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phpcollection/src/PhpCollection/Set.php 0000644 00000030653 14736103327 0014222 0 ustar 00 <?php
namespace PhpCollection;
use PhpOption\None;
use PhpOption\Some;
/**
* Implementation of a Set.
*
* Each set guarantees that equal elements are only contained once in the Set.
*
* This implementation constraints Sets to either consist of objects that implement ObjectBasics, or objects that have
* an external ObjectBasicsHandler implementation, or simple scalars. These types cannot be mixed within the same Set.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
class Set implements SetInterface
{
const ELEM_TYPE_SCALAR = 1;
const ELEM_TYPE_OBJECT = 2;
const ELEM_TYPE_OBJECT_WITH_HANDLER = 3;
private $elementType;
private $elements = array();
private $elementCount = 0;
private $lookup = array();
public function __construct(array $elements = array())
{
$this->addAll($elements);
}
public function first()
{
if (empty($this->elements)) {
return None::create();
}
return new Some(reset($this->elements));
}
public function last()
{
if (empty($this->elements)) {
return None::create();
}
return new Some(end($this->elements));
}
public function getIterator()
{
return new \ArrayIterator(array_values($this->elements));
}
public function addSet(SetInterface $set)
{
$this->addAll($set->all());
}
public function take($number)
{
if ($number <= 0) {
throw new \InvalidArgumentException(sprintf('$number must be greater than 0, but got %d.', $number));
}
return $this->createNew(array_slice($this->elements, 0, $number));
}
/**
* Extracts element from the head while the passed callable returns true.
*
* @param callable $callable receives elements of this Set as first argument, and returns true/false.
*
* @return Set
*/
public function takeWhile($callable)
{
$newElements = array();
for ($i=0,$c=count($this->elements); $i<$c; $i++) {
if (call_user_func($callable, $this->elements[$i]) !== true) {
break;
}
$newElements[] = $this->elements[$i];
}
return $this->createNew($newElements);
}
public function drop($number)
{
if ($number <= 0) {
throw new \InvalidArgumentException(sprintf('The number must be greater than 0, but got %d.', $number));
}
return $this->createNew(array_slice($this->elements, $number));
}
public function dropRight($number)
{
if ($number <= 0) {
throw new \InvalidArgumentException(sprintf('The number must be greater than 0, but got %d.', $number));
}
return $this->createNew(array_slice($this->elements, 0, -1 * $number));
}
public function dropWhile($callable)
{
for ($i=0,$c=count($this->elements); $i<$c; $i++) {
if (true !== call_user_func($callable, $this->elements[$i])) {
break;
}
}
return $this->createNew(array_slice($this->elements, $i));
}
public function map($callable)
{
$newElements = array();
foreach ($this->elements as $i => $element) {
$newElements[$i] = $callable($element);
}
return $this->createNew($newElements);
}
public function reverse()
{
return $this->createNew(array_reverse($this->elements));
}
public function all()
{
return array_values($this->elements);
}
public function filterNot($callable)
{
return $this->filterInternal($callable, false);
}
public function filter($callable)
{
return $this->filterInternal($callable, true);
}
public function foldLeft($initialValue, $callable)
{
$value = $initialValue;
foreach ($this->elements as $elem) {
$value = call_user_func($callable, $value, $elem);
}
return $value;
}
public function foldRight($initialValue, $callable)
{
$value = $initialValue;
foreach (array_reverse($this->elements) as $elem) {
$value = call_user_func($callable, $elem, $value);
}
return $value;
}
public function addAll(array $elements)
{
foreach ($elements as $elem) {
$this->add($elem);
}
}
public function count()
{
return count($this->elements);
}
public function contains($elem)
{
if ($this->elementType === self::ELEM_TYPE_OBJECT) {
if ($elem instanceof ObjectBasics) {
return $this->containsObject($elem);
}
return false;
} elseif ($this->elementType === self::ELEM_TYPE_OBJECT_WITH_HANDLER) {
if (is_object($elem)) {
return $this->containsObjectWithHandler($elem, ObjectBasicsHandlerRegistry::getHandler(get_class($elem)));
}
return false;
} elseif ($this->elementType === self::ELEM_TYPE_SCALAR) {
if (is_scalar($elem)) {
return $this->containsScalar($elem);
}
return false;
}
return false;
}
public function remove($elem)
{
if ($this->elementType === self::ELEM_TYPE_OBJECT) {
if ($elem instanceof ObjectBasics) {
$this->removeObject($elem);
}
} elseif ($this->elementType === self::ELEM_TYPE_OBJECT_WITH_HANDLER) {
if (is_object($elem)) {
$this->removeObjectWithHandler($elem, ObjectBasicsHandlerRegistry::getHandler(get_class($elem)));
}
} elseif ($this->elementType === self::ELEM_TYPE_SCALAR) {
if (is_scalar($elem)) {
$this->removeScalar($elem);
}
}
}
public function isEmpty()
{
return empty($this->elements);
}
public function add($elem)
{
if ($this->elementType === null) {
if ($elem instanceof ObjectBasics) {
$this->addObject($elem);
} elseif (is_scalar($elem)) {
$this->addScalar($elem);
} else {
if (is_object($elem)) {
$this->addObjectWithHandler($elem, ObjectBasicsHandlerRegistry::getHandler(get_class($elem)));
} else {
