Mercurial > vim
annotate src/fold.c @ 9566:9ea5a5f6cba2 v7.4.2060
commit https://github.com/vim/vim/commit/a9093fe0946032b1bcaecaad82bfaf6763195aa4
Author: Bram Moolenaar <Bram@vim.org>
Date: Sun Jul 17 19:02:16 2016 +0200
patch 7.4.2060
Problem: Wrong file name.
Solution: Fix typo.
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Sun, 17 Jul 2016 19:15:05 +0200 |
| parents | 32e34e574716 |
| children | a990e7ed260b |
| 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 */ | |
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46 static void newFoldLevelWin(win_T *wp); |
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47 static int checkCloseRec(garray_T *gap, linenr_T lnum, int level); |
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48 static int foldFind(garray_T *gap, linenr_T lnum, fold_T **fpp); |
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49 static int foldLevelWin(win_T *wp, linenr_T lnum); |
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50 static void checkupdate(win_T *wp); |
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51 static void setFoldRepeat(linenr_T lnum, long count, int do_open); |
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52 static linenr_T setManualFold(linenr_T lnum, int opening, int recurse, int *donep); |
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53 static linenr_T setManualFoldWin(win_T *wp, linenr_T lnum, int opening, int recurse, int *donep); |
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54 static void foldOpenNested(fold_T *fpr); |
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55 static void deleteFoldEntry(garray_T *gap, int idx, int recursive); |
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56 static void foldMarkAdjustRecurse(garray_T *gap, linenr_T line1, linenr_T line2, long amount, long amount_after); |
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57 static int getDeepestNestingRecurse(garray_T *gap); |
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58 static int check_closed(win_T *win, fold_T *fp, int *use_levelp, int level, int *maybe_smallp, linenr_T lnum_off); |
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59 static void checkSmall(win_T *wp, fold_T *fp, linenr_T lnum_off); |
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60 static void setSmallMaybe(garray_T *gap); |
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61 static void foldCreateMarkers(linenr_T start, linenr_T end); |
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62 static void foldAddMarker(linenr_T lnum, char_u *marker, int markerlen); |
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63 static void deleteFoldMarkers(fold_T *fp, int recursive, linenr_T lnum_off); |
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64 static void foldDelMarker(linenr_T lnum, char_u *marker, int markerlen); |
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65 static void foldUpdateIEMS(win_T *wp, linenr_T top, linenr_T bot); |
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66 static void parseMarker(win_T *wp); |
| 7 | 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 | |
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103 copyFoldingState(win_T *wp_from, win_T *wp_to) |
| 7 | 104 { |
| 105 wp_to->w_fold_manual = wp_from->w_fold_manual; | |
| 106 wp_to->w_foldinvalid = wp_from->w_foldinvalid; | |
| 107 cloneFoldGrowArray(&wp_from->w_folds, &wp_to->w_folds); | |
| 108 } | |
| 109 #endif | |
| 110 | |
| 111 /* hasAnyFolding() {{{2 */ | |
| 112 /* | |
| 113 * Return TRUE if there may be folded lines in the current window. | |
| 114 */ | |
| 115 int | |
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116 hasAnyFolding(win_T *win) |
| 7 | 117 { |
| 118 /* very simple now, but can become more complex later */ | |
| 119 return (win->w_p_fen | |
| 120 && (!foldmethodIsManual(win) || win->w_folds.ga_len > 0)); | |
| 121 } | |
| 122 | |
| 123 /* hasFolding() {{{2 */ | |
| 124 /* | |
| 125 * Return TRUE if line "lnum" in the current window is part of a closed | |
| 126 * fold. | |
| 127 * When returning TRUE, *firstp and *lastp are set to the first and last | |
| 128 * lnum of the sequence of folded lines (skipped when NULL). | |
| 129 */ | |
| 130 int | |
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131 hasFolding(linenr_T lnum, linenr_T *firstp, linenr_T *lastp) |
| 7 | 132 { |
| 133 return hasFoldingWin(curwin, lnum, firstp, lastp, TRUE, NULL); | |
| 134 } | |
| 135 | |
| 136 /* hasFoldingWin() {{{2 */ | |
| 137 int | |
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138 hasFoldingWin( |
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139 win_T *win, |
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140 linenr_T lnum, |
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141 linenr_T *firstp, |
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142 linenr_T *lastp, |
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143 int cache, /* when TRUE: use cached values of window */ |
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144 foldinfo_T *infop) /* where to store fold info */ |
| 7 | 145 { |
| 146 int had_folded = FALSE; | |
| 147 linenr_T first = 0; | |
| 148 linenr_T last = 0; | |
| 149 linenr_T lnum_rel = lnum; | |
| 150 int x; | |
| 151 fold_T *fp; | |
| 152 int level = 0; | |
| 153 int use_level = FALSE; | |
| 154 int maybe_small = FALSE; | |
| 155 garray_T *gap; | |
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156 int low_level = 0; |
| 7 | 157 |
| 158 checkupdate(win); | |
| 159 /* | |
| 160 * Return quickly when there is no folding at all in this window. | |
| 161 */ | |
| 162 if (!hasAnyFolding(win)) | |
| 163 { | |
| 164 if (infop != NULL) | |
| 165 infop->fi_level = 0; | |
| 166 return FALSE; | |
| 167 } | |
| 168 | |
| 169 if (cache) | |
| 170 { | |
| 171 /* | |
| 172 * First look in cached info for displayed lines. This is probably | |
| 173 * the fastest, but it can only be used if the entry is still valid. | |
| 174 */ | |
| 175 x = find_wl_entry(win, lnum); | |
| 176 if (x >= 0) | |
| 177 { | |
| 178 first = win->w_lines[x].wl_lnum; | |
| 179 last = win->w_lines[x].wl_lastlnum; | |
| 180 had_folded = win->w_lines[x].wl_folded; | |
| 181 } | |
| 182 } | |
| 183 | |
| 184 if (first == 0) | |
| 185 { | |
| 186 /* | |
| 187 * Recursively search for a fold that contains "lnum". | |
| 188 */ | |
| 189 gap = &win->w_folds; | |
| 190 for (;;) | |
| 191 { | |
| 192 if (!foldFind(gap, lnum_rel, &fp)) | |
| 193 break; | |
| 194 | |
| 195 /* Remember lowest level of fold that starts in "lnum". */ | |
| 196 if (lnum_rel == fp->fd_top && low_level == 0) | |
| 197 low_level = level + 1; | |
| 198 | |
| 199 first += fp->fd_top; | |
| 200 last += fp->fd_top; | |
| 201 | |
| 202 /* is this fold closed? */ | |
| 203 had_folded = check_closed(win, fp, &use_level, level, | |
| 204 &maybe_small, lnum - lnum_rel); | |
| 205 if (had_folded) | |
| 206 { | |
| 207 /* Fold closed: Set last and quit loop. */ | |
| 208 last += fp->fd_len - 1; | |
| 209 break; | |
| 210 } | |
| 211 | |
| 212 /* Fold found, but it's open: Check nested folds. Line number is | |
| 213 * relative to containing fold. */ | |
| 214 gap = &fp->fd_nested; | |
| 215 lnum_rel -= fp->fd_top; | |
| 216 ++level; | |
| 217 } | |
| 218 } | |
| 219 | |
| 220 if (!had_folded) | |
| 221 { | |
| 222 if (infop != NULL) | |
| 223 { | |
| 224 infop->fi_level = level; | |
| 225 infop->fi_lnum = lnum - lnum_rel; | |
| 226 infop->fi_low_level = low_level == 0 ? level : low_level; | |
| 227 } | |
| 228 return FALSE; | |
| 229 } | |
| 230 | |
| 6753 | 231 if (last > win->w_buffer->b_ml.ml_line_count) |
| 232 last = win->w_buffer->b_ml.ml_line_count; | |
| 7 | 233 if (lastp != NULL) |
| 234 *lastp = last; | |
| 235 if (firstp != NULL) | |
| 236 *firstp = first; | |
| 237 if (infop != NULL) | |
| 238 { | |
| 239 infop->fi_level = level + 1; | |
| 240 infop->fi_lnum = first; | |
| 241 infop->fi_low_level = low_level == 0 ? level + 1 : low_level; | |
| 242 } | |
| 243 return TRUE; | |
| 244 } | |
| 245 | |
| 246 /* foldLevel() {{{2 */ | |
| 247 /* | |
| 248 * Return fold level at line number "lnum" in the current window. | |
| 249 */ | |
| 250 int | |
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251 foldLevel(linenr_T lnum) |
| 7 | 252 { |
| 253 /* While updating the folds lines between invalid_top and invalid_bot have | |
| 254 * an undefined fold level. Otherwise update the folds first. */ | |
| 255 if (invalid_top == (linenr_T)0) | |
| 256 checkupdate(curwin); | |
| 257 else if (lnum == prev_lnum && prev_lnum_lvl >= 0) | |
| 258 return prev_lnum_lvl; | |
| 259 else if (lnum >= invalid_top && lnum <= invalid_bot) | |
| 260 return -1; | |
| 261 | |
| 262 /* Return quickly when there is no folding at all in this window. */ | |
| 263 if (!hasAnyFolding(curwin)) | |
| 264 return 0; | |
| 265 | |
| 266 return foldLevelWin(curwin, lnum); | |
| 267 } | |
| 268 | |
| 269 /* lineFolded() {{{2 */ | |
| 270 /* | |
| 271 * Low level function to check if a line is folded. Doesn't use any caching. | |
| 272 * Return TRUE if line is folded. | |
| 273 * Return FALSE if line is not folded. | |
| 274 * Return MAYBE if the line is folded when next to a folded line. | |
| 275 */ | |
| 276 int | |
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277 lineFolded(win_T *win, linenr_T lnum) |
| 7 | 278 { |
| 279 return foldedCount(win, lnum, NULL) != 0; | |
| 280 } | |
| 281 | |
| 282 /* foldedCount() {{{2 */ | |
| 283 /* | |
| 284 * Count the number of lines that are folded at line number "lnum". | |
| 285 * Normally "lnum" is the first line of a possible fold, and the returned | |
| 286 * number is the number of lines in the fold. | |
| 287 * Doesn't use caching from the displayed window. | |
| 288 * Returns number of folded lines from "lnum", or 0 if line is not folded. | |
| 289 * When "infop" is not NULL, fills *infop with the fold level info. | |
| 290 */ | |
| 291 long | |
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292 foldedCount(win_T *win, linenr_T lnum, foldinfo_T *infop) |
| 7 | 293 { |
| 294 linenr_T last; | |
| 295 | |
| 296 if (hasFoldingWin(win, lnum, NULL, &last, FALSE, infop)) | |
| 297 return (long)(last - lnum + 1); | |
| 298 return 0; | |
| 299 } | |
| 300 | |
| 301 /* foldmethodIsManual() {{{2 */ | |
| 302 /* | |
| 303 * Return TRUE if 'foldmethod' is "manual" | |
| 304 */ | |
| 305 int | |
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306 foldmethodIsManual(win_T *wp) |
| 7 | 307 { |
| 308 return (wp->w_p_fdm[3] == 'u'); | |
| 309 } | |
| 310 | |
| 311 /* foldmethodIsIndent() {{{2 */ | |
| 312 /* | |
| 313 * Return TRUE if 'foldmethod' is "indent" | |
| 314 */ | |
| 315 int | |
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316 foldmethodIsIndent(win_T *wp) |
| 7 | 317 { |
| 318 return (wp->w_p_fdm[0] == 'i'); | |
| 319 } | |
| 320 | |
| 321 /* foldmethodIsExpr() {{{2 */ | |
| 322 /* | |
| 323 * Return TRUE if 'foldmethod' is "expr" | |
| 324 */ | |
| 325 int | |
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326 foldmethodIsExpr(win_T *wp) |
| 7 | 327 { |
| 328 return (wp->w_p_fdm[1] == 'x'); | |
| 329 } | |
| 330 | |
| 331 /* foldmethodIsMarker() {{{2 */ | |
| 332 /* | |
| 333 * Return TRUE if 'foldmethod' is "marker" | |
| 334 */ | |
| 335 int | |
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336 foldmethodIsMarker(win_T *wp) |
| 7 | 337 { |
| 338 return (wp->w_p_fdm[2] == 'r'); | |
| 339 } | |
| 340 | |
| 341 /* foldmethodIsSyntax() {{{2 */ | |
| 342 /* | |
| 343 * Return TRUE if 'foldmethod' is "syntax" | |
| 344 */ | |
| 345 int | |
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346 foldmethodIsSyntax(win_T *wp) |
| 7 | 347 { |
| 348 return (wp->w_p_fdm[0] == 's'); | |
| 349 } | |
| 350 | |
| 351 /* foldmethodIsDiff() {{{2 */ | |
| 352 /* | |
| 353 * Return TRUE if 'foldmethod' is "diff" | |
| 354 */ | |
| 355 int | |
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356 foldmethodIsDiff(win_T *wp) |
| 7 | 357 { |
| 358 return (wp->w_p_fdm[0] == 'd'); | |
| 359 } | |
| 360 | |
| 361 /* closeFold() {{{2 */ | |
| 362 /* | |
| 363 * Close fold for current window at line "lnum". | |
| 364 * Repeat "count" times. | |
| 365 */ | |
| 366 void | |
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367 closeFold(linenr_T lnum, long count) |
| 7 | 368 { |
| 369 setFoldRepeat(lnum, count, FALSE); | |
| 370 } | |
| 371 | |
| 372 /* closeFoldRecurse() {{{2 */ | |
| 373 /* | |
| 374 * Close fold for current window at line "lnum" recursively. | |
| 375 */ | |
| 376 void | |
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377 closeFoldRecurse(linenr_T lnum) |
| 7 | 378 { |
| 379 (void)setManualFold(lnum, FALSE, TRUE, NULL); | |
| 380 } | |
| 381 | |
| 382 /* opFoldRange() {{{2 */ | |
| 383 /* | |
| 384 * Open or Close folds for current window in lines "first" to "last". | |
| 385 * Used for "zo", "zO", "zc" and "zC" in Visual mode. | |
| 386 */ | |
| 387 void | |
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388 opFoldRange( |
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389 linenr_T first, |
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390 linenr_T last, |
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391 int opening, /* TRUE to open, FALSE to close */ |
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392 int recurse, /* TRUE to do it recursively */ |
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393 int had_visual) /* TRUE when Visual selection used */ |
| 7 | 394 { |
| 395 int done = DONE_NOTHING; /* avoid error messages */ | |
| 396 linenr_T lnum; | |
| 397 linenr_T lnum_next; | |
| 398 | |
| 399 for (lnum = first; lnum <= last; lnum = lnum_next + 1) | |
| 400 { | |
| 401 lnum_next = lnum; | |
| 402 /* Opening one level only: next fold to open is after the one going to | |
| 403 * be opened. */ | |
| 404 if (opening && !recurse) | |
| 405 (void)hasFolding(lnum, NULL, &lnum_next); | |
| 406 (void)setManualFold(lnum, opening, recurse, &done); | |
| 407 /* Closing one level only: next line to close a fold is after just | |
| 408 * closed fold. */ | |
| 409 if (!opening && !recurse) | |
| 410 (void)hasFolding(lnum, NULL, &lnum_next); | |
| 411 } | |
| 412 if (done == DONE_NOTHING) | |
| 413 EMSG(_(e_nofold)); | |
| 414 /* Force a redraw to remove the Visual highlighting. */ | |
| 415 if (had_visual) | |
| 416 redraw_curbuf_later(INVERTED); | |
| 417 } | |
| 418 | |
| 419 /* openFold() {{{2 */ | |
| 420 /* | |
| 421 * Open fold for current window at line "lnum". | |
| 422 * Repeat "count" times. | |
| 423 */ | |
| 424 void | |
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425 openFold(linenr_T lnum, long count) |
| 7 | 426 { |
| 427 setFoldRepeat(lnum, count, TRUE); | |
| 428 } | |
| 429 | |
| 430 /* openFoldRecurse() {{{2 */ | |
| 431 /* | |
| 432 * Open fold for current window at line "lnum" recursively. | |
| 433 */ | |
| 434 void | |
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435 openFoldRecurse(linenr_T lnum) |
| 7 | 436 { |
| 437 (void)setManualFold(lnum, TRUE, TRUE, NULL); | |
| 438 } | |
| 439 | |
| 440 /* foldOpenCursor() {{{2 */ | |
| 441 /* | |
| 442 * Open folds until the cursor line is not in a closed fold. | |
| 443 */ | |
| 444 void | |
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445 foldOpenCursor(void) |
| 7 | 446 { |
| 447 int done; | |
| 448 | |
