JS backend: minor improve in NamePredicate: replace list with set

js/js.translator/src/org/jetbrains/k2js/translate/intrinsic/functions/patterns/NamePredicate.java

@@ -18,6 +18,7 @@ package org.jetbrains.k2js.translate.intrinsic.functions.patterns;
 
 import com.google.common.base.Predicate;
 import com.google.common.collect.Lists;
+import com.google.common.collect.Sets;
 import com.intellij.util.Function;
 import com.intellij.util.containers.ContainerUtil;
 import org.jetbrains.annotations.NotNull;
@@ -28,6 +29,7 @@ import org.jetbrains.jet.lang.types.lang.PrimitiveType;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;
+import java.util.Set;
 
 public final class NamePredicate implements Predicate<Name> {
 
@@ -44,7 +46,7 @@ public final class NamePredicate implements Predicate<Name> {
     public static final NamePredicate STRING = new NamePredicate("String");
 
     @NotNull
-    private final List<Name> validNames = Lists.newArrayList();
+    private final Set<Name> validNames = Sets.newHashSet();
 
     public NamePredicate(@NotNull String... validNames) {
         this(Arrays.asList(validNames));
@@ -66,14 +68,6 @@ public final class NamePredicate implements Predicate<Name> {
 
     @Override
     public boolean apply(@Nullable Name name) {
-        if (name == null) {
-            return false;
-        }
-        for (Name validName : validNames) {
-            if (name.equals(validName)) {
-                return true;
-            }
-        }
-        return false;
+        return name != null && validNames.contains(name);
     }
 }