cmd/gomobile: add modulemaps to framework bundles for simpler imports
Modulemaps allow users to use the import directives without
providing the specific header file but by using a module name
in Objective-C and Swift.
gomobile bind -target=ios golang.org/x/mobile/example/bind/hello
Add the generated framework to an Xcode project. You will be able
to import the library header and use the library by importing hello
in Swift.
import hello
// ...
hello.GoHelloGreetings("burcu");
In Objective-C, you will be able to import with the module name
similarly by using the import directive below.
#import hello
This CL also enables Go bindings to be used from Swift without an
Objective-C bridging header.
Fixes golang/go#12422
Change-Id: I7c60349caad100861d0b642ddfa873d7ada47598
Reviewed-on: https://go-review.googlesource.com/15044
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
diff --git a/cmd/gomobile/bind_iosapp.go b/cmd/gomobile/bind_iosapp.go
index 12c2bba..1b9b097 100644
--- a/cmd/gomobile/bind_iosapp.go
+++ b/cmd/gomobile/bind_iosapp.go
@@ -93,7 +93,24 @@
if err := symlink("Versions/Current/Resources", buildO+"/Resources"); err != nil {
return err
}
- return ioutil.WriteFile(buildO+"/Resources/Info.plist", []byte(iosBindInfoPlist), 0666)
+ if err := ioutil.WriteFile(buildO+"/Resources/Info.plist", []byte(iosBindInfoPlist), 0666); err != nil {
+ return err
+ }
+
+ var mmVals = struct {
+ Module string
+ Header string
+ }{
+ Module: name,
+ Header: strings.Title(name) + ".h",
+ }
+ err = writeFile(buildO+"/Versions/A/Modules/module.modulemap", func(w io.Writer) error {
+ return iosModuleMapTmpl.Execute(w, mmVals)
+ })
+ if err != nil {
+ return err
+ }
+ return symlink("Versions/Current/Modules", buildO+"/Modules")
}
const iosBindInfoPlist = `<?xml version="1.0" encoding="UTF-8"?>
@@ -104,6 +121,11 @@
</plist>
`
+var iosModuleMapTmpl = template.Must(template.New("iosmmap").Parse(`framework module "{{.Module}}" {
+ header "{{.Header}}"
+ export *
+}`))
+
func goIOSBindArchive(name, path string, env []string) (string, error) {
arch := getenv(env, "GOARCH")
archive := filepath.Join(tmpdir, name+"-"+arch+".a")
