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<?php declare(strict_types=1);
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namespace Composer\Pcre\PHPStan;
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use Composer\Pcre\Preg;
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use PhpParser\Node\Expr\StaticCall;
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use PHPStan\Analyser\Scope;
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use PHPStan\Analyser\SpecifiedTypes;
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use PHPStan\Analyser\TypeSpecifier;
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use PHPStan\Analyser\TypeSpecifierAwareExtension;
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use PHPStan\Analyser\TypeSpecifierContext;
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use PHPStan\Reflection\MethodReflection;
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use PHPStan\TrinaryLogic;
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use PHPStan\Type\Constant\ConstantArrayType;
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use PHPStan\Type\Php\RegexArrayShapeMatcher;
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use PHPStan\Type\StaticMethodTypeSpecifyingExtension;
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use PHPStan\Type\TypeCombinator;
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use PHPStan\Type\Type;
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final class PregMatchTypeSpecifyingExtension implements StaticMethodTypeSpecifyingExtension, TypeSpecifierAwareExtension
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{
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/**
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* @var TypeSpecifier
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*/
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private $typeSpecifier;
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/**
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* @var RegexArrayShapeMatcher
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*/
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private $regexShapeMatcher;
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public function __construct(RegexArrayShapeMatcher $regexShapeMatcher)
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{
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$this->regexShapeMatcher = $regexShapeMatcher;
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}
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public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
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{
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$this->typeSpecifier = $typeSpecifier;
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}
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public function getClass(): string
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{
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return Preg::class;
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}
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public function isStaticMethodSupported(MethodReflection $methodReflection, StaticCall $node, TypeSpecifierContext $context): bool
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{
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return in_array($methodReflection->getName(), [
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'match', 'isMatch', 'matchStrictGroups', 'isMatchStrictGroups',
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'matchAll', 'isMatchAll', 'matchAllStrictGroups', 'isMatchAllStrictGroups'
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], true)
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&& !$context->null();
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}
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public function specifyTypes(MethodReflection $methodReflection, StaticCall $node, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
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{
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$args = $node->getArgs();
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$patternArg = $args[0] ?? null;
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$matchesArg = $args[2] ?? null;
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$flagsArg = $args[3] ?? null;
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if (
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$patternArg === null || $matchesArg === null
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) {
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return new SpecifiedTypes();
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}
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$flagsType = PregMatchFlags::getType($flagsArg, $scope);
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if ($flagsType === null) {
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return new SpecifiedTypes();
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}
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if (stripos($methodReflection->getName(), 'matchAll') !== false) {
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$matchedType = $this->regexShapeMatcher->matchAllExpr($patternArg->value, $flagsType, TrinaryLogic::createFromBoolean($context->true()), $scope);
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} else {
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$matchedType = $this->regexShapeMatcher->matchExpr($patternArg->value, $flagsType, TrinaryLogic::createFromBoolean($context->true()), $scope);
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}
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if ($matchedType === null) {
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return new SpecifiedTypes();
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}
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if (
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in_array($methodReflection->getName(), ['matchStrictGroups', 'isMatchStrictGroups', 'matchAllStrictGroups', 'isMatchAllStrictGroups'], true)
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) {
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$matchedType = PregMatchFlags::removeNullFromMatches($matchedType);
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}
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$overwrite = false;
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if ($context->false()) {
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$overwrite = true;
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$context = $context->negate();
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}
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// @phpstan-ignore function.alreadyNarrowedType
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if (method_exists('PHPStan\Analyser\SpecifiedTypes', 'setRootExpr')) {
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$typeSpecifier = $this->typeSpecifier->create(
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$matchesArg->value,
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$matchedType,
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$context,
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$scope
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)->setRootExpr($node);
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return $overwrite ? $typeSpecifier->setAlwaysOverwriteTypes() : $typeSpecifier;
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}
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// @phpstan-ignore arguments.count
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return $this->typeSpecifier->create(
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$matchesArg->value,
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$matchedType,
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$context,
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// @phpstan-ignore argument.type
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$overwrite,
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$scope,
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$node
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);
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}
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}
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