<?php
namespace MailPoetVendor\Twig;
if (!defined('ABSPATH')) exit;
use MailPoetVendor\Twig\Error\SyntaxError;
use MailPoetVendor\Twig\Node\Expression\AbstractExpression;
use MailPoetVendor\Twig\Node\Expression\ArrayExpression;
use MailPoetVendor\Twig\Node\Expression\ArrowFunctionExpression;
use MailPoetVendor\Twig\Node\Expression\AssignNameExpression;
use MailPoetVendor\Twig\Node\Expression\Binary\ConcatBinary;
use MailPoetVendor\Twig\Node\Expression\BlockReferenceExpression;
use MailPoetVendor\Twig\Node\Expression\ConditionalExpression;
use MailPoetVendor\Twig\Node\Expression\ConstantExpression;
use MailPoetVendor\Twig\Node\Expression\GetAttrExpression;
use MailPoetVendor\Twig\Node\Expression\MethodCallExpression;
use MailPoetVendor\Twig\Node\Expression\NameExpression;
use MailPoetVendor\Twig\Node\Expression\ParentExpression;
use MailPoetVendor\Twig\Node\Expression\TestExpression;
use MailPoetVendor\Twig\Node\Expression\Unary\NegUnary;
use MailPoetVendor\Twig\Node\Expression\Unary\NotUnary;
use MailPoetVendor\Twig\Node\Expression\Unary\PosUnary;
use MailPoetVendor\Twig\Node\Node;
class ExpressionParser
{
 public const OPERATOR_LEFT = 1;
 public const OPERATOR_RIGHT = 2;
 private $parser;
 private $env;
 private $unaryOperators;
 private $binaryOperators;
 public function __construct(Parser $parser, Environment $env)
 {
 $this->parser = $parser;
 $this->env = $env;
 $this->unaryOperators = $env->getUnaryOperators();
 $this->binaryOperators = $env->getBinaryOperators();
 }
 public function parseExpression($precedence = 0, $allowArrow = \false)
 {
 if ($allowArrow && ($arrow = $this->parseArrow())) {
 return $arrow;
 }
 $expr = $this->getPrimary();
 $token = $this->parser->getCurrentToken();
 while ($this->isBinary($token) && $this->binaryOperators[$token->getValue()]['precedence'] >= $precedence) {
 $op = $this->binaryOperators[$token->getValue()];
 $this->parser->getStream()->next();
 if ('is not' === $token->getValue()) {
 $expr = $this->parseNotTestExpression($expr);
 } elseif ('is' === $token->getValue()) {
 $expr = $this->parseTestExpression($expr);
 } elseif (isset($op['callable'])) {
 $expr = $op['callable']($this->parser, $expr);
 } else {
 $expr1 = $this->parseExpression(self::OPERATOR_LEFT === $op['associativity'] ? $op['precedence'] + 1 : $op['precedence']);
 $class = $op['class'];
 $expr = new $class($expr, $expr1, $token->getLine());
 }
 $token = $this->parser->getCurrentToken();
 }
 if (0 === $precedence) {
 return $this->parseConditionalExpression($expr);
 }
 return $expr;
 }
 private function parseArrow()
 {
 $stream = $this->parser->getStream();
 // short array syntax (one argument, no parentheses)?
