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2a610be594
* libguile/array-handle.c (scm_i_register_array_implementation): (scm_i_array_implementation_for_obj): Add generic array facility, which will (in a few commits) detangle the array code. (scm_array_get_handle): Use the generic array facility. Note that scm_t_array_handle no longer has ref and set function pointers; instead it has a pointer to the array implementation. It is unlikely that code out there used these functions, however, as the supported way was through scm_array_handle_ref/set_x. (scm_array_handle_pos): Move this function here from arrays.c. (scm_array_handle_element_type): New function, returns a Scheme value representing the type of element stored in this array. * libguile/array-handle.h (scm_t_array_element_type): New enum, for generically determining the type of an array. (scm_array_handle_rank): (scm_array_handle_dims): These are now just #defines. * libguile/arrays.c: * libguile/bitvectors.c: * libguile/bytevectors.c: * libguile/srfi-4.c: * libguile/strings.c: * libguile/vectors.c: Register array implementations for all of these. * libguile/inline.h: Update for array_handle_ref/set change. * libguile/deprecated.h: Need to include arrays.h now.
129 lines
4.2 KiB
C
129 lines
4.2 KiB
C
/* classes: h_files */
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#ifndef SCM_ARRAY_HANDLE_H
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#define SCM_ARRAY_HANDLE_H
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/* Copyright (C) 1995,1996,1997,1999,2000,2001, 2004, 2006, 2008, 2009 Free Software Foundation, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 3 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#include "libguile/__scm.h"
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struct scm_t_array_handle;
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typedef SCM (*scm_i_t_array_ref) (struct scm_t_array_handle *, size_t);
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typedef void (*scm_i_t_array_set) (struct scm_t_array_handle *, size_t, SCM);
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typedef struct
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{
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scm_t_bits tag;
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scm_t_bits mask;
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scm_i_t_array_ref vref;
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scm_i_t_array_set vset;
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void (*get_handle)(SCM, struct scm_t_array_handle*);
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} scm_t_array_implementation;
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#define SCM_ARRAY_IMPLEMENTATION(tag_,mask_,vref_,vset_,handle_) \
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SCM_SNARF_INIT ({ \
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scm_t_array_implementation impl; \
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impl.tag = tag_; impl.mask = mask_; \
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impl.vref = vref_; impl.vset = vset_; \
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impl.get_handle = handle_; \
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scm_i_register_array_implementation (&impl); \
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})
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SCM_INTERNAL void scm_i_register_array_implementation (scm_t_array_implementation *impl);
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SCM_INTERNAL scm_t_array_implementation* scm_i_array_implementation_for_obj (SCM obj);
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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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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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scm_t_array_implementation *impl;
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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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} 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 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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/* See inline.h for scm_array_handle_ref and scm_array_handle_set */
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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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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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