serde_binary/
serializer.rs

1//! Write a `Serialize` implementation to a binary writer.
2use super::{Error, Result};
3use crate::BinaryWriter;
4use serde::ser::{self, Serialize};
5
6#[doc(hidden)]
7pub struct SerializeArray<'a, 'b> {
8    ser: &'a mut Serializer<'b>,
9}
10
11impl<'a, 'b> ser::SerializeSeq for SerializeArray<'a, 'b> {
12    type Ok = usize;
13    type Error = Error;
14
15    fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<()>
16    where
17        T: Serialize,
18    {
19        value.serialize(&mut *self.ser)?;
20        Ok(())
21    }
22
23    fn end(self) -> Result<Self::Ok> {
24        Ok(0)
25    }
26}
27
28impl<'a, 'b> ser::SerializeTuple for SerializeArray<'a, 'b> {
29    type Ok = usize;
30    type Error = Error;
31
32    fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<()>
33    where
34        T: Serialize,
35    {
36        ser::SerializeSeq::serialize_element(self, value)
37    }
38
39    fn end(self) -> Result<Self::Ok> {
40        ser::SerializeSeq::end(self)
41    }
42}
43
44impl<'a, 'b> ser::SerializeTupleStruct for SerializeArray<'a, 'b> {
45    type Ok = usize;
46    type Error = Error;
47
48    fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<()>
49    where
50        T: Serialize,
51    {
52        ser::SerializeSeq::serialize_element(self, value)
53    }
54
55    fn end(self) -> Result<Self::Ok> {
56        ser::SerializeSeq::end(self)
57    }
58}
59
60#[doc(hidden)]
61pub struct SerializeObject<'a, 'b> {
62    ser: &'a mut Serializer<'b>,
63}
64
65impl<'a, 'b> ser::SerializeStruct for SerializeObject<'a, 'b> {
66    type Ok = usize;
67    type Error = Error;
68    fn serialize_field<T: ?Sized>(&mut self, key: &'static str, value: &T) -> Result<()>
69    where
70        T: Serialize,
71    {
72        self.ser.writer.write_string(key)?;
73        value.serialize(&mut *self.ser)?;
74        Ok(())
75    }
76
77    fn end(self) -> Result<Self::Ok> {
78        Ok(0)
79    }
80
81    fn skip_field(&mut self, _key: &'static str) -> Result<()> {
82        Ok(())
83    }
84}
85
86impl<'a, 'b> ser::SerializeMap for SerializeObject<'a, 'b> {
87    type Ok = usize;
88    type Error = Error;
89
90    fn serialize_key<T>(&mut self, key: &T) -> Result<()>
91    where
92        T: ?Sized + Serialize,
93    {
94        key.serialize(&mut *self.ser)?;
95        Ok(())
96    }
97
98    fn serialize_value<T: ?Sized>(&mut self, value: &T) -> Result<()>
99    where
100        T: Serialize,
101    {
102        value.serialize(&mut *self.ser)?;
103        Ok(())
104    }
105
106    fn end(self) -> Result<Self::Ok> {
107        Ok(0)
108    }
109
110    fn serialize_entry<K: ?Sized, V: ?Sized>(&mut self, key: &K, value: &V) -> Result<()>
111    where
112        K: Serialize,
113        V: Serialize,
114    {
115        self.serialize_key(key)?;
116        self.serialize_value(value)?;
117        Ok(())
118    }
119}
120
121impl<'a, 'b> ser::SerializeTupleVariant for SerializeArray<'a, 'b> {
122    type Ok = usize;
123    type Error = Error;
124
125    fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<()>
126    where
127        T: Serialize,
128    {
129        value.serialize(&mut *self.ser)?;
130        Ok(())
131    }
132
133    fn end(self) -> Result<Self::Ok> {
134        Ok(0)
135    }
136}
137
138impl<'a, 'b> ser::SerializeStructVariant for SerializeObject<'a, 'b> {
139    type Ok = usize;
140    type Error = Error;
141
142    fn serialize_field<T: ?Sized>(&mut self, key: &'static str, value: &T) -> Result<()>
143    where
144        T: Serialize,
145    {
146        self.ser.writer.write_string(key)?;
147        value.serialize(&mut *self.ser)?;
148        Ok(())
149    }
150
151    fn end(self) -> Result<Self::Ok> {
152        Ok(0)
153    }
154
155    fn skip_field(&mut self, _key: &'static str) -> Result<()> {
156        Ok(())
157    }
158}
159
160/// Serializer for binary data.
161pub struct Serializer<'a> {
162    /// The binary writer to write to.
