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Prepend and creation of empty path should work, but it has strange

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syntax for now.
This commit is contained in:
Pavel Machek 2000-04-17 10:16:47 +00:00
parent f421cfdd80
commit afc54517db
2 changed files with 22 additions and 1 deletions
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4
filter/config.Y
View File

@ -73,6 +73,7 @@ CF_KEYWORDS(FUNCTION, PRINT, PRINTN, UNSET, RETURN,
DEFINED,
ADD, DELETE, CONTAINS, RESET,
APPEND, MATCH,
EMPTY,
FILTER, WHERE)
%nonassoc THEN
@ -418,6 +419,9 @@ term:
/* Paths */
| term '.' APPEND '(' term ')' { }
| term '.' RESET { }
| EMPTY { $$ = f_new_inst(); $$->code = 'E'; $$->aux = T_PATH; }
/* | term '.' LEN { $$->code = P('P','l'); } */
/* function_call is inlined here */

19
filter/filter.c
View File

@ -453,6 +453,22 @@ interpret(struct f_inst *what)
res.val.px.ip = ipa_and(mask, v1.val.px.ip);
}
break;
case 'E': /* Create empty attribute */
res.type = what->aux;
res.val.ad = adata_empty(f_pool);
break;
case P('A','p'): /* Path prepend */
TWOARGS;
if (v1.type != T_PATH)
runtime("Can't prepend to non-path");
if (v2.type != T_INT)
runtime("Can't prepend non-integer");
res.type = T_PATH;
res.val.ad = as_path_prepend(f_pool, v1.val.ad, v2.val.i);
break;
default:
bug( "Unknown instruction %d (%c)", what->code, what->code & 0xff);
}
@ -519,7 +535,7 @@ i_same(struct f_inst *f1, struct f_inst *f2)
break;
case 'p': ONEARG; break;
case '?': TWOARGS; break;
case '0': break;
case '0': case 'E': break;
case P('p',','): ONEARG; A2_SAME; break;
case 'a': A2_SAME; break;
case P('e','a'): A2_SAME; break;
@ -535,6 +551,7 @@ i_same(struct f_inst *f1, struct f_inst *f2)
break;
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;
default:
bug( "Unknown instruction %d in same (%c)", f1->code, f1->code & 0xff);
}