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comparison src/buffer.h @ 185:3d6bfa290dbd r20-3b19

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Import from CVS: tag r20-3b19
author cvs
date Mon, 13 Aug 2007 09:55:28 +0200
parents e121b013d1f0
children 41ff10fd062f
comparison
equal deleted inserted replaced
184:bcd2674570bf 185:3d6bfa290dbd
74 extent-parent and extent-children. 74 extent-parent and extent-children.
75 */ 75 */
76 76
77 struct buffer_text 77 struct buffer_text
78 { 78 {
79 Bufbyte *beg; /* Actual address of buffer contents. */ 79 Bufbyte *beg; /* Actual address of buffer contents. */
80 Bytind gpt; /* Index of gap in buffer. */ 80 Bytind gpt; /* Index of gap in buffer. */
81 Bytind z; /* Index of end of buffer. */ 81 Bytind z; /* Index of end of buffer. */
82 Bufpos bufz; /* Equivalent as a Bufpos. */ 82 Bufpos bufz; /* Equivalent as a Bufpos. */
83 int gap_size; /* Size of buffer's gap */ 83 int gap_size; /* Size of buffer's gap */
84 int end_gap_size; /* Size of buffer's end gap */ 84 int end_gap_size; /* Size of buffer's end gap */
625 place where we would normally put them. */ 625 place where we would normally put them. */
626 626
627 /* None of these are lvalues. Use the settor macros below to change 627 /* None of these are lvalues. Use the settor macros below to change
628 the positions. */ 628 the positions. */
629 629
630 /* Beginning of buffer. */ 630 /* Beginning of buffer. */
631 #define BI_BUF_BEG(buf) ((Bytind) 1) 631 #define BI_BUF_BEG(buf) ((Bytind) 1)
632 #define BUF_BEG(buf) ((Bufpos) 1) 632 #define BUF_BEG(buf) ((Bufpos) 1)
633 633
634 /* Beginning of accessible range of buffer. */ 634 /* Beginning of accessible range of buffer. */
635 #define BI_BUF_BEGV(buf) ((buf)->begv + 0) 635 #define BI_BUF_BEGV(buf) ((buf)->begv + 0)
636 #define BUF_BEGV(buf) ((buf)->bufbegv + 0) 636 #define BUF_BEGV(buf) ((buf)->bufbegv + 0)
637 637
638 /* End of accessible range of buffer. */ 638 /* End of accessible range of buffer. */
639 #define BI_BUF_ZV(buf) ((buf)->zv + 0) 639 #define BI_BUF_ZV(buf) ((buf)->zv + 0)
640 #define BUF_ZV(buf) ((buf)->bufzv + 0) 640 #define BUF_ZV(buf) ((buf)->bufzv + 0)
641 641
642 /* End of buffer. */ 642 /* End of buffer. */
643 #define BI_BUF_Z(buf) ((buf)->text->z + 0) 643 #define BI_BUF_Z(buf) ((buf)->text->z + 0)
644 #define BUF_Z(buf) ((buf)->text->bufz + 0) 644 #define BUF_Z(buf) ((buf)->text->bufz + 0)
645 645
646 /* Point. */ 646 /* Point. */
647 #define BI_BUF_PT(buf) ((buf)->pt + 0) 647 #define BI_BUF_PT(buf) ((buf)->pt + 0)
1015 size up to 384K, i.e. indexing the first 192K non-negative 1015 size up to 384K, i.e. indexing the first 192K non-negative
1016 numbers, while still using shorts in the array.) This also 1016 numbers, while still using shorts in the array.) This also
1017 means that the size of the known region can be at most 1017 means that the size of the known region can be at most
1018 64K for width-three characters. 1018 64K for width-three characters.
1019 */ 1019 */
1020 1020
1021 extern short three_to_one_table[]; 1021 extern short three_to_one_table[];
1022 1022
1023 INLINE int real_bufpos_to_bytind (struct buffer *buf, Bufpos x); 1023 INLINE int real_bufpos_to_bytind (struct buffer *buf, Bufpos x);
1024 INLINE int 1024 INLINE int
1025 real_bufpos_to_bytind (struct buffer *buf, Bufpos x) 1025 real_bufpos_to_bytind (struct buffer *buf, Bufpos x)
1162 rarely done in time-critical functions, and so the slight 1162 rarely done in time-critical functions, and so the slight
1163 extra time required for alloca() and copy is well-worth the 1163 extra time required for alloca() and copy is well-worth the
1164 safety of knowing your string data won't be relocated out from 1164 safety of knowing your string data won't be relocated out from
1165 under you. 1165 under you.
1166 */ 1166 */
1167 1167
1168 1168
1169 /* Maybe convert charptr's data into ext-format and store the result in 1169 /* Maybe convert charptr's data into ext-format and store the result in
1170 alloca()'ed space. 1170 alloca()'ed space.
