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additional methods, call setAccessible(true) for found fields and methods

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This commit is contained in:
Alexey Kudravtsev
2014-07-02 13:29:31 +04:00
parent 48bfcde50a
commit 80dd5e077f
1 changed files with 34 additions and 32 deletions
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platform/util/src/com/intellij/util/ReflectionUtil.java
+34 -32
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@@ -160,11 +160,11 @@ public class ReflectionUtil {
}
@NotNull
public static Field findAssignableField(@NotNull Class<?> clazz, @NotNull final Class<?> fieldType, @NotNull final String fieldName) throws NoSuchFieldException {
public static Field findAssignableField(@NotNull Class<?> clazz, @Nullable("null means any type") final Class<?> fieldType, @NotNull final String fieldName) throws NoSuchFieldException {
Field result = processFields(clazz, new Condition<Field>() {
@Override
public boolean value(Field field) {
return fieldName.equals(field.getName()) && fieldType.isAssignableFrom(field.getType());
return fieldName.equals(field.getName()) && (fieldType == null || fieldType.isAssignableFrom(field.getType()));
}
});
if (result != null) return result;
@@ -186,7 +186,10 @@ public class ReflectionUtil {
private static Field processFields(@NotNull Class clazz, @NotNull Condition<Field> checker) {
for (Field field : clazz.getDeclaredFields()) {
if (checker.value(field)) return field;
if (checker.value(field)) {
field.setAccessible(true);
return field;
}
}
final Class superClass = clazz.getSuperclass();
if (superClass != null) {
@@ -201,7 +204,7 @@ public class ReflectionUtil {
return null;
}
public static void resetField(@NotNull Class clazz, @NotNull Class type, @NotNull String name) {
public static void resetField(@NotNull Class clazz, @Nullable("null means of any type") Class type, @NotNull String name) {
try {
resetField(null, findField(clazz, type, name));
}
@@ -209,7 +212,7 @@ public class ReflectionUtil {
LOG.info(e);
}
}
public static void resetField(@NotNull Object object, @NotNull Class type, @NotNull String name) {
public static void resetField(@NotNull Object object, @Nullable("null means any type") Class type, @NotNull String name) {
try {
resetField(object, findField(object.getClass(), type, name));
}
@@ -257,7 +260,10 @@ public class ReflectionUtil {
@Nullable
public static Method findMethod(@NotNull Collection<Method> methods, @NonNls @NotNull String name, @NotNull Class... parameters) {
for (final Method method : methods) {
if (name.equals(method.getName()) && Arrays.equals(parameters, method.getParameterTypes())) return method;
if (name.equals(method.getName()) && Arrays.equals(parameters, method.getParameterTypes())) {
method.setAccessible(true);
return method;
}
}
return null;
}
@@ -322,10 +328,9 @@ public class ReflectionUtil {
return method == null ? null : method.getDeclaringClass();
}
public static <T> T getField(@NotNull Class objectClass, Object object, @NotNull Class<T> fieldType, @NotNull @NonNls String fieldName) {
public static <T> T getField(@NotNull Class objectClass, Object object, @Nullable("null means any type") Class<T> fieldType, @NotNull @NonNls String fieldName) {
try {
final Field field = findAssignableField(objectClass, fieldType, fieldName);
field.setAccessible(true);
return (T)field.get(object);
}
catch (NoSuchFieldException e) {
@@ -338,6 +343,22 @@ public class ReflectionUtil {
}
}
// returns true if value was set
public static <T> boolean setField(@NotNull Class objectClass, Object object, @Nullable("null means any type") Class<T> fieldType, @NotNull @NonNls String fieldName, T value) {
try {
final Field field = findAssignableField(objectClass, fieldType, fieldName);
field.set(object, value);
return true;
}
catch (NoSuchFieldException e) {
LOG.debug(e);
}
catch (IllegalAccessException e) {
LOG.debug(e);
}
return false;
}
public static Type resolveVariableInHierarchy(@NotNull TypeVariable variable, @NotNull Class aClass) {
Type type;
Class current = aClass;
@@ -369,21 +390,8 @@ public class ReflectionUtil {
// method getConstructorAccessorMethod is not necessary since JDK7, use acquireConstructorAccessor return value instead
assert Patches.USE_REFLECTION_TO_ACCESS_JDK7;
}
private static final Method acquireConstructorAccessorMethod;
private static final Method getConstructorAccessorMethod;
static {
try {
Method accessor = Constructor.class.getDeclaredMethod("acquireConstructorAccessor");
accessor.setAccessible(true);
acquireConstructorAccessorMethod = accessor;
Method get = Constructor.class.getDeclaredMethod("getConstructorAccessor");
get.setAccessible(true);
getConstructorAccessorMethod = get;
}
catch (NoSuchMethodException e) {
throw new RuntimeException(e);
}
}
private static final Method acquireConstructorAccessorMethod = getDeclaredMethod(Constructor.class, "acquireConstructorAccessor");
private static final Method getConstructorAccessorMethod = getDeclaredMethod(Constructor.class, "getConstructorAccessor");
@NotNull
public static ConstructorAccessor getConstructorAccessor(@NotNull Constructor constructor) {
@@ -429,17 +437,11 @@ public class ReflectionUtil {
}
public static void resetThreadLocals() {
try {
Field field = Thread.class.getDeclaredField("threadLocals");
field.setAccessible(true);
field.set(Thread.currentThread(), null);
}
catch (Throwable e) {
LOG.info(e);
}
resetField(Thread.currentThread(), null, "threadLocals");
}
public static @Nullable Class getGrandCallerClass() {
@Nullable
public static Class getGrandCallerClass() {
int stackFrameCount = 3;
Class callerClass = findCallerClass(stackFrameCount);
while (callerClass != null && callerClass.getClassLoader() == null) { // looks like a system class