001    /*
002     * Copyright 2010-2015 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.kotlin.resolve.calls.inference;
018    
019    import org.jetbrains.annotations.NotNull;
020    import org.jetbrains.kotlin.types.JetType;
021    
022    public class SubtypingConstraint {
023        private final ConstraintType type;
024        private final JetType subtype;
025        private final JetType supertype;
026    
027        public SubtypingConstraint(@NotNull ConstraintType type, @NotNull JetType subtype, @NotNull JetType supertype) {
028            this.type = type;
029            this.subtype = subtype;
030            this.supertype = supertype;
031        }
032    
033        @NotNull
034        public JetType getSubtype() {
035            return subtype;
036        }
037    
038        @NotNull
039        public JetType getSupertype() {
040            return supertype;
041        }
042    
043        @NotNull
044        public ConstraintType getType() {
045            return type;
046        }
047    
048        @NotNull
049        public String getErrorMessage() {
050            return type.makeErrorMessage(this);
051        }
052    
053        @Override
054        public String toString() {
055            return getSubtype() + " :< " + getSupertype();
056        }
057    }