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 com.google.common.collect.Maps;
020    import com.intellij.openapi.util.Factory;
021    import com.intellij.openapi.util.Pair;
022    import com.intellij.util.containers.ContainerUtil;
023    import org.jetbrains.annotations.NotNull;
024    import org.jetbrains.asm4.Type;
025    import org.jetbrains.jet.codegen.state.GenerationState;
026    import org.jetbrains.jet.lang.psi.JetFile;
027    import org.jetbrains.jet.lang.resolve.java.descriptor.ClassDescriptorFromJvmBytecode;
028    
029    import java.util.Map;
030    
031    public class SamWrapperClasses {
032        private final GenerationState state;
033    
034        private final Map<Pair<ClassDescriptorFromJvmBytecode, JetFile>, Type> samInterfaceToWrapperClass = Maps.newHashMap();
035    
036        public SamWrapperClasses(GenerationState state) {
037            this.state = state;
038        }
039    
040        @NotNull
041        public Type getSamWrapperClass(@NotNull final ClassDescriptorFromJvmBytecode samInterface, @NotNull final JetFile file) {
042            return ContainerUtil.getOrCreate(samInterfaceToWrapperClass, Pair.create(samInterface, file),
043                                             new Factory<Type>() {
044                                                 @Override
045                                                 public Type create() {
046                                                     return new SamWrapperCodegen(state, samInterface, null).genWrapper(file);
047                                                 }
048                                             });
049        }
050    }