下面列出了java.lang.invoke.MethodType#changeParameterType ( ) 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 MethodHandle getMethodHandle(Method method)
{
MethodHandle methodHandle = methodHandle(FUNCTION_IMPLEMENTATION_ERROR, method);
if (!isStatic(method.getModifiers())) {
// Change type of "this" argument to Object to make sure callers won't have classloader issues
methodHandle = methodHandle.asType(methodHandle.type().changeParameterType(0, Object.class));
// Re-arrange the parameters, so that the "this" parameter is after the meta parameters
int[] permutedIndices = new int[methodHandle.type().parameterCount()];
permutedIndices[0] = dependencies.size();
MethodType newType = methodHandle.type().changeParameterType(dependencies.size(), methodHandle.type().parameterType(0));
for (int i = 0; i < dependencies.size(); i++) {
permutedIndices[i + 1] = i;
newType = newType.changeParameterType(i, methodHandle.type().parameterType(i + 1));
}
for (int i = dependencies.size() + 1; i < permutedIndices.length; i++) {
permutedIndices[i] = i;
}
methodHandle = permuteArguments(methodHandle, newType, permutedIndices);
}
return methodHandle;
}
private static MethodType createLambdaMethodType(Method method, MethodType instantiatedMethodType) {
boolean isStatic = Modifier.isStatic(method.getModifiers());
MethodType signature = isStatic ? instantiatedMethodType : instantiatedMethodType.changeParameterType(0, Object.class);
Class<?>[] params = method.getParameterTypes();
for (int i=0; i<params.length; i++){
if (Object.class.isAssignableFrom(params[i])){
signature = signature.changeParameterType(isStatic ? i : i+1, Object.class);
}
}
if (Object.class.isAssignableFrom(signature.returnType())){
signature = signature.changeReturnType(Object.class);
}
return signature;
}
private static MethodType createLambdaMethodType(Method method, MethodType instantiatedMethodType) {
boolean isStatic = Modifier.isStatic(method.getModifiers());
MethodType signature = isStatic ? instantiatedMethodType : instantiatedMethodType.changeParameterType(0, Object.class);
Class<?>[] params = method.getParameterTypes();
for (int i=0; i<params.length; i++){
if (Object.class.isAssignableFrom(params[i])){
signature = signature.changeParameterType(isStatic ? i : i+1, Object.class);
}
}
if (Object.class.isAssignableFrom(signature.returnType())){
signature = signature.changeReturnType(Object.class);
}
return signature;
}
private static MethodType makeGenericType(final MethodType type) {
MethodType newType = type.generic();
if (isVarArg(type)) {
newType = newType.changeParameterType(type.parameterCount() - 1, Object[].class);
}
if (needsCallee(type)) {
newType = newType.changeParameterType(0, ScriptFunction.class);
}
return newType;
}
private static MethodType makeGenericType(final MethodType type) {
MethodType newType = type.generic();
if (isVarArg(type)) {
newType = newType.changeParameterType(type.parameterCount() - 1, Object[].class);
}
if (needsCallee(type)) {
newType = newType.changeParameterType(0, ScriptFunction.class);
}
return newType;
}
static MethodHandle tweak(MethodHandle mh, int argPos, Class<?> type) {
MethodType mt = mh.type();
if (argPos == -1)
mt = mt.changeReturnType(type);
else
mt = mt.changeParameterType(argPos, type);
return MethodHandles.explicitCastArguments(mh, mt);
}
/**
* Helper method to manipulate the given type to replace Wrapper with Object.
*/
private MethodType removeWrapper(MethodType targetType) {
Class<?>[] types = targetType.parameterArray();
for (int i = 0; i < types.length; i++) {
if (types[i] == Wrapper.class) {
targetType = targetType.changeParameterType(i, Object.class);
}
}
return targetType;
}
/**
* Replaces the types in the callSiteType parameter if more specific types
* given through the arguments. This is in general the case, unless
* the argument is null.
