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xdiff/xhistogram: pass arguments directly to fall_back_to_classic_diff 

By passing the 'xpp' and 'env' argument directly to the function
'fall_back_to_classic_diff', we eliminate an occurrence of the 'index'
in histogram_diff, which will prove useful in a bit.

While at it, move it up in the file. This will make the diff of
one of the next patches more legible.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Stefan Beller 2018-07-19 11:56:18 -07:00 committed by Junio C Hamano
parent 27dea4683b
commit 282098506f
1 changed files with 11 additions and 11 deletions
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22
xdiff/xhistogram.c
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@ -233,6 +233,16 @@ static int try_lcs(struct histindex *index, struct region *lcs, int b_ptr,
return b_next;
}
static int fall_back_to_classic_diff(xpparam_t const *xpp, xdfenv_t *env,
int line1, int count1, int line2, int count2)
{
xpparam_t xpparam;
xpparam.flags = xpp->flags & ~XDF_DIFF_ALGORITHM_MASK;
return xdl_fall_back_diff(env, &xpparam,
line1, count1, line2, count2);
}
static int find_lcs(struct histindex *index, struct region *lcs,
int line1, int count1, int line2, int count2) {
int b_ptr;
@ -248,16 +258,6 @@ static int find_lcs(struct histindex *index, struct region *lcs,
return index->has_common && index->max_chain_length < index->cnt;
}
static int fall_back_to_classic_diff(struct histindex *index,
int line1, int count1, int line2, int count2)
{
xpparam_t xpp;
xpp.flags = index->xpp->flags & ~XDF_DIFF_ALGORITHM_MASK;
return xdl_fall_back_diff(index->env, &xpp,
line1, count1, line2, count2);
}
static int histogram_diff(xpparam_t const *xpp, xdfenv_t *env,
int line1, int count1, int line2, int count2)
{
@ -320,7 +320,7 @@ static int histogram_diff(xpparam_t const *xpp, xdfenv_t *env,
memset(&lcs, 0, sizeof(lcs));
if (find_lcs(&index, &lcs, line1, count1, line2, count2))
result = fall_back_to_classic_diff(&index, line1, count1, line2, count2);
result = fall_back_to_classic_diff(xpp, env, line1, count1, line2, count2);
else {
if (lcs.begin1 == 0 && lcs.begin2 == 0) {
while (count1--)