Struct Mutator 

pub struct Mutator<R: Rng> {
    pub rng: R,
    /* private fields */
}

Object which provides helper routines for mutating data structures and RNG management.

Fields

rng: R

Implementations

impl<R: Rng> Mutator<R>

pub fn new(rng: R) -> Mutator<R>

pub fn get_corpus_state(&self) -> CorpusFuzzingState

pub fn set_corpus_state(&mut self, state: CorpusFuzzingState)

pub fn gen<T>(&mut self) -> T

where T: NewFuzzed + 'static,

Generates a random choice of the given type

pub fn mutate<T>(&mut self, num: &mut T)

where T: BitXor<Output = T> + Add<Output = T> + Sub<Output = T> + NumCast + Bounded + Copy + WrappingAdd<Output = T> + WrappingSub<Output = T> + DangerousNumber<T> + Debug,

Mutates a number after randomly selecting a mutation strategy (see [MutatorOperation] for a list of strategies) If a min/max is specified then a new number in this range is chosen instead of performing a bit/arithmetic mutation

pub fn gen_range<T, B1>(&mut self, min: B1, max: B1) -> T

where T: SampleUniform + Display, B1: SampleBorrow<T> + Display + Add + Mul + NumCast + Sub + PartialEq + PartialOrd,

Generates a number in the range from [min, max) (note: non-inclusive). Panics if min >= max.

pub fn gen_weighted_range<T, B1>( &mut self, min: B1, max: B1, weighted: Weighted, ) -> T

where T: SampleUniform + Display + NumCast, B1: SampleBorrow<T> + Display + Debug + Add<Output = B1> + Mul<Output = B1> + NumCast + Sub<Output = B1> + PartialEq + PartialOrd + Copy + Div<Output = B1>,

Generates a number weighted to one end of the interval

pub fn should_early_bail_mutation(&self) -> bool

Helper function for quitting the recursive mutation early if the target field has already been mutated.

pub fn gen_chance(&mut self, chance_percentage: f64) -> bool

Returns a boolean value indicating whether or not the chance event occurred

pub fn random_flags(&mut self)

Client code should call this to signal to the mutator that a new fuzzer iteration is beginning and that the mutator should reset internal state.

pub fn rng_mut(&mut self) -> &mut R

Trait Implementations

impl<R: Debug + Rng> Debug for Mutator<R>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.