Mercurial > vim
annotate src/fold.c @ 5016:875a0aeb301c v7.3.1252
updated for version 7.3.1252
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| author | Bram Moolenaar <bram@vim.org> |
|---|---|
| date | Thu, 27 Jun 2013 22:02:02 +0200 |
| parents | be2973afe770 |
| children | 878ed73c7070 |
| 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 #ifdef FEAT_VISUAL | |
| 434 /* Force a redraw to remove the Visual highlighting. */ | |
| 435 if (had_visual) | |
| 436 redraw_curbuf_later(INVERTED); | |
| 437 #endif | |
| 438 } | |
| 439 | |
| 440 /* openFold() {{{2 */ | |
| 441 /* | |
| 442 * Open fold for current window at line "lnum". | |
| 443 * Repeat "count" times. | |
| 444 */ | |
| 445 void | |
| 446 openFold(lnum, count) | |
| 447 linenr_T lnum; | |
| 448 long count; | |
| 449 { | |
| 450 setFoldRepeat(lnum, count, TRUE); | |
| 451 } | |
| 452 | |
| 453 /* openFoldRecurse() {{{2 */ | |
| 454 /* | |
| 455 * Open fold for current window at line "lnum" recursively. | |
| 456 */ | |
| 457 void | |
| 458 openFoldRecurse(lnum) | |
| 459 linenr_T lnum; | |
| 460 { | |
| 461 (void)setManualFold(lnum, TRUE, TRUE, NULL); | |
| 462 } | |
| 463 | |
| 464 /* foldOpenCursor() {{{2 */ | |
| 465 /* | |
| 466 * Open folds until the cursor line is not in a closed fold. | |
| 467 */ | |
| 468 void | |
| 469 foldOpenCursor() | |
| 470 { | |
| 471 int done; | |
| 472 | |
| 473 checkupdate(curwin); | |
| 474 if (hasAnyFolding(curwin)) | |
| 475 for (;;) | |
| 476 { | |
| 477 done = DONE_NOTHING; | |
| 478 (void)setManualFold(curwin->w_cursor.lnum, TRUE, FALSE, &done); | |
| 479 if (!(done & DONE_ACTION)) | |
| 480 break; | |
| 481 } | |
| 482 } | |
| 483 | |
| 484 /* newFoldLevel() {{{2 */ | |
| 485 /* | |
| 486 * Set new foldlevel for current window. | |
| 487 */ | |
| 488 void | |
| 489 newFoldLevel() | |
| 490 { | |
| 491 newFoldLevelWin(curwin); | |
| 492 | |
| 493 #ifdef FEAT_DIFF | |
| 494 if (foldmethodIsDiff(curwin) && curwin->w_p_scb) | |
| 495 { | |
| 496 win_T *wp; | |
| 497 | |
| 498 /* | |
| 499 * Set the same foldlevel in other windows in diff mode. | |
| 500 */ | |
| 501 FOR_ALL_WINDOWS(wp) | |
| 502 { | |
| 503 if (wp != curwin && foldmethodIsDiff(wp) && wp->w_p_scb) | |
| 504 { | |
| 505 wp->w_p_fdl = curwin->w_p_fdl; | |
| 506 newFoldLevelWin(wp); | |
| 507 } | |
| 508 } | |
| 509 } | |
| 510 #endif | |
| 511 } | |
| 512 | |
| 513 static void | |
| 514 newFoldLevelWin(wp) | |
| 515 win_T *wp; | |
| 516 { | |
| 517 fold_T *fp; | |
| 518 int i; | |
| 519 | |
| 520 checkupdate(wp); | |
| 521 if (wp->w_fold_manual) | |
| 522 { | |
| 523 /* Set all flags for the first level of folds to FD_LEVEL. Following | |
| 524 * manual open/close will then change the flags to FD_OPEN or | |
| 525 * FD_CLOSED for those folds that don't use 'foldlevel'. */ | |
| 526 fp = (fold_T *)wp->w_folds.ga_data; | |
| 527 for (i = 0; i < wp->w_folds.ga_len; ++i) | |
| 528 fp[i].fd_flags = FD_LEVEL; | |
| 529 wp->w_fold_manual = FALSE; | |
| 530 } | |
| 531 changed_window_setting_win(wp); | |
| 532 } | |
| 533 | |
| 534 /* foldCheckClose() {{{2 */ | |
| 535 /* | |
| 536 * Apply 'foldlevel' to all folds that don't contain the cursor. | |
| 537 */ | |
| 538 void | |
| 539 foldCheckClose() | |
| 540 { | |
| 541 if (*p_fcl != NUL) /* can only be "all" right now */ | |
| 542 { | |
| 543 checkupdate(curwin); | |
| 544 if (checkCloseRec(&curwin->w_folds, curwin->w_cursor.lnum, | |
| 545 (int)curwin->w_p_fdl)) | |
| 546 changed_window_setting(); | |
| 547 } | |
| 548 } | |
| 549 | |
| 550 /* checkCloseRec() {{{2 */ | |
| 551 static int | |
| 552 checkCloseRec(gap, lnum, level) | |
| 553 garray_T *gap; | |
| 554 linenr_T lnum; | |
| 555 int level; | |
| 556 { | |
| 557 fold_T *fp; | |
| 558 int retval = FALSE; | |
| 559 int i; | |
| 560 | |
| 561 fp = (fold_T *)gap->ga_data; | |
| 562 for (i = 0; i < gap->ga_len; ++i) | |
| 563 { | |
| 564 /* Only manually opened folds may need to be closed. */ | |
| 565 if (fp[i].fd_flags == FD_OPEN) | |
| 566 { | |
| 567 if (level <= 0 && (lnum < fp[i].fd_top | |
| 568 || lnum >= fp[i].fd_top + fp[i].fd_len)) | |
| 569 { | |
| 570 fp[i].fd_flags = FD_LEVEL; | |
| 571 retval = TRUE; | |
| 572 } | |
| 573 else | |
| 574 retval |= checkCloseRec(&fp[i].fd_nested, lnum - fp[i].fd_top, | |
| 575 level - 1); | |
| 576 } | |
| 577 } | |
| 578 return retval; | |
| 579 } | |
| 580 | |
| 581 /* foldCreateAllowed() {{{2 */ | |
| 582 /* | |
| 583 * Return TRUE if it's allowed to manually create or delete a fold. | |
| 584 * Give an error message and return FALSE if not. | |
| 585 */ | |
| 586 int | |
| 587 foldManualAllowed(create) | |
| 588 int create; | |
| 589 { | |
| 590 if (foldmethodIsManual(curwin) || foldmethodIsMarker(curwin)) | |
| 591 return TRUE; | |
| 592 if (create) | |
| 593 EMSG(_("E350: Cannot create fold with current 'foldmethod'")); | |
| 594 else | |
| 595 EMSG(_("E351: Cannot delete fold with current 'foldmethod'")); | |
| 596 return FALSE; | |
| 597 } | |
| 598 | |
| 599 /* foldCreate() {{{2 */ | |
| 600 /* | |
| 601 * Create a fold from line "start" to line "end" (inclusive) in the current | |
| 602 * window. | |
| 603 */ | |
| 604 void | |
| 605 foldCreate(start, end) | |
| 606 linenr_T start; | |
| 607 linenr_T end; | |
| 608 { | |
| 609 fold_T *fp; | |
| 610 garray_T *gap; | |
| 611 garray_T fold_ga; | |
| 612 int i, j; | |
| 613 int cont; | |
| 614 int use_level = FALSE; | |
| 615 int closed = FALSE; | |
| 616 int level = 0; | |
| 617 linenr_T start_rel = start; | |
| 618 linenr_T end_rel = end; | |
| 619 | |
| 620 if (start > end) | |
| 621 { | |
| 622 /* reverse the range */ | |
| 623 end = start_rel; | |
| 624 start = end_rel; | |
| 625 start_rel = start; | |
| 626 end_rel = end; | |
| 627 } | |
| 628 | |
| 629 /* When 'foldmethod' is "marker" add markers, which creates the folds. */ | |
| 630 if (foldmethodIsMarker(curwin)) | |
| 631 { | |
| 632 foldCreateMarkers(start, end); | |
| 633 return; | |
| 634 } | |
| 635 | |
| 636 checkupdate(curwin); | |
| 637 | |
| 638 /* Find the place to insert the new fold. */ | |
| 639 gap = &curwin->w_folds; | |
| 640 for (;;) | |
| 641 { | |
| 642 if (!foldFind(gap, start_rel, &fp)) | |
| 643 break; | |
| 644 if (fp->fd_top + fp->fd_len > end_rel) | |
| 645 { | |
| 646 /* New fold is completely inside this fold: Go one level deeper. */ | |
| 647 gap = &fp->fd_nested; | |
| 648 start_rel -= fp->fd_top; | |
| 649 end_rel -= fp->fd_top; | |
| 650 if (use_level || fp->fd_flags == FD_LEVEL) | |
| 651 { | |
| 652 use_level = TRUE; | |
| 653 if (level >= curwin->w_p_fdl) | |
| 654 closed = TRUE; | |
| 655 } | |
| 656 else if (fp->fd_flags == FD_CLOSED) | |
| 657 closed = TRUE; | |
| 658 ++level; | |
| 659 } | |
| 660 else | |
| 661 { | |
| 662 /* This fold and new fold overlap: Insert here and move some folds | |
| 663 * inside the new fold. */ | |
| 664 break; | |
| 665 } | |
| 666 } | |
| 667 | |
| 668 i = (int)(fp - (fold_T *)gap->ga_data); | |
| 669 if (ga_grow(gap, 1) == OK) | |
| 670 { | |
| 671 fp = (fold_T *)gap->ga_data + i; | |
| 672 ga_init2(&fold_ga, (int)sizeof(fold_T), 10); | |
| 673 | |
| 674 /* Count number of folds that will be contained in the new fold. */ | |
| 675 for (cont = 0; i + cont < gap->ga_len; ++cont) | |
| 676 if (fp[cont].fd_top > end_rel) | |
| 677 break; | |
| 678 if (cont > 0 && ga_grow(&fold_ga, cont) == OK) | |
| 679 { | |
| 680 /* If the first fold starts before the new fold, let the new fold | |
| 681 * start there. Otherwise the existing fold would change. */ | |
| 682 if (start_rel > fp->fd_top) | |
| 683 start_rel = fp->fd_top; | |
| 684 | |
| 685 /* When last contained fold isn't completely contained, adjust end | |
| 686 * of new fold. */ | |
| 687 if (end_rel < fp[cont - 1].fd_top + fp[cont - 1].fd_len - 1) | |
| 688 end_rel = fp[cont - 1].fd_top + fp[cont - 1].fd_len - 1; | |
| 689 /* Move contained folds to inside new fold. */ | |
| 690 mch_memmove(fold_ga.ga_data, fp, sizeof(fold_T) * cont); | |
| 691 fold_ga.ga_len += cont; | |
| 692 i += cont; | |
| 693 | |
| 694 /* Adjust line numbers in contained folds to be relative to the | |
| 695 * new fold. */ | |
| 696 for (j = 0; j < cont; ++j) | |
| 697 ((fold_T *)fold_ga.ga_data)[j].fd_top -= start_rel; | |
| 698 } | |
| 699 /* Move remaining entries to after the new fold. */ | |
| 700 if (i < gap->ga_len) | |
| 701 mch_memmove(fp + 1, (fold_T *)gap->ga_data + i, | |
| 702 sizeof(fold_T) * (gap->ga_len - i)); | |
| 703 gap->ga_len = gap->ga_len + 1 - cont; | |
| 704 | |
| 705 /* insert new fold */ | |
| 706 fp->fd_nested = fold_ga; | |
| 707 fp->fd_top = start_rel; | |
| 708 fp->fd_len = end_rel - start_rel + 1; | |
| 709 | |
| 710 /* We want the new fold to be closed. If it would remain open because | |
| 711 * of using 'foldlevel', need to adjust fd_flags of containing folds. | |
| 712 */ | |
| 713 if (use_level && !closed && level < curwin->w_p_fdl) | |
| 714 closeFold(start, 1L); | |
| 715 if (!use_level) | |
| 716 curwin->w_fold_manual = TRUE; | |
| 717 fp->fd_flags = FD_CLOSED; | |
| 718 fp->fd_small = MAYBE; | |
| 719 | |
| 720 /* redraw */ | |
| 721 changed_window_setting(); | |
| 722 } | |
| 723 } | |
| 724 | |
| 725 /* deleteFold() {{{2 */ | |
| 726 /* | |
| 727 * Delete a fold at line "start" in the current window. | |
| 728 * When "end" is not 0, delete all folds from "start" to "end". | |
| 729 * When "recursive" is TRUE delete recursively. | |
| 730 */ | |
| 731 void | |
| 732 deleteFold(start, end, recursive, had_visual) | |
| 733 linenr_T start; | |
| 734 linenr_T end; | |
| 735 int recursive; | |
| 736 int had_visual; /* TRUE when Visual selection used */ | |
| 737 { | |
| 738 garray_T *gap; | |
| 739 fold_T *fp; | |
| 740 garray_T *found_ga; | |
| 741 fold_T *found_fp = NULL; | |
| 742 linenr_T found_off = 0; | |
| 1780 | 743 int use_level; |
| 7 | 744 int maybe_small = FALSE; |
| 745 int level = 0; | |
| 746 linenr_T lnum = start; | |
| 747 linenr_T lnum_off; | |
| 748 int did_one = FALSE; | |
| 749 linenr_T first_lnum = MAXLNUM; | |
| 750 linenr_T last_lnum = 0; | |
| 751 | |
| 752 checkupdate(curwin); | |
| 753 | |
| 754 while (lnum <= end) | |
| 755 { | |
| 756 /* Find the deepest fold for "start". */ | |
| 757 gap = &curwin->w_folds; | |
| 758 found_ga = NULL; | |
| 759 lnum_off = 0; | |
| 1780 | 760 use_level = FALSE; |
| 7 | 761 for (;;) |
| 762 { | |
| 763 if (!foldFind(gap, lnum - lnum_off, &fp)) | |
| 764 break; | |
| 765 /* lnum is inside this fold, remember info */ | |
| 766 found_ga = gap; | |
| 767 found_fp = fp; | |
| 768 found_off = lnum_off; | |
| 769 | |
| 770 /* if "lnum" is folded, don't check nesting */ | |
| 771 if (check_closed(curwin, fp, &use_level, level, | |
| 772 &maybe_small, lnum_off)) | |
| 773 break; | |
| 774 | |
| 775 /* check nested folds */ | |
| 776 gap = &fp->fd_nested; | |
| 777 lnum_off += fp->fd_top; | |
| 778 ++level; | |
| 779 } | |
| 780 if (found_ga == NULL) | |
| 781 { | |
| 782 ++lnum; | |
| 783 } | |
| 784 else | |
| 785 { | |
| 786 lnum = found_fp->fd_top + found_fp->fd_len + found_off; | |
| 787 | |
| 788 if (foldmethodIsManual(curwin)) | |
| 789 deleteFoldEntry(found_ga, | |
| 790 (int)(found_fp - (fold_T *)found_ga->ga_data), recursive); | |
| 791 else | |
| 792 { | |
| 1780 | 793 if (first_lnum > found_fp->fd_top + found_off) |
| 794 first_lnum = found_fp->fd_top + found_off; | |
| 795 if (last_lnum < lnum) | |
| 7 | 796 last_lnum = lnum; |
| 1780 | 797 if (!did_one) |
| 798 parseMarker(curwin); | |
| 7 | 799 deleteFoldMarkers(found_fp, recursive, found_off); |
| 800 } | |
| 1780 | 801 did_one = TRUE; |
| 7 | 802 |
| 803 /* redraw window */ | |
| 804 changed_window_setting(); | |
| 805 } | |
| 806 } | |
| 807 if (!did_one) | |
| 808 { | |
| 809 EMSG(_(e_nofold)); | |
| 810 #ifdef FEAT_VISUAL | |
| 811 /* Force a redraw to remove the Visual highlighting. */ | |
| 812 if (had_visual) | |
| 813 redraw_curbuf_later(INVERTED); | |
| 814 #endif | |
| 815 } | |
| 1780 | 816 else |
| 817 /* Deleting markers may make cursor column invalid. */ | |
| 818 check_cursor_col(); | |
| 819 | |
| 7 | 820 if (last_lnum > 0) |
| 821 changed_lines(first_lnum, (colnr_T)0, last_lnum, 0L); | |
| 822 } | |
| 823 | |
| 824 /* clearFolding() {{{2 */ | |
| 825 /* | |
| 826 * Remove all folding for window "win". | |
| 827 */ | |
| 828 void | |
| 829 clearFolding(win) | |
| 830 win_T *win; | |
| 831 { | |
| 832 deleteFoldRecurse(&win->w_folds); | |
| 833 win->w_foldinvalid = FALSE; | |
| 834 } | |
| 835 | |
| 836 /* foldUpdate() {{{2 */ | |
| 837 /* | |
| 838 * Update folds for changes in the buffer of a window. | |
| 839 * Note that inserted/deleted lines must have already been taken care of by | |
| 840 * calling foldMarkAdjust(). | |
| 841 * The changes in lines from top to bot (inclusive). | |
| 842 */ | |
| 843 void | |
| 844 foldUpdate(wp, top, bot) | |
| 845 win_T *wp; | |
| 846 linenr_T top; | |
| 847 linenr_T bot; | |
