diff options
Diffstat (limited to 'libguile/procprop.c')
-rw-r--r-- | libguile/procprop.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/libguile/procprop.c b/libguile/procprop.c new file mode 100644 index 000000000..a984008db --- /dev/null +++ b/libguile/procprop.c @@ -0,0 +1,155 @@ +/* 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" + + + +static SCM +scm_stand_in_scm_proc(proc) + SCM proc; +{ + SCM answer; + answer = scm_assoc (proc, scm_stand_in_procs); + if (answer == SCM_BOOL_F) + { + answer = scm_closure (scm_listify (SCM_EOL, SCM_BOOL_F, SCM_UNDEFINED), + SCM_EOL); + scm_stand_in_procs = scm_cons (scm_cons (proc, answer), + scm_stand_in_procs); + } + else + answer = SCM_CDR (answer); + return answer; +} + +SCM_PROC(s_procedure_properties, "procedure-properties", 1, 0, 0, scm_procedure_properties); +#ifdef __STDC__ +SCM +scm_procedure_properties (SCM proc) +#else +SCM +scm_procedure_properties (proc) + SCM proc; +#endif +{ + SCM_ASSERT (scm_procedure_p (proc), proc, SCM_ARG1, s_procedure_properties); + if (!(SCM_NIMP (proc) && SCM_CLOSUREP (proc))) + proc = scm_stand_in_scm_proc(proc); + return SCM_PROCPROPS (proc); +} + +SCM_PROC(s_set_procedure_properties_x, "set-procedure-properties!", 2, 0, 0, scm_set_procedure_properties_x); +#ifdef __STDC__ +SCM +scm_set_procedure_properties_x (SCM proc, SCM new_val) +#else +SCM +scm_set_procedure_properties_x (proc, new_val) + SCM proc; + SCM new_val; +#endif +{ + if (!(SCM_NIMP (proc) && SCM_CLOSUREP (proc))) + proc = scm_stand_in_scm_proc(proc); + SCM_ASSERT (SCM_NIMP (proc) && SCM_CLOSUREP (proc), proc, SCM_ARG1, s_set_procedure_properties_x); + SCM_PROCPROPS (proc) = new_val; + return SCM_UNSPECIFIED; +} + +SCM_PROC(s_procedure_property, "procedure-property", 2, 0, 0, scm_procedure_property); +#ifdef __STDC__ +SCM +scm_procedure_property (SCM p, SCM k) +#else +SCM +scm_procedure_property (p, k) + SCM p; + SCM k; +#endif +{ + SCM assoc; + if (!(SCM_NIMP (p) && SCM_CLOSUREP (p))) + p = scm_stand_in_scm_proc(p); + SCM_ASSERT (scm_procedure_p (p), p, SCM_ARG1, s_procedure_property); + assoc = scm_sloppy_assq (k, SCM_PROCPROPS (p)); + return (SCM_NIMP (assoc) ? SCM_CDR (assoc) : SCM_BOOL_F); +} + +SCM_PROC(s_set_procedure_property_x, "set-procedure-property!", 3, 0, 0, scm_set_procedure_property_x); +#ifdef __STDC__ +SCM +scm_set_procedure_property_x (SCM p, SCM k, SCM v) +#else +SCM +scm_set_procedure_property_x (p, k, v) + SCM p; + SCM k; + SCM v; +#endif +{ + SCM assoc; + if (!(SCM_NIMP (p) && SCM_CLOSUREP (p))) + p = scm_stand_in_scm_proc(p); + SCM_ASSERT (SCM_NIMP (p) && SCM_CLOSUREP (p), p, SCM_ARG1, s_set_procedure_property_x); + assoc = scm_sloppy_assq (k, SCM_PROCPROPS (p)); + if (SCM_NIMP (assoc)) + SCM_SETCDR (assoc, v); + else + SCM_PROCPROPS (p) = scm_acons (k, v, SCM_PROCPROPS (p)); + return SCM_UNSPECIFIED; +} + + + +#ifdef __STDC__ +void +scm_init_procprop (void) +#else +void +scm_init_procprop () +#endif +{ +#include "procprop.x" +} + |