Mercurial > hg > xemacs-beta
annotate src/extents-impl.h @ 5602:c9e5612f5424
Support the MP library on recent FreeBSD, have it pass relevant tests.
src/ChangeLog addition:
2011-11-26 Aidan Kehoe <kehoea@parhasard.net>
* number-mp.c (bignum_to_string):
Don't overwrite the accumulator we've just set up for this
function.
* number-mp.c (BIGNUM_TO_TYPE):
mp_itom() doesn't necessarily do what this code used to think with
negative numbers, it can treat them as unsigned ints. Subtract
numbers from bignum_zero instead of multiplying them by -1 to
convert them to their negative equivalents.
* number-mp.c (bignum_to_int):
* number-mp.c (bignum_to_uint):
* number-mp.c (bignum_to_long):
* number-mp.c (bignum_to_ulong):
* number-mp.c (bignum_to_double):
Use the changed BIGNUM_TO_TYPE() in these functions.
* number-mp.c (bignum_ceil):
* number-mp.c (bignum_floor):
In these functions, be more careful about rounding to positive and
negative infinity, respectively. Don't use the sign of QUOTIENT
when working out out whether to add or subtract one, rather use
the sign QUOTIENT would have if arbitrary-precision division were
done.
* number-mp.h:
* number-mp.h (MP_GCD):
Wrap #include <mp.h> in BEGIN_C_DECLS/END_C_DECLS.
* number.c (Fbigfloat_get_precision):
* number.c (Fbigfloat_set_precision):
Don't attempt to call XBIGFLOAT_GET_PREC if this build doesn't
support big floats.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Sat, 26 Nov 2011 17:59:14 +0000 |
| parents | 308d34e9f07d |
| children |
| rev | line source |
|---|---|
| 872 | 1 /* Copyright (c) 1994, 1995 Free Software Foundation. |
|
5127
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
2 Copyright (c) 1995, 1996, 2002, 2010 Ben Wing. |
| 872 | 3 |
| 4 This file is part of XEmacs. | |
| 5 | |
|
5402
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
5127
diff
changeset
|
6 XEmacs is free software: you can redistribute it and/or modify it |
| 872 | 7 under the terms of the GNU General Public License as published by the |
|
5402
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
5127
diff
changeset
|
8 Free Software Foundation, either version 3 of the License, or (at your |
|
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
5127
diff
changeset
|
9 option) any later version. |
| 872 | 10 |
| 11 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 for more details. | |
| 15 | |
| 16 You should have received a copy of the GNU General Public License | |
|
5402
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
5127
diff
changeset
|
17 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 872 | 18 |
| 19 /* Synched up with: Not in FSF. */ | |
| 20 | |
| 21 #ifndef INCLUDED_extents_impl_h_ | |
| 22 #define INCLUDED_extents_impl_h_ | |
| 23 | |
| 24 #include "extents.h" | |
| 25 | |
| 26 struct extent | |
| 27 { | |
|
5120
d1247f3cc363
latest work on lisp-object workspace;
Ben Wing <ben@xemacs.org>
parents:
3017
diff
changeset
|
28 FROB_BLOCK_LISP_OBJECT_HEADER lheader; |
| 872 | 29 |
| 30 Memxpos start; | |
| 31 Memxpos end; | |
| 32 Lisp_Object object; /* A buffer, string, Qnil (extent detached from no | |
| 33 buffer), Qt (destroyed extent) */ | |
| 34 | |
| 35 /* Extent properties are conceptually a plist, but the most common | |
| 36 props are implemented as bits instead of conses. */ | |
| 37 struct | |
| 38 { | |
| 39 Lisp_Object face; | |
| 40 | |
| 41 /* These flags are simply an optimization for common boolean properties | |
| 42 which go onto the extent's property list. Any of them would work if | |
| 43 done in the normal way, but the space savings of doing these in this | |
| 44 way is significant. Note that if you add a flag, there are numerous | |
| 45 places in extents.c that need to know about it. | |
| 46 | |
| 47 Another consideration is that some of these properties are accessed | |
| 48 during redisplay, so it's good for access to them to be fast (a bit | |
| 49 reference instead of a search down a plist). | |
| 50 | |
| 51 `begin_glyph_layout' and `end_glyph_layout' are unusual in that | |
| 52 they have 4 states instead of 2. | |
| 53 | |
| 54 Other special extent properties are stored in an auxiliary | |
| 55 structure that sits at the beginning of the plist. The has_aux | |
| 56 flag indicates whether this structure exists. The has_parent | |
| 57 flag is an optimization indicating whether the extent has a parent | |
