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NonEmptyStringFunctionsReturnTypeExtension.php
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NonEmptyStringFunctionsReturnTypeExtension.php
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<?php declare(strict_types = 1);
namespace PHPStan\Type\Php;
use PhpParser\Node\Expr\FuncCall;
use PHPStan\Analyser\Scope;
use PHPStan\Reflection\FunctionReflection;
use PHPStan\Reflection\ParametersAcceptorSelector;
use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
use PHPStan\Type\DynamicFunctionReturnTypeExtension;
use PHPStan\Type\IntersectionType;
use PHPStan\Type\StringType;
use PHPStan\Type\Type;
use function count;
use function in_array;
class NonEmptyStringFunctionsReturnTypeExtension implements DynamicFunctionReturnTypeExtension
{
public function isFunctionSupported(FunctionReflection $functionReflection): bool
{
return in_array($functionReflection->getName(), [
'addslashes',
'addcslashes',
'escapeshellarg',
'escapeshellcmd',
'htmlspecialchars',
'htmlentities',
'urlencode',
'urldecode',
'preg_quote',
'rawurlencode',
'rawurldecode',
], true);
}
public function getTypeFromFunctionCall(
FunctionReflection $functionReflection,
FuncCall $functionCall,
Scope $scope,
): Type
{
$args = $functionCall->getArgs();
if (count($args) === 0) {
return ParametersAcceptorSelector::selectSingle($functionReflection->getVariants())->getReturnType();
}
$argType = $scope->getType($args[0]->value);
if ($argType->isNonEmptyString()->yes()) {
return new IntersectionType([
new StringType(),
new AccessoryNonEmptyStringType(),
]);
}
return new StringType();
}
}