diff options
Diffstat (limited to 'src/data.c')
| -rw-r--r-- | src/data.c | 99 |
1 files changed, 34 insertions, 65 deletions
diff --git a/src/data.c b/src/data.c index b1530688468..fae9cee7db1 100644 --- a/src/data.c +++ b/src/data.c @@ -2293,61 +2293,45 @@ bool-vector. IDX starts at 0. */) } else /* STRINGP */ { - int c; - CHECK_IMPURE (array, XSTRING (array)); if (idxval < 0 || idxval >= SCHARS (array)) args_out_of_range (array, idx); CHECK_CHARACTER (newelt); - c = XFIXNAT (newelt); + int c = XFIXNAT (newelt); + ptrdiff_t idxval_byte; + int prev_bytes; + unsigned char workbuf[MAX_MULTIBYTE_LENGTH], *p0 = workbuf, *p1; if (STRING_MULTIBYTE (array)) { - ptrdiff_t idxval_byte, nbytes; - int prev_bytes, new_bytes; - unsigned char workbuf[MAX_MULTIBYTE_LENGTH], *p0 = workbuf, *p1; - - nbytes = SBYTES (array); idxval_byte = string_char_to_byte (array, idxval); p1 = SDATA (array) + idxval_byte; prev_bytes = BYTES_BY_CHAR_HEAD (*p1); - new_bytes = CHAR_STRING (c, p0); - if (prev_bytes != new_bytes) - { - /* We must relocate the string data. */ - ptrdiff_t nchars = SCHARS (array); - USE_SAFE_ALLOCA; - unsigned char *str = SAFE_ALLOCA (nbytes); - - memcpy (str, SDATA (array), nbytes); - allocate_string_data (XSTRING (array), nchars, - nbytes + new_bytes - prev_bytes); - memcpy (SDATA (array), str, idxval_byte); - p1 = SDATA (array) + idxval_byte; - memcpy (p1 + new_bytes, str + idxval_byte + prev_bytes, - nbytes - (idxval_byte + prev_bytes)); - SAFE_FREE (); - clear_string_char_byte_cache (); - } - while (new_bytes--) - *p1++ = *p0++; } - else + else if (SINGLE_BYTE_CHAR_P (c)) { - if (! SINGLE_BYTE_CHAR_P (c)) - { - ptrdiff_t i; - - for (i = SBYTES (array) - 1; i >= 0; i--) - if (SREF (array, i) >= 0x80) - args_out_of_range (array, newelt); - /* ARRAY is an ASCII string. Convert it to a multibyte - string, and try `aset' again. */ - STRING_SET_MULTIBYTE (array); - return Faset (array, idx, newelt); - } SSET (array, idxval, c); + return newelt; } + else + { + for (ptrdiff_t i = SBYTES (array) - 1; i >= 0; i--) + if (!ASCII_CHAR_P (SREF (array, i))) + args_out_of_range (array, newelt); + /* ARRAY is an ASCII string. Convert it to a multibyte string. */ + STRING_SET_MULTIBYTE (array); + idxval_byte = idxval; + p1 = SDATA (array) + idxval_byte; + prev_bytes = 1; + } + + int new_bytes = CHAR_STRING (c, p0); + if (prev_bytes != new_bytes) + p1 = resize_string_data (array, idxval_byte, prev_bytes, new_bytes); + + do + *p1++ = *p0++; + while (--new_bytes != 0); } return newelt; @@ -3310,27 +3294,14 @@ bool_vector_spare_mask (EMACS_INT nr_bits) return (((bits_word) 1) << (nr_bits % BITS_PER_BITS_WORD)) - 1; } -/* Info about unsigned long long, falling back on unsigned long - if unsigned long long is not available. */ - -#if HAVE_UNSIGNED_LONG_LONG_INT && defined ULLONG_WIDTH -enum { ULL_WIDTH = ULLONG_WIDTH }; -# define ULL_MAX ULLONG_MAX -#else -enum { ULL_WIDTH = ULONG_WIDTH }; -# define ULL_MAX ULONG_MAX -# define count_one_bits_ll count_one_bits_l -# define count_trailing_zeros_ll count_trailing_zeros_l -#endif - /* Shift VAL right by the width of an unsigned long long. - ULL_WIDTH must be less than BITS_PER_BITS_WORD. */ + ULLONG_WIDTH must be less than BITS_PER_BITS_WORD. */ static bits_word shift_right_ull (bits_word w) { /* Pacify bogus GCC warning about shift count exceeding type width. */ - int shift = ULL_WIDTH - BITS_PER_BITS_WORD < 0 ? ULL_WIDTH : 0; + int shift = ULLONG_WIDTH - BITS_PER_BITS_WORD < 0 ? ULLONG_WIDTH : 0; return w >> shift; } @@ -3347,7 +3318,7 @@ count_one_bits_word (bits_word w) { int i = 0, count = 0; while (count += count_one_bits_ll (w), - (i += ULL_WIDTH) < BITS_PER_BITS_WORD) + (i += ULLONG_WIDTH) < BITS_PER_BITS_WORD) w = shift_right_ull (w); return count; } @@ -3478,7 +3449,7 @@ count_trailing_zero_bits (bits_word val) return count_trailing_zeros (val); if (BITS_WORD_MAX == ULONG_MAX) return count_trailing_zeros_l (val); - if (BITS_WORD_MAX == ULL_MAX) + if (BITS_WORD_MAX == ULLONG_MAX) return count_trailing_zeros_ll (val); /* The rest of this code is for the unlikely platform where bits_word differs @@ -3492,18 +3463,18 @@ count_trailing_zero_bits (bits_word val) { int count; for (count = 0; - count < BITS_PER_BITS_WORD - ULL_WIDTH; - count += ULL_WIDTH) + count < BITS_PER_BITS_WORD - ULLONG_WIDTH; + count += ULLONG_WIDTH) { - if (val & ULL_MAX) + if (val & ULLONG_MAX) return count + count_trailing_zeros_ll (val); val = shift_right_ull (val); } - if (BITS_PER_BITS_WORD % ULL_WIDTH != 0 + if (BITS_PER_BITS_WORD % ULLONG_WIDTH != 0 && BITS_WORD_MAX == (bits_word) -1) val |= (bits_word) 1 << pre_value (ULONG_MAX < BITS_WORD_MAX, - BITS_PER_BITS_WORD % ULL_WIDTH); + BITS_PER_BITS_WORD % ULLONG_WIDTH); return count + count_trailing_zeros_ll (val); } } @@ -3516,10 +3487,8 @@ bits_word_to_host_endian (bits_word val) #else if (BITS_WORD_MAX >> 31 == 1) return bswap_32 (val); -# if HAVE_UNSIGNED_LONG_LONG if (BITS_WORD_MAX >> 31 >> 31 >> 1 == 1) return bswap_64 (val); -# endif { int i; bits_word r = 0; |