| 58 (this could also be determined by looking in the aux structure). */ | |
| 59 | |
| 60 enum_field (glyph_layout) begin_glyph_layout :2; | |
| 61 /* 2 text, margins, or whitespace */ | |
| 62 enum_field (glyph_layout) end_glyph_layout :2; | |
| 63 /* 4 text, margins, or whitespace */ | |
| 64 unsigned int has_parent :1; /* 5 extent has a parent */ | |
| 65 unsigned int has_aux :1; /* 6 extent has an aux. structure */ | |
| 66 unsigned int start_open :1; /* 7 insertion behavior at start */ | |
| 67 unsigned int end_open :1; /* 8 insertion behavior at end */ | |
| 68 unsigned int unique :1; /* 9 there may be only one attached */ | |
| 69 unsigned int duplicable :1; /* 10 copied to strings by kill/undo */ | |
| 70 unsigned int detachable :1; /* 11 extent detaches if text deleted */ | |
| 71 unsigned int internal :1; /* 12 used by map-extents etc. */ | |
| 72 unsigned int in_red_event :1; /* 13 An event has been spawned for | |
| 73 initial redisplay. | |
| 74 (not exported to lisp) */ | |
| 75 unsigned int unused16 :1; /* 16 unused bits */ | |
| 76 /* --- Adding more flags will cause the extent struct to grow by another | |
| 77 word. It's not clear that this would make a difference, however, | |
| 78 because on 32-bit machines things tend to get allocated in chunks | |
| 79 of 4 bytes. */ | |
| 80 } flags; | |
| 81 /* The plist may have an auxiliary structure as its first element */ | |
| 82 Lisp_Object plist; | |
| 83 }; | |
| 84 | |
| 85 /* Basic properties of an extent (not affected by the extent's parent) */ | |
| 86 #define extent_object(e) ((e)->object) | |
| 87 #define extent_start(e) ((e)->start + 0) | |
| 88 #define extent_end(e) ((e)->end + 0) | |
| 89 #define set_extent_start(e, val) ((void) ((e)->start = (val))) | |
| 90 #define set_extent_end(e, val) ((void) ((e)->end = (val))) | |
| 91 #define extent_endpoint(e, endp) ((endp) ? extent_end (e) : extent_start (e)) | |
| 92 #define set_extent_endpoint(e, val, endp) \ | |
| 93 ((endp) ? set_extent_end (e, val) : set_extent_start (e, val)) | |
| 94 #define extent_detached_p(e) (extent_start (e) < 0) | |
| 95 | |
| 96 /* Additional information that may be present in an extent. The idea is | |
| 97 that fast access is provided to this information, but since (hopefully) | |
| 98 most extents won't have this set on them, we usually don't need to | |
| 99 have this structure around and thus the size of an extent is smaller. */ | |
| 100 | |
| 101 typedef struct extent_auxiliary extent_auxiliary; | |
|
5127
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
102 |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
103 #define EXTENT_AUXILIARY_SLOTS \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
104 SLOT (begin_glyph) \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
105 SLOT (end_glyph) \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
106 SLOT (parent) \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
107 /* We use a weak list here. Originally I didn't do this and \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
108 depended on having the extent's finalization method remove \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
109 itself from its parent's children list. This runs into \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
110 lots and lots of problems though because everything is in \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
111 a really really bizarre state when an extent's finalization \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
112 method is called (it happens in sweep_extents() by way of \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
113 ADDITIONAL_FREE_extent()) and it's extremely difficult to \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
114 avoid getting hosed by just-freed objects. */ \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
115 SLOT (children) \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
116 SLOT (invisible) \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
117 SLOT (read_only) \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
118 SLOT (mouse_face) \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
119 SLOT (initial_redisplay_function) \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
120 SLOT (before_change_functions) \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
121 SLOT (after_change_functions) |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
