/**
* 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.
*/
/**
* This copy of Woodstox XML processor is licensed under the
* Apache (Software) License, version 2.0 ("the License").
* See the License for details about distribution rights, and the
* specific rights regarding derivate works.
*
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/
*
* A copy is also included in the downloadable source code package
* containing Woodstox, in file "ASL2.0", under the same directory
* as this file.
*/
package org.jooby.internal.spec;
import java.util.LinkedHashSet;
import java.util.Set;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.ast.ImportDeclaration;
import com.github.javaparser.ast.Node;
import com.github.javaparser.ast.PackageDeclaration;
import com.github.javaparser.ast.body.ClassOrInterfaceDeclaration;
import com.github.javaparser.ast.expr.NameExpr;
import com.github.javaparser.ast.expr.QualifiedNameExpr;
import com.github.javaparser.ast.visitor.GenericVisitorAdapter;
import com.github.javaparser.ast.visitor.VoidVisitorAdapter;
public class DependencyCollector extends VoidVisitorAdapter<Object> {
private static class NameCollector extends GenericVisitorAdapter<String, Object> {
@Override
public String visit(final QualifiedNameExpr n, final Object arg) {
return n.toStringWithoutComments();
}
@Override
public String visit(final NameExpr n, final Object arg) {
return n.getName();
}
@Override
public String visit(final ClassOrInterfaceDeclaration n, final Object arg) {
StringBuilder name = new StringBuilder();
Node it = n.getParentNode();
while (it instanceof ClassOrInterfaceDeclaration) {
ClassOrInterfaceDeclaration superclass = (ClassOrInterfaceDeclaration) it;
name.append(superclass.getName()).append(".");
it = it.getParentNode();
}
if (it instanceof CompilationUnit) {
if (name.length() == 0) {
name.append(((CompilationUnit) it).getPackage().getName().toString()).append(".");
} else {
name.insert(0, ((CompilationUnit) it).getPackage().getName().toString() + ".");
}
}
name.append(n.getName());
return name.toString();
}
}
private Set<String> packages = new LinkedHashSet<>();
public Set<String> accept(final Node node) {
packages.add("java.lang");
if (node != null) {
root(node).accept(this, null);
}
return packages;
}
@Override
public void visit(final PackageDeclaration n, final Object arg) {
packages.add(n.accept(new NameCollector(), arg));
}
@Override
public void visit(final ImportDeclaration n, final Object arg) {
packages.add(n.accept(new NameCollector(), arg));
}
@Override
public void visit(final ClassOrInterfaceDeclaration n, final Object arg) {
packages.add(n.accept(new NameCollector(), arg));
super.visit(n, arg);
}
private Node root(final Node n) {
Node prev = n;
Node it = n;
while (it != null) {
prev = it;
it = it.getParentNode();
}
return prev;
}
}