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Improve inference for InputFilterPluginManager::get() #97

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merged 6 commits into from
Jan 10, 2024
Merged

Improve inference for InputFilterPluginManager::get() #97

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15e9e3d
Add an assertion to remove the possibility that the value is an `Inpu…
gsteel Jan 9, 2024
774bb40
Suppress `UnusedClass` in SA Tests in config instead of inline
gsteel Jan 9, 2024
be8b829
Override `get()` so that we can properly type the return value.
gsteel Jan 9, 2024
be509ec
Baseline issues stemming for more precise types in `get()`
gsteel Jan 9, 2024
68627d4
Simplify templates for `get()`
gsteel Jan 9, 2024
765bebb
Refine types for `InputFilterPluginManager::get` and add additional S…
gsteel Jan 10, 2024
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18 changes: 7 additions & 11 deletions psalm-baseline.xml
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Expand Up @@ -104,12 +104,6 @@
</PossiblyUnusedReturnValue>
</file>
<file src="src/Factory.php">
<InvalidReturnStatement>
<code>$inputFilter</code>
</InvalidReturnStatement>
<InvalidReturnType>
<code>InputFilterInterface</code>
</InvalidReturnType>
<MixedArgument>
<code><![CDATA[$inputFilterSpecification['count']]]></code>
<code><![CDATA[$inputFilterSpecification['input_filter']]]></code>
Expand Down Expand Up @@ -142,10 +136,6 @@
<code>$value</code>
<code>$value</code>
</PossiblyInvalidArgument>
<PossiblyUndefinedMethod>
<code>add</code>
<code>add</code>
</PossiblyUndefinedMethod>
<UnusedPsalmSuppress>
<code>DeprecatedMethod</code>
<code>DocblockTypeContradiction</code>
Expand Down Expand Up @@ -289,8 +279,14 @@
<code>InputFilterPluginManager</code>
</MethodSignatureMismatch>
<MethodSignatureMustProvideReturnType>
<code>Plu</code>
<code>get</code>
</MethodSignatureMustProvideReturnType>
Comment on lines -292 to 283
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Why psalm complains about plugin manager get? Does it want simple typehinted return and conditional be in psalm-return?

Also what is the MethodSignatureMismatch just above that was previously baselined? Is it due to psr container aliasing shenanigans?

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To answer it: some inherited weirdness going on.

ERROR: MethodSignatureMismatch - src/InputFilterPluginManager.php:30:7 - Method Laminas\ServiceManager\ServiceManager::has with return type '' is different to return type 'bool' of inherited method Psr\Container\ContainerInterface::has (see https://psalm.dev/042)
ERROR: MethodSignatureMismatch - src/InputFilterPluginManager.php:30:7 - Method Laminas\InputFilter\InputFilterPluginManager::get with return type '' is different to return type 'object' of inherited method Psr\Container\ContainerInterface::get (see https://psalm.dev/042)

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I think a lot of this will be solved with SMv4 when we can drop PSR container v1 and tighten up the templates and types in the plugin manager.

<MixedInferredReturnType>
<code><![CDATA[($name is class-string<InputInterface> ? T1 : ($name is class-string<InputFilterInterface> ? T2 : InputInterface|InputFilterInterface))]]></code>
</MixedInferredReturnType>
<MixedReturnStatement>
<code>parent::get($name, $options)</code>
</MixedReturnStatement>
<NonInvariantDocblockPropertyType>
<code>$factories</code>
</NonInvariantDocblockPropertyType>
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13 changes: 13 additions & 0 deletions psalm.xml.dist
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Expand Up @@ -22,6 +22,19 @@
<pluginClass class="Psalm\PhpUnitPlugin\Plugin"/>
</plugins>

<issueHandlers>
<UnusedClass>
<errorLevel type="suppress">
<directory name="test/StaticAnalysis" />
</errorLevel>
</UnusedClass>
<PossiblyUnusedMethod>
<errorLevel type="suppress">
<directory name="test/StaticAnalysis" />
</errorLevel>
</PossiblyUnusedMethod>
</issueHandlers>