 if ($stream->look(1)->test(
 12
 )) {
 $line = $stream->getCurrent()->getLine();
 $token = $stream->expect(
 5
 );
 $names = [new AssignNameExpression($token->getValue(), $token->getLine())];
 $stream->expect(
 12
 );
 return new ArrowFunctionExpression($this->parseExpression(0), new Node($names), $line);
 }
 // first, determine if we are parsing an arrow function by finding => (long form)
 $i = 0;
 if (!$stream->look($i)->test(
 9,
 '('
 )) {
 return null;
 }
 ++$i;
 while (\true) {
 // variable name
 ++$i;
 if (!$stream->look($i)->test(
 9,
 ','
 )) {
 break;
 }
 ++$i;
 }
 if (!$stream->look($i)->test(
 9,
 ')'
 )) {
 return null;
 }
 ++$i;
 if (!$stream->look($i)->test(
 12
 )) {
 return null;
 }
 // yes, let's parse it properly
 $token = $stream->expect(
 9,
 '('
 );
 $line = $token->getLine();
 $names = [];
 while (\true) {
 $token = $stream->expect(
 5
 );
 $names[] = new AssignNameExpression($token->getValue(), $token->getLine());
 if (!$stream->nextIf(
 9,
 ','
 )) {
 break;
 }
 }
 $stream->expect(
 9,
 ')'
 );
 $stream->expect(
 12
 );
 return new ArrowFunctionExpression($this->parseExpression(0), new Node($names), $line);
 }
 private function getPrimary() : AbstractExpression
 {
 $token = $this->parser->getCurrentToken();
 if ($this->isUnary($token)) {
 $operator = $this->unaryOperators[$token->getValue()];
 $this->parser->getStream()->next();
 $expr = $this->parseExpression($operator['precedence']);
 $class = $operator['class'];
 return $this->parsePostfixExpression(new $class($expr, $token->getLine()));
 } elseif ($token->test(
 9,
 '('
 )) {
 $this->parser->getStream()->next();
 $expr = $this->parseExpression();
 $this->parser->getStream()->expect(
 9,
 ')',
 'An opened parenthesis is not properly closed'
 );
 return $this->parsePostfixExpression($expr);
 }
 return $this->parsePrimaryExpression();
 }
 private function parseConditionalExpression($expr) : AbstractExpression
 {
 while ($this->parser->getStream()->nextIf(
 9,
 '?'
 )) {
 if (!$this->parser->getStream()->nextIf(
 9,
 ':'
 )) {
 $expr2 = $this->parseExpression();
 if ($this->parser->getStream()->nextIf(
 9,
 ':'
 )) {
 $expr3 = $this->parseExpression();
 } else {
 $expr3 = new ConstantExpression('', $this->parser->getCurrentToken()->getLine());
 }
 } else {
 $expr2 = $expr;
 $expr3 = $this->parseExpression();
 }
 $expr = new ConditionalExpression($expr, $expr2, $expr3, $this->parser->getCurrentToken()->getLine());
 }
 return $expr;
 }
 private function isUnary(Token $token) : bool
 {
 return $token->test(
 8
 ) && isset($this->unaryOperators[$token->getValue()]);
 }
 private function isBinary(Token $token) : bool
 {
 return $token->test(
 8
 ) && isset($this->binaryOperators[$token->getValue()]);
 }
 public function parsePrimaryExpression()
 {
 $token = $this->parser->getCurrentToken();
 switch ($token->getType()) {
 case 5:
 $this->parser->getStream()->next();
 switch ($token->getValue()) {
 case 'true':
 case 'TRUE':
 $node = new ConstantExpression(\true, $token->getLine());
 break;
 case 'false':
 case 'FALSE':
 $node = new ConstantExpression(\false, $token->getLine());
 break;
 case 'none':
 case 'NONE':
 case 'null':
 case 'NULL':
 $node = new ConstantExpression(null, $token->getLine());
 break;
 default:
 if ('(' === $this->parser->getCurrentToken()->getValue()) {
 $node = $this->getFunctionNode($token->getValue(), $token->getLine());
 } else {
 $node = new NameExpression($token->getValue(), $token->getLine());
