38 lines
993 B
Rust
38 lines
993 B
Rust
#[macro_use]
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extern crate napi_rs as napi;
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#[macro_use]
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extern crate napi_derive;
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use napi::{Any, CallContext, Env, Error, Number, Object, Result, Status, Value};
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use std::convert::TryInto;
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register_module!(test_module, init);
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fn init<'env>(
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env: &'env Env,
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exports: &'env mut Value<'env, Object>,
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) -> Result<Option<Value<'env, Object>>> {
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exports.set_named_property("testThrow", env.create_function("testThrow", test_throw)?)?;
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exports.set_named_property("fibonacci", env.create_function("fibonacci", fibonacci)?)?;
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Ok(None)
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}
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#[js_function]
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fn test_throw<'a>(_ctx: CallContext) -> Result<Value<'a, Any>> {
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Err(Error::new(Status::GenericFailure))
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}
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#[js_function]
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fn fibonacci<'env>(ctx: CallContext<'env>) -> Result<Value<'env, Number>> {
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let n = ctx.get::<Number>(0)?.try_into()?;
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ctx.env.create_int64(fibonacci_native(n))
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}
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#[inline]
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fn fibonacci_native(n: i64) -> i64 {
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match n {
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1 | 2 => 1,
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_ => fibonacci_native(n - 1) + fibonacci_native(n - 2),
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}
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}
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