/rust/registry/src/index.crates.io-1949cf8c6b5b557f/serde_dhall-0.13.0/src/serialize.rs

Source
use serde::ser;
use std::collections::BTreeMap;

use dhall::syntax::NumKind;

use crate::value::SimpleValue;
use crate::{Error, ErrorKind, Result, SimpleType, Value};
use SimpleValue::*;

pub trait Sealed {}

/// A data structure that can be serialized from a Dhall expression.
///
/// This is automatically implemented for any type that [serde] can serialize.
/// In fact, this trait cannot be implemented manually. To implement it for your type,
/// use serde's derive mechanism.
///
/// # Example
///
/// ```rust
/// # fn main() -> serde_dhall::Result<()> {
/// use serde::Serialize;
///
/// // Use serde's derive
/// #[derive(Serialize)]
/// struct Point {
///     x: u64,
///     y: u64,
/// }
///
/// // Convert a Point to a Dhall string.
/// let point = Point { x: 0, y: 0 };
/// let point_str = serde_dhall::serialize(&point).to_string()?;
/// assert_eq!(point_str, "{ x = 0, y = 0 }".to_string());
/// # Ok(())
/// # }
/// ```
///
/// [serde]: https://serde.rs
pub trait ToDhall: Sealed {
    #[doc(hidden)]
    fn to_dhall(&self, ty: Option<&SimpleType>) -> Result<Value>;
}

impl<T> Sealed for T where T: ser::Serialize {}

impl<T> ToDhall for T
where
    T: ser::Serialize,
{
    fn to_dhall(&self, ty: Option<&SimpleType>) -> Result<Value> {
        let sval: SimpleValue = self.serialize(Serializer)?;
        sval.into_value(ty)
    }
}

#[derive(Default, Clone, Copy)]
struct Serializer;

impl ser::Serializer for Serializer {
    type Ok = SimpleValue;
    type Error = Error;

    type SerializeSeq = SeqSerializer;
    type SerializeTuple = TupleSerializer;
    type SerializeTupleStruct = ser::Impossible<Self::Ok, Self::Error>;
    type SerializeTupleVariant = ser::Impossible<Self::Ok, Self::Error>;
    type SerializeMap = MapSerializer;
    type SerializeStruct = StructSerializer;
    type SerializeStructVariant = StructVariantSerializer;

    fn serialize_bool(self, v: bool) -> Result<Self::Ok> {
        Ok(Num(NumKind::Bool(v)))
    }

    fn serialize_i8(self, v: i8) -> Result<Self::Ok> {
        self.serialize_i64(i64::from(v))
    }
    fn serialize_i16(self, v: i16) -> Result<Self::Ok> {
        self.serialize_i64(i64::from(v))
    }
    fn serialize_i32(self, v: i32) -> Result<Self::Ok> {
        self.serialize_i64(i64::from(v))
    }
    fn serialize_i64(self, v: i64) -> Result<Self::Ok> {
        Ok(Num(NumKind::Integer(v)))
    }

    fn serialize_u8(self, v: u8) -> Result<Self::Ok> {
        self.serialize_u64(u64::from(v))
    }
    fn serialize_u16(self, v: u16) -> Result<Self::Ok> {
        self.serialize_u64(u64::from(v))
    }
    fn serialize_u32(self, v: u32) -> Result<Self::Ok> {
        self.serialize_u64(u64::from(v))
    }
    fn serialize_u64(self, v: u64) -> Result<Self::Ok> {
        Ok(Num(NumKind::Natural(v)))
    }

    fn serialize_f32(self, v: f32) -> Result<Self::Ok> {
        self.serialize_f64(f64::from(v))
    }
    fn serialize_f64(self, v: f64) -> Result<Self::Ok> {
        Ok(Num(NumKind::Double(v.into())))
    }

    fn serialize_char(self, v: char) -> Result<Self::Ok> {
        self.serialize_str(&v.to_string())
    }
    fn serialize_str(self, v: &str) -> Result<Self::Ok> {
        Ok(Text(v.to_owned()))
    }

