X-Git-Url: https://git.hcoop.net/bpt/guile.git/blobdiff_plain/cfaba30ebda14dfd559498d510319eef5c4f817d..fbf0c8c7b194202e01338f8b5324126bf73af4c9:/libguile/symbols.h diff --git a/libguile/symbols.h b/libguile/symbols.h dissimilarity index 62% index d592833ba..94ebc3c20 100644 --- a/libguile/symbols.h +++ b/libguile/symbols.h @@ -1,145 +1,147 @@ -/* 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_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_ROLENGTH (x), 0); } - - - -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 ((const char *name, scm_sizet len, SCM obarray, int softness)); -extern SCM scm_intern_obarray SCM_P ((const char *name, scm_sizet len, SCM obarray)); -extern SCM scm_intern SCM_P ((const char *name, scm_sizet len)); -extern SCM scm_intern0 SCM_P ((const char * name)); -extern SCM scm_sysintern SCM_P ((const char *name, SCM val)); -extern SCM scm_sysintern0 SCM_P ((const char *name)); -extern SCM scm_sysintern0_no_module_lookup SCM_P ((const char *name)); -extern SCM scm_symbol_value0 SCM_P ((const 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 SCM scm_builtin_bindings SCM_P ((void)); -extern SCM scm_builtin_weak_bindings SCM_P ((void)); -extern SCM scm_gensym SCM_P ((SCM name, SCM obarray)); -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 */ + + +#include "libguile/__scm.h" + + +/* 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_LENGTH(x) (((unsigned long) SCM_CELL_WORD_0 (x)) >> 8) +#define SCM_SET_SYMBOL_LENGTH(s, l) (SCM_SET_CELL_WORD_0 ((s), ((l) << 8) + scm_tc7_symbol)) +#define SCM_SYMBOL_CHARS(x) ((char *) (SCM_CELL_WORD_1 (x))) +#define SCM_SET_SYMBOL_CHARS(s, c) (SCM_SET_CELL_WORD_1 ((s), (c))) +#define SCM_SYMBOL_HASH(X) ((unsigned long) SCM_CELL_WORD_2 (X)) +#define SCM_SET_SYMBOL_HASH(X, v) (SCM_SET_CELL_WORD_2 ((X), (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))) + + + +extern SCM scm_mem2symbol (const char*, scm_sizet); +extern SCM scm_str2symbol (const char*); + +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_gensym (SCM prefix); +extern SCM scm_gentemp (SCM prefix, SCM obarray); +extern void scm_symbols_prehistory (void); +extern void scm_init_symbols (void); + + + +#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_SETCHARS(x, v) (SCM_SET_CELL_WORD_1 ((x), (scm_bits_t) (v))) +#define SCM_SLOPPY_SUBSTRP(x) (SCM_SUBSTRP (x)) +#define SCM_SUBSTR_STR(x) (SCM_CDDR (x)) +#define SCM_SUBSTR_OFFSET(x) (SCM_CADR (x)) +#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_ROSTRINGP(x) (SCM_NIMP(x) && ((SCM_TYP7S(x)==scm_tc7_string) \ + || (SCM_TYP7(x) == scm_tc7_symbol))) +#define SCM_ROLENGTH(x) SCM_LENGTH (x) +#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) \ + : (unsigned char *) SCM_SYMBOL_CHARS (x))) +#define SCM_SUBSTRP(x) (SCM_NIMP (x) && (SCM_TYP7 (x) == scm_tc7_substring)) +#define SCM_COERCE_SUBSTR(x) SCM_STRING_COERCE_0TERMINATION_X (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: +*/