Mercurial > vim
annotate src/fold.c @ 5735:50dbef5e774a v7.4.212
updated for version 7.4.212
Problem: Now that the +visual feature is always enabled the #ifdefs for it
are not useful.
Solution: Remove the checks for FEAT_VISUAL.
| author | Bram Moolenaar <bram@vim.org> |
|---|---|
| date | Sun, 23 Mar 2014 15:13:05 +0100 |
| parents | 878ed73c7070 |
| children | c1aa837853ea |
| rev | line source |
|---|---|
| 7 | 1 /* vim:set ts=8 sts=4 sw=4: |
| 2 * vim600:fdm=marker fdl=1 fdc=3: | |
| 3 * | |
| 4 * VIM - Vi IMproved by Bram Moolenaar | |
| 5 * | |
| 6 * Do ":help uganda" in Vim to read copying and usage conditions. | |
| 7 * Do ":help credits" in Vim to see a list of people who contributed. | |
| 8 * See README.txt for an overview of the Vim source code. | |
| 9 */ | |
| 10 | |
| 11 /* | |
| 12 * fold.c: code for folding | |
| 13 */ | |
| 14 | |
| 15 #include "vim.h" | |
| 16 | |
| 17 #if defined(FEAT_FOLDING) || defined(PROTO) | |
| 18 | |
| 19 /* local declarations. {{{1 */ | |
| 20 /* typedef fold_T {{{2 */ | |
| 21 /* | |
| 22 * The toplevel folds for each window are stored in the w_folds growarray. | |
| 23 * Each toplevel fold can contain an array of second level folds in the | |
| 24 * fd_nested growarray. | |
| 25 * The info stored in both growarrays is the same: An array of fold_T. | |
| 26 */ | |
| 27 typedef struct | |
| 28 { | |
| 29 linenr_T fd_top; /* first line of fold; for nested fold | |
| 30 * relative to parent */ | |
| 31 linenr_T fd_len; /* number of lines in the fold */ | |
| 32 garray_T fd_nested; /* array of nested folds */ | |
| 33 char fd_flags; /* see below */ | |
| 34 char fd_small; /* TRUE, FALSE or MAYBE: fold smaller than | |
| 35 'foldminlines'; MAYBE applies to nested | |
| 36 folds too */ | |
| 37 } fold_T; | |
| 38 | |
| 39 #define FD_OPEN 0 /* fold is open (nested ones can be closed) */ | |
| 40 #define FD_CLOSED 1 /* fold is closed */ | |
| 41 #define FD_LEVEL 2 /* depends on 'foldlevel' (nested folds too) */ | |
| 42 | |
| 43 #define MAX_LEVEL 20 /* maximum fold depth */ | |
| 44 | |
| 45 /* static functions {{{2 */ | |
| 46 static void newFoldLevelWin __ARGS((win_T *wp)); | |
| 47 static int checkCloseRec __ARGS((garray_T *gap, linenr_T lnum, int level)); | |
| 48 static int foldFind __ARGS((garray_T *gap, linenr_T lnum, fold_T **fpp)); | |
| 49 static int foldLevelWin __ARGS((win_T *wp, linenr_T lnum)); | |
| 50 static void checkupdate __ARGS((win_T *wp)); | |
| 1757 | 51 static void setFoldRepeat __ARGS((linenr_T lnum, long count, int do_open)); |
| 7 | 52 static linenr_T setManualFold __ARGS((linenr_T lnum, int opening, int recurse, int *donep)); |
| 53 static linenr_T setManualFoldWin __ARGS((win_T *wp, linenr_T lnum, int opening, int recurse, int *donep)); | |
| 54 static void foldOpenNested __ARGS((fold_T *fpr)); | |
| 55 static void deleteFoldEntry __ARGS((garray_T *gap, int idx, int recursive)); | |
| 56 static void foldMarkAdjustRecurse __ARGS((garray_T *gap, linenr_T line1, linenr_T line2, long amount, long amount_after)); | |
| 57 static int getDeepestNestingRecurse __ARGS((garray_T *gap)); | |
| 58 static int check_closed __ARGS((win_T *win, fold_T *fp, int *use_levelp, int level, int *maybe_smallp, linenr_T lnum_off)); | |
| 59 static void checkSmall __ARGS((win_T *wp, fold_T *fp, linenr_T lnum_off)); | |
| 60 static void setSmallMaybe __ARGS((garray_T *gap)); | |
| 61 static void foldCreateMarkers __ARGS((linenr_T start, linenr_T end)); | |
| 62 static void foldAddMarker __ARGS((linenr_T lnum, char_u *marker, int markerlen)); | |
| 63 static void deleteFoldMarkers __ARGS((fold_T *fp, int recursive, linenr_T lnum_off)); | |
| 64 static void foldDelMarker __ARGS((linenr_T lnum, char_u *marker, int markerlen)); | |
| 65 static void foldUpdateIEMS __ARGS((win_T *wp, linenr_T top, linenr_T bot)); | |
| 66 static void parseMarker __ARGS((win_T *wp)); | |
| 67 | |
| 68 static char *e_nofold = N_("E490: No fold found"); | |
| 69 | |
| 70 /* | |
| 71 * While updating the folds lines between invalid_top and invalid_bot have an | |
| 72 * undefined fold level. Only used for the window currently being updated. | |
| 73 */ | |
| 74 static linenr_T invalid_top = (linenr_T)0; | |
| 75 static linenr_T invalid_bot = (linenr_T)0; | |
| 76 | |
| 77 /* | |
| 78 * When using 'foldexpr' we sometimes get the level of the next line, which | |
| 79 * calls foldlevel() to get the level of the current line, which hasn't been | |
| 80 * stored yet. To get around this chicken-egg problem the level of the | |
| 81 * previous line is stored here when available. prev_lnum is zero when the | |
| 82 * level is not available. | |
| 83 */ | |
| 84 static linenr_T prev_lnum = 0; | |
| 85 static int prev_lnum_lvl = -1; | |
| 86 | |
| 87 /* Flags used for "done" argument of setManualFold. */ | |
| 88 #define DONE_NOTHING 0 | |
| 89 #define DONE_ACTION 1 /* did close or open a fold */ | |
| 90 #define DONE_FOLD 2 /* did find a fold */ | |
| 91 | |
| 92 static int foldstartmarkerlen; | |
| 93 static char_u *foldendmarker; | |
| 94 static int foldendmarkerlen; | |
| 95 | |
| 96 /* Exported folding functions. {{{1 */ | |
| 97 /* copyFoldingState() {{{2 */ | |
| 98 #if defined(FEAT_WINDOWS) || defined(PROTO) | |
| 99 /* | |
| 100 * Copy that folding state from window "wp_from" to window "wp_to". | |
| 101 */ | |
| 102 void | |
| 103 copyFoldingState(wp_from, wp_to) | |
| 104 win_T *wp_from; | |
| 105 win_T *wp_to; | |
| 106 { | |
| 107 wp_to->w_fold_manual = wp_from->w_fold_manual; | |
| 108 wp_to->w_foldinvalid = wp_from->w_foldinvalid; | |
| 109 cloneFoldGrowArray(&wp_from->w_folds, &wp_to->w_folds); | |
| 110 } | |
| 111 #endif | |
| 112 | |
| 113 /* hasAnyFolding() {{{2 */ | |
| 114 /* | |
| 115 * Return TRUE if there may be folded lines in the current window. | |
| 116 */ | |
| 117 int | |
| 118 hasAnyFolding(win) | |
| 119 win_T *win; | |
| 120 { | |
| 121 /* very simple now, but can become more complex later */ | |
| 122 return (win->w_p_fen | |
| 123 && (!foldmethodIsManual(win) || win->w_folds.ga_len > 0)); | |
| 124 } | |
| 125 | |
| 126 /* hasFolding() {{{2 */ | |
| 127 /* | |
| 128 * Return TRUE if line "lnum" in the current window is part of a closed | |
| 129 * fold. | |
| 130 * When returning TRUE, *firstp and *lastp are set to the first and last | |
| 131 * lnum of the sequence of folded lines (skipped when NULL). | |
| 132 */ | |
| 133 int | |
| 134 hasFolding(lnum, firstp, lastp) | |
| 135 linenr_T lnum; | |
| 136 linenr_T *firstp; | |
| 137 linenr_T *lastp; | |
| 138 { | |
| 139 return hasFoldingWin(curwin, lnum, firstp, lastp, TRUE, NULL); | |
| 140 } | |
| 141 | |
| 142 /* hasFoldingWin() {{{2 */ | |
| 143 int | |
| 144 hasFoldingWin(win, lnum, firstp, lastp, cache, infop) | |
| 145 win_T *win; | |
| 146 linenr_T lnum; | |
| 147 linenr_T *firstp; | |
| 148 linenr_T *lastp; | |
| 149 int cache; /* when TRUE: use cached values of window */ | |
| 150 foldinfo_T *infop; /* where to store fold info */ | |
| 151 { | |
| 152 int had_folded = FALSE; | |
| 153 linenr_T first = 0; | |
| 154 linenr_T last = 0; | |
| 155 linenr_T lnum_rel = lnum; | |
| 156 int x; | |
| 157 fold_T *fp; | |
| 158 int level = 0; | |
| 159 int use_level = FALSE; | |
| 160 int maybe_small = FALSE; | |
| 161 garray_T *gap; | |
| 162 int low_level = 0;; | |
| 163 | |
| 164 checkupdate(win); | |
| 165 /* | |
| 166 * Return quickly when there is no folding at all in this window. | |
| 167 */ | |
| 168 if (!hasAnyFolding(win)) | |
| 169 { | |
| 170 if (infop != NULL) | |
| 171 infop->fi_level = 0; | |
| 172 return FALSE; | |
| 173 } | |
| 174 | |
| 175 if (cache) | |
| 176 { | |
| 177 /* | |
| 178 * First look in cached info for displayed lines. This is probably | |
| 179 * the fastest, but it can only be used if the entry is still valid. | |
| 180 */ | |
| 181 x = find_wl_entry(win, lnum); | |
| 182 if (x >= 0) | |
| 183 { | |
| 184 first = win->w_lines[x].wl_lnum; | |
| 185 last = win->w_lines[x].wl_lastlnum; | |
| 186 had_folded = win->w_lines[x].wl_folded; | |
| 187 } | |
| 188 } | |
| 189 | |
| 190 if (first == 0) | |
| 191 { | |
| 192 /* | |
| 193 * Recursively search for a fold that contains "lnum". | |
| 194 */ | |
| 195 gap = &win->w_folds; | |
| 196 for (;;) | |
| 197 { | |
| 198 if (!foldFind(gap, lnum_rel, &fp)) | |
| 199 break; | |
| 200 | |
| 201 /* Remember lowest level of fold that starts in "lnum". */ | |
| 202 if (lnum_rel == fp->fd_top && low_level == 0) | |
| 203 low_level = level + 1; | |
| 204 | |
| 205 first += fp->fd_top; | |
| 206 last += fp->fd_top; | |
| 207 | |
| 208 /* is this fold closed? */ | |
| 209 had_folded = check_closed(win, fp, &use_level, level, | |
| 210 &maybe_small, lnum - lnum_rel); | |
| 211 if (had_folded) | |
| 212 { | |
| 213 /* Fold closed: Set last and quit loop. */ | |
| 214 last += fp->fd_len - 1; | |
| 215 break; | |
| 216 } | |
| 217 | |
| 218 /* Fold found, but it's open: Check nested folds. Line number is | |
| 219 * relative to containing fold. */ | |
| 220 gap = &fp->fd_nested; | |
| 221 lnum_rel -= fp->fd_top; | |
| 222 ++level; | |
| 223 } | |
| 224 } | |
| 225 | |
| 226 if (!had_folded) | |
| 227 { | |
| 228 if (infop != NULL) | |
| 229 { | |
| 230 infop->fi_level = level; | |
| 231 infop->fi_lnum = lnum - lnum_rel; | |
| 232 infop->fi_low_level = low_level == 0 ? level : low_level; | |
| 233 } | |
| 234 return FALSE; | |
| 235 } | |
| 236 | |
| 237 if (lastp != NULL) | |
| 238 *lastp = last; | |
| 239 if (firstp != NULL) | |
| 240 *firstp = first; | |
| 241 if (infop != NULL) | |
| 242 { | |
| 243 infop->fi_level = level + 1; | |
| 244 infop->fi_lnum = first; | |
| 245 infop->fi_low_level = low_level == 0 ? level + 1 : low_level; | |
| 246 } | |
| 247 return TRUE; | |
| 248 } | |
| 249 | |
| 250 /* foldLevel() {{{2 */ | |
| 251 /* | |
| 252 * Return fold level at line number "lnum" in the current window. | |
| 253 */ | |
| 254 int | |
| 255 foldLevel(lnum) | |
| 256 linenr_T lnum; | |
| 257 { | |
| 258 /* While updating the folds lines between invalid_top and invalid_bot have | |
| 259 * an undefined fold level. Otherwise update the folds first. */ | |
| 260 if (invalid_top == (linenr_T)0) | |
| 261 checkupdate(curwin); | |
| 262 else if (lnum == prev_lnum && prev_lnum_lvl >= 0) | |
| 263 return prev_lnum_lvl; | |
| 264 else if (lnum >= invalid_top && lnum <= invalid_bot) | |
| 265 return -1; | |
| 266 | |
| 267 /* Return quickly when there is no folding at all in this window. */ | |
| 268 if (!hasAnyFolding(curwin)) | |
| 269 return 0; | |
| 270 | |
| 271 return foldLevelWin(curwin, lnum); | |
| 272 } | |
| 273 | |
| 274 /* lineFolded() {{{2 */ | |
| 275 /* | |
| 276 * Low level function to check if a line is folded. Doesn't use any caching. | |
| 277 * Return TRUE if line is folded. | |
| 278 * Return FALSE if line is not folded. | |
| 279 * Return MAYBE if the line is folded when next to a folded line. | |
| 280 */ | |
| 281 int | |
| 282 lineFolded(win, lnum) | |
| 283 win_T *win; | |
| 284 linenr_T lnum; | |
| 285 { | |
| 286 return foldedCount(win, lnum, NULL) != 0; | |
| 287 } | |
| 288 | |
| 289 /* foldedCount() {{{2 */ | |
| 290 /* | |
| 291 * Count the number of lines that are folded at line number "lnum". | |
| 292 * Normally "lnum" is the first line of a possible fold, and the returned | |
| 293 * number is the number of lines in the fold. | |
| 294 * Doesn't use caching from the displayed window. | |
| 295 * Returns number of folded lines from "lnum", or 0 if line is not folded. | |
| 296 * When "infop" is not NULL, fills *infop with the fold level info. | |
| 297 */ | |
| 298 long | |
| 299 foldedCount(win, lnum, infop) | |
| 300 win_T *win; | |
| 301 linenr_T lnum; | |
| 302 foldinfo_T *infop; | |
| 303 { | |
| 304 linenr_T last; | |
| 305 | |
| 306 if (hasFoldingWin(win, lnum, NULL, &last, FALSE, infop)) | |
| 307 return (long)(last - lnum + 1); | |
| 308 return 0; | |
| 309 } | |
| 310 | |
| 311 /* foldmethodIsManual() {{{2 */ | |
| 312 /* | |
| 313 * Return TRUE if 'foldmethod' is "manual" | |
| 314 */ | |
| 315 int | |
| 316 foldmethodIsManual(wp) | |
| 317 win_T *wp; | |
| 318 { | |
| 319 return (wp->w_p_fdm[3] == 'u'); | |
| 320 } | |
| 321 | |
| 322 /* foldmethodIsIndent() {{{2 */ | |
| 323 /* | |
| 324 * Return TRUE if 'foldmethod' is "indent" | |
| 325 */ | |
| 326 int | |
| 327 foldmethodIsIndent(wp) | |
| 328 win_T *wp; | |
| 329 { | |
| 330 return (wp->w_p_fdm[0] == 'i'); | |
| 331 } | |
| 332 | |
| 333 /* foldmethodIsExpr() {{{2 */ | |
| 334 /* | |
| 335 * Return TRUE if 'foldmethod' is "expr" | |
| 336 */ | |
| 337 int | |
| 338 foldmethodIsExpr(wp) | |
| 339 win_T *wp; | |
| 340 { | |
| 341 return (wp->w_p_fdm[1] == 'x'); | |
| 342 } | |
| 343 | |
| 344 /* foldmethodIsMarker() {{{2 */ | |
| 345 /* | |
| 346 * Return TRUE if 'foldmethod' is "marker" | |
| 347 */ | |
| 348 int | |
| 349 foldmethodIsMarker(wp) | |
| 350 win_T *wp; | |
| 351 { | |
| 352 return (wp->w_p_fdm[2] == 'r'); | |
| 353 } | |
| 354 | |
| 355 /* foldmethodIsSyntax() {{{2 */ | |
| 356 /* | |
| 357 * Return TRUE if 'foldmethod' is "syntax" | |
| 358 */ | |
| 359 int | |
| 360 foldmethodIsSyntax(wp) | |
| 361 win_T *wp; | |
| 362 { | |
| 363 return (wp->w_p_fdm[0] == 's'); | |
| 364 } | |
| 365 | |
| 366 /* foldmethodIsDiff() {{{2 */ | |
| 367 /* | |
| 368 * Return TRUE if 'foldmethod' is "diff" | |
| 369 */ | |
| 370 int | |
| 371 foldmethodIsDiff(wp) | |
| 372 win_T *wp; | |
| 373 { | |
| 374 return (wp->w_p_fdm[0] == 'd'); | |
| 375 } | |
| 376 | |
| 377 /* closeFold() {{{2 */ | |
| 378 /* | |
| 379 * Close fold for current window at line "lnum". | |
| 380 * Repeat "count" times. | |
| 381 */ | |
| 382 void | |
| 383 closeFold(lnum, count) | |
| 384 linenr_T lnum; | |
| 385 long count; | |
| 386 { | |
| 387 setFoldRepeat(lnum, count, FALSE); | |
| 388 } | |
| 389 | |
| 390 /* closeFoldRecurse() {{{2 */ | |
| 391 /* | |
| 392 * Close fold for current window at line "lnum" recursively. | |
| 393 */ | |
| 394 void | |
| 395 closeFoldRecurse(lnum) | |
| 396 linenr_T lnum; | |
| 397 { | |
| 398 (void)setManualFold(lnum, FALSE, TRUE, NULL); | |
| 399 } | |
| 400 | |
| 401 /* opFoldRange() {{{2 */ | |
| 402 /* | |
| 403 * Open or Close folds for current window in lines "first" to "last". | |
| 404 * Used for "zo", "zO", "zc" and "zC" in Visual mode. | |
| 405 */ | |
| 406 void | |
| 407 opFoldRange(first, last, opening, recurse, had_visual) | |
| 408 linenr_T first; | |
| 409 linenr_T last; | |
| 410 int opening; /* TRUE to open, FALSE to close */ | |
| 411 int recurse; /* TRUE to do it recursively */ | |
| 412 int had_visual; /* TRUE when Visual selection used */ | |
| 413 { | |
| 414 int done = DONE_NOTHING; /* avoid error messages */ | |
| 415 linenr_T lnum; | |
| 416 linenr_T lnum_next; | |
| 417 | |
