<?php
namespace Illuminate\Support\Traits;
use CachingIterator;
use Exception;
use Illuminate\Contracts\Support\Arrayable;
use Illuminate\Contracts\Support\Jsonable;
use Illuminate\Support\Arr;
use Illuminate\Support\Collection;
use Illuminate\Support\Enumerable;
use Illuminate\Support\HigherOrderCollectionProxy;
use JsonSerializable;
use Symfony\Component\VarDumper\VarDumper;
use Traversable;
/**
* @property-read HigherOrderCollectionProxy $average
* @property-read HigherOrderCollectionProxy $avg
* @property-read HigherOrderCollectionProxy $contains
* @property-read HigherOrderCollectionProxy $each
* @property-read HigherOrderCollectionProxy $every
* @property-read HigherOrderCollectionProxy $filter
* @property-read HigherOrderCollectionProxy $first
* @property-read HigherOrderCollectionProxy $flatMap
* @property-read HigherOrderCollectionProxy $groupBy
* @property-read HigherOrderCollectionProxy $keyBy
* @property-read HigherOrderCollectionProxy $map
* @property-read HigherOrderCollectionProxy $max
* @property-read HigherOrderCollectionProxy $min
* @property-read HigherOrderCollectionProxy $partition
* @property-read HigherOrderCollectionProxy $reject
* @property-read HigherOrderCollectionProxy $sortBy
* @property-read HigherOrderCollectionProxy $sortByDesc
* @property-read HigherOrderCollectionProxy $sum
* @property-read HigherOrderCollectionProxy $unique
*/
trait EnumeratesValues
{
/**
* The methods that can be proxied.
*
* @var array
*/
protected static $proxies = [
'average', 'avg', 'contains', 'each', 'every', 'filter', 'first',
'flatMap', 'groupBy', 'keyBy', 'map', 'max', 'min', 'partition',
'reject', 'some', 'sortBy', 'sortByDesc', 'sum', 'unique',
];
/**
* Create a new collection instance if the value isn't one already.
*
* @param mixed $items
* @return static
*/
public static function make($items = [])
{
return new static($items);
}
/**
* Wrap the given value in a collection if applicable.
*
* @param mixed $value
* @return static
*/
public static function wrap($value)
{
return $value instanceof Enumerable
? new static($value)
: new static(Arr::wrap($value));
}
/**
* Get the underlying items from the given collection if applicable.
*
* @param array|static $value
* @return array
*/
public static function unwrap($value)
{
return $value instanceof Enumerable ? $value->all() : $value;
}
/**
* Alias for the "avg" method.
*
* @param callable|string|null $callback
* @return mixed
*/
public function average($callback = null)
{
return $this->avg($callback);
}
/**
* Alias for the "contains" method.
*
* @param mixed $key
* @param mixed $operator
* @param mixed $value
* @return bool
*/
public function some($key, $operator = null, $value = null)
{
return $this->contains(...func_get_args());
}
/**
* Determine if an item exists, using strict comparison.
*
* @param mixed $key
* @param mixed $value
* @return bool
*/
public function containsStrict($key, $value = null)
{
if (func_num_args() === 2) {
return $this->contains(function ($item) use ($key, $value) {
return data_get($item, $key) === $value;
});
}
if ($this->useAsCallable($key)) {
return ! is_null($this->first($key));
}
foreach ($this as $item) {
if ($item === $key) {
return true;
}
}
return false;
}
/**
* Dump the items and end the script.
*
* @param mixed ...$args
* @return void
*/
public function dd(...$args)
{
call_user_func_array([$this, 'dump'], $args);
die(1);
}
/**
* Dump the items.
*
* @return $this
*/
public function dump()
{
(new static(func_get_args()))
->push($this)
->each(function ($item) {
VarDumper::dump($item);
});
return $this;
}
/**
* Execute a callback over each item.
*
* @param callable $callback
* @return $this
*/
public function each(callable $callback)
{
foreach ($this as $key => $item) {
if ($callback($item, $key) === false) {
break;
}
}
return $this;
}
/**
* Execute a callback over each nested chunk of items.
*
* @param callable $callback
* @return static
*/
public function eachSpread(callable $callback)
{
return $this->each(function ($chunk, $key) use ($callback) {
$chunk[] = $key;
return $callback(...$chunk);
});
}
/**
* Determine if all items pass the given truth test.
