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//
Copyright 2009 Ryan Dahl <ry@tinyclouds.org>
#
include
<
node_events.h
>
#
include
<
node.h
>
namespace
node
{
using
namespace
v8
;
Persistent<FunctionTemplate> EventEmitter::constructor_template;
static
Persistent<String> events_symbol;
void
EventEmitter::Initialize
(Local<FunctionTemplate> ctemplate) {
HandleScope scope;
constructor_template = Persistent<FunctionTemplate>::
New
(ctemplate);
constructor_template->
SetClassName
(
String::NewSymbol
(
"
EventEmitter
"
));
events_symbol =
NODE_PSYMBOL
(
"
_events
"
);
//
All other prototype methods are defined in events.js
}
bool
EventEmitter::Emit
(Handle<String> event,
int
argc, Handle<Value> argv[]) {
HandleScope scope;
//
HandleScope not needed here because only called from one of the two
//
functions below
Local<Value> events_v = handle_->
Get
(events_symbol);
if
(!events_v->
IsObject
())
return
false
;
Local<Object> events = events_v->
ToObject
();
Local<Value> listeners_v = events->
Get
(event);
TryCatch try_catch;
if
(listeners_v->
IsFunction
()) {
//
Optimized one-listener case
Local<Function> listener = Local<Function>::
Cast
(listeners_v);
listener->
Call
(handle_, argc, argv);
if
(try_catch.
HasCaught
()) {
FatalException
(try_catch);
return
false
;
}
}
else
if
(listeners_v->
IsArray
()) {
Local<Array> listeners = Local<Array>::
Cast
(listeners_v->
ToObject
()->
Clone
());
for
(
uint32_t
i =
0
; i < listeners->
Length
(); i++) {
Local<Value> listener_v = listeners->
Get
(i);
if
(!listener_v->
IsFunction
())
continue
;
Local<Function> listener = Local<Function>::
Cast
(listener_v);
listener->
Call
(handle_, argc, argv);
if
(try_catch.
HasCaught
()) {
FatalException
(try_catch);
return
false
;
}
}
}
else
{
return
false
;
}
return
true
;
}
}
//
namespace node
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