Support using deno as a library

Makefile

@@ -18,6 +18,7 @@ TS_FILES = \
  v8worker2.d.ts
 
 GO_FILES = \
+ cmd/main.go \
  assets.go \
  deno_dir.go \
  deno_dir_test.go \
@@ -31,13 +32,14 @@ GO_FILES = \
  timers.go \
  util.go
 
+
 deno: msg.pb.go $(GO_FILES)
- go build -o deno
+ go build -o deno ./cmd
 
 assets.go: dist/main.js
  cp node_modules/typescript/lib/lib.*d.ts dist/
  cp deno.d.ts dist/
- go-bindata -pkg main -o assets.go dist/
+ go-bindata -pkg deno -o assets.go dist/
 
 msg.pb.go: msg.proto
  protoc --go_out=. msg.proto

README.md

@@ -40,6 +40,9 @@ A JavaScript runtime using V8 6.8 and Go.
 
 * Aims to be browser compatible.
 
+* Can be used as a library to easily build your own JavaScript runtime.
+ https://github.com/ry/deno/blob/master/cmd/main.go
+
 
 ## Status
 

cmd/main.go

@@ -0,0 +1,13 @@
+// Copyright 2018 Ryan Dahl <[email protected]>
+// All rights reserved. MIT License.
+package main
+
+import (
+ "github.com/ry/deno"
+)
+
+func main() {
+ deno.Init()
+ deno.Eval("deno_main.js", "denoMain()")
+ deno.Loop()
+}

deno_dir.go

@@ -1,6 +1,6 @@
 // Copyright 2018 Ryan Dahl <[email protected]>
 // All rights reserved. MIT License.
-package main
+package deno
 
 import (
  "crypto/md5"

deno_dir_test.go

@@ -1,6 +1,6 @@
 // Copyright 2018 Ryan Dahl <[email protected]>
 // All rights reserved. MIT License.
-package main
+package deno
 
 import (
  "io/ioutil"

dispatch.go

@@ -1,10 +1,9 @@
 // Copyright 2018 Ryan Dahl <[email protected]>
 // All rights reserved. MIT License.
-package main
+package deno
 
 import (
  "github.com/golang/protobuf/proto"
- "github.com/ry/v8worker2"
  "sync"
 )
 
@@ -20,19 +19,10 @@ var stats struct {
  v8workerBytesRecv int
 }
 
-// There is a single global worker for this process.
-// This file should be the only part of deno that directly access it, so that
-// all interaction with V8 can go through a single point.
-var worker *v8worker2.Worker
-
 var channels = make(map[string][]Subscriber)
 
 type Subscriber func(payload []byte) []byte
 
-func createWorker() {
- worker = v8worker2.New(recv)
-}
-
 func recv(buf []byte) (response []byte) {
  stats.v8workerRecv++
  stats.v8workerBytesRecv += len(buf)

echo.go

@@ -1,6 +1,6 @@
 // Copyright 2018 Ryan Dahl <[email protected]>
 // All rights reserved. MIT License.
-package main
+package deno
 
 // For testing
 func InitEcho() {

fetch.go

@@ -1,6 +1,6 @@
 // Copyright 2018 Ryan Dahl <[email protected]>
 // All rights reserved. MIT License.
-package main
+package deno
 
 import (
  "github.com/golang/protobuf/proto"

integration_test.go

@@ -1,6 +1,6 @@
 // Copyright 2018 Ryan Dahl <[email protected]>
 // All rights reserved. MIT License.
-package main
+package deno
 
 import (
  "bytes"

main.go

@@ -1,6 +1,6 @@
 // Copyright 2018 Ryan Dahl <[email protected]>
 // All rights reserved. MIT License.
-package main
+package deno
 
 import (
  "flag"
@@ -34,8 +34,16 @@ func FlagsParse() []string {
  return args
 }
 
-func main() {
- args := FlagsParse()
+// There is a single global worker for this process.
+// This file should be the only part of deno that directly access it, so that
+// all interaction with V8 can go through a single point.
+var worker *v8worker2.Worker
+var workerArgs []string
+var main_js string
+var main_map string
+
+func Init() {
+ workerArgs = FlagsParse()
 
  // Maybe start Golang CPU profiler.
  // Use --prof for profiling JS.
@@ -49,33 +57,36 @@ func main() {
  }
 
  createDirs()
- createWorker()
-
  InitOS()
  InitEcho()
  InitTimers()
  InitFetch()
 
- main_js := stringAsset("main.js")
+ worker = v8worker2.New(recv)
+
+ main_js = stringAsset("main.js")
  err := worker.Load("/main.js", main_js)
  exitOnError(err)
- main_map := stringAsset("main.map")
-
- cwd, err := os.Getwd()
- check(err)
+ main_map = stringAsset("main.map")
+}
 
- err = worker.Load("deno_main.js", "denoMain()")
+// It's up to library users to call
+// deno.Eval("deno_main.js", "denoMain()")
+func Eval(filename string, code string) {
+ err := worker.Load(filename, code)
  exitOnError(err)
+}
 
- var command = Msg_START // TODO use proto3
+func Loop() {
+ cwd, err := os.Getwd()
+ check(err)
  PubMsg("start", &Msg{
- Command: command,
+ Command: Msg_START,
  StartCwd: cwd,
- StartArgv: args,
+ StartArgv: workerArgs,
  StartDebugFlag: *flagDebug,
  StartMainJs: main_js,
  StartMainMap: main_map,
  })
-
  DispatchLoop()
 }

main.ts

@@ -47,5 +47,4 @@ let startCalled = false;
  const mod = runtime.resolveModule(inputFn, `${cwd}/`);
  mod.compileAndRun();
  });
-}
-
+};

msg.proto

@@ -2,6 +2,7 @@
 // All rights reserved. MIT License.
 syntax = "proto3";
 package main;
+option go_package = "deno";
 
 message BaseMsg {
  string channel = 1;

os.go

@@ -1,6 +1,6 @@
 // Copyright 2018 Ryan Dahl <[email protected]>
 // All rights reserved. MIT License.
-package main
+package deno
 
 import (
  "github.com/golang/protobuf/proto"

os_test.go

@@ -1,6 +1,6 @@
 // Copyright 2018 Ryan Dahl <[email protected]>
 // All rights reserved. MIT License.
-package main
+package deno
 
 import (
  "path"

timers.go

@@ -1,6 +1,6 @@
 // Copyright 2018 Ryan Dahl <[email protected]>
 // All rights reserved. MIT License.
-package main
+package deno
 
 import (
  "github.com/golang/protobuf/proto"

util.go

@@ -1,6 +1,6 @@
 // Copyright 2018 Ryan Dahl <[email protected]>
 // All rights reserved. MIT License.
-package main
+package deno
 
 import (
  "fmt"