CSE2410 Fall 2014 Bounce

// Copyright Joyent, Inc. and other Node contributors.

//

// Permission is hereby granted, free of charge, to any person obtaining a

// copy of this software and associated documentation files (the

// "Software"), to deal in the Software without restriction, including

// without limitation the rights to use, copy, modify, merge, publish,

// distribute, sublicense, and/or sell copies of the Software, and to permit

// persons to whom the Software is furnished to do so, subject to the

// following conditions:

//

// The above copyright notice and this permission notice shall be included

// in all copies or substantial portions of the Software.

//

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN

// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,

// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR

// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE

// USE OR OTHER DEALINGS IN THE SOFTWARE.

#include "node.h"

#include "handle_wrap.h"

namespace node {

using v8::Object;

using v8::Handle;

using v8::Local;

using v8::Persistent;

using v8::Value;

using v8::HandleScope;

using v8::FunctionTemplate;

using v8::String;

using v8::Function;

using v8::TryCatch;

using v8::Context;

using v8::Arguments;

using v8::Integer;

static Persistent<String> ontimeout_sym;

class TimerWrap : public HandleWrap {

 public:

  static void Initialize(Handle<Object> target) {

    HandleScope scope;

    HandleWrap::Initialize(target);

    Local<FunctionTemplate> constructor = FunctionTemplate::New(New);

    constructor->InstanceTemplate()->SetInternalFieldCount(1);

    constructor->SetClassName(String::NewSymbol("Timer"));

    NODE_SET_METHOD(constructor, "now", Now);

    NODE_SET_PROTOTYPE_METHOD(constructor, "close", HandleWrap::Close);

    NODE_SET_PROTOTYPE_METHOD(constructor, "ref", HandleWrap::Ref);

    NODE_SET_PROTOTYPE_METHOD(constructor, "unref", HandleWrap::Unref);

    NODE_SET_PROTOTYPE_METHOD(constructor, "start", Start);

    NODE_SET_PROTOTYPE_METHOD(constructor, "stop", Stop);

    NODE_SET_PROTOTYPE_METHOD(constructor, "setRepeat", SetRepeat);

    NODE_SET_PROTOTYPE_METHOD(constructor, "getRepeat", GetRepeat);

    NODE_SET_PROTOTYPE_METHOD(constructor, "again", Again);

    ontimeout_sym = NODE_PSYMBOL("ontimeout");

    target->Set(String::NewSymbol("Timer"), constructor->GetFunction());

  }

 private:

  static Handle<Value> New(const Arguments& args) {

    // This constructor should not be exposed to public javascript.

    // Therefore we assert that we are not trying to call this as a

    // normal function.

    assert(args.IsConstructCall());

    HandleScope scope;

    TimerWrap *wrap = new TimerWrap(args.This());

    assert(wrap);

    return scope.Close(args.This());

  }

  TimerWrap(Handle<Object> object)

      : HandleWrap(object, (uv_handle_t*) &handle_) {

    int r = uv_timer_init(uv_default_loop(), &handle_);

    assert(r == 0);

    handle_.data = this;

  }

  ~TimerWrap() {

  }

  static Handle<Value> Start(const Arguments& args) {

    HandleScope scope;

    UNWRAP(TimerWrap)

    int64_t timeout = args[0]->IntegerValue();

    int64_t repeat = args[1]->IntegerValue();

    int r = uv_timer_start(&wrap->handle_, OnTimeout, timeout, repeat);

    if (r) SetErrno(uv_last_error(uv_default_loop()));

    return scope.Close(Integer::New(r));

  }

  static Handle<Value> Stop(const Arguments& args) {

    HandleScope scope;

    UNWRAP(TimerWrap)

    int r = uv_timer_stop(&wrap->handle_);

    if (r) SetErrno(uv_last_error(uv_default_loop()));

    return scope.Close(Integer::New(r));

  }

  static Handle<Value> Again(const Arguments& args) {

    HandleScope scope;

    UNWRAP(TimerWrap)

    int r = uv_timer_again(&wrap->handle_);

    if (r) SetErrno(uv_last_error(uv_default_loop()));

    return scope.Close(Integer::New(r));

  }

  static Handle<Value> SetRepeat(const Arguments& args) {

    HandleScope scope;

    UNWRAP(TimerWrap)

    int64_t repeat = args[0]->IntegerValue();

    uv_timer_set_repeat(&wrap->handle_, repeat);

    return scope.Close(Integer::New(0));

  }

  static Handle<Value> GetRepeat(const Arguments& args) {

    HandleScope scope;

    UNWRAP(TimerWrap)

    int64_t repeat = uv_timer_get_repeat(&wrap->handle_);

    if (repeat < 0) SetErrno(uv_last_error(uv_default_loop()));

    return scope.Close(Integer::New(repeat));

  }

  static void OnTimeout(uv_timer_t* handle, int status) {

    HandleScope scope;

    TimerWrap* wrap = static_cast<TimerWrap*>(handle->data);

    assert(wrap);

    Local<Value> argv[1] = { Integer::New(status) };

    MakeCallback(wrap->object_, ontimeout_sym, ARRAY_SIZE(argv), argv);

  }

  static Handle<Value> Now(const Arguments& args) {

    HandleScope scope;

    uv_update_time(uv_default_loop());

    double now = static_cast<double>(uv_now(uv_default_loop()));

    return scope.Close(v8::Number::New(now));

  }

  uv_timer_t handle_;

};

}  // namespace node

NODE_MODULE(node_timer_wrap, node::TimerWrap::Initialize)