 }
 }
 break;
 case 6:
 $this->parser->getStream()->next();
 $node = new ConstantExpression($token->getValue(), $token->getLine());
 break;
 case 7:
 case 10:
 $node = $this->parseStringExpression();
 break;
 case 8:
 if (\preg_match(Lexer::REGEX_NAME, $token->getValue(), $matches) && $matches[0] == $token->getValue()) {
 // in this context, string operators are variable names
 $this->parser->getStream()->next();
 $node = new NameExpression($token->getValue(), $token->getLine());
 break;
 }
 if (isset($this->unaryOperators[$token->getValue()])) {
 $class = $this->unaryOperators[$token->getValue()]['class'];
 if (!\in_array($class, [NegUnary::class, PosUnary::class])) {
 throw new SyntaxError(\sprintf('Unexpected unary operator "%s".', $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext());
 }
 $this->parser->getStream()->next();
 $expr = $this->parsePrimaryExpression();
 $node = new $class($expr, $token->getLine());
 break;
 }
 // no break
 default:
 if ($token->test(
 9,
 '['
 )) {
 $node = $this->parseArrayExpression();
 } elseif ($token->test(
 9,
 '{'
 )) {
 $node = $this->parseHashExpression();
 } elseif ($token->test(
 8,
 '='
 ) && ('==' === $this->parser->getStream()->look(-1)->getValue() || '!=' === $this->parser->getStream()->look(-1)->getValue())) {
 throw new SyntaxError(\sprintf('Unexpected operator of value "%s". Did you try to use "===" or "!==" for strict comparison? Use "is same as(value)" instead.', $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext());
 } else {
 throw new SyntaxError(\sprintf('Unexpected token "%s" of value "%s".', Token::typeToEnglish($token->getType()), $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext());
 }
 }
 return $this->parsePostfixExpression($node);
 }
 public function parseStringExpression()
 {
 $stream = $this->parser->getStream();
 $nodes = [];
 // a string cannot be followed by another string in a single expression
 $nextCanBeString = \true;
 while (\true) {
 if ($nextCanBeString && ($token = $stream->nextIf(
 7
 ))) {
 $nodes[] = new ConstantExpression($token->getValue(), $token->getLine());
 $nextCanBeString = \false;
 } elseif ($stream->nextIf(
 10
 )) {
 $nodes[] = $this->parseExpression();
 $stream->expect(
 11
 );
 $nextCanBeString = \true;
 } else {
 break;
 }
 }
 $expr = \array_shift($nodes);
 foreach ($nodes as $node) {
 $expr = new ConcatBinary($expr, $node, $node->getTemplateLine());
 }
 return $expr;
 }
 public function parseArrayExpression()
 {
 $stream = $this->parser->getStream();
 $stream->expect(
 9,
 '[',
 'An array element was expected'
 );
 $node = new ArrayExpression([], $stream->getCurrent()->getLine());
 $first = \true;
 while (!$stream->test(
 9,
 ']'
 )) {
 if (!$first) {
 $stream->expect(
 9,
 ',',
 'An array element must be followed by a comma'
 );
 // trailing ,?
 if ($stream->test(
 9,
 ']'
 )) {
 break;
 }
 }
 $first = \false;
 $node->addElement($this->parseExpression());
 }
 $stream->expect(
 9,
 ']',
 'An opened array is not properly closed'
 );
 return $node;
 }
 public function parseHashExpression()
 {
 $stream = $this->parser->getStream();
 $stream->expect(
 9,
 '{',
 'A hash element was expected'
 );
 $node = new ArrayExpression([], $stream->getCurrent()->getLine());
 $first = \true;
 while (!$stream->test(
 9,
 '}'
 )) {
 if (!$first) {
 $stream->expect(
 9,
 ',',
 'A hash value must be followed by a comma'
 );
 // trailing ,?