| 848 { | |
| 849 fold_T *fp; | |
| 850 | |
| 851 /* Mark all folds from top to bot as maybe-small. */ | |
|
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852 (void)foldFind(&curwin->w_folds, top, &fp); |
| 7 | 853 while (fp < (fold_T *)curwin->w_folds.ga_data + curwin->w_folds.ga_len |
| 854 && fp->fd_top < bot) | |
| 855 { | |
| 856 fp->fd_small = MAYBE; | |
| 857 ++fp; | |
| 858 } | |
| 859 | |
| 860 if (foldmethodIsIndent(wp) | |
| 861 || foldmethodIsExpr(wp) | |
| 862 || foldmethodIsMarker(wp) | |
| 863 #ifdef FEAT_DIFF | |
| 864 || foldmethodIsDiff(wp) | |
| 865 #endif | |
| 866 || foldmethodIsSyntax(wp)) | |
| 1424 | 867 { |
| 868 int save_got_int = got_int; | |
| 869 | |
| 870 /* reset got_int here, otherwise it won't work */ | |
| 871 got_int = FALSE; | |
| 7 | 872 foldUpdateIEMS(wp, top, bot); |
| 1424 | 873 got_int |= save_got_int; |
| 874 } | |
| 7 | 875 } |
| 876 | |
| 877 /* foldUpdateAll() {{{2 */ | |
| 878 /* | |
| 879 * Update all lines in a window for folding. | |
| 880 * Used when a fold setting changes or after reloading the buffer. | |
| 881 * The actual updating is postponed until fold info is used, to avoid doing | |
| 882 * every time a setting is changed or a syntax item is added. | |
| 883 */ | |
| 884 void | |
| 885 foldUpdateAll(win) | |
| 886 win_T *win; | |
| 887 { | |
| 888 win->w_foldinvalid = TRUE; | |
| 889 redraw_win_later(win, NOT_VALID); | |
| 890 } | |
| 891 | |
| 892 /* foldMoveTo() {{{2 */ | |
| 893 /* | |
| 894 * If "updown" is FALSE: Move to the start or end of the fold. | |
| 895 * If "updown" is TRUE: move to fold at the same level. | |
| 896 * If not moved return FAIL. | |
| 897 */ | |
| 898 int | |
| 899 foldMoveTo(updown, dir, count) | |
| 900 int updown; | |
| 901 int dir; /* FORWARD or BACKWARD */ | |
| 902 long count; | |
| 903 { | |
| 904 long n; | |
| 905 int retval = FAIL; | |
| 906 linenr_T lnum_off; | |
| 907 linenr_T lnum_found; | |
| 908 linenr_T lnum; | |
| 909 int use_level; | |
| 910 int maybe_small; | |
| 911 garray_T *gap; | |
| 912 fold_T *fp; | |
| 913 int level; | |
| 914 int last; | |
| 915 | |
| 36 | 916 checkupdate(curwin); |
| 917 | |
| 7 | 918 /* Repeat "count" times. */ |
| 919 for (n = 0; n < count; ++n) | |
| 920 { | |
| 921 /* Find nested folds. Stop when a fold is closed. The deepest fold | |
| 922 * that moves the cursor is used. */ | |
| 923 lnum_off = 0; | |
| 924 gap = &curwin->w_folds; | |
| 925 use_level = FALSE; | |
| 926 maybe_small = FALSE; | |
| 927 lnum_found = curwin->w_cursor.lnum; | |
| 928 level = 0; | |
| 929 last = FALSE; | |
| 930 for (;;) | |
| 931 { | |
| 932 if (!foldFind(gap, curwin->w_cursor.lnum - lnum_off, &fp)) | |
| 933 { | |
| 934 if (!updown) | |
| 935 break; | |
| 936 | |
| 937 /* When moving up, consider a fold above the cursor; when | |
| 938 * moving down consider a fold below the cursor. */ | |
| 939 if (dir == FORWARD) | |
| 940 { | |
| 941 if (fp - (fold_T *)gap->ga_data >= gap->ga_len) | |
| 942 break; | |
| 943 --fp; | |
| 944 } | |
| 945 else | |
| 946 { | |
| 947 if (fp == (fold_T *)gap->ga_data) | |
| 948 break; | |
| 949 } | |
| 950 /* don't look for contained folds, they will always move | |
| 951 * the cursor too far. */ | |
| 952 last = TRUE; | |
| 953 } | |
| 954 | |
| 955 if (!last) | |
| 956 { | |
| 957 /* Check if this fold is closed. */ | |
| 958 if (check_closed(curwin, fp, &use_level, level, | |
| 959 &maybe_small, lnum_off)) | |
| 960 last = TRUE; | |
| 961 | |
| 962 /* "[z" and "]z" stop at closed fold */ | |
| 963 if (last && !updown) | |
| 964 break; | |
| 965 } | |
| 966 | |
| 967 if (updown) | |
| 968 { | |
| 969 if (dir == FORWARD) | |
| 970 { | |
| 971 /* to start of next fold if there is one */ | |
| 972 if (fp + 1 - (fold_T *)gap->ga_data < gap->ga_len) | |
| 973 { | |
| 974 lnum = fp[1].fd_top + lnum_off; | |
| 975 if (lnum > curwin->w_cursor.lnum) | |
| 976 lnum_found = lnum; | |
| 977 } | |
| 978 } | |
| 979 else | |
| 980 { | |
| 981 /* to end of previous fold if there is one */ | |
| 982 if (fp > (fold_T *)gap->ga_data) | |
| 983 { | |
| 984 lnum = fp[-1].fd_top + lnum_off + fp[-1].fd_len - 1; | |
| 985 if (lnum < curwin->w_cursor.lnum) | |
| 986 lnum_found = lnum; | |
| 987 } | |
| 988 } | |
| 989 } | |
| 990 else | |
| 991 { | |
| 992 /* Open fold found, set cursor to its start/end and then check | |
| 993 * nested folds. */ | |
| 994 if (dir == FORWARD) | |
| 995 { | |
| 996 lnum = fp->fd_top + lnum_off + fp->fd_len - 1; | |
| 997 if (lnum > curwin->w_cursor.lnum) | |
| 998 lnum_found = lnum; | |
| 999 } | |
| 1000 else | |
| 1001 { | |
| 1002 lnum = fp->fd_top + lnum_off; | |
| 1003 if (lnum < curwin->w_cursor.lnum) | |
| 1004 lnum_found = lnum; | |
| 1005 } | |
| 1006 } | |
| 1007 | |
| 1008 if (last) | |
| 1009 break; | |
| 1010 | |
| 1011 /* Check nested folds (if any). */ | |
| 1012 gap = &fp->fd_nested; | |
| 1013 lnum_off += fp->fd_top; | |
| 1014 ++level; | |
| 1015 } | |
| 1016 if (lnum_found != curwin->w_cursor.lnum) | |
| 1017 { | |
| 1018 if (retval == FAIL) | |
| 1019 setpcmark(); | |
| 1020 curwin->w_cursor.lnum = lnum_found; | |
| 1021 curwin->w_cursor.col = 0; | |
| 1022 retval = OK; | |
| 1023 } | |
| 1024 else | |
| 1025 break; | |
| 1026 } | |
| 1027 | |
| 1028 return retval; | |
| 1029 } | |
| 1030 | |
| 1031 /* foldInitWin() {{{2 */ | |
| 1032 /* | |
| 1033 * Init the fold info in a new window. | |
| 1034 */ | |
| 1035 void | |
| 3263 | 1036 foldInitWin(new_win) |
| 1037 win_T *new_win; | |
| 7 | 1038 { |
| 3263 | 1039 ga_init2(&new_win->w_folds, (int)sizeof(fold_T), 10); |
| 7 | 1040 } |
| 1041 | |
| 1042 /* find_wl_entry() {{{2 */ | |
| 1043 /* | |
| 1044 * Find an entry in the win->w_lines[] array for buffer line "lnum". | |
| 1045 * Only valid entries are considered (for entries where wl_valid is FALSE the | |
| 1046 * line number can be wrong). | |
| 1047 * Returns index of entry or -1 if not found. | |
| 1048 */ | |
| 1049 int | |
| 1050 find_wl_entry(win, lnum) | |
| 1051 win_T *win; | |
| 1052 linenr_T lnum; | |
| 1053 { | |
| 1054 int i; | |
| 1055 | |
|
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1056 for (i = 0; i < win->w_lines_valid; ++i) |
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1057 if (win->w_lines[i].wl_valid) |
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1058 { |
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1059 if (lnum < win->w_lines[i].wl_lnum) |
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1060 return -1; |
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1061 if (lnum <= win->w_lines[i].wl_lastlnum) |
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1062 return i; |
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1063 } |
| 7 | 1064 return -1; |
| 1065 } | |
| 1066 | |
| 1067 /* foldAdjustVisual() {{{2 */ | |
| 1068 #ifdef FEAT_VISUAL | |
| 1069 /* | |
| 1070 * Adjust the Visual area to include any fold at the start or end completely. | |
| 1071 */ | |
| 1072 void | |
| 1073 foldAdjustVisual() | |
| 1074 { | |
| 1075 pos_T *start, *end; | |
| 1076 char_u *ptr; | |
| 1077 | |
| 1078 if (!VIsual_active || !hasAnyFolding(curwin)) | |
| 1079 return; | |
| 1080 | |
| 1081 if (ltoreq(VIsual, curwin->w_cursor)) | |
| 1082 { | |
| 1083 start = &VIsual; | |
| 1084 end = &curwin->w_cursor; | |
| 1085 } | |
| 1086 else | |
| 1087 { | |
| 1088 start = &curwin->w_cursor; | |
| 1089 end = &VIsual; | |
| 1090 } | |
| 1091 if (hasFolding(start->lnum, &start->lnum, NULL)) | |
| 1092 start->col = 0; | |
| 1093 if (hasFolding(end->lnum, NULL, &end->lnum)) | |
| 1094 { | |
| 1095 ptr = ml_get(end->lnum); | |
| 1096 end->col = (colnr_T)STRLEN(ptr); | |
| 1097 if (end->col > 0 && *p_sel == 'o') | |
| 1098 --end->col; | |
| 1099 #ifdef FEAT_MBYTE | |
| 1100 /* prevent cursor from moving on the trail byte */ | |
| 1101 if (has_mbyte) | |
| 1102 mb_adjust_cursor(); | |
| 1103 #endif | |
| 1104 } | |
| 1105 } | |
| 1106 #endif | |
| 1107 | |
| 1108 /* cursor_foldstart() {{{2 */ | |
| 1109 /* | |
| 1110 * Move the cursor to the first line of a closed fold. | |
| 1111 */ | |
| 1112 void | |
| 1113 foldAdjustCursor() | |
| 1114 { | |
| 1115 (void)hasFolding(curwin->w_cursor.lnum, &curwin->w_cursor.lnum, NULL); | |
| 1116 } | |
| 1117 | |
| 1118 /* Internal functions for "fold_T" {{{1 */ | |
| 1119 /* cloneFoldGrowArray() {{{2 */ | |
| 1120 /* | |
| 1121 * Will "clone" (i.e deep copy) a garray_T of folds. | |
| 1122 * | |
| 1123 * Return FAIL if the operation cannot be completed, otherwise OK. | |
| 1124 */ | |
| 1125 void | |
| 1126 cloneFoldGrowArray(from, to) | |
| 1127 garray_T *from; | |
| 1128 garray_T *to; | |
| 1129 { | |
| 1130 int i; | |
| 1131 fold_T *from_p; | |
| 1132 fold_T *to_p; | |
| 1133 | |
| 1134 ga_init2(to, from->ga_itemsize, from->ga_growsize); | |
| 1135 if (from->ga_len == 0 || ga_grow(to, from->ga_len) == FAIL) | |
| 1136 return; | |
| 1137 | |
| 1138 from_p = (fold_T *)from->ga_data; | |
| 1139 to_p = (fold_T *)to->ga_data; | |
| 1140 | |
| 1141 for (i = 0; i < from->ga_len; i++) | |
| 1142 { | |
| 1143 to_p->fd_top = from_p->fd_top; | |
| 1144 to_p->fd_len = from_p->fd_len; | |
| 1145 to_p->fd_flags = from_p->fd_flags; | |
| 1146 to_p->fd_small = from_p->fd_small; | |
| 1147 cloneFoldGrowArray(&from_p->fd_nested, &to_p->fd_nested); | |
| 1148 ++to->ga_len; | |
| 1149 ++from_p; | |
| 1150 ++to_p; | |
| 1151 } | |
| 1152 } | |
| 1153 | |
| 1154 /* foldFind() {{{2 */ | |
| 1155 /* | |
| 1156 * Search for line "lnum" in folds of growarray "gap". | |
| 1157 * Set *fpp to the fold struct for the fold that contains "lnum" or | |
| 1158 * the first fold below it (careful: it can be beyond the end of the array!). | |
| 1159 * Returns FALSE when there is no fold that contains "lnum". | |
| 1160 */ | |
| 1161 static int | |
| 1162 foldFind(gap, lnum, fpp) | |
| 1163 garray_T *gap; | |
| 1164 linenr_T lnum; | |
| 1165 fold_T **fpp; | |
| 1166 { | |
| 1167 linenr_T low, high; | |
| 1168 fold_T *fp; | |
| 1169 int i; | |
| 1170 | |
| 1171 /* | |
| 1172 * Perform a binary search. | |
| 1173 * "low" is lowest index of possible match. | |
| 1174 * "high" is highest index of possible match. | |
| 1175 */ | |
| 1176 fp = (fold_T *)gap->ga_data; | |
| 1177 low = 0; | |
| 1178 high = gap->ga_len - 1; | |
| 1179 while (low <= high) | |
| 1180 { | |
| 1181 i = (low + high) / 2; | |
| 1182 if (fp[i].fd_top > lnum) | |
| 1183 /* fold below lnum, adjust high */ | |
| 1184 high = i - 1; | |
| 1185 else if (fp[i].fd_top + fp[i].fd_len <= lnum) | |
| 1186 /* fold above lnum, adjust low */ | |
| 1187 low = i + 1; | |
| 1188 else | |
| 1189 { | |
| 1190 /* lnum is inside this fold */ | |
| 1191 *fpp = fp + i; | |
| 1192 return TRUE; | |
| 1193 } | |
| 1194 } | |
| 1195 *fpp = fp + low; | |
| 1196 return FALSE; | |
| 1197 } | |
| 1198 | |
| 1199 /* foldLevelWin() {{{2 */ | |
| 1200 /* | |
| 1201 * Return fold level at line number "lnum" in window "wp". | |
| 1202 */ | |
| 1203 static int | |
| 1204 foldLevelWin(wp, lnum) | |
| 1205 win_T *wp; | |
| 1206 linenr_T lnum; | |
| 1207 { | |
| 1208 fold_T *fp; | |
| 1209 linenr_T lnum_rel = lnum; | |
| 1210 int level = 0; | |
| 1211 garray_T *gap; | |
| 1212 | |
| 1213 /* Recursively search for a fold that contains "lnum". */ | |
| 1214 gap = &wp->w_folds; | |
| 1215 for (;;) | |
| 1216 { | |
| 1217 if (!foldFind(gap, lnum_rel, &fp)) | |
| 1218 break; | |
| 1219 /* Check nested folds. Line number is relative to containing fold. */ | |
| 1220 gap = &fp->fd_nested; | |
| 1221 lnum_rel -= fp->fd_top; | |
| 1222 ++level; | |
| 1223 } | |
| 1224 | |
| 1225 return level; | |
| 1226 } | |
| 1227 | |
| 1228 /* checkupdate() {{{2 */ | |
| 1229 /* | |
| 1230 * Check if the folds in window "wp" are invalid and update them if needed. | |
| 1231 */ | |
| 1232 static void | |
| 1233 checkupdate(wp) | |
| 1234 win_T *wp; | |
| 1235 { | |
| 1236 if (wp->w_foldinvalid) | |
| 1237 { | |
| 1238 foldUpdate(wp, (linenr_T)1, (linenr_T)MAXLNUM); /* will update all */ | |
| 1239 wp->w_foldinvalid = FALSE; | |
| 1240 } | |
| 1241 } | |
| 1242 | |
| 1243 /* setFoldRepeat() {{{2 */ | |
| 1244 /* | |
| 1245 * Open or close fold for current window at line "lnum". | |
| 1246 * Repeat "count" times. | |
| 1247 */ | |
| 1248 static void | |
| 1757 | 1249 setFoldRepeat(lnum, count, do_open) |
| 7 | 1250 linenr_T lnum; |
| 1251 long count; | |
| 1757 | 1252 int do_open; |
| 7 | 1253 { |
| 1254 int done; | |
| 1255 long n; | |
| 1256 | |
| 1257 for (n = 0; n < count; ++n) | |
| 1258 { | |
| 1259 done = DONE_NOTHING; | |
| 1757 | 1260 (void)setManualFold(lnum, do_open, FALSE, &done); |
| 7 | 1261 if (!(done & DONE_ACTION)) |
| 1262 { | |
| 1263 /* Only give an error message when no fold could be opened. */ | |
| 1264 if (n == 0 && !(done & DONE_FOLD)) | |
| 1265 EMSG(_(e_nofold)); | |
| 1266 break; | |
| 1267 } | |
| 1268 } | |
| 1269 } | |
| 1270 | |
| 1271 /* setManualFold() {{{2 */ | |
