| /* |
| * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.nashorn.internal.runtime; |
| |
| import static jdk.nashorn.internal.runtime.ECMAErrors.rangeError; |
| |
| import java.io.PrintWriter; |
| import jdk.nashorn.internal.parser.Token; |
| |
| /** |
| * Handles JavaScript error reporting. |
| */ |
| public class ErrorManager { |
| // TODO - collect and sort/collapse error messages. |
| // TODO - property based error messages. |
| /** Reporting writer. */ |
| private final PrintWriter writer; |
| |
| /** Error count. */ |
| private int errors; |
| |
| /** Warning count */ |
| private int warnings; |
| |
| /** Limit of the number of messages. */ |
| private int limit; |
| |
| /** Treat warnings as errors. */ |
| private boolean warningsAsErrors; |
| |
| /** |
| * Constructor |
| */ |
| public ErrorManager() { |
| this(new PrintWriter(System.err, true)); //bootstrapping, context may not be initialized |
| } |
| |
| /** |
| * Constructor. |
| * @param writer I/O writer to report on. |
| */ |
| public ErrorManager(final PrintWriter writer) { |
| this.writer = writer; |
| this.limit = 100; |
| this.warningsAsErrors = false; |
| } |
| |
| /** |
| * Check to see if number of errors exceed limit. |
| */ |
| private void checkLimit() { |
| int count = errors; |
| |
| if (warningsAsErrors) { |
| count += warnings; |
| } |
| |
| if (limit != 0 && count > limit) { |
| throw rangeError("too.many.errors", Integer.toString(limit)); |
| } |
| } |
| |
| /** |
| * Format an error message to include source and line information. |
| * @param message Error message string. |
| * @param source Source file information. |
| * @param line Source line number. |
| * @param column Source column number. |
| * @param token Offending token descriptor. |
| * @return formatted string |
| */ |
| public static String format(final String message, final Source source, final int line, final int column, final long token) { |
| final String eoln = System.lineSeparator(); |
| final int position = Token.descPosition(token); |
| final StringBuilder sb = new StringBuilder(); |
| |
| // Source description and message. |
| sb.append(source.getName()). |
| append(':'). |
| append(line). |
| append(':'). |
| append(column). |
| append(' '). |
| append(message). |
| append(eoln); |
| |
| // Source content. |
| final String sourceLine = source.getSourceLine(position); |
| sb.append(sourceLine).append(eoln); |
| |
| // Pointer to column. |
| for (int i = 0; i < column; i++) { |
| if (i < sourceLine.length() && sourceLine.charAt(i) == '\t') { |
| sb.append('\t'); |
| } else { |
| sb.append(' '); |
| } |
| } |
| |
| sb.append('^'); |
| // Use will append eoln. |
| // buffer.append(eoln); |
| |
| return sb.toString(); |
| } |
| |
| /** |
| * Report an error using information provided by the ParserException |
| * |
| * @param e ParserException object |
| */ |
| |
| public void error(final ParserException e) { |
| error(e.getMessage()); |
| } |
| |
| /** |
| * Report an error message provided |
| * |
| * @param message Error message string. |
| */ |
| public void error(final String message) { |
| writer.println(message); |
| writer.flush(); |
| errors++; |
| checkLimit(); |
| } |
| |
| /** |
| * Report a warning using information provided by the ParserException |
| * |
| * @param e ParserException object |
| */ |
| public void warning(final ParserException e) { |
| warning(e.getMessage()); |
| } |
| |
| /** |
| * Report a warning message provided |
| * |
| * @param message Error message string. |
| */ |
| public void warning(final String message) { |
| writer.println(message); |
| writer.flush(); |
| warnings++; |
| checkLimit(); |
| } |
| |
| /** |
| * Test to see if errors have occurred. |
| * @return True if errors. |
| */ |
| public boolean hasErrors() { |
| return errors != 0; |
| } |
| |
| /** |
| * Get the message limit |
| * @return max number of messages |
| */ |
| public int getLimit() { |
| return limit; |
| } |
| |
| /** |
| * Set the message limit |
| * @param limit max number of messages |
| */ |
| public void setLimit(final int limit) { |
| this.limit = limit; |
| } |
| |
| /** |
| * Check whether warnings should be treated like errors |
| * @return true if warnings should be treated like errors |
| */ |
| public boolean isWarningsAsErrors() { |
| return warningsAsErrors; |
| } |
| |
| /** |
| * Set warnings to be treated as errors |
| * @param warningsAsErrors true if warnings should be treated as errors, false otherwise |
| */ |
| public void setWarningsAsErrors(final boolean warningsAsErrors) { |
| this.warningsAsErrors = warningsAsErrors; |
| } |
| |
| /** |
| * Get the number of errors |
| * @return number of errors |
| */ |
| public int getNumberOfErrors() { |
| return errors; |
| } |
| |
| /** |
| * Get number of warnings |
| * @return number of warnings |
| */ |
| public int getNumberOfWarnings() { |
| return warnings; |
| } |
| |
| /** |
| * Clear warnings and error count. |
| */ |
| void reset() { |
| warnings = 0; |
| errors = 0; |
| } |
| } |