<?php
namespace MailPoetVendor\Twig;
if (!defined('ABSPATH')) exit;
use MailPoetVendor\Twig\Error\SyntaxError;
final class TokenStream
{
private $tokens;
private $current = 0;
private $source;
public function __construct(array $tokens, Source $source = null)
{
$this->tokens = $tokens;
$this->source = $source ?: new Source('', '');
}
public function __toString()
{
return \implode("\n", $this->tokens);
}
public function injectTokens(array $tokens)
{
$this->tokens = \array_merge(\array_slice($this->tokens, 0, $this->current), $tokens, \array_slice($this->tokens, $this->current));
}
public function next() : Token
{
if (!isset($this->tokens[++$this->current])) {
throw new SyntaxError('Unexpected end of template.', $this->tokens[$this->current - 1]->getLine(), $this->source);
}
return $this->tokens[$this->current - 1];
}
public function nextIf($primary, $secondary = null)
{
if ($this->tokens[$this->current]->test($primary, $secondary)) {
return $this->next();
}
}
public function expect($type, $value = null, string $message = null) : Token
{
$token = $this->tokens[$this->current];
if (!$token->test($type, $value)) {
$line = $token->getLine();
throw new SyntaxError(\sprintf('%sUnexpected token "%s"%s ("%s" expected%s).', $message ? $message . '. ' : '', Token::typeToEnglish($token->getType()), $token->getValue() ? \sprintf(' of value "%s"', $token->getValue()) : '', Token::typeToEnglish($type), $value ? \sprintf(' with value "%s"', $value) : ''), $line, $this->source);
}
$this->next();
return $token;
}
public function look(int $number = 1) : Token
{
if (!isset($this->tokens[$this->current + $number])) {
throw new SyntaxError('Unexpected end of template.', $this->tokens[$this->current + $number - 1]->getLine(), $this->source);
}
return $this->tokens[$this->current + $number];
}
public function test($primary, $secondary = null) : bool
{
return $this->tokens[$this->current]->test($primary, $secondary);
}
public function isEOF() : bool
{
return -1 === $this->tokens[$this->current]->getType();
}
public function getCurrent() : Token
{
return $this->tokens[$this->current];
}
public function getSourceContext() : Source
{
return $this->source;
}
}