Coverage Report

Created: 2025-07-18 06:13

/src/json/src/number.rs
Line
Count
Source (jump to first uncovered line)
1
use crate::de::ParserNumber;
2
use crate::error::Error;
3
#[cfg(feature = "arbitrary_precision")]
4
use crate::error::ErrorCode;
5
#[cfg(feature = "arbitrary_precision")]
6
use alloc::borrow::ToOwned;
7
#[cfg(feature = "arbitrary_precision")]
8
use alloc::string::{String, ToString};
9
use core::fmt::{self, Debug, Display};
10
#[cfg(not(feature = "arbitrary_precision"))]
11
use core::hash::{Hash, Hasher};
12
use serde::de::{self, Unexpected, Visitor};
13
#[cfg(feature = "arbitrary_precision")]
14
use serde::de::{IntoDeserializer, MapAccess};
15
use serde::{forward_to_deserialize_any, Deserialize, Deserializer, Serialize, Serializer};
16
17
#[cfg(feature = "arbitrary_precision")]
18
pub(crate) const TOKEN: &str = "$serde_json::private::Number";
19
20
/// Represents a JSON number, whether integer or floating point.
21
#[derive(Clone, PartialEq, Eq, Hash)]
22
pub struct Number {
23
    n: N,
24
}
25
26
#[cfg(not(feature = "arbitrary_precision"))]
27
#[derive(Copy, Clone)]
28
enum N {
29
    PosInt(u64),
30
    /// Always less than zero.
31
    NegInt(i64),
32
    /// Always finite.
33
    Float(f64),
34
}
35
36
#[cfg(not(feature = "arbitrary_precision"))]
37
impl PartialEq for N {
38
0
    fn eq(&self, other: &Self) -> bool {
39
0
        match (self, other) {
40
0
            (N::PosInt(a), N::PosInt(b)) => a == b,
41
0
            (N::NegInt(a), N::NegInt(b)) => a == b,
42
0
            (N::Float(a), N::Float(b)) => a == b,
43
0
            _ => false,
44
        }
45
0
    }
46
}
47
48
// Implementing Eq is fine since any float values are always finite.
49
#[cfg(not(feature = "arbitrary_precision"))]
50
impl Eq for N {}
51
52
#[cfg(not(feature = "arbitrary_precision"))]
53
impl Hash for N {
54
0
    fn hash<H: Hasher>(&self, h: &mut H) {
55
0
        match *self {
56
0
            N::PosInt(i) => i.hash(h),
57
0
            N::NegInt(i) => i.hash(h),
58
0
            N::Float(f) => {
59
0
                if f == 0.0f64 {
60
0
                    // There are 2 zero representations, +0 and -0, which
61
0
                    // compare equal but have different bits. We use the +0 hash
62
0
                    // for both so that hash(+0) == hash(-0).
63
0
                    0.0f64.to_bits().hash(h);
64
0
                } else {
65
0
                    f.to_bits().hash(h);
66
0
                }
67
            }
68
        }
69
0
    }
70
}
71
72
#[cfg(feature = "arbitrary_precision")]
73
type N = String;
74
75
impl Number {
76
    /// Returns true if the `Number` is an integer between `i64::MIN` and
77
    /// `i64::MAX`.
78
    ///
79
    /// For any Number on which `is_i64` returns true, `as_i64` is guaranteed to
80
    /// return the integer value.
81
0
    pub fn is_i64(&self) -> bool {
82
0
        #[cfg(not(feature = "arbitrary_precision"))]
83
0
        match self.n {
84
0
            N::PosInt(v) => v <= i64::MAX as u64,
85
0
            N::NegInt(_) => true,
86
0
            N::Float(_) => false,
87
        }
88
        #[cfg(feature = "arbitrary_precision")]
89
        self.as_i64().is_some()
90
0
    }
91
92
    /// Returns true if the `Number` is an integer between zero and `u64::MAX`.
93
    ///
94
    /// For any Number on which `is_u64` returns true, `as_u64` is guaranteed to
95
    /// return the integer value.
96
0
    pub fn is_u64(&self) -> bool {
97
0
        #[cfg(not(feature = "arbitrary_precision"))]
98
0
        match self.n {
99
0
            N::PosInt(_) => true,
100
0
            N::NegInt(_) | N::Float(_) => false,
101
        }
102
        #[cfg(feature = "arbitrary_precision")]
103
        self.as_u64().is_some()
104
0
    }
105
106
    /// Returns true if the `Number` can be represented by f64.
