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 com.google.dart.compiler.backend.js.ast.JsExpression;
020    import com.google.dart.compiler.backend.js.ast.JsName;
021    import com.google.dart.compiler.backend.js.ast.JsNameRef;
022    import org.jetbrains.annotations.NotNull;
023    import org.jetbrains.annotations.Nullable;
024    import org.jetbrains.kotlin.js.translate.utils.JsAstUtils;
025    
026    public class TemporaryVariable {
027    
028        /*package*/ static TemporaryVariable create(@NotNull JsName temporaryName, @Nullable JsExpression initExpression) {
029            return new TemporaryVariable(temporaryName, initExpression == null ? null : JsAstUtils.assignment(temporaryName.makeRef(), initExpression));
030        }
031    
032        @Nullable
033        private final JsExpression assignmentExpression;
034        @NotNull
035        private final JsName variableName;
036    
037        protected TemporaryVariable(@NotNull JsName temporaryName, @Nullable JsExpression assignmentExpression) {
038            this.variableName = temporaryName;
039            this.assignmentExpression = assignmentExpression;
040        }
041    
042        @NotNull
043        public JsNameRef reference() {
044            return variableName.makeRef();
045        }
046    
047        @NotNull
048        public JsName name() {
049            return variableName;
050        }
051    
052        @NotNull
053        public JsExpression assignmentExpression() {
054            assert assignmentExpression != null;
055            return assignmentExpression;
056        }
057    }