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refactor(diff.c): factor out diffblock deletion

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This commit is contained in:
Lewis Russell 2022-10-24 16:45:26 +01:00
parent 6da2271a04
commit 49c2da432b
1 changed files with 18 additions and 21 deletions
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39
src/nvim/diff.c
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@ -462,9 +462,7 @@ static void diff_mark_adjust_tp(tabpage_T *tp, int idx, linenr_T line1, linenr_T
dprev->df_count[i] += dp->df_count[i];
}
}
dprev->df_next = dp->df_next;
xfree(dp);
dp = dprev->df_next;
dp = diff_free(tp, dprev, dp);
} else {
// Advance to next entry.
dprev = dp;
@ -485,15 +483,7 @@ static void diff_mark_adjust_tp(tabpage_T *tp, int idx, linenr_T line1, linenr_T
}
if (i == DB_COUNT) {
diff_T *dnext = dp->df_next;
xfree(dp);
dp = dnext;
if (dprev == NULL) {
tp->tp_first_diff = dnext;
} else {
dprev->df_next = dnext;
}
dp = diff_free(tp, dprev, dp);
} else {
// Advance to next entry.
dprev = dp;
@ -533,6 +523,20 @@ static diff_T *diff_alloc_new(tabpage_T *tp, diff_T *dprev, diff_T *dp)
return dnew;
}
static diff_T *diff_free(tabpage_T *tp, diff_T *dprev, diff_T *dp)
{
diff_T *ret = dp->df_next;
xfree(dp);
if (dprev == NULL) {
tp->tp_first_diff = ret;
} else {
dprev->df_next = ret;
}
return ret;
}
/// Check if the diff block "dp" can be made smaller for lines at the start and
/// end that are equal. Called after inserting lines.
///
@ -2777,13 +2781,6 @@ static void diffgetput(const int addr_count, const int idx_cur, const int idx_fr
if (i == DB_COUNT) {
// delete the diff entry, the buffers are now equal here
dfree = dp;
dp = dp->df_next;
if (dprev == NULL) {
curtab->tp_first_diff = dp;
} else {
dprev->df_next = dp;
}
}
}
@ -2802,10 +2799,10 @@ static void diffgetput(const int addr_count, const int idx_cur, const int idx_fr
}
changed_lines(lnum, 0, lnum + count, added, true);
if (dfree != NULL) {
if (dfree == dp) {
// Diff is deleted, update folds in other windows.
diff_fold_update(dfree, idx_to);
xfree(dfree);
dp = diff_free(curtab, dprev, dp);
}
// mark_adjust() may have made "dp" invalid. We don't know where