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DateIntervalDynamicReturnTypeExtension.php
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DateIntervalDynamicReturnTypeExtension.php
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<?php declare( strict_types = 1 );
namespace PHPStan\Type\Php;
use DateInterval;
use PhpParser\Node\Expr\StaticCall;
use PHPStan\Analyser\Scope;
use PHPStan\Reflection\MethodReflection;
use PHPStan\Type\Constant\ConstantBooleanType;
use PHPStan\Type\Constant\ConstantStringType;
use PHPStan\Type\DynamicStaticMethodReturnTypeExtension;
use PHPStan\Type\ObjectType;
use PHPStan\Type\Type;
use PHPStan\Type\TypeUtils;
class DateIntervalDynamicReturnTypeExtension
implements DynamicStaticMethodReturnTypeExtension
{
public function getClass(): string
{
return DateInterval::class;
}
public function isStaticMethodSupported( MethodReflection $methodReflection ): bool
{
return $methodReflection->getName() === 'createFromDateString';
}
public function getTypeFromStaticMethodCall( MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope ): ?Type
{
$strings = $scope->getType( $methodCall->getArgs()[ 0 ]->value )->getConstantStrings();
if ( $strings === [] ) {
return null;
}
if ( count( $strings ) === 1 ) {
if ( DateInterval::createFromDateString( $strings[ 0 ]->getValue() ) === false ) {
return new ConstantBooleanType( false );
}
return new ObjectType( DateInterval::class );
}
foreach ( $strings as $string ) {
if ( DateInterval::createFromDateString( $string->getValue() ) === false ) {
return null;
}
}
return new ObjectType( DateInterval::class );
}
}