• Paul Eggert's avatar
    Simplify and port recent bool vector changes. · df5b4930
    Paul Eggert authored
    * configure.ac (BITSIZEOF_SIZE_T, SIZEOF_SIZE_T):
    New symbols to configure.
    * src/alloc.c (ROUNDUP): Move here from lisp.h, since it's now used
    only in this file.  Use a more-efficient implementation if the
    second argument is a power of 2.
    (ALIGN): Rewrite in terms of ROUNDUP.  Make it a function.
    Remove no-longer-necessary compile-time checks.
    (bool_vector_exact_payload_bytes): New function.
    (bool_vector_payload_bytes): Remove 2nd arg; callers that need
    exact payload changed to call the new function.  Do not assume
    that the arg or result fits in ptrdiff_t.
    (bool_vector_fill): New function.
    (Fmake_bool_vector): Use it.  Don't assume bit counts fit
    in ptrdiff_t.
    (vroundup_ct): Don't assume arg fits in size_t.
    * src/category.c (SET_CATEGORY_SET): Remove.  All callers now just
    invoke set_category_set.
    (set_category_set): 2nd arg is now EMACS_INT and 3rd is now bool.
    All callers changed.  Use bool_vector_set.
    * src/category.h (XCATEGORY_SET): Remove; no longer needed.
    (CATEGORY_MEMBER): Now a function.  Rewrite in terms of
    * src/data.c (Faref): Use bool_vector_ref.
    (Faset): Use bool_vector_set.
    (bits_word_to_host_endian): Don't assume you can shift by CHAR_BIT.
    (Fbool_vector_not, Fbool_vector_count_matches)
    (Fbool_vector_count_matches_at): Don't assume CHAR_BIT == 8.
    * src/fns.c (concat): Use bool_vector_ref.
    (Ffillarray): Use bool_vector_fill.
    (mapcar1): Use bool_vector_ref.
    (sxhash_bool_vector): Hash words, not bytes.
    * src/lisp.h (BOOL_VECTOR_BITS_PER_CHAR): Now a macro as well as
    a constant, since it's now used in #if.
    (bits_word, BITS_WORD_MAX, BITS_PER_BITS_WORD): Fall back on
    unsigned char on unusual architectures, so that we no longer
    assume that the number of bits per bits_word is a power of two or
    is a multiple of 8 or of CHAR_BIT.
    (Qt): Add forward decl.
    (struct Lisp_Bool_Vector): Don't assume EMACS_INT is aligned
    at least as strictly as bits_word.
    (bool_vector_data, bool_vector_uchar_data): New accessors.
    All data structure accesses changed to use them.
    (bool_vector_words, bool_vector_bitref, bool_vector_ref)
    (bool_vector_set): New functions.
    (bool_vector_fill): New decl.
    (ROUNDUP): Move to alloc.c as described above.
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