alef 0.34.1

Opinionated polyglot binding generator for Rust libraries
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

#![allow(clippy::too_many_arguments, clippy::unused_async)]

use napi::bindgen_prelude::*;
use napi::threadsafe_function::ThreadsafeFunction;
use napi_derive::napi;
use std::sync::Arc;

/// Wrapper that lets an arbitrary JSON handler return participate in
/// `Either<Promise<_>, _>`. Both `Either` arms and `Promise<T>` require
/// `ValidateNapiValue`, which `serde_json::Value` does not implement. A handler
/// return is always the response-envelope object, so `value_type()` is `Object`;
/// the default `validate` then routes a plain object to the value arm and a
/// thenable to the promise arm — supporting both sync and async JS handlers.
pub struct HandlerReturn(serde_json::Value);

impl TypeName for HandlerReturn {
    fn type_name() -> &'static str {
        "HandlerReturn"
    }
    fn value_type() -> ValueType {
        ValueType::Object
    }
}

impl ValidateNapiValue for HandlerReturn {}

impl FromNapiValue for HandlerReturn {
    unsafe fn from_napi_value(env: napi::sys::napi_env, napi_val: napi::sys::napi_value) -> Result<Self> {
        Ok(Self(unsafe { serde_json::Value::from_napi_value(env, napi_val)? }))
    }
}