src/Headers/lsymbol.h

   1 /*
   2 ** Copyright (C) University of Virginia, Massachusetts Institue of Technology 1994-2003.
   3 ** See ../LICENSE for license information.
   4 **
   5 */
   6
   7 # ifndef LSYMBOL_H
   8 # define LSYMBOL_H
   9
  10 /*
  11 ** Offset entries by 1, so 0 is available.
  12 */
  13
  14 /*@constant null lsymbol lsymbol_undefined; @*/
  15 # define lsymbol_undefined ((lsymbol) 0)
  16
  17 extern bool lsymbol_isDefined (lsymbol p_s);
  18 # define lsymbol_isDefined(s) ((s) != lsymbol_undefined)
  19
  20 extern bool lsymbol_isUndefined (lsymbol p_s);
  21 # define lsymbol_isUndefined(s) ((s) == lsymbol_undefined)
  22
  23 extern lsymbol lsymbol_fromChars (/*@temp@*/ const char *) /*@*/ ;
  24 extern lsymbol lsymbol_fromString (/*@temp@*/ cstring p_s) /*@*/ ;
  25 extern /*@exposed@*/ /*@null@*/ char *lsymbol_toChars (lsymbol) /*@*/ ;
  26 extern /*@exposed@*/ char *lsymbol_toCharsSafe (lsymbol) /*@*/ ;
  27 extern /*@observer@*/ cstring lsymbol_toString(lsymbol) /*@*/ ;
  28
  29 extern bool lsymbol_equal (lsymbol p_s1, lsymbol p_s2) /*@*/ ;
  30 # define lsymbol_equal(s1, s2) ((s1) == (s2))
  31
  32 extern void lsymbol_initMod (void) /*@modifies internalState@*/ ;
  33 extern void lsymbol_destroyMod (void) /*@modifies internalState@*/ ;
  34
  35 # else
  36 # error "Multiple include"
  37 # endif