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Int sets moved to core. It is now possible to have variable of type clist.

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This commit is contained in:
Pavel Machek 2000-04-17 11:34:38 +00:00
parent e3558ab14e
commit 9c400ec9dd
5 changed files with 73 additions and 0 deletions
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5
filter/config.Y
View File

@ -390,6 +390,7 @@ term:
case SYM_VARIABLE | T_IP:
case SYM_VARIABLE | T_PATH_MASK:
case SYM_VARIABLE | T_PATH:
case SYM_VARIABLE | T_CLIST:
$$->code = 'C';
$$->a1.p = $1->aux2;
break;
@ -423,7 +424,11 @@ term:
| term '.' RESET { }
| '+' EMPTY '+' { $$ = f_new_inst(); $$->code = 'E'; $$->aux = T_PATH; }
| '-' EMPTY '-' { $$ = f_new_inst(); $$->code = 'E'; $$->aux = T_CLIST; }
| PREPEND '(' term ',' term ')' { $$ = f_new_inst(); $$->code = P('A','p'); $$->a1.p = $3; $$->a2.p = $5; }
/* | ADD '(' term, ',' term ')' { $$ = f_new_inst(); $$->code = P('C','a'); $$->a1.p = $3; $$->a2.p = $5; $$->aux = 'a'; }
| DELETE '(' term, ',' term ')' { $$ = f_new_inst(); $$->code = P('C','a'); $$->a1.p = $3; $$->a2.p = $5; $$->aux = 'd'; } */
/* | term '.' LEN { $$->code = P('P','l'); } */

16
filter/filter.c
View File

@ -483,6 +483,21 @@ interpret(struct f_inst *what)
res.val.ad = as_path_prepend(f_pool, v1.val.ad, v2.val.i);
break;
case P('C','a'): /* Community list add or delete */
TWOARGS;
if (v1.type != T_CLIST)
runtime("Can't add/delete to non-clist");
if (v2.type != T_PAIR)
runtime("Can't add/delete non-pair");
res.type = T_CLIST;
switch (what->aux) {
case 'a': res.val.ad = int_set_add(f_pool, v1.val.ad, v2.val.i); break;
case 'd': res.val.ad = int_set_del(f_pool, v1.val.ad, v2.val.i); break;
default: bug("unknown Ca operation");
}
break;
default:
bug( "Unknown instruction %d (%c)", what->code, what->code & 0xff);
}
@ -566,6 +581,7 @@ i_same(struct f_inst *f1, struct f_inst *f2)
case P('S','W'): ONEARG; if (!same_tree(f1->a2.p, f2->a2.p)) return 0; break;
case P('i','M'): TWOARGS; break;
case P('A','p'): TWOARGS; break;
case P('C','a'): TWOARGS; break;
default:
bug( "Unknown instruction %d in same (%c)", f1->code, f1->code & 0xff);
}

5
filter/test.conf
View File

@ -32,6 +32,7 @@ function fifteen()
function paths()
bgpmask p;
bgppath p2;
clist l;
{
p = / 4 3 2 1 /;
print "Testing path masks: ", p;
@ -46,6 +47,10 @@ bgppath p2;
print "Should be false: ", p2 ~ p;
print "Should be true: ", p2 ~ / * 4 3 2 1 /, p2, / * 4 3 2 1 /;
print "5 = ", p2.len;
l = - empty -;
l = add( l, (1,2) );
print "Community list ", l;
}
function startup()

43
nest/a-set.c
View File

@ -38,3 +38,46 @@ int_set_format(struct adata *set, byte *buf, unsigned int size)
}
*buf = 0;
}
struct adata *
int_set_add(struct linpool *pool, struct adata *list, u32 val)
{
struct adata *res = lp_alloc(pool, list->length + sizeof(struct adata) + 4);
res->length = list->length+4;
* (u32 *) res->data = val;
memcpy((char *) res->data + 4, list->data, list->length);
return res;
}
int
int_set_contains(struct adata *list, u32 val)
{
u32 *l = &(list->data);
int i;
for (i=0; i<list->length/4; i++)
if (*l++ == val)
return 1;
return 0;
}
struct adata *
int_set_del(struct linpool *pool, struct adata *list, u32 val)
{
struct adata *res;
u32 *l, *k;
int i;
if (!int_set_contains(list, val))
return list;
res = lp_alloc(pool, list->length + sizeof(struct adata) - 4);
res->length = list->length-4;
l = &(list->data);
k = &(res->data);
for (i=0; i<list->length/4; i++)
if (l[i] != val)
*k++ = l[i];
return res;
}

4
nest/attrs.h
View File

@ -29,5 +29,9 @@ int as_path_match(struct adata *path, struct f_path_mask *mask);
/* a-set.c */
void int_set_format(struct adata *set, byte *buf, unsigned int size);
struct adata *int_set_add(struct linpool *pool, struct adata *list, u32 val);
int int_set_contains(struct adata *list, u32 val);
struct adata *int_set_del(struct linpool *pool, struct adata *list, u32 val);
#endif