Re: [PATCH 4/9] ref-filter.h: move contains caches into filter

> From: Victoria Dye <vdye@github.com>
> 
> Move the 'contains_cache' and 'no_contains_cache' used in filter_refs into
> an 'internal' struct of the 'struct ref_filter'. In later patches, the
> 'struct ref_filter *' will be a common data structure across multiple
> filtering functions. These caches are part of the common functionality the
> filter struct will support, so they are updated to be internally accessible
> wherever the filter is used.
> 
> The design used here is mirrors what was introduced in 576de3d956

> (unpack_trees: start splitting internal fields from public API, 2023-02-27)
> for 'unpack_trees_options'.
> 
> Signed-off-by: Victoria Dye <vdye@github.com>
> ---
>  ref-filter.c | 14 ++++++--------
>  ref-filter.h |  6 ++++++
>  2 files changed, 12 insertions(+), 8 deletions(-)
> 
> diff --git a/ref-filter.c b/ref-filter.c
> index 7250089b7c6..5129b6986c9 100644
> --- a/ref-filter.c
> +++ b/ref-filter.c
> @@ -2764,8 +2764,6 @@ static int filter_ref_kind(struct ref_filter *filter, const char *refname)
>  struct ref_filter_cbdata {
>  	struct ref_array *array;
>  	struct ref_filter *filter;
> -	struct contains_cache contains_cache;
> -	struct contains_cache no_contains_cache;
>  };
>  
>  /*
> @@ -2816,11 +2814,11 @@ static int ref_filter_handler(const char *refname, const struct object_id *oid,
>  			return 0;
>  		/* We perform the filtering for the '--contains' option... */
>  		if (filter->with_commit &&
> -		    !commit_contains(filter, commit, filter->with_commit, &ref_cbdata->contains_cache))
> +		    !commit_contains(filter, commit, filter->with_commit, &filter->internal.contains_cache))
>  			return 0;
>  		/* ...or for the `--no-contains' option */
>  		if (filter->no_commit &&
> -		    commit_contains(filter, commit, filter->no_commit, &ref_cbdata->no_contains_cache))
> +		    commit_contains(filter, commit, filter->no_commit, &filter->internal.no_contains_cache))
>  			return 0;
>  	}
>  
> @@ -2989,8 +2987,8 @@ int filter_refs(struct ref_array *array, struct ref_filter *filter, unsigned int
>  	save_commit_buffer_orig = save_commit_buffer;
>  	save_commit_buffer = 0;
>  
> -	init_contains_cache(&ref_cbdata.contains_cache);
> -	init_contains_cache(&ref_cbdata.no_contains_cache);
> +	init_contains_cache(&filter->internal.contains_cache);
> +	init_contains_cache(&filter->internal.no_contains_cache);
>  
>  	/*  Simple per-ref filtering */
>  	if (!filter->kind)
> @@ -3014,8 +3012,8 @@ int filter_refs(struct ref_array *array, struct ref_filter *filter, unsigned int
>  			head_ref(ref_filter_handler, &ref_cbdata);
>  	}
>  
> -	clear_contains_cache(&ref_cbdata.contains_cache);
> -	clear_contains_cache(&ref_cbdata.no_contains_cache);
> +	clear_contains_cache(&filter->internal.contains_cache);
> +	clear_contains_cache(&filter->internal.no_contains_cache);
>  
>  	/*  Filters that need revision walking */
>  	reach_filter(array, &filter->reachable_from, INCLUDE_REACHED);
> diff --git a/ref-filter.h b/ref-filter.h
> index d87d61238b7..0db3ff52889 100644
> --- a/ref-filter.h
> +++ b/ref-filter.h
> @@ -7,6 +7,7 @@
>  #include "commit.h"
>  #include "string-list.h"
>  #include "strvec.h"
> +#include "commit-reach.h"
>  
>  /* Quoting styles */
>  #define QUOTE_NONE 0
> @@ -75,6 +76,11 @@ struct ref_filter {
>  		lines;
>  	int abbrev,
>  		verbose;
> +
> +	struct {
> +		struct contains_cache contains_cache;
> +		struct contains_cache no_contains_cache;
> +	} internal;
>  };
>  
>  struct ref_format {
> -- 
> gitgitgadget
> 
>