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51 lines
1.4 KiB
51 lines
1.4 KiB
<?php
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/** @license MIT
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* Copyright 2021 Dustin Wilson et al.
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* See LICENSE file for details */
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declare(strict_types=1);
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namespace dW\Lit\Scope;
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class Expression extends Node {
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protected Filter|Group|Path $_child;
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protected bool $_negate = false;
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protected int $_operator;
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const OPERATOR_NONE = 0;
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const OPERATOR_AND = 1;
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const OPERATOR_OR = 2;
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const OPERATOR_NOT = 3;
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public function __construct(Filter|Group|Path $child, int $operator = self::OPERATOR_NONE, bool $negate = false) {
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$this->_child = $child;
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$this->_negate = $negate;
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$this->_operator = $operator;
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}
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public function getPrefix(array $scopes): ?int {
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return ($this->matches($scopes)) ? $this->_child->getPrefix($scopes) : null;
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}
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public function matches(array $scopes): bool {
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$matches = $this->_child->matches($scopes);
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return ($this->_negate) ? !$matches : $matches;
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}
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public function __toString(): string {
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switch ($this->_operator) {
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case self::OPERATOR_NONE: $operator = '';
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break;
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case self::OPERATOR_AND: $operator = '& ';
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break;
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case self::OPERATOR_OR: $operator = '| ';
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break;
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case self::OPERATOR_NOT: $operator = '- ';
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}
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$negate = ($this->_negate) ? '- ' : '';
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return "$operator$negate{$this->_child}";
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}
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}
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