| 418 for (lnum = first; lnum <= last; lnum = lnum_next + 1) | |
| 419 { | |
| 420 lnum_next = lnum; | |
| 421 /* Opening one level only: next fold to open is after the one going to | |
| 422 * be opened. */ | |
| 423 if (opening && !recurse) | |
| 424 (void)hasFolding(lnum, NULL, &lnum_next); | |
| 425 (void)setManualFold(lnum, opening, recurse, &done); | |
| 426 /* Closing one level only: next line to close a fold is after just | |
| 427 * closed fold. */ | |
| 428 if (!opening && !recurse) | |
| 429 (void)hasFolding(lnum, NULL, &lnum_next); | |
| 430 } | |
| 431 if (done == DONE_NOTHING) | |
| 432 EMSG(_(e_nofold)); | |
| 433 /* Force a redraw to remove the Visual highlighting. */ | |
| 434 if (had_visual) | |
| 435 redraw_curbuf_later(INVERTED); | |
| 436 } | |
| 437 | |
| 438 /* openFold() {{{2 */ | |
| 439 /* | |
| 440 * Open fold for current window at line "lnum". | |
| 441 * Repeat "count" times. | |
| 442 */ | |
| 443 void | |
| 444 openFold(lnum, count) | |
| 445 linenr_T lnum; | |
| 446 long count; | |
| 447 { | |
| 448 setFoldRepeat(lnum, count, TRUE); | |
| 449 } | |
| 450 | |
| 451 /* openFoldRecurse() {{{2 */ | |
| 452 /* | |
| 453 * Open fold for current window at line "lnum" recursively. | |
| 454 */ | |
| 455 void | |
| 456 openFoldRecurse(lnum) | |
| 457 linenr_T lnum; | |
| 458 { | |
| 459 (void)setManualFold(lnum, TRUE, TRUE, NULL); | |
| 460 } | |
| 461 | |
| 462 /* foldOpenCursor() {{{2 */ | |
| 463 /* | |
| 464 * Open folds until the cursor line is not in a closed fold. | |
| 465 */ | |
| 466 void | |
| 467 foldOpenCursor() | |
| 468 { | |
| 469 int done; | |
| 470 | |
| 471 checkupdate(curwin); | |
| 472 if (hasAnyFolding(curwin)) | |
| 473 for (;;) | |
| 474 { | |
| 475 done = DONE_NOTHING; | |
| 476 (void)setManualFold(curwin->w_cursor.lnum, TRUE, FALSE, &done); | |
| 477 if (!(done & DONE_ACTION)) | |
| 478 break; | |
| 479 } | |
| 480 } | |
| 481 | |
| 482 /* newFoldLevel() {{{2 */ | |
| 483 /* | |
| 484 * Set new foldlevel for current window. | |
| 485 */ | |
| 486 void | |
| 487 newFoldLevel() | |
| 488 { | |
| 489 newFoldLevelWin(curwin); | |
| 490 | |
| 491 #ifdef FEAT_DIFF | |
| 492 if (foldmethodIsDiff(curwin) && curwin->w_p_scb) | |
| 493 { | |
| 494 win_T *wp; | |
| 495 | |
| 496 /* | |
| 497 * Set the same foldlevel in other windows in diff mode. | |
| 498 */ | |
| 499 FOR_ALL_WINDOWS(wp) | |
| 500 { | |
| 501 if (wp != curwin && foldmethodIsDiff(wp) && wp->w_p_scb) | |
| 502 { | |
| 503 wp->w_p_fdl = curwin->w_p_fdl; | |
| 504 newFoldLevelWin(wp); | |
| 505 } | |
| 506 } | |
| 507 } | |
| 508 #endif | |
| 509 } | |
| 510 | |
| 511 static void | |
| 512 newFoldLevelWin(wp) | |
| 513 win_T *wp; | |
| 514 { | |
| 515 fold_T *fp; | |
| 516 int i; | |
| 517 | |
| 518 checkupdate(wp); | |
| 519 if (wp->w_fold_manual) | |
| 520 { | |
| 521 /* Set all flags for the first level of folds to FD_LEVEL. Following | |
| 522 * manual open/close will then change the flags to FD_OPEN or | |
| 523 * FD_CLOSED for those folds that don't use 'foldlevel'. */ | |
| 524 fp = (fold_T *)wp->w_folds.ga_data; | |
| 525 for (i = 0; i < wp->w_folds.ga_len; ++i) | |
| 526 fp[i].fd_flags = FD_LEVEL; | |
| 527 wp->w_fold_manual = FALSE; | |
| 528 } | |
| 529 changed_window_setting_win(wp); | |
| 530 } | |
| 531 | |
| 532 /* foldCheckClose() {{{2 */ | |
| 533 /* | |
| 534 * Apply 'foldlevel' to all folds that don't contain the cursor. | |
| 535 */ | |
| 536 void | |
| 537 foldCheckClose() | |
| 538 { | |
| 539 if (*p_fcl != NUL) /* can only be "all" right now */ | |
| 540 { | |
| 541 checkupdate(curwin); | |
| 542 if (checkCloseRec(&curwin->w_folds, curwin->w_cursor.lnum, | |
| 543 (int)curwin->w_p_fdl)) | |
| 544 changed_window_setting(); | |
| 545 } | |
| 546 } | |
| 547 | |
| 548 /* checkCloseRec() {{{2 */ | |
| 549 static int | |
| 550 checkCloseRec(gap, lnum, level) | |
| 551 garray_T *gap; | |
| 552 linenr_T lnum; | |
| 553 int level; | |
| 554 { | |
| 555 fold_T *fp; | |
| 556 int retval = FALSE; | |
| 557 int i; | |
| 558 | |
| 559 fp = (fold_T *)gap->ga_data; | |
| 560 for (i = 0; i < gap->ga_len; ++i) | |
| 561 { | |
| 562 /* Only manually opened folds may need to be closed. */ | |
| 563 if (fp[i].fd_flags == FD_OPEN) | |
| 564 { | |
| 565 if (level <= 0 && (lnum < fp[i].fd_top | |
| 566 || lnum >= fp[i].fd_top + fp[i].fd_len)) | |
| 567 { | |
| 568 fp[i].fd_flags = FD_LEVEL; | |
| 569 retval = TRUE; | |
| 570 } | |
| 571 else | |
| 572 retval |= checkCloseRec(&fp[i].fd_nested, lnum - fp[i].fd_top, | |
| 573 level - 1); | |
| 574 } | |
| 575 } | |
| 576 return retval; | |
| 577 } | |
| 578 | |
| 579 /* foldCreateAllowed() {{{2 */ | |
| 580 /* | |
| 581 * Return TRUE if it's allowed to manually create or delete a fold. | |
| 582 * Give an error message and return FALSE if not. | |
| 583 */ | |
| 584 int | |
| 585 foldManualAllowed(create) | |
| 586 int create; | |
| 587 { | |
| 588 if (foldmethodIsManual(curwin) || foldmethodIsMarker(curwin)) | |
| 589 return TRUE; | |
| 590 if (create) | |
| 591 EMSG(_("E350: Cannot create fold with current 'foldmethod'")); | |
| 592 else | |
| 593 EMSG(_("E351: Cannot delete fold with current 'foldmethod'")); | |
| 594 return FALSE; | |
| 595 } | |
| 596 | |
| 597 /* foldCreate() {{{2 */ | |
| 598 /* | |
| 599 * Create a fold from line "start" to line "end" (inclusive) in the current | |
| 600 * window. | |
| 601 */ | |
| 602 void | |
| 603 foldCreate(start, end) | |
| 604 linenr_T start; | |
| 605 linenr_T end; | |
| 606 { | |
| 607 fold_T *fp; | |
| 608 garray_T *gap; | |
| 609 garray_T fold_ga; | |
| 610 int i, j; | |
| 611 int cont; | |
| 612 int use_level = FALSE; | |
| 613 int closed = FALSE; | |
| 614 int level = 0; | |
| 615 linenr_T start_rel = start; | |
| 616 linenr_T end_rel = end; | |
| 617 | |
| 618 if (start > end) | |
| 619 { | |
| 620 /* reverse the range */ | |
| 621 end = start_rel; | |
| 622 start = end_rel; | |
| 623 start_rel = start; | |
| 624 end_rel = end; | |
| 625 } | |
| 626 | |
| 627 /* When 'foldmethod' is "marker" add markers, which creates the folds. */ | |
| 628 if (foldmethodIsMarker(curwin)) | |
| 629 { | |
| 630 foldCreateMarkers(start, end); | |
| 631 return; | |
| 632 } | |
| 633 | |
| 634 checkupdate(curwin); | |
| 635 | |
| 636 /* Find the place to insert the new fold. */ | |
| 637 gap = &curwin->w_folds; | |
| 638 for (;;) | |
| 639 { | |
| 640 if (!foldFind(gap, start_rel, &fp)) | |
| 641 break; | |
| 642 if (fp->fd_top + fp->fd_len > end_rel) | |
| 643 { | |
| 644 /* New fold is completely inside this fold: Go one level deeper. */ | |
| 645 gap = &fp->fd_nested; | |
| 646 start_rel -= fp->fd_top; | |
| 647 end_rel -= fp->fd_top; | |
| 648 if (use_level || fp->fd_flags == FD_LEVEL) | |
| 649 { | |
| 650 use_level = TRUE; | |
| 651 if (level >= curwin->w_p_fdl) | |
| 652 closed = TRUE; | |
| 653 } | |
| 654 else if (fp->fd_flags == FD_CLOSED) | |
| 655 closed = TRUE; | |
| 656 ++level; | |
| 657 } | |
| 658 else | |
| 659 { | |
| 660 /* This fold and new fold overlap: Insert here and move some folds | |
| 661 * inside the new fold. */ | |
| 662 break; | |
| 663 } | |
| 664 } | |
| 665 | |
| 666 i = (int)(fp - (fold_T *)gap->ga_data); | |
| 667 if (ga_grow(gap, 1) == OK) | |
| 668 { | |
| 669 fp = (fold_T *)gap->ga_data + i; | |
| 670 ga_init2(&fold_ga, (int)sizeof(fold_T), 10); | |
| 671 | |
| 672 /* Count number of folds that will be contained in the new fold. */ | |
| 673 for (cont = 0; i + cont < gap->ga_len; ++cont) | |
| 674 if (fp[cont].fd_top > end_rel) | |
| 675 break; | |
| 676 if (cont > 0 && ga_grow(&fold_ga, cont) == OK) | |
| 677 { | |
| 678 /* If the first fold starts before the new fold, let the new fold | |
| 679 * start there. Otherwise the existing fold would change. */ | |
| 680 if (start_rel > fp->fd_top) | |
| 681 start_rel = fp->fd_top; | |
| 682 | |
| 683 /* When last contained fold isn't completely contained, adjust end | |
| 684 * of new fold. */ | |
| 685 if (end_rel < fp[cont - 1].fd_top + fp[cont - 1].fd_len - 1) | |
| 686 end_rel = fp[cont - 1].fd_top + fp[cont - 1].fd_len - 1; | |
| 687 /* Move contained folds to inside new fold. */ | |
| 688 mch_memmove(fold_ga.ga_data, fp, sizeof(fold_T) * cont); | |
| 689 fold_ga.ga_len += cont; | |
| 690 i += cont; | |
| 691 | |
| 692 /* Adjust line numbers in contained folds to be relative to the | |
| 693 * new fold. */ | |
| 694 for (j = 0; j < cont; ++j) | |
| 695 ((fold_T *)fold_ga.ga_data)[j].fd_top -= start_rel; | |
| 696 } | |
| 697 /* Move remaining entries to after the new fold. */ | |
| 698 if (i < gap->ga_len) | |
| 699 mch_memmove(fp + 1, (fold_T *)gap->ga_data + i, | |
| 700 sizeof(fold_T) * (gap->ga_len - i)); | |
| 701 gap->ga_len = gap->ga_len + 1 - cont; | |
| 702 | |
| 703 /* insert new fold */ | |
| 704 fp->fd_nested = fold_ga; | |
| 705 fp->fd_top = start_rel; | |
| 706 fp->fd_len = end_rel - start_rel + 1; | |
| 707 | |
| 708 /* We want the new fold to be closed. If it would remain open because | |
| 709 * of using 'foldlevel', need to adjust fd_flags of containing folds. | |
| 710 */ | |
| 711 if (use_level && !closed && level < curwin->w_p_fdl) | |
| 712 closeFold(start, 1L); | |
| 713 if (!use_level) | |
| 714 curwin->w_fold_manual = TRUE; | |
| 715 fp->fd_flags = FD_CLOSED; | |
| 716 fp->fd_small = MAYBE; | |
| 717 | |
| 718 /* redraw */ | |
| 719 changed_window_setting(); | |
| 720 } | |
| 721 } | |
| 722 | |
| 723 /* deleteFold() {{{2 */ | |
| 724 /* | |
| 725 * Delete a fold at line "start" in the current window. | |
| 726 * When "end" is not 0, delete all folds from "start" to "end". | |
| 727 * When "recursive" is TRUE delete recursively. | |
| 728 */ | |
| 729 void | |
| 730 deleteFold(start, end, recursive, had_visual) | |
| 731 linenr_T start; | |
| 732 linenr_T end; | |
| 733 int recursive; | |
| 734 int had_visual; /* TRUE when Visual selection used */ | |
| 735 { | |
| 736 garray_T *gap; | |
| 737 fold_T *fp; | |
| 738 garray_T *found_ga; | |
| 739 fold_T *found_fp = NULL; | |
| 740 linenr_T found_off = 0; | |
| 1780 | 741 int use_level; |
| 7 | 742 int maybe_small = FALSE; |
| 743 int level = 0; | |
| 744 linenr_T lnum = start; | |
| 745 linenr_T lnum_off; | |
| 746 int did_one = FALSE; | |
| 747 linenr_T first_lnum = MAXLNUM; | |
| 748 linenr_T last_lnum = 0; | |
| 749 | |
| 750 checkupdate(curwin); | |
| 751 | |
| 752 while (lnum <= end) | |
| 753 { | |
| 754 /* Find the deepest fold for "start". */ | |
| 755 gap = &curwin->w_folds; | |
| 756 found_ga = NULL; | |
| 757 lnum_off = 0; | |
| 1780 | 758 use_level = FALSE; |
| 7 | 759 for (;;) |
| 760 { | |
| 761 if (!foldFind(gap, lnum - lnum_off, &fp)) | |
| 762 break; | |
| 763 /* lnum is inside this fold, remember info */ | |
| 764 found_ga = gap; | |
| 765 found_fp = fp; | |
| 766 found_off = lnum_off; | |
| 767 | |
| 768 /* if "lnum" is folded, don't check nesting */ | |
| 769 if (check_closed(curwin, fp, &use_level, level, | |
| 770 &maybe_small, lnum_off)) | |
| 771 break; | |
| 772 | |
| 773 /* check nested folds */ | |
| 774 gap = &fp->fd_nested; | |
| 775 lnum_off += fp->fd_top; | |
| 776 ++level; | |
| 777 } | |
| 778 if (found_ga == NULL) | |
| 779 { | |
| 780 ++lnum; | |
| 781 } | |
| 782 else | |
| 783 { | |
| 784 lnum = found_fp->fd_top + found_fp->fd_len + found_off; | |
| 785 | |
| 786 if (foldmethodIsManual(curwin)) | |
| 787 deleteFoldEntry(found_ga, | |
| 788 (int)(found_fp - (fold_T *)found_ga->ga_data), recursive); | |
| 789 else | |
| 790 { | |
| 1780 | 791 if (first_lnum > found_fp->fd_top + found_off) |
| 792 first_lnum = found_fp->fd_top + found_off; | |
| 793 if (last_lnum < lnum) | |
| 7 | 794 last_lnum = lnum; |
| 1780 | 795 if (!did_one) |
| 796 parseMarker(curwin); | |
| 7 | 797 deleteFoldMarkers(found_fp, recursive, found_off); |
| 798 } | |
| 1780 | 799 did_one = TRUE; |
| 7 | 800 |
| 801 /* redraw window */ | |
| 802 changed_window_setting(); | |
| 803 } | |
| 804 } | |
| 805 if (!did_one) | |
| 806 { | |
| 807 EMSG(_(e_nofold)); | |
| 808 /* Force a redraw to remove the Visual highlighting. */ | |
| 809 if (had_visual) | |
| 810 redraw_curbuf_later(INVERTED); | |
| 811 } | |
| 1780 | 812 else |
| 813 /* Deleting markers may make cursor column invalid. */ | |
| 814 check_cursor_col(); | |
| 815 | |
| 7 | 816 if (last_lnum > 0) |
| 817 changed_lines(first_lnum, (colnr_T)0, last_lnum, 0L); | |
| 818 } | |
| 819 | |
| 820 /* clearFolding() {{{2 */ | |
| 821 /* | |
| 822 * Remove all folding for window "win". | |
| 823 */ | |
| 824 void | |
| 825 clearFolding(win) | |
| 826 win_T *win; | |
| 827 { | |
| 828 deleteFoldRecurse(&win->w_folds); | |
| 829 win->w_foldinvalid = FALSE; | |
| 830 } | |
| 831 | |
| 832 /* foldUpdate() {{{2 */ | |
| 833 /* | |
| 834 * Update folds for changes in the buffer of a window. | |
| 835 * Note that inserted/deleted lines must have already been taken care of by | |
| 836 * calling foldMarkAdjust(). | |
| 837 * The changes in lines from top to bot (inclusive). | |
| 838 */ | |
| 839 void | |
| 840 foldUpdate(wp, top, bot) | |
| 841 win_T *wp; | |
| 842 linenr_T top; | |
| 843 linenr_T bot; | |
| 844 { | |
| 845 fold_T *fp; | |
| 846 | |
| 847 /* Mark all folds from top to bot as maybe-small. */ | |
|
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848 (void)foldFind(&curwin->w_folds, top, &fp); |
| 7 | 849 while (fp < (fold_T *)curwin->w_folds.ga_data + curwin->w_folds.ga_len |
| 850 && fp->fd_top < bot) | |
| 851 { | |
| 852 fp->fd_small = MAYBE; | |
| 853 ++fp; | |
| 854 } | |
| 855 | |
| 856 if (foldmethodIsIndent(wp) | |
| 857 || foldmethodIsExpr(wp) | |
| 858 || foldmethodIsMarker(wp) | |
| 859 #ifdef FEAT_DIFF | |
| 860 || foldmethodIsDiff(wp) | |
| 861 #endif | |
| 862 || foldmethodIsSyntax(wp)) | |
| 1424 | 863 { |
| 864 int save_got_int = got_int; | |
| 865 | |
| 866 /* reset got_int here, otherwise it won't work */ | |
| 867 got_int = FALSE; | |
| 7 | 868 foldUpdateIEMS(wp, top, bot); |
| 1424 | 869 got_int |= save_got_int; |
| 870 } | |
| 7 | 871 } |
| 872 | |
| 873 /* foldUpdateAll() {{{2 */ | |
| 874 /* | |
| 875 * Update all lines in a window for folding. | |
| 876 * Used when a fold setting changes or after reloading the buffer. | |
| 877 * The actual updating is postponed until fold info is used, to avoid doing | |
| 878 * every time a setting is changed or a syntax item is added. | |
| 879 */ | |
| 880 void | |
| 881 foldUpdateAll(win) | |
| 882 win_T *win; | |
| 883 { | |
| 884 win->w_foldinvalid = TRUE; | |
| 885 redraw_win_later(win, NOT_VALID); | |
| 886 } | |
| 887 | |
| 888 /* foldMoveTo() {{{2 */ | |
| 889 /* | |
| 890 * If "updown" is FALSE: Move to the start or end of the fold. | |
| 891 * If "updown" is TRUE: move to fold at the same level. | |
| 892 * If not moved return FAIL. | |
| 893 */ | |
| 894 int | |
| 895 foldMoveTo(updown, dir, count) | |
| 896 int updown; | |
