--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/util/Assert.java Sun Aug 17 15:52:32 2014 +0100
@@ -0,0 +1,137 @@
+/*
+ * Copyright (c) 2011, 2014, 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. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 com.sun.tools.javac.util;
+
+/**
+ * Simple facility for unconditional assertions.
+ * The methods in this class are described in terms of equivalent assert
+ * statements, assuming that assertions have been enabled.
+ *
+ * <p><b>This is NOT part of any supported API.
+ * If you write code that depends on this, you do so at your own risk.
+ * This code and its internal interfaces are subject to change or
+ * deletion without notice.</b>
+ */
+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 (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;
+ */
+ public static <T> T checkNonNull(T t, String msg) {
+ if (t == null)
+ error(msg);
+ 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() { }
+}