X-Git-Url: http://git.hcoop.net/bpt/guile.git/blobdiff_plain/7866a09b5b355ea277d2dd780b24e98f647329d4..b81a5bf26d9980be1dfd9bd9c477b41c503d5124:/libguile/symbols.h diff --git a/libguile/symbols.h b/libguile/symbols.h dissimilarity index 96% index 5495d61e4..f70d65578 100644 --- a/libguile/symbols.h +++ b/libguile/symbols.h @@ -1,146 +1,76 @@ -/* classes: h_files */ - -#ifndef SYMBOLSH -#define SYMBOLSH -/* Copyright (C) 1995,1996,1997,1998 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 */ - - -#include "libguile/__scm.h" - - -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), and a hash - code. 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_NIMP(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 4 -#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_ROSTRINGP(x) (SCM_NIMP(x) && ((SCM_TYP7S(x)==scm_tc7_string) \ - || (SCM_TYP7S(x) == scm_tc7_ssymbol))) -#define SCM_ROCHARS(x) ((char *)((SCM_TYP7(x) == scm_tc7_substring) \ - ? SCM_INUM (SCM_CADR (x)) + SCM_CHARS (SCM_CDDR (x)) \ - : SCM_CHARS (x))) -#define SCM_ROUCHARS(x) ((unsigned char *) ((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_SLOPPY_SUBSTRP(x) (SCM_TYP7(x) == scm_tc7_substring) -#define SCM_SUBSTRP(x) (SCM_NIMP(x) && SCM_SLOPPY_SUBSTRP(x)) -#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); } - - - -extern unsigned long scm_strhash (unsigned char *str, scm_sizet len, unsigned long n); -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, 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 name, SCM obarray); -extern void scm_init_symbols (void); - -extern int scm_can_use_top_level_lookup_closure_var; - -#endif /* SYMBOLSH */ +/* classes: h_files */ + +#ifndef SCM_SYMBOLS_H +#define SCM_SYMBOLS_H + +/* Copyright (C) 1995,1996,1997,1998,2000,2001, 2003, 2004, 2006 Free Software Foundation, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + + + +#include "libguile/__scm.h" + + +#define scm_is_symbol(x) (!SCM_IMP (x) \ + && (SCM_TYP7 (x) == scm_tc7_symbol)) +#define scm_i_symbol_hash(x) ((unsigned long) SCM_CELL_WORD_2 (x)) +#define scm_i_symbol_is_interned(x) \ + (!(SCM_CELL_WORD_0 (x) & SCM_I_F_SYMBOL_UNINTERNED)) + +#define SCM_I_F_SYMBOL_UNINTERNED 0x100 + + + +#ifdef GUILE_DEBUG +SCM_API SCM scm_sys_symbols (void); +#endif + +SCM_API SCM scm_symbol_p (SCM x); +SCM_API SCM scm_symbol_interned_p (SCM sym); +SCM_API SCM scm_make_symbol (SCM name); +SCM_API SCM scm_symbol_to_string (SCM s); +SCM_API SCM scm_string_to_symbol (SCM s); +SCM_API SCM scm_string_ci_to_symbol (SCM s); + +SCM_API SCM scm_symbol_fref (SCM s); +SCM_API SCM scm_symbol_pref (SCM s); +SCM_API SCM scm_symbol_fset_x (SCM s, SCM val); +SCM_API SCM scm_symbol_pset_x (SCM s, SCM val); + +SCM_API SCM scm_symbol_hash (SCM s); +SCM_API SCM scm_gensym (SCM prefix); + +SCM_API SCM scm_from_locale_symbol (const char *str); +SCM_API SCM scm_from_locale_symboln (const char *str, size_t len); +SCM_API SCM scm_take_locale_symbol (char *sym); +SCM_API SCM scm_take_locale_symboln (char *sym, size_t len); + +/* internal functions. */ + +SCM_API unsigned long scm_i_hash_symbol (SCM obj, unsigned long n, + void *closure); + +SCM_API void scm_symbols_prehistory (void); +SCM_API void scm_init_symbols (void); + +#endif /* SCM_SYMBOLS_H */ + +/* + Local Variables: + c-file-style: "gnu" + End: +*/