163    pub writer: BinaryWriter<'a>,
164}
165
166impl<'a, 'b> ser::Serializer for &'a mut Serializer<'b> {
167    type Ok = usize;
168    type Error = Error;
169
170    type SerializeSeq = SerializeArray<'a, 'b>;
171    type SerializeTuple = SerializeArray<'a, 'b>;
172    type SerializeTupleStruct = SerializeArray<'a, 'b>;
173    type SerializeTupleVariant = SerializeArray<'a, 'b>;
174    type SerializeMap = SerializeObject<'a, 'b>;
175    type SerializeStruct = SerializeObject<'a, 'b>;
176    type SerializeStructVariant = SerializeObject<'a, 'b>;
177
178    fn serialize_bool(self, v: bool) -> Result<Self::Ok> {
179        Ok(self.writer.write_bool(v)?)
180    }
181
182    fn serialize_i8(self, v: i8) -> Result<Self::Ok> {
183        Ok(self.writer.write_i8(v)?)
184    }
185
186    fn serialize_i16(self, v: i16) -> Result<Self::Ok> {
187        Ok(self.writer.write_i16(v)?)
188    }
189
190    fn serialize_i32(self, v: i32) -> Result<Self::Ok> {
191        Ok(self.writer.write_i32(v)?)
192    }
193
194    fn serialize_i64(self, v: i64) -> Result<Self::Ok> {
195        Ok(self.writer.write_i64(v)?)
196    }
197
198    fn serialize_u8(self, v: u8) -> Result<Self::Ok> {
199        Ok(self.writer.write_u8(v)?)
200    }
201
202    fn serialize_u16(self, v: u16) -> Result<Self::Ok> {
203        Ok(self.writer.write_u16(v)?)
204    }
205
206    fn serialize_u32(self, v: u32) -> Result<Self::Ok> {
207        Ok(self.writer.write_u32(v)?)
208    }
209
210    fn serialize_u64(self, v: u64) -> Result<Self::Ok> {
211        Ok(self.writer.write_u64(v)?)
212    }
213
214    fn serialize_f32(self, v: f32) -> Result<Self::Ok> {
215        Ok(self.writer.write_f32(v)?)
216    }
217
218    fn serialize_f64(self, v: f64) -> Result<Self::Ok> {
219        Ok(self.writer.write_f64(v)?)
220    }
221
222    fn serialize_char(self, v: char) -> Result<Self::Ok> {
223        Ok(self.writer.write_char(v)?)
224    }
225
226    fn serialize_str(self, v: &str) -> Result<Self::Ok> {
227        Ok(self.writer.write_string(v)?)
228    }
229
230    fn serialize_bytes(self, v: &[u8]) -> Result<Self::Ok> {
231        Ok(self.writer.write_bytes(v)?)
232    }
233
234    fn serialize_none(self) -> Result<Self::Ok> {
235        Ok(self.writer.write_u8(0)?)
236    }
237
238    fn serialize_some<T>(self, value: &T) -> Result<Self::Ok>
239    where
240        T: ?Sized + Serialize,
241    {
242        self.writer.write_u8(1)?;
243        value.serialize(self)
244    }
245
246    fn serialize_unit(self) -> Result<Self::Ok> {
247        Ok(self.writer.write_u8(0)?)
248    }
249
250    fn serialize_unit_struct(self, _name: &'static str) -> Result<Self::Ok> {
251        self.serialize_unit()
252    }
253
254    fn serialize_unit_variant(
255        self,
256        _name: &'static str,
257        _variant_index: u32,
258        variant: &'static str,
259    ) -> Result<Self::Ok> {
260        self.writer.write_string(variant)?;
261        self.serialize_unit()
262    }
263
264    fn serialize_newtype_struct<T>(self, _name: &'static str, value: &T) -> Result<Self::Ok>
265    where
266        T: ?Sized + Serialize,
267    {
268        value.serialize(self)
269    }
270
271    fn serialize_newtype_variant<T>(
272        self,
273        _name: &'static str,
274        _variant_index: u32,
275        variant: &'static str,
276        value: &T,
277    ) -> Result<Self::Ok>
278    where
279        T: ?Sized + Serialize,
280    {
281        self.writer.write_string(variant)?;
282        value.serialize(self)
283    }
284
285    fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq> {
286        if let Some(len) = len {
287            if len > u32::MAX as usize {
288                return Err(Error::TooManyItems);
289            }
290        }
291        self.writer.write_u32(len.map(|l| l as u32).unwrap_or(0))?;
292        Ok(SerializeArray { ser: self })
293    }
294
295    fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple> {
296        self.serialize_seq(Some(len))
297    }
298
299    fn serialize_tuple_struct(
300        self,
301        name: &'static str,
302        len: usize,
303    ) -> Result<Self::SerializeTupleStruct> {
304        //println!("Serialize a tuple struct!");
305        self.writer.write_string(name)?;
306        self.serialize_seq(Some(len))
307    }
308
309    fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap> {
310        if let Some(len) = len {
311            if len > u32::MAX as usize {
312                return Err(Error::TooManyItems);
313            }
314        }
315        self.writer.write_u32(len.map(|l| l as u32).unwrap_or(0))?;
316        Ok(SerializeObject { ser: self })
317    }
318
319    fn serialize_struct(self, _name: &'static str, len: usize) -> Result<Self::SerializeStruct> {
320        self.serialize_map(Some(len))
321    }
322
323    fn serialize_tuple_variant(
324        self,
325        _name: &'static str,
326        _variant_index: u32,
327        variant: &'static str,
328        len: usize,
329    ) -> Result<Self::SerializeTupleVariant> {
330        self.writer.write_string(variant)?;
331        self.serialize_seq(Some(len))
332    }
333
334    fn serialize_struct_variant(
335        self,
336        _name: &'static str,
337        _variant_index: u32,
338        variant: &'static str,
339        len: usize,
340    ) -> Result<Self::SerializeStructVariant> {
341        self.writer.write_string(variant)?;
342        self.serialize_struct(variant, len)
343    }
344}
serde_binary/serializer.rs

serde_binary/
serializer.rs
