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decorate: allow const objects to be decorated 

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