 if ($stream->test(
 9,
 '}'
 )) {
 break;
 }
 }
 $first = \false;
 // a hash key can be:
 //
 // * a number -- 12
 // * a string -- 'a'
 // * a name, which is equivalent to a string -- a
 // * an expression, which must be enclosed in parentheses -- (1 + 2)
 if ($token = $stream->nextIf(
 5
 )) {
 $key = new ConstantExpression($token->getValue(), $token->getLine());
 // {a} is a shortcut for {a:a}
 if ($stream->test(Token::PUNCTUATION_TYPE, [',', '}'])) {
 $value = new NameExpression($key->getAttribute('value'), $key->getTemplateLine());
 $node->addElement($value, $key);
 continue;
 }
 } elseif (($token = $stream->nextIf(
 7
 )) || ($token = $stream->nextIf(
 6
 ))) {
 $key = new ConstantExpression($token->getValue(), $token->getLine());
 } elseif ($stream->test(
 9,
 '('
 )) {
 $key = $this->parseExpression();
 } else {
 $current = $stream->getCurrent();
 throw new SyntaxError(\sprintf('A hash key must be a quoted string, a number, a name, or an expression enclosed in parentheses (unexpected token "%s" of value "%s".', Token::typeToEnglish($current->getType()), $current->getValue()), $current->getLine(), $stream->getSourceContext());
 }
 $stream->expect(
 9,
 ':',
 'A hash key must be followed by a colon (:)'
 );
 $value = $this->parseExpression();
 $node->addElement($value, $key);
 }
 $stream->expect(
 9,
 '}',
 'An opened hash is not properly closed'
 );
 return $node;
 }
 public function parsePostfixExpression($node)
 {
 while (\true) {
 $token = $this->parser->getCurrentToken();
 if (9 == $token->getType()) {
 if ('.' == $token->getValue() || '[' == $token->getValue()) {
 $node = $this->parseSubscriptExpression($node);
 } elseif ('|' == $token->getValue()) {
 $node = $this->parseFilterExpression($node);
 } else {
 break;
 }
 } else {
 break;
 }
 }
 return $node;
 }
 public function getFunctionNode($name, $line)
 {
 switch ($name) {
 case 'parent':
 $this->parseArguments();
 if (!\count($this->parser->getBlockStack())) {
 throw new SyntaxError('Calling "parent" outside a block is forbidden.', $line, $this->parser->getStream()->getSourceContext());
 }
 if (!$this->parser->getParent() && !$this->parser->hasTraits()) {
 throw new SyntaxError('Calling "parent" on a template that does not extend nor "use" another template is forbidden.', $line, $this->parser->getStream()->getSourceContext());
 }
 return new ParentExpression($this->parser->peekBlockStack(), $line);
 case 'block':
 $args = $this->parseArguments();
 if (\count($args) < 1) {
 throw new SyntaxError('The "block" function takes one argument (the block name).', $line, $this->parser->getStream()->getSourceContext());
 }
 return new BlockReferenceExpression($args->getNode(0), \count($args) > 1 ? $args->getNode(1) : null, $line);
 case 'attribute':
 $args = $this->parseArguments();
 if (\count($args) < 2) {
 throw new SyntaxError('The "attribute" function takes at least two arguments (the variable and the attributes).', $line, $this->parser->getStream()->getSourceContext());
 }
 return new GetAttrExpression($args->getNode(0), $args->getNode(1), \count($args) > 2 ? $args->getNode(2) : null, Template::ANY_CALL, $line);
 default:
 if (null !== ($alias = $this->parser->getImportedSymbol('function', $name))) {
 $arguments = new ArrayExpression([], $line);
 foreach ($this->parseArguments() as $n) {
 $arguments->addElement($n);
 }
 $node = new MethodCallExpression($alias['node'], $alias['name'], $arguments, $line);
 $node->setAttribute('safe', \true);
 return $node;
 }
