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(scm_list_to_typed_array): Allow the specification of the
upper bound as well. This is needed for empty arrays. (l2ra): Give needed number of elements in error message. (scm_i_print_array): Print length information for arrays that need it. (scm_i_read_array): Parse it.
This commit is contained in:
Marius Vollmer
parent
66d3378432
commit
2caaadd1c2
1 changed files with 138 additions and 71 deletions
209
libguile/unif.c
209
libguile/unif.c
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@ -764,7 +764,7 @@ SCM_DEFINE (scm_make_typed_array, "make-typed-array", 2, 0, 1,
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while (k--)
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{
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s[k].inc = rlen;
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SCM_ASSERT_RANGE (1, bounds, s[k].lbnd <= s[k].ubnd);
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SCM_ASSERT_RANGE (1, bounds, s[k].lbnd <= s[k].ubnd + 1);
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rlen = (s[k].ubnd - s[k].lbnd + 1) * s[k].inc;
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}
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@ -2332,45 +2332,59 @@ SCM_DEFINE (scm_array_to_list, "array->list", 1, 0, 0,
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static void l2ra (SCM lst, scm_t_array_handle *handle, ssize_t pos, size_t k);
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SCM_DEFINE (scm_list_to_typed_array, "list->typed-array", 3, 0, 0,
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(SCM type, SCM ndim, SCM lst),
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(SCM type, SCM shape, SCM lst),
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"Return an array of the type @var{type}\n"
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"with elements the same as those of @var{lst}.\n"
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"\n"
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"The argument @var{ndim} determines the number of dimensions\n"
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"of the array. It is either an exact integer, giving the\n"
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"number directly, or a list of exact integers, whose length\n"
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"specifies the number of dimensions and each element is the\n"
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"lower index bound of its dimension.")
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"The argument @var{shape} determines the number of dimensions\n"
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"of the array and their shape. It is either an exact integer,\n"
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"giving the\n"
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"number of dimensions directly, or a list whose length\n"
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"specifies the number of dimensions and each element specified\n"
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"the lower and optionally the upper bound of the corresponding\n"
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"dimension.\n"
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"When the element is list of two elements, these elements\n"
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"give the lower and upper bounds. When it is an exact\n"
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"integer, it gives only the lower bound.")
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#define FUNC_NAME s_scm_list_to_typed_array
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{
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SCM shape, row;
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SCM row;
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SCM ra;
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scm_t_array_handle handle;
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shape = SCM_EOL;
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row = lst;
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if (scm_is_integer (ndim))
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if (scm_is_integer (shape))
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{
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size_t k = scm_to_size_t (ndim);
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size_t k = scm_to_size_t (shape);
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shape = SCM_EOL;
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while (k-- > 0)
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{
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shape = scm_cons (scm_length (row), shape);
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if (k > 0)
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if (k > 0 && !scm_is_null (row))
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row = scm_car (row);
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}
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}
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else
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{
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SCM shape_spec = shape;
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shape = SCM_EOL;
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while (1)
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{
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shape = scm_cons (scm_list_2 (scm_car (ndim),
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scm_sum (scm_sum (scm_car (ndim),
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scm_length (row)),
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scm_from_int (-1))),
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shape);
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ndim = scm_cdr (ndim);
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if (scm_is_pair (ndim))
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row = scm_car (row);
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SCM spec = scm_car (shape_spec);
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if (scm_is_pair (spec))
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shape = scm_cons (spec, shape);
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else
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shape = scm_cons (scm_list_2 (spec,
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scm_sum (scm_sum (spec,
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scm_length (row)),
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scm_from_int (-1))),
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shape);
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shape_spec = scm_cdr (shape_spec);
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if (scm_is_pair (shape_spec))
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{
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if (!scm_is_null (row))
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row = scm_car (row);
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}
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else
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break;
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}
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@ -2405,8 +2419,10 @@ l2ra (SCM lst, scm_t_array_handle *handle, ssize_t pos, size_t k)
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{
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scm_t_array_dim *dim = scm_array_handle_dims (handle) + k;
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ssize_t inc = dim->inc;
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size_t n = 1 + dim->ubnd - dim->lbnd;
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size_t len = 1 + dim->ubnd - dim->lbnd, n;
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char *errmsg = NULL;
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n = len;
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while (n > 0 && scm_is_pair (lst))
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{
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l2ra (SCM_CAR (lst), handle, pos, k + 1);
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@ -2415,11 +2431,12 @@ l2ra (SCM lst, scm_t_array_handle *handle, ssize_t pos, size_t k)
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n -= 1;
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}
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if (n != 0)
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scm_misc_error (NULL, "too few elements for array dimension ~a",
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scm_list_1 (scm_from_ulong (k)));
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errmsg = "too few elements for array dimension ~a, need ~a";
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if (!scm_is_null (lst))
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scm_misc_error (NULL, "too many elements for array dimension ~a",
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scm_list_1 (scm_from_ulong (k)));
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errmsg = "too many elements for array dimension ~a, want ~a";
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if (errmsg)
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scm_misc_error (NULL, errmsg, scm_list_2 (scm_from_ulong (k),
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scm_from_size_t (len)));
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}
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}
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@ -2485,6 +2502,7 @@ scm_i_print_array (SCM array, SCM port, scm_print_state *pstate)
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SCM v = SCM_ARRAY_V (array);
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unsigned long base = SCM_ARRAY_BASE (array);
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long i;
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int print_lbnds = 0, zero_size = 0, print_lens = 0;
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scm_putc ('#', port);
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if (ndim != 1 || dim_specs[0].lbnd != 0)
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@ -2499,14 +2517,29 @@ scm_i_print_array (SCM array, SCM port, scm_print_state *pstate)
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scm_puts ("?", port);
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for (i = 0; i < ndim; i++)
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if (dim_specs[i].lbnd != 0)
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{
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if (dim_specs[i].lbnd != 0)
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print_lbnds = 1;
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if (dim_specs[i].ubnd - dim_specs[i].lbnd + 1 == 0)
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zero_size = 1;
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else if (zero_size)
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print_lens = 1;
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}
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if (print_lbnds || print_lens)
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for (i = 0; i < ndim; i++)
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{
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for (i = 0; i < ndim; i++)
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if (print_lbnds)
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{
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scm_putc ('@', port);
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scm_uintprint (dim_specs[i].lbnd, 10, port);
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scm_intprint (dim_specs[i].lbnd, 10, port);
