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decorate: allow const objects to be decorated

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We don't actually modify the struct object, so there is no
reason not to accept const versions (and this allows other
callsites, like the next patch, to use the decoration
machinery).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2008-08-20 13:55:33 -04:00 committed by Junio C Hamano
parent e276c26b4b
commit 54988bdad7
2 changed files with 9 additions and 8 deletions
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11
decorate.c
View File

@ -6,13 +6,13 @@
#include "object.h"
#include "decorate.h"
static unsigned int hash_obj(struct object *obj, unsigned int n)
static unsigned int hash_obj(const struct object *obj, unsigned int n)
{
unsigned int hash = *(unsigned int *)obj->sha1;
return hash % n;
}
static void *insert_decoration(struct decoration *n, struct object *base, void *decoration)
static void *insert_decoration(struct decoration *n, const struct object *base, void *decoration)
{
int size = n->size;
struct object_decoration *hash = n->hash;
@ -44,7 +44,7 @@ static void grow_decoration(struct decoration *n)
n->nr = 0;
for (i = 0; i < old_size; i++) {
struct object *base = old_hash[i].base;
const struct object *base = old_hash[i].base;
void *decoration = old_hash[i].decoration;
if (!base)
@ -55,7 +55,8 @@ static void grow_decoration(struct decoration *n)
}
/* Add a decoration pointer, return any old one */
void *add_decoration(struct decoration *n, struct object *obj, void *decoration)
void *add_decoration(struct decoration *n, const struct object *obj,
void *decoration)
{
int nr = n->nr + 1;
@ -65,7 +66,7 @@ void *add_decoration(struct decoration *n, struct object *obj, void *decoration)
}
/* Lookup a decoration pointer */
void *lookup_decoration(struct decoration *n, struct object *obj)
void *lookup_decoration(struct decoration *n, const struct object *obj)
{
int j;

6
decorate.h
View File

@ -2,7 +2,7 @@
#define DECORATE_H
struct object_decoration {
struct object *base;
const struct object *base;
void *decoration;
};
@ -12,7 +12,7 @@ struct decoration {
struct object_decoration *hash;
};
extern void *add_decoration(struct decoration *n, struct object *obj, void *decoration);
extern void *lookup_decoration(struct decoration *n, struct object *obj);
extern void *add_decoration(struct decoration *n, const struct object *obj, void *decoration);
extern void *lookup_decoration(struct decoration *n, const struct object *obj);
#endif