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<?php
/*
* This file is part of Twig.
*
* (c) Fabien Potencier
* (c) Armin Ronacher
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Twig\Node;
use Twig\Attribute\YieldReady;
use Twig\Compiler;
use Twig\Source;
/**
* Represents a node in the AST.
*
* @author Fabien Potencier <[email protected]>
*/
#[YieldReady]
class Node implements \Countable, \IteratorAggregate
{
/**
* @var array<string|int, Node>
*/
protected $nodes;
protected $attributes;
protected $lineno;
protected $tag;
private $sourceContext;
/** @var array<string, NameDeprecation> */
private $nodeNameDeprecations = [];
/** @var array<string, NameDeprecation> */
private $attributeNameDeprecations = [];
/**
* @param array<string|int, Node> $nodes An array of named nodes
* @param array $attributes An array of attributes (should not be nodes)
* @param int $lineno The line number
*/
public function __construct(array $nodes = [], array $attributes = [], int $lineno = 0)
{
foreach ($nodes as $name => $node) {
if (!$node instanceof self) {
throw new \InvalidArgumentException(\sprintf('Using "%s" for the value of node "%s" of "%s" is not supported. You must pass a \Twig\Node\Node instance.', \is_object($node) ? $node::class : (null === $node ? 'null' : \gettype($node)), $name, static::class));
}
}
$this->nodes = $nodes;
$this->attributes = $attributes;
$this->lineno = $lineno;
if (\func_num_args() > 3) {
trigger_deprecation('twig/twig', '3.12', \sprintf('The "tag" constructor argument of the "%s" class is deprecated and ignored (check which TokenParser class set it to "%s"), the tag is now automatically set by the Parser when needed.', static::class, func_get_arg(3) ?: 'null'));
}
}
public function __toString()
{
$repr = static::class;
if ($this->tag) {
$repr .= \sprintf("\n tag: %s", $this->tag);
}
$attributes = [];
foreach ($this->attributes as $name => $value) {
if (\is_callable($value)) {
$v = '\Closure';
} elseif ($value instanceof \Stringable) {
$v = (string) $value;
} else {
$v = str_replace("\n", '', var_export($value, true));
}
$attributes[] = \sprintf('%s: %s', $name, $v);
}
if ($attributes) {
$repr .= \sprintf("\n attributes:\n %s", implode("\n ", $attributes));
}
if (\count($this->nodes)) {
$repr .= "\n nodes:";
foreach ($this->nodes as $name => $node) {
$len = \strlen($name) + 6;
$noderepr = [];
foreach (explode("\n", (string) $node) as $line) {
$noderepr[] = str_repeat(' ', $len).$line;
}
$repr .= \sprintf("\n %s: %s", $name, ltrim(implode("\n", $noderepr)));
}
}
return $repr;
}
/**
* @return void
*/
public function compile(Compiler $compiler)
{
foreach ($this->nodes as $node) {
$compiler->subcompile($node);
}
}
public function getTemplateLine(): int
{
return $this->lineno;
}
public function getNodeTag(): ?string
{
return $this->tag;
}
/**
* @internal
*/
public function setNodeTag(string $tag): void
{
if ($this->tag) {
throw new \LogicException('The tag of a node can only be set once.');
}
$this->tag = $tag;
}
public function hasAttribute(string $name): bool
{
return \array_key_exists($name, $this->attributes);
}
public function getAttribute(string $name)
{
if (!\array_key_exists($name, $this->attributes)) {
throw new \LogicException(\sprintf('Attribute "%s" does not exist for Node "%s".', $name, static::class));
}
$triggerDeprecation = \func_num_args() > 1 ? func_get_arg(1) : true;
if ($triggerDeprecation && isset($this->attributeNameDeprecations[$name])) {
$dep = $this->attributeNameDeprecations[$name];
if ($dep->getNewName()) {
trigger_deprecation($dep->getPackage(), $dep->getVersion(), 'Getting attribute "%s" on a "%s" class is deprecated, get the "%s" attribute instead.', $name, static::class, $dep->getNewName());
