001/** 002 * Logback: the reliable, generic, fast and flexible logging framework. 003 * Copyright (C) 1999-2015, QOS.ch. All rights reserved. 004 * 005 * This program and the accompanying materials are dual-licensed under 006 * either the terms of the Eclipse Public License v1.0 as published by 007 * the Eclipse Foundation 008 * 009 * or (per the licensee's choosing) 010 * 011 * under the terms of the GNU Lesser General Public License version 2.1 012 * as published by the Free Software Foundation. 013 */ 014package ch.qos.logback.classic.spi; 015 016public class STEUtil { 017 018 static int UNUSED_findNumberOfCommonFrames(StackTraceElement[] steArray, StackTraceElement[] otherSTEArray) { 019 if (otherSTEArray == null) { 020 return 0; 021 } 022 023 int steIndex = steArray.length - 1; 024 int parentIndex = otherSTEArray.length - 1; 025 int count = 0; 026 while (steIndex >= 0 && parentIndex >= 0) { 027 if (steArray[steIndex].equals(otherSTEArray[parentIndex])) { 028 count++; 029 } else { 030 break; 031 } 032 steIndex--; 033 parentIndex--; 034 } 035 return count; 036 } 037 038 static int findNumberOfCommonFrames(StackTraceElement[] steArray, StackTraceElementProxy[] otherSTEPArray) { 039 if (otherSTEPArray == null) { 040 return 0; 041 } 042 043 int steIndex = steArray.length - 1; 044 int parentIndex = otherSTEPArray.length - 1; 045 int count = 0; 046 while (steIndex >= 0 && parentIndex >= 0) { 047 if (steArray[steIndex].equals(otherSTEPArray[parentIndex].ste)) { 048 count++; 049 } else { 050 break; 051 } 052 steIndex--; 053 parentIndex--; 054 } 055 return count; 056 } 057}