| 897 int dir; /* FORWARD or BACKWARD */ | |
| 898 long count; | |
| 899 { | |
| 900 long n; | |
| 901 int retval = FAIL; | |
| 902 linenr_T lnum_off; | |
| 903 linenr_T lnum_found; | |
| 904 linenr_T lnum; | |
| 905 int use_level; | |
| 906 int maybe_small; | |
| 907 garray_T *gap; | |
| 908 fold_T *fp; | |
| 909 int level; | |
| 910 int last; | |
| 911 | |
| 36 | 912 checkupdate(curwin); |
| 913 | |
| 7 | 914 /* Repeat "count" times. */ |
| 915 for (n = 0; n < count; ++n) | |
| 916 { | |
| 917 /* Find nested folds. Stop when a fold is closed. The deepest fold | |
| 918 * that moves the cursor is used. */ | |
| 919 lnum_off = 0; | |
| 920 gap = &curwin->w_folds; | |
| 921 use_level = FALSE; | |
| 922 maybe_small = FALSE; | |
| 923 lnum_found = curwin->w_cursor.lnum; | |
| 924 level = 0; | |
| 925 last = FALSE; | |
| 926 for (;;) | |
| 927 { | |
| 928 if (!foldFind(gap, curwin->w_cursor.lnum - lnum_off, &fp)) | |
| 929 { | |
| 930 if (!updown) | |
| 931 break; | |
| 932 | |
| 933 /* When moving up, consider a fold above the cursor; when | |
| 934 * moving down consider a fold below the cursor. */ | |
| 935 if (dir == FORWARD) | |
| 936 { | |
| 937 if (fp - (fold_T *)gap->ga_data >= gap->ga_len) | |
| 938 break; | |
| 939 --fp; | |
| 940 } | |
| 941 else | |
| 942 { | |
| 943 if (fp == (fold_T *)gap->ga_data) | |
| 944 break; | |
| 945 } | |
| 946 /* don't look for contained folds, they will always move | |
| 947 * the cursor too far. */ | |
| 948 last = TRUE; | |
| 949 } | |
| 950 | |
| 951 if (!last) | |
| 952 { | |
| 953 /* Check if this fold is closed. */ | |
| 954 if (check_closed(curwin, fp, &use_level, level, | |
| 955 &maybe_small, lnum_off)) | |
| 956 last = TRUE; | |
| 957 | |
| 958 /* "[z" and "]z" stop at closed fold */ | |
| 959 if (last && !updown) | |
| 960 break; | |
| 961 } | |
| 962 | |
| 963 if (updown) | |
| 964 { | |
| 965 if (dir == FORWARD) | |
| 966 { | |
| 967 /* to start of next fold if there is one */ | |
| 968 if (fp + 1 - (fold_T *)gap->ga_data < gap->ga_len) | |
| 969 { | |
| 970 lnum = fp[1].fd_top + lnum_off; | |
| 971 if (lnum > curwin->w_cursor.lnum) | |
| 972 lnum_found = lnum; | |
| 973 } | |
| 974 } | |
| 975 else | |
| 976 { | |
| 977 /* to end of previous fold if there is one */ | |
| 978 if (fp > (fold_T *)gap->ga_data) | |
| 979 { | |
| 980 lnum = fp[-1].fd_top + lnum_off + fp[-1].fd_len - 1; | |
| 981 if (lnum < curwin->w_cursor.lnum) | |
| 982 lnum_found = lnum; | |
| 983 } | |
| 984 } | |
| 985 } | |
| 986 else | |
| 987 { | |
| 988 /* Open fold found, set cursor to its start/end and then check | |
| 989 * nested folds. */ | |
| 990 if (dir == FORWARD) | |
| 991 { | |
| 992 lnum = fp->fd_top + lnum_off + fp->fd_len - 1; | |
| 993 if (lnum > curwin->w_cursor.lnum) | |
| 994 lnum_found = lnum; | |
| 995 } | |
| 996 else | |
| 997 { | |
| 998 lnum = fp->fd_top + lnum_off; | |
| 999 if (lnum < curwin->w_cursor.lnum) | |
| 1000 lnum_found = lnum; | |
| 1001 } | |
| 1002 } | |
| 1003 | |
| 1004 if (last) | |
| 1005 break; | |
| 1006 | |
| 1007 /* Check nested folds (if any). */ | |
| 1008 gap = &fp->fd_nested; | |
| 1009 lnum_off += fp->fd_top; | |
| 1010 ++level; | |
| 1011 } | |
| 1012 if (lnum_found != curwin->w_cursor.lnum) | |
| 1013 { | |
| 1014 if (retval == FAIL) | |
| 1015 setpcmark(); | |
| 1016 curwin->w_cursor.lnum = lnum_found; | |
| 1017 curwin->w_cursor.col = 0; | |
| 1018 retval = OK; | |
| 1019 } | |
| 1020 else | |
| 1021 break; | |
| 1022 } | |
| 1023 | |
| 1024 return retval; | |
| 1025 } | |
| 1026 | |
| 1027 /* foldInitWin() {{{2 */ | |
| 1028 /* | |
| 1029 * Init the fold info in a new window. | |
| 1030 */ | |
| 1031 void | |
| 3263 | 1032 foldInitWin(new_win) |
| 1033 win_T *new_win; | |
| 7 | 1034 { |
| 3263 | 1035 ga_init2(&new_win->w_folds, (int)sizeof(fold_T), 10); |
| 7 | 1036 } |
| 1037 | |
| 1038 /* find_wl_entry() {{{2 */ | |
| 1039 /* | |
| 1040 * Find an entry in the win->w_lines[] array for buffer line "lnum". | |
| 1041 * Only valid entries are considered (for entries where wl_valid is FALSE the | |
| 1042 * line number can be wrong). | |
| 1043 * Returns index of entry or -1 if not found. | |
| 1044 */ | |
| 1045 int | |
| 1046 find_wl_entry(win, lnum) | |
| 1047 win_T *win; | |
| 1048 linenr_T lnum; | |
| 1049 { | |
| 1050 int i; | |
| 1051 | |
|
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1052 for (i = 0; i < win->w_lines_valid; ++i) |
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1053 if (win->w_lines[i].wl_valid) |
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1054 { |
|
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1055 if (lnum < win->w_lines[i].wl_lnum) |
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1056 return -1; |
|
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1057 if (lnum <= win->w_lines[i].wl_lastlnum) |
|
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1058 return i; |
|
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1059 } |
| 7 | 1060 return -1; |
| 1061 } | |
| 1062 | |
| 1063 /* foldAdjustVisual() {{{2 */ | |
| 1064 /* | |
| 1065 * Adjust the Visual area to include any fold at the start or end completely. | |
| 1066 */ | |
| 1067 void | |
| 1068 foldAdjustVisual() | |
| 1069 { | |
| 1070 pos_T *start, *end; | |
| 1071 char_u *ptr; | |
| 1072 | |
| 1073 if (!VIsual_active || !hasAnyFolding(curwin)) | |
| 1074 return; | |
| 1075 | |
| 1076 if (ltoreq(VIsual, curwin->w_cursor)) | |
| 1077 { | |
| 1078 start = &VIsual; | |
| 1079 end = &curwin->w_cursor; | |
| 1080 } | |
| 1081 else | |
| 1082 { | |
| 1083 start = &curwin->w_cursor; | |
| 1084 end = &VIsual; | |
| 1085 } | |
| 1086 if (hasFolding(start->lnum, &start->lnum, NULL)) | |
| 1087 start->col = 0; | |
| 1088 if (hasFolding(end->lnum, NULL, &end->lnum)) | |
| 1089 { | |
| 1090 ptr = ml_get(end->lnum); | |
| 1091 end->col = (colnr_T)STRLEN(ptr); | |
| 1092 if (end->col > 0 && *p_sel == 'o') | |
| 1093 --end->col; | |
| 1094 #ifdef FEAT_MBYTE | |
| 1095 /* prevent cursor from moving on the trail byte */ | |
| 1096 if (has_mbyte) | |
| 1097 mb_adjust_cursor(); | |
| 1098 #endif | |
| 1099 } | |
| 1100 } | |
| 1101 | |
| 1102 /* cursor_foldstart() {{{2 */ | |
| 1103 /* | |
| 1104 * Move the cursor to the first line of a closed fold. | |
| 1105 */ | |
| 1106 void | |
| 1107 foldAdjustCursor() | |
| 1108 { | |
| 1109 (void)hasFolding(curwin->w_cursor.lnum, &curwin->w_cursor.lnum, NULL); | |
| 1110 } | |
| 1111 | |
| 1112 /* Internal functions for "fold_T" {{{1 */ | |
| 1113 /* cloneFoldGrowArray() {{{2 */ | |
| 1114 /* | |
| 1115 * Will "clone" (i.e deep copy) a garray_T of folds. | |
| 1116 * | |
| 1117 * Return FAIL if the operation cannot be completed, otherwise OK. | |
| 1118 */ | |
| 1119 void | |
| 1120 cloneFoldGrowArray(from, to) | |
| 1121 garray_T *from; | |
| 1122 garray_T *to; | |
| 1123 { | |
| 1124 int i; | |
| 1125 fold_T *from_p; | |
| 1126 fold_T *to_p; | |
| 1127 | |
| 1128 ga_init2(to, from->ga_itemsize, from->ga_growsize); | |
| 1129 if (from->ga_len == 0 || ga_grow(to, from->ga_len) == FAIL) | |
| 1130 return; | |
| 1131 | |
| 1132 from_p = (fold_T *)from->ga_data; | |
| 1133 to_p = (fold_T *)to->ga_data; | |
| 1134 | |
| 1135 for (i = 0; i < from->ga_len; i++) | |
| 1136 { | |
| 1137 to_p->fd_top = from_p->fd_top; | |
| 1138 to_p->fd_len = from_p->fd_len; | |
| 1139 to_p->fd_flags = from_p->fd_flags; | |
| 1140 to_p->fd_small = from_p->fd_small; | |
| 1141 cloneFoldGrowArray(&from_p->fd_nested, &to_p->fd_nested); | |
| 1142 ++to->ga_len; | |
| 1143 ++from_p; | |
| 1144 ++to_p; | |
| 1145 } | |
| 1146 } | |
| 1147 | |
| 1148 /* foldFind() {{{2 */ | |
| 1149 /* | |
| 1150 * Search for line "lnum" in folds of growarray "gap". | |
| 1151 * Set *fpp to the fold struct for the fold that contains "lnum" or | |
| 1152 * the first fold below it (careful: it can be beyond the end of the array!). | |
| 1153 * Returns FALSE when there is no fold that contains "lnum". | |
| 1154 */ | |
| 1155 static int | |
| 1156 foldFind(gap, lnum, fpp) | |
| 1157 garray_T *gap; | |
| 1158 linenr_T lnum; | |
| 1159 fold_T **fpp; | |
| 1160 { | |
| 1161 linenr_T low, high; | |
| 1162 fold_T *fp; | |
| 1163 int i; | |
| 1164 | |
| 1165 /* | |
| 1166 * Perform a binary search. | |
| 1167 * "low" is lowest index of possible match. | |
| 1168 * "high" is highest index of possible match. | |
| 1169 */ | |
| 1170 fp = (fold_T *)gap->ga_data; | |
| 1171 low = 0; | |
| 1172 high = gap->ga_len - 1; | |
| 1173 while (low <= high) | |
| 1174 { | |
| 1175 i = (low + high) / 2; | |
| 1176 if (fp[i].fd_top > lnum) | |
| 1177 /* fold below lnum, adjust high */ | |
| 1178 high = i - 1; | |
| 1179 else if (fp[i].fd_top + fp[i].fd_len <= lnum) | |
| 1180 /* fold above lnum, adjust low */ | |
| 1181 low = i + 1; | |
| 1182 else | |
| 1183 { | |
| 1184 /* lnum is inside this fold */ | |
| 1185 *fpp = fp + i; | |
| 1186 return TRUE; | |
| 1187 } | |
| 1188 } | |
| 1189 *fpp = fp + low; | |
| 1190 return FALSE; | |
| 1191 } | |
| 1192 | |
| 1193 /* foldLevelWin() {{{2 */ | |
| 1194 /* | |
| 1195 * Return fold level at line number "lnum" in window "wp". | |
| 1196 */ | |
| 1197 static int | |
| 1198 foldLevelWin(wp, lnum) | |
| 1199 win_T *wp; | |
| 1200 linenr_T lnum; | |
| 1201 { | |
| 1202 fold_T *fp; | |
| 1203 linenr_T lnum_rel = lnum; | |
| 1204 int level = 0; | |
| 1205 garray_T *gap; | |
| 1206 | |
| 1207 /* Recursively search for a fold that contains "lnum". */ | |
| 1208 gap = &wp->w_folds; | |
| 1209 for (;;) | |
| 1210 { | |
| 1211 if (!foldFind(gap, lnum_rel, &fp)) | |
| 1212 break; | |
| 1213 /* Check nested folds. Line number is relative to containing fold. */ | |
| 1214 gap = &fp->fd_nested; | |
| 1215 lnum_rel -= fp->fd_top; | |
| 1216 ++level; | |
| 1217 } | |
| 1218 | |
| 1219 return level; | |
| 1220 } | |
| 1221 | |
| 1222 /* checkupdate() {{{2 */ | |
| 1223 /* | |
| 1224 * Check if the folds in window "wp" are invalid and update them if needed. | |
| 1225 */ | |
| 1226 static void | |
| 1227 checkupdate(wp) | |
| 1228 win_T *wp; | |
| 1229 { | |
| 1230 if (wp->w_foldinvalid) | |
| 1231 { | |
| 1232 foldUpdate(wp, (linenr_T)1, (linenr_T)MAXLNUM); /* will update all */ | |
| 1233 wp->w_foldinvalid = FALSE; | |
| 1234 } | |
| 1235 } | |
| 1236 | |
| 1237 /* setFoldRepeat() {{{2 */ | |
| 1238 /* | |
| 1239 * Open or close fold for current window at line "lnum". | |
| 1240 * Repeat "count" times. | |
| 1241 */ | |
| 1242 static void | |
| 1757 | 1243 setFoldRepeat(lnum, count, do_open) |
| 7 | 1244 linenr_T lnum; |
| 1245 long count; | |
| 1757 | 1246 int do_open; |
| 7 | 1247 { |
| 1248 int done; | |
| 1249 long n; | |
| 1250 | |
| 1251 for (n = 0; n < count; ++n) | |
| 1252 { | |
| 1253 done = DONE_NOTHING; | |
| 1757 | 1254 (void)setManualFold(lnum, do_open, FALSE, &done); |
| 7 | 1255 if (!(done & DONE_ACTION)) |
| 1256 { | |
| 1257 /* Only give an error message when no fold could be opened. */ | |
| 1258 if (n == 0 && !(done & DONE_FOLD)) | |
| 1259 EMSG(_(e_nofold)); | |
| 1260 break; | |
| 1261 } | |
| 1262 } | |
| 1263 } | |
| 1264 | |
| 1265 /* setManualFold() {{{2 */ | |
| 1266 /* | |
| 1267 * Open or close the fold in the current window which contains "lnum". | |
| 1268 * Also does this for other windows in diff mode when needed. | |
| 1269 */ | |
| 1270 static linenr_T | |
| 1271 setManualFold(lnum, opening, recurse, donep) | |
| 1272 linenr_T lnum; | |
| 1273 int opening; /* TRUE when opening, FALSE when closing */ | |
| 1274 int recurse; /* TRUE when closing/opening recursive */ | |
| 1275 int *donep; | |
| 1276 { | |
| 1277 #ifdef FEAT_DIFF | |
| 1278 if (foldmethodIsDiff(curwin) && curwin->w_p_scb) | |
| 1279 { | |
| 1280 win_T *wp; | |
| 1281 linenr_T dlnum; | |
| 1282 | |
| 1283 /* | |
| 1284 * Do the same operation in other windows in diff mode. Calculate the | |
| 1285 * line number from the diffs. | |
| 1286 */ | |
| 1287 FOR_ALL_WINDOWS(wp) | |
| 1288 { | |
| 1289 if (wp != curwin && foldmethodIsDiff(wp) && wp->w_p_scb) | |
| 1290 { | |
| 1291 dlnum = diff_lnum_win(curwin->w_cursor.lnum, wp); | |
| 1292 if (dlnum != 0) | |
| 1293 (void)setManualFoldWin(wp, dlnum, opening, recurse, NULL); | |
| 1294 } | |
| 1295 } | |
| 1296 } | |
| 1297 #endif | |
| 1298 | |
| 1299 return setManualFoldWin(curwin, lnum, opening, recurse, donep); | |
| 1300 } | |
| 1301 | |
| 1302 /* setManualFoldWin() {{{2 */ | |
| 1303 /* | |
| 1304 * Open or close the fold in window "wp" which contains "lnum". | |
| 1305 * "donep", when not NULL, points to flag that is set to DONE_FOLD when some | |
| 1306 * fold was found and to DONE_ACTION when some fold was opened or closed. | |
| 1307 * When "donep" is NULL give an error message when no fold was found for | |
| 1308 * "lnum", but only if "wp" is "curwin". | |
| 1309 * Return the line number of the next line that could be closed. | |
| 1310 * It's only valid when "opening" is TRUE! | |
| 1311 */ | |
| 1312 static linenr_T | |
| 1313 setManualFoldWin(wp, lnum, opening, recurse, donep) | |
| 1314 win_T *wp; | |
| 1315 linenr_T lnum; | |
| 1316 int opening; /* TRUE when opening, FALSE when closing */ | |
| 1317 int recurse; /* TRUE when closing/opening recursive */ | |
| 1318 int *donep; | |
| 1319 { | |
| 1320 fold_T *fp; | |
| 1321 fold_T *fp2; | |
| 1322 fold_T *found = NULL; | |
| 1323 int j; | |
| 1324 int level = 0; | |
| 1325 int use_level = FALSE; | |
| 1326 int found_fold = FALSE; | |
| 1327 garray_T *gap; | |
| 1328 linenr_T next = MAXLNUM; | |
| 1329 linenr_T off = 0; | |
| 1330 int done = 0; | |
| 1331 | |
| 1332 checkupdate(wp); | |
| 1333 | |
| 1334 /* | |
| 1335 * Find the fold, open or close it. | |
| 1336 */ | |
| 1337 gap = &wp->w_folds; | |
| 1338 for (;;) | |
| 1339 { | |
| 1340 if (!foldFind(gap, lnum, &fp)) | |
| 1341 { | |
| 1342 /* If there is a following fold, continue there next time. */ | |
| 1343 if (fp < (fold_T *)gap->ga_data + gap->ga_len) | |
| 1344 next = fp->fd_top + off; | |
| 1345 break; | |
| 1346 } | |
| 1347 | |
| 1348 /* lnum is inside this fold */ | |
| 1349 found_fold = TRUE; | |
| 1350 | |
| 1351 /* If there is a following fold, continue there next time. */ | |
| 1352 if (fp + 1 < (fold_T *)gap->ga_data + gap->ga_len) | |
| 1353 next = fp[1].fd_top + off; | |
| 1354 | |
| 1355 /* Change from level-dependent folding to manual. */ | |
| 1356 if (use_level || fp->fd_flags == FD_LEVEL) | |
| 1357 { | |
| 1358 use_level = TRUE; | |
| 1359 if (level >= wp->w_p_fdl) | |
| 1360 fp->fd_flags = FD_CLOSED; | |
| 1361 else | |
| 1362 fp->fd_flags = FD_OPEN; | |
| 1363 fp2 = (fold_T *)fp->fd_nested.ga_data; | |
| 1364 for (j = 0; j < fp->fd_nested.ga_len; ++j) | |
| 1365 fp2[j].fd_flags = FD_LEVEL; | |
| 1366 } | |
| 1367 | |
| 1368 /* Simple case: Close recursively means closing the fold. */ | |
| 1369 if (!opening && recurse) | |
| 1370 { | |