*/
protected static MethodType replaceWithMoreSpecificType(Object[] args, MethodType callSiteType) {
for (int i = 0; i < args.length; i++) {
// if argument null, take the static type
if (args[i] == null) continue;
if (callSiteType.parameterType(i).isPrimitive()) continue;
Class<?> argClass = args[i].getClass();
callSiteType = callSiteType.changeParameterType(i, argClass);
}
return callSiteType;
}
@Override
public GuardedInvocation getGuardedInvocation(final LinkRequest linkRequest, final LinkerServices linkerServices) throws Exception {
final Object objBoundCallable = linkRequest.getReceiver();
if(!(objBoundCallable instanceof BoundCallable)) {
return null;
}
final CallSiteDescriptor descriptor = linkRequest.getCallSiteDescriptor();
if (descriptor.getNameTokenCount() < 2 || !"dyn".equals(descriptor.getNameToken(CallSiteDescriptor.SCHEME))) {
return null;
}
final String operation = descriptor.getNameToken(CallSiteDescriptor.OPERATOR);
// We need to distinguish "dyn:new" from "dyn:call" because "dyn:call" sites have parameter list of the form
// "callee, this, args", while "dyn:call" sites have "callee, args" -- they lack the "this" parameter.
final boolean isCall;
if ("new".equals(operation)) {
isCall = false;
} else if ("call".equals(operation)) {
isCall = true;
} else {
// Only dyn:call and dyn:new are supported.
return null;
}
final BoundCallable boundCallable = (BoundCallable)objBoundCallable;
final Object callable = boundCallable.getCallable();
final Object boundThis = boundCallable.getBoundThis();
// We need to ask the linker services for a delegate invocation on the target callable.
// Replace arguments (boundCallable[, this], args) => (callable[, boundThis], boundArgs, args) when delegating
final Object[] args = linkRequest.getArguments();
final Object[] boundArgs = boundCallable.getBoundArgs();
final int argsLen = args.length;
final int boundArgsLen = boundArgs.length;
final Object[] newArgs = new Object[argsLen + boundArgsLen];
newArgs[0] = callable;
final int firstArgIndex;
if (isCall) {
newArgs[1] = boundThis;
firstArgIndex = 2;
} else {
firstArgIndex = 1;
}
System.arraycopy(boundArgs, 0, newArgs, firstArgIndex, boundArgsLen);
System.arraycopy(args, firstArgIndex, newArgs, firstArgIndex + boundArgsLen, argsLen - firstArgIndex);
// Use R(T0, T1, T2, ...) => R(callable.class, boundThis.class, boundArg0.class, ..., boundArgn.class, T2, ...)
// call site type when delegating to underlying linker (for dyn:new, there's no this).
final MethodType type = descriptor.getMethodType();
// Use R(T0, ...) => R(callable.class, ...)
MethodType newMethodType = descriptor.getMethodType().changeParameterType(0, callable.getClass());
if (isCall) {
// R(callable.class, T1, ...) => R(callable.class, boundThis.class, ...)
newMethodType = newMethodType.changeParameterType(1, boundThis == null? Object.class : boundThis.getClass());
}
// R(callable.class[, boundThis.class], T2, ...) => R(callable.class[, boundThis.class], boundArg0.class, ..., boundArgn.class, T2, ...)
for(int i = boundArgs.length; i-- > 0;) {
newMethodType = newMethodType.insertParameterTypes(firstArgIndex, boundArgs[i] == null ? Object.class : boundArgs[i].getClass());
}
final CallSiteDescriptor newDescriptor = descriptor.changeMethodType(newMethodType);
// Delegate to target's linker
final GuardedInvocation inv = linkerServices.getGuardedInvocation(linkRequest.replaceArguments(newDescriptor, newArgs));
if(inv == null) {
return null;
}
// Bind (callable[, boundThis], boundArgs) to the delegate handle
final MethodHandle boundHandle = MethodHandles.insertArguments(inv.getInvocation(), 0,
Arrays.copyOf(newArgs, firstArgIndex + boundArgs.length));
final Class<?> p0Type = type.parameterType(0);
final MethodHandle droppingHandle;
if (isCall) {
// Ignore incoming boundCallable and this
droppingHandle = MethodHandles.dropArguments(boundHandle, 0, p0Type, type.parameterType(1));
} else {
// Ignore incoming boundCallable
droppingHandle = MethodHandles.dropArguments(boundHandle, 0, p0Type);
}
// Identity guard on boundCallable object
final MethodHandle newGuard = Guards.getIdentityGuard(boundCallable);
return inv.replaceMethods(droppingHandle, newGuard.asType(newGuard.type().changeParameterType(0, p0Type)));
}
private static GuardedInvocation fixReceiverType(final GuardedInvocation link, final MethodHandle filter) {
// The receiver may be an Object or a ScriptObject.
