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.psi.JetCallExpression;
022    import org.jetbrains.jet.lang.resolve.calls.context.BasicCallResolutionContext;
023    import org.jetbrains.jet.lang.resolve.calls.model.ResolvedCall;
024    import org.jetbrains.jet.lang.resolve.calls.results.OverloadResolutionResultsImpl;
025    
026    public abstract class RecursiveCallResolverExtension implements CallResolverExtension {
027        @Override
028        public <F extends CallableDescriptor> void run(
029                @NotNull ResolvedCall<F> resolvedCall, @NotNull BasicCallResolutionContext context
030        ) {
031            if (isRecursion(resolvedCall, context) && context.call.getCallElement() instanceof JetCallExpression) {
032                runImpl((JetCallExpression) context.call.getCallElement(), resolvedCall, context);
033            }
034        }
035    
036        protected abstract <F extends CallableDescriptor> void runImpl(@NotNull JetCallExpression callExpression,
037                @NotNull ResolvedCall<F> resolvedCall, @NotNull BasicCallResolutionContext context);
038    
039        private static <F extends CallableDescriptor> boolean isRecursion(
040                @NotNull ResolvedCall<F> resolvedCall,
041                @NotNull BasicCallResolutionContext context
042        ) {
043            return resolvedCall.getResultingDescriptor().getOriginal().equals(context.scope.getContainingDeclaration());
044        }
045    }