| 1272 /* | |
| 1273 * Open or close the fold in the current window which contains "lnum". | |
| 1274 * Also does this for other windows in diff mode when needed. | |
| 1275 */ | |
| 1276 static linenr_T | |
| 1277 setManualFold(lnum, opening, recurse, donep) | |
| 1278 linenr_T lnum; | |
| 1279 int opening; /* TRUE when opening, FALSE when closing */ | |
| 1280 int recurse; /* TRUE when closing/opening recursive */ | |
| 1281 int *donep; | |
| 1282 { | |
| 1283 #ifdef FEAT_DIFF | |
| 1284 if (foldmethodIsDiff(curwin) && curwin->w_p_scb) | |
| 1285 { | |
| 1286 win_T *wp; | |
| 1287 linenr_T dlnum; | |
| 1288 | |
| 1289 /* | |
| 1290 * Do the same operation in other windows in diff mode. Calculate the | |
| 1291 * line number from the diffs. | |
| 1292 */ | |
| 1293 FOR_ALL_WINDOWS(wp) | |
| 1294 { | |
| 1295 if (wp != curwin && foldmethodIsDiff(wp) && wp->w_p_scb) | |
| 1296 { | |
| 1297 dlnum = diff_lnum_win(curwin->w_cursor.lnum, wp); | |
| 1298 if (dlnum != 0) | |
| 1299 (void)setManualFoldWin(wp, dlnum, opening, recurse, NULL); | |
| 1300 } | |
| 1301 } | |
| 1302 } | |
| 1303 #endif | |
| 1304 | |
| 1305 return setManualFoldWin(curwin, lnum, opening, recurse, donep); | |
| 1306 } | |
| 1307 | |
| 1308 /* setManualFoldWin() {{{2 */ | |
| 1309 /* | |
| 1310 * Open or close the fold in window "wp" which contains "lnum". | |
| 1311 * "donep", when not NULL, points to flag that is set to DONE_FOLD when some | |
| 1312 * fold was found and to DONE_ACTION when some fold was opened or closed. | |
| 1313 * When "donep" is NULL give an error message when no fold was found for | |
| 1314 * "lnum", but only if "wp" is "curwin". | |
| 1315 * Return the line number of the next line that could be closed. | |
| 1316 * It's only valid when "opening" is TRUE! | |
| 1317 */ | |
| 1318 static linenr_T | |
| 1319 setManualFoldWin(wp, lnum, opening, recurse, donep) | |
| 1320 win_T *wp; | |
| 1321 linenr_T lnum; | |
| 1322 int opening; /* TRUE when opening, FALSE when closing */ | |
| 1323 int recurse; /* TRUE when closing/opening recursive */ | |
| 1324 int *donep; | |
| 1325 { | |
| 1326 fold_T *fp; | |
| 1327 fold_T *fp2; | |
| 1328 fold_T *found = NULL; | |
| 1329 int j; | |
| 1330 int level = 0; | |
| 1331 int use_level = FALSE; | |
| 1332 int found_fold = FALSE; | |
| 1333 garray_T *gap; | |
| 1334 linenr_T next = MAXLNUM; | |
| 1335 linenr_T off = 0; | |
| 1336 int done = 0; | |
| 1337 | |
| 1338 checkupdate(wp); | |
| 1339 | |
| 1340 /* | |
| 1341 * Find the fold, open or close it. | |
| 1342 */ | |
| 1343 gap = &wp->w_folds; | |
| 1344 for (;;) | |
| 1345 { | |
| 1346 if (!foldFind(gap, lnum, &fp)) | |
| 1347 { | |
| 1348 /* If there is a following fold, continue there next time. */ | |
| 1349 if (fp < (fold_T *)gap->ga_data + gap->ga_len) | |
| 1350 next = fp->fd_top + off; | |
| 1351 break; | |
| 1352 } | |
| 1353 | |
| 1354 /* lnum is inside this fold */ | |
| 1355 found_fold = TRUE; | |
| 1356 | |
| 1357 /* If there is a following fold, continue there next time. */ | |
| 1358 if (fp + 1 < (fold_T *)gap->ga_data + gap->ga_len) | |
| 1359 next = fp[1].fd_top + off; | |
| 1360 | |
| 1361 /* Change from level-dependent folding to manual. */ | |
| 1362 if (use_level || fp->fd_flags == FD_LEVEL) | |
| 1363 { | |
| 1364 use_level = TRUE; | |
| 1365 if (level >= wp->w_p_fdl) | |
| 1366 fp->fd_flags = FD_CLOSED; | |
| 1367 else | |
| 1368 fp->fd_flags = FD_OPEN; | |
| 1369 fp2 = (fold_T *)fp->fd_nested.ga_data; | |
| 1370 for (j = 0; j < fp->fd_nested.ga_len; ++j) | |
| 1371 fp2[j].fd_flags = FD_LEVEL; | |
| 1372 } | |
| 1373 | |
| 1374 /* Simple case: Close recursively means closing the fold. */ | |
| 1375 if (!opening && recurse) | |
| 1376 { | |
| 1377 if (fp->fd_flags != FD_CLOSED) | |
| 1378 { | |
| 1379 done |= DONE_ACTION; | |
| 1380 fp->fd_flags = FD_CLOSED; | |
| 1381 } | |
| 1382 } | |
| 1383 else if (fp->fd_flags == FD_CLOSED) | |
| 1384 { | |
| 1385 /* When opening, open topmost closed fold. */ | |
| 1386 if (opening) | |
| 1387 { | |
| 1388 fp->fd_flags = FD_OPEN; | |
| 1389 done |= DONE_ACTION; | |
| 1390 if (recurse) | |
| 1391 foldOpenNested(fp); | |
| 1392 } | |
| 1393 break; | |
| 1394 } | |
| 1395 | |
| 1396 /* fold is open, check nested folds */ | |
| 1397 found = fp; | |
| 1398 gap = &fp->fd_nested; | |
| 1399 lnum -= fp->fd_top; | |
| 1400 off += fp->fd_top; | |
| 1401 ++level; | |
| 1402 } | |
| 1403 if (found_fold) | |
| 1404 { | |
| 1405 /* When closing and not recurse, close deepest open fold. */ | |
| 1406 if (!opening && found != NULL) | |
| 1407 { | |
| 1408 found->fd_flags = FD_CLOSED; | |
| 1409 done |= DONE_ACTION; | |
| 1410 } | |
| 1411 wp->w_fold_manual = TRUE; | |
| 1412 if (done & DONE_ACTION) | |
| 1413 changed_window_setting_win(wp); | |
| 1414 done |= DONE_FOLD; | |
| 1415 } | |
| 1416 else if (donep == NULL && wp == curwin) | |
| 1417 EMSG(_(e_nofold)); | |
| 1418 | |
| 1419 if (donep != NULL) | |
| 1420 *donep |= done; | |
| 1421 | |
| 1422 return next; | |
| 1423 } | |
| 1424 | |
| 1425 /* foldOpenNested() {{{2 */ | |
| 1426 /* | |
| 1427 * Open all nested folds in fold "fpr" recursively. | |
| 1428 */ | |
| 1429 static void | |
| 1430 foldOpenNested(fpr) | |
| 1431 fold_T *fpr; | |
| 1432 { | |
| 1433 int i; | |
| 1434 fold_T *fp; | |
| 1435 | |
| 1436 fp = (fold_T *)fpr->fd_nested.ga_data; | |
| 1437 for (i = 0; i < fpr->fd_nested.ga_len; ++i) | |
| 1438 { | |
| 1439 foldOpenNested(&fp[i]); | |
| 1440 fp[i].fd_flags = FD_OPEN; | |
| 1441 } | |
| 1442 } | |
| 1443 | |
| 1444 /* deleteFoldEntry() {{{2 */ | |
| 1445 /* | |
| 1446 * Delete fold "idx" from growarray "gap". | |
| 1447 * When "recursive" is TRUE also delete all the folds contained in it. | |
| 1448 * When "recursive" is FALSE contained folds are moved one level up. | |
| 1449 */ | |
| 1450 static void | |
| 1451 deleteFoldEntry(gap, idx, recursive) | |
| 1452 garray_T *gap; | |
| 1453 int idx; | |
| 1454 int recursive; | |
| 1455 { | |
| 1456 fold_T *fp; | |
| 1457 int i; | |
| 1458 long moved; | |
| 1459 fold_T *nfp; | |
| 1460 | |
| 1461 fp = (fold_T *)gap->ga_data + idx; | |
| 1462 if (recursive || fp->fd_nested.ga_len == 0) | |
| 1463 { | |
| 1464 /* recursively delete the contained folds */ | |
| 1465 deleteFoldRecurse(&fp->fd_nested); | |
| 1466 --gap->ga_len; | |
| 1467 if (idx < gap->ga_len) | |
| 1468 mch_memmove(fp, fp + 1, sizeof(fold_T) * (gap->ga_len - idx)); | |
| 1469 } | |
| 1470 else | |
| 1471 { | |
| 3028 | 1472 /* Move nested folds one level up, to overwrite the fold that is |
| 7 | 1473 * deleted. */ |
| 1474 moved = fp->fd_nested.ga_len; | |
| 1475 if (ga_grow(gap, (int)(moved - 1)) == OK) | |
| 1476 { | |
| 3028 | 1477 /* Get "fp" again, the array may have been reallocated. */ |
| 1478 fp = (fold_T *)gap->ga_data + idx; | |
| 1479 | |
| 7 | 1480 /* adjust fd_top and fd_flags for the moved folds */ |
| 1481 nfp = (fold_T *)fp->fd_nested.ga_data; | |
| 1482 for (i = 0; i < moved; ++i) | |
| 1483 { | |
| 1484 nfp[i].fd_top += fp->fd_top; | |
| 1485 if (fp->fd_flags == FD_LEVEL) | |
| 1486 nfp[i].fd_flags = FD_LEVEL; | |
| 1487 if (fp->fd_small == MAYBE) | |
| 1488 nfp[i].fd_small = MAYBE; | |
| 1489 } | |
| 1490 | |
| 1491 /* move the existing folds down to make room */ | |
| 3028 | 1492 if (idx + 1 < gap->ga_len) |
| 7 | 1493 mch_memmove(fp + moved, fp + 1, |
| 3028 | 1494 sizeof(fold_T) * (gap->ga_len - (idx + 1))); |
| 7 | 1495 /* move the contained folds one level up */ |
| 1496 mch_memmove(fp, nfp, (size_t)(sizeof(fold_T) * moved)); | |
| 1497 vim_free(nfp); | |
| 1498 gap->ga_len += moved - 1; | |
| 1499 } | |
| 1500 } | |
| 1501 } | |
| 1502 | |
| 1503 /* deleteFoldRecurse() {{{2 */ | |
| 1504 /* | |
| 1505 * Delete nested folds in a fold. | |
| 1506 */ | |
| 1507 void | |
| 1508 deleteFoldRecurse(gap) | |
| 1509 garray_T *gap; | |
| 1510 { | |
| 1511 int i; | |
| 1512 | |
| 1513 for (i = 0; i < gap->ga_len; ++i) | |
| 1514 deleteFoldRecurse(&(((fold_T *)(gap->ga_data))[i].fd_nested)); | |
| 1515 ga_clear(gap); | |
| 1516 } | |
| 1517 | |
| 1518 /* foldMarkAdjust() {{{2 */ | |
| 1519 /* | |
| 1520 * Update line numbers of folds for inserted/deleted lines. | |
| 1521 */ | |
| 1522 void | |
| 1523 foldMarkAdjust(wp, line1, line2, amount, amount_after) | |
| 1524 win_T *wp; | |
| 1525 linenr_T line1; | |
| 1526 linenr_T line2; | |
| 1527 long amount; | |
| 1528 long amount_after; | |
| 1529 { | |
| 1530 /* If deleting marks from line1 to line2, but not deleting all those | |
| 1531 * lines, set line2 so that only deleted lines have their folds removed. */ | |
| 1532 if (amount == MAXLNUM && line2 >= line1 && line2 - line1 >= -amount_after) | |
| 1533 line2 = line1 - amount_after - 1; | |
| 1534 /* If appending a line in Insert mode, it should be included in the fold | |
| 1535 * just above the line. */ | |
| 1536 if ((State & INSERT) && amount == (linenr_T)1 && line2 == MAXLNUM) | |
| 1537 --line1; | |
| 1538 foldMarkAdjustRecurse(&wp->w_folds, line1, line2, amount, amount_after); | |
| 1539 } | |
| 1540 | |
| 1541 /* foldMarkAdjustRecurse() {{{2 */ | |
| 1542 static void | |
| 1543 foldMarkAdjustRecurse(gap, line1, line2, amount, amount_after) | |
| 1544 garray_T *gap; | |
| 1545 linenr_T line1; | |
| 1546 linenr_T line2; | |
| 1547 long amount; | |
| 1548 long amount_after; | |
| 1549 { | |
| 1550 fold_T *fp; | |
| 1551 int i; | |
| 1552 linenr_T last; | |
| 1553 linenr_T top; | |
| 1554 | |
| 1555 /* In Insert mode an inserted line at the top of a fold is considered part | |
| 1556 * of the fold, otherwise it isn't. */ | |
| 1557 if ((State & INSERT) && amount == (linenr_T)1 && line2 == MAXLNUM) | |
| 1558 top = line1 + 1; | |
| 1559 else | |
| 1560 top = line1; | |
| 1561 | |
| 1562 /* Find the fold containing or just below "line1". */ | |
| 1563 (void)foldFind(gap, line1, &fp); | |
| 1564 | |
| 1565 /* | |
| 1566 * Adjust all folds below "line1" that are affected. | |
| 1567 */ | |
| 1568 for (i = (int)(fp - (fold_T *)gap->ga_data); i < gap->ga_len; ++i, ++fp) | |
| 1569 { | |
| 1570 /* | |
| 1571 * Check for these situations: | |
| 1572 * 1 2 3 | |
| 1573 * 1 2 3 | |
| 1574 * line1 2 3 4 5 | |
| 1575 * 2 3 4 5 | |
| 1576 * 2 3 4 5 | |
| 1577 * line2 2 3 4 5 | |
| 1578 * 3 5 6 | |
| 1579 * 3 5 6 | |
| 1580 */ | |
| 1581 | |
| 1582 last = fp->fd_top + fp->fd_len - 1; /* last line of fold */ | |
| 1583 | |
| 1584 /* 1. fold completely above line1: nothing to do */ | |
| 1585 if (last < line1) | |
| 1586 continue; | |
| 1587 | |
| 1588 /* 6. fold below line2: only adjust for amount_after */ | |
| 1589 if (fp->fd_top > line2) | |
| 1590 { | |
| 1591 if (amount_after == 0) | |
| 1592 break; | |
| 1593 fp->fd_top += amount_after; | |
| 1594 } | |
| 1595 else | |
| 1596 { | |
| 1597 if (fp->fd_top >= top && last <= line2) | |
| 1598 { | |
| 1599 /* 4. fold completely contained in range */ | |
| 1600 if (amount == MAXLNUM) | |
| 1601 { | |
| 1602 /* Deleting lines: delete the fold completely */ | |
| 1603 deleteFoldEntry(gap, i, TRUE); | |
| 1604 --i; /* adjust index for deletion */ | |
| 1605 --fp; | |
| 1606 } | |
| 1607 else | |
| 1608 fp->fd_top += amount; | |
| 1609 } | |
| 1610 else | |
| 1611 { | |
| 1612 if (fp->fd_top < top) | |
| 1613 { | |
| 1964 | 1614 /* 2 or 3: need to correct nested folds too */ |
| 1615 foldMarkAdjustRecurse(&fp->fd_nested, line1 - fp->fd_top, | |
| 1616 line2 - fp->fd_top, amount, amount_after); | |
| 7 | 1617 if (last <= line2) |
| 1618 { | |
| 1619 /* 2. fold contains line1, line2 is below fold */ | |
| 1620 if (amount == MAXLNUM) | |
| 1621 fp->fd_len = line1 - fp->fd_top; | |
| 1622 else | |
| 1623 fp->fd_len += amount; | |
| 1624 } | |
| 1625 else | |
| 1626 { | |
| 1627 /* 3. fold contains line1 and line2 */ | |
| 1628 fp->fd_len += amount_after; | |
| 1629 } | |
| 1630 } | |
| 1631 else | |
| 1632 { | |
| 1964 | 1633 /* 5. fold is below line1 and contains line2; need to |
| 1634 * correct nested folds too */ | |
| 1635 foldMarkAdjustRecurse(&fp->fd_nested, line1 - fp->fd_top, | |
| 1636 line2 - fp->fd_top, amount, | |
| 1637 amount_after + (fp->fd_top - top)); | |
| 7 | 1638 if (amount == MAXLNUM) |
| 1639 { | |
| 1640 fp->fd_len -= line2 - fp->fd_top + 1; | |
| 1641 fp->fd_top = line1; | |
| 1642 } | |
| 1643 else | |
| 1644 { | |
| 1645 fp->fd_len += amount_after - amount; | |
| 1646 fp->fd_top += amount; | |
| 1647 } | |
| 1648 } | |
| 1649 } | |
| 1650 } | |
| 1651 } | |
| 1652 } | |
| 1653 | |
| 1654 /* getDeepestNesting() {{{2 */ | |
| 1655 /* | |
| 1656 * Get the lowest 'foldlevel' value that makes the deepest nested fold in the | |
| 1657 * current window open. | |
| 1658 */ | |
| 1659 int | |
| 1660 getDeepestNesting() | |
| 1661 { | |
| 1662 checkupdate(curwin); | |
| 1663 return getDeepestNestingRecurse(&curwin->w_folds); | |
| 1664 } | |
| 1665 | |
| 1666 static int | |
| 1667 getDeepestNestingRecurse(gap) | |
| 1668 garray_T *gap; | |
| 1669 { | |