 $args = $this->parseArguments(\true);
 $class = $this->getFunctionNodeClass($name, $line);
 return new $class($name, $args, $line);
 }
 }
 public function parseSubscriptExpression($node)
 {
 $stream = $this->parser->getStream();
 $token = $stream->next();
 $lineno = $token->getLine();
 $arguments = new ArrayExpression([], $lineno);
 $type = Template::ANY_CALL;
 if ('.' == $token->getValue()) {
 $token = $stream->next();
 if (5 == $token->getType() || 6 == $token->getType() || 8 == $token->getType() && \preg_match(Lexer::REGEX_NAME, $token->getValue())) {
 $arg = new ConstantExpression($token->getValue(), $lineno);
 if ($stream->test(
 9,
 '('
 )) {
 $type = Template::METHOD_CALL;
 foreach ($this->parseArguments() as $n) {
 $arguments->addElement($n);
 }
 }
 } else {
 throw new SyntaxError(\sprintf('Expected name or number, got value "%s" of type %s.', $token->getValue(), Token::typeToEnglish($token->getType())), $lineno, $stream->getSourceContext());
 }
 if ($node instanceof NameExpression && null !== $this->parser->getImportedSymbol('template', $node->getAttribute('name'))) {
 if (!$arg instanceof ConstantExpression) {
 throw new SyntaxError(\sprintf('Dynamic macro names are not supported (called on "%s").', $node->getAttribute('name')), $token->getLine(), $stream->getSourceContext());
 }
 $name = $arg->getAttribute('value');
 $node = new MethodCallExpression($node, 'macro_' . $name, $arguments, $lineno);
 $node->setAttribute('safe', \true);
 return $node;
 }
 } else {
 $type = Template::ARRAY_CALL;
 // slice?
 $slice = \false;
 if ($stream->test(
 9,
 ':'
 )) {
 $slice = \true;
 $arg = new ConstantExpression(0, $token->getLine());
 } else {
 $arg = $this->parseExpression();
 }
 if ($stream->nextIf(
 9,
 ':'
 )) {
 $slice = \true;
 }
 if ($slice) {
 if ($stream->test(
 9,
 ']'
 )) {
 $length = new ConstantExpression(null, $token->getLine());
 } else {
 $length = $this->parseExpression();
 }
 $class = $this->getFilterNodeClass('slice', $token->getLine());
 $arguments = new Node([$arg, $length]);
 $filter = new $class($node, new ConstantExpression('slice', $token->getLine()), $arguments, $token->getLine());
 $stream->expect(
 9,
 ']'
 );
 return $filter;
 }
 $stream->expect(
 9,
 ']'
 );
 }
 return new GetAttrExpression($node, $arg, $arguments, $type, $lineno);
 }
 public function parseFilterExpression($node)
 {
 $this->parser->getStream()->next();
 return $this->parseFilterExpressionRaw($node);
 }
 public function parseFilterExpressionRaw($node, $tag = null)
 {
 while (\true) {
 $token = $this->parser->getStream()->expect(
 5
 );
 $name = new ConstantExpression($token->getValue(), $token->getLine());
 if (!$this->parser->getStream()->test(
 9,
 '('
 )) {
 $arguments = new Node();
 } else {
 $arguments = $this->parseArguments(\true, \false, \true);
 }
 $class = $this->getFilterNodeClass($name->getAttribute('value'), $token->getLine());
 $node = new $class($node, $name, $arguments, $token->getLine(), $tag);
 if (!$this->parser->getStream()->test(
 9,
 '|'
 )) {
 break;
 }
 $this->parser->getStream()->next();
 }
 return $node;
 }
 public function parseArguments($namedArguments = \false, $definition = \false, $allowArrow = \false)
 {
 $args = [];
 $stream = $this->parser->getStream();
 $stream->expect(
 9,
 '(',
 'A list of arguments must begin with an opening parenthesis'
 );
 while (!$stream->test(
 9,
 ')'
 )) {
 if (!empty($args)) {
 $stream->expect(
 9,
 ',',
 'Arguments must be separated by a comma'
 );