throw new \LogicException(sprintf('The type of $elem ("%s") is not supported in sets.', gettype($elem)));
}
}
} elseif ($this->elementType === self::ELEM_TYPE_OBJECT) {
if ($elem instanceof ObjectBasics) {
$this->addObject($elem);
return;
}
if (is_object($elem)) {
throw new \LogicException(sprintf('This Set already contains object implement ObjectBasics, and cannot be mixed with objects that do not implement this interface like "%s".', get_class($elem)));
}
throw new \LogicException(sprintf('This Set already contains objects, and cannot be mixed with elements of type "%s".', gettype($elem)));
} elseif ($this->elementType === self::ELEM_TYPE_OBJECT_WITH_HANDLER) {
if (is_object($elem)) {
$this->addObjectWithHandler($elem, ObjectBasicsHandlerRegistry::getHandler(get_class($elem)));
return;
}
throw new \LogicException(sprintf('This Set already contains object with an external handler, and cannot be mixed with elements of type "%s".', gettype($elem)));
} elseif ($this->elementType === self::ELEM_TYPE_SCALAR) {
if (is_scalar($elem)) {
$this->addScalar($elem);
return;
}
throw new \LogicException(sprintf('This Set already contains scalars, and cannot be mixed with elements of type "%s".', gettype($elem)));
} else {
throw new \LogicException('Unknown element type in Set - should never be reached.');
}
}
protected function createNew(array $elements)
{
return new static($elements);
}
private function filterInternal($callable, $booleanKeep)
{
$newElements = array();
foreach ($this->elements as $element) {
if ($booleanKeep !== call_user_func($callable, $element)) {
continue;
}
$newElements[] = $element;
}
return $this->createNew($newElements);
}
private function containsScalar($elem)
{
if ( ! isset($this->lookup[$elem])) {
return false;
}
foreach ($this->lookup[$elem] as $index) {
if ($elem === $this->elements[$index]) {
return true;
}
}
return false;
}
private function containsObjectWithHandler($object, ObjectBasicsHandler $handler)
{
$hash = $handler->hash($object);
if ( ! isset($this->lookup[$hash])) {
return false;
}
foreach ($this->lookup[$hash] as $index) {
if ($handler->equals($object, $this->elements[$index])) {
return true;
}
}
return false;
}
private function containsObject(ObjectBasics $object)
{
$hash = $object->hash();
if ( ! isset($this->lookup[$hash])) {
return false;
}
foreach ($this->lookup[$hash] as $index) {
if ($object->equals($this->elements[$index])) {
return true;
}
}
return false;
}
private function removeScalar($elem)
{
if ( ! isset($this->lookup[$elem])) {
return;
}
foreach ($this->lookup[$elem] as $k => $index) {
if ($elem === $this->elements[$index]) {
$this->removeElement($elem, $k, $index);
break;
}
}
}
private function removeObjectWithHandler($object, ObjectBasicsHandler $handler)
{
$hash = $handler->hash($object);
if ( ! isset($this->lookup[$hash])) {
return;
}
foreach ($this->lookup[$hash] as $k => $index) {
if ($handler->equals($object, $this->elements[$index])) {
$this->removeElement($hash, $k, $index);
break;
}
}
}
private function removeObject(ObjectBasics $object)
{
$hash = $object->hash();
if ( ! isset($this->lookup[$hash])) {
return;
}
foreach ($this->lookup[$hash] as $k => $index) {
if ($object->equals($this->elements[$index])) {
$this->removeElement($hash, $k, $index);
break;
}
}
}
private function removeElement($hash, $lookupIndex, $storageIndex)
{
unset($this->lookup[$hash][$lookupIndex]);
if (empty($this->lookup[$hash])) {
unset($this->lookup[$hash]);
}
unset($this->elements[$storageIndex]);
}
private function addScalar($elem)
{
if (isset($this->lookup[$elem])) {
foreach ($this->lookup[$elem] as $index) {
if ($this->elements[$index] === $elem) {
return; // Already exists.
}
}
}
$this->insertElement($elem, $elem);
$this->elementType = self::ELEM_TYPE_SCALAR;
}
private function addObjectWithHandler($object, ObjectBasicsHandler $handler)
{
$hash = $handler->hash($object);
if (isset($this->lookup[$hash])) {
foreach ($this->lookup[$hash] as $index) {
if ($handler->equals($object, $this->elements[$index])) {
return; // Already exists.
}
}
}
$this->insertElement($object, $hash);
$this->elementType = self::ELEM_TYPE_OBJECT_WITH_HANDLER;
}
private function addObject(ObjectBasics $elem)
{
$hash = $elem->hash();
if (isset($this->lookup[$hash])) {
foreach ($this->lookup[$hash] as $index) {
if ($elem->equals($this->elements[$index])) {
return; // Element already exists.
}
}
}
$this->insertElement($elem, $hash);
$this->elementType = self::ELEM_TYPE_OBJECT;
}
private function insertElement($elem, $hash)
{
$index = $this->elementCount++;
$this->elements[$index] = $elem;
$this->lookup[$hash][] = $index;
}
} phpcollection/src/PhpCollection/Map.php 0000644 00000001462 14736103327 0014200 0 ustar 00 <?php
/*
* Copyright 2012 Johannes M. Schmitt <schmittjoh@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace PhpCollection;
class Map extends AbstractMap implements SortableInterface
{
public function sortWith($callable)
{
uksort($this->elements, $callable);
}
} phpcollection/src/PhpCollection/Sequence.php 0000644 00000002136 14736103327 0015232 0 ustar 00 <?php
/*
* Copyright 2012 Johannes M. Schmitt <schmittjoh@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace PhpCollection;
/**
* Unsorted sequence implementation.
