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Handle recursive bindings
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@umotif-gcaldock
umotif-gcaldock committed Dec 22, 2020
1 parent e108224 commit 5ae83c8
Showing 1 changed file with 37 additions and 21 deletions.
58 changes: 37 additions & 21 deletions src/JsonDecoder.php
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
namespace uMotif\JsonDecoder;

use PhpDocReader\PhpDocReader;
use PhpDocReader\PhpParser\UseStatementParser;
use ReflectionClass;
use uMotif\JsonDecoder\Bindings\ArrayBinding;
use uMotif\JsonDecoder\Bindings\DateTimeBinding;
Expand Down Expand Up @@ -59,9 +60,9 @@ public function scanAndRegister(string $class)
/**
* Decodes the given JSON string into an instance of the given class type.
*
* @param string $json the input JSON string
* @param string $classType the class type of the decoded object
* @param string|null $root the root element to decode, if not defined the whole decoded json object will be decoded
* @param string $json the input JSON string
* @param string $classType the class type of the decoded object
* @param string|null $root the root element to decode, if not defined the whole decoded json object will be decoded
*
* @return mixed the instance of the given class type
*
Expand All @@ -78,9 +79,9 @@ public function decode(string $json, string $classType, string $root = null)
/**
* Decodes the given JSON string into multiple instances of the given class type.
*
* @param string $json the input JSON string
* @param string $classType the class type of the decoded objects
* @param string|null $root the root element to decode, if not defined the whole decoded json object will be decoded
* @param string $json the input JSON string
* @param string $classType the class type of the decoded objects
* @param string|null $root the root element to decode, if not defined the whole decoded json object will be decoded
*
* @return array the list of instances decoded for the given class type
*
Expand Down Expand Up @@ -130,9 +131,9 @@ public function shouldAutoCase(): bool
/**
* transforms the given json data by using the found transformer.
*
* @param Transformer $transformer the transformer to use
* @param array $jsonArrayData the actual json data
* @param mixed $instance the class instance to bind to
* @param Transformer $transformer the transformer to use
* @param array $jsonArrayData the actual json data
* @param mixed $instance the class instance to bind to
*
* @return mixed|null
*
Expand All @@ -154,7 +155,7 @@ protected function transform(Transformer $transformer, ?array $jsonArrayData, $i
* transforms the given data with raw bindings.
*
* @param mixed $jsonArrayData the actual json data
* @param mixed $instance the class instance to bind to
* @param mixed $instance the class instance to bind to
*
* @return mixed|null
*
Expand All @@ -174,7 +175,7 @@ protected function transformRaw($jsonArrayData, $instance)
/**
* parses the given json string and eventually selects the defined root key.
*
* @param string $json the json string to parse
* @param string $json the json string to parse
* @param string|null $root the optional root key
*
* @return mixed the json data in array format
Expand Down Expand Up @@ -212,24 +213,26 @@ private function parseJson(string $json, string $root = null)
*/
private function scan(string $class)
{
$bindings = [];
$bindings = [];
$reflectionClass = new ReflectionClass($class);

foreach ($reflectionClass->getProperties() as $property) {
$reader = new PhpDocReader();

$propertyName = $property->getName();
$propertyType = $reader->getPropertyClass($property);
$objectClass = self::extractObjectArrayClassFromVar($property->getDocComment(), $reflectionClass);

if (!is_null($propertyType)) {
if ($propertyType === 'DateTime') {
$bindings[] = new DateTimeBinding($propertyName, $propertyName);
} else {
$bindings[] = new FieldBinding($propertyName, $propertyName, $propertyType);
}
} elseif ($property->getDocComment()) {
$class = self::extractVar($property->getDocComment(), $reflectionClass);
$bindings[] = new ArrayBinding($propertyName, $propertyName, $class);
$this->scanAndRegister($propertyType);
} elseif ($objectClass) {
$bindings[] = new ArrayBinding($propertyName, $propertyName, $objectClass);
$this->scanAndRegister($objectClass);
} else {
$bindings[] = new RawBinding($propertyName);
}
Expand All @@ -238,14 +241,19 @@ private function scan(string $class)
return $bindings;
}

private static function extractVar(string $docComment, ReflectionClass $class): string
/**
* @param string $docComment
* @param ReflectionClass $class
* @return false|mixed|string
*/
private static function extractObjectArrayClassFromVar(string $docComment, ReflectionClass $class)
{
$start = '@var ';
$end = '[]';
$end = '[]';

$ini = strpos($docComment, $start);
if ($ini == 0) {
return '';
return false;
}
$ini += strlen($start);
$len = strpos($docComment, $end, $ini) - $ini;
Expand All @@ -255,21 +263,29 @@ private static function extractVar(string $docComment, ReflectionClass $class):
return $class->getNamespaceName() . '\\' . $var;
}

$useStatementParser = new UseStatementParser();
$uses = $useStatementParser->parseUseStatements($class);
$loweredAlias = strtolower($var);

if (isset($uses[$loweredAlias])) {
return $uses[$loweredAlias];
}

return $var;
}

/**
* creates the transformer instance for the given class and generated bindings.
*
* @param string $class the class the transformer can handle
* @param array $bindings the bindings that need to be registered
* @param string $class the class the transformer can handle
* @param array $bindings the bindings that need to be registered
*/
private function createTransformer(string $class, array $bindings): Transformer
{
return new class($class, $bindings) implements Transformer {
public function __construct($class, $bindings)
{
$this->class = $class;
$this->class = $class;
$this->bindings = $bindings;
}

Expand Down

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