final MethodType invType = link.getInvocation().type();
final MethodType newInvType = invType.changeParameterType(0, filter.type().returnType());
return link.asType(newInvType);
}
@Override
public GuardedInvocation getGuardedInvocation(final LinkRequest linkRequest, final LinkerServices linkerServices) throws Exception {
final Object objBoundCallable = linkRequest.getReceiver();
if(!(objBoundCallable instanceof BoundCallable)) {
return null;
}
final CallSiteDescriptor descriptor = linkRequest.getCallSiteDescriptor();
if (descriptor.getNameTokenCount() < 2 || !"dyn".equals(descriptor.getNameToken(CallSiteDescriptor.SCHEME))) {
return null;
}
final String operation = descriptor.getNameToken(CallSiteDescriptor.OPERATOR);
// We need to distinguish "dyn:new" from "dyn:call" because "dyn:call" sites have parameter list of the form
// "callee, this, args", while "dyn:call" sites have "callee, args" -- they lack the "this" parameter.
final boolean isCall;
if ("new".equals(operation)) {
isCall = false;
} else if ("call".equals(operation)) {
isCall = true;
} else {
// Only dyn:call and dyn:new are supported.
return null;
}
final BoundCallable boundCallable = (BoundCallable)objBoundCallable;
final Object callable = boundCallable.getCallable();
final Object boundThis = boundCallable.getBoundThis();
// We need to ask the linker services for a delegate invocation on the target callable.
// Replace arguments (boundCallable[, this], args) => (callable[, boundThis], boundArgs, args) when delegating
final Object[] args = linkRequest.getArguments();
final Object[] boundArgs = boundCallable.getBoundArgs();
final int argsLen = args.length;
final int boundArgsLen = boundArgs.length;
final Object[] newArgs = new Object[argsLen + boundArgsLen];
newArgs[0] = callable;
final int firstArgIndex;
if (isCall) {
newArgs[1] = boundThis;
firstArgIndex = 2;
} else {
firstArgIndex = 1;
}
System.arraycopy(boundArgs, 0, newArgs, firstArgIndex, boundArgsLen);
System.arraycopy(args, firstArgIndex, newArgs, firstArgIndex + boundArgsLen, argsLen - firstArgIndex);
// Use R(T0, T1, T2, ...) => R(callable.class, boundThis.class, boundArg0.class, ..., boundArgn.class, T2, ...)
// call site type when delegating to underlying linker (for dyn:new, there's no this).
final MethodType type = descriptor.getMethodType();
// Use R(T0, ...) => R(callable.class, ...)
MethodType newMethodType = descriptor.getMethodType().changeParameterType(0, callable.getClass());
if (isCall) {
// R(callable.class, T1, ...) => R(callable.class, boundThis.class, ...)
newMethodType = newMethodType.changeParameterType(1, boundThis == null? Object.class : boundThis.getClass());
}
// R(callable.class[, boundThis.class], T2, ...) => R(callable.class[, boundThis.class], boundArg0.class, ..., boundArgn.class, T2, ...)
for(int i = boundArgs.length; i-- > 0;) {
newMethodType = newMethodType.insertParameterTypes(firstArgIndex, boundArgs[i] == null ? Object.class : boundArgs[i].getClass());
}
final CallSiteDescriptor newDescriptor = descriptor.changeMethodType(newMethodType);
// Delegate to target's linker
final GuardedInvocation inv = linkerServices.getGuardedInvocation(linkRequest.replaceArguments(newDescriptor, newArgs));
if(inv == null) {
return null;
}
// Bind (callable[, boundThis], boundArgs) to the delegate handle
final MethodHandle boundHandle = MethodHandles.insertArguments(inv.getInvocation(), 0,
Arrays.copyOf(newArgs, firstArgIndex + boundArgs.length));
final Class<?> p0Type = type.parameterType(0);
final MethodHandle droppingHandle;
if (isCall) {
// Ignore incoming boundCallable and this
droppingHandle = MethodHandles.dropArguments(boundHandle, 0, p0Type, type.parameterType(1));
} else {
// Ignore incoming boundCallable
droppingHandle = MethodHandles.dropArguments(boundHandle, 0, p0Type);
}
// Identity guard on boundCallable object
final MethodHandle newGuard = Guards.getIdentityGuard(boundCallable);
return inv.replaceMethods(droppingHandle, newGuard.asType(newGuard.type().changeParameterType(0, p0Type)));
}
private static GuardedInvocation fixReceiverType(final GuardedInvocation link, final MethodHandle filter) {
// The receiver may be an Object or a ScriptObject.
