pushLocalScope example

final class MacroTokenParser extends AbstractTokenParser
{
    public function parse(Token $token): Node
    {
        $lineno = $token->getLine();
        $stream = $this->parser->getStream();
        $name = $stream->expect(/* Token::NAME_TYPE */ 5)->getValue();

        $arguments = $this->parser->getExpressionParser()->parseArguments(true, true);

        $stream->expect(/* Token::BLOCK_END_TYPE */ 3);
        $this->parser->pushLocalScope();
        $body = $this->parser->subparse([$this, 'decideBlockEnd'], true);
        if ($token = $stream->nextIf(/* Token::NAME_TYPE */ 5)) {
            $value = $token->getValue();

            if ($value != $name) {
                throw new SyntaxError(sprintf('Expected endmacro for macro "%s" (but "%s" given).', $name$value)$stream->getCurrent()->getLine()$stream->getSourceContext());
            }
        }
        $this->parser->popLocalScope();
        $stream->expect(/* Token::BLOCK_END_TYPE */ 3);

        
final class BlockTokenParser extends AbstractTokenParser
{
    public function parse(Token $token): Node
    {
        $lineno = $token->getLine();
        $stream = $this->parser->getStream();
        $name = $stream->expect(/* Token::NAME_TYPE */ 5)->getValue();
        if ($this->parser->hasBlock($name)) {
            throw new SyntaxError(sprintf("The block '%s' has already been defined line %d.", $name$this->parser->getBlock($name)->getTemplateLine())$stream->getCurrent()->getLine()$stream->getSourceContext());
        }
        $this->parser->setBlock($name$block = new BlockNode($namenew Node([])$lineno));
        $this->parser->pushLocalScope();
        $this->parser->pushBlockStack($name);

        if ($stream->nextIf(/* Token::BLOCK_END_TYPE */ 3)) {
            $body = $this->parser->subparse([$this, 'decideBlockEnd'], true);
            if ($token = $stream->nextIf(/* Token::NAME_TYPE */ 5)) {
                $value = $token->getValue();

                if ($value != $name) {
                    throw new SyntaxError(sprintf('Expected endblock for block "%s" (but "%s" given).', $name$value)$stream->getCurrent()->getLine()$stream->getSourceContext());
                }
            }
        }
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