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.annotations.NotNull;
020import org.jetbrains.jet.lang.types.JetType;
021
022public 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}