下面列出了java.lang.reflect.Modifier#ABSTRACT 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
private static int parseSingleModfier(String s) throws InvalidModifierException {
switch (s) {
case "public":
return Modifier.PUBLIC;
case "protected":
return Modifier.PROTECTED;
case "private":
return Modifier.PRIVATE;
case "static":
return Modifier.STATIC;
case "final":
return Modifier.FINAL;
case "abstract":
return Modifier.ABSTRACT;
case "native":
return Modifier.NATIVE;
case "synchronized":
return Modifier.SYNCHRONIZED;
case "transient":
return Modifier.TRANSIENT;
case "volatile":
return Modifier.VOLATILE;
default:
throw new InvalidModifierException("unrecognized modifier:" + s);
}
}
/**
* Returns non-static, non-abstract method with given signature provided it
* is defined by or accessible (via inheritance) by the given class, or
* null if no match found. Access checks are disabled on the returned
* method (if any).
*/
private static Method getInheritableMethod(Class<?> cl, String name,
Class<?>[] argTypes,
Class<?> returnType)
{
Method meth = null;
Class<?> defCl = cl;
while (defCl != null) {
try {
meth = defCl.getDeclaredMethod(name, argTypes);
break;
} catch (NoSuchMethodException ex) {
defCl = defCl.getSuperclass();
}
}
if ((meth == null) || (meth.getReturnType() != returnType)) {
return null;
}
meth.setAccessible(true);
int mods = meth.getModifiers();
if ((mods & (Modifier.STATIC | Modifier.ABSTRACT)) != 0) {
return null;
} else if ((mods & (Modifier.PUBLIC | Modifier.PROTECTED)) != 0) {
return meth;
} else if ((mods & Modifier.PRIVATE) != 0) {
return (cl == defCl) ? meth : null;
} else {
return packageEquals(cl, defCl) ? meth : null;
}
}
@TestOnly
public static boolean isJUnit4TestClass(final Class aClass) {
final int modifiers = aClass.getModifiers();
if ((modifiers & Modifier.ABSTRACT) != 0) return false;
if ((modifiers & Modifier.PUBLIC) == 0) return false;
if (aClass.getAnnotation(RunWith.class) != null) return true;
for (Method method : aClass.getMethods()) {
if (method.getAnnotation(Test.class) != null) return true;
}
return false;
}
/**
* is object accessible?
*
* @param obj Object
* @throws StructException
*/
public static void isAccessible(Object obj) throws StructException{
int modifiers = obj.getClass().getModifiers();
if ((modifiers & Modifier.PUBLIC) == 0)
throw new StructException("Struct operations are only accessible for public classes. Class: " + obj.getClass().getName());
if ((modifiers & (Modifier.INTERFACE | Modifier.ABSTRACT)) != 0)
throw new StructException("Struct operations are not accessible for abstract classes and interfaces. Class: " + obj.getClass().getName());
}
private void createInterfaceBridgeMethodIfNeed(MethodNode interfaceMethod,MethodNode implementMethod) {
String desc = getMethodDescriptor(interfaceMethod);
String implementDesc = getMethodDescriptor(implementMethod);
if (desc.equals(implementDesc)) {
return;
}
int access = interfaceMethod.getModifier() & ~Modifier.ABSTRACT;
String name = interfaceMethod.getName();
MethodVisitor methodVisitor = classWriter.visitMethod(access, name, desc, methodSignature(interfaceMethod), null);
ParameterNode[] params = interfaceMethod.getParameters();
for(ParameterNode p : params) {
methodVisitor.visitParameter(p.getName(), p.getModifier());
}
ParameterNode[] implementedParams = implementMethod.getParameters();
methodVisitor.visitVarInsn(ALOAD,0);
int varIdx = 1;
for(int i=0;i<params.length;i++) {
Type implementedParamType = implementedParams[i].getType();
Type interfaceParamType = params[i].getType();
org.objectweb.asm.Type interfaceParamAsmType = asmType(interfaceParamType);
methodVisitor.visitVarInsn(interfaceParamAsmType.getOpcode(ILOAD),varIdx);
if (!implementedParamType.isAssignableFrom(interfaceParamType)) {
methodVisitor.visitTypeInsn(CHECKCAST,internalName(implementedParamType));
}
varIdx += interfaceParamAsmType.getSize();
}
String owner = internalName(implementMethod.getClassNode());
methodVisitor.visitMethodInsn(INVOKEVIRTUAL,owner,implementMethod.getName(),implementDesc,false);
Type returnType = interfaceMethod.getType();
if (VOID_TYPE.equals(returnType)) {
methodVisitor.visitInsn(RETURN);
} else {
methodVisitor.visitInsn(asmType(returnType).getOpcode(IRETURN));
}
methodVisitor.visitMaxs(0,0);
methodVisitor.visitEnd();
}
/**
* Returns true if a non-static, non-abstract method with given signature provided it
* is defined by or accessible (via inheritance) by the given class, or
* false if no match found.