| 1371 if (fp->fd_flags != FD_CLOSED) | |
| 1372 { | |
| 1373 done |= DONE_ACTION; | |
| 1374 fp->fd_flags = FD_CLOSED; | |
| 1375 } | |
| 1376 } | |
| 1377 else if (fp->fd_flags == FD_CLOSED) | |
| 1378 { | |
| 1379 /* When opening, open topmost closed fold. */ | |
| 1380 if (opening) | |
| 1381 { | |
| 1382 fp->fd_flags = FD_OPEN; | |
| 1383 done |= DONE_ACTION; | |
| 1384 if (recurse) | |
| 1385 foldOpenNested(fp); | |
| 1386 } | |
| 1387 break; | |
| 1388 } | |
| 1389 | |
| 1390 /* fold is open, check nested folds */ | |
| 1391 found = fp; | |
| 1392 gap = &fp->fd_nested; | |
| 1393 lnum -= fp->fd_top; | |
| 1394 off += fp->fd_top; | |
| 1395 ++level; | |
| 1396 } | |
| 1397 if (found_fold) | |
| 1398 { | |
| 1399 /* When closing and not recurse, close deepest open fold. */ | |
| 1400 if (!opening && found != NULL) | |
| 1401 { | |
| 1402 found->fd_flags = FD_CLOSED; | |
| 1403 done |= DONE_ACTION; | |
| 1404 } | |
| 1405 wp->w_fold_manual = TRUE; | |
| 1406 if (done & DONE_ACTION) | |
| 1407 changed_window_setting_win(wp); | |
| 1408 done |= DONE_FOLD; | |
| 1409 } | |
| 1410 else if (donep == NULL && wp == curwin) | |
| 1411 EMSG(_(e_nofold)); | |
| 1412 | |
| 1413 if (donep != NULL) | |
| 1414 *donep |= done; | |
| 1415 | |
| 1416 return next; | |
| 1417 } | |
| 1418 | |
| 1419 /* foldOpenNested() {{{2 */ | |
| 1420 /* | |
| 1421 * Open all nested folds in fold "fpr" recursively. | |
| 1422 */ | |
| 1423 static void | |
| 1424 foldOpenNested(fpr) | |
| 1425 fold_T *fpr; | |
| 1426 { | |
| 1427 int i; | |
| 1428 fold_T *fp; | |
| 1429 | |
| 1430 fp = (fold_T *)fpr->fd_nested.ga_data; | |
| 1431 for (i = 0; i < fpr->fd_nested.ga_len; ++i) | |
| 1432 { | |
| 1433 foldOpenNested(&fp[i]); | |
| 1434 fp[i].fd_flags = FD_OPEN; | |
| 1435 } | |
| 1436 } | |
| 1437 | |
| 1438 /* deleteFoldEntry() {{{2 */ | |
| 1439 /* | |
| 1440 * Delete fold "idx" from growarray "gap". | |
| 1441 * When "recursive" is TRUE also delete all the folds contained in it. | |
| 1442 * When "recursive" is FALSE contained folds are moved one level up. | |
| 1443 */ | |
| 1444 static void | |
| 1445 deleteFoldEntry(gap, idx, recursive) | |
| 1446 garray_T *gap; | |
| 1447 int idx; | |
| 1448 int recursive; | |
| 1449 { | |
| 1450 fold_T *fp; | |
| 1451 int i; | |
| 1452 long moved; | |
| 1453 fold_T *nfp; | |
| 1454 | |
| 1455 fp = (fold_T *)gap->ga_data + idx; | |
| 1456 if (recursive || fp->fd_nested.ga_len == 0) | |
| 1457 { | |
| 1458 /* recursively delete the contained folds */ | |
| 1459 deleteFoldRecurse(&fp->fd_nested); | |
| 1460 --gap->ga_len; | |
| 1461 if (idx < gap->ga_len) | |
| 1462 mch_memmove(fp, fp + 1, sizeof(fold_T) * (gap->ga_len - idx)); | |
| 1463 } | |
| 1464 else | |
| 1465 { | |
| 3028 | 1466 /* Move nested folds one level up, to overwrite the fold that is |
| 7 | 1467 * deleted. */ |
| 1468 moved = fp->fd_nested.ga_len; | |
| 1469 if (ga_grow(gap, (int)(moved - 1)) == OK) | |
| 1470 { | |
| 3028 | 1471 /* Get "fp" again, the array may have been reallocated. */ |
| 1472 fp = (fold_T *)gap->ga_data + idx; | |
| 1473 | |
| 7 | 1474 /* adjust fd_top and fd_flags for the moved folds */ |
| 1475 nfp = (fold_T *)fp->fd_nested.ga_data; | |
| 1476 for (i = 0; i < moved; ++i) | |
| 1477 { | |
| 1478 nfp[i].fd_top += fp->fd_top; | |
| 1479 if (fp->fd_flags == FD_LEVEL) | |
| 1480 nfp[i].fd_flags = FD_LEVEL; | |
| 1481 if (fp->fd_small == MAYBE) | |
| 1482 nfp[i].fd_small = MAYBE; | |
| 1483 } | |
| 1484 | |
| 1485 /* move the existing folds down to make room */ | |
| 3028 | 1486 if (idx + 1 < gap->ga_len) |
| 7 | 1487 mch_memmove(fp + moved, fp + 1, |
| 3028 | 1488 sizeof(fold_T) * (gap->ga_len - (idx + 1))); |
| 7 | 1489 /* move the contained folds one level up */ |
| 1490 mch_memmove(fp, nfp, (size_t)(sizeof(fold_T) * moved)); | |
| 1491 vim_free(nfp); | |
| 1492 gap->ga_len += moved - 1; | |
| 1493 } | |
| 1494 } | |
| 1495 } | |
| 1496 | |
| 1497 /* deleteFoldRecurse() {{{2 */ | |
| 1498 /* | |
| 1499 * Delete nested folds in a fold. | |
| 1500 */ | |
| 1501 void | |
| 1502 deleteFoldRecurse(gap) | |
| 1503 garray_T *gap; | |
| 1504 { | |
| 1505 int i; | |
| 1506 | |
| 1507 for (i = 0; i < gap->ga_len; ++i) | |
| 1508 deleteFoldRecurse(&(((fold_T *)(gap->ga_data))[i].fd_nested)); | |
| 1509 ga_clear(gap); | |
| 1510 } | |
| 1511 | |
| 1512 /* foldMarkAdjust() {{{2 */ | |
| 1513 /* | |
| 1514 * Update line numbers of folds for inserted/deleted lines. | |
| 1515 */ | |
| 1516 void | |
| 1517 foldMarkAdjust(wp, line1, line2, amount, amount_after) | |
| 1518 win_T *wp; | |
| 1519 linenr_T line1; | |
| 1520 linenr_T line2; | |
| 1521 long amount; | |
| 1522 long amount_after; | |
| 1523 { | |
| 1524 /* If deleting marks from line1 to line2, but not deleting all those | |
| 1525 * lines, set line2 so that only deleted lines have their folds removed. */ | |
| 1526 if (amount == MAXLNUM && line2 >= line1 && line2 - line1 >= -amount_after) | |
| 1527 line2 = line1 - amount_after - 1; | |
| 1528 /* If appending a line in Insert mode, it should be included in the fold | |
| 1529 * just above the line. */ | |
| 1530 if ((State & INSERT) && amount == (linenr_T)1 && line2 == MAXLNUM) | |
| 1531 --line1; | |
| 1532 foldMarkAdjustRecurse(&wp->w_folds, line1, line2, amount, amount_after); | |
| 1533 } | |
| 1534 | |
| 1535 /* foldMarkAdjustRecurse() {{{2 */ | |
| 1536 static void | |
| 1537 foldMarkAdjustRecurse(gap, line1, line2, amount, amount_after) | |
| 1538 garray_T *gap; | |
| 1539 linenr_T line1; | |
| 1540 linenr_T line2; | |
| 1541 long amount; | |
| 1542 long amount_after; | |
| 1543 { | |
| 1544 fold_T *fp; | |
| 1545 int i; | |
| 1546 linenr_T last; | |
| 1547 linenr_T top; | |
| 1548 | |
| 1549 /* In Insert mode an inserted line at the top of a fold is considered part | |
| 1550 * of the fold, otherwise it isn't. */ | |
| 1551 if ((State & INSERT) && amount == (linenr_T)1 && line2 == MAXLNUM) | |
| 1552 top = line1 + 1; | |
| 1553 else | |
| 1554 top = line1; | |
| 1555 | |
| 1556 /* Find the fold containing or just below "line1". */ | |
| 1557 (void)foldFind(gap, line1, &fp); | |
| 1558 | |
| 1559 /* | |
| 1560 * Adjust all folds below "line1" that are affected. | |
| 1561 */ | |
| 1562 for (i = (int)(fp - (fold_T *)gap->ga_data); i < gap->ga_len; ++i, ++fp) | |
| 1563 { | |
| 1564 /* | |
| 1565 * Check for these situations: | |
| 1566 * 1 2 3 | |
| 1567 * 1 2 3 | |
| 1568 * line1 2 3 4 5 | |
| 1569 * 2 3 4 5 | |
| 1570 * 2 3 4 5 | |
| 1571 * line2 2 3 4 5 | |
| 1572 * 3 5 6 | |
| 1573 * 3 5 6 | |
| 1574 */ | |
| 1575 | |
| 1576 last = fp->fd_top + fp->fd_len - 1; /* last line of fold */ | |
| 1577 | |
| 1578 /* 1. fold completely above line1: nothing to do */ | |
| 1579 if (last < line1) | |
| 1580 continue; | |
| 1581 | |
| 1582 /* 6. fold below line2: only adjust for amount_after */ | |
| 1583 if (fp->fd_top > line2) | |
| 1584 { | |
| 1585 if (amount_after == 0) | |
| 1586 break; | |
| 1587 fp->fd_top += amount_after; | |
| 1588 } | |
| 1589 else | |
| 1590 { | |
| 1591 if (fp->fd_top >= top && last <= line2) | |
| 1592 { | |
| 1593 /* 4. fold completely contained in range */ | |
| 1594 if (amount == MAXLNUM) | |
| 1595 { | |
| 1596 /* Deleting lines: delete the fold completely */ | |
| 1597 deleteFoldEntry(gap, i, TRUE); | |
| 1598 --i; /* adjust index for deletion */ | |
| 1599 --fp; | |
| 1600 } | |
| 1601 else | |
| 1602 fp->fd_top += amount; | |
| 1603 } | |
| 1604 else | |
| 1605 { | |
| 1606 if (fp->fd_top < top) | |
| 1607 { | |
| 1964 | 1608 /* 2 or 3: need to correct nested folds too */ |
| 1609 foldMarkAdjustRecurse(&fp->fd_nested, line1 - fp->fd_top, | |
| 1610 line2 - fp->fd_top, amount, amount_after); | |
| 7 | 1611 if (last <= line2) |
| 1612 { | |
| 1613 /* 2. fold contains line1, line2 is below fold */ | |
| 1614 if (amount == MAXLNUM) | |
| 1615 fp->fd_len = line1 - fp->fd_top; | |
| 1616 else | |
| 1617 fp->fd_len += amount; | |
| 1618 } | |
| 1619 else | |
| 1620 { | |
| 1621 /* 3. fold contains line1 and line2 */ | |
| 1622 fp->fd_len += amount_after; | |
| 1623 } | |
| 1624 } | |
| 1625 else | |
| 1626 { | |
| 1964 | 1627 /* 5. fold is below line1 and contains line2; need to |
| 1628 * correct nested folds too */ | |
| 1629 foldMarkAdjustRecurse(&fp->fd_nested, line1 - fp->fd_top, | |
| 1630 line2 - fp->fd_top, amount, | |
| 1631 amount_after + (fp->fd_top - top)); | |
| 7 | 1632 if (amount == MAXLNUM) |
| 1633 { | |
| 1634 fp->fd_len -= line2 - fp->fd_top + 1; | |
| 1635 fp->fd_top = line1; | |
| 1636 } | |
| 1637 else | |
| 1638 { | |
| 1639 fp->fd_len += amount_after - amount; | |
| 1640 fp->fd_top += amount; | |
| 1641 } | |
| 1642 } | |
| 1643 } | |
| 1644 } | |
| 1645 } | |
| 1646 } | |
| 1647 | |
| 1648 /* getDeepestNesting() {{{2 */ | |
| 1649 /* | |
| 1650 * Get the lowest 'foldlevel' value that makes the deepest nested fold in the | |
| 1651 * current window open. | |
| 1652 */ | |
| 1653 int | |
| 1654 getDeepestNesting() | |
| 1655 { | |
| 1656 checkupdate(curwin); | |
| 1657 return getDeepestNestingRecurse(&curwin->w_folds); | |
| 1658 } | |
| 1659 | |
| 1660 static int | |
| 1661 getDeepestNestingRecurse(gap) | |
| 1662 garray_T *gap; | |
| 1663 { | |
| 1664 int i; | |
| 1665 int level; | |
| 1666 int maxlevel = 0; | |
| 1667 fold_T *fp; | |
| 1668 | |
| 1669 fp = (fold_T *)gap->ga_data; | |
| 1670 for (i = 0; i < gap->ga_len; ++i) | |
| 1671 { | |
| 1672 level = getDeepestNestingRecurse(&fp[i].fd_nested) + 1; | |
| 1673 if (level > maxlevel) | |
| 1674 maxlevel = level; | |
| 1675 } | |
| 1676 | |
| 1677 return maxlevel; | |
| 1678 } | |
| 1679 | |
| 1680 /* check_closed() {{{2 */ | |
| 1681 /* | |
| 1682 * Check if a fold is closed and update the info needed to check nested folds. | |
| 1683 */ | |
| 1684 static int | |
| 1685 check_closed(win, fp, use_levelp, level, maybe_smallp, lnum_off) | |
| 1686 win_T *win; | |
| 1687 fold_T *fp; | |
| 1688 int *use_levelp; /* TRUE: outer fold had FD_LEVEL */ | |
| 1689 int level; /* folding depth */ | |
| 1690 int *maybe_smallp; /* TRUE: outer this had fd_small == MAYBE */ | |
| 1691 linenr_T lnum_off; /* line number offset for fp->fd_top */ | |
| 1692 { | |
| 1693 int closed = FALSE; | |
| 1694 | |
| 1695 /* Check if this fold is closed. If the flag is FD_LEVEL this | |
| 1696 * fold and all folds it contains depend on 'foldlevel'. */ | |
| 1697 if (*use_levelp || fp->fd_flags == FD_LEVEL) | |
| 1698 { | |
| 1699 *use_levelp = TRUE; | |
| 1700 if (level >= win->w_p_fdl) | |
| 1701 closed = TRUE; | |
| 1702 } | |
| 1703 else if (fp->fd_flags == FD_CLOSED) | |
| 1704 closed = TRUE; | |
| 1705 | |
| 1706 /* Small fold isn't closed anyway. */ | |
| 1707 if (fp->fd_small == MAYBE) | |
| 1708 *maybe_smallp = TRUE; | |
| 1709 if (closed) | |
| 1710 { | |
| 1711 if (*maybe_smallp) | |
| 1712 fp->fd_small = MAYBE; | |
| 1713 checkSmall(win, fp, lnum_off); | |
| 1714 if (fp->fd_small == TRUE) | |
| 1715 closed = FALSE; | |
| 1716 } | |
| 1717 return closed; | |
| 1718 } | |
| 1719 | |
| 1720 /* checkSmall() {{{2 */ | |
| 1721 /* | |
| 1722 * Update fd_small field of fold "fp". | |
| 1723 */ | |
| 1724 static void | |
| 1725 checkSmall(wp, fp, lnum_off) | |
| 1726 win_T *wp; | |
| 1727 fold_T *fp; | |
| 1728 linenr_T lnum_off; /* offset for fp->fd_top */ | |
| 1729 { | |
| 1730 int count; | |
| 1731 int n; | |
| 1732 | |
| 1733 if (fp->fd_small == MAYBE) | |
| 1734 { | |
| 1735 /* Mark any nested folds to maybe-small */ | |
| 1736 setSmallMaybe(&fp->fd_nested); | |
| 1737 | |
| 1738 if (fp->fd_len > curwin->w_p_fml) | |
| 1739 fp->fd_small = FALSE; | |
| 1740 else | |
| 1741 { | |
| 1742 count = 0; | |
| 1743 for (n = 0; n < fp->fd_len; ++n) | |
| 1744 { | |
| 1745 count += plines_win_nofold(wp, fp->fd_top + lnum_off + n); | |
| 1746 if (count > curwin->w_p_fml) | |
| 1747 { | |
| 1748 fp->fd_small = FALSE; | |
| 1749 return; | |
| 1750 } | |
| 1751 } | |
| 1752 fp->fd_small = TRUE; | |
| 1753 } | |
| 1754 } | |
| 1755 } | |
| 1756 | |
| 1757 /* setSmallMaybe() {{{2 */ | |
| 1758 /* | |
| 1759 * Set small flags in "gap" to MAYBE. | |
| 1760 */ | |
| 1761 static void | |
| 1762 setSmallMaybe(gap) | |
| 1763 garray_T *gap; | |
| 1764 { | |
| 1765 int i; | |
| 1766 fold_T *fp; | |
| 1767 | |
| 1768 fp = (fold_T *)gap->ga_data; | |
| 1769 for (i = 0; i < gap->ga_len; ++i) | |
| 1770 fp[i].fd_small = MAYBE; | |
| 1771 } | |
| 1772 | |
| 1773 /* foldCreateMarkers() {{{2 */ | |
| 1774 /* | |
| 1775 * Create a fold from line "start" to line "end" (inclusive) in the current | |
| 1776 * window by adding markers. | |
| 1777 */ | |
| 1778 static void | |
| 1779 foldCreateMarkers(start, end) | |
| 1780 linenr_T start; | |
| 1781 linenr_T end; | |
| 1782 { | |
| 1783 if (!curbuf->b_p_ma) | |
| 1784 { | |
| 1785 EMSG(_(e_modifiable)); | |
| 1786 return; | |
| 1787 } | |
| 1788 parseMarker(curwin); | |
| 1789 | |
| 1790 foldAddMarker(start, curwin->w_p_fmr, foldstartmarkerlen); | |
| 1791 foldAddMarker(end, foldendmarker, foldendmarkerlen); | |
| 1792 | |
| 1793 /* Update both changes here, to avoid all folds after the start are | |
| 1794 * changed when the start marker is inserted and the end isn't. */ | |
| 1795 changed_lines(start, (colnr_T)0, end, 0L); | |
| 1796 } | |
| 1797 | |
| 1798 /* foldAddMarker() {{{2 */ | |
| 1799 /* | |
| 1800 * Add "marker[markerlen]" in 'commentstring' to line "lnum". | |
| 1801 */ | |
| 1802 static void | |
| 1803 foldAddMarker(lnum, marker, markerlen) | |
| 1804 linenr_T lnum; | |
| 1805 char_u *marker; | |
| 1806 int markerlen; | |
| 1807 { | |
| 1808 char_u *cms = curbuf->b_p_cms; | |
| 1809 char_u *line; | |
| 1810 int line_len; | |
| 1811 char_u *newline; | |
| 1812 char_u *p = (char_u *)strstr((char *)curbuf->b_p_cms, "%s"); | |
| 1813 | |
| 1814 /* Allocate a new line: old-line + 'cms'-start + marker + 'cms'-end */ | |
| 1815 line = ml_get(lnum); | |
| 1816 line_len = (int)STRLEN(line); | |
| 1817 | |
| 1818 if (u_save(lnum - 1, lnum + 1) == OK) | |
| 1819 { | |
| 1820 newline = alloc((unsigned)(line_len + markerlen + STRLEN(cms) + 1)); | |
| 1821 if (newline == NULL) | |
| 1822 return; | |
| 1823 STRCPY(newline, line); | |
| 1824 if (p == NULL) | |
| 419 | 1825 vim_strncpy(newline + line_len, marker, markerlen); |
| 7 | 1826 else |
| 1827 { | |
| 1828 STRCPY(newline + line_len, cms); | |
| 1829 STRNCPY(newline + line_len + (p - cms), marker, markerlen); | |
| 1830 STRCPY(newline + line_len + (p - cms) + markerlen, p + 2); | |
| 1831 } | |
| 1832 | |
| 1833 ml_replace(lnum, newline, FALSE); | |
| 1834 } | |
| 1835 } | |
| 1836 | |
| 1837 /* deleteFoldMarkers() {{{2 */ | |
| 1838 /* | |
| 1839 * Delete the markers for a fold, causing it to be deleted. | |
| 1840 */ | |
| 1841 static void | |
| 1842 deleteFoldMarkers(fp, recursive, lnum_off) | |
| 1843 fold_T *fp; | |
| 1844 int recursive; | |