    fn serialize_bytes(self, _v: &[u8]) -> Result<Self::Ok> {
        Err(ErrorKind::Serialize(
            "Unsupported data for serialization: byte array".to_owned(),
        )
        .into())
    }

    fn serialize_none(self) -> Result<Self::Ok> {
        Ok(Optional(None))
    }
    fn serialize_some<T>(self, v: &T) -> Result<Self::Ok>
    where
        T: ?Sized + ser::Serialize,
    {
        Ok(Optional(Some(Box::new(v.serialize(self)?))))
    }

    fn serialize_unit(self) -> Result<Self::Ok> {
        Ok(Record(Default::default()))
    }

    fn serialize_unit_struct(self, _name: &'static str) -> Result<Self::Ok> {
        self.serialize_unit()
    }
    fn serialize_newtype_struct<T>(
        self,
        _name: &'static str,
        _value: &T,
    ) -> Result<Self::Ok>
    where
        T: ?Sized + ser::Serialize,
    {
        Err(ErrorKind::Serialize(
            "Unsupported data for serialization: newtype struct".to_owned(),
        )
        .into())
    }
    fn serialize_struct(
        self,
        _name: &'static str,
        _len: usize,
    ) -> Result<Self::SerializeStruct> {
        Ok(StructSerializer::default())
    }

    fn serialize_unit_variant(
        self,
        _name: &'static str,
        _variant_index: u32,
        variant: &'static str,
    ) -> Result<Self::Ok> {
        Ok(Union(variant.to_owned(), None))
    }
    fn serialize_newtype_variant<T>(
        self,
        _name: &'static str,
        _variant_index: u32,
        variant: &'static str,
        value: &T,
    ) -> Result<Self::Ok>
    where
        T: ?Sized + ser::Serialize,
    {
        let value = value.serialize(self)?;
        Ok(Union(variant.to_owned(), Some(Box::new(value))))
    }
    fn serialize_tuple_variant(
        self,
        _name: &'static str,
        _variant_index: u32,
        _variant: &'static str,
        _len: usize,
    ) -> Result<Self::SerializeTupleVariant> {
        Err(ErrorKind::Serialize(
            "Unsupported data for serialization: tuple variant".to_owned(),
        )
        .into())
    }
    fn serialize_struct_variant(
        self,
        _name: &'static str,
        _variant_index: u32,
        variant: &'static str,
        _len: usize,
    ) -> Result<Self::SerializeStructVariant> {
        Ok(StructVariantSerializer {
            variant,
            value: BTreeMap::new(),
        })
    }

    fn serialize_tuple(self, _len: usize) -> Result<Self::SerializeTuple> {
        Ok(TupleSerializer::default())
    }
    fn serialize_tuple_struct(
        self,
        _name: &'static str,
        _len: usize,
    ) -> Result<Self::SerializeTupleStruct> {
        Err(ErrorKind::Serialize(
            "Unsupported data for serialization: tuple struct".to_owned(),
        )
        .into())
    }

    fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq> {
        Ok(SeqSerializer::default())
    }

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

#[derive(Default)]
struct SeqSerializer(Vec<SimpleValue>);

impl ser::SerializeSeq for SeqSerializer {
    type Ok = SimpleValue;
    type Error = Error;

    fn serialize_element<T>(&mut self, value: &T) -> Result<()>
    where
        T: ?Sized + ser::Serialize,
    {
        self.0.push(value.serialize(Serializer)?);
        Ok(())
    }

    fn end(self) -> Result<Self::Ok> {
        Ok(List(self.0))
    }
}

#[derive(Default)]
struct TupleSerializer(Vec<SimpleValue>);

impl ser::SerializeTuple for TupleSerializer {
    type Ok = SimpleValue;
    type Error = Error;

    fn serialize_element<T>(&mut self, value: &T) -> Result<()>
    where
        T: ?Sized + ser::Serialize,
    {
        self.0.push(value.serialize(Serializer)?);
        Ok(())
    }

    fn end(self) -> Result<Self::Ok> {
        Ok(Record(
            self.0
                .into_iter()
                .enumerate()
                .map(|(i, x)| (format!("_{}", i + 1), x))
                .collect(),
        ))
    }
}

