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0134abce74
Also give bytevectors a private type (a struct). * libguile/bytevectors.h (SCM_BYTEVECTOR_HEADER_SIZE): Remove. (SCM_BYTEVECTOR_LENGTH): (SCM_BYTEVECTOR_CONTENTS): Proxy to the C accessors. (SCM_BYTEVECTOR_PARENT): Remove from public API. (SCM_BYTEVECTOR_P, SCM_VALIDATE_BYTEVECTOR): Make public. (scm_c_bytevector_contents): New function. * libguile/bytevectors-internal.h: New file. * libguile/Makefile.am (noinst_HEADERS): Add new file. * libguile/bytevectors.c: * libguile/array-handle.c: * libguile/arrays.c: * libguile/foreign.c: * libguile/goops.c: * libguile/init.c: * libguile/loader.c: * libguile/print.c: * libguile/r6rs-ports.c: * libguile/srfi-4.c: * libguile/strings.c: Adapt to use bytevectors-internal.h as needed, and sometimes to use the internal bytevector type.
125 lines
3.3 KiB
C
125 lines
3.3 KiB
C
#ifndef SCM_BYTEVECTORS_INTERNAL_H
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#define SCM_BYTEVECTORS_INTERNAL_H
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/* Copyright 2009, 2011, 2018, 2023, 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/bytevectors.h>
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#include <libguile/error.h>
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#include <libguile/uniform.h>
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struct scm_bytevector
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{
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scm_t_bits tag_flags_and_element_type;
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size_t length;
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signed char *contents;
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SCM parent;
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signed char inline_contents[];
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};
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static inline struct scm_bytevector *
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scm_to_bytevector (SCM x)
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{
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if (!SCM_BYTEVECTOR_P (x))
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abort ();
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return (struct scm_bytevector *) SCM_UNPACK_POINTER (x);
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}
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static inline SCM
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scm_from_bytevector (struct scm_bytevector *bv)
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{
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return SCM_PACK_POINTER (bv);
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}
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enum scm_bytevector_flags
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{
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SCM_F_BYTEVECTOR_IMMUTABLE = 0x80UL,
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SCM_F_BYTEVECTOR_CONTIGUOUS = 0x100UL
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};
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static inline signed char*
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scm_bytevector_contents (struct scm_bytevector *bv)
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{
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return bv->contents;
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}
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static inline SCM
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scm_bytevector_parent (struct scm_bytevector *bv)
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{
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return bv->parent;
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}
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static inline int
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scm_is_mutable_bytevector (SCM x)
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{
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scm_t_bits tag = SCM_CELL_TYPE (x);
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return (tag & (0x7f | SCM_F_BYTEVECTOR_IMMUTABLE)) == scm_tc7_bytevector;
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}
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static inline scm_t_array_element_type
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scm_bytevector_element_type (struct scm_bytevector *bv)
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{
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return bv->tag_flags_and_element_type >> 16;
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}
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static inline int
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scm_bytevector_is_contiguous (struct scm_bytevector *bv)
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{
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return bv->tag_flags_and_element_type & SCM_F_BYTEVECTOR_CONTIGUOUS;
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}
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static inline int
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scm_bytevector_is_immutable (struct scm_bytevector *bv)
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{
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return bv->tag_flags_and_element_type & SCM_F_BYTEVECTOR_IMMUTABLE;
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}
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static inline size_t
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scm_bytevector_type_size (struct scm_bytevector *bv)
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{
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return scm_i_array_element_type_sizes[scm_bytevector_element_type (bv)]/8;
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}
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static inline size_t
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scm_bytevector_typed_length (struct scm_bytevector *bv)
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{
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return bv->length / scm_bytevector_type_size (bv);
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}
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SCM_INTERNAL struct scm_bytevector*
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scm_i_make_typed_bytevector (size_t, scm_t_array_element_type);
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SCM_INTERNAL SCM scm_c_take_typed_bytevector (signed char *, size_t,
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scm_t_array_element_type, SCM);
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SCM_INTERNAL void scm_bootstrap_bytevectors (void);
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SCM_INTERNAL void scm_init_bytevectors (void);
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SCM_INTERNAL SCM scm_i_native_endianness;
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SCM_INTERNAL SCM scm_c_take_gc_bytevector (signed char *, size_t, SCM);
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SCM_INTERNAL int scm_i_print_bytevector (SCM, SCM, scm_print_state *);
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SCM_INTERNAL struct scm_bytevector*
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scm_c_shrink_bytevector (struct scm_bytevector*, size_t);
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SCM_INTERNAL void scm_i_bytevector_generalized_set_x (SCM, size_t, SCM);
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SCM_INTERNAL SCM scm_null_bytevector;
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#endif /* SCM_BYTEVECTORS_INTERNAL_H */
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