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.inference;
018
019import org.jetbrains.jet.lang.descriptors.TypeParameterDescriptor;
020import org.jetbrains.jet.lang.types.JetType;
021
022import java.util.Set;
023
024public 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}