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revision: export commit_stack

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Dynamic arrays of commit pointers are used in several places.  Some of
them use a custom struct to hold array, item count and capacity, others
have them as separate variables linked by a common name part.

Pick one succinct, clean implementation -- commit_stack -- and convert
the different variants to it to reduce code duplication.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
René Scharfe
2025-12-24 18:03:14 +01:00
committed by Junio C Hamano
parent 66ce5f8e88
commit d8a17ef09b
3 changed files with 27 additions and 23 deletions
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17
commit.c
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@@ -1981,3 +1981,20 @@ int run_commit_hook(int editor_is_used, const char *index_file,
opt.invoked_hook = invoked_hook;
return run_hooks_opt(the_repository, name, &opt);
}
void commit_stack_push(struct commit_stack *stack, struct commit *commit)
{
ALLOC_GROW(stack->items, stack->nr + 1, stack->alloc);
stack->items[stack->nr++] = commit;
}
struct commit *commit_stack_pop(struct commit_stack *stack)
{
return stack->nr ? stack->items[--stack->nr] : NULL;
}
void commit_stack_clear(struct commit_stack *stack)
{
FREE_AND_NULL(stack->items);
stack->nr = stack->alloc = 0;
}