107
    ///
108
    /// For any Number on which `is_f64` returns true, `as_f64` is guaranteed to
109
    /// return the floating point value.
110
    ///
111
    /// Currently this function returns true if and only if both `is_i64` and
112
    /// `is_u64` return false but this is not a guarantee in the future.
113
0
    pub fn is_f64(&self) -> bool {
114
0
        #[cfg(not(feature = "arbitrary_precision"))]
115
0
        match self.n {
116
0
            N::Float(_) => true,
117
0
            N::PosInt(_) | N::NegInt(_) => false,
118
        }
119
        #[cfg(feature = "arbitrary_precision")]
120
        {
121
            for c in self.n.chars() {
122
                if c == '.' || c == 'e' || c == 'E' {
123
                    return self.n.parse::<f64>().ok().map_or(false, f64::is_finite);
124
                }
125
            }
126
            false
127
        }
128
0
    }
129
130
    /// If the `Number` is an integer, represent it as i64 if possible. Returns
131
    /// None otherwise.
132
0
    pub fn as_i64(&self) -> Option<i64> {
133
0
        #[cfg(not(feature = "arbitrary_precision"))]
134
0
        match self.n {
135
0
            N::PosInt(n) => {
136
0
                if n <= i64::MAX as u64 {
137
0
                    Some(n as i64)
138
                } else {
139
0
                    None
140
                }
141
            }
142
0
            N::NegInt(n) => Some(n),
143
0
            N::Float(_) => None,
144
        }
145
        #[cfg(feature = "arbitrary_precision")]
146
        self.n.parse().ok()
147
0
    }
148
149
    /// If the `Number` is an integer, represent it as u64 if possible. Returns
150
    /// None otherwise.
151
0
    pub fn as_u64(&self) -> Option<u64> {
152
0
        #[cfg(not(feature = "arbitrary_precision"))]
153
0
        match self.n {
154
0
            N::PosInt(n) => Some(n),
155
0
            N::NegInt(_) | N::Float(_) => None,
156
        }
157
        #[cfg(feature = "arbitrary_precision")]
158
        self.n.parse().ok()
159
0
    }
160
161
    /// Represents the number as f64 if possible. Returns None otherwise.
162
0
    pub fn as_f64(&self) -> Option<f64> {
163
0
        #[cfg(not(feature = "arbitrary_precision"))]
164
0
        match self.n {
165
0
            N::PosInt(n) => Some(n as f64),
166
0
            N::NegInt(n) => Some(n as f64),
167
0
            N::Float(n) => Some(n),
168
        }
169
        #[cfg(feature = "arbitrary_precision")]
170
        self.n.parse::<f64>().ok().filter(|float| float.is_finite())
171
0
    }
172
173
    /// Converts a finite `f64` to a `Number`. Infinite or NaN values are not JSON
174
    /// numbers.
175
    ///
176
    /// ```
177
    /// # use serde_json::Number;
178
    /// #
179
    /// assert!(Number::from_f64(256.0).is_some());
180
    ///
181
    /// assert!(Number::from_f64(f64::NAN).is_none());
182
    /// ```
183
241k
    pub fn from_f64(f: f64) -> Option<Number> {
184
241k
        if f.is_finite() {
185
241k
            let n = {
186
241k
                #[cfg(not(feature = "arbitrary_precision"))]
187
241k
                {
188
241k
                    N::Float(f)
189
241k
                }
190
241k
                #[cfg(feature = "arbitrary_precision")]
191
241k
                {
192
241k
                    ryu::Buffer::new().format_finite(f).to_owned()
193
241k
                }
194
241k
            };
195
241k
            Some(Number { n })
196
        } else {
197
0
            None
198
        }
199
241k
    }
200
201
    /// If the `Number` is an integer, represent it as i128 if possible. Returns
202
    /// None otherwise.
203
0
    pub fn as_i128(&self) -> Option<i128> {
204
0
        #[cfg(not(feature = "arbitrary_precision"))]
205
0
        match self.n {
206
0
            N::PosInt(n) => Some(n as i128),
207
0
            N::NegInt(n) => Some(n as i128),
208
0
            N::Float(_) => None,
209
        }
210
        #[cfg(feature = "arbitrary_precision")]
211
        self.n.parse().ok()
212
0
    }
213
214
    /// If the `Number` is an integer, represent it as u128 if possible. Returns
215
    /// None otherwise.
