gel_protocol/serialization/decode/queryable/

scalars.rs

use bytes::Bytes;

use crate::queryable::DescriptorMismatch;
use crate::queryable::{Decoder, DescriptorContext, Queryable};

use crate::codec;
use crate::descriptors::TypePos;
use crate::errors::DecodeError;
use crate::model::{BigInt, Decimal, Json, RelativeDuration, Uuid};
use crate::model::{ConfigMemory, DateDuration};
use crate::model::{Datetime, Duration, LocalDate, LocalDatetime, LocalTime};
use crate::serialization::decode::RawCodec;
use std::time::SystemTime;

pub(crate) fn check_scalar(
    ctx: &DescriptorContext,
    type_pos: TypePos,
    type_id: Uuid,
    name: &str,
) -> Result<(), DescriptorMismatch> {
    use crate::descriptors::Descriptor::{BaseScalar, Scalar};
    let desc = ctx.get(type_pos)?;
    match desc {
        Scalar(scalar) if scalar.base_type_pos.is_some() => {
            return check_scalar(ctx, scalar.base_type_pos.unwrap(), type_id, name);
        }
        Scalar(scalar) if *scalar.id == type_id => {
            return Ok(());
        }
        BaseScalar(base) if *base.id == type_id => {
            return Ok(());
        }
        _ => {}
    }
    Err(ctx.wrong_type(desc, name))
}

pub trait DecodeScalar: for<'a> RawCodec<'a> + Sized {
    fn uuid() -> Uuid;
    fn typename() -> &'static str;
}

impl<T: DecodeScalar> Queryable for T {
    fn decode(_decoder: &Decoder, buf: &[u8]) -> Result<Self, DecodeError> {
        RawCodec::decode(buf)
    }
    fn check_descriptor(
        ctx: &DescriptorContext,
        type_pos: TypePos,
    ) -> Result<(), DescriptorMismatch> {
        check_scalar(ctx, type_pos, T::uuid(), T::typename())
    }
}

impl DecodeScalar for String {
    fn uuid() -> Uuid {
        codec::STD_STR
    }
    fn typename() -> &'static str {
        "std::str"
    }
}

impl DecodeScalar for Bytes {
    fn uuid() -> Uuid {
        codec::STD_BYTES
    }
    fn typename() -> &'static str {
        "std::bytes"
    }
}

impl DecodeScalar for Json {
    fn uuid() -> Uuid {
        codec::STD_JSON
    }
    fn typename() -> &'static str {
        "std::json"
    }
}

/*
impl DecodeScalar for Vec<u8> {
    fn uuid() -> Uuid { codec::STD_BYTES }
    fn typename() -> &'static str { "std::bytes" }
}
*/

impl DecodeScalar for i16 {
    fn uuid() -> Uuid {
        codec::STD_INT16
    }
    fn typename() -> &'static str {
        "std::int16"
    }
}

impl DecodeScalar for i32 {
    fn uuid() -> Uuid {
        codec::STD_INT32
    }
    fn typename() -> &'static str {
        "std::int32"
    }
}

impl DecodeScalar for i64 {
    fn uuid() -> Uuid {
        codec::STD_INT64
    }
    fn typename() -> &'static str {
        "std::int64"
    }
}

impl DecodeScalar for f32 {
    fn uuid() -> Uuid {
        codec::STD_FLOAT32
    }
    fn typename() -> &'static str {
        "std::float32"
    }
}

impl DecodeScalar for f64 {
    fn uuid() -> Uuid {
        codec::STD_FLOAT64
    }
    fn typename() -> &'static str {
        "std::float64"
    }
}

impl DecodeScalar for Uuid {
    fn uuid() -> Uuid {
        codec::STD_UUID
    }
    fn typename() -> &'static str {
        "std::uuid"
    }
}

impl DecodeScalar for bool {
    fn uuid() -> Uuid {
        codec::STD_BOOL
    }
    fn typename() -> &'static str {
        "std::bool"
    }
}

impl DecodeScalar for BigInt {
    fn uuid() -> Uuid {
        codec::STD_BIGINT
    }
    fn typename() -> &'static str {
        "std::bigint"
    }
}

#[cfg(feature = "num-bigint")]
impl DecodeScalar for num_bigint::BigInt {
    fn uuid() -> Uuid {
        codec::STD_BIGINT
    }
    fn typename() -> &'static str {
        "std::bigint"
    }
}

impl DecodeScalar for Decimal {
    fn uuid() -> Uuid {
        codec::STD_DECIMAL
    }
    fn typename() -> &'static str {
        "std::decimal"
    }
}

#[cfg(feature = "bigdecimal")]
impl DecodeScalar for bigdecimal::BigDecimal {
    fn uuid() -> Uuid {
        codec::STD_DECIMAL
    }
    fn typename() -> &'static str {
        "std::decimal"
    }
}

impl DecodeScalar for LocalDatetime {
    fn uuid() -> Uuid {
        codec::CAL_LOCAL_DATETIME
    }
    fn typename() -> &'static str {
        "cal::local_datetime"
    }
}

#[cfg(feature = "chrono")]
impl DecodeScalar for chrono::NaiveDateTime {
    fn uuid() -> Uuid {
        codec::CAL_LOCAL_DATETIME
    }
    fn typename() -> &'static str {
        "cal::local_datetime"
    }
}

impl DecodeScalar for LocalDate {
    fn uuid() -> Uuid {
        codec::CAL_LOCAL_DATE
    }
    fn typename() -> &'static str {
        "cal::local_date"
    }
}

#[cfg(feature = "chrono")]
impl DecodeScalar for chrono::NaiveDate {
    fn uuid() -> Uuid {
        codec::CAL_LOCAL_DATE
    }
    fn typename() -> &'static str {
        "cal::local_date"
    }
}

impl DecodeScalar for LocalTime {
    fn uuid() -> Uuid {
        codec::CAL_LOCAL_TIME
    }
    fn typename() -> &'static str {
        "cal::local_time"
    }
}

#[cfg(feature = "chrono")]
impl DecodeScalar for chrono::NaiveTime {
    fn uuid() -> Uuid {
        codec::CAL_LOCAL_TIME
    }
    fn typename() -> &'static str {
        "cal::local_time"
    }
}

impl DecodeScalar for Duration {
    fn uuid() -> Uuid {
        codec::STD_DURATION
    }
    fn typename() -> &'static str {
        "std::duration"
    }
}

impl DecodeScalar for RelativeDuration {
    fn uuid() -> Uuid {
        codec::CAL_RELATIVE_DURATION
    }
    fn typename() -> &'static str {
        "cal::relative_duration"
    }
}

impl DecodeScalar for SystemTime {
    fn uuid() -> Uuid {
        codec::STD_DATETIME
    }
    fn typename() -> &'static str {
        "std::datetime"
    }
}

impl DecodeScalar for Datetime {
    fn uuid() -> Uuid {
        codec::STD_DATETIME
    }
    fn typename() -> &'static str {
        "std::datetime"
    }
}

#[cfg(feature = "chrono")]
impl DecodeScalar for chrono::DateTime<chrono::Utc> {
    fn uuid() -> Uuid {
        codec::STD_DATETIME
    }
    fn typename() -> &'static str {
        "std::datetime"
    }
}

impl DecodeScalar for ConfigMemory {
    fn uuid() -> Uuid {
        codec::CFG_MEMORY
    }
    fn typename() -> &'static str {
        "cfg::memory"
    }
}

impl DecodeScalar for DateDuration {
    fn uuid() -> Uuid {
        codec::CAL_DATE_DURATION
    }
    fn typename() -> &'static str {
        "cal::date_duration"
    }
}