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author | Andy Wingo <wingo@pobox.com> | 2009-07-19 15:04:40 +0200 |
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committer | Andy Wingo <wingo@pobox.com> | 2009-07-19 15:15:40 +0200 |
commit | 2a610be59412a9d633a373c6f6ec4d4794c40fd8 (patch) | |
tree | eef959741b074fabac5456d1b0c6b9eaa80194f3 /libguile/vectors.c | |
parent | 2fa901a51f62da8a01112aefbf687530f4bff160 (diff) | |
download | guile-2a610be59412a9d633a373c6f6ec4d4794c40fd8.tar.gz |
add generic array implementation facility
* 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.
Diffstat (limited to 'libguile/vectors.c')
-rw-r--r-- | libguile/vectors.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/libguile/vectors.c b/libguile/vectors.c index 93f110a21..2d77f158b 100644 --- a/libguile/vectors.c +++ b/libguile/vectors.c @@ -656,6 +656,41 @@ SCM_DEFINE (scm_generalized_vector_to_list, "generalized-vector->list", 1, 0, 0, } #undef FUNC_NAME +static SCM +vector_handle_ref (scm_t_array_handle *h, size_t idx) +{ + if (idx > h->dims[0].ubnd) + scm_out_of_range ("vector-handle-ref", scm_from_size_t (idx)); + return ((SCM*)h->elements)[idx]; +} + +static void +vector_handle_set (scm_t_array_handle *h, size_t idx, SCM val) +{ + if (idx > h->dims[0].ubnd) + scm_out_of_range ("vector-handle-set!", scm_from_size_t (idx)); + ((SCM*)h->writable_elements)[idx] = val; +} + +static void +vector_get_handle (SCM v, scm_t_array_handle *h) +{ + h->array = v; + h->ndims = 1; + h->dims = &h->dim0; + h->dim0.lbnd = 0; + h->dim0.ubnd = SCM_I_VECTOR_LENGTH (v) - 1; + h->dim0.inc = 1; + h->element_type = SCM_ARRAY_ELEMENT_TYPE_SCM; + h->elements = h->writable_elements = SCM_I_VECTOR_WELTS (v); +} + +SCM_ARRAY_IMPLEMENTATION (scm_tc7_vector, 0x7f & ~2, + vector_handle_ref, vector_handle_set, + vector_get_handle); +SCM_ARRAY_IMPLEMENTATION (scm_tc7_wvect, 0x7f & ~2, + vector_handle_ref, vector_handle_set, + vector_get_handle); void scm_init_vectors () |