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package java.lang.constant;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import static java.lang.constant.ConstantDescs.BSM_INVOKE;
import static java.lang.constant.ConstantDescs.CD_MethodHandle;
import static java.util.Objects.requireNonNull;
A nominal descriptor for a MethodHandle
constant that performs a MethodHandle.asType(MethodType)
adaptation on another MethodHandle
. /**
* A <a href="package-summary.html#nominal">nominal descriptor</a> for a
* {@link MethodHandle} constant that performs a {@link MethodHandle#asType(MethodType)}
* adaptation on another {@link MethodHandle}.
*/
final class AsTypeMethodHandleDesc extends DynamicConstantDesc<MethodHandle>
implements MethodHandleDesc {
private final MethodHandleDesc underlying;
private final MethodTypeDesc type;
AsTypeMethodHandleDesc(MethodHandleDesc underlying, MethodTypeDesc type) {
super(BSM_INVOKE, ConstantDescs.DEFAULT_NAME, CD_MethodHandle,
ConstantDescs.MHD_METHODHANDLE_ASTYPE, underlying, type);
this.underlying = requireNonNull(underlying);
this.type = requireNonNull(type);
}
@Override
public MethodTypeDesc invocationType() {
return type;
}
@Override
public MethodHandle resolveConstantDesc(MethodHandles.Lookup lookup)
throws ReflectiveOperationException {
MethodHandle handle = (MethodHandle) underlying.resolveConstantDesc(lookup);
MethodType methodType = (MethodType) type.resolveConstantDesc(lookup);
return handle.asType(methodType);
}
@Override
public String toString() {
return String.format("%s.asType%s", underlying.toString(), type.displayDescriptor());
}
}