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}
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if (print_lens)
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{
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scm_putc (':', port);
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scm_intprint (dim_specs[i].ubnd - dim_specs[i].lbnd + 1,
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10, port);
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}
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break;
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}
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if (ndim == 0)
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@ -2615,6 +2648,31 @@ tag_to_type (const char *tag, SCM port)
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return scm_from_locale_symbol (tag);
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}
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static int
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read_decimal_integer (SCM port, int c, ssize_t *resp)
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{
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ssize_t sign = 1;
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ssize_t res = 0;
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int got_it = 0;
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if (c == '-')
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{
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sign = -1;
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c = scm_getc (port);
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}
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while ('0' <= c && c <= '9')
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{
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res = 10*res + c-'0';
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got_it = 1;
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c = scm_getc (port);
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}
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if (got_it)
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*resp = res;
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return c;
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}
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SCM
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scm_i_read_array (SCM port, int c)
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{
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@ -2623,7 +2681,7 @@ scm_i_read_array (SCM port, int c)
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char tag[80];
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int tag_len;
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SCM lower_bounds = SCM_BOOL_F, elements;
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SCM shape = SCM_BOOL_F, elements;
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/* XXX - shortcut for ordinary vectors. Shouldn't be necessary but
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the array code can not deal with zero-length dimensions yet, and
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@ -2653,55 +2711,55 @@ scm_i_read_array (SCM port, int c)
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goto continue_reading_tag;
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}
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/* Read rank. */
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rank = 0;
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got_rank = 0;
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while ('0' <= c && c <= '9')
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{
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rank = 10*rank + c-'0';
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got_rank = 1;
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c = scm_getc (port);
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}
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if (!got_rank)
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rank = 1;
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/* Read rank.
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*/
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rank = 1;
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c = read_decimal_integer (port, c, &rank);
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if (rank < 0)
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scm_i_input_error (NULL, port, "array rank must be non-negative",
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SCM_EOL);
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/* Read tag. */
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/* Read tag.
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*/
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tag_len = 0;
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continue_reading_tag:
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while (c != EOF && c != '(' && c != '@' && tag_len < 80)
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while (c != EOF && c != '(' && c != '@' && c != ':' && tag_len < 80)
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{
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tag[tag_len++] = c;
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c = scm_getc (port);
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}
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tag[tag_len] = '\0';
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/* Read lower bounds. */
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if (c == '@')
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/* Read shape.
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*/
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if (c == '@' || c == ':')
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{
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lower_bounds = SCM_EOL;
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shape = SCM_EOL;
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do
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{
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/* Yeah, right, we should use some ready-made integer parsing
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routine for this...
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*/
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ssize_t lbnd = 0, len = 0;
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SCM s;
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long lbnd = 0;
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long sign = 1;
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if (c == '@')
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{
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c = scm_getc (port);
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c = read_decimal_integer (port, c, &lbnd);
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}
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c = scm_getc (port);
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if (c == '-')
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s = scm_from_ssize_t (lbnd);
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if (c == ':')
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{
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sign = -1;
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c = scm_getc (port);
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c = read_decimal_integer (port, c, &len);
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s = scm_list_2 (s, scm_from_ssize_t (lbnd+len-1));
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}
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while ('0' <= c && c <= '9')
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{
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lbnd = 10*lbnd + c-'0';
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c = scm_getc (port);
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}
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lower_bounds = scm_cons (scm_from_long (sign*lbnd), lower_bounds);
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} while (c == '@');
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shape = scm_cons (s, shape);
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} while (c == '@' || c == ':');
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shape = scm_reverse_x (shape, SCM_EOL);
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}
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/* Read nested lists of elements.
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@ -2713,24 +2771,33 @@ scm_i_read_array (SCM port, int c)
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scm_ungetc (c, port);
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elements = scm_read (port);
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if (scm_is_false (lower_bounds))
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lower_bounds = scm_from_size_t (rank);
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else if (scm_ilength (lower_bounds) != rank)
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scm_i_input_error (NULL, port,
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"the number of lower bounds must match the array rank",
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SCM_EOL);
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if (scm_is_false (shape))
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shape = scm_from_size_t (rank);
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else if (scm_ilength (shape) != rank)
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scm_i_input_error
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(NULL, port,
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"the number of shape specifications must match the array rank",
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SCM_EOL);
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/* Handle special print syntax of rank zero arrays; see
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scm_i_print_array for a rationale.
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*/
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if (rank == 0)
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elements = scm_car (elements);
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{
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if (!scm_is_pair (elements))
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scm_i_input_error (NULL, port,
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"too few elements in array literal, need 1",
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SCM_EOL);
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if (!scm_is_null (SCM_CDR (elements)))
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scm_i_input_error (NULL, port,
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"too many elements in array literal, want 1",
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SCM_EOL);
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elements = SCM_CAR (elements);
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}
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/* Construct array.
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*/
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return scm_list_to_typed_array (tag_to_type (tag, port),
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lower_bounds,
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elements);
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return scm_list_to_typed_array (tag_to_type (tag, port), shape, elements);
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}
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int
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