| 449 checkupdate(curwin); | |
| 450 if (hasAnyFolding(curwin)) | |
| 451 for (;;) | |
| 452 { | |
| 453 done = DONE_NOTHING; | |
| 454 (void)setManualFold(curwin->w_cursor.lnum, TRUE, FALSE, &done); | |
| 455 if (!(done & DONE_ACTION)) | |
| 456 break; | |
| 457 } | |
| 458 } | |
| 459 | |
| 460 /* newFoldLevel() {{{2 */ | |
| 461 /* | |
| 462 * Set new foldlevel for current window. | |
| 463 */ | |
| 464 void | |
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465 newFoldLevel(void) |
| 7 | 466 { |
| 467 newFoldLevelWin(curwin); | |
| 468 | |
| 469 #ifdef FEAT_DIFF | |
| 470 if (foldmethodIsDiff(curwin) && curwin->w_p_scb) | |
| 471 { | |
| 472 win_T *wp; | |
| 473 | |
| 474 /* | |
| 475 * Set the same foldlevel in other windows in diff mode. | |
| 476 */ | |
| 477 FOR_ALL_WINDOWS(wp) | |
| 478 { | |
| 479 if (wp != curwin && foldmethodIsDiff(wp) && wp->w_p_scb) | |
| 480 { | |
| 481 wp->w_p_fdl = curwin->w_p_fdl; | |
| 482 newFoldLevelWin(wp); | |
| 483 } | |
| 484 } | |
| 485 } | |
| 486 #endif | |
| 487 } | |
| 488 | |
| 489 static void | |
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490 newFoldLevelWin(win_T *wp) |
| 7 | 491 { |
| 492 fold_T *fp; | |
| 493 int i; | |
| 494 | |
| 495 checkupdate(wp); | |
| 496 if (wp->w_fold_manual) | |
| 497 { | |
| 498 /* Set all flags for the first level of folds to FD_LEVEL. Following | |
| 499 * manual open/close will then change the flags to FD_OPEN or | |
| 500 * FD_CLOSED for those folds that don't use 'foldlevel'. */ | |
| 501 fp = (fold_T *)wp->w_folds.ga_data; | |
| 502 for (i = 0; i < wp->w_folds.ga_len; ++i) | |
| 503 fp[i].fd_flags = FD_LEVEL; | |
| 504 wp->w_fold_manual = FALSE; | |
| 505 } | |
| 506 changed_window_setting_win(wp); | |
| 507 } | |
| 508 | |
| 509 /* foldCheckClose() {{{2 */ | |
| 510 /* | |
| 511 * Apply 'foldlevel' to all folds that don't contain the cursor. | |
| 512 */ | |
| 513 void | |
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514 foldCheckClose(void) |
| 7 | 515 { |
| 516 if (*p_fcl != NUL) /* can only be "all" right now */ | |
| 517 { | |
| 518 checkupdate(curwin); | |
| 519 if (checkCloseRec(&curwin->w_folds, curwin->w_cursor.lnum, | |
| 520 (int)curwin->w_p_fdl)) | |
| 521 changed_window_setting(); | |
| 522 } | |
| 523 } | |
| 524 | |
| 525 /* checkCloseRec() {{{2 */ | |
| 526 static int | |
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527 checkCloseRec(garray_T *gap, linenr_T lnum, int level) |
| 7 | 528 { |
| 529 fold_T *fp; | |
| 530 int retval = FALSE; | |
| 531 int i; | |
| 532 | |
| 533 fp = (fold_T *)gap->ga_data; | |
| 534 for (i = 0; i < gap->ga_len; ++i) | |
| 535 { | |
| 536 /* Only manually opened folds may need to be closed. */ | |
| 537 if (fp[i].fd_flags == FD_OPEN) | |
| 538 { | |
| 539 if (level <= 0 && (lnum < fp[i].fd_top | |
| 540 || lnum >= fp[i].fd_top + fp[i].fd_len)) | |
| 541 { | |
| 542 fp[i].fd_flags = FD_LEVEL; | |
| 543 retval = TRUE; | |
| 544 } | |
| 545 else | |
| 546 retval |= checkCloseRec(&fp[i].fd_nested, lnum - fp[i].fd_top, | |
| 547 level - 1); | |
| 548 } | |
| 549 } | |
| 550 return retval; | |
| 551 } | |
| 552 | |
| 553 /* foldCreateAllowed() {{{2 */ | |
| 554 /* | |
| 555 * Return TRUE if it's allowed to manually create or delete a fold. | |
| 556 * Give an error message and return FALSE if not. | |
| 557 */ | |
| 558 int | |
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559 foldManualAllowed(int create) |
| 7 | 560 { |
| 561 if (foldmethodIsManual(curwin) || foldmethodIsMarker(curwin)) | |
| 562 return TRUE; | |
| 563 if (create) | |
| 564 EMSG(_("E350: Cannot create fold with current 'foldmethod'")); | |
| 565 else | |
| 566 EMSG(_("E351: Cannot delete fold with current 'foldmethod'")); | |
| 567 return FALSE; | |
| 568 } | |
| 569 | |
| 570 /* foldCreate() {{{2 */ | |
| 571 /* | |
| 572 * Create a fold from line "start" to line "end" (inclusive) in the current | |
| 573 * window. | |
| 574 */ | |
| 575 void | |
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576 foldCreate(linenr_T start, linenr_T end) |
| 7 | 577 { |
| 578 fold_T *fp; | |
| 579 garray_T *gap; | |
| 580 garray_T fold_ga; | |
| 581 int i, j; | |
| 582 int cont; | |
| 583 int use_level = FALSE; | |
| 584 int closed = FALSE; | |
| 585 int level = 0; | |
| 586 linenr_T start_rel = start; | |
| 587 linenr_T end_rel = end; | |
| 588 | |
| 589 if (start > end) | |
| 590 { | |
| 591 /* reverse the range */ | |
| 592 end = start_rel; | |
| 593 start = end_rel; | |
| 594 start_rel = start; | |
| 595 end_rel = end; | |
| 596 } | |
| 597 | |
| 598 /* When 'foldmethod' is "marker" add markers, which creates the folds. */ | |
| 599 if (foldmethodIsMarker(curwin)) | |
| 600 { | |
| 601 foldCreateMarkers(start, end); | |
| 602 return; | |
| 603 } | |
| 604 | |
| 605 checkupdate(curwin); | |
| 606 | |
| 607 /* Find the place to insert the new fold. */ | |
| 608 gap = &curwin->w_folds; | |
| 609 for (;;) | |
| 610 { | |
| 611 if (!foldFind(gap, start_rel, &fp)) | |
| 612 break; | |
| 613 if (fp->fd_top + fp->fd_len > end_rel) | |
| 614 { | |
| 615 /* New fold is completely inside this fold: Go one level deeper. */ | |
| 616 gap = &fp->fd_nested; | |
| 617 start_rel -= fp->fd_top; | |
| 618 end_rel -= fp->fd_top; | |
| 619 if (use_level || fp->fd_flags == FD_LEVEL) | |
| 620 { | |
| 621 use_level = TRUE; | |
| 622 if (level >= curwin->w_p_fdl) | |
| 623 closed = TRUE; | |
| 624 } | |
| 625 else if (fp->fd_flags == FD_CLOSED) | |
| 626 closed = TRUE; | |
| 627 ++level; | |
| 628 } | |
| 629 else | |
| 630 { | |
| 631 /* This fold and new fold overlap: Insert here and move some folds | |
| 632 * inside the new fold. */ | |
| 633 break; | |
| 634 } | |
| 635 } | |
| 636 | |
| 637 i = (int)(fp - (fold_T *)gap->ga_data); | |
| 638 if (ga_grow(gap, 1) == OK) | |
| 639 { | |
| 640 fp = (fold_T *)gap->ga_data + i; | |
| 641 ga_init2(&fold_ga, (int)sizeof(fold_T), 10); | |
| 642 | |
| 643 /* Count number of folds that will be contained in the new fold. */ | |
| 644 for (cont = 0; i + cont < gap->ga_len; ++cont) | |
| 645 if (fp[cont].fd_top > end_rel) | |
| 646 break; | |
| 647 if (cont > 0 && ga_grow(&fold_ga, cont) == OK) | |
| 648 { | |
| 649 /* If the first fold starts before the new fold, let the new fold | |
| 650 * start there. Otherwise the existing fold would change. */ | |
| 651 if (start_rel > fp->fd_top) | |
| 652 start_rel = fp->fd_top; | |
| 653 | |
| 654 /* When last contained fold isn't completely contained, adjust end | |
| 655 * of new fold. */ | |
| 656 if (end_rel < fp[cont - 1].fd_top + fp[cont - 1].fd_len - 1) | |
| 657 end_rel = fp[cont - 1].fd_top + fp[cont - 1].fd_len - 1; | |
| 658 /* Move contained folds to inside new fold. */ | |
| 659 mch_memmove(fold_ga.ga_data, fp, sizeof(fold_T) * cont); | |
| 660 fold_ga.ga_len += cont; | |
| 661 i += cont; | |
| 662 | |
| 663 /* Adjust line numbers in contained folds to be relative to the | |
| 664 * new fold. */ | |
| 665 for (j = 0; j < cont; ++j) | |
| 666 ((fold_T *)fold_ga.ga_data)[j].fd_top -= start_rel; | |
| 667 } | |
| 668 /* Move remaining entries to after the new fold. */ | |
| 669 if (i < gap->ga_len) | |
| 670 mch_memmove(fp + 1, (fold_T *)gap->ga_data + i, | |
| 671 sizeof(fold_T) * (gap->ga_len - i)); | |
| 672 gap->ga_len = gap->ga_len + 1 - cont; | |
| 673 | |
| 674 /* insert new fold */ | |
| 675 fp->fd_nested = fold_ga; | |
| 676 fp->fd_top = start_rel; | |
| 677 fp->fd_len = end_rel - start_rel + 1; | |
| 678 | |
| 679 /* We want the new fold to be closed. If it would remain open because | |
| 680 * of using 'foldlevel', need to adjust fd_flags of containing folds. | |
| 681 */ | |
| 682 if (use_level && !closed && level < curwin->w_p_fdl) | |
| 683 closeFold(start, 1L); | |
| 684 if (!use_level) | |
| 685 curwin->w_fold_manual = TRUE; | |
| 686 fp->fd_flags = FD_CLOSED; | |
| 687 fp->fd_small = MAYBE; | |
| 688 | |
| 689 /* redraw */ | |
| 690 changed_window_setting(); | |
| 691 } | |
| 692 } | |
| 693 | |
| 694 /* deleteFold() {{{2 */ | |
| 695 /* | |
| 696 * Delete a fold at line "start" in the current window. | |
| 697 * When "end" is not 0, delete all folds from "start" to "end". | |
| 698 * When "recursive" is TRUE delete recursively. | |
| 699 */ | |
| 700 void | |
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701 deleteFold( |
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702 linenr_T start, |
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703 linenr_T end, |
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704 int recursive, |
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705 int had_visual) /* TRUE when Visual selection used */ |
| 7 | 706 { |
| 707 garray_T *gap; | |
| 708 fold_T *fp; | |
| 709 garray_T *found_ga; | |
| 710 fold_T *found_fp = NULL; | |
| 711 linenr_T found_off = 0; | |
| 1780 | 712 int use_level; |
| 7 | 713 int maybe_small = FALSE; |
| 714 int level = 0; | |
| 715 linenr_T lnum = start; | |
| 716 linenr_T lnum_off; | |
| 717 int did_one = FALSE; | |
| 718 linenr_T first_lnum = MAXLNUM; | |
| 719 linenr_T last_lnum = 0; | |
| 720 | |
| 721 checkupdate(curwin); | |
| 722 | |
| 723 while (lnum <= end) | |
| 724 { | |
| 725 /* Find the deepest fold for "start". */ | |
| 726 gap = &curwin->w_folds; | |
| 727 found_ga = NULL; | |
| 728 lnum_off = 0; | |
| 1780 | 729 use_level = FALSE; |
| 7 | 730 for (;;) |
| 731 { | |
| 732 if (!foldFind(gap, lnum - lnum_off, &fp)) | |
| 733 break; | |
| 734 /* lnum is inside this fold, remember info */ | |
| 735 found_ga = gap; | |
| 736 found_fp = fp; | |
| 737 found_off = lnum_off; | |
| 738 | |
| 739 /* if "lnum" is folded, don't check nesting */ | |
| 740 if (check_closed(curwin, fp, &use_level, level, | |
| 741 &maybe_small, lnum_off)) | |
| 742 break; | |
| 743 | |
| 744 /* check nested folds */ | |
| 745 gap = &fp->fd_nested; | |
| 746 lnum_off += fp->fd_top; | |
| 747 ++level; | |
| 748 } | |
| 749 if (found_ga == NULL) | |
| 750 { | |
| 751 ++lnum; | |
| 752 } | |
| 753 else | |
| 754 { | |
| 755 lnum = found_fp->fd_top + found_fp->fd_len + found_off; | |
| 756 | |
| 757 if (foldmethodIsManual(curwin)) | |
| 758 deleteFoldEntry(found_ga, | |
| 759 (int)(found_fp - (fold_T *)found_ga->ga_data), recursive); | |
| 760 else | |
| 761 { | |
| 1780 | 762 if (first_lnum > found_fp->fd_top + found_off) |
| 763 first_lnum = found_fp->fd_top + found_off; | |
| 764 if (last_lnum < lnum) | |
| 7 | 765 last_lnum = lnum; |
| 1780 | 766 if (!did_one) |
| 767 parseMarker(curwin); | |
| 7 | 768 deleteFoldMarkers(found_fp, recursive, found_off); |
| 769 } | |
| 1780 | 770 did_one = TRUE; |
| 7 | 771 |
| 772 /* redraw window */ | |
| 773 changed_window_setting(); | |
| 774 } | |
| 775 } | |
| 776 if (!did_one) | |
| 777 { | |
| 778 EMSG(_(e_nofold)); | |
| 779 /* Force a redraw to remove the Visual highlighting. */ | |
| 780 if (had_visual) | |
| 781 redraw_curbuf_later(INVERTED); | |
| 782 } | |
| 1780 | 783 else |
| 784 /* Deleting markers may make cursor column invalid. */ | |
| 785 check_cursor_col(); | |
| 786 | |
| 7 | 787 if (last_lnum > 0) |
| 788 changed_lines(first_lnum, (colnr_T)0, last_lnum, 0L); | |
| 789 } | |
| 790 | |
| 791 /* clearFolding() {{{2 */ | |
| 792 /* | |
| 793 * Remove all folding for window "win". | |
| 794 */ | |
| 795 void | |
|
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796 clearFolding(win_T *win) |
| 7 | 797 { |
| 798 deleteFoldRecurse(&win->w_folds); | |
| 799 win->w_foldinvalid = FALSE; | |
| 800 } | |
| 801 | |
| 802 /* foldUpdate() {{{2 */ | |
| 803 /* | |
| 804 * Update folds for changes in the buffer of a window. | |
| 805 * Note that inserted/deleted lines must have already been taken care of by | |
| 806 * calling foldMarkAdjust(). | |
| 807 * The changes in lines from top to bot (inclusive). | |
| 808 */ | |
| 809 void | |
|
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810 foldUpdate(win_T *wp, linenr_T top, linenr_T bot) |
| 7 | 811 { |
| 812 fold_T *fp; | |
| 813 | |
|
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814 if (disable_fold_update > 0) |
|
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815 return; |
|
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|
816 |
| 7 | 817 /* Mark all folds from top to bot as maybe-small. */ |
| 6755 | 818 (void)foldFind(&wp->w_folds, top, &fp); |
| 819 while (fp < (fold_T *)wp->w_folds.ga_data + wp->w_folds.ga_len | |
| 7 | 820 && fp->fd_top < bot) |
| 821 { | |
| 822 fp->fd_small = MAYBE; | |
| 823 ++fp; | |
| 824 } | |
| 825 | |
| 826 if (foldmethodIsIndent(wp) | |
| 827 || foldmethodIsExpr(wp) | |
| 828 || foldmethodIsMarker(wp) | |
| 829 #ifdef FEAT_DIFF | |
| 830 || foldmethodIsDiff(wp) | |
| 831 #endif | |
| 832 || foldmethodIsSyntax(wp)) | |
| 1424 | 833 { |
| 834 int save_got_int = got_int; | |
| 835 | |
| 836 /* reset got_int here, otherwise it won't work */ | |
| 837 got_int = FALSE; | |
| 7 | 838 foldUpdateIEMS(wp, top, bot); |
| 1424 | 839 got_int |= save_got_int; |
| 840 } | |
| 7 | 841 } |
| 842 | |
| 843 /* foldUpdateAll() {{{2 */ | |
| 844 /* | |
| 845 * Update all lines in a window for folding. | |
| 846 * Used when a fold setting changes or after reloading the buffer. | |
| 847 * The actual updating is postponed until fold info is used, to avoid doing | |
| 848 * every time a setting is changed or a syntax item is added. | |
| 849 */ | |
| 850 void | |
|
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851 foldUpdateAll(win_T *win) |
| 7 | 852 { |
| 853 win->w_foldinvalid = TRUE; | |
| 854 redraw_win_later(win, NOT_VALID); | |
| 855 } | |
| 856 | |
| 857 /* foldMoveTo() {{{2 */ | |
| 858 /* | |
| 859 * If "updown" is FALSE: Move to the start or end of the fold. | |
| 860 * If "updown" is TRUE: move to fold at the same level. | |
| 861 * If not moved return FAIL. | |
| 862 */ | |
| 863 int | |
|
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864 foldMoveTo( |
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865 int updown, |
|
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866 int dir, /* FORWARD or BACKWARD */ |
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867 long count) |
| 7 | 868 { |
| 869 long n; | |
| 870 int retval = FAIL; | |
| 871 linenr_T lnum_off; | |
| 872 linenr_T lnum_found; | |
| 873 linenr_T lnum; | |
| 874 int use_level; | |
| 875 int maybe_small; | |
| 876 garray_T *gap; | |
| 877 fold_T *fp; | |
| 878 int level; | |
| 879 int last; | |
| 880 | |
| 36 | 881 checkupdate(curwin); |
| 882 | |
| 7 | 883 /* Repeat "count" times. */ |
| 884 for (n = 0; n < count; ++n) | |
| 885 { | |
| 886 /* Find nested folds. Stop when a fold is closed. The deepest fold | |
| 887 * that moves the cursor is used. */ | |
| 888 lnum_off = 0; | |
| 889 gap = &curwin->w_folds; | |
| 890 use_level = FALSE; | |
| 891 maybe_small = FALSE; | |
| 892 lnum_found = curwin->w_cursor.lnum; | |
| 893 level = 0; | |
| 894 last = FALSE; | |
| 895 for (;;) | |
| 896 { | |
| 897 if (!foldFind(gap, curwin->w_cursor.lnum - lnum_off, &fp)) | |
| 898 { | |
| 899 if (!updown) | |
| 900 break; | |
| 901 | |
| 902 /* When moving up, consider a fold above the cursor; when | |
| 903 * moving down consider a fold below the cursor. */ | |
| 904 if (dir == FORWARD) | |
| 905 { | |
| 906 if (fp - (fold_T *)gap->ga_data >= gap->ga_len) | |
| 907 break; | |
| 908 --fp; | |
| 909 } | |
| 910 else | |
| 911 { | |
| 912 if (fp == (fold_T *)gap->ga_data) | |
| 913 break; | |
| 914 } | |
