-/* classes: h_files */
-
-#ifndef SYMBOLSH
-#define SYMBOLSH
-/* Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this software; see the file COPYING. If not, write to
- * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
- * Boston, MA 02111-1307 USA
- *
- * As a special exception, the Free Software Foundation gives permission
- * for additional uses of the text contained in its release of GUILE.
- *
- * The exception is that, if you link the GUILE library with other files
- * to produce an executable, this does not by itself cause the
- * resulting executable to be covered by the GNU General Public License.
- * Your use of that executable is in no way restricted on account of
- * linking the GUILE library code into it.
- *
- * This exception does not however invalidate any other reasons why
- * the executable file might be covered by the GNU General Public License.
- *
- * This exception applies only to the code released by the
- * Free Software Foundation under the name GUILE. If you copy
- * code from other Free Software Foundation releases into a copy of
- * GUILE, as the General Public License permits, the exception does
- * not apply to the code that you add in this way. To avoid misleading
- * anyone as to the status of such modified files, you must delete
- * this exception notice from them.
- *
- * If you write modifications of your own for GUILE, it is your choice
- * whether to permit this exception to apply to your modifications.
- * If you do not wish that, delete this exception notice. */
-\f
-
-#include "libguile/__scm.h"
-\f
-
-extern int scm_symhash_dim;
-
-/* SCM_LENGTH(SYM) is the length of SYM's name in characters, and
- SCM_CHARS(SYM) is the address of the first character of SYM's name.
-
- Beyond that, there are two kinds of symbols: ssymbols and msymbols,
- distinguished by the 'S' bit in the type.
-
- Ssymbols are just uniquified strings. They have a length, chars,
- and that's it. They use the scm_tc7_ssymbol tag (S bit clear).
-
- Msymbols are symbols with extra slots. These slots hold a property
- list and a function value (for Emacs Lisp compatibility), a hash
- code, and a flag to indicate whether their name contains multibyte
- characters. They use the scm_tc7_msymbol tag.
-
- We'd like SCM_CHARS to work on msymbols just as it does on
- ssymbols, so we'll have it point to the symbol's name as usual, and
- store a pointer to the slots just before the name in memory. Thus,
- you have to do some casting and pointer arithmetic to find the
- slots; see the SCM_SLOTS macro.
-
- In practice, the slots always live just before the pointer to them.
- So why not ditch the pointer, and use negative indices to refer to
- the slots? That's a good question; ask the author. I think it was
- the cognac. */
-
-#define SCM_SYMBOLP(x) (SCM_TYP7S(x)==scm_tc7_ssymbol)
-#define SCM_LENGTH(x) (((unsigned long)SCM_CAR(x))>>8)
-#define SCM_LENGTH_MAX (0xffffffL)
-#define SCM_SETLENGTH(x, v, t) SCM_SETCAR((x), ((v)<<8)+(t))
-#define SCM_SETCHARS SCM_SETCDR
-#define SCM_CHARS(x) ((char *)(SCM_CDR(x)))
