libguile/symbols.h

   1 /* classes: h_files */
   2
   3 #ifndef SYMBOLSH
   4 #define SYMBOLSH
   5 /*      Copyright (C) 1995,1996 Free Software Foundation, Inc.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2, or (at your option)
  10  * any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this software; see the file COPYING.  If not, write to
  19  * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  * As a special exception, the Free Software Foundation gives permission
  22  * for additional uses of the text contained in its release of GUILE.
  23  *
  24  * The exception is that, if you link the GUILE library with other files
  25  * to produce an executable, this does not by itself cause the
  26  * resulting executable to be covered by the GNU General Public License.
  27  * Your use of that executable is in no way restricted on account of
  28  * linking the GUILE library code into it.
  29  *
  30  * This exception does not however invalidate any other reasons why
  31  * the executable file might be covered by the GNU General Public License.
  32  *
  33  * This exception applies only to the code released by the
  34  * Free Software Foundation under the name GUILE.  If you copy
  35  * code from other Free Software Foundation releases into a copy of
  36  * GUILE, as the General Public License permits, the exception does
  37  * not apply to the code that you add in this way.  To avoid misleading
  38  * anyone as to the status of such modified files, you must delete
  39  * this exception notice from them.
  40  *
  41  * If you write modifications of your own for GUILE, it is your choice
  42  * whether to permit this exception to apply to your modifications.
  43  * If you do not wish that, delete this exception notice.
  44  */
  45 \f
  46
  47 #include "__scm.h"
  48 \f
  49
  50 extern int scm_symhash_dim;
  51
  52 #define SCM_SYMBOLP(x) (SCM_TYP7S(x)==scm_tc7_ssymbol)
  53 #define SCM_LENGTH(x) (((unsigned long)SCM_CAR(x))>>8)
  54 #define SCM_LENGTH_MAX (0xffffffL)
  55 #define SCM_SETLENGTH(x, v, t) SCM_CAR(x) = ((v)<<8)+(t)
  56 #define SCM_SETCHARS SCM_SETCDR
  57 #define SCM_CHARS(x) ((char *)(SCM_CDR(x)))
  58 #define SCM_UCHARS(x) ((unsigned char *)(SCM_CDR(x)))
  59 #define SCM_SLOTS(x) ((SCM *) (* ((SCM *)SCM_CHARS(x) - 1)))
  60 #define SCM_SYMBOL_SLOTS 5
  61 #define SCM_SYMBOL_FUNC(X) (SCM_SLOTS(X)[0])
  62 #define SCM_SYMBOL_PROPS(X) (SCM_SLOTS(X)[1])
  63 #define SCM_SYMBOL_HASH(X) (*(unsigned long*)(&SCM_SLOTS(X)[2]))
  64 #define SCM_SYMBOL_MULTI_BYTE_SCM_STRINGP(X) (*(unsigned long*)(&SCM_SLOTS(X)[3]))
  65
  66 #define SCM_ROSTRINGP(x) ((SCM_TYP7SD(x)==scm_tc7_string) || (SCM_TYP7S(x) == scm_tc7_ssymbol))
  67 #define SCM_ROCHARS(x) ((SCM_TYP7(x) == scm_tc7_substring) \
  68                         ? SCM_INUM (SCM_CADR (x)) + SCM_CHARS (SCM_CDDR (x))  \
  69                         : SCM_CHARS (x))
  70 #define SCM_ROUCHARS(x) ((SCM_TYP7(x) == scm_tc7_substring) \
  71                          ? SCM_INUM (SCM_CADR (x)) + SCM_UCHARS (SCM_CDDR (x))  \
  72                          : SCM_UCHARS (x))
  73 #define SCM_ROLENGTH(x) SCM_LENGTH (x)
  74 #define SCM_SUBSTRP(x) ((SCM_TYP7S(x) == scm_tc7_substring))
  75 #define SCM_SUBSTR_STR(x) (SCM_CDDR (x))
  76 #define SCM_SUBSTR_OFFSET(x) (SCM_CADR (x))
  77
  78
  79 \f
  80 #ifdef __STDC__
  81 extern unsigned long scm_strhash (unsigned char *str, scm_sizet len, unsigned long n);
  82 extern SCM scm_sym2vcell (SCM sym, SCM thunk, SCM definep);
  83 extern SCM scm_sym2ovcell_soft (SCM sym, SCM obarray);
  84 extern SCM scm_sym2ovcell (SCM sym, SCM obarray);
  85 extern SCM scm_intern_obarray_soft (char *name, scm_sizet len, SCM obarray, int softness);
  86 extern SCM scm_intern_obarray (char *name, scm_sizet len, SCM obarray);
  87 extern SCM scm_intern (char *name, scm_sizet len);
  88 extern SCM scm_intern0 (char * name);
  89 extern SCM scm_sysintern (char *name, SCM val);
  90 extern SCM scm_symbol_p(SCM x);
  91 extern SCM scm_symbol_to_string(SCM s);
  92 extern SCM scm_string_to_symbol(SCM s);
  93 extern SCM scm_string_to_obarray_symbol(SCM o, SCM s, SCM softp);
  94 extern SCM scm_intern_symbol(SCM o, SCM s);
  95 extern SCM scm_unintern_symbol(SCM o, SCM s);
  96 extern SCM scm_symbol_binding (SCM o, SCM s);
  97 extern SCM scm_symbol_interned_p (SCM o, SCM s);
  98 extern SCM scm_symbol_bound_p (SCM o, SCM s);
  99 extern SCM scm_symbol_set_x (SCM o, SCM s, SCM v);
 100 extern SCM scm_symbol_fref (SCM s);
 101 extern SCM scm_symbol_pref (SCM s);
 102 extern SCM scm_symbol_fset_x (SCM s, SCM val);
 103 extern SCM scm_symbol_pset_x (SCM s, SCM val);
 104 extern SCM scm_symbol_hash (SCM s);
 105 extern void scm_init_symbols (void);
 106
 107 #else /* STDC */
 108 extern unsigned long scm_strhash ();
 109 extern SCM scm_sym2vcell ();
 110 extern SCM scm_sym2ovcell_soft ();
 111 extern SCM scm_sym2ovcell ();
 112 extern SCM scm_intern_obarray_soft ();
 113 extern SCM scm_intern_obarray ();
 114 extern SCM scm_intern ();
 115 extern SCM scm_intern0 ();
 116 extern SCM scm_sysintern ();
 117 extern SCM scm_symbol_p();
 118 extern SCM scm_symbol_to_string();
 119 extern SCM scm_string_to_symbol();
 120 extern SCM scm_string_to_obarray_symbol();
 121 extern SCM scm_intern_symbol();
 122 extern SCM scm_unintern_symbol();
 123 extern SCM scm_symbol_binding ();
 124 extern SCM scm_symbol_interned_p ();
 125 extern SCM scm_symbol_bound_p ();
 126 extern SCM scm_symbol_set_x ();
 127 extern SCM scm_symbol_fref ();
 128 extern SCM scm_symbol_pref ();
 129 extern SCM scm_symbol_fset_x ();
 130 extern SCM scm_symbol_pset_x ();
 131 extern SCM scm_symbol_hash ();
 132 extern void scm_init_symbols ();
 133
 134 #endif /* STDC */
 135
 136
 137
 138
 139
 140
 141 #endif  /* SYMBOLSH */