Method importClasses

internal/importers/java/java.go:597–647

importClasses imports the named classes from the classpaths of the Importer.

(names []string, allowMissingClasses bool)

// importClasses imports the named classes from the classpaths of the Importer.
func (j *Importer) importClasses(names []string, allowMissingClasses bool) ([]*Class, error) {
	if len(names) == 0 {
		return nil, nil
	}
	args := []string{"-J-Duser.language=en", "-s", "-protected", "-constants"}
	args = append(args, "-classpath", j.Classpath)
	if j.Bootclasspath != "" {
		args = append(args, "-bootclasspath", j.Bootclasspath)
	}
	args = append(args, names...)
	javapPath, err := javapPath()
	if err != nil {
		return nil, err
	}
	javap := exec.Command(javapPath, args...)
	out, err := javap.CombinedOutput()
	if err != nil {
		if _, ok := err.(*exec.ExitError); !ok {
			return nil, fmt.Errorf("javap failed: %v", err)
		}
		// Not every name is a Java class so an exit error from javap is not
		// fatal.
	}
	s := bufio.NewScanner(bytes.NewBuffer(out))
	var classes []*Class
	for _, name := range names {
		cls, err := j.scanClass(s, name)
		if err != nil {
			_, notfound := err.(*errClsNotFound)
			if notfound && allowMissingClasses {
				continue
			}
			if notfound && name != "android.databinding.DataBindingComponent" {
				return nil, err
			}
			// The Android Databinding library generates android.databinding.DataBindingComponent
			// too late in the build process for the gobind plugin to import it. Synthesize a class
			// for it instead.
			cls = &Class{
				Name:      name,
				FindName:  name,
				Interface: true,
				PkgName:   "databinding",
				JNIName:   JNIMangle(name),
			}
		}
		classes = append(classes, cls)
		j.clsMap[name] = cls
	}
	return classes, nil
}

// importReferencedClasses imports all implicit classes (super types, parameter and
// return types) for the given classes not already imported.