 // if the comma above was a trailing comma, early exit the argument parse loop
 if ($stream->test(
 9,
 ')'
 )) {
 break;
 }
 }
 if ($definition) {
 $token = $stream->expect(
 5,
 null,
 'An argument must be a name'
 );
 $value = new NameExpression($token->getValue(), $this->parser->getCurrentToken()->getLine());
 } else {
 $value = $this->parseExpression(0, $allowArrow);
 }
 $name = null;
 if ($namedArguments && ($token = $stream->nextIf(
 8,
 '='
 ))) {
 if (!$value instanceof NameExpression) {
 throw new SyntaxError(\sprintf('A parameter name must be a string, "%s" given.', \get_class($value)), $token->getLine(), $stream->getSourceContext());
 }
 $name = $value->getAttribute('name');
 if ($definition) {
 $value = $this->parsePrimaryExpression();
 if (!$this->checkConstantExpression($value)) {
 throw new SyntaxError('A default value for an argument must be a constant (a boolean, a string, a number, or an array).', $token->getLine(), $stream->getSourceContext());
 }
 } else {
 $value = $this->parseExpression(0, $allowArrow);
 }
 }
 if ($definition) {
 if (null === $name) {
 $name = $value->getAttribute('name');
 $value = new ConstantExpression(null, $this->parser->getCurrentToken()->getLine());
 }
 $args[$name] = $value;
 } else {
 if (null === $name) {
 $args[] = $value;
 } else {
 $args[$name] = $value;
 }
 }
 }
 $stream->expect(
 9,
 ')',
 'A list of arguments must be closed by a parenthesis'
 );
 return new Node($args);
 }
 public function parseAssignmentExpression()
 {
 $stream = $this->parser->getStream();
 $targets = [];
 while (\true) {
 $token = $this->parser->getCurrentToken();
 if ($stream->test(
 8
 ) && \preg_match(Lexer::REGEX_NAME, $token->getValue())) {
 // in this context, string operators are variable names
 $this->parser->getStream()->next();
 } else {
 $stream->expect(
 5,
 null,
 'Only variables can be assigned to'
 );
 }
 $value = $token->getValue();
 if (\in_array(\strtr($value, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'), ['true', 'false', 'none', 'null'])) {
 throw new SyntaxError(\sprintf('You cannot assign a value to "%s".', $value), $token->getLine(), $stream->getSourceContext());
 }
 $targets[] = new AssignNameExpression($value, $token->getLine());
 if (!$stream->nextIf(
 9,
 ','
 )) {
 break;
 }
 }
 return new Node($targets);
 }
 public function parseMultitargetExpression()
 {
 $targets = [];
 while (\true) {
 $targets[] = $this->parseExpression();
 if (!$this->parser->getStream()->nextIf(
 9,
 ','
 )) {
 break;
 }
 }
 return new Node($targets);
 }
 private function parseNotTestExpression(Node $node) : NotUnary
 {
 return new NotUnary($this->parseTestExpression($node), $this->parser->getCurrentToken()->getLine());
 }
 private function parseTestExpression(Node $node) : TestExpression
 {
 $stream = $this->parser->getStream();
 list($name, $test) = $this->getTest($node->getTemplateLine());
 $class = $this->getTestNodeClass($test);
 $arguments = null;
 if ($stream->test(
 9,
 '('
 )) {
 $arguments = $this->parseArguments(\true);
 } elseif ($test->hasOneMandatoryArgument()) {
 $arguments = new Node([0 => $this->parsePrimaryExpression()]);
 }
 if ('defined' === $name && $node instanceof NameExpression && null !== ($alias = $this->parser->getImportedSymbol('function', $node->getAttribute('name')))) {
 $node = new MethodCallExpression($alias['node'], $alias['name'], new ArrayExpression([], $node->getTemplateLine()), $node->getTemplateLine());
 $node->setAttribute('safe', \true);
 }
 return new $class($node, $name, $arguments, $this->parser->getCurrentToken()->getLine());