216
0
    pub fn as_u128(&self) -> Option<u128> {
217
0
        #[cfg(not(feature = "arbitrary_precision"))]
218
0
        match self.n {
219
0
            N::PosInt(n) => Some(n as u128),
220
0
            N::NegInt(_) | N::Float(_) => None,
221
        }
222
        #[cfg(feature = "arbitrary_precision")]
223
        self.n.parse().ok()
224
0
    }
225
226
    /// Converts an `i128` to a `Number`. Numbers smaller than i64::MIN or
227
    /// larger than u64::MAX can only be represented in `Number` if serde_json's
228
    /// "arbitrary_precision" feature is enabled.
229
    ///
230
    /// ```
231
    /// # use serde_json::Number;
232
    /// #
233
    /// assert!(Number::from_i128(256).is_some());
234
    /// ```
235
0
    pub fn from_i128(i: i128) -> Option<Number> {
236
0
        let n = {
237
            #[cfg(not(feature = "arbitrary_precision"))]
238
            {
239
0
                if let Ok(u) = u64::try_from(i) {
240
0
                    N::PosInt(u)
241
0
                } else if let Ok(i) = i64::try_from(i) {
242
0
                    N::NegInt(i)
243
                } else {
244
0
                    return None;
245
                }
246
            }
247
            #[cfg(feature = "arbitrary_precision")]
248
            {
249
                i.to_string()
250
            }
251
        };
252
0
        Some(Number { n })
253
0
    }
254
255
    /// Converts a `u128` to a `Number`. Numbers greater than u64::MAX can only
256
    /// be represented in `Number` if serde_json's "arbitrary_precision" feature
257
    /// is enabled.
258
    ///
259
    /// ```
260
    /// # use serde_json::Number;
261
    /// #
262
    /// assert!(Number::from_u128(256).is_some());
263
    /// ```
264
0
    pub fn from_u128(i: u128) -> Option<Number> {
265
0
        let n = {
266
0
            #[cfg(not(feature = "arbitrary_precision"))]
267
0
            {
268
0
                if let Ok(u) = u64::try_from(i) {
269
0
                    N::PosInt(u)
270
                } else {
271
0
                    return None;
272
                }
273
            }
274
            #[cfg(feature = "arbitrary_precision")]
275
            {
276
                i.to_string()
277
            }
278
        };
279
0
        Some(Number { n })
280
0
    }
281
282
    /// Returns the exact original JSON representation that this Number was
283
    /// parsed from.
284
    ///
285
    /// For numbers constructed not via parsing, such as by `From<i32>`, returns
286
    /// the JSON representation that serde\_json would serialize for this
287
    /// number.
288
    ///
289
    /// ```
290
    /// # use serde_json::Number;
291
    /// for value in [
292
    ///     "7",
293
    ///     "12.34",
294
    ///     "34e-56789",
295
    ///     "0.0123456789000000012345678900000001234567890000123456789",
296
    ///     "343412345678910111213141516171819202122232425262728293034",
297
    ///     "-343412345678910111213141516171819202122232425262728293031",
298
    /// ] {
299
    ///     let number: Number = serde_json::from_str(value).unwrap();
300
    ///     assert_eq!(number.as_str(), value);
301
    /// }
302
    /// ```
303
    #[cfg(feature = "arbitrary_precision")]
304
    #[cfg_attr(docsrs, doc(cfg(feature = "arbitrary_precision")))]
305
    pub fn as_str(&self) -> &str {
306
        &self.n
307
    }
308
309
0
    pub(crate) fn as_f32(&self) -> Option<f32> {
310
0
        #[cfg(not(feature = "arbitrary_precision"))]
311
0
        match self.n {
312
0
            N::PosInt(n) => Some(n as f32),
313
0
            N::NegInt(n) => Some(n as f32),
314
0
            N::Float(n) => Some(n as f32),
315
        }
316
        #[cfg(feature = "arbitrary_precision")]
317
        self.n.parse::<f32>().ok().filter(|float| float.is_finite())
318
0
    }
319
320
0
    pub(crate) fn from_f32(f: f32) -> Option<Number> {
321
0
        if f.is_finite() {
322
0
            let n = {
323
0
                #[cfg(not(feature = "arbitrary_precision"))]
324
0
                {
325
0
                    N::Float(f as f64)
326
0
                }
327
0
                #[cfg(feature = "arbitrary_precision")]
328
0
                {
329
0
                    ryu::Buffer::new().format_finite(f).to_owned()
330
0
                }
331
0
            };
332
0
            Some(Number { n })
333
        } else {
334
0
            None
335
        }
336
0
    }
337
338
    #[cfg(feature = "arbitrary_precision")]
339
    /// Not public API. Only tests use this.