| 1670 int i; | |
| 1671 int level; | |
| 1672 int maxlevel = 0; | |
| 1673 fold_T *fp; | |
| 1674 | |
| 1675 fp = (fold_T *)gap->ga_data; | |
| 1676 for (i = 0; i < gap->ga_len; ++i) | |
| 1677 { | |
| 1678 level = getDeepestNestingRecurse(&fp[i].fd_nested) + 1; | |
| 1679 if (level > maxlevel) | |
| 1680 maxlevel = level; | |
| 1681 } | |
| 1682 | |
| 1683 return maxlevel; | |
| 1684 } | |
| 1685 | |
| 1686 /* check_closed() {{{2 */ | |
| 1687 /* | |
| 1688 * Check if a fold is closed and update the info needed to check nested folds. | |
| 1689 */ | |
| 1690 static int | |
| 1691 check_closed(win, fp, use_levelp, level, maybe_smallp, lnum_off) | |
| 1692 win_T *win; | |
| 1693 fold_T *fp; | |
| 1694 int *use_levelp; /* TRUE: outer fold had FD_LEVEL */ | |
| 1695 int level; /* folding depth */ | |
| 1696 int *maybe_smallp; /* TRUE: outer this had fd_small == MAYBE */ | |
| 1697 linenr_T lnum_off; /* line number offset for fp->fd_top */ | |
| 1698 { | |
| 1699 int closed = FALSE; | |
| 1700 | |
| 1701 /* Check if this fold is closed. If the flag is FD_LEVEL this | |
| 1702 * fold and all folds it contains depend on 'foldlevel'. */ | |
| 1703 if (*use_levelp || fp->fd_flags == FD_LEVEL) | |
| 1704 { | |
| 1705 *use_levelp = TRUE; | |
| 1706 if (level >= win->w_p_fdl) | |
| 1707 closed = TRUE; | |
| 1708 } | |
| 1709 else if (fp->fd_flags == FD_CLOSED) | |
| 1710 closed = TRUE; | |
| 1711 | |
| 1712 /* Small fold isn't closed anyway. */ | |
| 1713 if (fp->fd_small == MAYBE) | |
| 1714 *maybe_smallp = TRUE; | |
| 1715 if (closed) | |
| 1716 { | |
| 1717 if (*maybe_smallp) | |
| 1718 fp->fd_small = MAYBE; | |
| 1719 checkSmall(win, fp, lnum_off); | |
| 1720 if (fp->fd_small == TRUE) | |
| 1721 closed = FALSE; | |
| 1722 } | |
| 1723 return closed; | |
| 1724 } | |
| 1725 | |
| 1726 /* checkSmall() {{{2 */ | |
| 1727 /* | |
| 1728 * Update fd_small field of fold "fp". | |
| 1729 */ | |
| 1730 static void | |
| 1731 checkSmall(wp, fp, lnum_off) | |
| 1732 win_T *wp; | |
| 1733 fold_T *fp; | |
| 1734 linenr_T lnum_off; /* offset for fp->fd_top */ | |
| 1735 { | |
| 1736 int count; | |
| 1737 int n; | |
| 1738 | |
| 1739 if (fp->fd_small == MAYBE) | |
| 1740 { | |
| 1741 /* Mark any nested folds to maybe-small */ | |
| 1742 setSmallMaybe(&fp->fd_nested); | |
| 1743 | |
| 1744 if (fp->fd_len > curwin->w_p_fml) | |
| 1745 fp->fd_small = FALSE; | |
| 1746 else | |
| 1747 { | |
| 1748 count = 0; | |
| 1749 for (n = 0; n < fp->fd_len; ++n) | |
| 1750 { | |
| 1751 count += plines_win_nofold(wp, fp->fd_top + lnum_off + n); | |
| 1752 if (count > curwin->w_p_fml) | |
| 1753 { | |
| 1754 fp->fd_small = FALSE; | |
| 1755 return; | |
| 1756 } | |
| 1757 } | |
| 1758 fp->fd_small = TRUE; | |
| 1759 } | |
| 1760 } | |
| 1761 } | |
| 1762 | |
| 1763 /* setSmallMaybe() {{{2 */ | |
| 1764 /* | |
| 1765 * Set small flags in "gap" to MAYBE. | |
| 1766 */ | |
| 1767 static void | |
| 1768 setSmallMaybe(gap) | |
| 1769 garray_T *gap; | |
| 1770 { | |
| 1771 int i; | |
| 1772 fold_T *fp; | |
| 1773 | |
| 1774 fp = (fold_T *)gap->ga_data; | |
| 1775 for (i = 0; i < gap->ga_len; ++i) | |
| 1776 fp[i].fd_small = MAYBE; | |
| 1777 } | |
| 1778 | |
| 1779 /* foldCreateMarkers() {{{2 */ | |
| 1780 /* | |
| 1781 * Create a fold from line "start" to line "end" (inclusive) in the current | |
| 1782 * window by adding markers. | |
| 1783 */ | |
| 1784 static void | |
| 1785 foldCreateMarkers(start, end) | |
| 1786 linenr_T start; | |
| 1787 linenr_T end; | |
| 1788 { | |
| 1789 if (!curbuf->b_p_ma) | |
| 1790 { | |
| 1791 EMSG(_(e_modifiable)); | |
| 1792 return; | |
| 1793 } | |
| 1794 parseMarker(curwin); | |
| 1795 | |
| 1796 foldAddMarker(start, curwin->w_p_fmr, foldstartmarkerlen); | |
| 1797 foldAddMarker(end, foldendmarker, foldendmarkerlen); | |
| 1798 | |
| 1799 /* Update both changes here, to avoid all folds after the start are | |
| 1800 * changed when the start marker is inserted and the end isn't. */ | |
| 1801 changed_lines(start, (colnr_T)0, end, 0L); | |
| 1802 } | |
| 1803 | |
| 1804 /* foldAddMarker() {{{2 */ | |
| 1805 /* | |
| 1806 * Add "marker[markerlen]" in 'commentstring' to line "lnum". | |
| 1807 */ | |
| 1808 static void | |
| 1809 foldAddMarker(lnum, marker, markerlen) | |
| 1810 linenr_T lnum; | |
| 1811 char_u *marker; | |
| 1812 int markerlen; | |
| 1813 { | |
| 1814 char_u *cms = curbuf->b_p_cms; | |
| 1815 char_u *line; | |
| 1816 int line_len; | |
| 1817 char_u *newline; | |
| 1818 char_u *p = (char_u *)strstr((char *)curbuf->b_p_cms, "%s"); | |
| 1819 | |
| 1820 /* Allocate a new line: old-line + 'cms'-start + marker + 'cms'-end */ | |
| 1821 line = ml_get(lnum); | |
| 1822 line_len = (int)STRLEN(line); | |
| 1823 | |
| 1824 if (u_save(lnum - 1, lnum + 1) == OK) | |
| 1825 { | |
| 1826 newline = alloc((unsigned)(line_len + markerlen + STRLEN(cms) + 1)); | |
| 1827 if (newline == NULL) | |
| 1828 return; | |
| 1829 STRCPY(newline, line); | |
| 1830 if (p == NULL) | |
| 419 | 1831 vim_strncpy(newline + line_len, marker, markerlen); |
| 7 | 1832 else |
| 1833 { | |
| 1834 STRCPY(newline + line_len, cms); | |
| 1835 STRNCPY(newline + line_len + (p - cms), marker, markerlen); | |
| 1836 STRCPY(newline + line_len + (p - cms) + markerlen, p + 2); | |
| 1837 } | |
| 1838 | |
| 1839 ml_replace(lnum, newline, FALSE); | |
| 1840 } | |
| 1841 } | |
| 1842 | |
| 1843 /* deleteFoldMarkers() {{{2 */ | |
| 1844 /* | |
| 1845 * Delete the markers for a fold, causing it to be deleted. | |
| 1846 */ | |
| 1847 static void | |
| 1848 deleteFoldMarkers(fp, recursive, lnum_off) | |
| 1849 fold_T *fp; | |
| 1850 int recursive; | |
| 1851 linenr_T lnum_off; /* offset for fp->fd_top */ | |
| 1852 { | |
| 1853 int i; | |
| 1854 | |
| 1855 if (recursive) | |
| 1856 for (i = 0; i < fp->fd_nested.ga_len; ++i) | |
| 1857 deleteFoldMarkers((fold_T *)fp->fd_nested.ga_data + i, TRUE, | |
| 1858 lnum_off + fp->fd_top); | |
| 1859 foldDelMarker(fp->fd_top + lnum_off, curwin->w_p_fmr, foldstartmarkerlen); | |
| 1860 foldDelMarker(fp->fd_top + lnum_off + fp->fd_len - 1, | |
| 1861 foldendmarker, foldendmarkerlen); | |
| 1862 } | |
| 1863 | |
| 1864 /* foldDelMarker() {{{2 */ | |
| 1865 /* | |
| 1866 * Delete marker "marker[markerlen]" at the end of line "lnum". | |
| 1867 * Delete 'commentstring' if it matches. | |
| 1868 * If the marker is not found, there is no error message. Could a missing | |
| 1869 * close-marker. | |
| 1870 */ | |
| 1871 static void | |
| 1872 foldDelMarker(lnum, marker, markerlen) | |
| 1873 linenr_T lnum; | |
| 1874 char_u *marker; | |
| 1875 int markerlen; | |
| 1876 { | |
| 1877 char_u *line; | |
| 1878 char_u *newline; | |
| 1879 char_u *p; | |
| 1880 int len; | |
| 1881 char_u *cms = curbuf->b_p_cms; | |
| 1882 char_u *cms2; | |
| 1883 | |
| 1884 line = ml_get(lnum); | |
| 1885 for (p = line; *p != NUL; ++p) | |
| 1886 if (STRNCMP(p, marker, markerlen) == 0) | |
| 1887 { | |
| 1888 /* Found the marker, include a digit if it's there. */ | |
| 1889 len = markerlen; | |
| 1890 if (VIM_ISDIGIT(p[len])) | |
| 1891 ++len; | |
| 1892 if (*cms != NUL) | |
| 1893 { | |
| 1894 /* Also delete 'commentstring' if it matches. */ | |
| 1895 cms2 = (char_u *)strstr((char *)cms, "%s"); | |
| 1896 if (p - line >= cms2 - cms | |
| 1897 && STRNCMP(p - (cms2 - cms), cms, cms2 - cms) == 0 | |
| 1898 && STRNCMP(p + len, cms2 + 2, STRLEN(cms2 + 2)) == 0) | |
| 1899 { | |
| 1900 p -= cms2 - cms; | |
| 1901 len += (int)STRLEN(cms) - 2; | |
| 1902 } | |
| 1903 } | |
| 1904 if (u_save(lnum - 1, lnum + 1) == OK) | |
| 1905 { | |
| 1906 /* Make new line: text-before-marker + text-after-marker */ | |
| 1907 newline = alloc((unsigned)(STRLEN(line) - len + 1)); | |
| 1908 if (newline != NULL) | |
| 1909 { | |
| 1910 STRNCPY(newline, line, p - line); | |
| 1911 STRCPY(newline + (p - line), p + len); | |
| 1912 ml_replace(lnum, newline, FALSE); | |
| 1913 } | |
| 1914 } | |
| 1915 break; | |
| 1916 } | |
| 1917 } | |
| 1918 | |
| 29 | 1919 /* get_foldtext() {{{2 */ |
| 1920 /* | |
| 1921 * Return the text for a closed fold at line "lnum", with last line "lnume". | |
| 1922 * When 'foldtext' isn't set puts the result in "buf[51]". Otherwise the | |
| 1923 * result is in allocated memory. | |
| 1924 */ | |
| 1925 char_u * | |
| 1926 get_foldtext(wp, lnum, lnume, foldinfo, buf) | |
| 1927 win_T *wp; | |
| 1928 linenr_T lnum, lnume; | |
| 1929 foldinfo_T *foldinfo; | |
| 1930 char_u *buf; | |
| 1931 { | |
| 1932 char_u *text = NULL; | |
|
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1933 #ifdef FEAT_EVAL |
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1934 /* an error occurred when evaluating 'fdt' setting */ |
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1935 static int got_fdt_error = FALSE; |
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1936 int save_did_emsg = did_emsg; |
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1937 static win_T *last_wp = NULL; |
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1938 static linenr_T last_lnum = 0; |
| 29 | 1939 |
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1940 if (last_wp != wp || last_wp == NULL |
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1941 || last_lnum > lnum || last_lnum == 0) |
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1942 /* window changed, try evaluating foldtext setting once again */ |
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1943 got_fdt_error = FALSE; |
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1944 |
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1945 if (!got_fdt_error) |
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1946 /* a previous error should not abort evaluating 'foldexpr' */ |
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1947 did_emsg = FALSE; |
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1948 |
| 29 | 1949 if (*wp->w_p_fdt != NUL) |
| 1950 { | |
| 1981 | 1951 char_u dashes[MAX_LEVEL + 2]; |
| 29 | 1952 win_T *save_curwin; |
| 1953 int level; | |
| 1954 char_u *p; | |
| 1955 | |
| 1956 /* Set "v:foldstart" and "v:foldend". */ | |
| 1957 set_vim_var_nr(VV_FOLDSTART, lnum); | |
| 1958 set_vim_var_nr(VV_FOLDEND, lnume); | |
| 1959 | |
| 1960 /* Set "v:folddashes" to a string of "level" dashes. */ | |
| 1961 /* Set "v:foldlevel" to "level". */ | |
| 1962 level = foldinfo->fi_level; | |
| 1981 | 1963 if (level > (int)sizeof(dashes) - 1) |
| 1964 level = (int)sizeof(dashes) - 1; | |
| 29 | 1965 vim_memset(dashes, '-', (size_t)level); |
| 1966 dashes[level] = NUL; | |
| 1967 set_vim_var_string(VV_FOLDDASHES, dashes, -1); | |
| 1968 set_vim_var_nr(VV_FOLDLEVEL, (long)level); | |
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1969 |
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1970 /* skip evaluating foldtext on errors */ |
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1971 if (!got_fdt_error) |
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1972 { |
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1973 save_curwin = curwin; |
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1974 curwin = wp; |
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1975 curbuf = wp->w_buffer; |
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1976 |
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1977 ++emsg_silent; /* handle exceptions, but don't display errors */ |
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1978 text = eval_to_string_safe(wp->w_p_fdt, NULL, |
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1979 was_set_insecurely((char_u *)"foldtext", OPT_LOCAL)); |
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1980 --emsg_silent; |
| 29 | 1981 |
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1982 if (text == NULL || did_emsg) |
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1983 got_fdt_error = TRUE; |
| 29 | 1984 |
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1985 curwin = save_curwin; |
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1986 curbuf = curwin->w_buffer; |
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1987 } |
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1988 last_lnum = lnum; |
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1989 last_wp = wp; |
| 29 | 1990 set_vim_var_string(VV_FOLDDASHES, NULL, -1); |
| 1991 | |
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1992 if (!did_emsg && save_did_emsg) |
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1993 did_emsg = save_did_emsg; |
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1994 |
| 29 | 1995 if (text != NULL) |
| 1996 { | |
| 1997 /* Replace unprintable characters, if there are any. But | |
| 1998 * replace a TAB with a space. */ | |
| 1999 for (p = text; *p != NUL; ++p) | |
| 2000 { | |
| 2001 # ifdef FEAT_MBYTE | |
| 33 | 2002 int len; |
| 2003 | |
| 474 | 2004 if (has_mbyte && (len = (*mb_ptr2len)(p)) > 1) |
