nearby: snapshot as of cl/296436629

Signed-off-by: Alexey Polyudov <apolyudov@google.com>
Change-Id: I2cf5bf225b76f4c1541954651f3a7544a14e0cec

cpp/core/internal/loop_runner.cc

@@ -0,0 +1,54 @@
+#include "core/internal/loop_runner.h"
+
+#include "platform/exception.h"
+
+namespace location {
+namespace nearby {
+namespace connections {
+
+LoopRunner::LoopRunner(const std::string& name) : name_(name) {}
+
+bool LoopRunner::loop(Ptr<Callable<bool> > callable) {
+  ScopedPtr<Ptr<Callable<bool> > > scoped_callable(callable);
+
+  onEnterLoop();
+  while (true) {
+    onEnterIteration();
+    ExceptionOr<bool> should_continue = scoped_callable->call();
+    if (!should_continue.ok()) {
+      onExceptionExitLoop(should_continue.exception());
+      break;
+    }
+
+    onExitIteration();
+    if (!should_continue.result()) {
+      onExitLoop();
+      return true;
+    }
+  }
+  return false;
+}
+
+void LoopRunner::onEnterLoop() {
+  // TODO(tracyzhou): Add logging.
+}
+
+void LoopRunner::onEnterIteration() {
+  // TODO(tracyzhou): Add logging.
+}
+
+void LoopRunner::onExitIteration() {
+  // TODO(tracyzhou): Add logging.
+}
+
+void LoopRunner::onExitLoop() {
+  // TODO(tracyzhou): Add logging.
+}
+
+void LoopRunner::onExceptionExitLoop(Exception::Value exception) {
+  // TODO(tracyzhou): Add logging.
+}
+
+}  // namespace connections
+}  // namespace nearby
+}  // namespace location