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Expand no_root! macro #106

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merged 2 commits into from
Mar 15, 2024
Merged

Expand no_root! macro #106

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030d301
Expand `no_root` macro
hollowness-inside Mar 15, 2024
4eb3cd5
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hollowness-inside Mar 15, 2024
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148 changes: 56 additions & 92 deletions fastnbt/src/ser/serializer.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -30,12 +30,23 @@ pub struct Serializer<W: Write> {
}

macro_rules! no_root {
($v:ident, $t:ty) => {
fn $v(self, _: $t) -> Result<()> {
($v:ident($($t:ty),* $(,)?) -> $r:ty) => {
fn $v(self, $(_: $t),*) -> Result<$r> {
Err(Error::no_root_compound())
}
};

($v:ident<T>($($t:ty),* $(,)?)) => {
fn $v<T: ?Sized>(self, $(_: $t),*) -> Result<Self::Ok> {
Err(Error::no_root_compound())
}
};

($v:ident($($t:ty),* $(,)?)) => {
no_root!{$v($($t,)*) -> ()}
};
}

impl<'a, W: 'a + Write> serde::ser::Serializer for &'a mut Serializer<W> {
type Ok = ();
type Error = Error;
Expand All @@ -47,94 +58,13 @@ impl<'a, W: 'a + Write> serde::ser::Serializer for &'a mut Serializer<W> {
type SerializeStruct = SerializerMap<'a, W>;
type SerializeStructVariant = Impossible<(), Error>;

no_root!(serialize_bool, bool);
no_root!(serialize_i8, i8);
no_root!(serialize_i16, i16);
no_root!(serialize_i32, i32);
no_root!(serialize_i64, i64);
no_root!(serialize_i128, i128);
no_root!(serialize_u8, u8);
no_root!(serialize_u16, u16);
no_root!(serialize_u32, u32);
no_root!(serialize_u64, u64);
no_root!(serialize_u128, u128);
no_root!(serialize_f32, f32);
no_root!(serialize_f64, f64);
no_root!(serialize_char, char);
no_root!(serialize_str, &str);
no_root!(serialize_bytes, &[u8]);
no_root!(serialize_unit_struct, &'static str);

fn serialize_none(self) -> Result<()> {
Err(Error::no_root_compound())
}

fn serialize_some<T: ?Sized>(self, _value: &T) -> Result<()>
where
T: Serialize,
{
Err(Error::no_root_compound())
}

fn serialize_unit(self) -> Result<()> {
Err(Error::no_root_compound())
}

fn serialize_unit_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
) -> Result<()> {
Err(Error::no_root_compound())
}

fn serialize_newtype_struct<T: ?Sized>(self, _name: &'static str, value: &T) -> Result<()>
where
T: Serialize,
{
value.serialize(self)
}

fn serialize_newtype_variant<T: ?Sized>(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_value: &T,
) -> Result<()>
where
T: Serialize,
{
Err(Error::no_root_compound())
}

fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq> {
Err(Error::no_root_compound())
}

fn serialize_tuple(self, _len: usize) -> Result<Self::SerializeTuple> {
Err(Error::no_root_compound())
}

fn serialize_tuple_struct(
self,
_name: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleStruct> {
Err(Error::no_root_compound())
}

fn serialize_tuple_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleVariant> {
Err(Error::no_root_compound())
}

fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap> {
// Take the root name to avoid a clone. Need to be careful not to use
// self.root_name elsewhere.
Expand All @@ -151,15 +81,49 @@ impl<'a, W: 'a + Write> serde::ser::Serializer for &'a mut Serializer<W> {
self.serialize_map(Some(len))
}

fn serialize_struct_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeStructVariant> {
Err(Error::no_root_compound())
}
no_root!(serialize_bool(bool));
no_root!(serialize_i8(i8));
no_root!(serialize_i16(i16));
no_root!(serialize_i32(i32));
no_root!(serialize_i64(i64));
no_root!(serialize_i128(i128));
no_root!(serialize_u8(u8));
no_root!(serialize_u16(u16));
no_root!(serialize_u32(u32));
no_root!(serialize_u64(u64));
no_root!(serialize_u128(u128));
no_root!(serialize_f32(f32));
no_root!(serialize_f64(f64));
no_root!(serialize_char(char));
no_root!(serialize_str(&str));
no_root!(serialize_bytes(&[u8]));
no_root!(serialize_none());
no_root!(serialize_some<T>(&T));
no_root!(serialize_unit());
no_root!(serialize_unit_struct(&'static str));
no_root!(serialize_unit_variant(&'static str, u32, &'static str));
no_root!(serialize_newtype_variant<T>(&'static str, u32, &'static str, &T));
no_root!(serialize_seq(Option<usize>) -> Self::SerializeSeq);
no_root!(serialize_tuple(usize) -> Self::SerializeSeq);
no_root!(serialize_tuple_struct(&'static str, usize) -> Self::SerializeTupleStruct);

no_root!(
serialize_tuple_variant(
&'static str,
u32,
&'static str,
usize,
) -> Self::SerializeTupleVariant
);

no_root!(
serialize_struct_variant(
&'static str,
u32,
&'static str,
usize,
) -> Self::SerializeStructVariant
);
}

pub struct SerializerMap<'a, W: Write> {
Expand Down
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