org.jetbrains.jet.lang.resolve.java.kotlinSignature.SignaturesUtil.java Source code

Introduction

Here is the source code for org.jetbrains.jet.lang.resolve.java.kotlinSignature.SignaturesUtil.java

Source

/*
 * Copyright 2010-2013 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jetbrains.jet.lang.resolve.java.kotlinSignature;

import com.google.common.collect.Maps;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.jet.lang.descriptors.DeclarationDescriptor;
import org.jetbrains.jet.lang.descriptors.TypeParameterDescriptor;
import org.jetbrains.jet.lang.descriptors.impl.TypeParameterDescriptorImpl;
import org.jetbrains.jet.lang.types.TypeConstructor;
import org.jetbrains.jet.lang.types.TypeProjection;
import org.jetbrains.jet.lang.types.TypeSubstitutor;

import java.util.List;
import java.util.Map;

public class SignaturesUtil {
    public static Map<TypeParameterDescriptor, TypeParameterDescriptorImpl> recreateTypeParametersAndReturnMapping(
            @NotNull List<TypeParameterDescriptor> originalParameters, @Nullable DeclarationDescriptor newOwner) {
        Map<TypeParameterDescriptor, TypeParameterDescriptorImpl> result = Maps.newLinkedHashMap(); // save order of type parameters
        for (TypeParameterDescriptor typeParameter : originalParameters) {
            result.put(typeParameter,
                    TypeParameterDescriptorImpl.createForFurtherModification(
                            newOwner == null ? typeParameter.getContainingDeclaration() : newOwner,
                            typeParameter.getAnnotations(), typeParameter.isReified(), typeParameter.getVariance(),
                            typeParameter.getName(), typeParameter.getIndex()));
        }
        return result;
    }

    public static TypeSubstitutor createSubstitutorForTypeParameters(
            @NotNull Map<TypeParameterDescriptor, TypeParameterDescriptorImpl> originalToAltTypeParameters) {
        Map<TypeConstructor, TypeProjection> typeSubstitutionContext = Maps.newHashMap();
        for (Map.Entry<TypeParameterDescriptor, TypeParameterDescriptorImpl> originalToAltTypeParameter : originalToAltTypeParameters
                .entrySet()) {
            typeSubstitutionContext.put(originalToAltTypeParameter.getKey().getTypeConstructor(),
                    new TypeProjection(originalToAltTypeParameter.getValue().getDefaultType()));
        }
        return TypeSubstitutor.create(typeSubstitutionContext);
    }

    private SignaturesUtil() {
    }
}