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.diagnostics;
018    
019    import com.intellij.openapi.util.TextRange;
020    import com.intellij.psi.PsiFile;
021    import org.jetbrains.annotations.NotNull;
022    import org.jetbrains.kotlin.diagnostics.rendering.DefaultErrorMessages;
023    
024    import java.util.ArrayList;
025    import java.util.Collections;
026    import java.util.List;
027    
028    public interface DiagnosticSink {
029        DiagnosticSink DO_NOTHING = new DiagnosticSink() {
030            @Override
031            public void report(@NotNull Diagnostic diagnostic) {
032            }
033    
034            @Override
035            public boolean wantsDiagnostics() {
036                return false;
037            }
038        };
039    
040        DiagnosticSink THROW_EXCEPTION = new DiagnosticSink() {
041            @Override
042            public void report(@NotNull Diagnostic diagnostic) {
043                if (diagnostic.getSeverity() == Severity.ERROR) {
044                    PsiFile psiFile = diagnostic.getPsiFile();
045                    List<TextRange> textRanges = diagnostic.getTextRanges();
046                    String diagnosticText = DefaultErrorMessages.render(diagnostic);
047                    throw new IllegalStateException(diagnostic.getFactory().getName() + ": " + diagnosticText + " " + DiagnosticUtils.atLocation(psiFile, textRanges.get(0)));
048                }
049            }
050    
051            @Override
052            public boolean wantsDiagnostics() {
053                return true;
054            }
055        };
056    
057        void report(@NotNull Diagnostic diagnostic);
058        boolean wantsDiagnostics();
059    }