Файл: src/vendor/doctrine/collections/lib/Doctrine/Common/Collections/Expr/ClosureExpressionVisitor.php
Строк: 222
<?php
/*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the MIT license. For more information, see
* <http://www.doctrine-project.org>.
*/
namespace DoctrineCommonCollectionsExpr;
/**
* 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()}.
*
* @author Benjamin Eberlei <kontakt@beberlei.de>
* @since 2.3
*/
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 $object
* @param string $field
*
* @return mixed
*/
public static function getObjectFieldValue($object, $field)
{
if (is_array($object)) {
return $object[$field];
}
$accessors = array('get', 'is');
foreach ($accessors as $accessor) {
$accessor .= $field;
if ( ! method_exists($object, $accessor)) {
continue;
}
return $object->$accessor();
}
// __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];
}
return $object->$field;
}
/**
* Helper for sorting arrays of objects based on multiple fields + orientations.
*
* @param string $name
* @param int $orientation
* @param Closure $next
*
* @return Closure
*/
public static function sortByField($name, $orientation = 1, Closure $next = null)
{
if ( ! $next) {
$next = function() {
return 0;
};
}
return function ($a, $b) use ($name, $next, $orientation) {
$aValue = ClosureExpressionVisitor::getObjectFieldValue($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 = $comparison->getValue()->getValue(); // shortcut for walkValue()
switch ($comparison->getOperator()) {
case Comparison::EQ:
return function ($object) use ($field, $value) {
return ClosureExpressionVisitor::getObjectFieldValue($object, $field) === $value;
};
case Comparison::NEQ:
return function ($object) use ($field, $value) {
return ClosureExpressionVisitor::getObjectFieldValue($object, $field) !== $value;
};
case Comparison::LT:
return function ($object) use ($field, $value) {
return ClosureExpressionVisitor::getObjectFieldValue($object, $field) < $value;
};
case Comparison::LTE:
return function ($object) use ($field, $value) {
return ClosureExpressionVisitor::getObjectFieldValue($object, $field) <= $value;
};
case Comparison::GT:
return function ($object) use ($field, $value) {
return ClosureExpressionVisitor::getObjectFieldValue($object, $field) > $value;
};
case Comparison::GTE:
return function ($object) use ($field, $value) {
return ClosureExpressionVisitor::getObjectFieldValue($object, $field) >= $value;
};
case Comparison::IN:
return function ($object) use ($field, $value) {
return in_array(ClosureExpressionVisitor::getObjectFieldValue($object, $field), $value);
};
case Comparison::NIN:
return function ($object) use ($field, $value) {
return ! in_array(ClosureExpressionVisitor::getObjectFieldValue($object, $field), $value);
};
case Comparison::CONTAINS:
return function ($object) use ($field, $value) {
return false !== strpos(ClosureExpressionVisitor::getObjectFieldValue($object, $field), $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)
{
$expressionList = array();
foreach ($expr->getExpressionList() as $child) {
$expressionList[] = $this->dispatch($child);
}
switch($expr->getType()) {
case CompositeExpression::TYPE_AND:
return $this->andExpressions($expressionList);
case CompositeExpression::TYPE_OR:
return $this->orExpressions($expressionList);
default:
throw new RuntimeException("Unknown composite " . $expr->getType());
}
}
/**
* @param array $expressions
*
* @return callable
*/
private function andExpressions($expressions)
{
return function ($object) use ($expressions) {
foreach ($expressions as $expression) {
if ( ! $expression($object)) {
return false;
}
}
return true;
};
}
/**
* @param array $expressions
*
* @return callable
*/
private function orExpressions($expressions)
{
return function ($object) use ($expressions) {
foreach ($expressions as $expression) {
if ($expression($object)) {
return true;
}
}
return false;
};
}
}