*
* @param string|callable $key
* @param mixed $operator
* @param mixed $value
* @return bool
*/
public function every($key, $operator = null, $value = null)
{
if (func_num_args() === 1) {
$callback = $this->valueRetriever($key);
foreach ($this as $k => $v) {
if (! $callback($v, $k)) {
return false;
}
}
return true;
}
return $this->every($this->operatorForWhere(...func_get_args()));
}
/**
* Get the first item by the given key value pair.
*
* @param string $key
* @param mixed $operator
* @param mixed $value
* @return mixed
*/
public function firstWhere($key, $operator = null, $value = null)
{
return $this->first($this->operatorForWhere(...func_get_args()));
}
/**
* Determine if the collection is not empty.
*
* @return bool
*/
public function isNotEmpty()
{
return ! $this->isEmpty();
}
/**
* Run a map over each nested chunk of items.
*
* @param callable $callback
* @return static
*/
public function mapSpread(callable $callback)
{
return $this->map(function ($chunk, $key) use ($callback) {
$chunk[] = $key;
return $callback(...$chunk);
});
}
/**
* Run a grouping map over the items.
*
* The callback should return an associative array with a single key/value pair.
*
* @param callable $callback
* @return static
*/
public function mapToGroups(callable $callback)
{
$groups = $this->mapToDictionary($callback);
return $groups->map([$this, 'make']);
}
/**
* Map a collection and flatten the result by a single level.
*
* @param callable $callback
* @return static
*/
public function flatMap(callable $callback)
{
return $this->map($callback)->collapse();
}
/**
* Map the values into a new class.
*
* @param string $class
* @return static
*/
public function mapInto($class)
{
return $this->map(function ($value, $key) use ($class) {
return new $class($value, $key);
});
}
/**
* Get the min value of a given key.
*
* @param callable|string|null $callback
* @return mixed
*/
public function min($callback = null)
{
$callback = $this->valueRetriever($callback);
return $this->map(function ($value) use ($callback) {
return $callback($value);
})->filter(function ($value) {
return ! is_null($value);
})->reduce(function ($result, $value) {
return is_null($result) || $value < $result ? $value : $result;
});
}
/**
* Get the max value of a given key.
*
* @param callable|string|null $callback
* @return mixed
*/
public function max($callback = null)
{
$callback = $this->valueRetriever($callback);
return $this->filter(function ($value) {
return ! is_null($value);
})->reduce(function ($result, $item) use ($callback) {
$value = $callback($item);
return is_null($result) || $value > $result ? $value : $result;
});
}
/**
* "Paginate" the collection by slicing it into a smaller collection.
*
* @param int $page
* @param int $perPage
* @return static
*/
public function forPage($page, $perPage)
{
$offset = max(0, ($page - 1) * $perPage);
return $this->slice($offset, $perPage);
}
/**
* Partition the collection into two arrays using the given callback or key.
*
* @param callable|string $key
* @param mixed $operator
* @param mixed $value
* @return static
*/
public function partition($key, $operator = null, $value = null)
{
$passed = [];
$failed = [];
$callback = func_num_args() === 1
? $this->valueRetriever($key)
: $this->operatorForWhere(...func_get_args());
foreach ($this as $key => $item) {
if ($callback($item, $key)) {
$passed[$key] = $item;
} else {
$failed[$key] = $item;
}
}
return new static([new static($passed), new static($failed)]);
}
/**
* Get the sum of the given values.
*
* @param callable|string|null $callback
* @return mixed
*/
public function sum($callback = null)
{
if (is_null($callback)) {
$callback = function ($value) {
return $value;
};
} else {
$callback = $this->valueRetriever($callback);
}
return $this->reduce(function ($result, $item) use ($callback) {
return $result + $callback($item);
}, 0);
}
/**
* Apply the callback if the value is truthy.
*
* @param bool|mixed $value
* @param callable $callback
* @param callable $default
* @return static|mixed
*/
public function when($value, callable $callback, callable $default = null)
{
if ($value) {
return $callback($this, $value);
} elseif ($default) {
return $default($this, $value);
}
return $this;
}
/**
* Apply the callback if the collection is empty.
*
* @param callable $callback
* @param callable $default
* @return static|mixed
*/
public function whenEmpty(callable $callback, callable $default = null)
{
return $this->when($this->isEmpty(), $callback, $default);
}
/**
* Apply the callback if the collection is not empty.
*
* @param callable $callback
* @param callable $default
* @return static|mixed
*/
public function whenNotEmpty(callable $callback, callable $default = null)
{
return $this->when($this->isNotEmpty(), $callback, $default);
}
/**
* Apply the callback if the value is falsy.