*/
private static boolean getInheritableMethod(Class cl, String name,
Class[] argTypes,
Class returnType)
{
Method meth = null;
Class defCl = cl;
while (defCl != null) {
try {
meth = defCl.getDeclaredMethod(name, argTypes);
break;
} catch (NoSuchMethodException ex) {
defCl = defCl.getSuperclass();
}
}
if ((meth == null) || (meth.getReturnType() != returnType)) {
return false;
}
int mods = meth.getModifiers();
if ((mods & (Modifier.STATIC | Modifier.ABSTRACT)) != 0) {
return false;
} else if ((mods & (Modifier.PUBLIC | Modifier.PROTECTED)) != 0) {
return true;
} else if ((mods & Modifier.PRIVATE) != 0) {
return (cl == defCl);
} else {
return packageEquals(cl, defCl);
}
}
/**
* Returns non-static, non-abstract method with given signature provided it
* is defined by or accessible (via inheritance) by the given class, or
* null if no match found. Access checks are disabled on the returned
* method (if any).
*/
private static Method getInheritableMethod(Class<?> cl, String name,
Class<?>[] argTypes,
Class<?> returnType)
{
Method meth = null;
Class<?> defCl = cl;
while (defCl != null) {
try {
meth = defCl.getDeclaredMethod(name, argTypes);
break;
} catch (NoSuchMethodException ex) {
defCl = defCl.getSuperclass();
}
}
if ((meth == null) || (meth.getReturnType() != returnType)) {
return null;
}
meth.setAccessible(true);
int mods = meth.getModifiers();
if ((mods & (Modifier.STATIC | Modifier.ABSTRACT)) != 0) {
return null;
} else if ((mods & (Modifier.PUBLIC | Modifier.PROTECTED)) != 0) {
return meth;
} else if ((mods & Modifier.PRIVATE) != 0) {
return (cl == defCl) ? meth : null;
} else {
return packageEquals(cl, defCl) ? meth : null;
}
}
/**
* Returns non-static, non-abstract method with given signature provided it
* is defined by or accessible (via inheritance) by the given class, or
* null if no match found. Access checks are disabled on the returned
* method (if any).
*
* Copied from the Merlin java.io.ObjectStreamClass.
*/
private static Method getInheritableMethod(Class cl, String name,
Class[] argTypes,
Class returnType)
{
Method meth = null;
Class defCl = cl;
while (defCl != null) {
try {
meth = defCl.getDeclaredMethod(name, argTypes);
break;
} catch (NoSuchMethodException ex) {
defCl = defCl.getSuperclass();
}
}
if ((meth == null) || (meth.getReturnType() != returnType)) {
return null;
}
meth.setAccessible(true);
int mods = meth.getModifiers();
if ((mods & (Modifier.STATIC | Modifier.ABSTRACT)) != 0) {
return null;
} else if ((mods & (Modifier.PUBLIC | Modifier.PROTECTED)) != 0) {
return meth;
} else if ((mods & Modifier.PRIVATE) != 0) {
return (cl == defCl) ? meth : null;
} else {
return packageEquals(cl, defCl) ? meth : null;
}
}
/**
* Returns non-static, non-abstract method with given signature provided it
* is defined by or accessible (via inheritance) by the given class, or
* null if no match found. Access checks are disabled on the returned
* method (if any).
*
* Copied from the Merlin java.io.ObjectStreamClass.
