Cleanup use of Guava library

[yangtools.git] / yang / yang-parser-impl / src / main / java / org / opendaylight / yangtools / yang / parser / stmt / rfc6020 / TypeUtils.java

diff --git a/yang/yang-parser-impl/src/main/java/org/opendaylight/yangtools/yang/parser/stmt/rfc6020/TypeUtils.java b/yang/yang-parser-impl/src/main/java/org/opendaylight/yangtools/yang/parser/stmt/rfc6020/TypeUtils.java
index 68c55c886b876ce493eae6c12adedf5bf6efb010..ad6efa741c9f4998962521ff4e19640e31414d60 100644 (file)
--- a/yang/yang-parser-impl/src/main/java/org/opendaylight/yangtools/yang/parser/stmt/rfc6020/TypeUtils.java
+++ b/yang/yang-parser-impl/src/main/java/org/opendaylight/yangtools/yang/parser/stmt/rfc6020/TypeUtils.java
@@ -7,7 +7,6 @@
  */
 package org.opendaylight.yangtools.yang.parser.stmt.rfc6020;
 
-import com.google.common.base.Optional;
 import com.google.common.base.Preconditions;
 import com.google.common.base.Splitter;
 import com.google.common.base.Strings;
@@ -21,6 +20,7 @@ import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 import java.util.Set;
 import org.opendaylight.yangtools.yang.common.QName;
 import org.opendaylight.yangtools.yang.common.YangVersion;
@@ -151,8 +151,8 @@ public final class TypeUtils {
     public static List<RangeConstraint> parseRangeListFromString(final StmtContext<?, ?, ?> ctx,
                                                                  final String rangeArgument) {
 
-        final Optional<String> description = Optional.absent();
-        final Optional<String> reference = Optional.absent();
+        final Optional<String> description = Optional.empty();
+        final Optional<String> reference = Optional.empty();
 
         final List<RangeConstraint> rangeConstraints = new ArrayList<>();
 
@@ -188,8 +188,8 @@ public final class TypeUtils {
 
     public static List<LengthConstraint> parseLengthListFromString(final StmtContext<?, ?, ?> ctx,
             final String lengthArgument) {
-        final Optional<String> description = Optional.absent();
-        final Optional<String> reference = Optional.absent();
+        final Optional<String> description = Optional.empty();
+        final Optional<String> reference = Optional.empty();
 
         final List<LengthConstraint> lengthConstraints = new ArrayList<>();