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.inference;
018    
019    import org.jetbrains.jet.lang.descriptors.TypeParameterDescriptor;
020    import org.jetbrains.jet.lang.types.JetType;
021    
022    import java.util.Set;
023    
024    public interface ConstraintResolutionListener {
025    
026        public static final ConstraintResolutionListener DO_NOTHING = new ConstraintResolutionListener() {
027            @Override
028            public void constraintsForUnknown(TypeParameterDescriptor typeParameterDescriptor, BoundsOwner typeValue) {
029            }
030    
031            @Override
032            public void constraintsForKnownType(JetType type, BoundsOwner typeValue) {
033            }
034    
035            @Override
036            public void done(ConstraintSystemSolution solution, Set<TypeParameterDescriptor> typeParameterDescriptors) {
037            }
038    
039            @Override
040            public void log(Object... messageFragments) {
041            }
042    
043            @Override
044            public void error(Object... messageFragments) {
045            }
046        };
047    
048        void constraintsForUnknown(TypeParameterDescriptor typeParameterDescriptor, BoundsOwner typeValue);
049        void constraintsForKnownType(JetType type, BoundsOwner typeValue);
050        void done(ConstraintSystemSolution solution, Set<TypeParameterDescriptor> typeParameterDescriptors);
051    
052        void log(Object... messageFragments);
053        void error(Object... messageFragments);
054    }