*/
private static Method getInheritableMethod(Class<?> cl, String name,
Class<?>[] argTypes,
Class<?> returnType)
{
Method meth = null;
Class<?> defCl = cl;
while (defCl != null) {
try {
meth = defCl.getDeclaredMethod(name, argTypes);
break;
} catch (NoSuchMethodException ex) {
defCl = defCl.getSuperclass();
}
}
if ((meth == null) || (meth.getReturnType() != returnType)) {
return null;
}
meth.setAccessible(true);
int mods = meth.getModifiers();
if ((mods & (Modifier.STATIC | Modifier.ABSTRACT)) != 0) {
return null;
} else if ((mods & (Modifier.PUBLIC | Modifier.PROTECTED)) != 0) {
return meth;
} else if ((mods & Modifier.PRIVATE) != 0) {
return (cl == defCl) ? meth : null;
} else {
return packageEquals(cl, defCl) ? meth : null;
}
}
public int getModifiers(){
int mods = 0;
if ((u2innerClassAccessFlags & 0x0001) == 0x0001) mods |= Modifier.PUBLIC;
if ((u2innerClassAccessFlags & 0x0002) == 0x0002) mods |= Modifier.PRIVATE;
if ((u2innerClassAccessFlags & 0x0004) == 0x0004) mods |= Modifier.PROTECTED;
if ((u2innerClassAccessFlags & 0x0008) == 0x0008) mods |= Modifier.STATIC;
if ((u2innerClassAccessFlags & 0x0010) == 0x0010) mods |= Modifier.FINAL;
if ((u2innerClassAccessFlags & 0x0200) == 0x0200) mods |= Modifier.INTERFACE;
if ((u2innerClassAccessFlags & 0x0400) == 0x0400) mods |= Modifier.ABSTRACT;
return mods;
}
/**
* Returns non-static, non-abstract method with given signature provided it
* is defined by or accessible (via inheritance) by the given class, or
* null if no match found. Access checks are disabled on the returned
* method (if any).
*/
private static Method getInheritableMethod(Class<?> cl, String name,
Class<?>[] argTypes,
Class<?> returnType)
{
Method meth = null;
Class<?> defCl = cl;
while (defCl != null) {
try {
meth = defCl.getDeclaredMethod(name, argTypes);
break;
} catch (NoSuchMethodException ex) {
defCl = defCl.getSuperclass();
}
}
if ((meth == null) || (meth.getReturnType() != returnType)) {
return null;
}
meth.setAccessible(true);
int mods = meth.getModifiers();
if ((mods & (Modifier.STATIC | Modifier.ABSTRACT)) != 0) {
return null;
} else if ((mods & (Modifier.PUBLIC | Modifier.PROTECTED)) != 0) {
return meth;
} else if ((mods & Modifier.PRIVATE) != 0) {
return (cl == defCl) ? meth : null;
} else {
return packageEquals(cl, defCl) ? meth : null;
}
}
/**
* Returns non-static, non-abstract method with given signature provided it
* is defined by or accessible (via inheritance) by the given class, or
* null if no match found. Access checks are disabled on the returned
* method (if any).
*/
private static Method getInheritableMethod(Class<?> cl, String name,
Class<?>[] argTypes,
Class<?> returnType)
{
Method meth = null;
Class<?> defCl = cl;
while (defCl != null) {
try {
meth = defCl.getDeclaredMethod(name, argTypes);
break;
} catch (NoSuchMethodException ex) {
defCl = defCl.getSuperclass();
}
}
if ((meth == null) || (meth.getReturnType() != returnType)) {
return null;
}
meth.setAccessible(true);
int mods = meth.getModifiers();
if ((mods & (Modifier.STATIC | Modifier.ABSTRACT)) != 0) {
return null;
} else if ((mods & (Modifier.PUBLIC | Modifier.PROTECTED)) != 0) {
return meth;
} else if ((mods & Modifier.PRIVATE) != 0) {
return (cl == defCl) ? meth : null;
} else {
return packageEquals(cl, defCl) ? meth : null;
}
}
public SerializableMethod(Method method) {
declaringClass = method.getDeclaringClass();
methodName = method.getName();
parameterTypes = method.getParameterTypes();
returnType = method.getReturnType();
exceptionTypes = method.getExceptionTypes();
isVarArgs = method.isVarArgs();
isAbstract = (method.getModifiers() & Modifier.ABSTRACT) != 0;
}
/**
* Returns non-static, non-abstract method with given signature provided it
* is defined by or accessible (via inheritance) by the given class, or
* null if no match found. Access checks are disabled on the returned
* method (if any).
*/
private static Method getInheritableMethod(Class<?> cl, String name,
Class<?>[] argTypes,
Class<?> returnType)
{
Method meth = null;
Class<?> defCl = cl;
while (defCl != null) {
try {
meth = defCl.getDeclaredMethod(name, argTypes);
break;
} catch (NoSuchMethodException ex) {
defCl = defCl.getSuperclass();
}
}
if ((meth == null) || (meth.getReturnType() != returnType)) {
return null;
}
meth.setAccessible(true);
int mods = meth.getModifiers();
if ((mods & (Modifier.STATIC | Modifier.ABSTRACT)) != 0) {
return null;
} else if ((mods & (Modifier.PUBLIC | Modifier.PROTECTED)) != 0) {
return meth;
} else if ((mods & Modifier.PRIVATE) != 0) {
return (cl == defCl) ? meth : null;
} else {
return packageEquals(cl, defCl) ? meth : null;
}
}
/**
* Returns non-static, non-abstract method with given signature provided it
* is defined by or accessible (via inheritance) by the given class, or
* null if no match found. Access checks are disabled on the returned
* method (if any).
