X-Git-Url: https://git.hcoop.net/bpt/guile.git/blobdiff_plain/e1f8eb2bdd22fb9dd2721047472d1f018f633941..039300a1ebee116082d50d61e6b3aeafc8a741ec:/libguile/procs.h diff --git a/libguile/procs.h b/libguile/procs.h dissimilarity index 98% index 32516fe4b..a35872e3d 100644 --- a/libguile/procs.h +++ b/libguile/procs.h @@ -1,201 +1,48 @@ -/* classes: h_files */ - -#ifndef PROCSH -#define PROCSH -/* Copyright (C) 1995, 1996, 1998, 1999, 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" - - - - -/* Subrs - */ - -typedef struct scm_subr -{ - long sname; - SCM (*cproc) (); -} scm_subr; - -typedef struct scm_iproc -{ - char *scm_string; - SCM (*cproc) (); -} scm_iproc; - -typedef struct scm_dsubr -{ - long sname; - double (*dproc) (); -} scm_dsubr; - -typedef struct -{ - SCM handle; /* link back to procedure object */ - SCM name; - SCM *generic; /* 0 if no generic support - * *generic == 0 until first method - */ - SCM properties; /* procedure properties */ - SCM documentation; -} scm_subr_entry; - -#define SCM_SUBRNUM(subr) (SCM_UNPACK_CAR (subr) >> 8) -#define SCM_SET_SUBRNUM(subr, num) \ - SCM_SETCAR (subr, (num >> 8) + SCM_TYP7 (subr)) -#define SCM_SUBR_ENTRY(x) (scm_subr_table[SCM_SUBRNUM (x)]) -#define SCM_SNAME(x) (SCM_SUBR_ENTRY (x).name) -#define SCM_SUBRF(x) (((scm_subr *)(SCM2PTR(x)))->cproc) -#define SCM_DSUBRF(x) (((scm_dsubr *)(SCM2PTR(x)))->dproc) -#define SCM_CCLO_SUBR(x) (SCM_VELTS(x)[0]) - -#define SCM_SUBR_GENERIC(x) (SCM_SUBR_ENTRY (x).generic) -#define SCM_SUBR_PROPS(x) (SCM_SUBR_ENTRY (x).properties) -#define SCM_SUBR_DOC(x) (SCM_SUBR_ENTRY (x).documentation) - -/* Closures - */ - -#define SCM_CLOSUREP(x) (SCM_NIMP(x) && (SCM_TYP3 (x) == scm_tc3_closure)) -#define SCM_CLOSCAR(x) SCM_PACK (SCM_UNPACK_CAR (x) - scm_tc3_closure) -#define SCM_CODE(x) SCM_CAR (SCM_CLOSCAR (x)) -#define SCM_PROCPROPS(x) SCM_CDR (SCM_CLOSCAR (x)) -#define SCM_SETPROCPROPS(x, p) SCM_SETCDR (SCM_CLOSCAR (x), p) -#define SCM_SETCODE(x, e) (SCM_SETCAR (x, scm_cons ((e), SCM_EOL)\ - + scm_tc3_closure)) -#define SCM_ENV(x) SCM_CDR(x) -#define SCM_SETENV(x, e) SCM_SETCDR (x, e) -#define SCM_TOP_LEVEL(SCM_ENV) (SCM_NULLP(SCM_ENV) || (SCM_BOOL_T == scm_procedure_p (SCM_CAR (SCM_ENV)))) - -/* Procedure-with-setter - - Four representations for procedure-with-setters were - considered before selecting this one: - - 1. A closure where the CODE and ENV slots are used to represent - the getter and a new SETTER slot is used for the setter. The - original getter is stored as a `getter' procedure property. For - closure getters, the CODE and ENV slots contains a copy of the - getter's CODE and ENV slots. For subr getters, the CODE contains - a call to the subr. - - 2. A compiled closure with a call to the getter in the cclo - procedure. The getter and setter are stored in slots 1 and 2. - - 3. An entity (i.e. a struct with an associated procedure) with a - call to the getter in the entity procedure and the setter stored - in slot 0. The original getter is stored in slot 1. - - 4. A new primitive procedure type supported in the evaluator. The - getter and setter are stored in a GETTER and SETTER slot. A