/*
* Copyright 2003-2017 JetBrains s.r.o.
*
* 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 jetbrains.mps.reloading;
import jetbrains.mps.module.ReloadableModule;
import jetbrains.mps.util.JavaNameUtil;
import jetbrains.mps.util.annotation.ToRemove;
import org.jetbrains.mps.openapi.model.SNode;
import org.jetbrains.mps.openapi.module.SModule;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
// TODO Remove from core, used in bl only. AP
/**
* @deprecated Deprecated along with bl.Expression.eval() which seems to be only client of this code. Drop it once eval() is gone.
*/
@Deprecated
@ToRemove(version = 2017.1)
public final class ReflectionUtil {
private ReflectionUtil() {
}
public static Class forName(SModule module, SNode classNode) {
if (!(module instanceof ReloadableModule && ((ReloadableModule) module).willLoad())) {
throw new IllegalStateException("Module: " + module + "; class node: " + classNode);
}
String dottedName = classNode.getName();
String dollarName = "null";
if (dottedName != null) {
dollarName = dottedName.replaceAll("\\.", "\\$");
}
String className = JavaNameUtil.fqClassName(classNode, dollarName);
try {
return ((ReloadableModule) module).getClass(className);
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
}
}
public static Method getMethod(SModule module, SNode classNode, String methodName, Class[] parameterTypes) {
Class<?> aClass = forName(module, classNode);
try {
return aClass.getMethod(methodName, parameterTypes);
} catch (NoSuchMethodException e) {
throw new RuntimeException();
}
}
public static Object staticInvoke(Method method, Object[] args) {
return invoke(method, null, args);
}
public static Object invoke(Method method, Object object, Object[] args) {
try {
return method.invoke(object, args);
} catch (IllegalAccessException e) {
throw new RuntimeException();
} catch (InvocationTargetException e) {
throw new RuntimeException(method + " " + object, e);
}
}
public static Enum getEnum(SModule module, SNode classNode, String enumConstantName) {
Enum result = null;
Class aClass = forName(module, classNode);
Enum[] enumConstants = (Enum[]) aClass.getEnumConstants();
for (Enum enumConstant : enumConstants) {
String name = enumConstant.name();
if (name.equals(enumConstantName)) {
result = enumConstant;
break;
}
}
return result;
}
public static Object getConstant(SModule module, SNode classNode, String constantName) {
Class aClass = forName(module, classNode);
Field field;
try {
field = aClass.getField(constantName);
} catch (NoSuchFieldException e) {
throw new RuntimeException();
}
try {
return field.get(null);
} catch (IllegalAccessException e) {
throw new RuntimeException();
}
}
}