diff vendor/symfony/var-dumper/Cloner/Data.php @ 0:c75dbcec494b

Initial commit from drush-created site

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/var-dumper/Cloner/Data.php	Thu Jul 05 14:24:15 2018 +0000
@@ -0,0 +1,437 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[e-mail]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\VarDumper\Cloner;
+
+use Symfony\Component\VarDumper\Caster\Caster;
+
+/**
+ * @author Nicolas Grekas <[e-mail]>
+ */
+class Data implements \ArrayAccess, \Countable, \IteratorAggregate
+{
+    private $data;
+    private $position = 0;
+    private $key = 0;
+    private $maxDepth = 20;
+    private $maxItemsPerDepth = -1;
+    private $useRefHandles = -1;
+
+    /**
+     * @param array $data An array as returned by ClonerInterface::cloneVar()
+     */
+    public function __construct(array $data)
+    {
+        $this->data = $data;
+    }
+
+    /**
+     * @return string The type of the value
+     */
+    public function getType()
+    {
+        $item = $this->data[$this->position][$this->key];
+
+        if ($item instanceof Stub && Stub::TYPE_REF === $item->type && !$item->position) {
+            $item = $item->value;
+        }
+        if (!$item instanceof Stub) {
+            return gettype($item);
+        }
+        if (Stub::TYPE_STRING === $item->type) {
+            return 'string';
+        }
+        if (Stub::TYPE_ARRAY === $item->type) {
+            return 'array';
+        }
+        if (Stub::TYPE_OBJECT === $item->type) {
+            return $item->class;
+        }
+        if (Stub::TYPE_RESOURCE === $item->type) {
+            return $item->class.' resource';
+        }
+    }
+
+    /**
+     * @param bool $recursive Whether values should be resolved recursively or not
+     *
+     * @return string|int|float|bool|array|null|Data[] A native representation of the original value
+     */
+    public function getValue($recursive = false)
+    {
+        $item = $this->data[$this->position][$this->key];
+
+        if ($item instanceof Stub && Stub::TYPE_REF === $item->type && !$item->position) {
+            $item = $item->value;
+        }
+        if (!($item = $this->getStub($item)) instanceof Stub) {
+            return $item;
+        }
+        if (Stub::TYPE_STRING === $item->type) {
+            return $item->value;
+        }
+
+        $children = $item->position ? $this->data[$item->position] : array();
+
+        foreach ($children as $k => $v) {
+            if ($recursive && !($v = $this->getStub($v)) instanceof Stub) {
+                continue;
+            }
+            $children[$k] = clone $this;
+            $children[$k]->key = $k;
+            $children[$k]->position = $item->position;
+
+            if ($recursive) {
+                if (Stub::TYPE_REF === $v->type && ($v = $this->getStub($v->value)) instanceof Stub) {
+                    $recursive = (array) $recursive;
+                    if (isset($recursive[$v->position])) {
+                        continue;
+                    }
+                    $recursive[$v->position] = true;
+                }
+                $children[$k] = $children[$k]->getValue($recursive);
+            }
+        }
+
+        return $children;
+    }
+
+    public function count()
+    {
+        return count($this->getValue());
+    }
+
+    public function getIterator()
+    {
+        if (!is_array($value = $this->getValue())) {
+            throw new \LogicException(sprintf('%s object holds non-iterable type "%s".', self::class, gettype($value)));
+        }
+
+        foreach ($value as $k => $v) {
+            yield $k => $v;
+        }
+    }
+
+    public function __get($key)
+    {
+        if (null !== $data = $this->seek($key)) {
+            $item = $this->getStub($data->data[$data->position][$data->key]);
+
+            return $item instanceof Stub || array() === $item ? $data : $item;
+        }
+    }
+
+    public function __isset($key)
+    {
+        return null !== $this->seek($key);
+    }
+
+    public function offsetExists($key)
+    {
+        return $this->__isset($key);
+    }
+
+    public function offsetGet($key)
+    {
+        return $this->__get($key);
+    }
+
+    public function offsetSet($key, $value)
+    {
+        throw new \BadMethodCallException(self::class.' objects are immutable.');
+    }
+
+    public function offsetUnset($key)
+    {
+        throw new \BadMethodCallException(self::class.' objects are immutable.');
+    }
+
+    public function __toString()
+    {
+        $value = $this->getValue();
+
+        if (!is_array($value)) {
+            return (string) $value;
+        }
+
+        return sprintf('%s (count=%d)', $this->getType(), count($value));
+    }
+
+    /**
+     * @return array The raw data structure
+     *
+     * @deprecated since version 3.3. Use array or object access instead.