| 915 /* don't look for contained folds, they will always move | |
| 916 * the cursor too far. */ | |
| 917 last = TRUE; | |
| 918 } | |
| 919 | |
| 920 if (!last) | |
| 921 { | |
| 922 /* Check if this fold is closed. */ | |
| 923 if (check_closed(curwin, fp, &use_level, level, | |
| 924 &maybe_small, lnum_off)) | |
| 925 last = TRUE; | |
| 926 | |
| 927 /* "[z" and "]z" stop at closed fold */ | |
| 928 if (last && !updown) | |
| 929 break; | |
| 930 } | |
| 931 | |
| 932 if (updown) | |
| 933 { | |
| 934 if (dir == FORWARD) | |
| 935 { | |
| 936 /* to start of next fold if there is one */ | |
| 937 if (fp + 1 - (fold_T *)gap->ga_data < gap->ga_len) | |
| 938 { | |
| 939 lnum = fp[1].fd_top + lnum_off; | |
| 940 if (lnum > curwin->w_cursor.lnum) | |
| 941 lnum_found = lnum; | |
| 942 } | |
| 943 } | |
| 944 else | |
| 945 { | |
| 946 /* to end of previous fold if there is one */ | |
| 947 if (fp > (fold_T *)gap->ga_data) | |
| 948 { | |
| 949 lnum = fp[-1].fd_top + lnum_off + fp[-1].fd_len - 1; | |
| 950 if (lnum < curwin->w_cursor.lnum) | |
| 951 lnum_found = lnum; | |
| 952 } | |
| 953 } | |
| 954 } | |
| 955 else | |
| 956 { | |
| 957 /* Open fold found, set cursor to its start/end and then check | |
| 958 * nested folds. */ | |
| 959 if (dir == FORWARD) | |
| 960 { | |
| 961 lnum = fp->fd_top + lnum_off + fp->fd_len - 1; | |
| 962 if (lnum > curwin->w_cursor.lnum) | |
| 963 lnum_found = lnum; | |
| 964 } | |
| 965 else | |
| 966 { | |
| 967 lnum = fp->fd_top + lnum_off; | |
| 968 if (lnum < curwin->w_cursor.lnum) | |
| 969 lnum_found = lnum; | |
| 970 } | |
| 971 } | |
| 972 | |
| 973 if (last) | |
| 974 break; | |
| 975 | |
| 976 /* Check nested folds (if any). */ | |
| 977 gap = &fp->fd_nested; | |
| 978 lnum_off += fp->fd_top; | |
| 979 ++level; | |
| 980 } | |
| 981 if (lnum_found != curwin->w_cursor.lnum) | |
| 982 { | |
| 983 if (retval == FAIL) | |
| 984 setpcmark(); | |
| 985 curwin->w_cursor.lnum = lnum_found; | |
| 986 curwin->w_cursor.col = 0; | |
| 987 retval = OK; | |
| 988 } | |
| 989 else | |
| 990 break; | |
| 991 } | |
| 992 | |
| 993 return retval; | |
| 994 } | |
| 995 | |
| 996 /* foldInitWin() {{{2 */ | |
| 997 /* | |
| 998 * Init the fold info in a new window. | |
| 999 */ | |
| 1000 void | |
|
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1001 foldInitWin(win_T *new_win) |
| 7 | 1002 { |
| 3263 | 1003 ga_init2(&new_win->w_folds, (int)sizeof(fold_T), 10); |
| 7 | 1004 } |
| 1005 | |
| 1006 /* find_wl_entry() {{{2 */ | |
| 1007 /* | |
| 1008 * Find an entry in the win->w_lines[] array for buffer line "lnum". | |
| 1009 * Only valid entries are considered (for entries where wl_valid is FALSE the | |
| 1010 * line number can be wrong). | |
| 1011 * Returns index of entry or -1 if not found. | |
| 1012 */ | |
| 1013 int | |
|
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1014 find_wl_entry(win_T *win, linenr_T lnum) |
| 7 | 1015 { |
| 1016 int i; | |
| 1017 | |
|
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1018 for (i = 0; i < win->w_lines_valid; ++i) |
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1019 if (win->w_lines[i].wl_valid) |
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1020 { |
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1021 if (lnum < win->w_lines[i].wl_lnum) |
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1022 return -1; |
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1023 if (lnum <= win->w_lines[i].wl_lastlnum) |
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1024 return i; |
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1025 } |
| 7 | 1026 return -1; |
| 1027 } | |
| 1028 | |
| 1029 /* foldAdjustVisual() {{{2 */ | |
| 1030 /* | |
| 1031 * Adjust the Visual area to include any fold at the start or end completely. | |
| 1032 */ | |
| 1033 void | |
|
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1034 foldAdjustVisual(void) |
| 7 | 1035 { |
| 1036 pos_T *start, *end; | |
| 1037 char_u *ptr; | |
| 1038 | |
| 1039 if (!VIsual_active || !hasAnyFolding(curwin)) | |
| 1040 return; | |
| 1041 | |
| 1042 if (ltoreq(VIsual, curwin->w_cursor)) | |
| 1043 { | |
| 1044 start = &VIsual; | |
| 1045 end = &curwin->w_cursor; | |
| 1046 } | |
| 1047 else | |
| 1048 { | |
| 1049 start = &curwin->w_cursor; | |
| 1050 end = &VIsual; | |
| 1051 } | |
| 1052 if (hasFolding(start->lnum, &start->lnum, NULL)) | |
| 1053 start->col = 0; | |
| 1054 if (hasFolding(end->lnum, NULL, &end->lnum)) | |
| 1055 { | |
| 1056 ptr = ml_get(end->lnum); | |
| 1057 end->col = (colnr_T)STRLEN(ptr); | |
| 1058 if (end->col > 0 && *p_sel == 'o') | |
| 1059 --end->col; | |
| 1060 #ifdef FEAT_MBYTE | |
| 1061 /* prevent cursor from moving on the trail byte */ | |
| 1062 if (has_mbyte) | |
| 1063 mb_adjust_cursor(); | |
| 1064 #endif | |
| 1065 } | |
| 1066 } | |
| 1067 | |
| 1068 /* cursor_foldstart() {{{2 */ | |
| 1069 /* | |
| 1070 * Move the cursor to the first line of a closed fold. | |
| 1071 */ | |
| 1072 void | |
|
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1073 foldAdjustCursor(void) |
| 7 | 1074 { |
| 1075 (void)hasFolding(curwin->w_cursor.lnum, &curwin->w_cursor.lnum, NULL); | |
| 1076 } | |
| 1077 | |
| 1078 /* Internal functions for "fold_T" {{{1 */ | |
| 1079 /* cloneFoldGrowArray() {{{2 */ | |
| 1080 /* | |
| 1081 * Will "clone" (i.e deep copy) a garray_T of folds. | |
| 1082 * | |
| 1083 * Return FAIL if the operation cannot be completed, otherwise OK. | |
| 1084 */ | |
| 1085 void | |
|
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1086 cloneFoldGrowArray(garray_T *from, garray_T *to) |
| 7 | 1087 { |
| 1088 int i; | |
| 1089 fold_T *from_p; | |
| 1090 fold_T *to_p; | |
| 1091 | |
| 1092 ga_init2(to, from->ga_itemsize, from->ga_growsize); | |
| 1093 if (from->ga_len == 0 || ga_grow(to, from->ga_len) == FAIL) | |
| 1094 return; | |
| 1095 | |
| 1096 from_p = (fold_T *)from->ga_data; | |
| 1097 to_p = (fold_T *)to->ga_data; | |
| 1098 | |
| 1099 for (i = 0; i < from->ga_len; i++) | |
| 1100 { | |
| 1101 to_p->fd_top = from_p->fd_top; | |
| 1102 to_p->fd_len = from_p->fd_len; | |
| 1103 to_p->fd_flags = from_p->fd_flags; | |
| 1104 to_p->fd_small = from_p->fd_small; | |
| 1105 cloneFoldGrowArray(&from_p->fd_nested, &to_p->fd_nested); | |
| 1106 ++to->ga_len; | |
| 1107 ++from_p; | |
| 1108 ++to_p; | |
| 1109 } | |
| 1110 } | |
| 1111 | |
| 1112 /* foldFind() {{{2 */ | |
| 1113 /* | |
| 1114 * Search for line "lnum" in folds of growarray "gap". | |
| 1115 * Set *fpp to the fold struct for the fold that contains "lnum" or | |
| 1116 * the first fold below it (careful: it can be beyond the end of the array!). | |
| 1117 * Returns FALSE when there is no fold that contains "lnum". | |
| 1118 */ | |
| 1119 static int | |
|
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1120 foldFind(garray_T *gap, linenr_T lnum, fold_T **fpp) |
| 7 | 1121 { |
| 1122 linenr_T low, high; | |
| 1123 fold_T *fp; | |
| 1124 int i; | |
| 1125 | |
| 1126 /* | |
| 1127 * Perform a binary search. | |
| 1128 * "low" is lowest index of possible match. | |
| 1129 * "high" is highest index of possible match. | |
| 1130 */ | |
| 1131 fp = (fold_T *)gap->ga_data; | |
| 1132 low = 0; | |
| 1133 high = gap->ga_len - 1; | |
| 1134 while (low <= high) | |
| 1135 { | |
| 1136 i = (low + high) / 2; | |
| 1137 if (fp[i].fd_top > lnum) | |
| 1138 /* fold below lnum, adjust high */ | |
| 1139 high = i - 1; | |
| 1140 else if (fp[i].fd_top + fp[i].fd_len <= lnum) | |
| 1141 /* fold above lnum, adjust low */ | |
| 1142 low = i + 1; | |
| 1143 else | |
| 1144 { | |
| 1145 /* lnum is inside this fold */ | |
| 1146 *fpp = fp + i; | |
| 1147 return TRUE; | |
| 1148 } | |
| 1149 } | |
| 1150 *fpp = fp + low; | |
| 1151 return FALSE; | |
| 1152 } | |
| 1153 | |
| 1154 /* foldLevelWin() {{{2 */ | |
| 1155 /* | |
| 1156 * Return fold level at line number "lnum" in window "wp". | |
| 1157 */ | |
| 1158 static int | |
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1159 foldLevelWin(win_T *wp, linenr_T lnum) |
| 7 | 1160 { |
| 1161 fold_T *fp; | |
| 1162 linenr_T lnum_rel = lnum; | |
| 1163 int level = 0; | |
| 1164 garray_T *gap; | |
| 1165 | |
| 1166 /* Recursively search for a fold that contains "lnum". */ | |
| 1167 gap = &wp->w_folds; | |
| 1168 for (;;) | |
| 1169 { | |
| 1170 if (!foldFind(gap, lnum_rel, &fp)) | |
| 1171 break; | |
| 1172 /* Check nested folds. Line number is relative to containing fold. */ | |
| 1173 gap = &fp->fd_nested; | |
| 1174 lnum_rel -= fp->fd_top; | |
| 1175 ++level; | |
| 1176 } | |
| 1177 | |
| 1178 return level; | |
| 1179 } | |
| 1180 | |
| 1181 /* checkupdate() {{{2 */ | |
| 1182 /* | |
| 1183 * Check if the folds in window "wp" are invalid and update them if needed. | |
| 1184 */ | |
| 1185 static void | |
|
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1186 checkupdate(win_T *wp) |
| 7 | 1187 { |
| 1188 if (wp->w_foldinvalid) | |
| 1189 { | |
| 1190 foldUpdate(wp, (linenr_T)1, (linenr_T)MAXLNUM); /* will update all */ | |
| 1191 wp->w_foldinvalid = FALSE; | |
| 1192 } | |
| 1193 } | |
| 1194 | |
| 1195 /* setFoldRepeat() {{{2 */ | |
| 1196 /* | |
| 1197 * Open or close fold for current window at line "lnum". | |
| 1198 * Repeat "count" times. | |
| 1199 */ | |
| 1200 static void | |
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1201 setFoldRepeat(linenr_T lnum, long count, int do_open) |
| 7 | 1202 { |
| 1203 int done; | |
| 1204 long n; | |
| 1205 | |
| 1206 for (n = 0; n < count; ++n) | |
| 1207 { | |
| 1208 done = DONE_NOTHING; | |
| 1757 | 1209 (void)setManualFold(lnum, do_open, FALSE, &done); |
| 7 | 1210 if (!(done & DONE_ACTION)) |
| 1211 { | |
| 1212 /* Only give an error message when no fold could be opened. */ | |
| 1213 if (n == 0 && !(done & DONE_FOLD)) | |
| 1214 EMSG(_(e_nofold)); | |
| 1215 break; | |
| 1216 } | |
| 1217 } | |
| 1218 } | |
| 1219 | |
| 1220 /* setManualFold() {{{2 */ | |
| 1221 /* | |
| 1222 * Open or close the fold in the current window which contains "lnum". | |
| 1223 * Also does this for other windows in diff mode when needed. | |
| 1224 */ | |
| 1225 static linenr_T | |
|
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1226 setManualFold( |
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1227 linenr_T lnum, |
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1228 int opening, /* TRUE when opening, FALSE when closing */ |
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1229 int recurse, /* TRUE when closing/opening recursive */ |
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1230 int *donep) |
| 7 | 1231 { |
| 1232 #ifdef FEAT_DIFF | |
| 1233 if (foldmethodIsDiff(curwin) && curwin->w_p_scb) | |
| 1234 { | |
| 1235 win_T *wp; | |
| 1236 linenr_T dlnum; | |
| 1237 | |
| 1238 /* | |
| 1239 * Do the same operation in other windows in diff mode. Calculate the | |
| 1240 * line number from the diffs. | |
| 1241 */ | |
| 1242 FOR_ALL_WINDOWS(wp) | |
| 1243 { | |
| 1244 if (wp != curwin && foldmethodIsDiff(wp) && wp->w_p_scb) | |
| 1245 { | |
| 1246 dlnum = diff_lnum_win(curwin->w_cursor.lnum, wp); | |
| 1247 if (dlnum != 0) | |
| 1248 (void)setManualFoldWin(wp, dlnum, opening, recurse, NULL); | |
| 1249 } | |
| 1250 } | |
| 1251 } | |
| 1252 #endif | |
| 1253 | |
| 1254 return setManualFoldWin(curwin, lnum, opening, recurse, donep); | |
| 1255 } | |
| 1256 | |
| 1257 /* setManualFoldWin() {{{2 */ | |
| 1258 /* | |
| 1259 * Open or close the fold in window "wp" which contains "lnum". | |
| 1260 * "donep", when not NULL, points to flag that is set to DONE_FOLD when some | |
| 1261 * fold was found and to DONE_ACTION when some fold was opened or closed. | |
| 1262 * When "donep" is NULL give an error message when no fold was found for | |
| 1263 * "lnum", but only if "wp" is "curwin". | |
| 1264 * Return the line number of the next line that could be closed. | |
| 1265 * It's only valid when "opening" is TRUE! | |
| 1266 */ | |
| 1267 static linenr_T | |
|
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1268 setManualFoldWin( |
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1269 win_T *wp, |
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1270 linenr_T lnum, |
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1271 int opening, /* TRUE when opening, FALSE when closing */ |
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1272 int recurse, /* TRUE when closing/opening recursive */ |
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1273 int *donep) |
| 7 | 1274 { |
| 1275 fold_T *fp; | |
| 1276 fold_T *fp2; | |
| 1277 fold_T *found = NULL; | |
| 1278 int j; | |
| 1279 int level = 0; | |
| 1280 int use_level = FALSE; | |
| 1281 int found_fold = FALSE; | |
| 1282 garray_T *gap; | |
| 1283 linenr_T next = MAXLNUM; | |
| 1284 linenr_T off = 0; | |
| 1285 int done = 0; | |
| 1286 | |
| 1287 checkupdate(wp); | |
| 1288 | |
| 1289 /* | |
| 1290 * Find the fold, open or close it. | |
| 1291 */ | |
| 1292 gap = &wp->w_folds; | |
| 1293 for (;;) | |
| 1294 { | |
| 1295 if (!foldFind(gap, lnum, &fp)) | |
| 1296 { | |
| 1297 /* If there is a following fold, continue there next time. */ | |
| 1298 if (fp < (fold_T *)gap->ga_data + gap->ga_len) | |
| 1299 next = fp->fd_top + off; | |
| 1300 break; | |
| 1301 } | |
| 1302 | |
| 1303 /* lnum is inside this fold */ | |
| 1304 found_fold = TRUE; | |
| 1305 | |
| 1306 /* If there is a following fold, continue there next time. */ | |
| 1307 if (fp + 1 < (fold_T *)gap->ga_data + gap->ga_len) | |
| 1308 next = fp[1].fd_top + off; | |
| 1309 | |
| 1310 /* Change from level-dependent folding to manual. */ | |
| 1311 if (use_level || fp->fd_flags == FD_LEVEL) | |
| 1312 { | |
| 1313 use_level = TRUE; | |
| 1314 if (level >= wp->w_p_fdl) | |
| 1315 fp->fd_flags = FD_CLOSED; | |
| 1316 else | |
| 1317 fp->fd_flags = FD_OPEN; | |
| 1318 fp2 = (fold_T *)fp->fd_nested.ga_data; | |
| 1319 for (j = 0; j < fp->fd_nested.ga_len; ++j) | |
| 1320 fp2[j].fd_flags = FD_LEVEL; | |
| 1321 } | |
| 1322 | |
| 1323 /* Simple case: Close recursively means closing the fold. */ | |
| 1324 if (!opening && recurse) | |
| 1325 { | |
| 1326 if (fp->fd_flags != FD_CLOSED) | |
| 1327 { | |
| 1328 done |= DONE_ACTION; | |
| 1329 fp->fd_flags = FD_CLOSED; | |
| 1330 } | |
| 1331 } | |
| 1332 else if (fp->fd_flags == FD_CLOSED) | |
| 1333 { | |
| 1334 /* When opening, open topmost closed fold. */ | |
| 1335 if (opening) | |
| 1336 { | |
| 1337 fp->fd_flags = FD_OPEN; | |
| 1338 done |= DONE_ACTION; | |
| 1339 if (recurse) | |
| 1340 foldOpenNested(fp); | |
| 1341 } | |
| 1342 break; | |
| 1343 } | |
| 1344 | |
| 1345 /* fold is open, check nested folds */ | |
| 1346 found = fp; | |
| 1347 gap = &fp->fd_nested; | |
| 1348 lnum -= fp->fd_top; | |
| 1349 off += fp->fd_top; | |
| 1350 ++level; | |
| 1351 } | |
| 1352 if (found_fold) | |
| 1353 { | |
| 1354 /* When closing and not recurse, close deepest open fold. */ | |
| 1355 if (!opening && found != NULL) | |
| 1356 { | |
| 1357 found->fd_flags = FD_CLOSED; | |
| 1358 done |= DONE_ACTION; | |
| 1359 } | |
| 1360 wp->w_fold_manual = TRUE; | |
| 1361 if (done & DONE_ACTION) | |
| 1362 changed_window_setting_win(wp); | |
| 1363 done |= DONE_FOLD; | |
| 1364 } | |
| 1365 else if (donep == NULL && wp == curwin) | |
| 1366 EMSG(_(e_nofold)); | |
| 1367 | |
| 1368 if (donep != NULL) | |
| 1369 *donep |= done; | |
| 1370 | |
| 1371 return next; | |
| 1372 } | |
| 1373 | |
| 1374 /* foldOpenNested() {{{2 */ | |
| 1375 /* | |
