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