#  This file contains tokens for symbols used in standard unary/binary syntax
#
#  operator      token      unary/binary/special    (see notes at bottom)

   :=             ASSIGN     _ b
   :=:            SWAP       _ b
   <-             REVASSIGN  _ b
   <->            REVSWAP    _ b
   &    (:=  AUG) AND        s b   # unary form is for keywords
   @    (:=  AUG) AT         s s   # control structures for activation
   ^    (:=  AUG) CARET      u b
   ||   (:=  AUG) CONCAT     _ b
   --   (:=  AUG) DIFF       _ b
   ===  (:=  AUG) EQUIV      _ b
   **   (:=  AUG) INTER      _ b
   |||  (:=  AUG) LCONCAT    _ b
   -    (:=  AUG) MINUS      u b
   %    (:=  AUG) MOD        _ b
   ~=== (:=  AUG) NEQUIV     _ b
   =    (:=  AUG) NMEQ       u b
   >=   (:=  AUG) NMGE       _ b
   >    (:=  AUG) NMGT       _ b
   <=   (:=  AUG) NMLE       _ b
   <    (:=  AUG) NMLT       _ b
   ~=   (:=  AUG) NMNE       _ b
   +    (:=  AUG) PLUS       u b
   ?    (:=  AUG) QMARK      u s   # binary form is a control structure
   ==   (:=  AUG) SEQ        _ b
   >>=  (:=  AUG) SGE        _ b
   >>   (:=  AUG) SGT        _ b
   <<=  (:=  AUG) SLE        _ b
   <<   (:=  AUG) SLT        _ b
   ~==  (:=  AUG) SNE        _ b
   /    (:=  AUG) SLASH      u b
   *    (:=  AUG) STAR       u b
   ++   (:=  AUG) UNION      _ b
   \              BACKSLASH  u s   # binary form is a control structure
   |              BAR        s s   # unary & binary forms are control strutures
   !              BANG       u s   # binary form is a control structure
   .              DOT        u s   # binary form is for field references
   ~              TILDE      u _


# notes,
#
#  (:=  AUG) indicates that the binary operator has an augmented
#            assignment form. For example, the entry 
#                 +    (:=  AUG) PLUS      ub
#            acts like two entries:
#                 +              PLUS      ub
#                 +:=            AUGPLUS    b
#             except that the compiler automatically combines the
#             implementations for + and := to implement +:=.
#  
#  1st flag: _ - no unary form
#            u - unary operator implemented by .rtt file
#            s - unary form but special implementation within the compiler
#
#  2st flag: _ - no binary form
#            b - binary operator implemented by .rtt file
#            s - binary form but special implementation within the compiler