Import latest app updates from streamline

An updated set of source files and initialization was provided by streamline to
address issues observed during initial testing. These files have been updated in
order to generate a new set of app images.

docker/streamline-src/vendor/symfony/css-selector/Parser/TokenStream.php

@@ -1,156 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\CssSelector\Parser;
-
-use Symfony\Component\CssSelector\Exception\InternalErrorException;
-use Symfony\Component\CssSelector\Exception\SyntaxErrorException;
-
-/**
- * CSS selector token stream.
- *
- * This component is a port of the Python cssselect library,
- * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
- *
- * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
- *
- * @internal
- */
-class TokenStream
-{
-    /**
-     * @var Token[]
-     */
-    private array $tokens = [];
-
-    /**
-     * @var Token[]
-     */
-    private array $used = [];
-
-    private int $cursor = 0;
-    private ?Token $peeked;
-    private bool $peeking = false;
-
-    /**
-     * Pushes a token.
-     *
-     * @return $this
-     */
-    public function push(Token $token): static
-    {
-        $this->tokens[] = $token;
-
-        return $this;
-    }
-
-    /**
-     * Freezes stream.
-     *
-     * @return $this
-     */
-    public function freeze(): static
-    {
-        return $this;
-    }
-
-    /**
-     * Returns next token.
-     *
-     * @throws InternalErrorException If there is no more token
-     */
-    public function getNext(): Token
-    {
-        if ($this->peeking) {
-            $this->peeking = false;
-            $this->used[] = $this->peeked;
-
-            return $this->peeked;
-        }
-
-        if (!isset($this->tokens[$this->cursor])) {
-            throw new InternalErrorException('Unexpected token stream end.');
-        }
-
-        return $this->tokens[$this->cursor++];
-    }
-
-    /**
-     * Returns peeked token.
-     */
-    public function getPeek(): Token
-    {
-        if (!$this->peeking) {
-            $this->peeked = $this->getNext();
-            $this->peeking = true;
-        }
-
-        return $this->peeked;
-    }
-
-    /**
-     * Returns used tokens.
-     *
-     * @return Token[]
-     */
-    public function getUsed(): array
-    {
-        return $this->used;
-    }
-
-    /**
-     * Returns next identifier token.
-     *
-     * @throws SyntaxErrorException If next token is not an identifier
-     */
-    public function getNextIdentifier(): string
-    {
-        $next = $this->getNext();
-
-        if (!$next->isIdentifier()) {
-            throw SyntaxErrorException::unexpectedToken('identifier', $next);
-        }
-
-        return $next->getValue();
-    }
-
-    /**
-     * Returns next identifier or null if star delimiter token is found.
-     *
-     * @throws SyntaxErrorException If next token is not an identifier or a star delimiter
-     */
-    public function getNextIdentifierOrStar(): ?string
-    {
-        $next = $this->getNext();
-
-        if ($next->isIdentifier()) {
-            return $next->getValue();
-        }
-
-        if ($next->isDelimiter(['*'])) {
-            return null;
-        }
-
-        throw SyntaxErrorException::unexpectedToken('identifier or "*"', $next);
-    }
-
-    /**
-     * Skips next whitespace if any.
-     */
-    public function skipWhitespace(): void
-    {
-        $peek = $this->getPeek();
-
-        if ($peek->isWhitespace()) {
-            $this->getNext();
-        }
-    }
-}