*
* @param bool $value
* @param callable $callback
* @param callable $default
* @return static|mixed
*/
public function unless($value, callable $callback, callable $default = null)
{
return $this->when(! $value, $callback, $default);
}
/**
* Apply the callback unless the collection is empty.
*
* @param callable $callback
* @param callable $default
* @return static|mixed
*/
public function unlessEmpty(callable $callback, callable $default = null)
{
return $this->whenNotEmpty($callback, $default);
}
/**
* Apply the callback unless the collection is not empty.
*
* @param callable $callback
* @param callable $default
* @return static|mixed
*/
public function unlessNotEmpty(callable $callback, callable $default = null)
{
return $this->whenEmpty($callback, $default);
}
/**
* Filter items by the given key value pair.
*
* @param string $key
* @param mixed $operator
* @param mixed $value
* @return static
*/
public function where($key, $operator = null, $value = null)
{
return $this->filter($this->operatorForWhere(...func_get_args()));
}
/**
* Filter items by the given key value pair using strict comparison.
*
* @param string $key
* @param mixed $value
* @return static
*/
public function whereStrict($key, $value)
{
return $this->where($key, '===', $value);
}
/**
* Filter items by the given key value pair.
*
* @param string $key
* @param mixed $values
* @param bool $strict
* @return static
*/
public function whereIn($key, $values, $strict = false)
{
$values = $this->getArrayableItems($values);
return $this->filter(function ($item) use ($key, $values, $strict) {
return in_array(data_get($item, $key), $values, $strict);
});
}
/**
* Filter items by the given key value pair using strict comparison.
*
* @param string $key
* @param mixed $values
* @return static
*/
public function whereInStrict($key, $values)
{
return $this->whereIn($key, $values, true);
}
/**
* Filter items such that the value of the given key is between the given values.
*
* @param string $key
* @param array $values
* @return static
*/
public function whereBetween($key, $values)
{
return $this->where($key, '>=', reset($values))->where($key, '<=', end($values));
}
/**
* Filter items such that the value of the given key is not between the given values.
*
* @param string $key
* @param array $values
* @return static
*/
public function whereNotBetween($key, $values)
{
return $this->filter(function ($item) use ($key, $values) {
return data_get($item, $key) < reset($values) || data_get($item, $key) > end($values);
});
}
/**
* Filter items by the given key value pair.
*
* @param string $key
* @param mixed $values
* @param bool $strict
* @return static
*/
public function whereNotIn($key, $values, $strict = false)
{
$values = $this->getArrayableItems($values);
return $this->reject(function ($item) use ($key, $values, $strict) {
return in_array(data_get($item, $key), $values, $strict);
});
}
/**
* Filter items by the given key value pair using strict comparison.
*
* @param string $key
* @param mixed $values
* @return static
*/
public function whereNotInStrict($key, $values)
{
return $this->whereNotIn($key, $values, true);
}
/**
* Filter the items, removing any items that don't match the given type.
*
* @param string $type
* @return static
*/
public function whereInstanceOf($type)
{
return $this->filter(function ($value) use ($type) {
return $value instanceof $type;
});
}
/**
* Pass the collection to the given callback and return the result.
*
* @param callable $callback
* @return mixed
*/
public function pipe(callable $callback)
{
return $callback($this);
}
/**
* Pass the collection to the given callback and then return it.
*
* @param callable $callback
* @return $this
*/
public function tap(callable $callback)
{
$callback(clone $this);
return $this;
}
/**
* Create a collection of all elements that do not pass a given truth test.
*
* @param callable|mixed $callback
* @return static
*/
public function reject($callback = true)
{
$useAsCallable = $this->useAsCallable($callback);
return $this->filter(function ($value, $key) use ($callback, $useAsCallable) {
return $useAsCallable
? ! $callback($value, $key)
: $value != $callback;
});
}
/**
* Return only unique items from the collection array.
*
* @param string|callable|null $key
* @param bool $strict
* @return static
*/
public function unique($key = null, $strict = false)
{
$callback = $this->valueRetriever($key);
$exists = [];
return $this->reject(function ($item, $key) use ($callback, $strict, &$exists) {
if (in_array($id = $callback($item, $key), $exists, $strict)) {
return true;
}
$exists[] = $id;
});
}
/**
* Return only unique items from the collection array using strict comparison.
