Adding Future method for DialerPhoneNumberUtil

This CL adds a method to DialerPhoneNumberUtil which returns a Future
holding the result of parsing a number into the DialerPhoneNumber proto.

This will be used in the APDL integration as it will use Futures as
well.

The CL also changes DialerExecutors.lowPriorityThreadPool to be an
ExecutorService instead of an Executor (the super type) so it can be
used in MoreExecutors.listeningDecorator.

Test: TAP
PiperOrigin-RevId: 171347542
Change-Id: I620aacf3304d625f57af6d2b89a36f11b44008dd

1 files changed, 19 insertions, 1 deletions

diff --git a/java/com/android/dialer/phonenumberproto/DialerPhoneNumberUtil.java b/java/com/android/dialer/phonenumberproto/DialerPhoneNumberUtil.java
index cc509f41b..a00ee75bf 100644
--- a/java/com/android/dialer/phonenumberproto/DialerPhoneNumberUtil.java
+++ b/java/com/android/dialer/phonenumberproto/DialerPhoneNumberUtil.java
@@ -16,6 +16,7 @@
 
 package com.android.dialer.phonenumberproto;
 
+import android.support.annotation.AnyThread;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.annotation.WorkerThread;
@@ -24,6 +25,8 @@ import com.android.dialer.DialerPhoneNumber;
 import com.android.dialer.DialerPhoneNumber.RawInput;
 import com.android.dialer.common.Assert;
 import com.android.dialer.common.LogUtil;
+import com.google.common.util.concurrent.ListenableFuture;
+import com.google.common.util.concurrent.ListeningExecutorService;
 import com.google.i18n.phonenumbers.NumberParseException;
 import com.google.i18n.phonenumbers.PhoneNumberUtil;
 import com.google.i18n.phonenumbers.PhoneNumberUtil.MatchType;
@@ -46,7 +49,7 @@ public class DialerPhoneNumberUtil {
   /**
    * Parses the provided raw phone number into a {@link DialerPhoneNumber}.
    *
-   * @see PhoneNumberUtil#parse(String, String)
+   * @see PhoneNumberUtil#parse(CharSequence, String)
    */
   @WorkerThread
   public DialerPhoneNumber parse(@Nullable String numberToParse, @Nullable String defaultRegion) {
@@ -73,6 +76,21 @@ public class DialerPhoneNumberUtil {
   }
 
   /**
+   * Parses the provided raw phone number into a Future result of {@link DialerPhoneNumber}.
+   *
+   * <p>Work is run on the provided {@link ListeningExecutorService}.
+   *
+   * @see PhoneNumberUtil#parse(CharSequence, String)
+   */
+  @AnyThread
+  public ListenableFuture<DialerPhoneNumber> parse(
+      @Nullable String numberToParse,
+      @Nullable String defaultRegion,
+      @NonNull ListeningExecutorService service) {
+    return service.submit(() -> parse(numberToParse, defaultRegion));
+  }
+
+  /**
    * Returns true if the two numbers were parseable by libphonenumber and are an {@link
    * MatchType#EXACT_MATCH} or if they have the same raw input.
    */