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<?php
declare(strict_types=1);
namespace Remorhaz\UniLex\AST;
use Remorhaz\UniLex\Exception;
use Remorhaz\UniLex\Stack\SymbolStack;
class Translator
{
private $tree;
private $listener;
private $stack;
public function __construct(Tree $tree, TranslatorListenerInterface $listener)
$this->tree = $tree;
$this->listener = $listener;
$this->stack = new SymbolStack();
}
/**
* @throws Exception
*/
public function run(): void
$this->stack->reset();
$rootNode = $this->tree->getRootNode();
$this->listener->onStart($rootNode);
$this->stack->push($rootNode);
while (!$this->stack->isEmpty()) {
$symbol = $this->stack->pop();
if ($symbol instanceof EopSymbol) {
$this->listener->onFinishProduction($symbol->getNode());
} elseif ($symbol instanceof Node) {
$this->stack->push(new EopSymbol($symbol));
$this->listener->onBeginProduction($symbol, $this->stack);
} elseif ($symbol instanceof Symbol) {
$this->listener->onSymbol($symbol, $this->stack);
$this->listener->onFinish();
remorhaz /
php-unilex