*
* Characteristics:
*
* - Keys: consequentially numbered, without gaps
* - Values: anything, duplicates allowed
* - Ordering: same as input unless when explicitly sorted
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
class Sequence extends AbstractSequence implements SortableInterface
{
public function sortWith($callable)
{
usort($this->elements, $callable);
}
} phpcollection/src/PhpCollection/MapInterface.php 0000644 00000010222 14736103327 0016013 0 ustar 00 <?php
/*
* Copyright 2012 Johannes M. Schmitt <schmittjoh@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace PhpCollection;
use PhpOption\Option;
/**
* Basic map interface.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
interface MapInterface extends CollectionInterface
{
/**
* Returns the first element in the collection if available.
*
* @return Option on array<K,V>
*/
public function first();
/**
* Returns the last element in the collection if available.
*
* @return Option on array<K,V>
*/
public function last();
/**
* Returns all elements in this collection.
*
* @return array
*/
public function all();
/**
* Searches the collection for an element.
*
* @param callable $callable receives the element as first argument, and returns true, or false
*
* @return Option on array<K,V>
*/
public function find($callable);
/**
* Returns the value associated with the given key.
*
* @param mixed $key
*
* @return Option on V
*/
public function get($key);
/**
* Returns whether this map contains a given key.
*
* @param mixed $key
*
* @return boolean
*/
public function containsKey($key);
/**
* Puts a new element in the map.
*
* @param mixed $key
* @param mixed $value
*
* @return void
*/
public function set($key, $value);
/**
* Removes an element from the map.
*
* @param mixed $key
*
* @return mixed
*/
public function remove($key);
/**
* Adds all another map to this map, and returns itself.
*
* @param MapInterface $map
*
* @return MapInterface
*/
public function addMap(MapInterface $map);
/**
* Returns an array with the keys.
*
* @return array
*/
public function keys();
/**
* Returns an array with the values.
*
* @return array
*/
public function values();
/**
* Returns a new sequence by omitting the given number of elements from the beginning.
*
* If the passed number is greater than the available number of elements, all will be removed.
*
* @param integer $number
*
* @return MapInterface
*/
public function drop($number);
/**
* Returns a new sequence by omitting the given number of elements from the end.
*
* If the passed number is greater than the available number of elements, all will be removed.
*
* @param integer $number
*
* @return MapInterface
*/
public function dropRight($number);
/**
* Returns a new sequence by omitting elements from the beginning for as long as the callable returns true.
*
* @param callable $callable Receives the element to drop as first argument, and returns true (drop), or false (stop).
*
* @return MapInterface
*/
public function dropWhile($callable);
/**
* Creates a new collection by taking the given number of elements from the beginning
* of the current collection.
*
* If the passed number is greater than the available number of elements, then all elements
* will be returned as a new collection.
*
* @param integer $number
*
* @return MapInterface
*/
public function take($number);
/**
* Creates a new collection by taking elements from the current collection
* for as long as the callable returns true.
*
* @param callable $callable
*
* @return MapInterface
*/
public function takeWhile($callable);
}
phpcollection/src/PhpCollection/SetInterface.php 0000644 00000006173 14736103327 0016043 0 ustar 00 <?php
namespace PhpCollection;
use PhpOption\Option;
/**
* Interface for sets.
*
* Each Set contains equal values only once.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
interface SetInterface extends CollectionInterface, \IteratorAggregate
{
/**
* @param object|scalar $elem
* @return void
*/
public function add($elem);
/**
* @param object|scalar $elements
* @return void
*/
public function addAll(array $elements);
/**
* @param object|scalar $elem
* @return void
*/
public function remove($elem);
/**
* Returns the first element in the collection if available.
*
* @return Option
*/
public function first();
/**
* Returns the last element in the collection if available.
*
* @return Option
*/
public function last();
/**
* Returns all elements in this Set.
*
* @return array
*/
public function all();
/**
* Returns a new Set with all elements in reverse order.
*
* @return SetInterface
*/
public function reverse();
/**
* Adds the elements of another Set to this Set.
*
* @param SetInterface $seq
*
* @return SetInterface
*/
public function addSet(SetInterface $seq);
/**
* Returns a new Set by omitting the given number of elements from the beginning.
*
* If the passed number is greater than the available number of elements, all will be removed.
*
* @param integer $number
*
* @return SetInterface
*/
public function drop($number);
/**
* Returns a new Set by omitting the given number of elements from the end.
*
* If the passed number is greater than the available number of elements, all will be removed.
*
* @param integer $number
*
* @return SetInterface
*/
public function dropRight($number);
/**
* Returns a new Set by omitting elements from the beginning for as long as the callable returns true.
*
* @param callable $callable Receives the element to drop as first argument, and returns true (drop), or false (stop).
*
* @return SetInterface
*/
public function dropWhile($callable);
/**
* Creates a new collection by taking the given number of elements from the beginning
* of the current collection.
*
* If the passed number is greater than the available number of elements, then all elements
* will be returned as a new collection.
