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API: Implement buffer updates

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Originally written by @phodge in
https://github.com/neovim/neovim/pull/5269.
This commit is contained in:
Peter Hodge
2018-01-26 20:36:11 +01:00
committed by KillTheMule
parent 418abfc9d0
commit edcc73e766
14 changed files with 371 additions and 49 deletions
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30
src/nvim/undo.c
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@@ -92,6 +92,7 @@
#include "nvim/eval.h"
#include "nvim/fileio.h"
#include "nvim/fold.h"
#include "nvim/liveupdate.h"
#include "nvim/mark.h"
#include "nvim/memline.h"
#include "nvim/message.h"
@@ -1672,7 +1673,7 @@ void u_undo(int count)
undo_undoes = TRUE;
else
undo_undoes = !undo_undoes;
u_doit(count, false);
u_doit(count, false, true);
}
/*
@@ -1685,7 +1686,7 @@ void u_redo(int count)
undo_undoes = false;
}
u_doit(count, false);
u_doit(count, false, true);
}
/// Undo and remove the branch from the undo tree.
@@ -1697,7 +1698,9 @@ bool u_undo_and_forget(int count)
count = 1;
}
undo_undoes = true;
u_doit(count, true);
// don't send a LiveUpdate for this undo is part of 'inccommand' playing with
// buffer contents
u_doit(count, true, false);
if (curbuf->b_u_curhead == NULL) {
// nothing was undone.
@@ -1732,7 +1735,7 @@ bool u_undo_and_forget(int count)
}
/// Undo or redo, depending on `undo_undoes`, `count` times.
static void u_doit(int startcount, bool quiet)
static void u_doit(int startcount, bool quiet, bool send_liveupdate)
{
int count = startcount;
@@ -1768,7 +1771,7 @@ static void u_doit(int startcount, bool quiet)
break;
}
u_undoredo(true);
u_undoredo(true, send_liveupdate);
} else {
if (curbuf->b_u_curhead == NULL || get_undolevel() <= 0) {
beep_flush(); /* nothing to redo */
@@ -1779,7 +1782,7 @@ static void u_doit(int startcount, bool quiet)
break;
}
u_undoredo(FALSE);
u_undoredo(false, send_liveupdate);
/* Advance for next redo. Set "newhead" when at the end of the
* redoable changes. */
@@ -2026,7 +2029,7 @@ void undo_time(long step, int sec, int file, int absolute)
|| (uhp->uh_seq == target && !above))
break;
curbuf->b_u_curhead = uhp;
u_undoredo(TRUE);
u_undoredo(true, true);
uhp->uh_walk = nomark; /* don't go back down here */
}
@@ -2082,7 +2085,7 @@ void undo_time(long step, int sec, int file, int absolute)
break;
}
u_undoredo(FALSE);
u_undoredo(false, true);
/* Advance "curhead" to below the header we last used. If it
* becomes NULL then we need to set "newhead" to this leaf. */
@@ -2114,7 +2117,7 @@ void undo_time(long step, int sec, int file, int absolute)
*
* When "undo" is TRUE we go up in the tree, when FALSE we go down.
*/
static void u_undoredo(int undo)
static void u_undoredo(int undo, bool send_liveupdate)
{
char_u **newarray = NULL;
linenr_T oldsize;
@@ -2242,7 +2245,7 @@ static void u_undoredo(int undo)
}
}
changed_lines(top + 1, 0, bot, newsize - oldsize);
changed_lines(top + 1, 0, bot, newsize - oldsize, send_liveupdate);
/* set '[ and '] mark */
if (top + 1 < curbuf->b_op_start.lnum)
@@ -2277,6 +2280,13 @@ static void u_undoredo(int undo)
unchanged(curbuf, FALSE);
}
// because the calls to changed()/unchanged() above will bump b_changedtick
// again, we need to send a LiveUpdate with just the new value of
// b:changedtick
if (send_liveupdate && kv_size(curbuf->liveupdate_channels)) {
liveupdate_send_tick(curbuf);
}
/*
* restore marks from before undo/redo
*/