/*
* Copyright 2017-present Facebook, Inc.
*
* 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.facebook.buck.jvm.java.abi;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.List;
import javax.lang.model.SourceVersion;
import javax.lang.model.element.TypeElement;
import javax.lang.model.util.Elements;
import org.objectweb.asm.ClassVisitor;
/** An interface for reading and listing resources and classes in a library. */
interface LibraryReader extends AutoCloseable {
static LibraryReader of(Path path) {
if (Files.isDirectory(path)) {
return new DirectoryReader(path);
} else {
return new JarReader(path);
}
}
static LibraryReader of(
SourceVersion targetVersion, Elements elements, Iterable<TypeElement> topLevelTypes) {
return new TypeElementsReader(targetVersion, elements, topLevelTypes);
}
List<Path> getRelativePaths() throws IOException;
InputStream openResourceFile(Path relativePath) throws IOException;
void visitClass(Path relativePath, ClassVisitor cv) throws IOException;
@Override
void close() throws IOException;
default boolean isResource(Path path) {
return !isClass(path);
}
default boolean isClass(Path path) {
return path.toString().endsWith(".class");
}
}