/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.drill.exec.expr.fn;
import java.util.List;
import org.codehaus.janino.Java;
import org.codehaus.janino.Java.CompilationUnit.SingleStaticImportDeclaration;
import org.codehaus.janino.Java.CompilationUnit.SingleTypeImportDeclaration;
import org.codehaus.janino.Java.CompilationUnit.StaticImportOnDemandDeclaration;
import org.codehaus.janino.Java.CompilationUnit.TypeImportOnDemandDeclaration;
import org.codehaus.janino.util.Traverser;
import com.google.common.collect.Lists;
public class ImportGrabber{
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(ImportGrabber.class);
private List<String> imports = Lists.newArrayList();
private final ImportFinder finder = new ImportFinder();
private ImportGrabber() {
}
public class ImportFinder extends Traverser{
@Override
public void traverseSingleTypeImportDeclaration(SingleTypeImportDeclaration stid) {
imports.add(stid.toString());
}
@Override
public void traverseSingleStaticImportDeclaration(SingleStaticImportDeclaration stid) {
imports.add(stid.toString());
}
@Override
public void traverseTypeImportOnDemandDeclaration(TypeImportOnDemandDeclaration tiodd) {
imports.add(tiodd.toString());
}
@Override
public void traverseStaticImportOnDemandDeclaration(StaticImportOnDemandDeclaration siodd) {
imports.add(siodd.toString());
}
}
public static List<String> getMethods(Java.CompilationUnit cu){
ImportGrabber visitor = new ImportGrabber();
cu.getPackageMemberTypeDeclarations()[0].accept(visitor.finder.comprehensiveVisitor());
return visitor.imports;
}
}