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* libguile/smob-internal.h: New file. * libguile/Makefile.am (noinst_HEADERS): Add new file. * libguile/smob.c (scm_new_smob, scm_new_double_smob): Adapt.
98 lines
2.2 KiB
C
98 lines
2.2 KiB
C
#ifndef SCM_SMOB_INTERNAL_H
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#define SCM_SMOB_INTERNAL_H
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/* Copyright 1995-1996,1998-2001,2004,2006,2009-2012,2015,2018,2025
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Free Software Foundation, Inc.
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This file is part of Guile.
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Guile is free software: you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Guile is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with Guile. If not, see
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<https://www.gnu.org/licenses/>. */
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#include "libguile/smob.h"
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struct scm_smob
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{
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scm_t_bits tag_and_flags;
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};
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struct scm_single_smob
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{
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struct scm_smob header;
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scm_t_bits data_1;
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};
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struct scm_double_smob
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{
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struct scm_smob header;
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scm_t_bits data_1;
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scm_t_bits data_2;
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scm_t_bits data_3;
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};
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static inline int
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scm_is_smob (SCM x)
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{
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return SCM_HAS_TYP7 (x, scm_tc7_smob);
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}
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static inline struct scm_smob *
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scm_to_smob (SCM x)
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{
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if (!scm_is_smob (x))
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abort ();
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return (struct scm_smob *) SCM_UNPACK_POINTER (x);
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}
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static inline SCM
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scm_from_smob (struct scm_smob * x)
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{
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return SCM_PACK_POINTER (x);
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}
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static inline struct scm_smob_descriptor *
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scm_i_smob_descriptor (struct scm_smob *x)
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{
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return &scm_smobs[((x->tag_and_flags) & 0xff00) >> 8];
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}
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static inline int
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scm_smob_field_is_managed (const struct scm_smob_descriptor *desc, size_t i)
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{
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if (i >= 32)
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abort();
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return ((1 << i) & desc->unmanaged_fields) == 0;
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}
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static inline int
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scm_smob_field_is_unmanaged (const struct scm_smob_descriptor *desc, size_t i)
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{
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return !scm_smob_field_is_managed (desc, i);
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}
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static inline void*
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scm_smob_field_loc (struct scm_smob *smob, size_t i)
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{
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uintptr_t addr = (uintptr_t) smob;
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return (void *) (addr + sizeof (*smob) + i * sizeof (scm_t_bits));
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}
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SCM_INTERNAL void scm_i_finalize_smob (struct scm_thread *thread, SCM obj);
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#endif /* SCM_SMOB_INTERNAL_H */
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