*
* @param integer $number
*
* @return CollectionInterface
*/
public function take($number);
/**
* Creates a new collection by taking elements from the current collection
* for as long as the callable returns true.
*
* @param callable $callable
*
* @return CollectionInterface
*/
public function takeWhile($callable);
/**
* Creates a new collection by applying the passed callable to all elements
* of the current collection.
*
* @param callable $callable
* @return CollectionInterface
*/
public function map($callable);
} phpcollection/src/PhpCollection/ObjectBasics.php 0000644 00000002406 14736103327 0016015 0 ustar 00 <?php
namespace PhpCollection;
/**
* Interface that must be implemented by objects that are used as keys, or in sets.
*
* For entities, you can use the "EntityLikeObject" trait.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
interface ObjectBasics
{
/**
* Produces a hash for the given object.
*
* If two objects are equal (as per the equals() method), the hash() method must produce
* the same hash for them.
*
* The reverse can, but does not necessarily have to be true. That is, if two objects have the
* same hash, they do not necessarily have to be equal, but the equals() method must be called
* to be sure.
*
* When implementing this method try to use a simple and fast algorithm that produces reasonably
* different results for non-equal objects, and shift the heavy comparison logic to equals().
*
* @return string|integer
*/
public function hash();
/**
* Whether two objects are equal.
*
* This can compare by referential equality (===), or in case of value objects like (\DateTime) compare
* the individual properties of the objects; it's up to the implementation.
*
* @return boolean
*/
public function equals(ObjectBasics $other);
} phpcollection/src/PhpCollection/AbstractSequence.php 0000644 00000021576 14736103327 0016727 0 ustar 00 <?php
/*
* Copyright 2012 Johannes M. Schmitt <schmittjoh@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace PhpCollection;
use PhpOption\Some;
use PhpOption\None;
use PhpOption\Option;
use OutOfBoundsException;
/**
* A sequence with numerically indexed elements.
*
* This is rawly equivalent to an array with only numeric keys.
* There are no restrictions on how many same values may occur in the sequence.
*
* This sequence is mutable.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
class AbstractSequence extends AbstractCollection implements \IteratorAggregate, SequenceInterface
{
protected $elements;
/**
* @param array $elements
*/
public function __construct(array $elements = array())
{
$this->elements = array_values($elements);
}
public function addSequence(SequenceInterface $seq)
{
$this->addAll($seq->all());
}
public function indexOf($searchedElement)
{
foreach ($this->elements as $i => $element) {
if ($searchedElement === $element) {
return $i;
}
}
return -1;
}
public function lastIndexOf($searchedElement)
{
for ($i=count($this->elements)-1; $i>=0; $i--) {
if ($this->elements[$i] === $searchedElement) {
return $i;
}
}
return -1;
}
public function reverse()
{
return $this->createNew(array_reverse($this->elements));
}
public function isDefinedAt($index)
{
return isset($this->elements[$index]);
}
/**
* Returns a filtered sequence.
*
* @param callable $callable receives the element and must return true (= keep) or false (= remove).
*
* @return AbstractSequence
*/
public function filter($callable)
{
return $this->filterInternal($callable, true);
}
public function map($callable)
{
$newElements = array();
foreach ($this->elements as $i => $element) {
$newElements[$i] = $callable($element);
}
return $this->createNew($newElements);
}
/**
* Returns a filtered sequence.
*
* @param callable $callable receives the element and must return true (= remove) or false (= keep).
*
* @return AbstractSequence
*/
public function filterNot($callable)
{
return $this->filterInternal($callable, false);
}
private function filterInternal($callable, $booleanKeep)
{
$newElements = array();
foreach ($this->elements as $element) {
if ($booleanKeep !== call_user_func($callable, $element)) {
continue;
}
$newElements[] = $element;
}
return $this->createNew($newElements);
}
public function foldLeft($initialValue, $callable)
{
$value = $initialValue;
foreach ($this->elements as $elem) {
$value = call_user_func($callable, $value, $elem);
}
return $value;
}
public function foldRight($initialValue, $callable)
{
$value = $initialValue;
foreach (array_reverse($this->elements) as $elem) {
$value = call_user_func($callable, $elem, $value);
}
return $value;
}
/**
* Finds the first index where the given callable returns true.
*
* @param callable $callable
*
* @return integer the index, or -1 if the predicate is not true for any element.
*/
public function indexWhere($callable)
{
foreach ($this->elements as $i => $element) {
if (call_user_func($callable, $element) === true) {
return $i;
}
}
return -1;
}
public function lastIndexWhere($callable)
{
for ($i=count($this->elements)-1; $i>=0; $i--) {
if (call_user_func($callable, $this->elements[$i]) === true) {
return $i;
}
}
return -1;
}
public function last()
{
if (empty($this->elements)) {
return None::create();
}
return new Some(end($this->elements));
}
public function first()
{
if (empty($this->elements)) {
return None::create();
}
return new Some(reset($this->elements));
}
public function indices()
{
return array_keys($this->elements);
}
/**
* Returns an element based on its index (0-based).
*
* @param integer $index
*
* @return T
*/
public function get($index)
{
if ( ! isset($this->elements[$index])) {
throw new OutOfBoundsException(sprintf('The index "%s" does not exist in this sequence.', $index));
}
return $this->elements[$index];
}
/**
* Removes the element at the given index, and returns it.
*
* @param int $index
*
* @return T
*
* @throws \OutOfBoundsException If there is no element at the given index.
