bind,internal/importers: add Unwrap methods to unwrap Java wrappers

For Java classes implemented in Go, it is useful to take a Java instance
and extract its wrapped Go instance. For example, consider the
java.lang.Runnable implementation wrapping a Go function:

package somepkg

type GoRunnable struct {
    lang.Runnable
    f func()
}

Java methods that take a java.lang.Runnable cannot directly take a
*GoRunnable, so this CL adds a Unwrap method:

import gorun "Java/somepkg/GoRunnable"

...

r := gorun.New()
r.Unwrap().(*GoRunnable).f = func() { ... }
javapkg.Run(r)

The extra interface conversion is unfortunately needed to avoid
import cycles.

Change-Id: Ib775a5712cd25aa75a19d364a55d76b1e11dce77
Reviewed-on: https://go-review.googlesource.com/35295
Reviewed-by: David Crawshaw <crawshaw@golang.org>
13 files changed
tree: 8dc55989f596b92f9c5bf3c39e9d44d381639e43
  1. .gitattributes
  2. .gitignore
  3. AUTHORS
  4. CONTRIBUTING.md
  5. CONTRIBUTORS
  6. LICENSE
  7. PATENTS
  8. README.md
  9. app/
  10. asset/
  11. bind/
  12. cmd/
  13. codereview.cfg
  14. doc/
  15. event/
  16. example/
  17. exp/
  18. geom/
  19. gl/
  20. internal/
  21. misc/
  22. testdata/
README.md

Go support for Mobile devices

The Go mobile repository holds packages and build tools for using Go on mobile platforms.

Package documentation as a starting point:

Caution image

The Go Mobile project is experimental. Use this at your own risk. While we are working hard to improve it, neither Google nor the Go team can provide end-user support.

This is early work and installing the build system requires Go 1.5. Follow the instructions on golang.org/wiki/Mobile to install the gomobile command, build the basic and the bind example apps.


Contributions to Go are appreciated. See https://golang.org/doc/contribute.html.