-#define SCM_UCHARS(x) ((unsigned char *)(SCM_CDR(x)))
-#define SCM_SLOTS(x) ((SCM *) (* ((SCM *)SCM_CHARS(x) - 1)))
-#define SCM_SYMBOL_SLOTS 5
-#define SCM_SYMBOL_FUNC(X) (SCM_SLOTS(X)[0])
-#define SCM_SYMBOL_PROPS(X) (SCM_SLOTS(X)[1])
-#define SCM_SYMBOL_HASH(X) (*(unsigned long*)(&SCM_SLOTS(X)[2]))
-#define SCM_SYMBOL_MULTI_BYTE_STRINGP(X) (*(unsigned long*)(&SCM_SLOTS(X)[3]))
-
-#define SCM_ROSTRINGP(x) ((SCM_TYP7SD(x)==scm_tc7_string) || (SCM_TYP7S(x) == scm_tc7_ssymbol))
-#define SCM_ROCHARS(x) ((SCM_TYP7(x) == scm_tc7_substring) \
- ? SCM_INUM (SCM_CADR (x)) + SCM_CHARS (SCM_CDDR (x)) \
- : SCM_CHARS (x))
-#define SCM_ROUCHARS(x) ((SCM_TYP7(x) == scm_tc7_substring) \
- ? SCM_INUM (SCM_CADR (x)) + SCM_UCHARS (SCM_CDDR (x)) \
- : SCM_UCHARS (x))
-#define SCM_ROLENGTH(x) SCM_LENGTH (x)
-#define SCM_SUBSTRP(x) ((SCM_TYP7S(x) == scm_tc7_substring))
-#define SCM_SUBSTR_STR(x) (SCM_CDDR (x))
-#define SCM_SUBSTR_OFFSET(x) (SCM_CADR (x))
-
-#define SCM_COERCE_SUBSTR(x) { if (SCM_SUBSTRP (x)) \
- x = scm_makfromstr (SCM_ROCHARS (x), \
- SCM_ROLENGTH (x), 0); }
-
-\f
-
-extern unsigned long scm_strhash SCM_P ((unsigned char *str, scm_sizet len, unsigned long n));
-extern SCM scm_sym2vcell SCM_P ((SCM sym, SCM thunk, SCM definep));
-extern SCM scm_sym2ovcell_soft SCM_P ((SCM sym, SCM obarray));
-extern SCM scm_sym2ovcell SCM_P ((SCM sym, SCM obarray));
-extern SCM scm_intern_obarray_soft SCM_P ((char *name, scm_sizet len, SCM obarray, int softness));
-extern SCM scm_intern_obarray SCM_P ((char *name, scm_sizet len, SCM obarray));
-extern SCM scm_intern SCM_P ((char *name, scm_sizet len));
-extern SCM scm_intern0 SCM_P ((char * name));
-extern SCM scm_sysintern SCM_P ((char *name, SCM val));
-extern SCM scm_sysintern0 SCM_P ((char *name));
-extern SCM scm_symbol_value0 SCM_P ((char *name));
-extern SCM scm_symbol_p SCM_P ((SCM x));
-extern SCM scm_symbol_to_string SCM_P ((SCM s));
-extern SCM scm_string_to_symbol SCM_P ((SCM s));
-extern SCM scm_string_to_obarray_symbol SCM_P ((SCM o, SCM s, SCM softp));
-extern SCM scm_intern_symbol SCM_P ((SCM o, SCM s));
-extern SCM scm_unintern_symbol SCM_P ((SCM o, SCM s));
-extern SCM scm_symbol_binding SCM_P ((SCM o, SCM s));
-extern SCM scm_symbol_interned_p SCM_P ((SCM o, SCM s));
-extern SCM scm_symbol_bound_p SCM_P ((SCM o, SCM s));
-extern SCM scm_symbol_set_x SCM_P ((SCM o, SCM s, SCM v));
-extern SCM scm_symbol_fref SCM_P ((SCM s));
-extern SCM scm_symbol_pref SCM_P ((SCM s));
-extern SCM scm_symbol_fset_x SCM_P ((SCM s, SCM val));
-extern SCM scm_symbol_pset_x SCM_P ((SCM s, SCM val));
-extern SCM scm_symbol_hash SCM_P ((SCM s));
-extern void scm_init_symbols SCM_P ((void));
-
-extern int scm_can_use_top_level_lookup_closure_var;
-
-#endif /* SYMBOLSH */
+/* classes: h_files */
+
+#ifndef SYMBOLSH
+#define SYMBOLSH
+/* Copyright (C) 1995,1996,1997,1998, 2000 Free Software Foundation, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307 USA
+ *
+ * As a special exception, the Free Software Foundation gives permission
+ * for additional uses of the text contained in its release of GUILE.
