001    /*
002     * Copyright 2010-2015 JetBrains s.r.o.
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    
017    package org.jetbrains.kotlin.js.translate.context;
018    
019    import org.jetbrains.kotlin.js.backend.ast.JsExpression;
020    import org.jetbrains.kotlin.js.backend.ast.JsName;
021    import org.jetbrains.annotations.NotNull;
022    
023    public final class TemporaryConstVariable extends TemporaryVariable{
024        private boolean initialized = false;
025    
026        public TemporaryConstVariable(@NotNull JsName variableName, @NotNull JsExpression assignmentExpression) {
027            super(variableName, assignmentExpression);
028        }
029    
030        @NotNull
031        public JsExpression value() {
032            if (initialized) {
033                return reference();
034            }
035            initialized = true;
036            return assignmentExpression();
037        }
038    }