41 lines
1.1 KiB
Rust
41 lines
1.1 KiB
Rust
use rand::distributions::Alphanumeric;
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use rand::prelude::{Rng, SeedableRng, StdRng};
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const OPERATORS: &[char] = &[
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'+', '-', '<', '>', '(', ')', '*', '/', '&', '|', '!', ',', '.',
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];
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pub struct Rand(StdRng);
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impl Rand {
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pub fn new(seed: usize) -> Self {
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Rand(StdRng::seed_from_u64(seed as u64))
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}
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pub fn unsigned(&mut self, max: usize) -> usize {
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self.0.gen_range(0, max + 1)
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}
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pub fn words(&mut self, max_count: usize) -> Vec<u8> {
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let mut result = Vec::new();
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let word_count = self.unsigned(max_count);
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for i in 0..word_count {
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if i > 0 {
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if self.unsigned(5) == 0 {
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result.push('\n' as u8);
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} else {
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result.push(' ' as u8);
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}
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}
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if self.unsigned(3) == 0 {
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let index = self.unsigned(OPERATORS.len() - 1);
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result.push(OPERATORS[index] as u8);
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} else {
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for _ in 0..self.unsigned(8) {
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result.push(self.0.sample(Alphanumeric) as u8);
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}
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}
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}
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result
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}
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}
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