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<?php

/*

* This file is part of the Brunk\ParserUtils package.

*

* (c) YoSymfony <http://github.com/yosymfony>

*

* For the full copyright and license information, please view the LICENSE

* file that was distributed with this source code.

*/

namespace Brunk\ParserUtils;

abstract class AbstractParser

{

protected LexerInterface $lexer;

/**

* Constructor

*

* @param LexerInterface $lexer The lexer

*/

public function __construct(LexerInterface $lexer)

{

$this->lexer = $lexer;

}

/**

* Parse a given input

*

* @param string $input

*

* @return mixed

*/

public function parse(string $input): mixed {

$ts = $this->lexer->tokenize($input);

$parseResult = $this->parseImplementation($ts);

if ($ts->hasPendingTokens()) {

throw new SyntaxErrorException('There are tokens not processed.');

}

return $parseResult;

}

/**

* Do the real parsing

*

* @param TokenStream $stream The token stream returned by the lexer

*

* @return mixed

*/

abstract protected function parseImplementation(TokenStream $stream): mixed;

}