| 29 | 2005 { |
| 2006 if (!vim_isprintc((*mb_ptr2char)(p))) | |
| 2007 break; | |
| 2008 p += len - 1; | |
| 2009 } | |
| 2010 else | |
| 2011 # endif | |
| 2012 if (*p == TAB) | |
| 2013 *p = ' '; | |
| 2014 else if (ptr2cells(p) > 1) | |
| 2015 break; | |
| 2016 } | |
| 2017 if (*p != NUL) | |
| 2018 { | |
| 2019 p = transstr(text); | |
| 2020 vim_free(text); | |
| 2021 text = p; | |
| 2022 } | |
| 2023 } | |
| 2024 } | |
| 2025 if (text == NULL) | |
| 2026 #endif | |
| 2027 { | |
| 2028 sprintf((char *)buf, _("+--%3ld lines folded "), | |
| 2029 (long)(lnume - lnum + 1)); | |
| 2030 text = buf; | |
| 2031 } | |
| 2032 return text; | |
| 2033 } | |
| 2034 | |
| 7 | 2035 /* foldtext_cleanup() {{{2 */ |
| 2036 /* | |
| 2037 * Remove 'foldmarker' and 'commentstring' from "str" (in-place). | |
| 2038 */ | |
| 2039 void | |
| 2040 foldtext_cleanup(str) | |
| 2041 char_u *str; | |
| 2042 { | |
| 2043 char_u *cms_start; /* first part or the whole comment */ | |
| 2044 int cms_slen = 0; /* length of cms_start */ | |
| 2045 char_u *cms_end; /* last part of the comment or NULL */ | |
| 2046 int cms_elen = 0; /* length of cms_end */ | |
| 2047 char_u *s; | |
| 45 | 2048 char_u *p; |
| 7 | 2049 int len; |
| 2050 int did1 = FALSE; | |
| 2051 int did2 = FALSE; | |
| 2052 | |
| 2053 /* Ignore leading and trailing white space in 'commentstring'. */ | |
| 2054 cms_start = skipwhite(curbuf->b_p_cms); | |
| 835 | 2055 cms_slen = (int)STRLEN(cms_start); |
| 7 | 2056 while (cms_slen > 0 && vim_iswhite(cms_start[cms_slen - 1])) |
| 2057 --cms_slen; | |
| 2058 | |
| 2059 /* locate "%s" in 'commentstring', use the part before and after it. */ | |
| 2060 cms_end = (char_u *)strstr((char *)cms_start, "%s"); | |
| 2061 if (cms_end != NULL) | |
| 2062 { | |
| 835 | 2063 cms_elen = cms_slen - (int)(cms_end - cms_start); |
| 2064 cms_slen = (int)(cms_end - cms_start); | |
| 7 | 2065 |
| 2066 /* exclude white space before "%s" */ | |
| 2067 while (cms_slen > 0 && vim_iswhite(cms_start[cms_slen - 1])) | |
| 2068 --cms_slen; | |
| 2069 | |
| 2070 /* skip "%s" and white space after it */ | |
| 2071 s = skipwhite(cms_end + 2); | |
| 835 | 2072 cms_elen -= (int)(s - cms_end); |
| 7 | 2073 cms_end = s; |
| 2074 } | |
| 2075 parseMarker(curwin); | |
| 2076 | |
| 2077 for (s = str; *s != NUL; ) | |
| 2078 { | |
| 2079 len = 0; | |
| 2080 if (STRNCMP(s, curwin->w_p_fmr, foldstartmarkerlen) == 0) | |
| 45 | 2081 len = foldstartmarkerlen; |
| 2082 else if (STRNCMP(s, foldendmarker, foldendmarkerlen) == 0) | |
| 2083 len = foldendmarkerlen; | |
| 2084 if (len > 0) | |
| 7 | 2085 { |
| 2086 if (VIM_ISDIGIT(s[len])) | |
| 2087 ++len; | |
| 45 | 2088 |
| 2089 /* May remove 'commentstring' start. Useful when it's a double | |
| 2090 * quote and we already removed a double quote. */ | |
| 2091 for (p = s; p > str && vim_iswhite(p[-1]); --p) | |
| 2092 ; | |
| 2093 if (p >= str + cms_slen | |
| 2094 && STRNCMP(p - cms_slen, cms_start, cms_slen) == 0) | |
| 2095 { | |
| 835 | 2096 len += (int)(s - p) + cms_slen; |
| 45 | 2097 s = p - cms_slen; |
| 2098 } | |
| 7 | 2099 } |
| 2100 else if (cms_end != NULL) | |
| 2101 { | |
| 45 | 2102 if (!did1 && cms_slen > 0 && STRNCMP(s, cms_start, cms_slen) == 0) |
| 7 | 2103 { |
| 2104 len = cms_slen; | |
| 2105 did1 = TRUE; | |
| 2106 } | |
| 45 | 2107 else if (!did2 && cms_elen > 0 |
| 2108 && STRNCMP(s, cms_end, cms_elen) == 0) | |
| 7 | 2109 { |
| 2110 len = cms_elen; | |
| 2111 did2 = TRUE; | |
| 2112 } | |
| 2113 } | |
| 2114 if (len != 0) | |
| 2115 { | |
| 2116 while (vim_iswhite(s[len])) | |
| 2117 ++len; | |
| 1624 | 2118 STRMOVE(s, s + len); |
| 7 | 2119 } |
| 2120 else | |
| 2121 { | |
| 39 | 2122 mb_ptr_adv(s); |
| 7 | 2123 } |
| 2124 } | |
| 2125 } | |
| 2126 | |
| 2127 /* Folding by indent, expr, marker and syntax. {{{1 */ | |
| 2128 /* Define "fline_T", passed to get fold level for a line. {{{2 */ | |
| 2129 typedef struct | |
| 2130 { | |
| 2131 win_T *wp; /* window */ | |
| 2132 linenr_T lnum; /* current line number */ | |
| 2133 linenr_T off; /* offset between lnum and real line number */ | |
| 2134 linenr_T lnum_save; /* line nr used by foldUpdateIEMSRecurse() */ | |
| 2135 int lvl; /* current level (-1 for undefined) */ | |
| 2136 int lvl_next; /* level used for next line */ | |
| 2137 int start; /* number of folds that are forced to start at | |
| 2138 this line. */ | |
| 2139 int end; /* level of fold that is forced to end below | |
| 2140 this line */ | |
| 2141 int had_end; /* level of fold that is forced to end above | |
| 2142 this line (copy of "end" of prev. line) */ | |
| 2143 } fline_T; | |
| 2144 | |
| 2145 /* Flag is set when redrawing is needed. */ | |
| 2146 static int fold_changed; | |
| 2147 | |
| 2148 /* Function declarations. {{{2 */ | |
| 2149 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)); | |
| 2150 static int foldInsert __ARGS((garray_T *gap, int i)); | |
| 2151 static void foldSplit __ARGS((garray_T *gap, int i, linenr_T top, linenr_T bot)); | |
| 2152 static void foldRemove __ARGS((garray_T *gap, linenr_T top, linenr_T bot)); | |
| 2153 static void foldMerge __ARGS((fold_T *fp1, garray_T *gap, fold_T *fp2)); | |
| 2154 static void foldlevelIndent __ARGS((fline_T *flp)); | |
| 2155 #ifdef FEAT_DIFF | |
| 2156 static void foldlevelDiff __ARGS((fline_T *flp)); | |
| 2157 #endif | |
| 2158 static void foldlevelExpr __ARGS((fline_T *flp)); | |
| 2159 static void foldlevelMarker __ARGS((fline_T *flp)); | |
| 2160 static void foldlevelSyntax __ARGS((fline_T *flp)); | |
| 2161 | |
| 2162 /* foldUpdateIEMS() {{{2 */ | |
| 2163 /* | |
| 2164 * Update the folding for window "wp", at least from lines "top" to "bot". | |
| 2165 * Return TRUE if any folds did change. | |
| 2166 */ | |
| 2167 static void | |
| 2168 foldUpdateIEMS(wp, top, bot) | |
| 2169 win_T *wp; | |
| 2170 linenr_T top; | |
| 2171 linenr_T bot; | |
| 2172 { | |
| 2173 linenr_T start; | |
| 2174 linenr_T end; | |
| 2175 fline_T fline; | |
| 2176 void (*getlevel)__ARGS((fline_T *)); | |
| 2177 int level; | |
| 2178 fold_T *fp; | |
| 2179 | |
| 2180 /* Avoid problems when being called recursively. */ | |
| 2181 if (invalid_top != (linenr_T)0) | |
| 2182 return; | |
| 2183 | |
| 2184 if (wp->w_foldinvalid) | |
| 2185 { | |
| 2186 /* Need to update all folds. */ | |
| 2187 top = 1; | |
| 2188 bot = wp->w_buffer->b_ml.ml_line_count; | |
| 2189 wp->w_foldinvalid = FALSE; | |
| 2190 | |
| 2191 /* Mark all folds a maybe-small. */ | |
| 2192 setSmallMaybe(&wp->w_folds); | |
| 2193 } | |
| 2194 | |
| 2195 #ifdef FEAT_DIFF | |
| 2196 /* add the context for "diff" folding */ | |
| 2197 if (foldmethodIsDiff(wp)) | |
| 2198 { | |
| 2199 if (top > diff_context) | |
| 2200 top -= diff_context; | |
| 2201 else | |
| 2202 top = 1; | |
| 2203 bot += diff_context; | |
| 2204 } | |
| 2205 #endif | |
| 2206 | |
| 2207 /* When deleting lines at the end of the buffer "top" can be past the end | |
| 2208 * of the buffer. */ | |
| 2209 if (top > wp->w_buffer->b_ml.ml_line_count) | |
| 2210 top = wp->w_buffer->b_ml.ml_line_count; | |
| 2211 | |
| 2212 fold_changed = FALSE; | |
| 2213 fline.wp = wp; | |
| 2214 fline.off = 0; | |
| 2215 fline.lvl = 0; | |
| 2216 fline.lvl_next = -1; | |
| 2217 fline.start = 0; | |
| 2218 fline.end = MAX_LEVEL + 1; | |
| 2219 fline.had_end = MAX_LEVEL + 1; | |
| 2220 | |
| 2221 invalid_top = top; | |
| 2222 invalid_bot = bot; | |
| 2223 | |
| 2224 if (foldmethodIsMarker(wp)) | |
| 2225 { | |
| 2226 getlevel = foldlevelMarker; | |
| 2227 | |
| 2228 /* Init marker variables to speed up foldlevelMarker(). */ | |
| 2229 parseMarker(wp); | |
| 2230 | |
| 2231 /* Need to get the level of the line above top, it is used if there is | |
| 2232 * no marker at the top. */ | |
| 2233 if (top > 1) | |
| 2234 { | |
| 2235 /* Get the fold level at top - 1. */ | |
| 2236 level = foldLevelWin(wp, top - 1); | |
| 2237 | |
| 2238 /* The fold may end just above the top, check for that. */ | |
| 2239 fline.lnum = top - 1; | |
| 2240 fline.lvl = level; | |
| 2241 getlevel(&fline); | |
| 2242 | |
| 2243 /* If a fold started here, we already had the level, if it stops | |
| 2244 * here, we need to use lvl_next. Could also start and end a fold | |
| 2245 * in the same line. */ | |
| 2246 if (fline.lvl > level) | |
| 2247 fline.lvl = level - (fline.lvl - fline.lvl_next); | |
| 2248 else | |
| 2249 fline.lvl = fline.lvl_next; | |
| 2250 } | |
| 2251 fline.lnum = top; | |
| 2252 getlevel(&fline); | |
| 2253 } | |
| 2254 else | |
| 2255 { | |
| 2256 fline.lnum = top; | |
| 2257 if (foldmethodIsExpr(wp)) | |
| 2258 { | |
| 2259 getlevel = foldlevelExpr; | |
| 2260 /* start one line back, because a "<1" may indicate the end of a | |
| 2261 * fold in the topline */ | |
| 2262 if (top > 1) | |
| 2263 --fline.lnum; | |
| 2264 } | |
| 2265 else if (foldmethodIsSyntax(wp)) | |
| 2266 getlevel = foldlevelSyntax; | |
| 2267 #ifdef FEAT_DIFF | |
| 2268 else if (foldmethodIsDiff(wp)) | |
| 2269 getlevel = foldlevelDiff; | |
| 2270 #endif | |
| 2271 else | |
| 2272 getlevel = foldlevelIndent; | |
| 2273 | |
| 2274 /* Backup to a line for which the fold level is defined. Since it's | |
| 2275 * always defined for line one, we will stop there. */ | |
| 2276 fline.lvl = -1; | |
| 2277 for ( ; !got_int; --fline.lnum) | |
| 2278 { | |
| 2279 /* Reset lvl_next each time, because it will be set to a value for | |
| 2280 * the next line, but we search backwards here. */ | |
| 2281 fline.lvl_next = -1; | |
| 2282 getlevel(&fline); | |
| 2283 if (fline.lvl >= 0) | |
| 2284 break; | |
| 2285 } | |
| 2286 } | |
| 2287 | |
| 1977 | 2288 /* |
| 2289 * If folding is defined by the syntax, it is possible that a change in | |
| 2290 * one line will cause all sub-folds of the current fold to change (e.g., | |
| 2291 * closing a C-style comment can cause folds in the subsequent lines to | |
| 2292 * appear). To take that into account we should adjust the value of "bot" | |
| 2293 * to point to the end of the current fold: | |
| 2294 */ | |
| 2295 if (foldlevelSyntax == getlevel) | |
| 2296 { | |
| 2297 garray_T *gap = &wp->w_folds; | |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2114
diff
changeset
|
2298 fold_T *fpn = NULL; |
| 1977 | 2299 int current_fdl = 0; |
| 2300 linenr_T fold_start_lnum = 0; | |
| 2301 linenr_T lnum_rel = fline.lnum; | |
| 2302 | |
| 2303 while (current_fdl < fline.lvl) | |
| 2304 { | |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2114
diff
changeset
|
2305 if (!foldFind(gap, lnum_rel, &fpn)) |
| 1977 | 2306 break; |
| 2307 ++current_fdl; | |
| 2308 | |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2114
diff
changeset
|
2309 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
|
2310 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
|
2311 lnum_rel -= fpn->fd_top; |
| 1977 | 2312 } |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2114
diff
changeset
|
2313 if (fpn != NULL && current_fdl == fline.lvl) |
| 1977 | 2314 { |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2114
diff
changeset
|
2315 linenr_T fold_end_lnum = fold_start_lnum + fpn->fd_len; |
| 1977 | 2316 |
| 2317 if (fold_end_lnum > bot) | |
| 2318 bot = fold_end_lnum; | |
| 2319 } | |
| 2320 } | |
| 2321 | |
| 7 | 2322 start = fline.lnum; |
| 2323 end = bot; | |
| 2324 /* Do at least one line. */ | |
| 2325 if (start > end && end < wp->w_buffer->b_ml.ml_line_count) | |
| 2326 end = start; | |
| 2327 while (!got_int) | |
| 2328 { | |
| 2329 /* Always stop at the end of the file ("end" can be past the end of | |
| 2330 * the file). */ | |
| 2331 if (fline.lnum > wp->w_buffer->b_ml.ml_line_count) | |
| 2332 break; | |
| 2333 if (fline.lnum > end) | |
| 2334 { | |
| 2335 /* For "marker", "expr" and "syntax" methods: If a change caused | |
| 2336 * a fold to be removed, we need to continue at least until where | |
| 2337 * it ended. */ | |
| 2338 if (getlevel != foldlevelMarker | |
| 2339 && getlevel != foldlevelSyntax | |
| 2340 && getlevel != foldlevelExpr) | |
| 2341 break; | |
| 2342 if ((start <= end | |
| 2343 && foldFind(&wp->w_folds, end, &fp) | |
| 2344 && fp->fd_top + fp->fd_len - 1 > end) | |
| 2345 || (fline.lvl == 0 | |
| 2346 && foldFind(&wp->w_folds, fline.lnum, &fp) | |
| 2347 && fp->fd_top < fline.lnum)) | |
| 2348 end = fp->fd_top + fp->fd_len - 1; | |
| 2349 else if (getlevel == foldlevelSyntax | |
| 2350 && foldLevelWin(wp, fline.lnum) != fline.lvl) | |
| 2351 /* For "syntax" method: Compare the foldlevel that the syntax | |
| 2352 * tells us to the foldlevel from the existing folds. If they | |
| 2353 * don't match continue updating folds. */ | |
| 2354 end = fline.lnum; | |
| 2355 else | |
| 2356 break; | |
| 2357 } | |
| 2358 | |
| 2359 /* A level 1 fold starts at a line with foldlevel > 0. */ | |
| 2360 if (fline.lvl > 0) | |
| 2361 { | |
| 2362 invalid_top = fline.lnum; | |
| 2363 invalid_bot = end; | |
