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// Copyright 2009 Ryan Dahl <ry@tinyclouds.org>
#include <node_events.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <arpa/inet.h> /* inet_ntop */
#include <netinet/in.h> /* sockaddr_in, sockaddr_in6 */
#include <node.h>
#include <ev.h>
#include <v8.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);
Local<FunctionTemplate> __emit = FunctionTemplate::New(Emit);
constructor_template->PrototypeTemplate()->Set(String::NewSymbol("emit"),
__emit);
constructor_template->SetClassName(String::NewSymbol("EventEmitter"));
events_symbol = NODE_PSYMBOL("_events");
// All other prototype methods are defined in events.js
}
static bool ReallyEmit(Handle<Object> self,
Handle<String> event,
int argc,
Handle<Value> argv[]) {
// HandleScope not needed here because only called from one of the two
// functions below
Local<Value> events_v = self->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(self, 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(self, argc, argv);
if (try_catch.HasCaught()) {
FatalException(try_catch);
return false;
}
}
} else {
return false;
}
return true;
}
Handle<Value> EventEmitter::Emit(const Arguments& args) {
HandleScope scope;
if (args.Length() == 0) {
return ThrowException(Exception::TypeError(
String::New("Must give event name.")));
}
Local<String> event = args[0]->ToString();
int argc = args.Length() - 1;
Local<Value> argv[argc];
for (int i = 0; i < argc; i++) {
argv[i] = args[i+1];
}
bool r = ReallyEmit(args.Holder(), event, argc, argv);
return scope.Close(r ? True() : False());
}
bool EventEmitter::Emit(Handle<String> event, int argc, Handle<Value> argv[]) {
HandleScope scope;
return ReallyEmit(handle_, event, argc, argv);
}
} // namespace node
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