340
    #[doc(hidden)]
341
    #[inline]
342
    pub fn from_string_unchecked(n: String) -> Self {
343
        Number { n }
344
    }
345
}
346
347
impl Display for Number {
348
    #[cfg(not(feature = "arbitrary_precision"))]
349
0
    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
350
0
        match self.n {
351
0
            N::PosInt(u) => formatter.write_str(itoa::Buffer::new().format(u)),
352
0
            N::NegInt(i) => formatter.write_str(itoa::Buffer::new().format(i)),
353
0
            N::Float(f) => formatter.write_str(ryu::Buffer::new().format_finite(f)),
354
        }
355
0
    }
356
357
    #[cfg(feature = "arbitrary_precision")]
358
    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
359
        Display::fmt(&self.n, formatter)
360
    }
361
}
362
363
impl Debug for Number {
364
0
    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
365
0
        write!(formatter, "Number({})", self)
366
0
    }
367
}
368
369
impl Serialize for Number {
370
    #[cfg(not(feature = "arbitrary_precision"))]
371
0
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
372
0
    where
373
0
        S: Serializer,
374
0
    {
375
0
        match self.n {
376
0
            N::PosInt(u) => serializer.serialize_u64(u),
377
0
            N::NegInt(i) => serializer.serialize_i64(i),
378
0
            N::Float(f) => serializer.serialize_f64(f),
379
        }
380
0
    }
Unexecuted instantiation: <serde_json::number::Number as serde::ser::Serialize>::serialize::<&mut serde_json::ser::Serializer<&mut <serde_json::value::Value as core::fmt::Display>::fmt::WriterFormatter>>
Unexecuted instantiation: <serde_json::number::Number as serde::ser::Serialize>::serialize::<&mut serde_json::ser::Serializer<&mut <serde_json::value::Value as core::fmt::Display>::fmt::WriterFormatter, serde_json::ser::PrettyFormatter>>
381
382
    #[cfg(feature = "arbitrary_precision")]
383
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
384
    where
385
        S: Serializer,
386
    {
387
        use serde::ser::SerializeStruct;
388
389
        let mut s = tri!(serializer.serialize_struct(TOKEN, 1));
390
        tri!(s.serialize_field(TOKEN, &self.n));
391
        s.end()
392
    }
393
}
394
395
impl<'de> Deserialize<'de> for Number {
396
    #[inline]
397
0
    fn deserialize<D>(deserializer: D) -> Result<Number, D::Error>
398
0
    where
399
0
        D: Deserializer<'de>,
400
0
    {
401
        struct NumberVisitor;
402
403
        impl<'de> Visitor<'de> for NumberVisitor {
404
            type Value = Number;
405
406
0
            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
407
0
                formatter.write_str("a JSON number")
408
0
            }
409
410
0
            fn visit_i64<E>(self, value: i64) -> Result<Number, E> {
411
0
                Ok(value.into())
412
0
            }
413
414
0
            fn visit_i128<E>(self, value: i128) -> Result<Number, E>
415
0
            where
416
0
                E: de::Error,
417
0
            {
418
0
                Number::from_i128(value)
419
0
                    .ok_or_else(|| de::Error::custom("JSON number out of range"))
420
0
            }
421
422
0
            fn visit_u64<E>(self, value: u64) -> Result<Number, E> {
423
0
                Ok(value.into())
424
0
            }
425
426
0
            fn visit_u128<E>(self, value: u128) -> Result<Number, E>
427
0
            where
428
0
                E: de::Error,
429
0
            {
430
0
                Number::from_u128(value)
431
0
                    .ok_or_else(|| de::Error::custom("JSON number out of range"))
432
0
            }
433
434
0
            fn visit_f64<E>(self, value: f64) -> Result<Number, E>
435
0
            where
436
0
                E: de::Error,
437
0
            {
438
0
                Number::from_f64(value).ok_or_else(|| de::Error::custom("not a JSON number"))
439
0
            }
440
441
            #[cfg(feature = "arbitrary_precision")]
442
            fn visit_map<V>(self, mut visitor: V) -> Result<Number, V::Error>
443
            where
444
                V: de::MapAccess<'de>,
445
            {
446
                let value = tri!(visitor.next_key::<NumberKey>());
447
                if value.is_none() {
448
                    return Err(de::Error::invalid_type(Unexpected::Map, &self));
449
                }
450
