| /* |
| * Copyright 2000-2009 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 com.intellij.util.xml; |
| |
| import com.intellij.openapi.progress.ProcessCanceledException; |
| import com.intellij.openapi.util.text.StringUtil; |
| import com.intellij.util.ReflectionUtil; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.*; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.List; |
| |
| /** |
| * @author peter |
| */ |
| public class DomReflectionUtil { |
| private DomReflectionUtil() { |
| } |
| |
| public static <T extends Annotation> T findAnnotationDFS(final Class<?> rawType, final Class<T> annotationType) { |
| T annotation = rawType.getAnnotation(annotationType); |
| if (annotation != null) return annotation; |
| |
| for (Class aClass : rawType.getInterfaces()) { |
| annotation = findAnnotationDFS(aClass, annotationType); |
| if (annotation != null) { |
| return annotation; |
| } |
| } |
| return null; |
| } |
| |
| public static boolean canHaveIsPropertyGetterPrefix(final Type type) { |
| return boolean.class.equals(type) || Boolean.class.equals(type) |
| || Boolean.class.equals(DomUtil.getGenericValueParameter(type)); |
| } |
| |
| public static JavaMethod[] getGetterMethods(final String[] path, final Class<? extends DomElement> startClass) { |
| final JavaMethod[] methods = new JavaMethod[path.length]; |
| Class aClass = startClass; |
| for (int i = 0; i < path.length; i++) { |
| final JavaMethod getter = findGetter(aClass, path[i]); |
| assert getter != null : "Couldn't find getter for property " + path[i] + " in class " + aClass; |
| methods[i] = getter; |
| aClass = getter.getReturnType(); |
| if (List.class.isAssignableFrom(aClass)) { |
| aClass = ReflectionUtil.getRawType(extractCollectionElementType(getter.getGenericReturnType())); |
| } |
| } |
| return methods; |
| } |
| |
| @Nullable |
| public static JavaMethod findGetter(Class aClass, String propertyName) { |
| final String capitalized = StringUtil.capitalize(propertyName); |
| Method method = ReflectionUtil.getMethod(aClass, "get" + capitalized); |
| if (method != null) return JavaMethod.getMethod(aClass, method); |
| |
| method = ReflectionUtil.getMethod(aClass, "is" + capitalized); |
| if (method == null) return null; |
| |
| final JavaMethod javaMethod = JavaMethod.getMethod(aClass, method); |
| return canHaveIsPropertyGetterPrefix(javaMethod.getGenericReturnType()) ? javaMethod : null; |
| } |
| |
| public static Object invokeMethod(final Method method, final Object object, final Object... args) { |
| try { |
| return method.invoke(object, args); |
| } |
| catch (IllegalArgumentException e) { |
| throw new RuntimeException("Calling method " + method + " on object " + object + " with arguments " + Arrays.asList(args), e); |
| } |
| catch (IllegalAccessException e) { |
| throw new RuntimeException(e); |
| } |
| catch (InvocationTargetException e) { |
| final Throwable cause = e.getCause(); |
| if (cause instanceof ProcessCanceledException) { |
| throw (ProcessCanceledException)cause; |
| } |
| else if (cause instanceof Error) { |
| throw (Error)cause; |
| } |
| else if (cause instanceof RuntimeException) { |
| throw (RuntimeException) cause; |
| } |
| throw new RuntimeException(e); |
| } |
| catch (ProcessCanceledException e) { |
| throw e; |
| } |
| catch (Throwable throwable) { |
| throw new RuntimeException(throwable); |
| } |
| } |
| |
| @Nullable |
| public static Type extractCollectionElementType(Type returnType) { |
| if (returnType instanceof ParameterizedType) { |
| ParameterizedType parameterizedType = (ParameterizedType)returnType; |
| final Type rawType = parameterizedType.getRawType(); |
| if (rawType instanceof Class) { |
| final Class<?> rawClass = (Class<?>)rawType; |
| if (List.class.equals(rawClass) || Collection.class.equals(rawClass)) { |
| final Type[] arguments = ReflectionUtil.getActualTypeArguments(parameterizedType); |
| if (arguments.length == 1) { |
| final Type argument = arguments[0]; |
| if (argument instanceof WildcardType) { |
| final Type[] upperBounds = ((WildcardType)argument).getUpperBounds(); |
| if (upperBounds.length == 1) { |
| return upperBounds[0]; |
| } |
| } |
| else if (argument instanceof ParameterizedType) { |
| if (DomUtil.getGenericValueParameter(argument) != null) { |
| return argument; |
| } |
| } |
| else if (argument instanceof Class) { |
| return argument; |
| } |
| } |
| } |
| } |
| } |
| return null; |
| } |
| } |