1 files changed, 4 insertions, 66 deletions

diff --git a/vendor/scssphp/scssphp/src/SourceMap/Base64VLQ.php b/vendor/scssphp/scssphp/src/SourceMap/Base64VLQ.php
index 2a5210c68..166466777 100644
--- a/vendor/scssphp/scssphp/src/SourceMap/Base64VLQ.php
+++ b/vendor/scssphp/scssphp/src/SourceMap/Base64VLQ.php
@@ -37,7 +37,7 @@ namespace ScssPhp\ScssPhp\SourceMap;
  *
  * @internal
  */
-class Base64VLQ
+final class Base64VLQ
 {
     // A Base64 VLQ digit can represent 5 bits, so it is base-32.
     const VLQ_BASE_SHIFT = 5;
@@ -50,12 +50,8 @@ class Base64VLQ
 
     /**
      * Returns the VLQ encoded value.
-     *
-     * @param int $value
-     *
-     * @return string
      */
-    public static function encode($value)
+    public static function encode(int $value): string
     {
         $encoded = '';
         $vlq = self::toVLQSigned($value);
@@ -77,75 +73,17 @@ class Base64VLQ
     }
 
     /**
-     * Decodes VLQValue.
-     *
-     * @param string $str
-     * @param int    $index
-     *
-     * @return int
-     */
-    public static function decode($str, &$index)
-    {
-        $result = 0;
-        $shift = 0;
-
-        do {
-            $c = $str[$index++];
-            $digit = Base64::decode($c);
-            $continuation = ($digit & self::VLQ_CONTINUATION_BIT) != 0;
-            $digit &= self::VLQ_BASE_MASK;
-            $result = $result + ($digit << $shift);
-            $shift = $shift + self::VLQ_BASE_SHIFT;
-        } while ($continuation);
-
-        return self::fromVLQSigned($result);
-    }
-
-    /**
      * Converts from a two-complement value to a value where the sign bit is
      * is placed in the least significant bit.  For example, as decimals:
      *   1 becomes 2 (10 binary), -1 becomes 3 (11 binary)
      *   2 becomes 4 (100 binary), -2 becomes 5 (101 binary)
-     *
-     * @param int $value
-     *
-     * @return int
      */
-    private static function toVLQSigned($value)
+    private static function toVLQSigned(int $value): int
     {
         if ($value < 0) {
             return ((-$value) << 1) + 1;
         }
 
-        return ($value << 1) + 0;
-    }
-
-    /**
-     * Converts to a two-complement value from a value where the sign bit is
-     * is placed in the least significant bit.  For example, as decimals:
-     *   2 (10 binary) becomes 1, 3 (11 binary) becomes -1
-     *   4 (100 binary) becomes 2, 5 (101 binary) becomes -2
-     *
-     * @param int $value
-     *
-     * @return int
-     */
-    private static function fromVLQSigned($value)
-    {
-        $negate = ($value & 1) === 1;
-
-        //$value >>>= 1; // unsigned right shift
-        $value = ($value >> 1) & PHP_INT_MAX;
-
-        if (! $negate) {
-            return $value;
-        }
-
-        // We need to OR 0x80000000 here to ensure the 32nd bit (the sign bit) is
-        // always set for negative numbers. If `value` were 1, (meaning `negate` is
-        // true and all other bits were zeros), `value` would now be 0. -0 is just
-        // 0, and doesn't flip the 32nd bit as intended. All positive numbers will
-        // successfully flip the 32nd bit without issue, so it's a noop for them.
-        return -$value | 0x80000000;
+        return $value << 1;
     }
 }