| 1376 * Open all nested folds in fold "fpr" recursively. | |
| 1377 */ | |
| 1378 static void | |
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1379 foldOpenNested(fold_T *fpr) |
| 7 | 1380 { |
| 1381 int i; | |
| 1382 fold_T *fp; | |
| 1383 | |
| 1384 fp = (fold_T *)fpr->fd_nested.ga_data; | |
| 1385 for (i = 0; i < fpr->fd_nested.ga_len; ++i) | |
| 1386 { | |
| 1387 foldOpenNested(&fp[i]); | |
| 1388 fp[i].fd_flags = FD_OPEN; | |
| 1389 } | |
| 1390 } | |
| 1391 | |
| 1392 /* deleteFoldEntry() {{{2 */ | |
| 1393 /* | |
| 1394 * Delete fold "idx" from growarray "gap". | |
| 1395 * When "recursive" is TRUE also delete all the folds contained in it. | |
| 1396 * When "recursive" is FALSE contained folds are moved one level up. | |
| 1397 */ | |
| 1398 static void | |
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1399 deleteFoldEntry(garray_T *gap, int idx, int recursive) |
| 7 | 1400 { |
| 1401 fold_T *fp; | |
| 1402 int i; | |
| 1403 long moved; | |
| 1404 fold_T *nfp; | |
| 1405 | |
| 1406 fp = (fold_T *)gap->ga_data + idx; | |
| 1407 if (recursive || fp->fd_nested.ga_len == 0) | |
| 1408 { | |
| 1409 /* recursively delete the contained folds */ | |
| 1410 deleteFoldRecurse(&fp->fd_nested); | |
| 1411 --gap->ga_len; | |
| 1412 if (idx < gap->ga_len) | |
| 1413 mch_memmove(fp, fp + 1, sizeof(fold_T) * (gap->ga_len - idx)); | |
| 1414 } | |
| 1415 else | |
| 1416 { | |
| 3028 | 1417 /* Move nested folds one level up, to overwrite the fold that is |
| 7 | 1418 * deleted. */ |
| 1419 moved = fp->fd_nested.ga_len; | |
| 1420 if (ga_grow(gap, (int)(moved - 1)) == OK) | |
| 1421 { | |
| 3028 | 1422 /* Get "fp" again, the array may have been reallocated. */ |
| 1423 fp = (fold_T *)gap->ga_data + idx; | |
| 1424 | |
| 7 | 1425 /* adjust fd_top and fd_flags for the moved folds */ |
| 1426 nfp = (fold_T *)fp->fd_nested.ga_data; | |
| 1427 for (i = 0; i < moved; ++i) | |
| 1428 { | |
| 1429 nfp[i].fd_top += fp->fd_top; | |
| 1430 if (fp->fd_flags == FD_LEVEL) | |
| 1431 nfp[i].fd_flags = FD_LEVEL; | |
| 1432 if (fp->fd_small == MAYBE) | |
| 1433 nfp[i].fd_small = MAYBE; | |
| 1434 } | |
| 1435 | |
| 1436 /* move the existing folds down to make room */ | |
| 3028 | 1437 if (idx + 1 < gap->ga_len) |
| 7 | 1438 mch_memmove(fp + moved, fp + 1, |
| 3028 | 1439 sizeof(fold_T) * (gap->ga_len - (idx + 1))); |
| 7 | 1440 /* move the contained folds one level up */ |
| 1441 mch_memmove(fp, nfp, (size_t)(sizeof(fold_T) * moved)); | |
| 1442 vim_free(nfp); | |
| 1443 gap->ga_len += moved - 1; | |
| 1444 } | |
| 1445 } | |
| 1446 } | |
| 1447 | |
| 1448 /* deleteFoldRecurse() {{{2 */ | |
| 1449 /* | |
| 1450 * Delete nested folds in a fold. | |
| 1451 */ | |
| 1452 void | |
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1453 deleteFoldRecurse(garray_T *gap) |
| 7 | 1454 { |
| 1455 int i; | |
| 1456 | |
| 1457 for (i = 0; i < gap->ga_len; ++i) | |
| 1458 deleteFoldRecurse(&(((fold_T *)(gap->ga_data))[i].fd_nested)); | |
| 1459 ga_clear(gap); | |
| 1460 } | |
| 1461 | |
| 1462 /* foldMarkAdjust() {{{2 */ | |
| 1463 /* | |
| 1464 * Update line numbers of folds for inserted/deleted lines. | |
| 1465 */ | |
| 1466 void | |
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1467 foldMarkAdjust( |
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1468 win_T *wp, |
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1469 linenr_T line1, |
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1470 linenr_T line2, |
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1471 long amount, |
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1472 long amount_after) |
| 7 | 1473 { |
| 1474 /* If deleting marks from line1 to line2, but not deleting all those | |
| 1475 * lines, set line2 so that only deleted lines have their folds removed. */ | |
| 1476 if (amount == MAXLNUM && line2 >= line1 && line2 - line1 >= -amount_after) | |
| 1477 line2 = line1 - amount_after - 1; | |
| 1478 /* If appending a line in Insert mode, it should be included in the fold | |
| 1479 * just above the line. */ | |
| 1480 if ((State & INSERT) && amount == (linenr_T)1 && line2 == MAXLNUM) | |
| 1481 --line1; | |
| 1482 foldMarkAdjustRecurse(&wp->w_folds, line1, line2, amount, amount_after); | |
| 1483 } | |
| 1484 | |
| 1485 /* foldMarkAdjustRecurse() {{{2 */ | |
| 1486 static void | |
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1487 foldMarkAdjustRecurse( |
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1488 garray_T *gap, |
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1489 linenr_T line1, |
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1490 linenr_T line2, |
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1491 long amount, |
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1492 long amount_after) |
| 7 | 1493 { |
| 1494 fold_T *fp; | |
| 1495 int i; | |
| 1496 linenr_T last; | |
| 1497 linenr_T top; | |
| 1498 | |
| 1499 /* In Insert mode an inserted line at the top of a fold is considered part | |
| 1500 * of the fold, otherwise it isn't. */ | |
| 1501 if ((State & INSERT) && amount == (linenr_T)1 && line2 == MAXLNUM) | |
| 1502 top = line1 + 1; | |
| 1503 else | |
| 1504 top = line1; | |
| 1505 | |
| 1506 /* Find the fold containing or just below "line1". */ | |
| 1507 (void)foldFind(gap, line1, &fp); | |
| 1508 | |
| 1509 /* | |
| 1510 * Adjust all folds below "line1" that are affected. | |
| 1511 */ | |
| 1512 for (i = (int)(fp - (fold_T *)gap->ga_data); i < gap->ga_len; ++i, ++fp) | |
| 1513 { | |
| 1514 /* | |
| 1515 * Check for these situations: | |
| 1516 * 1 2 3 | |
| 1517 * 1 2 3 | |
| 1518 * line1 2 3 4 5 | |
| 1519 * 2 3 4 5 | |
| 1520 * 2 3 4 5 | |
| 1521 * line2 2 3 4 5 | |
| 1522 * 3 5 6 | |
| 1523 * 3 5 6 | |
| 1524 */ | |
| 1525 | |
| 1526 last = fp->fd_top + fp->fd_len - 1; /* last line of fold */ | |
| 1527 | |
| 1528 /* 1. fold completely above line1: nothing to do */ | |
| 1529 if (last < line1) | |
| 1530 continue; | |
| 1531 | |
| 1532 /* 6. fold below line2: only adjust for amount_after */ | |
| 1533 if (fp->fd_top > line2) | |
| 1534 { | |
| 1535 if (amount_after == 0) | |
| 1536 break; | |
| 1537 fp->fd_top += amount_after; | |
| 1538 } | |
| 1539 else | |
| 1540 { | |
| 1541 if (fp->fd_top >= top && last <= line2) | |
| 1542 { | |
| 1543 /* 4. fold completely contained in range */ | |
| 1544 if (amount == MAXLNUM) | |
| 1545 { | |
| 1546 /* Deleting lines: delete the fold completely */ | |
| 1547 deleteFoldEntry(gap, i, TRUE); | |
| 1548 --i; /* adjust index for deletion */ | |
| 1549 --fp; | |
| 1550 } | |
| 1551 else | |
| 1552 fp->fd_top += amount; | |
| 1553 } | |
| 1554 else | |
| 1555 { | |
| 1556 if (fp->fd_top < top) | |
| 1557 { | |
| 1964 | 1558 /* 2 or 3: need to correct nested folds too */ |
| 1559 foldMarkAdjustRecurse(&fp->fd_nested, line1 - fp->fd_top, | |
| 1560 line2 - fp->fd_top, amount, amount_after); | |
| 7 | 1561 if (last <= line2) |
| 1562 { | |
| 1563 /* 2. fold contains line1, line2 is below fold */ | |
| 1564 if (amount == MAXLNUM) | |
| 1565 fp->fd_len = line1 - fp->fd_top; | |
| 1566 else | |
| 1567 fp->fd_len += amount; | |
| 1568 } | |
| 1569 else | |
| 1570 { | |
| 1571 /* 3. fold contains line1 and line2 */ | |
| 1572 fp->fd_len += amount_after; | |
| 1573 } | |
| 1574 } | |
| 1575 else | |
| 1576 { | |
| 1964 | 1577 /* 5. fold is below line1 and contains line2; need to |
| 1578 * correct nested folds too */ | |
| 1579 foldMarkAdjustRecurse(&fp->fd_nested, line1 - fp->fd_top, | |
| 1580 line2 - fp->fd_top, amount, | |
| 1581 amount_after + (fp->fd_top - top)); | |
| 7 | 1582 if (amount == MAXLNUM) |
| 1583 { | |
| 1584 fp->fd_len -= line2 - fp->fd_top + 1; | |
| 1585 fp->fd_top = line1; | |
| 1586 } | |
| 1587 else | |
| 1588 { | |
| 1589 fp->fd_len += amount_after - amount; | |
| 1590 fp->fd_top += amount; | |
| 1591 } | |
| 1592 } | |
| 1593 } | |
| 1594 } | |
| 1595 } | |
| 1596 } | |
| 1597 | |
| 1598 /* getDeepestNesting() {{{2 */ | |
| 1599 /* | |
| 1600 * Get the lowest 'foldlevel' value that makes the deepest nested fold in the | |
| 1601 * current window open. | |
| 1602 */ | |
| 1603 int | |
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1604 getDeepestNesting(void) |
| 7 | 1605 { |
| 1606 checkupdate(curwin); | |
| 1607 return getDeepestNestingRecurse(&curwin->w_folds); | |
| 1608 } | |
| 1609 | |
| 1610 static int | |
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1611 getDeepestNestingRecurse(garray_T *gap) |
| 7 | 1612 { |
| 1613 int i; | |
| 1614 int level; | |
| 1615 int maxlevel = 0; | |
| 1616 fold_T *fp; | |
| 1617 | |
| 1618 fp = (fold_T *)gap->ga_data; | |
| 1619 for (i = 0; i < gap->ga_len; ++i) | |
| 1620 { | |
| 1621 level = getDeepestNestingRecurse(&fp[i].fd_nested) + 1; | |
| 1622 if (level > maxlevel) | |
| 1623 maxlevel = level; | |
| 1624 } | |
| 1625 | |
| 1626 return maxlevel; | |
| 1627 } | |
| 1628 | |
| 1629 /* check_closed() {{{2 */ | |
| 1630 /* | |
| 1631 * Check if a fold is closed and update the info needed to check nested folds. | |
| 1632 */ | |
| 1633 static int | |
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1634 check_closed( |
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1635 win_T *win, |
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1636 fold_T *fp, |
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1637 int *use_levelp, /* TRUE: outer fold had FD_LEVEL */ |
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1638 int level, /* folding depth */ |
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1639 int *maybe_smallp, /* TRUE: outer this had fd_small == MAYBE */ |
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1640 linenr_T lnum_off) /* line number offset for fp->fd_top */ |
| 7 | 1641 { |
| 1642 int closed = FALSE; | |
| 1643 | |
| 1644 /* Check if this fold is closed. If the flag is FD_LEVEL this | |
| 1645 * fold and all folds it contains depend on 'foldlevel'. */ | |
| 1646 if (*use_levelp || fp->fd_flags == FD_LEVEL) | |
| 1647 { | |
| 1648 *use_levelp = TRUE; | |
| 1649 if (level >= win->w_p_fdl) | |
| 1650 closed = TRUE; | |
| 1651 } | |
| 1652 else if (fp->fd_flags == FD_CLOSED) | |
| 1653 closed = TRUE; | |
| 1654 | |
| 1655 /* Small fold isn't closed anyway. */ | |
| 1656 if (fp->fd_small == MAYBE) | |
| 1657 *maybe_smallp = TRUE; | |
| 1658 if (closed) | |
| 1659 { | |
| 1660 if (*maybe_smallp) | |
| 1661 fp->fd_small = MAYBE; | |
| 1662 checkSmall(win, fp, lnum_off); | |
| 1663 if (fp->fd_small == TRUE) | |
| 1664 closed = FALSE; | |
| 1665 } | |
| 1666 return closed; | |
| 1667 } | |
| 1668 | |
| 1669 /* checkSmall() {{{2 */ | |
| 1670 /* | |
| 1671 * Update fd_small field of fold "fp". | |
| 1672 */ | |
| 1673 static void | |
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1674 checkSmall( |
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1675 win_T *wp, |
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1676 fold_T *fp, |
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1677 linenr_T lnum_off) /* offset for fp->fd_top */ |
| 7 | 1678 { |
| 1679 int count; | |
| 1680 int n; | |
| 1681 | |
| 1682 if (fp->fd_small == MAYBE) | |
| 1683 { | |
| 1684 /* Mark any nested folds to maybe-small */ | |
| 1685 setSmallMaybe(&fp->fd_nested); | |
| 1686 | |
| 1687 if (fp->fd_len > curwin->w_p_fml) | |
| 1688 fp->fd_small = FALSE; | |
| 1689 else | |
| 1690 { | |
| 1691 count = 0; | |
| 1692 for (n = 0; n < fp->fd_len; ++n) | |
| 1693 { | |
| 1694 count += plines_win_nofold(wp, fp->fd_top + lnum_off + n); | |
| 1695 if (count > curwin->w_p_fml) | |
| 1696 { | |
| 1697 fp->fd_small = FALSE; | |
| 1698 return; | |
| 1699 } | |
| 1700 } | |
| 1701 fp->fd_small = TRUE; | |
| 1702 } | |
| 1703 } | |
| 1704 } | |
| 1705 | |
| 1706 /* setSmallMaybe() {{{2 */ | |
| 1707 /* | |
| 1708 * Set small flags in "gap" to MAYBE. | |
| 1709 */ | |
| 1710 static void | |
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1711 setSmallMaybe(garray_T *gap) |
| 7 | 1712 { |
| 1713 int i; | |
| 1714 fold_T *fp; | |
| 1715 | |
| 1716 fp = (fold_T *)gap->ga_data; | |
| 1717 for (i = 0; i < gap->ga_len; ++i) | |
| 1718 fp[i].fd_small = MAYBE; | |
| 1719 } | |
| 1720 | |
| 1721 /* foldCreateMarkers() {{{2 */ | |
| 1722 /* | |
| 1723 * Create a fold from line "start" to line "end" (inclusive) in the current | |
| 1724 * window by adding markers. | |
| 1725 */ | |
| 1726 static void | |
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1727 foldCreateMarkers(linenr_T start, linenr_T end) |
| 7 | 1728 { |
| 1729 if (!curbuf->b_p_ma) | |
| 1730 { | |
| 1731 EMSG(_(e_modifiable)); | |
| 1732 return; | |
| 1733 } | |
| 1734 parseMarker(curwin); | |
| 1735 | |
| 1736 foldAddMarker(start, curwin->w_p_fmr, foldstartmarkerlen); | |
| 1737 foldAddMarker(end, foldendmarker, foldendmarkerlen); | |
| 1738 | |
| 1739 /* Update both changes here, to avoid all folds after the start are | |
| 1740 * changed when the start marker is inserted and the end isn't. */ | |
| 1741 changed_lines(start, (colnr_T)0, end, 0L); | |
| 1742 } | |
| 1743 | |
| 1744 /* foldAddMarker() {{{2 */ | |
| 1745 /* | |
| 1746 * Add "marker[markerlen]" in 'commentstring' to line "lnum". | |
| 1747 */ | |
| 1748 static void | |
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1749 foldAddMarker(linenr_T lnum, char_u *marker, int markerlen) |
| 7 | 1750 { |
| 1751 char_u *cms = curbuf->b_p_cms; | |
| 1752 char_u *line; | |
| 1753 int line_len; | |
| 1754 char_u *newline; | |
| 1755 char_u *p = (char_u *)strstr((char *)curbuf->b_p_cms, "%s"); | |
| 1756 | |
| 1757 /* Allocate a new line: old-line + 'cms'-start + marker + 'cms'-end */ | |
| 1758 line = ml_get(lnum); | |
| 1759 line_len = (int)STRLEN(line); | |
| 1760 | |
| 1761 if (u_save(lnum - 1, lnum + 1) == OK) | |
| 1762 { | |
| 1763 newline = alloc((unsigned)(line_len + markerlen + STRLEN(cms) + 1)); | |
| 1764 if (newline == NULL) | |
| 1765 return; | |
| 1766 STRCPY(newline, line); | |
| 1767 if (p == NULL) | |
| 419 | 1768 vim_strncpy(newline + line_len, marker, markerlen); |
| 7 | 1769 else |
| 1770 { | |
| 1771 STRCPY(newline + line_len, cms); | |
| 1772 STRNCPY(newline + line_len + (p - cms), marker, markerlen); | |
| 1773 STRCPY(newline + line_len + (p - cms) + markerlen, p + 2); | |
| 1774 } | |
| 1775 | |
| 1776 ml_replace(lnum, newline, FALSE); | |
| 1777 } | |
| 1778 } | |
| 1779 | |
| 1780 /* deleteFoldMarkers() {{{2 */ | |
| 1781 /* | |
| 1782 * Delete the markers for a fold, causing it to be deleted. | |
| 1783 */ | |
| 1784 static void | |
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1785 deleteFoldMarkers( |
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1786 fold_T *fp, |
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1787 int recursive, |
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1788 linenr_T lnum_off) /* offset for fp->fd_top */ |
| 7 | 1789 { |
| 1790 int i; | |
| 1791 | |
| 1792 if (recursive) | |
| 1793 for (i = 0; i < fp->fd_nested.ga_len; ++i) | |
| 1794 deleteFoldMarkers((fold_T *)fp->fd_nested.ga_data + i, TRUE, | |
| 1795 lnum_off + fp->fd_top); | |
| 1796 foldDelMarker(fp->fd_top + lnum_off, curwin->w_p_fmr, foldstartmarkerlen); | |
| 1797 foldDelMarker(fp->fd_top + lnum_off + fp->fd_len - 1, | |
| 1798 foldendmarker, foldendmarkerlen); | |
| 1799 } | |
| 1800 | |
| 1801 /* foldDelMarker() {{{2 */ | |
| 1802 /* | |
| 1803 * Delete marker "marker[markerlen]" at the end of line "lnum". | |
