73fa99ae86
Reviewed-by: darcy
161 lines
4.1 KiB
Java
161 lines
4.1 KiB
Java
/*
|
|
* Copyright (c) 2011, 2016, 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.
|
|
*
|
|
* 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 toolbox;
|
|
|
|
import java.util.function.Supplier;
|
|
|
|
/**
|
|
* Simple facility for unconditional assertions.
|
|
* The methods in this class are described in terms of equivalent assert
|
|
* statements, assuming that assertions have been enabled.
|
|
*/
|
|
public class Assert {
|
|
/** Equivalent to
|
|
* assert cond;
|
|
*/
|
|
public static void check(boolean cond) {
|
|
if (!cond)
|
|
error();
|
|
}
|
|
|
|
/** Equivalent to
|
|
* assert (o == null);
|
|
*/
|
|
public static void checkNull(Object o) {
|
|
if (o != null)
|
|
error();
|
|
}
|
|
|
|
/** Equivalent to
|
|
* assert (t != null); return t;
|
|
*/
|
|
public static <T> T checkNonNull(T t) {
|
|
if (t == null)
|
|
error();
|
|
return t;
|
|
}
|
|
|
|
/** Equivalent to
|
|
* assert cond : value;
|
|
*/
|
|
public static void check(boolean cond, int value) {
|
|
if (!cond)
|
|
error(String.valueOf(value));
|
|
}
|
|
|
|
/** Equivalent to
|
|
* assert cond : value;
|
|
*/
|
|
public static void check(boolean cond, long value) {
|
|
if (!cond)
|
|
error(String.valueOf(value));
|
|
}
|
|
|
|
/** Equivalent to
|
|
* assert cond : value;
|
|
*/
|
|
public static void check(boolean cond, Object value) {
|
|
if (!cond)
|
|
error(String.valueOf(value));
|
|
}
|
|
|
|
/** Equivalent to
|
|
* assert cond : msg;
|
|
*/
|
|
public static void check(boolean cond, String msg) {
|
|
if (!cond)
|
|
error(msg);
|
|
}
|
|
|
|
/** Equivalent to
|
|
* assert cond : msg.get();
|
|
* Note: message string is computed lazily.
|
|
*/
|
|
public static void check(boolean cond, Supplier<String> msg) {
|
|
if (!cond)
|
|
error(msg.get());
|
|
}
|
|
|
|
/** Equivalent to
|
|
* assert (o == null) : value;
|
|
*/
|
|
public static void checkNull(Object o, Object value) {
|
|
if (o != null)
|
|
error(String.valueOf(value));
|
|
}
|
|
|
|
/** Equivalent to
|
|
* assert (o == null) : msg;
|
|
*/
|
|
public static void checkNull(Object o, String msg) {
|
|
if (o != null)
|
|
error(msg);
|
|
}
|
|
|
|
/** Equivalent to
|
|
* assert (o == null) : msg.get();
|
|
* Note: message string is computed lazily.
|
|
*/
|
|
public static void checkNull(Object o, Supplier<String> msg) {
|
|
if (o != null)
|
|
error(msg.get());
|
|
}
|
|
|
|
/** Equivalent to
|
|
* assert (o != null) : msg;
|
|
*/
|
|
public static <T> T checkNonNull(T t, String msg) {
|
|
if (t == null)
|
|
error(msg);
|
|
return t;
|
|
}
|
|
|
|
/** Equivalent to
|
|
* assert (o != null) : msg.get();
|
|
* Note: message string is computed lazily.
|
|
*/
|
|
public static <T> T checkNonNull(T t, Supplier<String> msg) {
|
|
if (t == null)
|
|
error(msg.get());
|
|
return t;
|
|
}
|
|
|
|
/** Equivalent to
|
|
* assert false;
|
|
*/
|
|
public static void error() {
|
|
throw new AssertionError();
|
|
}
|
|
|
|
/** Equivalent to
|
|
* assert false : msg;
|
|
*/
|
|
public static void error(String msg) {
|
|
throw new AssertionError(msg);
|
|
}
|
|
|
|
/** Prevent instantiation. */
|
|
private Assert() { }
|
|
}
|