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Hook functions now directly callable instead of w/ "hook" statements.

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The return value of the call is an implicit boolean value of T if all
hook handlers ran, or F if one hook handler exited as a result of a
break statement and potentially prevented other handlers from running.

Scripts don't need to declare hooks with an explicit return type of bool
(internally, that's assumed), and any values given to (optional) return
statements in handler definitions are just ignored.

Addresses #918.
This commit is contained in:
Jon Siwek 2012-11-26 16:54:36 -06:00
parent e2fdf16e0c
commit 378ee699ff
15 changed files with 108 additions and 145 deletions
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4
src/Var.cc
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@ -294,12 +294,12 @@ void add_type(ID* id, BroType* t, attr_list* attr, int /* is_event */)
void begin_func(ID* id, const char* module_name, function_flavor flavor,
int is_redef, FuncType* t)
{
if ( flavor == FUNC_FLAVOR_EVENT || flavor == FUNC_FLAVOR_HOOK )
if ( flavor == FUNC_FLAVOR_EVENT )
{
const BroType* yt = t->YieldType();
if ( yt && yt->Tag() != TYPE_VOID )
id->Error("event/hook cannot yield a value", t);
id->Error("event cannot yield a value", t);
t->ClearYieldType(flavor);
}