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
017package org.jetbrains.jet.codegen.context;
018
019import org.jetbrains.annotations.NotNull;
020import org.jetbrains.annotations.Nullable;
021import org.jetbrains.jet.codegen.OwnerKind;
022import org.jetbrains.jet.codegen.binding.MutableClosure;
023import org.jetbrains.jet.lang.descriptors.*;
024import org.jetbrains.jet.lang.resolve.java.JvmAbi;
025
026import java.util.HashMap;
027import java.util.Map;
028
029public abstract class FieldOwnerContext<T extends DeclarationDescriptor> extends CodegenContext<T> {
030
031    //default property name -> map<property descriptor -> bytecode name>
032    private Map<String, Map<PropertyDescriptor, String>> fieldNames = new HashMap<String, Map<PropertyDescriptor, String>>();
033
034    public FieldOwnerContext(
035            @NotNull T contextDescriptor,
036            @NotNull OwnerKind contextKind,
037            @Nullable CodegenContext parentContext,
038            @Nullable MutableClosure closure,
039            @Nullable ClassDescriptor thisDescriptor,
040            @Nullable LocalLookup expressionCodegen
041    ) {
042        super(contextDescriptor, contextKind, parentContext, closure, thisDescriptor, expressionCodegen);
043    }
044
045    public String getFieldName(PropertyDescriptor descriptor) {
046        return getFieldName(descriptor, false);
047    }
048
049    public String getFieldName(PropertyDescriptor descriptor, boolean isDelegated) {
050        assert descriptor.getKind() != CallableMemberDescriptor.Kind.FAKE_OVERRIDE;
051        boolean isExtension = descriptor.getReceiverParameter() != null;
052
053        return getFieldName(descriptor, isDelegated, isExtension);
054    }
055
056    private String getFieldName(PropertyDescriptor descriptor, boolean isDelegated, boolean isExtension) {
057        descriptor = descriptor.getOriginal();
058        String defaultPropertyName = JvmAbi.getDefaultPropertyName(descriptor.getName(), isDelegated, isExtension);
059
060        Map<PropertyDescriptor, String> descriptor2Name = fieldNames.get(defaultPropertyName);
061        if (descriptor2Name == null) {
062            descriptor2Name = new HashMap<PropertyDescriptor, String>();
063            fieldNames.put(defaultPropertyName, descriptor2Name);
064        }
065
066        String actualName = descriptor2Name.get(descriptor);
067        if (actualName == null) {
068            actualName = descriptor2Name.isEmpty() ? defaultPropertyName : defaultPropertyName + "$" + descriptor2Name.size();
069            descriptor2Name.put(descriptor, actualName);
070        }
071        return actualName;
072    }
073}