| 1804 * Delete 'commentstring' if it matches. | |
| 1805 * If the marker is not found, there is no error message. Could a missing | |
| 1806 * close-marker. | |
| 1807 */ | |
| 1808 static void | |
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1809 foldDelMarker(linenr_T lnum, char_u *marker, int markerlen) |
| 7 | 1810 { |
| 1811 char_u *line; | |
| 1812 char_u *newline; | |
| 1813 char_u *p; | |
| 1814 int len; | |
| 1815 char_u *cms = curbuf->b_p_cms; | |
| 1816 char_u *cms2; | |
| 1817 | |
| 1818 line = ml_get(lnum); | |
| 1819 for (p = line; *p != NUL; ++p) | |
| 1820 if (STRNCMP(p, marker, markerlen) == 0) | |
| 1821 { | |
| 1822 /* Found the marker, include a digit if it's there. */ | |
| 1823 len = markerlen; | |
| 1824 if (VIM_ISDIGIT(p[len])) | |
| 1825 ++len; | |
| 1826 if (*cms != NUL) | |
| 1827 { | |
| 1828 /* Also delete 'commentstring' if it matches. */ | |
| 1829 cms2 = (char_u *)strstr((char *)cms, "%s"); | |
| 1830 if (p - line >= cms2 - cms | |
| 1831 && STRNCMP(p - (cms2 - cms), cms, cms2 - cms) == 0 | |
| 1832 && STRNCMP(p + len, cms2 + 2, STRLEN(cms2 + 2)) == 0) | |
| 1833 { | |
| 1834 p -= cms2 - cms; | |
| 1835 len += (int)STRLEN(cms) - 2; | |
| 1836 } | |
| 1837 } | |
| 1838 if (u_save(lnum - 1, lnum + 1) == OK) | |
| 1839 { | |
| 1840 /* Make new line: text-before-marker + text-after-marker */ | |
| 1841 newline = alloc((unsigned)(STRLEN(line) - len + 1)); | |
| 1842 if (newline != NULL) | |
| 1843 { | |
| 1844 STRNCPY(newline, line, p - line); | |
| 1845 STRCPY(newline + (p - line), p + len); | |
| 1846 ml_replace(lnum, newline, FALSE); | |
| 1847 } | |
| 1848 } | |
| 1849 break; | |
| 1850 } | |
| 1851 } | |
| 1852 | |
| 29 | 1853 /* get_foldtext() {{{2 */ |
| 1854 /* | |
| 1855 * Return the text for a closed fold at line "lnum", with last line "lnume". | |
| 1856 * When 'foldtext' isn't set puts the result in "buf[51]". Otherwise the | |
| 1857 * result is in allocated memory. | |
| 1858 */ | |
| 1859 char_u * | |
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1860 get_foldtext( |
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1861 win_T *wp, |
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1862 linenr_T lnum, |
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1863 linenr_T lnume, |
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1864 foldinfo_T *foldinfo, |
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1865 char_u *buf) |
| 29 | 1866 { |
| 1867 char_u *text = NULL; | |
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1868 #ifdef FEAT_EVAL |
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1869 /* an error occurred when evaluating 'fdt' setting */ |
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1870 static int got_fdt_error = FALSE; |
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1871 int save_did_emsg = did_emsg; |
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1872 static win_T *last_wp = NULL; |
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1873 static linenr_T last_lnum = 0; |
| 29 | 1874 |
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1875 if (last_wp != wp || last_wp == NULL |
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1876 || last_lnum > lnum || last_lnum == 0) |
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1877 /* window changed, try evaluating foldtext setting once again */ |
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1878 got_fdt_error = FALSE; |
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1879 |
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1880 if (!got_fdt_error) |
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1881 /* a previous error should not abort evaluating 'foldexpr' */ |
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1882 did_emsg = FALSE; |
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1883 |
| 29 | 1884 if (*wp->w_p_fdt != NUL) |
| 1885 { | |
| 1981 | 1886 char_u dashes[MAX_LEVEL + 2]; |
| 29 | 1887 win_T *save_curwin; |
| 1888 int level; | |
| 1889 char_u *p; | |
| 1890 | |
| 1891 /* Set "v:foldstart" and "v:foldend". */ | |
| 1892 set_vim_var_nr(VV_FOLDSTART, lnum); | |
| 1893 set_vim_var_nr(VV_FOLDEND, lnume); | |
| 1894 | |
| 1895 /* Set "v:folddashes" to a string of "level" dashes. */ | |
| 1896 /* Set "v:foldlevel" to "level". */ | |
| 1897 level = foldinfo->fi_level; | |
| 1981 | 1898 if (level > (int)sizeof(dashes) - 1) |
| 1899 level = (int)sizeof(dashes) - 1; | |
| 29 | 1900 vim_memset(dashes, '-', (size_t)level); |
| 1901 dashes[level] = NUL; | |
| 1902 set_vim_var_string(VV_FOLDDASHES, dashes, -1); | |
| 1903 set_vim_var_nr(VV_FOLDLEVEL, (long)level); | |
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1904 |
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1905 /* skip evaluating foldtext on errors */ |
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1906 if (!got_fdt_error) |
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1907 { |
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1908 save_curwin = curwin; |
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1909 curwin = wp; |
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1910 curbuf = wp->w_buffer; |
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1911 |
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1912 ++emsg_silent; /* handle exceptions, but don't display errors */ |
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1913 text = eval_to_string_safe(wp->w_p_fdt, NULL, |
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1914 was_set_insecurely((char_u *)"foldtext", OPT_LOCAL)); |
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1915 --emsg_silent; |
| 29 | 1916 |
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1917 if (text == NULL || did_emsg) |
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1918 got_fdt_error = TRUE; |
| 29 | 1919 |
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1920 curwin = save_curwin; |
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1921 curbuf = curwin->w_buffer; |
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1922 } |
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1923 last_lnum = lnum; |
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1924 last_wp = wp; |
| 29 | 1925 set_vim_var_string(VV_FOLDDASHES, NULL, -1); |
| 1926 | |
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1927 if (!did_emsg && save_did_emsg) |
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1928 did_emsg = save_did_emsg; |
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1929 |
| 29 | 1930 if (text != NULL) |
| 1931 { | |
| 1932 /* Replace unprintable characters, if there are any. But | |
| 1933 * replace a TAB with a space. */ | |
| 1934 for (p = text; *p != NUL; ++p) | |
| 1935 { | |
| 1936 # ifdef FEAT_MBYTE | |
| 33 | 1937 int len; |
| 1938 | |
| 474 | 1939 if (has_mbyte && (len = (*mb_ptr2len)(p)) > 1) |
| 29 | 1940 { |
| 1941 if (!vim_isprintc((*mb_ptr2char)(p))) | |
| 1942 break; | |
| 1943 p += len - 1; | |
| 1944 } | |
| 1945 else | |
| 1946 # endif | |
| 1947 if (*p == TAB) | |
| 1948 *p = ' '; | |
| 1949 else if (ptr2cells(p) > 1) | |
| 1950 break; | |
| 1951 } | |
| 1952 if (*p != NUL) | |
| 1953 { | |
| 1954 p = transstr(text); | |
| 1955 vim_free(text); | |
| 1956 text = p; | |
| 1957 } | |
| 1958 } | |
| 1959 } | |
| 1960 if (text == NULL) | |
| 1961 #endif | |
| 1962 { | |
| 1963 sprintf((char *)buf, _("+--%3ld lines folded "), | |
| 1964 (long)(lnume - lnum + 1)); | |
| 1965 text = buf; | |
| 1966 } | |
| 1967 return text; | |
| 1968 } | |
| 1969 | |
| 7 | 1970 /* foldtext_cleanup() {{{2 */ |
| 1971 /* | |
| 1972 * Remove 'foldmarker' and 'commentstring' from "str" (in-place). | |
| 1973 */ | |
| 1974 void | |
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1975 foldtext_cleanup(char_u *str) |
| 7 | 1976 { |
| 1977 char_u *cms_start; /* first part or the whole comment */ | |
| 1978 int cms_slen = 0; /* length of cms_start */ | |
| 1979 char_u *cms_end; /* last part of the comment or NULL */ | |
| 1980 int cms_elen = 0; /* length of cms_end */ | |
| 1981 char_u *s; | |
| 45 | 1982 char_u *p; |
| 7 | 1983 int len; |
| 1984 int did1 = FALSE; | |
| 1985 int did2 = FALSE; | |
| 1986 | |
| 1987 /* Ignore leading and trailing white space in 'commentstring'. */ | |
| 1988 cms_start = skipwhite(curbuf->b_p_cms); | |
| 835 | 1989 cms_slen = (int)STRLEN(cms_start); |
| 7 | 1990 while (cms_slen > 0 && vim_iswhite(cms_start[cms_slen - 1])) |
| 1991 --cms_slen; | |
| 1992 | |
| 1993 /* locate "%s" in 'commentstring', use the part before and after it. */ | |
| 1994 cms_end = (char_u *)strstr((char *)cms_start, "%s"); | |
| 1995 if (cms_end != NULL) | |
| 1996 { | |
| 835 | 1997 cms_elen = cms_slen - (int)(cms_end - cms_start); |
| 1998 cms_slen = (int)(cms_end - cms_start); | |
| 7 | 1999 |
| 2000 /* exclude white space before "%s" */ | |
| 2001 while (cms_slen > 0 && vim_iswhite(cms_start[cms_slen - 1])) | |
| 2002 --cms_slen; | |
| 2003 | |
| 2004 /* skip "%s" and white space after it */ | |
| 2005 s = skipwhite(cms_end + 2); | |
| 835 | 2006 cms_elen -= (int)(s - cms_end); |
| 7 | 2007 cms_end = s; |
| 2008 } | |
| 2009 parseMarker(curwin); | |
| 2010 | |
| 2011 for (s = str; *s != NUL; ) | |
| 2012 { | |
| 2013 len = 0; | |
| 2014 if (STRNCMP(s, curwin->w_p_fmr, foldstartmarkerlen) == 0) | |
| 45 | 2015 len = foldstartmarkerlen; |
| 2016 else if (STRNCMP(s, foldendmarker, foldendmarkerlen) == 0) | |
| 2017 len = foldendmarkerlen; | |
| 2018 if (len > 0) | |
| 7 | 2019 { |
| 2020 if (VIM_ISDIGIT(s[len])) | |
| 2021 ++len; | |
| 45 | 2022 |
| 2023 /* May remove 'commentstring' start. Useful when it's a double | |
| 2024 * quote and we already removed a double quote. */ | |
| 2025 for (p = s; p > str && vim_iswhite(p[-1]); --p) | |
| 2026 ; | |
| 2027 if (p >= str + cms_slen | |
| 2028 && STRNCMP(p - cms_slen, cms_start, cms_slen) == 0) | |
| 2029 { | |
| 835 | 2030 len += (int)(s - p) + cms_slen; |
| 45 | 2031 s = p - cms_slen; |
| 2032 } | |
| 7 | 2033 } |
| 2034 else if (cms_end != NULL) | |
| 2035 { | |
| 45 | 2036 if (!did1 && cms_slen > 0 && STRNCMP(s, cms_start, cms_slen) == 0) |
| 7 | 2037 { |
| 2038 len = cms_slen; | |
| 2039 did1 = TRUE; | |
| 2040 } | |
| 45 | 2041 else if (!did2 && cms_elen > 0 |
| 2042 && STRNCMP(s, cms_end, cms_elen) == 0) | |
| 7 | 2043 { |
| 2044 len = cms_elen; | |
| 2045 did2 = TRUE; | |
| 2046 } | |
| 2047 } | |
| 2048 if (len != 0) | |
| 2049 { | |
| 2050 while (vim_iswhite(s[len])) | |
| 2051 ++len; | |
| 1624 | 2052 STRMOVE(s, s + len); |
| 7 | 2053 } |
| 2054 else | |
| 2055 { | |
| 39 | 2056 mb_ptr_adv(s); |
| 7 | 2057 } |
| 2058 } | |
| 2059 } | |
| 2060 | |
| 2061 /* Folding by indent, expr, marker and syntax. {{{1 */ | |
| 2062 /* Define "fline_T", passed to get fold level for a line. {{{2 */ | |
| 2063 typedef struct | |
| 2064 { | |
| 2065 win_T *wp; /* window */ | |
| 2066 linenr_T lnum; /* current line number */ | |
| 2067 linenr_T off; /* offset between lnum and real line number */ | |
| 2068 linenr_T lnum_save; /* line nr used by foldUpdateIEMSRecurse() */ | |
| 2069 int lvl; /* current level (-1 for undefined) */ | |
| 2070 int lvl_next; /* level used for next line */ | |
| 2071 int start; /* number of folds that are forced to start at | |
| 2072 this line. */ | |
| 2073 int end; /* level of fold that is forced to end below | |
| 2074 this line */ | |
| 2075 int had_end; /* level of fold that is forced to end above | |
| 2076 this line (copy of "end" of prev. line) */ | |
| 2077 } fline_T; | |
| 2078 | |
| 2079 /* Flag is set when redrawing is needed. */ | |
| 2080 static int fold_changed; | |
| 2081 | |
| 2082 /* Function declarations. {{{2 */ | |
|
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2083 static linenr_T foldUpdateIEMSRecurse(garray_T *gap, int level, linenr_T startlnum, fline_T *flp, void (*getlevel)(fline_T *), linenr_T bot, int topflags); |
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2084 static int foldInsert(garray_T *gap, int i); |
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2085 static void foldSplit(garray_T *gap, int i, linenr_T top, linenr_T bot); |
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2086 static void foldRemove(garray_T *gap, linenr_T top, linenr_T bot); |
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2087 static void foldMerge(fold_T *fp1, garray_T *gap, fold_T *fp2); |
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2088 static void foldlevelIndent(fline_T *flp); |
| 7 | 2089 #ifdef FEAT_DIFF |
|
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2090 static void foldlevelDiff(fline_T *flp); |
| 7 | 2091 #endif |
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2092 static void foldlevelExpr(fline_T *flp); |
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2093 static void foldlevelMarker(fline_T *flp); |
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|
2094 static void foldlevelSyntax(fline_T *flp); |
| 7 | 2095 |
| 2096 /* foldUpdateIEMS() {{{2 */ | |
| 2097 /* | |
| 2098 * Update the folding for window "wp", at least from lines "top" to "bot". | |
| 2099 * Return TRUE if any folds did change. | |
| 2100 */ | |
| 2101 static void | |
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|
2102 foldUpdateIEMS(win_T *wp, linenr_T top, linenr_T bot) |
| 7 | 2103 { |
| 2104 linenr_T start; | |
| 2105 linenr_T end; | |
| 2106 fline_T fline; | |
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|
2107 void (*getlevel)(fline_T *); |
| 7 | 2108 int level; |
| 2109 fold_T *fp; | |
| 2110 | |
| 2111 /* Avoid problems when being called recursively. */ | |
| 2112 if (invalid_top != (linenr_T)0) | |
| 2113 return; | |
| 2114 | |
| 2115 if (wp->w_foldinvalid) | |
| 2116 { | |
| 2117 /* Need to update all folds. */ | |
| 2118 top = 1; | |
| 2119 bot = wp->w_buffer->b_ml.ml_line_count; | |
| 2120 wp->w_foldinvalid = FALSE; | |
| 2121 | |
| 2122 /* Mark all folds a maybe-small. */ | |
| 2123 setSmallMaybe(&wp->w_folds); | |
| 2124 } | |
| 2125 | |
| 2126 #ifdef FEAT_DIFF | |
| 2127 /* add the context for "diff" folding */ | |
| 2128 if (foldmethodIsDiff(wp)) | |
| 2129 { | |
| 2130 if (top > diff_context) | |
| 2131 top -= diff_context; | |
| 2132 else | |
| 2133 top = 1; | |
| 2134 bot += diff_context; | |
| 2135 } | |
| 2136 #endif | |
| 2137 | |
| 2138 /* When deleting lines at the end of the buffer "top" can be past the end | |
| 2139 * of the buffer. */ | |
| 2140 if (top > wp->w_buffer->b_ml.ml_line_count) | |
| 2141 top = wp->w_buffer->b_ml.ml_line_count; | |
| 2142 | |
| 2143 fold_changed = FALSE; | |
| 2144 fline.wp = wp; | |
| 2145 fline.off = 0; | |
| 2146 fline.lvl = 0; | |
| 2147 fline.lvl_next = -1; | |
| 2148 fline.start = 0; | |
| 2149 fline.end = MAX_LEVEL + 1; | |
| 2150 fline.had_end = MAX_LEVEL + 1; | |
| 2151 | |
| 2152 invalid_top = top; | |
| 2153 invalid_bot = bot; | |
| 2154 | |
| 2155 if (foldmethodIsMarker(wp)) | |
| 2156 { | |
| 2157 getlevel = foldlevelMarker; | |
| 2158 | |
| 2159 /* Init marker variables to speed up foldlevelMarker(). */ | |
| 2160 parseMarker(wp); | |
| 2161 | |
| 2162 /* Need to get the level of the line above top, it is used if there is | |
| 2163 * no marker at the top. */ | |
| 2164 if (top > 1) | |
| 2165 { | |
| 2166 /* Get the fold level at top - 1. */ | |
| 2167 level = foldLevelWin(wp, top - 1); | |
| 2168 | |
