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.annotations.NotNull;
020    import org.jetbrains.annotations.Nullable;
021    import org.jetbrains.jet.lang.descriptors.TypeParameterDescriptor;
022    import org.jetbrains.jet.lang.types.JetType;
023    import org.jetbrains.jet.lang.types.Variance;
024    
025    import java.util.Collection;
026    
027    public interface TypeBounds {
028        @NotNull
029        Variance getVarianceOfPosition();
030    
031        @NotNull
032        TypeParameterDescriptor getTypeVariable();
033    
034        @NotNull
035        Collection<Bound> getBounds();
036    
037        boolean isEmpty();
038    
039        @Nullable
040        JetType getValue();
041    
042        @NotNull
043        Collection<JetType> getValues();
044    
045        enum BoundKind {
046            LOWER_BOUND, UPPER_BOUND, EXACT_BOUND
047        }
048    
049        class Bound {
050            public final JetType type;
051            public final BoundKind kind;
052            public final ConstraintPosition position;
053    
054            public Bound(@NotNull JetType type, @NotNull BoundKind kind, @NotNull ConstraintPosition position) {
055                this.type = type;
056                this.kind = kind;
057                this.position = position;
058            }
059        }
060    }