+     */
+    public function getRawData()
+    {
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the array or object access instead.', __METHOD__));
+
+        return $this->data;
+    }
+
+    /**
+     * Returns a depth limited clone of $this.
+     *
+     * @param int $maxDepth The max dumped depth level
+     *
+     * @return self A clone of $this
+     */
+    public function withMaxDepth($maxDepth)
+    {
+        $data = clone $this;
+        $data->maxDepth = (int) $maxDepth;
+
+        return $data;
+    }
+
+    /**
+     * Limits the number of elements per depth level.
+     *
+     * @param int $maxItemsPerDepth The max number of items dumped per depth level
+     *
+     * @return self A clone of $this
+     */
+    public function withMaxItemsPerDepth($maxItemsPerDepth)
+    {
+        $data = clone $this;
+        $data->maxItemsPerDepth = (int) $maxItemsPerDepth;
+
+        return $data;
+    }
+
+    /**
+     * Enables/disables objects' identifiers tracking.
+     *
+     * @param bool $useRefHandles False to hide global ref. handles
+     *
+     * @return self A clone of $this
+     */
+    public function withRefHandles($useRefHandles)
+    {
+        $data = clone $this;
+        $data->useRefHandles = $useRefHandles ? -1 : 0;
+
+        return $data;
+    }
+
+    /**
+     * Seeks to a specific key in nested data structures.
+     *
+     * @param string|int $key The key to seek to
+     *
+     * @return self|null A clone of $this or null if the key is not set
+     */
+    public function seek($key)
+    {
+        $item = $this->data[$this->position][$this->key];
+
+        if ($item instanceof Stub && Stub::TYPE_REF === $item->type && !$item->position) {
+            $item = $item->value;
+        }
+        if (!($item = $this->getStub($item)) instanceof Stub || !$item->position) {
+            return;
+        }
+        $keys = array($key);
+
+        switch ($item->type) {
+            case Stub::TYPE_OBJECT:
+                $keys[] = Caster::PREFIX_DYNAMIC.$key;
+                $keys[] = Caster::PREFIX_PROTECTED.$key;
+                $keys[] = Caster::PREFIX_VIRTUAL.$key;
+                $keys[] = "\0$item->class\0$key";
+                // no break
+            case Stub::TYPE_ARRAY:
+            case Stub::TYPE_RESOURCE:
+                break;
+            default:
+                return;
+        }
+
+        $data = null;
+        $children = $this->data[$item->position];
+
+        foreach ($keys as $key) {
+            if (isset($children[$key]) || array_key_exists($key, $children)) {
+                $data = clone $this;
+                $data->key = $key;
+                $data->position = $item->position;
+                break;
+            }
+        }
+
+        return $data;
+    }
+
+    /**
+     * Dumps data with a DumperInterface dumper.
+     */
+    public function dump(DumperInterface $dumper)
+    {
+        $refs = array(0);
+        $this->dumpItem($dumper, new Cursor(), $refs, $this->data[$this->position][$this->key]);
+    }
+
+    /**
+     * Depth-first dumping of items.
+     *
+     * @param DumperInterface $dumper The dumper being used for dumping
+     * @param Cursor          $cursor A cursor used for tracking dumper state position
+     * @param array           &$refs  A map of all references discovered while dumping
+     * @param mixed           $item   A Stub object or the original value being dumped
+     */
+    private function dumpItem($dumper, $cursor, &$refs, $item)
+    {
+        $cursor->refIndex = 0;
+        $cursor->softRefTo = $cursor->softRefHandle = $cursor->softRefCount = 0;
+        $cursor->hardRefTo = $cursor->hardRefHandle = $cursor->hardRefCount = 0;
+        $firstSeen = true;
+
+        if (!$item instanceof Stub) {
+            $cursor->attr = array();
+            $type = \gettype($item);
+            if ($item && 'array' === $type) {
+                $item = $this->getStub($item);
+            }
+        } elseif (Stub::TYPE_REF === $item->type) {
+            if ($item->handle) {
+                if (!isset($refs[$r = $item->handle - (PHP_INT_MAX >> 1)])) {
+                    $cursor->refIndex = $refs[$r] = $cursor->refIndex ?: ++$refs[0];
+                } else {
+                    $firstSeen = false;
+                }
+                $cursor->hardRefTo = $refs[$r];
+                $cursor->hardRefHandle = $this->useRefHandles & $item->handle;
+                $cursor->hardRefCount = $item->refCount;
+            }
+            $cursor->attr = $item->attr;
+            $type = $item->class ?: gettype($item->value);
+            $item = $this->getStub($item->value);
+        }
+        if ($item instanceof Stub) {
+            if ($item->refCount) {
+                if (!isset($refs[$r = $item->handle])) {