*/
public function remove($index)
{
if ( ! isset($this->elements[$index])) {
throw new OutOfBoundsException(sprintf('The index "%d" is not in the interval [0, %d).', $index, count($this->elements)));
}
$element = $this->elements[$index];
unset($this->elements[$index]);
$this->elements = array_values($this->elements);
return $element;
}
/**
* Updates the element at the given index (0-based).
*
* @param integer $index
* @param T $value
*/
public function update($index, $value)
{
if ( ! isset($this->elements[$index])) {
throw new \InvalidArgumentException(sprintf('There is no element at index "%d".', $index));
}
$this->elements[$index] = $value;
}
public function isEmpty()
{
return empty($this->elements);
}
public function all()
{
return $this->elements;
}
public function add($newElement)
{
$this->elements[] = $newElement;
}
public function addAll(array $addedElements)
{
foreach ($addedElements as $newElement) {
$this->elements[] = $newElement;
}
}
public function take($number)
{
if ($number <= 0) {
throw new \InvalidArgumentException(sprintf('$number must be greater than 0, but got %d.', $number));
}
return $this->createNew(array_slice($this->elements, 0, $number));
}
/**
* Extracts element from the head while the passed callable returns true.
*
* @param callable $callable receives elements of this sequence as first argument, and returns true/false.
*
* @return Sequence
*/
public function takeWhile($callable)
{
$newElements = array();
for ($i=0,$c=count($this->elements); $i<$c; $i++) {
if (call_user_func($callable, $this->elements[$i]) !== true) {
break;
}
$newElements[] = $this->elements[$i];
}
return $this->createNew($newElements);
}
public function drop($number)
{
if ($number <= 0) {
throw new \InvalidArgumentException(sprintf('The number must be greater than 0, but got %d.', $number));
}
return $this->createNew(array_slice($this->elements, $number));
}
public function dropRight($number)
{
if ($number <= 0) {
throw new \InvalidArgumentException(sprintf('The number must be greater than 0, but got %d.', $number));
}
return $this->createNew(array_slice($this->elements, 0, -1 * $number));
}
public function dropWhile($callable)
{
for ($i=0,$c=count($this->elements); $i<$c; $i++) {
if (true !== call_user_func($callable, $this->elements[$i])) {
break;
}
}
return $this->createNew(array_slice($this->elements, $i));
}
public function exists($callable)
{
foreach ($this as $elem) {
if ($callable($elem) === true) {
return true;
}
}
return false;
}
public function count()
{
return count($this->elements);
}
public function getIterator()
{
return new \ArrayIterator($this->elements);
}
protected function createNew(array $elements)
{
return new static($elements);
}
} phpcollection/src/PhpCollection/AbstractCollection.php 0000644 00000002475 14736103327 0017247 0 ustar 00 <?php
/*
* Copyright 2012 Johannes M. Schmitt <schmittjoh@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace PhpCollection;
use PhpOption\LazyOption;
use PhpOption\Some;
use PhpOption\None;
abstract class AbstractCollection
{
public function contains($searchedElem)
{
foreach ($this as $elem) {
if ($elem === $searchedElem) {
return true;
}
}
return false;
}
public function find($callable)
{
$self = $this;
return new LazyOption(function() use ($callable, $self) {
foreach ($self as $elem) {
if (call_user_func($callable, $elem) === true) {
return new Some($elem);
}
}
return None::create();
});
}
} phpcollection/src/PhpCollection/ObjectBasicsHandler.php 0000644 00000001241 14736103327 0017307 0 ustar 00 <?php
namespace PhpCollection;
/**
* Interface for external handlers that provide ObjectBasics functionality.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
interface ObjectBasicsHandler
{
/**
* @param object $object This object is guaranteed to be of the type the handler was registered for.
* @return string|integer
*/
public function hash($object);
/**
* @param object $firstObject This object is guaranteed to be of the type the handler was registered for.
* @param object $secondObject This might be an object of any class.
* @return boolean
*/
public function equals($firstObject, $secondObject);
} phpcollection/src/PhpCollection/SortedSequence.php 0000644 00000005420 14736103327 0016412 0 ustar 00 <?php
/*
* Copyright 2012 Johannes M. Schmitt <schmittjoh@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace PhpCollection;
/**
* A sequence with a fixed sort-order.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
class SortedSequence extends AbstractSequence
{
private $sortFunc;
public function __construct($sortFunc, array $elements = array())
{
usort($elements, $sortFunc);
parent::__construct($elements);
$this->sortFunc = $sortFunc;
}
public function add($newElement)
{
$added = false;
$newElements = array();
foreach ($this->elements as $element) {
// We insert the new element before the first element that is greater than itself.
if ( ! $added && (integer) call_user_func($this->sortFunc, $newElement, $element) < 0) {
$newElements[] = $newElement;
$added = true;
}
$newElements[] = $element;
}
if ( ! $added) {
$newElements[] = $newElement;
}
$this->elements = $newElements;
}
public function addAll(array $addedElements)
{
usort($addedElements, $this->sortFunc);
$newElements = array();
foreach ($this->elements as $element) {
if ( ! empty($addedElements)) {
foreach ($addedElements as $i => $newElement) {
// If the currently looked at $newElement is not smaller than $element, then we can also conclude
// that all other new elements are also not smaller than $element as we have ordered them before.
if ((integer) call_user_func($this->sortFunc, $newElement, $element) > -1) {
break;
}
$newElements[] = $newElement;
unset($addedElements[$i]);
}
}
$newElements[] = $element;
}
if ( ! empty($addedElements)) {
foreach ($addedElements as $newElement) {
$newElements[] = $newElement;
}
}
$this->elements = $newElements;
}
protected function createNew(array $elements)
{
return new static($this->sortFunc, $elements);
}
} phpcollection/src/PhpCollection/SequenceInterface.php 0000644 00000013402 14736103327 0017051 0 ustar 00 <?php
/*
* Copyright 2012 Johannes M. Schmitt <schmittjoh@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace PhpCollection;
use PhpOption\Option;
/**
* Interface for mutable sequences.
