frontend: optimize DescriptorPredicate.asNamePredicate

compiler/frontend/src/org/jetbrains/jet/lang/resolve/scopes/DescriptorPredicate.java

@@ -37,6 +37,10 @@ public abstract class DescriptorPredicate {
 
     public abstract boolean includeName(@NotNull Name name);
 
+    public boolean includeAnyName() {
+        return includeAll();
+    }
+
     public enum DescriptorKind {
         CLASS,
         CALLABLE_MEMBER,
@@ -175,6 +179,11 @@ public abstract class DescriptorPredicate {
             return true;
         }
 
+        @Override
+        public boolean includeAnyName() {
+            return true;
+        }
+
         @Override
         public boolean includeExtension(boolean extension) {
             return true;
@@ -219,6 +228,11 @@ public abstract class DescriptorPredicate {
         public boolean includeName(@NotNull Name name) {
             return required.matches(name);
         }
+
+        @Override
+        public boolean includeAnyName() {
+            return false;
+        }
     }
 
     public static DescriptorPredicate callableMembers(@NotNull NamePredicate required) {
@@ -293,12 +307,17 @@ public abstract class DescriptorPredicate {
     }
 
     public NamePredicate asNamePredicate() {
-        return new NamePredicate() {
-            @Override
-            public boolean matches(@NotNull Name name) {
-                return includeName(name);
-            }
-        };
+        if (includeAnyName()) {
+            return NamePredicate.all();
+        }
+        else {
+            return new NamePredicate() {
+                @Override
+                public boolean matches(@NotNull Name name) {
+                    return includeName(name);
+                }
+            };
+        }
     }
 
 }