// TODO replace with encoding/gob when reflection is ready
func ReadArchive(packages map[string]*types.Package, filename, id string, data io.Reader) ([]byte, *types.Package, error) {
r := bufio.NewReader(data)
code, err := readUntilSeparator(r)
if err != nil {
return nil, nil, err
}
importList, err := readUntilSeparator(r)
if err != nil {
return nil, nil, err
}
pkg, err := gcimporter.ImportData(packages, filename, id, r)
if err != nil {
return nil, nil, err
}
var imports []*types.Package
for _, path := range strings.Split(string(importList), "\n") {
if path == "" {
continue
}
impPkg, found := packages[path]
if !found {
impPkg = types.NewPackage(path, "", types.NewScope(nil))
packages[path] = impPkg
}
imports = append(imports, impPkg)
}
pkg.SetImports(imports)
return code, pkg, nil
}
func (p *importer) pkg() *types.Package {
// if the package was seen before, i is its index (>= 0)
i := p.int()
if i >= 0 {
return p.pkgList[i]
}
// otherwise, i is the package tag (< 0)
if i != packageTag {
panic(fmt.Sprintf("unexpected package tag %d", i))
}
// read package data
name := p.string()
path := p.string()
// if the package was imported before, use that one; otherwise create a new one
pkg := p.imports[path]
if pkg == nil {
pkg = types.NewPackage(path, name, types.NewScope(nil))
p.imports[path] = pkg
}
p.pkgList = append(p.pkgList, pkg)
return pkg
}
// getPkg returns the package for a given id. If the package is
// not found but we have a package name, create the package and
// add it to the p.imports map.
//
func (p *parser) getPkg(id, name string) *types.Package {
// package unsafe is not in the imports map - handle explicitly
if id == "unsafe" {
return types.Unsafe
}
pkg := p.imports[id]
if pkg == nil && name != "" {
pkg = types.NewPackage(id, name, types.NewScope(nil))
p.imports[id] = pkg
}
return pkg
}
func tool() error {
flag.Parse()
cmd := flag.Arg(0)
switch cmd {
case "build":
buildFlags := flag.NewFlagSet("build", flag.ContinueOnError)
var pkgObj string
buildFlags.StringVar(&pkgObj, "o", "", "")
buildFlags.Parse(flag.Args()[1:])
if buildFlags.NArg() == 0 {
wd, err := os.Getwd()
if err != nil {
return err
}
buildContext := &build.Context{
GOROOT: build.Default.GOROOT,
GOPATH: build.Default.GOPATH,
GOOS: build.Default.GOOS,
GOARCH: "js",
Compiler: "gc",
}
buildPkg, err := buildContext.ImportDir(wd, 0)
if err != nil {
return err
}
pkg := &Package{Package: buildPkg}
pkg.ImportPath = wd
if err := buildPackage(pkg); err != nil {
return err
}
if pkgObj == "" {
pkgObj = path.Base(wd) + ".js"
}
if err := writeCommandPackage(pkg, pkgObj); err != nil {
return err
}
return nil
}
if strings.HasSuffix(buildFlags.Arg(0), ".go") {
for _, arg := range buildFlags.Args() {
if !strings.HasSuffix(arg, ".go") {
return fmt.Errorf("named files must be .go files")
}
}
if pkgObj == "" {
basename := path.Base(buildFlags.Arg(0))
pkgObj = basename[:len(basename)-3] + ".js"
}
if err := buildFiles(buildFlags.Args(), pkgObj); err != nil {
return err
}
return nil
}
for _, pkgPath := range buildFlags.Args() {
buildPkg, err := buildImport(pkgPath, 0)
if err != nil {
return err
}
pkg := &Package{Package: buildPkg}
if err := buildPackage(pkg); err != nil {
return err
}
if pkgObj == "" {
pkgObj = path.Base(buildFlags.Arg(0)) + ".js"
}
if err := writeCommandPackage(pkg, pkgObj); err != nil {
return err
}
}
return nil
case "install":
installFlags := flag.NewFlagSet("install", flag.ContinueOnError)
installFlags.Parse(flag.Args()[1:])
installMode = true
for _, pkgPath := range installFlags.Args() {
buildPkg, err := buildImport(pkgPath, 0)
if err != nil {
return err
}
pkg := &Package{Package: buildPkg}
if pkg.IsCommand() {
pkg.PkgObj = pkg.BinDir + "/" + path.Base(pkg.ImportPath) + ".js"
}
if err := buildPackage(pkg); err != nil {
return err
}
if err := writeCommandPackage(pkg, pkg.PkgObj); err != nil {
return err
}
}
return nil
case "run":
lastSourceArg := 1
for {
if !strings.HasSuffix(flag.Arg(lastSourceArg), ".go") {
break
}
lastSourceArg += 1
}
if lastSourceArg == 1 {
return fmt.Errorf("gopherjs run: no go files listed")
}
tempfile, err := ioutil.TempFile("", path.Base(flag.Arg(1))+".")