#[derive(Default)]
struct MapSerializer {
    map: BTreeMap<String, SimpleValue>,
    key: Option<String>,
    val: Option<SimpleValue>,
}

impl ser::SerializeMap for MapSerializer {
    type Ok = SimpleValue;
    type Error = Error;

    fn serialize_key<T>(&mut self, key: &T) -> Result<()>
    where
        T: ?Sized + ser::Serialize,
    {
        let key = match key.serialize(Serializer)? {
            Text(key) => key,
            _ => return Err(<Error as ser::Error>::custom("not a string")),
        };
        if let Some(val) = self.val.take() {
            self.map.insert(key, val);
        } else {
            self.key = Some(key);
        }
        Ok(())
    }

    fn serialize_value<T>(&mut self, val: &T) -> Result<()>
    where
        T: ?Sized + ser::Serialize,
    {
        let val: SimpleValue = val.serialize(Serializer)?;
        if let Some(key) = self.key.take() {
            self.map.insert(key, val);
        } else {
            self.val = Some(val);
        }
        Ok(())
    }

    fn end(self) -> Result<Self::Ok> {
        Ok(Record(self.map))
    }
}

#[derive(Default)]
struct StructSerializer(BTreeMap<String, SimpleValue>);

impl ser::SerializeStruct for StructSerializer {
    type Ok = SimpleValue;
    type Error = Error;

    fn serialize_field<T>(&mut self, key: &'static str, val: &T) -> Result<()>
    where
        T: ?Sized + ser::Serialize,
    {
        let val: SimpleValue = val.serialize(Serializer)?;
        self.0.insert(key.into(), val);
        Ok(())
    }

    fn end(self) -> Result<Self::Ok> {
        Ok(Record(self.0))
    }
}

struct StructVariantSerializer {
    variant: &'static str,
    value: BTreeMap<String, SimpleValue>,
}

impl ser::SerializeStructVariant for StructVariantSerializer {
    type Ok = SimpleValue;
    type Error = Error;

    fn serialize_field<T>(&mut self, key: &'static str, val: &T) -> Result<()>
    where
        T: ?Sized + ser::Serialize,
    {
        let val: SimpleValue = val.serialize(Serializer)?;
        self.value.insert(key.into(), val);
        Ok(())
    }

    fn end(self) -> Result<Self::Ok> {
        Ok(SimpleValue::Union(
            self.variant.to_string(),
            Some(Box::new(Record(self.value))),
        ))
    }
}

impl serde::ser::Serialize for SimpleValue {
    fn serialize<S>(
        &self,
        serializer: S,
    ) -> std::result::Result<S::Ok, S::Error>
    where
        S: serde::ser::Serializer,
    {
        use serde::ser::{SerializeMap, SerializeSeq};
        use NumKind::*;
        use SimpleValue::*;

        match self {
            Num(Bool(x)) => serializer.serialize_bool(*x),
            Num(Natural(x)) => serializer.serialize_u64(*x),
            Num(Integer(x)) => serializer.serialize_i64(*x),
            Num(Double(x)) => serializer.serialize_f64((*x).into()),
            Text(x) => serializer.serialize_str(x),
            List(xs) => {
                let mut seq = serializer.serialize_seq(Some(xs.len()))?;
                for x in xs {
                    seq.serialize_element(x)?;
                }
                seq.end()
            }
            Optional(None) => serializer.serialize_none(),
            Optional(Some(x)) => serializer.serialize_some(x),
            Record(m) => {
                let mut map = serializer.serialize_map(Some(m.len()))?;
                for (k, v) in m {
                    map.serialize_entry(k, v)?;
                }
                map.end()
            }
            // serde's enum support is yet again really limited. We can't avoid a memleak here :(.
            Union(field_name, None) => {
                let field_name: Box<str> = field_name.clone().into();
                serializer.serialize_unit_variant(
                    "SimpleValue",
                    0,
                    Box::leak(field_name),
                )
            }
            Union(field_name, Some(x)) => {
                let field_name: Box<str> = field_name.clone().into();
                serializer.serialize_newtype_variant(
                    "SimpleValue",
                    0,
                    Box::leak(field_name),
                    x,
                )
            }
        }
    }
}

