemplateTypeNotUsedInFunctionReturn]
|
| phpstan | 2.3.5PHPStan - PHP Static Analysis Tool 2.3.5 | Not enforced | No diagnostics reported.
|
| psalm | 6.20.9Psalm 6.20.9@f67170ac3c3b931f5088681e21d6c8babc601c08 next: 7.0.4 |
Enforced | assertions_if_this_is_psalm.php:53: Class type must be Conformance\Tests\AssertionsIfThisIsPsalm\Box<int> current type Conformance\Tests\AssertionsIfThisIsPsalm\Box<'x'> [IfThisIsMismatch]
|
| mago | 1.59.0mago 1.59.0 | Not enforced | No diagnostics reported.
|
| mir | 0.91.0mir 0.91.0 | Not enforced | No diagnostics reported.
|
| phpantom | 0.11.1phpantom_lsp 0.11.1 | Not enforced | No diagnostics reported.
|
| intelephense | 1.18.5intelephense 1.18.5 | Not enforced | No diagnostics reported.
|
| phpactor | 2026.10.07.0Phpactor 2026.10.07.0 | Not enforced | No diagnostics reported.
|
| phpy | 1.0.19490phpy 1.0.19490 | Not enforced | No diagnostics reported.
|
| qodana | 262.11879.104PhpStorm 262.11879.104 | Not enforced | No diagnostics reported.
|
| noverify | 0.5.5NoVerify, version 0.5.5: built on: 2025.04.22 14:36:46 OS: r-kuchinskas arm64 Commit: 4774b82f8adc53fbef38f95e97af4b953b4d1529 | Partly enforced (3/4) | assertions_if_this_is_psalm.php:24: param $value miss matched with phpdoc type <<T>> [funcParamTypeMissMatch] assertions_if_this_is_psalm.php:30: Class or interface named \Conformance\Tests\AssertionsIfThisIsPsalm\U does not exist [undefinedClass] assertions_if_this_is_psalm.php:34: param $value miss matched with phpdoc type <<U>> [funcParamTypeMissMatch]
|
| steins | 0.1.8steins 0.1.8 (2026-09-21 revision 76306a9) | Not enforced | No diagnostics reported.
|
| phpstan-strict | 2.3.5PHPStan - PHP Static Analysis Tool 2.3.5 | Not enforced | No diagnostics reported.
|
| psalm-next | 7.0.4Psalm 7.0.4@fa5b1f6e665cb743838ffd865b8fc96207f9409f | Enforced | assertions_if_this_is_psalm.php:53: Class type must be Conformance\Tests\AssertionsIfThisIsPsalm\Box<int> current type Conformance\Tests\AssertionsIfThisIsPsalm\Box<'x'> [IfThisIsMismatch]
|
<?php
declare(strict_types=1);
namespace Conformance\Tests\AssertionsIfThisIsPsalm;
/**
* Precondition on the receiver via `@psalm-if-this-is`.
*
* Companion to `@psalm-this-out`: after a template update that leaves
* `Box<string>`, a method that requires `Box<int>` must be rejected.
*
* References:
* - Psalm adding_assertions.md: `@psalm-if-this-is` / `@psalm-this-out`
*/
/**
* @template T
*/
final class Box
{
/** @param T $value */
public function __construct(
public mixed $value, // E<noverify>: NoVerify does not reconcile the promoted property with the template-bound constructor param
) {
}
/**
* @template U
* @param U $value // E<noverify>: NoVerify does not understand method-level template parameters here
* @psalm-this-out self<U>
* @phpstan-self-out self<U>
*/
public function set(mixed $value): void // E<phan>: Phan requires method template parameters to appear in the return type // E<noverify>: NoVerify treats the method template param as an unresolved class name
{
// Declarative this-out only; body assignment is out of scope here.
}
/**
* @psalm-if-this-is Box<int>
*/
public function needsInt(): void // T: @psalm-if-this-is
{
}
}
function example(): void
{
$box = new Box(1);
$box->needsInt(); // V
$box->set('x');
$box->needsInt(); // E?: after this-out to Box<string>, if-this-is Box<int> must fail
}