| 2364 end = foldUpdateIEMSRecurse(&wp->w_folds, | |
| 2365 1, start, &fline, getlevel, end, FD_LEVEL); | |
| 2366 start = fline.lnum; | |
| 2367 } | |
| 2368 else | |
| 2369 { | |
| 2370 if (fline.lnum == wp->w_buffer->b_ml.ml_line_count) | |
| 2371 break; | |
| 2372 ++fline.lnum; | |
| 2373 fline.lvl = fline.lvl_next; | |
| 2374 getlevel(&fline); | |
| 2375 } | |
| 2376 } | |
| 2377 | |
| 2378 /* There can't be any folds from start until end now. */ | |
| 2379 foldRemove(&wp->w_folds, start, end); | |
| 2380 | |
| 2381 /* If some fold changed, need to redraw and position cursor. */ | |
| 2382 if (fold_changed && wp->w_p_fen) | |
| 1554 | 2383 changed_window_setting_win(wp); |
| 7 | 2384 |
| 2385 /* If we updated folds past "bot", need to redraw more lines. Don't do | |
| 2386 * this in other situations, the changed lines will be redrawn anyway and | |
| 2387 * this method can cause the whole window to be updated. */ | |
| 2388 if (end != bot) | |
| 2389 { | |
| 2390 if (wp->w_redraw_top == 0 || wp->w_redraw_top > top) | |
| 2391 wp->w_redraw_top = top; | |
| 2392 if (wp->w_redraw_bot < end) | |
| 2393 wp->w_redraw_bot = end; | |
| 2394 } | |
| 2395 | |
| 2396 invalid_top = (linenr_T)0; | |
| 2397 } | |
| 2398 | |
| 2399 /* foldUpdateIEMSRecurse() {{{2 */ | |
| 2400 /* | |
| 2401 * Update a fold that starts at "flp->lnum". At this line there is always a | |
| 2402 * valid foldlevel, and its level >= "level". | |
| 2403 * "flp" is valid for "flp->lnum" when called and it's valid when returning. | |
| 2404 * "flp->lnum" is set to the lnum just below the fold, if it ends before | |
| 2405 * "bot", it's "bot" plus one if the fold continues and it's bigger when using | |
| 2406 * the marker method and a text change made following folds to change. | |
| 2407 * When returning, "flp->lnum_save" is the line number that was used to get | |
| 2408 * the level when the level at "flp->lnum" is invalid. | |
| 2409 * Remove any folds from "startlnum" up to here at this level. | |
| 2410 * Recursively update nested folds. | |
| 2411 * Below line "bot" there are no changes in the text. | |
| 2412 * "flp->lnum", "flp->lnum_save" and "bot" are relative to the start of the | |
| 2413 * outer fold. | |
| 2414 * "flp->off" is the offset to the real line number in the buffer. | |
| 2415 * | |
| 2416 * All this would be a lot simpler if all folds in the range would be deleted | |
| 1698 | 2417 * and then created again. But we would lose all information about the |
| 7 | 2418 * folds, even when making changes that don't affect the folding (e.g. "vj~"). |
| 2419 * | |
| 2420 * Returns bot, which may have been increased for lines that also need to be | |
| 2421 * updated as a result of a detected change in the fold. | |
| 2422 */ | |
| 2423 static linenr_T | |
| 2424 foldUpdateIEMSRecurse(gap, level, startlnum, flp, getlevel, bot, topflags) | |
| 2425 garray_T *gap; | |
| 2426 int level; | |
| 2427 linenr_T startlnum; | |
| 2428 fline_T *flp; | |
| 2429 void (*getlevel)__ARGS((fline_T *)); | |
| 2430 linenr_T bot; | |
| 2431 int topflags; /* flags used by containing fold */ | |
| 2432 { | |
| 2433 linenr_T ll; | |
| 2434 fold_T *fp = NULL; | |
| 2435 fold_T *fp2; | |
| 2436 int lvl = level; | |
| 2437 linenr_T startlnum2 = startlnum; | |
| 2438 linenr_T firstlnum = flp->lnum; /* first lnum we got */ | |
| 2439 int i; | |
| 2440 int finish = FALSE; | |
| 2441 linenr_T linecount = flp->wp->w_buffer->b_ml.ml_line_count - flp->off; | |
| 2442 int concat; | |
| 2443 | |
| 2444 /* | |
| 2445 * If using the marker method, the start line is not the start of a fold | |
| 2446 * at the level we're dealing with and the level is non-zero, we must use | |
| 2447 * the previous fold. But ignore a fold that starts at or below | |
| 2448 * startlnum, it must be deleted. | |
| 2449 */ | |
| 2450 if (getlevel == foldlevelMarker && flp->start <= flp->lvl - level | |
| 2451 && flp->lvl > 0) | |
| 2452 { | |
| 2453 foldFind(gap, startlnum - 1, &fp); | |
| 2454 if (fp >= ((fold_T *)gap->ga_data) + gap->ga_len | |
| 2455 || fp->fd_top >= startlnum) | |
| 2456 fp = NULL; | |
| 2457 } | |
| 2458 | |
| 2459 /* | |
| 2460 * Loop over all lines in this fold, or until "bot" is hit. | |
| 2461 * Handle nested folds inside of this fold. | |
| 2462 * "flp->lnum" is the current line. When finding the end of the fold, it | |
| 2463 * is just below the end of the fold. | |
| 2464 * "*flp" contains the level of the line "flp->lnum" or a following one if | |
| 2465 * there are lines with an invalid fold level. "flp->lnum_save" is the | |
| 2466 * line number that was used to get the fold level (below "flp->lnum" when | |
| 2467 * it has an invalid fold level). When called the fold level is always | |
| 2468 * valid, thus "flp->lnum_save" is equal to "flp->lnum". | |
| 2469 */ | |
| 2470 flp->lnum_save = flp->lnum; | |
| 2471 while (!got_int) | |
| 2472 { | |
| 2473 /* Updating folds can be slow, check for CTRL-C. */ | |
| 2474 line_breakcheck(); | |
| 2475 | |
| 2476 /* Set "lvl" to the level of line "flp->lnum". When flp->start is set | |
| 2477 * and after the first line of the fold, set the level to zero to | |
| 2478 * force the fold to end. Do the same when had_end is set: Previous | |
| 2479 * line was marked as end of a fold. */ | |
| 2480 lvl = flp->lvl; | |
| 2481 if (lvl > MAX_LEVEL) | |
| 2482 lvl = MAX_LEVEL; | |
| 2483 if (flp->lnum > firstlnum | |
| 2484 && (level > lvl - flp->start || level >= flp->had_end)) | |
| 2485 lvl = 0; | |
| 2486 | |
| 2487 if (flp->lnum > bot && !finish && fp != NULL) | |
| 2488 { | |
| 2489 /* For "marker" and "syntax" methods: | |
| 2490 * - If a change caused a nested fold to be removed, we need to | |
| 2491 * delete it and continue at least until where it ended. | |
| 2492 * - If a change caused a nested fold to be created, or this fold | |
| 2493 * to continue below its original end, need to finish this fold. | |
| 2494 */ | |
| 2495 if (getlevel != foldlevelMarker | |
| 2496 && getlevel != foldlevelExpr | |
| 2497 && getlevel != foldlevelSyntax) | |
| 2498 break; | |
| 2499 i = 0; | |
| 2500 fp2 = fp; | |
| 2501 if (lvl >= level) | |
| 2502 { | |
| 2503 /* Compute how deep the folds currently are, if it's deeper | |
| 2504 * than "lvl" then some must be deleted, need to update | |
| 2505 * at least one nested fold. */ | |
| 2506 ll = flp->lnum - fp->fd_top; | |
| 2507 while (foldFind(&fp2->fd_nested, ll, &fp2)) | |
| 2508 { | |
| 2509 ++i; | |
| 2510 ll -= fp2->fd_top; | |
| 2511 } | |
| 2512 } | |
| 2513 if (lvl < level + i) | |
| 2514 { | |
| 2515 foldFind(&fp->fd_nested, flp->lnum - fp->fd_top, &fp2); | |
| 2516 if (fp2 != NULL) | |
| 2517 bot = fp2->fd_top + fp2->fd_len - 1 + fp->fd_top; | |
| 2518 } | |
| 2519 else if (fp->fd_top + fp->fd_len <= flp->lnum && lvl >= level) | |
| 2520 finish = TRUE; | |
| 2521 else | |
| 2522 break; | |
| 2523 } | |
| 2524 | |
| 2525 /* At the start of the first nested fold and at the end of the current | |
| 2526 * fold: check if existing folds at this level, before the current | |
| 2527 * one, need to be deleted or truncated. */ | |
| 2528 if (fp == NULL | |
| 2529 && (lvl != level | |
| 2530 || flp->lnum_save >= bot | |
| 2531 || flp->start != 0 | |
| 2532 || flp->had_end <= MAX_LEVEL | |
| 2533 || flp->lnum == linecount)) | |
| 2534 { | |
| 2535 /* | |
| 2536 * Remove or update folds that have lines between startlnum and | |
| 2537 * firstlnum. | |
| 2538 */ | |
| 2539 while (!got_int) | |
| 2540 { | |
| 2541 /* set concat to 1 if it's allowed to concatenated this fold | |
| 2542 * with a previous one that touches it. */ | |
| 2543 if (flp->start != 0 || flp->had_end <= MAX_LEVEL) | |
| 2544 concat = 0; | |
| 2545 else | |
| 2546 concat = 1; | |
| 2547 | |
| 2548 /* Find an existing fold to re-use. Preferably one that | |
| 2549 * includes startlnum, otherwise one that ends just before | |
| 2550 * startlnum or starts after it. */ | |
| 2551 if (foldFind(gap, startlnum, &fp) | |
| 2552 || (fp < ((fold_T *)gap->ga_data) + gap->ga_len | |
| 2553 && fp->fd_top <= firstlnum) | |
| 2554 || foldFind(gap, firstlnum - concat, &fp) | |
| 2555 || (fp < ((fold_T *)gap->ga_data) + gap->ga_len | |
| 2556 && ((lvl < level && fp->fd_top < flp->lnum) | |
| 2557 || (lvl >= level | |
| 2558 && fp->fd_top <= flp->lnum_save)))) | |
| 2559 { | |
| 2560 if (fp->fd_top + fp->fd_len + concat > firstlnum) | |
| 2561 { | |
| 2562 /* Use existing fold for the new fold. If it starts | |
| 2563 * before where we started looking, extend it. If it | |
| 2564 * starts at another line, update nested folds to keep | |
| 2565 * their position, compensating for the new fd_top. */ | |
| 2566 if (fp->fd_top >= startlnum && fp->fd_top != firstlnum) | |
| 2567 { | |
| 2568 if (fp->fd_top > firstlnum) | |
| 2569 /* like lines are inserted */ | |
| 2570 foldMarkAdjustRecurse(&fp->fd_nested, | |
| 2571 (linenr_T)0, (linenr_T)MAXLNUM, | |
| 2572 (long)(fp->fd_top - firstlnum), 0L); | |
| 2573 else | |
| 2574 /* like lines are deleted */ | |
| 2575 foldMarkAdjustRecurse(&fp->fd_nested, | |
| 2576 (linenr_T)0, | |
| 2577 (long)(firstlnum - fp->fd_top - 1), | |
| 2578 (linenr_T)MAXLNUM, | |
| 2579 (long)(fp->fd_top - firstlnum)); | |
| 2580 fp->fd_len += fp->fd_top - firstlnum; | |
| 2581 fp->fd_top = firstlnum; | |
| 2582 fold_changed = TRUE; | |
| 2583 } | |
| 2584 else if (flp->start != 0 && lvl == level | |
| 2585 && fp->fd_top != firstlnum) | |
| 2586 { | |
| 2587 /* Existing fold that includes startlnum must stop | |
| 2588 * if we find the start of a new fold at the same | |
| 2589 * level. Split it. Delete contained folds at | |
| 2590 * this point to split them too. */ | |
| 2591 foldRemove(&fp->fd_nested, flp->lnum - fp->fd_top, | |
| 2592 flp->lnum - fp->fd_top); | |
| 2593 i = (int)(fp - (fold_T *)gap->ga_data); | |
| 2594 foldSplit(gap, i, flp->lnum, flp->lnum - 1); | |
| 2595 fp = (fold_T *)gap->ga_data + i + 1; | |
| 2596 /* If using the "marker" or "syntax" method, we | |
| 2597 * need to continue until the end of the fold is | |
| 2598 * found. */ | |
| 2599 if (getlevel == foldlevelMarker | |
| 2600 || getlevel == foldlevelExpr | |
| 2601 || getlevel == foldlevelSyntax) | |
| 2602 finish = TRUE; | |
| 2603 } | |
| 2604 break; | |
| 2605 } | |
| 2606 if (fp->fd_top >= startlnum) | |
| 2607 { | |
| 2608 /* A fold that starts at or after startlnum and stops | |
| 2609 * before the new fold must be deleted. Continue | |
| 2610 * looking for the next one. */ | |
| 2611 deleteFoldEntry(gap, | |
| 2612 (int)(fp - (fold_T *)gap->ga_data), TRUE); | |
| 2613 } | |
| 2614 else | |
| 2615 { | |
| 2616 /* A fold has some lines above startlnum, truncate it | |
| 2617 * to stop just above startlnum. */ | |
| 2618 fp->fd_len = startlnum - fp->fd_top; | |
| 2619 foldMarkAdjustRecurse(&fp->fd_nested, | |
| 2620 (linenr_T)fp->fd_len, (linenr_T)MAXLNUM, | |
| 2621 (linenr_T)MAXLNUM, 0L); | |
| 2622 fold_changed = TRUE; | |
| 2623 } | |
| 2624 } | |
| 2625 else | |
| 2626 { | |
| 2627 /* Insert new fold. Careful: ga_data may be NULL and it | |
| 2628 * may change! */ | |
| 2629 i = (int)(fp - (fold_T *)gap->ga_data); | |
| 2630 if (foldInsert(gap, i) != OK) | |
| 2631 return bot; | |
| 2632 fp = (fold_T *)gap->ga_data + i; | |
| 2633 /* The new fold continues until bot, unless we find the | |
| 2634 * end earlier. */ | |
| 2635 fp->fd_top = firstlnum; | |
| 2636 fp->fd_len = bot - firstlnum + 1; | |
| 2637 /* When the containing fold is open, the new fold is open. | |
| 2638 * The new fold is closed if the fold above it is closed. | |
| 2639 * The first fold depends on the containing fold. */ | |
| 2640 if (topflags == FD_OPEN) | |
| 2641 { | |
| 2642 flp->wp->w_fold_manual = TRUE; | |
| 2643 fp->fd_flags = FD_OPEN; | |
| 2644 } | |
| 2645 else if (i <= 0) | |
| 2646 { | |
| 2647 fp->fd_flags = topflags; | |
| 2648 if (topflags != FD_LEVEL) | |
| 2649 flp->wp->w_fold_manual = TRUE; | |
| 2650 } | |
| 2651 else | |
| 2652 fp->fd_flags = (fp - 1)->fd_flags; | |
| 2653 fp->fd_small = MAYBE; | |
| 2654 /* If using the "marker", "expr" or "syntax" method, we | |
| 2655 * need to continue until the end of the fold is found. */ | |
| 2656 if (getlevel == foldlevelMarker | |
| 2657 || getlevel == foldlevelExpr | |
| 2658 || getlevel == foldlevelSyntax) | |
| 2659 finish = TRUE; | |
| 2660 fold_changed = TRUE; | |
| 2661 break; | |
| 2662 } | |
| 2663 } | |
| 2664 } | |
| 2665 | |
| 2666 if (lvl < level || flp->lnum > linecount) | |
| 2667 { | |
| 2668 /* | |
| 2669 * Found a line with a lower foldlevel, this fold ends just above | |
| 2670 * "flp->lnum". | |
| 2671 */ | |
| 2672 break; | |
| 2673 } | |
| 2674 | |
| 2675 /* | |
| 2676 * The fold includes the line "flp->lnum" and "flp->lnum_save". | |
| 840 | 2677 * Check "fp" for safety. |
| 7 | 2678 */ |
| 840 | 2679 if (lvl > level && fp != NULL) |
| 7 | 2680 { |
| 2681 /* | |
