X-Git-Url: https://scripts.mit.edu/gitweb/autoinstallsdev/mediawiki.git/blobdiff_plain/19e297c21b10b1b8a3acad5e73fc71dcb35db44a..6932310fd58ebef145fa01eb76edf7150284d8ea:/vendor/wikimedia/css-sanitizer/src/Grammar/KeywordMatcher.php

diff --git a/vendor/wikimedia/css-sanitizer/src/Grammar/KeywordMatcher.php b/vendor/wikimedia/css-sanitizer/src/Grammar/KeywordMatcher.php
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+<?php
+/**
+ * @file
+ * @license https://opensource.org/licenses/Apache-2.0 Apache-2.0
+ */
+
+namespace Wikimedia\CSS\Grammar;
+
+use Wikimedia\CSS\Objects\ComponentValueList;
+use Wikimedia\CSS\Objects\Token;
+
+/**
+ * Matcher that matches one of a set of keywords, case-insensitively
+ *
+ * This is intended for matching specific <ident-token>s, but will work for
+ * other types (case-insensitively) too. For delimiter (or case-sensitive)
+ * matching, use DelimMatcher.
+ *
+ * @see https://www.w3.org/TR/2016/CR-css-values-3-20160929/#component-types
+ */
+class KeywordMatcher extends Matcher {
+	/** @var string One of the Token::T_* constants */
+	protected $type;
+
+	/** @var array Associative array with keys being the values to match */
+	protected $values;
+
+	/**
+	 * @param string|string[] $values Token values to match
+	 * @param array $options Options
+	 *  - type: (string) Token type to match. Default is Token::T_IDENT.
+	 */
+	public function __construct( $values, array $options = [] ) {
+		$options += [
+			'type' => Token::T_IDENT,
+		];
+
+		$this->values = array_flip( array_map( 'strtolower', (array)$values ) );
+		$this->type = $options['type'];
+	}
+
+	protected function generateMatches( ComponentValueList $values, $start, array $options ) {
+		$cv = isset( $values[$start] ) ? $values[$start] : null;
+		if ( $cv instanceof Token && $cv->type() === $this->type &&
+			isset( $this->values[strtolower( $cv->value() )] )
+		) {
+			yield $this->makeMatch( $values, $start, $this->next( $values, $start, $options ) );
+		}
+	}
+}