| 2169 /* The fold may end just above the top, check for that. */ | |
| 2170 fline.lnum = top - 1; | |
| 2171 fline.lvl = level; | |
| 2172 getlevel(&fline); | |
| 2173 | |
| 2174 /* If a fold started here, we already had the level, if it stops | |
| 2175 * here, we need to use lvl_next. Could also start and end a fold | |
| 2176 * in the same line. */ | |
| 2177 if (fline.lvl > level) | |
| 2178 fline.lvl = level - (fline.lvl - fline.lvl_next); | |
| 2179 else | |
| 2180 fline.lvl = fline.lvl_next; | |
| 2181 } | |
| 2182 fline.lnum = top; | |
| 2183 getlevel(&fline); | |
| 2184 } | |
| 2185 else | |
| 2186 { | |
| 2187 fline.lnum = top; | |
| 2188 if (foldmethodIsExpr(wp)) | |
| 2189 { | |
| 2190 getlevel = foldlevelExpr; | |
| 2191 /* start one line back, because a "<1" may indicate the end of a | |
| 2192 * fold in the topline */ | |
| 2193 if (top > 1) | |
| 2194 --fline.lnum; | |
| 2195 } | |
| 2196 else if (foldmethodIsSyntax(wp)) | |
| 2197 getlevel = foldlevelSyntax; | |
| 2198 #ifdef FEAT_DIFF | |
| 2199 else if (foldmethodIsDiff(wp)) | |
| 2200 getlevel = foldlevelDiff; | |
| 2201 #endif | |
| 2202 else | |
| 2203 getlevel = foldlevelIndent; | |
| 2204 | |
| 2205 /* Backup to a line for which the fold level is defined. Since it's | |
| 2206 * always defined for line one, we will stop there. */ | |
| 2207 fline.lvl = -1; | |
| 2208 for ( ; !got_int; --fline.lnum) | |
| 2209 { | |
| 2210 /* Reset lvl_next each time, because it will be set to a value for | |
| 2211 * the next line, but we search backwards here. */ | |
| 2212 fline.lvl_next = -1; | |
| 2213 getlevel(&fline); | |
| 2214 if (fline.lvl >= 0) | |
| 2215 break; | |
| 2216 } | |
| 2217 } | |
| 2218 | |
| 1977 | 2219 /* |
| 2220 * If folding is defined by the syntax, it is possible that a change in | |
| 2221 * one line will cause all sub-folds of the current fold to change (e.g., | |
| 2222 * closing a C-style comment can cause folds in the subsequent lines to | |
| 2223 * appear). To take that into account we should adjust the value of "bot" | |
| 2224 * to point to the end of the current fold: | |
| 2225 */ | |
| 2226 if (foldlevelSyntax == getlevel) | |
| 2227 { | |
| 2228 garray_T *gap = &wp->w_folds; | |
|
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|
2229 fold_T *fpn = NULL; |
| 1977 | 2230 int current_fdl = 0; |
| 2231 linenr_T fold_start_lnum = 0; | |
| 2232 linenr_T lnum_rel = fline.lnum; | |
| 2233 | |
| 2234 while (current_fdl < fline.lvl) | |
| 2235 { | |
|
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|
2236 if (!foldFind(gap, lnum_rel, &fpn)) |
| 1977 | 2237 break; |
| 2238 ++current_fdl; | |
| 2239 | |
|
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|
2240 fold_start_lnum += fpn->fd_top; |
|
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2241 gap = &fpn->fd_nested; |
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|
2242 lnum_rel -= fpn->fd_top; |
| 1977 | 2243 } |
|
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2244 if (fpn != NULL && current_fdl == fline.lvl) |
| 1977 | 2245 { |
|
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2246 linenr_T fold_end_lnum = fold_start_lnum + fpn->fd_len; |
| 1977 | 2247 |
| 2248 if (fold_end_lnum > bot) | |
| 2249 bot = fold_end_lnum; | |
| 2250 } | |
| 2251 } | |
| 2252 | |
| 7 | 2253 start = fline.lnum; |
| 2254 end = bot; | |
| 2255 /* Do at least one line. */ | |
| 2256 if (start > end && end < wp->w_buffer->b_ml.ml_line_count) | |
| 2257 end = start; | |
| 2258 while (!got_int) | |
| 2259 { | |
| 2260 /* Always stop at the end of the file ("end" can be past the end of | |
| 2261 * the file). */ | |
| 2262 if (fline.lnum > wp->w_buffer->b_ml.ml_line_count) | |
| 2263 break; | |
| 2264 if (fline.lnum > end) | |
| 2265 { | |
| 2266 /* For "marker", "expr" and "syntax" methods: If a change caused | |
| 2267 * a fold to be removed, we need to continue at least until where | |
| 2268 * it ended. */ | |
| 2269 if (getlevel != foldlevelMarker | |
| 2270 && getlevel != foldlevelSyntax | |
| 2271 && getlevel != foldlevelExpr) | |
| 2272 break; | |
| 2273 if ((start <= end | |
| 2274 && foldFind(&wp->w_folds, end, &fp) | |
| 2275 && fp->fd_top + fp->fd_len - 1 > end) | |
| 2276 || (fline.lvl == 0 | |
| 2277 && foldFind(&wp->w_folds, fline.lnum, &fp) | |
| 2278 && fp->fd_top < fline.lnum)) | |
| 2279 end = fp->fd_top + fp->fd_len - 1; | |
| 2280 else if (getlevel == foldlevelSyntax | |
| 2281 && foldLevelWin(wp, fline.lnum) != fline.lvl) | |
| 2282 /* For "syntax" method: Compare the foldlevel that the syntax | |
| 2283 * tells us to the foldlevel from the existing folds. If they | |
| 2284 * don't match continue updating folds. */ | |
| 2285 end = fline.lnum; | |
| 2286 else | |
| 2287 break; | |
| 2288 } | |
| 2289 | |
| 2290 /* A level 1 fold starts at a line with foldlevel > 0. */ | |
| 2291 if (fline.lvl > 0) | |
| 2292 { | |
| 2293 invalid_top = fline.lnum; | |
| 2294 invalid_bot = end; | |
| 2295 end = foldUpdateIEMSRecurse(&wp->w_folds, | |
| 2296 1, start, &fline, getlevel, end, FD_LEVEL); | |
| 2297 start = fline.lnum; | |
| 2298 } | |
| 2299 else | |
| 2300 { | |
| 2301 if (fline.lnum == wp->w_buffer->b_ml.ml_line_count) | |
| 2302 break; | |
| 2303 ++fline.lnum; | |
| 2304 fline.lvl = fline.lvl_next; | |
| 2305 getlevel(&fline); | |
| 2306 } | |
| 2307 } | |
| 2308 | |
| 2309 /* There can't be any folds from start until end now. */ | |
| 2310 foldRemove(&wp->w_folds, start, end); | |
| 2311 | |
| 2312 /* If some fold changed, need to redraw and position cursor. */ | |
| 2313 if (fold_changed && wp->w_p_fen) | |
| 1554 | 2314 changed_window_setting_win(wp); |
| 7 | 2315 |
| 2316 /* If we updated folds past "bot", need to redraw more lines. Don't do | |
| 2317 * this in other situations, the changed lines will be redrawn anyway and | |
| 2318 * this method can cause the whole window to be updated. */ | |
| 2319 if (end != bot) | |
| 2320 { | |
| 2321 if (wp->w_redraw_top == 0 || wp->w_redraw_top > top) | |
| 2322 wp->w_redraw_top = top; | |
| 2323 if (wp->w_redraw_bot < end) | |
| 2324 wp->w_redraw_bot = end; | |
| 2325 } | |
| 2326 | |
| 2327 invalid_top = (linenr_T)0; | |
| 2328 } | |
| 2329 | |
| 2330 /* foldUpdateIEMSRecurse() {{{2 */ | |
| 2331 /* | |
| 2332 * Update a fold that starts at "flp->lnum". At this line there is always a | |
| 2333 * valid foldlevel, and its level >= "level". | |
| 2334 * "flp" is valid for "flp->lnum" when called and it's valid when returning. | |
| 2335 * "flp->lnum" is set to the lnum just below the fold, if it ends before | |
| 2336 * "bot", it's "bot" plus one if the fold continues and it's bigger when using | |
| 2337 * the marker method and a text change made following folds to change. | |
| 2338 * When returning, "flp->lnum_save" is the line number that was used to get | |
| 2339 * the level when the level at "flp->lnum" is invalid. | |
| 2340 * Remove any folds from "startlnum" up to here at this level. | |
| 2341 * Recursively update nested folds. | |
| 2342 * Below line "bot" there are no changes in the text. | |
| 2343 * "flp->lnum", "flp->lnum_save" and "bot" are relative to the start of the | |
| 2344 * outer fold. | |
| 2345 * "flp->off" is the offset to the real line number in the buffer. | |
| 2346 * | |
| 2347 * All this would be a lot simpler if all folds in the range would be deleted | |
| 1698 | 2348 * and then created again. But we would lose all information about the |
| 7 | 2349 * folds, even when making changes that don't affect the folding (e.g. "vj~"). |
| 2350 * | |
| 2351 * Returns bot, which may have been increased for lines that also need to be | |
| 2352 * updated as a result of a detected change in the fold. | |
| 2353 */ | |
| 2354 static linenr_T | |
|
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changeset
|
2355 foldUpdateIEMSRecurse( |
|
81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
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parents:
7807
diff
changeset
|
2356 garray_T *gap, |
|
81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2357 int level, |
|
81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2358 linenr_T startlnum, |
|
81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2359 fline_T *flp, |
|
81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2360 void (*getlevel)(fline_T *), |
|
81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2361 linenr_T bot, |
|
81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2362 int topflags) /* flags used by containing fold */ |
| 7 | 2363 { |
| 2364 linenr_T ll; | |
| 2365 fold_T *fp = NULL; | |
| 2366 fold_T *fp2; | |
| 2367 int lvl = level; | |
| 2368 linenr_T startlnum2 = startlnum; | |
| 2369 linenr_T firstlnum = flp->lnum; /* first lnum we got */ | |
| 2370 int i; | |
| 2371 int finish = FALSE; | |
| 2372 linenr_T linecount = flp->wp->w_buffer->b_ml.ml_line_count - flp->off; | |
| 2373 int concat; | |
| 2374 | |
| 2375 /* | |
| 2376 * If using the marker method, the start line is not the start of a fold | |
| 2377 * at the level we're dealing with and the level is non-zero, we must use | |
| 2378 * the previous fold. But ignore a fold that starts at or below | |
| 2379 * startlnum, it must be deleted. | |
| 2380 */ | |
| 2381 if (getlevel == foldlevelMarker && flp->start <= flp->lvl - level | |
| 2382 && flp->lvl > 0) | |
| 2383 { | |
| 7009 | 2384 (void)foldFind(gap, startlnum - 1, &fp); |
| 7 | 2385 if (fp >= ((fold_T *)gap->ga_data) + gap->ga_len |
| 2386 || fp->fd_top >= startlnum) | |
| 2387 fp = NULL; | |
| 2388 } | |
| 2389 | |
| 2390 /* | |
| 2391 * Loop over all lines in this fold, or until "bot" is hit. | |
| 2392 * Handle nested folds inside of this fold. | |
| 2393 * "flp->lnum" is the current line. When finding the end of the fold, it | |
| 2394 * is just below the end of the fold. | |
| 2395 * "*flp" contains the level of the line "flp->lnum" or a following one if | |
| 2396 * there are lines with an invalid fold level. "flp->lnum_save" is the | |
| 2397 * line number that was used to get the fold level (below "flp->lnum" when | |
| 2398 * it has an invalid fold level). When called the fold level is always | |
| 2399 * valid, thus "flp->lnum_save" is equal to "flp->lnum". | |
| 2400 */ | |
| 2401 flp->lnum_save = flp->lnum; | |
| 2402 while (!got_int) | |
| 2403 { | |
| 2404 /* Updating folds can be slow, check for CTRL-C. */ | |
| 2405 line_breakcheck(); | |
| 2406 | |
| 2407 /* Set "lvl" to the level of line "flp->lnum". When flp->start is set | |
| 2408 * and after the first line of the fold, set the level to zero to | |
| 2409 * force the fold to end. Do the same when had_end is set: Previous | |
| 2410 * line was marked as end of a fold. */ | |
| 2411 lvl = flp->lvl; | |
| 2412 if (lvl > MAX_LEVEL) | |
| 2413 lvl = MAX_LEVEL; | |
| 2414 if (flp->lnum > firstlnum | |
| 2415 && (level > lvl - flp->start || level >= flp->had_end)) | |
| 2416 lvl = 0; | |
| 2417 | |
| 2418 if (flp->lnum > bot && !finish && fp != NULL) | |
| 2419 { | |
| 2420 /* For "marker" and "syntax" methods: | |
| 2421 * - If a change caused a nested fold to be removed, we need to | |
| 2422 * delete it and continue at least until where it ended. | |
| 2423 * - If a change caused a nested fold to be created, or this fold | |
| 2424 * to continue below its original end, need to finish this fold. | |
| 2425 */ | |
| 2426 if (getlevel != foldlevelMarker | |
| 2427 && getlevel != foldlevelExpr | |
| 2428 && getlevel != foldlevelSyntax) | |
| 2429 break; | |
| 2430 i = 0; | |
| 2431 fp2 = fp; | |
| 2432 if (lvl >= level) | |
| 2433 { | |
| 2434 /* Compute how deep the folds currently are, if it's deeper | |
| 2435 * than "lvl" then some must be deleted, need to update | |
| 2436 * at least one nested fold. */ | |
| 2437 ll = flp->lnum - fp->fd_top; | |
| 2438 while (foldFind(&fp2->fd_nested, ll, &fp2)) | |
| 2439 { | |
| 2440 ++i; | |
| 2441 ll -= fp2->fd_top; | |
| 2442 } | |
| 2443 } | |
| 2444 if (lvl < level + i) | |
| 2445 { | |
| 7009 | 2446 (void)foldFind(&fp->fd_nested, flp->lnum - fp->fd_top, &fp2); |
| 7 | 2447 if (fp2 != NULL) |
| 2448 bot = fp2->fd_top + fp2->fd_len - 1 + fp->fd_top; | |
| 2449 } | |
| 2450 else if (fp->fd_top + fp->fd_len <= flp->lnum && lvl >= level) | |
| 2451 finish = TRUE; | |
| 2452 else | |
| 2453 break; | |
| 2454 } | |
| 2455 | |
| 2456 /* At the start of the first nested fold and at the end of the current | |
| 2457 * fold: check if existing folds at this level, before the current | |
| 2458 * one, need to be deleted or truncated. */ | |
| 2459 if (fp == NULL | |
| 2460 && (lvl != level | |
| 2461 || flp->lnum_save >= bot | |
| 2462 || flp->start != 0 | |
| 2463 || flp->had_end <= MAX_LEVEL | |
| 2464 || flp->lnum == linecount)) | |
| 2465 { | |
| 2466 /* | |
| 2467 * Remove or update folds that have lines between startlnum and | |
| 2468 * firstlnum. | |
| 2469 */ | |
| 2470 while (!got_int) | |
| 2471 { | |
| 2472 /* set concat to 1 if it's allowed to concatenated this fold | |
| 2473 * with a previous one that touches it. */ | |
| 2474 if (flp->start != 0 || flp->had_end <= MAX_LEVEL) | |
| 2475 concat = 0; | |
| 2476 else | |
| 2477 concat = 1; | |
| 2478 | |
| 2479 /* Find an existing fold to re-use. Preferably one that | |
| 2480 * includes startlnum, otherwise one that ends just before | |
| 2481 * startlnum or starts after it. */ | |
| 2482 if (foldFind(gap, startlnum, &fp) | |
| 2483 || (fp < ((fold_T *)gap->ga_data) + gap->ga_len | |
| 2484 && fp->fd_top <= firstlnum) | |
| 2485 || foldFind(gap, firstlnum - concat, &fp) | |
| 2486 || (fp < ((fold_T *)gap->ga_data) + gap->ga_len | |
| 2487 && ((lvl < level && fp->fd_top < flp->lnum) | |
| 2488 || (lvl >= level | |
| 2489 && fp->fd_top <= flp->lnum_save)))) | |
| 2490 { | |
| 2491 if (fp->fd_top + fp->fd_len + concat > firstlnum) | |
| 2492 { | |
| 2493 /* Use existing fold for the new fold. If it starts | |
| 2494 * before where we started looking, extend it. If it | |
| 2495 * starts at another line, update nested folds to keep | |
| 2496 * their position, compensating for the new fd_top. */ | |
| 2497 if (fp->fd_top >= startlnum && fp->fd_top != firstlnum) | |
| 2498 { | |
| 2499 if (fp->fd_top > firstlnum) | |
| 2500 /* like lines are inserted */ | |
| 2501 foldMarkAdjustRecurse(&fp->fd_nested, | |
| 2502 (linenr_T)0, (linenr_T)MAXLNUM, | |
| 2503 (long)(fp->fd_top - firstlnum), 0L); | |
| 2504 else | |
| 2505 /* like lines are deleted */ | |
| 2506 foldMarkAdjustRecurse(&fp->fd_nested, | |
| 2507 (linenr_T)0, | |
| 2508 (long)(firstlnum - fp->fd_top - 1), | |
| 2509 (linenr_T)MAXLNUM, | |
| 2510 (long)(fp->fd_top - firstlnum)); | |
| 2511 fp->fd_len += fp->fd_top - firstlnum; | |
| 2512 fp->fd_top = firstlnum; | |
| 2513 fold_changed = TRUE; | |
| 2514 } | |
| 2515 else if (flp->start != 0 && lvl == level | |
| 2516 && fp->fd_top != firstlnum) | |
| 2517 { | |
| 2518 /* Existing fold that includes startlnum must stop | |
| 2519 * if we find the start of a new fold at the same | |
| 2520 * level. Split it. Delete contained folds at | |
| 2521 * this point to split them too. */ | |
| 2522 foldRemove(&fp->fd_nested, flp->lnum - fp->fd_top, | |
| 2523 flp->lnum - fp->fd_top); | |
| 2524 i = (int)(fp - (fold_T *)gap->ga_data); | |
| 2525 foldSplit(gap, i, flp->lnum, flp->lnum - 1); | |
| 2526 fp = (fold_T *)gap->ga_data + i + 1; | |
| 2527 /* If using the "marker" or "syntax" method, we | |
| 2528 * need to continue until the end of the fold is | |
