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<?php |
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declare(strict_types=1); |
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/** |
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* @license http://opensource.org/licenses/mit-license.php MIT |
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* @link https://github.com/nicoSWD |
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* @author Nicolas Oelgart <[email protected]> |
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*/ |
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namespace nicoSWD\Rules\TokenStream\Nodes; |
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use nicoSWD\Rules\TokenStream\TokenCollection; |
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use nicoSWD\Rules\Exceptions\ParserException; |
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use nicoSWD\Rules\Grammar\CallableFunction; |
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use nicoSWD\Rules\TokenStream\TokenStream; |
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use nicoSWD\Rules\Tokens\TokenType; |
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use nicoSWD\Rules\Tokens; |
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abstract class BaseNode |
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{ |
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/** @var TokenStream */ |
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protected $tokenStream; |
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/** @var string */ |
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protected $methodName = ''; |
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/** @var int */ |
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protected $methodOffset = 0; |
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public function __construct(TokenStream $tokenStream) |
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{ |
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$this->tokenStream = $tokenStream; |
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202 |
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} |
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abstract public function getNode(): Tokens\BaseToken; |
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/** |
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* Looks ahead, but does not move the pointer. |
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*/ |
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protected function hasMethodCall(): bool |
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{ |
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$stackClone = $this->tokenStream->getStack()->getClone(); |
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while ($stackClone->valid()) { |
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$stackClone->next(); |
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if (!$token = $stackClone->current()) { |
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break; |
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} elseif ($token->isWhitespace()) { |
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continue; |
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188 |
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} elseif ($token instanceof Tokens\TokenMethod) { |
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$this->methodName = $token->getValue(); |
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$this->methodOffset = $token->getOffset(); |
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return true; |
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} else { |
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break; |
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} |
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} |
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return false; |
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} |
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108 |
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public function getMethod(Tokens\BaseToken $token): CallableFunction |
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{ |
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return $this->tokenStream->getMethod($this->getMethodName(), $token); |
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} |
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private function getMethodName(): string |
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{ |
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do { |
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108 |
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$this->tokenStream->next(); |
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} while ($this->getCurrentNode()->getOffset() < $this->methodOffset); |
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return trim(ltrim(rtrim($this->methodName, "\r\n("), '.')); |
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} |
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public function getFunction(): \Closure |
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{ |
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return $this->tokenStream->getFunction($this->getFunctionName()); |
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} |
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26 |
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private function getFunctionName(): string |
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{ |
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return rtrim($this->getCurrentNode()->getValue(), " \r\n("); |
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} |
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public function getArrayItems(): TokenCollection |
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{ |
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return $this->getCommaSeparatedValues(TokenType::SQUARE_BRACKETS); |
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} |
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124 |
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public function getArguments(): TokenCollection |
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{ |
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return $this->getCommaSeparatedValues(TokenType::PARENTHESIS); |
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} |
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public function getCurrentNode() |
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{ |
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return $this->tokenStream->getStack()->current(); |
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} |
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146 |
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private function getCommaSeparatedValues(int $stopAt): TokenCollection |
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{ |
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$commaExpected = false; |
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146 |
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$items = new TokenCollection(); |
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108
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do { |
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$this->tokenStream->next(); |
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146 |
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if (!$current = $this->tokenStream->current()) { |
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throw new ParserException('Unexpected end of string'); |
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} |
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146 |
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if ($current->getType() === TokenType::VALUE) { |
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if ($commaExpected) { |
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4 |
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throw ParserException::unexpectedToken($current); |
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} |
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$commaExpected = true; |
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$items->attach($current); |
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} elseif ($current instanceof Tokens\TokenComma) { |
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if (!$commaExpected) { |
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throw ParserException::unexpectedToken($current); |
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} |
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$commaExpected = false; |
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} elseif ($current->getType() === $stopAt) { |
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break; |
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} elseif (!$current->isWhitespace()) { |
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throw ParserException::unexpectedToken($current); |
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} |
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122 |
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} while ($this->tokenStream->valid()); |
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130 |
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if (!$commaExpected && $items->count() > 0) { |
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throw new ParserException(sprintf( |
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'Unexpected "," at position %d on line %d', |
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$current->getPosition(), |
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$current->getLine() |
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)); |
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} |
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$items->rewind(); |
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return $items; |
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} |
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147
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} |
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nicoSWD /
php-rule-parser
