edon 0.0.27

Library embedding Nodejs (libnode) within Rust
Documentation 
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use std::convert::TryInto;

use super::*;
use crate::napi::bindgen_runtime::FromNapiValue;
use crate::napi::Env;

pub struct JsGlobal(pub(crate) Value);

pub struct JsTimeout(pub(crate) Value);

pub struct JSON(pub(crate) Value);

impl FromNapiValue for JSON {
  unsafe fn from_napi_value(
    env: libnode_sys::napi_env,
    napi_val: libnode_sys::napi_value,
  ) -> Result<Self> {
    Ok(JSON(Value {
      env,
      value: napi_val,
      value_type: ValueType::Object,
    }))
  }
}

impl JSON {
  pub fn stringify<V: NapiRaw>(
    &self,
    value: V,
  ) -> Result<std::string::String> {
    let func: JsFunction = self.get_named_property_unchecked("stringify")?;
    let result = func
      .call(None, &[value])
      .map(|ret| unsafe { ret.cast::<JsString>() })?;
    result.into_utf8()?.as_str().map(|s| s.to_owned())
  }
}

impl JsGlobal {
  pub fn set_interval(
    &self,
    handler: JsFunction,
    interval: f64,
  ) -> Result<JsTimeout> {
    let func: JsFunction = self.get_named_property_unchecked("setInterval")?;
    func
      .call(
        None,
        &[
          handler.into_unknown(),
          unsafe { Env::from_raw(self.0.env) }
            .create_double(interval)?
            .into_unknown(),
        ],
      )
      .and_then(|ret| ret.try_into())
  }

  pub fn clear_interval(
    &self,
    timer: JsTimeout,
  ) -> Result<JsUndefined> {
    let func: JsFunction = self.get_named_property_unchecked("clearInterval")?;
    func
      .call(None, &[timer.into_unknown()])
      .and_then(|ret| ret.try_into())
  }

  pub fn set_timeout(
    &self,
    handler: JsFunction,
    interval: f64,
  ) -> Result<JsTimeout> {
    let func: JsFunction = self.get_named_property_unchecked("setTimeout")?;
    func
      .call(
        None,
        &[
          handler.into_unknown(),
          unsafe { Env::from_raw(self.0.env) }
            .create_double(interval)?
            .into_unknown(),
        ],
      )
      .and_then(|ret| ret.try_into())
  }

  pub fn clear_timeout(
    &self,
    timer: JsTimeout,
  ) -> Result<JsUndefined> {
    let func: JsFunction = self.get_named_property_unchecked("clearTimeout")?;
    func
      .call(None, &[timer.into_unknown()])
      .and_then(|ret| ret.try_into())
  }
}