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ReflectionMapper.php
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ReflectionMapper.php
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<?php declare(strict_types=1);
/*
* This file is part of sebastian/type.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Type;
use function assert;
use ReflectionFunctionAbstract;
use ReflectionIntersectionType;
use ReflectionMethod;
use ReflectionNamedType;
use ReflectionType;
use ReflectionUnionType;
final class ReflectionMapper
{
/**
* @psalm-return list<Parameter>
*/
public function fromParameterTypes(ReflectionFunctionAbstract $functionOrMethod): array
{
$parameters = [];
foreach ($functionOrMethod->getParameters() as $parameter) {
$name = $parameter->getName();
assert($name !== '');
if (!$parameter->hasType()) {
$parameters[] = new Parameter($name, new UnknownType);
continue;
}
$type = $parameter->getType();
if ($type instanceof ReflectionNamedType) {
$parameters[] = new Parameter(
$name,
$this->mapNamedType($type, $functionOrMethod)
);
continue;
}
if ($type instanceof ReflectionUnionType) {
$parameters[] = new Parameter(
$name,
$this->mapUnionType($type, $functionOrMethod)
);
continue;
}
if ($type instanceof ReflectionIntersectionType) {
$parameters[] = new Parameter(
$name,
$this->mapIntersectionType($type, $functionOrMethod)
);
}
}
return $parameters;
}
public function fromReturnType(ReflectionFunctionAbstract $functionOrMethod): Type
{
if (!$this->hasReturnType($functionOrMethod)) {
return new UnknownType;
}
$returnType = $this->returnType($functionOrMethod);
assert($returnType instanceof ReflectionNamedType || $returnType instanceof ReflectionUnionType || $returnType instanceof ReflectionIntersectionType);
if ($returnType instanceof ReflectionNamedType) {
return $this->mapNamedType($returnType, $functionOrMethod);
}
if ($returnType instanceof ReflectionUnionType) {
return $this->mapUnionType($returnType, $functionOrMethod);
}
if ($returnType instanceof ReflectionIntersectionType) {
return $this->mapIntersectionType($returnType, $functionOrMethod);
}
}
private function mapNamedType(ReflectionNamedType $type, ReflectionFunctionAbstract $functionOrMethod): Type
{
if ($functionOrMethod instanceof ReflectionMethod && $type->getName() === 'self') {
return ObjectType::fromName(
$functionOrMethod->getDeclaringClass()->getName(),
$type->allowsNull()
);
}
if ($functionOrMethod instanceof ReflectionMethod && $type->getName() === 'static') {
return new StaticType(
TypeName::fromReflection($functionOrMethod->getDeclaringClass()),
$type->allowsNull()
);
}
if ($type->getName() === 'mixed') {
return new MixedType;
}
if ($functionOrMethod instanceof ReflectionMethod && $type->getName() === 'parent') {
return ObjectType::fromName(
$functionOrMethod->getDeclaringClass()->getParentClass()->getName(),
$type->allowsNull()
);
}
return Type::fromName(
$type->getName(),
$type->allowsNull()
);
}
private function mapUnionType(ReflectionUnionType $type, ReflectionFunctionAbstract $functionOrMethod): Type
{
$types = [];
foreach ($type->getTypes() as $_type) {
assert($_type instanceof ReflectionNamedType || $_type instanceof ReflectionIntersectionType);
if ($_type instanceof ReflectionNamedType) {
$types[] = $this->mapNamedType($_type, $functionOrMethod);
continue;
}
$types[] = $this->mapIntersectionType($_type, $functionOrMethod);
}
return new UnionType(...$types);
}
private function mapIntersectionType(ReflectionIntersectionType $type, ReflectionFunctionAbstract $functionOrMethod): Type
{
$types = [];
foreach ($type->getTypes() as $_type) {
assert($_type instanceof ReflectionNamedType);
$types[] = $this->mapNamedType($_type, $functionOrMethod);
}
return new IntersectionType(...$types);
}
private function hasReturnType(ReflectionFunctionAbstract $functionOrMethod): bool
{
if ($functionOrMethod->hasReturnType()) {
return true;
}
if (!method_exists($functionOrMethod, 'hasTentativeReturnType')) {
return false;
}
return $functionOrMethod->hasTentativeReturnType();
}
private function returnType(ReflectionFunctionAbstract $functionOrMethod): ?ReflectionType
{
if ($functionOrMethod->hasReturnType()) {
return $functionOrMethod->getReturnType();
}
if (!method_exists($functionOrMethod, 'getTentativeReturnType')) {
return null;
}
return $functionOrMethod->getTentativeReturnType();
}
}

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Sat, Oct 3, 23:47 (2 w, 3 d ago)
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ReflectionMapper.php (5 KB)

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