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Push — master ( 2d5692...88c050 )
by Jérémiah
08:12 queued 11s
created

FieldResolver::__invoke()   A

Complexity

Conditions 2
Paths 2

Size

Total Lines 6
Code Lines 3

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 4
CRAP Score 2

Importance

Changes 0
Metric Value
eloc 3
dl 0
loc 6
ccs 4
cts 4
cp 1
rs 10
c 0
b 0
f 0
cc 2
nc 2
nop 4
crap 2
1
<?php
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declare(strict_types=1);
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namespace Overblog\GraphQLBundle\Resolver;
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use Closure;
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use GraphQL\Type\Definition\ResolveInfo;
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use function is_array;
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use function is_callable;
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use function is_object;
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use function str_replace;
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use function ucwords;
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class FieldResolver
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{
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    /**
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     * @param mixed $parentValue
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     * @param mixed $args
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     * @param mixed $context
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     *
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     * @return mixed|null
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     */
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    public function __invoke($parentValue, $args, $context, ResolveInfo $info)
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    {
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        $fieldName = $info->fieldName;
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        $value = self::valueFromObjectOrArray($parentValue, $fieldName);
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        return $value instanceof Closure ? $value($parentValue, $args, $context, $info) : $value;
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    }
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    /**
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     * @param object|array $objectOrArray
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     *
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     * @return mixed|null
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     */
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    public static function valueFromObjectOrArray($objectOrArray, string $fieldName)
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    {
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        $value = null;
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        if (is_array($objectOrArray) && isset($objectOrArray[$fieldName])) {
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            $value = $objectOrArray[$fieldName];
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        } elseif (is_object($objectOrArray)) {
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            if (null !== $getter = self::guessObjectMethod($objectOrArray, $fieldName, 'get')) {
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                $value = $objectOrArray->$getter();
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            } elseif (null !== $getter = self::guessObjectMethod($objectOrArray, $fieldName, 'is')) {
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                $value = $objectOrArray->$getter();
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            } elseif (null !== $getter = self::guessObjectMethod($objectOrArray, $fieldName, '')) {
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                $value = $objectOrArray->$getter();
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            } elseif (isset($objectOrArray->$fieldName)) {
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                $value = $objectOrArray->$fieldName;
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            }
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        }
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        return $value;
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    }
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    private static function guessObjectMethod(object $object, string $fieldName, string $prefix): ?string
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    {
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        if (is_callable([$object, $method = $prefix.str_replace(' ', '', ucwords(str_replace('_', ' ', $fieldName)))])) {
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            return $method;
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        }
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        return null;
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    }
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}
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