001//////////////////////////////////////////////////////////////////////////////// 002// checkstyle: Checks Java source code for adherence to a set of rules. 003// Copyright (C) 2001-2014 Oliver Burn 004// 005// This library is free software; you can redistribute it and/or 006// modify it under the terms of the GNU Lesser General Public 007// License as published by the Free Software Foundation; either 008// version 2.1 of the License, or (at your option) any later version. 009// 010// This library is distributed in the hope that it will be useful, 011// but WITHOUT ANY WARRANTY; without even the implied warranty of 012// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013// Lesser General Public License for more details. 014// 015// You should have received a copy of the GNU Lesser General Public 016// License along with this library; if not, write to the Free Software 017// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 018//////////////////////////////////////////////////////////////////////////////// 019package com.puppycrawl.tools.checkstyle.api; 020 021/** 022 * An audit listener that counts how many {@link AuditEvent AuditEvents} 023 * of a given severity have been generated. 024 * 025 * @author lkuehne 026 */ 027public final class SeverityLevelCounter implements AuditListener 028{ 029 /** The severity level to watch out for. */ 030 private SeverityLevel level; 031 032 /** Keeps track of the number of counted events. */ 033 private int count; 034 035 /** 036 * Creates a new counter. 037 * @param level the severity level events need to have, must be non-null. 038 */ 039 public SeverityLevelCounter(SeverityLevel level) 040 { 041 if (level == null) { 042 throw new IllegalArgumentException(); 043 } 044 this.level = level; 045 } 046 047 /** {@inheritDoc} */ 048 @Override 049 public void addError(AuditEvent evt) 050 { 051 if (level.equals(evt.getSeverityLevel())) { 052 count++; 053 } 054 } 055 056 /** {@inheritDoc} */ 057 @Override 058 public void addException(AuditEvent evt, Throwable throwable) 059 { 060 if (SeverityLevel.ERROR.equals(level)) { 061 count++; 062 } 063 } 064 065 /** {@inheritDoc} */ 066 @Override 067 public void auditStarted(AuditEvent evt) 068 { 069 count = 0; 070 } 071 072 /** {@inheritDoc} */ 073 @Override 074 public void fileStarted(AuditEvent evt) 075 { 076 } 077 078 /** {@inheritDoc} */ 079 @Override 080 public void auditFinished(AuditEvent evt) 081 { 082 } 083 084 /** {@inheritDoc} */ 085 @Override 086 public void fileFinished(AuditEvent evt) 087 { 088 } 089 090 /** 091 * Returns the number of counted events since audit started. 092 * @return the number of counted events since audit started. 093 */ 094 public int getCount() 095 { 096 return count; 097 } 098}