Coverage Report

Created: 2026-03-14 06:47

Line	Count	Source
1		use serde::ser;
2		use std::collections::BTreeMap;
3
4		use dhall::syntax::NumKind;
5
6		use crate::value::SimpleValue;
7		use crate::{Error, ErrorKind, Result, SimpleType, Value};
8		use SimpleValue::*;
9
10		pub trait Sealed {}
11
12		/// A data structure that can be serialized from a Dhall expression.
13		///
14		/// This is automatically implemented for any type that [serde] can serialize.
15		/// In fact, this trait cannot be implemented manually. To implement it for your type,
16		/// use serde's derive mechanism.
17		///
18		/// # Example
19		///
20		/// ```rust
21		/// # fn main() -> serde_dhall::Result<()> {
22		/// use serde::Serialize;
23		///
24		/// // Use serde's derive
25		/// #[derive(Serialize)]
26		/// struct Point {
27		/// x: u64,
28		/// y: u64,
29		/// }
30		///
31		/// // Convert a Point to a Dhall string.
32		/// let point = Point { x: 0, y: 0 };
33		/// let point_str = serde_dhall::serialize(&point).to_string()?;
34		/// assert_eq!(point_str, "{ x = 0, y = 0 }".to_string());
35		/// # Ok(())
36		/// # }
37		/// ```
38		///
39		/// [serde]: https://serde.rs
40		pub trait ToDhall: Sealed {
41		#[doc(hidden)]
42		fn to_dhall(&self, ty: Option<&SimpleType>) -> Result<Value>;
43		}
44
45		impl<T> Sealed for T where T: ser::Serialize {}
46
47		impl<T> ToDhall for T
48		where
49		T: ser::Serialize,
50		{
51	0	fn to_dhall(&self, ty: Option<&SimpleType>) -> Result<Value> {
52	0	let sval: SimpleValue = self.serialize(Serializer)?;
53	0	sval.into_value(ty)
54	0	} Unexecuted instantiation: <&anise::almanac::metaload::metaalmanac::MetaAlmanac as serde_dhall::serialize::ToDhall>::to_dhall Unexecuted instantiation: <&anise::structure::dataset::location_dhall::LocationDhallSet as serde_dhall::serialize::ToDhall>::to_dhall Unexecuted instantiation: <&anise::structure::location::Location as serde_dhall::serialize::ToDhall>::to_dhall Unexecuted instantiation: <_ as serde_dhall::serialize::ToDhall>::to_dhall
55		}
56
57		#[derive(Default, Clone, Copy)]
58		struct Serializer;
59
60		impl ser::Serializer for Serializer {
61		type Ok = SimpleValue;
62		type Error = Error;
63
64		type SerializeSeq = SeqSerializer;
65		type SerializeTuple = TupleSerializer;
66		type SerializeTupleStruct = ser::Impossible<Self::Ok, Self::Error>;
67		type SerializeTupleVariant = ser::Impossible<Self::Ok, Self::Error>;
68		type SerializeMap = MapSerializer;
69		type SerializeStruct = StructSerializer;
70		type SerializeStructVariant = StructVariantSerializer;
71
72	0	fn serialize_bool(self, v: bool) -> Result<Self::Ok> {
73	0	Ok(Num(NumKind::Bool(v)))
74	0	}
75
76	0	fn serialize_i8(self, v: i8) -> Result<Self::Ok> {
77	0	self.serialize_i64(i64::from(v))
78	0	}
79	0	fn serialize_i16(self, v: i16) -> Result<Self::Ok> {
80	0	self.serialize_i64(i64::from(v))
81	0	}
82	0	fn serialize_i32(self, v: i32) -> Result<Self::Ok> {
83	0	self.serialize_i64(i64::from(v))
84	0	}
85	0	fn serialize_i64(self, v: i64) -> Result<Self::Ok> {