                let v: NumberFromString = tri!(visitor.next_value());
451
                Ok(v.value)
452
            }
453
        }
454
455
0
        deserializer.deserialize_any(NumberVisitor)
456
0
    }
457
}
458
459
#[cfg(feature = "arbitrary_precision")]
460
struct NumberKey;
461
462
#[cfg(feature = "arbitrary_precision")]
463
impl<'de> de::Deserialize<'de> for NumberKey {
464
    fn deserialize<D>(deserializer: D) -> Result<NumberKey, D::Error>
465
    where
466
        D: de::Deserializer<'de>,
467
    {
468
        struct FieldVisitor;
469
470
        impl<'de> de::Visitor<'de> for FieldVisitor {
471
            type Value = ();
472
473
            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
474
                formatter.write_str("a valid number field")
475
            }
476
477
            fn visit_str<E>(self, s: &str) -> Result<(), E>
478
            where
479
                E: de::Error,
480
            {
481
                if s == TOKEN {
482
                    Ok(())
483
                } else {
484
                    Err(de::Error::custom("expected field with custom name"))
485
                }
486
            }
487
        }
488
489
        tri!(deserializer.deserialize_identifier(FieldVisitor));
490
        Ok(NumberKey)
491
    }
492
}
493
494
#[cfg(feature = "arbitrary_precision")]
495
pub struct NumberFromString {
496
    pub value: Number,
497
}
498
499
#[cfg(feature = "arbitrary_precision")]
500
impl<'de> de::Deserialize<'de> for NumberFromString {
501
    fn deserialize<D>(deserializer: D) -> Result<NumberFromString, D::Error>
502
    where
503
        D: de::Deserializer<'de>,
504
    {
505
        struct Visitor;
506
507
        impl<'de> de::Visitor<'de> for Visitor {
508
            type Value = NumberFromString;
509
510
            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
511
                formatter.write_str("string containing a number")
512
            }
513
514
            fn visit_str<E>(self, s: &str) -> Result<NumberFromString, E>
515
            where
516
                E: de::Error,
517
            {
518
                let n = tri!(s.parse().map_err(de::Error::custom));
519
                Ok(NumberFromString { value: n })
520
            }
521
        }
522
523
        deserializer.deserialize_str(Visitor)
524
    }
525
}
526
527
#[cfg(feature = "arbitrary_precision")]
528
fn invalid_number() -> Error {
529
    Error::syntax(ErrorCode::InvalidNumber, 0, 0)
530
}
531
532
macro_rules! deserialize_any {
533
    (@expand [$($num_string:tt)*]) => {
534
        #[cfg(not(feature = "arbitrary_precision"))]
535
0
        fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Error>
536
0
        where
537
0
            V: Visitor<'de>,
538
0
        {
539
0
            match self.n {
540
0
                N::PosInt(u) => visitor.visit_u64(u),
541
0
                N::NegInt(i) => visitor.visit_i64(i),
542
0
                N::Float(f) => visitor.visit_f64(f),
543
            }
544
0
        }
Unexecuted instantiation: <serde_json::number::Number as serde::de::Deserializer>::deserialize_any::<_>
Unexecuted instantiation: <&serde_json::number::Number as serde::de::Deserializer>::deserialize_any::<_>
545
546
        #[cfg(feature = "arbitrary_precision")]
547
        fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Error>
548
            where V: Visitor<'de>
549
        {
550
            if let Some(u) = self.as_u64() {
551
                return visitor.visit_u64(u);
552
            } else if let Some(i) = self.as_i64() {
553
                return visitor.visit_i64(i);
554
            } else if let Some(u) = self.as_u128() {
555
                return visitor.visit_u128(u);
556
            } else if let Some(i) = self.as_i128() {
557
                return visitor.visit_i128(i);
558
            } else if let Some(f) = self.as_f64() {
559
                if ryu::Buffer::new().format_finite(f) == self.n || f.to_string() == self.n {
560
                    return visitor.visit_f64(f);
561
                }
562
            }
563
564
            visitor.visit_map(NumberDeserializer {
565
                number: Some(self.$($num_string)*),
566
            })
567
        }
568
    };
569
570
    (owned) => {
571
        deserialize_any!(@expand [n]);
572
    };
573
574
    (ref) => {
575
        deserialize_any!(@expand [n.clone()]);
