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BEGIN LICENSE BLOCK ***** Version: EPL 1.0/GPL 2.0/LGPL 2.1 The contents of this file are subject to the Eclipse Public License Version 1.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.eclipse.org/legal/epl-v10.html Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language governing rights and limitations under the License. Alternatively, the contents of this file may be used under the terms of either of the GNU General Public License Version 2 or later (the "GPL"), or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), in which case the provisions of the GPL or the LGPL are applicable instead of those above. If you wish to allow use of your version of this file only under the terms of either the GPL or the LGPL, and not to allow others to use your version of this file under the terms of the EPL, indicate your decision by deleting the provisions above and replace them with the notice and other provisions required by the GPL or the LGPL. If you do not delete the provisions above, a recipient may use your version of this file under the terms of any one of the EPL, the GPL or the LGPL. END LICENSE BLOCK ***
package org.jruby.runtime.opto;
A tuple representing the data needed to verify a cached constant:
  • The value of the constant
  • The generation of the constant's invalidator at the time of caching
  • The constant's invalidator
  • (Optional) the hashcode of the module form which the constant was cache
  • public class ConstantCache {
        public final IRubyObject value;
        public final Object generation;
        public final Invalidator invalidator;
        public final int id;

        
    Construct a new ConstantCache with the given elements.

    Parameters:
    value
    generation
    invalidator
    targetHash
        public ConstantCache(IRubyObject valueObject generationInvalidator invalidatorint targetHash) {
            this. = value;
            this. = generation;
            this. = invalidator;
            this. = targetHash;
        }

        
    Construct a new ConstantCache with the given elements.

    Parameters:
    value
    generation
    invalidator
        public ConstantCache(IRubyObject valueObject generationInvalidator invalidator) {
            this(valuegenerationinvalidator, -1);
        }

        
    Check if the given ConstantCache is non-null and valid, given the target module. This method is static to ensure it is inlinable as trivially as possible.
        public static boolean isCachedFrom(RubyModule targetConstantCache cache) {
            return cache != null
                    && cache.value != null
                    && cache.generation == cache.invalidator.getData()
                    && cache.id == target.id;
        }

        
    Check if the given ConstantCache is non-null and valid. This method is static to ensure it is inlinable as trivially as possible.
        public static boolean isCached(ConstantCache cache) {
            return cache != null
                    && cache.value != null
                    && cache.generation == cache.invalidator.getData();
        }
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