diff options
Diffstat (limited to 'libguile/array-handle.h')
| -rw-r--r-- | libguile/array-handle.h | 75 |
1 files changed, 66 insertions, 9 deletions
diff --git a/libguile/array-handle.h b/libguile/array-handle.h index 21e1f8436..caf9cefbf 100644 --- a/libguile/array-handle.h +++ b/libguile/array-handle.h @@ -27,6 +27,36 @@ +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); + + + + typedef struct scm_t_array_dim { ssize_t lbnd; @@ -34,29 +64,56 @@ typedef struct scm_t_array_dim 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 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); /* See inline.h for scm_array_handle_ref and scm_array_handle_set */ |