001    /*
002     * Copyright 2010-2014 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.jet.codegen.when;
018    
019    import org.jetbrains.annotations.NotNull;
020    import org.jetbrains.jet.codegen.ExpressionCodegen;
021    import org.jetbrains.jet.lang.psi.JetWhenExpression;
022    import org.jetbrains.jet.lang.resolve.constants.CompileTimeConstant;
023    import org.jetbrains.org.objectweb.asm.Label;
024    
025    public class IntegralConstantsSwitchCodegen extends SwitchCodegen {
026        public IntegralConstantsSwitchCodegen(
027                @NotNull JetWhenExpression expression,
028                boolean isStatement,
029                @NotNull ExpressionCodegen codegen
030        ) {
031            super(expression, isStatement, codegen);
032        }
033    
034        @Override
035        protected void processConstant(
036                @NotNull CompileTimeConstant constant, @NotNull Label entryLabel
037        ) {
038            assert constant.getValue() != null : "constant value should not be null";
039            int value = (constant.getValue() instanceof Number)
040                        ? ((Number) constant.getValue()).intValue()
041                        : ((Character) constant.getValue()).charValue();
042    
043            putTransitionOnce(value, entryLabel);
044        }
045    }