| 2529 * found. */ | |
| 2530 if (getlevel == foldlevelMarker | |
| 2531 || getlevel == foldlevelExpr | |
| 2532 || getlevel == foldlevelSyntax) | |
| 2533 finish = TRUE; | |
| 2534 } | |
| 2535 break; | |
| 2536 } | |
| 2537 if (fp->fd_top >= startlnum) | |
| 2538 { | |
| 2539 /* A fold that starts at or after startlnum and stops | |
| 2540 * before the new fold must be deleted. Continue | |
| 2541 * looking for the next one. */ | |
| 2542 deleteFoldEntry(gap, | |
| 2543 (int)(fp - (fold_T *)gap->ga_data), TRUE); | |
| 2544 } | |
| 2545 else | |
| 2546 { | |
| 2547 /* A fold has some lines above startlnum, truncate it | |
| 2548 * to stop just above startlnum. */ | |
| 2549 fp->fd_len = startlnum - fp->fd_top; | |
| 2550 foldMarkAdjustRecurse(&fp->fd_nested, | |
| 2551 (linenr_T)fp->fd_len, (linenr_T)MAXLNUM, | |
| 2552 (linenr_T)MAXLNUM, 0L); | |
| 2553 fold_changed = TRUE; | |
| 2554 } | |
| 2555 } | |
| 2556 else | |
| 2557 { | |
| 2558 /* Insert new fold. Careful: ga_data may be NULL and it | |
| 2559 * may change! */ | |
| 2560 i = (int)(fp - (fold_T *)gap->ga_data); | |
| 2561 if (foldInsert(gap, i) != OK) | |
| 2562 return bot; | |
| 2563 fp = (fold_T *)gap->ga_data + i; | |
| 2564 /* The new fold continues until bot, unless we find the | |
| 2565 * end earlier. */ | |
| 2566 fp->fd_top = firstlnum; | |
| 2567 fp->fd_len = bot - firstlnum + 1; | |
| 2568 /* When the containing fold is open, the new fold is open. | |
| 2569 * The new fold is closed if the fold above it is closed. | |
| 2570 * The first fold depends on the containing fold. */ | |
| 2571 if (topflags == FD_OPEN) | |
| 2572 { | |
| 2573 flp->wp->w_fold_manual = TRUE; | |
| 2574 fp->fd_flags = FD_OPEN; | |
| 2575 } | |
| 2576 else if (i <= 0) | |
| 2577 { | |
| 2578 fp->fd_flags = topflags; | |
| 2579 if (topflags != FD_LEVEL) | |
| 2580 flp->wp->w_fold_manual = TRUE; | |
| 2581 } | |
| 2582 else | |
| 2583 fp->fd_flags = (fp - 1)->fd_flags; | |
| 2584 fp->fd_small = MAYBE; | |
| 2585 /* If using the "marker", "expr" or "syntax" method, we | |
| 2586 * need to continue until the end of the fold is found. */ | |
| 2587 if (getlevel == foldlevelMarker | |
| 2588 || getlevel == foldlevelExpr | |
| 2589 || getlevel == foldlevelSyntax) | |
| 2590 finish = TRUE; | |
| 2591 fold_changed = TRUE; | |
| 2592 break; | |
| 2593 } | |
| 2594 } | |
| 2595 } | |
| 2596 | |
| 2597 if (lvl < level || flp->lnum > linecount) | |
| 2598 { | |
| 2599 /* | |
| 2600 * Found a line with a lower foldlevel, this fold ends just above | |
| 2601 * "flp->lnum". | |
| 2602 */ | |
| 2603 break; | |
| 2604 } | |
| 2605 | |
| 2606 /* | |
| 2607 * The fold includes the line "flp->lnum" and "flp->lnum_save". | |
| 840 | 2608 * Check "fp" for safety. |
| 7 | 2609 */ |
| 840 | 2610 if (lvl > level && fp != NULL) |
| 7 | 2611 { |
| 2612 /* | |
| 2613 * There is a nested fold, handle it recursively. | |
| 2614 */ | |
| 2615 /* At least do one line (can happen when finish is TRUE). */ | |
| 2616 if (bot < flp->lnum) | |
| 2617 bot = flp->lnum; | |
| 2618 | |
| 2619 /* Line numbers in the nested fold are relative to the start of | |
| 2620 * this fold. */ | |
| 2621 flp->lnum = flp->lnum_save - fp->fd_top; | |
| 2622 flp->off += fp->fd_top; | |
| 2623 i = (int)(fp - (fold_T *)gap->ga_data); | |
| 2624 bot = foldUpdateIEMSRecurse(&fp->fd_nested, level + 1, | |
| 2625 startlnum2 - fp->fd_top, flp, getlevel, | |
| 2626 bot - fp->fd_top, fp->fd_flags); | |
| 2627 fp = (fold_T *)gap->ga_data + i; | |
| 2628 flp->lnum += fp->fd_top; | |
| 2629 flp->lnum_save += fp->fd_top; | |
| 2630 flp->off -= fp->fd_top; | |
| 2631 bot += fp->fd_top; | |
| 2632 startlnum2 = flp->lnum; | |
| 2633 | |
| 2634 /* This fold may end at the same line, don't incr. flp->lnum. */ | |
| 2635 } | |
| 2636 else | |
| 2637 { | |
| 2638 /* | |
| 2639 * Get the level of the next line, then continue the loop to check | |
| 2640 * if it ends there. | |
| 2641 * Skip over undefined lines, to find the foldlevel after it. | |
| 2642 * For the last line in the file the foldlevel is always valid. | |
| 2643 */ | |
| 2644 flp->lnum = flp->lnum_save; | |
| 2645 ll = flp->lnum + 1; | |
| 2646 while (!got_int) | |
| 2647 { | |
| 2648 /* Make the previous level available to foldlevel(). */ | |
| 2649 prev_lnum = flp->lnum; | |
| 2650 prev_lnum_lvl = flp->lvl; | |
| 2651 | |
| 2652 if (++flp->lnum > linecount) | |
| 2653 break; | |
| 2654 flp->lvl = flp->lvl_next; | |
| 2655 getlevel(flp); | |
| 2656 if (flp->lvl >= 0 || flp->had_end <= MAX_LEVEL) | |
| 2657 break; | |
| 2658 } | |
| 2659 prev_lnum = 0; | |
| 2660 if (flp->lnum > linecount) | |
| 2661 break; | |
| 2662 | |
| 2663 /* leave flp->lnum_save to lnum of the line that was used to get | |
| 2664 * the level, flp->lnum to the lnum of the next line. */ | |
| 2665 flp->lnum_save = flp->lnum; | |
| 2666 flp->lnum = ll; | |
| 2667 } | |
| 2668 } | |
| 2669 | |
| 2670 if (fp == NULL) /* only happens when got_int is set */ | |
| 2671 return bot; | |
| 2672 | |
| 2673 /* | |
| 2674 * Get here when: | |
| 2675 * lvl < level: the folds ends just above "flp->lnum" | |
| 2676 * lvl >= level: fold continues below "bot" | |
| 2677 */ | |
| 2678 | |
| 2679 /* Current fold at least extends until lnum. */ | |
| 2680 if (fp->fd_len < flp->lnum - fp->fd_top) | |
| 2681 { | |
| 2682 fp->fd_len = flp->lnum - fp->fd_top; | |
| 1513 | 2683 fp->fd_small = MAYBE; |
| 7 | 2684 fold_changed = TRUE; |
| 2685 } | |
| 2686 | |
| 2687 /* Delete contained folds from the end of the last one found until where | |
| 2688 * we stopped looking. */ | |
| 2689 foldRemove(&fp->fd_nested, startlnum2 - fp->fd_top, | |
| 2690 flp->lnum - 1 - fp->fd_top); | |
| 2691 | |
| 2692 if (lvl < level) | |
| 2693 { | |
| 2694 /* End of fold found, update the length when it got shorter. */ | |
| 2695 if (fp->fd_len != flp->lnum - fp->fd_top) | |
| 2696 { | |
| 2697 if (fp->fd_top + fp->fd_len > bot + 1) | |
| 2698 { | |
| 1224 | 2699 /* fold continued below bot */ |
| 7 | 2700 if (getlevel == foldlevelMarker |
| 2701 || getlevel == foldlevelExpr | |
| 2702 || getlevel == foldlevelSyntax) | |
| 2703 { | |
| 2704 /* marker method: truncate the fold and make sure the | |
| 2705 * previously included lines are processed again */ | |
| 2706 bot = fp->fd_top + fp->fd_len - 1; | |
| 2707 fp->fd_len = flp->lnum - fp->fd_top; | |
| 2708 } | |
| 2709 else | |
| 2710 { | |
| 2711 /* indent or expr method: split fold to create a new one | |
| 2712 * below bot */ | |
| 2713 i = (int)(fp - (fold_T *)gap->ga_data); | |
| 2714 foldSplit(gap, i, flp->lnum, bot); | |
| 2715 fp = (fold_T *)gap->ga_data + i; | |
| 2716 } | |
| 2717 } | |
| 2718 else | |
| 2719 fp->fd_len = flp->lnum - fp->fd_top; | |
| 2720 fold_changed = TRUE; | |
| 2721 } | |
| 2722 } | |
| 2723 | |
| 2724 /* delete following folds that end before the current line */ | |
| 2725 for (;;) | |
| 2726 { | |
| 2727 fp2 = fp + 1; | |
| 2728 if (fp2 >= (fold_T *)gap->ga_data + gap->ga_len | |
| 2729 || fp2->fd_top > flp->lnum) | |
| 2730 break; | |
| 2731 if (fp2->fd_top + fp2->fd_len > flp->lnum) | |
| 2732 { | |
| 2733 if (fp2->fd_top < flp->lnum) | |
| 2734 { | |
| 2735 /* Make fold that includes lnum start at lnum. */ | |
| 2736 foldMarkAdjustRecurse(&fp2->fd_nested, | |
| 2737 (linenr_T)0, (long)(flp->lnum - fp2->fd_top - 1), | |
| 2738 (linenr_T)MAXLNUM, (long)(fp2->fd_top - flp->lnum)); | |
| 2739 fp2->fd_len -= flp->lnum - fp2->fd_top; | |
| 2740 fp2->fd_top = flp->lnum; | |
| 2741 fold_changed = TRUE; | |
| 2742 } | |
| 2743 | |
| 2744 if (lvl >= level) | |
| 2745 { | |
| 2746 /* merge new fold with existing fold that follows */ | |
| 2747 foldMerge(fp, gap, fp2); | |
| 2748 } | |
| 2749 break; | |
| 2750 } | |
| 2751 fold_changed = TRUE; | |
| 2752 deleteFoldEntry(gap, (int)(fp2 - (fold_T *)gap->ga_data), TRUE); | |
| 2753 } | |
| 2754 | |
| 2755 /* Need to redraw the lines we inspected, which might be further down than | |
| 2756 * was asked for. */ | |
| 2757 if (bot < flp->lnum - 1) | |
| 2758 bot = flp->lnum - 1; | |
| 2759 | |
| 2760 return bot; | |
| 2761 } | |
| 2762 | |
| 2763 /* foldInsert() {{{2 */ | |
| 2764 /* | |
| 2765 * Insert a new fold in "gap" at position "i". | |
| 2766 * Returns OK for success, FAIL for failure. | |
| 2767 */ | |
| 2768 static int | |
|
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commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
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parents:
7807
diff
changeset
|
2769 foldInsert(garray_T *gap, int i) |
| 7 | 2770 { |
| 2771 fold_T *fp; | |
| 2772 | |
| 2773 if (ga_grow(gap, 1) != OK) | |
| 2774 return FAIL; | |
| 2775 fp = (fold_T *)gap->ga_data + i; | |
| 2776 if (i < gap->ga_len) | |
| 2777 mch_memmove(fp + 1, fp, sizeof(fold_T) * (gap->ga_len - i)); | |
| 2778 ++gap->ga_len; | |
| 2779 ga_init2(&fp->fd_nested, (int)sizeof(fold_T), 10); | |
| 2780 return OK; | |
| 2781 } | |
| 2782 | |
| 2783 /* foldSplit() {{{2 */ | |
| 2784 /* | |
| 2785 * Split the "i"th fold in "gap", which starts before "top" and ends below | |
| 2786 * "bot" in two pieces, one ending above "top" and the other starting below | |
| 2787 * "bot". | |
| 2788 * The caller must first have taken care of any nested folds from "top" to | |
| 2789 * "bot"! | |
| 2790 */ | |
| 2791 static void | |
|
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81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2792 foldSplit( |
|
81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2793 garray_T *gap, |
|
81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2794 int i, |
|
81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2795 linenr_T top, |
|
81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2796 linenr_T bot) |
| 7 | 2797 { |
| 2798 fold_T *fp; | |
| 2799 fold_T *fp2; | |
| 2800 garray_T *gap1; | |
| 2801 garray_T *gap2; | |
| 2802 int idx; | |
| 2803 int len; | |
| 2804 | |
| 2805 /* The fold continues below bot, need to split it. */ | |
| 2806 if (foldInsert(gap, i + 1) == FAIL) | |
| 2807 return; | |
| 2808 fp = (fold_T *)gap->ga_data + i; | |
| 2809 fp[1].fd_top = bot + 1; | |
| 2810 fp[1].fd_len = fp->fd_len - (fp[1].fd_top - fp->fd_top); | |
| 2811 fp[1].fd_flags = fp->fd_flags; | |
| 1985 | 2812 fp[1].fd_small = MAYBE; |
| 2813 fp->fd_small = MAYBE; | |
| 7 | 2814 |
| 2815 /* Move nested folds below bot to new fold. There can't be | |
| 2816 * any between top and bot, they have been removed by the caller. */ | |
| 2817 gap1 = &fp->fd_nested; | |
| 2818 gap2 = &fp[1].fd_nested; | |
| 2819 (void)(foldFind(gap1, bot + 1 - fp->fd_top, &fp2)); | |
| 2820 len = (int)((fold_T *)gap1->ga_data + gap1->ga_len - fp2); | |
| 2821 if (len > 0 && ga_grow(gap2, len) == OK) | |
| 2822 { | |
| 2823 for (idx = 0; idx < len; ++idx) | |
| 2824 { | |
| 2825 ((fold_T *)gap2->ga_data)[idx] = fp2[idx]; | |
| 2826 ((fold_T *)gap2->ga_data)[idx].fd_top | |
| 2827 -= fp[1].fd_top - fp->fd_top; | |
| 2828 } | |
| 2829 gap2->ga_len = len; | |
| 2830 gap1->ga_len -= len; | |
| 2831 } | |
| 2832 fp->fd_len = top - fp->fd_top; | |
| 2833 fold_changed = TRUE; | |
| 2834 } | |
| 2835 | |
| 2836 /* foldRemove() {{{2 */ | |
| 2837 /* | |
| 2838 * Remove folds within the range "top" to and including "bot". | |
| 2839 * Check for these situations: | |
| 2840 * 1 2 3 | |
| 2841 * 1 2 3 | |
| 2842 * top 2 3 4 5 | |
| 2843 * 2 3 4 5 | |
| 2844 * bot 2 3 4 5 | |
| 2845 * 3 5 6 | |
| 2846 * 3 5 6 | |
| 2847 * | |
| 2848 * 1: not changed | |
| 1224 | 2849 * 2: truncate to stop above "top" |
| 7 | 2850 * 3: split in two parts, one stops above "top", other starts below "bot". |
| 2851 * 4: deleted | |
| 2852 * 5: made to start below "bot". | |
| 2853 * 6: not changed | |
| 2854 */ | |
| 2855 static void | |
|
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commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2856 foldRemove(garray_T *gap, linenr_T top, linenr_T bot) |
| 7 | 2857 { |
| 2858 fold_T *fp = NULL; | |
| 2859 | |
| 2860 if (bot < top) | |
| 2861 return; /* nothing to do */ | |
| 2862 | |
| 2863 for (;;) | |
| 2864 { | |
| 2865 /* Find fold that includes top or a following one. */ | |
| 2866 if (foldFind(gap, top, &fp) && fp->fd_top < top) | |
| 2867 { | |
| 2868 /* 2: or 3: need to delete nested folds */ | |
| 2869 foldRemove(&fp->fd_nested, top - fp->fd_top, bot - fp->fd_top); | |
| 2870 if (fp->fd_top + fp->fd_len > bot + 1) | |
| 2871 { | |
| 2872 /* 3: need to split it. */ | |
| 2873 foldSplit(gap, (int)(fp - (fold_T *)gap->ga_data), top, bot); | |
| 2874 } | |
| 2875 else | |
| 2876 { | |
| 2877 /* 2: truncate fold at "top". */ | |
| 2878 fp->fd_len = top - fp->fd_top; | |
| 2879 } | |
| 2880 fold_changed = TRUE; | |
| 2881 continue; | |
| 2882 } | |
| 2883 if (fp >= (fold_T *)(gap->ga_data) + gap->ga_len | |
| 2884 || fp->fd_top > bot) | |
| 2885 { | |
| 2886 /* 6: Found a fold below bot, can stop looking. */ | |
| 2887 break; | |
| 2888 } | |
| 2889 if (fp->fd_top >= top) | |
| 2890 { | |
| 2891 /* Found an entry below top. */ | |
| 2892 fold_changed = TRUE; | |
| 36 | 2893 if (fp->fd_top + fp->fd_len - 1 > bot) |
| 7 | 2894 { |
| 2895 /* 5: Make fold that includes bot start below bot. */ | |
| 2896 foldMarkAdjustRecurse(&fp->fd_nested, | |
| 2897 (linenr_T)0, (long)(bot - fp->fd_top), | |
| 2898 (linenr_T)MAXLNUM, (long)(fp->fd_top - bot - 1)); | |
| 2899 fp->fd_len -= bot - fp->fd_top + 1; | |
| 2900 fp->fd_top = bot + 1; | |
| 2901 break; | |
| 2902 } | |
| 2903 | |
| 2904 /* 4: Delete completely contained fold. */ | |
| 2905 deleteFoldEntry(gap, (int)(fp - (fold_T *)gap->ga_data), TRUE); | |
| 2906 } | |
| 2907 } | |
| 2908 } | |
| 2909 | |
| 2910 /* foldMerge() {{{2 */ | |
| 2911 /* | |
| 1224 | 2912 * Merge two adjacent folds (and the nested ones in them). |
| 2913 * This only works correctly when the folds are really adjacent! Thus "fp1" | |
| 7 | 2914 * must end just above "fp2". |
| 2915 * The resulting fold is "fp1", nested folds are moved from "fp2" to "fp1". | |
| 2916 * Fold entry "fp2" in "gap" is deleted. | |
| 2917 */ | |
| 2918 static void | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2919 foldMerge(fold_T *fp1, garray_T *gap, fold_T *fp2) |
| 7 | 2920 { |
| 2921 fold_T *fp3; | |
| 2922 fold_T *fp4; | |
| 2923 int idx; | |
| 2924 garray_T *gap1 = &fp1->fd_nested; | |
| 2925 garray_T *gap2 = &fp2->fd_nested; | |
| 2926 | |
| 2927 /* If the last nested fold in fp1 touches the first nested fold in fp2, | |
| 2928 * merge them recursively. */ | |
| 2929 if (foldFind(gap1, fp1->fd_len - 1L, &fp3) && foldFind(gap2, 0L, &fp4)) | |
| 2930 foldMerge(fp3, gap2, fp4); | |
| 2931 | |
| 2932 /* Move nested folds in fp2 to the end of fp1. */ | |
| 2933 if (gap2->ga_len > 0 && ga_grow(gap1, gap2->ga_len) == OK) | |
| 2934 { | |
| 2935 for (idx = 0; idx < gap2->ga_len; ++idx) | |
| 2936 { | |
| 2937 ((fold_T *)gap1->ga_data)[gap1->ga_len] | |
| 2938 = ((fold_T *)gap2->ga_data)[idx]; | |
| 2939 ((fold_T *)gap1->ga_data)[gap1->ga_len].fd_top += fp1->fd_len; | |
| 2940 ++gap1->ga_len; | |
| 2941 } | |
| 2942 gap2->ga_len = 0; | |
| 2943 } | |
| 2944 | |
| 2945 fp1->fd_len += fp2->fd_len; | |
| 2946 deleteFoldEntry(gap, (int)(fp2 - (fold_T *)gap->ga_data), TRUE); | |
| 2947 fold_changed = TRUE; | |
| 2948 } | |
| 2949 | |
| 2950 /* foldlevelIndent() {{{2 */ | |
| 2951 /* | |
| 2952 * Low level function to get the foldlevel for the "indent" method. | |
| 2953 * Doesn't use any caching. | |