1171 1171
1172 You may wonder why this is written in this fashion and not as a 1172 You may wonder why this is written in this fashion and not as a
1173 function call. With a little trickery it could certainly be 1173 function call. With a little trickery it could certainly be
1174 written this way, but it won't work because of those DAMN GCC WANKERS 1174 written this way, but it won't work because of those DAMN GCC WANKERS
1175 who couldn't be bothered to handle alloca() properly on the x86 1175 who couldn't be bothered to handle alloca() properly on the x86
1176 architecture. (If you put a call to alloca() in the argument to 1176 architecture. (If you put a call to alloca() in the argument to
1177 a function call, the stack space gets allocated right in the 1177 a function call, the stack space gets allocated right in the
1178 middle of the arguments to the function call and you are unbelievably 1178 middle of the arguments to the function call and you are unbelievably
1179 hosed.) */ 1179 hosed.) */
1180 1180
1181 #ifdef MULE 1181 #ifdef MULE
1182 1182
1183 #define GET_CHARPTR_EXT_DATA_ALLOCA(ptr, len, fmt, stick_value_here, stick_len_here) \ 1183 #define GET_CHARPTR_EXT_DATA_ALLOCA(ptr, len, fmt, stick_value_here, stick_len_here) \
1184 do \ 1184 do \
1185 { \ 1185 { \
1255 GET_CHARPTR_EXT_DATA_ALLOCA (ptr, len, FORMAT_CTEXT, stick_value_here, \ 1255 GET_CHARPTR_EXT_DATA_ALLOCA (ptr, len, FORMAT_CTEXT, stick_value_here, \
1256 stick_len_here) 1256 stick_len_here)
1257 1257
1258 /* Maybe convert external charptr's data into internal format and store 1258 /* Maybe convert external charptr's data into internal format and store
1259 the result in alloca()'ed space. 1259 the result in alloca()'ed space.
1260 1260
1261 You may wonder why this is written in this fashion and not as a 1261 You may wonder why this is written in this fashion and not as a
1262 function call. With a little trickery it could certainly be 1262 function call. With a little trickery it could certainly be
1263 written this way, but it won't work because of those DAMN GCC WANKERS 1263 written this way, but it won't work because of those DAMN GCC WANKERS
1264 who couldn't be bothered to handle alloca() properly on the x86 1264 who couldn't be bothered to handle alloca() properly on the x86
1265 architecture. (If you put a call to alloca() in the argument to 1265 architecture. (If you put a call to alloca() in the argument to
1266 a function call, the stack space gets allocated right in the 1266 a function call, the stack space gets allocated right in the
1267 middle of the arguments to the function call and you are unbelievably 1267 middle of the arguments to the function call and you are unbelievably
1268 hosed.) */ 1268 hosed.) */
1269 1269
1270 #ifdef MULE 1270 #ifdef MULE
1271 1271
1272 #define GET_CHARPTR_INT_DATA_ALLOCA(ptr, len, fmt, stick_value_here, stick_len_here)\ 1272 #define GET_CHARPTR_INT_DATA_ALLOCA(ptr, len, fmt, stick_value_here, stick_len_here)\
1273 do \ 1273 do \
1274 { \ 1274 { \
1454 1454
1455 /*----------------------------------------------------------------------*/ 1455 /*----------------------------------------------------------------------*/
1456 /* Settor macros for important positions in a buffer */ 1456 /* Settor macros for important positions in a buffer */
1457 /*----------------------------------------------------------------------*/ 1457 /*----------------------------------------------------------------------*/
1458 1458
1459 /* Set beginning of accessible range of buffer. */ 1459 /* Set beginning of accessible range of buffer. */
1460 #define SET_BOTH_BUF_BEGV(buf, val, bival) \ 1460 #define SET_BOTH_BUF_BEGV(buf, val, bival) \
1461 do \ 1461 do \
1462 { \ 1462 { \
1463 (buf)->begv = (bival); \ 1463 (buf)->begv = (bival); \
1464 (buf)->bufbegv = (val); \ 1464 (buf)->bufbegv = (val); \
1465 } while (0) 1465 } while (0)
