ok
Mini Shell
<?php
declare(strict_types=1);
namespace Doctrine\Common\Collections\Expr;
use ArrayAccess;
use Closure;
use RuntimeException;
use function explode;
use function in_array;
use function is_array;
use function is_scalar;
use function iterator_to_array;
use function method_exists;
use function preg_match;
use function preg_replace_callback;
use function str_contains;
use function str_ends_with;
use function str_starts_with;
use function strtoupper;
/**
* Walks an expression graph and turns it into a PHP closure.
*
* This closure can be used with {@Collection#filter()} and is used internally
* by {@ArrayCollection#select()}.
*/
class ClosureExpressionVisitor extends ExpressionVisitor
{
/**
* Accesses the field of a given object. This field has to be public
* directly or indirectly (through an accessor get*, is*, or a magic
* method, __get, __call).
*
* @param object|mixed[] $object
*
* @return mixed
*/
public static function getObjectFieldValue(object|array $object, string $field)
{
if (str_contains($field, '.')) {
[$field, $subField] = explode('.', $field, 2);
$object = self::getObjectFieldValue($object, $field);
return self::getObjectFieldValue($object, $subField);
}
if (is_array($object)) {
return $object[$field];
}
$accessors = ['get', 'is', ''];
foreach ($accessors as $accessor) {
$accessor .= $field;
if (method_exists($object, $accessor)) {
return $object->$accessor();
}
}
if (preg_match('/^is[A-Z]+/', $field) === 1 && method_exists($object, $field)) {
return $object->$field();
}
// __call should be triggered for get.
$accessor = $accessors[0] . $field;
if (method_exists($object, '__call')) {
return $object->$accessor();
}
if ($object instanceof ArrayAccess) {
return $object[$field];
}
if (isset($object->$field)) {
return $object->$field;
}
// camelcase field name to support different variable naming conventions
$ccField = preg_replace_callback('/_(.?)/', static fn ($matches) => strtoupper((string) $matches[1]), $field);
foreach ($accessors as $accessor) {
$accessor .= $ccField;
if (method_exists($object, $accessor)) {
return $object->$accessor();
}
}
return $object->$field;
}
/**
* Helper for sorting arrays of objects based on multiple fields + orientations.
*
* @return Closure
*/
public static function sortByField(string $name, int $orientation = 1, Closure|null $next = null)
{
if (! $next) {
$next = static fn (): int => 0;
}
return static function ($a, $b) use ($name, $next, $orientation): int {
$aValue = ClosureExpressionVisitor::getObjectFieldValue($a, $name);
$bValue = ClosureExpressionVisitor::getObjectFieldValue($b, $name);
if ($aValue === $bValue) {
return $next($a, $b);
}
return ($aValue > $bValue ? 1 : -1) * $orientation;
};
}
/**
* {@inheritDoc}
*/
public function walkComparison(Comparison $comparison)
{
$field = $comparison->getField();
$value = $comparison->getValue()->getValue();
return match ($comparison->getOperator()) {
Comparison::EQ => static fn ($object): bool => self::getObjectFieldValue($object, $field) === $value,
Comparison::NEQ => static fn ($object): bool => self::getObjectFieldValue($object, $field) !== $value,
Comparison::LT => static fn ($object): bool => self::getObjectFieldValue($object, $field) < $value,
Comparison::LTE => static fn ($object): bool => self::getObjectFieldValue($object, $field) <= $value,
Comparison::GT => static fn ($object): bool => self::getObjectFieldValue($object, $field) > $value,
Comparison::GTE => static fn ($object): bool => self::getObjectFieldValue($object, $field) >= $value,
Comparison::IN => static function ($object) use ($field, $value): bool {
$fieldValue = ClosureExpressionVisitor::getObjectFieldValue($object, $field);
return in_array($fieldValue, $value, is_scalar($fieldValue));
},
Comparison::NIN => static function ($object) use ($field, $value): bool {
$fieldValue = ClosureExpressionVisitor::getObjectFieldValue($object, $field);
return ! in_array($fieldValue, $value, is_scalar($fieldValue));
},
Comparison::CONTAINS => static fn ($object): bool => str_contains((string) self::getObjectFieldValue($object, $field), (string) $value),
Comparison::MEMBER_OF => static function ($object) use ($field, $value): bool {
$fieldValues = ClosureExpressionVisitor::getObjectFieldValue($object, $field);
if (! is_array($fieldValues)) {
$fieldValues = iterator_to_array($fieldValues);
}
return in_array($value, $fieldValues, true);
},
Comparison::STARTS_WITH => static fn ($object): bool => str_starts_with((string) self::getObjectFieldValue($object, $field), (string) $value),
Comparison::ENDS_WITH => static fn ($object): bool => str_ends_with((string) self::getObjectFieldValue($object, $field), (string) $value),
default => throw new RuntimeException('Unknown comparison operator: ' . $comparison->getOperator()),
};
}
/**
* {@inheritDoc}
*/
public function walkValue(Value $value)
{
return $value->getValue();
}
/**
* {@inheritDoc}
*/
public function walkCompositeExpression(CompositeExpression $expr)
{
$expressionList = [];
foreach ($expr->getExpressionList() as $child) {
$expressionList[] = $this->dispatch($child);
}
return match ($expr->getType()) {
CompositeExpression::TYPE_AND => $this->andExpressions($expressionList),
CompositeExpression::TYPE_OR => $this->orExpressions($expressionList),
CompositeExpression::TYPE_NOT => $this->notExpression($expressionList),
default => throw new RuntimeException('Unknown composite ' . $expr->getType()),
};
}
/** @param callable[] $expressions */
private function andExpressions(array $expressions): Closure
{
return static function ($object) use ($expressions): bool {
foreach ($expressions as $expression) {
if (! $expression($object)) {
return false;
}
}
return true;
};
}
/** @param callable[] $expressions */
private function orExpressions(array $expressions): Closure
{
return static function ($object) use ($expressions): bool {
foreach ($expressions as $expression) {
if ($expression($object)) {
return true;
}
}
return false;
};
}
/** @param callable[] $expressions */
private function notExpression(array $expressions): Closure
{
return static fn ($object) => ! $expressions[0]($object);
}
}
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