final MethodType invType = link.getInvocation().type();
final MethodType newInvType = invType.changeParameterType(0, filter.type().returnType());
return link.asType(newInvType);
}
@Override
public GuardedInvocation getGuardedInvocation(final LinkRequest linkRequest, final LinkerServices linkerServices) throws Exception {
final Object objBoundCallable = linkRequest.getReceiver();
if(!(objBoundCallable instanceof BoundCallable)) {
return null;
}
final CallSiteDescriptor descriptor = linkRequest.getCallSiteDescriptor();
if (descriptor.getNameTokenCount() < 2 || !"dyn".equals(descriptor.getNameToken(CallSiteDescriptor.SCHEME))) {
return null;
}
final String operation = descriptor.getNameToken(CallSiteDescriptor.OPERATOR);
// We need to distinguish "dyn:new" from "dyn:call" because "dyn:call" sites have parameter list of the form
// "callee, this, args", while "dyn:call" sites have "callee, args" -- they lack the "this" parameter.
final boolean isCall;
if ("new".equals(operation)) {
isCall = false;
} else if ("call".equals(operation)) {
isCall = true;
} else {
// Only dyn:call and dyn:new are supported.
return null;
}
final BoundCallable boundCallable = (BoundCallable)objBoundCallable;
final Object callable = boundCallable.getCallable();
final Object boundThis = boundCallable.getBoundThis();
// We need to ask the linker services for a delegate invocation on the target callable.
// Replace arguments (boundCallable[, this], args) => (callable[, boundThis], boundArgs, args) when delegating
final Object[] args = linkRequest.getArguments();
final Object[] boundArgs = boundCallable.getBoundArgs();
final int argsLen = args.length;
final int boundArgsLen = boundArgs.length;
final Object[] newArgs = new Object[argsLen + boundArgsLen];
newArgs[0] = callable;
final int firstArgIndex;
if (isCall) {
newArgs[1] = boundThis;
firstArgIndex = 2;
} else {
firstArgIndex = 1;
}
System.arraycopy(boundArgs, 0, newArgs, firstArgIndex, boundArgsLen);
System.arraycopy(args, firstArgIndex, newArgs, firstArgIndex + boundArgsLen, argsLen - firstArgIndex);
// Use R(T0, T1, T2, ...) => R(callable.class, boundThis.class, boundArg0.class, ..., boundArgn.class, T2, ...)
// call site type when delegating to underlying linker (for dyn:new, there's no this).
final MethodType type = descriptor.getMethodType();
// Use R(T0, ...) => R(callable.class, ...)
MethodType newMethodType = descriptor.getMethodType().changeParameterType(0, callable.getClass());
if (isCall) {
// R(callable.class, T1, ...) => R(callable.class, boundThis.class, ...)
newMethodType = newMethodType.changeParameterType(1, boundThis == null? Object.class : boundThis.getClass());
}
// R(callable.class[, boundThis.class], T2, ...) => R(callable.class[, boundThis.class], boundArg0.class, ..., boundArgn.class, T2, ...)
