#ifndef SCM_ARRAY_HANDLE_H
#define SCM_ARRAY_HANDLE_H
-/* Copyright (C) 1995,1996,1997,1999,2000,2001, 2004, 2006, 2008, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 1995, 1996, 1997, 1999, 2000, 2001, 2004, 2006,
+ * 2008, 2009, 2011, 2013 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
\f
#include "libguile/__scm.h"
+#include "libguile/error.h"
+#include "libguile/numbers.h"
+
+\f
+
+struct scm_t_array_handle;
+
+typedef SCM (*scm_i_t_array_ref) (struct scm_t_array_handle *, size_t);
+typedef void (*scm_i_t_array_set) (struct scm_t_array_handle *, size_t, SCM);
+
+typedef struct
+{
+ scm_t_bits tag;
+ scm_t_bits mask;
+ scm_i_t_array_ref vref;
+ scm_i_t_array_set vset;
+ void (*get_handle)(SCM, struct scm_t_array_handle*);
+} scm_t_array_implementation;
+
+#define SCM_ARRAY_IMPLEMENTATION(tag_,mask_,vref_,vset_,handle_) \
+ SCM_SNARF_INIT ({ \
+ scm_t_array_implementation impl; \
+ impl.tag = tag_; impl.mask = mask_; \
+ impl.vref = vref_; impl.vset = vset_; \
+ impl.get_handle = handle_; \
+ scm_i_register_array_implementation (&impl); \
+ })
+
+
+SCM_INTERNAL void scm_i_register_array_implementation (scm_t_array_implementation *impl);
+SCM_INTERNAL scm_t_array_implementation* scm_i_array_implementation_for_obj (SCM obj);
+
\f
ssize_t inc;
} scm_t_array_dim;
-struct scm_t_array_handle;
+typedef enum
+ {
+ SCM_ARRAY_ELEMENT_TYPE_SCM = 0, /* SCM values */
+ SCM_ARRAY_ELEMENT_TYPE_CHAR = 1, /* characters */
+ SCM_ARRAY_ELEMENT_TYPE_BIT = 2, /* packed numeric values */
+ SCM_ARRAY_ELEMENT_TYPE_VU8 = 3,
+ SCM_ARRAY_ELEMENT_TYPE_U8 = 4,
+ SCM_ARRAY_ELEMENT_TYPE_S8 = 5,
+ SCM_ARRAY_ELEMENT_TYPE_U16 = 6,
+ SCM_ARRAY_ELEMENT_TYPE_S16 = 7,
+ SCM_ARRAY_ELEMENT_TYPE_U32 = 8,
+ SCM_ARRAY_ELEMENT_TYPE_S32 = 9,
+ SCM_ARRAY_ELEMENT_TYPE_U64 = 10,
+ SCM_ARRAY_ELEMENT_TYPE_S64 = 11,
+ SCM_ARRAY_ELEMENT_TYPE_F32 = 12,
+ SCM_ARRAY_ELEMENT_TYPE_F64 = 13,
+ SCM_ARRAY_ELEMENT_TYPE_C32 = 14,
+ SCM_ARRAY_ELEMENT_TYPE_C64 = 15,
+ SCM_ARRAY_ELEMENT_TYPE_LAST = 15
+ } scm_t_array_element_type;
+
+SCM_INTERNAL SCM scm_i_array_element_types[];
-typedef SCM (*scm_i_t_array_ref) (struct scm_t_array_handle *, ssize_t);
-typedef void (*scm_i_t_array_set) (struct scm_t_array_handle *, ssize_t, SCM);
typedef struct scm_t_array_handle {
SCM array;
+ scm_t_array_implementation *impl;
+ /* `Base' is an offset into elements or writable_elements, corresponding to
+ the first element in the array. It would be nicer just to adjust the
+ elements/writable_elements pointer, but we can't because that element might
+ not even be byte-addressable, as is the case with bitvectors. A nicer
+ solution would be, well, nice.
+ */
size_t base;
+ size_t ndims; /* ndims == the rank of the array */
scm_t_array_dim *dims;
scm_t_array_dim dim0;
- scm_i_t_array_ref ref;
- scm_i_t_array_set set;
+ scm_t_array_element_type element_type;
const void *elements;
void *writable_elements;
} scm_t_array_handle;
+#define scm_array_handle_rank(h) ((h)->ndims)
+#define scm_array_handle_dims(h) ((h)->dims)
+
SCM_API void scm_array_get_handle (SCM array, scm_t_array_handle *h);
-SCM_API size_t scm_array_handle_rank (scm_t_array_handle *h);
-SCM_API scm_t_array_dim *scm_array_handle_dims (scm_t_array_handle *h);
SCM_API ssize_t scm_array_handle_pos (scm_t_array_handle *h, SCM indices);
-SCM_API const SCM *scm_array_handle_elements (scm_t_array_handle *h);
-SCM_API SCM *scm_array_handle_writable_elements (scm_t_array_handle *h);
+SCM_API ssize_t scm_array_handle_pos_1 (scm_t_array_handle *h, ssize_t idx0);
+SCM_API ssize_t scm_array_handle_pos_2 (scm_t_array_handle *h, ssize_t idx0, ssize_t idx1);
+SCM_API SCM scm_array_handle_element_type (scm_t_array_handle *h);
SCM_API void scm_array_handle_release (scm_t_array_handle *h);
+SCM_API const SCM* scm_array_handle_elements (scm_t_array_handle *h);
+SCM_API SCM* scm_array_handle_writable_elements (scm_t_array_handle *h);
+
+
+SCM_INLINE SCM scm_array_handle_ref (scm_t_array_handle *h, ssize_t pos);
+SCM_INLINE void scm_array_handle_set (scm_t_array_handle *h, ssize_t pos, SCM val);
+
+#if SCM_CAN_INLINE || defined SCM_INLINE_C_IMPLEMENTING_INLINES
+/* Either inlining, or being included from inline.c. */
+
+SCM_INLINE_IMPLEMENTATION SCM
+scm_array_handle_ref (scm_t_array_handle *h, ssize_t p)
+{
+ if (SCM_UNLIKELY (p < 0 && ((size_t)-p) > h->base))
+ /* catch overflow */
+ scm_out_of_range (NULL, scm_from_ssize_t (p));
+ /* perhaps should catch overflow here too */
+ return h->impl->vref (h, h->base + p);
+}
+
+SCM_INLINE_IMPLEMENTATION void
+scm_array_handle_set (scm_t_array_handle *h, ssize_t p, SCM v)
+{
+ if (SCM_UNLIKELY (p < 0 && ((size_t)-p) > h->base))
+ /* catch overflow */
+ scm_out_of_range (NULL, scm_from_ssize_t (p));
+ /* perhaps should catch overflow here too */
+ h->impl->vset (h, h->base + p, v);
+}
+
+#endif
-/* See inline.h for scm_array_handle_ref and scm_array_handle_set */
SCM_INTERNAL void scm_init_array_handle (void);
HCoop / bpt / guile.git / blobdiff