mirror of
https://github.com/git/git
synced 2024-10-30 03:39:13 +00:00
b4ff12c8ee
Similar to the preceding commit, let's carry over macros to allocate arrays with `REFTABLE_ALLOC_ARRAY()` and `REFTABLE_CALLOC_ARRAY()`. This requires us to change the signature of `reftable_calloc()`, which only takes a single argument right now and thus puts the burden on the caller to calculate the final array's size. This is a net improvement though as it means that we can now provide proper overflow checks when multiplying the array size with the member size. Convert callsites of `reftable_calloc()` to the new signature and start using the new macros where possible. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
63 lines
1.2 KiB
C
63 lines
1.2 KiB
C
/*
|
|
Copyright 2020 Google LLC
|
|
|
|
Use of this source code is governed by a BSD-style
|
|
license that can be found in the LICENSE file or at
|
|
https://developers.google.com/open-source/licenses/bsd
|
|
*/
|
|
|
|
#include "system.h"
|
|
#include "tree.h"
|
|
|
|
#include "basics.h"
|
|
|
|
struct tree_node *tree_search(void *key, struct tree_node **rootp,
|
|
int (*compare)(const void *, const void *),
|
|
int insert)
|
|
{
|
|
int res;
|
|
if (!*rootp) {
|
|
if (!insert) {
|
|
return NULL;
|
|
} else {
|
|
struct tree_node *n;
|
|
REFTABLE_CALLOC_ARRAY(n, 1);
|
|
n->key = key;
|
|
*rootp = n;
|
|
return *rootp;
|
|
}
|
|
}
|
|
|
|
res = compare(key, (*rootp)->key);
|
|
if (res < 0)
|
|
return tree_search(key, &(*rootp)->left, compare, insert);
|
|
else if (res > 0)
|
|
return tree_search(key, &(*rootp)->right, compare, insert);
|
|
return *rootp;
|
|
}
|
|
|
|
void infix_walk(struct tree_node *t, void (*action)(void *arg, void *key),
|
|
void *arg)
|
|
{
|
|
if (t->left) {
|
|
infix_walk(t->left, action, arg);
|
|
}
|
|
action(arg, t->key);
|
|
if (t->right) {
|
|
infix_walk(t->right, action, arg);
|
|
}
|
|
}
|
|
|
|
void tree_free(struct tree_node *t)
|
|
{
|
|
if (!t) {
|
|
return;
|
|
}
|
|
if (t->left) {
|
|
tree_free(t->left);
|
|
}
|
|
if (t->right) {
|
|
tree_free(t->right);
|
|
}
|
|
reftable_free(t);
|
|
}
|