for(int i = boundArgs.length; i-- > 0;) {
newMethodType = newMethodType.insertParameterTypes(firstArgIndex, boundArgs[i] == null ? Object.class : boundArgs[i].getClass());
}
final CallSiteDescriptor newDescriptor = descriptor.changeMethodType(newMethodType);
// Delegate to target's linker
final GuardedInvocation inv = linkerServices.getGuardedInvocation(linkRequest.replaceArguments(newDescriptor, newArgs));
if(inv == null) {
return null;
}
// Bind (callable[, boundThis], boundArgs) to the delegate handle
final MethodHandle boundHandle = MethodHandles.insertArguments(inv.getInvocation(), 0,
Arrays.copyOf(newArgs, firstArgIndex + boundArgs.length));
final Class<?> p0Type = type.parameterType(0);
final MethodHandle droppingHandle;
if (isCall) {
// Ignore incoming boundCallable and this
droppingHandle = MethodHandles.dropArguments(boundHandle, 0, p0Type, type.parameterType(1));
} else {
// Ignore incoming boundCallable
droppingHandle = MethodHandles.dropArguments(boundHandle, 0, p0Type);
}
// Identity guard on boundCallable object
final MethodHandle newGuard = Guards.getIdentityGuard(boundCallable);
return inv.replaceMethods(droppingHandle, newGuard.asType(newGuard.type().changeParameterType(0, p0Type)));
}
private static GuardedInvocation fixReceiverType(final GuardedInvocation link, final MethodHandle filter) {
// The receiver may be an Object or a ScriptObject.
final MethodType invType = link.getInvocation().type();
final MethodType newInvType = invType.changeParameterType(0, filter.type().returnType());
return link.asType(newInvType);
}
private static GuardedInvocation fixReceiverType(final GuardedInvocation link, final MethodHandle filter) {
// The receiver may be an Object or a ScriptObject.
final MethodType invType = link.getInvocation().type();
final MethodType newInvType = invType.changeParameterType(0, filter.type().returnType());
return link.asType(newInvType);
}
private static GuardedInvocation fixReceiverType(final GuardedInvocation link, final MethodHandle filter) {
// The receiver may be an Object or a ScriptObject.
final MethodType invType = link.getInvocation().type();
final MethodType newInvType = invType.changeParameterType(0, filter.type().returnType());
return link.asType(newInvType);
}
private static GuardedInvocation fixReceiverType(final GuardedInvocation link, final MethodHandle filter) {
// The receiver may be an Object or a ScriptObject.
final MethodType invType = link.getInvocation().type();
final MethodType newInvType = invType.changeParameterType(0, filter.type().returnType());
return link.asType(newInvType);
}
@Override
public GuardedInvocation getGuardedInvocation(final LinkRequest linkRequest, final LinkerServices linkerServices) throws Exception {
final Object objBoundCallable = linkRequest.getReceiver();
if(!(objBoundCallable instanceof BoundCallable)) {
return null;
}
final CallSiteDescriptor descriptor = linkRequest.getCallSiteDescriptor();
if (descriptor.getNameTokenCount() < 2 || !"dyn".equals(descriptor.getNameToken(CallSiteDescriptor.SCHEME))) {
return null;
}
final String operation = descriptor.getNameToken(CallSiteDescriptor.OPERATOR);
// We need to distinguish "dyn:new" from "dyn:call" because "dyn:call" sites have parameter list of the form
// "callee, this, args", while "dyn:call" sites have "callee, args" -- they lack the "this" parameter.
final boolean isCall;
if ("new".equals(operation)) {
isCall = false;
} else if ("call".equals(operation)) {
isCall = true;
} else {
// Only dyn:call and dyn:new are supported.
return null;
}
final BoundCallable boundCallable = (BoundCallable)objBoundCallable;
final Object callable = boundCallable.getCallable();
final Object boundThis = boundCallable.getBoundThis();
// We need to ask the linker services for a delegate invocation on the target callable.
// Replace arguments (boundCallable[, this], args) => (callable[, boundThis], boundArgs, args) when delegating
final Object[] args = linkRequest.getArguments();
final Object[] boundArgs = boundCallable.getBoundArgs();
final int argsLen = args.length;
final int boundArgsLen = boundArgs.length;
final Object[] newArgs = new Object[argsLen + boundArgsLen];
newArgs[0] = callable;
final int firstArgIndex;
if (isCall) {
newArgs[1] = boundThis;
firstArgIndex = 2;
} else {
firstArgIndex = 1;
}
System.arraycopy(boundArgs, 0, newArgs, firstArgIndex, boundArgsLen);
System.arraycopy(args, firstArgIndex, newArgs, firstArgIndex + boundArgsLen, argsLen - firstArgIndex);
// Use R(T0, T1, T2, ...) => R(callable.class, boundThis.class, boundArg0.class, ..., boundArgn.class, T2, ...)
// call site type when delegating to underlying linker (for dyn:new, there's no this).
final MethodType type = descriptor.getMethodType();
// Use R(T0, ...) => R(callable.class, ...)
