1 /*
   2  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 
  25 package org.graalvm.compiler.debug;
  26 
  27 import org.graalvm.compiler.options.Option;
  28 import org.graalvm.compiler.options.OptionKey;
  29 import org.graalvm.compiler.options.OptionType;
  30 import org.graalvm.compiler.options.OptionValues;
  31 
  32 /**
  33  * Utility for query whether assertions are enabled.
  34  */
  35 public class Assertions {
  36     /**
  37      * Determines if assertions are enabled. Strictly speaking, this may only be true for the
  38      * {@link Assertions} class but we assume assertions are enabled/disabled for Graal as a whole.
  39      */
  40     public static boolean assertionsEnabled() {
  41         boolean enabled = false;
  42         assert (enabled = true) == true;
  43         return enabled;
  44     }
  45 
  46     /**
  47      * Determines if detailed assertions are enabled. This requires that the normal assertions are
  48      * also enabled.
  49      *
  50      * @param values the current OptionValues that might define a value for DetailAsserts.
  51      */
  52     public static boolean detailedAssertionsEnabled(OptionValues values) {
  53         return assertionsEnabled() && Options.DetailedAsserts.getValue(values);
  54     }
  55 
  56     // @formatter:off
  57     public static class Options {
  58 
  59         @Option(help = "Enable expensive assertions if normal assertions (i.e. -ea or -esa) are enabled.", type = OptionType.Debug)
  60         public static final OptionKey<Boolean> DetailedAsserts = new OptionKey<>(false);
  61 
  62     }
  63     // @formatter:on
  64 }