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32 lines
792 B
Rust
32 lines
792 B
Rust
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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use super::dispatch_json::{JsonOp, Value};
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use crate::op_error::OpError;
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use crate::state::State;
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use deno_core::CoreIsolate;
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use deno_core::ZeroCopyBuf;
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use rand::thread_rng;
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use rand::Rng;
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pub fn init(i: &mut CoreIsolate, s: &State) {
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i.register_op(
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"op_get_random_values",
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s.stateful_json_op(op_get_random_values),
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);
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}
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fn op_get_random_values(
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state: &State,
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_args: Value,
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zero_copy: &mut [ZeroCopyBuf],
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) -> Result<JsonOp, OpError> {
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assert_eq!(zero_copy.len(), 1);
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if let Some(ref mut seeded_rng) = state.borrow_mut().seeded_rng {
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seeded_rng.fill(&mut *zero_copy[0]);
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} else {
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let mut rng = thread_rng();
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rng.fill(&mut *zero_copy[0]);
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}
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Ok(JsonOp::Sync(json!({})))
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}
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