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Update to newest recommended license notices from the FSF. Everything stays LGPLv3+ except guile-readline which is GPLv3+.
133 lines
4.3 KiB
C
133 lines
4.3 KiB
C
#ifndef SCM_ARRAY_HANDLE_H
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#define SCM_ARRAY_HANDLE_H
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/* Copyright 1995-1997,1999-2001,2004,2006,2008-2009,2011,2013-2014,2018
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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/error.h"
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#include "libguile/inline.h"
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#include "libguile/numbers.h"
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typedef SCM (*scm_t_vector_ref) (SCM, size_t);
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typedef void (*scm_t_vector_set) (SCM, size_t, SCM);
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typedef struct scm_t_array_dim
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{
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ssize_t lbnd;
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ssize_t ubnd;
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ssize_t inc;
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} scm_t_array_dim;
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typedef enum
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{
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SCM_ARRAY_ELEMENT_TYPE_SCM = 0, /* SCM values */
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SCM_ARRAY_ELEMENT_TYPE_CHAR = 1, /* characters */
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SCM_ARRAY_ELEMENT_TYPE_BIT = 2, /* packed numeric values */
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SCM_ARRAY_ELEMENT_TYPE_VU8 = 3,
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SCM_ARRAY_ELEMENT_TYPE_U8 = 4,
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SCM_ARRAY_ELEMENT_TYPE_S8 = 5,
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SCM_ARRAY_ELEMENT_TYPE_U16 = 6,
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SCM_ARRAY_ELEMENT_TYPE_S16 = 7,
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SCM_ARRAY_ELEMENT_TYPE_U32 = 8,
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SCM_ARRAY_ELEMENT_TYPE_S32 = 9,
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SCM_ARRAY_ELEMENT_TYPE_U64 = 10,
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SCM_ARRAY_ELEMENT_TYPE_S64 = 11,
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SCM_ARRAY_ELEMENT_TYPE_F32 = 12,
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SCM_ARRAY_ELEMENT_TYPE_F64 = 13,
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SCM_ARRAY_ELEMENT_TYPE_C32 = 14,
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SCM_ARRAY_ELEMENT_TYPE_C64 = 15,
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SCM_ARRAY_ELEMENT_TYPE_LAST = 15
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} scm_t_array_element_type;
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SCM_INTERNAL SCM scm_i_array_element_types[];
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typedef struct scm_t_array_handle {
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SCM array;
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/* `Base' is an offset into elements or writable_elements, corresponding to
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the first element in the array. It would be nicer just to adjust the
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elements/writable_elements pointer, but we can't because that element might
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not even be byte-addressable, as is the case with bitvectors. A nicer
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solution would be, well, nice.
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*/
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size_t base;
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size_t ndims; /* ndims == the rank of the array */
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scm_t_array_dim *dims;
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scm_t_array_dim dim0;
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scm_t_array_element_type element_type;
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const void *elements;
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void *writable_elements;
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/* The backing store for the array, and its accessors. */
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SCM vector;
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scm_t_vector_ref vref;
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scm_t_vector_set vset;
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} scm_t_array_handle;
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#define scm_array_handle_rank(h) ((h)->ndims)
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#define scm_array_handle_dims(h) ((h)->dims)
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SCM_API void scm_array_get_handle (SCM array, scm_t_array_handle *h);
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SCM_API ssize_t scm_array_handle_pos (scm_t_array_handle *h, SCM indices);
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SCM_API ssize_t scm_array_handle_pos_1 (scm_t_array_handle *h, ssize_t idx0);
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SCM_API ssize_t scm_array_handle_pos_2 (scm_t_array_handle *h, ssize_t idx0, ssize_t idx1);
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SCM_API SCM scm_array_handle_element_type (scm_t_array_handle *h);
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SCM_API void scm_array_handle_release (scm_t_array_handle *h);
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SCM_API const SCM* scm_array_handle_elements (scm_t_array_handle *h);
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SCM_API SCM* scm_array_handle_writable_elements (scm_t_array_handle *h);
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SCM_INLINE SCM scm_array_handle_ref (scm_t_array_handle *h, ssize_t pos);
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SCM_INLINE void scm_array_handle_set (scm_t_array_handle *h, ssize_t pos, SCM val);
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#if SCM_CAN_INLINE || defined SCM_INLINE_C_IMPLEMENTING_INLINES
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/* Either inlining, or being included from inline.c. */
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SCM_INLINE_IMPLEMENTATION SCM
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scm_array_handle_ref (scm_t_array_handle *h, ssize_t p)
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{
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if (SCM_UNLIKELY (p < 0 && ((size_t)-p) > h->base))
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/* catch overflow */
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scm_out_of_range (NULL, scm_from_ssize_t (p));
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/* perhaps should catch overflow here too */
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return h->vref (h->vector, h->base + p);
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}
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SCM_INLINE_IMPLEMENTATION void
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scm_array_handle_set (scm_t_array_handle *h, ssize_t p, SCM v)
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{
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if (SCM_UNLIKELY (p < 0 && ((size_t)-p) > h->base))
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/* catch overflow */
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scm_out_of_range (NULL, scm_from_ssize_t (p));
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/* perhaps should catch overflow here too */
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h->vset (h->vector, h->base + p, v);
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}
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#endif
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SCM_INTERNAL void scm_init_array_handle (void);
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#endif /* SCM_ARRAY_HANDLE_H */
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