bolero-generator 0.13.5

value generator for testing and fuzzing
Documentation 
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macro_rules! gen_int {
    ($name:ident, $ty:ident) => {
        #[inline(always)]
        fn $name(&mut self, min: Bound<&$ty>, max: Bound<&$ty>) -> Option<$ty> {
            Uniform::sample(self, min, max)
        }
    };
}

macro_rules! gen_float {
    ($name:ident, $ty:ident) => {
        #[inline]
        fn $name(&mut self, min: Bound<&$ty>, max: Bound<&$ty>) -> Option<$ty> {
            Uniform::sample(self, min, max)
        }
    };
}

macro_rules! gen_from_bytes {
    () => {
        gen_int!(gen_u8, u8);

        gen_int!(gen_i8, i8);

        gen_int!(gen_u16, u16);

        gen_int!(gen_i16, i16);

        gen_int!(gen_u32, u32);

        gen_int!(gen_i32, i32);

        gen_int!(gen_u64, u64);

        gen_int!(gen_i64, i64);

        gen_int!(gen_u128, u128);

        gen_int!(gen_i128, i128);

        gen_int!(gen_usize, usize);

        gen_int!(gen_isize, isize);

        gen_float!(gen_f32, f32);

        gen_float!(gen_f64, f64);

        #[inline(always)]
        fn gen_char(&mut self, min: Bound<&char>, max: Bound<&char>) -> Option<char> {
            char::sample(self, min, max)
        }

        #[inline(always)]
        fn gen_bool(&mut self, probability: Option<f32>) -> Option<bool> {
            if let Some(probability) = probability {
                let value = self.sample_u32()? as f32 / u32::MAX as f32;
                Some(value < probability)
            } else {
                self.sample_bool()
            }
        }

        #[inline(always)]
        fn gen_variant(&mut self, variants: usize, base_case: usize) -> Option<usize> {
            if self.depth() == self.max_depth() {
                return Some(base_case);
            }

            Uniform::sample(self, Bound::Unbounded, Bound::Excluded(&variants))
        }
    };
}