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 com.google.common.collect.Maps;
020    
021    import java.util.Map;
022    
023    public 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    }