| 1845 linenr_T lnum_off; /* offset for fp->fd_top */ | |
| 1846 { | |
| 1847 int i; | |
| 1848 | |
| 1849 if (recursive) | |
| 1850 for (i = 0; i < fp->fd_nested.ga_len; ++i) | |
| 1851 deleteFoldMarkers((fold_T *)fp->fd_nested.ga_data + i, TRUE, | |
| 1852 lnum_off + fp->fd_top); | |
| 1853 foldDelMarker(fp->fd_top + lnum_off, curwin->w_p_fmr, foldstartmarkerlen); | |
| 1854 foldDelMarker(fp->fd_top + lnum_off + fp->fd_len - 1, | |
| 1855 foldendmarker, foldendmarkerlen); | |
| 1856 } | |
| 1857 | |
| 1858 /* foldDelMarker() {{{2 */ | |
| 1859 /* | |
| 1860 * Delete marker "marker[markerlen]" at the end of line "lnum". | |
| 1861 * Delete 'commentstring' if it matches. | |
| 1862 * If the marker is not found, there is no error message. Could a missing | |
| 1863 * close-marker. | |
| 1864 */ | |
| 1865 static void | |
| 1866 foldDelMarker(lnum, marker, markerlen) | |
| 1867 linenr_T lnum; | |
| 1868 char_u *marker; | |
| 1869 int markerlen; | |
| 1870 { | |
| 1871 char_u *line; | |
| 1872 char_u *newline; | |
| 1873 char_u *p; | |
| 1874 int len; | |
| 1875 char_u *cms = curbuf->b_p_cms; | |
| 1876 char_u *cms2; | |
| 1877 | |
| 1878 line = ml_get(lnum); | |
| 1879 for (p = line; *p != NUL; ++p) | |
| 1880 if (STRNCMP(p, marker, markerlen) == 0) | |
| 1881 { | |
| 1882 /* Found the marker, include a digit if it's there. */ | |
| 1883 len = markerlen; | |
| 1884 if (VIM_ISDIGIT(p[len])) | |
| 1885 ++len; | |
| 1886 if (*cms != NUL) | |
| 1887 { | |
| 1888 /* Also delete 'commentstring' if it matches. */ | |
| 1889 cms2 = (char_u *)strstr((char *)cms, "%s"); | |
| 1890 if (p - line >= cms2 - cms | |
| 1891 && STRNCMP(p - (cms2 - cms), cms, cms2 - cms) == 0 | |
| 1892 && STRNCMP(p + len, cms2 + 2, STRLEN(cms2 + 2)) == 0) | |
| 1893 { | |
| 1894 p -= cms2 - cms; | |
| 1895 len += (int)STRLEN(cms) - 2; | |
| 1896 } | |
| 1897 } | |
| 1898 if (u_save(lnum - 1, lnum + 1) == OK) | |
| 1899 { | |
| 1900 /* Make new line: text-before-marker + text-after-marker */ | |
| 1901 newline = alloc((unsigned)(STRLEN(line) - len + 1)); | |
| 1902 if (newline != NULL) | |
| 1903 { | |
| 1904 STRNCPY(newline, line, p - line); | |
| 1905 STRCPY(newline + (p - line), p + len); | |
| 1906 ml_replace(lnum, newline, FALSE); | |
| 1907 } | |
| 1908 } | |
| 1909 break; | |
| 1910 } | |
| 1911 } | |
| 1912 | |
| 29 | 1913 /* get_foldtext() {{{2 */ |
| 1914 /* | |
| 1915 * Return the text for a closed fold at line "lnum", with last line "lnume". | |
| 1916 * When 'foldtext' isn't set puts the result in "buf[51]". Otherwise the | |
| 1917 * result is in allocated memory. | |
| 1918 */ | |
| 1919 char_u * | |
| 1920 get_foldtext(wp, lnum, lnume, foldinfo, buf) | |
| 1921 win_T *wp; | |
| 1922 linenr_T lnum, lnume; | |
| 1923 foldinfo_T *foldinfo; | |
| 1924 char_u *buf; | |
| 1925 { | |
| 1926 char_u *text = NULL; | |
|
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1927 #ifdef FEAT_EVAL |
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1928 /* an error occurred when evaluating 'fdt' setting */ |
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1929 static int got_fdt_error = FALSE; |
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1930 int save_did_emsg = did_emsg; |
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1931 static win_T *last_wp = NULL; |
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1932 static linenr_T last_lnum = 0; |
| 29 | 1933 |
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1934 if (last_wp != wp || last_wp == NULL |
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1935 || last_lnum > lnum || last_lnum == 0) |
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1936 /* window changed, try evaluating foldtext setting once again */ |
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1937 got_fdt_error = FALSE; |
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1938 |
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1939 if (!got_fdt_error) |
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1940 /* a previous error should not abort evaluating 'foldexpr' */ |
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1941 did_emsg = FALSE; |
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1942 |
| 29 | 1943 if (*wp->w_p_fdt != NUL) |
| 1944 { | |
| 1981 | 1945 char_u dashes[MAX_LEVEL + 2]; |
| 29 | 1946 win_T *save_curwin; |
| 1947 int level; | |
| 1948 char_u *p; | |
| 1949 | |
| 1950 /* Set "v:foldstart" and "v:foldend". */ | |
| 1951 set_vim_var_nr(VV_FOLDSTART, lnum); | |
| 1952 set_vim_var_nr(VV_FOLDEND, lnume); | |
| 1953 | |
| 1954 /* Set "v:folddashes" to a string of "level" dashes. */ | |
| 1955 /* Set "v:foldlevel" to "level". */ | |
| 1956 level = foldinfo->fi_level; | |
| 1981 | 1957 if (level > (int)sizeof(dashes) - 1) |
| 1958 level = (int)sizeof(dashes) - 1; | |
| 29 | 1959 vim_memset(dashes, '-', (size_t)level); |
| 1960 dashes[level] = NUL; | |
| 1961 set_vim_var_string(VV_FOLDDASHES, dashes, -1); | |
| 1962 set_vim_var_nr(VV_FOLDLEVEL, (long)level); | |
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1963 |
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1964 /* skip evaluating foldtext on errors */ |
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1965 if (!got_fdt_error) |
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1966 { |
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1967 save_curwin = curwin; |
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1968 curwin = wp; |
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1969 curbuf = wp->w_buffer; |
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1970 |
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1971 ++emsg_silent; /* handle exceptions, but don't display errors */ |
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1972 text = eval_to_string_safe(wp->w_p_fdt, NULL, |
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1973 was_set_insecurely((char_u *)"foldtext", OPT_LOCAL)); |
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1974 --emsg_silent; |
| 29 | 1975 |
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1976 if (text == NULL || did_emsg) |
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1977 got_fdt_error = TRUE; |
| 29 | 1978 |
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1979 curwin = save_curwin; |
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1980 curbuf = curwin->w_buffer; |
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1981 } |
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1982 last_lnum = lnum; |
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1983 last_wp = wp; |
| 29 | 1984 set_vim_var_string(VV_FOLDDASHES, NULL, -1); |
| 1985 | |
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1986 if (!did_emsg && save_did_emsg) |
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1987 did_emsg = save_did_emsg; |
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1988 |
| 29 | 1989 if (text != NULL) |
| 1990 { | |
| 1991 /* Replace unprintable characters, if there are any. But | |
| 1992 * replace a TAB with a space. */ | |
| 1993 for (p = text; *p != NUL; ++p) | |
| 1994 { | |
| 1995 # ifdef FEAT_MBYTE | |
| 33 | 1996 int len; |
| 1997 | |
| 474 | 1998 if (has_mbyte && (len = (*mb_ptr2len)(p)) > 1) |
| 29 | 1999 { |
| 2000 if (!vim_isprintc((*mb_ptr2char)(p))) | |
| 2001 break; | |
| 2002 p += len - 1; | |
| 2003 } | |
| 2004 else | |
| 2005 # endif | |
| 2006 if (*p == TAB) | |
| 2007 *p = ' '; | |
| 2008 else if (ptr2cells(p) > 1) | |
| 2009 break; | |
| 2010 } | |
| 2011 if (*p != NUL) | |
| 2012 { | |
| 2013 p = transstr(text); | |
| 2014 vim_free(text); | |
| 2015 text = p; | |
| 2016 } | |
| 2017 } | |
| 2018 } | |
| 2019 if (text == NULL) | |
| 2020 #endif | |
| 2021 { | |
| 2022 sprintf((char *)buf, _("+--%3ld lines folded "), | |
| 2023 (long)(lnume - lnum + 1)); | |
| 2024 text = buf; | |
| 2025 } | |
| 2026 return text; | |
| 2027 } | |
| 2028 | |
| 7 | 2029 /* foldtext_cleanup() {{{2 */ |
| 2030 /* | |
| 2031 * Remove 'foldmarker' and 'commentstring' from "str" (in-place). | |
| 2032 */ | |
| 2033 void | |
| 2034 foldtext_cleanup(str) | |
| 2035 char_u *str; | |
| 2036 { | |
| 2037 char_u *cms_start; /* first part or the whole comment */ | |
| 2038 int cms_slen = 0; /* length of cms_start */ | |
| 2039 char_u *cms_end; /* last part of the comment or NULL */ | |
| 2040 int cms_elen = 0; /* length of cms_end */ | |
| 2041 char_u *s; | |
| 45 | 2042 char_u *p; |
| 7 | 2043 int len; |
| 2044 int did1 = FALSE; | |
| 2045 int did2 = FALSE; | |
| 2046 | |
| 2047 /* Ignore leading and trailing white space in 'commentstring'. */ | |
| 2048 cms_start = skipwhite(curbuf->b_p_cms); | |
| 835 | 2049 cms_slen = (int)STRLEN(cms_start); |
| 7 | 2050 while (cms_slen > 0 && vim_iswhite(cms_start[cms_slen - 1])) |
| 2051 --cms_slen; | |
| 2052 | |
| 2053 /* locate "%s" in 'commentstring', use the part before and after it. */ | |
| 2054 cms_end = (char_u *)strstr((char *)cms_start, "%s"); | |
| 2055 if (cms_end != NULL) | |
| 2056 { | |
| 835 | 2057 cms_elen = cms_slen - (int)(cms_end - cms_start); |
| 2058 cms_slen = (int)(cms_end - cms_start); | |
| 7 | 2059 |
| 2060 /* exclude white space before "%s" */ | |
| 2061 while (cms_slen > 0 && vim_iswhite(cms_start[cms_slen - 1])) | |
| 2062 --cms_slen; | |
| 2063 | |
| 2064 /* skip "%s" and white space after it */ | |
| 2065 s = skipwhite(cms_end + 2); | |
| 835 | 2066 cms_elen -= (int)(s - cms_end); |
| 7 | 2067 cms_end = s; |
| 2068 } | |
| 2069 parseMarker(curwin); | |
| 2070 | |
| 2071 for (s = str; *s != NUL; ) | |
| 2072 { | |
| 2073 len = 0; | |
| 2074 if (STRNCMP(s, curwin->w_p_fmr, foldstartmarkerlen) == 0) | |
| 45 | 2075 len = foldstartmarkerlen; |
| 2076 else if (STRNCMP(s, foldendmarker, foldendmarkerlen) == 0) | |
| 2077 len = foldendmarkerlen; | |
| 2078 if (len > 0) | |
| 7 | 2079 { |
| 2080 if (VIM_ISDIGIT(s[len])) | |
| 2081 ++len; | |
| 45 | 2082 |
| 2083 /* May remove 'commentstring' start. Useful when it's a double | |
| 2084 * quote and we already removed a double quote. */ | |
| 2085 for (p = s; p > str && vim_iswhite(p[-1]); --p) | |
| 2086 ; | |
| 2087 if (p >= str + cms_slen | |
| 2088 && STRNCMP(p - cms_slen, cms_start, cms_slen) == 0) | |
| 2089 { | |
| 835 | 2090 len += (int)(s - p) + cms_slen; |
| 45 | 2091 s = p - cms_slen; |
| 2092 } | |
| 7 | 2093 } |
| 2094 else if (cms_end != NULL) | |
| 2095 { | |
| 45 | 2096 if (!did1 && cms_slen > 0 && STRNCMP(s, cms_start, cms_slen) == 0) |
| 7 | 2097 { |
| 2098 len = cms_slen; | |
| 2099 did1 = TRUE; | |
| 2100 } | |
| 45 | 2101 else if (!did2 && cms_elen > 0 |
| 2102 && STRNCMP(s, cms_end, cms_elen) == 0) | |
| 7 | 2103 { |
| 2104 len = cms_elen; | |
| 2105 did2 = TRUE; | |
| 2106 } | |
| 2107 } | |
| 2108 if (len != 0) | |
| 2109 { | |
| 2110 while (vim_iswhite(s[len])) | |
| 2111 ++len; | |
| 1624 | 2112 STRMOVE(s, s + len); |
| 7 | 2113 } |
| 2114 else | |
| 2115 { | |
| 39 | 2116 mb_ptr_adv(s); |
| 7 | 2117 } |
| 2118 } | |
| 2119 } | |
| 2120 | |
| 2121 /* Folding by indent, expr, marker and syntax. {{{1 */ | |
| 2122 /* Define "fline_T", passed to get fold level for a line. {{{2 */ | |
| 2123 typedef struct | |
| 2124 { | |
| 2125 win_T *wp; /* window */ | |
| 2126 linenr_T lnum; /* current line number */ | |
| 2127 linenr_T off; /* offset between lnum and real line number */ | |
| 2128 linenr_T lnum_save; /* line nr used by foldUpdateIEMSRecurse() */ | |
| 2129 int lvl; /* current level (-1 for undefined) */ | |
| 2130 int lvl_next; /* level used for next line */ | |
| 2131 int start; /* number of folds that are forced to start at | |
| 2132 this line. */ | |
| 2133 int end; /* level of fold that is forced to end below | |
| 2134 this line */ | |
| 2135 int had_end; /* level of fold that is forced to end above | |
| 2136 this line (copy of "end" of prev. line) */ | |
| 2137 } fline_T; | |
| 2138 | |
| 2139 /* Flag is set when redrawing is needed. */ | |
| 2140 static int fold_changed; | |
| 2141 | |
| 2142 /* Function declarations. {{{2 */ | |
| 2143 static linenr_T foldUpdateIEMSRecurse __ARGS((garray_T *gap, int level, linenr_T startlnum, fline_T *flp, void (*getlevel)__ARGS((fline_T *)), linenr_T bot, int topflags)); | |
| 2144 static int foldInsert __ARGS((garray_T *gap, int i)); | |
| 2145 static void foldSplit __ARGS((garray_T *gap, int i, linenr_T top, linenr_T bot)); | |
| 2146 static void foldRemove __ARGS((garray_T *gap, linenr_T top, linenr_T bot)); | |
| 2147 static void foldMerge __ARGS((fold_T *fp1, garray_T *gap, fold_T *fp2)); | |
| 2148 static void foldlevelIndent __ARGS((fline_T *flp)); | |
| 2149 #ifdef FEAT_DIFF | |
| 2150 static void foldlevelDiff __ARGS((fline_T *flp)); | |
| 2151 #endif | |
| 2152 static void foldlevelExpr __ARGS((fline_T *flp)); | |
| 2153 static void foldlevelMarker __ARGS((fline_T *flp)); | |
| 2154 static void foldlevelSyntax __ARGS((fline_T *flp)); | |
| 2155 | |
| 2156 /* foldUpdateIEMS() {{{2 */ | |
| 2157 /* | |
| 2158 * Update the folding for window "wp", at least from lines "top" to "bot". | |
| 2159 * Return TRUE if any folds did change. | |
| 2160 */ | |
| 2161 static void | |
| 2162 foldUpdateIEMS(wp, top, bot) | |
| 2163 win_T *wp; | |
| 2164 linenr_T top; | |
| 2165 linenr_T bot; | |
| 2166 { | |
| 2167 linenr_T start; | |
| 2168 linenr_T end; | |
| 2169 fline_T fline; | |
| 2170 void (*getlevel)__ARGS((fline_T *)); | |
| 2171 int level; | |
| 2172 fold_T *fp; | |
| 2173 | |
| 2174 /* Avoid problems when being called recursively. */ | |
| 2175 if (invalid_top != (linenr_T)0) | |
| 2176 return; | |
| 2177 | |
| 2178 if (wp->w_foldinvalid) | |
| 2179 { | |
| 2180 /* Need to update all folds. */ | |
| 2181 top = 1; | |
| 2182 bot = wp->w_buffer->b_ml.ml_line_count; | |
| 2183 wp->w_foldinvalid = FALSE; | |
| 2184 | |
| 2185 /* Mark all folds a maybe-small. */ | |
| 2186 setSmallMaybe(&wp->w_folds); | |
| 2187 } | |
| 2188 | |
| 2189 #ifdef FEAT_DIFF | |
| 2190 /* add the context for "diff" folding */ | |
| 2191 if (foldmethodIsDiff(wp)) | |
| 2192 { | |
| 2193 if (top > diff_context) | |
| 2194 top -= diff_context; | |
| 2195 else | |
| 2196 top = 1; | |
| 2197 bot += diff_context; | |
| 2198 } | |
| 2199 #endif | |
| 2200 | |
| 2201 /* When deleting lines at the end of the buffer "top" can be past the end | |
| 2202 * of the buffer. */ | |
| 2203 if (top > wp->w_buffer->b_ml.ml_line_count) | |
| 2204 top = wp->w_buffer->b_ml.ml_line_count; | |
| 2205 | |
| 2206 fold_changed = FALSE; | |
| 2207 fline.wp = wp; | |
| 2208 fline.off = 0; | |
| 2209 fline.lvl = 0; | |
| 2210 fline.lvl_next = -1; | |
| 2211 fline.start = 0; | |
| 2212 fline.end = MAX_LEVEL + 1; | |
| 2213 fline.had_end = MAX_LEVEL + 1; | |
| 2214 | |
| 2215 invalid_top = top; | |
| 2216 invalid_bot = bot; | |
| 2217 | |