<stubs>
<file name=".psr-container.php.stub" preloadClasses="true" />
</stubs>
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2 changes: 2 additions & 0 deletions src/Factory.php
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Expand Up @@ -12,6 +12,7 @@
use Laminas\Validator\ValidatorInterface;
use Traversable;

use function assert;
use function class_exists;
use function get_debug_type;
use function gettype;
Expand Down Expand Up @@ -317,6 +318,7 @@ public function createInputFilter($inputFilterSpecification)
}

$inputFilter = $this->getInputFilterManager()->get($type);
assert($inputFilter instanceof InputFilterInterface); // As opposed to InputInterface
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How do we know it is not an InputInterface here? InputFilterManager allows both

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Because the createInputFilter method expects a spec (Array of type InputFilterSpecification). Here $type defaults to InputFilter::class and InputFilterSpecification['type'] is class-string<InputFilterInterface>

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@Xerkus Xerkus Jan 9, 2024 •
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I think this ought to be full check for input filter with meaningful exception, not just an assert since the method is user facing and there is no soft guard somewhere else.

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An exception here would be a BC break though wouldn't it? The assertion will blow up in tests, it verifies the intended type for static analysis, and otherwise is a no-op for users

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It wouldn't be. It would just be a fatal error if method not implemented or kinda work with anything as long as object has add() or __call()

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This is more of a usability concern really. Exception would allow to say it needs to be input filter and get_debug_type was returned for the requested type $type.


if ($inputFilter instanceof CollectionInputFilter) {
$inputFilter->setFactory($this);
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15 changes: 14 additions & 1 deletion src/InputFilterPluginManager.php
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Expand Up @@ -26,7 +26,6 @@
* @psalm-import-type ServiceManagerConfiguration from ServiceManager
* @template InstanceType of InputFilterInterface|InputInterface
* @extends AbstractPluginManager<InstanceType>
* @method InputFilterInterface|InputInterface get(string $name, ?array $options = null)
*/
class InputFilterPluginManager extends AbstractPluginManager
{
Expand Down Expand Up @@ -188,4 +187,18 @@ public function validatePlugin($plugin)
throw new Exception\RuntimeException($e->getMessage(), $e->getCode(), $e);
}
}

/**
* @inheritDoc
* phpcs:disable Generic.Files.LineLength.TooLong
* // Template constraint required or we get mixed added to output. Two templates because union does not work
* @template T1 of InputInterface
* @template T2 of InputFilterInterface
* @param class-string<T1>|class-string<T2>|string $name
* @return ($name is class-string<InputInterface> ? T1 : ($name is class-string<InputFilterInterface> ? T2 : InputInterface|InputFilterInterface))
*/
public function get($name, ?array $options = null)
{
return parent::get($name, $options);
}
}
1 change: 0 additions & 1 deletion test/StaticAnalysis/AddingInputsWithArraySpecs.php
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Expand Up @@ -10,7 +10,6 @@

/**
* @extends InputFilter<array<string, mixed>>
* @psalm-suppress UnusedClass
*/
final class AddingInputsWithArraySpecs extends InputFilter
{
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32 changes: 32 additions & 0 deletions test/StaticAnalysis/InputFilterPluginManagerType.php
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@@ -0,0 +1,32 @@
<?php

declare(strict_types=1);

namespace LaminasTest\InputFilter\StaticAnalysis;

use Laminas\InputFilter\InputFilterInterface;
use Laminas\InputFilter\InputFilterPluginManager;
use Laminas\InputFilter\InputInterface;

final class InputFilterPluginManagerType
{
public function __construct(private InputFilterPluginManager $manager)
{
}

public function getWillReturnAnInputOrInputFilterGivenAString(
string $anyString,
): InputInterface|InputFilterInterface {
return $this->manager->get($anyString);
}

public function getWithFQCNWillReturnTheObjectOfType(): InputFilterWithTemplatedValues
{
return $this->manager->get(InputFilterWithTemplatedValues::class);
}

public function getInvalidFQCNReturnsFallbackType(): InputInterface|InputFilterInterface
{
return $this->manager->get(self::class);
}
}
1 change: 0 additions & 1 deletion test/StaticAnalysis/InputFilterTemplateInfersFilterValueTypes.php
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Expand Up @@ -8,7 +8,6 @@
use function count;
use function reset;

/** @psalm-suppress UnusedClass */
final class InputFilterTemplateInfersFilterValueTypes
{
public function __construct(
Expand Down