+                    $cursor->refIndex = $refs[$r] = $cursor->refIndex ?: ++$refs[0];
+                } else {
+                    $firstSeen = false;
+                }
+                $cursor->softRefTo = $refs[$r];
+            }
+            $cursor->softRefHandle = $this->useRefHandles & $item->handle;
+            $cursor->softRefCount = $item->refCount;
+            $cursor->attr = $item->attr;
+            $cut = $item->cut;
+
+            if ($item->position && $firstSeen) {
+                $children = $this->data[$item->position];
+
+                if ($cursor->stop) {
+                    if ($cut >= 0) {
+                        $cut += count($children);
+                    }
+                    $children = array();
+                }
+            } else {
+                $children = array();
+            }
+            switch ($item->type) {
+                case Stub::TYPE_STRING:
+                    $dumper->dumpString($cursor, $item->value, Stub::STRING_BINARY === $item->class, $cut);
+                    break;
+
+                case Stub::TYPE_ARRAY:
+                    $item = clone $item;
+                    $item->type = $item->class;
+                    $item->class = $item->value;
+                    // no break
+                case Stub::TYPE_OBJECT:
+                case Stub::TYPE_RESOURCE:
+                    $withChildren = $children && $cursor->depth !== $this->maxDepth && $this->maxItemsPerDepth;
+                    $dumper->enterHash($cursor, $item->type, $item->class, $withChildren);
+                    if ($withChildren) {
+                        if ($cursor->skipChildren) {
+                            $withChildren = false;
+                            $cut = -1;
+                        } else {
+                            $cut = $this->dumpChildren($dumper, $cursor, $refs, $children, $cut, $item->type, null !== $item->class);
+                        }
+                    } elseif ($children && 0 <= $cut) {
+                        $cut += count($children);
+                    }
+                    $cursor->skipChildren = false;
+                    $dumper->leaveHash($cursor, $item->type, $item->class, $withChildren, $cut);
+                    break;
+
+                default:
+                    throw new \RuntimeException(sprintf('Unexpected Stub type: %s', $item->type));
+            }
+        } elseif ('array' === $type) {
+            $dumper->enterHash($cursor, Cursor::HASH_INDEXED, 0, false);
+            $dumper->leaveHash($cursor, Cursor::HASH_INDEXED, 0, false, 0);
+        } elseif ('string' === $type) {
+            $dumper->dumpString($cursor, $item, false, 0);
+        } else {
+            $dumper->dumpScalar($cursor, $type, $item);
+        }
+    }
+
+    /**
+     * Dumps children of hash structures.
+     *
+     * @param DumperInterface $dumper
+     * @param Cursor          $parentCursor The cursor of the parent hash
+     * @param array           &$refs        A map of all references discovered while dumping
+     * @param array           $children     The children to dump
+     * @param int             $hashCut      The number of items removed from the original hash
+     * @param string          $hashType     A Cursor::HASH_* const
+     * @param bool            $dumpKeys     Whether keys should be dumped or not
+     *
+     * @return int The final number of removed items
+     */
+    private function dumpChildren($dumper, $parentCursor, &$refs, $children, $hashCut, $hashType, $dumpKeys)
+    {
+        $cursor = clone $parentCursor;
+        ++$cursor->depth;
+        $cursor->hashType = $hashType;
+        $cursor->hashIndex = 0;
+        $cursor->hashLength = count($children);
+        $cursor->hashCut = $hashCut;
+        foreach ($children as $key => $child) {
+            $cursor->hashKeyIsBinary = isset($key[0]) && !preg_match('//u', $key);
+            $cursor->hashKey = $dumpKeys ? $key : null;
+            $this->dumpItem($dumper, $cursor, $refs, $child);
+            if (++$cursor->hashIndex === $this->maxItemsPerDepth || $cursor->stop) {
+                $parentCursor->stop = true;
+
+                return $hashCut >= 0 ? $hashCut + $cursor->hashLength - $cursor->hashIndex : $hashCut;
+            }
+        }
+
+        return $hashCut;
+    }
+
+    private function getStub($item)
+    {
+        if (!$item || !\is_array($item)) {
+            return $item;
+        }
+
+        $stub = new Stub();
+        $stub->type = Stub::TYPE_ARRAY;
+        foreach ($item as $stub->class => $stub->position) {
+        }
+        if (isset($item[0])) {
+            $stub->cut = $item[0];
+        }
+        $stub->value = $stub->cut + ($stub->position ? \count($this->data[$stub->position]) : 0);
+
+        return $stub;
+    }
+}