1466 1466
1467 /* Set end of accessible range of buffer. */ 1467 /* Set end of accessible range of buffer. */
1468 #define SET_BOTH_BUF_ZV(buf, val, bival) \ 1468 #define SET_BOTH_BUF_ZV(buf, val, bival) \
1469 do \ 1469 do \
1470 { \ 1470 { \
1471 (buf)->zv = (bival); \ 1471 (buf)->zv = (bival); \
1472 (buf)->bufzv = (val); \ 1472 (buf)->bufzv = (val); \
1622 1622
1623 /* Allocation of buffer data. */ 1623 /* Allocation of buffer data. */
1624 1624
1625 #ifdef REL_ALLOC 1625 #ifdef REL_ALLOC
1626 1626
1627 char *r_alloc (char **, unsigned long); 1627 char *r_alloc (unsigned char **, unsigned long);
1628 char *r_re_alloc (char **, unsigned long); 1628 char *r_re_alloc (unsigned char **, unsigned long);
1629 void r_alloc_free (void **); 1629 void r_alloc_free (unsigned char **);
1630 1630
1631 #define BUFFER_ALLOC(data,size) \ 1631 #define BUFFER_ALLOC(data, size) \
1632 ((Bufbyte *) r_alloc ((char **) &data, (size) * sizeof(Bufbyte))) 1632 ((Bufbyte *) r_alloc ((unsigned char **) &data, (size) * sizeof(Bufbyte)))
1633 #define BUFFER_REALLOC(data,size) \ 1633 #define BUFFER_REALLOC(data, size) \
1634 ((Bufbyte *) r_re_alloc ((char **) &data, (size) * sizeof(Bufbyte))) 1634 ((Bufbyte *) r_re_alloc ((unsigned char **) &data, (size) * sizeof(Bufbyte)))
1635 #define BUFFER_FREE(data) r_alloc_free ((void **) &(data)) 1635 #define BUFFER_FREE(data) r_alloc_free ((unsigned char **) &(data))
1636 #define R_ALLOC_DECLARE(var,data) r_alloc_declare (&(var), data) 1636 #define R_ALLOC_DECLARE(var,data) r_alloc_declare (&(var), data)
1637 1637
1638 #else /* !REL_ALLOC */ 1638 #else /* !REL_ALLOC */
1639 1639
1640 #define BUFFER_ALLOC(data,size)\ 1640 #define BUFFER_ALLOC(data,size)\
1641 (data = (Bufbyte *) xmalloc ((size) * sizeof(Bufbyte))) 1641 ((void) (data = xnew_array (Bufbyte, size)))
1642 #define BUFFER_REALLOC(data,size)\ 1642 #define BUFFER_REALLOC(data,size)\
1643 ((Bufbyte *) xrealloc (data, (size) * sizeof(Bufbyte))) 1643 ((Bufbyte *) xrealloc (data, (size) * sizeof(Bufbyte)))
1644 /* Avoid excess parentheses, or syntax errors may rear their heads. */ 1644 /* Avoid excess parentheses, or syntax errors may rear their heads. */
1645 #define BUFFER_FREE(data) xfree (data) 1645 #define BUFFER_FREE(data) xfree (data)
1646 #define R_ALLOC_DECLARE(var,data) 1646 #define R_ALLOC_DECLARE(var,data)
1665 Charcount len); 1665 Charcount len);
1666 int bufbyte_string_displayed_columns (CONST Bufbyte *str, Bytecount len); 1666 int bufbyte_string_displayed_columns (CONST Bufbyte *str, Bytecount len);
1667 int emchar_string_displayed_columns (CONST Emchar *str, Charcount len); 1667 int emchar_string_displayed_columns (CONST Emchar *str, Charcount len);
1668 void convert_bufbyte_string_into_emchar_dynarr (CONST Bufbyte *str, 1668 void convert_bufbyte_string_into_emchar_dynarr (CONST Bufbyte *str,
1669 Bytecount len, 1669 Bytecount len,
1670 emchar_dynarr *dyn); 1670 Emchar_dynarr *dyn);
1671 int convert_bufbyte_string_into_emchar_string (CONST Bufbyte *str, 1671 int convert_bufbyte_string_into_emchar_string (CONST Bufbyte *str,
1672 Bytecount len, 1672 Bytecount len,
1673 Emchar *arr); 1673 Emchar *arr);
1674 void convert_emchar_string_into_bufbyte_dynarr (Emchar *arr, int nels, 1674 void convert_emchar_string_into_bufbyte_dynarr (Emchar *arr, int nels,
1675 bufbyte_dynarr *dyn); 1675 Bufbyte_dynarr *dyn);
1676 Bufbyte *convert_emchar_string_into_malloced_string (Emchar *arr, int nels, 1676 Bufbyte *convert_emchar_string_into_malloced_string (Emchar *arr, int nels,
1677 Bytecount *len_out); 1677 Bytecount *len_out);
1678 1678
1679 /* flags for get_buffer_pos_char(), get_buffer_range_char(), etc. */ 1679 /* flags for get_buffer_pos_char(), get_buffer_range_char(), etc. */
1680 /* At most one of GB_COERCE_RANGE and GB_NO_ERROR_IF_BAD should be 1680 /* At most one of GB_COERCE_RANGE and GB_NO_ERROR_IF_BAD should be