+ *
+ * The exception is that, if you link the GUILE library with other files
+ * to produce an executable, this does not by itself cause the
+ * resulting executable to be covered by the GNU General Public License.
+ * Your use of that executable is in no way restricted on account of
+ * linking the GUILE library code into it.
+ *
+ * This exception does not however invalidate any other reasons why
+ * the executable file might be covered by the GNU General Public License.
+ *
+ * This exception applies only to the code released by the
+ * Free Software Foundation under the name GUILE. If you copy
+ * code from other Free Software Foundation releases into a copy of
+ * GUILE, as the General Public License permits, the exception does
+ * not apply to the code that you add in this way. To avoid misleading
+ * anyone as to the status of such modified files, you must delete
+ * this exception notice from them.
+ *
+ * If you write modifications of your own for GUILE, it is your choice
+ * whether to permit this exception to apply to your modifications.
+ * If you do not wish that, delete this exception notice. */
+
+/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
+ gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
+\f
+
+#include "libguile/__scm.h"
+\f
+
+extern int scm_symhash_dim;
+
+/* SCM_SYMBOL_LENGTH(SYM) is the length of SYM's name in characters, and
+ * SCM_SYMBOL_CHARS(SYM) is the address of the first character of SYM's name.
+ */
+
+#define SCM_SYMBOLP(x) (SCM_NIMP (x) && (SCM_TYP7 (x) == scm_tc7_symbol))
+#define SCM_SYMBOL_UCHARS(x) ((unsigned char *) (SCM_CELL_WORD_1 (x)))
+#define SCM_SYMBOL_CHARS(x) ((char *) (SCM_CELL_WORD_1 (x)))
+#define SCM_SYMBOL_LENGTH(x) (((unsigned long) SCM_CELL_WORD_0 (x)) >> 8)
+
+#define SCM_LENGTH_MAX (0xffffffL)
+#define SCM_LENGTH(x) (((unsigned long) SCM_CELL_WORD_0 (x)) >> 8)
+#define SCM_SETLENGTH(x, v, t) (SCM_SET_CELL_WORD_0 ((x), ((v) << 8) + (t)))
+
+#define SCM_SETCHARS(x, v) (SCM_SET_CELL_WORD_1 ((x), (scm_bits_t) (v)))
+
+#define SCM_PROP_SLOTS(X) (SCM_CELL_WORD_3 (X))
+#define SCM_SET_PROP_SLOTS(X, v) (SCM_SET_CELL_WORD_3 ((X), (v)))
+#define SCM_SYMBOL_FUNC(X) (SCM_CAR (SCM_CELL_WORD_3 (X)))
+#define SCM_SET_SYMBOL_FUNC(X, v) (SCM_SETCAR (SCM_CELL_WORD_3 (X), (v)))
+#define SCM_SYMBOL_PROPS(X) (SCM_CDR (SCM_CELL_WORD_3 (X)))
+#define SCM_SET_SYMBOL_PROPS(X, v) (SCM_SETCDR (SCM_CELL_WORD_3 (X), (v)))
+#define SCM_SYMBOL_HASH(X) (SCM_CELL_WORD_2 (X))
+#define SCM_SET_SYMBOL_HASH(X, v) (SCM_SET_CELL_WORD_2 ((X), (v)))
+
+#define SCM_ROSTRINGP(x) (SCM_NIMP(x) && ((SCM_TYP7S(x)==scm_tc7_string) \
+ || (SCM_TYP7(x) == scm_tc7_symbol)))
+#define SCM_ROCHARS(x) ((SCM_TYP7 (x) == scm_tc7_substring) \
+ ? (SCM_INUM (SCM_CADR (x)) + SCM_STRING_CHARS (SCM_CDDR (x))) \
