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<?php |
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/** |
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* This file is part of Railt package. |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Railt\Compiler\Grammar\PP2; |
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use Railt\Io\Readable; |
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use Railt\Parser\Ast\RuleInterface; |
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use Railt\Parser\Configuration; |
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use Railt\Parser\Parser as LLParser; |
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use Railt\Parser\ParserInterface; |
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use Railt\Parser\Rule\Alternation; |
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use Railt\Parser\Rule\Concatenation; |
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use Railt\Parser\Rule\Repetition; |
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use Railt\Parser\Rule\Token; |
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/** |
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* Class Parser |
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*/ |
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class Parser implements ParserInterface |
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{ |
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/** |
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* @var ParserInterface |
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*/ |
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private $llk; |
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/** |
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* Parser constructor. |
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*/ |
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public function __construct() |
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{ |
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$this->llk = new LLParser(new Lexer(), $this->rules(), $this->options()); |
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} |
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/** |
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* @return array |
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*/ |
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private function rules(): array |
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{ |
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return [ |
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// 0 |
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new Repetition(1, 0, -1, [6], 'Grammar'), |
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new Token(2, 'T_PRAGMA', true), |
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new Token(3, 'T_TOKEN', true), |
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new Token(4, 'T_SKIP', true), |
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new Token(5, 'T_INCLUDE', true), |
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new Alternation(6, [2, 3, 4, 5, 7,], null), |
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new Concatenation(7, [12, 19,], 'Rule'), |
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new Repetition(8, 0, 1, [17,], null), |
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new Token(9, 'T_NAME', true), |
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new Repetition(10, 0, 1, [15,], null), |
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new Token(11, 'T_COLON', false), |
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new Concatenation(12, [8, 9, 10, 11,], 'Name'), |
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new Token(13, 'T_DELEGATE', false), |
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new Token(14, 'T_NAME', true), |
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new Concatenation(15, [13, 14,], 'Delegate'), |
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new Token(16, 'T_KEPT_NAME', false), |
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new Concatenation(17, [16,], 'ShouldKeep'), |
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new Repetition(18, 1, -1, [20,], null), |
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new Concatenation(19, [18,], 'Production'), |
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new Alternation(20, [33, 66, 36, 24, 23,], null), |
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new Token(21, 'T_KEPT_NAME', false), |
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new Token(22, 'T_NAME', true), |
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new Concatenation(23, [21, 22,], 'Rename'), |
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new Alternation(24, [32, 28,], null), |
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new Token(25, 'T_GROUP_OPEN', false), |
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new Repetition(26, 1, -1, [20,], null), |
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new Token(27, 'T_GROUP_CLOSE', false), |
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new Concatenation(28, [25, 26, 27,], null), |
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new Token(29, 'T_KEPT', true), |
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new Token(30, 'T_SKIPPED', true), |
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new Token(31, 'T_INVOKE', true), |
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new Alternation(32, [29, 30, 31,], null), |
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new Repetition(33, 2, -1, [24,], 'Concatenation'), |
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// 34 |
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new Repetition(35, 1, -1, [24,], null), |
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new Concatenation(36, [35, 44,], 'Repetition'), |
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new Token(37, 'T_ZERO_OR_ONE', true), |
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new Concatenation(38, [37,], 'RepetitionInterval'), |
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new Token(39, 'T_ONE_OR_MORE', true), |
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new Concatenation(40, [39,], 'RepetitionInterval'), |
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new Token(41, 'T_ZERO_OR_MORE', true), |
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new Concatenation(42, [41,], 'RepetitionInterval'), |
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new Concatenation(43, [48,], 'RepetitionInterval'), |
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new Alternation(44, [38, 40, 42, 43,], null), |
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new Token(45, 'T_REPETITION_OPEN', false), |
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new Alternation(46, [52, 54,], null), |
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new Token(47, 'T_REPETITION_CLOSE', false), |
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new Concatenation(48, [45, 46, 47,], null), |
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new Repetition(49, 0, 1, [56,], null), |
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new Token(50, 'T_COMMA', false), |
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new Repetition(51, 0, 1, [58,], null), |
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new Concatenation(52, [49, 50, 51,], null), |
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new Token(53, 'T_NUMBER', true), |
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new Concatenation(54, [53,], 'Repeat'), |
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new Token(55, 'T_NUMBER', true), |
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new Concatenation(56, [55,], 'From'), |
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new Token(57, 'T_NUMBER', true), |
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new Concatenation(58, [57,], 'To'), |
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new Concatenation(59, [33,], 'Alternation'), |
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new Concatenation(60, [24,], 'Alternation'), |
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new Alternation(61, [59, 60,], null), |
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new Token(62, 'T_OR', false), |
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new Alternation(63, [33, 24,], null), |
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new Concatenation(64, [62, 63,], null), |
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new Repetition(65, 1, -1, [64,], null), |
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new Concatenation(66, [61, 65,], null), |
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]; |
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} |
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/** |
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* @return array |
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*/ |
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private function options(): array |
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{ |
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return [ |
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Configuration::PRAGMA_ROOT => 'Grammar', |
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Configuration::PRAGMA_LOOKAHEAD => 1024, |
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]; |
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} |
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/** |
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* @param Readable $input |
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* @return RuleInterface |
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* @throws \LogicException |
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* @throws \Railt\Io\Exception\ExternalFileException |
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* @throws \Railt\Parser\Exception\UnrecognizedRuleException |
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*/ |
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public function parse(Readable $input): RuleInterface |
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{ |
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return $this->llk->parse($input); |
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} |
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} |
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railt /
compiler
It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: