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use crate::{
FromValue, OwnedMut, OwnedRef, RawOwnedMut, RawOwnedRef, Shared, ToValue, UnsafeFromValue,
Value, VmError,
};
impl FromValue for String {
fn from_value(value: Value) -> Result<Self, VmError> {
match value {
Value::String(string) => Ok(string.borrow_ref()?.clone()),
Value::StaticString(string) => Ok((**string).clone()),
actual => Err(VmError::expected::<String>(actual.type_info()?)),
}
}
}
impl ToValue for Box<str> {
fn to_value(self) -> Result<Value, VmError> {
Ok(Value::from(Shared::new(self.to_string())))
}
}
impl FromValue for Box<str> {
fn from_value(value: Value) -> Result<Self, VmError> {
let string = value.into_string()?;
let string = string.borrow_ref()?.clone();
Ok(string.into_boxed_str())
}
}
impl UnsafeFromValue for &str {
type Output = *const str;
type Guard = Option<RawOwnedRef>;
unsafe fn unsafe_from_value(value: Value) -> Result<(Self::Output, Self::Guard), VmError> {
Ok(match value {
Value::String(string) => {
let string = string.owned_ref()?;
let (s, guard) = OwnedRef::into_raw(string);
((*s).as_str(), Some(guard))
}
Value::StaticString(string) => (string.as_ref().as_str(), None),
actual => return Err(VmError::expected::<String>(actual.type_info()?)),
})
}
unsafe fn to_arg(output: Self::Output) -> Self {
&*output
}
}
impl UnsafeFromValue for &mut str {
type Output = *mut str;
type Guard = Option<RawOwnedMut>;
unsafe fn unsafe_from_value(value: Value) -> Result<(Self::Output, Self::Guard), VmError> {
Ok(match value {
Value::String(string) => {
let string = string.owned_mut()?;
let (s, guard) = OwnedMut::into_raw(string);
((*s).as_mut_str(), Some(guard))
}
actual => {
return Err(VmError::expected::<String>(actual.type_info()?));
}
})
}
unsafe fn to_arg(output: Self::Output) -> Self {
&mut *output
}
}
impl UnsafeFromValue for &String {
type Output = *const String;
type Guard = Option<RawOwnedRef>;
unsafe fn unsafe_from_value(value: Value) -> Result<(Self::Output, Self::Guard), VmError> {
Ok(match value {
Value::String(string) => {
let string = string.owned_ref()?;
let (s, guard) = OwnedRef::into_raw(string);
(s, Some(guard))
}
Value::StaticString(string) => (&**string, None),
actual => {
return Err(VmError::expected::<String>(actual.type_info()?));
}
})
}
unsafe fn to_arg(output: Self::Output) -> Self {
&*output
}
}
impl UnsafeFromValue for &mut String {
type Output = *mut String;
type Guard = RawOwnedMut;
unsafe fn unsafe_from_value(value: Value) -> Result<(Self::Output, Self::Guard), VmError> {
Ok(match value {
Value::String(string) => {
let string = string.owned_mut()?;
let (s, guard) = OwnedMut::into_raw(string);
(s, guard)
}
actual => {
return Err(VmError::expected::<String>(actual.type_info()?));
}
})
}
unsafe fn to_arg(output: Self::Output) -> Self {
&mut *output
}
}