1 /* Copyright (C) 1995, 1996, 1997, 1999, 2000, 2001, 2006, 2008, 2009,
2 * 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public License
6 * as published by the Free Software Foundation; either version 3 of
7 * the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
26 #include "libguile/_scm.h"
28 #include "libguile/strings.h"
29 #include "libguile/vectors.h"
30 #include "libguile/smob.h"
31 #include "libguile/deprecation.h"
33 #include "libguile/validate.h"
34 #include "libguile/procs.h"
35 #include "libguile/procprop.h"
36 #include "libguile/objcodes.h"
37 #include "libguile/programs.h"
45 SCM_DEFINE (scm_procedure_p
, "procedure?", 1, 0, 0,
47 "Return @code{#t} if @var{obj} is a procedure.")
48 #define FUNC_NAME s_scm_procedure_p
50 return scm_from_bool (SCM_PROGRAM_P (obj
)
51 || SCM_RTL_PROGRAM_P (obj
)
52 || (SCM_STRUCTP (obj
) && SCM_STRUCT_APPLICABLE_P (obj
))
53 || (SCM_HAS_TYP7 (obj
, scm_tc7_smob
)
54 && SCM_SMOB_APPLICABLE_P (obj
)));
58 SCM_DEFINE (scm_thunk_p
, "thunk?", 1, 0, 0,
60 "Return @code{#t} if @var{obj} is a thunk.")
61 #define FUNC_NAME s_scm_thunk_p
64 return scm_from_bool (scm_i_procedure_arity (obj
, &req
, &opt
, &rest
)
70 /* Procedure-with-setter
73 static SCM pws_vtable
;
76 SCM_DEFINE (scm_procedure_with_setter_p
, "procedure-with-setter?", 1, 0, 0,
78 "Return @code{#t} if @var{obj} is a procedure with an\n"
79 "associated setter procedure.")
80 #define FUNC_NAME s_scm_procedure_with_setter_p
82 return scm_from_bool (SCM_STRUCTP (obj
) && SCM_STRUCT_SETTER_P (obj
));
86 SCM_DEFINE (scm_make_procedure_with_setter
, "make-procedure-with-setter", 2, 0, 0,
87 (SCM procedure
, SCM setter
),
88 "Create a new procedure which behaves like @var{procedure}, but\n"
89 "with the associated setter @var{setter}.")
90 #define FUNC_NAME s_scm_make_procedure_with_setter
93 SCM_VALIDATE_PROC (1, procedure
);
94 SCM_VALIDATE_PROC (2, setter
);
95 ret
= scm_make_struct (pws_vtable
, SCM_INUM0
,
96 scm_list_2 (procedure
, setter
));
98 /* don't use procedure_name, because don't care enough to do a reverse
100 name
= scm_procedure_property (procedure
, scm_sym_name
);
101 if (scm_is_true (name
))
102 scm_set_procedure_property_x (ret
, scm_sym_name
, name
);
107 SCM_DEFINE (scm_procedure
, "procedure", 1, 0, 0,
109 "Return the procedure of @var{proc}, which must be an\n"
110 "applicable struct.")
111 #define FUNC_NAME s_scm_procedure
113 SCM_ASSERT (SCM_STRUCTP (proc
) && SCM_STRUCT_APPLICABLE_P (proc
),
114 proc
, SCM_ARG1
, FUNC_NAME
);
115 return SCM_STRUCT_PROCEDURE (proc
);
119 SCM_PRIMITIVE_GENERIC (scm_setter
, "setter", 1, 0, 0,
121 "Return the setter of @var{proc}, which must be an\n"
122 "applicable struct with a setter.")
123 #define FUNC_NAME s_scm_setter
125 if (SCM_UNLIKELY (!SCM_STRUCTP (proc
)))
126 return scm_wta_dispatch_1 (g_scm_setter
, proc
, SCM_ARG1
, FUNC_NAME
);
127 if (SCM_STRUCT_SETTER_P (proc
))
128 return SCM_STRUCT_SETTER (proc
);
129 if (SCM_PUREGENERICP (proc
)
130 && SCM_IS_A_P (proc
, scm_class_generic_with_setter
))
131 /* FIXME: might not be an accessor */
132 return SCM_GENERIC_SETTER (proc
);
133 return scm_wta_dispatch_1 (g_scm_setter
, proc
, SCM_ARG1
, FUNC_NAME
);
134 return SCM_BOOL_F
; /* not reached */
143 scm_c_make_struct (scm_applicable_struct_with_setter_vtable_vtable
,
146 SCM_UNPACK (scm_from_latin1_symbol ("pwpw")));
148 #include "libguile/procs.x"