*
* Equality of elements in the sequence is established via a shallow comparison (===).
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
interface SequenceInterface extends CollectionInterface
{
/**
* Returns the first element in the collection if available.
*
* @return Option
*/
public function first();
/**
* Returns the last element in the collection if available.
*
* @return Option
*/
public function last();
/**
* Returns all elements in this sequence.
*
* @return array
*/
public function all();
/**
* Returns a new Sequence with all elements in reverse order.
*
* @return SequenceInterface
*/
public function reverse();
/**
* Adds the elements of another sequence to this sequence.
*
* @param SequenceInterface $seq
*
* @return SequenceInterface
*/
public function addSequence(SequenceInterface $seq);
/**
* Returns the index of the passed element.
*
* @param mixed $elem
*
* @return integer the index (0-based), or -1 if not found
*/
public function indexOf($elem);
/**
* Returns the last index of the passed element.
*
* @param mixed $elem
* @return integer the index (0-based), or -1 if not found
*/
public function lastIndexOf($elem);
/**
* Returns whether the given index is defined in the sequence.
*
* @param integer $index (0-based)
* @return boolean
*/
public function isDefinedAt($index);
/**
* Returns the first index where the given callable returns true.
*
* @param callable $callable receives the element as first argument, and returns true, or false
*
* @return integer the index (0-based), or -1 if the callable returns false for all elements
*/
public function indexWhere($callable);
/**
* Returns the last index where the given callable returns true.
*
* @param callable $callable receives the element as first argument, and returns true, or false
*
* @return integer the index (0-based), or -1 if the callable returns false for all elements
*/
public function lastIndexWhere($callable);
/**
* Returns all indices of this collection.
*
* @return integer[]
*/
public function indices();
/**
* Returns the element at the given index.
*
* @param integer $index (0-based)
*
* @return mixed
*/
public function get($index);
/**
* Adds an element to the sequence.
*
* @param mixed $elem
*
* @return void
*/
public function add($elem);
/**
* Removes the element at the given index, and returns it.
*
* @param integer $index
*
* @return mixed
*/
public function remove($index);
/**
* Adds all elements to the sequence.
*
* @param array $elements
*
* @return void
*/
public function addAll(array $elements);
/**
* Updates the value at the given index.
*
* @param integer $index
* @param mixed $value
*
* @return void
*/
public function update($index, $value);
/**
* Returns a new sequence by omitting the given number of elements from the beginning.
*
* If the passed number is greater than the available number of elements, all will be removed.
*
* @param integer $number
*
* @return SequenceInterface
*/
public function drop($number);
/**
* Returns a new sequence by omitting the given number of elements from the end.
*
* If the passed number is greater than the available number of elements, all will be removed.
*
* @param integer $number
*
* @return SequenceInterface
*/
public function dropRight($number);
/**
* Returns a new sequence by omitting elements from the beginning for as long as the callable returns true.
*
* @param callable $callable Receives the element to drop as first argument, and returns true (drop), or false (stop).
*
* @return SequenceInterface
*/
public function dropWhile($callable);
/**
* Creates a new collection by taking the given number of elements from the beginning
* of the current collection.
*
* If the passed number is greater than the available number of elements, then all elements
* will be returned as a new collection.
*
* @param integer $number
*
* @return CollectionInterface
*/
public function take($number);
/**
* Creates a new collection by taking elements from the current collection
* for as long as the callable returns true.
*
* @param callable $callable
*
* @return CollectionInterface
*/
public function takeWhile($callable);
/**
* Creates a new collection by applying the passed callable to all elements
* of the current collection.
*
* @param callable $callable
* @return CollectionInterface
*/
public function map($callable);
}
phpcollection/src/PhpCollection/AbstractMap.php 0000644 00000016023 14736103327 0015663 0 ustar 00 <?php
/*
* Copyright 2012 Johannes M. Schmitt <schmittjoh@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace PhpCollection;
use PhpOption\Some;
use PhpOption\None;
/**
* A simple map implementation which basically wraps an array with an object oriented interface.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
class AbstractMap extends AbstractCollection implements \IteratorAggregate, MapInterface
{
protected $elements;
public function __construct(array $elements = array())
{
$this->elements = $elements;
}
public function set($key, $value)
{
$this->elements[$key] = $value;
}
public function exists($callable)
{
foreach ($this as $k => $v) {
if ($callable($k, $v) === true) {
return true;
}
}
return false;
}
/**
* Sets all key/value pairs in the map.
