001/*
002 * Copyright 2010-2013 JetBrains s.r.o.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.jetbrains.jet.lang;
018
019import org.jetbrains.annotations.NotNull;
020import org.jetbrains.jet.lang.descriptors.NamespaceDescriptor;
021import org.jetbrains.jet.lang.resolve.BindingTrace;
022import org.jetbrains.jet.lang.resolve.scopes.WritableScope;
023
024public interface ModuleConfiguration {
025    ModuleConfiguration EMPTY = new ModuleConfiguration() {
026
027        @Override
028        public void extendNamespaceScope(@NotNull BindingTrace trace, @NotNull NamespaceDescriptor namespaceDescriptor, @NotNull WritableScope namespaceMemberScope) {
029        }
030
031        @Override
032        public String toString() {
033            return "EMPTY";
034        }
035    };
036
037    /**
038     * This method is called every time a namespace descriptor is created. Use it to add extra descriptors to the namespace, e.g. merge a
039     * Java package with a Kotlin one
040     */
041    void extendNamespaceScope(@NotNull BindingTrace trace, @NotNull NamespaceDescriptor namespaceDescriptor, @NotNull WritableScope namespaceMemberScope);
042}