PregMatchParameterOutTypeExtension.php

<?php

declare (strict_types=1);
namespace Composer\Pcre\PHPStan;

use Composer\Pcre\Preg;
use PhpParser\Node\Expr\StaticCall;
use PHPStan\Analyser\Scope;
use PHPStan\Reflection\MethodReflection;
use PHPStan\Reflection\ParameterReflection;
use PHPStan\TrinaryLogic;
use PHPStan\Type\Php\RegexArrayShapeMatcher;
use PHPStan\Type\StaticMethodParameterOutTypeExtension;
use PHPStan\Type\Type;
final class PregMatchParameterOutTypeExtension implements StaticMethodParameterOutTypeExtension {
    
    /**
     * @var RegexArrayShapeMatcher
     */
    private $regexShapeMatcher;
    public function __construct(RegexArrayShapeMatcher $regexShapeMatcher) {
        $this->regexShapeMatcher = $regexShapeMatcher;
    }
    public function isStaticMethodSupported(MethodReflection $methodReflection, ParameterReflection $parameter) : bool {
        return $methodReflection->getDeclaringClass()
            ->getName() === Preg::class && in_array($methodReflection->getName(), [
            'match',
            'isMatch',
            'matchStrictGroups',
            'isMatchStrictGroups',
            'matchAll',
            'isMatchAll',
            'matchAllStrictGroups',
            'isMatchAllStrictGroups',
        ], true) && $parameter->getName() === 'matches';
    }
    public function getParameterOutTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, ParameterReflection $parameter, Scope $scope) : ?Type {
        $args = $methodCall->getArgs();
        $patternArg = $args[0] ?? null;
        $matchesArg = $args[2] ?? null;
        $flagsArg = $args[3] ?? null;
        if ($patternArg === null || $matchesArg === null) {
            return null;
        }
        $flagsType = PregMatchFlags::getType($flagsArg, $scope);
        if ($flagsType === null) {
            return null;
        }
        if (stripos($methodReflection->getName(), 'matchAll') !== false) {
            return $this->regexShapeMatcher
                ->matchAllExpr($patternArg->value, $flagsType, TrinaryLogic::createMaybe(), $scope);
        }
        return $this->regexShapeMatcher
            ->matchExpr($patternArg->value, $flagsType, TrinaryLogic::createMaybe(), $scope);
    }

}