001    /*
002     * Copyright 2010-2013 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;
018    
019    import org.jetbrains.jet.lang.descriptors.ValueParameterDescriptor;
020    import org.jetbrains.jet.lang.psi.JetParameter;
021    
022    import static org.jetbrains.jet.lang.resolve.DescriptorToSourceUtils.descriptorToDeclaration;
023    
024    public interface DefaultParameterValueLoader {
025    
026        StackValue genValue(ValueParameterDescriptor descriptor, ExpressionCodegen codegen);
027    
028        DefaultParameterValueLoader DEFAULT = new DefaultParameterValueLoader() {
029            @Override
030            public StackValue genValue(
031                    ValueParameterDescriptor descriptor,
032                    ExpressionCodegen codegen
033            ) {
034                JetParameter jetParameter = (JetParameter) descriptorToDeclaration(descriptor);
035                assert jetParameter != null;
036                return codegen.gen(jetParameter.getDefaultValue());
037            }
038        };
039    }
040