package org.springframework.boot.configurationprocessor.fieldvalues.javac;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import javax.annotation.processing.ProcessingEnvironment;
import javax.lang.model.element.Element;
final class Trees extends ReflectionWrapper {
private Trees(Object instance) {
super("com.sun.source.util.Trees", instance);
}
Tree getTree(Element element) throws Exception {
Object tree = findMethod("getTree", Element.class).invoke(getInstance(), element);
return (tree != null) ? new Tree(tree) : null;
}
static Trees instance(ProcessingEnvironment env) throws Exception {
try {
ClassLoader classLoader = env.getClass().getClassLoader();
Class<?> type = findClass(classLoader, "com.sun.source.util.Trees");
Method method = findMethod(type, "instance", ProcessingEnvironment.class);
return new Trees(method.invoke(null, env));
}
catch (Exception ex) {
return instance(unwrap(env));
}
}
private static ProcessingEnvironment unwrap(ProcessingEnvironment wrapper) throws Exception {
Field delegateField = wrapper.getClass().getDeclaredField("delegate");
delegateField.setAccessible(true);
return (ProcessingEnvironment) delegateField.get(wrapper);
}
}