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Diffstat (limited to 'ext/spl/internal/multipleiterator.inc')
| -rw-r--r-- | ext/spl/internal/multipleiterator.inc | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/ext/spl/internal/multipleiterator.inc b/ext/spl/internal/multipleiterator.inc deleted file mode 100644 index 12df011ecc..0000000000 --- a/ext/spl/internal/multipleiterator.inc +++ /dev/null @@ -1,223 +0,0 @@ -<?php -/** @file multipleiterator.inc - * @ingroup SPL - * @brief class MultipleIterator - * @author Johannes Schlueter - * @author Marcus Boerger - * @date 2008 - 2009 - * - * SPL - Standard PHP Library - */ - -/** @ingroup SPL - * @brief Iterator that iterates over several iterators one after the other - * @author Johannes Schlueter - * @author Marcus Boerger - * @version 1.0 - * @since PHP 5.3 - */ -class MultipleIterator implements Iterator -{ - /** Inner Iterators */ - private $iterators; - - /** Flags: const MIT_* */ - private $flags; - - /** do not require all sub iterators to be valid in iteration */ - const MIT_NEED_ANY = 0; - - /** require all sub iterators to be valid in iteration */ - const MIT_NEED_ALL = 1; - - /** keys are created from sub iterators position */ - const MIT_KEYS_NUMERIC = 0; - - /** keys are created from sub iterators associated infromation */ - const MIT_KEYS_ASSOC = 2; - - /** Construct a new empty MultipleIterator - * @param flags MIT_* flags - */ - public function __construct($flags = self::MIT_NEED_ALL|self::MIT_KEYS_NUMERIC) - { - $this->iterators = new SplObjectStorage(); - $this->flags = $flags; - } - - /** @return current flags MIT_* */ - public function getFlags() - { - return $this->flags; - } - - /** @param $flags new flags. */ - public function setFlags($flags) - { - $this->flags = $flags; - } - - /** @param $iter new Iterator to attach. - * @param $inf associative info forIteraotr, must be NULL, integer or string - * - * @throws IllegalValueException if a inf is none of NULL, integer or string - * @throws IllegalValueException if a inf is already an associated info - */ - public function attachIterator(Iterator $iter, $inf = NULL) - { - - if (!is_null($inf)) - { - if (!is_int($inf) && !is_string($inf)) - { - throw new IllegalValueException('Inf must be NULL, integer or string'); - } - foreach($this->iterators as $iter) - { - if ($inf == $this->iterators->getInfo()) - { - throw new IllegalValueException('Key duplication error'); - } - } - } - $this->iterators->attach($iter, $inf); - } - - /** @param $iter attached Iterator that should be detached. */ - public function detachIterator(Iterator $iter) - { - $this->iterators->detach($iter); - } - - /** @param $iter Iterator to check - * @return whether $iter is attached or not - */ - public function containsIterator(Iterator $iter) - { - return $this->iterator->contains($iter); - } - - /** @return number of attached Iterator instances. */ - public function countIterators() - { - return $this->iterators->count(); - } - - /** Rewind all attached Iterator instances. */ - public function rewind() - { - foreach($this->iterators as $iter) - { - $iter->rewind(); - } - } - - /** - * @return whether all or one sub iterator is valid depending on flags. - * In mode MIT_NEED_ALL we expect all sub iterators to be valid and - * return flase on the first non valid one. If that flag is not set we - * return true on the first valid sub iterator found. If no Iterator - * is attached, we always return false. - */ - public function valid() - { - if (!sizeof($this->iterators)) { - return false; - } - // The following code is an optimized version that executes as few - // valid() calls as necessary and that only checks the flags once. - $expect = $this->flags & self::MIT_NEED_ALL ? true : false; - foreach($this->iterators as $iter) - { - if ($expect != $iter->valid()) - { - return !$expect; - } - } - return $expect; - } - - /** Move all attached Iterator instances forward. That is invoke - * their next() method regardless of their state. - */ - public function next() - { - foreach($this->iterators as $iter) - { - $iter->next(); - } - } - - /** @return false if no sub Iterator is attached and an array of - * all registered Iterator instances current() result. - * @throws RuntimeException if mode MIT_NEED_ALL is set and at least one - * attached Iterator is not valid(). - * @throws IllegalValueException if a key is NULL and MIT_KEYS_ASSOC is set. - */ - public function current() - { - if (!sizeof($this->iterators)) - { - return false; - } - $retval = array(); - foreach($this->iterators as $iter) - { - if ($iter->valid()) - { - if ($this->flags & self::MIT_KEYS_ASSOC) - { - $key = $this->iterators->getInfo(); - if (is_null($key)) - { - throw new IllegalValueException('Sub-Iterator is associated with NULL'); - } - $retval[$key] = $iter->current(); - } - else - { - $retval[] = $iter->current(); - } - } - else if ($this->flags & self::MIT_NEED_ALL) - { - throw new RuntimeException('Called current() with non valid sub iterator'); - } - else - { - $retval[] = NULL; - } - } - return $retval; - } - - /** @return false if no sub Iterator is attached and an array of - * all registered Iterator instances key() result. - * @throws LogicException if mode MIT_NEED_ALL is set and at least one - * attached Iterator is not valid(). - */ - public function key() - { - if (!sizeof($this->iterators)) - { - return false; - } - $retval = array(); - foreach($this->iterators as $iter) - { - if ($iter->valid()) - { - $retval[] = $iter->key(); - } - else if ($this->flags & self::MIT_NEED_ALL) - { - throw new LogicException('Called key() with non valid sub iterator'); - } - else - { - $retval[] = NULL; - } - } - return $retval; - } -} |