| 2682 * There is a nested fold, handle it recursively. | |
| 2683 */ | |
| 2684 /* At least do one line (can happen when finish is TRUE). */ | |
| 2685 if (bot < flp->lnum) | |
| 2686 bot = flp->lnum; | |
| 2687 | |
| 2688 /* Line numbers in the nested fold are relative to the start of | |
| 2689 * this fold. */ | |
| 2690 flp->lnum = flp->lnum_save - fp->fd_top; | |
| 2691 flp->off += fp->fd_top; | |
| 2692 i = (int)(fp - (fold_T *)gap->ga_data); | |
| 2693 bot = foldUpdateIEMSRecurse(&fp->fd_nested, level + 1, | |
| 2694 startlnum2 - fp->fd_top, flp, getlevel, | |
| 2695 bot - fp->fd_top, fp->fd_flags); | |
| 2696 fp = (fold_T *)gap->ga_data + i; | |
| 2697 flp->lnum += fp->fd_top; | |
| 2698 flp->lnum_save += fp->fd_top; | |
| 2699 flp->off -= fp->fd_top; | |
| 2700 bot += fp->fd_top; | |
| 2701 startlnum2 = flp->lnum; | |
| 2702 | |
| 2703 /* This fold may end at the same line, don't incr. flp->lnum. */ | |
| 2704 } | |
| 2705 else | |
| 2706 { | |
| 2707 /* | |
| 2708 * Get the level of the next line, then continue the loop to check | |
| 2709 * if it ends there. | |
| 2710 * Skip over undefined lines, to find the foldlevel after it. | |
| 2711 * For the last line in the file the foldlevel is always valid. | |
| 2712 */ | |
| 2713 flp->lnum = flp->lnum_save; | |
| 2714 ll = flp->lnum + 1; | |
| 2715 while (!got_int) | |
| 2716 { | |
| 2717 /* Make the previous level available to foldlevel(). */ | |
| 2718 prev_lnum = flp->lnum; | |
| 2719 prev_lnum_lvl = flp->lvl; | |
| 2720 | |
| 2721 if (++flp->lnum > linecount) | |
| 2722 break; | |
| 2723 flp->lvl = flp->lvl_next; | |
| 2724 getlevel(flp); | |
| 2725 if (flp->lvl >= 0 || flp->had_end <= MAX_LEVEL) | |
| 2726 break; | |
| 2727 } | |
| 2728 prev_lnum = 0; | |
| 2729 if (flp->lnum > linecount) | |
| 2730 break; | |
| 2731 | |
| 2732 /* leave flp->lnum_save to lnum of the line that was used to get | |
| 2733 * the level, flp->lnum to the lnum of the next line. */ | |
| 2734 flp->lnum_save = flp->lnum; | |
| 2735 flp->lnum = ll; | |
| 2736 } | |
| 2737 } | |
| 2738 | |
| 2739 if (fp == NULL) /* only happens when got_int is set */ | |
| 2740 return bot; | |
| 2741 | |
| 2742 /* | |
| 2743 * Get here when: | |
| 2744 * lvl < level: the folds ends just above "flp->lnum" | |
| 2745 * lvl >= level: fold continues below "bot" | |
| 2746 */ | |
| 2747 | |
| 2748 /* Current fold at least extends until lnum. */ | |
| 2749 if (fp->fd_len < flp->lnum - fp->fd_top) | |
| 2750 { | |
| 2751 fp->fd_len = flp->lnum - fp->fd_top; | |
| 1513 | 2752 fp->fd_small = MAYBE; |
| 7 | 2753 fold_changed = TRUE; |
| 2754 } | |
| 2755 | |
| 2756 /* Delete contained folds from the end of the last one found until where | |
| 2757 * we stopped looking. */ | |
| 2758 foldRemove(&fp->fd_nested, startlnum2 - fp->fd_top, | |
| 2759 flp->lnum - 1 - fp->fd_top); | |
| 2760 | |
| 2761 if (lvl < level) | |
| 2762 { | |
| 2763 /* End of fold found, update the length when it got shorter. */ | |
| 2764 if (fp->fd_len != flp->lnum - fp->fd_top) | |
| 2765 { | |
| 2766 if (fp->fd_top + fp->fd_len > bot + 1) | |
| 2767 { | |
| 1224 | 2768 /* fold continued below bot */ |
| 7 | 2769 if (getlevel == foldlevelMarker |
| 2770 || getlevel == foldlevelExpr | |
| 2771 || getlevel == foldlevelSyntax) | |
| 2772 { | |
| 2773 /* marker method: truncate the fold and make sure the | |
| 2774 * previously included lines are processed again */ | |
| 2775 bot = fp->fd_top + fp->fd_len - 1; | |
| 2776 fp->fd_len = flp->lnum - fp->fd_top; | |
| 2777 } | |
| 2778 else | |
| 2779 { | |
| 2780 /* indent or expr method: split fold to create a new one | |
| 2781 * below bot */ | |
| 2782 i = (int)(fp - (fold_T *)gap->ga_data); | |
| 2783 foldSplit(gap, i, flp->lnum, bot); | |
| 2784 fp = (fold_T *)gap->ga_data + i; | |
| 2785 } | |
| 2786 } | |
| 2787 else | |
| 2788 fp->fd_len = flp->lnum - fp->fd_top; | |
| 2789 fold_changed = TRUE; | |
| 2790 } | |
| 2791 } | |
| 2792 | |
| 2793 /* delete following folds that end before the current line */ | |
| 2794 for (;;) | |
| 2795 { | |
| 2796 fp2 = fp + 1; | |
| 2797 if (fp2 >= (fold_T *)gap->ga_data + gap->ga_len | |
| 2798 || fp2->fd_top > flp->lnum) | |
| 2799 break; | |
| 2800 if (fp2->fd_top + fp2->fd_len > flp->lnum) | |
| 2801 { | |
| 2802 if (fp2->fd_top < flp->lnum) | |
| 2803 { | |
| 2804 /* Make fold that includes lnum start at lnum. */ | |
| 2805 foldMarkAdjustRecurse(&fp2->fd_nested, | |
| 2806 (linenr_T)0, (long)(flp->lnum - fp2->fd_top - 1), | |
| 2807 (linenr_T)MAXLNUM, (long)(fp2->fd_top - flp->lnum)); | |
| 2808 fp2->fd_len -= flp->lnum - fp2->fd_top; | |
| 2809 fp2->fd_top = flp->lnum; | |
| 2810 fold_changed = TRUE; | |
| 2811 } | |
| 2812 | |
| 2813 if (lvl >= level) | |
| 2814 { | |
| 2815 /* merge new fold with existing fold that follows */ | |
| 2816 foldMerge(fp, gap, fp2); | |
| 2817 } | |
| 2818 break; | |
| 2819 } | |
| 2820 fold_changed = TRUE; | |
| 2821 deleteFoldEntry(gap, (int)(fp2 - (fold_T *)gap->ga_data), TRUE); | |
| 2822 } | |
| 2823 | |
| 2824 /* Need to redraw the lines we inspected, which might be further down than | |
| 2825 * was asked for. */ | |
| 2826 if (bot < flp->lnum - 1) | |
| 2827 bot = flp->lnum - 1; | |
| 2828 | |
| 2829 return bot; | |
| 2830 } | |
| 2831 | |
| 2832 /* foldInsert() {{{2 */ | |
| 2833 /* | |
| 2834 * Insert a new fold in "gap" at position "i". | |
| 2835 * Returns OK for success, FAIL for failure. | |
| 2836 */ | |
| 2837 static int | |
| 2838 foldInsert(gap, i) | |
| 2839 garray_T *gap; | |
| 2840 int i; | |
| 2841 { | |
| 2842 fold_T *fp; | |
| 2843 | |
| 2844 if (ga_grow(gap, 1) != OK) | |
| 2845 return FAIL; | |
| 2846 fp = (fold_T *)gap->ga_data + i; | |
| 2847 if (i < gap->ga_len) | |
| 2848 mch_memmove(fp + 1, fp, sizeof(fold_T) * (gap->ga_len - i)); | |
| 2849 ++gap->ga_len; | |
| 2850 ga_init2(&fp->fd_nested, (int)sizeof(fold_T), 10); | |
| 2851 return OK; | |
| 2852 } | |
| 2853 | |
| 2854 /* foldSplit() {{{2 */ | |
| 2855 /* | |
| 2856 * Split the "i"th fold in "gap", which starts before "top" and ends below | |
| 2857 * "bot" in two pieces, one ending above "top" and the other starting below | |
| 2858 * "bot". | |
| 2859 * The caller must first have taken care of any nested folds from "top" to | |
| 2860 * "bot"! | |
| 2861 */ | |
| 2862 static void | |
| 2863 foldSplit(gap, i, top, bot) | |
| 2864 garray_T *gap; | |
| 2865 int i; | |
| 2866 linenr_T top; | |
| 2867 linenr_T bot; | |
| 2868 { | |
| 2869 fold_T *fp; | |
| 2870 fold_T *fp2; | |
| 2871 garray_T *gap1; | |
| 2872 garray_T *gap2; | |
| 2873 int idx; | |
| 2874 int len; | |
| 2875 | |
| 2876 /* The fold continues below bot, need to split it. */ | |
| 2877 if (foldInsert(gap, i + 1) == FAIL) | |
| 2878 return; | |
| 2879 fp = (fold_T *)gap->ga_data + i; | |
| 2880 fp[1].fd_top = bot + 1; | |
| 2881 fp[1].fd_len = fp->fd_len - (fp[1].fd_top - fp->fd_top); | |
| 2882 fp[1].fd_flags = fp->fd_flags; | |
| 1985 | 2883 fp[1].fd_small = MAYBE; |
| 2884 fp->fd_small = MAYBE; | |
| 7 | 2885 |
| 2886 /* Move nested folds below bot to new fold. There can't be | |
| 2887 * any between top and bot, they have been removed by the caller. */ | |
| 2888 gap1 = &fp->fd_nested; | |
| 2889 gap2 = &fp[1].fd_nested; | |
| 2890 (void)(foldFind(gap1, bot + 1 - fp->fd_top, &fp2)); | |
| 2891 len = (int)((fold_T *)gap1->ga_data + gap1->ga_len - fp2); | |
| 2892 if (len > 0 && ga_grow(gap2, len) == OK) | |
| 2893 { | |
| 2894 for (idx = 0; idx < len; ++idx) | |
| 2895 { | |
| 2896 ((fold_T *)gap2->ga_data)[idx] = fp2[idx]; | |
| 2897 ((fold_T *)gap2->ga_data)[idx].fd_top | |
| 2898 -= fp[1].fd_top - fp->fd_top; | |
| 2899 } | |
| 2900 gap2->ga_len = len; | |
| 2901 gap1->ga_len -= len; | |
| 2902 } | |
| 2903 fp->fd_len = top - fp->fd_top; | |
| 2904 fold_changed = TRUE; | |
| 2905 } | |
| 2906 | |
| 2907 /* foldRemove() {{{2 */ | |
| 2908 /* | |
| 2909 * Remove folds within the range "top" to and including "bot". | |
| 2910 * Check for these situations: | |
| 2911 * 1 2 3 | |
| 2912 * 1 2 3 | |
| 2913 * top 2 3 4 5 | |
| 2914 * 2 3 4 5 | |
| 2915 * bot 2 3 4 5 | |
| 2916 * 3 5 6 | |
| 2917 * 3 5 6 | |
| 2918 * | |
| 2919 * 1: not changed | |
| 1224 | 2920 * 2: truncate to stop above "top" |
| 7 | 2921 * 3: split in two parts, one stops above "top", other starts below "bot". |
| 2922 * 4: deleted | |
| 2923 * 5: made to start below "bot". | |
| 2924 * 6: not changed | |
| 2925 */ | |
| 2926 static void | |
| 2927 foldRemove(gap, top, bot) | |
| 2928 garray_T *gap; | |
| 2929 linenr_T top; | |
| 2930 linenr_T bot; | |
| 2931 { | |
| 2932 fold_T *fp = NULL; | |
| 2933 | |
| 2934 if (bot < top) | |
| 2935 return; /* nothing to do */ | |
| 2936 | |
| 2937 for (;;) | |
| 2938 { | |
| 2939 /* Find fold that includes top or a following one. */ | |
| 2940 if (foldFind(gap, top, &fp) && fp->fd_top < top) | |
| 2941 { | |
| 2942 /* 2: or 3: need to delete nested folds */ | |
| 2943 foldRemove(&fp->fd_nested, top - fp->fd_top, bot - fp->fd_top); | |
| 2944 if (fp->fd_top + fp->fd_len > bot + 1) | |
| 2945 { | |
| 2946 /* 3: need to split it. */ | |
| 2947 foldSplit(gap, (int)(fp - (fold_T *)gap->ga_data), top, bot); | |
| 2948 } | |
| 2949 else | |
| 2950 { | |
| 2951 /* 2: truncate fold at "top". */ | |
| 2952 fp->fd_len = top - fp->fd_top; | |
| 2953 } | |
| 2954 fold_changed = TRUE; | |
| 2955 continue; | |
| 2956 } | |
| 2957 if (fp >= (fold_T *)(gap->ga_data) + gap->ga_len | |
| 2958 || fp->fd_top > bot) | |
| 2959 { | |
| 2960 /* 6: Found a fold below bot, can stop looking. */ | |
| 2961 break; | |
| 2962 } | |
| 2963 if (fp->fd_top >= top) | |
| 2964 { | |
| 2965 /* Found an entry below top. */ | |
| 2966 fold_changed = TRUE; | |
| 36 | 2967 if (fp->fd_top + fp->fd_len - 1 > bot) |
| 7 | 2968 { |
| 2969 /* 5: Make fold that includes bot start below bot. */ | |
| 2970 foldMarkAdjustRecurse(&fp->fd_nested, | |
| 2971 (linenr_T)0, (long)(bot - fp->fd_top), | |
| 2972 (linenr_T)MAXLNUM, (long)(fp->fd_top - bot - 1)); | |
| 2973 fp->fd_len -= bot - fp->fd_top + 1; | |
| 2974 fp->fd_top = bot + 1; | |
| 2975 break; | |
| 2976 } | |
| 2977 | |
| 2978 /* 4: Delete completely contained fold. */ | |
| 2979 deleteFoldEntry(gap, (int)(fp - (fold_T *)gap->ga_data), TRUE); | |
| 2980 } | |
| 2981 } | |
| 2982 } | |
| 2983 | |
| 2984 /* foldMerge() {{{2 */ | |
| 2985 /* | |
| 1224 | 2986 * Merge two adjacent folds (and the nested ones in them). |
| 2987 * This only works correctly when the folds are really adjacent! Thus "fp1" | |
| 7 | 2988 * must end just above "fp2". |
| 2989 * The resulting fold is "fp1", nested folds are moved from "fp2" to "fp1". | |
| 2990 * Fold entry "fp2" in "gap" is deleted. | |
| 2991 */ | |
| 2992 static void | |
| 2993 foldMerge(fp1, gap, fp2) | |
| 2994 fold_T *fp1; | |
| 2995 garray_T *gap; | |
| 2996 fold_T *fp2; | |
| 2997 { | |
| 2998 fold_T *fp3; | |
| 2999 fold_T *fp4; | |
| 3000 int idx; | |
| 3001 garray_T *gap1 = &fp1->fd_nested; | |
| 3002 garray_T *gap2 = &fp2->fd_nested; | |
| 3003 | |
| 3004 /* If the last nested fold in fp1 touches the first nested fold in fp2, | |
| 3005 * merge them recursively. */ | |
| 3006 if (foldFind(gap1, fp1->fd_len - 1L, &fp3) && foldFind(gap2, 0L, &fp4)) | |
| 3007 foldMerge(fp3, gap2, fp4); | |
| 3008 | |
| 3009 /* Move nested folds in fp2 to the end of fp1. */ | |
| 3010 if (gap2->ga_len > 0 && ga_grow(gap1, gap2->ga_len) == OK) | |
| 3011 { | |
| 3012 for (idx = 0; idx < gap2->ga_len; ++idx) | |
| 3013 { | |
| 3014 ((fold_T *)gap1->ga_data)[gap1->ga_len] | |
| 3015 = ((fold_T *)gap2->ga_data)[idx]; | |
| 3016 ((fold_T *)gap1->ga_data)[gap1->ga_len].fd_top += fp1->fd_len; | |
| 3017 ++gap1->ga_len; | |
| 3018 } | |
| 3019 gap2->ga_len = 0; | |
| 3020 } | |
| 3021 | |
| 3022 fp1->fd_len += fp2->fd_len; | |
| 3023 deleteFoldEntry(gap, (int)(fp2 - (fold_T *)gap->ga_data), TRUE); | |
| 3024 fold_changed = TRUE; | |
| 3025 } | |
| 3026 | |
| 3027 /* foldlevelIndent() {{{2 */ | |
| 3028 /* | |
| 3029 * Low level function to get the foldlevel for the "indent" method. | |
| 3030 * Doesn't use any caching. | |
| 3031 * Returns a level of -1 if the foldlevel depends on surrounding lines. | |
| 3032 */ | |
| 3033 static void | |
| 3034 foldlevelIndent(flp) | |
| 3035 fline_T *flp; | |
| 3036 { | |
| 3037 char_u *s; | |
| 3038 buf_T *buf; | |
| 3039 linenr_T lnum = flp->lnum + flp->off; | |
| 3040 | |
| 3041 buf = flp->wp->w_buffer; | |
| 3042 s = skipwhite(ml_get_buf(buf, lnum, FALSE)); | |
| 3043 | |
| 3044 /* empty line or lines starting with a character in 'foldignore': level | |
| 3045 * depends on surrounding lines */ | |
| 3046 if (*s == NUL || vim_strchr(flp->wp->w_p_fdi, *s) != NULL) | |
| 3047 { | |
| 3048 /* first and last line can't be undefined, use level 0 */ | |
| 3049 if (lnum == 1 || lnum == buf->b_ml.ml_line_count) | |
| 3050 flp->lvl = 0; | |
| 3051 else | |
| 3052 flp->lvl = -1; | |
| 3053 } | |
| 3054 else | |