86	0	Ok(Num(NumKind::Integer(v)))
87	0	}
88
89	0	fn serialize_u8(self, v: u8) -> Result<Self::Ok> {
90	0	self.serialize_u64(u64::from(v))
91	0	}
92	0	fn serialize_u16(self, v: u16) -> Result<Self::Ok> {
93	0	self.serialize_u64(u64::from(v))
94	0	}
95	0	fn serialize_u32(self, v: u32) -> Result<Self::Ok> {
96	0	self.serialize_u64(u64::from(v))
97	0	}
98	0	fn serialize_u64(self, v: u64) -> Result<Self::Ok> {
99	0	Ok(Num(NumKind::Natural(v)))
100	0	}
101
102	0	fn serialize_f32(self, v: f32) -> Result<Self::Ok> {
103	0	self.serialize_f64(f64::from(v))
104	0	}
105	0	fn serialize_f64(self, v: f64) -> Result<Self::Ok> {
106	0	Ok(Num(NumKind::Double(v.into())))
107	0	}
108
109	0	fn serialize_char(self, v: char) -> Result<Self::Ok> {
110	0	self.serialize_str(&v.to_string())
111	0	}
112	0	fn serialize_str(self, v: &str) -> Result<Self::Ok> {
113	0	Ok(Text(v.to_owned()))
114	0	}
115
116	0	fn serialize_bytes(self, _v: &[u8]) -> Result<Self::Ok> {
117	0	Err(ErrorKind::Serialize(
118	0	"Unsupported data for serialization: byte array".to_owned(),
119	0	)
120	0	.into())
121	0	}
122
123	0	fn serialize_none(self) -> Result<Self::Ok> {
124	0	Ok(Optional(None))
125	0	}
126	0	fn serialize_some<T>(self, v: &T) -> Result<Self::Ok>
127	0	where
128	0	T: ?Sized + ser::Serialize,
129		{
130	0	Ok(Optional(Some(Box::new(v.serialize(self)?))))
131	0	} Unexecuted instantiation: <serde_dhall::serialize::Serializer as serde_core::ser::Serializer>::serialize_some::<alloc::string::String> Unexecuted instantiation: <serde_dhall::serialize::Serializer as serde_core::ser::Serializer>::serialize_some::<i32> Unexecuted instantiation: <serde_dhall::serialize::Serializer as serde_core::ser::Serializer>::serialize_some::<u32> Unexecuted instantiation: <serde_dhall::serialize::Serializer as serde_core::ser::Serializer>::serialize_some::<_>
132
133	0	fn serialize_unit(self) -> Result<Self::Ok> {
134	0	Ok(Record(Default::default()))
135	0	}
136
137	0	fn serialize_unit_struct(self, _name: &'static str) -> Result<Self::Ok> {
138	0	self.serialize_unit()
139	0	}
140	0	fn serialize_newtype_struct<T>(
141	0	self,
142	0	_name: &'static str,
143	0	_value: &T,
144	0	) -> Result<Self::Ok>
145	0	where
146	0	T: ?Sized + ser::Serialize,
147		{
148	0	Err(ErrorKind::Serialize(
149	0	"Unsupported data for serialization: newtype struct".to_owned(),
150	0	)
151	0	.into())
152	0	}
153	0	fn serialize_struct(
154	0	self,
155	0	_name: &'static str,
156	0	_len: usize,
157	0	) -> Result<Self::SerializeStruct> {
158	0	Ok(StructSerializer::default())
159	0	}
160
161	0	fn serialize_unit_variant(
162	0	self,
163	0	_name: &'static str,
164	0	_variant_index: u32,
165	0	variant: &'static str,
166	0	) -> Result<Self::Ok> {
167	0	Ok(Union(variant.to_owned(), None))
168	0	}
169	0	fn serialize_newtype_variant<T>(
170	0	self,
171	0	_name: &'static str,
172	0	_variant_index: u32,
173	0	variant: &'static str,
174	0	value: &T,
175	0	) -> Result<Self::Ok>
176	0	where
177	0	T: ?Sized + ser::Serialize,
