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.codegen;
018    
019    import com.intellij.openapi.application.ApplicationManager;
020    import com.intellij.openapi.util.Computable;
021    import com.intellij.psi.PsiElement;
022    import org.jetbrains.annotations.NotNull;
023    import org.jetbrains.annotations.Nullable;
024    import org.jetbrains.jet.lang.diagnostics.DiagnosticUtils;
025    
026    public class CompilationException extends RuntimeException {
027        private final PsiElement element;
028    
029        public CompilationException(@NotNull String message, @Nullable Throwable cause, @NotNull PsiElement element) {
030            super(getMessage(message, cause, element), cause);
031            this.element = element;
032        }
033    
034        @NotNull
035        public PsiElement getElement() {
036            return element;
037        }
038    
039    
040        private static String where(@NotNull Throwable cause) {
041            StackTraceElement[] stackTrace = cause.getStackTrace();
042            if (stackTrace != null && stackTrace.length > 0) {
043                return stackTrace[0].getFileName() + ":" + stackTrace[0].getLineNumber();
044            }
045            return "unknown";
046        }
047    
048        public static String getMessage(@NotNull final String message, @Nullable final Throwable cause, @NotNull final PsiElement element) {
049            return ApplicationManager.getApplication().runReadAction(new Computable<String>() {
050                @Override
051                public String compute() {
052                    StringBuilder result =
053                            new StringBuilder("Back-end (JVM) Internal error: ").append(message).append("\n");
054                    if (cause != null) {
055                        String causeMessage = cause.getMessage();
056                        result.append("Cause: ").append(causeMessage == null ? cause.toString() : causeMessage).append("\n");
057                    }
058                    result.append("File being compiled and position: ").append(DiagnosticUtils.atLocation(element)).append("\n");
059                    result.append("PsiElement: ").append(element.getText()).append("\n");
060                    if (cause != null) {
061                        result.append("The root cause was thrown at: ").append(where(cause));
062                    }
063    
064                    return result.toString();
065                }
066            });
067        }
068    }