| 3740 | 3055 flp->lvl = get_indent_buf(buf, lnum) / get_sw_value(); |
| 7 | 3056 if (flp->lvl > flp->wp->w_p_fdn) |
| 1028 | 3057 { |
| 7 | 3058 flp->lvl = flp->wp->w_p_fdn; |
| 1028 | 3059 if (flp->lvl < 0) |
| 3060 flp->lvl = 0; | |
| 3061 } | |
| 7 | 3062 } |
| 3063 | |
| 3064 /* foldlevelDiff() {{{2 */ | |
| 3065 #ifdef FEAT_DIFF | |
| 3066 /* | |
| 3067 * Low level function to get the foldlevel for the "diff" method. | |
| 3068 * Doesn't use any caching. | |
| 3069 */ | |
| 3070 static void | |
| 3071 foldlevelDiff(flp) | |
| 3072 fline_T *flp; | |
| 3073 { | |
| 3074 if (diff_infold(flp->wp, flp->lnum + flp->off)) | |
| 3075 flp->lvl = 1; | |
| 3076 else | |
| 3077 flp->lvl = 0; | |
| 3078 } | |
| 3079 #endif | |
| 3080 | |
| 3081 /* foldlevelExpr() {{{2 */ | |
| 3082 /* | |
| 3083 * Low level function to get the foldlevel for the "expr" method. | |
| 3084 * Doesn't use any caching. | |
| 3085 * Returns a level of -1 if the foldlevel depends on surrounding lines. | |
| 3086 */ | |
| 3087 static void | |
| 3088 foldlevelExpr(flp) | |
| 3089 fline_T *flp; | |
| 3090 { | |
| 3091 #ifndef FEAT_EVAL | |
| 3092 flp->start = FALSE; | |
| 3093 flp->lvl = 0; | |
| 3094 #else | |
| 3095 win_T *win; | |
| 3096 int n; | |
| 3097 int c; | |
| 3098 linenr_T lnum = flp->lnum + flp->off; | |
| 3099 int save_keytyped; | |
| 3100 | |
| 3101 win = curwin; | |
| 3102 curwin = flp->wp; | |
| 3103 curbuf = flp->wp->w_buffer; | |
| 3104 set_vim_var_nr(VV_LNUM, lnum); | |
| 3105 | |
| 3106 flp->start = 0; | |
| 3107 flp->had_end = flp->end; | |
| 3108 flp->end = MAX_LEVEL + 1; | |
| 3109 if (lnum <= 1) | |
| 3110 flp->lvl = 0; | |
| 3111 | |
| 3112 /* KeyTyped may be reset to 0 when calling a function which invokes | |
| 3113 * do_cmdline(). To make 'foldopen' work correctly restore KeyTyped. */ | |
| 3114 save_keytyped = KeyTyped; | |
| 3115 n = eval_foldexpr(flp->wp->w_p_fde, &c); | |
| 3116 KeyTyped = save_keytyped; | |
| 3117 | |
| 3118 switch (c) | |
| 3119 { | |
| 3120 /* "a1", "a2", .. : add to the fold level */ | |
| 3121 case 'a': if (flp->lvl >= 0) | |
| 3122 { | |
| 3123 flp->lvl += n; | |
| 3124 flp->lvl_next = flp->lvl; | |
| 3125 } | |
| 3126 flp->start = n; | |
| 3127 break; | |
| 3128 | |
| 3129 /* "s1", "s2", .. : subtract from the fold level */ | |
| 3130 case 's': if (flp->lvl >= 0) | |
| 3131 { | |
| 3132 if (n > flp->lvl) | |
| 3133 flp->lvl_next = 0; | |
| 3134 else | |
| 3135 flp->lvl_next = flp->lvl - n; | |
| 3136 flp->end = flp->lvl_next + 1; | |
| 3137 } | |
| 3138 break; | |
| 3139 | |
| 3140 /* ">1", ">2", .. : start a fold with a certain level */ | |
| 3141 case '>': flp->lvl = n; | |
| 3142 flp->lvl_next = n; | |
| 3143 flp->start = 1; | |
| 3144 break; | |
| 3145 | |
| 3146 /* "<1", "<2", .. : end a fold with a certain level */ | |
| 3147 case '<': flp->lvl_next = n - 1; | |
| 3148 flp->end = n; | |
| 3149 break; | |
| 3150 | |
| 3151 /* "=": No change in level */ | |
| 3152 case '=': flp->lvl_next = flp->lvl; | |
| 3153 break; | |
| 3154 | |
| 3155 /* "-1", "0", "1", ..: set fold level */ | |
| 3156 default: if (n < 0) | |
| 3157 /* Use the current level for the next line, so that "a1" | |
| 3158 * will work there. */ | |
| 3159 flp->lvl_next = flp->lvl; | |
| 3160 else | |
| 3161 flp->lvl_next = n; | |
| 3162 flp->lvl = n; | |
| 3163 break; | |
| 3164 } | |
| 3165 | |
| 3166 /* If the level is unknown for the first or the last line in the file, use | |
| 3167 * level 0. */ | |
| 3168 if (flp->lvl < 0) | |
| 3169 { | |
| 3170 if (lnum <= 1) | |
| 3171 { | |
| 3172 flp->lvl = 0; | |
| 3173 flp->lvl_next = 0; | |
| 3174 } | |
| 3175 if (lnum == curbuf->b_ml.ml_line_count) | |
| 3176 flp->lvl_next = 0; | |
| 3177 } | |
| 3178 | |
| 3179 curwin = win; | |
| 3180 curbuf = curwin->w_buffer; | |
| 3181 #endif | |
| 3182 } | |
| 3183 | |
| 3184 /* parseMarker() {{{2 */ | |
| 3185 /* | |
| 3186 * Parse 'foldmarker' and set "foldendmarker", "foldstartmarkerlen" and | |
| 3187 * "foldendmarkerlen". | |
| 3188 * Relies on the option value to have been checked for correctness already. | |
| 3189 */ | |
| 3190 static void | |
| 3191 parseMarker(wp) | |
| 3192 win_T *wp; | |
| 3193 { | |
| 3194 foldendmarker = vim_strchr(wp->w_p_fmr, ','); | |
| 3195 foldstartmarkerlen = (int)(foldendmarker++ - wp->w_p_fmr); | |
| 3196 foldendmarkerlen = (int)STRLEN(foldendmarker); | |
| 3197 } | |
| 3198 | |
| 3199 /* foldlevelMarker() {{{2 */ | |
| 3200 /* | |
| 3201 * Low level function to get the foldlevel for the "marker" method. | |
| 3202 * "foldendmarker", "foldstartmarkerlen" and "foldendmarkerlen" must have been | |
| 3203 * set before calling this. | |
| 3204 * Requires that flp->lvl is set to the fold level of the previous line! | |
| 3205 * Careful: This means you can't call this function twice on the same line. | |
| 3206 * Doesn't use any caching. | |
| 3207 * Sets flp->start when a start marker was found. | |
| 3208 */ | |
| 3209 static void | |
| 3210 foldlevelMarker(flp) | |
| 3211 fline_T *flp; | |
| 3212 { | |
| 3213 char_u *startmarker; | |
| 3214 int cstart; | |
| 3215 int cend; | |
| 3216 int start_lvl = flp->lvl; | |
| 3217 char_u *s; | |
| 3218 int n; | |
| 3219 | |
| 3220 /* cache a few values for speed */ | |
| 3221 startmarker = flp->wp->w_p_fmr; | |
| 3222 cstart = *startmarker; | |
| 3223 ++startmarker; | |
| 3224 cend = *foldendmarker; | |
| 3225 | |
| 3226 /* Default: no start found, next level is same as current level */ | |
| 3227 flp->start = 0; | |
| 3228 flp->lvl_next = flp->lvl; | |
| 3229 | |
| 3230 s = ml_get_buf(flp->wp->w_buffer, flp->lnum + flp->off, FALSE); | |
| 3231 while (*s) | |
| 3232 { | |
| 3233 if (*s == cstart | |
| 3234 && STRNCMP(s + 1, startmarker, foldstartmarkerlen - 1) == 0) | |
| 3235 { | |
| 3236 /* found startmarker: set flp->lvl */ | |
| 3237 s += foldstartmarkerlen; | |
| 3238 if (VIM_ISDIGIT(*s)) | |
| 3239 { | |
| 3240 n = atoi((char *)s); | |
| 3241 if (n > 0) | |
| 3242 { | |
| 3243 flp->lvl = n; | |
| 3244 flp->lvl_next = n; | |
| 3245 if (n <= start_lvl) | |
| 3246 flp->start = 1; | |
| 3247 else | |
| 3248 flp->start = n - start_lvl; | |
| 3249 } | |
| 3250 } | |
| 3251 else | |
| 3252 { | |
| 3253 ++flp->lvl; | |
| 3254 ++flp->lvl_next; | |
| 3255 ++flp->start; | |
| 3256 } | |
| 3257 } | |
| 3258 else if (*s == cend | |
| 3259 && STRNCMP(s + 1, foldendmarker + 1, foldendmarkerlen - 1) == 0) | |
| 3260 { | |
| 3261 /* found endmarker: set flp->lvl_next */ | |
| 3262 s += foldendmarkerlen; | |
| 3263 if (VIM_ISDIGIT(*s)) | |
| 3264 { | |
| 3265 n = atoi((char *)s); | |
| 3266 if (n > 0) | |
| 3267 { | |
| 3268 flp->lvl = n; | |
| 3269 flp->lvl_next = n - 1; | |
| 3270 /* 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
|
3271 if (flp->lvl_next > start_lvl) |
|
79b8d69a4588
updated for version 7.2.340
Bram Moolenaar <bram@zimbu.org>
parents:
1985
diff
changeset
|
3272 flp->lvl_next = start_lvl; |
| 7 | 3273 } |
| 3274 } | |
| 3275 else | |
| 3276 --flp->lvl_next; | |
| 3277 } | |
| 3278 else | |
| 651 | 3279 mb_ptr_adv(s); |
| 7 | 3280 } |
| 3281 | |
| 3282 /* The level can't go negative, must be missing a start marker. */ | |
| 3283 if (flp->lvl_next < 0) | |
| 3284 flp->lvl_next = 0; | |
| 3285 } | |
| 3286 | |
| 3287 /* foldlevelSyntax() {{{2 */ | |
| 3288 /* | |
| 3289 * Low level function to get the foldlevel for the "syntax" method. | |
| 3290 * Doesn't use any caching. | |
| 3291 */ | |
| 3292 static void | |
| 3293 foldlevelSyntax(flp) | |
| 3294 fline_T *flp; | |
| 3295 { | |
| 3296 #ifndef FEAT_SYN_HL | |
| 3297 flp->start = 0; | |
| 3298 flp->lvl = 0; | |
| 3299 #else | |
| 3300 linenr_T lnum = flp->lnum + flp->off; | |
| 3301 int n; | |
| 3302 | |
| 3303 /* Use the maximum fold level at the start of this line and the next. */ | |
| 3304 flp->lvl = syn_get_foldlevel(flp->wp, lnum); | |
| 3305 flp->start = 0; | |
| 3306 if (lnum < flp->wp->w_buffer->b_ml.ml_line_count) | |
| 3307 { | |
| 3308 n = syn_get_foldlevel(flp->wp, lnum + 1); | |
| 3309 if (n > flp->lvl) | |
| 3310 { | |
| 3311 flp->start = n - flp->lvl; /* fold(s) start here */ | |
| 3312 flp->lvl = n; | |
| 3313 } | |
| 3314 } | |
| 3315 #endif | |
| 3316 } | |
| 3317 | |
| 3318 /* functions for storing the fold state in a View {{{1 */ | |
| 3319 /* put_folds() {{{2 */ | |
| 3320 #if defined(FEAT_SESSION) || defined(PROTO) | |
| 3321 static int put_folds_recurse __ARGS((FILE *fd, garray_T *gap, linenr_T off)); | |
| 3392 | 3322 static int put_foldopen_recurse __ARGS((FILE *fd, win_T *wp, garray_T *gap, linenr_T off)); |
| 3323 static int put_fold_open_close __ARGS((FILE *fd, fold_T *fp, linenr_T off)); | |
| 7 | 3324 |
| 3325 /* | |
| 3326 * Write commands to "fd" to restore the manual folds in window "wp". | |
| 3327 * Return FAIL if writing fails. | |
| 3328 */ | |
| 3329 int | |
| 3330 put_folds(fd, wp) | |
| 3331 FILE *fd; | |
| 3332 win_T *wp; | |
| 3333 { | |
| 3334 if (foldmethodIsManual(wp)) | |
| 3335 { | |
| 3336 if (put_line(fd, "silent! normal! zE") == FAIL | |
| 3337 || put_folds_recurse(fd, &wp->w_folds, (linenr_T)0) == FAIL) | |
| 3338 return FAIL; | |
| 3339 } | |
| 3340 | |
| 3341 /* If some folds are manually opened/closed, need to restore that. */ | |
| 3342 if (wp->w_fold_manual) | |
| 3392 | 3343 return put_foldopen_recurse(fd, wp, &wp->w_folds, (linenr_T)0); |
| 7 | 3344 |
| 3345 return OK; | |
| 3346 } | |
| 3347 | |
| 3348 /* put_folds_recurse() {{{2 */ | |
| 3349 /* | |
| 3350 * Write commands to "fd" to recreate manually created folds. | |
| 3351 * Returns FAIL when writing failed. | |
| 3352 */ | |
| 3353 static int | |
| 3354 put_folds_recurse(fd, gap, off) | |
| 3355 FILE *fd; | |
| 3356 garray_T *gap; | |
| 3357 linenr_T off; | |
| 3358 { | |
| 3359 int i; | |
| 3360 fold_T *fp; | |
| 3361 | |
| 3362 fp = (fold_T *)gap->ga_data; | |
| 3363 for (i = 0; i < gap->ga_len; i++) | |
| 3364 { | |
| 3365 /* Do nested folds first, they will be created closed. */ | |
| 3366 if (put_folds_recurse(fd, &fp->fd_nested, off + fp->fd_top) == FAIL) | |
| 3367 return FAIL; | |
| 3368 if (fprintf(fd, "%ld,%ldfold", fp->fd_top + off, | |
| 3369 fp->fd_top + off + fp->fd_len - 1) < 0 | |
| 3370 || put_eol(fd) == FAIL) | |
| 3371 return FAIL; | |
| 3372 ++fp; | |
| 3373 } | |
| 3374 return OK; | |
| 3375 } | |
| 3376 | |
| 3377 /* put_foldopen_recurse() {{{2 */ | |
| 3378 /* | |
| 3379 * Write commands to "fd" to open and close manually opened/closed folds. | |
| 3380 * Returns FAIL when writing failed. | |
| 3381 */ | |
| 3382 static int | |
| 3392 | 3383 put_foldopen_recurse(fd, wp, gap, off) |
| 7 | 3384 FILE *fd; |
| 3392 | 3385 win_T *wp; |
| 7 | 3386 garray_T *gap; |
| 3387 linenr_T off; | |
| 3388 { | |
| 3389 int i; | |
| 3392 | 3390 int level; |
| 7 | 3391 fold_T *fp; |
| 3392 | |
| 3393 fp = (fold_T *)gap->ga_data; | |
| 3394 for (i = 0; i < gap->ga_len; i++) | |
| 3395 { | |
| 3396 if (fp->fd_flags != FD_LEVEL) | |
| 3397 { | |
| 3398 if (fp->fd_nested.ga_len > 0) | |
| 3399 { | |
| 3392 | 3400 /* open nested folds while this fold is open */ |
| 7 | 3401 if (fprintf(fd, "%ld", fp->fd_top + off) < 0 |
| 3402 || put_eol(fd) == FAIL | |
| 3766 | 3403 || put_line(fd, "normal! zo") == FAIL) |
| 7 | 3404 return FAIL; |
| 3392 | 3405 if (put_foldopen_recurse(fd, wp, &fp->fd_nested, |
| 3406 off + fp->fd_top) | |
| 7 | 3407 == FAIL) |
| 3408 return FAIL; | |
| 3392 | 3409 /* close the parent when needed */ |
| 3410 if (fp->fd_flags == FD_CLOSED) | |
| 3411 { | |
| 3412 if (put_fold_open_close(fd, fp, off) == FAIL) | |
| 3413 return FAIL; | |
| 3414 } | |
| 3415 } | |
| 3416 else | |
| 3417 { | |
| 3418 /* Open or close the leaf according to the window foldlevel. | |
| 3419 * Do not close a leaf that is already closed, as it will close | |
| 3420 * the parent. */ | |
| 3421 level = foldLevelWin(wp, off + fp->fd_top); | |
| 3422 if ((fp->fd_flags == FD_CLOSED && wp->w_p_fdl >= level) | |
| 3423 || (fp->fd_flags != FD_CLOSED && wp->w_p_fdl < level)) | |
| 3424 if (put_fold_open_close(fd, fp, off) == FAIL) | |
| 3425 return FAIL; | |
| 7 | 3426 } |
| 3427 } | |
| 3428 ++fp; | |
| 3429 } | |
| 3430 | |
| 3431 return OK; | |
| 3432 } | |
| 3392 | 3433 |
| 3434 /* put_fold_open_close() {{{2 */ | |
| 3435 /* | |
| 3436 * Write the open or close command to "fd". | |
| 3437 * Returns FAIL when writing failed. | |
| 3438 */ | |
| 3439 static int | |
| 3440 put_fold_open_close(fd, fp, off) | |
| 3441 FILE *fd; | |
| 3442 fold_T *fp; | |
| 3443 linenr_T off; | |
| 3444 { | |
| 3445 if (fprintf(fd, "%ld", fp->fd_top + off) < 0 | |
| 3446 || put_eol(fd) == FAIL | |
| 3766 | 3447 || fprintf(fd, "normal! z%c", |
| 3392 | 3448 fp->fd_flags == FD_CLOSED ? 'c' : 'o') < 0 |
| 3449 || put_eol(fd) == FAIL) | |
| 3450 return FAIL; | |
| 3451 | |
| 3452 return OK; | |
| 3453 } | |
| 7 | 3454 #endif /* FEAT_SESSION */ |
| 3455 | |
| 3456 /* }}}1 */ | |
| 3457 #endif /* defined(FEAT_FOLDING) || defined(PROTO) */ |