*
* Copied from the Merlin java.io.ObjectStreamClass.
*/
private static Method getInheritableMethod(Class<?> cl, String name,
Class<?>[] argTypes,
Class<?> returnType)
{
Method meth = null;
Class<?> defCl = cl;
while (defCl != null) {
try {
meth = defCl.getDeclaredMethod(name, argTypes);
break;
} catch (NoSuchMethodException ex) {
defCl = defCl.getSuperclass();
}
}
if ((meth == null) || (meth.getReturnType() != returnType)) {
return null;
}
int mods = meth.getModifiers();
if ((mods & (Modifier.STATIC | Modifier.ABSTRACT)) != 0) {
return null;
} else if ((mods & (Modifier.PUBLIC | Modifier.PROTECTED)) != 0) {
return meth;
} else if ((mods & Modifier.PRIVATE) != 0) {
return (cl == defCl) ? meth : null;
} else {
return packageEquals(cl, defCl) ? meth : null;
}
}
static boolean flagsRequireCode(int flags) {
// A method's flags force it to have a Code attribute,
// if the flags are neither native nor abstract.
return (flags & (Modifier.NATIVE | Modifier.ABSTRACT)) == 0;
}
static boolean flagsRequireCode(int flags) {
// A method's flags force it to have a Code attribute,
// if the flags are neither native nor abstract.
return (flags & (Modifier.NATIVE | Modifier.ABSTRACT)) == 0;
}
static boolean flagsRequireCode(int flags) {
// A method's flags force it to have a Code attribute,
// if the flags are neither native nor abstract.
return (flags & (Modifier.NATIVE | Modifier.ABSTRACT)) == 0;
}
/**
* Returns the Java language modifiers for this class or interface, encoded
* in an integer. The modifiers consist of the Java Virtual Machine's
* constants for {@code public}, {@code protected},
* {@code private}, {@code final}, {@code static},
* {@code abstract} and {@code interface}; they should be decoded
* using the methods of class {@code Modifier}.
*
* <p> If the underlying class is an array class, then its
* {@code public}, {@code private} and {@code protected}
* modifiers are the same as those of its component type. If this
* {@code Class} represents a primitive type or void, its
* {@code public} modifier is always {@code true}, and its
* {@code protected} and {@code private} modifiers are always
* {@code false}. If this object represents an array class, a
* primitive type or void, then its {@code final} modifier is always
* {@code true} and its interface modifier is always
* {@code false}. The values of its other modifiers are not determined
* by this specification.
*
* <p> The modifier encodings are defined in <em>The Java Virtual Machine
* Specification</em>, table 4.1.
*
* @return the {@code int} representing the modifiers for this class
* @see java.lang.reflect.Modifier
* @since JDK1.1
*/
public int getModifiers() {
// Array classes inherit modifiers from their component types, but in the case of arrays
// of an inner class, the class file may contain "fake" access flags because it's not valid
// for a top-level class to private, say. The real access flags are stored in the InnerClass
// attribute, so we need to make sure we drill down to the inner class: the accessFlags
// field is not the value we want to return, and the synthesized array class does not itself
// have an InnerClass attribute. https://code.google.com/p/android/issues/detail?id=56267
if (isArray()) {
int componentModifiers = getComponentType().getModifiers();
if ((componentModifiers & Modifier.INTERFACE) != 0) {
componentModifiers &= ~(Modifier.INTERFACE | Modifier.STATIC);
}
return Modifier.ABSTRACT | Modifier.FINAL | componentModifiers;
}
int JAVA_FLAGS_MASK = 0xffff;
int modifiers = this.getInnerClassFlags(accessFlags & JAVA_FLAGS_MASK);
return modifiers & JAVA_FLAGS_MASK;
}
static boolean flagsRequireCode(int flags) {
// A method's flags force it to have a Code attribute,
// if the flags are neither native nor abstract.
return (flags & (Modifier.NATIVE | Modifier.ABSTRACT)) == 0;
}