| 2218 if (foldmethodIsMarker(wp)) | |
| 2219 { | |
| 2220 getlevel = foldlevelMarker; | |
| 2221 | |
| 2222 /* Init marker variables to speed up foldlevelMarker(). */ | |
| 2223 parseMarker(wp); | |
| 2224 | |
| 2225 /* Need to get the level of the line above top, it is used if there is | |
| 2226 * no marker at the top. */ | |
| 2227 if (top > 1) | |
| 2228 { | |
| 2229 /* Get the fold level at top - 1. */ | |
| 2230 level = foldLevelWin(wp, top - 1); | |
| 2231 | |
| 2232 /* The fold may end just above the top, check for that. */ | |
| 2233 fline.lnum = top - 1; | |
| 2234 fline.lvl = level; | |
| 2235 getlevel(&fline); | |
| 2236 | |
| 2237 /* If a fold started here, we already had the level, if it stops | |
| 2238 * here, we need to use lvl_next. Could also start and end a fold | |
| 2239 * in the same line. */ | |
| 2240 if (fline.lvl > level) | |
| 2241 fline.lvl = level - (fline.lvl - fline.lvl_next); | |
| 2242 else | |
| 2243 fline.lvl = fline.lvl_next; | |
| 2244 } | |
| 2245 fline.lnum = top; | |
| 2246 getlevel(&fline); | |
| 2247 } | |
| 2248 else | |
| 2249 { | |
| 2250 fline.lnum = top; | |
| 2251 if (foldmethodIsExpr(wp)) | |
| 2252 { | |
| 2253 getlevel = foldlevelExpr; | |
| 2254 /* start one line back, because a "<1" may indicate the end of a | |
| 2255 * fold in the topline */ | |
| 2256 if (top > 1) | |
| 2257 --fline.lnum; | |
| 2258 } | |
| 2259 else if (foldmethodIsSyntax(wp)) | |
| 2260 getlevel = foldlevelSyntax; | |
| 2261 #ifdef FEAT_DIFF | |
| 2262 else if (foldmethodIsDiff(wp)) | |
| 2263 getlevel = foldlevelDiff; | |
| 2264 #endif | |
| 2265 else | |
| 2266 getlevel = foldlevelIndent; | |
| 2267 | |
| 2268 /* Backup to a line for which the fold level is defined. Since it's | |
| 2269 * always defined for line one, we will stop there. */ | |
| 2270 fline.lvl = -1; | |
| 2271 for ( ; !got_int; --fline.lnum) | |
| 2272 { | |
| 2273 /* Reset lvl_next each time, because it will be set to a value for | |
| 2274 * the next line, but we search backwards here. */ | |
| 2275 fline.lvl_next = -1; | |
| 2276 getlevel(&fline); | |
| 2277 if (fline.lvl >= 0) | |
| 2278 break; | |
| 2279 } | |
| 2280 } | |
| 2281 | |
| 1977 | 2282 /* |
| 2283 * If folding is defined by the syntax, it is possible that a change in | |
| 2284 * one line will cause all sub-folds of the current fold to change (e.g., | |
| 2285 * closing a C-style comment can cause folds in the subsequent lines to | |
| 2286 * appear). To take that into account we should adjust the value of "bot" | |
| 2287 * to point to the end of the current fold: | |
| 2288 */ | |
| 2289 if (foldlevelSyntax == getlevel) | |
| 2290 { | |
| 2291 garray_T *gap = &wp->w_folds; | |
|
2271
2b33a7678e7b
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Bram Moolenaar <bram@vim.org>
parents:
2114
diff
changeset
|
2292 fold_T *fpn = NULL; |
| 1977 | 2293 int current_fdl = 0; |
| 2294 linenr_T fold_start_lnum = 0; | |
| 2295 linenr_T lnum_rel = fline.lnum; | |
| 2296 | |
| 2297 while (current_fdl < fline.lvl) | |
| 2298 { | |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2114
diff
changeset
|
2299 if (!foldFind(gap, lnum_rel, &fpn)) |
| 1977 | 2300 break; |
| 2301 ++current_fdl; | |
| 2302 | |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2114
diff
changeset
|
2303 fold_start_lnum += fpn->fd_top; |
|
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2114
diff
changeset
|
2304 gap = &fpn->fd_nested; |
|
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2114
diff
changeset
|
2305 lnum_rel -= fpn->fd_top; |
| 1977 | 2306 } |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2114
diff
changeset
|
2307 if (fpn != NULL && current_fdl == fline.lvl) |
| 1977 | 2308 { |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2114
diff
changeset
|
2309 linenr_T fold_end_lnum = fold_start_lnum + fpn->fd_len; |
| 1977 | 2310 |
| 2311 if (fold_end_lnum > bot) | |
| 2312 bot = fold_end_lnum; | |
| 2313 } | |
| 2314 } | |
| 2315 | |
| 7 | 2316 start = fline.lnum; |
| 2317 end = bot; | |
| 2318 /* Do at least one line. */ | |
| 2319 if (start > end && end < wp->w_buffer->b_ml.ml_line_count) | |
| 2320 end = start; | |
| 2321 while (!got_int) | |
| 2322 { | |
| 2323 /* Always stop at the end of the file ("end" can be past the end of | |
| 2324 * the file). */ | |
| 2325 if (fline.lnum > wp->w_buffer->b_ml.ml_line_count) | |
| 2326 break; | |
| 2327 if (fline.lnum > end) | |
| 2328 { | |
| 2329 /* For "marker", "expr" and "syntax" methods: If a change caused | |
| 2330 * a fold to be removed, we need to continue at least until where | |
| 2331 * it ended. */ | |
| 2332 if (getlevel != foldlevelMarker | |
| 2333 && getlevel != foldlevelSyntax | |
| 2334 && getlevel != foldlevelExpr) | |
| 2335 break; | |
| 2336 if ((start <= end | |
| 2337 && foldFind(&wp->w_folds, end, &fp) | |
| 2338 && fp->fd_top + fp->fd_len - 1 > end) | |
| 2339 || (fline.lvl == 0 | |
| 2340 && foldFind(&wp->w_folds, fline.lnum, &fp) | |
| 2341 && fp->fd_top < fline.lnum)) | |
| 2342 end = fp->fd_top + fp->fd_len - 1; | |
| 2343 else if (getlevel == foldlevelSyntax | |
| 2344 && foldLevelWin(wp, fline.lnum) != fline.lvl) | |
| 2345 /* For "syntax" method: Compare the foldlevel that the syntax | |
| 2346 * tells us to the foldlevel from the existing folds. If they | |
| 2347 * don't match continue updating folds. */ | |
| 2348 end = fline.lnum; | |
| 2349 else | |
| 2350 break; | |
| 2351 } | |
| 2352 | |
| 2353 /* A level 1 fold starts at a line with foldlevel > 0. */ | |
| 2354 if (fline.lvl > 0) | |
| 2355 { | |
| 2356 invalid_top = fline.lnum; | |
| 2357 invalid_bot = end; | |
| 2358 end = foldUpdateIEMSRecurse(&wp->w_folds, | |
| 2359 1, start, &fline, getlevel, end, FD_LEVEL); | |
| 2360 start = fline.lnum; | |
| 2361 } | |
| 2362 else | |
| 2363 { | |
| 2364 if (fline.lnum == wp->w_buffer->b_ml.ml_line_count) | |
| 2365 break; | |
| 2366 ++fline.lnum; | |
| 2367 fline.lvl = fline.lvl_next; | |
| 2368 getlevel(&fline); | |
| 2369 } | |
| 2370 } | |
| 2371 | |
| 2372 /* There can't be any folds from start until end now. */ | |
| 2373 foldRemove(&wp->w_folds, start, end); | |
| 2374 | |
| 2375 /* If some fold changed, need to redraw and position cursor. */ | |
| 2376 if (fold_changed && wp->w_p_fen) | |
| 1554 | 2377 changed_window_setting_win(wp); |
| 7 | 2378 |
| 2379 /* If we updated folds past "bot", need to redraw more lines. Don't do | |
| 2380 * this in other situations, the changed lines will be redrawn anyway and | |
| 2381 * this method can cause the whole window to be updated. */ | |
| 2382 if (end != bot) | |
| 2383 { | |
| 2384 if (wp->w_redraw_top == 0 || wp->w_redraw_top > top) | |
| 2385 wp->w_redraw_top = top; | |
| 2386 if (wp->w_redraw_bot < end) | |
| 2387 wp->w_redraw_bot = end; | |
| 2388 } | |
| 2389 | |
| 2390 invalid_top = (linenr_T)0; | |
| 2391 } | |
| 2392 | |
| 2393 /* foldUpdateIEMSRecurse() {{{2 */ | |
| 2394 /* | |
| 2395 * Update a fold that starts at "flp->lnum". At this line there is always a | |
| 2396 * valid foldlevel, and its level >= "level". | |
| 2397 * "flp" is valid for "flp->lnum" when called and it's valid when returning. | |
| 2398 * "flp->lnum" is set to the lnum just below the fold, if it ends before | |
| 2399 * "bot", it's "bot" plus one if the fold continues and it's bigger when using | |
| 2400 * the marker method and a text change made following folds to change. | |
| 2401 * When returning, "flp->lnum_save" is the line number that was used to get | |
| 2402 * the level when the level at "flp->lnum" is invalid. | |
| 2403 * Remove any folds from "startlnum" up to here at this level. | |
| 2404 * Recursively update nested folds. | |
| 2405 * Below line "bot" there are no changes in the text. | |
| 2406 * "flp->lnum", "flp->lnum_save" and "bot" are relative to the start of the | |
| 2407 * outer fold. | |
| 2408 * "flp->off" is the offset to the real line number in the buffer. | |
| 2409 * | |
| 2410 * All this would be a lot simpler if all folds in the range would be deleted | |
| 1698 | 2411 * and then created again. But we would lose all information about the |
| 7 | 2412 * folds, even when making changes that don't affect the folding (e.g. "vj~"). |
| 2413 * | |
| 2414 * Returns bot, which may have been increased for lines that also need to be | |
| 2415 * updated as a result of a detected change in the fold. | |
| 2416 */ | |
| 2417 static linenr_T | |
| 2418 foldUpdateIEMSRecurse(gap, level, startlnum, flp, getlevel, bot, topflags) | |
| 2419 garray_T *gap; | |
| 2420 int level; | |
| 2421 linenr_T startlnum; | |
| 2422 fline_T *flp; | |
| 2423 void (*getlevel)__ARGS((fline_T *)); | |
| 2424 linenr_T bot; | |
| 2425 int topflags; /* flags used by containing fold */ | |
| 2426 { | |
| 2427 linenr_T ll; | |
| 2428 fold_T *fp = NULL; | |
| 2429 fold_T *fp2; | |
| 2430 int lvl = level; | |
| 2431 linenr_T startlnum2 = startlnum; | |
| 2432 linenr_T firstlnum = flp->lnum; /* first lnum we got */ | |
| 2433 int i; | |
| 2434 int finish = FALSE; | |
| 2435 linenr_T linecount = flp->wp->w_buffer->b_ml.ml_line_count - flp->off; | |
| 2436 int concat; | |
| 2437 | |
| 2438 /* | |
| 2439 * If using the marker method, the start line is not the start of a fold | |
| 2440 * at the level we're dealing with and the level is non-zero, we must use | |
| 2441 * the previous fold. But ignore a fold that starts at or below | |
| 2442 * startlnum, it must be deleted. | |
| 2443 */ | |
| 2444 if (getlevel == foldlevelMarker && flp->start <= flp->lvl - level | |
| 2445 && flp->lvl > 0) | |
| 2446 { | |
| 2447 foldFind(gap, startlnum - 1, &fp); | |
| 2448 if (fp >= ((fold_T *)gap->ga_data) + gap->ga_len | |
| 2449 || fp->fd_top >= startlnum) | |
| 2450 fp = NULL; | |
| 2451 } | |
| 2452 | |
| 2453 /* | |
| 2454 * Loop over all lines in this fold, or until "bot" is hit. | |
| 2455 * Handle nested folds inside of this fold. | |
| 2456 * "flp->lnum" is the current line. When finding the end of the fold, it | |
| 2457 * is just below the end of the fold. | |
| 2458 * "*flp" contains the level of the line "flp->lnum" or a following one if | |
| 2459 * there are lines with an invalid fold level. "flp->lnum_save" is the | |
| 2460 * line number that was used to get the fold level (below "flp->lnum" when | |
| 2461 * it has an invalid fold level). When called the fold level is always | |
| 2462 * valid, thus "flp->lnum_save" is equal to "flp->lnum". | |
| 2463 */ | |
| 2464 flp->lnum_save = flp->lnum; | |
| 2465 while (!got_int) | |
| 2466 { | |
| 2467 /* Updating folds can be slow, check for CTRL-C. */ | |
| 2468 line_breakcheck(); | |
| 2469 | |
| 2470 /* Set "lvl" to the level of line "flp->lnum". When flp->start is set | |
| 2471 * and after the first line of the fold, set the level to zero to | |
| 2472 * force the fold to end. Do the same when had_end is set: Previous | |
| 2473 * line was marked as end of a fold. */ | |
| 2474 lvl = flp->lvl; | |
| 2475 if (lvl > MAX_LEVEL) | |
| 2476 lvl = MAX_LEVEL; | |
| 2477 if (flp->lnum > firstlnum | |
| 2478 && (level > lvl - flp->start || level >= flp->had_end)) | |
| 2479 lvl = 0; | |
| 2480 | |
| 2481 if (flp->lnum > bot && !finish && fp != NULL) | |
| 2482 { | |
| 2483 /* For "marker" and "syntax" methods: | |
| 2484 * - If a change caused a nested fold to be removed, we need to | |
| 2485 * delete it and continue at least until where it ended. | |
| 2486 * - If a change caused a nested fold to be created, or this fold | |
| 2487 * to continue below its original end, need to finish this fold. | |
| 2488 */ | |
| 2489 if (getlevel != foldlevelMarker | |
| 2490 && getlevel != foldlevelExpr | |
| 2491 && getlevel != foldlevelSyntax) | |
| 2492 break; | |
| 2493 i = 0; | |
| 2494 fp2 = fp; | |
| 2495 if (lvl >= level) | |
| 2496 { | |
| 2497 /* Compute how deep the folds currently are, if it's deeper | |
| 2498 * than "lvl" then some must be deleted, need to update | |
| 2499 * at least one nested fold. */ | |
| 2500 ll = flp->lnum - fp->fd_top; | |
| 2501 while (foldFind(&fp2->fd_nested, ll, &fp2)) | |
| 2502 { | |
| 2503 ++i; | |
| 2504 ll -= fp2->fd_top; | |
| 2505 } | |
| 2506 } | |
| 2507 if (lvl < level + i) | |
| 2508 { | |
| 2509 foldFind(&fp->fd_nested, flp->lnum - fp->fd_top, &fp2); | |
| 2510 if (fp2 != NULL) | |
| 2511 bot = fp2->fd_top + fp2->fd_len - 1 + fp->fd_top; | |
| 2512 } | |
| 2513 else if (fp->fd_top + fp->fd_len <= flp->lnum && lvl >= level) | |
| 2514 finish = TRUE; | |
| 2515 else | |
| 2516 break; | |
| 2517 } | |
| 2518 | |
| 2519 /* At the start of the first nested fold and at the end of the current | |
| 2520 * fold: check if existing folds at this level, before the current | |
| 2521 * one, need to be deleted or truncated. */ | |
| 2522 if (fp == NULL | |
| 2523 && (lvl != level | |
| 2524 || flp->lnum_save >= bot | |
| 2525 || flp->start != 0 | |
| 2526 || flp->had_end <= MAX_LEVEL | |
| 2527 || flp->lnum == linecount)) | |
| 2528 { | |
| 2529 /* | |
| 2530 * Remove or update folds that have lines between startlnum and | |
| 2531 * firstlnum. | |
| 2532 */ | |
| 2533 while (!got_int) | |
| 2534 { | |
| 2535 /* set concat to 1 if it's allowed to concatenated this fold | |
| 2536 * with a previous one that touches it. */ | |
| 2537 if (flp->start != 0 || flp->had_end <= MAX_LEVEL) | |
| 2538 concat = 0; | |
| 2539 else | |
| 2540 concat = 1; | |
| 2541 | |
| 2542 /* Find an existing fold to re-use. Preferably one that | |
| 2543 * includes startlnum, otherwise one that ends just before | |
| 2544 * startlnum or starts after it. */ | |
| 2545 if (foldFind(gap, startlnum, &fp) | |
| 2546 || (fp < ((fold_T *)gap->ga_data) + gap->ga_len | |
| 2547 && fp->fd_top <= firstlnum) | |
| 2548 || foldFind(gap, firstlnum - concat, &fp) | |
| 2549 || (fp < ((fold_T *)gap->ga_data) + gap->ga_len | |
| 2550 && ((lvl < level && fp->fd_top < flp->lnum) | |
| 2551 || (lvl >= level | |
| 2552 && fp->fd_top <= flp->lnum_save)))) | |
| 2553 { | |
| 2554 if (fp->fd_top + fp->fd_len + concat > firstlnum) | |
| 2555 { | |
| 2556 /* Use existing fold for the new fold. If it starts | |
| 2557 * before where we started looking, extend it. If it | |
| 2558 * starts at another line, update nested folds to keep | |
| 2559 * their position, compensating for the new fd_top. */ | |
| 2560 if (fp->fd_top >= startlnum && fp->fd_top != firstlnum) | |
| 2561 { | |
| 2562 if (fp->fd_top > firstlnum) | |
| 2563 /* like lines are inserted */ | |
| 2564 foldMarkAdjustRecurse(&fp->fd_nested, | |
| 2565 (linenr_T)0, (linenr_T)MAXLNUM, | |
| 2566 (long)(fp->fd_top - firstlnum), 0L); | |
| 2567 else | |
| 2568 /* like lines are deleted */ | |
| 2569 foldMarkAdjustRecurse(&fp->fd_nested, | |
| 2570 (linenr_T)0, | |
| 2571 (long)(firstlnum - fp->fd_top - 1), | |
| 2572 (linenr_T)MAXLNUM, | |
