/*
* Copyright 2012-2014 Institut National des Sciences Appliquées de Lyon (INSA-Lyon)
*
* 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 fr.insalyon.citi.golo.runtime;
import java.lang.invoke.CallSite;
import java.lang.invoke.ConstantCallSite;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import static fr.insalyon.citi.golo.runtime.Module.imports;
import static java.lang.invoke.MethodHandles.constant;
public class ClassReferenceSupport {
public static CallSite bootstrap(MethodHandles.Lookup caller, String name, MethodType type) throws ClassNotFoundException {
String className = name.replaceAll("#", "\\.");
Class<?> callerClass = caller.lookupClass();
ClassLoader classLoader = callerClass.getClassLoader();
Class<?> classRef = tryLoading(className, classLoader);
if (classRef == null) {
for (String importClassName : imports(callerClass)) {
classRef = tryLoading(importClassName + "." + className, classLoader);
if (classRef != null) {
break;
} else {
if (importClassName.endsWith(className)) {
classRef = tryLoading(importClassName, classLoader);
if (classRef != null) {
break;
}
}
}
}
}
if (classRef != null) {
return new ConstantCallSite(constant(Class.class, classRef));
}
throw new ClassNotFoundException("Dynamic resolution failed for name: " + name);
}
private static Class<?> tryLoading(String name, ClassLoader classLoader) {
try {
return Class.forName(name, true, classLoader);
} catch (ClassNotFoundException e) {
return null;
}
}
}