Passed
Pull Request — master (#8)
by Sergei
02:40
created

ParameterDefinition::resolve()   A

Complexity

Conditions 4
Paths 4

Size

Total Lines 28
Code Lines 18

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 17
CRAP Score 4

Importance

Changes 1
Bugs 0 Features 0
Metric Value
cc 4
eloc 18
c 1
b 0
f 0
nc 4
nop 1
dl 0
loc 28
ccs 17
cts 17
cp 1
crap 4
rs 9.6666
1
<?php
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declare(strict_types=1);
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namespace Yiisoft\Definitions;
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use ReflectionNamedType;
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use ReflectionParameter;
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use ReflectionUnionType;
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use Yiisoft\Definitions\Contract\DefinitionInterface;
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use Yiisoft\Definitions\Contract\DependencyResolverInterface;
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use Yiisoft\Definitions\Exception\NotInstantiableException;
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final class ParameterDefinition implements DefinitionInterface
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{
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    private ReflectionParameter $parameter;
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    public function __construct(ReflectionParameter $parameter)
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    {
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        $this->parameter = $parameter;
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    }
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    public function isVariadic(): bool
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    {
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        return $this->parameter->isVariadic();
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    }
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    public function isOptional(): bool
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    {
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        return $this->parameter->isOptional();
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    }
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    public function hasValue(): bool
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    {
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        return $this->parameter->isDefaultValueAvailable() || $this->parameter->allowsNull();
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    }
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    public function resolve(DependencyResolverInterface $dependencyResolver)
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    {
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        if ($this->parameter->isDefaultValueAvailable()) {
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            return $this->parameter->getDefaultValue();
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        }
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        if ($this->parameter->allowsNull()) {
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            return null;
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        }
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        if ($this->isOptional()) {
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            throw new NotInstantiableException(
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                sprintf(
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                    'Can not determine default value of parameter "%s" when instantiating "%s" ' .
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                    'because it is PHP internal. Please specify argument explicitly.',
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                    $this->parameter->getName(),
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                    $this->getCallable(),
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                )
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            );
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        }
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        throw new NotInstantiableException(
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            sprintf(
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                'Can not determine value of the "%s" parameter of type "%s" when instantiating "%s". ' .
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                'Please specify argument explicitly.',
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                $this->parameter->getName(),
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                $this->getType(),
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                $this->getCallable(),
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            )
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        );
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    }
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    private function getType(): string
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    {
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        $type = $this->parameter->getType();
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        if ($type === null) {
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            return 'undefined';
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        }
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        /** @psalm-suppress UndefinedClass, TypeDoesNotContainType */
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        if ($type instanceof ReflectionUnionType) {
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            /** @var ReflectionNamedType[] */
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            $namedTypes = $type->getTypes();
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            $names = array_map(
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                static fn (ReflectionNamedType $t) => $t->getName(),
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                $namedTypes
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            );
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            return implode('|', $names);
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        }
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        /** @var ReflectionNamedType $type */
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        return $type->getName();
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    }
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    private function getCallable(): string
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    {
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        $callable = [];
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        $class = $this->parameter->getDeclaringClass();
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        if ($class !== null) {
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            $callable[] = $class->getName();
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        }
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        $callable[] = $this->parameter->getDeclaringFunction()->getName() . '()';
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        return implode('::', $callable);
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    }
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}
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