use crate::{
FromValue, OwnedMut, OwnedRef, RawOwnedMut, RawOwnedRef, Shared, UnsafeFromValue, Value,
VmError,
};
value_types!(crate::GENERATOR_STATE_TYPE, GeneratorState => GeneratorState, &GeneratorState, &mut GeneratorState);
#[derive(Debug)]
pub enum GeneratorState {
Yielded(Value),
Complete(Value),
}
impl GeneratorState {
pub fn is_yielded(&self) -> bool {
matches!(self, Self::Yielded(..))
}
pub fn is_complete(&self) -> bool {
matches!(self, Self::Complete(..))
}
}
impl FromValue for Shared<GeneratorState> {
fn from_value(value: Value) -> Result<Self, VmError> {
Ok(value.into_generator_state()?)
}
}
impl FromValue for GeneratorState {
fn from_value(value: Value) -> Result<Self, VmError> {
let state = value.into_generator_state()?;
Ok(state.take()?)
}
}
impl UnsafeFromValue for &GeneratorState {
type Output = *const GeneratorState;
type Guard = RawOwnedRef;
unsafe fn unsafe_from_value(value: Value) -> Result<(Self::Output, Self::Guard), VmError> {
let state = value.into_generator_state()?;
let (state, guard) = OwnedRef::into_raw(state.owned_ref()?);
Ok((state, guard))
}
unsafe fn to_arg(output: Self::Output) -> Self {
&*output
}
}
impl UnsafeFromValue for &mut GeneratorState {
type Output = *mut GeneratorState;
type Guard = RawOwnedMut;
unsafe fn unsafe_from_value(value: Value) -> Result<(Self::Output, Self::Guard), VmError> {
let state = value.into_generator_state()?;
Ok(OwnedMut::into_raw(state.owned_mut()?))
}
unsafe fn to_arg(output: Self::Output) -> Self {
&mut *output
}
}