/**
* Logback: the reliable, generic, fast and flexible logging framework.
* Copyright (C) 1999-2013, QOS.ch. All rights reserved.
*
* This program and the accompanying materials are dual-licensed under
* either the terms of the Eclipse Public License v1.0 as published by
* the Eclipse Foundation
*
* or (per the licensee's choosing)
*
* under the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation.
*/
package ch.qos.logback.classic.util;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
public class TeztHelper {
private static final Method ADD_SUPPRESSED_METHOD;
static {
Method method = null;
try {
method = Throwable.class.getMethod("addSuppressed", Throwable.class);
} catch (NoSuchMethodException e) {
// ignore, will get thrown in Java < 7
}
ADD_SUPPRESSED_METHOD = method;
}
public static boolean suppressedSupported() {
return ADD_SUPPRESSED_METHOD != null;
}
public static void addSuppressed(Throwable outer, Throwable suppressed) throws InvocationTargetException, IllegalAccessException {
if(suppressedSupported()) {
ADD_SUPPRESSED_METHOD.invoke(outer, suppressed);
}
}
static public Throwable makeNestedException(int level) {
if (level == 0) {
return new Exception("nesting level=" + level);
}
Throwable cause = makeNestedException(level - 1);
return new Exception("nesting level =" + level, cause);
}
/**
* Usage:
* <pre>
* String s = "123";
* positionOf("1").in(s) < positionOf("3").in(s)
* </pre>
*
* @param pattern Plain text to be found
* @return StringPosition fluent interface
*/
public static StringPosition positionOf(String pattern) {
return new StringPosition(pattern);
}
public static class StringPosition {
private final String pattern;
public StringPosition(String pattern) {
this.pattern = pattern;
}
public int in(String s) {
final int position = s.indexOf(pattern);
if(position < 0)
throw new IllegalArgumentException("String '" + pattern + "' not found in: '" + s + "'");
return position;
}
}
}