576
    };
577
}
578
579
macro_rules! deserialize_number {
580
    ($deserialize:ident => $visit:ident) => {
581
        #[cfg(not(feature = "arbitrary_precision"))]
582
0
        fn $deserialize<V>(self, visitor: V) -> Result<V::Value, Error>
583
0
        where
584
0
            V: Visitor<'de>,
585
0
        {
586
0
            self.deserialize_any(visitor)
587
0
        }
Unexecuted instantiation: <serde_json::number::Number as serde::de::Deserializer>::deserialize_i8::<_>
Unexecuted instantiation: <serde_json::number::Number as serde::de::Deserializer>::deserialize_i16::<_>
Unexecuted instantiation: <serde_json::number::Number as serde::de::Deserializer>::deserialize_i32::<_>
Unexecuted instantiation: <serde_json::number::Number as serde::de::Deserializer>::deserialize_i64::<_>
Unexecuted instantiation: <serde_json::number::Number as serde::de::Deserializer>::deserialize_i128::<_>
Unexecuted instantiation: <serde_json::number::Number as serde::de::Deserializer>::deserialize_u8::<_>
Unexecuted instantiation: <serde_json::number::Number as serde::de::Deserializer>::deserialize_u16::<_>
Unexecuted instantiation: <serde_json::number::Number as serde::de::Deserializer>::deserialize_u32::<_>
Unexecuted instantiation: <serde_json::number::Number as serde::de::Deserializer>::deserialize_u64::<_>
Unexecuted instantiation: <serde_json::number::Number as serde::de::Deserializer>::deserialize_u128::<_>
Unexecuted instantiation: <serde_json::number::Number as serde::de::Deserializer>::deserialize_f32::<_>
Unexecuted instantiation: <serde_json::number::Number as serde::de::Deserializer>::deserialize_f64::<_>
Unexecuted instantiation: <&serde_json::number::Number as serde::de::Deserializer>::deserialize_i8::<_>
Unexecuted instantiation: <&serde_json::number::Number as serde::de::Deserializer>::deserialize_i16::<_>
Unexecuted instantiation: <&serde_json::number::Number as serde::de::Deserializer>::deserialize_i32::<_>
Unexecuted instantiation: <&serde_json::number::Number as serde::de::Deserializer>::deserialize_i64::<_>
Unexecuted instantiation: <&serde_json::number::Number as serde::de::Deserializer>::deserialize_i128::<_>
Unexecuted instantiation: <&serde_json::number::Number as serde::de::Deserializer>::deserialize_u8::<_>
Unexecuted instantiation: <&serde_json::number::Number as serde::de::Deserializer>::deserialize_u16::<_>
Unexecuted instantiation: <&serde_json::number::Number as serde::de::Deserializer>::deserialize_u32::<_>
Unexecuted instantiation: <&serde_json::number::Number as serde::de::Deserializer>::deserialize_u64::<_>
Unexecuted instantiation: <&serde_json::number::Number as serde::de::Deserializer>::deserialize_u128::<_>
Unexecuted instantiation: <&serde_json::number::Number as serde::de::Deserializer>::deserialize_f32::<_>
Unexecuted instantiation: <&serde_json::number::Number as serde::de::Deserializer>::deserialize_f64::<_>
588
589
        #[cfg(feature = "arbitrary_precision")]
590
        fn $deserialize<V>(self, visitor: V) -> Result<V::Value, Error>
591
        where
592
            V: de::Visitor<'de>,
593
        {
594
            visitor.$visit(tri!(self.n.parse().map_err(|_| invalid_number())))
595
        }
596
    };
597
}
598
599
impl<'de> Deserializer<'de> for Number {
600
    type Error = Error;
601
602
    deserialize_any!(owned);
603
604
    deserialize_number!(deserialize_i8 => visit_i8);
605
    deserialize_number!(deserialize_i16 => visit_i16);
606
    deserialize_number!(deserialize_i32 => visit_i32);
607
    deserialize_number!(deserialize_i64 => visit_i64);
608
    deserialize_number!(deserialize_i128 => visit_i128);
609
    deserialize_number!(deserialize_u8 => visit_u8);
610
    deserialize_number!(deserialize_u16 => visit_u16);
611
    deserialize_number!(deserialize_u32 => visit_u32);
612
    deserialize_number!(deserialize_u64 => visit_u64);
613
    deserialize_number!(deserialize_u128 => visit_u128);
614
    deserialize_number!(deserialize_f32 => visit_f32);
615
    deserialize_number!(deserialize_f64 => visit_f64);
616
617
    forward_to_deserialize_any! {
618
        bool char str string bytes byte_buf option unit unit_struct
619
        newtype_struct seq tuple tuple_struct map struct enum identifier
620
        ignored_any
621
    }
622
}
623
624
impl<'de> Deserializer<'de> for &Number {
625
