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.resolve.calls;
018
019import org.jetbrains.annotations.NotNull;
020import org.jetbrains.jet.lang.descriptors.CallableDescriptor;
021import org.jetbrains.jet.lang.descriptors.CallableMemberDescriptor;
022import org.jetbrains.jet.lang.descriptors.Visibilities;
023import org.jetbrains.jet.lang.resolve.calls.context.BasicCallResolutionContext;
024import org.jetbrains.jet.lang.resolve.calls.model.ResolvedCallWithTrace;
025import org.jetbrains.jet.lang.resolve.calls.results.OverloadResolutionResultsImpl;
026import org.jetbrains.jet.lang.resolve.scopes.JetScope;
027
028import static org.jetbrains.jet.lang.resolve.BindingContext.NEED_SYNTHETIC_ACCESSOR;
029
030public class NeedSyntheticCallResolverExtension implements CallResolverExtension {
031
032    @Override
033    public  <F extends CallableDescriptor> void run(
034            @NotNull OverloadResolutionResultsImpl<F> results,
035            @NotNull BasicCallResolutionContext context
036    ) {
037        if (results.isSingleResult()) {
038            ResolvedCallWithTrace<F> resolvedCall = results.getResultingCall();
039            CallableDescriptor targetDescriptor = resolvedCall.getResultingDescriptor();
040            if (needSyntheticAccessor(context.scope, targetDescriptor)) {
041                context.trace.record(NEED_SYNTHETIC_ACCESSOR, (CallableMemberDescriptor) targetDescriptor.getOriginal(), Boolean.TRUE);
042            }
043        }
044    }
045
046    //Necessary synthetic accessors in outer classes generated via old logic: CodegenContext.getAccessor
047    //Generation of accessors in nested classes (to invoke from outer,
048    //      e.g.: from class to classobject) controlled via NEED_SYNTHETIC_ACCESSOR slice
049    private boolean needSyntheticAccessor(JetScope invokationScope, CallableDescriptor targetDescriptor) {
050        return targetDescriptor instanceof CallableMemberDescriptor &&
051               targetDescriptor.getVisibility() == Visibilities.PRIVATE &&
052               targetDescriptor.getContainingDeclaration() != invokationScope.getContainingDeclaration().getContainingDeclaration();
053    }
054}