*
* @param string|callable|null $key
* @return static
*/
public function uniqueStrict($key = null)
{
return $this->unique($key, true);
}
/**
* Collect the values into a collection.
*
* @return \Illuminate\Support\Collection
*/
public function collect()
{
return new Collection($this->all());
}
/**
* Get the collection of items as a plain array.
*
* @return array
*/
public function toArray()
{
return $this->map(function ($value) {
return $value instanceof Arrayable ? $value->toArray() : $value;
})->all();
}
/**
* Convert the object into something JSON serializable.
*
* @return array
*/
public function jsonSerialize()
{
return array_map(function ($value) {
if ($value instanceof JsonSerializable) {
return $value->jsonSerialize();
} elseif ($value instanceof Jsonable) {
return json_decode($value->toJson(), true);
} elseif ($value instanceof Arrayable) {
return $value->toArray();
}
return $value;
}, $this->all());
}
/**
* Get the collection of items as JSON.
*
* @param int $options
* @return string
*/
public function toJson($options = 0)
{
return json_encode($this->jsonSerialize(), $options);
}
/**
* Get a CachingIterator instance.
*
* @param int $flags
* @return \CachingIterator
*/
public function getCachingIterator($flags = CachingIterator::CALL_TOSTRING)
{
return new CachingIterator($this->getIterator(), $flags);
}
/**
* Count the number of items in the collection using a given truth test.
*
* @param callable|null $callback
* @return static
*/
public function countBy($callback = null)
{
if (is_null($callback)) {
$callback = function ($value) {
return $value;
};
}
return new static($this->groupBy($callback)->map(function ($value) {
return $value->count();
}));
}
/**
* Convert the collection to its string representation.
*
* @return string
*/
public function __toString()
{
return $this->toJson();
}
/**
* Add a method to the list of proxied methods.
*
* @param string $method
* @return void
*/
public static function proxy($method)
{
static::$proxies[] = $method;
}
/**
* Dynamically access collection proxies.
*
* @param string $key
* @return mixed
*
* @throws \Exception
*/
public function __get($key)
{
if (! in_array($key, static::$proxies)) {
throw new Exception("Property [{$key}] does not exist on this collection instance.");
}
return new HigherOrderCollectionProxy($this, $key);
}
/**
* Results array of items from Collection or Arrayable.
*
* @param mixed $items
* @return array
*/
protected function getArrayableItems($items)
{
if (is_array($items)) {
return $items;
} elseif ($items instanceof Enumerable) {
return $items->all();
} elseif ($items instanceof Arrayable) {
return $items->toArray();
} elseif ($items instanceof Jsonable) {
return json_decode($items->toJson(), true);
} elseif ($items instanceof JsonSerializable) {
return (array) $items->jsonSerialize();
} elseif ($items instanceof Traversable) {
return iterator_to_array($items);
}
return (array) $items;
}
/**
* Get an operator checker callback.
*
* @param string $key
* @param string $operator
* @param mixed $value
* @return \Closure
*/
protected function operatorForWhere($key, $operator = null, $value = null)
{
if (func_num_args() === 1) {
$value = true;
$operator = '=';
}
if (func_num_args() === 2) {
$value = $operator;
$operator = '=';
}
return function ($item) use ($key, $operator, $value) {
$retrieved = data_get($item, $key);
$strings = array_filter([$retrieved, $value], function ($value) {
return is_string($value) || (is_object($value) && method_exists($value, '__toString'));
});
if (count($strings) < 2 && count(array_filter([$retrieved, $value], 'is_object')) == 1) {
return in_array($operator, ['!=', '<>', '!==']);
}
switch ($operator) {
default:
case '=':
case '==': return $retrieved == $value;
case '!=':
case '<>': return $retrieved != $value;
case '<': return $retrieved < $value;
case '>': return $retrieved > $value;
case '<=': return $retrieved <= $value;
case '>=': return $retrieved >= $value;
case '===': return $retrieved === $value;
case '!==': return $retrieved !== $value;
}
};
}
/**
* Determine if the given value is callable, but not a string.
*
* @param mixed $value
* @return bool
*/
protected function useAsCallable($value)
{
return ! is_string($value) && is_callable($value);
}
/**
* Get a value retrieving callback.
*
* @param callable|string|null $value
* @return callable
*/
protected function valueRetriever($value)
{
if ($this->useAsCallable($value)) {
return $value;
}
return function ($item) use ($value) {
return data_get($item, $value);
};
}
}