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use crate::ArwenApiImpl;
use dharitri_wasm::api::EndpointFinishApi;

extern "C" {
	fn finish(dataOffset: *const u8, length: i32);

	// big int API
	fn bigIntFinishUnsigned(bih: i32);
	fn bigIntFinishSigned(bih: i32);

	// small int API
	fn smallIntFinishUnsigned(value: i64);
	fn smallIntFinishSigned(value: i64);

}

/// Interface to only be used by code generated by the macros.
/// The smart contract code doesn't have access to these methods directly.
impl EndpointFinishApi for ArwenApiImpl {
	#[inline]
	fn finish_slice_u8(&self, slice: &[u8]) {
		unsafe {
			finish(slice.as_ptr(), slice.len() as i32);
		}
	}

	#[inline]
	fn finish_big_int_raw(&self, handle: i32) {
		unsafe {
			bigIntFinishSigned(handle);
		}
	}

	#[inline]
	fn finish_big_uint_raw(&self, handle: i32) {
		unsafe {
			bigIntFinishUnsigned(handle);
		}
	}

	#[inline]
	fn finish_u64(&self, value: u64) {
		unsafe {
			smallIntFinishUnsigned(value as i64);
		}
	}

	#[inline]
	fn finish_i64(&self, value: i64) {
		unsafe {
			smallIntFinishSigned(value);
		}
	}
}