src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/parser/TokenType.java

*** 61,74 ****
--- 61,76 ----
      ASSIGN_BIT_AND (BINARY,  "&=",    2, false),
      LPAREN         (BRACKET, "(",    16, true),
      RPAREN         (BRACKET, ")",     0, true),
      MUL            (BINARY,  "*",    13, true),
      ASSIGN_MUL     (BINARY,  "*=",    2, false),
+     POS            (UNARY,   "+",    14, false),
      ADD            (BINARY,  "+",    12, true),
      INCPREFIX      (UNARY,   "++",   15, true),
      ASSIGN_ADD     (BINARY,  "+=",    2, false),
      COMMARIGHT     (BINARY,  ",",     1, true),
+     NEG            (UNARY,   "-",    14, false),
      SUB            (BINARY,  "-",    12, true),
      DECPREFIX      (UNARY,   "--",   15, true),
      ASSIGN_SUB     (BINARY,  "-=",    2, false),
      PERIOD         (BRACKET, ".",    17, true),
      DIV            (BINARY,  "/",    13, true),