    type Error = Error;
626
627
    deserialize_any!(ref);
628
629
    deserialize_number!(deserialize_i8 => visit_i8);
630
    deserialize_number!(deserialize_i16 => visit_i16);
631
    deserialize_number!(deserialize_i32 => visit_i32);
632
    deserialize_number!(deserialize_i64 => visit_i64);
633
    deserialize_number!(deserialize_i128 => visit_i128);
634
    deserialize_number!(deserialize_u8 => visit_u8);
635
    deserialize_number!(deserialize_u16 => visit_u16);
636
    deserialize_number!(deserialize_u32 => visit_u32);
637
    deserialize_number!(deserialize_u64 => visit_u64);
638
    deserialize_number!(deserialize_u128 => visit_u128);
639
    deserialize_number!(deserialize_f32 => visit_f32);
640
    deserialize_number!(deserialize_f64 => visit_f64);
641
642
    forward_to_deserialize_any! {
643
        bool char str string bytes byte_buf option unit unit_struct
644
        newtype_struct seq tuple tuple_struct map struct enum identifier
645
        ignored_any
646
    }
647
}
648
649
#[cfg(feature = "arbitrary_precision")]
650
pub(crate) struct NumberDeserializer {
651
    pub number: Option<String>,
652
}
653
654
#[cfg(feature = "arbitrary_precision")]
655
impl<'de> MapAccess<'de> for NumberDeserializer {
656
    type Error = Error;
657
658
    fn next_key_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>, Error>
659
    where
660
        K: de::DeserializeSeed<'de>,
661
    {
662
        if self.number.is_none() {
663
            return Ok(None);
664
        }
665
        seed.deserialize(NumberFieldDeserializer).map(Some)
666
    }
667
668
    fn next_value_seed<V>(&mut self, seed: V) -> Result<V::Value, Error>
669
    where
670
        V: de::DeserializeSeed<'de>,
671
    {
672
        seed.deserialize(self.number.take().unwrap().into_deserializer())
673
    }
674
}
675
676
#[cfg(feature = "arbitrary_precision")]
677
struct NumberFieldDeserializer;
678
679
#[cfg(feature = "arbitrary_precision")]
680
impl<'de> Deserializer<'de> for NumberFieldDeserializer {
681
    type Error = Error;
682
683
    fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Error>
684
    where
685
        V: de::Visitor<'de>,
686
    {
687
        visitor.visit_borrowed_str(TOKEN)
688
    }
689
690
    forward_to_deserialize_any! {
691
        bool u8 u16 u32 u64 u128 i8 i16 i32 i64 i128 f32 f64 char str string seq
692
        bytes byte_buf map struct option unit newtype_struct ignored_any
693
        unit_struct tuple_struct tuple enum identifier
694
    }
695
}
696
697
impl From<ParserNumber> for Number {
698
0
    fn from(value: ParserNumber) -> Self {
699
0
        let n = match value {
700
0
            ParserNumber::F64(f) => {
701
0
                #[cfg(not(feature = "arbitrary_precision"))]
702
0
                {
703
0
                    N::Float(f)
704
                }
705
                #[cfg(feature = "arbitrary_precision")]
706
                {
707
                    ryu::Buffer::new().format_finite(f).to_owned()
708
                }
709
            }
710
0
            ParserNumber::U64(u) => {
711
0
                #[cfg(not(feature = "arbitrary_precision"))]
712
0
                {
713
0
                    N::PosInt(u)
714
                }
715
                #[cfg(feature = "arbitrary_precision")]
716
                {
717
                    itoa::Buffer::new().format(u).to_owned()
718
                }
719
            }
720
0
            ParserNumber::I64(i) => {
721
0
                #[cfg(not(feature = "arbitrary_precision"))]
722
0
                {
723
0
                    N::NegInt(i)
724
                }
725
                #[cfg(feature = "arbitrary_precision")]
726
                {
727
                    itoa::Buffer::new().format(i).to_owned()
728
                }
729
            }
730
            #[cfg(feature = "arbitrary_precision")]
731
            ParserNumber::String(s) => s,
732
        };
733
0
        Number { n }
734
0
    }
735
}
736
737
macro_rules! impl_from_unsigned {
738
    (
739
        $($ty:ty),*
740
    ) => {
741
        $(
742
            impl From<$ty> for Number {
743
1.48M
                fn from(u: $ty) -> Self {
744
1.48M
                    let n = {
745
1.48M
                        #[cfg(not(feature = "arbitrary_precision"))]
746
1.48M
                        { N::PosInt(u as u64) }
747
1.48M