MethodType newMethodType = descriptor.getMethodType().changeParameterType(0, callable.getClass());
if (isCall) {
// R(callable.class, T1, ...) => R(callable.class, boundThis.class, ...)
newMethodType = newMethodType.changeParameterType(1, boundThis == null? Object.class : boundThis.getClass());
}
// R(callable.class[, boundThis.class], T2, ...) => R(callable.class[, boundThis.class], boundArg0.class, ..., boundArgn.class, T2, ...)
for(int i = boundArgs.length; i-- > 0;) {
newMethodType = newMethodType.insertParameterTypes(firstArgIndex, boundArgs[i] == null ? Object.class : boundArgs[i].getClass());
}
final CallSiteDescriptor newDescriptor = descriptor.changeMethodType(newMethodType);
// Delegate to target's linker
final GuardedInvocation inv = linkerServices.getGuardedInvocation(linkRequest.replaceArguments(newDescriptor, newArgs));
if(inv == null) {
return null;
}
// Bind (callable[, boundThis], boundArgs) to the delegate handle
final MethodHandle boundHandle = MethodHandles.insertArguments(inv.getInvocation(), 0,
Arrays.copyOf(newArgs, firstArgIndex + boundArgs.length));
final Class<?> p0Type = type.parameterType(0);
final MethodHandle droppingHandle;
if (isCall) {
// Ignore incoming boundCallable and this
droppingHandle = MethodHandles.dropArguments(boundHandle, 0, p0Type, type.parameterType(1));
} else {
// Ignore incoming boundCallable
droppingHandle = MethodHandles.dropArguments(boundHandle, 0, p0Type);
}
// Identity guard on boundCallable object
final MethodHandle newGuard = Guards.getIdentityGuard(boundCallable);
return inv.replaceMethods(droppingHandle, newGuard.asType(newGuard.type().changeParameterType(0, p0Type)));
}
/**
* Takes a method handle, and returns a potentially different method handle that can be used in
* {@code ScriptFunction#invoke(Object, Object...)} or {code ScriptFunction#construct(Object, Object...)}.
* The returned method handle will be sure to return {@code Object}, and will have all its parameters turned into
* {@code Object} as well, except for the following ones:
* <ul>
* <li>a last parameter of type {@code Object[]} which is used for vararg functions,</li>
* <li>the first argument, which is forced to be {@link ScriptFunction}, in case the function receives itself
* (callee) as an argument.</li>
* </ul>
*
* @param mh the original method handle
*
* @return the new handle, conforming to the rules above.
*/
private static MethodHandle composeGenericMethod(final MethodHandle mh) {
final MethodType type = mh.type();
final boolean isVarArg = ScriptFunctionData.isVarArg(mh);
final int paramCount = isVarArg ? type.parameterCount() - 1 : type.parameterCount();
MethodType newType = MethodType.genericMethodType(paramCount, isVarArg);
if (ScriptFunctionData.needsCallee(mh)) {
newType = newType.changeParameterType(0, ScriptFunction.class);
}
return type.equals(newType) ? mh : mh.asType(newType);
}
/**
* Takes a method handle, and returns a potentially different method handle that can be used in
* {@code ScriptFunction#invoke(Object, Object...)} or {code ScriptFunction#construct(Object, Object...)}.
* The returned method handle will be sure to return {@code Object}, and will have all its parameters turned into
* {@code Object} as well, except for the following ones:
* <ul>
* <li>a last parameter of type {@code Object[]} which is used for vararg functions,</li>
* <li>the first argument, which is forced to be {@link ScriptFunction}, in case the function receives itself
* (callee) as an argument.</li>
* </ul>
*
* @param mh the original method handle
*
* @return the new handle, conforming to the rules above.
*/
private static MethodHandle composeGenericMethod(final MethodHandle mh) {
final MethodType type = mh.type();
final boolean isVarArg = ScriptFunctionData.isVarArg(mh);
final int paramCount = isVarArg ? type.parameterCount() - 1 : type.parameterCount();
MethodType newType = MethodType.genericMethodType(paramCount, isVarArg);
if (ScriptFunctionData.needsCallee(mh)) {
newType = newType.changeParameterType(0, ScriptFunction.class);
}
return type.equals(newType) ? mh : mh.asType(newType);
}