178		{
179	0	let value = value.serialize(self)?;
180	0	Ok(Union(variant.to_owned(), Some(Box::new(value))))
181	0	}
182	0	fn serialize_tuple_variant(
183	0	self,
184	0	_name: &'static str,
185	0	_variant_index: u32,
186	0	_variant: &'static str,
187	0	_len: usize,
188	0	) -> Result<Self::SerializeTupleVariant> {
189	0	Err(ErrorKind::Serialize(
190	0	"Unsupported data for serialization: tuple variant".to_owned(),
191	0	)
192	0	.into())
193	0	}
194	0	fn serialize_struct_variant(
195	0	self,
196	0	_name: &'static str,
197	0	_variant_index: u32,
198	0	variant: &'static str,
199	0	_len: usize,
200	0	) -> Result<Self::SerializeStructVariant> {
201	0	Ok(StructVariantSerializer {
202	0	variant,
203	0	value: BTreeMap::new(),
204	0	})
205	0	}
206
207	0	fn serialize_tuple(self, _len: usize) -> Result<Self::SerializeTuple> {
208	0	Ok(TupleSerializer::default())
209	0	}
210	0	fn serialize_tuple_struct(
211	0	self,
212	0	_name: &'static str,
213	0	_len: usize,
214	0	) -> Result<Self::SerializeTupleStruct> {
215	0	Err(ErrorKind::Serialize(
216	0	"Unsupported data for serialization: tuple struct".to_owned(),
217	0	)
218	0	.into())
219	0	}
220
221	0	fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq> {
222	0	Ok(SeqSerializer::default())
223	0	}
224
225	0	fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap> {
226	0	Ok(MapSerializer::default())
227	0	}
228		}
229
230		#[derive(Default)]
231		struct SeqSerializer(Vec<SimpleValue>);
232
233		impl ser::SerializeSeq for SeqSerializer {
234		type Ok = SimpleValue;
235		type Error = Error;
236
237	0	fn serialize_element<T>(&mut self, value: &T) -> Result<()>
238	0	where
239	0	T: ?Sized + ser::Serialize,
240		{
241	0	self.0.push(value.serialize(Serializer)?);
242	0	Ok(())
243	0	} Unexecuted instantiation: <serde_dhall::serialize::SeqSerializer as serde_core::ser::SerializeSeq>::serialize_element::<&anise::structure::location::TerrainMask> Unexecuted instantiation: <serde_dhall::serialize::SeqSerializer as serde_core::ser::SerializeSeq>::serialize_element::<&anise::almanac::metaload::metafile::MetaFile> Unexecuted instantiation: <serde_dhall::serialize::SeqSerializer as serde_core::ser::SerializeSeq>::serialize_element::<&anise::structure::dataset::location_dhall::LocationDhallSetEntry> Unexecuted instantiation: <serde_dhall::serialize::SeqSerializer as serde_core::ser::SerializeSeq>::serialize_element::<_>
244
245	0	fn end(self) -> Result<Self::Ok> {
246	0	Ok(List(self.0))
247	0	}
248		}
249
250		#[derive(Default)]
251		struct TupleSerializer(Vec<SimpleValue>);
252
253		impl ser::SerializeTuple for TupleSerializer {
254		type Ok = SimpleValue;
255		type Error = Error;
256
257	0	fn serialize_element<T>(&mut self, value: &T) -> Result<()>
258	0	where
259	0	T: ?Sized + ser::Serialize,
260		{
261	0	self.0.push(value.serialize(Serializer)?);
262	0	Ok(())
263	0	}
264
265	0	fn end(self) -> Result<Self::Ok> {
266		Ok(Record(
267	0	self.0
268	0	.into_iter()
269	0	.enumerate()
270	0	.map(\|(i, x)\| (format!("_{}", i + 1), x))
