///
/// Parser to support BEM syntax
///
/// @access private
///
/// @param {List} $selectors - string of selectors to parse
///
/// @return {List} - parsed list of selectors according to syntax
///
/// @group Internal Functions
///
@function flint-support-syntax-bem($selectors) {
    $selectors: flint-list-to-str($selectors, " ");
    // Clean up selector, remove double underscores for spaces
    //  add pseudo character to differentiate selectors
    $selectors: flint-str-replace($selectors, "__", "/");
    // Parse string back to list without pseudo character
    $selectors: flint-str-to-list($selectors, "/");
    // Define top-most parent of selector
    $parent: nth($selectors, 1);
    // Create new list of parsed selectors
    $selector-list: ($parent,);

    // Loop over each selector and build list of selectors
    @each $selector in $selectors {
        // Make sure current selector is not the parent
        @if $selector != $parent {
            // Save to selector list
            $selector-list: append($selector-list, "#{$parent}__#{$selector}", "comma");
            // Define new parent
            $parent: "#{$parent}__#{$selector}";
        }
    }

    // Return the list of parsed selectors
    @return $selector-list;
}