*
* @param array $kvMap
*
* @return void
*/
public function setAll(array $kvMap)
{
$this->elements = array_merge($this->elements, $kvMap);
}
public function addMap(MapInterface $map)
{
foreach ($map as $k => $v) {
$this->elements[$k] = $v;
}
}
public function get($key)
{
if (isset($this->elements[$key])) {
return new Some($this->elements[$key]);
}
return None::create();
}
public function all()
{
return $this->elements;
}
public function remove($key)
{
if ( ! isset($this->elements[$key])) {
throw new \InvalidArgumentException(sprintf('The map has no key named "%s".', $key));
}
$element = $this->elements[$key];
unset($this->elements[$key]);
return $element;
}
public function clear()
{
$this->elements = array();
}
public function first()
{
if (empty($this->elements)) {
return None::create();
}
$elem = reset($this->elements);
return new Some(array(key($this->elements), $elem));
}
public function last()
{
if (empty($this->elements)) {
return None::create();
}
$elem = end($this->elements);
return new Some(array(key($this->elements), $elem));
}
public function contains($elem)
{
foreach ($this->elements as $existingElem) {
if ($existingElem === $elem) {
return true;
}
}
return false;
}
public function containsKey($key)
{
return isset($this->elements[$key]);
}
public function isEmpty()
{
return empty($this->elements);
}
/**
* Returns a new filtered map.
*
* @param callable $callable receives the element and must return true (= keep), or false (= remove).
*
* @return AbstractMap
*/
public function filter($callable)
{
return $this->filterInternal($callable, true);
}
/**
* Returns a new filtered map.
*
* @param callable $callable receives the element and must return true (= remove), or false (= keep).
*
* @return AbstractMap
*/
public function filterNot($callable)
{
return $this->filterInternal($callable, false);
}
/**
* @param callable $callable
* @param boolean $booleanKeep
*/
private function filterInternal($callable, $booleanKeep)
{
$newElements = array();
foreach ($this->elements as $k => $element) {
if ($booleanKeep !== call_user_func($callable, $element)) {
continue;
}
$newElements[$k] = $element;
}
return $this->createNew($newElements);
}
public function foldLeft($initialValue, $callable)
{
$value = $initialValue;
foreach ($this->elements as $elem) {
$value = call_user_func($callable, $value, $elem);
}
return $value;
}
public function foldRight($initialValue, $callable)
{
$value = $initialValue;
foreach (array_reverse($this->elements) as $elem) {
$value = call_user_func($callable, $elem, $value);
}
return $value;
}
public function dropWhile($callable)
{
$newElements = array();
$stopped = false;
foreach ($this->elements as $k => $v) {
if ( ! $stopped) {
if (call_user_func($callable, $k, $v) === true) {
continue;
}
$stopped = true;
}
$newElements[$k] = $v;
}
return $this->createNew($newElements);
}
public function drop($number)
{
if ($number <= 0) {
throw new \InvalidArgumentException(sprintf('The number must be greater than 0, but got %d.', $number));
}
return $this->createNew(array_slice($this->elements, $number, null, true));
}
public function dropRight($number)
{
if ($number <= 0) {
throw new \InvalidArgumentException(sprintf('The number must be greater than 0, but got %d.', $number));
}
return $this->createNew(array_slice($this->elements, 0, -1 * $number, true));
}
public function take($number)
{
if ($number <= 0) {
throw new \InvalidArgumentException(sprintf('The number must be greater than 0, but got %d.', $number));
}
return $this->createNew(array_slice($this->elements, 0, $number, true));
}
public function takeWhile($callable)
{
$newElements = array();
foreach ($this->elements as $k => $v) {
if (call_user_func($callable, $k, $v) !== true) {
break;
}
$newElements[$k] = $v;
}
return $this->createNew($newElements);
}
public function find($callable)
{
foreach ($this->elements as $k => $v) {
if (call_user_func($callable, $k, $v) === true) {
return new Some(array($k, $v));
}
}
return None::create();
}
public function keys()
{
return array_keys($this->elements);
}
public function values()
{
return array_values($this->elements);
}
public function count()
{
return count($this->elements);
}
public function getIterator()
{
return new \ArrayIterator($this->elements);
}
protected function createNew(array $elements)
{
return new static($elements);
}
}
phpcollection/src/PhpCollection/SortableInterface.php 0000644 00000001504 14736103327 0017054 0 ustar 00 <?php
/*
* Copyright 2012 Johannes M. Schmitt <schmittjoh@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace PhpCollection;
/**
* Interface for sortable collections.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
interface SortableInterface
{
public function sortWith($callable);
} phpcollection/src/PhpCollection/CollectionInterface.php 0000644 00000005325 14736103327 0017401 0 ustar 00 <?php
/*
* Copyright 2012 Johannes M. Schmitt <schmittjoh@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace PhpCollection;
/**
* Basic interface which adds some behaviors, and a few methods common to all collections.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
interface CollectionInterface extends \Traversable, \Countable
{
/**
* Returns whether this collection contains the passed element.
*
* @param mixed $elem
*
* @return boolean
*/
public function contains($elem);
/**
* Returns whether the collection is empty.
*
* @return boolean
*/
public function isEmpty();
/**
* Returns a filtered collection of the same type.
*
* Removes all elements for which the provided callable returns false.
*
* @param callable $callable receives an element of the collection and must return true (= keep) or false (= remove).
*
* @return CollectionInterface
*/
public function filter($callable);
/**
* Returns a filtered collection of the same type.
*
* Removes all elements for which the provided callable returns true.