call - to this procedure type results in a retrieval of the getter and a - jump back to the correct eval dispatcher. - - Representation 4 was selected because of efficiency and - simplicity. - - Rep 1 has the advantage that there is zero penalty for closure - getters, but primitive getters will get considerable overhead - because the procedure-with-getter will be a closure which calls - the getter. - - Rep 3 has the advantage that a GOOPS accessor can be a subclass of - , but together with rep 2 it suffers from a - three level dispatch for non-GOOPS getters: - - cclo/struct --> dispatch proc --> getter - - This is because the dispatch procedure must take an extra initial - argument (cclo for rep 2, struct for rep 3). - - Rep 4 has the single disadvantage that it uses up one tc7 type - code, but the plan for uniform vectors will very likely free tc7 - codes, so this is probably no big problem. Also note that the - GETTER and SETTER slots can live directly on the heap, using the - new four-word cells. */ - -#define SCM_PROCEDURE_WITH_SETTER_P(obj) (SCM_NIMP(obj) && (SCM_TYP7 (obj) == scm_tc7_pws)) -#define SCM_PROCEDURE(obj) SCM_CELL_WORD1 (obj) -#define SCM_SETTER(obj) SCM_CELL_WORD2 (obj) - -extern scm_subr_entry *scm_subr_table; -extern int scm_subr_table_size; -extern int scm_subr_table_room; - - - -extern void scm_mark_subr_table (void); -extern void scm_free_subr_entry (SCM subr); -extern SCM scm_make_subr (const char *name, int type, SCM (*fcn) ()); -extern SCM scm_make_subr_with_generic (const char *name, - int type, - SCM (*fcn) (), - SCM *gf); -extern SCM scm_make_subr_opt (const char *name, - int type, - SCM (*fcn) (), - int set); -extern SCM scm_makcclo (SCM proc, long len); -extern SCM scm_procedure_p (SCM obj); -extern SCM scm_closure_p (SCM obj); -extern SCM scm_thunk_p (SCM obj); -extern int scm_subr_p (SCM obj); -extern SCM scm_procedure_documentation (SCM proc); -extern SCM scm_procedure_with_setter_p (SCM obj); -extern SCM scm_make_procedure_with_setter (SCM procedure, SCM setter); -extern SCM scm_procedure (SCM proc); -extern SCM scm_setter (SCM proc); -extern void scm_init_iprocs (const scm_iproc *subra, int type); -extern void scm_init_subr_table (void); -extern void scm_init_procs (void); - -#ifdef GUILE_DEBUG -extern SCM scm_make_cclo (SCM proc, SCM len); -#endif /*GUILE_DEBUG*/ - - -#endif /* PROCSH */ +/* classes: h_files */ + +#ifndef SCM_PROCS_H +#define SCM_PROCS_H + +/* Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2006, 2008, 2009, + * 2012 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 3 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" + + + +SCM_API SCM scm_procedure_p (SCM obj); +SCM_API SCM scm_thunk_p (SCM obj); +SCM_API SCM scm_procedure_documentation (SCM proc); +SCM_API SCM scm_procedure_with_setter_p (SCM obj); +SCM_API SCM scm_make_procedure_with_setter (SCM procedure, SCM setter); +SCM_API SCM scm_procedure (SCM proc); +SCM_API SCM scm_setter (SCM proc); +SCM_INTERNAL void scm_init_procs (void); + +SCM_INTERNAL SCM scm_sym_documentation; + +#endif /* SCM_PROCS_H */ + +/* + Local Variables: + c-file-style: "gnu" + End: +*/