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// Copyright 2009 Ryan Dahl <ry@tinyclouds.org>
#include <node_io_watcher.h>
#include <node.h>
#include <node_events.h>
#include <v8.h>
#include <assert.h>
namespace node {
using namespace v8;
void IOWatcher::Initialize(Handle<Object> target) {
HandleScope scope;
Local<FunctionTemplate> t = BuildTemplate<IOWatcher>("IOWatcher");
NODE_SET_PROTOTYPE_METHOD(t, "set", IOWatcher::Set);
NODE_SET_PROTOTYPE_METHOD(t, "start", IOWatcher::Start);
NODE_SET_PROTOTYPE_METHOD(t, "stop", IOWatcher::Stop);
target->Set(String::NewSymbol("IOWatcher"), t->GetFunction());
}
void IOWatcher::Callback(EV_P_ ev_io *w, int revents) {
IOWatcher *io = static_cast<IOWatcher*>(w->data);
assert(w == &io->watcher_);
HandleScope scope;
Local<Value> argv[2];
argv[0] = Local<Value>::New(revents & EV_READ ? True() : False());
argv[1] = Local<Value>::New(revents & EV_WRITE ? True() : False());
io->MakeCallback(2, argv);
}
Handle<Value> IOWatcher::Set(const Arguments& args) {
HandleScope scope;
IOWatcher *io = ObjectWrap::Unwrap<IOWatcher>(args.Holder());
if (!args[0]->IsInt32()) {
return ThrowException(Exception::TypeError(
String::New("First arg should be a file descriptor.")));
}
int fd = args[0]->Int32Value();
if (!args[1]->IsBoolean()) {
return ThrowException(Exception::TypeError(
String::New("Second arg should boolean (readable).")));
}
int events = 0;
if (args[1]->IsTrue()) events |= EV_READ;
if (!args[2]->IsBoolean()) {
return ThrowException(Exception::TypeError(
String::New("Third arg should boolean (writable).")));
}
if (args[2]->IsTrue()) events |= EV_WRITE;
ev_io_set(&io->watcher_, fd, events);
return Undefined();
}
Handle<Value> IOWatcher::Start(const Arguments& args) {
HandleScope scope;
IOWatcher *io = ObjectWrap::Unwrap<IOWatcher>(args.Holder());
if (!ev_is_active(&io->watcher_)) {
ev_io_start(EV_DEFAULT_UC_ &io->watcher_);
io->Active();
}
return Undefined();
}
Handle<Value> IOWatcher::Stop(const Arguments& args) {
HandleScope scope;
IOWatcher *io = ObjectWrap::Unwrap<IOWatcher>(args.Holder());
if (ev_is_active(&io->watcher_)) {
ev_io_stop(EV_DEFAULT_UC_ &io->watcher_);
io->Inactive();
}
return Undefined();
}
} // namespace node
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