gin-tonic-core 0.6.0

core functions for gin-tonic
Documentation 
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use crate::{Scalar, Unpacked, decoder::Decoder};

impl<RustType, ProtobufType> Unpacked<ProtobufType> for Vec<RustType>
where
    RustType: Scalar<ProtobufType>,
{
    type Rust = RustType;

    fn encode(&self, tag: crate::Tag, encoder: &mut impl crate::Encode) {
        if self.is_empty() {
            return;
        }

        for i in self.iter() {
            encoder.encode_tag(tag);
            <RustType as Scalar<ProtobufType>>::encode(i, encoder);
        }
    }

    fn decode<'buf>(
        tag: crate::Tag,
        raw_message: &'buf crate::RawMessageView<'buf>,
    ) -> Result<Vec<Self::Rust>, crate::error::ProtoError>
    where
        Self: Sized,
    {
        let mut vec = vec![];

        for buffer in raw_message.tag_data(tag) {
            let mut decoder = Decoder::new(buffer);
            vec.push(<RustType as Scalar<ProtobufType>>::decode(&mut decoder)?);
        }

        Ok(vec)
    }
}

#[cfg(test)]
mod test {
    use std::fmt::Debug;

    use crate::{RawMessageView, Scalar, Tag, Unpacked, encoder::Encoder, scalars::*};

    #[test]
    fn unpacked() {
        fn inner<RustType, ProtobufType>(data: &Vec<RustType>, expected_bytes: &'static [u8])
        where
            RustType: Scalar<ProtobufType> + PartialEq + Debug,
        {
            let tag = Tag::from_parts(1, RustType::WIRE_TYPE);
            let size_hint = Unpacked::<ProtobufType>::size_hint(data, tag);

            let mut buffer = vec![0u8; size_hint];
            let mut encoder = Encoder::new(&mut buffer);
            Unpacked::<ProtobufType>::encode(data, tag, &mut encoder);

            assert_eq!(size_hint, buffer.len());
            assert_eq!(&expected_bytes[..size_hint], &buffer[..size_hint]);

            let generic_message = RawMessageView::try_from(&buffer[..size_hint]).unwrap();
            let deserialized =
                <Vec<RustType> as Unpacked<ProtobufType>>::decode(tag, &generic_message).unwrap();

            assert_eq!(data, &deserialized)
        }

        inner::<i32, Int32>(
            &vec![1, 2, -3],
            b"\x08\x01\x08\x02\x08\xfd\xff\xff\xff\xff\xff\xff\xff\xff\x01",
        );
        inner::<i64, Int64>(
            &vec![1, 2, -3],
            b"\x08\x01\x08\x02\x08\xfd\xff\xff\xff\xff\xff\xff\xff\xff\x01",
        );

        inner::<u32, UInt32>(&vec![1, 2, 3], b"\x08\x01\x08\x02\x08\x03");
        inner::<u64, UInt64>(&vec![1, 2, 3], b"\x08\x01\x08\x02\x08\x03");

        inner::<i32, SInt32>(&vec![1, 2, -3], b"\x08\x02\x08\x04\x08\x05");
        inner::<i64, SInt64>(&vec![1, 2, -3], b"\x08\x02\x08\x04\x08\x05");

        inner::<i32, SFixed32>(
            &vec![1, 2, -3],
            b"\x0d\x01\x00\x00\x00\x0d\x02\x00\x00\x00\x0d\xfd\xff\xff\xff",
        );
        inner::<i64,SFixed64>(&vec![1, 2, -3], b"\x09\x01\x00\x00\x00\x00\x00\x00\x00\x09\x02\x00\x00\x00\x00\x00\x00\x00\x09\xfd\xff\xff\xff\xff\xff\xff\xff");

        inner::<u32, Fixed32>(
            &vec![1, 2, 3],
            b"\x0d\x01\x00\x00\x00\x0d\x02\x00\x00\x00\x0d\x03\x00\x00\x00",
        );
        inner::<u64,Fixed64>(&vec![1, 2, 3],  b"\x09\x01\x00\x00\x00\x00\x00\x00\x00\x09\x02\x00\x00\x00\x00\x00\x00\x00\x09\x03\x00\x00\x00\x00\x00\x00\x00",);

        inner::<f32, Float>(
            &vec![1.0, 2.0, -3.0],
            b"\x0d\x00\x00\x80\x3f\x0d\x00\x00\x00\x40\x0d\x00\x00\x40\xc0",
        );
        inner::<f64, Double>(
            &vec![1.0, 2.0, -3.0],
            b"\x09\x00\x00\x00\x00\x00\x00\xf0\x3f\x09\x00\x00\x00\x00\x00\x00\x00\x40\x09\x00\x00\x00\x00\x00\x00\x08\xc0",
        );

        inner::<bool, Bool>(&vec![true, false], b"\x08\x01\x08\x00");

        let data = vec![String::from("hello"), String::from("world")];
        inner::<String, ProtoString>(
            data.as_ref(),
            b"\x0a\x05\x68\x65\x6c\x6c\x6f\x0a\x05\x77\x6f\x72\x6c\x64",
        );
    }
}