fuzzcheck_mutators/
lib.rs

1#![feature(generic_associated_types)]
2#![feature(variant_count)]
3#![feature(cmp_min_max_by)]
4#![feature(never_type)]
5#![feature(int_bits_const)]
6#![feature(arc_new_cyclic)]
7
8pub extern crate fastrand;
9pub extern crate fuzzcheck_mutators_derive;
10pub extern crate fuzzcheck_traits;
11pub use fuzzcheck_mutators_derive::*;
12
13mod bool;
14mod r#box;
15mod dictionary;
16mod enums;
17mod integer;
18mod option;
19mod tuples;
20mod unit;
21mod vector;
22
23pub use crate::bool::BoolMutator;
24pub use crate::dictionary::DictionaryMutator;
25pub use crate::integer::*;
26pub use crate::option::OptionMutator;
27pub use crate::r#box::BoxMutator;
28
29pub use crate::tuples::{RefTypes, TupleMutator, TupleMutatorWrapper, TupleStructure};
30
31pub use crate::enums::{BasicEnumMutator, BasicEnumStructure};
32pub use crate::enums::{Either10, Either11, Either2, Either3, Either4, Either5, Either6, Either7, Either8, Either9};
33pub use crate::enums::{
34    Enum10PayloadMutator, Enum1PayloadMutator, Enum2PayloadMutator, Enum3PayloadMutator, Enum4PayloadMutator,
35    Enum5PayloadMutator, Enum6PayloadMutator, Enum7PayloadMutator, Enum8PayloadMutator, Enum9PayloadMutator,
36};
37pub use crate::enums::{
38    Enum10PayloadStructure, Enum1PayloadStructure, Enum2PayloadStructure, Enum3PayloadStructure, Enum4PayloadStructure,
39    Enum5PayloadStructure, Enum6PayloadStructure, Enum7PayloadStructure, Enum8PayloadStructure, Enum9PayloadStructure,
40};
41pub use crate::tuples::{Tuple1, Tuple10, Tuple2, Tuple3, Tuple4, Tuple5, Tuple6, Tuple7, Tuple8, Tuple9, Wrapped};
42pub use crate::tuples::{
43    Tuple10Mutator, Tuple1Mutator, Tuple2Mutator, Tuple3Mutator, Tuple4Mutator, Tuple5Mutator, Tuple6Mutator,
44    Tuple7Mutator, Tuple8Mutator, Tuple9Mutator,
45};
46
47pub use crate::unit::*;
48pub use crate::vector::VecMutator;
49
50use fuzzcheck_traits::Mutator;
51use std::ops::Range;
52
53pub trait DefaultMutator: Clone {
54    type Mutator: Mutator<Self>;
55    fn default_mutator() -> Self::Mutator;
56}
57
58/// Generate a random f64 within the given range
59/// The start and end of the range must be finite
60/// This is a very naive implementation
61#[inline(always)]
62fn gen_f64(rng: &fastrand::Rng, range: Range<f64>) -> f64 {
63    range.start + rng.f64() * (range.end - range.start)
64}
65
66#[must_use]
67fn cplxity_to_size(cplx: f64) -> usize {
68    let size_f: f64 = 2.0_f64.powf(cplx).round();
69    if std::usize::MAX as f64 > size_f {
70        size_f as usize
71    } else {
72        std::usize::MAX
73    }
74}
75#[must_use]
76fn size_to_cplxity(size: usize) -> f64 {
77    (usize::BITS - (size.saturating_sub(1)).leading_zeros()) as f64
78}
79
80#[cfg(test)]
81mod test {
82    use crate::size_to_cplxity;
83
84    #[test]
85    fn test_size_to_cplxity() {
86        assert_eq!(0.0, size_to_cplxity(0));
87        assert_eq!(0.0, size_to_cplxity(1));
88        assert_eq!(1.0, size_to_cplxity(2));
89        assert_eq!(2.0, size_to_cplxity(3));
90        assert_eq!(2.0, size_to_cplxity(4));
91        assert_eq!(3.0, size_to_cplxity(5));
92        assert_eq!(3.0, size_to_cplxity(8));
93        assert_eq!(5.0, size_to_cplxity(31));
94    }
95}
fuzzcheck_mutators/lib.rs

fuzzcheck_mutators/
lib.rs
