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use AnyObject;

pub use rubysys::types::{c_char, c_int, c_long, c_void, size_t, st_retval, Argc, CallbackMutPtr, CallbackPtr,
                         EncodingIndex, EncodingType, Id, InternalValue, RbDataType as DataType,
                         RbDataTypeFunction as DataTypeFunction, SignedValue, Value, ValueType, VmPointer};

#[cfg(unix)]
pub use rubysys::types::RawFd;

pub type Callback<I, O> = extern "C" fn(Argc, *const AnyObject, I) -> O;