WP_Interactivity_API::data_wp_each_processor( WP_Interactivity_API_Directives_Processor $p, string $mode, array $context_stack, array $namespace_stack, array $tag_stack )

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			list( , $class_name ) = $this->extract_prefix_and_suffix( $attribute_name );
			if ( empty( $class_name ) ) {
				return;
			}

			$attribute_value = $p->get_attribute( $attribute_name );
			$result          = $this->evaluate( $attribute_value );

			if ( $result ) {
				$p->add_class( $class_name );
			} else {
				$p->remove_class( $class_name );
			}
		}
	}
}

/**
 * Processes the `data-wp-style` directive.
 *
 * It updates the style attribute value of the current HTML element based on
 * the evaluation of its associated references.
 *
 * @since 6.5.0
 *
 * @param WP_Interactivity_API_Directives_Processor $p               The directives processor instance.
 * @param string                                    $mode            Whether the processing is entering or exiting the tag.
 */
private function data_wp_style_processor( WP_Interactivity_API_Directives_Processor $p, string $mode ) {
	if ( 'enter' === $mode ) {
		$all_style_attributes = $p->get_attribute_names_with_prefix( 'data-wp-style--' );

		foreach ( $all_style_attributes as $attribute_name ) {
			list( , $style_property ) = $this->extract_prefix_and_suffix( $attribute_name );
			if ( empty( $style_property ) ) {
				continue;
			}

			$directive_attribute_value = $p->get_attribute( $attribute_name );
			$style_property_value      = $this->evaluate( $directive_attribute_value );
			$style_attribute_value     = $p->get_attribute( 'style' );
			$style_attribute_value     = ( $style_attribute_value && ! is_bool( $style_attribute_value ) ) ? $style_attribute_value : '';

			/*
			 * Checks first if the style property is not falsy and the style
			 * attribute value is not empty because if it is, it doesn't need to
			 * update the attribute value.
			 */
			if ( $style_property_value || $style_attribute_value ) {
				$style_attribute_value = $this->merge_style_property( $style_attribute_value, $style_property, $style_property_value );
				/*
				 * If the style attribute value is not empty, it sets it. Otherwise,
				 * it removes it.
				 */
				if ( ! empty( $style_attribute_value ) ) {
					$p->set_attribute( 'style', $style_attribute_value );
				} else {
					$p->remove_attribute( 'style' );
				}
			}
		}
	}
}

/**
 * Merges an individual style property in the `style` attribute of an HTML
 * element, updating or removing the property when necessary.
 *
 * If a property is modified, the old one is removed and the new one is added
 * at the end of the list.
 *
 * @since 6.5.0
 *
 * Example:
 *
 *     merge_style_property( 'color:green;', 'color', 'red' )      => 'color:red;'
 *     merge_style_property( 'background:green;', 'color', 'red' ) => 'background:green;color:red;'
 *     merge_style_property( 'color:green;', 'color', null )       => ''
 *
 * @param string            $style_attribute_value The current style attribute value.
 * @param string            $style_property_name   The style property name to set.
 * @param string|false|null $style_property_value  The value to set for the style property. With false, null or an

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