122 |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
123 |
| 872 | 124 struct extent_auxiliary |
| 125 { | |
|
5127
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
126 NORMAL_LISP_OBJECT_HEADER header; |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
127 #define SLOT(x) Lisp_Object x; |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
128 EXTENT_AUXILIARY_SLOTS |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
129 #undef SLOT |
| 872 | 130 int priority; |
| 131 }; | |
| 132 | |
|
5127
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
133 extern Lisp_Object Vextent_auxiliary_defaults; |
| 872 | 134 |
| 135 struct extent_info | |
| 136 { | |
|
5127
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
137 NORMAL_LISP_OBJECT_HEADER header; |
| 872 | 138 |
| 139 struct extent_list *extents; | |
| 140 struct stack_of_extents *soe; | |
| 141 }; | |
| 142 | |
| 143 /* A "normal" field is one that is stored in the `struct flags' structure | |
| 144 in an extent. an "aux" field is one that is stored in the extent's | |
| 145 auxiliary structure. | |
| 146 | |
| 147 The functions below that have `extent_no_chase' in their name operate | |
| 148 on an extent directly (ignoring its parent), and should normally | |
| 149 only be used on extents known not to have a parent. The other | |
| 150 versions chase down any parent links. */ | |
| 151 | |
| 152 #define extent_no_chase_normal_field(e, field) ((e)->flags.field) | |
| 153 | |
| 154 DECLARE_INLINE_HEADER ( | |
| 155 struct extent_auxiliary * | |
| 156 extent_aux_or_default (EXTENT e) | |
| 157 ) | |
| 158 { | |
| 159 return e->flags.has_aux ? | |
| 160 XEXTENT_AUXILIARY (XCAR (e->plist)) : | |
|
5127
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
161 XEXTENT_AUXILIARY (Vextent_auxiliary_defaults); |
| 872 | 162 } |
| 163 | |
| 164 #define extent_no_chase_aux_field(e, field) (extent_aux_or_default(e)->field) | |
| 165 | |
| 166 #define extent_normal_field(e, field) \ | |
| 167 extent_no_chase_normal_field (extent_ancestor (e), field) | |
| 168 | |
| 169 #define extent_aux_field(e, field) \ | |
| 170 extent_no_chase_aux_field (extent_ancestor (e), field) | |
| 171 | |
| 172 #define set_extent_no_chase_aux_field(e, field, value) do { \ | |
| 173 EXTENT sencaf_e = (e); \ | |
| 174 if (! sencaf_e->flags.has_aux) \ | |
|
5127
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
175 attach_extent_auxiliary (sencaf_e); \ |
|
a9c41067dd88
more cleanups, terminology clarification, lots of doc work
Ben Wing <ben@xemacs.org>
parents:
5120
diff
changeset
|
176 XEXTENT_AUXILIARY (XCAR (sencaf_e->plist))->field = (value); \ |
| 872 | 177 } while (0) |
| 178 | |
| 179 #define set_extent_no_chase_normal_field(e, field, value) \ | |
| 180 extent_no_chase_normal_field (e, field) = (value) | |
| 181 | |
| 182 #define set_extent_aux_field(e, field, value) \ | |
| 183 set_extent_no_chase_aux_field (extent_ancestor (e), field, value) | |
| 184 | |
| 185 #define set_extent_normal_field(e, field, value) \ | |
| 186 set_extent_no_chase_normal_field (extent_ancestor (e), field, value) | |
| 187 | |
| 188 /* The `parent' and `children' fields are not affected by any | |
| 189 parent links. We don't provide any settors for these fields | |
| 190 because they need special handling and it's cleaner just to | |
| 191 do this in the particular functions that need to do this. */ | |
| 192 | |
| 193 #define extent_parent(e) extent_no_chase_aux_field (e, parent) | |
| 194 #define extent_children(e) extent_no_chase_aux_field (e, children) | |
| 195 | |
| 196 EXTENT extent_ancestor_1 (EXTENT e); | |
| 197 | |
| 198 /* extent_ancestor() chases all the parent links until there aren't any | |
| 199 more. extent_ancestor_1() does the same thing but it a function; | |
| 200 the following optimizes the most common case. */ | |
| 201 DECLARE_INLINE_HEADER ( | |
| 202 EXTENT | |
| 203 extent_ancestor (EXTENT e) | |
| 204 ) | |
| 205 { | |
| 206 return e->flags.has_parent ? extent_ancestor_1 (e) : e; | |
| 207 } | |
| 208 | |
| 209 #define extent_begin_glyph(e) extent_aux_field (e, begin_glyph) | |
| 210 #define extent_end_glyph(e) extent_aux_field (e, end_glyph) | |
| 211 #define extent_priority(e) extent_aux_field (e, priority) | |
| 212 #define extent_invisible(e) extent_aux_field (e, invisible) | |
| 213 #define extent_read_only(e) extent_aux_field (e, read_only) | |
| 214 #define extent_mouse_face(e) extent_aux_field (e, mouse_face) | |