 }
 private function getTest(int $line) : array
 {
 $stream = $this->parser->getStream();
 $name = $stream->expect(
 5
 )->getValue();
 if ($test = $this->env->getTest($name)) {
 return [$name, $test];
 }
 if ($stream->test(
 5
 )) {
 // try 2-words tests
 $name = $name . ' ' . $this->parser->getCurrentToken()->getValue();
 if ($test = $this->env->getTest($name)) {
 $stream->next();
 return [$name, $test];
 }
 }
 $e = new SyntaxError(\sprintf('Unknown "%s" test.', $name), $line, $stream->getSourceContext());
 $e->addSuggestions($name, \array_keys($this->env->getTests()));
 throw $e;
 }
 private function getTestNodeClass(TwigTest $test) : string
 {
 if ($test->isDeprecated()) {
 $stream = $this->parser->getStream();
 $message = \sprintf('Twig Test "%s" is deprecated', $test->getName());
 if ($test->getDeprecatedVersion()) {
 $message .= \sprintf(' since version %s', $test->getDeprecatedVersion());
 }
 if ($test->getAlternative()) {
 $message .= \sprintf('. Use "%s" instead', $test->getAlternative());
 }
 $src = $stream->getSourceContext();
 $message .= \sprintf(' in %s at line %d.', $src->getPath() ?: $src->getName(), $stream->getCurrent()->getLine());
 @\trigger_error($message, \E_USER_DEPRECATED);
 }
 return $test->getNodeClass();
 }
 private function getFunctionNodeClass(string $name, int $line) : string
 {
 if (!($function = $this->env->getFunction($name))) {
 $e = new SyntaxError(\sprintf('Unknown "%s" function.', $name), $line, $this->parser->getStream()->getSourceContext());
 $e->addSuggestions($name, \array_keys($this->env->getFunctions()));
 throw $e;
 }
 if ($function->isDeprecated()) {
 $message = \sprintf('Twig Function "%s" is deprecated', $function->getName());
 if ($function->getDeprecatedVersion()) {
 $message .= \sprintf(' since version %s', $function->getDeprecatedVersion());
 }
 if ($function->getAlternative()) {
 $message .= \sprintf('. Use "%s" instead', $function->getAlternative());
 }
 $src = $this->parser->getStream()->getSourceContext();
 $message .= \sprintf(' in %s at line %d.', $src->getPath() ?: $src->getName(), $line);
 @\trigger_error($message, \E_USER_DEPRECATED);
 }
 return $function->getNodeClass();
 }
 private function getFilterNodeClass(string $name, int $line) : string
 {
 if (!($filter = $this->env->getFilter($name))) {
 $e = new SyntaxError(\sprintf('Unknown "%s" filter.', $name), $line, $this->parser->getStream()->getSourceContext());
 $e->addSuggestions($name, \array_keys($this->env->getFilters()));
 throw $e;
 }
 if ($filter->isDeprecated()) {
 $message = \sprintf('Twig Filter "%s" is deprecated', $filter->getName());
 if ($filter->getDeprecatedVersion()) {
 $message .= \sprintf(' since version %s', $filter->getDeprecatedVersion());
 }
 if ($filter->getAlternative()) {
 $message .= \sprintf('. Use "%s" instead', $filter->getAlternative());
 }
 $src = $this->parser->getStream()->getSourceContext();
 $message .= \sprintf(' in %s at line %d.', $src->getPath() ?: $src->getName(), $line);
 @\trigger_error($message, \E_USER_DEPRECATED);
 }
 return $filter->getNodeClass();
 }
 // checks that the node only contains "constant" elements
 private function checkConstantExpression(Node $node) : bool
 {
 if (!($node instanceof ConstantExpression || $node instanceof ArrayExpression || $node instanceof NegUnary || $node instanceof PosUnary)) {
 return \false;
 }
 foreach ($node as $n) {
 if (!$this->checkConstantExpression($n)) {
 return \false;
 }
 }
 return \true;
 }
}
