mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 20:00:19 +02:00
9348168ed5
* libguile/boolean.c (scm_nil_p): New function. * libguile/vm-i-scheme.c (nilp, not_nilp): * libguile/vm-i-system.c (br_if_nil, br_if_not_nil): New instructions. Renumber other ops. * libguile/_scm.h (SCM_OBJCODE_MINOR_VERSION): Increment. * module/language/assembly/compile-bytecode.scm (compile-bytecode): Add support for writing `br-if-nil' and `br-if-not-nil' instructions. * module/language/assembly/disassemble.scm (code-annotation): Add `br-if-nil' and `br-if-not-nil' to the list of branch instructions. * module/language/tree-il/compile-glil.scm: Add `nil?' to `*primcall-ops*'. (flatten): Use the new branch instructions for `nil?' conditionals. * module/language/tree-il/primitives.scm: Add `nil?' to `*interesting-primitive-names*', `*effect-free-primitives', and `*effect+exception-free-primitives*'.
117 lines
3.2 KiB
C
117 lines
3.2 KiB
C
/* Copyright (C) 1995, 1996, 2000, 2001, 2006, 2008, 2009, 2010, 2011 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
|
||
*/
|
||
|
||
|
||
|
||
#ifdef HAVE_CONFIG_H
|
||
# include <config.h>
|
||
#endif
|
||
|
||
#include "libguile/_scm.h"
|
||
|
||
#include "libguile/validate.h"
|
||
#include "libguile/boolean.h"
|
||
#include "libguile/tags.h"
|
||
|
||
#include "verify.h"
|
||
|
||
|
||
|
||
/*
|
||
* These compile-time tests verify the properties needed for the
|
||
* efficient test macros defined in boolean.h, which are defined in
|
||
* terms of the SCM_MATCHES_BITS_IN_COMMON macro.
|
||
*
|
||
* See the comments preceeding the definitions of SCM_BOOL_F and
|
||
* SCM_MATCHES_BITS_IN_COMMON in tags.h for more information.
|
||
*/
|
||
verify (SCM_BITS_DIFFER_IN_EXACTLY_ONE_BIT_POSITION \
|
||
(SCM_BOOL_F_BITS, SCM_BOOL_T_BITS));
|
||
verify (SCM_BITS_DIFFER_IN_EXACTLY_ONE_BIT_POSITION \
|
||
(SCM_ELISP_NIL_BITS, SCM_BOOL_F_BITS));
|
||
verify (SCM_BITS_DIFFER_IN_EXACTLY_ONE_BIT_POSITION \
|
||
(SCM_ELISP_NIL_BITS, SCM_EOL_BITS));
|
||
verify (SCM_BITS_DIFFER_IN_EXACTLY_TWO_BIT_POSITIONS \
|
||
(SCM_ELISP_NIL_BITS, SCM_BOOL_F_BITS, SCM_BOOL_T_BITS, \
|
||
SCM_XXX_ANOTHER_BOOLEAN_DONT_USE_0));
|
||
verify (SCM_BITS_DIFFER_IN_EXACTLY_TWO_BIT_POSITIONS \
|
||
(SCM_ELISP_NIL_BITS, SCM_BOOL_F_BITS, SCM_EOL_BITS, \
|
||
SCM_XXX_ANOTHER_LISP_FALSE_DONT_USE));
|
||
|
||
SCM_DEFINE (scm_not, "not", 1, 0, 0,
|
||
(SCM x),
|
||
"Return @code{#t} iff @var{x} is false, else return @code{#f}.")
|
||
#define FUNC_NAME s_scm_not
|
||
{
|
||
return scm_from_bool (scm_is_false (x));
|
||
}
|
||
#undef FUNC_NAME
|
||
|
||
SCM_DEFINE (scm_nil_p, "nil?", 1, 0, 0,
|
||
(SCM x),
|
||
"Return @code{#t} iff @var{x} is nil, else return @code{#f}.")
|
||
#define FUNC_NAME s_scm_nil_p
|
||
{
|
||
return scm_from_bool (scm_is_lisp_false (x));
|
||
}
|
||
#undef FUNC_NAME
|
||
|
||
SCM_DEFINE (scm_boolean_p, "boolean?", 1, 0, 0,
|
||
(SCM obj),
|
||
"Return @code{#t} iff @var{obj} is @code{#t} or false.")
|
||
#define FUNC_NAME s_scm_boolean_p
|
||
{
|
||
return scm_from_bool (scm_is_bool (obj));
|
||
}
|
||
#undef FUNC_NAME
|
||
|
||
int
|
||
scm_to_bool (SCM x)
|
||
{
|
||
if (scm_is_false (x))
|
||
return 0;
|
||
else if (scm_is_eq (x, SCM_BOOL_T))
|
||
return 1;
|
||
else
|
||
scm_wrong_type_arg (NULL, 0, x);
|
||
}
|
||
|
||
/* We keep this primitive as a function in addition to the same-named macro
|
||
because some applications (e.g., GNU LilyPond 2.13.9) expect it to be a
|
||
function. */
|
||
#undef scm_is_bool
|
||
int
|
||
scm_is_bool (SCM obj)
|
||
{
|
||
/* This must match the macro definition of `scm_is_bool ()'. */
|
||
return scm_is_bool_or_nil (obj);
|
||
}
|
||
|
||
|
||
void
|
||
scm_init_boolean ()
|
||
{
|
||
#include "libguile/boolean.x"
|
||
}
|
||
|
||
|
||
/*
|
||
Local Variables:
|
||
c-file-style: "gnu"
|
||
End:
|
||
*/
|