| 215 #define extent_initial_redisplay_function(e) extent_aux_field (e, initial_redisplay_function) | |
| 216 #define extent_before_change_functions(e) extent_aux_field (e, before_change_functions) | |
| 217 #define extent_after_change_functions(e) extent_aux_field (e, after_change_functions) | |
| 218 | |
| 219 #define set_extent_begin_glyph(e, value) \ | |
| 220 set_extent_aux_field (e, begin_glyph, value) | |
| 221 #define set_extent_end_glyph(e, value) \ | |
| 222 set_extent_aux_field (e, end_glyph, value) | |
| 223 #define set_extent_priority(e, value) \ | |
| 224 set_extent_aux_field (e, priority, value) | |
| 225 #define set_extent_invisible_1(e, value) \ | |
| 226 set_extent_aux_field (e, invisible, value) | |
| 227 #define set_extent_read_only(e, value) \ | |
| 228 set_extent_aux_field (e, read_only, value) | |
| 229 #define set_extent_mouse_face(e, value) \ | |
| 230 set_extent_aux_field (e, mouse_face, value) | |
| 231 /* Use Fset_extent_initial_redisplay_function unless you know what you're doing */ | |
| 232 #define set_extent_initial_redisplay_function(e, value) \ | |
| 233 set_extent_aux_field (e, initial_redisplay_function, value) | |
| 234 #define set_extent_before_change_functions(e, value) \ | |
| 235 set_extent_aux_field (e, before_change_functions, value) | |
| 236 #define set_extent_after_change_functions(e, value) \ | |
| 237 set_extent_aux_field (e, after_change_functions, value) | |
| 238 | |
| 239 #define extent_face(e) extent_normal_field (e, face) | |
| 240 #define extent_begin_glyph_layout(e) ((enum glyph_layout) extent_normal_field (e, begin_glyph_layout)) | |
| 241 #define extent_end_glyph_layout(e) ((enum glyph_layout) extent_normal_field (e, end_glyph_layout)) | |
| 242 #define extent_start_open_p(e) extent_normal_field (e, start_open) | |
| 243 #define extent_end_open_p(e) extent_normal_field (e, end_open) | |
| 244 #define extent_unique_p(e) extent_normal_field (e, unique) | |
| 245 #define extent_duplicable_p(e) extent_normal_field (e, duplicable) | |
| 246 #define extent_detachable_p(e) extent_normal_field (e, detachable) | |
| 247 #define extent_internal_p(e) extent_normal_field (e, internal) | |
| 248 #define extent_in_red_event_p(e) extent_normal_field (e, in_red_event) | |
| 249 | |
| 250 #define set_extent_face(e, val) \ | |
| 251 set_extent_normal_field (e, face, val) | |
| 252 #define set_extent_begin_glyph_layout(e, val) \ | |
| 253 set_extent_normal_field (e, begin_glyph_layout, val) | |
| 254 #define set_extent_end_glyph_layout(e, val) \ | |
| 255 set_extent_normal_field (e, end_glyph_layout, val) | |
| 256 #define set_extent_start_open_p(e, val) \ | |
| 257 set_extent_normal_field (e, start_open, val) | |
| 258 #define set_extent_end_open_p(e, val) \ | |
| 259 set_extent_normal_field (e, end_open, val) | |
| 260 #define set_extent_unique_p(e, val) \ | |
| 261 set_extent_normal_field (e, unique, val) | |
| 262 #define set_extent_duplicable_p(e, val) \ | |
| 263 set_extent_normal_field (e, duplicable, val) | |
| 264 #define set_extent_detachable_p(e, val) \ | |
| 265 set_extent_normal_field (e, detachable, val) | |
| 266 #define set_extent_internal_p(e, val) \ | |
| 267 set_extent_normal_field (e, internal, val) | |
| 268 #define set_extent_in_red_event_p(e, val) \ | |
| 269 set_extent_normal_field (e, in_red_event, val) | |
| 270 | |
| 271 DECLARE_INLINE_HEADER ( | |
| 272 Lisp_Object * | |
| 273 extent_no_chase_plist_addr (EXTENT e) | |
| 274 ) | |
| 275 { | |
| 276 return e->flags.has_aux ? &XCDR (e->plist) : &e->plist; | |
| 277 } | |
| 278 | |
| 279 #define extent_no_chase_plist(e) (*extent_no_chase_plist_addr (e)) | |
| 280 | |
| 281 #define extent_plist_addr(e) extent_no_chase_plist_addr (extent_ancestor (e)) | |
| 282 #define extent_plist_slot(e) extent_no_chase_plist (extent_ancestor (e)) | |
| 283 | |
| 284 | |
| 285 #define EXTENT_LIVE_P(e) (!EQ (extent_object (e), Qt)) | |
| 286 | |
| 287 #define CHECK_LIVE_EXTENT(x) do { \ | |
| 288 CHECK_EXTENT (x); \ | |
| 289 if (!EXTENT_LIVE_P (XEXTENT (x))) \ | |
| 290 dead_wrong_type_argument (Qextent_live_p, (x)); \ | |
| 291 } while (0) | |
| 292 #define CONCHECK_LIVE_EXTENT(x) do { \ | |
| 293 CONCHECK_EXTENT (x); \ | |
| 294 if (!EXTENT_LIVE_P (XEXTENT (x))) \ | |
| 295 x = wrong_type_argument (Qextent_live_p, (x)); \ | |
| 296 } while (0) | |
| 297 | |
| 298 #endif /* INCLUDED_extents_impl_h_ */ |