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use crate::{Codec, CodecRejection, ContentType};
crate::macros::__private_decode_trait! {
/// Decoder trait for deserializing bytes into all supported formats.
///
/// Note that feature flags affect this trait differently than normal. In this case,
/// feature flags further restrict the trait instead of being additive. This may change
/// in the future.
}
#[cfg(feature = "serde")]
impl<'b, T> Codec<T>
where
T: serde::de::Deserialize<'b>,
{
/// Attempts to deserialize the given bytes as [JSON](https://www.json.org).
///
/// # Errors
///
/// See [`serde_json::from_slice`].
#[cfg(feature = "json")]
#[inline]
pub fn from_json(bytes: &'b [u8]) -> Result<Self, serde_json::Error> {
serde_json::from_slice(bytes).map(Self)
}
/// Attempts to deserialize the given bytes as [URL-encoded form data](https://url.spec.whatwg.org/#urlencoded-parsing).
///
/// # Errors
///
/// See [`serde_urlencoded::from_bytes`].
#[cfg(feature = "form")]
#[inline]
pub fn from_form(bytes: &'b [u8]) -> Result<Self, serde_urlencoded::de::Error> {
serde_urlencoded::from_bytes(bytes).map(Self)
}
/// Attempts to deserialize the given bytes as [MessagePack](https://msgpack.org).
/// Does not perform any validation if the `validator` feature is enabled. For
/// validation, use [`Self::from_bytes`].
///
/// # Errors
///
/// See [`rmp_serde::from_slice`].
#[cfg(feature = "msgpack")]
#[inline]
pub fn from_msgpack(bytes: &'b [u8]) -> Result<Self, rmp_serde::decode::Error> {
let mut deserializer = rmp_serde::Deserializer::new(bytes).with_human_readable();
serde::Deserialize::deserialize(&mut deserializer).map(Self)
}
/// Attemps to deserialize the given bytes as [CBOR](https://cbor.io).
/// Does not perform any validation if the `validator` feature is enabled. For
/// validation, use [`Self::from_bytes`].
///
/// # Errors
///
/// See [`ciborium::from_slice`].
#[cfg(feature = "cbor")]
#[inline]
pub fn from_cbor(bytes: &'b [u8]) -> Result<Self, ciborium::de::Error<std::io::Error>> {
ciborium::from_reader(bytes).map(Self)
}
/// Attempts to deserialize the given text as [YAML](https://yaml.org).
/// Does not perform any validation if the `validator` feature is enabled. For
/// validation, use [`Self::from_bytes`].
///
/// # Errors
///
/// See [`serde_yaml::from_slice`].
#[cfg(feature = "yaml")]
#[inline]
pub fn from_yaml(text: &'b str) -> Result<Self, serde_yaml::Error> {
serde_yaml::from_str(text).map(Self)
}
/// Attempts to deserialize the given text as [TOML](https://toml.io).
/// Does not perform any validation if the `validator` feature is enabled. For
/// validation, use [`Self::from_bytes`].
///
/// # Errors
///
/// See [`toml::from_str`].
#[cfg(feature = "toml")]
#[inline]
pub fn from_toml(text: &'b str) -> Result<Self, toml::de::Error> {
toml::from_str(text).map(Self)
}
}
impl<'b, T> Codec<T> {
/// Attempts to deserialize the given bytes as [Bincode](https://github.com/bincode-org/bincode).
/// Does not perform any validation if the `validator` feature is enabled. For
/// validation, use [`Self::from_bytes`].
///
/// # Errors
///
/// See [`bincode::decode_from_slice`].
#[cfg(feature = "bincode")]
#[inline]
pub fn from_bincode(bytes: &'b [u8]) -> Result<Self, bincode::error::DecodeError>
where
T: bincode::BorrowDecode<'b, ()>,
{
bincode::borrow_decode_from_slice(bytes, bincode::config::standard()).map(|t| Self(t.0))
}
/// Attempts to deserialize the given bytes as [Bitcode](https://github.com/SoftbearStudios/bitcode).
/// Does not perform any validation if the `validator` feature is enabled. For
/// validation, use [`Self::from_bytes`].
///
/// # Errors
///
/// See [`bitcode::decode`].
#[cfg(feature = "bitcode")]
#[inline]
pub fn from_bitcode(bytes: &'b [u8]) -> Result<Self, bitcode::Error>
where
T: bitcode::Decode<'b>,
{
bitcode::decode(bytes).map(Self)
}
/// Attempts to deserialize the given bytes as the specified [`ContentType`].
///
/// # Errors
///
/// See [`CodecRejection`].
pub fn from_bytes(bytes: &'b [u8], content_type: ContentType) -> Result<Self, CodecRejection>
where
T: CodecDecode<'b>,
{
let codec = match content_type {
#[cfg(feature = "json")]
ContentType::Json => Self::from_json(bytes)?,
#[cfg(feature = "form")]
ContentType::Form => Self::from_form(bytes)?,
#[cfg(feature = "msgpack")]
ContentType::MsgPack => Self::from_msgpack(bytes)?,
#[cfg(feature = "bincode")]
ContentType::Bincode => Self::from_bincode(bytes)?,
#[cfg(feature = "bitcode")]
ContentType::Bitcode => Self::from_bitcode(bytes)?,
#[cfg(feature = "cbor")]
ContentType::Cbor => Self::from_cbor(bytes)?,
#[cfg(feature = "yaml")]
ContentType::Yaml => Self::from_yaml(core::str::from_utf8(bytes)?)?,
#[cfg(feature = "toml")]
ContentType::Toml => Self::from_toml(core::str::from_utf8(bytes)?)?,
};
#[cfg(feature = "validator")]
validator::Validate::validate(&codec)?;
Ok(codec)
}
}