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Implements C.len operator for clist and eclist types.

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Thanks to Sergey Popovich for the original patch.
This commit is contained in:
Ondrej Zajicek 2013-10-02 14:57:29 +02:00
parent 28a10f84cb
commit 7ccb36d330
4 changed files with 11 additions and 3 deletions
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2
doc/bird.sgml
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@ -1077,6 +1077,8 @@ incompatible with each other (that is to prevent you from shooting in the foot).
no literals of this type. There are three special operators on
clists:
<cf><m/C/.len</cf> returns the length of clist <m/C/.
<cf>add(<m/C/,<m/P/)</cf> adds pair (or quad) <m/P/ to clist
<m/C/ and returns the result. If item <m/P/ is already in
clist <m/C/, it does nothing. <m/P/ may also be a clist,

4
filter/filter.c
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@ -1067,7 +1067,9 @@ interpret(struct f_inst *what)
switch(v1.type) {
case T_PREFIX: res.val.i = v1.val.px.len; break;
case T_PATH: res.val.i = as_path_getlen(v1.val.ad); break;
default: runtime( "Prefix or path expected" );
case T_CLIST: res.val.i = int_set_get_size(v1.val.ad); break;
case T_ECLIST: res.val.i = ec_set_get_size(v1.val.ad); break;
default: runtime( "Prefix, path, clist or eclist expected" );
}
break;
case P('c','p'): /* Convert prefix to ... */

5
filter/test.conf
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@ -142,10 +142,10 @@ eclist el2;
l = add( l, (3,5) );
l2 = filter( l, [(3,*)] );
l = delete( l, [(3,2..4)] );
print "Community list (1,2) (3,1) (3,5) ", l;
print "Community list (1,2) (3,1) (3,5) ", l, " len: ", l.len;
l = add( l, (3,2) );
l = add( l, (4,5) );
print "Community list (1,2) (3,1) (3,2) (3,5) (4,5) ", l;
print "Community list (1,2) (3,1) (3,2) (3,5) (4,5) ", l, " len: ", l.len;
print "Should be true: ", l ~ [(*,2)], " ", l ~ [(*,5)], " ", l ~ [(*, one)];
print "Should be false: ", l ~ [(*,3)], " ", l ~ [(*,(one+6))], " ", l ~ [(*, (one+one+one))];
l = delete( l, [(*,(one+onef(3)))] );
@ -168,6 +168,7 @@ eclist el2;
el = add(el, (ro, 11.21.31.41.mask(16), 200));
print "EC list (rt, 10, 20) (ro, 10.20.30.40, 100) (ro, 11.21.0.0, 200):";
print el;
print "EC len: ", el.len;
el = delete(el, (rt, 10, 20));
el = delete(el, (rt, 10, 30));
el = add(el, (unknown 2, ten, 1));

3
nest/attrs.h
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@ -69,6 +69,9 @@ int as_path_match(struct adata *path, struct f_path_mask *mask);
static inline int int_set_get_size(struct adata *list)
{ return list->length / 4; }
static inline int ec_set_get_size(struct adata *list)
{ return list->length / 8; }
static inline u32 *int_set_get_data(struct adata *list)
{ return (u32 *) list->data; }