*
* @param callable $callable receives an element of the collection and must return true (= remove) or false (= keep).
*
* @return CollectionInterface
*/
public function filterNot($callable);
/**
* Applies the callable to an initial value and each element, going left to right.
*
* @param mixed $initialValue
* @param callable $callable receives the current value (the first time this equals $initialValue) and the element
*
* @return mixed the last value returned by $callable, or $initialValue if collection is empty.
*/
public function foldLeft($initialValue, $callable);
/**
* Applies the callable to each element, and an initial value, going right to left.
*
* @param mixed $initialValue
* @param callable $callable receives the element, and the current value (the first time this equals $initialValue).
* @return mixed the last value returned by $callable, or $initialValue if collection is empty.
*/
public function foldRight($initialValue, $callable);
} phpcollection/src/PhpCollection/ObjectBasicsHandler/DateTimeHandler.php 0000644 00000001417 14736103327 0022306 0 ustar 00 <?php
namespace PhpCollection\ObjectBasicsHandler;
use PhpCollection\ObjectBasicsHandler;
class DateTimeHandler implements ObjectBasicsHandler
{
public function hash($object)
{
if ( ! $object instanceof \DateTime) {
throw new \LogicException('$object must be an instance of \DateTime.');
}
return $object->getTimestamp();
}
public function equals($thisObject, $otherObject)
{
if ( ! $thisObject instanceof \DateTime) {
throw new \LogicException('$thisObject must be an instance of \DateTime.');
}
if ( ! $otherObject instanceof \DateTime) {
return false;
}
return $thisObject->format(\DateTime::ISO8601) === $otherObject->format(\DateTime::ISO8601);
}
} phpcollection/src/PhpCollection/ObjectBasicsHandler/IdentityHandler.php 0000644 00000000466 14736103327 0022406 0 ustar 00 <?php
namespace PhpCollection\ObjectBasicsHandler;
use PhpCollection\ObjectBasicsHandler;
class IdentityHandler implements ObjectBasicsHandler
{
public function hash($object)
{
return spl_object_hash($object);
}
public function equals($a, $b)
{
return $a === $b;
}
} phpcollection/src/PhpCollection/ObjectBasicsHandlerRegistry.php 0000644 00000005353 14736103327 0021050 0 ustar 00 <?php
namespace PhpCollection;
use PhpCollection\ObjectBasicsHandler\IdentityHandler;
/**
* Registry for handlers that provide ObjectBasics functionality for classes.
*
* You want to register a handler if you cannot implement the ObjectBasics interface, for example
* because a class is provided by a third-party package, or built into PHP.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
abstract class ObjectBasicsHandlerRegistry
{
private static $handlers = array(
'DateTime' => 'PhpCollection\\ObjectBasicsHandler\\DateTimeHandler',
);
private static $defaultObjectHandler;
private static $aliases = array();
/**
* Defines an alias.
*
* $aliasClass must be a sub-type (extend or implement) $handlingClass; otherwise you will run into trouble.
*
* Aliases can only be one level deep,
*
* i.e. aliasClass -> handlingClass is supported,
* but aliasClass -> anotherAliasClass -> handlingClass is not.
*
* @param string $handlingClass The class that should be aliased, i.e. MyDateTime
* @param string $aliasClass The class that should be used instead, i.e. DateTime
*/
public static function addAliasFor($handlingClass, $aliasClass)
{
self::$aliases[$handlingClass] = $aliasClass;
}
public static function addHandlerFor($handlingClass, $handlerInstanceOrClassName)
{
if ( ! $handlerInstanceOrClassName instanceof ObjectBasicsHandler && ! is_string($handlerInstanceOrClassName)) {
throw new \LogicException('$handler must be an instance of ObjectBasicsHandler, or a string referring to the handlers class.');
}
self::$handlers[$handlingClass] = $handlerInstanceOrClassName;
}
public static function getHandler($className)
{
if (isset(self::$aliases[$className])) {
$className = self::$aliases[$className];
}
if ( ! isset(self::$handlers[$className])) {
if (self::$defaultObjectHandler === null) {
self::$defaultObjectHandler = new IdentityHandler();
}
return self::$defaultObjectHandler;
}
if (self::$handlers[$className] instanceof ObjectBasicsHandler) {
return self::$handlers[$className];
}
if (is_string(self::$handlers[$className])) {
$handlerClass = self::$handlers[$className];
return self::$handlers[$className] = new $handlerClass();
}
throw new \LogicException(sprintf(
'Unknown handler type ("%s") for class "%s" - should never be reached.',
gettype(self::$handlers[$className]),
$className
));
}
private final function __construct() { }
} phpcollection/src/PhpCollection/EntityLikeObject.php 0000644 00000000657 14736103327 0016700 0 ustar 00 <?php
namespace PhpCollection;
/**
* Implementation for ObjectBasics for entity-like objects.
*
* Two objects are considered equal if they refer to the same instance.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
trait EntityLikeObject
{
public function hash()
{
return spl_object_hash($this);
}
public function equals(ObjectBasics $other)
{
return $this === $other;
}
} phpcollection/README.md 0000644 00000000162 14736103327 0010673 0 ustar 00 PHP Collection
==============
Learn more about it in its [documentation](http://jmsyst.com/libs/php-collection).
phpcollection/LICENSE 0000644 00000026134 14736103327 0010430 0 ustar 00 Apache License
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