271	0	.collect(),
272		))
273	0	}
274		}
275
276		#[derive(Default)]
277		struct MapSerializer {
278		map: BTreeMap<String, SimpleValue>,
279		key: Option<String>,
280		val: Option<SimpleValue>,
281		}
282
283		impl ser::SerializeMap for MapSerializer {
284		type Ok = SimpleValue;
285		type Error = Error;
286
287	0	fn serialize_key<T>(&mut self, key: &T) -> Result<()>
288	0	where
289	0	T: ?Sized + ser::Serialize,
290		{
291	0	let key = match key.serialize(Serializer)? {
292	0	Text(key) => key,
293	0	_ => return Err(<Error as ser::Error>::custom("not a string")),
294		};
295	0	if let Some(val) = self.val.take() {
296	0	self.map.insert(key, val);
297	0	} else {
298	0	self.key = Some(key);
299	0	}
300	0	Ok(())
301	0	}
302
303	0	fn serialize_value<T>(&mut self, val: &T) -> Result<()>
304	0	where
305	0	T: ?Sized + ser::Serialize,
306		{
307	0	let val: SimpleValue = val.serialize(Serializer)?;
308	0	if let Some(key) = self.key.take() {
309	0	self.map.insert(key, val);
310	0	} else {
311	0	self.val = Some(val);
312	0	}
313	0	Ok(())
314	0	}
315
316	0	fn end(self) -> Result<Self::Ok> {
317	0	Ok(Record(self.map))
318	0	}
319		}
320
321		#[derive(Default)]
322		struct StructSerializer(BTreeMap<String, SimpleValue>);
323
324		impl ser::SerializeStruct for StructSerializer {
325		type Ok = SimpleValue;
326		type Error = Error;
327
328	0	fn serialize_field<T>(&mut self, key: &'static str, val: &T) -> Result<()>
329	0	where
330	0	T: ?Sized + ser::Serialize,
331		{
332	0	let val: SimpleValue = val.serialize(Serializer)?;
333	0	self.0.insert(key.into(), val);
334	0	Ok(())
335	0	} Unexecuted instantiation: <serde_dhall::serialize::StructSerializer as serde_core::ser::SerializeStruct>::serialize_field::<alloc::vec::Vec<anise::structure::location::TerrainMask>> Unexecuted instantiation: <serde_dhall::serialize::StructSerializer as serde_core::ser::SerializeStruct>::serialize_field::<alloc::vec::Vec<anise::almanac::metaload::metafile::MetaFile>> Unexecuted instantiation: <serde_dhall::serialize::StructSerializer as serde_core::ser::SerializeStruct>::serialize_field::<alloc::vec::Vec<anise::structure::dataset::location_dhall::LocationDhallSetEntry>> Unexecuted instantiation: <serde_dhall::serialize::StructSerializer as serde_core::ser::SerializeStruct>::serialize_field::<core::option::Option<alloc::string::String>> Unexecuted instantiation: <serde_dhall::serialize::StructSerializer as serde_core::ser::SerializeStruct>::serialize_field::<core::option::Option<i32>> Unexecuted instantiation: <serde_dhall::serialize::StructSerializer as serde_core::ser::SerializeStruct>::serialize_field::<core::option::Option<u32>> Unexecuted instantiation: <serde_dhall::serialize::StructSerializer as serde_core::ser::SerializeStruct>::serialize_field::<alloc::string::String> Unexecuted instantiation: <serde_dhall::serialize::StructSerializer as serde_core::ser::SerializeStruct>::serialize_field::<anise::frames::frameuid::FrameUid> Unexecuted instantiation: <serde_dhall::serialize::StructSerializer as serde_core::ser::SerializeStruct>::serialize_field::<anise::structure::location::Location> Unexecuted instantiation: <serde_dhall::serialize::StructSerializer as serde_core::ser::SerializeStruct>::serialize_field::<bool> Unexecuted instantiation: <serde_dhall::serialize::StructSerializer as serde_core::ser::SerializeStruct>::serialize_field::<f64> Unexecuted instantiation: <serde_dhall::serialize::StructSerializer as serde_core::ser::SerializeStruct>::serialize_field::<i32> Unexecuted instantiation: <serde_dhall::serialize::StructSerializer as serde_core::ser::SerializeStruct>::serialize_field::<_>
336
337	0	fn end(self) -> Result<Self::Ok> {
338	0	Ok(Record(self.0))
339	0	}
340		}
341
342		struct StructVariantSerializer {
343		variant: &'static str,
344		value: BTreeMap<String, SimpleValue>,
345		}
346
347		impl ser::SerializeStructVariant for StructVariantSerializer {
348		type Ok = SimpleValue;
349		type Error = Error;
350
351	0	fn serialize_field<T>(&mut self, key: &'static str, val: &T) -> Result<()>
352	0	where
353	0	T: ?Sized + ser::Serialize,
354		{
355	0	let val: SimpleValue = val.serialize(Serializer)?;
356	0	self.value.insert(key.into(), val);
357	0	Ok(())
358	0	}
359
360	0	fn end(self) -> Result<Self::Ok> {
361	0	Ok(SimpleValue::Union(
362	0	self.variant.to_string(),
363	0	Some(Box::new(Record(self.value))),
364	0	))
365	0	}
366		}
367
368		impl serde::ser::Serialize for SimpleValue {
369	0	fn serialize<S>(
370	0	&self,
371	0	serializer: S,
372	0	) -> std::result::Result<S::Ok, S::Error>
373	0	where
374	0	S: serde::ser::Serializer,
375		{
376		use serde::ser::{SerializeMap, SerializeSeq};
377		use NumKind::*;
378		use SimpleValue::*;
379
380	0	match self {
381	0	Num(Bool(x)) => serializer.serialize_bool(*x),
382	0	Num(Natural(x)) => serializer.serialize_u64(*x),
383	0	Num(Integer(x)) => serializer.serialize_i64(*x),
384	0	Num(Double(x)) => serializer.serialize_f64((*x).into()),
385	0	Text(x) => serializer.serialize_str(x),
386	0	List(xs) => {
387	0	let mut seq = serializer.serialize_seq(Some(xs.len()))?;
388	0	for x in xs {
389	0	seq.serialize_element(x)?;
390		}
391	0	seq.end()
392		}
393	0	Optional(None) => serializer.serialize_none(),
394	0	Optional(Some(x)) => serializer.serialize_some(x),
395	0	Record(m) => {
396	0	let mut map = serializer.serialize_map(Some(m.len()))?;
397	0	for (k, v) in m {
398	0	map.serialize_entry(k, v)?;
399		}
400	0	map.end()
401		}
402		// serde's enum support is yet again really limited. We can't avoid a memleak here :(.
403	0	Union(field_name, None) => {
404	0	let field_name: Box<str> = field_name.clone().into();
405	0	serializer.serialize_unit_variant(
406		"SimpleValue",
407		0,
408	0	Box::leak(field_name),
409		)
410		}
411	0	Union(field_name, Some(x)) => {
412	0	let field_name: Box<str> = field_name.clone().into();
413	0	serializer.serialize_newtype_variant(
414		"SimpleValue",
415		0,
416	0	Box::leak(field_name),
417	0	x,
418		)
419		}
420		}
421	0	}
422		}