serde_magnus 0.2.0

use magnus::{RArray, RHash, RString, Value};
use serde::Serialize;

use super::{
    enums::nest, MapSerializer, SeqSerializer, StructSerializer, StructVariantSerializer,
    TupleVariantSerializer,
};
use crate::error::Error;

pub struct Serializer;

impl serde::Serializer for Serializer {
    type Ok = Value;
    type Error = Error;

    type SerializeSeq = SeqSerializer;
    type SerializeTuple = SeqSerializer;
    type SerializeTupleStruct = SeqSerializer;
    type SerializeTupleVariant = TupleVariantSerializer;
    type SerializeMap = MapSerializer;
    type SerializeStruct = StructSerializer;
    type SerializeStructVariant = StructVariantSerializer;

    fn serialize_bool(self, value: bool) -> Result<Self::Ok, Self::Error> {
        Ok(value.into())
    }

    fn serialize_i8(self, value: i8) -> Result<Self::Ok, Self::Error> {
        Ok(value.into())
    }

    fn serialize_i16(self, value: i16) -> Result<Self::Ok, Self::Error> {
        Ok(value.into())
    }

    fn serialize_i32(self, value: i32) -> Result<Self::Ok, Self::Error> {
        Ok(value.into())
    }

    fn serialize_i64(self, value: i64) -> Result<Self::Ok, Self::Error> {
        Ok(value.into())
    }

    fn serialize_u8(self, value: u8) -> Result<Self::Ok, Self::Error> {
        Ok(value.into())
    }

    fn serialize_u16(self, value: u16) -> Result<Self::Ok, Self::Error> {
        Ok(value.into())
    }

    fn serialize_u32(self, value: u32) -> Result<Self::Ok, Self::Error> {
        Ok(value.into())
    }

    fn serialize_u64(self, value: u64) -> Result<Self::Ok, Self::Error> {
        Ok(value.into())
    }

    fn serialize_f32(self, value: f32) -> Result<Self::Ok, Self::Error> {
        Ok(value.into())
    }

    fn serialize_f64(self, value: f64) -> Result<Self::Ok, Self::Error> {
        Ok(value.into())
    }

    fn serialize_char(self, value: char) -> Result<Self::Ok, Self::Error> {
        Ok(value.into())
    }

    fn serialize_str(self, value: &str) -> Result<Self::Ok, Self::Error> {
        Ok(value.into())
    }

    fn serialize_bytes(self, value: &[u8]) -> Result<Self::Ok, Self::Error> {
        Ok(RString::from_slice(value).into())
    }

    fn serialize_none(self) -> Result<Self::Ok, Self::Error> {
        Ok(().into())
    }

    fn serialize_some<Value>(self, value: &Value) -> Result<Self::Ok, Self::Error>
    where
        Value: Serialize + ?Sized,
    {
        value.serialize(self)
    }

    fn serialize_unit(self) -> Result<Self::Ok, Self::Error> {
        Ok(().into())
    }

    fn serialize_unit_struct(self, _name: &'static str) -> Result<Self::Ok, Self::Error> {
        Ok(().into())
    }

    fn serialize_unit_variant(
        self,
        _name: &'static str,
        _index: u32,
        variant: &'static str,
    ) -> Result<Self::Ok, Self::Error> {
        Ok(variant.into())
    }

    fn serialize_newtype_struct<Value>(
        self,
        _name: &'static str,
        value: &Value,
    ) -> Result<Self::Ok, Self::Error>
    where
        Value: Serialize + ?Sized,
    {
        value.serialize(self)
    }

    fn serialize_newtype_variant<Value>(
        self,
        _name: &'static str,
        _index: u32,
        variant: &'static str,
        value: &Value,
    ) -> Result<Self::Ok, Self::Error>
    where
        Value: Serialize + ?Sized,
    {
        nest(variant, &value.serialize(self)?)
    }

    fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
        Ok(SeqSerializer::new(RArray::with_capacity(len.unwrap_or(0))))
    }

    fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple, Self::Error> {
        self.serialize_seq(Some(len))
    }

    fn serialize_tuple_struct(
        self,
        _name: &'static str,
        len: usize,
    ) -> Result<Self::SerializeTupleStruct, Self::Error> {
        self.serialize_seq(Some(len))
    }

    fn serialize_tuple_variant(
        self,
        _name: &'static str,
        _index: u32,
        variant: &'static str,
        len: usize,
    ) -> Result<Self::SerializeTupleVariant, Self::Error> {
        Ok(TupleVariantSerializer::new(
            variant,
            RArray::with_capacity(len),
        ))
    }

    fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
        Ok(MapSerializer::new(RHash::new()))
    }

    fn serialize_struct(
        self,
        _name: &'static str,
        _len: usize,
    ) -> Result<Self::SerializeStruct, Self::Error> {
        Ok(StructSerializer::new(RHash::new()))
    }

    fn serialize_struct_variant(
        self,
        _name: &'static str,
        _index: u32,
        variant: &'static str,
        _len: usize,
    ) -> Result<Self::SerializeStructVariant, Self::Error> {
        Ok(StructVariantSerializer::new(variant, RHash::new()))
    }
}