+ : ((SCM_TYP7 (x) == scm_tc7_string) \
+ ? SCM_STRING_CHARS (x) \
+ : SCM_SYMBOL_CHARS (x)))
+#define SCM_ROUCHARS(x) ((SCM_TYP7 (x) == scm_tc7_substring) \
+ ? (SCM_INUM (SCM_CADR (x)) + SCM_STRING_UCHARS (SCM_CDDR (x))) \
+ : ((SCM_TYP7 (x) == scm_tc7_string) \
+ ? SCM_STRING_UCHARS (x) \
+ : SCM_SYMBOL_UCHARS (x)))
+#define SCM_ROLENGTH(x) SCM_LENGTH (x)
+#define SCM_SUBSTRP(x) (SCM_NIMP (x) && (SCM_TYP7 (x) == scm_tc7_substring))
+#define SCM_SUBSTR_STR(x) (SCM_CDDR (x))
+#define SCM_SUBSTR_OFFSET(x) (SCM_CADR (x))
+
+#define SCM_COERCE_SUBSTR(x) { if (SCM_SUBSTRP (x)) \
+ x = scm_makfromstr (SCM_ROCHARS (x), \
+ SCM_STRING_LENGTH (x), 0); }
+
+\f
+
+extern unsigned long scm_string_hash (const unsigned char *str, scm_sizet len);
+extern SCM scm_sym2vcell (SCM sym, SCM thunk, SCM definep);
+extern SCM scm_sym2ovcell_soft (SCM sym, SCM obarray);
+extern SCM scm_sym2ovcell (SCM sym, SCM obarray);
+extern SCM scm_intern_obarray_soft (const char *name, scm_sizet len, SCM obarray, unsigned int softness);
+extern SCM scm_intern_obarray (const char *name, scm_sizet len, SCM obarray);
+extern SCM scm_intern (const char *name, scm_sizet len);
+extern SCM scm_intern0 (const char *name);
+extern SCM scm_sysintern (const char *name, SCM val);
+extern SCM scm_sysintern0 (const char *name);
+extern SCM scm_sysintern0_no_module_lookup (const char *name);
+extern SCM scm_symbol_value0 (const char *name);
+extern SCM scm_symbol_p (SCM x);
+extern SCM scm_symbol_to_string (SCM s);
+extern SCM scm_string_to_symbol (SCM s);
+extern SCM scm_string_to_obarray_symbol (SCM o, SCM s, SCM softp);
+extern SCM scm_intern_symbol (SCM o, SCM s);
+extern SCM scm_unintern_symbol (SCM o, SCM s);
+extern SCM scm_symbol_binding (SCM o, SCM s);
+extern SCM scm_symbol_interned_p (SCM o, SCM s);
+extern SCM scm_symbol_bound_p (SCM o, SCM s);
+extern SCM scm_symbol_set_x (SCM o, SCM s, SCM v);
+extern SCM scm_symbol_fref (SCM s);
+extern SCM scm_symbol_pref (SCM s);
+extern SCM scm_symbol_fset_x (SCM s, SCM val);
+extern SCM scm_symbol_pset_x (SCM s, SCM val);
+extern SCM scm_symbol_hash (SCM s);
+extern SCM scm_builtin_bindings (void);
+extern SCM scm_builtin_weak_bindings (void);
+extern SCM scm_gensym (SCM prefix);
+extern SCM scm_gentemp (SCM prefix, SCM obarray);
+extern void scm_init_symbols (void);
+
+\f
+
+#if (SCM_DEBUG_DEPRECATED == 0)
+
+#define SCM_CHARS(x) ((char *) (SCM_CELL_WORD_1 (x)))
+#define SCM_UCHARS(x) ((unsigned char *) (SCM_CELL_WORD_1 (x)))
+#define SCM_SLOPPY_SUBSTRP(x) (SCM_SUBSTRP (x))
+#define scm_strhash(str, len, n) (scm_string_hash ((str), (len)) % (n))
+
+#endif /* SCM_DEBUG_DEPRECATED == 0 */
+
+#endif /* SYMBOLSH */
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/
HCoop / bpt / guile.git / blobdiff