| 2573 (long)(fp->fd_top - firstlnum)); | |
| 2574 fp->fd_len += fp->fd_top - firstlnum; | |
| 2575 fp->fd_top = firstlnum; | |
| 2576 fold_changed = TRUE; | |
| 2577 } | |
| 2578 else if (flp->start != 0 && lvl == level | |
| 2579 && fp->fd_top != firstlnum) | |
| 2580 { | |
| 2581 /* Existing fold that includes startlnum must stop | |
| 2582 * if we find the start of a new fold at the same | |
| 2583 * level. Split it. Delete contained folds at | |
| 2584 * this point to split them too. */ | |
| 2585 foldRemove(&fp->fd_nested, flp->lnum - fp->fd_top, | |
| 2586 flp->lnum - fp->fd_top); | |
| 2587 i = (int)(fp - (fold_T *)gap->ga_data); | |
| 2588 foldSplit(gap, i, flp->lnum, flp->lnum - 1); | |
| 2589 fp = (fold_T *)gap->ga_data + i + 1; | |
| 2590 /* If using the "marker" or "syntax" method, we | |
| 2591 * need to continue until the end of the fold is | |
| 2592 * found. */ | |
| 2593 if (getlevel == foldlevelMarker | |
| 2594 || getlevel == foldlevelExpr | |
| 2595 || getlevel == foldlevelSyntax) | |
| 2596 finish = TRUE; | |
| 2597 } | |
| 2598 break; | |
| 2599 } | |
| 2600 if (fp->fd_top >= startlnum) | |
| 2601 { | |
| 2602 /* A fold that starts at or after startlnum and stops | |
| 2603 * before the new fold must be deleted. Continue | |
| 2604 * looking for the next one. */ | |
| 2605 deleteFoldEntry(gap, | |
| 2606 (int)(fp - (fold_T *)gap->ga_data), TRUE); | |
| 2607 } | |
| 2608 else | |
| 2609 { | |
| 2610 /* A fold has some lines above startlnum, truncate it | |
| 2611 * to stop just above startlnum. */ | |
| 2612 fp->fd_len = startlnum - fp->fd_top; | |
| 2613 foldMarkAdjustRecurse(&fp->fd_nested, | |
| 2614 (linenr_T)fp->fd_len, (linenr_T)MAXLNUM, | |
| 2615 (linenr_T)MAXLNUM, 0L); | |
| 2616 fold_changed = TRUE; | |
| 2617 } | |
| 2618 } | |
| 2619 else | |
| 2620 { | |
| 2621 /* Insert new fold. Careful: ga_data may be NULL and it | |
| 2622 * may change! */ | |
| 2623 i = (int)(fp - (fold_T *)gap->ga_data); | |
| 2624 if (foldInsert(gap, i) != OK) | |
| 2625 return bot; | |
| 2626 fp = (fold_T *)gap->ga_data + i; | |
| 2627 /* The new fold continues until bot, unless we find the | |
| 2628 * end earlier. */ | |
| 2629 fp->fd_top = firstlnum; | |
| 2630 fp->fd_len = bot - firstlnum + 1; | |
| 2631 /* When the containing fold is open, the new fold is open. | |
| 2632 * The new fold is closed if the fold above it is closed. | |
| 2633 * The first fold depends on the containing fold. */ | |
| 2634 if (topflags == FD_OPEN) | |
| 2635 { | |
| 2636 flp->wp->w_fold_manual = TRUE; | |
| 2637 fp->fd_flags = FD_OPEN; | |
| 2638 } | |
| 2639 else if (i <= 0) | |
| 2640 { | |
| 2641 fp->fd_flags = topflags; | |
| 2642 if (topflags != FD_LEVEL) | |
| 2643 flp->wp->w_fold_manual = TRUE; | |
| 2644 } | |
| 2645 else | |
| 2646 fp->fd_flags = (fp - 1)->fd_flags; | |
| 2647 fp->fd_small = MAYBE; | |
| 2648 /* If using the "marker", "expr" or "syntax" method, we | |
| 2649 * need to continue until the end of the fold is found. */ | |
| 2650 if (getlevel == foldlevelMarker | |
| 2651 || getlevel == foldlevelExpr | |
| 2652 || getlevel == foldlevelSyntax) | |
| 2653 finish = TRUE; | |
| 2654 fold_changed = TRUE; | |
| 2655 break; | |
| 2656 } | |
| 2657 } | |
| 2658 } | |
| 2659 | |
| 2660 if (lvl < level || flp->lnum > linecount) | |
| 2661 { | |
| 2662 /* | |
| 2663 * Found a line with a lower foldlevel, this fold ends just above | |
| 2664 * "flp->lnum". | |
| 2665 */ | |
| 2666 break; | |
| 2667 } | |
| 2668 | |
| 2669 /* | |
| 2670 * The fold includes the line "flp->lnum" and "flp->lnum_save". | |
| 840 | 2671 * Check "fp" for safety. |
| 7 | 2672 */ |
| 840 | 2673 if (lvl > level && fp != NULL) |
| 7 | 2674 { |
| 2675 /* | |
| 2676 * There is a nested fold, handle it recursively. | |
| 2677 */ | |
| 2678 /* At least do one line (can happen when finish is TRUE). */ | |
| 2679 if (bot < flp->lnum) | |
| 2680 bot = flp->lnum; | |
| 2681 | |
| 2682 /* Line numbers in the nested fold are relative to the start of | |
| 2683 * this fold. */ | |
| 2684 flp->lnum = flp->lnum_save - fp->fd_top; | |
| 2685 flp->off += fp->fd_top; | |
| 2686 i = (int)(fp - (fold_T *)gap->ga_data); | |
| 2687 bot = foldUpdateIEMSRecurse(&fp->fd_nested, level + 1, | |
| 2688 startlnum2 - fp->fd_top, flp, getlevel, | |
| 2689 bot - fp->fd_top, fp->fd_flags); | |
| 2690 fp = (fold_T *)gap->ga_data + i; | |
| 2691 flp->lnum += fp->fd_top; | |
| 2692 flp->lnum_save += fp->fd_top; | |
| 2693 flp->off -= fp->fd_top; | |
| 2694 bot += fp->fd_top; | |
| 2695 startlnum2 = flp->lnum; | |
| 2696 | |
| 2697 /* This fold may end at the same line, don't incr. flp->lnum. */ | |
| 2698 } | |
| 2699 else | |
| 2700 { | |
| 2701 /* | |
| 2702 * Get the level of the next line, then continue the loop to check | |
| 2703 * if it ends there. | |
| 2704 * Skip over undefined lines, to find the foldlevel after it. | |
| 2705 * For the last line in the file the foldlevel is always valid. | |
| 2706 */ | |
| 2707 flp->lnum = flp->lnum_save; | |
| 2708 ll = flp->lnum + 1; | |
| 2709 while (!got_int) | |
| 2710 { | |
| 2711 /* Make the previous level available to foldlevel(). */ | |
| 2712 prev_lnum = flp->lnum; | |
| 2713 prev_lnum_lvl = flp->lvl; | |
| 2714 | |
| 2715 if (++flp->lnum > linecount) | |
| 2716 break; | |
| 2717 flp->lvl = flp->lvl_next; | |
| 2718 getlevel(flp); | |
| 2719 if (flp->lvl >= 0 || flp->had_end <= MAX_LEVEL) | |
| 2720 break; | |
| 2721 } | |
| 2722 prev_lnum = 0; | |
| 2723 if (flp->lnum > linecount) | |
| 2724 break; | |
| 2725 | |
| 2726 /* leave flp->lnum_save to lnum of the line that was used to get | |
| 2727 * the level, flp->lnum to the lnum of the next line. */ | |
| 2728 flp->lnum_save = flp->lnum; | |
| 2729 flp->lnum = ll; | |
| 2730 } | |
| 2731 } | |
| 2732 | |
| 2733 if (fp == NULL) /* only happens when got_int is set */ | |
| 2734 return bot; | |
| 2735 | |
| 2736 /* | |
| 2737 * Get here when: | |
| 2738 * lvl < level: the folds ends just above "flp->lnum" | |
| 2739 * lvl >= level: fold continues below "bot" | |
| 2740 */ | |
| 2741 | |
| 2742 /* Current fold at least extends until lnum. */ | |
| 2743 if (fp->fd_len < flp->lnum - fp->fd_top) | |
| 2744 { | |
| 2745 fp->fd_len = flp->lnum - fp->fd_top; | |
| 1513 | 2746 fp->fd_small = MAYBE; |
| 7 | 2747 fold_changed = TRUE; |
| 2748 } | |
| 2749 | |
| 2750 /* Delete contained folds from the end of the last one found until where | |
| 2751 * we stopped looking. */ | |
| 2752 foldRemove(&fp->fd_nested, startlnum2 - fp->fd_top, | |
| 2753 flp->lnum - 1 - fp->fd_top); | |
| 2754 | |
| 2755 if (lvl < level) | |
| 2756 { | |
| 2757 /* End of fold found, update the length when it got shorter. */ | |
| 2758 if (fp->fd_len != flp->lnum - fp->fd_top) | |
| 2759 { | |
| 2760 if (fp->fd_top + fp->fd_len > bot + 1) | |
| 2761 { | |
| 1224 | 2762 /* fold continued below bot */ |
| 7 | 2763 if (getlevel == foldlevelMarker |
| 2764 || getlevel == foldlevelExpr | |
| 2765 || getlevel == foldlevelSyntax) | |
| 2766 { | |
| 2767 /* marker method: truncate the fold and make sure the | |
| 2768 * previously included lines are processed again */ | |
| 2769 bot = fp->fd_top + fp->fd_len - 1; | |
| 2770 fp->fd_len = flp->lnum - fp->fd_top; | |
| 2771 } | |
| 2772 else | |
| 2773 { | |
| 2774 /* indent or expr method: split fold to create a new one | |
| 2775 * below bot */ | |
| 2776 i = (int)(fp - (fold_T *)gap->ga_data); | |
| 2777 foldSplit(gap, i, flp->lnum, bot); | |
| 2778 fp = (fold_T *)gap->ga_data + i; | |
| 2779 } | |
| 2780 } | |
| 2781 else | |
| 2782 fp->fd_len = flp->lnum - fp->fd_top; | |
| 2783 fold_changed = TRUE; | |
| 2784 } | |
| 2785 } | |
| 2786 | |
| 2787 /* delete following folds that end before the current line */ | |
| 2788 for (;;) | |
| 2789 { | |
| 2790 fp2 = fp + 1; | |
| 2791 if (fp2 >= (fold_T *)gap->ga_data + gap->ga_len | |
| 2792 || fp2->fd_top > flp->lnum) | |
| 2793 break; | |
| 2794 if (fp2->fd_top + fp2->fd_len > flp->lnum) | |
| 2795 { | |
| 2796 if (fp2->fd_top < flp->lnum) | |
| 2797 { | |
| 2798 /* Make fold that includes lnum start at lnum. */ | |
| 2799 foldMarkAdjustRecurse(&fp2->fd_nested, | |
| 2800 (linenr_T)0, (long)(flp->lnum - fp2->fd_top - 1), | |
| 2801 (linenr_T)MAXLNUM, (long)(fp2->fd_top - flp->lnum)); | |
| 2802 fp2->fd_len -= flp->lnum - fp2->fd_top; | |
| 2803 fp2->fd_top = flp->lnum; | |
| 2804 fold_changed = TRUE; | |
| 2805 } | |
| 2806 | |
| 2807 if (lvl >= level) | |
| 2808 { | |
| 2809 /* merge new fold with existing fold that follows */ | |
| 2810 foldMerge(fp, gap, fp2); | |
| 2811 } | |
| 2812 break; | |
| 2813 } | |
| 2814 fold_changed = TRUE; | |
| 2815 deleteFoldEntry(gap, (int)(fp2 - (fold_T *)gap->ga_data), TRUE); | |
| 2816 } | |
| 2817 | |
| 2818 /* Need to redraw the lines we inspected, which might be further down than | |
| 2819 * was asked for. */ | |
| 2820 if (bot < flp->lnum - 1) | |
| 2821 bot = flp->lnum - 1; | |
| 2822 | |
| 2823 return bot; | |
| 2824 } | |
| 2825 | |
| 2826 /* foldInsert() {{{2 */ | |
| 2827 /* | |
| 2828 * Insert a new fold in "gap" at position "i". | |
| 2829 * Returns OK for success, FAIL for failure. | |
| 2830 */ | |
| 2831 static int | |
| 2832 foldInsert(gap, i) | |
| 2833 garray_T *gap; | |
| 2834 int i; | |
| 2835 { | |
| 2836 fold_T *fp; | |
| 2837 | |
| 2838 if (ga_grow(gap, 1) != OK) | |
| 2839 return FAIL; | |
| 2840 fp = (fold_T *)gap->ga_data + i; | |
| 2841 if (i < gap->ga_len) | |
| 2842 mch_memmove(fp + 1, fp, sizeof(fold_T) * (gap->ga_len - i)); | |
| 2843 ++gap->ga_len; | |
| 2844 ga_init2(&fp->fd_nested, (int)sizeof(fold_T), 10); | |
| 2845 return OK; | |
| 2846 } | |
| 2847 | |
| 2848 /* foldSplit() {{{2 */ | |
| 2849 /* | |
| 2850 * Split the "i"th fold in "gap", which starts before "top" and ends below | |
| 2851 * "bot" in two pieces, one ending above "top" and the other starting below | |
| 2852 * "bot". | |
| 2853 * The caller must first have taken care of any nested folds from "top" to | |
| 2854 * "bot"! | |
| 2855 */ | |
| 2856 static void | |
| 2857 foldSplit(gap, i, top, bot) | |
| 2858 garray_T *gap; | |
| 2859 int i; | |
| 2860 linenr_T top; | |
| 2861 linenr_T bot; | |
| 2862 { | |
| 2863 fold_T *fp; | |
| 2864 fold_T *fp2; | |
| 2865 garray_T *gap1; | |
| 2866 garray_T *gap2; | |
| 2867 int idx; | |
| 2868 int len; | |
| 2869 | |
| 2870 /* The fold continues below bot, need to split it. */ | |
| 2871 if (foldInsert(gap, i + 1) == FAIL) | |
| 2872 return; | |
| 2873 fp = (fold_T *)gap->ga_data + i; | |
| 2874 fp[1].fd_top = bot + 1; | |
| 2875 fp[1].fd_len = fp->fd_len - (fp[1].fd_top - fp->fd_top); | |
| 2876 fp[1].fd_flags = fp->fd_flags; | |
| 1985 | 2877 fp[1].fd_small = MAYBE; |
| 2878 fp->fd_small = MAYBE; | |
| 7 | 2879 |
| 2880 /* Move nested folds below bot to new fold. There can't be | |
| 2881 * any between top and bot, they have been removed by the caller. */ | |
| 2882 gap1 = &fp->fd_nested; | |
| 2883 gap2 = &fp[1].fd_nested; | |
| 2884 (void)(foldFind(gap1, bot + 1 - fp->fd_top, &fp2)); | |
| 2885 len = (int)((fold_T *)gap1->ga_data + gap1->ga_len - fp2); | |
| 2886 if (len > 0 && ga_grow(gap2, len) == OK) | |
| 2887 { | |
| 2888 for (idx = 0; idx < len; ++idx) | |
| 2889 { | |
| 2890 ((fold_T *)gap2->ga_data)[idx] = fp2[idx]; | |
| 2891 ((fold_T *)gap2->ga_data)[idx].fd_top | |
| 2892 -= fp[1].fd_top - fp->fd_top; | |
| 2893 } | |
| 2894 gap2->ga_len = len; | |
| 2895 gap1->ga_len -= len; | |
| 2896 } | |
| 2897 fp->fd_len = top - fp->fd_top; | |
| 2898 fold_changed = TRUE; | |
| 2899 } | |
| 2900 | |
| 2901 /* foldRemove() {{{2 */ | |
| 2902 /* | |
| 2903 * Remove folds within the range "top" to and including "bot". | |
| 2904 * Check for these situations: | |
| 2905 * 1 2 3 | |
| 2906 * 1 2 3 | |
| 2907 * top 2 3 4 5 | |
| 2908 * 2 3 4 5 | |
| 2909 * bot 2 3 4 5 | |
| 2910 * 3 5 6 | |
| 2911 * 3 5 6 | |
| 2912 * | |
| 2913 * 1: not changed | |
| 1224 | 2914 * 2: truncate to stop above "top" |
| 7 | 2915 * 3: split in two parts, one stops above "top", other starts below "bot". |
| 2916 * 4: deleted | |
| 2917 * 5: made to start below "bot". | |
| 2918 * 6: not changed | |
| 2919 */ | |
| 2920 static void | |
| 2921 foldRemove(gap, top, bot) | |
| 2922 garray_T *gap; | |
| 2923 linenr_T top; | |
| 2924 linenr_T bot; | |
| 2925 { | |
| 2926 fold_T *fp = NULL; | |
| 2927 | |
| 2928 if (bot < top) | |
| 2929 return; /* nothing to do */ | |
| 2930 | |
| 2931 for (;;) | |
| 2932 { | |
| 2933 /* Find fold that includes top or a following one. */ | |
| 2934 if (foldFind(gap, top, &fp) && fp->fd_top < top) | |
| 2935 { | |
| 2936 /* 2: or 3: need to delete nested folds */ | |
| 2937 foldRemove(&fp->fd_nested, top - fp->fd_top, bot - fp->fd_top); | |
| 2938 if (fp->fd_top + fp->fd_len > bot + 1) | |
| 2939 { | |
| 2940 /* 3: need to split it. */ | |
| 2941 foldSplit(gap, (int)(fp - (fold_T *)gap->ga_data), top, bot); | |
| 2942 } | |
| 2943 else | |
| 2944 { | |
| 2945 /* 2: truncate fold at "top". */ | |
| 2946 fp->fd_len = top - fp->fd_top; | |
| 2947 } | |
| 2948 fold_changed = TRUE; | |
| 2949 continue; | |
| 2950 } | |
| 2951 if (fp >= (fold_T *)(gap->ga_data) + gap->ga_len | |
| 2952 || fp->fd_top > bot) | |
| 2953 { | |
| 2954 /* 6: Found a fold below bot, can stop looking. */ | |
| 2955 break; | |
| 2956 } | |
| 2957 if (fp->fd_top >= top) | |
| 2958 { | |
| 2959 /* Found an entry below top. */ | |
| 2960 fold_changed = TRUE; | |
| 36 | 2961 if (fp->fd_top + fp->fd_len - 1 > bot) |
| 7 | 2962 { |
| 2963 /* 5: Make fold that includes bot start below bot. */ | |
| 2964 foldMarkAdjustRecurse(&fp->fd_nested, | |
| 2965 (linenr_T)0, (long)(bot - fp->fd_top), | |
| 2966 (linenr_T)MAXLNUM, (long)(fp->fd_top - bot - 1)); | |
| 2967 fp->fd_len -= bot - fp->fd_top + 1; | |
| 2968 fp->fd_top = bot + 1; | |
| 2969 break; | |
| 2970 } | |
| 2971 | |
| 2972 /* 4: Delete completely contained fold. */ | |
| 2973 deleteFoldEntry(gap, (int)(fp - (fold_T *)gap->ga_data), TRUE); | |
| 2974 } | |
| 2975 } | |
| 2976 } | |
| 2977 | |
| 2978 /* foldMerge() {{{2 */ | |
| 2979 /* | |
| 1224 | 2980 * Merge two adjacent folds (and the nested ones in them). |
| 2981 * This only works correctly when the folds are really adjacent! Thus "fp1" | |
| 7 | 2982 * must end just above "fp2". |
| 2983 * The resulting fold is "fp1", nested folds are moved from "fp2" to "fp1". | |
| 2984 * Fold entry "fp2" in "gap" is deleted. | |
| 2985 */ | |
| 2986 static void | |
| 2987 foldMerge(fp1, gap, fp2) | |
| 2988 fold_T *fp1; | |
| 2989 garray_T *gap; | |
| 2990 fold_T *fp2; | |
| 2991 { | |
| 2992 fold_T *fp3; | |
| 2993 fold_T *fp4; | |
| 2994 int idx; | |
| 2995 garray_T *gap1 = &fp1->fd_nested; | |
| 2996 garray_T *gap2 = &fp2->fd_nested; | |
| 2997 | |
| 2998 /* If the last nested fold in fp1 touches the first nested fold in fp2, | |
| 2999 * merge them recursively. */ | |