                        #[cfg(feature = "arbitrary_precision")]
748
1.48M
                        {
749
1.48M
                            itoa::Buffer::new().format(u).to_owned()
750
1.48M
                        }
751
1.48M
                    };
752
1.48M
                    Number { n }
753
1.48M
                }
Unexecuted instantiation: <serde_json::number::Number as core::convert::From<u8>>::from
Unexecuted instantiation: <serde_json::number::Number as core::convert::From<u16>>::from
Unexecuted instantiation: <serde_json::number::Number as core::convert::From<u32>>::from
<serde_json::number::Number as core::convert::From<u64>>::from
Line
Count
Source
743
1.48M
                fn from(u: $ty) -> Self {
744
1.48M
                    let n = {
745
1.48M
                        #[cfg(not(feature = "arbitrary_precision"))]
746
1.48M
                        { N::PosInt(u as u64) }
747
1.48M
                        #[cfg(feature = "arbitrary_precision")]
748
1.48M
                        {
749
1.48M
                            itoa::Buffer::new().format(u).to_owned()
750
1.48M
                        }
751
1.48M
                    };
752
1.48M
                    Number { n }
753
1.48M
                }
Unexecuted instantiation: <serde_json::number::Number as core::convert::From<usize>>::from
754
            }
755
        )*
756
    };
757
}
758
759
macro_rules! impl_from_signed {
760
    (
761
        $($ty:ty),*
762
    ) => {
763
        $(
764
            impl From<$ty> for Number {
765
57.3k
                fn from(i: $ty) -> Self {
766
57.3k
                    let n = {
767
                        #[cfg(not(feature = "arbitrary_precision"))]
768
                        {
769
57.3k
                            if i < 0 {
770
57.3k
                                N::NegInt(i as i64)
771
                            } else {
772
0
                                N::PosInt(i as u64)
773
                            }
774
                        }
775
                        #[cfg(feature = "arbitrary_precision")]
776
                        {
777
                            itoa::Buffer::new().format(i).to_owned()
778
                        }
779
                    };
780
57.3k
                    Number { n }
781
57.3k
                }
Unexecuted instantiation: <serde_json::number::Number as core::convert::From<i8>>::from
Unexecuted instantiation: <serde_json::number::Number as core::convert::From<i16>>::from
Unexecuted instantiation: <serde_json::number::Number as core::convert::From<i32>>::from
<serde_json::number::Number as core::convert::From<i64>>::from
Line
Count
Source
765
57.3k
                fn from(i: $ty) -> Self {
766
57.3k
                    let n = {
767
                        #[cfg(not(feature = "arbitrary_precision"))]
768
                        {
769
57.3k
                            if i < 0 {
770
57.3k
                                N::NegInt(i as i64)
771
                            } else {
772
0
                                N::PosInt(i as u64)
773
                            }
774
                        }
775
                        #[cfg(feature = "arbitrary_precision")]
776
                        {
777
                            itoa::Buffer::new().format(i).to_owned()
778
                        }
779
                    };
780
57.3k
                    Number { n }
781
57.3k
                }
Unexecuted instantiation: <serde_json::number::Number as core::convert::From<isize>>::from
782
            }
783
        )*
784
    };
785
}
786
787
impl_from_unsigned!(u8, u16, u32, u64, usize);
788
impl_from_signed!(i8, i16, i32, i64, isize);
789
790
#[cfg(feature = "arbitrary_precision")]
791
impl_from_unsigned!(u128);
792
#[cfg(feature = "arbitrary_precision")]
793
impl_from_signed!(i128);
794
795
impl Number {
796
    #[cfg(not(feature = "arbitrary_precision"))]
797
    #[cold]
798
0
    pub(crate) fn unexpected(&self) -> Unexpected {
799
0
        match self.n {
800
0
            N::PosInt(u) => Unexpected::Unsigned(u),
801
0
            N::NegInt(i) => Unexpected::Signed(i),
802
0
            N::Float(f) => Unexpected::Float(f),
803
        }
804
0
    }
805
806
    #[cfg(feature = "arbitrary_precision")]
807
    #[cold]
808
    pub(crate) fn unexpected(&self) -> Unexpected {
809
        Unexpected::Other("number")
810
    }
811
}