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