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 com.google.common.collect.Maps;
020
021import java.util.Map;
022
023public class ConstraintPosition {
024    public static final ConstraintPosition RECEIVER_POSITION = new ConstraintPosition("RECEIVER_POSITION");
025    public static final ConstraintPosition EXPECTED_TYPE_POSITION = new ConstraintPosition("EXPECTED_TYPE_POSITION");
026    public static final ConstraintPosition BOUND_CONSTRAINT_POSITION = new ConstraintPosition("BOUND_CONSTRAINT_POSITION");
027    public static final ConstraintPosition FROM_COMPLETER = new ConstraintPosition("FROM_COMPLETER");
028
029    private static final Map<Integer, ConstraintPosition> valueParameterPositions = Maps.newHashMap();
030
031    public static ConstraintPosition getValueParameterPosition(int index) {
032        ConstraintPosition position = valueParameterPositions.get(index);
033        if (position == null) {
034            position = new ConstraintPosition("VALUE_PARAMETER_POSITION(" + index + ")");
035            valueParameterPositions.put(index, position);
036        }
037        return position;
038    }
039
040    private final String debugName;
041
042    private ConstraintPosition(String name) {
043        debugName = name;
044    }
045
046    @Override
047    public String toString() {
048        return debugName;
049    }
050}