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    
017    package org.jetbrains.jet.lang.resolve.calls;
018    
019    import org.jetbrains.annotations.NotNull;
020    import org.jetbrains.jet.lang.descriptors.CallableDescriptor;
021    import org.jetbrains.jet.lang.descriptors.CallableMemberDescriptor;
022    import org.jetbrains.jet.lang.descriptors.Visibilities;
023    import org.jetbrains.jet.lang.resolve.calls.context.BasicCallResolutionContext;
024    import org.jetbrains.jet.lang.resolve.calls.model.ResolvedCallWithTrace;
025    import org.jetbrains.jet.lang.resolve.calls.results.OverloadResolutionResultsImpl;
026    import org.jetbrains.jet.lang.resolve.scopes.JetScope;
027    
028    import static org.jetbrains.jet.lang.resolve.BindingContext.NEED_SYNTHETIC_ACCESSOR;
029    
030    public 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    }