| 3000 if (foldFind(gap1, fp1->fd_len - 1L, &fp3) && foldFind(gap2, 0L, &fp4)) | |
| 3001 foldMerge(fp3, gap2, fp4); | |
| 3002 | |
| 3003 /* Move nested folds in fp2 to the end of fp1. */ | |
| 3004 if (gap2->ga_len > 0 && ga_grow(gap1, gap2->ga_len) == OK) | |
| 3005 { | |
| 3006 for (idx = 0; idx < gap2->ga_len; ++idx) | |
| 3007 { | |
| 3008 ((fold_T *)gap1->ga_data)[gap1->ga_len] | |
| 3009 = ((fold_T *)gap2->ga_data)[idx]; | |
| 3010 ((fold_T *)gap1->ga_data)[gap1->ga_len].fd_top += fp1->fd_len; | |
| 3011 ++gap1->ga_len; | |
| 3012 } | |
| 3013 gap2->ga_len = 0; | |
| 3014 } | |
| 3015 | |
| 3016 fp1->fd_len += fp2->fd_len; | |
| 3017 deleteFoldEntry(gap, (int)(fp2 - (fold_T *)gap->ga_data), TRUE); | |
| 3018 fold_changed = TRUE; | |
| 3019 } | |
| 3020 | |
| 3021 /* foldlevelIndent() {{{2 */ | |
| 3022 /* | |
| 3023 * Low level function to get the foldlevel for the "indent" method. | |
| 3024 * Doesn't use any caching. | |
| 3025 * Returns a level of -1 if the foldlevel depends on surrounding lines. | |
| 3026 */ | |
| 3027 static void | |
| 3028 foldlevelIndent(flp) | |
| 3029 fline_T *flp; | |
| 3030 { | |
| 3031 char_u *s; | |
| 3032 buf_T *buf; | |
| 3033 linenr_T lnum = flp->lnum + flp->off; | |
| 3034 | |
| 3035 buf = flp->wp->w_buffer; | |
| 3036 s = skipwhite(ml_get_buf(buf, lnum, FALSE)); | |
| 3037 | |
| 3038 /* empty line or lines starting with a character in 'foldignore': level | |
| 3039 * depends on surrounding lines */ | |
| 3040 if (*s == NUL || vim_strchr(flp->wp->w_p_fdi, *s) != NULL) | |
| 3041 { | |
| 3042 /* first and last line can't be undefined, use level 0 */ | |
| 3043 if (lnum == 1 || lnum == buf->b_ml.ml_line_count) | |
| 3044 flp->lvl = 0; | |
| 3045 else | |
| 3046 flp->lvl = -1; | |
| 3047 } | |
| 3048 else | |
| 5438 | 3049 flp->lvl = get_indent_buf(buf, lnum) / get_sw_value(curbuf); |
| 7 | 3050 if (flp->lvl > flp->wp->w_p_fdn) |
| 1028 | 3051 { |
| 7 | 3052 flp->lvl = flp->wp->w_p_fdn; |
| 1028 | 3053 if (flp->lvl < 0) |
| 3054 flp->lvl = 0; | |
| 3055 } | |
| 7 | 3056 } |
| 3057 | |
| 3058 /* foldlevelDiff() {{{2 */ | |
| 3059 #ifdef FEAT_DIFF | |
| 3060 /* | |
| 3061 * Low level function to get the foldlevel for the "diff" method. | |
| 3062 * Doesn't use any caching. | |
| 3063 */ | |
| 3064 static void | |
| 3065 foldlevelDiff(flp) | |
| 3066 fline_T *flp; | |
| 3067 { | |
| 3068 if (diff_infold(flp->wp, flp->lnum + flp->off)) | |
| 3069 flp->lvl = 1; | |
| 3070 else | |
| 3071 flp->lvl = 0; | |
| 3072 } | |
| 3073 #endif | |
| 3074 | |
| 3075 /* foldlevelExpr() {{{2 */ | |
| 3076 /* | |
| 3077 * Low level function to get the foldlevel for the "expr" method. | |
| 3078 * Doesn't use any caching. | |
| 3079 * Returns a level of -1 if the foldlevel depends on surrounding lines. | |
| 3080 */ | |
| 3081 static void | |
| 3082 foldlevelExpr(flp) | |
| 3083 fline_T *flp; | |
| 3084 { | |
| 3085 #ifndef FEAT_EVAL | |
| 3086 flp->start = FALSE; | |
| 3087 flp->lvl = 0; | |
| 3088 #else | |
| 3089 win_T *win; | |
| 3090 int n; | |
| 3091 int c; | |
| 3092 linenr_T lnum = flp->lnum + flp->off; | |
| 3093 int save_keytyped; | |
| 3094 | |
| 3095 win = curwin; | |
| 3096 curwin = flp->wp; | |
| 3097 curbuf = flp->wp->w_buffer; | |
| 3098 set_vim_var_nr(VV_LNUM, lnum); | |
| 3099 | |
| 3100 flp->start = 0; | |
| 3101 flp->had_end = flp->end; | |
| 3102 flp->end = MAX_LEVEL + 1; | |
| 3103 if (lnum <= 1) | |
| 3104 flp->lvl = 0; | |
| 3105 | |
| 3106 /* KeyTyped may be reset to 0 when calling a function which invokes | |
| 3107 * do_cmdline(). To make 'foldopen' work correctly restore KeyTyped. */ | |
| 3108 save_keytyped = KeyTyped; | |
| 3109 n = eval_foldexpr(flp->wp->w_p_fde, &c); | |
| 3110 KeyTyped = save_keytyped; | |
| 3111 | |
| 3112 switch (c) | |
| 3113 { | |
| 3114 /* "a1", "a2", .. : add to the fold level */ | |
| 3115 case 'a': if (flp->lvl >= 0) | |
| 3116 { | |
| 3117 flp->lvl += n; | |
| 3118 flp->lvl_next = flp->lvl; | |
| 3119 } | |
| 3120 flp->start = n; | |
| 3121 break; | |
| 3122 | |
| 3123 /* "s1", "s2", .. : subtract from the fold level */ | |
| 3124 case 's': if (flp->lvl >= 0) | |
| 3125 { | |
| 3126 if (n > flp->lvl) | |
| 3127 flp->lvl_next = 0; | |
| 3128 else | |
| 3129 flp->lvl_next = flp->lvl - n; | |
| 3130 flp->end = flp->lvl_next + 1; | |
| 3131 } | |
| 3132 break; | |
| 3133 | |
| 3134 /* ">1", ">2", .. : start a fold with a certain level */ | |
| 3135 case '>': flp->lvl = n; | |
| 3136 flp->lvl_next = n; | |
| 3137 flp->start = 1; | |
| 3138 break; | |
| 3139 | |
| 3140 /* "<1", "<2", .. : end a fold with a certain level */ | |
| 3141 case '<': flp->lvl_next = n - 1; | |
| 3142 flp->end = n; | |
| 3143 break; | |
| 3144 | |
| 3145 /* "=": No change in level */ | |
| 3146 case '=': flp->lvl_next = flp->lvl; | |
| 3147 break; | |
| 3148 | |
| 3149 /* "-1", "0", "1", ..: set fold level */ | |
| 3150 default: if (n < 0) | |
| 3151 /* Use the current level for the next line, so that "a1" | |
| 3152 * will work there. */ | |
| 3153 flp->lvl_next = flp->lvl; | |
| 3154 else | |
| 3155 flp->lvl_next = n; | |
| 3156 flp->lvl = n; | |
| 3157 break; | |
| 3158 } | |
| 3159 | |
| 3160 /* If the level is unknown for the first or the last line in the file, use | |
| 3161 * level 0. */ | |
| 3162 if (flp->lvl < 0) | |
| 3163 { | |
| 3164 if (lnum <= 1) | |
| 3165 { | |
| 3166 flp->lvl = 0; | |
| 3167 flp->lvl_next = 0; | |
| 3168 } | |
| 3169 if (lnum == curbuf->b_ml.ml_line_count) | |
| 3170 flp->lvl_next = 0; | |
| 3171 } | |
| 3172 | |
| 3173 curwin = win; | |
| 3174 curbuf = curwin->w_buffer; | |
| 3175 #endif | |
| 3176 } | |
| 3177 | |
| 3178 /* parseMarker() {{{2 */ | |
| 3179 /* | |
| 3180 * Parse 'foldmarker' and set "foldendmarker", "foldstartmarkerlen" and | |
| 3181 * "foldendmarkerlen". | |
| 3182 * Relies on the option value to have been checked for correctness already. | |
| 3183 */ | |
| 3184 static void | |
| 3185 parseMarker(wp) | |
| 3186 win_T *wp; | |
| 3187 { | |
| 3188 foldendmarker = vim_strchr(wp->w_p_fmr, ','); | |
| 3189 foldstartmarkerlen = (int)(foldendmarker++ - wp->w_p_fmr); | |
| 3190 foldendmarkerlen = (int)STRLEN(foldendmarker); | |
| 3191 } | |
| 3192 | |
| 3193 /* foldlevelMarker() {{{2 */ | |
| 3194 /* | |
| 3195 * Low level function to get the foldlevel for the "marker" method. | |
| 3196 * "foldendmarker", "foldstartmarkerlen" and "foldendmarkerlen" must have been | |
| 3197 * set before calling this. | |
| 3198 * Requires that flp->lvl is set to the fold level of the previous line! | |
| 3199 * Careful: This means you can't call this function twice on the same line. | |
| 3200 * Doesn't use any caching. | |
| 3201 * Sets flp->start when a start marker was found. | |
| 3202 */ | |
| 3203 static void | |
| 3204 foldlevelMarker(flp) | |
| 3205 fline_T *flp; | |
| 3206 { | |
| 3207 char_u *startmarker; | |
| 3208 int cstart; | |
| 3209 int cend; | |
| 3210 int start_lvl = flp->lvl; | |
| 3211 char_u *s; | |
| 3212 int n; | |
| 3213 | |
| 3214 /* cache a few values for speed */ | |
| 3215 startmarker = flp->wp->w_p_fmr; | |
| 3216 cstart = *startmarker; | |
| 3217 ++startmarker; | |
| 3218 cend = *foldendmarker; | |
| 3219 | |
| 3220 /* Default: no start found, next level is same as current level */ | |
| 3221 flp->start = 0; | |
| 3222 flp->lvl_next = flp->lvl; | |
| 3223 | |
| 3224 s = ml_get_buf(flp->wp->w_buffer, flp->lnum + flp->off, FALSE); | |
| 3225 while (*s) | |
| 3226 { | |
| 3227 if (*s == cstart | |
| 3228 && STRNCMP(s + 1, startmarker, foldstartmarkerlen - 1) == 0) | |
| 3229 { | |
| 3230 /* found startmarker: set flp->lvl */ | |
| 3231 s += foldstartmarkerlen; | |
| 3232 if (VIM_ISDIGIT(*s)) | |
| 3233 { | |
| 3234 n = atoi((char *)s); | |
| 3235 if (n > 0) | |
| 3236 { | |
| 3237 flp->lvl = n; | |
| 3238 flp->lvl_next = n; | |
| 3239 if (n <= start_lvl) | |
| 3240 flp->start = 1; | |
| 3241 else | |
| 3242 flp->start = n - start_lvl; | |
| 3243 } | |
| 3244 } | |
| 3245 else | |
| 3246 { | |
| 3247 ++flp->lvl; | |
| 3248 ++flp->lvl_next; | |
| 3249 ++flp->start; | |
| 3250 } | |
| 3251 } | |
| 3252 else if (*s == cend | |
| 3253 && STRNCMP(s + 1, foldendmarker + 1, foldendmarkerlen - 1) == 0) | |
| 3254 { | |
| 3255 /* found endmarker: set flp->lvl_next */ | |
| 3256 s += foldendmarkerlen; | |
| 3257 if (VIM_ISDIGIT(*s)) | |
| 3258 { | |
| 3259 n = atoi((char *)s); | |
| 3260 if (n > 0) | |
| 3261 { | |
| 3262 flp->lvl = n; | |
| 3263 flp->lvl_next = n - 1; | |
| 3264 /* never start a fold with an end marker */ | |
|
2054
79b8d69a4588
updated for version 7.2.340
Bram Moolenaar <bram@zimbu.org>
parents:
1985
diff
changeset
|
3265 if (flp->lvl_next > start_lvl) |
|
79b8d69a4588
updated for version 7.2.340
Bram Moolenaar <bram@zimbu.org>
parents:
1985
diff
changeset
|
3266 flp->lvl_next = start_lvl; |
| 7 | 3267 } |
| 3268 } | |
| 3269 else | |
| 3270 --flp->lvl_next; | |
| 3271 } | |
| 3272 else | |
| 651 | 3273 mb_ptr_adv(s); |
| 7 | 3274 } |
| 3275 | |
| 3276 /* The level can't go negative, must be missing a start marker. */ | |
| 3277 if (flp->lvl_next < 0) | |
| 3278 flp->lvl_next = 0; | |
| 3279 } | |
| 3280 | |
| 3281 /* foldlevelSyntax() {{{2 */ | |
| 3282 /* | |
| 3283 * Low level function to get the foldlevel for the "syntax" method. | |
| 3284 * Doesn't use any caching. | |
| 3285 */ | |
| 3286 static void | |
| 3287 foldlevelSyntax(flp) | |
| 3288 fline_T *flp; | |
| 3289 { | |
| 3290 #ifndef FEAT_SYN_HL | |
| 3291 flp->start = 0; | |
| 3292 flp->lvl = 0; | |
| 3293 #else | |
| 3294 linenr_T lnum = flp->lnum + flp->off; | |
| 3295 int n; | |
| 3296 | |
| 3297 /* Use the maximum fold level at the start of this line and the next. */ | |
| 3298 flp->lvl = syn_get_foldlevel(flp->wp, lnum); | |
| 3299 flp->start = 0; | |
| 3300 if (lnum < flp->wp->w_buffer->b_ml.ml_line_count) | |
| 3301 { | |
| 3302 n = syn_get_foldlevel(flp->wp, lnum + 1); | |
| 3303 if (n > flp->lvl) | |
| 3304 { | |
| 3305 flp->start = n - flp->lvl; /* fold(s) start here */ | |
| 3306 flp->lvl = n; | |
| 3307 } | |
| 3308 } | |
| 3309 #endif | |
| 3310 } | |
| 3311 | |
| 3312 /* functions for storing the fold state in a View {{{1 */ | |
| 3313 /* put_folds() {{{2 */ | |
| 3314 #if defined(FEAT_SESSION) || defined(PROTO) | |
| 3315 static int put_folds_recurse __ARGS((FILE *fd, garray_T *gap, linenr_T off)); | |
| 3392 | 3316 static int put_foldopen_recurse __ARGS((FILE *fd, win_T *wp, garray_T *gap, linenr_T off)); |
| 3317 static int put_fold_open_close __ARGS((FILE *fd, fold_T *fp, linenr_T off)); | |
| 7 | 3318 |
| 3319 /* | |
| 3320 * Write commands to "fd" to restore the manual folds in window "wp". | |
| 3321 * Return FAIL if writing fails. | |
| 3322 */ | |
| 3323 int | |
| 3324 put_folds(fd, wp) | |
| 3325 FILE *fd; | |
| 3326 win_T *wp; | |
| 3327 { | |
| 3328 if (foldmethodIsManual(wp)) | |
| 3329 { | |
| 3330 if (put_line(fd, "silent! normal! zE") == FAIL | |
| 3331 || put_folds_recurse(fd, &wp->w_folds, (linenr_T)0) == FAIL) | |
| 3332 return FAIL; | |
| 3333 } | |
| 3334 | |
| 3335 /* If some folds are manually opened/closed, need to restore that. */ | |
| 3336 if (wp->w_fold_manual) | |
| 3392 | 3337 return put_foldopen_recurse(fd, wp, &wp->w_folds, (linenr_T)0); |
| 7 | 3338 |
| 3339 return OK; | |
| 3340 } | |
| 3341 | |
| 3342 /* put_folds_recurse() {{{2 */ | |
| 3343 /* | |
| 3344 * Write commands to "fd" to recreate manually created folds. | |
| 3345 * Returns FAIL when writing failed. | |
| 3346 */ | |
| 3347 static int | |
| 3348 put_folds_recurse(fd, gap, off) | |
| 3349 FILE *fd; | |
| 3350 garray_T *gap; | |
| 3351 linenr_T off; | |
| 3352 { | |
| 3353 int i; | |
| 3354 fold_T *fp; | |
| 3355 | |
| 3356 fp = (fold_T *)gap->ga_data; | |
| 3357 for (i = 0; i < gap->ga_len; i++) | |
| 3358 { | |
| 3359 /* Do nested folds first, they will be created closed. */ | |
| 3360 if (put_folds_recurse(fd, &fp->fd_nested, off + fp->fd_top) == FAIL) | |
| 3361 return FAIL; | |
| 3362 if (fprintf(fd, "%ld,%ldfold", fp->fd_top + off, | |
| 3363 fp->fd_top + off + fp->fd_len - 1) < 0 | |
| 3364 || put_eol(fd) == FAIL) | |
| 3365 return FAIL; | |
| 3366 ++fp; | |
| 3367 } | |
| 3368 return OK; | |
| 3369 } | |
| 3370 | |
| 3371 /* put_foldopen_recurse() {{{2 */ | |
| 3372 /* | |
| 3373 * Write commands to "fd" to open and close manually opened/closed folds. | |
| 3374 * Returns FAIL when writing failed. | |
| 3375 */ | |
| 3376 static int | |
| 3392 | 3377 put_foldopen_recurse(fd, wp, gap, off) |
| 7 | 3378 FILE *fd; |
| 3392 | 3379 win_T *wp; |
| 7 | 3380 garray_T *gap; |
| 3381 linenr_T off; | |
| 3382 { | |
| 3383 int i; | |
| 3392 | 3384 int level; |
| 7 | 3385 fold_T *fp; |
| 3386 | |
| 3387 fp = (fold_T *)gap->ga_data; | |
| 3388 for (i = 0; i < gap->ga_len; i++) | |
| 3389 { | |
| 3390 if (fp->fd_flags != FD_LEVEL) | |
| 3391 { | |
| 3392 if (fp->fd_nested.ga_len > 0) | |
| 3393 { | |
| 3392 | 3394 /* open nested folds while this fold is open */ |
| 7 | 3395 if (fprintf(fd, "%ld", fp->fd_top + off) < 0 |
| 3396 || put_eol(fd) == FAIL | |
| 3766 | 3397 || put_line(fd, "normal! zo") == FAIL) |
| 7 | 3398 return FAIL; |
| 3392 | 3399 if (put_foldopen_recurse(fd, wp, &fp->fd_nested, |
| 3400 off + fp->fd_top) | |
| 7 | 3401 == FAIL) |
| 3402 return FAIL; | |
| 3392 | 3403 /* close the parent when needed */ |
| 3404 if (fp->fd_flags == FD_CLOSED) | |
| 3405 { | |
| 3406 if (put_fold_open_close(fd, fp, off) == FAIL) | |
| 3407 return FAIL; | |
| 3408 } | |
| 3409 } | |
| 3410 else | |
| 3411 { | |
| 3412 /* Open or close the leaf according to the window foldlevel. | |
| 3413 * Do not close a leaf that is already closed, as it will close | |
| 3414 * the parent. */ | |
| 3415 level = foldLevelWin(wp, off + fp->fd_top); | |
| 3416 if ((fp->fd_flags == FD_CLOSED && wp->w_p_fdl >= level) | |
| 3417 || (fp->fd_flags != FD_CLOSED && wp->w_p_fdl < level)) | |
| 3418 if (put_fold_open_close(fd, fp, off) == FAIL) | |
| 3419 return FAIL; | |
| 7 | 3420 } |
| 3421 } | |
| 3422 ++fp; | |
| 3423 } | |
| 3424 | |
| 3425 return OK; | |
| 3426 } | |
| 3392 | 3427 |
| 3428 /* put_fold_open_close() {{{2 */ | |
| 3429 /* | |
| 3430 * Write the open or close command to "fd". | |
| 3431 * Returns FAIL when writing failed. | |
| 3432 */ | |
| 3433 static int | |
| 3434 put_fold_open_close(fd, fp, off) | |
| 3435 FILE *fd; | |
| 3436 fold_T *fp; | |
| 3437 linenr_T off; | |
| 3438 { | |
| 3439 if (fprintf(fd, "%ld", fp->fd_top + off) < 0 | |
| 3440 || put_eol(fd) == FAIL | |
| 3766 | 3441 || fprintf(fd, "normal! z%c", |
| 3392 | 3442 fp->fd_flags == FD_CLOSED ? 'c' : 'o') < 0 |
| 3443 || put_eol(fd) == FAIL) | |
| 3444 return FAIL; | |
| 3445 | |
| 3446 return OK; | |
| 3447 } | |
| 7 | 3448 #endif /* FEAT_SESSION */ |
| 3449 | |
| 3450 /* }}}1 */ | |
| 3451 #endif /* defined(FEAT_FOLDING) || defined(PROTO) */ |