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/*
* Copyright 2016 Google Inc. All Rights Reserved.
*
* 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 com.google.turbine.binder.lookup;
import org.checkerframework.checker.nullness.qual.Nullable;
/**
* An index of canonical type names.
*
* <p>Used to resolve top-level qualified type names in the classpath, and the sources being
* compiled. Also provides lookup scopes for individual packages.
*
* <p>Only top-level classes are stored. Nested type names can't usually be assumed to be canonical
* (the qualifier may inherited the named type, rather than declaring it directly), so nested types
* are resolved separately with appropriate handling of non-canonical names. For bytecode we may end
* up storing desugared nested classes (e.g. {@code Map$Entry}), but we can't tell until the class
* file has been read and we have access to the InnerClasses attribtue.
*/
public interface TopLevelIndex {
/** Returns a scope to look up top-level qualified type names. */
Scope scope();
/** Returns a scope to look up members of the given package. */
@Nullable
PackageScope lookupPackage(Iterable<String> packagename);
}
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