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/* Copyright 1995-1997,1999-2001,2006,2008-2013,2017-2018,2020
Free Software Foundation, Inc.
This file is part of Guile.
Guile 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.
Guile 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 Guile. If not, see
<https://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "deprecation.h"
#include "goops.h"
#include "gsubr.h"
#include "loader.h"
#include "procprop.h"
#include "programs.h"
#include "smob.h"
#include "strings.h"
#include "struct.h"
#include "symbols.h"
#include "vectors.h"
#include "procs.h"
/* {Procedures}
*/
SCM_DEFINE (scm_procedure_p, "procedure?", 1, 0, 0,
(SCM obj),
"Return @code{#t} if @var{obj} is a procedure.")
#define FUNC_NAME s_scm_procedure_p
{
return scm_from_bool (SCM_PROGRAM_P (obj)
|| (SCM_STRUCTP (obj) && SCM_STRUCT_APPLICABLE_P (obj))
|| (SCM_HAS_TYP7 (obj, scm_tc7_smob)
&& SCM_SMOB_APPLICABLE_P (obj)));
}
#undef FUNC_NAME
SCM_DEFINE (scm_thunk_p, "thunk?", 1, 0, 0,
(SCM obj),
"Return @code{#t} if @var{obj} is a procedure that can be "
"called with zero arguments.")
#define FUNC_NAME s_scm_thunk_p
{
int req, opt, rest;
return scm_from_bool (scm_i_procedure_arity (obj, &req, &opt, &rest)
&& req == 0);
}
#undef FUNC_NAME
/* Procedure-with-setter
*/
static SCM pws_vtable;
SCM_DEFINE (scm_procedure_with_setter_p, "procedure-with-setter?", 1, 0, 0,
(SCM obj),
"Return @code{#t} if @var{obj} is a procedure with an\n"
"associated setter procedure.")
#define FUNC_NAME s_scm_procedure_with_setter_p
{
return scm_from_bool (SCM_STRUCTP (obj) && SCM_STRUCT_SETTER_P (obj));
}
#undef FUNC_NAME
SCM_DEFINE (scm_make_procedure_with_setter, "make-procedure-with-setter", 2, 0, 0,
(SCM procedure, SCM setter),
"Create a new procedure which behaves like @var{procedure}, but\n"
"with the associated setter @var{setter}.")
#define FUNC_NAME s_scm_make_procedure_with_setter
{
SCM_VALIDATE_PROC (1, procedure);
SCM_VALIDATE_PROC (2, setter);
return scm_make_struct_no_tail (pws_vtable, scm_list_2 (procedure, setter));
}
#undef FUNC_NAME
SCM_DEFINE (scm_procedure, "procedure", 1, 0, 0,
(SCM proc),
"Return the procedure of @var{proc}, which must be an\n"
"applicable struct.")
#define FUNC_NAME s_scm_procedure
{
SCM_ASSERT (SCM_STRUCTP (proc) && SCM_STRUCT_APPLICABLE_P (proc),
proc, SCM_ARG1, FUNC_NAME);
return SCM_STRUCT_PROCEDURE (proc);
}
#undef FUNC_NAME
SCM_PRIMITIVE_GENERIC (scm_setter, "setter", 1, 0, 0,
(SCM proc),
"Return the setter of @var{proc}, which must be an\n"
"applicable struct with a setter.")
#define FUNC_NAME s_scm_setter
{
if (SCM_UNLIKELY (!SCM_STRUCTP (proc)))
return scm_wta_dispatch_1 (g_scm_setter, proc, SCM_ARG1, FUNC_NAME);
if (SCM_STRUCT_SETTER_P (proc))
return SCM_STRUCT_SETTER (proc);
return scm_wta_dispatch_1 (g_scm_setter, proc, SCM_ARG1, FUNC_NAME);
}
#undef FUNC_NAME
void
scm_init_procs ()
{
pws_vtable =
scm_c_make_struct (scm_applicable_struct_with_setter_vtable_vtable,
0,
1,
SCM_UNPACK (scm_from_latin1_symbol ("pwpw")));
#include "procs.x"
}
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