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 mLevel; 031 032 /** Keeps track of the number of counted events. */ 033 private int mCount; 034 035 /** 036 * Creates a new counter. 037 * @param aLevel the severity level events need to have, must be non-null. 038 */ 039 public SeverityLevelCounter(SeverityLevel aLevel) 040 { 041 if (aLevel == null) { 042 throw new IllegalArgumentException(); 043 } 044 mLevel = aLevel; 045 } 046 047 /** {@inheritDoc} */ 048 public void addError(AuditEvent aEvt) 049 { 050 if (mLevel.equals(aEvt.getSeverityLevel())) { 051 mCount++; 052 } 053 } 054 055 /** {@inheritDoc} */ 056 public void addException(AuditEvent aEvt, Throwable aThrowable) 057 { 058 if (SeverityLevel.ERROR.equals(mLevel)) { 059 mCount++; 060 } 061 } 062 063 /** {@inheritDoc} */ 064 public void auditStarted(AuditEvent aEvt) 065 { 066 mCount = 0; 067 } 068 069 /** {@inheritDoc} */ 070 public void fileStarted(AuditEvent aEvt) 071 { 072 } 073 074 /** {@inheritDoc} */ 075 public void auditFinished(AuditEvent aEvt) 076 { 077 } 078 079 /** {@inheritDoc} */ 080 public void fileFinished(AuditEvent aEvt) 081 { 082 } 083 084 /** 085 * Returns the number of counted events since audit started. 086 * @return the number of counted events since audit started. 087 */ 088 public int getCount() 089 { 090 return mCount; 091 } 092}