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/*
* Copyright (C) 2020 The Dagger Authors.
*
* 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 dagger.hilt.processor.internal.aliasof;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.ImmutableSetMultimap;
import com.squareup.javapoet.ClassName;
import dagger.hilt.processor.internal.ProcessorErrors;
import javax.lang.model.util.Elements;
/**
* Extracts a multimap of aliases annotated with {@link dagger.hilt.migration.AliasOf} mapping them
* to scopes they are alias of.
*/
public final class AliasOfs {
public static AliasOfs create(Elements elements, ImmutableSet<ClassName> defineComponentScopes) {
ImmutableSetMultimap.Builder<ClassName, ClassName> builder = ImmutableSetMultimap.builder();
AliasOfPropagatedDataMetadata.from(elements)
.forEach(
metadata -> {
ClassName defineComponentScopeName =
ClassName.get(metadata.defineComponentScopeElement());
ClassName aliasScopeName = ClassName.get(metadata.aliasElement());
ProcessorErrors.checkState(
defineComponentScopes.contains(defineComponentScopeName),
metadata.aliasElement(),
"The scope %s cannot be an alias for %s. You can only have aliases of a scope"
+ " defined directly on a @DefineComponent type.",
aliasScopeName,
defineComponentScopeName);
builder.put(defineComponentScopeName, aliasScopeName);
});
return new AliasOfs(builder.build());
}
private final ImmutableSetMultimap<ClassName, ClassName> defineComponentScopeToAliases;
private AliasOfs(ImmutableSetMultimap<ClassName, ClassName> defineComponentScopeToAliases) {
this.defineComponentScopeToAliases = defineComponentScopeToAliases;
}
public ImmutableSet<ClassName> getAliasesFor(ClassName defineComponentScope) {
return defineComponentScopeToAliases.get(defineComponentScope);
}
}
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