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Diffstat (limited to 'libguile/procs.c')
| -rw-r--r-- | libguile/procs.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/libguile/procs.c b/libguile/procs.c new file mode 100644 index 000000000..6c5a5b2c4 --- /dev/null +++ b/libguile/procs.c @@ -0,0 +1,177 @@ +/* Copyright (C) 1995,1996 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, 675 Mass Ave, Cambridge, MA 02139, 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. + */ + + +#include <stdio.h> +#include "_scm.h" + + + + + +/* {Procedures} + */ + +#ifdef __STDC__ +SCM +scm_make_subr_opt (char *name, int type, SCM (*fcn) (), int set) +#else +SCM +scm_make_subr_opt (name, type, fcn, set) + char *name; + int type; + SCM (*fcn) (); + int set; +#endif +{ + SCM symcell; + long tmp; + register SCM z; + symcell = scm_sysintern (name, SCM_UNDEFINED); + tmp = ((((SCM_CELLPTR) (SCM_CAR (symcell))) - scm_heap_org) << 8); + if ((tmp >> 8) != ((SCM_CELLPTR) (SCM_CAR (symcell)) - scm_heap_org)) + tmp = 0; + SCM_NEWCELL (z); + SCM_SUBRF (z) = fcn; + SCM_CAR (z) = tmp + type; + if (set) + SCM_CDR (symcell) = z; + return z; +} + + +#ifdef __STDC__ +SCM +scm_make_subr (char *name, int type, SCM (*fcn) ()) +#else +SCM +scm_make_subr (name, type, fcn) + char *name; + int type; + SCM (*fcn) (); +#endif +{ + return scm_make_subr_opt (name, type, fcn, 1); +} + +#ifdef CCLO +#ifdef __STDC__ +SCM +scm_makcclo (SCM proc, long len) +#else +SCM +scm_makcclo (proc, len) + SCM proc; + long len; +#endif +{ + SCM s; + SCM_NEWCELL (s); + SCM_DEFER_INTS; + SCM_SETCHARS (s, scm_must_malloc (len * sizeof (SCM), "compiled-closure")); + SCM_SETLENGTH (s, len, scm_tc7_cclo); + while (--len) + SCM_VELTS (s)[len] = SCM_UNSPECIFIED; + SCM_CCLO_SUBR (s) = proc; + SCM_ALLOW_INTS; + return s; +} +#endif + + + +SCM_PROC(s_procedure_p, "procedure?", 1, 0, 0, scm_procedure_p); +#ifdef __STDC__ +SCM +scm_procedure_p (SCM obj) +#else +SCM +scm_procedure_p (obj) + SCM obj; +#endif +{ + if (SCM_NIMP (obj)) + switch (SCM_TYP7 (obj)) + { + case scm_tcs_closures: + case scm_tc7_contin: + case scm_tcs_subrs: +#ifdef CCLO + case scm_tc7_cclo: +#endif + return SCM_BOOL_T; + default: + return SCM_BOOL_F; + } + return SCM_BOOL_F; +} + + +#ifdef __STDC__ +void +scm_init_iprocs(scm_iproc *subra, int type) +#else +void +scm_init_iprocs(subra, type) + scm_iproc *subra; + int type; +#endif +{ + for(;subra->scm_string; subra++) + scm_make_subr(subra->scm_string, + type, + subra->cproc); +} + + + + +#ifdef __STDC__ +void +scm_init_procs (void) +#else +void +scm_init_procs () +#endif +{ +#include "procs.x" +} + |