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use libc::size_t;
use crate::sys::napi_value;
use crate::val::JsEnv;
use crate::NjError;
use crate::napi_call_result;
pub trait TryIntoJs {
fn try_to_js(self,js_env: &JsEnv) -> Result<napi_value,NjError> ;
}
impl TryIntoJs for bool {
fn try_to_js(self, js_env: &JsEnv) -> Result<napi_value,NjError> {
if self {
js_env.create_int32(1)
} else {
js_env.create_int32(0)
}
}
}
impl TryIntoJs for f64 {
fn try_to_js(self, js_env: &JsEnv) -> Result<napi_value,NjError> {
js_env.create_double(self)
}
}
impl TryIntoJs for i64 {
fn try_to_js(self, js_env: &JsEnv) -> Result<napi_value,NjError> {
js_env.create_int64(self)
}
}
impl TryIntoJs for i32 {
fn try_to_js(self, js_env: &JsEnv) -> Result<napi_value,NjError> {
js_env.create_int32(self)
}
}
impl TryIntoJs for String {
fn try_to_js(self, js_env: &JsEnv) -> Result<napi_value,NjError> {
js_env.create_string_utf8(&self)
}
}
impl TryIntoJs for () {
fn try_to_js(self, _js_env: &JsEnv) -> Result<napi_value,NjError> {
Ok(std::ptr::null_mut())
}
}
impl <T,E>TryIntoJs for Result<T,E> where T: TryIntoJs, E: ToString {
fn try_to_js(self, js_env: &JsEnv) -> Result<napi_value,NjError> {
match self {
Ok(val) => val.try_to_js(&js_env),
Err(err) => Err(NjError::Other(err.to_string()))
}
}
}
impl TryIntoJs for napi_value {
fn try_to_js(self,_js_env: &JsEnv) -> Result<napi_value,NjError> {
Ok(self)
}
}
pub trait IntoJs {
fn to_js(self,js_env: &JsEnv) -> napi_value;
}
pub trait JSValue: Sized {
fn convert_to_rust(env: &JsEnv,js_value: napi_value) -> Result<Self,NjError>;
}
impl JSValue for f64 {
fn convert_to_rust(env: &JsEnv,js_value: napi_value) -> Result<Self,NjError> {
env.assert_type(js_value, crate::sys::napi_valuetype_napi_number)?;
let mut value: f64 = 0.0;
napi_call_result!(
crate::sys::napi_get_value_double(env.inner(),js_value, &mut value)
)?;
Ok(value)
}
}
impl JSValue for i32 {
fn convert_to_rust(env: &JsEnv,js_value: napi_value) -> Result<Self,NjError> {
env.assert_type(js_value, crate::sys::napi_valuetype_napi_number)?;
let mut value: i32 = 0;
napi_call_result!(
crate::sys::napi_get_value_int32(env.inner(),js_value, &mut value)
)?;
Ok(value)
}
}
impl JSValue for i64 {
fn convert_to_rust(env: &JsEnv,js_value: napi_value) -> Result<Self,NjError> {
env.assert_type(js_value, crate::sys::napi_valuetype_napi_number)?;
let mut value: i64 = 0;
napi_call_result!(
crate::sys::napi_get_value_int64(env.inner(),js_value, &mut value)
)?;
Ok(value)
}
}
impl JSValue for bool {
fn convert_to_rust(env: &JsEnv,js_value: napi_value) -> Result<Self,NjError> {
env.assert_type(js_value, crate::sys::napi_valuetype_napi_boolean)?;
let mut value: bool = false;
napi_call_result!(
crate::sys::napi_get_value_bool(env.inner(),js_value, &mut value)
)?;
Ok(value)
}
}
impl JSValue for String {
fn convert_to_rust(env: &JsEnv,js_value: napi_value) -> Result<Self,NjError> {
env.assert_type(js_value, crate::sys::napi_valuetype_napi_string)?;
use crate::sys::napi_get_value_string_utf8;
let mut chars: [u8; 1024] = [0;1024];
let mut size: size_t = 0;
napi_call_result!(
napi_get_value_string_utf8(env.inner(),js_value,chars.as_mut_ptr() as *mut i8,1024,&mut size)
)?;
let my_chars: Vec<u8> = chars[0..size].into();
String::from_utf8(my_chars).map_err(|err| err.into())
}
}