} else {
trigger_deprecation($dep->getPackage(), $dep->getVersion(), 'Getting attribute "%s" on a "%s" class is deprecated.', $name, static::class);
}
}
return $this->attributes[$name];
}
public function setAttribute(string $name, $value): void
{
$triggerDeprecation = \func_num_args() > 2 ? func_get_arg(2) : true;
if ($triggerDeprecation && isset($this->attributeNameDeprecations[$name])) {
$dep = $this->attributeNameDeprecations[$name];
if ($dep->getNewName()) {
trigger_deprecation($dep->getPackage(), $dep->getVersion(), 'Setting attribute "%s" on a "%s" class is deprecated, set the "%s" attribute instead.', $name, static::class, $dep->getNewName());
} else {
trigger_deprecation($dep->getPackage(), $dep->getVersion(), 'Setting attribute "%s" on a "%s" class is deprecated.', $name, static::class);
}
}
$this->attributes[$name] = $value;
}
public function deprecateAttribute(string $name, NameDeprecation $dep): void
{
$this->attributeNameDeprecations[$name] = $dep;
}
public function removeAttribute(string $name): void
{
unset($this->attributes[$name]);
}
/**
* @param string|int $name
*/
public function hasNode(string $name): bool
{
return isset($this->nodes[$name]);
}
/**
* @param string|int $name
*/
public function getNode(string $name): self
{
if (!isset($this->nodes[$name])) {
throw new \LogicException(\sprintf('Node "%s" does not exist for Node "%s".', $name, static::class));
}
$triggerDeprecation = \func_num_args() > 1 ? func_get_arg(1) : true;
if ($triggerDeprecation && isset($this->nodeNameDeprecations[$name])) {
$dep = $this->nodeNameDeprecations[$name];
if ($dep->getNewName()) {
trigger_deprecation($dep->getPackage(), $dep->getVersion(), 'Getting node "%s" on a "%s" class is deprecated, get the "%s" node instead.', $name, static::class, $dep->getNewName());
} else {
trigger_deprecation($dep->getPackage(), $dep->getVersion(), 'Getting node "%s" on a "%s" class is deprecated.', $name, static::class);
}
}
return $this->nodes[$name];
}
/**
* @param string|int $name
*/
public function setNode(string $name, self $node): void
{
$triggerDeprecation = \func_num_args() > 2 ? func_get_arg(2) : true;
if ($triggerDeprecation && isset($this->nodeNameDeprecations[$name])) {
$dep = $this->nodeNameDeprecations[$name];
if ($dep->getNewName()) {
trigger_deprecation($dep->getPackage(), $dep->getVersion(), 'Setting node "%s" on a "%s" class is deprecated, set the "%s" node instead.', $name, static::class, $dep->getNewName());
} else {
trigger_deprecation($dep->getPackage(), $dep->getVersion(), 'Setting node "%s" on a "%s" class is deprecated.', $name, static::class);
}
}
if (null !== $this->sourceContext) {
$node->setSourceContext($this->sourceContext);
}
$this->nodes[$name] = $node;
}
/**
* @param string|int $name
*/
public function removeNode(string $name): void
{
unset($this->nodes[$name]);
}
/**
* @param string|int $name
*/
public function deprecateNode(string $name, NameDeprecation $dep): void
{
$this->nodeNameDeprecations[$name] = $dep;
}
/**
* @return int
*/
#[\ReturnTypeWillChange]
public function count()
{
return \count($this->nodes);
}
public function getIterator(): \Traversable
{
return new \ArrayIterator($this->nodes);
}
public function getTemplateName(): ?string
{
return $this->sourceContext ? $this->sourceContext->getName() : null;
}
public function setSourceContext(Source $source): void
{
$this->sourceContext = $source;
foreach ($this->nodes as $node) {
$node->setSourceContext($source);
}
}
public function getSourceContext(): ?Source
{
return $this->sourceContext;
}
}