if err != nil {
return err
}
defer func() {
tempfile.Close()
os.Remove(tempfile.Name())
}()
if err := buildFiles(flag.Args()[1:lastSourceArg], tempfile.Name()); err != nil {
return err
}
if err := runNode(tempfile.Name(), flag.Args()[lastSourceArg:], ""); err != nil {
return err
}
return nil
case "test":
testFlags := flag.NewFlagSet("test", flag.ContinueOnError)
short := testFlags.Bool("short", false, "")
verbose := testFlags.Bool("v", false, "")
testFlags.Parse(flag.Args()[1:])
mainPkg := &Package{Package: &build.Package{
ImportPath: "main",
}}
packages["main"] = mainPkg
mainPkgTypes := types.NewPackage("main", "main", types.NewScope(nil))
testingPkgTypes, _ := typesConfig.Import(typesConfig.Packages, "testing")
mainPkgTypes.SetImports([]*types.Package{testingPkgTypes})
typesConfig.Packages["main"] = mainPkgTypes
mainPkg.JavaScriptCode = []byte("Go$pkg.main = function() {\nGo$packages[\"flag\"].Parse();\n")
for _, pkgPath := range testFlags.Args() {
buildPkg, err := buildImport(pkgPath, 0)
if err != nil {
return err
}
pkg := &Package{Package: buildPkg}
pkg.GoFiles = append(pkg.GoFiles, pkg.TestGoFiles...)
if err := buildPackage(pkg); err != nil {
return err
}
testPkg := &Package{Package: &build.Package{
ImportPath: pkg.ImportPath + "_test",
Dir: pkg.Dir,
GoFiles: pkg.XTestGoFiles,
}}
if err := buildPackage(testPkg); err != nil {
return err
}
pkgTypes := typesConfig.Packages[pkg.ImportPath]
testPkgTypes := typesConfig.Packages[testPkg.ImportPath]
var names []string
var tests []string
for _, name := range pkgTypes.Scope().Names() {
if strings.HasPrefix(name, "Test") {
names = append(names, name)
tests = append(tests, fmt.Sprintf(`Go$packages["%s"].%s`, pkg.ImportPath, name))
}
}
for _, name := range testPkgTypes.Scope().Names() {
if strings.HasPrefix(name, "Test") {
names = append(names, name)
tests = append(tests, fmt.Sprintf(`Go$packages["%s"].%s`, testPkg.ImportPath, name))
}
}
mainPkg.JavaScriptCode = append(mainPkg.JavaScriptCode, []byte(fmt.Sprintf(`Go$packages["testing"].RunTests2("%s", "%s", ["%s"], [%s]);`+"\n", pkg.ImportPath, pkg.Dir, strings.Join(names, `", "`), strings.Join(tests, ", ")))...)
mainPkgTypes.SetImports(append(mainPkgTypes.Imports(), pkgTypes, testPkgTypes))
}
mainPkg.JavaScriptCode = append(mainPkg.JavaScriptCode, []byte("}; Go$pkg.init = function() {};")...)
tempfile, err := ioutil.TempFile("", "test.")
if err != nil {
return err
}
defer func() {
tempfile.Close()
os.Remove(tempfile.Name())
}()
if err := writeCommandPackage(mainPkg, tempfile.Name()); err != nil {
return err
}
var args []string
if *short {
args = append(args, "-test.short")
}
if *verbose {
args = append(args, "-test.v")
}
return runNode(tempfile.Name(), args, "")
case "tool":
tool := flag.Arg(1)
toolFlags := flag.NewFlagSet("tool", flag.ContinueOnError)
toolFlags.Bool("e", false, "")
toolFlags.Bool("l", false, "")
toolFlags.Bool("m", false, "")
toolFlags.String("o", "", "")
toolFlags.String("D", "", "")
toolFlags.String("I", "", "")
toolFlags.Parse(flag.Args()[2:])
if len(tool) == 2 {
switch tool[1] {
case 'g':
basename := path.Base(toolFlags.Arg(0))
if err := buildFiles([]string{toolFlags.Arg(0)}, basename[:len(basename)-3]+".js"); err != nil {
return err
}
return nil
}
}
return fmt.Errorf("Tool not supported: " + tool)
case "help", "":
os.Stderr.WriteString(`GopherJS is a tool for compiling Go source code to JavaScript.
Usage:
gopherjs command [arguments]
The commands are:
build compile packages and dependencies
install compile and install packages and dependencies
run compile and run Go program
`)
return nil
default:
return fmt.Errorf("gopherjs: unknown subcommand \"%s\"\nRun 'gopherjs help' for usage.", cmd)
}
}