| 2954 * Returns a level of -1 if the foldlevel depends on surrounding lines. | |
| 2955 */ | |
| 2956 static void | |
|
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commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2957 foldlevelIndent(fline_T *flp) |
| 7 | 2958 { |
| 2959 char_u *s; | |
| 2960 buf_T *buf; | |
| 2961 linenr_T lnum = flp->lnum + flp->off; | |
| 2962 | |
| 2963 buf = flp->wp->w_buffer; | |
| 2964 s = skipwhite(ml_get_buf(buf, lnum, FALSE)); | |
| 2965 | |
| 2966 /* empty line or lines starting with a character in 'foldignore': level | |
| 2967 * depends on surrounding lines */ | |
| 2968 if (*s == NUL || vim_strchr(flp->wp->w_p_fdi, *s) != NULL) | |
| 2969 { | |
| 2970 /* first and last line can't be undefined, use level 0 */ | |
| 2971 if (lnum == 1 || lnum == buf->b_ml.ml_line_count) | |
| 2972 flp->lvl = 0; | |
| 2973 else | |
| 2974 flp->lvl = -1; | |
| 2975 } | |
| 2976 else | |
| 5438 | 2977 flp->lvl = get_indent_buf(buf, lnum) / get_sw_value(curbuf); |
| 7 | 2978 if (flp->lvl > flp->wp->w_p_fdn) |
| 1028 | 2979 { |
| 7 | 2980 flp->lvl = flp->wp->w_p_fdn; |
| 1028 | 2981 if (flp->lvl < 0) |
| 2982 flp->lvl = 0; | |
| 2983 } | |
| 7 | 2984 } |
| 2985 | |
| 2986 /* foldlevelDiff() {{{2 */ | |
| 2987 #ifdef FEAT_DIFF | |
| 2988 /* | |
| 2989 * Low level function to get the foldlevel for the "diff" method. | |
| 2990 * Doesn't use any caching. | |
| 2991 */ | |
| 2992 static void | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2993 foldlevelDiff(fline_T *flp) |
| 7 | 2994 { |
| 2995 if (diff_infold(flp->wp, flp->lnum + flp->off)) | |
| 2996 flp->lvl = 1; | |
| 2997 else | |
| 2998 flp->lvl = 0; | |
| 2999 } | |
| 3000 #endif | |
| 3001 | |
| 3002 /* foldlevelExpr() {{{2 */ | |
| 3003 /* | |
| 3004 * Low level function to get the foldlevel for the "expr" method. | |
| 3005 * Doesn't use any caching. | |
| 3006 * Returns a level of -1 if the foldlevel depends on surrounding lines. | |
| 3007 */ | |
| 3008 static void | |
|
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commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
3009 foldlevelExpr(fline_T *flp) |
| 7 | 3010 { |
| 3011 #ifndef FEAT_EVAL | |
| 3012 flp->start = FALSE; | |
| 3013 flp->lvl = 0; | |
| 3014 #else | |
| 3015 win_T *win; | |
| 3016 int n; | |
| 3017 int c; | |
| 3018 linenr_T lnum = flp->lnum + flp->off; | |
| 3019 int save_keytyped; | |
| 3020 | |
| 3021 win = curwin; | |
| 3022 curwin = flp->wp; | |
| 3023 curbuf = flp->wp->w_buffer; | |
| 3024 set_vim_var_nr(VV_LNUM, lnum); | |
| 3025 | |
| 3026 flp->start = 0; | |
| 3027 flp->had_end = flp->end; | |
| 3028 flp->end = MAX_LEVEL + 1; | |
| 3029 if (lnum <= 1) | |
| 3030 flp->lvl = 0; | |
| 3031 | |
| 3032 /* KeyTyped may be reset to 0 when calling a function which invokes | |
| 3033 * do_cmdline(). To make 'foldopen' work correctly restore KeyTyped. */ | |
| 3034 save_keytyped = KeyTyped; | |
|
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commit https://github.com/vim/vim/commit/22fcfad29276bd5f317faf516637dcd491b96a12
Christian Brabandt <cb@256bit.org>
parents:
9252
diff
changeset
|
3035 n = (int)eval_foldexpr(flp->wp->w_p_fde, &c); |
| 7 | 3036 KeyTyped = save_keytyped; |
| 3037 | |
| 3038 switch (c) | |
| 3039 { | |
| 3040 /* "a1", "a2", .. : add to the fold level */ | |
| 3041 case 'a': if (flp->lvl >= 0) | |
| 3042 { | |
| 3043 flp->lvl += n; | |
| 3044 flp->lvl_next = flp->lvl; | |
| 3045 } | |
| 3046 flp->start = n; | |
| 3047 break; | |
| 3048 | |
| 3049 /* "s1", "s2", .. : subtract from the fold level */ | |
| 3050 case 's': if (flp->lvl >= 0) | |
| 3051 { | |
| 3052 if (n > flp->lvl) | |
| 3053 flp->lvl_next = 0; | |
| 3054 else | |
| 3055 flp->lvl_next = flp->lvl - n; | |
| 3056 flp->end = flp->lvl_next + 1; | |
| 3057 } | |
| 3058 break; | |
| 3059 | |
| 3060 /* ">1", ">2", .. : start a fold with a certain level */ | |
| 3061 case '>': flp->lvl = n; | |
| 3062 flp->lvl_next = n; | |
| 3063 flp->start = 1; | |
| 3064 break; | |
| 3065 | |
| 3066 /* "<1", "<2", .. : end a fold with a certain level */ | |
| 3067 case '<': flp->lvl_next = n - 1; | |
| 3068 flp->end = n; | |
| 3069 break; | |
| 3070 | |
| 3071 /* "=": No change in level */ | |
| 3072 case '=': flp->lvl_next = flp->lvl; | |
| 3073 break; | |
| 3074 | |
| 3075 /* "-1", "0", "1", ..: set fold level */ | |
| 3076 default: if (n < 0) | |
| 3077 /* Use the current level for the next line, so that "a1" | |
| 3078 * will work there. */ | |
| 3079 flp->lvl_next = flp->lvl; | |
| 3080 else | |
| 3081 flp->lvl_next = n; | |
| 3082 flp->lvl = n; | |
| 3083 break; | |
| 3084 } | |
| 3085 | |
| 3086 /* If the level is unknown for the first or the last line in the file, use | |
| 3087 * level 0. */ | |
| 3088 if (flp->lvl < 0) | |
| 3089 { | |
| 3090 if (lnum <= 1) | |
| 3091 { | |
| 3092 flp->lvl = 0; | |
| 3093 flp->lvl_next = 0; | |
| 3094 } | |
| 3095 if (lnum == curbuf->b_ml.ml_line_count) | |
| 3096 flp->lvl_next = 0; | |
| 3097 } | |
| 3098 | |
| 3099 curwin = win; | |
| 3100 curbuf = curwin->w_buffer; | |
| 3101 #endif | |
| 3102 } | |
| 3103 | |
| 3104 /* parseMarker() {{{2 */ | |
| 3105 /* | |
| 3106 * Parse 'foldmarker' and set "foldendmarker", "foldstartmarkerlen" and | |
| 3107 * "foldendmarkerlen". | |
| 3108 * Relies on the option value to have been checked for correctness already. | |
| 3109 */ | |
| 3110 static void | |
|
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commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
3111 parseMarker(win_T *wp) |
| 7 | 3112 { |
| 3113 foldendmarker = vim_strchr(wp->w_p_fmr, ','); | |
| 3114 foldstartmarkerlen = (int)(foldendmarker++ - wp->w_p_fmr); | |
| 3115 foldendmarkerlen = (int)STRLEN(foldendmarker); | |
| 3116 } | |
| 3117 | |
| 3118 /* foldlevelMarker() {{{2 */ | |
| 3119 /* | |
| 3120 * Low level function to get the foldlevel for the "marker" method. | |
| 3121 * "foldendmarker", "foldstartmarkerlen" and "foldendmarkerlen" must have been | |
| 3122 * set before calling this. | |
| 3123 * Requires that flp->lvl is set to the fold level of the previous line! | |
| 3124 * Careful: This means you can't call this function twice on the same line. | |
| 3125 * Doesn't use any caching. | |
| 3126 * Sets flp->start when a start marker was found. | |
| 3127 */ | |
| 3128 static void | |
|
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commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
3129 foldlevelMarker(fline_T *flp) |
| 7 | 3130 { |
| 3131 char_u *startmarker; | |
| 3132 int cstart; | |
| 3133 int cend; | |
| 3134 int start_lvl = flp->lvl; | |
| 3135 char_u *s; | |
| 3136 int n; | |
| 3137 | |
| 3138 /* cache a few values for speed */ | |
| 3139 startmarker = flp->wp->w_p_fmr; | |
| 3140 cstart = *startmarker; | |
| 3141 ++startmarker; | |
| 3142 cend = *foldendmarker; | |
| 3143 | |
| 3144 /* Default: no start found, next level is same as current level */ | |
| 3145 flp->start = 0; | |
| 3146 flp->lvl_next = flp->lvl; | |
| 3147 | |
| 3148 s = ml_get_buf(flp->wp->w_buffer, flp->lnum + flp->off, FALSE); | |
| 3149 while (*s) | |
| 3150 { | |
| 3151 if (*s == cstart | |
| 3152 && STRNCMP(s + 1, startmarker, foldstartmarkerlen - 1) == 0) | |
| 3153 { | |
| 3154 /* found startmarker: set flp->lvl */ | |
| 3155 s += foldstartmarkerlen; | |
| 3156 if (VIM_ISDIGIT(*s)) | |
| 3157 { | |
| 3158 n = atoi((char *)s); | |
| 3159 if (n > 0) | |
| 3160 { | |
| 3161 flp->lvl = n; | |
| 3162 flp->lvl_next = n; | |
| 3163 if (n <= start_lvl) | |
| 3164 flp->start = 1; | |
| 3165 else | |
| 3166 flp->start = n - start_lvl; | |
| 3167 } | |
| 3168 } | |
| 3169 else | |
| 3170 { | |
| 3171 ++flp->lvl; | |
| 3172 ++flp->lvl_next; | |
| 3173 ++flp->start; | |
| 3174 } | |
| 3175 } | |
| 3176 else if (*s == cend | |
| 3177 && STRNCMP(s + 1, foldendmarker + 1, foldendmarkerlen - 1) == 0) | |
| 3178 { | |
| 3179 /* found endmarker: set flp->lvl_next */ | |
| 3180 s += foldendmarkerlen; | |
| 3181 if (VIM_ISDIGIT(*s)) | |
| 3182 { | |
| 3183 n = atoi((char *)s); | |
| 3184 if (n > 0) | |
| 3185 { | |
| 3186 flp->lvl = n; | |
| 3187 flp->lvl_next = n - 1; | |
| 3188 /* never start a fold with an end marker */ | |
|
2054
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parents:
1985
diff
changeset
|
3189 if (flp->lvl_next > start_lvl) |
|
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Bram Moolenaar <bram@zimbu.org>
parents:
1985
diff
changeset
|
3190 flp->lvl_next = start_lvl; |
| 7 | 3191 } |
| 3192 } | |
| 3193 else | |
| 3194 --flp->lvl_next; | |
| 3195 } | |
| 3196 else | |
| 651 | 3197 mb_ptr_adv(s); |
| 7 | 3198 } |
| 3199 | |
| 3200 /* The level can't go negative, must be missing a start marker. */ | |
| 3201 if (flp->lvl_next < 0) | |
| 3202 flp->lvl_next = 0; | |
| 3203 } | |
| 3204 | |
| 3205 /* foldlevelSyntax() {{{2 */ | |
| 3206 /* | |
| 3207 * Low level function to get the foldlevel for the "syntax" method. | |
| 3208 * Doesn't use any caching. | |
| 3209 */ | |
| 3210 static void | |
|
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commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
3211 foldlevelSyntax(fline_T *flp) |
| 7 | 3212 { |
| 3213 #ifndef FEAT_SYN_HL | |
| 3214 flp->start = 0; | |
| 3215 flp->lvl = 0; | |
| 3216 #else | |
| 3217 linenr_T lnum = flp->lnum + flp->off; | |
| 3218 int n; | |
| 3219 | |
| 3220 /* Use the maximum fold level at the start of this line and the next. */ | |
| 3221 flp->lvl = syn_get_foldlevel(flp->wp, lnum); | |
| 3222 flp->start = 0; | |
| 3223 if (lnum < flp->wp->w_buffer->b_ml.ml_line_count) | |
| 3224 { | |
| 3225 n = syn_get_foldlevel(flp->wp, lnum + 1); | |
| 3226 if (n > flp->lvl) | |
| 3227 { | |
| 3228 flp->start = n - flp->lvl; /* fold(s) start here */ | |
| 3229 flp->lvl = n; | |
| 3230 } | |
| 3231 } | |
| 3232 #endif | |
| 3233 } | |
| 3234 | |
| 3235 /* functions for storing the fold state in a View {{{1 */ | |
| 3236 /* put_folds() {{{2 */ | |
| 3237 #if defined(FEAT_SESSION) || defined(PROTO) | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7009
diff
changeset
|
3238 static int put_folds_recurse(FILE *fd, garray_T *gap, linenr_T off); |
|
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commit https://github.com/vim/vim/commit/d25c16e2f2776d50245bf31d6e4d5364f12d188e
Christian Brabandt <cb@256bit.org>
parents:
7009
diff
changeset
|
3239 static int put_foldopen_recurse(FILE *fd, win_T *wp, garray_T *gap, linenr_T off); |
|
a1e71a01dbd6
commit https://github.com/vim/vim/commit/d25c16e2f2776d50245bf31d6e4d5364f12d188e
Christian Brabandt <cb@256bit.org>
parents:
7009
diff
changeset
|
3240 static int put_fold_open_close(FILE *fd, fold_T *fp, linenr_T off); |
| 7 | 3241 |
| 3242 /* | |
| 3243 * Write commands to "fd" to restore the manual folds in window "wp". | |
| 3244 * Return FAIL if writing fails. | |
| 3245 */ | |
| 3246 int | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
3247 put_folds(FILE *fd, win_T *wp) |
| 7 | 3248 { |
| 3249 if (foldmethodIsManual(wp)) | |
| 3250 { | |
| 3251 if (put_line(fd, "silent! normal! zE") == FAIL | |
| 3252 || put_folds_recurse(fd, &wp->w_folds, (linenr_T)0) == FAIL) | |
| 3253 return FAIL; | |
| 3254 } | |
| 3255 | |
| 3256 /* If some folds are manually opened/closed, need to restore that. */ | |
| 3257 if (wp->w_fold_manual) | |
| 3392 | 3258 return put_foldopen_recurse(fd, wp, &wp->w_folds, (linenr_T)0); |
| 7 | 3259 |
| 3260 return OK; | |
| 3261 } | |
| 3262 | |
| 3263 /* put_folds_recurse() {{{2 */ | |
| 3264 /* | |
| 3265 * Write commands to "fd" to recreate manually created folds. | |
| 3266 * Returns FAIL when writing failed. | |
| 3267 */ | |
| 3268 static int | |
|
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81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
3269 put_folds_recurse(FILE *fd, garray_T *gap, linenr_T off) |
| 7 | 3270 { |
| 3271 int i; | |
| 3272 fold_T *fp; | |
| 3273 | |
| 3274 fp = (fold_T *)gap->ga_data; | |
| 3275 for (i = 0; i < gap->ga_len; i++) | |
| 3276 { | |
| 3277 /* Do nested folds first, they will be created closed. */ | |
| 3278 if (put_folds_recurse(fd, &fp->fd_nested, off + fp->fd_top) == FAIL) | |
| 3279 return FAIL; | |
| 3280 if (fprintf(fd, "%ld,%ldfold", fp->fd_top + off, | |
| 3281 fp->fd_top + off + fp->fd_len - 1) < 0 | |
| 3282 || put_eol(fd) == FAIL) | |
| 3283 return FAIL; | |
| 3284 ++fp; | |
| 3285 } | |
| 3286 return OK; | |
| 3287 } | |
| 3288 | |
| 3289 /* put_foldopen_recurse() {{{2 */ | |
| 3290 /* | |
| 3291 * Write commands to "fd" to open and close manually opened/closed folds. | |
| 3292 * Returns FAIL when writing failed. | |
| 3293 */ | |
| 3294 static int | |
|
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81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
3295 put_foldopen_recurse( |
|
81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
3296 FILE *fd, |
|
81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
3297 win_T *wp, |
|
81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
3298 garray_T *gap, |
|
81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
3299 linenr_T off) |
| 7 | 3300 { |
| 3301 int i; | |
| 3392 | 3302 int level; |
| 7 | 3303 fold_T *fp; |
| 3304 | |
| 3305 fp = (fold_T *)gap->ga_data; | |
| 3306 for (i = 0; i < gap->ga_len; i++) | |
| 3307 { | |
| 3308 if (fp->fd_flags != FD_LEVEL) | |
| 3309 { | |
| 3310 if (fp->fd_nested.ga_len > 0) | |
| 3311 { | |
| 3392 | 3312 /* open nested folds while this fold is open */ |
| 7 | 3313 if (fprintf(fd, "%ld", fp->fd_top + off) < 0 |
| 3314 || put_eol(fd) == FAIL | |
| 3766 | 3315 || put_line(fd, "normal! zo") == FAIL) |
| 7 | 3316 return FAIL; |
| 3392 | 3317 if (put_foldopen_recurse(fd, wp, &fp->fd_nested, |
| 3318 off + fp->fd_top) | |
| 7 | 3319 == FAIL) |
| 3320 return FAIL; | |
| 3392 | 3321 /* close the parent when needed */ |
| 3322 if (fp->fd_flags == FD_CLOSED) | |
| 3323 { | |
| 3324 if (put_fold_open_close(fd, fp, off) == FAIL) | |
| 3325 return FAIL; | |
| 3326 } | |
| 3327 } | |
| 3328 else | |
| 3329 { | |
| 3330 /* Open or close the leaf according to the window foldlevel. | |
| 3331 * Do not close a leaf that is already closed, as it will close | |
| 3332 * the parent. */ | |
| 3333 level = foldLevelWin(wp, off + fp->fd_top); | |
| 3334 if ((fp->fd_flags == FD_CLOSED && wp->w_p_fdl >= level) | |
| 3335 || (fp->fd_flags != FD_CLOSED && wp->w_p_fdl < level)) | |
| 3336 if (put_fold_open_close(fd, fp, off) == FAIL) | |
| 3337 return FAIL; | |
| 7 | 3338 } |
| 3339 } | |
| 3340 ++fp; | |
| 3341 } | |
| 3342 | |
| 3343 return OK; | |
| 3344 } | |
| 3392 | 3345 |
| 3346 /* put_fold_open_close() {{{2 */ | |
| 3347 /* | |
| 3348 * Write the open or close command to "fd". | |
| 3349 * Returns FAIL when writing failed. | |
| 3350 */ | |
| 3351 static int | |
|
7821
81794242a275
commit https://github.com/vim/vim/commit/66f948e928d5e0cd3123af902aa8ac1613534c94
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
3352 put_fold_open_close(FILE *fd, fold_T *fp, linenr_T off) |
| 3392 | 3353 { |
| 3354 if (fprintf(fd, "%ld", fp->fd_top + off) < 0 | |
| 3355 || put_eol(fd) == FAIL | |
| 3766 | 3356 || fprintf(fd, "normal! z%c", |
| 3392 | 3357 fp->fd_flags == FD_CLOSED ? 'c' : 'o') < 0 |
| 3358 || put_eol(fd) == FAIL) | |
| 3359 return FAIL; | |
| 3360 | |
| 3361 return OK; | |
| 3362 } | |
| 7 | 3363 #endif /* FEAT_SESSION */ |
| 3364 | |
| 3365 /* }}}1 */ | |
| 3366 #endif /* defined(FEAT_FOLDING) || defined(PROTO) */ |