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denoland-deno/cli/ops/random.rs
2020-01-24 15:10:49 -05:00

32 lines
825 B
Rust

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
use super::dispatch_json::{JsonOp, Value};
use crate::ops::json_op;
use crate::state::ThreadSafeState;
use deno_core::*;
use rand::thread_rng;
use rand::Rng;
pub fn init(i: &mut Isolate, s: &ThreadSafeState) {
i.register_op(
"get_random_values",
s.core_op(json_op(s.stateful_op(op_get_random_values))),
);
}
fn op_get_random_values(
state: &ThreadSafeState,
_args: Value,
zero_copy: Option<ZeroCopyBuf>,
) -> Result<JsonOp, ErrBox> {
assert!(zero_copy.is_some());
if let Some(ref seeded_rng) = state.seeded_rng {
let mut rng = seeded_rng.lock().unwrap();
rng.fill(&mut zero_copy.unwrap()[..]);
} else {
let mut rng = thread_rng();
rng.fill(&mut zero_copy.unwrap()[..]);
}
Ok(JsonOp::Sync(json!({})))
}