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.constants;
018    
019    import org.jetbrains.annotations.NotNull;
020    import org.jetbrains.kotlin.builtins.KotlinBuiltIns;
021    import org.jetbrains.kotlin.descriptors.annotations.AnnotationArgumentVisitor;
022    import org.jetbrains.kotlin.types.ErrorUtils;
023    import org.jetbrains.kotlin.types.JetType;
024    
025    public abstract class ErrorValue extends CompileTimeConstant<Void> {
026    
027        public ErrorValue() {
028            super(null, true, false, false);
029        }
030    
031        @Override
032        @Deprecated // Should not be called, for this is not a real value, but a indication of an error
033        public Void getValue() {
034            throw new UnsupportedOperationException();
035        }
036    
037        @Override
038        public <R, D> R accept(AnnotationArgumentVisitor<R, D> visitor, D data) {
039            return visitor.visitErrorValue(this, data);
040        }
041    
042        @NotNull
043        public static ErrorValue create(@NotNull String message) {
044            return new ErrorValueWithMessage(message);
045        }
046    
047        public static class ErrorValueWithMessage extends ErrorValue {
048            private final String message;
049    
050            public ErrorValueWithMessage(@NotNull String message) {
051                this.message = message;
052            }
053    
054            public String getMessage() {
055                return message;
056            }
057    
058            @NotNull
059            @Override
060            public JetType getType(@NotNull KotlinBuiltIns kotlinBuiltIns) {
061                return ErrorUtils.createErrorType(message);
062            }
063    
064            @Override
065            public String toString() {
066                return getMessage();
067            }
068        }
069    }